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Equivalent-cut-width cutter path generation method for machining convex profile flat-bottom cavity by flat-bottom milling cutter

A tool trajectory and processing trajectory technology, applied in the field of material processing, can solve the problem of controlling the cutting width and achieve the effect of enhanced controllability

Inactive Publication Date: 2016-10-12
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The above two methods have no way to effectively control the cutting width during the cutting process.

Method used

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  • Equivalent-cut-width cutter path generation method for machining convex profile flat-bottom cavity by flat-bottom milling cutter

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Embodiment Construction

[0019] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0020] The present invention designs a method for generating a constant cutting width tool path suitable for flat-bottomed milling cutters to process convex contours and flat-bottomed cavities. The method for generating the tool path can effectively control the change in cutting width during the machining process, making it as stable as possible In the set cut width value. Such as figure 1 As shown, the described tool path generation method specifically includes the following steps:

[0021] The first step is to set the tool radius R and the cutting width W, and make the tool diameter larger than the cutting width.

[0022] The second step, when processing, at first find the maximum inscribed circle of the peripheral convex contour of the flat-bottomed cavity to be processed, and the center O of the maximum inscribed circle is the first cutting poin...

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Abstract

The invention discloses an equivalent-cut-width cutter path generation method for machining a convex profile flat-bottom cavity by a flat-bottom milling cutter and belongs to the technical field of material machining. According to the method, the center of a maximum internally tangent circle of a peripheral convex profile of the flat-bottom cavity is used as a first cutting point of the cutter, a helix is made with the center used as an origin of a polar coordinate system and can intersect with the convex profile to be divided into multiple sections, a cutter path is generated with the convex profile and the helix sections inside the convex profile used as limitations, and non-cutting stroke sections in the generated path are optimized. The method has the advantages as follows: the cutting efficiency can be controlled effectively by the aid of the cut width, and the controllability is enhanced in the machining process; the cut width is effectively controlled, and the output power of a machine tool is basically kept stable; and the cutter of the machine tool can be effectively protected.

Description

technical field [0001] The invention belongs to the technical field of material processing, and in particular relates to a method for generating equal cutting width tool tracks for machining a flat-bottomed cavity with a convex profile by a flat-bottom milling cutter. Background technique [0002] Tool motion trajectory algorithm and mathematical model are the key technologies for implementing NC machining, and the accuracy of part processing can only be guaranteed under the premise of correct and reasonable tool path. The reasonable planning of the tool path is directly related to the cutting efficiency, processing quality and processing cost, and also affects the service life of the machine tool and the tool. [0003] There are mainly line cutting method and ring cutting method in tool path generation in cavity machining. According to the shape of the flat bottom cavity, it can be divided into circular cavity, square cavity, irregular cavity and so on. Both the existing ...

Claims

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Application Information

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IPC IPC(8): B23C3/00
CPCB23C3/00
Inventor 闫光荣汪再军刘乐方磊
Owner BEIHANG UNIV