Five-axis machining center adaptive fixture

Abstract

The utility model relates to mechanical processing equipment technical field, concretely is five axle linkage machining center adaptation fixture, including clamping disc, clamping mechanism and transmission mechanism, clamping mechanism fixed connection with the top of clamping disc, transmission mechanism screw thread connection in the bottom of clamping disc, clamping mechanism includes the connection hole groove of card and set up in the top of clamping disc. In the utility model, through the setting of small diameter positioning plate, medium diameter positioning plate and large diameter positioning plate, the clamping system covering small, medium and large diameter workpieces is constructed, the workpieces of different diameters can be stably clamped, the workpieces can be prevented from falling off or even flying out under the power of transmission mechanism when machining, the harm to the staff is avoided, the replacement of clamping assembly due to the diameter of workpiece is avoided, the clamping fixture does not need to be frequently replaced, the production cost is greatly reduced, the tool changing time is shortened, the machining efficiency is remarkably improved, and the diversified machining demand can be adapted.

Description

Technical Field

[0001] This utility model relates to the field of machining equipment technology, and in particular to a fixture adapted for a five-axis linkage machining center. Background Technology

[0002] Five-axis machining centers, as high-precision and high-efficiency machining equipment, are widely used in many fields such as aerospace, automotive manufacturing, and precision mold making. They can machine complex curved surfaces and irregularly shaped parts through the simultaneous operation of five axes, greatly improving machining accuracy and efficiency. However, in actual machining processes, suitable fixtures are crucial for fully utilizing the performance of five-axis machining centers.

[0003] When existing technical solutions are used,

[0004] (1) Poor versatility: It can only clamp workpieces of specific size and shape, and has poor independence. It is difficult to clamp workpieces with irregular shapes stably, and different fixtures need to be changed, which increases production costs and tool change time and reduces processing efficiency.

[0005] (2) Insufficient clamping stability: It is difficult to clamp workpieces of different diameters stably, and the clamping force is difficult to adjust. It is easy to cause excessive clamping of small workpieces, resulting in deformation. Traditional fixtures are prone to loosening and displacement, which leads to a decrease in machining accuracy and even affects the quality of the workpiece and the service life of the machining center.

[0006] To address the aforementioned issues, this utility model provides a five-axis linkage machining center adapter fixture. Utility Model Content

[0007] The purpose of this utility model is to solve the problems of poor versatility and insufficient clamping stability of existing fixtures, and to propose a five-axis linkage machining center adapter fixture.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: a five-axis linkage machining center adapter fixture, including a clamping plate, a clamping mechanism, and a transmission mechanism. The clamping mechanism is fixedly connected to the top of the clamping plate, and the transmission mechanism is threadedly connected to the bottom of the clamping plate. The clamping mechanism includes a connecting hole slot that is snapped into the top of the clamping plate. An adjusting column is fixedly connected inside the connecting hole slot, and a small-diameter positioning plate is fixedly connected to the outer surface of the adjusting column. The small-diameter positioning plate and the adjusting column are symmetrically arranged inside the connecting hole slot. The clamping mechanism includes a medium-diameter clamping assembly fixedly connected to the top of the clamping plate, and a large-diameter clamping assembly fixedly connected to the outer surface of the clamping plate.

[0009] Furthermore, there are five medium-diameter clamping assemblies, which are arranged at five equal intervals on the top of the clamping disk. Each medium-diameter clamping assembly includes a placement hole opened on the top of the clamping disk, and the five medium-diameter clamping assemblies are in an independent state.

[0010] Furthermore, a piston telescopic rod is fixedly connected inside the placement hole, a telescopic spring is sleeved on the outer surface of the piston telescopic rod, a sliding plate is fixedly connected to the top of the piston telescopic rod and the telescopic spring, a medium-diameter positioning plate is fixedly connected to the top of the sliding plate, and a rubber pad is fixedly connected to the outer surface of the medium-diameter positioning plate.

[0011] Furthermore, the large-diameter clamping assembly consists of five parts, which are arranged at five equal intervals on the outer surface of the clamping disk. Each large-diameter clamping assembly includes a connecting block fixedly connected to the outer surface of the clamping disk. A support plate is fixedly connected to the top of the connecting block, and threaded holes are provided on both sides of the support plate.

[0012] Furthermore, the two sides of the support plate are threadedly connected to adjusters through threaded holes, and the bottom of the adjuster is rotatably connected to a bearing. A large-diameter positioning plate is fixedly connected to the outer surface of the bearing, and the outer surface of the bearing is fitted into the interior of the large-diameter positioning plate.

[0013] Furthermore, the transmission mechanism includes a connecting plate threaded to the bottom of the clamping disk, bolts threaded to both sides of the connecting plate, and a servo motor fixedly connected to the bottom of the connecting plate. The servo motor is threaded to the bottom of the clamping disk through the connecting plate.

[0014] Furthermore, a protective shell is fitted onto the outer surface of the servo motor, and a protective cover plate is threaded onto the protective shell. The servo motor is fixedly connected to the inside of the protective shell through the protective cover plate.

[0015] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0016] 1. In this utility model, by setting up small-diameter positioning plates, medium-diameter positioning plates, and large-diameter positioning plates, a clamping system covering workpieces of different diameters (small, medium, and large) is constructed. This system can stably clamp workpieces of different diameters, preventing them from falling off during processing or even flying out under the power of the transmission mechanism, thus avoiding injury to workers. It also avoids the need to replace clamping components due to workpiece diameter, eliminating the need for frequent fixture replacements, greatly reducing production costs, shortening tool change time, and significantly improving processing efficiency. This system can adapt to diverse processing needs.

[0017] 2. In this utility model, the clamping force is precisely controlled by the rubber pad, piston telescopic rod, and adjuster. The clamping components are independent of each other, and both regular and irregular shaped workpieces can be stably clamped by the corresponding positioning plate and clamping components. The rubber pad ensures friction while avoiding damage to the workpiece surface. The piston telescopic rod, in conjunction with the telescopic spring, can automatically adjust the clamping force according to the workpiece size to prevent deformation of small workpieces. The adjuster can precisely adjust the position of large-diameter positioning to ensure stable clamping of large workpieces. This effectively solves the problems of unstable clamping and difficult force control of traditional fixtures, improves processing accuracy, and ensures workpiece quality and the service life of the machining center. Attached Figure Description

[0018] Figure 1 A three-dimensional structural diagram of a five-axis linkage machining center adapter fixture is provided for this utility model.

[0019] Figure 2 This utility model provides a structural schematic diagram of the connecting plate in the adapter fixture for a five-axis linkage machining center;

[0020] Figure 3 This utility model proposes an adapter fixture for a five-axis linkage machining center. Figure 2 Enlarged view of point A;

[0021] Figure 4 This utility model provides a structural schematic diagram of a large-diameter positioning plate in a five-axis linkage machining center adapter fixture.

[0022] Figure 5 This utility model provides a structural schematic diagram of the piston telescopic rod in the adapter fixture for a five-axis linkage machining center;

[0023] Figure 6 This utility model proposes an adapter fixture for a five-axis linkage machining center. Figure 5 Enlarged diagram of point B.

[0024] Legend:

[0025] 1. Clamping plate; 2. Clamping mechanism; 21. Connecting hole slot; 22. Adjusting column; 23. Small diameter positioning plate; 24. Medium diameter clamping assembly; 241. Placement hole; 242. Piston telescopic rod; 243. Telescopic spring; 244. Sliding plate; 245. Medium diameter positioning plate; 246. Rubber pad; 25. Large diameter clamping assembly; 251. Connecting block; 252. Support plate; 253. Threaded hole; 254. Adjuster; 255. Bearing; 256. Large diameter positioning plate; 3. Transmission mechanism; 31. Connecting plate; 32. Bolt; 33. Servo motor; 34. Protective shell; 35. Protective cover plate. Detailed Implementation

[0026] Please see Figure 1-6 This utility model provides a technical solution: a five-axis linkage machining center adapter fixture, including a clamping plate 1, a clamping mechanism 2 and a transmission mechanism 3. The clamping mechanism 2 is fixedly connected to the top of the clamping plate 1, and the transmission mechanism 3 is threadedly connected to the bottom of the clamping plate 1.

[0027] The specific setup and function of its clamping mechanism 2 and transmission mechanism 3 will be explained below.

[0028] In this embodiment: the clamping mechanism 2 includes a connecting hole groove 21 that is snapped into the top of the clamping disk 1. An adjusting column 22 is fixedly connected inside the connecting hole groove 21. A small diameter positioning plate 23 is fixedly connected to the outer surface of the adjusting column 22. The small diameter positioning plate 23 and the adjusting column 22 are symmetrically arranged inside the connecting hole groove 21. The clamping mechanism 2 includes a medium diameter clamping assembly 24 fixedly connected to the top of the clamping disk 1. The clamping mechanism 2 includes a large diameter clamping assembly 25 fixedly connected to the outer surface of the clamping disk 1.

[0029] The effects achieved by the above components are as follows: by setting the connecting slot 21, adjusting column 22 and small diameter positioning plate 23, a dedicated positioning and clamping area for small diameter workpieces is formed, providing accurate initial positioning and a stable clamping foundation for small diameter workpieces. The setting of medium diameter clamping component 24 and large diameter clamping component 25 further expands the adaptability of the fixture to workpieces of different sizes, enabling the fixture to meet the processing needs of workpieces of various specifications and significantly improving the versatility of the fixture.

[0030] Specifically, there are five medium-diameter clamping components 24, which are arranged at five equal intervals on the top of the clamping disk 1. Each medium-diameter clamping component 24 includes a placement hole 241 opened on the top of the clamping disk 1, and the five medium-diameter clamping components 24 are in an independent state.

[0031] The effect achieved by the above components is that the five medium-diameter clamping components 24 are arranged in five equal parts and independently, which can flexibly select and activate the corresponding number and position of clamping components according to the specific shape, size and center of gravity distribution of the medium-diameter workpiece. For workpieces with irregular shapes, some clamping components can be activated in a targeted manner.

[0032] Specifically, a piston telescopic rod 242 is fixedly connected inside the placement hole 241, a telescopic spring 243 is sleeved on the outer surface of the piston telescopic rod 242, a sliding plate 244 is fixedly connected to the top of the piston telescopic rod 242 and the telescopic spring 243, a medium-diameter positioning plate 245 is fixedly connected to the top of the sliding plate 244, and a rubber pad 246 is fixedly connected to the outer surface of the medium-diameter positioning plate 245.

[0033] The effect achieved by the above components is as follows: the workpiece applies pressure to the medium-diameter positioning plate 245, pushing the sliding plate 244 to move downward, compressing the piston telescopic rod 242 and the telescopic spring 243. The elastic force generated by the telescopic spring 243 can provide a stable clamping force for the workpiece. Furthermore, the degree of compression of the telescopic spring 243 changes accordingly with the size of the workpiece, realizing automatic adjustment of the clamping force and avoiding workpiece deformation due to excessive clamping force or loosening of the workpiece due to insufficient clamping force.

[0034] Specifically, there are five large-diameter clamping assemblies 25. The large-diameter clamping assemblies 25 are arranged at five equal intervals on the outer surface of the clamping disk 1. Each large-diameter clamping assembly 25 includes a connecting block 251 fixedly connected to the outer surface of the clamping disk 1. A support plate 252 is fixedly connected to the top of the connecting block 251. Threaded holes 253 are provided on both sides of the support plate 252.

[0035] The effect achieved by the above components is that five large-diameter clamping components 25 are distributed at five equal intervals on the outer surface of the clamping plate 1, providing multiple evenly distributed clamping force points for large-diameter workpieces, ensuring that the large-diameter workpieces are subjected to balanced force during the clamping process, and avoiding workpiece deformation or loosening due to uneven force.

[0036] Specifically, the two sides of the support plate 252 are threadedly connected to the adjuster 254 through the threaded hole 253. The bottom of the adjuster 254 is rotatably connected to the bearing 255. The outer surface of the bearing 255 is fixedly connected to the large diameter positioning plate 256, and the outer surface of the bearing 255 is fitted into the interior of the large diameter positioning plate 256.

[0037] The effect achieved by the above components is that, by using the screw drive principle through the rotary adjuster 254, the position of the large-diameter positioning plate 256 can be precisely adjusted so that it can closely fit the outer surface of the large-diameter workpiece, thereby achieving precise clamping of large-diameter workpieces of different diameters and shapes.

[0038] Specifically, the transmission mechanism 3 includes a connecting plate 31 threadedly connected to the bottom of the clamping disk 1. Bolts 32 are threadedly connected to both sides of the connecting plate 31. A servo motor 33 is fixedly connected to the bottom of the connecting plate 31. The servo motor 33 is threadedly connected to the bottom of the clamping disk 1 through the connecting plate 31.

[0039] The effect achieved by the above components is that the connecting plate 31 and the bolt 32 securely mount the servo motor 33 to the bottom of the clamping plate 1, ensuring the reliability of the connection between the transmission mechanism 3 and the clamping plate 1.

[0040] Specifically, a protective shell 34 is fitted onto the outer surface of the servo motor 33, and a protective cover plate 35 is threaded onto the protective shell 34. The servo motor 33 is fixedly connected to the inside of the protective shell 34 through the protective cover plate 35.

[0041] The effect achieved by the above components is that the protective shell 34 and the protective cover 35 form a closed protective space, which can effectively block impurities such as chips, coolant, and dust generated during the processing from entering the interior of the servo motor 33, and prevent these impurities from causing wear, corrosion or short circuit damage to the key components of the motor winding of the servo motor 33.

[0042] Working principle: When using the five-axis linkage machining center adapter fixture, first select the appropriate clamping components according to the diameter of the workpiece. For small-diameter workpieces, place them in the connecting hole slot 21. The small-diameter positioning plate 23 and the adjusting column 22 symmetrically clamp the workpiece. By adjusting the position of the adjusting column 22, the precise positioning and stable clamping of the small-diameter workpiece can be achieved.

[0043] For medium-diameter workpieces, place them above the medium-diameter clamping assembly 24. The workpiece presses down on the medium-diameter positioning plate 245, which drives the sliding plate 244 to compress the piston telescopic rod 242 and the telescopic spring 243. The elastic force of the telescopic spring 243 and the damping force of the piston telescopic rod 242 work together to automatically adjust the clamping force. The rubber pad 246 increases the friction and protects the workpiece surface. The five independent medium-diameter clamping assemblies 24 can be flexibly activated according to the shape of the workpiece to complete the stable clamping of medium-diameter workpieces.

[0044] For large-diameter workpieces, the position of the large-diameter positioning plate 256 is adjusted by the rotary adjuster 254 using threaded transmission. The bearing 255 assists the large-diameter positioning plate 256 to rotate flexibly, so that it fits the surface of the large-diameter workpiece. The five large-diameter clamping components 25 work together to achieve firm clamping of the large-diameter workpiece.

[0045] After clamping is completed, the servo motor 33 is started. The servo motor 33 drives the clamping disk 1 to rotate through the connecting plate 31. According to the machining instructions of the five-axis linkage machining center, the rotation angle, speed and direction of the clamping disk 1 are precisely controlled so that the workpiece can be processed at different angles. During the processing, the protective shell 34 and the protective cover plate 35 protect the servo motor 33 from impurities and ensure that the entire processing process is stable and efficient.

Claims

1. A five-axis linkage machining center adapter fixture, comprising a clamping plate (1), a clamping mechanism (2), and a transmission mechanism (3), characterized in that: The clamping mechanism (2) is fixedly connected to the top of the clamping disk (1), and the transmission mechanism (3) is threadedly connected to the bottom of the clamping disk (1). The clamping mechanism (2) includes a connecting hole groove (21) that is snapped into the top of the clamping disk (1). An adjusting column (22) is fixedly connected inside the connecting hole groove (21). A small diameter positioning plate (23) is fixedly connected to the outer surface of the adjusting column (22). The small diameter positioning plate (23) and the adjusting column (22) are symmetrically arranged inside the connecting hole groove (21). The clamping mechanism (2) includes a medium diameter clamping assembly (24) fixedly connected to the top of the clamping disk (1). The clamping mechanism (2) includes a large diameter clamping assembly (25) fixedly connected to the outer surface of the clamping disk (1).

2. The five-axis linkage machining center adapter fixture according to claim 1, characterized in that: There are five medium-diameter clamping components (24). The medium-diameter clamping components (24) are arranged at five equal intervals on the top of the clamping disk (1). The medium-diameter clamping components (24) include placement holes (241) opened on the top of the clamping disk (1). The five medium-diameter clamping components (24) are in an independent state.

3. The five-axis linkage machining center adapter fixture according to claim 2, characterized in that: A piston telescopic rod (242) is fixedly connected inside the placement hole (241). A telescopic spring (243) is sleeved on the outer surface of the piston telescopic rod (242). A sliding plate (244) is fixedly connected to the top of the piston telescopic rod (242) and the telescopic spring (243). A medium-diameter positioning plate (245) is fixedly connected to the top of the sliding plate (244). A rubber pad (246) is fixedly connected to the outer surface of the medium-diameter positioning plate (245).

4. The five-axis linkage machining center adapter fixture according to claim 1, characterized in that: The large-diameter clamping assembly (25) consists of five parts, which are arranged at five equal intervals on the outer surface of the clamping disk (1). The large-diameter clamping assembly (25) includes a connecting block (251) fixedly connected to the outer surface of the clamping disk (1). A support plate (252) is fixedly connected to the top of the connecting block (251), and threaded holes (253) are provided on both sides of the support plate (252).

5. The five-axis linkage machining center adapter fixture according to claim 4, characterized in that: The support plate (252) has an adjuster (254) threadedly connected to both sides through threaded holes (253). The bottom of the adjuster (254) is rotatably connected to a bearing (255). A large-diameter positioning plate (256) is fixedly connected to the outer surface of the bearing (255). The outer surface of the bearing (255) is fitted into the interior of the large-diameter positioning plate (256).

6. The five-axis linkage machining center adapter fixture according to claim 1, characterized in that: The transmission mechanism (3) includes a connecting plate (31) threaded to the bottom of the clamping disk (1), bolts (32) are threaded to both sides of the connecting plate (31), and a servo motor (33) is fixedly connected to the bottom of the connecting plate (31). The servo motor (33) is threaded to the bottom of the clamping disk (1) through the connecting plate (31).

7. The five-axis linkage machining center adapter fixture according to claim 6, characterized in that: The outer surface of the servo motor (33) is fitted with a protective shell (34), and the protective shell (34) is threadedly connected to a protective cover plate (35). The servo motor (33) is fixedly connected to the inside of the protective shell (34) through the protective cover plate (35).

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