Component analysis:

1, the function of parts

Parts is the left bearing parts, it is a machine tool bearings, bearing hole of shaft installation, the side installation bolt axis can be clamped in the ear canal, the shaft is fixed. Loosen the bolt back axle rotating or sliding, also can use clamping degree to adjust the clearance between shaft and hole. Two parts the following method orchid location will wear two dowel pin in the pin hole, using the four bolts lieutenant fixed it.

2, parts of process analysis:

Its material for HT200, the material is gray cast iron has high strength, wear resistance, heat resistance and vibration resistance, suitable for wearing parts under high stress and requirements.

The left bearing processing instructions are as follows:

The general processing surface including: Φ 80 h9 large end face a-side and at the top of the small end face, thick over 3.2; Φ 80 h9 inner hole surface, thick over 1.6; End of the big end 13 hole and 4-4 - Φ Φ countersunk head of 20, inner hole surface roughness of 12.5, transition round surface coarse over 6.3; On the surface of the big end cone pin hole, roughness of 1.6; Chamfer; Side Φ 21 hole bore and Φ 25 h7 and Φ 38, coarse over 12.5, 3.2 and 3.2.

Here I want to be processed is Φ 10 cone pin hole is the roughness requirement of 1.6. His request is higher, the diameter is small, drill directly, cannot meet the accuracy requirements, can take to drill here - fine reaming processing method.