CN209256573U - Numerical control precision double-station grinding machine - Google Patents

Abstract

The utility model discloses a numerical control precise double-station grinding machine, which comprises a machine base, wherein a feeding mechanism, a positioning mechanism and a grinding mechanism are sequentially arranged on the machine base along the feeding direction of lenses, the positioning mechanism and the grinding mechanism are respectively provided with two groups, the feeding mechanisms comprise a trough and feeding manipulators, a material taking manipulator is arranged between the two groups of positioning mechanisms, each group of grinding mechanisms comprises a lens clamping mechanism and a grinding wheel driving mechanism, the lens clamping mechanism comprises a lens rotating shaft and a lens clamping shaft, the grinding wheel driving mechanism comprises a grinding wheel and a grinding wheel spindle, the lens rotating shaft is arranged at the rear side of the positioning mechanism, the lens clamping shaft is arranged above the lens rotating shaft, the grinding wheel spindle is mounted on the rear side of the lens rotating shaft, and the grinding wheel is mounted on the grinding wheel spindle and can be driven to rotate by the grinding wheel spindle. The utility model discloses a full automatization that the lens ground has improved the efficiency and the quality that the lens ground.

Description

CNC precision double station grinding machine

technical field

The utility model relates to the technical field of lens processing equipment, in particular to a numerical control precision double-station grinding machine.

Background technique

In recent years, with the development of science and technology, smart phones, smart wearable devices, white goods, smart displays, etc. are closely related to people's daily life, and the development of mobile phone cameras, smart wearable devices, white goods, smart displays, etc. Open the production of high-performance lenses. Existing lenses need to be ground according to requirements after molding, and the quality of the grinding equipment directly affects the processing quality and processing efficiency of the lenses. The existing lens grinding machine has many manual operation procedures, the labor intensity of the operators is high, the operation is monotonous and boring, the lens grinding efficiency is low, and the precision is poor, so it is difficult to meet the processing requirements of optical products for lenses.

Utility model content

The utility model aims at the deficiencies in the prior art, and provides a numerical control precision double-station grinding machine, which can reduce the labor intensity of operators, improve the grinding efficiency and processing precision of lenses.

In order to achieve the above object, the utility model adopts the following technical solutions:

A numerically controlled precision double-station grinding machine, comprising a machine base, on which a feeding mechanism, a positioning mechanism and a grinding mechanism are sequentially arranged along the lens feeding direction, the positioning mechanism and the grinding mechanism are each provided with two groups, and arranged side by side, the feeding mechanism includes a plurality of troughs for placing lenses and a feeding manipulator for taking the lenses in the troughs to the positioning mechanism for positioning. Take the positioned lens to the retrieving manipulator of the grinding mechanism. Each set of the grinding mechanism includes a lens clamping mechanism and a grinding wheel drive mechanism. The lens clamping mechanism includes a lens rotation axis and a lens clamping axis. The grinding wheel driving mechanism includes a grinding wheel and a grinding wheel spindle. The lens rotating shaft is rotatably installed on the rear side of the positioning mechanism, and the lens clamping shaft is movable up and down above the lens rotating shaft. The grinding wheel spindle It is rotatably installed on the rear side of the lens rotating shaft. The grinding wheel is installed on the grinding wheel spindle and can be driven to rotate by the grinding wheel spindle. The upper end surface of the lens rotating shaft is provided with a first vacuum suction hole for absorbing the lens. In order to increase the stability of the overall structure of the grinder and reduce the vibration of the grinder during work, in the utility model, the base is made of marble.

As a preferred solution, the rear end of the base is provided with a grinding base, and the grinding base is provided with a feed slide, a feed screw and a feed motor, and the two sides of the grinding base are provided with There is a first guide rail parallel to the feeding direction, the two sides of the feed slide are slidably connected with the first guide rail, the feed screw is arranged on the upper end of the grinding base, and the front end of the feed screw passes through The feed slide is threadedly connected to the feed slide, and the rear end of the feed screw is connected to the feed motor. Both sides of the feed slide are provided with grinding mounting plates, and the two grinding wheel spindles are rotatable. The front end of the corresponding grinding mounting plate is installed on the front end of the grinding mounting plate, and the grinding motor is fixedly installed on the rear end of the grinding mounting plate, and the grinding motor drives the main shaft of the grinding wheel to rotate through the transmission belt.

As a preferred solution, the front end of the grinding mounting plate is provided with a main shaft mounting seat, and the main shaft mounting seat is provided with a fitting fitting for the grinding wheel main shaft, and the grinding wheel main shaft is installed on the main shaft mounting seat through the fitting On the outside of the middle part of the grinding wheel spindle, a first positioning ring is set, and the outside of the first positioning ring is set with a second positioning ring, between the first positioning ring and the outer surface of the grinding wheel spindle, and the second positioning ring There is a gap between the ring and the outer surface of the first positioning ring, the upper and lower end faces of the first positioning ring and the second positioning ring are flush, and the upper and lower ends of the grinding wheel spindle are respectively provided with a first rolling bearing group and a second positioning ring. Two rolling bearing sets, the first positioning ring and the second positioning ring are sandwiched between the rolling bearings at the upper and lower ends, the upper end of the grinding wheel main shaft is provided with a main shaft protective cover, and the main shaft protective cover is provided with an opening on the side facing the motor, The transmission belt is connected to the main shaft of the grinding wheel through the opening, and the upper end of the main shaft of the grinding wheel is provided with an anti-slip groove corresponding to the transmission belt.

As a preferred solution, the front end of the grinding base is provided with a clamping shaft mounting seat, and both sides of the clamping shaft mounting seat are provided with second guide rails extending longitudinally, and the second guide rails are provided with clamping Tighten the slide seat, the clamping shaft mounting seat is provided with a clamping cylinder that drives the clamping slide to move up and down along the second guide rail, and the two lens clamping shafts are rotatably mounted on the corresponding clamping slide through bearings On the seat, a rotating shaft mounting seat is provided below the clamping shaft mounting seat, and the two lens rotating shafts are respectively installed on both sides of the upper end of the rotating shaft mounting seat through bearings, and the corresponding rotating shaft below the lens rotating shaft is installed A rotating motor is fixedly installed on the seat, and the rotating motor drives the lens rotating shaft to rotate through the gear set.

As a preferred solution, a longitudinally extending third guide rail is provided below the clamping shaft mounting base, and the rotating shaft mounting base is slidably connected to the third guide rail through a slider. The tightening shaft mounting seat is a lifting motor that slides along the third guide rail, the output shaft of the lifting motor is drivingly connected to the lifting screw rod, and the lifting screw rod is threadedly connected to the clamping shaft mounting seat.

As a preferred solution, the reclaiming manipulator includes a fourth guide rail arranged between two sets of positioning mechanisms, the fourth guide rail is provided with a reclaiming slide, and the reclaiming slide is provided with a first installation plate, the rear end of the first mounting plate is provided with a lifting cylinder and a second mounting plate driven by the lifting cylinder to move up and down, and the second mounting plate is provided with an overturning cylinder and a reclaiming shaft driven by the overturning cylinder. Both ends of the retrieving shaft are provided with suction heads, the upper and lower ends of the suction head are provided with suction plates, the output shaft of the turning cylinder is connected with a drive rack, and the output shaft of the retrieving shaft is The middle part is provided with an external tooth pattern that is aligned with the driving rack, and the flipping cylinder drives the reclaiming shaft to rotate through the cooperation of the driving tooth rack and the external tooth pattern.

As a preferred solution, rolling bearings are provided on both sides of the outer tooth pattern on the reclaiming shaft, and the reclaiming shaft is rotatably mounted on the rear end of the second mounting plate through the rolling bearings. The bottom of the tooth pattern is provided with a guide groove adapted to the drive rack. The drive rack is movably installed in the guide groove. Both sides of the front and rear of the lift cylinder are provided with linear bearings. A guide rod is provided, and the upper end of the guide rod is fixedly connected with the second mounting plate.

As a preferred solution, each set of positioning mechanisms includes a positioning base fixedly mounted on the base, the positioning base is provided with a vertically arranged support rod, and the upper end of the support rod is provided with a positioning base plate, The positioning bottom plate is provided with a first adjustment block and a first adjustment handle for controlling the movement of the first adjustment block, and a second adjustment block and a second adjustment handle for controlling the movement of the second adjustment block are arranged on the first adjustment block, The second adjusting block is provided with a positioning plate, the middle part of the positioning plate is provided with a positioning block, the adjacent two sides of the positioning block are provided with limit stops, and the upper end surface of the limit stop is higher than The upper surface of the positioning block is provided with a second vacuum suction hole for absorbing the lens.

As a preferred solution, the upper surface of the positioning bottom plate is provided with a first adjustment seat, and the first adjustment seat is provided with a first accommodating chamber with an upward opening, and a first adjustment seat is provided in the first accommodating chamber. Guide rail, the first adjustment block is slidingly connected with the first adjustment guide rail through the first adjustment slider, the first adjustment block is provided with a first sliding groove with the opening downward, and the first adjustment block passes through the first sliding groove The cover is installed on the outside of the first adjustment seat, the side wall of one side of the first chute is provided with a first through hole for the first adjustment handle to pass through, and the corresponding side wall of the first accommodating cavity is provided with A first screw hole for the first adjustment handle to pass through. One end of the first adjustment handle passes through the first through hole and the first screw hole in turn and is fixedly connected with the first adjustment block or the first adjustment slider. The upper surface of the first adjustment block is provided with a second adjustment seat, and the second adjustment seat is provided with a second accommodating chamber with an upward opening, and a second adjustment guide rail is arranged in the second accommodating chamber, and the second The adjustment block is slidingly connected with the second adjustment guide rail through the second adjustment slider. On the outside of the seat, one side wall of the second chute is provided with a second through hole for the second adjustment handle to pass through, and the corresponding side wall of the second accommodating cavity is provided with a second through hole for the second adjustment handle to pass through. through the second screw hole, one end of the second adjustment handle passes through the second through hole and the second screw hole in turn, and is fixedly connected with the second adjustment block or the second adjustment slider. The positioning protective cover is provided with a relief slot corresponding to the position of the first adjusting handle and the second adjusting handle.

As a preferred solution, the lower surface of the grinding wheel is provided with an inwardly concave relief groove, the middle part of the relief groove is provided with an outwardly protruding installation ring, and the center of the installation ring is provided with a The lower end of the main shaft is adapted to the installation shaft hole, the installation ring is provided with annular distribution installation through holes, and the outer peripheral surface of the grinding wheel is sequentially provided with a rough grinding part and a first fine grinding part. , the second fine grinding part and the third fine grinding part, the rough grinding part is a circumferential surface flush with the outer circumferential surface of the grinding wheel, the first fine grinding part, the second fine grinding part and the third fine grinding part All of them are arc-shaped grooves arranged on the outer peripheral surface of the grinding wheel. In the utility model, the rough grinding part is 400 mesh alloy sand, the first fine grinding part and the second fine grinding part are 600 mesh alloy sand, and the third fine grinding part is 1000 mesh alloy sand. , the edge of the product is roughly ground by the rough grinding part, and then the product is finished by the first fine grinding part and the second fine grinding part, and a little margin is reserved, and finally the fine grinding is carried out by the third fine grinding part , so that the grinding accuracy of the product can reach within 5μm.

The feeding manipulator of the utility model is a four-axis manipulator, which can move up and down, left and right, and forward and backward when working and feeding, and can also turn the lens up and down by 90°.

The utility model work process is as follows:

After the feeding manipulator sucks two lenses from the trough, flips up 90°, takes the lens to the positioning mechanism for positioning. During positioning, the feeding manipulator makes the two sides of the lens collide with the limit stops on both sides of the positioning block, so that The lens is at the center of the positioning block. After positioning, the second vacuum suction hole on the positioning block sucks the lens. Then, the retrieving manipulator sucks the positioned lens from the positioning mechanism and takes the lens to the lens clamping mechanism. The retrieving manipulator rotates 1800 first, so that the empty suction plate rotates downward to absorb the processed lens, then the reclaiming manipulator rotates 1800, puts the lens to be processed on the upper end of the lens rotation axis, and then clamps the lens axially Move down to clamp the lens, and then, the feed motor drives the feed slide to move, so that the grinding wheel installed on the grinding wheel spindle moves to the lens to be processed, and the grinding motor drives the grinding wheel shaft to rotate. At the same time, the rotating motor passes through the gear set Drive the rotation axis of the lens to rotate. Therefore, the utility model realizes the grinding of the edge of the lens through the four-axis linkage of the feeding manipulator, the rotation of the lens by the rotation axis of the lens, and the rotation of the grinding wheel by the grinding motor.

Compared with the prior art, the utility model has obvious advantages and beneficial effects, specifically: 1. By arranging two sets of positioning mechanisms and two sets of grinding mechanisms side by side, it is arranged to take the lens in the trough to the positioning mechanism The feeding manipulator is used to take the positioned lens to the feeding manipulator of the grinding mechanism, so that the grinding and feeding can be fully automated, reducing the workload of the operator. At the same time, by setting double stations, the equipment can synchronously process two pieces The lens is ground to improve the working efficiency and quality of the equipment; 2. By installing the first positioning ring outside the middle of the grinding wheel spindle, and installing the second positioning ring outside the first positioning ring, the first positioning ring and the second positioning ring Rolling bearings are arranged at both ends of the grinding wheel spindle, so that when the grinding wheel spindle is working, the vibration offset in the middle of the grinding wheel spindle can be reduced, the stability of the grinding wheel spindle can be improved, the working speed of the grinding wheel spindle can be increased, and the grinding efficiency of the equipment can be improved; 3. By adopting The driving rack cooperates with the outer tooth pattern in the middle of the reclaiming shaft to drive the reclaiming shaft to rotate, so that the reclaiming manipulator has the functions of retrieving, turning and unloading at the same time, which is conducive to the integrated setting of the equipment and reduces the overall volume of the equipment.

In order to more clearly illustrate the structural features, technical means and the specific purpose and functions achieved by the utility model, the utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments:

Description of drawings

Fig. 1 is the assembled structural drawing of the embodiment of the utility model;

Fig. 2 is a schematic diagram of the assembly structure of the grinding mechanism of the embodiment of the present utility model;

Fig. 3 is the installation structure diagram of the grinding wheel spindle of the embodiment of the present utility model;

Fig. 4 is a cross-sectional view of the installation structure of the grinding wheel spindle of the embodiment of the present invention;

Fig. 5 is the installation structural diagram of the lens rotating shaft of the embodiment of the present invention;

Fig. 6 is an installation structure diagram of the lens clamping shaft of the embodiment of the present invention;

Fig. 7 is the structural representation of the reclaiming manipulator of the embodiment of the utility model;

Fig. 8 is a schematic diagram of the assembly structure of the positioning mechanism of the embodiment of the present invention;

Fig. 9 is a schematic diagram of an exploded structure of a positioning mechanism of an embodiment of the present invention;

Fig. 10 is a schematic structural view of a grinding wheel according to an embodiment of the present invention;

Fig. 11 is a side view schematic diagram of the grinding wheel according to the embodiment of the present invention.

Detailed ways

As shown in Figure 1-11, a CNC precision double-station grinding machine includes a base 10, on which a feeding mechanism, a positioning mechanism and a grinding mechanism are sequentially arranged along the lens feeding direction, and the positioning The mechanism and the grinding mechanism are provided with two groups, and are arranged side by side. The feeding mechanism includes a plurality of troughs 80 for placing lenses and an upper trough for taking the lenses 100 in the troughs 80 to the positioning mechanism 30 for positioning. Material manipulator 20, between the two groups of positioning mechanisms 30 is provided with a retrieving manipulator 40 for taking the positioned lens 100 to the grinding mechanism, and each group of the grinding mechanism includes a lens clamping mechanism and a grinding wheel driving mechanism , the lens clamping mechanism includes a lens rotating shaft 50 and a lens clamping shaft 60, the grinding wheel drive mechanism includes a grinding wheel 90 and a grinding wheel spindle 70, and the lens rotating shaft 50 is rotatably mounted on the rear of the positioning mechanism 30 side, the lens clamping shaft 60 is mounted above the lens rotating shaft 50 movably up and down, the grinding wheel spindle 70 is rotatably mounted on the rear side of the lens rotating shaft 50, the grinding wheel 90 is mounted on the grinding wheel spindle and can be rotated by the grinding wheel spindle 70 , the upper end surface of the lens rotating shaft 50 is provided with a first vacuum suction hole 57 for absorbing the lens 100 . In order to increase the stability of the overall structure of the grinder and reduce the vibration of the grinder during operation, in the present utility model, the base 10 is made of marble. The feeding manipulator of the utility model is a four-axis manipulator, which can move up and down, left and right, and forward and backward when working and feeding, and can also turn the lens up and down by 90°.

As shown in 2-6, the rear end of the base 10 is provided with a grinding base 11, and the grinding base 11 is provided with a feed slide 13, a feed screw 14 and a feed motor 12. Both sides of the grinding base 11 are provided with first guide rails parallel to the feeding direction, both sides of the feed slide 13 are slidably connected with the first guide rails, and the feed screw 14 is arranged on the side of the grinding base 11. upper end, and the front end of the feed screw rod 14 passes through the feed slide seat 13 and is threadedly connected with the feed slide seat 13, and the rear end of the feed screw rod 14 is driven and connected with the feed motor 12, and the feed slide seat 13 Both sides are provided with a grinding mounting plate 15, and the two grinding wheel spindles 70 are rotatably mounted on the front ends of the corresponding grinding mounting plate 15, and the rear end of the grinding mounting plate 15 is fixedly equipped with a grinding motor 71. The motor 71 drives the grinding wheel spindle 70 to rotate through the transmission belt 72 .

The front end of the grinding mounting plate 15 is provided with a spindle mounting seat 74, and the spindle mounting seat 74 is provided with a fitting 741 adapted to the grinding wheel spindle 70, and the fitting 741 is integrally connected with the spindle mounting seat 74, And one side of the fitting 741 is provided with an elastic opening 742 , the grinding wheel spindle 70 is installed on the spindle mounting seat 74 through the fitting 741 , and a locking bolt is arranged at the elastic opening 742 . A first positioning ring 703 is set outside the middle of the grinding wheel spindle 70, and a second positioning ring 704 is set outside the first positioning ring 703. Between the first positioning ring 703 and the outer surface of the grinding wheel spindle 70, And there is a gap between the outer surface of the second positioning ring 704 and the first positioning ring 703, the upper and lower end faces of the first positioning ring 703 and the second positioning ring 704 are flush, and the upper and lower ends of the grinding wheel spindle 70 A first rolling bearing set 702 and a second rolling bearing set 705 are provided respectively, and the first positioning ring 703 and the second positioning ring 704 are sandwiched between the rolling bearing sets at the upper and lower ends. The upper end of the grinding wheel main shaft 70 is provided with a main shaft protective cover 73, and the side of the main shaft protective cover 73 facing the motor is provided with an opening 731, and the transmission belt 72 is connected with the grinding wheel main shaft 70 through the opening. The upper end is provided with an anti-skid groove 701 corresponding to the transmission belt 72, and the upper end of the anti-skid groove 701 is provided with a third rolling bearing set 707, and the upper end of the grinding wheel main shaft 70 is rotationally connected with the main shaft shield 73 through the third rolling bearing set 707.

The front end of the grinding base 11 is provided with a clamping shaft mount 61, and both sides of the clamping shaft mount 61 are provided with a longitudinally extending second guide rail 62, and the second guide rail 62 is provided with a clamping shaft. Slider 63, the clamping shaft mount 61 is provided with a clamping cylinder 65 that drives the clamping slide 63 to move up and down along the second guide rail 62, and the clamping cylinder 65 is connected to the clamping slide through a connecting piece 64 connect. The two lens clamping shafts 60 are rotatably mounted on the corresponding clamping slides 63 through bearings. The bottom of the clamping shaft mounting seat is provided with a rotating shaft mounting seat 51, and the two lens rotating shafts 50 are respectively installed on both sides of the upper end of the rotating shaft mounting seat 51 through bearings, and the corresponding rotating shaft below the lens rotating shaft 50 A rotating motor 54 is fixedly mounted on the mounting base 51 , and the rotating motor 54 drives the lens rotating shaft 50 to rotate through a gear set 55 . The bottom of the clamping shaft mounting base 61 is provided with a longitudinally extending third guide rail 52, the rotating shaft mounting base 51 is slidably connected with the third guide rail 52 through a slider 53, and the base 10 is provided with a driving clamp. The tightening shaft mounting base 61 is an elevating motor 58 that slides along the third guide rail 52 , the output shaft of the elevating motor 58 is drivingly connected to the elevating screw rod 56 , and the elevating screw rod 56 is threadedly connected to the clamping shaft mounting base 61 .

As shown in Figure 7, the retrieving manipulator 40 includes a fourth guide rail 41 arranged between two groups of positioning mechanisms 30, the fourth guide rail 41 is provided with a retrieving slide 42, and the retrieving slide 42 There is a first mounting plate 43 on the top, and the rear end of the first mounting plate 43 is provided with a lifting cylinder 431 and a second mounting plate 44 driven up and down by the lifting cylinder 431. The second mounting plate 44 is provided with a flip The cylinder 45 and the retrieving shaft 46 driven and rotated by the overturning cylinder 45 are provided with suction heads 47 at both ends of the retrieving shaft 46 , and suction discs 48 are provided at the upper and lower ends of the suction head 47 . The output shaft of the overturning cylinder 45 is connected with a driving rack 451, and the middle part of the reclaiming shaft 46 is provided with an outer tooth pattern 461 that is aligned with the driving rack 451. The cooperation of the teeth 461 drives the retrieving shaft 46 to rotate. Rolling bearings are arranged on the both sides of the external tooth pattern 461 on the described material taking shaft 46, and the rear end of the second mounting plate 44 is rotatably installed on the described material taking shaft 46 through the rolling bearings, and the external teeth of the material taking shaft 46 A guide groove adapted to the driving rack 451 is provided below the groove 461, and the driving rack 451 is movably installed in the guide groove. The front and rear sides of the lift cylinder 431 are provided with linear bearings 432 , and guide rods 433 are provided in the linear bearings 432 , and the upper ends of the guide rods 433 are fixedly connected with the second mounting plate 44 .

As shown in Figures 8-9, each set of positioning mechanisms 30 includes a positioning base 31 fixedly installed on the machine base 10, and the positioning base 31 is provided with a vertically arranged support rod 311, and the support rod The upper end of 311 is provided with positioning base plate 32, and described positioning base plate 32 is provided with the first adjusting block 33 and the first adjusting handle 324 that controls the activity of first adjusting block 33, and described first adjusting block 33 is provided with the second adjusting block 33. Block 34 and the second adjustment handle 334 that controls the movement of the second adjustment block 34, the second adjustment block 34 is provided with a positioning plate 35, and the middle part of the positioning plate 35 is provided with a positioning block 352, and the positioning block 352 is opposite to each other. Limiting blocks 351 are arranged on the adjacent two side edges, and the upper end surface of the limiting block 351 is higher than the upper surface of the positioning block 352, and the second vacuum suction hole 353 for absorbing the lens 100 is provided on the positioning block 352 .

