Multi-station fixture for milling rudder wing parts

Abstract

The application relates to a multi-station clamp for milling rudder wing parts, which comprises a mounting plate, a workpiece fixing plate, a driving device, a transmission device and a clamping device. The transmission device transmits the power of the driving device to the second push rod moving in the vertical direction. The clamping device comprises at least two groups of second push rods and clamping mechanisms symmetrically arranged on the two sides of the second push rod. Each clamping mechanism comprises a first fixing frame, a second fixing frame, a first push rod, a first connecting rod, a second connecting rod and a third connecting rod. The bottom end of the first push rod is fixed with a pressing plate matched with the shape of the rudder wing part to be machined. The first push rod can only make vertical reciprocating motion after passing through the limiting hole of the first fixing frame. When the second push rod moves vertically upward, the pressing plates in the clamping mechanisms on the two sides move vertically downward at the same time, and the parts are pressed. Through the design of the clamping device, multiple rudder wing parts to be machined can be machined at the same time in one machining process, and the workpiece machining efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of machining technology, and in particular to a multi-station fixture for milling rudder-type parts. Background Technology

[0002] Machining refers to the process of changing the shape, size, or properties of a workpiece using mechanical equipment. Based on the processing method, it can be divided into cutting and pressure processing. A fixture is a device used in mechanical manufacturing to fix the workpiece in the correct position for operation or inspection.

[0003] Rudder-type parts are characterized by their complex structure, high positioning requirements, high machining accuracy requirements, and large batch sizes. When using traditional fixtures to clamp these parts, the screw is typically rotated manually to engage the threads and clamp the parts on both sides. This method is prone to insufficient clamping, leading to machining errors, and the clamping operation is inconvenient, resulting in low machining efficiency. Therefore, traditional fixtures are unsuitable for milling rudder-type parts. Furthermore, existing fixtures for milling rudder-type parts suffer from problems such as limited workstations, low machining efficiency, inability to ensure that every part is clamped, and an insufficiently streamlined fixture structure. Summary of the Invention

[0004] To address the problems that traditional fixtures are unsuitable for milling rudder-type parts, and that existing fixtures for milling rudder-type parts suffer from limited workstations, low processing efficiency, inability to ensure that each part is clamped when clamping the rudder-type parts to be processed, and insufficient fixture structure, this invention provides a multi-station fixture for milling rudder-type parts.

[0005] To solve the above problems, the present invention adopts the following technical solution:

[0006] A multi-station fixture for milling rudder-type parts includes a mounting plate, a workpiece fixing plate, a drive device, a transmission device, and a clamping device.

[0007] The workpiece fixing plate is fixed to the mounting plate by the column, the drive device is fixed to the mounting plate, and the drive device is connected to the transmission device. The transmission device transmits the power of the drive device to the second push rod in the clamping device that moves in the vertical direction.

[0008] The clamping device includes at least two sets of second push rods and clamping mechanisms symmetrically arranged on both sides of the second push rods. Each clamping mechanism includes a first fixed frame, a second fixed frame, a first push rod, a first connecting rod, a second connecting rod, and a third connecting rod. The top end of the second push rod is connected to one end of the third connecting rod, and the other end of the third connecting rod is sequentially connected to the second connecting rod and the first connecting rod. The end of the first connecting rod is connected to the top end of the first push rod. A pressure plate matching the shape of the rudder-like part to be processed is fixed at the bottom end of the first push rod. The first fixed frame and the second fixed frame are both fixed on the workpiece fixing plate. The center of the second connecting rod is fixed on the second fixed frame. After the first push rod passes through the limiting hole on the first fixed frame, it can only make reciprocating motion in the vertical direction. When the second push rod moves vertically upward, the pressure plates in the clamping mechanisms on both sides move vertically downward simultaneously under the drive of the first push rod, the first connecting rod, the second connecting rod, and the third connecting rod, pressing the rudder-like part to be processed.

