A shockproof clamp for precision part machining

Abstract

The utility model discloses a kind of anti-vibration clamps for precision parts processing, it is related to hardware fixture field, including base, the top of base is provided with processing table, the both sides of processing table top are slidably connected with placing seat, the top of placing seat is movably inserted with clamping piece;Driving motor is installed in the inside of processing table, the output of driving motor is installed with spur gear, the both sides of spur gear are slidably connected with rack, two The rack is set opposite;Shock-absorbing mechanism for preventing hardware workpiece processing vibration is set on base. First damper spring is sleeved in the outer wall of fixed column, and stretch and contract deformation occurs with the displacement of processing table, absorbs and buffers a part of vibration energy;First damper connects two first connecting rods of same side, further consumes vibration energy, suppresses the swing of first connecting rod;It can process vibration from multiple links, effectively reduce the vibration of entire clamp, ensure the processing quality of precision parts.

Description

Technical Field

[0001] This utility model relates to the field of hardware clamping technology, specifically to a vibration-proof clamping fixture for precision parts processing. Background Technology

[0002] Hardware processing is a very broad technology that is crucial to our daily life and industrial production. Hardware typically requires a series of machining and surface treatment techniques to transform raw materials into parts with specific shapes, sizes, and functions. During the hardware processing process, the hardware needs to be fixed to ensure its positional accuracy and improve processing efficiency.

[0003] For example, patent CN222843955U discloses an adjustable hardware clamp, including clamping plates. Hardware parts are placed between two clamping plates, and then a hydraulic rod is activated. The hydraulic rod pushes one clamping plate to move, causing the clamping plate to rotate. The connecting rod rotates a rotating plate, which in turn rotates the other connecting rod. The connecting rod then moves the other clamping plate closer to the rotating plate, thus clamping and limiting the hardware parts on the connecting seat. Rotating a worm gear drives a worm wheel, which in turn drives a support shaft. The support shaft then rotates the support platform and the connecting seat, thereby rotating the clamping plate on the connecting seat and adjusting it to a suitable angle. During the processing of hardware parts, such as drilling or turning, vibrations often occur. If vibrations occur during processing, the relative position of the tool and the workpiece will change, causing deviations in the screw's diameter, pitch, and other dimensions. Vibration may also leave irregular marks on the workpiece surface, increasing surface roughness.

[0004] To address the aforementioned issues, there is an urgent need for innovative designs based on existing precision parts machining fixtures. Utility Model Content

[0005] The purpose of this utility model is to provide a vibration-proof fixture for precision parts machining, so as to solve the problems mentioned in the background art, that if there is vibration during the machining process, the relative position of the tool and the workpiece will change, resulting in deviations in the diameter, pitch and other dimensions of the screw. At the same time, vibration may also leave irregular marks on the surface of the workpiece, resulting in increased surface roughness.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a vibration-damping fixture for precision parts processing, comprising a base, a processing table disposed above the base, placement seats slidably connected to both sides of the top of the processing table, and a clamping piece movably inserted into the top of the placement seat; The processing table is equipped with a drive motor, and a spur gear is installed at the output end of the drive motor. A rack is slidably connected to both sides of the spur gear, and the two racks are arranged opposite each other. The base is equipped with a shock-absorbing mechanism to prevent vibration during the processing of metal workpieces.

[0007] Furthermore, the shock-absorbing mechanism includes fixed columns, which are fixedly connected to both sides inside the base. A first damping spring is sleeved on the outer wall of the fixed column. The two ends of the first damping spring are rotatably connected to a first connecting rod. One end of the first connecting rod is rotatably connected to the bottom of the processing table. The two first connecting rods on the same side are connected by a connecting column. A first damper is installed between the two connecting columns. A base plate is fixedly connected between the two ends of the two fixed columns. A second damper is installed on the top of the base plate.

