CN206305515U - A kind of fluted drill of variable helix angle - Google Patents
A kind of fluted drill of variable helix angle Download PDFInfo
- Publication number
- CN206305515U CN206305515U CN201621462792.5U CN201621462792U CN206305515U CN 206305515 U CN206305515 U CN 206305515U CN 201621462792 U CN201621462792 U CN 201621462792U CN 206305515 U CN206305515 U CN 206305515U
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- China
- Prior art keywords
- chip area
- length
- fluted drill
- helical angle
- tip
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- 238000005553 drilling Methods 0.000 description 4
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 241000069344 Calycogonium Species 0.000 description 1
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- Drilling Tools (AREA)
Abstract
The utility model discloses a kind of fluted drill of variable helix angle, the helical angle of described fluted drill is tapered into by tip to the length of chip area 1/2, keeps constant by 1/2 length to the chip area tail end of chip area.The helical angle of fluted drill of the present utility model is gradual change, tapered into by tip to the length of chip area 1/2, keep constant by 1/2 length to the chip area tail end of chip area, the helical angle at tip is larger, the anterior angle of fluted drill is just larger, and drill bit is than sharp, and cutting speed is fast, the helical angle of rear end diminishes, chip paths traversed length diminishes, and chip removal speed is fast, suitably requires occasion faster used in cutting speed.
Description
Technical field
The utility model is related to a kind of fluted drill, more particularly to a kind of fluted drill of variable helix angle, belongs to a kind of machinery
Processing drilling tool.
Background technology
In machining, widely, so-called fluted drill is the rotation that axis is relatively fixed by it for the application of fluted drill
Turn cutting with the instrument of the circular hole of drilling workpiece.Gained the name because its chip pocket is similar to fried dough twist in the shape of a spiral.The application of fluted drill
Widely, fluted drill can be clamped on Handheld drill instrument manually, electrically or drilling machine, milling machine, lathe so add
Work is used on center.The performance of fluted drill has very big relation, the then anterior angle increase of increase helical angle, fiber crops with the size of its helical angle
Flower bores sharper, but the rigidity of drill bit can decline, and the speed of chip removal can be reduced, because helical angle is big, chip is wanted
The route of process is just more long, and chip removal speed is slow, and being not suitable for applying is needing the occasion of cutting speed faster.
Utility model content
The purpose of this utility model is to provide a kind of fluted drill of variable helix angle, to solve fluted drill of the prior art
It is not suitable for applying and is needing the problem of the occasion of cutting speed faster.
In order to realize the above object the utility model is adopted the following technical scheme that：A kind of fluted drill of variable helix angle, institute
The helical angle of the fluted drill stated tapers into by tip to the length of chip area 1/2, by 1/2 length of chip area to chip area
Tail end keeps constant.
The helical angle of described fluted drill gradually changes to 25 degree by tip to the length of chip area 1/2 by 35 degree, by chip removal
It is constant to 25 degree of chip area tail end holding at 1/2 length of groove.
The helical angle of fluted drill of the present utility model for gradual change, tapered into by tip to the length of chip area 1/2, by
Keep constant to chip area tail end at 1/2 length of chip area, the helical angle at tip is larger, the anterior angle of fluted drill is just larger, bores
Than sharp, cutting speed is fast, and the helical angle of rear end diminishes, and chip paths traversed length diminishes for head, and chip removal speed is fast, fits
It is preferably used for cutting speed requirement occasion faster.
The helical angle of fluted drill of the present utility model by tip to the length of chip area 1/2 gradually by 35 degree change to 25 degree,
1/2 length by chip area is constant to 25 degree of chip area tail end holding.The helical angle at tip is 35 degree, can ensure drill bit
On the premise of intensity, most sharp drilling tool is obtained, 25 degree of back segment helical angle holding is constant, can preferably ensure chip removal speed, can
Coordinate with cutting speed faster, it is ensured that chip removal speed can get caught up in cutting speed.
Brief description of the drawings
Fig. 1 is the overall structure diagram of the utility model embodiment.
