An encoder code disk surface jump detection device

Abstract

The present invention discloses a device for detecting the jumping of the encoder code disk surface, which relates to the technical field of disk surface jumping detection. The present invention includes an operating table, on the left side of the top surface of the operating table, a motor is fixedly installed, on the right side of the rotating shaft of the motor, a chuck is fixed, on the left side of the top surface of the operating table, a photosensor is fixedly installed, the photosensor is located below the chuck, on the right side of the top surface of the operating table, a laser emitter is fixedly installed, on the right side of the top surface of the operating table, a pressing disk assembly is arranged, the pressing disk assembly includes a frame, the frame is fixedly installed on the right side of the top surface of the operating table, the frame is located on the right side of the laser emitter, in the middle of the top surface of the frame, an electric telescopic rod is fixedly installed, and on the left end of the electric telescopic rod, a concave disk is fixed. The present invention rotates the grating disk by means of the rubber block, thereby avoiding the problem that the grating detection of the code disk surface is inaccurate due to the rotation deviation of the grating disk on the chuck.

Description

Technical Field

[0001] The present invention relates to the technical field of disk surface skip detection, and specifically to an encoder disk surface skip detection device. Background Art

[0002] The working principle of an optoelectronic encoder is based on the grating effect. When a light source irradiates the grating disk, the light passing through the grating is captured by an optoelectronic detection device, generating a series of pulse signals. The quantity and frequency of these signals reflect the rotational speed and direction information of the encoder. The main function of the encoder disk surface skip detection device is to detect whether skip codes occur during the rotation of the encoder disk, which is crucial for ensuring the accuracy and reliability of the encoder.

[0003] The patent with the patent number CN207688821U discloses an encoder disk surface skip detection device. The device includes an encoder, a rotating motor, a disk to be measured, a displacement sensor, and a translation stage. The front output shaft of the rotating motor is installed with the encoder, the rear output shaft of the rotating motor is installed with the disk to be measured, the displacement sensor is connected to the translation stage, the encoder controls the rotating motor to rotate at a constant speed, the rotating motor drives the disk to be measured to rotate, the translation stage drives the displacement sensor to move, and the displacement sensor measures the displacement offset of the disk to be measured in the vertical direction. Compared with the prior art, this patent has the advantages of high precision and strong scalability.

[0004] However, the current encoder disk surface skip detection device has the following problems: When this encoder disk surface skip detection device is in use, during the detection of the grating disk, when the grating disk rotates, under the action of centrifugal force, the grating disk is prone to shift on the chuck, resulting in inaccurate grating detection on the disk surface. Therefore, we propose an encoder disk surface skip detection device. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides an encoder disk surface skip detection device, which solves the problems raised in the above background art.

[0006] To achieve the above objectives, the present invention is realized through the following technical solutions: An encoder disk surface skip detection device includes an operating table. A motor is fixedly installed on the left side of the top surface of the operating table. A chuck is fixed to the right side of the rotating shaft of the motor. A photosensor is fixedly installed on the left side of the top surface of the operating table. The photosensor is located below the chuck. A laser emitter is fixedly installed on the right side of the top surface of the operating table. A pressing disk assembly is arranged on the right side of the top surface of the operating table.

[0007] The pressure plate assembly includes a frame which is fixedly installed on the right side of the top surface of the operating table. The frame is located on the right side of the laser emitter. In the middle of the top surface of the frame, an electric telescopic rod is fixedly installed. The left end of the electric telescopic rod is fixed with a concave plate. In the middle of the left side of the concave plate, a concave hole is formed. On the inner wall of the concave hole of the concave plate, a resisting plate is rotatably installed. The resisting plate is located on the right side of the clamping plate. On the left side of the resisting plate, three rubber blocks are fixedly installed. During the rotation detection of the grating disc, the rubber blocks resist the rotation of the grating disc, preventing the grating disc from rotating and shifting on the clamping plate. An aftercheck component is arranged on the outer wall of the concave plate;

[0008] The aftercheck component includes an annular plate which is fixed on the outer wall of the concave plate. In the middle of the top surface of the annular plate, a vertical plate is fixed. At the top left of the vertical plate, a short rod penetrates and is fixed. The left end of the short rod is fixed with a sponge block. The sponge block is located above the resisting plate. The sponge block contacts the disc surface of the grating disc, and the sponge block wipes the disc surface of the grating disc;

[0009] On the front and back of the middle of the annular plate, an anti-shake device is arranged. On the right side of the outer wall of the anti-shake device, a light-shielding device is arranged.

[0010] According to the above technical solution, the clamping plate clamps a grating disc on the right side. On the top right of the photosensor, a photosensitive plate is arranged. The emitting head on the left side of the laser emitter is aligned with the photosensitive plate of the photosensor. The middle of the right side of the grating disc on the clamping plate is on the movement track of the three rubber blocks. The right edge of the grating disc on the clamping plate is on the movement track of the sponge block.

[0011] According to the above technical solution, the anti-shake device includes two L-shaped rods, two U-shaped plates, two rollers and two concave strip plates. The two L-shaped rods are fixed in the middle of the front and back of the annular plate. The two U-shaped plates are respectively fixed on the bottom surfaces of the two L-shaped rods. The two rollers are respectively rotatably installed on the inner walls of the U-shaped plates. The two concave strip plates are fixed on the top surface of the operating table. The two concave strip plates are respectively located in front of and behind the frame. The rollers roll leftward in the concave strip plates. Under the action of friction, the leftward movement of the concave plate is less jittery.

[0012] According to the above technical solution, the anti-shake device further includes two straight rods, two magnetic disks and two iron plates. The two straight rods respectively penetrate and are fixed at the bottom left of the two L-shaped rods. The two magnetic disks are respectively fixed at the left ends of the two straight rods. The two iron plates are respectively fixed at the left ends of the two concave strip plates. Under the action of magnetic force, the magnetic disks are adsorbed on the iron plates, preventing the rubber blocks on the resisting plate from continuously squeezing the grating disc.

[0013] According to the above technical solution, the inner bottom ends of the two concave strip plates are in rotational contact with the outer walls of the two rollers. The top right parts of the two iron plates are respectively on the movement tracks of the two magnetic disks.

[0014] According to the above technical solution, the light-shielding device includes two ring-shaped straight blocks, two rectangular plates, a U-shaped light-shielding plate, two sliding columns and two L-shaped groove plates. The two ring-shaped straight blocks are respectively fixed on the outer right sides of the two straight rods. The two ring-shaped straight blocks are respectively located on the right sides of the two L-shaped rods. The two rectangular plates are respectively fixed on the opposite sides of the two ring-shaped straight blocks. The U-shaped light-shielding plate is fixed on the side where the two rectangular plates are close to each other. The two sliding columns are fixed on the bottoms of the front and back sides of the U-shaped light-shielding plate. The two L-shaped groove plates are fixed on the top surface of the operating table. The two L-shaped groove plates are respectively located on one side close to the opposite sides of the two concave strip plates. Groove openings are respectively formed at the bottoms of the opposite sides of the two L-shaped groove plates. The inner walls of the groove openings of the two L-shaped groove plates are in sliding contact with the outer walls of the two sliding columns. The U-shaped light-shielding plate covers above the laser emitter, so that the laser emitted by the laser emitter will not be interfered by strong light.

