CN114434375A - Screw loading and unloading assistor - Google Patents
Screw loading and unloading assistor Download PDFInfo
- Publication number
- CN114434375A CN114434375A CN202111643770.4A CN202111643770A CN114434375A CN 114434375 A CN114434375 A CN 114434375A CN 202111643770 A CN202111643770 A CN 202111643770A CN 114434375 A CN114434375 A CN 114434375A
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- planetary
- screw
- ring
- gear
- bearing
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- 210000004907 gland Anatomy 0.000 claims description 17
- 238000005299 abrasion Methods 0.000 abstract description 4
- 230000001360 synchronised effect Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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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
- B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
- B25F5/001—Gearings, speed selectors, clutches or the like specially adapted for rotary tools
Abstract
The invention discloses a screw assembling and disassembling assistor, which comprises a mounting seat, a sun gear and planet gears, wherein the sun gear and the planet gears are rotatably arranged in the mounting seat; the planetary gear type screwdriver is characterized in that a power input part for driving the planetary gear to rotate is arranged in the central gear, a screwdriver head is arranged in each planetary gear and is coaxial with the planetary gear, and a power output end of each screwdriver head extends out of the mounting seat. The screw assembling device can realize synchronous assembly of screws, avoid collision and abrasion of screw teeth between the screws and screw holes, and improve the connection strength and the assembling efficiency.
Description
Technical Field
The invention relates to the technical field of screw tightening devices, in particular to a screw assembling and disassembling assistor.
Background
Threaded connections are one of the most common ways of mechanical fastening. The most of the parts of the product need to be installed by using screws.
For some components, the attachment surface carries a plurality of screws and is arranged circumferentially, as is most common with flanges. At present, for the assembly and disassembly of the parts, the screws are generally required to be screwed or unscrewed one by adopting the existing screw tightening device. In order to prevent the thread from being damaged, the screws cannot be screwed or unscrewed at one time, and the conventional screw tightening device usually needs to perform more than two times of circulating operation on each screw.
On one hand, the screwing or unscrewing operation is low in efficiency, and the production efficiency is influenced; on the other hand, as the screws are screwed in sequence and are not connected with the screw holes synchronously, the parts are deflected ceaselessly in the assembling and disassembling process, the screws and the screw teeth of the screw holes are easy to collide and abrade, and the connecting effect is influenced after the screws are assembled and disassembled for many times.
In addition, to some precision work pieces that the installation accuracy requires highly, require highly to threaded connection intensity, all have specific requirement to the thread interlock of screw and screw to and the number of turns of screwing up of screw, adopt current screw tightening device, need the number of turns of screwing up of manual calculation screw, it is unanimous to be difficult to guarantee the number of turns of screwing up of each screw, and is difficult to avoid the screw tooth condition of colliding with between screw and the screw.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a screw assembling and disassembling assistor, which can realize synchronous assembly of screws, avoid collision and abrasion of screw teeth between the screws and screw holes, and improve connection strength and assembly efficiency.
In order to solve the technical problem, the invention provides a screw assembling and disassembling assistor, which comprises a mounting seat, a sun gear and planet gears, wherein the sun gear and the planet gears are rotatably arranged in the mounting seat;
the planetary gear is characterized in that a power input part for driving the planetary gear to rotate is arranged in the central gear, a screwdriver bit which is coaxial with the planetary gear is arranged in each planetary gear, and a power output end of each screwdriver bit extends out of the mounting seat.
As an improvement of the scheme, the end face of the power output end of each screwdriver bit is positioned on the same plane.
As an improvement of the above scheme, a central positioning ring corresponding to the central gear is formed on the mounting seat, the central gear is rotatably connected with the central positioning ring, the power input member is provided with a driving bayonet coaxial with the central gear, and a central through hole opposite to the driving bayonet is formed in the central positioning ring.
As an improvement of the above scheme, a central bearing is sleeved outside the central positioning ring, a first positioning step abutted against the upper end face of the inner ring of the central bearing is arranged on the outer wall of the central positioning ring, a central gland is sleeved in the central through hole, a first flange abutted against the lower end face of the inner ring of the central bearing is arranged on the outer wall of one end of the central gland, a clamping groove is arranged on the outer wall of the other end of the central gland, and a clamp spring abutted against the upper end face of the central positioning ring is clamped in the clamping groove;
the central gear is sleeved outside the central bearing and is in lap joint with the upper end face of the central bearing outer ring.
As an improvement of the above scheme, a planetary positioning ring corresponding to the planetary gear is formed on the mounting seat, the screwdriver bit penetrates through the planetary gear, and the handle portion of the screwdriver bit extends into the planetary positioning ring and is rotatably connected with the planetary positioning ring through a planetary bearing.
As an improvement of the above scheme, the inner wall of the planet positioning ring is provided with a second positioning step abutted against the upper end face of the outer ring of the planet bearing, the end face of the planet positioning ring is fixedly provided with a planet gland, and the planet gland is abutted against the lower end face of the outer ring of the planet bearing.
As an improvement of the above scheme, a second flange is arranged on the outer wall of the handle of the screwdriver head, the second flange is abutted to the upper end face of the inner ring of the planetary bearing, a sleeve connected with the screwdriver head is sleeved on the screwdriver head, and the sleeve is abutted to the lower end face of the inner ring of the planetary bearing.
As an improvement of the scheme, the sleeve is in threaded connection with the outer wall of the screwdriver head.
As an improvement of the scheme, a third positioning step is arranged on the outer wall of the screwdriver head, the upper end face of the planetary gear is abutted against the third positioning step, and the planetary gear and the sleeve are fixed through a locking screw.
As an improvement of the scheme, the screwdriver further comprises an end cover, the end cover is provided with a through hole matched with the screwdriver head, and the end cover is fixedly connected with the mounting seat.
The implementation of the invention has the following beneficial effects:
the invention provides a screw loading and unloading assistor, which is characterized in that the power output end of a screwdriver head is matched with screw heads of screws which are arranged in a circumferential manner, a power input part is driven to drive a central gear to rotate, each planetary gear can be driven to rotate, the screwdriver head which is coaxially arranged with the planetary gear rotates along with the planetary gear, and the rotating directions of each planetary gear and each screwdriver head are the same, so that each screwdriver head can synchronously drive each screw which is arranged in the circumferential manner to rotate, the synchronous screwing or unscrewing of the screws is realized, and the operation efficiency is high;
because the screws arranged in the circumferential mode are driven by the screw assembling and disassembling assistor to rotate in the same direction and synchronously, the screws and the screw holes are connected synchronously, the parts cannot deflect in the assembling and disassembling process, the screws and the screw teeth of the chambering are stably meshed, the probability of collision and abrasion of the screw teeth is reduced, and the connection reliability is good.
Drawings
FIG. 1 is a schematic perspective view of a screw mounting/dismounting aid according to an embodiment of the present invention;
FIG. 2 is a bottom view of the end cap of FIG. 1 with the end cap removed;
FIG. 3 is a front view of FIG. 1;
FIG. 4 is a schematic view of the cross-sectional A-A structure of FIG. 3;
FIG. 5 is an exploded view along A-A of FIG. 3;
FIG. 6 is a schematic view of the assembly of the planetary gear of FIG. 2 with a screwdriver bit;
fig. 7 is a schematic view of a sectional structure B-B of fig. 6.
Detailed Description
To make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 and 2, the present invention provides an embodiment of a screw assembling and disassembling auxiliary device, including a mounting base 1, and a sun gear 2 and planet gears 3 rotatably disposed in the mounting base 1, wherein the planet gears 3 are disposed around a circumferential array of the sun gear 2 and meshed with the sun gear 2; a power input part 4 for driving the central gear 2 to rotate is arranged in the central gear 2, a screwdriver bit 5 is coaxially arranged in each planetary gear 3, and with reference to fig. 3 and 4, a power output end 52 of each screwdriver bit 5 extends out of the mounting base 1.
When the screw assembling and disassembling assistor is used, the power output end 52 of the screwdriver bit 5 is matched with the screw heads of the screws which are arranged in a circumferential manner, the central gear 2 is driven to rotate by driving the power input part 4, the planetary gears 3 can be driven to rotate, the screwdriver bits 5 which are arranged coaxially with the planetary gears 3 rotate along with the planetary gears, and the rotating directions of the planetary gears 3 and the screwdriver bits 5 are the same, so that the screwdriver bits 5 can synchronously drive the screws which are arranged in the circumferential manner to rotate, the screws can be synchronously screwed or unscrewed, and the operation efficiency is high; because the screws arranged in the circumferential mode are driven by the screw assembling and disassembling assistor to rotate in the same direction and synchronously, the screws and the screw holes are connected synchronously, the parts cannot deflect in the assembling and disassembling process, the screws and the screw teeth of the chambering are stably meshed, the probability of collision and abrasion of the screw teeth is reduced, and the connection reliability is good.
The end surface of the power take-off 52 of each screwdriver bit 5 in this embodiment is preferably located in the same plane, so that each screwdriver bit 5 ensures the same stroke of the screws when driving them in rotation, and the screws are connected to the threaded holes synchronously.
