ASSEMBLY FACILITATION APPARATUS AND METHOD

• US 20120066879A1
• Filed: 09/20/2010
• Published: 03/22/2012
• Est. Priority Date: 09/20/2010
• Status: Abandoned Application

• Current Assignee: General Electric Company
• Original Assignee: General Electric Company
• Inventors: DAESCHNER, BERND P.
• Application Number:
  US12/885,613
• Publication Number:
  US 20120066879A1
• Time in Patent Office: Days
• US Class Current: 29/407.05
• CPC Class Codes: B25B 11/02 Assembly jigs
• CPC Class Codes: B25B 27/06 inserting or withdrawing sleeves or bearing races
• CPC Class Codes: B25B 27/062 using screws
• CPC Class Codes: B25B 27/064 fluid driven
• CPC Class Codes: Y10T 29/49771 Quantitative measuring or gauging
• CPC Class Codes: Y10T 29/49826 Assembling or joining
• CPC Class Codes: Y10T 29/49865 by temperature differential [e.g., shrink fit]
• CPC Class Codes: Y10T 29/53087 with signal, scale, illuminator, or optical viewer
• CPC Class Codes: Y10T 29/53439 including provision to utilize thermal expansion of work
• CPC Class Codes: Y10T 29/53961 with work-holder for assembly
• CPC Class Codes: Y10T 29/53974 having means to permit support movement while work is thereon

Abstract

An assembly facilitation apparatus for assembling and seating bearings on a gearbox pinion. The apparatus includes a bearing cup support for holding a bearing for assembly onto a pinion and an arm operatively connected to the bearing cup support. The arm is configured to engage the pinion and seat a bearing on a first portion of the pinion by moving the pinion axially in a first direction relative to the bearing.

Claims

1. An assembly apparatus, the apparatus comprising:

a bearing cup support configured to hold a bearing for assembly onto a pinion, the pinion defining an axis;

an arm operatively connected to the bearing cup support and configured to engage the pinion; and

wherein the arm is operable to seat the bearing on a first portion of the pinion by moving the pinion axially in a first direction relative to the bearing.

2. The assembly apparatus of claim 1, further comprising:

a locking mechanism that is operable to prevent rotation of the pinion while the bearing is being seated.

3. The assembly apparatus of claim 1, further comprising:

a frame operatively connected to the bearing cup support and arm; and

wherein the frame is configured to receive the pinion as well as a bearing housing assembly mounted to a second portion of the pinion.

4. The assembly apparatus of claim 3, wherein the frame includes a clamping mechanism that is selectively operable to prevent movement of the bearing housing assembly relative to the frame so that end play between the pinion and the bearing housing assembly may be measured.

5. The assembly apparatus of claim 4, further comprising:

a lifting mechanism that is operable to move the pinion axially in a second direction opposite the first direction to measure the end play between the pinion and the bearing housing assembly.

6. The assembly apparatus of claim 5, wherein the lifting mechanism is a jack.

7. The assembly apparatus of claim 5, wherein the lifting mechanism is a motorized ram.

8. The assembly apparatus of claim 1, further comprising a mechanism to modify a temperature of the bearing while the bearing is on the apparatus.

9. The assembly apparatus of claim 1, further comprising:

a frame operatively connected to the bearing cup support and arm; and

a plurality of wheels operatively connected to the frame and a braking mechanism coupled to at least one of the plurality of wheels.

10. The assembly apparatus of claim 1, further comprising an attachment mechanism allowing the apparatus to be attached to motive power or another assembly apparatus.

11. An apparatus for assembling and seating bearings on a gearbox pinion, the apparatus comprising:

an upper support surface configured to receive a pinion and support a bearing housing assembly mounted on the pinion, the pinion defining an axis;

a lower support surface configured to hold a bearing for assembly onto the pinion, the lower support surface having a gear lock to prevent rotation of the pinion; and

a movable gantry operatively connected to the upper support surface, the gantry being operable to seat the bearing on the pinion by moving the pinion axially in a first direction relative to the bearing.

12. The apparatus of claim 11, further comprising:

a clamp assembly on the upper support surface, the clamp assembly being operable to prevent axial movement of the bearing housing assembly relative to the upper support surface; and

a lifting assembly proximate the lower support surface, the lifting assembly being operable to move the pinion in a second direction opposite the first direction to measure end play between the pinion and the bearing housing assembly.

13. A method of assembling a gearbox, comprising:

placing a bearing in a bearing cup support;

lowering a pinion through the bearing cup support and into engagement with the bearing, the pinion defining an axis; and

moving the pinion axially in a first direction relative to the bearing to seat the bearing on a first portion of the pinion.

14. The method as defined by claim 13, further comprising locking the pinion in place to prevent its rotation prior to moving the pinion axially in the first direction.

15. The method as defined by claim 13, further comprising heating the bearing to a predetermined temperature prior to placing the bearing in the bearing cup support.

16. The method as defined in claim 13, further comprising modifying a temperature of the bearing in the bearing cup support.

17. The method as defined in claim 13, further comprising signaling a motor to move the pinion axially in the first direction.

18. The method as defined by claim 13, further comprising:

securing a bearing housing assembly to a second portion of the pinion; and

moving the pinion axially in a second direction to measure end play between the pinion and the bearing housing assembly.

19. The method as defined by claim 18, further comprising clamping the bearing housing assembly to prevent movement of the bearing housing assembly and facilitate the measurement of end play.

20. The method as defined by claim 18, further comprising modifying an amount of the end play between the pinion and the bearing housing assembly so that it meets a predetermined value.

21. The method as defined in claim 18, further comprising signaling a motor to move the pinion axially in the second direction.