A positioning device and positioning method for multi-face milling of casting molds

Abstract

The invention relates to a positioning device and a positioning method thereof for multi-surface milling processing of a casting die, and belongs to the field of machinery manufacturing. The positioning device comprises an upper positioning device and a lower positioning device, wherein the upper positioning device is fixedly connected with a movable arm (7), the movable arm (7) is fixedly connected with a main transmission device (20) of a numerical control machine tool, the lower positioning device is attached to a to-be-processed right angle of a blank (18) which is arranged on a processing platform (21) of the machine tool, and a laser beam (19) which is emitted by a laser device (2) at the upper part of the upper positioning device and a positioning hole (4) at the upper part of the lower positioning device correspondingly form the positioning device. The positioning device has the advantages that the accurate positioning of a processing cutter during multi-surface processing is realized, and the requirement of quick and accurate positioning of multiple numerical control processing equipment is met.

Description

Technical field [0001] The invention belongs to the field of mechanical manufacturing, and in particular relates to a positioning device and a positioning method for multi-face milling of a casting mold. Background technique [0002] When the CNC milling machine performs multi-face "greater than or equal to two faces" milling of the casting mold "sand mold, wood mold or EPS white mold, etc.", it often encounters the problem of positioning reference changes: when the first surface is processed, When other surfaces need to be processed, in order to make the processing surface face up, the mold needs to be repositioned, causing the positioning datum to change. At this time, technicians are required to reposition the mold and the starting point of processing. At present, the commonly used positioning method is to determine the placement direction of the mold burrs through the dial indicator device, and then locate the processing starting point of the tool by moving the tool and visua...

AI Technical Summary

Problems solved by technology

[0002] When the CNC milling machine performs multi-face "greater than or equal to two faces" milling on the casting mold "sand mold, wood mold or EPS white mold, etc.", it often encounters the problem of changing the positioning reference: when the processing of the first surface is completed, When other surfaces need to be processed, in order to make the processing surface face up, the mold needs to be rearranged, causing the positioning reference to change. At this time, technicians need to reposition the mold and the starting point of processing

However, this positioning method has disadvantages such as poor precision and difficult control, which makes the size error of the processed mold larger, and even leads to bad results such as scrapping.

Therefore, the existing positioning methods are far from meeting the requirements of fast and precise machining.

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