CN109014877A - One kind discarded bolt and nut detachment device for building and application method - Google Patents
One kind discarded bolt and nut detachment device for building and application method Download PDFInfo
- Publication number
- CN109014877A CN109014877A CN201810947054.7A CN201810947054A CN109014877A CN 109014877 A CN109014877 A CN 109014877A CN 201810947054 A CN201810947054 A CN 201810947054A CN 109014877 A CN109014877 A CN 109014877A
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- Prior art keywords
- bolt
- nut
- rotating cylinder
- pedestal
- detachment device
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Links
- 238000000034 method Methods 0.000 title claims abstract description 10
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 39
- 238000005194 fractionation Methods 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 5
- 239000007937 lozenge Substances 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000002040 relaxant effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
- B23P19/06—Screw or nut setting or loosening machines
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing Of Solid Wastes (AREA)
- Automatic Assembly (AREA)
Abstract
The invention discloses a kind of discarded bolt and nut detachment device for building and application methods, detachment device includes: pedestal, rotating cylinder, dismount head and clamp system, the socket for placing stud base is offered on the pedestal, the rotating cylinder is rotatably installed on the pedestal, and it can be moved up and down relative to the pedestal, the dismounting head is directly or indirectly fixedly connected on the rotating cylinder, the dismounting head has the plug for adapting to bolt head shape, the clamp system is installed on the pedestal and can make reversed with moving up and down for rotating cylinder or move toward one another, with release or binding nut.Structure of the invention is reasonable, and layout is ingenious, and the cooperation of exquisite position and connection relationship, can make bolt and nut efficient separating between each component.
Description
Technical field
The present invention relates to technical field of tools, specially a kind of discarded bolt and nut detachment device for building and user
Method.
Background technique
Traditional building uses a large amount of bolts, in work process, there is the screw bolt and nut screw thread of quite a few discarding
It links together, causes a large amount of waste, people, which are typically required, to be combined together and will be collected into spanner and other tools
This bolt and nut split, so that recycling uses, reduce waste, but this mode efficiency is very low, and worker
Hardly possible is recruited, and large labor intensity can not increase wage again with owner under low, market situation is taken in addition, and low wages employee does not go for,
In a kind of dilemma, it is therefore desirable to which a kind of device improves working efficiency.
Summary of the invention
In view of the above problems, the present invention provides a kind of discarded bolt and nut detachment device for building and application method, knot
Structure is simply ingenious, and setting rationally, splits bolt and nut conveniently, can effectively solve the problems in background technique.
To achieve the above object, the invention provides the following technical scheme:
A kind of discarded bolt and nut detachment device for building, comprising: pedestal, rotating cylinder, dismounting head and clamp system, the bottom
The socket for placing stud base is offered on seat, the rotating cylinder is rotatably installed on the pedestal, and can be relative to
The pedestal moves up and down, and the dismounting head is directly or indirectly fixedly connected on the rotating cylinder, and the dismounting head has adaptation
In the plug of bolt head shape, the clamp system is installed on the pedestal and can make with moving up and down for rotating cylinder reversed
Or move toward one another, with release or binding nut.
By using above-mentioned technical proposal, the fractionation of bolt and nut is simple and efficient, and is greatly improved it and is split efficiency, and grasps
Make convenient and reliable, rotating cylinder therein can make clamp system binding nut during downward push and rotation, and can make plug
Bolt head is docked, and bolt is driven to rotate, so that bolt and nut separates, controllability is strong.
As a preferred technical solution of the present invention, the clamp system includes wedge block and clamping plate, under the rotating cylinder
Holding has the matched tapered end of lozenges with the wedge block, and the clamping plate connects the wedge block, the clamping plate have with
The matched medial surface of nut side view.By using above-mentioned technical proposal, during rotating cylinder moves down, clamping can be driven
Mechanism moves towards, with binding nut, the setting of wedge block and clamping plate convenient for being clamped to nut, meanwhile, clamping plate can also be with
It is removably attached on wedge block, to replace clamping plate, matches the nut of different size.
As a preferred technical solution of the present invention, the clamp system is connected with resetting apparatus, the resetting apparatus
It is set on pedestal.By using above-mentioned technical proposal, the reset of resetting apparatus being provided with conducive to clamp system is convenient for
The bolt and nut of next round splits work.
As a preferred technical solution of the present invention, the resetting apparatus includes position limiting slide block and reset spring, described
Position limiting slide block is movably installed on pedestal, and position limiting slide block is fixedly connected with the clamp system, reset spring one end connection limit
Position sliding block, the other end are connected to pedestal.By using above-mentioned technical proposal, the setting of reset spring and position limiting slide block is conducive to
Reset clamp system, the spring for pressure spring or tension spring or other forms can be set as needed in spring, require to reach to reset.
As a preferred technical solution of the present invention, the outer wall of rotating cylinder is fixed with sliding block, offers on pedestal and sliding block
The spiral chute to match.By using above-mentioned technical proposal, sliding block can be slided along spiral chute, and then rotating cylinder is moving down
During rotate, i.e., drive plug rotation, to drive bolt head to rotate, separate bolt and nut.
As a preferred technical solution of the present invention, connecting plate is installed at the top of rotating cylinder, dismounting head is fixed on connection
Plate lower surface.By using above-mentioned technical proposal, being provided with conducive to integrally-built stabilization for connecting plate is also beneficial to press.
As a preferred technical solution of the present invention, the upper surface of connecting plate is equipped with hand pressure pad.By using upper
Technical solution is stated, the setting of hand pressure pad can guarantee the comfort level of pressing to a certain extent, be conducive to press.
As a preferred technical solution of the present invention, the dismounting head further includes fixed cylinder and connecting rod, the connection
Bar is removably attachable to fixed cylinder, and the connecting rod connects the plug or is integrally formed with the plug.By using upper
Technical solution is stated, the setting of fixed cylinder and connecting rod is conducive to the disassembling, assembling and replacing of plug, to cope with the bolt of different size, just
In separation bolt and nut.
As a preferred technical solution of the present invention, the extension for moving up and down and rotating for rotating cylinder is offered on pedestal
Slot.By using above-mentioned technical proposal, the setting of extension slot is more smoothly during rotating cylinder can be made to move down and rotate
Steadily, convenient for reliable fractionation bolt and nut, meanwhile, spiral chute may be disposed in extension slot, make rotating cylinder in the mistake moved down
Cheng Zhong rotates, and has mark that can follow, stability and high efficiency.
A kind of discarded bolt and nut detachment device application method for building, using one described in any of the above-described technical solution
The step of kind discarded bolt and nut detachment device for building, fractionation bolt and nut, is as follows:
A. the lower end of the bolt in nuts and bolt to be split is inserted into socket, presses down on rotating cylinder, makes rotating cylinder
It moves down；
B. rotating cylinder drives clamp system to move toward one another, clamp system binding nut；
C. downward push and revolving drum, the plug dismounted on head docks bolt head, and bolt is driven to rotate, and makes bolt
It produces relative rotation with nut, to separate bolts and nuts.By using above-mentioned technical proposal, bolt and nut splits simple high
Effect during rotating cylinder moves down, can be rotated, so that bolt and nut is split, it is easy-to-use.
Compared with prior art, it the beneficial effects of the present invention are: structure is not lost simply ingenious, flexibly and easily manipulates, passes through
Pressing and rotation rotating cylinder, i.e., removable bolt and nut, the efficient separating of bolt and nut can use manpower and material resources sparingly, easy to promote and utilize.
Detailed description of the invention
Fig. 1 is the cross-sectional view of front view of the present invention；
Fig. 2 is the cross-sectional view of A-A of the present invention；
Fig. 3 is the cross-sectional view of another embodiment of the present invention front view.
In figure: pedestal 1, extension slot 2, plug 3, cavity 4, socket 5, position limiting slide block 6, wedge block 7, reset spring 8, clamping plate
9, connecting plate 10, rotating cylinder 11, connecting rod 12, hand pressure pad 13, fixed cylinder 14, sliding block 15, spiral chute 16.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Embodiment 1
Please refer to Fig. 1 to Fig. 2, a kind of discarded bolt and nut detachment device for building, comprising: pedestal 1, rotating cylinder 11, dismounting
Head and clamp system offer the socket 5 for placing stud base on pedestal 1, and socket 5 is connected to the cavity 4 in pedestal 1, turn
Cylinder 11 is rotatably installed on pedestal 1, and can be moved up and down relative to pedestal 1, and dismounting head is directly or indirectly fixedly connected on
On rotating cylinder 11, dismounting head has the plug 3 for adapting to bolt head shape, and clamp system is installed on pedestal 1 and can be with rotating cylinder
11 move up and down and make reversed or move toward one another, to unclamp or binding nut.Specifically, plug 3, which is removably connected to, tears open
It fills on head, to match the bolt of different size.
Clamp system includes wedge block 7 and clamping plate 9, and 11 lower end of rotating cylinder has the matched wedge shape of lozenges with wedge block 7
End, clamping plate 9 connect wedge block 7, and clamping plate 9 has and the matched medial surface of nut side view.Clamp system is connected with reset dress
It sets, resetting apparatus includes position limiting slide block 6 and reset spring 8, and position limiting slide block 6 is movably installed on pedestal 1, specifically, in pedestal 1
On offer the sliding slot mobile for position limiting slide block 6, position limiting slide block 6 is fixedly connected with clamp system, i.e. position limiting slide block 6 can be fixedly connected
Wedge block 7 is fixedly connected with clamping plate 9, or is integrally formed with wedge block 7 or clamping plate 9, and reset spring is also in sliding slot, resets bullet
8 one end of spring connects position limiting slide block 6, and the other end is connected to pedestal 1.
The outer wall of rotating cylinder 11 is fixed with sliding block 15, and the spiral chute 16 to match with sliding block 15 is offered on pedestal 1.Specifically
For, referring to Fig. 1, being fixed with sliding block 15 with 11 lower end outside surface of inclined-plane, that is, tapered end rotating cylinder, offered on pedestal 1
The extension slot 2 for moving up and down and rotating for rotating cylinder 11 offers the spiral chute to match with sliding block 15 on the inner wall of extension slot 2
16。
The top of rotating cylinder 11 is equipped with connecting plate 10, and dismounting head is fixed on 10 lower surface of connecting plate.The upper table of connecting plate 10
Face is equipped with hand pressure pad 13.Hand pressure pad 13 can be made of gas cell, rubber block or sponge block, relaxing when promoting hand pressing
Appropriateness.
Dismounting head further includes fixed cylinder 14 and connecting rod 12, and connecting rod 12 is removably attachable to fixed cylinder 14, connecting rod
12 connection plugs 3 are integrally formed with plug 3, in the present embodiment, please refer to Fig. 1 and Fig. 2, bolt head has six in one
Angle, plug 3 are matched with the interior hexagonal.
In example 2, referring to Fig. 3, being outer-hexagonal shape for bolt head, plug 3 can be adapted for having therewith
There is the plug of hexagonal in one, to complete the separation of bolt and nut.With in embodiment 1, connecting rod 12 is detachably connected a fixed cylinder
14, connecting rod 12 can be integrally formed with plug 3.
Working principle: when carrying out nuts and bolt fractionation, nuts and bolt to be split first is placed on bottom by such as Fig. 1
The upper surface of seat 1, and it is inserted into the lower end of bolt in socket 5, nut is located between two clamping plates 9 at this time, and clamping plate 9 is set as
Shape in Fig. 2 can more preferably clamp nut.
After placing screw bolt and nut to be split, by the opposite extension of 12 notch of connecting rod with bevelled rotating cylinder 11
Slot 2 is put, and enables the rotating cylinder 11 with the i.e. tapered end in inclined-plane is vertical to move down, and after placement finishes, presses down on hand
Portion's pressure pad 13, after pressing, connecting plate 10 can pressed against and moved down, and pass through the inclined-plane with bevelled 11 bottom of rotating cylinder and wedge shape
Inclined-plane cooperation between block 7 so that clamping plate 9 be pushed to move towards, and then is clamped and is placed so that two wedge blocks 7 move toward one another
Nut between two clamping plates 9.
The position of screw bolt and nut has been fixed at this time, and with connecting plate 10 is persistently pressed downward, connecting plate 10 will continue
It moves down, will also continue to move down with bevelled rotating cylinder 11, but the position of wedge block 7 will no longer change, and wedge block 7
Be staggered 11 position of rotating cylinder, so that the continuation of rotating cylinder 11 can move down, the bevelled rotating cylinder 11 of ribbon supply is offered on pedestal 1 and is protruded into
Extension slot 2, during this, fixed cylinder 14 will move closer to the upper end of bolt with the plug 3 that gas bottom is installed, and be finally inserted into
It, can be right by the grafting between connecting rod 12 and fixed cylinder 14 into the compatible slot in bolt upper end (such as Fig. 1,2 are six square grooves)
Plug 3 is replaced, and to adapt to different bolts, is inserted into the slot of bolt to plug 3, rotation with bevelled rotating cylinder 11, with
Rotation fixed cylinder 14 can with 3 rotary action of plug on bolt, drive bolt rotation, since nut is at this time by clamping plate 9
It clamps, lasting rotation is with just capable of separating screw bolt and nut after bevelled rotating cylinder 11.
After being persistently pressed downward with bevelled rotating cylinder 11, sliding block 15 can be embedded into spiral chute 16, press downwards at this time
Pressure hand pressure pad 13 enable to bevelled rotating cylinder 11 rotate so that clamping plate 9 cooperate plug 3 by nuts and bolt it
Between separate, it is laborsaving and conveniently.Meanwhile when connecting between nuts and bolt too closely causes to turn motionless, hand hammer pair can be passed through
Connecting plate 10 continuously and quickly tap, to generate certain vibration so that connection nuts and bolt too closely it
Between relax, it is easy to use to dismantle.
To sum up, the present invention is used for the fractionation of screw bolt and nut, and easy to operate, quickly and efficiently, structure is simple, manufacturing cost
It is low, easily promote.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (10)
1. a kind of discarded bolt and nut detachment device for building characterized by comprising pedestal (1), rotating cylinder (11), dismounting head
And clamp system, the socket (5) for placing bolt lower end is offered on the pedestal (1), the rotating cylinder (11) is rotationally
It is installed on the pedestal (1), and can be moved up and down relative to the pedestal (1), the dismounting head is directly or indirectly fixed to be connected
It is connected on the rotating cylinder (11), the dismounting head has the plug (3) for adapting to bolt head shape, the clamp system installation
In can make on the pedestal (1) and with moving up and down for rotating cylinder (11) reversed or move toward one another, to unclamp or binding nut.
2. one kind discarded bolt and nut detachment device for building according to claim 1, which is characterized in that the clamping machine
Structure includes wedge block (7) and clamping plate (9), and rotating cylinder (11) lower end has the matched wedge of lozenges with the wedge block (7)
Shape end, the clamping plate (9) are fixedly connected the wedge block (7), and the clamping plate (9) has and the matched inside of nut side view
Face.
3. one kind discarded bolt and nut detachment device for building according to claim 1 or 2, which is characterized in that the folder
Tight mechanism is connected with resetting apparatus, and the resetting apparatus is set on pedestal (1).
4. one kind discarded bolt and nut detachment device for building according to claim 3, which is characterized in that the reset dress
It sets including position limiting slide block (6) and reset spring (8), the position limiting slide block (6) is movably installed on pedestal (1), position limiting slide block (6)
It is fixedly connected with the clamp system, described reset spring (8) one end connects position limiting slide block (6), and the other end is connected to pedestal (1).
5. one kind discarded bolt and nut detachment device for building according to claim 1 or 2 or 4, which is characterized in that pedestal
(1) extension slot (2) for moving up and down and rotating for rotating cylinder (11) is offered on.
6. one kind discarded bolt and nut detachment device for building according to claim 1 or 2 or 4, which is characterized in that rotating cylinder
(11) it is equipped at the top of connecting plate (10), dismounting head is fixed on connecting plate (10) lower surface.
7. one kind discarded bolt and nut detachment device for building according to claim 6, which is characterized in that connecting plate (10)
Upper surface hand pressure pad (13) are installed.
8. the discarded bolt and nut detachment device for building of one kind described according to claim 1 or 2 or 4 or 7, which is characterized in that
The dismounting head further includes fixed cylinder (14) and connecting rod (12), and the connecting rod (12) is removably attachable to fixed cylinder
(14), the connecting rod (12) connects the plug (3) or is integrally formed with the plug (3).
9. one kind discarded bolt and nut detachment device for building according to claim 5, which is characterized in that rotating cylinder (11)
Outer wall is fixed with sliding block (15), offers the spiral chute (16) to match with sliding block (15) on pedestal (1) in extension slot (2).
10. a kind of discarded bolt and nut detachment device application method for building, which is characterized in that appointed using such as claim 1-9
The step of discarded bolt and nut detachment device for building of one kind described in one, fractionation bolt and nut, is as follows:
A. the lower end of the bolt in nuts and bolt to be split is inserted into socket (5), is pressed down on rotating cylinder (11), make to turn
Cylinder (11) moves down；
B. rotating cylinder (11) drives clamp system to move toward one another, clamp system binding nut；
C. pressing down on rotates rotating cylinder (11), and the plug (3) dismounted on head docks bolt head, and bolt is driven to rotate, and makes
Screw bolt and nut produces relative rotation, to separate bolts and nuts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810947054.7A CN109014877B (en) | 2018-08-20 | 2018-08-20 | Device for splitting waste bolt and nut for building and using method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810947054.7A CN109014877B (en) | 2018-08-20 | 2018-08-20 | Device for splitting waste bolt and nut for building and using method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109014877A true CN109014877A (en) | 2018-12-18 |
| CN109014877B CN109014877B (en) | 2021-02-23 |
Family
ID=64631417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810947054.7A Active CN109014877B (en) | 2018-08-20 | 2018-08-20 | Device for splitting waste bolt and nut for building and using method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109014877B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110142722A (en) * | 2019-05-27 | 2019-08-20 | 安徽黎搏装饰工程有限公司 | A kind of construction nut remover |
| CN110319397A (en) * | 2019-07-15 | 2019-10-11 | 杭州量大互联科技有限公司 | Based on the market of big data Christmas tree LED matrix lamp and its application method |
| CN111230807A (en) * | 2020-02-21 | 2020-06-05 | 中建一局集团安装工程有限公司 | Nut tool |
| CN111963768A (en) * | 2020-08-13 | 2020-11-20 | 苏州颐和精密机械有限公司 | Clamp device for petroleum conveying pipeline |
| CN112338862A (en) * | 2020-11-20 | 2021-02-09 | 蔡志茏 | Glass drinking cup protective sheath erection equipment |
| CN112571374A (en) * | 2020-11-25 | 2021-03-30 | 邱华英 | Push type assembly corner nut equipment |
| CN114700709A (en) * | 2022-04-23 | 2022-07-05 | 安徽旭虹电子科技有限公司 | Electronic atomizer splitting equipment |
| CN114952263A (en) * | 2022-06-07 | 2022-08-30 | 新疆理工学院 | Mechanical automatic feeding and discharging mechanical device |
| CN115302332A (en) * | 2022-08-19 | 2022-11-08 | 马文秀 | Adjustable polishing device and polishing method for bearing machining |
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| CN206435960U (en) * | 2016-12-26 | 2017-08-25 | 格林美（天津）城市矿产循环产业发展有限公司 | A kind of waste and old screw disassembling apparatus of abandoned car |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110142722B (en) * | 2019-05-27 | 2020-10-27 | 明光市众建市政工程有限公司 | Nut dismounting device for construction |
| CN110142722A (en) * | 2019-05-27 | 2019-08-20 | 安徽黎搏装饰工程有限公司 | A kind of construction nut remover |
| CN110319397A (en) * | 2019-07-15 | 2019-10-11 | 杭州量大互联科技有限公司 | Based on the market of big data Christmas tree LED matrix lamp and its application method |
| CN111230807B (en) * | 2020-02-21 | 2023-08-22 | 中建一局集团安装工程有限公司 | Nut tool |
| CN111230807A (en) * | 2020-02-21 | 2020-06-05 | 中建一局集团安装工程有限公司 | Nut tool |
| CN111963768A (en) * | 2020-08-13 | 2020-11-20 | 苏州颐和精密机械有限公司 | Clamp device for petroleum conveying pipeline |
| CN112338862A (en) * | 2020-11-20 | 2021-02-09 | 蔡志茏 | Glass drinking cup protective sheath erection equipment |
| CN112571374A (en) * | 2020-11-25 | 2021-03-30 | 邱华英 | Push type assembly corner nut equipment |
| CN114700709A (en) * | 2022-04-23 | 2022-07-05 | 安徽旭虹电子科技有限公司 | Electronic atomizer splitting equipment |
| CN114952263A (en) * | 2022-06-07 | 2022-08-30 | 新疆理工学院 | Mechanical automatic feeding and discharging mechanical device |
| CN114952263B (en) * | 2022-06-07 | 2024-04-05 | 新疆理工学院 | Mechanical automatic feeding and discharging mechanical device |
| CN115302332A (en) * | 2022-08-19 | 2022-11-08 | 马文秀 | Adjustable polishing device and polishing method for bearing machining |
| CN115302332B (en) * | 2022-08-19 | 2023-10-24 | 东莞市业晟石墨科技有限公司 | Adjustable polishing device and polishing method for bearing machining |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109014877B (en) | 2021-02-23 |
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