Clamping device for metal forging

Abstract

The application relates to the technical field of metal forging equipment, and discloses a clamping device for metal forging, which comprises a mechanical arm, the end of the mechanical arm is equipped with a fixing frame, the side wall of the fixing frame is fixedly connected with sliding rails, and the clamping device is provided with a fitting mechanism and an auxiliary mechanism in the equipment. When metal blank is pressed during forging, the diameter of the metal blank is increased, the clamps are deformed, the fitting mechanism and the auxiliary mechanism are arranged in the equipment, after the metal blank is placed in a forging machine, the power supply of an electric push rod is cut off, the electric push rod is released from rigid locking and can freely stretch and retract, spring one generates a contraction force, a plurality of sliding blocks one and sliding blocks two are driven by clamping jaws to tightly adhere to the outer wall of the metal blank, a basic clamping process is completed, and spring two is in a semi-compressed state. When the metal blank is expanded in the radial direction under pressure, the expansion pressure forces the two clamping jaws to separate from each other, meanwhile, the contraction force generated by spring one under tension increases the clamping force of the clamping jaws on the metal blank, the clamping jaws can independently adapt to the diameter expansion of the metal blank, and the deformation of the clamping jaws under pressure is reduced.

Description

Technical Field

[0001] This invention relates to the field of metal forging equipment technology, specifically to a clamping device for metal forging. Background Technology

[0002] This metal forging clamping fixture features a hydraulically amplified drive structure. The clamp body is forged from high-temperature resistant alloy steel and is suitable for clamping high-temperature steel ingots and various forgings. The fixture incorporates a self-locking anti-loosening mechanism, ensuring stable and adjustable clamping force and preventing workpiece slippage during forging impacts. It allows for workpiece rotation and flipping positioning, is compatible with all processes of free forging and die forging, and effectively improves forging accuracy and processing efficiency. The fixture is easy to assemble, disassemble, and maintain, adaptable to various billet specifications, and widely used in heavy industry, automotive parts, and aerospace forging production.

[0003] During the forging process, when the stamping equipment extrudes the high-temperature cylindrical billet, the billet expands radially under pressure, increasing in diameter, while the clamping force of the tooling remains constant. The billet continuously expands outward, compressing the clamping body. After repeated forging, the clamping tooling is prone to deformation and damage. To address this defect in the existing technology, this solution proposes an improved structural design. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides a clamping device for metal forging, including a robotic arm, a fixed frame mounted at the end of the robotic arm, a slide rail fixedly connected to the side wall of the fixed frame, two grippers slidably connected to the inner wall of the slide rail, an electric push rod fixedly connected to the side wall of the fixed frame, and the end of the electric push rod away from the fixed frame being fixedly connected to the side wall of the grippers, and further comprising: The bonding mechanism is located on the side wall of the gripper. The bonding mechanism includes a groove formed on the side wall of the gripper. A fixing frame is fixedly connected to the inner wall of the two grippers, and a slider is slidably connected to the inner wall of the fixing frame. An auxiliary mechanism is fixedly installed on the side wall of the gripper. The auxiliary mechanism includes a fixed frame two fixedly connected to the inner wall of the gripper. A sliding groove is opened on the inner wall of the fixed frame two, and a slider two is slidably connected to the inner wall of the sliding groove. The contact mechanism is fixedly installed on the side wall of the auxiliary mechanism; The electric actuator can drive two grippers to move closer together to clamp the metal billet.

[0005] Preferably, the bonding mechanism further includes: A tensioning component is fixedly installed on the inner wall of the groove; The extrusion assembly is fixedly disposed on the inner wall of the slider one; The tensioning component is always kept in a pre-tensioned state, continuously pulling the two grippers inward.

[0006] Preferably, the auxiliary mechanism also includes: The cleaning component is fixedly installed on the inner wall of the gripper; The pressure-bearing component is fixedly installed on the side wall of slider two; When the metal billet is forged, the oxide scale on its surface falls off, and the cleaning component can blow the fallen oxide scale outward.

[0007] Preferably, the contact mechanism further includes: The pressure application component is fixedly installed on the outer wall of the auxiliary mechanism; When the grippers close under the drive of the electric actuator, the pressure application component adheres to the outer wall of the metal billet.

