Fixture used for milling and boring support

Abstract

The invention discloses a fixture used for milling and boring a support. The fixture comprises a station I fixture body, a station II fixture body and a bottom plate, wherein the station I fixture body comprises a first positioning mechanism, a first clamping mechanism and a center positioning mechanism for strutting a workpiece outwards; the center positioning mechanism comprises a supporting seat, two pressing plates I, an angle pole, a guide screw and a driving device, wherein the two pressing plates I are symmetrically arranged at both ends of the supporting seat; the driving device comprises a gear mechanism and a driving oil cylinder; the gear mechanism comprises a double-row rack, gears II and a single-row rack, wherein the gears II are respectively meshed with the double-row rack, and the single-row rack is meshed with the gear II; one end of the angle pole is connected with the pressing plates I; the other end of the angle pole is connected with the single-row rack. According to the fixture disclosed by the invention, clamping can be performed rapidly, and is steady; the work support is not easy to deform, and therefore, the machining precision is improved; moreover, when the support of a symmetrical structure is milled, the center of the support can be rapidly and accurately positioned; moreover, the fixture can be suitable for volume production.

Description

technical field [0001] The invention relates to a fixture for processing a bracket, in particular to a fixture for milling and drilling a bracket. Background technique [0002] The bracket parts used in automobiles generally have complex forming surfaces, and are rib plate structures, and the overall rigidity is relatively poor. The traditional fixtures are easy to deform the workpiece when processing the milling surface and drilling of the bracket, which seriously affects the The processing quality of the workpiece; for the processing of symmetrical structure brackets, it is required that the clamp for clamping and positioning the workpiece has better centering performance. The traditional fixture uses manual centering, which is inefficient and time-consuming, which is not conducive to mass production. Contents of the invention [0003] Aiming at the deficiencies in the prior art, the present invention provides a fixture for processing bracket milling and drilling, which ...

AI Technical Summary

Problems solved by technology

[0002] The bracket parts used in automobiles generally have complex forming surfaces, and are rib plate structures, and the overall rigidity is relatively poor. The traditional fixtures are easy to deform the workpiece when processing the milling surface and drilling of the bracket, which seriously affects the The processing quality of the workpiece; for processing the symmetrical structure of the bracket, it is required that the clamp for clamping and positioning the workpiece has better centering performance. The traditional fixture adopts manual centering, which is inefficient and time-consuming, which is not conducive to mass production.

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