LittleMachineShop.com HiTorque 7500, Руководство пользователя

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Turning
The most common use of a lathe is turning down the diameter of a work piece.
Manual Turning
Follow these steps to turn the outside diameter of a work piece.
To turn manually:
1. Put a tool bit in the tool holder and adjust the cutting edge to center height.
2. Angle the tool so that the front cutting edge forms an acute angle with the axis of the work
piece, as shown in the illustration below.
3. Move the carriage so that the tool bit is near the right end of the work piece.
4. Turn the lathe on. Adjust the speed to an appropriate speed for the material and diameter you
are working on. The LittleMachineShop.com Web site has a calculator to help you determine
appropriate cutting speeds at
https://littlemachineshop.com/speeds
5. Using the cross slide feed handle, slowly advance the tool bit into the work until it just
touches the surface of the work piece.
6. Move the carriage to the right so that the tool bit is past the end of the work piece.
7. Using the cross slide feed handle, advance the tool bit about 0.010".
8. Using the carriage hand wheel, move the carriage slowly to the left. As the tool bit meets the
work piece, it starts cutting.
Turning with Power Feed
The bench lathe incorporates a power carriage feed that can move the carriage.
Change Gears for Turning
There are two options for turning. Use the finer feed for finish turning and the coarser feed for
roughing cuts. The bench lathes are shipped with the gears set for finish turning.
Feed per Spindle Revolution A B C D
0.0018" (0.045 mm) 30 120 60 120
0.0049" (0.126 mm) 50 100 70 100
To learn how to change the gears , see “ Change Gears ” on page 30.
To turn with power feed:
1. Put a tool bit in the tool holder and adjust the cutting edge to center height.