Category Archive CNC Technology

CNC machining is CNC machine tool processing, that is, a set of processing program is compiled by computer, and the article is processed by digital milling machine. The same is true for CNC processing of aluminum profiles. Including cutting, drilling, tapping and so on, basically depends on CNC operation. CNC processing can reduce the damage rate of products, which is favored by aluminum profile manufacturers.

Advantages: ① greatly reduce the number of tooling, complex processing forms of parts do not need complex tooling. If we want to change the form and size of parts, we only need to modify the part processing program, which is applicable to the development and modification of new products.

② The machining quality is stable, the machining precision is high, and the repeated precision is high, which is suitable for the processing requirements of aircraft.

③ It can reduce the time of production planning, machine tool adjustment and process inspection, and reduce the cutting time due to the use of good cutting amount.

④ It can be used to machine the complex surface which is difficult to machine by conventional way, and even can process some parts which cannot be observed.

The disadvantage is that the processing equipment is relatively high, and the quality requirements of operators are high.

CNC is also called computer gong, cncch or CNC machine tool. In fact, it was introduced into the Pearl River Delta of mainland China. It is actually a CNC milling machine. In Guangzhou, Jiangsu, Zhejiang and Shanghai, a new type of machining technology is called CNC machining center. Its main work is to compile processing programs, that is, to convert the original manual work into computer programming. So what are the basic conditions for Dongguan CNC machining center maintenance?

1、 Basic conditions of maintenance personnel in CNC machining center

The quality of repair work depends on the personnel condition. It is necessary for repair workers to have the following basic conditions: a high sense of responsibility and outstanding professional ethics; a wide range of knowledge, grasp the basic knowledge of computer skills, analog and digital circuits, automatic control and motor drive, inspection skills and mechanical processing technology and a certain level of foreign language; through outstanding skills training, master the work of CNC, drive and PLC Professional principle, understand CNC programming and programming language; understand the structure, have experimental skills and strong ability to operate; grasp a variety of commonly used (especially on-site) testing instruments, appearance and various maintenance tools.

2、 The conditions of CNC machining center maintenance methods

Prepare common spare parts and accessories; get practical assistance or supply of micro electronic components at any time; repair necessary things, instruments, appearance, wiring and microcomputer. The best way is to have a small programming system or programmer to assist equipment debugging; complete materials, manuals, circuit diagrams, repair instructions (including CNC operation instructions), interface, adjustment and diagnosis, driver instructions, PLC instructions (including PLC user program list), component forms, etc.

CNC lathe processing suitable for which industries? The following brief introduction:

CNC lathe is used for processing: straight line cylinder, oblique line cylinder, arc and various threads.

CNC lathe, turning center, is a kind of high precision, high efficiency automatic machine tool. Equipped with multi station turret or power turret, the machine tool has ordinary processing performance. It can process linear cylinder, oblique line cylinder, circular arc and various kinds of thread, groove, worm and other complex workpieces. It has various compensation performance of linear interpolation and circular interpolation, and has carried forward the excellent economic effect in the batch production of complex parts.

Numerical control technology refers to the technology of controlling the behavior of one or more mechanical equipment with digital instructions composed of numbers, ink and symbols. Numerical control usually selects general or special computer to complete digital program control, so numerical control is also called computer numerical control, referred to as CNC, overseas is usually called CNC, rarely use the meaning of NC. It usually controls the position, angle, speed and other mechanical quantities and the switch value related to the mechanical energy flow direction. The occurrence of numerical control depends on the appearance of data carrier and binary mode data operation. In 1908, the perforated sheet metal exchange data carrier came out; at the end of the 19th century, the control system with paper as data carrier and auxiliary performance was created; in 1938, qingxiangnong carried out rapid data calculation and transmission at MIT, laying the foundation of modern computer, including the basic computer digital control system. Numerical control technology is closely integrated with machine tool control. In 1952, the first CNC machine tool came out, which became an epoch-making event in the history of the world’s machinery industry and promoted the development of automation.

Numerical control technology is also called computer numerical control technology, it is the use of computers to complete the digital program control technology. This technique uses a computer to control the movement track of the equipment and the operation sequence logic of the peripheral devices according to the control program stored in advance. Because the computer is used to replace the numerical control device composed of hardware logic circuit, the storage, processing, calculation, logic inference and other control functions of input operation instructions can be completed through computer software. The micro instructions generated by processing are transmitted to the servo drive device, driving motor or hydraulic actuator to start the equipment running.

Traditional machining is manual operation of ordinary machine tools. When machining, metal is cut by hand, and the accuracy of products is measured by eyes with calipers and other equipment. The modern industry has already used the machine tools controlled by computer Digitalization for homework. CNC machine tools may as well follow the program prepared by technical staff to automatically process any products and parts directly. This is what we call CNC machining. NC machining is not only used in any boundary of all mechanical processing, but also the development trend and important and necessary technical means of mold processing.

The above is the practical boundary of CNC lathe processing, I hope to help you.

The given machining route of CNC lathe refers to the path that the turning tool moves from the tool setting point (or the fixed origin of the machine tool) until it returns to the point and ends the machining program. It includes the path of cutting and the path of non cutting empty stroke such as cutting in and cutting out. Today we will learn what advantages CNC processing has?

① A large number of tooling is reduced, and complex tooling is not needed to process parts with complex shapes. If you want to change the shape and size of parts, you only need to modify the part processing program, which is suitable for the development and modification of new products.

② The machining quality is stable, the machining precision is high, and the repetition precision is high, which can meet the processing requirements of aircraft.

③ In the case of multi variety and small batch production, the production efficiency is higher, the time of production preparation, machine tool adjustment and process inspection can be reduced, and the cutting time is reduced due to the use of the best cutting amount.

④ It can machine complex surface which is difficult to process by conventional method, and even can process some parts which cannot be observed.

With the improvement of living standards, the quality of life has been greatly improved. Many people are thinking about how to improve the quality of life. The better the technology is, the more market demand will be, and the higher the efficiency will be. So how to improve the quality of CNC machining parts? Let’s learn about it together

1. Before CNC machining, use the calibration table to check whether the tool swing is within the allowable tolerance range. The tool head and lock nozzle should be blown clean with air gun or cleaned with cloth before machining. Foreign matters have a certain impact on the accuracy and quality of the workpiece.
2. The use of special cutting oil products can effectively avoid the problem of poor precision due to the performance of rapeseed oil, mechanical oil and other non-specific oil products. At the same time, the special cutting oil has good anti-oxidation and corrosion ability, which can effectively prevent the yellow robe rust problem.
3. CNC machining program sheet should be consistent with the reference angle direction marked on the mold, and then check whether it is aligned with the upper 3D drawing, especially for the workpiece with water transportation, it is necessary to see whether the 3D drawing is consistent with the water transportation of the workpiece. If there is any ambiguity, it is necessary to timely feed back to the programmer or find the fitter to check the 2D drawing to see whether the 2D and 3D datum angles are consistent.
4. Before processing, it is necessary to understand the contents of CNC processing program sheet. There must be 2D or 3D drawings on the program list, and the hexagonal data of “x length, y width and Z height” shall be marked. If there is a plane, it shall be marked with “Z” value. After processing, the operator can easily check whether the data is correct, and the tolerance data shall be indicated if there is tolerance.
5. Ensure that the equipment operates under the temperature and humidity within the specified working range to avoid the influence of external factors on the process accuracy to the greatest extent.

The above is the whole content of the article, hope to help you.

CNC is also called computer gong, cncch or CNC machine tool. In fact, it was introduced into the Pearl River Delta of mainland China. It is actually a CNC milling machine. In Guangzhou, Jiangsu, Zhejiang and Shanghai, a new type of machining technology is called CNC machining center. Its main work is to compile processing programs, that is, to convert the original manual work into computer programming. So let’s take a look at the advantages of CNC machining?

① A large number of tooling is reduced, and complex tooling is not needed to process parts with complex shapes. If you want to change the shape and size of parts, you only need to modify the part processing program, which is suitable for the development and modification of new products.

② The machining quality is stable, the machining precision is high, and the repetition precision is high, which can meet the processing requirements of aircraft.

③ In the case of multi variety and small batch production, the production efficiency is higher, the time of production preparation, machine tool adjustment and process inspection can be reduced, and the cutting time is reduced due to the use of the best cutting amount.

④ It can machine complex surface which is difficult to process by conventional method, and even can process some parts which cannot be observed.

The disadvantage of NC machining is the high cost of machine tools, which requires maintenance personnel to have a high level.

With our processing, is more and more extensive, many products, are to be used for processing, for processing problems, how to solve, how to deal with, CNC machining is the same, then CNC machining parts spherical surface easy to produce shape error elimination method is what?

