CN207205353U - A kind of high intensity drill point - Google Patents
A kind of high intensity drill point Download PDFInfo
- Publication number
- CN207205353U CN207205353U CN201721105622.6U CN201721105622U CN207205353U CN 207205353 U CN207205353 U CN 207205353U CN 201721105622 U CN201721105622 U CN 201721105622U CN 207205353 U CN207205353 U CN 207205353U
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- groove
- needle body
- drill point
- knife
- high intensity
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Abstract
The utility model provides a kind of high intensity drill point, including：The needle body：The needle body is provided with spiral helicine groove, and axial cross section of the groove along the needle body is " u "-shaped；Afterbody of the pitch of groove from the head of the needle body to the needle body gradually increases；Knife portion：Knife portion is located at the front end formation edge of a knife on the head of the needle body, knife portion and groove, and the utility model drill point is prevented because chip space is too small, blocks even stuck drill point, intensity is high, is not easy broken needle.
Description
Technical field
Drill point is the utility model is related to, more particularly, to a kind of high intensity drill point.
Background technology
Electronic product is towards under compact designer trends now so that various electronic products become for volume requirement
Must be smaller, therefore the manufacture processing of various electronic components will become increasingly finer inside electronic product, and make in electronic product
Being available for the printed circuit plate bulk of electric component group setting position must also reduce therewith, so in the processing procedure of printed circuit board (PCB),
The machine drilling processing procedure of circuit substrate processing can be carried out using drill point mostly, and the multiple pins that can provide electronic component intert
Give solid welding again afterwards to be electrically connected.
The drill point is by the contact through circuit substrate layer and interlayer, to produce the path of point-to-point, for circuit
Each electronic component is able to connection concatenation on substrate, however, drill point is provided with the drillstock for being available for board to clamp in its side, then at another side
The edge of a knife provided with rotatable drilling, the drillstock for driving clamping using board carries out high speed rotation, to allow edge of a knife one end rotating contact
Circuit substrate, knife edge contact circuit substrate are rubbed and cut, and circuit substrate produces great moment of torsion to producing the edge of a knife, can allow
Drill point easily produces the situation of broken needle and allows hole to limit（The hole number that every drill point can bore）Reduce, and easy Integrated Chip, so as to reduce
The machining accuracy and wall quality of hole position reduce, and cause the yield of circuit substrate drilling processing procedure to reduce.
Need one kind badly and be not easy broken needle, prevent the high intensity drill point of Integrated Chip.
Utility model content
In view of this, the utility model provides a kind of high intensity drill point for being not easy broken needle.
The purpose of this utility model is achieved through the following technical solutions：
A kind of high intensity drill point, including：The needle body：The needle body is provided with spiral helicine groove, and groove is along the axial cross section of the needle body
" u "-shaped, the afterbody of the pitch of groove from the head of the needle body to the needle body gradually increase；Knife portion：Knife portion is located at the head of the needle body, knife portion
The edge of a knife is formed with the front end intersection of groove.
During processing, the edge of a knife and friction of workpiece, chip is produced, the groove at the head of the needle body produces more close to machined surface
Chip, the needle body is threaded the groove of shape, and the afterbody of the pitch of groove from the head of the needle body to the needle body gradually increases, close to pin
Helical groove pitch at body head is smaller, can hold that chip is more, and groove of the chip along shape of threads moves upwards, most heel row
Go out groove, prevent because chip space is too small, block even stuck drill point；During rotation, the moment of torsion of rotating the needle is big, and distribution is excessively concentrated
Groove cause the low intensity of drill point, broken needle easily occurs；The utility model drill point is larger close to the recessed poor pitch of needle body afterbody,
Intensity is high, is not easy broken needle.
Preferably, groove is two, and the edge of a knife that two grooves are formed with knife portion respectively is symmetrical.
Same level stress balance when the symmetrical edge of a knife cuts rotation, local pressure mistake is not easy in horizontal direction
Greatly, broken needle occurs, two edges of a knife, increases stock-removing efficiency and chip removal efficiency.
Preferably, two grooves are juxtaposed on blade, and the distance between two grooves are from the head of the needle body to the needle body
Afterbody is gradually reduced, and the end of two grooves overlaps.
