CN209669419U - A kind of direct-drive type revolving cup and the revolving cup cluster control system with the direct-drive type revolving cup - Google Patents
A kind of direct-drive type revolving cup and the revolving cup cluster control system with the direct-drive type revolving cup Download PDFInfo
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- CN209669419U CN209669419U CN201920097299.5U CN201920097299U CN209669419U CN 209669419 U CN209669419 U CN 209669419U CN 201920097299 U CN201920097299 U CN 201920097299U CN 209669419 U CN209669419 U CN 209669419U
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Abstract
The utility model discloses a kind of direct-drive type revolving cups, including casing, the rotatable shaft being set in casing and it is connected with the rotating shaft revolving cup cup head, shaft is equipped with rotor, and the inner wall of casing is equipped with the stator to match with rotor, stator is for driving rotor to rotate, to drive shaft to rotate.Wherein, stator can generate magnetic field by way of connecing electricity, and rotor is to have magnetic substance, it can be rotated in the magnetic field that stator generates, rotor is installed in shaft, and rotor rotation can drive shaft to rotate, shaft is connected with revolving cup cup head, and revolving cup cup head is rotated to spin.Driving method used by the utility model is the rotation of magnetic drive shaft, has abandoned the mode that tengential belt pushes down tengential belt drive block, without other pressure in shaft, reduces the radial force of shaft, reduces the abrasion of shaft, increase the service life of shaft.The invention also discloses a kind of revolving cup cluster control system, which can individually be controlled each revolving cup.
Description
Technical field
The utility model relates to Rotor Spinning Technology fields, more specifically to a kind of direct-drive type revolving cup.In addition, this
Utility model further relates to a kind of revolving cup cluster control system including above-mentioned direct-drive type revolving cup.
Background technique
Revolving cup spinning compares RING SPINNING, all has advantage very outstanding in spinning efficiency, the degree of automation and economy,
It is a kind of very important spinning system.Wherein, the revolving cup of Revolving cup spinning and its drive system are the key that entire Revolving cup spinnings, usually
It is all driven using a tengential belt, tengential belt directly drives rotor axis, and the shaft front end of solid box is equipped with revolving cup, after shaft
End is tengential belt drive block, and tengential belt drives the rotation of rotor axis by the movement of tengential belt downwardly against drive block.
Above-mentioned driving method is to drive revolving cup to be rotated by tengential belt, and tengential belt is driven to tengential belt drive block, In
Tengential belt can push down drive block when driving, and tengential belt meeting rotor axis generates biggish pressure, so that rotor axis is generated biggish radial force, make
Rotor axis serious wear, or even damage.
In conclusion how to reduce the radial force of rotor axis, it is a problem to be solved by those skilled in the art.
Utility model content
In view of this, the direct-drive type revolving cup when in use may be used the purpose of the utility model is to provide a kind of direct-drive type revolving cup
To reduce the radial force of rotor axis.
The another object of the utility model is to provide a kind of revolving cup cluster control system including above-mentioned direct-drive type revolving cup.
To achieve the goals above, the utility model provides the following technical solutions:
A kind of direct-drive type revolving cup, including casing, rotatably be set to shaft in the casing and with the shaft
The revolving cup cup head of connection, the shaft are equipped with rotor, and the inner wall of the casing is equipped with the stator to match with the rotor,
The stator is for driving the rotor to rotate, to drive the shaft to rotate.
Preferably, the inner wall of the casing is equipped with lug boss, and the inner wall of the lug boss is equipped with outer with the shaft
Matched first radial air bearing of phase.
Preferably, the end face of the stator is equipped with the second radial air bearing to match with the periphery of the shaft.
Preferably, the casing includes casing ontology and the end cap that is installed on the casing ontology, is set in the shaft
There is a thrust button, is equipped on the inner face of the end face of the lug boss and the end cap and to match with the end face of the thrust button
Arrangement of axial air bearings, the arrangement of axial air bearings are used to limit the axial displacement of the thrust button.
Preferably, the first brake executing agency that the casing is equipped with for reducing the shaft revolving speed, described first
The first brake slot of brake actuating mechanism and the periphery of the shaft match.
