CN216298542U

CN216298542U - Machine tool workbench for internal turning of rocket tank bottom

Info

Publication number: CN216298542U
Application number: CN202122073571.6U
Authority: CN
Inventors: 张朋朋; 刘旭升
Original assignee: Zhejiang Landspace Technology Co Ltd
Current assignee: Zhejiang Landspace Technology Co Ltd
Priority date: 2021-08-31
Filing date: 2021-08-31
Publication date: 2022-04-15
Anticipated expiration: 2031-08-31

Abstract

The utility model provides a machine tool workbench for internal turning of a rocket tank bottom, which comprises: the vertical lathe is provided with a flower disc and a supporting assembly; wherein the support assembly comprises a support rod and a pressure plate; the upper end of the supporting rod is connected with the pressing plate; the lower end of the supporting rod is connected with the vertical lathe chuck through a first sliding block; the first sliding block slides along a linear guide rail arranged in the radial direction of the vertical lathe chuck, drives the supporting rod to move in the radial direction of the vertical lathe chuck, and is used for adaptively connecting the pressing plate with the outer edge of the bottom port of the box. The machine tool workbench reduces the influence of clamping stress on the box bottom inner-type turning process effect.

Description

Machine tool workbench for internal turning of rocket tank bottom

Technical Field

The utility model relates to the field of machining of carrier rocket storage tanks, in particular to a machine tool workbench for internal turning of the 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, it is very important to design a machine tool workbench for inner-type turning of the rocket tank bottom.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provides a machine tool workbench for internal turning of the rocket tank bottom.

The utility model provides a machine tool workbench for internal turning of a rocket tank bottom, which comprises: the vertical lathe is provided with a flower disc and a supporting assembly; wherein the support assembly comprises a support rod and a pressure plate; the upper end of the supporting rod is connected with the pressing plate; the lower end of the supporting rod is connected with the vertical lathe chuck through a first sliding block; the first sliding block slides along a linear guide rail arranged in the radial direction of the vertical lathe chuck, drives the supporting rod to move in the radial direction of the vertical lathe chuck, and is used for adaptively connecting the pressing plate with the outer edge of the bottom port of the box.

According to one embodiment of the utility model, the vertical lathe chuck further comprises a central connecting assembly, wherein the central connecting assembly is used for penetrating through the center of the bottom of the box to fixedly connect the bottom of the box with the vertical lathe chuck.

According to one embodiment of the utility model, the upper end of the supporting rod is in threaded connection with the pressing plate, the supporting rod penetrates through the pressing plate, and the pressing plate and the supporting rod are fixed by arranging a first nut and a second nut on the upper end surface and the lower end surface of the pressing plate respectively.

According to one embodiment of the utility model, the lower end of the support rod is in threaded connection with the first slider.

According to one embodiment of the utility model, the support assembly further comprises: the height of the first screw rod and the second screw rod is adjustable; the lower ends of the first screw and the second screw are connected with a vertical lathe chuck through a second sliding block and a third sliding block respectively; 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 linear guide rail; the upper ends of the first screw rod and the second screw rod are in contact with the lower end surface of the pressing plate and are used for supporting the pressing plate; the upper end of the supporting rod is in threaded connection with the pressing plate, the supporting rod penetrates through the pressing plate, and the supporting rod, the first screw rod, the second screw rod and the pressing plate are fixed through a third nut.

According to one embodiment of the utility model, the device comprises at least four support assemblies and a corresponding number of first sliding blocks; the supporting assembly is connected with the vertical lathe chuck through the first sliding block and the corresponding number of linear guide rails uniformly arranged along the circumferential direction of the vertical lathe chuck.

According to one embodiment of the utility model, the support assembly further comprises a bottom support for supporting the bottom surface of the tank; the bottom support passes through the fourth slider with linear guide is connected with the merry go round machine flower disc, the last side of bottom support is the arc to the arc of adaptation bottom of the case face.

According to one embodiment of the utility model, at least four of said bottom supports are comprised.

According to one embodiment of the utility model, the central connection assembly comprises: the upper pressing block, the lower cushion block and the connecting piece are arranged on the upper die; the connecting piece is used for fixedly connecting the upper pressing block, the lower cushion block and the center of the box bottom with the vertical lathe chuck.

According to one embodiment of the utility model, the connector comprises a bolt and a fourth nut; the bolt sequentially penetrates through the vertical lathe chuck, the lower cushion block, the box bottom central position and the upper pressing block, and one side, away from the box bottom central position, of the upper pressing block is fixed by the fourth nut.

According to the machine tool workbench for turning the inner shape of the bottom of the rocket tank, a flexible simple tool is adopted to slightly and forcibly deform a clamping tank bottom circular ring, so that clamping stress is reduced, and the influence of the clamping stress on the process effect of turning the inner shape of the tank bottom is reduced. In addition, the machine tool workbench turned in the inner shape of the rocket tank bottom adopts a combined tool design idea, is simple, convenient and quick, and is easy to adjust. And the adaptability is strong, and the machine tool workbench can adapt to 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 utility model, as claimed.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the utility model and together with the description, serve to explain the principles of the utility model.

FIG. 1 is a perspective view of a machine tool table for internal lathe turning of rocket tank bottoms in accordance with one embodiment of the present invention;

FIG. 2 is a top view of a machine tool table for internal lathe turning of the rocket tank bottom of one embodiment of the present invention;

FIG. 3 is a cross-sectional view A-A of FIG. 2;

FIG. 4 is an enlarged view of B in FIG. 3;

FIG. 5 is a cross-sectional view A-A of a machine tool table for internal lathe turning of the rocket tank bottom of one embodiment of the present invention;

FIG. 6 is an enlarged view of C in FIG. 5;

fig. 7 is an enlarged view of D in fig. 5.

Description of reference numerals:

1-vertical lathe flower 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 component, 9-first nut, 10-second nut, 11-first screw rod, 12-second screw rod, 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 component, 21-bolt, 22-fourth nut, 23-flanging, 24-first press plate, 25-second press plate, 26-first support rod, 27-second support rod, 28-fifth slide block, 29-sixth slide block 29, 30-third screw 30, 31-fourth screw, 32-fifth nut, 33-sixth nut.

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 utility model and are not to be construed as limiting the utility model, for the purposes of illustrating the principles of the utility model. 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 utility model 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.

FIG. 1 is a perspective view of a machine tool table for internal lathe turning of rocket tank bottoms in accordance with one embodiment of the present invention; FIG. 2 is a top view of a machine tool table for internal lathe turning of the rocket tank bottom of one embodiment of the present invention; FIG. 3 is a cross-sectional view A-A of FIG. 2; FIG. 4 is an enlarged view of B in FIG. 3; FIG. 5 is a cross-sectional view A-A of a machine tool table for internal lathe turning of the rocket tank bottom of one embodiment of the present invention; FIG. 6 is an enlarged view of C in FIG. 5; fig. 7 is an enlarged view of D in fig. 5.

As shown in fig. 1, 2 and 3, the present invention provides a machine tool table for internal turning of rocket tank bottoms, comprising: a vertical lathe chuck 1 and a support component 2. Wherein, the supporting component 2 comprises a supporting rod 3 and a pressing plate 4. The upper end of bracing piece 3 is connected with clamp plate 4, and the lower extreme of bracing piece 3 is connected with merry go round machine flower disc 1 through first slider 5. The first sliding block 5 slides along a linear guide rail 6 arranged in the radial direction of the vertical lathe chuck 1 to drive the support rod 3 to move in the radial direction of the vertical lathe chuck 1 so as to adaptively connect the pressing plate 4 with the outer edge 7 of the bottom port of the box.

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.

In this embodiment, the machine tool workbench turned by the inner shape of the rocket tank bottom adopts a clamping tank bottom circular ring which is slightly forced to deform by a flexible simple tool. The lower end of the support rod 3 is connected with the vertical lathe chuck 1 through a first slide block 5, and the upper end is connected with a press plate 4. And placing the box bottom port upwards on the vertical lathe chuck 1 and righting the position. The linear guide 6 that sets up along the radial direction of merry go round machine flower disc 1 moves first slider 5 to drive bracing piece 3 and clamp plate 4 and move to the bottom of the case, until clamp plate 4 can connect the outer border 7 of case bottom mouth, thereby fix the bottom of the case on merry go round machine flower disc 1. By adopting the machine tool workbench provided by the embodiment, the box bottom is fixed on the workbench, and the port of the box bottom is supported by the support component 2, so that the clamping stress is reduced, the influence of the clamping stress on the inner turning process effect of the box bottom is reduced, and the turning quality consistency is improved. The machine tool workbench provided by the embodiment supports the box bottom port, and the box bottom port can be prevented from deforming during internal turning. In addition, the workbench adopts a combined tool design idea, is simple, convenient and quick, is easy to adjust, and has strong adaptability. The box bottom with different wall thicknesses and different deformation states can be adapted by moving the position of the supporting rod 3. The problem of whole bottom of the case profile precision turning deformation is solved.

Further, the linear guide 6 is an inverted T-shaped groove formed in the chuck 1 of the vertical lathe, and correspondingly, the first slider 5 is an inverted T-shaped slider 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.

As shown in fig. 3, according to an embodiment of the present invention, the machine tool table includes a center connection assembly 8 in addition to the chuck table 1 and the support assembly 2. The central connecting component 8 is used for penetrating the center of the box bottom to fixedly connect the box bottom with the vertical lathe chuck 1. Through using central coupling assembling 8 with bottom of the case bottom 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 4, according to one embodiment of the present invention, the upper end of the support rod 3 is screw-coupled with the pressing plate 4. The supporting rod 3 penetrates through the pressing plate 4, and the pressing plate 4 and the supporting rod 3 are fixed by respectively arranging a first nut 9 and a second nut 10 on the upper end face and the lower end face of the pressing plate 4.

Specifically, a linear guide 6 arranged along the radial direction of the vertical lathe chuck 1 moves the first slider 5 to drive the support rod 3 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 first nut 9 and the second nut 10, 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, and then screwing the first nut 9 and the second nut 10 to fix the pressing plate 4 and the supporting 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.

According to one embodiment of the present invention, the lower end of the support rod 3 is threadedly coupled to the first slider 5.

As shown in fig. 5 and 6, according to an embodiment of the present invention, the support assembly 2 includes a first screw 11 and a second screw 12 in addition to the support bar 3 and the pressing plate 4, and the first screw 11 and the second screw 12 are height-adjustable. The lower ends of the first screw 11 and the second screw 12 are respectively connected with the vertical lathe chuck 1 through a second slide block 13 and a third slide block 14, and the first screw 11, the support rod 3 and the second screw 12 are sequentially arranged from the center of the vertical lathe chuck outwards along the linear guide rail 6. The upper ends of the first screw 11 and the second screw 12 contact the lower end surface of the pressure plate 4 for supporting the pressure plate 4. The upper end of the supporting rod 3 is in threaded connection with the pressing plate 4, the supporting rod 3 penetrates through the pressing plate 4, and the supporting rod 3, the first screw rod 11, the second screw rod 12 and the pressing plate 4 are fixed through a third nut 15.

Specifically, the linear guide 6 arranged along the radial direction of the vertical lathe chuck 1 moves the first slider 5, the second slider 13 and the third slider 14 to drive the first screw 11, the support rod 3, the second screw 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 machine tool workbench provided by the embodiment adopts a lever principle, utilizes the support rod 3, the first screw rod 11 with adjustable height, the second screw rod 12 with adjustable height, the pressing plate 4, the third nut 15, the first slide block 5, the second slide block 13 and the third slide block 14 to form a set of lever system, and fixes the box bottom on the flower disc of the vertical lathe, so that the bottom support 16 in the process of turning the inner model can be prevented from sideslipping on the flower disc 1 of the vertical lathe, the subsequent turning of the inner model can be more stable, the circular ring at the port of the box bottom is at the same height, and the position and the precision of the subsequent turning of the inner model 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 the outward flange 23, so that the port of 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 4, 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 turning is finished, the outward flanging 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 cannot be left on the box bottom.

It should be noted that the above is only one embodiment of the present invention, and the present invention is not limited thereto. For example, the lower ends of the first screw 11 and the second screw 12 may be directly placed on the chuck 1 without being connected to the chuck 1 via a slider.

According to one embodiment of the utility model, at least four support assemblies 2 and a corresponding number of first slides 5 are included. The supporting component 2 is respectively connected with the vertical lathe chuck 1 through a first sliding block 5 and linear guide rails 6 which are uniformly arranged along the circumferential direction of the vertical lathe chuck 1 and correspond to the vertical lathe chuck in quantity. According to the conditions of roundness deformation, size and the like of the box bottom, the number of the supporting components 2 can be increased, and the stability during inner shape turning is improved.

As shown in fig. 3, according to an embodiment of the present invention, the machine tool table includes a bottom support 16 in addition to the chuck table 1 and the support assembly 2, the bottom support 16 supporting the bottom surface of the tank. The bottom support 16 is connected with the vertical lathe chuck 1 through a fourth sliding block 17 and a linear guide rail 6, and the upper side surface of the bottom support 16 is arc-shaped so as to adapt to the arc shape of the bottom surface of the box. The side surface on 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.

Further, at least 4 bottom supports 16 can be included, 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 can be arranged along the linear guide rail 6 in the same radial direction with the support component 2, so that the number of the linear guide rails 6 is reduced, and the support effect on the bottom of the box is better.

The bottom support 16 can also be fixed directly to the chuck 1 by screws.

As shown in fig. 5 and 7, according to an embodiment of the present invention, the machine tool table includes, in addition to the vertically-movable chuck 1 and the support assembly 2, a bottom support 16, a first presser plate 24, a second presser plate 25, a first support rod 26, a second support rod 27, a third screw 30, and a fourth screw 31, and the bottom support 16 is used for supporting the bottom surface of the tank. The third screw 30 and the fourth screw 31 are adjustable in height. The upper ends of the first supporting rod 26 and the second supporting rod 27 respectively penetrate through the first pressing plate 24 and the second pressing plate 25 and are respectively connected with the first pressing plate 24 and the second pressing plate 25 through a fifth nut 32 and a sixth nut 33, and the lower ends of the first supporting rod 26 and the second supporting rod 27 are respectively connected with the vertical lathe chuck 1 through a fifth sliding block 28 and a sixth sliding block 29. The third screw 30, the first support rod 26, the bottom support 16, the second support rod 27 and the fourth screw 31 are sequentially arranged along the linear guide 6 from the center of the vertical lathe chuck 1 to the outside. The third screw 30 and the fourth screw 31 are placed on the vertical lathe chuck 1, and the upper ends of the third screw 30 and the fourth screw 31 are respectively contacted with the lower end surfaces of one ends of the first pressing plate 24 and the second pressing plate 25 and are respectively used for supporting the first pressing plate 24 and the second pressing plate 25. The left and right sides of the bottom support 16 are respectively provided with a groove, and the first pressing plate 24 and the second pressing plate 25 are respectively arranged in the grooves of the bottom support near each other along the radial direction of the vertical faceplate 1.

Specifically, the linear guide 6 arranged along the radial direction of the vertical lathe disc 1 moves the fifth slider 28 and the sixth slider 29 to respectively drive the first support rod 26 and the second support rod 27 to move towards the bottom support 16 until the end ends, close to each other, of the first pressing plate 24 and the second pressing plate 25 are respectively placed in two grooves of the bottom support 16. And loosening the fifth nut 32 and the sixth nut 33, adjusting the heights of the first pressing plate 24 and the second pressing plate 25 until the lower end faces of the first pressing plate 24 and the second pressing plate 25 press the bottom support 16 through two grooves of the bottom support 16, and adjusting the heights of the third screw 30 and the fourth screw 31 to enable the upper end faces of the third screw 30 and the fourth screw 31 to respectively contact the lower end faces of the first pressing plate 24 and the second pressing plate 25 to respectively support the first pressing plate 24 and the second pressing plate 25. The fifth nut 32 and the sixth nut 33 are tightened to fix the bottom support 16 to the chuck 1. The bottom support 16 is fixed on the vertical lathe chuck 1 by using the first support rod 26, the second support rod 27, the third screw rod 30, the fourth screw rod 31, the first pressure plate 24 and the second pressure plate 25, so that the bottom support 16 can be prevented from sliding laterally on the vertical lathe chuck 1 in the internal type turning process.

In the present embodiment, the third screw 30 and the fourth screw 31 may be connected to the vertical lathe disc 1 by a slider.

Further, the bottom support 16 may be disposed at a contoured location from the bottom center 2/3.

The utility model does not make specific limitations on the material and size of the bottom support and the connection mode of the vertical lathe chuck.

As shown in fig. 3, according to one embodiment of the present invention, the center connection assembly 8 includes: an upper press block 18, a lower cushion block 19 and a connecting piece 20. The connecting piece 20 is used for fixedly connecting the upper pressing block 18, the lower cushion block 19 and the center of the box bottom with the vertical lathe chuck 1. 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 is placed on the lower cushion block 19, the center of the box bottom is correspondingly arranged on the lower cushion block 19, an upper pressing block 18 is arranged at the upper end of the center of the box bottom, 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 center connecting assembly 8 is arranged, so that the center of the box bottom can be supported, and 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.

Further, the connector 20 includes a bolt 21 and a fourth nut 22. The bolt 21 penetrates through the vertical lathe chuck 1, the lower cushion block 19, the center of the bottom of the box and the upper pressing block 18 in sequence, and is fixed by a fourth nut 22 on one side of the upper pressing block 18 far away from the center of the bottom of the box.

Further, a handwheel is provided at the upper end of the fourth nut 22 to facilitate the application of torque when tightening the fourth nut 22.

Further, to prevent loosening of the fourth nut 22 during inside turning, the direction of the thread helix on the fourth nut 22 is opposite to the inside turning direction. For example, turning in a right-hand manner, the threads on fourth nut 22 are left-hand, and thus, fourth nut 22 is not unscrewed during turning.

According to the machine tool workbench provided by the embodiment, the box bottom is clamped and fixed by adopting the micro forced deformation of the center fixing, the top upper pressing lower support and the peripheral auxiliary support, so that the stress deformation is reduced, and the stability of the turning quality is improved.

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

1. A machine tool table for internal turning of rocket tank bottoms, comprising: the vertical lathe is provided with a flower disc and a supporting assembly;

wherein the support assembly comprises a support rod and a pressure plate;

the upper end of the supporting rod is connected with the pressing plate; the lower end of the supporting rod is connected with the vertical lathe chuck through a first sliding block;

the first sliding block slides along a linear guide rail arranged in the radial direction of the vertical lathe chuck, drives the supporting rod to move in the radial direction of the vertical lathe chuck, and is used for adaptively connecting the pressing plate with the outer edge of the bottom port of the box.

2. The machine tool table of claim 1, further comprising a central coupling assembly for fixedly coupling the floor to the chuck of the vertical lathe through the center of the floor.

3. A machine tool table according to claim 1 or 2, wherein the upper end of the support rod is in threaded connection with the pressure plate, the support rod penetrates through the pressure plate, and the pressure plate and the support rod are fixed by respectively providing a first nut and a second nut on the upper end surface and the lower end surface of the pressure plate.

4. A machine tool table according to claim 1 or 2 wherein the lower end of the support bar is threadedly connected to the first slide.

5. A machine tool table according to claim 1 or 2, wherein the support assembly further comprises: the height of the first screw rod and the second screw rod is adjustable;

the lower ends of the first screw and the second screw are connected with a vertical lathe chuck through a second sliding block and a third sliding block respectively;

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 linear guide rail;

the upper ends of the first screw rod and the second screw rod are in contact with the lower end surface of the pressing plate and are used for supporting the pressing plate;

the upper end of the supporting rod is in threaded connection with the pressing plate, the supporting rod penetrates through the pressing plate, and the supporting rod, the first screw rod, the second screw rod and the pressing plate are fixed through a third nut.

6. A machine tool table according to claim 1 or 2, comprising at least four of said support assemblies and a corresponding number of said first slides; the supporting assembly is connected with the vertical lathe chuck through the first sliding block and the corresponding number of linear guide rails uniformly arranged along the circumferential direction of the vertical lathe chuck.

7. The machine tool table of claim 6, wherein the support assembly further comprises a base support for supporting a bin floor;

the bottom support passes through the fourth slider with linear guide is connected with the merry go round machine flower disc, the last side of bottom support is the arc to the arc of adaptation bottom of the case face.

8. A machine tool table according to claim 7 comprising at least four said base supports.

9. The machine tool table of claim 2, wherein the central connection assembly comprises: the upper pressing block, the lower cushion block and the connecting piece are arranged on the upper die;

the connecting piece is used for fixedly connecting the upper pressing block, the lower cushion block and the center of the box bottom with the vertical lathe chuck.

10. A machine tool table according to claim 9 wherein the connector comprises a bolt and a fourth nut;

the bolt sequentially penetrates through the vertical lathe chuck, the lower cushion block, the box bottom central position and the upper pressing block, and one side, away from the box bottom central position, of the upper pressing block is fixed by the fourth nut.