CN206509564U - A kind of forming drill - Google Patents
A kind of forming drill Download PDFInfo
- Publication number
- CN206509564U CN206509564U CN201720146428.6U CN201720146428U CN206509564U CN 206509564 U CN206509564 U CN 206509564U CN 201720146428 U CN201720146428 U CN 201720146428U CN 206509564 U CN206509564 U CN 206509564U
- Authority
- CN
- China
- Prior art keywords
- cutting portion
- circular arc
- work department
- guide part
- taper
- 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.)
- Active
Links
Landscapes
- Drilling Tools (AREA)
Abstract
The utility model discloses a kind of forming drill, it is related to cutting-tool engineering field, including cylinder shank section and work department, the work department is provided with the helicla flute that helical angle is β, the work department includes taper cutting portion, circular arc cutting portion and guide part, and the circular arc cutting portion is arranged between taper cutting portion and guide part.Drilled using between the main cutting edge on the taper cutting portion of work department front end, the processing of hole lnner arced slot is completed using circular arc cutting portion, realize that clamped one time completes the processing of finished hole.Process can be simplified using the utility model, tool changing and sharpening number of times is reduced, not only reduce labor intensity, processing non-cutting time is also reduced, so as to improve operating efficiency；The axiality requirement in hole lnner arced slot and hole is ensure that simultaneously, crudy is improved, and the utility model is particularly suitable for use in production in enormous quantities.
Description
Technical field
The utility model is related to cutting-tool engineering field, more particularly to a kind of forming drill.
Background technology
The processing for being machined mesopore is most common one kind, and conventional fluted drill is made up of clamping part and work department, and work
It is straight sword to make portion.But many products need processing profiled hole at present, and it can not expire for the existing cutter of processing of irregularly-shaped hole
Foot is required, it is necessary to by multiple clamping, tool changing, whet a knife and could complete.This results in production cost rise, operating efficiency lowly,
And crudy is not easy to ensure.
Utility model content
Technical problem to be solved in the utility model is that there is provided a kind of operating efficiency for above-mentioned the deficiencies in the prior art
The good forming drill of high, crudy, can simplify process, reduce processing non-cutting time, and then reduce production cost.
In order to solve the above technical problems, technical solution adopted in the utility model is：
A kind of forming drill, including cylinder shank section and work department, the work department is provided with the spiral that helical angle is β
Groove, the work department includes taper cutting portion, circular arc cutting portion and guide part, and the circular arc cutting portion is arranged on taper cutting portion
Between guide part.
Preferably, the helicla flute is two and is symmetrical arranged, two main cutting edges of the taper cutting portion end
Angle α is 140 °；The radius of the radian of the circular arc cutting portion is R and the external cylindrical surface of lower end and guide part is tangent.
Preferably, the edge of helicla flute is provided with where the Zhou Ren of the main cutting edge of the taper cutting portion and circular arc cutting portion
Raised face of cylinder land, the central axis of the central axis and work department on the face of cylinder land and its rear portion transition face of cylinder
Overlap.
Preferably, the helixangleβ of the helicla flute is 35 °.
Preferably, the lower end diameter D1 of the taper cutting portion upper deviation is that 0, lower deviation is -0.01mm, the circular arc
Cutting portion is tangent with guide part, and the diameter D2 upper deviations of the guide part are that 0, lower deviation is -0.01mm, the shank section it is straight
The footpath D3 upper deviations are that -0.003, lower deviation is -0.015；The diameter D3 of the shank section is more than the diameter D2 of guide part.
Preferably, the shank section and work department are integral type structure.
It is using the beneficial effect produced by above-mentioned technical proposal：Cut using the master on the taper cutting portion of work department front end
Cut and drilled between sword, the processing of hole lnner arced slot is completed using circular arc cutting portion, realize clamped one time complete finished hole plus
Work.Process can be simplified using the utility model, tool changing and sharpening number of times is reduced, not only reduce labor intensity, also reduce
Non-cutting time is processed, so as to improve operating efficiency；The axiality requirement in hole lnner arced slot and hole is ensure that simultaneously, is improved and is added
Working medium amount, the utility model is particularly suitable for use in production in enormous quantities.
