MANUFACTURING ASSEMBLY LINE AND A METHOD OF DESIGNING A MANUFACTURING ASSEMBLY LINE

• US 20050044700A1
• Filed: 10/21/2004
• Published: 03/03/2005
• Est. Priority Date: 09/24/2002
• Status: Abandoned Application

• Current Assignee: Ford Motor Company
• Original Assignee: Ford Motor Company
• Inventors: Ghuman, Abid, Rosso, Marsha, Sanborn, Kirk, Lowe, James
• Application Number:
  US10/904,064
• Publication Number:
  US 20050044700A1
• Time in Patent Office: Days
• US Class Current: 29/791
• CPC Class Codes: B23K 2101/006 Vehicles
• CPC Class Codes: B23K 37/0426 Fixtures for other work
• CPC Class Codes: B23K 37/0452 Orientable fixtures B23K37/0461 takes precedence
• CPC Class Codes: B23P 21/004 the units passing two or more work-stations whilst being composed
• CPC Class Codes: B23P 2700/50 Other automobile vehicle parts, i.e. manufactured in assembly lines
• CPC Class Codes: B23Q 1/52 a single rotating pair
• CPC Class Codes: B23Q 1/5462 with one supplementary sliding pair
• CPC Class Codes: B23Q 16/001 Stops, cams, or holders therefor
• CPC Class Codes: B25J 17/0216 comprising a stewart mechanism
• CPC Class Codes: B62D 65/02 Joining sub-units or components to, or positioning sub-units or components with respect to, body shell or other sub-units or components
• CPC Class Codes: B62D 65/18 Transportation, conveyor or haulage systems specially adapted for motor vehicle or trailer assembly lines conveyors and haulage in general B65G
• CPC Class Codes: G05B 19/41805 characterised by assembly
• CPC Class Codes: G05B 2219/31044 Assembly of modular products, variant configurability
• CPC Class Codes: Y02P 90/02 Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
• CPC Class Codes: Y10T 29/49828 Progressively advancing of work assembly station or assembled portion of work
• CPC Class Codes: Y10T 29/534 Multiple station assembly or disassembly apparatus
• CPC Class Codes: Y10T 29/53417 Means to fasten work parts together

Abstract

A method of designing a manufacturing process line. A process is identified as a set of discrete steps. A subset of steps is assigned to one of a plurality of standardized work cells. The work cells include a standardized workpiece presenter and a standardized processing tool. Additional subsets of discrete steps are assigned to a standardized work cell until the design for the manufacturing process is completed.

Claims

1. A method of designing a manufacturing process line, comprising:

identifying a manufacturing process comprising a set of discrete steps to be performed on at least one workpiece;

identifying a plurality of standardized work cells, each work cell having at least one standardized workpiece presenter that supports the workpiece in a predefined spacial orientation, and at least one standardized processing tool;

selecting a subset of the set of discrete steps to be performed at a work cell and selecting the standardized work cell for performing the subset of steps; and

repeating the selecting step for additional subsets of steps to the plurality of work cells until each of the discrete steps is assigned to a corresponding work cell chosen from the plurality of work cells.

2. The method of claim 1 wherein a plurality of manufacturing process lines are identified as templates.

3. The method of claim 2 wherein the manufacturing process line is completely designed by specifying a plurality of templates in a defined sequence.

4. The method of claim 1 wherein the workpiece presenter and processing tool are interrelated with an integrated standard control system.

5. The method of claim 1 wherein a first work cell comprises the standardized workpiece presenter comprising a table top fixture having a tilt platform and the predefined processing tool is selected from the group consisting essentially of a welder and a gripper.

6. The method of claim 5 wherein a second work cell comprises the standardized workpiece presenter comprising a hexapod manipulator having six computer controlled ball screws and the processing tool is selected from the group consisting essentially of a pedestal welder, a sealant dispensing unit, and a projection weld gun.

7. The method of claim 6 wherein a third work cell comprises the standardized workpiece presenter comprising a pedestal welding work cell having a robotic arm for picking up parts from a fixture and moving the parts to the processing tool selected from the group consisting essentially of a pedestal welder, a sealant dispensing unit, and a projection weld gun.

