CN220605686U - Rotary table - Google Patents
Rotary table Download PDFInfo
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- CN220605686U CN220605686U CN202321916360.7U CN202321916360U CN220605686U CN 220605686 U CN220605686 U CN 220605686U CN 202321916360 U CN202321916360 U CN 202321916360U CN 220605686 U CN220605686 U CN 220605686U
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- fixing piece
- motor fixing
- rotary table
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- 230000005540 biological transmission Effects 0.000 claims abstract description 35
- 230000009467 reduction Effects 0.000 claims description 30
- 244000309464 bull Species 0.000 claims 6
- 230000007246 mechanism Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 3
- 230000000670 limiting effect Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The utility model discloses a rotary table, which comprises a first motor assembly, a second motor assembly, a first motor fixing piece, a second motor fixing piece, an upper shell connecting piece, an upper shell and a lower shell, wherein the upper shell is connected with the lower shell through a connecting piece; when the second motor assembly rotates, the first motor fixing piece is driven, and the first motor assembly is driven to rotate at the same time, so that the upper shell connecting piece is driven to rotate at the same time; when the first motor component rotates, the upper shell connecting piece is driven to circumferentially rotate, and the second motor component limits the rotation of the first motor fixing piece. The two sets of motor transmission mechanisms are matched with each other and do not interfere with each other, so that higher rotation speed, higher rotation resolution and higher positioning accuracy can be achieved.
Description
Technical Field
The utility model relates to the field of motor rotating systems of electric motors, in particular to a rotating table.
Background
The utility model improves the existing electric rotating system. In the prior art, in order to enable the host to spatially rotate and displace, and to avoid manual back and forth running for adjusting the angle, a motor is used to control rotation at the host support part and a remote controller or a receiver with a remote control function is used to control rotation. If a higher reduction ratio is used to ensure rotational resolution, higher rotational positioning accuracy can be achieved, but rotational speed is reduced. If a lower reduction ratio is used, a higher rotational speed can be achieved, but rotational resolution and positioning accuracy are reduced. The prior art cannot achieve both speed and precision. Therefore, the utility model introduces a second motor, one realizes higher-speed rotation and one realizes higher rotation resolution and positioning precision.
Disclosure of Invention
The utility model discloses a rotary table, wherein a first motor component is arranged on a first motor fixing piece, the first motor fixing piece is provided with a bulge and is connected with a second motor component, the second motor component is arranged on a lower shell of the rotary table, the first motor component is rotationally connected with an upper shell connecting piece, and when higher rotation resolution and positioning accuracy are required, the second motor component rotates to drive the first motor fixing piece, the first motor component and the upper shell to integrally rotate. When a higher speed rotation speed is required, the first motor assembly rotates, the second motor assembly plays a limiting role (the first motor fixing piece does not rotate) at the moment, and the upper shell rotates independently. The two sets of motor transmission mechanisms are matched with each other and do not interfere with each other, so that higher rotation speed, higher rotation resolution and higher positioning accuracy can be achieved. The specific technical scheme is as follows:
a rotary table, comprising: the motor comprises a first motor component, a second motor component, a shaft structure, a first motor fixing piece, a second motor fixing piece, an upper shell connecting piece, an upper shell and a lower shell; the first motor assembly is arranged on the first motor fixing piece; the second motor assembly is arranged on a second motor fixing piece, and the second motor fixing piece is fixed on the lower shell; a shaft structure is arranged in the middle of a cavity enclosed by the upper shell and the lower shell; the first motor fixing piece and the upper shell connecting piece are sequentially sleeved on the shaft structure, the upper shell connecting piece is positioned above the first motor fixing piece, and the first motor fixing piece and the upper shell connecting piece can respectively and independently rotate around the shaft structure; the first motor component is rotationally connected with the upper shell connecting piece; the first motor fixing piece is provided with a protruding piece which is used for being connected with the second motor assembly, the second motor assembly rotates, and the protruding piece drives the first motor fixing piece.
