Harmonic reduction gear with high tooth shape

A harmonic reducer and tooth shape technology, which is applied in the direction of mechanical equipment, gear transmission, belt/chain/gear, etc., can solve the problem of the decrease of fatigue strength of flexible external teeth, and the service life and strength will not decrease, and the structure is reasonable , The effect of preventing the decrease of fatigue strength

Active Publication Date: 2013-12-25
上海鑫君传动科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the tooth width increases, the bending stress concentrates on the root of the tooth, especially causing a decrease in the fatigue strength of the flexible outer tooth.

Method used

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  • Harmonic reduction gear with high tooth shape
  • Harmonic reduction gear with high tooth shape
  • Harmonic reduction gear with high tooth shape

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Embodiment Construction

[0014] A harmonic reducer with a high tooth shape, comprising a circular rigid wheel 1, rigid internal teeth 7 are arranged on the inner surface of the circular rigid wheel, and a wave generator 3 is arranged inside the circular rigid wheel; the wave generator The generator is composed of a rigid cam 4 with an elliptical profile and a flexible bearing 5 embedded in the outer ring of the rigid cam; a flexible wheel 2 is set on the outer bearing ring of the wave generator, and the outer surface of the flexible wheel is set to match the inner ring of the circular rigid wheel. The outer teeth 6 with matching teeth; the flexible wheel and the annular rigid gear are coaxially arranged; the wave generator is driven by a motor as the rotation driving source; at least one of the annular rigid wheel and the flexible wheel, the pressure angle at the root of the tooth Less than standard pressure angle for standard rack tooth profile.

[0015] figure 2 It is a schematic diagram of the ge...

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Abstract

The invention discloses a harmonic reduction gear with a high tooth shape. The inner surface of an annular rigid wheel is provided with inner teeth, and the annular rigid wheel is provided with a harmonic generator. The harmonic generator comprises a rigid cam with the elliptical profile and a soft bearing embedded on the outer periphery of the rigid cam. The outer periphery of the bearing of the harmonic generator is sleeved with a soft wheel, and the outer surface of the soft wheel is provided with outer teeth matching with the inner teeth of the annular rigid wheel. The soft wheel is coaxial to the annular rigid wheel. The harmonic generator is driven by a motor to serve as a rotation driving source. The pressure angle of the tooth root of at least one of the annular rigid wheel and the soft wheel is smaller than a standard pressure angle of tooth shape of a standard rack. The harmonic reduction gear is reasonable in structure; on conditions that service life and strength of a tooth slotting cutter for machining the inner tooth of the annular rigid wheel are free of reduction and fatigue strength of the outer teeth of the soft wheel is also free of reduction, the rotary torque of the harmonic reduction gear at high reduction ratio can be increased.

Description

technical field [0001] The invention relates to a harmonic speed reducer with a high tooth shape. Background technique [0002] The harmonic reducer has the characteristics of high precision, small size and high load torque, and is widely used in the field of industrial robots. There are many kinds of tooth shapes of harmonic reducer. The more commonly used ones are involute tooth profile, multi-arc tooth profile and standard rack tooth profile. Among them, the standard rack tooth profile has the characteristics of easy processing and large rotational torque, so it is widely used. With a rack tooth profile, the pressure angle increases continuously in the direction of the tooth top and tooth root in the meshing range of the gears. [0003] At this time, in a harmonic reducer with a high reduction ratio, since the modulus of the gear becomes smaller, the tooth height decreases, resulting in a decrease in the rotational torque. In order to achieve a high reduction ratio of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H1/28
Inventor 顾京君
Owner 上海鑫君传动科技有限公司
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