CN203578866U - Head-replaceable hard alloy taper shank twist drill - Google Patents
Head-replaceable hard alloy taper shank twist drill Download PDFInfo
- Publication number
- CN203578866U CN203578866U CN201320763401.3U CN201320763401U CN203578866U CN 203578866 U CN203578866 U CN 203578866U CN 201320763401 U CN201320763401 U CN 201320763401U CN 203578866 U CN203578866 U CN 203578866U
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- CN
- China
- Prior art keywords
- drill
- hole
- thread
- head
- hard alloy
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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
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Abstract
The utility model discloses a twist drill and particularly relates to a head-replaceable hard alloy taper shank twist drill. The head-replaceable hard alloy taper shank twist drill comprises a drill body and a drill shank, wherein a detachable drill bit is arranged at the top of the drill body; a thread hole is formed in the top of the drill body and a thread through hole is formed in the side wall of the thread hole; a positioning block which is matched with the thread hole is formed in the rear end of the drill bit; a thread is arranged on the outer wall of the positioning block; the positioning block is provided with a thread blind hole matched with the thread through hole; the drill body and the drill head are fixedly connected by the positioning block and the thread hole; the drill body and the drill head are positioned and connected by the thread through hole and the thread blind hole. According to the head-replaceable hard alloy taper shank twist drill, the structural design combines thread connection and screw connection, so that the stability and the precision of a detachable structure are guaranteed to the greatest extent and the positioning error is reduced.
Description
Technical field
The utility model relates to a kind of fluted drill, relates in particular to a kind of head-changeable hard alloy taper drill.
Background technology
At present, conventional taper drill mostly is integral structure, and drill bit, the drillstock that bores body and have a Morse's taper form a whole.Due to this non-dismountable structure, when drill bit blade occurs after wearing and tearing, just need to carry out again sharpening or replacing facing to whole fluted drill.And modern processing requires to use the materials such as carbide alloy to cutter, whole replacing of boring not only increases user's cost, and has wasted material.Therefore consider drill bit to be made into independent dismountable unit form with boring body, i.e. " head-exchangeable " form.Therefore how but demountable structure often exists the problems such as structural instability, position error, the taper drill of good, the stabilized structure of processability, head-changeable becomes the personage of each side and makes great efforts the problem solving.
Utility model content
Technical problem to be solved in the utility model is to overcome the problems referred to above, and provides a kind of installation simple, constitutionally stable head-changeable hard alloy taper drill.
The technical solution of the utility model is:
A head-changeable hard alloy taper drill, it comprises bores body and drillstock, it is characterized in that: described brill body top is provided with demountable bit; Described brill body top has a screwed hole, on screwed hole sidewall, has tapped through hole; Described drill bit rear end is provided with a locating piece matching with screwed hole, and locating piece outer wall is provided with screw thread, has the tapped blind hole matching with tapped through hole on described locating piece; Described brill body is fixedly connected with screwed hole by locating piece with drill bit, bores body and drill bit and is located by connecting by tapped through hole and tapped blind hole by screw.
The beneficial effects of the utility model are: structural design of the present utility model is fixed with screw in conjunction with being threaded, and has guaranteed dramatically stability and the precision of demountable structure, has reduced position error.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present utility model.
Fig. 2 is fractionation partial structurtes schematic diagram of the present utility model.
The specific embodiment
Now by reference to the accompanying drawings the utility model is further described:
As depicted in figs. 1 and 2, the utility model is a kind of head-changeable hard alloy taper drill, and it comprises bores body 2 and drillstock.Bore body 2 tops and be provided with demountable bit 1.Bore body 2 tops and have a screwed hole 6, these screwed hole 6 sidewalls have tapped through hole 5.Drill bit 1 rear end is provided with a locating piece 3 matching with screwed hole 6, on locating piece 3 outer walls, has screw thread, has the tapped blind hole 4 matching with tapped through hole 5 on locating piece 3.Locating piece 3 is embedded in screwed hole 6, and screwed hole 6 cooperatively interacts with the screw thread on locating piece 3, realizes drill bit 1 and bores being fixedly connected with of body 2.Only has when screw thread mates completely with screwed hole 6 central axes of the central axis of tapped through hole 5 and tapped blind hole 4.Now, screw is embedded in tapped blind hole 4 by tapped through hole 5, carries out double reinforcing.In the present embodiment, when in the situation of heavy wear, can change easily appears in drill bit 1, and bore the parts such as body 2, drillstock, still can normally use, avoided resource and pecuniary waste; The present embodiment is fixed with screw in conjunction with being threaded simultaneously, has guaranteed dramatically stability and the precision of demountable structure, has reduced position error.
Claims (1)
1. a head-changeable hard alloy taper drill, it comprises bores body and drillstock, it is characterized in that: described brill body top is provided with demountable bit; Described brill body top has a screwed hole, on screwed hole sidewall, has tapped through hole; Described drill bit rear end is provided with a locating piece matching with screwed hole, and locating piece outer wall is provided with screw thread, has the tapped blind hole matching with tapped through hole on described locating piece; Described brill body is fixedly connected with screwed hole by locating piece with drill bit, bores body and drill bit and is located by connecting by tapped through hole and tapped blind hole by screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320763401.3U CN203578866U (en) | 2013-11-28 | 2013-11-28 | Head-replaceable hard alloy taper shank twist drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320763401.3U CN203578866U (en) | 2013-11-28 | 2013-11-28 | Head-replaceable hard alloy taper shank twist drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203578866U true CN203578866U (en) | 2014-05-07 |
Family
ID=50576839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320763401.3U Expired - Fee Related CN203578866U (en) | 2013-11-28 | 2013-11-28 | Head-replaceable hard alloy taper shank twist drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203578866U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107225271A (en) * | 2016-03-23 | 2017-10-03 | 江苏天工工具有限公司 | A kind of new high speed steel twist drill |
-
2013
- 2013-11-28 CN CN201320763401.3U patent/CN203578866U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107225271A (en) * | 2016-03-23 | 2017-10-03 | 江苏天工工具有限公司 | A kind of new high speed steel twist drill |
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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: 20140507 Termination date: 20161128 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |