Involute spherical gear transmission pair

A technology of involute gears and ball gears, which is applied in the direction of gear transmissions, transmissions, belts/chains/gears, etc., can solve the problem of no transmission principle error, etc., and achieve the effect of ensuring machining accuracy

Inactive Publication Date: 2014-02-12
杨兆奎
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Chinese patent application 96118183.4 discloses an involute spherical gear transmission mechanism, which includes a convex gear and a concave gear. The gear teeth are respectively distributed on two spherical crowns and arranged continuously in a ring. One of the gears has a gear ring inserted into the groove between the teeth of the other gear to realize the meshing of the gear teeth, so that there is no error in the transmission principle, but the ball gear transmission mechanism can only transmit two kinds of motions: pitch and side swing

Method used

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  • Involute spherical gear transmission pair

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specific Embodiment approach 1

[0054] Specific implementation mode one: combine figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , Image 6 and Figure 7 To describe this embodiment in detail, the ball gear transmission pair 1 of this embodiment includes a ball gear 2 with a central convex tooth 7 and a ball gear 3 with a central groove 8. The ball gear 2 and the ball gear 3 have a spherical crown 4 and an axis 5 , there is an involute gear tooth 6 on the spherical crown 4, the position of the spherical center of the spherical gear 2 and the spherical center of the spherical gear 3 are relatively fixed, the joint spherical surface of the spherical gear 2 is tangent to the joint spherical surface of the spherical gear 3, and the spherical center of the spherical gear 2 The distance to the center of the ball gear 3 is equal to the sum of the radius of the ball gear 2 and the radius of the ball gear 3 passing through the tangent point of the pitch sphere of the ball gear 2 and the pitch sphere of t...

specific Embodiment approach 2

[0058] Specific implementation mode two: combination figure 2 , image 3 , Figure 4 , Figure 5 , Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12 , Figure 13 Figure 14 and Figure 15 To describe this embodiment in detail, the ball gear 17 of the ball gear transmission pair of this embodiment is made of a central convex tooth 19, a first gear ring 20, a second gear ring 21, a third gear ring 22, and a fourth tooth ring. The ring 23 and the fifth gear ring 24 are formed by removing the interfering parts and fixing them together. The ball gear 18 is formed by removing the interfering parts of the first ring gear 20, the second ring gear 21, the third ring gear 22, the fourth ring gear 23 and the fifth ring gear 24 which are made separately.

[0059] Do not have tooth core 16 in ball gear 7, ball gear 8 in ball gear 17, ball gear 18 made with this method.

[0060] The central protruding tooth 19, the first ring gear 20, the second ring gear 21, the thi...

specific Embodiment approach 3

[0061] Specific implementation mode three: combination Figure 16 , Figure 17 , Figure 18 , Figure 32 ,and Figure 33 To describe this embodiment in detail, the ball gear transmission pair in this embodiment is a helical gear ball gear transmission pair 25, which includes a ball gear 26 with central convex teeth and a ball gear 27 with central grooves. The tooth length direction of the gear teeth 28 on the ball gear 26 and the ball gear 27 is different from the direction of the meridian, but a spiral with a certain angle with the direction of the meridian. Curves like curves. The rotation direction of the curve in the tooth length direction of the gear teeth 28 on the ball gear 26 is opposite to the rotation direction of the curve in the tooth length direction of the gear teeth 28 on the ball gear 27 .

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Abstract

The invention discloses an involute spherical gear transmission pair. The involute spherical gear transmission pair comprises two spherical gears, wherein involute gear teeth are uniformly distributed on the circumferences in the weft directions of the spherical surfaces of spherical cap sections on spherical caps; the tooth thickness directions are along the weft directions of the spherical caps; the numbers of the teeth on the wefts at different heights are variable; the number of the teeth on low-latitude parts is large; the number of the teeth on high-latitude parts is small; a plurality of tooth rings from the high latitude to the low latitude are formed. The spherical gears are sectioned over the axis; the outer contours of the sections of the tooth rings form the outer contours of the involute spherical gear teeth along the meridians in the tooth thickness directions; the outer counters of the gear teeth formed by the sections of the tooth rings are divided into two groups; odd-number groups and even-number groups are respectively the same as the shapes of the end surface teeth of two straight gears of which the gear teeth are placed in a staggered way.

Description

technical field [0001] The invention relates to an involute ball gear transmission pair which can be used in flexible wrist joints of robots and joints of various bionic mechanical compound motions and other fields. Background technique [0002] The ball gear transmission pair was first invented by Norwegian engineer Ole.Monlang in the 1980s. It made a number of regularly distributed pits on one spherical crown, and inlaid the same number of fingers on the other spherical crown. The meshing of convex teeth, dimples and finger-shaped convex teeth can realize the approximate spherical pure rolling motion of the two spheres, and can transmit pitch, side swing and rotation motions. However, there is a transmission principle error in this ball gear transmission pair. [0003] Chinese patent application 96118183.4 discloses an involute spherical gear transmission mechanism, which includes a convex gear and a concave gear. The gear teeth are respectively distributed on two spheric...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H1/04
CPCF16H1/24
Inventor 杨兆奎杨阔李凯
Owner 杨兆奎
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