Clamping mechanism for cylindrical workpiece

Abstract

According to the clamping mechanism for the cylindrical workpiece, a telescopic part, a center piece and a jacking piece are arranged in the cylindrical workpiece, the center piece is arranged along the central axis of the cylindrical workpiece, the telescopic part is fixedly connected with the center piece, and the other end of the telescopic piece can move in a telescopic mode and drives the jacking piece to move in the radial direction; the multiple telescopic parts and the multiple jacking pieces are arranged in a one-to-one correspondence and matched mode, the circle of the telescopic parts and the circle of the jacking pieces are arranged along the central axis of the cylindrical workpiece, and when the outer wall of the cylindrical workpiece is machined, all the jacking pieces are kept in the jacking state so as to fix the cylindrical workpiece; when the inner wall of the cylindrical workpiece is machined and the cutting knife is close to the position of the jacking piece, the jacking piece shrinks to facilitate cutting machining. No matter whether the outer wall or the inner wall of the workpiece is cut, the clamp does not need to be disassembled for overall receding, so that the process is simple and efficient, and the cutting precision is high.

Description

Technical Field

[0001] The present application relates to the field of workpiece processing, and in particular to a clamping mechanism for cylindrical workpieces. Background Art

[0002] In the field of machining, finishing the inner and outer cylindrical surfaces of conventional cylindrical workpieces is an essential and critical step. Currently, these two machining operations are considered independent units, each requiring different clamping methods. This two-clamping approach increases the complexity and time cost of the production process. Each change in clamping method involves disassembly and reinstallation of the fixture, as well as repositioning of the workpiece. These steps are not only time-consuming and labor-intensive, but can also introduce new error sources due to multiple clamping, affecting the overall accuracy of the final product. Utility Model Content

[0003] In view of this, the present application proposes a clamping mechanism for a cylindrical workpiece, which can achieve complete and uninterrupted processing of the workpiece by arranging a clamp inside the cylindrical workpiece.

[0004] According to one aspect of the present application, a clamping mechanism for a cylindrical workpiece is provided, comprising: a telescopic part, a center piece and a tightening part; the fixed end of the telescopic part is fixedly connected to the center piece, the telescopic end of the telescopic part is fixedly connected to the tightening part, and the telescopic part can drive the tightening part to move; the center piece is suitable for being set in a round tool, and is characterized in that it comprises: a center piece, a tightening part and a telescopic part; at the axial center position of the cylindrical workpiece, the number of the tightening parts and the telescopic part is at least four, and the number is equal, and the plurality of the tightening parts and the telescopic parts are evenly arranged along the outer circumference of the center piece; when the tightening part is in a retracted state, the outer side of the tightening part is suitable for having a preset distance with the inner wall of the cylindrical workpiece; when the tightening part is in an extended state, the outer side of the tightening part is suitable for abutting against the inner wall of the cylindrical workpiece.

[0005] In one possible implementation, the center piece includes a center plate and a center axis; the center plate is a plate-like structure symmetrical about the center axis, and a plurality of protrusions are extended from the periphery of the center plate; the center axis is a columnar structure; the center axis is arranged at the bottom of the center plate, and the center axis is arranged at the center position of the center plate.

[0006] In one possible implementation, the plurality of telescopic parts are arranged around the periphery of the central axis, and the inner sides of the telescopic parts are fixedly connected to the central axis.

[0007] In a possible implementation, the pressing member is disposed on the top of the protrusion, and the number of the protrusions is equal to the number of the pressing members, and they are disposed in a one-to-one correspondence.

[0008] In one possible implementation, the number of the tightening members and the number of the telescopic parts are both 6.

[0009] In one possible implementation, the telescopic part includes a telescopic cylinder and a connecting rod; one end of the telescopic cylinder is fixedly connected to the central axis, the other end of the telescopic cylinder is connected to the connecting rod, and the connecting rod is fixedly connected to the bottom of the tightening member.

[0010] In one possible implementation, the connecting rod is an "L"-shaped structure, and the top of the connecting rod is screwed and fixed to the tightening member.

[0011] In one possible implementation, a gasket is provided on the outer periphery of the tightening member.

[0012] In one possible implementation, the ratio of the preset distance to the radius of the cylindrical workpiece is 1:10-1:8; and the ratio of the length of the pressing member to the radius of the cylindrical workpiece is 1:4-1:3.

[0013] In one possible implementation, an outer peripheral end of the tightening member can be telescopically fine-tuned.

[0014] The beneficial effects of the present application are as follows: a telescopic part, a center part and a tightening part are provided inside the cylindrical workpiece, the center part is provided along the central axis of the cylindrical workpiece, the telescopic part and the center part are fixedly connected, the other end of the telescopic part can be telescopically moved, and drives the tightening part to move radially, thereby tightening the cylindrical workpiece. There are multiple such telescopic parts and tightening parts, and they are arranged in a one-to-one correspondence. A circle is provided along the central axis of the cylindrical workpiece. When the outer wall of the cylindrical workpiece is processed, all the tightening parts remain in a tightening state to fix the cylindrical workpiece. When the inner wall of the cylindrical workpiece is processed, when the cutting knife approaches the position of the tightening part, the tightening part contracts to facilitate cutting. A clamping mechanism for a cylindrical workpiece according to the present application can clamp the cylindrical workpiece. Regardless of whether the outer wall or the inner wall of the workpiece is cut, there is no need to disassemble the entire fixture to make way, making the process simple and efficient, and the cutting accuracy is high.

[0015] Other features and aspects of the present application will become apparent from the following detailed description of exemplary embodiments with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments, features, and aspects of the application and, together with the description, serve to explain the principles of the application.

[0017] Figure 1 A top view of a clamping mechanism for a cylindrical workpiece according to an embodiment of the present application is shown;

[0018] Figure 2 A schematic cross-sectional structure diagram of a clamping mechanism for a cylindrical workpiece according to an embodiment of the present application is shown. DETAILED DESCRIPTION

[0019] Various exemplary embodiments, features, and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise indicated.

[0020] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application or simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0022] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0023] In addition, numerous specific details are provided in the detailed description below to better illustrate the present application. Those skilled in the art will appreciate that the present application can be practiced without certain specific details. In some instances, methods, means, components, and circuits well known to those skilled in the art are not described in detail in order to highlight the main purpose of the present application.

[0024] As shown in the figure, the clamping mechanism for a cylindrical workpiece includes a telescopic portion 100 , a center piece 200 and a tightening piece 300 .

[0025] The fixed end of the telescopic part 100 is fixedly connected to the center piece 200, and the telescopic end of the telescopic part 100 is fixedly connected to the tightening part 300, and the telescopic part 100 can drive the tightening part 300 to move; the center piece 200 is suitable for being set in a round mold, and is characterized in that it includes: a center piece 200, a tightening part 300 and a telescopic part 100; at the axial center position of the cylindrical workpiece 400, the number of tightening parts 300 and the telescopic part 100 is at least four, and the number is equal, and the multiple tightening parts 300 and the telescopic part 100 are evenly arranged along the outer periphery of the center piece 200; when the tightening part 300 is in a retracted state, the outer side of the tightening part 300 is suitable for having a preset distance with the inner wall of the cylindrical workpiece 400; when the tightening part 300 is in an extended state, the outer side of the tightening part 300 is suitable for abutting against the inner wall of the cylindrical workpiece 400.

[0026] During the cutting process of the carbon fiber cylindrical workpiece 400, the first step requires cutting the outer cylindrical surface. During the cutting process, the six tightening parts 300 tighten the inner cylindrical surface and cut the outer cylindrical surface at the same time; the second step requires cutting the inner cylindrical surface. During the cutting process, when cutting near the corresponding tightening part 300, the tightening part 300 retracts, and the other five clamps remain clamped to maintain the position of the workpiece 400 unchanged. After the processing of this area is completed, the corresponding tightening part 300 is extended again, and this cycle is repeated until the processing is completed.

[0027] like Figure 1 The top view of the cylindrical workpiece 400 shows a circular structure, where the position close to the center of the circular structure is the inner circumference, and the position of the original center of the circular structure is the outer circumference. Figure 2 The top shown is the top of the application and the bottom is the bottom of the application.

[0028] In one possible implementation, the center piece 200 includes a center plate 210 and a center axis 220; the center plate 210 is a plate-like structure symmetrical to the center axis 220, and a plurality of protrusions are extended from the periphery of the center plate 210; the center axis 220 is a columnar structure; the center axis 220 is arranged at the bottom of the center plate 210, and the center axis 220 is arranged at the center position of the center plate 210.

[0029] In one possible implementation, a plurality of telescopic parts 100 are disposed around the periphery of the central shaft 220 , and the inner sides of the telescopic parts 100 are fixedly connected to the central shaft 220 .

[0030] In one possible implementation, the pressing member 300 is disposed on the top of the protrusion, and the number of the protrusions is equal to the number of the pressing members 300 and they are disposed in a one-to-one correspondence.

[0031] In one possible implementation, the number of the tightening members 300 and the number of the telescopic parts 100 are both 6. When the number of the tightening members 300 and the number of the telescopic parts 100 is 6, the angle between two adjacent tightening members 300 is 60°. Similarly, the angle between two adjacent telescopic parts 100 is 60°.

[0032] Furthermore, the pressing member 300 and the telescopic portion 100 are disposed in a one-to-one correspondence, and the top projection of the pressing member 300 can completely cover the top projection of the telescopic portion 100 .

[0033] In one possible implementation, the telescopic portion 100 includes a telescopic cylinder and a connecting rod. One end of the telescopic cylinder is fixedly connected to the central shaft 220, and the other end is connected to the connecting rod. The connecting rod is fixedly connected to the bottom of the tensioning member 300. In one possible implementation, the connecting rod has an L-shaped structure, with the top of the connecting rod screwed to the tensioning member 300. The connecting rod is used to transmit power from the telescopic cylinder to the tensioning member 300. The telescopic cylinder generates a horizontal force, which drives the tensioning member 300 to move horizontally through the connecting rod.

[0034] In one possible implementation, a gasket is provided on the outer periphery of the clamping member 300. The gasket is arc-shaped, and the side in contact with the workpiece 400 fits against the inner wall of the cylindrical workpiece 400, thereby increasing stability during clamping.

[0035] In one possible implementation, the ratio of the preset distance to the radius of the cylindrical workpiece 400 is 1:10-1:8, and the ratio of the length of the tensioning member 300 to the radius of the cylindrical workpiece 400 is 1:4-1:3. The retractable distance of the tensioning member 300 is appropriately controlled to ensure the stability of the entire device without affecting cutting.

[0036] In one possible implementation, the outer end of the pressing member 300 can be telescoped and fine-tuned, and a cylinder is also provided on the top of the pressing member 300, which can be driven by the cylinder to achieve fine-tuning and telescoping of the pressing member 300.

[0037] It should be noted that although this application describes a cylindrical workpiece clamping mechanism as an example, those skilled in the art will appreciate that this application is not limited thereto. In fact, users can flexibly set various parameters based on their personal preferences and / or actual application scenarios, as long as the design is reasonable.

