To offset the tailstock:
1.loosen the hex bolts underneath both ends of the tailstock to release the clamping pres- sure between the top and bottom castings shown in the figure below.
Adjustment
Set Screw
(1 of 2)
Offset |
|
|
Indicator |
| Hex Bolt |
|
| (1 of 2) |
|
Figure 45. Tailstock offset controls.
2.rotate the adjustment set screws in opposite directions for the desired offset (see the illus- tration below).
Turn | Turn | Turn | Turn |
CCW | CW | CW | CCW |
Figure 46. Set screw adjustment in relation to
tailstock movement.
3.retighten the clamping hex bolts underneath the tailstock to secure the offset.
this is an essential adjustment that should be ver- ified or performed each time the tailstock is used to turn concentric workpieces between centers or immediately after offsetting the tailstock when turning a taper. if the tailstock is not aligned with the spindle centerline when it is supposed to be, turning results will be inaccurate along the length of the workpiece.
Aligning Tailstock to Spindle
Centerline
this is an essential adjustment that should be ver- ified or performed each time the tailstock is used to turn concentric workpieces between centers or immediately after offsetting the tailstock when turning a taper. if the tailstock is not aligned with the spindle centerline when it is supposed to be, turning results will be inaccurate along the length of the workpiece.
Items Needed | Qty |
Hex Wrench 6mm | 1 |
Wrench 17mm | 1 |
Round Stock 2" x 6" | 2 |
Precision Level | 1 |
To align the tailstock to the spindle center- line:
1.use the precision level to make sure the bedway is level from
2.Center drill both ends of one piece of round stock, then set it aside for use in Step 5.
3.use the other piece of round stock to make a dead center, and turn it to a 60° point, as illustrated in the figure below.
