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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 rapid development of the domestic automobile industry has driven the lubricant market

 

As the rapid development of the domestic automobile industry has driven the rapid growth of the lubricant market, from the perspective of the product structure of the production plant, it mainly produces three oil series of internal combustion engine oil, hydraulic oil and gear oil, and its output accounts for the total output. This also reflects the current consumption structure of lubricants in China. From the quality point of view, although the proportion of medium and high-end lubricants in China has been steadily increasing in recent years, the proportion of medium and high-grade products in finished lubricants is basically, but the proportion is still far from that of developed countries. Demand forecast The lubricating oil market is closely related to the demand for oil in industries such as automobiles, machinery, and transportation. The entire machinery industry accounts for a quarter of the national industrial output value. The development and progress of the machinery industry is accelerating, requiring high-grade lubricants that meet the requirements of high mechanical load, long life, low fuel consumption, energy saving and environmental protection.

According to the development plan of the relevant department, combined with the investigation of the department’s oil equipment, the domestic demand for lubricants. The development of lubricants in China High-quality base oils are the basis for the production of high-end lubricants. The base oils are mainly vacuum wax oil, catalytic wax oil, hydrogenation tail oil and other widely used distillate oils. These distillate oils can be used as lubricating base oils, as well as high-quality catalytic feeds, reforming materials and ethylene raw materials. . Most domestic lubricants are produced in large refineries, and their base oil supply is optimized to provide the most reasonable fractions after optimizing the crude oil processing process. However, a considerable number of lubricant manufacturers rely on outsourced base oil production. Because refineries will not specifically optimize the process for them, it is difficult for such lubricant plants to purchase high-quality base oil raw materials. This is also China’s low-grade lubricants. One of the main reasons at present.

Crude oil is a low-pour-point naphthenic crude oil with low sulfur and low wax content. The lubricating oil produced has a low viscosity index. It has the characteristics of heavy distillate, high density, high viscosity, low freezing point, etc. It is the best raw material for the production of some special lubricants. The low freezing point naphthenic lubricants produced with it can be used as electrical oils and refrigeration oils. , Rubber industry oil, cylinder oil and lubricating grease, etc. The lubricating base oil of crude oil not only has a higher yield than paraffin-based base oil, but also has a shorter process, resulting in lower production costs than paraffin-based base oils. The raw material of lubricating oil base oil produced by crude oil is not only of good quality, but also of low cost, which has strong market competitiveness. China's oil resources are becoming increasingly scarce. How to use resources reasonably and effectively based on the quality of China's crude oil is a problem worthy of study and optimization.

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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