1. Caused by system gap

In the transmission pair of CNC machining equipment, there is a certain gap between the lead screw and the nut. With the increase of the equipment operation time, the gap is gradually increased due to wear. Therefore, the corresponding gap compensation during the reverse movement is the main factor to overcome the shoulder on the machined surface. The gap measurement usually adopts the dial indicator method, and the error is controlled within 0.01-0.02 mm. It should be pointed out here that the meter base and the meter rod should not be extended too long, because the cantilever is long, the meter base is easy to be forced to move, resulting in inaccurate counting, and the compensation value is not true.

1. Caused by uneven machining allowance of workpiece

Before the design surface of CNC machining parts is realized, whether the machining allowance of the surface to be machined is uniform is also an important reason for whether the forming surface can meet the design requirements, because the uneven machining allowance is easy to cause “remapping” error. Therefore, for the parts with high requirements on surface shape, the machining allowance should be even as much as possible before forming, or the method of machining one more profile to meet the design requirements.

1. Improper tool selection

CNC cutting tools remove materials through the main cutting edge. However, after the arc passes through the quadrant, after the arc is tangent to the cutting edge of the tool pair (the intersection line between the back of the pair and the base plane), the secondary cutting edge may participate in the cutting (i.e. backhoe). Therefore, the wedge angle of the tool must be considered when selecting or grinding the tool.

CNC machining is the CNC machine tool controlled by the computer to process parts and components. The working principle of CNC machine tool is the same as that of a robot. It must be used with the program and in accordance with all the footnotes. So, what are the advantages of CNC processing? Let’s have a simple understanding:

The key goal of CNC machining is to remove the surplus parts of raw materials and make them have proper forms, such as circle, rectangle, etc. in traditional way, these machines are operated by the operators who operate these machines. Large number of jobs require accurate processing, and operators should have sufficient professional strength for careful processing.

In CNC machine tools, the operator’s role is minimized. The operator must only input the instruction program in the computer to load the required equipment into the machine, and the rest of the work is automatically completed by the computer. The computer instructs the machine tool to carry out various processing operations according to the instruction program given by the operator.

The above is the easy part of CNC processing, I hope to help you.

Mechanical equipment will always have some sound when it is in operation. It is very difficult to completely mute it. Although we can not completely control the noise, we can use some methods to generate bottoming noise. Then we will learn how to reduce the noise generated during CNC parts processing?

1. Civilized production: more than 30% of gear transmission noise is caused by burr and bump. It is a passive way to remove burr and bump before gearbox assembly in some precision mechanical parts processing factories.
2. Ensure the accuracy of gear blank: the accuracy of gear hole size is required to be distributed around the middle difference of the deviation value of the hole, which is set at ± 0.003 ~ ± 0.005mm; if the error is out of tolerance and within the design requirements of the hole, it must be classified and transferred to the gear cutting process.
3. Control gear accuracy: the basic requirements of gear accuracy: after practical verification, the gear accuracy must be controlled at the level of gb10995-887 ~ 8, and the linear speed should be higher than 20m / s. The limit deviation of pitch, radial runout tolerance of gear ring and tooth alignment tolerance must be stable and reach the accuracy of grade 7

Piece counting is one of the most basic movements in the die and mold industry, and the piece counting performance of the CNC machine tool is often related to the performance of its internal parts. What are the piecework methods of CNC machining center? Let’s have a brief understanding of the following:

CNC machining center piecework is related to the detailed mechanical system. Some systems are easy to use, and the program only needs to be implemented once, which can be automatically memorized, and then can be modified after configuring the code required by users. Therefore, these piecework methods will improve the work efficiency. Compared with other mold machinery, machining center is a relatively easy-to-use product. It is not only highly automatic, but also has good work efficiency. It is more and more in the way of piecework, which seems to be a tedious process. In such a machine, it can be finished easily, so the machine will be very popular.

Every machine that can play a major role in the industrial production movement is originally a major product to maintain. The most important part of CNC machining center is its programming software, and the appearance of CNC machining center programming software ensures the excellent performance of the machine in the process of operation. CNC machining center piecework is related to the detailed mechanical system. Some systems are easy to use, and the program only needs to be implemented once, which can be automatically memorized, and then can be modified after configuring the code required by users. Therefore, these piecework methods will improve the work efficiency. CNC machining center programming software may have a number of choices, some software is relatively simple, so learning is also very easy, welcomed by users, and in all the mold industry, the use of contrast more often than some brand famous contrast high, of course, about its use will also put forward some good demand for the elite.

The above is the CNC machining center piece work method, I hope to help you