During processing, the Integrated Chip of needle body afterbody is less, and the groove area that the needle body opens up is excessive, the low intensity of drill point, and two recessed
The distance between groove is gradually reduced from the head of the needle body to the afterbody of the needle body, is overlapped in the afterbody of the needle body, ensures that needle body head has
Larger Integrated Chip space, increase chip removal efficiency, diminishing groove spacing, until overlapping, avoid needle body middle part and afterbody
Because fluting area is excessive, low intensity, broken needle occurs.
Preferably, the groove depth of groove is gradually reduced from the front end of groove to the end of groove.
The groove depth of groove is gradually reduced from the front end of groove to the end of groove, ensures that needle body head has larger Integrated Chip empty
Between, in the middle part of the needle body and depth of groove that afterbody is gradually reduced, due to the needle body thickness group of the horizontal direction between two grooves
Part increases, and the intensity of drill point gradually increases, in use, the main shaft of the afterbody of the needle body and lathe connects, junction intensity is high, is not easy
Generation broken needle.
Preferably, the angle that two edges of a knife are formed is 130 °.
Drill point angle i.e. at drill point head tip is 130 °, and the hole position of drill point processing is good, and wear resistant ability is strong, is not easy to lack
Angle.
Preferably, needle length is 1.5mm~1.8mm.
The length of the needle body is 1.5mm~1.8mm, and groove is opened in the needle body, ensure to have it is enough escape gap length, Integrated Chip can be suitable
Profit excludes, and the pore structure precision processed is high, while avoids because rotating the needle length is oversize, and broken needle occurs for easy stress.
Preferably, the axis angle of the slotted line of groove front end and the needle body is 35 °~37 °
The slotted line of groove front end and the axis angle of the needle body are 35 °~37 °, ensure that needle body front end has larger allowance empty
Between, prevent that allowance space is too small, front end produces more chip when processing and has little time to exclude, and influences pore-forming accuracy.
Preferably, the edge of a knife is coated with titanium nitride or diamond dust coating.
The edge of a knife is coated with titanium nitride or diamond dust coating, improves the wearability of the edge of a knife, so as to extend the service life of drill point.
The beneficial effects of the utility model：
1. high intensity drill point provided by the utility model, the needle body is threaded the groove of shape, and the pitch of groove is from the needle body
Head gradually increase to the afterbody of the needle body, the helical groove pitch at the needle body head is smaller, and it is more to hold chip, broken
Bits move upwards along the groove of shape of threads, finally discharge groove, prevent because chip space is too small, block even stuck brill
Pin；During rotation, the moment of torsion of rotating the needle is big, and being distributed the groove excessively concentrated causes the low intensity of drill point, and broken needle easily occurs；This practicality
New drill point is larger close to the recessed poor pitch of needle body afterbody, and intensity is high, is not easy broken needle.
2. high intensity drill point provided by the utility model, the distance between two grooves are from the head of the needle body to the needle body
Afterbody is gradually reduced, and is overlapped in the afterbody of the needle body, ensures that there is larger Integrated Chip space on needle body head, increases chip removal efficiency, gradually
The groove spacing of diminution, until overlapping, avoid in the middle part of the needle body and afterbody is because fluting area is excessive, low intensity, broken needle occurs.
3. high intensity drill point provided by the utility model, the end of the groove depth of groove from the front end of groove to groove is gradual
Reduce, ensure that there are larger Integrated Chip space, the depth of groove that needle body middle part and afterbody are gradually reduced, due to two in needle body head
The needle body thickness component increase of horizontal direction between groove, the intensity of drill point gradually increases, in use, the afterbody and machine of the needle body
The main shaft connection of bed, junction intensity is high, is not susceptible to broken needle.
4. high intensity drill point provided by the utility model, the drill point angle at drill point head tip is 130 °, drill point processing
Hole position it is good, wear resistant ability is strong, is not easy unfilled corner.
5. high intensity drill point provided by the utility model, the length of the needle body is 1.5mm~1.8mm, and groove is opened in pin
Body, ensure to have it is enough escape gap length, Integrated Chip can be excluded smoothly, and the pore structure precision processed is high, while avoids due to rotating the needle
Length is oversize, and broken needle occurs for easy stress.
