CN203140848U - ID type oversized large-headed drill special for printed circuit board (PCB) - Google Patents
ID type oversized large-headed drill special for printed circuit board (PCB) Download PDFInfo
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- CN203140848U CN203140848U CN 201320030730 CN201320030730U CN203140848U CN 203140848 U CN203140848 U CN 203140848U CN 201320030730 CN201320030730 CN 201320030730 CN 201320030730 U CN201320030730 U CN 201320030730U CN 203140848 U CN203140848 U CN 203140848U
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- pcb
- changeover portion
- bores
- super large
- diameter
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Abstract
The utility model discloses an ID type oversized large-headed drill special for a printed circuit board (PCB). The ID type oversized large-headed drill special for the PCB comprises a drill body and a handle connected with the drill body, wherein the outer diameter of the drill body is the same as the inner diameter of a positioning hole or an installing and fixing hole of the PCB. The handle comprises a standard section and a transition structure arranged at the front end of the standard section and directly connected with the drill body. Due to the fact that the drill body with the same diameter as the positioning hole or the installing and fixing hole of the PCB is used, an enveloping mode is not required during the machining of the positioning hole or the installing and fixing hole of the PCB, the machining of the positioning hole or the installing and fixing hole can be finished only through one-time drilling and is high in efficiency compared with the enveloping mode, residual volume caused by the enveloping-mode machining is not produced during the machining by means of other modes, and the machining accuracy is high. In addition, the transition structure is arranged at the connecting position of the handle and the drill body, so that a cutter breaking phenomenon occurred during working of the drill can be decreased.
Description
Technical field
The utility model relates to the cutter manufacture field, in particular, relates to a kind of PCB special I D type super large head and bores.
Background technology
In the process of PCB, the locating hole of PCB or install and fix the hole and use special-purpose ID type major part as shown in Figure 1 to bore (being also referred to as anti-step bores) to process, but the processing external diameter that ID type major part bores is generally below 6.5mm.
Shown in Fig. 2 a and 2b, when the aperture of needs processing during greater than 6.5mm, then need to use the ID type drill bit of less external diameter to adopt the bore mode of envelop-type, envelope goes out the hole greater than ID type outside diameter.But external diameter needs to bore several even tens holes greater than the hole of 6.5mm, just can go out needed large aperture profile by envelope; And single hole processing realizes that by the overlapping processing of porous its process will be at double, and its operation process still is that programming step is all more loaded down with trivial details; In addition, the large aperture that is gone out by several aperture envelopes, always there is the residual volume of dash area as shown in the figure on the profile, the residual volume volume reduces with the increase of the little hole count of envelope, but always exist, and working (machining) efficiency also can decrease, and the inevitable manufacturing deficiency of mode makes the contour shape precision have big defective for this reason.
The utility model content
Technical problem to be solved in the utility model provides a kind of drilling efficiency height, precision is good and structural strength preferably PCB special I D type super large head bore.
The purpose of this utility model is achieved through the following technical solutions: a kind of PCB special I D type super large head bores, and comprises the handle that bores body and is connected with described brill body directly, and the external diameter of described brill body is with the locating hole of described PCB or install and fix the hole internal diameter and equate; Described handle directly comprises: standard paragraphs and be arranged on the standard paragraphs front end and the direct-connected transition structure of described brill body.
Preferably, described transition structure is to be arranged at least one section diameter of described standard paragraphs front end greater than the changeover portion of described standard paragraphs diameter, and by the front end direction caudad in handle footpath, the diameter of each section changeover portion reduces gradually.
Preferably, the diameter difference between the described changeover portion is 0.5 ~ 5.0mm.Reduce the shearing force between the changeover portion, improve the intensity of transition structure.
Preferably, the junction of described changeover portion and described standard paragraphs is provided with conical surface transition portion, carries out transition by the conical surface between described changeover portion and the standard paragraphs.Utilize the conical surface to make implementation structure transition between changeover portion and the standard paragraphs, avoid directly sending the transitional structure sudden change, thereby can reduce shearing force, increase the structural strength in handle footpath.
