CN205629472U - Hollow combined drill - Google Patents
Hollow combined drill Download PDFInfo
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- CN205629472U CN205629472U CN201620388800.XU CN201620388800U CN205629472U CN 205629472 U CN205629472 U CN 205629472U CN 201620388800 U CN201620388800 U CN 201620388800U CN 205629472 U CN205629472 U CN 205629472U
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- drillstock
- drill bit
- drill body
- drill
- contiguous block
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Abstract
The utility model discloses a hollow combined drill: it includes drill bit body, drillstock and tool bit, the lower extreme of drill bit body inwards is equipped with a cavity, tool bit fixed connection at the lower extreme of drill bit body, drillstock and drill bit body detachable connections, the top of drill bit body is equipped with a mounting hole, the mounting hole in a swing joint connecting block, and the upper end of the connecting block top of stretching out the drill bit body, and be equipped with the external screw thread on the upper end circumference wall of connecting block, the lower extreme of drillstock is equipped with the connecting hole, be equipped with the internal thread that closes screwed connection with the outer thread to match of connecting block upper end on the inner wall of connecting hole. This hollow combined drill drillstock and drill bit body firm in connection, and the junction is difficult for wearing and tearing, long service life.
Description
Technical field
This utility model relates to boring bar tool technical field, specifically be a kind of hollow combination drill 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, during use, drillstock is clamped on the chuck of lathe or electric tool.Owing to the cutting face of drill body is relatively big, easily skidding when boring cutting, cause being difficult to location, cutting precision is low, adds a location drill bit at the center of drill body for these people.As disclosed the patent of a kind of entitled hollow boring bit on State Intellectual Property Office website, it includes cutter head, drill body and drillstock, described cutter head is fixed in the front end of drill body, and described drillstock is located at the rear end of drill body, described drill body and the removable connection of drillstock；Being additionally provided with the center bit for location on described drillstock, described center bit is located at the front end of drillstock.For with threaded between the drill body of the hollow boring bit of this structure, drillstock and center bit, the rear end of concrete drill body is provided with screwed hole, drillstock is provided with the external screw thread with corresponding threaded holes, drillstock is connected by this external screw thread and screwed hole, and center bit with drillstock also by threadeding；Owing to drillstock is directly threaded connection with drill body, so during life-time service, the threaded portion that drillstock is connected with drill body is easy to wear, drill body is caused to loosen, affect drilling efficiency, particularly may result in drill body after the threaded portion abrasion of drill body cannot use, cause the wasting of resources.
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 drillstock is connected firmly with drill body, and junction is the most easy to wear, the hollow combination drill bit of length in service life.
Technical solution of the present utility model is, there is provided a kind of hollow combination drill bit with following structure: it includes drill body, drillstock and cutter head, the lower end of described drill body is provided inwardly with a cavity, described cutter head is fixedly connected on the lower end of drill body, described drillstock is removable with drill body to be connected, the top of described drill body is provided with an installing hole, a contiguous block it is flexibly connected in described installing hole, and the upper end of contiguous block stretches out the top of drill body, and the upper end circumferential wall of contiguous block is provided with external screw thread, the lower end of described drillstock is provided with connecting hole, the inwall of described connecting hole is provided with the external screw thread with contiguous block upper end and matches the female thread that spiral is connected.
After using above structure, this utility model hollow combination drill bit is compared with prior art, have the advantage that the top of the drill body of this hollow combination drill bit is provided with an installing hole, a contiguous block it is flexibly connected in installing hole, and the upper end of contiguous block stretches out the top of drill body, the upper end circumferential wall of described contiguous block is provided with external screw thread, and the lower end of described drillstock is connected with contiguous block upper end spiral.This hollow combination drill bit is used and is connected by contiguous block between drill body with drillstock, so can avoid threadeding between drill body with drillstock, and make drillstock be connected firmly with drill body, and junction is the most easy to wear, service life is long；Even if the thread abrasion of contiguous block upper end, only contiguous block need to be changed, it is not necessary to drill body is replaced, thus avoids the wasting of resources.
As preferably, the lower end of described installing hole is provided with a square opening being connected with installing hole, and the lower end of described contiguous block is provided with the square block matched with square opening size, and the lower end of square block is provided with an endoporus, and described endoporus inwall is provided with female thread；Being provided with a location drill bit in the cavity of described drill body, described location bit upper end spiral is connected in the endoporus of square block lower end.The square block of contiguous block lower end is arranged in the square opening of installing hole lower end, and contiguous block thus plays circumferentially rotating position-limiting action.
As improvement, the lower surface of described drillstock is provided with an annular groove, and the drill body of described installing hole upper end is provided with the chimeric annular protrusion that matches with annular groove.After drillstock and contiguous block are installed and are put in place, the annular groove on the lower surface of drillstock and annular protrusion tabling.
As improvement, described drillstock sidewall is provided with the blind hole inserted for rod member, and the axis of described blind hole is vertical with the axis of drillstock.This blind hole is available for rod member and inserts, and when drillstock is connected with contiguous block spiral, the pluggable rod member of this blind hole, rotation rod member makes drillstock be connected with contiguous block to put in place.
The outer circumference wall of described drill body is provided with a plurality of spiral helicine chip area.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model hollow combination drill bit.
Fig. 2 is the upward view of this utility model hollow combination drill bit.
Fig. 3 is the sectional structure schematic diagram of this utility model hollow combination drill bit.
