CN208341821U - A kind of ladder drill - Google Patents
A kind of ladder drill Download PDFInfo
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- CN208341821U CN208341821U CN201820726071.3U CN201820726071U CN208341821U CN 208341821 U CN208341821 U CN 208341821U CN 201820726071 U CN201820726071 U CN 201820726071U CN 208341821 U CN208341821 U CN 208341821U
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- single order
- ladder
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Abstract
The utility model discloses a kind of ladder drills, for molding cutter field, including single order drill body and second order drill body, single order drill body is located at the front end of second order drill body, the pivot center of single order drill body and second order drill body is overlapped, the front end of single order drill body is equipped with single order cutting edge, the front end of second order drill body is equipped with second order cutting edge, the radius of clean-up of single order cutting edge is less than the radius of clean-up of second order cutting edge, second order cutting edge includes symmetrical a pair of of main cutting edge and symmetrical a pair of of end cutting edge, main cutting edge and end cutting edge are alternately spaced apart in the turning circumference of second order drill body.At least a pair of of main cutting edge and a pair of of end cutting edge are set on second order drill body, it is by increasing blade quantity, guarantee when processing incomplete round hole there is more multi-blade to cut, decompose the unbalance stress problem in process, avoids the step generated by vibration and vibration knife.And polishing operation can be saved, reduce labor intensity and cost of labor；Guarantee quality cost.
Description
Technical field
The utility model is used for molding cutter field, more particularly to a kind of ladder drill.
Background technique
During the machine-shaping of stepped hole, in order to improve shaping efficiency and concentricity, generally using subland drill at
Type.Such as in automotive hub industry, the bolt hole of automotive hub is using stepped hole as bolt hole.For certain SUV vehicles
Wheel hub, since its product center pore size is larger, it is incomplete that this causes the outer side steps section of the bolt hole around centre bore to be formed
When processing above-mentioned bolt hole using existing drill bit, there is vibration knife, step open defect in circular configuration, after bolt hole is drilled,
Setting polishing operation is also needed, carries out reconditioning using bistrique, the presentation quality after guaranteeing coating.This makes the prior art, and there are following
It is insufficient: 1, to increase polishing operation, increase labor intensity and cost of labor；2, the dust that polishing generates influences site environment and employee
Health；3, after polishing, also 9% do over again influences quality cost.
Utility model content
The purpose of this utility model is to provide a kind of ladder drills to guarantee processing by increasing blade quantity
When incomplete round hole there is two panels blade to cut, decompose the unbalance stress problem in process, avoids generating because of vibration
Step and vibration knife.
The technical scheme adopted by the utility model to solve the technical problem is as follows: a kind of ladder drill, including single order bore
Body and second order drill body, single order drill body are located at the front end of second order drill body, the pivot center coincidence of single order drill body and second order drill body, single order
The front end of drill body is equipped with single order cutting edge, and the front end of second order drill body is equipped with second order cutting edge, and the radius of clean-up of single order cutting edge is small
In the radius of clean-up of second order cutting edge, second order cutting edge includes that symmetrical a pair of of main cutting edge and symmetrical a pair are secondary
Cutting edge, main cutting edge and end cutting edge are alternately spaced apart in the turning circumference of second order drill body.
It is further used as the improvement of technical solutions of the utility model, the front end of single order drill body has tapered end face, and single order bores
Body is equipped with symmetrical a pair of of single order cutting edge on tapered end face.
It is further used as the improvement of technical solutions of the utility model, the front end of single order drill body is equipped with to be rotated across single order drill body
First card slot of axis, single order bite is inlayed in the first card slot, and single order bite forms symmetrical point in the two sides of pivot center
A pair of of single order cutting edge of cloth, two single order cutting edges form obtuse angle angle in the front end of single order bite.
The improvement of technical solutions of the utility model is further used as, in each single order cutting edge rotation direction on single order drill body
Front side is equipped with single order flute, is equipped with second order flute in the front side of each second order cutting edge rotation direction on second order drill body.
It is further used as the improvement of technical solutions of the utility model, the second order on front side of single order flute and main cutting edge goes out to consider to be worth doing
Slot smooth connection.
It is further used as the improvement of technical solutions of the utility model, single order drill body and second order drill body are cylindrical, single order
Flute is provided in the shape of a spiral on the side wall of single order drill body, and second order flute is provided with the side wall of second order drill body in the shape of a spiral
On, the helix angle of single order flute and second order flute is 15 °~25 °.
It is further used as the improvement of technical solutions of the utility model, is equipped with second on the front end cell wall of each second order flute
Card slot, second order bite is inlayed in the second card slot, and second order bite includes forming the main cutting knife of main cutting edge and forming pair to cut
Cut the secondary bite of sword.
It is further used as the improvement of technical solutions of the utility model, second order cutting edge includes being located at second order drill body head face
End face blade and side blade positioned at second order drill body side, end face blade and side blade use round-corner transition.
