CN113751731A - Inner-type turning process for bottom of rocket tank - Google Patents
Inner-type turning process for bottom of rocket tank Download PDFInfo
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- CN113751731A CN113751731A CN202111009550.6A CN202111009550A CN113751731A CN 113751731 A CN113751731 A CN 113751731A CN 202111009550 A CN202111009550 A CN 202111009550A CN 113751731 A CN113751731 A CN 113751731A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B1/00—Methods for turning or working essentially requiring the use of turning-machines; Use of auxiliary equipment in connection with such methods
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B5/00—Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor
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Abstract
The invention provides an internal turning process for the bottom of a rocket tank, which comprises the following steps: placing the big end port of the box bottom on a vertical lathe chuck in an upward mode; fixedly connecting the box bottom with a vertical lathe chuck by using a port supporting device; adjusting the height of the port supporting device to enable the circular rings of the bottom port of the box to be at the same height; turning the inner profile of the box bottom. The port supporting device is used for supporting the port of the box bottom, so that the influence of clamping stress on the turning process effect of the inner shape of the box bottom is reduced.
Description
Technical Field
The invention relates to the field of processing of carrier rocket storage tanks, in particular to an internal turning process for the tank bottom of a rocket storage tank.
Background
The bottom of the carrier rocket tank is a large-diameter thin-wall ellipsoidal shell, and the material of the bottom is generally an aluminum alloy plate which can be strengthened by thermal treatment. For example, Chinese patent CN110640019A discloses an integral forming method for a large-diameter storage box bottom with a hole flanging structure, and a box bottom circular ring is obtained by adopting an integral forming mode of an aluminum alloy plate. However, the integrally formed blank cannot be directly applied to welding of the bottom of the storage box of the carrier rocket due to the limitations of technology, equipment, process and the like, and the inner and outer surfaces must be machined.
According to the technical process, the machining of the whole circular ring mainly comprises three procedures of inner shape, outer shape and circular hole. The processing of the inner mold as the first process mainly has two problems of large roundness deformation and weak thin-wall rigidity. The whole circular ring is subjected to internal stress accumulation after the technological processes of spinning or hydraulic forming, heat treatment strengthening and the like, is released in the natural aging process, and the irregular deformation of the product is large. In addition, in the processes of clamping, machining and hoisting of the ring, if a forced constraint mode is adopted, external deformation is easily introduced, the roundness deformation of a product is further increased, and the difficulty of subsequent appearance turning is increased.
In order to reduce the influence of clamping stress on the box bottom inner-type turning process effect, the design of the inner-type turning process of the rocket tank bottom is particularly important.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides an internal turning process for the bottom of a rocket tank.
The invention provides an internal turning process for the bottom of a rocket tank, which comprises the following steps: placing the big end port of the box bottom on a vertical lathe chuck in an upward mode; fixedly connecting the box bottom with a vertical lathe chuck by using a port supporting device; adjusting the height of the port supporting device to enable the circular rings of the bottom port of the box to be at the same height; turning the inner profile of the box bottom.
According to one embodiment of the invention, said turning of the internal profile of the bottom of the tank comprises before: the center of the box bottom is fixedly connected with the flower disc of the vertical lathe by using a center connecting device.
According to one embodiment of the invention, said turning of the internal profile of the bottom of the tank comprises before: the bottom surface of the tank is supported using a bottom support.
According to one embodiment of the invention, said turning of the internal profile of the bottom of the tank comprises before: the height of the port supporting device is repeatedly adjusted to enable the circular rings of the ports at the bottom of the box to be at the same height.
According to one embodiment of the invention, the port supporting device comprises a supporting rod and a pressing plate, wherein the upper end of the supporting rod penetrates through the pressing plate; before using port strutting arrangement with bottom of the case and vertical lathe flower disc fixed connection include: the method comprises the following steps that a first sliding block is arranged on a vertical lathe chuck, and the first sliding block can move along the radial direction of the vertical lathe chuck; connecting the lower end of the supporting rod with the first sliding block; and moving the first sliding block to drive the supporting rod to move along the radial direction of the vertical lathe chuck so as to adaptively connect the pressing plate with the outer edge of the bottom port of the box.
