CN211218726U

CN211218726U - Cutting insert of silicon nitride-based sintered body

Info

Publication number: CN211218726U
Application number: CN201922103592.0U
Authority: CN
Inventors: 杨军
Original assignee: Tianjin Wake New Energy Technology Co ltd
Current assignee: Tianjin Wake New Energy Technology Co ltd
Priority date: 2019-11-29
Filing date: 2019-11-29
Publication date: 2020-08-11
Anticipated expiration: 2029-11-29

Abstract

The utility model discloses a cutting insert of a silicon nitride-based sintered body, belonging to the technical field of cutting tools of silicon nitride-based sintered bodies, comprising a cutter bar, wherein the front end of the cutter bar is provided with a bearing platform, a clamping groove is arranged at the cutter bar at the rear end of the bearing table, a cutter block is embedded in the clamping groove, a screw hole A is arranged at the center of the cutter block, a fixing bolt is connected with the screw hole A through an internal thread, which is provided with a clamping groove, a cutter block, a screw hole A, a fixing bolt, a screw hole B, a bearing platform lug and an invagination groove, a bearing platform is arranged at the front end of the cutter bar, a clamping groove is arranged at the cutter bar position at the rear end of the bearing platform, the cutter block is embedded into the clamping groove, the convex block at the bottom end of the cutter block is embedded and fixed with the invagination groove on the surface of the bearing table, the screw hole A of the cutter block is vertical to the notch of the screw hole B of the bearing table at the moment, and the fixing bolt is screwed into the screw hole A and the screw hole B for fixing, so that the problem that the fixing structure of the cutter block and the cutter bar of the existing silicon nitride-based sintered body cutting insert is poor is solved.

Description

Cutting insert of silicon nitride-based sintered body

Technical Field

The utility model relates to a silicon nitride based sintered body cutting tool technical field especially relates to a cutting insert of silicon nitride based sintered body.

Background

Silicon nitride is an important structural ceramic material. It is a superhard matter, has lubricity and abrasion resistance, and is an atomic crystal; is resistant to oxidation at high temperature. It can resist cold and hot impact, and can be heated to above 1000 deg.C in air, and can be rapidly cooled and then rapidly heated, and can not be broken. Because of the excellent properties of silicon nitride ceramics, it is often used to manufacture mechanical components such as bearings, turbine blades, mechanical seal rings, and permanent molds. If the silicon nitride ceramics which is high temperature resistant and difficult to transfer heat is used for manufacturing the heating surface of the engine part, the quality of the diesel engine can be improved, the fuel can be saved, and the heat efficiency can be improved. The diesel engine has been developed in China, America, Japan and other countries.

1. The silicon nitride-based sintered body in the prior art can be used for manufacturing a cutting insert, the connection between the existing cutting insert and a cutter bar of a frame is locked and fixed by a bolt, and the fixing mode is used for easily loosening the cutter block after long-term processing of the cutter block when the cutter block is fixed, so that the turning processing of a lathe is influenced.

2. The cutting insert of the silicon nitride-based sintered body in the prior art is fixed on the surface of a cutter bar, the cutter bar of the existing cutting insert is clamped and fixed by a tool rest, the fixing mode is simple, and after the cutter bar is stressed for a long time, threads of a fixing bolt are easy to loosen to cause the rectangular cutter bar to retreat backwards, so that the cutting insert of the silicon nitride-based sintered body is provided.

SUMMERY OF THE UTILITY MODEL

The utility model provides a cutting insert of silicon nitride based sintered body, which is characterized in that a clamping groove, a cutter block, a screw hole A, a fixed bolt, a screw hole B, a bearing platform lug and an invagination groove are arranged, a bearing platform is arranged at the front end of a cutter bar, a clamping groove is arranged at the rear end of the bearing platform, the cutter block is embedded into the clamping groove, the lug at the bottom end of the cutter block is embedded and fixed with the invagination groove on the surface of the bearing platform, the screw hole A of the cutter block is vertical to the notch of the screw hole B of the bearing platform at the moment, the fixed bolt is screwed in the screw hole A and the screw hole B for fixing, the problem that the cutter block and the cutter bar fixed structure of the existing silicon nitride based sintered body cutting insert are poor is solved, the clamping platform is arranged at the rear end of the cutter bar, the clamping platform is arranged behind the clamping platform of the cutter bar pressing, the cutter bar is locked by a bolt, the clamping platform and the cutter bar have height difference, the cutter bar higher than the cutter bar clamping platform is clamped on the front end, the cutter bar is prevented from retreating, and the problem that the fixed cutter bar of the existing silicon nitride-based sintered body cutting insert is loosened and retreated when the processing time is too long is solved.

The utility model provides a specific technical scheme as follows:

the utility model provides a pair of cutting insert of silicon nitride based sintered body, including the cutter arbor, the bearing platform has been seted up to the front end of cutter arbor, and the cutter arbor department of bearing platform rear end has seted up the draw-in groove, the embedding has the sword piece in the draw-in groove, and the center of sword piece has seted up screw A, screw A female connection has the gim peg, and the bearing platform department of screw A lower extreme has seted up screw B, the invagination groove has been seted up on the surface of bearing platform, and the top embedding in invagination groove has the lug, lug integrated into one piece is in the bottom of sword piece.

Optionally, the cutter bar surface at the rear end of the clamping groove is provided with a clamping platform.

Optionally, the surface of the cutter bar is plated with a zinc coating.

Optionally, the notch of the screw hole a is turned into a non-threaded inner wall.

Optionally, one corner of the front end of the cutter block is polished to be an arc-shaped outer corner.

The utility model has the advantages as follows:

1. the utility model discloses a be equipped with the draw-in groove, the sword piece, screw A, the gim peg, screw B, bearing platform lug and the invagination groove, bearing platform is seted up out at the front end of cutter arbor, then the cutter arbor department of bearing platform rear end sets up out the draw-in groove, imbed the sword piece in to the draw-in groove, make the lug of sword piece bottom fixed with the invagination groove gomphosis on bearing platform surface, the screw A of sword piece is perpendicular with the screw B's of bearing platform notch this moment, use gim peg screw in screw A and screw B to fix, the poor problem of sword piece and the cutter arbor fixed knot structure of current silicon nitride based sintered body cutting inserted sword has been solved.

2. The utility model discloses a be equipped with and press from both sides the dress platform, set up out at the cutter arbor rear end and press from both sides the dress platform, the dress platform of clamp of gang tool rest pressfitting cutter arbor uses bolt locking gang tool frame behind the dress platform, and press from both sides the dress platform and have the difference in height with the cutter arbor, is higher than the cutter arbor card that presss from both sides the dress platform when the cutter arbor atress moves back and on gang tool rest front end surface, avoids the cutter arbor to retreat, has solved the problem that the fixed cutter arbor process time of current silicon nitride based sintered body cutting inlays the not hard up back of.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic view of a fixing structure of a cutting insert of a silicon nitride-based sintered body according to an embodiment of the present invention.

Fig. 2 is a cross-sectional view of a holder of a cutting insert of a silicon nitride-based sintered body according to an embodiment of the present invention.

In the figure: 1. a cutter bar; 2. a card slot; 3. a cutter block; 4. a screw hole A; 5. a fixing bolt; 6. a screw hole B; 7. a receiving table; 8. a clamping table; 9. a bump; 10. an invagination groove; 11. and (4) a zinc coating.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, 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 efforts belong to the protection scope of the present invention.

A cutting insert of a silicon nitride-based sintered body according to an embodiment of the present invention will be described in detail with reference to fig. 1 to 2.

Referring to fig. 1 and 2, the embodiment of the utility model provides a cutting insert of silicon nitride based sintered body, including cutter arbor 1, bearing platform 7 has been seted up to the front end of cutter arbor 1, and bearing platform 7 rear end cutter arbor 1 department has seted up draw-in groove 2, the embedded sword piece 3 that has of draw-in groove 2, and the center of sword piece 3 has seted up screw A4, screw A4 female connection has gim peg 5, and screw A4 lower extreme bearing platform 7 department has seted up screw B6, bearing platform 7's surface has seted up undercut groove 10, and the top embedding of undercut groove 10 has lug 9, lug 9 integrated into one piece is in sword piece 3's bottom.

Illustratively, a receiving platform 7 is arranged at the front end of the cutter bar 1, then a clamping groove 2 is arranged at the rear end of the receiving platform 7 at the cutter bar 1, the cutter block 3 is embedded into the clamping groove 2, so that a bump 9 at the bottom end of the cutter block 3 is embedded and fixed with an inner sunken groove 10 on the surface of the receiving platform 7, at the moment, a screw hole A4 of the cutter block 3 is perpendicular to a notch of a screw hole B6 of the receiving platform 7, and the fixing bolt 5 is used for being screwed into the screw hole A4 and the screw hole B6 for fixing.

