CN203696931U - Fastening device of drill bushing - Google Patents
Fastening device of drill bushing Download PDFInfo
- Publication number
- CN203696931U CN203696931U CN201320797200.5U CN201320797200U CN203696931U CN 203696931 U CN203696931 U CN 203696931U CN 201320797200 U CN201320797200 U CN 201320797200U CN 203696931 U CN203696931 U CN 203696931U
- Authority
- CN
- China
- Prior art keywords
- handle
- drift
- punch
- axle
- drill bushing
- Prior art date
- 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
Abstract
The utility model discloses an improved fastening device of a drill bushing in the technical field of machinery. The fastening device comprises a handle, a mandrel, a punch and fastening screws, wherein the handle adopts a stepped shaft structure, 3 to 10 blind holes are vertically and uniformly distributed on an axis of a small end bottom surface, a through hole is formed in the lateral surface of each of the blind holes, and the mandrel adopts a cylinder structure and is inserted into each of the blind holes of the handle; the punch is connected on the small end outer circumferential surface of the handle, and adopts a tubular structure, the inner circumferential end part of the punch adopts a slope surface, and intersected with the outer circumferential surface of the punch to form an angle Alpha which is 30 to 60 degrees; a threaded hole is formed in the outer surface of the punch, the blind holes are formed in the surface of the mandrel, and nail heads of the fastening screws pass through the through holes of the handle through the threaded hole to be inserted into the blind holes of the mandrel. With the adoption of the structure, the fastening device of the drill bushing disclosed by the utility model is not only simple in structure, and convenient to dismantle, but also capable of conveniently repairing and replacing the punch after being worn to save manufacturing materials, and further can effectively prevent the drilling bushing from loosening and falling off.
Description
Technical field
The utility model relates to a kind of fastener in Machining Technology field, the drill bushing fastener after especially a kind of improvement.
Background technology
Some Element Designs on aircraft have a lot of pilot holes for being connected with other parts, these holes normally process by model, on model due to boring, stud with drill bushing, drill bushing plays location and guiding to drill bit in boring procedure, in the time holing with drill bit, drill bit and drill bushing can produce interaction force, very easily cause drill bushing become flexible and come off, so just affect the precision of boring, in the time that drill bushing comes off loss, just need to reprocess model diamond setting cover again, and then affect the production efficiency of part.Traditional punching pin is structure as a whole, and get depression on model during with punching pin, the punch branch of punching pin produces wearing and tearing, even can produce fracture, in the time that drift goes wrong, cannot repair and change, just cause whole punching pin to be scrapped, and need to again make whole punching pin, so not only waste material, and affected the manufacturing cycle of model, simultaneously because punch shape is unreasonable, on model, get after depression, can not prevent that drill bushing is loosening completely and come off.
Summary of the invention
In order to solve the problem of above-mentioned existence, the utility model provides the drill bushing fastener after a kind of improvement, and this drill bushing fastener is not only simple in structure, and there are wearing and tearing can easy maintenance and replacement, save manufactured materials, can effectively prevent that drill bushing is loosening simultaneously and come off.
The purpose of this utility model is achieved through the following technical solutions:
A kind of drill bushing fastener, it is characterized in that: formed by handle, axle, drift, trip bolt, handle is a kind of multidiameter structure, the axle center, small end bottom surface of handle is provided with blind hole, there is a through hole side of blind hole, the axle of cylindrical structural is inserted in the blind hole of handle, and axle adopts interference fit to be connected with blind hole; On the small end outer circumference surface of handle, interference fit connects drift, and drift is tubular structure, and the inner peripheral end of drift is inclined-plane, and formation а crossing with drift outer circumference surface angle, and а angle is 30
o-60
o; On the outer surface of drift, have a screwed hole, be provided with blind hole on axle surface, the ailhead of trip bolt passes the through hole of handle by screwed hole, is inserted in the blind hole of axle;
On described axle outer circumference surface, be vertically evenly distributed with 3-10 blind hole.
The utility model adopts said structure, simple in structure, with low cost, be convenient to dismounting, after drift weares and teares, can sharpening and replacing, and save manufactured materials; By axle, drill bushing fastener is carried out to centralized positioning, use with the inclined-plane of nose of punch and get depression on the model of drill bushing surrounding, because the cone angle structure of drift plays certain clamping action to drill bushing, can effectively prevent that drill bushing is loosening and come off.
Brief description of the drawings
Fig. 1 is the front view of drill bushing fastener.
Fig. 2 is the sectional view of drill bushing fastener.
