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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 bett...

What are the rules for metal stamping die scrap tube?

The Purpose Standardize the management of the scrapping of the company's metal stamping dies, prevent the loss of company assets, and formulate this system specially. Scope of application It is suitable for the management of the company's scrap molds. Definition If the molds listed in the assets of the company fall under one of the following circumstances, the use management department may apply for scrapping. 1. Molds that exceed the specified service life. 2. The mold is severely damaged by accidents or accidents, and molds that cannot be repaired or have no repair value. 3. Metal stamping dies that have not reached the service life, but due to safety, quality, efficiency and other issues, the repair still fails to meet the minimum requirements of the customer's product process or affects the production safety and efficiency. 4. Product customers have stopped placing orders or have not placed orders for molds in several years. 4. Responsibilities 1. Responsibilities of th...

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 stre...

What are the methods for disassembling cnc machining bearings?

Cnc machining is an automated machine tool that can be processed efficiently and has many functions. The bearing is a component processed by cnc, and its main function is to support the rotation of the machine, reduce the friction coefficient during its movement and ensure its reversal accuracy. In this chapter, we mainly describe the methods for disassembling the bearing.

1. Percussion

The time of striking will converge on the inner ring of the CNC machined bearing. This method is relatively simple, but it is easier to harm the bearing. When disassembling, place it on the underground object pad of the bearing, and then tap it with a hammer to remove the bearing.

2. Pull out method

Using a special pull tool, only need to rotate the handle, the cnc machined bearing can be pulled out. In the meantime, it should be noted that the pull tool must be stuck on the end face of the bearing inner ring and the bending angle of the pull tool is less than 90°.

What are the methods for disassembling cnc machining bearings?

3. Push method

This method can be completed with a press, and it is relatively safe for cnc machining of bearings, but it should be noted that the focus of the press should be placed on the center of the shaft.

4. Hot dismantling method

Pour a 100° bearing oil pot on the CNC machined bearing. The principle of thermal expansion and contraction is that the bearing will expand after being heated. At this time, it can be pulled out with a pull tool. Use this method to be smaller and avoid being scalded.

5. Induction heating method

This method is better. Induction current occurs in the cnc machining bearing ring, and then the bearing will heat up and swell, so that we can disassemble the spindle more conveniently.

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