A kind of processing method of wave spring ring

Abstract

The invention provides a production method for waveform spring coils. The production method includes: setting a workbench and mounting a clamping unit, multiple wave crest forming units and multiple wave trough forming units on the workbench, wherein the wave crest forming units are intersected with the wave trough forming units and jointly enclose a circumference with the clamping unit, and an annular spring coil forming area is formed between wave crest male dies located in the inner ring and wave crest female dies located in the outer ring as well as wave trough male dies; feeding strips and reserving clamping allowance at two ends of the blank; placing the blank in the spring coil forming area and tightly pressing head and tail allowance parts of the blank; the wave crest male dies and the wave trough male dies moving outwards to enable wave crests to bend forming, and the wave crest male dies continuously moving outwards to enable wave crests to bend forming; the wave crest male dies and the wave trough male dies moving outwards simultaneously to enable wave crest and wave trough sections to stretch forming; enabling an opening portion to form. By the arrangement, bending springback amount of the waveform spring coils can be controlled, and accuracy of production quality of the waveform spring coils and stability of the forming technology can be guaranteed.

Description

technical field [0001] The invention belongs to the technical field of spring manufacturing, and in particular relates to a processing method of a wave spring coil. Background technique [0002] The wave spring coil is a special part in the high-pressure cylinder of the supercritical intermediate reheat condensing steam turbine. It is used at the steam inlet of the high-pressure cylinder to cooperate with another part, the piston ring, to form a seal, and it is also suitable for assembly. Where the space is limited and the load is light. Since the wave spring coil is a relatively complex annular sheet with several staggered crests and troughs along the circumferential direction, and there is a 100mm opening at the head and tail joints, when the wave spring coil is subjected to radial loading, the peaks and troughs Radial relative displacement is generated to form deformation energy, and the elastic force of the spring itself makes the fitting play the role of sealing the in...

AI Technical Summary

Problems solved by technology

[0006] To solve the processing quality problems such as the difficulty in forming and processing the existing open-type wave spring coils, and the springback amount and processing accuracy of the spring coils cannot be guaranteed.

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