1, the casting is turned over, with the center line of 20 thickness as the parting surface, and the machining allowance of 3mm is left on each machining surface, and the small hole casting is solid.

2, lathe, with 60 big circle three claws clamping, 300 turn benchmark bottom, 800 turn rough turning 36 inner hole to 36.2, finish turning to the drawing requirements. Your course doesn't think that the roughness of lathe 1.6 can't be reached, does it? When we were studying at that time, we thought that turning could only guarantee 3.2, and the roughness like 1.6 needed grinding machine or fine boring).

3. Milling machine, A-plane positioning, pressure plate clamping, 100 disc milling cutter, 300 rpm processing 70 and 26 height dimensions.

4. Drilling machine, clamping with fixture, centering with 36 inner holes, aligning with 25 frustum shapes, drilling and reaming 15 holes with 0.5 reaming holes and 0. 1 reaming holes.

5. Insert the lathe and insert the keyway.

6, deburring, sharp edge blunt.

The feed speed can be considered as 0.25 in general and 0.05 in precision. Generally, the line speed is 80 ~ 100m.

This will definitely not happen now. Too slow.