CN208811160U - A kind of novel hollow drill bit - Google Patents
A kind of novel hollow drill bit Download PDFInfo
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- CN208811160U CN208811160U CN201821439486.9U CN201821439486U CN208811160U CN 208811160 U CN208811160 U CN 208811160U CN 201821439486 U CN201821439486 U CN 201821439486U CN 208811160 U CN208811160 U CN 208811160U
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- drill bit
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Abstract
The utility model discloses a kind of novel hollow drill bits, belong to bit technique field, including cutting head, cutting head includes that the first cutting cutter hub, the second cutting cutter hub and third cut cutter hub, first cutting cutter hub includes the first cutting face, the second cutting face and third cutting face, and the first cutting face, the second cutting face and third cutting face are sequentially connected and are arranged on the first cutting cutter hub；Second cutting cutter hub include the 4th cutting face and with the 5th cutting face, the 4th cutting face be connected with the 5th cutting face and be arranged in second cutting cutter hub on, the 5th cutting face middle part be provided with chip curling groove；It includes the 6th cutting face and the 7th cutting face that third, which cuts cutter hub, and the 6th cutting face, which is connected with the 7th cutting face and third is arranged in, cuts cutter hub upper end, and the 7th cutting face is far from being provided with chip curling groove at central axis.The utility model has many advantages, such as that centering is more steady, high in machining efficiency and is not easy spring sword.
Description
Technical field
The utility model belongs to bit technique field, and in particular to a kind of novel hollow drill bit.
Background technique
Drill bit be in workpieces processing drilling go out through-hole or blind hole, and can be to the cutter of existing hole reaming.Drill bit
It is used in many fields, including machinery, drilling well, medical, timber, stone and glass etc., and core drill (also known as core drill, steel plate
Bore, cave is bored), title is Multi-blade Steel Plate Drill.It is that drill bit cutting hole is utilized using the form of multi-blade ring-type cutting
Outer diameter annulus, does not cut middle section, thus substantially increase drilling efficiency, and combine magnetic support drilling machine etc., it may be implemented
The bore operation of scene at any time, for common fluted drill, efficiency is more increased, and is cut brisk.
Notification number is CN201030448, and the day for announcing is that on 03 05th, 2008 Chinese document discloses one kind for boring
The hollow boring bit for cutting metal, including drill body, the drill lip for drilling metal and the drillstock that is connect with drilling machine, it is characterised in that: institute
It drill body, drill lip and the drillstock stated while being distributed on the hollow cylinder being connected, the drill body is hollow cylinder
Cylinder, drillstock are in hollow cylinder top, and drill lip is in the lower end surface of hollow cylinder, which is to be evenly distributed on brill
Serrated edge on the circumference of body end face is provided with spiral shape dregs guiding groove along blade in drill body upwards.
Spiral dregs guiding groove is provided in the drill body of the patent drill bit, the metal fillings generated in drilling can be arranged from dregs guiding groove
Out, will not be wrapped on drill bit influences drilling, but stress is bigger than normal in use for drill lip, be easy to cause centering unstable and jumps
Sword.
Summary of the invention
The purpose of this utility model is to provide a kind of centering novel hollows more steady, high in machining efficiency and being not easy spring sword
Drill bit.
The purpose of this utility model is achieved through the following technical solutions:
A kind of novel hollow drill bit, including cutting head, it is characterised in that: the cutting head includes the first cutting cutter hub, the
Two cutting cutter hubs and third cut cutter hub, and the first cutting cutter hub includes intilted first cutting face and central axis
The second vertical cutting face and the third cutting face being inclined outwardly, first cutting face, the second cutting face and third cutting face
It is sequentially connected and is arranged on the first cutting cutter hub；The second cutting cutter hub includes intilted 4th cutting face and in
The 5th vertical cutting face of mandrel line, the 4th cutting face are connected with the 5th cutting face and are arranged on the second cutting cutter hub,
Chip curling groove is provided in the middle part of 5th cutting face；Third cutting cutter hub includes intilted 6th cutting face and in
The 7th vertical cutting face of mandrel line, the 6th cutting face are connected with the 7th cutting face and are arranged on third cutting cutter hub
End, the 7th cutting face is far from being provided with chip curling groove at central axis.
