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Comb-shaped milling cutter blade

A milling blade and comb-shaped technology, which is applied in the field of indexable comb-shaped milling blades, can solve the problems of low workpiece machining accuracy, poor machining efficiency, and low tool life, and reduce single-point cutting force and cutting temperature. Effect of reducing tool wear and improving machining accuracy

Inactive Publication Date: 2019-04-12
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional flat rake face and straight edge inserts have high cutting force, severe tool wear, low tool life, poor machining efficiency and low workpiece machining accuracy

Method used

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  • Comb-shaped milling cutter blade
  • Comb-shaped milling cutter blade
  • Comb-shaped milling cutter blade

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] In this embodiment, a comparative experiment on the milling wear of comb-shaped milling inserts and straight-edge milling inserts was carried out. The experiment was divided into two groups, and the workpiece material was ordinary 45 steel. The first group of experiments used single-tooth milling. After a period of continuous cutting, the wear of the tool was measured with a video instrument. When the tool reached the blunt standard, the cutting experiment was stopped, and the main cutting edge and smoothing of the two blades were observed on the video instrument. Wear on the flank of the blade. The experimental results show that the wear of the two inserts mainly occurs on the flank of the wiper edge, and the flank wear of the main cutting edge is less; the wear of the flank of the wiper edge of the comb milling cutter is greater than that of the straight edge milling insert The amount of wear is due to the fact that during single-tooth cutting, the cutting edge lengt...

Embodiment 2

[0040] In this embodiment, a comparison experiment of cutting force between a comb-shaped milling insert and a conventional linear-edged insert was carried out. Orthogonal test was used in the experiment, and the effects of axial depth of cut, cutting speed, feed per tooth and longitudinal depth of cut on cutting force were studied with a small number of experiments. The workpiece material used in the experiment is 45 steel, and the model of the force measuring instrument is KISTLER 9257B. Experimental data shows that under the same milling parameters, the milling force of the indexable comb-shaped milling insert is smaller than that of the straight-edge milling insert, which can reduce the milling force by 1000000000000% to 20%. The reasons are as follows: First, the main cutting edge of the comb milling cutter adopts a unique chip-splitting structure, which turns the long chips of the straight edge into thick and short fine scale chips during the milling process, so that the...

Embodiment 3

[0042] In this embodiment, a comparative experiment of the milling vibration characteristics of a comb-shaped milling insert and a conventional linear-edged insert is carried out. The experiment adopts orthogonal test, and a total of 9 groups are carried out. The milling vibration experiment test system consists of two parts, the first part is the CNC machining center-tool-workpiece-fixture system, and the second part is the vibration signal acquisition system. refer to image 3 , image 3Schematic diagram of the testing system for the milling vibration experiment. The experimental results show that the comb-shaped insert has better processing stability than the straight-edged insert when milling 45 steel. The reason is that the comb-shaped edge produces fine chips, and the length of contact between the cutting edge and the workpiece is short, which is easy to cut into the workpiece and reduces the cutting force. , thus improving the processing stability. And it can be con...

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Abstract

The invention provides a comb-shaped milling cutter blade, which comprises a blade body (10) fixed to a milling cutter seat (8). Positioning faces (9) are arranged on the side faces of the milling cutter seat (8); the blade body (10) is provided with a screw hole (7), and an arc edge (3) is arranged on one side face of the blade body (10); a curve edge (5) is arranged on the side face adjacent tothe side face where the arc edge (3) is located; and a sleeking blade (2) is arranged at the arc edge (3), and a comb-shaped cutting blade (4) is arranged at the curve edge (5). During cutting machining of the comb-shaped milling cutter blade, only small parts of cutting blades of all blade main bodies participate, and parts of cutting blades, with gaps, not participating in cutting play a role ofchip dividing; the contacting length between the cutting blades and workpieces is increased through multi-point cutting, axial component force generated by the two sides of the blade tops is mutuallybalanced, and machining resistance and milling heat during milling machining can be effectively reduced; and the comb-shaped milling cutter blade is not prone to being vibrated, the chip dividing effect is excellent, chip discharging is smooth, and an ideal solving scheme is provided for machining of narrow grooves or deep cavities of high-temperature alloys.

Description

technical field [0001] The invention belongs to the field of mechanical processing tools, and in particular relates to a comb-shaped milling insert, in particular to an indexable comb-shaped milling insert for mechanical processing whose cutting edge adopts a power function curve. Background technique [0002] A milling cutter is a rotating tool with one or more teeth used for milling. When working, each tooth successively cuts off the allowance of the workpiece. Milling cutters are mainly used for machining planes, steps, grooves, forming surfaces and cutting off workpieces on milling machines. [0003] The tool is the direct executor of the machine tool to realize the cutting process. In the production process, the tool directly affects the machining efficiency and product quality. At present, an important means of developing high-precision, high-efficiency, high-quality and long-life cutting tools is to improve the structure and geometry of the cutting tools. The tradit...

Claims

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Application Information

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IPC IPC(8): B23C5/02
Inventor 刘钢雷学林高阳华薛进前何云
Owner EAST CHINA UNIV OF SCI & TECH
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