[0008] Preferably, the pulling component includes a spring fixedly connected to the inner wall of the groove; One of the springs is fixed between the two grippers and continuously pulls the two grippers closer together.

[0009] Preferably, the extrusion assembly includes a second spring that is fixedly connected to the inner wall of the first slider; In the normal state, spring 2 is relaxed. When spring 2 is compressed, it undergoes elastic deformation and stores elastic potential energy.

[0010] Preferably, the cleaning component includes an air jet hole fixedly connected to the sidewall of the gripper; The jet nozzle can be connected to an external high-pressure air source to eject airflow outwards.

[0011] Preferably, the pressure-bearing component includes a spring three fixedly connected to the second side wall of the slider; The end of spring three that is furthest from slider two is fixedly connected to the inner wall of the gripper.

[0012] Preferably, the pressure application component includes a contact block one fixedly connected to one side wall of the fixing frame, and a contact block two fixedly connected to one side wall of the fixing frame two; When the electric actuator drives the gripper to hold the metal billet, contact block one and contact block two simultaneously adhere to the outer wall of the metal billet.

[0013] The present invention has the following beneficial effects: ( ) This invention addresses the problem of clamp deformation caused by the increased diameter of metal billets under forging pressure. The equipment includes a clamping mechanism and an auxiliary mechanism. After the metal billet is placed in the forging machine, the two clamps are positioned on the outer wall of the billet, and the power to the electric push rod is cut off. The electric push rod is released from its rigid lock and can extend and retract freely. At this time, spring one generates a contraction force, which drives multiple sliders one and two to adhere tightly to the outer wall of the metal billet through the clamps, completing the basic clamping process. Under this condition, spring two is in a semi-compressed state. When the metal billet expands radially under pressure, the expansion pressure forces the two clamps to separate. Simultaneously, the contraction force generated by the tension of spring one increases the clamping force of the clamps on the metal billet. Through the above design, the clamps can autonomously adapt to the outward expansion of the metal billet's diameter, reducing clamp deformation under pressure.

[0014] (2) The vibration generated by forging in this invention is transmitted to spring 2 and slider 2; the radial expansion direction of the billet is consistent with the vibration transmission direction, slider 1 and slider 2 can slide to buffer and absorb part of the vibration, and the sliding pair of the slide rail and the gripper further reduces the vibration, weakens the transmission of vibration to the mechanical arm connection part, and protects the connection structure.

[0015] (3) After the forging is completed, the electric push rod drives the jaws to close and clamp the billet. The slider one and slider two are compressed and shrink inward, and the contact block one and contact block two are attached to the outer wall of the billet. If the surface of the billet is uneven, the compressed spring two and spring three can push the slider to extend outward to fit the billet, preventing slippage and loosening caused by the small local contact area.

[0016] (4) In practical application, even if the outer wall of the metal billet is in an irregular state, the slider one can still be tightly attached to the outer wall of the metal billet under the push of the spring two, so that the equipment can adapt to clamping metal billets of different shapes. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure and working state of the present invention; Figure 2 This is a cross-sectional view of the overall structure of the present invention; Figure 3 This is a cross-sectional schematic diagram of the tension component of the present invention; Figure 4 This is a schematic diagram of the gripper of the present invention; Figure 5This is a cross-sectional schematic diagram of the auxiliary mechanism of the present invention; Figure 6 This is a partial schematic diagram of the component for clearing the obstruction in this invention; Figure 7 This is a schematic diagram of the contact mechanism of the present invention; Figure 8 This is a schematic diagram of the gripper holding state of the present invention.