In addition, the technical scheme provided by the utility model can also have the following additional technical characteristics:
optionally, the first motor assembly includes:
first output shaft, worm, first transmission reduction subassembly, wherein:
the first output shaft is rotationally connected with the first transmission speed reduction assembly;
the worm is rotationally connected with the other end of the first transmission speed reduction assembly;
optionally, the second motor assembly includes:
the second output shaft, lead screw, second transmission speed reduction subassembly and nut subassembly, wherein:
the second output shaft is rotationally connected with one end of the second transmission speed reduction assembly;
the screw rod is rotationally connected with the other end of the second transmission speed reduction assembly;
the nut component is sleeved on the screw rod and can move left and right along the axial direction of the screw rod, and the protruding piece on the first motor fixing piece is inserted into the nut component.
Alternatively, the first transmission reducing assembly includes a pinion gear and a large gear, the pinion gear being engaged with the large gear, wherein the first output shaft is rotatably connected with the pinion gear, and the worm is rotatably connected with the large gear, because of high transmission efficiency and reliability of the gear.
Optionally, the second transmission reduction assembly includes a pinion and a gear wheel, the pinion and the gear wheel being meshed, wherein the second output shaft is rotatably connected with the pinion, and the screw is rotatably connected with the gear wheel, because of higher transmission efficiency and reliability of the gear wheel.
Optionally, two protruding pieces are arranged at the lower end of the nut component, and the protruding pieces on the first motor fixing piece are inserted into gaps between the two protruding pieces of the nut component, so that the first motor fixing piece is connected with the second motor component.
Optionally, the nut component is provided with a toothed through hole, and the screw rod passes through the toothed through hole to be meshed with the nut component.
Optionally, the upper shell connecting piece is annular, and the outer ring is meshed with the worm gear with a worm gear tooth shape.
Optionally, the lower housing is further provided with a main board, which controls the rotation of the first motor assembly and the second motor assembly.
After the technical scheme is adopted, compared with the prior art, the method has the following beneficial effects:
1. the rotary table according to the preferred embodiment of the patent can give consideration to higher rotation speed, higher rotation resolution and positioning accuracy.
2. According to the rotary table of the preferred embodiment of the patent, a transmission system can select a larger transmission ratio, the rotary table can realize 5 "(0.00139 degrees, the smaller the numerical value is, the more accurate), and the rotary table has higher rotary resolution and positioning accuracy than the existing like products.
3. According to the rotary table of the preferred embodiment of the patent, the other transmission system can select a smaller transmission ratio, the rotary speed of the rotary table can reach 5RPM, and the rotary speed higher than that of the current similar products is realized.
Drawings
FIG. 1 is a schematic perspective view of a rotary table according to the present utility model;
FIG. 2 is a schematic view of the structure of the inside of the rotary table according to the present utility model;
FIG. 3 is an exploded view of the first motor assembly;
FIG. 4 is an exploded view of a second motor assembly;
FIG. 5 is an exploded view showing the internal structure of the rotary table according to the present utility model;
in the figure: a lower case 100; a first motor assembly 200; a second motor assembly 300; a shaft structure 110; an upper housing rotation member 120; a first motor mount 210; a boss 220 of the first motor mount; a second motor mount 310; a first motor main body 230; a second motor main body 330; a first drive reduction assembly 250; a second drive reduction assembly 350; a worm 240; a first output shaft 270; a first sleeve 260; pinion 280; a large gear 290; a second output shaft 370; a second hub 360; a screw 340; a nut assembly 400; pinion 380; a large gear 390; a first mounting hole 211; a second mounting hole 212; a third mounting hole 213; a fourth mounting hole 311; a fifth mounting hole 312; a sixth mounting hole 313; motherboard 500.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be noted that the positional or positional relationship indicated by the terms such as "upper", "lower", "inner", "outer", "top/bottom", etc. are based on the positional or positional relationship shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "provided," "engaged/connected," "connected," etc. are to be construed broadly, as for example, "connected," either fixedly, detachably, or integrally; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Referring to one embodiment of fig. 1-4, a rotary table includes a lower housing 100, a first motor assembly 200, a second motor assembly 300, a shaft structure 110, a first motor mount 210, a second motor mount 310, and an upper housing connector 120. The first motor assembly 200 is arranged on the first motor fixing piece 210, the second motor assembly 300 is arranged on the second motor fixing piece 310, the second motor fixing piece 310 is fixed on the lower shell 100, the shaft structure 110 is arranged in the middle of a cavity surrounded by the upper shell and the lower shell, the first motor fixing piece 210 and the upper shell connecting piece 120 are sequentially sleeved on the shaft structure 110, the upper shell connecting piece 120 is positioned above the first motor fixing piece 210, and the first motor fixing piece 210 and the upper shell connecting piece 120 can respectively rotate independently around the shaft structure 110; the first motor assembly 200 is rotatably connected with the upper housing connecting member 120; the first motor fixing member 210 is provided with a protrusion member 220, which can be inserted into the second motor assembly 300, and is used for being connected with the second motor assembly 300, and when the second motor assembly 300 rotates, the protrusion member 220 drives the first motor fixing member 210.
