Major diameter total runout gage for an external spline

Patent metadata

Field	Value
Publication number	US-10274303-B2
Application number	US-201715619898-A
Country	US
Kind code	B2
Filing date	Jun 12, 2017
Priority date	Jun 12, 2017
Publication date	Apr 30, 2019
Grant date	Apr 30, 2019

Abstract

A device and method for measuring dimensional variation of a part, particularly total runout, is provided. The device includes an indicator check body, a clamping device within the indicator check body and an end cap that engages the indicator check body and the clamping device. When the indicator check body and the clamping device are engaged, the device is secured to the part allowing dimensional variations to be measured along the surface of the indicator check body.

First claim

What is claimed is:

1. A device for measuring dimensional variation of a part comprising:
an indicator check body;
a clamping device disposed within the indicator check body; and
an end cap adapted for engagement with the indicator check body and the clamping device,
wherein when the indicator check body and the clamping device are engaged, the device is secured to the part and dimensional variation is measured along at least one surface of the indicator check body.

2. The device according to claim 1 further comprising an anti-rotation member secured to the indicator check body, the anti-rotation member adapted to be secured to the part.

3. The device according to claim 2 , wherein the part is a shaft having external splines, and the anti-rotation member defines a splined inner diameter configured to engage the external splines of the shaft.

4. The device according to claim 1 , wherein the clamping device comprises a collet disposed inside a collet actuator body and the indicator check body.

5. The device according to claim 4 , wherein the collet actuator body defines an inner top surface that is adapted to engage an end portion of the part to locate the device relative to the part.

6. The device according to claim 1 , wherein the end cap defines internal threads, and the indicator check body defines mating external threads.

7. The device according to claim 1 , wherein the end cap defines an inner face that is adapted to engage an end portion of the clamping device.

8. The device according to claim 1 , wherein the end cap further comprises a tool engagement feature.

9. The device according to claim 1 , wherein a fit between the indicator check body and the clamping device is a clearance fit.

10. A gage for measuring dimensional variation of a shaft having splines comprising:
a collet;
a collet actuator disposed around the collet;
an indicator check body disposed around the collet actuator;
an anti-rotation ring secured to a distal end portion of the indicator check body and adapted to engage the splines of the shaft; and
an end cap secured to a proximal end portion of the indicator check body.

11. The gage according to claim 10 , wherein the anti-ring defines a splined inner diameter configured to engage the splines of the shaft.

12. The gage according to claim 10 , wherein the collet actuator body defines an inner top surface that is adapted to engage an end portion of the shaft to locate the gage relative to the shaft.

13. The gage according to claim 1 , wherein the end cap defines internal threads, and the indicator check body defines mating external threads.

14. The gage according to claim 1 , wherein the end cap defines an inner face that is adapted to engage an end portion of the collet actuator.

15. The gage according to claim 1 , wherein the end cap further comprises a tool engagement feature.

16. The gage according to claim 1 , wherein a fit between the indicator check body and the collet actuator is a clearance fit.

17. The gage according to claim 10 , wherein the indicator check body comprises an external flange defining at least one surface against which dimensional variation is measured.

18. A method of measuring dimensional variation of a shaft having splines comprising:
positioning the gage of claim 10 over the shaft and engaging the anti-rotation member with the splines;
tightening the end cap such that the collet clamps onto a major diameter of the splines;
rotating the gage and the shaft; and
placing a probe at a surface of the indicator check body and measuring dimensional variation of the shaft.

19. The method according to claim 18 , wherein the gage is rotated by engaging a tool with the end cap.

20. The method according to claim 18 further comprising the step of engaging an inner top surface of the collet actuator body against an end portion of the shaft to locate the gage relative to the shaft.

Assignees

• Ford Motor Co

Inventors

• Savage Jason Richard
• Kraus Robert Thomas
• Kupiszewski Jay

Classifications

• G01B5/202 Primary

  of gears · CPC title

• G01B3/46

  Plug gauges for internal dimensions with engaging surfaces which are at a fixed distance, although they may be preadjustable · CPC title

• G01M13/027

  Test-benches with force-applying means, e.g. loading of drive shafts along several directions · CPC title

• H01R39/58

  Means structurally associated with the current collector for indicating condition thereof, e.g. for indicating brush wear · CPC title

• G01B3/34

  Ring or other apertured gauges, e.g. "go/no-go" gauge · CPC title