CN113751778A - Rotary machining tool adopting split type tool bit - Google Patents
Rotary machining tool adopting split type tool bit Download PDFInfo
- Publication number
- CN113751778A CN113751778A CN202111136772.4A CN202111136772A CN113751778A CN 113751778 A CN113751778 A CN 113751778A CN 202111136772 A CN202111136772 A CN 202111136772A CN 113751778 A CN113751778 A CN 113751778A
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- China
- Prior art keywords
- cutter
- section
- cutter bar
- pressing
- cutter head
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/16—Milling-cutters characterised by physical features other than shape
- B23C5/20—Milling-cutters characterised by physical features other than shape with removable cutter bits or teeth or cutting inserts
- B23C5/22—Securing arrangements for bits or teeth or cutting inserts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
- B23B51/06—Drills with lubricating or cooling equipment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/16—Milling-cutters characterised by physical features other than shape
- B23C5/165—Milling-cutters characterised by physical features other than shape with chipbreaking or chipdividing equipment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/28—Features relating to lubricating or cooling
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Milling Processes (AREA)
Abstract
The invention relates to a cutter, and particularly discloses a rotary machining cutter adopting a split type cutter head. The rotary machining tool comprises a tool bar and at least one tool bit, wherein the tool bar and the tool bit are arranged in a split manner; one end surface of the cutter bar is provided with an installation groove, the installation groove extends to the side surface of the cutter bar, and the bottom surface of the installation groove is an axial reference surface; the cutter head is provided with an axial positioning surface and a front end surface, and the axial positioning surface is opposite to the front end surface; the front end surface is provided with a pressing groove and further comprises a pressing plate, and the pressing plate comprises a first section and a second section; in a connection state, the cutter head is arranged in the mounting groove, and the axial positioning surface is contacted with the axial reference surface; the first section of the pressing plate is detachably connected with the cutter bar, and the second section of the pressing plate extends into the pressing groove and presses the cutter head. The cutter bar and the cutter head in the rotary machining cutter are arranged in a split mode, the cutter head can be replaced independently, the use flexibility can be effectively improved, and the use cost is reduced.
Description
Technical Field
The invention relates to a cutter, in particular to a rotary machining cutter adopting a split type cutter head.
Background
Common rotary machining tools comprise a drill cutter, a milling cutter and the like, a cutting edge part of the conventional rotary machining tool is usually integrally formed or welded with a cutter bar part, machining is complex, once the cutting edge is worn, the tool needs to be integrally replaced, the service life is short, and the cost is high. Meanwhile, the cutting edge is not adjustable, the size specification of the cutter is fixed, the specifications of cutters required in different occasions are different, and the large-scale use of the integral cutter inevitably leads to a large number of cutters and high cost.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a rotary machining cutter adopting a split type cutter head, wherein a cutter bar and the cutter head are arranged in a split manner, and the cutter head can be independently replaced, so that the use flexibility can be effectively improved, and the use cost is reduced.
In order to solve the technical problems, the technical scheme provided by the invention is as follows: a rotary machining cutter adopting a split type cutter head comprises a cutter bar and at least one cutter head, wherein the cutter bar and the cutter head are arranged in a split manner; one end surface of the cutter bar is provided with an installation groove, the installation groove extends to the side surface of the cutter bar, and the bottom surface of the installation groove is an axial reference surface;
the cutter head is provided with an axial positioning surface and a front end surface, and the axial positioning surface is opposite to the front end surface; the front end face is provided with a pressing groove, and the bottom surface of the pressing groove is a pressure bearing surface;
the pressing plate comprises a first section and a second section, a pressing surface matched with the pressure bearing surface is arranged on the second section, and a protruding part is arranged on the pressing surface;
in a connection state, the cutter head is arranged in the mounting groove, and the axial positioning surface is contacted with the axial reference surface; the first section of the pressing plate is detachably connected with the cutter bar, the second section of the pressing plate extends into the pressing groove, and the pressing surface is in contact with the pressure bearing surface and presses the cutter head.
During connection, the tool bit is inserted into the mounting groove, is positioned through the axial positioning surface and the axial reference surface, is pressed through the pressing plate, is reliably connected with the tool bar and is convenient to disassemble and assemble. When the cutting edge of the cutter head is worn or the size and specification are required to be changed within a certain range, the cutter head can be replaced, the cutter handle is repeatedly used, the number of cutters is reduced, and the use cost of the cutters is reduced. Compared with a welding mode, the cutter is more flexible to use and longer in service life.
