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Method for predicating surface roughness and surface topography simulation of car milling compound machining

A technology for surface topography and surface machining, which is applied in the field of surface roughness and surface topography simulation and prediction of turning and milling compound cutting, and can solve the problems of inability to accurately describe the turning and milling compound machining process and low degree of bonding.

Inactive Publication Date: 2012-07-18
BEIHANG UNIV
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  • Application Information

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Problems solved by technology

It overcomes the shortcomings of long-term independent development of geometric simulation and physical simulation in the current field research, less integration, and inability to accurately describe the turning-milling composite machining process, and makes up for the shortcomings of the existing technology

Method used

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  • Method for predicating surface roughness and surface topography simulation of car milling compound machining
  • Method for predicating surface roughness and surface topography simulation of car milling compound machining
  • Method for predicating surface roughness and surface topography simulation of car milling compound machining

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Embodiment Construction

[0114] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0115] See Figure 9 , the present invention is a method for simulating and predicting the surface roughness and surface topography of turning-milling composite cutting. The specific steps of the method are as follows:

[0116] Step 1: Establish a unified tool position coordinate model for the overall knife and the insert knife

[0117] Solid carbide cutters and insert cutters have their own advantages in actual machining, but in the preliminary geometric modeling, because the milling cutter rotates at a high speed around its own axis, the outer contour of the cutter appears to be continuous after it rotates along the main axis , therefore, the establishment of the model can be carried out uniformly. In this way, the coordinates on the cutting edges of various tools such as ring cutters, ball-end cutters, and plane end mills can be ...

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Abstract

A method for predicating surface roughness and surface topography simulation of a car milling compound machining comprises the following six steps: step one, a modeling of a unified cutter position coordinate model of a whole cutter and an inserted blade cutter; step two, a modeling of the geometrical movement trace of a milling cutter cutting edge; step three, a consideration of influences of the vibration of the cutters to a workpiece surface morphology; step four, a microscopic surface morphology representation method; step five, a car milling compound machining basic structure function; step six, a simulation algorithm example and an orthogonal test method. The method combines the geometrical simulation and the physical simulation together, static and dynamic deformations which are produced when cutters cut under stress are fully considered, models for general car milling compound machining method of any angle are theoretically built, and a surface method of the roughness calculation of the car milling compound machining is deduced. The method for predicating surface roughness and surface topography simulation of the car milling compound machining has good practical values and broad application prospects in the technical field of machinery manufacturing processing.

Description

(1) Technical field [0001] The invention relates to a method for simulating and predicting the surface roughness and surface topography of turning-milling combined cutting. The deformation is superimposed on the geometric trajectory of the cutting edge, realizing the combination of physical simulation and geometric simulation. On the basis of considering the spatial geometric relationship between the tool and the workpiece, fully considering the static and dynamic deformation caused by the vibration of the tool and the workpiece when they are in contact with each other, and modeling the orthogonal turning-milling and axial turning-milling combined cutting methods, And it is extended to the general turning and milling processing method at any angle, and then the calculation method of the surface roughness and surface morphology of turning and milling combined machining is derived. The invention accurately describes the defects of the turning-milling composite processing proces...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 袁松梅郑微微
Owner BEIHANG UNIV
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