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A Comprehensive Measuring Device for Static and Dynamic Stiffness of Ball Screw

A ball screw and comprehensive measurement technology, which is applied in the direction of machine gear/transmission mechanism testing, etc., can solve the problems of not having a measuring device, etc., and achieve the effect of improving sensitivity, small motion friction, and convenient measurement

Inactive Publication Date: 2016-03-30
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing ball screw stiffness testing devices are limited to the measurement of axial static stiffness, and there are still few measuring devices for torsional and lateral stiffness, especially for the measurement of comprehensive dynamic stiffness. Currently, there is no measuring device with corresponding functions.

Method used

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  • A Comprehensive Measuring Device for Static and Dynamic Stiffness of Ball Screw
  • A Comprehensive Measuring Device for Static and Dynamic Stiffness of Ball Screw
  • A Comprehensive Measuring Device for Static and Dynamic Stiffness of Ball Screw

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Embodiment Construction

[0021] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0022] like figure 1 As shown, the present invention includes a bottom plate 10 , a linear feed mechanism 20 , a torque static and dynamic stiffness measurement mechanism 30 , an axial static and dynamic stiffness measurement mechanism 40 and a transverse static and dynamic stiffness measurement mechanism 50 .

[0023] The linear feed mechanism 20 includes a servo motor 202 fixed on the base plate 10 through a motor support 201, the rotating shaft of the servo motor 202 is connected to one end of a torque sensor 204 through a coupling 203, and the torque sensor 204 passes through a sensor bracket 205 Fixed on the base plate 10, the other end of the torque sensor 204 is connected to one end of a ball screw 207 through a coupling 206, and the ball screw 207 is rotatably supported on two fixed support seats 208, 209, and the two fixed support seats 208, ...

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Abstract

The invention relates to a comprehensive measuring device of static and dynamic rigidity of a ball screw. The comprehensive measuring device comprises a base plate, a linear feeding mechanism, a torque static and dynamic rigidity measuring mechanism, an axial static and dynamic rigidity measuring mechanism and a transverse static and dynamic rigidity measuring mechanism. The linear feeding mechanism comprises a servo motor, a torque sensor, a ball screw and a lead screw nut base. The torque static and dynamic rigidity measuring mechanism comprises two angle plates, two flanges, two circular gratings and two circular grating reading heads. The axial static and dynamic rigidity measuring mechanism comprises an electric cylinder, two connecting plates, two guiding rods, two springs and two tension-compression sensors. The transverse static and dynamic rigidity measuring mechanism comprises a linear guide rail, a sliding block, an electric cylinder, two pressure sensors, two universal balls, a first cardan, a connecting sleeve, a linear bearing, a sliding rod, an elastic box and a linear measuring block. The comprehensive measuring device can be used for torsional, axial and transverse static and dynamic rigidity measuring of the ball screw.

Description

technical field [0001] The invention relates to a measuring device, in particular to a comprehensive measuring device for ball screw static and dynamic stiffness which can be used for measuring the torsional, axial and transverse static and dynamic stiffness of the ball screw. Background technique [0002] As a high-efficiency transmission component that converts rotary motion into linear motion, ball screw has the advantages of high transmission precision, stable and reliable operation, so it is widely used in the feed transmission system of CNC machine tools and has become an indispensable part of CNC machine tools. One of the important functional parts. [0003] When selecting the type of ball screw, many characteristic parameters need to be considered, such as lead, diameter, stiffness, life, etc. Among these factors, stiffness characteristics have a greater impact on the overall operating characteristics of the system, especially at high speeds, This effect is more pro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M13/02
Inventor 王立平姜峣李福华李铁民吴军
Owner TSINGHUA UNIV
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