Rev b

Major VersionM

by Kristen Sowatsky

Introduction

Qualifications:

  • Level 1 Safety Training * CNC Operation Training

PPE:

Please make sure you have the following PPE:

  • Gloves
  • Helmet
  • Safety Glasses

summary]How to Calibrate a CNC machine.[/summary]

Verify that the probe system and connections to the machine are functioning correctly.
  • Verify that the probe system and connections to the machine are functioning correctly.

    • Reminder: Make sure to remove the spindle before starting.

  • Before beginning this procedure check to see if the fuse is dead. If the fuse is dead go here.

    • Note: View the Ring Guage item page for more detailed part information.

  • Remove the spindle.

  • Refer to the wiring diagram prior to starting step 2.

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In MDI, enter: M59 P1134. Hold the Work Probe within range of the OMI. Press and Hold CYCLE START.
  • In MDI, enter: M59 P1134.

  • Hold the Work Probe within range of the OMI. Press and Hold CYCLE START.

  • Gently depress the stylus, the control pendant will beep indicating the probe is activated.

  • View MSDS here

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In MDI Mode, enter: M59 P1133; G04 P1.0: M59 P1134. Please be aware of Quality Alert associated with this step. View Quality Alert.
  • In MDI Mode, enter: M59 P1133; G04 P1.0: M59 P1134.

  • Please be aware of Quality Alert associated with this step. View Quality Alert.

  • With the doors open, press and hold CYCLE START.

  • After the program has run, gently tap the Tool Probe with your finger.

  • The control pendant will beep each time the Tool Probe is depressed. The Tool Probe is activated.

  • Press RESET to end the activation.

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This completes the calibration routine and the status box will display COMPLETED.
  • This completes the calibration routine and the status box will display COMPLETED.

  • With the Work Probe runout set within specification and both Probes calibrated, the machine is ready to measure tools and work pieces using the WIPS probing routines.

  • Please complete [invalid guide link]

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Test Indicator accurate to 0.0005" or 0.013 mm Magnetic Base to mount the Indicator
  • Test Indicator accurate to 0.0005" or 0.013 mm

    • Magnetic Base to mount the Indicator

    • "Calibration Bar", generally consisting of a 1/2" or 12 mm gauge pin clamped in a collet style toolholder.

    • "Ring Gauge" typcally with a 2.000" or 50.000 mm bore.

  • Note: an accurately bored hole in a part or fixture can also be used in place of the Ring Gauge.

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Insert the Work Probe into the spindle. Place the magnetic base on the table and align the indicator tip to the probe's stylus. Jog the axes in 0.001 inch increments until the indicator touches the stylus.
  • Insert the Work Probe into the spindle.

  • Place the magnetic base on the table and align the indicator tip to the probe's stylus.

  • Jog the axes in 0.001 inch increments until the indicator touches the stylus.

  • With the indicator tip set against the stylus press E-STOP, so the probe isn’t accidentally ejected during adjustment.

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  • Rotate the probe by hand to check runout.

  • If runout exceeds 0.0005" or 0.013 mm, adjustment is required.

  • Enter the runout reading.

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On the probe body, loosen the two upper LOCKING set screws slightly, and then lightly tighten them. WARNING: The four lower sets of screws adjust the position of the stylus mount. Very small adjustments have a large effect on the stylus runout. Decide which dirsdfgsdfgn the stylus needs to be adjusted to reduce runout.
  • On the probe body, loosen the two upper LOCKING set screws slightly, and then lightly tighten them.

  • WARNING: The four lower sets of screws adjust the position of the stylus mount. Very small adjustments have a large effect on the stylus runout.

  • Decide which dirsdfgsdfgn the stylus needs to be adjusted to reduce runout.

    • Loosen and then slightly tighten the two opposing screws that are NOT inline with this direction to add some friction.

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Gently loosen the second set of two opposite screws.
  • Gently loosen the second set of two opposite screws.

    • These will be used to push the stylus mount into alignment.

  • Tighten the screw ON THE SAME SIDE as the highest indicator reading.

    • This moves the stylus tip away from the indicator.

  • As you tighten the “pushing” screw you will need to loosen the opposite adjustment screw and locking screw slightly to allow movement.

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Continue to adjust inward with each set of screws to reduce the runout as close to zero as possible. When runout is below 0.0005" or 0.013 mm, carefully tighten each upper locking screw while at the same time tightening the opposite lower adjustment screw.
  • Continue to adjust inward with each set of screws to reduce the runout as close to zero as possible.

  • When runout is below 0.0005" or 0.013 mm, carefully tighten each upper locking screw while at the same time tightening the opposite lower adjustment screw.

    • Then do the other set.

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With the locking screws tight, check the runout at the stylus one more time. Now that the work probe stylus is centered, calibration of both probes can begin.
  • With the locking screws tight, check the runout at the stylus one more time.

  • Now that the work probe stylus is centered, calibration of both probes can begin.

