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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

Classification of CNC Machining Occupation Levels

1. Blue-collar layer:   That is, CNC machining operation technicians, proficient in machining and CNC machining process knowledge, proficient in the operation and manual programming of CNC machine tools (attributes: automated machine tools), understand automatic programming and simple maintenance of CNC machine tools (attributes: automated machine tools), such There is a large market demand for personnel, and they are suitable for operating workers of CNC machine tools (attributes: automated machine tools) in the workshop, but due to their single knowledge, their wages will not be much higher.   2. Gray collar layer:   One, CNC machining programmer:   Master the knowledge of 5 Axis CNC machining Aluminum   technology and the operation of CNC machine tools (attributes: automated machine tools), be familiar with the design and manufacturing expertise of complex molds (title: mother of industry), and be proficient in 3D CAD/CAM software, such as UG, GOOGLE PRO/E, etc. ; Familiar with CNC

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

Process Analysis of CNC Machining Parts Drawing

Process Analysis of CNC Machining Parts Drawing

 

(1) The method of dimensioning in the drawings of CNC machining parts

 

The size on the part drawing is an important basis for manufacturing and inspecting parts. In the production (Produce), the size of the part drawing is required to be free of any errors. CNC machining General CNC machining usually refers to computer digital control precision machining, CNC machining lathe, CNC machining milling machine, laser cutting china, 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 addition to correct, complete, and clear requirements for marking the size on the part drawing, rationality should also be considered. It should not only meet the design requirements, but also facilitate processing and measurement. ? Regarding dimensioning, it mainly includes functional dimensions, non-functional dimensions, nominal dimensions, basic dimensions, reference dimensions, repeat dimensions, and so on. The dimensions marked on the part drawing are complete and correct, making it easy for the processor to analyze, measure, and process. According to these dimensional accuracy (accuracy), the blank is determined to be Φ95*250mm and the material is 45 steel.

 

(2), analyze (Analyse) the geometric elements of the contour of the CNC machining aluminum parts

 

The contour of the part is mainly composed of cylindrical surface, spherical surface, groove (gōucáo), keyway, inner hole and so on. CNC machining is a process method for parts processing on CNC machine tools. The process regulations of CNC machine tool processing and traditional machine tool processing are generally the same, but significant changes have also taken place. A machining method that uses digital information to control the displacement of parts and tools. It is an effective way to solve the problems of variable parts, small batches, complex shapes, and high precision, and to achieve high-efficiency and automated processing.

 

(3) Analyse the structure and craftsmanship of CNC machining parts

 

The part is a slender shaft. The slender shaft has the characteristics of small diameter and too long length. The length of the suspension body is too long when processed, and it is easy to vibrate the knife or the surface roughness value of the processing is too low, so it must be used for processing. Auxiliary tool holder and auxiliary fixture. CNC machining General CNC machining usually refers to computer digital control precision machining, CNC machining lathe, CNC machining milling machine, metal forging 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. There is also something to pay attention to during heat treatment, because it will deform after being hardened by cold work, resulting in a bowing or S-shape.

 

(4) Analyse the precision (precision) and technical requirements of CNC machining parts

 

The precision (precision) and various technical requirements of this part are complete and reasonable

The CNC machining precision (precision) in this process is required to be high. This requirement can be met in the CNC machine tool (attribute: automated machine tool). The machining is divided into three types: rough machining, semi-finishing and finishing. The procedure is carried out.

. The left end of the outer circle size of Φ90 in the figure has higher position accuracy (precision) requirements. All procedures in this section should be completed in one clamping process, except for the keyway.

. For surfaces that require high surface roughness, the circumferential constant linear speed should be used for cutting.

Copyright notice: This article comes from https://be-cu.com/

 

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