Self-adapting clamping tool for drill forging

Abstract

The present application belongs to the technical field of drill processing equipment, and particularly relates to a self-adaptive clamping tool for drill forging, comprising a truss, a mechanical hand is arranged on the transverse moving mechanism, a clamping assembly is arranged on the movable end of the mechanical hand, the clamping assembly comprises a stable frame designed in a U shape, a conveying clamping mechanism capable of being adjusted in a transverse telescopic manner is arranged below the stable frame, a rotary clamping mechanism is arranged below each of the front and rear sides of the middle section of the stable frame, a driving mechanism is arranged above each of the two sides of the stable frame, the driving mechanism is in transmission connection with the conveying clamping mechanism to provide a driving force for clamping the workpiece, and the driving mechanism is linked with the clamping action of the rotary clamping mechanism. The present application effectively adapts to the clamping after drill forging, improves the forging clamping stability and processing precision, can feed the workpiece to realize segmented forging, improves the drill forging processing efficiency and product quality, and meets the production and processing use requirements.

Description

Technical Field

[0001] This invention belongs to the field of drill bit processing technology and equipment, and particularly relates to an adaptive clamping fixture for drill bit forging. Background Technology

[0002] As a core component in mining and infrastructure rock drilling, the forging quality of drill bits directly determines their structural strength, wear resistance, and service life. Segmented high-temperature forging is the mainstream process for drill bit forming. In the entire forging process of drill bits, the clamping fixture plays a crucial role in positioning, fixing, and assisting in feeding high-temperature workpieces. The clamping adaptability, stability, and adjustment flexibility of the fixture are key to ensuring forging accuracy and improving processing efficiency.

[0003] Currently, the traditional forging clamping fixtures used in the market have relatively fixed structural designs. They can only be used to clamp the workpiece end in a fixed, rigid manner, and are limited in function and versatility. They have certain drawbacks in actual forging production and are difficult to adapt to the needs of precision and segmented forging processes, as detailed below: After the initial forging, the drill bit blank undergoes deformation, tending towards the finished product shape. The original regular outer contour of the workpiece changes, and the clamping structure of conventional clamping fixtures cannot adaptively fit the deformed outer contour of the workpiece. The adaptability is poor, which affects the subsequent clamping and conveying of the workpiece and reduces the finished product qualification rate and processing quality of the drill bit forging.

[0004] Traditional drill bit clamping fixtures generally lack adaptive feed adjustment capabilities, and their clamping positions are fixed, making it impossible to adjust the feeding and position according to the segmented forging process requirements of the workpiece. In actual production, after a workpiece completes a localized single forging process, only that localized area meets the forming standards, while the remaining unprocessed area can still be forged. However, due to the inability of the fixture to adjust the feed position, the entire workpiece must be returned to the furnace for calcination and then clamped and processed again as a whole. This processing method restricts the production process, is cumbersome, and not only wastes thermal energy and material resources, increasing production costs, but also fails to achieve segmented and precise forging processing of drill bits, resulting in low production efficiency and difficulty in meeting the needs of modern drill bit mass production, high efficiency, and precision forging. Summary of the Invention

[0005] This invention addresses the technical problems existing in the above-mentioned drill bit manufacturing process by proposing an adaptive clamping fixture for drill bit forging. This fixture is reasonably designed, simple in structure, easy to process, and can effectively adapt to the clamping of drill bit after forging. It improves the stability and processing accuracy of forging clamping, and can feed the workpiece to achieve segmented forging, simplifying the process, reducing energy waste, improving the efficiency of drill bit forging and the quality of finished products, and fully meeting the needs of production and processing.

[0006] To achieve the above objectives, the present invention provides an adaptive clamping fixture for forging drill bits, comprising a truss, a transverse mechanism mounted on the top of the truss, a robotic arm mounted on the transverse mechanism, and a clamping assembly mounted on the movable end of the robotic arm. The clamping assembly includes a stabilizing frame designed in a U-shape, and a transversely adjustable conveying clamping mechanism mounted below the stabilizing frame. The conveying clamping mechanism also functions as an axial conveying mechanism for the workpiece. Rotary clamping mechanisms are respectively mounted on the lower front and rear sides of the middle section of the stabilizing frame. The rotary clamping mechanisms adopt a ring-shaped structure to clamp the outer periphery of the workpiece, and the upper part of the rotary clamping mechanism can move downward to press against the surface of the workpiece. The rotary clamping mechanism also has the function of driving the workpiece to rotate circumferentially. Driving mechanisms are respectively mounted on the upper sides of the stabilizing frame. The driving mechanisms are connected to the conveying clamping mechanism to provide driving force for clamping the workpiece, and the clamping actions of the driving mechanisms and the rotary clamping mechanisms are linked.

[0007] Preferably, the driving mechanism includes a recessed frame disposed above the stabilizer frame, a driving cylinder disposed on the rear side of the recessed frame, a T-shaped movable rod disposed at the output end of the driving cylinder, a sliding rod disposed inside the recessed frame, one end of the sliding rod being connected to the movable rod, and the other end being disposed through the recessed frame.

[0008] Preferably, the conveying clamping mechanism includes a recess connected to a stabilizer frame. A telescopic adjustment assembly is provided within the recess, with two sets of telescopic adjustment assemblies arranged side-by-side. Each telescopic adjustment assembly includes a slide block assembly located on the lower side of the recess. One set of slide block assemblies is equipped with a drive gear. Two sets of slide block assemblies located on either side of the drive gear are equipped with racks arranged in a mirror image and meshing with the drive gear. An adjusting wheel is provided at the end of each rack. An adjusting rod is provided on the drive gear of the telescopic adjustment assembly. A connecting plate is provided between the two adjusting rods above the two sets of telescopic adjustment assemblies. A connecting rod is provided below the connecting plate, with one end of the connecting rod connected to a moving rod.

[0009] Preferably, a transmission gear is provided above the adjusting wheel, a drive gear is provided below the stabilizer frame, and an adapter tensioning mechanism is provided on the lower side of the stabilizer frame above the telescopic adjustment assembly. The adapter tensioning mechanism includes a housing, a sliding plate is provided inside the housing, a sliding rod is provided on one side of the plate and extends through the housing, a telescopic spring is provided on the outside of the sliding rod inside the housing, a mating gear is provided at the end of the sliding plate, and a transmission chain is provided on the outside of the drive gear, the transmission gear, and the mating gear.