[0008] Furthermore, the output end of the drive motor is also fixedly connected to a first bevel gear, one side of which is meshed with a second bevel gear, and a transmission shaft is provided inside the second bevel gear. Eccentric wheels are fixedly connected to both ends of the transmission shaft, and a second connecting rod is rotatably connected to one side of the eccentric wheel. One end of the second connecting rod is rotatably connected to the base.

[0009] Furthermore, the placement base is provided with a fixing mechanism for fixing the clamping piece.

[0010] Furthermore, the fixing mechanism includes a pressing column, which is slidably connected to the interior of the placement base. A trapezoidal block is fixedly connected to the bottom end of the pressing column, and a tension spring is fixedly connected to the top of the trapezoidal block. The top end of the tension spring is fixedly connected to the inner top wall of the placement base. Wedge blocks are slidably connected to both sides inside the placement base. Buckles are fixedly connected to both ends of the wedge blocks, and the buckles engage with the interior of the clamping plates. The inclined surface of the wedge blocks matches the inclined surface of the trapezoidal blocks. A return spring is fixedly connected to one end of the wedge blocks, and one end of the return spring is fixedly connected to the interior of the placement base.

[0011] Furthermore, the two racks are slidably connected inside the machining table.

[0012] Compared with the prior art, the beneficial effects of this utility model are: This vibration-damping fixture for precision parts machining features a first damping spring fitted onto the outer wall of a fixed column. This spring expands and contracts with the displacement of the machining table, absorbing and buffering some of the vibration energy. A first damper connects to two first connecting rods on the same side, further dissipating vibration energy and suppressing the swaying of the first connecting rods. A second damper is mounted on the top of the base plate, further buffering and absorbing the vibration transmitted from the machining table to the base. This multi-stage vibration reduction design addresses vibration at multiple points, effectively reducing the overall vibration of the fixture and ensuring the machining quality of precision parts.

[0013] Furthermore, when the drive motor rotates, the meshing action of the first and second bevel gears drives the transmission shaft and eccentric wheel to rotate. The rotation of the eccentric wheel drives the processing table to rise or fall a small distance through the second connecting rod. This allows the damping of the anti-vibration mechanism to be adjusted according to the size or weight of the clamped hardware workpiece, enabling the fixture to better adapt to the processing needs under different working conditions and further improving the stability and accuracy of the processing.

[0014] Furthermore, operators can easily and quickly replace the clamping plates simply by pressing and releasing the pressing column, without the need for complicated tools and operating procedures. This not only improves work efficiency but also allows for quick replacement of suitable clamping plates according to the shape and clamping requirements of different parts, further enhancing the versatility of the fixture. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is a partial three-dimensional structural schematic diagram of the present invention; Figure 3 This is a three-dimensional structural diagram of the shockproof mechanism of this utility model; Figure 4 This is a partial three-dimensional structural diagram of the shockproof mechanism of this utility model; Figure 5 This is a three-dimensional structural diagram of the fixing mechanism of this utility model; Figure 6 A three-dimensional structural diagram of the unlocking mechanism of this utility model; In the diagram: 1. Base; 2. Processing table; 3. Placement seat; 4. Clamping plate; 5. Gear; 6. Rack; 7. First bevel gear; 8. Second bevel gear; 9. Fixed column; 10. First damping spring; 11. First connecting rod; 12. Base plate; 13. Second damper; 14. First damper; 15. Eccentric wheel; 16. Second connecting rod; 17. Pressing column; 18. Tension spring; 19. Trapezoidal block; 20. Wedge block. Detailed Implementation

[0016] 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.

