Positioning tool for machining thin-wall shell workpiece

Abstract

The utility model relates to the technical field of thin-wall shell machining clamps, in particular to a positioning tool for thin-wall shell workpiece machining, an auxiliary device comprises a through groove, the through groove is formed in the surface of the inner wall of one side of a transverse strip plate, a sliding rod is fixedly installed between the inner walls of the two ends of the through groove, and the surface of the sliding rod is connected with two sliding strip plates in a sliding mode. Vertical battens are fixedly installed on the side faces of the two sliding battens, vertical grooves are formed in the surfaces of the vertical battens, two sliding blocks are slidably connected into the vertical grooves, short rods are fixedly installed at the ends, away from the vertical grooves, of the sliding blocks, and a C-shaped clamp and a conical clamp are fixedly installed at the ends, away from the sliding blocks, of the two short rods correspondingly. According to the thin-wall annular shell machining clamp, the problems that the investment cost of factory equipment is high due to the fact that the thin-wall annular shell can be machined only by purchasing two kinds of clamps of an existing thin-wall annular shell machining clamp, and the thin-wall annular shell needs to be replaced between the two kinds of clamps, time needs to be consumed in the replacement process, and the machining time is shortened are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to thin -walled shell processing fixture technical field especially relates to a kind of positioning tool for thin -walled shell workpiece processing. BACKGROUND

[0002] Thin-walled annular shell refers to the piece-shaped structure that is enclosed by two curved surfaces, and the thickness t is much smaller than the minimum curvature radius R of the middle surface and the plane size. It is the general term of thin shell and medium-thick shell. It has wide application in the field of aviation, for example, the fuel tank, control box, engine support of aircraft are all thin-walled annular shell. In addition, thin-walled annular shell is also applied to other components in the field of aerospace such as satellite and rocket. During the production of thin-walled annular shell, the side surface, top surface and bottom surface of the initially formed thin-walled annular shell need to be finely processed. Before processing, it needs to be clamped and fixed to facilitate processing.

[0003] The existing thin-walled annular shell machining fixture is divided into two types. One is to vertically stand the thin-walled annular shell and clamp and fix its top surface or bottom surface. The other is to horizontally lie the thin-walled annular shell and clamp and fix its side surface. Therefore, when processing the thin-walled annular shell, two types of fixtures need to be replaced for processing the top surface or bottom surface. First, the factory needs to purchase two types of fixtures to process the thin-walled annular shell, which leads to high equipment investment cost. Second, the thin-walled annular shell needs to be replaced between the two types of fixtures, which takes time and prolongs the processing time. Third, the two types of fixtures occupy a large area, and the clamping methods are different. The clamping angle needs to be adjusted before clamping each time, which wastes time and is not conducive to improving the processing efficiency of the thin-walled annular shell. SUMMARY

[0004] The utility model aims at solving the technical problems in the above background, and provides a positioning tool for thin-walled shell workpiece processing.

[0005] In order to achieve the above object, the utility model discloses the following technical scheme: a kind of positioning tool for thin-wall shell workpiece processing, including two bases, the surface of two bases is fixedly installed with two support rods, the surface of the one end of four support rods away from base is fixedly installed with horizontal batten, the surface of horizontal batten is fixedly installed with bearing seat, the surface of the one side of horizontal batten is fixedly installed with two fixed plates, screw rod is rotatably connected between two fixed plates, the surface of screw rod is fixedly installed with rotating wheel, the thread of the surface of screw rod is reverse thread with rotating wheel as center, circular rod is fixedly installed between two fixed plates, the surface of screw rod is threadedly connected with two movable plates, the one side inner wall surface of horizontal batten is equipped with auxiliary device, the auxiliary device includes through slot, the through slot is opened in the one side inner wall surface of horizontal batten, bearing seat is fixedly installed between the inner wall of both ends of through slot, the surface of slide bar is slidably connected with two slide strips, the side of two slide strips is fixedly installed with vertical batten, the one end of slide strip away from vertical batten and movable plate is fixedly connected.The setting of slide strip has the effect of driving vertical batten to move, and the setting of slide bar has the effect of allowing slide strip to move.

[0006] Preferably, the surface of the vertical batten is provided with a vertical groove, the inside of the vertical groove is slidably connected with two sliding blocks, the one end of the sliding block away from the vertical groove is fixedly installed with a short rod, the one end of the two short rods away from the sliding block is fixedly installed with a C-shaped clamp and a conical clamp. The setting of the C-shaped clamp and the conical clamp has the effect of clamping and fixing the end face and the side face of the thin-wall annular shell.

[0007] Preferably, the side of the two vertical battens is provided with a strip-shaped groove, the inside of the strip-shaped groove is slidably connected with a displacement plate, the one end of the displacement plate away from the strip-shaped groove is fixedly connected with the sliding block. The setting of the displacement plate has the effect of driving the sliding block to move inside the vertical groove.

[0008] Preferably, the surface of the displacement plate is threadedly connected with a bolt, and the side of the vertical batten is uniformly provided with a plurality of threaded holes. The setting of the bolt and the threaded hole has the effect of limiting the position of the displacement plate inside the strip-shaped groove.

[0009] Preferably, the side of the bearing seat is provided with an extension device, the extension device includes an extension rod, the extension rod is fixedly installed on the side of the bearing seat, the surface of the extension rod is slidably connected with a T-shaped plate, the inside of the bearing seat is slidably connected with two extension plates, the one side surface of the two extension plates is uniformly provided with a plurality of insertion holes, the surface of the T-shaped plate is fixedly installed with two insertion rods, and the one end of the T-shaped plate away from the insertion rod is fixedly installed with a pull rod. The setting of the insertion rod and the insertion hole has the effect of limiting the position of the extension plate.

[0010] Preferably, the surface of the end of the extension rod away from the bearing seat is fixedly provided with a circular plate, and the circular plate and the T-shaped plate are fixedly provided with a spring.

[0011] Compared with the prior art, the utility model has the advantages and positive effects that:

[0012] 1. In the utility model, when the two ends of the thin-walled annular shell need to be clamped and fixed, the thin-walled shell is first placed horizontally on the surface of the bearing seat, then the rotating wheel is rotated, the rotating wheel drives the threaded rod to rotate, the threads on the surface of the threaded rod are reverse threads with the rotating wheel as the center, so when the rotating wheel drives the threaded rod to rotate, the two movable plates connected with the threads on the surface of the threaded rod move towards each other on the surface of the circular rod, the two movable plates moving towards each other on the surface of the circular rod drives the two slide plates to move towards each other on the surface of the slide rod, the two slide plates moving towards each other on the surface of the slide rod drives the two vertical plates to move towards each other, the two vertical plates moving towards each other drives the two conical clamps to move towards each other, the two conical clamps moving towards each other clamps the thin-walled annular shell from the side of the thin-walled annular shell, when the side of the thin-walled annular shell needs to be clamped and fixed, the thin-walled annular shell is first placed vertically on the surface of the bearing plate, then the bolts on the displacement plates matched with the conical clamps are loosened, the bolts are screwed out of the inside of the threaded holes, the bolts and the threaded holes are separated, so the displacement plates lose the limit, at this time, the displacement plates can be moved, the displacement plates move in the inside of the strip-shaped groove, the displacement plates moving in the inside of the strip-shaped groove drives the slide blocks to move in the inside of the vertical grooves, the slide blocks moving in the inside of the vertical grooves drives the short rods and the conical clamps to move, when the conical clamps are moved to the appropriate height, the bolts are screwed into the inside of the corresponding threaded holes again, then the bolts on the displacement plates matched with the C-shaped clamps are loosened, and finally the C-shaped clamps are moved to the position where the conical clamps start, then the above operation is repeated, so that the C-shaped clamps clamp the side of the thin-walled annular shell, through the cooperation of the above structure, the device can clamp the thin-walled annular shell from the side and the end face, only one equipment is needed to realize the clamping of the thin-walled annular shell twice, the equipment investment cost of the factory is saved, and the equipment floor area is reduced.

[0013] 2. The utility model discloses a extension device is set up, when the thin -walled annular casing is placed horizontally, the area of bearing seat is not enough, needs to increase the bearing area of bearing plate, first pull draw bar, and draw bar removes and drives T type board to move on the surface of extension rod, and T type board moves on the surface of extension rod and extrudes spring, and the spring is compressed under stress, and T type board moves on the surface of extension rod and also drive plug rod to move, and plug rod moves and makes its own remove from the inside of the jack, and the separation of plug rod and jack makes extension board lose the location in the inside of bearing seat, when this, extension board can be pulled out to the outside, when extension board moves to the position of being appropriate, release draw bar, and the rebound force of spring makes plug rod reinsert into the inside of corresponding jack, and this is used to fix the position of extension board, and the cooperation of above -mentioned structure makes extension board can increase the bearing area of bearing seat, to adapt to the support of the thin -walled annular casing of different length size, further improve the applicability of device. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 A three-dimensional structure schematic view of the positioning tool for thin-wall shell workpiece machining is provided for the utility model;

[0015] Figure 2 A left view structure schematic view of the positioning tool for thin-wall shell workpiece machining is provided for the utility model;

[0016] Figure 3 The positioning tool for thin-wall shell workpiece machining is provided for the utility model Figure 1 A structure schematic view of A place in the utility model is provided;

[0017] Figure 4 A structure schematic view of B place in the positioning tool for thin-wall shell workpiece machining is provided for the utility model; Figure 2

[0018] Figure 5 A structure schematic view of C place in the positioning tool for thin-wall shell workpiece machining is provided for the utility model; Figure 2

[0019] LEGEND:

[0020] 1, base; 2, support rod; 3, cross strip board; 4, bearing seat; 5, auxiliary device; 501, through slot; 502, sliding rod; 503, sliding strip board; 504, vertical strip board; 505, vertical groove; 506, sliding block; 507, short rod; 508, C clamp; 509, conical clamp; 510, strip groove; 511, displacement board; 512, bolt; 513, screw hole; 6, extension device; 61, extension rod; 62, T plate; 63, extension board; 64, plug rod; 65, jack; 66, draw bar; 67, round plate; 68, spring; 7, fixed plate; 8, threaded rod; 9, rotating wheel; 10, round rod; 11, movable plate.​​ DETAILED DESCRIPTION

[0021] In order to enable the above-mentioned purposes, features and advantages of the present application to be more clearly understood, the present application will be further described below with reference to the drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0022] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a variety of ways beyond the specific details set forth herein, and the present application is not limited to the specific embodiments described below.

[0023] Please refer to Figures 1-5 The present application provides a technical scheme: a positioning tool for thin-walled shell workpiece machining, comprising two bases 1, the surfaces of the two bases 1 are fixedly provided with two supporting rods 2, the surfaces of the distal ends of the four supporting rods 2 away from the bases 1 are fixedly provided with horizontal strip plates 3, the surfaces of the horizontal strip plates 3 are fixedly provided with bearing seats 4, the surfaces of one side of the horizontal strip plates 3 are fixedly provided with two fixed plates 7, the two fixed plates 7 are rotatably connected with a threaded rod 8, the surface of the threaded rod 8 is fixedly provided with a rotating wheel 9, the threads on the surface of the threaded rod 8 are reverse threads with the rotating wheel 9 as the center, the two fixed plates 7 are fixedly provided with a round rod 10, and the surface of the threaded rod 8 is threadedly connected with two movable plates 11.

[0024] The specific settings and effects of the auxiliary device 5 and the extension device 6 will be described below.

[0025] In the present embodiment: the inner wall surface of one side of the horizontal strip plate 3 is provided with an auxiliary device 5, the auxiliary device 5 comprises a through slot 501, the through slot 501 is arranged on the inner wall surface of one side of the horizontal strip plate 3, the two end inner walls of the through slot 501 are fixedly provided with a sliding rod 502, the surface of the sliding rod 502 is slidably connected with two sliding strip plates 503, the side surfaces of the two sliding strip plates 503 are fixedly provided with vertical strip plates 504, and the distal end of the sliding strip plate 503 away from the vertical strip plate 504 is fixedly connected with the movable plate 11.

[0026] In the present embodiment: the setting of the sliding strip plate 503 plays a role in driving the vertical strip plate 504 to move, and the setting of the sliding rod 502 plays a role in allowing the sliding strip plate 503 to move.

[0027] Specifically, the surface of the vertical strip plate 504 is provided with a vertical slot 505, the inside of the vertical slot 505 is slidably connected with two sliding blocks 506, the distal end of the sliding block 506 away from the vertical slot 505 is fixedly provided with a short rod 507, and the distal end of the two short rods 507 away from the sliding block 506 is respectively fixedly provided with a C-shaped clamp 508 and a conical clamp 509.

[0028] In the embodiment, the C-shaped clamp 508 and the conical clamp 509 are arranged to clamp and fix the end surface and the side surface of the thin-walled annular shell.

[0029] Specifically, the side surface of each vertical batten 504 is provided with a strip-shaped groove 510, and a displacement plate 511 is slidably connected in the strip-shaped groove 510. The end of the displacement plate 511 away from the strip-shaped groove 510 is fixedly connected with the sliding block 506. The displacement plate 511 is arranged to drive the sliding block 506 to move in the vertical groove 505.

[0030] Specifically, the surface of the displacement plate 511 is threadedly connected with a bolt 512, and the side surface of the vertical batten 504 is uniformly provided with a plurality of threaded holes 513. The bolt 512 and the threaded hole 513 are arranged to limit the position of the displacement plate 511 in the strip-shaped groove 510.

[0031] In the embodiment, the side surface of the bearing seat 4 is provided with an extension device 6. The extension device 6 includes an extension rod 61 fixedly installed on the side surface of the bearing seat 4, a T-shaped plate 62 slidably connected to the surface of the extension rod 61, and two extension plates 63 slidably connected in the bearing seat 4. The side surface of each of the two extension plates 63 is uniformly provided with a plurality of insertion holes 65. The T-shaped plate 62 is fixedly installed with two insertion rods 64 on the surface thereof, and a pull rod 66 is fixedly installed at the end of the T-shaped plate 62 away from the insertion rods 64. When the thin-walled annular shell is placed horizontally, the area of the bearing seat 4 is not enough, and the bearing area of the bearing plate needs to be increased. First, the pull rod 66 is pulled, and the movement of the pull rod 66 drives the T-shaped plate 62 to move on the surface of the extension rod 61. The movement of the T-shaped plate 62 on the surface of the extension rod 61 will squeeze the spring 68, so that the spring 68 is compressed under stress. At the same time, the movement of the T-shaped plate 62 on the surface of the extension rod 61 also drives the insertion rod 64 to move, and the movement of the insertion rod 64 makes it move out of the insertion hole 65. The separation of the insertion rod 64 and the insertion hole 65 makes the extension plate 63 lose the limit in the bearing seat 4. At this time, the extension plate 63 can be pulled outwards. When the extension plate 63 moves to the appropriate position, the pull rod 66 is loosened, and the rebound force of the spring 68 makes the insertion rod 64 reinserted into the corresponding insertion hole 65, so as to fix the position of the extension plate 63. Through the cooperation of the above structure, the extension plate 63 can increase the bearing area of the bearing seat 4, so as to adapt to the support of thin-walled annular shells of different lengths and sizes, and further improve the applicability of the device.

[0032] Specifically, the end of the extension rod 61 away from the bearing seat 4 is fixedly installed with a circular plate 67, and the spring 68 is fixedly installed between the circular plate 67 and the T-shaped plate 62.

[0033] In the embodiment, the spring 68 is arranged to limit the position of the T-shaped plate 62 on the surface of the extension rod 61.

[0034] Working principle: by setting the auxiliary device 5, when need to clamp the two ends of the thin-walled ring shell fixed, first of all, the thin-walled shell is placed horizontally on the surface of the bearing seat 4, then turn the rotating wheel 9, rotating wheel 9 rotating screw rod 8, because the screw rod 8 surface thread with rotating wheel 9 as the center of each other reverse thread, so rotating wheel 9 in the screw rod 8 rotation, its surface thread connection two movable plate 11 will move in the surface of the round bar 10 to each other close direction, two movable plate 11 in the surface of the round bar 10 to each other close direction will drive two slide strip plate 503 in the surface of the slide bar 502 to each other close direction, two slide strip plate 503 in the surface of the slide bar 502 to each other close direction drive two vertical strip plate 504 to each other close direction, two vertical strip plate 504 to each other close direction drive two conical clamp 509 to each other close direction, two conical clamp 509 to each other close direction, so that its own from the thin-walled ring shell side clamp thin-walled ring shell, when need to clamp the side of the thin-walled ring shell fixed, first of all, the thin-walled ring shell is placed vertically on the surface of the bearing plate, then unscrew the bolt 512 on the displacement plate 511 matched with conical clamp 509, bolt 512 from the inside of the threaded hole 513 unscrewed, bolt 512 and threaded hole 513 separation makes displacement plate 511 lose limit, at this time can move displacement plate 511, so that displacement plate 511 moves in the inside of the strip groove 510, displacement plate 511 moves in the inside of the strip groove 510 drive the slider 506 in the inside of the vertical slot 505, slider 506 in the inside of the vertical slot 505 drive the short rod 507 and conical clamp 509 move, when the conical clamp 509 moves to the appropriate height, again screw the bolt 512 into the corresponding threaded hole 513 inside, then unscrew the bolt 512 on the displacement plate 511 matched with C clamp 508, then finally move the C clamp 508 to the position where the conical clamp 509 starts, then repeat the above operation, let C clamp 508 clamp the side of the thin-walled ring shell, through the cooperation of the above structure, so that the device can clamp the thin-walled ring shell from the side and end face, only need one equipment can realize the twice clamping of thin-walled ring shell, save the factory equipment investment cost, reduce the equipment area.When the thin-walled annular shell is placed transversely, the area of the bearing seat 4 is insufficient, and the bearing area of the bearing plate needs to be increased, first pull the pull rod 66, the pull rod 66 moves and drives the T-shaped plate 62 to move on the surface of the extension rod 61, the T-shaped plate 62 moves on the surface of the extension rod 61 and extrudes the spring 68, so that the spring 68 is forced to compress, at the same time, the movement of the T-shaped plate 62 on the surface of the extension rod 61 also drives the insertion rod 64 to move, the movement of the insertion rod 64 makes it move out of the inside of the insertion hole 65, the separation of the insertion rod 64 and the insertion hole 65 makes the extension plate 63 lose the limit in the inside of the bearing seat 4, at this time, the extension plate 63 can be pulled outwards, when the extension plate 63 moves to the appropriate position, release the pull rod 66, use the rebound force of the spring 68 to make the insertion rod 64 reinsert into the inside of the corresponding insertion hole 65, so as to fix the position of the extension plate 63 at this time, through the cooperation of the above structure, the extension plate 63 can increase the bearing area of the bearing seat 4, so as to adapt to the support of the thin-walled annular shell with different length and size, further improve the applicability of the device.

[0035] The above is only a preferred embodiment of the present application, and is not intended to limit the present application in other forms. Any skilled person in the art can modify or change the above disclosed technology content to equivalent embodiments applied to other fields, but any simple modification, equivalent change and modification of the above embodiments without departing from the technical solution of the present application, according to the technical essence of the present application, still belongs to the protection scope of the technical solution of the present application. In the description of the present application, it should be pointed out that, unless otherwise specified and limited, the terms "installation", "connection", "connection" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

Claims

1. A positioning fixture for machining thin-walled shell workpieces, comprising two bases (1), two support rods (2) fixedly mounted on the surfaces of the two bases (1), a horizontal bar (3) fixedly mounted on the surface of the four support rods (2) away from the bases (1), a bearing seat (4) fixedly mounted on the surface of the horizontal bar (3), two fixing plates (7) fixedly mounted on one side surface of the horizontal bar (3), a threaded rod (8) rotatably connected between the two fixing plates (7), a rotating wheel (9) fixedly mounted on the surface of the threaded rod (8), the threads on the surface of the threaded rod (8) being mutually opposite threads centered on the rotating wheel (9), a round rod (10) fixedly mounted between the two fixing plates (7), and two movable plates (11) threadedly connected to the surface of the threaded rod (8), characterized in that: An auxiliary device (5) is provided on one inner wall surface of the horizontal bar (3). The auxiliary device (5) includes a through groove (501). The through groove (501) is opened on one inner wall surface of the horizontal bar (3). A slide rod (502) is fixedly installed between the inner walls of the two ends of the through groove (501). Two slide plates (503) are slidably connected to the surface of the slide rod (502). Vertical bars (504) are fixedly installed on the sides of the two slide plates (503). 03) The end away from the vertical strip plate (504) is fixedly connected to the movable plate (11); the surface of the vertical strip plate (504) is provided with a vertical groove (505), and two sliders (506) are slidably connected inside the vertical groove (505). A short rod (507) is fixedly installed at the end of the slider (506) away from the vertical groove (505), and a C-type clamp (508) and a conical clamp (509) are fixedly installed at the ends of the two short rods (507) away from the sliders (506), respectively.

2. The positioning fixture for machining thin-walled shell workpieces according to claim 1, characterized in that: Both vertical strip plates (504) have strip grooves (510) on their sides. A displacement plate (511) is slidably connected inside the strip groove (510). The end of the displacement plate (511) away from the strip groove (510) is fixedly connected to the slider (506).

3. The positioning fixture for machining thin-walled shell workpieces according to claim 2, characterized in that: The displacement plate (511) is threaded with bolts (512), and the side of the vertical bar plate (504) is evenly provided with multiple threaded holes (513).

4. The positioning fixture for machining thin-walled shell workpieces according to claim 3, characterized in that: The side of the support (4) is provided with an extension device (6), the extension device (6) includes an extension rod (61), the extension rod (61) is fixedly installed on the side of the support (4), the surface of the extension rod (61) is slidably connected with a T-shaped plate (62), the inside of the support (4) is slidably connected with two extension plates (63), one side surface of the two extension plates (63) is evenly provided with multiple insertion holes (65), the surface of the T-shaped plate (62) is fixedly installed with two insertion rods (64), and the end of the T-shaped plate (62) away from the insertion rods (64) is fixedly installed with a pull rod (66).

5. A positioning fixture for machining thin-walled shell workpieces according to claim 4, characterized in that: A circular plate (67) is fixedly installed on the surface of the extension rod (61) away from the bearing seat (4), and a spring (68) is fixedly installed between the circular plate (67) and the T-shaped plate (62).

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