Create new fishing gear to reduce bycatch.Our CNC Machining services can for you do well. We are China machining parts, metal stamping parts, turning parts, cnc parts, Springs,coldforming parts, machining parts, screw machine parts, casting parts, forging parts supplier, We can produce machined parts according to your requirements. high quality, low price, low cost OEM fishing gear parts
machining parts: Hydraulic, valve, flange, automobile, shaft, bearing housing Bar, plate,welded part, marine part, winch part, sheet metal Equipment: Common lathe,CNC Machine,Milling,Turning,Stamping Machine,Spring Machine
Metal Process: CNC turning, milling, drilling, planning, grinding, welding. Surface Treat: Zn (Cr3 RoHS free or Cr6 ) plated, Cr /Ni plated, hot-dip galvanizing, paint,anodize, powder coating, brush, Polish Technical: Dedicated mechanical designer, experienced worker 3D design service inclusive of modeling, analysis and detailed drawing at normal cost
Quality: ISO 9001: 2008 Control strictly and follow specification Move fast to meet your urgent need caused by accident. Packing: Wooden case, hardboard, steel pallet, according to custom’s requirements
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Rod
The inserted pole is a separate fishing rod in the hand pole. It is called the “follow up” fishing rod according to the Chinese pronunciation of Japanese characters. When the rod is used, it needs to be lifted from top to bottom to get a complete fishing rod. The pole cutter reduces the space of the telescopic (jointing) fishing rod because of the split body, so the rod body can be made to be fine and not to reduce the strength. It is the variety of the competitive fishing enthusiast. It is more suitable for fishing with 0.5 kilograms of crucian carp. Hard and flexible tunability, not only for the fishing people to add the pleasure and pleasure of the fish, but also not easy to cut line, in the game can be used for fishing less than 50 grams of small crucian carp; because of light self weight, can save energy, easy to keep good competition in a long time game. At present, the pin rods for sale in the market are mainly 3.6 meters long. Most of the tonal bars are hard and super hard.
Our workshop is machining services for CNC Machining parts, metal stamping parts, turning parts, cnc parts, Springs,coldforming parts, machining parts, screw machine parts, casting parts, forging parts supplier, Wecan produce machined parts according to your requirements.
machining parts: Hydraulic, valve, flange, automobile, shaft, bearing housing Bar, plate,welded part, marine part, winch part, sheet metal Equipment: Common lathe,CNC Machine,Milling,Turning,Stamping Machine,Spring Machine
Metal Process: CNC turning, milling, drilling, planning, grinding, welding. Surface Treat: Zn (Cr3 RoHS free or Cr6 ) plated, Cr /Ni plated, hot-dip galvanizing, paint,anodize, powder coating, brush, Polish Technical: Dedicated mechanical designer, experienced worker 3D design service inclusive of modeling, analysis and detailed drawing at normal cost
Quality: ISO 9001: 2008 Control strictly and follow specification Move fast to meet your urgent need caused by accident. Packing: Wooden case, hardboard, steel pallet, according to custom’s requirements
If you want to know more about cnc machining parts in China, Please contact us.
The tool length compensation instruction is generally used to compensate for the axial (Z direction perpendicular to the worktable) of the tool, which makes the actual displacement of the tool in the Z direction more or less than the given value of the program, so that when the size of the tool changes in the length direction (after the drill blade is worn), it can not change the case of the program. Next, by changing the offset or Z, we want to re – process the required parts size. The processing of a part requires a lot of cutting tools and the shapes of these tools are in different length radius positions.. using the length of the tool to compensate for the G43, G44, and G49 instructions can solve the H problem Instruction format: G43 Z__ H__ G44 Z__ H__ G49 Instruction function: compensation for the length of the tool Instructions: (1) the G43 instruction is the tool length positive compensation; the current tool is more than the reference tool to go to the terminal coordinate value of the Z axis moving instruction specified in the program. Therefore, the actual displacement of the current tool moving Z00DE must be short so the tool length is the same as the principle of compensation. (2) the G44 instruction is negative compensation for the length of the tool. (3) the G49 directive is to cancel the tool length compensation; the safety directive [G49 G40 must be cancelled for safety and machine life. (4) tool length compensation refers to the actual displacement of the tool in the Z direction, which is increased or reduced by a specified value compared with the given value of the program [numerical value in the register]; (5) the Z value in the format refers to the instruction value in the program, that is, the coordinates of the target points. (6) H is the tool length compensation code, and the two digit number is the address of the tool length compensation register. H01 refers to register No. 01, which stores the compensation value of corresponding tool length in this register. When the tool length is compensated, the Z distance must be larger than the offset value in the register. When using G43, G44, regardless of the absolute size or incremental size instruction, the terminal coordinates of the Z axis moving instruction specified in the program all perform G43 with the offset in the memory of the H code instruction: the Z actual value =Z instruction value + the offset value in H__ When executing G44: Z actual value =Z instruction value – the bias value in H.
