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Zero gap speed changing mechanism

A speed change mechanism, no gap technology, applied in mechanical equipment, transmission parts, belts/chains/gears, etc., can solve the problems of small driving torque, reduced robot operation accuracy, high price, etc., and achieve the effect of high transmission accuracy

Inactive Publication Date: 2006-01-11
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The rotary joint or driving arm of the robot is usually driven by a motor through a reducer. All kinds of traditional reducers on the market currently have return clearances, and compensation is difficult, which reduces the operating accuracy of the robot.
Although a direct drive motor can be used to directly drive without a reducer, its drive torque is small and the price is very expensive

Method used

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  • Zero gap speed changing mechanism
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] figure 1 Two rolling screw screws (3) and (4) and guide rails (7) with different leads are installed in parallel on the upper axis of the support (1) of a kind of gapless transmission mechanism of the present invention, and the rolling screw screws (3) and ( 4) Install the pre-tightening nuts (2) and (5) respectively, the transmission block (6) installed on the guide rail (7) is connected with the pre-tightening nuts (2) and (5), and the two rolling screws (3) It is coaxial with the axis of (4).

[0015] figure 1 The working principle of the gapless transmission mechanism of the present invention shown is: if the rolling screw (3) turns, the preload nut (2) moves left and right, driving the transmission block (6) and the preload nut (5) along the guide rail (7) Move left and right, and the left and right movement of the pre-tightening nut (5) makes the rolling screw (4) rotate. If the leads of the rolling screw (3) and the rolling screw (4) are different, the rotatio...

Embodiment 2

[0017] figure 2 Two rolling screw screws (3) and (4) and guide rails (7) with different leads are installed in parallel on the upper axis of the support (1) of a kind of gapless transmission mechanism of the present invention, and the rolling screw screws (3) and ( 4) Install the pre-tightening nuts (2) and (5) respectively, the transmission block (6) installed on the guide rail (7) is connected with the pre-tightening nuts (2) and (5), and the two rolling screws (3) And the axis of (4) is different from the axis.

[0018] figure 2 The working principle of the gapless transmission mechanism of the present invention shown is: if the rolling screw (3) turns, the preload nut (2) moves left and right, driving the transmission block (6) and the preload nut (5) along the guide rail (7) Move left and right, and the left and right movement of the pre-tightening nut (5) makes the rolling screw (4) rotate. If the leads of the rolling screw (3) and the rolling screw (4) are differen...

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Abstract

The present invention relates to a gapless speed-changing mechanism, belonging to the field of mechanical transmission. Its structure is characterized by that on its support two rolling screw rods with different leads and guideways are axially parallelly mounted, on said two rolling screw rods respectively are mounted puller nuts, the driving block mounted on the guideway is connected with puller nut, and the axises of two rolling screw rods are coaxial or not coaxial.

Description

technical field [0001] The invention relates to the field of mechanical transmission, in particular to a gapless transmission mechanism. Background technique [0002] Robots are widely used in the field of automatic control and automatic operation. It can realize various movements or operations with high intelligence. At the same time, the movements or operations of robots need to meet the precision requirements. [0003] The rotary joint or driving arm of the robot is usually driven by a motor through a reducer. All kinds of traditional reducers on the market currently have backlash, and compensation is difficult, which reduces the operating accuracy of the robot. Although a direct drive motor can be used to directly drive without a reducer, its drive torque is small and the price is very expensive. Therefore, in robot motion, it has always been a difficult problem to realize the gapless speed change from the driving motor to the rotary joint or the driving arm. At the sa...

Claims

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Application Information

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IPC IPC(8): F16H25/20F16H57/00
Inventor 李为民张建军于庆增
Owner HEBEI UNIV OF TECH
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