A high-precision welding device for cemented carbide-cbn tool body

Abstract

This invention relates to the field of welding technology, specifically to a high-precision welding equipment for cemented carbide-CBN cutter bodies, comprising a welding frame, a hopper for supplying cemented carbide cutter body stock, and a hopper for supplying CBN cutter head stock. A support rod is provided at the bottom of the hopper within the feeding port. A first clamping mechanism is provided below one hopper, and a second clamping mechanism is provided at the other end below the other hopper. The first clamping mechanism clamps the cemented carbide cutter body stock and moves it along the center of the feeding hopper, releasing the clamp after welding. The second clamping mechanism clamps the CBN cutter head stock and moves it along the center of the feeding hopper, releasing the clamp after welding. The entire process of stock clamping, feeding, and unloading can be achieved with only a single motor drive, improving the synchronization of actions and operational stability, reducing control complexity, and enhancing the equipment's reliability and production efficiency.

Description

Technical Field

[0001] This invention relates to the field of welding technology, specifically to a high-precision welding device for cemented carbide-CBN tool bodies. Background Technology

[0002] In existing welding equipment for cemented carbide cutter bodies and CBN cutter tips, the processes of clamping, feeding, and unloading of bar stock generally adopt a multi-power source independently driven structure. Each actuator is controlled separately by a motor, cylinder, or hydraulic cylinder, and the action connection relies on a complex sequential control program and linkage adjustment system. In other words, the existing welding equipment is not only complex in structure and has high control requirements, but also prone to asynchronous action or positioning errors in the multi-power coordination process, which affects the stability of equipment operation and welding efficiency. Summary of the Invention

[0003] The purpose of this invention is to overcome the above-mentioned shortcomings and provide a high-precision welding device for cemented carbide-CBN tool bodies.

[0004] To achieve the above objectives, the specific solution of the present invention is as follows: A high-precision welding device for cemented carbide-CBN cutter bodies includes a welding frame; the welding frame is provided with a feeding trough, and the top of the welding frame is provided with two hoppers at both ends of the feeding trough, one for supplying cemented carbide cutter body stock and the other for supplying CBN cutter head stock; the bottom of both hoppers is provided with a feeding port, and support rods are provided side by side inside the feeding port and below its discharge port; the welding frame is also provided with a discharge channel communicating with the feeding trough directly below the feeding trough; One end of the feeding trough is provided with a first clamping mechanism below the corresponding hopper, and the other end is provided with a second clamping mechanism below another hopper. The first clamping mechanism is used to clamp the cemented carbide cutter body bar and move it along the center of the feeding trough, and release the clamping of the cemented carbide cutter body bar after welding is completed. The second clamping mechanism is used to clamp the CBN cutter head bar and move it along the center of the feeding trough, and release the clamping of the CBN cutter head bar after welding is completed.

[0005] Furthermore, the first clamping mechanism and the second clamping mechanism have the same structure. Both include a clamping slide block that is horizontally slidably disposed in the feeding groove, a clamping slider that is vertically elastically slidably disposed in the clamping slide block, and two clamping arms that are hinged to the top of the clamping slide block and symmetrically distributed on both sides of the clamping slider. The top of the clamping slider extends out of the top of the clamping slide and is axially connected to a first clamping roller; the clamping slider is provided with a conical platform; the lower end of the clamping arm movably abuts against the inclined surface of the conical platform, and its upper end is axially connected to a second clamping roller; the first clamping roller and the two second clamping rollers are arranged in a triangle.

[0006] Furthermore, the clamping slide has a driving slider that is vertically and elastically slidable directly below the clamping slider; the clamping slide has a locking component on at least one side of the driving slider; the locking component can unlockably lock the driving slider after the driving slider moves vertically downward into position, and can release the locking of the driving slider under the drive of the clamping slide. The drive slider is provided with a guide shaft on at least one side; the feed trough is provided with a first inclined groove and a second inclined groove at both ends of at least one side of the trough wall, and the first inclined groove and the second inclined groove both extend downward from the end of the feed trough toward the center; the guide shaft of the first clamping mechanism moves through the clamping slide and then moves into cooperation with the first inclined groove, and the guide shaft of the second clamping mechanism moves through the clamping slide and then moves into cooperation with the second inclined groove.