Preferably, the first brake executing agency is that electromagnet brake actuating mechanism or spring mechanical are driven braking machine
Structure.
Preferably, the casing is equipped at least two first brake executing agencies, and at least two described first stop
Vehicle executing agency is symmetrical arranged about the shaft.
Preferably, casing ontology corresponding to the thrust button periphery be equipped with the second brake actuating mechanism, described second
The periphery of second brake slot and the thrust button of brake actuating mechanism matches.
A kind of revolving cup cluster control system, including complete machine host computer and the collection team control being connect with the complete machine host computer
Device processed, the communication bus of the cluster controller are equipped with the connection of at least two revolving cup controllers in parallel, the cluster
The voltage bus of controller is equipped with the pressure-wire of at least two revolving cup controllers in parallel, at least two revolving cup controls
Device processed is all connected to revolving cup device, and the revolving cup device is direct-drive type revolving cup described in above-mentioned any one.
Preferably, the communication bus is CAN bus or RS485 bus.
A kind of direct-drive type revolving cup provided by the utility model, including casing, rotatably be set to shaft in casing,
And it is connected with the rotating shaft revolving cup cup head, shaft is equipped with rotor, and the inner wall of casing is equipped with the stator to match with rotor, fixed
Son is for driving rotor to rotate, to drive shaft to rotate.
The stator of the utility model setting can generate magnetic field by way of connecing electricity, and stator matches with rotor, and fixed
Son can drive rotor to rotate, and rotor is to have magnetic substance, can be rotated in the magnetic field that stator generates, rotor installation
In in shaft, rotor rotation can drive shaft to rotate, so that drive shaft rotates, shaft is connected with revolving cup cup head, revolving cup cup head
Rotation is to spin.
Driving method used by the utility model is the rotation of magnetic drive shaft, has abandoned tengential belt and has pushed down tengential belt drive block
Mode reduce the radial force of shaft without other pressure in shaft, reduce the abrasion of shaft, increase the use of shaft
Service life.
The utility model additionally provides a kind of revolving cup cluster control system, which can individually control each revolving cup.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is the embodiments of the present invention, for those of ordinary skill in the art, without creative efforts, also
Other attached drawings can be obtained according to the attached drawing of offer.
Fig. 1 is the sectional view of direct-drive type revolving cup provided by the utility model；
Fig. 2 is the sectional view that brake actuating mechanism provided by the utility model is used to slow down to thrust button；
Fig. 3 is the schematic diagram of cluster control system provided by the utility model；
Fig. 4 is the sectional view that the second radial air bearing provided by the utility model is set on stator.
In Fig. 1-4:
1- rear end cap, 2- casing ontology, the first radial air bearing of 3-, the second arrangement of axial air bearings of 4-, 5- thrust button, 6-
First axis air bearing, 7- drive end bearing bracket, 8- revolving cup cup head, 9- iron core, 10- winding, 11- rotor, 12- shaft, 13- sealing
Lid, 14- first brake slot, 15- first brake executing agency, the brake slot of 16- second, the second brake actuating mechanism of 17-, 18- turn
Cup controller, 19- pressure-wire, 20- connection, 21- voltage bus, 22- communication bus, 23- cluster controller, in 24- complete machine
Position machine, the second radial air bearing of 25-.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
The core of the utility model is to provide a kind of direct-drive type revolving cup, which can reduce the radial direction of rotor axis
Power.
Another core of the utility model is to provide a kind of revolving cup cluster control system including above-mentioned direct-drive type revolving cup.
Fig. 1~4 is please referred to, Fig. 1 is the sectional view of direct-drive type revolving cup provided by the utility model；Fig. 2 is that this is practical new
Brake actuating mechanism provided by type is used for the sectional view to slow down to thrust button 5；Fig. 3 is collection team control provided by the utility model
The schematic diagram of system processed；Fig. 4 is the sectional view that the second radial air bearing provided by the utility model is set on stator.