Our workshop is machining services for CNC Machining parts, metal stamping parts, turning parts, cnc parts, Springs,coldforming parts, machining parts, screw machine parts, casting parts, forging parts supplier, Wecan produce machined parts according to your requirements.
machining parts: Hydraulic, valve, flange, automobile, shaft, bearing housing Bar, plate,welded part, marine part, winch part, sheet metal Equipment: Common lathe,CNC Machine,Milling,Turning,Stamping Machine,Spring Machine
Metal Process: CNC turning, milling, drilling, planning, grinding, welding. Surface Treat: Zn (Cr3 RoHS free or Cr6 ) plated, Cr /Ni plated, hot-dip galvanizing, paint,anodize, powder coating, brush, Polish Technical: Dedicated mechanical designer, experienced worker 3D design service inclusive of modeling, analysis and detailed drawing at normal cost
Quality: ISO 9001: 2008 Control strictly and follow specification Move fast to meet your urgent need caused by accident. Packing: Wooden case, hardboard, steel pallet, according to custom’s requirements
If you want to know more about cnc machining parts in China, Please contact us.
Lathe fixture is a device used for clamping workpiece on lathe. It is called the hand of lathe. The use of the lathe fixture can ensure the machining accuracy of the workpiece, reduce the auxiliary working hours, greatly improve the production efficiency, and expand the scope of the use of the lathe to realize the multi energy of the machine. It is used not only for metal cutting but also for inspection, assembly, welding parts and manufacturing process. The lathe fixture is only a supporting industry, not a pillar industry, but in the process of mechanical processing, a variety of jig must be used in the process of machining. The fixture is a necessary process and equipment, and the market has great potential. With the pressure of labor cost, how to improve the effective working time of the lathe and to save the processing cost by optimizing the fixture have become an urgent concern for the small and medium enterprises. Just like the barrel principle, the scale, the level of technology and application of the fixture industry will affect the overall level of the mechanical manufacturing system. The high efficiency and high precision fixture also becomes the competition chip of the end users, because the fixture itself requires a higher level of the comprehensive professional technical knowledge of the human being. It needs to know the lathe, processing technology and the features of the parts. At the same time, it needs a lot of practical experience, and the people with such ability are less. China has a strong demand for lathes. Jig brands all over the world focus on the Chinese market. So, at present, in the Chinese market, what are the famous domestic and foreign famous jig brands? Usually, we divide the fixture into 6 types: General fixture, special fixture, modular fixture, assembling fixture, general adjustable fixture and group fixture. But if we divide the products according to the product, the hydraulic knife handle, chuck, sucker and zero point fast changing system are innumerable; according to the application process, it includes machining centers, lathes, self. The application process of moving up and down material and so on. How to sort out the fixture brand in Chinese market? At present, there are three main problems in the lathe fixture industry in our country, one is that the overall scale of the industry is weak, the layout is scattered, and the industrial entity is not formed; the two is that the jig industry is mostly small and medium enterprises, the diversity of the fixture single piece can only take the small batch production mode, the economic benefit is very limited, and the overall strength of the industry is better. The three is that the social recognition of the lathe fixture is low, the standardization and specialization of the industry is low, which restricts the development of the fixture products in the direction of specialization and market, and the formulation of the fixture standard needs to be strengthened. The future development direction of the lathe fixture is shown in the following four aspects: one is standardization, the standardization of the fixture is beneficial to its general development, is conducive to the realization of commercialized production, is conducive to reducing production costs and shortening the production preparation period; two is precision, the precision of mechanical products is higher and higher, and the precision of the lathe fixture. The requirement is also higher and higher; three is high efficiency. The high efficiency fixture can reduce the working time of the workpiece, improve the labor productivity and reduce the labor intensity of the workers. Four is flexible, the flexibility of the lathe fixture is similar to the flexibility of the lathe. The adaptability of the variable factors can be improved by the adjustment and combination, and the better the adaptability of the variable factors. It meets the needs of modern machinery industry in multi variety and medium and small batch production.
