IP Library › Granted Patent US 11,458,639
Granted Patent B2
US 11,458,639 · App. 16/748,539 · Granted Oct 4, 2022

Systems for changing tools on a gripper apparatus

Inventors: Lei Lei (Tokyo, JP); Yixuan Zhang (Tokyo, JP)
Assignee: MUJIN, INC.
B25J15/0616
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Quick Facts
Patent No.
US 11,458,639
App. No.
16/748,539
Granted
Oct 4, 2022
Kind
B2
Abstract

A tool system for a robotic arm is provided. The tool system includes a tool support structure; a tool structure, coupled to the tool support structure, having at least one structural member; a connector mechanically coupled to the structural member and shaped for engaging the tool support structure; and a control unit mechanically coupled to the at least one structural member and configured to sense and adjust performance of the tool structure based on determining a connection to the tool support structure.

Claims (48)

1. A tool structure for a robotic arm, the tool structure comprising:

at least one structural member;

a connector mechanically coupled to the structural member and shaped for engaging a tool support structure located on the robotic arm, the connector including:

at least one compressed air channel disposed within the connector and positioned for receiving compressed air from the tool support structure;

at least one signal line disposed within the connector and positioned for receiving one or more electrical signals from the tool support structure;

a control unit mechanically coupled to the at least one structural member, and communicatively coupled to the connector, the control unit configured to sense and adjust performance of the tool structure based on determining that the connector is connected to the tool support structures;

a tool head mechanically coupled to the at least one structural member, the tool head being controlled by the control unit through the connector; and

at least one analog drive sensor communicatively coupled to the control unit, the at least one analog drive sensor being positioned and configured to measure performance of the tool head.

2. The structure of claim 1 , wherein the tool structure further comprises a vacuum generator disposed on the at least one structural member, the vacuum generator configured to receive compressed air and generate vacuum pressure in response to compressed air received from the tool support structure.

3. The structure of claim 1 , wherein the tool support structure comprises at least one signal pin configured to provide an electrical signal from the control unit to the at least one signal line of the connector and receive a feedback signal from the tool support structure; and

wherein the control unit is configured to dynamically adjust the electrical signal to the signal pin based on the received feedback signal.

4. The structure of claim 3 , wherein the control unit is configured to dynamically terminate transmission of the electrical signal to the signal pin based on the received feedback signal indicating that the connector has become disconnected from the tool support structure.

5. The structure of claim 1 , wherein the connector comprises a computer readable image code; and

wherein the control unit dynamically adjusts transmission of electrical signals provided by the tool support structure based on detection of the computer readable image code.

6. The structure of claim 1 , wherein the connector broadcasts a short range wireless signal; and

wherein the control unit dynamically adjusts electrical signals provided by the tool support structure based on detection of broadcast short range wireless signal.

7. A tool system for a robotic arm, the tool system comprising:

a tool support structure;

a tool structure, coupled to the tool support structure, including:

at least one structural member;

a connector mechanically coupled to the structural member and shaped for engaging a tool support structure located on the robotic arm;

a control unit mechanically coupled to the at least one structural member, and communicatively coupled to the connector, the control unit configured to sense and adjust performance of the tool structure based on determining that the connector is connected to the tool support structure; and

a tool head mechanically coupled to the structural member, the tool head being controlled by the control unit through the connector,

wherein the tool structure includes at least one analog drive sensor communicatively coupled to the control unit, the at least one analog drive sensor being positioned and configured to measure performance of the tool head.

8. The tool system of claim 7 , the tool structure further comprises a vacuum generator disposed on the at least one structural member, the vacuum generator configured to receive compressed air and generate vacuum pressure in response to compressed air received from the tool support structure.

9. The tool system of claim 7 , wherein the tool support structure comprises at least one signal pin configured to provide an electrical signal from the control unit to a signal line of the connector and receive a feedback signal from the tool support structure; and

wherein the control unit is configured to dynamically adjust the electrical signal to the signal pin based on the received feedback signal.

10. The tool system of claim 9 , wherein the control unit is configured to dynamically terminate transmission of the electrical signal to the signal pin based on the received feedback signal indicating that the connector has become disconnected from the tool support structure.

11. The tool system of claim 7 , wherein the connector comprises a computer readable image code; and

wherein the control unit dynamically adjusts transmission of electrical signals provided by the tool support structure based on detection of the computer readable image code.

12. The tool system of claim 7 , wherein the connector broadcasts a short range wireless signal; and

the control unit dynamically adjusts electrical control signals configured to drive the tool head provided by the tool support structure upon detection of broadcast short range wireless signal.

13. A tool structure for a robotic arm, the tool structure comprising:

at least one structural member;

a connector mechanically coupled to the structural member and shaped for engaging a tool support structure located on the robotic arm, the connector comprising:

at least one compressed air channel disposed within the connector and positioned for receiving compressed air from the tool support structure;

at least one signal line disposed within the connector and positioned for receiving one or more electrical signals from the tool support structure;

a control unit mechanically coupled to the at least one structural member, and communicatively coupled to the connector, the control unit configured to sense and adjust performance of the tool structure;

a tool head mechanically coupled to the at least one structural member, the tool head being controlled by the control unit through the connector, wherein the tool head includes:

a vacuum generator disposed on the at least one structural member, the vacuum generator configured to receive compressed air and generate vacuum pressure in response to compressed air received from the tool support structure; and

at least one analog drive sensor communicatively coupled to the control unit, the at least one analog drive sensor being positioned and configured to measure performance of the tool head.

14. The structure of claim 13 , wherein the tool support structure comprises at least one signal pin configured to communicatively couple to the at least one signal line of the connector to provide an electrical signal from the control unit to the connector and receive a feedback signal from the tool support structure; and

wherein the control unit is configured to dynamically adjust the electrical signal to the signal pin based on the received feedback signal.

15. The structure of claim 14 , wherein the control unit is configured to dynamically terminate transmission of the electrical signal to the signal pin based on the received feedback signal indicating that the connector has become disconnected from the tool support structure.

16. The structure of claim 13 , wherein the connector comprises a computer readable image code; and

wherein the control unit dynamically adjusts transmission of electrical signals provided by the tool support structure based on detection of the computer readable image code.

17. The structure of claim 13 , wherein the connector broadcasts a short range wireless signal; and

the control unit dynamically adjusts electrical control signals configured to drive the tool head provided by the tool support structure upon detection of broadcast short range wireless signal.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 21, 2020
From: LEI, LEI; ZHANG, YIXUAN
To: MUJIN, INC.
Reel/Frame 051575/0645 →
Continuity (2)
Provisional Application 62875880 · Jul 18, 2019
Related Publication 20210016456A1 · Jan 21, 2021
Cited By (1)
US 12,246,438