The pressing surface on set up the bellying, set up the depressed area that matches with the bellying on the pressure-bearing face that corresponds, under the connected state, bellying and depressed area cooperation, play the positioning action between clamp plate and tool bit, also can assist simultaneously and bear the moment of torsion, prevent that the tool bit from rotating for the cutter arbor, improve the stability of being connected between tool bit and the cutter arbor.
Preferably, part or all of the pressing surface is inclined in the direction of the next first segment.
Under the connection state, the pressing force of the second section on the bearing surface has a component towards the direction of the first section, so that the fitting effect between the circumferential positioning surface and the torque supporting surface can be ensured, and the connection reliability between the tool bit and the tool bar is improved.
Preferably, a chip groove is formed in the side surface of the cutter rod; a cooling channel is arranged in the cutter bar.
Preferably, the cutter bar is provided with at least two mounting grooves which are annularly and circumferentially distributed around the axis of the cutter bar. The distributed cutter head is mainly suitable for large-diameter cutters.
Preferably, the mounting groove radially penetrates through the cutter bar; a positioning assembly is arranged between the cutter bar and the cutter head and comprises a positioning pin and a positioning hole, one of the positioning pin and the positioning hole is arranged on the axial reference surface of the cutter bar, and the other one of the positioning pin and the positioning hole is arranged on the axial positioning surface of the cutter head; the positioning pin or the positioning hole is coaxial with the cutter bar.
Preferably, the cutter head is provided with a main cutting edge, and the pressing plate is lower than the main cutting edge of the corresponding cutter head along the circumferential direction of the cutter bar in a connection state.
Preferably, the cutting head is further provided with a secondary cutting edge, and the secondary cutting edge extends out of the mounting groove in the radial direction of the cutter rod in a connection state.
Preferably, the cutter bar is provided with a first threaded hole; the clamping device is characterized by further comprising a connecting rod, and the pressing plate is connected with the cutter bar through the connecting rod and the first threaded hole.
Preferably, the first segment of the pressure plate is provided with a second threaded hole, and the connecting rod comprises a first threaded section and a second threaded section; in the connection state, the first thread section is connected with the first threaded hole, and the second thread section is connected with the second threaded hole; the first thread segments and the second thread segments have opposite thread directions.
Because the rotating directions of the first thread section and the second thread section are opposite, when the connecting rod is rotated, the pressing plate and the cutter body move in the same direction or in the opposite direction relative to the connecting rod. When in connection, the connection efficiency can be improved; when the tool is disassembled, the pressing plate can be pushed away from the tool bar, so that the pressing plate can be conveniently taken down.
In addition, threads are arranged between the connecting rod and the pressing plate and between the connecting rod and the cutter bar, the connecting force is reliable and stable, and the anti-loosening effect is better.
Preferably, the axis of the first threaded hole is parallel to the axis of the holder or inclined outward.
Drawings
FIG. 1 is a schematic structural diagram of a rotary cutting tool with a split-type cutting head according to a first embodiment of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is a partial cross-sectional view of a first embodiment of a rotary cutting tool of the present invention utilizing a split-type tool tip;
FIG. 4 is an enlarged view of a portion of FIG. 3 at B;
fig. 5 is a partially enlarged view of a state in which the axis of the first threaded hole is inclined outward with respect to the axis of the holder;
FIG. 6 is a schematic diagram of the cooperation between the pressing plate and the connecting rod of the rotary cutting tool with the split type cutting head according to the first embodiment of the present invention;
FIG. 7 is a schematic structural diagram of a tool bit in a rotary cutting tool employing a split tool bit according to a first embodiment of the present invention;
FIG. 8 is a top view of a tool tip in a rotary cutting tool employing a split tool tip in accordance with a first embodiment of the present invention;
FIG. 9 is a top view of a tool bit in cooperation with a tool holder of a rotary cutting tool according to a first embodiment of the present invention employing a split-type tool bit;
fig. 10 is a top view of a tool bit in cooperation with a tool holder in a rotary cutting tool employing a split-type tool bit according to a second embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example one
As shown in fig. 1-4, a rotary machining tool using a split type tool bit 2 comprises a tool bar 1 and a tool bit 2, wherein the tool bar 1 and the tool bit 2 are arranged separately. The side of cutter arbor 1 has seted up chip groove 12, cutter arbor 1 in be equipped with cooling channel 14.
As shown in fig. 1-4, one end of the cutter bar 1 is a clamping end 13, the other end is a cutting end 11, the cutting end 11 is provided with an installation groove 15, the installation groove 15 extends to the side surface of the cutter bar 1, the bottom surface of the installation groove 15 is an axial reference surface, and the two side surfaces are torque support surfaces.