[0007] Furthermore, a roller is axially connected to the end of the guide shaft; the roller of the first clamping mechanism is movably embedded in the first inclined groove; the roller of the second clamping mechanism is movably embedded in the second inclined groove.

[0008] Furthermore, a first spring is connected between the upper end of the clamping slider and the clamping slide block; a second spring with a stiffness greater than that of the first spring is connected between the bottom of the driving slider and the clamping slide block.

[0009] Furthermore, a motor is fixedly embedded at the bottom of the clamping slider; a screw is driven to the output end of the motor; a push rod is threaded onto the outer wall of the screw; the push rod is coaxial with the screw; the outer peripheral wall of the push rod mates with the inner wall of the clamping slider to restrict the rotational freedom of the push rod; when the motor drives the screw to rotate, the push rod can move axially to extend and retract; when the push rod extends outward, the push rod can make the clamping slider slide vertically upward against the elastic force of the first spring, and make the driving slider slide vertically downward against the elastic force of the second spring.

[0010] Furthermore, the locking assembly includes a locking slider slidably disposed within the clamping slide, a top plate slidably disposed vertically within the clamping slide, and a locking block movably disposed on the side of the locking slider facing the driving slider; a third spring is connected between the side of the locking slider facing away from the driving slider and the inner wall of the clamping slide; a wedge-shaped groove is provided on the top surface of the locking slider; the upper end of the top plate is located directly below the clamping slider; a wedge-shaped surface adapted to the wedge-shaped groove is provided on the lower end of the top plate; when the clamping slider slides vertically downward, the top plate is pressed down by the clamping slider, thereby the locking slider overcomes the elastic force of the third spring and drives the locking block away from the driving slider through the cooperation of the wedge-shaped surface and the wedge-shaped groove; The side wall of the drive slider is provided with a locking groove for cooperating with the locking block; when the locking groove and the locking block are in the same position, the locking block is movably embedded in the locking groove to lock the drive slider.

[0011] Furthermore, a fourth spring is connected between the locking block and the locking slider.

[0012] Furthermore, the clamping slide is provided with locking components on both sides of the driving slider; guide shafts are provided on both sides of the driving slider; and first and second inclined grooves are provided at both ends of the two side walls of the feeding groove.

[0013] Furthermore, both of the material hoppers have vertically sliding stops at their feed inlets; a fifth spring connects the stop to the corresponding material hopper, and the side of the stop facing the material hopper's discharge outlet has an inclined structure.

[0014] The beneficial effects of this invention are as follows: By setting up an elastic grading and transmission linkage structure, this invention enables the centering clamping, feeding movement and post-weld release actions to be completed sequentially under the same force transmission path. Only a single motor drive is needed to realize the entire process of clamping, feeding and unloading of bar stock. This not only simplifies the power system and structural composition of the equipment, but also improves the synchronization of actions and the stability of operation, which is conducive to improving welding accuracy and reducing control complexity, and is beneficial to improving the reliability and production efficiency of the equipment. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the welding equipment of the present invention; Figure 2 This is a schematic diagram of the welding equipment of the present invention with the welding robot hidden. Figure 3 This is a cross-sectional schematic diagram of the welding equipment of the present invention with the welding robot hidden. Figure 4 yes Figure 3 A magnified view of a section at point A in the middle; Figure 5 yes Figure 3 A magnified view of a section at point B in the middle; Figure 6 yes Figure 4 A magnified view of a section at point C; Figure 7 This is a cross-sectional schematic diagram of the first or second clamping mechanism of the present invention; Figure 8 This is a cross-sectional schematic diagram of the first or second clamping mechanism of the present invention after the drive slider is locked; Figure 9 yes Figure 8 A magnified view of a section at point D; Explanation of reference numerals in the attached drawings: 1. Welding frame; 11. Feed chute; 12. Discharge channel; 13. First inclined chute; 14. Second inclined chute; 2. Hopper; 21. Feed port; 22. Support rod; 23. Stop block; 231. Inclined surface structure; 24. Fifth spring; 3. First clamping mechanism; 4. Second clamping mechanism; 51. Clamping slide; 52. Clamping slider; 521. Conical platform; 522. First clamping roller; 523. First spring 53. Clamping arm; 531. Second clamping roller; 54. Drive slider; 541. Guide shaft; 542. Roller; 543. Second spring; 544. Locking groove; 551. Locking slider; 5511. Wedge groove; 552. Top plate; 5521. Wedge surface; 553. Locking block; 554. Third spring; 555. Fourth spring; 561. Motor; 562. Screw; 563. Push rod; 6. Welding robot. Detailed Implementation

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, but this is not to limit the scope of the invention to this.

