CN112247497B - Machining method of ceramic-based wave rider structure antenna housing - Google Patents
Machining method of ceramic-based wave rider structure antenna housing Download PDFInfo
- Publication number
- CN112247497B CN112247497B CN202011491560.3A CN202011491560A CN112247497B CN 112247497 B CN112247497 B CN 112247497B CN 202011491560 A CN202011491560 A CN 202011491560A CN 112247497 B CN112247497 B CN 112247497B
- Authority
- CN
- China
- Prior art keywords
- radome
- blank
- processing
- boring
- machining
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Milling Processes (AREA)
Abstract
The invention belongs to the technical field of antenna housing processing, and particularly relates to a processing method of a ceramic-based waverider-structured antenna housing. The method comprises the following steps: s1: establishing a first positioning reference, a second positioning reference, a length reference and a first processing reference on the radome blank, and recording difference parameters; s2: pressing and clamping the radome blank on a boring and milling machine in a state that the end face of the large end is vertical, and aligning the radome blank according to the difference parameter of S1; s3: adjusting the boring and milling machine according to the first positioning reference, the second positioning reference, the length reference and the first processing reference in the S1, so that a processing model reference coordinate system of the boring and milling machine is superposed with the radome blank, and the processing allowance on the radome blank is uniform; s4: and processing the radome blank according to the processing allowance in the step S3 to obtain the radome. By the method, an effective rough machining reference is established for the radome blank, the unification of the reference in the product machining process is ensured, and the error is reduced.
Description
Technical Field
The invention belongs to the technical field of antenna housing processing, and particularly relates to a processing method of a ceramic-based waverider-structured antenna housing.
Background
The new generation tactical missile in China develops towards the direction of strong penetration, quick maneuver, accurate strike and quick response, and the special-shaped structure represented by the stored wave rider structure is more and more applied to the structural design of the tactical missile. The ceramic-based wave rider structured radome is an important component of a modern hypersonic missile and is positioned at the front end of the whole missile body, the radome not only has the function of protecting a guidance system of the missile from being damaged due to the influence of aerodynamic force and aerodynamic heat in the combat flight process, but also can ensure effective receiving and transmitting of radar signals, and the aerodynamic shape of the wave rider structure can reduce the aerodynamic resistance of the missile, so that the strong sudden prevention and accurate striking are finally realized.
The inner and outer shapes of the ceramic-based wave-rider structured radome are special-shaped non-revolving body parts composed of free curved surfaces, the inner and outer shapes are processed on a processed radome blank to meet the design requirements, the clamping modes are different during processing due to the structural characteristics of the inner and outer molded surfaces, but the inner and outer molded surfaces have no proper alignment position due to the characteristics of the inner and outer molded surfaces, the processing reference is difficult to establish, and the processing reference of the inner and outer molded surfaces is not uniform. Chinese patent CN109227304A discloses a device and a method for processing a special-shaped closed deep-cavity radome, wherein the processing method uses a tool for clamping a radome blank to establish a positioning reference for processing, but the following problems still exist: firstly, the inner and outer molded surfaces of the radome blank are special-shaped curved surfaces, so that the radome blank does not have an accurate alignment position and is difficult to establish a processing reference; secondly, due to the characteristics of the forming process of the radome blank, the machining allowance of the inner shape and the outer shape of the radome blank is not uniform to a certain extent; and thirdly, the inner and outer shapes of the radome body need to be processed by a station, so that the internal and external processing standards of the radome body blank cannot be unified by the standard established by the clamping tool.
Therefore, in order to overcome the above disadvantages, the present invention is urgently needed to provide a method for processing a ceramic-based wave-rider-structured radome.
Disclosure of Invention
The invention aims to provide a method for processing a ceramic-based wave rider structure radome, and aims to solve the problem that in the prior art, a processing reference is difficult to establish for a special-shaped radome.
The invention provides a processing method of a ceramic-based wave multiplier structure antenna housing, which comprises the following steps: s1: taking a dial indicator and an antenna housing blank, establishing a first positioning reference, a second positioning reference, a length reference and a first processing reference on the antenna housing blank to construct an antenna housing blank coordinate system, and recording difference parameters of the first positioning reference and the second positioning reference measured by the dial indicator; s2: taking a boring and milling machine and an antenna housing blank, tightly pressing and clamping the antenna housing blank on the boring and milling machine in a state that a large end face is vertical through an outer molded surface of the antenna housing blank, and then adjusting the boring and milling machine according to the difference parameter of S1 to align the antenna housing blank; s3: adjusting the boring and milling machine according to the first positioning reference, the second positioning reference, the length reference and the first processing reference in the S1, so that a processing model reference coordinate system of the boring and milling machine is superposed with a coordinate system of the radome blank, and the processing allowance on the outer profile surface and the inner profile surface of the radome blank is uniform; s4: and processing the radome blank according to the processing allowance in the step S3 to obtain the radome.
