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A Deterministic Modification Method for Outer Roundness of Shaft Parts

A deterministic technology for shaft parts, applied in the direction of manufacturing tools, grinding machines, grinding/polishing equipment, etc., can solve the research on the generation mechanism and control methods of abrasive belt grinding and polishing removal functions, and fail to achieve ultra-high precision roundness repair Shape and other problems, to achieve the effect of reducing the performance requirements of the machine tool, good shaping accuracy, and high shaping efficiency

Active Publication Date: 2021-10-26
NAT UNIV OF DEFENSE TECH
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  • Claims
  • Application Information

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Problems solved by technology

However, because the axis error evaluation method is different from the traditional plane and free-form surface, the generation mechanism of the removal function is also different from other deterministic modification removal functions.
The above-mentioned deterministic modification theory of shaft parts has not yet provided a basis for the surface error processing method, and has not studied the generation mechanism and control methods of the removal function of the abrasive belt grinding and polishing, and has not achieved ultra-high-precision roundness modification at the 0.1 μm level

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  • A Deterministic Modification Method for Outer Roundness of Shaft Parts
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  • A Deterministic Modification Method for Outer Roundness of Shaft Parts

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Embodiment Construction

[0045]The present invention will be further described below in conjunction with the accompanying drawings and specific preferred embodiments, but the protection scope of the present invention is not limited thereby.

[0046] Such as figure 1 As shown, the method for deterministically modifying the outer roundness of the shaft parts of the present invention, based on the analysis and control of the modification ability, the deterministic modification of the outer roundness includes the following steps:

[0047] 1) The multi-section roundness error data of the surface of the shaft part to be processed is obtained by measuring the cylindricity meter;

[0048] 2) Perform shape feature extraction and filter characteristic curve drawing on each roundness error data, and obtain the optimal filter parameter range T by simulation in combination with design requirements;

[0049] 3) filtering each roundness error data by using the range T of the filtering parameter;

[0050] 4) Calcul...

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Abstract

The invention discloses a method for deterministically modifying the roundness of the outer circle of a shaft part, which comprises: measuring the roundness error of the surface of the shaft part to be processed; filtering the measured data; calculating the processed measured data to obtain the processed The cut-off frequency and shape characteristics of the surface shape; use the removal function generation algorithm to generate the corresponding simulation removal function; use the simulation removal function to simulate the processing and verify the effect until the roundness error meets the requirements; in the same material and diameter as the shaft part to be processed Process on the cylindrical surface and obtain the actual removal function; use the actual removal function to simulate the processing until the roundness error meets the requirements; import the NC code generated by the simulation processing software into the NC system, and use the deterministic abrasive belt grinding and polishing machine tool to process the axis Parts are processed. The invention optimizes the shape of the processed surface and customizes the removal function, which can improve the shape modification efficiency and shape modification accuracy.

Description

technical field [0001] The invention relates to the field of ultra-precision machining of the outer circle surface of shaft parts, in particular to a method for deterministically modifying the roundness of the outer circle of shaft parts. Background technique [0002] The rapid development of aerospace industry, precision optics, precision instruments, medical machinery and other fields all require the support of ultra-precision processing technology. As the most important and basic processing equipment for ultra-precision machining, the demand for ultra-precision machine tools is increasing. As one of the core components of ultra-precision machine tools, the air-bearing spindle has the advantages of small frictional resistance, high rotation accuracy, and low vibration and noise, and has been widely used in the field of ultra-precision machining and measurement. The rotation accuracy of the current air bearing spindle can reach 15-25nm, and the roundness error and cylindri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B24B21/02B24B1/00
CPCB24B1/00B24B21/02
Inventor 戴一帆关朝亮孙梓洲胡皓彭小强
Owner NAT UNIV OF DEFENSE TECH
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