Production clamp for large thin-wall parts

Abstract

The utility model belongs to the technical field of clamps, and particularly relates to a production clamp for large thin-wall parts, which comprises a fixed mechanism, a movable mechanism and a sealing cover, the fixed mechanism comprises a chassis, a support column, movable grooves and a threaded connection end, the support column is vertically arranged on the chassis, the movable grooves are uniformly distributed on the side wall of the support column, and the threaded connection end is connected with the movable grooves. A threaded connecting end is arranged at the tail end of the supporting column; the movable mechanism is arranged in the movable groove, the movable groove comprises a movable frame, clamping grooves and springs, the movable frame is installed in the movable groove, the clamping grooves which are evenly distributed are formed in the positions, located on the inner side of the movable groove, of the movable frame, and the springs are arranged in the clamping grooves; the sealing cover is installed on the threaded connection end, a movable mechanism is arranged in the movable groove, a spring is arranged in the movable mechanism, the inner wall of the large thin-wall part can be evenly and elastically supported, deformation of the side thin wall of the large thin-wall part is avoided, the movable mechanism is convenient to disassemble and assemble, and the clamp is convenient to disassemble, assemble and maintain.

Description

Technical Field

[0001] The utility model relates to the technical field of fixtures, and specifically relates to a production fixture for large thin-walled parts. Background Technique

[0002] For the commonly used fixtures for thin-walled sleeve parts, the clamping principle is to utilize the elastic deformation of an expansion mandrel. The material for manufacturing the expansion mandrel of the fixture is 65Mn. After heat treatment, its deformation cannot be controlled, resulting in a low finished product rate, high processing costs, and a short service life of the finished fixture. After long-term use, due to the release of internal stress, the expansion mandrel deforms, leading to a decrease in the accuracy of the original fixture and even scrapping.

[0003] Patent No. CN201420571916.8 discloses a fixture for machining thin-walled sleeve parts, which has a fixed seat connected to the main shaft. The fixed seat has a central hole. There is also a moving cone sleeve with an inner hole. The moving cone sleeve is composed of a reduced-diameter cylindrical section at the front and back and a conical section in the middle. The rear cylindrical section of the moving cone sleeve is inserted into the equal-diameter central hole of the fixed seat. Wedge-shaped expansion blocks matching the taper are arranged on the outer periphery of the conical part of the moving cone sleeve. A circular ring pad is placed between the bottom edge of the wedge-shaped expansion block and the fixed seat. The front cylindrical section of the moving cone sleeve is sleeved with a gland connected to the fixed seat. Spring pressing pieces for pressing the end parts of the wedge-shaped expansion blocks inward are arranged at the front end of the fixed seat and on the gland. There is a connecting rod connected to the inner pull rod of the main shaft. The connecting rod passes through the central hole of the fixed seat and is fixed to the moving cone sleeve.

[0004] When the above fixture is in use, it cannot uniformly elastically support the inner wall of large thin-walled parts, easily causing deformation of the side thin walls of large thin-walled parts, and it is inconvenient to disassemble and assemble the moving mechanism and to disassemble, assemble and maintain the fixture. Content of the Utility Model

[0005] The purpose of this part is to outline some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Simplifications or omissions may be made in this part, as well as in the abstract of the specification and the title of the utility model of this application, to avoid obscuring the purpose of this part, the abstract of the specification and the title of the utility model. However, such simplifications or omissions cannot be used to limit the scope of the utility model.

[0006] In view of the above and / or problems existing in the existing production fixtures for thin-walled parts, the present utility model is proposed.

[0007] Therefore, the purpose of the present utility model is to provide a production fixture for large thin-walled parts, which can uniformly elastically support the inner wall of large thin-walled parts, avoid deformation of the side thin walls of large thin-walled parts, facilitate the disassembly and assembly of the moving mechanism, and is convenient for the disassembly, assembly and maintenance of the fixture.

[0008] To solve the above technical problems, according to one aspect of the present utility model, the present utility model provides the following technical solutions:

[0009] A production fixture for large thin-walled parts, which includes:

[0010] A fixing mechanism, including a chassis, support columns, movable grooves and threaded connection ends. The support columns are vertically arranged on the chassis. Uniformly distributed movable grooves are opened on the side walls of the support columns, and threaded connection ends are arranged at the ends of the support columns;

[0011] A movable mechanism is arranged in the movable groove. The movable groove includes a movable frame, clamping grooves and springs. The movable frame is installed in the movable groove. Uniformly distributed clamping grooves are opened at the position of the movable frame on the inner side of the movable groove, and springs are arranged in the clamping grooves;

[0012] A cover is installed on the threaded connection end.

[0013] As a preferred scheme of a production fixture for large thin-walled parts according to the present utility model, wherein: one side of the movable frame outside the movable groove is arc-shaped, and a chamfer is arranged at one end of the movable frame located at the threaded connection end.

[0014] As a preferred scheme of a production fixture for large thin-walled parts according to the present utility model, wherein: internal threads are arranged inside the cover, and the cover is connected to the threaded connection end through the internal threads.

[0015] As a preferred scheme of a production fixture for large thin-walled parts according to the present utility model, wherein: a rubber pad is arranged outside one side of the movable frame outside the movable groove, and anti-slip lines are arranged on the rubber pad.

[0016] As a preferred scheme of a production fixture for large thin-walled parts according to the present utility model, wherein: uniformly distributed mounting holes are opened on the chassis.

[0017] Compared with the prior art: The present utility model opens a movable groove on the fixing mechanism, and a movable mechanism is arranged in the movable groove. Springs are arranged in the movable mechanism, which can uniformly elastically support the inner wall of large thin-walled parts, avoid the deformation of the side thin walls of large thin-walled parts, facilitate the disassembly and assembly of the movable mechanism, and facilitate the disassembly, assembly and maintenance of the fixture. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the present utility model will be described in detail below in conjunction with the drawings and detailed embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts. Among them:

[0019] Figure 1 This is a schematic diagram of the assembly structure of the present utility model;

[0020] Figure 2 This is a schematic diagram of the fixing mechanism structure of the present utility model;

[0021] Figure 3 This is a schematic diagram of the cover structure of the present utility model;

[0022] Figure 4 This is a schematic diagram of the moving mechanism structure of the present utility model;

[0023] Figure 5 This is a schematic diagram of the connection structure between the fixing mechanism and the moving mechanism of the present utility model.

[0024] In the figure: 100 fixing mechanism, 110 chassis, 120 support column, 130 moving slot, 140 threaded connection end, 200 moving mechanism, 210 moving frame, 220 clamping slot, 230 spring, 300 cover. Detailed implementation manners

[0025] To make the above objects, features, and advantages of the present utility model more obvious and understandable, the following will describe in detail the specific implementation manners of the present utility model with reference to the accompanying drawings.

[0026] In the following description, many specific details are set forth to fully understand the present utility model. However, the present utility model can also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific implementation manners disclosed below.

[0027] Secondly, the present utility model will be described in detail with reference to the schematic diagrams. When describing the embodiments of the present utility model in detail, for the convenience of explanation, the cross-sectional views showing the device structure will be enlarged locally not in accordance with the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present utility model herein. In addition, in actual production, three-dimensional spatial dimensions including length, width, and depth should be included.

[0028] To make the purpose, technical solutions, and advantages of the present utility model clearer, the following will further describe in detail the embodiments of the present utility model with reference to the accompanying drawings.

[0029] The present utility model provides a production fixture for large thin-walled parts, which can uniformly and elastically support the inner wall of large thin-walled parts, avoid the deformation of the side thin walls of large thin-walled parts, facilitate the disassembly and assembly of the moving mechanism, and facilitate the disassembly, assembly, and maintenance of the fixture. Please refer to Figures 1-5 , including: a fixing mechanism 100, a moving mechanism 200, and a cover 300;

[0030] The fixing mechanism 100 includes a chassis 110, a support column 120, a movable slot 130, and a threaded connection end 140. The support column 120 is vertically arranged on the chassis 110. Uniformly distributed movable slots 130 are formed on the side wall of the support column 120. The threaded connection end 140 is arranged at the end of the support column 120. The chassis 110 is fixed on the workbench. The movable slots 130 in the support column 120 are used to install the movable mechanism 200.

