Fixing mechanical clamp for machining

Abstract

The utility model relates to a fixed mechanical clamp for machining. The fixed mechanical clamp comprises a bottom plate, at least two side plates, a screw rod, a movable plate and two clamping pieces, the at least two side plates are arranged on the upper surface of the bottom plate in a bilateral symmetry mode, the screw rod is connected to the interior of one side plate in a threaded mode, and the movable plate is rotationally connected to the end, close to the other side plate, of the screw rod. According to the fixed mechanical clamp for machining, by designing a combined structure of the two side plates, the screw rod, the movable plate and the clamping piece, stable clamping of irregular-shaped parts is achieved, clamping plates in the clamping piece can be adjusted in a self-adaptive mode according to the shapes of the parts, it is guaranteed that the parts cannot slide off or loosen in the machining process, and the machining quality is improved. The clamping piece can be tightly attached to the outer surface of the part through the steel ball layer and the slidable clamping plate in the clamping piece, accurate clamping can be achieved no matter how the shape of the part is complex, meanwhile, the friction force between the clamping plate and the part is increased through the sawtooth-shaped design of the clamping plate, and the clamping stability is further improved.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, specifically to a fixed mechanical fixture for machining. Background Technology

[0002] Machining fixtures are devices used in the mechanical manufacturing process to install and fix workpieces, keep them in the correct position, and ensure that the position of the workpieces does not change during the machining process.

[0003] Currently, in the field of machining, commonly used fixtures such as bench vises and chucks are typically used to clamp and fix parts with regular outer surfaces. Bench vises, with their powerful clamping force and ease of operation, are widely used in assembly, grinding, and some simple machining operations. Chucks, especially three-jaw chucks and four-jaw chucks, perform excellently in lathe machining, capable of automatically centering and clamping round workpieces, or clamping irregular but approximately round workpieces by manually adjusting the position of each jaw.

[0004] However, these traditional clamping devices fall short when dealing with parts with irregularly shaped outer surfaces. Irregularly shaped parts include curved surfaces, uneven edges, and complex geometric structures, making it difficult for bench vises or chucks to find a suitable clamping point or surface to stably hold these parts. Specifically, the jaws of a bench vise are usually flat and cannot tightly fit the irregular outer surface of the part, which may cause the part to slip or shift during machining. Similarly, the jaws of a chuck are designed to clamp round or near-round workpieces. For irregularly shaped parts, the jaws may not be able to effectively grasp or support the part, leading to decreased machining accuracy or even damage to the part or the clamping device. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a fixed mechanical fixture for machining, which solves the problems mentioned in the background section.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a fixed mechanical clamp for machining, comprising a base plate, at least two side plates, a screw, a movable plate, and two clamping components;

[0007] At least two of the side plates are symmetrically arranged on the upper surface of the base plate. The screw is threadedly connected to the inside of one of the side plates. The movable plate is rotatably connected to the end of the screw near the other side plate, and the movable plate is slidably connected to the base plate.

[0008] The two clamping members are respectively located on one side opposite to the side plate and the other side plate;

[0009] The clamping member on the left side includes a housing mounted on the side of the side plate facing the movable plate. The housing is hollow inside and its upper surface and the side facing the movable plate are both missing.

[0010] At least one horizontal plate is provided through the front and rear sides of the inner wall of the shell. Several clamping plates are slidably connected to the outer side of the horizontal plate. A layer of steel balls is filled between the clamping plates and the left side of the inner wall of the shell.

[0011] A transparent acrylic sheet is bolted to the upper end face of the housing.

[0012] Furthermore, several of the clamping plates are attached to each other, with the frontmost clamping plate and the rearmost clamping plate respectively attached to the front and rear sides of the inner wall of the housing.

[0013] Furthermore, corresponding to the horizontal plate, a square opening is formed inside the clamping plate along the Y-axis direction;

[0014] Furthermore, the length of the square opening in the Y-axis direction is twice the length of the horizontal plate in the Y-axis direction.

[0015] Furthermore, a certain amount of space is maintained between the upper surface of the steel ball layer and the transparent acrylic plate.

[0016] Furthermore, the side of the clamp away from the steel ball layer is serrated.

[0017] Furthermore, an adjustment assembly is provided below the base plate, the adjustment assembly including a mounting plate located below the base plate;

[0018] A drive shaft is rotatably connected to the upper surface of the mounting plate, a drive plate is mounted on the top end of the drive shaft, a swing assembly is provided on the upper surface of the drive plate, and the base plate is connected to the mounting plate through the swing assembly.

[0019] A motor with its output end extending through and above the mounting plate is installed at the bottom of the mounting plate. The transmission shaft is connected to the output end of the motor via a gear assembly to drive the swing assembly and the clamping parts on the base plate to rotate in the XY plane.

