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Braking device of robot arm

A technology of robot arm and braking device, which is applied in the field of braking device, can solve problems such as the inability to stabilize the robot arm to stop at a predetermined position, personnel safety, damage to the robot arm and foreign objects, etc.

Active Publication Date: 2020-02-21
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 robot arm
  • Braking device of robot arm
  • Braking device of robot arm

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Embodiment Construction

[0041] In order to achieve the above-mentioned purpose, the technical means and effects thereof adopted by the present invention are now given as preferred embodiments, and are described as follows in conjunction with the accompanying drawings.

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

[0043] The ratchet 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...

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Abstract

The invention discloses a braking device of a robot arm. During braking, a combination plate is released to resist the elastic force of a return spring and slide along a guide pin, the combination plate carries a combination block to be close to a ratchet wheel, the combination block makes contact a lower-layer tooth train firstly, the rotating speed of the ratchet wheel is reduced, the combination block is clamped into a large-interval double-layer tooth train, the rotating speed of the ratchet wheel is continuously reduced to a low speed, and then a densely-spaced peripheral tooth train of the ratchet wheel is meshed with a gear tooth train of the combination plate, so that the robot arm is stopped.

Description

technical field [0001] The invention relates to a robot arm, in particular to a braking device for preventing the robot arm from moving 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, in addition to the driving module to provide power, also needs to rely on a stable and effective brake device to stop the robot arm at a predetermined position for operation. [0003] The prior art U.S. Patent No. US8410732 uses a motor to rotate the rotating shaft of the robotic arm, and a brake device is installed to fix the friction ring on the rotating shaft, and the friction ring is covered with a ratchet. In addition, a solenoid valve clutch ratchet is provided to block the rotation of the ratchet and brake the motor to rotate, thereby stopping the movement of t...

Claims

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Application Information

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IPC IPC(8): B25J19/00
CPCB25J19/0004
Inventor 彭国伦姜育钦郭耀庭
Owner TECHMAN ROBOT INC