[0019] The attached diagram lists the components represented by each number as follows: In the diagram: 1. Adhesion mechanism; 11. Pulling assembly; 12. Extrusion assembly; 13. Robotic arm; 14. Fixing frame; 15. Slide rail; 16. Gripper; 17. Electric push rod; 111. Groove; 112. Spring 1; 121. Fixing frame 1; 122. Slider 1; 123. Spring 2; 2. Auxiliary mechanism; 21. Cleaning assembly; 22. Pressure-bearing assembly; 211. Fixing frame 2; 212. Slide groove; 213. Air jet; 221. Slider 2; 222. Spring 3; 3. Contact mechanism; 31. Pressure-applying assembly; 311. Contact block 1; 312. Contact block 2. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Example 1, please refer to Figures 1-7 This invention relates to a clamping device for metal forging, comprising a robotic arm 13, a fixed frame 14 mounted at the end of the robotic arm 13, a slide rail 15 fixedly connected to the side wall of the fixed frame 14, two grippers 16 slidably connected to the inner wall of the slide rail 15, an electric push rod 17 fixedly connected to the side wall of the fixed frame 14, and one end of the electric push rod 17 away from the fixed frame 14 fixedly connected to the side wall of the grippers 16, and further comprising: The bonding mechanism 1 is located on the side wall of the gripper 16. The bonding mechanism 1 includes a groove 111 formed on the side wall of the gripper 16. A fixing frame 121 is fixedly connected to the inner wall of the two grippers 16. A slider 122 is slidably connected to the inner wall of the fixing frame 121. Auxiliary mechanism 2 is fixedly installed on the side wall of gripper 16. Auxiliary mechanism 2 includes a fixed frame 211 fixedly connected to the inner wall of gripper 16. A sliding groove 212 is provided on the inner wall of fixed frame 211. A slider 221 is slidably connected to the inner wall of sliding groove 212. Contact mechanism 3 is fixedly installed on the side wall of auxiliary mechanism 2; Before use, the equipment is installed in the required position. After debugging, the robotic arm 13 will drive the fixed frame 14 to approach the metal billet. When the metal billet is between the two grippers 16, the electric push rod 17 pushes the two grippers 16 to approach each other to perform the clamping process on the metal billet.

[0022] The bonding mechanism 1 also includes: Pulling component 11 is fixedly disposed on the inner wall of groove 111; The extrusion assembly 12 is fixedly disposed on the inner wall of the slider 122; The tensioning component 11 is always kept in a pre-tensioned state, continuously pulling the two grippers 16 inward.

[0023] Auxiliary mechanism 2 also includes: Cleaning component 21 is fixedly disposed on the inner wall of gripper 16; The pressure-bearing component 22 is fixedly installed on the side wall of the slider 221; When the metal billet is forged, the oxide scale on its surface falls off, and the removal component 21 can blow the fallen oxide scale outward.

[0024] Contact mechanism 3 also includes: Pressure application component 31 is fixedly installed on the outer wall of auxiliary mechanism 2; When the gripper 16 closes under the drive of the electric push rod 17, the pressure component 31 adheres to the outer wall of the metal billet.

[0025] Example 2, please refer to Figures 2-8 The present invention is a clamping device for metal forging. Based on the first embodiment, the pulling component 11 includes a spring 112 fixedly connected to the inner wall of the groove 111. By utilizing the design of multiple sliders 122 and slider 221, even if the outer wall of the metal billet is in an irregular state, slider 122 can still be tightly attached to the outer wall of the metal billet under the push of spring 223, so that the equipment can adapt to clamping metal billets of different shapes.

[0026] The extrusion assembly 12 includes a spring 123 that is fixedly connected to the inner wall of the slider 122; To address the issue of fixture deformation caused by the increased diameter of metal billets under forging pressure, a clamping mechanism 1 and an auxiliary mechanism 2 are installed inside the equipment. After the metal billet is placed in the forging machine, the two grippers 16 are positioned on the outer wall of the metal billet, and the power supply to the electric push rod 17 is cut off. The electric push rod 17 is released from its rigid lock and can extend and retract freely. At this time, spring 112 will generate a contraction force, which will drive multiple sliders 122 and slider 221 to press tightly against the outer wall of the metal billet through the grippers 16, completing the basic clamping process. Under this condition, spring 2123 is in a semi-compressed state.

[0027] The cleaning component 21 includes an air jet 213 fixedly connected to the side wall of the gripper 16; When the metal billet expands radially under pressure, the expanding pressure will force the two jaws 16 to separate from each other. At the same time, the contraction force generated by the tension of the spring 112 will increase the clamping force of the jaws 16 on the metal billet. Through the above design, the jaws 16 can autonomously adapt to the outward expansion of the diameter of the metal billet and reduce the deformation of the jaws under pressure.

