CN109664178B - Polishing mechanism with variable transmission ratio and eccentric value changed through eccentric adjusting block - Google Patents
Polishing mechanism with variable transmission ratio and eccentric value changed through eccentric adjusting block Download PDFInfo
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- CN109664178B CN109664178B CN201811537155.3A CN201811537155A CN109664178B CN 109664178 B CN109664178 B CN 109664178B CN 201811537155 A CN201811537155 A CN 201811537155A CN 109664178 B CN109664178 B CN 109664178B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B13/00—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/02—Frames; Beds; Carriages
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/04—Headstocks; Working-spindles; Features relating thereto
- B24B41/042—Balancing mechanisms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/10—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces
- B24B47/12—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces by mechanical gearing or electric power
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B57/00—Devices for feeding, applying, grading or recovering grinding, polishing or lapping agents
- B24B57/02—Devices for feeding, applying, grading or recovering grinding, polishing or lapping agents for feeding of fluid, sprayed, pulverised, or liquefied grinding, polishing or lapping agents
Abstract
The invention discloses a polishing mechanism with variable transmission ratio and eccentric value changed by an eccentric adjusting block, 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, a top cover is fixed at the top of the base, a first rotating shaft, a second rotating shaft and a third rotating shaft are rotatably connected between the top cover and the shell, the upper end surface of a first belt wheel is connected with a lower workbench, the eccentric adjusting block is fixed on the side surfaces of the lower workbench and an upper workbench, the upper end surface of the upper workbench is connected with a speed reducer, a servo motor is fixed on the speed reducer, an end cover is fixed on the top surface of the shell, a connecting flange is fixed on the, the overrunning clutch comprises an overrunning clutch body and gears, two gears are fixed on a second rotating shaft, two gears are fixed on a third rotating shaft from bottom to top, a ball spline nut is fixed at the bottom in a base, a belt wheel and the gears are fixed on the ball spline nut, a cylinder connecting piece is fixed in the base, and a low-friction cylinder is fixed on the cylinder connecting piece. Adopt this structure can improve work efficiency by a wide margin, be fit for the actual production and use.
Description
Technical Field
The invention relates to the technical field of robots, in particular to a polishing mechanism with an eccentric value changed by an eccentric adjusting block and a variable transmission ratio.
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 by an eccentric adjusting block and a variable transmission ratio.
The technical scheme of the invention is as follows:
the polishing mechanism with variable transmission ratio and eccentric value changed by the eccentric adjusting block comprises a cylindrical shell, the top of the shell is provided with a shell top cover, the inner bottom wall of the shell is longitudinally provided with two guide rail installation grooves, a longitudinal guide rail sliding block structure is arranged in the guide rail mounting 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 arranged 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 arranged vertically, the side wall of the shell is oppositely provided with two arc-shaped mounting grooves along the circumferential direction of the shell, the left end of the base penetrates through the two arc-shaped mounting grooves to be placed, the bottom wall of the base is fixedly connected with a sliding block of a transverse guide rail sliding block structure, and a base top cover is fixed on the top surface of the base, which is exposed out of the shell part;
an L-shaped connecting flange is fixed on the top cover of the shell, a central hole for connecting the tail end of the hybrid robot is formed in the vertical surface of the connecting flange, a servo motor is fixed in the middle of the horizontal plane of the connecting flange, and a rotating shaft of the servo motor is arranged in the vertical direction and is fixedly connected with the input shaft of the speed reducer coaxially;
the speed reducer is fixedly connected with the top cover of the shell through screws, the bottom surface of the tail end of the speed reducer is fixedly connected with the counterweight flywheel through screws, the bottom end of the counterweight flywheel is fixed in the middle of the upper workbench, the lower workbench and the upper workbench can be in relative sliding connection through a dovetail groove structure, the vertical section of an L-shaped eccentric adjusting block is closely attached to the side wall of the upper workbench, the end part of the horizontal section of the L-shaped eccentric adjusting block is closely attached to the side wall of the lower workbench, so that the upper workbench and the lower workbench are staggered by a set distance, the horizontal section of the L-shaped eccentric adjusting block is fixedly connected with the lower workbench, and the vertical section of the L-shaped eccentric adjusting block is fixedly connected with the upper workbench;
a top boss of a first belt wheel is arranged in a groove in the middle of the bottom of the lower workbench and is fixedly connected with the groove through a screw, and the lower end of a wheel shaft of the first belt wheel is arranged on the base through a bearing;
the first belt wheel is connected with the second belt wheel through a first synchronous toothed belt;
a first rotating shaft, a second rotating shaft and a third rotating shaft are sequentially and transversely installed between the bottom plate of the base and the top cover of the base at intervals in the longitudinal direction of the base in a rotating mode, and the upper end and the lower end of the first rotating shaft, the second rotating shaft and the third rotating shaft are respectively connected with the bottom plate of the base and the top cover of the base in a rotating mode through bearings;
the first rotating shaft is sequentially fixed with a second belt wheel, a lower overtaking clutch and an upper overtaking clutch from bottom to top, the first gear is fixed on an outer ring of the upper overtaking clutch, the upper overtaking clutch is separated from the lower overtaking clutch through a sleeve arranged on the first rotating shaft, the connection direction of the lower overtaking clutch and the third belt wheel is opposite to the connection direction of the upper overtaking clutch and the first gear so that when the first rotating shaft rotates, the connection or disconnection state of the upper overtaking clutch and the first gear is opposite to the connection or disconnection state of the lower overtaking clutch and the third belt wheel.
The lower part and the upper part of the second rotating shaft are respectively connected with a third gear and a second gear through keys, a bearing at the bottom of the second rotating shaft is separated from the third gear through a shaft sleeve arranged on the second rotating shaft, the third gear and the second gear are separated through a shaft sleeve arranged on the second rotating shaft, and the first gear is meshed with the second gear;
the fourth gear is arranged on a shaft shoulder at the lower end of the third rotating shaft through a key, the fourth gear is meshed with the third gear, the upper end surface of the fourth gear is separated from a fifth gear arranged at the upper end of the third rotating shaft through a shaft sleeve, and the fifth gear is connected with the third rotating shaft through a key;
a sixth gear is meshed with the fifth gear, and a fourth belt wheel is connected with the third belt wheel through a second synchronous toothed belt;
the sixth gear and the fourth belt wheel are fixed on a spline nut of the rotary ball spline through long screws, the spline nut is fixed on a base through a flange outer ring, a 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 screws, the top surface of the base connecting piece is connected with a low-friction air cylinder through a boss, and an output shaft of the low-friction air cylinder is fixedly connected with the upper end of the spline shaft, so that an actuating element connected with the tail end of the spline shaft can move up and down in a certain stroke.
The invention has the advantages that: the eccentric distance of workstation about polishing mechanism passes through the eccentric regulating block adjustment of difference, can realize whole polishing process's eccentric definite value, adjustable, and the design of eccentric regulating block is outside simultaneously, convenient to detach changes. The tensioning mechanism of synchronous tooth type area designs for pushing up the tensioning block to suitable position through the jackscrew, screws up fixedly through two nuts, and jackscrew and nut are all adjustable at any time from the outside, and space utilization is more reasonable simultaneously. 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 gear and the number of teeth of a belt wheel on the transmission lines are distributed according to actual requirements, 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 polishing solution injection part is provided with a rotary joint, the diameter of an injection polishing solution inlet is increased, the cylinder is easy to replace after being abraded, and the cylinder does not need to be disassembled completely to replace a steel pipe inside a cylinder rod of the cylinder.
Both the counterweight flywheel and the base are provided with hollow lead block placing structures, and reasonable weight is placed through dynamic balance and static balance calculation, so that the polishing mechanism is stable in overall motion, and high processing precision is guaranteed.
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 a schematic view of the assembly of the base and the cross-shaped guide of the polishing mechanism according to this embodiment;
FIG. 4 is an exploded view of the drive mechanism of the polishing mechanism according to this embodiment;
FIG. 5 is a schematic top view of the polishing mechanism housing and cross-guide assembly according to this embodiment;
FIG. 6 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. 7 is an assembly view showing an eccentric adjustment structure of the polishing mechanism according to the present 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 35, a shell top cover 33 is installed at the top of the shell, two guide rail installation grooves are longitudinally formed in the bottom wall of the shell, a longitudinal guide rail sliding block structure is installed in the guide rail installation grooves, a connecting plate 11 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 11, a guide rail of the longitudinal guide rail sliding block structure and a guide rail 10 of the transverse guide rail sliding block structure are vertically arranged, two arc installation grooves are oppositely formed in the circumferential direction of the shell on the side wall of the shell 35, the left end of a base 34 is arranged in a mode of penetrating through the two arc installation grooves, and the bottom wall of the base 34 is fixedly connected with a sliding block 9 of the transverse guide rail sliding block structure. A base top cover 36 is fixed to the top surface of the base 34 where the housing 35 is exposed.