As shown in fig. 7, the cutting head 2 is provided with an axial positioning surface, a front end surface 25, two side end surfaces 26, and two circumferential positioning surfaces 22, wherein the axial positioning surface is disposed opposite to the front end surface 25, the two side end surfaces 26 are disposed opposite to each other, and the two circumferential positioning surfaces 22 are disposed opposite to each other. The front end face 25 is provided with a pressing groove 23, and the bottom surface of the pressing groove 23 is a pressure bearing surface.
As shown in fig. 4 and 8, the mounting groove 15 radially penetrates through the cutter bar 1, and correspondingly, the number of the cutter heads 2 is one. Under the connection state, the tool bit 2 arrange in the mounting groove 15, preceding terminal surface 25 stretch out the mounting groove 15 along the axial, axial positioning surface and axial reference surface contact, two side end face 26 radially stretch out the mounting groove 15 along the cutter arbor 1, circumference positioning surface 22 and the contact of the moment of torsion holding surface that corresponds.
As shown in fig. 7 to 9, the two circumferential positioning surfaces 22 are partially recessed to form rake surfaces 28, the rake surface 25 is a major relief surface, and the side end surfaces 26 are minor relief surfaces. The rake face 28 and the corresponding torque support face form a chip removal space communicated with the chip removal groove 12, and the chip removal space is centrosymmetric. The rake surfaces 28 intersect the major relief surfaces of the rake face 25 to form major cutting edges 24, and each of the rake surfaces 28 intersects one of the minor relief surfaces to form a minor cutting edge 27. Correspondingly, in the connected state, the pressure plate 3 is lower than the main cutting edge 24 of the corresponding cutting head 2 in the circumferential direction of the tool holder 1, and the secondary cutting edge 27 projects in the radial direction of the tool holder 1 out of the mounting groove 15.
As shown in fig. 8 and 9, the pressing groove 23 is offset from the main cutting edge 24, and the pressing groove 23 extends away from the corresponding main cutting edge 24 so as not to interfere with cutting. Each of the major cutting edges 24 corresponds to at least one pressing groove 23. In a preferred form, each of the main cutting edges 24 corresponds to one pressing groove 23, and the two pressing grooves 23 are distributed in a central symmetry manner.
As shown in fig. 4 and 6, the pressure plate 3 further comprises a first section 31 and a second section 32, and the second section 32 is provided with a pressing surface 33 matching with the pressure-bearing surface. In the connection state, the first segment 31 of the pressing plate 3 is detachably connected with the cutter bar 1, the second segment 32 extends into the pressing groove 23, and the pressing surface 33 is in contact with the pressure-bearing surface and presses the cutter head 2.
During connection, the tool bit 2 is inserted into the mounting groove 15, is positioned through the axial positioning surface and the axial reference surface, is pressed tightly through the pressing plate 3, is reliably connected with the tool bar 1, and is convenient to disassemble and assemble. When the cutting edge of the tool bit 2 is worn or the size needs to be changed within a certain range, the tool bit 2 can be changed, the tool holder can be repeatedly used, the number of tools is reduced, and the use cost of the tools is reduced. Compared with a welding mode, the cutter is more flexible to use and longer in service life.
Specifically, as shown in fig. 4 and 6, the first segment 31 is provided with a plug portion, and the plug portion is arranged in the same direction as the pressing surface 33. The cutting end 11 of the corresponding tool bit 2 is provided with a socket hole, and when the tool bit is connected, the inserting part is inserted into the socket hole to play a role of pre-positioning and facilitate installation. Meanwhile, the cutting end 11 can also be provided with an accommodating groove 18 matched with the first section 31, and the first section 31 is partially or completely inserted into the accommodating groove 18, so that the interference of the first section 31 on cutting can be reduced in the cutting process, and the abrasion of the first section 31 can be reduced.
As shown in fig. 4 and 6, the pressing surface 33 is provided with a protruding portion, a concave portion matched with the protruding portion is arranged on the corresponding pressing surface, and in the connection state, the protruding portion and the concave portion are matched to play a role in positioning between the pressing plate 3 and the tool bit 2 and also assist in bearing torque, so that the tool bit 2 is prevented from rotating relative to the tool bar 1, and the connection stability between the tool bit 2 and the tool bar 1 is improved.
As shown in fig. 4 and 6, the protruding portion may be in the form of a convex point or a convex column, and is matched with the concave area on the pressure bearing surface, so as to achieve the effect of positioning the tool bit 2 and the tool bar 1 with respect to each other. In the drawings of the present embodiment, the pressing surface 33 is partially or entirely formed as a protrusion inclined downward toward the first segment 31, and correspondingly, the pressing surface is also an inclined surface. In the connection state, the pressing force of the second section 32 on the bearing surface has a component towards the direction of the first section 31, so that the fitting effect between the circumferential positioning surface 22 and the torque supporting surface can be ensured, and the connection reliability between the tool bit 2 and the tool bar 1 is improved. The above effect can also be achieved by providing a bevel at the end of the stud.
Further, as shown in fig. 4, a positioning assembly is further disposed between the tool holder 1 and the tool bit 2, the positioning assembly includes a positioning pin 21 and a positioning hole 16, one of the positioning pin 21 and the positioning hole 16 is disposed on an axial reference surface of the tool holder 1, and the other is disposed on an axial positioning surface of the tool bit 2. The positioning pin 21 or the positioning hole 16 is coaxially arranged with the cutter bar 1.
Furthermore, as shown in fig. 4 and 6, the cutter bar 1 is provided with a first threaded hole 17, and the first section 31 of the pressing plate 3 is provided with a second threaded hole 34. The connecting rod 4 is further included, and the connecting rod 4 comprises a first threaded section 42 and a second threaded section 41. In the connection state, the first threaded section 42 is connected with the first threaded hole 17, and the second threaded section 41 is connected with the second threaded hole 34; the first thread segments 42 are oppositely threaded to the second thread segments 41. The first threaded bore 17 is preferably arranged coaxially with the socket bore.
Due to the opposite rotation direction of the first threaded section 42 and the second threaded section 41, when the connecting rod 4 is rotated, the pressing plate 3 and the cutter body move in the same direction or in the opposite direction relative to the connecting rod 4. When in connection, the connection efficiency can be improved; when the tool is disassembled, the pressing plate 3 can be pushed away from the tool bar 1, so that the pressing plate 3 can be conveniently taken down. In addition, all be equipped with the screw thread between connecting rod 4 and clamp plate 3 and the cutter arbor 1, the joining force is reliable stable, and locking effect is also better.
As shown in fig. 5 and 6, the axis of the first threaded hole 17 may be parallel to the axis of the arbor 1, or may be inclined outward with respect to the axis of the arbor 1. In which fig. 4 shows that the axis of the first threaded hole 17 is arranged parallel to the axis of the tool shank 1; fig. 5 shows that the axis of the first threaded bore 17 is arranged obliquely to the outside with respect to the axis of the shank 1, i.e. at the angle α shown in fig. 5.
Example two
As shown in fig. 10, the present embodiment is different from the first embodiment in that: the terminal surface of cutter arbor 1 is equipped with two at least mounting grooves 15, mounting groove 15 around the annular circumference distribution of cutter arbor axle center. Distributed tool bit 2 mainly is applicable to the major diameter cutter, and the major diameter cutter chooses for use distributed tool bit 2 can reduce tool bit 2's the processing degree of difficulty, can carry out partial tool bit 2 simultaneously and change, reduces use cost.
In conclusion, the above description is only for the preferred embodiment of the present invention and should not be construed as limiting the present invention, and any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides an adopt rotatory processing cutter of split type tool bit which characterized in that: the cutter comprises a cutter bar and at least one cutter head, wherein the cutter bar and the cutter head are arranged in a split manner; one end surface of the cutter bar is provided with an installation groove, the installation groove extends to the side surface of the cutter bar, and the bottom surface of the installation groove is an axial reference surface;
the cutter head is provided with an axial positioning surface and a front end surface, and the axial positioning surface is opposite to the front end surface; the front end face is provided with a pressing groove, and the bottom surface of the pressing groove is a pressure bearing surface;
the pressing plate comprises a first section and a second section, a pressing surface matched with the pressure bearing surface is arranged on the second section, and a protruding part is arranged on the pressing surface;
in a connection state, the cutter head is arranged in the mounting groove, and the axial positioning surface is contacted with the axial reference surface; the first section of the pressing plate is detachably connected with the cutter bar, the second section of the pressing plate extends into the pressing groove, and the pressing surface is in contact with the pressure bearing surface and presses the cutter head.
2. The rotary machine tool of claim 1, wherein: and part or all of the next first subsection of the pressing surface is inclined.
3. The rotary machine tool of claim 1, wherein: a chip groove is formed in the side surface of the cutter rod; a cooling channel is arranged in the cutter bar.
4. The rotary machine tool of claim 1, wherein: the cutter bar is provided with at least two mounting grooves which are distributed circumferentially around the axis of the cutter bar in an annular manner.
