CN111168415A - Large-scale direct-drive numerical control turntable - Google Patents
Large-scale direct-drive numerical control turntable Download PDFInfo
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- CN111168415A CN111168415A CN202010061456.4A CN202010061456A CN111168415A CN 111168415 A CN111168415 A CN 111168415A CN 202010061456 A CN202010061456 A CN 202010061456A CN 111168415 A CN111168415 A CN 111168415A
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- 230000005611 electricity Effects 0.000 claims description 2
- 238000005299 abrasion Methods 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 4
- 230000007246 mechanism Effects 0.000 description 9
- 238000003801 milling Methods 0.000 description 7
- 238000007514 turning Methods 0.000 description 7
- 230000009347 mechanical transmission Effects 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 5
- 239000002131 composite material Substances 0.000 description 5
- 230000006872 improvement Effects 0.000 description 4
- 238000003754 machining Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/25—Movable or adjustable work or tool supports
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Abstract
The invention discloses a large direct-drive numerical control rotary table which comprises a workbench and a rotary table body, wherein a torque motor is arranged in the rotary table body and comprises a torque motor stator and a torque motor rotor, the torque motor stator is fixedly connected with the rotary table body, and the torque motor rotor is fixedly connected with the workbench so as to realize the rotary motion of the direct-drive workbench relative to the rotary table body when the torque motor is powered. The large direct-drive numerical control turntable directly drives the workbench to rotate by adopting the direct-drive torque motor, has the characteristics of large bearing capacity, large torsion and high precision, and simplifies the mechanical structure; the torque motor has the advantages of super-long service life, extremely low abrasion, great energy and material saving, and higher energy-saving and environment-friendly performance.
Description
Technical Field
The invention relates to the technical field of processing machines, in particular to a large direct-drive numerical control turntable.
Background
The working turntable is an important functional part of a machining center, and the rotary motion of the working turntable is linked with other linear shafts, so that various complex curved surfaces or special-shaped parts can be machined.
The numerical control direct-drive turning and milling composite rotary table is the most ideal and important functional part of a composite processing machine tool, the numerical control direct-drive turning and milling composite rotary table in the prior art is controlled by a servo control system, a single servo motor and a double servo motor are adopted to drive the table through one set or a plurality of sets of speed reducers with multi-stage gears, gear rings or other modes, the defects of complex mechanical transmission mechanism, small bearing, low efficiency and high noise exist, the requirements on equipment of processing, heat treatment and assembly processes of transmission parts are high, the abrasion is easy, the maintenance is difficult, the requirements on the electrical control technology are high, and the dynamic response capability of the numerical control direct-drive turning and milling composite rotary table needs high power and large inertia servo motors to be improved.
Therefore, how to provide a large direct-drive numerical control turntable with simplified mechanical structure, large bearing capacity, large torsion and high precision is a technical problem that needs to be solved urgently by those skilled in the art.
Disclosure of Invention
The invention aims to provide a large direct-drive numerical control turntable, which adopts a direct-drive torque motor to directly drive a worktable to rotate, has the characteristics of large bearing capacity, large torsion and high precision, and simplifies the mechanical structure; the torque motor has the advantages of super-long service life, extremely low abrasion, great energy and material saving, and higher energy-saving and environment-friendly performance.
In order to achieve the purpose, the invention provides a large direct-drive numerical control rotary table which comprises a workbench and a rotary table body, wherein a torque motor is arranged in the rotary table body, the torque motor comprises a torque motor stator and a torque motor rotor, the torque motor stator is fixedly connected with the rotary table body, and the torque motor rotor is fixedly connected with the workbench so as to realize the rotary motion of the direct-drive workbench relative to the rotary table body when the torque motor is powered.
Preferably, the workbench is fixedly connected with the brake disc, and the rotating table body is fixedly connected with the passive pneumatic clamp so as to clamp the brake disc tightly and stop the workbench from continuously rotating when the torque motor is powered off.
Preferably, the turntable body and the torque motor stator are fixed through a stator connecting disc by bolts.
Preferably, the workbench and the turntable bearing are fixed through a turntable bearing connecting plate by bolts, and the turntable bearing connecting plate and the torque motor rotor are fixed through a rotor connecting plate by bolts.
Preferably, the workbench is fixedly connected with the encoder positioning shaft, and the rotary table body is fixedly connected with the angle encoder so as to record the rotating angle of the workbench during the rotating motion of the workbench.
Preferably, the center of the rotary table body is provided with a rib casting hole for installing an oil distributor base, the oil distributor transition body is fixedly connected with the oil distributor base, and the angle encoder is fixedly connected with the oil distributor transition body.
