CN111451840B - High-speed self-balancing rotary table - Google Patents
High-speed self-balancing rotary table Download PDFInfo
- Publication number
- CN111451840B CN111451840B CN202010267426.9A CN202010267426A CN111451840B CN 111451840 B CN111451840 B CN 111451840B CN 202010267426 A CN202010267426 A CN 202010267426A CN 111451840 B CN111451840 B CN 111451840B
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- liquid filling
- radial bearing
- base
- gear
- filling workbench
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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
- B23Q1/44—Movable or adjustable work or tool supports using particular mechanisms
- B23Q1/50—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism
- B23Q1/52—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism a single rotating pair
- B23Q1/522—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism a single rotating pair which is perpendicular to the working surface
-
- 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
- B23Q23/00—Arrangements for compensating for irregularities or wear, e.g. of ways, of setting mechanisms
Abstract
A high-speed self-balancing rotary table comprises a liquid filling workbench, a gear ring, a base, a central spindle, a transmission shaft, a thrust bearing, a radial bearing, a gear, a bevel gear, an oil plug and a driving motor assembly, wherein a cavity of the liquid filling workbench is filled with oil, the side surface of the liquid filling workbench is provided with the oil plug, and a workpiece mounting hole is formed in the oil plug; the central main shaft is fixed on the center of the base, and the liquid filling workbench is arranged on the base; the thrust bearing A is arranged in a central concave body of the liquid filling workbench, the radial bearing A is arranged below the thrust bearing A, the thrust bearing B is arranged on the outer side of the radial bearing, and the gear ring is fixed below the liquid filling workbench; the transmission shaft is arranged on one side in the base through a radial bearing B and a radial bearing C, the gear and the bevel gear are arranged on the transmission shaft, and the gear is meshed with the gear ring; the driving motor is fixed on the outer side of the base, and an output shaft of the driving motor is connected with the bevel gear key. The invention can automatically balance the unbalanced force generated by the turntable and the workpiece at high speed, prolong the service life of the bearing and cover various workpieces.
Description
Technical Field
The invention relates to the technical field of machine tools, in particular to a high-speed self-balancing rotary table.
Background
The high-speed turntable is one of main devices for processing aluminum materials and other soft metals in the machine tool industry and is also an important test device for aviation and aerospace enterprises, so that the high-speed turntable plays a vital role in national production. However, the current high-speed turntable is limited by the structure and is greatly limited in use.
Firstly, the processing and manufacturing of the rotary table at the present stage cannot achieve complete quality symmetry, when the use rotating speed of the rotary table is very high, the centrifugal force generated by the rotary table per se is very large, the damage to the bearing of the rotary table is also very large, and therefore the working rotating speed and the service life of the rotary table are seriously influenced.
Secondly, the mass distribution requirement on the workpiece is strict, the mass center of the workpiece cannot deviate from the rotation center of the rotary table too much, and when the deviation is large, a large centrifugal force can be generated.
Finally, the clamping and positioning requirements on the workpiece are strict, and if a large unbalance load is generated in the clamping process, a large centrifugal force is also generated.
In summary, for the above reasons, the rotation speed cannot be increased during the use of the high-speed turntable; the bearing is used as a key part bearing of the rotary table and is easy to fatigue and lose efficacy; the clamping and positioning of the workpiece cannot generate large unbalance loading. These adverse factors severely affect the requirements of aluminum processing for high speed turntables.
Disclosure of Invention
The invention provides a high-speed self-balancing rotary table, aiming at solving the serious problems that the conventional high-speed rotary table cannot reach high rotating speed, a bearing is easy to fatigue damage, cannot bear larger unbalance load, has strict requirements on clamping and positioning and the like.