When the second motor assembly 300 rotates, the first motor fixing member 210 is driven to rotate, and the first motor assembly 200 is driven to rotate, so that the upper housing connecting member 120 is driven to rotate simultaneously.
When the first motor assembly 200 rotates, the upper housing connecting member 120 is driven to rotate circumferentially, and the second motor assembly 300 limits the rotation of the first motor fixing member 210.
Further, the first motor assembly 200 comprises a first motor main body 230, a worm 240 and a first transmission speed reducing assembly 250, wherein the first motor main body 230 is provided with a first output shaft 270, the first motor main body 230 is fixed on the first motor fixing piece 210, and the first output shaft 270 is rotationally connected with the first transmission speed reducing assembly 250; the worm 240 is disposed parallel to the first motor main body 230, one end of the worm 240 is rotatably connected to the first motor fixing member 210, the other end of the worm 240 is rotatably connected to the first transmission reduction assembly 250, and the worm 240 is rotatably connected to the upper housing connecting member 120.
Further, the first transmission reducing assembly 250 includes a pinion 280 and a gear wheel 290, wherein the first output shaft 270 is rotatably connected to the pinion 280 through a first mounting hole 211 of the first motor fixing member 210, one end of the worm 240 is fixed to the first motor fixing member 210 through a first shaft sleeve 260 through a second mounting hole 212 of the first motor fixing member 210, the other end is rotatably connected to the gear wheel 290 through a third mounting hole 213 of the first motor fixing member 210, the second mounting hole 212 is coaxially arranged with the third mounting hole 213, and the pinion 280 and the gear wheel 290 are engaged.
Further, the second motor assembly 300 includes a second motor main body 330, a screw 340, a second motor fixture 310, a second transmission reduction assembly 350, and a nut assembly 400, wherein: the second motor main body 300 is provided with a second output shaft 370, the second motor main body 330 is fixed on the second motor fixing member 310, and the second output shaft 370 is rotationally connected with the second transmission speed reducing assembly 350. The screw 340 is parallel to the second motor main body 330, one end of the screw is rotatably connected to the second motor fixing member 310, and the other end is rotatably connected to the second transmission speed reducing assembly 350; the nut assembly 400 is sleeved on the screw 340 and can move left and right along the axial direction of the screw 340.
Further, the second transmission reducing assembly 350 includes a pinion 380 and a gear wheel 390, wherein the second output shaft 370 is rotatably connected to the pinion 380 through a fourth mounting hole 311 of the second motor fixing member 310, one end of the screw 340 is fixed to the second motor fixing member 310 through a second sleeve 360 through a fifth mounting hole 312 of the second motor fixing member 310, the other end is rotatably connected to the gear wheel 390 through a sixth mounting hole 313 of the second motor fixing member 310, the fifth mounting hole 312 is coaxially arranged with the sixth mounting hole 313, and the pinion 380 and the gear wheel 390 are engaged.
Further, two protruding members are disposed at the lower end of the nut assembly 400, and a tooth-shaped through hole is disposed inside the nut assembly 400. The protruding member 220 of the first motor fixing member 210 is inserted between the protruding members below the nut assembly 400, thereby connecting the first motor fixing member 210 with the second motor assembly 300. The nut assembly 400 is sleeved on the screw 340.
Further, the upper housing connecting member 120 has a ring shape, the outer ring of which has a worm gear shape, and the worm 240 is gear-engaged with the upper housing connecting member 120.
