CN213828303U - Centering grinder for lens - Google Patents

Abstract

A lens barrel centering grinder capable of simultaneously processing a plurality of lens barrels in one work process. The automatic top gauge mechanism is characterized in that a plurality of square carrying discs are arranged on a workbench, a transfer centering disc with a plurality of opening fixtures, an iris mechanism with a plurality of clamping top gauges, a warehouse manipulator with a plurality of suckers, a transfer manipulator and a transfer cam divider are arranged on the workbench, a self-rotating body processing platform formed by splicing an upper self-rotating body base and a lower self-rotating body base is arranged on a processing station, involute wheels are arranged on the outer end surfaces of the self-rotating body processing platform, a rotating support and a self-rotating body cam divider are arranged at the lower end of the self-rotating body base, a plurality of sets of rotating lens shaft bases capable of sliding in the radial direction are arranged on the upper self-rotating body base and the lower self-rotating body base, manual micro-dividing heads are arranged on the rotating lens shaft bases, bearings matched with the involute wheels, rotating lens shafts with synchronous belt wheels at shaft ends and rotating lens barrels arranged at the outer ends of the rotating lens barrels can rotate synchronously, and a lower fixture and an upper fixture are arranged at the outer ends of the rotating lens barrels respectively. The lens centering grinder can remarkably improve the working efficiency.

Description

Centering grinder for lens

Technical Field

The utility model relates to a lens piece grinding device who carries out centering grinding processing to the excircle size and the shape of lens piece, especially the lens piece centering that can grind a plurality of lens pieces simultaneously grinds machine.

Background

The lens is widely applied to digital equipment such as mobile phone cameras, monitors and the like and optical instruments. At present, the known lens centering grinder consists of a workbench, a set of warehouse manipulators, an upper clamp with an air blowing valve, a lower clamp with an air blowing valve and a vacuum valve, a grinding wheel, a grinding fluid nozzle, a manual differential head and the like. When the grinding machine works, the grinding wheel rotates, grinding fluid is supplied, a lens to be processed is placed on the workbench, the warehouse mechanical arm conveys the lens to the clamp of the workbench through the sucker and conveys the lens to the lower clamp of the processing station through the conveying mechanism, the lower clamp is vacuumized to form a negative pressure state to fix the lens, the upper clamp and the lower clamp are folded to clamp the lens, the size of the excircle of the lens is ground and processed by being close to the grinding wheel, the grinding wheel performs lifting action after the size of the excircle is processed, chamfering is carried out on the upper part and the lower part of the outer diameter of the lens, after chamfering is finished, the grinding wheel is reset, the upper clamp and the lower clamp loosen the lens, the conveying mechanism conveys the lens to a clamp of a workbench through a sucking disc, the warehouse manipulator conveys the lens to a finished product box of the workbench through the sucking disc, and then starting the next working cycle, and repeating the working cycle, wherein the machining errors of the grinding and chamfering of the outer diameter of the lens can be accurately adjusted by adjusting the manual micro-dividing head.

However, the known lens segment centering grinder can only process one lens segment in one working process, and is relatively inefficient.

Disclosure of Invention

Grind machine in order to overcome current lens centering can only process a lens, the less not enough of efficiency ratio in a work flow, the utility model provides a machine is ground in lens centering, this machine is ground in lens centering can a plurality of lens lenses of simultaneous processing in a work flow, is showing improvement work efficiency.

The utility model provides a technical scheme that its technical problem adopted is:

arranging a transfer centering disc on a workbench, uniformly arranging N opening clamps for storing lens pieces to be processed and N opening clamps for storing processed lens pieces on the transfer centering disc according to the circumference, wherein the opening clamps for storing the lens pieces to be processed and the opening clamps for storing the processed lens pieces are arranged at intervals, sleeving an iris flower mechanism which is concentric with the transfer centering disc, driven by a motor and provided with N involute surfaces on the periphery of the transfer centering disc, and arranging a clamping top gauge at the same position of each involute surface, wherein each clamping top gauge corresponds to the opening clamps on the transfer centering disc;

a digital warehouse platform is arranged on a workbench on one side of the transfer centering disc, a plurality of conical positioning pins are arranged on the digital warehouse platform, a plurality of square carrying discs which are arranged in an array mode on the surface and used for placing blanks for lens lenses to be processed are arranged on the digital warehouse platform, and round holes corresponding to the conical positioning pins are arranged on opposite corners of each square carrying disc;

the warehouse manipulator is provided with N suckers, the workbench is provided with a set of transfer manipulator, the transfer manipulator is provided with 2N suckers, the workbench is provided with a transfer cam divider, and an output shaft of the transfer cam divider is connected with the transfer manipulator;

the processing station is provided with a mouse cage-shaped self-rotating body processing platform which is formed by splicing a horizontal upper self-rotating body base and a horizontal lower self-rotating body base and is internally provided with a grinding wheel and a grinding fluid nozzle, a ring-shaped rotating body supporting bearing which is positioned at the periphery of the lower self-rotating body base, is concentric with the self-rotating body processing platform, bears the weight of the self-rotating body processing platform, restrains the rotation of the self-rotating body processing platform and is flush with the surface of a working table is arranged on the body framework, an involute wheel with N involute surfaces uniformly distributed on the circumference is respectively arranged at the central position of the outer end surfaces of the upper self-rotating body base and the lower self-rotating body base, the two involute wheels provide power and realize synchronous feeding through a transmission shaft which penetrates through the self-rotating body processing platform and is connected with a motor shaft, a hollow rotating bracket is arranged below the lower self-rotating body base, a grinding wheel spindle base is arranged on the rotating bracket and is connected with the lower self-rotating body base, and a spindle motor driving the grinding wheel to rotate and a lifting motor to lift the grinding wheel and the spindle motor are arranged in the rotating bracket The machine body framework below the rotating bracket is provided with a self-rotating body cam divider which provides rotating power for the self-rotating body processing platform, and the lower end of the rotating bracket is provided with a transmission shaft and is connected with the self-rotating body cam divider through the transmission shaft;

n notches which are corresponding one to one up and down and penetrate and are sealed are uniformly distributed on an upper rotating body base and a lower rotating body base along the radial direction and the circumference, each notch is provided with a vertical flat plate which is parallel to the notch and has the same position, a set of rotating mirror shaft base is arranged at the same position of each vertical flat plate, each set of rotating mirror shaft base is provided with a set of linear guide rail, a cylinder which is parallel to the linear guide rail and a manual differential head, the rotating mirror shaft base can generate radial sliding under the driving of the cylinder, each set of rotating mirror shaft base is provided with a bearing which is adjacent to the involute surface of the involute wheel and is close to the involute surface under the action of the cylinder, the involute wheel rotates to generate feeding action of lens grinding, each set of rotating mirror shaft base is provided with a rotating mirror shaft along the vertical direction, a rotating mirror barrel is sleeved outside the rotating mirror shaft and is connected with the rotating mirror shaft base through a sliding bearing and can rotate, the upper rotating lens barrel located on the upper rotating body base is provided with a rotating lens barrel lifting mechanism driven by a cylinder, the lower rotating lens barrel located on the lower rotating body base is not provided with a lower clamp with an air blowing valve and a vacuum valve, the lower end of each upper rotating lens barrel is provided with an upper clamp with an air blowing valve, and the shaft end of the rotating lens shaft is provided with a synchronous belt wheel and the synchronous belt wheel which are mutually matched through a synchronous belt to enable all the rotating lens barrels to realize synchronous rotation.

A horizontal synchronous belt tensioning wheel base is arranged above the upper self-rotating body base, synchronous belt tensioning wheels with the same number as the synchronous belt wheels are uniformly distributed on the circumference of the lower surface of the upper self-rotating body base, and each synchronous belt tensioning wheel is directly opposite to the synchronous belt wheel below the synchronous belt tensioning wheel and is matched with the synchronous belt wheel to provide tensioning support for the synchronous belt wheel;

gear sets are respectively arranged on the outer end faces of the upper self-transmission body base and the lower self-transmission body base, the number of the gear sets is the same as that of the synchronous belt pulleys, and the gear sets enable the rotating lens barrels to synchronously rotate and slide along the radial direction;

the gear attached to the involute wheel is set to be a back clearance eliminating gear set so as to eliminate back clearance and ensure machining precision.

And placing the square carrying disc with the lens to be processed on a digital warehouse platform, starting a processing program, operating a grinding wheel and supplying grinding fluid.

The warehouse manipulator sucks the lens lenses one by one on the designated positions through the interpolation of servo motors of an X axis and a Y axis respectively; after the warehouse manipulator moves right above the transfer centering disc, the lifting cylinder of the Z shaft acts, the suckers place the lens pieces in corresponding opening clamps on the transfer centering disc, all the suckers are converted into a blowing state from a suction state, all the lens pieces are separated from the suckers and are placed in the opening clamps at one time, the Z shaft lifting cylinder drives the warehouse manipulator to ascend, blowing stops, the warehouse manipulator returns to the square carrying disc, the lens pieces to be processed are taken out again through the suckers, and returning and waiting are carried out.

The middle centering disc is driven by the iris mechanism to clamp and hold the opening clamp placed in the lens; the driving motor of the transfer manipulator rotates reversely, the sucking disc contacts and sucks the lens, the iris mechanism returns, the opening clamp loosens the lens, the driving motor of the transfer manipulator rotates forwards to pass through the original point position, the sucking disc of the transfer manipulator is sent to the position right above each lower clamp in the rotation body processing platform, and the empty sucking disc of the transfer manipulator, which does not take the lens, faces the lower clamp; the method comprises the following steps that a cylinder of a transfer manipulator acts, an air suction disc contacts and sucks a processed lens, a vacuum valve of a lower clamp stops acting and an air blowing valve acts, the processed lens is transferred onto the air suction disc, the cylinder of the transfer manipulator acts, the suction disc leaves a lower clamp and rotates under the driving of a transfer cam divider, so that the next suction disc sucking the lens to be processed is opposite to the lower clamp, the cylinder of the transfer manipulator acts, the lens to be processed is placed on the lower clamp, the vacuum valve of the lower clamp acts and sucks the lens, meanwhile, the vacuum valve of the suction disc is closed and the air blowing valve acts, the lens to be processed is handed over, the cylinder of the transfer manipulator acts and leaves the lower clamp, and therefore the transfer manipulator takes out the processed lens and places the lens to be processed in situ; the driving motor of the transfer manipulator reversely rotates to return to the original position for waiting; and the self-rotating body processing platform rotates to the next station, and the transfer manipulator repeats the actions until the lens lenses of all the stations are completely transferred.

The following actions include storage of the finished lens blank and processing of the lens blank to be processed, which are performed simultaneously and individually. The following are described one by one.

Storage of the processed lens pieces: after the transfer manipulator takes all processed lens and places all to-be-processed lens on the lower clamp of the self-rotating processing platform, the driving motor rotates reversely to pass through the original position and stops after reaching the position right above the transfer centering disc; the method comprises the following steps that a transfer manipulator cylinder acts, a processed lens is placed in an opening clamp, a sucker vacuum valve is closed, an air blowing valve acts, all the lens are placed in the opening clamp at one time, the air blowing valve is closed, a transfer manipulator drives a motor to rotate forwards, the transfer manipulator returns to wait, and meanwhile, a process completion signal is sent to a warehouse manipulator and a signal is sent to a self-rotating body processing platform; after receiving the signals, the warehouse manipulator acquires the processed lens from the opening clamp of the rotary centering disc one by one through interpolation, puts the lens to be processed into the opening clamp, then puts the acquired processed lens into the spaces arranged in the array on the square carrying disc one by one through interpolation, then continues to acquire the lens to be processed, returns and waits for the next cycle;

processing a lens to be processed: when all the lower clamps of the rotation body processing platform are provided with the lens to be processed and receive a signal sent by the transfer manipulator, the lens is centered and ground; the radial cylinder on the rotating lens axle seat of each station acts to drive each rotating lens barrel to slide towards the center, the bearing of each rotating lens axle seat is abutted against the involute surface of the involute wheel, at the moment, the edge of each lens is separated from the grinding wheel at the center, the upper rotating lens barrel lifts the cylinder and descends, the upper clamp and the lower clamp act together to clamp the lens, the lower clamp vacuum valve is closed, each group of rotating lens barrels synchronously rotate at low speed under the driving of a rotating lens motor to eliminate the stress of the upper clamp and the lower clamp, the rotating lens barrels rotate at high speed after lasting for several seconds, the upper clamp and the lower clamp air blowing valve act to enable an extremely thin air gap to be generated between the upper clamp and the lower clamp and the spherical surface of the lens, at the moment, the lens instantaneously loses pressure, deflection compensation and centering are realized under the action of high-speed rotation, the air blowing valves of the upper clamp and the lower clamp are both closed, the vacuum valves of the lower clamp are opened, and the lens is re-covered by the upper clamp and the lower clamp, The lower clamp is clamped and sucked by the lower clamp, and the high-speed rotation is converted into the low-speed rotation; the involute wheel rotates reversely to drive all the rotating mirror shaft seats to slowly approach to the grinding wheel at the central position to finish the grinding of the outer diameter of the lens, when the lens is ground to a preset size, the grinding wheel lifting motor drives the grinding wheel to lift and reciprocate to chamfer the upper part and the lower part of the outer diameter of the lens, and after the chamfering is finished, the grinding wheel lifting motor returns, the rotating motor stops and the grinding is finished; the involute wheel motor rotates forwards to push the rotating lens shaft seat to be far away from the grinding wheel, the upper clamp cylinder acts, the upper rotating lens barrel drives the upper clamp to move upwards and leave the lens, the lens is absorbed on the lower clamp, all the lower rotating lens barrels act along the radial direction of the cylinder to drive the lens to move to the position with the maximum radius, namely the position where the lens is taken and placed by the transfer manipulator, and a signal is sent to the transfer manipulator from the rotary body processing platform; after the whole grinding process is finished, the machine is in a waiting mode, and then the next working cycle is started and repeated; the machining error of the grinding and chamfering of the outer diameter of each lens can be accurately controlled by adjusting the manual differential head.

The beneficial effects of the utility model are that, can be in a work flow a plurality of lens lenses of simultaneous processing, showing and improving work efficiency, can not reduce the processingquality of lens moreover.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic structural view of the rotation body processing platform of the present invention.

Fig. 3 is a schematic structural view of the lower rotating body base of the present invention.

Fig. 4 is a schematic structural view of the upper rotating body base of the present invention.

Fig. 5 is a schematic structural view of the rotating bracket of the present invention.

Fig. 6 is a schematic structural view of the grinding wheel spindle seat of the present invention.

Fig. 7 is a schematic structural view of the shaft seat of the present invention.

Fig. 8 is a schematic structural view of the transit centering plate of the present invention.

Fig. 9 is a schematic structural view of the involute wheel of the present invention.

Fig. 10 is a schematic structural view of the rotor cam divider according to the present invention.

Fig. 11 is a schematic structural view of the upper clamp of the present invention.

Fig. 12 is a schematic structural view of the lower clamp of the present invention.

Fig. 13 is a schematic structural view of the manual differential head of the present invention.

Fig. 14 is a schematic structural view of the gear train of the present invention.

Fig. 15 is a schematic structural view of a synchronous pulley coaxial gear in a gear train according to the present invention.

Fig. 16 is a schematic structural view of a rotary cylinder coaxial gear in the gear train of the present invention.

Fig. 17 is a schematic structural view of the synchronous belt tensioner of the present invention.

In the figure, 1, a workbench, 2, a middle centering disc, 3, an opening clamp, 4, a digital warehouse platform, 5, a square carrying disc, 6, an upper rotating body base, 7, a lower rotating body base, 8, a grinding wheel, 9, a rotating body processing platform, 10, a rotating body supporting bearing, 11, an involute surface, 12, an involute wheel, 13, a rotating bracket, 14, a grinding wheel spindle base, 15, a rotating body cam divider, 16, a notch, 17, a vertical flat plate, 18, a rotating lens spindle base, 19, a linear guide rail, 20, a manual micro-dividing head, 21, a bearing, 22, a rotating lens shaft, 23, a lower clamp, 24, an upper clamp, 25, a synchronous belt tensioning wheel base, 26, a synchronous belt tensioning wheel, 27, a gear set, 28, a rotating shaft, 29, a flat plate, 30, a synchronous belt wheel coaxial gear, 31, a rotating lens barrel coaxial gear, 32, a middle gear and 33, a back clearance eliminating gear set are arranged.

Detailed Description

The utility model discloses use the synchronous grinding of six lens lenses to feed, promptly in a workflow six lens lenses of simultaneous processing explain as the embodiment.

As shown in fig. 1, a transfer centering disc (2) is arranged on a workbench (1), in fig. 8, six opening clamps (3) for storing lens pieces to be processed and six opening clamps (3) for storing processed lens pieces are uniformly arranged on the transfer centering disc (2) according to the circumference, and the opening clamps (3) for storing lens pieces to be processed and the opening clamps (3) for storing processed lens pieces are arranged at intervals, that is, the opening clamps (3) store the lens pieces to be processed, and then the processed lens pieces are stored in two adjacent opening clamps (3), and so on. The periphery of the middle centering disc (2) is sleeved with an iris mechanism which is concentric with the middle centering disc, driven by a motor and provided with six involute surfaces, the same position of each involute surface is provided with a clamping top gauge, and each clamping top gauge corresponds to the opening clamp (3) on the middle centering disc (2). It should be noted that the clamping top gauge only clamps the opening clamp (3) for storing the lens to be processed, but does not go to the opening clamp (3) for storing the processed lens, so that the common closed clamp can be used for storing the processed lens, and the opening clamp (3) is only used for facilitating the installation and operation of equipment.

As shown in fig. 1, a digital warehouse platform (4) is arranged on a workbench (1) on one side of a transfer centering disc (2), a plurality of conical positioning pins are arranged on the digital warehouse platform (4), a plurality of square carrying discs (5) which are arranged in an array and are provided with blank spaces for placing lens lenses to be processed are arranged on the surface of the digital warehouse platform (4), and round holes corresponding to the positions of the conical positioning pins are arranged at opposite angles of each square carrying disc (5).

Six suckers are arranged on the warehouse manipulator, a set of transfer manipulator is arranged on the workbench (1), twelve suckers are arranged on the transfer manipulator, a transfer cam divider is arranged on the workbench (1), and an output shaft of the transfer cam divider is connected with the transfer manipulator.

In figure 2, a processing station is provided with a horizontal mouse cage-shaped self-rotating body processing platform (9) which is formed by splicing an upper self-rotating body base (6) shown in figure 4 and a horizontal lower self-rotating body base (7) shown in figure 3 and is internally provided with a grinding wheel (8) and a grinding fluid nozzle, a set of annular rotor supporting bearings (10) which are positioned at the periphery of the lower self-rotating body base (7), are concentric with the self-rotating body processing platform (9), bear the weight of the self-rotating body processing platform and restrict the rotation of the self-rotating body processing platform and are flush with the table top of a working table (1) is arranged on a body framework, an involute wheel (12) which is provided with six involute surfaces (11) which are uniformly distributed in the circumference and is respectively arranged at the central position of the outer end surfaces of the upper self-rotating body base (6) and the lower self-rotating body base (7) and is provided with power and realizes synchronous feeding through a transmission shaft which penetrates through the self-rotating body processing platform (9) and is connected with a motor shaft, a hollow rotating bracket (13) is arranged below the lower self-rotating body base (7), a grinding wheel spindle seat (14) shown in figure 6 is arranged on the rotating bracket (13) and connected with the lower self-rotating body base (7), a spindle motor for driving a grinding wheel (8) to rotate and a lifting motor for driving the grinding wheel (8) and the spindle motor to lift are arranged in the rotating bracket (13), a self-rotating body cam divider (15) for providing rotating power for the self-rotating body processing platform (9) and shown in figure 10 is arranged on a machine body framework below the rotating bracket (13), and a transmission shaft is arranged at the lower end of the rotating bracket (13) and connected with the self-rotating body cam divider (15) through the transmission shaft.

The transfer cam divider and the rotation body cam divider (15) convert the continuous rotation of the input end of the motor into intermittent rotation, and realize the precise indexing of machinery; the working steps are matched with each other, so that strict synchronization and accurate matching of the working steps can be realized.

As shown in fig. 3 and 4, six up-down one-to-one corresponding, penetrating and closed notches (16) are uniformly distributed on the upper and lower rotating body bases (6) and (7) along the radial direction and the circumference, a vertical flat plate (17) which is parallel to the notches (16) and has the same position is arranged on each notch (16), a set of rotating mirror shaft seat (18) is arranged on the same position of each vertical flat plate (17), as shown in fig. 7, a set of linear guide rail (19), a cylinder which is parallel to the linear guide rail (19) and a manual differential head (20) are arranged on each set of rotating mirror shaft seat (18), the rotating mirror shaft seats (18) can generate radial sliding under the driving of the cylinder, a bearing (21) which is adjacent to the involute surface (11) of the involute wheel (12) is arranged on each set of rotating mirror shaft seat (18), and the bearing (21) is next to the involute surface (11) under the action of the cylinder, the involute wheel (12) rotates to generate the feeding action of lens grinding, a rotating mirror shaft (22) is arranged on each set of rotating mirror shaft seat (18) along the vertical direction, the outside of the rotating mirror shaft (22) is sleeved with a rotating mirror cylinder which is connected with a rotating mirror shaft seat (18) through a sliding bearing and can rotate, the upper rotating mirror cylinders positioned on the upper rotating body base (6) are provided with rotating mirror cylinder lifting mechanisms driven by cylinders, and the lower rotating mirror cylinders positioned on the lower rotating body base (7) are not provided, the upper end of each lower rotating lens barrel is provided with a lower clamp (23) which is provided with an air blowing valve and a vacuum valve and is shown in figure 12, the lower end of each upper rotating lens barrel is provided with an upper clamp (24) with an air blowing valve as shown in figure 11, the upper clamp (24) and the lower clamp (23) are both made of brass so as to avoid scratching the lens, the shaft ends of the rotating mirror shafts (22) are provided with synchronous belt wheels, and the synchronous belt wheels are mutually matched through a synchronous belt to enable all the rotating mirror cylinders to realize synchronous rotation.

In fig. 2, a horizontal synchronous belt tensioning wheel base (25) is arranged above the upper rotating body base (6), synchronous belt tensioning wheels (26) which are the same as the synchronous belt wheels in number and are shown in fig. 17 are uniformly distributed on the circumference of the lower surface of the upper rotating body base, and each synchronous belt tensioning wheel (26) is directly opposite to the synchronous belt wheel below the synchronous belt tensioning wheel and is matched with the synchronous belt wheel to provide tensioning support for the synchronous belt wheel.

In fig. 2, gear sets (27) having the same number as that of the synchronous pulleys for synchronously rotating the rotary lenses and synchronously sliding the rotary lenses in the radial direction are provided on the outer end surfaces of the upper and lower rotary body mounts (6, 7), respectively, as shown in fig. 14, the gear sets (27) are respectively mounted on two plates (29) which can be opened and closed about the rotary shaft (28), and each gear set (27) includes a synchronous pulley coaxial gear (30) shown in fig. 15 and a rotary lens coaxial gear (31) shown in fig. 16 which are provided on one plate (29) and on the other plate (29), and an intermediate gear (32) shown in fig. 14 which is provided on the rotary shaft (28) and meshes with the two gears, respectively.

In fig. 9, a gear attached to the involute wheel (12) is provided as a backlash elimination gear set (33) to eliminate backlash and ensure machining accuracy.

The following briefly describes the working process of the centering grinder for lens glasses of the present invention.

The square carrying disc (5) with the lens to be processed is placed on the digital warehouse platform (4), a processing program is started, the grinding wheel (8) runs, and grinding fluid is supplied.

The warehouse manipulator sucks the lens lenses one by one on the designated positions through the interpolation of servo motors of an X axis and a Y axis respectively; after the warehouse manipulator moves to directly over transfer centering dish (2), the lift cylinder action of its Z axle, the sucking disc is arranged lens in corresponding opening anchor clamps (3) on transfer centering dish (2), all sucking discs convert the state of blowing into by the state of breathing in, all lens lenses all break away from the sucking disc and are put into opening anchor clamps (3) once only, Z axle lift cylinder drives the warehouse manipulator and rises, blow and stop, the warehouse manipulator gets back to square year dish (5), take out again through the sucking disc and wait to process the lens, the return waits.

The middle centering disc (2) is driven by an iris mechanism to clamp and hold an opening clamp (3) placed in the lens; the driving motor of the transfer manipulator rotates reversely, the sucking disc contacts and sucks the lens, the iris mechanism returns, the opening clamp (3) loosens the lens, the driving motor of the transfer manipulator rotates forwards to cross the original point position, the sucking disc of the transfer manipulator is sent to the position right above each lower clamp (23) in the rotation body processing platform (9), and the empty sucking disc of the transfer manipulator, which does not take the lens, faces the lower clamp (23) at the moment; the cylinder of the transfer manipulator acts, the air suction disc contacts and sucks the processed lens, the vacuum valve of the lower clamp (23) stops acting and the air blowing valve acts, the processed lens is transferred to the air suction disc, the cylinder of the transfer manipulator acts, the sucker leaves the lower clamp (23) and rotates under the driving of the transfer cam divider, so that the next sucker for sucking the lens to be processed is opposite to the lower clamp (23), the cylinder of the transfer manipulator acts, the lens to be processed is placed on the lower clamp (23), the vacuum valve of the lower clamp (23) acts to suck the lens, meanwhile, the vacuum valve of the sucker is closed, the air blowing valve acts to complete the connection of the lens to be processed, the air cylinder of the transfer manipulator acts and leaves the lower clamp (23), thus, the transfer manipulator takes out the processed lens and places a lens to be processed in situ; the driving motor of the transfer manipulator reversely rotates to return to the original position for waiting; and the self-rotating machining platform (9) rotates to the next station, and the transfer manipulator repeats the actions until the lens lenses of all stations are transferred.

The following actions include storage of the finished lens blank and processing of the lens blank to be processed, which are performed simultaneously and individually. The following are described one by one.

Storage of the processed lens pieces: after the transfer manipulator takes all processed lens and places all to-be-processed lens on a lower clamp (23) of the self-rotation processing platform (9), a driving motor of the transfer manipulator reversely rotates to pass through the original position and stops after reaching the position right above the transfer centering disc (2); the cylinder of the transfer manipulator acts, the processed lens is placed in the position of the opening clamp (3), the sucker vacuum valve is closed, the air blowing valve acts, the lens is completely placed in the opening clamp (3) at one time, the air blowing valve is closed, the transfer manipulator drives the motor to rotate forwards, the transfer manipulator returns to wait, and meanwhile, a process completion signal is sent to the warehouse manipulator and a signal is sent to the rotation body processing platform (9); after receiving the signals, the warehouse manipulator acquires the processed lens from the opening clamp (3) of the rotary centering disc (2) one by one through interpolation, puts the lens to be processed into the opening clamp (3), then puts the acquired processed lens into the spaces arranged in the array on the square carrying disc (5) one by one through interpolation, then continues to acquire the lens to be processed, and returns to the original position to wait for the next cycle;

processing a lens to be processed: when all the lower clamps (23) of the rotation body processing platform (9) are provided with the lens to be processed and receive a signal sent by the transfer manipulator, the lens is centered and ground; radial cylinders on a rotating lens shaft seat (18) of each station act to drive each rotating lens barrel to slide towards the center, a bearing of each rotating lens shaft seat (18) abuts against an involute surface (11) of an involute wheel (12), a distance is reserved between the edge of each lens and a grinding wheel (8) at the center, an upper rotating lens barrel lifting cylinder acts, the upper rotating lens barrel descends, an upper clamp and a lower clamp act together to clamp the lens, a vacuum valve of the lower clamp is closed, each group of rotating lens barrels synchronously rotate at low speed under the drive of a rotating lens motor to eliminate the stress of the upper clamp and the lower clamp, the rotating lens barrels rotate at high speed after lasting for several seconds, air blowing valves of the upper clamp and the lower clamp (24) and (23) act to generate an extremely thin air gap between the upper clamp and the lower clamp (24) and the spherical surface of the lens, the lens instantaneously loses pressure, and deflection compensation and centering are realized under the action of high-speed rotation, the air blowing valves of the upper clamp (24) and the lower clamp (23) are closed, the vacuum valve of the lower clamp (23) is opened, the lens is clamped by the upper clamp (24) and the lower clamp (23) again and is sucked by the lower clamp (23), and the high-speed rotation is converted into the low-speed rotation; the involute wheel (12) rotates reversely to drive all the rotating mirror shaft seats (18) to slowly approach to the grinding wheel (8) at the central position, the outer diameter grinding of the lens is completed, when the lens is ground to a preset size, the grinding wheel (8) is driven by the lifting motor of the grinding wheel (8) to lift and reciprocate, the upper part and the lower part of the outer diameter of the lens are chamfered, after the chamfering is completed, the lifting motor of the grinding wheel (8) returns, the rotation motor stops, and the grinding is completed; the motor of the involute wheel (12) rotates forwards to push the rotating lens shaft seat (18) to be far away from the grinding wheel (8), the upper clamp (24) cylinder acts, the upper rotating lens barrel drives the upper clamp (24) to move upwards and leave the lens, the lens is sucked on the lower clamp (23), all the lower rotating lens barrels act along the radial direction of the cylinder to drive the lens to move to the position with the maximum radius, namely the position for taking and placing the lens by the transfer manipulator, and a signal is sent to the transfer manipulator from the rotating body processing platform (9); after the whole grinding process is finished, the machine is in a waiting mode, and then the next working cycle is started and repeated; the machining error of the outer diameter grinding and chamfering of each lens piece can be accurately controlled by adjusting the manual differential head (20).

Claims (4)

1. The utility model provides a lens centering grinds machine, includes workstation, emery wheel and grinding fluid nozzle, characterized by:

arranging a transfer centering disc on a workbench, uniformly arranging N opening clamps for storing lens pieces to be processed and N opening clamps for storing processed lens pieces on the transfer centering disc according to the circumference, wherein the opening clamps for storing the lens pieces to be processed and the opening clamps for storing the processed lens pieces are arranged at intervals, sleeving an iris flower mechanism which is concentric with the transfer centering disc, driven by a motor and provided with N involute surfaces on the periphery of the transfer centering disc, and arranging a clamping top gauge at the same position of each involute surface, wherein each clamping top gauge corresponds to the opening clamps on the transfer centering disc;