[0015] According to the above technical solution, the light-shielding device further includes two U-shaped frames, two sliding plates, two rubber pads, two arc-shaped elastic pieces and two L-shaped plates. The two U-shaped frames are respectively fixed on the sides where the two sliding columns are away from each other. The two sliding plates are slidably installed on the inner walls of the two U-shaped frames. The two rubber pads are respectively fixed on the left sides of the two sliding plates. The two arc-shaped elastic pieces are respectively fixed on the right sides of the sides where the two sliding plates are away from each other. The ends of the two arc-shaped elastic pieces away from the sliding plates are fixedly connected to the sides where the two U-shaped frames are away from each other. The two L-shaped plates are respectively fixed on the left sides of the sides where the two L-shaped groove plates are away from each other. Under the elastic force of the arc-shaped elastic pieces, the rubber pads are pressed against the L-shaped plates, so that the U-shaped light-shielding plate will not contact the disk surface of the grating disk.

[0016] According to the above technical solution, the U-shaped light-shielding plate is located on the left side of the frame, and the two L-shaped plates are respectively on the movement tracks of the two rubber pads.

[0017] The present invention provides an encoder code disk surface jump detection device, which has the following beneficial effects:

[0018] (1) In the present invention, through the cooperation of the frame, the electric telescopic rod, the concave disk, the abutting disk, the rubber block, the ring plate, the vertical plate and the short rod with the sponge block, the abutting disk drives the rubber block to move leftward. During the leftward movement of the rubber block, the rubber block contacts the grating disk. Under the action of friction, the grating disk drives the rubber block to rotate. The rubber block drives the abutting disk to rotate. The abutting disk rotates in the concave disk. During the rotation detection of the grating disk, the rubber block abuts against the grating disk to rotate, so that the grating disk will not rotate and shift on the chuck, preventing the inaccurate grating detection on the code disk surface caused by the rotation and shift of the grating disk on the chuck. And the short rod drives the sponge block to move leftward. The sponge block contacts the disk surface of the grating disk. During the rotation of the grating disk, the sponge block wipes the disk surface of the grating disk, preventing the detection effect from being poor due to foreign objects blocking the disk surface of the grating disk.

[0019] (2) Through the setting of the anti-shake device in the present invention, the L-shaped rod, U-shaped plate, roller, concave strip plate, straight rod and magnetic disk cooperate with the iron plate. The U-shaped plate drives the roller to move leftward, and the roller rolls leftward in the concave strip plate. Under the action of friction, the jitter when the concave disk moves leftward is reduced, preventing the concave disk from generating severe jitter and resulting in poor pressing effect. And under the action of magnetism, the magnetic disk is adsorbed on the iron plate, so that the rubber block on the pressing disk will not continue to squeeze the grating disk, preventing the grating disk from being damaged due to excessive extrusion by the rubber block.

[0020] (3) Through the setting of the light-shielding device in the present invention, the annular straight block, rectangular plate, U-shaped light-shielding plate, sliding column, L-shaped groove plate, return-shaped frame, sliding plate, rubber pad and arc-shaped elastic piece cooperate with the L-shaped plate. The U-shaped plate drives the roller to move leftward, and the roller rolls leftward in the concave strip plate. Under the action of friction, the jitter when the concave disk moves leftward is reduced, preventing the concave disk from generating severe jitter and resulting in poor pressing effect. And under the action of magnetism, the magnetic disk is adsorbed on the iron plate, so that the rubber block on the pressing disk will not continue to squeeze the grating disk, preventing the grating disk from being damaged due to excessive extrusion by the rubber block. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of the whole of the present invention;

[0022] Figure 2 is a cross-sectional schematic diagram on the right side of the whole of the present invention;

[0023] Figure 3 is a cross-sectional schematic diagram at the frame of the present invention;

[0024] Figure 4 is of the present invention Figure 3 a partial enlarged schematic diagram at A in;

[0025] Figure 5 is a schematic diagram of the anti-shake device of the present invention;

[0026] Figure 6 is of the present invention Figure 5 a partial enlarged schematic diagram at B in;

[0027] Figure 7 is a schematic diagram of the light-shielding device of the present invention;

[0028] Figure 8 is of the present invention Figure 7 a partial enlarged schematic diagram at C in.