Preferably, the chip space is equipped with the chip removal mouth being connected with cylindrical cavity in cutting head.
Preferably, the cutting cutter hub is hard alloy, and the cutting cutter hub is welded in cutting head.
Preferably, the second cutting cutter hub, the first cutting cutter hub and third cutting cutter hub are successively arranged along clockwise direction
Column.
Preferably, it is described cutting cutter hub quantity be 3,6,9,12,15,18,21,24,27,
One of 30 and 33.
Preferably, the angle between second cutting face and third cutting face is for 120-170 degree.
The technical program has the beneficial effect that:
One, novel hollow drill bit provided by the utility model, including cutting head, cutting head include the first cutting cutter hub, the
Two cutting cutter hubs and third cut cutter hub, and the first cutting cutter hub includes intilted first cutting face and central axis upright
The second cutting face and the third cutting face that is inclined outwardly, the first cutting face, the second cutting face and third cutting face are sequentially connected
And it is arranged on the first cutting cutter hub；Second cutting cutter hub include intilted 4th cutting face and with central axis upright
5th cutting face, the 4th cutting face are connected with the 5th cutting face and are arranged on the second cutting cutter hub, set in the middle part of the 5th cutting face
It is equipped with chip curling groove；Third cutting cutter hub includes intilted 6th cutting face and the 7th cutting face with central axis upright,
6th cutting face is connected with the 7th cutting face and third cutting cutter hub upper end is arranged in, and the 7th cutting face is set far from central axis line end
It is equipped with chip curling groove；First cutting cutter hub, which adds the second cutting face and third cutting face, reduces the cutting stress of the first cutting cutter hub,
The 7th cutting face being arranged on cutter hub is cut by the 5th cutting face being arranged on the second cutting cutter hub and third to share cutting
Stress, so that drill bit centering is more steady and cutting cutter hub is not easy spring sword, drilling life of bit is longer, and being provided with for chip curling groove is conducive to
Expect the discharge of bits, material bits are discharged along chip curling groove, and play guiding role to material bits, when machine tool chief axis has shaking, guarantee material bits
Will not the discharge of unordered shape, squeeze cutting cutter hub.
Two, novel hollow drill bit provided by the utility model, chip space is equipped in cutting head to be connected with cylindrical cavity
Chip removal mouth, the setting of chip removal mouth is so that expect that considering outlet to be worth doing is easier, and prevents material bits from winding drill bit.
Three, novel hollow drill bit provided by the utility model, cutting cutter hub are hard alloy, and cutting cutter hub is welded on cutting
On head, it ensure that hollow boring bit has higher chip speed, so that processing efficiency is higher.
Four, novel hollow drill bit provided by the utility model, the second cutting cutter hub, the first cutting cutter hub and third bite
Body is arranged successively along clockwise direction, so that cutting stress is more preferable when drill bit is processed, so that drill bit centering is more steady.
Five, novel hollow drill bit provided by the utility model, the multiple that cutting cutter hub quantity is 3, cuts the quantity of cutter hub
It is one of 3,6,9,12,15,18,21,24,27,30 and 33, according to the reality of processing
Demand selects cutting cutter hub quantity appropriate, meets more processing requests.
Six, novel hollow drill bit provided by the utility model, the angle between the second cutting face and third cutting face be for
120-170 degree, the angle of optimization cutting cutter hub, control are cut the drop size and cutting width in cutting face on cutter hub, are improved
It cuts the tool edge wear-proof of cutter hub and improves cutting heat.
