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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

Mitsubishi CM20MD1-12H

Mitsubishi CM20MD1-12H
#CM20MD1-12H Mitsubishi CM20MD1-12H New Three Phase Converter + Three Phase Inverter 20A/600V, CM20MD1-12H pictures, CM20MD1-12H price, #CM20MD1-12H supplier
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Email: sales@shunlongwei.com

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CM20MD1-12H Description

Powerex CI Modules are designed for use in switching applications. Each module consists of a three phase diode converter section and a three phase IGBT inverter section. All components and interconnects are isolated from the heat sinking baseplate, offering simplified system assembly and thermal management.
Features:
.Low Drive Power □ Low VCE(sat)
.Discrete Super-Fast Recovery (70ns) Free-Wheel Diodes
.High Frequency Operation (20-25 kHz)
.Isolated Baseplate for Easy Heat Sinking
Applications:
.AC Motor Control □ Motion/Servo Control
.General Purpose Inverters
.Robotics
Ordering Information:
Example: Select the complete nine digit module part number you desire from the table below - i.e.
CM20MD1-12H is a 600V (VCES), 20 Ampere CI Power Module.
Power Device Junction Temperature Tj -40 to 150 °C
Storage Temperature Tstg -40 to 125 °C
Mounting Torque, M4 Mounting Screws 13 in-lb
Module Weight (Typical)  60 Grams
Isolation Voltage, AC 1 minute, 60Hz VRMS 2500 Volts
Repetitive Peak Reverse Voltage VRRM 800 Volts
Recommended AC Input Voltage Ea 220 Volts
DC Output Current IO 20 Amperes
Surge (Non-repetitive) Forward Current IFSM 300 Amperes
Collector-Emitter Voltage (G-E Short) VCES 600 Volts
Gate-Emitter Voltage (C-E Short) VGES ±20 Volts
Collector Current IC 20 Amperes
Collector Current (Pulse)* ICM 40 Amperes
Emitter Current** IE 20 Amperes
Emitter Current** (Pulse)* IEM 40 Amperes
Maximum Collector Dissipation PC 57 Watts


Three Phase Converter + Three Phase Inverter 20A/600V

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