阅读说明：本技术 一种复合式涂层pcbn切削刀具及其制备方法 (Composite coating PCBN cutting tool and preparation method thereof ) 是由 张洁泓 郑家龙 于 2021-07-05 设计创作，主要内容包括：本发明涉及切削加工领域,具体的说是一种复合式涂层PCBN切削刀具及其制备方法；包括刀片、刀体和第一螺钉；所述刀体一端开设有刀槽；所述刀片表面设置有一层复合式涂层PCBN,刀片通过第一螺钉安装在刀槽内,该复合式涂层PCBN切削刀具还包括滑条、第二螺钉和V形块；所述刀体内部开设有与刀槽相通的第一滑槽；所述第一滑槽位于刀槽的正下方；所述刀体端面开设有第二滑槽；通过滑条带动刀片移动,通过第二螺钉将滑条固定在第一滑槽内,同时配合V形块稳定刀片的切削方向,当刀片的刀刃磨损后可能够对其进行打磨之后的重新安装定位,使复合式涂层PCBN切削刀具重新投入使用,实现刀片的重复利用,节约资源；本发明具有操作方便,经济实用的特点。(The invention relates to the field of cutting processing, in particular to a composite coating PCBN cutting tool and a preparation method thereof; comprises a blade, a cutter body and a first screw; one end of the cutter body is provided with a cutter groove; the composite coating PCBN cutting tool comprises a tool groove, a blade, a slide bar, a first screw, a second screw and a V-shaped block, wherein the surface of the blade is provided with a layer of composite coating PCBN; a first chute communicated with the cutter groove is formed in the cutter body; the first sliding groove is positioned right below the cutter groove; the end surface of the cutter body is provided with a second sliding chute; the slide bar drives the blade to move, the slide bar is fixed in the first sliding groove through the second screw, the cutting direction of the blade is stabilized by matching with the V-shaped block, and the blade can be remounted and positioned after being polished after the blade is worn, so that the composite coating PCBN cutting tool is put into use again, the blade is recycled, and resources are saved; the invention has the characteristics of convenient operation, economy and practicality.)

1. A composite coating PCBN cutting tool comprises a blade (1), a tool body (2) and a first screw (4); one end of the cutter body (2) is provided with a cutter groove (21); blade (1) surface is provided with one deck combined type coating PCBN, and install in sword groove (21) blade (1) through first screw (4), its characterized in that: the composite coating PCBN cutting tool also comprises a slide bar (3), a second screw (5) and a V-shaped block (6); a first chute (22) communicated with the cutter groove (21) is formed in the cutter body (2); the first sliding groove (22) is positioned right below the cutter groove (21); a second sliding chute (23) is formed in the end face of the cutter body (2); the second sliding chute (23) is long-strip-shaped, and the second sliding chute (23) is arranged above the first sliding chute (22) and communicated with the first sliding chute (22); the sliding strip (3) is connected in the first sliding groove (22) in a sliding mode, and a first threaded hole (31) and a second threaded hole (32) are formed in the end portion of the sliding strip (3); the blade (1) is fixedly connected above a first threaded hole (31) of the sliding strip (3) through a first screw (4); the second screw (5) penetrates through the second sliding groove (23) and fixes the sliding strip (3) in the first sliding groove (22) through a second threaded hole (32) of the sliding strip (3); the end surface of the cutter body (2) is provided with a third chute (24) communicated with the cutter groove (21); the V-shaped block (6) is clamped on the sliding strip (3) and is connected with the third sliding groove (24) in a sliding mode.

2. A composite coated PCBN cutting tool as claimed in claim 1, wherein: fourth sliding grooves (25) are symmetrically formed in the cutter body (2) at two sides of the first sliding groove (22); the fourth sliding groove (25) is communicated with the cutter groove (21); supports (62) which are integrated with the V-shaped blocks (6) are arranged below two ends of the V-shaped blocks; the support (62) is matched with the fourth sliding groove (25), and the support (62) is connected in the corresponding fourth sliding groove (25) in a sliding manner.

3. A composite coated PCBN cutting tool as claimed in claim 2, wherein: the cross sections of the support (62) and the fourth sliding groove (25) are convex and are matched with each other.

4. A composite coated PCBN cutting tool as claimed in claim 3, wherein: the contact part of the V-shaped block (6) and the slide bar (3) is provided with a first sawtooth (7); one surface of the slide bar (3) which is contacted with the blade (1) is provided with second saw teeth (71); the first sawteeth (7) and the second sawteeth (71) are meshed with each other, and the tooth space directions of the first sawteeth and the second sawteeth are perpendicular to the sliding strip (3).

