Honeycomb material large entrance angle low damage processing cutter and honeycomb material large entrance angle low damage processing method

A technology for honeycomb materials and processing tools, which is applied to the cutting tools of sawing machines, manufacturing tools, metal processing equipment, etc., can solve the problems of low damage processing of honeycomb materials, etc., to reduce surface burrs, reduce surface burrs, and discharge comfortably. Effect

Active Publication Date: 2018-10-12
DALIAN UNIV OF TECH
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Problems solved by technology

[0005] Aiming at the current situation that the existing technology still cannot realize low-damage processing of honeycomb materials,

Method used

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  • Honeycomb material large entrance angle low damage processing cutter and honeycomb material large entrance angle low damage processing method
  • Honeycomb material large entrance angle low damage processing cutter and honeycomb material large entrance angle low damage processing method
  • Honeycomb material large entrance angle low damage processing cutter and honeycomb material large entrance angle low damage processing method

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Embodiment Construction

[0051] The present invention will be further described below in conjunction with the accompanying drawings.

[0052] Such as figure 1 As shown, this is the processing process of the large-cut angle and low-damage processing method when the honeycomb material is processed on a large-area plane. Since the tool 1 is not integrated with a crushing blade, the machining allowance area of ​​the workpiece 2 must be provided with longitudinal grooves 24 and transverse grooves 25 to achieve chip breaking during cutting, and the groove distance is selected according to corresponding calculations.

[0053] Such as figure 2 As shown, the cutting angle θ has a significant effect on the processing quality in the processing of honeycomb materials. The test results show that when the cutting angle is 90°≤θh and cutting speed v c The included angle, while the hole wall vector n h Refers to the vector pointing from the cut-off end to the unprocessed area along the direction of the cell wall ...

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Abstract

The invention discloses a honeycomb material large entrance angle low damage processing cutter and a honeycomb material large entrance angle low damage processing method. The processing cutter comprises a toothed cutterhead and a cutter bar component, wherein the cutter tooth of the toothed cutterhead is provided with a primary cutting edge, a secondary cutting edge and a side edge. According to the invention, a circular disc type cutter is adopted to cut and process honeycomb material; the position relation between the cutter and a workpiece hole lattice is determined according to theoreticalcalculation, so that the range of the entrance angle theta at a single-layer hole wall is equal to or greater than 90 degrees and less than 165 degrees as much as possible during the machining process, and the surface burr is effectively reduced; and in addition, the processing cutter with a positive edge dip angle is utilized to move the position of an entry point inwards, so that hole wall tearing due to defect expansion is avoided, and low damage processing of the molded surface, the chamfer and the cutting side of the honeycomb material is realized. The processing cutter can effectively cut off the low-rigidity complicated hole wall structure in the honeycomb material surface and reduces the surface burr; and moreover, the cutting edge inclination angle of the primary cutting edge facilitates inward movement of the entry point position, so that longer hole wall tearing due to defect expansion is avoided.

Description

technical field [0001] The invention belongs to the field of mechanical processing of honeycomb materials, and in particular relates to a processing tool and a processing method with a large cutting angle and low damage of honeycomb materials. Background technique [0002] Honeycomb materials are often used as sandwich materials bonded and solidified with metal or composite skins to form sandwich components. Because of their advantages of light weight, high strength, insulation, flame retardant and vibration absorption, they are widely used in the automotive industry, aerospace and other fields. For example, there are more than 280 honeycomb sandwich components in the Zhi-9 helicopter, 85% of the internal structure of the B-58 high-speed military bomber uses honeycomb sandwich materials, and a large proportion of the flaps, fairings, and hatches of the C919 large civil aircraft The use of honeycomb sandwich materials. [0003] With the expansion of the application of honeyc...

Claims

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Application Information

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IPC IPC(8): B23D61/02B23D45/00
CPCB23D45/003B23D61/02
Inventor 鲍永杰许启灏高航康仁科
Owner DALIAN UNIV OF TECH
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