It is further used as the improvement of technical solutions of the utility model, the end face blade of main cutting knife is extended to by side blade
Single order drill body, the end face blade of end cutting edge form stop before extending to single order drill body by side blade.
It is further used as the improvement of technical solutions of the utility model, further includes drillstock, torque is opened up on drillstock and applies face.
The utility model has the beneficial effects that at least a pair of of main cutting edge and a pair is arranged in the utility model on second order drill body
End cutting edge guarantees when processing incomplete round hole there is more multi-blade to cut, decomposes and add by increasing blade quantity
Unbalance stress problem during work avoids the step generated by vibration and vibration knife.And polishing operation can be saved, reduce labor
Fatigue resistance and cost of labor；It avoids influencing site environment and enterprise employee health, guarantees quality cost.
Detailed description of the invention
The utility model is described in further detail with reference to the accompanying drawing:
Fig. 1 is the utility model embodiment structure axonometric drawing；
Fig. 2 is the utility model embodiment structural front view；
Fig. 3 is the utility model embodiment structural side view.
Specific embodiment
Referring to figs. 1 to Fig. 3, that show the specific structures of the preferred embodiment of the utility model.It below will specifically
The design feature of bright each component of the utility model.
The utility model provides a kind of ladder drill, including single order drill body 1 and second order drill body 2, single order drill body 1 and two
Rank drill body 2 can be integrally formed or assemble or weld or be connected as one, and single order drill body 1 is located at the front end of second order drill body 2,
The pivot center of single order drill body 1 and second order drill body 2 is overlapped, and single order drill body 1 and second order drill body 2 can be driven by the driving force of rear end
Turn is dynamic, and the front end of single order drill body 1 is equipped with single order cutting edge, and the front end of second order drill body 2 is equipped with second order cutting edge, single order cutting edge
Radius of clean-up be less than the radius of clean-up of second order cutting edge, single order cutting edge for forming single order hole, second order cutting edge be used at
Type second order hole, in use, single order drill body 1 and second order drill body 2, under the action of the driving force of rear, rotation cutting, passes through one forward
Rank cutting edge and second order cutting edge once form stepped hole, and second order cutting edge includes symmetrical a pair of of main cutting edge and symmetrical
A pair of of end cutting edge of distribution, main cutting edge and end cutting edge are alternately spaced apart in the turning circumference of second order drill body 2.
At least a pair of of main cutting edge and a pair of of end cutting edge is arranged in the utility model on second order drill body 2, passes through increase
Blade quantity guarantees when processing incomplete round hole there is more multi-blade to cut, decomposes the unbalance stress in process
Problem avoids the step generated by vibration and vibration knife.And polishing operation can be saved, reduce labor intensity and cost of labor；
It avoids influencing site environment and enterprise employee health, guarantees quality cost.
The front end of single order drill body 1 has tapered end face, and one or more can be set on tapered end face and cut for single order drill body 1
Sword is cut, preferably, single order drill body 1 is equipped with symmetrical a pair of of single order cutting edge on tapered end face.
The front end of single order drill body 1 is equipped with the first card slot across 1 pivot center of single order drill body, inlays single order in the first card slot
Unlike material can be used in bite 3, single order drill body 1 and single order bite 3, and single order bite 3 is formed in the two sides of pivot center
Symmetrical a pair of of single order cutting edge, two single order cutting edges form obtuse angle angle in the front end of single order bite 3.
Be equipped with single order flute 4 in the front side of each single order cutting edge rotation direction on single order drill body 1, on second order drill body 2
The front side of each second order cutting edge rotation direction is equipped with second order flute 5.It can be incited somebody to action by single order flute 4 and second order flute 5
Cutting swarf discharge drilling.
Wherein, in order to simplify the structure of cutter, single order flute 4 and second order flute 5 on front side of main cutting edge are smooth right
It connects.
Polygon, special-shaped cross-section design can be used in single order drill body 1 and second order drill body 2, preferably, 1 He of single order drill body
Second order drill body 2 is cylindrical, and single order flute 4 is provided in the shape of a spiral on the side wall of single order drill body 1, and second order flute 5 is in
Helical form is provided on the side wall of second order drill body 2, and the helix angle of single order flute 4 and second order flute 5 is 15 °~25 °.Side
Just cutting swarf is automatically drained out in drill bit rotation process.
Wherein, it is equipped with the second card slot on the front end cell wall of each second order flute 5, second order cutting is inlayed in the second card slot
Knife, second order bite include the main cutting knife 6 to form main cutting edge and the secondary bite 7 for forming end cutting edge.
