Clamp for special-shaped part

Abstract

The utility model relates to the technical field of work fixtures, and discloses a fixture for special-shaped parts, which comprises a base, a through hole is arranged on the outer surface of a fixing cylinder, an extrusion block is arranged on the lower surface of an extrusion plate, and the extrusion block is positioned in the through hole. By rotating the knob, the knob drives the rotating shaft and the gear to rotate, as the gear is meshed with the rack, the rotating motion is converted into the linear motion of the rack, and the rack slides downwards or upwards along the through hole of the cover plate, when the rack moves downwards, the extrusion plate at the lower end of the rack moves downwards along with the rack; the extrusion blocks on the surfaces of the clamping rods are inserted into the through holes in the side walls of the fixing cylinders and directly abut against the outer surfaces of the clamping rods, in the process, the extrusion blocks lock the multiple clamping rods at the same time through rigid contact and prevent the clamping rods from axially sliding in the corresponding fixing cylinders, each clamping rod does not need to be independently locked, and the good using effect is achieved.

Description

Technical Field

[0001] This utility model relates to the field of tooling and fixture technology, specifically a fixture for irregularly shaped parts. Background Technology

[0002] Tooling fixtures are an indispensable part of machining. They can accurately fix the position of parts during machining, reduce the labor intensity of workers, and improve labor efficiency.

[0003] The utility model patent application with publication number "CN221735947U" discloses a fixture for irregularly shaped parts, which mainly consists of a clamping table, a drive motor, an electric push rod, a force-bearing table, a movable plate, and an irregularly shaped workpiece clamping mechanism. This technical solution, through the irregularly shaped workpiece clamping mechanism, enables the fixture to clamp and fix irregularly shaped workpieces during use, thereby improving the practicality of the fixture, saving time, and reducing costs.

[0004] The tooling fixture for clamping irregularly shaped workpieces disclosed in the aforementioned document has the following defects: The tooling fixture moves the clamping rods toward the inside of the fixed cylinder according to the shape of the irregularly shaped workpiece, and then fixes the movable blocks one by one by locking screws, thereby clamping and fixing the irregularly shaped workpieces. However, during use, the clamping rods in each clamping mechanism need to be adjusted individually by locking screws, which takes a long time when clamping in batches and is inconvenient to use. Utility Model Content

[0005] The purpose of this utility model is to provide a fixture for irregularly shaped parts, which solves the problem that the clamping rod in the existing clamping mechanism needs to be adjusted separately with a locking screw, and the time required for batch clamping is long.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model relates to a clamp for irregularly shaped parts, comprising a base, with side plates on both sides of the base. An electric push rod is mounted at one end of each side plate, and the output ends of the two electric push rods penetrate the side plates and are mounted on vertical plates. Several placement slots are formed on the upper surface of the vertical plates. A cover plate is hinged to one end of the vertical plates, and an opening is formed on the upper surface of the cover plate. A rack is slidably connected inside the opening, and a pressing plate is mounted at the lower end of the rack. A clamping structure is installed inside each placement slot, comprising a fixed cylinder installed inside the placement slot. A clamping rod is slidably connected inside the fixed cylinder, and a through hole is formed on the outer surface of the fixed cylinder. A pressing block is provided on the lower surface of the pressing plate, and the pressing block is located inside the through hole.

[0008] Furthermore, two blocks are installed on the upper surface of the cover plate, and a rotating shaft is rotatably connected between the two blocks. A gear is installed on the outer surface of the rotating shaft, and the gear meshes with a rack. One end of the rotating shaft passes through one of the blocks and is equipped with a knob.

[0009] Furthermore, one end of the cover plate is provided with a first connecting plate, and one end of the vertical plate is provided with a second connecting plate. The second connecting plate is located at the lower end of the first connecting plate. The upper surfaces of both the first connecting plate and the second connecting plate are provided with threaded holes, and the internal threads of the threaded holes are connected to hand-tightening bolts.

[0010] Furthermore, the lower surface of the cover plate is provided with a plurality of fixing grooves, the number of fixing grooves being the same as the number of placement grooves. The inner surface of the fixing groove is provided with anti-slip stripes, and the outer surface of the anti-slip stripes abuts against the outer surface of the fixing cylinder. One end of the clamping rod is provided with an installation groove, and a rubber head is installed inside the installation groove. A spring is installed on the inner surface of the fixing cylinder, and the other end of the spring is installed on the outer surface of the clamping rod.

[0011] Furthermore, a slide rail and a placement seat are installed on the upper surface of the base, and a slider is installed on the lower surface of the vertical plate, the slider being slidably connected to the outer surface of the slide rail.

[0012] Furthermore, a protective shell is installed on the outer surface of the cover plate, and the rack, gear and shaft are all located inside the protective shell.

