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Integrated optimization method for process of milling free-form surface hardened steel mold using ball end

An optimization method, ball-end milling technology, applied in simulators, instruments, control/adjustment systems, etc., can solve the problems of complex analysis of ball-end milling process and uneven distribution of machining errors

Inactive Publication Date: 2017-12-01
HARBIN UNIV OF SCI & TECH
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Problems solved by technology

[0004] Aiming at the problem of complex analysis of the ball-end milling process and uneven distribution of machining errors caused by the variable shape and surface processing characteristics of the ball-end milling free-form surface hardened steel mold, a process of different processing area characteristics of the free-form surface hardened steel mold is proposed. Integrated Optimal Machining Method

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  • Integrated optimization method for process of milling free-form surface hardened steel mold using ball end
  • Integrated optimization method for process of milling free-form surface hardened steel mold using ball end
  • Integrated optimization method for process of milling free-form surface hardened steel mold using ball end

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Embodiment Construction

[0047] The free-form surface spherical head milling hardened steel mold process integration optimization method of the present invention comprises the following steps:

[0048] The first step is to establish a tool-making error track compensation method consistent with the tool contact area for areas with excessive curvature;

[0049] The tool contact area accurately reflects the machining state of the tool, and controls the radial cutting angle of the tool during cutting along the compensated tool path φ st and cut-out angle φ ex , the upper and lower boundaries of the axial tangential antenna θ up and θ low , are consistent with the nominal tool path during cutting, so as to ensure that the machining shape and normal contour error meet the requirements, such as figure 1 Shown; △ θ ( φ ) is the axial contact angle (radial contact angle) when cutting along the nominal tool path; δ 1 is the offset between the actual tool path and the nominal tool path caused by ...

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Abstract

The invention provides an integrated optimization method for the process of milling a free-form surface hardened steel mold using a ball end. Based on the machining features of a free-form surface, the machining area of the free-form surface is divided. For an area with large curvature, a cutter back-off error trajectory compensation method based on cutter contact area consistency is presented. For an area of the surface of which the curvature changes suddenly, an interpolation step length optimization method based on chord height error control is presented. In order to ensure the efficiency of machining, a feed rate optimization method is given for a flat area. Thus, an integrated technology optimization method for the process of milling a free-form surface hardened steel mold using a ball end is formed. The invention aims to improve the stability of the process of milling a free-form surface hardened steel mold using a ball end, and ensure the consistency of machining accuracy.

Description

technical field [0001] The invention relates to an integrated optimization method for milling a hardened steel mold with a free-form surface ball head, aiming at the complex analysis of the ball-end milling process and the distribution of processing errors caused by the variable shape and surface processing characteristics when the ball head mills a free-form surface hardened steel mold In order to solve the problem of unevenness, a process integration optimization processing method for the characteristics of different processing areas of free-form surface hardened steel molds is proposed. Background technique [0002] Due to its special functional characteristics, aesthetics and artistry, free-form surfaces are increasingly favored by automobile manufacturing companies. The design, processing and production of automobile panel molds are important links in automobile manufacturing. Because of the complex design of free-form surface molds and changeable free-form surfaces, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B17/02
CPCG05B17/02
Inventor 郑敏利彭尧尧杨琳
Owner HARBIN UNIV OF SCI & TECH
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