According to one embodiment of the invention, said adjusting the height of the port support means so that the tank bottom port rings are at the same height comprises: a first nut and a second nut which are respectively arranged on the upper end surface and the lower end surface of the pressure plate are unscrewed; adjusting the height of the pressure plate; when the circular rings at the bottom port of the box are at the same height, the first nut and the second nut are screwed tightly, and the pressing plate and the supporting rod are fixed.
According to one embodiment of the invention, the port support device comprises a first screw and a second screw, the first screw and the second screw being adjustable in length; the first screw, the support rod and the second screw are sequentially arranged from the center of the vertical lathe chuck to the outside along the same radial direction of the vertical lathe chuck; still include before will treating the bottom of the case of turning inner profile and the fixed connection of vertical lathe chuck through port strutting arrangement: a second sliding block and a third sliding block are arranged on the vertical lathe chuck, and the second sliding block and the third sliding block can move along the radial direction of the vertical lathe chuck; connecting the lower ends of the first screw rod and the second screw rod with the second sliding block and the third sliding block; moving the second slide block and the third slide block to respectively drive the first screw rod and the second screw rod to move along the radial direction of the vertical lathe chuck so as to adaptively connect the pressure plate with the outer edge of the bottom port of the box; the height of port strutting arrangement is adjusted, makes bottom of the case port department include at same height: loosening a third nut arranged on the upper end surface of the pressing plate, and adjusting the height of the pressing plate to enable the circular rings at the bottom port of the box to be at the same height; adjusting the lengths of the first screw and the second screw to enable the upper ends of the first screw and the second screw to contact the lower end surface of the pressing plate and support the pressing plate; and screwing the third nut to fix the support rod, the first screw rod, the second screw rod and the pressing plate.
According to one embodiment of the invention, the fixedly connecting the bottom center of the box with the flower disc of the vertical lathe by using the center connecting device comprises: a lower cushion block is arranged between the center of the box bottom and the flower disc of the vertical lathe; an upper pressing block is arranged at the upper end of the center of the box bottom; and a connecting piece using the central connecting device sequentially penetrates through the vertical lathe chuck, the lower cushion block, the bottom center of the box and the upper pressing block and is fixed by a fourth nut.
According to one embodiment of the invention, before the step of placing the big end port of the box bottom on the flower disc of the vertical lathe upwards, the method comprises the following steps: a reference reticle perpendicular to the central axis of the box bottom is arranged on the bottom surface of the box bottom; adjusting the height of the port supporting device to enable the bottom port ring to be at the same height comprises: and aligning the circular reference reticle on the bottom surface of the box.
According to one embodiment of the invention, the supporting the tank floor with the bottom support comprises: and processing the upper side surface of the bottom support into an arc shape so as to enable the upper side surface of the bottom support to be attached to the bottom surface of the box.
According to the internal turning process of the rocket tank bottom, disclosed by the embodiment of the invention, the clamping tank bottom circular ring is slightly forced to deform by adopting the flexible simple tool, so that the clamping stress is reduced, and the influence of the clamping stress on the internal turning process effect of the tank bottom is reduced. In addition, the internal turning process of the rocket tank bottom provided by the invention adopts a combined tool design idea, is simple, convenient and quick, and is easy to adjust. The process has strong adaptability, and can be used for turning the box bottom circular rings with different wall thicknesses and different deformation states.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description, serve to explain the principles of the invention.
FIGS. 1-12 are flow charts of a process for turning the inside shape of the bottom of a rocket tank case according to an embodiment of the present invention;
FIG. 13 is a perspective view of an internal lathe turning table of the rocket tank bottom of one embodiment of the present invention;
FIG. 14 is a top view of an internal lathe turning table of the rocket tank bottom of one embodiment of the present invention;
FIG. 15 is a sectional view A-A of FIG. 14;
FIG. 16 is an enlarged view of B in FIG. 15;
FIG. 17 is a cross-sectional view A-A of an internal lathe turning table of the rocket tank bottom of one embodiment of the present invention;
fig. 18 is an enlarged view of C in fig. 17.
Description of reference numerals:
1-vertical lathe pattern disc, 2-support component, 3-support rod, 4-press plate, 5-first slide block, 6-linear guide rail, 7-outer edge of bottom port of box, 8-central connecting piece, 9-first nut, 10-second nut, 11-first screw, 12-second screw, 13-second slide block, 14-third slide block, 15-third nut, 16-bottom support, 17-fourth slide block, 18-upper press block, 19-lower cushion block, 20-connecting piece, 21-bolt, 22-fourth nut and 23-flanging.
Detailed Description
Features and exemplary embodiments of various aspects of the present invention will be described in detail below, and in order to make objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention, for the purposes of illustrating the principles of the invention. Additionally, the components in the drawings are not necessarily to scale. For example, the dimensions of some of the elements or regions in the figures may be exaggerated relative to other elements or regions to help improve understanding of embodiments of the present invention.
The directional terms used in the following description are used in the illustrated directions, and do not limit the specific configurations of the embodiments of the present invention. In the description of the present invention, it should be noted that, unless otherwise specified, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood as appropriate to those of ordinary skill in the art.
Furthermore, the terms "comprises," "comprising," "includes," "including," "has," "having" or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a structure or component comprising a list of elements does not include only those elements but may include other mechanical components not expressly listed or inherent to such structure or component. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of additional like elements in the article or device comprising the element.
Spatially relative terms such as "below," "… below," "lower," "above," "… above," "upper," and the like are used for convenience in describing the positioning of one element relative to a second element and are intended to encompass different orientations of the device in addition to different orientations than those illustrated in the figures. Further, for example, the phrase "one element is over/under another element" may mean that the two elements are in direct contact, or that there is another element between the two elements. Furthermore, terms such as "first", "second", and the like, are also used to describe various elements, regions, sections, etc. and should not be taken as limiting. Like terms refer to like elements throughout the description.
In describing the present invention below, it is possible to use only "rockets", "launch vehicles" or "missiles" in a scenario description, which is for convenience of description only and the meaning is not limited to the specific words used. In general, the rockets of the invention may include launch vehicles, missiles, space vehicles, and similar products capable of launching a payload into the air. Those skilled in the art, in interpreting the above specific terms, should not be construed as limiting the rocket to only one of a launch vehicle or a missile, depending on the specific terms used in describing the scenario, thereby narrowing the scope of the present invention.
It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention.
FIGS. 1-12 are flow charts of a process for turning the inside shape of the bottom of a rocket tank case according to an embodiment of the present invention;
FIG. 13 is a perspective view of an internal lathe turning table of the rocket tank bottom of one embodiment of the present invention; FIG. 14 is a top view of an internal lathe turning table of the rocket tank bottom of one embodiment of the present invention; FIG. 15 is a sectional view A-A of FIG. 14; FIG. 16 is an enlarged view of B in FIG. 15; FIG. 17 is a cross-sectional view A-A of an internal lathe turning table of the rocket tank bottom of one embodiment of the present invention; fig. 18 is an enlarged view of C in fig. 17.
As shown in figures 1 and 13, the invention provides a technology for turning the inner shape of the bottom of a rocket tank, which is characterized by comprising the following steps:
s100, placing a large-end port of a box bottom on a flower disc of a vertical lathe upwards;
s200, fixedly connecting a box bottom and a vertical lathe chuck by using a port supporting device;
s300, adjusting the height of the port supporting device to enable the circular rings of the box bottom ports to be at the same height;
s400, turning the inner profile of the box bottom.
Specifically, the bottom of the carrier rocket tank is a large-diameter thin-wall ellipsoidal shell, and the material of the bottom is generally an aluminum alloy plate which can be strengthened by thermal treatment. The integrally formed blank cannot be directly applied to welding of the bottom of the storage box of the carrier rocket due to the limitations of technology, equipment, process and the like, and the inner and outer surfaces must be machined.
According to the technical process, the machining of the whole circular ring mainly comprises three procedures of inner shape, outer shape and circular hole. The processing of the inner mold as the first process mainly has two problems of large roundness deformation and weak thin-wall rigidity. The whole circular ring is subjected to internal stress accumulation after the technological processes of spinning or hydraulic forming, heat treatment strengthening and the like, is released in the natural aging process, and the irregular deformation of the product is large. In addition, in the processes of clamping, machining and hoisting of the ring, if a forced constraint mode is adopted, external deformation is easily introduced, the roundness deformation of a product is further increased, and the difficulty of subsequent appearance turning is increased.
The port supporting device is used for supporting the box bottom port in the internal turning process provided by the embodiment, so that the influence of clamping stress on the effect of the box bottom internal turning process is reduced.
In the embodiment, the inner turning process of the rocket tank bottom fixes the tank bottom on the workbench, and the port supporting device is used for supporting the port of the tank bottom, so that the clamping stress is reduced, the influence of the clamping stress on the inner turning process effect of the tank bottom is reduced, and the turning quality consistency is improved. The inner-type turning process provided by the embodiment supports the box bottom port, and can prevent the box bottom port from deforming during inner-type turning. In addition, the inner turning process adopts a combined tool design idea, is simple, convenient and quick, is easy to adjust and has strong adaptability.
As shown in fig. 2 and 15, according to one embodiment of the invention, turning the internal profile of the bottom of the tank before comprises:
s310, fixedly connecting the center of the box bottom with a flower disc of the vertical lathe by using a center connecting device.
Through using central connecting device 8 with bottom of the case and vertical lathe chuck 1 fixed connection, during the interior type turning technology of the bottom of the case, can make the bottom of the case fix on the workstation more steadily, prevent that the bottom from taking place the skew, reduced the bottom of the case and rocked the influence to the turning effect.
As shown in fig. 3 and 15, according to one embodiment of the invention, turning the internal profile of the bottom of the tank before comprises:
s320 supports the bottom surface of the tank using the bottom support.
The bottom support 16 is used for supporting the bottom surface of the box, so that the extrusion deformation of the outer wall of the circular ring caused by outward turning force in the process of inner turning can be reduced.
As shown in fig. 4, turning the internal profile of the bottom of the tank according to one embodiment of the invention comprises before:
s330, the height of the port supporting device is repeatedly adjusted, so that the circular rings of the bottom ports of the box are at the same height.
The circular rings at the port of the box bottom are positioned at the same height, so that the position and the precision of subsequent internal turning can be ensured.
As shown in fig. 5 and 15, according to an embodiment of the present invention, the port supporting device 2 includes a supporting rod 3 and a pressing plate 4, and an upper end of the supporting rod 3 penetrates the pressing plate 4. Use port strutting arrangement to include before with the fixed connection of vertical lathe flower disc bottom:
s110, arranging a first sliding block on the vertical lathe chuck, wherein the first sliding block can move along the radial direction of the vertical lathe chuck;
s120, connecting the lower end of the supporting rod with the first sliding block;
s130, the first sliding block is moved to drive the supporting rod to move along the radial direction of the vertical lathe chuck, and the pressing plate is connected with the outer edge of the box bottom port in an adaptive mode.
Specifically, the first sliding block 5 is moved along the radial direction of the chuck 1 of the vertical lathe to drive the supporting rod 3 and the pressing plate 4 to move towards the bottom of the case until the pressing plate 4 can be connected with the outer edge 7 of the bottom port of the case.
Further, in this embodiment, the vertical lathe chuck 1 is provided with a linear guide 6 along the radial direction of the vertical lathe chuck 1, and the first slider 5 drives the support rod 3 to move along the linear guide 6. The linear guide rail 6 is an inverted T-shaped groove formed in the chuck 1 of the vertical lathe, and correspondingly, the first sliding block 5 is an inverted T-shaped sliding block arranged in the groove.
In this embodiment, the linear guide rail may also be a T-shaped protrusion disposed on the vertical lathe chuck 1, and the corresponding first slider 5 is provided with a T-shaped groove matched with the linear guide rail 6.
The inner-type turning process provided by the embodiment adopts the clamping box bottom circular ring which is slightly forced to deform by the flexible simple tool, and reduces the influence of clamping stress on the box bottom inner-type turning process effect.
As shown in fig. 6, 15 and 16, according to one embodiment of the invention, adjusting the height of the port support device so that the bottom port rings are at the same height comprises:
s30010, unscrewing a first nut and a second nut which are respectively arranged on the upper end surface and the lower end surface of a pressure plate;
s30011, adjusting the height of the pressure plate;
s30012 when the circular ring of the bottom port of the box is at the same height, tightening the first nut and the second nut to fix the pressing plate and the supporting rod.
Specifically, the first nut 9 and the second nut 10 are unscrewed, the height of the pressure plate 4 is adjusted to enable the circular ring at the bottom port of the box to be at the same height, and then the first nut 9 and the second nut 10 are screwed down to fix the pressure plate 4 and the support rod 3. The circular rings at the port of the box bottom are positioned at the same height, so that the position and the precision of subsequent internal turning can be ensured.
As shown in fig. 17 and 18, according to an embodiment of the present invention, the port supporting device 2 includes a first screw 11 and a second screw 12, and the lengths of the first screw 11 and the second screw 12 are adjustable; the first screw 11, the support rod 3 and the second screw 12 are sequentially arranged from the center of the vertical lathe chuck to the outside along the same radial direction of the vertical lathe chuck. Still include before will treating the bottom of the case of turning inner profile and the fixed connection of vertical lathe chuck through port strutting arrangement:
s210, arranging a second sliding block and a third sliding block on the vertical lathe chuck, wherein the second sliding block and the third sliding block can move along the radial direction of the vertical lathe chuck;
s220, the lower ends of the first screw rod and the second screw rod are respectively connected with the second sliding block and the third sliding block;
s230, the positions of the second sliding block and the third sliding block are moved to respectively drive the first screw rod and the second screw rod to move along the radial direction of the vertical lathe chuck so as to adaptively connect the pressing plate with the outer edge of the bottom port of the box.
As shown in fig. 8, adjusting the height of the port supporting device to make the bottom port at the same height comprises:
s30020, loosening a third nut arranged on the upper end surface of the pressure plate, and adjusting the height of the pressure plate to enable the circular rings at the bottom port of the box to be at the same height;
s30021, adjusting the lengths of the first screw and the second screw to enable the upper ends of the first screw and the second screw to contact the lower end face of the pressing plate and support the pressing plate;
s30022 the third nut is screwed down to fix the support rod, the first screw rod, the second screw rod and the press plate.
Specifically, the first slide block 5, the second slide block 13 and the third slide block 14 are moved along the radial direction of the vertical lathe chuck 1 to drive the first screw rod 11, the support rod 3, the second screw rod 12 and the pressing plate 4 to move towards the bottom of the box until the pressing plate 4 can be connected with the outer edge 7 of the bottom port of the box. And loosening the third nut 15, adjusting the height of the pressing plate 4 to enable the circular ring at the bottom port of the box to be at the same height, adjusting the heights of the first screw rod 11 and the second screw rod 12 to enable the upper ends of the first screw rod 11 and the second screw rod 12 to be in contact with the lower end face of the pressing plate 4, and supporting the pressing plate 4. The third nut 15 is screwed down to fix the support rod 3, the first screw rod 11, the second screw rod 12 and the pressing plate 4. The first slider 5, the second slider 13 and the third slider 14 may be independent of each other, integrally formed or fixedly connected between adjacent sliders.
The port supporting device used in the inner mold turning process provided by the embodiment adopts a lever principle, and utilizes the supporting rod 3, the height-adjustable first screw 11, the height-adjustable second screw 12, the pressing plate 4, the third nut 15, the first slider 5, the second slider 13 and the third slider 14 to form a set of lever system, so that the subsequent inner mold turning is more stable, the port ring at the bottom of the box is at the same height, and the position and the precision of the subsequent inner mold turning can be ensured.
Take the case bottom with the outward flange arranged at the outer edge 7 of the case bottom port as an example. The port of the box bottom is welded with an outward flanging 23, so that the box bottom does not need to be punched. One side of the pressure plate 4 close to the box bottom is arranged at the upper end of the outward flanging 23, and the upper end of the first screw 11 is contacted with the lower end face of the outward flanging 23 to abut against the outward flanging 23. The upper end of the second screw 12 is in contact with the lower end face of the pressing plate 4 to abut against the pressing plate, and the third nut 15 is screwed, so that the supporting component 2 can support and fix the outward flanging 23, namely the bottom of the box. After the turning is finished, the outward flanging 23 welded at the port of the box bottom is cut off, so that the box bottom with the finished inner cutting can be obtained, and marks such as drilling holes and the like can not be left on the box bottom. By moving the position of the port support 2, it is possible to adapt to the bottom of tanks of different wall thicknesses and different deformation states. The problem of whole bottom of the case profile precision turning deformation is solved.
As shown in fig. 9, according to an embodiment of the present invention, the fixedly connecting the bottom center of the tank with the chuck of the vertical lathe using the center connection device comprises:
s3101, a lower cushion block is arranged between the center of the box bottom and a flower disc of the vertical lathe;
s3102, a pressing block is arranged at the upper end of the center of the box bottom;
s3103 the connecting piece of the central connecting device sequentially penetrates through the vertical lathe chuck, the lower cushion block, the bottom center of the box and the upper pressing block and is fixed by a fourth nut.
Specifically, before the turning of the inner shape of the box bottom, a through hole is prefabricated in the center of the box bottom in advance. Before the box bottom is placed on the vertical lathe chuck 1, a lower cushion block 19 is arranged on the vertical lathe chuck, the box bottom center is placed on the lower cushion block 19, an upper pressing block 18 is arranged at the upper end of the box bottom center, and finally the upper pressing block 18, the box bottom center and the vertical lathe chuck 1 are fixedly connected through a connecting piece 20. When the inner mold is turned, the upper pressing block 18 and the lower cushion block 19 can support the center of the box bottom, so that the box bottom is prevented from being extruded and deformed when the box bottom and the vertical lathe chuck 1 are fixed and the inner mold is turned.
According to one embodiment of the invention, the bottom of the tank is fixed using at least four port support devices 2 and a corresponding number of first slides 5. The port supporting devices 2 are respectively and uniformly arranged along the circumferential direction of the vertical lathe flower disc 1 through the first sliding blocks 5. According to the conditions of roundness deformation, size and the like of the box bottom, the number of the port supporting devices 2 can be increased, and the stability during inner shape turning is improved.
Further, at least 4 bottom supports 16 are used, so that the supporting force of the bottom supports 16 on the box bottom can be increased, and the stability during inner turning is improved. The bottom support 16 may be arranged in the same radial direction as the port support 2, providing a better support for the bottom of the tank.
As shown in fig. 10 and 11, according to an embodiment of the present invention, before placing the large-end port of the box bottom on the flower disc of the vertical lathe upwards, the method includes:
s110, arranging a reference reticle perpendicular to a central axis of the box bottom on the box bottom surface;
adjusting the height of the port supporting device to enable the bottom port ring to be at the same height comprises:
and S120, aligning the circular reference scribed line on the bottom surface of the box.
The bottom surface of the box is provided with a reference scale line vertical to the central axis of the box bottom, so that the box bottom can be better leveled.
As shown in fig. 12, the use of the bottom support to support the bottom surface of the tank, according to one embodiment of the present invention, previously comprises:
s321, processing the upper side surface of the bottom support into an arc shape so that the upper side surface of the bottom support is attached to the bottom surface of the box.
Specifically, the upper side surface of the bottom support 16 is adapted to the arc shape of the bottom surface of the box and is matched with the bottom surface of the box, so that the outward turning force in the inner turning process is prevented from extruding and deforming the outer wall of the circular ring.
The above-described embodiments of the present invention may be combined with each other with corresponding technical effects.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An internal turning process for the bottom of a rocket tank is characterized by comprising the following steps:
placing the big end port of the box bottom on a vertical lathe chuck in an upward mode;
fixedly connecting the box bottom with a vertical lathe chuck by using a port supporting device;
adjusting the height of the port supporting device to enable the circular rings of the bottom port of the box to be at the same height;
turning the inner profile of the box bottom.
2. The inside turning process according to claim 1, wherein the inside profile of the turned bottom before comprises: the center of the box bottom is fixedly connected with the flower disc of the vertical lathe by using a center connecting device.
3. The inside turning process according to claim 2, wherein the inside profile of the turned bottom before comprises: the bottom surface of the tank is supported using a bottom support.
4. The inside turning process according to claim 3, wherein the inside profile of the turned bottom before comprises: the height of the port supporting device is repeatedly adjusted to enable the circular rings of the ports at the bottom of the box to be at the same height.
5. The inside-type turning process according to any one of claims 1 to 4, wherein the port supporting device comprises a supporting rod and a pressing plate, and the upper end of the supporting rod penetrates through the pressing plate;
before using port strutting arrangement with bottom of the case and vertical lathe flower disc fixed connection include:
the method comprises the following steps that a first sliding block is arranged on a vertical lathe chuck, and the first sliding block can move along the radial direction of the vertical lathe chuck;
connecting the lower end of the supporting rod with the first sliding block;
and moving the first sliding block to drive the supporting rod to move along the radial direction of the vertical lathe chuck so as to adaptively connect the pressing plate with the outer edge of the bottom port of the box.
6. The inside turning process according to claim 5, wherein the adjusting the height of the port support to bring the bottom port ring at the same height comprises:
a first nut and a second nut which are respectively arranged on the upper end surface and the lower end surface of the pressure plate are unscrewed;
adjusting the height of the pressure plate;
when the circular rings at the bottom port of the box are at the same height, the first nut and the second nut are screwed tightly, and the pressing plate and the supporting rod are fixed.
7. The inside turning process according to claim 5, wherein the port support comprises a first screw and a second screw, the first screw and the second screw being adjustable in length; the first screw, the support rod and the second screw are sequentially arranged from the center of the vertical lathe chuck to the outside along the same radial direction of the vertical lathe chuck;
still include before will treating the bottom of the case of turning inner profile and the fixed connection of vertical lathe chuck through port strutting arrangement:
a second sliding block and a third sliding block are arranged on the vertical lathe chuck, and the second sliding block and the third sliding block can move along the radial direction of the vertical lathe chuck;
connecting the lower ends of the first screw rod and the second screw rod with the second sliding block and the third sliding block respectively;
moving the second slide block and the third slide block to respectively drive the first screw rod and the second screw rod to move along the radial direction of the vertical lathe chuck so as to adaptively connect the pressure plate with the outer edge of the bottom port of the box;
the height of port strutting arrangement is adjusted, makes bottom of the case port department include at same height:
loosening a third nut arranged on the upper end surface of the pressing plate, and adjusting the height of the pressing plate to enable the circular rings at the bottom port of the box to be at the same height;
adjusting the lengths of the first screw and the second screw to enable the upper ends of the first screw and the second screw to contact the lower end surface of the pressing plate and support the pressing plate;
and screwing the third nut to fix the support rod, the first screw rod, the second screw rod and the pressing plate.
8. The inside turning process according to claims 2-4, wherein the fixedly connecting the center of the box bottom with the vertical lathe chuck by using a center connecting device comprises:
a lower cushion block is arranged between the center of the box bottom and the flower disc of the vertical lathe;
an upper pressing block is arranged at the upper end of the center of the box bottom;
and a connecting piece using the central connecting device sequentially penetrates through the vertical lathe chuck, the lower cushion block, the bottom center of the box and the upper pressing block and is fixed by a fourth nut.
9. The inside turning process according to any one of claims 1 to 4, wherein before placing the large-end port of the tank bottom on the vertical lathe chuck in an upward direction, the process comprises the following steps:
a reference reticle perpendicular to the central axis of the box bottom is arranged on the bottom surface of the box bottom;
adjusting the height of the port supporting device to enable the bottom port ring to be at the same height comprises:
and aligning the circular reference reticle on the bottom surface of the box.
10. The inside turning process according to claim 3, wherein said using the bottom support to support the bottom surface of the box is preceded by: and processing the upper side surface of the bottom support into an arc shape so as to enable the upper side surface of the bottom support to be attached to the bottom surface of the box.
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| CN202111009550.6A CN113751731A (en) | 2021-08-31 | 2021-08-31 | Inner-type turning process for bottom of rocket tank |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115156844A (en) * | 2022-06-08 | 2022-10-11 | 上海航天设备制造总厂有限公司 | Machining method for integrally formed box bottom of carrier rocket fuel storage box |
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