Fig. 4 is that the sectional structure of this utility model hollow combination drill bit assembles schematic diagram.
As shown in the figure:
1, drillstock, 2, drill body, 3, location drill bit, 4, cavity, 5, cutter head, 6, chip area, 7, blind hole, 8, contiguous block, 9, connecting hole, 10, square block, 11, installing hole, 12, square opening, 13, endoporus, 14, annular groove, 15, annular protrusion.
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, Figure 3 and Figure 4；
This utility model hollow combination drill bit, it includes drill body 2, drillstock 1 and cutter head 5, the lower end of described drill body 2 is provided inwardly with a cavity 4, described cutter head 5 is fixedly connected on the lower end of drill body 2, described drillstock 1 is removable with drill body 2 to be connected, the top of described drill body 2 is provided with an installing hole 11, it is flexibly connected a contiguous block 8 in described installing hole 11, and the upper end of contiguous block 8 stretches out the top of drill body 2, the upper end circumferential wall of described contiguous block 8 is provided with external screw thread, the lower end of described drillstock 1 is provided with connecting hole 9, the inwall of described connecting hole 9 is provided with the external screw thread with contiguous block 8 upper end and matches the female thread that spiral is connected.
The lower end of described installing hole 11 is provided with a square opening 12 being connected with installing hole 11, and the lower end of described contiguous block 8 is provided with the square block 10 matched with square opening 12 size, and the lower end of square block 10 is provided with an endoporus 13, and described endoporus 13 inwall is provided with female thread；Being provided with a location drill bit 3 in the cavity 4 of described drill body 2, described drill bit 3 upper end, location spiral is connected in the endoporus 13 of square block 10 lower end.
The lower surface of described drillstock 1 is provided with an annular groove 14, and the drill body 2 of described installing hole 11 upper end is provided with the annular protrusion 15 matching chimeric with annular groove 14.
Described drillstock 1 sidewall is provided with the blind hole 7 inserted for rod member, and the axis of described blind hole 7 is vertical with the axis of drillstock 1.
The outer circumference wall of described drill body 2 is provided with a plurality of spiral helicine chip area 6.
Claims (5)
1. a hollow combination drill bit, it includes drill body (2), drillstock (1) and cutter head (5), the lower end of described drill body (2) is provided inwardly with a cavity (4), described cutter head (5) is fixedly connected on the lower end of drill body (2), described drillstock (1) is removable with drill body (2) to be connected, it is characterized in that: the top of described drill body (2) is provided with an installing hole (11), a contiguous block (8) it is flexibly connected in described installing hole (11), and the upper end of contiguous block (8) stretches out the top of drill body (2), the upper end circumferential wall of described contiguous block (8) is provided with external screw thread, the lower end of described drillstock (1) is provided with connecting hole (9), the inwall of described connecting hole (9) is provided with the external screw thread with contiguous block (8) upper end and matches the female thread that spiral is connected.
Hollow combination drill bit the most according to claim 1, it is characterized in that: the lower end of described installing hole (11) is provided with a square opening (12) being connected with installing hole (11), the lower end of described contiguous block (8) is provided with the square block (10) matched with square opening (12) size, and the lower end of square block (10) is provided with an endoporus (13), described endoporus (13) inwall is provided with female thread；Being provided with a location drill bit (3) in the cavity (4) of described drill body (2), described location drill bit (3) upper end spiral is connected in the endoporus (13) of square block (10) lower end.
Hollow combination drill bit the most according to claim 1, it is characterized in that: the lower surface of described drillstock (1) is provided with an annular groove (14), the drill body (2) of described installing hole (11) upper end is provided with the annular protrusion (15) matching chimeric with annular groove (14).
Hollow combination drill bit the most according to claim 1, it is characterized in that: described drillstock (1) sidewall is provided with the blind hole (7) inserted for rod member, and the axis of described blind hole (7) is vertical with the axis of drillstock (1).
Hollow combination drill bit the most according to claim 1, it is characterised in that: the outer circumference wall of described drill body (2) is provided with a plurality of spiral helicine chip area (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620388800.XU CN205629472U (en) | 2016-04-29 | 2016-04-29 | Hollow combined drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620388800.XU CN205629472U (en) | 2016-04-29 | 2016-04-29 | Hollow combined drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205629472U true CN205629472U (en) | 2016-10-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620388800.XU Active CN205629472U (en) | 2016-04-29 | 2016-04-29 | Hollow combined drill |
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| Country | Link |
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| CN (1) | CN205629472U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108746100A (en) * | 2018-06-22 | 2018-11-06 | 四川金易管业有限公司 | One kind is except gluing mechanism in pipeline |
| CN110227835A (en) * | 2019-04-15 | 2019-09-13 | 黄晓明 | Pipeline tapping bores, pipeline tapping device and its application method |
-
2016
- 2016-04-29 CN CN201620388800.XU patent/CN205629472U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108746100A (en) * | 2018-06-22 | 2018-11-06 | 四川金易管业有限公司 | One kind is except gluing mechanism in pipeline |
| CN108746100B (en) * | 2018-06-22 | 2023-09-15 | 四川金易管业有限公司 | Pipeline inner glue removing mechanism |
| CN110227835A (en) * | 2019-04-15 | 2019-09-13 | 黄晓明 | Pipeline tapping bores, pipeline tapping device and its application method |
| CN110227835B (en) * | 2019-04-15 | 2021-08-20 | 黄晓明 | Pipeline opening device and using method thereof |
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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. |