Five-axis robot

• US 5,142,211 A
• Filed: 04/16/1990
• Issued: 08/25/1992
• Est. Priority Date: 04/16/1990
• Status: Expired due to Term

• Current Assignee: Progressive Technologies, Inc. (Azenta, Inc.)
• Original Assignee: Progressive Blasting Systems, Inc.
• Inventors: Tan, Archie
• Primary Examiner(s): IP, SHIK LUEN PAUL
• Application Number:
  US07/509,945
• Time in Patent Office: 862 Days
• Field of Search: 318/560-646, 364/513, 364/474.02, 364/474.32, 219/121.82, 219/121 LU, 901/3, 901/6, 901/9, 901/12, 901/15-24
• US Class Current: 318/568.1
• CPC Class Codes: B25J 9/026 Gantry-type
• CPC Class Codes: Y10S 700/90 Special robot structural element

Abstract

A five-axis robot mechanism for moving an operative device along three rectilinear axes and two rotational axis including a carriage movable along one rectilinear axis, a cart movable on the carraige and a mast assembly having two elongated members movable along a third rectilinear axis. The two elongated members are rotatable together one rotatable with respect to the other to produce movement of the operative device on two rotatable axes. The carriage, cart and mast assemblies are uniquely arranged with respect to each other produce the five-axis desired movement of the operative device.

Claims

1. A five-axis robot having means for supporting a device and means for controlling the movement of said device to position said device for performing an operation on a workpiece comprising:

an elongate carriage;

means for supporting said carriage for movement on a horizontal plane;

a first actuating means for moving said carriage on said plane along a first rectilinear axis;

a cart assembly operatively associated with said carriage for longitudinal movement on said carriage along said plane and a second rectilinear axis;

second actuating means for moving said cart assembly along said second rectilinear axis;

elongated support means extending upwardly along a third rectilinear axis perpendicular to said horizontal plane;

an elongated mast member extending upwardly along said third rectilinear axis parallel to said guide means and substantially perpendicular to said first and second rectilinear axis;

guide track means on said support means for movably supporting said mast assembly on said support means along said third rectilinear axis;

third actuating means for causing said mast assembly to move upwardly and/or downwardly along said third rectilinear axis;

said elongated mast assembly including a first elongated member having an elongated central passageway extending substantially the entire length thereof;

a second elongated member located in said passageway and extending substantially throughout the length of said passageway;

a fourth actuating means for rotating said second elongated member within said passageway;

said mast assembly including fifth actuating means for rotating said first elongated member on a first rotational axis located about said third rectilinear axis;

a rotatable support means for said device supported at the lower ends of said first and second elongated members;

translating means operatively connecting said second elongated member and said support means for translating the rotatable motion of said second elongated member about said third axis to a rotatable motion of said rotatable support means and thus said device on a second rotational axis substantially perpendicular to said second axis; and

means for controlling said first, second, third, fourth and fifth actuating means whereby said device can be moved on five axes including three rectilinear axes and two rotational axes as it performs an operation on a workpiece.

2. The robot of claim 1 in which the said elongated support means is rigidly mounted on a base member from which said elongated support member extends upwardly and said elongated mast assembly is parallel to said support means;

a guide member extending through an opening in said base member and having a central opening receiving said first elongated member;

connecting means secured to the upper part of said mast assembly and extending to said support means, said connecting means having means engaging said guide track means for slidably supporting the first elongated member.

3. The robot of claim 2 in which the third actuating means includes a nut mounted on said connecting means;

a screw located between said elongated support means and said mast assembly and engaging said nut; and

a first motor for driving said screw whereby said mast assembly moves upwardly and/or downwardly in response to the operation of said first motor.

4. The robot of claim 3 in which the fourth actuating means includes a second motor supported at the top end of said second elongated member for rotatably driving said second elongated member.

5. The robot of claim 4 in which the fifth actuating means includes means for supporting a third motor on said connecting means;

said third motor being operatively connected to said first elongated member for rotating the same;

said entire mast including said first and second elongated members and said second and third motors being movable together upwardly and/or downwardly by said third actuating means.

6. The robot of claim 2 in which the elongated support means includes two spaced towers, screw support means and nut support means spanning said towers and secured to the sides thereof closest to said mast assembly;

a screw mounted on said screw support means;

a nut supported on said nut support means;

said screw and nut thereby being located between said towers and said mast assembly;

a motor support means spanning and mounted on said towers on the opposite sides thereof as said screw support means and nut support means and supporting a motor;

said screw, nut, and motor being operatively connected together to form said third actuating means for causing said mast assembly to move upwardly and/or downwardly along said third rectilinear axis.