[0029] In the figure: 1. Operating table; 2. Motor; 3. Chuck; 4. Photosensor; 5. Laser emitter; 31. Pressing plate assembly; 311. Frame; 312. Electric telescopic rod; 313. Concave plate; 314. Supporting plate; 315. Rubber block; 32. Rechecking plate assembly; 321. Ring plate; 322. Vertical plate; 323. Short rod; 324. Sponge block; 6. Anti-shake device; 61. L-shaped rod; 62. U-shaped plate; 63. Roller; 64. Concave strip plate; 65. Straight rod; 66. Disk; 67. Iron plate; 7. Light-shielding device; 71. Ring straight block; 72. Rectangular plate; 73. U-shaped light-shielding plate; 74. Slide column; 75. L-shaped groove plate; 76. Return-shaped frame; 77. Slide plate; 78. Rubber pad; 79. Arc-shaped elastic piece; 710. L-shaped plate. Detailed implementation manners

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0031] Please refer to Figures 1-8 , an embodiment of the present invention is: An encoder code disk surface jump detection device, including an operating table 1, a motor 2 is fixedly installed on the left side of the top surface of the operating table 1, a chuck 3 is fixed on the right side of the rotating shaft of the motor 2, a photosensor 4 is fixedly installed on the left side of the top surface of the operating table 1, the photosensor 4 is located below the chuck 3, a laser emitter 5 is fixedly installed on the right side of the top surface of the operating table 1, a grating disk is clamped on the right side of the chuck 3, a photosensitive plate is arranged at the top right side of the photosensor 4, and the emitting head on the left side of the laser emitter 5 is aligned with the photosensitive plate of the photosensor 4;

[0032] On the right side of the top surface of the operating table 1, there is a pressing plate assembly 31. The pressing plate assembly 31 includes a frame 311. The frame 311 is fixedly installed on the right side of the top surface of the operating table 1. The frame 311 is located on the right side of the laser emitter 5. In the middle of the top surface of the frame 311, there is an electric telescopic rod 312 fixedly installed. At the left end of the electric telescopic rod 312, there is a concave plate 313. In the middle of the left side of the concave plate 313, there is a concave hole. On the inner wall of the concave hole of the concave plate 313, there is a counter plate 314 rotatably installed. The counter plate 314 is located on the right side of the chuck 3. On the left side of the counter plate 314, there are three rubber blocks 315 fixedly installed. In the middle of the right side of the grating disk on the chuck 3 is in the movement track of the three rubber blocks 315. The counter plate 314 drives the rubber blocks 315 to move leftward. During the leftward movement of the rubber blocks 315, the rubber blocks 315 come into contact with the grating disk. Under the action of friction, the grating disk drives the rubber blocks 315 to rotate. The rubber blocks 315 drive the counter plate 314 to rotate. The counter plate 314 rotates in the concave plate 313. During the rotation detection of the grating disk, the rubber blocks 315 press against the grating disk to rotate, so that the grating disk will not rotate and shift on the chuck 3, avoiding inaccurate grating detection on the code disk surface when the code disk surface jump detection device detects the grating disk due to the rotation and shift of the grating disk on the chuck 3.

[0033] On the outer wall of the concave plate 313, there is a disk review assembly 32. The disk review assembly 32 includes an annular plate 321. The annular plate 321 is fixed on the outer wall of the concave plate 313. In the middle of the top surface of the annular plate 321, there is a vertical plate 322 fixedly installed. At the left top of the vertical plate 322, there is a short rod 323 passing through and fixedly installed. At the left end of the short rod 323, there is a sponge block 324. The sponge block 324 is located above the counter plate 314. The right edge of the grating disk on the chuck 3 is in the movement track of the sponge block 324. The short rod 323 drives the sponge block 324 to move leftward. The sponge block 324 comes into contact with the disk surface of the grating disk. During the rotation of the grating disk, the sponge block 324 wipes the disk surface of the grating disk, avoiding poor detection effect caused by foreign objects blocking the disk surface of the grating disk when the code disk surface jump detection device detects the grating disk.