Brief description of the drawings
Fig. 1 is a kind of structural representation for forming drill that the utility model embodiment is provided；
Fig. 2 is the A direction views of Fig. 1 work departments；
In figure：1- shank sections, 2- work departments, 3- helicla flutes, 4- taper cutting portions, 5- circular arc cutting portions, 6- guide parts, 7-
Main cutting edge, 8- faces of cylinder land, the 9- transition face of cylinder.
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 specifically
Embodiment, is described in further detail to the utility model.It should be appreciated that specific embodiment described herein is only used to
The utility model is explained, is not used to limit the utility model.
A kind of forming drill that the utility model is provided, as shown in Figure 1, 2, including cylinder shank section 1 and work department 2,
The work department 2 is provided with the helicla flute 3 that helical angle is β, and the work department 2 includes taper cutting portion 4, circular arc cutting portion 5 and led
To portion 6, the circular arc cutting portion 5 is arranged between taper cutting portion 4 and guide part 6.Cut using taper cutting portion and circular arc
Portion completes drilling and the processing of hole lnner arced slot, realizes that clamped one time completes the processing of finished hole, improves processing efficiency.
As a kind of preferred structure, the helicla flute 3 is two and is symmetrical arranged, the two of the end of taper cutting portion 4
The angle α of individual main cutting edge 7 is 140 °；The radius of the radian of the circular arc cutting portion 5 is R and lower end and the outside cylinder of guide part 6
Face is tangent.Structure ensures that arc groove sector hole inner surface is excessively smooth whereby, it is ensured that crudy.
Further, the side of helicla flute 3 where the Zhou Ren of the main cutting edge 7 of the taper cutting portion 4 and circular arc cutting portion 5
The central axis and work department 2 on face of cylinder land 8 of the edge provided with projection, the face of cylinder land 8 and its rear portion transition face of cylinder 9
Central axis overlap.Bit operation portion and internal surface of hole there are two contact surfaces using raised face of cylinder land, lead to simultaneously
Improve the rigidity in process in the transition face of cylinder.
Wherein, the helixangleβ of the helicla flute 3 is 35 °.The drilling that this structure is more suitable on brass material adds
Work, because the performance of brass is softer than general steel, the phenomenon for knife occur is easy in drilling process, causes what is come outbreak out
Hole precision does not reach requirement, can be more beneficial for chip removal to ensure crudy after the helical angle for increasing helicla flute, although drill bit is firm
Degree declines, but is due to that brass material is soft, can't have a huge impact.
In order to improve the bulk strength of drill bit, the shank section 1 and work department 2 are integral type structure.
In a specific embodiment of the present utility model, the radius of the radian R of the circular arc cutting portion 5 is 12.13mm, institute
The length for stating circular arc cutting portion 5 is 6.8mm, D1 7.293mm of lower end diameter of the taper cutting portion 4, and the D1 upper deviation is
0th, lower deviation is -0.01mm, and the circular arc cutting portion 5 and guide part 6 are tangent, diameter D2 11.2mm, D2 of the guide part 6
The upper deviation be that 0, lower deviation is -0.01mm, the diameter D3 of the shank section 1 is 12mm, the D3 upper deviation is -0.003, it is lower partially
Difference is -0.015；The diameter D3 of the shank section 1 is more than the diameter D2 of guide part, is more convenient the clamping of shank section；The circular arc
The length L of the helicla flute 3 of cutting portion and guide part is 17mm, the length of circular arc cutting portion and guide part and be 20mm.Utilize
The forming drill of the structure come realize clamped one time complete middle part with arc groove irregularly-shaped hole processing.
In summary, the utility model has the advantages that simple in construction, easy to operate, with low cost, can reduce processing
Process, it is ensured that crudy, improves operating efficiency.The utility model is particularly suitable for use in the special-shaped hole machined of production in enormous quantities.
Specific case used herein is set forth to principle of the present utility model and embodiment, above example
Explanation be only intended to help and understand method of the present utility model and its core concept.It should be pointed out that for the art
For those of ordinary skill, on the premise of the utility model principle is not departed from, some change can also be carried out to the utility model
Enter and modify, these are improved and modification is also fallen into the utility model scope of the claims.
