CN108581953A - A kind of disconnected screw withdrawing device - Google Patents
A kind of disconnected screw withdrawing device Download PDFInfo
- Publication number
- CN108581953A CN108581953A CN201810690432.8A CN201810690432A CN108581953A CN 108581953 A CN108581953 A CN 108581953A CN 201810690432 A CN201810690432 A CN 201810690432A CN 108581953 A CN108581953 A CN 108581953A
- Authority
- CN
- China
- Prior art keywords
- work department
- drill bit
- screw
- magnetic
- shell
- 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.)
- Granted
Links
- 230000007246 mechanism Effects 0.000 claims abstract description 12
- 230000002159 abnormal effect Effects 0.000 claims description 17
- 238000009434 installation Methods 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 3
- 230000005389 magnetism Effects 0.000 claims description 2
- 230000007423 decrease Effects 0.000 claims 1
- 230000005611 electricity Effects 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 4
- 229910052742 iron Inorganic materials 0.000 abstract description 3
- 230000008878 coupling Effects 0.000 description 6
- 238000010168 coupling process Methods 0.000 description 6
- 238000005859 coupling reaction Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 238000000605 extraction Methods 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000010079 rubber tapping Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000000399 orthopedic effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
- B25B27/18—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same withdrawing broken threaded parts or twist drills
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling And Boring (AREA)
Abstract
A kind of withdrawing device of disconnected screw provided by the invention, including drill bit, magnetic tubaeform cover, driving mechanism, air draft system and shell, wherein one end of shell is open end, and the other end is blind end；The bottom at housings close end is arranged in air draft system；Magnetic tubaeform cover is mounted on the open end of shell, and the inner cavity of magnetic tubaeform cover is communicated with the inner cavity of shell；Meanwhile driving mechanism is arranged in shell and is connect with one end of drill bit, the other end of drill bit stretches out outside magnetic tubaeform cover；The present invention by driving mechanism while driving drill bit to take out disconnected screw, due to the effect of air draft system air-breathing and magnetic tubaeform cover, the iron filings that drill bit generates can be inhaled into magnetic tubaeform cover, then be accumulated near strainer, without falling in working site.
Description
Technical field
The present invention relates to machining tools arts, and in particular to a kind of disconnected screw withdrawing device.
Background technology
The use of screw is very universal, in use, one word decorative pattern of nut or ten caused by due to fortuitous event
Situations such as word decorative pattern stripped thread, nut fractures, screw extraction, is also very common.Without the auxiliary of nut, how to take out embedded in spiral shell
Screw in nail hole is at a unusual stubborn problem.Machinery field works as orthopedics patient in this way, medical field of orthopaedics is more intractable
How after internal fixing screws are due to unexpected be broken, the screw that breaks is taken out under the premise of reducing the injury to patient, be
A field of orthopaedics problem urgently to be resolved hurrily.
Invention content
It is an object of the invention to a kind of withdrawing devices of disconnected screw, solve the existing disconnected screw in screw hole
In the presence of the defect that can not take out or take out difficulty.
In order to achieve the above object, the technical solution adopted by the present invention is：
A kind of withdrawing device of disconnected screw provided by the invention, including drill bit, magnetic tubaeform cover, driving mechanism, air draught
System and shell, wherein one end of shell is open end, and the other end is blind end；Air draft system is arranged at housings close end
Bottom；
Magnetic tubaeform cover is mounted on the open end of shell, and the inner cavity of magnetic tubaeform cover is communicated with the inner cavity of shell；
Meanwhile driving mechanism is arranged in shell and is connect with one end of drill bit, the other end of drill bit stretches out outside magnetic tubaeform cover；
Drill bit includes work department, and the work department includes the first work department, the second work department and third work department, wherein
First work department, the second work department and third work department are an integral structure, the shank connection of third work department and drill bit, and first
Work department is the end of drill bit, and the both ends of the second work department are connect with the first work department and third work department respectively；
First work department is spiral bit, and the second work department is regular screw threads, and third work department is abnormal screw thread, and three
The rotation direction of work department is oppositely oriented with disconnected screw.
Preferably, third work department and the intersection of the second work department are incremented by successively to end without leave for abnormal screw thread big；
The thread form sharpness of abnormal screw thread is successively decreased from third work department and the intersection of the second work department to end successively.
Preferably, the maximum major diameter of abnormal screw thread is less than the path of disconnected screw.
Preferably, driving mechanism is motor, and the output shaft of motor is connect with drill bit；Meanwhile being arranged between motor and drill bit
There is collet.
Preferably, one end of collet is installation end, and the other end is to screw end, and installation end and screwing is provided with transition between holding
Section, changeover portion and installation end are an integral structure；
External screw thread is offered on changeover portion；The one end for screwing end offers centre bore, and the other end offers threaded hole, described
Threaded hole is connected with the external screw thread on changeover portion, screws in the centre bore on end and is equipped with clamp spring, the clamp spring and drill bit
Connection.
Preferably, air draft system includes fan electromotor, and the output shaft of fan electromotor is connected with fan.
Preferably, shell includes outer housing and inner housing, and inner housing is arranged within the outer shell, and the bottom of outer housing is opened
There is gas outlet in beginning, while air-breathing air duct is formed between inner housing, gas outlet, air-breathing air duct and magnetic tubaeform cover；Meanwhile
Air draft system is arranged in the bottom of outer housing, and driving mechanism is arranged in the bottom of inner housing.
Preferably, magnetic tubaeform cover includes the cover body of magnetic texure, and the small end of cover body offers external screw thread, the outer spiral shell
Line is connect with the screw-internal thread fit of outer housing open end, meanwhile, it is arranged between the open end of outer housing and the male end of cover body
There is filter screen, sealing ring is provided between the filter screen and inner housing.
Preferably, it is connected by connector between outer housing and inner housing.
Compared with prior art, the beneficial effects of the invention are as follows：
Drill bit is directed at the screw that breaks, then passes through driving mechanism band by a kind of withdrawing device of disconnected screw provided by the invention
Dynamic drill bit is started to work, wherein is drilled out an aperture in the upper end of disconnected screw with the first work department of drill bit, is waited for the first work department
Completely into rear, suitably turn rotating speed down, if screw material is harder, do not need reduction of speed；The second work department starts tapping at this time, etc.
After third work department enters, drill bit is actually reversely twisting into two parts screw, and continues to rotate into third work department, resistance
Continue to become larger, until drill bit can not continue to produce relative rotation with disconnected screw, at this moment drill bit continue rotation can be with dynamic circuit breaker spiral shell
Nail is exited from threaded hole.During the work time, while air draft system is opened, due to air draft system air-breathing and magnetic tubaeform cover
Effect, the iron filings that drill bit generates can be inhaled into magnetic tubaeform cover, then accumulate near strainer, without falling
Working site.
Further, since the major diameter of abnormal screw thread is becoming larger and thread form is also in rust, with the continuation of third work department
It rotates into, resistance continues to become larger, so that remains stationary state between drill bit and disconnected screw, finally by disconnected screw from screw thread
It is exited in hole.
Further, the filter screen being arranged between magnetic loudspeaker cover body and inner housing, prevents dust from falling in shell.
Description of the drawings
Fig. 1 is the explosive view of withdrawing device of the present invention；
Fig. 2 is the sectional view of the front view of withdrawing device of the present invention；
Fig. 3 is the structural schematic diagram of drill bit；
Fig. 4 is the structural schematic diagram of collet；
Fig. 5 is the bottom view of outer housing；
Fig. 6 is the structural schematic diagram of magnetic tubaeform cover；
Wherein, 1, drill bit 101, clamping part 102, work department 2, magnetic tubaeform cover 201, external screw thread 202, cover body 203, interior
It is hole 204, filter screen 3, collet 4, washer 5, shaft coupling 6, motor 7, fan 8, fan electromotor 9, shell 901, gas outlet 902, outer
Shell 903, inner housing 904, connector 905, air-breathing air duct 906, internal thread.
Specific implementation mode
Below in conjunction with the accompanying drawings, the present invention is described in more detail.
As shown in Figure 1 and Figure 2, the withdrawing device of a kind of disconnected screw provided by the invention, including drill bit 1, magnetic tubaeform cover
2, collet 3, washer 4, shaft coupling 5, motor 6, fan 7, fan electromotor 8 and shell 9, wherein shell 9 includes 902 He of outer housing
One end of inner housing 903, outer housing 902 is open end, and the other end is blind end.
Specifically：The open end of outer housing 902 offers internal thread 906, and internal thread 906 is opened on magnetic tubaeform cover 2
If external screw thread 201 be connected；The bottom of outer housing 902 is equipped with fan electromotor 8, and the output shaft of the fan electromotor 8 connects
It is connected to fan 7.
One end of inner housing 903 is open end, and the other end is blind end, wherein the open end of inner housing and outer housing 902
Open end connection.
Connector 4 is provided on the lateral wall of inner housing 903, besides shell 902 is connected by connector 4.
The bottom of inner housing 903 is equipped with motor 6, and the output shaft of motor 6 is connected with shaft coupling 5, the free end of shaft coupling 5
It stretches out outside inner housing 903, and is connect with the one end for the collet 3 being placed in 2 inner cavities of magnetic tubaeform cover, wherein shaft coupling 5 and folder
Washer 4 is provided between first 3.
The other end of collet 3 is connected with drill bit 1, meanwhile, the free end of drill bit 1 is stretched out outside magnetic tubaeform cover 2.
As shown in figure 3, drill bit 1 includes clamping part 101 and work department 102, wherein clamping part 101 is connect with collet 3；Work
Make portion 102 to stretch out outside magnetic tubaeform cover 2 comprising three parts, respectively the first work department c, the second work department d and third work
Making portion e, wherein the first work department c is spiral bit, and the second work department d is regular screw threads, and third work department e is abnormal screw thread,
The rotation direction of three work departments is derotation.
Specifically：The diameter of first work department c is between the Major Diam and path of the second work department d；
Near the intersection of third work department e and the second work department d, the major diameter of abnormal screw thread is approximately equal to the second work department
The major diameter of d regular screw threads, and further away from intersection, the major diameter of abnormal screw thread is bigger；
Near the intersection of third work department e and the second work department d, the thread form sharpness of abnormal screw thread is equal to
The regular screw threads of two work department d, and further away from intersection, the thread form of abnormal screw thread is more blunt.
In the present solution, being drilled by the first work department c, the entrance for the second work department d provides space；Second work
Portion d continues a bit of screw thread of tapping, and the abnormal screw thread of third work department e is facilitated to enter, and third work department e is for increasing the first work
The resistance for making generation relative rotary motion between portion c and screw, to provide the turning moment for reversely back-outing screw.
Advantageous effect is, due to the increase of relative rotation resistance, realization between drill bit and disconnected screw is actually made to be connected,
The turning moment of drill bit can be passed to disconnected screw, so as to back-out disconnected screw.
As shown in figure 4, one end of collet 3 is installation end 301, the other end is to screw end 302, installation end 301 and screws end
Changeover portion 303 is provided between 302, changeover portion 303 and installation end 301 are an integral structure.
Wherein, installation end 301 is connect with shaft coupling 5；External screw thread is offered on changeover portion 303；It opens the one end for screwing end 302
Equipped with centre bore, the other end offers threaded hole, and the threaded hole is connected with the external screw thread on changeover portion 303, screws end
Clamp spring 304 is installed, the clamp spring 304 is connect with the clamping part 101 of drill bit 1 in the centre bore on 302.
When screwing end 302 when screwing, compressing clamp spring 304 brings it about flexible deformation to contract, to clamp drill bit 1
Clamping part 101, realize clamping to drill bit 1.
As shown in figure 5, the blind end of outer housing 902 offers gas outlet 901,901 circular array formula of the gas outlet
Arrangement.
Air-breathing air duct 905 is provided between outer housing 902 and inner housing 903, the air-breathing air duct 905 is for being connected to magnetism
The inner cavity of the inner cavity and outer housing 902 of tubaeform cover 2；The structure make when fan electromotor 8 drive 7 high speed rotation of fan when, can
It, will be in the magnetic tubaeform cover of screw powder sucking to generate air suction in air entry.
Wherein, air flowing signal is as shown in filament with the arrow in Fig. 2.
As shown in fig. 6, magnetic tubaeform cover 2 includes cover body 202, the small end of cover body 202 offers external screw thread 201, described
External screw thread 201 is connect with the screw-internal thread fit of 901 open end of outer housing, meanwhile, the open end of outer housing 903 and the outer spiral shell of cover body
It is provided with filter screen 204 between line end 201, sealing ring 203 is provided between the filter screen 204 and inner housing 903.