[0034] During use, the operating table 1 supports the motor 2. The staff installs the grating disk on the chuck 3 on the rotating shaft of the motor 2. The staff starts the motor 2, and the rotating shaft on the motor 2 starts to rotate forward. The rotating shaft of the motor 2 drives the chuck 3 to rotate forward, and the chuck 3 drives the grating disk to rotate forward. At the same time, the staff starts the laser emitter 5 on the operating table 1. The emitter of the laser emitter 5 emits laser light onto the rotating grating disk. During the rotation of the grating disk, the laser light passing through the grating disk is sensed by the photosensitive plate of the photosensor 4. The photosensor 4 can thus detect the rotational speed and direction information of the grating disk. Since during the detection of the grating disk, when the grating disk rotates, under the action of centrifugal force, the grating disk is likely to shift on the chuck 3. When the staff starts the motor 2, the operating table 1 supports the frame 311. The staff starts the electric telescopic rod 312 on the frame 311, and the telescopic end of the electric telescopic rod 312 starts to move leftward. The telescopic end of the electric telescopic rod 312 drives the concave disk 313 to move leftward, the concave disk 313 drives the abutting disk 314 to move leftward, the abutting disk 314 drives the rubber block 315 to move leftward. During the leftward movement of the rubber block 315, the rubber block 315 contacts the grating disk. Under the action of friction, the grating disk drives the rubber block 315 to rotate. The rubber block 315 drives the abutting disk 314 to rotate, and the abutting disk 314 rotates in the concave disk 313. Such that during the rotational detection of the grating disk, the rubber block 315 abuts against the rotating grating disk, preventing the grating disk from rotating and shifting on the chuck 3, and preventing the grating disk from rotating and shifting on the chuck 3 during the detection of the device, thereby avoiding the problem that the grating detection on the code disk surface is inaccurate due to the rotation and shift of the grating disk on the chuck 3 when the code disk surface jump detection device detects the grating disk.

[0035] While the telescopic end of the electric telescopic rod 312 drives the concave disk 313 to move leftward, the concave disk 313 drives the ring plate 321 to move leftward, the ring plate 321 drives the vertical plate 322 to move leftward, the vertical plate 322 drives the short rod 323 to move leftward, and the short rod 323 drives the sponge block 324 to move leftward. The sponge block 324 contacts the disk surface of the grating disk. During the rotation of the grating disk, the sponge block 324 wipes the disk surface of the grating disk, preventing foreign matter from blocking the disk surface of the grating disk during the use of the device, thereby avoiding the problem that the detection effect is poor due to foreign matter blocking the disk surface of the grating disk when the code disk surface jump detection device detects the grating disk.

[0036] Please refer to Figures 1-8, on the basis of the above embodiments, in another embodiment of the present invention, it further includes an anti-shake device 6 and a light-shielding device 7. Among them, the anti-shake device 6 is arranged in the middle of the front and back sides of the ring plate 321. The anti-shake device 6 includes two L-shaped rods 61, two U-shaped plates 62, two rollers 63 and two concave strip plates 64. The two L-shaped rods 61 are fixed in the middle of the front and back sides of the ring plate 321. The two U-shaped plates 62 are respectively fixed to the bottom surfaces of the two L-shaped rods 61. The two rollers 63 are respectively rotatably installed on the inner walls of the U-shaped plates 62. The two concave strip plates 64 are fixed to the top surface of the operation table 1. The two concave strip plates 64 are respectively located in the front and back of the frame 311. The inner bottom ends of the two concave strip plates 64 are in rotational contact with the outer walls of the two rollers 63. The U-shaped plate 62 drives the roller 63 to move leftward, and the roller 63 rolls leftward in the concave strip plate 64. Under the action of friction, the jitter when the concave disk 313 moves leftward is reduced, and it is avoided that when the code disk surface jump detection device detects the grating disk, the concave disk 313 generates severe jitter resulting in poor pressing effect.

