A detection device and a grinding method for double-apc adapter ferrule grinding

Abstract

The application belongs to the technical field of adapter production equipment, and in particular relates to a detection device and a grinding method for double-APC adapter ferrule grinding, which comprises a visual feature detector, the visual feature detector comprises a base, a stand and a camera, the stand is vertically fixed on the base, and the camera is arranged on the stand, a clamping assembly matched with the camera is arranged on the base, the clamping assembly comprises a mounting seat, a positioning disc, an equal-height device and a limiting tool matched with each other, the ceramic ferrule can be clamped in batches, the grinding is facilitated, the grinding result of the ceramic ferrule can be detected, the clamping angle of the ceramic ferrule on the limiting tool can be detected and adjusted, the detection and adjustment efficiency is improved, the overall positioning precision is high, the grinding processing difficulty is reduced, the efficiency is high, and the batch production is facilitated.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of adapter production equipment, in particular to a detection device and a grinding method for double-APC adapter ferrule grinding. BACKGROUND

[0002] In optical communication device products, part of the light emitted by the laser will be reflected on different interfaces. This reflected light usually affects the normal operation of the device and reduces product performance. In existing optical interface adapters, when the laser-emitted light is transmitted through the end face of the ceramic ferrule connection, there is a continuous Fresnel reflection phenomenon, resulting in about 0.3 dB of additional connection loss. This strong Fresnel reflected light will directly return along the original light path to affect the performance of the laser, which can easily cause linear, eye diagram and other malfunctions. In order to reduce this Fresnel reflection phenomenon, APC end faces are used on both the coupling end and the butt end of the ceramic ferrule. The APC end face is an end face with an angle. When the coupling surface of the joint is perpendicular, the reflected light returns along the original path. However, the double-APC structure of the adapter has many components and requires high precision of the bevel angle. In the production and processing of the APC end face, such as grinding, there are problems of poor positioning accuracy, complicated processing, low efficiency, and difficulty in batch production. SUMMARY

[0003] In order to solve the above technical problems, the application provides a detection device for double-APC adapter ferrule grinding, which comprises a visual feature detector, the visual feature detector comprises a base, a stand and a camera; the stand is vertically fixed on the base, and the camera is arranged on the stand; the base is provided with a clamping assembly matched with the camera; the clamping assembly comprises a mounting seat, a positioning disc, an equalizer and a limiting tool;

[0004] The positioning disc is fixed on the base through the mounting seat, and the upper surface of the positioning disc is provided with a glass bead screw; the center of the equalizer is rotationally connected with the center of the positioning disc through a bearing, the upper surface of the equalizer is uniformly distributed with a plurality of object placing grooves for placing ceramic ferrules in the circumferential direction, and the lower surface of the equalizer is uniformly distributed with a plurality of limiting grooves in the circumferential direction; the number of limiting grooves is the same as that of object placing grooves; the limiting grooves and the glass bead screw are matched with each other; the limiting tool and the equalizer are matched with each other; and the limiting tool and the equalizer are detachably connected.

[0005] Preferably, the limiting tool is a quick mounting disc, and the clamping grooves on the quick mounting disc correspond to the object placing grooves.

[0006] Preferably, the leveler is provided with an angle adjusting mechanism, which comprises a plurality of angle adjusting assemblies arranged at corresponding storage grooves respectively, each of the angle adjusting assemblies comprises a mounting pipe and an adjusting gear, the mounting pipe is matched with the ceramic ferrule, the lower end of the mounting pipe is rotatably arranged in the storage groove through a bearing, the bottom of the mounting pipe out of the storage groove is fixed with a gear rack, the gear rack is engaged with the adjusting gear, the center of the adjusting gear is fixedly connected with a rotating shaft, and the rotating shaft is rotatably connected with the leveler through a bearing; the mounting pipe is provided with a locking bolt, and the limiting tool is a half-lockable quick mounting disc.

[0007] Preferably, the rotating shaft is connected with a motor, the motor is detachably fixed on the leveler, and the motor is connected with the control system of the visual feature detector.

[0008] Preferably, the center of the lower surface of the leveler is fixedly connected with a rotating shaft, the rotating shaft is rotatably connected with the center of the positioning disc through a bearing, the lower end of the rotating shaft is connected with a stepping motor after penetrating through the positioning disc, the stepping motor is fixed in a mounting seat, and the stepping motor is connected with the control system of the visual feature detector.

[0009] As another aspect of the present application, the present application also provides a grinding method using the detection device for double APC adapter ferrule grinding, which comprises the following steps:

[0010] (1) installing each ceramic ferrule on the leveler so that the heights of the ceramic ferrules out of the leveler are the same, and then clamping and fixing the ceramic ferrules out of the leveler by using the limiting tool;

[0011] (2) installing and fixing the limiting tool clamping and fixing the ceramic ferrules on the grinding machine, and grinding one side end surface of each ceramic ferrule by using the grinding machine;

[0012] (3) taking the ceramic ferrules with one side end surface ground and the limiting tool from the grinding machine, and placing them on the leveler again, at this time, the end surface of the ceramic ferrule not ground is matched with the storage groove of the leveler, the end surface of the ceramic ferrule ground faces upward, rotating the leveler so that the end surfaces of the ceramic ferrules ground one by one correspond to the camera upward and downward, detecting whether the end surfaces of the ceramic ferrules ground are qualified and whether the positions of the ceramic ferrules are correct by using the visual feature detector, ensuring that the angles of the two end surfaces are matched when grinding the other end surface of each ceramic ferrule, and when the position of a certain ceramic ferrule is unqualified, the position of the ceramic ferrule can be made qualified by rotating the ceramic ferrule according to the prompt of the visual feature detector.

[0013] (4), through the detection and adjustment of step (3) to make each ceramic ferrule in the qualified state, then the limiting tool for clamping and fixing the ceramic ferrule is taken off from the contour device of the detection device for grinding the ferrule of the double APC adapter, and is installed on the grinding machine again to grind the end surface of the ceramic ferrule which is not ground.

[0014] The present application also includes other components or steps which can make the detection device and the grinding method for grinding the ferrule of the double APC adapter normal, such as the control components of the visual feature detector, the control components of the motor, the control components of the stepping motor, the grinding machine and the like are all conventional technical means in the field, in addition, the devices, components or steps not defined in the present application all adopt the conventional technical means in the field, such as the visual feature detector, the camera, the glass bead screw, the quick mounting disc, the contour device and the like are all commonly used equipment in the field.

[0015] The visual detector is used to replace the human eye to do some judgment and measurement work. Through the visual detector, the target photographed by the camera is converted into image information, and then is transmitted to a special image processing system. According to the information such as the distribution of pixels, brightness and color, the image processing system converts the image information into digital signals, and then performs various operations on the signals to extract the characteristics of the target and outputs the corresponding results. Then, according to the results, corresponding adjustments are made. The above is the prior art and will not be described in detail.

[0016] In the present application, the plurality of ceramic ferrules can be quickly and efficiently installed on the limiting tool through the contour device, and the heights of the ceramic ferrules on the limiting tool are consistent, which is convenient for the grinding machine to grind the end surfaces of the ceramic ferrules on the limiting tool synchronously. Then, the ceramic ferrules with one side end surface ground are installed on the contour device of the detection device through the limiting tool, the end surfaces of the ceramic ferrules ground are corresponded with the camera one by one through rotating the contour device, and whether the end surfaces of the ceramic ferrules ground are qualified and whether the positions of the ceramic ferrules installed are correct are detected through the visual feature detector. When the position of a ceramic ferrule is unqualified, the position of the ceramic ferrule can be made qualified according to the prompt of the visual feature detector, so that when the other end surface of the ceramic ferrule is ground, the angles of the two end surfaces are matched. In the above rotating process, when a ceramic ferrule is corresponded with the camera, the contour device is limited through the cooperation of the glass bead screw and the limiting groove, so as to ensure the stability of the limiting tool and improve the detection accuracy. The present application changes the previous rough estimation of the angle through the human eye, and then the ceramic ferrule is manually rotated, so that the angle error is large and the defective rate of the insertion is high. The high-magnification visual feature detector is used to replace the human eye to do some judgment and measurement work, and the angle can be output on the display screen of the visual feature detector. The ceramic ferrule is rotated according to the result, so that the angle error can be controlled within the qualified range, and the yield can reach 100%.

[0017] The application has the advantages that the structure is reasonable, the ceramic ferrule can be clamped in batches, the grinding is facilitated, the grinding result of the ceramic ferrule can be detected, the clamping angle of the ceramic ferrule on the limiting tooling can be detected and adjusted, the detection and adjustment efficiency is improved, the overall positioning precision is high, the grinding processing difficulty is reduced, the efficiency is high, and the batch production is facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0018] The application will be further described below in combination with the drawings and examples.