Detailed description of the invention
The utility model aforementioned and being detailed description below becomes more apparent upon when reading in conjunction with the following drawings, in attached drawing:
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the left view structural representation of Fig. 1；
Fig. 3 is the structural schematic diagram that the utility model first cuts cutter hub；
Fig. 4 is the left view structural representation of Fig. 3；
Fig. 5 is the structural schematic diagram that the utility model second cuts cutter hub；
Fig. 6 is the left view structural representation of Fig. 5；
Fig. 7 is the structural schematic diagram of the utility model third cutting cutter hub；
Fig. 8 is the left view structural representation of Fig. 7；
Fig. 9 is the structural schematic diagram that the utility model embodiment 2 first cuts cutter hub；
Figure 10 is the left view structural representation of Fig. 9；
Figure 11 is the structural schematic diagram that the utility model embodiment 2 second cuts cutter hub；
Figure 12 is the left view structural representation of Figure 11；
In figure:
1, drilling rod；2, clamping end；3, cutting head；4, chip space；5, cylindrical cavity；6, the first cutting cutter hub；7, second
Cut cutter hub；8, third cuts cutter hub；9, the first cutting face；10, the second cutting face；11, third cutting face；12, the 4th cutting
Face；13, the 5th cutting face；14, chip curling groove；15, the 6th cutting face；16, the 7th cutting face；17, locating slot；18, chip removal mouth；
19, the 8th cutting face；20, the 9th cutting face；21, the tenth cutting face.
Specific embodiment
It is further illustrated below by several specific embodiments and realizes the utility model aim technical solution, needed
Bright, the technical solution of the requires of the utility model protection includes but is not limited to following embodiment.
Embodiment 1
As a kind of most basic embodiment of the utility model, present embodiment discloses a kind of novel hollow drill bits, such as
Shown in Fig. 1-Fig. 8, including the cylindrical drilling rod 1 with a central axis, one end of drilling rod 1 is clamping end 2, and the other end is
Cutting head 3 is provided with the chip space 4 extended spirally from cutting head 3 toward clamping end 2,1 axle center of drilling rod on 1 external peripheral surface of drilling rod
It is provided with the cylindrical cavity 5 extended from cutting head 3 toward clamping end 2, the cutting head 3 includes the first cutting cutter hub 6, the
Two cutting cutter hubs 7 and third cut cutter hub 8, and the first cutting cutter hub 6 includes intilted first cutting face 9 and center
Axis it is vertical second cutting face 10 and the third cutting face 11 that is inclined outwardly, first cutting face 9,10 and of the second cutting face
Third cutting face 11 is sequentially connected and is arranged on the first cutting cutter hub 6；The second cutting cutter hub 7 includes intilted the
Four cutting faces 12 and the 5th cutting face 13 with central axis upright, the 4th cutting face 12 is connected simultaneously with the 5th cutting face 13
Setting is provided with chip curling groove 14 in the middle part of the 5th cutting face 13 on the second cutting cutter hub 7；The third cutting cutter hub 8 wraps
Include intilted 6th cutting face 15 and the 7th cutting face 16 with central axis upright, the 6th cutting face 15 and the 7th
Cutting face 16 is connected and third cutting 8 upper end of cutter hub is arranged in, and the 7th cutting face 16 is far from being provided with volume at central axis
Consider slot 14 to be worth doing；2 liang of clamping end adjacent surface is provided with locating slot 17, and the clamping end 2 is provided centrally with drillstock inner hole, described to cut
The diameter for cutting first 3 is greater than the diameter of drilling rod 1, and the diameter of the drilling rod 1 is greater than the diameter of clamping end 2.
