Category Archive Machinery industry

For our technicians, it’s very good for us to be familiar with various safety precautions, which can prevent and reduce the problems in this respect. The same is true for machining. What are the safety precautions in Dongguan machining?

(1) Easy to operate, reduce walking back and forth, avoid unnecessary bending, tiptoe action.

(2) The positioning is accurate and reliable, so as to prevent misoperation caused by slight vibration.

(3) The movement direction of the operating parts of the machine tool and the moving direction of the operated parts shall meet the requirements, and there shall be simple symbols.

(4) The necessary interlock mechanism shall be installed to prevent the uncoordinated action of the operating parts and the accidents caused by the uncoordinated operation of many people.

(5) The structure and arrangement position of handle, hand wheel and button shall meet the requirements. The start button shall be installed in the casing or with a guard ring to prevent accidental touch. The hand wheel and handle installed on the shaft rod will rotate along with the shaft to hurt people when feeding automatically, so the automatic release device should be installed.

In the same processing, there will be a variety of principles. For example, our machines will have working principles and operating principles, and our precision hardware processing is the same. So what is the operation principle of precision hardware processing control system?

Generally, CNC computer lathe processing control system can control the machine tool to automatically start and stop, change direction and change speed of the spindle according to the digital program instruction. It can automatically control the feed speed, direction and processing road, stop the processing, select the tool and adjust the cutting amount and walking path according to the tool size, and complete various auxiliary actions required in the processing. When using CNC machine tool to process parts, it only needs to program the part graphics, process parameters and processing steps in the form of digital information, and input them into the machine tool control system, and then turn them into the command signal driving the servo mechanism after the processing of the stop operation, so as to control the harmonious action of all parts of the machine tool and automatically process the parts. When changing the processing object, only need to rewrite the program code, input to the machine tool, can be installed by numerical control instead of human brain and hands of the overall function, control the whole process of processing, manufacturing arbitrary complex parts. When we use machine tools to process parts, CNC computer lathe processing usually needs to stop the various actions of the machine tool, one is to control the sequence of action, the other is to control the displacement of each moving part of the machine tool. When the CNC computer lathe is processed by ordinary machine tools, such operations as start-up, parking, tool moving, reversing, spindle speed changing and cutting fluid switching are all controlled by manual. When automatic machine tool and copying machine tool are used, the processing operation and motion parameters of the above CNC computer lathe are controlled by imitating quantity through the installation of designed cam, profiling and block. Although they can process complex parts, and have certain sensitivity and generality, the machining accuracy of parts is affected by the manufacturing accuracy of cam and profiling, and the process is also affected It took a long time to prepare

报错 笔记

When we are processing, it’s better to operate according to its processing principles. After all, this will not affect our Dongguan machining. So what are the processing principles of Dongguan machining? Let’s talk about it for us!

(1) In order to ensure the machining accuracy, the roughing and finishing should be carried out separately. During rough machining, the cutting amount is large, the cutting force and clamping force on the workpiece are large, the heat generation is more, and the machining surface has obvious work hardening phenomenon. There is a large internal stress in the workpiece. If the rough machining and rough machining are carried out continuously, the precision of the parts after finishing will be lost quickly because of the redistribution of stress. For some parts with high machining accuracy. After rough machining and before finishing, low temperature annealing or aging treatment should be arranged to eliminate internal stress.

(2) Reasonable selection of equipment. Rough machining is mainly to cut off most of the machining allowance and does not require high machining accuracy. Therefore, rough machining should be carried out on machine tools with high power and low precision, while the finishing process requires high-precision machine tools. Rough machining and finish machining are processed on different machine tools, which can not only give full play to the equipment capacity, but also extend the service life of precision machine tools.

(3) In machining process route, heat treatment process is often arranged. The arrangement of heat treatment process is as follows: in order to improve the cutting performance of metal, such as annealing, normalizing, quenching and tempering, it is generally arranged before machining. In order to eliminate internal stress, such as aging treatment, quenching and tempering treatment, it is generally arranged after rough machining and before finishing. In order to improve the mechanical properties of parts, such as carburizing, quenching, tempering, etc., they are generally arranged after machining. If there is large deformation after heat treatment, the final processing procedure must be arranged.

The above is a small series of Dongguan machining processing principle is which some of the analysis, more details please consult the site address.

With the continuous improvement of our science and technology, our various processing technologies, in the industry, are still used more, but if not done well, it will cause a series of problems, CNC processing is the same, so what are the problems caused by improper arrangement of CNC processing technology?

1. CNC machining process is too scattered

The reason for this problem lies in the fear of complexity, simple programming, simplified operation and processing, easy adjustment of tool setting with one tool, and being used to ordinary processing. In this way, the product quality is not easy to guarantee and the production efficiency can not be well developed. Therefore, CNC processing personnel and operators should be fully familiar with the knowledge of CNC machining, try more to master the relevant knowledge, as far as possible to use the method of process concentration for processing, more use, will naturally reflect its advantages. After adopting the centralized process, the unit processing time increases. We arrange two equipment face-to-face to realize the operation of two equipment by one person, which greatly improves the efficiency and ensures the quality.