[0010] Preferably, the rotary clamping mechanism includes a fixed frame, a cover is provided below the fixed frame, a lifting and rotating assembly integrating lifting and rotating drive functions is provided inside the cover, an auxiliary clamping assembly is provided on the outside of the cover, the clamping end of which is an arc-shaped encircling structure adapted to the outer contour of the workpiece, and is used to press down and clamp the workpiece in conjunction with the vertical lifting of the lifting and rotating assembly, and a linkage mechanism is provided above the cover, the linkage mechanism is used to receive the driving power of the drive mechanism, and to provide lifting drive power for the lifting and rotating assembly and clamping drive force for the auxiliary clamping assembly.

[0011] Preferably, the lifting and rotating assembly includes a lifting adjustment mechanism and a rotating adjustment mechanism. The lifting adjustment mechanism includes a lifting rod extending through the cover, a lifting plate below the lifting rod, a rotating unit below the lifting plate, a sliding rack for horizontal sliding adjustment above the cover, a base below the cover, a meshing gear on the base that meshes with the sliding rack, a rotating plate that rotates synchronously with the meshing gear on the outer side of the meshing gear, a linkage rod at the end of the rotating plate, and the lower end of the linkage rod hinged to the lifting plate.

[0012] Preferably, the rotating unit includes a drive wheel located on the lower inner side of the lifting plate, a drive rod between two drive wheels on the same side, and a motor located above the lifting plate, with the drive end of the motor being connected to a drive rod.

[0013] Preferably, the rotation adjustment mechanism includes a support base with a semi-circular shape located on the outside of the cover, and a rotating frame with a "3" shape at the lower end of the support base. The inner protrusion of the rotating frame is hinged to the end of the support base. A connecting rod is rotatably arranged above the rotating frame, and one end of the connecting rod is connected to a sliding rod.

[0014] Preferably, the auxiliary clamping assembly includes a first mating wheel disposed below the rotating frame, a fixed seat disposed at the inner geometric center of the rotating frame, a rotatable and adjustable plate frame disposed on the outer side of the fixed seat, and second mating wheels disposed on both sides of the plate frame.

[0015] Preferably, the linkage mechanism includes a slide rail disposed above the cover, a slider disposed on the slide rail and connected to a sliding rack, a mounting block disposed above the slider, a rotating connecting rod disposed inside the mounting block, and one end of the rotating connecting rod being connected to the outer side of the rotating frame.

[0016] Compared with the prior art, the advantages and positive effects of the adaptive clamping fixture for drill bit forging provided by the present invention are as follows: With strong clamping adaptability, the device employs alternating clamping actions of the two-sided adjusting wheels of the conveying clamping mechanism and the three-point encircling clamping structure of the rotary clamping mechanism. This allows the equipment to automatically select different clamping methods according to different working conditions. It can tightly fit the workpiece surface and perform clamping even after the outer contour of the workpiece has been deformed during the initial forging. At the same time, it can adjust the processing position according to different processing requirements, thereby improving the stability of the workpiece during the production and processing process. In conjunction with the rotary drive process of the rotary clamping mechanism, it can meet the different processing requirements of the workpiece.

[0017] Equipped with axial feed function, the conveying and clamping mechanism has the dual functions of workpiece clamping and axial conveying. The workpiece is driven to move axially by the rotation of the adjusting wheel. The forging position can be flexibly adjusted according to the requirements of the segmented forging process. There is no need to return the entire workpiece to the furnace for re-clamping, which greatly shortens the process interval, reduces the waste of heat energy and material resources, and improves production efficiency.

[0018] It has good forging stability and adopts a full-range composite clamping structure with a rotating clamping mechanism that hugs and presses downward. The multi-point clamping force is symmetrical and balanced, which can ensure that the workpiece does not shift or jump during the forging process, resulting in high forging precision and good finished product qualification rate.

[0019] With good linkage and synchronization, a single drive cylinder simultaneously drives the conveying clamping mechanism and the rotating clamping mechanism to work together. Through the moving rod, sliding rod, and linkage mechanism, the power is distributed into multiple outputs for clamping, holding, and pressing. Each clamping action can be executed alternately to adapt to different production and processing tasks. In addition, the workpiece can be circumferentially rotated. The rotating unit uses a motor-driven wheel friction transmission to drive the workpiece to rotate circumferentially. The rotation angle is controllable and can adapt to the processing requirements of different angles in the forging process of drill bits, realizing multi-directional segmented forging. Attached Figure Description

[0020] 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 accompanying drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of an adaptive clamping fixture for forging drill bits. Figure 2 A front view of the structure of an adaptive clamping fixture for forging drill bits; Figure 3 This is a schematic diagram of the clamping assembly provided by the present invention; Figure 4 This is a side view of the structure of the clamping assembly provided by the present invention; Figure 5This is a structural side view of the clamping assembly provided by the present invention from another perspective; Figure 6 This is a schematic diagram of the rotating clamping mechanism provided by the present invention; Figure 7 This is a schematic diagram of the rotary clamping mechanism provided by the present invention from another perspective. Figure 8 This is a schematic diagram of the structure of the drive mechanism and the telescopic adjustment component provided by the present invention. Figure 9 This is a schematic diagram of the telescopic adjustment assembly provided by the present invention; Figure 10 This is a structural schematic diagram of the telescopic adjustment component provided by the present invention from another perspective. Figure 11 This is a schematic diagram of the internal structure of the telescopic adjustment component provided by the present invention; Figure 12 This is a schematic diagram of the internal structure of the adaptive tensioning mechanism provided by the present invention. In the above figures, 1. Truss; 2. Lateral movement mechanism; 3. Robotic arm; 4. Stabilizer; 5. Conveying and clamping mechanism; 51. Recess; 52. Telescopic adjustment assembly; 521. Slide block and slide bar assembly; 522. Drive gear; 523. Rack; 524. Adjusting wheel; 525. Adjusting rod; 526. Connecting plate; 527. Connecting rod; 6. Rotating clamping mechanism; 61. Fixed frame; 62. Cover; 63. Lifting and adjusting mechanism; 631. Lifting rod; 632. Lifting plate; 633. Sliding rack; 634. Stand; 635. Meshing gear; 636. Rotating plate; 637. Linkage rod; 64. Rotating adjustment mechanism; 641. Rotating unit; 6411. Drive 6412. Wheel; 6413. Drive rod; 6414. Motor; 642. Support base; 643. Rotating frame; 644. Linking rod; 65. Auxiliary clamping assembly; 651. First mating wheel; 652. Fixed base; 653. Plate frame; 654. Second mating wheel; 66. Linkage mechanism; 661. Slide rail; 662. Slider; 663. Mounting block; 664. Rotating connecting rod; 7. Drive mechanism; 71. Recessed frame; 72. Drive cylinder; 73. Moving rod; 74. Sliding rod; 8. Adaptive tensioning mechanism; 81. Housing; 82. Slide plate; 83. Slide rod; 84. Telescopic spring; 85. Mating gear; 86. Drive gear; 87. Transmission gear; 88. Transmission chain. Detailed Implementation