[0020] Furthermore, the swing assembly includes a mounting base mounted on the transmission plate, a rotating shaft rotatably connected inside the mounting base via a bearing, a connecting seat fixedly sleeved on the outer side of the rotating shaft, and the base plate mounted on the connecting seat;

[0021] A worm gear is fitted on the outer side of the rotating shaft, and two bearing seats are provided on the upper surface of the transmission plate. The same worm is rotatably connected inside the two bearing seats. The worm meshes with the worm gear so that when the worm rotates, it drives the rotating shaft and the base plate on the connecting seat to rotate on the ZX surface.

[0022] Furthermore, the gear assembly includes a driving gear and a driven gear, which are respectively fitted onto the outer side of the motor output end and the outer side of the transmission shaft.

[0023] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0024] 1. This machining fixture, through its combined structure of side plates, screws, a movable plate, and clamping components, achieves stable clamping of irregularly shaped parts. The internal clamping plates can adaptively adjust according to the part's shape, ensuring that the part will not slip or loosen during machining. The steel ball layer and sliding clamping plate design inside the clamping components allow them to closely conform to the outer surface of the part, achieving precise clamping regardless of the part's complex shape. Simultaneously, the serrated design of the clamping plates increases the friction between the clamping plate and the part, further enhancing clamping stability.

[0025] 2. This machining fixture has an adjustment assembly at the bottom, including a motor, gear assembly, transmission shaft, and swing assembly, which allows the fixture to rotate in the XY and ZX planes. This enables flexible adjustment of the machining angle of the fixed part, meeting the needs of different machining processes. The elastic element inside the clamping plate allows the clamping plate to automatically reset after the part is removed, facilitating the subsequent clamping and fixing of other parts and improving work efficiency. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of this utility model;

[0027] Figure 2 This is a schematic diagram of the clamping component structure of this utility model;

[0028] Figure 3 This is a schematic diagram of the disassembled structure of the clamping component of this utility model;

[0029] Figure 4 This is a schematic diagram of the adjustment component structure of this utility model;

[0030] Figure 5 This is a front view schematic diagram of the adjustment component of this utility model.

[0031] In the diagram: 1. Base plate; 2. Side plate; 3. Screw; 4. Moving plate; 5. Clamping component; 501. Housing; 502. Horizontal plate; 503. Clamping plate; 504. Steel ball layer; 505. Transparent acrylic sheet; 506. Elastic component; 6. Adjustment assembly; 601. Mounting plate; 602. Drive shaft; 603. Motor; 604. Drive plate; 605. Mounting base; 606. Rotating shaft; 607. Connecting base; 608. Worm gear; 609. Bearing housing; 610. Worm; 611. Driving gear; 612. Driven gear. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.

[0033] Please see Figure 1 This embodiment provides a fixed mechanical fixture for machining, used to clamp irregularly shaped parts, improving the stability of the parts during clamping, and facilitating the adjustment of the machining angle after the parts are fixed.

[0034] Specifically, it includes a base plate 1, at least two side plates 2, a screw 3, a movable plate 4, and two clamping parts 5;

[0035] At least two side plates 2 are symmetrically arranged on the upper surface of the base plate 1. A screw 3 is threadedly connected to the inside of one of the side plates 2. A movable plate 4 is rotatably connected to the end of the screw 3 near the other side plate 2, and the movable plate 4 is slidably connected to the base plate 1. Two clamping members 5 are respectively arranged on the side opposite to the side plate 2 and the other side plate 2.

[0036] In actual use, the part is placed between the two clamping parts 5. By rotating the screw 3, the moving plate 4 and the clamping parts 5 connected to it are pushed to move towards the part, so that the two clamping parts 5 are attached to the outer surface of the part, thereby fixing the part. At the same time, after the two clamping parts 5 are attached to the outer surface of the part, the shape of the clamping parts 5 on the side that is attached to the part will be automatically adjusted according to the shape of the outer surface of the part, so as to adapt to the shape of the outer surface of the part.

[0037] Please see Figure 2-3 In order to adapt to the shape of the outer surface of the part, the left clamping member 5 in this embodiment includes a housing 501 installed on the side of the side plate 2 facing the moving plate 4. The housing 501 is hollow inside and its upper surface and the side facing the moving plate 4 are missing.

[0038] At least one horizontal plate 502 is provided through the front and rear sides of the inner wall of the housing 501. Several clamping plates 503 are slidably connected to the outer side of the horizontal plate 502. A steel ball layer 504 is filled between the clamping plates 503 and the left side of the inner wall of the housing 501. A transparent acrylic plate 505 is installed on the upper end face of the housing 501 by bolts.

