How to Calibrate WIPS

Guide to calibrating the Haas wireless intuitive probing system.

  • Author: iRobot
  • Time required: 30 minutes
  • Difficulty: Moderate

Getting Started

On initial setup or every six months, you should calibrate your wireless intuitive probing system. Here is how to quickly get this done in just a few steps.

Before you begin, you must first enter the Work Order # in this field.

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Step 1 How to Calibrate WIPS  ¶ 

  • Calibration of the WIPS option must be completed before any tool or part probing can commence.

  • Calibrate after any disturbance to the work probe stylus or when the tool probe tip needs replacing.

  • Calibrate the probes every six months for correct reference to the machine axes.

  • Go to Step 6 if your machine has not been calibrated in the past 12 months.

Step 2  ¶ 

  • Rotate the probe by hand to check runout.

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

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Step 3  ¶ 

  • First, verify that the probe system and connections to the machine are functioning correctly.

  • See step 3 and 4 for the correct process.

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Step 4  ¶ 

  • In MDI Mode, enter: M59 P1133; G04 P1.0: M59 P1134.

  • 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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Step 5  ¶ 

  • 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 prove is activated.

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Step 6 Calibration Tools:  ¶ 

    • 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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Step 7 Adjust stylus runout  ¶ 

  • This is how to adjust the runout of the Work Probe stylus.

  • First, 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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Step 8  ¶ 

  • 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 direction the stylus needs to be adjusted to reduce runout.

    • Loosen and then slightly tighten the two (2) opposing screws which are NOT inline with this direction to add some friction.

Step 9  ¶ 

  • Gently loosen the second set of (2) 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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Step 10  ¶ 

  • 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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Step 11  ¶ 

  • 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 proves can begin.

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Step 12  ¶ 

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

  • Press MDI/DNC. This is a great guide.

  • Then Press PRGRM/CONVRS.

  • On the screen, select the SETUP tab.

  • Then select the TOOL PROBE CALIBRATION tab.

  • Insert the Calibration Bar into the spindle.

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Step 13  ¶ 

  • 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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Step 14 INTRODUCTION  ¶ 

  • 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.

    • 1. GAUGE PIN FACE

    • 2. TOOL HOLDER GAUGE LINE

    • 3. SPINDLE FACE

Step 15  ¶ 

  • Zero the indicator on the spindle face.

  • Then zero the Z-axis OPERATOR position on the screen.

  • Jog the Z-axis to bring the tip of the Calibration Bar to the same zero reading on the indicator.

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Step 16  ¶ 

  • 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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Step 17  ¶ 

  • Use a micrometer to find the diameter of the gauge pin used in the Calibration Bar and write this number down also.

  • 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.

  • Next, enter the tool number you will use for the Calibration Bar.

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Step 18  ¶ 

  • 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.

Step 19  ¶ 

  • 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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Step 20  ¶ 

  • 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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Step 21  ¶ 

  • 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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Step 22  ¶ 

  • 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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Step 23  ¶ 

  • 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.

Step 24  ¶ 

  • 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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Step 25  ¶ 

  • 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.

For more information, check out the Work Instructions category page.

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