CN201735846U - Novel grinding-free drill - Google Patents
Novel grinding-free drill Download PDFInfo
- Publication number
- CN201735846U CN201735846U CN2010202259732U CN201020225973U CN201735846U CN 201735846 U CN201735846 U CN 201735846U CN 2010202259732 U CN2010202259732 U CN 2010202259732U CN 201020225973 U CN201020225973 U CN 201020225973U CN 201735846 U CN201735846 U CN 201735846U
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- CN
- China
- Prior art keywords
- cutting tip
- groove
- alignment pin
- exempting
- fixed
- Prior art date
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Abstract
The utility model discloses a novel grinding-free drill comprising a drill body on which two spiral scrap outlet grooves are arranged. A groove is arranged at the shaft center position at the end of the drill body, a detachable cutting blade is fixed in the groove, a positioning pin hole is arranged at the shaft center position of the drill body at the bottom part of the groove, and the cutting blade is matched with the positioning pin hole through a positioning pin, so as to ensure the radial round jumping precision of the cutting blade after the cutting blade is fixed on the drill body. The novel grinding-free drill adopts reasonable structural design, the positioning hole is arranged at the bottom part of the groove body, and the fixed connection between the cutting blade and the drill body is reinforced by the positioning pin, so as to ensure the radial round jumping precision of the cutting blade after the cutting blade is fixed on the drill body, thereby enhancing the using performance of a drill bit, prolonging the service life of the drill bit and being beneficial for improving the production efficiency.
Description
Technical field
The utility model relates to drill bit, and particularly a kind of alignment pin that is provided with prevents that cutting tip stressed shake novel when cutwork from exempting from abrasive drilling.
Background technology
In the prior art, it is that integrally casting forms traditional drill bit, after drill bit is worn, just need polishing again, the comparison difficulty because drill bit is refaced, and Geju City drill bit of polishing is more taller than the price of buying a green bit, so the user often directly throws away old drill bit later at bit wear, has caused the waste of material and money.A kind of abrasive drilling of exempting from has appearred in mechanical processing industry, it separates manufacturing by boring body with cutting tip, then cutting tip is assembled to the body front end work of boring, it can easily realize the dismounting assembling between the two, overuses when exempting from abrasive drilling, after the cutting tip wearing and tearing, do not need the drill bit of polishing again, can make drill bit recover normal use, overcome the shortcoming of conventional drill by changing cutting tip, need not scrap by whole drill bit, save resource.But, when cutting tip being fixed to after brill uses certain time limit on one's body, because cutting tip can be stressed when processing work, be difficult to guarantee the accuracy of cutting tip radial run-out, with bore body and be connected insecurely, influenced the normal use of drill bit, the service life of shortening drill bit.
The utility model content
The purpose of this utility model is, a kind of novel abrasive drilling of exempting from reasonable in design is provided, at the bottom portion of groove that bores body dowel hole is set, strengthen cutting tip and bore fixedlying connected of body by an alignment pin, guaranteeing that this cutting tip is fixed in bores the accuracy of cutting tip radial run-out after one's death, thereby strengthened the serviceability of drill bit, prolonged the service life of drill bit, helped enhancing productivity.
The technical scheme that the utility model is adopted for achieving the above object is:
A kind of novel abrasive drilling of exempting from, it comprises the brill body, this brill is provided with two spiral flutes on one's body, be provided with a groove in the terminal shaft core position of described brill body, one dismountable cutting tip is fixed in this groove, bore the body shaft core position in described bottom portion of groove and be provided with a location pin-and-hole, described cutting tip cooperates by an alignment pin and described dowel hole, guarantees that this cutting tip is fixed in to bore the accuracy of cutting tip radial run-out after one's death.
As further improvement of the utility model, described cutting tip and alignment pin are formed in one, and described alignment pin is located at this cutting tip bottom surface over against described dowel hole place.
As further improvement of the utility model, the bottom surface of described cutting tip is provided with a location cotter way that cooperates with described dowel hole, described alignment pin one end inserts described dowel hole, and this alignment pin other end snaps in the cotter way of location and prevents the stressed shake when cut workpiece of described cutting tip.
As further improvement of the utility model, the diameter of described dowel hole is identical with the width of described location cotter way.
As further improvement of the utility model, on the two side of described groove, be respectively equipped with a screw that runs through described brill body side face, be provided with two through holes that match with described screw in described cutting tip, described cutting tip is fixed on one's body the brill by screw.
As further improvement of the utility model, described alignment pin is located on the cutting tip axis of rotation of this cutting tip bottom surface.
As further improvement of the utility model, described location cotter way is located on the cutting tip axis of rotation of this cutting tip bottom surface.
The beneficial effects of the utility model are: the utility model reasonable in design, at the bottom portion of groove that bores body dowel hole is set, strengthen cutting tip and bore fixedlying connected of body by an alignment pin, guaranteeing that this cutting tip is fixed in bores the accuracy of cutting tip radial run-out after one's death, thereby strengthened the serviceability of drill bit, prolong the service life of drill bit, help enhancing productivity.
Below in conjunction with accompanying drawing and embodiment, the utility model is further specified.
Description of drawings
Fig. 1 is the structural representation of embodiment 1 of the present utility model;
Fig. 2 is the structural representation of embodiment 2 of the present utility model.
