CN112605411B - Grooving tool - Google Patents
Grooving tool Download PDFInfo
- Publication number
- CN112605411B CN112605411B CN202011407331.9A CN202011407331A CN112605411B CN 112605411 B CN112605411 B CN 112605411B CN 202011407331 A CN202011407331 A CN 202011407331A CN 112605411 B CN112605411 B CN 112605411B
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- China
- Prior art keywords
- cutter
- slit
- tool
- compression screw
- insert
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
- B23B27/14—Cutting tools of which the bits or tips or cutting inserts are of special material
- B23B27/18—Cutting tools of which the bits or tips or cutting inserts are of special material with cutting bits or tips or cutting inserts rigidly mounted, e.g. by brazing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
Abstract
The invention provides a grooving cutter, comprising: a cutter body, a cutting insert and a compression screw; the cutter body comprises a cutter head and a clamping part, the cutter head is provided with a cutter groove, and the cutter groove is used for accommodating the cutting blade; the knife groove is provided with a first slit which divides the knife groove into a first fixed part and a first elastic part; the first elastic part is provided with a second slit which is opened in the direction towards the cutter head; the second slit divides the first elastic part into a second fixing part and a second elastic part; the tool bit runs through first elasticity portion and first fixed part and has seted up and compress tightly the screw, compression screw installs compress tightly in the screw. The two slits are arranged, so that the cutting blade is accurately, stably and firmly positioned, and when the cutting blade is completely clamped, the second slit is closed close to the cutter head part, so that the pressing condition of the cutting blade can be observed more conveniently.
Description
Technical Field
The invention relates to the technical field of cutting tools, in particular to a grooving tool.
Background
The existing grooving cutter generally comprises a cutter body, a cutting blade and a compression screw, wherein the cutter body comprises a cutter head and a clamping part, the cutter head is provided with a cutter groove capable of accommodating the cutting blade, and the cutter groove extends from the cutter head to the clamping part and penetrates through the cutter body; the cutter groove comprises an upper positioning surface, a lower positioning surface and an axial positioning surface; the cutter groove is divided into a fixed part and an elastic part by a slit, wherein the upper positioning surface is positioned on the elastic part, and the lower positioning surface and the axial positioning surface are positioned on the first fixed part; during cutting, the cutting blade is assembled in the cutter groove, the lower cutter groove positioning surface is attached to the bottom surface of the blade, the axial cutter groove positioning surface is attached to the rear end surface of the blade, and the elastic part is displaced and deformed towards the direction of the lower positioning surface under the pressure of the compression screw so that the upper cutter groove positioning surface is attached to the top surface of the blade; patent CN201380005395.8 shows such a tool.
Under the prior art, in order to ensure the pressing effect of the cutter groove on the cutter blade, the upper positioning surface is often arranged to be inclined relative to the lower positioning surface, and the inclined direction is opened towards the clamping part and contracted towards the cutter head. Because the top surface and the bottom surface of the cutting blade are parallel, when the upper positioning surface of the cutter groove moves towards the top surface of the cutting blade under the pressure of the compression screw, the part of the upper positioning surface close to the direction of the cutter head is preferentially contacted with the top surface of the cutter blade, and when the compression screw continues to apply force, the part of the upper positioning surface towards the direction of the clamping part is finally contacted with the top surface of the cutter blade, so that the compression of the cutter blade in the cutter groove is completed; meanwhile, in order to restrict the lateral swing of the cutting insert in the pocket, the upper and lower seating surfaces are often provided in a convex or concave structure and are in contact engagement with the top and bottom surfaces of the cutting insert, respectively.
