Thin-walled shells and their machining fixtures

Abstract

This invention relates to the field of thin-walled shell technology, and more particularly to thin-walled shells and their processing fixtures. This solution improves the accuracy and speed of thin-walled shell installation by using connecting flanges and connecting grooves on the thin-walled cylinder for positioning. Furthermore, the first connecting hole on the connecting flange, the second connecting hole on the connecting groove, the fourth connecting hole on the top surface of the thin-walled cylinder, and the fifth connecting hole on the bottom surface of the thin-walled cylinder enable top-end, bottom-end, and circumferential connections of the thin-walled shell, allowing for multi-directional, secure, and uniformly stressed installation. Moreover, the pre-set first, second, fourth, and fifth connecting holes eliminate the need for subsequent reprocessing of the thin-walled shell, allowing for multiple reuses. The ports and openings at both ends of the thin-walled cylinder facilitate the insertion or extension of components into the cylinder. This solution provides convenient positioning and installation of the thin-walled shell, and boasts a high reusability rate.

Description

Technical Field

[0001] This invention relates to the field of thin-walled shell technology, and more particularly to thin-walled shells and their machining fixtures. Background Technology

[0002] Thin-walled shells are a common type of engineering component structure. With the increasing diversity of manufactured products, thin and irregularly shaped shells are often installed by welding or re-drilling holes during the assembly process. This can easily lead to problems such as positioning difficulties, installation difficulties, and uneven stress after installation. Furthermore, it can easily cause the thin-walled shell to be damaged and has poor reusability.

[0003] Based on this, the applicant is considering designing a thin-walled shell that is easy to install, position, and reuse. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the technical problem to be solved by the present invention is: how to provide a thin-walled shell that is easy to install and position and can be reused.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A thin-walled shell, comprising an integrally formed thin-walled cylindrical body, wherein the outer side wall of the thin-walled cylindrical body is provided with a connecting flange protruding and a connecting groove recessed, wherein a first connecting hole is provided in the connecting groove and a second connecting hole is provided on the connecting flange;

[0007] The bottom surface of the thin-walled cylinder is an open port, and the top surface has an opening that communicates with the interior of the thin-walled cylinder. The top surface of the thin-walled cylinder has a fourth connecting hole located around the opening, and the bottom surface of the side wall of the thin-walled cylinder has a fifth connecting hole.

[0008] The working principle and advantages of this technical solution are as follows:

[0009] This solution utilizes connecting flanges and grooves on the thin-walled cylinder for positioning, improving the accuracy and speed of thin-walled shell installation. Furthermore, the first connecting hole in the connecting groove, the second connecting hole in the connecting flange, the fourth connecting hole on the top surface of the thin-walled cylinder, and the fifth connecting hole on the bottom surface of the thin-walled cylinder enable top-end, bottom-end, and circumferential connections of the thin-walled shell, allowing for multi-directional, secure, and evenly distributed installation. The pre-set first, second, fourth, and fifth connecting holes eliminate the need for subsequent reprocessing of the thin-walled shell, allowing for multiple reuses. The ports and openings at both ends of the thin-walled cylinder facilitate the insertion or insertion of components. In summary, this solution provides convenient positioning and installation of the thin-walled shell, with a high reusability rate.

[0010] Furthermore, a positioning recess is provided at the top of the thin-walled cylinder.

[0011] Furthermore, the thin-walled cylindrical body includes a first half-shell and a second half-shell, and the connecting flange is disposed at the connection between the first half-shell and the second half-shell.

[0012] Furthermore, the connecting groove is disposed on the first half-shell, and the positioning recess is disposed on the second half-shell.

[0013] Furthermore, the second connecting hole is opened on one side of the thin-walled cylinder spaced by the connecting flange, and a third connecting hole communicating with the two side walls is also opened on the connecting flange.

[0014] A thin-walled shell machining fixture is used to machine the aforementioned thin-walled shell. It includes a base and a bottom plate. The top side of the bottom plate is detachably connected to the bottom surface of the thin-walled shell, and the bottom side is detachably connected to the top side of the base. A column extending into the interior of the thin-walled shell is fixedly installed on the top side of the base. A lower pressure plate that abuts against the top surface of the thin-walled shell is installed on the top side of the column. An upper pressure plate that abuts against the top surface of the thin-walled shell is spaced above the lower pressure plate. The upper pressure plate is fixedly and detachably connected to the column.

[0015] The working principle and advantages of this thin-walled shell machining fixture are as follows:

[0016] When machining the sidewalls and connecting flanges and grooves of the aforementioned thin-walled cylinder, to ensure machining reliability, it is necessary to ensure that the thin-walled cylinder does not vibrate or shift under cutting forces during machining. However, due to the thin-walled characteristics and weak strength of the thin-walled cylinder, clamping it with ordinary clamping equipment can easily cause excessive deformation of the thin-walled cylinder due to excessive clamping force. After machining, the deformation rebounds when the external force is released, resulting in the machined part failing to meet the technical requirements of the thin-walled cylinder. When using the machining fixture in this solution, the base plate is first connected to the bottom surface of the thin-walled cylinder, and then the base plate and the thin-walled cylinder on it are connected to the top side of the base to ensure reliable positioning of the thin-walled cylinder. The thin-walled cylinder on the base plate is then installed... When the base is in place, the column on the base extends into the thin-walled cylinder, and the lower pressure plate on the top side of the column abuts against the top surface of the thin-walled cylinder. Then, the upper pressure plate is fixedly connected to the column, and the upper pressure plate abuts against the top side of the thin-walled cylinder, so that the top side of the thin-walled cylinder is fastened between the upper and lower pressure blocks. This makes the thin-walled cylinder tensile and fastened. During the production and processing of the thin-walled shell, the cutting force near the lower end of the thin-walled cylinder is transmitted to the base through the base plate, and the cutting force near the upper end of the part is transmitted to the column through the upper and lower pressure blocks, thus ensuring the reliability of production. The thin-walled cylinder is subjected to very little force after clamping, avoiding its deformation, reducing the clamping requirements of the thin-walled cylinder, and improving the clamping reliability of the thin-walled cylinder.

[0017] Furthermore, the base plate has a first clearance hole for the column to pass through, the base plate is detachably connected to the top side of the base by a first positioning bolt, and the base plate is detachably connected to the bottom surface of the thin-walled cylinder by a second positioning bolt.

[0018] Furthermore, a first stud is fixedly connected to the bottom of the column, and a threaded hole is provided on the top surface of the base for threaded connection with the first stud.

[0019] Furthermore, a top rod is provided on the top side of the column, and a second stud is fixedly connected to the bottom surface of the top rod. A threaded hole is provided on the top surface of the column for threaded connection with the second stud.

[0020] Furthermore, the top rod has a threaded hole for threaded connection with the locking bolt, and both the upper pressure plate and the lower pressure plate have a second clearance hole for the locking bolt screw to pass through. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the thin-walled shell according to an embodiment of the present invention. Figure 1 ;

[0022] Figure 2 This is a three-dimensional structural diagram of the thin-walled shell according to an embodiment of the present invention. Figure 2 ;

[0023] Figure 3 This is a three-dimensional structural diagram of the thin-walled shell according to an embodiment of the present invention. Figure 3 ;

[0024] Figure 4 This is a three-dimensional structural diagram of a thin-walled shell machining fixture according to an embodiment of the present invention;

[0025] Figure 5 This is a three-dimensional structural diagram of the base plate according to an embodiment of the present invention;

[0026] Figure 6 This is a three-dimensional structural diagram of the pressure block according to an embodiment of the present invention;

[0027] Figure 7 This is a three-dimensional structural diagram of the connection between the thin-walled shell and the thin-walled shell machining fixture in an embodiment of the present invention;

[0028] Figure 8 for Figure 7 A schematic diagram of the cross-sectional structure;

[0029] In the above figures: 100, thin-walled cylinder; 110, first half-shell; 111, connecting groove; 112, first connecting hole; 120, second half-shell; 121, positioning recess; 130, connecting flange; 131, second connecting hole; 132, third connecting hole; 140, opening; 141, fourth connecting hole; 150, port; 151, fifth connecting hole;

[0030] 200. Machining fixture; 210. Base; 220. Base plate; 221. First clearance hole; 222. First positioning bolt; 223. Second positioning bolt; 230. Column; 231. First stud; 240. Top rod; 241. Second stud; 250. Lower pressure plate; 251. Second clearance hole; 252. Support rod; 260. Upper pressure plate; 270. Locking bolt. Detailed Implementation

[0031] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0032] Refer to together Figures 1-3 This embodiment provides a thin-walled shell, which includes an integrally formed thin-walled cylindrical body 100. The outer side wall of the thin-walled cylindrical body 100 is provided with a connecting flange 130 and a connecting groove 111. A first connecting hole 112 is provided in the connecting groove 111, and a second connecting hole 131 is provided on the connecting flange 130.

[0033] The bottom surface of the thin-walled cylindrical body 100 is an open port 150, and the top surface has an opening 140 that communicates with the interior of the thin-walled cylindrical body 100. The top surface of the thin-walled cylindrical body 100 has a fourth connecting hole 141 located around the opening 140, and the bottom surface of the side wall of the thin-walled cylindrical body 100 has a fifth connecting hole 151.

[0034] In this embodiment, the solution uses the connecting flange 130 and connecting groove 111 on the thin-walled cylinder 100 for positioning, improving the installation accuracy and speed of the thin-walled shell. Furthermore, the first connecting hole 112 on the connecting groove 111, the second connecting hole 131 on the connecting flange 130, the fourth connecting hole 141 on the top surface of the thin-walled cylinder 100, and the fifth connecting hole 151 on the bottom surface of the thin-walled cylinder 100 enable connection at the top, bottom, and circumferential directions of the thin-walled shell, allowing for multi-directional, secure, and uniformly stressed installation. Moreover, the pre-set first connecting hole 112, second connecting hole 131, fourth connecting hole 141, and fifth connecting hole 151 eliminate the need for subsequent reprocessing of the thin-walled shell, allowing for multiple reuses. The ports 150 and openings at both ends of the thin-walled cylinder 100 facilitate the insertion or insertion of components into or into the thin-walled cylinder 100. In summary, this solution provides convenient positioning and installation of the thin-walled shell, with a high reusability rate.

[0035] Preferably, such as Figures 1-3 As shown, the top of the thin-walled cylinder 100 is provided with a positioning recess 121. The positioning recess 121 is a T-shaped recess, which can play a positioning role during installation, and at the same time increase the contact area between the thin-walled cylinder 100 and the installation site, further increasing the firmness of the thin-walled shell after installation.

[0036] Preferably, such as Figures 1-3 As shown, the thin-walled cylindrical body 100 includes a first half-shell 110 and a second half-shell 120. Both the first half-shell 110 and the second half-shell 120 are arc-shaped plates, with the top of the first half-shell 110 being spherical and the bottom of the second half-shell 120 being spherical. A connecting flange 130 is provided at the connection between the first half-shell 110 and the second half-shell 120. Two connecting flanges 130 are provided to increase the strength at the connection between the first half-shell 110 and the second half-shell 120. Specifically, a connecting groove 111 is provided on the first half-shell 110, and a positioning recess 121 is provided on the second half-shell 120. The positioning recess 121 and the connecting groove 111 form a symmetrical recessed positioning, and the two connecting flanges 130 form a symmetrical protruding positioning.

[0037] Preferably, such as Figures 1-3 As shown, the second connecting hole 131 is opened on one side of the connecting flange 130 that is spaced from the thin-walled cylinder 100. The connecting flange 130 is also provided with a third connecting hole 132 that connects the two side walls. The second connecting hole 131 and the third connecting hole 132 are set in different directions on the connecting flange 130, so that the connecting flange 130 can be connected in multiple directions during installation, further improving the firmness of the thin-walled shell after installation.

[0038] Specifically, the thin-walled cylinder 100 has a wall thickness of 8mm, a length of 702mm, and the parallelism of the connecting flanges 130 on both sides is 0.03mm, and the symmetry is 0.05mm.

[0039] Refer to together Figures 1-8 This embodiment also provides a thin-walled shell processing fixture for processing the aforementioned thin-walled shell. It includes a base 210 and a bottom plate 220. The top side of the bottom plate 220 is detachably connected to the bottom surface of the thin-walled cylinder 100, and the bottom side is detachably connected to the top side of the base 210. A column 230 extending into the interior of the thin-walled cylinder 100 is fixedly installed on the top side of the base 210. A lower pressure plate 250 that abuts against the inner top surface of the thin-walled cylinder 100 is provided on the top side of the column 230. An upper pressure plate 260 that abuts against the outer top side of the thin-walled cylinder 100 is provided at intervals above the lower pressure plate 250. The upper pressure plate 260 is fixedly and detachably connected to the column 230.

[0040] In this embodiment, when the thin-walled cylinder 100 is processed on its sidewall and the connecting flange 130 and connecting groove 111, to ensure processing reliability, it is necessary to ensure that the thin-walled cylinder 100 does not vibrate or shift when subjected to cutting force during processing. However, due to the thin-walled characteristics and weak strength of the thin-walled cylinder 100, if it is clamped by ordinary clamping equipment, it is easy to cause excessive deformation of the thin-walled cylinder 100 due to excessive clamping force. After processing, the deformation rebounds when the external force is released, causing the processed part to fail to meet the technical requirements of the thin-walled cylinder 100. When using the processing fixture 200 in this solution, the base plate 220 is first connected to the bottom surface of the thin-walled cylinder 100, and then the base plate 220 and the thin-walled cylinder 100 on it are connected to the top side of the base 210 to ensure reliable positioning of the thin-walled cylinder 100. The thin-walled cylinder 100 on the base plate 220 and the thin-walled cylinder 100 on it are installed on the top side of the base 210. When the base 210 is in place, the column 230 on the base 210 extends into the thin-walled cylinder 100, and the lower pressure plate 250 on the top side of the column 230 abuts against the inner top surface of the thin-walled cylinder 100; then, the upper pressure plate 260 is fixedly connected to the column 230, and the upper pressure plate 260 abuts against the outer top side of the thin-walled cylinder 100, so that the top side of the thin-walled cylinder 100 is fastened between the upper and lower pressure blocks; thereby shaping the thin-walled cylinder 100. When the thin-walled shell is manufactured under tension and fastened, the cutting force near the lower end of the thin-walled cylinder 100 is transmitted to the base 210 through the base plate 220, and the cutting force near the upper end of the part is transmitted to the column 230 through the upper and lower pressure blocks, thereby ensuring the reliability of production. The thin-walled cylinder 100 is subjected to very little force after clamping, avoiding its deformation, reducing the clamping requirements of the thin-walled cylinder 100, and improving the clamping reliability of the thin-walled cylinder 100.

[0041] Preferably, such as Figure 3 , Figure 4 , Figure 5 , Figure 7 as well as Figure 8 As shown, the base plate 220 has a first clearance hole 221 for the column 230 to pass through, which facilitates the base plate 220 to pass through the column 230 and contact the top side of the base 210; the base plate 220 and the base 210 have corresponding screw holes, and are detachably connected to the top side of the base 210 by the first positioning bolt 222; at the same time, the base plate 220 has a screw hole corresponding to the fifth connecting hole 151 on the bottom side of the thin-walled cylinder 100, and the bottom is detachably connected to the bottom surface of the thin-walled cylinder 100 by the second positioning bolt 223; thus realizing the detachable connection between the base plate 220 and the top side of the base 210 and the bottom surface of the thin-walled cylinder 100.

[0042] Preferably, such as Figure 8 As shown, the bottom of the column 230 is fixedly connected to the first stud 231, and the top surface of the base 210 is provided with a threaded hole for threaded connection with the first stud 231, so as to realize the detachable connection between the column 230 and the base 210 and facilitate the replacement of the column 230.

[0043] Preferably, such as Figure 3 and Figure 8 As shown, a top rod 240 is provided on the top side of the column 230, and a second stud 241 is fixedly connected to the bottom surface of the top rod 240. A threaded hole is provided on the top surface of the column 230 for threaded connection with the second stud 241. Through the cooperation between the second stud 241 on the top rod 240 and the threaded hole on the column 230, the top rod 240 and the column 230 can be detachably connected, and the height of the column 230 and its upper and lower pressure plates 250 can be adjusted according to the actual situation.

[0044] Preferably, the push rod 240 has a threaded hole for threaded connection with the locking bolt 270, and both the upper pressure plate 260 and the lower pressure plate 250 have a second clearance hole 251 for the locking bolt 270 to pass through; the locking bolt 270 and the second clearance hole 251 passing through the upper pressure plate 260 and the lower pressure plate 250 are then threadedly connected to the push rod 240. When the locking bolt 270 rotates downward, it clamps and fixes the upper pressure plate 260 and the lower pressure plate 250 on the top side of the thin-walled cylinder 100, and allows the upper pressure plate 260, The lower pressure plate 250 and the top side of the thin-walled cylinder 100 are fixedly connected to the column 230. Specifically, the top surface of the top rod 240 is an arc-shaped top surface, and the bottom side of the lower pressure plate 250 is an arc-shaped recess corresponding to the arc-shaped top surface, so as to increase the contact area between the upper pressure plate 260 and the top rod 240. More specifically, the top side of 250 is fixedly connected to the support rod 252, which contacts the inner top surface of the thin-walled cylinder 100. The support rod 252 adopts a planar moving steel ball bolt to compensate for the possible tilt of the inner top surface of the thin-walled cylinder 100 in the free state.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A thin-walled shell, characterized in that, The thin-walled shell includes an integrally formed thin-walled cylindrical body. The outer side wall of the thin-walled cylindrical body is provided with a connecting flange protruding outward and a connecting groove recessed outward. A first connecting hole is provided in the connecting groove, and a second connecting hole is provided on the connecting flange. The bottom surface of the thin-walled cylinder is an open port, and the top surface has an opening that communicates with the interior of the thin-walled cylinder. The top surface of the thin-walled cylinder has a fourth connecting hole located around the opening, and the bottom surface of the side wall of the thin-walled cylinder has a fifth connecting hole. The top of the thin-walled cylinder is provided with a positioning recess; The thin-walled cylindrical body includes a first half-shell and a second half-shell, and the connecting flange is disposed at the connection between the first half-shell and the second half-shell. The connecting groove is disposed on the first half-shell, and the positioning recess is disposed on the second half-shell; the positioning recess and the connecting groove form a symmetrical recessed positioning, and the two connecting flanges form a symmetrical protruding positioning.

2. The thin-walled shell as described in claim 1, characterized in that, The second connecting hole is opened on one side of the thin-walled cylinder spaced by the connecting flange, and a third connecting hole connecting the two side walls is also opened on the connecting flange.

3. A thin-walled shell machining fixture, used for machining the thin-walled shell as described in any one of claims 1 to 2, characterized in that, The system includes a base and a bottom plate. The top side of the bottom plate is detachably connected to the bottom surface of the thin-walled cylinder, and the bottom side is detachably connected to the top side of the base. A column extending into the interior of the thin-walled cylinder is fixedly installed on the top side of the base. A lower pressure plate that abuts against the top surface of the thin-walled cylinder is installed on the top side of the column. An upper pressure plate that abuts against the top surface of the thin-walled cylinder is spaced above the lower pressure plate. The upper pressure plate is fixedly and detachably connected to the column. A support rod that contacts the top surface of the thin-walled cylinder is fixedly connected to the top side of the lower pressure plate. The support rod uses a planar moving steel ball bolt. A top rod is provided on the top side of the column, and a second stud is fixedly connected to the bottom surface of the top rod. A threaded hole is opened on the top surface of the column to be threadedly connected to the second stud. The top rod has a threaded hole for threaded connection with the locking bolt, and both the upper pressure plate and the lower pressure plate have a second clearance hole for the locking bolt screw to pass through.

4. The thin-walled shell machining fixture as described in claim 3, characterized in that, The base plate has a first clearance hole for the column to pass through. The base plate is detachably connected to the top side of the base by a first positioning bolt. The base plate is detachably connected to the bottom surface of the thin-walled cylinder by a second positioning bolt.

5. The thin-walled shell machining fixture as described in claim 3, characterized in that, The bottom of the column is fixedly connected to a first stud, and the top surface of the base is provided with a threaded hole that is threadedly connected to the first stud.

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