[0017] Example 1: Please refer to Figures 1-6This utility model provides the following technical solution: a vibration-damping fixture for precision parts processing, comprising a base 1, a processing table 2 disposed above the base 1, placement seats 3 slidably connected to both sides of the top of the processing table 2, and a clamping plate 4 movably inserted into the top of the placement seat 3; a drive motor is installed inside the processing table 2, a spur gear 5 is installed at the output end of the drive motor, and racks 6 are slidably connected to both sides of the spur gear 5, with the two racks 6 facing each other; a vibration-damping mechanism for preventing vibration during the processing of metal workpieces is provided on the base 1; the vibration-damping mechanism includes a fixed column 9, which is fixedly connected to both sides inside the base 1, and a first damping spring 10 is sleeved on the outer wall of the fixed column 9. The two ends of the first connecting rod 11 are rotatably connected, one end of the first connecting rod 11 is rotatably connected to the bottom of the processing table 2, the two first connecting rods 11 on the same side are connected by connecting columns, a first damper 14 is installed between the two connecting columns, a base plate 12 is fixedly connected between the two ends of the two fixed columns, and a second damper 13 is installed on the top of the base plate 12; the output end of the drive motor is also fixedly connected to the first bevel gear 7, a second bevel gear 8 is meshed on one side of the first bevel gear 7, a transmission shaft is provided inside the second bevel gear 8, an eccentric wheel 15 is fixedly connected to both ends of the transmission shaft, a second connecting rod 16 is rotatably connected to one side of the eccentric wheel 15, and one end of the second connecting rod 16 is rotatably connected to the base 1; In use, the workpiece is first placed on the placement seat 3, and then the drive motor is started, its output end drives the spur gear 5 to rotate. Since the two sides of the spur gear 5 are slidably connected to opposing racks 6, the rotation of the spur gear 5 will cause the two racks 6 to make relative or opposite linear movements. The movement of the racks 6 causes the placement seat 3 connected to it to slide on both sides of the top of the processing table 2, thereby adjusting the distance between the two placement seats 3 to accommodate precision parts of different sizes. The clamping plates 4 are set to clamp the precision parts in opposite directions, thereby clamping and fixing them. When vibration occurs during processing, the processing table 2 will move up and down. The fixing column 9 is fixed inside the base 1 on both sides. The first damping spring 10 is sleeved on the outer wall of the fixing column 9. The first connecting rod 11 rotatably connected at both ends of the fixing column 9 will rotate with the displacement of the processing table 2. The first damping spring 10 will expand and contract during this process, absorbing and buffering some of the vibration energy. The two first connecting rods 11 on the same side are connected by the connecting column. Next, the first damper 14 between the two connecting columns further consumes vibration energy and suppresses the swing of the first connecting rod 11. The base plate 12 is fixed between the two ends of the two fixed columns 9. The second damper 13 at its top can buffer and absorb the vibration transmitted from the processing table 2 to the base 1 again, thereby effectively reducing the vibration of the entire fixture and ensuring the processing quality of precision parts. When the drive motor rotates, it drives the first bevel gear 7 to rotate. The rotation of the first bevel gear 7 drives the second bevel gear 8 to rotate through meshing. The transmission shaft inside the second bevel gear 8 rotates accordingly, and the eccentric wheels 15 at both ends of the transmission shaft also rotate. The rotation of the eccentric wheels 15 is connected to the base 1 through the second connecting rod 16. The second connecting rod 16 drives the processing table 2 to rise or fall a small distance, so that the vibration reduction of the anti-vibration mechanism can be adjusted according to the size or weight of the clamped hardware workpiece.

