CN114799746A - Shafting machining method and assembly method of large-span radar rotary table - Google Patents
Shafting machining method and assembly method of large-span radar rotary table Download PDFInfo
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- CN114799746A CN114799746A CN202210372534.1A CN202210372534A CN114799746A CN 114799746 A CN114799746 A CN 114799746A CN 202210372534 A CN202210372534 A CN 202210372534A CN 114799746 A CN114799746 A CN 114799746A
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- pitching support
- rotary table
- pitching
- support arm
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- 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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C1/00—Measuring angles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/10—Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation
Abstract
The invention provides a shafting processing method of a large-span radar turntable, wherein the turntable can rotate along a vertical shaft, two ends of the turntable are respectively provided with a pitching support arm which can be in rotating fit with two ends of an antenna array surface, and the processing of an inner hole of the pitching support arm comprises the following steps of S1: carrying out boring rough machining on the pitching support arms respectively, and then installing the pitching support arms at two ends of the rotary table respectively; s2: respectively performing semi-finish machining on the pitching support arms at the two ends of the rotary table; s3: applying a load plate at the upper ends of the two pitching support arms, and performing finish machining on an inner hole of the pitching support arm at one end; s4: and rotating the rotary table by 180 degrees, and performing finish machining on the inner hole of the pitching support arm at the other end. The invention provides gravity for the load plate, simulates the processing of the shaft holes in the using state, ensures that the precision in the using state meets the requirement, and respectively processes the shaft holes at two sides through the rotating angle, avoids the influence of the rotating shaft angle on the processing precision, and improves the pointing precision of the antenna array surface.
Description
Technical Field
The invention relates to the technical field of machining and assembling of radar turntables, in particular to a shafting machining method and assembling method of a large-span radar turntable.
Background
The measuring radar has functions of trajectory tracking, weapon measurement and control and the like, generally needs a two-dimensional turntable to provide azimuth and pitching two-dimensional rotation motion for an antenna array surface, and the azimuth rotation axis and the pitching rotation axis are directly related to the angle measurement error of the radar. In order to provide detection power, the existing radar develops towards a large-size array surface (more than 10 meters), for example, a precise turntable of a large-inertia radar disclosed in the invention patent application with the application number of 2021114414820 needs to be respectively arranged at two ends of the turntable on a pitching arm in rotating fit with the array surface, and due to the large weight of the array surface, the pitching arm tilts towards the inner side of the array surface after the pitching arm is assembled, and rotating shafts at two ends cannot be kept horizontal; the method brings difficulty to the processing and assembly of the azimuth and pitch axis of the radar turntable.
In the prior art, the processing of an azimuth shaft and a pitch shaft is separated independently, the processing technology of a positioning circle of the azimuth shaft is mature, and the coaxiality of the pitch shaft with large span is ensured by processing two pitch support arms in the same reference mode. When the pitching axis system is assembled, the heights of the two pitching support arms are generally ensured by grinding the transition block, the two pitching support arms need to be adjusted and installed repeatedly, and the whole assembling time is long. In addition, the weight of the antenna array surface with large span reaches more than ten tons, and the antenna array surface and the two pitching support arms are installed and assembled to generate gravity deformation on the turntable, so that the included angle between the axes of the pitching support arms and the horizontal plane is influenced, the perpendicularity error between the azimuth rotating shaft and the pitching rotating shaft is further increased, and finally the pointing accuracy of the antenna array surface is reduced.
Disclosure of Invention
The invention aims to provide a shafting processing method and an assembly method for ensuring absolute coaxiality of pitching support arms at two ends of a large-span radar rotary table.
The invention solves the technical problems through the following technical scheme: a method for processing a shaft system of a large-span radar rotary table comprises the following steps of enabling the rotary table to rotate along a vertical shaft, enabling two ends of the rotary table to be respectively provided with a pitching supporting arm which can be in rotating fit with two ends of an antenna array surface, processing an inner hole of each pitching supporting arm,
s1: carrying out boring rough machining on the pitching support arms respectively, and then installing the pitching support arms at two ends of the rotary table respectively;
s2: respectively performing semi-finish machining on the pitching support arms at the two ends of the rotary table;
s3: applying a load plate at the upper ends of the two pitching support arms, and performing finish machining on an inner hole of the pitching support arm at one end;
s4: and rotating the rotary table by 180 degrees, and performing finish machining on the inner hole of the pitching support arm at the other end.
The invention can bore the pitching support arm step by step to improve the precision, provide the gravity through the load plate, simulate the angle change of the pitching support arm under the action of the gravity, simulate the processing of the shaft hole under the using state, ensure that the precision under the using state meets the requirement, process the shaft holes at two sides through the rotation angle respectively, avoid the influence of the rotation shaft angle on the processing precision and improve the pointing precision of the antenna array surface.
