Base-adjustable fixture for elongated workpiece with outer contour needing to be milled

Abstract

A base-adjustable fixture for an elongated workpiece with the outer contour needing to be milled comprises a base, movable portal devices, a positioning device and a control system. A transverse guide rail is mounted at each of the upper and lower edges of the base, and limiting devices for limiting a workblank are arranged on the upper surface of the base at intervals according to the shape of the outer contour of the workblank needing to be machined. Movement of a portal frame structure of each movable portal device along the transverse guide rails is controlled by a portal frame cylinder. The positioning device comprises a press-down positioning device and a plurality of rotatable angle positioning devices, wherein the press-down positioning device is used for pressing down the middle of the workblank, and the rotatable angle positioning devices are used for pressing down the outer contour of the workblank. The control system controls the movable portal devices to move according to machining movement trails of a cutter and controls single or multiple positioning device bodies in the positioning device to loosen to make way for a cutter path. The base-adjustable fixture for the elongated workpiece with the outer contour needing to be milled has the advantages that deformation of the elongated workpiece during machining is avoided, machining efficiency is improved, the positioning device can be controlled to make way for the machining path of the cutter, operation safety is improved and machining precision is high.

Description

technical field [0001] The invention relates to the field of machining fixtures, in particular to a base adjustable fixture for a long workpiece whose outer contour needs to be milled. Background technique [0002] Existing workpiece processing that requires milling of the outer contour often requires multiple manual assembly and disassembly of the workpiece pressing block, which takes a long time to process, high cost, and lacks operational safety, and generally only presses down around the workpiece. There is no pressing effect on the middle part of the workpiece, and the vibration generated by milling of the large workpiece will be transmitted to the entire workpiece during processing, so that the workpiece cannot be processed smoothly, and the machining accuracy is not high, and the middle part of the large workpiece without compression is prone to bulge In addition, when the tool is processed to the predetermined outer contour area of ​​the workpiece and the worker forg...

AI Technical Summary

Problems solved by technology

[0002] Existing workpiece processing that requires milling of the outer contour often requires multiple manual assembly and disassembly of the workpiece pressing block, which takes a long time to process, high cost, and lacks operational safety, and generally only presses down around the workpiece. There is no pressing effect on the middle part of the workpiece, and the vibration generated by milling of the large workpiece will be transmitted to the entire workpiece during processing, so that the workpiece cannot be processed smoothly, and the machining accuracy is not high, and the middle part of the large workpiece without compression is prone to bulge In addition, when the tool is processed to the predetermined outer contour area of ​​the workpiece and the worker forgets to remove the workpiece pressing block, a collision will occur, which is easy to damage the fixture or cause injury to the worker, and the operation safety is low. , the labor intensity of the workers is high

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