When the first motor main body 230 rotates, the second motor assembly 300, the main board 500 and the lower rotary table housing 100 are fixed (integrally contacted with the working surface and have friction force), the first output shaft 270 drives the pinion 280 to rotate, thereby driving the large gear 290 to rotate, and the large gear 290 drives the worm 240 to rotate, and the worm 240 is meshed with the worm wheel of the outer ring of the upper housing connecting piece 120, thereby driving the upper housing connecting piece 120 to rotate, i.e. driving the upper housing to rotate. The first motor fixing member 210 is not moved due to the limiting action of the second motor assembly 300, and only the rotation of the upper housing is achieved. The technical effect realized is as follows: when the first motor body 230 is driven, the transmission reduction ratio of the first motor assembly=30:1, wherein the large pinion reduction ratio=2: 1, the reduction ratio of the worm wheel to the worm of the outer ring of the upper shell=50:1, thus setting up that the total reduction ratio=30x2x25=1500 can be achieved, and the rotating speed of the upper shell is 7500 RPM/1500=5 RPM.
When the second motor main body 330 rotates, the pinion 380 is driven to rotate, thereby driving the large gear 390 to rotate, and when the 390 drives the screw rod 340 to rotate, the nut assembly 400 is driven to move left and right along the axial direction of the screw rod 340, the first motor fixing member 210 is driven to rotate via the protrusion member 220, the worm 240 on the first motor fixing member 210 is driven to rotate, the worm 240 gear engages with the worm wheel on the outer ring of the upper housing connecting member 120, and the upper housing connecting member 120 is pushed to rotate, i.e. the upper housing is pushed to rotate. The technical effect realized is as follows: when the second motor main body 330 is driven, the reduction ratio of the transmission reduction assembly=500:1, the reduction ratio of the big gear and the small gear=2:1, the motor main body is single-step by 1.8 degrees, and the screw rod moves by 0.5×1.8/500/2=0.0009 mm; resolution=arctan (0.0009/35) = 0.00147 ° ≡5'
Further, a main board 500 is further provided on the turntable lower case 100, which controls the rotation of the first motor assembly 200 and the second motor assembly 300.
The first motor assembly 200 and the second motor assembly 300 work independently of each other after receiving the remote control signal, and do not interfere with each other, i.e., the first motor assembly 200 and the second motor assembly 300 are "two modes (systems)" in which the electric rotating table is independent.
Referring to fig. 5, the dual motor transmission system of the present utility model may be divided into three layers from the lower housing to the upper housing:
the first layer is composed of a second motor assembly 300 (comprising a screw rod 340, a second transmission speed reduction assembly 350, a second motor fixing piece 310 and a nut assembly 400), a main board 500 and a turntable lower shell 100;
the second layer is the first motor assembly 200 (comprising worm 240, first drive reduction assembly 250, first motor mount 210);
the third layer is an upper housing connector 120 (upper housing connector with worm gear profile);
when the second motor main body 330 of the first layer rotates, the protruding part 220 of the first motor fixing part 210 drives the second layer and the third layer to integrally rotate, so that high positioning precision rotation (namely higher resolution precision and finer rotation) is realized;
the first motor main body 230 of the second layer is fixed (integrally contacts with the working surface and has friction force) when rotating, and the worm 240 pushes the third layer (the worm wheel on the upper housing connecting piece 120) to rotate, so that rapid rotation is realized. The two sets of motor transmission mechanisms are matched with each other and do not interfere with each other, so that higher rotation speed, higher rotation resolution and higher positioning accuracy can be achieved.
The rotary table disclosed by the utility model can realize the following technical effects:
when the first motor component is driven, the highest rotating speed of the rotary table can reach 5RPM;
when the second motor assembly is driven, the rotary resolution of the rotary table can reach 5 "(0.00139 DEG), and the smaller the numerical value is, the more accurate the rotary resolution is
However, in the prior art, if a single transmission system is used, the rotation speed of a single motor reaches 5RPM, and the resolution can only reach hundreds of arc seconds (arcseconds); if the resolution of a single motor reaches 5", the rotating speed is as low as 0.X RPM (a few tenths of a revolution per minute), and the resolution and the rotating speed cannot be considered.