Preferably, the encoder positioning shaft is fixedly connected with the oil distributor mandrel and fixedly connected with the workbench through a centering flange plate.
Compared with the prior art, the large direct-drive numerical control turntable provided by the invention comprises a turntable body and a workbench capable of rotating relative to the turntable body, wherein a torque motor is arranged in the turntable body, the torque motor comprises a torque motor stator and a torque motor rotor, the turntable body and the torque motor stator are relatively fixed through fixed connection, the workbench and the torque motor rotor are relatively fixed through fixed connection, the torque motor supplies power and directly drives the workbench to do rotary motion relative to the turntable body, the large direct-drive numerical control turntable directly drives the workbench through the torque motor, the torque motor rotor rotates relative to the torque motor stator when the torque motor supplies power, the turntable body is fixed relative to the torque motor stator and does not move, the workbench moves along with the torque motor rotor to realize the rotary motion of the workbench relative to the turntable body, and the direct-drive torque motor directly drives the workbench to rotate, so that the large bearing capacity is realized, The characteristics of large torsion and high precision, and simultaneously, the mechanical structure is simplified; the torque motor has the advantages of super-long service life, extremely low abrasion, great energy and material saving, and higher energy-saving and environment-friendly performance.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a large direct-drive numerical control turntable provided in an embodiment of the present invention.
Wherein:
1-a workbench, 2-a turntable body, 3-a stator connecting disc, 4-a torque motor stator, 5-a torque motor rotor, 6-a rotor connecting disc, 7-a turntable bearing connecting disc, 8-a turntable bearing, 9-a brake disc, 10-a passive pneumatic clamp, 11-a centering flange plate, 12-an oil distributor mandrel, 13-an encoder positioning shaft, 14-an angle encoder, 15-an oil distributor transition body and 16-an oil distributor base.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a large direct-drive numerical control turntable according to an embodiment of the present invention.
The five-axis machining center in the prior art is widely applied to the industries of modern war industry, aerospace and the like, has the characteristics of high speed, high precision and composite machining, and can complete the surface machining of all parts by clamping at one time to the maximum extent. However, the working turntable is complex in mechanical transmission, low in efficiency, high in noise, high in requirements for equipment of machining, heat treatment and assembly processes of transmission parts, easy to wear, difficult to maintain and the like, high in requirements for an electrical control technology, and the design concept that a high-power high-inertia servo motor is needed to improve the dynamic response capability of the electric turntable is adopted.
Because of the complicated mechanical transmission structure, in the actual working process, when the turning spindle rotates at a high speed, the milling transmission mechanism is firstly separated from the working rotary table, meanwhile, the transmission mechanism for turning is connected to a gearbox with a low reduction ratio, then the servo motor is used for driving the working rotary table to rotate at a high speed for turning, and at the moment, the working rotary table can only rotate and cannot perform indexing and other work; when the rotary table is used as a low-speed milling indexing working rotary table, the turning transmission mechanism is separated from the working rotary table, the rotary table is connected with the other set of speed reducing mechanism for milling, and the rotary table is driven by a low-speed high-torque servo motor to complete indexing or high-torque milling, so that the rotary table is low in efficiency, easy to wear and poor in rotary positioning accuracy.
In a first specific embodiment, the large direct-drive numerical control turntable provided by the invention comprises a workbench 1 and a turntable body 2, the workbench 1 and the turntable body 2 are coaxial revolved bodies, the turntable body 2 is fixed relative to the ground, the workbench 1 is positioned on the upper side of the turntable body 2 and can coaxially rotate relative to the turntable body 2, in order to realize the rotary motion of the turntable body 2 relative to the workbench 1, a torque motor is arranged inside the turntable body 2, the torque motor comprises a torque motor stator 4 and a torque motor rotor 5, the torque motor stator 4 is fixedly connected with the turntable body 2, and the torque motor rotor 5 is fixedly connected with the workbench 1, so that the rotary motion of the workbench 1 relative to the turntable body 2 when the torque motor directly drives electricity.
Compared with a working turntable in the prior art, the workbench 1 provided by the invention is directly driven by the torque motor, the torque motor is a direct-drive torque motor, the torque motor stator 4 of the torque motor is fixedly connected with the turntable body 2 to realize relative fixation, the torque motor rotor 5 of the torque motor is fixedly connected with the workbench 1 to realize relative fixation, when the torque motor is powered, the torque motor rotor 5 rotates relative to the torque motor stator 4, and then the torque motor rotor 5 drives the workbench 1 to realize rotary motion relative to the turntable body 2.