7. The robot of claim 1 in which the said elongated support means is rigidly mounted on a base member from which said elongated support member extends upwardly and said elongated mast assembly is parallel to said support means;

a guide member extending through an opening in said base member and having a central opening receiving said first elongated member;

connecting means secured to the upper part of said mast assembly and extending to said support means, said connecting means having means engaging said guide track means for slidably supporting the first elongated member;

said third actuating means including a nut mounted on said connecting means;

a screw located between said elongated support means and said mast assembly and engaging said nut;

a first motor for driving said screw whereby said mast assembly moves upwardly and/or downwardly in response to the operation of said first motor;

said fourth actuating means including a second motor supported at the top end of said second elongated member for rotatably driving said second elongated member;

said fifth actuating means including means for supporting a third motor on said connecting means;

said third motor being operatively connected to said first elongated member for rotating the same;

said entire mast including said first and second elongated members and said second and third motors being movable together upwardly and/or downwardly by said third actuating means.

8. The robot of claim 6 in which said fourth actuating means includes a motor supported at the top end of said second elongated member for rotatably driving said second elongated member;

said fifth actuating means including means for supporting a motor on said connecting means;

said motor on said connecting means being operatively connected to said first elongated member for rotating the same;

said entire mast including said first and second elongated members and said motors being movable together upwardly and/or downwardly by said third actuating means.

9. The robot of claim 2 in which the elongated support means includes two spaced towers, screw support means and nut support means spanning said towers and secured to the sides thereof closest to said mast assembly;

a screw mounted on said screw support means;

a nut supported on said nut support means;

said screw and nut thereby being located between said towers and said mast assembly;

a motor support means spanning and mounted on said towers on the opposite side of said screw support means and nut support means;

a motor supported on said motor support means;

said screw, nut, and motor being operatively connected together to form said first actuating means for causing said mast assembly to move perpendicular to said horizontal plane along said third rectilinear axis.

10. A five-axis robot having means for supporting a device and means for controlling the movement of said device to position said device for performing an operation located in a closed compartment having at least two sides comprising:

an elongated carriage spanning the distance between said two sides;

means for supporting said carriage for movement along said sides substantially on a horizontal plane;

first actuating means for moving said carriage on said plane along a first rectilinear axis;

cover means secured to the opposite longitudinal edges of said carriage for continuously forming a closed ceiling for said compartment as said carriage moves;

a cart assembly operatively associated with said carriage for longitudinal movement on said carriage along said plane and a second rectilinear axis;

second actuating means for moving said cart assembly along said second rectilinear axis;

elongated support means extending upwardly from said cart along a third rectilinear axis perpendicular to said horizontal plane;

an elongated mast member extending upwardly along said third rectilinear axis parallel to said guide means and substantially perpendicular to said first and second rectilinear axis;

guide track means on said support means for movably supporting said mast assembly on said support means along said third rectilinear axis;

third actuating means for causing said mast assembly to move upwardly and/or downwardly along aid third rectilinear axis;

said elongated mast assembly including a first elongated member having an elongated central passageway extending substantially the entire length thereof;

second elongated member located in said passageway and extending substantially throughout the length of said passageway;

a fourth actuating means for rotating said second elongated member within said passageway;

said mast assembly including fifth actuating means for rotating said first elongated member on a first rotational axis located about said third rectilinear axis;

a rotatable support means for said device supported at the lower ends of said first and second elongated members;

translating means operatively connecting said second elongated member and said support means for translating the rotatable motion of said second elongated member about said third axis to a rotatable motion of said rotatable support means and thus said device on a second rotational axis substantially perpendicular to said second axis; and

means for controlling said first, second, third, fourth and fifth actuating means whereby said device can be moved on five axes including three rectilinear axes and two rotational axes as it performs an operation on a workpiece.

11. The robot of claim 10 in which the said elongated support means is rigidly mounted on a base member from which said elongated support member extends upwardly and said elongated mast assembly is parallel to said support means;

a guide member extending through an opening in said base member and having a central opening receiving said first elongated member;

connecting means secured to the upper part of said mast assembly and extending to said support means, said connecting means having means engaging said guide track means for slidably supporting the first elongated member.

12. The robot of claim 11 in which the third actuating means includes a nut mounted on said connecting means;

a screw located between said elongated support means and said mast assembly and engaging said nut; and

a first motor for driving said screw whereby said mast assembly moves upwardly and/or downwardly in response to the operation of said first motor.

