CN205147894U - Multistation hydraulically operated fixture - Google Patents

Abstract

The utility model relates to a multi-station hydraulic clamp, which comprises a clamp frame, and multiple sets of clamp devices with the same structure are arranged on the clamp frame. Two sets of clamping components are connected side by side by connecting rods to form a group. The two sets of clamping components are arranged symmetrically on the fixture frame. The oil cylinder is set on the back of the fixture frame. Both ends of the oil cylinder are equipped with piston rods. It is installed at the upper and lower ends of the fixture frame, and the piston rod is connected to the clamping device. When the workpiece needs to be clamped, the clamping device installed at the upper and lower ends of the frame presses the clamping assembly under the thrust of the piston rod, and the symmetrically arranged two sets of clamping The assembly is pressurized and clamped against the workpiece simultaneously. The beneficial effects are: convenient loading and unloading, reliable clamping, high efficiency and durability, and wide application range; fast, multi-piece, and convenient clamping and fixing can be performed on small and medium-sized parts that are not easy to be fixed and pressed by a pressure plate in the traditional sense.

Description

A multi-station hydraulic clamp

technical field

The utility model relates to the technical field of machining tools, in particular to a multi-station hydraulic clamp.

Background technique

Milling is a common metal cold processing method. During the milling process, the milling cutter rotates around the axis at high speed under the drive of the spindle, and the workpiece to be processed is in a static state under the clamping of the corresponding fixture. The workpiece is processed and formed. When it is necessary to process a certain plane of the workpiece, the processing surface is required to be parallel to the back side. The conventional clamping method is: use a strong magnetic chuck to hold the back side to realize plane processing. If other clamping methods such as vise are used, the parallelism requirements of the processing surface and the back cannot be guaranteed, but the method of using a strong magnetic chuck cannot be set in multiple stations, resulting in low processing efficiency and low processing accuracy.

Utility model content

The purpose of the utility model is to solve the above problems and provide a multi-station hydraulic clamp with convenient loading and unloading and reliable clamping.

The technical solution is as follows

A multi-station hydraulic clamp is characterized in that it includes a clamp frame, and multiple sets of clamp devices with the same structure are arranged on the clamp frame, and the clamp devices include four clamp assemblies with the same structure, one oil cylinder and two For the pressing device with the same structure, two of the four clamping assemblies are connected side by side through connecting rods to form a group. Both ends are provided with piston rods, and the pressing device is arranged at the upper and lower ends of the fixture frame, and the piston rod is connected with the pressing device. When the workpiece needs to be clamped, the pressing device arranged at the upper and lower ends of the frame The thrust of the piston rod presses the clamping assembly, and the symmetrically arranged two sets of clamping assemblies clamp and press the workpiece simultaneously under the action of pressure.

As a further improvement, the clamping assembly includes a workpiece support block, a positioning column, a pressure head, a slope plate and a workpiece support pile pin, the workpiece support block and the positioning column are arranged on the fixture frame, and the workpiece support The end face of the block is close to the positioning column, the pressure head is erected on the fixture frame, and is located on the side close to the pressing device, the slope plate is fixedly installed on the positioning column close to the end of the workpiece support block, and the workpiece support pile Pins are provided on the workpiece support block.

As a further improvement, the indenter includes an indenter slope clamping portion for clamping the workpiece, the slope plate includes a slope plate slope clamping portion for clamping the workpiece, and the indenter slope clamps The part cooperates with the inclined plane clamping part of the slope plate to clamp the workpiece.

As a further improvement, the connecting rod is connected to the pressure head, and a spring is further provided between the connecting rod and the pressure head.

As a further improvement, the pressing device includes a force arm vertical rod and a push rod seat, the force arm vertical rod is movably arranged at the upper and lower ends of the clamp frame through a long pin rod, and one end of the push rod seat is tightened by an oil cylinder. One end of the vertical rod of the force arm is tightened by the wheel, the other end of the push rod seat is connected to the piston rod, and the other end of the vertical rod of the force arm presses the connecting rod.