[0028] The pressure-bearing component 22 includes a spring 222 fixedly connected to the side wall of the slider 221; The design of the above-mentioned equipment for clamping metal billets includes a second spring 123 and a gripper 16 inside the equipment. During the forging process of the metal billet, the metal billet only contacts the outer wall of the second spring 123 and the second slider 221. When the metal billet is impacted and vibrates, the vibration is transmitted to the positions of the second spring 123 and the second slider 221. Since the metal billet expands radially, the general direction of the vibration is the same as the direction of expansion. At this time, the sliding of the first slider 122 and the second slider 221 will offset part of the vibration. Similarly, the sliding of the slide rail 15 and the gripper 16 can also offset a small part of the vibration. Through the above design, the vibration transmission is effectively weakened, and the impact of vibration on the connecting parts of the robotic arm 13 is reduced.

[0029] The pressure application assembly 31 includes a contact block 311 fixedly connected to the side wall of the first fixing frame 121, and a contact block 312 fixedly connected to the side wall of the second fixing frame 211. After forging is completed, the electric actuator 17 drives the jaws 16 to clamp the metal billet. At this time, slider 122 and slider 221 will slide inward under pressure, as shown in the figure. Figure 7 As shown, at this time, contact block 311 and contact block 312 will contact the outer wall of the metal billet to complete the clamping process. At this time, when the outer wall of the metal billet is uneven, the compressed spring 222 and spring 123 will push slider 221 and slider 122 outward and stick to the metal billet. Through the above design, the phenomenon of unstable clamping caused by uneven outer wall of metal billet and small contact surface between jaw 16 and metal billet is effectively avoided.

[0030] A specific application of this embodiment is as follows: Before use, the equipment is installed in the required position. After debugging, the robotic arm 13 will drive the fixed frame 14 to approach the metal billet. When the metal billet is between the two grippers 16, the electric push rod 17 pushes the two grippers 16 to approach each other and perform the clamping process on the metal billet. To address the issue of clamp deformation caused by the increased diameter of metal billets under forging pressure, a clamping mechanism 1 and an auxiliary mechanism 2 are installed inside the equipment. After the metal billet is placed in the forging machine, the two jaws 16 are positioned on the outer wall of the metal billet, and the power supply to the electric push rod 17 is cut off. The electric push rod 17 is released from its rigid lock and can extend and retract freely. At this time, spring 112 will generate a contraction force, which will drive multiple sliders 122 and 221 to press tightly against the outer wall of the metal billet through the jaws 16, completing the basic clamping process. Under this condition, spring 123 is in a semi-compressed state. When the metal billet expands radially under pressure, the expansion pressure will force the two jaws 16 to separate from each other. At the same time, the contraction force generated by the tension of spring 112 will increase the clamping force of the jaws 16 on the metal billet. Through the above design, the jaws 16 can autonomously adapt to the outward expansion of the diameter of the metal billet, reducing the deformation of the jaws under pressure.

[0031] The design of the above-mentioned equipment for clamping metal billets includes a second spring 123 and a gripper 16 inside the equipment. During the forging process of the metal billet, the metal billet only contacts the outer wall of the second spring 123 and the second slider 221. When the metal billet is impacted and vibrates, the vibration is transmitted to the positions of the second spring 123 and the second slider 221. Since the metal billet expands radially, the general direction of the vibration is the same as the direction of expansion. At this time, the sliding of the first slider 122 and the second slider 221 will offset part of the vibration. Similarly, the sliding of the slide rail 15 and the gripper 16 can also offset a small part of the vibration. Through the above design, the vibration transmission is effectively weakened, and the impact of vibration on the connecting parts of the robotic arm 13 is reduced.

[0032] Utilizing the aforementioned design of billet deformation under impact, multiple sliders 122 and 221 are installed inside the equipment. When the metal billet deforms under pressure, the lack of mold constraint on the outer wall of the billet makes it difficult to ensure equal outward expansion in all directions. After forging, small indentations or protrusions appear on the outer wall of the metal billet. After forging, the electric actuator 17 drives the gripper 16 to clamp the metal billet. At this time, sliders 122 and 221 slide inward under pressure, presenting a shape as follows: Figure 7As shown, at this time, contact block 311 and contact block 312 will contact the outer wall of the metal billet to complete the clamping process. At this time, when the outer wall of the metal billet is uneven, the compressed spring 222 and spring 123 will push slider 221 and slider 122 outward and stick to the metal billet. Through the above design, the phenomenon of unstable clamping caused by uneven outer wall of metal billet and small contact surface between jaw 16 and metal billet is effectively avoided.

