Distance compensating shim for clutch/brake and method of determining same

• US 20040060779A1
• Filed: 10/01/2002
• Published: 04/01/2004
• Est. Priority Date: 10/01/2002
• Status: Abandoned Application

• Current Assignee: White Drive Products, Inc. (Interpump Group SpA)
• Original Assignee: White Drive Products, Inc. (Interpump Group SpA)
• Inventors: Kreger, Charles
• Application Number:
  US10/261,124
• Publication Number:
  US 20040060779A1
• Time in Patent Office: Days
• US Class Current: 188/71.5
• CPC Class Codes: F16D 2250/00 Manufacturing; Assembly
• CPC Class Codes: F16D 2250/0084 Assembly or disassembly
• CPC Class Codes: F16D 2250/0092 Tools or machines for producing linings
• CPC Class Codes: F16D 55/36 Brakes with a plurality of rotating discs all lying side by side

Abstract

A method of manufacturing a selectively engageable friction mechanism such as a brake assembly including series of adjoining hard anodized brake disks having an accumulation of tolerances, the method including preloading the series of brake disks in order to measure for a shim that compensates for the accumulation of tolerances.

Claims

1. An improvement for a method for manufacturing a device having an intermediate assembly stage with a series of non-fixed adjacent components located in a housing,

the method including locating the housing in a tool having the ability to preload the adjacent components in respect to each other,

preloading the adjacent components to a predetermined loading, measuring a distance relative to a dimension of the preloaded adjacent components, comparing said distance to a standard to ascertain the size of a compensation shim, installing said compensating shim in respect to the adjacent components and thereafter completing assembly of the device.

2. The method of claim 1 characterized by the addition of locating a moveable piston of top of the series of adjacent components prior to preloading.

3. The method of claim 1 characterized by the addition of said tool being a hydraulic ram and the additional step of allowing the adjacent components to settle prior to measuring said distance.

4. The method of claim 1 wherein the device has a resilient component and characterized in that said thereafter completing assembly of the device includes location of the resilient component.

5. The method of claim 1 characterized in that the adjacent components are located in the housing of the device neighboring a reaction surface and said measuring the distance relative to the top of the adjacent components includes consideration of the designed distance between such top and the reaction surface.

6. The method of claim 5 characterized in that said measuring the distance relative to the top of the adjacent components includes a coordination surface of the housing.

7. The method of claim 1 characterized in that said measuring the distance relative to the top of the adjacent components includes a coordination surface of the housing.

8. The method of claim 7 characterized in that said tool is a hydraulic ram, said hydraulic ram having a back surface and said measuring the distance relative to the top includes the back surface of said tool.

9. The method of claim 1 characterized in that the adjacent components include a multiplicity of brake discs.

10. The method of claim 1 characterized in that a piston defines the top of the adjacent components.

11. The method of claim 6 characterized in that a piston defines the top of the adjacent components.

12. The method of claim 7 characterized in that said thereafter completing assembly includes locating a spring above the top of the adjacent components and biasing same by closing the housing with an endplate.

13. The method of claim 12 characterized in that said locating a spring includes multiple circumferentially spaced components.

14. The method of claim 1 characterized by a spring opposing said preloading and said predetermined preload being greater that the opposing force of said spring.

15. An improvement for a method for manufacturing a series of individual devices each having an intermediate assembly stage with a series of non-fixed adjacent components located in a housing,

the method including locating the housing of a particular individual device in a tool having the ability to preload the adjacent components in respect to each other,

preloading the adjacent components to a predetermined loading, measuring a distance relative to a dimension of the preloaded adjacent components, comparing said distance to a standard which is uniform for the series of devices to ascertain the size of a compensation shim for that particular individual device, installing said compensating shim in respect to the adjacent components in that particular individual device and thereafter completing assembly of the particular individual device so as to provide uniformity across the series of devices.

16. The method of claim 15 characterized by the addition of said tool being a hydraulic ram and the additional step of allowing the adjacent components to settle prior to measuring said distance.

17. The method of claim 15 wherein the device has a resilient component and characterized in that said thereafter completing assembly of the particular individual device includes location of the resilient component.

18. The method of claim 15 characterized in that the adjacent components are located in the housing of the particular individual device neighboring a reaction surface and said measuring the distance relative to the top of the adjacent components includes consideration of the designed distance between such top and the reaction surface.

19. The method of claim 18 characterized in that said measuring the distance relative to the top of the adjacent components includes a coordination surface of the housing.

20. The method of claim 15 characterized in that said measuring the distance relative to the top of the adjacent components includes a coordination surface of the housing.