Detailed description of the invention
Embodiment 1
As illustrated in fig. 1 and 2, a kind of drill bushing fastener, agent structure is made up of handle 1, axle 2, drift 3, trip bolt 4, handle 1 is a kind of multidiameter structure, handle 1 axle center, small end bottom surface be vertically evenly distributed with 3 blind holes, there is a through hole side of blind hole, and the axle 2 of cylindrical structural is inserted in the blind hole of handle 1, and axle 2 adopts interference fit to be connected with blind hole; On the small end outer circumference surface of handle 1 interference fit connect drift 3, drift 3 is tubular structure, the inner peripheral end of drift 3 is inclined-plane, and with the drift crossing formation а of 3 outer circumference surface angle, а angle is 30
o; On the outer surface of drift 3, have a screwed hole, be provided with blind hole on axle 2 surfaces, the ailhead of trip bolt 4 passes the through hole of handle 1 by screwed hole, is inserted in the blind hole of axle 2; When use, after drift 3 weares and teares, can sharpening and replacing, by axle 2, drill bushing fastener is carried out to centralized positioning, use with the inclined-plane of drift 3 ends and get depression on the model of drill bushing surrounding, because the cone angle structure of drift 3 plays certain clamping action to drill bushing, can effectively prevent that drill bushing is loosening and come off.
Embodiment 2
As illustrated in fig. 1 and 2, a kind of drill bushing fastener, agent structure is made up of handle 1, axle 2, drift 3, trip bolt 4, handle 1 is a kind of multidiameter structure, handle 1 axle center, small end bottom surface be vertically evenly distributed with 10 blind holes, there is a through hole side of blind hole, and the axle 2 of cylindrical structural is inserted in the blind hole of handle 1, and axle 2 adopts interference fit to be connected with blind hole; On the small end outer circumference surface of handle 1 interference fit connect drift 3, drift 3 is tubular structure, the inner peripheral end of drift 3 is inclined-plane, and with the drift crossing formation а of 3 outer circumference surface angle, а angle is 45
o; On the outer surface of drift 3, have a screwed hole, be provided with blind hole on axle 2 surfaces, the ailhead of trip bolt 4 passes the through hole of handle 1 by screwed hole, be inserted in the blind hole of axle 2.
Embodiment 3
As illustrated in fig. 1 and 2, drift 3 is tubular structure, and the inner peripheral end of drift 3 is inclined-plane, and with the drift crossing formation а of 3 outer circumference surface angle, а angle is 60
o, other structures are identical with embodiment 2.
Claims (2)
1. a drill bushing fastener, it is characterized in that: formed by handle (1), axle (2), drift (3), trip bolt (4), handle (1) is a kind of multidiameter structure, the axle center, small end bottom surface of handle (1) is provided with blind hole, there is a through hole side of blind hole, the axle (2) of cylindrical structural is inserted in the blind hole of handle (1), and axle (2) adopts interference fit to be connected with blind hole; On the small end outer circumference surface of handle (1) interference fit connect drift (3), drift (3) is tubular structure, the inner peripheral end of drift (3) is inclined-plane, and with the crossing formation а of drift (3) outer circumference surface angle, а angle is 30
o-60
o; On the outer surface of drift (3), have a screwed hole, be provided with blind hole on axle (2) surface, the ailhead of trip bolt (4) passes the through hole of handle (1) by screwed hole, be inserted in the blind hole of axle (2).
2. drill bushing fastener as claimed in claim 1, is characterized in that: on described axle (2) outer circumference surface, be vertically evenly distributed with 3-10 blind hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320797200.5U CN203696931U (en) | 2013-12-09 | 2013-12-09 | Fastening device of drill bushing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320797200.5U CN203696931U (en) | 2013-12-09 | 2013-12-09 | Fastening device of drill bushing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203696931U true CN203696931U (en) | 2014-07-09 |
Family
ID=51047429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320797200.5U Expired - Fee Related CN203696931U (en) | 2013-12-09 | 2013-12-09 | Fastening device of drill bushing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203696931U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109079038A (en) * | 2018-09-04 | 2018-12-25 | 沈阳飞机工业（集团）有限公司 | A kind of template drill bushing punching pin |
| CN109605286A (en) * | 2019-01-16 | 2019-04-12 | 沈阳飞机工业（集团）有限公司 | One kind is anti-to pound hand punching pin |
-
2013
- 2013-12-09 CN CN201320797200.5U patent/CN203696931U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109079038A (en) * | 2018-09-04 | 2018-12-25 | 沈阳飞机工业（集团）有限公司 | A kind of template drill bushing punching pin |
| CN109605286A (en) * | 2019-01-16 | 2019-04-12 | 沈阳飞机工业（集团）有限公司 | One kind is anti-to pound hand punching pin |
| CN109605286B (en) * | 2019-01-16 | 2024-01-23 | 沈阳飞机工业（集团）有限公司 | Anti-smash hand punch |
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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: 20140709 Termination date: 20161209 |