Preferably, the machining precision grade of the rough machining of the boring hole of the pitch arm is IT9, and the machining size is 0.5mm smaller than the design size.
Preferably, the machining size of the semi-finishing is 0.1mm smaller than the design size.
Preferably, the weight of the load plate is substantially the same as the weight of the antenna array.
Preferably, the inner hole of the pitching support arm is subjected to finish machining by using a numerical control milling machine.
The invention also provides a shafting assembly method of the large-span radar rotary table, the pitching support arm is processed by using the method, the assembly method comprises the following steps,
s5: measuring an included angle between the axial direction and the horizontal direction of the pitching support arm after the load plate is removed;
s6: applying unilateral loads on two sides of the turntable respectively to enable the axial direction of the pitching support arm to be parallel to the horizontal direction;
s7: removing one pitching support arm, and suspending the antenna array surface above the turntable, so that one end of the antenna array surface is fixedly matched with the shaft hole of the fixed pitching support arm;
s8: matching the pitching support arm on the other side with the rotating shaft of the antenna array surface, and then fixing the pitching support arm on the turntable; the unilateral load on both sides is removed.
Preferably, the included angle of the pitching support arm axial direction relative to the horizontal direction is measured by a laser tracker.
Preferably, the antenna array surface is hoisted by at least one travelling crane, and the travelling crane is matched with at least two ends of the antenna array surface.
The shafting processing method and the assembly method of the large-span radar turntable provided by the invention have the advantages that: the pitching support arm is bored step by step to improve the precision, gravity is provided through the load plate, the angle change of the pitching support arm under the action of the gravity is simulated, the processing of the shaft hole is carried out under the simulation use state, the precision meeting requirements under the use state are ensured, the shaft holes on two sides are respectively processed through the rotation angle, the influence of the rotation shaft angle on the processing precision is avoided, and the pointing precision of the antenna array surface is improved. When the antenna is assembled, the shaft holes of the pitching support arms on two sides are kept horizontal through the single-side balance weight, the mismatching of the angles of the pitching support arms and the antenna array surface is prevented, and the assembling precision is improved.
Drawings
Fig. 1 is a schematic view of a large-span radar rotary table provided by an embodiment of the present invention;
fig. 2 is a schematic view of a processing method of a large-span radar rotary table according to an embodiment of the present invention;
fig. 3 is a first schematic view of a shafting assembly method of a large-span radar rotary table according to an embodiment of the present invention;
fig. 4 is a schematic view of a shafting assembly method of a large-span radar rotary table according to an embodiment of the present invention;
fig. 5 is a schematic view of a third shafting assembly method of a large-span radar rotary table according to an embodiment of the present invention.
Detailed Description
To make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention are described below in detail and completely with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
As shown in fig. 1, the present embodiment provides a method for processing a shaft system of a large-span radar turntable, comprising a turntable 1 capable of rotating around a vertical axis and pitching arms 2 fixed at both ends of the turntable 1, wherein the step of processing inner holes of the pitching arms 2 comprises,
s1: the pitching support arms 2 are respectively subjected to boring rough machining and then are respectively installed at two ends of the rotary table 1;
the machining size of the rough machining is 0.5mm smaller than the design size of the inner hole, and the machining precision grade is IT 9;
s2: respectively performing semi-finish machining on the pitching support arms 2 at the two ends of the rotary table 1; the machining size of the semi-finishing is 0.1mm smaller than the design size,
s3: referring to fig. 2, a load plate 4 is applied to the upper ends of two pitch arms 2, and the inner holes of the pitch arms at one end are finished;
the load plate 4 is designed according to the weight of the antenna array surface 3, so that the weight of the load plate 4 is basically consistent with that of the antenna array surface 3, the load plate 4 is pressed on the upper ends of the pitching support arms 2 at the two ends, the pitching support arms 2 at the two ends are inclined under the action of gravity by simulating the weight of the antenna array surface 3, and then the inner hole of one pitching support arm 2 is subjected to finish machining by using a numerical control milling machine 5, so that the design size is met.
S4: and rotating the rotary table by 180 degrees, and performing finish machining on the inner hole of the pitching support arm 2 at the other end.
Through processing after the rotation angle, the angle deviation caused by the deviation of the vertical shaft relative to the vertical direction can be effectively eliminated, the absolute coaxiality of the pitching support arms 2 at the two ends is ensured, and the processing precision is improved.
Further, the embodiment also provides an assembly method for installing the antenna array surface on the large-span radar rotary table, after the boring and finish machining of the pitching support arms 2 at the two ends are completed, the load plate 4 is removed, at this time, the pitching support arms 2 at the two sides can automatically reset to cause the shaft hole to incline and deviate from the horizontal direction, and the inclination adjustment angle of the antenna array surface is inconvenient to control due to the fact that the weight of the antenna array surface is large during final assembly, so that direct assembly can be difficult.
The assembly method provided by the embodiment comprises the following steps:
s5: measuring the included angle between the axial direction and the horizontal direction of the pitching support arm 2 after the load plate 4 is removed;
in the embodiment, the included angle of the axial direction of the pitching support arm 2 relative to the horizontal direction is measured by a laser tracker;
s6: referring to fig. 3, unilateral loads 6 are respectively applied to both sides of the turntable 1, such that the axial direction of the pitching arm 2 is parallel to the horizontal direction;
the single-side load 6 is directly placed on the rotary table 1, the angle change is detected through a laser tracker, and when the pitching support arm 2 axially restores to the horizontal direction under the action of the single-side load 6, the weight and the position of the single-side load 6 are determined;
s7: referring to fig. 4, one of the pitching arms 2 is removed, and the antenna array 3 is suspended above the turntable 1, so that one end of the antenna array 3 is fixedly fitted with the shaft hole of the fixed pitching arm 2;
the antenna array surface 3 is hoisted by a travelling crane 7, the travelling crane 7 at least needs to be matched with two ends of the antenna array surface 3, and one travelling crane 7 can be used or two travelling cranes 7 can be separately used;
s8: referring to fig. 5, the pitching supporting arm 2 on the other side is matched with the rotating shaft of the antenna array surface, and then the pitching supporting arm is fixed on the turntable 1; removing the unilateral loads on two sides;
and the other pitching support arm 2 is suspended and fixed through another travelling crane 7, is fixed with a rotating shaft of the antenna array surface 3 and then is installed on the rotary table 1, the unilateral loads 6 on two sides are removed, and then the antenna array surface 3 and the pitching support arm 2 are respectively disengaged from the travelling crane 7.
In the embodiment, the pitching arms 2 on two sides are kept horizontal by applying unilateral loads respectively, and then the antenna array surface 3 is installed, so that the antenna array surface 3 and the pitching arms 2 are matched along the horizontal direction, the structural safety is prevented from being influenced by angle deviation, and the pointing accuracy of the antenna array surface is improved.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. A shafting processing method of a large-span radar rotary table is characterized by comprising the following steps: the turntable can rotate along a vertical shaft, the two ends of the turntable are respectively provided with a pitching supporting arm which can be in rotating fit with the two ends of the antenna array surface, the processing of the inner hole of the pitching supporting arm comprises the following steps,
s1: carrying out boring rough machining on the pitching support arms respectively, and then installing the pitching support arms at two ends of the rotary table respectively;
s2: respectively performing semi-finish machining on the pitching support arms at the two ends of the rotary table;
s3: applying a load plate at the upper ends of the two pitching support arms, and performing finish machining on an inner hole of the pitching support arm at one end;
s4: and rotating the rotary table by 180 degrees, and performing finish machining on the inner hole of the pitching support arm at the other end.
2. The shafting processing method of the large-span radar rotary table according to claim 1, wherein: the machining precision grade of the pitching support arm boring rough machining is IT9, and the machining size is 0.5mm smaller than the design size.
3. The shafting processing method of the large-span radar rotary table according to claim 1, wherein: the machining size of the semi-finishing is 0.1mm smaller than the design size.
4. The shafting processing method of the large-span radar rotary table according to claim 1, wherein: the weight of the load board is substantially the same as the weight of the antenna array.
5. The shafting processing method of the large-span radar rotary table according to claim 1, wherein: and (5) performing finish machining on the inner hole of the pitching supporting arm by using a numerical control milling machine.
6. A shafting assembly method of a large-span radar rotary table is characterized by comprising the following steps: a pitch arm fabricated by the method of any one of claims 1 to 5, the method of assembly comprising,
s5: measuring an included angle between the axial direction and the horizontal direction of the pitching support arm after the load plate is removed;
s6: applying unilateral loads on two sides of the rotary table respectively to enable the axial direction of the pitching support arm to be parallel to the horizontal direction;
s7: removing one pitching support arm, and suspending the antenna array surface above the turntable, so that one end of the antenna array surface is fixedly matched with the shaft hole of the fixed pitching support arm;
s8: matching the pitching support arm on the other side with the rotating shaft of the antenna array surface, and then fixing the pitching support arm on the turntable; the unilateral load on both sides is removed.
7. The shafting assembly method of the large-span radar rotary table according to claim 6, wherein: and measuring the included angle of the pitching support arm in the axial direction relative to the horizontal direction through a laser tracker.
8. The shafting assembly method of the large-span radar rotary table according to claim 6, wherein: the antenna array surface is lifted by at least one travelling crane, and the travelling crane is matched with at least two ends of the antenna array surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210372534.1A CN114799746B (en) | 2022-04-11 | 2022-04-11 | Shafting machining method and assembly method of large-span radar turntable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210372534.1A CN114799746B (en) | 2022-04-11 | 2022-04-11 | Shafting machining method and assembly method of large-span radar turntable |
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| CN114799746A true CN114799746A (en) | 2022-07-29 |
| CN114799746B CN114799746B (en) | 2023-05-02 |
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| CN202210372534.1A Active CN114799746B (en) | 2022-04-11 | 2022-04-11 | Shafting machining method and assembly method of large-span radar turntable |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101036948A (en) * | 2007-04-29 | 2007-09-19 | 北京航天控制仪器研究所 | Finish machining method of the frame of the rotating table |
| GB201002111D0 (en) * | 2010-02-09 | 2010-03-24 | Azure Shine Int Inc | Antenna mount |
| CN102079045A (en) * | 2009-12-01 | 2011-06-01 | 贵州航天控制技术有限公司 | Processing method of parts with long shaft and thin wall and processing clamp thereof |
| CN102350617A (en) * | 2011-09-08 | 2012-02-15 | 中国航空工业第六一八研究所 | Method for processing high-accuracy easily-deformable U-shaped cantilever structural member |
| CN103769810A (en) * | 2013-12-20 | 2014-05-07 | 河北汉光重工有限责任公司 | Technology for controlling coaxiality precision of U-shaped support combination |
| CN105752266A (en) * | 2016-02-29 | 2016-07-13 | 上海外高桥造船有限公司 | Technological method for large-ship segmented shafting boring installation |
| CN205950360U (en) * | 2016-07-22 | 2017-02-15 | 常州第四无线电厂有限公司 | Make frock of three -dimensional revolving stage |
| CN106428415A (en) * | 2016-09-20 | 2017-02-22 | 中交航局第三工程有限公司 | Stern shaft tube mounting technology using hole-boring-free method |
| CN111478015A (en) * | 2020-06-08 | 2020-07-31 | 中国电子科技集团公司第十四研究所 | High-precision driving and supporting integrated device for large heavy-load phased array antenna array surface |
| CN111740207A (en) * | 2020-07-03 | 2020-10-02 | 中国电子科技集团公司第十四研究所 | Three-point bearing large-scale heavy-load high-precision two-dimensional phase-scanning radar antenna pedestal |
-
2022
- 2022-04-11 CN CN202210372534.1A patent/CN114799746B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101036948A (en) * | 2007-04-29 | 2007-09-19 | 北京航天控制仪器研究所 | Finish machining method of the frame of the rotating table |
| CN102079045A (en) * | 2009-12-01 | 2011-06-01 | 贵州航天控制技术有限公司 | Processing method of parts with long shaft and thin wall and processing clamp thereof |
| GB201002111D0 (en) * | 2010-02-09 | 2010-03-24 | Azure Shine Int Inc | Antenna mount |
| CN102350617A (en) * | 2011-09-08 | 2012-02-15 | 中国航空工业第六一八研究所 | Method for processing high-accuracy easily-deformable U-shaped cantilever structural member |
| CN103769810A (en) * | 2013-12-20 | 2014-05-07 | 河北汉光重工有限责任公司 | Technology for controlling coaxiality precision of U-shaped support combination |
| CN105752266A (en) * | 2016-02-29 | 2016-07-13 | 上海外高桥造船有限公司 | Technological method for large-ship segmented shafting boring installation |
| CN205950360U (en) * | 2016-07-22 | 2017-02-15 | 常州第四无线电厂有限公司 | Make frock of three -dimensional revolving stage |
| CN106428415A (en) * | 2016-09-20 | 2017-02-22 | 中交航局第三工程有限公司 | Stern shaft tube mounting technology using hole-boring-free method |
| CN111478015A (en) * | 2020-06-08 | 2020-07-31 | 中国电子科技集团公司第十四研究所 | High-precision driving and supporting integrated device for large heavy-load phased array antenna array surface |
| CN111740207A (en) * | 2020-07-03 | 2020-10-02 | 中国电子科技集团公司第十四研究所 | Three-point bearing large-scale heavy-load high-precision two-dimensional phase-scanning radar antenna pedestal |
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| CN114799746B (en) | 2023-05-02 |
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