CN201044539Y - Composite level bar structure of cutting tools for printed circuit board - Google Patents
Composite level bar structure of cutting tools for printed circuit board Download PDFInfo
- Publication number
- CN201044539Y CN201044539Y CNU2007201436742U CN200720143674U CN201044539Y CN 201044539 Y CN201044539 Y CN 201044539Y CN U2007201436742 U CNU2007201436742 U CN U2007201436742U CN 200720143674 U CN200720143674 U CN 200720143674U CN 201044539 Y CN201044539 Y CN 201044539Y
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- weld part
- base material
- material portion
- circuit board
- printed circuit
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Abstract
The utility model relates to a composite class barstock structure of a cutting tool used in a PCB, the barstock of the barstock structure consists of a sealed end made from tungsten steel materials and a base material part made from stainless steel materials; one end part of the sealed end is fixed in the middle of one end part of the base material part in a welding manner; the diameter and the length of the sealed end is smaller than those of the base material part. As the sealed end with the diameter and the length smaller than those of the base material part is used, the utility model has the advantages of decreasing required time in contour machining and lowering materials cost compared with the prior integral type tungsten carbide barstock.
Description
Technical field
The utility model relates to a kind of bar structure that can be used for making the use in printed circuit board drill bit, particularly relates to a kind of combined type class bar structure of use in printed circuit board cutting tool.
Background technology
In traditional printed circuit board (PCB) processing and manufacturing, the processing procedure of drilling has suitable popularization, the mode of existing drilling is to utilize the drill bit of high speed rotating to get out hole at printed circuit board (PCB), so that the pin of circuit turn-on or plant electronic component between multilayer board, the accuracy of hole can be relevant with the finished printed circuit board product quality, so whether the quality of drill bit is good, and its importance is just arranged.
Existing use in printed circuit board drill rod structure, please cooperate consult shown in Figure 8, it is that weld part 80 with one section stainless base material portion 70 and one section wolfram steel gives combination, because the price difference of material, the price of the wolfram steel of equivalent can be higher than the stainless steel of equivalent, so consider down in the price of drill bit, the length of base material portion 70 is greater than weld part 80, base material portion 60 is clampings of being convenient to follow-up drilling machine clamping part, weld part 80 through the following process introduction is the holes that are used to be drilled with on the printed circuit board (PCB), and the diameter of base material portion 70 is identical with the diameter of weld part 80;
One end of base material portion 70 can with the mutual solid welding in an end of weld part 80, so between base material portion 70 and weld part 80, can be formed with solder side 71, aforesaid finished product is commonly referred to as bar, the bar that to finish solid welding more is placed in the board place, so as to carrying out the finishing of cylindrical beat, it is to utilize emery wheel that base material portion 70 is ground to form proper circle shape bar with weld part 80;
Please cooperate and consult shown in Figure 9ly, the bar after grinding finished carries out following process again, and weld part 80 is carried out the processing procedure of tapering 81 and cutting portion 82, after weld part 80 has cutting portion 82, promptly finishes the making of use in printed circuit board drill bit.
Yet above-mentioned bar structural disadvantages is, because bar base material portion 70 is isometrical with weld part 80, and is respectively big stainless steel of nonhomogeneous hardness and wolfram steel material, and different materials need have the specific emery wheel that cooperates with its hardness to carry out the outward appearance grinding;
But the bar diameter is identical and base material portion that material hardness is different 70 when rebuilding bar cylindrical beat with weld part 80 on carrying out follow-up emery wheel board, because of emery wheel grinds the different hardness material simultaneously, can produce the abrasion wheel grinding difficulty, produce beat and grind the not good situation of back out of roundness, this kind bar will have influence on the quality of follow-up drill bit processing and forming.
In addition, because the price variance of material is bigger, base material portion 70 is identical with weld part 80 diameters, when the follow-up weld part 80 of bar carries out 82 making of bit cutting portion, its weld part 80 most materials can be cut, therefore for production firm, be a kind of waste that costs an arm and a leg material and process time far and away, increase has very big influence to cost.
This shows that above-mentioned existing use in printed circuit board drill rod structure obviously still has inconvenience and defective, and demands urgently further being improved.In order to solve the problem of above-mentioned existence, relevant manufacturer there's no one who doesn't or isn't seeks solution painstakingly, but do not see always that for a long time suitable design finished by development, and common product does not have appropriate structure to address the above problem, this obviously is the problem that the anxious desire of relevant dealer solves.Therefore how to found a kind of combined type class bar structure of novel use in printed circuit board cutting tool, real one of the current important research and development problem that belongs to, also becoming the current industry utmost point needs improved target.
Because the defective that above-mentioned existing use in printed circuit board drill rod structure exists, the design people is based on being engaged in this type of product design manufacturing abundant for many years practical experience and professional knowledge, and the utilization of cooperation scientific principle, actively studied innovation, in the hope of founding a kind of combined type class bar structure of novel use in printed circuit board cutting tool, can improve general existing use in printed circuit board drill rod structure, make it have more practicality.Through constantly research, design, and, create the utility model that has practical value finally through after studying sample and improvement repeatedly.
Summary of the invention
The purpose of this utility model is, overcome the defective that existing bar exists, and provide a kind of combined type class bar structure of novel use in printed circuit board cutting tool, technical problem to be solved is to make it easy to that the bar proper circle grinds and reduce milling time and can be when the follow-up making of bar, reduce the consumption of expensive wolfram steel material, be very suitable for practicality.
The purpose of this utility model and to solve its technical problem be to adopt following technical scheme to realize.Combined type class bar structure according to a kind of use in printed circuit board cutting tool that the utility model proposes, its weld part and stainless steel material base material portion by the wolfram steel material is formed, weld part one end is the centre that is fixed in an end of base material portion with welding manner, and weld part diameter and length are less than the diameter of base material portion and length, are formed with solder side between base material portion and the weld part.
The purpose of this utility model and solve its technical problem and can also be able to be further achieved by the following technical measures.
The combined type class bar structure of aforesaid use in printed circuit board cutting tool, wherein the diameter ratio is 1/5～3/5 between weld part and the base material portion.
The combined type class bar structure of aforesaid use in printed circuit board cutting tool, wherein the length ratio is 1/10～1/2 between weld part and the base material portion.
The combined type class bar structure of aforesaid use in printed circuit board cutting tool, wherein the section of weld part and base material portion is a proper circle.
The combined type class bar structure of aforesaid use in printed circuit board cutting tool, wherein the section of weld part and base material portion is approximate proper circle shape.
The combined type class bar structure of aforesaid use in printed circuit board cutting tool, wherein the junction of base material portion and weld part is formed with the tapering.
The combined type class bar structure of aforesaid use in printed circuit board cutting tool wherein is formed with the connecting portion isometrical with weld part between tapering and the weld part.
The combined type class bar structure of aforesaid use in printed circuit board cutting tool, wherein the cross dimensions of solder side is the bar footpath greater than weld part.
The utility model compared with prior art has tangible advantage and beneficial effect.Via as can be known above, in order to achieve the above object, the utility model provides a kind of combined type class bar structure of use in printed circuit board cutting tool, wherein bar is made up of the weld part of wolfram steel material and the base material portion of stainless steel material, and an end of weld part is the centre that is fixed in an end of base material portion with welding manner;
By technique scheme, the combined type class bar structure of the utility model use in printed circuit board cutting tool has following advantage and beneficial effect at least:
Weld part diameter and length are less than the diameter of base material portion and length, diameter by weld part and base material portion compares difference, and make bar at the follow-up proper circle that carries out when grinding, emery wheel only can grind the material that is mated, promptly only weld part or base material portion are ground, reduce the difficulty of grinding the bar out of roundness whereby, and can make to have preferable out of roundness through the bar that grinds, promptly each section of weld part or base material portion can grind to form the following proper circle shape of 1 μ mm;
And owing to use diameter and length is little weld part than base material portion all, makes lacking that expensive wolfram steel material is consumed that the waste that is produced during production just can reduce, and the expenditure of relative cost will reduce, and its profit is promoted.
In sum, the utility model is a kind of combined type class bar structure of use in printed circuit board drill bit, wherein bar is made up of the weld part of wolfram steel material and the base material portion of stainless steel material, one end of weld part is the centre that is fixed in an end of base material portion with welding manner, and weld part diameter and length are less than the diameter of base material portion and length, because using diameter and length is little weld part than base material portion all, can reduce the advantage of required time and low material cost when the processing and forming compared to traditional integral formula tungsten carbide bar.The utlity model has above-mentioned plurality of advantages and practical value, no matter it all has bigger improvement on product structure or function, obvious improvement is arranged technically, and produced handy and practical effect, and more existing use in printed circuit board drill rod structure has the outstanding effect of enhancement, thereby being suitable for practicality more, and having the extensive value of industry, really is a new and innovative, progressive, practical new design.
Above-mentioned explanation only is the general introduction of technical solutions of the utility model, for can clearer understanding technological means of the present utility model, and can be implemented according to the content of specification, and for above-mentioned and other purposes, feature and advantage of the present utility model can be become apparent, below especially exemplified by preferred embodiment, and conjunction with figs., be described in detail as follows.
Description of drawings
Fig. 1 is the plane graph that interconnects of the weld part of first embodiment of the present utility model and base material portion.
Fig. 2 is the weld part of first embodiment of the present utility model and the plane graph that interconnects of the base material portion with tapering.
Fig. 3 is the stereoscopic figure after first embodiment of the present utility model makes drill bit.
Fig. 4 is the weld part of second embodiment of the present utility model and the plane graph that interconnects of the base material portion with tapering and connecting portion.
Fig. 5 is the stereoscopic figure after second embodiment of the present utility model makes drill bit.
Fig. 6 be the 3rd embodiment of the present utility model weld part and base material portion with tapering be not connected plane graph as yet.
Fig. 7 is the weld part of the 3rd embodiment of the present utility model and the plane graph that interconnects of the base material portion with tapering.
Fig. 8 is the plane graph of existing bar.
Fig. 9 is the stereoscopic figure after existing bar is made drill bit.
10: base material portion 11: solder side
12: tapering 20: weld part
21: cutting portion 22: lines
30: base material portion 31: solder side
32: tapering 33: connecting portion
40: weld part 41: cutting portion
50: base material portion 51: tapering
52: solder side 60: weld part
60: base material portion 61: solder side
70: base material portion 71: solder side
80: weld part 81: tapering
82: cutting portion
Embodiment
For further setting forth the utility model is to reach technological means and the effect that predetermined goal of the invention is taked, below in conjunction with accompanying drawing and preferred embodiment, to combined type class its embodiment of bar structure, structure, feature and effect thereof according to the use in printed circuit board cutting tool that the utility model proposes, describe in detail as after.
Seeing also shown in Figure 1ly, is the combined type class bar structure of the utility model use in printed circuit board cutting tool:
Bar is by stainless steel material and have the direct rod shape base material portion 10 of suitable diameter and length and formed with wolfram steel material and direct rod shape weld part 20 with suitable diameter and length, and these weld part 20 diameters and length are all little than base material portion 10 diameters and length;
An end centre and the mutual solid welding in weld part 20 1 ends with base material portion 10 are formed with solder side 11 between base material portion 10 and weld part 20, and can form a bar through the base material portion 10 of mutual solid welding with weld part 20;
The diameter ratio is 1/5～3/5 between aforesaid weld part 20 and the base material portion 10, and the length ratio is 1/10～1/2 between weld part 20 and the base material portion 10.
With above-mentioned bar structure, the diameter of weld part 20 and length are less than the diameter of base material portion 10 and length, bar is placed in when grinding in the board, because weld part 20 differs quite big with the diameter of base material portion 10, so emery wheel only can contact homogenous material, and grind the material that is mated, therefore only can grind weld part 20 or base material portion 10 separately, can not be ground to base material portion 10 so grind the emery wheel of weld part 20, perhaps, the emery wheel that grinds base material portion 10 can not grind weld part 20, and then can make bar (even each section of weld part 20 and base material portion 10 can grind to form proper circle or approximate proper circle shape, make bar grind summary whereby, and make weld part 20 and base material portion 10 can have preferable out of roundness.
Please cooperate consult shown in Figure 2, for bar structure following process of the present utility model is made first kind of embodiment of use in printed circuit board drill bit process:
The bar that the utility model is passed through grinding utilizes lapping mode to make the end of its base material portion 10 be formed with tapering 12 in the junction of base material portion 10 with weld part 20, and after tapering 12 formed, aforesaid solder side 11 was between tapering 12 and weld part 20;
Please cooperate consult shown in Figure 3, again weld part 20 is carried out the processing procedure of cutting portion 21, make its weld part 20 have the lines 22 that can bore, cut, because weld part 20 is made with less material compared to base material portion 10, so when making cutting portion 21, weld part 20 only can be cut down a spot of wolfram steel, so for making the production firm of drill bit, it is few more that expensive wolfram steel is consumed, and the waste that its production procedure produced promptly can decrease, so the expenditure of its cost will reduce.
