CN205270958U - Superhard composite drill bit and blade, drilling rod thereof - Google Patents
Superhard composite drill bit and blade, drilling rod thereof Download PDFInfo
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- CN205270958U CN205270958U CN201521078354.4U CN201521078354U CN205270958U CN 205270958 U CN205270958 U CN 205270958U CN 201521078354 U CN201521078354 U CN 201521078354U CN 205270958 U CN205270958 U CN 205270958U
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- drilling rod
- blade
- facade
- chip area
- rod body
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Abstract
The utility model discloses a superhard composite drill bit and blade, drilling rod thereof. Chip groove and inlay groove have been offered to the drilling rod body that the drilling rod extends around including on the drilling rod body, tang part on inlay groove has the slot part in the part of the entity between each chip groove and is in the front end lateral wall of chip groove, tang part have with the parallel facade of the axis of drilling rod body and with the crossing step face of axis. The utility model discloses set up inlay groove's tang part on the cell wall face of chip groove to set up the row's of helping tang of intercommunication chip groove between the part of the main part at the blade body and wing limit, like this in drilling processing, the accessible is discharged in the chip groove, thereby has been made things convenient for the chip removal in the drilling processing in should the row's of helping tang emiting into the chip groove with the smear metal, has guaranteed the discharge that the smear metal can be smooth, has just also guaranteed going on smoothly of drilling operation.
Description
Technical field
This utility model relates to a kind of superhard composite drill bit and blade, drilling rod.
Background technology
At present, drill bit is as a kind of common hole machined instrument, it is adaptable to hole in non-ferrous metal, ferrous metal and nonmetallic materials. Drill bit material common are carbon steel, high-speed steel, hard alloy etc. The bit wear of these materials is fast, and low precision, efficiency is low. Particularly, some difficult-to-machine materials, drilling quality is difficult to meet production requirement.
Chinese patent literature CN101157149A discloses " a kind of superhard material drilling bit ", including the blade that drilling rod and front end thereof assemble, the front end face of drilling rod offers the embedding slot of the yi word pattern radially extended, and offers the spiral chip area connected with this embedding slot on the periphery of drilling rod; Blade is the pentagonal block being inlaid in this embedding slot, and the front portion of blade is exposed from the front end of drilling rod, and the edge of exposed portion is blade. But blade can block the leading portion of discharge launder in this drill bit, cause that the chip produced in drilling processing is difficult to smoothly enter in discharge launder, thus causing the problem that chip cannot be discharged smoothly from discharge launder.
Utility model content
The purpose of this utility model is to provide a kind of drilling rod being easy to chip removal, additionally provides a kind of blade for being arranged on drilling rod simultaneously and uses the superhard composite drill bit of this blade and drilling rod.
In order to realize object above, in this utility model, the technical scheme of drilling rod is as follows:
Drilling rod, including the drilling rod body that front and back extend, drilling rod body offers and is on outer peripheral face and from the front end face chip area extended back and the embedding slot for blade setting-in being on front end face, chip area has more than two and circumferentially-spaced layout at drilling rod body, embedding slot has the trench portions in the entity part being between each chip area and the seam part being in the front end side wall of chip area, and seam part has the facade parallel with the axis of drilling rod body and the step surface with described axes intersect.
Embedding slot is flat recess, and the seam part of embedding slot has two and is arranged symmetrically in the two ends of trench portions, and the facade of seam part flushes in the side wall surface of trench portions, and the step surface of seam part flushes in the groove bottom of trench portions.
Chip area is the axially extended straight trough along drilling rod.
Described seam is partially on the side cell wall of chip area, by chamfering tangent plane or Inside concave fillet transition between another trough wall surface and the front end face of drilling rod body of chip area.
