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Braking device of the robot arm

A technology of a robot arm and a braking device, applied in the field of braking devices, can solve the problems of collision damage between the robot arm and foreign objects, personnel safety, large spacing between convex teeth, etc.

Active Publication Date: 2022-06-21
TECHMAN ROBOT INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the spacing between the teeth of the ratchet 5 in the prior art is too large. After the robot arm brakes, the coupling pin 12 can move relatively freely between the two teeth, which will cause the shaft 4 to freely rotate the angle between the two teeth.
This free rotation angle, through the enlargement of the robot arm, the end of the robot arm can shake at a considerable angle under the condition of external force or movement. Collision damage or personnel safety issues

Method used

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  • Braking device of the robot arm
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  • Braking device of the robot arm

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Embodiment Construction

[0041] Regarding the technical means and effects adopted by the present invention in order to achieve the above-mentioned objects, preferred embodiments are now given and described below with reference to the accompanying drawings.

[0042] see also figure 1 and figure 2 , figure 1 It is a perspective view of the braking device 20 of the robot arm of the present invention, figure 2 It is a side view of the braking device 20 of the present invention in an unbraking state. The braking device 20 of the robot arm of the present invention includes a ratchet 21, a coupling plate 22, a brake disc 23, and the like. The braking device 20 has a central hole 24 and is sleeved on the rotating shaft 25 of the motor of the robot arm.

[0043] The ratchet wheel 21 of the braking device 20 has a concentric inner gear ring 26 and an outer gear ring 27, and a double-layer gear system is arranged between the inner gear ring 26 and the outer gear ring 27. The double-layer gear system cons...

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Abstract

The invention discloses a braking device of a robot arm. When braking, the coupling plate is released, so that the coupling plate resists the elastic force of the return spring and slides along the guide pin. The rotation speed of the ratchet makes the combination block clamp into the double-layer tooth system with large intervals, and the speed is continuously reduced to a low speed, and then the densely spaced outer peripheral tooth system of the ratchet meshes with the gear tooth system of the combination plate to stop the robot arm.

Description

technical field [0001] The invention relates to a robot arm, in particular to a braking device for preventing the movement of the robot arm when the motor of the robot arm stops rotating. Background technique [0002] Factory automation uses robotic arms to automatically grab workpieces and move back and forth for assembly and manufacturing to improve production efficiency. The robot arm that moves back and forth needs to rely on a stable and effective braking device in addition to the drive module to provide power to stop the robot arm at a predetermined position for operation. [0003] The prior art US publication patent US8410732 uses a motor to rotate the rotating shaft of the robot arm, and sets a braking device to fix the friction ring on the rotating shaft, and the friction ring is covered with a ratchet wheel. In addition, a solenoid valve clutch ratchet is set to block the rotation of the ratchet, and the brake motor rotates to stop the movement of the robot arm. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B25J19/00
CPCB25J19/0004
Inventor 彭国伦姜育钦郭耀庭
Owner TECHMAN ROBOT INC