It should be noted that the screw handling aid of the present embodiment can be used to simultaneously tighten or loosen screws located on the same circumference, and the screws located on the same circumference include not only screws in a circumferential array, but also screws located on the same circumference where the circumferential array is missing.
Specifically, referring to fig. 5, in this embodiment, a detachable end cover 6 is disposed on the mounting base 1, and the planetary gear 3 and the sun gear 2 are disposed in a containing cavity formed by the end cover 6 and the mounting base 1, so as to prevent external debris from entering a meshing portion between the planetary gear 3 and the sun gear 2 and affecting transmission. The end cover 6 is provided with a through hole 61 matched with the screwdriver head 5, and the power output end 52 of the screwdriver head 5 penetrates through the through hole 61 and extends out of the accommodating cavity.
The mounting base 1 of the present embodiment is formed with a center positioning ring 11 corresponding to the sun gear 2, and planet positioning rings 12 provided in one-to-one correspondence with the planet gears 3. The central gear 2 is rotatably connected with a central positioning ring 11, the planetary gears 3 are rotatably connected with a planetary positioning ring 12, and each planetary gear 3 is meshed with the central gear 2.
The power input part 4 is provided with a driving bayonet 41 which is coaxial with the central gear 2, a central through hole 13 which is opposite to the driving bayonet 41 is arranged in the central positioning ring 11, and the central through hole 13 penetrates through the mounting seat 1. The cross section of the driving bayonet 41 is preferably polygonal, and a rotating shaft matched with the driving bayonet 41 extends into the driving bayonet 41 through the central through hole 13, so that the power input piece 4, the central gear 2, the planetary gear 3 and the screwdriver bit 5 can be driven to rotate, and the screw can be screwed or unscrewed.
The mounting base 1 of this embodiment is provided with a connecting hole 14 for connecting with an external power component, and the external power component drives the rotating shaft to drive the power input member 4, the sun gear 2, the planetary gear 3 and the screwdriver bit 5 to rotate, so as to realize automatic screwing or unscrewing of the screw.
11 overcoat of center holding ring is equipped with central bearing 7, the outer wall of center holding ring 11 is equipped with the first location step 111 with the up end butt of center bearing 7 inner circle, center through-hole 13 endotheca is equipped with central gland 8, the outer wall of 8 one end of center gland is equipped with the first flange 81 with the lower terminal surface butt of center bearing 7 inner circle, the outer wall of the 8 other end of center gland is equipped with draw-in groove 82, draw-in groove 82 inside callipers is equipped with the jump ring 83 with the up end butt of center holding ring 11. The central gear 2 is sleeved outside the central bearing 7 and is in lap joint with the upper end face of the outer ring of the central bearing 7. The power input member 4 and the sun gear 2 are fixed through axially arranged locking screws.
The screwdriver bit 5 penetrates through the planetary gear 3, one end of the screwdriver bit is a handle part 51, the other end of the screwdriver bit is a power output end 52, and the handle part 51 extends into the planetary positioning ring 12 and is rotatably connected with the planetary positioning ring 12 through a planetary bearing 9.
The inner wall of planet holding ring 12 be equipped with the second location step 121 of the up end butt of planet bearing 9 outer lane, the fixed planet gland 10 that is equipped with of terminal surface of planet holding ring 12, planet gland 10 with the lower terminal surface butt of planet bearing 9 outer lane.
With reference to fig. 6 and 7, a second flange 511 is disposed on an outer wall of the shank 51 of the screwdriver bit 5, the second flange 511 abuts against an upper end face of an inner ring of the planetary bearing 9, a sleeve 53 connected with the screwdriver bit 5 is sleeved on the screwdriver bit 5, and the sleeve 53 abuts against a lower end face of the inner ring of the planetary bearing 9.
The sleeve 53 and the planetary gear 3 can be connected with the screwdriver bit 5 through keys, pins and the like to realize torque transmission.
The sleeve 53 is preferably in threaded connection with the outer wall of the screwdriver bit 5, and a pin hole 531 for a pin to extend into the screwdriver bit 5 is formed in the sleeve 53. By connecting the sleeve 53 and the screwdriver bit 5 in a threaded manner, the sleeve 53 can conveniently lock the planetary bearing 9 below the second flange 511, meanwhile, torque is transmitted between the sleeve 53 and the screwdriver bit 5 through the pin, and torque is transmitted between the planetary gear 3 and the sleeve 53 through the locking screw, so that power output is realized.