8. The method of claim 7 wherein a fourth work cell comprises the standardized workpiece presenter comprising a dual station having a seventh axis slide and the processing tool is a welding gun.

9. The method of claim 8 wherein a fifth work cell comprises the standardized workpiece presenter comprising a multiple sided trunnion fixture having a plurality of fixtures for a plurality of workpieces that are rotated about a horizontal axis and the processing tool is selected from the group consisting essentially of a welding robot and a sealant applicator.

10. The method of claim 9 wherein a sixth work cell comprises the standardized workpiece presenter comprising a multiple sided turntable fixture having a plurality of fixtures for a plurality of workpieces that are rotated about vertical axis and the processing tool is a robotic welder.

11. The method of claim 10 wherein a seventh work cell comprises the standardized workpiece presenter comprising an indexing shuttle having at least two independently controlled fixtures for at least two workpieces and the processing tool is selected from the group consisting essentially of a welding robot and a sealant applicator.

12. The method of claim 11 wherein an eighth work cell comprises the standardized workpiece presenter comprising a roller bed for supporting a pallet that supports a fixture for a workpiece and the processing tool is a laser welding robot.

13. The method of claim 12 wherein the ninth work cell comprises the standardized workpiece presenter comprising a fixture in a press welding fixture and the processing tool is a press welding fixture.

14. The method of claim 13 wherein a tenth work cell comprises the standardized workpiece presenter comprising a fixture in a tool, and the processing tool is selected from the group consisting essentially of a hemming tool, a clinching tool, and a piercing tool.

15. The method of claim 14 wherein an eleventh work cell comprises the standardized workpiece presenter comprising a sliding tool plate on an indexing shuttle and the processing tool is a plurality of tools selected from the group consisting essentially of a welding robot, a material handling robot, a sealant dispenser, and an adhesive dispenser.

16. The method of claim 15 wherein a twelfth work cell comprises the standardized workpiece presenter comprising a pallet that is received on a roller bed and the processing tool is a plurality of tools selected from the group consisting essentially of a welding robot, a material handling robot, a sealant dispenser, and an adhesive dispenser.

17. The method of claim 16 wherein a thirteenth work cell comprises the standardized workpiece presenter comprising a pallet and the processing tool is a vision work cell having optical measuring devices.

18. The method of claim 17 wherein a fourteenth work cell comprises the standardized workpiece presenter comprising a shuttling tooling plate mounted on a shuttle drive and the processing tool is a sealant applicator.

19. The method of claim 18 wherein a fifteenth work cell comprises the standardized workpiece presenter comprising a pallet that is received on a roller bed and the processing tool is a welding robot.

20. The method of claim 19 wherein a sixteenth work cell comprises the standardized workpiece presenter comprising a framer for joining a vehicle body side to an underbody that is mounted on a pallet on a roller bed and the processing tool is a welding gate fixture.

21. A method of designing a manufacturing process line for making an assembly from a plurality of workpieces, the method comprising:

identifying a manufacturing process comprising a set of discrete manufacturing steps to be performed on a workpiece;

identifying a work cell set having a limited number of standardized work cells, each standardized work cell having a different configuration;

selecting a subset of the set of discrete manufacturing steps to be performed;

selecting a standardized work cell from the work cell set to perform the subset of the set of discrete manufacturing steps; and

repeating the selecting step for additional subsets of steps until all of the discrete steps are assigned to a standardized work cell in the work cell set.

22. The method of claim 21 wherein the work cell set includes sixteen standardized work cells each having a different configuration.

23. The method of claim 21 wherein each standardized work cell includes at least one standardized workpiece presenter that supports the workpiece and at least one standardized processing tool.

24. The method of claim 23 wherein the workpiece presenter includes a tooling plate adapted to fixture a first workpiece and a second workpiece differing from the first workpiece.

25. The method of claim 24 wherein at least one work cell in the work cell set is adapted to select a first standard processing tool to perform an operation on the first workpiece and select a second operating tool to perform an operation on the second workpiece.

26. The method of claim 21 wherein the work cell set includes a storage station adapted to couple at least two standardized work cells.

27. The method of claim 21 wherein the work cell set includes a transfer station adapted to move the assembly between at least two standardized work cells.

28. The method of claim 21 wherein the manufacturing process line is flexible so as to produce a plurality of assemblies having different configurations.

