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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

To ensure safety while gradually rationalizing locomotive maintenance

 

A general inspection of vibration diagnosis was carried out on the axlebox bearings of Taifan locomotives, and it was determined that the bearings had a faulty falling wheel pair. The decomposition inspection found that each bearing had problems such as pitting, peeling, and strain. Some of the bearings had serious faults, and others were found Other serious faults in the running gear, such as too small gap between the bearing bushes of the locomotive, the wear of the dust ring on the axle box, and the poor meshing of gears, have prevented many machine breakage accidents.

The top wheel detection of traction motor bearings and axle box bearings of van-type locomotives and the ground diagnosis of spare traction motor bearings have been carried out, and the scope of minor repairs and auxiliary repairs have been carried out, and the main generator bearings and gearboxes with fault forecasts have also been tested. Bearings were tested and diagnosed, and many bearing quality problems were found, which ensured the safe operation of the locomotive and improved the quality of intermediate repair of the locomotive. Conclusion Locomotive bearing fault diagnosis technology is a new technology with strong practicability. After years of promotion, it has been widely used in locomotive systems and achieved good results, which proves its value and significance.

From the successful experience of many locomotive depots, it can be seen that in addition to technical personnel and operators mastering the basic principles of diagnostic technology and accumulating experience, it is also necessary to pay full attention to the management of diagnostic work. The key to the successful application of this new technology. It is recommended to actively and deeply carry out the locomotive bearing diagnosis work, rationally organize and allocate personnel, incorporate the locomotive bearing diagnosis work into the locomotive repair schedule, formulate corresponding maintenance procedures, and gradually rationalize the locomotive maintenance while ensuring safety.

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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