August 2020 – CNC Machining & Turning, Milling, Metal parts

How to improve the quality of CNC processing

It is required to focus on ensuring the processing quality and producing the key parts in small and medium batches: CNC grinder can realize high precision, high quality and high efficiency grinding under the control of computer. Computer gong processing Dongguan computer gong processing high speed CNC machining mechanical parts machining CNC machining it can save a lot of special processing equipment than special grinding machine processing, has a strong flexible manufacturing capacity and better economic benefits. Compared with ordinary grinding machine, it can eliminate many artificial interference factors in the long process of complex machining, and has good precision consistency and interchangeability, and high processing efficiency.

The parts processed by CNC CNC lathe should conform to the process characteristics that can give full play to the multi process centralized processing of CNC grinder. When CNC grinding machine processes parts, the situation of grinding wheel cutting workpiece is exactly the same as that of corresponding non CNC grinder, but it can carry out some complex processing with processing accuracy requirements. For example, in the grinding range, ordinary grinder is mainly used for grinding cylindrical surface and circular CNC lathe In addition, it can also grind toroidal surface and complex combined surface of various forms mentioned above.

The processing batch size of parts should be larger than that of economic batch of parts by ordinary lathe. When NC lathe is used to process medium and small batch parts by non CNC grinder, due to various reasons, the pure cutting time only accounts for 10% – 30% of the actual working hours. Computer gong processing, Dongguan computer gong processing, high-speed CNC machining, mechanical parts processing, CNC machining, this proportion may rise to 70% – 80% when it is processed on the CNC grinder with multi process concentration, such as grinding center, but the preparation time for adjustment is often much longer, so it will become uneconomical if the batch size of parts is too small.

Some special parts processed by CNC lathe are considered. Although some parts are processed in small batches, ordinary lathes have complex shapes, high quality and good interchangeability, which can not meet the above requirements on non CNC grinding machines. Computer gong processing, Dongguan computer gong processing, high speed CNC machining, mechanical parts processing, CNC processing can only be arranged on CNC grinding machines, such as parabola Cycloid cam and special surface mirror, etc.

What is semi finishing

With the same cutting tool and cutting parameters, semi finishing and finishing can correct various geometric errors of cutting tools and elastic deformation of parts, It is easy to ensure the size and finish machining the important bottom surface. Don’t think that high-precision parts processing is a common processing without paying attention to it. If we ignore some details, it may have a great impact on the processing of parts, so what are the matters needing attention in the processing of high-precision parts?

1. For high-precision parts, the processing is very strict, and the processing procedures include feed in and out. Computer gong processing Dongguan computer gong processing high speed CNC machining mechanical parts CNC machining CNC machining there are specific requirements for size and accuracy, such as how many micrometers are 1 mm plus or minus. If the size is wrong too much, it will become waste. At this time, it is equivalent to reprocessing, time-consuming and laborious. Sometimes, the whole processing material will be scrapped, which will increase the cost The parts will definitely not work.

For example, there are strict requirements for the size of the cylindrical parts, otherwise, there is a strict requirement for the diameter of the parts; There are strict requirements for length, width and height, as well as positive and negative errors. For example, for an embedded cylinder (take the simplest basic parts as an example), if the diameter is too large and exceeds the allowable range of error, it will cause the situation that it can not be inserted. If the actual diameter is too small and exceeds the lower limit of allowable negative error value, it will cause the problem of too loose insertion and not firm. These are all unqualified products, or the cylinder length is too long or too short, beyond the allowable range of error, are unqualified products, are to be scrapped, or reprocessing, which will inevitably cause the increase of cost.

3. The requirement of high-precision parts processing is actually the most important dimension problem. It must be processed in strict accordance with the additional drawings, such as computer gong processing, Dongguan computer gong processing, high-speed CNC processing, mechanical parts processing, CNC processing, and the actual size processed by CNC processing is certainly not the same as the theoretical size of the drawing, but as long as the processing size is within the allowable range of error, it is qualified zero Parts, therefore, the requirements of precision parts processing is strictly in accordance with the theoretical size of processing.

4. The second is the advanced precision parts processing equipment and testing equipment, advanced processing equipment makes the processing of precision parts more simple, higher precision and better effect. The testing equipment can detect the parts that do not meet the requirements, so that all products sent to customers really meet the requirements.