21. The method of claim 20 characterized in that said tool is a hydraulic ram, said hydraulic ram having a back surface and said measuring the distance relative to the top includes the back surface of said tool.

22. An improvement for a method for manufacturing a device having an intermediate assembly stage with a series of non-fixed adjacent components located in a housing, the device having a desired level of operation,

the method including locating the housing in a tool having the ability to preload the adjacent components in respect to each other,

preloading the adjacent components to a predetermined loading, measuring a distance relative to a dimension of the preloaded adjacent components, comparing said distance to a series of standards to select the size of a compensation shim appropriate for the desired level of operation, installing said compensating shin in respect to the adjacent components and thereafter completing assembly of the device.

23. The method of claim 22 characterized by the addition of said tool being a hydraulic ram and the additional step of allowing the adjacent components to settle prior to measuring said distance.

24. The method of claim 22 wherein the device has a resilient component and characterized in that said thereafter completing assembly of the device includes location of the resilient component.

25. The method of claim 22 characterized in that the adjacent components are located in the housing of the device neighboring a reaction surface and said measuring the distance relative to the top of the adjacent components includes consideration of the designed distance between such top and the reaction surface.

26. The method of claim 25 characterized in that said measuring the distance relative to the top of the adjacent components includes a coordination surface of the housing.

27. The method of claim 22 characterized in that said measuring the distance relative to the top of the adjacent components includes a coordination surface of the housing.

28. A compensation part for an engagement mechanism having a multiplicity of parts having a compaction distance and a design distance, the improvement of including a shim in the accumulation of parts, which shim has a thickness substantially equal to the difference between said compaction distance and said design distance to compensate for such difference.

29. The compensation part of claim 28 characterized in that a series of differing shims are utilized in a series of engagement mechanisms, which shim individual compensates for the difference between said compaction distance and said design distance in that particular unit.

30. The compensation part of claim 28 characterized in that accumulation of parts includes a piston at the substantial end thereof.

31. The compensation part of claim 30 characterized by the addition of a further compensating part located between said piston and said accumulation of parts.

32. The compensation part of claim 30 characterized in that said compensation shim is on the opposite side of said piston from said accumulation of parts.

33. The compensation part of claim 30 characterized in that said compensation part is on the same side of said piston from said accumulation of parts.

34. A compensation part for a series of individual engagement mechanisms, each individual engagement mechanism having a multiplicity of parts having a compaction distance, there also being a design distance for the series of individual engagement mechanisms, the improvement of including a shim in the accumulation of parts of each particular individual engagement mechanism, which shim has a thickness substantially equal to the difference between said compaction distance for said particular engagement mechanism and said design distance for the series of individual engagement mechanisms to compensate for such difference to provide for uniformity across the series of mechanisms.

35. The compensation part of claim 34 characterized in that accumulation of parts includes a piston at the substantial end thereof.

36. The compensation part of claim 35 characterized by the addition of a further compensating part located between said piston and said accumulation of parts.

37. The compensation part of claim 35 characterized in that said compensation shim is on the opposite side of said piston from said accumulation of parts.

38. A compensation part for an engagement mechanism having a multiplicity of parts having a compaction distance and a known design distance for a given desired level of operation, which level may vary, the improvement of including a shim in the accumulation of parts, which shim has a thickness substantially equal to the difference between said compaction distance and said known design distance to provide for the given desired level of operation.

39. The compensation part of claim 38 characterized in that a series of differing shims are utilized in a series of engagement mechanisms, which shim individual compensates for the difference between said compaction distance and said known design distance for the given desired level of operation for that particular unit.

40. The compensation part of claim 38 characterized in that accumulation of parts includes a piston at the substantial end thereof.

41. The compensation part of claim 40 characterized in that said compensation shim is on the opposite side of said piston from said accumulation of parts.

42. An improvement for a method for manufacturing a brake having an intermediate assembly stage with a series of flat brake disks located in a housing with a reaction surface,

the method including locating the housing in a tool having the ability to preload the top of the brake disks towards the reaction surface,

preloading the brake disks to a predetermined loading, measuring a distance relative to the top of the brake disks and the reaction surface, comparing said distance to a standard to ascertain the size of a compensation shim, installing said compensating shim in respect to the brake disks and thereafter completing assembly of the brake.

43. The method of claim 42 characterized by the addition of locating a moveable piston of top of the series of brake disks prior to preloading.

44. The method of claim 42 characterized by the addition of said tool being a hydraulic ram and the additional step of allowing the brake disks to settle prior to measuring said distance.