The invention mainly comprises a liquid filling workbench, a gear ring, a base, a central spindle, a transmission shaft, a thrust bearing, a radial bearing, a gear, a bevel gear, an oil plug and a driving motor assembly, wherein the liquid filling workbench is of a concave structure, a cavity is arranged in the liquid filling workbench, balanced oil is filled in the cavity, the oil plug is arranged on the side surface of the cavity of the liquid filling workbench, and a workpiece mounting hole is formed in the liquid filling workbench; the central main shaft is fixed on the center of the base, and the liquid filling workbench is arranged on the base; the thrust bearing A seat ring is arranged in a central concave body of the liquid filling workbench, a shaft ring of the thrust bearing A is arranged at the upper part of a central main shaft, and the thrust bearing A presses the liquid filling workbench on the base through a gland; the radial bearing A is arranged below the thrust bearing A, the inner ring of the radial bearing A is arranged on the central spindle, and the outer ring of the radial bearing A is arranged on the liquid filling workbench; the thrust bearing B is arranged on the outer side of the radial bearing, a shaft ring of the thrust bearing B is arranged on the liquid filling workbench, and a seat ring is arranged on the base; the gear ring is fixed below the liquid filling workbench; the transmission shaft is vertically arranged on one side in the base through a radial bearing B and a radial bearing C, the radial bearing B is arranged on the upper part of the transmission shaft, the radial bearing C is arranged at the bottom of the transmission shaft, and outer rings of the radial bearing B and the radial bearing C are arranged on the base; the gear and the bevel gear are arranged on the transmission shaft through keys, the bevel gear is arranged below the radial bearing B, the gear is arranged above the radial bearing B, and the gear is meshed with the gear ring; the driving motor is fixed on the outer side of the base, and an output shaft of the driving motor is connected with the bevel gear key; oil in the liquid filling workbench is adjusted through an oil plug, and the base and the central spindle are provided with lubricating oil holes of each bearing pair.
The driving motor drives the transmission shaft to do rotary motion through the bevel gear, and the transmission shaft drives the liquid filling workbench to do high-speed rotary motion on the base around the central spindle through the gear and the gear ring. When the rotary table works, firstly, a workpiece is clamped on the liquid filling workbench through the tooling fixture; secondly, connecting a lubricating oil pipeline, and performing liquid lubrication on all friction pairs of the rotary table; and finally, starting a driving motor to drive the rotary table to rotate at a high speed. After the rotary table reaches the required rotating speed, oil in the liquid filling cavity of the liquid filling workbench automatically flows to a position balanced with the centripetal force, so that the center of gravity of the rotary table and the workpiece tends to the rotation center of the rotary table, and the self-balance of the rotary table is completed. When the gravity center of the workpiece is not large relative to the rotation center of the rotary table, the liquid filling amount of the liquid filling workbench is reduced by calculating the weight and the centrifugal force of the workpiece, so that the load can be reduced, and the purpose of energy conservation is achieved.
Compared with the prior art, the invention has the following advantages:
1. the unbalanced force generated by the rotary table and the workpiece at a high speed can be automatically balanced, and manual operation and any redundant devices are not needed for monitoring and adjusting.
2. The centrifugal force generated by the rotary table and the workpiece at high speed is balanced, so that the bearable rotating speed can be higher than that of a common high-speed rotary table.
3. Since the centrifugal forces are balanced, the service life of the bearing is increased.
4. According to the principle of liquid-filled rigid body self-rotation stability, the oil in the liquid-filled cavity of the workbench automatically adjusts the mass centers of the turntable and the workpiece, so that the bearable unbalance loading capability is stronger.
5. The range of the centrifugal force which can be balanced is large, and the types of the covered workpieces are various.
6. The operation and maintenance are convenient, and the requirement of aluminum processing and the like on the high rotating speed of the rotary table is completely met.
Drawings
FIG. 1 is a schematic cross-sectional view of the present invention.
Fig. 2 is a top view of the present invention.
In the figure: 1-liquid filling workbench, 2-gear ring, 3-thrust bearing A, 4-thrust bearing B, 5-radial bearing A, 6-central main shaft, 7-base, 8-transmission shaft, 9-gear, 10-radial bearing B, 11-bevel gear, 12-driving motor, 13-radial bearing C and 14-oil plug.
Detailed Description
In the schematic diagrams of the high-speed self-balancing rotary table shown in fig. 1 and 2, a liquid filling workbench 1 is of a concave structure, a cavity is arranged in the liquid filling workbench, balancing oil is filled in the cavity, an oil plug 14 is arranged on the side surface of the cavity of the liquid filling workbench, and a workpiece mounting hole is formed in the liquid filling workbench; the central main shaft 6 is fixed on the center of the base 7; the liquid filling workbench is arranged on the base; the seat ring of the thrust bearing A3 is arranged in the central concave body of the liquid filling workbench, the shaft ring is arranged at the upper part of the central main shaft, and the thrust bearing A presses the liquid filling workbench on the base through the gland; the radial bearing A5 is arranged below the thrust bearing A, the inner ring of the radial bearing A is arranged on the central spindle, and the outer ring of the radial bearing A5 is arranged on the liquid filling workbench; the thrust bearing B4 is arranged on the outer side of the radial bearing, a shaft ring of the thrust bearing B4 is arranged on the liquid filling workbench, and a seat ring is arranged on the base; the gear ring 2 is fixed below the liquid filling workbench, the transmission shaft 8 is vertically arranged at one side in the base through a radial bearing B10 and a radial bearing C13, the inner ring of the radial bearing B is arranged at the upper part of the transmission shaft, the outer ring of the radial bearing B is arranged on the base, the inner ring of the radial bearing C is arranged at the bottom of the transmission shaft, the outer ring of the radial bearing C is arranged on the base, the gear 9 and the bevel gear 11 are arranged on the transmission shaft through keys, the bevel gear is arranged below the radial bearing B, the gear is arranged above the radial bearing B, and the gear is meshed with the gear ring; the electric driving machine 12 is fixed on the outer side of the base, and an output shaft of the driving motor is connected with a bevel gear key; oil in the liquid filling workbench is adjusted through an oil plug, and the base and the central spindle are provided with lubricating oil holes of each bearing pair.
Claims (1)
1. A high-speed self-balancing rotary table is characterized by comprising a liquid filling workbench, a gear ring, a base, a central main shaft, a transmission shaft, a thrust bearing, a radial bearing, a gear, a bevel gear, an oil plug and a driving motor assembly, wherein the liquid filling workbench (1) is of a concave structure, a cavity is arranged in the liquid filling workbench, balancing oil liquid is filled in the cavity, the oil plug (14) is arranged on the side surface of the cavity of the liquid filling workbench, and a workpiece mounting hole is formed in the liquid filling workbench; the central main shaft (6) is fixed on the center of the base (7), and the liquid filling workbench is arranged on the base; a thrust bearing A (3) seat ring is arranged in a central concave body of the liquid filling workbench, a shaft ring is arranged at the upper part of a central main shaft, and the thrust bearing A presses the liquid filling workbench on the base through a gland; the radial bearing A (5) is arranged below the thrust bearing A, the inner ring of the radial bearing A is arranged on the central spindle, and the outer ring of the radial bearing A is arranged on the liquid filling workbench; the thrust bearing B (4) is arranged on the outer side of the radial bearing, a shaft ring of the thrust bearing B is arranged on the liquid filling workbench, and a seat ring is arranged on the base; the gear ring (2) is fixed below the liquid filling workbench; the transmission shaft (8) is vertically arranged on one side in the base through a radial bearing B (10) and a radial bearing C (13), the radial bearing B (10) is arranged on the upper part of the transmission shaft, the radial bearing C (13) is arranged at the bottom of the transmission shaft, and outer rings of the radial bearing B (10) and the radial bearing C (13) are arranged on the base; a gear (9) and a bevel gear (11) are arranged on the transmission shaft through keys, the bevel gear is arranged below the radial bearing B, the gear is arranged above the radial bearing B, and the gear is meshed with the gear ring; the driving motor (12) is fixed on the outer side of the base, and an output shaft of the driving motor is connected with a bevel gear key; oil in the liquid filling workbench is adjusted through an oil plug, and the base and the central spindle are provided with lubricating oil holes of each bearing pair.