Parts processing steps

The first thing to do is to open the material. After opening, some small accessories, such as the production of small accessories, can go to the punching machine and then carry out Gong cutting or CNC processing. Computer gong processing, Dongguan computer gong processing, high-speed CNC processing, mechanical parts processing, CNC processing, this is a lot in the production of glasses accessories and auto parts. And do container: is to open the material punch after welding, and then sand after the oil spray, and then assemble the accessories can be shipped. And for hardware accessories, but also a lot of grinding after the surface treatment, electroplating or oil spray. Then welding or screw assembly packaging shipment.

All employees should check whether their clothes meet the work requirements before entering the work. Slippers, high-heeled shoes and clothes that affect safety are not allowed. Those with long hair should wear safety helmets. Computer gong processing, Dongguan computer gong processing, high-speed CNC processing, mechanical parts processing, CNC processing, keep correct posture, have enough spirit to cope with the work, and if you find that you are not feeling well, you should immediately leave the post and report to the leader. During operation, it is necessary to concentrate on the operation, and it is strictly prohibited to chat and cooperate with each other. The operator should not operate under the state of irritability and fatigue, so as to avoid accidents and ensure the safety of operation.

2、 Before the machine works, check whether the moving part is filled with lubricating oil, and then start and check whether the clutch and brake are normal, and run the machine tool at idle speed for 1-3 minutes. It is strictly forbidden to operate in case of mechanical failure.

3、 When replacing the mold, the power supply should be turned off first, and the moving Department of the punch should stop running before the mold can be installed and debugged. After installation and adjustment, manually move the flywheel for two times to check whether the upper and lower dies are symmetrical and reasonable, whether the screws are firm, and whether the blank holder ring is in a reasonable position.

4、 Only when all other personnel leave the mechanical working area and take away the sundries on the worktable, can the power supply be started to start the machine.

5、 After the machine is started, one person will transport materials and operate the machine. Other people are not allowed to press the electric building or step on the pedal switch board, nor can they put their hands into the mechanical working area or touch the moving parts of the machine with their hands. When the machine is working, it is forbidden to reach into the slider working area, and it is forbidden to take and place the workpiece by hand. The standard tools must be used when taking and placing the workpiece in the die. In case of abnormal sound or machine failure

How to get parameters for machining mechanical parts

It is difficult to guarantee the size of the curve groove at the front and lower end of the part, and the two 90 ° notches are not closed. It is necessary to do auxiliary line closure before programming.

There are two ellipses in different directions on the inner contour of the back, such as computer gong processing, Dongguan computer gong processing, high-speed CNC processing, mechanical parts processing, CNC machining center, which consists of inner and outer hexagonal petals composed of circular arcs, and two arc curved islands above and below. These elements need to be rounded in processing, so it is more convenient to select a reasonable shape.

2. Analysis of parts processing technology

When CAXA is used to manufacture engineering parts, there is no need to draw complete parts for reprocessing. Firstly, the downtime is long and the processing time is wasted. Secondly, when selecting local processing, the elements of parts will interfere, which makes it inconvenient to get the program path.

When machining plane contour elements, the software supports only drawing out the contour line of parts for rough and finish machining. Surface machining can be programmed by solid or surface machining. Surface must be used to realize local machining, and some finishing commands can only use curved surface to select machining.

The rough machining command can not only realize rough machining, but also be used as finishing command.

The finishing command can use the track translation to form multiple levels, and the connecting track becomes a whole rough machining command; the rough machining command can change a layer of machining track into a finishing command by setting the layer height.

The plane contour elements of “CAXA Manufacturing Engineer” can use plane area rough machining and contour line finishing to finish the rough and finish machining of parts, and can also use contour finishing to do rough machining. Computer gong machining, Dongguan computer gong machining, high speed CNC machining, mechanical parts processing, CNC surface roughing can use equal height rough machining, or two finishing commands of parameter line finishing and three-dimensional offset surface can be used for rough and finish machining.

Due to the high dimensional accuracy in the drawing, it is decided to use rough machining, semi finishing and finishing to achieve dimensional accuracy. Semi finishing and finishing use the same cutting tool and cutting parameters, which can correct various geometric errors of the cutter and elastic deformation of parts, and ensure the size easily. It is also necessary to finish the important bottom surface.

