Robot, control method therefor, method for manufacturing article using robot, and storage medium

Patent metadata

Field	Value
Publication number	US-12583105-B2
Application number	US-202218048802-A
Country	US
Kind code	B2
Filing date	Oct 21, 2022
Priority date	Oct 29, 2021
Publication date	Mar 24, 2026
Grant date	Mar 24, 2026

Abstract

A robot includes a first link, a driving device configured to cause the first link to rotate, a transmission member configured to transmit a rotation of the driving device, a first stopper provided on the first link, and a second stopper provided on the transmission member, wherein the first stopper and the second stopper are brought into contact with each other by a relative movement between the first link and the transmission member.

First claim

What is claimed is:

1 . A robot comprising,
a first link having a first face and a second face; a driving device configured to cause the first link to rotate about an axis substantially perpendicular to the first face and the second face; a transmission member configured to transmit a rotation of the driving device, the transmission member having a third face substantially parallel to the second face of the first link; a torque sensor provided between the third face of the transmission member and the second face of the first link; a first stopper extending from the second face of the first link; and a second stopper provided on the transmission member, wherein the first stopper and the second stopper are brought into contact with each other by a relative movement between the first link and the transmission member.

2 . The robot according to claim 1 , wherein the second stopper is provided with a space in which the first stopper is placed, and the first stopper is placed in the space with a predetermined clearance, and
wherein rotation by the transmission member of the driving device moves the first stopper around at least a portion of a circumference of the driving device.

3 . The robot according to claim 2 , wherein the space is an opening configured to surround an entire periphery of the first stopper.

4 . The robot according to claim 2 , wherein;
the first stopper is provided with a boss, and with the first stopper placed in the space, the boss is positioned on a side of the opening opposite to the first link.

5 . The robot according to claim 1 , wherein the first stopper is provided with a space in which the second stopper is placed, and the second stopper is placed in the space with a predetermined clearance.

6 . The robot according to claim 5 , wherein the space is a void.

7 . The robot according to claim 1 , wherein one of the first stopper and the second stopper is detachably mounted.

8 . The robot according to claim 7 , wherein one of the first stopper and the second stopper is positionally adjustable.

9 . The robot according to claim 7 , wherein one of the first link and the transmission member is provided with a mounting portion to mount one of the first stopper and the second stopper.

10 . The robot according to claim 9 , wherein one of the first link and the transmission member is provided with a plurality of mounting portions.

11 . The robot according to claim 7 , wherein one of the first stopper and the second stopper is detachably mounted with a bolt.

12 . The robot according to claim 7 , wherein one of the first stopper and the second stopper is positioned with a pin.

13 . The robot according to claim 1 ,
wherein the torque sensor is divided into at least two parts, and wherein the second stopper is provided between the parts.

14 . The robot according to claim 13 , wherein the second stopper is provided with a groove portion in which the first stopper is placed with a predetermined clearance.

15 . The robot according to claim 1 , further comprising a second link on which the driving device is provided,
wherein the second link is provided with a third stopper to be brought into contact with one of the first stopper and the second stopper by a relative movement between the first link and the second link.

16 . The robot according to claim 15 , wherein when one of the first stopper and the second stopper is brought into contact with the third stopper with a predetermined force, the first stopper and the second stopper are brought into contact with each other.

17 . The robot according to claim 16 , wherein in a case where the first link and the transmission member are rotated in a state where a force smaller than the predetermined force acts on each of the first link and the transmission member, the first stopper and the second stopper are not brought into contact with each other.

18 . The robot according to claim 15 ,
wherein the second link is provided with a sliding portion, and wherein the second link includes a member configured to slide along the sliding portion, move with the first link in a state where the member is in contact with one of the first stopper and the second stopper, and to be brought into contact with the third stopper.

19 . The robot according to claim 18 , wherein the member is a movable component.

20 . The robot according to claim 1 ,
wherein the driving device includes a motor and a decelerator configured to decelerate a rotation of the motor, and wherein the transmission member is connected to an output shaft of the decelerator.

21 . A method for manufacturing an article using the robot according to claim 1 .

22 . A control method for the robot according to claim 1 , comprising controlling the driving device using a control device.

23 . A non-transitory computer-readable storage medium storing a control program for causing a computer to execute the control method according to claim 22 .

Assignees

• Canon Kk

Inventors

• Fukuda Junichi
• Nakajima Yohji
• Ogata Masaru
• Asano Hidetada

Classifications

• B25J9/101

  using limit-switches, -stops · CPC title

• B25J13/085

  Force or torque sensors (B25J13/082, B25J13/084 take precedence) · CPC title

• G05B2219/37624

  Detect collision, blocking by measuring change of velocity or torque · CPC title

• G05B2219/40599

  Force, torque sensor integrated in joint · CPC title

• G05B2219/40552

  Joint limit · CPC title