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Wave generator

A technology of wave generator and bearing inner ring, applied in the field of wave generator, can solve the problems of high cost and inconvenient processing of round shape

Pending Publication Date: 2019-11-05
AICI TECH (NINGBO) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to realize the precise transmission of the harmonic reducer, the elliptical shape precision of the elliptical cam in the wave generator of the existing harmonic reducer is relatively high, and the existing wave generator is realized by installing the elliptical cam into the thin-walled bearing , the processing accuracy of the elliptical cam is high, and the cost of precise elliptical processing is higher than that of the same precision circular shape, and it is not convenient to rotate the precision elliptical parts and wave generators such as motor shafts, gears, and synchronous pulleys into the parts. Machining directly on a part

Method used

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Effect test

Embodiment 1

[0031] Example 1 as Figure 1~2 As shown, this embodiment adopts the method of tight fit and adhesive to fix the inner support shaft and the inner ring of the bearing; the inner hole of the bearing inner ring with different wall thickness and the cylindrical inner support shaft journal are applied After the metal structure glue is tightly matched to form a member with an elliptical bearing inner ring roller raceway that moves in one piece, the outer circumference of the inner support shaft journal is equal to the inner hole circumference of the bearing inner ring after matching, and then it is the same as that of the existing technology. The same bearing outer ring, balls and bearing cage of the generator are assembled into a complete wave generator; the wave generator in this embodiment includes a rigid coupling structure fixed by a top screw, and the rigid coupling structure is directly processed and then The inner support shaft part is composed of a hollow shaft tube with a...

Embodiment 2

[0032] Example 2 as Figure 3~4 As shown, this embodiment adopts the method of tight fit and keyed circumferential fixation to realize the fixation of the inner support shaft and the inner ring of the bearing; The position is also processed with key grooves, and the inner hole of the inner ring of the bearing with different wall thickness and the journal of the cylindrical inner support shaft are keyed and matched to form an integrated movement component with the roller raceway of the inner ring of the elliptical bearing. After matching, the inner support shaft The outer circumference of the neck is equal to the inner hole circumference of the inner ring of the bearing, and then the outer ring of the bearing, the ball and the bearing cage identical to the wave generator of the prior art are assembled into a complete wave generator; the inner support in this embodiment The shaft is a hollow shaft part with a keyway processed in the inner hole. The inner support shaft is made of...

Embodiment 3

[0033] Example 3 as Figure 5~6 As shown, this embodiment selects the inner support shaft combined with two parts, and realizes the fixing of the inner support shaft and the inner ring of the bearing by clamping the two ends of the inner ring of the bearing up and down; both inner support shaft parts include flanges and parts Cylindrical inner support shaft journal, two inner support shaft parts are respectively inserted into the bearing inner ring from both ends of the inner hole of the bearing inner ring and locked to each other with screws, the inner hole of the bearing inner ring with unequal wall thickness and the two inner support shaft parts Cylindrical journals are tightly fitted, and the outer circumference of the journal of the inner support shaft is equal to the circumference of the inner hole of the bearing inner ring. Fixed, forming a component with an elliptical bearing inner ring roller raceway that moves integrally; then assemble the complete wave generator wit...

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Abstract

The invention discloses a wave generator. The wave generator comprises a rolling bearing and an inner supporting shaft, wherein a bearing outer ring is an equal-thickness elastic thin-wall bearing outer ring; a bearing inner ring is an unequal wall thickness bearing inner ring; a shaft journal of the inner supporting shaft is matched with an inner hole of the bearing inner ring and is circumferentially fixed with the bearing inner ring; and the bearing outer ring is supported by the bearing inner ring through rollers to elastically deform into a noncircular shape. The inner supporting shaft can be a solid shaft or a hollow shaft, can be short and has the effects of rounding the inner hole of the bearing inner ring and driving the bearing inner ring to circumferentially rotate; after the shaft journal of the inner supporting shaft is matched with the inner hole of the bearing inner ring, the outer circumference of the shaft journal of the inner supporting shaft is equal to the circumference of the inner hole of the bearing inner ring; the shaft journal of the inner supporting shaft refers to a matching area of the inner supporting shaft and the inner hole of the bearing inner ring;and the shaft section boundary of the shaft journal can be a complete perfect circle or a curve containing several segments of circular arcs on one perfect circle covering all the boundaries.

Description

technical field [0001] The invention relates to the technical field of reducers, in particular to a wave generator for a harmonic reducer. Background technique [0002] Harmonic gear transmission was invented by American inventor C.W.Musser in 1955. It is a new type of transmission method that uses elastic deformation of flexible working components for motion or power transmission. It breaks through the rigid component mechanism of mechanical transmission. Mode, using a flexible component to achieve mechanical transmission, thus obtaining a series of special functions that other transmissions are difficult to achieve. Because the deformation process of the middle flexible member is basically a symmetrical harmonic, it gets its name. Except that the former Soviet Union called this kind of transmission wave transmission or flexible wheel transmission, the United States, Britain, Germany, Japan and other countries all call it "harmonic transmission". [0003] The principle of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C33/58F16C35/063B23B5/00B23Q3/12B24B5/04
CPCB23B5/00B23Q3/12B23Q2703/10B24B5/04F16C33/583F16C35/0635Y02P70/10
Inventor 凌子龙
Owner AICI TECH (NINGBO) CO LTD