The part is processed by FANUC CNC machining center. All tool paths are generated according to FANUC post format, and the transmission uses CAXA’s own communication function according to FANUC settings. The larger surface program is processed online. The later processing programming ends with tool path. For parts such as box, bracket and connecting rod, the plane should be machined first and then the hole should be processed. In this way, the hole can be processed by plane positioning, which ensures the accuracy of plane and hole orientation, and brings convenience to the processing of holes on the plane.

2、 Machining datum plane first

In the process of parts processing, the surface as the positioning reference should be processed first, so as to provide the precise reference for the subsequent processing as soon as possible. It is called “benchmark first”.

3、 Finishing

The finishing of the primary surface (such as grinding, honing, finishing grinding / rolling, etc.) should be carried out at the final stage of the process road. After processing, the surface finish should be above ra0.9um, and slight bumping will damage the appearance. In Japan, Germany and other countries, after finishing, it is necessary to use flannelette for maintenance. It is absolutely forbidden to touch the workpiece directly with hands or other objects to avoid polishing The appearance of the finishing process is damaged by the transfer and installation between processes.

4、 Distinguish processing stages

The appearance with high machining quality is divided into three stages: rough machining, semi finishing and finishing

Application of CNC milling cutter

Milling cutters are often used to process boss and groove, and are generally not used to process the blank surface – because the hardening layer and sand inclusion on the surface of the blank will speed up tool wear.

When machining the surface of blank or rough machining hole, the end milling cutter or corn milling cutter inlaid with cemented carbide can be selected for strong cutting.

The end mill C is often used when machining the peripheral contour of a plane workpiece.

In order to improve the accuracy of the groove width and reduce the number of tool changes, the milling cutter with a diameter of 7 than the groove width can be used to mill the middle part of the groove first, and then use the tool radius compensation function to mill the two sides of the groove.

Ball end milling cutter, ring milling cutter, drum milling cutter, cone milling cutter and disc milling cutter are often used in machining solid curved surface or variable bevel profile.

When the machining allowance is small and the requirement of surface roughness is high, the face milling cutter with cubic boron nitride blade or ceramic insert blade can be selected for high-speed cutting.

According to the principle of NC machining, the overall consideration is made according to the requirements of workpiece processing drawings, and the format specified by CNC milling machine is used for editing. Computer gong processing, Dongguan high-speed computer gong processing, Dongguan mold processing, Dongguan Mechanical parts processing and CNC machining are input according to the action sequence. Thus, we can know the precise machining technology of CNC lathe while compiling the NC program It is also necessary.

1. Determine the process flow. The processing technology of CNC milling machine is very similar to that of ordinary machine tool. Through analyzing the workpiece, specify the processing route, select the processing procedure, select the machine tool, fixture and cutter. Determine the equipment baseline position and cutting amount. The difference is that CNC machine tools need to program the operation process.

2. Calculate the tool coordinate value. In order to facilitate the programming and calculation of tool path coordinates. The coordinates of the workpiece and the size and shape of the part must be calculated first, so as to determine the whole machining path of the tool.

3. Write processing program, for simple workpiece can be written manually, but for complex processing workpiece, automatic programming is needed.

4. There are many ways to input program into CNC system, such as computer gong processing, Dongguan high-speed computer gong processing, Dongguan mold processing, Dongguan Mechanical parts processing, CNC processing, which are mainly completed by the operation panel of the CNC control system, and the interface between the computer and the CNC system can be connected to input the program through the computer.

Classification of machining

The classification of machining is as follows:

Design datum: the datum used to determine the position of other points, lines and planes on the part drawing, which is called design datum.

Process datum: the datum used in the process of machining and assembling parts, which is called process datum. According to different uses, the process datum of Dongguan mould can be divided into assembly datum, measuring datum and locating datum.

(1) Assembly datum: the datum used to determine the position of parts in parts or products during assembly, which is called assembly datum.

(2) Measurement datum: the datum used to check the size and position of machined surface, which is called measuring datum.

