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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

Classification of CNC Machining Occupation Levels

1. Blue-collar layer:   That is, CNC machining operation technicians, proficient in machining and CNC machining process knowledge, proficient in the operation and manual programming of CNC machine tools (attributes: automated machine tools), understand automatic programming and simple maintenance of CNC machine tools (attributes: automated machine tools), such There is a large market demand for personnel, and they are suitable for operating workers of CNC machine tools (attributes: automated machine tools) in the workshop, but due to their single knowledge, their wages will not be much higher.   2. Gray collar layer:   One, CNC machining programmer:   Master the knowledge of 5 Axis CNC machining Aluminum   technology and the operation of CNC machine tools (attributes: automated machine tools), be familiar with the design and manufacturing expertise of complex molds (title: mother of industry), and be proficient in 3D CAD/CAM software, such as UG, GOOGLE PRO/E, etc. ; Familiar with CNC

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

Sanyo STK6712BMK4

Sanyo STK6712BMK4
#STK6712BMK4 Sanyo STK6712BMK4 New Unipolar Fixed-Current Chopper-Type 4-Phase Stepping Motor Driver, STK6712BMK4 pictures, STK6712BMK4 price, #STK6712BMK4 supplier
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Overview
The STK6712BMK4 is a unipolar fixed-current chopper-type 4-phase stepping motor driver hybrid IC(HIC) which uses a MOSFET power device.The excitation sequence signal is active low.
Applications
.Serial printer, line printer, and laser beam printer(LBP) paper feed and carriage motor drivers.
.PPC scanner and LBP Paper feed drivers
.XY plotter pen drivers
.Industrial robot applications, etc.
Features
.This IC has the features of the STK6712BMK4,plus a simultaneous input prevention circuit that protects the IC from and malfunction of the excitation of the excitation signal.
.Self-exictation design means chopping frequency is determined by motor L and R. Supports chopping at 20 kHZ of higher.
.Very low number of external components requied.
.Wide operating supply voltage range (Vcc1=18 to 42V)
.Exicitation sequence signal is active low, and is TTL level for direct interfacing to the microcomputer and gate array.
.The unipolar design enables use as a driver for hybrid,PW, or VR type stepping motors.
.Supports W1-2 phase operation, with a dual Vref pin.
Maximum supply voltage Vcc 52V
Maximum phase current loh 2.5A
Substrate temperature Tc 105℃
Junction temperature Tj 150℃
Storage temperature Tstg -40 to +125°C


Unipolar Fixed-Current Chopper-Type 4-Phase Stepping Motor Driver

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