wi-134-1a mitutoyo

Date: 21/02/12 Issue: 1A WI-134

INSTRUCTION: Process for use of Mitutoyo BH Co-ordinate Measuring Machine (CMM)

Document ID: WI-134 Issue 1A of 20 Master Location: Document Control

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Prepared By Approved By

Signature B. Snape / P. Rouse B. Snape

Date 21/02/12 21/02/12

Date: 21/02/12 Issue: 1A WI-134



This document is the property of Axiom Rail and shall not be copied in part or in full without the written permission of the Safety and Compliance Manager.

DOCUMENT REVISION RECORD. This schedule will be updated when necessary by the issue of amended pages. Amendments to the previous text will be detailed within the table below.

Rev Revision Details Prepared Approved

1A First Issue B. Snape / P. Rouse

21/02/12

Date: 21/02/12 Issue: 1A WI-134



Purpose The purpose of the Work Instruction is to provide clear instructions to the Wheels Department, how to use the Co-ordinate Measuring Machine (CMM) to measure bearing internal an external diameters, as part of the quality process designed to isolate bearing rings which are not within the size tolerance specified.

Scope This Work Instruction is a step by step guide to using the Mitutoyo Co-ordinate Measuring Machine (CMM) located in the Wheels Department Quality Assurance Room. This is used in the training and instruction of members of staff who are required to use this equipment.

Requirements Members of the Wheels Department must be competent in the use of the CMM prior to being allocated to regularly performing this quality check. Staff must be assessed against, and be proficient in the use of the CMM according to the process defined in this Work Instruction. Competence in this use of the CMM should be checked every two years to confirm continuing competence. A measurement task should be set by the assessor, and should have printed results that can be verified by the assessor as evidence of competence. N.B. The plastic non-slip mat is to be replaced every 12 months with an approved mat.

Date: 21/02/12 Issue: 1A WI-134



Procedure Visually check that the machine is in calibration and is acceptable to operate. The printer is loaded with paper and the ink levels are okay. Make sure the non-slip plastic bed is firmly secured and screwed down on to the granite bed of the machine. Turn on the CMM Computer Printer Allow time for the computer screen to warm up. Make sure that all three ‘Axis-lock Switches’ on the right hand Column of the CMM is switched to the Right. This locks each of the three Axis of the Probe assembly in place.

Left is lock, Right is unlock.

• SWITCH-X locks the Left/Right X-Axis

• SWITCH-Y lock the Back/Forward Y-Axis

• SWITCH-Z locks the Probe Up/Down Z-Axis

On the computer screen should be highlighted 3D-GEOPAK... Press Enter.

Screen showing --------- Showing Con Fig. Yes – No. need Yes. Press Enter.

Screen Showing -------- Define Probe Matrix. 1-5-0 Press Enter. Press Enter again.

Date: 21/02/12 Issue: 1A WI-134



Screen showing Matrix of bearings by type starting at N/o 1: (No. 3 Timken is shown) Select program from the matrix by checking the bearing type recorded on SF-266-C and Bearing Check Sheet SF-076-A.

Check Unit of Measurement on the selected program and set the switch at the front of the bed to the correct unit of measurement. Failing to do this will result in a red print out, failing the bearing. Most measurements are in ‘mm’ (RED) NB. RED is mm GREEN is Inches

Press F6. To Repeat Mode Press Enter. Screen showing N/o of Reps, and blue box showing No.3 (Timken in this case). Press Enter.

Now enter the Job No. shown in the job number box on from the SF-077 Bearing Check Sheet. Press Enter.

Date: 21/02/12 Issue: 1A WI-134



1. ROLLER ASSEMBLY See Screen Instruction - place Roller Assembly No.1 on the machine Place bearing roller assembly on to the non-slip plastic bed.

Now follow on screen instructions. Take a plane on the top of the roller assembly Inner Ring. Press Enter.

Screen changes showing 1-4.

Move switches X-Y to the right to unlock. Holding Probe head, unlock Z, then move the Probe assembly.

Date: 21/02/12 Issue: 1A WI-134



Move the Probe assembly forwards and to your left, pulling down on the centre probe support arm to take plane. Position probe as in the photo. Touching the top of the roller assembly take four equal readings. The screen will highlight the number of contacts. When the four measurements are taken and this is confirmed by the screen. Retract probe head and lock using switch Z. Press Enter Printer prints off results. (These will build up the Results Print-out to go into the Bearing-Pack).

Screen changes to --------- Take a circular from the inner ring.

Screen shows 1-8

Date: 21/02/12 Issue: 1A WI-134



Now the machine will check roundness of the assembly. Pull down the probe support arm. When in position move switch Z to the left this will unlock the movement of the Probe assembly.

Now take eight equal measurements by touching the probe on the inside of the bearing assembly 12mm down. The applications are recorded on the screen. When applications are complete.

Printer prints results.

Screen Changes ------------ turn over and take a plane. Place bearing roller assembly on to the non-slip plastic bed. Press Enter. Now follow on screen instructions. 1: Take a plane on the top of the roller assembly Inner Ring.

Press Enter. Screen changes showing 1-4.

Move the Probe assembly forwards and to your left, pulling down on the centre probe support arm. When the probe is in position move switch Z to the left to lock Probe assembly.

Date: 21/02/12 Issue: 1A WI-134



Touching the top of the roller assembly take four equal readings. The screen will highlight the number of contacts. When the four measurements are taken and this is confirmed by the screen.