[0017] like Figures 1 to 9 As shown in this embodiment, a high-precision welding equipment for cemented carbide-CBN cutting tools includes a welding frame 1 and a welding robot 6 located on the outer side of the welding frame 1. The welding frame 1 is provided with a feeding trough 11, and two hoppers 2 are provided at both ends of the feeding trough 11 on the top of the welding frame 1. One hopper is used to supply cemented carbide cutting tool stock, and the other is used to supply CBN cutting tool stock. The feeding trough 11 extends horizontally, providing a working channel for the conveying and welding of the stock. The first and second hoppers are respectively fixedly installed on the top of the welding frame 1, and are symmetrically distributed at both ends of the feeding trough 11 to realize the separate supply of cemented carbide cutting tool stock and CBN cutting tool stock. The bottom of the first and second hoppers are provided with feeding ports 21, and the discharge port 21 is located within the feeding port 21. Below the feed port 21, there are two support rods 22 arranged side by side. The support rods 22 support and limit the bar material in the hopper 2 to prevent the bar material from falling at will. Only when the clamping mechanism clamps and drives the bar material can the bar material be released from the support of the support rods 22 and move with the clamping mechanism. Through the structure of the feed port 21, the first clamping mechanism 3 and the second clamping mechanism 4 can be easily moved out or into the area below the discharge port of the first hopper and the discharge port of the second hopper to complete the clamping and picking action of the bar material. The welding frame 1 also has a feeding channel 12 connected to the feeding channel 11 directly below the feeding channel 11. The feeding channel 12 extends vertically. After welding, the cemented carbide-CBN cutter body can slide into the feeding channel 12 through the feeding channel 11 and then be moved out of the welding work area to realize the automatic feeding of the finished product.

[0018] One end of the feeding trough 11 is provided with a first clamping mechanism 3 directly below the first hopper, and the other end is provided with a second clamping mechanism 4 directly below the second hopper. The first clamping mechanism 3 is adapted to the cemented carbide cutter bar and is used to clamp the cemented carbide cutter bar and move it horizontally toward the center of the feeding trough 11. The second clamping mechanism 4 is adapted to the CBN cutter head bar and is used to clamp the CBN cutter head bar and move it horizontally toward the center of the feeding trough 11, so that the cemented carbide cutter bar and the CBN cutter head bar are precisely connected for welding. After welding is completed, the first clamping mechanism 3 and the second clamping mechanism 4 release their clamping on the corresponding bars simultaneously or sequentially, so that the welded product can smoothly enter the unloading channel 12.

[0019] Specifically, such as Figures 3 to 5 , Figure 7 and Figure 8 As shown, the first clamping mechanism 3 and the second clamping mechanism 4 have the same structure. Both include a clamping slide 51, a clamping slider 52 and two clamping arms 53. The clamping slide 51 is horizontally slidably disposed in the feeding groove 11 and can reciprocate linearly along the extension direction of the feeding groove 11, providing a basis for the movement of the entire clamping mechanism. The clamping slider 52 is vertically elastically slidably disposed inside the clamping slide 51 and can move up and down in the vertical direction. The two clamping arms 53 are hinged to the top of the clamping slide 51 and are symmetrically distributed on both sides of the clamping slider 52. The clamping arms 53 can swing around the hinge point. The top end of the clamping slider 52 extends movably through the top of the clamping slide block 51, and a first clamping roller 522 is axially connected to this end. The first clamping roller 522 can rotate around its own axis. A conical truss 521 is provided in the middle of the clamping slider 52. The inclined surface of the conical truss 521 has an outwardly expanding structure. The lower end of the clamping arm 53 movably abuts against the inclined surface of the conical truss 521. A second clamping roller 531 is axially connected to the upper end of the clamping arm 53. The second clamping roller 531 can rotate around its own axis. When rotated, the first clamping roller 522 and the two second clamping rollers 531 are arranged in a triangle. When the clamping slider 52 slides vertically upward, the inclined surface of the conical platform 521 will squeeze the lower end of the clamping arm 53, pushing the upper ends of the two clamping arms 53 closer to each other. The first clamping roller 522 and the two second clamping rollers 531 are used to achieve three-point centering clamping of the bar stock, which has good clamping stability. Moreover, the roller arrangement can reduce the wear on the surface of the bar stock during the clamping process.

