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Precision Machining Control Method for Large Cylindrical Parts

A control method and precision machining technology, applied in the field of mechanical processing, can solve the problems of size and shape processing errors, processing errors, changing the weight ratio of machine tools, etc.

Active Publication Date: 2020-08-25
HUNAN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to its huge weight and inertia, large cylindrical parts make it difficult to stop accurately during processing and change the original counterweight ratio of the machine tool, resulting in processing errors
At the same time, the vibration during processing and the wear of the tool all increase the processing error
[0004] Specifically, for example, the torsional response will cause more or less cutting of large cylindrical parts in the x direction, and the axial surface of the tool is not consistent with the radial direction of large cylindrical parts, and the error in the x direction during processing extends to The processing surface of the entire part, resulting in size and shape processing errors

Method used

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  • Precision Machining Control Method for Large Cylindrical Parts
  • Precision Machining Control Method for Large Cylindrical Parts
  • Precision Machining Control Method for Large Cylindrical Parts

Examples

Experimental program
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Embodiment Construction

[0042] In order to set forth the present invention more specifically, the present invention is illustrated by the following specific examples:

[0043] Establishment of Angle Error Model for Torsional Response of Large Cylindrical Parts

[0044] In the processing of large cylindrical parts, because the turntable controls the rapid rotation of the cylindrical parts, since the diameter of the cylindrical parts exceeds 5 meters and the length exceeds 10 meters, its moment of inertia is large, and it is difficult to locate accurately in time and meet the requirements of rapid processing during processing. Accurate positioning, high-efficiency precision machining requirements. Schematic diagram of establishing the response model of large cylindrical parts, such as figure 1 shown. Among them, x-y-z is the ideal position after the workpiece is rotated by an angle, where y is the axial direction of the workpiece (cylindrical parts), z-direction is the radial direction passing throug...

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Abstract

The invention discloses a precision machining control method for parts in a large cylinder. The angle error, the displacement error and the time difference caused by the large rotational inertia of anaxle are considered, and machining parameters and a machining path are compensated for respectively, so that the machining precision is improved.

Description

Technical field: [0001] The invention relates to a precision machining control method for large cylindrical parts, belonging to the field of mechanical processing. [0002] technical background: [0003] Large-scale cylindrical parts (more than 10 meters in length and more than 5 meters in diameter) are key components in the aerospace, mining, rocket and missile and oil and gas transportation industries, and their machining accuracy is required to be high. Due to its huge weight and inertia, large cylindrical parts make it difficult to stop accurately during processing and change the original counterweight ratio of the machine tool, resulting in processing errors. At the same time, the vibration during processing and the wear of the tool all increase the processing error. [0004] Specifically, for example, the torsional response will cause more or less cutting of large cylindrical parts in the x direction, and the axial surface of the tool is not consistent with the radial ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/404
CPCG05B19/404G05B2219/35408
Inventor 张蓉陈雪林任芝兰唐田秋
Owner HUNAN INST OF TECH