Ceramic radome inner wall groove machining method

Abstract

The invention discloses a method for machining an inner wall groove of a ceramic radome. The method comprises the following steps that a clamp for machining an inner molded surface is connected with a machine tool; the clamp for machining the inner molded surface comprises an external fixing and supporting device and an inner clamping device. The inner clamping device is in sliding connection with the external fixing and supporting device; the external fixing and supporting device is in transmission connection with a first transmission shaft of a machine tool; the external fixing and supporting device is rotationally connected with the machine tool machining platform; detachably connecting the ceramic radome with the inner clamping device; the inner profile machining tool is in transmission connection with a second transmission shaft of the machine tool; a plurality of annularly-distributed grooves are machined in the inner wall of the antenna housing through an inner molded surface machining tool; then the shape of the machined groove is detected through a groove detection device, machining is stopped when the shape of the groove meets the requirement, the groove is machined again when the shape of the groove does not meet the requirement, and after detection, the shape of the groove meets the requirement; the machining precision of the inner molded surface groove of the antenna housing is high.

Description

Technical Field

[0001] The present invention relates to the technical field of ceramic antenna covers, and in particular to the processing of inner wall grooves of ceramic antenna covers. Background Art

[0002] Ceramic radomes are used in the aerospace field and require high thermal insulation, wave transmission, thermal shock resistance, and high processing precision. The inner surface of the radome needs to be machined with multiple grooves to meet the different performance requirements of the radome during use. The grooves require high machining precision, but during machining, the positioning of the ceramic radome is deviated when it is fixed, resulting in reduced machining precision. In addition, because the grooves are located on the inner surface of the ceramic radome and the inner surface is a tapered slope, the machining tool will damage other parts of the inner surface when machining the grooves. The tapered slope of the inner surface of the radome also makes it impossible to use a pin gauge or compass to measure the depth and shape of the grooves after the grooves are machined to ensure that they meet the requirements. Therefore, how to develop a method for processing the inner wall groove of a ceramic antenna cover to achieve high precision in processing the inner surface groove of the antenna cover without causing damage to the inner wall of the ceramic antenna cover and high yield of the antenna cover has become a difficult problem that needs to be solved urgently in this field. Summary of the Invention

[0003] The purpose of the present invention is to provide a method for processing the inner wall groove of a ceramic antenna cover, so as to achieve high processing precision of the inner surface groove of the antenna cover without causing damage to the inner wall of the ceramic antenna cover and achieving high yield of the antenna cover.

[0004] The present invention provides a method for machining an inner wall groove of a ceramic radome, comprising the following steps: connecting a fixture for machining an inner profile to a machine tool; The inner surface processing fixture includes an external fixing support device and an internal clamping device; the internal clamping device is slidably connected to the external fixing support device; Transmission-connecting the external fixed support device to the first transmission shaft of the machine tool; Rotatingly connecting the external fixed support device to the machine tool processing platform; Removably connecting the ceramic radome to the inner clamping device; The inner surface machining tool is connected to the second transmission shaft of the machine tool; Insert the inner surface machining tool into the interior of the ceramic radome; The ceramic antenna cover is driven to rotate by the rotation of the first transmission shaft, and the inner surface processing tool is driven to rotate by the second transmission shaft; A plurality of annularly distributed grooves are machined on the inner wall of the radome by using an inner surface machining tool; Then the recess detection device is used to detect the shape of the processed recess, and the processing is stopped when the recess shape meets the requirements, and the recess is processed again until the recess shape meets the requirements; preferably, the recess is a trapezoidal groove. Preferably, the ceramic radome inner wall groove processing method processes the ceramic radome inner wall to form a plurality of annular recesses through a ceramic radome inner wall groove processing device, and detects the shape of the processed recess. The ceramic radome inner wall groove processing device comprises an inner surface processing clamp, an inner surface processing tool, a recess detection device, a machine tool processing platform, a first transmission shaft transmission of the machine tool, and a second transmission shaft transmission of the machine tool.