Therefore, the two sets of motor transmission mechanisms are matched with each other and do not interfere with each other, so that higher rotation speed, higher rotation resolution and higher positioning accuracy are achieved.
It should be noted that the embodiments of the present utility model are preferred and not limited in any way, and any person skilled in the art may make use of the above-disclosed technical content to change or modify the same into equivalent effective embodiments without departing from the technical scope of the present utility model, and any modification or equivalent change and modification of the above-described embodiments according to the technical substance of the present utility model still falls within the scope of the technical scope of the present utility model.
Claims (9)
1. A rotary table, comprising: the device comprises a first motor assembly, a second motor assembly, a shaft structure, a first motor fixing piece, a second motor fixing piece, an upper shell connecting piece, an upper shell and a lower shell;
the first motor assembly is arranged on the first motor fixing piece;
the second motor assembly is arranged on the second motor fixing piece, and the second motor fixing piece is fixed on the lower shell;
the shaft structure is arranged in the middle of a cavity surrounded by the upper shell and the lower shell;
the first motor fixing piece and the upper shell connecting piece are sequentially sleeved on the shaft structure, the upper shell connecting piece is positioned above the first motor fixing piece, and the first motor fixing piece and the upper shell connecting piece can respectively and independently rotate around the shaft structure; the first motor component is rotationally connected with the upper shell connecting piece;
the first motor fixing piece is provided with a protruding piece and is used for being connected with the second motor assembly, the second motor assembly rotates, and the protruding piece drives the first motor fixing piece.
2. The rotary table of claim 1, wherein the first motor assembly comprises a first output shaft, a worm, a first drive reduction assembly, wherein:
the first output shaft is rotationally connected with one end of the first transmission speed reduction assembly;
the worm is rotationally connected with the other end of the first transmission speed reduction assembly;
the worm is rotatably connected with the upper shell connecting piece.
3. The rotary table of claim 2, wherein the second motor assembly comprises a second output shaft, a screw, a second drive reduction assembly, and a nut assembly, wherein:
the second output shaft is rotationally connected with one end of the second transmission speed reduction assembly;
the screw rod is rotationally connected with the other end of the second transmission speed reduction assembly;
the nut component is sleeved on the screw rod and can move left and right along the axial direction of the screw rod, and the protruding piece on the first motor fixing piece is inserted into the nut component.
4. The rotary table of claim 3 wherein the first drive reduction assembly includes a pinion gear and a bull gear, the pinion gear being in mesh with the bull gear, wherein the first output shaft is in rotational communication with the pinion gear and the worm is in rotational communication with the bull gear.
5. The rotary table of claim 4, wherein the second drive reduction assembly includes a pinion gear and a bull gear, the pinion gear and the bull gear being meshed, wherein the second output shaft is rotatably coupled to the pinion gear, and wherein the lead screw is rotatably coupled to the bull gear.
6. The rotary table as claimed in claim 5, wherein the nut assembly is provided at a lower end thereof with two protrusions, and the protrusions of the first motor fixture are inserted into gaps between the two protrusions of the nut assembly, so that the first motor fixture is coupled with the second motor assembly.
7. The rotary table as claimed in claim 5, wherein the nut member is provided with a toothed through hole, and the screw rod is engaged with the nut member through the toothed through hole.
8. The rotary table of claim 7 wherein the upper housing connector is annular and the outer race has a worm gear profile that meshes with the worm gear.
9. The rotary table according to any one of claims 1 to 8, wherein the lower housing is further provided with a main plate that controls rotation of the first motor assembly and the second motor assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321916360.7U CN220605686U (en) | 2023-07-20 | 2023-07-20 | Rotary table |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321916360.7U CN220605686U (en) | 2023-07-20 | 2023-07-20 | Rotary table |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220605686U true CN220605686U (en) | 2024-03-15 |
Family
ID=90173483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321916360.7U Active CN220605686U (en) | 2023-07-20 | 2023-07-20 | Rotary table |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220605686U (en) |
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2023
- 2023-07-20 CN CN202321916360.7U patent/CN220605686U/en active Active
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