CN109676545B - Positioning and clamping device for conical antenna housing - Google Patents
Positioning and clamping device for conical antenna housing Download PDFInfo
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- CN109676545B CN109676545B CN201710971091.7A CN201710971091A CN109676545B CN 109676545 B CN109676545 B CN 109676545B CN 201710971091 A CN201710971091 A CN 201710971091A CN 109676545 B CN109676545 B CN 109676545B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
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Abstract
The invention provides a positioning and clamping device for a conical radome, wherein the conical radome is provided with a first end and a second end, the diameter of the first end of the conical radome is smaller than that of the second end, and the positioning and clamping device comprises: the first positioning part is attached to the inner surface or the outer surface of the first end of the conical antenna housing and used for limiting the conical antenna housing to move along the radial direction and the axial direction; the second positioning part is attached to the end face of the second end of the conical antenna housing and used for limiting the movement of the conical antenna housing along the axial direction; the adjusting fixing part is attached to the outer surface of the conical antenna housing and used for fixedly clamping the conical antenna housing. By applying the technical scheme of the invention, the technical problem that the high-permeability quartz ceramic radome is difficult to clamp and position in a vacuum adsorption mode in the prior art is solved.
Description
Technical Field
The invention relates to the technical field of precision manufacturing, in particular to a positioning and clamping device for a conical antenna housing.
Background
The missile radome has important functions of protection, transmission, rectification, heat insulation, stealth and the like on a missile radar antenna system (or electronic equipment), is an integral important component of missile weaponry, and has important influence on the performance of modern weaponry. The modern high-speed missile radome usually adopts quartz wave-transparent ceramic materials, belongs to hard and brittle materials which are difficult to process, low in tensile strength, porous and high in air permeability, and the radome is of a thin-wall structure with one end being sealed in a conical shape and large in length-diameter ratio, the surface of a formed blank is extremely rough, the process reference is difficult to determine during machining, and a stable and reliable positioning and clamping device is lacked. With the increasing wide application of the missile radome, the invention needs to invent a flexible adjustable processing and clamping device suitable for actual production.
The common installation method is that the radome is integrally clamped and positioned by mechanical clamping and port positioning combined with a vacuum adsorption system during machining at present, however, the radome has high air permeability during machining of the quartz ceramic wave-transparent radome, and therefore the radome cannot be clamped and positioned by adopting a vacuum adsorption mode in the prior art.
Disclosure of Invention
The invention provides a positioning and clamping device for a conical antenna housing, which can solve the technical problem that a high-air-permeability quartz ceramic antenna housing is difficult to clamp and position in a vacuum adsorption mode in the prior art.
The invention provides a positioning and clamping device for a conical radome, wherein the conical radome is provided with a first end and a second end, the diameter of the first end of the conical radome is smaller than that of the second end, and the positioning and clamping device comprises: the first positioning part is attached to the inner surface or the outer surface of the first end of the conical antenna housing and used for limiting the conical antenna housing to move along the radial direction and the axial direction; the second positioning part is attached to the end face of the second end of the conical antenna housing and used for limiting the movement of the conical antenna housing along the axial direction; the adjusting fixing part is attached to the outer surface of the conical antenna housing and used for fixedly clamping the conical antenna housing.
Further, the positioning and clamping device is used for the outer surface machining process of the conical antenna housing, and the first positioning part comprises: the supporting rod is provided with a first end and a second end, and the first end of the supporting rod is matched with a spindle hole of the processing machine tool; the toper props the ring, and the toper props the second end department that the ring set up at the bracing piece, and the toper props the interior surface laminating of ring and the first end department of toper antenna house.
Further, first locating part still includes and keeps off ring and elastic component, keeps off ring and elastic component and all sets up the second end department at the bracing piece, keeps off ring and bracing piece threaded connection, and the elastic component setting is kept off between ring and the toper brace ring, and the movably setting of toper brace ring is held at the second end department at the bracing piece.
Further, the toper support ring includes first layer and second floor, and the second floor sets up the skin at the first layer, and the material of first layer is metal material, and the material of second floor is the nylon materials.
Further, adjust the fixed part and be a plurality ofly, second location portion is the ring flange, and a plurality of fixed parts of adjusting set up the periphery at the ring flange evenly at interval, and a plurality of fixed parts of adjusting are used for the second end of the tight toper antenna house of fixed clamp.
Further, the positioning and clamping device is used for the positioning and clamping device of the inner surface machining process of the conical antenna housing, the first positioning portion comprises a conical positioning block, the conical positioning block comprises a conical inner hole, the outer surface of the conical positioning block is matched with a spindle hole of a machining machine tool, and the conical inner hole is attached to the outer surface of the first end of the conical antenna housing.