Please cooperate and consult Fig. 4 and shown in Figure 5, for the made bar structure following process of the utility model is made second kind of embodiment of use in printed circuit board drill bit process:
Present embodiment is that the tapering 12 at the base material portion 10 of Fig. 2 is changed, in the present embodiment, the end of weld part 40 is the places, end that are welded in base material portion 30, so between weld part 40 and base material portion 30, can be formed with solder side 31, in base material portion 30, form tapering 32 in addition, and tapering 32 is near solder side 31 positions, between tapering 32 and weld part 40, be formed with the connecting portion 33 isometrical with weld part 40, connecting portion 33 is the further extension in tapering 32, be connecting portion 33 with tapering 32 be to be positioned at the place, end of base material portion 30 and adjacent to weld part 40, this connecting portion 33 is when grinding tapering 32, further the undergauge grinding forms, so make connecting portion 33 be equal to the diameter of weld part 40, the usefulness of this connecting portion 33 is intended to shorten the length of weld part 40, so can make weld part 40 to make of less material, at this moment, aforesaid solder side 31 is between connecting portion 33 and weld part 40;
Please cooperate and consult shown in Figure 5ly, when making cutting portion 41 according to Fig. 4, weld part 40 also can consume less material, and then reaches the effect of saving.
Please cooperate and consult Figure 6 and Figure 7, for the made bar following process of the utility model is made the third embodiment of use in printed circuit board drill bit process:
Present embodiment is that the base material portion 10 at Fig. 1 is changed, in the present embodiment, a tapering 51 can be ground out in one end of base material portion 50, end in this tapering 51 away from base material portion 50 is formed with a solder side 52, this solder side 52 is to be used for solid welding weld part 60, and the cross dimensions of solder side 52 is the bar footpaths greater than weld part 60, as for follow-up processing and processing procedure, as aforementioned, so do not give unnecessary details.
The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, though the utility model discloses as above with preferred embodiment, yet be not in order to limit the utility model, any those skilled in the art are not in breaking away from the technical solutions of the utility model scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solutions of the utility model, according to technical spirit of the present utility model to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solutions of the utility model.
Claims (10)
1. the combined type class bar structure of a use in printed circuit board cutting tool, its weld part and stainless steel material base material portion by the wolfram steel material is formed, it is characterized in that: weld part one end is the centre that is fixed in an end of base material portion with welding manner, and weld part diameter and length are less than the diameter of base material portion and length, are formed with solder side between base material portion and the weld part.
2. according to the combined type class bar structure of the described use in printed circuit board cutting tool of claim 1, it is characterized in that wherein the diameter ratio is 1/5～3/5 between the weld part and base material portion.
3. according to the combined type class bar structure of claim 1 or 2 described use in printed circuit board cutting tools, it is characterized in that wherein the length ratio is 1/10～1/2 between the weld part and base material portion.
4. according to the combined type class bar structure of the described use in printed circuit board cutting tool of claim 1, it is characterized in that wherein the section of weld part and base material portion is a proper circle.
5. according to the combined type class bar structure of the described use in printed circuit board cutting tool of claim 3, it is characterized in that wherein the section of weld part and base material portion is a proper circle.
6. according to the combined type class bar structure of the described use in printed circuit board cutting tool of claim 1, it is characterized in that wherein the section of weld part and base material portion is approximate proper circle shape.
7. according to the combined type class bar structure of the described use in printed circuit board cutting tool of claim 3, it is characterized in that wherein the section of weld part and base material portion is approximate proper circle shape.
8. the combined type class bar structure of use in printed circuit board cutting tool according to claim 1 is characterized in that wherein the junction of base material portion and weld part is formed with the tapering.
9. the combined type class bar structure of use in printed circuit board cutting tool according to claim 8 is characterized in that wherein being formed with the connecting portion isometrical with weld part between the tapering and weld part.
10. the combined type class bar structure of use in printed circuit board cutting tool according to claim 9 is characterized in that the cross dimensions of solder side wherein is the bar footpath greater than weld part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201436742U CN201044539Y (en) | 2007-04-27 | 2007-04-27 | Composite level bar structure of cutting tools for printed circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201436742U CN201044539Y (en) | 2007-04-27 | 2007-04-27 | Composite level bar structure of cutting tools for printed circuit board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201044539Y true CN201044539Y (en) | 2008-04-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201436742U Expired - Fee Related CN201044539Y (en) | 2007-04-27 | 2007-04-27 | Composite level bar structure of cutting tools for printed circuit board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201044539Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114042970A (en) * | 2021-10-27 | 2022-02-15 | 南阳鼎泰高科有限公司 | PCB cutter and preparation method thereof |
-
2007
- 2007-04-27 CN CNU2007201436742U patent/CN201044539Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114042970A (en) * | 2021-10-27 | 2022-02-15 | 南阳鼎泰高科有限公司 | PCB cutter and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080402 Termination date: 20100427 |