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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

Inspection strategy of tire full-speed anti-breakage testing machine

Standard model and parameters Model and name Maximum test value accuracy/% EHB-100A standard dynamometer 10000kg 0.3 SZG-141B digital speed 10000rmin-10.0222 self-inspection conditions Working temperature 1035, the environment is dry, clean, and vibration-free.

The difference between the load display value of the self-checking equipment load and the actual force applied to the drum is the load error. (1) The installation of the EHB-100A standard dynamometer The standard dynamometer is fixed on the bracket, the dynamometer probe should be located on the plane composed of the rim and the center axis of the drum, and the end with the probe rests on the drum Up, the other end is towards the rim, as shown.

(2) Load test Choose 5 force points for load test on each station. In accordance with our factory’s inspection requirements for finished tires, five force points of 1, 2, 3, 4 and 5t are selected at the 1 and 2 stations. The installation of the EHB-100A standard dynamometer indicates the rim; 2 standard dynamometer ; 3 brackets; 4 drums and 4 stations to choose five force points 0.5, 0.8, 1, 1.5 and 2t. The equipment applies a load from the rim to the standard dynamometer through hydraulic transmission. When the equipment displays the selected afterburner value Xi (i=15), the readings Li of the standard dynamometer are recorded respectively.

(3) Calculation of load error The relative load error i corresponding to each point is calculated according to formula (1): i (%) = Xi-LiLi100 (1) The difference between the speed error of the self-checking device speed display value and the actual linear speed of the drum Is the speed error.

(1) Speed ​​measurement The SZG-141B digital tachometer is portable, so there is no need to install it. When testing, stick the reflective film on the drum and hold the steady tachometer. When measuring the speed, use the tachometer to obtain the standard value of the drum speed Ni first after the drum rotates stably. According to the diameter of the drum, the standard linear velocity value vi of the outer edge of the drum can be calculated as 0.3216Ni. Measuring 1 and 2 stations At the speed, the measured speed vi given by the equipment starts from 50kmh-1, and the speed is increased by 20kmh-1 each time until the speed reaches 150kmh-1, and then the speed is increased to 160kmh-1, and the standard speed Ni of the drum is measured with the tachometer. When measuring the speed at stations 3 and 4, the measured speed vi given by the equipment starts from 80kmh-1, and increases the speed by 20kmh-1 each time until the speed reaches 220kmh-1. At the same time, record the standard rotation speed value corresponding to each speed. The same method can calculate the standard linear velocity at each speed.

(2) Calculation of speed error The relative speed error i corresponding to each point is calculated according to formula (2): i(%)=vi-vivi100=vi-0.3216Ni0.3216Ni100 (2) Processing of self-check results at each point in load detection The absolute value of the corresponding load relative error is less than the load accuracy requirement, then the load test is qualified; the absolute value of the speed relative error corresponding to each point in the speed test is less than the speed accuracy requirement, then the speed test is qualified. If one of the items checked above is unqualified, the equipment is deemed unqualified and must be re-adjusted and tested until all items are qualified.

The 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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