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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

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

Component Parts

Electronic Component Parts

Electronic components Parts are the basic elements in electronic circuits, usually individual packages, and have two or more leads or metal contacts. Electronic components must be connected to each other to form an electronic circuit with specific functions, such as amplifiers, radio receivers, oscillators, etc. One of the common ways to connect electronic components is soldering to printed circuit boards. Electronic components may be individual packages (resistors, capacitorsinductors, transistors, diodes, etc.), or groups of various complexity, such as integrated circuits (operational amplifiers, exclusions, logic gates, etc.).

parts
parts

Component classification
In order to maintain the stability of the operation of electronic components, they are usually covered and packaged with synthetic resin (Resin dispensing) to improve insulation and protection from environmental influences. [1]
Components may be passive or active:
Passive components are electronic components that do not have any gain or directionality when in use. In network analysis, they are called electrical elements.
Active components are a kind of electronic components. Compared with passive components, they have gain or directionality when in use. They include semiconductor devices and vacuum tubes.


Terminals and connectors
Device for circuit connection
Terminal
Connector
(Closed)
Signal socket (Socket)
Terminal Blocks (Screw terminal, Terminal Blocks)
Signal connector (Header)
wire
Wires with connectors or terminals at the end
Power cord
Patch cord
Oscilloscope probe (Test lead)
switch
Electronic components that can control the open or closed circuit of the circuit
Switch-manually operated switch
Keypad- a group of button switches (such as a small keyboard that can only enter numbers)
Relay-A current operated switch. It is an electromagnetic component, which is different from a solid state relay (Solid State Relay).
Electromagnetic switch
Thermostat-temperature-actuated switch
Circuit Break-a switch actuated by overcurrent
Limit Switch-Mechanical start switch
Mercury Switch
Centrifugal Switch
resistance
Resistive electronic components
See the resistance in the "Sensor" paragraph below for environmental detection
See the resistance in the "protective device" paragraph below, used to limit current or voltage
Resistor-fixed resistance value
Resistor Network
Trimmer-small variable resistor
Variable resistance-variable resistance value
Heater-Heating Element
Resistance Wire-A wire made of high-resistance material, similar to a heating element
Thermistor-temperature changes resistance value
Varistor-Varistor
protective device
Protect the passive components of the circuit from excessive voltage or current
Although these components are technically electric wires, resistors, or vacuum tubes, they are listed below according to their purpose.
Active components belong to the execution protection function in the semiconductor category, as follows.
Fuse-over current protection, can only be used once.
Self-resetting fuse (PolySwitch, self-resetting fuse)-over current protection, can be used repeatedly after reset
Metal oxide varistors, surge absorbers (MOV)-overvoltage protection, these are passive components, unlike TVS
Inrush current limiter (Inrush current limiter)-to avoid damage caused by inrush current

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