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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

Introduction of KOVAR parts

KOVAR parts are commonly used as metal casing materials in the electronic packaging industry. Because they have a linear expansion coefficient close to that of molybdenum group glass, and can produce less sealing stress during the sealing (melting) process with molybdenum group glass, so To obtain good air-tightness, in order to make the metal tube and shell to achieve air-tight sealing, in the entire sealing process, the annealing process undoubtedly plays an important role as a link between the previous and the next. The internal stress generated during KOVAR  machining also prepares the material structure for the implementation of the subsequent process-the sealing process of the metal parts. The main purpose of annealing Kovar shell before sealing is to: (1) Eliminate machining stress. When Kovar undergoes plastic machining deformation during cold working, about 10% to 15% of the applied energy is converted into internal energy, which is commonly referred to as internal stress,

Use AC oil pump to circulate and flush lubricating oil and speed regulating oil system

Commissioning of the oil system. The oil circulation of the lubricating oil and regulating oil system. After the installation work of the turbine oil system is completed, the main fuel tank of the turbine is thoroughly cleaned, all the throttle orifices on the oil system are removed, and the power oil pipes, Short-circuit the control oil pipe with the oil return pipe, and short the pressure oil pipe of the steam extraction check valve with the oil return pipe. After completing the above temporary measures before flushing, replenish new oil to the main oil tank to the normal oil level. Then start the AC oil pump, and after the trial run is qualified, use the AC oil pump to cyclically flush the lubricating oil and the speed regulating oil system. The circulating flushing of the oil system is carried out in two steps. **Step by pressing the mechanical handle of the manual brake and stop on the machine head side, thereby cutting off the system’s oil supply to the speed control system, that is, the speed control system is isolated, and the AC oil pump is used to circulate the lubricating oil system until the oil The quality has passed the laboratory test. The second step is to install a blocking plate at 517mm of the power oil pressure and lubricating oil pressure distribution throttle orifice to isolate the lubricating oil system, and lift the mechanical handle of the manual brake on the side of the machine head to supply oil to the speed control system. , The oil circuit of the regulating oil system and the steam extraction check valve is cyclically flushed until the oil quality is qualified, and the oil quality* finally reaches the US MOOG four-level standard.

Setting of the oil system safety valve and spill valve After the oil system cycle is flushed, the system is restored to perform the setting of the oil system safety valve and spill valve. First put in the electric heating device of the oil tank to heat the oil temperature to about 40e, then start the AC oil pump, pass the adjustment bolt on the safety valve through the Northeast Electric Technology, set the operating oil pressure value of the oil system safety valve to 2MPa, and then pass it on the oil spill valve. The adjustment bolt of the oil spill valve sets the operating oil pressure value of the spill valve to 118MPa. The adjustment of the lubricating oil pressure and the power oil pressure is through the combined adjustment device of the power oil pressure and the lubricating oil pressure on the top of the oil tank, and the power oil pressure is adjusted to 1165MPa, the lubricating oil The oil pressure of the oil supply pipe is adjusted to 0135MPa, and the power oil pressure and lubricating oil pressure are combined adjustment device. The size of the throttle orifice at the oil inlet of each bearing bush is provided to adjust the oil pressure and oil intake of each bearing bush.

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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