Special vertical clamp for special-shaped workpiece

Abstract

The utility model provides a special vertical clamp for a special-shaped workpiece, which is accurate in positioning, stable in clamping and high in machining precision and machining quality. The clamping device comprises a base, a positioning mechanism, a clamping mechanism and a supporting mechanism are installed on the base, the clamping mechanism comprises a transverse clamping mechanism, a longitudinal clamping mechanism and a vertical clamping mechanism, the transverse clamping mechanism comprises a combination of three lever oil cylinders and supporting pins and a combination of a wide lever oil cylinder and a supporting cylinder, and the vertical clamping mechanism comprises a supporting pin and a supporting pin. A piston rod of the lever oil cylinder is rotationally connected with one end of the lever pressing plate, a pressing block is arranged at the other end of the lever pressing plate, a piston rod of the wide lever oil cylinder is connected with one end of the wide lever pressing plate, a wide pressing block is arranged at the other end of the wide lever pressing plate, and the supporting pin and the supporting cylinder are both installed on the base. Wherein the combination of one lever oil cylinder and the supporting pin is installed in the middle of the base, the combination of the other two lever oil cylinders and the supporting pin is installed at the tail end of the base, and the combination of the wide lever oil cylinder and the supporting cylinder is installed at the head end of the base.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic clamps, in particular to a special vertical clamp for special-shaped workpieces. Background Art

[0002] like Figure 1 As shown, this type of special-shaped workpiece has a large mass, a large volume, a complex structure, and a high requirement for processing precision, which makes it extremely difficult to fix and clamp the workpiece. The existing fixture cannot meet the positioning accuracy and clamping stability. The position of the parts often deviates during clamping, and they often become loose during processing, causing the processing tool to let go or vibrate, resulting in low workpiece processing accuracy and quality. Summary of the invention

[0003] In view of the shortcomings of existing special-shaped workpiece fixtures that cannot meet the requirements of positioning accuracy and clamping stability, resulting in low workpiece processing accuracy and processing quality, the utility model provides a special vertical fixture for special-shaped workpieces, which has accurate positioning, stable clamping, high processing accuracy and processing quality.

[0004] A special vertical clamp for special-shaped workpieces, which includes a base, characterized in that: the base is equipped with a positioning mechanism, a clamping mechanism and a supporting mechanism, the clamping mechanism includes a transverse clamping mechanism, a longitudinal clamping mechanism and a vertical clamping mechanism, the transverse clamping mechanism includes a combination of three lever cylinders and supporting pins and a combination of a wide lever cylinder and a supporting cylinder, the piston rod of the lever cylinder is rotatably connected to one end of the lever pressure plate, the other end of the lever pressure plate is provided with a pressure block, the piston rod of the wide lever cylinder is connected to one end of the wide lever pressure plate, and the other end of the wide lever pressure plate is provided with a wide pressure block, the supporting pin and the supporting cylinder are both installed on the base, one of the lever cylinder and support pin combinations is installed in the middle of the base, the other two lever cylinders and support pin combinations are installed at the tail end of the base, and the wide lever cylinder and support cylinder combination is installed at the head end of the base; The longitudinal clamping mechanism includes a thin lever cylinder, a piston rod of the thin lever cylinder rotatably connected to one end of the thin lever pressure plate, the thin lever cylinder is installed on the first vertical plate, and the first vertical plate is installed on the tail end of the base; the vertical clamping mechanism includes a thin cylinder and a pressure pin, and the extension direction of the piston rod of the thin cylinder is opposite to the pointing direction of the pressure pin; the positioning mechanism includes a positioning block and a first positioning pin and a second positioning pin, the positioning block is a vertical block with a folded angle, the folding angle of the positioning block is consistent with the inclination angle of the bent part of the head end of the workpiece, a positioning hole is opened on the positioning block, the positioning block is installed at the head end of the base, the first positioning pin is installed in the middle part of the base, and the second positioning pin is installed on the side of the first vertical plate, the positioning block positions the head end of the workpiece, the first positioning pin positions the middle beam of the workpiece, and the second positioning pin positions the tail end of the workpiece.

