Pressing plate for turnover tool
By designing a pressure plate for the flipping fixture, the problems of cumbersome operation and uneven force in the traditional clamping mechanism were solved, achieving stable clamping and efficient production of thin-walled box-shaped workpieces, and reducing costs.
Patent Information
- Application Number
- CN202520217958.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-11
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2035-02-11
AI Technical Summary
Traditional four-point bolt clamping mechanisms are cumbersome to operate and difficult to maintain consistent clamping force when clamping complex thin-walled box-shaped workpieces made of special materials, resulting in workpiece deformation and unstable quality.
Design a pressure plate for flipping tooling. The outer contour consists of arc segments and curved segments. The curved segments have a concave structure, forming two arc segment fixing points. Combined with waist-shaped grooves and weight-reducing grooves, it can achieve uniform force distribution and rapid loading and unloading.
It achieves stable clamping of thin-walled box-shaped workpieces, avoids deformation, improves production efficiency and workpiece quality, and reduces material costs.
Smart Images
Figure CN223656865U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a turnover frock technical field, concretely relates to a turnover frock is with pressing plate. BACKGROUND
[0002] In the industrial manufacturing and assembly process, the turnover frock is the key equipment for fixing and positioning the processed or assembled object. For the clamped workpiece of the box structure, the traditional four sets of bolt assembly compression mode has significant limitations.
[0003] Firstly, the traditional four-point bolt compression mechanism not only needs the operator to manually adjust each bolt one by one to achieve appropriate compression strength, but also has complicated steps in the disassembly process, consumes a lot of time, and reduces production efficiency. More importantly, due to human factors, the compression strength between points is difficult to keep consistent, especially when dealing with pressure-sensitive materials, the pressure difference at different positions may cause local stress concentration, and then cause the box to deform, affecting product quality and precision. INVENTION CONTENTS
[0004] The utility model intends to provide a turnover frock is with pressing plate, to solve the technical problem that the existing turnover frock is pressed tightly when using unreasonable structure and is easy to cause clamping operation to be complicated, and the quality of the clamped workpiece of the box structure is easy to be damaged.
[0005] The basic scheme provided by the utility model is: a turnover frock is with pressing plate, the outline of the pressing plate is composed of an arc segment and a curved segment, and the arc segment and the curved segment are respectively symmetrical to the pressing plate center line;The curved segment is concave structure, and the protruding direction of the arc segment is concave;The concave protrusion of the curved segment is symmetrically formed at least two first arc segments, wherein the protruding direction of the first arc segment is opposite to the protruding direction of the arc segment;The pressing plate is provided with a waist type groove, and the long axis of the waist type groove is located on the pressing plate center line.
[0006] The working principle and advantages of the utility model are:
[0007] Compared with existing technologies, this solution, based on the workpiece's box-shaped structure and special properties, and combined with a flipping fixture adapted for processing the workpiece, features a specially designed clamping pressure plate. Optimization is achieved in two aspects: balanced clamping force and altered pressure point positions. The pressure plate's curved section contacts the workpiece, with at least two arc-shaped segments forming at least two fixing points on the workpiece's outer flange. When two pressure plates from this solution are used simultaneously on opposite sides of the workpiece, stable clamping and uniform force distribution are achieved, avoiding the risk of workpiece deformation due to uneven clamping force. Furthermore, the application of this pressure plate completely changes the clamping method for thin-walled box-shaped workpieces within the outer flange. It changes from the existing method of directly clamping the thin-walled box plate to externally clamping the flanges at both ends. During clamping, the force acts on the workpiece flanges, not directly on the thin-walled box, thus exerting no pressure on the thin wall and avoiding the potential deformation of the thin-walled box during workpiece clamping.
[0008] The concave structure design of the curved section forms the two workpiece pressure points at both ends of the protrusion, and the shape formed at the bottom of the concave section provides clearance space, so as to achieve no interference with the workpiece during the clamping stage. Even if there is slight displacement during the workpiece flipping process, no other points other than the working pressure points will contact the workpiece surface, avoiding damage to the workpiece surface by the pressure plate itself and ensuring workpiece quality. At the same time, the arc design can reduce weight, reduce material usage, and reduce costs.
[0009] The waist-shaped groove design allows for quick loading and unloading of workpieces by pulling the pressure plate back and forth, improving the speed of installation and disassembly, simplifying the operation process, and ensuring the safety and reliability of clamping, thus meeting the needs of modern manufacturing for efficient and precise production.
[0010] The curved section structure is compatible with the waist-shaped groove structure, while taking into account the manufacturing cost and stress factors of the pressure plate, ensuring that the pressure plate is not affected while reducing weight and cost.
[0011] This solution features a simple clamping plate structure and convenient operation, making it particularly suitable for clamping applications of box-shaped workpieces with thin-walled inner walls and outer flanges, ensuring stable clamping and workpiece quality. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the structure of a pressure plate for a flipping tool provided in an embodiment of the present utility model;
[0013] Figure 2 This is a front view of a pressure plate for a flipping tool provided in an embodiment of the present utility model;
[0014] Figure 3 This is a schematic diagram showing the dimensions of a pressure plate for a flipping fixture provided in an embodiment of the present invention.
[0015] The markings in the accompanying drawings include: arc segment 1, large arc segment 11, small arc segment 12, second straight line segment 13, curved segment 2, first curved segment 21, first arc segment 211, second arc segment 212, first straight line segment 22, second arc segment 23, third arc segment 231, fourth arc segment 232, waist-shaped groove 3, and weight-reducing groove 4. Detailed Implementation
[0016] The following detailed explanation illustrates the specific implementation methods:
[0017] The basic implementation examples are as follows: Figure 1 As shown: A pressure plate for a flipping fixture, the outer contour of the pressure plate is composed of arc segments and curved segments, and the arc segments and curved segments are symmetrical about the center line of the pressure plate, the center line of the pressure plate being symmetrical about the center line of the center line of the pressure plate. Figure 2 As shown by the dashed line.
[0018] like Figure 2 As shown, the arc segment includes a large arc segment and two smaller arc segments and a second straight line segment symmetrically located on both sides of the large arc segment, wherein the arc segment is connected to the curved segment by two symmetrical second straight line segments. In this embodiment, the radius of the large arc segment is 190-210mm, the radius of the smaller arc segment is 45-55mm, preferably 200mm, and the radius of the smaller arc segments is 50mm. This design is compatible with the curved segment, waist-shaped groove, and weight-reducing groove of the pressure plate, taking into account both weight reduction and cost reduction as well as stress factors.
[0019] The curved section has a concave structure and protrudes in the direction of the arc segment ( Figure 2 (As indicated by the arrow) A concave shape; the concave protrusion of the curved section symmetrically forms at least two first arc-shaped segments at both ends, wherein the protrusion direction of the first arc-shaped segment is opposite to that of the arc segment; the first arc-shaped segment is composed of a first arc segment and a second arc segment, wherein the first arc segment is away from the bottom of the concave shape. The radii of the first arc segment and the second arc segment are different. The radius of the first arc segment is larger than the radius of the second arc segment. In this embodiment, the radius of the first arc segment is 26 mm, and the radius of the second arc segment is 20 mm.
[0020] The concave bottom of the curved section includes a first straight segment and two second arc-shaped segments symmetrically located on both sides of the straight segment. Each second arc-shaped segment includes an adjacent third and fourth arc-shaped segment, with the third arc-shaped segment closer to the concave protrusion. The third and fourth arc-shaped segments curve in opposite directions, with the third arc-shaped segment protruding in the direction of the arc-shaped protrusion. The third and fourth arc-shaped segments have the same radius, and the arc length of the third arc-shaped segment is greater than that of the fourth arc-shaped segment. In this embodiment, the radii of the third and fourth arc-shaped segments are 50 mm.
[0021] The pressure plate has a waist-shaped groove on its center line, such as Figure 3 As shown, the external dimensions and position of the waist-shaped groove can be determined by... Figure 3h3, h4, and w3 are determined, wherein h3 can be 42-47mm, h4 can be 58-62mm, and w3 can be 30-33mm. In this embodiment, h3 is preferably 45mm, h4 is preferably 60mm, and w3 is preferably 31mm, which can be adapted to conventional general-purpose bolts, and the size of h4 can meet the appropriate requirements for fastening and disassembly movement.
[0022] The pressure plate has several weight-reducing grooves symmetrically formed with waist-shaped grooves. In this embodiment, there are two circular weight-reducing grooves with a radius of 40mm; their positions are determined by... Figure 3 As shown, w4 and h5 are determined, where w4 can be 168-175mm, preferably 170mm; and h5 can be 67-73mm, preferably 70mm. Due to the small size and irregular shape of the overall pressure plate, the position design of the weight reduction groove takes into account both weight reduction and cost reduction as well as stress requirements, so as not to affect the stress of the surrounding structure while reducing weight.
[0023] In practical use, the pressure plate is assembled onto the bolts of the flipping fixture through the waist-shaped groove. The pressure plate can be moved along the long axis of the waist-shaped groove to adjust its position. Since the waist-shaped groove limits the pressure plate in the short axis direction, the two fixed points formed by the two first arc segments of the bending section of the pressure plate can be adjusted into position simultaneously without offset. After the position is adjusted, the bolt fittings are used to lock it. In this way, the pressure plate can be used to adjust the workpiece at multiple points on one side at the same time, and the force is even.
[0024] When used in conjunction with a flipping fixture to clamp a thin-walled box-shaped workpiece with an outer flange, two pressure plates of this design are used. The two pressure plates are located on opposite sides of the workpiece, forming a clamping space between them. In use, the pressure plates are moved away from the clamping space by the waist-shaped grooves of the pressure plates and the bolts on the flipping fixture, allowing the workpiece to be moved aside. After the workpiece is hoisted into the clamping space, the pressure plates are moved along the direction close to the clamping space. When the pressure plates contact the workpiece, they can simultaneously press two areas on the flange surface of the workpiece. Tighten the bolts to fix the pressure plates and achieve upper positioning of the workpiece.
[0025] This embodiment provides a clamping plate for a flipping fixture. Based on the box-shaped structure and special properties of the workpiece, and combined with a flipping fixture adapted to the workpiece processing, this solution features a specially designed clamping plate. Optimization is achieved in two aspects: balanced clamping force and altered pressure point positions. The curved section of the clamping plate contacts the workpiece, and at least two arc-shaped segments of the curved section form at least two fixing points on the outer flange of the workpiece. When two clamping plates of this solution are used simultaneously on opposite sides of the workpiece, stable clamping and uniform force distribution can be achieved, avoiding the risk of workpiece deformation due to uneven clamping force. Furthermore, the application of this clamping plate completely changes the clamping method for thin-walled box-shaped workpieces within the outer flange. It changes from the existing method of directly clamping the thin-walled plate of the box to externally clamping the flanges at both ends. During clamping, the force acts on the workpiece flanges, not directly on the thin-walled box, thus exerting no pressure on the thin wall and avoiding the potential deformation of the thin-walled box when clamping the workpiece.
[0026] The concave structure design of the curved section forms the two workpiece pressure points at both ends of the protrusion, and the shape formed at the bottom of the concave section provides clearance space, so as to achieve no interference with the workpiece during the clamping stage. Even if there is slight displacement during the workpiece flipping process, no other points other than the working pressure points will contact the workpiece surface, avoiding damage to the workpiece surface by the pressure plate itself and ensuring workpiece quality. At the same time, the arc design can reduce weight, reduce material usage, and reduce costs.
[0027] The waist-shaped groove design allows for quick loading and unloading of workpieces by pulling the pressure plate back and forth, improving the speed of installation and disassembly, simplifying the operation process, and ensuring the safety and reliability of clamping, thus meeting the needs of modern manufacturing for efficient and precise production.
[0028] The curved section structure is compatible with the waist-shaped groove structure, while taking into account the manufacturing cost and stress factors of the pressure plate, ensuring that the pressure plate is not affected while reducing weight and cost.
[0029] This solution features a simple clamping plate structure and convenient operation, making it particularly suitable for clamping applications of box-shaped workpieces with thin-walled inner walls and outer flanges, ensuring stable clamping and workpiece quality.
[0030] The above descriptions are merely embodiments of this utility model. Commonly known structures and characteristics are not described in detail here. Those skilled in the art are aware of all common technical knowledge in the field prior to the application date or priority date, are knowledgeable of all existing technologies in that field, and possess the ability to apply conventional experimental methods prior to that date. Therefore, those skilled in the art can, based on the guidance provided in this application, improve and implement this solution in conjunction with their own capabilities. Typical known structures or methods should not be obstacles for those skilled in the art to implement this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent.
Claims
1. A pressure plate for a flipping fixture, characterized in that, The outer contour of the pressure plate is composed of arc segments and curved segments, and the arc segments and curved segments are symmetrical about the center line of the pressure plate; the curved segments have a concave structure and are recessed in the direction of the arc segment protrusion; at least two first arc segments are symmetrically formed at both ends of the concave protrusion of the curved segments, wherein the protrusion direction of the first arc segments is opposite to the protrusion direction of the arc segments; the pressure plate has a waist-shaped groove, wherein the long axis of the waist-shaped groove is located on the center line of the pressure plate.
2. The pressure plate for a flipping fixture according to claim 1, characterized in that, The first arc segment is composed of a first arc segment and a second arc segment, wherein the first arc segment is far from the concave bottom.
3. A pressure plate for a flipping fixture according to claim 2, characterized in that, The first arc segment and the second arc segment have different radii.
4. A pressure plate for a flipping fixture according to claim 3, characterized in that, The radius of the first arc segment is greater than the radius of the second arc segment.
5. A pressure plate for a flipping fixture according to claim 1, characterized in that, The concave bottom of the curved section includes a first straight segment and two second arc segments symmetrically located on both sides of the first straight segment, wherein the second arc segments include adjacent third and fourth arc segments, and the third arc segment is close to the concave protrusion end.
6. A pressure plate for a flipping fixture according to claim 5, characterized in that, The third and fourth arc segments bend in opposite directions.
7. A pressure plate for a flipping fixture according to claim 6, characterized in that, The third arc segment protrudes in the direction of the arc segment.
8. A pressure plate for a flipping fixture according to claim 6, characterized in that, The third and fourth arc segments have the same radius, and the arc length of the third arc segment is greater than that of the fourth arc segment.
9. A pressure plate for a flipping fixture according to claim 1, characterized in that, The arc segment includes a large arc segment and smaller arc segments and a second straight line segment symmetrically located on both sides of the large arc segment.
10. A pressure plate for a flipping fixture according to claim 1, characterized in that, The pressure plate has several weight-reducing grooves symmetrically arranged in a waist-shaped groove.