(3) Positioning datum: the datum used for workpiece positioning during machining, which is called positioning datum. For the surface (or line, point) as the positioning reference, only the rough surface can be selected in the first process, such as computer gong processing, Dongguan computer gong processing, high-speed computer gong processing, mechanical parts processing, computer gong processing. This positioning surface is called rough datum. In the future, the machined surface can be used as the positioning reference, and this positioning surface is called precision reference. Process datum: the datum used in the process of machining and assembling parts, which is called process datum. According to different uses, process datum can be divided into assembly datum, measuring datum and locating datum.

(1) Assembly datum: the datum used to determine the position of parts in parts or products during assembly, which is called assembly datum.

(2) Measurement datum: the datum used to check the size and position of machined surface, which is called measuring datum.

(3) Positioning datum: the datum used for workpiece positioning during machining, which is called positioning datum. Computer gong processing, Dongguan high speed computer gong processing, Dongguan mold processing, Dongguan Mechanical parts processing, CNC machining as the positioning reference surface (or line, point), in the first process, only the rough surface can be selected. This positioning surface is called the rough datum. In the following processes, the machined surface can be used as the positioning reference, and the positioning surface is called the precise reference.

In the process of turning a blank into a finished product, the total thickness of the metal layer cut off on a machining surface is called the total machining allowance of the surface. The thickness of the metal layer cut by each process is called the machining allowance between processes. For the rotating surface such as outer circle and hole, the machining allowance is considered from the diameter, so it is called symmetrical allowance (i.e. bilateral allowance), that is, the actual thickness of the metal layer cut off is half of the machining allowance on the diameter. The machining allowance of the plane is the unilateral allowance, which is equal to the actual thickness of the metal layer removed. The purpose of leaving machining allowance on the workpiece is to remove the machining errors and surface defects left by the previous process, such as the surface cold and hard layer, air hole and sand inclusion layer on the casting surface, oxide scale, decarburization layer and surface crack on the forging surface, internal stress layer and surface roughness after cutting. The precision and surface roughness of the workpiece are improved. The size of machining allowance has great influence on machining quality and production efficiency. If the machining allowance is too large, it not only increases the labor of machining, reduces the productivity, but also increases the consumption of materials, tools and power, and increases the processing cost. If the machining allowance is too small, it can not eliminate all kinds of defects and errors in the previous process, and can not compensate for the clamping error in this process, resulting in waste products. The selection principle is to make the allowance as small as possible on the premise of ensuring the quality.

CNC milling head configuration

1. The vertical milling head is equipped with tx400 heavy gantry milling head and double rectangular guide rail with strong rigidity;

2. Milling head equipped with ball screw, pneumatic broach device, computer gong processing, Dongguan computer gong processing, Shenzhen computer gong processing, mechanical parts processing, Guangzhou computer gong processing has servo motor drive;

3. The side milling head is equipped with V5 type gantry milling head, Dongguan high-speed computer gong processing is equipped with independent lubrication device, and the lifting is driven by ordinary reducer and frequency conversion speed regulation;

4. The three-axis CNC system with one key conversion from general milling to CNC milling can be programmed and operated manually by using the extended panel, which is highly realizable in the actual machining process;

5. The machine bed forward and backward, beam up and down, vertical milling head up and down are equipped with Taiwan ball screw, driven by servo motor;

6. Equipped with synchronous belt and synchronous wheel;

7. Hand held electronic hand wheel unit, convenient for three axis tool setting;

8. Dongguan machine parts processing unique beam lifting safety interlock device to ensure the repeated positioning accuracy of the machine tool;

9. The cycloid pump set is lubricated continuously with low failure rate.

Shape design and manufacturing of product parts in CNC manufacturing industry

The shape, size and dimensional accuracy, surface quality and other technical requirements and production batch of manufacturing product parts are specially designed and manufactured. Therefore, it is very important to study the modern design and manufacturing technology of die and mold, the practical experience in the process of mold design and manufacturing, as well as the technical management and process control of the production process, so as to form a standard and form an expert system, which is of great importance to improve the level of mold production technology and management, and to improve the core competitiveness of mold enterprises.

