VMCsi Probe Part Option - Set Up & Calibrate Spindle Probe

Using the tool provided by Renishaw, tighten the Stylus (P/N: 34080-5) into the OMP40-2 Probe (P/N: 34080-1). Torque to 1.3 - 1.6 lbf-ft.

Only use the provided tool to tighten the Stylus into the OMP40-2 Probe. This tool is designed to bend at a torque below that which will damage the Probe.

Attach the OMP40-2 Probe into the CAT40 Shank (P/N: 34080-8) by using a 2mm Allen Wrench to secure the six (6) set screws, as indicated in the image.

There are two (2) upper pointed set screws, and four (4) lower flat set screws to secure the OMP40-2 Probe to the CAT40 Shank. Torque each set screw to 0.4 - 1.1 lbf-ft.

Install Retention Knob (P/N: 26800-2) to the CAT40 Shank.

Using a flat head screwdriver, turn the cover to remove the batteries from the optical receiver body. Remove protective battery cover from OMP40-2 Probe. After waiting approximately 5 seconds refit the batteries turning the cover to hold the batteries in place.

Do not allow coolant or debris to enter the battery compartment.

The LEDs on the OMP 40-2 probe body will flash red, then green, then blue. At this point immediately push and hold the part probe stylus deflected to enter configuration mode.

Do not remove the batteries while in configuration mode. To exit, leave the stylus untouched for more than 20 seconds.

The probe will now show its battery status; 8 red flashes of the LED will show the batteries are good, a repeated red flash followed by a blue flash will indicate the batteries are low and need to be replaced.

Keeping the stylus deflected the Switch-off method will now be displayed, at this point release the stylus. For the Switch-off method, the LEDs should flash red twice followed by a long red flash.

Deflect the stylus, releasing after 1 second, to toggle through the settings until you have this setting selected. Once the Switch-off method is confirmed to be optical off deflect the stylus for longer than 4 seconds to move onto the next menu.

For Enhanced trigger filter, the LEDs should flash green twice followed by a long red flash. If the probe only flashes green, deflect the stylus, releasing after 1 second, to toggle through the settings. Once the Enhanced trigger filter is confirmed to off 0 ms deflect the stylus for longer than 4 seconds to move onto the next menu.

For the Optical transmission method, the LEDs should flash blue. If the probe flashes colors other than blue deflect the stylus, releasing after 1 second, to toggle through the settings. Once the probe identification is confirmed to modulated probe 1 and only flashes blue deflect the stylus for longer than 4 seconds to move onto the next menu.

For the optical power setting deflect the stylus, releasing after 1 second, until you see 2 yellow flashes followed by a long red flash. Leave the stylus untouched for more than 20 seconds to confirm the settings.

With OMP40-2 Probe loaded in the spindle, use a dial indicator to measure the runout of the Stylus ruby while spinning the Probe by hand.

For initial calibration of the OMP40-2 Probe, the maximum tolerance for runout is +/-0.0004" at the ruby on the stylus.

As shown in the image, use the four (4) lower flat set screws on the CAT40 shank to minimize the runout by loosening and tightening opposing screws in pairs. Adjust until maximum tolerance for runout is achieved.

Next, use the two (2) upper pointed set screws on the CAT40 shank to minimize the runout by loosening and tightening both opposing screws. Adjust until maximum tolerance for runout is achieved.

For the final calibration of the OMP40-2 Probe, the maximum tolerance for runout is +/-0.0001" at the ruby on the stylus.

As shown in the image, use the four (4) lower flat set screws on the CAT40 shank to minimize the runout by loosening and tightening opposing screws in pairs. Adjust until final maximum tolerance for runout is achieved.

The following procedures detail how to set up and calibrate the OMP40-2 Probe within the Siemens control of the VMCsi:

Select JOG on the Machine Control Panel (MCP).

On the touchscreen, (1) press the first left-side bar shortcut key (the large "M," which is the Machine Key) on the top left of the screen, and then (2) press the Vertical Soft Key (VSK) called "Act. values Machine."

(3) All axis readouts will have an M in front of them when "Act. values Machines" is enabled.

Next, manually create the OMP40-2 Probe as a New Tool in the control:

(1) Press the second left-side bar shortcut key (Tool List), and (2) select a location that is outside of the ATC tool list (not in locations #1 to 24).

Next, (3) press the VSK "New tool" on the right side of the screen.

The "New tool - favorites" window will appear; (1) choose "710 - 3D probe" from the list, and then (2) press VSK "OK" to add it as a new tool type.

Enter the length and diameter of the 3D Probe Tool on the "Tool list" window:

(1) Use an 8" dial caliper to measure the tool length of the OMP40-2 Probe from the tip of the tool to the top of the flange, plus an additional 1/4" (see image).

A tape measure works to get a rough length for use with the tool setter to get a final accurate measurement.

(2) Enter this number under the "Length" column.

(1) Use the dial calipers to measure the diameter of the OMP40-2 Probe's Stylus ruby, and (2) enter this number under the "ø" column.

The diameter will also be on the packaging for the stylus.

Select the type of tool your shop uses for calibration.

No Calibration Tool:

Use Steps 9

Precision Calibration Tool:

Use Steps 10 -12

Set the spindle above 4" fixed height above the worktable:

Set up two (2) 1-2-3 Blocks (4" fixed height) on the worktable, as shown on the image.

Jog the head down just below the fixed height, so that the setup of the 1-2-3 Blocks cannot be placed underneath the spindle.

Next, move the spindle head only slightly up, so that the setup of the 1-2-3 Blocks can slide below the spindle.

The spindle head should not be directly pushing down on or actually touching the 1-2-3 Blocks; it should only be slightly above the blocks.

Note the MZ1 value of the spindle's location above the 1-2-3 Blocks; you will need it when you reach Step 15 of this guide.

Set your work offset before you proceed. Press (1) the "T, S, M" button from the HSK, press (2) the "Work offset" which gives you a pop-up menu. Press (3) "G54". G54 is an example, you can select any offset.

Press "CYCLE START" on the MCP and you will see the indicated field appear with G54 displayed. Next step press "Select tool".

Press "Tool list" from the HSK and check if your calibration tool is in the list. If it is defined, skip the next 3 steps and go to Step 13. Otherwise complete the next 3 steps to MANUALLY LOAD the calibration tool.

MANUALLY LOAD 1: The "New tool -favorites" window will appear; select the right VSK "Spec. tool 700 - 900", then choose "725 - Calibrating tool" as the new tool type. Press right VSK "OK".

MANUALLY LOAD 2: Once the calibration tool has been added to the tool list, enter the length and diameter for the calibration tool using pop-up keypad. Inset photo shows measurement data found engraved on calibration tool.

MANUALLY LOAD 3: Insert the calibration tool into the spindle through the following:

Press "JOG" button on the MCP at upper left corner, press (1) HSK "T, S, M", and then click on the (2) VSK "Select tool". Press "CYCLE START" follow prompts to open door, enter calibration tool in spindle and press "CYCLE START" again.

To set your reference, lower the calibration tool below the 123 blocks. Then bring it up slowly until the block barely slides under the calibration tool.

(1) - Toggle the "Act values machine" button on the right VSK to remove the blue highlighting which (2) changes the axis to display work offset values.

(1) - Press "Z=0" on the right VSK which zeros out the Z axis position as shown at (2).

Manually load the OMP40-2 Probe into the spindle through the following steps:

(1) Press the HSK "T,S,M," then (2) click on the T field, and then (3) click on the VSK "Select Tool."

From the "Tool selection" window, (1) click and choose the 3D Probe Tool, and (2) hit VSK "OK."

As prompted by the screen, press CYCLE START on the MCP.

Press DOOR OPEN to unlock door.

Once the above steps have been completed, the "T" field under the "T,F,S" section should now be populated with the 3D Probe Tool information.

Calibrate the length of the OMP40-2 Probe through the following steps:

(1) Press HSK "Meas. workp.", and then (2) press VSK "Calibrate probe."

When the "Calibrate: probe" window appears, (1) choose VSK "Length."

If NOT using Calibration tool:

(2) Enter the MZ1 Value from Step 9 of this guide under the Z0 field (as shown on the image).

If using the Calibration tool:

(2) Enter "0" under the Z0 field.

Jog the head on the Z Axis until the OMP40-2 Probe is approximately 0.5" above the 1-2-3 Blocks (see image).

Back on the "Calibrate: probe" window (with the VSK "Length" selected), hit CYCLE START on the MCP.

The OMP40-2 Probe will touch the top of the 1-2-3 Blocks.

Once calibration ends, the "Calibrate: probe" window will show the final Machine Values and Trigger Points.

In accordance to the Inspection process for the OMP40-2 Probe, conduct the Calibrate Probe Length steps above three times, and take note of the Machine Values and Trigger Points each time. Ensure that these values remain consistent throughout this process.

Calibrate the diameter of the OMP40-2 Probe through the following steps:

As shown on the image, replace the two (2) 1-2-3 Blocks with a Ring Gauge. Note the Ring Gauge's diameter, and place it near the center of the worktable.

Jog the spindle until OMP40-2 Probe's Stylus Ball is located inside the center of the Ring Gauge.

Back to the "Calibrate: probe" window, (1) click the VSK "Diameter."

(2) Enter the Ring Gauge's diameter (in inches) under the ø field (as shown on the image).

Click CYCLE START on the MCP.

As shown on the illustration on the screen, the OMP40-2 Probe will touch all sides of the Ring Gauge.

Once calibration ends, the "Calibrate: probe" window will show the final Machine Values and Trigger Points.

In accordance to the Inspection process for the OMP40-2 Probe, conduct the Calibrate Probe Diameter steps above three times, and take note of the Machine Values and Trigger Points each time. Ensure that these values remain consistent throughout this process.

If results are not consistent, lower the program feed rate and try again.