CN208929284U - Interior cold cone bottom Powerful drill - Google Patents
Interior cold cone bottom Powerful drill Download PDFInfo
- Publication number
- CN208929284U CN208929284U CN201821209901.1U CN201821209901U CN208929284U CN 208929284 U CN208929284 U CN 208929284U CN 201821209901 U CN201821209901 U CN 201821209901U CN 208929284 U CN208929284 U CN 208929284U
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- drill bit
- drill
- apex point
- sword
- relief angle
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Abstract
Cold cone bottom Powerful drill in one kind, including shank, drill body and apex point, three is from rear to preceding integrated molding；If being equipped with chip space between two-edged valve there are two sword valve；It is formed with both ends sword on apex point, is formed with Zhou Ren on two-edged valve；The cutting edge of apex point and the junction of chip space are equipped with plane, and plane corresponds to the outer rim of apex point front end face with its length direction；The chisel edge of chip space and apex point passes through surface blending；The helix angle of drill bit is 25 ~ 35 °, and drill bit is double relief angle designs.The utility model uses interior cold design, drill bit generated cutting heat in processing can be significantly excluded, to improve the bit cutting service life.The utility model is using double relief angle designs, and the second relief angle is greater than the first relief angle, and drill bit flank and bottom hole gap are larger, is substantially reduced the load of drill bit work in-process lathe.The utility model cutting edge is designed using facet, can be significantly improved cutting edge and be resisted collapsing property and wearability.
Description
Technical field
The utility model relates to a kind of cutters of machining, and in particular to it is a kind of for drilling in mining tool in
Cold cone bottom Powerful drill, the Powerful drill belong to one kind of fluted drill.
Background technique
Mining machinery producer needs first for the embedded alloy tooth on mining tool (such as gear wheel or bore bit) in mining tool
Upper drilling, then carbide button is inlayed in hole by (compacting) by special purpose machine tool and fixture.Usually in drilling according to hole Bottom Shape
Difference can be divided into flat-bottom hole and cone bottom outlet, but this drilling operating difficulty is very big, and main cause includes following several respects:
One, machined material hardness is high.The material of gear wheel and bore bit generallys use high rigidity carbon steel or steel alloy, hardness model
It encloses and reaches HRC40-48, lathe load is larger when processing is easy to damage lathe；
Two, drill bit cutting edge is not easy to radiate when drilling, and causes cutting edge quick abrasion, cutter life poor；
Three, the size in hole requires high.The ontology of carbide button and gear wheel or bore bit is interference fit, so hole wall finish Ra
It must not exceed 1.6, hole tolerance must not exceed 0.02mm, there is not allowed that positive cone, difficulty of processing is very big in aperture to bottom hole, general to bore
It is difficult to reach requirements above after head drilling, can only not only improve cost using the manufacturing procedure cut with scissors after subdrilling and reduce and add
Work efficiency rate.
Therefore, above-mentioned the shortcomings of the prior art how is solved, is become as the class to be researched and solved of the utility model
Topic.
Summary of the invention
The purpose of this utility model is to provide cone cold in one kind bottom Powerful drills.
In order to achieve the above objectives, the technical solution adopted in the utility model is:
Cold cone bottom Powerful drill in one kind, including shank, drill body and apex point, the apex point are located at the front end of the drill body,
The shank is located at the rear end of drill body, is integrally formed；Length direction on the apex point and the drill body along drill bit is equipped with
Two sword valves, and the two sword valves are arranged along the border of the drill bit in the shape of a spiral, and offer chip space between two-edged valve；
Both ends sword is formed on the apex point, the two sword valves have been respectively formed on Zhou Ren, and the end sword corresponds phase with all swords
Even；
The junction of the cutting edge of the apex point and the chip space is equipped with a plane, and the plane has a length, and with
Its length direction corresponds to the outer rim setting of the apex point front end face；
The chisel edge of the chip space and the apex point passes through a surface blending；
The helix angle of the drill bit is 25 ~ 35 °；The drill bit is double relief angle designs, to increase the drill bit
The bottom hole gap of flank and processed hole.
Related content in above-mentioned technical proposal is explained as follows:
1. in above scheme, the cutting edge of the apex point specifically includes chisel edge, end sword and the arc transition for holding sword and Zhou Ren
Part.
2. in above scheme, by the design of the plane, the cutting edge of drill bit can be made straight, increase anti-the collapsing property of cutting edge.
3. in above scheme, " chisel edge of the chip space and the apex point passes through a surface blending " is designed, whereby to subtract
Small linear stress is concentrated, and the wearability at inner edge is increased, and that improves at inner edge anti-collapses performance.
4. in above scheme, by the design of double relief angles, and the second relief angle is greater than the first relief angle, and then can be in drilling
Drilling load is reduced, in the process so as to improve the lathe load in drilling process.
5. in above scheme, the junction of the end sword and the Zhou Ren are arc transition, to increase the wearability of apex point.
6. further including cold hole at least one, the water outlet in the interior cold hole is located at the front end of the apex point, interior in above scheme
The water inlet in cold hole is located at the shank.There are two the interior cold Kong Keshe, the water outlet center symmetric setting in cold hole in two；?
When drilling works, circulation has refrigeration working medium in the interior cold hole, the drilling heat generated in drill bit drilling process can be taken away, for giving
The apex point and drill body cooling, increase cutter life with this；The pressure energy of cold water outlet makes scrap be easier to be discharged in simultaneously, with
This improves drilling speed.
7. in above scheme, " helix angle of the drill bit is 25 ~ 35 ° ", by using the design of large helix angle, energy
Make drill bit that iron filings be discharged more smoothly in drilling processing.Existing cone bottom powerful drill on the market generally uses 10 ~ 15 ° of spirals
Angle design, if large helix angle can not be used, otherwise will lead to the problem of being difficult to chip removal, and process the essence in hole since structure limits
Degree not can guarantee；
The utility model passes through " junction of the cutting edge of the apex point and the chip space is equipped with a plane ", " end
The junction of sword and the Zhou Ren are arc transition " and the specific combination in " cold hole at least one " design so that large helix angle
Use be possibly realized.
8. in above scheme, the angle of the helical angle of the drill bit is preferred with 30 °.
9. in above scheme, the positive cone that the drill core taper of the drill body is 0 ~ 2 ° is designed, the rigid of drill bit entirety is increased with this
Property, drill bit can be made to realize drill for high-speed, and then improve processing efficiency, and be preferred with 0.5 °.
The working principle and advantage of the utility model are as follows:
Cold cone bottom Powerful drill in the utility model one kind, including shank, drill body and apex point, three from rear to preceding one at
Type；If being equipped with chip space between two-edged valve there are two sword valve；It is formed with both ends sword on apex point, is formed with Zhou Ren on two-edged valve；
The cutting edge of apex point and the junction of chip space are equipped with plane, and plane corresponds to the outer of apex point front end face with its length direction
Edge；The chisel edge of chip space and apex point passes through surface blending；The helix angle of drill bit is 25 ~ 35 °, and drill bit is that double relief angles are set
Meter.
Compared to existing technologies, as follows the advantages of the utility model:
1, cone bottom Powerful drill currently on the market all uses outer cold design；The utility model uses interior cold design, can show
It writes and excludes drill bit generated cutting heat in processing, to improve the bit cutting service life.
2, cone bottom Powerful drill cutting edge currently on the market is caused between drill bit flank and bottom hole all using single relief angle design
Gap is smaller, and causing drill bit, lathe load is larger during the cutting process；The utility model is using double relief angle designs, and the second relief angle is big
In the first relief angle, drill bit flank and bottom hole gap are larger, are substantially reduced the load of drill bit work in-process lathe.
3, cone bottom Powerful drill cutting edge at present on the market uses designed arc-shaped appearance；The utility model cutting edge is set using facet
Meter can significantly improve cutting edge and resist collapsing property and wearability.
Detailed description of the invention
Attached drawing 1 is the structural schematic diagram one of the utility model embodiment；
Attached drawing 2 is enlarged drawing at A in Fig. 1；
Attached drawing 3 is the structural schematic diagram two of the utility model embodiment；
Attached drawing 4 is the structural schematic diagram three of the utility model embodiment.
In the figures above: 1. shanks；2. drill body；3. apex point；4. sword valve；5. chip space；6. end sword；7. week sword；8. plane；
9. chisel edge；10. arc transition；11. surface blending；12. at inner edge；13. the second relief angle；14. the first relief angle；Cold hole in 15.；α
Helical angle.
Specific embodiment
The utility model is further described with reference to the accompanying drawings and embodiments:
Embodiment: referring to shown in attached drawing 1 ~ 4, cold cone bottom Powerful drill in one kind, including shank 1, drill body 2 and apex point 3, institute
The front end that apex point 3 is located at the drill body 2 is stated, the shank 1 is located at the rear end of drill body 2, is integrally formed.
Length direction on the apex point 3 and the drill body 2 along drill bit is set there are two sword valve 4, and the two sword valves 4 are in
Helical form is arranged along the border of the drill bit, and chip space 5 is offered between two-edged valve 4；Both ends sword is formed on the apex point 3
6, the two sword valves 4 have been respectively formed on all swords 7, and the end sword 6 is connected with all one-to-one correspondence of sword 7.
The junction of the cutting edge of the apex point 3 and the chip space 5 is equipped with a plane 8, and the plane 8 has a length,
And the outer rim setting of 3 front end face of apex point is corresponded to its length direction；By the design of the plane 8, the sword of drill bit can be made
Mouth is straight, increases anti-the collapsing property of cutting edge.The cutting edge of the apex point specifically includes chisel edge 9, end sword 6 and the circle for holding sword 6 and all swords 7
10 part of arc transition.
The junction of the end sword 6 and all swords 7 is arc transition 10(dome arc), to increase the wearability of apex point 3.
The chisel edge 9 of the chip space 5 and the apex point 3 passes through a surface blending 11(concave arc)；It designs whereby, to reduce
Linear stress is concentrated, and increases by inner edge 12 wearability, is improved at inner edge 12 anti-and is collapsed performance.
The drill bit is double relief angle designs, and the second relief angle 13 is greater than the first relief angle 14, after increasing the drill bit
The bottom hole gap of knife face and processed hole.By the design of double relief angles, and then drilling load can be reduced in drilling process,
So as to improve the lathe load in drilling process.
It further include cold hole 15 in two, the water outlet in interior cold hole 15 is located at the front end of the apex point 3, the water outlet in cold hole 15 in two
Mouth center symmetric setting；The water inlet in interior cold hole 15 is located at the shank 1.In drilling work, circulate in the interior cold hole 15
There is refrigeration working medium, the drilling heat generated in drill bit drilling process can be taken away, for cooling down to the apex point 3 and the drill body 2, with
This increases cutter life；The pressure energy of cold water outlet makes scrap be easier to be discharged in simultaneously, so as to improve drilling speed.
The pitch angle alpha angle of the drill bit is 25 ~ 35 °, is preferred with 30 °.By using the design of large helix angle, can make to bore
Iron filings are discharged more smoothly in drilling processing in head.Existing cone bottom powerful drill on the market generally uses 10 ~ 15 ° of helical angles to set
Meter, if large helix angle can not be used, otherwise will lead to the problem of being difficult to chip removal since structure limits, and process the precision in hole without
Method guarantees；And this case is set by the specific combination of " plane 8 ", " arc transition 10 " and " the interior cold hole 15 "
Meter, make it possible large helix angle use.
Wherein, the positive cone that the drill core taper of the drill body 2 is 0 ~ 2 ° designs, and is preferred with 0.5 °, and it is whole to increase drill bit with this
The rigidity of body can make drill bit realize drill for high-speed, and then improve processing efficiency.
Compared to existing technologies, as follows the advantages of the utility model:
1, cone bottom Powerful drill currently on the market all uses outer cold design；The utility model uses interior cold design, can show
It writes and excludes drill bit generated cutting heat in processing, to improve the bit cutting service life.
2, cone bottom Powerful drill cutting edge currently on the market is caused between drill bit flank and bottom hole all using single relief angle design
Gap is smaller, and causing drill bit, lathe load is larger during the cutting process；The utility model is using double relief angle designs, and the second relief angle is big
In the first relief angle, drill bit flank and bottom hole gap are larger, are substantially reduced the load of drill bit work in-process lathe.
3, cone bottom Powerful drill cutting edge at present on the market uses designed arc-shaped appearance；The utility model cutting edge is set using facet
Meter can significantly improve cutting edge and resist collapsing property and wearability.
The above embodiments are only for explaining the technical ideas and features of the present invention, and its object is to allow be familiar with technique
Personage can understand the content of the utility model and implement accordingly, do not limit the protection scope of the present invention.
All equivalent change or modifications according to made by the spirit of the present invention essence, should all cover the protection scope of the utility model it
It is interior.
Claims (6)
1. cold cone bottom Powerful drill in one kind, including shank, drill body and apex point, the apex point is located at the front end of the drill body, institute
The rear end that shank is located at drill body is stated, is integrally formed；Two are equipped with along the length direction of drill bit on the apex point and the drill body
A sword valve, and the two sword valves are arranged along the border of the drill bit in the shape of a spiral, and offer chip space between two-edged valve；Institute
It states and is formed with both ends sword on apex point, the two sword valves have been respectively formed on Zhou Ren, and the end sword is connected with all sword one-to-one correspondence；
It is characterized by:
The junction of the cutting edge of the apex point and the chip space is equipped with a plane, and the plane has a length, and with its length
Degree direction corresponds to the outer rim setting of the apex point front end face；
The chisel edge of the chip space and the apex point passes through a surface blending；The helix angle of the drill bit is 25 ~ 35 °；
The drill bit is double relief angle designs, and the second relief angle is greater than the first relief angle.
2. drill bit according to claim 1, it is characterised in that: the junction of the end sword and the Zhou Ren are circular arc mistake
It crosses.
3. drill bit according to claim 1, it is characterised in that: further include cold hole at least one, the water outlet in the interior cold hole
Positioned at the front end of the apex point, the water inlet in interior cold hole is located at the shank.
4. drill bit according to claim 1, it is characterised in that: the angle of the helical angle of the drill bit is 30 °.
5. drill bit according to claim 1, it is characterised in that: the positive cone that the drill core taper of the drill body is 0 ~ 2 ° designs.
6. drill bit according to claim 5, it is characterised in that: the positive cone that the drill core taper of the drill body is 0.5 ° designs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821209901.1U CN208929284U (en) | 2018-07-27 | 2018-07-27 | Interior cold cone bottom Powerful drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821209901.1U CN208929284U (en) | 2018-07-27 | 2018-07-27 | Interior cold cone bottom Powerful drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208929284U true CN208929284U (en) | 2019-06-04 |
Family
ID=66716771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821209901.1U Active CN208929284U (en) | 2018-07-27 | 2018-07-27 | Interior cold cone bottom Powerful drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208929284U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114178592A (en) * | 2021-12-16 | 2022-03-15 | 铣立(上海)切削技术有限公司 | Universal drill bit |
-
2018
- 2018-07-27 CN CN201821209901.1U patent/CN208929284U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114178592A (en) * | 2021-12-16 | 2022-03-15 | 铣立(上海)切削技术有限公司 | Universal drill bit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210120 Address after: 215000 136 aigehao Road, Weitang Town, Xiangcheng District, Suzhou City, Jiangsu Province Patentee after: D&M (SUZHOU) PRECISION CUTTING TOOLS Co.,Ltd. Address before: No.6 Weiting Weixi Road, Suzhou Industrial Park, Jiangsu Province Patentee before: SUZHOU CMK PRECISION CUTTING TOOL Co.,Ltd. |
|
| TR01 | Transfer of patent right |