Novel hollow drill bit provided by the utility model, including the cylindrical drilling rod 1 with a central axis, drilling rod 1
One end be clamping end 2, the other end is cutting head 3, and drilling rod 1, clamping end 2 and cutting head 3 be structure as a whole, and impact resistance is more
By force；The chip space 4 extended spirally from cutting head 3 toward clamping end 2 is provided on 1 external peripheral surface of drilling rod, it can be effectively by material
Bits discharge, material bits, which will not be wrapped on drill bit, influences drilling；1 axle center of drilling rod is provided with one and extends from cutting head 3 toward clamping end 2
Cylindrical cavity 5, cutting head 3 includes that the first cutting cutter hub 6, second cuts cutter hub 7 and third and cuts cutter hub 8, the first cutting
Cutter hub 6 is cut including intilted first cutting face 9, with the second cutting face 10 of central axis upright and the third being inclined outwardly
Bevel 11, the first cutting face 9, the second cutting face 10 and third cutting face 11 are sequentially connected and are arranged on the first cutting cutter hub 6；
Second cutting cutter hub 7 includes intilted 4th cutting face 12 and the 5th cutting face 13 with central axis upright, and the 4th cuts
Bevel 12 is connected with the 5th cutting face 13 and is arranged on the second cutting cutter hub 7, is provided with volume in the middle part of the 5th cutting face 13
Consider slot 14 to be worth doing；Third cuts cutter hub 8 and includes intilted 6th cutting face 15 and the 7th cutting face 16 with central axis upright,
6th cutting face 15 is connected with the 7th cutting face 16 and third cutting 8 upper end of cutter hub is arranged in, and the 7th cutting face 16 is separate
Chip curling groove 14 is provided at central axis；First cutting cutter hub 6, which adds the second cutting face 10 and third cutting face 11, reduces by first
The cutting stress for cutting cutter hub 6 is cut and is arranged on cutter hub by the 5th cutting face 13 and third that are arranged on the second cutting cutter hub 7
The 7th cutting face 16 share cutting stress so that drill bit centering is more steady and cutting cutter hub is not easy spring sword, drill bit uses the longevity
Order it is longer, chip curling groove 14 be provided be conducive to material bits discharge, material bits along chip curling groove 14 be discharged, and to material bits play guiding make
With, when machine tool chief axis has shaking, guarantee material bits will not the discharge of unordered shape, squeeze cutting cutter hub；The adjacent surface setting of 2 liang of clamping end
There is locating slot 17, can effectively position drill bit, prevents from shaking in process, lead to Drill Crack；2 center of clamping end
It is provided with drillstock inner hole, the diameter of cutting head 3 is greater than the diameter of drilling rod 1, and the diameter of drilling rod 1 is greater than the diameter of clamping end 3, full
Reduce the use of material under the premise of sufficient processing request and fastness to the greatest extent.
Embodiment 2
As a kind of preferred embodiment of the utility model, present embodiment discloses a kind of novel hollow drill bits, such as scheme
1, shown in Fig. 2, Fig. 7, Fig. 8, Fig. 9, Figure 10, Figure 11 and Figure 12, including the cylindrical drilling rod 1 with a central axis, drilling rod 1
One end be clamping end 2, the other end is cutting head 3, is provided on 1 external peripheral surface of drilling rod from cutting head 3 toward 2 spiral of clamping end
The chip space 4 of extension, 1 axle center of drilling rod are provided with the cylindrical cavity 5 extended from cutting head 3 toward clamping end 2, the cutting
First 3 include that the first cutting cutter hub 6, second cuts cutter hub 7 and third cutting cutter hub 8, and the first cutting cutter hub 6 includes lean-in
Second cutting face 10 in oblique the first cutting face 9 and central axis upright and the third cutting face 11 being inclined outwardly, described first
Cutting face 9, the second cutting face 10 and third cutting face 11 are sequentially connected and are arranged on the first cutting cutter hub 6, and described first cuts
Be provided with the 9th cutting face 20 on bevel 9, the 9th cutting face 20 respectively with 10 phase of the first cutting face 9 and the second cutting face
Even, the angle of the 9th cutting face 20 and central axis less than the angle in the first cutting face 9 and central axis, cut by the third
Be provided with the 8th cutting face 19 on bevel 11, the 8th cutting face 19 respectively with 11 phase of the second cutting face 10 and third cutting face
Even, the 8th cutting face 19 is less than the angle in third cutting face 11 and central axis with the angle of central axis；Described second
Cutting cutter hub 7 includes intilted 4th cutting face 12 and the 5th cutting face 13 with central axis upright, and the described 4th cuts
Bevel 12 is connected with the 5th cutting face 13 and is arranged on the second cutting cutter hub 7, is provided with volume in the middle part of the 5th cutting face 13
Consider slot 14 to be worth doing, the 5th cutting face 13 is provided with the tenth cutting face 21 being inclined outwardly far from 12 end of the 4th cutting face；Described
Three cutting cutter hubs 8 include intilted 6th cutting face 15 and the 7th cutting face 16 with central axis upright, the described 6th
Cutting face 15 is connected with the 7th cutting face 16 and third cutting 8 upper end of cutter hub is arranged in, and the 7th cutting face 16 is far from center
Chip curling groove 14 is provided at axis；2 liang of clamping end adjacent surface is provided with locating slot 17, and the clamping end 2 is provided centrally with
Drillstock inner hole, the diameter of the cutting head 3 are greater than the diameter of drilling rod 1, and the diameter of the drilling rod 1 is greater than the diameter of clamping end 2.