6. high intensity drill point provided by the utility model, the slotted line of groove front end and the axis angle of the needle body are 35 °
~37 °, ensure that there is larger allowance space needle body front end, prevent that allowance space is too small, front end produces more chip and come when processing
Not as good as exclusion, pore-forming accuracy is influenceed.
Brief description of the drawings
Fig. 1 is the high intensity drill point structure schematic diagram of embodiment 1；
Fig. 2 is the high intensity drill point structure schematic diagram of embodiment 2；
Wherein：The 10- needle bodys；101- grooves；20- knives portion；The 201- edges of a knife.
Embodiment
Technical solutions of the utility model are further described with reference to embodiment.
Embodiment 1
As shown in figure 1, the present embodiment provides a kind of high intensity drill point, including：The needle body 10：The needle body 10 is provided with spiral helicine recessed
Groove 101, axial cross section of the groove 101 along the needle body 10 are " u "-shaped；The pitch of groove 101 is from the head of the needle body 10 to the needle body 10
Afterbody gradually increases；Knife portion 20：Knife portion 20 is located at the head of the needle body 10, and knife portion 20 and the front end intersection of groove 101 form knife
Mouth 201.
During processing, the edge of a knife 201 and friction of workpiece, produce chip, the groove 101 at the head of the needle body 10 close to machined surface,
More chip is produced, the needle body 10 is threaded the groove 101 of shape, and the pitch of groove 101 is from the head of the needle body 10 to the needle body 10
Afterbody gradually increase, the pitch of helical groove 101 at the head of the needle body 10 is smaller, and it is more to hold chip, chip along
The groove 101 of shape of threads moves upwards, finally discharges groove 101, prevents because chip space is too small, blocks even stuck brill
Pin；During rotation, the moment of torsion of rotating the needle is big, and being distributed the groove 101 excessively concentrated causes the low intensity of drill point, and broken needle easily occurs；This
Utility model drill point is larger close to the recessed poor pitch of the afterbody of the needle body 10, and intensity is high, is not easy broken needle.
Embodiment 2
As shown in Fig. 2 the present embodiment provides a kind of high intensity drill point, including：The needle body 10：The needle body 10 is provided with spiral helicine recessed
Groove 101, axial cross section of the groove 101 along the needle body 10 are the pitch of " u "-shaped groove 101 from the head of the needle body 10 to the tail of the needle body 10
Portion gradually increases；Knife portion 20：Knife portion 20 is located at the head of the needle body 10, and knife portion 20 and the front end intersection of groove 101 form the edge of a knife
201。
Groove 101 is two, and the edge of a knife 201 that two grooves 101 are formed with knife portion 20 respectively is symmetrical.
Same level stress balance when the symmetrical edge of a knife 201 cuts rotation, local pressure is not easy in horizontal direction
It is excessive, broken needle occurs, two edges of a knife 201, increases stock-removing efficiency and chip removal efficiency.
Two grooves 101 are juxtaposed on blade, and the distance between two grooves 101 are from the head of the needle body 10 to the needle body 10
Afterbody be gradually reduced, the end of two grooves 101 overlaps.
During processing, the Integrated Chip of the afterbody of the needle body 10 is less, and the area of groove 101 that the needle body 10 opens up is excessive, the low intensity of drill point,
The distance between two grooves 101 are gradually reduced from the head of the needle body 10 to the afterbody of the needle body 10, are overlapped in the afterbody of the needle body 10,
Ensure that there is larger Integrated Chip space on the head of the needle body 10, increase chip removal efficiency, the diminishing spacing of groove 101, until overlapping, keep away
Exempt from the middle part of the needle body 10 and afterbody because fluting area is excessive, low intensity, broken needle occurs.
Embodiment 3
The present embodiment provides a kind of high intensity drill point, and the present embodiment is similar to Example 2, and difference is the present embodiment groove
101 groove depth is gradually reduced from the front end of groove 101 to the end of groove 101.