Today, the development process of production mode. Its main achievements and characteristics are as follows

Milling technology and precision form grinding technology are widely used, and the precision coordinate grinding technology for precision machining of round hole and mold hole with precise hole spacing is realized. It provides the key technology for EDM and WEDM. The specialization, serialization and standardization of die materials are realized. During this period, the high development of mold standardization, such as computer gong processing, Dongguan high speed computer gong processing, Dongguan mold processing, Dongguan Mechanical parts processing, CNC processing, fully using standard parts and components in mold production is not only a major achievement and feature of mold industrial production mode, but also an important technical basis for realizing modern mold production mode. With the progress and development of computer and machine tool industry, die CAD / CAM and CAD / CAM / CAE have become widely used production technologies. They are combined with high standardization to form a modern mold production mode, that is to realize the informatization and digital mold production mode of mold design and manufacturing.

Design: during the period of manual workshop mold making and the early stage of industrial mold manufacturing, mold design was not carried out, and mold manufacturing was completely dependent on the experience and skills of mold makers. With the development of industry, the application of die and mould is becoming more and more extensive, the requirement of mould performance and quality is getting higher and higher, and the production technology is constantly improving. Designing and drawing the die structure system diagram and parts drawing, defining the design requirements and manufacturing technical conditions are the first task and core technology in the mold production process, which has been evolving until now.

However, with the progress of computer and CNC machine tool industry, and the wide application of CNC machine tools such as machining center, the mold design method and method have produced substantial and breakthrough progress. Mold design includes the following three aspects: mold part modeling and structure design, mold structure system design, mold structure parameter calculation and setting. Mold design process and content. The die with high precision needs to be processed by high-precision CNC machine tool, and the die material and forming process have strict requirements, and CAD / CAE / CAM die technology is also needed to design and analyze. Due to the special requirements of some parts, the mold also needs to use advanced technology such as hot runner, gas assisted molding, nitrogen cylinder and so on. The manufacturer shall be equipped with CNC, EDM, WEDM and NC profiling milling equipment, high-precision grinder, high-precision CMM, computer design and relevant software. Generally, large stamping dies (such as automobile cover parts mould) should consider whether the machine tool has blank holder mechanism, or even edge lubricant, multi position progressive, etc. In addition to stamping tonnage, punching times, feeding device, machine tool and die protection device should be considered.

The manufacturing means and technology of the above mould are not possessed and mastered by every mould manufacturer and enterprise. When choosing a cooperative manufacturer, we must understand its processing ability, not only depending on the hardware equipment, but also combining the management level, processing experience and technical strength. For the same set of mould, there is sometimes a big gap between quotations from different manufacturers. You should not pay more than the value of the mold, at the same time, should not be less than the cost of the mold. Computer gong processing, Dongguan high-speed computer gong processing, Dongguan mold processing, Dongguan Mechanical parts processing, CNC processing mold manufacturers, like you, should make reasonable profits in business. Ordering a set of molds with a much lower price would be the beginning of trouble. Users should start from their own requirements and comprehensively measure. Avoid multi cooperation, try to make mold and product processing one-stop, with qualified mold (test piece qualified), not necessarily can produce a batch of qualified products. This is mainly related to the machine tool selection, forming process (forming temperature, forming time, etc.) and the technical quality of the operator. With a good mold, but also have good forming processing, the best is a one-stop cooperation, try to avoid multi cooperation. If the conditions are not met, one party should be fully responsible for the contract, and it must be written clearly at the same time.

The equipment of the mold department mainly includes CNC computer gongs, spark machines, milling machines, drilling machines, grinding machines and other complete sets of equipment; the injection molding department equipment has a number of precision injection molding machines, our professional engineering and technical personnel can fully meet your requirements in engineering design, mold development and manufacturing, product injection molding, and quality assurance

The development process of CNC machining production

According to the product drawings or templates provided by customers, we can deliver high-quality molds and qualified mold samples within the time required by customers. At the same time can provide: participate in customer hardware product development, sample formulation, mold design and manufacturing, hardware parts production one-stop service.

Special design and manufacturing will be carried out according to the shape, size and dimensional accuracy, surface quality and other technical requirements and production batch of manufacturing products. Therefore, it is very important to study the modern design and manufacturing technology of die and mold, the practical experience in the process of mold design and manufacturing, as well as the technical management and process control of the production process, so as to form a standard and form an expert system, which is of great importance to improve the level of mold production technology and management, and to improve the core competitiveness of mold enterprises.

Today, the development process of production mode. Its main achievements and characteristics are as follows

Milling technology and precision form grinding technology are widely used, and the precision coordinate grinding technology for precision machining of round hole and mold hole with precise hole spacing is realized. It provides the key technology for EDM and WEDM. The specialization, serialization and standardization of die materials are realized. During this period, the high development of mold standardization, such as computer gong processing, Dongguan high speed computer gong processing, Dongguan mold processing, Dongguan Mechanical parts processing, CNC processing, fully using standard parts and components in mold production is not only a major achievement and feature of mold industrial production mode, but also an important technical basis for realizing modern mold production mode. With the progress and development of computer and machine tool industry, die CAD / CAM and CAD / CAM / CAE have become widely used production technologies. They are combined with high standardization to form a modern mold production mode, that is to realize the informatization and digital mold production mode of mold design and manufacturing.

Design: during the period of manual workshop mold making and the early stage of industrial mold manufacturing, mold design was not carried out, and mold manufacturing was completely dependent on the experience and skills of mold makers. With the development of industry, the application of die and mould is becoming more and more extensive, the requirement of mould performance and quality is getting higher and higher, and the production technology is constantly improving. Designing and drawing the die structure system diagram and parts drawing, defining the design requirements and manufacturing technical conditions are the first task and core technology in the mold production process, which has been evolving until now.

However, with the progress of computer and CNC machine tool industry, and the wide application of CNC machine tools such as machining center, the mold design method and method have produced substantial and breakthrough progress. Mold design includes the following three aspects: mold part modeling and structure design, mold structure system design, mold structure parameter calculation and setting. Mold design process and content. The die with high precision needs to be processed by high-precision CNC machine tool, and the die material and forming process have strict requirements, and CAD / CAE / CAM die technology is also needed to design and analyze. Due to the special requirements of some parts, the mold also needs to use advanced technology such as hot runner, gas assisted molding, nitrogen cylinder and so on. The manufacturer shall be equipped with CNC, EDM, WEDM and NC profiling milling equipment, high-precision grinder, high-precision CMM, computer design and relevant software. Generally, large stamping dies (such as automobile cover parts mould) should consider whether the machine tool has blank holder mechanism, or even edge lubricant, multi position progressive, etc. In addition to stamping tonnage, punching times, feeding device, machine tool and die protection device should be considered.

The manufacturing means and technology of the above mould are not possessed and mastered by every mould manufacturer and enterprise. When choosing a cooperative manufacturer, we must understand its processing ability, not only depending on the hardware equipment, but also combining the management level, processing experience and technical strength. For the same set of mould, there is sometimes a big gap between quotations from different manufacturers. You should not pay more than the value of the mold, at the same time, should not be less than the cost of the mold. Computer gong processing, Dongguan high-speed computer gong processing, Dongguan mold processing, Dongguan Mechanical parts processing, CNC processing mold manufacturers, like you, should make reasonable profits in business. Ordering a set of molds with a much lower price would be the beginning of trouble. Users should start from their own requirements and comprehensively measure. Avoid multi cooperation, try to make mold and product processing one-stop, with qualified mold (test piece qualified), not necessarily can produce a batch of qualified products. This is mainly related to the machine tool selection, forming process (forming temperature, forming time, etc.) and the technical quality of the operator. With a good mold, but also have good forming processing, the best is a one-stop cooperation, try to avoid multi cooperation. If the conditions are not met, one party should be fully responsible for the contract, and it must be written clearly at the same time.

The equipment of the mold department mainly includes CNC computer gongs, spark machines, milling machines, drilling machines, grinding machines and other complete equipment; the equipment of the injection molding department has a number of precision injection molding machines, and our professional engineering and technical personnel can be engaged in engineering design, mold development and manufacturing, product injection molding, And its quality assurance fully meet your requirements, computer gong processing | Dongguan high speed computer gong processing | Dongguan mold processing | Dongguan Mechanical parts processing | CNC processing. With the advanced technology and management mode, the system of specialized production is implemented according to the type of mold products

What is a vacuum blister mold

The design of vacuum suction molding mold includes batch size, molding equipment, precision conditions, geometric design, dimensional stability and surface quality. Properties and surface quality.

