Service Home How To Procedures UMC Alignment Indicating Zones - AD0490
Last updated: 02/10/2025

UMC Alignment Indicating Zones

AD0490

UMC Alignment Indicating Zones - AD0490

Indicating Zones

1

X-axis Roll

  • First attach tool T-2192 to the side of the spindle.
  • For X-Roll measurement hold the following Y and Z-axis postitions:
    • UMC 500 (Y,Z): -8, -8
    • UMC 750 (Y,Z): -10, -10
    • UMC 1000 (Y,Z): -12, -12
    • UMC 1250 (Y,Z): -15, -14
  • Measure X-axis roll (NTE 0.0005" / 10")

 

2

B-axis to Y-axis Parallelism

  • Zero-Return B and C-axis.
  • Measure the platter runnout in the Y-Axis (NTE: 0.0008" / 10"; 0.0012" / 15")
  • Then measure this same surface with the B-Axis at both -90° and +90°  (NTE: 0.0008" / 10"; 0.0012" / 15")
  • For UMC 500 and 750, measure the full length of the platter
  • For UMC 1000 and 1250, offset 2” from edge of platter then measure across 20”

3

Y-axis to X-axis Perpendicularity

  • Use jacking screws to make the top surface of the granite parallel to XY plane (NTE: 0.0002")
  • Next, check if Y square to X (NTE 0.0005" / 10")

4

Perpendicularity of X-axis to Z-axis

  • Place granite and precision cylinder on platter in the orientation shown
  • Use jacking screws to set top surface of cylinder parallel to XY-Plane (NTE 0.0002")
  • XY Spindle locations for this step:
    • UMC 500, X = -6, Y = -8
    • UMC 750, X = -10, Y = -10
    • UMC 1000, X = -17, Y = -12
    • UMC 1250, X = -22, Y = -14
  • Z start position for this measurement:
    • UMC 500, Zstart = Ztop – 2”
    • UMC 750, Zstart = Ztop – 5”
    • UMC 1000, Zstart = Ztop – 7”
    • UMC 1250, Zstart = Ztop – 10”
  • Ztop is the limit of Z-axis travel in the positive direction (up)
  • From Zstart, measure down 10” along cylinder

5

Perpendicularity of Y-axis to Z-axis

  • Place granite and precision cylinder on platter in the orientation shown
  • Use jacking screws to set top surface of cylinder parallel to XY-Plane (NTE 0.0002")
  • XY Spindle locations for this step:
    • UMC 500, X = -6, Y = -8
    • UMC 750, X = -10, Y = -10
    • UMC 1000, X = -17, Y = -12
    • UMC 1250, X = -22, Y = -14
  • Z start position for this measurement:
    • UMC 500, Zstart = Ztop – 2”
    • UMC 750, Zstart = Ztop – 5”
    • UMC 1000, Zstart = Ztop – 7”
    • UMC 1250, Zstart = Ztop – 10”
  • Ztop is the limit of Z-axis travel in the positive direction (up)
  • From Zstart, measure down 10” along cylinder

6

C-Axis Perpendicularity to XY Plane

  • Reposition the mag base on the spindle so it cannot rotate with the spindle.
  • Place precision guage block at the edge of the platter in the 12 o'clock position. 
  • Zero the indicator tip on the gauge block in this position.
  • Rotate the C-axis  90° 
  • Next, jog the spindle in the X and Y-axis to follow the guage block and take a measurement of the same point on the platter. No rotation of the spindle should occur
  • Repeat this 2 more times for a total of 4 positions, 90° apart, at the edge of the pallet as shown. 
  • The difference between 12 and 6 o'clock position measurements determines flatness along the X-Axis (NTE 0.0005")
  • The difference between 3 and 9 o'clock position mesurements determines flatness along the Y-Axis (NTE 0.0005")

7

Platter Face Runout

NOTE: C-Axis brake is off for this step

  • Place precision guage block at the edge of the platter in the 12 o'clock position. 
  • Zero the indicator tip on the gauge block in this position.
  • Rotate the C-axis  90° but, keep the guage block at the 12 o'clock position
  • Take a measurement from the top of the gauge block
  • Repeat this 2 more times for a total of 4 positions, 90° apart, at the edge of the pallet as shown. 
  • Note the total indicated runout. (NTE 0.001")

8

Parallelism of Platter Surface to XY plane

  • Zero-Return the C-axis so the T-slots run parallel to the X-axis
  • Place indicator tip on the platter and jog in the X-axis along the platter to find the X-axis platter parallelism (NTE 0.001” / 10"; 0.0015" / 15")
  • Next jog in the Y-axis along the platter to find the Y-axis platter parallelism (NTE 0.001” / 10"; 0.0015" / 15")

9

Spindle Runout

  • Center the spindle over the C-Axis bore.
  • Place the mag base on table and insert test bar.
  • Check spindle runout at base of test bar (NTE 0.0005" TIR)
  • Check spindle runout 6" down from the base of the test bar (NTE 0.001" TIR)

10

Spindle Centerline Parallelism to Z-axis

  • Use jacking screws to make granite parallel to XY plane in the orientation shown (NTE: 0.0002")
  • Center the spindle over the C-axis platter bore
  • Sweep in a 10" diameter circle
  • Record XZ TIR  (NTE 0.0005")
  • Record YZ TIR  (NTE 0.0005")

11

Concentricity of C-Axis Bore

  • Place indicator as show and jog C-axis 360°
  • Record TIR of precision bore (NTE 0.002")

12

Machine Rotary Zero Point

  • Use the VQC Macro Program and probe system to verify the values for the Coldfire parameters or the NGC settings shown below:
    • 255 - MRZP X OFFSET
    • 256 - MRZP Y OFFSET
    • 257 - MRZP Z OFFSET
    • 254 - 5 AXIS ROTARY CENTER POINT DISTANCE