[0033] By utilizing the design of multiple sliders 122 and slider 221, even if the outer wall of the metal billet is in an irregular state, slider 122 can still be tightly attached to the outer wall of the metal billet under the push of spring 223, so that the equipment can adapt to clamping metal billets of different shapes.

[0034] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A clamping device for metal forging, comprising a robotic arm (13), wherein a fixed frame (14) is mounted at the end of the robotic arm (13), a slide rail (15) is fixedly connected to the side wall of the fixed frame (14), two grippers (16) are slidably connected to the inner wall of the slide rail (15), an electric push rod (17) is fixedly connected to the side wall of the fixed frame (14), and one end of the electric push rod (17) away from the fixed frame (14) is fixedly connected to the side wall of the grippers (16), further comprising: The bonding mechanism (1) is located on the side wall of the gripper (16). The bonding mechanism (1) includes a groove (111) opened on the side wall of the gripper (16). A fixing frame (121) is fixedly connected to the inner wall of the two grippers (16). A slider (122) is slidably connected to the inner wall of the fixing frame (121). Auxiliary mechanism (2) is fixedly installed on the side wall of the gripper (16). The auxiliary mechanism (2) includes a fixed frame two (211) fixedly connected to the inner wall of the gripper (16). A sliding groove (212) is provided on the inner wall of the fixed frame two (211). A sliding block two (221) is slidably connected to the inner wall of the sliding groove (212). Contact mechanism (3), which is fixedly installed on the side wall of auxiliary mechanism (2); Among them, the electric actuator (17) can drive the two jaws (16) to move closer to each other and clamp the metal billet.

2. The clamping device for metal forging according to claim 1, characterized in that: The bonding mechanism (1) further includes: A tensioning assembly (11) is fixedly disposed on the inner wall of the groove (111); The extrusion assembly (12) is fixedly disposed on the inner wall of the slider (122); Among them, the pulling component (11) always maintains a tensioned state and continuously pulls the two grippers (16) inward.

3. A clamping device for metal forging according to claim 2, characterized in that: The auxiliary mechanism (2) also includes: A cleaning component (21) is fixedly disposed on the inner wall of the gripper (16); The pressure-bearing component (22) is fixedly disposed on the side wall of the second slider (221); When the metal billet is forged, the oxide scale on the surface falls off, and the cleaning component (21) can blow the fallen oxide scale outward.

4. A clamping device for metal forging according to claim 3, characterized in that: The contact mechanism (3) further includes: Pressure application component (31), which is fixedly installed on the outer wall of auxiliary mechanism (2); When the gripper (16) closes under the drive of the electric push rod (17), the pressure component (31) adheres to the outer wall of the metal billet.

5. A clamping device for metal forging according to claim 4, characterized in that: The pulling assembly (11) includes a spring (112) fixedly connected to the inner wall of the groove (111). Among them, spring 1 (112) is fixed between the two grippers (16) and continuously pulls the two grippers (16) closer together.

6. A clamping device for metal forging according to claim 2, characterized in that: The extrusion assembly (12) includes a spring (123) fixedly connected to the inner wall of the slider (122); In the normal state, spring 2 (123) is in a relaxed state. When spring 2 (123) is compressed, it undergoes elastic deformation and stores elastic potential energy.

7. A clamping device for metal forging according to claim 3, characterized in that: The cleaning assembly (21) includes an air jet (213) fixedly connected to the side wall of the gripper (16). Among them, the jet hole (213) can be connected to a high-pressure air source to spray airflow outward.

8. A clamping device for metal forging according to claim 3, characterized in that: The pressure-bearing component (22) includes a spring (222) fixedly connected to the side wall of the slider (221); Among them, the end of spring three (222) away from slider two (221) is fixedly connected to the inner wall of the gripper (16).

9. A clamping device for metal forging according to claim 4, characterized in that: The pressure application component (31) includes a contact block (311) fixedly connected to the side wall of the first fixing frame (121), and a contact block (312) fixedly connected to the side wall of the second fixing frame (211). When the electric push rod (17) drives the gripper (16) to clamp the metal billet, the first contact block (311) and the second contact block (312) simultaneously adhere to the outer wall of the metal billet.

Images