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Working principle of slow wire processing

 Slow wire walking, also called low-speed wire walking, is a kind of CNC machining machine tool that uses continuously moving fine metal wire as an electrode to pulse spark discharge on the workpiece to generate a high temperature of over 6000 degrees, ablate metal and cut into a workpiece. The principle of wire processing is the phenomenon that there is a gap between the wire electrode and the workpiece, and the metal is removed by continuous discharge. Since the slow-moving wire cutting machine adopts the method of wire electrode continuous feeding, that is, the wire electrode is processed during the movement, so even if the wire electrode is worn out, it can be continuously supplemented, so it can improve the machining accuracy of the parts and slow the wire. The surface roughness of the workpiece processed by the cutting machine can usually reach Ra=0.8μm and above, and the roundness error, linear error and dimensional error of the slow-moving wire cutting machine are much better t

Hydrostatic guideway of CNC machining lathe

The static pressure slide rail (TTW guide) of the CNC machining lathe transfers the oil with a certain pressure through the throttle to the oil cavity between the sliding surfaces of the slide rail (TTW guide) to form a pressure oil film to float the moving parts , Make the sliding rail (TTW guide) surface in a pure liquid friction state.   CNC machining General CNC machining usually refers to computer digital control precision machining, CNC machining lathe, CNC machining milling machine, CNC machining c17200   beryllium   copper   and milling machine, etc. The feed route of finishing is basically carried out along the part contour sequence. Therefore, the focus of determining the feed route is to determine the feed route of rough machining and idle stroke. In the numerical control processing, the control system issues instructions to make the tool perform various motions that meet the requirements, and the shape and size of the workpiece are expressed in the form of numbers and lette

Introduction of KOVAR parts

KOVAR parts are commonly used as metal casing materials in the electronic packaging industry. Because they have a linear expansion coefficient close to that of molybdenum group glass, and can produce less sealing stress during the sealing (melting) process with molybdenum group glass, so To obtain good air-tightness, in order to make the metal tube and shell to achieve air-tight sealing, in the entire sealing process, the annealing process undoubtedly plays an important role as a link between the previous and the next. The internal stress generated during KOVAR  machining also prepares the material structure for the implementation of the subsequent process-the sealing process of the metal parts. The main purpose of annealing Kovar shell before sealing is to: (1) Eliminate machining stress. When Kovar undergoes plastic machining deformation during cold working, about 10% to 15% of the applied energy is converted into internal energy, which is commonly referred to as internal stress,

What are the selection of positioning datums for precision parts processing?

 The production of nuts, studs, and stainless steel materials is becoming more and more intelligent now. When producing these equipment accessories, choose accurate and high-standard equipment. With the advancement of science and technology, intelligent and automated instruments , The equipment has a very fast speed in the circulation of various fields, which brings challenges and opportunities in a new stage to the development of precision parts. This paper analyzes the market demand and process concept of precision parts, and combines the skills and problems in actual processing (with the scope of clamp work as the limit), and explores the solutions and skills of related problems in precision parts processing in order to improve precision parts. Improve the quality of market supply and demand, and promote the development of a technological and intelligent society.


In actual production, the structure of each part may be very different, which also greatly increases the difficulty of processing. However, if you observe carefully, you can find that the basic geometric composition of parts is nothing more than outer circle, inner hole, plane, thread, tooth surface, curved surface, etc., so as long as the processing of these shapes is mastered, the difficulty of precision parts processing is also Can be greatly reduced.

In the process of precision parts processing, whether the selection of positioning reference is reasonable or not determines the quality of the parts, and it is very important to ensure the dimensional accuracy and mutual position accuracy of the parts, as well as the arrangement of the processing sequence between the surfaces of the parts. Big impact. If the fixture is used to install the workpiece, the choice of positioning datum will also affect the complexity of the fixture structure. Therefore, the choice of positioning datum is a very important process problem in precision parts processing.

Nowadays, mechanized and automated production has been achieved in part of the production process. Then the automated processing system can automatically monitor its operating status, and automatically adjust its parameters when subjected to external interference or internal excitation to achieve the best state and availability. Self-organization ability, so as to greatly improve the efficiency of rough and finishing processing under the premise of ensuring processing accuracy.

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