Preferably, be provided with conical surface transition portion between described changeover portion and the changeover portion, carry out transition by the conical surface between described changeover portion and the changeover portion.
Preferably, the tapering of the described conical surface is 10 ~ 60 °.Select suitable conical surface tapering so that can keep structural strength after the structural change.
Preferably, the leading portion of described standard paragraphs only arranges one section changeover portion, is provided with conical surface transition portion between described changeover portion and the described standard paragraphs, carries out transition by the conical surface between described changeover portion and the described standard paragraphs.The general diameter of drill bit of PCB processing is less, one section changeover portion and conical surface transition portion ratio only is set is easier to processing.
Preferably, the difference of the diameter of the brill body external diameter changeover portion direct-connected with it of described ID type super large head brill is 0.5 ~ 7.5mm.Select the mutational range between the transition structure of suitable brill body and handle footpath, thereby guarantee to bore the structural strength of the junction between body and the handle footpath, reduce the shearing force at this place.
Preferably, the brill body external diameter of described ID type super large head brill is greater than 6.5mm.
The method that a kind of manufacturing as above-mentioned arbitrary described PCB special I D type super large head bore comprises step: S1, processing blank, make brill body and handle footpath, and described handle directly comprises transition structure and standard paragraphs; S2, boring fluting, sharpening on one's body.
The utility model is for the locating hole that reaches disposable processing PCB or install and fix the hole, has proposed PCB special I D type super large head and has bored, the equal and opposite in direction that it bores external diameter and the locating hole of body or installs and fixes the hole; Owing to used with the locating hole of PCB or installed and fixed the brill body of hole equal diameter, do not need to adopt the mode of envelope to process at the locating hole of processing PCB or when installing and fixing the hole, the only processing that need once hole and to finish locating hole or install and fix the hole, it is with respect to the mode of envelope, efficient is higher, the residual volume that envelop-type processing produces can not appear in the mode of its processing yet, thereby the precision of its processing is also higher.Simultaneously, (it is less that PCB processes the used tool diameter of professional lathe in order to make described PCB special I D type super large head bore to be applicable to the special purpose machine tool of PCB processing, corresponding handle footpath is also very little), the diameter in its handle footpath is not made change, but be provided with transition structure in handle footpath and the junction of boring body, utilize transition structure to reduce to bore body to the structural mutation in handle footpath, can reduce to bore body and the junction in handle footpath and near shearing force thereof like this, when working, can reduce the phenomenon of breaking at drill bit.
Description of drawings
Fig. 1 is that PCB special I D type major part of the prior art bores,
Fig. 2 uses PCB special I D type major part to bore the schematic diagram in fixed processing hole in the prior art,
Fig. 3 is the workpiece structure chart that the PCB special I D type super large head of the utility model embodiment one bores,
Fig. 4 is the structure chart that the PCB special I D type super large head of the utility model embodiment one bores,
Fig. 5 is the structure chart that the PCB special I D type super large head of the utility model embodiment two bores,
Fig. 6 is the structure chart that the PCB special I D type super large head of the utility model embodiment three bores.
Wherein: 100, bore body, 200, the handle footpath, 210, standard paragraphs, 220, transition structure, 221, changeover portion, 222, conical surface transition portion.
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing and preferred embodiment.
Bore as Fig. 4-Figure 6 shows that PCB special I D type super large head described in the utility model, it comprises the brill body 100 of super large external diameter and the handle that is connected with described brill body footpath 200, the locating hole of the external diameter of described brill body 100 and PCB to be processed or install and fix the hole internal diameter and equate; Do not need to adopt the mode of envelope to process at the locating hole of processing PCB or when installing and fixing the hole like this, the only processing that need once hole and to finish locating hole or install and fix the hole, it is with respect to the mode of envelope, efficient is higher, the residual volume that envelop-type processing produces can not appear in the mode of its processing yet, thereby the precision of its processing is also higher.Described handle footpath 200 comprises: standard paragraphs 210 and be arranged on standard paragraphs 210 front ends and described brill body 100 direct-connected transition structures 220, the diameter of described standard paragraphs 210 is identical with the standard shank diameter directly that PCB processes the employed drill bit of professional lathe.
