CN212384691U

CN212384691U - Milling blade

Info

Publication number: CN212384691U
Application number: CN202020559636.0U
Authority: CN
Inventors: 谢子欣; 纪志阳; 林凤添; 陈圳伟; 袁文浩
Original assignee: Xiamen Golden Egret Special Alloy Co Ltd
Current assignee: Xiamen Golden Egret Special Alloy Co Ltd
Priority date: 2020-04-15
Filing date: 2020-04-15
Publication date: 2021-01-22
Anticipated expiration: 2030-04-15

Abstract

The utility model discloses a milling blade, which comprises a blade body with an outline which is approximately in a regular polygon shape; the blade body having an upper face, a bottom face and a side face connected between edges of the upper face and the bottom face; through holes penetrating up and down are formed in the middle of the upper surface and the bottom surface of the blade body; the upper surface of the blade body is slightly wider than the bottom surface of the blade body, and each corner of the upper surface of the blade body deflects by a preset angle relative to the corresponding corner of the bottom surface of the blade body along the clockwise direction; the intersection of the upper surface of the insert body and the side surface of the insert body forms a cutting edge. The utility model discloses can improve machining efficiency, can reduce blade disc use cost again, improve the economic nature.

Description

Milling blade

Technical Field

The utility model relates to a cutter technical field especially relates to a milling cutter piece suitable for have the higher processing operating mode who requires to machining efficiency.

Background

The milling blade is a tool for processing the surface of an object in a milling mode, and the milling processing belongs to a high-efficiency processing method. Milling is generally a method of cutting a workpiece by rotation of a milling cutter and movement of the workpiece on a milling machine, and is one of the methods commonly used for metal cutting. Milling can be carried out on planes, step surfaces, grooves (key grooves, T-shaped grooves, dovetail grooves and the like), tooth dividing parts (gears, chain wheels, ratchets, spline shafts and the like), spiral surfaces (threads, spiral grooves), various curved surfaces and the like. The milling blade and the milling cutter body in the prior art are combined singly, the main deflection angle of the cutter body is limited to be a fixed value, and due to the fact that an existing cutter head (namely the milling cutter body) is expensive, if the requirements of common face milling machining and efficient machining are met, a plurality of cutter bodies need to be replaced, namely if the main deflection angle needs to be changed, a new cutter body needs to be designed and manufactured again, the cost of design and manufacturing is increased, the manufacturing cost of the cutter body is high, and the economy is poor.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art not enough, provide a milling cutter piece, through institutional advancement, can improve machining efficiency, can reduce blade disc use cost again, improve economic nature.

The utility model provides a technical scheme that its technical problem adopted is: a milling insert comprising an insert body having an outer contour substantially in the shape of a regular polygon; the blade body having an upper face, a bottom face and a side face connected between edges of the upper face and the bottom face; through holes penetrating up and down are formed in the middle of the upper surface and the bottom surface of the blade body; the upper surface of the blade body is slightly wider than the bottom surface of the blade body, and each corner of the upper surface of the blade body deflects by a preset angle relative to the corresponding corner of the bottom surface of the blade body along the clockwise direction; the intersection of the upper surface of the insert body and the side surface of the insert body forms a cutting edge.

The outer profile of the blade body is substantially in the shape of a regular hexagon.

The corner of the upper face of the insert body is deflected by an angle of 10-30 ° in the clockwise direction with respect to the corresponding corner of the bottom face of the insert body.

The corner of the upper face of the insert body is angled 15 ° in a clockwise direction relative to the corresponding corner of the bottom face of the insert body.

The cutting edge includes a circular arc cutting edge at a corner tip position, and a main cutting edge extending upward and a secondary cutting edge extending downward along the circular arc cutting edge.

The projection of the main cutting edge on the horizontal plane is a straight line.

The projection of the main cutting edge on the horizontal plane is a great arc line, and the radius of the great arc line is 150-300 mm.

The bottom surface of blade body is the plane, the higher authority of blade body by be in the peripheral last plane of through-hole and by go up the planar edge to the last inclined plane of cutting edge extension, and go up the inclined plane and be the increase gradually, go up the inclined plane and constitute the rake face of milling blade.

The side surface of the blade body comprises an arc cutting edge, an arc transition part, a main cutting edge rear cutter surface and an auxiliary cutting edge rear cutter surface, wherein the arc transition part is formed by inclining the main cutting edge and the auxiliary cutting edge towards the lower inner side; the transition curved surface is arranged between two adjacent side planes, the side planes and the transition curved surface are respectively vertical to the bottom surface, and the transition curved surface corresponds to the corner position of the bottom surface.

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

the utility model designs the upper surface of the blade body to be slightly wider than the bottom surface of the blade body, and each corner part on the upper surface of the blade body deflects a preset angle relative to the corresponding corner part on the bottom surface of the blade body along the clockwise direction; the intersection of the upper surface of the insert body and the side surface of the insert body forms a cutting edge. The utility model discloses a this kind of structure through rotatory cutting edge angle, has guaranteed simultaneously again that locating surface (side plane and bottom plane) are unchangeable, and the angle that installs current blade on the blade disc changes to less angle to make main declination diminish, with this machining efficiency who improves the cutter.

The present invention will be described in further detail with reference to the accompanying drawings and examples; the milling insert of the present invention is not limited to the embodiments.

Drawings

Fig. 1 is a schematic perspective view of an embodiment of the present invention;

fig. 2 is a top view of an embodiment of the present invention;

fig. 3 is a front view of an embodiment of the present invention;

fig. 4 is a schematic view of an embodiment of the present invention mounted on a knife body;

fig. 5 is a sectional view of the embodiment of the present invention assembled to a cutter body.

In the figure, 10, the cutter body; 20. a blade body; 21. an upper plane; 22. a bottom surface; 23. a through hole; 24. a side surface; 25. a side plane; 26. a transition curved surface; 29. a rake face; 30. a cutting edge; 31. a main cutting edge; 32. a secondary cutting edge; 33. a circular arc cutting edge; 40. arc transition; 41. a main cutting edge relief; 42. a minor cutting edge relief surface.

Detailed Description

Examples

Referring to fig. 1 to 5, a milling insert according to the present invention includes an insert body 20 having an outer contour substantially in the shape of a regular polygon; the insert body 20 has an upper face, a bottom face 22 and a side face 24 connected between edges of the upper and bottom faces; a through hole 23 penetrating up and down (namely penetrating the thickness of the blade body 20) is formed in the middle of the upper surface and the bottom surface of the blade body, and the central axis C of the through hole 23 is vertically arranged; the upper surface of the insert body 20 is slightly wider than the bottom surface 22 of the insert body, and each corner of the upper surface of the insert body 20 is deflected by a preset angle in a clockwise direction with respect to the corresponding corner of the bottom surface 22 of the insert body; the intersection of the upper face of the insert body 20 and the side 24 of the insert body constitutes a cutting edge 30.

In this embodiment, the outer contour of the insert body 20 is substantially in the shape of a regular hexagon.

The corner of the upper face of the insert body 20 is angled 10-30 deg. in the clockwise direction relative to the corresponding corner of the bottom face of the insert body.

In this embodiment, the upper corner of the insert body 20 is angled 15 ° in a clockwise direction relative to the corresponding corner of the bottom surface of the insert body.

In the present embodiment, the cutting edge 30 includes a circular arc cutting edge 33 at a corner tip position, and a main cutting edge 31 extending upward and a sub cutting edge 32 extending downward along the circular arc cutting edge 33.

In this embodiment, the projection of the main cutting edge 31 on the horizontal plane is a straight line.

Of course, the projection of the main cutting edge on the horizontal plane can also be a large arc line, and the radius of the large arc line is 150-300 mm.

In this embodiment, the bottom surface 22 of the insert body 20 is a flat surface, the upper surface of the insert body 20 includes an upper flat surface 21 located around the through hole and an upper inclined surface extending from the edge of the upper flat surface to the cutting edge, the upper inclined surface is gradually increased, and the upper inclined surface constitutes a rake surface 29 of the milling insert.

In this embodiment, the side surface 24 of the insert body 20 includes an arc transition 40, a main cutting edge flank 41 and a sub cutting edge flank 42, which are inclined downward and inward from the arc cutting edge, the main cutting edge and the sub cutting edge, and a side plane 25 and a transition curved surface 26, which extend from the arc transition, the main cutting edge flank and the sub cutting edge flank to the bottom surface; the transition curved surface 26 is located between two adjacent side planes 25, the side planes 25 and the transition curved surface 26 are perpendicular to the bottom surface 22, and the transition curved surface 26 corresponds to the corner of the bottom surface 22.

