CN213614388U

CN213614388U - Unequal integral milling cutter

Info

Publication number: CN213614388U
Application number: CN202022846053.9U
Authority: CN
Inventors: 殷保学; 周晨亮; 杨文印
Original assignee: Hangzhou Binuo Precision Tool Co ltd
Current assignee: Hangzhou Binuo Precision Tool Co ltd
Priority date: 2020-12-02
Filing date: 2020-12-02
Publication date: 2021-07-06
Anticipated expiration: 2030-12-02

Abstract

The utility model discloses an unequal integral milling cutter, which comprises a cutter body, wherein the cutter body consists of a cutter edge section, a chamfering cutter edge section and a cutter handle; the cutter edge section is provided with four first spiral cutter edges with different spiral angles, a first spiral chip groove is formed between every two adjacent first spiral cutter edges, and the top end of the cutter edge section is provided with an end tooth cutter edge; the chamfering cutter edge section is provided with a second spiral cutting edge, a second spiral chip removal groove is formed between every two adjacent spiral cutting edges, and the acute included angle between the four long edges of the section of the second spiral cutting edge and the central axis of the cutter body is 45 degrees. When the chamfering device is used, when each edge of a workpiece needs to be chamfered, the edge of the upper part of the workpiece is chamfered through the second spiral cutting edge of the lower half part of the chamfering cutting edge section, and the edge of the lower part of the workpiece is chamfered through the second spiral cutting edge of the upper half part of the chamfering cutting edge section, so that the milling and chamfering efficiency is greatly improved, and the processing precision is also improved; meanwhile, the four first spiral cutting edges are arranged at different spiral angles, so that the shock resistance of the cutter body is effectively improved.

Description

Unequal integral milling cutter

Technical Field

The utility model relates to a milling cutter technical field, concrete field is an unequal whole milling cutter.

Background

The milling cutter is a rotary cutter with one or more cutter teeth, wherein the cutter teeth cut off the allowance of a workpiece in sequence and intermittently during operation for milling; the milling cutter is mainly used for processing planes, steps, grooves, formed surfaces, cut-off workpieces and the like on a milling machine.

In the process of groove or outer surface forming processing of a workpiece, chamfering and flanging burr removal are often needed after milling processing, chamfering is needed after milling processing of the groove at present, and two tools are needed, which are time-consuming and labor-consuming; when the outer surface is formed and machined, the upper edge and the lower edge of the workpiece need to be chamfered by turning over or replacing a chamfering tool, so that time and labor are wasted, and the precision is reduced; and the cutting edges of the traditional milling cutter are evenly distributed, resonance can be generated during processing, and the processing quality of the surface of the part is reduced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an unequal whole milling cutter to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: an unequal integral milling cutter comprises a cutter body, wherein the cutter body consists of a front-section cutting edge section, a middle-section chamfering cutting edge section and a rear-end cutter handle; four first helical cutting edges with unequal helical angles are arranged on the cutting edge section, a first helical chip groove is formed between every two adjacent first helical cutting edges, and end tooth cutting edges with unequal angles are respectively arranged at the top end of the cutting edge section corresponding to the first helical cutting edges; the chamfering tool edge section is provided with second spiral cutting edges extending from four first spiral cutting edges, a second spiral chip groove corresponding to the first spiral chip groove is formed between every two adjacent second spiral cutting edges, the distance from the upper end and the lower end of each second spiral cutting edge to the central axis of the cutter body is larger than the distance from the upper end and the lower end of each first spiral cutting edge to the central axis of the cutter body, and the acute included angle between each second spiral cutting edge and the central axis of the cutter body is 45 degrees and is a straight line along the four long edges of the cross section of the central axis of the cutter body.

Preferably, the top end of the blade section is provided with a central point at the center of the end tooth blade, and at least one end tooth blade passes through the central point.

Preferably, the helix angle of the first helical flute and the second helical flute is 40-50 °.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model provides an unequal whole milling cutter, during the use, mills the work piece through first helical cutting edge, when needs advance the chamfer to each border of work piece, carries out the chamfer to work piece upper portion border through the lower half second helical cutting edge of chamfer sword section, and the first half second helical cutting edge through chamfer sword section is chamfered work piece lower part border, has improved greatly and has milled and chamfer efficiency, has also improved the machining precision.

2. The utility model provides an unequal whole milling cutter, because the unequal spiral angle setting of four first helical cutting edges has effectively improved the shock resistance of cutter body.

