Search This Blog

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

Calculation of high unit braking energy of vehicle retarder

 

The anti-overspeed performance of the vehicle retarder is reflected by testing the high unit braking energy of the retarder. For the three-part reducer, the unit braking energy of the reducer design is h=0.12 (m/m), and in rainy days or oil-stained wheels, it will be reduced to the level of 0.10 and 0.03 (m/m) respectively. If the unit braking energy of the reducer with the brake beam installed in the new design is guaranteed to be greater than the design value of the reducer, the problem of overspeeding of the dump truck can be completely solved. The test method is to calculate the acceleration of the vehicle through the radar speed curve of the control system, and calculate the unit braking energy high.

Through systematic analysis of the causes of overspeeding and braking noise of the retarder, combined with laboratory and field tests to test the oil-water sensitivity and noise reduction performance of the materials, the composition, organization, structure and hardness of the test materials are constantly changed. And so on, * finally successfully developed the retarder anti-over and noise-reducing brake beam.

The anti-super noise reduction brake beam has low sensitivity to oil and water, and has obvious anti super effect. The unit braking energy is high and fully meets the design requirements, which effectively guarantees the safety of shunting operations.

Compared with ordinary brake rails, the noise reduction efficiency reaches 100%, of which more than 80% can reduce 20dB (decibel), the highest decibels are distributed below the frequency of 2kHz, and there is no sudden change in the decibels from 0 to 10kHz, no more The harsh screaming noise with high sound pressure level greatly improves the noise environment around the marshalling yard, which is beneficial to the physical and mental health of the operators. During a major repair period, there is no need to replace the brake beam, only the segmented composite brake pads need to be replaced, and the total cost is low. Moreover, the splint is light in weight and easy to replace. By adjusting the composition, organization, structure and hardness of the brake splint material, the inner brake splint of the target brake position reducer can be used for 5 to 8 years, and the outer brake splint can be used for 3 to 5 years, which can meet the requirements of use.

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.

Link to this article:Calculation of high unit braking energy of vehicle retarder

Reprint Statement: If there are no special instructions, all articles on this site are original. Please indicate the source for reprinting.:Cnc Machining,Thank

Contact Us


Get In Touch or Get A Quote

Need an expert? you are more than welcomed to
leave your contact info and we will be in touch shortly
YOUR COMPANY
Sifangyuan Industrial Park, Xinshapu, Huaide Community
Humen town, Dongguan City, Guangdong Province. 
860769-82886112
860769-82886112