Part diameter on-line control method of precise cylindrical grinding machine

Abstract

The invention belongs to mechanical methods, in particular to a part diameter on-line control method of a precise cylindrical grinding machine. The part diameter on-line control method is characterized in that a diameter measuring probe is adopted to measure part diameter on line, a part is provided with a rotation driving swinging head, a proximity sensitive switch is arranged near a swinging head output shaft used for driving the part to rotate, the proximity sensitive switch generates a pulse signal to output when the swinging head rotates by one circle, the part diameter on-line control system calculates the rotational speed of the part according to the pulse signal of the proximity sensitive switch, and calculates feed rate of a grinding wheel according to part diameter reduction speed detected by the measuring probe, a diameter measurement deviation caused by a helix line on the surface of the part is obtained by consolidation, a feed stopping signal is sent to the control system of the precise cylindrical grinding machine when reading of the measuring probe is reduced to the value of the diameter measurement deviation obtained by consolidation, feeding motion of the grinding wheel is stopped, the measuring probe is controlled to retract to an original position, and the helix line remained on the surface of the part is eliminated by using a polishing process. The scheme is simple, convenient, feasible, scientific and reasonable, and the precision in part diameter control is high.

Description

technical field [0001] The invention belongs to the category of mechanical methods, in particular to an on-line control method for part diameters of precision cylindrical grinders. Background technique [0002] Circular shaft parts are an important part of the field of mechanical equipment. In the precision machining stage, circular shaft parts generally use precision cylindrical grinders to obtain good surface quality and dimensional accuracy. In order to suppress the impact of non-ideal factors such as grinding wheel loss, thermal expansion and contraction of the bed, and feed deviation on the diameter accuracy of the part, an online measuring device is generally used in precision cylindrical grinding machines to control the diameter parameters of the part, that is, through the incremental feed process Continuously detect the diameter parameters of the parts. Once the detected instantaneous value of the part diameter enters the set range, the online measuring device will s...

AI Technical Summary

Problems solved by technology

This causes a deviation between the instantaneous diameter of the part detected by the traditional line measuring device and the part diameter corresponding to the actual feeding position of the grinding wheel. This deviation is not only related to the feeding speed of the grinding wheel, but also affected by the rotation speed of the part

The feed speed of the grinding wheel and the rotation speed of the part are the key process parameters of the precision cylindrical grinding machine, and often need to be adjusted according to the specific processing requirements of the part, so that the deviation between the detected value of the part diameter and the actual value changes. Calibration of part diameter accuracy in circular grinding machines introduces uncertain factors and increases the probability of scrap

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