Drawings

Fig. 1 is a schematic view of the structure of the present invention;

fig. 2 is a schematic structural view of an end tooth cutting edge and a central point of the present invention;

in the figure: 1. a blade section; 2. a chamfering tool edge section; 3. a knife handle; 4. a first helical cutting edge; 5. a first helical flute; 6. an end tooth blade; 7. a second helical cutting edge; 8. a second spiral flute; 9. a center point.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1: referring to fig. 1-2, the present invention provides a technical solution: an unequal integral milling cutter comprises a cutter body, wherein the cutter body consists of a front-section cutter edge section 1, a middle-section chamfering cutter edge section 2 and a rear-end cutter handle 3; four first helical cutting edges 4 with unequal helical angles are arranged on the cutting edge section 1, a first helical chip groove 5 is arranged between every two adjacent first helical cutting edges 4, and end tooth cutting edges 6 with unequal angles are respectively arranged at the top end of the cutting edge section 1 corresponding to the first helical cutting edges 4; the chamfering cutter edge section 2 is provided with second spiral cutting edges 7 extending from four first spiral cutting edges 4, a second spiral chip groove 8 corresponding to the first spiral chip groove 5 is formed between every two adjacent second spiral cutting edges 7, the distance from the upper end and the lower end of each second spiral cutting edge 7 to the central axis of the cutter body is larger than the distance from the upper end and the lower end of each first spiral cutting edge 4 to the central axis of the cutter body, and the four long edges of the cross section of each second spiral cutting edge 7 along the central axis of the cutter body are straight lines and the acute included angle between each second spiral cutting edge 7 and the central axis of the cutter body is 45 degrees. Milling a workpiece by the rotating first spiral cutting edge 4, discharging chips by the first spiral chip groove 5, chamfering the upper edge of the workpiece by the second spiral cutting edge 7 at the lower half part of the chamfer cutting edge section 2, chamfering the lower edge of the workpiece by the second spiral cutting edge 7 at the upper half part of the chamfer cutting edge section 2, and discharging chips by the second spiral chip groove 8; meanwhile, the four first spiral cutting edges 4 are arranged at different spiral angles, so that the shock resistance of the cutter body is improved.

Specifically, the top end of the blade section 1 is provided with a central point 9 at the center of the end tooth blade 6, and at least one end tooth blade 6 passes through the central point 9; the axial feed of finish machining is convenient to satisfy, and slope milling and spiral interpolation milling performance are enhanced.

Specifically, the helical angle of the first spiral flute 5 and the second spiral flute 8 is 40-50 degrees; the chip removal is convenient, and the milling efficiency is improved.

For the convenience of understanding the technical solution of the present invention, the following detailed description is made on the working principle or the operation mode of the present invention in the practical process.

The working principle is as follows: when the chamfering tool is used, a workpiece is milled by rotating the first spiral cutting edge 4, chips are removed through the first spiral chip groove 5, when each edge of the workpiece needs to be chamfered and flanging burrs are removed, the edge of the upper part of the workpiece is chamfered through the second spiral cutting edge 7 on the lower half part of the chamfering cutting edge section 2, after the chamfering is finished, the edge of the lower part of the workpiece is chamfered through the second spiral cutting edge 7 on the upper half part of the chamfering cutting edge section 2, chips are removed through the second spiral chip groove 8 in the process, the milling and chamfering efficiency is greatly improved, and the machining precision is also improved; meanwhile, the four first helical cutting edges 4 are arranged at different helical angles, so that the shock resistance of the cutter body is effectively improved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An unequal integral milling cutter is characterized by comprising a cutter body, wherein the cutter body consists of a front-section cutter edge section (1), a middle-section chamfering cutter edge section (2) and a rear-end cutter handle (3); four first spiral cutting edges (4) with unequal spiral angles are arranged on the cutting edge section (1), a first spiral chip groove (5) is arranged between every two adjacent first spiral cutting edges (4), and end tooth cutting edges (6) with unequal angles are respectively arranged at the positions, corresponding to the first spiral cutting edges (4), of the top end of the cutting edge section (1); be equipped with on chamfer sword section (2) from four second helical cutting edge (7) that first helical cutting edge (4) extend, every adjacent two be equipped with between second helical cutting edge (7) and correspond second spiral chip groove (8) of first spiral chip groove (5), both ends arrive about second helical cutting edge (7) the distance of cutter body axis is greater than both ends arrive about first helical cutting edge (4) the distance of cutter body axis, second helical cutting edge (7) are followed four long edges in the cross-section of cutter body axis be the straight line and with the acute contained angle of cutter body axis is 45.

2. An unequal solid milling cutter according to claim 1, characterized in that the top end of the cutting edge section (1) in the centre of the end tooth cutting edge (6) is provided with a centre point (9), at least one of the end tooth cutting edges (6) passing said centre point (9).

3. An unequal solid milling cutter according to claim 1, characterized in that the helix angle of the first helical flutes (5) and the second helical flutes (8) is 40 ° to 50 °.