CN104588739A - Rotary machining tool - Google Patents
Rotary machining tool Download PDFInfo
- Publication number
- CN104588739A CN104588739A CN201410841965.3A CN201410841965A CN104588739A CN 104588739 A CN104588739 A CN 104588739A CN 201410841965 A CN201410841965 A CN 201410841965A CN 104588739 A CN104588739 A CN 104588739A
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- Prior art keywords
- face
- machining tool
- rotary machining
- cutting
- sloped position
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Milling Processes (AREA)
Abstract
The invention discloses a rotary machining tool. The rotary machining tool comprises a clamping component and a cutting component, wherein the clamping component comprises a handle part and an elastic clamping part; the cutting part is arranged on the elastic clamping part; the cutting part comprises a cutting head part and a connection part; at least two cutting edges and at least two inclined positioning faces are arranged at the cutting head part; the inclined positioning faces are inclined towards the axis of the rotary machining tool along a cutting feeding direction of the rotary machining tool; an axial positioning face is formed by a transition face between the cutting head part and the connection part; a dovetail groove is formed in the elastic clamping part, and comprises a torque action face for supporting the inclined positioning faces and an axial action face for supporting the axial positioning face; an installation groove is formed in the bottom face of the dovetail groove; the connection part is arranged inside the installation groove. The rotary machining tool provided by the invention has the advantages of simple structure, stability in connection and good anti-impact property.
Description
Technical field
The present invention relates to metal cutting process field, particularly relate to a kind of rotary machining tool.
Background technology
In drilling processing, in order to extend the service life of blades of cutting tools, the carbide alloy that usual employing is comparatively valuable or similar material are as cutter material, due to this type of material, to have hardness high, the feature that wearability is good, processing is difficulty very, this makes drilling cutters material cost and processing cost all higher, drilling cutters conventional is at present all generally assembled by cutting part and hold assembly, wherein cutting part is large by hardness, the carbide alloy that anti-wear performance is strong or similar material are made, hold assembly is then made up of the material that elasticity is larger, cutting part can be changed separately after cutting part is worn, thus reduction material and processing cost.
Publication number is that the Chinese patent literature of CN1585682A discloses a kind of drilling machining cutter, comprise sheath body and cutting part two parts, they have a dovetail shape structure respectively, this two-part swallowtail-shaped structure can cooperatively interact, deformation is produced by the elastic protrusion skew of sheath body, clamping is formed to cutting part, by perpendicular to the basal plane of axis and the cooperation in dovetail shape face, makes the stable connection of two parts.This instrument carrys out transmitting torque by the connecting piece acting surface in a slit of sheath body and elastic protrusion is offset, following problem is there is: one in actual cut process, because the radial area of elastic protrusion is larger, when causing handling cutting tip, extracting tool is stressed larger, and extracting tool lifting surface area is less, extracting tool and sheath body is as easy as rolling off a log occurs impression and damage, thus reduce the service life of instrument, and when loading and unloading cutting part, the subtended angle that elastic protrusion can reach is too small, cutting part is along the dovetail tongue-and-groove slippage of sheath body, therebetween unavoidably rub, and sheath body generally adopts the relatively poor material of anti-wear performance to make, after handling several times, often make the dovetail tongue-and-groove serious wear in sheath body, sheath body cannot form reliable support to cutting part in the absence of external forces, sheath body is caused to lose efficacy, two, sheath body and cutting part are by the swallowtail-shaped structure location be parallel to each other, and when cutting part is subject to the power parallel with swallowtail-shaped structure, easily cause cutting part to come off, three, by the circular groove at swallowtail-shaped structure center, cutting part and sheath body are felt relieved, this circular groove diameter is by the restriction of swallowtail-shaped structure, can only reach at most equal with the width bottom swallowtail-shaped structure, therefore this circular groove centering effect that can reach is limited.
Summary of the invention
The technical problem to be solved in the present invention overcomes the deficiencies in the prior art, provides that a kind of structure is simple, stable connection and the good rotary machining tool of shock resistance.