[0005] The beneficial effects of the present application over the prior art are that the inner surface processing clamp comprises an external fixed support device and an inner clamping device, the inner clamping device is in sliding connection with the external fixed support device, the ceramic radome and the inner surface processing clamp are fixed and positioned at the same time, and the ceramic radome does not shift after being fixed, thereby facilitating high processing precision of the ceramic radome. The external fixed support device is connected with the first transmission shaft transmission of the machine tool, and the external fixed support device is rotatably connected with the machine tool processing platform, so that the machine tool drives the ceramic radome to rotate through the first transmission shaft, and vibration or displacement during rotation is avoided. The recess detection device is used to detect the shape of the processed recess, thereby avoiding the problem of low precision caused by unqualified first processing of the ceramic radome, and improving the processing precision and the qualified rate of the ceramic radome.

[0006] Further, the external fixed support device comprises a cylinder, a detachable connecting part, a sliding connecting part, and a rotating connecting piece. One end of the cylinder is connected with the detachable connecting part, and the rotating connecting piece is arranged outside the cylinder. The detachable connecting part is provided with a plurality of first limiting grooves, The outer surface of the rotating connecting piece is provided with a second limiting groove. The first transmission shaft is connected with the first limiting connecting piece, and the first limiting connecting piece is provided with a first limiting protrusion matched with the first limiting groove. The machine tool processing platform is connected with a second limiting connecting piece, and the second limiting connecting piece is provided with a second limiting protrusion matched with the second limiting groove. Preferably, the rotating connecting piece comprises a bearing; preferably, the cylinder is provided with a hollow structure near the detachable connecting part, and the cylinder is provided with a reinforcing part near the rotating connecting piece.

[0007] Furthermore, the external fixed support device is connected to the first transmission shaft of the machine tool. The method comprises: engaging the first limiting groove of the detachable connecting portion with the first limiting protrusion of the first connecting member; Then, the detachable connecting portion is connected to the first connecting member by means of bolts or snaps; The process of rotatably connecting the external fixed support device to the machine tool processing platform includes: engaging the second limiting groove of the rotating connecting member with the second limiting protrusion of the second connecting member; Then the rotating connecting member is connected to the second connecting member by bolts or snaps.

[0008] The beneficial effect of the above step is that by setting the first limit of the detachable connection part The card slot is engaged with the first limiting protrusion of the first connecting member; then the detachable connecting part is connected to the first connecting member by bolts or buckles, so that the first transmission shaft and the external fixed support device are connected in transmission, and the first transmission shaft and the external fixed support device are positioned, so as to obtain the coordinates of the external fixed support device in the machine tool coordinate system; and the first transmission shaft drives the external fixed support device to rotate.

[0009] Furthermore, the external fixing support device further includes a plurality of fourth connecting members; the inner wall of the cylinder is connected to the sliding connection part; The inner clamping device includes an end limiter, a first clamping ring, and a second clamping ring; The end limiter, the first clamping ring and the second clamping ring are respectively connected to the first sliding The sliding connection portion is provided with a scale; The central axes of the end stopper, the first clamping ring, and the second clamping ring coincide with each other; Preferably, the end limiter is provided with a plurality of first sliding protrusions, and the first clamping ring is provided with a plurality of The second sliding protrusion is provided, the second holding ring is provided with a plurality of third sliding protrusions, and the sliding connection portion is provided with a first sliding groove; the first sliding protrusion, the second sliding protrusion, and the third sliding protrusion are slidably connected to the first sliding groove; the end limiter, the first holding ring, and the second holding ring are detachably fixed to the sliding connection portion through the fourth connecting member; Preferably, the first retaining ring is located between the end limit piece and the second retaining ring, and the inner diameter of the first retaining ring is smaller than the inner diameter of the second retaining ring.

[0010] Furthermore, the process of detachably connecting the ceramic radome to the inner clamping device includes: The ceramic antenna cover is extended into the interior of the external fixing support device, through the first clamping After the ring and the second clamping ring are installed, the outer surface of the small end of the ceramic antenna cover is fitted with the inner surface of the end limiter, and the vertex of the small end of the antenna cover is overlapped with the end point of the inner surface of the end limiter; Then, the first retaining ring and the second retaining ring are slid, and when the first retaining ring and the second retaining ring are in interference fit with the outer surface of the radome, the sliding of the first retaining ring and the second retaining ring is stopped; Then, the first clamping ring, the second clamping ring and the sliding connection portion are fixed via a fourth connecting piece.

[0011] The beneficial effect of the above step is that by extending the ceramic antenna cover into the fixed support Inside the device, after passing through the first and second clamping rings, the outer surface of the small end of the ceramic radome is fitted with the inner surface of the end stopper, and the vertex of the small end of the radome is aligned with the end point of the inner surface of the end stopper to achieve positioning of the ceramic radome and the inner clamping device; By then sliding the first holding ring and the second holding ring, when the first holding ring and the second holding ring are in interference connection with the outer surface of the antenna cover, the sliding of the first holding ring and the second holding ring is stopped, so that the internal clamping device fixes the ceramic antenna cover, and since the central axes of the end limit piece, the first holding ring and the second holding ring coincide, the coordinate displacement of the ceramic antenna cover after fixation is avoided.

[0012] Furthermore, after the ceramic antenna cover is detachably connected to the inner clamping device, The sliding connection portion is provided with a scale to obtain the coordinates of the end point of the inner surface of the end limiter in the machine tool coordinate system; The coordinates of the inner surface endpoint of the end limiter in the machine tool coordinate system are used as the ceramic antenna The coordinates of the vertex of the small end of the radome, the central axis of the end limiter is the same as the central axis of the ceramic radome; The digital model of the ceramic radome is input into the CNC system of the machine tool. The coordinates of the vertex of the small end of the ceramic radome and the central axis of the ceramic radome are obtained in the machine tool numerical control system to obtain the digital model of the ceramic radome with coordinates in the machine tool coordinate system; According to the coordinates of the grooves in the digital model of the ceramic radome, a groove machining program is generated in the machine tool numerical control system.

[0013] The beneficial effect of adopting the previous step is that a digital model of the ceramic radome with coordinates in the machine tool coordinate system is obtained after the ceramic radome is connected to the first transmission shaft.

[0014] Furthermore, the inner surface machining tool includes a first transmission rod, a second transmission rod, First bevel gear, second bevel gear, cutter head; One end of the first transmission rod is connected to the second transmission shaft in transmission, and the other end is connected to the first bevel gear Wheel connection; One end of the second transmission rod is connected to the second bevel gear, and the other end is connected to the cutter head; The first bevel gear is meshed with the second bevel gear; The first transmission rod and the second transmission rod are arranged perpendicularly; The outer profile of the cutter head is the same as the inner profile of the groove of the ceramic radome; The second transmission shaft is slidably connected to the machine tool processing platform via a sliding device; Preferably, the sliding device includes a power unit base and a slide rail; the second transmission shaft is in transmission connection with the power unit, the power unit is connected to the power unit base, the power unit base is provided with a third slide groove cooperating with the slide rail, and the slide rail is connected to the machine tool platform.

[0015] Furthermore, after inserting the inner surface machining tool into the ceramic antenna cover, Adjust the position of the first transmission rod to align the center axis of the first transmission rod with the center axis of the ceramic antenna cover. The central axes coincide; According to the groove processing program in the machine tool numerical control system, the tool head is controlled to move according to the program to realize the groove processing of the inner surface of the ceramic antenna cover.

[0016] The beneficial effect of the above step is that the first transmission rod and the second transmission rod are connected. The driving shaft is connected to the first bevel gear at one end, and the other end is connected to the first bevel gear; one end of the second transmission rod is connected to the second bevel gear, and the other end is connected to the cutter head, so that the cutter head rotates to process the groove on the inner surface of the ceramic antenna cover while avoiding damage to the inner surface of the ceramic antenna cover caused by the cutter head; The groove processing program in the machine tool CNC system controls the tool head to move and rotate according to the program, thereby achieving high processing accuracy.

