阅读说明：本技术 一种光电角编码器偏心补正平台 (Eccentric platform of mending of photoelectricity angular encoder ) 是由 周丽杰 李庚航 于 2021-11-04 设计创作，主要内容包括：本发明公开了一种光电角编码器偏心补正平台,该装置包括有支撑平台、编码器定位平台、调节装置、图像提取装置、夹紧装置和旋转装置；调节装置包括有单轴直线模组、推杆、夹持座、压块、阶梯销；图像提取装置包括有三轴直线模组、转接块、相机、镜头；夹紧装置包括有齿轮、齿条、V型夹板、夹紧装置、步进电机；旋转装置包括有锥轴、联轴器、旋转装置、伺服电机；支撑平台起到支撑和固定作用；编码器定位平台起到定位和固定作用；调节装置起到调整码盘偏心的作用；图像提取装置起到提取码盘偏心距离和偏心最大处角度的作用；夹紧装置起到固定编码器外壳的作用；旋转装置起到转动码盘的作用；本发明装置能够微调编码器码盘上环形码道与其旋转轴的相对位置,使二者轴心的同轴度精度提高,从而减少码盘偏心对编码器信号稳定的影响,达到提高编码器工作效率的目的。(The invention discloses an eccentric correction platform of a photoelectric angular encoder, which comprises a supporting platform, an encoder positioning platform, an adjusting device, an image extraction device, a clamping device and a rotating device, wherein the supporting platform is arranged on the upper surface of the supporting platform; the adjusting device comprises a single-shaft linear module, a push rod, a clamping seat, a pressing block and a stepped pin; the image extraction device comprises a three-axis linear module, a switching block, a camera and a lens; the clamping device comprises a gear, a rack, a V-shaped clamping plate, a clamping device and a stepping motor; the rotating device comprises a conical shaft, a coupling, a rotating device and a servo motor; the supporting platform plays a role in supporting and fixing; the encoder positioning platform plays a role in positioning and fixing; the adjusting device plays a role in adjusting the eccentricity of the coded disc; the image extraction device plays a role in extracting the eccentric distance and the maximum eccentric angle of the code wheel; the clamping device plays a role in fixing the encoder shell; the rotating device plays a role in rotating the code disc; the device can finely adjust the relative position of the annular code channel on the code disc of the encoder and the rotating shaft thereof, so that the coaxiality precision of the axes of the annular code channel and the rotating shaft is improved, the influence of the eccentricity of the code disc on the signal stability of the encoder is reduced, and the aim of improving the working efficiency of the encoder is fulfilled.)

1. The eccentricity correction platform of the photoelectric angular encoder is characterized by comprising a supporting platform (2), an encoder positioning platform (5), an adjusting device (1), an image extraction device (3), a clamping device (4) and a rotating device (7);

the encoder positioning platform (5) is arranged above the square hole of the supporting platform (2);

the adjusting device (1) comprises a single-shaft linear module (11), a push rod (15), a clamping seat (14), a pressing block (12) and a stepped pin (13);

the single-shaft linear module (11) is arranged on the supporting platform (2) and is connected with the supporting platform through a bolt, and the moving direction of the module is vertical to the axis of the encoder; the lower end of the clamping seat (14) is arranged on the linear module slide block, and the motion direction of the clamping seat is the same as that of the linear module; a V-shaped groove is processed at the lower part of the clamping seat (14), the push rod (15) is placed in the V-shaped groove, two stepped holes are processed at the upper end of the clamping seat (14), threads are processed at the upper end of the stepped holes, and a through hole is formed at the lower end of the stepped holes; the upper end of the stepped pin (13) is provided with an external thread, the lower end is provided with a polished rod, and the outer side of the polished rod is provided with a compression spring; the stepped pin (13) is arranged in the stepped hole through threads, the polished rod penetrates through the stepped hole and is inserted into a round hole processed in the upper part of the pressing block (12), and the lower part of the pressing block (12) compresses the push rod (15);

the image extraction device (3) comprises a three-axis linear module (31), a transfer block (32), a camera (33) and a lens (34);