The specific embodiment
Embodiment 1: see Fig. 1, a kind of novel abrasive drilling of exempting from of the utility model, it comprises brill body 1, this brill body 1 is provided with two spiral flutes 11, be provided with a groove 12 in described brill body 1 terminal shaft core position, one dismountable cutting tip 2 is fixed in this groove 12, bore body 1 shaft core position in described groove 12 bottoms and be provided with a location pin-and-hole 13, described cutting tip 2 cooperates by an alignment pin 3 and described dowel hole 13, guarantees that this cutting tip 2 is fixed in to bore body 1 accuracy of cutting tip 2 radial run-outs afterwards.
The bottom surface of described cutting tip 2 is provided with a location cotter way 21 that cooperates with described dowel hole 13, described alignment pin 3 one ends insert described dowel hole 13, and these alignment pin 3 other ends snap in the cotter way 21 of location and prevent the stressed shake when cut workpiece of described cutting tip 2.
The diameter of described dowel hole 13 is identical with the width of described location cotter way 21.
Be respectively equipped with a screw 14 that runs through described brill body 1 side face on the two side of described groove 12, be provided with two through holes 22 that match with described screw 14 in described cutting tip 2, described cutting tip 2 is fixed in by screw and bores on the body 1.
Described location cotter way 21 is located on cutting tip 2 axis of rotation of these cutting tip 2 bottom surfaces
The described cutting tip of this novel patent can adopt the helical cut method to make, and also can adopt the die casting sintering, and methods such as grinding are made.
When using this novel, because screw is fixed to cutting tip 2 in the groove 12 that bores body 1, played well firm effect, again by alignment pin 3 and dowel hole 13, locate cooperating between the cotter way 21, further strengthened the steadiness of cutting tip 2, guaranteed that this cutting tip 2 is fixed in the accuracy of boring body 1 back cutting tip 2 radial run-outs.
Described cutting tip 2 is formed in one with alignment pin 3, and described alignment pin 3 is located at these cutting tip 2 bottom surfaces over against described dowel hole 13 places.
Be respectively equipped with a screw 14 that runs through described brill body 1 side face on the two side of described groove 12, be provided with two through holes 22 that match with described screw 14 in described cutting tip 2, described cutting tip 2 is fixed in by screw and bores on the body 1.
Described alignment pin 3 is located on cutting tip 2 axis of rotation of these cutting tip 2 bottom surfaces.
The described cutting tip of this novel patent can adopt the helical cut method to make, and also can adopt the die casting sintering, and methods such as grinding are made.
When using this novel, because screw is fixed to cutting tip 2 in the groove 12 that bores body 1, played well firm effect, again by cooperating between alignment pin 3 and the dowel hole 13, further strengthened the steadiness of cutting tip 2, guaranteed that this cutting tip 2 is fixed in the accuracy of boring body 1 back cutting tip 2 radial run-outs.
As described in the utility model embodiment, exempt from abrasive drilling with other of the same or similar structure of the utility model are novel, all in the utility model protection domain.
Claims (7)
1. novelly exempt from abrasive drilling for one kind, it comprises the brill body, this brill is provided with two spiral flutes on one's body, it is characterized in that: be provided with a groove in the terminal shaft core position of described brill body, one dismountable cutting tip is fixed in this groove, bore the body shaft core position in described bottom portion of groove and be provided with a location pin-and-hole, described cutting tip cooperates by an alignment pin and described dowel hole, guarantees that this cutting tip is fixed in to bore the accuracy of cutting tip radial run-out after one's death.
2. the novel abrasive drilling of exempting from according to claim 1 is characterized in that described cutting tip and alignment pin are formed in one, and described alignment pin is located at this cutting tip bottom surface over against described dowel hole place.
3. the novel abrasive drilling of exempting from according to claim 1, it is characterized in that, the bottom surface of described cutting tip is provided with a location cotter way that cooperates with described dowel hole, described alignment pin one end inserts described dowel hole, and this alignment pin other end snaps in the cotter way of location and prevents the stressed shake when cut workpiece of described cutting tip.
4. the novel abrasive drilling of exempting from according to claim 3 is characterized in that the diameter of described dowel hole is identical with the width of described location cotter way.
5. according to claim 2 or the 4 described novel abrasive drillings of exempting from, it is characterized in that, on the two side of described groove, be respectively equipped with a screw that runs through described brill body side face, be provided with two through holes that match with described screw in described cutting tip, described cutting tip is fixed on one's body the brill by screw.
6. the novel abrasive drilling of exempting from according to claim 2 is characterized in that described alignment pin is located on the cutting tip axis of rotation of this cutting tip bottom surface.
7. the novel abrasive drilling of exempting from according to claim 3 is characterized in that described location cotter way is located on the cutting tip axis of rotation of this cutting tip bottom surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202259732U CN201735846U (en) | 2010-06-13 | 2010-06-13 | Novel grinding-free drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202259732U CN201735846U (en) | 2010-06-13 | 2010-06-13 | Novel grinding-free drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201735846U true CN201735846U (en) | 2011-02-09 |
Family
ID=43551129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202259732U Expired - Fee Related CN201735846U (en) | 2010-06-13 | 2010-06-13 | Novel grinding-free drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201735846U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102896479A (en) * | 2012-09-17 | 2013-01-30 | 苏茂均 | Method for manufacturing drill bit with cutting tool bit replaceable and product thereof |
-
2010
- 2010-06-13 CN CN2010202259732U patent/CN201735846U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102896479A (en) * | 2012-09-17 | 2013-01-30 | 苏茂均 | Method for manufacturing drill bit with cutting tool bit replaceable and product 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: 20110209 Termination date: 20120613 |