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Twist-drill oil-groove milling cutter

A twist drill and oil groove technology, which is applied in milling cutters, drill repairing, milling machine equipment, etc., can solve the problems of unstable cutting, inconvenient sharpening, small chip groove, etc., to save manufacturing costs, smooth chip removal, and stable cutting Effect

Inactive Publication Date: 2017-06-27
SINOSTEEL HENGYANG MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally, a special 120° ball-end multi-tooth linear edge oil groove milling cutter is used for processing. Due to the small chip groove, the chip removal is not smooth and the cutting is unstable, such as figure 2 As shown, in order to facilitate a smoother "drilling" into the machine body, the cutting edge of the cone tip should be set in a structure similar to that of the cutting edge on the cylindrical end face of the keyway milling cutter, and because the cutting speed of the tool rotation center is zero, the cone tip part Fast wear, low work efficiency, inconvenient sharpening and high cost

Method used

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  • Twist-drill oil-groove milling cutter

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Embodiment Construction

[0019] The twist drill oil groove milling cutter 1 is optimized on the basis of ordinary twist drills, and only the cutting part 2 participates in cutting. The cutting part 2 of the twist drill oil groove milling cutter 1 is composed of apex angle 2φ3, main Cutting edge 4, rake face 5, flank face 6, right helix angle β7, etc. (see image 3 ), and the apex angle 2φ3 is 118°, at this time, the main cutting edge 4 is a straight line. Such as image 3 and 4 And shown in 5, the present invention is that the twist drill oil groove milling cutter 1 apex angle 2φ3 sharpening of diameter greater than oil groove width B is sharpened to be 120 °, and the conical top sharpening is spherical arc R; The two main cutting edges 4 are From the intersection curve of two right-handed chip-holding and chip-removing spiral grooves and the cutting conical generatrix whose included angle between the generatrix and the axis is 60°, the two main cutting edges 4 are a positive and a reverse space spi...

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Abstract

The invention relates to a twist-drill oil-groove milling cutter. The twist-drill oil-groove milling cutter is optimized based on a normal twist-drill and can make full use of the cutting performance of the twist-drill. The vertex angle 2 Phi of the twist-drill oil-groove milling cutter is 120 degrees, and two main cutting edges are forward and backward spatial spiral C-Shaped curves with chip dividing grooves. By adoption of the two main cutting edges and the milling cutter provided with two big right-handed-rotation chip-hold and chip-removal spiral grooves, compared with a multi-tooth straight blade ball oil-groove milling cutter, chip deformation is less, chip- breaking, chip-removal and cooling are convenient. The twist-drill oil-groove milling cutter has the advantages of big chip holding spaces and smooth chip removing, progressive cut-in, stable cutting, high machining quality, long lifetime of cutting tools, and the like. The twist-drill oil-groove milling cutter is low in manufacturing cost, convenient to cutter sharpening, high in machining efficiency, and beneficial to promotion and application in production, and is a good cutter tool with excellent drilling and milling functions.

Description

technical field [0001] The invention relates to an oil groove milling cutter, which is mainly used for machining lubricating grooves with relative moving surfaces. Background technique [0002] There are many lubricating grooves processed in machining. Lubricating grooves are generally used to store lubricating grease, such as figure 1 The cross-section shown is a schematic diagram of a 120° lubricating groove whose geometry is characterized by a wide and shallow groove. Generally, a special 120° ball-end multi-tooth linear edge oil groove milling cutter is used for processing. Due to the small chip groove, the chip removal is not smooth and the cutting is unstable, such as figure 2 As shown, in order to facilitate a smoother "drilling" into the machine body, the cutting edge of the cone tip should be set in a structure similar to that of the cutting edge on the cylindrical end face of the keyway milling cutter, and because the cutting speed of the tool rotation center is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23C5/10B23B51/08
CPCB23C5/1081B23B51/08B23C2220/36
Inventor 周湘衡
Owner SINOSTEEL HENGYANG MACHINERY
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