Our workshop is machining services for CNC Machining parts, metal stamping parts, turning parts, cnc parts, Springs,coldforming parts, machining parts, screw machine parts, casting parts, forging parts supplier, Wecan produce machined parts according to your requirements.
machining parts: Hydraulic, valve, flange, automobile, shaft, bearing housing Bar, plate,welded part, marine part, winch part, sheet metal Equipment: Common lathe,CNC Machine,Milling,Turning,Stamping Machine,Spring Machine
Metal Process: CNC turning, milling, drilling, planning, grinding, welding. Surface Treat: Zn (Cr3 RoHS free or Cr6 ) plated, Cr /Ni plated, hot-dip galvanizing, paint,anodize, powder coating, brush, Polish Technical: Dedicated mechanical designer, experienced worker 3D design service inclusive of modeling, analysis and detailed drawing at normal cost
Quality: ISO 9001: 2008 Control strictly and follow specification Move fast to meet your urgent need caused by accident. Packing: Wooden case, hardboard, steel pallet, according to custom’s requirements
If you want to know more about cnc machining parts in China, Please contact us.
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1) disc milling cutter. Generally, it is made up of blade or cutter head on disc cutter body. It is commonly used for milling the larger plane.
2) end milling cutter; end milling cutter is the most commonly used milling cutter in NC milling. It is widely used for machining planar parts, and Figure 4-3 is the two most common end mill. In addition to milling with end edge, end milling is often used for milling side edges. Sometimes end and side edges are simultaneously milling. End mills can also be called cylindrical milling cutters.
End milling cutter
3) forming milling cutter
Forming milling cutter is usually designed for specific workpiece or processing content. It is applicable to specific shapes (such as angle surface, groove surface, etc.) for machining plane parts, and also to special holes or platforms. Figure 4-4 shows several commonly used molding milling cutters.
Forming milling cutter
4) ball end milling cutter. It is suitable for machining space curved parts, and sometimes used for the machining of larger transfer arc of plane parts. Figure 4-5 is a common ball end milling cutter.
Ball type milling cutter 5) drum type milling cutter. Fig. 4-6 is a typical drum milling cutter, which is mainly used for approximate machining of variable bevel surfaces of variable angle parts.
In addition to the above types of milling cutters, CNC milling machines can also use a variety of universal milling cutter. However, because there are special broach devices in the spindle of many CNC milling machines, or because of the difference in the taper of the spindle bore, the transition sleeve and pull rod must be made.
Our workshop is machining services for CNC Machining parts, metal stamping parts, turning parts, cnc parts, Springs,coldforming parts, machining parts, screw machine parts, casting parts, forging parts supplier, Wecan produce machined parts according to your requirements.
machining parts: Hydraulic, valve, flange, automobile, shaft, bearing housing Bar, plate,welded part, marine part, winch part, sheet metal Equipment: Common lathe,CNC Machine,Milling,Turning,Stamping Machine,Spring Machine
Metal Process: CNC turning, milling, drilling, planning, grinding, welding. Surface Treat: Zn (Cr3 RoHS free or Cr6 ) plated, Cr /Ni plated, hot-dip galvanizing, paint,anodize, powder coating, brush, Polish Technical: Dedicated mechanical designer, experienced worker 3D design service inclusive of modeling, analysis and detailed drawing at normal cost
Quality: ISO 9001: 2008 Control strictly and follow specification Move fast to meet your urgent need caused by accident. Packing: Wooden case, hardboard, steel pallet, according to custom’s requirements
If you want to know more about cnc machining parts in China, Please contact us.
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Three axis motion PLC production technical data
Compatible with G-code/ M-code, 3 axis linear / circular / helical interpolation motion control It supports electronic cam function (2048 points), flying shear and chasing shear. It is a motion control host and an extension module. 16 point I/O host, maximum extension from I/O to 512 Program capacity: 64K steps / data register: 10K words Built in RS-232 and RS-485 communication port, compatible with standard MODBUS ASCII/RTU communication protocol. Motion control function Built in A/B differential signal output: 2 sets (DVP20PM00D) / 3 group (DVP20PM00M), maximum differential output frequency 500kHz Support hand wheel direct input Single axis motion control function (1 speed, 2 speed, hand wheel input) Electronic gear function
Our workshop is machining services for CNC Machining parts, metal stamping parts, turning parts, cnc parts, Springs,coldforming parts, machining parts, screw machine parts, casting parts, forging parts supplier, Wecan produce machined parts according to your requirements.
machining parts: Hydraulic, valve, flange, automobile, shaft, bearing housing Bar, plate,welded part, marine part, winch part, sheet metal Equipment: Common lathe,CNC Machine,Milling,Turning,Stamping Machine,Spring Machine
Metal Process: CNC turning, milling, drilling, planning, grinding, welding. Surface Treat: Zn (Cr3 RoHS free or Cr6 ) plated, Cr /Ni plated, hot-dip galvanizing, paint,anodize, powder coating, brush, Polish Technical: Dedicated mechanical designer, experienced worker 3D design service inclusive of modeling, analysis and detailed drawing at normal cost
Quality: ISO 9001: 2008 Control strictly and follow specification Move fast to meet your urgent need caused by accident. Packing: Wooden case, hardboard, steel pallet, according to custom’s requirements
If you want to know more about cnc machining parts in China, Please contact us.
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Automatic monitoring of tool wear is a necessary and important part of improving the automation of small lathe and realizing unmanned automation. In the process of cutting, the tool will produce wear because of the effect of mechanical friction and heat effect. The less wear makes the geometric shape of the tool change, and the cutting edge of the tool will burn out and even fall. When worn to a certain extent, it must be regrinding, otherwise it will affect the dimensional accuracy and surface roughness of the workpiece, reduce the quality of the product, or even scrap it. For cutting tools, if the cutting tool is too frequent, the productivity of the lathe is reduced, the consumption of the tool material is aggravated, the labor productivity is reduced, and the cost of production is increased. For this reason, the lathe operator must constantly monitor the wear of the tool during the cutting process, and change the knife and knife in time to overcome the above drawbacks. It is very demanding for a worker to take care of many automatic lathe operators. At present, the wear of artificial monitoring tools has been far from adapting to the increasing requirements of automation lathes and automation. The automatic monitoring of tool wear is an essential part of improving the automation and realizing the unmanned lathe. A large number of experimental studies have been carried out abroad, and the automatic monitoring and control technology of tool wear has been applied to actual production in Japan, Germany, the United States, the United Kingdom, Holland and other countries. It is reported that there are dozens of methods to detect tool wear directly and indirectly in machining. At present, a new type of power monitoring and protection device is widely used. The power monitoring device is based on the principle of motor power detection. When the lathe is cutting, with the wear of the tool, the load and current of the lathe spindle motor and the phase angle between the voltage and the current will change, which leads to the power change. When the power is changed to a certain value (that is, the degree of the tool wear to the regrinding), the automatic monitoring and control device sends out the alarm signal. The tool holder automatically withdraws and the lathe automatically stops running. The operating workers can change the knife, the knife and the troubleshooting in time.
Our workshop is machining services for CNC Machining parts, metal stamping parts, turning parts, cnc parts, Springs,coldforming parts, machining parts, screw machine parts, casting parts, forging parts supplier, Wecan produce machined parts according to your requirements.
machining parts: Hydraulic, valve, flange, automobile, shaft, bearing housing Bar, plate,welded part, marine part, winch part, sheet metal Equipment: Common lathe,CNC Machine,Milling,Turning,Stamping Machine,Spring Machine
Metal Process: CNC turning, milling, drilling, planning, grinding, welding. Surface Treat: Zn (Cr3 RoHS free or Cr6 ) plated, Cr /Ni plated, hot-dip galvanizing, paint,anodize, powder coating, brush, Polish Technical: Dedicated mechanical designer, experienced worker 3D design service inclusive of modeling, analysis and detailed drawing at normal cost
Quality: ISO 9001: 2008 Control strictly and follow specification Move fast to meet your urgent need caused by accident. Packing: Wooden case, hardboard, steel pallet, according to custom’s requirements
If you want to know more about cnc machining parts in China, Please contact us.
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The application of numerical control and CNC machine tools successfully solved the automation of some medium and small batch parts with complex shape and high consistency. This not only greatly improved the production efficiency and machining accuracy, but also reduced the labor intensity of the workers, and shortened the production preparation period. However, in the use of CNC lathes, CNC lathes will inevitably have various failures, so the maintenance of the fault has become the most critical problem for the users of CNC lathes. On the one hand, the after-sales service of sales companies can not be guaranteed in time. On the other hand, some maintenance techniques can quickly judge the fault location, shorten the maintenance time and make the equipment run as fast as possible. In daily failures, we often encounter such failures as tool carrier, spindle, thread processing, system display, drive and communication. And the fault of the tool holder occupies a large proportion. Here, the classification introduces various kinds of fault of the electric tool holder and the corresponding solution in the daily work, and hope to provide some useful reference for you. The numerical control system used is GSK series lathe numerical control system produced by Guangzhou CNC Equipment Co., Ltd.
