Testing device for bearing dynamic characteristic parameters

A technology of parameter testing and dynamic characteristics, applied in the direction of mechanical bearing testing, etc., to achieve the effect of reducing complexity, simple operation, and easy and accurate acquisition

Inactive Publication Date: 2013-05-15
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Looking at the previous bearing parameter testing devices, most of them tend to measure the parameters of the bearing under a single factor, and the test object is usually only for a single bearing. In order to obtain the dynamic characteristic parameters of the bearing under dif

Method used

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  • Testing device for bearing dynamic characteristic parameters
  • Testing device for bearing dynamic characteristic parameters
  • Testing device for bearing dynamic characteristic parameters

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Experimental program
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Effect test

Embodiment 1

[0026] Bearing dynamic characteristic parameter test device, including test device and instrument equipment system. The test device includes a cast iron platform 1, a mounting base plate 2, a lower bearing seat 3, an upper bearing seat 4, a bearing sleeve 5, a pre-tightening nut 6, a pre-tightening bolt table 7, a pre-tightening screw rod 8, an elastic rope 10, and a rubber spring 22 , support 12, mandrel 13, loading screw rod 15, loading rod 16, radial loading frame 17, axial bolt platform 18, feather key 19, shaft end nut 20, bearing 21, transfer rod 23; Described instrument equipment system comprises Vibrator 9, impedance head 11, piezoelectric acceleration sensor 14, static force sensor 24, signal conditioner 25, data collector 26, power amplifier 27, electronic computer 28, digital display instrument 29.

[0027]The installation base plate 2 is fixed on the cast iron platform 1 with 12 M20 bolts to form the test base platform. On the foundation platform, install a pair o...

Embodiment 2

[0077] Bearing dynamic characteristic parameter test device, including test device and instrument equipment system. The test device includes a cast iron platform 1, a mounting base plate 2, a lower bearing seat 3, an upper bearing seat 4, a bearing sleeve 5, a pre-tightening nut 6, a pre-tightening bolt table 7, a pre-tightening screw rod 8, an elastic rope 10, and a rubber spring 22 , support 12, mandrel 13, loading screw rod 15, loading rod 16, radial loading frame 17, axial bolt platform 18, feather key 19, shaft end nut 20, bearing 21, transfer rod 23; Described instrument equipment system comprises Vibrator 9, impedance head 11, piezoelectric acceleration sensor 14, static force sensor 24, signal conditioner 25, data collector 26, power amplifier 27, electronic computer 28, digital display instrument 29.

[0078] The installation base plate 2 is fixed on the cast iron platform 1 with 12 M20 bolts to form the test base platform. On the foundation platform, install a pair ...

Embodiment 3

[0082] Bearing dynamic characteristic parameter test device, including test device and instrument equipment system. The test device includes a cast iron platform 1, a mounting base plate 2, a lower bearing seat 3, an upper bearing seat 4, a bearing sleeve 5, a pre-tightening nut 6, a pre-tightening bolt table 7, a pre-tightening screw rod 8, an elastic rope 10, and a rubber spring 22 , support 12, mandrel 13, loading screw rod 15, loading rod 16, radial loading frame 17, axial bolt platform 18, feather key 19, shaft end nut 20, bearing 21, transfer rod 23; Described instrument equipment system comprises Vibrator 9, impedance head 11, piezoelectric acceleration sensor 14, static force sensor 24, signal conditioner 25, data collector 26, power amplifier 27, electronic computer 28, digital display instrument 29.

[0083]The installation base plate 2 is fixed on the cast iron platform 1 with 12 M20 bolts to form the test base platform. On the foundation platform, install a pair o...

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Abstract

The invention discloses a testing device for bearing dynamic characteristic parameters. The testing device for the bearing dynamic characteristic parameters is composed of an instrument and equipment system, and a testing device. The instrument and equipment system comprises a data collector, a signal conditioning instrument, a power amplifier, a digital indicator, a vibration exciter, an impedance head, a piezoelectricity accelerating speed sensor, and an electronic computer. The testing device comprises an iron cast platform, a mounting base plate, a bearing seat, a bearing sleeve, a bearing, a mandrel, a shaft end nut, a pre-tightening nut, a rubber spring, an axial loading device, a radial loading device, a pre-tightening device, a bracket, an elastic rope and the like. The testing device for the bearing dynamic characteristic parameters is compact in structure and clear in test principle, the loading devices are infinitely adjustable, and the testing devices can measure the bearing dynamic characteristic parameters under load condition of different axial force, radial force, pre-loading force and the like. When measurement is conducted, vibration force direction penetrates through mandrel axis to measure vibration signals of an inner ring and an outer ring of the bearing at same time, affect from vibration signals of the bearing outer ring is eliminated when a displacement frequency response function is calculated, and the testing method is high in efficiency, precision, and stability.

Description

technical field [0001] The invention relates to a testing device for dynamic characteristic parameters of a bearing, in particular to a testing device for dynamic characteristic parameters capable of testing angular contact ball bearings under different working conditions and loads. Background technique [0002] There are a large number of mechanical joint surfaces in the mechanical structure, and the contact stiffness and damping of these joint surfaces have an important influence on the performance of the mechanical structure. 60-80% of the total rigidity of the machine tool. [0003] The dynamic characteristics of bearings essentially refer to the contact stiffness between the rolling contact surfaces between the inner and outer rings of the bearing and the rolling elements, and are an important factor affecting the dynamic characteristics of machine tools. Bearing is a kind of mechanical supporting device which is widely used. At present, the bearings used in high-speed...

Claims

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Application Information

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IPC IPC(8): G01M13/04
Inventor 胡小秋芮红锋王连宝周乐吴玲丽杨国维
Owner NANJING UNIV OF SCI & TECH
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