CN204934689U - Side set cutting drill head - Google Patents
Side set cutting drill head Download PDFInfo
- Publication number
- CN204934689U CN204934689U CN201520712295.5U CN201520712295U CN204934689U CN 204934689 U CN204934689 U CN 204934689U CN 201520712295 U CN201520712295 U CN 201520712295U CN 204934689 U CN204934689 U CN 204934689U
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- side set
- helicla flute
- screw groove
- principal screw
- main body
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Abstract
The utility model is applicable to bit technique field, provide a kind of side set cutting drill head, comprise drill main body, described drill main body has principal screw groove, the side of described principal screw groove is cutting edge, and the side that described drill main body corresponds to described principal screw groove is provided with side set helicla flute, and described principal screw groove is provided with at least one, described side set helicla flute is arranged at the edge of described principal screw groove, and the described side set helicla flute degree of depth is greater than or equal to the thick size of core of drill main body.Side set cutting drill head provided by the utility model, the side that drill main body described in it corresponds to described principal screw groove is provided with side set helicla flute, do not reducing the space adding chip removal under the thick prerequisite of core, drill body rigidity can not weaken, thus ensure bore position precision, its borehole accuracy and chip discharge can meet instructions for use simultaneously, and result of use is good.
Description
Technical field
The utility model belongs to bit technique field, particularly relates to a kind of side set cutting drill head.
Background technology
At present, in order to comply with the multifunction of the downstream electronic consumer goods such as smart mobile phone, panel computer, motherboard, digital product, liquid crystal display, miniaturization, lightweight, the requirement of high density and high reliability and development trend, the requirement of electronic system of future generation to PCB is high density, high integrated, encapsulation, miniaturization, multiple stratification.Main growth factor will be become with PCB kinds such as high density interconnecting board (HDI), flexible board (FPC), IC package board (BGA, CSP).This makes the diameter needing machining be less than the ultra tiny flow hole number of 0.2mmPCB sharply increases.Small diameter drill bit of the prior art, in order to ensure that chip discharge is smooth and easy, needs the space increasing chip area, thus the core that can reduce drill bit is thick, after the thick reduction of core, drill body reduced stiffness, bore position precision will reduce, and its borehole accuracy and chip discharge are difficult to meet instructions for use simultaneously.
This proposes new requirement to micro-brill structural design: should ensure that chip discharge is smooth and easy, ensure high bore position precision again.
Utility model content
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, and provide a kind of side set cutting drill head, it both ensure that chip discharge was smooth and easy, in turn ensure that high bore position precision, and borehole accuracy and chip discharge can meet instructions for use simultaneously.
The utility model is achieved in that a kind of side set cutting drill head, comprise drill main body, described drill main body has principal screw groove, the side of described principal screw groove is cutting edge, the side that described drill main body corresponds to described principal screw groove is provided with side set helicla flute, described principal screw groove is provided with at least one, and described side set helicla flute is arranged at the edge of described principal screw groove, and the described side set helicla flute degree of depth is greater than or equal to the thick size of core of drill main body.
Alternatively, described cutting edge is divided into parallel two sections by described side set helicla flute.
Alternatively, described side set helicla flute width is less than 0.5 times of sword lobe width.
Alternatively, described side set helicla flute width is greater than 0.5 times of sword lobe width.
Alternatively, the front end of described drill main body is provided with taper surface.
Alternatively, the diameter of described drill bit is less than 0.2 millimeter.
Alternatively, described cutting edge is divided into two sections by described side set helicla flute, and is arc transition between parallel cutting edge.
Alternatively, after described side set helicla flute incision principal screw groove and form line of demarcation between principal screw groove.
Alternatively, described side set helicla flute is less than or equal to principal screw flute length.
Alternatively, described side set helicla flute is parallel or crossing with principal screw groove.
Side set cutting drill head provided by the utility model, the side that drill main body described in it corresponds to described principal screw groove is provided with side set helicla flute, described cutting edge is divided into parallel two sections by side set helicla flute, do not reducing the space adding chip removal under the thick prerequisite of core, drill body rigidity can not weaken, thus ensureing bore position precision, its borehole accuracy and chip discharge can meet instructions for use simultaneously, and result of use is good.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, be briefly described to the accompanying drawing used required in embodiment below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 be the utility model embodiment provide the head chip removal of side set cutting drill time schematic perspective view;
Fig. 2 is the floor map of the side set cutting drill head that the utility model embodiment provides.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
It should be noted that, when element is called as " being fixed on " or " being arranged at " another element, it can directly on another element or may there is centering elements simultaneously.When an element is known as " being connected to " another element, it can be directly connected to another element or may there is centering elements simultaneously.
Also it should be noted that, the orientation term such as left and right, upper and lower in the utility model embodiment, is only relative concept or be reference with the normal operating condition of product each other, and should not be regarded as have restrictive.