[0005] It is further characterized by:

[0006] The support mechanism includes a push block and a push rod, the push block can be slidably mounted on the vertical block, an L-shaped mounting block is mounted on one side of the vertical block, an adjusting screw is installed through the vertical plate of the L-shaped mounting block, the push rod can be slidably mounted on the column, and the column is mounted on the base;

[0007] The first positioning pin is the support pin installed in the middle of the base;

[0008] The positioning block is installed between the wide lever cylinder and the supporting cylinder;

[0009] There are two support cylinders, which are respectively installed below the two sides of the inclined part of the positioning block;

[0010] There are two second positioning pins;

[0011] The thin oil cylinder and the pressing nail are respectively installed on the second vertical plate and the third vertical plate, and the second vertical plate and the third vertical plate are respectively installed on the upper and lower sides of the middle part of the base.

[0012] In the above structure of the utility model, the positioning block, the first positioning pin and the second positioning pin in the positioning mechanism respectively position the head end, the tail end and the middle of the workpiece, realizing the three-point positioning method, making the positioning accurate and improving the processing accuracy. The horizontal clamping mechanism, the longitudinal clamping mechanism and the vertical clamping mechanism clamp the workpiece from three different directions respectively, ensuring the stability of the clamped workpiece, preventing the tool from letting go and the tool from vibrating during the processing, thereby ensuring the processing quality. The support mechanism provides auxiliary support to the workpiece from multiple angles to prevent the workpiece from being deformed or broken due to uneven force during the processing, ensuring the processing stability of each processing surface, and further improving the processing accuracy and processing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the workpiece;

[0014] Figure 2 It is a schematic diagram of the axonometric view of the utility model;

[0015] Figure 3 A schematic diagram of the main view of the utility model;

[0016] Figure 4 It is a schematic diagram of the utility model from a top view;

[0017] Figure 5 It is a schematic diagram of the utility model from the left side;

[0018] Figure 6 It is a schematic diagram of the clamping state of a workpiece of the utility model. DETAILED DESCRIPTION

[0019] The utility model is based on the use of a workpiece 22, the structure of the workpiece 22 is as follows Figure 1 As shown, the workpiece 22 is T-shaped, and the main body 221 of the workpiece 22 is hollow. Three beams are arranged in the hollow part of the workpiece 22, namely a head beam 224, a middle beam 225, and a tail beam 226. The head end of the workpiece 22 is bent, and the bent part 222 of the head end of the workpiece 22 is provided with an opening 223. The tail end of the workpiece 22 is a flat plate 227, and the two sides of the flat plate 227 are connected to the two sides of the main body 221 through rounded connecting plates 228.

[0020] See Figures 2 to 6A special vertical clamp for special-shaped workpieces, which includes a base 1, on which a positioning mechanism, a clamping mechanism and a supporting mechanism are installed. The clamping mechanism includes a transverse clamping mechanism, a longitudinal clamping mechanism and a vertical clamping mechanism. The transverse clamping mechanism includes a combination of three lever cylinders 2 and supporting pins 3 and a combination of a wide lever cylinder 6 and a supporting cylinder 7. The piston rod of the lever cylinder 2 is rotatably connected to one end of the lever pressure plate 201, and the other end of the lever pressure plate 201 is provided with a pressure block. The piston rod of the wide lever cylinder 6 is connected to one end of the wide lever pressure plate 601, and the other end of the wide lever pressure plate 601 is provided with a wide pressure block 4. The supporting pins 3 and the supporting cylinder 7 are both installed on the base 1, one of the combinations of the lever cylinder 2 and the supporting pin 3 is installed in the middle of the base 1, and the other two lever cylinders 2 and the supporting pins 3 are installed in the middle of the base 1. The combination of the support pin 3 is installed at the tail end of the base 1, and the combination of the wide lever cylinder 6 and the support cylinder 7 is installed at the head end of the base 1. There are two support cylinders 7, and the two support cylinders 7 are respectively installed on both sides of the lower part of the inclined part of the positioning block 4; the longitudinal clamping mechanism includes a thin lever cylinder 8, and the piston rod of the thin lever cylinder 8 is rotatably connected to one end of the thin lever pressure plate 201. The thin lever cylinder 8 is installed on the first vertical plate 20, and the first vertical plate 20 is installed at the tail end of the base 1; the vertical clamping mechanism includes a thin cylinder 9 and a pressing nail 10. The extension direction of the piston rod of the thin cylinder 9 is opposite to the pointing direction of the pressing nail 10. The thin cylinder 9 and the pressing nail 10 are respectively installed on the second vertical plate 11 and the third vertical plate 12, and the second vertical plate 11 and the third vertical plate 12 are respectively installed on the upper and lower sides of the middle part of the base 1.

[0021] The positioning mechanism includes a positioning block 4, a first positioning pin 23, and two second positioning pins 21. The positioning block 4 is a vertical block 17 with a folded angle. The folded angle of the positioning block 4 is consistent with the inclination angle of the bent portion 222 at the head end of the workpiece 22. A positioning hole 5 is provided on the positioning block 4. The positioning block 4 is installed between the wide lever cylinder 6 and the support cylinder 7; the first positioning pin 23 is a support pin 3 installed in the middle of the base 1; the second positioning pins 21 are respectively installed at both ends of the side of the first vertical plate 20, the positioning block 4 positions the head end of the workpiece 22, the first positioning pin 23 positions the middle crossbeam of the workpiece 22, and the second positioning pin 21 positions the tail end of the workpiece 22.

[0022] The supporting mechanism includes a push block 13 and a push rod 18. The push block 13 can be slidably mounted on the vertical block 17. An L-shaped mounting block 16 is installed on one side of the vertical block 17. An adjusting screw 14 is installed through the vertical plate of the L-shaped mounting block 16. The push rod 18 can be slidably mounted on the column 19, and the column 19 is installed on the base 1.

[0023] Combine the following Figure 6 Describe the working process of this utility model:

[0024] Put the workpiece 22 into the fixture, align the opening 223 at the head end of the workpiece 22 with the positioning hole 5 of the positioning block 4, the middle crossbeam of the workpiece 22 is close to the first positioning pin 23, and the flat plate at the tail end of the workpiece 22 is close to the second positioning pin 21, and the positioning is completed. Start the switch, the piston rods of the wide lever cylinder 6, the thin lever cylinder 8, the thin cylinder 9, the three lever cylinders 2, and the two support cylinders 7 are all extended, driving the lever pressing plate 201, the wide lever pressing plate 601, and the thin cylinder 9 pressing plate to press down, the wide lever pressing plate 601 and the two support cylinders 7 clamp the bent part 222 of the head end of the workpiece 22 from the horizontal direction, a combination of a lever pressing plate 201 and a support pin 3 clamps the middle crossbeam 225 of the workpiece 22 from the horizontal direction, and the combination of two lever pressing plates 201 and support pins 3 clamp the connecting plates on both sides of the tail end of the workpiece 22 from the horizontal direction. The thin oil cylinder 9 and the pressure pin 10 clamp the two sides of the workpiece 22 vertically, and the thin lever pressure plate 801 and the second positioning pin 21 clamp the side of the tail beam of the workpiece 22 longitudinally to complete the clamping. Then push the push rod 18, turn the adjustment screw 14 to push the push block 13 until the push rod 18 and the push block 13 are close to the workpiece 22 to complete the auxiliary support. At this time, the workpiece 22 can be processed. After the processing is completed, the push block 13 and the push rod 18 are pulled back to their original positions, and the switch is turned off. The piston rods of the wide lever oil cylinder 6, the thin lever oil cylinder 8, the thin oil cylinder 9, the three lever oil cylinders 2, and the two support cylinders 7 are all retracted, and the wide lever pressure plate 601, the thin lever pressure plate 201, the piston rods of the thin oil cylinder 9, the lever pressure plate 201, and the piston rods of the support cylinder 7 are all separated from the surface of the workpiece 22. At this time, the workpiece 22 can be taken out to complete the process.

