CN109719587B - Polishing mechanism with variable transmission ratio and eccentric value changed through threaded lead screw - Google Patents
Polishing mechanism with variable transmission ratio and eccentric value changed through threaded lead screw Download PDFInfo
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- CN109719587B CN109719587B CN201811537146.4A CN201811537146A CN109719587B CN 109719587 B CN109719587 B CN 109719587B CN 201811537146 A CN201811537146 A CN 201811537146A CN 109719587 B CN109719587 B CN 109719587B
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Abstract
The invention discloses a polishing mechanism with variable transmission ratio by changing an eccentric value through a threaded lead screw, which comprises a shell, wherein a guide rail sliding block mechanism is fixed at the bottom in the shell, a base is fixed on a sliding block, the top of the base is covered with a top cover, and a rotating shaft is rotatably connected between the top cover and the shell. An overrunning clutch arranged in the gear and a bearing arranged in a thrust supporting plate are fixed on the sliding table rotating shaft, and the thrust supporting plate is fixed on the base; two side surfaces of the sliding table are fixed in a counterweight flywheel through a guide rail sliding block mechanism, a threaded screw rod is fixed between the counterweight flywheel and the sliding table, the upper end of the counterweight flywheel is connected with a speed reducer, a servo motor is fixed on the speed reducer, the speed reducer is fixed on a connecting flange, and the connecting flange is fixed on the shell. Three gears are fixed on the rotating shaft, the spline nut is fixed at the bottom in the base, the gears are fixed on the spline nut, the cylinder connecting piece is fixed in the base, and the low-friction cylinder is fixed on the cylinder connecting piece. By adopting the structure, the space can be greatly saved, the weight is reduced, and the structure is suitable for precision machining.
Description
Technical Field
The invention relates to the technical field of robots, in particular to a polishing mechanism with a variable transmission ratio, wherein an eccentric value is changed through a threaded lead screw.
Background
With the technological progress and economic development, the demand of society for aspheric optical elements, especially large-caliber aspheric high-precision optical elements is increasing day by day, most of the existing polishing mechanisms have low precision and unstable dynamic performance, the requirements of ultra-precision processing of the optical elements are difficult to meet, and the polishing range and speed can not be adjusted in the polishing process. The invention carries out optimization research on a numerical control polishing mechanism of a large-caliber aspheric surface robot around the social processing requirements of high efficiency, high reliability and engineering of aspheric surface elements.
Chinese patent application No. 201410695226.8 discloses a "feed type eccentric adjustable automatic polishing device", which comprises a supporting mechanism, a feed mechanism and an eccentric adjustable polishing mechanism. Overall structure exposes outside, and a large amount of dusts that produce can produce great influence to the mechanism operation in the polishing operation process, and whole mechanism adopts three motor to drive simultaneously, and the modularization degree is low, and compact structure degree is low, and eccentric unable definite value adjustment.
The chinese patent with application number 201810233223.0 discloses "a lens burnishing machine", the device includes the lathe, the working bin, the axle bed, bistrique isotructure has pressure sensor system simultaneously, and the structure is complicated, and the polishing solution nozzle separates with the bistrique, and the integration degree is low, and workable lens radius is too little simultaneously, supports the mode of processing on the bistrique through using the thimble with the lens, can't satisfy the required precision of high accuracy optical equipment a little.
Disclosure of Invention
The invention aims to provide a polishing mechanism with an eccentric value changed through a threaded lead screw and a variable transmission ratio.
The technical scheme of the invention is as follows:
the polishing mechanism comprises a cylindrical shell, wherein two guide rail installation grooves are formed in the inner bottom wall of the shell along the longitudinal direction, a longitudinal guide rail sliding block structure is installed in each guide rail installation groove, a connecting plate is fixed on a sliding block of the longitudinal guide rail sliding block structure, a transverse guide rail sliding block structure is installed on the connecting plate, a guide rail of the longitudinal guide rail sliding block structure and a guide rail of the transverse guide rail sliding block structure are vertically arranged, two arc-shaped installation grooves are oppositely formed in the circumferential direction of the shell on the side wall of the shell along the circumferential direction of the shell, the left end of a base is arranged by penetrating through the two arc-shaped installation grooves, the bottom wall of the base is fixedly connected with the sliding block of the transverse guide rail sliding block structure, and a base top cover is fixed on the top surface of the;
a connecting flange is fixed on the shell, a screw hole for connecting the tail end of the hybrid robot is punched on the side surface of the connecting flange, a servo motor is fixed in the middle of the top surface of the connecting flange, and a rotating shaft of the servo motor is arranged in the vertical direction and is fixedly connected with an input shaft of the speed reducer coaxially;
the speed reducer pass through screw fixed connection on flange, the terminal bottom surface of speed reducer pass through the screw and be fixed with the counter weight flywheel and link to each other, inwards in the middle of the counter weight flywheel bottom surface and open along the slider slip direction of longitudinal rail slider structure has the mounting groove, the lateral wall around the mounting groove on the vertical slider of fixed mounting respectively of internal guide rail slider structure of edge mounting groove, be fixed with respectively on the lateral wall around a removal slip table with the internal guide rail of the slider sliding connection of the internal guide rail slider structure of corresponding side, removal slip table top surface in the middle of and the bottom surface of counter weight flywheel in the middle of open respectively has semi-cylindrical lead screw mounting hole, a cylindrical lead screw mounting hole is constituteed to two semi-cylindrical lead screw mounting holes, installs a screw thread lead screw along the horizontal direction in cylindrical lead screw mounting hole, be provided with the internal thread that meshes the screw thread with the screw thread on the semi-, the left end of the threaded lead screw is rotationally connected with a disc, and the disc is fixed in the left wall of the counterweight flywheel;
the middle of the bottom wall of the movable sliding table is provided with a sliding table rotating shaft along the vertical direction, the sliding table rotating shaft sequentially penetrates through a bearing arranged in a thrust supporting plate, an upper overtaking clutch and a lower overtaking clutch from top to bottom, the sliding table rotating shaft is rotationally connected with the bearing, the sliding table rotating shaft is fixedly connected with the upper overtaking clutch and the lower overtaking clutch respectively, the top surface of the bearing is tightly pressed and arranged below a shaft shoulder of the sliding table rotating shaft, the thrust supporting plate is fixedly connected with a base through screws, the bottom surface of the bearing is separated from the upper overtaking clutch through a sleeve, a first gear is fixed on the outer ring of the lower overtaking clutch, a second gear is fixed on the outer ring of the upper overtaking clutch, the upper overtaking clutch is separated from the lower overtaking clutch through a sleeve arranged on the sliding table rotating shaft of the movable sliding table, and the lower overtaking clutch is axially fixed through the sleeve arranged on the base, when the connection direction of the lower overrunning clutch and the first gear is opposite to the connection direction of the upper overrunning clutch and the second gear so as to enable the sliding table rotating shaft of the movable sliding table to rotate, the state that the upper overrunning clutch and the second gear are connected or disconnected is opposite to the state that the lower overrunning clutch and the first gear are connected or disconnected;
a rotating shaft is arranged between the bottom plate of the base and the top cover of the base along the longitudinal direction of the base, the upper end and the lower end of the rotating shaft are respectively connected with the bottom plate of the base and the top cover of the base through bearings in a rotating manner, the lower end and the middle part of the rotating shaft are respectively connected with a third gear and a fourth gear through keys, the third gear and the fourth gear are separated through a shaft shoulder on the rotating shaft, the third gear is axially positioned through a boss arranged on the base, the fifth gear is fixedly connected above the top surface of the fourth gear through a screw, the fourth gear can be driven to rotate and transmit backwards when the second gear is meshed with the fifth gear, and the second gear and the first gear are respectively meshed with the fifth gear and the third gear for transmission;
the sixth gear is meshed with the fourth gear, the sixth gear is fixed on a spline nut of a rotary ball spline through a long screw, the spline nut is fixed on a base through a flange outer ring, the spline shaft of the rotary ball spline arranged in the vertical direction is meshed with the spline nut, a base connecting piece is fixed on the base through a screw, the top surface of the base connecting piece is connected with a low-friction cylinder through a boss, and an output shaft of the low-friction cylinder is fixedly connected with the upper end of the spline shaft.
The invention has the advantages that: the polishing mechanism adjusts the eccentric distance between the axis of the movable sliding table and the axis of the motor through screwing the threaded lead screw, so that the eccentric rapid adjustment of the whole polishing process can be realized. The whole mechanism is driven by adopting gear engagement, and the space is more fully utilized. The mechanism adopts an overrunning clutch, the work and disconnection of different transmission lines are realized through the positive rotation and the negative rotation of a motor and the positive and negative installation of the overrunning clutch on a shaft, the number of teeth of gears on the transmission lines is distributed according to actual needs, and the transmission with different transmission ratios can be realized without disassembling and changing the structure. The design is simple and reliable, simultaneously improves work efficiency by a wide margin, is fit for the actual production and uses.
The outside balancing weight that can dismantle can be added to counter weight flywheel both sides, and it places the lead pig structure to design cavity in the base, and through dynamic balance static balance calculation place reasonable weight, make polishing mechanism bulk motion steady, guarantee high machining precision.
Drawings
Fig. 1 is an exploded schematic view of the internal structure of a polishing mechanism according to the present embodiment;
FIG. 2 is a schematic bottom view of a top cover of the polishing mechanism according to this embodiment;
FIG. 3 is an exploded view of the drive mechanism of the polishing mechanism according to this embodiment;
FIG. 4 is a schematic top view of the polishing mechanism housing and cross-guide assembly according to this embodiment;
FIG. 5 is a schematic view of the polishing mechanism of this embodiment assembled with the housing removed and the top cover and attachment flanges removed;
FIG. 6 is an assembly view of an eccentric adjustment structure of the polishing mechanism according to the present embodiment;
fig. 7 is a schematic sectional view of an eccentric adjustment structure of the polishing mechanism according to this embodiment.
Fig. 8 is an overall assembly schematic diagram of the polishing mechanism according to the present embodiment.
Detailed Description
In order to facilitate an understanding of the invention, the invention is described in detail below with reference to the accompanying drawings and specific mounting operation. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The polishing mechanism comprises a cylindrical shell 27, two guide rail installation grooves are longitudinally formed in the inner bottom wall of the shell 27, a longitudinal guide rail sliding block structure is installed in the guide rail installation grooves, a connecting plate 15 is fixed on a sliding block of the longitudinal guide rail sliding block structure, a transverse guide rail sliding block structure is installed on the connecting plate 15, a guide rail 14 of the longitudinal guide rail sliding block structure and a guide rail of the transverse guide rail sliding block structure are vertically arranged, two arc-shaped installation grooves are oppositely formed in the side wall of the shell 27 along the circumferential direction of the shell, the left end of a base 26 penetrates through the two arc-shaped installation grooves, and the bottom wall of the base 26 is fixedly connected with a sliding block of the transverse guide rail sliding block structure. A base top cover 28 is fixed to the top surface of the base 26 where the housing 27 is exposed.
A connecting flange 25 is fixed on the housing 27, and screw holes for connecting the tail end of the hybrid robot are punched on the side surface of the connecting flange 25. The robot can take the polishing mechanism to move in a certain space, a servo motor 1 is fixed in the middle of the top surface of the connecting flange 25, and a rotating shaft of the servo motor 1 is arranged in the vertical direction and is fixedly connected with an input shaft of the speed reducer 2 coaxially.
The speed reducer adopts a precision planetary gear speed reducer, and has the advantages of small volume, light weight, high bearing capacity, long service life, stable operation, low noise, large output torque, large speed ratio, high efficiency and safe performance. Has the unique characteristics of power splitting and multi-tooth meshing.
The reduction gear 2 pass through screw fixed connection on flange 25, the terminal bottom surface of reduction gear 2 pass through the screw and link to each other with counter weight flywheel 3 is fixed, inwards and open along the slider slip direction of longitudinal rail slider structure in the middle of counter weight flywheel 3 bottom surface has the mounting groove, the mounting groove around on the lateral wall along the vertical fixed mounting respectively of mounting groove have the slider of inside guide rail slider structure, be fixed with respectively on the lateral wall around a removal slip table 5 with the inside guide rail of the inside guide rail slider structure sliding connection of corresponding side, removal slip table 5 top surface in the middle of and counter weight flywheel 3 bottom surface in the middle of open respectively semi-cylindrical lead screw mounting hole, a cylindrical lead screw mounting hole is constituteed to two semi-cylindrical lead screw mounting holes, install a screw thread lead screw 4 along the horizontal direction in the cylindrical lead screw mounting hole, the inner wall of the semi-cylindrical lead screw mounting hole of the movable sliding table 5 is provided with an internal thread meshed with the threaded lead screw 4, the left end of the threaded lead screw 4 is rotationally connected with a disc 29, and the disc 29 is fixed in the left wall of the counterweight flywheel 3. Preferably, in order to facilitate the rotation of the threaded screw rod 4, a hexagon socket is formed in the middle of the left end of the threaded screw rod 4.
Remove 5 diapire of slip table in the middle of be provided with slip table pivot 10 along vertical direction, when initial position, slip table pivot 10 the axis and the coincidence of motor axis, eccentric distance is zero, twists the interior hexagonal hole of screw lead screw head through the instrument for the screw lead screw rotates, removes slip table 5 and is connected with screw lead screw 4 through the screw thread at center, because of screw lead screw 4 rotates through disc 29 and connects unable slip in counter weight flywheel 3, so remove the slip table and will remove corresponding distance.
The slip table pivot 10 from last to passing in proper order down and installing bearing 6 and the clutch 8 that surpasss and the clutch 11 that surpasss down in thrust layer board 7, slip table pivot 10 rotate with bearing 6 and link to each other, slip table pivot 10 with surpass clutch 8 and the clutch 11 that surpasss down and fixedly link to each other respectively. Bearing 6 top surface compresses tightly and sets up under the shaft shoulder of slip table pivot 10, thrust layer board 7 pass through screw fixed connection with base 26, bearing 6's bottom surface with go up the clutch of overtaking and separate through the sleeve, first gear 12 is fixed the lower clutch 11 outer lane of overtaking on, second gear 9 is fixed go up the clutch 8 outer lane of overtaking on, go up the clutch 8 of overtaking and separate with the lower clutch 11 of overtaking through installing the sleeve that moves the slip table pivot 10 of slip table, the lower clutch 11 of overtaking realizes axial fixity through installing the sleeve on the base. When the connection direction of the lower overrunning clutch 11 and the first gear 12 is opposite to the connection direction of the upper overrunning clutch 8 and the second gear 9 so as to rotate the sliding table rotating shaft 10 of the moving sliding table, the state of connection or disconnection of the upper overrunning clutch 8 and the second gear 9 is opposite to the state of connection or disconnection of the lower overrunning clutch 11 and the first gear 12.
Preferably, the upper overrunning clutch and the lower overrunning clutch are wedge type overrunning clutches (commercially available), the wedge type overrunning clutches are devices having a self-clutch function by changing the rotation directions of the driving part and the driven part, and the wedge type upper overrunning clutch and the wedge type lower overrunning clutch are connected with the sliding table rotating shaft 10 through keys. The first gear 12 is connected with the wedge type lower overrunning clutch through wedges arranged in grooves opposite to the wedge type lower overrunning clutch, and the second gear 9 is connected with the wedge type upper overrunning clutch through wedges arranged in grooves opposite to the wedge type upper overrunning clutch. When the direction in which the wedge type lower overrunning clutch is coupled to the first gear 12 is opposite to the direction in which the wedge type upper overrunning clutch is coupled to the first gear 12 so that the moving slip table shaft rotates, the state in which the wedge type upper overrunning clutch is coupled to or decoupled from the first gear is opposite to the state in which the wedge type lower overrunning clutch is coupled to or decoupled from the first gear 12. Thereby leading the two transmission lines transmitted by the upper second gear 9 and the lower first gear 12 to work or be disconnected, and realizing the variable transmission ratio of the mechanism. Of course, the overrunning clutch can also adopt a ball type clutch and the like.
The second gear and the first gear are respectively meshed with the fifth gear 18 and the third gear 16 for transmission.