1. Batch size experiments, mold production hours, computer gongs processing plant Dongguan high speed computer gong processing plant Dongguan mold processing plant Dongguan Mechanical parts processing plant CNC processing can be made of wood or resin. However, if the mold used in the experiment is to obtain the data of shrinkage, dimensional stability and cycle time of the product, the single cavity mold should be used for the experiment, and it can be used in the production conditions. Molds are generally made of gypsum, copper, aluminum or aluminum steel alloys, and aluminum resin is rarely used.

2. In geometric design, dimensional stability and surface quality should be considered comprehensively. For example, the product design and dimensional stability require the use of female die (female mold), but the product with high surface gloss requires the use of male mold (punch). In this way, the ordering party of plastic parts will take these two points into consideration, so that the product can be produced under the best conditions. Experience has proved that the design that does not meet the actual processing conditions is often a failure. As a special process equipment with high service life, mould has the following production characteristics:

(1) It belongs to single piece and multi variety production. Dongguan mold production tells you that the mold is a special process equipment for high life, each mold can only produce a certain shape, size and precision of the parts, which determines that the mold production belongs to the nature of single piece, multi variety production procedures.

(2) The objective requirement of mould production cycle is short. Dongguan mold production tells you that due to the acceleration of new product update and market competition, the mold production cycle is required to be shorter and shorter objectively. The production management, design and process of die should meet the objective requirements.

(3) Complete set of mould production. When a part needs more than one pair of molds to process, each pair of molds often implicate and influence each other. Only when the final part is qualified, this series of molds can be considered as qualified. Therefore, this feature must be fully considered in production and planning.

(4) Mold test and repair. Dongguan mold production tells you that due to the above characteristics of mold production and the experience of mold design, the mold must pass the test punching or pressure test after assembly, and finally determine whether it is qualified; at the same time, some parts need to be repaired before final determination. Therefore, there must be a certain trial period in the production schedule.

(5) Mold processing is developing towards mechanization, precision and automation. At present, the requirement of die precision for product parts is higher and higher. There are more and more molds with high precision, high life and high efficiency. The machining accuracy mainly depends on the accuracy of machine tools, processing conditions, measurement means and methods. At present, the use of precision molding grinder, CNC high-precision surface grinder, precision CNC WEDM machine, high-precision continuous track coordinate grinder and CMM are becoming more and more popular, which makes mold processing develop to high-tech intensive.

Because different molding molds have been applied in many fields, and the manufacturing technology of professional molds has also changed and developed in recent years, the general design rules of vacuum Blister molding molds are summarized in this part.

The design of vacuum suction molding mold includes batch size, molding equipment, precision conditions, geometry design and dimensional stability

3. During the molding process, the dimension stability of the contact surface between the plastic part and the mold is better than that of the part leaving the mold. If the material thickness is required to be changed due to the requirement of material stiffness in the future, it may lead to the conversion of male mold to female mold. The dimensional tolerance of plastic parts shall not be less than 10% of shrinkage.

4. The surface structure of the plastic part should be formed at the contact with the mold in terms of the range covered by the molding material. Computer gong Processing Factory Dongguan high speed computer gong Processing Factory Dongguan mold Processing Factory Dongguan Mechanical parts processing factory CNC processing if possible, the surface of plastic parts should not contact with the mold surface. It’s like using a female mold to make bathtubs and washbasins.

5. If mechanical horizontal saw is used to saw off the clamping edge of plastic parts, there should be at least 6-8mm allowance in the height direction. Other finishing work, such as grinding, laser cutting or jet, must also be allowed. The gap between cutting lines of knife edge die cutting is the smallest, and the distribution width of trimming punching die is also very small.

6. Shrinkage and deformation, plastic is easy to shrink (e.g. PE), some plastic parts are easy to deform, no matter how to prevent, plastic parts will deform in the cooling stage. In this condition, it is necessary to change the shape of the mold to adapt to the geometric deviation of the plastic part. For example, although the wall of the plastic part remains straight, its reference center has deviated by 10 mm; the mold base can be raised to adjust the shrinkage of this deformation.

7. Shrinkage, the following shrinkage factors must be considered when manufacturing Blister molding mold.