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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 bett...

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 o...

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 o...

Analysis on the experimental environment and process of automobile simulation

 

The mechanical car simulation test bed was later developed to test the overall product. A gear-chain drive is used to divide the circumference of the drum into six areas at equal distances. Tiles may be placed on each area, and the shape of the tiles is also more complicated. What is placed on the wheel drum is a trailer or a two-axle car.

To simulate vibration correctly, not only does the simulation platform produce a random vibration that is consistent with the actual amplitude distribution, but the acceleration power spectrum density diagram also conforms to the test conditions, which is simply impossible on a simple mechanical simulation platform. By adjusting the rotation speed, the shape and placement of the tiles on the wheel drum, the load on the trailer and other factors, so that the following five indicators are consistent with the actual measurement, it is considered that the field transportation test environment has been moved to the laboratory for simulation. The five indicators are:

(1) The average value (mathematical expectation) of the peak (or valley) random variable recorded by the simulation table vibration is equivalent to the actual measurement.

(2) The first moment (variance) test of the peak value is equivalent to the actual measurement. (1) and (2) Two, indicating that the peak random variable of the analog station is in the same distribution as the actual measurement.

(3) The main frequency range on the acceleration power spectrum, the test is equivalent to the actual measurement.

(4) The power spectral density value at the main frequency) G1 (f) and G2 (f), the test is equivalent to the actual measurement. (3) and (4) Two, indicating that the energy concentration in the main frequency range is consistent.

(5) The root mean square acceleration value of the acceleration time history, the test is equivalent to the actual measurement. This indicates that the total power given to the test piece by the simulation platform is consistent with the actual measurement.

Due to the lack of proper mathematical description between the above five indicators and the debugging parameters, there is a lot of blindness in the process of debugging and the workload is heavy. It often happens that this indicator is met, but another indicator is not met.

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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