[0019] Figure 1 is a structural schematic view of a detection device for double-APC adapter ferrule grinding according to the application;

[0020] Figure 2 is a sectional view of the clamping assembly in Example 1;

[0021] Figure 3 is a bottom view of the height equalizer; Figure 2

[0022] is a top view of the height equalizer; Figure 4 Figure 2

[0023] Figure 5 is a sectional view of the clamping assembly in Example 2;

[0024] Figure 6 is a partial enlarged view of Figure 5

[0025] Figure 7 is a structural schematic view of the height equalizer and the limiting tooling; Figure 5

[0026] is a structural schematic view of the double-APC adapter ceramic ferrule in the application Figure 8

[0027] is a left view of Figure 9 Figure 8

[0028] In the figure: 1, base; 2, mounting seat; 3, positioning disc; 4, height equalizer; 5, limiting tooling; 6, camera; 7, glass bead screw; 8, ceramic ferrule; 9, limiting groove; 10, stand column; 11, storage groove; 12, rack; 13, locking bolt; 14, adjusting gear; 15, rotating shaft; 16, grinding surface; 17, motor; 18, mounting pipe.DETAILED DESCRIPTION

[0029] ​​​​​The present invention will now be clearly described with reference to the accompanying drawings and specific embodiments. This description is merely illustrative and is not intended to limit the scope of the invention. Any modifications, equivalent substitutions, or improvements made by those skilled in the art based on the embodiments of the present invention without inventive effort to obtain all other embodiments should be included within the scope of protection of the present invention.

[0030] Example 1

[0031] like Figures 1-4 As shown, this invention provides a detection device for grinding the ferrule of a dual APC adapter, including a visual feature detector, which is a MindVision MV-GED130C-T-CL; the visual feature detector includes a base 1, a column 10, and a camera 6; the column 10 is vertically fixed on the base 1, and the camera 6 is fixed on the column 10; the base 1 is provided with a clamping assembly that cooperates with the camera 6; the clamping assembly includes a mounting base 2, a positioning plate 3, a height equalizer 4, and a limiting fixture 5;

[0032] The positioning disk 3 is fixed to the base 1 by bolts and mounting base 2. The upper surface of the positioning disk 3 is provided with glass ball screws 7. The center of the leveling device 4 is rotatably connected to the center of the positioning disk 3 through a bearing. The upper surface of the leveling device 4 has 24 placement slots 11 for placing ceramic inserts 8 evenly distributed circumferentially. The lower surface of the leveling device 4 has 24 limiting slots 9 evenly distributed circumferentially. The number of limiting slots 9 is the same as the number of placement slots 11. The limiting slots 9 cooperate with the glass ball screws 7. The limiting fixture 5 cooperates with the leveling device 4. The limiting fixture 5 is detachably connected to the leveling device 4.

[0033] The limiting fixture 5 is a quick-release tray, and the slots on the quick-release tray correspond to the storage slots 11. The quick-release tray is a Funite KPC model. The quick-release trays are either LC1.25APC8-24 or SC2.5APC8-24. The above quick-release trays are existing technologies, and their structure and principle will not be described in detail here.

[0034] Example 2

[0035] like Figure 1 and Figures 5-9As shown, the application also provides a detection device for double-APC adapter ferrule grinding, which comprises a visual feature detector, and the visual feature detector adopts MV-GED130C-T-CL of MindVision; the visual feature detector comprises a base 1, a column 10 and a camera 6; the column 10 is vertically fixed on the base 1, and the camera 6 is fixed on the column 10; the base 1 is provided with a clamping assembly matched with the camera 6; the clamping assembly comprises a mounting seat 2, a positioning disc 3, an equalizer 4 and a limiting tool 5;

[0036] The positioning disc 3 is fixed on the base 1 through bolts and the mounting seat 2, and the upper surface of the positioning disc 3 is provided with a glass bead screw 7; the center of the equalizer 4 is rotationally connected with the center of the positioning disc 3 through a bearing, the upper surface of the equalizer 4 is uniformly distributed with 24 placement grooves 11 for placing ceramic ferrules 8 in the circumferential direction, and the lower surface of the equalizer 4 is uniformly distributed with 24 limiting grooves 9 in the circumferential direction; the number of the limiting grooves 9 is the same as that of the placement grooves 11; the limiting grooves 9 are matched with the glass bead screw 7; the limiting tool 5 is matched with the equalizer 4, and the limiting tool 5 is detachably connected with the equalizer 4.

[0037] The limiting tool 5 is a semi-lockable quick mounting disc, the clamping grooves on the quick mounting disc correspond to the placement grooves 11, and the model of the quick mounting disc adopts a quick mounting disc of Funite KPC or a quick mounting disc of LC1.25APC8 degrees-24 or SC2.5APC8 degrees-24; the above quick mounting disc is a prior art, and its structure and principle will not be described here.

[0038] The equalizer 4 is provided with an angle adjusting mechanism, the angle adjusting mechanism comprises 24 angle adjusting assemblies, the angle adjusting assemblies are respectively arranged at the corresponding placement grooves 11, and the angle adjusting assembly comprises a mounting pipe 18 and an adjusting gear 14; the mounting pipe 18 is matched with the ceramic ferrule 8, the lower end of the mounting pipe 18 is rotationally arranged in the placement groove 11 through a bearing, the bottom of the mounting pipe 18 out of the placement groove 11 is fixed with a ring of rack 12, the rack 12 is engaged with the adjusting gear 14, the center of the adjusting gear 14 is fixedly connected with a rotating shaft 15, and the rotating shaft 15 is rotationally connected with the equalizer 4 through a bearing; the mounting pipe 18 is provided with a locking bolt 13; the ceramic ferrule 8 is mounted in the mounting pipe 18 and fastened in the mounting pipe 18 through the locking bolt 13; by rotating the adjusting gear 14, the mounting pipe 18 and the ceramic ferrule 8 can be rotated in the placement groove 11; since the quick mounting disc can be semi-locked, the so-called semi-locked state is that each ceramic ferrule 8 can be rotated after being clamped in the clamping groove of the quick mounting disc and will not fall off from the clamping groove; therefore, after each ceramic ferrule 8 is mounted on the quick mounting disc, the angle adjusting assembly can be used to adjust the angle of the ceramic ferrule 8 on the quick mounting disc in cooperation with the equalizer 4.

[0039] The rotating shaft 15 is connected with a motor 17, the motor 17 is detachably fixed on the leveler 4, and the motor 17 is connected with the control system of the visual feature detector. The automatic control of the adjusting gear can be realized, when the corresponding ceramic ferrule of the camera needs to be rotated by a certain angle, the corresponding motor is controlled by the control system to drive the rotating shaft to rotate, so that the ceramic ferrule is driven to rotate by the mounting pipe, manual fluctuation of the adjusting gear is avoided, and a large error is avoided. The control of the control system is prior art, and details are not repeated here.

[0040] The center of the lower surface of the leveler 4 is fixedly connected with a rotating shaft, the rotating shaft is rotatably connected with the center of the positioning disc 3 through a bearing, the lower end of the rotating shaft penetrates the positioning disc and is connected with a stepping motor, the stepping motor is fixed in the mounting seat 2, and the stepping motor is connected with the control system of the visual feature detector. The automatic rotation of the leveler and the limiting tool can be realized, when one of the ceramic ferrules is detected by the camera, the control system controls the leveler to rotate by a certain angle, so that the adjacent other ceramic ferrule is located directly below the camera for detection. The operation of manually rotating the leveler is avoided, and the detection efficiency is improved.

[0041] Embodiment 3

[0042] The application also provides a grinding method using the detection device for double APC adapter ferrule grinding, comprising the following steps:

[0043] (1), each ceramic ferrule 8 is installed on the leveler 4, so that each ceramic ferrule 8 protrudes from the leveler 4 by the same height, and then the limiting tool 5 is used to clamp and fix each ceramic ferrule 8 protruding from the leveler;

[0044] (2), the limiting tool 5 clamping and fixing the ceramic ferrule 8 is installed and fixed on the grinding machine, and the grinding machine grinds one side end face of each ceramic ferrule 8; the ground grinding surface 16 forms an angle of about 8° with the original end face;

[0045] (3), the ceramic ferrule 8 with one side end face ground and the limiting tool 5 are taken off from the grinding machine and placed on the leveler 4 again, at this time, the ungrounded end face of the ceramic ferrule 8 corresponds to the placement groove 11 of the leveler 4, the ground end face of the ceramic ferrule 8 faces upwards, the leveler 4 is rotated, the ground end face of each ceramic ferrule 8 corresponds to the camera 6 upwards and downwards, the visual feature detector is used to detect whether the ground grinding surface of each ceramic ferrule 8 is qualified and whether the position of the ceramic ferrule 8 is correct, so as to ensure that the angles of the two end faces are matched when the other end face of each ceramic ferrule 8 is ground, and when the installation position of a certain ceramic ferrule 8 is unqualified, the ceramic ferrule 8 can be rotated according to the prompt of the visual feature detector to make the position qualified;

[0046] (4) After the detection and adjustment of step (3), each ceramic ferrule 8 is in a qualified state, then the limiting fixture 5 clamping and fixing the ceramic ferrule 8 is taken off from the contour gauge 4 of the detection device for double APC adapter ferrule grinding, and is installed on the grinding machine again to grind the unground end face of the ceramic ferrule.