Claims

1. A special vertical fixture for special-shaped workpieces, comprising a base, characterized in that: The base is equipped with a positioning mechanism, a clamping mechanism and a supporting mechanism, and the clamping mechanism includes a transverse clamping mechanism, a longitudinal clamping mechanism and a vertical clamping mechanism, the transverse clamping mechanism includes a combination of three lever cylinders and supporting pins and a combination of a wide lever cylinder and a supporting cylinder, the piston rod of the lever cylinder is rotatably connected to one end of the lever pressure plate, and the other end of the lever pressure plate is provided with a pressure block, the piston rod of the wide lever cylinder is connected to one end of the wide lever pressure plate, and the other end of the wide lever pressure plate is provided with a wide pressure block, the support pin and the supporting cylinder are both installed on the base, one of the lever cylinders and the supporting pin combination is installed in the middle of the base, the other two lever cylinders and the supporting pin combination are installed at the tail end of the base, and the wide lever cylinder and the supporting cylinder combination is installed at the head end of the base; the longitudinal clamping mechanism includes a thin lever Rod cylinder, the piston rod of the thin lever cylinder is rotatably connected to one end of the thin lever pressure plate, the thin lever cylinder is installed on the first vertical plate, and the first vertical plate is installed on the tail end of the base; the vertical clamping mechanism includes a thin cylinder and a pressure pin, and the extension direction of the piston rod of the thin cylinder is opposite to the pointing direction of the pressure pin; the positioning mechanism includes a positioning block and a first positioning pin and a second positioning pin, the positioning block is a vertical block with a folded angle, the folding angle of the positioning block is consistent with the inclination angle of the bent part of the head end of the workpiece, a positioning hole is opened on the positioning block, the positioning block is installed at the head end of the base, the first positioning pin is installed in the middle of the base, and the second positioning pin is installed on the side of the first vertical plate, the positioning block positions the head end of the workpiece, the first positioning pin positions the middle beam of the workpiece, and the second positioning pin positions the tail end of the workpiece.

2. A special vertical fixture for special-shaped workpieces according to claim 1, characterized in that: The supporting mechanism includes a push block and a push rod, the push block can be slidably mounted on the vertical block, an L-shaped mounting block is installed on one side of the vertical block, an adjusting screw is installed through the vertical plate of the L-shaped mounting block, the push rod can be slidably mounted on the column, and the column is installed on the base.

3. A special vertical fixture for special-shaped workpieces according to claim 1 or 2, characterized in that: The first positioning pin is the supporting pin installed in the middle of the base.

4. A vertical fixture for special-shaped workpieces according to claim 1 or 2, characterized in that: The positioning block is installed between the wide lever cylinder and the supporting cylinder.

5. A special vertical fixture for special-shaped workpieces according to claim 1 or 2, characterized in that: There are two support cylinders, which are respectively installed below the two sides of the inclined part of the positioning block.

6. A vertical fixture for special-shaped workpieces according to claim 1 or 2, characterized in that: There are two second positioning pins.

7. A special vertical fixture for special-shaped workpieces according to claim 1 or 2, characterized in that: The thin oil cylinder and the pressing nail are respectively installed on the second vertical plate and the third vertical plate, and the second vertical plate and the third vertical plate are respectively installed on the upper and lower sides of the middle part of the base.

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