[0039] In actual use, after the clamping plates 503 on both sides are tightly attached to the outer surface of the part, the clamping plates 503 on both sides are adaptively adjusted according to the specific shape of the part, and some of the clamping plates 503 on both sides will move in opposite directions. This movement process not only tightly fits the outline of the part, but also, through the squeezing action, causes the steel ball layer 504 to dynamically converge towards the direction of the unmoved clamping plate 503, forming a tight support structure. At the same time, as the clamping plates 503 move, the internal space of the housing 501 gradually decreases, and the steel ball layer 504 is completely and evenly filled into the housing 501 and tightly attached to the lower surface of the transparent acrylic plate 505, ensuring that there is no extra space inside the housing 501 for the clamping plates 503 to continue moving, thereby achieving precise clamping and fixing of the outer surface of the part.

[0040] In addition, corresponding to the horizontal plate 502, a square opening is formed inside the clamping plate 503 along the Y-axis direction; and the length of the square opening in the Y-axis direction is twice the length of the horizontal plate 502 in the Y-axis direction. During the movement of the clamping plate 503, it also slides on the outside of the horizontal plate 502. In this embodiment, the preferred number of horizontal plates 502 is two, which are arranged vertically and horizontally. The two horizontal plates 502 effectively restrict the movement of the clamping plate 503, thereby improving the stability of the clamping plate 503 during movement.

[0041] It should be noted that several clamping plates 503 are attached to each other, with the frontmost clamping plate 503 and the rearmost clamping plate 503 attached to the front and rear sides of the inner wall of the housing 501, respectively.

[0042] In a further preferred embodiment, to ensure that the left and right clamping plates 503 can automatically reset after the part is removed from between them, so as to facilitate the clamping and fixing of other parts, an elastic member 506 is provided between the rear side of the inner wall of the square opening and the side opposite to the horizontal plate 502. When the clamping plate 503 moves toward the steel ball layer 504, it will stretch the elastic member 506, so that the elastic member 506 has a certain elastic potential energy. When the part is removed from between the left and right clamping plates 503, the elastic member 506 will automatically spring back to reset due to the elastic force.

[0043] In addition, in order to provide space for the steel ball layer 504 to move after extrusion, a certain distance is maintained between the upper surface of the steel ball layer 504 and the transparent acrylic plate 505 in this embodiment. At the same time, the diameter of the steel balls inside the steel ball layer 504 in this embodiment does not exceed three millimeters.

[0044] Furthermore, in order to increase the friction between the clamping plate 503 and the part, the side of the clamping plate 503 away from the steel ball layer 504 in this embodiment is serrated.

[0045] In actual setup, the side of the clamping plate 503 away from the steel ball layer 504 is designed to be serrated, which increases the contact area and friction between the clamping plate 503 and the part, thereby improving the stability and firmness of clamping and ensuring that the part is not easy to slip or loosen during processing or transportation.

[0046] Please see Figure 4-5 In order to facilitate the adjustment of the machining angle after the parts are fixed in order to adapt to different machining processes, an adjustment component 6 is also provided below the base plate 1 in this embodiment. The adjustment component 6 includes a mounting plate 601 located below the base plate 1.

[0047] A drive shaft 602 is rotatably connected to the upper surface of the mounting plate 601. A drive plate 604 is mounted on the top of the drive shaft 602. A swing assembly is provided on the upper surface of the drive plate 604. The base plate 1 is connected to the mounting plate 601 through the swing assembly.

[0048] A motor 603 with its output end extending through and above the mounting plate 601 is mounted on the bottom of the mounting plate 601. The drive shaft 602 is connected to the output end of the motor 603 via a gear assembly to drive the swing assembly and the clamping member 5 on the base plate 1 to rotate in the XY plane.

[0049] In detail, the gear assembly includes a driving gear 611 and a driven gear 612, which are respectively fitted onto the outer side of the output end of the motor 603 and the outer side of the transmission shaft 602.

[0050] In actual setup, the output of motor 603 rotates to drive the drive gear 611 connected to it. The drive gear 611 meshes with the driven gear 612, so that when the drive gear 611 rotates, it can drive the driven gear 612 and the transmission shaft 602 inside it to rotate. The transmission shaft 602 drives the transmission plate 604 on its upper end face, as well as the swing assembly and the base plate 1 to rotate on the XY plane, thereby adjusting the position of the part on the XY plane.

[0051] Specifically, the swing assembly in this embodiment includes a mounting base 605 mounted on a transmission plate 604. A rotating shaft 606 is rotatably connected inside the mounting base 605 via a bearing. A connecting seat 607 is fixedly sleeved on the outer side of the rotating shaft 606. The base plate 1 is mounted on the connecting seat 607.