[0018] Example 2: Based on Example 1, a fixing mechanism is also disclosed, the specific structure of which is as follows: The fixing mechanism includes a pressing column 17, which is slidably connected to the inside of the placement seat 3. A trapezoidal block 19 is fixedly connected to the bottom end of the pressing column 17, and a tension spring 18 is fixedly connected to the top of the trapezoidal block 19. The top end of the tension spring 18 is fixedly connected to the inner top wall of the placement seat 3. Wedge blocks 20 are slidably connected to both sides inside the placement seat 3. Buckles are fixedly connected to both ends of the wedge blocks 20 and are engaged with the inside of the clamping plate 4. The inclined surface of the wedge blocks 20 matches the inclined surface of the trapezoidal block 19. A return spring is fixedly connected to one end of the wedge blocks 20 and one end of the return spring is fixedly connected to the inside of the placement seat 3. Two racks 6 are slidably connected to the inside of the processing table 2. Initially, the tension spring 18 is in its natural state, and the trapezoidal block 19 is positioned inside the placement seat 3 under the action of the tension spring 18. When the clamping piece 4 needs to be installed, press down on the pressing post 17, which moves the trapezoidal block 19 downward. Since the inclined surface of the trapezoidal block 19 matches the inclined surface of the wedge block 20, the downward movement of the trapezoidal block 19 will push the wedge block 20 to slide to both sides. After the clamping piece 4 is placed inside the placement seat 3, release the pressing post 17. Under the action of the tension spring 18, the trapezoidal block 19 returns to its original position, and the wedge block 20 returns to its original position under the action of its side return spring. The buckles at both ends will engage with the inside of the clamping piece 4, thereby fixing the clamping piece 4 on the placement seat 3. When the clamping piece 4 needs to be removed, simply reverse the operation.

[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A vibration-damping fixture for precision parts machining, comprising a base (1), characterized in that: A processing table (2) is provided above the base (1). Placement seats (3) are slidably connected to both sides of the top of the processing table (2). A clamping piece (4) is movably inserted into the top of the placement seat (3). The processing table (2) is equipped with a drive motor, and a spur gear (5) is installed at the output end of the drive motor. A rack (6) is slidably connected to both sides of the spur gear (5), and the two racks (6) are arranged opposite to each other. The base (1) is provided with a shock-absorbing mechanism to prevent vibration during the processing of metal workpieces.

2. The anti-vibration fixture for precision parts machining according to claim 1, characterized in that: The shock-absorbing mechanism includes a fixed column (9), which is fixedly connected to both sides inside the base (1). A first damping spring (10) is sleeved on the outer wall of the fixed column (9). A first connecting rod (11) is rotatably connected to both ends of the first damping spring (10). One end of the first connecting rod (11) is rotatably connected to the bottom of the processing table (2). The two first connecting rods (11) on the same side are connected by a connecting column. A first damper (14) is installed between the two connecting columns. A base plate (12) is fixedly connected between the two ends of the two fixed columns (9). A second damper (13) is installed on the top of the base plate (12).

3. The anti-vibration fixture for precision parts machining according to claim 1, characterized in that: The output end of the drive motor is also fixedly connected to a first bevel gear (7). A second bevel gear (8) meshes with one side of the first bevel gear (7). A transmission shaft is provided inside the second bevel gear (8). An eccentric wheel (15) is fixedly connected to both ends of the transmission shaft. A second connecting rod (16) is rotatably connected to one side of the eccentric wheel (15). One end of the second connecting rod (16) is rotatably connected to the base (1).

4. The anti-vibration fixture for precision parts machining according to claim 1, characterized in that: The placement seat (3) is provided with a fixing mechanism for fixing the clamping piece (4).

5. The anti-vibration fixture for precision parts machining according to claim 4, characterized in that: The fixing mechanism includes a pressing column (17), which is slidably connected to the inside of the placement seat (3). A trapezoidal block (19) is fixedly connected to the bottom end of the pressing column (17). A tension spring (18) is fixedly connected to the top of the trapezoidal block (19). The top end of the tension spring (18) is fixedly connected to the inner top wall of the placement seat (3). Wedge blocks (20) are slidably connected to both sides inside the placement seat (3). Buckles are fixedly connected to both ends of the wedge blocks (20). The buckles are engaged inside the clamping piece (4). The inclined surface of the wedge blocks (20) matches the inclined surface of the trapezoidal block (19). A return spring is fixedly connected to one end of the wedge blocks (20). One end of the return spring is fixedly connected to the inside of the placement seat (3).

6. The anti-vibration fixture for precision parts machining according to claim 1, characterized in that: The two racks (6) are slidably connected inside the processing table (2).

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