Claims (6)
1. a kind of forming drill, it is characterised in that：Including cylinder shank section（1）And work department（2）, the work department（2）If
There is the helicla flute that helical angle is β（3）, the work department（2）Including taper cutting portion（4）, circular arc cutting portion（5）And guide part
（6）, the circular arc cutting portion（5）It is arranged on taper cutting portion（4）With guide part（6）Between.
2. a kind of forming drill according to claim 1, it is characterised in that：The helicla flute（3）Set for two and symmetrically
Put, the taper cutting portion（4）Two main cutting edges of end（7）Angle α be 140 °；The circular arc cutting portion（5）Arc
It is R and lower end and guide part to spend radius（6）External cylindrical surface it is tangent.
3. a kind of forming drill according to claim 2, it is characterised in that：The taper cutting portion（4）Main cutting edge
（7）And circular arc cutting portion（5）Zhou Ren where helicla flute（3）Edge provided with raised face of cylinder land（8）, the face of cylinder
Land（8）And its rear portion transition face of cylinder（9）Central axis and work department（2）Central axis overlap.
4. a kind of forming drill according to claim 3, it is characterised in that：The helicla flute（3）Helixangleβ be 35 °.
5. a kind of forming drill according to claim 4, it is characterised in that：The taper cutting portion（4）Lower end diameter
The D1 upper deviation is that 0, lower deviation is -0.01mm, the circular arc cutting portion（5）With guide part（6）It is tangent, the guide part（6）
The diameter D2 upper deviations be 0, lower deviation be -0.01mm, the shank section（1）The diameter D3 upper deviations for -0.003, lower deviation
For -0.015；The shank section（1）Diameter D3 be more than guide part（6）Diameter D2.
6. a kind of forming drill according to claim 1, it is characterised in that：The shank section（1）And work department（2）For one
Body formula structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720146428.6U CN206509564U (en) | 2017-02-18 | 2017-02-18 | A kind of forming drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720146428.6U CN206509564U (en) | 2017-02-18 | 2017-02-18 | A kind of forming drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206509564U true CN206509564U (en) | 2017-09-22 |
Family
ID=59867712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720146428.6U Active CN206509564U (en) | 2017-02-18 | 2017-02-18 | A kind of forming drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206509564U (en) |
-
2017
- 2017-02-18 CN CN201720146428.6U patent/CN206509564U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202180241U (en) | Universal type multi-blade pointed drill | |
| CN105772809B (en) | A kind of manufacturing method of drill bit and drill bit | |
| CN201862827U (en) | Composite drilling and milling cutter | |
| CN204018808U (en) | A kind of drill bit for deep hole processing | |
| CN103658773A (en) | High-speed chamfering tool | |
| CN106424832A (en) | Drill bit drill tip with self-centering function | |
| CN202861476U (en) | High-efficiency high-precision deep hole drill | |
| CN203459781U (en) | Threaded knife blade with composite edge | |
| CN206509564U (en) | A kind of forming drill | |
| CN109128323A (en) | A kind of double helix side edge milling cutter towards composite material hole milling | |
| CN104227093A (en) | Drill point centering countersinking cutter | |
| CN206305513U (en) | Drill jig and drilling machine | |
| CN201552631U (en) | Four-blade four-helix solid center bit | |
| CN112091288B (en) | Lengthened twist drill for processing elongated hole | |
| CN206492963U (en) | A kind of double end centre drill | |
| CN2734391Y (en) | Single-blade reamer | |
| CN209110249U (en) | Hard alloy forms gouge bit | |
| CN203621580U (en) | High speed chamfering cutter | |
| CN106513791A (en) | Twist drill for machining stainless steel | |
| CN206200186U (en) | A kind of band makes the drill bit apex point of heart function by oneself | |
| CN206484073U (en) | A kind of taper milling cutter | |
| CN206492965U (en) | One kind shaping drilling reamer | |
| CN206484074U (en) | A kind of profile milling cutter | |
| CN204094216U (en) | Double end three sword hollow mjills | |
| CN204194894U (en) | A kind of platform reaming spiral bit continuously |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |