CN217044766U - High-efficient twolip milling cutter - Google Patents

Abstract

The utility model discloses a high-efficient twolip milling cutter, including tool bit and cutter arbor, establish two chip grooves, two main cutting edges and two pairs of cutting edges on the tool bit, two pairs of cutting edges are crossing to form the knife tip, and the knife tip both sides all are equipped with the grooving, establish the chip guide face between grooving and chip groove, and the grooving intersects with the chip groove and forms the third sword, and the chip guide face intersects with the chip groove and forms the fourth sword, and two fourth swords intersect in knife tip department. The utility model has the advantages that the third cutting edge and the fourth cutting edge can be separated from the auxiliary cutting edge by arranging the cutting grooves on the two cutting back surfaces of the double-edge milling cutter, thereby slowing down the abrasion and the collapse of the end part of the cutter head and prolonging the service life of the cutter; by arranging the chip guide surface, chips cut by the third cutting edge and the fourth cutting edge can be smoothly guided into the chip removal groove, so that the abrasion of a tool bit and the over-high temperature rise caused by the accumulation of the chips are avoided, and the tool bit and a workpiece are protected; simultaneously, the improvement of tool bit tip structure makes twolip milling cutter can continuously cut under the drive of higher rotational speed, promotes cutting efficiency.

Description

High-efficient twolip milling cutter

Technical Field

The utility model relates to a milling cutter technical field, in particular to high-efficient twolip milling cutter.

Background

Milling cutters are common cutting tools, which, in operation, rotate and the end and side cutting edges cut a workpiece, and which, depending on the configuration of the cutting head, can be used to mill various grooves or end faces. However, regardless of the structure of the cutter head, the arrangement of the cutting edges and the chip grooves is always an important performance parameter of the milling cutter, and is directly related to the cutting efficiency, the cutting precision and the service life of the milling cutter.

In a conventional double-edge milling cutter, a chip removal groove is deep and wide, chip removal is fast, heat dissipation of the cutter is good, and heat damage to the cutter and a workpiece is small, but the structure of the cutter head can cause that a secondary cutting edge is long, and the cutter point is easy to break in a high-speed cutting process, so that the cutting rotating speed of the double-edge milling cutter cannot be set too high, and the cutting efficiency is relatively low.

SUMMERY OF THE UTILITY MODEL

To the problem that exists among the above-mentioned prior art, the utility model provides a high-efficient twolip milling cutter can slow down tool bit tip wearing and tearing and collapse, prolongs the life of cutter, avoids the sweeps to pile up the tool bit wearing and tearing and the temperature rise that lead to too fast for twolip milling cutter can continuously cut under higher rotational speed drive, promotes cutting efficiency.

In order to solve the technical problem, the utility model discloses a technical scheme as follows:

a high-efficiency double-edged milling cutter comprises a cutter head and a cutter bar, wherein two chip grooves with spiral structures are symmetrically arranged on the side wall of the cutter head, the edge of each chip groove forms a main cutting edge on the side wall of the cutter head respectively, an auxiliary cutting edge is formed at one end part of the cutter head, a cutting front face is formed between each main cutting edge and one chip groove, and a cutting back face is formed between each auxiliary cutting edge and the other chip groove; a cutting groove is formed in each cutting rear surface on each of two sides of the cutter tip, and a chip guide surface is arranged between each cutting groove and each chip removal groove; each cutting groove is intersected with one chip removal groove to form a third blade, each chip guide surface is intersected with the other chip removal groove to form a fourth blade, and the two fourth blades are intersected at the blade tip.

As a further elaboration of the above technical solution:

in the above technical solution, the two cutting grooves are symmetrically arranged on two sides of the blade tip.

In the above technical solution, a transition surface is provided on a side wall of the cutter head beside each main cutting edge, each transition surface extends along the side wall of the cutter head and intersects with one cutting back surface, the cutting groove and the chip guide surface, and a helical land is formed between each transition surface and one main cutting edge.

In the above technical solution, the cutter bar is provided with a positioning groove extending along the radial direction and a plurality of clamping grooves extending along the axis.

In the technical scheme, a round angle is arranged at the joint of the cutter head and the cutter rod.

Compared with the prior art, the beneficial effects of the utility model reside in that: by arranging the cutting grooves on the two cutting back surfaces of the double-edge milling cutter, a third cutting edge and a fourth cutting edge can be separated from a longer secondary cutting edge, the cutting force applied to a single cutting edge is dispersed, the abrasion and the breakage of the end part of the cutter head are reduced, and the service life of the cutter is prolonged; by arranging the chip guide surface, chips cut by the third cutting edge and the fourth cutting edge can be smoothly guided into the chip removal groove, so that the abrasion of a tool bit and the over-high temperature rise caused by the accumulation of the chips are avoided, and the tool bit and a workpiece are protected; simultaneously, the improvement of tool bit tip structure makes twolip milling cutter can continuously cut under the drive of higher rotational speed, promotes cutting efficiency.

Drawings

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

FIG. 2 is an enlarged schematic view of the structure of portion A of FIG. 1;

fig. 3 is a schematic top view of the tool bit of the present invention.

In the figure: 100. a cutter head; 200. a cutter bar; 10. a chip groove; 20. cutting the front surface; 30. cutting the back surface; 40. grooving; 50. Chip guide surfaces; 60. a transition surface; 70. a margin; 80. positioning a groove; 90. a card slot; 1. a main cutting edge; 2. a secondary cutting edge; 3. A nose; 4. a third blade; 5. a fourth blade; 6. round corners;

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The embodiments described by referring to the drawings are exemplary and intended to be used for explaining the present application and are not to be construed as limiting the present application. In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and thus should not be considered limiting. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise. In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and encompass, for example, both fixed and removable connections or integral connections; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate. In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

As shown in fig. 1-3, a high-efficiency double-edged milling cutter comprises a cutter head 100 and a cutter bar 200, wherein two flutes 10 with spiral structures are symmetrically arranged on the side wall of the cutter head 100, the edge of each flute 10 forms a main cutting edge 1 on the side wall of the cutter head 100, and forms a secondary cutting edge 2 at one end part of the cutter head 100, a cutting front surface 20 is formed between each main cutting edge 1 and one flute 10, a cutting back surface 30 is formed between each secondary cutting edge 2 and the other flute 10, and the two secondary cutting edges 2 intersect at the axial center of the end part of the cutter head 100 to form a cutter tip 3; a cutting groove 40 is formed in each cutting rear surface 30 on each of two sides of the cutter point 3, and a chip guide surface 50 is arranged between each cutting groove 40 and a chip groove 10; each flute 40 intersects one flute 10 and forms a third edge 4, each chip guide surface 50 intersects another flute 10 and forms a fourth edge 5, and the four fourth edges 5 intersect at the cutting tip 3.

Further, two cutting grooves 40 are symmetrically arranged on both sides of the tool nose 3.

Further, the side wall of the cutting insert 100 is provided with a transition surface 60 at the side of each major cutting edge 1, each transition surface 60 extends along the side wall of the cutting insert 100 and intersects a cutting relief surface 30, the cutting groove 40 and the chip guide surface 50, and a helical land 70 is formed between each transition surface 60 and one major cutting edge 1.

Further, the cutter bar 200 is provided with a positioning groove 80 extending along the radial direction and a plurality of clamping grooves 90 extending along the axial direction.

Further, the joint of the cutter head 100 and the cutter bar 200 is provided with a fillet 6.

During cutting, the driving device drives the cutter bar 200 to drive the cutter head 100 to rotate, the cutter point 3 firstly contacts with a workpiece, then the two fourth cutting edges 5, the third cutting edge 4 and the second cutting edge 2 sequentially cut into the workpiece to form a conical hole, and finally the first cutting edge 1 contacts with the workpiece to cut the side wall of the hole groove; the scraps cut by the two fourth cutting edges 5 and the third cutting edges 4 are respectively gathered into the two chip grooves 10 through the two cutting grooves 40 and the two chip guide surfaces 50, and the scraps cut by the two secondary cutting edges 2 and the main cutting edge 1 directly flow into the two chip grooves 10.

The utility model discloses through set up grooving 40 on two cutting backs 20 of twolip milling cutter, can decompose out third cutting edge 4 and fourth cutting edge 5 at longer vice cutting edge 2, disperse the cutting force that exerts on single cutting edge, slow down tool bit tip wearing and tearing and collapse, prolong the life of cutter; by arranging the chip guide surface 50, chips cut by the third cutting edge 4 and the fourth cutting edge 5 can be smoothly guided into the chip groove 10, so that tool bit abrasion and over-fast temperature rise caused by accumulation of the chips are avoided, and the tool bit and a workpiece are protected; simultaneously, the improvement of tool bit tip structure makes twolip milling cutter can continuously cut under the drive of higher rotational speed, promotes cutting efficiency.

The above is not intended to limit the technical scope of the present invention, and any modifications, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention are all within the scope of the technical solution of the present invention.

Claims (5)

1. A high-efficiency double-edge milling cutter comprises a cutter head and a cutter bar, wherein two chip grooves with spiral structures are symmetrically arranged on the side wall of the cutter head, the edge of each chip groove forms a main cutting edge on the side wall of the cutter head respectively, an auxiliary cutting edge is formed at one end part of the cutter head, a cutting front surface is formed between each main cutting edge and one chip groove, and a cutting rear surface is formed between each auxiliary cutting edge and the other chip groove; a cutting groove is formed in each cutting rear surface on each of two sides of the cutter tip, and a chip guide surface is arranged between each cutting groove and each chip removal groove; each cutting groove is intersected with one chip removal groove to form a third blade, each chip guide surface is intersected with the other chip removal groove to form a fourth blade, and the two fourth blades are intersected at the blade tip.

2. A high efficiency double-edged milling cutter as claimed in claim 1, wherein the two cutting flutes are symmetrically provided on both sides of the tip.

3. A high efficiency double-edged milling cutter as set forth in claim 1, wherein transition surfaces are provided on the side wall of the cutter head, on the side of each of the main cutting edges, each of the transition surfaces extending along the side wall of the cutter head and intersecting with one of the cutting relief surfaces, the cutting flutes and the chip guide surfaces, and a helical land is formed between each of the transition surfaces and one of the main cutting edges.

4. A high efficiency double-edged milling cutter as claimed in any one of claims 1 to 3, wherein the cutter holder is provided with radially extending positioning grooves and a plurality of axially extending catching grooves.

5. A high efficiency double-edged milling cutter as claimed in claim 4, wherein the junction of the cutter head and the shank is rounded.

Images