the X axis of the three-axis linear module (31) is arranged on the supporting platform (2) and connected through bolts; the transfer block (32) is connected with the Z axis of the three-axis linear module (31) and the camera (33); the camera (33) is connected with the lens (34) through threads;

the clamping device (4) comprises a gear (45), a rack (42), a V-shaped clamping plate (41), a clamping device (43) and a stepping motor (44);

the stepping motor (44) is connected to the encoder positioning platform (5) through a bolt; the gear (45) is connected with the rotating shaft of the stepping motor (44) through a key; rectangular guide rail grooves are processed on two sides of the rack (42); two parallel rectangular guide rails are processed on the upper plane of the encoder positioning platform (5) and the inner side of the rotating device (73); the rack (42) is meshed with the gear (45) and is arranged on the encoder positioning platform (5) through a rectangular guide rail; the rotating device (73) is connected with the encoder positioning platform (5) through a bolt;

the rotating device (7) comprises a conical shaft (71), a coupler (72), a rotating device (73) and a servo motor (74);

a rectangular skylight is processed on the side surface of the rotating device (73), the upper part of the rotating device is connected with the encoder positioning platform (5) through a bolt, and the lower part of the rotating device is connected with a servo motor (74) through a bolt; the upper part of the coupling (72) is screwed and connected with the conical shaft (71) through a side screw, and the lower part is connected with the rotating shaft of the servo motor (74) through a key.

2. The eccentric platform of claim 1, wherein: a circular truncated cone is machined on the encoder positioning platform (5), and is provided with a circular hole, the diameter of the circular hole is larger than the maximum diameter of the lower part of the encoder stepped shell, and the diameter of the circular truncated cone is smaller than the diameter of the maximum size position of the encoder shell (64); a rectangular guide rail is processed on the encoder positioning platform (5) and is matched with a rectangular guide rail groove on the rack (42).

3. The eccentric platform of claim 1, wherein: v-shaped grooves are processed in the lower portion of a clamping seat (14) of the adjusting device (1), stepped holes are formed in the upper portion of the clamping seat, threads are processed in the upper portions of the stepped holes, through holes are formed in the lower portion of the stepped holes, external threads are processed in the upper portions of stepped pins (13), the lower portion of the stepped pins is cylindrical, the diameter of the stepped pins is smaller than that of the through holes, and compression springs are arranged on the outer sides of the cylindrical pins.

4. The eccentric platform of claim 1, wherein: v-shaped clamping plates (41) in the clamping device (4) must be used in pairs, and the angles of the inclined planes of the V-shaped grooves are the same; rectangular guide rail grooves are formed in the two sides of the rack (42); the inner side of the shell of the clamping device (43) is provided with a rectangular guide rail which is matched with a rectangular guide rail groove on the rack (42).

5. The eccentric platform of claim 1, wherein: the middle coupling (72) of the rotating device (7) is composed of three parts, two ends of the middle coupling are composed of two convex claw half couplings (72), the convex claws are hollow and fan-shaped, the convex claws on two sides are in clearance fit, the middle of the middle coupling is provided with a compression spring, and the spring is in clearance fit with the inside of the coupling.

Technical Field

The invention relates to the technical field of precision assembly of encoder code discs, in particular to an eccentricity correction platform of a photoelectric angular encoder.

Background

The photoelectric shaft angle encoder is commonly used for measuring angles, lengths and speeds, has the characteristics of wide measuring range, high measuring precision, good durability and good stability, and is often visible in occasions of high precision, high frequency speed change, high frequency direction change and the like. When the photoelectric axial angle encoder works, a light source mainly passes through Moire fringes generated by slits among rectangular code channels on a code disc, and a receiving element identifies an optical signal and converts the optical signal into an electric signal to finish the process of converting angular displacement into the electric signal.

According to the working principle of the photoelectric shaft-position encoder, the working efficiency of the photoelectric shaft-position encoder is greatly influenced by the eccentric error of the rectangular code channel on the code disc. At present, most of domestic encoder enterprises adopt manual encoder code disc installation, and efficiency and precision can not be guaranteed.

Disclosure of Invention

The device can finely adjust the relative position of the annular code channel on the code disc of the encoder and the rotating shaft thereof, so that the coaxiality precision of the axes of the annular code channel and the rotating shaft is improved, the influence of the eccentricity of the code disc on the signal stability of the encoder is reduced, and the aim of improving the working efficiency of the encoder is fulfilled.

The invention is realized by adopting the following technical scheme:

the eccentric correction platform of the photoelectric angular encoder is characterized by comprising a supporting platform, an encoder positioning platform, an adjusting device, an image extracting device, a clamping device and a rotating device.

Furthermore, adjusting device is including unipolar sharp module, push rod, grip slipper, briquetting, ladder round pin.

Furthermore, the single-shaft linear module is arranged on the supporting platform and connected through a bolt, and the moving direction of the module is vertical to the axis of the encoder; the lower end of the clamping seat is arranged on the linear module sliding block, and the moving direction of the clamping seat is the same as that of the linear module; a V-shaped groove is formed in the lower portion of the clamping seat, the push rod is placed in the V-shaped groove, two stepped holes are formed in the upper end of the clamping seat, threads are formed in the upper ends of the stepped holes, and a through hole is formed in the lower end of the stepped hole; the upper end of the stepped pin is provided with an external thread, the lower end of the stepped pin is provided with a polished rod, and the outer side of the polished rod is provided with a compression spring; the ladder round pin passes through the screw thread and installs inside the shoulder hole, and during the polished rod passed the shoulder hole and inserted the round hole of briquetting upper portion processing, the briquetting lower part compressed tightly the push rod.

Furthermore, the encoder positioning platform is arranged above the square hole of the supporting platform.

Furthermore, the image extraction device comprises a three-axis linear module, a transfer block, a camera and a lens.

Furthermore, the X axis of the three-axis linear module is arranged on the supporting platform and connected through bolts; the switching block is connected with the Z axis of the three-axis linear module and the camera; the camera is connected with the lens through threads.

Furthermore, the clamping device comprises a gear, a rack, a V-shaped clamping plate, a clamping device and a stepping motor.

Further, the stepping motor is connected to the encoder positioning platform through a bolt; the gear is connected with a rotating shaft of the stepping motor through a key; rectangular guide rail grooves are processed on two sides of the rack; processing two parallel rectangular guide rails on the upper plane of the encoder positioning platform and the inner side of the rotating device; the rack is meshed with the gear and is arranged on the encoder positioning platform through a rectangular guide rail; the rotating device is connected with the encoder positioning platform through a bolt.

Furthermore, the rotating device comprises a conical shaft, a coupler, a rotating device and a servo motor.

Furthermore, a rectangular skylight is processed on the side surface of the rotating device, the upper part of the rotating device is connected with the encoder positioning platform through a bolt, and the lower part of the rotating device is connected with a servo motor through a bolt; the upper part of the coupler is connected with the conical shaft through a side screw in a screwing mode, and the lower part of the coupler is connected with the servo motor through a key.

The encoder positioning platform is provided with a round table, the round table is provided with a round hole, the diameter of the round hole is larger than the maximum diameter of the lower part of the encoder stepped shell, and the diameter of the round table is smaller than the diameter of the maximum position of the encoder shell. A rectangular guide rail is processed on the encoder positioning platform and matched with a rectangular guide rail groove on the rack.

The lower part of the clamping seat of the adjusting device is provided with a V-shaped groove, the upper part of the clamping seat is provided with a stepped hole, the upper part of the stepped hole is provided with a thread, the lower part of the stepped hole is a through hole, the upper part of the stepped pin is provided with an external thread, the lower part of the stepped pin is a cylinder, the diameter of the lower part of the stepped pin is smaller than that of the through hole, and the outer side of the cylinder is provided with a compression spring.

V-shaped clamping plates in the clamping device must be used in pairs, and the angles of the inclined planes of the V-shaped grooves are the same; rectangular guide rail grooves are formed in the two sides of the rack; the inner side of the clamping device shell is provided with a rectangular guide rail which is matched with a rectangular guide rail groove on the rack.

The coupling in the rotating device is composed of three parts, two ends of the coupling are composed of two convex claw half couplings, the convex claws are in a hollow fan shape, the convex claws on two sides are in clearance fit, the middle part of the coupling is provided with a compression spring, and the spring is in clearance fit with the inside of the coupling.

