Large barrel forge piece positioning and machining tool

Abstract

The utility model provides a large barrel forge piece positioning and machining tool which comprises a base, two electric sliding seats and two electric rotary tables, the two electric sliding seats are installed on the two sides of the top of the base in a sliding mode, bearing plates are fixedly installed on the tops of the two electric sliding seats, and the two electric rotary tables penetrate through the opposite sides of the two bearing plates respectively. Compared with the prior art, the clamp has the following beneficial effects that through the synergistic effect of the inner supporting assembly and the clamping assembly, the positioning stability and accuracy of the barrel forge piece are greatly enhanced, the machining precision is ensured, and the machining efficiency is improved. And a transmission wheel driven by an electromagnetic bearing is mounted in the inner supporting assembly, so that in-situ flexible adjustment of the barrel forge piece is achieved, the machining position can be adjusted without disassembly, the situation that a tool shields a machining area is effectively avoided, the clamping frequency and time waste are reduced, machining equipment can continuously machine multiple parts of the forge piece, and the machining efficiency is improved. And the positioning machining efficiency is remarkably improved.

Description

Technical Field

[0001] This utility model is a positioning and machining tooling for large cylindrical forgings, belonging to the field of positioning and machining equipment for large cylindrical forgings. Background Technology

[0002] In the machinery manufacturing industry, large cylindrical forgings are widely used in many key fields such as aerospace, shipbuilding, and energy equipment. Their processing quality directly affects the performance and safety of related equipment. Large cylindrical forging positioning and machining fixtures are a type of equipment used in the machinery manufacturing field, specifically designed to provide precise positioning and stable support for large cylindrical forgings during the processing.

[0003] When positioning large cylindrical forgings, traditional tooling often struggles to ensure that the workpiece's position is not obstructed. If the workpiece's position is obstructed, traditional tooling typically requires removing the forging from the tooling and re-clamping it to adjust the workpiece's position. This method is not only time-consuming and labor-intensive, increasing the number of clamping operations and time costs, but also prone to surface damage from frequent disassembly, reducing the continuity and efficiency of large cylindrical forging processing.

[0004] In summary, this utility model provides a positioning and machining fixture for large cylindrical forgings to solve the above problems. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a positioning and machining fixture for large cylindrical forgings, so as to solve the problem mentioned in the background art that large cylindrical forgings need to be re-clamped when the position is adjusted, resulting in reduced production efficiency.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a positioning and processing fixture for a large cylindrical forging, comprising a base, two electric slides and two electric turntables. The two electric slides are slidably installed on both sides of the top of the base. A load-bearing plate is fixedly installed on the top of each of the two electric slides. The two electric turntables pass through the opposite sides of the two load-bearing plates. A circular plate is fixedly installed at the opposite end of each of the two electric turntables. An inner support assembly is fixedly installed at the center of the opposite side of each of the two circular plates. Four clamping components are evenly fixedly installed around the inner support assembly on the opposite side of each of the two circular plates.

[0007] Furthermore, the inner support assembly includes a fixed base, which is fixedly installed at the center of one side of the circular plate. First electric push rods are fixedly installed on all four sides of the fixed base. Inner support plates are fixedly installed at the ends of the four first electric push rods that are separated from each other. The four inner support plates are all curved in an arc shape, and the sides of the four inner support plates that are separated from each other are all convex in an arc shape.

[0008] Furthermore, three mounting slots are provided on each of the four inner support plates on opposite sides. A drive shaft is rotatably mounted between the two sides of the inner wall of each mounting slot via an electromagnetic bearing. A drive wheel is fixedly fitted on the shaft surface of each drive shaft. One side of the wheel surface of each drive wheel extends to the outside of the mounting slot. A rubber sleeve is fixedly fitted on the outside of each drive wheel.

[0009] Furthermore, the clamping assembly includes a fixing plate, which is fixedly installed on one side of the circular plate. Two second electric push rods are fixedly installed on the side of the fixing plate facing the center of the circular plate. A connecting seat is fixedly installed between the output ends of the two second electric push rods. A clamping plate is fixedly installed on the side of the connecting seat facing the center of the circular plate.

[0010] Furthermore, the clamping plate is curved in an arc shape, with its concave arc surface facing the center of the circular plate.

[0011] Furthermore, a second anti-slip pad is fixedly installed on the concave arc surface of the clamping plate, and the second anti-slip pad has a wavy raised texture on the side near the center of the circular plate.

[0012] Furthermore, limit support rods are fixedly installed on both sides of the outer convex surface of the clamping plate. One end of each limit support rod penetrates through the fixing plate, and a limit block is fixedly installed on one end of each limit support rod. The fixing plate has through holes that cooperate with the two limit support rods to pass through, and a rubber ring is fixedly adhered inside the through holes.

[0013] The beneficial effects of this utility model are:

[0014] The synergistic effect of the internal support assembly and the clamping assembly greatly enhances the positioning stability and accuracy of the cylindrical forging, ensuring machining precision. Furthermore, the internal support assembly is equipped with a transmission wheel driven by an electromagnetic bearing, enabling flexible in-situ adjustment of the cylindrical forging. The machining position can be adjusted without disassembly, effectively avoiding tooling obstructing the machining area, reducing the number of clamping operations and time wastage, and allowing the machining equipment to continuously process multiple parts of the forging, significantly improving positioning and machining efficiency. Attached Figure Description

[0015] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0016] Figure 1 This is a perspective view of a positioning and machining fixture for a large cylindrical forging according to the present invention.

[0017] Figure 2 This is a front view of a positioning and machining fixture for a large cylindrical forging according to this utility model;

[0018] Figure 3 for Figure 2Side view of the clamping component shown;

[0019] Figure 4 for Figure 2 Side sectional view of the clamping assembly shown;

[0020] Figure 5 for Figure 3 Side sectional view of the internal support assembly.

[0021] In the diagram: 1. Base; 2. Electric slide; 3. Load-bearing plate; 4. Electric turntable; 5. Circular plate; 6. Internal support assembly; 7. Clamping assembly; 61. Fixed seat; 62. First electric push rod; 63. Internal support plate; 64. Mounting groove; 65. Drive shaft; 66. Drive wheel; 67. Rubber sleeve; 71. Fixed plate; 72. Second electric push rod; 73. Connecting seat; 74. Clamping plate; 75. Second anti-slip rubber pad; 76. Limiting support rod; 77. Limiting block. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] Please see Figure 1-5This utility model provides a technical solution: a positioning and processing fixture for large cylindrical forgings, including a base 1, two electric slides 2, and two electric turntables 4. The two electric slides 2 are slidably installed on both sides of the top of the base 1. A load-bearing plate 3 is fixedly installed on the top of each of the two electric slides 2. The two electric turntables 4 pass through opposite sides of the two load-bearing plates 3. A circular plate 5 is fixedly installed at the opposite end of each of the two electric turntables 4. An inner support assembly 6 is fixedly installed at the center of the opposite side of each of the two circular plates 5. Four clamping assemblies 7 are evenly fixedly installed around the inner support assembly 6 on the opposite side of each of the two circular plates 5. The electric turntable 4 is an electric device capable of circumferential rotation, mainly composed of a motor, transmission mechanism, and rotating platform. The motor provides power, and the transmission mechanism (such as worm gear, gear transmission, etc.) reduces the speed and increases the torque, driving the rotating platform to rotate smoothly. Depending on the application scenario and functional requirements, there are various types. In industrial automated production lines, such as 3C product manufacturing, it is used for high-precision assembly and positioning of parts, relying on its high-precision angular... The high-precision control ensures accurate installation of components. In the field of large equipment manufacturing, such as the processing of large components for ships and bridges, the electric rotary table 4 can rotate the workpiece to facilitate multi-face processing, improving processing efficiency and accuracy. The electric rotary table 4 can not only achieve horizontal rotation but also precisely control the rotation angle, which is crucial for multi-angle positioning of large cylindrical forgings during processing. When performing multi-face processing on cylindrical forgings, the electric rotary table 4 can rotate the forging to the appropriate angle, reducing errors and labor intensity caused by manual adjustment, and improving processing efficiency and accuracy. The electric slide 2 is an electric device that realizes linear reciprocating motion. It generally includes a motor, a lead screw and nut pair, a guide rail and slider pair, and a slide body. The motor drives the lead screw to rotate, and the lead screw drives the nut and the slide connected to it to move linearly along the guide rail. Due to its high-precision linear motion characteristics, it is widely used in various industries. In laser cutting equipment, it drives the cutting head to move precisely to ensure cutting accuracy. In automated warehousing and logistics systems, it is responsible for the linear handling and sorting of goods, improving logistics operation efficiency.

