Thin-walled cylindrical part end face machining fixture

Abstract

The invention discloses a thin-walled cylindrical part end face machining fixture which comprises a bottom plate. Parallel supporting seats are fixed onto the bottom plate through bottom plate taper pins and bottom plate screws, a connecting ring is hinged to one side of the upper end face of each supporting seat, a pin is arranged on the other side of the upper end face of each supporting seat, each connecting ring is connected with the side wall of a pressing cover through a pressing cover taper pin and a pressing cover screw, hinged bolts sleeve the pins, the pressing covers are pressed on the supporting seats through locking nuts on the hinged bolts, and a lower positioning sleeve and an upper positioning sleeve are fixed into grooves formed by the supporting seats and the pressing covers through screws respectively and combined to form a continuous cylindrical positioning sleeve. A thin-walled cylindrical part is radially positioned by the upper positioning sleeve and the lower positioning sleeve which are parallel, the thin-walled cylindrical part is axially positioned by positioning blocks on the side walls of the supporting seats, the thin-walled cylindrical part end face machining fixture is convenient in clamping operation, high in efficiency and convenient to detach, maintain and replace, shaking of a workpiece to be machined in the machining process is avoided, and rejection rate is reduced.

Description

Technical field [0001] The invention belongs to a processing fixture for parts, in particular to a processing fixture for the end face of thin-walled cylindrical parts. Background technique [0002] At present, the turning fixtures for thin-walled cylindrical parts mainly adopt manual clamping and automatic expansion core clamping. The disadvantages of the manual clamping device are that the operator's labor intensity is high and the labor productivity is low; the automatic core expansion fixture is more complicated to install and difficult to repair and replace. [0003] Moreover, the current expansion core clamping structure also has many problems in terms of structure and use. Since the processed thin-walled cylindrical parts are relatively long, in order to ensure that the thin-walled cylindrical parts are tightened, the expansion core should be correspondingly lengthened. The elongated expansion core is prone to tremor during the processing, resulting in the processed thin-wa...

AI Technical Summary

Problems solved by technology

The disadvantage of manual clamping device is that the labor intensity of the operator is high and the labor productivity is low; the automatic expansion core clamp is more complicated to install and more difficult to maintain and replace.

[0003] Moreover, the current expansion core clamping structure also has many problems in terms of structure and use.

Since the thin-walled cylindrical parts to be processed are relatively long, in order to ensure that the thin-walled cylindrical parts are tightened, the expansion core should be lengthened accordingly. The extended core is prone to trembling during processing, resulting in the processing of thin-walled cylindrical parts. increased scrap rate

The main material of the expansion core clamping structure is harder than the material of the processed thin-walled cylindrical parts, which often causes the processed thin-walled cylindrical parts to deform and damage the workpiece

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