CN208961067U - A kind of high intensity length groove cutter - Google Patents
A kind of high intensity length groove cutter Download PDFInfo
- Publication number
- CN208961067U CN208961067U CN201820395617.1U CN201820395617U CN208961067U CN 208961067 U CN208961067 U CN 208961067U CN 201820395617 U CN201820395617 U CN 201820395617U CN 208961067 U CN208961067 U CN 208961067U
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- knife
- groove
- length
- slot
- helical
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- 230000008520 organization Effects 0.000 claims abstract description 6
- 238000005520 cutting process Methods 0.000 description 15
- 238000005553 drilling Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Drilling Tools (AREA)
Abstract
The utility model discloses high-intensitive length groove cutters, including micro-groove knife ontology and shank, symmetrical apex face and two symmetrical auxiliary knife faces there are two being set on micro-groove knife ontology, and corresponding two helical flutes, the land lateral border of apex face is recessed with gap, auxiliary knife face edge is equipped with groove along helical flute, between two helical flutes from parallel with angle gradient be parallel organization, and a helical flute terminates after a parallel segment length, another helical flute continues to extend to fluting and terminate, short helical flute accounts for the 30%~80% of long spire chip space.High intensity length groove cutter provided by the utility model is relative to existing slot knife, its trench design is that one is long and the other is short, and two slots from parallel with angle gradient be parallel organization, and corresponding recessed gap length is also that one is long and the other is short, such a series of design is so that slot knife stabilized structure, chip removal is unobstructed, good processing accuracy, and hole wall is smooth.
Description
Technical field
The utility model relates to PCB cutters, and in particular to a kind of fine slot knife.
Background technique
The increasingly light and short development with multifunction of electronic product, so that interiors of products part requirements are more and more finer,
This also pushes PCB industry constantly to advance, to the related industry of printed circuit board (Printed Circuit Board, PCB)
Propose increasingly higher demands.
Machine drilling is important procedure indispensable in PCB production process, and drill bit, slot knife needed for PCB processing etc.
It is the key that guarantee the processing qualities cutters such as hole, slot.For the installation foot of certain particular components need rectangle, ellipse or its
When the through-hole of his type, slot knife is preferred cutter.And the wearability of slot knife, intensity, chip resistance are always that measure its quality good
Bad rigid index, the slot size precision that wearability drills out well is high, and intensity will increase well the service life of slot knife, be not easy breaking, arranges
Bits property is good so that slot is clean, is not susceptible to the flash phenomenon of stopple phenomenon and slot.
There is an urgent need to develop cutters of good performance out in PCB cutter market at present, to prolong its service life, significantly
Cutter consumed cost is reduced, promotes profit, and number of changing knife can be reduced, improves board efficiency, increases production capacity, promotes competitiveness.
Slot knife can drilling hole type it is more flexible, bore mode also more general cutter diversification, in this way to the intensity of slot knife, chip resistance, wear-resisting
More stringent requirements are proposed for the performances such as property.
So existing slot knife structure can not meet the needs of printed circuit board production well.One is provided as a result,
The problem of good slot knife scheme of the high-intensitive chip removal of kind is this field urgent need to resolve.
Utility model content
For existing printed circuit board the problems of micro-groove knife, a kind of new micro-groove knife scheme is needed.
For this purpose, the problem to be solved by the utility model is to provide a kind of high-intensitive length groove cutter, which has height
Intensity and its chip resistance is taken into account, defect present in the prior art can be overcome.
To solve the above-mentioned problems, high-intensitive length groove cutter provided by the utility model comprising micro-groove knife ontology
And shank, set that there are two symmetrical apex face and two symmetrical auxiliary knife faces and two corresponding on the micro-groove knife ontology
Helical flute, the land lateral border of the apex face are recessed with gap, and the auxiliary knife face edge is equipped with along helical flute
Groove, from angle gradient being in parallel parallel organization between described two helical flutes, and the first helical flute is simultaneously
It is terminated after one segment length of row, the second helical flute continues to extend to fluting and terminate, and first helical flute accounts for the second spiral shell
Revolve the 30%~80% of chip space.
Further, the slot knife is pre-large post-small UC type, and the outer diameter of slot knife ontology is 0.3-2.0mm；Thus may be used
The friction for reducing slot knife and hole wall, to guarantee good hole wall quality.
Further, the outer diameter in micro-groove knife ontology endpiece portion is greater than the leading portion portion of micro-groove knife ontology, thus makes
The structure of slot knife is more firm, while can guarantee that slot knife and the cooperation for the board that drills are more stable, and slot pass is more preferable.
