CN206567580U - A kind of intermetallic composite coating step drill - Google Patents
A kind of intermetallic composite coating step drill Download PDFInfo
- Publication number
- CN206567580U CN206567580U CN201720287452.1U CN201720287452U CN206567580U CN 206567580 U CN206567580 U CN 206567580U CN 201720287452 U CN201720287452 U CN 201720287452U CN 206567580 U CN206567580 U CN 206567580U
- Authority
- CN
- China
- Prior art keywords
- drill
- chip
- apex point
- breaker
- coating step
- Prior art date
- 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 - Fee Related
Links
- 239000011248 coating agent Substances 0.000 title claims abstract description 13
- 238000000576 coating method Methods 0.000 title claims abstract description 13
- 239000002131 composite material Substances 0.000 title claims abstract description 12
- CXOWYMLTGOFURZ-UHFFFAOYSA-N azanylidynechromium Chemical compound [Cr]#N CXOWYMLTGOFURZ-UHFFFAOYSA-N 0.000 claims description 8
- 238000005553 drilling Methods 0.000 abstract description 4
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000005034 decoration Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Landscapes
- Drilling Tools (AREA)
Abstract
The utility model discloses a kind of intermetallic composite coating step drill, including connected apex point, drill body body and drillstock, the drill body body is ladder circle cylinder, the cylinder cutting edge with multistage truncated cone-shaped cutting edge and different-diameter；The apex point offers arc groove in coniform, helical flute of apex point and the drill body body provided with one, the bottom land of the helical flute, and the apex point is provided with spiral auxiliary chip area；Chip-breaker is interval with the drill body body, the chip-breaker is parallel on the cylinder cutting edge.Arc groove can increase chip removal ability, helical flute is not easy to be squeezed stifled, improve the speed of drilling.Auxiliary chip area at apex point, adds chip resistance.
Description
Technical field
The utility model is related to a kind of intermetallic composite coating step drill.
Background technology
Step drill uses multi-stage stairs formula cutting edge, and both machinables go out the hole of different-diameter, again can be combined drilling, reaming
Machined into a feed.Therefore it is widely used in decoration, hardware, automobile and other industries.Existing step drill when in use one
As difficult, the defect that service life is not grown that there is chip removal.
Utility model content
The purpose of this utility model is to provide a kind of intermetallic composite coating step drill, and its chip removal is smooth, and service life is long.
To achieve the above object, the utility model uses following technical scheme：
A kind of intermetallic composite coating step drill, including connected apex point, drill body body and drillstock, the drill body body are ladder
Cylinder, the cylinder cutting edge with multistage truncated cone-shaped cutting edge and different-diameter；The apex point in coniform, the apex point and
Helical flute of the drill body body provided with one, the bottom land of the helical flute offers arc groove, and the apex point is set
There is spiral auxiliary chip area；Chip-breaker is interval with the drill body body, the chip-breaker is parallel to be located at the cylinder
On cutting edge.
Preferably, the quantity of the chip-breaker is two, is respectively arranged on leaning at apex point and by drillstock for the drill body body
Place.
Preferably, the depth of the chip-breaker is 3-5mm.
Preferably, apex point and the drill body body surface is plated with chromium nitride layer.
Preferably, the thickness of the chromium nitride layer is 0.1-0.2mm.
After adopting the above technical scheme, the utility model has the following advantages that：
1st, arc groove can increase chip removal ability, helical flute is not easy to be squeezed stifled, improve the speed of drilling.Bore
Auxiliary chip area at point, adds chip resistance.
2nd, chip-breaker is interval with drill body body, the chip for cutting generation can be cut into segment, effectively block metal
The splashing of bits, and make chip not to be wound on drill body, it is to avoid damage of the chip to drill body.
3rd, apex point and drill body body surface are plated with chromium nitride layer, effectively improve hardness, wearability and inoxidizability, extension
Service life, improves operating efficiency.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Reference numeral explanation:
Apex point 1, auxiliary chip area 11, drill body body 2, cylinder cutting edge 21, truncated cone-shaped cutting edge 22, chip-breaker 23, spiral shell
Revolve chip area 24, arc groove 25, drillstock 3.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation
Example, the utility model is further elaborated.It should be appreciated that specific embodiment described herein is only to explain
The utility model, is not used to limit the utility model.
With reference to Fig. 1, the utility model discloses a kind of intermetallic composite coating step drill, including apex point 1, the drill body body being connected
2 and drillstock 3, drill body body 2 is ladder circle cylinder, the cylinder cutting edge with multistage truncated cone-shaped cutting edge 22 and different-diameter
21。
Apex point 1 is in coniform, the helical flute 24 of apex point 1 and drill body body 2 provided with one, helical flute 24
Bottom land offers arc groove 25, and the setting of arc groove 25 can increase chip removal ability, make helical flute 24 be not easy to be squeezed
It is stifled, improve the speed of drilling.
Apex point 1 adds chip resistance provided with spiral auxiliary chip area 11.
Chip-breaker 23 is interval with drill body body 2, chip-breaker 23 is parallel on cylinder cutting edge 21, the present embodiment
In, the quantity of chip-breaker 23 is two, is respectively arranged on leaning at apex point 1 and by drillstock 3 for drill body body 2, the depth of chip-breaker 23
Spend for 3-5mm.The chip for cutting generation can be cut into segment by chip-breaker 23, effectively block the splashing of metal fillings, and make to cut
Bits will not be wound on drill body, it is to avoid damage of the chip to drill body.
Apex point 1 and the coating surface of drill body body 2 have chromium nitride layer.The thickness of chromium nitride layer is 0.1-0.2mm.Chromium nitride layer
Hardness, wearability and inoxidizability are effectively improved, service life is extended, operating efficiency is improved.
More than, only the utility model preferably embodiment, but protection domain of the present utility model do not limit to
In this, any one skilled in the art is in the technical scope that the utility model is disclosed, the change that can be readily occurred in
Change or replace, should all cover within protection domain of the present utility model.Therefore, protection domain of the present utility model should be with power
The protection domain that profit is required is defined.
Claims (5)
1. a kind of intermetallic composite coating step drill, including connected apex point, drill body body and drillstock, it is characterised in that：The drill body
Body is ladder circle cylinder, the cylinder cutting edge with multistage truncated cone-shaped cutting edge and different-diameter；The apex point in coniform,
Helical flute of apex point and the drill body body provided with one, the bottom land of the helical flute offers arc groove,
The apex point is provided with spiral auxiliary chip area；Chip-breaker is interval with the drill body body, the chip-breaker is parallel to be set
In on the cylinder cutting edge.
2. a kind of intermetallic composite coating step drill as claimed in claim 1, it is characterised in that：The quantity of the chip-breaker is two
Bar, is respectively arranged on leaning at apex point and by drillstock for the drill body body.
3. a kind of intermetallic composite coating step drill as claimed in claim 2, it is characterised in that：The depth of the chip-breaker is 3-
5mm。
4. a kind of intermetallic composite coating step drill as described in claim 1,2 or 3, it is characterised in that：Apex point and the drill body sheet
Body surface face is plated with chromium nitride layer.
5. a kind of intermetallic composite coating step drill as claimed in claim 4, it is characterised in that：The thickness of the chromium nitride layer is
0.1-0.2mm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720287452.1U CN206567580U (en) | 2017-03-23 | 2017-03-23 | A kind of intermetallic composite coating step drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720287452.1U CN206567580U (en) | 2017-03-23 | 2017-03-23 | A kind of intermetallic composite coating step drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206567580U true CN206567580U (en) | 2017-10-20 |
Family
ID=60055986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720287452.1U Expired - Fee Related CN206567580U (en) | 2017-03-23 | 2017-03-23 | A kind of intermetallic composite coating step drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206567580U (en) |
-
2017
- 2017-03-23 CN CN201720287452.1U patent/CN206567580U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171020 |