A kind of direct-drive type revolving cup is connect including casing, the rotatable shaft 12 being set in casing and with shaft 12
Revolving cup cup head 8, shaft 12 is equipped with rotor 11, and the inner wall of casing is equipped with the stator to match with rotor 11, and stator is used for
Rotor 11 is driven to rotate, to drive shaft 12 to rotate.
It should be noted that casing is generally using the circular cylindrical shell with hollow space, shaft 12 is set to circular cylindrical shell
Axis on, the material of casing can be manufactured using cast iron or aluminium alloy, at low cost and be unlikely to deform, the specific shape of casing
It can be configured according to actual needs with material.
Shaft 12 is circular shaft, and using non-magnet material, shaft 12 can use the circular shaft of part hollow form, i.e., in shaft
12 are equipped with part hollow groove in the axial direction, and the section of hollow groove can be to be round or rectangular, in the bottom surface of hollow groove
It is equipped with cylindrical or cuboid rotor 11.Rotor 11 is to have magnetic substance, it is preferable that rotor 11 is rotor magnetic
Steel, rotor magnetic steel are the permanent-magnet alloy made by several metals, such as ferrite, alnico, neodymium iron boron, SmCo type permanent magnetism
Body.Alnico magnet is a kind of most ancient magnet steel, is known as natural magnet, although he is most ancient, his outstanding pair
The adaptability of high temperature, makes it so far and is still one of most important magnet steel, alnico can at a high temperature of 500 DEG C or more normal work
Make, this is the feature of his maximum, and in addition corrosion resistance is also stronger than other magnets.
Optionally, rotor 11 can be other magnets, such as the magnet being made of iron, cobalt, nickel, no matter which kind of shape be used
Formula, rotor 11 need to match hollow groove, and be fixedly connected with hollow groove, and shaft 12 can be driven to rotate when rotor 11 rotates, be anti-
Only rotor magnetic steel falls off easily, and sealing cover 13 can be arranged on the end face of hollow groove, forms hollow groove and sealing cover 13 and seals
Structure.
Stator can be made of iron core 9 and winding 10, and winding 10 is hot-wire coil, be wound in by way of spiral winding
9 periphery of iron core, iron core 9 are set on the inner wall of casing.It should be noted that stator and rotor when stator and rotor 11 is arranged
11 are aligned on the axial direction of shaft 12, and stator not made to misplace on the axial direction of shaft 12 with rotor 11.
The stator of the utility model setting can generate magnetic field by way of connecing electricity, and stator matches with rotor 11, and
Stator can drive rotor 11 to rotate, and rotor 11 is to have magnetic substance, can be rotated, be turned in the magnetic field that stator generates
Son 11 is installed in shaft 12, and the rotation of rotor 11 can drive shaft 12 to rotate, so that drive shaft 12 rotates, shaft 12 is connected with
Revolving cup cup head 8, revolving cup cup head 8 are rotated to spin.
Driving method used by the utility model is the rotation of magnetic drive shaft 12, has abandoned tengential belt and has pushed down tengential belt driving
The mode of block reduces the radial force of shaft 12, reduces the abrasion of shaft 12 without other pressure in shaft 12, increases and turns
The service life of axis 12.
The mode for directly driving revolving cup reduces transmission link, transmission efficiency height for indirect driving.This is practical
Novel to avoid the transmission link of tengential belt etc. using structure is directly driven, whole efficiency height is more energy saving.
On the basis of the above embodiments, the inner wall of casing is equipped with lug boss, and the inner wall of lug boss is equipped with and shaft 12
The first radial air bearing 3 for matching of periphery.
It should be noted that lug boss is equivalent to the bearing block of the first radial air bearing 3, to the first radial air bearing
3 play the role of supporting and fixing.First radial air bearing 3 is properly termed as the first radial air-bearing again, refers to usually
Use air or other gases as the sliding bearing of lubricant.Air viscosity for oil liquid is small, high temperature resistant, and without dirt
Dye.
In 12 high speed rotation of shaft, air can be brought into the joint place of 12 lower section and the first radial air bearing 3 of shaft,
Shaft 12 is set to float in the first radial air bearing 3, therefore, without direct between shaft 12 and the first radial air bearing 3
Contact, falls below frictional force minimum, improves efficiency.
