Planet roller screw servo device with constant transmission ratio

A planetary roller, fixed transmission ratio technology, applied in the direction of transmission, belt/chain/gear, mechanical equipment, etc., can solve the problem that the fixed transmission ratio cannot always be guaranteed, and achieve strong impact resistance, stable transmission and high efficiency. Effect

Inactive Publication Date: 2013-05-08
BEIJING RES INST OF PRECISE MECHATRONICS CONTROLS +1
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AI Technical Summary

Problems solved by technology

Many planetary roller screw mechanisms have pinions processed at both ends of the rollers. These pinions are of the same size as the roller threads and mesh with the ring gear in the nut to ensure that the rollers and screw shafts are parallel to each other. However, the constant transmission ratio cannot always be guaranteed during operation.

Method used

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  • Planet roller screw servo device with constant transmission ratio

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Embodiment Construction

[0011] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0012] A fixed transmission ratio planetary roller screw servo device, such as figure 1 As shown, when assembling, a number of rollers 3 are evenly arranged in the inner wall of the nut 4, leaving a gap between the rollers 3, and the left and right ends of each roller 3 are respectively the left positioning column 9 and the right positioning column 10 , the left positioning column 9 is provided with a roller gear 8; the left planetary carrier 1 and the right planetary carrier 6 have a screw hole in the middle, and there are evenly arranged positioning holes around the screw hole, and the positioning holes of the left planetary carrier 1 and The left positioning column 9 is matched, and the positioning hole of the right planet carrier 6 is matched with the right positioning column 10; first, the right planet carrier 6 is put on the right end of the rolle...

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Abstract

The invention provides a planet roller screw servo device with constant transmission ratio. The planet roller screw servo device comprises a left planet carrier (1), a screw gear (2), a roller (3), a nut (4), a screw (5), a right planet carrier (6) and a roller gear (8). The planet roller screw servo device has the advantages of lower mechanism rotation inertia, higher torque to inertia ratio and dynamic response capability, simple mechanism, stability in transmission, small transmission gap, low mechanical motion friction noise, and high efficiency. The planet roller screw servo device is capable of realizing constant small lead and high load, speed, acceleration and impact resistance, and can be applied to the environment with working conditions of precise transmission, heavy-load and overload.

Description

technical field [0001] The invention belongs to the field of mechanical devices, and in particular relates to a fixed transmission ratio planetary roller screw servo device. Background technique [0002] Compared with ball screws, due to the increased diameter and number of contact surfaces, roller screws can withstand larger loads and have better impact resistance. At present, many roller screws have appeared and applied to different fields. Many planetary roller screw mechanisms have pinions processed at both ends of the rollers. These pinions are of the same size as the roller threads and mesh with the ring gear in the nut to ensure that the rollers and screw shafts are parallel to each other. However, a constant transmission ratio cannot always be guaranteed during operation. Contents of the invention [0003] The purpose of the present invention is to overcome the defects of the prior art, and provide a roller screw servo device that can ensure a constant transmissi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H25/22F16H25/24
Inventor 徐强王惠娟赵国平黄玉平刘亭
Owner BEIJING RES INST OF PRECISE MECHATRONICS CONTROLS
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