For solving the problems of the technologies described above, the present invention by the following technical solutions:
A kind of rotary machining tool, comprise hold assembly and cutting part, described hold assembly comprises shank and resilient clamp portion, described cutting part is installed in described resilient clamp portion, described cutting part comprises cutting head and connecting portion, described cutting head is provided with at least two cutting edges and at least two sloped position faces, described sloped position face tilts along the cutting direction of feed of described rotary machining tool to the axis of described rotary machining tool, the transition face of described cutting head and connecting portion forms axial locating surface, described resilient clamp portion is provided with dovetail groove, described dovetail groove comprises the torsional interaction face for supporting described sloped position face and the axial action face for supporting described axial locating surface, the bottom surface of described dovetail groove offers mounting groove, described connecting portion is installed in described mounting groove.
Further improvement as technique scheme:
Described sloped position face and axial locating surface are plane.
Described cutting head comprises two sloped position faces, and two described sloped position faces are symmetrical about the axis centre of described rotary machining tool, and described torsional interaction face is corresponding with two described sloped position faces to be arranged.
Described connecting portion comprises at least one external cylindrical surface and at least one axial empty avoiding face, is provided with cylinder empty avoiding face and can forms the inner cylinder face of interference fit with described external cylindrical surface in described mounting groove.
Described cutting head is provided with the radial empty avoiding face corresponding with described sloped position face, is provided with the location empty avoiding face corresponding with described sloped position face in described dovetail groove.
The axial angle in two described torsional interaction faces is α, and the axial angle in two described sloped position faces is β, and 5 °≤α≤60 °, 5 °≤β≤60 °, 0 °≤alpha-beta≤3 °.
Compared with prior art, the invention has the advantages that:
(1) rotary machining tool of the present invention, cooperatively interacted by the axial action face of the axial locating surface on cutting part and dovetail groove and realize the axial location of cutting part on hold assembly, transmit circumferential moment of torsion by the cooperation in torsional interaction face and sloped position face simultaneously and namely realize the circumference location of cutting part on hold assembly, and tilt along the cutting direction of feed of rotary machining tool to the axis of rotary machining tool because of sloped position face, during machining, the circumferential active force that cutting part is subject to is larger, cooperation between torsional interaction face and sloped position face is tightr, namely the circumferential cutting force that bears of cutting part is larger, the connection of cutting part and hold assembly is more fastening, stable, cutting part is made to have good shock resistance, the present invention just can realize cutting part location reliable and stable on hold assembly by simple structure, and improve the shock resistance of rotary machining tool.
(2) rotary machining tool of the present invention, connecting portion comprises at least one external cylindrical surface and at least one axial empty avoiding face, be provided with cylinder empty avoiding face in mounting groove and the inner cylinder face of interference fit can be formed with external cylindrical surface, when cutting part is installed, first that external cylindrical surface is corresponding with cylinder empty avoiding face, axial empty avoiding face is corresponding with inner cylinder face, and vertically the connecting portion of cutting part is inserted in mounting groove, then an axial force applied to cutting part and cut the contrary circumferential active force of rotation direction with rotary machining tool, external cylindrical surface and inner cylinder face is made to form interference fit, ensure cutting part and hold assembly coaxial, ensure assembly precision, instrument is used to apply the active force contrary with when installing to cutting part during dismounting, dismounting is all very convenient.
Accompanying drawing explanation
Fig. 1 is the three-dimensional structure diagram of rotary machining tool of the present invention.
Fig. 2 is the sectional perspective structure chart of the hold assembly of rotary machining tool of the present invention.
Fig. 3 is the front view of the hold assembly of rotary machining tool of the present invention.
Fig. 4 is the three-dimensional structure diagram of the cutting part of rotary machining tool of the present invention.
Fig. 5 is the front view of the cutting part of rotary machining tool of the present invention.
Fig. 6 is the side view of the cutting part of rotary machining tool of the present invention.
Fig. 7 be the hold assembly of rotary machining tool of the present invention and cutting part unassembled time schematic diagram.
Fig. 8 is the schematic diagram in the hold assembly of rotary machining tool of the present invention and cutting part assembling process.
Fig. 9 is the schematic diagram that the hold assembly of rotary machining tool of the present invention and cutting part have assembled.
In figure, each label represents:
1, hold assembly; 11, shank; 12, resilient clamp portion; 13, dovetail groove; 131, torsional interaction face; 132, axial action face; 133, empty avoiding face is located; 14, mounting groove; 141, inner cylinder face; 142, cylinder empty avoiding face; 2, cutting part; 21, cutting head; 211, cutting edge; 212, sloped position face; 213, radial empty avoiding face; 22, connecting portion; 221, external cylindrical surface; 222, axial empty avoiding face; 23, axial locating surface.