[0022] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0023] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways than those described herein, and therefore the invention is not limited to the specific embodiments disclosed in the following specification.

[0024] Examples, such as Figures 1-12 As shown, an adaptive clamping fixture for forging drill bits is applied to the segmented high-temperature forging process of drill bit parts used in mining and construction rock drilling. It can realize the fully automated operation of adaptive clamping, axial feed conveying, circumferential rotation adjustment, and stable clamping during the forging process of high-temperature drill bit workpieces. It effectively solves the technical problems of poor adaptability of existing clamping fixtures, inability to adapt to deformed workpieces, lack of feed function, and insufficient forging stability. It significantly improves the finished product qualification rate, production efficiency, and automation level of drill bit forging. Specifically, the whole assembly is mounted on the truss 1 and the robot arm 3 structure, which can realize the spatial transfer of drill bit workpieces, adaptive circumferential clamping, axial feed adjustment, and circumferential rotation adjustment. It adapts to the stable clamping of irregularly shaped workpieces after forging and the segmented forging feeding requirements, effectively improving the clamping reliability and production efficiency of drill bit forging.

[0025] To support the various functional mechanisms of the entire machine and provide a lateral movement base for the clamping fixture, the device is equipped with a truss 1. A transverse movement mechanism 2 is installed above the truss 1, and a robot arm 3 is installed on the transverse movement mechanism 2. A clamping component is installed at the movable end of the robot arm 3. Specifically, the truss 1 serves as the supporting base of the entire machine, providing stable installation support for the transverse movement mechanism 2. The transverse movement mechanism 2 can drive the robot arm 3 to move laterally along the truss 1, realizing the position conversion of the clamping fixture between the forging station and the loading and unloading station. The robot arm 3 is a multi-degree-of-freedom robotic arm structure, which can drive the clamping component to move flexibly in space and adjust its posture. The clamping component is located at the movable end of the robot arm 3 and can directly perform clamping, conveying, and rotating operations on the high-temperature workpiece. The entire machine adopts a composite motion structure of transverse movement of the truss 1 and multi-degree-of-freedom adjustment of the robot arm 3, which can realize the rapid transfer and precise positioning of the workpiece between various stations of the forging production line.

[0026] To achieve adaptive clamping and fixation of high-temperature forging workpieces while also providing axial conveying functionality and enabling feed adjustment for segmented forging, the clamping assembly includes a zigzag-shaped stabilizing frame 4. Below the stabilizing frame 4 is a laterally adjustable conveying clamping mechanism 5. Rotary clamping mechanisms 6 are located on the lower front and rear sides of the middle section of the stabilizing frame 4, and drive mechanisms 7 are located on the upper sides of the stabilizing frame 4. Specifically, the zigzag-shaped stabilizing frame 4, with a downward-recessed middle section and upward-extending sides, provides layered installation space for the conveying clamping mechanism 5, the rotary clamping mechanism 6, and the drive mechanism 7, resulting in a compact and rigid structure. The conveying clamping mechanism 5, located below the stabilizing frame 4, is laterally adjustable and provides both workpiece clamping and axial conveying functions, enabling both... The device clamps and fixes the workpiece, and can also drive the workpiece to move along the axial direction, realizing position adjustment for segmented forging. Two sets of rotating clamping mechanisms 6 are respectively set on the lower front and rear sides of the middle section of the stabilizer 4. They adopt a ring-shaped structure to clamp the outer periphery of the workpiece, and the upper part can move downward to press against the surface of the workpiece. At the same time, they have the function of driving the workpiece to rotate circumferentially. They can stably clamp the workpiece and drive the workpiece to rotate during the forging process, adapting to the processing requirements of different forging angles. The drive mechanism 7 is set on the upper sides of the stabilizer 4 and is connected to the conveying clamping mechanism 5 to provide clamping driving force. At the same time, it is linked with the clamping action of the rotating clamping mechanism 6, realizing that a single drive source can simultaneously drive the two sets of conveying clamping and rotating clamping mechanisms to coordinate their actions. The equipment has a simple structure and good linkage synchronization.

