CN112828602B - Clamp and method for high-precision machining of output end of image intensifier tube - Google Patents
Clamp and method for high-precision machining of output end of image intensifier tube Download PDFInfo
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- CN112828602B CN112828602B CN202110046769.7A CN202110046769A CN112828602B CN 112828602 B CN112828602 B CN 112828602B CN 202110046769 A CN202110046769 A CN 202110046769A CN 112828602 B CN112828602 B CN 112828602B
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- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
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Abstract
The invention discloses a clamp, a cutter and a processing method for high-precision processing of an output end of an image intensifier tube, wherein the clamp comprises a supporting seat, an elastic pressing ring and a pressing nut; the image enhancement tube is arranged on the supporting seat and is fastened on the processing table top of the engraving and milling machine through screws. The tool comprises a rounding tool for outer circle grinding and a chamfering tool for chamfering. The method of the invention comprises the following steps: 1) fastening an image enhancement tube on a processing table surface of a finishing carving machine, 2) respectively installing a rounding cutter and a chamfering cutter in a tool magazine of the finishing carving machine, and numbering the two cutters and measuring the cutter length; 3) measuring the coordinates of the output surface of the image enhancement tube at each station as processing coordinates, and judging that the image enhancement tube can be processed if the offset of the coordinates does not exceed a preset value; taking out the rounding cutter for cylindrical grinding; taking out the chamfering tool for chamfering; and measuring the machining size after machining and calculating the wear compensation of the cutter. The invention has the characteristics of high precision and efficiency, good coaxiality and the like.
Description
Technical Field
The invention relates to the field of high-precision, digital and automatic processing of complex parts of a low-light-level image intensifier, in particular to a clamp, a cutter and a processing method for high-precision processing of an output end of an image intensifier tube, and particularly relates to a tool and a method for realizing high-precision processing of the output end of the image intensifier tube by designing the clamp, the cutter and the processing method based on precision numerical control processing equipment.
Background
The low-light level image intensifier tube (hereinafter referred to as image intensifier tube) is a core component for manufacturing the low-light level image intensifier. In the manufacture of image intensifier tubes, the optical components at the output end need to be machined to a specific shape and size according to the design requirements of each model, wherein the most common is to machine a smaller cylinder and chamfer the edge of the cylinder.
The traditional processing method is that an edge grinding machine is utilized to tightly push the input end and the output end of an image enhancement tube and enable the image enhancement tube to rotate along the axial direction, and the diameter of a cylinder at the output end is ground to be small through a rotating grinding wheel; and then, processing the chamfer by a loose grain abrasive method by manual operation. The method for processing the output end of the image enhancement tube has the disadvantages of poor coaxiality, inaccurate size control, difficult operation and low efficiency.
The use of the engraving and milling machine can improve the processing precision and the processing efficiency. However, the traditional engraving and milling machine is difficult to adapt to the high-precision processing requirement. For example, a specific structure of the image intensifier tube is shown in fig. 8, which is complex, and clamping is difficult when an output end is processed by using a cnc engraving and milling machine; the cutter used for processing needs to be designed according to the processing requirement; in addition, the machining method needs to be developed and a special machining program needs to be designed when the engraving machine is used for machining.
Disclosure of Invention
Aiming at the problems of poor coaxiality, inaccurate size control, difficult operation and low efficiency in the traditional method for processing the output end of the image intensifier tube, the invention provides a stable image intensifier tube clamp and a stable cutter and a high-precision and automatic processing method by relying on a precise engraving CNC engraving machine (hereinafter referred to as a precise engraving machine).
The technical scheme adopted by the invention is as follows:
a kind of clamp like the high-precision processing of the output end of the enhancement tube, this clamp includes supporting seat, elastic clamping ring and gland nut; the supporting seat is fastened on the processing table surface of the engraving and milling machine through screws; the supporting seat is composed of a base and a cushion block positioned on the base in a tight fit mode, and the plane at the top of the cushion block is used for supporting the plane of an input window of the image enhancement tube; the pressing nut is connected with the supporting seat through threads, the pressing nut can extrude the elastic pressing ring through screwing the threads, and the image intensifier tube is simultaneously pressed inwards and downwards through the elastic pressing ring, so that the input surface of the image intensifier tube is tightly attached to the cushion block of the supporting seat; the elastic pressing ring is formed by sawing an elastic annular ring into a gap, and the minimum inner diameter position of the elastic pressing ring is of an annular inward protruding structure.
