CN203316794U - Drilling cutter - Google Patents
Drilling cutter Download PDFInfo
- Publication number
- CN203316794U CN203316794U CN2013203801905U CN201320380190U CN203316794U CN 203316794 U CN203316794 U CN 203316794U CN 2013203801905 U CN2013203801905 U CN 2013203801905U CN 201320380190 U CN201320380190 U CN 201320380190U CN 203316794 U CN203316794 U CN 203316794U
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- China
- Prior art keywords
- drilling tool
- end part
- cutting tip
- cutting
- shank
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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.)
- Expired - Lifetime
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Abstract
The utility model discloses a drilling cutter which comprises a cutter body, a cutting blade and a fastening component, wherein the cutter body is formed by a shank part, a cutting end part and a peripheral surface which is positioned between the shank part and the cutting end part; a cutter groove is formed in the cutting end part; the cutting blade is fixed in the cutter groove through the fastening component; a scrap containing groove communicated with the cutter groove is formed in the peripheral surface; an inner cold hole passing from the shank part to the cutting end part is formed in the cutter body; a plurality of cavities are formed in the peripheral surface; communicating holes communicated with the inner cold hole are formed in the cavities. The drilling cutter has the advantages that the structure is simple; the vibration is inhibited effectively; the harmful effect of suspension elongation on the hole processing quality is eliminated.
Description
Technical field
The utility model relates to a kind of drilling tool, relate in particular to that a kind of draw ratio is large, anti-vibration, high accuracy processing, drilling tool.
Background technology
During the drilling tool cutting, be mainly that cutting end part bears cutting force, and smear metal can only be discharged through chip pocket from cutting end part, the shank that when cutting end part is stressed, cutting end part clamps produces amount of deflection, for smear metal, can from chip pocket, discharge fast simultaneously, thereby the ratio that chip pocket generally has between the diameter of the thick and drilling tool of the core of larger chip space drilling tool is less, the amount of deflection changed easily makes cutting end part follow the side face vibration-generating that intensity is low, cutting end part is poorer to the overhang rigidity of long drilled holes cutter more of shank, thereby the long drilling tool that overhangs adds and is more prone to vibration-generating and more violent man-hour, during cutting, vibration-generating causes the drilling tool fracture, machined surface quality is poor, dimensional accuracy is low, it is very fast that vibrational energy makes the cutting tip wearing and tearing simultaneously, reduce the life-span of cutting tip, in order to guarantee the service life of blade, avoid the drilling tool fracture to cause workpiece to scrap, drilling tool generally can only be little for processing aperture ratio, the use occasion that machined surface quality is not high.
The utility model content
The technical problems to be solved in the utility model is to overcome the deficiencies in the prior art, provide a kind of simple in structure, can effectively suppress vibration, eliminate overhang long to the dysgenic drilling tool of hole crudy.
For solving the problems of the technologies described above, the utility model by the following technical solutions:
A kind of drilling tool, comprise cutter hub and cutting tip, described cutter hub consists of shank, cutting end part and the side face between shank, cutting end part, described cutting end part is provided with the cutter groove, described cutting tip is fixed in the cutter groove, and described side face is provided with the chip pocket communicated with described cutter groove, and described cutter hub is provided with the interior cold hole that is through to cutting end part from shank, described side face is provided with a plurality of die cavities, and described die cavity is provided with the intercommunicating pore communicated with described interior cold hole.
Described a plurality of die cavity is arranged to cutting end part in the shape of a spiral from shank, and has common axial lift angle with chip pocket.From shank to cutting end part, each die cavity repeatedly the aperture of through hole increase successively.
Described intercommunicating pore is opened in the center of described die cavity bottom surface.
The central shaft of described intercommunicating pore and the rotary middle spindle of described cutter hub are coplanar.
Described cutting tip comprises outer cutting tip and interior cutting tip, and described outer cutting tip is close to described side face setting, and described interior cutting tip is close to the rotary middle spindle setting of described cutter hub.
Compared with prior art, the utility model has the advantage of:
Drilling tool of the present utility model, be provided with a plurality of die cavities on side face, die cavity is provided with the intercommunicating pore communicated with interior cold hole, cooling medium mobile during work is through interior cold hole, intercommunicating pore is delivered to die cavity, form dynamic cooling medium guide pillar between cutter and processed hole inwall, it can the variation to drilling tool surrounding pressure according to amount of deflection and the dynamic auto adjustment medium of cutting vibration, thereby eliminate or suppress cutting amount of deflection and the cutting vibration of drilling tool, even if make in deep-processing process, also can effectively suppress vibration, eliminate the impact of elongation on the finished surface cylindricity, widen the application of drilling tool in big L/D ratio pass machining operating mode, in addition, drilling tool of the present utility model has abundant cooling effect, axial cutting zone is carried out fully cooling in, the side direction cutting zone has also been carried out sufficient cooling, the service life of having improved greatly drilling tool.