The upper surface of the positioning bottom plate 32 is provided with a first adjustment seat 321, and the first adjustment seat 321 is provided with a first accommodating cavity with an upward opening, and a first adjusting guide rail 322 is provided in the first accommodating cavity, The first adjusting block 33 is slidably connected with the first adjusting guide rail 322 through the first adjusting slider 323, the first adjusting block 33 is provided with a first chute opening downward, and the first adjusting block 33 passes through the first adjusting rail 322. A chute cover is mounted on the outside of the first adjustment seat 321, the front side wall of the first chute is provided with a first through hole 335 for the first adjustment handle 324 to pass through, and the first accommodating cavity The corresponding side wall is provided with a first screw hole 325 for the first adjustment handle 324 to pass through, and one end of the first adjustment handle 324 passes through the first through hole 335 and the first screw hole 325 successively and connects with the first adjustment block 33 or the first adjustment slider 323 is fixedly connected. During operation, the first adjusting block 33 is moved back and forth along the first adjusting guide rail 322 by rotating the first adjusting handle 324 .

The upper surface of the first adjustment block 33 is provided with a second adjustment seat 331, and the second adjustment seat 331 is provided with a second accommodating chamber with an upward opening, and a second adjustment guide rail is provided in the second accommodating chamber 332, the second adjustment block 34 is slidably connected with the second adjustment guide rail 332 through the second adjustment slider 333, the second adjustment block 34 is provided with a second chute opening downward, and the second adjustment block 34 The second chute cover is installed on the outside of the second adjustment seat 331, and the left side wall of the second chute is provided with a second through hole 341 for the second adjustment handle 334 to pass through. The side wall corresponding to the cavity is provided with a second screw hole 336 for the second adjustment handle 334 to pass through, and one end of the second adjustment handle 334 passes through the second through hole 341 and the second screw hole 336 in turn and connects with the second screw hole 336. The adjustment block 34 or the second adjustment slider 333 is fixedly connected, and when working, the second adjustment handle 334 is rotated to make the second adjustment block 34 move left and right along the second adjustment guide rail 332 . A positioning protective cover 36 is provided below the positioning plate 35 , and a relief groove 361 is provided on the positioning protective cover 36 at positions corresponding to the first adjusting handle 324 and the second adjusting handle 334 . The front-to-back length of the first chute is greater than the front-to-back width of the first adjustment seat 321 , and the left-to-right length of the second chute is greater than the left-to-right width of the second adjustment seat 331 . The extension direction of the first adjustment guide rail 322 and the extension direction of the second adjustment guide rail 332 are perpendicular to each other in the horizontal direction.

As shown in Figures 10-11, the lower surface of the grinding wheel is provided with an inwardly concave relief groove 91, and the middle part of the relief groove 91 is provided with an outwardly protruding mounting ring 92, and the mounting ring 92 The center of the center is provided with the installation shaft hole 94 that is adapted to the lower end of the grinding wheel main shaft 70, and the installation ring 92 is provided with the installation through hole 93 of circular distribution, and the outer peripheral surface of the described grinding wheel is arranged successively from bottom to top. There is a rough grinding portion 95, a first fine grinding portion 96, a second fine grinding portion 97 and a third fine grinding portion 98, the rough grinding portion 95 is a circumferential surface flush with the outer circumferential surface of the grinding wheel, and the second The first fine grinding part 96 , the second fine grinding part 97 and the third fine grinding part 98 are arc-shaped grooves arranged on the outer peripheral surface of the grinding wheel. In the utility model, the rough grinding part is 400 mesh alloy sand, the first fine grinding part and the second fine grinding part are 600 mesh alloy sand, and the third fine grinding part is 1000 mesh alloy sand. , the edge of the product is roughly ground by the rough grinding part, and then the product is finished by the first fine grinding part and the second fine grinding part, and a little margin is reserved, and finally the fine grinding is carried out by the third fine grinding part , so that the grinding accuracy of the product can reach within 5μm.

The utility model work process is as follows:

After the feeding manipulator 20 sucks two lenses 100 from the material chute 80, after turning them up 90°, the lens 100 is taken to the positioning mechanism 30 for positioning. The limit block 351 of the positioning block 351 conflicts, so that the lens 100 is at the center position of the positioning block 352. After positioning, the second vacuum suction hole 353 on the positioning block 352 sucks the lens 100, and then, the retrieving manipulator 40 sucks the lens 100 from the positioning mechanism 30. Position the lens 100, and take the lens 100 to the lens clamping mechanism. The retrieving manipulator 40 rotates 180° first, so that the vacant suction plate 48 rotates downward for absorbing the processed lens 100, and then the retrieving manipulator 40 Rotate 1800, put the lens 100 to be processed on the upper end of the lens rotating shaft 50, then the lens clamping shaft 60 moves down to clamp the lens 100, and then, the feed motor 12 drives the feed slide 13 to move, so that the lens mounted on the grinding wheel The grinding wheel on the main shaft 70 moves to the lens 100 to be processed, and the grinding wheel shaft is driven by the grinding motor 71 to rotate, and at the same time, the rotating motor 54 drives the lens rotating shaft 50 to rotate through the gear set. Thereby, the utility model realizes the grinding of the edge of the lens through the four-axis linkage of the feeding manipulator, the rotation of the lens by the rotation axis of the lens, and the rotation of the grinding wheel by the grinding motor.

