CN211360686U - Single-sided circular cutting insert and cutting tool therefor - Google Patents
Single-sided circular cutting insert and cutting tool therefor Download PDFInfo
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- CN211360686U CN211360686U CN201921758366.XU CN201921758366U CN211360686U CN 211360686 U CN211360686 U CN 211360686U CN 201921758366 U CN201921758366 U CN 201921758366U CN 211360686 U CN211360686 U CN 211360686U
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- circular cutting
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Abstract
The utility model discloses a single-sided circular cutting blade and a cutting tool thereof, wherein the cutting blade comprises a blade body with a circular outline; the insert body having an upper surface, a lower surface and a side surface connected between the upper and lower surfaces; a through hole matched with the locking screw is formed in the thickness direction of the blade body, and the side surface is obliquely arranged and gradually and inwards inclined from top to bottom; the lower surface is a plane; the upper surface is arranged obliquely and is gradually inclined downwards from outside to inside; the upper surface and the side surface are intersected to form a cutting edge; at least one inward-concave stopping groove which is used for being matched with the cutter body is arranged at the bottom end of the side surface of the blade body, the lower section of the concave surface of the stopping groove is a plane, and the upper section of the concave surface of the stopping groove is a curved surface. The utility model discloses an aspect can prevent that the cutting blade from rotating because of the cutting force is too big, and on the other hand can prevent the upset phenomenon that the cutting blade appears at the cutting in-process.
Description
Technical Field
The utility model relates to a metal cutting tool technical field especially relates to a circular cutting blade of single face and cutting tool for metal cutting process.
Background
Disposable blades are now widely used in metal machining. After a period of machining, the disposable insert may be removed from the cutting tool, rotated and replaced after the cutting edge has failed, and a new cutting edge may be used for machining. Cutting tools, such as milling cutters, that use disposable inserts have at least one insert seat in which the insert is secured.
During the cutting process, the insert is subjected to a number of forces which are related to various cutting parameters and which, in some cases, generate a torque which rotates the insert. Once the blade rotates, the clamping screw for fixing the blade is driven to loosen, and the blade vibrates, so that the service life of the blade and the processing quality of the surface of a workpiece are influenced, and even the blade is damaged and flies out, and the safety of a processing process is influenced.
For polygonal cutting inserts, the above-mentioned rotation does not occur. This is because polygonal cutting inserts have planar side walls, and when the insert is secured to the seat, at least one side wall of the insert will engage the seat, thereby preventing rotation of the insert. In contrast, although the circular blade is also fixed to the base, the engagement between the curved sidewall of the circular blade and the base does not prevent the blade from rotating.
In addition, the cutting force applied to the blade also causes the blade to turn over to some extent. For the double-sided blade, due to the matching of the side wall and the base, the clamping screw and the base are stressed together to prevent the double-sided blade from overturning. The side wall of the single-sided blade inclined at a certain angle cannot achieve the effect, and the clamping screw is stressed completely by the clamping screw, so that the clamping screw is not favorable under the condition of large cutting force.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art not enough, provide a circular cutting blade of single face and cutting tool thereof, through institutional advancement, on the one hand, can prevent that the cutting blade from rotating because of the cutting force is too big, on the other hand can prevent the upset phenomenon that the cutting blade appears in the cutting process.
The utility model provides a technical scheme that its technical problem adopted is: a single-sided circular cutting insert comprising an insert body having a peripheral profile generally in the shape of a circle; the insert body having an upper surface, a lower surface and a side surface connected between the upper and lower surfaces; a through hole matched with the locking screw is formed in the thickness direction of the blade body, and the axis of the through hole is coincided with the rotation axis of the blade body; the side surface is obliquely arranged and gradually and inwards inclined from top to bottom; the lower surface is a plane; the upper surface is arranged obliquely and gradually inclines downwards from outside to inside; the upper surface and the side surface intersect to form a cutting edge; the bottom end of the side surface of the blade body is provided with at least one inwards-concave stopping groove which is used for being matched with the blade body, the lower section of the concave surface of the stopping groove is a plane, and the upper section of the concave surface of the stopping groove is a curved surface.
The upper section of the concave surface of the stop groove is a curved surface which is close to a quarter cylindrical shape.
The stop groove is one.