Embodiment one
The PCB special I D type super large head that is illustrated in figure 4 as present embodiment bores, and it comprises the brill body 100 of super large external diameter and the handle that is connected with described brill body directly 200, the locating hole of the external diameter of described brill body 100 and PCB to be processed or install and fix the hole internal diameter and equate; Described handle footpath 200 comprises: standard paragraphs 210 and be arranged on standard paragraphs 210 front ends and described brill body 100 direct-connected transition structures 220.Transition structure 220 is for to be arranged on one section diameter of described standard paragraphs 210 front ends greater than the changeover portion 221 of the diameter of described standard paragraphs 210, described changeover portion 221 forms hierarchic structure with the structure counterweight of standard paragraphs 210 in the handle footpath, changeover portion 221 carries out the transition to the brill body 100 of super large external diameter the external diameter of the described standard paragraphs 210 identical with standard shank footpath diameter gradually, rather than transitted directly to than minor diameter by big external diameter, thereby be conducive to reduce ID type major part and be drilled in body and handle junction, footpath and near shearing force thereof, the breaking probability when also just being conducive to reduce drill bit work.
In the present embodiment, the difference of the size of the external diameter of brill body 100 and the external diameter of described changeover portion 221 is 0.5 ~ 7.5mm, select the structural mutation scope between the changeover portion of suitable brill body and handle footpath, thereby guarantee to bore the structural strength of the junction between body 100 and the handle footpath 200, reduce the shearing force at this place, make the shearing force at this place can be in the shearing force scope that can bear when drill bit is worked.
In the present embodiment, the conical surface transition portion 222 that is provided with between changeover portion 221 and the standard paragraphs 210, carry out transition by the conical surface between described changeover portion 221 and the standard paragraphs 210, can reduce junction between changeover portion 221 and the standard paragraphs 210 and near shearing force thereof like this, thereby improve the structural strength at this place.The tapering of the described conical surface is 10 ~ 60 °, selects suitable conical surface tapering so that can keep corresponding structural strength after the structural change.
The procedure of processing that the ID type super large head of the PCB special use of present embodiment bores is as follows:
S1, blank is processed into as shown in Figure 3 workpiece structure, this workpiece is provided with brill body and the handle footpath of unslotted and sharpening, and described handle directly comprises changeover portion and standard paragraphs;
S2, between changeover portion and standard paragraphs, process the conical surface, boring fluting and sharpening on one's body then.
Embodiment two
Different with embodiment one is, as shown in Figure 5, the diameter of the brill body 100 that the PCB special I D type super large head in the present embodiment bores and the diameter difference between the standard paragraphs 210 are greater than embodiment one, thereby, front end in handle footpath 200 is provided with two sections changeover portions 221, by the front end direction caudad in handle footpath 200, the diameter of changeover portion 221 reduces gradually, and the diameter difference between two sections changeover portions is 0.5 ~ 5.0mm.Like this, can guarantee the structural strength of drill bit by the quantity that increases changeover portion 221, reduce the probability of its breaking.Certainly, the length of changeover portion 221 also will be chosen in suitable scope, is unlikely to excessive to avoid the feasible body 100 that bores to the structural mutation between the standard paragraphs 210, and then reduces the shearing force of transition structure part.Can understand by present embodiment two, it is poor with the diameter that adapts to bigger brill body and handle footpath that the front end in the handle footpath can arrange more changeover portion.
Embodiment three
As shown in Figure 6, what present embodiment and embodiment two were different is also to be provided with conical surface transition portion 222 between the changeover portion 221, and conical surface transition portion 222 also is set between changeover portion 221 and the standard paragraphs 210, can further reduce structural mutation like this, thereby further reduce shearing force.Breaking probability when reducing drill bit work.