[0031] The movable mechanism 200 is arranged in the movable slot 130. The movable slot 130 includes a movable frame 210, a clamping slot 220, and a spring 230. The movable frame 210 is installed in the movable slot 130. Uniformly distributed clamping slots 220 are formed at the position of the movable frame 210 on the inner side of the movable slot 130. Springs 230 are arranged in the clamping slots 220 respectively. The springs 230 support the movable frame 210 in the clamping slots 220. When the movable frame 210 is subjected to a radial pressure, the movable frame 210 is retracted into the movable slot 130, and the springs 230 elastically support the movable frame 210.

[0032] The cover 300 is installed on the threaded connection end 140. The cover 300 limits the fixing mechanism 100 and the movable mechanism 200 to prevent the movable mechanism 200 from falling off. By opening the cover 300, the movable mechanism 200 can be pulled out of the movable slot 130, which is convenient for the installation, disassembly and maintenance of the movable mechanism 200.

[0033] During specific use, the thin-walled part is sleeved on the outside of the movable mechanism 200 from outside to inside. The inner wall of the thin-walled part extrudes the movable mechanism 200. The movable frame 210 is retracted into the movable slot 130, and the springs 230 elastically support the movable frame 210, so that the movable frame 210 fits the thin-walled part to support the thin-walled part. By opening the cover 300, the movable mechanism 200 can be pulled out of the movable slot 130, which is convenient for the installation, disassembly and maintenance of the movable mechanism 200.

[0034] One side of the movable frame 210 on the outside of the movable slot 130 is arc-shaped. One end of the movable frame 210 located at the threaded connection end 140 is provided with a chamfer, which is convenient for the thin-walled part to be sleeved on the outside of the movable mechanism 200 from outside to inside.

[0035] Internal threads are arranged inside the cover 300. The cover 300 is connected to the threaded connection end 140 through the internal threads, which is convenient for installation and disassembly.

[0036] A rubber pad is arranged on the outside of one side of the movable frame 210 on the outside of the movable slot 130. Anti-slip lines are arranged on the rubber pad to improve the protection effect and anti-slip effect.

[0037] Uniformly distributed mounting holes are formed on the chassis 110 for mounting the chassis 110 on the workbench.

[0038] Although the present utility model has been described above with reference to the embodiments, various improvements can be made thereto and components thereof can be replaced with equivalents without departing from the scope of the present utility model. In particular, as long as there is no structural conflict, the features in the embodiments disclosed by the present utility model can be combined with each other in any way, and the exhaustive description of these combinations is not given in this specification only for the consideration of saving space and resources. Therefore, the present utility model is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A production fixture for large thin-walled parts, characterized in that: include: The fixing mechanism (100) comprises a chassis (110), a support column (120), a movable groove (130) and a threaded connection end (140), wherein the support column (120) is vertically arranged on the chassis (110), the side wall of the support column (120) is provided with evenly distributed movable grooves (130), and the end of the support column (120) is provided with a threaded connection end (140); A movable mechanism (200) is arranged in the movable groove (130), the movable groove (130) comprising a movable frame (210), a clamping groove (220) and a spring (230), the movable frame (210) is installed in the movable groove (130), the movable frame (210) is located inside the movable groove (130) and has uniformly distributed clamping grooves (220), and the clamping grooves (220) are all provided with springs (230); A sealing cover (300) is mounted on the threaded connection end (140).

2. A production fixture for large thin-walled parts according to claim 1, characterized in that: One side of the movable frame (210) located outside the movable groove (130) is arc-shaped, and one end of the movable frame (210) located at the threaded connection end (140) is provided with a chamfer.

3. A production fixture for large thin-walled parts according to claim 1, characterized in that: The sealing cover (300) is provided with an internal thread inside, and the sealing cover (300) is connected to the threaded connection end (140) via the internal thread.

4. A production fixture for large thin-walled parts according to claim 1, characterized in that: A rubber pad is provided on the outside of one side of the movable frame (210) outside the movable groove (130), and anti-slip grooves are provided on the rubber pad.

5. A production fixture for large thin-walled parts according to claim 1, characterized in that: The chassis (110) is provided with evenly distributed mounting holes.

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