CN203236022U - Combined drill bit for drilling and broaching - Google Patents
Combined drill bit for drilling and broaching Download PDFInfo
- Publication number
- CN203236022U CN203236022U CN 201320043109 CN201320043109U CN203236022U CN 203236022 U CN203236022 U CN 203236022U CN 201320043109 CN201320043109 CN 201320043109 CN 201320043109 U CN201320043109 U CN 201320043109U CN 203236022 U CN203236022 U CN 203236022U
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- CN
- China
- Prior art keywords
- drilling
- reaming
- screw mandrel
- cylindrical shell
- broaching
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Abstract
The utility model discloses a combined drill bit for drilling and broaching. The combined drill bit for drilling and broaching comprises a drilling cutterhead, a barrel body, a lead screw, a connecting head and at least two broaching blades located between the drilling cutterhead and the barrel body, the at least two drilling blades are arranged at the front end of the drilling cutterhead in a surrounding mode, a drill rod is connected with the drilling cutterhead, the connecting head is connected with the barrel body and the drill rod, the lead screw penetrates through the barrel body, the drilling cutterhead and the connecting head, the lead screw is fixedly connected with the drilling cutterhead, the lead screw is in thread connection with the barrel body, the two ends of each broaching blade are hinged to the front end of the lead screw and the front portion of the barrel body through a first hinged-connection device and a second hinged-connection device respectively, and the lead screw ascends or descends in a rotating mode in the barrel body. The combined drill bit for drilling and broaching is simple in structure, capable of completing the drilling and the broaching at the same time or completing the drilling and the broaching independently, and low in cost, enables parts to be repaired and replaced conveniently and is long in service life.
Description
Technical field
The utility model relates to the device of boring and reaming, particularly relates to boring reaming combined drill.
Background technology
Present existing boring and Counterboring apparatus generally all separate, and put into Counterboring apparatus behind the brill mouthful rear taking-up drill again and carry out reaming.Cumbersome like this, and cost compare is high.And the high boring reaming combined drill of price comparison arranged on the market, and itself or boring and reaming blade all fix, and the reaming blade can not draw in, or is exactly that the reaming blade struts or draws in by hydraulic cylinder.The shortcoming of such drill bit is that cost is high, complex structure, and maintenance is difficult, and service life is short.
Summary of the invention
The utility model is finished in order to solve deficiency of the prior art, the purpose of this utility model provide can simple in structure, can finish simultaneously boring and reaming, also can select to hole separately or reaming, cost is low, maintenance and change that parts are convenient, the boring reaming combined drill of long service life.
Boring reaming combined drill of the present utility model, comprise tool disc for drilling, cylindrical shell, screw mandrel, connector and at least two reaming blades between described tool disc for drilling and described cylindrical shell, described tool disc for drilling front end ring is provided with at least two drill plates, described drilling rod is connected with described tool disc for drilling, described connector is connected with drilling rod with cylindrical shell and is connected, described screw mandrel passes described cylindrical shell, tool disc for drilling and described connector, described screw mandrel is fixedly connected with described tool disc for drilling, described screw mandrel is connected with described cylinder screw, the two ends of described reaming blade and the front end of described screw mandrel and cylindrical shell front portion are hinged by the first articulated mounting and the second articulated mounting respectively, and described screw mandrel rotates in described cylindrical shell and rises or descend.
Boring reaming combined drill of the present utility model can also be:
Described the first articulated mounting is the cornish bit mount pad, and described reaming blade front end is articulated in described cornish bit mount pad rear portion.
Described the second articulated mounting is connecting rod, and an end of described connecting rod and the rear end of described reaming blade are hinged, and the other end of described connecting rod and cylindrical shell front portion are hinged.
Be fixed with hold-down nut in the described cylindrical shell, described screw mandrel passes the central authorities of described nut, and described screw mandrel outer wall is threaded with described nut inner wall.
Boring reaming combined drill of the present utility model, owing to comprising tool disc for drilling, cylindrical shell, screw mandrel, connector and at least two reaming blades between described tool disc for drilling and described cylindrical shell, described tool disc for drilling front end ring is provided with at least two drill plates, described drilling rod is connected with described tool disc for drilling, described connector is connected with drilling rod with cylindrical shell and is connected, described screw mandrel passes described cylindrical shell, tool disc for drilling and described connector, described screw mandrel is fixedly connected with described tool disc for drilling, described screw mandrel is connected with described cylinder screw, the two ends of described reaming blade and the front end of described screw mandrel and cylindrical shell front portion are hinged by the first articulated mounting and the second articulated mounting respectively, and described screw mandrel rotates in described cylindrical shell and rises or descend.Like this, when drilling rod drives the tool disc for drilling rotation, drive simultaneously the rotation of cylindrical shell and connector, when rotating, tool disc for drilling drives fixing with it screw mandrel rotation, screw mandrel rotation since its with cylindrical shell between be threaded, so that screw mandrel rises with respect to the cylindrical shell rotation, the respectively operation owing to Distance Shortened between screw mandrel front end and the cylindrical shell of this moment the first articulated mounting and the second articulated mounting, be but that the reaming blade opens the reaming state that is in so that the rear end of reaming blade expands outwardly, with the blade of the reaming blade of stack shell rotation the hole inwall being carried out reaming processes, when not needing reaming, the drilling rod reverse rotation drives with it fixing silk reverse rotation, after the screw mandrel reverse rotation since its with cylindrical shell between be threaded, so that screw mandrel with respect to cylindrical shell rotation descend namely away from, this moment, the first articulated mounting and the second articulated mounting were because distance elongation and respectively operation between screw mandrel front end and the cylindrical shell, be that the reaming blade opens and is in rounding state so that inwardly shrink the rear end of reaming blade, regain with the blade of the reaming blade of stack shell rotation and no longer carry out reaming and process.Advantage with respect to prior art is just to use the articulated form of simple machinery to open or retraction reaming blade like this, avoid using the complex component such as hydraulic cylinder, easy to maintenance, simple in structure, cost is low, and can select to use separately drilling function or boring and hole expansion function to carry out simultaneously.
Another purpose of the present utility model be use said structure simple, can finish simultaneously boring and reaming, also can select to hole separately or reaming, cost is low, maintenance and change that parts are convenient, the boring reaming combined drill of long service life is holed and the method for reaming.
Description of drawings
Fig. 1 the utility model boring reaming combined drill embodiment schematic diagram.
Fig. 2 the utility model boring reaming combined drill reaming blade open configuration schematic diagram.
Fig. 3 the utility model boring reaming combined drill reaming blade open configuration partly cuts open figure.
Fig. 4 the utility model boring reaming combined drill reaming blade rounding state partly cuts open figure.
The figure number explanation
1 ... tool disc for drilling 2 ... cylindrical shell 3 ... drill plate
4 ... screw mandrel 5 ... connector 6 ... the reaming blade
7 ... cornish bit mount pad 8 ... connecting rod 9 ... nut
The specific embodiment
Fig. 1 to Fig. 4 below in conjunction with accompanying drawing is described in further detail boring reaming combined drill of the present utility model.
Boring reaming combined drill of the present utility model, please refer to Fig. 1 to Fig. 4, comprise tool disc for drilling 1, cylindrical shell 2, screw mandrel 4, connector 5 and at least two reaming blades 6 between described tool disc for drilling 1 and described cylindrical shell 2, described tool disc for drilling 1 front end ring is provided with at least two drill plates 3, described drilling rod is connected with described tool disc for drilling 1, described connector 5 and cylindrical shell 2 are connected with drilling rod and are connected, described screw mandrel 4 passes described cylindrical shell 2, tool disc for drilling 1 and described connector 5, described screw mandrel 4 is fixedly connected with described tool disc for drilling 1, described screw mandrel 4 is threaded with described cylindrical shell 2, the two ends of described reaming blade 6 and the front end of described screw mandrel and cylindrical shell 2 front portions are hinged by the first articulated mounting and the second articulated mounting respectively, and described screw mandrel 4 rises or descends in described cylindrical shell 2 interior rotations.Like this, when drilling rod drives tool disc for drilling 1 rotation, drive simultaneously cylindrical shell 2 and connector 5 rotations, when tool disc for drilling 1 rotation, drive 4 rotations of fixing with it screw mandrel, screw mandrel 4 rotation since its with cylindrical shell 2 between be threaded, so that screw mandrel 4 rises with respect to cylindrical shell 2 rotations, the respectively operation owing to Distance Shortened between screw mandrel 4 front ends and the cylindrical shell 2 of this moment the first articulated mounting and the second articulated mounting, be but that reaming blade 6 opens the reaming state that is in so that the rear end of reaming blade 6 expands outwardly, with the blade of the reaming blade 6 of cylindrical shell 2 rotation the hole inwall being carried out reaming processes, when not needing reaming, the drilling rod reverse rotation drives with it fixing silk reverse rotation, after screw mandrel 4 reverse rotation since its with cylindrical shell 2 between be threaded, so that screw mandrel 4 with respect to cylindrical shell 2 rotation descend namely away from, this moment, the first articulated mounting and the second articulated mounting were because distance elongation and respectively operation between screw mandrel 4 front ends and the cylindrical shell 2, be that reaming blade 6 opens and is in rounding state so that inwardly shrink the rear end of reaming blade 6, regain with the blade of the reaming blade 6 of cylindrical shell 2 rotations and no longer carry out reaming and process.Advantage with respect to prior art is just to use the articulated form of simple machinery to open or retraction reaming blade 6 like this, avoid using the complex component such as hydraulic cylinder, easy to maintenance, simple in structure, cost is low, and can select to use separately drilling function or boring and hole expansion function to carry out simultaneously.When in addition, described rising or descending motion are respectively boring reaming combined drill horizontal positioned left and move right.
Boring reaming combined drill of the present utility model please refer to Fig. 1 to Fig. 4, specifically can be that described the first articulated mounting is cornish bit mount pad 7 in front on the basis of technical scheme, and described reaming blade 6 front ends are articulated in described cornish bit mount pad 7 rear portions.Like this, in screw mandrel 4 moving process, cornish bit mount pad 7 guarantees that the rear end of reaming blade 6 can be along the front end articulated position rotation of reaming blade 6.Further preferred technical scheme is that described the second articulated mounting is connecting rod 8, and an end of described connecting rod 8 and the rear end of described reaming blade 6 are hinged, and the other end of described connecting rod 8 and cylindrical shell 2 are anterior hinged.Like this, because the hinged effect of both-end of connecting rod 8 being arranged, so that the rear end of reaming blade 6 can rotate take its front end articulated position as axis, guarantee that namely it finishes expansion and gathering function.Further preferred technical scheme is to be fixed with hold-down nut 9 in the described cylindrical shell 2, and described screw mandrel 4 passes the central authorities of described nut 9, and described screw mandrel 4 outer walls are connected with described nut 9 inner threads.Like this in the process of screw mandrel 4 rotations, because nut 9 is fixed in the cylindrical shell 2, screw mandrel 4 can rise or descend with cylindrical shell 2 relatively, and namely the distance between screw mandrel 4 front ends and the cylindrical shell 2 is shortening or extends, and then expansion and the gathering of realization reaming blade 6.
Utilization of the present utility model is holed, and the reaming combined drill is holed and the method for reaming, please refer to Fig. 1 to Fig. 4, comprises the steps:
A. rotary drill rod, drilling rod drive cylindrical shell 2 and connector 5 and tool disc for drilling 1 rotation, and drill plate 3 rotary cuttings on the described tool disc for drilling 1 begin boring;
B. in tool disc for drilling 1 rotation, drive screw mandrel 4 rotations, screw mandrel 4 rises overally, the rear end that screw mandrel 4 rotarily drives the first articulated mounting and the second articulated mounting drive reaming blade 6 expands outwardly, so that the edge of a knife of reaming blade 6 carries out reaming to the hole of having bored;
C. after reaming finishes, the reverse rotation drilling rod, drilling rod drives cylindrical shell 2 and connector 5 and tool disc for drilling 1 rotation, in tool disc for drilling 1 reverse rotation, drive screw mandrel 4 reverse rotations, screw mandrel 4 whole declines, screw mandrel 4 reverse rotations drive the rear end of the first articulated mounting and the second articulated mounting drive reaming blade 6 and inwardly shrink, so that reaming blade 6 collapses to original position.
Adopt above-mentioned boring reaming combined drill simultaneously shot borehole and reaming, cost is low, the high and long service life of efficient.
Utilization of the present utility model is holed, and the reaming combined drill is holed and the method for reaming, please refer to Fig. 1 to Fig. 4, can also be that described the first articulated mounting is cornish bit mount pad 7, described reaming blade 6 front ends are articulated in described cornish bit mount pad 7 rear portions, described the second articulated mounting is connecting rod 8, one end of described connecting rod 8 and the rear end of described reaming blade 6 are hinged, the other end of described connecting rod 8 and cylindrical shell 2 are anterior hinged, reaming blade 6 front ends are around the jointed shaft rotation of cornish bit mount pad 7 in described B step and the C step, the rear end rotation of described connecting rod 8, the front end of described connecting rod 8 drives and the rear end of the reaming blade 6 that its front end is hinged expands outwardly or inward collapsible.
Certainly can also be to be fixed with hold-down nut 9 in the described cylindrical shell 2, described screw mandrel 4 passes the central authorities of described nut 9, described screw mandrel 4 outer walls are connected with described nut 9 inner threads, in described A step and the C step, described screw mandrel 4 rotations, nut 9 is fixed on the cylindrical shell 2 motionless, and then so that screw mandrel 4 relatively rising or declines of relative cylindrical shells 2.
Above-mentionedly only several specific embodiments in the utility model are illustrated; but can not be as protection domain of the present utility model; every equivalence variation of having done according to the design spirit in the utility model or modification or equal proportion zoom in or out etc., all should think to fall into protection domain of the present utility model.
Claims (4)
1. boring reaming combined drill, it is characterized in that: comprise tool disc for drilling, cylindrical shell, screw mandrel, connector and at least two reaming blades between described tool disc for drilling and described cylindrical shell, described tool disc for drilling front end ring is provided with at least two drill plates, drilling rod is connected with described tool disc for drilling, described connector is connected with drilling rod with cylindrical shell and is connected, described screw mandrel passes described cylindrical shell, tool disc for drilling and described connector, described screw mandrel is fixedly connected with described tool disc for drilling, described screw mandrel is connected with described cylinder screw, the two ends of described reaming blade and the front end of described screw mandrel and cylindrical shell front portion are hinged by the first articulated mounting and the second articulated mounting respectively, and described screw mandrel rotates in described cylindrical shell and rises or descend.
2. boring reaming combined drill according to claim 1, it is characterized in that: described the first articulated mounting is the cornish bit mount pad, described reaming blade front end is articulated in described cornish bit mount pad rear portion.
3. boring reaming combined drill according to claim 2, it is characterized in that: described the second articulated mounting is connecting rod, and an end of described connecting rod and the rear end of described reaming blade are hinged, and the other end of described connecting rod and cylindrical shell front portion are hinged.
4. according to claim 1 and 2 or 3 described boring reaming combined drills, it is characterized in that: be fixed with hold-down nut in the described cylindrical shell, described screw mandrel passes the central authorities of described nut, and described screw mandrel outer wall is threaded with described nut inner wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320043109 CN203236022U (en) | 2013-01-24 | 2013-01-24 | Combined drill bit for drilling and broaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320043109 CN203236022U (en) | 2013-01-24 | 2013-01-24 | Combined drill bit for drilling and broaching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203236022U true CN203236022U (en) | 2013-10-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320043109 Expired - Fee Related CN203236022U (en) | 2013-01-24 | 2013-01-24 | Combined drill bit for drilling and broaching |
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| Country | Link |
|---|---|
| CN (1) | CN203236022U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103056426A (en) * | 2013-01-24 | 2013-04-24 | 朱凡 | Drilling and reaming combined drill bit and method for drilling and reaming through same |
-
2013
- 2013-01-24 CN CN 201320043109 patent/CN203236022U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103056426A (en) * | 2013-01-24 | 2013-04-24 | 朱凡 | Drilling and reaming combined drill bit and method for drilling and reaming through same |
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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: 20131016 Termination date: 20150124 |
|
| EXPY | Termination of patent right or utility model |