Fault phenomenon 1: the electric tool holder lock is not tight Fault cause processing method The position of the letter plate is not correct: disassemble the top of the tool holder, whirl and adjust the position of the letter plate, so that the Holzer element of the tool holder is aligned with the magnetic steel to stop the position of the knife in the exact position. 2. The system lock time is not long enough: adjust the system’s lock time parameter (the new turret lock time t = 1.2s). Failure of mechanical locking mechanism: dismantle the tool carrier, adjust the machinery, and check whether the locating pin is broken.
Fault phenomenon two: electric knife holder, a certain knife number can not stop, the rest of the cutter can rotate. Fault cause processing method The Holzer element damage of this knife: confirm which tool position makes the tool holder turn, input the instruction to turn the knife position on the system, and use the multimeter to measure whether there is a voltage change on the +24V contact points by the multimeter. If no change is made, it can be judged to be the damage of the Holzer element of the knife, and the replacement of the plate or the Holzer element. 2. The signal line of the cutter position is broken, causing the system to be unable to detect the in place signal: check whether the cutter position signal is connected with the system, whether there is a circuit breaker, and connect correctly. 3. There are problems in the system of signal receiving circuit of the knife position: when it is sure that the Holzer element is no problem, and the connection between the knife position signal and the system is no problem, the main board is replaced.
Our workshop is machining services for CNC Machining parts, metal stamping parts, turning parts, cnc parts, Springs,coldforming parts, machining parts, screw machine parts, casting parts, forging parts supplier, Wecan produce machined parts according to your requirements.
machining parts: Hydraulic, valve, flange, automobile, shaft, bearing housing Bar, plate,welded part, marine part, winch part, sheet metal Equipment: Common lathe,CNC Machine,Milling,Turning,Stamping Machine,Spring Machine
Metal Process: CNC turning, milling, drilling, planning, grinding, welding. Surface Treat: Zn (Cr3 RoHS free or Cr6 ) plated, Cr /Ni plated, hot-dip galvanizing, paint,anodize, powder coating, brush, Polish Technical: Dedicated mechanical designer, experienced worker 3D design service inclusive of modeling, analysis and detailed drawing at normal cost
Quality: ISO 9001: 2008 Control strictly and follow specification Move fast to meet your urgent need caused by accident. Packing: Wooden case, hardboard, steel pallet, according to custom’s requirements
If you want to know more about cnc machining parts in China, Please contact us.
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1 the transformation of the new machine and the lathe for overhaul of the old machine must undergo the same transformation as follows. (1) change the X shaft, Z shaft wire rod, bearing and motor. (2) increase the electric tool holder and the spindle encoder. (3) increasing the driving device of the axial motor, limiting the stroke switch running over the overrange, adding the frequency converter (customer needs), and the electrical parts required for processing and safety. (4) the scraper on both ends of the supporting shaft of the X axis and Z axis, the scraper of the ball screw bracket and the saddle, and the bed body are matched with the saddle guide pair of the saddle. (5) as required, additional protective facilities, such as the protective cover of the wire rod, the safety door, and the protective device for the trip switch, should be added. 2 the difference between the new machine transformation and the old machine overhaul lathe transformation. (1) the main shaft and tailstock part of the new machine has not been changed, and the spindle part and tailstock part need not be reformed. (2) the old machine large repair lathe because of long time use, guide rail has been worn, in order to ensure the long repair, can continue to use for a long time without deformation, must pass through the quenching process, and grinding guide, and grinding guide rail must ensure that the guide rail hardness more than HRC47. (3) the old machine overhaul lathe should be reconstructed and adjusted according to the needs of customers. 3 the accuracy test of new machine transformation and overhaul machine tool transformation is an important item of inspection. The accuracy is verified by the implementation of JB/T8324.1-1996 “precision CNC lathe horizontal lathe”. 