The outer wall of the handle part 51 of the screwdriver bit 5 is provided with a third positioning step 512, the upper end surface of the planetary gear 3 is abutted to the third positioning step 512, the planetary gear 3 and the sleeve 53 are fixed through a locking screw, the torque transmission of the planetary gear 3 between the sleeve 53 is realized, and the planetary gear 3 is prevented from moving axially.
The assembly process of the screw handling aid of this embodiment is as follows:
(1) assemble planetary gear 3, screwdriver bit 5 and mount pad 1: specifically, the planetary bearing 9 and the sleeve 53 are sequentially sleeved on the screwdriver bit 5, and the sleeve 53 is in threaded connection with the handle part 51 of the screwdriver bit 5, so that the sleeve 53 locks the planetary bearing 9 below the second flange 511; fixing the planetary gear 3 and the sleeve 53 by a locking screw, enabling the upper end surface of the planetary gear 3 to be abutted against the third positioning step 512, and inserting a pin into the pin hole 531 of the sleeve 53 and the screwdriver bit 5;
the planet gland 10 is abutted against the lower end face of the outer ring of the planet bearing 9 and is fixed with the end face of the planet positioning ring 12;
(2) assembling the central gear 2, the power input part 4 and the mounting seat 1: specifically, the central gear 2 and the power input part 4 are fixed through a locking screw, the central gear 2 is sleeved outside the central bearing 7 and is lapped with the upper end face of the outer ring of the central bearing 7;
abutting a first flange 81 of the central gland 8 against the lower end face of an inner ring of the central bearing 7, so that the upper end face of the inner ring of the central bearing 7 abuts against a first positioning step 111 of the central positioning ring 11, clamping a clamp spring 83 into a clamping groove 82 of the central gland 8, and clamping the clamp spring 83;
(3) the power output end 52 of the screwdriver bit 5 is made to pass through the through hole 61 of the end cover 6 and fix the end cover 6 with the mounting base 1.
In summary, the implementation of the present invention has the following beneficial effects:
1. the invention has simple structure and is easy to manufacture and assemble;
2. according to different shapes of the screw heads, the proper screwdriver head 5 can be selected for assembly, so that the universality is high;
3. the time of the product during screw installation can be greatly reduced, and the installation efficiency is improved;
4. when the parts are assembled and disassembled, the screw precession depths of all screws are the same, the parts are assembled in a translation manner, the whole assembling and disassembling process is free from overturning, and the collision between the screws and screw holes caused by asynchronous movement of all screws is avoided;
5. the number of turns of the screw can be easily controlled when each screwdriver head 5 screws or unscrews the screw, and the screwing depth of the screw is simple and controllable;
6. the invention is particularly suitable for loading and unloading precise workpieces with high requirements on installation precision and high requirements on threaded connection strength.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (10)
1. A screw assembling and disassembling assistor is characterized by comprising a mounting seat, a sun gear and planet gears, wherein the sun gear and the planet gears are rotatably arranged in the mounting seat;
the planetary gear is characterized in that a power input part for driving the planetary gear to rotate is arranged in the central gear, a screwdriver bit which is coaxial with the planetary gear is arranged in each planetary gear, and a power output end of each screwdriver bit extends out of the mounting seat.
2. The screw handling aid of claim 1 wherein the end surface of each of said power take-off ends of said screwdriver bits lie in the same plane.
3. The screw handling aid according to claim 1 or 2, wherein said mounting base has a centering ring formed thereon corresponding to said sun gear, said sun gear being rotatably connected to said centering ring;
the power input part is provided with a driving bayonet coaxial with the central gear, and a central through hole opposite to the driving bayonet is arranged in the central positioning ring.
4. The screw handling aid according to claim 3, wherein the center positioning ring is sleeved with a center bearing, the outer wall of the center positioning ring is provided with a first positioning step abutting against the upper end face of the inner ring of the center bearing, the center through hole is sleeved with a center gland, the outer wall of one end of the center gland is provided with a first flange abutting against the lower end face of the inner ring of the center bearing, the outer wall of the other end of the center gland is provided with a clamping groove, and the clamping groove is internally clamped with a clamping spring abutting against the upper end face of the center positioning ring;
the central gear is sleeved outside the central bearing and is in lap joint with the upper end face of the central bearing outer ring.
5. The screw handling aid according to claim 1 or claim 2, wherein said mounting block has formed thereon a planetary retaining ring corresponding to said planetary gear, said screwdriver bit extending through said planetary gear with a shank portion thereof extending into said planetary retaining ring and being rotatably connected to said planetary retaining ring by a planetary bearing.
6. The screw handling aid according to claim 5, wherein the inner wall of the planetary positioning ring is provided with a second positioning step abutting against the upper end surface of the outer ring of the planetary bearing, and a planetary gland is fixedly provided on the end surface of the planetary positioning ring and abuts against the lower end surface of the outer ring of the planetary bearing.
7. The screw handling aid according to claim 5, wherein the outer wall of the shank portion of the driver bit is provided with a second flange, the second flange abuts against the upper end surface of the inner ring of the planetary bearing, and the driver bit is sleeved with a sleeve connected thereto, and the sleeve abuts against the lower end surface of the inner ring of the planetary bearing.
8. The screw handling aid of claim 7 wherein said sleeve is threadably connected to an outer wall of said screwdriver bit.
9. The screw handling aid of claim 8, wherein the outer wall of the screwdriver bit is provided with a third positioning step, the upper end surface of the planetary gear abuts against the third positioning step, and the planetary gear and the sleeve are fixed by a locking screw.
10. The screw handling aid of claim 1, further comprising an end cap, wherein the end cap defines a through hole adapted to the screwdriver bit, and wherein the end cap is fixedly attached to the mounting base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111643770.4A CN114434375A (en) | 2021-12-29 | 2021-12-29 | Screw loading and unloading assistor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111643770.4A CN114434375A (en) | 2021-12-29 | 2021-12-29 | Screw loading and unloading assistor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114434375A true CN114434375A (en) | 2022-05-06 |
Family
ID=81366721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111643770.4A Pending CN114434375A (en) | 2021-12-29 | 2021-12-29 | Screw loading and unloading assistor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114434375A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2219185Y (en) * | 1995-04-20 | 1996-02-07 | 赵凯军 | Electric screwdriver |
| US20080287247A1 (en) * | 2007-05-15 | 2008-11-20 | Pusateri Daniel S | Planetary Gear Set Centering Ring |
| CN103753201A (en) * | 2014-01-24 | 2014-04-30 | 深圳市通杰精密机械自动化有限公司 | Automatic screwturningmachine |
| CN106514232A (en) * | 2016-12-26 | 2017-03-22 | 东莞市精心自动化设备科技有限公司 | Multifunctional multi-axis mechanical arm locking screw machine |
| CN107443061A (en) * | 2017-08-09 | 2017-12-08 | 浙江科技学院（浙江中德科技促进中心） | A kind of adjustable automatic locking screw machine of planetary gear multiaxis |
| CN108568661A (en) * | 2018-07-10 | 2018-09-25 | 横店集团得邦照明股份有限公司 | A kind of the multistation lock screw tooling and its implementation of mechanical transmission-type |
| CN108655719A (en) * | 2018-04-28 | 2018-10-16 | 全红英 | A kind of lock screw mechanism |
| US20200164495A1 (en) * | 2018-11-27 | 2020-05-28 | Te-Huang Wang | Torque Control Device for an Electric Screwdriver |
| CN111941054A (en) * | 2020-09-11 | 2020-11-17 | 意华控股集团有限公司 | Automatic screw locking device |
-
2021
- 2021-12-29 CN CN202111643770.4A patent/CN114434375A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2219185Y (en) * | 1995-04-20 | 1996-02-07 | 赵凯军 | Electric screwdriver |
| US20080287247A1 (en) * | 2007-05-15 | 2008-11-20 | Pusateri Daniel S | Planetary Gear Set Centering Ring |
| CN103753201A (en) * | 2014-01-24 | 2014-04-30 | 深圳市通杰精密机械自动化有限公司 | Automatic screwturningmachine |
| CN106514232A (en) * | 2016-12-26 | 2017-03-22 | 东莞市精心自动化设备科技有限公司 | Multifunctional multi-axis mechanical arm locking screw machine |
| CN107443061A (en) * | 2017-08-09 | 2017-12-08 | 浙江科技学院（浙江中德科技促进中心） | A kind of adjustable automatic locking screw machine of planetary gear multiaxis |
| CN108655719A (en) * | 2018-04-28 | 2018-10-16 | 全红英 | A kind of lock screw mechanism |
| CN108568661A (en) * | 2018-07-10 | 2018-09-25 | 横店集团得邦照明股份有限公司 | A kind of the multistation lock screw tooling and its implementation of mechanical transmission-type |
| US20200164495A1 (en) * | 2018-11-27 | 2020-05-28 | Te-Huang Wang | Torque Control Device for an Electric Screwdriver |
| CN111941054A (en) * | 2020-09-11 | 2020-11-17 | 意华控股集团有限公司 | Automatic screw locking device |
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