[0013] This utility model has the following beneficial effects:

[0014] (1) By rotating the knob, the knob drives the rotating shaft and gear to rotate. Since the gear meshes with the rack, the rotational motion is converted into the linear motion of the rack. The rack slides down or up along the opening of the cover plate. When the rack moves down, the pressing plate at the lower end of the rack moves down with the rack. The pressing block on its surface is inserted into the through hole of the side wall of the fixed cylinder and directly abuts against the outer surface of the clamping rod. In this process, the pressing block locks multiple clamping rods simultaneously through rigid contact, preventing them from sliding axially in the corresponding fixed cylinder. There is no need to lock each clamping rod separately, which achieves a better use effect.

[0015] (2) By rotating the hand-tightening bolt, the hand-tightening bolt is disengaged from the inside of the threaded hole, thereby canceling the fixation between the first connecting plate and the second connecting plate. Then, the cover plate can be rotated so that the cover plate rotates axially outward with the hinge point with the vertical plate as the center, thereby canceling the fixation of the clamping structure on the cover plate. Then, the clamping structure placed in the slot can be taken out and replaced, achieving the effect of easy replacement.

[0016] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of a partial structure of the present invention. Figure 1 ;

[0020] Figure 3 This is a schematic diagram of a partial structure of the present invention. Figure 2 ;

[0021] Figure 4 This is a schematic diagram of a partial structure of the present invention. Figure 3 ;

[0022] Figure 5 This is a schematic diagram of the extrusion plate and clamping structure of this utility model;

[0023] Figure 6 This is a cross-sectional view of the clamping structure of this utility model;

[0024] The attached diagram lists the components represented by each number as follows:

[0025] In the diagram: 1. Base; 101. Side plate; 2. Electric push rod; 3. Vertical plate; 301. Second connecting plate; 4. Cover plate; 401. First connecting plate; 402. Fixing groove; 5. Rack; 6. Extrusion plate; 601. Extrusion block; 7. Clamping structure; 701. Fixing cylinder; 702. Clamping rod; 703. Through hole; 704. Rubber head; 705. Spring; 8. Stop block; 9. Rotating shaft; 10. Gear; 11. Knob; 12. Hand-tightening bolt; 13. Slide rail; 14. Placement seat; 15. Slider; 16. Protective shell. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figures 1-6As shown, this utility model is a clamp for irregularly shaped parts, including a base 1, with side plates 101 on both sides of the base 1, and an electric push rod 2 installed at one end of each side plate 101. The output ends of the two electric push rods 2 pass through the side plates 101 and are installed with vertical plates 3. Several placement slots are opened on the upper surface of the vertical plates 3, and a cover plate 4 is hinged to one end of the vertical plates 3. An opening is opened on the upper surface of the cover plate 4, and a rack 5 is slidably connected inside the opening. A pressing plate 6 is installed at the lower end of the rack 5. A clamping structure 7 is installed inside each placement slot. The clamping structure 7 includes a fixed cylinder 701, which is installed inside the placement slot. A clamping rod 702 is slidably connected inside the fixed cylinder 701. A through hole 703 is opened on the outer surface of the fixed cylinder 701. A pressing block 601 is provided on the lower surface of the pressing plate 6, and the pressing block 601 is located inside the through hole 703.

[0028] The upper surface of the base 1 is equipped with a slide rail 13 and a placement seat 14, and the lower surface of the vertical plate 3 is equipped with a slider 15, which is slidably connected to the outer surface of the slide rail 13.

[0029] When in use, the workpiece to be fixed is first placed on the upper surface of the placement seat 14, and then the two electric push rods 2 are activated, so that the output end of the electric push rods 2 pushes the vertical plate 3 to move horizontally towards the workpiece via the slider 15 along the slide rail 13. When the vertical plate 3 moves, the vertical plate 3 drives the clamping structure 7 to approach the workpiece.

[0030] The lower surface of the cover plate 4 is provided with a number of fixing grooves 402, the number of fixing grooves 402 is the same as the number of placement grooves. The inner surface of the fixing groove 402 is provided with anti-slip stripes, and the outer surface of the anti-slip stripes abuts against the outer surface of the fixing cylinder 701. One end of the clamping rod 702 is provided with an installation groove, and a rubber head 704 is installed inside the installation groove. A spring 705 is installed on the inner surface of the fixing cylinder 701, and the other end of the spring 705 is installed on the outer surface of the clamping rod 702.

[0031] When the rubber heads 704 in the multiple clamping structures 7 come into contact with the workpiece surface, the rubber heads 704 are squeezed by external force according to the shape of the irregular workpiece, causing the clamping rod 702 to slide into the fixed cylinder 701 and gradually compress the spring 705.

[0032] Two blocks 8 are installed on the upper surface of the cover plate 4. A rotating shaft 9 is rotatably connected between the two blocks 8. A gear 10 is installed on the outer surface of the rotating shaft 9. The gear 10 meshes with the rack 5. One end of the rotating shaft 9 passes through one of the blocks 8 and is equipped with a knob 11.