[0020] It should be noted that, in order to keep the two clamping arms 53 in an initially open state, and also for the reset action of the clamping arms 53, a torsion spring (not shown in the figure) can be installed at the hinge axis position of each clamping arm 53. One end of the torsion spring is connected to the lower end of the clamping arm 53, and the other end is connected to the inner side wall of the clamping slide 51. In this way, the lower end of the clamping arm 53 always maintains the tendency to move and abut against the inclined surface of the conical platform 521 under the torque of the torsion spring. When the clamping slider 52 moves vertically upward, the lower end of the clamping arm 53 is squeezed by the conical platform 521 and overcomes the torque force of the torsion spring to open outward, thereby causing the upper end of the clamping arm 53 to move towards the center and clamp the bar. After the conical platform 521 of the clamping slider 52 releases the squeeze on the clamping arm 53, the clamping arm 53 resets under the action of the torsion spring.

[0021] Similarly, a spring (not shown in the figure) can be installed between the lower end of the clamping arm 53 and the inner wall of the clamping slide 51 on the side facing away from the other clamping arm 53. Through the elastic force of the spring, the lower end of the clamping arm 53 will always maintain the tendency to move and abut against the inclined surface of the conical platform 521. When the clamping slider 52 moves vertically upward, the lower end of the clamping arm 53 is squeezed by the conical platform 521 and overcomes the elastic force of the spring to open outward, thereby causing the upper end of the clamping arm 53 to move towards the center and clamp the bar. After the conical platform 521 of the clamping slider 52 releases the squeeze on the clamping arm 53, the clamping arm 53 returns to its original position under the action of the spring.

[0022] The high-precision welding equipment for cemented carbide-CBN tool bodies in this embodiment, further, such as Figures 4 to 9As shown, a drive slider 54 is vertically and elastically slidably disposed directly below the clamping slider 52 within the clamping slide block 51. The drive slider 54 can move up and down in the vertical direction, providing a driving basis for the action of the clamping mechanism. Locking components are provided on both sides of the drive slider 54 within the clamping slide block 51. The locking components cooperate with the drive slider 54, locking it in an unlockable manner after the drive slider 54 moves vertically to its position, ensuring the positional stability of the drive slider 54. Simultaneously, the locking components can release the lock on the drive slider 54 under the movement of the clamping slide block 51, realizing the linkage control of the unlocking action. Guide shafts are fixedly disposed on both sides of the drive slider 54. 541, the guide shaft 541 extends horizontally, and the two ends of the two sides of the feeding groove 11 are respectively provided with a first inclined groove 13 and a second inclined groove 14. The first inclined groove 13 and the second inclined groove 14 both extend downward from the end of the feeding groove 11 towards the center. The guide shaft 541 of the first clamping mechanism 3 passes through the clamping slide 51 and is in movable cooperation with the first inclined groove 13. The guide shaft 541 of the second clamping mechanism 4 passes through the clamping slide 51 and is in movable cooperation with the second inclined groove 14. When the clamping slide 51 moves along the feeding groove 11, the guide shaft 541 will slide along the extension direction of the inclined groove, thereby driving the drive slider 54 to make vertical lifting and lowering movements, realizing mechanical linkage.

[0023] The high-precision welding equipment for cemented carbide-CBN tool bodies in this embodiment, further, such as Figures 3 to 5 , Figure 7 and Figure 8 As shown, a first spring 523 is connected between the upper end of the clamping slider 52 and the clamping slide 51, and the first spring 523 provides elastic force for the reset of the clamping slider 52; a second spring 543 with a stiffness greater than that of the first spring 523 is connected between the bottom of the driving slider 54 and the clamping slide 51, and the second spring 543 provides elastic force for the reset of the driving slider 54; thus ensuring the sequential action of the clamping slider 52 and the driving slider 54 and avoiding interference between their actions.