It should be noted that the core improvement point of this embodiment lies in adopting the form of the direct-drive torque motor, not only simplifying the mechanical transmission structure, but also making this large-scale direct-drive numerical control turntable have the characteristics of large bearing capacity, large torque and high precision, the torque motor has an ultra-long service life, the wear is extremely low, the energy and material are greatly saved, and it has higher energy-saving and environmental protection performance. As for the installation form of the turntable body 2 and the connection form of the worktable 1 and the turntable body 2, reference is made to the prior art, and the description thereof is omitted.
In addition, the invention further simplifies the mechanical structure; in the embodiment, a braking mechanism is arranged between the workbench 1 and the turntable body 2, the braking mechanism comprises a brake disc 9 and a passive pneumatic clamp 10, and the brake disc 9 is tightly held by the passive pneumatic clamp 10 to realize braking; the workbench 1 is fixedly connected with the brake disc 9, the rotary table body 2 is fixedly connected with the passive pneumatic clamp 10, and the passive pneumatic clamp 10 is used for tightly holding the brake disc 9 to enable the rotary table body 2 to be still relative to the workbench 1.
Illustratively, the brake disc 9 is fixed to the turret body 2 in the form of a screw, and the passive pneumatic clamp 10 is fixed to the turret body 2 in the form of a screw.
Specifically, the passive pneumatic clamp 10 can adopt a pneumatic control mode, and is started when the torque motor is powered off, at the moment, the workbench 1 continuously rotates under the action of inertia and cannot be immediately braked, and the binding clip of the passive pneumatic clamp 10 is attached to and clamps or tightly holds the brake disc 9, so that the workbench 1 can be rapidly braked relative to the turntable body 2 and stops rotating, and the two actions of powering off the torque motor and stopping the workbench 1 are instantly synchronous.
More specifically, the turntable body 2 is fixedly connected with a torque motor stator 4 through a stator connecting disc 3; wherein, a part of the stator connecting disc 3 is fixed with the rotary table body 2 by bolts, and the other part of the stator connecting disc 3 is fixed with the torque motor stator 4 by bolts, thereby realizing the fixed connection of the rotary table body 2 and the torque motor stator 4, and the rotary table body 2, the stator connecting disc 3 and the torque motor stator 4 are all annularly arranged and are arranged in the sequence from outside to inside.
More specifically, the workbench 1 is fixedly connected with a turntable bearing 8 through a turntable bearing connecting disc 7, and the turntable bearing connecting disc 7 is fixedly connected with the torque motor rotor 5 through a rotor connecting disc 6; wherein, a part of the turntable bearing connecting disc 7 is fixed with the workbench 1 by bolts, the other part of the turntable bearing connecting disc 7 is fixed with the turntable bearing 8 by bolts, a part of the rotor connecting disc 6 is fixed with the turntable bearing connecting disc 7 by bolts, the other part of the rotor connecting disc 6 is fixed with the torque motor rotor 5 by bolts, and the torque motor rotor 5, the rotor connecting disc 6, the turntable bearing connecting disc 7 and the turntable bearing 8 are all annularly arranged and are arranged in the sequence from outside to inside. Wherein, the turntable bearing connecting disc 7 is a YRT turntable bearing connecting disc.
In this embodiment, through simplifying the mechanical transmission structure, when the torque motor is powered, the torque motor stator 4, the stator connection disc 3 and the turntable body 2 are not moved, and the torque motor rotor 5 drives the YRT turntable bearing connection disc through the rotor connection disc 6, so that the workbench 1 is stably driven to rotate.
Further, in order to realize high-precision angle positioning of the workbench 1, an angle mechanism is arranged between the workbench 1 and the rotary table body 2, the angle mechanism comprises an encoder positioning shaft 13 and an angle encoder 14, the inside of the angle encoder 14 is divided into a rotary body and a fixed body, the rotary body rotates relative to the fixed body, the fixed body is fixed relative to the encoder positioning shaft 13, and the angle encoder 14 rotates relative to the encoder positioning shaft 13; wherein, workstation 1 and encoder location axle 13 fixed connection, revolving stage body 2 and angle encoder 14 fixed connection, the fixed body receives the angle position signal of rotator and returns PLC again to record and control workstation 1's rotation angle when realizing workstation 1 rotary motion.
Specifically, a rib casting hole is formed in the center of the rotary table body 2, the oil separator base 16 can be fixed in the rib casting hole in the center of the rotary table body 2 through a bolt, the oil separator transition body 15 can be fixedly connected with the oil separator base 16 through a bolt, and the angle encoder 14 can be fixed on the oil separator transition body 15 through a bolt.
Specifically, the encoder positioning shaft 13 and the oil separator core shaft 12 are fixedly connected together in a bolt manner and are fixed on the workbench 1 together by the centering flange 11 in a bolt manner.
