CN204975447U - High accuracy spot facing work drill bit - Google Patents
High accuracy spot facing work drill bit Download PDFInfo
- Publication number
- CN204975447U CN204975447U CN201520703903.6U CN201520703903U CN204975447U CN 204975447 U CN204975447 U CN 204975447U CN 201520703903 U CN201520703903 U CN 201520703903U CN 204975447 U CN204975447 U CN 204975447U
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- CN
- China
- Prior art keywords
- face
- chisel edge
- major
- flank
- knife
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000003754 machining Methods 0.000 claims abstract description 15
- 238000002161 passivation Methods 0.000 claims abstract description 11
- 238000005520 cutting process Methods 0.000 claims abstract description 10
- 238000005553 drilling Methods 0.000 claims description 14
- 238000005555 metalworking Methods 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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- Drilling Tools (AREA)
Abstract
The utility model provides a high accuracy spot facing work drill bit relates to metalworking cutter field, and its centering ability and machining precision are high, long service life, the technical scheme of the utility model including cutter main part and handle of a knife, in the cutter main part behind main cutting edge, rake face, major first flank, second knife face, chisel edge, tooth clearance and chip groove, cutter main part terminal surface is equipped with two main smear metal sword to cutter main part end face centre is central symmetry and distributes, and the rake face and the chip groove intercommunication of main smear metal sword, back knife face divide into knife face behind major first flank and the second, the seriate, cutter main part end face centre is located to the chisel edge, two the intersecting line of knife face is connected with the chisel edge respectively behind major first flank and the second, divide into the three -section with the chisel edge, the tooth clearance outward flange is through passivation treating.
Description
Technical field
The utility model relates to metal working tool, is specifically related to a kind of high-precision hole-machining drilling head.
Background technology
For the requirement of current drilling tool perforation processing industry for perforation high accuracy, single hole low cost, more and more higher to tool sharpening perforation precision, life requirements.
Because current drilling tool industry is when inserted hole carbide button, there is certain value of interference fit according to the requirement of inserted technique.Under the prerequisite of this value of interference fit, have strict requirement to perforation hole tolerance scope, general hole tolerance is 0.02mm to the maximum, requires higher even to control in 0.01mm.In this case, except requiring strictly to control, except tool blade footpath, also to need improvement of cutter structure according to the aperture amount of expansion of different machined material, improving cutter centering ability, reducing the deviation from circular from of perforation.Avoid occurring causing processing perforation overproof of aperture because of cutter centering ability.
Before 2010, after most drilling tool producer all adopts plain radial drilling subdrilling, hinge mode processes perforation, and this processing mode not only working (machining) efficiency is low, and processing perforation is of poor quality.After 2010, most of drilling tool producer uses machining center to carry out perforation processing successively, substantially increases working (machining) efficiency.Along with the solid carbide supporting with machining center uses, drilling tool producer more and more payes attention to the single hole cost of cutter, therefore, as cutter manufacture producer, then needs to improve constantly cutter life, meets the low cost requirement of drilling tool producer.
Utility model content
The utility model provides a kind of high-precision hole-machining drilling head, its centering ability and machining accuracy high, long service life.
The technical solution of the utility model is: comprise cutter body and handle of a knife, described cutter body includes main cutting edge, rake face, major first flank, knife face after second, chisel edge, backlash and chip area, described cutter body end face is provided with two described main cutting edges, symmetrical centered by cutter body end face center, the rake face of main cutting edge is communicated with chip area, rear knife face is divided into major first flank and the second rear knife face, arrange in turn, described chisel edge is located at cutter body end face center, article two, described major first flank is connected with chisel edge respectively with the intersection of knife face after second, chisel edge is divided into three sections, described backlash outward flange is through Passivation Treatment.
Preferred as such scheme, the chisel edge section length after two described major first flanks and second between knife face intersection is less than or equal to 0.06 ㎜.
Preferred as such scheme, described backlash passivation width 0.02 ~ 0.03 ㎜ less of main sword passivation width.
Preferred as such scheme, the angle of described backlash passive surface and rake face is not more than 17 °.
