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Method for stimulating fluid-solid-heat coupling value of machine tool spindle

A technology of machine tool spindles and simulation methods, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve the problems that the deformation of the spindle has a large influence, and the influence of the spindle bracket is not considered, so as to avoid low efficiency, accurate simulation results, Numerically simulated precise effects

Active Publication Date: 2012-07-04
XI AN JIAOTONG UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In addition, in the general thermal deformation calculation of the main shaft, the displacement constraint is generally directly imposed on the main shaft, and the influence of the main shaft support (ram seat) is not considered. In fact, the ram seat has a great influence on the deformation of the main shaft.

Method used

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  • Method for stimulating fluid-solid-heat coupling value of machine tool spindle
  • Method for stimulating fluid-solid-heat coupling value of machine tool spindle
  • Method for stimulating fluid-solid-heat coupling value of machine tool spindle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0052] 1. Geometric modeling

[0053] 11 Use the geometric modeling software Pro / E to simplify the original ram model as necessary:

[0054] (1) Delete steps smaller than 1mm;

[0055] (2) Delete the threaded hole;

[0056] (3) Delete the feed motor and synchronous belt part at the rear end of the ram;

[0057] (4) Delete the broach mechanism;

[0058](5) Retain the thin steel plate on the rear tailpiece;

[0059] (6) The simplified model of the ram seat is retained, and only its ribs and contact points with the ram are retained in the model of the ram seat, and all other details are simplified.

[0060] 1.2 Use Pro / E software to establish the geometric model of the coolant according to the size of the coolant flow channel on the basis of the original ram model.

[0061] 1.3 Use Pro / E software to replace the bearing in the ram with a ring of the same size as the bearing.

[0062] 2. Calculate the temperature field and analyze the boundary conditions

[0063] For the cal...

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Abstract

The invention discloses a method for stimulating a fluid-solid-heat coupling value of a machine tool spindle, which comprises the steps of: establishing a model of a spindle cooling liquid, replacing bearings in a spindle with equivalent rings with same sizes, simplifying the model; calculating relevant external boundary conditions of a spindle temperature field; guiding into grid division software ANSYS, ICEM and CFD for carrying out fluid and solid grid division; guiding into CFX software for carrying out fluid-solid-heat coupling calculation; guiding the simplified geometrical model into astable temperature field module in a workbench, neglecting a cooling liquid model, re-dividing a grid; re-calculating a temperature field of the spindle according to the temperature field boundary condition; calculating radial and axial elastic modulus of the equivalent ring by using radial and axial rigidity of each bearing, and correcting the elastic modulus of each equivalent ring in the workbench; guiding the temperature obtained from the calculation of the stable temperature field into a stable static analyzing module in the workbench, and calculating the heat deformation.

Description

technical field [0001] The invention relates to a method in the field of computer-aided analysis tools, in particular to a fluid-solid-thermal coupling numerical simulation method of a machine tool spindle. Background technique [0002] The thermal deformation of the machine tool spindle will not only seriously affect the machining accuracy, but also affect the bearing life. In the design stage of the spindle, the finite element software is used to analyze the temperature field and thermal deformation, to compare the heat generation and thermal deformation under different conditions, and to optimize the cooling parameters and structure of the spindle are of great significance to the design and finalization of the spindle. [0003] At present, there is no method to accurately calculate the thermal deformation of the spindle using finite element software. The current main shaft finite element calculation methods mainly include: [0004] (1) Two-dimensional calculation method...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
Inventor 李宝童洪军张进华杜飞郭俊康
Owner XI AN JIAOTONG UNIV
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