Revolving cup running wastage can be greatly reduced using the form of air bearing.When shaft 12 is run, shaft 12 and air
It is not contacted directly between bearing, bearing friction loss is greatly reduced, and bearing friction loss is most important in revolving cup operation
Loss.Using contactless air bearing structure, bearing loss can be greatly reduced.
In another specific embodiment about radial air bearing, the end face of stator is equipped with outer with shaft 12
Matched second radial air bearing 25 of phase.
The effect of second radial air bearing 25 and the first radial air bearing 3 is consistent, only by the second diameter
On the end face for being set to stator to air bearing 25, such setting form can save the arrangement space of enclosure interior, to save
The whole space occupied of direct-drive type revolving cup.
On the basis of the above embodiments, casing includes casing ontology 2 and the end cap that is installed on casing ontology 2, shaft
12 are equipped with thrust button 5, are equipped with the axial direction to match with the end face of thrust button 5 on the end face of lug boss and the inner face of end cap
Air bearing, arrangement of axial air bearings are used to limit the axial displacement of thrust button 5.
It should be noted that the quantity of end cap is two, it is divided into drive end bearing bracket 7 and rear end cap 1, drive end bearing bracket 7 and rear end cap 1 are equal
It can be installed on by bolt on casing ontology 2, can also be installed on by other means on casing ontology 2, for example weld, only weld
The components of casing internal can not be replaced and be safeguarded after connecing end cap, so the mode being connected by screw bolts herein.
Drive end bearing bracket 7 has through-hole, so that shaft 12 can stretch out through-hole and be connected to revolving cup cup head 8,12 axis body of shaft is from logical
The part stretched out in hole is equipped with axis hole, the rear end of revolving cup cup head 8 be equipped with the matched axis of axis hole, in order to make revolving cup cup head 8 and turn
Axis 12 connects more firm, can be arranged in axis hole magnet steel allow revolving cup cup head 8 under the magnetic force with revolving cup
Cup head 8 is attracted.
The shape of thrust button 5 is matched with 2 inner wall of casing ontology, so that thrust button 5 can carry out under the drive of shaft 12
Rotation, thrust button 5 can be installed on by welding in shaft 12, so as to which phase will not occur between shaft 12 and thrust button 5
To movement.
It is equipped with the second arrangement of axial air bearings 4 in the inside of drive end bearing bracket 7, first axis air is equipped on the end face of lug boss
Bearing 6, first axis air bearing 6 and the second arrangement of axial air bearings 4 correspond respectively to two end faces of thrust button 5, in shaft
When 12 rotation, shaft 12 drives thrust button 5 to rotate, and first axis air bearing 6 is respectively used to limit with the second arrangement of axial air bearings 4
Movement of the push-plate 5 in the axial both direction of shaft 12 is prevented, so that shaft 12 reaches relatively steady state when rotating.
The present embodiment limits the axial movement of shaft 12 on the basis of the above embodiments, using air bearing, so as to turn
Axis 12 reaches relatively steady state in the axial direction, and the revolving cup for being connected to shaft 12, which can be stablized, carries out spinning work.
On the basis of the above embodiments, the first brake executing agency that casing is equipped with for reducing 12 revolving speed of shaft
15, the first brake slot 14 of first brake executing agency 15 and the periphery of shaft 12 match.
First brake executing agency 15 includes the first executing agency and the first brake slot 14 connecting with the first executing agency,
First brake executing agency 15 can be set on the corresponding casing in 12 rear end place of shaft, in order to guarantee that first brake executes machine
Structure 15 acts on the power in shaft 12 and keeps balance, it is preferable that at least two first brake executing agencies 15 are equipped on casing,
At least two first brake executing agencies 15 are symmetrical arranged about shaft 12.When being braked, at least two first brakes are held
Row mechanism 15 moves at the same time, first brake slot 14 acts in shaft 12 simultaneously, so that shaft 12 is by each direction
When the pressure of first brake slot 14, shaft 12 is allow to keep balancing, to allow shaft 12 to stablize deceleration until stopping.