Furthermore, the inner hole of the compression nut is also provided with a countersunk chamfer, one side of the outer diameter of the elastic pressing ring is provided with a chamfer, and the chamfer is matched with the countersunk chamfer at the inner hole of the compression nut.
A rounding tool for high-precision processing of an output end of an image intensifier tube is used for matching with a clamp to carry out excircle rounding processing during high-precision processing of the output end of a low-light-level image intensifier tube, a base body of the rounding tool is made of steel, diamond grinding materials with the thickness of 0.05-0.3 mm are plated on the base body by an electroplating method and serve as cutting edges, and the mesh number of the diamond grinding materials is 200-800 #; the diameter of the blade part is 6 mm-30 mm, and the bottom of the cutter is provided with a 0.05 mm-2 mm deep cross groove to increase the cutting force of the bottom.
A chamfer cutter for high-precision processing of an output end of an image intensifier tube is used for being matched with a clamp to carry out chamfer processing on the output end of a low-light-level image intensifier tube during high-precision processing, a substrate of the chamfer cutter is made of steel, diamond grinding materials with the thickness of 0.1-0.3 mm are plated on the substrate by an electroplating method to serve as cutting edges, and the mesh number of the diamond grinding materials is 700-1200 #; the cutting edge is in a circular truncated cone shape, the diameter of the bottom surface of the circular truncated cone is 5-20 mm, the included angle between the generatrix of the circular truncated cone and the axis is a chamfer angle required to be processed like the output surface of the reinforcing tube, and the included angle ranges from 0 degree to 90 degrees.
A high-precision processing method for the output end of an image intensifier tube comprises the following steps:
s1, forming a supporting seat by the cushion block and the base in a tight fit mode, and fastening the supporting seat on a processing table top of the engraving and milling machine through a nut; the input surface of the image intensifier tube faces downwards and is placed on the supporting seat in a manner of clinging to the cushion block; breaking the elastic pressing ring along two sides of the gap to increase the inner diameter of the elastic pressing ring, enabling the chamfer angle at the outer diameter to be upward, and sleeving the annular bulge at the position with the minimum inner diameter of the elastic pressing ring in the groove of the isolation ring of the image enhancement pipe; sleeving a compression nut on a supporting seat and screwing; repeating the operation to complete the clamping of the image enhancement tubes at all stations;
s2, respectively installing the rounding cutter and the chamfering cutter in a tool magazine of the engraving and milling machine, and numbering the two cutters and measuring the cutter length;
s3, making the engraving and milling machine perform the following high-precision machining operations:
s3.1, automatically taking out a measuring head of the on-machine measuring system by the main shaft, respectively measuring output surface coordinates (X, Y, Z) of the image enhancement tubes of all stations as processing coordinates, and judging that the image enhancement tubes can be processed if the offset of the coordinates does not exceed a preset value;
s3.2, automatically taking out the rounding cutter from the main shaft, and sequentially carrying out outer circle grinding processing on the image enhancement tube which can be processed;
s3.3, the main shaft automatically takes out the chamfering tool, and chamfering processing is sequentially carried out on the image enhancement tube which can be processed;
s3.4, the image enhancement tube which is not judged to be machinable is automatically skipped without machining;
and S3.5, automatically measuring the machining size and calculating the wear compensation of the cutter after machining is finished.
Compared with the prior art, the invention has the beneficial effects that:
1) the coaxiality of the output end of the image intensifier tube before and after processing is improved: the range is reduced to be within 20 percent of the prior art;
2) the consistency of the processing size is improved: the size distribution range is reduced to be within 27% of the prior art;
3) the processing efficiency is improved: the processing time is shortened to be within 43 percent of the prior art.
Drawings
FIG. 1 is a schematic diagram of a fixture, a tool and a processing method for high precision processing of an output end of an image intensifier tube according to the present invention.
FIG. 2 is a schematic view of the high-precision rounding tool for the output end of the image intensifier tube according to the present invention (wherein the top view is a top view, and the bottom view is a front view).
FIG. 3 is a schematic structural view of a chamfering tool for high precision machining of an output end of an image intensifier tube according to the present invention (wherein the upper drawing is a top view and the lower drawing is a front view).
FIG. 4 is a schematic structural view of a jig for high precision machining of an output end of an image intensifier tube according to the present invention.
FIG. 5 is a schematic view of a supporting seat structure of the jig for high precision processing of the output end of the image intensifier tube according to the present invention.
