Unit alignment powerpoint

Materials needed:• (1) Set of jaws for aligning unit• (1) Aligning rod• (1) Dial indicator• (1) Dial indicator support• (1) _(size?)_ hex wrench• (1) Brass hammer• (1) Hand-held mirror

All operators are advised to read through the entirety of

the following document before beginning alignment

Locate station #1 on machine-turretStation #1 is clearly marked by the master-jaw numbers, as well as an additional marking on the side of the turret. Once located, rotate turret station #1 to front/back door for ease of access

1a) Open jaws in station #1. Once jaws are open, remove fixtures from master jaws by loosening the nut on the back of each master jaw1b) Clean master jaws in station #1 with air hose. Also wipe with cloth, if needed

Step 1

1c) Place alignment jaws into empty nest in station #1 master jaws. After ensuring proper placement, secure alignment jaws to master jaws by tightening the nut located in back of each master jaw

1d) Place alignment rod in between alignment jaws. After ensuring proper clearance and safety, clamp alignment jaws onto the alignment rod by means of machine-control panel

Step 1

Before adjusting any features of the unit, check the current centering of the unit by rotating the dial indicator around the alignment rod and recording indicator change. If the unit error is less than 0.05mm, then all adjustments can be made without unscrewing the bolts in back of the unit. (This removes steps 2 and 7) In the case that the dial indicates an error less than .05mm, then only follow steps 3, 4, 5, 6, and 8. If the error is greater than .05mm, then

proceed to follow each of the following steps

Loosen the spindle unit bolts located in the back of the machine-frame

Only loosen bolts that have been painted with white paint

Do not loosen any other bolts

2a) After loosening each bolt, snug bolts until resistance is felt. Do not tighten bolts

Step 2

Inside of machining area, loosen the 4 bolts that secure the unit wedges to the machine frame

3a) Unscrew bolts completely

3b) Remove all washers, and set aside

3c) Insert the 4 bolts into their proper locations in contact with each wedge. Tighten bolts only a few turns, so that each bolt protrudes clearly from the machine frame

Step 3

3d) With brass hammer, tap the head of each bolt until the wedge loosens from the machine sleeve and unit body, and can freely be moved forwards/backwards by means of holding the bolt head. When using the brass hammer, use great care to only contact the head of each bolt. Multiple attemps to loosen the wedge may be needed

3e) Unscrew bolts completely, and place the brass washer,black washer, and O-ring back onto the bolt. Check to ensure proper thread structure. In case of any bolt damage, discard damaged bolts and replace with new bolts

Step 3

Secure dial-indicator4a) Secure dial-indicator support to head of spindle

4b) Secure dial-indicator to dial-indicator support

4c) Using machine control-panel, move spindle along Z-axis until the dial-indicator is above the alignment rod

4d) Adjust dial-indicator until proper contact is made with alignment rod

Step 4

Rotate spindle head by hand until dial-indicator is aligned with any 1 of the 4 wedge bolts. This is reading A, and the selected bolt will be bolt A

5a) Set dial-indicator to 0. Slowly rotate the spindle head 180 degrees to the opposite bolt, and record the measure of change observed on the dial-indicator . This is reading B, and the bolt opposite to bolt A will be bolt B

READ following slides before continuing with step 5:

Step 5

Each bolt, when tightened, will slowly move the corresponding wedge closer to the inside of the

machining area - thus moving the unit slightly. When the wedge moves, the taper on the wedge causes the unit to slightly adjust in the direction of the opposite

bolt. The unit alignment is completed by adjusting each wedge until proper-alignment is achieved

If the dial indicates a positive change from reading A to reading B, then the bolt from reading A must be tightened to

move the unit closer to the bolt from reading B. If the dial indicates a negative change from reading A to reading B, then

the bolt from reading B must be tightened

When tightening a bolt, the opposite wedge must be loosened to allow room to move the unit. To loosen an

individual wedge, loosen the bolt until there is sufficient space to contact the bolt head with the brass hammer and free the wedge. If the opposite wedge is not freed, tightening a bolt

may result in damage occuring on the bolts or wedges

5b) After aligning bolts A and B to within 0.02mm, select one of the remaining 2 bolts, and rotate the spindle head 90 degrees until the dial-indicator is aligned with the selected bolt. This is reading C, and the bolt selected will be bolt C

5c) Set dial-indicator to 0, and rotate spindle head 180 degrees to the opposite bolt. This is reading D, and the bolt selected will be bolt D - opposite to bolt C

5d) Align bolts C and D to within 0.02mm of 0

Step 5

Return to back of machine frame, and tighten the bolts that secure the unit to the machine frame

Tighten only the bolts that are painted white. Tighten approximately 1/4 turn. Do not over-tighten

To achieve best results, first tighten the bolts at the top of the unit, then tighten remaining bolts in decreasing order of

height

Step 6

Return to inside of machining area, and make remaining adjustments to the

wedge-bolts (instructions recorded in section 5) until desired alignment is

achieved

Step 7

After desired alignment is achieved, ensure each wedge bolt is secure by tightening until snug. Do not over-

tighten. Confirm unit alignment after securing all bolts

Confirm proper unit alignment by moving the unit up and down the Z-axis, and observing the indicator results as it

moves along the alignment rod. If results show proper alignment, do not adjust

wedges. If results indicate error, repeat steps 5 a-e

Align all other units to the alignment jaws and alignment rod in station #1 on the machine turret.Rotate station #1 on turret to the proper unit(s) in

need of alignment

If alignment issues persist, consult instructions on how to align master jaws, or contact Buffoli customer

service

Via Stretta, 40 - 25128 BRESCIA (ITALY) Tel. +39 030

20155 0 Fax +39 030 20155 555

www.buffoli.com -

[email protected]