Using symmetrically arranged first brake executing agency 15, when braking, can be reduced the impact to shaft 12, effectively reduce
Damage of the shaft 12 to air bearing.
First brake executing agency 15 can be driven braking mechanism using electromagnet brake actuating mechanism or spring mechanical, this
The brake actuating mechanism of two kinds of forms have it is compact-sized, it is easy to operate, respond it is sensitive, the service life is permanent, using it is reliable the features such as,
And command range is required lower, it is easy to accomplish far distance control.
Shaft 12 can be made to stop in the short period when needing to brake shaft 12 using brake actuating mechanism,
The working condition of revolving cup cup head 8 can be adjusted at any time.
In addition to above-mentioned set-up mode, the second brake of setting can also hold on the casing ontology 2 corresponding to 5 periphery of thrust button
Row mechanism 17, the second brake slot 16 of the second brake actuating mechanism 17 and the periphery of thrust button 5 match.So that the second brake slot
16 can brake the periphery of thrust button 5, since the outer diameter of thrust button 5 is greater than the outer diameter of shaft 12, so, the second brake
The thrust button 5 of the contact of slot 16 is relatively large in diameter, and braking effect is more preferable.Meanwhile by the space using thrust button 5, so that whole
The axial distance of body structure is shorter, and structure is more compact.
In addition to above-mentioned direct-drive type revolving cup, it includes direct-drive type revolving cup disclosed in above-described embodiment that the utility model, which also provides a kind of,
Revolving cup cluster control system, including complete machine host computer 24 and the cluster controller being connect with complete machine host computer 24 23, cluster
The communication bus 22 of controller 23 is equipped with the connection 20 of at least two revolving cup controllers 18 in parallel, cluster controller 23
Voltage bus 21 is equipped with the pressure-wire 19 of at least two revolving cup controllers 18 in parallel, and at least two revolving cup controllers 18 connect
It is connected to revolving cup device, revolving cup device is direct-drive type revolving cup disclosed in above-mentioned any one embodiment.
It should be noted that complete machine host computer 24 be with can operating function machine, such as have display screen and operation
The machine of button, or can be configured according to actual needs using the machine equipped with touch screen, specific setting form.
By operating complete machine host computer 24, instruction can be assigned to cluster controller 23, cluster controller 23 is obtaining phase
Corresponding movement is executed after the instruction answered, for example, the start-stop button of the display of complete machine host computer 24, cluster controller 23 can be operated
Revolving cup controller 18 is controlled after being instructed accordingly, each revolving cup controller 18 after being instructed to direct driving rotary accordingly
Cup is powered or is powered off, so that direct-drive type revolving cup works or stops working.
Specifically, cluster controller 23 can control each revolving cup controller 18, it, can be right when assigning instruction
Each revolving cup controller 18 individually assigns instruction, i.e., by operation complete machine host computer 24, can to each revolving cup controller 18 into
Row control, individually to manipulate revolving speed and the start and stop of each revolving cup cup head 8.
Revolving cup controller 18 can not only drive revolving cup, can also realize the accurate measurement and feedback of rotational speed of rotor, letter
It is single convenient.
Voltage bus 21 can use 36V pressure-wire or 48V pressure-wire.The selection of voltage bus 21 can also be according to practical need
It asks and is set, communication bus 22 can use CAN bus or RS485 bus.
Data communication strong real-time between CAN bus and each node of RS485 bus network, strong antijamming capability, and
And the advantages that sensitivity with higher, certainly, the selection of communication bus 22 is not limited to above two form, specific choice
It can be set according to actual needs.
Refer to the prior art for the structure of other each sections of the revolving cup cluster control system, and repeats no more herein.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
Direct-drive type revolving cup provided by the utility model and revolving cup cluster control system are described in detail above.This
It applies specific case in text to be expounded the principles of the present invention and embodiment, the explanation of above embodiments is
It is used to help understand the method and its core concept of the utility model.It should be pointed out that for the ordinary skill people of the art
For member, without departing from the principle of this utility model, several improvements and modifications can be made to this utility model, this
A little improvement and modification are also fallen into the protection scope of the utility model claims.
