Center positioning and fixing device for cylindrical surface or non-cylindrical surface workpiece

Abstract

The utility model provides a center positioning and fixing device for a cylindrical surface or non-cylindrical surface workpiece, and belongs to the technical field of machining. The center positioning and fixing device for the cylindrical surface or non-cylindrical surface workpiece comprises a supporting structure and a positioning and fixing structure. The supporting structure comprises a supporting piece, an annular supporting frame and a workbench, the supporting piece is fixed to the annular supporting frame, and the workbench is fixed to the annular supporting frame; the positioning and fixing structure comprises a positioning piece, a fixing piece and a positioned workpiece, the positioning piece is installed in the middle of the top face of the workbench, the fixing piece is located on the periphery of the positioning piece, the output end of the fixing piece penetrates through the positioning piece in a sliding mode, and the positioned workpiece is arranged on the positioning piece. The positioning device can be conveniently positioned and fixed to the center, can adapt to workpieces of different shapes, can be used more comprehensively, and is higher in positioning efficiency and more convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, and more specifically, to a device for center positioning and fixing of cylindrical or non-cylindrical workpieces. Background Technology

[0002] Machining refers to the process of altering the shape, size, or properties of a workpiece using mechanical equipment. Specifically, it is a manufacturing process that uses mechanical equipment to perform operations such as cutting, shaping, and joining on workpieces to change their shape, size, or properties to meet industrial needs.

[0003] Currently, positioning and fixing are common machining equipment in machining processes. Existing positioning and fixing devices are relatively inefficient when positioning and fixing workpieces, and they are not convenient for fixing cylindrical or non-cylindrical workpieces to the center position. Therefore, it is necessary to propose a center positioning and fixing device for cylindrical or non-cylindrical workpieces to solve the above problems. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a center positioning and fixing device for cylindrical or non-cylindrical workpieces, aiming to improve the problem that existing positioning and fixing devices are relatively inefficient when positioning and fixing workpieces, and are not convenient for fixing cylindrical or non-cylindrical workpieces to the center position.

[0005] This utility model is implemented as follows:

[0006] This utility model provides a center positioning and fixing device for cylindrical or non-cylindrical workpieces, including a support structure and a positioning and fixing structure.

[0007] The support structure includes a support member, an annular support frame, and a worktable. The support member is fixed to the annular support frame, and the worktable is fixed to the annular support frame. The positioning and fixing structure includes a positioning member, a fixing member, and a workpiece to be positioned. The positioning member is installed at the middle position on the top surface of the worktable, and the fixing member is installed on the worktable. The fixing member is located around the positioning member, and the output end of the fixing member slides through the positioning member. The workpiece to be positioned is placed on the positioning member.

[0008] In one embodiment of this utility model, four support members are provided, and the four support members are symmetrically distributed on the annular support frame, the interior of the annular support frame is hollow.

[0009] In one embodiment of this utility model, the support member includes a support cylinder and a pad, the support cylinder is fixed to the annular support frame, and the pad is fixed to the support cylinder.

[0010] In one embodiment of this utility model, the positioning element includes a flange and a sleeve, the sleeve is fixed to the flange, the flange has a nail hole inside, and the sleeve has a through hole inside.

[0011] In one embodiment of this utility model, the nail holes are circumferentially distributed on the flange, the through holes are circumferentially distributed on the sleeve, and the workpiece to be positioned is located inside the sleeve.

[0012] In one embodiment of this utility model, four fixing members are provided, and the four fixing members are symmetrically distributed around the positioning member. Each fixing member includes a three-axis cylinder and a bracket. The three-axis cylinder is mounted on the bracket, and the bracket is mounted on the worktable. A positioning rod is installed at the output end of the three-axis cylinder, and the positioning rod slides through the through hole.

[0013] The beneficial effects of this utility model are as follows: This utility model provides a center positioning and fixing device for cylindrical or non-cylindrical workpieces through the above design. In use, the workpiece to be positioned is placed inside the sleeve. At this time, four three-axis cylinders simultaneously drive the positioning rod to extend. The positioning rod can be used to position and fix the workpiece from four different directions. The four three-axis cylinders can work simultaneously, which makes it easy to fix the workpiece to the position that coincides with the center of the flange. At the same time, four cylinders can be driven individually to deal with non-cylindrical workpieces. This makes it easy to position and fix to the center, and can deal with workpieces of different shapes. It is more comprehensive in use, with higher positioning efficiency and more convenient to use. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of the center positioning and fixing device for cylindrical or non-cylindrical workpieces provided in this embodiment of the utility model.

[0016] Figure 2 A partial cross-sectional structural diagram of the center positioning and fixing device for cylindrical or non-cylindrical workpieces provided for an embodiment of this utility model.

[0017] Figure 3 An exploded view of the positioning and fixing structure of the center positioning and fixing device for cylindrical or non-cylindrical workpieces provided in this embodiment of the utility model.

[0018] In the diagram: 100 - Support structure; 110 - Support component; 111 - Support cylinder; 112 - Pad; 120 - Annular support frame; 130 - Worktable; 200 - Positioning and fixing structure; 210 - Positioning component; 211 - Flange; 2111 - Nail hole; 212 - Sleeve; 2121 - Through hole; 230 - Fixing component; 231 - Three-axis cylinder; 232 - Bracket; 233 - Positioning rod; 240 - Workpiece to be positioned. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Example

[0020] Please see Figures 1-3 This utility model provides a technical solution: a device for center positioning and fixing of cylindrical or non-cylindrical workpieces, including a support structure 100 and a positioning and fixing structure 200.

[0021] Please see Figure 1 and Figure 2 The support structure 100 includes a support member 110, an annular support frame 120, and a worktable 130. The support member 110 is fixed to the annular support frame 120, and the worktable 130 is fixed on the annular support frame 120.

[0022] Four support members 110 are provided, and the four support members 110 are symmetrically distributed on the annular support frame 120. The interior of the annular support frame 120 is hollow. Each support member 110 includes a support cylinder 111 and a pad 112. The support cylinder 111 is fixed to the annular support frame 120, and the pad 112 is fixed to the support cylinder 111. Here, the support member 110 is used to support the entire device. At the same time, the hollow annular support frame 120 can reduce the overall weight and make it easier to move.

[0023] Please see Figures 1-3 The positioning and fixing structure 200 includes a positioning element 210, a fixing element 230, and a workpiece 240 to be positioned. The positioning element 210 is installed at the middle position of the top surface of the worktable 130. The fixing element 230 is installed on the worktable 130 and is located around the positioning element 210. The output end of the fixing element 230 slides through the positioning element 210, and the workpiece 240 to be positioned is placed on the positioning element 210.

[0024] The positioning component 210 includes a flange 211 and a sleeve 212. The sleeve 212 is fixed to the flange 211. The flange 211 has nail holes 2111 inside, and the sleeve 212 has through holes 2121 inside. The nail holes 2111 are circumferentially distributed on the flange 211, and the through holes 2121 are circumferentially distributed on the sleeve 212. The workpiece 240 to be positioned is located inside the sleeve 212. The nail holes 2111 are used for bolts to pass through, so as to facilitate installation on the workbench 130. The through holes 2121 are used for the positioning rod 233 to move back and forth.

[0025] Four fixing components 230 are provided, symmetrically distributed around the positioning component 210. Each fixing component 230 includes a three-axis cylinder 231 and a bracket 232. The three-axis cylinder 231 is mounted on the bracket 232, which is mounted on the worktable 130. A positioning rod 233 is installed at the output end of the three-axis cylinder 231, and the positioning rod 233 slides through the through hole 2121. The three-axis cylinder 231 can drive the positioning rod 233 to move back and forth, thereby simultaneously positioning and fixing the workpiece 240 from four directions, aligning its center with the center of the flange 211. It should be noted that when using the four three-axis cylinders 231, for cylindrical workpieces with regular shapes, the four cylinders 231 can work simultaneously. For symmetrical or asymmetrical parts, the four cylinders 231 can work independently. The air pressure of the cylinders 231 can be controlled, and the extension stroke of each positioning rod 233 is controlled according to the air pressure in the air circuit, thereby ensuring that the positioned workpiece 240 is in the center position. For irregularly shaped workpieces, if the pressure in the pressure connection pipe of one cylinder 231 increases, the pressure can be released or maintained through the air circuit control, thereby controlling the cylinder 231 to stop moving to avoid damaging the workpiece. This ensures that the irregularly shaped workpiece will not be pushed off course due to a protruding part, thus making it more versatile and convenient to use.

[0026] Specifically, the working principle of this device for center positioning and fixing of cylindrical or non-cylindrical workpieces is as follows: During use, the workpiece 240 to be positioned is placed inside the sleeve 212. At this time, four three-axis cylinders 231 simultaneously drive the positioning rods 233 to extend. The positioning rods 233 can be used to position and fix the workpiece 240 from four different directions. The four three-axis cylinders 231 can work simultaneously, thus facilitating the fixing of the workpiece 240 to the position coinciding with the center of the flange 211. Alternatively, each cylinder can be driven individually to handle non-cylindrical workpieces. This allows for convenient center positioning and fixation, and can handle workpieces of different shapes, providing more comprehensive positioning, higher positioning efficiency, and greater ease of use.

[0027] It should be noted that the specific model and specifications of the three-axis cylinder 231 need to be selected and determined according to the actual specifications of the device. The specific selection and calculation method adopts the existing technology in this field, so it will not be described in detail here.

[0028] The power supply and operating principle of the three-axis cylinder 231 are clear to those skilled in the art and will not be described in detail here.

[0029] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A center positioning fixing device for cylindrical or non-cylindrical workpieces, comprising a support structure (100) and a positioning fixing structure (200) mounted on the support structure (100), characterized in that, the support structure (100) comprises a support piece (110), an annular support frame (120) and a workbench (130), the support piece (110) is fixed with the annular support frame (120), and the workbench (130) is fixed on the annular support frame (120); the positioning fixing structure (200) comprises a positioning piece (210), a fixing piece (230) and a positioned workpiece (240), the positioning piece (210) is mounted in the middle position of the top surface of the workbench (130), the fixing piece (230) is mounted on the workbench (130), the fixing piece (230) is located around the positioning piece (210), the output end of the fixing piece (230) slides through the positioning piece (210), and the positioned workpiece (240) is placed on the positioning piece (210).

2. The center positioning and fixing device for cylindrical or non-cylindrical workpiece according to claim 1, characterized in that, The support piece (110) is provided with four support pieces (110), which are symmetrically distributed on the annular support frame (120), and the inside of the annular support frame (120) is hollow.

3. The center positioning fixture for cylindrical or non-cylindrical workpieces of claim 1, wherein, The support piece (110) comprises a support cylinder (111) and a backing plate (112), the support cylinder (111) is fixed with the annular support frame (120), and the backing plate (112) is fixed with the support cylinder (111).

4. The center positioning fixture for cylindrical or non-cylindrical workpieces of claim 1, wherein, The positioning piece (210) comprises a flange plate (211) and a sleeve (212), the sleeve (212) is fixed with the flange plate (211), the inside of the flange plate (211) is provided with a pin hole (2111), and the inside of the sleeve (212) is provided with a through hole (2121).

5. A center positioning fixture for cylindrical or non-cylindrical workpieces according to claim 4, wherein, The pin holes (2111) are circumferentially distributed on the flange plate (211), the through holes (2121) are circumferentially distributed on the sleeve (212), and the positioned workpiece (240) is located in the inside of the sleeve (212).

6. A center positioning fixture for cylindrical or non-cylindrical workpieces according to claim 4, wherein, The fixing piece (230) is provided with four fixing pieces (230), which are symmetrically distributed around the positioning piece (210), the fixing piece (230) comprises a three-axis air cylinder (231) and a bracket (232), the three-axis air cylinder (231) is mounted on the bracket (232), the bracket (232) is mounted on the workbench (130), the output end of the three-axis air cylinder (231) is provided with a positioning rod (233), and the positioning rod (233) slides through the through hole (2121).

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