The groove depth of groove 101 is gradually reduced from the front end of groove 101 to the end of groove 101, ensures that the head of the needle body 10 has
The depth of groove 101 that larger Integrated Chip space, the middle part of the needle body 10 and afterbody are gradually reduced, due between two grooves 101
The thickness component of the needle body 10 increase of horizontal direction, the intensity of drill point gradually increases, in use, the master of the afterbody of the needle body 10 and lathe
Axis connection, junction intensity is high, is not susceptible to broken needle.
Embodiment 4
The present embodiment provides a kind of high intensity drill point, and the present embodiment is similar to Example 2, and difference is that the present embodiment bores
Drill point angle at needle section tip is 130 °, and the hole position of drill point processing is good, and wear resistant ability is strong, is not easy unfilled corner.
The length of the needle body 10 is 7mm.
The length of the needle body 10 is 7mm, and groove 101 is opened in the needle body 10, ensure to have it is enough escape gap length, Integrated Chip can be smoothly
Exclude, the pore structure precision processed is high, while avoids because rotating the needle length is oversize, and broken needle occurs for easy stress.
The slotted line of the front end of groove 101 is 35 ° to 37 ° with the axis angle of the needle body 10
The slotted line of the front end of groove 101 is 35 ° to 37 ° with the axis angle of the needle body 10, and it is larger to ensure that the front end of the needle body 10 has
Allowance space, prevent that allowance space is too small, front end produces more chip and have little time to exclude when processing, and influences pore-forming accuracy.
The edge of a knife 201 is coated with titanium nitride or diamond dust coating.
The edge of a knife 201 is coated with titanium nitride or diamond dust coating, the wearability of the edge of a knife 201 is improved, so as to extend the use of drill point
Life-span.
It is wherein specific implementation of the present utility model above, therefore its description is more specific and detailed, but can not be
And it is interpreted as the limitation to the utility model patent scope.For the person of ordinary skill of the art, this reality is not being departed from
On the premise of new design, various modifications and improvements can be made, these obvious alternative forms belong to this reality
With new protection domain.
Claims (8)
- A kind of 1. high intensity drill point, it is characterised in that including：The needle body：The needle body is provided with spiral helicine groove, and axial cross section of the groove along the needle body is " u "-shaped, and the pitch of groove is from the needle body Head gradually increases to the afterbody of the needle body；Knife portion：Knife portion is located at the front end intersection formation edge of a knife on the head of the needle body, knife portion and groove.
- 2. high intensity drill point according to claim 1, it is characterised in that groove be two, two grooves respectively with knife portion Two edges of a knife formed are symmetrical.
- 3. high intensity drill point according to claim 2, it is characterised in that two grooves are juxtaposed on blade, and two recessed The distance between groove is gradually reduced from the head of the needle body to the afterbody of the needle body, and the end of two grooves overlaps.
- 4. high intensity drill point according to claim 1, it is characterised in that the groove depth of groove is from the front end of groove to groove End is gradually reduced.
- 5. according to the high intensity drill point described in claim 2-4 any one claims, it is characterised in that two edges of a knife are formed Angle be 130 °.
- 6. high intensity drill point according to claim 1, it is characterised in that needle length is 1.5mm~1.8mm.
- 7. high intensity drill point according to claim 1, it is characterised in that the slotted line of groove front end and the axis of the needle body press from both sides Angle is 35 °~37 °.
- 8. high intensity drill point according to claim 1, it is characterised in that the edge of a knife is coated with titanium nitride or diamond dust coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721105622.6U CN207205353U (en) | 2017-08-31 | 2017-08-31 | A kind of high intensity drill point |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721105622.6U CN207205353U (en) | 2017-08-31 | 2017-08-31 | A kind of high intensity drill point |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207205353U true CN207205353U (en) | 2018-04-10 |
Family
ID=61826283
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721105622.6U Active CN207205353U (en) | 2017-08-31 | 2017-08-31 | A kind of high intensity drill point |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207205353U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107442815A (en) * | 2017-08-31 | 2017-12-08 | 广州卓程电子科技有限公司 | A kind of high intensity drill point |
-
2017
- 2017-08-31 CN CN201721105622.6U patent/CN207205353U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107442815A (en) * | 2017-08-31 | 2017-12-08 | 广州卓程电子科技有限公司 | A kind of high intensity drill point |
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