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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

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

Elimination of Gear Backlash in CNC Machining Feed System

Elimination of Gear Backlash in CNC Machining Feed System   The transmission gear in the feed system of the CNC machining machine tool must eliminate the transmission gap between the meshing gears as much as possible, otherwise the motion will lag behind the command signal after each reversal of the feed system, which will affect the machining accuracy (accuracy) ). There are the following two common methods for CNC machining machine tools to eliminate the transmission gear gap.   1. Rigidity adjustment method   The rigid adjustment method is an adjustment method that cannot be automatically compensated for the tooth side clearance after adjustment. Therefore, the pitch tolerance and tooth thickness of the gear must be strictly controlled, otherwise the flexibility of the transmission will be affected. This adjustment method has a relatively simple structure and a better transmission rigidity.   (1) Eccentric shaft adjustment method   As shown in Figure 610, the gear 1 is mounted on th

The impact of exchange rates on auto parts

One type is accounting foreign exchange, which is mainly for the barter trade between the governments of the Soviet Union and Eastern Europe. There are also some barter agreements between the foreign trade department of the representative country and certain manufacturers in Western countries, such as imports in the 1960s and 1970s. Italy Fiat 650E, Algeria, Morocco re-exported Pele series cars, etc. Since the 1970s, barter trade with Eastern European countries has used the Swiss franc, the legal currency of a neutral country, Switzerland, as the currency unit for both parties. Government trade delegations conduct annual trade negotiations to determine the total amount of bilateral trade and balance the supply and demand orders. After signing the agreement, each will organize production and delivery as planned.

As far as automobiles and auto parts are concerned, within the scope of the exchange amount negotiated by the two governments, the Ministry of Materials will allocate the indicators and review the goods orders, and the China National Machinery Import and Export Corporation will be responsible for foreign trade matters. This part of the order has a certain amount of subsidies in the exchange rate, and it is not settled completely at the exchange rate of the listed price. Customs tariffs also have exchange rate subsidies, so they are relatively more favorable than auto parts imported from free foreign exchange. After the adjustment of the RMB exchange rate, the state’s subsidies may be cancelled. The exchange rate subsidies for customs tariffs are also reduced according to the current exchange rate. Therefore, it is expected that the newly settled Eastern European imported auto parts prices will increase significantly. The influence of domestic car users is great. It is foreseeable that the demand for imported repair parts will be suppressed, and more users will turn to domestically-made replacement parts. Of course, this will promote the development of domestically-made parts. Relevant departments should take advantage of the situation and promote the planned launch of national replacement products. . For automotive parts and parts machining, PTJ Shop offers the highest degree of OEM service with a basis of 10+ years experience serving the automotive industry. Our automotive precision shop and experts deliver confidence. We have perfected the art of producing large component volumes with complete JIT reliability, backed by the quality and long-term reliability our customers expect.

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