[0027] To drive the conveying clamping mechanism 5 and the rotary clamping mechanism 6 to operate in coordination and provide driving power for workpiece clamping, the driving mechanism 7 includes a recessed frame 71 mounted above the stabilizer 4. A driving cylinder 72 is mounted on the rear side of the recessed frame 71. A T-shaped moving rod 73 is mounted on the output end of the driving cylinder 72. A sliding rod 74 is mounted inside the recessed frame 71. One end of the sliding rod 74 is connected to the moving rod 73, and the other end passes through the recessed frame 71. Specifically, the recessed frame 71 is mounted above the stabilizer 4 to provide mounting support for the driving cylinder 72 and the sliding rod 74. The driving cylinder 72 serves as the power source for the clamping action. The T-shaped moving rod 73 at its output end can simultaneously connect to multiple sets of transmission components. When the driving cylinder 72 extends or retracts, it drives the moving rod 73 to move laterally. The moving rod 73 transmits power to the conveying clamping mechanism 5 through the connecting rod 527, driving the conveying clamping mechanism 5 to perform its actions. The clamping and releasing actions, on the other hand, drive the sliding rod 74 to slide laterally along the recess 71. The sliding rod 74 transmits power to the linkage component of the rotary clamping mechanism 6, driving the rotary clamping mechanism 6 to perform the reverse encircling clamping and downward pressing actions. That is to say, a single drive cylinder 72 simultaneously drives two sets of clamping mechanisms to operate separately. When the conveying clamping mechanism 5 performs the clamping action, it drives the rotary clamping mechanism 6 to expand outward and disengage from the workpiece. The conveying clamping mechanism 5 can not only clamp the workpiece, but also move and adjust the workpiece along its axial direction to meet different functional requirements. When the conveying clamping mechanism 5 is controlled by the drive mechanism 7 to disengage from the workpiece, the drive rotary clamping mechanism 6 can perform the clamping action on the workpiece, that is, to abut against the workpiece in an encircling manner. At the same time, it can make the workpiece rotate circumferentially to ensure the smooth progress of the forging work and improve the work process.

[0028] To clamp and fix the workpiece and achieve axial conveying of the workpiece, adapting to the feeding requirements of segmented forging, the conveying and clamping mechanism 5 includes a recessed seat 51 connected to the stabilizer 4. A telescopic adjustment assembly 52 is provided within the recessed seat 51. Two sets of telescopic adjustment assemblies 52 are arranged side-by-side. Each telescopic adjustment assembly 52 includes a slide block assembly 521 located on the lower side of the recessed seat 51. A drive gear 522 is provided on one set of slide block assemblies 521. Racks 523, arranged in a mirror image and meshing with the drive gear 522, are provided on the two sets of slide block assemblies 521 located on both sides of the drive gear 522. Adjusting wheels 524 are provided at the ends of the racks 523. The drive gear 524 of the telescopic adjustment assembly 52... An adjusting rod 525 is provided on the 22. A connecting plate 526 is provided between the two adjusting rods 525 above the two sets of telescopic adjusting components 52. A connecting rod 527 is provided below the connecting plate 526. One end of the connecting rod 527 is connected to the moving rod 73. Specifically, the recessed seat 51 is fixed below the stabilizer 4 to provide an installation base for the telescopic adjusting components 52. The two sets of telescopic adjusting components 52 are set up side by side, corresponding to the clamping positions on both sides of the workpiece. The slide block assembly 521 provides a sliding guide for the rack 523. The drive gear 522 is hinged to the adjusting rod 525 and forms a differential meshing transmission with the rack 523. When the drive cylinder 72 drives the moving rod 73 laterally... During movement, the moving rod 73 drives the connecting plate 526 to move via the connecting rod 527. The connecting plate 526 drives the adjusting rod 525 to move laterally along the recess 51. When the adjusting rod 525 moves, the driving gear 522 first moves on the slide block assembly 521. When one adjusting wheel 524 contacts the workpiece surface first, one rack 523 stops moving outward. At this time, the adjusting rod 525 continues to move, and the driving gear 522 uses the rack 523 as a limit to drive the adjusting rod 525 to deflect around the contact point, so that the rack 523 on the other side continues to extend until both adjusting wheels 524 are tightly against the workpiece surface. Through the differential transmission between the driving gear 522 and the double racks 523, The automatic compensation of radial dimension differences on both sides of the workpiece and contour deviations caused by forging deformation ensures that the adjusting wheels 524 on both sides always maintain a balanced clamping force against the workpiece surface, achieving adaptive centering and clamping for workpieces of different diameters and degrees of deformation. When axial transport of the workpiece is required, the drive gear 86 is controlled to rotate, and the drive chain 88 drives the adjusting wheel 524 to rotate. In this way, the adjusting wheel 524 can feed and transport the workpiece, completing the adjustment of the workpiece position to meet the position adjustment requirements of segmented forging. The adaptive telescopic structure of differential floating gear rack automatically balances the clamping force and has strong contour adaptability, which can effectively ensure the centering accuracy and clamping stability of the workpiece.

[0029] To transmit driving power to the adjusting wheel 524 for axial workpiece transport while ensuring the tension of the transmission chain 88, a transmission gear 87 is installed above the adjusting wheel 524, and a drive gear 86 is installed below the stabilizer 4. An adapter tensioning mechanism 8 is installed on the lower side of the stabilizer 4 above the telescopic adjustment assembly 52. ​​The adapter tensioning mechanism 8 includes a housing 81, a sliding plate 82 inside the housing 81, a sliding rod 83 on one side of the sliding plate 82 extending through the housing 81, a telescopic spring 84 outside the sliding rod 83 inside the housing 81, and a mating gear 85 at the end of the sliding plate 82. A transmission chain 88 is installed outside the drive gear 86, the transmission gear 87, and the mating gear 85. Specifically, the transmission gear 87 is coaxially connected to the adjusting wheel 524 and rotates synchronously with it. The drive gear 86 rotates after being powered by external energy, transmitting power to the transmission gear 87 via the transmission chain 88. The transmission gear 87 then drives the adjusting wheel 524 to rotate. The adjusting wheel 524, while clamping the workpiece, uses friction to drive the workpiece to move axially, thus achieving workpiece feeding and conveying. The adapter tensioning mechanism 8 is located on the lower side of the stabilizer 4 to ensure the tension of the transmission chain 88, thereby ensuring the transmission stability of the conveying clamping mechanism 5 during operation, especially the transmission stability of the transmission chain 88. The slide plate 82 inside the housing 81 can slide laterally with the slide rod 83. The telescopic spring 84 is sleeved on the outside of the slide rod 83 and abuts against one side of the slide plate 82, providing elastic thrust to the slide plate 82. The mating gear 85 at the end of the slide plate 82 always presses against the transmission chain 88 under the elastic force of the telescopic spring 84, keeping the transmission chain 88 at a suitable tension and preventing the chain from loosening or slipping. When the transmission chain 88 changes due to the clamping of the workpiece, the adapter tensioning mechanism 8 can automatically extend and retract to ensure smooth and reliable transmission. The chain drive with adaptive tensioning structure has high transmission efficiency and strong load-bearing capacity, meeting the needs of production and processing.

