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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

How to Find the Hole Center with a Meter?

We sometimes encounter some special-shaped workpiece to be processed, the edge of the workpiece is curve, no straight line.

 

In the first process of numerical control processing, this will not have an impact on our processing, but to the back of the process processing, irregular shape will let us in the workpiece points encountered trouble, so that the processing can not be normal down.

Even sometimes due to temporary process changes, the workpiece that has been processed in the first process may be scrapped, which wastes a lot of resources. Therefore, it is a very important part of the process to have a foresight of the process planning.

 

For example, in the workpiece machining in the figure above, because the workpiece is surrounded by curves, the only feature that can be used as the origin of the coordinate of the workpiece is the hole.

 

We want to choose a hole as the origin of the workpiece coordinates, the hole had better be the original existence of the workpiece, so that there will be no additional cost of more processing time; Hole processing is best to use the existing tool, which will reduce the cost of the tool; It is important that the position of the hole be accurate after the first process is completed.

 

After comprehensive consideration, we chose the hole in the lower right corner of the workpiece as the origin of the coordinate of the workpiece.

After the completion of the first processing procedure, due to the shape of the workpiece, we processed a slightly larger clamp in the soft clamp according to the shape of the workpiece, so as to better hold the workpiece. According to the design of the process, we need to find the center of this hole, which can be used as the origin of our workpiece coordinates.

 

The diameter of the machining hole and the requirement of position precision are not suitable for the use of edge finder, so we choose the calibration table to find the center of the hole.

The tools above all serve the same purpose — to find the center of the hole.

 

Although the installation of the calibration meter is different, the basic principle of operation is the same. In the following video, you can learn not only the details of how to do it, but also the good practices that will help you in your work.

Link to this article:How to Find the Hole Center with a Meter?

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