CN113523830A - Numerical control precision rotary worktable - Google Patents
Numerical control precision rotary worktable Download PDFInfo
- Publication number
- CN113523830A CN113523830A CN202110807178.7A CN202110807178A CN113523830A CN 113523830 A CN113523830 A CN 113523830A CN 202110807178 A CN202110807178 A CN 202110807178A CN 113523830 A CN113523830 A CN 113523830A
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- rotating
- clamping
- servo motor
- screw rod
- clamping table
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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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- Mechanical Engineering (AREA)
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Abstract
The invention provides a numerical control precision rotary worktable, comprising: the device comprises a working bottom plate, a rotating device, a rotating platform, two clamping platform moving devices and two clamping platforms; the rotating device comprises a box body, a rotating shaft, a rotating disc, a transmission mechanism and a first servo motor; the two clamping table moving devices are respectively and symmetrically arranged on the rotating table, each clamping table moving device is correspondingly connected with one clamping table, and the clamping table moving devices are used for controlling the corresponding clamping tables to perform linear displacement; the two clamping tables are displaced on the same straight line. When the clamping table needs to be rotated, only the first servo motor needs to be started, so that the rotating table rotates by a corresponding angle, and the clamping table rotates by a corresponding angle. Compared with the prior art, the numerical control precision rotating worktable has the advantages of simple structure, lower cost, higher rotating precision and convenient control.
Description
Technical Field
The invention relates to the field of mechanical manufacturing equipment, in particular to a numerical control precision rotary workbench.
Background
The conventional rotary exchange device of the machine tool workbench usually finishes actions by an oil cylinder part, the oil cylinder part occupies a large space, needs a plurality of parts and has a complex structure, so that the cost is higher.
Disclosure of Invention
The invention aims to provide a numerical control precision rotary worktable to solve the defects in the prior art.
The invention relates to a numerical control precision rotary worktable, which comprises:
the device comprises a working bottom plate, a rotating device, a rotating platform, two clamping platform moving devices and two clamping platforms;
the rotating device comprises a box body, a rotating shaft, a rotating disc, a transmission mechanism and a first servo motor; the box body is fixedly arranged on the working bottom plate; the rotating shaft and the transmission mechanism are positioned in the box body, the lower end of the rotating shaft is rotatably connected to the working bottom plate, and the rotating disc is fixedly sleeved on the rotating shaft; the transmission mechanism is in transmission connection with the rotating disc and is used for driving the rotating disc to rotate; the first servo motor is fixedly arranged on the working bottom plate and used for providing power for the transmission mechanism;
the rotating table is arranged at the upper end of the rotating shaft; the two clamping table moving devices are respectively and symmetrically arranged on the rotating table, each clamping table moving device is correspondingly connected with one clamping table, and the clamping table moving devices are used for controlling the corresponding clamping tables to perform linear displacement; the two clamping tables are displaced on the same straight line.
Compared with the prior art, the numerical control precision rotating worktable has the advantages of simple structure, lower cost, higher rotating precision and convenient control.
In a preferred or alternative embodiment, the transmission mechanism comprises a reduction gear set and two cambered cams with opposite spiral directions: the reduction gear set comprises a driving gear and two driven gears; the driving gear is mounted on an output shaft of the first servo motor, and the two driven gears are respectively and symmetrically arranged on two sides of the driving gear and are in meshing transmission with the driving gear;
the two cambered cams are arranged in the box body through bearing seats and are respectively positioned on two sides of the rotating disc, the shaft end of one cambered cam is arranged on one driven gear, and the shaft end of the other cambered cam is arranged on the other driven gear;
the rotary disc comprises rollers and a disc body, and the rollers are uniformly distributed on the periphery of the disc body and are respectively in meshed transmission with the cambered surface cams on the two sides of the disc body.
In a preferred or optional embodiment, the clamping table moving device comprises a second servo motor, a screw rod, a slide rail, a slide block and a driving block; the second servo motor, the screw rod and the slide rail are all arranged on the rotary table; an output shaft of the second servo motor is connected with the screw rod and used for driving the screw rod to rotate; the driving block is sleeved on the screw rod, and an internal thread in threaded transmission connection with the screw rod is arranged in the driving block; the sliding block is connected with the sliding rail in a sliding fit manner; the lower side of the clamping table is connected with the sliding block and the driving block.
In a preferred or optional embodiment, the clamping table is provided with a fixing part for fixing an object.
In a preferred or optional embodiment, the numerically controlled precision rotary table further comprises a controller, and the controller is electrically connected with the first servo motor and the second servo motor, and is used for receiving control signals and controlling the rotation of the first servo motor and the second servo motor.
In a preferred or optional embodiment, the clamping table moving device further includes an upper limit sensor and a lower limit sensor, the upper limit sensor and the lower limit sensor are disposed at one side of the screw rod and located at the head end and the tail end of the screw rod respectively, and the upper limit sensor and the lower limit sensor are electrically connected to the controller for sensing the position of the driving block.
For a better understanding and practice, the invention is described in detail below with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic structural view of a numerically controlled precision rotary table according to the present invention;
FIG. 2 is a schematic view of a partial structure of a rotary device of the numerically controlled precision rotary table according to the present invention;
FIG. 3 is a schematic view of a part of the structure of a clamping table moving device of the numerically controlled precision rotary table according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, 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 application.
It will be understood that in the description of the present application, the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present application. The terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, i.e. a feature defined as "first", "second" may explicitly or implicitly include one or more of such features. Further, unless otherwise specified, "a plurality" means two or more.
It should be noted that, in the description of the present application, unless otherwise explicitly specified or limited, the terms "disposed," "connected," and "hollow" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Referring to fig. 1 to 3, the present embodiment provides a numerical control precision rotary table, which includes a work base 10, a rotary device 20, a rotary table 30, two clamping tables 50, and two clamping table moving devices 40.
As shown in fig. 2, specifically, the rotating device 20 includes a box 21, a rotating shaft 22, a rotating disk 23, a transmission mechanism 24, and a first servo motor 25; the box body 21 is fixedly arranged on the working bottom plate 10; the rotating shaft 22 and the transmission mechanism 24 are positioned in the box body 21, the lower end of the rotating shaft 22 is rotatably connected to the working bottom plate 10, and the rotating disc 23 is fixedly sleeved on the rotating shaft 22; the transmission mechanism 24 is in transmission connection with the rotating disc 23 and is used for driving the rotating disc 23 to rotate; the first servo motor 25 is fixedly disposed on the work base plate 10, and is configured to provide power to the transmission mechanism 24, and the rotating platform 30 is mounted on the upper end of the rotating shaft 22. When the first servo motor 25 rotates, the rotating disc 23 can be driven to rotate by the transmission mechanism 24, so that the rotating shaft 22 and the rotating table 30 rotate. Specifically, the lower end of the rotary shaft 22 is supported on the work base 10 by a thrust ball bearing, and the upper end of the rotary shaft 22 is supported at the center of the case 21 by a bearing, so that the rotary shaft 22 can receive the axial force by the above-described support method.
The two clamping table moving devices 40 are respectively symmetrically arranged on the rotating table 30, each clamping table moving device 40 is correspondingly connected with one clamping table 50, and the clamping table moving devices 40 are used for controlling the corresponding clamping tables 50 to perform linear displacement; the two clamping tables 50 are displaced on the same straight line. The clamping tables 50 can be used for placing and fixing workpieces, and the two clamping tables 50 can be close to or far away from each other under the control of the corresponding clamping table moving devices 40 and are matched with workpieces with different lengths.
By the arrangement, when the clamping table 50 needs to be rotated, only the first servo motor 25 needs to be started, so that the rotating table 30 rotates by a corresponding angle, and the clamping table 50 rotates by a corresponding angle. The numerical control precision rotating worktable has the advantages of simple structure, lower cost, higher rotating precision and convenient control.
Specifically, the transmission mechanism 24 includes a reduction gear set and two cambered cams 243 with opposite spiral directions: the reduction gear set comprises a driving gear 241 and two driven gears 242; the driving gear 241 is mounted on an output shaft of the first servo motor 25, and the two driven gears 242 are respectively symmetrically arranged at two sides of the driving gear 241 and are in meshing transmission with the driving gear 241. The two cambered cams 243 are arranged in the box body 21 through bearing seats and are respectively positioned at two sides of the rotating disc 23, wherein the shaft end of one cambered cam 243 is arranged on one driven gear 242, and the shaft end of the other cambered cam 243 is arranged on the other driven gear 242. The rotating disc 23 comprises rollers 231 and a disc body 232, wherein the rollers 231 are uniformly distributed on the periphery of the disc body 232 and are respectively meshed with the arc cams 243 on two sides of the disc body 232 for transmission.
The rotating device is meshed with the roller 231 of the rotating disc 23 through the spiral grooves of the two cambered cams 243 to drive the rotating disc 23 and the rotating shaft 22 to rotate. The transmission mechanism 24 thus provided enables the rotation shaft 22 to rotate smoothly, and the angle control is precise.
As shown in fig. 3, specifically, the clamping table moving device 40 includes a second servo motor 41, a screw 42, a slide rail 43, a slider 44, and a driving block 45; the second servo motor 41, the screw 42 and the slide rail 43 are all mounted on the rotary table 30; an output shaft of the second servo motor 41 is connected with the screw rod 42 and is used for driving the screw rod 42 to rotate; the driving block 45 is sleeved on the screw rod 42, and an internal thread in threaded transmission connection with the screw rod 42 is arranged in the driving block; the sliding block 44 is connected with the sliding rail 43 in a sliding fit manner; the underside of the clamping table 50 is connected to the slide 44 and the drive block 45.
With such an arrangement, when the second servo motor 41 is started, the screw rod 42 can be driven to rotate, so that the driving block 45 moves along the axial direction of the screw rod 42, and the clamping table 50 is driven to perform linear displacement. The cooperation of the sliding block 44 and the sliding rail 43 can make the clamping table 50 more stable during displacement, and ensure the correct direction. The two slide rails 43 are preferably located at two sides of the screw rod 42, correspondingly, the two slide blocks 44 are also provided, and each slide rail 43 is provided with one slide block 44 correspondingly.
Preferably, the clamping table 50 is provided with a fixing portion 51 for fixing an object. The fixing portion 51 may have various structures as long as the function of fixing an object can be achieved.
Further, the numerical control precision rotation table of the present invention further includes a controller (not shown), and the controller is electrically connected to the first servo motor 25 and the second servo motor 41, and is configured to receive a control signal and control rotation of the first servo motor 25 and the second servo motor 41. The rotation of the first servo motor 25 and the second servo motor 41, and thus the rotation angle of the rotary table 30 and the moving distance of the clamping table 50, can be controlled only by sending control signals to the controller.
Further, the clamping table moving device 40 further includes an upper limit sensor 46 and a lower limit sensor 47, the upper limit sensor 46 and the lower limit sensor 47 are disposed at one side of the screw rod 42 and located at the head end and the tail end of the screw rod 42, respectively, and the upper limit sensor 46 and the lower limit sensor 47 are electrically connected to the controller for sensing the position of the driving block 45. The upper limit sensor 46 and the lower limit sensor 47 may be a magnetic induction proximity sensor, a photoelectric sensor, an optical fiber sensor, or the like. When the driving block 45 moves towards the head end of the screw rod 42 and exceeds the stroke, the upper limit sensor 46 senses the driving block 45, and sends a control signal to the controller, so that the controller controls the second servo motor 41 to stop rotating; when the driving block 45 moves towards the end of the screw rod 42 and exceeds the stroke, the lower limit sensor 47 senses the driving block 45, and sends a control signal to the controller, so that the controller controls the second servo motor 41 to stop rotating.