a digital warehouse platform is arranged on a workbench on one side of the transfer centering disc, a plurality of conical positioning pins are arranged on the digital warehouse platform, a plurality of square carrying discs which are arranged in an array mode on the surface and used for placing blanks for lens lenses to be processed are arranged on the digital warehouse platform, and round holes corresponding to the conical positioning pins are arranged on opposite corners of each square carrying disc;

the warehouse manipulator is provided with N suckers, the workbench is provided with a set of transfer manipulator, the transfer manipulator is provided with 2N suckers, the workbench is provided with a transfer cam divider, and an output shaft of the transfer cam divider is connected with the transfer manipulator;

the processing station is provided with a mouse cage-shaped self-rotating body processing platform which is formed by splicing a horizontal upper self-rotating body base and a horizontal lower self-rotating body base and is internally provided with a grinding wheel and a grinding fluid nozzle, a ring-shaped rotating body supporting bearing which is positioned at the periphery of the lower self-rotating body base, is concentric with the self-rotating body processing platform, bears the weight of the self-rotating body processing platform, restrains the rotation of the self-rotating body processing platform and is flush with the surface of a working table is arranged on the body framework, an involute wheel with N involute surfaces uniformly distributed on the circumference is respectively arranged at the central position of the outer end surfaces of the upper self-rotating body base and the lower self-rotating body base, the two involute wheels provide power and realize synchronous feeding through a transmission shaft which penetrates through the self-rotating body processing platform and is connected with a motor shaft, a hollow rotating bracket is arranged below the lower self-rotating body base, a grinding wheel spindle base is arranged on the rotating bracket and is connected with the lower self-rotating body base, and a spindle motor driving the grinding wheel to rotate and a lifting motor to lift the grinding wheel and the spindle motor are arranged in the rotating bracket The machine body framework below the rotating bracket is provided with a self-rotating body cam divider which provides rotating power for the self-rotating body processing platform, and the lower end of the rotating bracket is provided with a transmission shaft and is connected with the self-rotating body cam divider through the transmission shaft;

n notches which are corresponding one to one up and down and penetrate and are sealed are uniformly distributed on an upper rotating body base and a lower rotating body base along the radial direction and the circumference, each notch is provided with a vertical flat plate which is parallel to the notch and has the same position, a set of rotating mirror shaft base is arranged at the same position of each vertical flat plate, each set of rotating mirror shaft base is provided with a set of linear guide rail, a cylinder which is parallel to the linear guide rail and a manual differential head, the rotating mirror shaft base can generate radial sliding under the driving of the cylinder, each set of rotating mirror shaft base is provided with a bearing which is adjacent to the involute surface of the involute wheel and is close to the involute surface under the action of the cylinder, the involute wheel rotates to generate feeding action of lens grinding, each set of rotating mirror shaft base is provided with a rotating mirror shaft along the vertical direction, a rotating mirror barrel is sleeved outside the rotating mirror shaft and is connected with the rotating mirror shaft base through a sliding bearing and can rotate, the upper rotating lens barrel located on the upper rotating body base is provided with a rotating lens barrel lifting mechanism driven by a cylinder, the lower rotating lens barrel located on the lower rotating body base is not provided with a lower clamp with an air blowing valve and a vacuum valve, the lower end of each upper rotating lens barrel is provided with an upper clamp with an air blowing valve, and the shaft end of the rotating lens shaft is provided with a synchronous belt wheel and the synchronous belt wheel which are mutually matched through a synchronous belt to enable all the rotating lens barrels to realize synchronous rotation.

2. The lens optic centering mill of claim 1, wherein: a horizontal synchronous belt tensioning wheel base is arranged above the upper self-rotation body base, synchronous belt tensioning wheels with the same number as the synchronous belt wheels are evenly distributed on the circumference of the lower surface of the upper self-rotation body base, and each synchronous belt tensioning wheel faces the synchronous belt wheel below the synchronous belt tensioning wheel and is matched with the synchronous belt wheel to provide tensioning support for the synchronous belt wheel.

3. The lens optic centering mill of claim 1, wherein: the gear sets are respectively arranged on the outer end faces of the upper self-transmission body base and the lower self-transmission body base, the number of the gear sets is the same as that of the synchronous belt pulleys, and the gear sets enable the rotating lens barrels to synchronously rotate and slide along the radial direction.

4. The lens optic centering mill of claim 1, wherein: the gear attached to the involute wheel is set to be a back clearance eliminating gear set so as to eliminate back clearance and ensure machining precision.

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