Method for improving the contact between damping spring and stamping parts in clutch

Abstract

A method for improving the contact between a damping spring and a stamping part in a clutch belongs to the technical field of clutch parts processing. The purpose of the present invention is to improve the method for improving the contact between the damping spring and the stamping part in the clutch by improving the angular position of the damping spring window R of the upper and lower stamping parts of the clutch, so as to ensure that the damping spring can meet the design requirements when the damping spring is compressed. The steps of the invention are: improving the blanking die, setting the improved punching material, and pressing the improved punching material. According to the design requirements, the invention increases the contact end surfaces of the right-angle window at the R corners of the upper and lower stamping parts, so there is no problem of non-contact or contact deviation of the upper and lower corners of the shock absorber spring, thereby ensuring that the clutch design is consistent with the actual situation.

Description

technical field [0001] The invention belongs to the technical field of clutch parts processing. Background technique [0002] Among the clutches of the vehicle, the torsional damper in the driven disc assembly can effectively reduce or improve the vibration and noise of the whole vehicle. Usually, the following card damping spring method is routinely used in the multi-stage damper. After the damping spring 2 is clamped by the disc hub 1 and twisted to a certain angle, the end of the damping spring 2 is in contact with the R angle of the driven disc 3 and the R angle of the damping disc 4, and the damping spring 2 is compressed to ensure the multi-stage vibration damping system. Vibration reduction is effective. [0003] like figure 1 As shown, both the driven disc 3 and the damping disc 4 have the material thickness R angle of the stamping part. When the damping spring 2 is twisted by the angle, the spring end face is in contact with the R angle of the driven disc and the ...

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Problems solved by technology

[0003] like figure 1 As shown, both the driven disk 3 and the damping disk 4 have the material thickness R angle of the stamping part. When the vibration damping spring 2 is twisted by an angle, the end surface of the spring is in contact with the R angle of the driven disk and the R angle of the vibration damping disk 4. There is a gap between the damping spring and the driven disc 3 and the damping disc 4. When the damping spring 2 is assembled, the gap randomly appears and cannot be controlled, resulting in the R angle between the end face of the damping spring 2 and the driven disc 3 and the R angle of the damping disc 4. The contact position changes, the maximum difference is 2°, and the deviation from the design angle is too large, which cannot meet the clutch design and use requirements

That is to say, when the shock absorbing spring is compressed by force, its upper and lower top corners will respectively contact the R angles of the upper and lower stamping parts (the upper stamping part is the shock absorbing disc, and the lower stamping part is the driven disc). The R angle is arc-shaped, so there is a gap of 0.2-0.4 between the shock-absorbing spring and the upper and lower stamping parts, so it is difficult to determine the two corners of the shock-absorbing spring, and many situations may occur (see figure 2 ), such as ① figure 2 In a, the upper corner of the shock absorbing spring is in contact with the upper limit position of the R angle of the upper stamping part, while the lower end surface of the shock absorbing spring is not supported by the lower stamping part, so the lower design deviation of the shock absorbing spring will appear, which does not meet the design requirements;② figure 2 b. The upper and lower ends of the shock absorbing spring are in contact with the middle position of the R angle of the upper and lower stamping parts respectively, but the contact between the end face of the shock absorbing spring and the upper and lower stamping parts is different from the design requirement by 2°, which exceeds the design requirement; ③ figure 2 c. The lower corner of the damping spring is in contact with the lower limit position of the R corner of the lower stamping part, and the upper end surface of the damping spring is not supported by the upper stamping part. In this way, the upper design deviation of the damping spring will appear, which does not meet the design requirements.

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