The 9th cutting face 20 is added on first cutting face 9, and the 8th cutting face 19 is added on third cutting face 11, is further subtracted
To the abrasion of the first cutting cutter hub 6 when small cutting, reduce by the first cutting 6 spring sword of cutter hub.The tenth is added on 5th cutting face 13 to cut
Bevel 21, abrasion when being further reduced cutting to the second cutting cutter hub 7, reduces by the second cutting 7 spring sword of cutter hub.
Embodiment 3
As a kind of preferred embodiment of the utility model, present embodiment discloses a kind of novel hollow drill bits, such as scheme
Shown in 1-Fig. 8, including the cylindrical drilling rod 1 with a central axis, one end of drilling rod 1 is clamping end 2, and the other end is to cut
First 3 are cut, the chip space 4 extended spirally from cutting head 3 toward clamping end 2 is provided on 1 external peripheral surface of drilling rod, 1 axle center of drilling rod is set
It is equipped with the cylindrical cavity 5 extended from cutting head 3 toward clamping end 2, the cutting head 3 includes the first cutting cutter hub 6, second
It cuts cutter hub 7 and third cuts cutter hub 8, the first cutting cutter hub 6 includes intilted first cutting face 9 and central axis
Line it is vertical second cutting face 10 and the third cutting face 11 that is inclined outwardly, first cutting face 9, the second cutting face 10 and the
Three cutting faces 11 are sequentially connected and are arranged on the first cutting cutter hub 6；The second cutting cutter hub 7 includes the intilted 4th
Cutting face 12 and the 5th cutting face 13 with central axis upright, the 4th cutting face 12 is connected and sets with the 5th cutting face 13
It sets on the second cutting cutter hub 7, is provided with chip curling groove 14 in the middle part of the 5th cutting face 13；The third cuts cutter hub 8
Intilted 6th cutting face 15 and the 7th cutting face 16 with central axis upright, the 6th cutting face 15 and the 7th are cut
Bevel 16 is connected and third cutting 8 upper end of cutter hub is arranged in, and the 7th cutting face 16 is considered to be worth doing far from volume is provided at central axis
Slot 14；2 liang of clamping end adjacent surface is provided with locating slot 17, and the clamping end 2 is provided centrally with drillstock inner hole, the cutting
First 3 diameter is greater than the diameter of drilling rod 1, and the diameter of the drilling rod 1 is greater than the diameter of clamping end 2.
Preferably, the chip space 4 is equipped with the chip removal mouth 17 being connected with cylindrical cavity 5 in cutting head 3.
Preferably, the cutting cutter hub is hard alloy, and the cutting cutter hub is welded in cutting head 3.
Preferably, it is described second cutting cutter hub 7, first cut cutter hub 6 and third cutting cutter hub 8 along clockwise direction according to
Secondary arrangement.
