This graduation project duty is to the 3L-10/8 air compressor crank components machine-finishing craft, the jig design, between the crank components processing technological process middle axle and the axle must have the position request ,processes two center bores first by the semifinished materials axis both sides localization ,by both sides center bore localization again thick, precision work various axes surface.Then after thick, the essence two axle diameter localization drills the thread, the keyseat and the mill crank end surface.,uses the unit clamp to process two slanting oil holes, finally thick, correct grinding various axes.
In the jig design process, mainly locates by V shape block and the support plate, depends on the straight clamp and the spring clamps, drills turns diameter two to be supposed to use long trades quickly drills the wrap, when drills turns the diameter incline hole uses the plane incline the jig body, when drills turns the diameter incline hole uses is the horizontal-type drilling machine, when face milling 2 V shape blocks and the milling cutter cannot interfere ,therefore V shape block altitude must reduce, the jig design must be convenient, be simple.