Claims (10)
1. a kind of direct-drive type revolving cup, which is characterized in that including casing, rotatably be set to the shaft (12) in the casing with
And the revolving cup cup head (8) connecting with the shaft (12), the shaft (12) are equipped with rotor (11), on the inner wall of the casing
Equipped with the stator to match with the rotor (11), the stator is for driving the rotor (11) to rotate, to drive described turn
Axis (12) rotation.
2. direct-drive type revolving cup according to claim 1, which is characterized in that the inner wall of the casing is equipped with lug boss, described
The inner wall of lug boss is equipped with the first radial air bearing (3) to match with the periphery of the shaft (12).
3. direct-drive type revolving cup according to claim 1, which is characterized in that the end face of the stator is equipped with and the shaft
(12) the second radial air bearing (25) that periphery matches.
4. direct-drive type revolving cup according to claim 2, which is characterized in that the casing includes casing ontology (2) and installation
End cap on the casing ontology (2), the shaft (12) be equipped with thrust button (5), the end face of the lug boss with it is described
The arrangement of axial air bearings to match with the end face of the thrust button (5), the axial air axis are equipped on the inner face of end cap
Hold the axial displacement for limiting the thrust button (5).
5. direct-drive type revolving cup according to any one of claims 1 to 4, which is characterized in that the casing is equipped with and is used for
Reduce the first brake executing agency (15) of the shaft (12) revolving speed, the first brake of the first brake executing agency (15)
Slot (14) and the periphery of the shaft (12) match.
6. direct-drive type revolving cup according to claim 5, which is characterized in that the first brake executing agency (15) is electromagnetism
Iron brake actuating mechanism or spring mechanical are driven braking mechanism.
7. direct-drive type revolving cup according to claim 6, which is characterized in that the casing is equipped at least two described first
Brake actuating mechanism (15), at least two first brake executing agencies (15) are symmetrical arranged about the shaft (12).
8. direct-drive type revolving cup according to claim 4, which is characterized in that casing corresponding to thrust button (5) periphery
Ontology (2) be equipped with the second brake actuating mechanism (17), second brake actuating mechanism (17) second brake slot (16) with
The periphery of the thrust button (5) matches.
9. a kind of revolving cup cluster control system, which is characterized in that including complete machine host computer (24) and with the complete machine host computer
(24) cluster controller (23) connected, the communication bus (22) of the cluster controller (23) are equipped at least two parallel connections
The connection (20) of revolving cup controller (18), it is in parallel that the voltage bus (21) of the cluster controller (23) is equipped at least two
The revolving cup controller (18) pressure-wire (19), at least two revolving cup controllers (18) are all connected to revolving cup device,
The revolving cup device is direct-drive type revolving cup described in claim 1 to 7 any one.
10. revolving cup cluster control system according to claim 9, which is characterized in that the communication bus (22) is that CAN is total
Line or RS485 bus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920097299.5U CN209669419U (en) | 2019-01-21 | 2019-01-21 | A kind of direct-drive type revolving cup and the revolving cup cluster control system with the direct-drive type revolving cup |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920097299.5U CN209669419U (en) | 2019-01-21 | 2019-01-21 | A kind of direct-drive type revolving cup and the revolving cup cluster control system with the direct-drive type revolving cup |
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| Publication Number | Publication Date |
|---|---|
| CN209669419U true CN209669419U (en) | 2019-11-22 |
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| CN201920097299.5U Active CN209669419U (en) | 2019-01-21 | 2019-01-21 | A kind of direct-drive type revolving cup and the revolving cup cluster control system with the direct-drive type revolving cup |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109554785A (en) * | 2019-01-21 | 2019-04-02 | 杭州三相科技有限公司 | A kind of direct-drive type revolving cup and the revolving cup cluster control system with the direct-drive type revolving cup |
-
2019
- 2019-01-21 CN CN201920097299.5U patent/CN209669419U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109554785A (en) * | 2019-01-21 | 2019-04-02 | 杭州三相科技有限公司 | A kind of direct-drive type revolving cup and the revolving cup cluster control system with the direct-drive type revolving cup |
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