5. A composite coated PCBN cutting tool as claimed in claim 4, in which: the tooth tip direction of the first sawtooth (7) points to one side of the slide bar (3) departing from the blade (1) and inclines; the tooth tip direction of the second saw teeth (71) points to one side of the V-shaped block (6) close to the blade (1) and inclines.

6. A composite coated PCBN cutting tool as claimed in claim 5, in which: the side wall of the second threaded hole (32) of the slide bar (3) is symmetrically provided with two square grooves (33) far away from the center of the thread; a fastening block (34) is connected in the square groove (33) in a sliding manner; the fastening block (34) can abut against the second screw (5) at the end which is close to the second screw (5) under the action of the second screw, and the end which deviates from the second screw can abut against the side wall of the first sliding chute (22).

7. A composite coated PCBN cutting tool as claimed in claim 6, in which: the cross section of the end, close to the fastening block (34), is triangular.

8. The composite coated PCBN cutting tool as set forth in claim 7, wherein: one end that fastening block (34) deviated from mutually is provided with third sawtooth (8), the tooth's socket direction and the draw runner (3) slip direction of third sawtooth (8) are perpendicular.

9. A method of making a composite coated PCBN cutting tool, the method being suitable for use with the composite coated PCBN cutting tool of any one of claims 1-8, wherein: the preparation method comprises the following steps:

s1: when the tool is manufactured, a worker firstly manufactures the tool groove (21) in the tool body (2) through a milling machine, then manufactures the first sliding groove (22), the second sliding groove (23), the third sliding groove (24) and the fourth sliding groove (25) in the tool body (2) through a drilling machine, and finally manufactures the V-shaped block (6), the sliding strip (3) and the fastening block (34) through a numerical control machine;

s2: a worker respectively forms a first threaded hole (31) and a second threaded hole (32) at two ends of the sliding strip (3) through a drilling machine, and two square grooves (33) are symmetrically formed in the side wall of the second threaded hole (32) far away from the center of the thread;

s3: a worker installs the blade (1) above a first threaded hole (31) of the sliding strip (3) through a first screw (4), the V-shaped block (6) is clamped on the sliding strip (3), the fastening block (34) is placed in the square groove (33), the sliding strip (3) is aligned to the first sliding groove (22), the blade (1) is aligned to the cutter groove (21), the V-shaped block (6) is aligned to the third sliding groove (24), the whole body is placed into the cutter body (2) in a sliding mode, a second screw (5) penetrates through the second sliding groove (23) and is screwed in a second threaded hole (32) of the sliding strip (3), the position of the sliding strip (3) in the first sliding groove (22) is fixed, and therefore preparation of the composite coating PCBN cutting tool is completed.

Technical Field

The invention relates to the field of cutting machining, in particular to a composite coating PCBN cutting tool and a preparation method thereof.

Background

The cutting tool is a tool for material cutting in machine manufacturing, which is basically used for cutting metal materials, and this requires a high hardness of the insert, and the contact portion between the cutting edge and the material generates high temperature due to frictional heat during cutting, so that the insert needs to have a certain high temperature resistance in addition to the high hardness; polycrystalline cubic boron carbide (PCBN) is a superhard blade material, can keep the characteristic of high hardness at high temperature, has the hardness which is second to diamond and is far higher than other materials, and improves the cutting performance by adding a PCBN coating on the surface of the blade, so that the composite coating PCBN cutting tool is applied to various fields of cutting machining; however, the composite coating PCBN cutting tool has the problems of abrasion and tool breakage of the blade in the use process, so that a worker needs to replace the new blade, the composite coating PCBN cutting tool can be put into use again, and the production cost is increased.

The chinese patent with application number CN104841963A discloses a cutting tool, which comprises a tool body, a blade and a positioning plate, wherein the head of the tool body is provided with a blade groove, the blade groove comprises a blade accommodating groove and a positioning plate accommodating groove which are communicated, the blade is installed in the blade accommodating groove through a first fastening screw, the positioning plate is installed in the positioning plate accommodating groove through a second fastening screw, the positioning plate is provided with an elastic positioning claw which is in contact fit with one side positioning surface of the blade and can be elastically deformed, the blade groove is internally provided with a positioning flank plate which is in contact fit with the side positioning surface, and when the first fastening screw is tightened, the elastic positioning claw and the positioning flank plate which are in contact fit with the same side positioning surface of the blade compress the blade together; cutting tool among this technical scheme just makes the contact mode of blade and cutter body be four point contact, increases cutting tool's cutting accuracy, but cutting tool's blade, location flank board and locating plate all are fixed among this technical scheme, and can not remove, and after the blade carried out long-time work, the blade can appear wearing and tearing, the condition of collapsing the sword, therefore the staff need change the blade of renewal, and cutting tool just can drop into operation again, has increased manufacturing cost.