An L-shaped connecting flange 32 is fixed on the shell top cover 33, and a central hole for connecting the tail end of the parallel-serial robot is formed in the vertical surface of the connecting flange 32. The robot can take the polishing mechanism to move in a certain space, a servo motor 1 is fixed in the middle of the horizontal plane of the connecting flange 32, and a rotating shaft of the servo motor 1 is arranged along 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 top boss of the first belt wheel 7 is arranged in a groove in the middle of the bottom of the lower workbench 6 and fixedly connected with the groove through a screw, and the lower end of the wheel shaft of the first belt wheel 7 is arranged on the base 34 through a bearing.
The first belt pulley 7 is connected with a second belt pulley 17 through a first synchronous cog belt 8.
Install first pivot 12, second pivot 18 and third pivot 21 along the vertical interval rotation of controlling in proper order of base between base 34's bottom plate and the base top cap, the upper and lower both ends of first pivot 12, second pivot 18 and third pivot 21 be connected with the bottom plate and the base top cap rotation of base through the bearing respectively.
A second belt wheel 17, a lower overtaking clutch 14-1 and an upper overtaking clutch 14-2 are sequentially fixed on the first rotating shaft 12 from bottom to top, a third belt wheel 16 is fixed on an outer ring of the lower overtaking clutch 14-1, a first gear 15 is fixed on an outer ring of the upper overtaking clutch 14-2, and the upper overtaking clutch 14-2 is separated from the lower overtaking clutch 14-1 through a sleeve arranged on the first rotating shaft 12. When the connection direction of the lower overrunning clutch and the third pulley 16 is opposite to the connection direction of the upper overrunning clutch and the first gear 15 so as to rotate the first rotating shaft 12, the state of engagement or disengagement of the upper overrunning clutch and the first gear is opposite to the state of engagement or disengagement of the lower overrunning clutch and the third pulley 16.
Preferably, both the upper overrunning clutch (commercially available) and the lower overrunning clutch are wedge type overrunning clutches, which are devices having a self-clutch function by changing the rotation directions of the driving and driven parts, and are connected to the first rotating shaft 12 through keys. The third belt wheel 16 is connected with the wedge type lower overrunning clutch through a wedge block 13 arranged in a groove opposite to the wedge type lower overrunning clutch, and the first gear 15 is connected with the wedge type upper overrunning clutch through a wedge block 13 arranged in a groove opposite to the wedge type upper overrunning clutch. When the direction in which the wedge type lower overrunning clutch and the third pulley 16 are connected is opposite to the direction in which the wedge type upper overrunning clutch and the first gear 15 are connected to rotate the first rotating shaft 12, the state in which the wedge type upper overrunning clutch and the first gear are engaged or disengaged is opposite to the state in which the wedge type lower overrunning clutch and the third pulley 16 are engaged or disengaged. Therefore, two transmission lines transmitted by the upper first gear 15 and the lower third belt wheel 16 work or are disconnected, and the variable transmission ratio of the mechanism is realized. Of course, the overrunning clutch can also adopt a ball type clutch and the like.
The lower part and the upper part of the second rotating shaft are respectively connected with a third gear 20 and a second gear 19 through keys, a bearing at the bottom of the second rotating shaft is separated from the third gear 20 through a shaft sleeve arranged on the second rotating shaft, and the third gear 20 and the second gear 19 are separated through a shaft sleeve arranged on the second rotating shaft. The first gear 15 and the second gear 19 are meshed and matched.
The fourth gear 22 is mounted on a shaft shoulder at the lower end of the third rotating shaft 21 through a key, the fourth gear 22 is meshed with the third gear 20, the upper end face of the fourth gear 22 is separated from a fifth gear 24 mounted at the upper end of the third rotating shaft 21 through a shaft sleeve 23, and the fifth gear 24 is connected with the third rotating shaft 21 through a key.
A sixth gear 25 is engaged with the fifth gear 24, and a fourth pulley 26 and the third pulley 16 are connected by a second timing belt 27.
The sixth gear 25 and the fourth pulley 26 are fixed to a spline nut 31 of a rotary ball spline by a long screw. The spline nut 31 is fixed on the base 34 through the flange outer ring. A spline shaft 30 of a rotary ball spline provided in a vertical direction is engaged with the spline female 31. The working principle of the rotating ball spline is that the spline shaft 30 rotates by rotating the spline female 31 engaged with the spline shaft 30, the tail end of the spline shaft 30 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 30 rotates. 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 semicircular disc shape, and the lead block is placed in the hollow space, so that the structure is simple, and the space is saved.
