O P E R A T I O N | For Machines Mfg. Since 3/11 |
3.Use the tailstock handwheel to feed the quill out from the casting approximately 1".
Note: Do not extend the quill more than 2" or stability and accuracy will be reduced.
4.Insert the center into the tailstock quill.
5.Seat the center firmly into the quill during workpiece installation by rotating the quill handwheel clockwise to apply pressure, with the center engaged in the center hole in the workpiece.
Note: Only apply enough pressure with the tailstock quill to securely mount the workpiece between centers. Avoid overtightening the center against the workpiece, or it may become difficult to remove later, and it will result in excessive friction and heat, which may damage the workpiece and center.
Removing Center from Tailstock
To remove the center from the quill, hold onto it with a gloved hand or shop rag, then rotate the tailstock handwheel counterclockwise to draw the quill back into the casting until the center releases.
If the center does not come loose by retracting the quill, extend the quill to expose the slot shown in Figure 53, then use a drift key to remove the center.
Drift Key Slot
Figure 53. Drift key slot in the side of the quill.
Mounting Workpiece Between Centers
1.DISCONNECT LATHE FROM POWER!
2.Drill center holes in both ends of the workpiece.
3.Install a dead center in the spindle with a lathe dog and a chuck or faceplate, then install a live center or
4.Lubricate the workpiece center holes, then mount the workpiece between the centers and hold it in place with light pressure from the tailstock center.
5.Seat the center firmly into the quill by rotating the tailstock handwheel clockwise to apply pressure against the workpiece (see the example in Figure 54).
Only apply enough pressure to securely mount the workpiece between centers. Avoid