[0030] To ensure the stability of the workpiece during forging by providing a stable, circumferential clamping mechanism and driving its circumferential rotation, the rotary clamping mechanism 6 includes a fixed frame 61. A cover 62 is located below the fixed frame 61, housing a lifting and rotating assembly that integrates lifting and rotational functions. An auxiliary clamping assembly 65 is located on the outer side of the cover 62, with its clamping end forming an arc-shaped circumferential structure adapted to the outer contour of the workpiece. This assembly, in conjunction with the vertical lifting of the lifting and rotating assembly, presses downwards and clamps the workpiece. A linkage mechanism 66 is located above the cover 62. This linkage mechanism receives the driving power from the driving mechanism 7, provides lifting and rotating power to the lifting and rotating assembly, and provides clamping force to the auxiliary clamping assembly 65. Specifically, the fixed frame 61 is fixed below the middle section of the stable frame 4, providing mounting support for the cover 62. The cover 62 provides a closed installation and protection space for the lifting and rotating assembly. The lifting and rotating assembly integrates lifting and rotational functions. The device integrates multiple functions. The lifting function can drive the rotating unit 641 to move downwards and press against the workpiece surface, clamping and fixing the workpiece from above. The rotation function of the rotating unit 641 can drive the workpiece to rotate circumferentially, adjusting the forging angle of the workpiece. The auxiliary clamping component 65 is located on the outside of the cover 62. The clamping end has an arc-shaped encircling structure that adapts to the outer contour of the workpiece, which can encircle and clamp the workpiece from the side. Together with the downward pressing of the rotating unit 641, it forms a stable clamping in all directions, ensuring that the workpiece does not shift or jump during the forging process. The linkage mechanism 66 is located above the cover 62 and receives the driving power transmitted by the sliding rod 74 of the drive mechanism 7. On the one hand, it provides the lifting and rotating component with the driving power to realize the downward pressing action. On the other hand, it provides the clamping driving force for the auxiliary clamping component 65 to realize the encircling clamping action. The linkage mechanism 66 splits the single driving power into two outputs: lifting and clamping. The transmission is simple and the action is synchronized.

[0031] To achieve downward pressing and fixation of the workpiece and circumferential rotation drive, the lifting and rotating assembly includes a lifting adjustment mechanism 63 and a rotation adjustment mechanism 64. The lifting adjustment mechanism 63 includes a lifting rod 631 extending through the cover 62, a lifting plate 632 below the lifting rod 631, a rotating unit 641 below the lifting plate 632, a sliding rack 633 for lateral sliding adjustment above the cover 62, and a stand 634 below the cover 62, on which a meshing gear 635 is mounted. It meshes with the sliding rack 633. A rotating plate 636 that rotates synchronously with the meshing gear 635 is provided on the outer side of the meshing gear 635. A linkage rod 637 is provided at the end of the rotating plate 636. The lower end of the linkage rod 637 is hinged to the lifting plate 632. Specifically, the lifting rod 631 is installed through the cover 62 and can slide vertically along the cover 62. The lower end of the lifting rod 631 is connected to the lifting plate 632. A rotating unit 641 is provided below the lifting plate 632. When the lifting rod 631 rises and falls, it drives the lifting plate 632 and the rotating unit. 641 moves vertically synchronously; the sliding rack 633 can slide horizontally above the cover 62. When the linkage mechanism 66 drives the sliding rack 633 to move horizontally, the sliding rack 633 meshes with the meshing gear 635 on the stand 634, causing the meshing gear 635 to rotate circumferentially. The rotating plate 636 on the outer side of the meshing gear 635 rotates synchronously with the meshing gear 635. The linkage rod 637 at the end of the rotating plate 636 swings circumferentially with the rotating plate 636. The lower end of the linkage rod 637 is hinged to the lifting plate 632. The rotational swing of the rotating plate 636 is converted into the vertical lifting motion of the lifting plate 632, thereby driving the rotating unit 641 to move downward and press against the surface of the workpiece, thus achieving the upper clamping and fixing of the workpiece. The rotating unit 641 is located below the lifting plate 632 and can drive the workpiece to rotate circumferentially after the lifting plate 632 presses against the workpiece to adjust the forging angle. The lifting transmission structure with gear, rack and pinion and connecting rod is adopted to convert the lateral movement into vertical lifting. The transmission is smooth and the pressing force is large, which can ensure the reliable clamping of the workpiece during the forging process.

[0032] To drive the workpiece to rotate circumferentially and adapt to forging processing requirements at different angles, the rotating unit 641 includes a drive wheel 6411 positioned below the inner side of the lifting plate 632, a drive rod 6412 positioned between the two drive wheels 6411 on the same side, and a motor 6413 positioned above the lifting plate 632. The drive end of the motor 6413 is connected to the drive rod 6412. Specifically, the two drive wheels 6411 are positioned side by side below the lifting plate 632 and connected by the drive rod 6412. The motor 6413 is fixed above the lifting plate 632, and its drive end is connected to the drive rod 6412. When the motor 6413 runs, it drives the drive rod 6412 to rotate, and the drive rod 6412 drives the two drive wheels 6411 to rotate. The drive wheel 6411 rotates synchronously. When the lifting plate 632 moves downward and the drive wheel 6411 presses against the surface of the workpiece, the rotating drive wheel 6411 uses the friction force with the workpiece surface to drive the workpiece to rotate circumferentially, thereby adjusting the forging angle of the workpiece. The two sets of drive wheels 6411 are arranged side by side to increase the contact area with the workpiece, ensure sufficient rotational driving friction, and avoid slippage. The workpiece is driven to rotate by friction transmission of the drive wheel 6411 driven by the motor 6413. Of course, the transmission between the output end of the motor 6413 and the drive rod 6412 can be a chain drive to ensure the accuracy and reliability of the transmission of driving power. The structure is simple, the rotation angle is controllable, and it can be adapted to the processing requirements of different angles in the forging process of the drill bit.

