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Precision duplex planetary reducer structure

A double-connected planetary and reducer technology, applied to mechanical equipment, transmission parts, gear transmissions, etc., to achieve the effects of compact structure, low noise, and high tooth surface contact rate

Inactive Publication Date: 2017-12-26
WUXI WEIFU CHINA ITAL GEAR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the flexible spline structure, the wall thickness of the flexspline structure is very thin, which determines its life, and the rigidity has a certain limit range. Its rated output torque cannot be compared with RV and planetary reducers.

Method used

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  • Precision duplex planetary reducer structure

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Embodiment Construction

[0029] The present invention will be further described below in conjunction with specific drawings and embodiments.

[0030] Such as figure 1 Shown: a precision double planetary reducer, including a separate planet carrier, two sets of meshing gear pairs and a helical drive wheel 6;

[0031] The separated planetary carrier includes a front-end planetary carrier 2 and a rear-end planetary carrier 4;

[0032] The two sets of meshing gear pairs include a first set of external meshing gear pairs and a second set of internal meshing gear pairs;

[0033] The first set of external meshing gear pairs includes several spur planetary gears 5 and spur sun gear pinion shafts 7, which are arranged outside the split planet carrier in mesh with each other;

[0034] The second set of internal meshing gear pairs includes several planetary pinion shafts 1 and fixed internal ring gears 3, and the two mesh with each other and are arranged inside the separated planetary carrier;

[0035] The sp...

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Abstract

The invention provides a precision duplex planetary reducer. The main device structure comprises two sets of engaged gear pairs and a separate planet carrier combination. An oblique tooth drive wheel is integrally arranged at the rear end of the main device structure; the outer engaged gear pair as the first set is arranged outside a planet carrier and is formed by making multiple planet wheels engaged with sun wheel gear shafts; and the inner engaged gear pair as the second set is arranged in the planet carrier and is formed by making multiple planet wheel gear shafts engaged with fixed inner tooth rings. The separate planet carrier combination comprises a front-end planet carrier body and a rear-end planet carrier body. The planet wheels in the outer engaged gear pair and the planet wheel gear shafts in the inner engaged gear pair are locked through screws to form a duplex planetary structure. Rear-end drive wheels are integrally arranged on the sun wheel gear shafts, and the rear-end drive wheels are driven through motor gear shafts, so that the whole reducer is driven to rotate. The planetary reducer is simple in structure and has the beneficial effects of being high in precision, high in rigidity, low in noise and low in backlash.

Description

technical field [0001] The invention relates to the technical field of precision planetary reducers, in particular to a precision double planetary reducer. Background technique [0002] The existing robot articulated arm reducers are mainly RV reducers, NGW planetary reducers, and harmonic reducers. [0003] The main core components in the RV reducer are 1 involute gear, 2 double eccentric shafts, 3 cycloidal wheels, and 4 needle teeth. This new type of reducer has the advantages of large speed ratio, high positioning precision, small size, light weight, high rigidity, etc., so the general transmission accuracy can be achieved within one arc minute. However, the crankshaft and cycloid in the key components of the RV , It is difficult to process needle teeth, the process is difficult to control, and the machine tool for processing this component product is expensive, so the cost of this kind of low-backlash reducer for robots is very high, and Japan has monopolized this tech...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H1/28F16H57/04F16H57/08
CPCF16H1/28F16H57/0479F16H57/08
Inventor 吴鹏贡庆林天琪
Owner WUXI WEIFU CHINA ITAL GEAR
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