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Multistage diameter change milling cutter

A milling tool and milling technology, applied in the direction of milling cutting blades, milling cutters, manufacturing tools, etc., can solve the problems of insufficient tool rigidity, low cutting efficiency, serious interference, etc., to reduce cutting vibration, enhance applicability, and avoid interference. Effect

Inactive Publication Date: 2017-01-04
GUIZHOU YONGHONG AVIATION MACHINERY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention aims to provide a multi-stage variable-diameter milling tool to solve the serious interference and insufficient rigidity of the tool in the milling process of parts with complex curved surfaces and deep cavities with ultra-thin structures. , Unstable cutting accuracy, low cutting efficiency, easy to cause over-cutting, under-cutting, and high scrap rate of defective products

Method used

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Embodiment

[0026] To be processed as Figure 1-2 For the impeller part shown, the thinnest part of the impeller blade is 1.2mm, and the thickest part is 1.8mm. It has a complex curved surface structure with a deep cavity, and the milling tool is prone to cutting vibration during manufacturing. Such as Figure 4 As shown, use a multi-stage variable diameter milling cutter with a diameter of ultrafine particle carbide ball head of Ф5mm, the first stage Ф4mm straight shank variable diameter, the second stage tapered diameter 5°, the third stage tapered diameter 8°, The fourth-stage reducing taper is 10°. The chamfer 5 set on the multi-stage variable diameter node is one place of R3mm, four places of R40mm, and one place of R100mm. The diameter of the cutter bar 2 at the junction of the cutter head 3 and the first-stage variable diameter is Ф4mm, and the diameter of the tool handle 1 is Ф10mm. The multi-stage variable-diameter cutter bar of the multi-stage variable-diameter milling tool is...

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Abstract

The invention discloses a multistage diameter change milling cutter. The multistage diameter change milling cutter comprises a shank; the front end of the shank is a multistage cutter rod with gradually reduced diameter; the front end of the cutter rod is a cutter bit; every two adjacent diameter change sections on the multistage cutter rod are conical transitions; chamfering angles are arranged at one ends, towards the shank, of the conical transitions; and multiple milling grooves are peripherally spaced in the outer wall of the multistage cutter rod. The multistage diameter change milling cutter is excellent in rigidity during cutting, effectively reduces the cutting vibration, can insert the thinner front end thereof into a deeper cavity for machining, enhances the machining adaptability, improves the manufacturing precision of complex curved surface structural parts of narrow deep cavities and deep cavity ultrathin structural parts, improves the machining efficiency, and effectively guarantees the production quality stability.

Description

technical field [0001] The invention relates to the technical field of mechanical processing, in particular to a multi-stage variable-diameter milling tool used for processing high-tech aviation and aerospace products with narrow and deep cavities and ultra-thin structures. Background technique [0002] With the rapid development of aviation, aerospace technology, structure technology, material technology and computer integrated manufacturing technology, the design of parts with complex curved surface structures with narrow and deep cavities and parts with ultra-thin structures with deep cavities is becoming more and more complicated, and the manufacturing accuracy and The technical requirements are getting higher and higher, and the application range is getting wider and wider. Especially in the field of aerospace industry, the ratio of height (h) to thickness (δ) of many parts is extremely large, and the cutting environment is poor. For such typical weakly rigid parts wit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23C5/02
CPCB23C5/02B23C2200/088B23C2210/40B23C2215/44
Inventor 吕仕强施发国宋玉祥龙召木
Owner GUIZHOU YONGHONG AVIATION MACHINERY
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