Search This Blog

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

Quasi-dry machining applications for gear machining

Quasi-dry machining is a new type of machining method that replaces traditional lubrication and cooling methods with micro-lubrication. It has been applied in some enterprises. Under quasi-dry cutting conditions, the cutting process is different from traditional wet cutting. For example, the feed speed, cutting depth and cutting speed are different from traditional cutting, which is mainly manifested in the cutting tool cutting edge generally adopting negative chamfering to protect the cutting edge. ; The cutting principle involves a wider range of factors. At present, the theoretical basis of quasi-dry cutting is far less mature than the traditional metal cutting theory, and it is difficult to use a theory to analyze the processing mechanism of quasi-dry cutting. …

Gear hobbing has a certain particularity to its cutting motion, but it has something in common with regard to dry cutting processing theory and cutting mechanism. Its cutting theories include: green cutting theory, metal softening theory during cutting, low temperature brittleness and improved cutting cooling. The specific content includes: (1) Theoretical analysis of the cutting force when the cutting tool edge is worn and when it is not worn; (2) The cause of the serrated chip; (3) The effect of metal softening; (4) The roughness quality of the machined surface ; (5) MQL cooling and lubricating effect. Surrounding these theories and specific content can guide us to better apply quasi-dry machining to gear hobbing, so as to achieve good machining results, longer cutting tool life, and a clean machining environment.


In order to achieve a good machining effect, the general idea of ​​using quasi-dry cutting for gear hobbing is to increase the cutting speed, shorten the contact time between the cutting tool and the workpiece, and allow the chips to take away a lot of cutting heat; supplemented by low-temperature cold air And micro lubrication technology. Adopting this kind of thinking is mainly based on the fact that most of the cutting energy will be converted into heat energy, and it is expected that the heat will be quickly taken away by the chips, and the heat conducted to the cutting tool and the workpiece will be minimized as much as possible. In this way, it is beneficial to extend the life of the cutting tool and reduce the thermal expansion of the workpiece. During high-speed gear hobbing, even under ideal conditions, a small amount of cutting heat is absorbed by the cutting tool. In current applications, the cutting heat of the cutting tool is cooled by compressed air, and the heat dissipation effect is obvious. If it is combined with low-temperature cold air, Will achieve better processing results.

Link to this article:Quasi-dry machining applications for gear machining

Reprint Statement: If there are no special instructions, all articles on this site are original. Please indicate the source for reprinting.:Cnc Machining,Thank

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