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A Method of Improving the Machining Accuracy of Internal Gear Honing Wheel Power Honing

A technology of machining precision and tooth honing, which is applied in the field of improving the machining precision of internal gear honing wheels for powerful tooth honing, can solve problems such as unpredictable tooth surface profile error, machine tool damage, and inability to comprehensively model problems with multiple indicators, and achieve fast solution speed. , reduce modeling costs, optimize the effect of improving the effect

Active Publication Date: 2018-06-29
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, in order to obtain a more accurate prediction model of the tooth surface profile error and reduce the cost brought by a large number of tests, some scholars have arranged the process parameters based on the central composite test design. However, the process parameters set by the central composite test design The parameters will exceed the scope of the layout, which will easily cause damage to the machine tool. Some scholars analyze and model the independent index multi-factor problem based on the response surface method, because the response surface test design is limited to finding the relationship between the independent test index and each factor. Therefore, it is impossible to predict the profile error of the tooth surface and select the best combination of gear cutting process parameters.

Method used

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  • A Method of Improving the Machining Accuracy of Internal Gear Honing Wheel Power Honing
  • A Method of Improving the Machining Accuracy of Internal Gear Honing Wheel Power Honing
  • A Method of Improving the Machining Accuracy of Internal Gear Honing Wheel Power Honing

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Embodiment 1

[0050] Taking microcrystalline corundum internal gear honing wheel honing 20CrMnTi gear as an example, HMX-400 CNC internal gear honing wheel powerful gear honing machine is used. The basic parameters of the gear are: modulus m n =2.25, number of teeth z=73, gear helix angle β=33°, pressure angle α=17.5°. The basic parameters of the internal gear honing wheel are: modulus m n =2.25, number of teeth z=123, honing wheel helix angle β=41.981°, pressure angle α=17.5°. The feeding method is axial and radial continuous feeding. The profile errors of various tooth surfaces are detected by the Klingelnberg-P40 gear measuring center.

[0051] see figure 1 , an operation step for improving the machining accuracy of internal gear honing wheel power honing is as follows:

[0052] Step (1), according to the powerful honing process of the internal gear honing wheel of the processed gear, extract the honing process parameters that affect the gear machining accuracy, design the combinati...

Embodiment 2

[0090] 1. Workpiece parameters

[0091] Concrete flow process of the present invention is as figure 1 shown. Taking microcrystalline corundum internal gear honing wheel honing 20CrMnTi gear as an example, HMX-400 CNC internal gear honing wheel powerful gear honing machine is used. The basic parameters of the gear are: modulus m n =2.36, the number of teeth z=18, the gear helix angle β=33°45", the pressure angle α=17°. The basic parameters of the internal tooth honing wheel are: modulus m n =2.36, number of teeth z=95, honing wheel helix angle β=41.696°, pressure angle α=17°. The feeding method is axial and radial continuous feeding. The profile errors of various tooth surfaces are detected by the Klingelnberg-P40 gear measuring center.

[0092] 2. Process parameters

[0093] The ranges of the four gear honing process factors are:

[0094] Work gear speed 20002 X Z S <3(times),

[0095] 3. The operation steps for improving the machining accuracy of the internal gear hon...

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Abstract

The invention relates to a method for improving machining accuracy of internal honing wheel strong gear honing. The method comprises the following steps that 1, according to an internal honing wheel strong gear honing technology of a machined gear, the gear honing process parameters influencing the gear machining accuracy are extracted, the gear honing process parameter combination is designed, the gear honing machining experiment is conducted, and the tooth surface outline error indexes of the machined gear are obtained; 2, according to the gear honing process parameter combination and the tooth surface outline error indexes of the machined gear, the mathematical model of the tooth surface outline error is constructed through the response surface nonlinear fitting method; 3, on the basis of the anticipated machining precision value corresponding to each tooth surface outline error index, the weight ratio is applied to each tooth surface outline error model, and the tooth surface comprehensive outline error mathematical model is constructed; and 4, based on the artificial immune clone selection algorithm, the gear honing process parameters are optimized, and the optimal honing process parameters are obtained. According to the method, the machining accuracy of the internal honing wheel strong gear honing is improved, and the theoretical basis is provided for the practical selection of the internal honing wheel strong gear honing process parameters and the improvement of the gear precision.

Description

technical field [0001] The invention belongs to the technical field of mechanical processing technology, and in particular relates to a method for improving the processing precision of an internal gear honing wheel for power honing. Background technique [0002] In the actual powerful honing process of the internal honing wheel, the motion between the internal honing wheel and the workpiece gear can evolve into an internal meshing transmission between a pair of cross-axis helical gears. The existence of factors such as different grain sizes, different interpolation periods of the CNC system, rigidity of the machine tool motor, machine tool vibration, thermal deformation, etc., causes the workpiece gear to not be a smooth involute surface, and will form certain honing grooves, grooves, etc. The depth and direction of the workpiece have a decisive influence on the profile errors of the tooth surfaces of the workpiece. Theoretical tooth surface groove depth and orientation can...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23F19/05G06F17/50
CPCB23F19/057G06F30/17G06F30/20
Inventor 夏链韩江袁彬王东岭孙超鸿陈鹏
Owner HEFEI UNIV OF TECH
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