The utility model discloses a milling blade, adopted and designed into the upper surface of blade body 20 slightly wider than the bottom surface 22 of the blade body, and each bight on the upper surface of the blade body deflects a preset angle along the clockwise direction relative to the corresponding bight of the bottom surface of the blade body; the intersection of the upper face of the insert body 20 and the side of the insert body constitutes a cutting edge 30. The utility model discloses a this kind of structure, through rotatory rake face angle, guaranteed simultaneously again that locating surface (side plane and bottom plane) are unchangeable, the angle that installs current blade on the blade disc changes to less angle to make main declination diminish, with this machining efficiency who improves the cutter.

The utility model discloses a milling blade wholly is regular hexagon shape that is equilateral hexagon's shape, and its the higher authority is according to certain angle clockwise rotation for bottom surface 22, and the accuracy of its location is guaranteed to the unchangeable hexagon of bottom surface 22, and the higher authority of rotatory intersects with the back knife face and obtains main cutting edge 31 and the vice cutting edge 32 that has certain angle.

As shown in fig. 4, in the present embodiment, the milling insert 20 is mounted on the milling cutter body 10 by screws, and due to the deflection angle, the milling insert 20 is mounted such that the milling insert 20 is rotated by an angle Kr relative to the plane of the workpiece to be machined. In order to realize high feeding, the rotation angle is set to be not too large according to the principle of thin chips, generally set to be 10 to 30 degrees, and the optimal selection of the embodiment is 15 degrees.

As shown in fig. 5, by the design of the milling insert 20 of the present example, two different milling inserts mounted on the milling cutter body 10 can realize different principal angles, which not only can satisfy the cutting depth requirement of a large principal angle, but also can realize high-feed and high-efficiency machining due to a small principal angle.

The foregoing is illustrative of the preferred embodiment of the present invention and is not to be construed as limiting the invention in any way. Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention. The technical solutions disclosed above can be used by those skilled in the art to make many possible variations and modifications, or to modify equivalent embodiments, without departing from the scope of the present invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments by the technical entity of the present invention should fall within the protection scope of the technical solution of the present invention.

Claims

1. A milling insert comprising an insert body having an outer contour substantially in the shape of a regular polygon; the blade body having an upper face, a bottom face and a side face connected between edges of the upper face and the bottom face; through holes penetrating up and down are formed in the middle of the upper surface and the bottom surface of the blade body; the method is characterized in that: the upper surface of the blade body is slightly wider than the bottom surface of the blade body, and each corner of the upper surface of the blade body deflects by a preset angle relative to the corresponding corner of the bottom surface of the blade body along the clockwise direction; the intersection of the upper surface of the insert body and the side surface of the insert body forms a cutting edge.

2. The milling insert according to claim 1, characterized in that: the outer profile of the blade body is substantially in the shape of a regular hexagon.

3. The milling insert according to claim 1 or 2, characterized in that: the corner of the upper face of the insert body is deflected by an angle of 10-30 ° in the clockwise direction with respect to the corresponding corner of the bottom face of the insert body.

4. The milling insert according to claim 3, characterized in that: the corner of the upper face of the insert body is angled 15 ° in a clockwise direction relative to the corresponding corner of the bottom face of the insert body.

5. The milling insert according to claim 1 or 2, characterized in that: the cutting edge includes a circular arc cutting edge at a corner tip position, and a main cutting edge extending upward and a secondary cutting edge extending downward along the circular arc cutting edge.

6. The milling insert according to claim 5, characterized in that: the projection of the main cutting edge on the horizontal plane is a straight line.

7. The milling insert according to claim 5, characterized in that: the projection of the main cutting edge on the horizontal plane is a great arc line, and the radius of the great arc line is 150-300 mm.

8. The milling insert according to claim 5, characterized in that: the bottom surface of blade body is the plane, the higher authority of blade body by be in the peripheral last plane of through-hole and by go up the planar edge to the last inclined plane of cutting edge extension, and go up the inclined plane and be the increase gradually, go up the inclined plane and constitute the rake face of milling blade.

9. The milling insert according to claim 5, characterized in that: the side surface of the blade body comprises an arc cutting edge, an arc transition part, a main cutting edge rear cutter surface and an auxiliary cutting edge rear cutter surface, wherein the arc transition part is formed by inclining the main cutting edge and the auxiliary cutting edge towards the lower inner side; the transition curved surface is arranged between two adjacent side planes, the side planes and the transition curved surface are respectively vertical to the bottom surface, and the transition curved surface corresponds to the corner position of the bottom surface.