In this utility model, the technical scheme of blade is as follows:
Blade, including for being embedded in the blade body in the embedding slot being welded on drilling rod body, blade body has the main part for being arranged in the trench portions of embedding slot and the wing rim portion for being arranged in the seam part of embedding slot, what wing rim portion had a facade for seam part dorsad exposes facade, exposing the transition face transition by step planar or curved or inclined plane shape between facade and main part, transition face surrounds the row's of the helping seam for connecting chip area with exposing facade.
Wing rim portion has two and is arranged symmetrically in the both sides of main part, and both wings rim portion and main part are that yi word pattern is arranged.
The front end of main part is most advanced and sophisticated, most advanced and sophisticated and between transition face by chamfering tangent plane or Inside concave fillet transition, the front side exposing facade of described wing rim portion has the blade extending to the vertical edge exposing facade from tip.
Blade is from the most advanced and sophisticated inclination cutting edge starting and tilting gradually downward.
In this utility model, the technical scheme of superhard composite drill bit is as follows:
Superhard composite drill bit, including the blade that drilling rod and front end thereof weld, blade includes the blade body being embedded in the embedding slot being welded on drilling rod body, drilling rod includes the drilling rod body that front and back extend, drilling rod body offers and is on outer peripheral face and from the front end face chip area extended back and the embedding slot for blade setting-in being on front end face, chip area has more than two, and in the circumferentially-spaced layout of drilling rod body, embedding slot has the trench portions in the entity part being between each chip area and the seam part being in the front end side wall of chip area, seam part has the facade parallel with the axis of drilling rod body and the step surface with described axes intersect, blade body has the main part for being arranged in the trench portions of embedding slot and the wing rim portion for being arranged in the seam part of embedding slot, what wing rim portion had a facade for seam part dorsad exposes facade, exposing the transition face transition by step planar or curved or inclined plane shape between facade and main part, transition face surrounds the row's of the helping seam for connecting chip area with exposing facade.
The front end of drilling rod body is provided with the pedestal of hard alloy material, and blade is the block of cubic boron nitride material, and blade vacuum brazing is fixed on drilling rod body.
The seam part of embedding slot is opened on the trough wall surface of chip area by this utility model, so that arranging the row's of helping seam of connection chip area between the main part and wing rim portion of blade body, so in Drilling operation, this row's of helping seam can be passed through chip is entered in chip area, discharge then through in chip area, thus the chip removal facilitated in Drilling operation, it is ensured that chip can be discharged smoothly, also ensures that being smoothed out of bore operation.
Accompanying drawing explanation
Fig. 1 is the structural representation of superhard composite drill bit embodiment of the present utility model;
Fig. 2 is the structural representation of drilling rod in Fig. 1;
Fig. 3 is the structural representation of blade in Fig. 1.
Detailed description of the invention
The embodiment of superhard composite drill bit in this utility model: as shown in Figure 1 to Figure 3, this superhard composite drill bit is that one can regrinding type superhard material drilling bit, the blade 2 fixing by drilling rod 1 and fore vacuum soldering thereof forms, wherein drilling rod 1 adopts hard alloy material, the pedestal of hard alloy material is obtained with the front end at drilling rod 1, and blade 2 adopts cubic boron nitride material, the welding quality between blade 2 and drilling rod 1 so can be ensured.
Drilling rod 1 includes the drilling rod body 11 that front and back extend, and drilling rod body 11 offers and is on outer peripheral face and from the front end face chip area 13 extended back and the embedding slot 12 for blade 2 setting-in being on front end face. The straight trough that chip area 13 extends for front and back, and chip area 13 has more than two and circumferentially-spaced layout at drilling rod body 11. Embedding slot 12 is flat recess, is made up of the trench portions 14 in the entity part being between each chip area 13 and the seam part 15 being in the front end side wall of chip area 13, and seam part 15 has two and is arranged symmetrically in the two ends of trench portions 14. Seam part 15 has the facade parallel with the axis of drilling rod body 11 and the step surface with described axes intersect, the facade of two seam parts 15 flushes in the two side walls of trench portions 14 respectively, and the step surface of seam part 15 flushes in the groove bottom of trench portions 14. Chip area 13 is V-shaped groove, and the front end of the side trough wall surface of chip area 13 is arranged between the seam part 15 of embedding slot 12, another trough wall surface and the front end face of drilling rod body 11 by chamfering tangent plane transition.
