[Script Info]
Title: 
[Events]
Format: Layer, Start, End, Style, Name, MarginL, MarginR, MarginV, Effect, Text
Dialogue: 0,0:00:07.81,0:00:11.14,Default,,0000,0000,0000,,Welcome to this "VMC Leveling" video
Dialogue: 0,0:00:11.14,0:00:16.63,Default,,0000,0000,0000,,This VF-2SS is connected to air and power and is operational
Dialogue: 0,0:00:16.63,0:00:19.91,Default,,0000,0000,0000,,however, the machine is not at the proper height or level
Dialogue: 0,0:00:19.91,0:00:23.89,Default,,0000,0000,0000,,to provide optimal performance and accuracy
Dialogue: 0,0:00:23.89,0:00:26.93,Default,,0000,0000,0000,,There are three steps to the leveling process
Dialogue: 0,0:00:26.93,0:00:31.58,Default,,0000,0000,0000,,First, the machine is positioned at the correct height above the coolant tank
Dialogue: 0,0:00:31.58,0:00:34.68,Default,,0000,0000,0000,,Second, level the machine front to back
Dialogue: 0,0:00:34.68,0:00:38.84,Default,,0000,0000,0000,,and side to side to permit good coolant and chip flow
Dialogue: 0,0:00:38.84,0:00:43.70,Default,,0000,0000,0000,,Finally, remove any Twist or Bow in the base casting
Dialogue: 0,0:00:43.70,0:00:46.86,Default,,0000,0000,0000,,The tools needed for this procedure are:
Dialogue: 0,0:00:46.86,0:00:51.03,Default,,0000,0000,0000,,a three quarter inch (3/4") socket and ratchet, a one and a half inch (1 ½") wrench
Dialogue: 0,0:00:51.03,0:00:55.53,Default,,0000,0000,0000,,a tape measure, a 5 tenths or 1 micron test indicator
Dialogue: 0,0:00:55.53,0:00:58.04,Default,,0000,0000,0000,,and a magnetic base to mount the indicator
Dialogue: 0,0:00:58.04,0:01:01.54,Default,,0000,0000,0000,,and Haas Leveling Tool T-2181
Dialogue: 0,0:01:01.54,0:01:06.99,Default,,0000,0000,0000,,A precision machinists level is also acceptable for taking level measurements
Dialogue: 0,0:01:06.99,0:01:09.96,Default,,0000,0000,0000,,This video features a VF-2SS
Dialogue: 0,0:01:09.96,0:01:14.35,Default,,0000,0000,0000,,but the same procedures apply to all VF Series machines
Dialogue: 0,0:01:14.35,0:01:18.14,Default,,0000,0000,0000,,Larger machines with outrigger supports require additional steps
Dialogue: 0,0:01:18.14,0:01:20.11,Default,,0000,0000,0000,,during the leveling process
Dialogue: 0,0:01:20.11,0:01:22.08,Default,,0000,0000,0000,,This information can be found in the Haas
Dialogue: 0,0:01:22.08,0:01:24.20,Default,,0000,0000,0000,,machine Installation manual
Dialogue: 0,0:01:24.20,0:01:26.33,Default,,0000,0000,0000,,To clear the coolant tank
Dialogue: 0,0:01:26.33,0:01:30.13,Default,,0000,0000,0000,,lift the Base Casting three and a half (3 ½") inches off the ground
Dialogue: 0,0:01:30.13,0:01:36.10,Default,,0000,0000,0000,,by adjusting the four corner leveling screws to the same height
Dialogue: 0,0:01:36.10,0:01:37.42,Default,,0000,0000,0000,,On base castings with
Dialogue: 0,0:01:37.42,0:01:41.48,Default,,0000,0000,0000,,6 or 8 leveling screws the middle screws should not be touching
Dialogue: 0,0:01:41.48,0:01:45.23,Default,,0000,0000,0000,,the pads during the leveling procedure
Dialogue: 0,0:01:45.23,0:01:50.08,Default,,0000,0000,0000,,Move the X and Y axes until the table is centered
Dialogue: 0,0:01:50.08,0:01:54.36,Default,,0000,0000,0000,,Clean the table surface and the leveling tool
Dialogue: 0,0:01:54.36,0:01:58.29,Default,,0000,0000,0000,,Make sure the calibration of your level is correct before starting
Dialogue: 0,0:01:58.29,0:02:01.76,Default,,0000,0000,0000,,Place tool T-2181 on the mill table
Dialogue: 0,0:02:01.76,0:02:06.41,Default,,0000,0000,0000,,and monitor the exact position of the bubble on the precision vial
Dialogue: 0,0:02:06.41,0:02:08.53,Default,,0000,0000,0000,,Using a t-slot for alignment
Dialogue: 0,0:02:08.53,0:02:14.84,Default,,0000,0000,0000,,rotate the level 180 degrees and place it in the same position on the table
Dialogue: 0,0:02:14.84,0:02:18.11,Default,,0000,0000,0000,,The bubble should stay in the exact same position
Dialogue: 0,0:02:18.11,0:02:21.10,Default,,0000,0000,0000,,If the values are different by more than one division
Dialogue: 0,0:02:21.10,0:02:25.26,Default,,0000,0000,0000,,then the level should be returned to Haas for adjustment
Dialogue: 0,0:02:25.26,0:02:27.70,Default,,0000,0000,0000,,With the leveling tool at the center of the table
Dialogue: 0,0:02:27.70,0:02:33.06,Default,,0000,0000,0000,,and the short leveling vial parallel to the Y-axis, the shorter vial is measuring the angle
Dialogue: 0,0:02:33.06,0:02:36.93,Default,,0000,0000,0000,,of the machine front to back
Dialogue: 0,0:02:36.93,0:02:41.21,Default,,0000,0000,0000,,Lift either the front or back of the base casting as necessary
Dialogue: 0,0:02:41.21,0:02:43.11,Default,,0000,0000,0000,,to make the machine level
Dialogue: 0,0:02:43.11,0:02:45.01,Default,,0000,0000,0000,,Remember to always lift the
Dialogue: 0,0:02:45.01,0:02:49.13,Default,,0000,0000,0000,,lower end of the machine to maintain clearance to the coolant tank
Dialogue: 0,0:02:49.13,0:02:52.55,Default,,0000,0000,0000,,Each time you make an adjustment turn both leveling screws
Dialogue: 0,0:02:52.55,0:02:55.71,Default,,0000,0000,0000,,on that end an equal amount
Dialogue: 0,0:02:55.71,0:02:58.94,Default,,0000,0000,0000,,Adjust the screws until the bubble is centered
Dialogue: 0,0:02:58.94,0:03:04.91,Default,,0000,0000,0000,,Adjustments close to zero will make subsequent changes easier
Dialogue: 0,0:03:04.91,0:03:09.41,Default,,0000,0000,0000,,With the machine leveled front to back, use the longer precision level
Dialogue: 0,0:03:09.41,0:03:12.50,Default,,0000,0000,0000,,lying along the X-axis, which shows the angle
Dialogue: 0,0:03:12.50,0:03:16.48,Default,,0000,0000,0000,,of the machine from left to right
Dialogue: 0,0:03:16.48,0:03:20.43,Default,,0000,0000,0000,,Again, lift the lowest side of the machine to bring it level
Dialogue: 0,0:03:20.43,0:03:23.71,Default,,0000,0000,0000,,and turn both screws an equal amount
Dialogue: 0,0:03:26.33,0:03:28.19,Default,,0000,0000,0000,,With the machine now level
Dialogue: 0,0:03:28.19,0:03:30.72,Default,,0000,0000,0000,,front to back and side to side
Dialogue: 0,0:03:30.72,0:03:36.24,Default,,0000,0000,0000,,continue using the longer vial parallel to the X-axis