In the method for processing the ceramic-based waverider-structured radome, S1 preferably includes: s11: taking a tooling plate, a tooling sleeve and an antenna housing blank, installing the tooling plate and a large-end inner hole of the antenna housing blank in a matched manner, and sleeving the tooling sleeve at a small-end ball head of the antenna housing blank; s12: taking a boring and milling machine, clamping a tooling plate through an A-axis chuck of the boring and milling machine, and clamping a tooling sleeve through a tailstock chuck of the boring and milling machine, so that the radome is erected in the boring and milling machine; s13: taking a dial indicator, and aligning the large end of the radome blank piece through tooling plate data measured by the dial indicator; and then, the small end ball head of the radome blank is aligned through tooling sleeve data measured by a dial indicator, so that the center of the small end ball head is coincided with the center of the large end.
In the method for processing the ceramic-based waverider-structured radome, the first positioning criteria in S1 are preferably x1, x2, y1 and y2 on the small-end spherical head XOY plane; the second positioning references are X1, X2, Y1 and Y2 on the large-end XOY plane; the first processing reference is C1 and C2 which take an X axis in an XOY plane as a symmetry axis on the large end; the length reference is H arranged on the end face of the big end of the antenna housing blank.
In the method for processing the ceramic-based waverider-structured radome, S4 preferably includes: s41: taking the inner profile lengthened cutter bar, milling and machining the inner profile of the radome blank according to the machining allowance in the S3 until the machining allowance of the inner profile of the radome blank is 1 mm; s42: establishing a third positioning reference and a second processing reference at the large end of the radome blank through milling, milling the large end extension section of the radome blank, and recording a difference parameter between the third positioning reference and the first positioning reference measured by a dial indicator; s43: converting to the clamping mode in S12, aligning the radome blank according to the difference parameter in S42, and adjusting the radome blank according to a third positioning reference, a second processing reference and a length reference to enable the radome blank to be overlapped with a processing model reference coordinate system of the boring and milling machine; s44: taking an outer profile machining tool to mill the outer profile of the radome blank until the machining allowance is zero; s45: converting to the clamping mode in S2, aligning the radome blank according to the difference parameter in S42, and adjusting the radome blank according to a third positioning reference, a second processing reference and a length reference to ensure that the radome blank coordinate system is superposed with the processing model reference coordinate system of the boring and milling machine; s46: taking a ball head processing cutter to mill and grind a small end ball head of the radome rough part until the processing allowance is zero; s47: grinding the inner profile of the radome blank by using the inner profile lengthened cutter bar until the deviation of the inner profile machining allowance is less than 0.2 mm; and milling the machining allowance of the large end face of the radome blank until the total length deviation of the radome is +/-0.5 mm.
In the method for processing the ceramic-based waverider-structured radome, S2 preferably includes: s21: taking an inner-type machining tool, a dial indicator and a boring and milling machine, installing the inner-type machining tool on an A-axis disc chuck of the boring and milling machine, and adjusting the position of the inner-type machining tool according to measurement data of the dial indicator until the straightness of the inner-type machining tool is less than 0.1mm and the flatness of the inner-type machining tool is less than 0.1 mm; s22: taking an antenna housing blank, a pressing plate and a dial indicator, installing the antenna housing blank in an inner mold machining tool and pressing the antenna housing blank through the pressing plate; adjusting the position of the radome blank in the inner type machining tool according to the measurement data of the dial indicator until the deviation of the large end of the radome blank and the C-axis direction of a machining model reference coordinate system of the boring and milling machine is less than 0.02 mm; s23: and adjusting the angles of the A shaft and the B shaft of the boring and milling machine according to the difference parameter in the S1 until the deviation between the A shaft and the B shaft of the reference coordinate system of the processing model and the coordinate system of the radome blank is less than 0.05 mm.
In the method for processing the ceramic-based waverider-structured radome, S3 preferably includes: s31: rotating a B shaft of the boring and milling machine to enable the axis of the radome blank to coincide with the axis of the boring and milling machine machining model, and cutting the radome blank into a machining model reference coordinate system by using the radome blank large-end datum X1, Y1 and Y2; s32: taking and comparing a large end section of the radome blank and a processing tool path of the processing model at the same position, wherein the distance between the large end section and a length reference H is H1; adjusting the origin position of the reference coordinate system of the machining model according to the comparison result, so that the axial machining allowance of the large end of the radome blank is uniform; s33: taking and comparing the small end section of the radome blank and a processing tool path of the processing model at the same position, wherein the distance between the small end section and a length reference H is H2; adjusting an A shaft and a B shaft of the boring and milling machine according to the comparison result to ensure that the small end of the radome blank piece has uniform axial machining allowance; and verifying that the machining allowance of the large end is uniform again.