In view of this, in order to overcome the above technical problems, the present invention provides a composite pattern layer PCBN cutting tool and a manufacturing method thereof, which solve the above technical problems.

Disclosure of Invention

In order to make up for the defects of the prior art, the invention provides a composite coating PCBN cutting tool and a preparation method thereof.

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a composite coating PCBN cutting tool, which comprises a blade, a tool body and a first screw; one end of the cutter body is provided with a cutter groove; the composite coating PCBN cutting tool comprises a tool groove, a blade, a slide bar, a first screw, a second screw and a V-shaped block, wherein the surface of the blade is provided with a layer of composite coating PCBN; a first chute communicated with the cutter groove is formed in the cutter body; the first sliding groove is positioned right below the cutter groove; the end surface of the cutter body is provided with a second sliding chute; the second sliding chute is in a strip shape, is arranged above the first sliding chute and is communicated with the first sliding chute; the sliding strip is connected in the first sliding groove in a sliding mode, and a first threaded hole and a second threaded hole are formed in the end portion of the sliding strip; the blade is fixedly connected above the first threaded hole of the sliding strip through a first screw; the second screw penetrates through the second sliding groove and fixes the sliding strip in the first sliding groove through a second threaded hole of the sliding strip; the end surface of the cutter body is provided with a third chute communicated with the cutter groove; the V-shaped block is clamped on the sliding strip and is in sliding connection with the third sliding groove;

when the composite coating PCBN cutting tool works, the situation that the blade is abraded and broken occurs in the using process, so that a worker needs to replace the new blade, the composite coating PCBN cutting tool can be put into use again, and the production cost is increased;

therefore, when the cutting edge of the blade is damaged, the first screw is unscrewed to take out the blade, the blade is fixed above the first threaded hole of the slide bar again through the first screw after polishing, the second screw is unscrewed to enable the slide bar to slide in the first sliding groove, the second screw is screwed to reposition the slide bar after the edge of the blade is leveled with the edge of the cutter groove again to enable the cutting tool to be put into production again, the center of the V-shaped block is provided with the first through groove due to vibration generated during the working of the cutting tool, the blade is prevented from being damaged due to collision between the cutting edge and the V-shaped block, the second through grooves are also arranged on the measuring position surfaces at the two ends of the V-shaped block, the two side position surfaces of the V-shaped block are equally divided into two contact areas, the two side contact areas at the included angle are protruded by 0-0.5 mm and are made of elastic materials, the four-point contact between the V-shaped block and the blade is kept to more stabilize the cutting direction of the blade, the machining precision of the cutting tool is improved;

according to the invention, the slide bar drives the blade to move, the slide bar is fixed in the first sliding groove through the second screw, and the cutting direction of the blade is stabilized by matching with the V-shaped block, so that the blade can be remounted and positioned after being polished after the cutting edge of the blade is worn, the composite coating PCBN cutting tool is put into use again, the blade is recycled, and the resource is saved.

Preferably, the cutter body is internally provided with fourth sliding chutes symmetrically arranged at two sides of the first sliding chute; the fourth chute is communicated with the cutter groove; supports integrated with the V-shaped blocks are arranged below two ends of each V-shaped block; the support is matched with the fourth sliding groove and is connected in the corresponding fourth sliding groove in a sliding manner; during operation, because the support of the V-shaped block is matched with the fourth sliding groove, when the V-shaped block moves out of the third sliding groove, the V-shaped block is prevented from moving along the two sides of the sliding strip relatively due to vibration generated during operation, the cutting direction of the blade is stabilized, and finish machining is realized.

Preferably, the cross sections of the support and the fourth sliding groove are convex and are matched with each other; when the tool is in work, the support of the V-shaped block and the cross section of the fourth sliding groove are mutually matched in a convex shape, so that the V-shaped block cannot vibrate in the direction vertical to the contact surface of the sliding strip, the cutting direction of the blade is further stabilized, and finish machining is realized.

Preferably, the contact part of the V-shaped block and the slide bar is provided with a first sawtooth; one side of the sliding strip, which is contacted with the blade, is provided with second sawteeth; the first saw teeth and the second saw teeth are meshed with each other, and the tooth space directions of the first saw teeth and the second saw teeth are perpendicular to the direction of the sliding strip; when the cutter works, the first saw teeth on the V-shaped block and the second saw teeth on the sliding strip are meshed with each other, so that the V-shaped block can be well clamped at a certain position on the sliding strip and cannot slide along the direction of the sliding strip, meanwhile, the structure enables the V-shaped block and the sliding strip to be conveniently assembled and disassembled, in the working process, a cutting edge at one end of the blade is abraded, the blade can be polished, one end of the polished blade is shortened, when the cutting edge at the other end of the blade is replaced in the direction of adjusting the blade for cutting, the second screw is unscrewed, the sliding strip, the blade and the V-shaped block are taken out from the cutter body together, the blade with the adjusted direction is fixed on the sliding strip again through the first screw, the V-shaped block is taken up from the sliding strip and is placed on the sliding strip again, so that the measuring position surface of the V-shaped block is attached to the side surface of the blade, the sliding strip corresponds to the first sliding groove, and the support of the V-shaped block integrally moves into the cutter body corresponding to the fourth groove, the blade edge is flush with the knife groove edge, the position of the slide bar is fixed through the second screw, the operation is simple, and the utilization rate of the blade is increased.

Preferably, the tooth tip direction of the first sawtooth is inclined towards one side of the slide bar, which is far away from the blade; the tooth tip direction of the second saw teeth points to one side of the V-shaped block close to the blade to incline; during operation, receive the influence of cutting force, the V-arrangement piece will receive the blade to its effort of producing along the draw runner direction to and the limiting action of support to the V-arrangement piece, the V-arrangement piece receives directional draw runner and deviates from the resultant force of blade one side slope, under the circumstances of first sawtooth and the mutual meshing of second sawtooth, the directional draw runner of the tooth point direction of first sawtooth deviates from blade one side slope, the directional V-arrangement piece of the tooth point direction of second sawtooth is close to blade one side slope and will make the block that the V-arrangement piece can be more firm on the draw runner.

Preferably, two square grooves are symmetrically formed in the side wall of the second threaded hole of the slide bar away from the center of the thread; a fastening block is connected in the square groove in a sliding manner; one end of the fastening block, which is close to the fastening block under the action of the second screw, can abut against the second screw, and the other end of the fastening block, which is far away from the fastening block at the same time, can abut against the side wall of the first sliding chute; during operation, when the second screw passes the second spout and twists down in the second screw hole of draw runner, the fastening block will receive the extrusion, and the one end that is close to mutually supports the second screw, and the one end that deviates from mutually supports on the lateral wall of first spout, utilizes the frictional force between fastening block and the first spout lateral wall, makes the location of draw runner in first spout more firm.

Preferably, the cross section of the end close to the fastening block is triangular; during operation, the cross-sectional shape of the end that is close to mutually because of the fastening block is triangle-shaped, plays the guide effect to the second screw, is favorable to the second screw to screw up downwards in the second screw hole of draw runner, and the pointed end of fastening block can block in the screw thread department of second screw simultaneously, avoids making the second screw shake from the second screw hole of draw runner and drop because of the vibrations that cutting tool produced at the during operation.

Preferably, a third sawtooth is arranged at one end of the fastening block, which is far away from the fastening block, and the tooth space direction of the third sawtooth is vertical to the sliding direction of the sliding strip; during operation, because the one end that the fastening block deviates from mutually is provided with the third sawtooth, has reduced the area of contact of the one end that the fastening block deviates from mutually and first spout, and under the condition that same pressure was applyed to the second screw, the frictional force between fastening block and the first spout lateral wall will increase, makes the location of draw runner in first spout more firm.

A preparation method of a composite coating PCBN cutting tool is suitable for the composite coating PCBN cutting tool, and comprises the following steps:

s1: when the tool is manufactured, a worker firstly manufactures a tool slot in the tool body through a milling machine, then manufactures a first sliding groove, a second sliding groove, a third sliding groove and a fourth sliding groove in the tool body through a drilling machine, and finally manufactures a V-shaped block, a sliding strip and a fastening block through a numerical control machine;

s2: a worker respectively forms a first threaded hole and a second threaded hole at two ends of the sliding strip through a drilling machine, and two square grooves are symmetrically formed in the side wall of the second threaded hole away from the center of the thread;

s3: the staff installs the blade in the first screw hole top of draw runner through first screw, and V-arrangement piece block is on the draw runner, places the fastening piece in square inslot to aim at first spout with the draw runner, the blade is aimed at the sword groove, and the V-arrangement piece is aimed at the third spout, and whole together slides and puts into the cutter body inside, passes the second spout with the second screw and screws up in the second screw hole of draw runner, fixes the position of draw runner in first spout, thereby has accomplished the preparation to combined type coating PCBN cutting tool.

The invention has the following beneficial effects:

1. the slide bar slides in the first sliding groove and simultaneously drives the blades to move together, when the cutting edge is damaged, the slide bar can be moved according to the actual condition of the length of the re-polished blades so as to adjust the positions of the blades, and when the edges of the blades and the edges of the cutter grooves are leveled again, the positions of the slide bar are fixed through the second screws, so that the PCBN cutting tool with the composite coating is put into use again, the utilization rate of the blades is increased, and resources are saved.