[0038] In this way, a telescopic part, a center part and a tightening part are provided inside the cylindrical workpiece, and the center part is provided along the central axis of the cylindrical workpiece. The telescopic part and the center part are fixedly connected, and the other end of the telescopic part can be telescopically moved and drive the tightening part to move radially, thereby tightening the cylindrical workpiece. There are multiple such telescopic parts and tightening parts, and they are arranged in a one-to-one correspondence. A circle is provided along the central axis of the cylindrical workpiece. When the outer wall of the cylindrical workpiece is processed, all the tightening parts remain in a tightening state to fix the cylindrical workpiece. When the inner wall of the cylindrical workpiece is processed, when the cutting knife approaches the position of the tightening part, the tightening part contracts to facilitate cutting. According to a clamping mechanism for a cylindrical workpiece of the present application, the cylindrical workpiece can be clamped. Regardless of whether the outer wall or the inner wall of the workpiece is cut, there is no need to disassemble the entire fixture to make way, making the process simple and efficient, and the cutting accuracy is high.

[0039] The embodiments of the present application have been described above. The above description is illustrative and not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is selected to best explain the principles of the embodiments, their practical applications, or improvements to the technology in the market, or to enable other persons skilled in the art to understand the embodiments disclosed herein.

Claims

1. A clamping mechanism for a cylindrical workpiece, characterized in that: include: Telescopic part, center piece and top tightening piece; The fixed end of the telescopic part is fixedly connected to the central part, and the telescopic end of the telescopic part is fixedly connected to the pressing part, so that the telescopic part can drive the pressing part to move; The center piece is suitable for being set in a round tool, and is characterized by comprising: a center piece, a tightening piece, and a telescopic portion; the number of the tightening pieces and the telescopic portions is at least four, and the number is equal, and the plurality of the tightening pieces and the telescopic portions are evenly arranged along the outer circumference of the center piece; When the pressing member is in a retracted state, the outer side of the pressing member is adapted to have a preset distance from the inner wall of the cylindrical workpiece; When the pressing member is in an extended state, the outer side of the pressing member is suitable for being in contact with the inner wall of the cylindrical workpiece.

2. The cylindrical workpiece clamping mechanism according to claim 1, wherein: The center piece includes a center plate and a center shaft; The central plate is a plate-shaped structure symmetrical about the central axis, and a plurality of protrusions are provided on the periphery of the central plate; The central axis is a columnar structure; The central shaft is arranged at the bottom of the central plate, and the central shaft is arranged at the center position of the central plate.

3. The cylindrical workpiece clamping mechanism according to claim 2, wherein: The plurality of telescopic parts are arranged around the outer circumference of the central shaft, and the inner sides of the telescopic parts are fixedly connected to the central shaft.

4. The clamping mechanism for a cylindrical workpiece according to claim 2, wherein: The pressing members are arranged on the tops of the protrusions. The number of the protrusions is equal to the number of the pressing members, and they are arranged in a one-to-one correspondence.

5. The clamping mechanism for a cylindrical workpiece according to any one of claims 1 to 4, characterized in that: The number of the tightening members and the number of the telescopic parts are both 6.

6. The cylindrical workpiece clamping mechanism according to claim 2, wherein: The telescopic part includes a telescopic cylinder and a connecting rod; One end of the telescopic cylinder is fixedly connected to the central shaft, the other end of the telescopic cylinder is connected to the connecting rod, and the connecting rod is fixedly connected to the bottom of the tightening member.

7. The cylindrical workpiece clamping mechanism according to claim 6, wherein: The connecting rod is an "L"-shaped structure, and the top of the connecting rod is screwed and fixed to the tightening member.

8. The clamping mechanism for a cylindrical workpiece according to any one of claims 1 to 4, characterized in that: A gasket is provided on the outer periphery of the tightening member.

9. The clamping mechanism for a cylindrical workpiece according to any one of claims 1 to 4, characterized in that: The ratio of the preset distance to the radius of the cylindrical workpiece is: 1:10-1:8; The ratio of the length of the pressing member to the radius of the cylindrical workpiece is 1:4-1:

3.

10. The cylindrical workpiece clamping mechanism according to any one of claims 1 to 4, characterized in that: An outer circumferential end of the tightening member can be telescopically fine-tuned.

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