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Testing device and method for three-dimensional static stiffness loading of machine tool

A loading test device, static stiffness technology, applied in the direction of measuring device, machine/structural component test, elasticity test, etc., can solve the problem that static stiffness loading test has no precedent.

Inactive Publication Date: 2015-06-03
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There is still no precedent for applying parallel mechanism to the static stiffness loading test of machine tools

Method used

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  • Testing device and method for three-dimensional static stiffness loading of machine tool
  • Testing device and method for three-dimensional static stiffness loading of machine tool
  • Testing device and method for three-dimensional static stiffness loading of machine tool

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0072] Embodiment: The three-dimensional static stiffness of a gantry milling machine space is measured by using a machine tool three-dimensional static stiffness loading test device.

[0073] Through the following examples, in conjunction with the accompanying drawings, the structure and use of the three-dimensional static stiffness loading test device of the machine tool will be further described:

[0074] 1. The installation method of the three-dimensional static stiffness loading test device of the machine tool:

[0075] 1) As attached Figure 5 As shown, a suitable loading mandrel 17 is selected according to the type and size of the main shaft of the gantry milling machine to meet the size requirements of the main shaft of the gantry milling machine. The loading mandrel 17 is fixed on the loading mandrel interface device 19 through the loading mandrel interface adjustment mechanism 18 .

[0076] 2) As attached Figure 7 As shown, select a suitable adjustable docking pl...

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Abstract

A testing device for three-dimensional static stiffness loading of a machine tool comprises a parallel loading mechanism, a spindle interface, a force measuring module, a spindle deformation and displacement measuring device, a bench docking platform and a control system. The parallel loading mechanism is fixed on a bench of the machine tool through the bench docking platform, is connected with the spindle of the machine tool through the spindle interface and the force measuring module, and applies load to the spindle of the machine tool. In addition, the spindle deformation and displacement measuring device is also disposed on the bench of the machine tool. Deformation of the stressed spindle of the machine tool is measured by the aid of a high-precision displacement sensor disposed on the spindle deformation and displacement measuring device, and finally three-dimensional static stiffness of the machine tool is obtained. A testing method for three-dimensional static stiffness loading of the machine tool includes six steps. Three-dimensional static load can be applied to the machine tool for testing of three-directional static stiffness loading for the machine tool. The testing device and the testing method have practical value and promising application prospect in the technical field of machine tool performance testing.

Description

(1) Technical field [0001] The invention relates to a machine tool three-dimensional static stiffness loading test device and a test method, which belong to the technical field of machine tool performance experiments and are used for testing the static stiffness in three directions of a machine tool. (2) Background technology [0002] CNC machine tools are the mainstream equipment in the contemporary machinery manufacturing industry. One of the important indicators to characterize the performance of machine tools is the static stiffness of the product. The static stiffness of a machine tool refers to the ability of the machine tool to resist deformation when subjected to a constant load, and is an important indicator of machine tool design. Under the action of constant load and its own gravity, the static deformation of the machine tool will not only change the geometric accuracy of the parts and affect the processing quality, but also affect the vibration resistance, produc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M5/00
Inventor 陈五一郭江真
Owner BEIHANG UNIV
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