CN205532300U - Expanding bit - Google Patents
Expanding bit Download PDFInfo
- Publication number
- CN205532300U CN205532300U CN201620382302.4U CN201620382302U CN205532300U CN 205532300 U CN205532300 U CN 205532300U CN 201620382302 U CN201620382302 U CN 201620382302U CN 205532300 U CN205532300 U CN 205532300U
- Authority
- CN
- China
- Prior art keywords
- drill body
- movable blades
- drill bit
- movable blade
- cavity
- 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
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- Drilling Tools (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
The utility model discloses an expanding bit: it includes drill bit body, drillstock, tool bit and movable blade, the upper end of drill bit body is connected with the drillstock, and the lower extreme and the tool bit of drill bit body are connected, this internal cavity that is equipped with of drill bit, be equipped with the annular protruding wall with drill bit body coaxial line on the interior diapire of cavity, annular protruding wall on be equipped with along a plurality of blade grooves that its circumferencial direction distributes, and movable blade articulates at the blade inslot, be equipped with the draw -in groove that stretches out a plurality of confession movable blade lower parts on the lower extreme circumference wall of drill bit body, and movable blade's lower extreme setting is in the outside of drill bit body, movable blade's upper end sets up the inboard at the protruding wall of annular, the cavity upper portion of drill bit body is equipped with the adjustment mechanism who adjusts movable blade turned angle. This expanding bit simple structure, low in production cost, it is workable.
Description
Technical field
This utility model relates to boring bar tool technical field, specifically be a kind of reaming bit.
Background technology
Road, railway, bridge, Steel Structure Installation fix and the installation of the high capacity such as heavy duty equipment, fixing in need to use
Post-anchoring technology.Its installation process is as follows: first beaten straight hole on concrete substrate, then with special reaming bit at straight hole
Bottom carries out reaming, and the geometry after the die cavity of reaming and crab-bolt head expand is consistent, rear reaming crab-bolt head expand afterwards and
Concrete die cavity closely cooperates formation mechanical locking mechanism.Reaming bit typically uses gear, the kind of drive of tooth bar realizes boring
The expansion of cephalic par blade and contraction, the reamer bit structure of this form is complicated, cost is high, thus increases use cost.
Utility model content
The technical problems to be solved in the utility model is, overcomes the defect of above prior art, it is provided that a kind of simple in construction, produces
Low cost, the easily reaming bit of processing.
Technical solution of the present utility model is to provide a kind of reaming bit with following structure: it include drill body,
Drillstock, cutter head and movable blades, the upper end of described drill body connects drillstock, and the lower end of drill body is connected with cutter head, institute
Being provided with a cavity in the drill body stated, the interior diapire of described cavity is provided with and the convex annular wall of drill body coaxial line, described
Convex annular wall be provided with the multiple insert grooves being distributed along its circumferencial direction, and movable blades is hinged in insert groove, described drill bit
The lower circumferential wall of body is provided with multiple draw-in groove stretched out for movable blades bottom, and the lower end of movable blades is arranged on drill bit originally
The outside of body, the upper end of movable blades is arranged on the inner side of convex annular wall；The cavity top of described drill body is provided with regulation activity
The governor motion of blade rotation angle.
After using above structure, this utility model reaming bit compared with prior art, has the advantage that this reaming bit exists
During boring, drill body and movable blades and cutter head drill straight hole, when getting into the degree of depth of setting, governor motion makes movable blades
Upper end moves down, so that the lower end of movable blades is turned out, now the lower end of movable blades is stretched out the outside of drill body and carried out
Reaming, after reaming terminates, governor motion makes to move on the upper end of movable blades, can be taken out by drill body；This reamer bit structure
Simply, production cost is low, and easily processes.
As preferably, the cavity top of described drill body is provided with the governor motion of regulation movable blades rotational angle.Refer to described
The upper end screw-casing of convex annular wall is connected to the joint of a hollow, and in the endoporus of described joint, spiral connects a push rod, and under push rod
End is resisted against the upper surface of the movable blades inside convex annular wall.When regulating movable blades rotational angle, rotate push rod and make push rod
Moving down, the upper end of push rod pressure movable blades, so that the lower end of movable blades is flared out carrying out ream operation；Work as expansion
Hole is complete, rotates push rod and makes to move on push rod, and the lower end of push rod departs from the upper end of movable blades, when taking out drill body, movable
The lower end of blade is to contract.
As preferably, the two side of described insert groove is provided with two rotary axis grooves, and described movable blades is provided with two circular protrusions,
Two described circular protrusions matched in clearance are in two rotary axis grooves.
As preferably, the outer circumference wall of described drill body is provided with a plurality of spiral type chip area.
Accompanying drawing explanation
Fig. 1 is the Facad structure schematic diagram of this utility model reaming bit.
Fig. 2 is the sectional structure schematic diagram of this utility model reaming bit.
Fig. 3 is the view in transverse section of this utility model reaming bit.
As shown in the figure:
1, drill body, 2, cutter head, 3, movable blades, 4, draw-in groove, 5, chip area, 6, convex annular wall, 7, insert groove,
8, joint, 9, endoporus, 10, push rod, 11, cavity, 12, circular protrusions, 13, rotary axis groove.
Detailed description of the invention
With specific embodiment, this utility model is described in further detail below in conjunction with the accompanying drawings.
