CN220427525U - Positioning fixture for irregularly-shaped workpiece - Google Patents

Abstract

The utility model relates to the field of positioning fixtures, in particular to a positioning fixture for irregularly-shaped workpieces, which comprises a bottom plate, wherein a chuck is movably connected above the bottom plate, a first sliding block is fixedly arranged below the chuck, a central connecting block is fixedly arranged inside the chuck, one side of the central connecting block is movably connected with a threaded rod, two sides of the bottom plate are fixedly provided with limiting plates, and a mounting block is movably connected above a cylinder; according to the utility model, the bottom plate is arranged, the workpiece is firstly placed above the chuck, the plurality of adjusting nuts are rotated, the adjusting nuts drive the threaded rod to rotate, the threaded rod drives the second sliding block on the outer wall to move, so that the clamping blocks can clamp all positions of the workpiece, then the chuck is moved, the first sliding block below the chuck moves in the sliding groove of the bottom plate, the limiting plates at the two ends of the bottom plate limit the first sliding block, so that the clamping blocks can clamp workpieces with different lengths, and the processing is convenient.

Description

Positioning fixture for irregularly-shaped workpiece

Technical Field

The utility model relates to the technical field of positioning fixtures, in particular to a positioning fixture for irregularly-shaped workpieces.

Background

The fixture is used to fix the machining object in the correct position during the machining process to accept the construction or detection. In a broad sense, any device used to quickly, conveniently and safely mount a workpiece at any stage in the process may be referred to as a fixture.

The prior patent (publication number: CN 207104163U) discloses a welding fixture suitable for irregular workpieces, which comprises a triangular frame type fixture shell, wherein each side of the fixture shell is provided with a fixing component used for clamping the irregular workpieces, the fixing component comprises a fastener matched with the workpieces, the space formed by the fasteners of the three fixing components is used for placing the irregular workpieces, an adjusting rod is detachably arranged on the fastener, the adjusting rod extends outwards through the side wall of the fixture shell, a spring is sleeved on the adjusting rod, two ends of the spring are limited between the fastener and the side wall of the fixture shell, and the tail end of the adjusting rod is provided with an adjusting handle. According to the utility model, the irregular workpiece is placed in the space formed by the three fasteners to be clamped, so that the contact surface of the three fasteners and the workpiece forms a stable triangle, the clamping effect is good, and the phenomenon that the irregular workpiece slides in the welding process in the prior art is solved.

The inventors found that the following problems exist in the prior art in the process of implementing the present utility model: the device can not use the same pressure to clamp the article every time, the article can be damaged and the flexible article can not be clamped, and the device can not vertically clamp and clamp the article at multiple positions, so that the fixing effect is poor.

For this reason, it is highly desirable to provide a positioning jig for irregularly shaped workpieces.

Disclosure of Invention

(one) solving the technical problems

Aiming at the defects of the prior art, the utility model aims to provide a positioning fixture for workpieces with irregular shapes.

(II) technical scheme

In order to achieve the above purpose, the utility model provides a positioning fixture for irregularly shaped workpieces, which adopts the following technical scheme: the clamping device comprises a bottom plate, wherein a clamping plate is movably connected above the bottom plate, a first sliding block is fixedly arranged below the clamping plate, a central connecting block is fixedly arranged inside the clamping plate, and one side of the central connecting block is movably connected with a threaded rod;

the both sides of bottom plate are all fixed mounting has the limiting plate, one side fixed mounting of limiting plate has the cylinder, the top swing joint of cylinder has the installation piece, the top fixed mounting of installation piece has the lower plate, sets up like this and makes the device can carry out diversified fixed.

Preferably, a sliding groove matched with the first sliding block is formed above the bottom plate, so that the first sliding block can slide above the bottom plate.

As the preferable scheme, the threaded rod is connected with the chuck in a penetrating way, an adjusting nut is fixedly arranged at one end of the threaded rod, and the threaded rod can be driven to rotate by rotating the adjusting nut.

As the preferable scheme, the outer wall swing joint of threaded rod has the second slider, the top fixed mounting of second slider has the clamp splice, sets up like this and makes the threaded rod rotate and can drive the second slider and remove.

As a preferable scheme, one end of the air cylinder is provided with threads, and a thread groove matched with the air cylinder is formed below the mounting block, so that the air cylinder can be fixedly mounted below the mounting block.

As the preferable scheme, the top fixed mounting of lower plate has the hinge seat, the top fixed mounting of cylinder has the pole that contracts that rises, the one end swing joint of hinge seat has the punch holder, sets up like this and makes the cylinder can drive the pole that contracts and remove.

As the preferable scheme, the outer wall swing joint of punch holder has the locating piece, fixed mounting has the spring between punch holder and the lower plate, sets up like this and makes the lift pole decline back spring can drive the punch holder and restore to the throne.

(III) beneficial effects

Compared with the prior art, the utility model provides the positioning clamp for the irregularly-shaped workpiece, which has the following beneficial effects:

1. according to the utility model, the bottom plate is arranged, the workpiece is firstly placed above the chuck, the plurality of adjusting nuts are rotated, the adjusting nuts drive the threaded rod to rotate, the threaded rod drives the second sliding block on the outer wall to move, so that the clamping blocks can clamp all positions of the workpiece, then the chuck is moved, the first sliding block below the chuck moves in the sliding groove of the bottom plate, the limiting plates at the two ends of the bottom plate limit the first sliding block, so that the clamping blocks can clamp workpieces with different lengths, and the processing is convenient.

2. According to the utility model, the workpiece is moved to the lower clamping plate by arranging the positioning block, then the air cylinder is started, the air cylinder drives the lifting and shrinking rod to move, and the telescopic rod drives the upper clamping plate to rotate on the hinge seat, so that one end of the upper clamping plate clamps the workpiece above the lower clamping plate, the positioning block can be adjusted to clamp the workpiece to different degrees, and thus the workpiece can be clamped in multiple directions, and the danger caused by popup during processing is prevented.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a schematic view of a partial internal cross-section of a base plate according to the present utility model;

FIG. 3 is a schematic view of a partial side view of the lower clamping plate of the present utility model;

FIG. 4 is a schematic view of a partial perspective view of a chuck according to the present utility model;

fig. 5 is a schematic view of a partial perspective structure of the lower clamping plate of the present utility model.

In the figure: 1. a bottom plate; 2. a limiting plate; 3. a chuck; 4. a first slider; 5. a central connecting block; 6. a threaded rod; 7. an adjusting nut; 8. a second slider; 9. clamping blocks; 10. a cylinder; 11. a mounting block; 12. a lower clamping plate; 13. a lifting rod; 14. a hinge base; 15. an upper clamping plate; 16. a positioning block; 17. and (3) a spring.

Detailed Description

Embodiments of the present utility model are described in further detail below with reference to the accompanying drawings and examples. The following examples are illustrative of the utility model but are not intended to limit the scope of the utility model.

In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front," "rear," "head," "tail," and the like are used as an orientation or positional relationship based on that shown in the drawings, merely to facilitate description of the utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the utility model. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Example 1

Referring to fig. 1-5, the embodiment provides a positioning fixture for irregularly shaped workpieces, which comprises a bottom plate 1, wherein a chuck 3 is movably connected above the bottom plate 1, a first sliding block 4 is fixedly arranged below the chuck 3, a central connecting block 5 is fixedly arranged inside the chuck 3, and a threaded rod 6 is movably connected to one side of the central connecting block 5;

the limiting plates 2 are fixedly installed on two sides of the bottom plate 1, the air cylinders 10 are fixedly installed on one sides of the limiting plates 2, the installation blocks 11 are movably connected above the air cylinders 10, the lower clamping plates 12 are fixedly installed above the installation blocks 11, and therefore the device can be fixed in multiple directions, and deflection during workpiece machining is prevented.

The spout that matches with first slider 4 has been seted up to the top of bottom plate 1, sets up like this and makes first slider 4 can slide in the top of bottom plate 1 to can carry out spacingly to it.

The threaded rod 6 is connected to the chuck 3 in a penetrating way, an adjusting nut 7 is fixedly arranged at one end of the threaded rod 6, and thus the threaded rod 6 can be driven to rotate by rotating the adjusting nut 7.