Detailed description of the invention
Below with reference to Figure of description and specific embodiment, the present invention is described in further details.
Fig. 1 to 9 shows a kind of embodiment of rotary machining tool of the present invention, comprise hold assembly 1 and cutting part 2, hold assembly 1 comprises shank 11 and resilient clamp portion 12, cutting part 2 is installed in resilient clamp portion 12, cutting part 2 comprises cutting head 21 and connecting portion 22, cutting head 21 is provided with at least two cutting edges 211 and at least two sloped position faces 212, sloped position face 212 tilts along the cutting direction of feed of rotary machining tool to the axis of rotary machining tool, cutting head 21 forms axial locating surface 23 with the transition face of connecting portion 22, resilient clamp portion 12 is provided with dovetail groove 13, dovetail groove 13 comprises the torsional interaction face 131 for supporting sloped position face 212 and the axial action face 132 for supporting axial locating surface 23, the bottom surface of dovetail groove 13 offers mounting groove 14, connecting portion 22 is installed in mounting groove 14, to be cooperatively interacted with the axial action face 132 of dovetail groove 13 by axial locating surface on cutting part 2 23 and realize the axial location of cutting part 2 on hold assembly 1, transmit circumferential moment of torsion by the cooperation in torsional interaction face 131 and sloped position face 212 simultaneously and namely realize the circumference location of cutting part 2 on hold assembly 1, and tilt along the cutting direction of feed of rotary machining tool to the axis of rotary machining tool because of sloped position face 212, during machining, the circumferential active force that cutting part 2 is subject to is larger, cooperation between torsional interaction face 131 and sloped position face 212 is tightr, namely the circumferential cutting force that bears of cutting part 2 is larger, the connection of cutting part 2 and hold assembly 1 is more fastening, stable, cutting part 2 is made to have good shock resistance.
In the present embodiment, sloped position face 212 and axial locating surface 23 are plane, and the torsional interaction face 131 of dovetail groove 13 and axial action face 132 all may correspond to and be set to plane, are convenient to the processing of cutting part 2 and dovetail groove 13.
In the present embodiment, it is symmetrical about the axis centre of rotary machining tool that cutting head 21 comprises sloped position face 212,212, two, two sloped position faces, and torsional interaction face 131 is corresponding with two sloped position faces 212 to be arranged.Except the mode in the present embodiment, sloped position face 212 can also be set to more than three, and three sloped position faces 212 are uniformly distributed along the face of cylinder, cutting head 21 place.
In the present embodiment, connecting portion 22 comprises at least one external cylindrical surface 221 and at least one axial empty avoiding face 222, be provided with cylinder empty avoiding face 142 in mounting groove 14 and the inner cylinder face 141 of interference fit can be formed with external cylindrical surface 221, as shown in Figure 7 to 9, when cutting part 2 is installed, first that external cylindrical surface 221 is corresponding with cylinder empty avoiding face 142, axial empty avoiding face 222 is corresponding with inner cylinder face 141, and vertically the connecting portion 22 of cutting part 2 is inserted in mounting groove 14, then an axial force applied to cutting part 2 and cut the contrary circumferential active force of rotation direction with rotary machining tool, external cylindrical surface 221 and inner cylinder face 141 is made to form interference fit, now, sloped position face 212 and torsional interaction face 131 also should be in and contact mated condition, external cylindrical surface 221 and the interference fit of inner cylinder face 141 not only ensure cutting part 2 and hold assembly 1 coaxial, ensure assembly precision, and can effectively prevent cutting part 2 from occurring to loosen.Use instrument to apply the active force contrary with when installing to cutting part 2 during dismounting, dismounting is all very convenient.In assembling process, when external cylindrical surface 221 and inner cylinder face 141 start to form interference fit, operating personnel can know that installation is near completion, and in unloading process, when external cylindrical surface 221 is separated completely with inner cylinder face 141, operating personnel can know that dismounting is near completion.
In the present embodiment, cutting head 21 is provided with the radial empty avoiding face 213 corresponding with sloped position face 212, is provided with the location empty avoiding face 133 corresponding with sloped position face 212 in dovetail groove 13.
