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A dynamic design method of high speed machining machine tool structure considering the stiffness of joint

A technology for processing machine tools and complete machine structures, applied in design optimization/simulation, calculation, special data processing applications, etc., can solve the problems of theoretical calculation of angular stiffness, inability to meet the dynamic design of high-speed processing machine tools, lack of dynamic parameter theoretical models, etc.

Active Publication Date: 2019-01-18
SOUTHEAST UNIV
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Problems solved by technology

However, the theoretical calculation of the angular stiffness of the rolling guide rail joint is difficult. The existing modeling methods at home and abroad simplify the rolling guide rail joint to two linear stiffnesses and ignore the three angular stiffness coefficients, which cannot meet the needs of dynamic design of high-speed machining tools.
As far as the planar junction is concerned, there is still a lack of dynamic parameter theoretical models

Method used

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  • A dynamic design method of high speed machining machine tool structure considering the stiffness of joint
  • A dynamic design method of high speed machining machine tool structure considering the stiffness of joint
  • A dynamic design method of high speed machining machine tool structure considering the stiffness of joint

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Embodiment Construction

[0105] In the following, an embodiment (high-speed precision internal-circle compound grinding machine) will be used to further describe the dynamic design method of the high-speed machining machine in consideration of joint stiffness coupling in the present invention.

[0106] Figure 7 The specific content of the high-speed machining machine tool structure dynamic design method considering the joint stiffness of the present invention is given, including the following steps:

[0107] Step 1: 3D digital modeling of high-speed machining tools

[0108] Use 3D modeling software (such as Solidworks) to establish a 3D digital (CAD, CAE) model of a high-speed precision internal cylindrical compound grinding machine, such as Figure 8 shown.

[0109] Step 2: Analysis of dynamic parameters of the plane joint of the machine tool

[0110] Step 2a: Using formula (1), calculate the normal stiffness K of the plane junction n

[0111] Step 2b: Using formula (2), calculate the tangentia...

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Abstract

The invention provides a dynamic design method of a whole structure of a high-speed machining machine tool considering the rigidity of a joint part, which comprises the following steps: step 1, performing a three-dimensional digital modeling of the high-speed machining machine tool; 2, calculating that dynamic parameters of the plane joint part of the machine tool; 3, calculating that dynamic parameters of the joint part of the machine tool guide rail; 4, analyzing and calculating that dynamic characteristic of the whole machine structure of the high-speed machining machine tool; 5, dynamic designing that whole machine structure of the high-speed machine tool. By adopting the dynamic design method of the high-speed machining machine tool considering the rigidity of the joint part providedby the invention, the dynamic modeling and the dynamic design accuracy of the high-speed machining machine tool structure can be greatly improved, and the design period can be shortened. It is not only convenient for the forward design of high-speed machining machine, but also improves the success rate of one-time design.

Description

technical field [0001] The invention relates to a dynamic design method for a complete high-speed machining machine tool considering the stiffness of a joint, and belongs to the field of numerical control machine tool design. Background technique [0002] CNC machine tools are developing in the direction of high speed and high precision, and the industry has higher and higher requirements for the dynamic performance of high-speed machining machine tools. Establishing the dynamic model of the high-speed machining machine tool, carrying out the dynamic analysis of the whole machine, and then completing the dynamic design of the machine tool are the primary technical links in the development of high-speed machine tools. [0003] The research shows that the modeling accuracy of the dynamic parameters of the machine tool joint is the main factor determining the accuracy of the dynamic design of the high-speed machining machine tool. Typical joints of high-speed machining machine...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/17G06F30/23
Inventor 蒋书运
Owner SOUTHEAST UNIV
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