[0033] To drive the auxiliary clamping assembly 65 to perform a circumferential clamping action, the rotary adjustment mechanism 64 includes a support base 642 with a semi-circular shape, located on the outside of the cover 62. A rotating frame 643 with a "3" shape is located at the lower end of the support base 642. The inner protrusion of the rotating frame 643 is hinged to the end of the support base 642. A connecting rod 644 is rotatably mounted on the upper part of the rotating frame 643, with one end connected to a sliding rod 74. Specifically, the support base 642 is fixed to the outside of the cover 62 in a semi-circular shape, providing hinged support for the rotating frame 643. The rotating frame 643 has a "3" shape, with its inner protrusion hinged to the end of the support base 642, allowing the rotating frame 643 to rotate around the hinge point. The swing mechanism is achieved by a linkage rod 644 rotatably positioned above the rotating frame 643, with one end connected to the sliding rod 74 of the drive mechanism 7. When the drive cylinder 72 drives the sliding rod 74 to move laterally, the sliding rod 74 pulls the rotating frame 643 to swing around the hinge point of the support base 642 via the linkage rod 644. When the rotating frame 643 swings, it drives the auxiliary clamping component 65 below to move synchronously, causing the clamping end of the auxiliary clamping component 65 to retract towards the outer periphery of the workpiece, thus achieving a circumferential clamping action. The swing structure of the semi-arc support base 642 and the 3-shaped rotating frame 643 ensures that the rotation trajectory matches the outer contour of the workpiece, guaranteeing that the arc-shaped clamping end of the auxiliary clamping component 65 is tightly attached to the surface of the workpiece, resulting in a large circumferential clamping force and good stability.

[0034] To clamp the deformed workpiece from the side and accommodate drill bit workpieces with different outer contours, the auxiliary clamping assembly 65 includes a first mating wheel 651 positioned below the rotating frame 643. A fixed seat 652 is located at the inner geometric center of the rotating frame 643, and a rotatably adjustable plate frame 653 is located on the outer side of the fixed seat 652. Second mating wheels 654 are located on both sides of the plate frame 653. Specifically, the first mating wheel 651 is positioned below the rotating frame 643 and swings synchronously with the rotating frame 643. The plate frame 653 is rotatably adjustable inside the rotating frame 643 via the fixed seat 652, and the second mating wheels 654 on both sides of the plate frame 653 can adaptively rotate and adjust their angles with the plate frame 653. When the rotating frame 643 drives the auxiliary clamping assembly 65 to retract toward the workpiece, the first mating wheel 651 and the two second mating wheels 654 simultaneously abut against the outer periphery of the workpiece from different directions, forming a three-point encircling clamping structure. The rotatable and adjustable characteristics of the plate frame 653 allow the second mating wheels 654 to adaptively conform to the outer contours of workpieces with different diameters and different degrees of deformation. Even if the outer contour of the workpiece is deformed after the initial forging, the three mating wheels can still closely conform to the surface of the workpiece, ensuring stable and reliable clamping. The clamping structure of the three-point encircling plus the adaptive plate frame 653 has strong clamping adaptability and can adapt to the different specifications and shapes of the drill bit workpieces before and after forging, solving the technical problem that traditional tooling cannot adapt to the deformed workpiece.

[0035] To receive the driving power from the drive mechanism 7 and split it into lifting and clamping outputs, the linkage mechanism 66 includes a slide rail 661 mounted above the cover 62. A slider 662 is mounted on the slide rail 661 and connected to a sliding rack 633. A mounting block 663 is mounted above the slider 662, and a rotating connecting rod 664 is mounted inside the mounting block 663. One end of the rotating connecting rod 664 is connected to the outside of the rotating frame 643. Specifically, the slide rail 661 is fixed above the cover 62, providing lateral sliding guidance for the slider 662. The slider 662 is connected to the sliding rack 633 and can move laterally synchronously with the sliding rack 633. The mounting block 663 is fixed above the slider 662, and the rotating connecting rod 664 is rotatably mounted inside the mounting block 663, with one end connected to a rotation adjustment mechanism. The rotating frame 643 of the mechanism 64 is connected to the outside. When the sliding rod 74 of the drive mechanism 7 moves laterally, on the one hand, the rotating frame 643 is directly pulled to swing through the connecting rod 644 to achieve a circumferential clamping. On the other hand, the sliding rack 633 and the slider 662 are driven to move laterally along the slide rail 661. The sliding rack 633 drives the lifting plate 632 to move downward through the meshing gear 635 to achieve pressure fixation. At the same time, the slider 662 assists in pulling the rotating frame 643 to swing through the rotating connecting rod 664 to enhance the driving force of the circumferential clamping. The linkage structure of the slide rail 661, slider 662 and rotating connecting rod 664 is adopted to synchronously split the driving power into two outputs: lifting and pressing and circumferential clamping. This ensures that the two actions are executed synchronously and cooperate to achieve stable clamping of the workpiece in all directions.

[0036] The specific workflow of this embodiment is as follows: the device operation is divided into six stages: workpiece picking, adaptive clamping, axial feeding, forging, circumferential rotation, and material unloading. The entire process can be automated and continuous.

[0037] During the workpiece handling stage, the transverse mechanism 2 drives the robot arm 3 to move to the feeding station. The robot arm 3 adjusts the posture of the clamping components so that the conveying clamping mechanism 5 under the stabilizer 4 is aligned with the high-temperature drill bit workpiece. The drive cylinder 72 is in the retracted state. The adjusting wheel 524 of the conveying clamping mechanism 5 and the auxiliary clamping component 65 of the rotary clamping mechanism 6 are both in the open state. The robot arm 3 drives the clamping components to move towards the workpiece, so that the workpiece enters the encircling range between the two sets of conveying clamping mechanisms 5 and the two sets of rotary clamping mechanisms 6 in front and behind.