Blade 2 includes the blade body 21 being embedded in the embedding slot 12 being welded on drilling rod body 11, and blade body 21 is made up of the main part 22 in the trench portions 14 being arranged on embedding slot 12 and the wing rim portion 23 being arranged in the seam part 15 of embedding slot 12. Wing rim portion 23 has two and is arranged symmetrically in the both sides of main part 22, and both wings rim portion 23 and main part 22 are arranged in yi word pattern, and the thickness of main part 22 is the twice of thickness of wing rim portion 23. What wing rim portion 23 had that the facade with seam part 15 is affixed coordinate facade is affixed with the step surface of seam part 15 coordinate bottom surface and dorsad seam part 15 facade expose facade, exposing by step planar transition face transition between facade and main part 22, transition face surrounds, with exposing facade, the row's of the helping seam communicated that coincide with chip area 13. The front end of main part 22 is most advanced and sophisticated, most advanced and sophisticated and between transition face by chamfering tangent plane transition. The front side exposing facade of wing rim portion 23 has the blade extending to the vertical edge exposing facade from tip, and blade is from the most advanced and sophisticated inclination cutting edge starting and tilting gradually downward.
In the present embodiment, drill bit is to inlay ultra-hard material poly-crystal at hard alloy or metal material matrix top, forms a kind of superhard composite drill bit, in use can constantly reface, it is ensured that can drilling at high speeds, keep higher efficiency and hole machined precision. The top of pedestal is offered embedding slot 12, embedding slot 12 degree of depth and width and is determined according to the diameter of drilling rod 1, is generally d=(0.3 ~ 0.7) D, h=(0.4 ~ 0.8) D, wherein, D is drilling rod 1 diameter, and d is embedding slot 12 width, and h is embedding slot 12 degree of depth. The blade 2 of drill bit is ultra-hard material poly-crystal, naturally it is also possible to select diamond material, different according to use occasion, selects the polycrystalline material of unlike material, and the thickness of blade 2 is compared with the little 0.04 ~ 0.2mm of well width. Pedestal and blade 2 adopt the mode of vacuum brazing to link together, with after this drill bit uses abrasion, it is possible to cutting edge is repeatedly refaced, is continuing with.
In the above-described embodiments, the chip area on drilling rod has two and is straight trough, in other embodiments, the quantity of chip area can also more than two, and each chip area can be not only straight trough, it is also possible to be helicla flute, the shape of corresponding embedding slot is corresponding with the quantity of chip area.
In the above-described embodiments, blade adopts cubic boron nitride material, in order to soldering, in other embodiments, blade can also the superhard material such as diamond, aluminium oxide.
In the above-described embodiments, transition face is step surface, and in other embodiments, transition face can also be inner concave arc surface or chamfering tangent plane.
The embodiment of drilling rod in this utility model: in the present embodiment, the structure of drilling rod is identical with the structure of drilling rod in above-described embodiment, therefore repeats no more.
The embodiment of blade in this utility model: in the present embodiment, the structure of blade is identical with the structure of blade in above-described embodiment, therefore repeats no more.
Claims (10)
1. drilling rod, including the drilling rod body that front and back extend, drilling rod body offers and is on outer peripheral face and from the front end face chip area extended back and the embedding slot for blade setting-in being on front end face, chip area has more than two and circumferentially-spaced layout at drilling rod body, it is characterized in that, embedding slot has the trench portions in the entity part being between each chip area and the seam part being in the front end side wall of chip area, and seam part has the facade parallel with the axis of drilling rod body and the step surface with described axes intersect.
