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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

Engine manufacturers’ demand for high-quality base oil will increase

 

The countermeasures of the oil refining industry used to be to improve oil additives. The current method is to improve the quality of the base oil while improving the additives. One is to increase the purity of the base oil, and the other is to increase the viscosity index of the base oil. The specific requirements for the quality of the base oil are: high viscosity index, long life, that is, high oxidation stability, requiring little increase in viscosity during use, less loss of additives, and less precipitation generation; low volatility, that is, high boiling point, low Fuel consumption; lower viscosity at low temperature, that is, better cryogenic pump delivery performance; high shear stability, less dependent on viscosity modifiers.

Since the hydrogenated base oil has better isomerism and saturation, it has better oxidation stability, better thermal stability, higher viscosity index and lower pour point, and has better low temperature Fluidity, with proper blending performance. òClass base oil, because it adopts heterogeneous dewaxing to selectively convert wax into lubricating oil, so that it has good low-temperature performance, and is more suitable for preparing internal combustion engine oil, automobile automatic transmission fluid and hydraulic oil.

In addition to the production of Type II base oils, part of Type ó base oils can also be produced by adopting the full hydrogenation process. Class ó base oil has all the advantages of Class II base oil, and it also has a higher viscosity index and very low volatility. Its low temperature performance is much better than ò Class oil, close to synthetic lubricating oil (poly A-olefin). Engine manufacturers have higher and higher requirements for the quality of future base oils, and the demand for high-quality base oils will increase.

The 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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