CN114571331A - Grinding tool with grinding wheel convenient to replace - Google Patents
Grinding tool with grinding wheel convenient to replace Download PDFInfo
- Publication number
- CN114571331A CN114571331A CN202011372487.8A CN202011372487A CN114571331A CN 114571331 A CN114571331 A CN 114571331A CN 202011372487 A CN202011372487 A CN 202011372487A CN 114571331 A CN114571331 A CN 114571331A
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- grinding wheel
- hole
- circular
- grinding
- square
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- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 11
- 238000000034 method Methods 0.000 description 8
- 229910001651 emery Inorganic materials 0.000 description 5
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 238000005498 polishing Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000013519 translation Methods 0.000 description 2
- 239000003082 abrasive agent Substances 0.000 description 1
- 239000007767 bonding agent Substances 0.000 description 1
- 244000309464 bull Species 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000007517 polishing process Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B27/00—Other grinding machines or devices
- B24B27/0076—Other grinding machines or devices grinding machines comprising two or more grinding tools
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B27/00—Other grinding machines or devices
- B24B27/0092—Grinding attachments for lathes or the like
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The invention discloses a grinding tool with a grinding wheel convenient to replace. The lifting device comprises a workbench, wherein a first lifting cylinder and a second lifting cylinder are arranged on the workbench, a first square block and a second square block are respectively arranged at the piston end of the workbench, a first circular through hole and a second circular through hole are respectively arranged on the first square block and the second square block, and the central axes of the first circular through hole and the second circular through hole are collinear and are uniformly and horizontally arranged; the rotating rod is sleeved in the first circular through hole and the second circular through hole in a matching manner; the rotating rod is provided with a plurality of grinding wheel bodies, the grinding wheel bodies are arranged at intervals along the circumferential direction of the rotating rod, and grinding wheels are arranged on the grinding wheel bodies; the rotating rod limiting device further comprises a limiting device, and the limiting device is used for limiting the rotation of the rotating rod. The grinding tool is convenient for replacing the grinding wheel, the grinding wheel on the grinding wheel body can be conveniently replaced, the construction operation of the grinding wheel body is ensured not to be interrupted for a long time, the time is saved, and the time cost is reduced.
Description
Technical Field
The invention belongs to the technical field of grinding tools, and particularly relates to a grinding tool with a grinding wheel convenient to replace.
Background
Abrasives are tools used for grinding, lapping and polishing. Most of the grinding tools are artificial grinding tools made of grinding materials and bonding agents, and also natural grinding tools directly processed by natural ore rocks are used. Grinding tools are widely used in the machinery and other metal processing industries, but also in grain processing, paper industry and the processing of non-metallic materials such as ceramics, glass, stone, plastics, rubber, wood, etc.
In the working process of the grinding tool, a grinding wheel for grinding generates a large amount of heat, so that the temperature of the grinding wheel is increased. Along with the consumption of the grinding materials on the grinding wheel, the grinding wheel needs to be replaced, and the grinding operation can be continued. And because the emery wheel self temperature after the operation is higher, can not carry out the change of emery wheel in time, can go on after the cooling of grinding apparatus, simultaneously, the in-process of changing the emery wheel also can't continue the operation of polishing, has wasted the time like this undoubtedly, has increased the time cost, brings inconvenience.
Disclosure of Invention
The invention aims to provide a grinding tool with a grinding wheel convenient to replace so as to effectively overcome the defects in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
a grinding tool convenient for replacing a grinding wheel comprises a workbench, wherein a first lifting cylinder and a second lifting cylinder are arranged on the workbench, piston ends of the first lifting cylinder and the second lifting cylinder are respectively provided with a first square block and a second square block, the first square block and the second square block are respectively provided with a first circular through hole and a second circular through hole, and central shafts of the first circular through hole and the second circular through hole are collinear and are uniformly and horizontally arranged;
the rotating rod is sleeved in the first circular through hole and the second circular through hole in a matching manner; the rotating rod is provided with a plurality of grinding wheel bodies, the grinding wheel bodies are arranged at intervals along the circumferential direction of the rotating rod, and grinding wheels are arranged on the grinding wheel bodies;
still include a stop device, stop device is used for the restriction the rotation of dwang.