2. When the cutting edge at one end of the blade is abraded, the blade is ground, one end of the ground blade is shortened, and the cutting edge at the other end of the blade is replaced in the direction of adjusting the blade to perform cutting operation, the V-shaped block can always keep the side positioning surface of the V-shaped block attached to the side surface of the slide bar through the sawtooth structure matched with the slide bar and the convex support which is arranged below the two front ends of the V-shaped block and is integrally structured with the V-shaped block, so that the cutting direction of the blade is stabilized.

3. The fastening block is extruded by the second screw, one end close to the fastening block abuts against the second screw, one end away from the fastening block abuts against the side wall of the first sliding groove, the section of the end close to the fastening block is triangular, the fastening block plays a role in guiding the second screw, and the end away from the fastening block is provided with the third saw teeth, so that the friction force between the fastening block and the side wall of the first sliding groove is increased, and the slide bar is positioned in the first sliding groove more firmly.

Drawings

The invention is further described with reference to the following figures and embodiments.

FIG. 1 is a perspective view of a composite coated PCBN cutting tool of the present invention;

FIG. 2 is a perspective view of a cutter body in the composite coated PCBN cutting tool of the present invention;

FIG. 3 is a perspective view of a V-shaped block in the composite coated PCBN cutting tool of the present invention;

FIG. 4 is a perspective view of a slide bar in the composite coated PCBN cutting tool of the present invention;

FIG. 5 is a flow chart of a method of making a composite coated PCBN cutting tool in accordance with the present invention;

in the figure: 1. a blade; 2. a cutter body; 4. a first screw; 21. a cutter groove; 3. a slide bar; 5. a second screw; 6. a V-shaped block; 22. a first chute; 23. a second chute; 31. a first threaded hole; 32. a second threaded hole; 24. a third chute; 25. a fourth chute; 62. a support; 7. a first saw tooth; 71. a second saw tooth; 33. a square groove; 34. a fastening block; 8. and a third sawtooth.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1 to 5, the composite coated PCBN cutting tool of the present invention comprises an insert 1, a tool body 2 and a first screw 4; one end of the cutter body 2 is provided with a cutter groove 21; the composite coating PCBN cutting tool is characterized in that a layer of composite coating PCBN is arranged on the surface of the blade 1, the blade 1 is installed in the cutter groove 21 through a first screw 4, and the composite coating PCBN cutting tool further comprises a slide bar 3, a second screw 5 and a V-shaped block 6; a first chute 22 communicated with the cutter groove 21 is formed in the cutter body 2; the first chute 22 is positioned right below the cutter groove 21; the end surface of the cutter body 2 is provided with a second sliding chute 23; the second sliding chute 23 is long, and the second sliding chute 23 is arranged above the first sliding chute 22 and communicated with the first sliding chute 22; the sliding strip 3 is connected in the first sliding groove 22 in a sliding manner, and a first threaded hole 31 and a second threaded hole 32 are respectively formed in the end part of the sliding strip 3; the blade 1 is fixedly connected above a first threaded hole 31 of the slide bar 3 through a first screw 4; the second screw 5 passes through the second sliding chute 23 to fix the sliding bar 3 in the first sliding chute 22 through the second threaded hole 32 of the sliding bar 3; the end surface of the cutter body 2 is provided with a third chute 24 communicated with the cutter groove 21; the V-shaped block 6 is clamped on the slide bar 3 and is in sliding connection with the third sliding groove 24;

when the composite coating PCBN cutting tool works, the situation that the blade is abraded and broken occurs in the using process, so that a worker needs to replace the new blade, the composite coating PCBN cutting tool can be put into use again, and the production cost is increased;

therefore, in the invention, when the cutting edge of the blade 1 is damaged, the first screw 4 is unscrewed to take out the blade 1, after polishing, the blade 1 is fixed above the first threaded hole 31 of the slide bar 3 again through the first screw 4, the second screw 5 is unscrewed to enable the slide bar 3 to slide in the first sliding groove 22, after the edge of the blade 1 is leveled with the edge of the cutter groove 21 again, the second screw 5 is screwed to reposition the slide bar 3, so that the cutting tool is put into production again, because the cutting tool can vibrate during working, the center of the V-shaped block 6 is provided with the first through groove 61, the blade 1 is prevented from being damaged due to collision between the cutting edge and the V-shaped block 6, the second through grooves 63 are also arranged on the measuring position surfaces at the two ends of the V-shaped block 6, the two positioning surfaces at the two sides of the V-shaped block 6 are equally divided into two contact areas, the two contact areas at the included angle protrude by 0-0.5 mm and are made of elastic material, the four-point contact between the V-shaped block 6 and the blade 1 is kept to stabilize the cutting direction of the blade 1, the machining precision of the cutting tool is improved;

according to the invention, the slide bar 3 drives the blade 1 to move, the slide bar 3 is fixed in the first sliding groove 22 through the second screw 5, and the cutting direction of the blade 1 is stabilized by matching with the V-shaped block 6, so that the blade 1 can be remounted and positioned after being polished after being worn, the composite coating PCBN cutting tool is put into use again, the blade 1 is recycled, and the resources are saved.