The outer wall swing joint of threaded rod 6 has second slider 8, and the top fixed mounting of second slider 8 has clamp splice 9, sets up like this and makes threaded rod 6 rotate and can drive second slider 8 and remove, and second slider 8 drives clamp splice 9 and removes.

One end of the cylinder 10 is provided with threads, and a thread groove matched with the mounting block 11 is formed below the mounting block 11, so that the cylinder 10 can be fixedly mounted below the mounting block 11.

Example 2

The hinge base 14 is fixedly arranged above the lower clamping plate 12, the lifting and shrinking rod 13 is fixedly arranged above the air cylinder 10, and one end of the hinge base 14 is movably connected with the upper clamping plate 15, so that the air cylinder 10 can drive the lifting and shrinking rod 13 to move, and the upper clamping plate 15 rotates on the hinge base 14.

The outer wall of the upper clamping plate 15 is movably connected with a positioning block 16, and a spring 17 is fixedly arranged between the upper clamping plate 15 and the lower clamping plate 12, so that the spring 17 can drive the upper clamping plate 15 to reset after the lifting and contracting rod 13 descends, and limiting of a workpiece is relieved.

The working principle of the utility model is as follows: when the clamping device is used, a workpiece is placed above the clamping plate 3, then the adjusting nuts 7 are rotated, the adjusting nuts 7 drive the threaded rods 6 to rotate, the threaded rods 6 drive the second sliding blocks 8 on the outer walls to move, so that the clamping blocks 9 can clamp the workpiece at all positions, then the clamping plate 3 is moved, the first sliding blocks 4 below the clamping plate 3 move in the sliding grooves of the bottom plate 1, and the limiting plates at the two ends of the bottom plate 1 limit the workpiece;

then the workpiece is moved to the lower clamping plate 12, then the air cylinder 10 is started, the air cylinder 10 drives the lifting and shrinking rod 13 to move, the telescopic rod drives the upper clamping plate 15 to rotate on the hinge base 14, one end of the upper clamping plate 15 clamps the workpiece above the lower clamping plate 12, and the positioning block 16 can be adjusted to clamp the workpiece to different degrees.

Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the scope of the present utility model, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made to the technical solution of the present utility model without departing from the spirit and scope of the technical solution of the present utility model.

Claims (7)

1. Positioning fixture of irregularly shaped work piece, including bottom plate (1), its characterized in that: the upper part of the bottom plate (1) is movably connected with a chuck (3), a first sliding block (4) is fixedly arranged below the chuck (3), a central connecting block (5) is fixedly arranged inside the chuck (3), and one side of the central connecting block (5) is movably connected with a threaded rod (6);

limiting plates (2) are fixedly mounted on two sides of the bottom plate (1), an air cylinder (10) is fixedly mounted on one side of the limiting plates (2), a mounting block (11) is movably connected to the upper portion of the air cylinder (10), and a lower clamping plate (12) is fixedly mounted above the mounting block (11).

2. A positioning fixture for irregularly shaped workpieces as claimed in claim 1, wherein: a sliding groove matched with the first sliding block (4) is formed above the bottom plate (1).

3. A positioning fixture for irregularly shaped workpieces as claimed in claim 1, wherein: the threaded rod (6) is connected to the chuck (3) in a penetrating mode, and an adjusting nut (7) is fixedly arranged at one end of the threaded rod (6).

4. A positioning fixture for irregularly shaped workpieces as claimed in claim 3, wherein: the outer wall swing joint of threaded rod (6) has second slider (8), the top fixed mounting of second slider (8) has clamp splice (9).

5. A positioning fixture for irregularly shaped workpieces as claimed in claim 1, wherein: one end of the air cylinder (10) is provided with threads, and a thread groove matched with the mounting block (11) is formed below the mounting block.

6. A positioning fixture for irregularly shaped workpieces as claimed in claim 1, wherein: the upper part of the lower clamping plate (12) is fixedly provided with a hinge seat (14), the upper part of the air cylinder (10) is fixedly provided with a lifting rod (13), and one end of the hinge seat (14) is movably connected with an upper clamping plate (15).

7. The positioning fixture for irregularly shaped workpieces as claimed in claim 6, wherein: the outer wall of the upper clamping plate (15) is movably connected with a positioning block (16), and a spring (17) is fixedly arranged between the upper clamping plate (15) and the lower clamping plate (12).