5. The rotary machine tool of claim 1, wherein: the mounting groove radially penetrates through the cutter bar;
a positioning assembly is arranged between the cutter bar and the cutter head and comprises a positioning pin and a positioning hole, one of the positioning pin and the positioning hole is arranged on the axial reference surface of the cutter bar, and the other one of the positioning pin and the positioning hole is arranged on the axial positioning surface of the cutter head;
the positioning pin or the positioning hole is coaxial with the cutter bar.
6. The rotary machine tool of claim 1, wherein: the cutter head on be equipped with the main cutting edge, under the connected state, along cutter arbor circumference, the clamp plate is less than the main cutting edge of corresponding cutter head.
7. The rotary machine tool of claim 1, wherein: the cutter head is also provided with an auxiliary cutting edge, and the auxiliary cutting edge extends out of the mounting groove in the radial direction of the cutter bar in a connecting state.
8. The rotary machining tool of any one of claims 1-7, wherein: the cutter bar is provided with a first threaded hole; the clamping device is characterized by further comprising a connecting rod, and the pressing plate is connected with the cutter bar through the connecting rod and the first threaded hole.
9. The rotary machine tool of claim 8, wherein: the first segment of the pressure plate is provided with a second threaded hole, and the connecting rod comprises a first threaded section and a second threaded section; in the connection state, the first thread section is connected with the first threaded hole, and the second thread section is connected with the second threaded hole; the first thread segments and the second thread segments have opposite thread directions.
10. The rotary machine tool of claim 8, wherein: the axis of the first threaded hole is parallel to the axis of the cutter rod or inclines outwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111136772.4A CN113751778B (en) | 2021-09-27 | 2021-09-27 | Rotary machining tool adopting split type tool bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111136772.4A CN113751778B (en) | 2021-09-27 | 2021-09-27 | Rotary machining tool adopting split type tool bit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113751778A true CN113751778A (en) | 2021-12-07 |
| CN113751778B CN113751778B (en) | 2022-12-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111136772.4A Active CN113751778B (en) | 2021-09-27 | 2021-09-27 | Rotary machining tool adopting split type tool bit |
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| Country | Link |
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| CN (1) | CN113751778B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114453606A (en) * | 2021-12-13 | 2022-05-10 | 浙江欣兴工具股份有限公司 | Tool bit and split type spot facing work cutter |
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| CN209272500U (en) * | 2018-11-28 | 2019-08-20 | 青岛毅凯重型锻造有限公司 | A kind of cutter being convenient for changing blade |
| CN111054951A (en) * | 2019-12-06 | 2020-04-24 | 株洲钻石切削刀具股份有限公司 | Split type rotary machining cutter |
| CN211386957U (en) * | 2019-12-18 | 2020-09-01 | 耐世特凌云驱动系统(涿州)有限公司 | Compound tool for outer ring machining |
| CN211758726U (en) * | 2020-02-25 | 2020-10-27 | 侯雅旻 | Connecting structure of drill bit and drill cutter body |
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2021
- 2021-09-27 CN CN202111136772.4A patent/CN113751778B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1149271A (en) * | 1994-05-27 | 1997-05-07 | 桑德维克公司 | Tool holder with a clamp for apertured inserts |
| KR200237150Y1 (en) * | 2001-03-22 | 2001-10-08 | 이정수 | Endmill attachment to drilling |
| WO2005102573A1 (en) * | 2004-04-23 | 2005-11-03 | Yestool Co., Ltd. | Insert drill |
| CN101081440A (en) * | 2007-06-27 | 2007-12-05 | 宁波柏德数控科技有限公司 | Form cutter based on random molding curve |
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| KR101265982B1 (en) * | 2012-11-02 | 2013-05-22 | 오중세 | Bite assembly for inner and outer race cutting of ball bearing |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114453606A (en) * | 2021-12-13 | 2022-05-10 | 浙江欣兴工具股份有限公司 | Tool bit and split type spot facing work cutter |
| CN114453606B (en) * | 2021-12-13 | 2023-12-29 | 浙江欣兴工具股份有限公司 | Tool bit and split type hole machining cutter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113751778B (en) | 2022-12-06 |
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Address after: 314301 No. 699, Yanshan Road, liuliji Town, Shupu Town, Haiyan County, Jiaxing City, Zhejiang Province Applicant after: Zhejiang Xinxing Tools Co.,Ltd. Address before: No. 33, Huanbei Road, liuliji Town, Shupu Town, Haiyan County, Jiaxing City, Zhejiang Province Applicant before: ZHEJIANG XINXING TOOLS Co.,Ltd. |
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