Further, the depth in the recessed gap accounts for the 1~40% of slot knife outer diameter, the recessed gap length, with
One helical flute length is corresponding to account for the 30%~60% of short flute length, corresponding with the second helical flute length to extend always
To fluting tail portion.
For high intensity length groove cutter provided by the utility model relative to existing slot knife, trench design is that one is long and the other is short,
And two slots are from angle gradient being in parallel parallel organization, and corresponding recessed gap length is also that one is long and the other is short, such system
So that slot knife stabilized structure, chip removal is unobstructed, good processing accuracy, hole wall is smooth for the design of column.
On this basis, the endpiece of high-intensitive length groove cutter groove knife provided by the utility model is set using what outer diameter increased
Meter, such design also can guarantee that slot knife and the cooperation for the board that drills are more stable, and slot pass is more preferable.
On this basis, high-intensitive length groove cutter provided by the utility model is special in the setting of the knife face portion of slot knife ontology
Be recessed with gap thus to further increase the chip removal performance of slot knife.
Detailed description of the invention
The utility model is further illustrated below in conjunction with the drawings and specific embodiments.
Fig. 1 is the structural schematic diagram for the micro-groove knife side that the example of the utility model provides；
Fig. 2 is the positive structural schematic diagram of micro-groove knife that the example of the utility model provides.
Specific embodiment
In order to be easy to understand the technical means, creative features, achievement of purpose, and effectiveness of the utility model, under
Face combines and is specifically illustrating, and the utility model is further described.
Referring to Fig. 1 and Fig. 2 which shows the topology example for the high-intensitive length groove cutter that this example provides.
As seen from the figure, the micro-groove knife 100 that this example provides is mainly by slot shank section 110 and slot knife ontology 120 two
The UC type constituted, i.e., pre-large post-small design are closed in distribution, and the purpose of this design mainly reduces the friction of slot knife and hole wall, thus
Guarantee good hole wall quality.
Split settings between this example bracket groove shank section 110 and slot knife ontology 120 are connected by welding structure between the two
It is integrally formed micro-groove knife 100.
Wherein, slot shank section 110 is constituted using stainless steel, i.e., proof strength can reduce cost again.The slot shank section 110
Generally cylindrical, connecting pin is provided with connection changeover portion 111, and the connection changeover portion 111 is generally round table-like, and end face is made
For joint face, it to be used for link slot knife ontology 120.
As an alternative solution, the side of the connection changeover portion 111 is using the arc surface of indent or the arc surface of evagination, equally
Reach good transition effect.
As an alternative solution, which can be used multistage frustum cone structure, such as 2 grades or 3 grades of frustum cone structures, energy
It is enough to reach good transition effect while improving connection reliability.
It is integral using shape is connected using high frequency soldering between slot knife ontology 120 and slot shank section 110, thus constitute
Micro-groove knife 100.
On this basis, the slot knife ontology 120 in this example is used as cutting portion, specifically sets cut there are two symmetrically main thereon
Cut sword 121,122, two symmetrical auxiliary blades 123,124 and corresponding two helical flutes 125 and 126.
Referring to fig. 2, two main cutting edges 121,122 with the central point at the top of cutting portion 120 (i.e. apex point) are in this example
Symmetric points, it is symmetrical；Two auxiliary blades 123,124 are respectively along two main cutting edges 121,122 simultaneously, and equally with cutting portion
The central point at 120 tops (i.e. apex point) is symmetric points, and auxiliary blade 123 transits directly to main cutting edge 122 by circular arc camber,
And auxiliary blade 124 transits directly to main cutting edge 121 by circular arc camber, thus constitutes the cutting portion 120 of catling.Such shape
At cutting portion 120 at the top of can greatly improve the intensity of cutting effect and blade.
On this basis, two helical flutes 125 and 126 are arranged since slot nose part around 120 spiral of cutting portion.
Wherein, from angle gradient being in parallel parallel organization between two helical flutes, and chip space 126 is in a parallel segment length
After terminate, another chip space 125 continues to extend to fluting and terminate, and according to the difference of slot knife specification, short chip space 126 accounts for long chip removal
The 30%~80% of slot 125.Thus the length difference constituted and debris discharging chute structure arranged side by side, increase chip space, guarantee row
It considers unobstructed friction between reduction chip and hole wall to be worth doing, can be very good to guarantee wall quality.
