Fixture For Checking A Bevel Gear Product And Related Method

• US 20190310073A1
• Filed: 06/24/2019
• Published: 10/10/2019
• Est. Priority Date: 03/06/2018
• Status: Active Grant

• Current Assignee: American AXLE & Manufacturing Incorporated (American AXLE & Manufacturing Holdings Incorporated)
• Original Assignee: American AXLE & Manufacturing Incorporated (American AXLE & Manufacturing Holdings Incorporated)
• Inventors: SKINNER, Sean M., MARTZ, James C., BEIER, Jeff, PEREZ, Ralph
• Granted Patent: US 10,852,124 B2
• Time in Patent Office: Days
• CPC Class Codes: G01B 11/06 for measuring thickness ; e.g. of sheet material thickness measurement by thermal means G01B21/085
• CPC Class Codes: G01B 11/22 for measuring depth
• CPC Class Codes: G01B 11/2416 of gears optical projection profile comparators G01B9/08
• CPC Class Codes: G01B 11/245 using a plurality of fixed, simultaneously operating transducers G01B11/2408 - G01B11/2425, G01B11/255 take precedence
• CPC Class Codes: G01B 11/26 for measuring angles or tapers; for testing the alignment of axes

Abstract

A fixture for gauging a bevel gear product that is received on a mount and rotated relative to a base while a plurality of measuring lasers and a rotational position sensor are operated. Data from the measuring lasers and the rotational position sensor are employed by a controller to generate one or more data sets. The data set(s) include dimensional information on the bevel gear product as a function of a rotational position of the bevel gear product about the mount axis. Various dimensions of the bevel gear product are gauged by the controller based on information in the data set(s).

Claims

1. A fixture for performing a gauging operation on a bevel gear product having a back face, a through bore, a thickness, a counter bore, a face angle, a back angle and an outside diameter, the fixture comprising:

a base;

a mount that is coupled to the base for rotation about a mount axis, the mount including a plurality of feet and a plurality of fingers, the feet cooperating to establish a predetermined plane, the fingers being movable along the mount axis relative to the feet, the fingers being configured to center the bevel gear product about the mount axis and to permit the back face of the bevel gear product to rest against the feet so that the back face is co-planar with the predetermined plane;

a rotational position sensor having a first sensor portion, which is fixedly coupled to the base, and a second sensor portion that is coupled to the mount for rotation therewith, the rotational position sensor sensing a rotational position of the mount relative to the base and responsively generating a rotational position sensor signal;

a plurality of measuring lasers coupled to the base and disposed about the mount, each of the measuring lasers being configured to collect a set of profile data and responsively generate a data signal;

a controller coupled to the rotational position sensor and the plurality of measuring lasers and receiving the rotational position signal and each of the data signals and responsively generating at least one data set that comprises dimensional information on the bevel gear product as a function of a rotational position of the bevel gear product about the mount axis, the controller being configured to;

gauge the first back face based on the at least one data set;

gauge the first through bore based on the at least one data set;

gauge the first counter bore and the first thickness based on the at least one data set; and

gauge the first face angle, the first back angle and the first outside diameter based on the at least one data set.

2. The fixture of claim 1, wherein the at least one data set includes a plurality of data subsets, each of the data subsets being based on the dimensional information on the bevel gear product provided by an associated one of the measuring lasers.

3. The fixture of claim 2, wherein controller is configured to generate the plurality of data subsets simultaneously.

4. The fixture of claim 1, further comprising a first slide assembly having a first slide mount that is movable along a first slide axis between a first position and a second position and wherein at least a first one of the plurality of measuring lasers is coupled to the first mount for movement therewith along the first slide axis.

5. The fixture of claim 4, further comprising a second slide assembly having a second slide mount that is movable along a second slide axis between a third position and a fourth position and wherein at least a second one of the plurality of measuring lasers is coupled to the second mount for movement therewith along the second slide axis.

6. The fixture of claim 5, wherein two of the plurality of measuring lasers are mounted to the second slide mount.

7. The fixture of claim 4, wherein two of the plurality of measuring lasers are mounted to the first slide mount.

8. A fixture for performing a gauging operation on a bevel gear product having a back face, a through bore, a thickness, a counter bore, a face angle, a back angle and an outside diameter, the fixture comprising:

a base;

a mount that is coupled to the base for rotation about a mount axis, the mount including a plurality of feet and a plurality of fingers, the feet cooperating to establish a predetermined plane, the fingers being movable along the mount axis relative to the feet, the fingers being configured to center the bevel gear product about the mount axis and to permit the back face of the bevel gear product to rest against the feet so that the back face is co-planar with the predetermined plane;

a rotational position sensor having a first sensor portion, which is fixedly coupled to the base, and a second sensor portion that is coupled to the mount for rotation therewith, the rotational position sensor sensing a rotational position of the mount relative to the base and responsively generating a rotational position sensor signal;

a first measuring laser coupled to the base and disposed along a first measurement axis, the first measuring laser being configured to collect a first set of profile data and responsively generate a first data signal;

a second measuring laser coupled to the base and disposed along a second measurement axis, the second measuring laser being configured to collect a second set of profile data and responsively generate a second data signal;

a third measuring laser coupled to the base and disposed along a third measurement axis, the third measuring laser being configured to collect a third set of profile data and responsively generate a third data signal;

a fourth measuring laser coupled to the base and disposed along a fourth measurement axis, the fourth measuring laser being configured to collect a fourth set of profile data and responsively generate a fourth data signal; and

a controller coupled to the rotational position sensor and the first, second, third and fourth measuring lasers, the controller being configured to;

gauge the back face based on the first data signal and the rotational position signal;

gauge the through bore based on the second data signal and the rotational position signal;

gauge the counter bore and the thickness based on the third data signal and the rotational position signal; and

gauge the face angle, the back angle and the outside diameter based on the fourth data signal and the rotational position signal.

9. The fixture of claim 8, further comprising a first slide assembly having a first slide mount that is movable along a first slide axis between a first position and a second position and wherein at least one of the first, second, third and fourth measuring lasers is coupled to the first mount for movement therewith along the first slide axis.

10. The fixture of claim 9, further comprising a second slide assembly having a second slide mount that is movable along a second slide axis between a third position and a fourth position and wherein at least one of the first, second, third and fourth measuring lasers that is not mounted to the first slide mount is coupled to the second mount for movement therewith along the second slide axis.

11. The fixture of claim 10, wherein the second and third measuring lasers are mounted to the second slide mount.

12. The fixture of claim 9, wherein the first and fourth measuring lasers are mounted to the first slide mount.