Specific embodiment
A kind of embodiment of the fluted drill of variable helix angle, in Fig. 1, the tip of fluted drill 1 is front end, and shank end is tail
End.The helical angle of fluted drill 1 is tapered into by 1/2 length of leading portion to its chip area 2, that is, leading portion helical angle
Gradual change, the number of degrees of helical angle have gradually changed to 25 degree by 35 degree, and helical angle from 1/2 length of chip area 2 to emissions groove
Tail end no longer change, be always maintained at 25 degree it is constant.
In the present embodiment the helical angle of the leading portion of fluted drill due to 35 degree become for 25 degree, in other embodiments,
The technical staff in field can as needed select the constant interval of helical angle, such as 30 degree to 20 degree changes.
The drill body part of the drillstock part of the back segment of the fluted drill in the present embodiment and the setting cutting edge of leading portion is to separate
, such drillstock part can use relatively cheap steel alloy, and cross section is convexly equipped with the rear end face of drill body part for cross
The projection of shape, offered on the leading portion end face of drillstock part two two ends each extend to drillstock outer peripheral face right-angled intersection it is recessed
Groove, in groove, the periphery elastic conjunction that drill shank sets up the part for putting groove separately has drillstock part and brill the identical inserting of projection
Body portion is fixed sleeve 3 together.
In the present embodiment, the transition of the helical angle of fluted drill have selected tip and arrive at 1/2 length of chip area, at it
Other length can also be selected in his embodiment, such as, tip to chip area 1/3 length at, or chip area 2/3 length
Place etc..
Claims (2)
1. a kind of fluted drill of variable helix angle, it is characterised in that：The helical angle of described fluted drill is by tip to chip area 1/2
Tapered at length, keep constant by 1/2 length to the chip area tail end of chip area.
2. the fluted drill of variable helix angle according to claim 1, it is characterised in that：The helical angle of described fluted drill by
Gradually 25 degree are changed at tip to the length of chip area 1/2 by 35 degree, keep 25 by 1/2 length to the chip area tail end of chip area
Degree is constant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621462792.5U CN206305515U (en) | 2016-12-29 | 2016-12-29 | A kind of fluted drill of variable helix angle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621462792.5U CN206305515U (en) | 2016-12-29 | 2016-12-29 | A kind of fluted drill of variable helix angle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206305515U true CN206305515U (en) | 2017-07-07 |
Family
ID=59248724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621462792.5U Active CN206305515U (en) | 2016-12-29 | 2016-12-29 | A kind of fluted drill of variable helix angle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206305515U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108161081A (en) * | 2018-01-19 | 2018-06-15 | 苏州阿诺精密切削技术有限公司 | For the drill bit to the metal works Drilling operation with cementation zone |
| WO2019047433A1 (en) * | 2017-09-08 | 2019-03-14 | 浙江欣兴工具有限公司 | Rotary cutting tool with replaceable bit and rotary cutting method thereof, and bit installation method |
-
2016
- 2016-12-29 CN CN201621462792.5U patent/CN206305515U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019047433A1 (en) * | 2017-09-08 | 2019-03-14 | 浙江欣兴工具有限公司 | Rotary cutting tool with replaceable bit and rotary cutting method thereof, and bit installation method |
| US10888933B2 (en) | 2017-09-08 | 2021-01-12 | Zhejiang Xinxing Tools Co., Ltd. | Tool bit replaceable rotary cutting tool and rotary cutting method and tool bit mounting method thereof |
| CN108161081A (en) * | 2018-01-19 | 2018-06-15 | 苏州阿诺精密切削技术有限公司 | For the drill bit to the metal works Drilling operation with cementation zone |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: No.8, Dongqiang Road, Xindong industrial cluster, Xinxiang City, Henan Province Patentee after: Henan Heyi Precision Tools Co.,Ltd. Country or region after: China Address before: No.8, Dongqiang Road, Xindong industrial cluster, Xinxiang City, Henan Province Patentee before: HENAN YIGONG DRILLING INDUSTRY CO.,LTD. Country or region before: China |
|
| CP03 | Change of name, title or address |