The angle in two torsional interaction faces 131 is α, the angle in two sloped position faces 212 is β, in order to make the handling of cutting part 2 all convenient laborsaving, and ensure that sloped position face 212 can fully contact with torsional interaction face 131 and coordinate and transmit circumferential moment of torsion, need meet: 5 °≤α≤60 °, 5 °≤β≤60 °, 0 °≤alpha-beta≤3 °, in the present embodiment, α equals 30 °, and β equals 30 °.
Although the present invention discloses as above with preferred embodiment, but and be not used to limit the present invention.Any those of ordinary skill in the art, when not departing from technical solution of the present invention scope, can utilize the technology contents of above-mentioned announcement to make many possible variations and modification to technical solution of the present invention, or being revised as the Equivalent embodiments of equivalent variations.Therefore, every content not departing from technical solution of the present invention, according to the technology of the present invention essence to any simple modification made for any of the above embodiments, equivalent variations and modification, all should drop in the scope of technical solution of the present invention protection.
Claims (6)
1. a rotary machining tool, comprise hold assembly (1) and cutting part (2), described hold assembly (1) comprises shank (11) and resilient clamp portion (12), described cutting part (2) is installed on described resilient clamp portion (12), described cutting part (2) comprises cutting head (21) and connecting portion (22), it is characterized in that: described cutting head (21) is provided with at least two cutting edges (211) and at least two sloped position faces (212), described sloped position face (212) is tilted along the cutting direction of feed of described rotary machining tool to the axis of described rotary machining tool, described cutting head (21) forms axial locating surface (23) with the transition face of connecting portion (22), described resilient clamp portion (12) is provided with dovetail groove (13), described dovetail groove (13) comprises the torsional interaction face (131) for supporting described sloped position face (212) and the axial action face (132) for supporting described axial locating surface (23), the bottom surface of described dovetail groove (13) offers mounting groove (14), described connecting portion (22) is installed in described mounting groove (14).
2. rotary machining tool according to claim 1, is characterized in that: described sloped position face (212) and axial locating surface (23) are plane.
3. rotary machining tool according to claim 1, it is characterized in that: described cutting head (21) comprises two sloped position faces (212), two described sloped position faces (212) are symmetrical about the axis centre of described rotary machining tool, and described torsional interaction face (131) is corresponding with two described sloped position faces (212) to be arranged.
4. rotary machining tool according to claim 1, it is characterized in that: described connecting portion (22) comprises at least one external cylindrical surface (221) and at least one axial empty avoiding face (222), be provided with cylinder empty avoiding face (142) in described mounting groove (14) and the inner cylinder face (141) of interference fit can be formed with described external cylindrical surface (221).
5. rotary machining tool according to claim 4, it is characterized in that: described cutting head (21) is provided with the radial empty avoiding face (213) corresponding with described sloped position face (212), in described dovetail groove (13), be provided with the location empty avoiding face (133) corresponding with described sloped position face (212).
6. rotary machining tool according to claim 3, it is characterized in that: the axial angle of two described torsional interaction faces (131) is α, the axial angle of two described sloped position faces (212) is β, and 5 °≤α≤60 °, 5 °≤β≤60 °, 0 °≤alpha-beta≤3 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410841965.3A CN104588739B (en) | 2014-12-30 | 2014-12-30 | Rotary machining tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410841965.3A CN104588739B (en) | 2014-12-30 | 2014-12-30 | Rotary machining tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104588739A true CN104588739A (en) | 2015-05-06 |