4 the quality control of the renovation of the new lathe is as follows (1) scraping test. The new lathe modification is used to match and scrape the supporting surfaces of the two ends of the X and Z shafts, and to match and scrape the ball screw pair bracket and the bed saddle, and to match the bed and the guide rail of the saddle. The spindle and tail part of the lathe have not been removed. The test methods are as follows: using the matching surface for color painting, combining with each other, and relative friction, then testing the scraping point number of the scraping surface, and checking the bonding degree with the tape measure, in which the scraping and grinding point should not be less than 6 /25*25mm, 0.03mm’s plug junction. (2) parallelism test of lead screw and guide rail: when the screw bar is assembled, the parallelism between the screw bar and the guide rail must be less than 0.02mm. (3) the straightness of the guide rail in the vertical plane of the accuracy test G1 (only convex) should be guaranteed by the lathe manufacturer, not as a key inspection item. (4) the accuracy of G4, G5 and G6 in the accuracy test should also be ensured by ordinary lathe manufacturers, not as key inspection items. (5) the top two equal height of G11 bed head and tailstock is guaranteed by ordinary lathe manufacturers, not as a key project for quality control of manufacturers. Accuracy test of 5 user overhaul lathes As the grinding guide is carried out, the reference surface has been changed, so all the items in the precision inspection must be checked and the control should be strictly controlled to ensure the performance after the transformation. 6 other important quality control points for overhaul lathe transformation and new machine transformation. (1) rust check: all horizontal and longitudinal guide surfaces, spindle, spindle flange, and tailstock hollow sleeve. (2) the surface of non paint must be taken as antirust measures, such as cleaning, using grease and so on for antirust inspection: the scraping surface, wire rod and bearing must be cleaned before the assembly is carried out, and no red powder, iron and other dirty substances should be retained; there is no dust or dirt on the inside of the electric box and the inside of the protective cover. (3) leakage inspection: the spindle bearing and gear of the renovation lathe must be lubricated. The axial screw and bearing must be lubricated in the renovation of the lathe and the new lathe, and the cooling device must be made. (4) machine noise, temperature rise, rotation speed and air lift test: The main shaft is continuously transported to 4min at various speeds, and the highest speed is not less than 2 hours. The empty running time of the whole machine is more than 16h, and the simulation tests of circular turning, thread, outer circle and end face are carried out. After the spindle bearing temperature is stable, bearing temperature and temperature rise rolling bearing: temperature less than 70 degrees, temperature rise less than 40 degrees, sliding bearing: temperature less than 60 degrees, temperature rise less than 30 degrees. 3. The noise pressure level of machine tool is less than 83dB (A) under the condition of air transportation, and there is no abnormal scream and impact sound. The feed motion of each axis should be stable without obvious vibration, trembling and crawling. 4. The continuous air lift test of the machine tool has no fault during the continuous air transfer time, and runs reliably and stably. (5) transformation of the replacement parts of the user (including the maintenance of the parts of the machine tool): there are many transformation items of the replacement parts of the lathe, mainly the replacement of the spindle bearing, the axial wire rod, the axial motor, the axial bearing and the system. (1) replacing the spindle bearing: since the replacement of the spindle bearing is to ensure the precision of the machining circle and the end face, the noise of the spindle must not exceed 83dB (A) in the case of no abnormal noise when the bearing is replaced. Then the machining precision is tested and the surface roughness of the workpiece is tested. 2. Replace the axial screw inspection: check the accuracy of the position, ensure that the running of the running machine reaches the normal impact noise and noise within the prescribed range. Change the axial motor: because other projects have not been reformed, the inspection of the noise of the running machine only is tested, and the axial operation is without normal sound and noise. Check its axial reverse clearance to prevent the reverse difference in assembly due to assembly. 3. Replace axial bearing: for the replacement of axial bearing, we must ensure that the axial reverse difference reaches the requirement and check the abnormal noise. 4. Change the system test: replace the system, only check the system work.
Our workshop is machining services for CNC Machining parts, metal stamping parts, turning parts, cnc parts, Springs,coldforming parts, machining parts, screw machine parts, casting parts, forging parts supplier, Wecan produce machined parts according to your requirements.
machining parts: Hydraulic, valve, flange, automobile, shaft, bearing housing Bar, plate,welded part, marine part, winch part, sheet metal Equipment: Common lathe,CNC Machine,Milling,Turning,Stamping Machine,Spring Machine
Metal Process: CNC turning, milling, drilling, planning, grinding, welding. Surface Treat: Zn (Cr3 RoHS free or Cr6 ) plated, Cr /Ni plated, hot-dip galvanizing, paint,anodize, powder coating, brush, Polish Technical: Dedicated mechanical designer, experienced worker 3D design service inclusive of modeling, analysis and detailed drawing at normal cost
Quality: ISO 9001: 2008 Control strictly and follow specification Move fast to meet your urgent need caused by accident. Packing: Wooden case, hardboard, steel pallet, according to custom’s requirements
If you want to know more about cnc machining parts in China, Please contact us.
