Double-station hydraulic clamp for pressing plate type workpieces

Abstract

The utility model provides a double-station hydraulic clamp for pressing plate type workpieces. The double-station hydraulic clamp is low in cost and high in machining efficiency. The clamping device comprises a bottom plate which is provided with a vertical plate, and is characterized in that the vertical plate is provided with a longitudinal clamping mechanism and a transverse clamping mechanism, the longitudinal clamping mechanism comprises a positioning block and a lever oil cylinder, the positioning block is provided with a positioning pin, a piston rod of the lever oil cylinder is rotatably connected with one end of a lever pressing plate, and the lever pressing plate is fixedly connected with the vertical plate. The lever pressing plate is installed on the hinge frame, the hinge frame is installed on the upper surface of the lever oil cylinder, and the bottom of the other end of the lever oil cylinder and the top face of the positioning block form longitudinal clamping of a workpiece.

Description

Technical Field

[0001] The present invention relates to the technical field of vertical machining of workpieces, and specifically relates to a double-station hydraulic fixture for pressing plate workpieces. Background Art

[0002] Pressing plate workpieces are applied to engineering machinery and have high precision requirements. Fixtures must be used for fixation during the machining process. Although the original fixture can meet the clamping requirements, the structure of the fixture is very complex, resulting in high manufacturing costs, and the clamping process is cumbersome and complex, resulting in low machining efficiency. Summary of the Invention

[0003] Aiming at the disadvantages of the existing fixture with a very complex structure, resulting in high manufacturing costs and low machining efficiency, the utility model provides a double-station hydraulic fixture for pressing plate workpieces, which has low costs and high machining efficiency.

[0004] A double-station hydraulic fixture for pressing plate workpieces, which includes a bottom plate, and a vertical plate is installed on the bottom plate. It is characterized in that: a longitudinal clamping mechanism and a transverse clamping mechanism are installed on the vertical plate. The longitudinal pressing mechanism includes a positioning block and a lever oil cylinder. A positioning pin is installed on the positioning block. The piston rod of the lever oil cylinder is rotatably connected to one end of a lever pressing plate. The lever pressing plate is installed on a hinge bracket. The hinge bracket is installed on the upper surface of the lever oil cylinder. The other end bottom of the lever oil cylinder and the top surface of the positioning block form the longitudinal clamping of the workpiece. The transverse clamping mechanism includes a single-acting cylinder and a positioning column. The extending direction of the piston rod of the single-acting cylinder is opposite to the direction of the positioning column. The positioning column is installed on the side surface of a vertical block. The vertical block is installed on the vertical plate. The top end of the piston rod of the single-acting cylinder and the top end of the positioning column form the transverse clamping of the workpiece.

[0005] It further has the following characteristics:

[0006] There are two of the longitudinal clamping mechanism and the transverse clamping mechanism;

[0007] The two transverse clamping mechanisms share the same vertical block, and the two positioning columns of the two transverse clamping mechanisms are respectively installed on the two side surfaces of the vertical block;

[0008] The diameter of the positioning pin is equal to the inner diameter of the hole in the workpiece;

[0009] The horizontal distance between the center of the positioning pin and the top end of the positioning column is equal to the distance from the center of the hole in the workpiece to the side surface of the workpiece;

[0010] An oil distributor is installed on one side of the bottom plate, and an oil circuit is provided in the bottom plate and the vertical plate.

[0011] In the above structure of the present utility model, the provision of the positioning block, positioning pin and positioning column enables the positioning to be completed as long as the opening of the workpiece is sleeved on the positioning pin and one side is closely attached to the positioning column. The positioning process is simple and fast, improving the processing efficiency. The longitudinal clamping mechanism and the transverse clamping mechanism clamp the workpiece from two different directions, ensuring the clamping stability and thus ensuring a high processing efficiency. The structures of the longitudinal clamping mechanism and the transverse clamping mechanism are simple. After positioning, only by starting the lever oil cylinder and the single-acting cylinder can the clamping be completed, reducing the cost and improving the processing efficiency. Two sets of longitudinal clamping mechanisms and transverse clamping mechanisms are installed on the vertical plate simultaneously, which can clamp two workpieces at the same time, further improving the processing efficiency. The two sets of transverse clamping mechanisms share the same vertical block, streamlining the fixture structure and further reducing the cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic front view of the present utility model;

[0013] Figure 2 is a schematic top view of the present utility model;

[0014] Figure 3 is a schematic axonometric view of the present utility model;

[0015] Figure 4 is a schematic view of the present utility model in the state of clamping the workpiece;

[0016] Figure 5 is a schematic structural view of the workpiece. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] See Figures 1 to 5 , a double-station hydraulic fixture for a pressing plate type workpiece, which comprises a bottom plate 1, a vertical plate 2 is installed on the bottom plate 1, and a combination of two longitudinal clamping mechanisms and transverse clamping mechanisms is installed on the vertical plate 2. The longitudinal pressing mechanism comprises a positioning block 7 and a lever oil cylinder 4. A positioning pin 14 is installed on the positioning block 7, and the diameter of the positioning pin 14 is equal to the inner diameter of the opening 101 of the workpiece 10; the horizontal distance between the center of the positioning pin 14 and the top end of the positioning column 12 is equal to the distance from the center of the opening 101 of the workpiece 10 to the side surface of the workpiece 10. The piston rod of the lever oil cylinder 4 is rotatably connected to one end of the lever pressing plate 6. The lever pressing plate 6 is installed on the hinge bracket 3, and the hinge bracket 3 is installed on the upper surface of the lever oil cylinder 4. The bottom of the other end of the lever oil cylinder 4 and the top surface of the positioning block 7 constitute the longitudinal clamping of the workpiece 10. The transverse clamping mechanism comprises a single-acting cylinder 13 and a positioning column 12. The extending direction of the piston rod 11 of the single-acting cylinder 13 is opposite to the direction of the positioning column 12. The positioning column 12 is installed on the side surface of the vertical block 5, and the vertical block 5 is installed on the vertical plate 2. The top end of the piston rod 11 of the single-acting cylinder 13 and the top end of the positioning column 12 constitute the transverse clamping of the workpiece 10.

[0018] The two transverse clamping mechanisms share the same vertical block 5, and the two positioning columns 12 of the two transverse clamping mechanisms are respectively installed on the two side surfaces of the vertical block 5.

[0019] An oil distributor 8 is installed on one side of the bottom plate 1, and an oil passage (not shown in the figure) is provided in the bottom plate 1 and the vertical plate 2 for delivering engine oil to the lever oil cylinder 4 and the single-acting cylinder 13.

[0020] The working process of the utility model is as follows:

[0021] The opening 101 of the workpiece 10 is sleeved on the positioning pin 14, and one side surface is closely attached to the top end of the positioning column 12 to complete positioning. Then the switch is started, and the piston rods of the lever oil cylinder 4 and the single-acting cylinder 13 both extend, driving the lever pressure plate 6 to press down until the bottom end of the lever pressure plate 6 and the top end of the piston rod 11 of the single-acting cylinder 13 are respectively closely attached to the front and side surfaces of the workpiece 10, realizing the transverse and longitudinal clamping of the workpiece 10 and completing the clamping. At this time, the workpiece 10 can be machined. After the machining is completed, the switch is turned off, and the piston rods of the lever oil cylinder 4 and the single-acting cylinder 13 both retract, and the bottom end of the lever pressure plate 6 and the top end of the piston rod 11 of the single-acting cylinder 13 are separated from the surface of the workpiece 10. At this time, the workpiece 10 can be taken out to complete the process.

Claims

1. A double-station hydraulic fixture for pressing plate-like workpieces, which comprises a bottom plate, and a vertical plate is installed on the bottom plate, and is characterized in that: The vertical plate is equipped with a longitudinal clamping mechanism and a transverse clamping mechanism. The longitudinal clamping mechanism includes a positioning block and a lever oil cylinder. The positioning block is equipped with a positioning pin. The piston rod of the lever oil cylinder is rotatably connected to one end of a lever pressure plate. The lever pressure plate is installed on a hinge bracket, and the hinge bracket is installed on the upper surface of the lever oil cylinder. The bottom of the other end of the lever oil cylinder and the top surface of the positioning block form longitudinal clamping of the workpiece. The transverse clamping mechanism includes a single-acting cylinder and a positioning column. The extending direction of the piston rod of the single-acting cylinder is opposite to the direction of the positioning column. The positioning column is installed on the side surface of a vertical block, and the vertical block is installed on the vertical plate. The top end of the piston rod of the single-acting cylinder and the top end of the positioning column form transverse clamping of the workpiece.

2. The double-station hydraulic fixture for pressing plate workpieces according to claim 1, characterized in that: There are two sets of the longitudinal clamping mechanism and the transverse clamping mechanism.

3. The double-station hydraulic fixture for pressing plate type workpieces according to claim 2, wherein: The two transverse clamping mechanisms share the same vertical block, and the two positioning columns of the two transverse clamping mechanisms are respectively installed on the two side surfaces of the vertical block.

4. A double-station hydraulic fixture for pressing plate-like workpieces according to claim 1 or 2, characterized in that: The diameter of the positioning pin is equal to the inner diameter of the hole in the workpiece.

5. A double-station hydraulic fixture for pressing plate workpieces according to claim 1 or 2, characterized in that: The horizontal distance between the center of the positioning pin and the top end of the positioning column is equal to the distance from the center of the hole in the workpiece to the side surface of the workpiece.

6. The double-station hydraulic fixture for pressing plate-like workpieces according to claim 1 or 2, characterized in that: An oil distributor is installed on one side of the bottom plate, and an oil circuit is provided in the bottom plate and the vertical plate.

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