As a specific embodiment of the present invention, the cutter body 2 is provided with fourth sliding grooves 25 symmetrically formed at two sides of the first sliding groove 22; the fourth chute 25 is communicated with the cutter groove 21; the lower parts of the two ends of the V-shaped block 6 are respectively provided with a support 62 which is integrated with the V-shaped block; the support 62 is matched with the fourth sliding chute 25, and the support 62 is connected in the corresponding fourth sliding chute 25 in a sliding manner; during operation, because the support 62 of the V-shaped block 6 is matched with the fourth sliding groove 25, when the V-shaped block 6 moves out of the third sliding groove 24, the V-shaped block 6 is prevented from moving along the two sides of the slide bar 3 due to vibration generated during operation, the cutting direction of the blade 1 is stabilized, and finish machining is realized.

As a specific embodiment of the present invention, the cross sections of the support 62 and the fourth sliding chute 25 are both convex, and are matched with each other; during operation, because the cross sections of the support 62 of the V-shaped block 6 and the fourth sliding groove 25 are mutually matched and convex, the V-shaped block 6 cannot vibrate in the direction vertical to the contact surface of the slide bar 3, the cutting direction of the blade 1 is further stabilized, and finish machining is realized.

As a specific embodiment of the present invention, the contact portion of the V-block 6 and the slide bar 3 is provided with a first saw tooth 7; one surface of the slide bar 3, which is in contact with the blade 1, is provided with second sawteeth 71; the first saw teeth 7 and the second saw teeth 71 are meshed with each other, and the tooth space directions of the first saw teeth and the second saw teeth are vertical to the direction of the sliding strip 3; when the tool is in operation, the first saw teeth 7 on the V-shaped block 6 are meshed with the second saw teeth 71 on the slide bar 3, so that the V-shaped block 6 can be well clamped at a certain position on the slide bar 3, and can not slide along the direction of the slide bar 3, meanwhile, the structure enables the V-shaped block 6 and the slide bar 3 to be conveniently assembled and disassembled, in the working process, the cutting edge at one end of the blade 1 is worn, the blade 1 can be polished, one end of the polished blade 1 is shortened, when the cutting edge at the other end is replaced in the direction of the blade 1 for cutting, the second screw 5 is unscrewed, the slide bar 3, the blade 1 and the V-shaped block 6 are taken out from the tool body 2 together, the blade 1 with the adjusted direction is fixed on the slide bar 3 again through the first screw 4, the V-shaped block 6 is lifted from the slide bar 3 and is placed on the slide bar 3 again, so that the measuring position surface of the V-shaped block 6 is attached to the side surface of the blade 1, the slide bar 3 corresponds to the first sliding groove 22, the support 62 of the V-shaped block 6 corresponds to the fourth sliding groove 25 and is integrally moved and placed into the cutter body 2, the edge of the blade 1 is flush with the edge of the cutter groove 21, the position of the slide bar 3 is fixed through the second screw 5, the operation is simple, and the utilization rate of the blade 1 is increased.

As a specific embodiment of the present invention, the direction of the tooth tip of the first sawtooth 7 is inclined toward the side of the slide bar 3 away from the blade 1; the tooth tip direction of the second saw tooth 71 is inclined towards one side of the V-shaped block 6 close to the blade 1; in operation, under the influence of cutting force, the V-shaped block 6 is subjected to the action force generated by the blade 1 on the V-shaped block 6 along the direction of the slide bar 3, and the limit action of the support 62 on the V-shaped block 6, the V-shaped block 6 is subjected to the resultant force of the inclination of the side, away from the blade 1, of the slide bar 3, directed to the slide bar 3, of the tooth tip direction of the first saw tooth 7, and under the condition that the first saw tooth 7 and the second saw tooth 71 are meshed with each other, the inclination of the side, close to the blade 1, of the V-shaped block 6, of the tooth tip direction of the second saw tooth 71 enables the V-shaped block 6 to be clamped on the slide bar 3 more stably.

As a specific embodiment of the present invention, two square grooves 33 are symmetrically formed on the side wall of the second threaded hole 32 of the slide bar 3 away from the center of the thread; a fastening block 34 is connected in the square groove 33 in a sliding manner; the end of the fastening block 34 close to the second screw 5 can abut against the second screw 5, while the end facing away from the second screw can abut against the side wall of the first runner 22; in operation, when the second screw 5 passes through the second sliding groove 23 and is screwed downwards in the second threaded hole 32 of the sliding bar 3, the fastening block 34 is extruded, the end close to the second screw 5 abuts against the side wall of the first sliding groove 22, and the end away from the second screw abuts against the side wall of the first sliding groove 22, so that the sliding bar 3 is positioned more firmly in the first sliding groove 22 by using the friction force between the fastening block 34 and the side wall of the first sliding groove 22.