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Each component in the process system, including the manufacturing error of the machine tool, the tool and the fixture, the installation error, the wear and tear in use, directly affects the machining accuracy of the workpiece. In other words, in the process of processing, the process system will produce a variety of errors, which will change the position of the tool and workpiece in the process of cutting motion and influence the machining accuracy of the parts. These errors are related to the structural state and cutting process of the process system, and the main factors causing machining errors are: (1) the geometric error of the system
The error of processing principle
The error of the machining principle is due to the error caused by the approximate machining movement or the approximate tool profile. Because of the error in the machining principle, it is called the machining principle error. As long as the principle error is within the allowable range, the machining method is still feasible.
Geometric error of machine tool
The manufacturing error, installation error and wear in the machine tool directly affect the machining accuracy of the workpiece. Among them are the spindle rotation of machine tool, the linear movement of machine tool guide and the error of machine tool drive chain.
Manufacturing error and wear of cutting tools
The manufacturing error, installation error and wear of the tool affect the machining accuracy of the workpiece. During the cutting process, the cutting edge and blade face are strongly rubbed with the workpiece and chip, causing the tool to wear. When the tool wear reaches a certain value, the surface roughness of the workpiece increases, and the chip color and shape change, accompanied by vibration. Tool wear will directly affect cutting productivity, machining quality and cost.
Jig error
The fixture error includes positioning error, clamping error, fixture installation error and tool setting error. These errors are mainly related to the accuracy of fixture manufacturing and assembly. The positioning error of the fixture will be analyzed in detail.
The position of the workpiece in the fixture is determined by the contact between the positioning base and the locating element. However, due to the manufacturing error of the positioning base surface and the working surface of the positioning element, the actual position of each workpiece in the fixture is not consistent. After processing, the size of each workpiece must vary in size, resulting in errors. The machining error caused by the incorrect positioning of the workpiece on the fixture is called the positioning error and is expressed by delta D. It includes reference displacement error and datum non coincidence error. When using adjustment method to process a batch of workpieces, the essence of positioning error is the maximum variation of process datum in the direction of processing dimension. There is no location error in the process of cutting.
The location error is caused by the manufacturing error of the workpiece and the manufacturing error of the positioning element. The matching gap between the two parts and the process datum do not coincide with the positioning datum.
Standard non coincidence error
When the machining error is caused by the non coincidence of the positioning datum and the working procedure datum, it is called the datum non coincidence error. The size of the error is equal to the tolerance between the positioning datum and the working procedure datum, which is expressed in Delta B.
When the reference displacement error is located in the fixture, the positioning datum and the limit datum can not be reclosed because of the manufacturing tolerance and the minimum fit clearance of the positioning element in the fixture base surface of the workpiece. This makes the position of the workpiece inconsistencies and causes the error of the working size. This error is called the error. The error of the reference displacement is expressed in Delta Y. Figure 1-12a is a process diagram of circular grooves and key grooves. The working procedure is A and B. Fig. 1-12b is a schematic diagram of machining. The inner hole D of the workpiece is positioned on the cylindrical mandrel, O is the axis of the mandrel, and the C is the size of the cutter. The process datum of size A is the axis of the inner hole, and the positioning datum is also the axis of the inner hole. The two coincide, and the delta B = 0. However, because of the manufacturing tolerance and the minimum fit gap between the inner hole surface of the workpiece and the axis cylinder, the positioning datum (the axis of the workpiece hole) can not coincide with the limit reference (Axis axis). The positioning datum moves a segment of the distance relative to the limit datum, because the tool is adjusted to the position of a batch of workpiece after adjusting the position. Set no longer change (same as the limit reference position). Therefore, the position change of the positioning datum affects the size of the size A, causing error to the size A, which is the reference displacement error.
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In order to avoid the speed reducer cannot pass the factory test, one of the reasons is the existence of intermittent high noise in the reducer; the low noise reducer is 72.3Db (A) with the ND6 precision sound level meter, and the high noise reducer is 82.5dB (A), which can not reach the factory requirements. After repeated tests, analysis and improvement tests, the conclusion is that it is necessary to comprehensively control every link of production so as to effectively reduce the noise of gear transmission.
