A high-quality and high-efficiency grinding method for springs

Abstract

The invention relates to the field of spring grinding, in particular to a high-quality and efficient spring grinding method. The method includes: at least one of an upper grinding wheel and a lower grinding wheel comprises an inner grinding wheel and an outer grinding wheel, wherein the inner grinding wheel sleeves the outer grinding wheel, the inner grinding wheel and the outer grinding wheel are driven through a transmission mechanism, and the rotation directions of the inner grinding wheel and the outer grinding wheel are opposite; when the whole spring is fed between the upper grinding wheel and the lower grinding wheel, the whole spring reciprocates on a grinding wheel plane; the upper grinding wheel moves downwards, the two end faces of the spring are ground by the grinding wheels, and the upper grinding wheel stops moving downwardly when the spring grinding height meets the requirement and returns to the starting point later on; the whole spring then stops moving and is moved out of the two grinding wheels, namely the whole spring is discharged. By the method, the spring is ground under self-rotation, and the quality and yield of ground springs can be increased energy saving, environmental protection and low grinding cost, simple structure, low part manufacturing cost, long mechanism precision retaining ability and good stability are achieved.

Description

technical field [0001] The invention relates to the field of spring grinding, in particular to a high-quality and high-efficiency grinding method for springs. Background technique [0002] At present, the schematic diagram of the basic mechanism of the double-end surface spring grinding machine of the CNC spring grinding machine is as follows figure 1 , figure 2 , this structure is the upper grinding wheel 01, the lower grinding wheel 02, the upper grinding wheel 01 can move up and down, the grinding disc 03 with the spring 04 placed between the end faces of the two grinding wheels, the grinding disc 03 rotates on a fixed axis, the basic working principle is: the grinding disc 03 rotates on a fixed axis, the grinding disc The spring 04 on 03 is driven by the rotation of the grinding disc 03, enters between the end faces of the two grinding wheels from point a, passes through point b to point c, and comes out from between the end faces of the two grinding wheels, the spring...

AI Technical Summary

Problems solved by technology

Therefore, this produces three consequences: 1), only about 17% of the whole plate spring is ground on the grinding wheel plane at the same time, and the production efficiency is low

2) The grinding amount of each spring is only 17% of the downward movement of the grinding wheel on one rotation of the grinding disc, and there is still 83% of the moving amount. The spring is actually outside the grinding wheel and has not been ground, which is unreasonable. An unreasonable consequence is that because of the sudden grinding amount at point a of the grinding wheel is large, point a wears quickly, point b wears slowly, and point c basically does not participate in grinding

Therefore, the final shape of the end face of the grinding wheel becomes a truncated cone, such as image 3 , which seriously affects the vertical accuracy of spring grinding

3) Because when the two grinding wheels are grinding, only the position that coincides with the grinding disc is stressed, and the grinding amount at point a of the grinding wheel is large, that is, the main grinding force is at this place, and the axial component of the above-mentioned grinding force is combined. Therefore, the grinding wheel shaft and the grinding wheel disc have to bear a large bending moment, resulting in a large geometric deformation, which is more obvious for heavy grinding springs, which seriously affects the spring grinding accuracy

[0005] Second, due to the unevenness of the grinding wheel during grinding, the end face of the spring is actually a plane that is not perpendicular to the axis of the spring, so the spring cannot rotate during the entire grinding process from point a to point c, so the precision of the spring after grinding is not high

This is not only difficult to find such a mechanic, but also very troublesome to adjust the interference of the bearing

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