As depicted in figs. 1 and 2, a kind of side set cutting drill head that the utility model embodiment provides, comprise drill main body 1, described drill main body 1 has principal screw groove 101, the side of described principal screw groove 101 is cutting edge, the side that described drill main body 1 corresponds to described principal screw groove 101 is provided with side set helicla flute 102, described principal screw groove 101 is provided with at least one, described side set helicla flute 102 is arranged at the edge of described principal screw groove 101, described side set helicla flute 102 degree of depth is greater than or equal to the thick size h of core of drill main body 1, like this, do not reducing the space adding chip removal under the thick prerequisite of core, drill body rigidity can not weaken, thus ensure bore position precision, its borehole accuracy and chip discharge can meet instructions for use simultaneously.In the present embodiment, described principal screw groove 101 is provided with at least two, and side set helicla flute 102 is also provided with at least two.
Particularly, described cutting edge is divided into parallel two sections by described side set helicla flute 102, and it is easy to processing, certainly, also can be set to, close to the form such as parallel, also belong to protection domain of the present utility model.
Particularly, described side set helicla flute 102 width can be less than 0.5 times of sword lobe width.
Or described side set helicla flute 102 width also can be greater than 0.5 times of sword lobe width, also belongs to protection domain of the present utility model.
Particularly, the front end of described drill main body 1 is provided with taper surface, is beneficial to processing.
Particularly, the diameter of described drill bit can be less than 0.2 millimeter, can be applied to the processing that diameter is less than the ultra tiny via of 0.2mmPCB; certainly; the diameter of drill bit also can be greater than 0.2 millimeter, and it can be determined according to specific requirement, also belongs to protection domain of the present utility model.
Particularly, described cutting edge is divided into two sections by described side set helicla flute 102, and is arc transition between parallel cutting edge, and it can avoid stress to concentrate.
Particularly, form obvious line of demarcation after described side set helicla flute 102 cuts principal screw groove 101 and between principal screw groove 101, result of use is good.
Particularly, described side set helicla flute 102 can be less than or equal to principal screw flute length 101.
Particularly, described side set helicla flute 102 can be parallel or crossing with principal screw groove 101.
Side set cutting drill head provided by the utility model, the side that described in it, drill main body 1 corresponds to described principal screw groove 101 is provided with side set helicla flute 102, described cutting edge is divided into parallel two sections by side set helicla flute 102, do not reducing the space adding chip removal under the thick prerequisite of core, drill body rigidity can not weaken, thus ensureing bore position precision, its borehole accuracy and chip discharge can meet instructions for use simultaneously, and result of use is good.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace or improvement etc., all should be included within protection domain of the present utility model.
Claims (10)
1. a side set cutting drill head, comprise drill main body, described drill main body has principal screw groove, the side of described principal screw groove is cutting edge, it is characterized in that, the side that described drill main body corresponds to described principal screw groove is provided with side set helicla flute, and described principal screw groove is provided with at least one, described side set helicla flute is arranged at the edge of described principal screw groove, and the described side set helicla flute degree of depth is greater than or equal to the thick size of core of drill main body.
2. side set cutting drill head as claimed in claim 1, is characterized in that, described cutting edge is divided into parallel two sections or crossing two sections by described side set helicla flute.
3. side set cutting drill head as claimed in claim 1, it is characterized in that, described side set helicla flute width is less than 0.5 times of sword lobe width.
4. side set cutting drill head as claimed in claim 1, it is characterized in that, described side set helicla flute width is greater than 0.5 times of sword lobe width.
5. side set cutting drill head as claimed in claim 1, it is characterized in that, described side set helicla flute penetraction depth reduces gradually.
6. side set cutting drill head as claimed in claim 1, it is characterized in that, the diameter of described drill bit is less than 0.2 millimeter.
7. side set cutting drill head as claimed in claim 1, it is characterized in that, described cutting edge is divided into two sections by described side set helicla flute, and is arc transition between parallel cutting edge.
8. side set cutting drill head as claimed in claim 1, is characterized in that, after described side set helicla flute incision principal screw groove and form line of demarcation between principal screw groove.
9. side set cutting drill head as claimed in claim 1, it is characterized in that, described side set helicla flute is less than or equal to principal screw flute length.
10. side set cutting drill head as claimed in claim 1, it is characterized in that, described side set helicla flute is parallel or crossing with principal screw groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520712295.5U CN204934689U (en) | 2015-09-15 | 2015-09-15 | Side set cutting drill head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520712295.5U CN204934689U (en) | 2015-09-15 | 2015-09-15 | Side set cutting drill head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204934689U true CN204934689U (en) | 2016-01-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520712295.5U Active CN204934689U (en) | 2015-09-15 | 2015-09-15 | Side set cutting drill head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204934689U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105108211A (en) * | 2015-09-15 | 2015-12-02 | 深圳市金洲精工科技股份有限公司 | Staggered tooth blade drilling bit |
-
2015
- 2015-09-15 CN CN201520712295.5U patent/CN204934689U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105108211A (en) * | 2015-09-15 | 2015-12-02 | 深圳市金洲精工科技股份有限公司 | Staggered tooth blade drilling bit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |