Mechanical spare part machining clamping tool

Abstract

The utility model discloses a mechanical spare and parts processing clamping frock, including base, both ends of base top all are connected with fixed platform of sliding, the both ends of fixed platform inside all are penetrated and are connected with the first rotating platform of rotation, the both ends of first rotating platform inside all are penetrated and are connected with the second rotating platform of rotation, the both ends of second rotating platform inside all are penetrated and are connected with the third rotating platform of rotation, one side all is fixedly connected with antiskid pad of third rotating platform, the middle of fixed platform bottom all are fixedly connected with sliding block, and sliding block and base all are penetrated and are connected with sliding, both ends of fixed platform bottom all are fixedly connected with the limiting block of limit. In the utility model, first through the cooperation between fixed platform, first rotating platform, second rotating platform, third rotating platform, antiskid pad, sliding block etc.

Description

Technical Field

[0001] This utility model relates to the field of clamping fixtures, and in particular to a clamping fixture for processing mechanical parts. Background Technology

[0002] Mechanical parts clamping fixtures are key equipment used in the machinery manufacturing industry for clamping and fixing workpieces. In milling, turning, grinding and other machining processes, they ensure that the workpiece maintains its predetermined posture under the action of cutting force and vibration force through precise positioning and stable clamping, providing basic support for achieving high-precision dimensional machining and complex surface milling, and are widely applicable to various mechanical parts machining scenarios such as shafts, discs, and irregular shapes.

[0003] Currently, various technical approaches have emerged for machining and clamping tooling of mechanical parts. Traditional chuck-type tooling often employs a three-jaw, four-jaw, or single-acting jaw structure, achieving jaw linkage through mechanical transmission such as gears and lead screws. This provides stable clamping force for regular workpieces such as shafts and discs, and is widely used in lathes, grinding machines, and other equipment. In terms of protective mechanism design, existing technologies mostly use fixed protective covers composed of PC boards and metal frames. Some of these covers are connected to the machine tool worktable via hinges, providing basic anti-splash functionality.

[0004] In actual production, existing clamping fixtures are gradually revealing their limitations, with insufficient adaptability and protection: conventional fixture structures have low tolerance for irregularly shaped symmetrical workpieces, making precise clamping difficult, and lack effective protection for transmission components, allowing debris and coolant to easily enter, accelerating component wear and shortening fixture life; there is a contradiction between operation and observation: most machining protection mechanisms are fixed and cannot be quickly disassembled, making loading and unloading operations cumbersome and time-consuming. At the same time, the protective structure obstructs the machining area, making it difficult for operators to clearly observe the machining status, which is not conducive to timely adjustment of machining parameters and troubleshooting of anomalies, affecting machining efficiency and quality control. There is an urgent need to overcome these design defects and develop clamping fixtures that are more suitable for production needs. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a clamping fixture for machining mechanical parts.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a clamping fixture for machining mechanical parts, comprising a base, with fixed platforms slidably connected to both ends of the top of the base, a first rotating platform rotatably connected to both ends of the fixed platform, a second rotating platform rotatably connected to both ends of the first rotating platform, a third rotating platform rotatably connected to both ends of the second rotating platform, an anti-slip pad fixedly connected to one side of each of the third rotating platforms, a slider fixedly connected to the middle of the bottom of each fixed platform, the slider being slidably connected to the base, a limit block fixedly connected to both ends of the bottom of each fixed platform, the limit block being slidably connected to the base, a rocker arm rotatably connected to one end of the base, a bidirectional threaded rod fixedly connected to one end of the rocker arm, the bidirectional threaded rod being rotatably connected to the base, and the bidirectional threaded rod being threadedly connected to the slider, a dustproof component provided on one bottom side of each fixed platform, and protective components provided on both sides of the top of the base.

[0007] As a further description of the above technical solution:

[0008] The dustproof assembly includes a first dustproof plate, and the bottom of one side of the fixed platform is fixedly connected to one side of the first dustproof plate, while the bottom of the other side of the fixed platform is fixedly connected to a second dustproof plate.

[0009] As a further description of the above technical solution:

[0010] The protective component includes a first protective frame, with the top two sides of the base fixedly connected to the bottom of the first protective frame, and a first transparent PC board fixedly connected inside the first protective frame.

[0011] As a further description of the above technical solution:

[0012] Both ends of the base are fixedly connected to a fixing frame, and a second rotating block is fixedly connected to the top center of each fixing frame.

[0013] As a further description of the above technical solution:

[0014] The second rotating block has a first rotating block that passes through and rotatably connects to both sides, and a second protective frame is fixedly connected to one side of each of the first rotating blocks.

[0015] As a further description of the above technical solution:

[0016] The second protective frame has a second transparent PC board fixedly connected inside, and a fixed frame is fixedly connected to both sides of the second protective frame.

[0017] As a further description of the above technical solution:

[0018] A sliding rod is fixedly connected through the top of the fixed frame, and a rotating rod is rotatably connected through the top of the outer ring of the sliding rod. Fixed blocks are fixedly connected to both sides of the fixed frame, and the sliding rod and the fixed blocks are slidably connected through each other.

[0019] As a further description of the above technical solution:

[0020] Each sliding rod has a spring fitted at the bottom of its outer ring. One end of each spring is fixedly connected to a limiting plate, and the other end of each spring is fixedly connected to the top wall inside the fixed frame. The limiting plate passes through and is fixedly connected to the sliding rod.

[0021] This utility model has the following beneficial effects:

[0022] 1. The mechanical parts processing clamping fixture provided by this utility model firstly, through the cooperation between the fixed table, the first rotating table, the second rotating table, the third rotating table, the anti-slip pad, the first dustproof plate, the slider, the bidirectional threaded rod, the rocker arm, the limit block, and the second dustproof plate, the clamping assembly can be driven by rotating the rocker arm to move the anti-slip pad synchronously closer to provide a more symmetrical and stable clamping for irregular workpieces, and can also protect the transmission components.

[0023] 2. The mechanical parts processing clamping fixture provided by this utility model, through the cooperation between the first protective frame, the first transparent PC board, the fixed frame, the first rotating block, the second rotating block, the second protective frame, the second transparent PC board, the fixed frame, the sliding rod, the rotating rod, the spring, the fixed block, and the limiting plate, allows for the quick disassembly of the processing protective components, and allows for clear observation of the processing status through the transparent PC board during the processing. Attached Figure Description

[0024] Figure 1 This is a perspective view of a clamping fixture for machining mechanical parts proposed in this utility model;

[0025] Figure 2 This is a cross-sectional view of a mechanical parts processing clamping fixture proposed in this utility model;

[0026] Figure 3 This is a cross-sectional view of the base of a clamping fixture for machining mechanical parts proposed in this utility model;

[0027] Figure 4 This is a schematic diagram of a machining protection component for a clamping fixture for machining mechanical parts, as proposed in this utility model.

[0028] Figure 5 This is an exploded view of a quick-release assembly for a mechanical parts processing clamping fixture proposed in this utility model.

[0029] Legend:

[0030] 1. Base; 2. Fixed platform; 3. First rotating platform; 4. Second rotating platform; 5. Third rotating platform; 6. Anti-slip pad; 7. First dustproof plate; 8. Slider; 9. Bidirectional threaded rod; 10. Rocker arm; 11. Limiting block; 12. Second dustproof plate; 13. First protective frame; 14. First transparent PC board; 15. Fixed frame; 16. First rotating block; 17. Second rotating block; 18. Second protective frame; 19. Second transparent PC board; 20. Fixed frame; 21. Sliding rod; 22. Rotating rod; 23. Spring; 24. Fixed block; 25. Limiting plate. Detailed Implementation

[0031] 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.

[0032] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," 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 do not 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; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; 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. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0033] Reference Figure 1-5This utility model provides an embodiment of a mechanical parts processing clamping fixture, comprising a base 1, with fixed platforms slidably connected to both ends of the top of the base 1, a first rotating platform 3 rotatably connected to both ends of the fixed platform 2, a second rotating platform 4 rotatably connected to both ends of the first rotating platform 3, and a third rotating platform 5 rotatably connected to both ends of the second rotating platform 4. Anti-slip pads 6 are fixedly connected to one side of each of the third rotating platforms 5. The anti-slip pads 6 are made of wear-resistant rubber and are resistant to cutting fluid corrosion. A slider 8 is fixedly connected to the middle of the bottom of each fixed platform 2, and the slider 8 is slidably connected to the base 1. A nut pair is provided inside the slider 8. Limit blocks 11 are fixedly connected to both ends of the bottom of each fixed platform 2, and the limit blocks 11 are slidably connected to the base 1. A rocker arm 10 is rotatably connected to one end of the base 1, and a bidirectional threaded rod 9 is fixedly connected to one end of the rocker arm 10. The bidirectional threaded rod 9 is rotatably connected to the base 1, and the bidirectional threaded rod 9 and the slider 8 are both rotatably connected. The multi-stage rotating table provides multi-dimensional adjustment space and is compatible with regular and irregular workpieces. The transmission structure of bidirectional threaded rod 9 + slider 8 + limit block 11 enables precise control of clamping distance and reduces processing scrap caused by workpiece clamping deviation. Because the threads at both ends of the bidirectional threaded rod 9 have opposite directions, when rotating, it can drive the anti-slip pads 6 on both sides to move closer and further away precisely and synchronously, making the clamping more symmetrical and stable. For workpieces that require symmetrical clamping, such as irregular parts, it can improve processing accuracy. Dustproof components are set on the bottom of one side of the fixed table 2, and protective components are set on both sides of the top of the base 1.