The using process of the invention is as follows:
starting the first servo motor 25, driving the driving gear 241 through the first servo motor 25, synchronously driving the two driven gears 242 through the driving gear 241, synchronously driving the two arc cams 243 through the two driven gears 242, driving the rotating disc 23 through the arc cams 243, driving the rotating shaft 22 through the rotating disc 23, and finally driving the rotating disc 30 to rotate; in addition, the second servo motor 41 is started, the screw rod 42 is driven to rotate by the second servo motor 41, the screw rod 42 drives the driving block 45 to move, and then the clamping table 50 is driven to perform linear displacement by the driving block 45, so that the clamping table 50 is located at a position where a workpiece can be placed.
The invention has the following beneficial effects:
1. the cambered surface cams of the invention are symmetrically distributed on two sides of the rotating disc, so that the number of rollers engaged is doubled, the stability and the bearing capacity are improved, and the invention has the characteristics of high transmission efficiency, low energy consumption, small heat generation, stable transmission, high sensitivity, high precision and the like of the cambered surface cams.
2. The transmission mechanism solves the problems of large load bearing capacity and short service life of the transmission mechanism of a unilateral transmission mechanism, and ensures the motion stability of the rotating platform.
3. The clamping table moving device has the advantages of small transmission error, accurate position control of the clamping table and stability in moving of the clamping table.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (6)
1. A numerical control precision rotary table, comprising:
the device comprises a working bottom plate, a rotating device, a rotating platform, two clamping platform moving devices and two clamping platforms;
the rotating device comprises a box body, a rotating shaft, a rotating disc, a transmission mechanism and a first servo motor; the box body is fixedly arranged on the working bottom plate; the rotating shaft and the transmission mechanism are positioned in the box body, the lower end of the rotating shaft is rotatably connected to the working bottom plate, and the rotating disc is fixedly sleeved on the rotating shaft; the transmission mechanism is in transmission connection with the rotating disc and is used for driving the rotating disc to rotate; the first servo motor is fixedly arranged on the working bottom plate and used for providing power for the transmission mechanism;
the rotating table is arranged at the upper end of the rotating shaft; the two clamping table moving devices are respectively and symmetrically arranged on the rotating table, each clamping table moving device is correspondingly connected with one clamping table, and the clamping table moving devices are used for controlling the corresponding clamping tables to perform linear displacement; the two clamping tables are displaced on the same straight line.
2. The numerically controlled precision rotary table according to claim 1, wherein:
the transmission mechanism comprises a reduction gear set and two cambered surface cams with opposite spiral directions: the reduction gear set comprises a driving gear and two driven gears; the driving gear is mounted on an output shaft of the first servo motor, and the two driven gears are respectively and symmetrically arranged on two sides of the driving gear and are in meshing transmission with the driving gear;
the two cambered cams are arranged in the box body through bearing seats and are respectively positioned on two sides of the rotating disc, the shaft end of one cambered cam is arranged on one driven gear, and the shaft end of the other cambered cam is arranged on the other driven gear;
the rotary disc comprises rollers and a disc body, and the rollers are uniformly distributed on the periphery of the disc body and are respectively in meshed transmission with the cambered surface cams on the two sides of the disc body.
3. The numerically controlled precision rotary table according to claim 2, wherein:
the clamping table moving device comprises a second servo motor, a screw rod, a sliding rail, a sliding block and a driving block; the second servo motor, the screw rod and the slide rail are all arranged on the rotary table; an output shaft of the second servo motor is connected with the screw rod and used for driving the screw rod to rotate; the driving block is sleeved on the screw rod, and an internal thread in threaded transmission connection with the screw rod is arranged in the driving block; the sliding block is connected with the sliding rail in a sliding fit manner; the lower side of the clamping table is connected with the sliding block and the driving block.