Referring to fig. 1, a clamping table 8 is disposed on the surface of the tool bar 1 at the rear end of the clamping groove 2.

In the example, a clamping table 8 is arranged at the rear end of the cutter bar 1, the cutter bar 1 is locked by using bolts after the cutter bar 1 is pressed on the clamping table 8, the clamping table 8 and the cutter bar 1 have a height difference, and the cutter bar 1 higher than the clamping table 8 is clamped on the surface of the front end of the cutter bar 1 when the cutter bar 1 is stressed to retreat, so that the cutter bar 1 is prevented from retreating.

Referring to fig. 2, the surface of the tool bar 1 is plated with a zinc plating layer 11.

In an example, the surface of the cutter bar 1 is electroplated with a zinc coating 11 to isolate and protect the cutter bar 1 made of metal materials, so that the cutter bar 1 is prevented from being oxidized and rusted by contacting with the external environment.

Referring to fig. 2, the notch of the screw hole a4 is turned to have an unthreaded inner wall.

Illustratively, the threadless notch of the screw hole A4 facilitates rotation of the securing bolt 5 after insertion into the screw hole A4, preventing the securing bolt 5 from being rotated obliquely into the screw hole A4.

Referring to fig. 1, one corner of the front end of the cutter block 3 is ground into an arc-shaped outer corner.

For example, the arc-shaped outer corner of one end of the cutter block 3 can be contacted with a round product for grinding.

When in use, the front end of the cutter bar 1 is provided with the receiving platform 7, then the cutter bar 1 at the rear end of the receiving platform 7 is provided with the clamping groove 2, the cutter block 3 is embedded into the clamping groove 2, so that the bump 9 at the bottom end of the knife block 3 is embedded and fixed with the sunken groove 10 on the surface of the bearing table 7, at the moment, the screw hole A4 of the knife block 3 is vertical to the notch of the screw hole B6 of the bearing table 7, the fixing bolt 5 is screwed into the screw hole A4 and the screw hole B6 for fixing, a clamping table 8 is arranged at the rear end of the cutter bar 1, the gang tool holder is locked by using a bolt after the gang tool holder is pressed on the clamping table 8 of the cutter bar 1, the clamping table 8 and the cutter bar 1 have a height difference, be higher than the cutter arbor 1 card that presss from both sides dress platform 8 on the rake front end surface when cutter arbor 1 atress retreat, avoid cutter arbor 1 retreat, 1 surface electroplating of cutter arbor has galvanizing coat 11 to carry out isolated protection to the cutter arbor 1 of metal material, avoids cutter arbor 1 to contact external environment oxidation corrosion.

It should be noted that the utility model relates to a cutting insert of silicon nitride based sintered body, including cutter arbor 1, draw-in groove 2, sword piece 3, screw A4, gim peg 5, screw B6, accept platform 7, press from both sides dress platform 8, lug 9, undercut groove 10, galvanizing coat 11, the part is general standard component or the part that technical staff in the field knows, and its structure and principle all are that this technical staff all can learn through the technical manual or learn through conventional experimental method.

It is apparent that those skilled in the art can make various changes and modifications to the embodiments of the present invention without departing from the spirit and scope of the embodiments of the present invention. Thus, if such modifications and variations of the embodiments of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A cutting insert of a silicon nitride based sintered body comprising a holder (1), characterized in that: bearing platform (7) have been seted up to the front end of cutter arbor (1), and cutter arbor (1) department of bearing platform (7) rear end has seted up draw-in groove (2), draw-in groove (2) embedded have sword piece (3), and the center of sword piece (3) has seted up screw A (4), screw A (4) female connection has gim peg (5), and bearing platform (7) department of screw A (4) lower extreme has seted up screw B (6), sunken groove (10) have been seted up on the surface of bearing platform (7), and the top embedding in sunken groove (10) has lug (9), lug (9) integrated into one piece is in the bottom of sword piece (3).

2. The cutting insert of a silicon nitride-based sintered body according to claim 1, wherein: the surface of the cutter bar (1) at the rear end of the clamping groove (2) is provided with a clamping platform (8).

3. The cutting insert of a silicon nitride-based sintered body according to claim 1, wherein: the surface of the cutter bar (1) is electroplated with a zinc coating (11).

4. The cutting insert of a silicon nitride-based sintered body according to claim 1, wherein: the notch of the screw hole A (4) is turned into a thread-free inner wall.

5. The cutting insert of a silicon nitride-based sintered body according to claim 1, wherein: one corner of the front end of the cutter block (3) is polished to be an arc-shaped outer corner.