Spring force measuring device applied to engine waveform spring and measuring method thereof

Abstract

The invention discloses a spring force measuring device applied to an engine waveform spring. The measuring device comprises a counter weight block, a standard ring, a chassis, a dial gauge stand and high support legs, wherein the standard ring is mounted on the chassis; the counter weight block passes through the standard ring and is connected with a matching hole formed in the chassis; the dial gauge stand is mounted under the chassis through a screw and a cylindrical pin; a dial gauge is fixed on the dial gauge stand by a dial gauge clamp; the high support legs are fixedly mounted under the chassis. A spring force measuring method comprises the following steps: firstly enabling the lower end of the counter weight block to pass through the standard ring and be connected with the standard ring, placing the counter weight block on the chassis through the matching hole in the chassis, and observing the dial gauge and adjusting a pointer to zero; taking out the standard ring, replacing the standard ring with a waveform spring, repeating the operations, observing change of the dial gauge via the standard ring and the waveform spring under the gravity of the counter weight block, determining whether the change of the dial gauge is within a free height range according to the change magnitude of the dial gauge, and then determining whether the spring force meets a design requirement.

Description

technical field [0001] The invention belongs to the technical field of aero-engine processing, and in particular relates to a spring force measuring device and a measuring method for wave springs of engines. Background technique [0002] Among the many parts of the aero-engine, the design requirement of the wave spring is that the spring is at the free height H 0 , the spring force is within a certain range of values. At present, most of the production sites are roughly estimated by workers, and it is difficult to meet the design requirements, resulting in scrapped parts. [0003] In order to realize the mechanical testing of the wave spring preload; the Chinese patent with the publication number CN103543006A discloses a wave spring preload test device, which includes an outer frame body, and a wave spring clamping device is arranged inside the outer frame body. The top plate and the top plate of the outer frame are connected by a spring scale, and the height of the wave s...

AI Technical Summary

Problems solved by technology

At present, most of the production sites are roughly estimated by workers, and it is difficult to meet the design requirements, resulting in scrapped parts

[0003] In order to realize the mechanical testing of the wave spring preload; the Chinese patent with the publication number CN103543006A discloses a wave spring preload test device, which includes an outer frame body, and a wave spring clamping device is arranged inside the outer frame body. The top plate and the top plate of the outer frame are connected by a spring scale, and the height of the wave spring is measured by setting a preset force on the spring scale to pull the clamping device to clamp, and the corresponding relationship between the height of the wave spring and the preset force is drawn to measure the waveform Whether the spring is qualified; but the structure of the test device is complex and the operation is cumbersome. During the measurement, the operator needs to measure and record the height value while operating, and the operation needs to be operated by experienced personnel; secondly, a caliper is required to measure the height after the spring is compressed. , and record the corresponding relationship between the height of the wave spring after compression and the preset force of the spring balance, and draw the curve of the wave spring preset force. When the amount of change is small, it is troublesome to judge whether the spring force is qualified, and the curve is drawn, and the error is large

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