CN205532299U - Hollow drill bit - Google Patents
Hollow drill bit Download PDFInfo
- Publication number
- CN205532299U CN205532299U CN201620382698.2U CN201620382698U CN205532299U CN 205532299 U CN205532299 U CN 205532299U CN 201620382698 U CN201620382698 U CN 201620382698U CN 205532299 U CN205532299 U CN 205532299U
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- CN
- China
- Prior art keywords
- hole
- push rod
- drill body
- drill bit
- drill
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- 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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- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
The utility model discloses a hollow drill bit: it includes drill bit body, drillstock and tool bit, the drill bit this internally be equipped with a cavity, and the one end of drill bit body is the blind end, the other end of drill bit body be with the communicating unlimited end of cavity, the blind end and the drillstock of drill bit body are connected, tool bit evenly distributed serve at the unlimited of drill bit body, be equipped with a plurality of through -holes that distribute along drill bit body circumference on the blind end of drill bit body, and the axis of through -hole is parallel with the axis of drill bit body, a cyclic annular roof is established to the movable sleeve on the drillstock in the drill bit body outside, connect a plurality of ejector pins on the lower terminal surface of cyclic annular roof, ejector pin clearance fit in the through -hole of drill bit body blind end, and the length of ejector pin is greater than the degree of depth of through -hole. Rock core after this hollow drill bit can will cut conveniently takes out.
Description
Technical field
This utility model relates to boring bar tool technical field, specifically be a kind of hollow boring bit.
Background technology
Hollow boring bit is also known as coring bit, hole making drill, and it is widely used in the boring of the materials such as rock, concrete and granite.
The core drill of prior art include hollow drill body, drillstock and and drill body fix the cutter head of connection, drillstock during use
It is clamped on the chuck of lathe or electric tool.Owing to the cutting face of drill body is relatively big, easily skid when boring cutting, lead
Cause is difficult to location, and cutting precision is low, adds a location drill bit at the center of drill body for these people.Such as State Intellectual property right
Disclosing the patent of a kind of entitled hollow boring bit on board web, it includes that cutter head, drill body and drillstock, described cutter head are fixed in
The front end of drill body, described drillstock is located at the rear end of drill body, described drill body and the removable connection of drillstock；Institute
Being additionally provided with the center bit for location on the drillstock stated, described center bit is located at the front end of drillstock.The core drill of this structure
Head after boring, needs use instrument will to cut the rock got off in drill body inner chamber on the materials such as rock, concrete and granite
Stone, concrete or granite core take out, to facilitate hollow boring bit to use next time, during coring, due to core surface with
Frictional force between drill body inner chamber, makes core be difficult to take off, it is necessary to could be taken out by the core after cutting by instrument, therefore grasp
It is the most inconvenient to make.
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 can by cutting after rock
The convenient hollow boring bit taken out of Shi Xin.
Technical solution of the present utility model is to provide a kind of hollow boring bit with following structure: it include drill body,
Drillstock and cutter head, be provided with a cavity in described drill body, and one end of drill body is blind end, another of drill body
End is the open end communicated with cavity, and the blind end of described drill body is connected with drillstock, and described cutter head is evenly distributed on drill bit
On the open end of body, the blind end of described drill body is provided with multiple through hole circumferentially distributed along drill body, and through hole
Axis is parallel with the axis of drill body；Be slidingly connected on drillstock outside described drill body an annular deck, described ring-type top
Connecting multiple push rod on the lower surface of plate, described push rod matched in clearance is in the through hole of drill body blind end, and the length of push rod
Degree is more than the degree of depth of through hole.
After using above structure, this utility model hollow boring bit compared with prior art, has the advantage that this hollow boring bit exists
On rock, concrete or granite during boring, stay the rock core of drill body cavity after cutting, annular deck can be depressed, by
Rock core is ejected by the push rod of annular deck, and rock core so can be facilitated to take out, and is not required to, again by other instruments, operate the most square
Just.
As preferably, described through hole includes the stepped hole of coaxial line, pilot hole and spacing hole, described step the most successively
The aperture size in hole is more than the aperture size of pilot hole, and the aperture size of spacing hole is more than the aperture size of pilot hole；Described
Push rod includes the first push rod, the second push rod and limiting stand the most successively, and the outside dimension of the first described push rod is more than second
The outside dimension of push rod, the outside dimension of limiting stand is more than the outside dimension of the second push rod, described limiting stand and the second push rod
The removable connection in lower end；Described the first push rod, the second push rod and limiting stand matched in clearance respectively is in the stepped hole of through hole, guiding
In hole and spacing hole.The shape of this through hole and the design of push rod shape, make push rod energy axial limiting in through hole, prevent push rod from taking off
Fall.
As improvement, the lower circumferential of described first push rod connects an elastomeric pad.This elastomeric pad bears down on one under push rod and rock
The lower end of the first push rod and the direct rigid contact of diapire of stepped hole can be prevented and collision cleft during stone core.
As improvement, the outer circle wall of described drill body is provided with spiral type chip area.This spiral type chip area can be easy to rock
Powder is discharged smoothly.
As improvement, the cavity inner bottom part of described drill body is provided with a location drill bit, and positions drill bit and drill body and drillstock
Coaxial line, the outer end of described location drill bit is arranged on outside the open end of drill body.This location drill bit plays positioning action, makes
It is difficult to skid during boring cutting.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model hollow boring bit.
Fig. 2 is the Facad structure schematic diagram of this utility model hollow boring bit.
Fig. 3 is the sectional structure schematic diagram of this utility model hollow boring bit.