Further, the positioning and clamping device further comprises a supporting frame, the adjusting fixing parts are multiple, the adjusting fixing parts are a first group of adjusting fixing parts and a second group of adjusting fixing parts, the first group of adjusting fixing parts and the second group of adjusting fixing parts are arranged on the supporting frame at intervals along the axis direction of the conical antenna housing, and the multiple adjusting fixing parts are used for fixedly clamping the conical antenna housing.
Further, second location portion includes the baffle, and the baffle setting is on the support frame, and the baffle is laminated with the terminal surface of the second end department of toper antenna house in order to restrict the removal of toper antenna house along axial direction.
Furthermore, adjust the fixed part including connecting bent plate, adjusting screw and arc briquetting, connect the bent plate setting on ring flange or support frame, adjusting screw's first end with connect bent plate threaded connection, arc briquetting and adjusting screw's second end swing joint.
Further, adjusting screw is including connecting the spheroid, connects the spheroid setting at adjusting screw's second end, and the arc briquetting includes spherical groove, connects spheroid and spherical groove to cooperate in order to realize arc briquetting and adjusting screw's swing joint.
By applying the technical scheme of the invention, the first positioning part is arranged to limit the movement of the conical antenna housing along the radial direction and the axial direction, the second positioning part is arranged to limit the movement of the conical antenna housing along the axial direction, and the fixing part is adjusted to fixedly clamp the conical antenna housing.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
Fig. 1 is a schematic structural diagram illustrating a positioning and clamping device for machining an outer surface of a conical radome according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram illustrating a positioning and clamping device for machining an inner surface of a conical radome according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram illustrating an adjustment fixing portion according to an embodiment of the present invention.
Wherein the figures include the following reference numerals:
10. a first positioning portion; 11. a support bar; 12. a tapered support ring; 13. a baffle ring; 14. an elastic member; 11', a conical positioning block; 111', a tapered inner bore; 20. a second positioning portion; 30. adjusting the fixed part; 31. connecting the bent plates; 32. adjusting the screw rod; 321. connecting the spheres; 33. an arc-shaped pressing block; 331. a spherical recess; 34. connecting a pressure plate; 35. countersunk head screws; 36. a connecting screw; 40. a support frame; 100. a conical radome; 200. a pull rod.
Detailed Description
Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In the following description, for purposes of explanation and not limitation, specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be apparent to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details.
It should be noted that, in order to avoid obscuring the present invention with unnecessary details, only the device structures and/or processing steps that are closely related to the scheme according to the present invention are shown in the drawings, and other details that are not so relevant to the present invention are omitted.
As shown in fig. 1 and 2, according to an embodiment of the present invention, there is provided a positioning and clamping device for a tapered radome, the tapered radome 100 having a first end and a second end, the diameter of the first end of the tapered radome 100 being smaller than that of the second end, the positioning and clamping device including a first positioning portion 10, a second positioning portion 20 and an adjustment fixing portion 30, wherein the first positioning portion 10 is attached to an inner surface or an outer surface of the first end of the tapered radome, the first positioning portion 10 is used for limiting movement of the tapered radome in a radial direction and an axial direction, the second positioning portion 20 is attached to an end surface of the second end of the tapered radome, the second positioning portion 20 is used for limiting movement of the tapered radome in the axial direction, the adjustment fixing portion 30 is attached to an outer surface of the tapered radome, and the adjustment fixing portion 30 is used for fixedly clamping the tapered radome.
Use this kind of configuration, through setting up first location portion 10 in order to restrict the removal of toper antenna house along radial direction and axial direction, second location portion 20 is in order to restrict the removal of toper antenna house along axial direction, simultaneously through adjusting fixed part 30 with the tight toper antenna house of fixed clamp, the clamping device of location of this kind of mode is whole to press from both sides in order to realize the location of toper antenna house through mechanical structure tightly, the structural style is succinct, can solve among the prior art can't press from both sides the technical problem of tight location to the high gas permeability antenna house through the vacuum adsorption mode, this clamping device of location convenient operation, it is stable and reliable, the device is more suitable for actual production, the application range of clamping device of location has greatly been enlarged.
As an aspect of the present invention, the locating and clamping device may be configured as a locating and clamping device for a machining process of an outer surface of a tapered radome, wherein the first locating portion 10 includes a support rod 11 and a tapered support ring 12, the support rod 11 has a first end and a second end, the first end of the support rod 11 is attached to a spindle hole of a machining tool, the tapered support ring 12 is disposed at the second end of the support rod 11, and the tapered support ring 12 is attached to an inner surface of the tapered radome 100 at the first end.
By applying the configuration mode, the first end of the support rod 11 is attached to a spindle hole of a processing machine tool, and the conical support ring 12 is attached to the inner surface of the first end of the conical antenna housing 100, so that the axis of the support rod 11 and the axis of the processing machine tool can be automatically consistent, and the conical antenna housing 100 can be limited to move along the radial direction and the axial direction by attaching the conical support ring 12 to the inner surface of the conical antenna housing.
Further, in the present invention, in order to enable the first positioning portion 10 to position the radome having different lengths and different taper diameters, the first positioning portion 10 may be configured to further include a baffle ring 13 and an elastic member 14, the baffle ring 13 and the elastic member 14 are both disposed at the second end of the support rod 11, the baffle ring 13 is screwed with the support rod 11, the elastic member 14 is disposed between the baffle ring 13 and the taper support ring 12, and the taper support ring 12 is movably disposed at the second end of the support rod 11.
Use this kind of configuration, through keeping off ring 13 and bracing piece 11 threaded connection, elastic component 14 sets up between keeping off ring 13 and toper support ring 12, the movably second end department that sets up at bracing piece 11 of toper support ring 12, thereby at the in-process to toper antenna house 100 location, when the internal surface diameter of toper antenna house 100 changes, through adjusting the position of keeping off ring 13 on bracing piece 11, can ensure that elastic component 14 gives the certain axial supporting force of toper support ring 12, thereby make the internal surface of toper support ring 12 and toper antenna house 100 closely cooperate. The positioning mode is not influenced by the changes of the shape size and the surface form of the conical radome, can be used for the whole machining process of the conical radome, and can not only carry out rough machining on rough conical radome blanks, but also carry out finish machining on the conical radomes with smooth surfaces.
Specifically, as an embodiment of the present invention, as shown in fig. 1, in order to realize both the fitting with the spindle hole of the machine tool and the supporting and mounting of the tapered supporting ring 12, the supporting rod 11 may be configured as a stepped variable cross-section long rod, wherein a numerically controlled lathe may be selected as the machine tool, the first end of the supporting rod 11 is a straight conical structure, the straight conical structure has a constant taper angle with the spindle hole of the numerically controlled lathe, and the first end of the supporting rod 11 is matched with the spindle hole of the numerically controlled lathe, so that the supporting rod 11 and the axis of the numerically controlled lathe can be automatically aligned. The diameter of the second end of the support rod 11 is smaller than that of the first end, the second end of the support rod 11 is a high-precision and high-finish polished rod, threads are arranged at the middle section of the polished rod, the baffle ring 13 is a metal ring with internal threads, and the baffle ring 13 can be axially adjusted on the support rod 11 through the threads. In order to fix the support rod 11, the support rod 11 may be fixed by a draw bar 200 which passes through a spindle hole of the numerically controlled lathe and is fixed.
Further, in the present invention, in order to prevent the inner surface of the tapered radome 100 from being damaged when the tapered radome 100 is positioned, the tapered brace ring 12 may be configured to include a first layer and a second layer, the second layer is disposed on an outer layer of the first layer, the first layer is made of a metal material, and the second layer is made of a nylon material.
By applying the configuration mode, the first layer of the conical support ring 12 is tightly matched with the support rod 11 and can freely slide along the support rod 11, the second layer of the conical support ring 12 is tightly matched with the inner surface of the conical antenna housing, the first layer of the conical support ring 12 is made of a metal material, and the second layer of the conical support ring 12 is made of a nylon material, so that the damage to the inner surface of the conical antenna housing can be reduced to the maximum extent on the premise of ensuring certain structural strength of the conical support ring 12. Wherein, the appearance of the second layer of toper chaplet ring 12 is unanimous with the internal surface of toper antenna house 100, can make the internal surface of toper chaplet ring 12 and toper antenna house closely cooperate through elastic component 14, guarantees that the first end of toper antenna house 100 is automatic to be in the alignment state.
Further, in the present invention, in order to achieve firm fixing of the conical radome, the adjusting and fixing portion 30 may be configured in a plurality, the second positioning portion 20 is a flange, the plurality of adjusting and fixing portions 30 are disposed at a periphery of the flange at regular intervals, and the plurality of adjusting and fixing portions 30 are used for fixedly clamping the second end of the conical radome.
Specifically, as an embodiment of the present invention, the adjusting fixing portion 30 may be configured to include a connecting bent plate 31, an adjusting screw 32 and an arc-shaped pressing block 33, the connecting bent plate 31 is disposed on the flange, a first end of the adjusting screw 32 is in threaded connection with the connecting bent plate 31, and the arc-shaped pressing block 33 is movably connected with a second end of the adjusting screw 32.
By applying the configuration mode, the arc-shaped pressing block 33 is movably connected with the second end of the adjusting screw rod 32, so that the arc-shaped pressing block 33 can be freely adjusted to be matched with the outer surface of the conical antenna housing in a phase-changing manner, the axial force perpendicular to the conical antenna housing is converted into the normal force of the outer shape inclined plane, the second end of the conical antenna housing can be positioned and clamped, and the configuration mode is simple and convenient and can effectively fix the conical antenna housing.
In the present invention, in order to realize the free phase-change adjustment of the arc-shaped pressing block, the adjusting screw 32 may be configured to include a connecting sphere 321, the connecting sphere 321 is disposed at the second end of the adjusting screw 32, the arc-shaped pressing block 33 includes a spherical recess 331, and the connecting sphere 321 and the spherical recess 331 cooperate to realize the movable connection between the arc-shaped pressing block 33 and the adjusting screw 32.
Specifically, as shown in fig. 3, the adjusting and fixing portion 30 further includes a connecting pressing plate 34, a countersunk screw 35 and a connecting screw 36, when the adjusting and fixing portion 30 is assembled, the connecting bent plate 31 can be fixed on the flange plate through the countersunk screw 35, the first end of the adjusting screw 32 is in threaded connection with the connecting bent plate 31, the connecting ball 321 of the adjusting screw 32 is matched with the spherical groove 331 of the arc-shaped pressing block 33, and the adjusting screw 32 is fixedly connected with the arc-shaped pressing block 33 through the connecting pressing plate 34 and the connecting screw 36. Wherein, when using to adjust fixed part 30 and carry out the fixed of toper antenna house surface, adjustable adjusting screw 32 is in order to drive the radial surface of adjusting, alignment, the tight second end department of pressing from both sides the toper antenna house of arc briquetting 33, and the accessible is in the position of the first end department installation fixation nut of adjusting screw 32 with fixed arc briquetting 33 after pressing from both sides tightly to make things convenient for the processing of follow-up surface to the toper antenna house.
Further, in order to prevent the adjustment fixing portion 30 from damaging the tapered radome when fixing the outer surface of the tapered radome, a silicone rubber gasket may be provided on the arc-shaped pressing block.
For further understanding of the present invention, the specific operation of the positioning and clamping device for the machining process of the outer surface of the conical radome of the present invention will be described in detail with reference to fig. 1 and 3.
The positioning and clamping device can be used for performing rough machining and finish machining processes on the outer surface of the conical antenna housing, wherein the machining machine tool for the outer surface of the conical antenna housing is a numerical control lathe with a numerical control grinding power device. When the conical antenna housing needs to be positioned and clamped for the machining process of the outer surface of the conical antenna housing, the first end of the support rod 11 is firstly installed in a spindle hole of a numerical control lathe, the taper angle of the first end of the support rod 11 is tightly matched with the taper angle of the spindle hole of the numerical control lathe, the support rod 11 penetrates through the spindle hole of the numerical control lathe through the pull rod 20 to be tensioned, the support rod 11 is aligned by sensing the tightness, and the integral circular runout of the support rod 11 is smaller than 0.03 mm.
And then clamping the flange plate on a numerical control lathe through a four-jaw chuck, wherein in the embodiment, the number of the adjusting and fixing parts 30 is eight, the eight adjusting and fixing parts 30 are uniformly arranged on the periphery of the flange plate at intervals, and the flange plate is aligned to ensure that the flatness of the flange plate is less than 0.1 mm.
Then, the baffle ring 13 is installed at the second end of the support rod 11 through threaded connection, and then the elastic member 14 and the tapered support ring 12 are installed in sequence, so as to ensure that the circular run-out of the tapered support ring 12 is less than 0.05 mm. As shown in fig. 3, a spring may be used as the elastic member 14. The clamping diameters of the eight adjustment fixing portions 30 are adjusted to be slightly larger than the outer diameter of the second end of the tapered radome 100, and the tapered radome 100 is clamped to the support rod 11 from the second end in the direction of the main axis of the numerically controlled lathe as much as possible. Wherein, the installation position of the retainer ring 13 is adjusted to ensure that the compression elastic member 14 provides a certain axial supporting force to the tapered support ring 12, so that the tapered support ring 12 is tightly matched with the inner surface of the tapered radome 100.
Finally, the second end of the conical radome 100 is radially adjusted, aligned and clamped through the eight adjusting and fixing parts 30, alignment is performed through a reference prefabricated on the outer surface of the second end of the conical radome 100, the circle run-out required by alignment of the conical radome 100 in the rough machining process is less than 0.1mm, and the circle run-out required by alignment of the conical radome in the finish machining process is less than 0.05 mm.
According to another aspect of the present invention, there is provided a positioning and clamping device for an inner surface machining process of a tapered radome, as shown in fig. 2, the first positioning portion 10 of the positioning and clamping device includes a tapered positioning block 11 ', the tapered positioning block 11 ' includes a tapered inner hole 111 ', an outer surface of the tapered positioning block 11 ' is attached to a spindle hole of a machining tool, and the tapered inner hole 111 ' is attached to an outer surface at a first end of the tapered radome. Wherein, the inner hole surface of the conical inner hole 111' is consistent with the outer surface of the first end of the conical antenna housing in shape, so as to ensure that the inner hole surface is coaxial with the outer surface.
Further, the structure and composition of the adjusting and fixing part 30 of the positioning and clamping device for the tapered radome inner surface machining process are the same as those of the adjusting and fixing part 30 of the positioning and clamping device for the tapered radome outer surface machining process. Specifically, in order to realize radial adjustment, location and the clamp of toper antenna house 100, a clamping device for location of toper antenna house internal surface manufacturing process still includes support frame 40, and regulation fixed part 30 is a plurality of, and a plurality of regulation fixed parts 30 can be divided into first group regulation fixed part and second group regulation fixed part, and first group regulation fixed part and second group regulation fixed part set up on support frame 40 along the axis direction interval of toper antenna house, and a plurality of regulation fixed parts 30 are used for the fixed clamp toper antenna house.
By applying the configuration mode, the first group of adjusting fixing parts and the second group of adjusting fixing parts are arranged at intervals along the axial direction of the conical antenna housing, so that the conical antenna housing can be positioned and clamped at a plurality of directions in the axial direction. The first group of adjusting fixing parts comprise a plurality of adjusting fixing parts arranged along the periphery of the radial direction of the conical antenna housing at intervals, the second group of adjusting fixing parts also comprise a plurality of adjusting fixing parts arranged along the periphery of the radial direction of the conical antenna housing at intervals, and under the configuration mode, the axial direction and the radial direction of the conical antenna housing can be clamped and fixed in a plurality of directions, so that the subsequent processing of the inner surface of the conical antenna housing is facilitated.
Specifically, as an embodiment of the present invention, as shown in fig. 2, the adjusting fixing portion 30 of the positioning and clamping device for the tapered radome inner surface machining process includes a connecting bending plate 31, an adjusting screw 32 and an arc pressing block 33, the connecting bending plate 31 is disposed on the support frame 40, a first end of the adjusting screw 32 is in threaded connection with the connecting bending plate 31, and the arc pressing block 33 is movably connected with a second end of the adjusting screw 32. The adjusting screw 32 comprises a connecting sphere 321, the connecting sphere 321 is disposed at the second end of the adjusting screw 32, the arc pressing block 33 comprises a spherical groove 331, and the connecting sphere 321 and the spherical groove 331 are matched to realize the movable connection between the arc pressing block 33 and the adjusting screw 32.
The adjusting fixing portion 30 further comprises a connecting pressing plate 34, a countersunk screw 35 and a connecting screw 36, when the adjusting fixing portion 30 is assembled, the connecting bent plate 31 can be fixed on the support frame 40 through the countersunk screw 35, the first end of the adjusting screw 32 is in threaded connection with the connecting bent plate 31, the connecting ball 321 of the adjusting screw 32 is matched with the spherical groove 331 of the arc-shaped pressing block 33, and the adjusting screw 32 is fixedly connected with the arc-shaped pressing block 33 through the connecting pressing plate 34 and the connecting screw 36. Wherein, when using to adjust fixed part 30 and carry out the fixed of toper antenna house surface, adjustable adjusting screw 32 is in order to drive the radial regulation of arc briquetting 33, alignment, press from both sides the surface of tight toper antenna house, and the accessible is in the position of fixed arc briquetting 33 of the first end department installation fixation nut of adjusting screw 32 after pressing from both sides tightly to make things convenient for the subsequent processing to the internal surface of toper antenna house. Specifically, as an embodiment of the present invention, an outer circular sleeve may be selected as the support frame 40.
Further, in the present invention, in order to restrict the movement of the conical radome in the axial direction, the second positioning portion 20 may be configured to include a baffle plate provided on the support frame 40, the baffle plate being attached to an end surface at the second end of the conical radome to restrict the movement of the conical radome in the axial direction.
Specifically, in order to achieve the fixed connection of the baffle plate and the support frame 40, as shown in fig. 2, the baffle plate may be configured to be fixedly connected to the end portion of the support frame 40 through a screw or a nut, and the second end of the conical radome may be pressed by the baffle plate to axially compress the conical radome. Here, in order to avoid machining the inner surface of the conical antenna housing, the fitting length of the baffle plate and the second end of the conical antenna housing should be set so as not to affect the operation of the tool for machining the inner surface of the conical antenna housing.
For further understanding of the present invention, the following describes the detailed operation of the positioning and clamping device for the inner surface machining process of the conical radome according to the present invention with reference to fig. 2 and 3.
The positioning and clamping device can be used for performing rough machining and finish machining processes of the inner surface of the conical antenna housing, external reference prefabrication and other machining processes, wherein the machining machine tool for the outer surface of the conical antenna housing is a numerical control lathe with a numerical control grinding power device, and the supporting frame 40 is an outer cylindrical sleeve. When the inner surface of the conical antenna housing needs to be clamped and positioned, the conical positioning block 11 ' is firstly plugged into a spindle hole of a numerical control lathe, the conical positioning block 11 ' and the spindle hole are in close fit with the same taper angle, and a dial indicator is used for detecting that the inner hole circular run-out of the conical positioning block 11 ' is less than 0.03 mm.
Then, a first group of adjusting fixing parts with four adjusting fixing parts 30 and a second group of adjusting fixing parts with eight adjusting fixing parts 30 are circumferentially and uniformly arranged on the outer circle sleeve, the outer circle sleeve is clamped on a numerical control lathe through a four-jaw chuck, the outer circle runout is smaller than 0.10mm, and the first group of adjusting fixing parts and the second group of adjusting fixing parts are rotationally adjusted to proper outer diameters.
Then, the conical antenna housing 100 is slowly fed into the outer cylindrical sleeve from the first end to the second end along the axial direction of the machine tool by the feeding mechanism, so that the outer surface of the first end of the conical antenna housing 100 is tightly matched with the conical inner hole 111 'of the conical positioning block 11'. Adjust the second end that fixed part radial adjustment, alignment, the tight toper antenna house 100 of clamp through the second group, screw up first group again and adjust the fixed part in order to support the middle suspension section of toper antenna house 100, hold surface, internal surface through toper antenna house 100 second and carry out toper antenna house alignment, the rough machining process alignment of toper antenna house 100 requires the circle to beat and is less than 0.1mm, and finish machining process alignment requires the circle to beat and is less than 0.05 mm. Wherein, the contact position of the arc-shaped pressing block of the adjusting fixing part and the outer surface of the conical antenna housing is provided with a silicon rubber gasket.
And finally, the two baffles arranged on the end surface of the outer circular sleeve are attached to the end surface of the second end of the conical antenna housing to limit the movement of the conical antenna housing 100 along the axial direction.
In addition, as another embodiment of the present invention, the positioning and clamping device for a tapered radome of the present invention may be used for a radome large end margin cutting process. A positioning and clamping device that is used for antenna house main aspects surplus excision manufacturing procedure to use is similar with the positioning and clamping device that is used for antenna house internal surface manufacturing procedure to use, only needs to get rid of second location portion and can be used to the manufacturing procedure that the antenna house main aspects surplus was excised.
In summary, the positioning and clamping device for the conical radome provided by the invention is of a mechanical integral structure, the first end of the conical radome can be automatically centered by matching with a spindle hole of a numerical control lathe, then the adjusting screw is connected with the arc-shaped pressing block, the arc-shaped pressing block gradually approaches to the outer surface of the conical radome along with the rotation of the adjusting screw, when the arc-shaped pressing block contacts with the outer surface of the radome, the plane direction is kept static, but the adjusting screw can still continue to rotatably adjust and press the arc-shaped pressing block to fix the conical radome, the inclination force of the adjusting screw is skillfully converted into the normal force of the outer surface of the conical radome, and the second end of the conical radome can be tightly fixed. In the mode, the roundness directions of the two ends are aligned, so that the axis of the conical antenna housing is consistent with the central line of the numerical control lathe, and the wall thickness and the coaxiality of the processed conical antenna housing can meet the technical index requirements.
When the positioning and clamping device is used for processing the quartz wave-transparent ceramic radome, the whole processing cycle involves four processes of clamping conversion, namely rough and fine processing of the outer surface, rough and fine processing of the inner surface, the clamping mode of the positioning and clamping device is not influenced by the changes of the shape size and the surface form of the conical radome, the positioning and clamping device can be used for the whole processing process of the conical radome, not only can rough processing of rough conical radome blanks be carried out, but also can finish processing of the conical radome with a smooth and clean surface, and the processing technological references in the length direction and the diameter direction can be conveniently set. The clamping mode can be used for machining conical antenna housings with different sizes by changing the size of the tool.
In addition, the positioning and clamping device is completely realized through a mechanical structure, the structural form is simple, the technical problem that the high-permeability quartz ceramic radome is difficult to clamp and position in a vacuum adsorption mode in the prior art is solved, the operation is convenient, the device is stable and reliable, the device is more suitable for actual production, all process conversion clamping can effectively control the coaxiality of the inner surface and the outer surface by controlling circle run-out alignment, so that the purpose of controlling the wall thickness precision of the wave-transparent area is achieved, and the final processing quality of the conical radome is ensured.
Features that are described and/or illustrated above with respect to one embodiment may be used in the same way or in a similar way in one or more other embodiments and/or in combination with or instead of the features of the other embodiments.
It should be emphasized that the term "comprises/comprising" when used herein, is taken to specify the presence of stated features, integers, steps or components but does not preclude the presence or addition of one or more other features, integers, steps, components or groups thereof.
The many features and advantages of these embodiments are apparent from the detailed specification, and thus, it is intended by the appended claims to cover all such features and advantages of these embodiments which fall within the true spirit and scope thereof. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the embodiments of the invention to the exact construction and operation illustrated and described, and accordingly, all suitable modifications and equivalents may be resorted to, falling within the scope thereof.
The invention has not been described in detail and is in part known to those of skill in the art.
Claims (8)
1. A clamp down assembly for a tapered radome, the tapered radome having a first end and a second end, the first end of the tapered radome having a diameter less than a diameter of the second end, the clamp down assembly comprising:
a first positioning portion (10), the first positioning portion (10) being attached to an inner or outer surface of the conical radome at a first end thereof, the first positioning portion (10) being configured to restrict movement of the conical radome in a radial direction and an axial direction;
a second positioning portion (20), the second positioning portion (20) being attached to an end face of the conical radome at a second end, the second positioning portion (20) being used for limiting movement of the conical radome in an axial direction;
the adjusting fixing part (30) is attached to the outer surface of the conical antenna housing, and the adjusting fixing part (30) is used for fixedly clamping the conical antenna housing;
the positioning and clamping device is used for the outer surface machining process of the conical antenna housing, and the first positioning part (10) comprises:
the support rod (11), the support rod (11) has the first end and the second end, the first end of the support rod (11) is matched with a spindle hole of a processing machine tool;
the cone-shaped supporting ring (12), the cone-shaped supporting ring (12) is arranged at the second end of the supporting rod (11), the cone-shaped supporting ring (12) is attached to the inner surface of the first end of the cone-shaped radome, the first positioning portion (10) further comprises a blocking ring (13) and an elastic piece (14), the blocking ring (13) and the elastic piece (14) are both arranged at the second end of the supporting rod (11), the blocking ring (13) is in threaded connection with the supporting rod (11), the elastic piece (14) is arranged between the blocking ring (13) and the cone-shaped supporting ring (12), and the cone-shaped supporting ring (12) is movably arranged at the second end of the supporting rod (11);
or the positioning and clamping device is used for the inner surface machining process of the conical antenna housing, the first positioning part (10) comprises a conical positioning block (11 '), the conical positioning block (11 ') comprises a conical inner hole (111 '), the outer surface of the conical positioning block (11 ') is matched with a spindle hole of a machining tool, and the conical inner hole (111 ') is attached to the outer surface of the first end of the conical antenna housing.
2. The positioning and clamping device for the tapered radome of claim 1, wherein the tapered supporting ring (12) comprises a first layer and a second layer, the second layer is arranged on the outer layer of the first layer, the first layer is made of a metal material, and the second layer is made of a nylon material.
3. The positioning and clamping device for the tapered radome of claim 1, wherein the adjusting and fixing portion (30) is a plurality of, the second positioning portion (20) is a flange, the adjusting and fixing portions (30) are evenly spaced at the periphery of the flange, and the adjusting and fixing portions (30) are used for fixedly clamping the second end of the tapered radome.
4. The positioning and clamping device for the tapered radome of claim 1, further comprising a supporting frame (40), wherein the adjusting and fixing portions (30) are plural, the adjusting and fixing portions (30) are divided into a first group of adjusting and fixing portions and a second group of adjusting and fixing portions, the first group of adjusting and fixing portions and the second group of adjusting and fixing portions are arranged on the supporting frame (40) at intervals along an axial direction of the tapered radome, and the plurality of adjusting and fixing portions (30) are used for fixedly clamping the tapered radome.
5. The locating clip for a tapered radome of claim 4, wherein the second locating portion (20) comprises a baffle provided on the support frame (40) that abuts an end face at the second end of the tapered radome to limit movement of the tapered radome in the axial direction.
6. The positioning and clamping device for the tapered radome of claim 3, wherein the adjusting fixing portion (30) comprises a connecting bent plate (31), an adjusting screw rod (32) and an arc-shaped pressing block (33), the connecting bent plate (31) is arranged on the flange, a first end of the adjusting screw rod (32) is in threaded connection with the connecting bent plate (31), and the arc-shaped pressing block (33) is movably connected with a second end of the adjusting screw rod (32).
7. The positioning and clamping device for the conical radome of claim 4, wherein the adjusting and fixing part (30) comprises a connecting bent plate (31), an adjusting screw rod (32) and an arc-shaped pressing block (33), the connecting bent plate (31) is arranged on the supporting frame (40), a first end of the adjusting screw rod (32) is in threaded connection with the connecting bent plate (31), and the arc-shaped pressing block (33) is movably connected with a second end of the adjusting screw rod (32).
8. The positioning and clamping device for a tapered radome of claim 6 or 7, wherein the adjusting screw (32) comprises a connecting sphere (321), the connecting sphere (321) is disposed at the second end of the adjusting screw (32), the arc-shaped pressing block (33) comprises a spherical groove (331), and the connecting sphere (321) and the spherical groove (331) are matched to realize movable connection of the arc-shaped pressing block (33) and the adjusting screw (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710971091.7A CN109676545B (en) | 2017-10-18 | 2017-10-18 | Positioning and clamping device for conical antenna housing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710971091.7A CN109676545B (en) | 2017-10-18 | 2017-10-18 | Positioning and clamping device for conical antenna housing |
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| Publication Number | Publication Date |
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| CN109676545A CN109676545A (en) | 2019-04-26 |
| CN109676545B true CN109676545B (en) | 2021-10-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710971091.7A Active CN109676545B (en) | 2017-10-18 | 2017-10-18 | Positioning and clamping device for conical antenna housing |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110293491B (en) * | 2019-06-25 | 2021-07-06 | 湖北三江航天江北机械工程有限公司 | Static-fixed bonding tool and method for ceramic-based composite cover body and metal embedded ring |
| CN110871369B (en) * | 2019-11-29 | 2021-05-25 | 航天特种材料及工艺技术研究所 | Positioning device and machining method for thin-wall special-shaped ceramic radome |
| CN111283577B (en) * | 2020-03-10 | 2021-10-29 | 航天智造（上海）科技有限责任公司 | Clamping test tool for large conical cylindrical part |
| CN112975404B (en) * | 2021-02-08 | 2022-07-29 | 航天材料及工艺研究所 | Device and method for machining semi-conical wave-transparent radome |
| CN113523850B (en) * | 2021-07-13 | 2022-07-05 | 大连理工大学 | Clamp and clamping method for non-revolving body conical part |
| CN114054813B (en) * | 2021-11-01 | 2023-02-03 | 航天材料及工艺研究所 | Machining method for large-size thin-wall special-shaped cover body |
| CN114749969B (en) * | 2022-03-18 | 2023-06-02 | 大连理工大学 | Conical thin-wall part tool and positioning method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2915824B2 (en) * | 1995-06-09 | 1999-07-05 | 日本アンテナ株式会社 | Car antenna |
| CN2413264Y (en) * | 1999-06-22 | 2001-01-03 | 大连理工大学 | Geometrical accuracy measuring device for guided missile antenna housing |
| CN104858685B (en) * | 2015-05-30 | 2017-01-18 | 久亿航宇科技（大连）有限公司 | Conical radome machining and fixing fixture |
| CN104942659B (en) * | 2015-07-11 | 2017-03-08 | 大连理工大学 | A kind of processing unit (plant) of ceramic matric composite antenna house inwall blind hole and its processing method |
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