A rotating shaft 19 is arranged between the bottom plate of the base 26 and the base top cover 28 along the longitudinal direction of the base, and the upper end and the lower end of the rotating shaft 19 are respectively connected with the bottom plate of the base and the base top cover through bearings in a rotating manner. The lower extreme and the middle part of pivot have third gear 16, fourth gear 17 through the key connection respectively, third gear 16 and fourth gear 17 between separate through the epaxial shoulder of pivot 19, third gear 16 carry out axial positioning through the boss that sets up on the base, fifth gear 18 passes through screw fixed connection in fourth gear 17 top surface top, can drive fourth gear 17 simultaneously and rotate and the back transmission when second gear 9 meshes with fifth gear 18, second gear and first gear respectively with fifth gear 18 and third gear 16 meshing transmission.
A sixth gear 22 is engaged with the fourth gear 17, and the sixth gear 22 is fixed to a spline nut 23 of a rotary ball spline by a long screw. The spline nut 23 is fixed on the base 26 through the outer ring of the flange. A spline shaft 24 of a rotary ball spline provided in a vertical direction is engaged with the spline female 23. The working principle of the rotating ball spline is that the spline shaft 24 rotates by rotating the spline female 23 meshed with the spline shaft 24, the tail end of the spline shaft 24 is used for connecting an actuating element, and further the actuating element such as a polishing disc connected with the tail end of the spline shaft 24 performs rotating motion. The device is suitable for high-speed movement, smooth in operation, low in working noise, simple and convenient to install and space-saving.
The preferred counterweight flywheel 3 of the invention is in a semi-disc shape, has a simple structure, and can be additionally provided with a counterweight according to the requirement to meet the actual production requirement.
The working process of the polishing mechanism of the invention is as follows: the whole polishing mechanism is driven by a servo motor, the servo motor outputs torque, the torque is transmitted to the counterweight flywheel through a speed reducer, and the threaded screw rod, the movable sliding table and the counterweight flywheel are fixedly connected, so that synchronous rotation can be realized. The shaft of the movable sliding table and the output shaft of the motor are coaxial at the initial position, the eccentric value is zero, the eccentric distance is adjustable by screwing the threaded lead screw 4, the thrust supporting plate 7 is installed on the base 26, the upper end of the shaft of the movable sliding table pushes the thrust supporting plate 7 through a bearing, and then the whole base and the tail end polishing head are driven to realize plane translation through a cross guide rail and a guide rail sliding block which are installed on the inner bottom surface of the shell 27. When the motor rotates forwards, the second gear is disconnected under the action of the overrunning clutch, torque passes through the speed reducer, the counterweight flywheel, the threaded lead screw and the movable sliding table, the first gear 12, the third gear 16, the fourth gear 17 and the key are transmitted to the rotating shaft 19, the fourth gear and the sixth gear are in meshed transmission, the sixth gear drives the tail spline to rotate, so that transmission of one transmission ratio is realized, when the motor rotates backwards, the first gear is disconnected under the action of the overrunning clutch, meshing rotation of the second gear transmits the torque to the lower stage, the spline is driven to rotate, and transmission of another transmission ratio is realized.
In the actual installation use process, the motor reducer is connected to the connecting flange firstly, the counterweight flywheel is installed at the tail end of the reducer from bottom to top through screws, the movable sliding table is fixedly connected with the counterweight flywheel through the guide rail sliding blocks on two sides, the threaded screw rod is installed between the movable sliding table and the counterweight flywheel, the eccentric distance is adjusted through adjusting the threaded screw rod, the base penetrates through the shell and is placed on the guide rail sliding blocks, the assembly of the rotating shaft in the base is completed, the first gear and the second gear are placed well, the motor reducer is installed, the connecting flange, the counterweight flywheel and the adjusting screw rod are connected to the connecting flange, the movable sliding table penetrates into the first gear and the second gear after being assembled as a whole, the connecting flange is connected to the shell, and finally.
The technical features of the above-described embodiments may be arbitrarily combined, and for the sake of brief description, all possible combinations of the technical features in the above-described embodiments are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
Although the preferred embodiments of the present invention have been described with reference to the accompanying drawings, the present invention is not limited to the specific embodiments, which are only illustrative and not restrictive, and those skilled in the art can make various changes and modifications within the spirit and scope of the present invention without departing from the spirit and scope of the appended claims. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (5)
1. Through the changeable polishing mechanism of screw thread lead screw change eccentric value and drive ratio, including cylindric shell (27), its characterized in that: two guide rail mounting grooves are formed in the bottom wall of the shell along the longitudinal direction, a longitudinal guide rail sliding block structure is mounted in the guide rail mounting grooves, a connecting plate (15) is fixed on a sliding block of the longitudinal guide rail sliding block structure, a transverse guide rail sliding block structure is mounted on the connecting plate, a guide rail (14) of the longitudinal guide rail sliding block structure and a guide rail of the transverse guide rail sliding block structure are vertically arranged, two arc-shaped mounting grooves are oppositely formed in the side wall of the shell (27) along the circumferential direction of the shell, the left end of a base (26) penetrates through the two arc-shaped mounting grooves to be arranged, the bottom wall of the base is fixedly connected with the sliding block of the transverse guide rail sliding block structure, and a base top cover (28) is fixed on the top surface;
a connecting flange (25) is fixed on the shell, a screw hole for connecting the tail end of the hybrid robot is arranged on the side surface of the connecting flange, a servo motor (1) is fixed in the middle of the top surface of the connecting flange, and a rotating shaft of the servo motor is arranged in the vertical direction and is fixedly connected with an input shaft of a speed reducer (2) coaxially;
reduction gear (2) through screw fixed connection on flange (25), reduction gear terminal underrun screw and counter weight flywheel (3) fixed connection the middle of the counter weight flywheel bottom surface inwards just open along the slider slip direction of longitudinal rail slider structure has the mounting groove around on the lateral wall along the vertical fixed mounting respectively of mounting groove have the slider of inside guide rail slider structure, be fixed with the inside guide rail of the inside guide rail slider structure with corresponding side respectively on the lateral wall around a removal slip table (5) the inside guide rail of slider sliding connection of the inside guide rail slider structure, removal slip table top surface in the middle of and the bottom surface of counter weight flywheel in the middle of open respectively semi-cylindrical lead screw mounting hole, cylindrical lead screw mounting hole is constituteed to two semi-cylindrical lead screw mounting holes, installs a screw thread lead screw (4) along the horizontal direction in cylindrical lead screw mounting hole, the inner wall of a semi-cylindrical lead screw mounting hole of the movable sliding table is provided with an internal thread meshed with the threaded lead screw, the left end of the threaded lead screw is rotationally connected with a disc (29), and the disc is fixed in the left wall of the counterweight flywheel;
a sliding table rotating shaft (10) is arranged in the middle of the bottom wall of the movable sliding table (5) along the vertical direction, the sliding table rotating shaft sequentially penetrates through a bearing (6) arranged in a thrust supporting plate (7), an upper overtaking clutch (8) and a lower overtaking clutch (11) from top to bottom, the sliding table rotating shaft is connected with the bearing in a rotating mode, the sliding table rotating shaft is fixedly connected with the upper overtaking clutch and the lower overtaking clutch respectively, the top surface of the bearing is pressed and arranged below the shaft shoulder of the sliding table rotating shaft, the thrust supporting plate is fixedly connected with the base through screws, the bottom surface of the bearing is separated from the upper overtaking clutch through a sleeve, a first gear (12) is fixed on the lower overtaking clutch outer ring, a second gear (9) is fixed on the upper overtaking clutch outer ring, and the upper overtaking clutch is separated from the lower overtaking clutch through a sleeve arranged on the sliding table rotating shaft of the movable sliding table, the lower overrunning clutch is axially fixed through a sleeve arranged on the base, the connecting direction of the lower overrunning clutch (11) and the first gear (12) is opposite to the connecting direction of the upper overrunning clutch (8) and the second gear (9) so that when a sliding table rotating shaft of the moving sliding table rotates, the state of connection or disconnection of the upper overrunning clutch and the second gear is opposite to the state of connection or disconnection of the lower overrunning clutch and the first gear;
a rotating shaft (19) is arranged between the bottom plate of the base and the top cover of the base along the longitudinal direction of the base, the upper end and the lower end of the rotating shaft are respectively rotatably connected with the bottom plate of the base and the top cover of the base through bearings, the lower end and the middle part of the rotating shaft are respectively connected with a third gear (16) and a fourth gear (17) through keys, the third gear and the fourth gear are separated through a shaft shoulder on the rotating shaft, the third gear is axially positioned through a boss arranged on the base, the fifth gear is fixedly connected above the top surface of the fourth gear through a screw, the fourth gear is driven to rotate and transmit backwards when the second gear (9) is meshed with the fifth gear (18), and the second gear and the first gear are respectively meshed with the fifth gear and the third gear for transmission;
sixth gear (22) with fourth gear engagement, the sixth gear passes through the long screw fixation on the spline female (23) of rotatory ball spline, the spline female passes through the flange outer lane to be fixed on the base, along the spline shaft (24) of the rotatory ball spline that vertical direction set up with the spline female meshing, base connecting piece (21) pass through the fix with screw on the base, the base connecting piece top surface passes through the boss and links to each other with low friction cylinder (20), the output shaft of low friction cylinder with the upper end fixed connection of spline shaft (24).
2. The variable eccentricity and variable ratio polishing mechanism of claim 1, wherein the threaded lead screw is used to change the eccentricity value, and the transmission ratio is variable: the speed reducer adopts a precise planetary gear speed reducer.
3. The polishing mechanism with variable eccentricity value and transmission ratio by a threaded lead screw according to claim 1 or 2, wherein: and the middle of the left end of the threaded lead screw is provided with an inner hexagonal hole.
4. The variable eccentricity and variable ratio polishing mechanism of claim 3, wherein the threaded lead screw is used to change the eccentricity value, and the transmission ratio is variable: the counterweight flywheel is in a semi-disc shape.
5. The variable eccentricity and variable ratio polishing mechanism of claim 4, wherein the threaded lead screw is used to change the eccentricity value, and the transmission ratio is variable, and the mechanism comprises: the upper overrunning clutch and the lower overrunning clutch are both wedge type overrunning clutches, the wedge type upper overrunning clutch and the wedge type lower overrunning clutch are connected with a rotating shaft of the movable sliding table through keys, the first gear and the wedge type lower overrunning clutch are connected through wedge blocks arranged in grooves which are oppositely arranged, the second gear and the wedge type upper overrunning clutch are also connected through wedge blocks arranged in grooves which are oppositely arranged, the connection direction of the wedge type lower overrunning clutch and the first gear is opposite to the connection direction of the wedge type upper overrunning clutch and the first gear so that the rotating shaft of the movable sliding table rotates, and the connection or disconnection state of the wedge type upper overrunning clutch and the first gear is opposite to the connection or disconnection state of the wedge type lower overrunning clutch and the first gear.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811537146.4A CN109719587B (en) | 2018-12-14 | 2018-12-14 | Polishing mechanism with variable transmission ratio and eccentric value changed through threaded lead screw |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811537146.4A CN109719587B (en) | 2018-12-14 | 2018-12-14 | Polishing mechanism with variable transmission ratio and eccentric value changed through threaded lead screw |
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| CN109719587A CN109719587A (en) | 2019-05-07 |
| CN109719587B true CN109719587B (en) | 2020-07-28 |
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| CN112157526A (en) * | 2020-09-28 | 2021-01-01 | 中国科学院光电技术研究所 | Flat-rotating polishing device |
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| CN2406770Y (en) * | 1999-12-13 | 2000-11-22 | 黄计高 | Clutch for polish wheel of polisher |
| CN102713068A (en) * | 2009-12-03 | 2012-10-03 | 塞母布雷有限公司 | Apparatus for the tooling of a workpiece |
| CN103286661A (en) * | 2013-05-06 | 2013-09-11 | 广州市敏嘉制造技术有限公司 | Grinder for grinding cycloidal gear |
| CN106736880A (en) * | 2016-12-28 | 2017-05-31 | 沪东重机有限公司 | For the milling tool and method of combustion gas control block inverted cone bottom of chamber sealing surface |
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