[0017] Furthermore, the groove detection device includes a sliding support frame, a first connecting rod, a detection Test components; The sliding support frame is connected to the sliding device via a third connecting member; The sliding support frame includes a first support member arranged perpendicular to the central axis of the first clamping ring, and a second support member and a third support member connected to the first support member; The first support member is provided with a second sliding groove, one end of the first connecting rod is slidably connected to the second sliding groove, and the other end is connected to the detection component; the first connecting rod is perpendicular to the axis of the detection component; the first connecting rod is connected to the second support member via an elastic device; the axis of the elastic device is parallel to the axis of the detection component; The outer surface shape of the detection end of the detection component is the same as the inner surface shape of the groove of the ceramic antenna cover; A laser detection device is provided at a position opposite to the first connecting rod; Preferably, the sliding support frame is connected to the power device base of the sliding device; the first support member, the second support member, and the third support member are arranged in parallel; and the laser detection device is connected to the third support member.

[0018] Furthermore, the process of detecting the shape of the groove after processing includes: The surface machining tool is disengaged from the second transmission shaft; The groove detection device is slidably connected to the machine tool processing platform via a sliding device; The groove detection device is moved by the sliding device to fit the end face of the detection end of the detection component with the inner surface of the groove, and then the ceramic antenna cover is driven to rotate by the first transmission device. The laser detection device is used to detect whether the first connecting rod is displaced. When it is detected that the first connecting rod is in a position where a displacement ≥1mm occurs, the groove shape does not meet the requirements.

[0019] The beneficial effect of adopting the previous step is that a second sliding groove is provided through the first support member, one end of the first connecting rod is slidingly connected to the second sliding groove, and the other end is connected to a detection component; the first connecting rod is perpendicular to the axis of the detection component; the first connecting rod is connected to the second support member through an elastic device; the axis of the elastic device is parallel to the axis of the detection component, so that the groove of the ceramic antenna cover actually processed is detected by the detection end of the detection component having the same axial section as the radial section of the ceramic antenna cover groove. When the actually processed groove has an unqualified part, the first connecting rod will be displaced, but when the detection end of the detection component is separated from the unqualified part, the first connecting rod will return to its original position, and the detection component can be moved to the preset position through the control system; thereby accurately detecting whether the groove has unqualified processing problems, avoiding the problem that when the groove is an irregular groove body, the transmission single-point detection component is complicated to operate and difficult to locate the unqualified position. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of a device for processing grooves on the inner wall of a ceramic radome; Figure 2 Schematic diagram of the cross-sectional structure of the external fixed support; Figure 3 Schematic diagram of the cross-sectional structure of the first clamping ring; Figure 4 Schematic diagram of the tool structure for inner surface machining; Figure 5 Schematic diagram of the groove detection device structure.

[0021] Numbers shown in the figure: 1. first transmission rod; 2. second transmission rod; 3. cutter head; 4. ceramic antenna cover; 5. machine tool processing platform; 6. rotating connecting member; 7. external fixed support device; 8. detachable connecting part; 9. first retaining ring; 10. second sliding protrusion; 11. end limit member; 12. second retaining ring; 13. first slide groove; 14. fourth connecting member; 15. first bevel gear; 16. second bevel gear; 17. second support member; 18. third support member; 19. first support member; 20. detection component; 21. detection end of detection component; 22. first connecting rod; 23. second slide groove; 24. elastic device; 25. laser detection device; 26. third connecting member. DETAILED DESCRIPTION

[0022] In order to better understand the technical solution of the present invention, the present invention is further described below with reference to specific embodiments and drawings.