[0009] Compared with the prior art, the present invention has the following beneficial effects:

[0010] This invention provides a multi-station milling fixture capable of simultaneously clamping multiple rudder-type parts to be processed. The fixture, through control of a drive unit, transmits power from the drive unit to a second push rod in the clamping device via a transmission mechanism. The power is then transmitted to corresponding pressure plates by clamping mechanisms on both sides of the second push rod, ensuring that the pressure plates simultaneously and firmly press against the crescent-shaped surface of the rudder-type parts to be processed. This achieves clamping of the rudder-type parts, significantly reducing the machining error rate. Furthermore, the design of the clamping device increases the number of processing stations, allowing multiple rudder-type parts to be processed simultaneously in a single machining operation, thus significantly improving workpiece processing efficiency. Attached Figure Description

[0011] The accompanying drawings are provided to further explain the invention and are an important part of the specification. They are used together with the embodiments of the invention to illustrate the invention, but do not constitute a limitation thereof. In the drawings:

[0012] Figure 1 A schematic diagram of the overall structure of a multi-station fixture for milling rudder-type parts provided by the present invention;

[0013] Figure 2 A schematic diagram of a multi-station fixture for milling rudder-type parts when clamping the parts to be machined.

[0014] Figure 3 This is a structural schematic diagram of the drive device, transmission device, and clamping device;

[0015] Figure 4 A top view of the workpiece fixing plate and its clamping device;

[0016] Explanation of reference numerals in the attached drawings: 1. Gear holder; 2. Rudder-like part to be processed; 3. Cylinder; 4. First holder; 5. Column; 6. Cylinder holder; 7. Mounting plate; 8. Single-sided pressure plate; 9. Double-sided pressure plate; 10. Workpiece fixing plate; 11. First push rod; 12. First connecting rod; 13. Second connecting rod; 14. Second holder; 15. Third connecting rod; 16. Fourth connecting rod; 17. Second push rod; 18. Fifth connecting rod; 19. Sixth connecting rod; 20. Connecting piece; 21. First gear; 22. First bearing; 23. Seventh connecting rod; 24. Third holder; 25. Eighth connecting rod; 26. Fourth holder; 27. Ninth connecting rod; 28. Tenth connecting rod; 29. ​​Rack; 30. Second bearing; 31. Second gear; 32. Fixing groove; 33. Transmission rod. Detailed Implementation

[0017] The following specific embodiments illustrate the implementation schemes described in this invention. Those skilled in the art can understand the features and functions of this invention through the content described in this specification. It should be noted that the accompanying drawings provided in the following embodiments are for illustrative purposes only, representing schematic diagrams only, not actual pictures, and should not be construed as limiting the invention. To better illustrate the embodiments of this invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions; it is understandable for those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0018] In the figures of this invention, the same or similar reference numerals correspond to the same or similar components. In the description of this invention, it should be understood that if terms such as "upper," "lower," "left," "right," "front," and "rear" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figure, they are only for the convenience of describing this invention 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. Therefore, the terms used to describe positional relationships in the figures are only for illustrative purposes and should not be construed as limiting this invention. For those skilled in the art, the specific meaning of the above-mentioned terms can be understood according to the specific circumstances.

[0019] like Figures 1-4As shown, the present invention provides a multi-station fixture for milling rudder-type parts, which mainly includes a mounting plate, a workpiece fixing plate 10, a driving device, a transmission device, and a clamping device. The mounting plate serves as a support plate, and four columns in four directions of the mounting plate are connected to the workpiece fixing plate 10 to provide connection and support. The clamping device is fixed on the workpiece fixing plate 10, and the driving device is fixed on the mounting plate and connected to the transmission device. The power of the driving device is transmitted to the clamping device through the transmission device, specifically to the second push rod 17 in the clamping device that moves in the vertical direction, so that the clamping device clamps the rudder-type part 2 to be processed, thereby restricting the vertical degree of freedom of the workpiece. To further restrict the degrees of freedom of the rudder-like parts to be processed in the horizontal directions of forward, backward, left, and right, as well as the rotation in the x, y, and z directions, the workpiece fixing plate 10 is provided with several fixing grooves 32. These fixing grooves 32 are engaged with the protrusions at the bottom of the rudder-like parts 2 to be processed. The protrusions at the bottom of the rudder-like parts 2 to be processed can be completely embedded in the fixing grooves 32, thereby ultimately completely restricting the six degrees of freedom of the rudder-like parts to be processed.

[0020] A second push rod 17 and clamping mechanisms symmetrically arranged on both sides of the second push rod 17 constitute a set. The clamping device includes at least two sets of second push rods 17 and clamping mechanisms on both sides. Each clamping mechanism includes a first fixed frame 4, a second fixed frame 14, a first push rod 11, a first connecting rod 12, and a second connecting rod 13. The clamping mechanisms on both sides of the second push rod 17 have the same structure. The clamping mechanism on the left side includes a third connecting rod 15, and the corresponding clamping mechanism on the right side includes a fourth connecting rod 16. The third connecting rod 15 and the fourth connecting rod 16 are respectively connected to the top of the second push rod 17. Here, only the clamping mechanism on the left side is used as an example for explanation. The other end of the third connecting rod 15 is connected to the second connecting rod 13 and the first connecting rod 12 in sequence. The end of the first connecting rod 12 is connected to the top of the first push rod 11. A pressure plate is fixed at the bottom of the first push rod 11, and the shape of the pressure plate matches the shape of the rudder-like part 2 to be processed. The first fixed frame 4 and the second fixed frame 14 are both fixed on the workpiece fixing plate 10. The center of the second connecting rod 13 is fixed on the second fixed frame 14. After the first push rod 11 passes through the limiting hole on the first fixed frame 4, it can only make reciprocating motion in the vertical direction. When the second push rod 17 moves vertically upward, the pressure plates on both sides move vertically downward simultaneously under the action of the first push rod 11, the first connecting rod 12, the second connecting rod 13, and the third connecting rod 15, pressing the rudder-like parts 2 to be processed; conversely, when the second push rod 17 moves vertically downward, the pressure plates on both sides move vertically upward simultaneously under the action of the first push rod 11, the first connecting rod 12, the second connecting rod 13, and the third connecting rod 15, releasing the rudder-like parts 2 to be processed.

[0021] The specific operation process of the clamping device is described as follows: The transmission device transmits power to the bottom end of the second push rod 17. Since the horizontal movement of the second push rod 17 is restricted by the workpiece fixing plate 10, under the drive of the transmission device, the second push rod 17 can only perform vertical reciprocating motion. The vertical movement of the second push rod 17 drives the movement of the third connecting rod 15 (since the clamping mechanisms on both sides of the second push rod 17 are completely symmetrical, only the clamping process of one clamping mechanism is described in detail here). The movement of the third connecting rod 15 drives the movement of the second connecting rod 13. The center of link 3 is fixed on the second fixed frame 14. Therefore, driven by the third link 15, the second link 13 swings up and down around the fixed center point. The swing of the second link 13 transmits the motion to the first link 12, which in turn transmits the motion to the first push rod 11. Since the first fixed frame 4 restricts the horizontal movement of the first push rod 11, it can only perform vertical reciprocating motion under the drive of the first link 12. At the same time, the bottom end of the first push rod 11 is fixed with a pressure plate for pressing the crescent-shaped surface of the rudder-like part 2 to be processed. Therefore, when the drive device outputs power, the power is transmitted through a series of links in the transmission device and clamping device to the first push rod 11, so that the pressure plate on the first push rod 11 firmly presses against the crescent-shaped surface of the rudder-like part 2 to be processed, thereby completely restricting the six degrees of freedom of the rudder-like part to be processed, achieving the purpose of fixing the workpiece, and providing a strong guarantee for subsequent milling processing.

[0022] Furthermore, see still Figure 1 , Figure 2 and Figure 4The drive device includes a cylinder 3, a cylinder mounting bracket 6, a connector 20, a rack 29, a first gear 21, a second gear 31, a first bearing 22, a second bearing 30, and a gear mounting bracket 1. The cylinder mounting bracket 6 and the gear mounting bracket 1 are both fixed on the mounting plate 7. The cylinder 3 is fixed on the cylinder mounting bracket 6, and the push rod of the cylinder 3 is fixedly connected to the rack 29 through the connector 20 and screws. The first gear 21 and the second gear 31 mesh with each other and are fixed on the gear mounting bracket 1 through the first bearing 22 and the second bearing 30, respectively. The first gear 21 meshes with the rack 29. A gear mounting bracket 1 and a cylinder mounting bracket 6 are fixed on the center line of the mounting plate 7. The gear mounting bracket 1 has a first bearing 22 and a second bearing 30. The first bearing 22 and the second bearing 30 are used to fix two gears, namely the first gear 21 and the second gear 31, respectively. The two gears mesh with each other to transmit power. The cylinder mounting bracket 6 fixes the cylinder 3. The push rod of the cylinder 3 is connected to the rack 29 through the connector 20 and screws. The rack 29 meshes with the first gear 21 on the gear mounting bracket 1 to transmit power. The central shaft of the second gear 31 is fixedly connected to the seventh connecting rod 23 in the transmission device. The seventh connecting rod 23 is connected to the central shaft of the second gear 31 as a crank-rocker structure. The power from the cylinder is transmitted to other connecting rods in the transmission device through the crank-rocker structure.

[0023] The specific operation process of the drive device is described as follows: As the push rod of cylinder 3 reciprocates in the horizontal direction, the rack 29 fixed to the push rod also reciprocates in the horizontal direction. The rack 29 drives the first gear 21 meshing with it to move. When the first gear 21 moves clockwise and counterclockwise, it will also drive the second gear 31 meshing with it to move in the opposite direction. Since the central axis of the second gear 31 is fixedly connected to the seventh link 23, when the second gear 31 rotates clockwise and counterclockwise, it will drive the seventh link 23 to swing back and forth with an angle of about 30°.

[0024] The transmission system uses a linkage structure to transmit power from the drive unit. (See also...) Figure 4 The transmission device includes a fifth link 18, a sixth link 19, a seventh link 23, an eighth link 25, a ninth link 27, a tenth link 28, a third fixed frame 24, and a fourth fixed frame 26. The third fixed frame 24 and the fourth fixed frame 26 are both fixed on the workpiece fixing plate 10. One end of the seventh link 23 is fixedly connected to the central shaft of the second gear 31. The other end of the seventh link 23 is sequentially connected to the tenth link 28, the ninth link 27, the eighth link 25, the sixth link 19, and the fifth link 18. The end of the fifth link 18 is connected to the bottom end of the second push rod 17. The center of the sixth link 19 is fixed on the third fixed frame 24. After the ninth link 27 passes through the limiting hole on the fourth fixed frame 26, it can only make reciprocating motion in the vertical direction.

[0025] The specific operation of the transmission device is described as follows: Because the seventh link 23 reciprocates under the drive of the drive device, it drives the connected tenth link 28 to move. The movement of the tenth link 28 then drives the connected ninth link 27 to move. Since the horizontal movement of the ninth link 27 is restricted by the fourth fixed frame 26, under the drive of the tenth link 28, the ninth link 27 can only perform vertical reciprocating motion. Then, the ninth link 27 drives the eighth link 25 to move, and the eighth link 25 drives the sixth link 19 to move. The center of the connecting rod 19 is fixed on the third fixed frame 24. Therefore, under the drive of the eighth connecting rod 25, the sixth connecting rod 19 can only swing up and down around the center fixed point. The sixth connecting rod 19 drives the fifth connecting rod 18 to move. The end of the fifth connecting rod 18 is connected to the bottom end of the second push rod 17. At the same time, since the second push rod 17 is restricted from horizontal movement by the workpiece fixing plate 10, under the drive of the fifth connecting rod 18, the second push rod 17 can only perform vertical reciprocating motion. Thus, the transmission device transmits the power generated by the drive device to the second push rod 17 in the clamping device.

[0026] Furthermore, such as Figure 1 and Figure 2 As shown, the clamping device has five sets of second push rods 17 and clamping mechanisms on both sides. The bottom ends of each second push rod 17 are fixedly connected by a transmission rod 33. The end of the fifth connecting rod 18 is connected to the bottom end of any second push rod 17, so that eight rudder-type parts to be processed can be fixed at one time, and each rudder-type part to be processed can be clamped, thereby improving processing efficiency.

[0027] Furthermore, when the clamping device is provided with five sets of second push rods 17 and clamping mechanisms on both sides, four rectangular fixing slots 32 are provided between two adjacent sets of second push rods 17 and clamping mechanisms on both sides, thereby stably fixing each rudder-type part to be processed.

[0028] Furthermore, the clamping device has two types of pressure plates: a single-sided pressure plate 8 and a double-sided pressure plate 9, as described above. Figure 3 In the clamping device, the leftmost and rightmost pressure plates are single-sided pressure plates 8, while the remaining middle pressure plates are double-sided pressure plates 9. The use of these single-sided and double-sided pressure plates allows for better fixation of the rudder-type parts to be machined, while also simplifying the device structure.

[0029] This invention provides a multi-station milling fixture capable of simultaneously clamping multiple rudder-type parts to be processed. The fixture, through control of a drive unit, transmits power from the drive unit to the second push rod 17 in the clamping device via a transmission mechanism. The power is then transmitted from the clamping mechanisms on both sides of the second push rod 17 to the corresponding pressure plates, allowing the pressure plates on both sides to simultaneously and firmly press against the crescent-shaped surface of the rudder-type parts to be processed. This achieves clamping of the rudder-type parts, significantly reducing the machining error rate. Furthermore, the design of the clamping device increases the number of processing stations, ensuring that multiple rudder-type parts can be processed simultaneously in a single machining operation, significantly improving workpiece processing efficiency.

[0030] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0031] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A multi-station fixture for milling rudder-type parts, characterized in that, Includes mounting plate (7), workpiece fixing plate (10), drive device, transmission device and clamping device; The workpiece fixing plate (10) is fixed on the mounting plate (7) by the column (5), the drive device is fixed on the mounting plate (7), and the drive device is connected to the transmission device. The transmission device transmits the power of the drive device to the second push rod (17) in the clamping device that moves in the vertical direction. The clamping device includes at least two sets of second push rods (17) and clamping mechanisms symmetrically arranged on both sides of the second push rods (17). Each clamping mechanism includes a first fixing frame (4), a second fixing frame (14), a first push rod (11), a first connecting rod (12), a second connecting rod (13), and a third connecting rod (15). The top end of the second push rod (17) is connected to one end of the third connecting rod (15), and the other end of the third connecting rod (15) is sequentially connected to the second connecting rod (13) and the first connecting rod (12). The end of the first connecting rod (12) is connected to the top end of the first push rod (11), and the bottom end of the first push rod (11) is connected to the top end of the first push rod (11). A pressure plate is fixed with a shape matching the rudder wing part (2) to be processed. The first fixing frame (4) and the second fixing frame (14) are both fixed on the workpiece fixing plate (10). The center of the second connecting rod (13) is fixed on the second fixing frame (14). After the first push rod (11) passes through the limiting hole on the first fixing frame (4), it can only make vertical reciprocating motion. When the second push rod (17) moves vertically upward, the pressure plates on both sides move vertically downward simultaneously under the drive of the first push rod (11), the first connecting rod (12), the second connecting rod (13) and the third connecting rod (15), pressing the rudder wing part (2) to be processed. The drive device includes a cylinder (3), a cylinder mounting bracket (6), a connector (20), a rack (29), a first gear (21), a second gear (31), a first bearing (22), a second bearing (30), and a gear mounting bracket (1), and both the cylinder mounting bracket (6) and the gear mounting bracket (1) are fixed on the mounting plate (7); The cylinder (3) is fixed on the cylinder mounting bracket (6), and the push rod of the cylinder (3) is fixedly connected to the rack (29) by the connector (20) and screws; After the first gear (21) and the second gear (31) mesh with each other, they are fixed on the gear fixing frame (1) through the first bearing (22) and the second bearing (30) respectively, and the first gear (21) meshes with the rack (29); The transmission device includes a fifth link (18), a sixth link (19), a seventh link (23), an eighth link (25), a ninth link (27), a tenth link (28), a third fixed frame (24), and a fourth fixed frame (26), and the third fixed frame and the fourth fixed frame are both fixed on the workpiece fixing plate (10); One end of the seventh link (23) is fixedly connected to the central shaft of the second gear (31). The other end of the seventh link (23) is sequentially connected to the tenth link (28), the ninth link (27), the eighth link (25), the sixth link (19), and the fifth link (18). The end of the fifth link (18) is connected to the bottom end of the second push rod (17). The center of the sixth link (19) is fixed on the third fixed frame (24). After the ninth link (27) passes through the limiting hole on the fourth fixed frame (26), it can only make reciprocating motion in the vertical direction.

2. The multi-station fixture for milling rudder-type parts according to claim 1, characterized in that, The clamping device is provided with five sets of second push rods (17) and clamping mechanisms on both sides, and the bottom ends of each second push rod (17) are fixedly connected by a transmission rod (33), and the end of the fifth connecting rod (18) is connected to the bottom end of any one of the second push rods (17).

3. A multi-station fixture for milling rudder-type parts according to claim 2, characterized in that, The pressure plates are divided into single-sided pressure plates (8) and double-sided pressure plates (9). The outermost pressure plate in the clamping device is a single-sided pressure plate (8), and the remaining pressure plates are double-sided pressure plates (9).

4. A multi-station fixture for milling rudder-type parts according to claim 2, characterized in that, The workpiece fixing plate (10) is provided with several fixing grooves (32) that are engaged with the protrusions at the bottom of the rudder-type parts (2) to be processed.

5. A multi-station fixture for milling rudder-type parts according to claim 2, characterized in that, Four rectangular fixing slots (32) are provided between the two adjacent sets of second push rods (17) and the clamping mechanisms on both sides.

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