CN204639250U - A kind of Double-head twist drill - Google Patents
A kind of Double-head twist drill Download PDFInfo
- Publication number
- CN204639250U CN204639250U CN201520366283.1U CN201520366283U CN204639250U CN 204639250 U CN204639250 U CN 204639250U CN 201520366283 U CN201520366283 U CN 201520366283U CN 204639250 U CN204639250 U CN 204639250U
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- China
- Prior art keywords
- drill
- model
- drill body
- drillstock
- bit
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- Expired - Fee Related
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Abstract
The utility model relates to a kind of Double-head twist drill, comprises drillstock, drill body A and drill body B; Described drillstock both sides end face respectively has the groove that is convenient to grafting fixed drill bit body, and it has anti-slip tank; Described drill body A and drill body B is plugged on drillstock both sides respectively, it all has some cutting edges and has spiral chip area; The model of described drill body A is M8, and the model of described drill body B is M10.The utility model has the advantage of: the utility model Double-head twist drill drill body and drillstock separately, are convenient for changing drill bit, extend bit operation length; The drill body model at drillstock two ends is two kinds of conventional bit models, can adapt to most instructions for use; Bit-body face has one deck TiAlN coating, can strengthen the wearability of drill bit, improves service life.
Description
Technical field
The utility model relates to a kind of drill bit, particularly a kind of Double-head twist drill.
Background technology
fluted drill is with the instrument of the circular hole of drilling workpiece by the rotary cutting of its relative fixed axis.Be similar to fried dough twist because of its chip pocket curl and gain the name.Helicla flute has 2 grooves, 3 grooves or more groove, but the most common with 2 grooves.Fluted drill can be clamped in manual, electronic hand
Hold on formula boring bar tool or drilling machine, milling machine, lathe and even machining center and use.Drill bit material is generally high-speed tool steel or carbide alloy.
Be mention a kind of Double-head twist drill in the utility model of 201220238225.7 in the patent No., comprise all-in-one-piece drillstock processed and drill body, drill body has spiral chip area, drill body is two, be separately positioned on the two ends of drillstock, drillstock has anti-slip tank, there is following shortcoming in the Double-head twist drill in above-mentioned patent: the Double-head twist drill after the wearing and tearing of two ends, this fluted drill will be discarded.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of Double-head twist drill, and its innovative point is: comprise drillstock, drill body A and drill body B; Described drillstock both sides end face respectively has the groove that is convenient to grafting fixed drill bit body, and it has anti-slip tank; Described drill body A and drill body B is plugged on drillstock both sides respectively, it all has some cutting edges and has spiral chip area.
Further, the model of described drill body A is M8, and the model of described drill body B is M10.
Further, there is one deck TiAlN coating on described drill body A and drill body B surface.
The utility model has the advantage of:
(1) the utility model Double-head twist drill drill body and drillstock separately, are convenient for changing drill bit, extend bit operation length;
(2) the drill body model at drillstock two ends is two kinds of conventional bit models, can adapt to most instructions for use;
(3) bit-body face has one deck TiAlN coating, can strengthen the wearability of drill bit, improves service life.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of a kind of Double-head twist drill of the utility model.
Detailed description of the invention
As shown in Figure 1, the utility model discloses a kind of Double-head twist drill, comprise drillstock 1, drill body A2 and drill body B3; Described drillstock 1 both sides end face respectively has the groove that is convenient to grafting fixed drill bit body, it has anti-slip tank 4; Described drill body A2 and drill body B3 is plugged on drillstock 1 both sides respectively, and it all has some cutting edges 6 and has spiral chip area 5, bit-body face has one deck TiAlN coating, can strengthen the wearability of drill bit, improves service life.
When drill body A2 or drill body B3 damages, only need take off the drill body on drillstock 1, be replaced by new drill body, this Double-head twist drill just can come into operation again, and does not need to purchase in addition; M8 and M10 is more common bit model, and in most drilling operation, the utilization rate of the drill bit of this two type is higher, thus use is more reasonable.
More than show and describe general principle of the present utility model and principal character.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and description just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (3)
1. a Double-head twist drill, its characteristic point is: comprise drillstock, drill body A and drill body B; Described drillstock both sides end face respectively has the groove that is convenient to grafting fixed drill bit body, and it has anti-slip tank; Described drill body A and drill body B is plugged in the groove of drillstock both sides respectively, it all has some cutting edges and has spiral chip area.
2. a kind of Double-head twist drill according to claim 1, its characteristic point is: the model of described drill body A is M8, and the model of described drill body B is M10.
3. a kind of Double-head twist drill according to claim 1, its characteristic point is: there is one deck TiAlN coating on described drill body A and drill body B surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520366283.1U CN204639250U (en) | 2015-06-01 | 2015-06-01 | A kind of Double-head twist drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520366283.1U CN204639250U (en) | 2015-06-01 | 2015-06-01 | A kind of Double-head twist drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204639250U true CN204639250U (en) | 2015-09-16 |
Family
ID=54092029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520366283.1U Expired - Fee Related CN204639250U (en) | 2015-06-01 | 2015-06-01 | A kind of Double-head twist drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204639250U (en) |
-
2015
- 2015-06-01 CN CN201520366283.1U patent/CN204639250U/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 |
Granted publication date: 20150916 Termination date: 20160601 |