A vertical lathe is a machine tool used for metal processing. It can be used to process a variety of parts, including but not limited to:

1. Shaft parts: including shafts, sleeves, bearing seats, etc. Vertical lathes can perform processing operations such as turning, boring, and reaming of shaft parts.

2. Gear parts: including various gears, racks, etc. Gear hobbing can be performed using an indexing head or gear cutting tool on a vertical lathe.

3. Connection parts: such as bolts, nuts, pins, etc. Vertical lathes can perform processing operations such as turning, tapping, and drilling of connecting parts.

4. Disc parts: such as various discs, flanges, etc. Through the turntable on the vertical lathe, processing operations such as turning and boring of disk parts can be realized.

5. Mold parts: including injection molds, die-casting molds, stretching molds, etc. Vertical lathes can perform processing operations such as turning, milling, and cutting of mold parts.

6. Machine base parts: such as various machine bases, bases, etc. Vertical lathes can perform turning, milling, drilling and other processing operations on machine base parts.

7. Positioning parts: such as positioning pins, positioning blocks, etc. Vertical lathes can process positioning parts to ensure accurate positioning of parts during assembly.

8. Bearing parts: such as various bearing seats, bearing housings, etc. Vertical lathes can perform turning, milling, boring and other processing operations for bearing parts.

In fact, vertical lathes can be used to process parts of various shapes, sizes and materials. The specific processing processes and techniques will be adjusted and optimized according to the requirements and design of the parts.