[0038] During the adaptive clamping stage, the drive cylinder 72 extends, causing the moving rod 73 to move laterally. The moving rod 73 pulls the connecting plate 526 laterally via the connecting rod 527. The connecting plate 526 simultaneously drives the drive gears 522 of the two sets of telescopic adjustment components 52 to rotate synchronously via the two adjusting rods 525. The drive gears 522 mesh and drive the racks 523 on both sides to move towards each other along the slide block assembly 521. The adjusting wheel 524 retracts synchronously with the racks 523, clamping and fixing the workpiece from both sides. During this process, the rotating clamping mechanism 6 moves away from the workpiece under the action of the linkage mechanism 66. According to different usage requirements, the processing position of the workpiece can be adjusted, and the drive mechanism 7 can be controlled to run in reverse. At this time, with the help of the linkage mechanism 66, the moving rod 73 drives the sliding rod 74 to move laterally. The sliding rod 74 pulls the rotating frame 643 to swing around the hinge point of the support base 642 via the connecting rod 644. The rotating frame 643 drives the auxiliary clamping assembly 6 The first mating wheel 651 and the second mating wheel 654 of the 5 mechanism converge towards the outer periphery of the workpiece, forming a three-point encircling clamp. The plate frame 653 adaptively rotates to ensure that the second mating wheel 654 closely fits the deformed outer contour of the workpiece. Simultaneously, the sliding rod 74 drives the sliding rack 633 to move laterally along the slide rail 661. The sliding rack 633 meshes with the meshing gear 635, driving the rotating plate 636 to rotate. The rotating plate 636 drives the lifting plate 632 to move downward through the linkage rod 637, causing the drive wheel 6411 of the rotating unit 641 to press downward against the surface of the workpiece, completing the adaptive clamping and fixing of the workpiece in all directions. During this process, the conveying clamping mechanism 5 removes its clamping of the workpiece, thus ensuring the stability of the workpiece during processing. In other words, the conveying clamping mechanism 5 and the rotating clamping mechanism 6 can alternately perform clamping of the workpiece to meet different production and processing needs and improve the functionality of the equipment.

[0039] During the axial feeding stage, when the workpiece needs to be adjusted after partial forging, the drive gear 86 is connected to external power to rotate, which drives the transmission gear 87 to rotate through the transmission chain 88. The transmission gear 87 drives the adjusting wheel 524 to rotate synchronously. The adjusting wheel 524, in the clamping state, uses the friction with the workpiece surface to drive the workpiece to move axially, realizing the feeding and conveying of the workpiece, sending the unforged area into the forging station. There is no need to return the entire workpiece to the furnace for re-clamping, which is suitable for the process requirements of segmented forging. The telescopic spring 84 of the tensioning mechanism 8 pushes the gear 85 to always press against the transmission chain 88, ensuring smooth transmission and no slippage during the conveying process.

[0040] During the forging process, after the workpiece is clamped, fixed, and fed into position, the forging equipment performs forging on the exposed processing area of ​​the workpiece. The circumferential clamping and downward pressing of the rotating clamping mechanism 6 provide stable clamping support for the workpiece, ensuring that the workpiece does not shift or jump during the forging process. The adjusting wheels 524 on both sides of the conveying clamping mechanism 5 and the auxiliary clamping components 65 of the rotating clamping mechanism 6 work together to form a multi-point stable clamping, so that the workpiece can maintain a stable position even under the action of forging impact force.

[0041] During the circumferential rotation stage, when it is necessary to adjust the forging angle of the workpiece, the motor 6413 above the lifting plate 632 runs, driving the two drive wheels 6411 to rotate synchronously through the drive rod 6412. The drive wheels 6411 use the friction with the surface of the workpiece to drive the workpiece to rotate circumferentially. After adjusting to the required forging angle, the motor 6413 stops, and the workpiece is held at that angle to continue forging, realizing segmented forging processing in different directions.

[0042] During the material unloading stage, when the workpiece needs to be adjusted after forging, the mechanism is controlled again to retract the drive cylinder 72, causing the moving rod 73 to move in the opposite direction. The sliding rack 633 of the rotary clamping mechanism 6 moves in the opposite direction, causing the lifting plate 632 to rise. The drive wheel 6411 is removed from the workpiece surface. At the same time, the rotating frame 643 swings in the opposite direction, causing the auxiliary clamping assembly 65 to open and release the workpiece. At this time, the conveying clamping mechanism 5 replaces the rotary clamping mechanism 6 to complete the clamping of the workpiece. The workpiece position can be adjusted or the material can be unloaded. If it is unloading, the robot arm 3 moves the clamping assembly to the unloading station and places the forged drill bit workpiece on the unloading conveyor line. After each mechanism is reset, it is ready for the clamping and forging operation of the next workpiece.

[0043] In the above process: the clamping adaptability is strong. The clamping action is performed alternately by the two-side adjusting wheels 524 of the conveying clamping mechanism 5 and the three-point ring clamping structure of the rotary clamping mechanism 6. This allows the device to select different clamping methods according to different working conditions. It can tightly fit the workpiece surface and perform clamping even after the outer contour of the workpiece has been deformed after the initial forging. At the same time, the processing position can be adjusted according to different processing requirements, which can improve the stability of the workpiece in the production and processing process. In conjunction with the rotary drive process of the rotary clamping mechanism 6, it can meet the different processing requirements of the workpiece.

[0044] Equipped with axial feeding function, the conveying and clamping mechanism 5 has the dual functions of workpiece clamping and axial conveying. The workpiece is driven to move axially by the rotation of the adjusting wheel 524. The forging position can be flexibly adjusted according to the requirements of the segmented forging process. There is no need to return the entire workpiece to the furnace for re-clamping, which greatly shortens the process interval, reduces the waste of heat energy and material resources, and improves production efficiency.

[0045] It has good forging stability and adopts a 6-ring clamping and downward pressing all-round composite clamping structure with a rotating clamping mechanism. The multi-point clamping force is symmetrical and balanced, which can ensure that the workpiece does not shift or jump during the forging process, resulting in high forging accuracy and good finished product qualification rate.

[0046] With good linkage and synchronization, a single drive cylinder 72 simultaneously drives the conveying clamping mechanism 5 and the rotating clamping mechanism 6 to work together. Through the moving rod 73, sliding rod 74, and linkage mechanism 66, the power is divided into multiple outputs for clamping, holding, and pressing. Each clamping action can be executed alternately to adapt to different production and processing tasks. In addition, the workpiece can be circumferentially rotated. The rotating unit 641 uses a motor 6413 to drive the wheel 6411 to drive the workpiece to rotate circumferentially. The rotation angle is controllable and can adapt to the processing requirements of different angles in the forging process of the drill bit, realizing multi-directional segmented forging.

[0047] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments that can be applied to other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. An adaptive clamping fixture for forging drill bits, comprising a truss, a transverse movement mechanism disposed above the truss, and a robotic arm disposed on the transverse movement mechanism, characterized in that, The movable end of the robotic arm is equipped with a clamping assembly, which includes a stabilizing frame designed in a U-shape. Below the stabilizing frame is a laterally telescopic and adjustable conveying clamping mechanism, which also functions as an axial conveying mechanism for the workpiece. Rotary clamping mechanisms are respectively located on the lower front and rear sides of the middle section of the stabilizing frame. The rotary clamping mechanisms adopt a ring-shaped structure to clamp the outer periphery of the workpiece, and the upper part of the rotary clamping mechanism can move downward to press against the surface of the workpiece. The rotary clamping mechanism also has the function of driving the workpiece to rotate circumferentially. Drive mechanisms are respectively located on the upper sides of the stabilizing frame. The drive mechanisms are connected to the conveying clamping mechanism to provide driving force for clamping the workpiece. The clamping actions of the drive mechanisms and the rotary clamping mechanisms are linked.

2. The adaptive clamping fixture for forging drill bits according to claim 1, characterized in that, The driving mechanism includes a recessed frame mounted above the stabilizer frame. A driving cylinder is mounted on the rear side of the recessed frame. A T-shaped moving rod is mounted on the output end of the driving cylinder. A sliding rod is mounted inside the recessed frame. One end of the sliding rod is connected to the moving rod, and the other end passes through the recessed frame.

3. The adaptive clamping fixture for forging drill bits according to claim 2, characterized in that, The conveying and clamping mechanism includes a recessed seat connected to a stabilizer frame. A telescopic adjustment assembly is provided within the recessed seat. Two sets of telescopic adjustment assemblies are arranged side-by-side. Each telescopic adjustment assembly includes a slide block assembly located on the lower side of the recessed seat. One set of slide block assemblies is equipped with a drive gear. Two sets of slide block assemblies located on either side of the drive gear are equipped with racks arranged in a mirror image and meshing with the drive gear. Adjusting wheels are provided at the ends of the racks. Adjusting rods are provided on the drive gear of the telescopic adjustment assembly. A connecting plate is provided between the two adjusting rods above the two sets of telescopic adjustment assemblies. A connecting rod is located below the connecting plate, and one end of the connecting rod is connected to a moving rod.

4. The adaptive clamping fixture for forging drill bits according to claim 3, characterized in that, A transmission gear is provided above the adjusting wheel, and a drive gear is provided below the stabilizer frame. An adapter tensioning mechanism is provided on the lower side of the stabilizer frame above the telescopic adjustment assembly. The adapter tensioning mechanism includes a housing, a sliding plate is provided inside the housing, a sliding rod is provided on one side of the plate and extends through the housing, a telescopic spring is provided on the outside of the sliding rod inside the housing, a mating gear is provided at the end of the sliding plate, and a transmission chain is provided on the outside of the drive gear, the transmission gear, and the mating gear.

5. The adaptive clamping fixture for forging drill bits according to claim 1, characterized in that, The rotating clamping mechanism includes a fixed frame, with a cover below the fixed frame. Inside the cover is a lifting and rotating assembly that integrates lifting and rotating drive functions. An auxiliary clamping assembly is located on the outside of the cover, with its clamping end forming an arc-shaped encircling structure adapted to the outer contour of the workpiece. This assembly works in conjunction with the vertical lifting of the lifting and rotating assembly to press down on and clamp the workpiece. A linkage mechanism is located above the cover. This linkage mechanism receives the driving power from the drive mechanism and provides lifting drive power to the lifting and rotating assembly and clamping drive force to the auxiliary clamping assembly.

6. The adaptive clamping fixture for forging drill bits according to claim 5, characterized in that, The lifting and rotating assembly includes a lifting adjustment mechanism and a rotating adjustment mechanism. The lifting adjustment mechanism includes a lifting rod extending through the cover, a lifting plate below the lifting rod, a rotating unit below the lifting plate, a sliding rack for horizontal sliding adjustment above the cover, a base below the cover, a meshing gear on the base that meshes with the sliding rack, a rotating plate that rotates synchronously with the meshing gear on the outer side of the meshing gear, a linkage rod at the end of the rotating plate, and the lower end of the linkage rod hinged to the lifting plate.

7. The adaptive clamping fixture for forging drill bits according to claim 6, characterized in that, The rotating unit includes a drive wheel located on the lower inner side of the lifting plate, a drive rod between two drive wheels on the same side, and a motor located above the lifting plate, with the drive end of the motor being connected to a drive rod.

8. The adaptive clamping fixture for forging drill bits according to claim 7, characterized in that, The rotation adjustment mechanism includes a support base with a semi-circular shape located on the outside of the cover. The lower end of the support base is provided with a rotating frame with a "3" shape. The inner protrusion of the rotating frame is hinged to the end of the support base. A connecting rod is rotatably arranged above the rotating frame, and one end of the connecting rod is connected to a sliding rod.

9. The adaptive clamping fixture for forging drill bits according to claim 8, characterized in that, The auxiliary clamping assembly includes a first mating wheel located below the rotating frame, a fixed seat located at the inner geometric center of the rotating frame, a rotatable and adjustable plate frame located on the outer side of the fixed seat, and second mating wheels located on both sides of the plate frame.

10. The adaptive clamping fixture for forging drill bits according to claim 9, characterized in that, The linkage mechanism includes a slide rail mounted above the cover, a slider mounted on the slide rail and connected to a sliding rack, a mounting block above the slider, a rotating connecting rod inside the mounting block, and one end of the rotating connecting rod connected to the outside of the rotating frame.

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