[0023] Example 1: This embodiment provides a method for processing the inner wall groove of a ceramic antenna cover. Figure 1 The ceramic radome inner wall groove processing device shown includes the following steps: connecting the inner surface processing fixture to the machine tool; The inner surface processing fixture includes: Figure 2 The external fixing support device 7 and the internal clamping device shown are slidably connected to the external fixing support device 7; Transmission-connect the external fixed support device 7 to the first transmission shaft of the machine tool; Rotate and connect the external fixed support device 7 to the machine tool processing platform 5; The external fixed support device includes a cylinder, a detachable connection part 8, a sliding connection part, a rotating connection part 6, and a fourth connection part 14; the inner wall of the cylinder is connected to the sliding connection part; One end of the cylinder is connected to the detachable connecting portion 8; the rotating connecting member 6 is sleeved on the outside of the cylinder; The detachable connecting portion 8 is provided with a plurality of first limiting slots. The outer surface of the rotating connecting member 6 is provided with a second limiting groove; The first transmission shaft is connected to the first limiting connection member. The component is provided with a first limiting protrusion matching the first limiting slot; The machine tool processing platform 5 is connected to a second position-limiting connecting member, and the second position-limiting connecting member is provided with a second position-limiting protrusion matching the second position-limiting groove; the rotating connecting member 6 includes a bearing.

[0024] The process of connecting the external fixed support device 7 to the first transmission shaft of the machine tool includes: engaging the first limiting groove of the detachable connection part 8 with the first limiting protrusion of the first connection member; Then connect the detachable connecting part 8 to the first connecting member by bolts or snaps; The process of rotatably connecting the external fixed support device 7 to the machine tool processing platform 5 includes: Engage the second limiting groove of the rotating connecting member 6 with the second limiting protrusion of the second connecting member; Then the rotating connecting member 6 is connected to the second connecting member through a snap connection.

[0025] Removably connecting the ceramic antenna cover 4 to the inner clamping device; The inner clamping device includes an end limiter 11, a first clamping ring 9, a second clamping ring 12; The end limiter 11, the first retaining ring 9, and the second retaining ring are respectively slidably connected to the first sliding connection portion; the sliding connection portion is provided with a scale; The center axes of the end limiter 11, the first clamping ring 9 and the second clamping ring 12 coincide with each other; Figure 3 The first retaining ring 9 is located between the end stopper 11 and the second retaining ring 12. The inner diameter of the first retaining ring 9 is smaller than the inner diameter of the second retaining ring 12. The first retaining ring 9 and the second retaining ring 12 are both provided with interference fit connectors. The end limiter 11 is provided with a plurality of first sliding protrusions, and the first clamping ring 9 is provided with a plurality of The second sliding protrusion 10, the second holding ring 12 is provided with a plurality of third sliding protrusions, and the sliding connection portion is provided with a first sliding groove 13; the first sliding protrusion, the second sliding protrusion 10, and the third sliding protrusion are slidably connected to the first sliding groove 13; The process of detachably connecting the ceramic radome 4 to the inner clamping device includes: Insert the ceramic antenna cover 4 into the external fixed support device, pass through the first clamping After the ring 9 and the second clamping ring 12 are installed, the outer surface of the small end of the ceramic antenna cover 4 is fitted with the inner surface of the end stopper 11, and the vertex of the small end of the antenna cover is aligned with the end point of the inner surface of the end stopper 11; Then slide the first retaining ring 9 and the second retaining ring 12. When the first retaining ring 9 and the second retaining ring 12 are in interference fit with the outer surface of the radome, stop sliding the first retaining ring 9 and the second retaining ring 12. Then, the first clamping ring 9, the second clamping ring 12 and the sliding connection portion are fixed via a fourth connecting piece.

