CN214517645U

CN214517645U - Nonstandard double-edge cutting-off and grooving blade for numerical control indexable

Info

Publication number: CN214517645U
Application number: CN202120110134.4U
Authority: CN
Inventors: 甘其龙; 沈钰; 殷亚军; 欧望达
Original assignee: Suzhou Ahno Precision Cutting Technology Co ltd
Current assignee: Suzhou Ahno Precision Cutting Technology Co ltd
Priority date: 2021-01-15
Filing date: 2021-01-15
Publication date: 2021-10-29
Anticipated expiration: 2031-01-15

Abstract

The utility model provides a nonstandard twolip cutting off grooving blade for numerical control is indexable, its chip breaking cell type through the improvement for chip breaking chip removal performance is good, and accurate locking laminated structure, makes the installation firm, antidetonation, and stand wear and tear, type position precision good. The position of one of them pair of diagonal angle of the cutting end of the axial outer end of blade body is provided with cutting unit portion respectively, and arbitrary cutting unit portion superposes in another motionless cutting unit portion when rotatory 180 under the cutting state of blade body, every cutting unit portion includes cutting edge, chip breaker, smear metal guide part, the cutting edge includes main cutting edge and circular arc cutting edge and constitutes, main cutting edge's both sides and the side that corresponds circular arc cutting edge's initiating terminal is connected, corresponding minor cutting edge is connected respectively to the outside end of circular arc cutting edge, and outside end face, the medial surface that two minor cutting edges correspond are arranged to the position indent of keeping away from the knife tip position.

Description

Nonstandard double-edge cutting-off and grooving blade for numerical control indexable

Technical Field

The utility model relates to a technical field of cutting tool structure specifically is a nonstandard twolip cutting off grooving blade for numerical control is indexable.

Background

The indexable cutter as an advanced cutter has the advantages of high hardness, high durability, quick replacement, long service life of the cutter, low use cost of the cutter and the like, and is widely applied to cutting machining. The existing numerical control indexable cutter has the following defects in the aspect of cutting off the cutting groove: 1. the cutter head of the grooving cutter is long and narrow, poor in rigidity and easy to vibrate; 2. the cutting deformation is large, when in cutting process, the grooving cutter simultaneously takes part in work by a main cutting edge, two auxiliary cutting edges and two tool nose circular arcs, and chips are rubbed and extruded by two sides when being discharged; 3. the cutting force is large, and under the same cutting amount, the cutting force is increased by 20-25% in grooving processing and general excircle turning; 4. the cutting heat is concentrated, and the cutting edge works in a semi-closed state during grooving. The periphery of the cutting tool is surrounded by a workpiece and chips, and the heat dissipation area of the grooving tool is small, so that deformation heat and friction heat are not easy to be transmitted, the cutting temperature is high, and the cutting tool is concentrated at a cutting edge, so that the tool abrasion is aggravated; 5. chip removal is difficult, when chips are discharged in a narrow cutting groove, the chips are subjected to the image of larger friction resistance at two sides of the cutting groove, and broken chips can be blocked in the cutting groove to cause vibration, so that the chips are difficult to remove and the cutter is damaged; 6. the market numerical control non-standard cutting slot blade is expensive and has long manufacturing period. Therefore, a numerical control indexable non-standard double-edge cutting and grooving blade which can remove chips and break chips, is firm in positioning and installation, good in rigidity and not prone to vibration is urgently needed.

Disclosure of Invention

In view of the above problem, the utility model provides a nonstandard twolip cutting off grooving blade for numerical control is indexable, its chip breaking cell type through the improvement for chip breaking chip removal performance is good, and accurate locking laminated structure, makes the installation firm, antidetonation, and stand wear and tear, type position precision good.

The utility model provides a be used for numerical control indexable nonstandard twolip to cut off grooving blade which characterized in that: the cutting blade comprises a blade body, wherein cutting unit parts are respectively arranged at a pair of opposite angles of a cutting end at the outer end of the blade body in the axial direction, any one cutting unit part is superposed on the other cutting unit part which is still when the cutting unit part rotates 180 degrees in the cutting state of the blade body, each cutting unit part comprises a cutting edge, a chip breaker groove and a chip guide part, the cutting edge comprises a main cutting edge and arc cutting edges, two sides of the main cutting edge are connected with the starting ends of the arc cutting edges on the corresponding sides, the outer side end of each arc cutting edge is respectively connected with the corresponding secondary cutting edge, the outer side end face and the inner side end face corresponding to the two secondary cutting edges are arranged in a concave manner from the position of the tool tip to the position far away from the tool tip, and the two outer side end faces and the inner side end faces which are opposite to each other of each cutting unit part are gradually close to each other from the initial position of the tool tip to the position far away from the tool tip; the chip breaker includes rake face, curl bits arc surface, smear metal guide face, the face territory that main cutting edge, arc cutting edge, secondary cutting edge combination formed forms the rake face, the radial inboard of rake face is provided with the curl bits arc surface of indent, the cutting guide face is connected to the output rear end of curl bits arc surface, be provided with two installation reference surfaces on the blade body for the surface of the bulge of cutting end, every installation reference surface is provided with the indent and is fixed angle's clamp plate pressing surface.

It is further characterized in that:

the intersecting central position of the outer side end faces corresponding to the two cutting unit parts is provided with a clearance groove, and the clearance groove prevents a grinding wheel from being deformed easily during closed grinding during grinding processing and cannot meet the requirement of flatness of the outer side end face where the secondary cutting edge is located;

the coating process hole penetrates through the axial center of the blade body, the coating process hole is arranged in the area of the clearance groove, and the coating process hole is positioned at the center of the blade body, so that batch coating is convenient to clamp at intervals, and the surface of the blade body is coated uniformly;

the inward concave fixed angle of the pressing plate pressing surface is 45 degrees at two sides and is not parallel to a linear channel arranged on the central rotating shaft, and the bottom of the linear channel is provided with a downward convex air-eliminating groove, so that the smooth discharge of air after the pressing plate surface is attached to the pressing plate pressing surface is ensured; the pressing surface of the pressing plate with the angle of 45 degrees is tightly attached to a specific pressing plate, the pressing force is converted into 3 directional forces under the condition of vertical stress, and the 3 directional forces respectively point to the stress directions of 3 mounting and positioning surfaces of the blade body, so that stable and reliable positioning is ensured;

and a vertical angle is formed between the end surface of the inner side and the positioning surface of the blade body, so that the processing is convenient and quick.

Adopt the utility model discloses afterwards, the cutting edge is accomplished after the cutting, the piece enters into the chip breaker along the rake face, then through the medial surface that contracts gradually, the outside clearance that the outside terminal surface formed is with the piece discharge, it can guarantee curling of smear metal well, the rupture and in the same direction as the sharp discharge, be provided with two installation reference surfaces on the blade body for the surface of the bulge of cutting end, because be provided with two installation reference surfaces on the surface of the bulge for the cutting end of blade body, every installation reference surface is provided with the clamp plate pressing surface that the indent is fixed angle, accurate locking laminated structure, make the installation firm, antidetonation, and stand wear and tear, type position precision is good.

Drawings

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

FIG. 2 is a front view and a partial enlarged structural diagram of the present invention;

FIG. 3 is a schematic sectional view A-A of FIG. 2;

FIG. 4 is a schematic top view of the structure of FIG. 2;

the names corresponding to the sequence numbers in the figure are as follows:

the cutting insert comprises an insert body 100, a cutting end 200, a cutting unit part 300, a convex part 400, an installation reference surface 500, a main cutting edge 1, an arc cutting edge 2, a secondary cutting edge 3, an outer end surface 4, an inner end surface 5, a rake surface 6, a chip coiling arc surface 7, a chip guiding surface 8, a pressure plate pressing surface 9, a clearance groove 10, a coating process hole 11, a lower convex air-relief groove 12,

positioning surfaces

13, 14 and 15, a positioning surface 16 and a cutter point 20.

Detailed Description

A non-standard double-edged cutting grooving insert for numerically controlled indexable turning, see fig. 1-4: the cutting insert comprises an insert body 100, wherein a pair of opposite corners of a cutting end 200 at the outer end of the insert body 100 in the axial direction are respectively provided with a cutting unit 300, any one cutting unit 300 is overlapped with another cutting unit 300 which is still when the cutting unit rotates 180 degrees in the cutting state of the insert body 100, each cutting unit 300 comprises a cutting edge, a chip breaking groove and a chip guiding part, the cutting edge comprises a main cutting edge 1 and an arc cutting edge 2, two sides of the main cutting edge 1 are connected with the starting ends of the arc cutting edges 2 at the corresponding sides, the outer sides of the arc cutting edges 2 are respectively connected with corresponding secondary cutting edges 3, the outer side end surfaces 4 and the inner side end surfaces 5 corresponding to the two secondary cutting edges 3 are arranged in a concave manner from the position of the insert tip 20 to the position far away from the insert tip 20, the two outer side end surfaces 4 and the inner side end surfaces 5 which are opposite to each other are arranged from the starting position of the insert tip 20 to the position far away from the insert tip 20 and gradually approach each other, the chip breaker groove comprises a front cutter face 6, a chip coiling arc surface 7 and a chip guiding face 8, a main cutting edge 1, an arc cutting edge 2 and a secondary cutting edge 3 are combined to form the front cutter face 6, the radially inner side of the front cutter face 6 is provided with the concave chip coiling arc surface 7, the output rear end of the chip coiling arc surface 7 is connected with the cutting guiding face 8, two installation reference surfaces 500 are arranged on the outer surface of a convex part 400, relative to a cutting end 300, of the blade body 100, and each installation reference surface 500 is provided with a pressing plate pressing face 9, wherein the concave part is a fixed angle.