[0024] Please see Figure 2-5The design of the inner support assembly 6 fully considers the fixing requirements of large cylindrical forgings with different inner diameters. The inner support assembly 6 includes a fixing seat 61, which is firmly fixed to the center of one side of the circular plate 5, providing a solid installation foundation for the entire inner support assembly 6. First electric push rods 62 are fixedly installed on all four sides of the fixing seat 61. By precisely adjusting the extension and retraction length of the first electric push rods 62, the four inner support plates 63 can accurately conform to the inner walls of large cylindrical forgings with different inner diameters. All four inner support plates 63 are curved in an arc shape. This shape design allows for better contact with the inner wall of the cylindrical forging, increasing the contact area and improving the fixing effect. Three mounting slots 64 are provided on the opposite sides of each of the four inner support plates 63. Both sides of the inner wall of each mounting slot 64 are rotatably mounted with drive shafts 65 via electromagnetic bearings. Electromagnetic bearings, also known as electromagnetic levitation bearings, utilize electromagnetic force to levitate the shaft, achieving contactless support and operation. Compared to traditional mechanical bearings, they have fundamental differences and significant advantages. The working principle of electromagnetic bearings is based on electromagnetics and control theory. It mainly consists of a stator, rotor, sensor, and controller. Electromagnetic coils are arranged on the stator. When current passes through the electromagnetic coils, a magnetic field is generated. This magnetic field exerts an electromagnetic force on the rotor, thus leviting it. The sensor monitors the rotor's position and status in real time. Once the rotor deviates from the predetermined position, the controller quickly adjusts the current in the electromagnetic coils. By adjusting the size and direction of the magnetic field, the strength and direction of the magnetic field are changed, causing the rotor to return to its predetermined position, thus ensuring stable levitation and rotation of the rotor. In the internal support assembly 6 of this tooling, the electromagnetic bearing is installed between the two sides of the inner wall of the mounting groove 64 to support the rotation of the drive shaft 65. Its non-contact characteristic greatly reduces friction during rotation. Compared to traditional mechanical bearings, electromagnetic bearings do not have wear issues, do not require frequent lubrication, reduce maintenance costs and frequency, and improve the reliability and stability of equipment operation. Moreover, by reducing the heat generated by friction, component deformation and performance degradation caused by high temperatures are avoided, further improving the precision and service life of the tooling. This is particularly relevant in the machining of large cylindrical forgings. During the process, the inner support assembly 6 needs to work for a long time and at a high frequency. The electromagnetic bearing can adapt to this high-intensity working environment, ensuring that the drive shaft 65 rotates smoothly and stably at all times. This allows the drive wheel 66 and the rubber sleeve 67 to better play their roles in assisting transmission and protecting the inner wall of the forging. Each drive shaft 65 has a drive wheel 66 fixedly fitted on its shaft surface. One side of the wheel surface of each drive wheel 66 extends to the outside of the mounting groove 64. Each drive wheel 66 has a rubber sleeve 67 fixedly fitted on its outside. The rubber sleeve 67 has good elasticity and friction. During the rotation processing of the cylindrical forging, it can make close contact with the inner wall of the forging, playing an auxiliary transmission role on the one hand, and effectively protecting the inner wall of the forging from scratches on the other hand.

[0025] Please see Figure 3-4The clamping assembly 7 includes a fixing plate 71, which is fixedly installed on one side of the circular plate 5. Two second electric push rods 72 are fixedly installed on the side of the fixing plate 71 facing the center of the circular plate 5. A connecting seat 73 is fixedly installed between the output ends of the two second electric push rods 72. A clamping plate 74 is fixedly installed on the side of the connecting seat 73 facing the center of the circular plate 5. By controlling the extension and retraction of the second electric push rods 72, the distance between the clamping plate 74 and the cylindrical forging can be adjusted, realizing the clamping and releasing operation of the cylindrical forging. The clamping plate 74 is arc-shaped, with its concave arc surface facing the center of the circular plate 5. This design... The clamping plate 74 is equipped with a second anti-slip pad 75, which can better fit the outer wall of the cylindrical forging and improve the stability of clamping. The concave arc surface of the clamping plate 74 is fixedly installed with a second anti-slip pad 75. The side of the second anti-slip pad 75 near the center of the circular plate 5 is also provided with a wavy raised texture, which is also to increase the friction between the clamping plate 74 and the outer wall of the cylindrical forging and prevent the forging from shifting during processing. Since the cylindrical forging only rotates 360° during the rotation processing and the electric turntable 4 can rotate in the opposite direction to reset, the external power cords connected to the first electric push rod 62 and the second electric push rod 72 will not be tangled.

[0026] Please see Figure 3-4 Limiting support rods 76 are fixedly installed on both sides of the outer convex surface of the clamping plate 74. One end of each limiting support rod 76 penetrates through the fixing plate 71, and the fixing plate 71 has through holes for the two limiting support rods 76 to pass through. A rubber ring is fixedly bonded inside the through hole. A limiting block 77 is fixedly installed on one end of the limiting support rod 76. The setting of the limiting support rod 76 and the limiting block 77 effectively limits the movement range of the clamping plate 74, preventing the clamping plate 74 from moving excessively during clamping and damaging the cylinder forging or affecting the positioning accuracy. At the same time, the rubber ring in the through hole plays a role in buffering and sealing, reducing the friction between the limiting support rod 76 and the fixing plate 71, and improving the service life of the equipment.

[0027] Specific implementation method: Before using the tooling, according to the size of the large cylindrical forging, start the two electric slides 2 on the base 1. The electric slides 2 slide on both sides of the top of the base 1, driving the upper load-bearing plate 3, electric turntable 4 and other components to move. Adjust the distance between the two electric turntables 4 to match the length of the cylindrical forging, so as to prepare for subsequent positioning and processing.

[0028] The large cylindrical forging is placed between the two circular plates 5 of the tooling. The first electric push rod 62 in the inner support assembly 6 is activated. The extension length of the first electric push rod 62 is adjusted according to the inner diameter of the cylindrical forging. The first electric push rod 62 pushes the arc-shaped inner support plate 63 to move radially until the rubber sleeve 67 is evenly attached to the inner wall, generating initial contact pressure to prevent axial slippage. This achieves the inner support fixation of the cylindrical forging. When it is necessary to move the cylindrical forging left or right, there is no need to remove the cylindrical forging from the tooling for adjustment. It is only necessary to activate the electromagnetic bearings at the ends of the transmission shafts 65 inside each mounting slot 64 to make the transmission shafts 65 rotate. The transmission shafts 65 drive the transmission wheels 66 to rotate. The forward and reverse rotation of the transmission wheels 66 can drive the cylindrical forging to move left and right for adjustment. This can effectively avoid the phenomenon that the processing position of the cylindrical forging is blocked by the positioning tooling, allowing for flexible adjustment and improving the positioning and processing efficiency of the cylindrical forging.

[0029] After the internal support is positioned, the second electric push rod 72 in the clamping assembly 7 is activated. The second electric push rod 72 extends and retracts, driving the connecting seat 73 and the clamping plate 74 fixed on one side to move. By controlling the extension and retraction of the second electric push rod 72, the distance between the clamping plate 74 and the outer wall of the cylindrical forging is adjusted, so that the clamping plate 74, which is curved in an arc shape and has its concave arc surface facing the center of the circular plate 5, fits tightly against the outer wall of the cylindrical forging. The second anti-slip rubber pad 75 fixed on the concave arc surface of the clamping plate 74 further enhances the wave-shaped raised texture. The friction between the large plate 74 and the outer wall of the cylindrical forging prevents the forging from shifting during processing, thus completing the clamping and positioning of the cylindrical forging. During this process, the limiting support rods 76 on both sides of the outer convex surface of the clamping plate 74 slide within the through holes of the fixing plate 71. The limiting block 77 restricts the movement range of the clamping plate 74, preventing excessive movement that could damage the cylindrical forging or affect the positioning accuracy. The rubber rings adhered within the through holes act as buffers and seals, reducing friction between the limiting support rods 76 and the fixing plate 71 and extending the service life of the equipment.

[0030] When performing multi-face machining on the cylindrical forging, the electric turntable 4 is activated. The electric turntable 4 can not only rotate in the horizontal direction, but also precisely control the rotation angle. According to the machining process requirements, the cylindrical forging is rotated to a suitable angle, allowing the machining equipment to process different faces of the cylindrical forging. This process reduces the error and labor intensity of manual adjustment, and improves the machining efficiency and accuracy. Since the cylindrical forging only rotates 360° during the rotation machining process, and the electric turntable 4 can rotate in the opposite direction to reset, the external power cords connected to the first electric push rod 62 and the second electric push rod 72 will not become tangled.

[0031] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A positioning and machining fixture for large cylindrical forgings, comprising a base, two electric slides, and two electric rotary tables, characterized in that: Two electric slide blocks are slidably mounted on both sides of the top of the base. A load-bearing plate is fixedly mounted on the top of each of the two electric slide blocks. Two electric turntables pass through the opposite sides of the two load-bearing plates. A circular plate is fixedly mounted on the opposite end of each of the two electric turntables. An inner support assembly is fixedly mounted at the center of the opposite side of each of the two circular plates. Four clamping assemblies are evenly fixedly mounted around the inner support assembly on the opposite side of each of the two circular plates.

2. The positioning and machining fixture for a large cylindrical forging according to claim 1, characterized in that: The inner support assembly includes a fixed base, which is fixedly installed at the center of one side of the circular plate. First electric push rods are fixedly installed on all four sides of the fixed base. Inner support plates are fixedly installed at the ends of the four first electric push rods that are separated from each other. The four inner support plates are all curved in an arc shape, and the sides of the four inner support plates that are separated from each other are all convex in an arc shape.

3. The positioning and machining fixture for a large cylindrical forging according to claim 2, characterized in that: Each of the four inner support plates has three mounting slots on one side. A drive shaft is rotatably mounted between the two sides of the inner wall of each mounting slot via an electromagnetic bearing. A drive wheel is fixedly fitted on the shaft surface of each drive shaft. One side of the wheel surface of each drive wheel extends to the outside of the mounting slot. A rubber sleeve is fixedly fitted on the outside of each drive wheel.

4. The positioning and machining fixture for a large cylindrical forging according to claim 1, characterized in that: The clamping assembly includes a fixing plate, which is fixedly installed on one side of the circular plate. Two second electric push rods are fixedly installed on the side of the fixing plate facing the center of the circular plate. A connecting seat is fixedly installed between the output ends of the two second electric push rods. A clamping plate is fixedly installed on the side of the connecting seat facing the center of the circular plate.

5. The positioning and machining fixture for a large cylindrical forging according to claim 4, characterized in that: The clamping plate is curved in an arc shape, with its concave arc surface facing the center of the circular plate.

6. The positioning and machining fixture for a large cylindrical forging according to claim 5, characterized in that: The concave arc surface of the clamping plate is fixedly equipped with a second anti-slip pad, and the side of the second anti-slip pad near the center of the circular plate is provided with a wavy raised texture.

7. The positioning and machining fixture for a large cylindrical forging according to claim 4, characterized in that: Limiting support rods are fixedly installed on both sides of the outer convex surface of the clamping plate. One end of each limiting support rod penetrates through the fixing plate, and a limiting block is fixedly installed on one end of each limiting support rod. The fixing plate has through holes that cooperate with the two limiting support rods to pass through, and a rubber ring is fixedly adhered inside the through holes.

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