Robotic system with reconfigurable end-effector assembly

Patent metadata

Field	Value
Publication number	US-9656394-B2
Application number	US-201615134602-A
Country	US
Kind code	B2
Filing date	Apr 21, 2016
Priority date	May 21, 2015
Publication date	May 23, 2017
Grant date	May 23, 2017

Abstract

A robotic system includes a robotic arm and an end-effector assembly movably coupled to the robotic arm. The end-effector assembly includes a main boom, a frame rail coupled to the main boom, and a plurality of tool branches movably coupled to the frame rail. Each tool branch includes a branch rail movably coupled to the frame rail, a lock coupling the branch rail to the frame rail, and a protrusion coupled to the first lock. The robotic system also includes a configuration tool movably coupled to the robotic arm. The configuration tool includes including a tool body, a gripper coupled to the tool body, and a driver bit extending from the tool body.

First claim

The invention claimed is:

1. A robotic system, comprising:
a robotic arm;
an end-effector assembly movably coupled to the robotic arm, wherein the end-effector assembly includes:
a main boom;
a frame rail coupled to the main boom;
a plurality of tool branches movably coupled to the frame rail, wherein each of the plurality of tool branches includes:
a branch rail movably coupled to the frame rail;
a lock coupling the branch rail to the frame rail, wherein the lock is movable relative to the frame rail between an unlocked position and a locked position so as to fix a position of the branch rail relative to the frame rail;
a protrusion coupled to the lock;

a configuration tool movably coupled to the robotic arm, wherein the configuration tool includes:
a tool body;
a gripper coupled to the tool body, the gripper including a plurality of gripper fingers movable away from and toward each other, wherein the configuration tool is coupled to the end-effector assembly when the gripper fingers grasp the protrusion; and
a driver bit extending from the tool body, wherein the driver bit is aligned with the lock when the gripper fingers grasp the protrusion such that rotating the driver bit causes the lock to move between the locked and unlocked positions.

2. The robotic system of claim 1 , wherein the protrusion is elongated along a protrusion axis, the lock includes a fastener elongated along a fastener axis, and the protrusion is aligned with the fastener such that the fastener axis intersects the protrusion axis.

3. The robotic system of claim 2 , wherein the protrusion axis intersects the fastener axis at a right angle.

4. The robotic system of claim 1 , wherein the branch rail is translatable along the frame rail when the lock is in the unlocked position.

5. The robotic system of claim 4 , wherein the branch rail is rotatable about the frame rail when the lock is in the unlocked position.

6. The robotic system of claim 1 , wherein the lock is a first lock, and the each of the plurality of tool branches further includes a swing arm movably coupled to the branch rail and a second lock coupling the branch rail to the swing arm, and the second lock is movable relative to the branch rail between an unlocked position and a locked position so as to fix a position of the swing arm relative to the branch rail.

7. The robotic system of claim 6 , wherein the protrusion is a first protrusion, and each of the plurality of tool branches includes a second protrusion coupled to the swing arm, and the gripper fingers are configured to grasp the second protrusion in order to couple the configuration tool to the swing arm.

8. The robotic system of claim 7 , wherein the swing arm is translatable along the branch rail when the second lock is in the unlocked position.

9. The robotic system of claim 8 , wherein the branch rail is elongated along a branch rail axis, and the swing arm is rotatable about the branch rail axis when the second lock is in the unlocked position.

10. The robotic system of claim 9 , wherein the first lock is configured as a first clamp, and the second lock is configured as a second clamp.

11. The robotic system of claim 10 , wherein first clamp includes a first clamp base and a first clamp arm movably coupled to the first clamp base, and the second clamp includes a second clamp base and a second clamp arm movably coupled to the second clamp base.

12. The robotic system of claim 11 , wherein the first clamp includes a first fastener movably coupling the first clamp base to the first clamp arm such that rotating the first fastener causes the first clamp arm to move relative to the first clamp base, and the second clamp includes a second fastener movably coupling the second clamp arm to the second clamp base such that rotating the second fastener causes the second clamp arm to move relative to the second clamp base.

13. The robotic system of claim 12 , wherein the driver bit is configured to be rotatably coupled to each of the first and second fasteners.

14. The robotic system of claim 13 , wherein the second lock includes a fastener axis, the fastener axis is orthogonal to the branch rail axis, and the swing arm is rotatable about the fastener axis when the second lock is in the unlocked position.

15. The robotic system of claim 1 , wherein the configuration tool includes a nutrunner coupled to the driver bit such that actuating the nutrunner causes the driver bit to turn.

16. A configuration tool, comprising:
a tool body;
a gripper coupled to the tool body, wherein the gripper includes:
a gripper actuator coupled to the tool body; and
a plurality of gripper fingers movably coupled to the gripper actuator, wherein the gripper fingers are movable away from and toward each other;
a driver bit extending from the tool body, wherein the driver bit is rotatable about a bit axis; and
a tool changer configured to be coupled to a robotic arm, wherein the tool body includes a first end plate and a second end plate opposite the first end plate, the tool changer is coupled to the first end plate via support rails, and the gripper is closer to the second end plate than to the first end plate.

17. The configuration tool of claim 16 , wherein the gripper fingers are movable relative to one another between a first position and a second position, and the gripper fingers are closer to each other in the second position than in the first position.

18. The configuration tool of claim 16 , wherein the gripper fingers are disposed outside the tool body.

Assignees

• Gm Global Tech Operations Llc

Inventors

• Lin Yhu-Tin
• Hwang Dooil

Classifications

• B25J15/0408

  Connections means · CPC title

• B25J15/0616

  with vacuum · CPC title

• B25J11/005

  Manipulators for mechanical processing tasks · CPC title

• Y10S901/41

  Tool · CPC title

• B25J15/0061 Primary

  mounted on a modular gripping structure · CPC title