FIG. 6 is a schematic view of an elastic pressing ring structure of the clamp for high precision processing of the output end of the image intensifier tube.
FIG. 7 is a schematic view of a pressing nut of the jig for high precision machining of the output end of the image intensifier tube according to the present invention.
Fig. 8 is a schematic view of an image intensifier tube.
In the drawings, the names or schematic contents of the components represented by the respective reference numerals are as follows:
1-a cutter; 2-clamping; 3-an image intensifier tube; 4-rounding the cutter; 5-chamfering the cutter; 6-elastic pressing ring; 7-a compression nut; 8-a support seat; 9-cushion block; 10-a base; 11-an output terminal; 12-a spacer ring; 13-a cartridge part assembly; 14-a flange plate; 15-input terminal.
Detailed Description
The invention provides a clamp for high-precision processing of an output end of a low-light-level image intensifier tube, which comprises a supporting seat 8, an elastic pressing ring 6 and a pressing nut 7, and is shown in figures 4-7. The supporting seat 8 is fastened on the processing table of the engraving and milling machine through screws; the supporting seat 8 is composed of a base 10 and a cushion block 9 in a tight fit mode, and the plane at the top of the cushion block 9 is used for supporting the plane of an input window of the image intensifier tube 3. The compression nut 7 is connected with the supporting seat 8 through a screw, a countersunk chamfer is arranged at an inner hole of the compression nut 7, and the compression nut 7 can be tightly attached to the supporting seat 8 through screwing of the screw. The elastic pressing ring 6 is characterized in that the elastic annular ring is sawn to form a gap, the minimum inner diameter part of the elastic annular ring is of an annular inward convex structure, and one side of the outer diameter of the elastic annular ring is provided with a chamfer which is matched with a countersunk chamfer at the inner hole of the compression nut 7.
The rounding tool 4 for high-precision processing of the output end of the low-light-level image intensifier tube is used for grinding an external circle, and is shown in figure 2. The substrate is made of steel, diamond grinding materials with the thickness of 0.05-0.3 mm are plated on the substrate by an electroplating method to serve as a cutting edge, and the mesh number of the diamond grinding materials is 200-800 #; the diameter of the blade part is 6 mm-30 mm, and the bottom of the cutter is provided with a 0.05 mm-2 mm deep cross groove to ensure the cutting force of the bottom.
The chamfering tool 5 for high-precision processing of the output end of the low-light-level image intensifier tube is used for chamfering, and is shown in figure 3. The substrate is made of steel, diamond abrasive with the thickness of 0.1-0.3 mm is plated on the substrate by an electroplating method to serve as a cutting edge, and the mesh number of the diamond abrasive is 700-1200 #; the cutting edge is in a circular truncated cone shape, the diameter of the bottom surface of the circular truncated cone is 5-20 mm, the included angle between the generatrix of the circular truncated cone and the axis is a chamfer angle required to be processed like the output surface of the reinforcing tube, and the included angle ranges from 0 degree to 90 degrees.
The invention provides a processing method for high-precision processing of an output end of an image intensifier tube, which is an automatic processing program developed in a control system of an engraving and milling machine, and the development mode is as follows: computer modeling, processing scheme design, processing parameter setting, processing path generation and processing file output are carried out on the processing of the output end of the image intensifier tube by means of CAD/CAM software JDSoft SurfMill, an output processing file (NC format) is imported into an engraving and milling machine control system, multi-station automation and intelligent auxiliary function development are carried out, and a tsk file is formed, and is an automatic processing program executable in the engraving and milling machine control system.
The processing method, namely a processing program, can realize the automatic measurement of the center coordinates (X, Y, Z) of the output surfaces of all the stations of the image intensifier tube, the automatic calculation of the coordinate offset, the automatic judgment of whether the image intensifier tube can be processed or not, the automatic calling of the rounding cutter 4 for the outer circle grinding processing of the processable image intensifier tube, the automatic calling of the chamfering cutter 5 for the chamfering processing of the processable image intensifier tube and the calculation of the cutter abrasion compensation value according to the processing result.
The automatic measurement of the circle center coordinates (X, Y, Z) of the output surfaces of the image enhancement tubes of all the stations is realized by the following method: drawing a circle slightly smaller than the edge of the output surface of the image enhancement tube by using CAD/CAM software JDSoft SurfMill, setting measuring points at or near four quadrant points of the circle by using a curve measuring function, wherein the measuring points are downward in the measuring direction, the average value of height coordinates measured by the four points is used as a circle center coordinate Z of the output surface of the image enhancement tube, the maximum value of height differences of the four points is used for judging a parallel difference, and the image enhancement tube is judged to be 'unmachined' if the height differences exceed a preset value; and drawing a circle with the same size as the edge of the output surface of the image enhancement tube by using CAD/CAM software JDSoft SurfMill, setting measuring points at trisection points of the circle by using a curve measuring function, wherein the measuring direction is inward, the processing depth is greater than the radius of a spherical measuring head, and the circle center coordinates measured by the three points are used as the circle center coordinates (X, Y) of the output surface of the image enhancement tube.
The automatic calculation of the coordinate offset is realized by the following method: normally clamping the image enhancement tubes of all stations, and measuring circle center coordinates (X0, Y0) of each image enhancement tube by using a program 'circle center' of an engraving and milling machine; then starting a measuring head detection signal lamp, controlling the measuring head by using a hand wheel, measuring a height coordinate Z0 of the output surface of the image enhancement tube according to the change of the signal lamp, and measuring (X0, Y0 and Z0) of all stations by using the method as a preset processing coordinate of the image enhancement tube of the type; and during subsequent processing, taking the preset coordinates as processing coordinates, respectively operating the circle center coordinate programs for automatically measuring the output surfaces of the image enhancement tubes of all the stations for each station to obtain actual circle center coordinates (X, Y and Z), and calculating coordinate offsets to obtain (X-X0, Y-Y0 and Z-Z0).
The automatic judgment of the 'machinable' of the image intensifier tube is realized by the following method: if the maximum value (parallel difference) of the height differences of the four points is within a preset value, the image enhancement tube is judged to be 'machinable', otherwise, the image enhancement tube is 'machinable'; if the measured coordinate offset (X-X0, Y-Y0, Z-Z0) is within a preset range, the workpiece can be machined, otherwise, the workpiece can not be machined.
The automatic rounding tool 4 is used for grinding the outer circle of the image enhancement tube, and the implementation mode and the processing parameters are set as follows: drawing a circle with the same diameter as the ground excircle of the output end of the image intensifier tube by using CAD/CAM software JDSoft SurfMill, selecting the drawn circle by using a contour cutting processing method, selecting a flat bottom as a tool, setting the diameter of the tool according to the actual diameter of the round grinding tool 4 for high-precision processing of the output end of the image intensifier tube, and setting the number of the tool according to the installation serial number of the round grinding tool 4 in a tool magazine of a finishing carving machine; the processing parameters are as follows: the path interval is 0.05-0.2 mm, the feeding speed is 400-800 mm/min, the main shaft rotating speed is 12000-16000 rpm, and the cutter is replaced after 500-1400 pieces are processed.
The automatic chamfer cutter 5 is called out to grind the excircle of the image enhancement tube, and the implementation mode and the processing parameters are set as follows: drawing a circle with the same diameter as the small surface of the image intensifier tube output end after chamfering by using CAD/CAM software JDSoft SurfMill, using a contour cutting processing method to process the figure and select the drawn circle, wherein the cutter selects flat bottom taper, the diameter of the cutter bottom and the taper angle are arranged according to the actual shape of the chamfering cutter 5 for high-precision processing of the image intensifier tube output end provided by the invention, and the cutter number is arranged according to the installation serial number of the chamfering cutter 5 in the precise engraving machine tool magazine; the processing parameters are as follows: the path interval is 0.02-0.2 mm, the feeding speed is 300-700 mm/min, the main shaft rotating speed is 15000-20000 rpm, and the cutter is replaced after 200-600 pieces are processed, or the cutter abrasion compensation is modified to change the cutting position of the cutting edge and keep the chamfer size unchanged.
The calculation of the tool wear compensation value according to the machining result is realized by the following mode: after processing, calling a circle center coordinate code for automatically measuring the output surface of the image enhancement tube, performing circle center measurement on the cylindrical surface processed at the station 1, calculating the diameter phi 1 after processing by using the coordinates of three points measured in the measuring step, and automatically calculating the radius compensation D1 of the cutter to be (phi 1-phi 0)/2 by taking the target diameter as phi 0; if | D1| < δ 1, the tool radius compensation resetting is not carried out; if the delta 1 is less than or equal to the | D1| ≦ delta 2, the cutter radius compensation resetting is carried out: d + D1; if | D1| ≧ δ 2, an alarm pops up.