The plurality of stop grooves are uniformly distributed on the periphery of the blade body.
The cutting edge is in the shape of a flat edge.
The cutting edge is in the shape of a serrated edge.
A cutting tool comprising the above-mentioned single-sided circular cutting insert and a tool body, said tool body comprising at least one insert mounting seat, said insert mounting seat being provided with a stop protrusion protruding outwardly for cooperation with a stop recess of said single-sided circular cutting insert, the protruding shape of said stop protrusion being non-complementary to the recessed shape of said stop recess, a slight gap being present between the stop recess of said single-sided circular cutting insert and the stop protrusion of the insert mounting seat of said tool body when said single-sided circular cutting insert is mounted in the insert mounting seat of said tool body.
The lower section of the convex surface of the stopping bulge is a plane, and the upper section of the convex surface of the stopping bulge is a curved surface which is close to a quarter of a cylinder shape;
the blade mounting seat comprises a bottom wall and a side wall, and the lower surface of the single-sided circular cutting blade is matched with the bottom wall of the blade mounting seat of the cutter body in a matching manner; the bottom wall of the blade mounting seat is provided with a threaded hole and corresponds to a through hole of the single-sided circular cutting blade arranged in the blade mounting seat, so that the single-sided circular cutting blade is fixed on the blade mounting seat by locking a screw on the single-sided circular cutting blade; the stop bulge is arranged at the bottom of the side wall, and the upper part of the side wall of the blade mounting seat is provided with an arc-shaped inclined surface which can be matched with the side surface of the single-sided circular cutting blade in a matched mode.
The cutter body includes a plurality of blade mount pads, and a plurality of blade mount pads evenly distributed are at the periphery of the tip of cutter body.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses owing to adopted the bottom department at the side surface of blade body to be equipped with at least one inside sunken and be used for with cutter body matched with locking recess, the hypomere of the sunken face of locking recess is the plane, and the upper segment of the sunken face of locking recess is the curved surface to and be equipped with at least one blade mount pad on the cutter body, the blade mount pad be equipped with one outside protrusion in order to be used for with the locking recess matched with locking of single face circular cutting blade is protruding, the bellied convex shape of locking with the concave shape of locking recess is not complementary mutually, works as single face circular cutting blade installs during the blade mount pad of cutter body, single face circular cutting blade's locking recess with there is small clearance between the locking arch of the blade mount pad of cutter body. The utility model discloses a cooperation between this kind of structure, the locking arch of the locking recess that utilizes the circular cutting blade of single face and the blade mount pad of cutter body can prevent on the one hand that the cutting blade is too big rotatory because of the cutting force effect, and on the other hand can prevent the upset phenomenon that the cutting blade appears in the cutting process.
The present invention will be described in further detail with reference to the accompanying drawings and examples; the single-sided circular cutting insert and the cutting tool thereof of the present invention are not limited to the embodiments.
Drawings
Fig. 1 is a perspective view of a cutting insert according to an embodiment of the present invention;
fig. 2 is a bottom view of a cutting insert according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;
fig. 4 is a schematic perspective view of a cutter body of a cutting tool according to an embodiment of the present invention;
fig. 5 is a schematic structural view of an insert mounting seat of a cutter body of a cutting tool according to an embodiment of the present invention;
fig. 6 is a schematic view illustrating an assembly process of a cutting insert and a cutter body of a cutting tool according to an embodiment of the present invention;
fig. 7 is a cross-sectional view of the cutting insert and body of the cutting tool according to the embodiment of the present invention.
Detailed Description
Examples
For ease of understanding, a cutting tool according to the present invention will be presented below in the form of a milling cutter. It should be noted that the cutting tool of the present invention may be other cutting tools, such as turning tools.
Referring to fig. 1 to 3, a single-sided circular cutting insert of the present invention includes an insert body 10 having a peripheral contour in a substantially circular shape; the insert body 10 has an upper surface 13, a lower surface 16 and a side surface 17 connected between the upper and lower surfaces; a through hole 11 matched with the locking screw is arranged in the thickness direction of the blade body 10, and the axis of the through hole 11 is coincided with the rotation axis of the blade body 10; the side surface 17 is inclined and gradually inclined inwards from top to bottom; the lower surface 16 is a plane; the upper surface 13 is arranged obliquely and is gradually inclined downwards from outside to inside; the intersection of the upper surface 13 and the side surface 17 constitutes a cutting edge 14; at least one stopping groove 20 which is concave inwards and is used for being matched with the cutter body is arranged at the bottom end of the side surface 17 of the cutter blade body 10, the lower section of the concave surface of the stopping groove 20 is a plane 21, and the upper section of the concave surface of the stopping groove 20 is a curved surface 22.