The above are only preferred embodiments of the present utility model, and are not intended to limit the present utility model, so any modifications, equivalent replacements, improvements, etc. made to the above embodiments according to the technical practice of the present utility model are still valid. It belongs to the scope of the technical solution of the utility model.

Claims (10)

1. A numerically controlled precision double-station grinder, characterized in that: it comprises a machine base, on which a feeding mechanism, a positioning mechanism and a grinding mechanism are arranged successively along the lens feeding direction, and the positioning mechanism and the grinding mechanism Two groups are provided and arranged side by side. The feeding mechanism includes a plurality of troughs for placing lenses and a feeding manipulator for taking the lenses in the troughs to the positioning mechanism for positioning. The positioning of the two groups A retrieving manipulator for taking the positioned lens to the grinding mechanism is arranged between the mechanisms, and each group of the grinding mechanism includes a lens clamping mechanism and a grinding wheel driving mechanism, and the lens clamping mechanism includes a lens rotating shaft and a grinding wheel drive mechanism. The lens clamping shaft, the grinding wheel driving mechanism includes a grinding wheel and a grinding wheel spindle, the lens rotating shaft is rotatably mounted on the rear side of the positioning mechanism, and the lens clamping shaft is mounted on the side of the lens rotating shaft movably up and down Above, the grinding wheel spindle is rotatably installed on the rear side of the lens rotating shaft. The grinding wheel is mounted on the grinding wheel spindle and can be driven by the grinding wheel spindle. A vacuum suction hole. 2. The CNC precision double-station grinding machine according to claim 1, characterized in that: the rear end of the base is provided with a grinding base, and the grinding base is provided with a feeding slide, a feeding wire Rod and feed motor, the two sides of the grinding base are provided with a first guide rail parallel to the feeding direction, the two sides of the feed slide are slidably connected with the first guide rail, and the feed screw rod is arranged on The upper end of the base is ground, and the front end of the feed screw rod passes through the feed slide seat and is threadedly connected with the feed slide seat, and the rear end of the feed screw rod is connected with the feed motor drive, and the two sides of the feed slide seat Both are provided with a grinding mounting plate, and the two grinding wheel spindles are rotatably mounted on the front ends of the corresponding grinding mounting plates, and a grinding motor is fixedly installed at the rear end of the grinding mounting plate, and the grinding motor drives the grinding wheel spindle through a transmission belt. turn. 3. The numerical control precision double-station grinding machine according to claim 2, characterized in that: the front end of the grinding installation plate is provided with a spindle mounting seat, and the spindle mounting seat is provided with a fitting fitting for the grinding wheel spindle. part, the grinding wheel spindle is installed on the spindle mounting seat through a fitting, a first positioning ring is set outside the middle of the grinding wheel spindle, a second positioning ring is set outside the first positioning ring, and the first positioning ring is set outside the first positioning ring. There is a gap between the positioning ring and the outer surface of the grinding wheel spindle, and between the second positioning ring and the outer surface of the first positioning ring. The upper and lower end surfaces of the first positioning ring and the second positioning ring are flush. The upper and lower ends of the grinding wheel main shaft are respectively provided with a first rolling bearing group and a second rolling bearing group, the first positioning ring and the second positioning ring are sandwiched between the rolling bearings at the upper and lower ends, and the upper end of the grinding wheel main shaft is provided with a main shaft protective cover , the side of the main shaft protective cover facing the motor is provided with an opening, the transmission belt passes through the opening and is connected to the grinding wheel main shaft, and the upper end of the grinding wheel main shaft is provided with an anti-skid groove corresponding to the transmission belt. 4. The CNC precision double-station grinding machine according to claim 2, characterized in that: the front end of the grinding base is provided with a clamping shaft mounting seat, and both sides of the clamping shaft mounting seat are provided with longitudinal The extended second guide rail is provided with a clamping slide, and the clamping shaft mounting seat is provided with a clamping cylinder that drives the clamping slide to move up and down along the second guide rail. The two lenses The clamping shaft is rotatably mounted on the corresponding clamping slide seat through the bearing, the rotating shaft mounting seat is provided under the clamping shaft mounting seat, and the two lens rotating shafts are respectively mounted on the rotating shaft mounting seat through the bearing On both sides of the upper end, a rotating motor is fixedly installed on the rotating shaft mounting seat below the corresponding lens rotating shaft, and the rotating motor drives the rotating shaft of the lens to rotate through a gear set. 5. The CNC precision double-station grinding machine according to claim 4, characterized in that: a third guide rail extending longitudinally is provided below the mounting seat of the clamping shaft, and the mounting seat of the rotating shaft connects with the first rail through a slider. The three guide rails are slidingly connected, and the base is provided with a lifting motor for driving the clamping shaft mounting seat to slide along the third guide rail. The shaft mount is threaded. 