The prior art has the following defects: 1. the cutter groove needs to apply proper force to the elastic part through a compression screw, so that the upper positioning surface of the cutter groove can be in good contact with the top surface of the cutting blade, and the excessive or small force can cause insufficient pressing force or unstable positioning of the cutting blade, thereby reducing the service life of the cutter; 2 because the upper and lower positioning surfaces of the cutter groove and the top surface and the bottom surface of the blade matched with the upper and lower positioning surfaces are convex or concave, the contact surface of the cutter groove and the blade is positioned in the cutter body, and the contact condition of the blade and the cutter groove positioning surface cannot be observed from the outside.
Disclosure of Invention
The invention provides a grooving cutter, aiming at overcoming the defects of the prior art, ensuring that a cutting blade can be accurately, stably and firmly assembled in a cutter groove and ensuring the service life of the cutter.
In order to achieve the above object, an embodiment of the present invention provides a grooving tool including: a cutter body, a cutting insert and a compression screw; the cutter body comprises a cutter head and a clamping part, the cutter head is provided with a cutter groove, the cutter groove extends from the cutter head to the clamping part, the cutter groove comprises an upper positioning surface, a lower positioning surface and an axial positioning surface, and the cutter groove is used for accommodating the cutting blade; the knife groove is provided with a first slit which divides the knife groove into a first fixing part and a first elastic part, the upper positioning surface is positioned on the first elastic part, and the lower positioning surface and the axial positioning surface are positioned on the first fixing part; the tool bit penetrates through the first elastic part and the first fixing part and is provided with a compression screw hole, and the compression screw is arranged in the compression screw hole; the first elastic part is provided with a first slit, the first slit extends from the tool bit to the clamping part, and the first slit is opened in the direction towards the tool bit; the second slit divides the first elastic part into a second fixing part and a second elastic part; the part of the second sipe facing in the direction of the cutting head has a minimum clearance of 0 when the cutting insert is fully compressed.
Wherein, in a bottom view of the tool, the upper positioning surface is inclined relative to the lower positioning surface by an angle a, the angle a converging in a direction towards the cutting head, the angle a opening in a direction towards the clamping portion.
Wherein the upper and lower locating surfaces of the pocket are provided with projections or recesses in a direction substantially parallel to the compression screw axis.
Wherein the cutting insert is provided with an insert top face and an insert bottom face which are provided with projections or recesses in a direction substantially parallel to the compression screw axis.
Wherein, in a bottom view of the tool, the first slit is disposed deeper than the second slit in a direction from the tool bit to the clamping portion; the compression screw hole penetrates through two sides of the first slit, a compression surface is arranged at an opening at one end of the compression screw hole, and the compression surface is used for being matched with the compression screw to drive the first elastic part to move.
Wherein, in a bottom view of the tool, the compression surface is disposed above the first sipe in a direction generally parallel to the compression screw.
The scheme of the invention has the following beneficial effects:
1. the invention is provided with the second slit, the width of the second slit can limit the displacement distance of the first elastic part, so that the contact between the positioning surface on the cutter groove and the top surface of the cutting blade is better, the positioning of the cutting blade in the cutter groove is more stable, accurate and firm, and the service life of the cutter can be ensured;
2. the invention is provided with the second slit, so that when the cutting blade is installed, the contact condition of the cutting blade and the cutter body can be directly observed from the outside of the cutter body, and the installation operation of the cutting blade is more convenient.
Drawings
FIG. 1 is a schematic view of the assembly of the grooving tool of the present invention;
FIG. 2 is a front view of the grooving tool of the present invention;
FIG. 3 is a bottom view of the grooving tool of the present invention;
FIG. 4 is a cross-sectional view A-A of FIG. 2;
FIG. 5 is a cross-sectional view B-B of FIG. 2;
FIG. 6 is a schematic view of the grooving tool of the present invention in a fully compressed state;
FIG. 7 is a schematic view of a pocket of the grooving tool of the present invention;
FIG. 8 is a first schematic view of a cutting insert of the grooving tool of the present invention;
FIG. 9 is a second schematic view of a cutting insert of the grooving tool of the present invention;
FIG. 10 is a schematic view of a prior art sipe;
fig. 11 is a schematic view of a prior art tool assembly.