The through hole 11 of the insert body 10 is a non-cylindrical central hole which passes through the insert body 10 and whose axis of rotation coincides with the axis of rotation of the insert body 10. The through hole 11 is provided with a screw positioning surface 12, and the screw positioning surface 12 is used for being matched with a clamping screw to realize the clamping of the blade body 10 on the cutter body. The upper surface 13 of the insert body 10 extends generally outwardly and terminates in a cutting edge 14, extends inwardly and terminates in an upper edge 15 of the central bore 11; the lower surface 16 of the insert body 10 extends generally outwardly and terminates at a lower edge 18 of the side surface 17, extends inwardly and terminates at a lower edge 19 of the central bore 11; the side surface 17 of the insert body 10 is generally annular and extends between the upper surface 13 and the lower surface 16.
In this embodiment, the upper section of the concave surface of the stopper groove 20 is a curved surface 22 having a shape close to a quarter cylinder.
In this embodiment, the number of the stop grooves 20 is six, and the six stop grooves 20 are uniformly distributed on the periphery of the blade body 10.
The six stopping recesses 20 of the insert body 10 are uniformly arranged around the side surface 17 of the insert body 10 in connection with the lower surface 16 of the insert body 10, and the flat surfaces 21 of the stopping recesses 20 are in connection with the lower surface 16.
In the present embodiment, the cutting edge 14 has a flat edge shape.
Referring to fig. 1 to 7, a cutting tool according to the present invention includes the above-mentioned single-sided circular cutting insert 10 and a cutter body, i.e., a milling cutter body 23, the milling cutter body 23 includes at least one insert mounting seat 24, the insert mounting seat 24 is provided with a stop protrusion 29 protruding outward for cooperating with the stop recess 20 of the single-sided circular cutting insert 10, the protruding shape of the stop protrusion 29 is not complementary to the recessed shape of the stop recess 20, and when the single-sided circular cutting insert 10 is mounted on the insert mounting seat 24 of the milling cutter body 23, a slight gap D exists between the stop recess 20 of the single-sided circular cutting insert 10 and the stop protrusion 29 of the insert mounting seat 24 of the milling cutter body 23.
In this embodiment, the lower section of the protruding surface of the stopping protrusion 29 is a plane 30, and the upper section of the protruding surface of the stopping protrusion 29 is a curved surface 31 that is approximately a quarter-cylinder shape;
in this embodiment, the insert mounting seat 24 includes a bottom wall 25 and a side wall 27, the lower surface 16 of the single-sided circular cutting insert 10 fits snugly against the bottom wall 25 of the insert mounting seat 24 of the milling cutter body 23, and the bottom wall 25 of the insert mounting seat 24 fits against the insert lower surface 16 to position the cutting insert 10; a bottom wall 25 of the insert mounting seat 24 is provided with a threaded hole 26 corresponding to the through hole 11 of the single-sided circular cutting insert 10 fitted into the insert mounting seat 24, and as shown in fig. 7, a center line of the through hole 11 is slightly offset with respect to a center line of the threaded hole 26 to fix the single-sided circular cutting insert 10 to the insert mounting seat 24 by locking a screw 32 to the single-sided circular cutting insert 10; the stop protrusion 29 is disposed at the bottom of the side wall 27, the upper portion of the side wall 27 of the insert mounting seat 24 is provided with an arc-shaped inclined surface 28 capable of matching with the side surface 17 of the single-sided circular cutting insert 10, and the arc-shaped inclined surface 28 corresponds to an insert supporting surface matching with the side surface 17 of the cutting insert 10 and absorbs the lateral vibration of the cutting insert 10 during the machining process.
The flat surface 30 of the convex surface of the stopper projection 29 is connected to the bottom wall 25 of the insert mounting seat 24, and the flat surface 30 of the convex surface of the stopper projection 29 prevents the cutting insert 10 from being turned over by engagement with the flat surface 21 of the stopper groove 20 of the cutting insert 10; the curved surface 31 of the convex surface of the stopper projection 29 extends between the side wall 27 of the insert mounting seat 24 and the flat surface 30 of the convex surface of the stopper projection 29, and the engagement of the curved surface 31 of the convex surface of the stopper projection 29 with the curved surface 22 of the stopper groove 20 of the cutting insert 10 prevents rotation of the cutting insert 10. It should be noted that the use of a single stop protrusion 29 on the insert mounting block 24, rather than a plurality of stop protrusions, reduces the cost of manufacturing the cutter body 23, while providing versatility in that such an insert mounting block 24 can be adapted for use with cutting inserts 10 having different numbers of stop recesses 20.
As shown in fig. 6, the cutting insert 10 is mounted to an insert mounting seat 24 of the cutter body 23. A clamping screw 32 is passed through the central hole 11 of the cutting insert 10 and fastened to the threaded hole 26 of the insert mounting seat 24. At this time, the tapered surface 33 of the clamping screw 32 is tightly fitted with the screw seating surface 12 of the cutting insert 10, the lower surface 16 of the cutting insert 10, and the bottom wall 25 of the insert mounting seat 24, thereby clamping the cutting insert 10.
The engagement of the stop recess 20 with the stop protrusion 29 after clamping of the cutting insert 10 is shown in fig. 7. It is noted that there is a certain clearance D between the curved surface 22 of the stop recess 20 of the cutting insert 10 and the curved surface 31 of the stop projection 29 of the insert mounting seat 24, the presence of the clearance D allowing a small degree of rotation and tilting of the cutting insert. Without the clearance D, the machining of the curved surfaces 22 and 31 requires extremely high machining accuracy, otherwise the cutting insert 10 cannot be normally mounted on the insert mounting seat 24, which greatly increases the manufacturing costs of the cutter body 23 and the cutting insert 10. When the cutting insert 10 is subjected to a cutting force to effect a small degree of rotation, the curved surface 22 makes a point contact with the curved surface 31, which prevents further rotation of the cutting insert 10; when the cutting insert 10 is turned at a small angle, the flat surface 21 of the stopping recess 20 of the cutting insert 10 makes line contact with the flat surface 30 of the stopping protrusion 29 of the insert mounting seat 24, thereby transmitting part of the cutting force to the cutter body 23 while preventing the cutting insert 10 from being further turned.
The cutting insert 10 of the present embodiment is secured to the insert mounting seat 24 by a clamping screw 32, and there are also embodiments in which the cutting insert 10 is secured by a clamp plate or other clamp; also, as the cutting insert 10 is mounted to the cutter body 23, embodiments exist in which the cutting insert 10 is mounted to a lathe tool holder.
In this embodiment, the milling cutter body 23 includes four insert mounting seats 24, and the four insert mounting seats 24 are uniformly distributed on the periphery of the end portion of the milling cutter body 23.
The utility model relates to a single-sided circular cutting blade and a cutting tool thereof, which adopts that at least one stopping groove 20 which is inwards sunken and is used for being matched with a tool body 23 is arranged at the bottom end of a side surface 17 of a blade body 10, the lower section of the concave surface of the stopping groove 20 is a plane 21, the upper section of the concave surface of the stopping groove 20 is a curved surface 22, and at least one insert mounting seat 24 provided on the cutter body 23, the insert mounting seat 24 being provided with a stopping protrusion 29 protruded outwardly for being engaged with the stopping recess 20 of the single-sided circular cutting insert 10, the convex shape of the stop projection 29 is not complementary to the concave shape of the stop groove 20, when the single-sided circular cutting insert 10 is mounted in the insert mounting seat 24 of the cutter body 23, a slight gap D exists between the stopping recess 20 of the single-sided circular cutting insert 10 and the stopping protrusion 29 of the insert mounting seat 24 of the cutter body 23. The utility model discloses a cooperation between the locking protrusion 29 of the locking recess 20 of the circular cutting blade 10 of single face and the blade mount pad 24 of cutter body 23 is utilized to this kind of structure, on the one hand, can prevent that the cutting blade from rotating because of the cutting force is too big, and on the other hand can prevent the upset phenomenon that the cutting blade appears in cutting process.