[0037] The anti-shake device 6 further includes two straight rods 65, two magnetic disks 66 and two iron plates 67. The two straight rods 65 respectively penetrate and are fixed to the left bottom sides of the two L-shaped rods 61. The two magnetic disks 66 are respectively fixed to the left ends of the two straight rods 65. The two iron plates 67 are respectively fixed to the left ends of the two concave strip plates 64. The right top parts of the two iron plates 67 are respectively on the movement trajectories of the two magnetic disks 66. Under the action of magnetic force, the magnetic disk 66 is adsorbed on the iron plate 67, so that the rubber block 315 on the abutting disk 314 does not continue to press the grating disk, and it is avoided that when the code disk surface jump detection device detects the grating disk, the grating disk is damaged due to excessive extrusion by the rubber block 315.

[0038] The light-shielding device 7 is arranged on the right side of the outer wall of the anti-shake device 6. The light-shielding device 7 includes two ring straight blocks 71, two rectangular plates 72, a U-shaped shielding plate 73, two sliding columns 74 and two L-shaped groove plates 75. The two ring straight blocks 71 are respectively fixed to the right sides of the outer walls of the two straight rods 65. The two ring straight blocks 71 are respectively located on the right sides of the two L-shaped rods 61. The two rectangular plates 72 are respectively fixed to the opposite sides of the two ring straight blocks 71. The U-shaped shielding plate 73 is fixed to the side where the two rectangular plates 72 are close to each other. The two sliding columns 74 are fixed to the bottom of the front and back sides of the U-shaped shielding plate 73. The two L-shaped groove plates 75 are fixed to the top surface of the operation table 1. The two L-shaped groove plates 75 are respectively located on one side close to the opposite sides of the two concave strip plates 64. Groove openings are respectively formed at the bottoms of the opposite sides of the two L-shaped groove plates 75. The inner walls of the groove openings of the two L-shaped groove plates 75 are in sliding contact with the outer walls of the two sliding columns 74. The U-shaped shielding plate 73 is located on the left side of the frame 311. During the rotation of the grating disk, the U-shaped shielding plate 73 covers the laser emitter 5, so that the laser emitted by the laser emitter 5 is not interfered by strong light, and it is avoided that when the code disk surface jump detection device detects the grating disk, the laser emitted by the laser emitter 5 is interfered by strong light resulting in poor detection effect.

[0039] The shading device 7 also includes two circular frames 76, two slide plates 77, two rubber pads 78, two arc-shaped spring pieces 79 and two L-shaped plates 710. The two circular frames 76 are respectively fixed to the sides of the two sliding columns 74 away from each other. The two slide plates 77 are slidably mounted on the inner walls of the two circular frames 76. The two rubber pads 78 are respectively fixed to the left sides of the two slide plates 77. The two arc-shaped spring pieces 79 are respectively fixed to the right sides of the sides of the two slide plates 77 away from each other. One end of the two arc-shaped spring pieces 79 away from the slide plates 77 is fixedly connected to the sides of the two circular frames 76 away from each other. The two L-shaped plates 710 are respectively fixed On the left side of the side where the two L-shaped slot plates 75 are away from each other, the two L-shaped plates 710 are respectively on the movement tracks of the two rubber pads 78, and the rubber pads 78 are in contact with the L-shaped plates 710. Under the action of the extrusion force, the slide plate 77 moves rightward in the circular frame 76, and the arc-shaped spring piece 79 on the slide plate 77 is deformed. Under the elastic force of the arc-shaped spring piece 79, the rubber pad 78 rests on the L-shaped plate 710, so that the U-shaped shield plate 73 will not contact the surface of the grating disk, thereby preventing the U-shaped shield plate 73 from hitting the surface of the grating disk when the code disk surface jump detection device detects the grating disk, causing the surface of the grating disk to be easily damaged.