4. A numerically controlled precision rotary table according to claim 3, wherein:
the clamping table is provided with a fixing part for fixing an object.
5. The numerically controlled precision rotary table according to claim 4, wherein:
the controller is electrically connected with the first servo motor and the second servo motor and used for receiving control signals and controlling the first servo motor and the second servo motor to rotate.
6. The numerically controlled precision rotary table according to claim 5, wherein:
the clamping table moving device further comprises an upper limit inductor and a lower limit inductor, the upper limit inductor and the lower limit inductor are arranged on one side of the screw rod and are respectively located at the head end and the tail end of the screw rod, and the upper limit inductor and the lower limit inductor are electrically connected with the controller and used for sensing the position of the driving block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110807178.7A CN113523830A (en) | 2021-07-16 | 2021-07-16 | Numerical control precision rotary worktable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110807178.7A CN113523830A (en) | 2021-07-16 | 2021-07-16 | Numerical control precision rotary worktable |
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| Publication Number | Publication Date |
|---|---|
| CN113523830A true CN113523830A (en) | 2021-10-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110807178.7A Pending CN113523830A (en) | 2021-07-16 | 2021-07-16 | Numerical control precision rotary worktable |
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| CN (1) | CN113523830A (en) |
Citations (6)
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| DE4419610A1 (en) * | 1994-06-03 | 1995-12-14 | Niles Simmons Industrieanlagen | CNC lathe for heavy machining operations |
| CN202780497U (en) * | 2012-08-01 | 2013-03-13 | 广东科杰机械自动化有限公司 | Structure of working table of machine tool |
| CN106078240A (en) * | 2016-08-10 | 2016-11-09 | 南京理工大学 | Bi-directional synchronization symmetry displacement slide unit |
| CN208662575U (en) * | 2018-07-23 | 2019-03-29 | 盐城神海机械有限公司 | A kind of valve flanges disk drilling-hole positioning device |
| CN109940412A (en) * | 2019-04-25 | 2019-06-28 | 湖北汽车工业学院 | A kind of numerical control double back revolving worktable of double globoid cam drivings |
| CN110640503A (en) * | 2019-10-30 | 2020-01-03 | 东莞市凯勒帝数控科技有限公司 | Pliers processing is with having glyptic centre gripping equipment of anti-skidding line |
-
2021
- 2021-07-16 CN CN202110807178.7A patent/CN113523830A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4419610A1 (en) * | 1994-06-03 | 1995-12-14 | Niles Simmons Industrieanlagen | CNC lathe for heavy machining operations |
| CN202780497U (en) * | 2012-08-01 | 2013-03-13 | 广东科杰机械自动化有限公司 | Structure of working table of machine tool |
| CN106078240A (en) * | 2016-08-10 | 2016-11-09 | 南京理工大学 | Bi-directional synchronization symmetry displacement slide unit |
| CN208662575U (en) * | 2018-07-23 | 2019-03-29 | 盐城神海机械有限公司 | A kind of valve flanges disk drilling-hole positioning device |
| CN109940412A (en) * | 2019-04-25 | 2019-06-28 | 湖北汽车工业学院 | A kind of numerical control double back revolving worktable of double globoid cam drivings |
| CN110640503A (en) * | 2019-10-30 | 2020-01-03 | 东莞市凯勒帝数控科技有限公司 | Pliers processing is with having glyptic centre gripping equipment of anti-skidding line |
Non-Patent Citations (2)
| Title |
|---|
| 崔陵，王筱薇: "《机电一体化概论》", 31 July 2006, 高等教育出版社 * |
| 闻邦椿: "《机电一体化技术及设计》", 30 April 2020, 机械工业出版社 * |
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Application publication date: 20211022 |