6. The CNC precision double-station grinding machine according to claim 1, characterized in that: the reclaiming manipulator includes a fourth guide rail arranged between two sets of positioning mechanisms, and the fourth guide rail is provided with a reclaimer. A slide seat, the first mounting plate is provided on the reclaiming slide seat, the rear end of the first mounting plate is provided with a lifting cylinder and a second mounting plate that is driven up and down by the lifting cylinder, and the second mounting plate is There is an overturning cylinder and a retrieving shaft driven by the overturning cylinder. Both ends of the retrieving shaft are provided with suction heads, and the upper and lower ends of the suction head are provided with suction plates. The overturning cylinder The output shaft is connected with a driving rack, and the middle part of the reclaiming shaft is provided with an external tooth pattern that is opposite to the driving rack, and the overturning cylinder drives the retrieving shaft to rotate through the cooperation of the driving rack and the external toothing. 7. The CNC precision double-station grinding machine according to claim 6, characterized in that: the reclaiming shaft is provided with rolling bearings on both sides of the outer tooth pattern, and the reclaiming shaft is rotatably installed on the At the rear end of the second mounting plate, a guide groove adapted to the drive rack is provided below the outer tooth pattern of the reclaiming shaft, and the drive rack is movably installed in the guide groove, and the lift cylinder Linear bearings are provided on the front and rear sides, and guide rods are provided in the linear bearings, and the upper ends of the guide rods are fixedly connected to the second mounting plate. 8. The CNC precision double-station grinding machine according to claim 1, characterized in that: each set of positioning mechanisms includes a positioning base fixedly mounted on the machine base, and the positioning base is provided with a vertical The support rod, the upper end of the support rod is provided with a positioning base plate, the positioning base plate is provided with a first adjustment block and a first adjustment handle for controlling the movement of the first adjustment block, and a second adjustment handle is provided on the first adjustment block. An adjustment block and a second adjustment handle that controls the movement of the second adjustment block. The second adjustment block is provided with a positioning plate, the middle of the positioning plate is provided with a positioning block, and the adjacent two sides of the positioning block are provided with limiting The position stopper, the upper end surface of the limit stopper is higher than the upper surface of the positioning block, and the second vacuum suction hole for absorbing the lens is arranged on the positioning block. 9. The CNC precision double-station grinding machine according to claim 8, characterized in that: the upper surface of the positioning bottom plate is provided with a first adjustment seat, and the first adjustment seat is provided with a first accommodating opening with an upward direction. cavity, the first accommodating cavity is provided with a first adjustment guide rail, the first adjustment block is slidingly connected with the first adjustment guide rail through a first adjustment slider, and the first adjustment block is provided with a second opening downward. A chute, the first adjustment block is installed on the outside of the first adjustment seat through the first chute cover, and one side wall of the first chute is provided with a first through hole for the first adjustment handle to pass through The side wall corresponding to the first accommodating cavity is provided with a first screw hole for the first adjustment handle to pass through, and one end of the first adjustment handle passes through the first through hole and the first screw hole in sequence and then connects with the first screw hole. The first adjustment block or the first adjustment slider is fixedly connected, the upper surface of the first adjustment block is provided with a second adjustment seat, and the second adjustment seat is provided with a second accommodating cavity with an upward opening. A second adjustment guide rail is provided in the accommodating cavity, and the second adjustment block is slidingly connected with the second adjustment guide rail through the second adjustment slider. The second adjustment block is provided with a second chute opening downward, and the The second adjustment block is installed on the outside of the second adjustment seat through the second chute cover, and one side wall of the second chute is provided with a second through hole for the second adjustment handle to pass through. The side wall corresponding to the cavity is provided with a second screw hole for the second adjustment handle to pass through, and one end of the second adjustment handle passes through the second through hole and the second screw hole in turn, and then connects with the second adjustment block or the second screw hole. The two adjustment sliders are fixedly connected, a positioning protective cover is provided under the positioning plate, and a relief slot is provided on the positioning protective cover corresponding to the positions of the first adjusting handle and the second adjusting handle. 10. The CNC precision double-station grinding machine according to claim 1, characterized in that: the lower surface of the grinding wheel is provided with an inwardly concave relief groove, and the middle part of the said relief groove is provided with an outwardly convex The center of the mounting ring is provided with a mounting shaft hole adapted to the lower end of the grinding wheel spindle, and the mounting ring is provided with annularly distributed mounting through holes. The outer peripheral surface of the grinding wheel is from A rough grinding part, a first fine grinding part, a second fine grinding part and a third fine grinding part are provided in sequence from bottom to top, the rough grinding part is a circumferential surface flush with the outer circumferential surface of the grinding wheel, and the first The first fine grinding part, the second fine grinding part and the third fine grinding part are arc-shaped grooves arranged on the outer peripheral surface of the grinding wheel.