In this embodiment, the centering flange 11, the oil separator core shaft 12, and the encoder positioning shaft 13 are fixed relative to the table 1 and rotate synchronously with the table 1, the angle encoder 14, the oil separator transition body 15, and the oil separator base 16 are fixed relative to the table 2 and fixed differently on the table 2, and when the table 1 rotates relative to the table 2, the recording of the rotation angle of the table 1 is realized.
It should be emphasized that the core improvement point of this embodiment lies not only in the driving manner of the direct-drive torque motor and the braking manner of the passive pneumatic clamp 10, but also in the high-precision angular positioning after simplifying the mechanical transmission structure, reducing the machining of the manufacturing parts, and having large torque, large bearing capacity, high angular positioning precision and strong dynamic response capability.
The large direct-drive numerical control turntable provided by the invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (7)
1. The utility model provides a large-scale numerical control revolving stage that directly drives, its characterized in that, includes workstation (1) and the revolving stage body (2), be equipped with torque motor in the revolving stage body (2), torque motor includes torque motor stator (4) and torque motor rotor (5), torque motor stator (4) with revolving stage body (2) fixed connection, torque motor rotor (5) with workstation (1) fixed connection, in order to realize directly drive when the torque motor gives the electricity workstation (1) is relative revolving stage body (2) rotary motion.
2. The large direct-drive numerical control turntable according to claim 1, wherein the worktable (1) is fixedly connected with a brake disc (9), and the turntable body (2) is fixedly connected with a passive pneumatic clamp (10) so as to enable the passive pneumatic clamp (10) to hold the brake disc (9) tightly and stop the worktable (1) from continuing to rotate when the torque motor is powered off.
3. The large direct-drive numerical control turntable according to claim 1, wherein the turntable body (2) and the torque motor stator (4) are fixed by bolts through stator connecting discs (3).
4. The large direct-drive numerical control turntable according to claim 1, wherein the worktable (1) and the turntable bearing (8) are fixed by bolts through a turntable bearing connecting disc (7), and the turntable bearing connecting disc (7) and the torque motor rotor (5) are fixed by bolts through a rotor connecting disc (6).
5. A large direct-drive numerical control turntable according to any one of claims 1 to 4, characterized in that the worktable (1) is fixedly connected with an encoder positioning shaft (13), and the turntable body (2) is fixedly connected with an angle encoder (14) to record the rotation angle of the worktable (1) during the rotation movement of the worktable (1).
6. The large direct-drive numerical control turntable according to claim 5, wherein a rib casting hole for installing an oil distributor base (16) is formed in the center of the turntable body (2), the oil distributor transition body (15) is fixedly connected with the oil distributor base (16), and the angle encoder (14) is fixedly connected with the oil distributor transition body (15).
7. A large direct-drive numerical control turntable according to claim 5, characterized in that the encoder positioning shaft (13) is fixedly connected with the oil separator mandrel (12) and is fixedly connected with the worktable (1) together through a centering flange (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010061456.4A CN111168415A (en) | 2020-01-19 | 2020-01-19 | Large-scale direct-drive numerical control turntable |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010061456.4A CN111168415A (en) | 2020-01-19 | 2020-01-19 | Large-scale direct-drive numerical control turntable |
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| CN111168415A true CN111168415A (en) | 2020-05-19 |
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| CN202010061456.4A Pending CN111168415A (en) | 2020-01-19 | 2020-01-19 | Large-scale direct-drive numerical control turntable |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113059366A (en) * | 2021-03-25 | 2021-07-02 | 山东豪迈机械科技股份有限公司 | Numerical control rotary table and numerical control machine tool comprising same |
| CN114055193A (en) * | 2021-11-17 | 2022-02-18 | 山东省机械设计研究院 | Double-drive speed regulation rotary table of numerical control machine tool |
| CN114226868A (en) * | 2021-12-28 | 2022-03-25 | 湖南中大创远数控装备有限公司 | Forming grinding wheel gear grinding machine tool |
| CN116690241A (en) * | 2023-08-07 | 2023-09-05 | 通用技术集团机床工程研究院有限公司 | High-precision turning and milling composite rotary table |
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| CN113059366A (en) * | 2021-03-25 | 2021-07-02 | 山东豪迈机械科技股份有限公司 | Numerical control rotary table and numerical control machine tool comprising same |
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Address after: No. 81, Guangji Road, Economic Development Zone, Longyou County, Quzhou City, Zhejiang Province 324000 Applicant after: Zhejiang Zhongfu Industrial Technology Co.,Ltd. Address before: No. 81, Guangji Road, Economic Development Zone, Longyou County, Quzhou City, Zhejiang Province 324400 Applicant before: Zhejiang Zhongfu Precision Machine Tool Co.,Ltd. |