The accompanying drawing explanation
Fig. 1 is the perspective view of the utility model drilling tool the first embodiment.
Fig. 2 is the main TV structure schematic diagram of the utility model drilling tool the first embodiment.
Fig. 3 is the partial enlarged drawing of Fig. 1.
Fig. 4 is the perspective view of the utility model drilling tool the second embodiment.
Fig. 5 is the main TV structure schematic diagram of the utility model drilling tool the second embodiment.
Fig. 6 is the partial enlarged drawing of Fig. 4.
In figure, each label means:
1, cutter hub; 2, cutting tip; 3, chip pocket; 4, securing member; 11, shank; 12, cutting end part; 13, side face; 14, cutter groove; 15, interior cold hole; 16, die cavity; 17, intercommunicating pore; 21, outer cutting tip; 22, interior cutting tip.
The specific embodiment
Fig. 1 to Fig. 3 shows the first drilling tool embodiment of the present utility model, this drilling tool, comprise cutter hub 1, cutting tip 2 and securing member 4, cutter hub 1 is by shank 11, cutting end part 12 and be positioned at shank 11, side face 13 between cutting end part 12 forms, cutting end part 12 is provided with cutter groove 14, cutting tip 2 is fixed in cutter groove 14 by securing member 4, side face 13 is provided with the chip pocket 3 communicated with cutter groove 14, cutter hub 1 is provided with the interior cold hole 15 that is through to cutting end part 12 from shank 11, side face 13 is provided with a plurality of die cavities 16, die cavity 16 is provided with the intercommunicating pore 17 communicated with interior cold hole 15, cooling medium mobile during work is through interior cold hole 15, intercommunicating pore 17 is delivered to die cavity 16, form dynamic cooling medium guide pillar between cutter and processed hole inwall, it can the variation to drilling tool surrounding pressure according to amount of deflection and the dynamic auto adjustment medium of cutting vibration, thereby eliminate or suppress cutting amount of deflection and the cutting vibration of drilling tool, even if make in deep-processing process, also can effectively suppress vibration, eliminate the impact of elongation on the finished surface cylindricity, widen the application of drilling tool in big L/D ratio pass machining operating mode, in addition, drilling tool of the present utility model has abundant cooling effect, axial cutting zone is carried out fully cooling in, the side direction cutting zone has also been carried out sufficient cooling, the service life of having improved greatly drilling tool.
In the present embodiment, a plurality of die cavities 16 are arranged to cutting end part 12 in the shape of a spiral from shank 11, and have common axial lift angle with chip pocket 3.From shank 11 to cutting end part 12,16 of each die cavities aperture of through hole 17 repeatedly increase successively, so that the place of overhanging greatly to drilling tool provides larger circumferential pressure, the amount of deflection at more effective inhibition cutting end part 12 places, make up the drilling tool poorer deficiency of larger rigidity that overhangs; Intercommunicating pore 17 is opened in the center of die cavity 16 bottom surfaces, is convenient to being uniformly distributed of cooling fluid, improves its balance and stability.The rotary middle spindle of the central shaft of intercommunicating pore 17 and cutter hub 1 is coplanar, in order to guarantee the intensity of side face 13.
In the present embodiment, cutting tip 2 comprises outer cutting tip 21 and interior cutting tip 22, and outer cutting tip 21 arranges close to side face 13, and interior cutting tip 22 is close to the rotary middle spindle setting of cutter hub 1.
In the present embodiment, cutter hub 1 has die cavity 16 on 13, two side faces 13 of two side faces and is arranged symmetrically with about the rotary middle spindle of cutter hub 1, is convenient to like this protect the orthogonal cutting equilibrium of forces.
Drilling tool of the present utility model is when work, the mobile cooling medium of a part is delivered to cutting zone through interior cold hole 15, the mobile cooling medium of another part is delivered to die cavity 16 through interior cold hole 15, intercommunicating pore 17, side face 13 and Drilling operation surface are sealed in the most of cooling medium in die cavity 16 in die cavity 16, and fraction is arranged between side face 13 and Drilling operation surface, make on side face 13 to form the circumferential pressure that there is equivalent amount with die cavity 16, and the same with the distributed architecture of die cavity 16, the distribution of this pressure group is about the pivot axial symmetry of cutter hub 1.Cooling medium depends on that to the size of die cavity 16 and Drilling operation surface applied pressure the pressure of cooling medium, the base area of die cavity 16 and bottom surface and the gap between the Drilling operation surface of die cavity 16 determine, at the base area one of the pressure of cooling medium and die cavity 16 regularly, gap between the bottom surface of die cavity 16 and Drilling operation surface is less, gives die cavity 16 applied pressures larger.When cutting end part 12 produces cutting vibration, this pressure group acts on die cavity 16 the cutting moment that produces an opposing vibration, this moment suppresses, the decay cutting vibration, when cutting moment is enough large, even can eliminate vibration, thereby the raising machined surface quality, and prevent the drilling tool fracture that vibration causes, effectively avoid workpiece to scrap.The mobile cooling medium that has certain pressure between side face 13 and Drilling operation surface, can reduce the friction between drilling tool and Drilling operation surface, improves machined surface quality.Simultaneously, the pressure group acted on die cavity 16 can suppress the rotary middle spindle generation amount of deflection that cutting end part 12 departs from cutter hub 1, makes the Drilling operation surface have better axial, radial dimension.
