CN209021293U - A kind of fluted drill attachment device - Google Patents
A kind of fluted drill attachment device Download PDFInfo
- Publication number
- CN209021293U CN209021293U CN201821912649.0U CN201821912649U CN209021293U CN 209021293 U CN209021293 U CN 209021293U CN 201821912649 U CN201821912649 U CN 201821912649U CN 209021293 U CN209021293 U CN 209021293U
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- China
- Prior art keywords
- drill
- pin hole
- hole
- pin
- drill bushing
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Abstract
The utility model discloses a kind of fluted drill attachment devices, it include: fluted drill, at least one drill bushing for being connect with the fluted drill, one end of the drill bushing offers pin hole, the other end has been integrally machined connecting pin, the center line of the pin hole, the center line of connecting pin and fluted drill is on the same line, threaded hole is offered on the side wall of the drill bushing of the one end for offering pin hole, the threaded hole and pin hole penetrate through, the clamping end of fluted drill is protruded into the pin hole, and the clamping end is fastened in pin hole by bolt screw-in in the threaded hole.Through the above way, the utility model connects fluted drill using drill bushing, can ensure that the central axis of drill bushing and fluted drill on the same line, while also ensuring that coupling stiffness, avoid occurring phenomenon of rupture in boring procedure, to improve borehole accuracy, processing efficiency and reduce processing cost.
Description
Technical field
The utility model relates to mechanical cold working apparatus technical fields, more particularly to a kind of fluted drill attachment device.
Background technique
There are many be located at compared with the spiral shell on deep-small hole step surface on the parts such as rocker arm of coal mining machine, towing tank, walking tank shell
Pit, some screw thread hole sites also proximate cavity lateral, need to drill using king-size fluted drill.
When existing use fluted drill processes these threaded holes, it generally is welded to connect bar in fluted drill clamping end, due to welding
Process inevitably makes the central axis of connecting rod and fluted drill not on the same line, i.e. connecting rod and fluted drill decentraction,
Become larger so that there is aperture when drilling and do not meet drawing requirement；Also it will appear connecting rod and fluted drill weld in boring procedure
Phenomenon of rupture, once fracture needs to re-start welding.Therefore existing that fluted drill is lengthened using welding manner, not only influence drilling
Quality, while also influencing processing efficiency and processing cost.
Utility model content
The utility model is mainly solving the technical problems that provide a kind of fluted drill attachment device, using drill bushing connection fried dough twist
It bores, can ensure that the central axis of drill bushing and fluted drill on the same line, while also ensuring that coupling stiffness, avoid in boring procedure
There is phenomenon of rupture, to improve borehole accuracy, processing efficiency and reduce processing cost.
In order to solve the above technical problems, the technical solution that the utility model uses is: providing a kind of fluted drill connection
Device, comprising: fluted drill, at least one drill bushing connecting with the fluted drill, one end of the drill bushing offers pin hole, another
End has been integrally machined connecting pin, and the center line of the pin hole, the center line of connecting pin and fluted drill on the same line, is opening up
Threaded hole is offered on the side wall for having the drill bushing of one end of pin hole, the threaded hole and pin hole penetrate through, and the clamping end of fluted drill is stretched
Enter in the pin hole, the clamping end is fastened in pin hole by bolt screw-in in the threaded hole.
In one preferred embodiment of the utility model, the drill bushing include the first drill bushing, connect with the first drill bushing
Two drill bushings.
In one preferred embodiment of the utility model, one end of first drill bushing offers the first pin hole, the other end
It has been integrally machined the first connecting pin, has offered the first screw thread on the side wall for the first drill bushing for offering one end of the first pin hole
Hole, first threaded hole and the first pin hole penetrate through；One end of second drill bushing offers the second pin hole, and the other end integrally adds
Work has the second connecting pin, and the second threaded hole is offered on the side wall for the second drill bushing for offering one end of the second pin hole, described
Second threaded hole and the second pin hole penetrate through；First connecting pin protrudes into second pin hole, and bolt is screwed in the second spiral shell
First connecting pin is fastened in the second pin hole in pit.
In one preferred embodiment of the utility model, first pin hole is and the mutually matched side in fluted drill clamping end
Shape hole.
In one preferred embodiment of the utility model, the internal diameter of the outer diameter of first connecting pin and second pin hole
It is equal.
In one preferred embodiment of the utility model, first threaded hole, the second threaded hole have 4, difference two
On two side walls symmetrical above and below for being provided with the first drill bushing, the second drill bushing.
The beneficial effects of the utility model are: the utility model is connect using at least one drill bushing with fluted drill, in drill bushing
One end open up pin hole, the other end is machined with connecting pin, by pin hole connect fluted drill, another brill is reconnected by connecting pin
Set, and adopts and is bolted connection, so as to effectively lengthen fluted drill, and the center line of pin hole, connecting pin and fluted drill
Center line on the same line, can guarantee to lengthen the concentricity of the fluted drill and drill bushing after connecting, it is ensured that borehole accuracy also can
Ensure coupling stiffness, avoid occurring phenomenon of rupture in use process, to improve processing efficiency, reduce processing cost.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of one preferred embodiment of fluted drill attachment device of the utility model；
The components in the drawings are labeled as follows: 1, fluted drill, 2, drill bushing, the 21, first drill bushing, the 211, first pin hole, 212,
First connecting pin, the 213, first threaded hole, the 22, second drill bushing, the 221, second pin hole, the 222, second connecting pin, the 223, second spiral shell
Pit.
Specific embodiment
The preferred embodiment of the utility model is described in detail with reference to the accompanying drawing, so that the advantages of the utility model
It can be easier to be readily appreciated by one skilled in the art with feature, to make the protection scope of the utility model apparent clear
Define.
Referring to Fig. 1, the utility model embodiment includes:
A kind of fluted drill attachment device, comprising: fluted drill 1, at least one drill bushing 2 being connect with the fluted drill 1, it is described
One end of drill bushing 2 offers pin hole, and the other end has been integrally machined connecting pin, the center line and fluted drill of the pin hole, connecting pin
Center line on the same line, to can ensure that the concentricity after fluted drill is connect with drill bushing 2, it is ensured that borehole accuracy, in order to
Guarantee the connection rigidity between fluted drill 1 and drill bushing 2, offers screw thread on the side wall of the drill bushing 2 of the one end for offering pin hole
Hole, the threaded hole and pin hole penetrate through, and when connection, the clamping end of fluted drill 1 is protruded into the pin hole, is then revolved using bolt
Enter and the clamping end is fastened in pin hole in the threaded hole, so that fluted drill 1 and drill bushing 2 be made to be securely attached at one
It rises.
In the present embodiment, the drill bushing 2 includes the first drill bushing 21, the second drill bushing 22 connecting with the first drill bushing 21.
Wherein, one end of first drill bushing 21 offers the first pin hole 211, and the other end has been integrally machined the first connecting pin
212, offer the first threaded hole 213 on the side wall for the first drill bushing 21 for offering one end of the first pin hole 211, described first
Threaded hole 213 and the first pin hole 211 penetrate through；One end of second drill bushing 22 offers the second pin hole 221, and the other end integrally adds
Work has the second connecting pin 222, offers the second screw thread on the side wall for the second drill bushing 22 for offering one end of the second pin hole 221
Hole 223, second threaded hole 223 and the second pin hole 221 penetrate through；First connecting pin 212 is protruded into second pin hole
In 221, first connecting pin 212 is fastened in the second pin hole 221 by bolt screw-in in the second threaded hole 223, makes first
Drill bushing 21 is reliably connected together with the second drill bushing 2.
Further, in this embodiment first pin hole 211 be with the mutually matched square hole in fluted drill clamping end,
Convenient for reliably being connect with fluted drill 1.
The outer diameter of first connecting pin 212 is equal with the internal diameter of second pin hole 221, it is ensured that the first drill bushing 21 and
Connection reliability between two drill bushings 22.
Further, first threaded hole 213, the second threaded hole 223 have 4, symmetrical above and below two-by-two respectively to open
It is located on the side wall of the first drill bushing 21, the second drill bushing 22, is locked respectively fluted drill 1 and the first drill bushing using multiple bolts
Junction, the first drill bushing 21 between 21 and the junction between the second drill bushing 22, it is ensured that connection rigidity avoids in use process
There is phenomenon of rupture.
The utility model is abandoned in the past by the way of being welded to connect bar and lengthening fluted drill, connects fluted drill using drill bushing,
Installation, convenient disassembly, connection concentricity, rigidity are reliable, can be improved borehole accuracy, improve processing efficiency and reduce and are processed into
This.
In the description of the present invention, it should be noted that term " on ", "lower", "left", "right", "inner", "outside" etc.
The orientation or positional relationship of instruction be based on the orientation or positional relationship shown in the drawings or the utility model product use when
The orientation or positional relationship usually put, is merely for convenience of describing the present invention and simplifying the description, rather than instruction or dark
Show that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as pair
The limitation of the utility model.The above descriptions are merely preferred embodiments of the present invention, and it is practical new to be not limited to this
Type, for those skilled in the art, the present invention may have various modifications and changes.All essences in the utility model
Mind and principle within, any modification, equivalent replacement, improvement and so on, should be included in the protection scope of the utility model it
It is interior.
The above description is only the embodiments of the present invention, and therefore it does not limit the scope of the patent of the utility model, all
Equivalent structure or equivalent flow shift made based on the specification and figures of the utility model, is applied directly or indirectly in
Other related technical areas are also included in the patent protection scope of the utility model.
Claims (6)
1. a kind of fluted drill attachment device characterized by comprising fluted drill, at least one connecting with the fluted drill are bored
Set, one end of the drill bushing offer pin hole, and the other end has been integrally machined connecting pin, the pin hole, connecting pin center line with
The center line of fluted drill on the same line, offers threaded hole on the side wall of the drill bushing of the one end for offering pin hole, described
Threaded hole and pin hole penetrate through, and the clamping end of fluted drill is protruded into the pin hole, and bolt screws in the threaded hole will be described
Clamping end is fastened in pin hole.
2. fluted drill attachment device according to claim 1, which is characterized in that the drill bushing includes the first drill bushing, with the
Second drill bushing of one drill bushing connection.
3. fluted drill attachment device according to claim 2, which is characterized in that one end of first drill bushing offers
One pin hole, the other end have been integrally machined the first connecting pin, open on the side wall for the first drill bushing for offering one end of the first pin hole
Equipped with the first threaded hole, first threaded hole and the first pin hole are penetrated through；One end of second drill bushing offers the second pin hole,
The other end has been integrally machined the second connecting pin, offers second on the side wall for the second drill bushing for offering one end of the second pin hole
Threaded hole, second threaded hole and the second pin hole penetrate through；First connecting pin protrudes into second pin hole, bolt rotation
Enter and first connecting pin is fastened in the second pin hole in the second threaded hole.
4. fluted drill attachment device according to claim 3, which is characterized in that first pin hole is to clamp with fluted drill
Hold mutually matched square hole.
5. fluted drill attachment device according to claim 3, which is characterized in that the outer diameter of first connecting pin with it is described
The internal diameter of second pin hole is equal.
6. fluted drill attachment device according to claim 3, which is characterized in that first threaded hole, the second threaded hole
There are 4, respectively two-by-two on the side wall symmetrical above and below for being provided with the first drill bushing, the second drill bushing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821912649.0U CN209021293U (en) | 2018-11-20 | 2018-11-20 | A kind of fluted drill attachment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821912649.0U CN209021293U (en) | 2018-11-20 | 2018-11-20 | A kind of fluted drill attachment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209021293U true CN209021293U (en) | 2019-06-25 |
Family
ID=66909769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821912649.0U Active CN209021293U (en) | 2018-11-20 | 2018-11-20 | A kind of fluted drill attachment device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209021293U (en) |
-
2018
- 2018-11-20 CN CN201821912649.0U patent/CN209021293U/en active Active
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| GR01 | Patent grant |