[0026] After the ceramic antenna cover 4 is detachably connected to the inner clamping device, the ceramic antenna cover 4 is connected by sliding. The coordinates of the end point of the inner surface of the end stopper 11 in the machine tool coordinate system are obtained using the scale provided on the part; the coordinates of the end point of the inner surface of the end stopper 11 in the machine tool coordinate system are used as the coordinates of the vertex of the small end of the ceramic antenna cover 4, and the central axis of the end stopper 11 is the same as the central axis of the ceramic antenna cover 4; The digital model of the ceramic radome 4 is input into the CNC system of the machine tool. The coordinates of the vertex of the small end of the ceramic radome 4 and the central axis of the ceramic radome 4 are obtained in the machine tool numerical control system, and a digital model of the ceramic radome with coordinates in the machine tool coordinate system is obtained; According to the coordinates of the grooves in the digital model of the ceramic radome, a groove machining program is generated in the machine tool numerical control system.

[0027] will be as Figure 4 The inner surface machining tool shown is in driving connection with the second transmission shaft of the machine tool; The inner surface machining tool includes a first transmission rod 1, a second transmission rod 2, a first Bevel gear, second bevel gear 16, cutter head 3; One end of the first transmission rod 1 is connected to the second transmission shaft, and the other end is connected to the first cone Gear 15 connected; One end of the second transmission rod 2 is connected to the second bevel gear 16, and the other end is connected to the cutter head 3; The first bevel gear 15 is meshed with the second bevel gear 16; The first transmission rod 1 and the second transmission rod 2 are arranged perpendicularly; The outer profile of the cutter head 3 is the same as the inner profile of the groove of the ceramic antenna cover; The second transmission shaft is slidably connected to the machine tool processing platform 5 via a sliding device; The sliding device includes a power unit base and a slide rail; the second transmission shaft is connected to the power unit in a transmission manner, the power unit is connected to the power unit base, the power unit base is provided with a third slide groove that cooperates with the slide rail, and the slide rail is connected to the machine tool platform.

[0028] Insert the inner surface machining tool into the ceramic antenna cover 4; Adjust the position of the first transmission rod 1 so that the central axis of the first transmission rod 1 is aligned with the ceramic antenna cover. The central axis of 4 coincides; According to the groove processing program in the numerical control system of the machine tool, the cutter head 3 is controlled to move according to the program to realize the groove processing of the inner surface of the ceramic antenna cover.

[0029] The ceramic antenna cover 4 is driven to rotate by the first transmission shaft, and the inner surface processing tool is driven to rotate by the second transmission shaft; A plurality of annularly distributed grooves are machined on the inner wall of the radome by using an inner surface machining tool; the grooves are trapezoidal grooves; Then, by Figure 5 The groove detection device shown detects the shape of the groove after processing, stops processing when the groove shape meets the requirements, and processes the groove again when the groove shape does not meet the requirements after testing. The groove detection device includes a sliding support frame, a first connecting rod 22, and a detection component 20; The sliding support frame is connected to the sliding device via a third connecting member 26; The sliding support frame includes a first support member 19 arranged perpendicular to the central axis of the first retaining ring 9, and a second support member 17 and a third support member 18 connected to the first support member 19; the first support member 19, the second support member 17, and the third support member 18 are arranged in parallel; The first support member 19 is provided with a second slide groove 23. One end of the first connecting rod 22 is slidably connected to the second slide groove 23, and the other end is connected to the detection component 20. The first connecting rod 22 is perpendicular to the axis of the detection component 20. The first connecting rod 22 is connected to the second support member 17 via an elastic device 24. The axis of the elastic device 24 is parallel to the axis of the detection component 20. The outer surface shape of the detection end 21 of the detection component is the same as the inner surface shape of the groove of the ceramic antenna cover; A laser detection device 25 is provided at a position opposite to the first connecting rod 22 ; the laser detection device 25 is connected to the third support member 18 .

[0030] The process of detecting the shape of the groove after processing includes: Disengage from the second transmission shaft; The groove detection device is slidably connected to the machine tool processing platform 5 via a sliding device; The groove detection device is moved by the sliding device to fit the end face of the detection end 21 of the detection component with the inner surface of the groove, and then the ceramic antenna cover 4 is driven to rotate by the first transmission device. The laser detection device 25 is used to detect whether the first connecting rod 22 is displaced. When it is detected that the first connecting rod 22 is in a position where a displacement ≥1mm occurs, the groove shape does not meet the requirements.

[0031] Example 2 The same contents as those in Example 1 are not described in detail here. The differences between this embodiment and Example 1 are as follows: This embodiment provides a method for processing the inner wall groove of a ceramic antenna cover, which also includes: a hollow structure is provided on the cylinder near the detachable connection part, and a reinforcement part is provided on the cylinder near the rotating connection part.

[0032] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, but should also cover other technical solutions formed by any combination of the above-mentioned technical features or their equivalent features without departing from the inventive concept, for example, the above-mentioned features have similar functions to those disclosed in this application (but not limited to).

Claims

1. A method for processing an inner wall groove of a ceramic antenna cover, characterized in that: The method comprises the following steps: connecting a fixture for inner surface processing to a machine tool; The inner surface processing fixture includes an external fixing support device and an internal clamping device; the internal clamping device is slidably connected to the external fixing support device; Transmission-connecting the external fixed support device to the first transmission shaft of the machine tool; Rotatingly connecting the external fixed support device to the machine tool processing platform; Removably connecting the ceramic radome to the inner clamping device; The inner surface machining tool is connected to the second transmission shaft of the machine tool; Insert the inner surface machining tool into the interior of the ceramic radome; The ceramic antenna cover is driven to rotate by the rotation of the first transmission shaft, and the inner surface processing tool is driven to rotate by the second transmission shaft; A plurality of annularly distributed grooves are machined on the inner wall of the radome by using an inner surface machining tool; Then the groove shape after processing is detected by the groove detection device. When the groove shape meets the requirements, processing is stopped. When the groove shape does not meet the requirements, the groove is processed again until the groove shape meets the requirements after detection.

2. The method for processing the inner wall groove of the ceramic antenna cover according to claim 1, characterized in that: The external fixed support device includes a cylinder, a detachable connection part, a sliding connection part and a rotating connection part; One end of the cylinder is connected to the detachable connection part; the rotating connection piece is sleeved on the outside of the cylinder; The detachable connection portion is provided with a plurality of first limiting slots; A second limiting groove is provided on the outer surface of the rotating connecting member; The first transmission shaft is connected to a first limiting connection member. The component is provided with a first limiting protrusion matching the first limiting slot; The machine tool processing platform is connected to a second position-limiting connecting member, and the second position-limiting connecting member is provided with a second position-limiting protrusion matching the second position-limiting slot.

3. The method for processing the inner wall groove of the ceramic antenna cover according to claim 2, characterized in that: The process of drivingly connecting the external fixed support device to the first transmission shaft of the machine tool includes: engaging the first limiting groove of the detachable connection part with the first limiting protrusion of the first connection member; Then, the detachable connecting portion is connected to the first connecting member by means of bolts or snaps; The process of rotatably connecting the external fixed support device to the machine tool processing platform includes: Engage the second limiting groove of the rotating connecting member with the second limiting protrusion of the second connecting member; Then the rotating connecting member is connected to the second connecting member by bolts or snaps.

4. The method for machining the inner wall groove of a ceramic antenna cover according to claim 2, characterized in that: The external fixed support device also includes a plurality of fourth connecting members; the inner wall of the cylinder is connected to the sliding connection part; The inner clamping device includes an end limiter, a first clamping ring, and a second clamping ring; The end limit piece, the first clamping ring and the second clamping ring are respectively connected to the sliding connection part. The sliding connection portion is provided with a scale; the end limiter, the first clamping ring, and the second clamping ring are detachably fixed to the sliding connection portion through the fourth connecting member; The center axes of the end limiter, the first clamping ring, and the second clamping ring coincide with each other.

