A zero-positioning tooling fixture convenient to adjust

Abstract

The utility model relates to zero point frock clamp technical field, concretely relates to a zero point positioning frock clamp convenient to adjust, including locating seat, the top of locating seat is provided with the mounting frame, the inside both sides of mounting frame all movably set up the sliding plate, the top both sides of sliding plate all are provided with the limit block, the top of limit block is provided with the adjusting frame, the inside both sides of adjusting frame all movably set up the fixture body for clamping work piece, when the whole position of adjusting frame is adjusted to adapt the clamping demand of different size work piece, rotates the handle, handle drives the bidirectional screw rod to rotate in the adjusting frame inside. Because the thread rotation direction of bidirectional screw rod both ends is opposite, its rotation will make the threaded block of setting along the screw rod axis do the opposite or opposite movement, make the fixture can adapt the clamping position demand of different size work piece, need not to dismantle the fixture and reinstallation.

Description

Technical Field

[0001] This utility model relates to the field of zero-point tooling fixture technology, specifically to a zero-point positioning tooling fixture that is easy to adjust. Background Technology

[0002] A zero-point positioning fixture is a unique positioning and locking device that keeps the workpiece at a constant zero point while moving it from one workstation to another, from one process to another, or from one machine tool to another. This saves auxiliary time spent re-aligning the zero point, ensures work continuity, and improves work efficiency.

[0003] Chinese Patent Publication No. CN215588463U discloses a zero-point positioning fixture, including a zero-point positioning fixture body. Mounting blocks are symmetrically fixedly mounted on the lower surface of the zero-point positioning fixture body. Support legs are rotatably mounted within each mounting block. Mounting grooves are formed through the outer surfaces of each support leg, and first rotating blocks are rotatably mounted within each mounting groove. Connecting columns are fixedly mounted on the inner surfaces of each first rotating block. Second rotating blocks are fixedly mounted at one end of each connecting column. A fixing plate is fixedly mounted between the four second rotating blocks. Connecting pieces are rotatably mounted on the lower outer surfaces of each support leg. A screw is threaded through the upper surface of the fixing plate. A driven bevel gear and a first bearing are fixedly mounted on the outer surface of the screw. The first bearing is embedded and fixedly mounted on the lower surface of the zero-point positioning fixture body. A transmission device is fixedly mounted on the lower surface of the zero-point positioning fixture body. This invention allows for manual raising and lowering of the height of the zero-point positioning fixture body.

[0004] The aforementioned device cannot adjust the distance between the zero-point positioning fixtures when clamping workpieces. This makes it quite inconvenient to disassemble the zero-point positioning fixtures and readjust their installation positions when positioning and clamping objects of different sizes. Utility Model Content

[0005] To address the aforementioned issues, an easily adjustable zero-point positioning fixture is provided. By adjusting the overall position of the adjustment frame to accommodate the clamping requirements of workpieces of different sizes, rotating the handle causes the bidirectional screw to rotate within the adjustment frame. Because the threads at both ends of the bidirectional screw rotate in opposite directions, its rotation causes the threaded blocks fitted at both ends to move in opposite directions along the screw axis, allowing the fixture to adapt to the clamping position requirements of workpieces of different sizes without the need for disassembly and reinstallation.

[0006] To address the problems of existing technologies, this utility model provides an easily adjustable zero-point positioning fixture, including a positioning base. The top of the positioning base is provided with a mounting frame. Sliding plates are movably arranged on both sides of the interior of the mounting frame. Limiting blocks are provided on both sides of the top of the sliding plates. An adjustment frame is provided on the top of the limiting blocks. A fixture body for clamping the workpiece is movably arranged on both sides of the interior of the adjustment frame.

[0007] Preferably, the adjusting frame is rotatably provided with a bidirectional screw, one end of which extends to the outside of the mounting frame and is provided with a handle. Both ends of the bidirectional screw are threaded with threaded blocks, and the sidewalls of the threaded blocks are rotatably provided with connecting blocks. One end of the connecting block is rotatably connected to the sidewall of the sliding plate.

[0008] Preferably, the adjusting frame is provided with a rotating rod inside, one end of the rotating rod is provided with a gear, and the other end of the rotating rod is provided with a rotating block.

[0009] Preferably, the adjustment frame has two racks that mesh with gears inside, and the tops of the two racks are connected to the bottom of the clamp body via support rods.