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 the speed reduction of the speed reducer, and the upper workbench is fixedly connected with the counterweight flywheel and synchronously rotates. The first belt wheel 7 is fixedly connected in a central groove of the lower workbench 6, fixed-value eccentricity is realized through different eccentric adjusting blocks 5, the first belt wheel 7 is installed on the base 34, and the whole base and the tail end polishing head realize plane translation through a cross guide rail and a guide rail sliding block which are installed on the bottom surface of the shell 35. The first belt wheel 7 realizes the transmission of a set transmission ratio through a synchronous belt, a belt wheel and a gear on the first rotating shaft 12 are respectively provided with an overrunning clutch in a positive and negative mode, when a motor rotates positively, the torque passes through a speed reducer, a counterweight flywheel, an upper working table and a lower working table, the first belt wheel 7, the first synchronous toothed belt 8, the second belt wheel 17 and keys are transmitted to the first rotating shaft 12, the first gear 15 is disconnected under the action of the overrunning clutch, the third belt wheel 16 is meshed to rotate, the torque is transmitted to the tail end belt wheel through the second synchronous belt 27, the tail end spline rotates and realizes the transmission of one transmission ratio, when the motor rotates reversely, the belt wheel is disconnected under the action of the overrunning clutch, the gear meshed rotation transmits the torque to the lower stage, the spline rotates to drive, and the transmission of the other transmission.
In the actual installation and use process, the counterweight flywheel and the upper workbench are installed at the tail end of the speed reducer through screws from bottom to top, the lower workbench and the first belt wheel 7 are assembled from bottom to top through screws, and finally the two mechanisms are fixedly connected through the eccentric adjusting block. The shaft, the gear and the belt wheel in the base are placed into the shell after the assembly, the base is fixedly connected with the guide rail sliding block, and finally the preassembled synchronous toothed belt, the assembled belt wheel, the upper and lower working tables, the counterweight flywheel, the speed reducer and the servo motor are placed on the base.
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 (4)
1. Through the changeable polishing mechanism of eccentric value of eccentric regulating block change and drive ratio, its characterized in that: comprises a cylindrical shell (35), a shell top cover (33) is arranged at the top of the shell, two guide rail installation grooves are longitudinally arranged on the inner bottom wall of the shell, a longitudinal guide rail sliding block structure is arranged in the guide rail installation grooves, a connecting plate (11) is fixed on the sliding block of the longitudinal guide rail sliding block structure, a transverse guide rail sliding block structure is arranged on the connecting plate, the guide rail of the longitudinal guide rail sliding block structure and the guide rail (10) of the transverse guide rail sliding block structure are arranged vertically, two arc-shaped mounting grooves are oppositely formed in the side wall of the shell (35) along the circumferential direction of the shell, the left end of the base (34) penetrates through the two arc-shaped mounting grooves to be placed, the bottom wall of the base (34) is fixedly connected with the sliding block (9) of the transverse guide rail sliding block structure, a base top cover (36) is fixed on the top surface of the part of the base exposed out of the shell (35);
an L-shaped connecting flange (32) is fixed on the top cover (33) of the shell, a central hole for connecting the tail end of the hybrid robot is formed in the vertical surface of the connecting flange, a servo motor (1) is fixed in the middle of the horizontal plane of the connecting flange, and the rotating shaft of the servo motor is arranged in the vertical direction and is fixedly connected with the input shaft of the speed reducer (2) coaxially;
the speed reducer (2) is fixedly connected with a top cover (33) of the shell through screws, the bottom surface of the tail end of the speed reducer (2) is fixedly connected with a counterweight flywheel (3) through screws, the bottom end of the counterweight flywheel (3) is fixed in the middle of an upper workbench (4), a lower workbench (6) is connected with the upper workbench in a sliding mode through a dovetail groove structure, the vertical section of an L-shaped eccentric adjusting block (5) is tightly attached to the side wall of the upper workbench, the end part of the horizontal section of the L-shaped eccentric adjusting block is tightly attached to the side wall of the lower workbench, so that the upper workbench and the lower workbench are staggered by a set distance, the horizontal section of the L-shaped eccentric adjusting block is fixedly connected with the lower workbench, and the vertical section of the L-shaped eccentric adjusting block (5) is fixedly connected with the upper workbench;
a top boss of a first belt wheel (7) is arranged in a groove in the middle of the bottom of the lower workbench (6) and is fixedly connected with the groove through a screw, and the lower end of a wheel shaft of the first belt wheel is arranged on a base (34) through a bearing;
the first belt wheel (7) is connected with the second belt wheel (17) through a first synchronous toothed belt (8);
a first rotating shaft (12), a second rotating shaft (18) and a third rotating shaft (21) are sequentially and rotatably arranged between the bottom plate of the base (34) and the top cover of the base at intervals from left to right along the longitudinal direction of the base, and the upper ends and the lower ends of the second rotating shaft and the third rotating shaft of the first rotating shaft are respectively and rotatably connected with the bottom plate of the base and the top cover of the base through bearings;
a second belt wheel (17), a lower overtaking clutch (14-1) and an upper overtaking clutch (14-2) are sequentially fixed on the first rotating shaft (12) from bottom to top, a third belt wheel (16) is fixed on an outer ring of the lower overtaking clutch, a first gear (15) 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 first rotating shaft (12), the connecting direction of the lower overtaking clutch and the third belt wheel is opposite to the connecting direction of the upper overtaking clutch and the first gear so that when the first rotating shaft rotates, the state of connection or disconnection of the upper overtaking clutch and the first gear is opposite to the state of connection or disconnection of the lower overtaking clutch and the third belt wheel;
the lower part and the upper part of the second rotating shaft are respectively connected with a third gear (20) and a second gear (19) through keys, a bearing at the bottom of the second rotating shaft is separated from the third gear (20) through a shaft sleeve arranged on the second rotating shaft, the third gear (20) and the second gear (19) are separated through a shaft sleeve arranged on the second rotating shaft, and the first gear (15) is meshed with the second gear (19);
a fourth gear (22) is arranged on a shaft shoulder at the lower end of a third rotating shaft (21) through a key, the fourth gear (22) is meshed with the third gear (20), the upper end surface of the fourth gear is separated from a fifth gear (24) arranged at the upper end of the third rotating shaft through a shaft sleeve, and the fifth gear is connected with the third rotating shaft through a key;
a sixth gear (25) is meshed with the fifth gear, and a fourth belt wheel (26) and the third belt wheel (16) are connected through a second synchronous toothed belt (27);
the sixth gear (25) and the fourth belt wheel (26) are fixed on a spline nut (31) of a rotary ball spline through long screws, the spline nut (31) is fixed on a base (34) through a flange outer ring, a spline shaft (30) of the rotary ball spline arranged in the vertical direction is meshed with the spline nut (31), a base connecting piece (29) is fixed on the base (34) through screws, the top surface of the base connecting piece (29) is connected with a low-friction cylinder (28) through a boss, and an output shaft of the low-friction cylinder is fixedly connected with the upper end of the spline shaft, so that an executing element connected with the end of the spline shaft can move up and down in a certain stroke.
2. The polishing mechanism with variable transmission ratio for changing the eccentricity value by the eccentric adjusting block according to claim 1, wherein: the counterweight flywheel is in a semi-disc shape.
3. The polishing mechanism with variable transmission ratio for changing the eccentric value by the eccentric adjusting block according to claim 1 or 2, wherein: the speed reducer adopts a precise planetary gear speed reducer.
4. The polishing mechanism with variable transmission ratio for changing the eccentric value by the eccentric adjusting block according to claim 3, wherein: 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 the first rotating shaft through keys, the third belt wheel and the wedge type lower overrunning clutch are connected through wedge blocks arranged in grooves which are opposite to each other, the first gear and the wedge type upper overrunning clutch are also connected through wedge blocks arranged in grooves which are opposite to each other, and when the direction of connection of the wedge type lower overrunning clutch and the third belt wheel is opposite to the direction of connection of the wedge type upper overrunning clutch and the first gear so that the first rotating shaft rotates, the state of connection or disconnection of the wedge type upper overrunning clutch and the first gear is opposite to the state of connection or disconnection of the wedge type lower overrunning clutch and the third belt wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811537155.3A CN109664178B (en) | 2018-12-14 | 2018-12-14 | Polishing mechanism with variable transmission ratio and eccentric value changed through eccentric adjusting block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811537155.3A CN109664178B (en) | 2018-12-14 | 2018-12-14 | Polishing mechanism with variable transmission ratio and eccentric value changed through eccentric adjusting block |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109664178A CN109664178A (en) | 2019-04-23 |
| CN109664178B true CN109664178B (en) | 2020-10-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811537155.3A Active CN109664178B (en) | 2018-12-14 | 2018-12-14 | Polishing mechanism with variable transmission ratio and eccentric value changed through eccentric adjusting block |
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