CN105195787A - Soft shaft electric drill - Google Patents
Soft shaft electric drill Download PDFInfo
- Publication number
- CN105195787A CN105195787A CN201510713286.2A CN201510713286A CN105195787A CN 105195787 A CN105195787 A CN 105195787A CN 201510713286 A CN201510713286 A CN 201510713286A CN 105195787 A CN105195787 A CN 105195787A
- Authority
- CN
- China
- Prior art keywords
- drill bit
- axle
- axle sleeve
- electric drill
- ball bearings
- 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.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B45/00—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor
- B23B45/003—Attachments
- B23B45/005—Flexible shafts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B45/00—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor
- B23B45/02—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor driven by electric power
Abstract
The invention discloses a soft shaft electric drill, comprising a motor, a drill bit and a soft shaft for connecting the motor and the drill bit, wherein the soft shaft comprises a shaft sleeve and a shaft core arranged inside the shaft sleeve in a sheathing way, the shaft core is a thread shaped shaft core formed by twisting a metal wire along an axis, and a plurality of ball bearings are fixedly arranged in the shaft sleeve along an axial direction; the shaft core penetrates through the centers of the ball bearings in sequence and is connected with the motor and the drill bit, and the shaft core and the centers of the plurality of ball bearings are in interference fitting. The soft shaft electric drill has the advantages that the design adopts a structure that the ball bearings are used in the shaft sleeve to bear the shaft core, friction force generated when the shaft core rotates is greatly lowered, so that the soft shaft electric drill also can be normally used when is matched with a longer soft shaft, and can be used for coping with dredging operation under a deeper and longer area environment; the soft shaft electric drill is simple in structure, convenient to use and maintain, and very high in practicability.
Description
Technical field
The present invention relates to electric drill field of mechanical technique, be specifically related to a kind of electric drill with flexible spindle.
Background technology
Electric drill with flexible spindle is a kind of electric drill with soft axostylus axostyle, and its course of work mainly by driven by motor rotating soft axle, and then drives bit; Due to the form that the flexible one-tenth of soft axostylus axostyle is different, adjustable drill bit, in different angles work, is therefore generally used for the boring under the nonlinear type regions such as sewer, crooked pipeline, loose soil layer or narrow zone environment and dredging operation.The flexible axle length of existing electric drill with flexible spindle is general shorter, cover and limit because the power output of electric drill is less and flexible axle intensity is lower: when flexible axle is long, its speed of rotation sharply reduces because of the increase of frictional force, drill bit cannot be run well, if improve the speed of rotation of flexible axle by improving power output, then flexible axle is difficult to bear powerful frictional shearing for a long time, very easily causes flexible axle cracked.Therefore, the existence of above-mentioned defect, limits electric drill with flexible spindle in the use more deeply, in longer regional environment.
Summary of the invention
The present invention is directed to above-mentioned flexible axle shorter and limit electric drill with flexible spindle use technical problem, propose a kind of new electric drill with flexible spindle, this electric drill has longer flexible axle, can normally use under general power output, greatly facilitates the use in darker or longer regional environment.
The present invention solves the problems of the technologies described above by the following technical solutions: a kind of electric drill with flexible spindle, the flexible axle comprising motor, drill bit and both are connected, described flexible axle comprises axle sleeve and is sleeved on the axle core of described axle sleeve inside, described axle core is the shape of threads axle core of wire along axle center twisting, and described axle sleeve inside is radially fixedly installed some ball bearings; Described axle core is successively through the center of described some ball bearings, and be connected with described motor and drill bit respectively, described axle core is connected with the center interference of described some ball bearings; When axle core rotates under driven by motor, under the effect of above-mentioned some ball bearings, the frictional force of axle core and shaft room reduces greatly, thus effectively improves the speed of rotation of drill bit.
Optimize, described axle core is connected by swivel nut with between described drill bit, and described swivel nut bottom is fixedly connected with described axle core, and described swivel nut top and described drill bit removably connect.
For above-mentioned prioritization scheme, the structure optimized is: described swivel nut top is provided with internal thread hole, described swivel nut top is connected with described drill bit by a hard axle, described hard axle lower end is provided with the external screw thread corresponding with described internal thread hole, and described hard axle top is provided with the axis hole be connected together with described drill bit.Combined by said structure, conveniently can realize the dismounting of drill bit, replacing and maintenance.
Optimize, the external diameter of described some ball bearings is slightly larger than the internal diameter of described axle sleeve, and the outer wall of described some ball bearings is entrenched on the inwall of described axle sleeve.When the conflict of described ball bearing outer ring is fixed on sleeve lining, rocking of ball bearing can be reduced, more stable when axle core is rotated.
Also has the scheme that another is optimized, namely the external diameter of described some ball bearings is slightly less than the internal diameter of described axle sleeve, on the outer wall of described axle sleeve, the position of corresponding described ball bearing is provided with fastening snap ring, and the outer wall of described some ball bearings is entrenched on the inwall of described axle sleeve.The program, except can making axle core and stablizing, also facilitates the installation processing of ball bearing in flexible axle.
Optimize, described axle sleeve is the soft axle sleeve that polyvinyl chloride is made, and is provided with enhancing structure sheaf in described axle sleeve layer wall.
For the scheme of above-mentioned optimization, described enhancing structure sheaf is specially woven wire, and this structural design had both maintained the soft characteristic of axle sleeve, also enhanced the structural strength of flexible axle.
Optimize, this electric drill with flexible spindle is also equipped with drill bit protective cap, and described drill bit protective cap is test tube shaped component, and in described drill sleeve is loaded on by described drill bit protective cap, the port of described drill bit protective cap and the port of described axle sleeve removably connect.
In the technical scheme of above-mentioned optimization; its optimize structure for: the port outer wall of described axle sleeve near described drill bit one end is provided with external screw thread; described drill bit protective cap port inner wall is provided with the internal thread of corresponding specification, is threaded connection between described axle sleeve and described drill bit protective cap.The effect of drill bit protective cap is, when electric drill is in storage configuration, drill bit can be protected, the unsafe condition that when preventing bit damage or be not intended to start, bit causes.
In all technical schemes as above, described axle core is preferably the shape of threads axle core of stainless steel wire twisting.
The invention has the advantages that: the present invention's design have employed the structure using ball bearing reach core in axle sleeve, greatly reduce frictional force when axle core rotates, also normally can use when making electric drill with flexible spindle be equipped with longer flexible axle, can tackle more deeply, dredging operation under longer regional environment; This apparatus structure is simple, use and maintenance convenient, has very strong practicality.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention;
Fig. 2 is the fixed structure schematic diagram of ball bearing in the embodiment of the present invention one;
Fig. 3 is the cross-sectional view of the embodiment of the present invention one bottom bracket axle;
Fig. 4 is the fixed structure schematic diagram of ball bearing in the embodiment of the present invention two.
Detailed description of the invention
Embodiment one:
As shown in Figure 1, a kind of electric drill with flexible spindle, the flexible axle comprising motor 1, drill bit 2 and both are connected, described flexible axle comprises axle sleeve 3 and is sleeved on the axle core 4 of described axle sleeve 3 inside, described axle core 4 is the shape of threads axle core of stainless steel wire along axle center twisting, and described axle sleeve 3 inside is radially fixedly installed some ball bearings 5; Described axle core 4 is successively through the center of described some ball bearings 5, and be connected with described motor 1 and drill bit 2 respectively, described axle core 4 is connected with the center interference of described some ball bearings 5; When axle core 4 rotates under motor 1 drives, under the effect of above-mentioned some ball bearings 5, the frictional force between axle core 4 and axle sleeve 3 reduces greatly, thus effectively improves the speed of rotation of drill bit.
Be connected by swivel nut 6 between described axle core 4 with described drill bit 2, described swivel nut 6 bottom is fixedly connected with described axle core 4, described swivel nut 6 top is provided with internal thread hole 61, described swivel nut 6 top is connected with described drill bit 2 by a hard axle 7, described hard axle 7 lower end is provided with the external screw thread corresponding with described internal thread hole 61, and described hard axle 7 top is provided with the axis hole 71 be connected together with described drill bit 2.Combined by said structure, conveniently can realize the dismounting of drill bit 2, replacing and maintenance.
As shown in Figure 2, the external diameter of described some ball bearings 5 is slightly larger than the internal diameter of described axle sleeve 3, and the outer wall of described some ball bearings 5 is entrenched on the inwall of described axle sleeve 3.When the conflict of described ball bearing 5 outer ring is fixed on axle sleeve 3 inwall, rocking of ball bearing 5 can be reduced, more stable when axle core 4 is rotated.
As shown in Figure 3, the soft axle sleeve that described axle sleeve 3 is made for polyvinyl chloride, be provided with oven wire mesh blanket 8 in described axle sleeve layer wall, this structural design had both maintained the soft characteristic of axle sleeve, also enhanced the structural strength of flexible axle.
In addition; this electric drill with flexible spindle is also equipped with drill bit protective cap 9; described drill bit protective cap 9 is test tube shaped component; in described drill bit 2, described hard axle 7 and described swivel nut 6 are set in by described drill bit protective cap 9; described drill bit protective cap 9 port inner wall is provided with internal thread; the port outer wall of described axle sleeve 3 near described drill bit 2 one end is provided with corresponding external screw thread, is threaded connection between described axle sleeve 3 and described drill bit protective cap 9.