[ description of reference ]
1, a cutter body; 1 a-a cutter head; 1 b-a clamping portion; 2-a cutting insert; 3-a compression screw; 10-knife grooves; 10A-a first fixed part; 10B-a first resilient portion; 10 BA-second fixation; 10BB — second elastic part; 11-upper positioning surface; 11 a-upper locating face front end; 11 b-the rear end of the upper positioning surface; 12-lower positioning surface; 13-axial positioning surface; 14-first sipe; 15-second sipe; 16-a pressing screw hole; 17-a compression surface; 21-the bottom surface of the insert; 22-blade end face; 23-blade top surface.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
The invention provides a grooving cutter aiming at the risks that the existing cutter has insufficient pressing force and unstable positioning when a cutting blade is installed, the contact condition of a binding surface is difficult to confirm when the cutting blade is installed, and the like.
As shown in fig. 1 to 7, an embodiment of the present invention provides a grooving tool including: a cutter body 1, a cutting blade 2 and a compression screw 3; the cutter body 1 comprises a cutter head 1a and a clamping part 1b, the cutter head 1a is provided with a cutter groove 10, the cutter groove 10 extends from the cutter head 1a to the clamping part 1b, the cutter groove 10 comprises an upper positioning surface 11, a lower positioning surface 12 and an axial positioning surface 13, and the cutter groove 10 is used for accommodating the cutting blade 2; the knife slot 10 is provided with a first slit 14, the first slit 14 divides the knife slot 10 into a first fixing part 10A and a first elastic part 10B, the upper positioning surface 11 is positioned on the first elastic part 10B, and the lower positioning surface 12 and the axial positioning surface 13 are positioned on the first fixing part 10A; a second slit 15 is formed in the first elastic portion 10B, the second slit 15 extends from the cutting head 1a to the clamping portion 1B, and the second slit 15 is open in a direction toward the cutting head 1 a; the second slit 15 divides the first elastic portion 10B into a second fixed portion 10BA and a second elastic portion 10 BB; the cutter head 1a penetrates through the first elastic part 10B and the first fixing part 10A to be provided with a pressing screw hole 16, and the pressing screw 3 is installed in the pressing screw hole 16.
In the grooving tool according to the above embodiment of the present invention, when the cutting insert 2 is mounted, the cutting insert 2 is fitted in the pocket 10, the lower positioning surface 12 abuts against the insert bottom surface 21, and the axial positioning surface 13 abuts against the insert end surface 22 on the rear side; the first elastic part 10B is displaced and deformed towards the direction of the lower positioning surface 12 under the pressure of the compression screw 3, and the upper positioning surface 11 of the knife groove 10 is attached to the blade top surface 23; in a free state of the cutter body 1 without the cutting insert 2, the minimum clearance of the second thin slit 15 in the direction towards the cutter head is W1, and W1 is more than 0 mm; in the pressed state of the cutting insert 2, the smallest gap of the second slot 15 in the direction towards the cutting head is W2.
In the bottom view of the tool, the upper positioning surface 11 is inclined relative to the lower positioning surface 12 by an angle a, which decreases in the direction of the cutting head and which opens in the direction of the clamping portion 1 b.
In the grooving tool according to the above embodiment of the present invention, in a free state where the cutting insert 2 is not mounted on the tool body 1, a height difference H1 exists between the front end 11a of the upper positioning surface close to the tool bit 1a and the rear end 11b of the upper positioning surface close to the clamping portion 1b in the bottom view direction; in the present exemplary embodiment, when W1 — H1 is provided, the minimum gap of the second slot 15 changes to — H1 when the cutting insert 2 is fully pressed, and W2 — W1-H1 is 0, i.e.: the minimum clearance of the second slot 15 in the direction towards the cutting head 1a when the cutting insert 2 is fully compressed is 0; when W2 is 0, the second elastic portion 10BB is displaced and deformed until contacting the second fixed portion 10BA, and thus stops moving, so that by setting the H1, the displacement and deformation of the second elastic portion 10BB when pressing the cutting insert 2 can be controlled, and the pressing force applied to the cutting insert 2 can be controlled within a suitable range, thereby avoiding the situation that the portion of the upper positioning surface 11 of the pocket 10 facing the tool bit 1a and the insert top surface 23 are separated by the angle b, and the insert end surface 22 and the axial positioning surface 13 are separated by the gap X due to the excessive pressing force under the prior art conditions shown in fig. 10 and 11.
