Generating method of general cutter scanning body in five-axis machining

A general-purpose cutting tool and scanning body technology, applied in general control systems, instruments, computer control, etc.

Inactive Publication Date: 2013-09-25
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method uses Nurbs curve technology to solve the problem of unified description of common tool section sh

Method used

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  • Generating method of general cutter scanning body in five-axis machining
  • Generating method of general cutter scanning body in five-axis machining
  • Generating method of general cutter scanning body in five-axis machining

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Embodiment Construction

[0064] Describe the present invention below in conjunction with specific embodiment:

[0065] In this embodiment, the method for generating the scanning body of the universal tool in five-axis machining adopts the following steps:

[0066] Step 1: Divide the general tool section line in five-axis machining into four sections: bottom line, ring line, oblique line, and top line, and establish the Nurbs expression of the general tool section line as:

[0067] CS ( u ) = Σ i = 0 8 ω i · V i · N i , 2 ( ...

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Abstract

The invention provides a generating method of a general cutter scanning body in five-axis machining. Firstly, a section line of a cutter is expressed in a unified mode on mathematics according to the Nurbs curve technology, then an analytic expression mode of the surface of the cutter scanning body is obtained through the establishment of an instant coordinate system which changes dynamically along with the scanning motion of the cutter, then an analytic expression of a characteristic curve is solved through the enveloping principle, and finally, a complete cutter scanning body model is solved through the Nurbs curve fitting technology and the Boolean operation. Compared with a model generated through NX machining simulation, the cutter scanning body generated through the generating method of the general cutter scanning body in five-axis machining is more accurate.

Description

technical field [0001] The invention belongs to the technical field of multi-axis numerical control machining, in particular to a method for generating a general-purpose tool scanning body in five-axis machining. Background technique [0002] With the continuous development of manufacturing technology in recent years and the increase in the complexity of product geometry, CNC machining technology is increasingly used in the manufacturing process. In order to ensure manufacturing quality and reduce machining errors caused by NC programming, NC simulation technology is widely used. The scanning body structure formed by the tool movement during the machining process is the basis for NC simulation. Through the structure of the tool scanning body, collision detection, machining and forming accuracy inspection, and overcut / residue judgment can be performed. The tool scan body generation algorithm can also be widely used in other fields, such as robot motion space analysis, and th...

Claims

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Application Information

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IPC IPC(8): G05B19/4097
Inventor 常智勇孙惠斌孙博洋沈洁聂寇准
Owner NORTHWESTERN POLYTECHNICAL UNIV
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