[0047] Embodiments of the application have been described above, with the understanding that these descriptions are exemplary only, and are not intended to be exhaustive or to limit the scope of the embodiments disclosed. Many modifications and variations are possible in light of the above teachings without departing from the scope and spirit of the described embodiments.

Claims

1. A detection device for double APC adapter ferrule polishing, comprising a visual feature detector, the visual feature detector comprising a base, a column and a camera; the column is vertically fixed on the base, and the camera is arranged on the column; characterized in that: The base is provided with a clamping assembly matched with the camera; the clamping assembly comprises a mounting seat, a positioning disc, an equalizer and a limiting tool; The positioning disc is fixed on the base through the mounting seat, and the upper surface of the positioning disc is provided with a glass bead screw; the center of the equalizer is rotationally connected with the center of the positioning disc through a bearing, the upper surface of the equalizer is uniformly distributed with a plurality of object placing grooves for placing ceramic ferrules in the circumferential direction, and the lower surface of the equalizer is uniformly distributed with a plurality of limiting grooves in the circumferential direction; the number of the limiting grooves is the same as that of the object placing grooves; the limiting grooves are matched with the glass bead screws; the limiting tool is matched with the equalizer; and the limiting tool and the equalizer are detachably connected; The limiting tool is a quick mounting disc, and the clamping grooves on the quick mounting disc correspond to the object placing grooves; The equalizer is provided with an angle adjusting mechanism, the angle adjusting mechanism comprises a plurality of angle adjusting assemblies, the angle adjusting assemblies are respectively arranged at the corresponding object placing grooves, the angle adjusting assembly comprises a mounting pipe and an adjusting gear, the mounting pipe is matched with the ceramic ferrule, the lower end of the mounting pipe is rotationally arranged in the object placing groove through a bearing, the bottom of the mounting pipe out of the object placing groove is fixed with a gear rack, the gear rack is meshed with the adjusting gear, the center of the adjusting gear is fixedly connected with a rotating shaft, and the rotating shaft is rotationally connected with the equalizer through a bearing; the mounting pipe is provided with a locking bolt; and the limiting tool is a semi-lockable quick mounting disc.

2. The detection device for double APC adapter ferrule polishing according to claim 1, characterized in that: The rotating shaft is connected with a motor, and the motor is detachably fixed on the equalizer.

3. A detection device for double APC adapter ferrule polishing according to claim 1, characterized in that: The center of the lower surface of the equalizer is fixedly connected with a rotating shaft, the rotating shaft is rotationally connected with the center of the positioning disc through a bearing, and the lower end of the rotating shaft is connected with a stepping motor after penetrating through the positioning disc.

4. A polishing method using the detection device for polishing a ferrule for a dual-APC adapter according to any one of claims 1 to 3, characterized in that: The method comprises the following steps: (1) installing each ceramic ferrule on the equalizer so that the heights of the ceramic ferrules out of the equalizer are the same, and then clamping and fixing the ceramic ferrules out of the equalizer by using the limiting tool; (2) installing and fixing the limiting tool clamping and fixing the ceramic ferrules on a grinding machine, and grinding one side end surface of each ceramic ferrule by using the grinding machine; (3) taking the ceramic ferrules with the clamping and fixed limiting tool from the grinding machine, placing the ceramic ferrules on the equalizer again, matching the end surface of the ceramic ferrule not to be ground with the object placing groove of the equalizer, turning the equalizer so that the end surface of each ceramic ferrule to be ground is matched with the camera, and detecting whether the end surface of each ceramic ferrule to be ground is qualified and whether the position of the ceramic ferrule is correct by using a visual feature detector, so as to ensure that the two end surfaces are matched in angle when the other end surface of each ceramic ferrule is ground, and turning the ceramic ferrule to make the position of the ceramic ferrule qualified according to the prompt of the visual feature detector when the position of the ceramic ferrule is not qualified; (4) placing the ceramic ferrules in the qualified state through the detection and adjustment of step (3), taking the limiting tool clamping and fixing the ceramic ferrules from the equalizer of the detection device for grinding the ferrules of the double APC adapter, and then installing the limiting tool on the grinding machine to grind the other end surface of the ceramic ferrule.

Images