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Straightness recession computing method for lathe guide rail pair under random abrasion working condition

A calculation method and the technology of guide rail pairs, which are applied in calculations, special data processing applications, instruments, etc., and can solve problems such as large parameter magnitude spans

Inactive Publication Date: 2017-06-13
BEIJING UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Existing calculation methods have a large span of parameters and lack of detailed consideration of the random characteristics of actual working conditions

Method used

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  • Straightness recession computing method for lathe guide rail pair under random abrasion working condition
  • Straightness recession computing method for lathe guide rail pair under random abrasion working condition
  • Straightness recession computing method for lathe guide rail pair under random abrasion working condition

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Embodiment Construction

[0008] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are the Some, but not all, embodiments are invented. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0009] Step 1 Based on the Archard wear principle, calculate the single-point wear depth equation of the machine tool guide rail pair when considering the random action of load and speed

[0010] Starting from considering the influence of the contact load and contact speed of the machine tool guide rail pair on the guide rail, based on the Archard principle and the load...

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Abstract

The invention discloses a straightness recession computing method for a lathe guide rail pair under random abrasion working condition. The method comprises the following steps: based on an Archard abrasion principle, computing a single-point abrasion depth equation of the lathe guide rail pair while the load and speed random effects are considered; based on a random principle, computing a maximum abrasion depth model of the lathe guide rail pair while the feed length random change is considered; according to the single-point abrasion depth equation of the lathe guide rail pair while the load and speed random effects are considered, substituting the maximum abrasion depth model of the lathe guide rail pair while the feed length random change is considered, computing a straightness recession computing model of the lathe guide rail pair, and considering the effect of the lathe working condition to the precision of the guide rail pair according to the straightness recession computing model. The method is capable of making up the deficiency of the current computing method that the effect is not adequately considered, and is good for optimizing the precision computing result of the guide rail pair. The contact surface abrasion form of the guide rail pair and the evolutionary process thereof are comprehended deeply, so the design and application of the lathe processing technology are guided better.

Description

technical field [0001] The invention provides a method for calculating the straightness decline of a guide rail pair of a machine tool under random wear conditions, and belongs to the field of precision design of numerical control machine tools. Background technique [0002] It is of great significance to study the calculation and prediction of the guide rail accuracy of CNC machine tools to improve the overall reliability level of CNC machine tools. It is one of the main research directions in recent years to study the operation reliability of CNC machine tools from the perspective of the degradation law of CNC precision. During the expected working life, whether the machining accuracy of CNC machine tools can be maintained is directly related to the accuracy retention of its key components. Researching the accuracy retention of related components is one of the necessary ways to improve the overall reliability of CNC machine tools. Wear is the main reason for the failure of...

Claims

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Application Information

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IPC IPC(8): G06F19/00
CPCG16Z99/00
Inventor 程强任伟达闫国彬齐宝宝刘志峰
Owner BEIJING UNIV OF TECH
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