Search This Blog

Working principle of slow wire processing

by
 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
Image

Hydrostatic guideway of CNC machining lathe

by
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

by
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,
Image
Menu

Various parts of precision CNC machining

cncmachining June 29, 2021


1. Parts with high precision requirements

 

The precision requirements of precision CNC machining parts mainly refer to the precision requirements of size, shape, position and surface, and the surface precision mainly refers to the surface roughness. Because the CNC lathe has good rigidity, high precision in manufacturing and tool setting, and can easily and accurately perform manual compensation and automatic compensation, it can process shaft parts with high dimensional accuracy. In some cases, it can achieve the effect of turning instead of grinding. In addition, because the motion of the CNC lathe is realized by high-precision interpolation and servo drive, it can process parts with high shape accuracy requirements such as straightness, roundness, and cylindricity.

 

Because the CNC lathe can complete a lot of processing content in one clamping, it can effectively improve the position accuracy of the parts, and the processing quality is stable. The CNC lathe has the function of cutting at constant linear speed, so it can not only cnc machine parts with small and uniform surface roughness, but also suitable for turning parts with different surface roughness requirements. Generally, the machining accuracy of CNC lathes can reach 0.001mm, and the surface roughness Ra can reach 0.16μm (precision CNC lathes can reach 0.02μm).

 

2. Parts with small surface roughness values

 

The precision CNC machining numerical control lathe has a constant linear speed cutting function, which can machine parts with small and uniform surface roughness values. The problem is that the surface roughness depends on the feed rate and cutting speed when the material, the finishing allowance and the tool have been determined. The cutting speed changes, resulting in inconsistent surface roughness after turning. Using the constant line cutting function of the CNC lathe, you can choose the best line speed to cut cones, spheres and end faces, so that the surface roughness values ​​after turning are small and consistent. .

 

3. Parts with complex surface contour shapes

 

Because the precision  titanium machining CNC lathe has linear and circular interpolation functions (some CNC lathes also have some non-arc curve interpolation functions), it can turn complex shapes composed of arbitrary straight lines and various flat curves. Body parts, including list curves that cannot be described by equations that are processed by fitting calculations. As shown in Figure 4-1, the molding surface of the closed cavity of the shell part cannot be machined on an ordinary lathe, but it can be easily machined on a CNC lathe.

 

Copyright notice: This article comes from  https://lasercutting.top/

Please keep the source and address of this article for reprinting: https://lasercutting.top/various-parts-of-precision-cnc-machining/


Facebook Twitter Whatsapp
Next
Prev Post
Previous
Next Post

Contact Us

Get In Touch or Get A Quote

Need an expert? you are more than welcomed to
leave your contact info and we will be in touch shortly YOUR COMPANY
Sifangyuan Industrial Park, Xinshapu, Huaide Community
Humen town, Dongguan City, Guangdong Province.  860769-82886112
 860769-82886112
© Copyright 2020 Advance China 5 Axis CNC Machining Shop. Designed by PTJ Shop.