5. The method for machining the inner wall groove of a ceramic radome according to claim 4, characterized in that: The process of detachably connecting the ceramic radome to the inner clamping device comprises: The ceramic antenna cover is extended into the interior of the external fixing support device, through the first clamping After the ring and the second clamping ring are installed, the outer surface of the small end of the ceramic antenna cover is fitted with the inner surface of the end limiter, and the vertex of the small end of the antenna cover is overlapped with the end point of the inner surface of the end limiter; Then, the first retaining ring and the second retaining ring are slid, and when the first retaining ring and the second retaining ring are in interference fit with the outer surface of the radome, the sliding of the first retaining ring and the second retaining ring is stopped; Then, the first clamping ring, the second clamping ring and the sliding connection portion are fixed via a fourth connecting piece.

6. The method for machining the inner wall groove of a ceramic radome according to claim 5, characterized in that: After the ceramic antenna cover is detachably connected to the inner clamping device, the coordinates of the end points of the inner surface of the end limiter in the machine tool coordinate system are obtained by using the scale provided on the sliding connection part; The coordinates of the inner surface endpoint of the end limiter in the machine tool coordinate system are used as the ceramic antenna The coordinates of the vertex of the small end of the radome, the central axis of the end limiter is the same as the central axis of the ceramic radome; The digital model of the ceramic radome is input into the CNC system of the machine tool. The coordinates of the vertex of the small end of the ceramic radome and the central axis of the ceramic radome are obtained in the machine tool numerical control system to obtain the digital model of the ceramic radome with coordinates in the machine tool coordinate system; According to the coordinates of the grooves in the digital model of the ceramic radome, a groove machining program is generated in the machine tool numerical control system.

7. The method for processing the inner wall groove of the ceramic antenna cover according to claim 1, characterized in that: The inner surface machining tool includes a first transmission rod, a second transmission rod, a first bevel gear, a second bevel gear, and a cutter head; One end of the first transmission rod is connected to the second transmission shaft in transmission, and the other end is connected to the first bevel gear Wheel connection; One end of the second transmission rod is connected to the second bevel gear, and the other end is connected to the cutter head; The first bevel gear is meshed with the second bevel gear; The first transmission rod and the second transmission rod are arranged perpendicularly; The outer profile of the cutter head is the same as the inner profile of the groove of the ceramic radome; The second transmission shaft is slidably connected to the machine tool processing platform through a sliding device.

8. The method for machining the inner wall groove of a ceramic radome according to claim 7, characterized in that: Adjust the position of the first transmission rod to align the center axis of the first transmission rod with the center axis of the ceramic antenna cover. The central axes coincide; According to the groove processing program in the machine tool numerical control system, the tool head is controlled to move according to the program to realize the groove processing of the inner surface of the ceramic antenna cover.

9. The method for machining the inner wall groove of a ceramic radome according to claim 7, characterized in that: The groove detection device includes a sliding support frame, a first connecting rod, and a detection component; The sliding support frame is connected to the sliding device via a third connecting member; The sliding support frame includes a first support member arranged perpendicular to the central axis of the first clamping ring, and a second support member and a third support member connected to the first support member; The first support member is provided with a second sliding groove, one end of the first connecting rod is slidably connected to the second sliding groove, and the other end is connected to the detection component; the first connecting rod is perpendicular to the axis of the detection component; the first connecting rod is connected to the second support member via an elastic device; the axis of the elastic device is parallel to the axis of the detection component; The outer surface shape of the detection end of the detection component is the same as the inner surface shape of the groove of the ceramic antenna cover; A laser detection device is provided at a relative position of the first connecting rod.

10. The method for machining the inner wall groove of a ceramic radome according to claim 9, characterized in that: The process of detecting the shape of the processed groove includes: separating the inner surface processing tool from the second transmission shaft; The groove detection device is slidably connected to the machine tool processing platform via a sliding device; The groove detection device is moved by the sliding device to fit the end face of the detection end of the detection component with the inner surface of the groove, and then the ceramic antenna cover is driven to rotate by the first transmission device. The laser detection device is used to detect whether the first connecting rod is displaced. When it is detected that the first connecting rod is in a position where a displacement ≥1mm occurs, the groove shape does not meet the requirements.

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