The invention provides a clamp, a cutter and a processing method for high-precision processing of an output end of an image intensifier tube, which have the following working procedures: forming a supporting seat 8 by tightly matching a cushion block 9 with a base 10, and fastening the supporting seat 8 on a processing table top of a fine carving machine through a nut; the input surface of the image intensifier tube faces downwards, and the input surface is placed on the supporting seat 8 in a manner of clinging to the cushion block 9; the elastic pressing ring 6 is broken off along the two sides of the gap, so that the inner diameter of the elastic pressing ring 6 is increased, the chamfer angle at the outer diameter part is upward, and the annular bulge at the minimum inner diameter part of the elastic pressing ring 6 is sleeved in the groove of the isolation ring 12 of the image enhancement tube; sleeving a support seat 8 on a compression nut 7 and screwing; the above operations are repeated to complete the clamping of 10 image intensifier tubes 3. And respectively installing the rounding cutter 4 and the chamfering cutter 5 in a tool magazine of the engraving and milling machine, and numbering the two cutters and measuring the cutter length. The high-precision processing method for the output end of the image intensifier tube provided by the invention is operated, namely, an automatic processing program for the output end of the image intensifier tube is written in a control system of the engraving and milling machine, so that the engraving and milling machine executes the following operations: the main shaft automatically takes out a measuring head of the on-machine measuring system, output face coordinates (X, Y, Z) of the image enhancement tubes 3 of 10 stations are respectively measured and used as processing coordinates, and the image enhancement tubes can be judged to be processed if the offset of the coordinates does not exceed a preset value; the main shaft automatically takes out the rounding cutter 4, and the machinable image enhancement tube 3 is sequentially ground to form an outer circle; the main shaft automatically takes out the chamfering tool 5, and chamfering processing is sequentially carried out on the image enhancement tube 3 which can be processed; the image intensifier tube 3 which is not judged as processable is automatically skipped without processing; and after the machining is finished, automatically measuring the machining size and calculating the wear compensation of the cutter.
Specifically, in the process of screwing the compression nut 7, the countersunk chamfer inclined plane at the inner hole of the compression nut 7 and the chamfer inclined plane of the elastic pressing ring 6 are attached and mutually extruded, so that the elastic pressing ring 6 simultaneously contracts inwards and moves downwards; after the pressing nut 7 is screwed down, the elastic pressing ring 6 inwards tightly holds the groove of the isolation ring 12 of the image enhancement tube and downwards firmly presses the image enhancement tube 3, so that the input surface of the image enhancement tube is tightly attached to the plane of the cushion block 9, and the parallelism difference between the image enhancement tube and the processing table surface of the engraving and milling machine after clamping can meet the requirement.
The clamp for processing the output end of the image intensifier tube with high precision can firmly fix the image intensifier tube on the processing table board of the engraving and milling machine, the parallelism difference between the input surface and the output surface of the fixed image intensifier tube and the processing table board of the engraving and milling machine meets the processing requirement, and the image intensifier tube is convenient to clamp and disassemble in the processing process and has high efficiency.
The cutter for high-precision processing of the output end of the image intensifier tube, provided by the invention, can be used for high-precision processing of the output end of the image intensifier tube by a carving machine, has good cutting performance, does not generate broken edges, and meets the requirements of cutter rotating speed, feed rate, cutting depth (path distance), processing efficiency and service life.
The processing method for high-precision processing of the output end of the image intensifier tube can improve the coaxiality of the output end of the image intensifier tube before and after processing, and reduce the error range to be within 20% of the prior art; the consistency of the processing size can be improved, and the size tolerance range is reduced to be within 27 percent of the prior art; can promote machining efficiency, shorten to prior art's during messenger's single product processing within 43%.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. The utility model provides a anchor clamps of image intensifier tube output high accuracy processing which characterized in that:
the clamp comprises a supporting seat (8), an elastic pressing ring (6) and a compression nut (7);
the supporting seat (8) is fastened on the processing table surface of the engraving and milling machine through screws; the supporting seat (8) is composed of a base (10) and a cushion block (9) positioned on the base (10) in a tight fit mode, and the plane at the top of the cushion block (9) is used for supporting the plane of an input window of the image enhancement tube (3);
the compression nut (7) is connected with the supporting seat (8) through threads, the compression nut (7) can extrude the elastic pressing ring (6) by screwing the threads, and the image intensifier tube is simultaneously pressed inwards and downwards by the elastic pressing ring (6), so that the input surface of the image intensifier tube is tightly attached to the cushion block (9) of the supporting seat (8);
the elastic pressing ring (6) is formed by sawing an elastic annular ring into a gap, and the minimum inner diameter part of the elastic pressing ring is of an annular inward protruding structure.