As shown in Figure 1, Figure 2 and Figure 3;
This utility model reaming bit, it includes drill body 1, drillstock, cutter head 2 and movable blades 3, described drill body 1
Upper end connect have drillstock, the lower end of drill body 1 to be connected with cutter head 2, be provided with a cavity 11 in described drill body 1,
The interior diapire of described cavity 11 is provided with and the convex annular wall 6 of drill body 1 coaxial line, and described convex annular wall 6 is provided with edge
Multiple insert grooves 7 of its circumferencial direction distribution, and movable blades 3 is hinged in insert groove 7, the lower end of described drill body 1
Circumferential wall is provided with multiple draw-in groove 4 stretched out for movable blades 3 bottom, and the lower end of movable blades 3 is arranged on drill body 1
Outside, the upper end of movable blades 3 is arranged on the inner side of convex annular wall 6；Cavity 11 top of described drill body 1 is provided with tune
The governor motion of joint movable blades 3 rotational angle.
This reaming bit boring time, drill body 1 and movable blades 3 and cutter head 2 drill straight hole, when getting into the degree of depth of setting,
Governor motion makes the upper end of movable blades 3 move down, so that the lower end of movable blades 3 is turned out, and now movable blades 3
Lower end is stretched out the outside of drill body 1 and is carried out ream operation.
The upper end screw-casing of described convex annular wall 6 is connected to the joint 8 of a hollow, and in the endoporus 9 of described joint 8, spiral connects one
Push rod 10, and the lower end of push rod 10 is resisted against the upper surface of the movable blades 3 inside convex annular wall 6.
When regulating movable blades 3 rotational angle, rotating push rod 10 and make push rod 10 move down, movable blades 3 depressed by push rod 10
Upper end, so that the lower end of movable blades 3 is flared out carrying out ream operation；When reaming is complete, rotate push rod 10 and make top
Moving on bar 10, the lower end of push rod 10 departs from the upper end of movable blades 3, when taking out drill body 1, and movable blades 3 times
End is to contract.
The two side of described insert groove 7 is provided with two rotary axis grooves 13, and described movable blades 3 is provided with two circular protrusions 12,
Two described circular protrusions 12 matched in clearance are in two rotary axis grooves 13.
The outer circumference wall of described drill body 1 is provided with a plurality of spiral type chip area 5.
Claims (4)
1. a reaming bit, it includes drill body (1), drillstock, cutter head (2) and movable blades (3), described drill bit
The upper end of body (1) connects has drillstock, the lower end of drill body (1) to be connected with cutter head (2), it is characterised in that: described
Being provided with a cavity (11) in drill body (1), the interior diapire of described cavity (11) is provided with and drill body (1) coaxial line
Convex annular wall (6), described convex annular wall (6) is provided with the multiple insert grooves (7) being distributed along its circumferencial direction, and movable
Blade (3) is hinged in insert groove (7), and the lower circumferential wall of described drill body (1) is provided with multiple for movable blades (3)
The draw-in groove (4) that bottom is stretched out, and the lower end of movable blades (3) is arranged on the outside of drill body (1), movable blades (3)
Upper end be arranged on the inner side of convex annular wall (6)；Cavity (11) top of described drill body (1) is provided with regulation movable blade
The governor motion of sheet (3) rotational angle.
Reaming bit the most according to claim 1, it is characterised in that: the upper end spiral socket of described convex annular wall (6)
Having the joint (8) of a hollow, in the endoporus (9) of described joint (8), spiral connects a push rod (10), and push rod (10)
Lower end is resisted against the upper surface of the movable blades (3) of convex annular wall (6) inner side.
Reaming bit the most according to claim 1, it is characterised in that: the two side of described insert groove (7) is provided with two
Individual rotary axis groove (13), described movable blades (3) is provided with two circular protrusions (12), two described circular protrusions (12)
Matched in clearance is in two rotary axis grooves (13).
Reaming bit the most according to claim 1, it is characterised in that: on the outer circumference wall of described drill body (1)
It is provided with a plurality of spiral type chip area (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620382302.4U CN205532300U (en) | 2016-04-29 | 2016-04-29 | Expanding bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620382302.4U CN205532300U (en) | 2016-04-29 | 2016-04-29 | Expanding bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205532300U true CN205532300U (en) | 2016-08-31 |
Family
ID=56795406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620382302.4U Expired - Fee Related CN205532300U (en) | 2016-04-29 | 2016-04-29 | Expanding bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205532300U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111305753A (en) * | 2018-12-11 | 2020-06-19 | 高文举 | Geotechnical engineering on-site piling device |
| CN111375806A (en) * | 2019-10-06 | 2020-07-07 | 李吴军 | Forced reaming drill bit |
-
2016
- 2016-04-29 CN CN201620382302.4U patent/CN205532300U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111305753A (en) * | 2018-12-11 | 2020-06-19 | 高文举 | Geotechnical engineering on-site piling device |
| CN111375806A (en) * | 2019-10-06 | 2020-07-07 | 李吴军 | Forced reaming drill bit |
| CN111375806B (en) * | 2019-10-06 | 2021-08-03 | 安徽凯森特矿山机械制造有限公司 | Forced reaming drill bit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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. |
|
| 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: 20160831 Termination date: 20210429 |