Fig. 4 to Fig. 6 shows the second drilling tool embodiment of the present utility model, and the present embodiment and a upper embodiment are basic identical, distinguishes and only is, cutting tip 2 is to be held under the strain effect of cutter groove, does not need securing member to be connected.
Although the utility model discloses as above with preferred embodiment, yet not in order to limit the utility model.Any those of ordinary skill in the art, in the situation that do not break away from the technical solutions of the utility model scope, all can utilize the technology contents of above-mentioned announcement to make many possible changes and modification to technical solutions of the utility model, or be revised as the equivalent embodiment of equivalent variations.Therefore, every content that does not break away from technical solutions of the utility model,, all should drop in the scope of technical solutions of the utility model protection any simple modification made for any of the above embodiments, equivalent variations and modification according to the utility model technical spirit.
Claims (9)
1. a drilling tool, comprise cutter hub (1) and cutting tip (2), described cutter hub (1) is by shank (11), cutting end part (12) and be positioned at shank (11), side face (13) between cutting end part (12) forms, described cutting end part (12) is provided with cutter groove (14), described cutting tip (2) is fixed in cutter groove (14), described side face (13) is provided with the chip pocket (3) communicated with described cutter groove (14), described cutter hub (1) is provided with the interior cold hole (15) that is through to cutting end part (12) from shank (11), it is characterized in that: described side face (13) is provided with a plurality of die cavities (16), described die cavity (16) is provided with the intercommunicating pore (17) communicated with described interior cold hole (15).
2. drilling tool according to claim 1, it is characterized in that: described a plurality of die cavities (16) are arranged to cutting end part (12) in the shape of a spiral from shank (11), and have common axial lift angle with chip pocket (3).
3. drilling tool according to claim 1 and 2 is characterized in that: from shank (11) to cutting end part (12), each die cavity (16) repeatedly the aperture of through hole (17) increase successively.
4. drilling tool according to claim 1 and 2, it is characterized in that: described intercommunicating pore (17) is opened in the center of described die cavity (16) bottom surface.
5. drilling tool according to claim 3, it is characterized in that: described intercommunicating pore (17) is opened in the center of described die cavity (16) bottom surface.
6. drilling tool according to claim 1 and 2, it is characterized in that: the rotary middle spindle of the central shaft of described intercommunicating pore (17) and described cutter hub (1) is coplanar.
7. drilling tool according to claim 5, it is characterized in that: the rotary middle spindle of the central shaft of described intercommunicating pore (17) and described cutter hub (1) is coplanar.
8. drilling tool according to claim 1 and 2, it is characterized in that: described cutting tip (2) comprises outer cutting tip (21) and interior cutting tip (22), described outer cutting tip (21) arranges close to described side face (13), and described interior cutting tip (22) is close to the rotary middle spindle setting of described cutter hub (1).
9. drilling tool according to claim 7, it is characterized in that: described cutting tip (2) comprises outer cutting tip (21) and interior cutting tip (22), described outer cutting tip (21) arranges close to described side face (13), and described interior cutting tip (22) is close to the rotary middle spindle setting of described cutter hub (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203801905U CN203316794U (en) | 2013-06-28 | 2013-06-28 | Drilling cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203801905U CN203316794U (en) | 2013-06-28 | 2013-06-28 | Drilling cutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203316794U true CN203316794U (en) | 2013-12-04 |
Family
ID=49656191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203801905U Expired - Lifetime CN203316794U (en) | 2013-06-28 | 2013-06-28 | Drilling cutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203316794U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014205948A1 (en) * | 2013-06-28 | 2014-12-31 | 株洲钻石切削刀具股份有限公司 | Boring cutter |
-
2013
- 2013-06-28 CN CN2013203801905U patent/CN203316794U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014205948A1 (en) * | 2013-06-28 | 2014-12-31 | 株洲钻石切削刀具股份有限公司 | Boring cutter |
| CN104249180A (en) * | 2013-06-28 | 2014-12-31 | 株洲钻石切削刀具股份有限公司 | Drilling tool |
| CN104249180B (en) * | 2013-06-28 | 2017-05-24 | 株洲钻石切削刀具股份有限公司 | Drilling tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131204 |