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A concave-convex meshing arc gear rack mechanism without relative sliding

A circular arc gear, circular arc rack technology, applied in belt/chain/gear, transmission, mechanical equipment, etc., can solve the problems of low bending strength and contact strength, limited bearing capacity, etc.

Active Publication Date: 2018-11-02
CHINA UNIV OF GEOSCIENCES (WUHAN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the meshing principles of these two rack and pinion pairs strictly follow the meshing theory of curved surfaces. From the design theory, there must be relative sliding between the tooth surfaces, so traditional tooth surface wear, tooth surface gluing and tooth surface plastic deformation cannot be avoided. The common failure mode of gear transmission has seriously affected the service life and reliability of the gear pair. At the same time, because the involute tooth shape adopted is a cantilever beam structure, and the meshing method of the tooth surface is convex-plane meshing, the bending strength and contact The strength is not high, and its carrying capacity is limited

Method used

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  • A concave-convex meshing arc gear rack mechanism without relative sliding
  • A concave-convex meshing arc gear rack mechanism without relative sliding
  • A concave-convex meshing arc gear rack mechanism without relative sliding

Examples

Experimental program
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Effect test

Embodiment 1

[0067] Embodiment 1: The present invention provides a concave-convex meshing arc gear rack mechanism without relative sliding, and its structure is as follows figure 1 As shown, a pair of transmission pairs consisting of a spiral arc gear 6 with spiral concave arc tooth grooves 5 uniformly distributed on the outer surface and an arc rack 8 with convex arc teeth 7 uniformly distributed on the upper surface, spiral arc gear The rotating shaft of the driver 1 is connected through the central hole 10 of the spiral arc gear. In this embodiment, the driver is a motor, and the rotation direction of the motor is counterclockwise, which drives the spiral arc gear to drive counterclockwise to realize the horizontal movement of the arc rack to the left. The driver is installed on the driver mount 2, and the driver mount is fixed.

[0068] The installation method of the spiral arc gear 6 and the arc rack 8 is as follows: the upper surface of the arc rack with convex arc teeth 7 facing upward...

Embodiment 2

[0121] Embodiment 2: The present invention provides a concave-convex meshing arc gear rack mechanism without relative sliding, such as Figure 7 Shown. In this embodiment, the arc rack 8 is fixed, the spiral arc gear 6 is connected to the rotating shaft of the driver 1 through the central hole 10 of the spiral arc gear, and the spiral arc gear rotates under the drive of the driver 1 through the spiral concave arc tooth The continuous meshing action between the groove 5 and the convex arc teeth 7 makes the spiral arc gear move in parallel while rotating, that is, the spiral arc gear performs pure rolling on the arc rack. When installing the spiral arc gear and the arc rack, the spiral concave arc tooth groove 5 on the spiral arc gear and the convex arc tooth 7 on the arc rack are in meshing state. As the spiral arc gear rotates, the spiral The coincidence degree of the concave arc tooth groove and the convex arc tooth meshing is greater than 1, so as to realize the continuous a...

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Abstract

The invention relates to a circular-arc concave-convex engaged gear and rack mechanism without relative slide. The circular-arc concave-convex engaged gear and rack mechanism comprises a transmission pair consisting of a spiral circular-arc gear and a circular-arc rack, wherein spiral concave circular-arc tooth sockets are uniformly distributed in the outer surface of the spiral circular-arc gear; convex circular-arc teeth are uniformly distributed on the surface of the circular-arc rack; the spiral concave circular-arc tooth sockets are matched with the convex circular-arc teeth; the spiral circular-arc gear is connected with a rotating shaft of a driving device; the center line of each spiral concave circular-arc tooth socket is equal-lifting-distance cylindrical helix; and the structural shape of the spiral circular-arc gear and the structural shape of the circular-arc rack are determined by design parameters. When the mechanism is mounted, correct engagement of the spiral concave circular-arc tooth sockets and the convex circular-arc teeth needs to be guaranteed to realize the transmission of the circular-arc gear and the circular-arc rack. When the gear and rack mechanism disclosed by the invention is in transmission, failures modes, such as the slide of tooth surfaces, agglutination of the tooth surfaces, wear of the tooth surfaces, and plastic deformation of the tooth surfaces are avoided; the gear and rack mechanism has the advantages of being high in overlap ratio, simple in structure, easy to process, high in transmission efficiency, high in bearing capacity and the like; and the gear and rack mechanism is suitable for being popularized and applied in the field of mini machinery, micro-machinery and conventional machinery.

Description

Technical field [0001] The invention relates to a concave-convex meshing circular arc gear rack mechanism without relative sliding, in particular to a concave-convex meshing circular arc gear tooth without relative sliding for gear rack transmission based on the principle of curve meshing Article agencies. Background technique [0002] Gear transmission is the basic transmission form in mechanical transmission. The development of modern industrial equipment has further improved the requirements for the quality and performance of gear transmission components. In recent years, diversified gear meshing forms and their corresponding diversified teeth 形结构。 Shape structure. For example, a new type of micro transmission mechanism has been innovated in the field of gear meshing theory at home and abroad. In the Chinese patent literature, the patent number is 201010105902.3, which discloses "a helical gear mechanism", and the patent number is 201510054843.4, which discloses a "helical ar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H19/04F16H55/17F16H55/26F16H55/08G06F17/50
CPCF16H19/04F16H55/0826F16H55/088F16H55/17F16H55/26G06F30/17
Inventor 陈祯丁华锋文国军罗林波杨静
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)