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 (10)
1. A single-sided circular cutting insert comprising an insert body having a peripheral profile generally in the shape of a circle; the insert body having an upper surface, a lower surface and a side surface connected between the upper and lower surfaces; a through hole matched with the locking screw is formed in the thickness direction of the blade body, and the axis of the through hole is coincided with the rotation axis of the blade body; the method is characterized in that: the side surface is obliquely arranged and gradually and inwards inclined from top to bottom; the lower surface is a plane; the upper surface is arranged obliquely and gradually inclines downwards from outside to inside; the upper surface and the side surface intersect to form a cutting edge; the bottom end of the side surface of the blade body is provided with at least one inwards-concave stopping groove which is used for being matched with the blade body, the lower section of the concave surface of the stopping groove is a plane, and the upper section of the concave surface of the stopping groove is a curved surface.
2. The single-sided circular cutting insert of claim 1, wherein: the upper section of the concave surface of the stop groove is a curved surface which is close to a quarter cylindrical shape.
3. The single-sided circular cutting insert of claim 1 or 2, wherein: the stop groove is one.
4. The single-sided circular cutting insert of claim 1 or 2, wherein: the plurality of stop grooves are uniformly distributed on the periphery of the blade body.
5. The single-sided circular cutting insert of claim 1 or 2, wherein: the cutting edge is in the shape of a flat edge.
6. The single-sided circular cutting insert of claim 1 or 2, wherein: the cutting edge is in the shape of a serrated edge.
7. A cutting tool, characterized by: the single-sided circular cutting insert comprises the single-sided circular cutting insert as claimed in any one of claims 1 to 6 and a cutter body, wherein the cutter body comprises at least one insert mounting seat, the insert mounting seat is provided with a stop protrusion protruding outwards for matching with the stop groove of the single-sided circular cutting insert, the protruding shape of the stop protrusion is not complementary with the recessed shape of the stop groove, and when the single-sided circular cutting insert is mounted on the insert mounting seat of the cutter body, a slight gap is formed between the stop groove of the single-sided circular cutting insert and the stop protrusion of the insert mounting seat of the cutter body.
8. The cutting tool of claim 7, wherein: the lower section of the protruding surface of the stopping protrusion is a plane, and the upper section of the protruding surface of the stopping protrusion is a curved surface which is close to a quarter of a cylindrical shape.
9. The cutting tool according to claim 7 or 8, wherein: the blade mounting seat comprises a bottom wall and a side wall, and the lower surface of the single-sided circular cutting blade is matched with the bottom wall of the blade mounting seat of the cutter body in a matching manner; the bottom wall of the blade mounting seat is provided with a threaded hole and corresponds to a through hole of the single-sided circular cutting blade arranged in the blade mounting seat, so that the single-sided circular cutting blade is fixed on the blade mounting seat by locking a screw on the single-sided circular cutting blade; the stop bulge is arranged at the bottom of the side wall, and the upper part of the side wall of the blade mounting seat is provided with an arc-shaped inclined surface which can be matched with the side surface of the single-sided circular cutting blade in a matched mode.
10. The cutting tool of claim 9, wherein: the cutter body includes a plurality of blade mount pads, and a plurality of blade mount pads evenly distributed are at the periphery of the tip of cutter body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921758366.XU CN211360686U (en) | 2019-10-18 | 2019-10-18 | Single-sided circular cutting insert and cutting tool therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921758366.XU CN211360686U (en) | 2019-10-18 | 2019-10-18 | Single-sided circular cutting insert and cutting tool therefor |
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| Publication Number | Publication Date |
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| CN211360686U true CN211360686U (en) | 2020-08-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921758366.XU Active CN211360686U (en) | 2019-10-18 | 2019-10-18 | Single-sided circular cutting insert and cutting tool therefor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110695384A (en) * | 2019-10-18 | 2020-01-17 | 厦门金鹭特种合金有限公司 | Single-sided circular cutting blade and cutting tool thereof |
-
2019
- 2019-10-18 CN CN201921758366.XU patent/CN211360686U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110695384A (en) * | 2019-10-18 | 2020-01-17 | 厦门金鹭特种合金有限公司 | Single-sided circular cutting blade and cutting tool thereof |
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