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Thermal deformation error compensation method for dry-cutting numerically-controlled gear hobbing machine tool and workpieces

A compensation method and gear hobbing technology, applied in metal processing machinery parts, manufacturing tools, metal processing equipment, etc., can solve problems such as failure to meet dimensional requirements and poor dimensional consistency

Active Publication Date: 2016-03-16
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the thermal deformation of the dry-cut CNC gear hobbing workpiece leads to poor dimensional consistency of the processed workpiece and cannot meet the dimensional requirements for subsequent finishing.

Method used

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  • Thermal deformation error compensation method for dry-cutting numerically-controlled gear hobbing machine tool and workpieces
  • Thermal deformation error compensation method for dry-cutting numerically-controlled gear hobbing machine tool and workpieces
  • Thermal deformation error compensation method for dry-cutting numerically-controlled gear hobbing machine tool and workpieces

Examples

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Effect test

Embodiment 1

[0065] see figure 1 , a dry cutting CNC gear hobbing machine tool and a thermal deformation error compensation method of the workpiece. While using the thermal deformation error compensation system of the CNC machine tool to compensate the thermal deformation error of the dry cutting CNC gear hobbing machine tool, the same compensation system is used to compensate the thermal deformation error of the dry cutting CNC gear hobbing machine tool. The thermal deformation error of the processed workpiece is compensated. In this embodiment, the straight tooth workpiece is taken as an example, and the analysis principle of the helical tooth workpiece is the same, and this embodiment only introduces the modeling and compensation of the thermal deformation error of the machine tool in the X direction (the radial direction of the workpiece), and the thermal deformation error modeling and compensation of the machine tool in the Y direction and Z direction. The deformation error modeling a...

Embodiment 2

[0173] The main part of this embodiment is the same as that of Embodiment 1. Specifically, an example of compensation is performed when using the YE3120CNC7 dry-cut CNC gear hobbing machine tool produced by Chongqing Machine Tool Group Co., Ltd. to process an automobile transmission gear with a modulus of 2.5mm and a number of teeth of 36. The steps are as follows :

[0174] 1) Combining the structural features of YE3120CNC7 dry cutting CNC gear hobbing machine tool and the thermal image of the machine tool during processing, determine the thermal sensitive points of the dry cutting CNC gear hobbing machine tool, and arrange 13 temperature sensors "T#2"-"T# at the thermal sensitive points 14", "T#1" temperature sensor is suspended outside the machine tool to measure the ambient temperature, specifically as figure 2 shown.

[0175] According to the temperature data collected by the temperature sensor in the actual processing, the temperature variables are fuzzy clustered, and...

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Abstract

The invention provides a thermal deformation error compensation method for a dry-cutting numerically-controlled gear hobbing machine tool and workpieces. According to the invention, while thermal deformation error compensation is carried out on the dry-cutting numerically-controlled gear hobbing machine tool by virtue of a thermal deformation error compensation system for the numerically-controlled machine tool, the thermal deformation errors of workpieces machined by the dry-cutting numerically-controlled gear hobbing machine tool are compensated by virtue of the same compensation system. The thermal deformation error compensation method comprises the following steps: firstly, establishing a thermal deformation error model for the workpieces and a thermal deformation error model for the dry-cutting numerically-controlled gear hobbing machine tool, integrating said error models in an online compensator, and during machining of the dry-cutting numerically-controlled gear hobbing machine tool, processing the temperature data obtained through measurement of temperature sensors by virtue of the online compensator to obtain error compensation values; secondly, conveying the compensation values to a machine tool numerically-controlled system; and finally, carrying out coordinate offset by virtue of the numerically-controlled system, thus realizing thermal deformation error compensation for the dry-cutting gear hobbing machine tool and the workpieces.

Description

technical field [0001] The invention belongs to the technical field of gear processing of numerically controlled gear hobbing machines, and in particular relates to a compensation method capable of simultaneously compensating thermal deformation errors of dry-cut numerically controlled gear hobbing workpieces and machine tool thermal deformation errors during dry-cut numerical control gear hobbing processing. Background technique [0002] The thermal deformation error of the machine tool refers to the phenomenon that the machine tool parts are deformed due to the motor, component movement heating, cutting heat conduction, and environmental temperature changes during the working process of the machine tool, thereby affecting the machining accuracy of the machine tool. The thermal deformation error compensation of the machine tool is to measure the temperature variable value that affects the thermal deformation error of the machine tool when the machine tool is working by means...

Claims

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Application Information

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IPC IPC(8): B23Q11/00
CPCB23Q11/0007
Inventor 曹华军朱利斌杨潇李本杰张应
Owner CHONGQING UNIV
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