Preferably, it is described cutting cutter hub quantity be 3,6,9,12,15,18,21,24,27,
One of 30 and 33.
Preferably, the angle between second cutting face 10 and third cutting face 11 is for 120-170 degree.
Novel hollow drill bit provided by the utility model, including the cylindrical drilling rod 1 with a central axis, drilling rod 1
One end be clamping end 2, the other end is cutting head 3, and drilling rod 1, clamping end 2 and cutting head 3 be structure as a whole, and impact resistance is more
By force；The chip space 4 extended spirally from cutting head 3 toward clamping end 2 is provided on 1 external peripheral surface of drilling rod, it can be effectively by material
Bits discharge, material bits, which will not be wrapped on drill bit, influences drilling；1 axle center of drilling rod is provided with one and extends from cutting head 3 toward clamping end 2
Cylindrical cavity 5, cutting head 3 includes that the first cutting cutter hub 6, second cuts cutter hub 7 and third and cuts cutter hub 8, the first cutting
Cutter hub 6 is cut including intilted first cutting face 9, with the second cutting face 10 of central axis upright and the third being inclined outwardly
Bevel 11, the first cutting face 9, the second cutting face 10 and third cutting face 11 are sequentially connected and are arranged on the first cutting cutter hub 6；
Second cutting cutter hub 7 includes intilted 4th cutting face 12 and the 5th cutting face 13 with central axis upright, and the 4th cuts
Bevel 12 is connected with the 5th cutting face 13 and is arranged on the second cutting cutter hub 7, is provided with volume in the middle part of the 5th cutting face 13
Consider slot 14 to be worth doing；Third cuts cutter hub 8 and includes intilted 6th cutting face 15 and the 7th cutting face 16 with central axis upright,
6th cutting face 15 is connected with the 7th cutting face 16 and third cutting 8 upper end of cutter hub is arranged in, and the 7th cutting face 16 is separate
Chip curling groove 14 is provided at central axis；First cutting cutter hub 6, which adds the second cutting face 10 and third cutting face 11, reduces by first
The cutting stress for cutting cutter hub 6 is cut and is arranged on cutter hub by the 5th cutting face 13 and third that are arranged on the second cutting cutter hub 7
The 7th cutting face 16 share cutting stress so that drill bit centering is more steady and cutting cutter hub is not easy spring sword, drill bit uses the longevity
Order it is longer, chip curling groove 14 be provided be conducive to material bits discharge, material bits along chip curling groove 14 be discharged, and to material bits play guiding make
With, when machine tool chief axis has shaking, guarantee material bits will not the discharge of unordered shape, squeeze cutting cutter hub；The adjacent surface setting of 2 liang of clamping end
There is locating slot 17, can effectively position drill bit, prevents from shaking in process, lead to Drill Crack；2 center of clamping end
It is provided with drillstock inner hole, the diameter of cutting head 3 is greater than the diameter of drilling rod 1, and the diameter of drilling rod 1 is greater than the diameter of clamping end 3, full
Reduce the use of material under the premise of sufficient processing request and fastness to the greatest extent.
Chip space 4 is equipped with the chip removal mouth 17 being connected with cylindrical cavity 5 in cutting head 3, and the setting of chip removal mouth 17 is so that material
Bits outlet is easier, and prevents material bits winding drill bit.Cutting cutter hub is hard alloy, and cutting cutter hub is welded in cutting head 3, guarantees
Hollow boring bit has higher chip speed, so that processing efficiency is higher.Second cutting cutter hub 7, first cuts cutter hub 6 and third is cut
Sharpener body 8 is arranged successively along clockwise direction, so that cutting stress is more preferable when drill bit is processed, so that drill bit centering is more steady.Cutting
Cutter hub quantity be 3 multiple, cut cutter hub quantity be 3,6,9,12,15,18,21,24,27,
One of 30 and 33, cutting cutter hub quantity appropriate is selected according to the actual demand of processing, meets more processing and wants
It asks.Angle between second cutting face 10 and third cutting face 11 is for 120-170 degree, the angle of optimization cutting cutter hub, control
The drop size and cutting width in cutting face on cutter hub are cut, the tool edge wear-proof of cutting cutter hub is improved and improves cutting heat
Amount.