29. The method of claim 21 wherein the assembly is a vehicle body.

30. The method of claim 21 wherein the assembly is an automotive vehicle.

31. A manufacturing process line for making an assembly from a plurality of workpieces, the manufacturing process line comprising:

a plurality of standardized work cells, each work cell having at least one standardized workpiece presenter that supports the workpiece in a predefined spacial orientation, and at least one standardized processing tool; and

a plurality of templates arranged in a defined sequence such that a portion of the assembly is formed at each template, each template having a plurality of standardized work cells.

32. The manufacturing process line of claim 31, wherein the plurality of work cells consists of sixteen unique work cells.

33. The manufacturing process line of claim 32 wherein the sixteen unique work cells comprise:

a first work cell wherein the standardized workpiece presenter includes a table top fixture having a tilt platform and the standardized processing tool is selected from the group consisting essentially of a welder and a gripper;

a second work cell wherein the standardized workpiece presenter includes a hexapod manipulator having six computer controlled ball screws and the standardized processing tool is selected from the group consisting essentially of a pedestal welder, a sealant dispensing unit, and a projection weld gun;

a third work cell wherein the standardized workpiece presenter includes a robotic arm for picking up and moving parts and the standardized processing tool is selected from the group consisting essentially of a pedestal welder, a sealant dispensing unit, and a projection weld gun;

a fourth work cell wherein the standardized workpiece presenter includes a seventh axis slide and the standardized processing tool is a welding gun;

a fifth work cell wherein the standardized workpiece presenter includes a multiple sided trunnion fixture adapted to rotate about a horizontal axis and having a plurality of fixtures for receiving a plurality of workpieces and the standardized processing tool is selected from the group consisting essentially of a welding robot and a sealant applicator;

a sixth work cell wherein the standardized workpiece presenter includes a multiple sided turntable fixture adapted to rotate about a vertical axis and having a plurality of fixtures for a plurality of workpieces and the standardized processing tool is a robotic welder;

a seventh work cell wherein the standardized workpiece presenter includes an indexing shuttle having at least two independently controlled fixtures for at least two workpieces and the standardized processing tool is selected from the group consisting essentially of a welding robot and a sealant applicator;

an eighth work cell wherein the standardized workpiece presenter includes a roller bed for supporting a pallet that supports a fixture for a workpiece and the standardized processing tool is a laser welding robot;

a ninth work cell wherein the standardized workpiece presenter includes a press welding fixture and the standardized processing tool is a fixture in the press welding fixture;

a tenth work cell wherein the standardized workpiece presenter includes a fixture in a tool and the standardized processing tool is selected from the group consisting essentially of a hemming tool, a clinching tool, and a piercing tool;

an eleventh work cell wherein the standardized workpiece presenter includes an indexing shuttle, a sliding tool plate disposed on the indexing shuttle, and the standardized processing tool is selected from the group consisting essentially of a welding robot, a material handling robot, a sealant dispenser, and an adhesive dispenser;

a twelfth work cell wherein the standardized workpiece presenter includes a pallet that is received on a roller bed and the standardized processing tool is selected from the group consisting essentially of a welding robot, a material handling robot, a sealant dispenser, and an adhesive dispenser;

a thirteenth work cell wherein the standardized workpiece presenter includes a pallet and the standardized processing tool is an optical measuring device;

a fourteenth work cell wherein the standardized workpiece presenter includes a shuttling tooling plate mounted on a shuttle drive and the standardized processing tool is a sealant applicator;

a fifteenth work cell wherein the standardized workpiece presenter includes a pallet that is received on a roller bed and the standardized processing tool is a welding robot; and

a sixteenth work cell wherein the standardized workpiece presenter includes a framer for joining a vehicle body side to an underbody that is mounted on a pallet on a roller bed and the standardized processing tool is a welding gate fixture.

34. The manufacturing process line of claim 31 wherein the assembly is a vehicle body.

35. The manufacturing process line of claim 31 wherein the assembly is an automotive vehicle.

36. The manufacturing process line of claim 31 further comprising a storage station adapted to couple at least two standardized work cells.

37. The manufacturing process line of claim 31 further comprising a transfer station adapted to move the assembly between at least two standardized work cells.