Hole flanging female die, manufacturing method thereof, storage medium and CNC machine tool

Abstract

The invention relates to the field of machine tool machining, in particular to a hole flanging female die, a manufacturing method thereof, a storage medium and a CNC machine tool. The method comprisesthe steps: reading a 3D graph of the hole flanging female die; defining the opening direction of a concave hole for hole flanging on the hole flanging concave die as the vertical direction, and obtaining the concave hole specified by an engineer on the 3D graph, the material thickness t0 of the concave hole, the diameter D of a hole flanging punch, the radius r of a hole flanging inner angle, thediameter d of a pre-punched hole and the height h of a hole flanging straight body; according to the material thickness t0, the hole flanging punch diameter D, the hole flanging inner angle radius r,the pre-punching hole diameter d and the hole flanging straight body height h, calculating a mold pulling angle x required by the specified concave hole, and closing the bottom edge of the side wallsurface of the specified concave hole inwards until an included angle formed by the side wall surface and the vertical direction reaches the mold pulling angle x; and converting the 3D graph after concave hole correction into an NC code, and transmitting the NC code to an external CNC machine tool for processing. The problem that hole flanging is not straight is solved, and the mold repairing costis reduced.

Description

technical field [0001] The invention relates to the field of machine tool processing, in particular to a boring die and its manufacturing method, a storage medium and a CNC machine tool, wherein a computer program is stored in the storage medium, and the program can be executed by a processor of the CNC machine tool to realize the method. Background technique [0002] During the hole turning process, the material to be turned will elongate in the circumferential direction and cause its thickness to decrease. Since the gap between the hole turning punch and die is double the thickness of the material, when the thickness of the hole turning material is reduced, the hole turning punch and die and The material cannot fit well, resulting in a certain gap, causing the hole to be curled and not straight. The conventional solution is to make the gap of the hole as a whole smaller, but this will increase the force of the hole and shorten the life of the mold. It also makes the entire...

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Problems solved by technology

[0002] During the hole turning process, the material to be turned will elongate in the circumferential direction and cause its thickness to decrease. Since the gap between the hole turning punch and die is double the thickness of the material, when the thickness of the hole turning material is reduced, the hole turning punch and die and The material cannot fit well, resulting in a certain gap, causing the hole to be curled and not straight. The conventional solution is to make the gap of the hole as a whole smaller, but this will increase the force of the hole and shorten the life of the mold. It also makes the entire hole-turning part too thin, reducing the strength of the hole-turning part

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