Claims (6)
1. a kind of novel hollow drill bit, including the cylindrical drilling rod (1) with a central axis, one end of drilling rod (1) is folder
It holds end (2), the other end is cutting head (3), is provided on drilling rod (1) external peripheral surface from cutting head (3) past clamping end (2) spiral
The chip space (4) of extension, it is characterised in that: the cutting head (3) include first cutting cutter hub (6), second cutting cutter hub (7) and
Third cuts cutter hub (8), and first cutting cutter hub (6) includes intilted first cutting face (9) and central axis upright
The second cutting face (10) and the third cutting face (11) that is inclined outwardly, first cutting face (9), the second cutting face (10) and
Third cutting face (11) is sequentially connected and is arranged in the first cutting cutter hub (6)；Second cutting cutter hub (7) includes lean-in
The 4th oblique cutting face (12) and the 5th cutting face (13) with central axis upright, the 4th cutting face (12) and the 5th are cut
Bevel (13) is connected and is arranged in the second cutting cutter hub (7), is provided with chip curling groove (14) in the middle part of the 5th cutting face (13)；
Third cutting cutter hub (8) includes intilted 6th cutting face (15) and the 7th cutting face with central axis upright
(16), the 6th cutting face (15) is connected with the 7th cutting face (16) and is arranged in third cutting cutter hub (8) upper end, and described the
Chip curling groove (14) are provided at the separate central axis in seven cutting faces (16).
2. a kind of novel hollow drill bit as described in claim 1, it is characterised in that: the chip space (4) sets in cutting head (3)
There is the chip removal mouth (17) being connected with cylindrical cavity (5).
3. a kind of novel hollow drill bit as described in claim 1, it is characterised in that: the cutting cutter hub is hard alloy, institute
Cutting cutter hub is stated to be welded on cutting head (3).
4. a kind of novel hollow drill bit as described in claim 1, it is characterised in that: second cutting cutter hub (7), first cut
Sharpener body (6) and third cutting cutter hub (8) are arranged successively along clockwise direction.
5. a kind of novel hollow drill bit as described in claim 1, it is characterised in that: the quantity of the cutting cutter hub is 3,6
A, 9,12,15,18,21,24,27, one of 30 and 33.
6. a kind of novel hollow drill bit as described in claim 1, it is characterised in that: second cutting face (10) and third are cut
Angle between bevel (11) is for 120-170 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821439486.9U CN208811160U (en) | 2018-09-04 | 2018-09-04 | A kind of novel hollow drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821439486.9U CN208811160U (en) | 2018-09-04 | 2018-09-04 | A kind of novel hollow drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208811160U true CN208811160U (en) | 2019-05-03 |
Family
ID=66275730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821439486.9U Expired - Fee Related CN208811160U (en) | 2018-09-04 | 2018-09-04 | A kind of novel hollow drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208811160U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110919877A (en) * | 2019-12-24 | 2020-03-27 | 桂林创源金刚石有限公司 | High-speed high-efficient drill bit |
| CN116021069A (en) * | 2022-12-05 | 2023-04-28 | 扬州科迪机电制造有限公司 | Hollow multi-layer cutting edge divided hollow drill |
-
2018
- 2018-09-04 CN CN201821439486.9U patent/CN208811160U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110919877A (en) * | 2019-12-24 | 2020-03-27 | 桂林创源金刚石有限公司 | High-speed high-efficient drill bit |
| CN116021069A (en) * | 2022-12-05 | 2023-04-28 | 扬州科迪机电制造有限公司 | Hollow multi-layer cutting edge divided hollow drill |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190503 Termination date: 20200904 |
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| CF01 | Termination of patent right due to non-payment of annual fee |