As a further improvement, the ejector rod seat is arranged on the back of the fixture frame through a fixing column, and a spring is provided at a position where the head of the ejector rod seat contacts the fixing column.

As a further improvement, there are four sets of clamp devices.

Beneficial effect

The utility model device is easy to assemble and disassemble, reliable in clamping, efficient and durable, and has a wide range of applications; it can quickly, multi-piece, and conveniently clamp and fix small and medium-sized parts that are not easy to be fixed and pressed by pressing plates in the traditional sense; and ensure that the workpiece It will not move during milling, thus ensuring the processing quality of the workpiece.

Description of drawings

The utility model is further described below in conjunction with accompanying drawings and examples of implementation.

Fig. 1 is a sectional view of the utility model;

Fig. 2 is the front view of the utility model;

Fig. 3 is a schematic diagram of the three-dimensional structure of the utility model.

Labels in the figure:

1. Fixture frame 2. Oil cylinder 3. Piston rod

4. Workpiece support block 5, positioning column 6, pressure head

7. Slope plate 8. Workpiece support pile pin 9. Connecting rod

10, lever arm vertical rod 11, ejector rod seat 12, long pin rod

13. Cylinder top tension wheel 14, fixed column 61, pressure head inclined plane clamping part

71. Slope plate slope clamping part A, workpiece a, spring

b. Spring

detailed description

In order to have a further understanding and understanding of the structural features and the achieved effects of the utility model, a detailed description is provided in conjunction with preferred embodiments and accompanying drawings, as follows:

Referring to Figures 1-3, a multi-station hydraulic clamp includes a clamp frame 1, and multiple sets of clamp devices with the same structure are arranged on the clamp frame 1. The clamp device includes four clamping components with the same structure, and an oil cylinder 2 As with two pressing devices with the same structure, four clamping assemblies are connected side by side by connecting rods 9 to form a group. The two sets of clamping assemblies are symmetrically arranged on the clamp frame 1, and the oil cylinder 2 is arranged on the back of the clamp frame 1. The oil cylinder 2 There are piston rods 3 at both ends, and the pressing device is arranged at the upper and lower ends of the fixture frame 1, and the piston rod 3 is connected with the pressing device. The clamping components are pressed under the action of the thrust, and the symmetrically arranged two sets of clamping components are simultaneously clamped and pressed against the workpiece under the action of pressure. The clamping assembly includes a workpiece support block 4, a positioning column 5, a pressure head 6, a slope plate 7 and a workpiece support pile pin 8. The workpiece support block 4 and the positioning column 5 are arranged on the fixture frame 1, and the end surface of the workpiece support block 4 is close to The positioning column 5 and the pressure head 6 are erected on the fixture frame 1 and are located on the side close to the pressing device. The slope plate 7 is fixedly installed on the positioning column 5 and is close to the end of the workpiece support block 4. The workpiece support pile pin 8 is arranged on the workpiece support On the block 4, in order to make the workpiece stable, three workpiece supporting pile pins are arranged altogether. The indenter 6 includes an indenter slope clamping portion 61 for clamping the workpiece, the slope plate 7 includes a slope plate slope clamping portion 71 for clamping the workpiece, the indenter slope clamping portion 62 and the slope plate slope The clamping portion 71 cooperates to clamp the workpiece. The connecting rod 9 is connected to the pressing head 6, and a spring a is also arranged between the connecting rod 9 and the pressing head 6. The pressing device includes a force arm vertical rod 10 and a push rod seat 11. The force arm vertical rod 10 is movably arranged at the upper and lower ends of the fixture frame 1 through a long pin rod 12, and one end of the push rod seat 11 is tightened by the cylinder push wheel 13. One end of the arm vertical rod 10, the other end of the push rod seat 11 is connected to the piston rod 3, and the other end of the arm vertical rod 10 presses the connecting rod 9. The ejector base 11 is arranged on the back of the fixture frame 1 through the fixed column 14 , and a spring b is provided at the contact portion between the head of the ejector base 11 and the fixed column 14 . In order to meet more processing stations, four sets of fixtures can be installed.

The principle of use, this fixture mainly pushes the piston rod 3 back to both ends through the oil cylinder 2 installed on the back of the fixture frame 1 under the action of hydraulic oil. Withstand the force arm vertical rod 10, the force arm vertical rod 10 rotates around the long pin rod 12, the vertical component force on the top of the force arm vertical rod presses the workpiece A on the three workpiece supporting pile pins 8, and the other component force presses the workpiece A A is clamped between the bevel clamping part 61 of the indenter and the bevel clamping part 71 of the slope plate. Press and fix on the workpiece support block 4, so the workpiece can be processed. After the workpiece is processed, the piston rods 3 at both ends of the oil cylinder 2 return to their original positions under the action of the directional hydraulic oil, and the above-mentioned components return to their initial positions in turn, and the process goes round and round.

In summary, it is only a preferred embodiment of the present utility model, and is not used to limit the scope of the utility model implementation. All the shapes, structures, features and spirits described in the scope of the claims of the utility model are equal. Changes and modifications should be included in the scope of the claims of the present utility model.

Claims (7)

1. A multi-station hydraulic clamp is characterized in that it comprises a clamp frame, and the clamp frame is provided with multiple sets of clamp devices with the same structure, and the clamp devices include four clamp assemblies with the same structure, an oil cylinder and Two pressing devices with the same structure, two of the four clamping assemblies are connected side by side through connecting rods to form a group, the two sets of clamping assemblies are symmetrically arranged on the clamp frame, the oil cylinder is arranged on the back of the clamp frame, and the Both ends of the oil cylinder are equipped with piston rods, and the pressing device is arranged at the upper and lower ends of the fixture frame. The piston rod is connected with the pressing device. The device presses the clamping assembly under the thrust of the piston rod, and the symmetrically arranged two sets of clamping assemblies press and clamp the workpiece simultaneously under the action of pressure. 2. A multi-station hydraulic clamp according to claim 1, wherein the clamping assembly includes a workpiece support block, a positioning column, a pressure head, a slope plate and a workpiece support pin, and the workpiece support The block and the positioning column are arranged on the fixture frame, the end surface of the workpiece support block is close to the positioning column, the indenter is erected on the fixture frame, and is located on the side close to the pressing device, and the slope plate is fixed It is installed on the positioning column close to one end of the workpiece support block, and the workpiece support pile pin is arranged on the workpiece support block. 3. A multi-station hydraulic clamp according to claim 2, wherein the indenter includes an incline clamping portion for clamping the workpiece, and the slope plate includes a clamping portion for clamping the workpiece. The clamping part of the inclined plane of the slope plate, the clamping part of the inclined plane of the indenter cooperates with the clamping part of the inclined plane of the slope plate to clamp the workpiece. 4 . The multi-station hydraulic clamp according to claim 2 , wherein the connecting rod is connected to the pressure head, and a spring is arranged between the connecting rod and the pressure head. 5. A multi-station hydraulic clamp according to claim 1, characterized in that the pressing device comprises a vertical rod of the force arm and a jack seat, and the vertical rod of the force arm is movably arranged on the clamp through a long pin The upper and lower ends of the frame, one end of the ejector seat is pressed against one end of the vertical rod of the force arm through the oil cylinder tightening wheel, the other end of the ejector seat is connected to the piston rod, and the other end of the vertical rod of the force arm presses the connecting rod. 6. A multi-station hydraulic clamp according to claim 5, characterized in that the ejector seat is arranged on the back of the fixture frame through a fixed column, and the head of the ejector seat contacts the fixed column With spring. 7. A multi-station hydraulic clamp according to claim 1, characterized in that there are four sets of clamp devices.