[0052] A worm gear 608 is sleeved on the outside of the rotating shaft 606. Two bearing seats 609 are provided on the upper surface of the transmission plate 604. The same worm 610 is rotatably connected inside the two bearing seats 609. The worm 610 meshes with the worm gear 608 so that when the worm 610 rotates, it drives the rotating shaft 606 and the base plate 1 on the connecting seat 607 to rotate on the ZX surface.

[0053] In actual use, rotating the worm gear 610 drives the worm wheel 608 and the rotating shaft 606 to rotate, so that the connecting seat 607, which is driven by the rotating shaft 606, is also in a state of rotation. The connecting seat 607 drives the base plate 1 on its upper surface to rotate on the ZX surface, thereby adjusting the angle of the fixed part. At the same time, combined with the motor 603, gear assembly and transmission shaft 602, it can drive the tilted part to rotate, further increasing the angle range of the fixed part.

[0054] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fixed mechanical fixture for machining, characterized in that: It includes a base plate (1), at least two side plates (2), a screw (3), a movable plate (4), and two clamping parts (5); At least two side plates (2) are symmetrically arranged on the upper surface of the base plate (1). The screw (3) is threadedly connected to the inside of one of the side plates (2). The movable plate (4) is rotatably connected to one end of the screw (3) near the other side plate (2), and the movable plate (4) is slidably connected to the base plate (1). The two clamping members (5) are respectively located on the side opposite to the side plate (2) and the other side plate (2); The clamping member (5) on the left side includes a housing (501) installed on the side of the side plate (2) facing the moving plate (4). The housing (501) is hollow inside and its upper surface and the side facing the moving plate (4) are missing. At least one horizontal plate (502) is provided through the front and rear sides of the inner wall of the housing (501). Several clamping plates (503) are slidably connected to the outer side of the horizontal plate (502). A layer of steel balls (504) is filled between the several clamping plates (503) and the left side of the inner wall of the housing (501). A transparent acrylic plate (505) is bolted to the upper end face of the housing (501).

2. The fixed mechanical fixture for machining according to claim 1, characterized in that: Several clamping plates (503) are attached to each other, with the frontmost clamping plate (503) and the rearmost clamping plate (503) respectively attached to the front and rear sides of the inner wall of the housing (501).

3. A fixed mechanical fixture for machining according to claim 1, characterized in that: Corresponding to the horizontal plate (502), a square opening is formed inside the clamping plate (503) along the Y-axis direction; Furthermore, the length of the square opening in the Y-axis direction is twice the length of the horizontal plate (502) in the Y-axis direction.

4. A fixed mechanical fixture for machining according to claim 1, characterized in that: There is a certain distance between the upper surface of the steel ball layer (504) and the transparent acrylic plate (505).

5. A fixed mechanical fixture for machining according to claim 1, characterized in that: The side of the clamp (503) away from the steel ball layer (504) is serrated.

6. A fixed mechanical fixture for machining according to claim 1, characterized in that: An adjustment component (6) is also provided below the base plate (1), and the adjustment component (6) includes a mounting plate (601) located below the base plate (1); A drive shaft (602) is rotatably connected to the upper surface of the mounting plate (601), and a drive plate (604) is mounted on the top end of the drive shaft (602). A swing assembly is provided on the upper surface of the drive plate (604), and the base plate (1) is connected to the mounting plate (601) through the swing assembly. The bottom of the mounting plate (601) is equipped with a motor (603) whose output end extends through and above the mounting plate (601). The transmission shaft (602) is connected to the output end of the motor (603) through a gear assembly to drive the swing assembly and the clamping member (5) on the base plate (1) to rotate in the XY plane.

7. A fixed mechanical fixture for machining according to claim 6, characterized in that: The swing assembly includes a mounting base (605) mounted on the transmission plate (604), a rotating shaft (606) is rotatably connected inside the mounting base (605) via a bearing, a connecting seat (607) is fixedly sleeved on the outside of the rotating shaft (606), and the base plate (1) is mounted on the connecting seat (607). A worm gear (608) is sleeved on the outside of the rotating shaft (606). Two bearing seats (609) are provided on the upper surface of the transmission plate (604). The two bearing seats (609) are rotatably connected to the same worm (610). The worm (610) meshes with the worm gear (608) so that when the worm (610) rotates, it drives the rotating shaft (606) and the base plate (1) on the connecting seat (607) to rotate on the ZX surface.

8. A fixed mechanical fixture for machining according to claim 7, characterized in that: The gear assembly includes a driving gear (611) and a driven gear (612), which are respectively fitted onto the outer side of the output end of the motor (603) and the outer side of the transmission shaft (602).

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