2. The jig for high precision machining of the output end of an image intensifier tube as recited in claim 1, further comprising:
the inner hole of the gland nut (7) is also provided with a countersunk chamfer, one side of the outer diameter of the elastic pressing ring (6) is provided with a chamfer, and the chamfer is matched with the countersunk chamfer at the inner hole of the gland nut (7).
3. A processing method for high-precision processing of an output end of an image intensifier tube is characterized by comprising the following steps:
s1, forming a supporting seat (8) by the cushion block (9) and the base (10) in a tight fit mode, and fastening the supporting seat (8) on the processing table top of the engraving and milling machine through a nut; the input surface of the image enhancement tube faces downwards, and the input surface is placed on the supporting seat (8) in a manner of clinging to the cushion block (9); the elastic pressing ring (6) is broken off along the two sides of the gap, so that the inner diameter of the elastic pressing ring (6) is increased, the chamfer angle at the outer diameter part is upward, and the annular bulge at the minimum inner diameter part of the elastic pressing ring (6) is sleeved in the groove of the image enhancement pipe isolation ring (12); sleeving a compression nut (7) on a supporting seat (8) and screwing tightly; repeating the operation to finish clamping the image enhancement tubes (3) at all stations;
s2, respectively installing the rounding cutter (4) and the chamfering cutter (5) in a tool magazine of the engraving and milling machine, and numbering the two cutters and measuring the cutter length;
s3, making the engraving and milling machine perform the following high-precision machining operations:
s3.1, automatically taking out a measuring head of the on-machine measuring system by the main shaft, respectively measuring output surface coordinates (X, Y, Z) of the image enhancement tubes (3) of all stations as processing coordinates, and judging that the image enhancement tubes can be processed if the offset of the coordinates does not exceed a preset value;
s3.2, the main shaft automatically takes out the rounding cutter (4), and the machinable image enhancement tube (3) is sequentially ground;
s3.3, the main shaft automatically takes out the chamfering tool (5), and chamfering processing is sequentially carried out on the image enhancement tube (3) which can be processed;
s3.4, the image enhancement tube (3) which is not judged to be machinable is automatically skipped without machining;
and S3.5, automatically measuring the machining size and calculating the wear compensation of the cutter after machining is finished.
4. The method of claim 3, wherein the method of making the engraving machine perform high precision machining comprises:
computer modeling, processing scheme design, processing parameter setting, processing path generation and processing file output are carried out on the processing of the output end of the image intensifier tube by means of CAD/CAM software JDSoft SurfMill, the output processing file in an NC format is imported into an engraving and milling machine control system, multi-station automation and intelligent auxiliary function development are carried out, and a tsk file is formed, and is an executable automatic processing program in the engraving and milling machine control system.
5. The method for processing the output end of the image intensifier tube with high precision as recited in claim 4, wherein the processing method is a processing program, and specifically comprises:
the automatic measuring device can automatically measure the circle center coordinates (X, Y, Z) of the output faces of all the station image enhancement tubes, automatically calculate the coordinate offset, automatically judge whether the image enhancement tubes can be processed, automatically call out a rounding tool (4) to grind the outer circle of the processable image enhancement tubes, automatically call out a chamfering tool (5) to chamfer the processable image enhancement tubes, and calculate the tool abrasion compensation value according to the processing result.
6. The method for processing the output end of the image intensifier tube with high precision as stated in claim 5, wherein the automatic measurement of the coordinates (X, Y, Z) of the center of the circle of the output surface of the image intensifier tube at all stations is realized by the following method:
drawing a circle slightly smaller than the edge of the output surface of the image enhancement tube by using CAD/CAM software JDSoft SurfMill, setting measuring points at or near four quadrant points of the circle by using a curve measuring function, wherein the measuring points are downward in the measuring direction, the average value of height coordinates measured by the four points is used as a circle center coordinate Z of the output surface of the image enhancement tube, the maximum value of height differences of the four points is used for judging a parallel difference, and the image enhancement tube is judged to be 'unmachined' if the height differences exceed a preset value; and drawing a circle with the same size as the edge of the output surface of the image enhancement tube by using CAD/CAM software JDSoft SurfMill, setting measuring points at trisection points of the circle by using a curve measuring function, wherein the measuring direction is inward, the processing depth is greater than the radius of a spherical measuring head, and the circle center coordinates measured by the three points are used as the circle center coordinates (X, Y) of the output surface of the image enhancement tube.