Drawings

FIG. 1 is a structural diagram of an eccentric correction platform of an encoder.

Fig. 2 is a block diagram of the adjusting device.

Fig. 3 is a structural diagram of the image extraction apparatus.

Fig. 4 is a block diagram of the clamp and a top view block diagram with the clamp housing removed.

Fig. 5 is a structural view of the rotating apparatus.

Fig. 6 is a structural view of the photoelectric angle encoder.

FIG. 7 is a side view and a cross-sectional view of a portion of a push rod clamp in the adjustment device.

Fig. 8 is a structural view of the coupling.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The following further describes specific structures and embodiments of the present invention with reference to the drawings.

The structural composition of the invention is shown in figure 1. The eccentric correction platform for the photoelectric angular encoder is composed of a supporting platform 2, an encoder positioning platform 5, an adjusting device 1, an image extraction device 3, a clamping device 4 and a rotating device 7. The adjusting device 1, the image extraction device 3 and the encoder positioning platform 5 are respectively fixed on the supporting platform 2. The clamping device 4 and the rotating device 7 are respectively fixed on the encoder positioning platform 5.

The encoder positioning platform 5 is used for adjusting the height of the encoder and ensuring that the front end of the push rod 15 only contacts with the code disc 63.

The adjusting device 1 comprises a single-shaft linear module 11, a push rod 15, a clamping seat 14, a pressing block 12 and a stepped pin 13 and is used for adjusting the eccentricity of an encoder code wheel 63 and a rotating shaft 61.

The image extraction device 3 comprises a three-axis linear module 31, a switching block 32, a camera 33 and a lens 34, and is used for extracting the position of an annular code channel 62 on an encoder code wheel 63.

The clamping device 4 comprises a gear 45, a rack 42, a V-shaped clamping plate 41, a clamping device 43 and a stepping motor 44, and is used for fixing the encoder shell 64.

The rotating device 7 comprises a conical shaft 71, a coupling 72, a rotating device 73 and a servo motor 74, and is used for axial positioning of the encoder and rotation of the encoder.

As shown in FIG. 5, the encoder comprises an annular code channel 62, a code wheel 63, an encoder shell 64 and a rotating shaft 61, wherein the annular code channel 62 is carved on the code wheel 63, the code wheel 63 is installed on the rotating shaft 61, and the rotating shaft 61 is connected with the encoder shell 64 through a bearing.

As shown in fig. 7, the push rod 15 is disposed in a V-shaped groove below the clamping seat 14, the press block 12 is pressed down by screwing the stepped pin 13, the press block 12 presses the upper end of the push rod 15, the push rod 15 is fixed by three line contacts, and the adjustable extension and the detachable push rod has the characteristics of adjustable extension and convenience in detachment.

As shown in fig. 8, one end of the coupling 72 is provided with a key groove, the other end of the coupling is connected by screwing a bolt, the two half-couplings 72 are in clearance fit with each other, the transmission angle precision can be ensured after the coupling is installed, and the compression spring provides outward pre-tightening force for the two half-couplings 72.

As shown in figure 1. The encoder is put into a round hole on an encoder positioning platform 5, a stepping motor 44 drives a gear 45 to rotate, the gear 45 is meshed with two racks 42, the two racks 42 do heterodromous linear motion to drive a V-shaped clamping plate 41 to move inwards to clamp the encoder, a three-axis linear module 31 drives a camera 33 and a lens 34 to move above a code disc 63, the eccentric distance and the angle of the encoder are calculated by extracting the position of an annular code channel 62, a servo motor 74 drives a coupler 72 and a conical shaft 71 to rotate, a compression spring in the coupler 72 is pressed down when the encoder is installed, the conical shaft 71 is jacked up by the coupler 72 and extends into an encoder rotating shaft 61, the encoder rotating shaft 61 rotates along with the servo motor 74, the maximum eccentric position of the code disc 63 and the moving direction of the single-axis linear module 11 are in the same direction through a rotation angle, the single-axis linear module 11 moves forwards to drive a push rod 15 to move in the same direction, and the front end of the push rod 15 touches the code disc 63, after the push code wheel 63 moves by the same eccentric distance, the single-axis linear module 11 is retracted.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.