Lateral pressing lever oil cylinder

Abstract

The utility model provides a side pressing lever oil cylinder which comprises a cylinder body, a lever body, a first hinge shaft and a second hinge shaft, and a telescopic piston rod is arranged on the cylinder body. A first shaft hole is formed in the cylinder body; a second shaft hole is formed in the upper end of the piston rod A third shaft hole and a fourth shaft hole are formed in the lever body, the first hinge shaft simultaneously penetrates through the first shaft hole and the third shaft hole to enable the lever body to be rotationally connected with the cylinder body, and the second hinge shaft simultaneously penetrates through the second shaft hole and the fourth shaft hole to enable the lever body to be rotationally connected with the piston rod; the lever body is provided with a jacking contact face used for making contact with a workpiece. When the piston rod ascends, the lever body is driven to rotate around the first hinge shaft so that the ejecting contact face can abut against the side face of the workpiece. The whole structure is small, exquisite and compact, the installation direction is the vertical direction, the requirement for the space in the horizontal direction is small in the installation process, the horizontal length of the clamp can be reduced, the clamp can be miniaturized, and the clamp can be installed in the smaller horizontal space.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic cylinder technology, and in particular to a side-pressing lever hydraulic cylinder. Background Technology

[0002] Before machining a workpiece, it is usually necessary to clamp and fix it with a fixture. When it is necessary to machine the upper surface of the workpiece (such as milling the upper surface of the workpiece), since the upper surface of the workpiece is the machining surface, the clamping position of the fixture needs to avoid the upper surface of the workpiece. In this case, the clamping force of the fixture needs to be applied to the side of the workpiece, that is, the workpiece is clamped and fixed by lateral clamping.

[0003] Traditional side clamping methods are usually achieved through hydraulic cylinders. The hydraulic cylinders are arranged horizontally, with the piston rod on the cylinder facing the side of the workpiece. The horizontal extension and retraction of the piston rod on the hydraulic cylinder is used to clamp or loosen the side of the workpiece.

[0004] However, the horizontal arrangement of the hydraulic cylinder occupies a large amount of horizontal space, resulting in a large lateral length of the entire clamp, which is not conducive to the miniaturization of the clamp. Therefore, there is an urgent need to provide a clamping hydraulic cylinder with a compact structure and less horizontal space requirements during installation. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies and provide a side-pressure lever cylinder.

[0006] The purpose of this utility model is achieved through the following technical solution: a side-pressing lever cylinder, including a cylinder body, a lever body, a first hinge shaft, and a second hinge shaft; the cylinder body is provided with a retractable piston rod; the cylinder body is provided with a first shaft hole, and the upper end of the piston rod is provided with a second shaft hole; the lever body is provided with a third shaft hole and a fourth shaft hole, the first hinge shaft passes through both the first shaft hole and the third shaft hole to rotatably connect the lever body and the cylinder body, and the second hinge shaft passes through both the second shaft hole and the fourth shaft hole to rotatably connect the lever body and the piston rod; the lever body is provided with a top-pressing contact surface for contacting the workpiece; when the piston rod rises, it drives the lever body to rotate around the first hinge shaft so that the top-pressing contact surface presses the side of the workpiece against the workpiece.

[0007] In this invention, the cylinder is installed vertically, and the piston rod is arranged vertically and driven to move up and down under hydraulic pressure. When clamping a workpiece, the top-pressure contact surface on the lever body faces the side of the workpiece. The cylinder drives the piston rod upward, causing the lever body to rotate around the first hinge axis in one direction. As the lever body rotates, the top-pressure contact surface on the lever body moves towards the side of the workpiece, pressing against it and thus achieving lateral clamping. When releasing the workpiece, the piston rod moves downward, causing the lever body to rotate around the first hinge axis in the other direction, moving the top-pressure contact surface away from the workpiece and releasing it. This invention has a compact overall structure and a vertical installation direction, requiring less horizontal space during installation. This helps reduce the horizontal length of the clamp, thus facilitating clamp miniaturization and allowing installation in a smaller horizontal space.

[0008] Preferably, the lever body is provided with a top pressing boss, and the top pressing contact surface is provided on the top pressing boss.

[0009] Preferably, the lever body is provided with a guide groove, in which a pressing block is slidably connected, and the pressing contact surface is located at one end of the pressing block; a wedge-shaped groove is provided on one side of the guide groove, in which a wedge block is provided, and one side of the wedge block contacts the side of the pressing block; a threaded hole is provided above the wedge-shaped groove, in which a tightening screw for tightening the wedge block is connected. The sidewall of the wedge-shaped groove is inclined, and the side of the wedge block away from the workpiece contacts the sidewall.

[0010] Preferably, the cross-section of the wedge is a right-angled trapezoid.

[0011] Preferably, the second shaft hole is a waist hole.

[0012] Preferably, the cylinder body is provided with mounting holes.

[0013] Preferably, the cylinder body is provided with a piston chamber, and a piston is provided in the piston chamber, with the lower end of the piston rod connected to the piston.

[0014] The beneficial effects of this utility model are: the overall structure of this utility model is small and compact, and the installation direction is vertical. The horizontal space requirement is small during installation, which is conducive to reducing the horizontal length of the clamp, thereby facilitating the miniaturization of the clamp and enabling the clamp to be installed in a smaller horizontal space. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of this utility model.

[0016] Figure 2 This is a schematic diagram of the structure of Embodiment 1 of this utility model after the lever body is removed.

[0017] Figure 3 This is a cross-sectional view of Embodiment 1 of the present utility model.

[0018] Figure 4 This is a schematic diagram of the lever body in Embodiment 1 of this utility model.

[0019] Figure 5 This is a schematic diagram of the clamping system.

[0020] Figure 6 This is a schematic diagram of the lever body in Embodiment 2 of this utility model.

[0021] Figure 7 This is a top view of the lever body in Embodiment 2 of this utility model.

[0022] Figure 8 for Figure 7 A cross-sectional view along the AA direction.

[0023] In the diagram: 1. Cylinder body, 1-1. Mounting hole, 1-2. Connecting boss, 1-3. First shaft hole, 1-4. Piston chamber, 2. Lever body, 2-1. Third shaft hole, 2-2. Fourth shaft hole, 2-3. Top pressing boss, 2-4. Top pressing contact surface, 2-5. Top pressing block, 2-6. Tightening screw, 2-7. Wedge groove, 2-8. Wedge block, 3. First hinge shaft, 4. Second hinge shaft, 5. Piston rod, 5-1. Second shaft hole, 6. Piston, 7. Base, 8. Bottom support block, 9. Side limiting block, 10. Workpiece. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0025] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0026] Example 1:

[0027] like Figure 1-5As shown, a side-clamping lever cylinder includes a cylinder body 1, a lever body 2, a first hinge shaft 3, and a second hinge shaft 4. The cylinder body 1 is provided with a telescopic piston rod 5. The cylinder body 1 is provided with a first shaft hole 1-3, and the upper end of the piston rod 5 is provided with a second shaft hole 5-1. The lever body 2 is provided with a third shaft hole 2-1 and a fourth shaft hole 2-2. The first hinge shaft 3 passes through both the first shaft hole 1-3 and the third shaft hole 2-1 to rotatably connect the lever body 2 and the cylinder body 1. The second hinge shaft 4 passes through both the second shaft hole 5-1 and the fourth shaft hole 2-2 to rotatably connect the lever body 2 and the piston rod 5. The lever body 2 is provided with a top-pressing contact surface 2-4 for contacting the workpiece 10. When the piston rod 5 rises, it drives the lever body 2 to rotate around the first hinge shaft 3 so that the top-pressing contact surface 2-4 presses the side of the workpiece 10 against it.

[0028] In this invention, the cylinder body 1 is installed vertically, and the piston rod 5 is arranged vertically and driven to move up and down under hydraulic pressure. When clamping the workpiece 10, the pressing contact surface 2-4 on the lever body 2 faces the side of the workpiece 10. The cylinder body 1 drives the piston rod 5 upward, causing the lever body 2 to rotate around the first hinge axis 3 in one direction. As the lever body 2 rotates, the pressing contact surface 2-4 on the lever body 2 moves towards the side of the workpiece 10 and presses against it, thus achieving lateral clamping of the workpiece 10. When releasing the workpiece 10, the piston rod 5 moves downward, causing the lever body 2 to rotate around the first hinge axis 3 in the other direction, moving the pressing contact surface 2-4 away from the workpiece 10, thereby releasing the workpiece 10. The overall structure of this utility model is small and compact, and the installation direction is vertical. The horizontal space requirement is small during installation, which helps to reduce the horizontal length of the clamp, thereby facilitating the miniaturization of the clamp and enabling the clamp to be installed in a smaller horizontal space.

[0029] The cylinder body 1 contains a piston chamber 1-4, and a piston 6 is housed within the piston chamber 1-4. The lower end of the piston rod 5 is connected to the piston 6. Hydraulic oil drives the piston to move up and down, which in turn moves the piston rod up and down.

[0030] The second shaft hole 5-1 is a waist hole. The second hinge shaft 4 passes through the second shaft hole 5-1 and has a certain amount of room to move within the second shaft hole 5-1.

[0031] The cylinder body 1 is provided with a connecting boss 1-2, and the first shaft hole 1-3 is provided on the connecting boss 1-2.

[0032] In this embodiment, the lever body 2 is provided with a pressing boss 2-3, and a pressing contact surface 2-4 is provided on the pressing boss 2-3. The pressing boss 2-3 and the lever body 2 are an integral structure. The pressing contact surface 2-4 is arc-shaped.

[0033] The cylinder block 1 is provided with mounting holes 1-1. The cylinder block 1 can be fixedly installed through the mounting holes 1-1.

[0034] like Figure 5 As shown, a clamping system includes a base 7, a bottom support block 8, a side limiting block 9, and a side clamping lever cylinder. The bottom support block 8, the side limiting block 9, and the side clamping lever cylinder are all mounted on the base 7. The workpiece 10 is placed on the bottom support block 8. The side limiting block 9 and the side clamping lever cylinder are located on both sides of the workpiece 10. The side clamping lever cylinder clamps one side of the workpiece 10 and makes the other side of the workpiece 10 abut against the side limiting block 9, thereby clamping the workpiece 10.

[0035] Example 2:

[0036] like Figures 6 to 8 As shown, the difference between Embodiment 2 and Embodiment 1 is that: the lever body 2 is provided with a guide groove, and a pressing block 2-5 is slidably connected in the guide groove, with a pressing contact surface 2-4 located at one end of the pressing block 2-5; a wedge-shaped groove 2-7 is provided on one side of the guide groove, and a wedge block 2-8 is provided in the wedge-shaped groove 2-7, with one side of the wedge block 2-8 contacting the side of the pressing block 2-5; a threaded hole is provided above the wedge-shaped groove 2-7, and a tightening screw 2-6 for tightening the wedge block 2-8 is connected in the threaded hole. The cross-section of the wedge block 2-8 is a right-angled trapezoid, and the cross-section of the wedge-shaped groove 2-7 is also a right-angled trapezoid. The width of the lower end of the wedge-shaped groove 2-7 is smaller than the width of the upper end of the wedge-shaped groove 2-7.

[0037] The top pressure block 2-5 can be adjusted along the length of the guide groove to adjust the distance by which the top pressure block 2-5 extends beyond the end face of the lever body 2. During adjustment, first loosen the top screw 2-6, causing it to release the wedge block 2-8 and separate it from the top pressure block 2-5. Then move the top pressure block 2-5 to the target position. Finally, tighten the top screw 2-6, causing it to press the wedge block 2-8 firmly against the top pressure block 2-5.

[0038] The remaining structures of Example 2 are the same as those of Example 1.

[0039] This utility model is not limited to the above-described preferred embodiments. Anyone can derive other forms of products under the guidance of this utility model. However, regardless of any changes made in their shape or structure, any technical solution that is the same as or similar to this application falls within the protection scope of this utility model.

Claims

1. A side-clamping lever hydraulic cylinder, characterized in that, The device includes a cylinder body, a lever body, a first hinge shaft, and a second hinge shaft. The cylinder body has a retractable piston rod. The cylinder body has a first shaft hole, and the upper end of the piston rod has a second shaft hole. The lever body has a third shaft hole and a fourth shaft hole. The first hinge shaft passes through both the first and third shaft holes to rotatably connect the lever body to the cylinder body. The second hinge shaft passes through both the second and fourth shaft holes to rotatably connect the lever body to the piston rod. The lever body has a pressing contact surface for contacting the workpiece. When the piston rod rises, it drives the lever body to rotate around the first hinge shaft so that the pressing contact surface presses against the side of the workpiece.

2. The side-clamping lever cylinder according to claim 1, characterized in that, The lever body is provided with a top pressure boss, and the top pressure contact surface is set on the top pressure boss.

3. A side-clamping lever cylinder according to claim 1, characterized in that, The lever body is provided with a guide groove, and a top pressure block is slidably connected in the guide groove. The top pressure contact surface is located at one end of the top pressure block. A wedge-shaped groove is provided on one side of the guide groove, and a wedge block is provided in the wedge-shaped groove. One side of the wedge block contacts the side of the top pressure block. A threaded hole is provided above the wedge-shaped groove, and a tightening screw for tightening the wedge block is connected in the threaded hole.

4. A side-clamping lever cylinder according to claim 3, characterized in that, The cross-section of the wedge is a right-angled trapezoid.

5. A side-clamping lever cylinder according to claim 1, characterized in that, The second shaft hole is a waist hole.

6. A side-clamping lever cylinder according to claim 1, characterized in that, The cylinder body is provided with mounting holes.

7. A side-clamping lever cylinder according to claim 1, characterized in that, The cylinder body is provided with a piston chamber, and a piston is provided in the piston chamber. The lower end of the piston rod is connected to the piston.

Images