In the method for processing the ceramic-based waverider-structured radome, S41 preferably includes: s411: milling the inner-shaped slope surface of the radome rough part by cutting in 7 times with the tool consumption of 1mm per cutter until the machining allowance is 2 mm; s412: milling the whole inner shape of the radome rough blank by 5 times of feed according to the feed consumption of 0.2mm per cutter until the machining allowance is 1 mm; s413: and milling the round corners of the upper wing and the lower wing of the radome rough blank by 5 times of feed with the feed quantity of 0.2mm per cutter until the machining allowance is 1 mm.
In the method for processing the ceramic-based waverider-structured radome as described above, it is further preferable that in S44, the front and back surfaces of the radome blank are respectively subjected to milling by 10 passes until the machining allowance is 0.
In the method for processing the ceramic-based waverider-structured radome, it is more preferable that in S46, the workpiece ball is milled by a cut amount of 0.2mm per cut in 10 passes.
Compared with the prior art, the invention has the following advantages:
according to the radome processing method disclosed by the invention, the first positioning datum, the second positioning datum, the length datum and the first processing datum are established on the radome blank, and the rough datum of the radome blank is established through the datum, so that a foundation can be provided for subsequent positioning, the radome blank can be conveniently processed and clamped by an inner profile and can be conveniently superposed with a reference coordinate system of a processing model of a boring and milling machine in tool setting when being processed and clamped by an outer profile, the uniformity of the datum of the radome blank in the product processing process is ensured, the thickness of the radome wall is uniform, the error between a processed product and a processing model is reduced, the processing allowance of the outer profile and the inner profile of the radome blank can be conveniently and quickly judged, and the tool setting efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a clamping mode of an antenna housing blank in the processing method of the antenna housing with the ceramic-based waverider structure according to the invention;
fig. 2 is a reference position in the radome blank, wherein fig. 2A is a reference position of a ball head at a small end of the radome blank, and fig. 2B is a reference position of a large end of the radome blank;
FIG. 3 is a simulated tool path for a radome blank;
fig. 4 shows another clamping manner of the radome blank member of the invention.
Description of reference numerals:
1-an antenna housing blank, 2-a small end ball head, 3-a large end, 4-a tooling disc, 5-a tooling sleeve, 6-A shaft chuck, 7-a tailstock chuck, 8-a boring and milling machine, 9-a small end machining tool path, 10-a large end machining tool path, 11-a lengthened cutter bar and 12-an internal machining tool.
Detailed Description
Ceramic base is taken advantage of ripples body structure antenna house in this application adopts numerical control planer-type milling machine processing, numerical control planer-type milling machine is equipped with linear axis, rotation axis and parallel axis, wherein linear axis includes the X axle, Y axle and Z axle, the X axle, Y axle and Z axle accord with the cartesian coordinate system, the rotation axis includes the A axle, B axle and C axle, wherein the A axle is the rotation axis around the X axle, the B axle is the rotation axis around the Y axle, the C axle is the rotation axis around the Z axle, the parallel axis includes the U axle, V axle and W axle, wherein the U axle is parallel with the X axle, the V axle is parallel with the Y axle, the W axle is parallel with the Z axle.
Example 1:
the machining method of the ceramic-based waverider-structured radome disclosed in the embodiment comprises the following steps:
s1: taking a dial indicator and an antenna housing blank 1, establishing a first positioning reference, a second positioning reference, a length reference and a first processing reference on the antenna housing blank 1 to construct a coordinate system of the antenna housing blank 1, and recording a difference value parameter of the first positioning reference and the second positioning reference measured by the dial indicator;
s2: taking a boring and milling machine 8 and an antenna housing blank 1, pressing and clamping the antenna housing blank 1 on the boring and milling machine 8 in a state that the end face of the large end 3 is vertical through the outer molded surface of the antenna housing blank 1, and then adjusting the boring and milling machine 8 according to the difference parameter of S1 to align the antenna housing blank 1;
s3: adjusting the boring and milling machine 8 according to the first positioning reference, the second positioning reference, the length reference and the first processing reference in the S1, so that a processing model reference coordinate system of the boring and milling machine 8 is overlapped with a coordinate system of the radome blank 1, and the processing allowance on the outer profile surface and the inner profile surface of the radome blank 1 is uniform;
s4: and processing the radome blank 1 according to the processing allowance in the step S3 to obtain the radome.
Further, S1 includes:
s11: taking a tool disc 4, a tool sleeve 5 and an antenna housing blank 1, installing the tool disc 4 and an inner hole 3 of the large end of the antenna housing blank 1 in a matched mode, and sleeving the tool sleeve 5 at a small end ball head 2 of the antenna housing blank 1;
s12: taking a boring and milling machine 8, clamping a tooling plate 4 through an A-axis chuck 6 of the boring and milling machine 8, and clamping a tooling sleeve 5 through a tailstock chuck 7 of the boring and milling machine 8, so that the radome is erected in the boring and milling machine 8; the clamping mode is shown in figure 1;
s13: taking a dial indicator, and aligning the large end 3 of the radome rough blank 1 through the data of the tooling plate 4 measured by the dial indicator; and then, the small end ball head 2 of the radome blank 1 is aligned through the data of the tooling sleeve 5 measured by a dial indicator, so that the center of the small end ball head 2 is coincided with the center of the large end 3, specifically, as shown in fig. 2, the value of X, Y of the point O in fig. 2A and the value of the point P in fig. 2B in a reference coordinate system of a machining model of the boring and milling machine 8 are the same.