In order to further improve vibration knife effect, second order cutting edge includes the end face blade 10 positioned at 2 front end face of second order drill body
With the side blade 11 for being located at 2 side of second order drill body, end face blade 10 and side blade 11 use round-corner transition, main cutting knife 6
End face blade single order drill body 1 is extended to by side blade 11, the end face blade 10 of end cutting edge is extended to by side blade 11
Stop is formed before single order drill body 1.For example, the end face edge length of main cutting knife 6 is 18.2mm, the end face knife of secondary bite 7
Sword length is 4~7mm.
The installation of entire drill bit for convenience, further includes drillstock 8, and torque is opened up on drillstock 8 and applies face 9.Facilitate power
The torque of device is applied on drillstock 8.
Certainly, the invention is not limited to above embodiment, and those skilled in the art are without prejudice to originally
Equivalent deformation or replacement can be also made under the premise of utility model spirit, these equivalent variation or replacement are all contained in the application
In claim limited range.
Claims (10)
1. a kind of ladder drill, it is characterised in that: including single order drill body and second order drill body, single order drill body is located at second order drill body
The pivot center of front end, single order drill body and second order drill body is overlapped, and the front end of single order drill body is equipped with single order cutting edge, second order drill body
Front end is equipped with second order cutting edge, and the radius of clean-up of single order cutting edge is less than the radius of clean-up of second order cutting edge, second order cutting edge packet
Symmetrical a pair of of main cutting edge and symmetrical a pair of of end cutting edge are included, main cutting edge and end cutting edge are in second order drill body
Turning circumference on alternately be spaced apart.
2. ladder drill according to claim 1, it is characterised in that: the front end of single order drill body have tapered end face, one
Rank drill body is equipped with symmetrical a pair of of single order cutting edge on tapered end face.
3. ladder drill according to claim 2, it is characterised in that: the front end of single order drill body is equipped with across single order drill body
First card slot of pivot center, inlays single order bite in the first card slot, and single order bite is formed pair in the two sides of pivot center
Claim a pair of of single order cutting edge of distribution, two single order cutting edges form obtuse angle angle in the front end of single order bite.
4. ladder drill according to claim 2 or 3, it is characterised in that: turn on single order drill body in each single order cutting edge
The front side in dynamic direction is equipped with single order flute, is equipped with second order in the front side of each second order cutting edge rotation direction on second order drill body and goes out to consider to be worth doing
Slot.
5. ladder drill according to claim 4, it is characterised in that: the second order on front side of single order flute and main cutting edge
Flute smooth connection.
6. ladder drill according to claim 5, it is characterised in that: single order drill body and second order drill body are cylindrical,
Single order flute is provided in the shape of a spiral on the side wall of single order drill body, and second order flute is provided with the side of second order drill body in the shape of a spiral
On wall, the helix angle of single order flute and second order flute is 15 °~25 °.
7. ladder drill according to claim 4, it is characterised in that: be equipped on the front end cell wall of each second order flute
Second card slot inlays second order bite in the second card slot, and second order bite includes main cutting knife and the formation to form main cutting edge
The secondary bite of end cutting edge.
8. ladder drill according to claim 7, it is characterised in that: second order cutting edge includes being located at second order drill body head
The end face blade in face and side blade positioned at second order drill body side, end face blade and side blade use round-corner transition.
9. ladder drill according to claim 8, it is characterised in that: the end face blade of main cutting knife is prolonged by side blade
Single order drill body is extended to, the end face blade of end cutting edge forms stop before extending to single order drill body by side blade.
10. ladder drill according to claim 1, it is characterised in that: further include drillstock, torque application is opened up on drillstock
Face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820726071.3U CN208341821U (en) | 2018-05-15 | 2018-05-15 | A kind of ladder drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820726071.3U CN208341821U (en) | 2018-05-15 | 2018-05-15 | A kind of ladder drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208341821U true CN208341821U (en) | 2019-01-08 |
Family
ID=64889359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820726071.3U Active CN208341821U (en) | 2018-05-15 | 2018-05-15 | A kind of ladder drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208341821U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111809683A (en) * | 2020-07-24 | 2020-10-23 | 重庆交通大学 | Underwater reef cleaning equipment and fixing device thereof |
| CN113677463A (en) * | 2019-04-12 | 2021-11-19 | 玛波尔精密器具厂克雷斯博士公司 | Tool for machining workpieces |
-
2018
- 2018-05-15 CN CN201820726071.3U patent/CN208341821U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113677463A (en) * | 2019-04-12 | 2021-11-19 | 玛波尔精密器具厂克雷斯博士公司 | Tool for machining workpieces |
| CN111809683A (en) * | 2020-07-24 | 2020-10-23 | 重庆交通大学 | Underwater reef cleaning equipment and fixing device thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Stepped hole drill bit Effective date of registration: 20191106 Granted publication date: 20190108 Pledgee: Industrial Commercial Bank of China Ltd Guangzhou Xintang branch Pledgor: Guangzhou Wheelhorse Asahi Aluminum Casting Co., Ltd. Registration number: Y2019440000136 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |