Five-axis side milling cutting force predicting method based on ACIS platform

A cutting force prediction and milling technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as not reflecting processing conditions

Active Publication Date: 2012-08-01
SHANGHAI JIAO TONG UNIV +1
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Problems solved by technology

[0004] Aiming at the above-mentioned deficiencies in the prior art, the present invention provides a cutting force prediction method for five-axis side milling based on the ACIS platform, which solves the problem of assuming that there is no eccentricity between the tool axis and the spi

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  • Five-axis side milling cutting force predicting method based on ACIS platform
  • Five-axis side milling cutting force predicting method based on ACIS platform
  • Five-axis side milling cutting force predicting method based on ACIS platform

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Embodiment Construction

[0034] The embodiments of the present invention are described in detail below: the present embodiment is implemented under the premise of the technical solution of the present invention, and detailed implementation and specific operation process are provided, but the protection scope of the present invention is not limited to the following implementation example. The process flow of the five-axis CNC side milling cutting force prediction method proposed by the present invention is as follows figure 1 shown.

[0035] In this embodiment, 1 is the tool axis, 2 is the handle, 3 is the tool, 4 is the cutting edge, 5 is the tool reference point, 6 is the spindle axis, 7 is the actual tool reference point, 8 is the tool position point, dF r，i，j is the unit radial cutting force of the i-th blade on the j-th disc, dF t，j，k is the unit tangential cutting force of the i-th blade on the j-th disc, dF a，j，k is the unit axial cutting force of the i-th blade on the j-th disc. {O r ;X r...

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Abstract

The invention discloses a five-axis side milling cutting force predicting method based on an ACIS platform, and is used for solving the problem that the real machining condition cannot be reflected in conventional cutting force calculation. The method comprises the following steps of: fitting the edge of a cutter with unequal space width through a B spline, simulating by a finite element method to acquire a cutting force, calibrating dynamic eccentric parameters of the cutter by using the cutting force data, correcting cutter position data by using the eccentric parameters of the cutter to acquire actual cutter reference points, extracting an instantaneous cutter-workpiece engagement region by using the actual cutter reference points and using ACIS as a platform, calculating the actual movement locus and the instantaneous cutting thickness of the edge by using the actual cutter reference points, and calculating the instantaneous cutting force by using the calculated cutting thickness and the calibrated cutting force coefficients. According to the method, the instantaneous cutting thickness is calculated by using the actual movement locus of the edge, so that the real machining condition is reflected, and the predicting accuracy of the cutting force is improved.

Description

technical field [0001] The invention relates to the technical field of computer aided manufacturing, in particular to a cutting force prediction method for five-axis side milling based on an ACIS platform. Background technique [0002] In the field of machinery manufacturing, milling is widely used in the manufacture of complex parts in the fields of aviation, aerospace, molds and automobiles, and is one of the important processing methods to obtain high-precision complex surfaces. Compared with traditional point milling, five-axis side milling uses side edges for line contact processing, which can achieve higher processing efficiency and surface quality. Cutting force is an important basis for optimizing process parameters and improving machining efficiency. Therefore, it is of great significance to predict cutting force for side milling of complex curved surface parts. [0003] The current cutting force calculation methods for five-axis side milling are all aimed at const...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 王宇晗毕庆贞余亮
Owner SHANGHAI JIAO TONG UNIV
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