Special clamp for multi-surface milling and boring of large parts

Abstract

The invention discloses a special clamp for multi-surface milling and boring of large parts, and belongs to the technical field of machining of artillery parts. The clamp comprises a clamp body, lifting bolts, a compression screw, a movable handle compression screw, a star-shaped pressing plate, positioning plates A, a positioning supporting column and a positioning plate B; supporting bodies are fixedly connected to the left side, the front side and the right side of the top of the clamp body, the compression screw is in threaded connection with the interior of the supporting body on the left side, and the positioning supporting column is connected in the supporting body on the right side; a movable jackscrew seat is arranged in a machine tool groove of a machine tool workbench and is in threaded connection with the movable handle compression screw; a long screw in the vertical direction is fixedly connected to the center of the upper plane of the clamp body in a threaded mode, and the positioning plates A are mounted on the front side and the rear side of the long screw and on the upper plane of the clamp body; the lifting bolts are in threaded connection to the two sides of the clamp body, and the positioning plate B is connected to the back of the supporting body on the front side of the upper plane of the clamp body. Grooves and holes in the three surfaces of a workpiece can be machined through one-time clamping.

Description

technical field [0001] The invention relates to a special fixture for multi-face milling and boring of large parts, which belongs to the technical field of machining of artillery parts. Background technique [0002] The breech of a certain artillery product is a large part with complex structure, which is difficult to process. Its shape is a cube with a through hole in the middle. It is necessary to process grooves and holes with complex structures on all sides of the part. The processing plan of this part in the scientific research stage is to align and clamp on ordinary milling machines and ordinary boring machines, and process the grooves and holes on each surface separately. After the successful trial production, the product is now transferred to mass production, and the processing procedures are more complicated and cumbersome. The production efficiency is not high, which affects the production schedule and economic benefits; in order to improve production efficiency, t...

AI Technical Summary

Problems solved by technology

The processing plan of this part in the scientific research stage is to align and clamp on ordinary milling machines and ordinary boring machines, and process the grooves and holes on each surface separately. After the successful trial production, the product is now transferred to mass production, and the processing procedures are more complicated and cumbersome. The production efficiency is not high, which affects the production schedule and economic benefits; in order to improve production efficiency, the machining plan adopts the newly introduced machining center (with tool magazine), but how to design and manufacture reasonable special fixtures to ensure that the machining center , one clamping can process grooves and holes on multiple surfaces of product parts at the same time, that is, to complete the processing of multiple processes, which is the key to improving processing efficiency in mass production of parts

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