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Multi-axis synchronous motion control method of flexible electronic gear box

A multi-axis synchronization and motion control technology, applied in gear tooth manufacturing devices, components with teeth, belts/chains/gears, etc., can solve problems such as high price and restricting the development of gear processing equipment manufacturing industry.

Active Publication Date: 2020-02-14
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These foreign gear CNC systems are not only expensive, but also have a relatively strict market access system, which seriously restricts the development of my country's gear processing equipment manufacturing industry.

Method used

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  • Multi-axis synchronous motion control method of flexible electronic gear box
  • Multi-axis synchronous motion control method of flexible electronic gear box
  • Multi-axis synchronous motion control method of flexible electronic gear box

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] The tool parameters are: right-handed hob, normal modulus m n 1, number of hob heads Z b is 1, the hob pressure angle α is 20°, the hob helix angle λ is 1.93°, the installation angle γ is 23.07°, the hob axial feed V Z Y >0; the parameters of the processed workpiece are: gear normal modulus m n 1, the number of gear teeth Z c is 49, the gear pressure angle α is 20°, the gear is right-handed, and the helix angle β is 25°. The total time of position control is 11ms, which is divided into 11 position control time points.

[0052] The specific operation steps of the multi-axis synchronous motion control method of the flexible electronic gearbox are as follows:

[0053] (1) Determine the type of gear processing by "diagonal hobbing method"

[0054] When the "diagonal hobbing method" is used to process helical cylindrical gears, since the tool moves along the Z axis, the C axis generates additional rotation to meet the geometric relationship of the generated helix; when t...

Embodiment 2

[0094] The tool parameters are: left-handed hob, normal modulus m n 2, number of hob heads Z b is 1, the hob pressure angle α is 20°, the hob helix angle λ is 2.01°, the installation angle γ is 22.99°, the hob axial feed V Z >0, hob tangential feed V Y n 2, the number of gear teeth Z c is 27, the gear pressure angle α is 20°, the gear is left-handed, the helix angle β is -25°, the total time of position control is 11ms, which is divided into 11 position control time points.

[0095] The specific operation steps of the multi-axis synchronous motion control method of the flexible electronic gearbox are as follows

[0096] (1) Determine the type of gear processing by "diagonal hobbing method"

[0097] When the "diagonal hobbing method" is used to process helical cylindrical gears, since the tool moves along the Z axis, the C axis generates additional rotation to meet the geometric relationship of the generated helix; when there is a tool shifting process requirement, because ...

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Abstract

The invention relates to a multi-axis synchronous motion control method of a flexible electronic gear box and belongs to the technical field of numerically-controlled machine tools. The method is suitable for a numerically-controlled gear hobbing machine. According to a processing principle of the numerically-controlled gear hobbing machine, a function relation between gear geometric errors and track errors of all motion shafts of a machine tool is established; according to track error parameters of all the motion shafts, a processing error mathematical model of the tooth profile, tooth pitchand lead variation at each position control time point is established; a decoupling compensation model is established and used for calculating the compensation amount required by a workpiece rotationshaft at the next position control time point; processing error numerical values at all the position control time points are calculated, processing error average absolute values and processing error total compensation amounts obtained by not adopting the synchronous control method and obtained by adopting the synchronous control method in position control total time are obtained, and multi-axis synchronous motion control is achieved. By means of the multi-axis synchronous motion control method, the processing speed can be increased by 20-30%, the debugging time of the machine tool is shortenedby 10-30%, and accordingly the production cost is lowered.

Description

technical field [0001] The invention belongs to the technical field of numerical control machine tools, and in particular relates to a multi-axis synchronous operation control method of a numerical control gear hobbing machine with a coupling relationship. Background technique [0002] For general CNC gear processing machine tools, in order to realize multi-axis motion control, two DC motors are generally driven by a set of DC speed control device, the armatures of the two motors are connected in series, and the excitation coils are connected in parallel. In order to maintain speed synchronization, the two motor shafts must be rigidly connected, and only one of the two motors provides speed feedback data; at the same time, two sets of AC frequency conversion speed control systems are used to control two AC frequency conversion or servo motors as the master and slave shafts respectively. The two motors each provide their own speed feedback data. In order to maintain speed sy...

Claims

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Application Information

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IPC IPC(8): B23F23/00
CPCB23F23/006
Inventor 田晓青李旦吴雨
Owner HEFEI UNIV OF TECH
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