2. drilling rod according to claim 1, it is characterized in that, embedding slot is flat recess, the seam part of embedding slot has two and is arranged symmetrically in the two ends of trench portions, the facade of seam part flushes in the side wall surface of trench portions, and the step surface of seam part flushes in the groove bottom of trench portions.
3. drilling rod according to claim 1, it is characterised in that chip area is the axially extended straight trough along drilling rod.
4. the drilling rod according to claim 1 or 2 or 3, it is characterised in that described seam is partially on the side cell wall of chip area, by chamfering tangent plane or Inside concave fillet transition between another trough wall surface and the front end face of drilling rod body of chip area.
5. blade, including for being embedded in the blade body in the embedding slot being welded on drilling rod body, it is characterized in that, blade body has the main part for being arranged in the trench portions of embedding slot and the wing rim portion for being arranged in the seam part of embedding slot, what wing rim portion had a facade for seam part dorsad exposes facade, exposing the transition face transition by step planar or curved or inclined plane shape between facade and main part, transition face surrounds the row's of the helping seam for connecting chip area with exposing facade.
6. blade according to claim 5, it is characterised in that wing rim portion has two and is arranged symmetrically in the both sides of main part, both wings rim portion and main part are that yi word pattern is arranged.
7. the blade according to claim 5 or 6, it is characterized in that, the front end of main part is most advanced and sophisticated, most advanced and sophisticated and between transition face by chamfering tangent plane or Inside concave fillet transition, the front side exposing facade of described wing rim portion has the blade extending to the vertical edge exposing facade from tip.
8. blade according to claim 7, it is characterised in that blade is from the most advanced and sophisticated inclination cutting edge starting and tilting gradually downward.
9. superhard composite drill bit, including the blade that drilling rod and front end thereof weld, blade includes the blade body being embedded in the embedding slot being welded on drilling rod body, drilling rod includes the drilling rod body that front and back extend, drilling rod body offers and is on outer peripheral face and from the front end face chip area extended back and the embedding slot for blade setting-in being on front end face, chip area has more than two, and in the circumferentially-spaced layout of drilling rod body, it is characterized in that, embedding slot has the trench portions in the entity part being between each chip area and the seam part being in the front end side wall of chip area, seam part has the facade parallel with the axis of drilling rod body and the step surface with described axes intersect, blade body has the main part for being arranged in the trench portions of embedding slot and the wing rim portion for being arranged in the seam part of embedding slot, what wing rim portion had a facade for seam part dorsad exposes facade, exposing the transition face transition by step planar or curved or inclined plane shape between facade and main part, transition face surrounds the row's of the helping seam for connecting chip area with exposing facade.
10. superhard composite drill bit according to claim 9, it is characterised in that the front end of drilling rod body is provided with the pedestal of hard alloy material, blade is the block of cubic boron nitride material, and blade vacuum brazing is fixed on drilling rod body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521078354.4U CN205270958U (en) | 2015-12-22 | 2015-12-22 | Superhard composite drill bit and blade, drilling rod thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521078354.4U CN205270958U (en) | 2015-12-22 | 2015-12-22 | Superhard composite drill bit and blade, drilling rod thereof |
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| Publication Number | Publication Date |
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| CN205270958U true CN205270958U (en) | 2016-06-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201521078354.4U Active CN205270958U (en) | 2015-12-22 | 2015-12-22 | Superhard composite drill bit and blade, drilling rod thereof |
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| CN (1) | CN205270958U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108412496A (en) * | 2018-02-05 | 2018-08-17 | 武汉大学 | Squeeze crack device and rock crushing method |
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2015
- 2015-12-22 CN CN201521078354.4U patent/CN205270958U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108412496A (en) * | 2018-02-05 | 2018-08-17 | 武汉大学 | Squeeze crack device and rock crushing method |
| CN108412496B (en) * | 2018-02-05 | 2020-02-14 | 武汉大学 | Splitter and rock mass crushing method |
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