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Repair method of pitch curve concave cusp design defect of N-blade non-circular gear

A repair method and non-circular gear technology, which is applied in design optimization/simulation, calculation, special data processing applications, etc., can solve the problem that the transmission accuracy of N-lobed non-circular gear pairs varies greatly and affects the transmission performance of N-lobed non-circular gear pairs 、No problems such as the effect of repairing the design defects of the concave point were raised

Active Publication Date: 2019-01-15
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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Problems solved by technology

[0005] However, the straight line repair in the existing repair method makes the transmission accuracy of the N-lobed non-circular gear pair change greatly, which seriously affects the transmission performance of the N-lobed non-circular gear pair; the N-lobed non-circular gear pair after spline interpolation and arc repair The accuracy of the auxiliary transmission mainly depends on the selection of the interpolation point and the gear shaper cutter, and no reasonable method has been proposed to judge the repair effect of the design defect of the concave point

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  • Repair method of pitch curve concave cusp design defect of N-blade non-circular gear
  • Repair method of pitch curve concave cusp design defect of N-blade non-circular gear
  • Repair method of pitch curve concave cusp design defect of N-blade non-circular gear

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Embodiment Construction

[0099] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0100] Such as figure 1 As shown, a method for repairing the design defect of the concave cusp point of the N-lobed non-circular gear pitch curve includes the following steps:

[0101] Step 1. Obtain the pitch curve r(θ) of the N-lobed non-circular gear satisfying the turnover constraint by rotating the pitch curve of the N-lobed non-circular gear with the design defect of the concave cusp point around the center of gyration:

[0102] figure 2 The pitch curve of the N-lobe non-circular gear with the design defect of concave cusp. figure 2 In , the fixed coordinate system o-xy is rigidly connected to the center of gyration o, assuming an arbitrary curve r in the plane 1 (θ)(θ∈[0, 2π / N]) is the single-blade pitch curve in N-lobed non-circular gears, and the polar angle θ is measured counterclockwise with the positive direction of the x-axis, then by...

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Abstract

The invention discloses a method for repairing the design defect of concave cusp pitch curve of N-leaf non-circular gear, this method takes the given turning time of the repaired joint curve as the constraint condition, based on the analysis of the concave cusp characteristics of pitch curve in N-blade non-circular gear transmission, a planar curve with minimum average kinetic energy is designed based on variational principle, and the plane curve is used to replace the pitch curve of the non-circular gear in the tiny neighborhood with concave cusps, the minimum average kinetic energy repair ofN-blade non-circular gear pitch curve concave cusp design defects is realized, which overcomes the shortcomings of the existing repair methods of N-blade non-circular gear pitch curve concave cusp design defects, and meets the requirements of high stability transmission of N-blade non-circular gear pairs.

Description

technical field [0001] The invention belongs to the technical field of non-circular gear transmission, and relates to a method for repairing design defects of pitch curves of non-circular gears, in particular to a minimum average kinetic energy repair method for design defects of concave cusps of pitch curves of N-lobed non-circular gears. Background technique [0002] Non-circular gear pairs are used to transmit non-uniform motion between two shafts. Its pitch curve shape is specially designed according to the motion requirements. Compared with other mechanisms that can obtain non-uniform speed transmission (such as cams, connecting rods, etc.), it has stable transmission, compact structure, high motion precision, large transmission power and transmission efficiency. Advanced advantages. The pitch curves of non-circular gears are mainly divided into two categories: open pitch curves and closed pitch curves: the non-circular gear pairs with open pitch curves are used to rea...

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/17G06F30/20Y02E10/72
Inventor 范守文张鑫范帅蓝维彬潘钰林浩然邹云夫
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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