The intersecting center position of the outer side end faces 4 corresponding to the two cutting unit parts 300 is provided with a clearance groove 10, and the clearance groove 10 avoids that a grinding wheel is easy to deform during closed grinding during grinding processing and cannot meet the requirement of flatness of the outer side end face where the secondary cutting edge 3 is located;

the coating process hole 11 penetrates through the axial center of the blade body 100, the coating process holes 11 are arranged in the area of the clearance groove 10, and the coating process hole 11 is located in the center of the blade body 100, so that batch coating is convenient to clamp at intervals, and the surface of the blade body is uniformly coated;

the inward concave fixed angle of the pressing plate pressing surface 9 is 45 degrees at two sides and is not parallel to a linear channel arranged on the central rotating shaft, and the bottom of the linear channel is provided with a downward convex air-eliminating groove 12, so that the smooth discharge of air after the pressing plate surface is attached to the pressing plate pressing surface 9 is ensured; the pressing plate pressing surface 9 with the angle of 45 degrees is tightly attached to a specific pressing plate, the pressing force is converted into 3 directional forces under the condition of vertical stress, the 3 directional forces respectively point to the stress directions of 3 mounting and positioning

surfaces

13, 14 and 15 of the blade body, and the positioning is ensured to be stable and reliable;

the inner side end face 5 and the positioning surface 16 of the blade body 100 are arranged at a vertical angle, so that the machining is convenient and quick.

The beneficial effects are as follows:

1. the coating process hole is positioned at the center of the blade body, so that batch coating is convenient to clamp at intervals, the surface of the blade is coated uniformly, and the coating quality is improved, so that the service life is prolonged;

2. the blade is provided with a clearance groove which is positioned at the joint of the end faces of the two outer sides, so that the situation that a grinding wheel is easy to deform during closed grinding during grinding processing and cannot meet the requirement on the flatness of the secondary cutting edge is avoided;

3. the cutting unit part consists of a cutting edge, a chip breaker groove and a chip guide part, wherein the chip breaker groove comprises a front cutter face, a chip curling arc face and a chip guide face, so that the curling, breaking and smooth discharge of chips can be well guaranteed, the cutting heat and the winding of iron chips are reduced, and the abrasion of a blade is reduced;

the 4.45-degree pressing inclined plane is tightly attached to the specific pressing plate, pressing force is converted into 3 directional forces under the condition of vertical stress, the 3 directional forces respectively point to 3 mounting and positioning surfaces of the cutter bar, and the cutter bar is firm to mount, good in rigidity and free of cutter vibration.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a be used for numerical control indexable nonstandard twolip to cut off grooving blade which characterized in that: the cutting blade comprises a blade body, wherein cutting unit parts are respectively arranged at a pair of opposite angles of a cutting end at the outer end of the blade body in the axial direction, any one cutting unit part is superposed on the other cutting unit part which is still when the cutting unit part rotates 180 degrees in the cutting state of the blade body, each cutting unit part comprises a cutting edge, a chip breaker groove and a chip guide part, the cutting edge comprises a main cutting edge and arc cutting edges, two sides of the main cutting edge are connected with the starting ends of the arc cutting edges on the corresponding sides, the outer side end of each arc cutting edge is respectively connected with the corresponding secondary cutting edge, the outer side end face and the inner side end face corresponding to the two secondary cutting edges are arranged in a concave manner from the position of the tool tip to the position far away from the tool tip, and the two outer side end faces and the inner side end faces which are opposite to each other of each cutting unit part are gradually close to each other from the initial position of the tool tip to the position far away from the tool tip; the chip breaker includes rake face, curl bits arc surface, smear metal guide face, the face territory that main cutting edge, arc cutting edge, secondary cutting edge combination formed forms the rake face, the radial inboard of rake face is provided with the curl bits arc surface of indent, the cutting guide face is connected to the output rear end of curl bits arc surface, be provided with two installation reference surfaces on the blade body for the surface of the bulge of cutting end, every installation reference surface is provided with the indent and is fixed angle's clamp plate pressing surface.

2. A non-standard double-edged nicking blade for numerically controlled indexable cutting inserts as recited in claim 1 wherein: and a clearance groove is arranged at the intersection center position of the outer end faces corresponding to the two cutting unit parts.

3. A non-standard double-edged nicking blade for numerically controlled indexable cutting inserts as recited in claim 2 wherein: the coating process hole penetrates through the axial center of the blade body, the coating process hole is arranged in the area of the clearance groove, and the coating process hole is located in the center of the blade body.

4. A non-standard double-edged nicking blade for numerically controlled indexable cutting inserts as recited in claim 1 wherein: the fixed angle of indent of clamp plate pressing surface is both sides 45 degrees and the sharp passageway that central pivot was arranged is not parallel to, the bottom of sharp passageway is the lower convex groove of breathing out.

5. A non-standard double-edged nicking blade for numerically controlled indexable cutting inserts as recited in claim 1 wherein: the inner side end face and the positioning surface of the blade body form a vertical angle.