Above content be in conjunction with concrete preferred embodiment to further describing that the utility model is done, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, under the prerequisite that does not break away from the utility model design, can also make some simple deduction or replace, all should be considered as belonging to protection domain of the present utility model.
Claims (9)
1. a PCB special I D type super large head bores, and comprises the handle that bores body and is connected with described brill body directly, and the external diameter of described brill body is with the locating hole of described PCB or install and fix the hole internal diameter and equate; It is characterized in that described handle directly comprises: standard paragraphs and be arranged on the standard paragraphs front end and the direct-connected transition structure of described brill body.
2. PCB special I D type super large head as claimed in claim 1 bores, it is characterized in that, described transition structure is to be arranged at least one section diameter of described standard paragraphs front end greater than the changeover portion of described standard paragraphs diameter, and by the front end direction caudad in handle footpath, the diameter of each section changeover portion reduces gradually.
3. PCB special I D type super large head as claimed in claim 2 bores, and it is characterized in that the diameter difference between the described changeover portion is 0.5 ~ 5.0mm.
4. PCB special I D type super large head as claimed in claim 2 bores, and it is characterized in that the junction of described changeover portion and described standard paragraphs is provided with conical surface transition portion, carries out transition by the conical surface between described changeover portion and the standard paragraphs.
5. PCB special I D type super large head as claimed in claim 2 bores, and it is characterized in that described changeover portion comprises at least two sections, is provided with conical surface transition portion between described changeover portion and the changeover portion, carries out transition by the conical surface between described changeover portion and the changeover portion.
6. bore as claim 4 or 5 described PCB special I D type super large heads, it is characterized in that the tapering of the described conical surface is 10 ~ 60 °.
7. PCB special I D type super large head as claimed in claim 2 bores, it is characterized in that, the leading portion of described standard paragraphs only arranges one section changeover portion, is provided with conical surface transition portion between described changeover portion and the described standard paragraphs, carries out transition by the conical surface between described changeover portion and the described standard paragraphs.
8. PCB special I D type super large head as claimed in claim 2 bores, and it is characterized in that, the difference of the diameter of the brill body external diameter changeover portion direct-connected with it that described ID type super large head bores is 0.5 ~ 7.5mm.
9. PCB special I D type super large head as claimed in claim 1 bores, and it is characterized in that, the brill body external diameter that described ID type super large head bores is greater than 6.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320030730 CN203140848U (en) | 2013-01-21 | 2013-01-21 | ID type oversized large-headed drill special for printed circuit board (PCB) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320030730 CN203140848U (en) | 2013-01-21 | 2013-01-21 | ID type oversized large-headed drill special for printed circuit board (PCB) |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203140848U true CN203140848U (en) | 2013-08-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320030730 Expired - Lifetime CN203140848U (en) | 2013-01-21 | 2013-01-21 | ID type oversized large-headed drill special for printed circuit board (PCB) |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203140848U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103071834A (en) * | 2013-01-21 | 2013-05-01 | 深圳市金洲精工科技股份有限公司 | Special ID (Inverse Drill)-type extra-large drill bit for PCB (Printed Circuit Board) and manufacturing method of special ID-type extra-large drill bit |
-
2013
- 2013-01-21 CN CN 201320030730 patent/CN203140848U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103071834A (en) * | 2013-01-21 | 2013-05-01 | 深圳市金洲精工科技股份有限公司 | Special ID (Inverse Drill)-type extra-large drill bit for PCB (Printed Circuit Board) and manufacturing method of special ID-type extra-large drill bit |
| CN103071834B (en) * | 2013-01-21 | 2015-05-20 | 深圳市金洲精工科技股份有限公司 | Special ID (Inverse Drill)-type extra-large drill bit for PCB (Printed Circuit Board) and manufacturing method of special ID-type extra-large drill bit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130821 |