In order to keep the structure of slot knife more firm, this example bracket groove knife ontology (i.e. cutting portion) is designed using non-even diameter, wherein
The leading portion portion of slot knife ontology is that even diameter is arranged, outer diameter 0.3-2.0mm, and 127 outer diameter of endpiece portion is greater than the outer of leading portion portion
Diameter, the outer diameter preferably than leading portion portion reaches 0.1-0.5mm here, and such cooperation for designing also certifiable slot knife and the board that drills is more
Stablize, slot pass is more preferable.Here endpiece 127 is specially the reserved chip space length of slot knife drilling, will not device to hole ruler
It is very little to impact, and good booster action is played in the shape of hole；It is used between endpiece 127 and the leading portion portion of slot knife ontology simultaneously
Arc transition.
Furthermore this example is further recessed with gap 128 and 129 in the land lateral border of apex face,
This example specifically on the outside of the land of two main cutting edges 121,122, extend along be respectively arranged on direction it is narrow
Recessed gap 128 and 129 is consequently formed in long groove.Here the concrete shape in recessed gap depending on actual needs, this
In preferably on the outside of the land of main cutting edge extending direction distribution and cross section be in " V " elongated slot structure.
The depth in two recessed gaps 128 and 129 of such structure accounts for the 1~40% of slot knife outer diameter.And corresponds to master and cut
The length for cutting the recessed gap 128 and 129 of sword 121,122 is different, the corresponding short recessed gap 128 of short chip space 126, and short recessed
If the length in gap 128 accounts for long 30%~60% of short chip space 126；Long chip space 125 corresponds to long recessed gap 129, and
Long recessed gap 129 is corresponding with long chip space 125 to extend to fluting tail portion.
It can effectively reduce the friction of slot knife and hole wall by the recessed gap, reduce that hole is thick and the generation of ailhead, and
Can accelerate to shed the heat that slot knife and hole wall friction generate, and hole wall quality is more preferable.
The high-intensitive length groove cutter 100 that this example provides is relative to existing micro-groove knife, and chip space is big, chip removal
Property it is good, structural stability is strong, and intensity is high, can be good at the boring requirement for meeting slot on all kinds of plates, and the service life to drill
It is long, it is not easy broken needle.
Basic principles, main features, and advantages of the present invention has been shown and described above.Current row
The technical staff of industry is described in above embodiments and description it should be appreciated that the present utility model is not limited to the above embodiments
Only illustrate the principles of the present invention, on the premise of not departing from the spirit and scope of the utility model, the utility model is also
It will have various changes and improvements, these various changes and improvements fall within the scope of the claimed invention.The utility model
Claimed range is defined by the appending claims and its equivalent thereof.
Claims (5)
1. high-intensitive length groove cutter, including micro-groove knife ontology and shank, which is characterized in that set on the micro-groove knife ontology
There are two symmetrical apex face and two symmetrical auxiliary knife faces and corresponding two helical flutes, the lands of the apex face
Lateral border is recessed with gap, and the auxiliary knife face edge is equipped with groove along helical flute, between described two helical flutes
From with angle gradient being in parallel parallel organization, and the first helical flute terminates after a parallel segment length, the second spiral row
Bits slot continues to extend to fluting and terminate, and first helical flute accounts for the 30%~80% of the second helical flute.
2. high intensity length groove cutter according to claim 1, which is characterized in that the slot knife is pre-large post-small UC
Type, and the outer diameter of slot knife ontology is 0.3-2.0mm.
3. high intensity length groove cutter according to claim 1, which is characterized in that micro-groove knife ontology endpiece portion
Outer diameter is greater than the leading portion portion of micro-groove knife ontology.
4. high intensity length groove cutter according to claim 1, which is characterized in that the depth in the recessed gap accounts for slot knife
The 1~40% of outer diameter.
5. high intensity length groove cutter according to claim 1, which is characterized in that in the recessed gap with the first spiral
Chip space it is long it is corresponding accounts for the 30%~60% of the first debris flute length, with the second helical flute it is long it is corresponding always
Extend to fluting tail portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820395617.1U CN208961067U (en) | 2018-03-22 | 2018-03-22 | A kind of high intensity length groove cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820395617.1U CN208961067U (en) | 2018-03-22 | 2018-03-22 | A kind of high intensity length groove cutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208961067U true CN208961067U (en) | 2019-06-11 |
Family
ID=66746591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820395617.1U Expired - Fee Related CN208961067U (en) | 2018-03-22 | 2018-03-22 | A kind of high intensity length groove cutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208961067U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110587712A (en) * | 2019-10-10 | 2019-12-20 | 广东鼎泰高科精工科技有限公司 | Recyclable groove cutter and recycling method thereof |
-
2018
- 2018-03-22 CN CN201820395617.1U patent/CN208961067U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110587712A (en) * | 2019-10-10 | 2019-12-20 | 广东鼎泰高科精工科技有限公司 | Recyclable groove cutter and recycling method thereof |
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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: 20190611 |