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A fixed involute spline pair fretting wear test device

An involute spline, fretting wear technology, used in measuring devices, testing wear resistance, testing mechanical parts, etc.

Active Publication Date: 2020-07-10
XIANGTAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Because the material used to process involute splines generally has a relatively high hardness, the general spline wear test is performed for a long cycle and a long time. Misalignment and slight axial movement are unavoidable during the test, so a fixed type is disclosed. Involute spline pair fretting wear test device

Method used

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  • A fixed involute spline pair fretting wear test device
  • A fixed involute spline pair fretting wear test device
  • A fixed involute spline pair fretting wear test device

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Embodiment Construction

[0022] Such as figure 1 As shown, a fixed involute spline pair fretting wear test device specifically includes a base (2), a drive unit, a unit under test, a support device, a loader (16), a measurement unit and a counterweight adjustment unit; The driving unit is composed of a variable frequency motor (1) and a shaft coupling (6); the measured unit includes a shaft coupling I (4) with an external spline, an internal spline sleeve I (7), an external spline Key shaft (9), inner spline shaft sleeve II (13) and shaft coupling II (15) with outer splines; the measuring unit includes torque speed sensor (3), laser displacement sensor (5), data acquisition device (11) and computer (12); the support device includes a hole retaining ring (8), spherical roller bearings (10), and a support frame (14); the counterweight adjustment unit includes a double-ended stud ( 17), counterweight (18), nuts (19) and gaskets (20); the studs (17) are screwed into the inner spline sleeves I (7) and II ...

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Abstract

The invention discloses a device for testing the fretting wear of a fixed-type involute spline pair, and the device specifically comprises a pedestal, a drive unit, a tested unit, a support device, aloading device, a measuring unit, and a weight adjustment unit. The drive unit consists of a variable frequency motor and a shaft coupler. The tested unit comprises a shaft coupler I with an externalspline, an internal spline shaft sleeve I, an external spline shaft, an internal spline shaft sleeve II, and a shaft coupler II with an external spline. The spline pair in the tested unit is driven bythe variable frequency motor to rotate, and applies the torque through the loading device. In the rotating process, the tested unit is supported by the support device, and a laser displacement sensorin the measuring unit measures a non-centering quantity of the spline pair, wherein the non-centering quantity can be adjusted through the weight adjustment unit. The device can measure the frettingwear of two or more groups of floating-type involute spline pairs at the same time, and can truly simulate the wear conditions of the spline pair in a fixed state.

Description

technical field [0001] The invention relates to a fixed involute spline pair fretting wear test device, which belongs to the technical field of fretting tribology in mechanical engineering. Background technique [0002] The involute spline pair is composed of inner and outer splines. The involute spline pair has the characteristics of good neutrality. In theory, the inner and outer spline shafts are completely centered, and the teeth of the spline pair are evenly loaded, but In fact, due to the influence of factors such as manufacturing errors, assembly errors, and overturning moments, the inner and outer spline shafts are misaligned. For the spline pair, the existence of misalignment will lead to uneven stress on each key tooth, and the local key teeth bear huge loads, so that the key teeth bear periodic alternating loads during the rotation of the spline shaft, while the internal and external splines The contact tooth surface will produce a large relative slip, which will...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M13/025G01N3/56
CPCG01M13/025G01N3/56G01N2203/005
Inventor 姜胜强何明学蒋理宽谭援强杨世平
Owner XIANGTAN UNIV