Integrated optical assembly structure with isolator, and processing method therefor

Abstract

Disclosed are an integrated optical assembly structure with an isolator and a processing method therefor. The structure comprises a front metal cover, a ceramic sleeve, a pressing block, a ceramic plug core and an isolator chip, wherein the ceramic sleeve is disposed inside the front metal cover; one end of the ceramic plug core is disposed inside the ceramic sleeve and the other end thereof is fixed in the pressing block; the pressing block has a plug core positioning hole and a chip accommodating hole; the chip accommodating hole has at least two positioning corners; and the isolator chip having magnetism itself is installed in the chip accommodating hole and is positioned and fixed via the positioning corners.

What is claimed is: 
     
         1 . An integrated optical assembly structure with an isolator, comprising a front metal cover, a ceramic sleeve, a pressing block, a ceramic plug core and an isolator chip, the ceramic sleeve being disposed inside the front metal cover and fixed by the pressing block, one end of the ceramic plug core being disposed inside the ceramic sleeve, another end of the ceramic plug core being fixed in the pressing block, a plug core positioning hole being defined in one end of the pressing block, located adjacent to the front metal cover, for positioning the ceramic plug core, a chip accommodating hole being defined in another end of the pressing block, the plug core positioning hole communicating with the chip accommodating hole, the chip accommodating hole having at least two positioning corners, the isolator chip being composed of a polarizer, a magnetic Faraday rotator and an analyzer, the isolator chip being installed in the chip accommodating hole and positioned by the positioning corners. 
     
     
         2 . The integrated optical assembly structure as claimed in  claim 1 , wherein the pressing block includes a first pressing block and a second pressing block, an electrical clearance is defined between the first pressing block and the second pressing block, the first pressing block is fixedly connected to the front metal cover, the plug core positioning hole and the chip accommodating hole are defined in the second pressing block. 
     
     
         3 . The integrated optical assembly structure as claimed in  claim 1  or  2 , wherein the positioning corners are each at a right angle. 
     
     
         4 . The integrated optical assembly structure as claimed in  claim 1 , wherein at least two of the positioning corners are arranged diagonally. 
     
     
         5 . The integrated optical assembly structure as claimed in  claim 3 , wherein the number of the positioning corners of the chip accommodating hole is four, and the positioning corners are arranged at four corners of the chip accommodating hole. 
     
     
         6 . The integrated optical assembly structure as claimed in  claim 5 , wherein the chip accommodating hole has a square shape. 
     
     
         7 . The integrated optical assembly structure as claimed in  claim 5 , wherein the four positioning corners the chip accommodating hole are connected through a circular arc surface. 
     
     
         8 . A processing method for the integrated optical assembly structure as claimed in any one of  claims 1 - 6 , comprising the following steps of:
 step 1, material preparation: selecting and putting a Φ5.5 round bar material into a dual spindle CNC bar feeder, and cutting ends of the material;   step 2, drilling of first center hole: adjusting the rotation speed of a spindle of the dual spindle CNC bar feeder to 2500 r/min-3500 r/min, ensuring the concentricity of a drill head with the spindle, and positioning a center hole by the Z-axis movement of a 3.0 central drill towards the dual spindle CNC bar feeder, wherein the feed rate of the drill head is 0.02-0.03 mm/round;   step 3, drilling of round hole: switching to a Φ0.35 drill head, ensuring the concentricity of the drill head with the spindle, adjusting the rotation speed of the spindle to 4500 r/min-5500 r/min, performing a drilling operation by the Z-axis movement of the drill head towards the dual spindle CNC bar feeder, wherein the feed rate is 0.01-0.02 mm/round, and the drilling depth is 3.0 mm:   step 4, formation of chip accommodating hole: switching to a Φ0.35 broach, ensuring the concentricity of the broach with the spindle, adjusting the rotation speed of the spindle to 300-800 r/min, forming a square hole by the Z-axis movement of the broach towards the dual spindle CNC bar feeder, wherein the feed rate of the broach is 0.005-0.01 mm/round, and the processing depth is 1.5 mm;   step 5, rough turning: switching to a rough turning tool, adjusting the rotation speed of the spindle to 2000-2500 r/min, and performing a rough turning by the X-axis movement of the rough turning tool towards the dual spindle CNC bar feeder, wherein the feed rate is 0.02-0.03 mm/round, and the reserved space is 0.1-0.2 mm;   step 6, fine turning: switching to a fine turning tool, adjusting the rotation speed of the spindle to 3000-3500 r/min, performing a fine turning by the X-axis movement of the fine turning tool towards the dual spindle CNC bar feeder, wherein the feed rate is 0.01-0.02 mm/round;   step 7, cut-off switching to a cut-off knife, adjusting the rotation speed of the spindle to 2000-2500 r/min, performing a cut-off operation by the X-axis movement of the knife towards the dual spindle CNC bar feeder, wherein the feed rate is 0.01-0.02 mm/round, the reserved cut-off length is 0.1 mm, and it is necessary to clamp an outer periphery of a workpiece stage by a sub-spindle while cutting;   step 8, polishing of cut surface: adjusting the rotation speed of the sub-spindle to 2500-3000 r/min, wherein the feed rate of a cutter is 0.01-0.02 mm/round, and then polishing the cut surface;   step 9, drilling of second center hole: adjusting the rotation speed of the sub-spindle to approximately 2500 r/min-3500 r/min, ensuring the concentricity of the drill head with the sub-spindle of the dual spindle CNC bar feeder, and positioning a center hole by the Z-axis movement of the 3.0 central drill towards the dual spindle CNC bar feeder, wherein the feed rate of the drill head is 0.02-0.03 mm/round;   step 10, drilling of plug core positioning hole: switching to a Φ1.2 drill, ensuring the concentricity of the drill head with the sub-spindle, adjusting the rotation speed of the sub-spindle to 2500 r/min-3500 r/min, and performing a drilling operation by the Z-axis movement of the drill head towards the dual spindle CNC bar feeder, wherein the feed rate is 0.01-0.02 mm/round, and the drilling depth is 0.7 mm; and   step 11, boring: switching to a Φ1.24 boring tool, adjusting the rotation speed of the sub-spindle to 2500 r/min-3500 r/min, and performing a boring operation by the Z-axis movement of the drill head towards the dual spindle CNC bar feeder, wherein the feed rate is 0.01-0.02 mm/round, and the boring depth is 0.7 mm.