The beneficial effects of the utility model are: relative to existing drill bit capable of machining hole, and described in this utility model, the chisel edge intensity of drill bit capable of machining hole is higher, and centering ability is stronger, and the contact area of apex point and workpiece is larger, to improve machining accuracy and crudy; Improve backlash wear form simultaneously, extend the service life of drill bit.
Accompanying drawing explanation
Fig. 1 is front view of the present utility model.
Fig. 2 is left view of the present utility model.
Fig. 3 is the close-up schematic view at X place in Fig. 2.
Fig. 4 is the close-up schematic view at A place in Fig. 1.
Detailed description of the invention
Embodiment of the present utility model is described in detail below in conjunction with accompanying drawing.
As shown in Figure 1, the structure of the present embodiment comprises cutter body 3 and handle of a knife 4, cutter body 3 includes main cutting edge 1, rake face 5, major first flank 7, knife face 8 after second, chisel edge 10, backlash 2 and chip area 6, cutter body 3 end face is provided with two main cutting edges 1, symmetrical centered by cutter body 3 end face center, the rake face 5 of main cutting edge 1 is communicated with chip area 6, rear knife face is divided into major first flank 7 and the second rear knife face 8, arrange in turn, chisel edge 10 is located at cutter body 3 end face center, article two, major first flank is connected with chisel edge 10 respectively with the intersection 9 of knife face after second, chisel edge 10 is divided into three sections, backlash 2 outward flange, through Passivation Treatment, forms arc passive surface 11.
In the present embodiment, the chisel edge section length after two described major first flanks and second between knife face intersection 9 is less than or equal to 0.06 ㎜.Backlash 2 passivation width 0.02 ~ 0.03 ㎜ less of main sword passivation width.The angle of backlash passive surface and rake face is not more than 17 °.
In said structure, after major first flank and second, chisel edge is divided into three sections by knife face intersection, its intersection is played a supporting role to chisel edge from the side, improve the intensity of chisel edge, also improve the centering ability of drill bit simultaneously, and when processing perforation, also effectively can increase the contact area of apex point and workpiece, improve crudy and working (machining) efficiency.
In said structure, because backlash has done the Passivation Treatment of one fixed width, therefore carrying out adding man-hour, the wearing and tearing of backlash away from backlash edge, can extend the wearing-in period of backlash with this, improve the service life of drill bit.
Claims (4)
1. a high-precision hole-machining drilling head, it is characterized in that: comprise cutter body and handle of a knife, described cutter body includes main cutting edge, rake face, major first flank, knife face after second, chisel edge, backlash and chip area, described cutter body end face is provided with two described main cutting edges, symmetrical centered by cutter body end face center, the rake face of main cutting edge is communicated with chip area, rear knife face is divided into major first flank and the second rear knife face, arrange in turn, described chisel edge is located at cutter body end face center, article two, described major first flank is connected with chisel edge respectively with the intersection of knife face after second, chisel edge is divided into three sections, described backlash outward flange is through Passivation Treatment.
2. high-precision hole-machining drilling head according to claim 1, is characterized in that: the chisel edge section length after two described major first flanks and second between knife face intersection is less than or equal to 0.06 ㎜.
3. high-precision hole-machining drilling head according to claim 1, is characterized in that: described backlash passivation width 0.02 ~ 0.03 ㎜ less of main sword passivation width.
4. high-precision hole-machining drilling head according to claim 1, is characterized in that: the angle of described backlash passive surface and rake face is not more than 17 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520703903.6U CN204975447U (en) | 2015-09-11 | 2015-09-11 | High accuracy spot facing work drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520703903.6U CN204975447U (en) | 2015-09-11 | 2015-09-11 | High accuracy spot facing work drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204975447U true CN204975447U (en) | 2016-01-20 |
Family
ID=55109867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520703903.6U Expired - Fee Related CN204975447U (en) | 2015-09-11 | 2015-09-11 | High accuracy spot facing work drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204975447U (en) |
-
2015
- 2015-09-11 CN CN201520703903.6U patent/CN204975447U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20160120 |