| CN104588739B CN104588739B (en) | 2017-02-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410841965.3A Active CN104588739B (en) | 2014-12-30 | 2014-12-30 | Rotary machining tool |
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| Country | Link |
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| CN (1) | CN104588739B (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105537654A (en) * | 2015-12-30 | 2016-05-04 | 株洲钻石切削刀具股份有限公司 | Drilling tool |
| USD798922S1 (en) | 2015-10-07 | 2017-10-03 | Kennametal Inc. | Cutting head for rotary drill |
| USD798921S1 (en) | 2015-10-07 | 2017-10-03 | Kennametal Inc. | Cutting head for modular drill |
| US9937567B2 (en) | 2015-10-07 | 2018-04-10 | Kennametal Inc. | Modular drill |
| US10052698B2 (en) | 2013-10-15 | 2018-08-21 | Kennametal Inc. | Modular carrier tool and tool head |
| US10058930B2 (en) | 2013-04-03 | 2018-08-28 | Kennametal Inc. | Tool head for rotary cutting tool and rotary cutting tool including same |
| US10071430B2 (en) | 2015-10-07 | 2018-09-11 | Kennametal Inc. | Cutting head, rotary tool and support for the rotary tool and for the accommodation of the cutting head |
| US10537943B2 (en) | 2017-03-27 | 2020-01-21 | Kennametal Inc | Modular rotary tool and modular tool system |
| US10799958B2 (en) | 2017-08-21 | 2020-10-13 | Kennametal Inc. | Modular rotary cutting tool |
| CN112658340A (en) * | 2020-12-17 | 2021-04-16 | 乐清大勇新工具有限公司 | Drill bit and machining process thereof |
| US11565356B2 (en) | 2017-07-13 | 2023-01-31 | Kennametal Inc. | Method for producing a cutting head |
| US11911830B2 (en) | 2019-06-13 | 2024-02-27 | Kennametal India Ltd. | Indexable drilling inserts |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1200222B1 (en) * | 1999-08-03 | 2003-04-02 | Kennametal Inc. | Drill bit having a replaceable cutting head |
| CN1630569A (en) * | 2002-02-21 | 2005-06-22 | 肯纳梅泰尔公司 | Rotary cutting tool, such as a drill, comprising an exchangeable cutting insert, and an exchangeable cutting insert |
| US20090116920A1 (en) * | 2007-11-05 | 2009-05-07 | Taegutec Ltd. | Rotary Cutting Tool |
| CN101605622A (en) * | 2007-02-12 | 2009-12-16 | 伊斯卡有限公司 | Has the instrument of the self-clamp type cutting head of assembling releasedly |
| CN102159351A (en) * | 2009-12-08 | 2011-08-17 | Osg株式会社 | Throw-away rotary tool |
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2014
- 2014-12-30 CN CN201410841965.3A patent/CN104588739B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1200222B1 (en) * | 1999-08-03 | 2003-04-02 | Kennametal Inc. | Drill bit having a replaceable cutting head |
| CN1630569A (en) * | 2002-02-21 | 2005-06-22 | 肯纳梅泰尔公司 | Rotary cutting tool, such as a drill, comprising an exchangeable cutting insert, and an exchangeable cutting insert |
| CN101605622A (en) * | 2007-02-12 | 2009-12-16 | 伊斯卡有限公司 | Has the instrument of the self-clamp type cutting head of assembling releasedly |
| US20090116920A1 (en) * | 2007-11-05 | 2009-05-07 | Taegutec Ltd. | Rotary Cutting Tool |
| CN102159351A (en) * | 2009-12-08 | 2011-08-17 | Osg株式会社 | Throw-away rotary tool |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10058930B2 (en) | 2013-04-03 | 2018-08-28 | Kennametal Inc. | Tool head for rotary cutting tool and rotary cutting tool including same |
| US10052698B2 (en) | 2013-10-15 | 2018-08-21 | Kennametal Inc. | Modular carrier tool and tool head |
| USD798922S1 (en) | 2015-10-07 | 2017-10-03 | Kennametal Inc. | Cutting head for rotary drill |
| USD798921S1 (en) | 2015-10-07 | 2017-10-03 | Kennametal Inc. | Cutting head for modular drill |
| US9937567B2 (en) | 2015-10-07 | 2018-04-10 | Kennametal Inc. | Modular drill |
| US10071430B2 (en) | 2015-10-07 | 2018-09-11 | Kennametal Inc. | Cutting head, rotary tool and support for the rotary tool and for the accommodation of the cutting head |
| CN105537654A (en) * | 2015-12-30 | 2016-05-04 | 株洲钻石切削刀具股份有限公司 | Drilling tool |
| US10537943B2 (en) | 2017-03-27 | 2020-01-21 | Kennametal Inc | Modular rotary tool and modular tool system |
| US11565356B2 (en) | 2017-07-13 | 2023-01-31 | Kennametal Inc. | Method for producing a cutting head |
| US10799958B2 (en) | 2017-08-21 | 2020-10-13 | Kennametal Inc. | Modular rotary cutting tool |
| US11911830B2 (en) | 2019-06-13 | 2024-02-27 | Kennametal India Ltd. | Indexable drilling inserts |
| CN112658340A (en) * | 2020-12-17 | 2021-04-16 | 乐清大勇新工具有限公司 | Drill bit and machining process thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104588739B (en) | 2017-02-22 |
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