Dialogue: 0,0:03:36.24,0:03:39.96,Default,,0000,0000,0000,,We are now ready to check for twist in the base casting
Dialogue: 0,0:03:39.96,0:03:43.48,Default,,0000,0000,0000,,Start with the mill table at the front of the machine
Dialogue: 0,0:03:43.48,0:03:46.17,Default,,0000,0000,0000,,look at the position of the indicating bubble
Dialogue: 0,0:03:46.17,0:03:51.25,Default,,0000,0000,0000,,Move the Y-axis across its full travel stopping at the column
Dialogue: 0,0:03:51.25,0:03:55.08,Default,,0000,0000,0000,,At the column side, look to see which rear corner of the machine
Dialogue: 0,0:03:55.08,0:03:59.43,Default,,0000,0000,0000,,if any, is lowest as shown by the leveling tool
Dialogue: 0,0:03:59.43,0:04:02.40,Default,,0000,0000,0000,,In this video, the leveling tool is angled down
Dialogue: 0,0:04:02.40,0:04:08.05,Default,,0000,0000,0000,,at the right rear corner of the machine as we get to full axis travel at the column
Dialogue: 0,0:04:08.05,0:04:11.58,Default,,0000,0000,0000,,This shows the right rear corner of the machine is low
Dialogue: 0,0:04:11.58,0:04:15.73,Default,,0000,0000,0000,,The value is three marks away from zero
Dialogue: 0,0:04:15.73,0:04:18.35,Default,,0000,0000,0000,,Lift the right rear corner of the machine
Dialogue: 0,0:04:18.35,0:04:23.23,Default,,0000,0000,0000,,until the leveling tool reads zero
Dialogue: 0,0:04:23.23,0:04:25.98,Default,,0000,0000,0000,,Now move the table to the front of the machine
Dialogue: 0,0:04:25.98,0:04:28.79,Default,,0000,0000,0000,,and note which side is lowest
Dialogue: 0,0:04:28.79,0:04:34.04,Default,,0000,0000,0000,,Adjust the lowest corner up until the leveling tool reads zero
Dialogue: 0,0:04:34.04,0:04:38.63,Default,,0000,0000,0000,,Move the table across travel and each time adjust the leveling tool value
Dialogue: 0,0:04:38.63,0:04:43.71,Default,,0000,0000,0000,,to zero by lifting the low corner of the machine
Dialogue: 0,0:04:43.71,0:04:46.28,Default,,0000,0000,0000,,Usually the value will change several times
Dialogue: 0,0:04:46.28,0:04:49.44,Default,,0000,0000,0000,,and get nearer to zero with each adjustment
Dialogue: 0,0:04:49.44,0:04:56.61,Default,,0000,0000,0000,,Repeat this step until the bubble is adjusted to zero at both ends of the Y-axis travel
Dialogue: 0,0:04:56.61,0:05:01.50,Default,,0000,0000,0000,,Next, adjust the middle leveling screws until lowered onto the leveling pucks
Dialogue: 0,0:05:01.50,0:05:06.60,Default,,0000,0000,0000,,Hand-tighten each screw onto the puck until the puck stops turning
Dialogue: 0,0:05:06.60,0:05:11.84,Default,,0000,0000,0000,,Set each screw by tightening an additional 10 degrees
Dialogue: 0,0:05:11.84,0:05:13.91,Default,,0000,0000,0000,,With the middle screws tight the remaining
Dialogue: 0,0:05:13.91,0:05:18.10,Default,,0000,0000,0000,,steps in this process are: Re-measuring for Twist
Dialogue: 0,0:05:18.10,0:05:20.75,Default,,0000,0000,0000,,and measuring for Bow in the base casting
Dialogue: 0,0:05:20.75,0:05:23.26,Default,,0000,0000,0000,,and then measuring the Spindle Sweep.
