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Processing method of tapered tooth spherical-involute tooth-form slant straight bevel gear

A spherical involute and straight-toothed bevel gear technology, which is applied in the direction of manufacturing tools, metal processing equipment, gear tooth manufacturing devices, etc., can solve the problems of less application, more complex machine tools than straight gears, and lower production efficiency, and achieve machine tool Simple movement, simple structure, and simplified sharpening effect

Inactive Publication Date: 2009-03-25
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Helical straight bevel gears belong to the class of curved bevel bevel gears. They have the characteristics of stable transmission and have a long history of application. However, the machine tool used for planing gears is more complicated than planing straight gears, and the production efficiency is not as good as that of milled arc gears. Less used so far

Method used

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  • Processing method of tapered tooth spherical-involute tooth-form slant straight bevel gear
  • Processing method of tapered tooth spherical-involute tooth-form slant straight bevel gear
  • Processing method of tapered tooth spherical-involute tooth-form slant straight bevel gear

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Effect test

Embodiment 1

[0078] To implement the above-mentioned shrink-tooth-making spherical involute tooth profile helical straight bevel gear processing method, one is to design a new machine tool, and the other is to implement shrink-tooth-making spherical involute tooth profile oblique on the existing multi-axis CNC machining center machine tool. Straight bevel gears. No matter which implementation method is adopted, the base cone angle must be δ b The tooth blank base cone is tangent to the spherical great circle plane Q and completes the relative pure rolling. All must satisfy the spherical great circle plane Q rotation angular velocity ω, tooth blank rotation angular velocity ω 1 It is a constant-ratio constant-speed rotation movement, avoiding over-cutting movement v W = R 0 ω cos 2 ωt ...

Embodiment 2

[0084] Double-station, double-cutterhead continuous gear division precision cutting helical straight bevel gear machine tool

[0085] For large batches and high-efficiency gear cutting, reducing the number of installations, continuous tooth division, and simultaneous cutting of both sides of the tooth surface are effective means to improve the efficiency of gear cutting.

[0086] Refer to Picture 10 , Shown in the figure is the top view of a double-station, double-cutterhead continuous fine-cutting helical bevel gear machine with a horizontally placed workpiece axis and a horizontal layout. The machine tool has the first and the second two stations, I and II two cutter heads. The two bevel gears to be processed are installed on the two ends of the same workpiece shaft in the workpiece holder 13, so the rotation direction and angular velocity are the same when the gear is cut. The transformation is rotated by the workpiece holder 13 along with the turntable 3 O * The rotation is re...

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Abstract

The invention discloses a machining method for a spherical involute toothed oblique straight bevel gear made by taped teeth. The machining method for a bevel gear adopts methods of gear skiving, gear milling and gear grinding. The methods of gear skiving, gear milling and gear grinding have the common technical characteristics that an oblique straight line ML on the big circular plane (Q) of a spherical surface, which is tangent to a toothed portion tangent circle with the radius of R0, represents a skiving cutter edge on an imaginary gear or uses a tangent plane which contains the ML and is perpendicular to the big circular plane (Q) of a spherical surface as the rotating plane of a single angle milling cutter end edge or the end surface of a grinding wheel, so a gear blank base cone with the base cone angle Delta b is tangent to the big circular plane (Q) of a spherical surface and the relative pure rolling is completed, the involute surface tooth cutting of the base cone is carried out to obtain the oblique straight bevel gear flank with the spherical involute teeth. In order to avoiding overcutting, the ML line for representing a skiving gear cutter edge or a straight line along the gear root cuts out along a straight line of the gear root with the speed of vW which is equal to R0 Omega sinaOmega t / cos<2> t or along the ML self straight line with the speed of vW which is equal to R0 Omega / cos<2> Omega t. One side flank of a gear is cut according to single tooth division. The machining of two side flanks is completed by adopting double cutter heads and double stations to cut teeth. A new machine tool is designed according to the method.

Description

Technical field [0001] The invention relates to a method for processing helical and straight bevel gears, more specifically, it relates to a method for processing helical and spur bevel gears with shrink-toothed spherical involute teeth. Background technique [0002] Helical and straight bevel gears belong to the category of curved spiral bevel gears. They have the characteristics of smooth transmission and have a long application history. However, the machine tool used for gear shaping is more complicated than that of straight gears, and the production efficiency is not as good as that of arc gears with milled teeth. Few applications have been so far. [0003] A pair of linear blade planers with tooth profile angles and a helical straight bevel gear cut by the pure rolling of the pitch cone of the tooth blank. The tooth profile is not the theoretically correct spherical involute but approximate "8" Word engagement. [0004] The applicant’s invention patent in China (application ...

Claims

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Application Information

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IPC IPC(8): B23F9/00B23F23/12
Inventor 彭福华呼咏李春光
Owner JILIN UNIV
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