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Workpiece three-dimensional surface topography simulating method based on ball head milling

A technology of three-dimensional surface and simulation method, which is applied in the direction of metal processing machinery parts, metal processing, metal processing equipment, etc., can solve the problems of low calculation accuracy and high calculation efficiency, and achieve the effect of optimizing processing parameters and tool movement strategy

Active Publication Date: 2012-06-13
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

This method solves the shortcomings of low calculation accuracy in the previous three-dimensional surface topography simulation methods, and is very suitable for high-precision ultra-precision machining, and can still maintain good calculation efficiency under the high-precision requirements

Method used

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  • Workpiece three-dimensional surface topography simulating method based on ball head milling
  • Workpiece three-dimensional surface topography simulating method based on ball head milling
  • Workpiece three-dimensional surface topography simulating method based on ball head milling

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0024] The specific implementation steps of the present invention are as follows:

[0025] (1) Set the simulation area and extract the tool points that affect the three-dimensional surface topography of the simulation area. In order to reduce the amount of calculation, it is only necessary to affect the selected simulation area S sim The tool position points of (u, v) can be extracted and modeled, which can reduce unnecessary calculations and satisfy the characteristics of the three-dimensional surface topography of the machined surface.

[0026] Such as figure 1 As shown, under the three-axis machining conditions, in order not to lose generality, any area on the workpiece surface is selected as the simulation area S sim (u, v), and record its bounds:

[0027] E 1 ...

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Abstract

The invention provides a workpiece three-dimensional surface topography modeling and simulating method based on the ball head milling. Firstly, a cutter location point influencing the generation of the three-dimensional surface topography in a simulation area is extracted, and a cutting edge sweeping point cloud model is established according to the combination of the extracted cutter location point with a kinematics model of a cutter in the processing process, then a three-dimensional surface topography sampling point within the range of the simulating area is set, and finally, the workpiecethree-dimensional surface topography in the simulation area is formed. In the invention, the relation among the cutter parameters, the machining parameters and the workpiece three-dimensional surfacetopography is established, so that the three-dimensional surface topography under the condition of ultraprecision machining can be clearly represented, and the technological parameter optimization ofthe workpiece three-dimensional surface topography can be further realized.

Description

technical field [0001] The invention relates to the field of ultra-precision machining, in particular to a method for modeling and simulating three-dimensional surface topography of workpieces, and is especially suitable for workpieces processed by ultra-precision ball end milling cutters. Background technique [0002] With the development of national defense, aerospace, energy, medical, optical components and other technologies and related industries, more and more basic equipment is required for some key components such as aerospace gyroscopes, computer drums, disks, polygonal prisms, large-diameter Spherical mirrors, and stereoscopic prisms with complex shapes put forward higher requirements. Such components have extremely high requirements on processing accuracy, surface roughness and three-dimensional surface topography distribution. Using conventional grinding, grinding, polishing and other methods for processing, not only the processing cost is high, but also it is di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23Q15/00B23C3/00
Inventor 彭芳瑜方正隆吴警闫蓉李斌
Owner HUAZHONG UNIV OF SCI & TECH
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