Dialogue: 0,0:05:23.26,0:05:28.86,Default,,0000,0000,0000,,Any adjustments from this point forward will be done with the middle screws ONLY
Dialogue: 0,0:05:28.86,0:05:32.43,Default,,0000,0000,0000,,with both middle screws adjusted the same each time\N
Dialogue: 0,0:05:32.43,0:05:36.51,Default,,0000,0000,0000,,These adjustments should be very small as we are almost finished
Dialogue: 0,0:05:36.51,0:05:42.14,Default,,0000,0000,0000,,With the leveling tool still parallel to the X-axis, re-measure for twist
Dialogue: 0,0:05:42.14,0:05:44.49,Default,,0000,0000,0000,,Start at the operator side
Dialogue: 0,0:05:44.49,0:05:48.16,Default,,0000,0000,0000,,move to the middle of Y-axis travel
Dialogue: 0,0:05:48.16,0:05:51.90,Default,,0000,0000,0000,,and then to the Column side
Dialogue: 0,0:05:51.90,0:05:57.44,Default,,0000,0000,0000,,Adjust the middle screws to remove any twist caused when the screws were tightened
Dialogue: 0,0:05:57.44,0:05:59.98,Default,,0000,0000,0000,,Again, ONLY very small adjustments
Dialogue: 0,0:05:59.98,0:06:07.43,Default,,0000,0000,0000,,should be made to the middle screws while re-measuring the level values
Dialogue: 0,0:06:07.43,0:06:11.43,Default,,0000,0000,0000,,Next, measure for any bow, either up or down
Dialogue: 0,0:06:11.43,0:06:13.65,Default,,0000,0000,0000,,along the length of the Base Casting
Dialogue: 0,0:06:13.65,0:06:16.95,Default,,0000,0000,0000,,Place the Leveling Tool in the center of the Mill Table
Dialogue: 0,0:06:16.95,0:06:21.83,Default,,0000,0000,0000,,with the precision vial parallel to the Y-axis
Dialogue: 0,0:06:21.83,0:06:25.33,Default,,0000,0000,0000,,Look at the bubble position at the operator side
Dialogue: 0,0:06:25.33,0:06:28.73,Default,,0000,0000,0000,,at the middle of Y-axis travel
Dialogue: 0,0:06:28.73,0:06:31.54,Default,,0000,0000,0000,,and at the Column side
Dialogue: 0,0:06:31.54,0:06:36.68,Default,,0000,0000,0000,,If the measurement shows there is bow in the base casting in either the up or down direction
Dialogue: 0,0:06:36.68,0:06:41.56,Default,,0000,0000,0000,,use the middle screws to make adjustments
Dialogue: 0,0:06:41.56,0:06:43.98,Default,,0000,0000,0000,,Remember, only move the screws
Dialogue: 0,0:06:43.98,0:06:47.24,Default,,0000,0000,0000,,in small and equal amounts
Dialogue: 0,0:06:47.24,0:06:49.94,Default,,0000,0000,0000,,The tolerance for both the twist and bow measurements is
Dialogue: 0,0:06:49.94,0:06:57.48,Default,,0000,0000,0000,,0.0002" over 10" or 0.02mm over a meter
Dialogue: 0,0:06:57.48,0:06:59.81,Default,,0000,0000,0000,,Errors because of twist or bow will cause
Dialogue: 0,0:06:59.81,0:07:02.62,Default,,0000,0000,0000,,errors in the spindle tram values
Dialogue: 0,0:07:02.62,0:07:08.84,Default,,0000,0000,0000,,With the twist and bow adjustments complete carefully remove the leveling tool
Dialogue: 0,0:07:08.84,0:07:12.94,Default,,0000,0000,0000,,Attach the Test Indicator to the Magnetic Base
Dialogue: 0,0:07:12.94,0:07:17.37,Default,,0000,0000,0000,,Move the spindle head down to the middle of Z-axis travel
Dialogue: 0,0:07:17.37,0:07:21.40,Default,,0000,0000,0000,,Attach the magnetic base to the spindle
Dialogue: 0,0:07:21.40,0:07:27.96,Default,,0000,0000,0000,,Position the test indicator to measure a 10" or 250mm diameter circle
Dialogue: 0,0:07:27.96,0:07:31.43,Default,,0000,0000,0000,,Move the table to a position where the test Indicator tip
Dialogue: 0,0:07:31.43,0:07:34.28,Default,,0000,0000,0000,,will remain on the table's surface when facing both the
Dialogue: 0,0:07:34.28,0:07:37.26,Default,,0000,0000,0000,,front and column sides of the machine
Dialogue: 0,0:07:37.26,0:07:42.98,Default,,0000,0000,0000,,Moving the Z-axis in "tenths" mode, bring the Test Indicator down to contact the
Dialogue: 0,0:07:42.98,0:07:46.33,Default,,0000,0000,0000,,mill table and zero the test indicator
Dialogue: 0,0:07:46.33,0:07:49.82,Default,,0000,0000,0000,,Take a measurement every 90 degrees of rotation
Dialogue: 0,0:07:49.82,0:07:53.35,Default,,0000,0000,0000,,This provides two values along the Y-axis
Dialogue: 0,0:07:53.35,0:07:56.14,Default,,0000,0000,0000,,and along the X-axis
Dialogue: 0,0:07:56.14,0:07:58.80,Default,,0000,0000,0000,,Total Indicator Reading for all four positions
Dialogue: 0,0:07:58.80,0:08:05.16,Default,,0000,0000,0000,,should not exceed 0.0005 inches or 0.013 mm
Dialogue: 0,0:08:05.16,0:08:06.98,Default,,0000,0000,0000,,If the spindle sweep is not within
Dialogue: 0,0:08:06.98,0:08:10.49,Default,,0000,0000,0000,,specification along the Y-axis, we can use the
Dialogue: 0,0:08:10.49,0:08:14.30,Default,,0000,0000,0000,,middle screws to make very small adjustments to the sweep readings
Dialogue: 0,0:08:14.30,0:08:18.49,Default,,0000,0000,0000,,while changing the bow and twist values by a negligible amount
Dialogue: 0,0:08:18.49,0:08:22.01,Default,,0000,0000,0000,,Each time you make a middle screw adjustment to change spindle sweep
Dialogue: 0,0:08:22.01,0:08:25.65,Default,,0000,0000,0000,,be sure to re-zero your test indicator at the operator side
Dialogue: 0,0:08:25.65,0:08:28.84,Default,,0000,0000,0000,,before re-measuring the effect of your adjustment
Dialogue: 0,0:08:28.84,0:08:32.61,Default,,0000,0000,0000,,This will minimize the chance of confusing values
Dialogue: 0,0:08:32.61,0:08:35.04,Default,,0000,0000,0000,,In this video the test indicator starts
Dialogue: 0,0:08:35.04,0:08:38.14,Default,,0000,0000,0000,,with a value of 0 facing the front of the machine
Dialogue: 0,0:08:38.14,0:08:41.67,Default,,0000,0000,0000,,We see 0.0001 at the right hand quadrant
Dialogue: 0,0:08:41.67,0:08:44.68,Default,,0000,0000,0000,,-0.0002 at the back side of the table
Dialogue: 0,0:08:44.68,0:08:48.92,Default,,0000,0000,0000,,and 0.0002 at the left hand quadrant
Dialogue: 0,0:08:51.35,0:08:54.79,Default,,0000,0000,0000,,If the value at the back had been out more than 0.0005
Dialogue: 0,0:08:54.79,0:08:56.33,Default,,0000,0000,0000,,a very small adjustment
Dialogue: 0,0:08:56.33,0:08:58.03,Default,,0000,0000,0000,,to the middle leveling screws
Dialogue: 0,0:08:58.03,0:09:01.40,Default,,0000,0000,0000,,to either lift or drop the table would be required
Dialogue: 0,0:09:01.40,0:09:05.11,Default,,0000,0000,0000,,Only the values from front to back can be effectively changed
Dialogue: 0,0:09:05.11,0:09:09.35,Default,,0000,0000,0000,,by adjustment of the middle leveling screws
Dialogue: 0,0:09:09.35,0:09:13.01,Default,,0000,0000,0000,,If the adjustments to make spindle sweep better are very small
Dialogue: 0,0:09:13.01,0:09:15.98,Default,,0000,0000,0000,,you don't need to check bow and twist again
Dialogue: 0,0:09:15.98,0:09:18.40,Default,,0000,0000,0000,,Lock the leveling screws in place
Dialogue: 0,0:09:18.40,0:09:24.45,Default,,0000,0000,0000,,Tighten the locking nuts while holding the leveling screws so they don’t rotate
Dialogue: 0,0:09:24.45,0:09:27.14,Default,,0000,0000,0000,,The customer's machine is now at the proper height
Dialogue: 0,0:09:27.14,0:09:31.08,Default,,0000,0000,0000,,and level and is free of any twist or bow in the base casting
Dialogue: 0,0:09:31.08,0:09:35.81,Default,,0000,0000,0000,,This provides the basis for optimal machine accuracy