1, control the precision of gear: the basic requirements of gear accuracy: through practice, the precision of gear must be controlled in the GB10995 887~8 level, the line speed is higher than the 20m/s gear, the limit deviation of the tooth distance, the radial runout tolerance of the ring gear and the tolerance of the tooth direction must be stable to the 7 level precision. In order to achieve the 7 grade precision gear, the teeth should be inverted, and the root of the tooth should be strictly protected.
2, control the quality of raw materials: high quality raw materials are the prerequisites for the production of high quality products. Our company’s largest materials 40Cr and 45 steel make gears. No matter what way, raw materials must undergo strict chemical composition test, grain size measurement and purity evaluation after they are finished. The purpose is to adjust the deformation of heat treatment in time and improve the quality of tooth profile machining.
3, to prevent heat treatment deformation: gear blanks after rough machining into fine forgings, normalizing or quenching and tempering to achieve:
(1) soften steel parts for cutting.
(2) elimination of residual stress;
(3) refining grain and improving microstructure to improve mechanical properties of steel.
(4) prepare for the eventual handling of organizational readiness. It should be noted that in normalizing or tempering treatment, the temperature of the furnace must be kept uniform and the work position appliance is adopted to heat and cool the workpiece evenly and strictly forbidden to be stacked together. The gear that needs drilling to lighten weight should be arranged after heat treatment. The final heat treatment of the gear is used to quench the tooth surface with small deformation, and the tooth surface after high frequency quenching has high strength, hardness, wear resistance and fatigue limit, while the heart still maintains sufficient plasticity and toughness. To reduce the deformation. Low quenching temperature and shorter heating time, uniform heating and slow cooling should be adopted for high frequency quenching of tooth surfaces.
4, to ensure the precision of the tooth blank: the precision of the size of the gear hole needs to be around the middle difference of the deviation value of the hole, which is set at + 0.003~ + 0.005mm; if the super difference is in the range of the design requirements of the hole, it must be classified and transferred to the cutting process respectively. The end face runout and radial runout of gear blanks are 6 levels, set in the range of 0.01~0.02mm.
5, cutting processing measures: for purchased gear cutting tools must be tested, must meet the AA level requirements. When the gear tool is sharpened, the radial of the front edge of the cutter, the difference of the adjacent circumference of the chip tank, the maximum cumulative error of the circumferential section of the chip, and the parallelism between the front of the cutter tooth and the axis of the inner hole must be tested. On the premise of not affecting the strength of gear, the coefficient of tooth top height is increased, the 0.05~0.1m is increased, the tooth top height coefficient of the cutter is improved, and the gear root interference is avoided. The gear of M=1~2 is made by gear hob with the top of tooth, and the amount of repair is R=0.1~0.15m. Eliminate the burr on the top of the gear and improve the interference at the top of the gear. The gear cutting equipment must carry out a precision check every year. If it fails to meet the requirements, it must be repaired. The operator also has to carry out self-examination, especially in the radial clearance of the spindle of the machine tool under 0.01mm, the cutter shaft diameter less than 0.005mm, and the cutter shaft moving below 0.008mm. Tool installation accuracy: the tool radial runout is controlled below 0.003mm, and the end face is 0.004mm below. The accuracy of cutting tooling, the gap between spindle diameter and workpiece hole is guaranteed to be within 0.001~0.004mm. The thread on the spindle must be positioned under the top class, grinding by the thread bed: the perpendicularity is less than 0.003mm, and the diameter is less than 0.005mm. The nut must be ensured that the internal thread is fitted with the datum plane once, and the parallelism of the gasket is less than 0.003mm.
6, civilized production: more than 30% of gear transmission noise comes from burrs and bumps. It is a passive practice for some factories to remove burrs and bruises before gear boxes are assembled. (1) gear shaft parts, the gear hobbing teeth immediately put on the special plastic protective sleeve then into the next process, and with a special plastic protective sleeve to the storage and delivery. (2) honing process, reducing the roughness of the tooth surface, removing burrs, and preventing knock injuries, can effectively reduce gear transmission noise.
7, take other materials and heat treatment, surface treatment methods: (1) can use powder metallurgy molding technology, gear forming after tooth high frequency quenching. (2) use soft iron and gear to process soft nitriding. (3) using 40Cr material, after gear cutting, soft nitriding or copper plating on teeth is used. In a comprehensive way, the noise of the gear transmission should be cured, the gear material and heat treatment are essential, the precision of the tooth billet is guaranteed, the gear precision is the key and the civilized production is the foundation.