[0040] While the concave disk 313 drives the ring plate 321 to move left, the ring plate 321 drives the L-shaped rod 61 to move left, the L-shaped rod 61 drives the U-shaped plate 62 to move left, the U-shaped plate 62 drives the roller 63 to move left, and the roller 63 rolls left in the concave plate 64. Under the action of friction, the jitter of the concave disk 313 when it moves to the left is reduced, and the concave disk 313 is prevented from shaking violently when the equipment is in use, thereby avoiding the problem of poor pressure plate effect caused by the concave disk 313 shaking violently when the code disk surface jump detection device detects the grating disk.

[0041] When the ring plate 321 drives the L-shaped rod 61 to move to the left, the L-shaped rod 61 drives the straight rod 65 to move to the left, and the straight rod 65 drives the magnetic disk 66 to move to the left. When the magnetic disk 66 moves to the left, the magnetic disk 66 contacts the iron plate 67. Under the action of the magnetic force, the magnetic disk 66 is adsorbed on the iron plate 67, so that the rubber block 315 on the abutment plate 314 will not continue to squeeze the grating disk, thereby preventing the grating disk from being excessively squeezed by the rubber block 315 when the equipment is in use, thereby avoiding the problem of the grating disk being damaged by the rubber block 315 when the code disk surface jump detection device detects the grating disk.

[0042] While the L-shaped rod 61 drives the straight rod 65 to move leftward, the straight rod 65 drives the ring straight block 71 to move leftward, the ring straight block 71 drives the rectangular plate 72 to move leftward, the rectangular plate 72 drives the U-shaped shielding plate 73 to move leftward, the U-shaped shielding plate 73 drives the sliding column 74 to move leftward, and the sliding column 74 slides leftward in the slot of the L-shaped groove plate 75. During the rotation of the grating disk, the U-shaped shielding plate 73 covers the laser emitter 5, so that the laser emitted by the laser emitter 5 is not interfered by strong light, preventing the laser emitted by the laser emitter 5 from being interfered by strong light during the use of the device, thereby avoiding the problem that the detection effect is poor due to the interference of strong light on the laser emitted by the laser emitter 5 when the code disk surface jump detection device detects the grating disk.

[0043] While the U-shaped shielding plate 73 drives the sliding column 74 to move leftward, the sliding column 74 drives the loop frame 76 to move leftward, the loop frame 76 drives the sliding plate 77 to move leftward, the sliding plate 77 drives the rubber pad 78 to move leftward, and the rubber pad 78 contacts the L-shaped plate 710. Under the action of the extrusion force, the sliding plate 77 moves rightward in the loop frame 76, and the arc-shaped elastic piece 79 on the sliding plate 77 deforms. Under the elastic force of the arc-shaped elastic piece 79, the rubber pad 78 abuts against the L-shaped plate 710, so that the U-shaped shielding plate 73 does not contact the disk surface of the grating disk, preventing the U-shaped shielding plate 73 from knocking against the disk surface of the grating disk during the use of the device, thereby avoiding the problem that the disk surface of the grating disk is easily damaged due to the U-shaped shielding plate 73 knocking against the disk surface of the grating disk when the code disk surface jump detection device detects the grating disk.