As a specific embodiment of the present invention, the cross-sectional shape of the end of the fastening block 34 adjacent to the fastening block is triangular; during operation, because of the cross sectional shape of the one end that fastening block 34 is close to mutually for triangle-shaped, play the guide effect to second screw 5, be favorable to second screw 5 to screw up in the second screw hole 32 of draw runner 3 downwards, the pointed end of fastening block 34 can block in the screw thread department of second screw 5 simultaneously, avoids making second screw 5 shake from the second screw hole 32 of draw runner 3 and drop because of the vibrations that cutting tool produced at the during operation.

As a specific embodiment of the present invention, a third saw tooth 8 is disposed at an end of the fastening block 34 facing away from the fastening block, and a tooth space direction of the third saw tooth 8 is perpendicular to a sliding direction of the slide bar 3; in operation, because the third sawtooth 8 is arranged at the end of the fastening block 34, which is away from the first sliding groove 22, the contact area between the end of the fastening block 34, which is away from the first sliding groove, and the first sliding groove 22 is reduced, and under the condition that the second screw 5 applies the same pressure, the friction force between the fastening block 34 and the side wall of the first sliding groove 22 is increased, so that the slide bar 3 is positioned more firmly in the first sliding groove 22.

A preparation method of a composite coating PCBN cutting tool is suitable for the composite coating PCBN cutting tool, and comprises the following steps:

s1: when the cutter is manufactured, a worker firstly manufactures the cutter groove 21 in the cutter body 2 through a milling machine, then manufactures the first sliding groove 22, the second sliding groove 23, the third sliding groove 24 and the fourth sliding groove 25 in the cutter body 2 through a drilling machine, and finally manufactures the V-shaped block 6, the sliding strip 3 and the fastening block 34 through a numerical control machine;

s2: a worker respectively forms a first threaded hole 31 and a second threaded hole 32 at two ends of the slide bar 3 through a drilling machine, and two square grooves 33 are symmetrically formed in the side wall of the second threaded hole 32 away from the center of the thread;

s3: a worker installs the blade 1 above a first threaded hole 31 of the slide bar 3 through a first screw 4, the V-shaped block 6 is clamped on the slide bar 3, the fastening block 34 is placed in the square groove 33, the slide bar 3 is aligned to the first sliding groove 22, the blade 1 is aligned to the knife groove 21, the V-shaped block 6 is aligned to the third sliding groove 24, the whole body is placed into the cutter body 2 in a sliding mode, a second screw 5 penetrates through the second sliding groove 23 and is screwed in a second threaded hole 32 of the slide bar 3, the position of the slide bar 3 in the first sliding groove 22 is fixed, and therefore the preparation of the composite coating PCBN cutting tool is completed.

The specific working process is as follows:

in the invention, when the cutting edge of the blade 1 is damaged, the first screw 4 is unscrewed to take out the blade 1, after polishing, the blade 1 is fixed above the first threaded hole 31 of the slide bar 3 again through the first screw 4, the second screw 5 is unscrewed to enable the slide bar 3 to slide in the first sliding groove 22, after the edge of the blade 1 is leveled with the edge of the cutter groove 21 again, the second screw 5 is screwed to reposition the slide bar 3, so that the cutting tool is put into production again, because the cutting tool can vibrate during working, the center of the V-shaped block 6 is provided with the first through groove, the blade 1 is prevented from being damaged due to collision between the cutting edge and the V-shaped block 6, the measuring location surfaces at the two ends of the V-shaped block 6 are also provided with the second through grooves, the location surfaces at the two sides of the V-shaped block 6 are equally divided into two contact areas, the contact areas at the two sides at the included angle are protruded by 0-0.5 mm and are made of elastic materials, the four-point contact between the V-shaped block 6 and the blade 1 is kept to stabilize the cutting direction of the blade 1, the machining precision of the cutting tool is improved, the support 62 of the V-shaped block 6 is matched with the fourth sliding groove 25, when the V-shaped block 6 moves out of the third sliding groove 24, the V-shaped block 6 is prevented from moving relatively along the directions of two sides of the sliding strip 3 due to vibration generated during working, the cutting direction of the blade 1 is stabilized, finish machining is achieved, the cross sections of the support 62 of the V-shaped block 6 and the fourth sliding groove 25 are in a mutually matched convex shape, the V-shaped block 6 cannot vibrate along the direction vertical to the contact surface of the sliding strip 3, the cutting direction of the blade 1 is further stabilized, finish machining is achieved, the first saw teeth 7 on the V-shaped block 6 are meshed with the second saw teeth 71 on the sliding strip 3, the V-shaped block 6 can be well clamped at a certain position on the sliding strip 3 and cannot slide along the direction of the sliding strip 3, and meanwhile the structure enables the V-shaped block 6 and the sliding strip 3 to be assembled, The dismounting is convenient, during the working process, the cutting edge at one end of the blade 1 is worn, the blade 1 is ground, one end of the ground blade 1 is shortened, when the cutting edge at the other end is replaced in the direction of adjusting the blade 1 for cutting, the second screw 5 is unscrewed, the slide bar 3, the blade 1 and the V-shaped block 6 are taken out from the cutter body 2 together, the blade 1 with the adjusted direction is fixed on the slide bar 3 again through the first screw 4, the V-shaped block 6 is taken up from the slide bar 3 and is placed on the slide bar 3 again to ensure that the measuring position surface of the V-shaped block 6 is attached to the side surface of the blade 1, then the slide bar 3 corresponds to the first chute 22, the support 62 of the V-shaped block 6 is integrally moved into the cutter body 2 corresponding to the fourth chute 25 to ensure that the edge of the blade 1 is flush with the edge of the cutter groove 21, the position of the slide bar 3 is fixed through the second screw 5, the operation is simple, the utilization rate of the blade 1 is increased, under the influence of cutting force, the V-shaped block 6 is subjected to the acting force generated by the blade 1 on the V-shaped block 6 along the direction of the slide bar 3, and the limiting effect of the support 62 on the V-shaped block 6, the V-shaped block 6 is subjected to the resultant force of the inclination of the V-shaped block 6 towards the side of the slide bar 3 away from the blade 1, when the first saw tooth 7 and the second saw tooth 71 are meshed with each other, the tooth tip direction of the first saw tooth 7 is inclined towards the side of the slide bar 3 away from the blade 1, the tooth tip direction of the second saw tooth 71 is inclined towards the side of the V-shaped block 6 close to the blade 1, so that the V-shaped block 6 can be clamped on the slide bar 3 more stably, when the second screw 5 is screwed downwards in the second threaded hole 32 of the slide bar 3 through the second sliding chute 23, the fastening block 34 is pressed, the end close to the second screw 5, the end away from the side wall of the first sliding chute 22 is abutted against the side wall of the first sliding chute 22, by utilizing the friction force between the fastening block 34 and the side wall of the first sliding chute 22, the slide bar 3 is positioned more firmly in the first sliding groove 22, the cross section of one end, close to the fastening block 34, of the fastening block is triangular, the second screw 5 is guided, the second screw 5 can be screwed downwards in the second threaded hole 32 of the slide bar 3 conveniently, meanwhile, the tip of the fastening block 34 can be clamped at the thread of the second screw 5, the second screw 5 is prevented from vibrating and falling off from the second threaded hole 32 of the slide bar 3 due to vibration generated when a cutting tool works, the contact area between the end, away from the fastening block 34, of the fastening block 34 and the first sliding groove 22 is reduced due to the fact that the third saw teeth 8 are arranged at the end, away from the fastening block 34, of the fastening block 34 and the side wall of the first sliding groove 22 is increased under the condition that the second screw 5 applies the same pressure, and the slide bar 3 is positioned more firmly in the first sliding groove 22;

s1: when the cutter is manufactured, a worker firstly manufactures the cutter groove 21 in the cutter body 2 through a milling machine, then manufactures the first sliding groove 22, the second sliding groove 23, the third sliding groove 24 and the fourth sliding groove 25 in the cutter body 2 through a drilling machine, and finally manufactures the V-shaped block 6, the sliding strip 3 and the fastening block 34 through a numerical control machine;

s2: a worker respectively forms a first threaded hole 31 and a second threaded hole 32 at two ends of the slide bar 3 through a drilling machine, and two square grooves 33 are symmetrically formed in the side wall of the second threaded hole 32 away from the center of the thread;

s3: a worker installs the blade 1 above a first threaded hole 31 of the slide bar 3 through a first screw 4, the V-shaped block 6 is clamped on the slide bar 3, the fastening block 34 is placed in the square groove 33, the slide bar 3 is aligned to the first sliding groove 22, the blade 1 is aligned to the knife groove 21, the V-shaped block 6 is aligned to the third sliding groove 24, the whole body is placed into the cutter body 2 in a sliding mode, a second screw 5 penetrates through the second sliding groove 23 and is screwed in a second threaded hole 32 of the slide bar 3, the position of the slide bar 3 in the first sliding groove 22 is fixed, and therefore the preparation of the composite coating PCBN cutting tool is completed.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.