[0010] Preferably, each of the two racks has a guide block on its sidewall, and the inner wall of the mounting frame has a guide groove for the guide block to move.

[0011] Preferably, the rotating rod is provided with a sliding ring on its outer side, the outer wall of the sliding ring is provided with symmetrical pulling blocks, the side wall of the pulling blocks is provided with positioning pins, and the side wall of the mounting frame is provided with a plurality of positioning holes that are adapted to the positioning pins.

[0012] Preferably, a U-shaped rod is movably provided inside the rotating block, and one end of the U-shaped rod is connected to the side wall of the pulling block.

[0013] Preferably, a compression spring is sleeved on the outside of the U-shaped rod, one end of the compression spring is connected to the side wall of the pulling block, and the other end of the compression spring is connected to the side wall of the rotating block.

[0014] The advantages of this utility model compared to the prior art are:

[0015] When adjusting the overall position of the adjustment frame to accommodate the clamping requirements of workpieces of different sizes, the handle is rotated, which drives the bidirectional screw to rotate inside the adjustment frame. Since the threads at both ends of the bidirectional screw turn in opposite directions, its rotation causes the threaded blocks fitted at both ends to move in opposite directions along the screw axis, allowing the fixture to adapt to the clamping position requirements of workpieces of different sizes without the need to disassemble and reinstall the fixture. Attached Figure Description

[0016] Figure 1This is a schematic diagram of the overall structure of a zero-point positioning fixture that is easy to adjust.

[0017] Figure 2 This is a schematic diagram of the internal structure of the mounting frame in a zero-point positioning fixture that is easy to adjust.

[0018] Figure 3 This is a structural diagram of some components in a zero-point positioning fixture that is easy to adjust.

[0019] Figure 4 This is a schematic diagram of the gear and rack structure in a zero-point positioning fixture that is easy to adjust.

[0020] Figure 5 yes Figure 4 A magnified structural diagram of point A in the middle.

[0021] Figure 6 This is a schematic diagram of the sliding ring in a zero-point positioning fixture that is easy to adjust.

[0022] The following are the labels in the diagram: 1. Positioning seat; 2. Mounting frame; 3. Bidirectional screw; 4. Adjusting frame; 5. Fixture body; 6. Rotary handle; 7. Threaded block; 8. Connecting block; 9. Sliding plate; 10. Limiting block; 11. Rack; 12. Gear; 13. Guide block; 14. Rotating rod; 15. Sliding ring; 16. Pulling block; 17. Rotating block; 18. U-shaped rod; 19. Compression spring; 20. Positioning pin. Detailed Implementation

[0023] To further understand the features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments.

[0024] like Figures 1 to 6 As shown, this utility model provides:

[0025] An easily adjustable zero-point positioning fixture includes a positioning seat 1, a mounting frame 2 on the top of the positioning seat 1, sliding plates 9 movably arranged on both sides of the interior of the mounting frame 2, limit blocks 10 on both sides of the top of the sliding plates 9, an adjustment frame 4 on the top of the limit blocks 10, and a fixture body 5 for clamping the workpiece movably arranged on both sides of the interior of the adjustment frame 4.

[0026] The positioning seat 1 provides a fixed base for the entire tooling fixture. The mounting frame 2 serves as the load-bearing frame for the core moving parts. The sliding plates 9, which are movably arranged on both sides inside the mounting frame 2, can move along a preset trajectory inside the mounting frame 2. The limiting blocks 10 on both sides of the top of the sliding plates 9 are used to limit the position of the adjusting frame 4 and prevent the adjusting frame 4 from shifting during operation. The fixture body 5, which is movably arranged on both sides inside the adjusting frame 4, is the part that directly contacts the workpiece and achieves clamping.

[0027] like Figure 2 As shown, a bidirectional screw 3 is rotatably provided inside the adjusting frame 4. One end of the bidirectional screw 3 extends to the outside of the mounting frame 2 and is provided with a handle 6. Both ends of the bidirectional screw 3 are threaded with threaded blocks 7. A connecting block 8 is rotatably provided on the side wall of the threaded block 7. One end of the connecting block 8 is rotatably connected to the side wall of the sliding plate 9.

[0028] The bidirectional screw 3 is rotatably installed inside the adjusting frame 4, with the threads at both ends rotating in opposite directions; a handle 6 is provided at one end of the bidirectional screw 3 extending to the outside of the mounting frame 2, and threaded blocks 7 fitted at both ends can move along the axis of the bidirectional screw 3; a connecting block 8 is rotatably connected to the side wall of the threaded block 7, and the other end is rotatably connected to the side wall of the sliding plate 9.

[0029] When the overall position of the adjusting frame 4 needs to be adjusted to accommodate the clamping requirements of workpieces of different sizes, the handle 6 is rotated, which drives the bidirectional screw 3 to rotate inside the adjusting frame 4. Since the threads at both ends of the bidirectional screw 3 turn in opposite directions, its rotation causes the threaded blocks 7 fitted at both ends to move in opposite directions along the screw axis. The movement of the threaded blocks 7 is transmitted to the sliding plate 9 through the rotating connecting block 8, pushing the sliding plate 9 to move along a preset trajectory inside the mounting frame 2. The movement of the sliding plate 9 causes the top limiting block 10 and the adjusting frame 4 to move synchronously, ultimately achieving the adjustment of the overall position of the adjusting frame 4 and the internal fixture body 5, so that the fixture can adapt to the clamping position requirements of workpieces of different sizes without disassembling and reinstalling the fixture.

[0030] like Figure 4 and Figure 5 As shown, the inside of the adjustment frame 4 is equipped with a rotating rod 14, one end of which is equipped with a gear 12, and the other end of which is equipped with a rotating block 17.

[0031] The rotating rod 14 inside the adjusting frame 4 is connected to the gear 12 at one end and extends to the outside of the adjusting frame 4 and is provided with a rotating block 17 at the other end;

[0032] The rotating block 17 provides a force application point for the operator. When the operator rotates the rotating block 17, the rotating block 17 drives the rotating rod 14 to rotate around its own axis inside the adjusting frame 4. The rotation of the rotating rod 14 is directly transmitted to the gear 12 connected at one end, so that the gear 12 rotates synchronously, providing power input for subsequently driving the rack 11 to move and thus driving the fixture body 5 to move.

[0033] like Figure 3 and Figure 4 As shown, the adjustment frame 4 has two racks 11 that mesh with the gear 12 inside. The tops of the two racks 11 are connected to the bottom of the clamp body 5 through support rods.

[0034] When gear 12 rotates under the drive of rotating rod 14, since the two racks 11 mesh with the two sides of gear 12 respectively, according to the transmission principle of gear 12 and rack 11, the rotation of gear 12 will be converted into linear motion of the two racks 11 along the preset trajectory inside the adjusting frame 4, and the directions of motion are opposite. When gear 12 rotates clockwise, one rack 11 moves forward and the other rack 11 moves backward; the opposite is true when gear 12 rotates counterclockwise. The linear motion of rack 11 is transmitted to clamp body 5 through the top support rod, causing the two clamp bodies 5 to move towards or away from each other.

[0035] like Figure 4 As shown, guide blocks 13 are provided on the side walls of both racks 11, and guide grooves for the guide blocks 13 to move are provided on the inner wall of the mounting frame 2.

[0036] As the rack 11 rotates and moves linearly with the gear 12, the guide block 13 on the side wall of the rack 11 is always embedded in the guide groove on the inner wall of the mounting frame 2 and moves synchronously along the extension direction of the guide groove. The guide groove restricts and guides the movement trajectory of the guide block 13, preventing the rack 11 from shifting laterally, tilting, or jamming during movement due to uneven force or meshing clearance of the gear 12.

[0037] like Figure 5 As shown, a sliding ring 15 is movably provided on the outside of the rotating rod 14. Symmetrical pulling blocks 16 are provided on the outer wall of the sliding ring 15. Positioning pins 20 are provided on the side wall of the pulling blocks 16. Multiple positioning holes that are adapted to the positioning pins 20 are opened on the side wall of the mounting frame 2.

[0038] A sliding ring 15 is movably sleeved on the outside of the rotating rod 14. Pulling blocks 16 are symmetrically arranged on the outer wall of the sliding ring 15. A positioning pin 20 is fixed on the side wall of the pulling block 16. Multiple positioning holes adapted to the positioning pin 20 are opened on the side wall of the mounting frame 2. The positioning holes are distributed at a preset interval along the circumference or axial direction of the rotating rod 14.

[0039] The locating pin 20, in conjunction with the locating hole, locks the rotating rod 14 at the current rotation angle position, preventing the rotating rod 14 from rotating unexpectedly due to factors such as vibration and workpiece reaction force during the operation of the fixture.

[0040] like Figure 6 As shown, a U-shaped rod 18 is movably installed inside the rotating block 17, and one end of the U-shaped rod 18 is connected to the side wall of the pulling block 16.

[0041] When the operator needs to pull the pull block 16 to disengage the positioning pin 20 from the positioning hole, he can hold the rotating block 17 and pull it outward. The rotating block 17 drives the two pull blocks 16 to move outward along the axis of the rotating rod 14 in sync with the U-shaped rod 18.

[0042] like Figure 6As shown, a compression spring 19 is sleeved on the outside of the U-shaped rod 18. One end of the compression spring 19 is connected to the side wall of the pulling block 16, and the other end of the compression spring 19 is connected to the side wall of the rotating block 17.

[0043] When the operator pulls the rotating block 17, causing the U-shaped rod 18 and the pulling block 16 to move outward, the distance between the pulling block 16 and the rotating block 17 increases, and the compression spring 19 is further compressed, storing elastic potential energy. After the angle adjustment of the rotating rod 14 is completed, the operator releases the rotating block 17, and the compression spring 19 releases its elastic potential energy, generating an elastic force that extends to both sides, pushing the pulling block 16 to move closer to the rotating block 17. This, in turn, causes the sliding ring 15 and the positioning pin 20 to move towards the mounting frame 2, so that the positioning pin 20 automatically inserts into the positioning hole of the mounting frame 2, thereby achieving automatic locking of the rotating rod 14.

[0044] The above embodiments merely illustrate one or several implementation methods of the easily adjustable zero-point positioning fixture of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

[0045] In this utility model, unless otherwise explicitly specified and limited, for example, it can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components or an 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.

Claims

1. A zero-point positioning fixture that is easy to adjust, characterized in that, The device includes a positioning seat (1), a mounting frame (2) is provided on the top of the positioning seat (1), sliding plates (9) are movably provided on both sides of the inner side of the mounting frame (2), limit blocks (10) are provided on both sides of the top of the sliding plates (9), an adjustment frame (4) is provided on the top of the limit blocks (10), and a clamping body (5) for clamping the workpiece is movably provided on both sides of the inner side of the adjustment frame (4).

2. The adjustable zero-point positioning fixture according to claim 1, characterized in that, The adjustment frame (4) is provided with a bidirectional screw (3) inside. One end of the bidirectional screw (3) extends to the outside of the mounting frame (2) and is provided with a handle (6). Both ends of the bidirectional screw (3) are threaded with threaded blocks (7). The side wall of the threaded block (7) is rotatably provided with a connecting block (8). One end of the connecting block (8) is rotatably connected to the side wall of the sliding plate (9).

3. The adjustable zero-point positioning fixture according to claim 1, characterized in that, The adjustment frame (4) is provided with a rotating rod (14) inside, one end of the rotating rod (14) is provided with a gear (12), and the other end of the rotating rod (14) is provided with a rotating block (17).

4. The adjustable zero-point positioning fixture according to claim 3, characterized in that, The adjustment frame (4) is internally equipped with two racks (11) that mesh with the gear (12). The tops of the two racks (11) are connected to the bottom of the clamp body (5) via support rods.

5. The adjustable zero-point positioning fixture according to claim 4, characterized in that, The side walls of both racks (11) are provided with guide blocks (13), and the inner wall of the mounting frame (2) is provided with guide grooves for the guide blocks (13) to move.

6. The adjustable zero-point positioning fixture according to claim 3, characterized in that, The rotating rod (14) is movably provided with a sliding ring (15), the outer wall of the sliding ring (15) is provided with symmetrical pulling blocks (16), the side wall of the pulling block (16) is provided with a positioning pin (20), and the side wall of the mounting frame (2) is provided with a plurality of positioning holes that are adapted to the positioning pin (20).

7. The adjustable zero-point positioning fixture according to claim 3, characterized in that, The rotating block (17) is equipped with a U-shaped rod (18) inside, one end of which is connected to the side wall of the pulling block (16).

8. The adjustable zero-point positioning fixture according to claim 7, characterized in that, A compression spring (19) is sleeved on the outside of the U-shaped rod (18). One end of the compression spring (19) is connected to the side wall of the pulling block (16), and the other end of the compression spring (19) is connected to the side wall of the rotating block (17).

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