45. The method of claim 42 wherein the brake has a resilient component and characterized in that said thereafter completing assembly of the brake includes location of the resilient component.

46. The method of claim 42 characterized in that said measuring the distance relative to the top of the brake disks includes consideration of the designed distance between such top and the reaction surface.

47. The method of claim 46 characterized in that said measuring the distance relative to the top of the brake disks includes a coordination surface of the housing.

48. The method of claim 42 characterized in that said measuring the distance relative to the top of the brake disks includes a coordination surface of the housing.

49. The method of claim 48 characterized in that said tool is a hydraulic ram, said hydraulic ram having a back surface and said measuring the distance relative to the top includes the back surface of said tool.

51. The method of claim 42 characterized in that a piston defines the top of the brake disks.

52. The method of claim 47 characterized in that a piston defines the top of the brake disks.

53. The method of claim 48 characterized in that said thereafter completing assembly includes locating a spring above the top of the brake disks and biasing same by closing the housing with an endplate.

54. The method of claim 53 characterized in that said locating a spring includes multiple circumferentially spaced components.

55. The method of claim 42 characterized by a spring opposing said preloading and said predetermined preload being greater than the opposing force of said spring.

56. The method of claim 42 characterized in that the standard is determined to provide uniformity across an entire series of individual brakes.

57. The method of claim 42 characterized in that the standard is determined to provide a specific operating level to a given individual brake.

50. The method of claim 4221 characterized in that there are no resilient components to be preloaded prior to measurement.

58. An improvement for a method for manufacturing a brake having an intermediate assembly stage with a series of adjacent flat brake disks located in a housing cavity between a movable piston and a housing reaction surface,

the method including locating the housing in a preload tool having the ability to preload the piston towards the reaction surface,

preloading the piston and brake disks between the preload tool and reaction surface to a predetermined loading, measuring a distance relative to the piston and the reaction surface, comparing said distance to a standard to ascertain the size of a compensation shim, installing said compensating shim in respect to the piston and thereafter completing assembly of the brake.

59. The method of claim 58 wherein the brake has a resilient component and characterized in that said thereafter completing assembly of the brake includes location of the resilient component on the opposite side of the piston from the brake discs between the piston and a housing cavity end cover.

60. The method of claim 58 characterized in that said measuring the distance relative to the top of the brake disks includes consideration of the designed distance between such top and the reaction surface.

61. The method of claim 58 characterized in that said measuring the distance relative to the piston includes a coordination surface of the housing.

62. The method of claim 61 characterized in that said tool is a hydraulic ram, said hydraulic ram having a back surface and said measuring the distance relative to the piston includes the back surface of said tool.

63. The method of claim 58 characterized in that the standard is determined to provide uniformity across an entire series of individual brakes.

64. The method of claim 58 characterized in that the standard is determined to provide a specific operating level to a given individual brake.

65. A compensation part for an engagement mechanism having brake discs and an adjacent piston in an accumulation of parts having a compaction distance and a design distance in respect to a reaction surface of a housing cavity containing same,

the improvement of including a shim in the accumulation of parts on the opposite side of the piston from the brake discs, which shim has a thickness substantially equal to the difference between said compaction distance and said design distance to compensate for such.

66. The compensation part of claim 65 characterized in that a series of differing shims are utilized in a series of engagement mechanisms, which shim individually compensates for the difference between said compaction distance and said design distance in that particular unit.

67. The compensation part of claim 65 characterized in that the design distance is uniform across an entire series of individual brakes.

68. The compensating part of claim 65 characterized in that the design distance is determined to provide a specific operating level to a given individual brake.

69. An engagement mechanism, said engagement mechanism having interleaved brake discs and an adjacent piston in an accumulation of parts in a housing surrounding a driveshaft,

said accumulation of parts having a compaction distance in respect to a reaction surface of the housing cavity containing same,

a shim, said shim being in the accumulation of parts on the opposite side of the piston from the brake discs and the reaction surface of the housing cavity, which shim has a thickness substantially equal to the difference between said compaction distance and a design distance to compensate for variances in such compaction distance.

70. The engagement mechanism of claim 69 characterized by the addition of a housing cavity endplate and a spring, and said spring extending between the endplate and said shim.

71. The engagement mechanism of claim 70 characterized in that there are multiple springs.

72. The engagement mechanism of claim 69 characterized by the addition of a housing cavity endplate and a spring and said shim being located between the spring and said endplate.

73. A shim for an engagement mechanism, said shim having a size and said size being color coded.

74. A method of measurement of a quality of a shim, said measurement including an indicator and said indicator having a color to represent the quality of the shim.