PT3 Large Z Axis Ball Spline Shaft Alignment Procedure · TTRR. RII. IEEEXXX T...
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T T R R I I E E X X T T E E C C H H N NO O L L O O G G I I E E S S , , I I N NC C . . PT3 Large Z Axis Ball Spline Shaft Alignment Procedure Document No.: TR106xx Revision: 1.0 Date October 25, 2012
Transcript of PT3 Large Z Axis Ball Spline Shaft Alignment Procedure · TTRR. RII. IEEEXXX T...
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PT3 Large Z Axis Ball
Spline Shaft Alignment
Procedure
Document No.: TR106xx Revision: 1.0 Date October 25, 2012
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Revision History
Revision Version Date Author Description 1.0 10/25/2012 J. Maier Created document
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Approvals
Jeff Maier Date
Tim Wright Date
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Table of Contents 1 Purpose ........................................................................................................................................... 5
2 Cause of Misalignment .................................................................................................................... 5
3 Required Tools ................................................................................................................................. 6
4 Alignment Check .............................................................................................................................. 7
5 Alignment Procedure ....................................................................................................................... 8
5.1 Flat Spring Removal .................................................................................................................. 8
5.2 Flat Spring Carriage Removal .................................................................................................. 12
5.3 Z Axis Ball Spline Shaft Alignment ........................................................................................... 18
5.4 Flat Spring Carriage Re-Attachment ........................................................................................ 23
5.5 Flat Spring Re-Attachment ..................................................................................................... 28
6 Final Test ....................................................................................................................................... 32
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1 Purpose To provide instructions for vertically aligning the PT3 Large Z axis ball spline shaft to prevent binding
while rotating.
2 Cause of Misalignment Repeated use of the locking knob:
Can possibly push the ball spline shaft out of alignment.
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3 Required Tools The alignment procedure requires a 3mm Allen wrench and a 30mm open ended wrench as shown:
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4 Alignment Check Loosen the locking knob and rotate the carriage a full 360° as shown:
If there is any misalignment present, the rotation will not be smooth and will bind at various points of
rotation. If this is the case, alignment is required.
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5 Alignment Procedure
5.1 Flat Spring Removal The flat spring which helps to pull the ball spline shaft vertical must be removed. Locate the attachment
screw as follows:
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Loosen the attachment screw with a 3mm Allen wrench:
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While loosening the screw, hold the spool the spring is attached to in order to prevent the spring
retracting suddenly as it is under tension. After the screw is removed, the assembly should appear like
this:
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Hold the spring spool and allow it to gradually retract fully as shown:
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5.2 Flat Spring Carriage Removal Using the 3mm Allen wrench, loosen and remove the four spring carriage attachment screws as shown:
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Slide the spring carriage out as follows:
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5.3 Z Axis Ball Spline Shaft Alignment After removal of the flat spring carriage, the ball spline shaft and clamp are now accessible:
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Using the 30mm open end wrench, loosen the large nut holding the clamp and shaft in place:
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The clamp and shaft are now free to move. Grasp the clamp and slide the shaft to approximately the
center of its possible travel:
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Rotate the carriage a full 360° as before:
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Move the shaft loosened previously and rotate the carriage until the motion is smooth and does not
bind in any portion of the rotation. Once the correct shaft position has been achieved, use the 30mm
wrench to tighten the nut and clamp the shaft in place:
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5.4 Flat Spring Carriage Re-Attachment Replace the flat spring carriage:
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Insert and tighten all four screws with the 3mm Allen wrench:
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5.5 Flat Spring Re-Attachment Unroll a portion of the flat spring and guide it into position as shown:
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Pull the end of the flat spring out far enough to insert the screw:
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Insert the 3mm Allen wrench into the screw head. Use it to guide the end of the spring back to the block
on the vertical shaft. Be aware that the spring is under tension at this point and will pull upwards.
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Once the screw is in place and the thread started, tighten it all the way down:
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6 Final Test Rotate the carriage a full 360° with the clamp both all the way up and all the way down:
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Verify that carriage rotation is smooth with no binding.