Cover body 202 is magnetic texure, can adsorb screw powder, and iron powder is prevented to be sucked into shell 9.
Operation principle is：
The screw thread of common screw is usually dextrorotation, after this screw extraction, the method for the screw that broken using present invention taking-up
For：
1. selecting the derotation drill bit being dimensioned for, size is suitably meant, the abnormal screw thread part of drill bit is maximum big
Diameter should be less than the path of screw to be removed.
2. den bohrkopf einsetzen and magnetic tubaeform cover, rotation direction switch are adjusted to derotation, then make drilling bit high-speed using speed-regulating switch
Fan swicth is opened in rotation.
3. drill out an aperture in the upper end of disconnected screw with the first work department c of drill bit, wait for the first work department completely into
Afterwards, it suitably turns rotating speed down, if screw material is harder, does not need reduction of speed；The regular screw threads of the second work department d start to attack at this time
Silk, etc. after thirds work department e enters, the major diameter due to abnormal screw thread is becoming larger and thread form is also in rust, the rotational resistance of drill bit 1
Become larger, at this moment drill bit 1 is actually reversely twisting into two parts screw, and continues to rotate into third work department e, and resistance continues to become
Greatly, until drill bit 1 can not continue to produce relative rotation with disconnected screw, at this moment drill bit 1 continue rotation can with dynamic circuit breaker screw from
It is exited in threaded hole.
Simultaneously in the process, due to the effect of 7 air-breathing of fan and magnetic tubaeform cover 2, the iron filings that drill bit 1 generates can quilt
It is drawn into magnetic tubaeform cover 2, then accumulates near strainer, without falling in working site.And magnetic tubaeform cover 2
Due to detachable, replacement and cleaning are also very convenient.
Claims (9)
1. a kind of withdrawing device of disconnected screw, it is characterised in that：Including drill bit (1), magnetic tubaeform cover (2), driving mechanism, suction
Wind system and shell (9), wherein one end of shell (9) is open end, and the other end is blind end；Air draft system is arranged in shell
(9) bottom of blind end；
Magnetic tubaeform cover (2) is mounted on the open end of shell (9), and the inner cavity of magnetic tubaeform cover (2) and shell (9) is interior
Chamber communicates；Meanwhile driving mechanism setting is connect in shell (9) and with one end of drill bit (1), the other end of drill bit (1) stretches out
Magnetic tubaeform cover (2) is outside；
Drill bit (1) includes work department (102), and the work department (102) includes the first work department (c), the second work department (d) and the
Three work departments (e), wherein the first work department (c), the second work department (d) and third work department (e) are an integral structure, third
Work department (e) is connect with the shank of drill bit (1), and the first work department (c) is the end of drill bit, the both ends point of the second work department (d)
It is not connect with the first work department (c) and third work department (e)；
First work department (c) is spiral bit, and the second work department (d) is regular screw threads, and third work department (e) is abnormal screw thread,
And the rotation direction of three work departments and disconnected screw is oppositely oriented.
2. a kind of withdrawing device of disconnected screw according to claim 1, it is characterised in that：The big third without leave of abnormal screw thread
Work department (e) and the intersection of the second work department (d) are incremented by successively to end；The thread form sharpness of abnormal screw thread is from third work
Make portion (e) and the intersection of the second work department (d) successively decreases successively to end.
3. a kind of withdrawing device of disconnected screw according to claim 1, it is characterised in that：The maximum major diameter of abnormal screw thread is small
In the path of disconnected screw.
4. a kind of withdrawing device of disconnected screw according to claim 1, it is characterised in that：Driving mechanism is motor (6), electricity
The output shaft of machine (6) is connect with drill bit (1)；Meanwhile collet (3) is provided between motor (6) and drill bit (1).
5. a kind of withdrawing device of disconnected screw according to claim 4, it is characterised in that：One end of collet (3) is installation
It holds (301), the other end is to screw end (302), installation end (301) and screws and is provided with changeover portion (303), mistake between end (302)
It crosses section (303) and installation end (301) is an integral structure；
Changeover portion offers external screw thread on (303)；The one end for screwing end (302) offers centre bore, and the other end offers screw thread
Hole, the threaded hole are connected with the external screw thread on changeover portion (303), screw in the centre bore on end (302) and be equipped with card
Spring (304), the clamp spring (304) connect with drill bit (1).
