Fine milling cutting force simulation predicting method considering tool runout influence

A technology of micro-milling and cutting force, which is applied in the direction of metal processing equipment, metal processing machinery parts, milling machine equipment, etc., and can solve the problems of low prediction accuracy and ignoring the bottom cutting edge effect, etc.

Active Publication Date: 2019-09-24
NORTHEASTERN UNIV
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Problems solved by technology

The influence of the cutting edge motion trajectory on the instantaneous undeformed chip thickness is the key issue in establishing a cutting force theoretical prediction model; at present, the research content related to the chip thickness model mainly focuses on the axial offset runout of the micro-milling cutter, ignoring the tool axis tilt The influence of runout and t

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  • Fine milling cutting force simulation predicting method considering tool runout influence
  • Fine milling cutting force simulation predicting method considering tool runout influence
  • Fine milling cutting force simulation predicting method considering tool runout influence

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Embodiment Construction

[0081] In order to better explain the present invention and facilitate understanding, the present invention will be described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0082] The present invention provides a method for simulating and predicting the cutting force of micro-milling processing considering the impact of tool run-out for flat end mills, such as figure 1 shown, including the following steps:

[0083] Step S1, identify the preset tool runout parameters, and determine the cutting edge trochoidal trajectory offset during the micromilling process according to the tool runout parameters; the tool runout parameters are based on the tool diameter during the micromilling process The spatial geometric relationship of runout and tool tilt runout is determined.

[0084] Micro-milling tool runout is defined as the inclination phenomenon between the tool axis and the machine tool fixture and spindle system axis, that is, the to...

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Abstract

The invention discloses a fine milling cutting force simulation predicting method considering the tool runout influence. Aiming at micro-milling cutter cutting edge trochoid motion track calculation, on the basis of a tool coordinate system and a machining process geometric model, tool axis radial deviation and tool axis inclination are fully considered, and theoretical instant non-deformation chip thickness models are established for cutting edges at different positions based on an actual tool trochoid motion track; and cutting force prediction models are established in a shear effect leading cutting region and a plough effect leading cutting region separately based on a micro-milling cutter side edge shear effect, a micro-milling cutter side edge plough effect and a micro-milling cutter bottom cutting effect. The influences of tool runout, a cutting edge size effect and a bottom edge cutting effect are fully considered, and strong support is provided for reasonable optimization of cutting machining parameters while the cutting force prediction precision in the fine milling process is improved.

Description

technical field [0001] The invention belongs to the technical field of micro-milling manufacturing simulation technology, and in particular relates to a micro-milling cutting force simulation prediction method considering the impact of tool jump. Background technique [0002] With the continuous development of my country's aerospace, biomedical, national defense technology, emerging electronic technology, energy and environmental protection and other fields, there is an increasingly urgent demand for micro-milling of precision key parts that play a leading role and are characterized by complex structures and small scales. [0003] The simulation prediction of cutting force in the process of micro-milling is the premise and basis for the reasonable optimization of process parameters. For enterprises, the simulation of cutting force in micro-milling can reduce the test cost and shorten the development time of new products. Therefore, micro-milling The research on the simulatio...

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Application Information

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IPC IPC(8): B23C3/00B23Q17/00
CPCB23C3/00B23Q17/00
Inventor 张雪薇于天彪孙雪王钊
Owner NORTHEASTERN UNIV
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