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010267426.9A CN111451840B (en) | 2020-04-08 | 2020-04-08 | High-speed self-balancing rotary table |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010267426.9A CN111451840B (en) | 2020-04-08 | 2020-04-08 | High-speed self-balancing rotary table |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111451840A CN111451840A (en) | 2020-07-28 |
| CN111451840B true CN111451840B (en) | 2021-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010267426.9A Active CN111451840B (en) | 2020-04-08 | 2020-04-08 | High-speed self-balancing rotary table |
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Citations (6)
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| CN1402247A (en) * | 2001-08-10 | 2003-03-12 | 阿尔卑斯电气株式会社 | Disk device |
| DE102007053723A1 (en) * | 2007-11-10 | 2009-05-14 | Schaeffler Kg | Rotating part balancing device for e.g. washing machine, has roller bearing formed as two-rows, where one row of one of rolling bodies is exchanged by mass-balancing gears such that single-piece unit is formed from cavity, gears and bodies |
| CN102313626A (en) * | 2011-03-28 | 2012-01-11 | 中国计量学院 | Online dynamic balance head of liquid type high-speed rotor and technological embodiment thereof |
| WO2013097301A1 (en) * | 2011-12-30 | 2013-07-04 | 北京博华信智科技发展有限公司 | Online automatic balancer for air pressure liquid-type rotor |
| CN103286570A (en) * | 2013-05-07 | 2013-09-11 | 青岛大成机床有限公司 | Working table of large-scale vertical high-speed numerically-controlled lathe |
| CN207757342U (en) * | 2018-01-09 | 2018-08-24 | 西安交通大学 | A kind of molding integrated on-line dynamic balancing terminal structures of 3D |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4317943B2 (en) * | 2005-02-08 | 2009-08-19 | キタムラ機械株式会社 | Rotating device |
| CN2814035Y (en) * | 2005-06-30 | 2006-09-06 | 宝山钢铁股份有限公司 | Self-balance rotary sealing device |
| WO2008071033A1 (en) * | 2006-12-12 | 2008-06-19 | Fenchao Wu | A continuous subsider with balanced rotation under chassis |
| CN201275689Y (en) * | 2008-09-19 | 2009-07-22 | 中捷机床有限公司 | Closed type static pressure turntable and external clamp structure thereof |
| CN102039527B (en) * | 2010-09-29 | 2013-03-13 | 中捷机床有限公司 | Open-type static pressure rotating table for controlling floating degree and manufacturing method thereof |
| CN103148164B (en) * | 2013-03-05 | 2015-03-11 | 北京化工大学 | Target control method and control system of liquid-type on-line autobalance device |
| CN109026676A (en) * | 2016-12-21 | 2018-12-18 | 黄山赛德工业泵有限公司 | Quimby pump is used in a kind of conveying of self-balancing |
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2020
- 2020-04-08 CN CN202010267426.9A patent/CN111451840B/en active Active
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| CN1402247A (en) * | 2001-08-10 | 2003-03-12 | 阿尔卑斯电气株式会社 | Disk device |
| DE102007053723A1 (en) * | 2007-11-10 | 2009-05-14 | Schaeffler Kg | Rotating part balancing device for e.g. washing machine, has roller bearing formed as two-rows, where one row of one of rolling bodies is exchanged by mass-balancing gears such that single-piece unit is formed from cavity, gears and bodies |
| CN102313626A (en) * | 2011-03-28 | 2012-01-11 | 中国计量学院 | Online dynamic balance head of liquid type high-speed rotor and technological embodiment thereof |
| WO2013097301A1 (en) * | 2011-12-30 | 2013-07-04 | 北京博华信智科技发展有限公司 | Online automatic balancer for air pressure liquid-type rotor |
| CN103286570A (en) * | 2013-05-07 | 2013-09-11 | 青岛大成机床有限公司 | Working table of large-scale vertical high-speed numerically-controlled lathe |
| CN207757342U (en) * | 2018-01-09 | 2018-08-24 | 西安交通大学 | A kind of molding integrated on-line dynamic balancing terminal structures of 3D |
Non-Patent Citations (1)
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| 基于旋转式机械自动平衡装置的研究;刘文倩等;《拖拉机与农用运输车》;20161215(第06期);全文 * |
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| CN111451840A (en) | 2020-07-28 |
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