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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

Internal combustion engine is the main source of power for automobiles and construction machinery

The internal combustion engine is the main source of power for automobiles and construction machinery, and internal combustion engines mainly include gasoline engines and diesel engines. Diesel engines are widely used in trucks due to their own advantages such as high thermal efficiency, wide application range, and fuel economy. In particular, it can meet the needs of construction machinery operating conditions. Therefore, most construction machinery uses diesel engines as their power source. However, if it is improperly used and maintained, it is prone to overheating failure. Internal combustion engines for construction machinery are more prone to overheating failures due to their complex operating conditions and harsh operating environment. If the overheating fault is not eliminated in time, it will be more harmful and easily cause damage to the mechanical parts, increase fuel consumption, and reduce output power. As a repairer, he often encounters the treatment of the overheating failure of the internal combustion engine during the repair process. So how to quickly and accurately find out the cause of overheating faults and eliminate them in time is very important, which is of great significance for giving full play to the economic and dynamic performance of mechanical equipment and improving its service life. The hazards and causes of internal combustion engine overheating failures are very harmful. Long-term overheating can easily cause deformation, melting, jamming, and cylinder pulling of mechanical parts, which will increase fuel consumption and reduce output power. There are many reasons for the overheating of internal combustion engines, such as heavy load operations on ramps, hot summer and desert plateau areas with high ambient temperature, the cooling system is affected and cannot function fully, long-term overload and high-speed operation conditions, etc. . These are caused by the influence of environmental factors in the operation of construction machinery, and can generally be overcome by improving working conditions and reasonable operation. For the overheating of the body caused by the failure of the internal combustion engine, inspection and maintenance are required to restore normal operation. Overheating caused by internal combustion engine failure mainly includes insufficient cooling water in the cooling system and excessive fouling in the cooling water passage around the cylinder liner, thermostat failure, poor radiator performance, abnormal exhaust valve clearance, incorrect valve phase, and ignition timing failure factors, etc. . Therefore, when the internal combustion engine has an overheating fault, it is necessary to scientifically analyze and judge the fault phenomenon and find the cause of the fault in time. 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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