CN206374042U - Adjustable openings device drill bit - Google Patents
Adjustable openings device drill bit Download PDFInfo
- Publication number
- CN206374042U CN206374042U CN201720062924.3U CN201720062924U CN206374042U CN 206374042 U CN206374042 U CN 206374042U CN 201720062924 U CN201720062924 U CN 201720062924U CN 206374042 U CN206374042 U CN 206374042U
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- Prior art keywords
- drilling rod
- drill bit
- activity
- drill
- adjustable openings
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Abstract
The utility model discloses a kind of adjustable openings device drill bit：It includes drilling rod and cutter head, the lower end of the drilling rod is provided with convex annular wall, and described cutter head is arranged in convex annular wall, and the center of the drilling rod is provided with a cavity, and two elongated holes along drilling rod Longitudinal extending are arranged with the side wall of drilling rod, described elongated hole is connected with the cavity at drilling rod center；Two symmetrically arranged activity drills are hinged in two described elongated holes, and the upper end of activity drill is arranged in cavity；Described cavity inside spin connects an adjusting rod, the lower sides of the adjusting rod are provided with a ring-type stopper slot, the upper gap of the activity drill coordinates in ring-type stopper slot, and the top end face of the adjusting rod is provided with an inner polygon hole inserted for screwdriver.The adjustable openings device drill bit can adjust the bore diameter size of drill bit, and easy to operate.
Description
Technical field
The utility model is related to boring bar tool technical field, specifically be a kind of adjustable openings device drill bit.
Background technology
Hole making drill is mainly used in carrying out sheet material, stone material or concrete plate the rig of perforate.Typically repaiied in road
In shield or the build process of power tower, it is typically necessary and is drilled using hole making drill on the ground of concrete, in order to which road is set
Apply or power tower fixed installation, the structure of its used drill bit generally comprises drilling rod and is connected to the annular of drilling rod lower end
Cutter head, the aperture that the drilling bit of tapper is bored is fixed, if to bore the hole of larger diameter, it is necessary to change the brill of larger diameter
Head just can be because the cost of drilling bit of tapper is higher, and when workman constructs, to generally require to be equipped with multiple differences as needed
The drill bit of diameter, which not only adds construction cost, and is not easy to the keeping of drill bit.
Utility model content
The technical problems to be solved in the utility model is to overcome the defect of above prior art there is provided a kind of adjusting drilling
The bore diameter size of head, and easy to operate adjustable openings device drill bit.
Technical solution of the present utility model is to provide a kind of adjustable openings device drill bit with following structure：It
Including drilling rod and cutter head, the lower end of the drilling rod is provided with convex annular wall, and described cutter head is arranged in convex annular wall, the drilling rod
Center provided with two elongated holes along drilling rod Longitudinal extending are arranged with a cavity, and the side wall of drilling rod, described is elongated
Hole is connected with the cavity at drilling rod center；Two symmetrically arranged activity drills, and activity are hinged in two described elongated holes
The upper end of drill is arranged in cavity；Described cavity inside spin is connected to be set on an adjusting rod, the lower sides of the adjusting rod
There is a ring-type stopper slot, the upper gap of the activity drill coordinates in ring-type stopper slot, the top end face of the adjusting rod
Provided with an inner polygon hole inserted for screwdriver.
After above structure, the utility model adjustable openings device drill bit compared with prior art, with advantages below：
The adjusting rod of the adjustable openings device drill bit rotates to drive two flared angles in activity drill lower end, and adjusting rod
Top end face can adjust two running drills provided with an inner polygon hole inserted for screwdriver by screwdriver rotation
The angle that knife opens, so that the bore diameter size of adjustable drill bit, operation is very easy.
As an improvement, the end face of the drilling rod lower end is provided with an annular secondary cutter head.Described annular secondary cutter head is further
The boring capacity of adjustable openings device drill bit is added, makes the efficiency high of drilling.
Preferably, the upper end of the activity drill is provided inwardly with a projection, described raised gap coordinates in ring-type limit
In the groove of position.
Locked as an improvement, the lateral wall on the drilling rod top is provided with spiral connection one on threaded portion, described threaded portion
Tight screw, described lock screw is used for downward locking activity drill.The lock screw activity drill expansion certain angle after,
The lateral wall of activity drill is locked, activity drill is not produced and rocks.
Preferably, the middle part of the activity drill and two madial walls of elongated hole are hinged by hinge pin.
Brief description of the drawings
Fig. 1 is the positive structure schematic of the utility model adjustable openings device drill bit.
Fig. 2 is the present invention looks up structural representation of the utility model adjustable openings device drill bit.
Fig. 3 is the structural representation of the utility model adjustable openings device drill bit.
Fig. 4 is the cross section structure diagram of the utility model adjustable openings device drill bit.
As shown in the figure：
1st, drilling rod, 2, cutter head, 3, cavity, 4, elongated hole, 5, activity drill, 6, raised, 7, adjusting rod, 8, ring-type it is spacing
Groove, 9, inner polygon hole, 10, lock screw, 11, annular secondary cutter head, 12, convex annular wall.
Embodiment
The utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
As shown in Figure 1, Figure 2, Figure 3 and Figure 4；
The utility model adjustable openings device drill bit, it includes drilling rod 1 and cutter head 2, and the lower end of the drilling rod 1 is provided with annular
Convex wall 12, described cutter head 2 is arranged in convex annular wall 12, and the center of the drilling rod 1 is provided with a cavity 3, and the side wall of drilling rod 1
On be arranged with two elongated holes 4 along the Longitudinal extending of drilling rod 1, described elongated hole 4 is connected with the cavity 3 at the center of drilling rod 1；
Two symmetrically arranged activity drills 5 are hinged in two described elongated holes 4, and the upper end of activity drill 5 is arranged on cavity 3
It is interior；The described inside spin of cavity 3 connects an adjusting rod 7, and the lower sides of the adjusting rod 7 are provided with a ring-type stopper slot 8, institute
The upper gap for stating activity drill 5 coordinates in ring-type stopper slot 8, and the top end face of the adjusting rod 7 supplies screw provided with one
The inner polygon hole 9 of knife insertion.The adjusting rod of the adjustable openings device drill bit rotates to drive two activity drill lower ends outside
The angle of expansion, and the top end face of adjusting rod supplies the inner polygon hole that screwdriver is inserted provided with one, therefore screw can be passed through
Swivel moves to adjust the angle that two activity drills are opened.
The end face of the lower end of drilling rod 1 is provided with an annular secondary cutter head 11.Described annular secondary cutter head is further increased
The boring capacity of adjustable openings device drill bit, makes the efficiency high of drilling.
The upper end of the activity drill 5 is provided inwardly with a projection 6, and described raised 6 gap coordinates in ring-type stopper slot 8
It is interior.
The lateral wall on the top of drilling rod 1 is provided with spiral on threaded portion, described threaded portion and connects a lock screw 10,
Described lock screw 10 is used for downward locking activity drill 5.The lock screw is after activity drill expansion certain angle, by work
The lateral wall locking of dynamic drill, makes activity drill not produce and rocks.
The middle part of the activity drill 5 is hinged with two madial walls of elongated hole 4 by hinge pin.
Claims (5)
1. a kind of adjustable openings device drill bit, it includes drilling rod (1) and cutter head (2), and the lower end of the drilling rod (1) is provided with convex annular
Wall (12), described cutter head (2) is arranged in convex annular wall (12), it is characterised in that：The center of the drilling rod (1) is provided with
Two elongated holes (4) along drilling rod (1) Longitudinal extending, described elongated hole are arranged with chamber (3), and the side wall of drilling rod (1)
(4) cavity (3) with drilling rod (1) center is connected；Two symmetrically arranged running drills are hinged in two described elongated holes (4)
Knife (5), and the upper end of activity drill (5) is arranged in cavity (3)；Described cavity (3) inside spin connects an adjusting rod (7),
The lower sides of the adjusting rod (7) are provided with a ring-type stopper slot (8), and the upper gap of the activity drill (5) coordinates
In ring-type stopper slot (8), the top end face of the adjusting rod (7) is provided with an inner polygon hole (9) inserted for screwdriver.
2. adjustable openings device drill bit according to claim 1, it is characterised in that：On the end face of drilling rod (1) lower end
Provided with an annular secondary cutter head (11).
3. adjustable openings device drill bit according to claim 1, it is characterised in that：The upper end of the activity drill (5) to
One raised (6) are inside provided with, described projection (6) gap coordinates in ring-type stopper slot (8).
4. adjustable openings device drill bit according to claim 1, it is characterised in that：The lateral wall on drilling rod (1) top
It is provided with spiral on threaded portion, described threaded portion and connects a lock screw (10), described lock screw (10) is used for downward
Locking activity drill (5).
5. adjustable openings device drill bit according to claim 1, it is characterised in that：The middle part of the activity drill (5) with
Two madial walls of elongated hole (4) are hinged by hinge pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720062924.3U CN206374042U (en) | 2017-01-19 | 2017-01-19 | Adjustable openings device drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720062924.3U CN206374042U (en) | 2017-01-19 | 2017-01-19 | Adjustable openings device drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206374042U true CN206374042U (en) | 2017-08-04 |
Family
ID=59400153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720062924.3U Active CN206374042U (en) | 2017-01-19 | 2017-01-19 | Adjustable openings device drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206374042U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI650218B (en) * | 2017-08-10 | 2019-02-11 | 余信奕 | Axle device and boring tool |
| CN110271899A (en) * | 2019-03-29 | 2019-09-24 | 国网浙江东阳市供电有限公司 | A kind of transformer equipment normalization state Marking machine |
-
2017
- 2017-01-19 CN CN201720062924.3U patent/CN206374042U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI650218B (en) * | 2017-08-10 | 2019-02-11 | 余信奕 | Axle device and boring tool |
| CN110271899A (en) * | 2019-03-29 | 2019-09-24 | 国网浙江东阳市供电有限公司 | A kind of transformer equipment normalization state Marking machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 315166 Houlong Village, Longguan Township, Haishu District, Ningbo City, Zhejiang Province Patentee after: Ningbo Shendian Tools Co., Ltd. Address before: 315166 Houlong Village, Longguan Township, Yinzhou District, Ningbo City, Zhejiang Province Patentee before: Ningbo Maike Pante Electric Tool Co., Ltd. |