Hinge type pressing plate clamping device suitable for machining
The design of the hinged clamping device solves the problem of unstable clamping of large-area thin workpieces during machining, achieving reliable clamping and smooth cutting of the workpiece, and improving machining efficiency and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YTO LUOYANG WIT TOOLS & EQUIP
- Filing Date
- 2025-03-05
- Publication Date
- 2026-04-28
AI Technical Summary
In machining, workpieces with large areas and thin thickness are prone to deformation and unstable clamping due to clamping force, cutting force and structural limitations, which affects the stability of machining dimensions and surface finish.
A hinged pressure plate clamping device is adopted, which evenly distributes the clamping force through levers. A spherical shoulder nut and a conical washer are used to prevent the pressure plate from rotating, ensuring that the workpiece is clamped vertically. The adjustable support prevents the hinge bolt from bending, thus achieving reliable clamping.
It improves the stability and efficiency of workpiece processing, reduces the labor intensity of operators, and ensures the safety and stability of processing.
Smart Images
Figure CN224169267U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of machining and relates to a clamp, and more particularly to a hinged pressure plate clamping device suitable for machining. Background Technology
[0002] As is well known, fixtures are frequently used to fix workpieces during machining processes such as milling and drilling in machining centers. However, for some workpieces with large machining areas, thin thickness, and excessive overhang, deformation or unstable clamping may occur during machining due to issues such as tool deflection, clamping force, cutting force, and limitations of the workpiece's own structure. This can ultimately lead to unstable machining dimensions, poor surface finish, and tool marks.
[0003] To effectively solve the above problems and ensure good contact with the workpiece surface, a hinged clamping device suitable for machining centers is provided. This is especially convenient when the operator has difficulty accessing the workpiece's clamping point. It distributes the clamping force evenly across a pair of clamping plates via levers, ultimately pressing the workpiece vertically against the support surface. An adjusting support is installed in the long slot at the tail of each movable clamping plate, effectively preventing the support force generated by the plate's rotation. Simultaneously, a conical washer is added between the spherical shoulder nut and the plate surface. This prevents the hinge bolt from bending under stress when the workpiece tilts due to changes in workpiece height, ensuring reliable clamping and effectively preventing workpiece slippage during machining. Utility Model Content
[0004] The purpose of this utility model is to provide a hinged pressure plate clamping device that is compact in structure, easy to operate, quick to load and unload, and safe and stable in processing, suitable for mechanical processing.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is: a hinged pressure plate clamping device suitable for machining, comprising: a T-shaped seat, a cylindrical pin, a first pin shaft, a first hinge bolt, a lever, a welding machine body, a first anti-loosening hexagonal thin nut, a first adjusting support, a first movable pressure plate, a first compression spring, a first conical washer, a first spherical shoulder nut, a first support, a workpiece, a second support, a second conical washer, a second spherical shoulder nut, a second compression spring, a second movable pressure plate, a second adjusting support, a second anti-loosening hexagonal thin nut, a second pin shaft, and a second hinge bolt; characterized in that: the bottom of the T-shaped seat is suspended in the inner cavity of the welding machine body, and the pin hole in the lever is fixed with a cylindrical pin; The first and second hinge bolts are vertically installed in the round holes in the concave grooves on both sides of the lever, and fixed with the first and second pins. Then, the first and second compression springs are sequentially fitted on, with the bottom ends of the first and second compression springs fitting against the upper surface of the welding machine body. The first and second supports are fixedly installed on the upper surface of the welding machine body. The first and second adjusting supports are vertically fixed in the threaded holes on the upper surface of the welding machine body. Finally, they are locked with the first anti-loosening hexagonal thin nut on the first adjusting support and the second anti-loosening hexagonal thin nut on the second adjusting support.
[0006] The upper threads of the first and second hinge bolts pass through the waist-shaped circular holes provided on the first and second movable pressure plates, respectively; the threads of the first and second hinge bolts are respectively screwed with a first spherical shoulder nut and a second spherical shoulder nut, the spherical surface of which is in contact with the conical surface of the first and second conical washers.
[0007] The long groove surface below the tail of the first and second movable pressure plates is in contact with the ball head on the upper part of the first and second adjusting supports.
[0008] The first movable pressure plate and the second movable pressure plate are respectively fitted with a first hinge bolt and a second hinge bolt, each equipped with a first conical washer and a second conical washer.
[0009] The spherical surfaces of the first spherical shoulder nut and the second spherical shoulder nut respectively fit against the conical surfaces of the first conical washer and the second conical washer.
[0010] After adopting the above technical solution, this utility model has the following beneficial effects: This utility model is suitable for processing workpieces with large processing area and thin thickness. It has a compact structure, is easy to operate, and is safe and reliable to use. In the process of clamping and releasing the workpiece, a hinged clamping plate is used, which has a high degree of automation, ensures cutting stability and safety, improves workpiece processing efficiency, and reduces the operator's labor intensity. Attached Figure Description
[0011] Figure 1This is a cross-sectional structural diagram of a hinged pressure plate clamping device suitable for machining, according to the present invention.
[0012] In the diagram: 1. T-shaped seat, 2. Cylindrical pin, 3. First pin, 4. First hinge bolt, 5. Lever, 6. Welding machine body, 7. First anti-loosening hexagonal thin nut, 8. First adjusting support, 9. First moving pressure plate, 10. First compression spring, 11. First conical washer, 12. First spherical shoulder nut, 13. First support, 14. Workpiece, 15. Second support, 16. Second conical washer, 17. Second spherical shoulder nut, 18. Second compression spring, 19. Second moving pressure plate, 20. Second adjusting support, 21. Second anti-loosening hexagonal thin nut, 22. Second pin, 23. Second hinge bolt. Detailed Implementation
[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments. For example... Figure 1 As shown, a hinged clamping device suitable for machining includes: a T-shaped seat 1, a cylindrical pin 2, a first pin shaft 3, a first hinge bolt 4, a lever 5, a welding machine body 6, a first anti-loosening hexagonal thin nut 7, a first adjusting support 8, a first movable pressure plate 9, a first compression spring 10, a first conical washer 11, a first spherical shoulder nut 12, a first support 13, a workpiece 14, a second support 15, a second conical washer 16, a second spherical shoulder nut 17, a second compression spring 18, a second movable pressure plate 19, a second adjusting support 20, a second anti-loosening hexagonal thin nut 21, a second pin shaft 22, and a second hinge bolt 23.
[0014] In this embodiment, the T-shaped seat 1 is first suspended in the inner cavity of the welding machine body 6 using several hexagonal head screws. A rectangular through slot is provided in the middle of the lever 5 and passes through the upper part of the T-shaped seat 1. The cylindrical pin 2 is installed in the round hole of the rectangular through slot in the middle of the T-shaped seat 1 and the lever 5. The first hinge bolt 4 and the second hinge bolt 23 are respectively installed in the grooves provided on both sides of the lever 5. The first pin 3 and the second pin 22 are respectively installed in the round holes in the first hinge bolt 4, the second hinge bolt 23 and the grooves on both sides of the lever 5. The first compression spring 10 and the second compression spring 18 pass through the first hinge bolt 4 and the second hinge bolt 23 until the other end is in contact with the upper surface of the welding machine body 6. The first support 13 and the second support 15 are fixedly installed on the upper surface of the welding machine body 6 using several hexagonal head screws. The first adjusting support 8 and the second adjusting support 20 are vertically fixed at the threaded holes on the upper surface of the welding machine body 6. The first anti-loosening hexagonal thin nut 7 and the second anti-loosening hexagonal thin nut 21 lock the first adjusting support 8 and the second adjusting support 20 respectively. The oblong holes on the first movable pressure plate 9 and the second movable pressure plate 19 pass through the upper threads of the first hinge bolt 4 and the second hinge bolt 23, respectively. The long grooves below the tails of the first hinge bolt 4 and the second hinge bolt 23 are in contact with the ball heads on the upper parts of the first adjusting support 8 and the second adjusting support 20. The flat surfaces of the first conical washer 11 and the second conical washer 16 are respectively fitted onto the first hinge bolt 4 and the second hinge bolt 23 up to the top of the first movable pressure plate 9 and the second movable pressure plate 19. The first spherical shoulder nut 12 and the second spherical shoulder nut 17 are screwed into the threads of the first hinge bolt 4 and the second hinge bolt 23, and their spherical surfaces are in contact with the conical surfaces of the first conical washer 11 and the second conical washer 16.
[0015] The working principle of this utility model is as follows: After placing the workpiece 14 to be processed on the first support 13 and the second support 15, the first moving pressure plate 9 and the second moving pressure plate 19 at the left and right ends are moved horizontally inward respectively. The first spherical shoulder nut 12 or the second spherical shoulder nut 17 at one of the locations is rotated clockwise. The first moving pressure plate 9 and the second moving pressure plate 19 simultaneously begin to be subjected to a downward force and move downward along the waist-shaped circular hole on the two moving pressure plates. The corresponding first compression spring 10 and second compression spring 18 below the first moving pressure plate 9 and the second moving pressure plate 19 are compressed respectively. The force of the first spherical shoulder nut 12 or the second spherical shoulder nut 17 is applied to the lever 5 by the first hinge bolt 4 or the second hinge bolt 23, and the clamping force is evenly distributed to the two moving pressure plates. Finally, the workpiece 14 is vertically pressed onto the first support 13 and the second support 15.
[0016] After processing is completed, the first spherical shoulder nut 12 or the second spherical shoulder nut 17 at one of the locations should be loosened counterclockwise. The first compression spring 10 and the second compression spring 18 under the first moving pressure plate 9 and the second moving pressure plate 19 will rebound, and the two moving pressure plates will automatically return to their original positions, thereby eliminating the pressing state of the first moving pressure plate 9 and the second moving pressure plate 19.
[0017] This utility model has a compact structure, is easy to operate, and is safe and reliable to use. In the process of clamping and releasing the workpiece, it adopts a hinged pressure plate clamping form, which has a high degree of automation, ensures cutting stability and safety, improves workpiece processing efficiency, and reduces the labor intensity of the operator.
[0018] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the entire content of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still make formal modifications to the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. All formal modifications and equivalent substitutions made within the scope of the concept and teaching of this utility model should be included within the scope of protection of this utility model.
Claims
1. A hinged pressure plate clamping device suitable for machining, comprising: T-shaped seat (1), cylindrical pin (2), first pin shaft (3), first hinge bolt (4), lever (5), welding machine body (6), first anti-loosening hexagonal thin nut (7), first adjusting support (8), first moving pressure plate (9), first compression spring (10), first conical washer (11), first spherical shoulder nut (12), first support (13), workpiece (14), second support (15), second conical washer (16), second spherical shoulder nut (17), second compression spring (18), second moving pressure plate (19), second adjusting support (20), second anti-loosening hexagonal thin nut (21), second pin shaft (22), second hinge bolt (23); characterized in that: The bottom of the T-shaped seat (1) is suspended in the inner cavity of the welding machine body (6), and the pin hole in the lever (5) is fixed with a cylindrical pin (2); the first hinge bolt (4) and the second hinge bolt (23) are respectively vertically installed in the round holes in the concave grooves on both sides of the lever (5), and fixed with the first pin (3) and the second pin (22), and then the first compression spring (10) and the second compression spring (18) are successively fitted on, and the bottom ends of the first compression spring (10) and the second compression spring (18) are in contact with the upper surface of the welding machine body (6); the first support (13) and the second support (15) are fixedly installed on the upper surface of the welding machine body (6); the first adjusting support (8) and the second adjusting support (20) are vertically fixed in the threaded holes on the upper surface of the welding machine body (6), and locked with the first anti-loosening hexagonal thin nut (7) on the first adjusting support (8) and the second anti-loosening hexagonal thin nut (21) on the second adjusting support (20).
2. The hinged pressure plate clamping device suitable for machining according to claim 1, characterized in that: The upper threads of the first hinge bolt (4) and the second hinge bolt (23) pass through the waist-shaped round holes provided on the first moving pressure plate (9) and the second moving pressure plate (19), respectively; the threads of the first hinge bolt (4) and the second hinge bolt (23) are respectively screwed with the first spherical shoulder nut (12) and the second spherical shoulder nut (17), and their spherical surfaces are in contact with the conical surfaces of the first conical washer (11) and the second conical washer (16).
3. A hinged pressure plate clamping device suitable for machining according to claim 2, characterized in that: The long groove surface below the tail of the first movable pressure plate (9) and the second movable pressure plate (19) is in contact with the ball head on the upper part of the first adjusting support (8) and the second adjusting support (20).
4. A hinged pressure plate clamping device suitable for machining according to claim 2, characterized in that: The first movable pressure plate (9) and the second movable pressure plate (19) are respectively fitted with a first hinge bolt (4) and a second hinge bolt (23) with a first conical washer (11) and a second conical washer (16).
5. A hinged pressure plate clamping device suitable for machining according to claim 2, characterized in that: The spherical surfaces of the first spherical shoulder nut (12) and the second spherical shoulder nut (17) are respectively in contact with the conical surfaces of the first conical washer (11) and the second conical washer (16).