Compared with the prior art, the grinding tool convenient for replacing the grinding wheel is provided with the rotating rod and the grinding wheel bodies arranged at intervals along the circumferential direction of the rotating rod, when the grinding wheel on the first grinding wheel body needs to be replaced after the first grinding wheel body is used, the rotating rod is rotated, then the second grinding wheel body is used for continuing construction operation, in the process of the second grinding wheel body construction operation, the first grinding wheel body is cooled gradually, then the grinding wheel of the first grinding wheel body can be replaced, in the replacement process, the grinding construction operation does not need to be stopped, and time waste can be avoided. The limiting device is arranged and used for fixing the rotating rod after rotation. And the first lifting cylinder and the second lifting cylinder which are arranged are used for driving the grinding wheel body to carry out grinding construction operation. The grinding tool is convenient for replacing the grinding wheel, the grinding wheel on the grinding wheel body can be conveniently replaced, the construction operation of the grinding wheel body is ensured not to be interrupted for a long time, the time is saved, and the time cost is reduced.
Further, the grinding wheel body is provided with two, and along the circumference of dwang equidistant setting is in the middle part position of dwang.
Two grinding wheel bodies are arranged one above the other, so that the grinding wheel on the grinding wheel body can be conveniently replaced while continuous construction operation is met.
Further, a first square groove is further formed in the first square block and is formed in one end, far away from the grinding wheel body, of the first circular through hole; the central axis of the first square groove is collinear with the central axis of the first circular through hole, and the side length of the cross section of the first square groove is larger than the inner diameter of the first circular through hole; and a first limiting square block is arranged at the corresponding position of the rotating rod and matched with the first square groove.
Set up the first spacing square of assorted and first square groove, when needs rotate the dwang, at first translation dwang is pulled out first spacing square from first square inslot, and later rotates the dwang 180, changes another emery wheel body, and reverse translation dwang again at last imbeds first spacing square at first square inslot, can restrict the rotation of dwang.
Further, a side of the first square groove is horizontally arranged, and a side of the first limiting block is perpendicular to the arrangement direction of the grinding wheel body.
This is injectd, can conveniently be to the pivoted location of bull stick for when first spacing square embedding is in first square inslot, the emery wheel body is in vertical state, in order to make things convenient for the operation of polishing of grinding wheel on it.
Furthermore, a through hole penetrating into the first square groove is formed in the top surface of the first square block, a cutting hole is formed in the corresponding position of the outer side wall of the first limiting block, the limiting device comprises a limiting cutting insert, and the limiting cutting insert is inserted into the through hole and the cutting hole in a matching mode.
The limiting slotting is arranged, so that the moving of the rotating rod can be limited, and the first limiting block is prevented from being separated from the first square groove.
Furthermore, the number of the insert cutting holes is two, and the insert cutting holes are arranged on two outer side walls of the first limiting block which are collinear with the arrangement direction of the grinding wheel body.
Two slotting holes are arranged so as to facilitate the fixation of the rotating rod after the rotation.
Furthermore, an L-shaped handle is arranged at the end part of the first end of the rotating rod.
An L-shaped handle is arranged to facilitate pushing, pulling and rotating the rotating rod.
Further, the second end portion of the rotating rod is provided with an anti-falling baffle.
Set up the anticreep baffle, can avoid the dwang to break away from the square piece of second.
Furthermore, a second square groove is further formed in the second square block and is formed in one end, close to the grinding wheel body, of the second circular through hole; the central axis of the second square groove is collinear with the central axis of the second circular through hole, and the side length of the cross section of the second square groove is larger than the inner diameter of the second circular through hole; a second limiting block is arranged at the corresponding position of the rotating rod and matched with the first square groove; the distance between the second square groove and the first square groove is equal to the distance between the second limiting square block and the first limiting square block.
Set up the spacing square of assorted second and the square groove of second, the multiplicable is to the fixed of dwang and spacing effect, guarantees the stability of whole device operation. When embedding first spacing square in first square inslot, the spacing square embedding of second is in second square inslot, the multiplicable restriction to the rotation of dwang.
Furthermore, a workpiece clamping position is arranged at the top of the workbench corresponding to the lower part of the grinding wheel body.
The arranged workpiece clamping position is used for clamping a workpiece to be polished.
In order that the invention may be more clearly understood, specific embodiments thereof will be described below with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a sectional view of the first limiting block embedded in the first square groove;
fig. 3 is a sectional view of the first limiting block outside the first square groove in the invention.
Wherein the reference numbers are:
10. a work table; 20. a first lifting cylinder; 30. a second lifting cylinder; 40. a first square block; 41. a first circular through hole; 42. a first square groove; 43. a through hole; 50. a second square block; 51. a second circular through hole; 52. a second square groove; 60. rotating the rod; 61. a first limit block; 611. inserting and cutting the hole; 62. a second limit block; 63. an "L" shaped handle; 64. an anti-drop baffle plate; 70. a grinding wheel body; 71. grinding a grinding wheel; 80. a limiting device; 81. limiting and slotting; 90. and clamping the workpiece.
Detailed Description
In order to overcome the defects and shortcomings of the prior art, the invention provides the grinding tool with the grinding wheel convenient to replace, and the grinding wheel 71 on the grinding wheel body 70 can be conveniently replaced.
As shown in fig. 1 to 3, a grinding tool convenient for replacing a grinding wheel includes a work table 10, a first lifting cylinder 20 and a second lifting cylinder 30 are disposed on the work table 10, cylinder ends of the first lifting cylinder 20 and the second lifting cylinder 30 are fixedly disposed at the top of the work table 10, piston ends of the first lifting cylinder 20 and the second lifting cylinder 30 are respectively provided with a first square block 40 and a second square block 50, the first square block 40 and the second square block 50 are respectively provided with a first circular through hole 41 and a second circular through hole 51, and central axes of the first circular through hole 41 and the second circular through hole 51 are collinear and are all horizontally disposed.
The device also comprises a rotating rod 60, wherein the rotating rod 60 is sleeved in the first circular through hole 41 and the second circular through hole 51 in a matching manner; the rotating rod 60 is provided with a plurality of grinding wheel bodies 70, the grinding wheel bodies 70 are arranged at intervals along the circumferential direction of the rotating rod 60, and grinding wheels 71 are arranged on the grinding wheel bodies 70. A workpiece clamping position 90 is arranged at the top of the workbench 10 and corresponds to the lower part of the grinding wheel body 70, and the workpiece clamping position is used for fixing a workpiece to be ground. In the preferred embodiment, the grinding wheel body 70 is provided in two and is provided at a middle position of the rotating lever 60 at equal intervals along the circumferential direction of the rotating lever 60.
A limiting device 80 is further included, and the limiting device 80 is used for limiting the rotation of the rotating rod 60.
Specifically, the first square block 40 is further provided with a first square groove 42, and the first square groove 42 is arranged at one end of the first circular through hole 41 far away from the grinding wheel body 70; the central axis of the first square groove 42 is collinear with the central axis of the first circular through hole 41, and the side length of the cross section of the first square groove 42 is larger than the inner diameter of the first circular through hole 41; a first limiting block 61 is arranged at the corresponding position of the rotating rod 60, and the first limiting block 61 is matched with the first square groove 42. The cross sections of the first limiting block 61 and the first square groove 42 are both square.
More specifically, one side surface of the first square groove 42 is disposed horizontally, and one side surface of the first limiting block 61 is perpendicular to the disposed direction of the grinding wheel body 70. When the grinding tool is used, the grinding wheel body 70 is in a vertical state, so that the grinding operation is convenient.
Similarly, the second square block 50 is further provided with a second square groove 52, and the second square groove 52 is arranged at one end of the second circular through hole 51 close to the grinding wheel body 70; the central axis of the second square groove 52 is collinear with the central axis of the second circular through hole 51, and the side length of the cross section of the second square groove 52 is larger than the inner diameter of the second circular through hole 51; a second limiting block 62 is arranged at a corresponding position of the rotating rod 60, and the second limiting block 62 is matched with the first square groove 42; the distance between the second square groove 52 and the first square groove 42 is equal to the distance between the second limit block 62 and the first limit block 61.
In the preferred embodiment, the first square groove 42 and the second square groove 52 have the same size and shape, and the first limiting block 61 and the second limiting block 62 have the same size and shape.
More specifically, in order to limit the movement of the rotating rod 60, a through hole 43 penetrating into the first square groove 42 is formed on the top surface of the first square block 40, an insertion hole 611 is formed at a corresponding position on the outer side wall of the first limiting block 61, and the limiting device 80 includes a limiting insertion tool 81, and the limiting insertion tool 81 is inserted into the through hole 43 and the insertion hole 611 in a matching manner.
Specifically, two insert holes 611 are provided corresponding to the number of the grinding wheel bodies 70, and are provided on two outer side walls of the first limiting block 61 that are collinear with the arrangement direction of the grinding wheel bodies 70, that is, on the upper and lower end surfaces of the first limiting block 61 as shown in fig. 2 or 3.
In order to facilitate the pushing and pulling and rotating of the rotating rod 60, an "L" shaped handle 63 is disposed at a first end of the rotating rod 60, the "L" shaped handle 63 is held by hand, the rotating rod 60 can be pushed and pulled, and the rotating rod 60 can be driven to rotate by rotating the "L" shaped handle 63.
Meanwhile, in the preferred embodiment, the second end portion of the rotating lever 60 is provided with a retaining baffle 64. The anti-slip baffle 64 is a circular plate having an outer diameter larger than the inner diameter of the second circular through hole 51 to prevent the rotating rod 60 from being disengaged from the second square block 50.
The working principle and the working process of the grinding tool convenient for replacing the grinding wheel are as follows:
the workpiece to be polished is clamped on the workpiece clamping position 90, the first grinding wheel body 70 arranged downwards runs, meanwhile, the first lifting cylinder 20 and the second lifting cylinder 30 run to drive the rotating rod 60 to move downwards, the grinding wheel body 70 on the rotating rod 60 is further driven to move downwards, and the grinding wheel 71 arranged on the grinding wheel body 70 further polishes the workpiece.
When the grinding wheel 71 on the first grinding wheel body 70 needs to be replaced, the first lifting cylinder 20 and the second lifting cylinder 30 operate to drive the rotating rod 60 and the grinding wheel body 70 thereon to move upwards, and at the same time, the first grinding wheel body 70 stops operating. The limiting slotting tool 81 is pulled out afterwards, the rotating rod 60 is horizontally translated by holding the L-shaped handle 63, the first limiting block 61 is pulled out from the first square groove 42, and the L-shaped handle 63 is rotated afterwards, so that the rotating rod 60 is rotated 180 degrees, the first grinding wheel body 70 faces upwards, and the second grinding wheel body 70 faces downwards. The rotating rod 60 is then translated in the reverse direction to insert the first limiting block 61 into the first square groove 42, and then the limiting slotting tool 81 is inserted to fix the first limiting block 61 and the first square groove 42.
Finally, the workpiece can be continuously polished by the second grinding wheel body 70, the first grinding wheel body 70 arranged upwards is gradually cooled in the polishing process, then the grinding wheel 71 on the first grinding wheel body 70 can be replaced, the polishing operation does not need to be stopped in the replacement process, and the time waste is avoided.
Compared with the prior art, the grinding tool convenient for replacing the grinding wheel is provided with the rotating rod and the grinding wheel bodies arranged at intervals along the circumferential direction of the rotating rod, when the grinding wheel on the first grinding wheel body needs to be replaced after the first grinding wheel body is used, the rotating rod is rotated, then the second grinding wheel body is used for continuing construction operation, in the process of the second grinding wheel body construction operation, the first grinding wheel body is cooled gradually, then the grinding wheel of the first grinding wheel body can be replaced, in the replacement process, the grinding construction operation does not need to be stopped, and time waste can be avoided. The grinding tool is convenient for replacing the grinding wheel, the grinding wheel on the grinding wheel body can be conveniently replaced, the construction operation of the grinding wheel body is ensured not to be interrupted for a long time, the time is saved, the time cost is reduced, and the grinding tool has certain practicability.
The above-mentioned embodiments only express one embodiment of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (10)
1. A grinding tool convenient for replacing a grinding wheel comprises a workbench (10), and is characterized in that a first lifting cylinder (20) and a second lifting cylinder (30) are arranged on the workbench (10), piston ends of the first lifting cylinder (20) and the second lifting cylinder (30) are respectively provided with a first square block (40) and a second square block (50), the first square block (40) and the second square block (50) are respectively provided with a first circular through hole (41) and a second circular through hole (51), and central shafts of the first circular through hole (41) and the second circular through hole (51) are collinear and are arranged horizontally;
the device also comprises a rotating rod (60), wherein the rotating rod (60) is sleeved in the first circular through hole (41) and the second circular through hole (51) in a matching manner; a plurality of grinding wheel bodies (70) are arranged on the rotating rod (60), the grinding wheel bodies (70) are arranged at intervals along the circumferential direction of the rotating rod (60), and grinding wheels (71) are arranged on the grinding wheel bodies (70);
the automatic rotating rod fixing device further comprises a limiting device (80), and the limiting device (80) is used for limiting the rotation of the rotating rod (60).
