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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

Application of DC cooling fan in various fields

Application of DC cooling fan in various fields

 Cooling fans are generally used in printers, fax machines, banner machines, medical equipment, automotive electronics, power equipment, electric vehicle chargers, communication/communication cabinets, frequency converters, transformers, industrial control equipment, stage lighting (light source cooling), new energy ( Cooling fans are required for equipment such as batteries into cabinets), engine cooling, instruments and meters.

  DC cooling fans have a wide range of applications, but cooling fans are generally installed inside the machine. Now, most devices will generate heat after running, and they need cooling fans to dissipate heat. The application of cooling fans in various fields is described in detail below.

Cooling fans are generally used in printers, fax machines, banner machines, medical equipment, automotive electronics, power equipment, electric vehicle chargers, communication/communication cabinets, frequency converters, transformers, industrial control equipment, stage lighting (light source cooling), new energy ( Cooling fans are required for equipment such as batteries into cabinets), engine cooling, instruments and meters.

The following is an example of the application of automobile cooling fans in automobiles

The replacement of automobiles clearly marks the changes of this era, and each generation of changes has higher and higher requirements for heat dissipation. From the initial heat dissipation, to the need to reduce noise while satisfying heat dissipation, and then to develop, not only reduce noise and heat dissipation, but also need to be able to control heat dissipation in real time, that is, to support PWM intelligence fan speed regulation cooling fans.

 

·         During the operation of the car, heat is continuously generated, and the components around the combustion chamber (cylinder liners, cylinder heads, valves, etc.) must be properly cooled. The automobile cooling system is composed of radiator, thermostat, water pump, Communications,cylinder water channel, cylinder head water channel, fan, etc. The radiator is responsible for th,e cooling of circulating water. Its water pipes and heat sinks are mostly made of aluminum materials. The aluminum water pipes are made of flat shape, and the heat sinks are corrugated. The heat dissipation performance should be taken into account. The installation direction is perpendicular to the air activity direction. It is possible to achieve smaller wind resistance and higher cooling efficiency.


The coolant flows inside the radiator core and the air passes outside the radiator core. The hot coolant is cooled by dissipating heat to the air, and the cold air is warmed by receiving heat from the coolant, so the radiator is a heat exchanger. The cooling fan is installed in the radiator to blow away the heat in time to achieve the whole cooling effect.


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