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A kind of composite material variable-section dovetail blind groove machining method

A composite material and processing method technology, which is applied in the field of composite material variable cross-section dovetail blind groove processing, can solve the problems that cannot meet the processing requirements of composite materials, reduce the quality of the processed surface, and reduce the durability of the tool, so as to prevent chipping and ensure processing quality, effect of reduced feed rate

Active Publication Date: 2019-10-22
AEROSPACE RES INST OF MATERIAL & PROCESSING TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When the dovetail groove is a dovetail blind groove with variable cross-section made of composite materials, the two sides and the bottom surface of the dovetail groove are inclined relative to the bottom surface of the workpiece, and the extended end of the section is in the form of a blind groove structure that does not pass through. The traditional dovetail groove processing method will The end position of the dovetail groove produces an overcut problem, and the machining process needs to optimize the cutting path of the tool, that is, to complete the machining of the dovetail groove without interference between the tool and the workpiece
At the same time, the traditional dovetail groove processing method cannot meet the processing requirements of composite materials, and the durability of the tool is reduced. At the same time, the production cost is correspondingly increased and the quality of the processed surface is reduced.

Method used

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  • A kind of composite material variable-section dovetail blind groove machining method
  • A kind of composite material variable-section dovetail blind groove machining method
  • A kind of composite material variable-section dovetail blind groove machining method

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specific Embodiment

[0053] The workpiece to be processed is a resin-based glass fiber composite material formed by a molding process. The variable cross-section dovetail blind groove to be processed is located on the inner arc surface of the blank. The specific processing steps are as follows:

[0054] S1: Measure the size of the variable-section dovetail blind groove, the minimum distance between the dovetail edge of the dovetail blind groove L1=15mm, the minimum distance between the root of the dovetail blind groove L2=19.5mm, the angle between the inner surface and the bottom surface of the dovetail blind groove θ1=60°, the bottom surface and the bottom surface of the workpiece The included angle θ2=5°, the included angle θ3=8.25° between the dovetail side and the center line;

[0055] S2: Customize the tool according to the size recorded in step S1: 1) Customize the electroplated diamond end mill according to the size L1, and its diameter D1=10mm; 2) Customize the electroplated diamond dovetai...

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Abstract

The invention provides a method for machining a variable cross-section dovetail blind groove of a composite material, and belongs to the technical field of machining. The method includes the steps that a rough machining tool, a semi-finishing tool and an insert block are manufactured; the rough machining tool is used for removing the large allowance to form a rectangular cross-section groove; the semi-finishing tool is used for conducting transverse cutting feed from the outer side of the cross section of the rectangular cross-section groove, the tangent line of the maximal turning circle of the tool is located on the groove bottom face contour line of the variable cross-section dovetail blind groove, the allowances of the blind end face and the two side faces of the rectangular cross-section groove are removed, and accordingly a variable cross-section dovetail blind groove workblank with the allowance being reserved at the blind end included angle position is formed; and the insert block is embedded into the variable cross-section dovetail blind groove workblank, the allowance at the blind end included angle position of the variable cross-section dovetail blind groove is removed and a workpiece with the variable cross-section dovetail blind groove can be obtained. By the adoption of the machining method provided by the invention, overcut of the blind end is avoided; the tool durability is effectively improved, and production cost is reduced; and corner chipping happening in the machining process of the workpiece dovetail groove is prevented.

Description

technical field [0001] The invention belongs to the technical field of mechanical processing of composite materials, and in particular relates to a processing method for variable-section dovetail blind grooves of composite materials, which aims at realizing the machinability of variable-section dovetail blind grooves for composite materials. Background technique [0002] Dovetail groove belongs to a kind of mechanical structure, which is generally used for mechanical relative movement, and also used for assembly guidance, positioning and support. Because of its high precision and stability, it is widely used in machine tool manufacturing. In guide rails, slide grooves and other similar dovetail structure workpieces, the dovetail groove is generally a through structure, and the processing method is milling by slotting or custom dovetail groove forming milling cutter. [0003] When the dovetail groove is a dovetail blind groove with variable cross-section made of composite ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/00
Inventor 耿琼凌丽闫卫东王育杰裴天河李昕
Owner AEROSPACE RES INST OF MATERIAL & PROCESSING TECH
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