1. CNC machining sequence is unreasonable

Some CNC processing operators consider some problems in preparation, and often arrange the processing sequence irrationally. NC machining is usually carried out according to the requirements of general machining process planning, such as first coarse and then fine (tool change), first inside and then outside, reasonable selection of cutting parameters, so that the quality and efficiency can be improved.

The above is the problem of improper arrangement of CNC processing technology introduced by Xiaobian. I hope it can help you. If you want to know more about it, you can consult us.

1） It can be expressed in two ways: diameter value programming or radius value programming and radius value programming.

The default programming method of CNC system is diameter value programming. This is because the radial dimension of the processed part is expressed by diameter value when measured on the drawing. Therefore, it is most convenient to use diameter value programming, that is, when programming with absolute value in diameter direction, X is shown as diameter value; When programming with increment value, it is represented by double value of radial actual displacement, and direction symbol is attached (positive direction can be omitted).

（2） Absolute value programming, incremental value programming or mixed programming are adopted. According to the drawing dimensions of machined parts, from the point of view of easy programming, absolute value programming, incremental value programming or mixed programming are adopted in a program segment. When programming in absolute coordinates, they are represented by coordinate words X and Z; when programming by incremental coordinates, they are represented by coordinate words u and W.

（3） Most CNC lathes have the function of tool automatic compensation. By using this function, the tool tip radius compensation, tool wear compensation and position error compensation when installing the tool can be realized. Before CNC precision machining, as long as the operator inputs the relevant compensation value into the specified memory, the CNC system can automatically carry out tool compensation. No matter the change of tool tip radius, tool wear or tool position, there is no need to change the machining program, so the programmer can program according to the actual contour size of the workpiece.

1, the process is the basis of programming. If you don’t know the technology, it can’t be called programming. Therefore, to master the programming technology of CNC machine tools, you must first become a craftsman.

1. Proficient in CNC programming and computer software application.
2. Proficient in CNC machine tools. It takes 2-3 years to study. In this process, we need to learn how to operate the system, fixture installation, part datum alignment, tool presetting, zero point offset setting, tool length compensation, radius compensation, tool and handling handle, cutting tool grinding, part measurement (skilled use of vernier caliper, micrometer card, micrometer, diameter bar gauge), etc.
3. There must be good fixture foundation and measurement technology.
4. Familiar with CNC machine tools. Proficient in the maintenance of CNC machine tools.
5. Cultivate good habits and adapt to the characteristics of CNC processing. In this case, suitable for CNC machining master should be humble, rigorous, calm, serious thinking, orderly and persuasive people.

Computer gongs machining center is a highly automatic multi-functional CNC machine tool with tool magazine and automatic tool changing device. After the workpiece is clamped once in the machining center, it can complete a variety of processes for more than two surfaces, and has a variety of tool change or tool selection functions, so that the production efficiency is greatly improved.

The machining center can be divided into boring and milling and turning according to the machining process, and can be divided into three axis, four axis and five axis machining center according to the number of control axes

Computer gong: CNC machining center

Manufacturing technology of computer gong

Computer gong is a kind of artificial intelligence, which is controlled by computer to complete complex machining. The most complex part of the computer gong is the control system. The computer sends various instructions to control the three-axis servo motors of the machine table to cooperate with each other according to the established route, so as to process various complex processes and ensure high machining accuracy. At present, the most used systems in the market are farnac, Mitsubishi and Siemens, which occupy most of the market In addition, there are systems developed by manufacturers themselves, such as Rhodes in Germany, HAAs in the United States, and so on, which are representatives of independent research and development. But most manufacturers don’t have the energy to develop the system. They are more assembled with the system of nafnac and Mitsubishi. Domestic system manufacturers include Guangzhou CNC, Huazhong CNC, etc., but they are not mature and stable enough. They are rarely used on computer gongs, and are generally used in CNC lathes, CNC milling machines, etc.

The main component of the body is casting, which is also a major factor affecting the accuracy of computer gongs. It can even be said that the quality of casting determines the grade of machine tool and the stability of future use. What are the requirements for casting manufacturing, that is, no deformation and enough rigidity. No deformation refers to the actual processing process after leaving the factory, the accuracy of the machine tool remains good, deformation will affect the accuracy. The rigidity of the machine tool is enough to meet the needs of heavy chip processing. Foreign casting manufacturing is much more mature than domestic casting. Take Taiwan as an example. After being finished, machine castings such as Yongjin and Dali in Taiwan have to undergo aging treatment. Some of them are soaked in sea water for several years. After being exposed to the wind and rain of nature, the performance of castings tends to be stable. After being taken out for processing, the stability of machine tools made in this way is naturally better.

The daily work of computer gong operators should be from the perspective of CNC milling machine. CNC milling machine is to use digital processing instructions to control the machining process of the machine tool. Compared with the copying milling machine, it has several characteristics of CNC milling machine

1. There is no need to make a copy
2. High machining precision. The machining accuracy does not need the skill of workers
3. Through the numerical control instruction, the machining process automation is realized, the downtime is reduced, and the production efficiency of machining is improved.

Specific operation method:

1. Determine the processing route
2. Calculation of tangent point coordinates
3. Write processing program
4. Input processing program