6. a kind of withdrawing device of disconnected screw according to claim 1, it is characterised in that：Air draft system includes fan electromotor
(8), the output shaft of fan electromotor (8) is connected with fan (7).
7. a kind of withdrawing device of disconnected screw according to claim 1, it is characterised in that：Shell (9) includes outer housing
(902) it is arranged in the inside of outer housing (902) with inner housing (903), inner housing (903), the bottom of outer housing (903) is begun with
Gas outlet (901), while air-breathing air duct (905) is formed between inner housing (903), gas outlet (901), air-breathing air duct
(905) it is communicated between magnetic tubaeform cover (2)；Meanwhile air draft system is arranged in the bottom of outer housing (902), driving mechanism
Bottom in inner housing (903) is set.
8. a kind of withdrawing device of disconnected screw according to claim 7, it is characterised in that：Magnetism is tubaeform, and cover (2) includes
The small end of the cover body (202) of magnetic texure, cover body (202) offers external screw thread (201), the external screw thread (201) and outer housing
(902) the screw-internal thread fit connection of open end, meanwhile, between the open end of outer housing (902) and the male end (201) of cover body
It is provided with filter screen (204), sealing ring (203) is provided between the filter screen (204) and inner housing (903).
9. a kind of withdrawing device of disconnected screw according to claim 7, it is characterised in that：Outer housing (902) and inner housing
(903) it is connected by connector (904) between.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810690432.8A CN108581953B (en) | 2018-06-28 | 2018-06-28 | Broken screw take-out device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810690432.8A CN108581953B (en) | 2018-06-28 | 2018-06-28 | Broken screw take-out device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108581953A true CN108581953A (en) | 2018-09-28 |
| CN108581953B CN108581953B (en) | 2024-03-19 |
Family
ID=63634961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810690432.8A Active CN108581953B (en) | 2018-06-28 | 2018-06-28 | Broken screw take-out device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108581953B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109015531A (en) * | 2018-10-15 | 2018-12-18 | 安徽铸星机械制造有限公司 | A kind of broken end screw rod removing method |
| CN109176410A (en) * | 2018-10-27 | 2019-01-11 | 徐州巨业机械制造有限公司 | It is a kind of to facilitate the device for taking out disconnected arm screw |
| CN109464185A (en) * | 2019-01-07 | 2019-03-15 | 张树波 | A kind of orthopedic nail extractor convenient for taking out broken nail |
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| JP2011000648A (en) * | 2009-06-16 | 2011-01-06 | Chugoku Electric Power Co Inc:The | Shaft member removing tool and method for removing shaft member |
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| CN106976043A (en) * | 2017-05-17 | 2017-07-25 | 朱贝康 | A kind of dustless environment protecting electric hammer with dust catcher |
| CN206623054U (en) * | 2017-02-16 | 2017-11-10 | 张伟 | A kind of electric hammer dust guard |
| CN107349008A (en) * | 2017-07-12 | 2017-11-17 | 王丰岩 | Damage screw and take out drill bit and device |
| CN208575786U (en) * | 2018-06-28 | 2019-03-05 | 榆林学院 | A kind of disconnected screw withdrawing device |
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| GB361908A (en) * | 1929-12-28 | 1931-11-27 | Greenfield Tap & Die Corp | A device for extracting screws |
| US3850254A (en) * | 1972-07-06 | 1974-11-26 | R Hirdes | Suction device for extracting drill chippings |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109015531A (en) * | 2018-10-15 | 2018-12-18 | 安徽铸星机械制造有限公司 | A kind of broken end screw rod removing method |
| CN109015531B (en) * | 2018-10-15 | 2020-05-12 | 安徽铸星机械制造有限公司 | Method for taking out broken-end screw |
| CN109176410A (en) * | 2018-10-27 | 2019-01-11 | 徐州巨业机械制造有限公司 | It is a kind of to facilitate the device for taking out disconnected arm screw |
| CN109464185A (en) * | 2019-01-07 | 2019-03-15 | 张树波 | A kind of orthopedic nail extractor convenient for taking out broken nail |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108581953B (en) | 2024-03-19 |
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