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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

The foundation of the anti-force roller test bench of the automobile is modified

Based on the traditional counter-force roller test bench used to measure cars without anti-lock brake system, it is modified. In order to increase the speed of the roller, the output shaft of the motor is directly connected to the roller shaft, and at the same time, the supporting wheel and the supporting wheel are set. It can be raised and lowered vertically along the guiding device. When pressed, the supporting wheel is driven to rotate by the wheel. After the measurement is completed, the restoring of the supporting wheel is realized by a spring.

Measuring parameters In this measuring device, measuring parameters mainly include four parts: wheel speed v body speed v, braking torque, load W. According to the working principle of ABS, the purpose of ABS is to automatically adjust the braking force of the brake to make the wheel slip rate S It is within the optimal range of 10% to make full use of the peak adhesion coefficient of the road surface and improve the braking effect of the car. Therefore, the wheel slip rate when the car is braking is an indispensable output parameter, but due to the slip rate S It cannot be obtained directly, but can only be obtained by calculating wheel speed and vehicle body speed. In order to obtain the ground braking force and ground adhesion coefficient of the car intuitively, the braking torque of the braking state must be measured; in addition, because the braking force detection technical requirements are based on the percentage of the axle braking force to the axle load, the total mass is different. It is a relatively objective standard for the automobile, therefore, the synchronous measurement of the automobile load is essential.

Adopt the sensor and its arrangement. Although the speed sensor can use a non-contact speed sensor for the body speed, it is costly and technically complicated. In order to reduce the cost of the test bench, the main drum linear speed (motor output speed) is used to approximately replace the body speed within the allowable range of error; The bench only needs to measure the wheel speed. The wheel speed sensor adopts a magnetoelectric sensor. The sensor gear mounted on the wheel shaft rotates with the wheel shaft, and the wheel speed sensor outputs an AC signal. The input amplifier circuit amplifies the AC signal into a rectangle. And send it to the arithmetic circuit after shaping. 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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