During press mounting of the cutting insert 2, the mounting of the cutting insert 2 can be reflected by a change in the second slot 15, namely: the second slot 15 is reduced and the cutting insert 2 is pressed; the second slot 15 becomes larger and the cutting insert 2 loosens; and the change of the second slit 15 can be observed outside the cutter body 1, so that an operator can judge the fitting condition of the upper positioning surface 11 and the top surface 23 of the cutting insert outside the cutter body 1, and the cutting insert 2 is more convenient and accurate to clamp.
As shown in fig. 8 and 9, in the present embodiment, the cutting insert 2 is provided with an insert top surface 23 and an insert bottom surface 21, the insert top surface 23 and the insert bottom surface 21 being parallel to each other, as viewed from the bottom view of the tool.
In the grooving tool according to the above embodiment of the present invention, the top surface and the bottom surface of the cutting insert 2 are parallel to each other, and the cutting insert 2 is a double-ended insert.
Wherein, the upper positioning surface 11 and the lower positioning surface 12 of the knife groove 10 are provided with bulges or depressions.
Wherein the insert top surface 23 and the insert bottom surface 21 are provided with protrusions or recesses.
In the grooving tool according to the above embodiment of the present invention, when the cutting insert 2 is mounted in the pocket 10 and pressed, the upper positioning surface 11 will be attached to the top surface of the insert; meanwhile, the upper and lower locating surfaces 11 and 12 of the pocket 10 are provided with protrusions or recesses in a direction substantially parallel to the axis of the compression screw 3, and the insert top and bottom surfaces 23 and 21 are provided with protrusions or recesses in a direction substantially parallel to the axis of the compression screw 3, which prevents the cutting insert 2 from being laterally displaced in the pocket 10, thereby making the clamping of the cutting insert 2 more stable.
In the bottom view of the tool, in the direction from the tool bit 1a to the clamping portion 1B, the first slit 14 is deeper than the second slit 15, the compression screw hole 16 penetrates through two sides of the first slit 14, a compression surface 17 is arranged at an opening at one end of the compression screw hole 16, and the compression surface 17 is used for matching with the compression screw 3 to drive the first elastic portion 10B to move.
Wherein, in a bottom view of the tool, the pressing surface 17 is arranged above the first slit 14 in a direction substantially parallel to the pressing screw 3.
In the grooving tool according to the above embodiment of the present invention, when the cutting insert 2 is mounted, the pressing screw 3 is rotated, and since the pressing surface 17 is provided above the first slit 14, the pressing screw 3 can be conveniently operated from above the tool, so that the mounting is more convenient; with the continuous rotation, the compression screw 3 drives the first elastic part 10B to displace and deform towards the first fixing part 10A through the compression surface 17, the second elastic part 10BB contacts the cutting insert 2 during the displacement, the upper positioning surface 11 completely adheres to the insert top surface 23 with the increase of the displacement distance, meanwhile, the second elastic part 10BB also deforms and touches the second fixing part 10BA to stop the displacement, at this time, the upper positioning surface 11 is completely attached to the top surface 23 of the blade, the lower locating surface 12 completely abuts the bottom surface 21 of the insert, the minimum clearance of the second slits 15 in the direction towards the cutting head is 0, thereby a stable mounting of the cutting insert 2 is achieved and the operator can judge the clamping of the cutting insert 2 by the minimum clearance of the second slot 15 in the direction of the cutting head.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (6)
1. A grooving tool, comprising: a cutter body, a cutting insert and a compression screw; the cutter body comprises a cutter head and a clamping part, the cutter head is provided with a cutter groove, the cutter groove extends from the cutter head to the clamping part, the cutter groove comprises an upper positioning surface, a lower positioning surface and an axial positioning surface, and the cutter groove is used for accommodating the cutting blade; the knife groove is provided with a first slit which divides the knife groove into a first fixing part and a first elastic part, the upper positioning surface is positioned on the first elastic part, and the lower positioning surface and the axial positioning surface are positioned on the first fixing part; the tool bit penetrates through the first elastic part and the first fixing part and is provided with a compression screw hole, and the compression screw is arranged in the compression screw hole; the tool bit is characterized in that a second slit is formed in the first elastic part, the second slit extends from the tool bit to the clamping part, and the second slit is opened in the direction towards the tool bit; the second slit divides the first elastic part into a second fixing part and a second elastic part; the part of the second slot in the direction towards the cutting head has a minimum clearance of 0 when the cutting insert is fully compressed upon complete mounting.
2. Grooving tool according to claim 1, wherein the upper locating surface is inclined relative to the lower locating surface in a bottom view of the tool at an angle a that converges in a direction towards the tool head and opens in a direction towards the clamping portion.
3. A grooving tool as claimed in claim 1 wherein the upper and lower locating surfaces of the pocket are provided with a projection or recess in a direction generally parallel to the compression screw axis.
4. A grooving tool as claimed in claim 3, wherein the cutting insert is provided with an insert top face and an insert bottom face, the insert top face and the insert bottom face being provided with a projection or a recess in a direction substantially parallel to the compression screw axis.
5. A grooving tool as claimed in claim 1 wherein the first sipe is located deeper than the second sipe in a direction from the insert to the clamping portion in a bottom view of the tool; the compression screw hole penetrates through two sides of the first slit, a compression surface is arranged at an opening at one end of the compression screw hole, and the compression surface is used for being matched with the compression screw to drive the first elastic part to move.
6. A grooving tool as claimed in claim 5 wherein the pressing face is disposed above the first sipe in a direction substantially parallel to the compression screw in a bottom view of the tool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011407331.9A CN112605411B (en) | 2020-12-03 | 2020-12-03 | Grooving tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011407331.9A CN112605411B (en) | 2020-12-03 | 2020-12-03 | Grooving tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112605411A CN112605411A (en) | 2021-04-06 |
| CN112605411B true CN112605411B (en) | 2021-12-10 |
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ID=75229270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011407331.9A Active CN112605411B (en) | 2020-12-03 | 2020-12-03 | Grooving tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112605411B (en) |
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| US5207537A (en) * | 1990-12-18 | 1993-05-04 | Sandvik Ab | Cutting tool |
| JPH08174312A (en) * | 1994-12-27 | 1996-07-09 | Mitsubishi Motors Corp | Mounting structure for cutting tool |
| JP2002337009A (en) * | 2001-04-24 | 2002-11-26 | Sandvik Ab | Cutting tool for cutting-off and grooving |
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| CN104551045A (en) * | 2014-12-29 | 2015-04-29 | 株洲钻石切削刀具股份有限公司 | Adjustable boring tool |
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| CN207787735U (en) * | 2017-11-20 | 2018-08-31 | 廊坊西波尔钻石技术有限公司 | Strength clip type lathe tool system |
| CN111644643A (en) * | 2020-06-19 | 2020-09-11 | 北京沃尔德金刚石工具股份有限公司 | PCD wheel hub sword of rough machining |
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2020
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| JP2002337009A (en) * | 2001-04-24 | 2002-11-26 | Sandvik Ab | Cutting tool for cutting-off and grooving |
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| CN112605411A (en) | 2021-04-06 |
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