[0044] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. An encoder code disk surface jump detection device, comprising an operating table, a motor is fixedly mounted on the left side of the top surface of the operating table, and a chuck is fixed on the right side of the motor shaft, characterized in that: A photoreceptor is fixedly installed on the left side of the top surface of the operating table, and the photoreceptor is located below the chuck. A laser transmitter is fixedly installed on the right side of the top surface of the operating table, and a pressure plate assembly is arranged on the right side of the top surface of the operating table. The pressure plate assembly includes a frame, the frame is fixedly installed on the right side of the top surface of the operating table, the frame is located on the right side of the laser transmitter, an electric telescopic rod is fixedly installed in the middle of the top surface of the frame, a concave plate is fixed on the left end of the electric telescopic rod, a concave hole is opened in the middle of the left side of the concave plate, a contact plate is rotatably installed on the inner wall of the concave hole of the concave plate, the contact plate is located on the right side of the clamping plate, three rubber blocks are fixedly installed on the left side of the contact plate, and a counter plate assembly is arranged on the outer wall of the concave plate; The re-disc assembly comprises an annular plate, which is fixed on the outer wall of the concave plate, a vertical plate is fixed in the middle of the top surface of the annular plate, a short rod is passed through and fixed on the top of the left side of the vertical plate, a sponge block is fixed on the left end of the short rod, and the sponge block is located above the abutment plate; An anti-shake device is arranged in the middle of the front and back surfaces of the ring plate, and a light shielding device is arranged on the right side of the outer wall of the anti-shake device; The right side of the chuck holds a grating disk, the top right side of the photoreceptor is provided with a photosensitive plate, the transmitter head on the left side of the laser transmitter is aligned with the photosensitive plate of the photoreceptor, the middle of the right side of the grating disk on the chuck is on the movement track of the three rubber blocks, and the right side edge of the grating disk on the chuck is on the movement track of the sponge block; The anti-shake device comprises two L-shaped rods, two U-shaped plates, two rollers and two concave strips, the two L-shaped rods are fixed in the middle of the front and back surfaces of the ring plate, the two U-shaped plates are respectively fixed on the bottom surfaces of the two L-shaped rods, the two rollers are respectively rotatably mounted on the inner walls of the U-shaped plates, the two concave strips are fixed on the top surface of the operating table, and the two concave strips are respectively located on the front and back surfaces of the frame; The anti-shake device also includes two straight rods, two magnetic disks and two iron plates. The two straight rods respectively penetrate and are fixed on the left bottom of the two L-shaped rods, the two magnetic disks are respectively fixed on the left ends of the two straight rods, and the two iron plates are respectively fixed on the left ends of the two concave strips.

2. The encoder code disk surface jump detection device according to claim 1, characterized in that: The inner bottom ends of the two concave strips are in rotational contact with the outer walls of the two rollers, and the right tops of the two iron plates are respectively located on the movement tracks of the two magnetic disks.

3. The encoder code disk surface jump detection device according to claim 2, characterized in that: The shading device includes two straight ring blocks, two rectangular plates, a U-shaped shield plate, two sliding columns and two L-shaped groove plates. The two straight ring blocks are respectively fixed on the right side of the outer wall of the two straight rods, the two straight ring blocks are respectively located on the right side of the two L-shaped rods, the two rectangular plates are respectively fixed on the opposite sides of the two straight ring blocks, the U-shaped shield plate is fixed on the side where the two rectangular plates are close to each other, the two sliding columns are fixed on the bottom of the front and back sides of the U-shaped shield plate, the two L-shaped groove plates are fixed on the top surface of the operating table, the two L-shaped groove plates are respectively located on the side opposite to the two concave strip plates, and the bottom opposite to the two L-shaped groove plates are provided with slots, and the inner walls of the slots of the two L-shaped groove plates are in sliding contact with the outer walls of the two sliding columns.

4. The encoder code disk surface jump detection device according to claim 3, characterized in that: The shading device also includes two circular frames, two slides, two rubber pads, two arc-shaped spring sheets and two L-shaped plates. The two circular frames are respectively fixed on the side of the two sliding columns away from each other, the two slides are slidably installed on the inner walls of the two circular frames, the two rubber pads are respectively fixed on the left sides of the two slides, the two arc-shaped spring sheets are respectively fixed on the right side of the side of the two slides away from each other, the ends of the two arc-shaped spring sheets away from the slides are fixedly connected to the side of the two circular frames away from each other, and the two L-shaped plates are respectively fixed on the left side of the side of the two L-shaped slot plates away from each other.

5. The encoder code disk surface jump detection device according to claim 4, characterized in that: The U-shaped shield is located on the left side of the frame, and the two L-shaped plates are respectively located on the movement tracks of the two rubber pads.

Images