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A method for predicting the length of burrs in fiber reinforced composite materials with chamfering tools

A technology of chamfering tools and composite materials, applied in metal processing equipment, metal processing machinery parts, manufacturing tools, etc., can solve problems such as inapplicable models, and achieve the effect of saving tool and material costs

Active Publication Date: 2020-09-29
DALIAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] At present, there are related models for burr size prediction, such as the literature Hintze W, Hartmann D, Schütte C. Occurrence and propagation of delamination during the machining of carbonfibre reinforced plastics (CFRPs) – An experimental study [J]. Composites Science and Technology, 2011, 71 (15):1719-1726. And literature Hintze W, Brügmann F.Influence of curved workpiece contours on delamination during end milling of FRP[J].Procedia CIRP,2017,62:62-67. But the above model only considers the tool axis In the case of perpendicular to the fiber arrangement surface, the above model is no longer applicable when the tool axis is parallel to the fiber arrangement surface

Method used

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  • A method for predicting the length of burrs in fiber reinforced composite materials with chamfering tools
  • A method for predicting the length of burrs in fiber reinforced composite materials with chamfering tools
  • A method for predicting the length of burrs in fiber reinforced composite materials with chamfering tools

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Embodiment 1

[0091] In this embodiment, a grinding wheel is used to carry out experiments, that is, the chamfering tool is a grinding wheel with chamfering, to further illustrate and verify the reliability of the method of the present invention.

[0092] A method for predicting the burr length of fiber-reinforced composite materials with a chamfering tool, comprising the following steps:

[0093] Step 1: Measure the chamfering angle β and chamfering length b of the chamfering grinding wheel ∈ and grinding wheel end face radius r s , Figure 4 It is a schematic diagram of the relative dimensions of the chamfering wheel geometry. The measured chamfering angle of the chamfering grinding wheel β=132°, the chamfering length b ∈ =1.5mm, grinding wheel end face radius r s 20mm.

[0094] The second step: establish the tool-workpiece contour geometric model, and set up the single-factor experiment according to the calculation results of the cutting angle φ. The single-factor experiment paramet...

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Abstract

The invention discloses a predicting method for the chamfering tool machined fiber-reinforced composite material burr length, and belongs to the technical field of composite material machining. The method comprises the steps that in the implementation process, firstly, chamfering tool geometric dimension and shape contour data is measured, a tool-workpiece contour geometric model is built, the fiber configuration fabric internal chamfering tool wedge angle is calculated on the basis, a fiber configuration fabric internal chamfering tool-fiber mutual effect geometric model is built on the basisof the cut-out side fiber direction angle, and the position where non-breakage fiber is broken for the first time is determined and the burr length is calculated on the basis. According to the method, on the basis of the fiber-reinforced composite material burr production mechanism, the prediction model for the chamfering tool machined fiber-reinforced composite material production burr length isbuilt, the content involved in the method is comprehensive and complete, and operation is easy.

Description

technical field [0001] The invention belongs to the technical field of composite material processing, in particular to a method for predicting the burr length of fiber reinforced composite materials processed by a chamfering tool. Background technique [0002] Composite material is a new type of material combined by two or more materials through the composite process. It can not only retain the main characteristics of the original components, but also make the performance of each component complement each other and cooperate with each other through material design. In order to obtain superior performance that raw materials do not have, it has the advantages of high specific strength, high specific stiffness and high temperature resistance, and has been widely used in aerospace, energy, chemical and other fields. Fiber-reinforced composite material is a typical composite material, with fiber as the reinforcing phase and metal, ceramic or polymer resin as the matrix phase, it ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23Q17/09B23Q17/20
CPCB23Q17/0919B23Q17/0923B23Q17/20
Inventor 康仁科董志刚田俊超刘志强鲍岩朱祥龙高尚
Owner DALIAN UNIV OF TECH
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