[0034] The dustproof assembly includes a first dustproof plate 7. One side of the bottom of the fixed platform 2 is fixedly connected to one side of the first dustproof plate 7, and the other side of the bottom of the fixed platform 2 is fixedly connected to a second dustproof plate 12. During the clamping process, the first dustproof plate 7 and the second dustproof plate 12 slide synchronously with the fixed platform 2, dynamically sealing the gap between the base 1 and the fixed platform 2, blocking cutting debris and coolant, and preventing damage to the transmission components. The protective assembly includes a first protective frame 13. The top two sides of the base 1 are fixedly connected to the bottom of the first protective frame 13. A first transparent PC board 14 is fixedly connected inside the first protective frame 13. Fixing brackets 15 are fixedly connected to both ends of the base 1, and the top center of each fixing bracket 15 is fixedly connected to... A second rotating block 17 is connected to the first rotating block 16, which is rotatably connected to both sides of the second rotating block 17. A second protective frame 18 is fixedly connected to one side of each of the first rotating blocks 16. During the processing preparation stage, the first rotating block 16 can be rotated around the second rotating block 17 to lift and lower the second protective frame 18, facilitating quick loading and unloading. A second transparent PC board 19 is fixedly connected inside each of the second protective frames 18. The transparent PC board material ensures the visibility of the processing area. Operators can observe the tool movement and workpiece processing status in real time without removing the protective structure, which facilitates timely adjustment of processing parameters and reduces the scrap rate caused by untimely observation. Moreover, the cost of the transparent PC board is comparable to that of steel. Compared to transparent glass, it is less expensive. The first protective frame 13 and the second protective frame 18 work together to enclose the processing area from multiple sides. The transparent PC board can effectively intercept cutting chips and coolant, reducing the risk of injury from flying debris. The second protective frame 18 has fixed frames 20 on both sides. The top of the fixed frame 20 is connected to a sliding rod 21. The top of the outer ring of the sliding rod 21 is connected to a rotating rod 22. The fixed frame 15 has fixed blocks 24 on both sides. The sliding rod 21 and the fixed block 24 are connected to each other. The bottom of the outer ring of the sliding rod 21 is fitted with a spring 23. One end of the spring 23 is fixedly connected to a limit plate 25, and the other end of the spring 23 is connected to the fixed frame 20. The internal top wall of the frame 20 is fixedly connected. The limiting plate 25 and the sliding rod 21 pass through and are fixedly connected. When the second protective frame 18 needs to be opened for loading and unloading, the rotating rods 22 on both sides are rotated upward, which drives the sliding rod 21 to slide upward in the fixed block 24. At this time, the spring 23 is compressed and stored by the limiting plate 25. When the sliding rod 21 slides completely into the fixed frame 20, the second protective frame 18 can be lifted. When the second protective frame 18 is flipped to the appropriate position, the rotating rod 22 is rotated downward to make the sliding rod 21 slide into the fixed block 24, so that it limits the second protective frame 18 to protect the operator during processing. After processing, the operation is reversed to quickly retract the second protective frame 18 for loading and unloading.

[0035] Working principle: First, rotating the rocker arm 10 drives the bidirectional threaded rod 9 to rotate. Because the threads at both ends rotate in opposite directions, the sliders 8 on both sides drive the fixed platform 2 to move synchronously towards or away from each other along the guide rail of the base 1. The movement trajectory is restricted by the limit block 11, and the distance between the fixed platforms 2 is adjusted to be slightly larger than the workpiece size. Then, the workpiece is placed between the two third rotating platforms 5. Rotating the rocker arm 10, the bidirectional threaded rod 9 drives the two fixed platforms 2 to move closer synchronously until the anti-slip pad 6 adheres to the surface of the workpiece and clamps it, achieving multi-dimensional posture adaptation. When the fixed platform 2 moves, the first dustproof plate 7 and the second dustproof plate 12 slide synchronously, always maintaining the transmission group. To protect the workpiece, pull the rotating rod 22 upwards so that the sliding rod 21 slides completely into the fixed frame 20. Then, rotate the second protective frame 18 upwards. When the second protective frame 18 is rotated to the appropriate position, flip the rotating rod 22 downwards so that the sliding rod 21 slides into the fixed block 24 to limit the second protective frame 18. The first transparent PC plate 14 of the first protective frame 13 and the second transparent PC plate 19 of the second protective frame 18 form a semi-enclosed space to protect the operator, leaving only the tool processing channel open so that the internal state can be clearly observed. After processing, reverse the above steps to disassemble the processed workpiece.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 utility model should be included within the protection scope of the present utility model.

Claims

1. A clamping fixture for machining mechanical parts, comprising a base (1), characterized in that: The base (1) has fixed platforms (2) slidably connected to both ends of its top. The fixed platforms (2) have first rotating platforms (3) slidably connected to both ends of their interiors. The first rotating platforms (3) have second rotating platforms (4) slidably connected to both ends of their interiors. The second rotating platforms (4) have third rotating platforms (5) slidably connected to both ends of their interiors. The third rotating platforms (5) have anti-slip pads (6) fixedly connected to one side. The fixed platforms (2) have sliders (8) fixedly connected to the middle of their bottoms. The sliders (8) are slidably connected to the base (1). The fixed platform (2) has a limit block (11) fixedly connected to both ends of its bottom, and the limit block (11) and the base (1) are connected through and slidably. One end of the base (1) is connected through and rotatably to a rocker arm (10), and one end of the rocker arm (10) is fixedly connected to a bidirectional threaded rod (9). The bidirectional threaded rod (9) is connected through and rotatably to the base (1), and the bidirectional threaded rod (9) and the slider (8) are connected through and threadedly. A dustproof component is provided on one side of the bottom of the fixed platform (2), and protective components are provided on both sides of the top of the base (1).

2. The clamping fixture for machining mechanical parts according to claim 1, characterized in that: The dustproof assembly includes a first dustproof plate (7), and the bottom of one side of the fixed platform (2) is fixedly connected to one side of the first dustproof plate (7), and the bottom of the other side of the fixed platform (2) is fixedly connected to a second dustproof plate (12).

3. The clamping fixture for machining mechanical parts according to claim 1, characterized in that: The protective component includes a first protective frame (13), the top two sides of the base (1) are fixedly connected to the bottom of the first protective frame (13), and a first transparent PC board (14) is fixedly connected inside the first protective frame (13).

4. The clamping fixture for machining mechanical parts according to claim 1, characterized in that: The base (1) is fixedly connected to a fixing frame (15) at both ends, and a second rotating block (17) is fixedly connected to the top center of the fixing frame (15).

5. The machining clamping fixture for mechanical parts according to claim 4, characterized in that: The second rotating block (17) has a first rotating block (16) that is rotatably connected through both sides, and a second protective frame (18) is fixedly connected to one side of the first rotating block (16).

6. The clamping fixture for machining mechanical parts according to claim 5, characterized in that: The second protective frame (18) is fixedly connected to a second transparent PC board (19) inside, and fixed frames (20) are fixedly connected to both sides of the second protective frame (18).

7. The clamping fixture for machining mechanical parts according to claim 6, characterized in that: A sliding rod (21) is fixedly connected through the top of the fixed frame (20), and a rotating rod (22) is rotatably connected through the top of the outer ring of the sliding rod (21). A fixing block (24) is fixedly connected to both sides of the fixed frame (15), and the sliding rod (21) and the fixing block (24) are both slidably connected through each other.

8. The clamping fixture for machining mechanical parts according to claim 7, characterized in that: Springs (23) are fitted around the bottom of the outer ring of the sliding rod (21). One end of each spring (23) is fixedly connected to a limiting plate (25), and the other end of each spring (23) is fixedly connected to the top wall inside the fixed frame (20). The limiting plate (25) and the sliding rod (21) pass through and are fixedly connected.

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