In S1, the size of the inner hole of the large end 3 of the antenna housing blank 1 is matched with the bulge of the tooling plate 4, and specifically, the size can be adjusted by sticking an equal-thickness adhesive tape on the outer wall of the bulge of the tooling plate 4. The mounted radome blank 1 is supported and supported in the boring and milling machine 8 through two ends. And then measuring data of a tooling plate 4 and a tooling sleeve 5 through a dial indicator and adjusting a boring and milling machine 8 to align the radome blank 1 according to the data, wherein in the step, the state of the tooling plate is taken as a reference object, the alignment of the tooling plate is to align the end surface of the large end, the state of the tooling sleeve is taken as a reference object, the alignment of the tooling sleeve is to align the ball head of the small end, namely, the reference surfaces of the tooling plate and the tooling sleeve are measured through the dial indicator, and the measurement data of the dial indicator on the reference surfaces are unchanged or smaller than the deviation value. Specifically, the deviation of the reference value of the large end 3 is required to be less than 0.1mm, and the deviation of the reference value of the small end is required to be less than 0.1 mm.
And then establishing a reference on the radome blank piece 1 in a milling mode. Specifically, the first positioning references in S1 are x1, x2, y1 and y2 on the XOY plane of the small-end ball 2; the second positioning references are X1, X2, Y1 and Y2 arranged on the XOY plane of the large end; the first processing reference is C1 and C2 which take an X axis in an XOY plane as a symmetry axis on the large end; the length reference is H arranged on the end face of the large end of the antenna housing blank. As shown in fig. 2, the first positioning reference is a four-position plane milled on the outer profile of the small-end ball head 2 of the radome blank 1, wherein X1 and X2 are perpendicular to an X axis of an XOY coordinate system, and Y1 and Y2 are perpendicular to a Y axis of the XOY coordinate system; the second positioning reference is a four-position plane milled on the outer profile of the large-end extension section of the radome blank 1, wherein X1 and X2 are perpendicular to an X axis of an XOY coordinate system, and Y1 and Y2 are perpendicular to a Y axis of the XOY coordinate system. The first machining references C1, C2 and the length reference H are all located on the large end face, wherein the length reference H is a point H at any position on the large end face. The difference parameters between the first and second positioning references are the corresponding differences of X1 and X1, X2 and X2, Y1 and Y1, and Y2 and Y2.
Further, S2 includes:
s21: taking an inner-type machining tool 12, a dial indicator and a boring and milling machine 8, installing the inner-type machining tool 12 on an A-axis disc chuck of the boring and milling machine 8, and adjusting the position of the inner-type machining tool 12 according to measurement data of the dial indicator until the straightness of the inner-type machining tool 12 is less than 0.1mm and the flatness of the inner-type machining tool 12 is less than 0.1 mm;
s22: taking an antenna housing blank 1, a pressing plate and a dial indicator, installing the antenna housing blank 1 in an inner mold machining tool 12 and pressing the antenna housing blank 1 through the pressing plate; adjusting the position of the radome blank 1 in the inner type machining tool according to the measurement data of the dial indicator until the deviation of the large end 3 of the radome blank 1 and the C axis direction of the machining model reference coordinate system of the boring and milling machine 8 is less than 0.02 mm;
s23: and adjusting the angles of the shaft A and the shaft B of the boring and milling machine 8 according to the difference parameter in the S1 until the deviation between the shaft A and the shaft B of the reference coordinate system of the processing model and the coordinate system of the radome blank 1 is less than 0.05 mm.
In S21, the straightness and the flatness are both measured by a dial indicator, that is, the measurement data of the variational indicator on the straightness reference surface is less than 0.1mm, and the measurement data on the plane reference surface is less than 0.1 mm. In the step S22, the gap between the radome blank 1 and the inner mold machining tool is filled with a gasket to ensure clamping and positioning, and the clamping position of the radome blank 1 in the inner mold machining tool is changed by adjusting the gasket, so as to adjust the C-axis direction deviation between the end surface of the radome main end 3 and the machining model reference coordinate system of the boring and milling machine 8. Specifically, when the measurement data of the dial indicator for horizontal clamping at any position of the end face of the big end of the radome blank is unchanged or the measurement data is smaller than 0.02mm, it is indicated that the deviation between the big end 3 of the radome blank 1 and the C axis direction of the machining model reference coordinate system of the boring and milling machine 8 is smaller than 0.02 mm. In S23, the deviation between the two coordinate systems can be measured by a dial indicator, specifically, the dial indicator is mounted on a boring and milling machine and can represent a reference coordinate system of the machining model, and the deviation between the reference coordinate system of the machining model and the coordinate system of the radome blank 1 can be obtained by measuring the radome blank by the dial indicator.
Further, S3 includes:
s31: rotating a shaft B of the boring and milling machine 8, specifically, rotating the shaft B by 3.5 degrees, so that the axis of the radome blank 1 is superposed with the axis of the machining model of the boring and milling machine 8, and performing tool setting on the radome blank 1 by using the large end 3 references X1, Y1 and Y2 to a machining model reference coordinate system, wherein the edge of the X1 reference is used for setting a tool W shaft;
s32: taking and comparing a large end section of the radome blank 1 and a processing tool path of a processing model at the same position, wherein the distance between the large end section and a length reference H is H1; adjusting the original point position of the reference coordinate system of the machining model according to the comparison result, so that the circumferential machining allowance of the large end 3 of the radome blank 1 is uniform;
s33: taking and comparing a small end section of the radome blank 1 and a processing tool path of a processing model at the same position, wherein the distance between the small end section and a length reference H is H2; adjusting an axis A and an axis B of the boring and milling machine 8 according to the comparison result, so that the small end of the radome blank 1 is axially machined with uniform allowance; the large end 3 is verified to be uniform in machining allowance again.
In S3, specifically, the distances between the large end section and the small end section in S32 and S33 and the length reference H may be arbitrarily set, specifically, H1=60mm and H2=1250mm, based on the length reference H on the large end face of the radome blank 1.
Specifically, as shown in fig. 3, the small end machining tool path 9 of the machining model at H2 is the end face shape of the machining model at the H2 cross section, and the large end machining tool path 10 of the machining model at H1 is the end face shape of the machining model at the H1 cross section.
Further, S4 includes:
s41: taking the inner profile lengthened cutter bar 11, milling and machining the inner profile of the radome blank 1 according to the machining allowance in the S3 until the machining allowance of the inner profile of the radome blank 1 is 1 mm;
s42: establishing a third positioning reference and a second processing reference at the large end 3 of the radome blank 1 through milling, milling the extended section of the large end 3 of the radome blank 1, and recording a difference parameter between the third positioning reference and the first positioning reference measured by a dial indicator;
s43: converting to the clamping mode in S12, aligning the radome blank 1 according to the difference parameter in S42, wherein the deviation is less than 0.1mm, and adjusting the radome blank 1 according to a third positioning reference, a second processing reference and a length reference to ensure that the radome blank 1 is superposed with a processing model reference coordinate system of the boring and milling machine 8;
s44: taking an outer profile machining tool to mill the outer profile of the radome blank 1 until the machining allowance is zero;
s45: converting to the clamping mode in S2, aligning the radome blank 1 according to the difference parameter in S42, adjusting the radome blank 1 according to a third positioning reference, a second processing reference and a length reference, and enabling a coordinate system of the radome blank 1 to coincide with a reference coordinate system of a processing model of the boring and milling machine 8;
s46: taking a ball head processing cutter to mill a small end ball head 2 of an antenna housing blank 1 until the processing allowance is zero;
s47: grinding the inner profile of the radome blank 1 by using an inner profile lengthened cutter bar until the deviation of the inner profile machining allowance is less than 0.2 mm; and milling the machining allowance of the end face 3 of the large end of the radome blank 1 until the total length deviation of the radome is +/-0.5 mm.
S4 is a specific processing procedure of the radome blank 1, specifically, the processing sequence of the radome blank 1 sequentially includes inner profile processing, large end 3 extension section milling, outer profile processing, small end ball 2 processing, inner profile milling and grinding, and large end 3 end face milling and grinding to a fixed length, wherein the outer profile processing is different from the other processes in clamping manner, specifically, the outer profile processing is as shown in fig. 1, and the other processes are as shown in fig. 4. In step S41, the inner-profile lengthened cutter bar is a machining cutter for an inner profile, specifically, since the inner profile is long, narrow and irregular, in order to machine the inner profile, the machining cutter of the milling and grinding machine needs to be lengthened, and then the inner-profile lengthened cutter bar is obtained.
The third positioning reference and the second processing reference are located at the large end 3 of the radome blank 1, the second positioning reference and the first processing reference are located on the large end 3 extension section of the radome blank 1, and in the step, the third positioning reference and the second processing reference need to be established first and then the large end 3 end face needs to be milled flat, namely the large end extension section needs to be milled flat. Between milling operations, the B-axis angle needs to be counter-rotated by 3.5 °. During the milling operation, the tool is reset by using a reference X1 (also W1), and the end face of the large end 3 is milled by the reversed pressure plate. The third positioning reference comprises X3, X4, Y3 and Y4 on the XOY plane of the large end, which are four planes milled on the outer profile of the large end of the radome blank, wherein X3 and X4 are perpendicular to the X axis of the XOY coordinate system, and Y3 and Y4 are perpendicular to the Y axis of the XOY coordinate system. The difference parameters in S42 are the corresponding differences of X1 and X3, X2 and X4, Y1 and Y3, and Y2 and Y4.
Further, S41 includes:
s411: milling the inner slope surface of the radome rough blank 1 by cutting with the cutting depth of 1mm per cutter in 7 times of cutting feed until the machining allowance is 2 mm;
s412: milling the whole inner shape of the radome rough blank 1 by 5 times of cutting feed with the tool consumption of 0.2mm per cutter until the machining allowance is 1 mm;
s413: and milling the round corners of the upper wing and the lower wing of the radome rough blank 1 to the machining allowance of 1mm by cutting with the cutting feed of 0.2mm per cutter in 5 times.
The inner molded surface of the radome is provided with a slope surface with variable angle sinking, but the preparation of the radome blank 1 is formed by one angle, and the processing allowance of the slope surface blank is larger than the integral processing allowance of the inner mold, so that the processing of the slope surface, the integral inner mold and the processing of round angles of an upper wing and a lower wing are divided.
Further, in S44, the outer profile of the radome blank 1 is milled in 10 passes until the machining allowance is 0. Specifically, the antenna housing is divided into two front and back surfaces by a symmetrical surface, and the front and back surfaces are respectively milled for 10 times until the machining allowance is zero.
Further, in S46, the workpiece ball is milled in 10 passes by a bite of 0.2mm per pass.
During grinding, verifying the machining allowance of the inner mold by using a single-tool path, determining a length interval for removing the machining allowance according to three-coordinate section data, grinding the inner molded surface of the radome, and grinding until the deviation of the machining allowance of the inner mold of each section of a machine tool online measurement diagram is less than 0.2 mm; and (4) removing the end face machining allowance of the inverse pressing plate, and ensuring the deviation of the total length of the antenna housing to be +/-0.5 mm.
In the steps, the radome blank is centered by taking the state of a clamping fixture of the radome blank as a reference for clamping before establishing a first positioning reference, a second positioning reference, a length reference and a first processing reference; after the standard is established, the reference target of alignment in each step is the radome blank corresponding to the difference parameter which is referred to by the reference target, namely the state of the radome blank when the difference parameter is obtained, in the specific implementation, the state of the radome blank is adjusted by taking a positioning reference as a reference and taking the measurement parameter of the dial indicator as a reference in different clamping modes, so that the difference parameter of the radome blank after adjustment is the same as the reference difference parameter, and the alignment is further realized.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. A processing method of a ceramic-based waverider-structured radome is characterized by comprising the following steps:
s1: taking a dial indicator and an antenna housing blank, and establishing a first positioning reference, a second positioning reference, a length reference and a first processing reference on the antenna housing blank to construct an antenna housing blank coordinate system; the first positioning reference is x1, x2, y1 and y2 on the XOY plane of the small-end ball head; the second positioning references are X1, X2, Y1 and Y2 on the large-end XOY plane; the first processing reference is a plane C1 and a plane C2 which are arranged on the large end and take an X axis in an XOY plane as a symmetry axis; the length reference is a point H arranged on the end face of the big end of the antenna housing blank; recording a difference parameter of the first positioning reference and the second positioning reference measured by the dial indicator;
s2: taking a boring and milling machine and an antenna housing blank, tightly pressing and clamping the antenna housing blank on the boring and milling machine in a state that a large end face is vertical through an outer molded surface of the antenna housing blank, and then adjusting the boring and milling machine according to the difference parameter of S1 to align the antenna housing blank;
s3: adjusting the boring and milling machine according to the first positioning reference, the second positioning reference, the length reference and the first processing reference in the S1, so that a processing model reference coordinate system of the boring and milling machine is superposed with a coordinate system of the radome blank, and the processing allowance on the outer profile surface and the inner profile surface of the radome blank is uniform;
s4: and processing the radome blank according to the processing allowance in the step S3 to obtain the radome.
2. The machining method for the ceramic-based wave multiplier structure radome according to claim 1, wherein S1 comprises the following steps:
s11: taking a tooling plate, a tooling sleeve and an antenna housing blank, installing the tooling plate and a large-end inner hole of the antenna housing blank in a matching manner, and installing the tooling sleeve and a small-end ball head of the antenna housing blank in a matching manner;
s12: taking a boring and milling machine, clamping a tooling plate through an A-axis chuck of the boring and milling machine, and clamping a tooling sleeve through a tailstock chuck of the boring and milling machine, so that the radome is erected in the boring and milling machine;
s13: taking a dial indicator, and aligning the large end of the radome blank piece through tooling plate data measured by the dial indicator; and then, the small end ball head of the radome blank is aligned through tooling sleeve data measured by a dial indicator, so that the center of the small end ball head is coincided with the center of the large end.
3. The method for processing the ceramic-based waverider-structured radome according to claim 2, wherein S4 includes:
s41: taking the inner profile lengthened cutter bar, milling and machining the inner profile of the radome blank according to the machining allowance in the S3 until the machining allowance of the inner profile of the radome blank is 1 mm;
s42: establishing a third positioning reference and a second processing reference at the large end of the radome blank through milling, milling the large end extension section of the radome blank, and recording a difference parameter between the third positioning reference and the first positioning reference measured by a dial indicator;
s43: converting to the clamping mode in S12, aligning the radome blank according to the difference parameter in S42, and adjusting the radome blank according to a third positioning reference, a second processing reference and a length reference to enable the radome blank to be overlapped with a processing model reference coordinate system of the boring and milling machine;
s44: taking an outer profile machining tool to mill the outer profile of the radome blank until the machining allowance is zero;
s45: converting to the clamping mode in S2, aligning the radome blank according to the difference parameter in S42, and adjusting the radome blank according to a third positioning reference, a second processing reference and a length reference to ensure that the radome blank coordinate system is superposed with the processing model reference coordinate system of the boring and milling machine;
s46: taking a ball head processing cutter to mill and grind a small end ball head of the radome rough part until the processing allowance is zero;
s47: grinding the inner profile of the radome blank by using the inner profile lengthened cutter bar until the deviation of the inner profile machining allowance is less than 0.2 mm; and milling the machining allowance of the large end face of the radome blank until the total length deviation of the radome is +/-0.5 mm.
4. The method for processing the ceramic-based waverider-structured radome of claim 3, wherein S2 includes:
s21: taking an inner-type machining tool, a dial indicator and a boring and milling machine, installing the inner-type machining tool on an A-axis disc chuck of the boring and milling machine, and adjusting the position of the inner-type machining tool according to measurement data of the dial indicator until the straightness of the inner-type machining tool is less than 0.1mm and the flatness of the inner-type machining tool is less than 0.1 mm;
s22: taking an antenna housing blank, a pressing plate and a dial indicator, installing the antenna housing blank in an inner mold machining tool and pressing the antenna housing blank through the pressing plate; adjusting the position of the radome blank in the inner type machining tool according to the measurement data of the dial indicator until the deviation of the large end of the radome blank and the C-axis direction of a machining model reference coordinate system of the boring and milling machine is less than 0.02 mm;
s23: and adjusting the angles of the A shaft and the B shaft of the boring and milling machine according to the difference parameter in the S1 until the deviation between the A shaft and the B shaft of the reference coordinate system of the processing model and the coordinate system of the radome blank is less than 0.05 mm.
5. The machining method for the ceramic-based wave multiplier structure radome according to claim 4, wherein S3 comprises the following steps:
s31: rotating a B shaft of the boring and milling machine to enable the axis of the radome blank to coincide with the axis of the boring and milling machine machining model, and cutting the radome blank into a machining model reference coordinate system by using the radome blank large-end datum X1, Y1 and Y2;
s32: taking and comparing a large end section of the radome blank and a processing tool path of the processing model at the same position, wherein the distance between the large end section and a length reference H is H1; adjusting the origin position of the reference coordinate system of the machining model according to the comparison result, so that the axial machining allowance of the large end of the radome blank is uniform;
s33: taking and comparing the small end section of the radome blank and a processing tool path of the processing model at the same position, wherein the distance between the small end section and a length reference H is H2; adjusting an A shaft and a B shaft of the boring and milling machine according to the comparison result to ensure that the small end of the radome blank piece has uniform axial machining allowance; and verifying that the machining allowance of the large end is uniform again.
6. The machining method for the ceramic-based wave multiplier structure radome according to claim 5, wherein S41 comprises the following steps:
s411: milling the inner-shaped slope surface of the radome rough part by cutting in 7 times with the tool consumption of 1mm per cutter until the machining allowance is 2 mm;
s412: milling the whole inner shape of the radome rough blank by 5 times of feed according to the feed consumption of 0.2mm per cutter until the machining allowance is 1 mm;
s413: and milling the round corners of the upper wing and the lower wing of the radome rough blank by 5 times of feed with the feed quantity of 0.2mm per cutter until the machining allowance is 1 mm.
7. The machining method for the ceramic-based wave-rider-structured radome according to claim 6, wherein in S44, the outer profile of the radome blank is milled in 10 passes until the machining allowance is 0.
8. The method for processing the ceramic-based waverider-structured radome of claim 7, wherein in S46, the workpiece ball head is milled by 10 passes by the amount of the cut of 0.2mm per pass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011491560.3A CN112247497B (en) | 2020-12-17 | 2020-12-17 | Machining method of ceramic-based wave rider structure antenna housing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011491560.3A CN112247497B (en) | 2020-12-17 | 2020-12-17 | Machining method of ceramic-based wave rider structure antenna housing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112247497A CN112247497A (en) | 2021-01-22 |
| CN112247497B true CN112247497B (en) | 2021-04-06 |
Family
ID=74225836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011491560.3A Active CN112247497B (en) | 2020-12-17 | 2020-12-17 | Machining method of ceramic-based wave rider structure antenna housing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112247497B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113500463B (en) * | 2021-06-17 | 2022-09-06 | 航天材料及工艺研究所 | Profile fitting method and system for special-shaped closed deep-cavity radome |
| CN113601123B (en) * | 2021-08-20 | 2023-03-24 | 湖北三江航天江北机械工程有限公司 | Method for processing thin-wall special-shaped radome body |
| CN114054815B (en) * | 2022-01-18 | 2022-05-10 | 成都飞机工业（集团）有限责任公司 | High-precision special-shaped hole machining method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102120311A (en) * | 2010-12-31 | 2011-07-13 | 东华大学 | Multifunctional composite equipment supporting detection and polishing of inner and outer outlines of antenna housing |
| CN106595498A (en) * | 2016-11-17 | 2017-04-26 | 上海无线电设备研究所 | Integrated device and method for measuring wall thickness and processing inner profile of radome |
| CN107717342A (en) * | 2017-09-27 | 2018-02-23 | 湖北三江航天江北机械工程有限公司 | Special-shaped deep blind hole antenna house processing method |
| CN109227304A (en) * | 2018-09-20 | 2019-01-18 | 航天材料及工艺研究所 | A kind of special-shaped machinery processing apparatus and method for closing deep chamber antenna house |
| CN109702605A (en) * | 2018-12-10 | 2019-05-03 | 航天特种材料及工艺技术研究所 | A kind of special-shaped ceramics antenna house processing unit (plant) and method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9427909B2 (en) * | 2013-03-15 | 2016-08-30 | Ii-Vi Incorporated | Method of generating patterns on doubly-curved surfaces |
-
2020
- 2020-12-17 CN CN202011491560.3A patent/CN112247497B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102120311A (en) * | 2010-12-31 | 2011-07-13 | 东华大学 | Multifunctional composite equipment supporting detection and polishing of inner and outer outlines of antenna housing |
| CN106595498A (en) * | 2016-11-17 | 2017-04-26 | 上海无线电设备研究所 | Integrated device and method for measuring wall thickness and processing inner profile of radome |
| CN107717342A (en) * | 2017-09-27 | 2018-02-23 | 湖北三江航天江北机械工程有限公司 | Special-shaped deep blind hole antenna house processing method |
| CN109227304A (en) * | 2018-09-20 | 2019-01-18 | 航天材料及工艺研究所 | A kind of special-shaped machinery processing apparatus and method for closing deep chamber antenna house |
| CN109702605A (en) * | 2018-12-10 | 2019-05-03 | 航天特种材料及工艺技术研究所 | A kind of special-shaped ceramics antenna house processing unit (plant) and method |
Non-Patent Citations (1)
| Title |
|---|
| 天线罩内廓形数字化测量与数控磨削***研究;季田等;《大连理工大学学报》;20041130;第44卷(第6期);第830-834页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112247497A (en) | 2021-01-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112247497B (en) | Machining method of ceramic-based wave rider structure antenna housing | |
| CN110871369B (en) | Positioning device and machining method for thin-wall special-shaped ceramic radome | |
| CN101478078B (en) | Inner and outer shaped surface precise machining process for antenna cover | |
| CN101774051B (en) | Inclined hole electrosparking processing device and method for adjusting position and angle of electrode | |
| CN109227304B (en) | Machining device and method for special-shaped closed deep-cavity radome | |
| CN103586513B (en) | A kind of processing method of PRECISION HOLE of airplane turbine casing mounting edge | |
| CN106623990A (en) | Accurate machining method for large-diameter aluminum alloy non-uniform section frame ring | |
| CN111390250B (en) | Weak-rigidity thin-wall structural part and machining method thereof and station quick-change positioning and clamping device | |
| CN105364237A (en) | Method for controlling honeycomb size of thin-walled honeycomb part | |
| CN111069642A (en) | Three-dimensional space inclined hole machining process | |
| CN110860947B (en) | Positioning and aligning method | |
| CN110928234A (en) | Use method of universal angle milling head | |
| CN107443169B (en) | A kind of meso-scale milling cutter obliquely intersected recognition methods | |
| CN110125439B (en) | Device for thin-wall bushing unstressed clamping finish turning inner hole and using method | |
| CN104907777B (en) | The processing method of antenna house specific drilling tool three-D space structure pilot hole | |
| CN110587223B (en) | Thin-wall high-position-precision hole series part machining method | |
| CN203664761U (en) | Open type general positioning device | |
| CN111037367B (en) | Finish machining alignment method for high-precision thin-walled workpiece | |
| CN111015282B (en) | Finish machining method for large-tolerance part | |
| CN211966663U (en) | Machining tool for eccentric deflection angle sealing ring | |
| CN104400521A (en) | Angular precise positioning and centering clamping mechanism | |
| CN211759888U (en) | Automatic processing one-time measurement backspacing system and machine tool | |
| CN108655514B (en) | Thread pair with angular position requirement and machining tool and machining method thereof | |
| CN109304642B (en) | A kind of dynamic error compensation method of cutter process system | |
| CN208358273U (en) | A kind of valve pocket boring jig |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |