Conformal assembly tool for thin-wall composite shell with groove

Abstract

The utility model discloses a shape-preserving assembly tool for a thin-wall composite material shell with a groove, which belongs to the technical field of composite material processing, and comprises a sliding block component, a plurality of first sliding blocks and a plurality of second sliding blocks, the sliding block component comprises a plurality of first sliding blocks and a plurality of second sliding blocks, the first sliding blocks and the second sliding blocks can be spliced into a whole cylinder at intervals, a through hole is formed in the whole cylinder, and two ends of the through hole are conical holes; the tensioning gasket set is arranged in the sliding block assembly and comprises two circular gaskets, the two circular gaskets are connected in series through a screw rod assembly, the peripheries of the two circular gaskets are machined into conical surfaces matched with the conical holes, and the distance between the two circular gaskets is adjusted through the screw rod assembly to open the sliding block assembly. And the appearance size of the metal thin-wall part is effectively guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of composite material processing, in particular to an assembly tool for a thin-wall composite material shell. Background Art

[0002] In the 21st century, the engine casing is the main power output structure of various rockets and missile weapons, and is widely used in the aerospace field. To improve product performance, weight control is the key. Therefore, the engine casing is more likely to be formed by thin-walled structural parts. In order to ensure the dimensional accuracy of the thin-walled composite material casing, the main molding method in the existing technology is to wrap the composite fiber around the metal structural parts, and then machine the inner wall of the metal parts and the outer wall of the composite barrel to ensure the dimensional accuracy of the product. With the continuous development and change of the engine casing model structure, the metal inner cavity surface is different and contains complex structures such as grooves, making the molding of composite material casings more and more difficult. Among them, the shape retention of thin-walled parts during the composite molding process and the demolding and disassembly of the supporting core mold tooling have always been technical difficulties in the industry. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a thin-walled composite material shell conformal assembly tool with a groove, which solves the problem of the conformal maintenance of thin-walled parts during the composite molding process and the difficulty in demoulding and disassembly of the supporting core mold tool.

[0004] The purpose of the utility model is achieved as follows: a thin-wall composite material grooved shell conformal assembly tool, comprising:

[0005] The slider assembly includes a plurality of first sliders and a plurality of second sliders, wherein the first sliders and the second sliders can be spaced and spliced ​​to form a full cylinder, and a through hole is formed inside, and both ends of the through hole are tapered holes;

[0006] The tensioning gasket group is arranged inside the slider assembly and includes two circular gaskets. The two circular gaskets are connected in series through a screw assembly. The outer peripheries of the two circular gaskets are processed into conical surfaces that match the conical holes. The slider assembly is expanded by adjusting the distance between the two circular gaskets through the screw assembly.

[0007] As a further limitation of the present invention, it also includes a ring washer arranged at one end of the slider assembly, wherein the ring washer is composed of two half rings that can be spliced ​​into a full circular ring.

[0008] As a further limitation of the present invention, the screw assembly includes a screw with two circular washers connected in series, the screw is threadedly connected to one of the washers, the screw passes through the other washers, and a nut is threadedly connected to the screw on the outer side of the washers.

[0009] Compared with the prior art, the beneficial effects of the present invention are: using the present invention to form a composite material shell effectively ensures the external dimensions of metal thin-walled parts, is easy to assemble, and is convenient and efficient to disassemble and demould. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0011] Figure 1 It is a schematic diagram of the structure of the utility model.

[0012] Figure 2 This is a cross-sectional view of the utility model.

[0013] Figure 3 This is a state diagram used in the present utility model.

[0014] Figure 4 This is a cross-sectional view of the utility model in use.

[0015] Among them, 100 is a slider assembly, 101 is a first slider, 102 is a second slider, 200 is a tensioning gasket set, 201 is a first gasket, 202 is a second gasket, 300 is a ring gasket, 301 is a half ring, 400 is a screw assembly, 401 is a screw, 402 is a nut, 500 is a thin-walled composite shell, and 501 is a groove. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the scope of protection of the utility model in the utility model.

[0017] like Figure 1-2 A thin-wall composite material housing with groove assembly tool is shown, comprising:

[0018] The slider assembly 100 includes a plurality of first sliders 101 and a plurality of second sliders 102. The first sliders 101 and the second sliders 102 can be spaced apart and spliced ​​to form a full cylinder, and a through hole is formed inside, and both ends of the through hole are tapered holes;

[0019] The tensioning gasket set 200 is arranged inside the slider assembly 100, and includes two circular gaskets, namely a first gasket 201 and a second gasket 202. The first gasket 201 and the second gasket 202 are connected in series through a screw assembly 400. The outer peripheries of the first gasket 201 and the second gasket 202 are processed into conical surfaces that match the conical holes. The distance between the first gasket 201 and the second gasket 202 is adjusted by the screw assembly 400 to expand the slider assembly 100.

[0020] The ring washer 300 is disposed at one end of the slider assembly 100 and is composed of two half rings 301 that can be spliced ​​into a full ring.

[0021] Specifically, in this embodiment, a total of four first sliders 101 and four second sliders 102 are used. The size of the first slider 101 is larger than that of the second slider 102. The outer surface of the whole cylinder formed by the first slider 101 and the second slider 102 can be fully supported on the inner wall of the metal part; the tensioning gasket group 200 plays a role in supporting the first slider 101 and the second slider 102; the ring gasket 300 is placed in the step groove at the bottom of the thin-walled metal part of the product to support the shape of the groove 501 of the thin-walled metal part

[0022] Furthermore, the screw assembly 400 includes a screw 401 connected in series with a first gasket 201 and a second gasket 202 , the screw 401 is threadedly connected to the second gasket 202 , the screw 401 penetrates the first gasket 201 , and a nut 402 is threadedly connected to the screw 401 on the outer side of the first gasket 201 .

[0023] Specifically, the screw rod 401 is an M10 screw rod 401 , and the nut 402 is also an M10 nut 402 .

[0024] When this embodiment is installed and used, Figure 3-4As shown, first install the ring gasket 300 into the bottom groove 501 of the thin-walled composite material shell 500, then use the M10 screw 401 to screw into the M10 threaded hole in the center of the second gasket 202, and then place the M10 screw 401 and the second gasket 202 connected as one on the upper side of the semi-ring 301 gasket 300 (the second gasket 202 is facing the taper direction), and then sequentially place each first slider 101 and the second slider 102 around the periphery of the M10 screw 401 and place them into the thin-walled metal cavity at intervals, adjust the positions of the first slider 101 and the second slider 102 and simultaneously The second gasket 202 is driven by the M10 screw 401 to be inserted into the tapered steps at the bottom of the first slider 101 and the second slider 102, and finally the first gasket 201 is inserted into the upper part of the M10 screw 401 (the first gasket 201 is oriented in the taper direction), and the M10 nut 402 is screwed into the upper end of the first gasket 201 along the M10 screw 401, and the M10 nut 402 drives the tightening gasket group 200 to tighten toward each other, thereby driving the first slider 101 and the second slider 102 to press against the inner cavity of the metal thin-walled part to the outside. At this point, the installation of the utility model is completed.

[0025] During demoulding and disassembly of this embodiment, first loosen the M10 nut 402 to separate it from the first gasket 201 and the M10 screw 401, lightly tap and vibrate the M10 screw 401 downward to make the second gasket 202 separate from the first slider 101 and the second slider 102 and fall to the bottom, then lightly pry the first gasket 201 to separate it from the first slider 101 and the second slider 102, the first slider 101 and the second slider 102 will disperse and separate from each other, so that the first gasket 201, the first slider 101, the second slider 102, the second gasket 202, the M10 screw 401 and the half ring 301 pad 300 can be withdrawn from the inner cavity of the thin-walled metal part in turn, and the demoulding and disassembly of the utility model is completed.

[0026] The utility model adopts a block-type first slider 101 and a second slider 102, and there is a space gap between the mating surfaces of the sliders, which can be easily dispersed and removed after the tension gasket group 200 is separated; the M10 screw 401 nut 402 is used to pull the tension gasket group 200 to support the first slider 101 and the second slider 102, rather than using a supporting core rod to support the first slider 101 and the second slider 102, which can avoid the difficulty in installation and disassembly caused by the large-area contact of the core rod to support the first slider 101 and the second slider 102, and greatly improve the installation and disassembly efficiency; the outer surface of the first slider 101 and the second slider 102 is completely in contact with the inner cavity of the thin-walled metal part, and the outer shape of the semi-ring 301 pad 300 is completely in contact with the bottom groove of the thin-walled metal part. After the installation of the utility model is completed, it can play a reliable supporting role for the thin-walled metal part, and can effectively ensure the outer dimensions of the thin-walled metal part during the product molding process.

[0027] The above embodiments are only used to help understand the method and core idea of ​​the utility model. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made to the utility model without departing from the principle of the utility model, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A conformal assembly tool for a thin-walled composite material housing with a groove, characterized in that: include: The slider assembly (100) comprises a plurality of first sliders (101) and a plurality of second sliders (102), wherein the first sliders (101) and the second sliders (102) can be spliced ​​to form a full cylinder at intervals, and a through hole is formed inside, and both ends of the through hole are tapered holes; The tensioning gasket group (200) is arranged inside the slider assembly (100) and comprises two circular gaskets. The two circular gaskets are connected in series via a screw assembly (400). The outer circumferences of the two circular gaskets are processed into conical surfaces that match the conical holes. The slider assembly (100) is expanded by adjusting the distance between the two circular gaskets via the screw assembly (400).

2. The conformal assembly tool for a thin-walled composite material housing with grooves according to claim 1, characterized in that: It also includes a ring washer (300) arranged at one end of the slider assembly (100), wherein the ring washer (300) is composed of two half rings (301) which can be spliced ​​into a full circular ring.

3. A conformal assembly tool for a thin-walled composite material housing with grooves according to claim 1 or 2, characterized in that: The screw assembly (400) comprises a screw (401) connected in series with two circular washers, the screw (401) being threadedly connected to one of the washers, the screw (401) passing through the other washers, and a nut (402) being threadedly connected to the screw (401) on the outer side of the washers.

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