As shown in the figure:
1, drill body, 2, drillstock, 3, cutter head, 4, cavity, 5, location drill bit, 6, spiral type chip area, 7, ring-type
Top board, 8, push rod, 9, through hole, 10, stepped hole, 11, pilot hole, 12, spacing hole, the 13, first push rod, 14,
Two push rods, 15, limiting stand, 16, elastomeric pad.
Detailed description of the invention
With specific embodiment, this utility model is described in further detail below in conjunction with the accompanying drawings.
Show with Fig. 3 as shown in Figure 1, Figure 2；
This utility model hollow boring bit, it includes drill body 1, drillstock 2 and cutter head 3, is provided with one in described drill body 1
Cavity 4, and one end of drill body 1 is blind end, the other end of drill body 1 is the open end communicated with cavity 4, institute
The blind end stating drill body 1 is connected with drillstock 2, and described cutter head 3 is evenly distributed on the open end of drill body 1, institute
State the blind end of drill body 1 and be provided with multiple through hole 9 circumferentially distributed along drill body 1, and the axis of through hole 9 and drill bit
The axis of body 1 is parallel；Be slidingly connected on drillstock 2 outside described drill body 1 annular deck 7, described annular deck 7
Lower surface on connect multiple push rod 8, described push rod 8 matched in clearance in the through hole 9 of drill body 1 blind end, and top
The length of bar 8 is more than the degree of depth of through hole 9.
Described through hole 9 includes the stepped hole 10 of coaxial line, pilot hole 11 and spacing hole 12, the aperture chi of described stepped hole 10
The very little aperture size more than pilot hole 11, and the aperture size of spacing hole 12 is more than the aperture size of pilot hole 11；Described top
Bar 8 includes the first push rod the 13, second push rod 14 and limiting stand 15, and the outside dimension of the first described push rod 13 is more than the second top
The outside dimension of bar 14, the outside dimension of limiting stand 15 more than the outside dimension of the second push rod 14, described limiting stand 15 with
The removable connection in lower end of the second push rod 14；First described push rod the 13, second push rod 14 and limiting stand 15 gap respectively are joined
It is combined in the stepped hole 10 of through hole 9, pilot hole 11 and spacing hole 12.
An elastomeric pad 16 is connected on the lower circumferential of described first push rod 13.
The outer circle wall of described drill body 1 is provided with spiral type chip area 6.
Cavity 4 inner bottom part of described drill body 1 is provided with a location drill bit 5, and positions drill bit 5 and drill body 1 and drillstock 2
Coaxial line, the outer end of described location drill bit 5 is arranged on outside the open end of drill body 1.
Claims (5)
1. a hollow boring bit, it includes drill body (1), drillstock (2) and cutter head (3), described drill body (1)
Inside being provided with a cavity (4), and one end of drill body (1) is blind end, the other end of drill body (1) is and cavity (4)
The open end communicated, the blind end of described drill body (1) is connected with drillstock (2), and described cutter head (3) is evenly distributed on
On the open end of drill body (1), it is characterised in that: the blind end of described drill body (1) is provided with multiple along drill bit basis
The through hole (9) that body (1) is circumferentially distributed, and the axis of through hole (9) is parallel with the axis of drill body (1)；Described drill bit is originally
Be slidingly connected on the drillstock (2) in body (1) outside an annular deck (7), the lower surface of described annular deck (7) connects many
Individual push rod (8), described push rod (8) matched in clearance is in the through hole (9) of drill body (1) blind end, and push rod (8)
Length more than the degree of depth of through hole (9).
Hollow boring bit the most according to claim 1, it is characterised in that: described through hole (9) includes the step of coaxial line
Hole (10), pilot hole (11) and spacing hole (12), the aperture size of described stepped hole (10) is more than pilot hole (11)
Aperture size, and the aperture size of spacing hole (12) is more than the aperture size of pilot hole (11)；Described push rod (8) includes
First push rod (13), the second push rod (14) and limiting stand (15), the outside dimension of described the first push rod (13) is more than the
The outside dimension of two push rods (14), the outside dimension of limiting stand (15) is more than the outside dimension of the second push rod (14), described
Limiting stand (15) removable with the lower end of the second push rod (14) be connected；Described the first push rod (13), the second push rod (14)
Distinguish in matched in clearance stepped hole (10), pilot hole (11) and spacing hole (12) in through hole (9) with limiting stand (15).
Hollow boring bit the most according to claim 2, it is characterised in that: connect on the lower circumferential of described first push rod (13)
Connect an elastomeric pad (16).
Hollow boring bit the most according to claim 1, it is characterised in that: set on the outer circle wall of described drill body (1)
There is spiral type chip area (6).
Hollow boring bit the most according to claim 1, it is characterised in that: cavity (4) inner bottom of described drill body (1)
Portion is provided with a location drill bit (5), and positions drill bit (5) and drill body (1) and drillstock (2) coaxial line, described spitting drill
The outer end of head (5) is arranged on outside the open end of drill body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620382698.2U CN205532299U (en) | 2016-04-29 | 2016-04-29 | Hollow drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620382698.2U CN205532299U (en) | 2016-04-29 | 2016-04-29 | Hollow drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205532299U true CN205532299U (en) | 2016-08-31 |
Family
ID=56794080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620382698.2U Expired - Fee Related CN205532299U (en) | 2016-04-29 | 2016-04-29 | Hollow drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205532299U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115609038A (en) * | 2022-12-15 | 2023-01-17 | 河北安丰重工机械股份有限公司 | Automatic round steel blank drilling machine of location |
-
2016
- 2016-04-29 CN CN201620382698.2U patent/CN205532299U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115609038A (en) * | 2022-12-15 | 2023-01-17 | 河北安丰重工机械股份有限公司 | Automatic round steel blank drilling machine of location |
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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: 20160831 Termination date: 20200429 |