Printer prints of results. Screen changes to --------- Take a circular from the inner ring.

Moves switch Z to the left to lock Probe assembly. Press Enter.

Screen shows 1-8 Now the machine will check roundness of the assembly.

Pull down the probe support arm. When in position move switch Z to the left this will lock the Probe movement of the Probe assembly. Now take eight equal measurements by touching the probe on the inside of the bearing assembly 12mm down. The applications are recorded on the screen. When applications are complete. Printer prints results.

Date: 21/02/12 Issue: 1A WI-134



2. INNER RING ASSEMBLY 2 Screen Change ---------------Remove No 1 Assembly and place No 2 Inner Ring Assembly on to the table. Repeat the above process on the other roller assembly. Two assembly’s per bearing unit. When the last of the eight measurements have been completed on both sides. Printer Prints the results. Move switch Z to the Right to Unlock the Probe, then move Probe assembly out of the way.

Date: 21/02/12 Issue: 1A WI-134



3. OUTTER RING (BEARING CASE) Screen Change ---------------Remove No 2 Roller Assembly and place Outer Ring (Bearing case) on to the table.

Screen Changes ------- Take a plane 1-4.

Move switch Z to the right to release the Probe assembly. 1: Take a plane on the top of the roller assembly Inner Ring. Press Enter. 31

Screen changes showing 1-4.

Date: 21/02/12 Issue: 1A WI-134



Move the Probe assembly forwards and to your left, pulling down on the centre probe support arm.

Touching the top of the Outer Ring (bearing case) take four equal readings. The screen will highlight the number of contacts. When the four measurements are taken and this is confirmed by the screen.

Press Enter. Printer prints of results.

Screen Changes ---------- Take a circle from counter bore. Press Enter.

Screen Changes ------------- 1-8

Date: 21/02/12 Issue: 1A WI-134



Move the probe to the inside bore of the Outer Ring (Bearing Case) and take 8 equal measurements around the circumference with the probe at approximately 12mm from the top of the Outer Ring. Screen confirms number of applications. On completion of applications. Press Enter. Printer prints results.

Screen changes------------- Take a circle of the outside diameter.

Press Enter. Screen changes ---------- 1-8

Move the probe to the outside of the Outer Ring (Bearing Case) and take 8 equal measurements around the circumference with the probe at *28 mm from the top of the Outer Ring (Bearing Case). Screen confirms number of applications, on completion of applications. Press Enter. Printer records results.

* (28mm depth, Ref. IB/COSUA002 10.2.3 – maximum capability of Mitutoyo)

Date: 21/02/12 Issue: 1A WI-134



Screen Changes --------- Turn Outer Ring Over. Take a plane. Press enter. Repeat the above instruction for the Outer Ring.

Printer records results.

NOTE: If Any Measurement Errors occur (out of range), the error is indicated by the Double Chevron (see right)

Date: 21/02/12 Issue: 1A WI-134



4. FRONT ENCLOSURE Screen Changes ------------ Remove Outer Ring and place Enclosure ring on to the table, take a plane. NOTE: Front enclosure should be paced on a machine jig to stop the enclosure rocking on the studs. (new photo will be required).

Press Enter.

Screen changes 1-4.

Touching the top of the Enclosure Ring, take four equal readings. The screen will highlight the number of contacts. When the four measurements are taken and this is confirmed by the screen.

Date: 21/02/12 Issue: 1A WI-134



Screen Changes. --------- Take a Circle from the Outside Diameter. Press Enter.

Screen Changes 1-8

Move the probe to the outside of the Enclosure Ring and take 8 equal measurements around the circumference with the probe touching the enclosure ‘Securing-lip’ any lip. (This measures lip ware). The Screen confirms number of applications, on completion of applications.

Press Enter. Printer records results.

Date: 21/02/12 Issue: 1A WI-134



5. REAR ENCLOSURE RING Screen Changes---------Remove number one enclosure ring, place number two enclosure on the table. Take a plane. Press Enter.

Screen Changes 1-4 (1-3 shown for Timken bearings)

Touching the top of the Enclosure Ring, take four equal readings. The screen will highlight the number of contacts. When the four measurements are taken and this is confirmed by the screen.

Screen Changes ---------Take a circle from the Outside Diameter.

Press Enter. Printer Records results.

Date: 21/02/12 Issue: 1A WI-134



Screen Changes 1-8 Move the probe to the outside of the Enclosure Ring and take 8 equal measurements around the circumference with the probe touching the securing-lip.

(This measures Securing-lip ware). Screen confirms number of applications, on completion of applications.

Date: 21/02/12 Issue: 1A WI-134



6. BACKING RING Screen changes--------Remove Enclosure Ring and place Backing Ring on the table. Take a plane.

Press Enter.

Screen changes 1-4. Touching the top of the Backing Ring, take four equal readings. The screen will highlight the number of contacts. When the four measurements are taken and this is confirmed by the screen.

Date: 21/02/12 Issue: 1A WI-134



Screen changes Take a circle from the ID (Inside Diameter).

Press enter.

Screen changes 1-8

Move the probe to just inside of the Backing Ring and take 8 equal measurements around the circumference with the probe at approximately 5 mm from the top of the Enclosure Ring. Screen confirms number of applications, on completion of applications. Screen changes ----end of program

Printer records results. Printer will records all failures in Red. Bearing can be retested.

wi-134-1a mitutoyo

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work instruction

cmm computer printer

instruction of members

quality process

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