7. The method of claim 6, wherein the automatically calculating the coordinate offset is performed by:
normally clamping the image enhancement tubes of all stations, and measuring circle center coordinates (X0, Y0) of each image enhancement tube by using a program 'circle center' of an engraving and milling machine; then starting a measuring head detection signal lamp, controlling the measuring head by using a hand wheel, measuring a height coordinate Z0 of the output surface of the image enhancement tube according to the change of the signal lamp, and measuring (X0, Y0 and Z0) of all stations by using the method as a preset processing coordinate of the image enhancement tube of the type; and during subsequent processing, taking the preset coordinates as processing coordinates, respectively operating the circle center coordinate programs for automatically measuring the output surfaces of the image enhancement tubes of all the stations for each station to obtain actual circle center coordinates (X, Y and Z), and calculating coordinate offsets to obtain (X-X0, Y-Y0 and Z-Z0).
8. The method for processing the output end of the image intensifier tube with high precision as stated in claim 7, wherein said automatically determining whether the image intensifier tube is "processed" is carried out by:
if the maximum value of the height differences of the four points is within a preset value, the image enhancement tube is judged to be 'machinable', otherwise, the image enhancement tube is 'machinable'; if the measured coordinate offset (X-X0, Y-Y0, Z-Z0) is within a preset range, the workpiece can be machined, otherwise, the workpiece can not be machined.
9. The method for processing the output end of the image intensifier tube with high precision as recited in claim 8, wherein the automatic rounding tool (4) is adjusted out to grind the outer circle of the image intensifier tube, and the implementation and processing parameters are set as follows:
drawing a circle with the same diameter as the ground excircle of the output end of the image intensifier tube by using CAD/CAM software JDSoft SurfMill, selecting the drawn circle by using a contour cutting processing method, selecting a flat bottom as a processing figure, setting the diameter of a cutter according to the actual diameter of the ground circle cutter (4), and setting the number of the cutter according to the installation serial number of the ground circle cutter (4) in a tool magazine of a finishing carving machine; the processing parameters are as follows: the path interval is 0.05-0.2 mm, the feeding speed is 400-800 mm/min, the main shaft rotating speed is 12000-16000 rpm, and the cutter is replaced after 500-1400 pieces are processed.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110046769.7A CN112828602B (en) | 2021-01-14 | 2021-01-14 | Clamp and method for high-precision machining of output end of image intensifier tube |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110046769.7A CN112828602B (en) | 2021-01-14 | 2021-01-14 | Clamp and method for high-precision machining of output end of image intensifier tube |
Publications (2)
| Publication Number | Publication Date |
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| CN112828602A CN112828602A (en) | 2021-05-25 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1498722A (en) * | 2002-11-06 | 2004-05-26 | ���չ�˾ | Side supergrinding machining |
| CN102717342A (en) * | 2012-06-11 | 2012-10-10 | 哈尔滨工业大学 | Milling and grinding tool capable of realizing high-efficient machining of inorganic composite material |
| CN202702010U (en) * | 2012-06-04 | 2013-01-30 | 上海卡贝尼精密陶瓷有限公司 | Grinding head for one-step forming of hole and chamfer for precision ceramic materials |
| CN209288462U (en) * | 2018-10-31 | 2019-08-23 | 厦门佳品金刚石工业有限公司 | A kind of plating tapping frotton |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1498722A (en) * | 2002-11-06 | 2004-05-26 | ���չ�˾ | Side supergrinding machining |
| CN202702010U (en) * | 2012-06-04 | 2013-01-30 | 上海卡贝尼精密陶瓷有限公司 | Grinding head for one-step forming of hole and chamfer for precision ceramic materials |
| CN102717342A (en) * | 2012-06-11 | 2012-10-10 | 哈尔滨工业大学 | Milling and grinding tool capable of realizing high-efficient machining of inorganic composite material |
| CN209288462U (en) * | 2018-10-31 | 2019-08-23 | 厦门佳品金刚石工业有限公司 | A kind of plating tapping frotton |
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