Embodiment two:
As shown in Figure 4, be different from the scheme of external diameter slightly larger than the internal diameter of described axle sleeve 3 of ball bearing 5 in embodiment one, the external diameter of described some ball bearings 5 is slightly less than the internal diameter of described axle sleeve 3, on the outer wall of described axle sleeve 3, the position of corresponding described ball bearing 5 is provided with fastening snap ring 10, and the outer wall of described some ball bearings 5 is entrenched on the inwall of described axle sleeve 3.The program, except can making axle core 4 and stablizing, also facilitates the installation processing of ball bearing 5 in flexible axle.
The foregoing is only the preferred embodiment of the invention; not in order to limit the invention; the any amendment done within all spirit in the invention and principle, equivalently to replace and improvement etc., within the protection domain that all should be included in the invention.
Claims (10)
1. an electric drill with flexible spindle, the flexible axle comprising motor, drill bit and both are connected, it is characterized in that, described flexible axle comprises axle sleeve and is sleeved on the axle core of described axle sleeve inside, described axle core is the shape of threads axle core of wire along axle center twisting, and described axle sleeve inside is radially fixedly installed some ball bearings; Described axle core is successively through the center of described some ball bearings, and be connected with described motor and drill bit respectively, described axle core is connected with the center interference of described some ball bearings.
2. electric drill with flexible spindle as claimed in claim 1, it is characterized in that, described axle core is connected by swivel nut with between described drill bit, and described swivel nut bottom is fixedly connected with described axle core, and described swivel nut top and described drill bit removably connect.
3. electric drill with flexible spindle as claimed in claim 2, it is characterized in that, described swivel nut top is provided with internal thread hole, described swivel nut top is connected with described drill bit by a hard axle, described hard axle lower end is provided with the external screw thread corresponding with described internal thread hole, and described hard axle top is provided with the axis hole be connected together with described drill bit.
4. electric drill with flexible spindle as claimed in claim 1, is characterized in that, the external diameter of described some ball bearings is slightly larger than the internal diameter of described axle sleeve, and the outer wall of described some ball bearings is entrenched on the inwall of described axle sleeve.
5. electric drill with flexible spindle as claimed in claim 1, it is characterized in that, the external diameter of described some ball bearings is slightly less than the internal diameter of described axle sleeve, on the outer wall of described axle sleeve, the position of corresponding described ball bearing is provided with fastening snap ring, and the outer wall of described some ball bearings is entrenched on the inwall of described axle sleeve.
6. electric drill with flexible spindle as claimed in claim 1, it is characterized in that, described axle sleeve is the soft axle sleeve that polyvinyl chloride is made, and is provided with enhancing structure sheaf in described axle sleeve layer wall.
7. electric drill with flexible spindle as claimed in claim 6, it is characterized in that, described enhancing structure sheaf is woven wire.
8. electric drill with flexible spindle as claimed in claim 1; it is characterized in that, be also equipped with drill bit protective cap, described drill bit protective cap is test tube shaped component; in described drill sleeve is loaded on by described drill bit protective cap, the port of described drill bit protective cap and the port of described axle sleeve removably connect.
9. electric drill with flexible spindle as claimed in claim 8; it is characterized in that; the port outer wall of described axle sleeve near described drill bit one end is provided with external screw thread, and described drill bit protective cap port inner wall is provided with the internal thread of corresponding specification, is threaded connection between described axle sleeve and described drill bit protective cap.
10. electric drill with flexible spindle as claimed in any one of claims 1-9 wherein, it is characterized in that, described axle core is the shape of threads axle core of stainless steel wire twisting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510713286.2A CN105195787A (en) | 2015-10-27 | 2015-10-27 | Soft shaft electric drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510713286.2A CN105195787A (en) | 2015-10-27 | 2015-10-27 | Soft shaft electric drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105195787A true CN105195787A (en) | 2015-12-30 |
Family
ID=54943924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510713286.2A Pending CN105195787A (en) | 2015-10-27 | 2015-10-27 | Soft shaft electric drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105195787A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107971525A (en) * | 2017-12-06 | 2018-05-01 | 郑州神利达钻采设备有限公司 | Soft multi-angle drilling device |
| CN108015719A (en) * | 2017-12-22 | 2018-05-11 | 中建八局第建设有限公司 | A kind of detachable type drill with dust-absorbing function |
| CN109610578A (en) * | 2018-12-29 | 2019-04-12 | 台州小眼睛科技有限公司 | A kind of sewer dredging device |
| CN109610579A (en) * | 2018-12-29 | 2019-04-12 | 台州小眼睛科技有限公司 | A kind of sewer dredging device convenient for storage |
| CN110017028A (en) * | 2019-04-26 | 2019-07-16 | 浙江湖州天强建筑材料有限公司 | A kind of reinforcing bar that uses built tightens equipment |
| CN112846789A (en) * | 2020-12-31 | 2021-05-28 | 大连长丰实业总公司 | Angle-adjustable cutting device |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB501072A (en) * | 1937-09-04 | 1939-02-21 | Bertram Oscar Morris | Improvements in holders for tools driven by flexible shafts |
| FR1545394A (en) * | 1967-11-27 | 1968-11-08 | Angle transmission, in particular for tools such as drills and screwdrivers and tools provided with such an angle transmission or the like | |
| GB2220729A (en) * | 1988-07-15 | 1990-01-17 | Bristol Myers Co | Angle drive device |
| DE4033108A1 (en) * | 1989-08-21 | 1991-04-25 | Harri Leskinen | Drilling rig with lightweight construction - is for drilling holes in concrete ceilings and has chassis mounted with higher output |
| CN1292313A (en) * | 1999-10-10 | 2001-04-25 | 周毓明 | Electric drill whose drill-chuck can be separated from driving motor |
| US20070053754A1 (en) * | 2005-09-08 | 2007-03-08 | Clinton Hartranft | Universal quick flex and method of use |
| US20100064860A1 (en) * | 2008-09-18 | 2010-03-18 | Combined Products Co. #1 Inc. | Extension shaft for holding a tool for rotary driven motion |
| US20110179894A1 (en) * | 2008-10-08 | 2011-07-28 | Ntn Corporation | Remote-controlled actuator |
| CN205183855U (en) * | 2015-10-27 | 2016-04-27 | 余雷 | Flexible axle electric drill |
-
2015
- 2015-10-27 CN CN201510713286.2A patent/CN105195787A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB501072A (en) * | 1937-09-04 | 1939-02-21 | Bertram Oscar Morris | Improvements in holders for tools driven by flexible shafts |
| FR1545394A (en) * | 1967-11-27 | 1968-11-08 | Angle transmission, in particular for tools such as drills and screwdrivers and tools provided with such an angle transmission or the like | |
| GB2220729A (en) * | 1988-07-15 | 1990-01-17 | Bristol Myers Co | Angle drive device |
| DE4033108A1 (en) * | 1989-08-21 | 1991-04-25 | Harri Leskinen | Drilling rig with lightweight construction - is for drilling holes in concrete ceilings and has chassis mounted with higher output |
| CN1292313A (en) * | 1999-10-10 | 2001-04-25 | 周毓明 | Electric drill whose drill-chuck can be separated from driving motor |
| US20070053754A1 (en) * | 2005-09-08 | 2007-03-08 | Clinton Hartranft | Universal quick flex and method of use |
| US20100064860A1 (en) * | 2008-09-18 | 2010-03-18 | Combined Products Co. #1 Inc. | Extension shaft for holding a tool for rotary driven motion |
| US20110179894A1 (en) * | 2008-10-08 | 2011-07-28 | Ntn Corporation | Remote-controlled actuator |
| CN205183855U (en) * | 2015-10-27 | 2016-04-27 | 余雷 | Flexible axle electric drill |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107971525A (en) * | 2017-12-06 | 2018-05-01 | 郑州神利达钻采设备有限公司 | Soft multi-angle drilling device |
| CN108015719A (en) * | 2017-12-22 | 2018-05-11 | 中建八局第建设有限公司 | A kind of detachable type drill with dust-absorbing function |
| CN108015719B (en) * | 2017-12-22 | 2024-02-13 | 中建八局第一建设有限公司 | Detachable drill bit with dust collection function |
| CN109610578A (en) * | 2018-12-29 | 2019-04-12 | 台州小眼睛科技有限公司 | A kind of sewer dredging device |
| CN109610579A (en) * | 2018-12-29 | 2019-04-12 | 台州小眼睛科技有限公司 | A kind of sewer dredging device convenient for storage |
| CN109610579B (en) * | 2018-12-29 | 2020-08-21 | 台州小眼睛科技有限公司 | Sewer dredge convenient to storage |
| CN109610578B (en) * | 2018-12-29 | 2021-05-18 | 重庆啄木鸟网络科技有限公司 | Sewer dredger |
| CN110017028A (en) * | 2019-04-26 | 2019-07-16 | 浙江湖州天强建筑材料有限公司 | A kind of reinforcing bar that uses built tightens equipment |
| CN110017028B (en) * | 2019-04-26 | 2021-06-18 | 中建二局第一建筑工程有限公司 | Reinforcing steel bar tightening equipment for building |
| CN112846789A (en) * | 2020-12-31 | 2021-05-28 | 大连长丰实业总公司 | Angle-adjustable cutting device |
| CN112846789B (en) * | 2020-12-31 | 2022-12-06 | 大连长丰实业总公司 | Angle-adjustable cutting device |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151230 |