2. The grinding tool facilitating the replacement of the grinding wheel according to claim 1, wherein the grinding wheel body (70) is provided in two and is provided at a middle position of the rotating lever (60) at equal intervals along a circumferential direction of the rotating lever (60).
3. The grinding tool for conveniently replacing the grinding wheel according to claim 2, wherein the first square block (40) is further provided with a first square groove (42), and the first square groove (42) is arranged at one end of the first circular through hole (41) far away from the grinding wheel body (70); the central axis of the first square groove (42) is collinear with the central axis of the first circular through hole (41), and the side length of the cross section of the first square groove (42) is larger than the inner diameter of the first circular through hole (41); be provided with a first spacing square (61) on the corresponding position of dwang (60), first spacing square (61) with first square groove (42) match.
4. The grinding tool facilitating the replacement of the grinding wheel according to claim 3, wherein one side surface of the first square groove (42) is horizontally disposed, and one side surface of the first limiting block (61) is perpendicular to the disposition direction of the grinding wheel body (70).
5. The grinding tool convenient for replacing the grinding wheel according to claim 4, wherein a through hole (43) penetrating into the first square groove (42) is formed in the top surface of the first square block (40), an insert cutting hole (611) is formed in the outer side wall of the first limiting block (61) at a corresponding position, the limiting device (80) comprises a limiting insert cutting tool (81), and the limiting insert cutting tool (81) is inserted into the through hole (43) and the insert cutting hole (611) in a matching manner.
6. The grinding tool facilitating the replacement of the grinding wheel according to claim 5, wherein the insert hole (611) is provided in two and on two outer side walls of the first limit block (61) in line with the direction in which the grinding wheel body (70) is provided.
7. The grinding tool for facilitating the replacement of the grinding wheel as set forth in claim 1, wherein the first end portion of the rotating lever (60) is provided with an "L" -shaped handle (63).
8. The grinding tool for facilitating the replacement of the grinding wheel according to claim 7, wherein the second end portion of the rotating lever (60) is provided with a retaining plate (64).
9. The grinding tool of claim 3, wherein the second square block (50) is further provided with a second square groove (52), and the second square groove (52) is arranged at one end of the second circular through hole (51) close to the grinding wheel body (70); the central axis of the second square groove (52) is collinear with the central axis of the second circular through hole (51), and the side length of the cross section of the second square groove (52) is larger than the inner diameter of the second circular through hole (51); a second limiting block (62) is arranged at a corresponding position of the rotating rod (60), and the second limiting block (62) is matched with the first square groove (42); the distance between the second square groove (52) and the first square groove (42) is equal to the distance between the second limit block (62) and the first limit block (61).
10. The grinding tool of any one of claims 1 to 9, wherein a workpiece holder (90) is provided at the top of the table (10) below the grinding wheel body (70).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011372487.8A CN114571331A (en) | 2020-11-30 | 2020-11-30 | Grinding tool with grinding wheel convenient to replace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011372487.8A CN114571331A (en) | 2020-11-30 | 2020-11-30 | Grinding tool with grinding wheel convenient to replace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114571331A true CN114571331A (en) | 2022-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011372487.8A Withdrawn CN114571331A (en) | 2020-11-30 | 2020-11-30 | Grinding tool with grinding wheel convenient to replace |
Country Status (1)
| Country | Link |
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| CN (1) | CN114571331A (en) |
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| CN110883660A (en) * | 2018-09-05 | 2020-03-17 | 钱文龙 | Electronic machine processing is with two-end type electric drive grinding device |
| CN208738744U (en) * | 2018-09-30 | 2019-04-12 | 山西职业技术学院 | A kind of mobile bobbin winder device of electrical engineering cable laying |
| CN210269486U (en) * | 2019-06-11 | 2020-04-07 | 福建东南铁正工程质量检测有限公司 | Concrete abrasion resistance testing machine |
| CN210281251U (en) * | 2019-07-16 | 2020-04-10 | 无锡市正红车厢有限公司 | Manual welding turner |
| CN210756850U (en) * | 2019-09-02 | 2020-06-16 | 明峰医疗系统股份有限公司 | SiPM circuit board appearance trimming device |
| CN110814984A (en) * | 2019-11-14 | 2020-02-21 | 徐州格哩雅车业有限公司 | Support grinding device is used in electric motor car production |
| CN111113223A (en) * | 2019-12-27 | 2020-05-08 | 杨兆安 | Rounding device for silicon wafer production |
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Application publication date: 20220603 |