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The
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To load the tool post: |
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1.Choose the desired cutting tool.
2.Loosen the tool post bolts so that the cutting tool can fit underneath the tool post bolts.
3.If necessary, place shims underneath the cutting tool so that the cutting tip is properly aligned with the workpiece.
4.Use a minimum of two tool post bolts to secure the cutting tool and tighten firmly (see
Figure 50).
Tool Post Bolts
Top
Handle
Tool
Figure 50. Tool holder and tool post.
5.Repeat Steps 1‑4 for the three remaining openings, as needed.
To set the correct spindle speed for your opera- tion, you will need to: 1) Calculate the spindle speed (RPM) needed for your operation, and 2) configure the spindle speed levers for the calcu- lated speed.
NOTICE
ALWAYS make sure the spindle is turned OFF and is at a complete stop before changing any gear configuration to prevent damage to the lathe gearing and voiding the warranty.
Calculating Spindle Speed
1.Use the table in Figure 51 to determine the recommended cutting speed for the workpiece material.
Note: Cutting speeds are expressed in SFM (surface feet per minute) that the workpiece moves against the cutter, which is different from the spindle speed (RPM).
Recommended Cutting Speeds
| Average Tool Speed (sfm) | |
Work Material | Rough Cuts | Finish Cuts |
Magnesium | 400 | 800 |
Aluminum | 350 | 700 |
Brass & Bronze | 250 | 500 |
Copper | 100 | 250 |
Cast Iron (Soft) | 100 | 250 |
Cast Iron (Hard) | 50 | 150 |
Mild Steel | 100 | 250 |
Cast Steel | 70 | 150 |
Alloy Steels (Hard) | 50 | 150 |
Tool Steel | 50 | 150 |
Stainless Steel | 60 | 180 |
Titanium | 90 | 200 |
Hi Maganese Steel | 40 | 100 |
Note: These values are based on HSS cutting tools. For carbide cutting tools, double the aver- age speed. These values are a guideline only. Refer to the MACHINERY’S HANDBOOK for more detailed information.