[0033] After all the rubber heads 704 in the clamping structures 7 have contacted the workpiece surface, the knob 11 is turned so that the knob 11 drives the rotating shaft 9 and the gear 10 to rotate. Since the gear 10 meshes with the rack 5, the rotational motion is converted into the linear motion of the rack 5. The rack 5 slides down or up along the opening of the cover plate 4. When the rack 5 moves down, the pressing plate 6 at the lower end of the rack 5 moves down with the rack 5. The pressing block 601 on its surface is inserted into the through hole 703 on the side wall of the fixed cylinder 701 and directly abuts against the outer surface of the clamping rod 702. In this process, the pressing block 601 locks multiple clamping rods 702 simultaneously through rigid contact, preventing them from sliding axially in the corresponding fixed cylinder 701. It is not necessary to lock each clamping rod 702 individually, which achieves a better use effect.

[0034] One end of the cover plate 4 is provided with a first connecting plate 401, and one end of the vertical plate 3 is provided with a second connecting plate 301. The second connecting plate 301 is located at the lower end of the first connecting plate 401. The upper surfaces of the first connecting plate 401 and the second connecting plate 301 are both provided with threaded holes, and the threaded holes are internally connected with hand-tightening bolts 12.

[0035] By rotating the hand-tightening bolt 12, the hand-tightening bolt 12 is disengaged from the inside of the threaded hole, thereby removing the fixation between the first connecting plate 401 and the second connecting plate 301. Then, the cover plate 4 can be rotated so that the cover plate 4 rotates axially outward with the hinge point with the vertical plate 3 as the center, thereby removing the fixation of the cover plate 4 to the clamping structure 7. Then, the clamping structure 7 placed in the slot can be taken out and replaced, achieving the effect of easy replacement.

[0036] A protective shell 16 is also installed on the outer surface of the cover plate 4, and the rack 5, gear 10 and shaft 9 are all located inside the protective shell 16;

[0037] The protective shell 16 can protect the rack 5, gear 10 and shaft 9, preventing them from being affected by external factors.

[0038] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0040] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0041] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0042] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0043] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A fixture for irregularly shaped parts, comprising a base (1), wherein side plates (101) are provided on both sides of the base (1), and an electric push rod (2) is installed at one end of each of the two side plates (101), and the output ends of the two electric push rods (2) pass through the side plates (101) and are equipped with vertical plates (3), characterized in that: The upper surface of the vertical plate (3) is provided with several placement slots, and a cover plate (4) is hinged to one end of the vertical plate (3). The upper surface of the cover plate (4) is provided with an opening, and a rack (5) is slidably connected inside the opening. A pressing plate (6) is installed at the lower end of the rack (5), and a clamping structure (7) is installed inside each of the placement slots. The clamping structure (7) includes a fixed cylinder (701), which is installed inside the placement groove. A clamping rod (702) is slidably connected inside the fixed cylinder (701), and a through hole (703) is provided on the outer surface of the fixed cylinder (701). The lower surface of the extrusion plate (6) is provided with an extrusion block (601), which is located inside the through hole (703).

2. The fixture for irregularly shaped parts according to claim 1, characterized in that: Two blocks (8) are installed on the upper surface of the cover plate (4), and a rotating shaft (9) is rotatably connected between the two blocks (8). A gear (10) is installed on the outer surface of the rotating shaft (9), and the gear (10) meshes with the rack (5). One end of the rotating shaft (9) passes through one of the stops (8) and is fitted with a knob (11).

3. The fixture for irregularly shaped parts according to claim 1, characterized in that: One end of the cover plate (4) is provided with a first connecting plate (401), and one end of the vertical plate (3) is provided with a second connecting plate (301). The second connecting plate (301) is located at the lower end of the first connecting plate (401). The upper surfaces of the first connecting plate (401) and the second connecting plate (301) are both provided with threaded holes, and the threaded holes are internally connected with hand-tightening bolts (12).

4. A fixture for irregularly shaped parts according to claim 1, characterized in that: The lower surface of the cover plate (4) is provided with a number of fixing grooves (402), the number of fixing grooves (402) is the same as the number of placement grooves, the inner surface of the fixing groove (402) is provided with anti-slip stripes, the outer surface of the anti-slip stripes abuts against the outer surface of the fixing cylinder (701), one end of the clamping rod (702) is provided with an installation groove, a rubber head (704) is installed inside the installation groove, a spring (705) is installed on the inner surface of the fixing cylinder (701), and the other end of the spring (705) is installed on the outer surface of the clamping rod (702).

5. A fixture for irregularly shaped parts according to claim 1, characterized in that: The upper surface of the base (1) is equipped with a slide rail (13) and a placement seat (14), and the lower surface of the vertical plate (3) is equipped with a slider (15), which is slidably connected to the outer surface of the slide rail (13).

6. A fixture for irregularly shaped parts according to claim 2, characterized in that: The outer surface of the cover plate (4) is also fitted with a protective shell (16), and the rack (5), gear (10) and shaft (9) are all located inside the protective shell (16).

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