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The WIPS Calibration Menus are explained in the Haas VMC Operator's Manual. Press MDI/DNC.
  • The WIPS Calibration Menus are explained in the Haas VMC Operator's Manual.

  • Press MDI/DNC.

  • Press PRGRM/CONVRS.

  • Select the SETUP tab.

  • Select the TOOL PROBE CALIBRATION tab.

  • Insert the Calibration Bar into the spindle.

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With the Indicator mounted on the table, measure the runout of the Calibration Bar gauge pin.
  • With the Indicator mounted on the table, measure the runout of the Calibration Bar gauge pin.

  • If runout exceeds 0.0005 inches or 0.013 mm the bar will need to be adjusted or replaced.

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Using the Z-axis and an indicator, check the distance from the face of the spindle to the tip of the gauge pin. This is NOT a Gauge Line measurement.
  • Using the Z-axis and an indicator, check the distance from the face of the spindle to the tip of the gauge pin.

  • This is NOT a Gauge Line measurement.

  • Use this method consistently to measure the Calibration Bar and the results will always be repeatable for quality work.

    • GAUGE PIN FACE

    • TOOL HOLDER GAUGE LINE

    • SPINDLE FACE

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Note the on-screen Z-axis value, this is your Calibration Bar length. Write this value on a piece of paper.
  • Note the on-screen Z-axis value, this is your Calibration Bar length.

  • Write this value on a piece of paper.

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Use a micrometer to find the diameter of the gauge pin used in the Calibration Bar and write this number down. Follow the on-screen prompts. Jogging Z-axis, bring the calibration bar just above the tool probe, and press F1.
  • Use a micrometer to find the diameter of the gauge pin used in the Calibration Bar and write this number down.

  • Follow the on-screen prompts. Jogging Z-axis, bring the calibration bar just above the tool probe, and press F1.

  • Then Jog the X axis to center the bar over the tool probe and press F1 again. Do the same for the Y axis.

  • Enter the tool number you will use for the Calibration Bar.

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Now enter the Calibration Bar length. Use the value you wrote down in Step 15.
  • Now enter the Calibration Bar length. Use the value you wrote down in Step 15.

  • Next, enter the micrometer reading previously noted in Step 16.

  • WARNING: THIS MUST BE A DIAMETER AND NOT A RADIUS MEASUREMENT.

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  • Press CYCLE START to execute the automatic calibration routine.

  • The Calibration Bar will touch off the top of the Tool Probe, and in four places on the side of the probe.

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When the program is finished, the CALIBRATION status box will display COMPLETED. Calibration of the Work Probe can begin. Press CANCEL and select the Work Probe Calibration tab.
  • When the program is finished, the CALIBRATION status box will display COMPLETED. Calibration of the Work Probe can begin.

  • Press CANCEL and select the Work Probe Calibration tab.

  • Clamp the Ring Gauge to the table within reach of the probe.

  • Enter the Work Offset to be used for Work Probe calibration.

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With the calibration bar in the spindle, position the pin above the edge of the ring gauge. Place a shim, feeler gauge, or slip of paper over the gauge.
  • With the calibration bar in the spindle, position the pin above the edge of the ring gauge.

  • Place a shim, feeler gauge, or slip of paper over the gauge.

  • Press the .0001/.1 button. Jog the Z-axis so the tip of the bar slightly contacts the paper. Press F1.

  • Enter the length of the calibration bar from Step 15. Press the WRITE/ENTER button.

  • Enter the thickness of the shim used, in this case a piece of paper at 0.003 inch. Press WRITE/ENTER again.

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Remove the calibration bar from the spindle and insert the Work Probe in its place. Measure the Work Probe length with a machinist’s scale (accuracy of 1/16 inch or 1.5 mm).
  • Remove the calibration bar from the spindle and insert the Work Probe in its place.

  • Measure the Work Probe length with a machinist’s scale (accuracy of 1/16 inch or 1.5 mm).

  • Note that the standard Renishaw probe uses a 0.2362 inch or 6 mm diameter ball.

  • Now enter the length of the Work Probe as well as the diameter of the indicating ball.

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Measure the ring gauge with an inside micrometer or bore gauge. If the Inside Diameter is etched on the Gauge, that number can be used.
  • Measure the ring gauge with an inside micrometer or bore gauge.

  • If the Inside Diameter is etched on the Gauge, that number can be used.

  • Next enter the diameter of the Ring Gauge and press WRITE/ENTER.

  • Jog the axes until the stylus tip is in the center of the ring, and about 0.3" or 7 mm above the surface.

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Press CYCLE START to begin the automatic calibration process. The Work Probe will touch the inside diameter of the ring gauge five separate times in X and Y.
  • Press CYCLE START to begin the automatic calibration process.

  • The Work Probe will touch the inside diameter of the ring gauge five separate times in X and Y.

  • Then, it touches off the top surface of the ring gauge.

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  • Insert wisdom here.

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Conclusion

This guide was created using Dozuki electronic work instruction software.

Dozuki System

Member since: 09/24/2009

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