13. The robot of claim 12 in which the fourth actuating means includes a second motor supported at the top end of said second elongated member for rotatably driving said second elongated member.

14. The robot of claim 13 in which the fifth actuating means includes means for supporting a third motor on said connecting means;

said third motor being operatively connected to said first elongated member for rotating the same;

said entire mast including said first and second elongated members and said second and third motors being movable together upwardly and/or downwardly by said third actuating means.

15. The robot of claim 11 in which the elongated support means includes two spaced towers, screw support means and nut support means spanning said towers and secured to the sides thereof closest to said mast assembly;

a screw mounted on said screw support means;

a nut supported on said nut support means;

said screw and nut thereby being located between said towers and said mast assembly;

a motor support means spanning and mounted on said towers on the opposite sides thereof as said screw support means and nut support means and supporting a motor;

said screw, nut, and motor being operatively connected together to form said third actuating means for causing said mast assembly to move upwardly and/or downwardly along said third rectilinear axis.

16. The robot of claim 10 in which the said elongated support means is rigidly mounted on a base member from which said elongated support member extends upwardly and said elongated mast assembly is parallel to said support means;

a guide member extending through an opening in said base member and having a central opening receiving said first elongated member;

connecting means secured to the upper part of said mast assembly and extending to said support means, said connecting means having means engaging said guide track means for slidably supporting the first elongated member;

said third actuating means including a nut mounted on said connecting means;

a screw located between said elongated support means and said mast assembly and engaging said nut;

a first motor for driving said screw whereby said mast assembly moves upwardly and/or downwardly in response to the operation of said first motor;

said fourth actuating means including a second motor supported at the top end of said second elongated member for rotatably driving said second elongated member;

said fifth actuating means including means for supporting a third motor on said connecting means;

said third motor being operatively connected to said first elongated member for rotating the same;

said entire mast including said first and second elongated members and said second and third motors being movable together upwardly and/or downwardly by said third actuating means.

17. The robot of claim 15 in which said fourth actuating means includes a motor supported at the top end of said second elongated member for rotatably driving said second elongated member;

said fifth actuating means includes means for supporting a motor on said connecting means;

said motor on said connecting means being operatively connected to said first elongated member for rotating the same;

said entire mast including said first and second elongated members and said motors being movable together upwardly and/or downwardly by said third actuating means.

18. A robot having means for supporting a device and means for controlling movement of said device to position said device for performing an operation on a workpiece comprising:

elongated support means extending along a rectilinear axis perpendicular to a given plane;

an elongated mast member extending upwardly along said rectilinear axis parallel to said guide means and substantially perpendicular to said given plane;

guide track means on said support means for movably supporting said mast assembly on said support means along said rectilinear axis;

first actuating means for causing said mast assembly to move in either direction along said rectilinear axis;

said elongated mast assembly including a first elongated member having an elongated central passageway extending substantially the entire length thereof;

a second elongated member located in said passageway and extending substantially throughout the length of said passageway;

a second actuating means for rotating said second elongated member within said passageway;

said mast assembly including third actuating means for rotating said first and second elongated members together on a first rotational axis located about said rectilinear axis;

a rotatable support means for said device supported at one of the ends of said first and second elongated members;

translating means operatively connecting said second elongated member and said support means for translating the rotatable motion of said second elongated member about said rectilinear axis to a rotatable motion of said rotatable support means and thus said device on a second rotational axis substantially perpendicular to said rectilinear axis; and

means for controlling said first, second and third, actuating means whereby said device can be moved on three axes including one rectilinear axes and two rotational axes as it performs an operation on a workpiece.

19. The robot of claim 18 in which a connecting means is provided secured to said mast assembly;

said connecting means having means engaging said guide track means for slidably supporting the first elongated member;

said first actuating means including a nut mounted on said connecting means;

a screw located between said elongated support means and said mast assembly and engaging said nut; and

a first motor for driving said screw whereby said mast assembly moves in a direction perpendicular to said given plane in response to the operation of said motor.

20. The robot of claim 19 in which the second actuating means includes a second motor supported at the top end of said second elongated member for rotatably driving said second elongated member.

21. The robot of claim 20 in which the third actuating means includes means for supporting a third motor on said connecting means;

said third motor being operatively connected to said first elongated member for rotating the same;

said entire mast including said first and second elongated members and said second and third motors being movable together in a direction perpendicular to said given plane by said first actuating means.