[0024] The high-precision welding equipment for cemented carbide-CBN tool bodies in this embodiment, further, such as Figure 3 and Figure 7 As shown, a roller 542 is connected to the end of the guide shaft 541. The roller 542 can rotate around its own axis. The roller 542 of the first clamping mechanism 3 is movably embedded in the first inclined groove 13, and the roller 542 of the second clamping mechanism 4 is movably embedded in the second inclined groove 14. The sliding friction between the guide shaft 541 and the inclined groove is converted into the rolling friction of the roller 542, which effectively reduces the frictional resistance, makes the sliding of the guide shaft 541 smoother, reduces the wear of the equipment, and improves the operating stability of the equipment.

[0025] The high-precision welding equipment for cemented carbide-CBN tool bodies in this embodiment, further, such as Figure 4 , Figure 5 , Figure 7 as well as Figure 8 As shown, a motor 561 is fixedly embedded in the bottom of the clamping slider 52. The motor 561 is a servo motor 561, which can achieve precise speed and direction control. The output end of the motor 561 is connected to a screw 562 via a coupling. The screw 562 extends vertically, and a push rod 563 is threaded onto the outer wall of the screw 562. The push rod 563 is coaxial with the screw 562. The outer peripheral wall of the push rod 563 mates with the inner wall of the clamping slider 52, specifically using a square shaft and square hole mating structure to restrict the rotational freedom of the push rod 563, preventing the push rod 563 from moving with the screw 562. 62 rotate together. When the motor 561 drives the screw 562 to rotate, the push rod 563 can extend and retract along the axial direction of the screw 562. When the push rod 563 extends outward, the end of the push rod 563 will simultaneously push against the clamping slider 52 and the driving slider 54. Since the stiffness of the first spring 523 is less than that of the second spring 543, the push rod 563 first makes the clamping slider 52 slide vertically upward against the elastic force of the first spring 523. The first spring 523 is compressed, thereby making the first clamping roller 522 and the two second clamping rollers 531 clamp the bar material. After the bar stock is clamped, the push rod 563 presses down to drive the slider 54, causing the slider 54 to slide vertically downward against the elastic force of the second spring 543. The second spring 543 is compressed. During this process, with the roller 542 of the first clamping mechanism 3 cooperating with the first inclined groove 13, the first clamping mechanism 3 drives the cemented carbide bar stock to move horizontally along the trajectory of the feeding groove 11 towards the center of the feeding groove 11. Meanwhile, with the roller 542 of the second clamping mechanism 4 cooperating with the second inclined groove 14, the second clamping mechanism 4 drives the CBN cutter bar stock to move horizontally along the trajectory of the feeding groove 11 towards the center of the feeding groove 11. This causes the end of the cemented carbide bar stock to come into contact with the end of the CBN cutter bar stock. In this way, a single power source can realize the actions of bar stock clamping and welding conveying, simplifying the power structure of the equipment, improving welding accuracy, and reducing control difficulty.

[0026] The high-precision welding equipment for cemented carbide-CBN tool bodies in this embodiment, further, such as Figures 4 to 6 , Figure 8 and Figure 9As shown, the locking assembly includes a locking slider 551, a top plate 552, and a locking block 553. The locking slider 551 is horizontally slidably disposed within the clamping slide 51 and can reciprocate linearly in the horizontal direction. The top plate 552 is vertically slidably disposed within the clamping slide 51 and can move up and down in the vertical direction. The locking block 553 is movably disposed on the side of the locking slider 551 facing the driving slider 54 and can move together with the locking slider 551. A third spring 554 is connected between the side of the locking slider 551 facing away from the driving slider 54 and the inner wall of the clamping slide 51. The third spring 554 provides elastic force for the reset of the locking slider 551. A wedge-shaped groove 5511 is formed on the top surface of the locking slider 551. The inclined surface of the wedge-shaped groove 5511 has an inclined structure. The top plate 552 is vertically slidably disposed within the clamping slide 51 and the top plate 552 is vertically slidably disposed within the clamping slide 51. The upper end of 52 is located directly below the clamping slider 52 and can abut against the bottom of the clamping slider 52. The lower end of the top plate 552 is provided with a wedge-shaped surface 5521 that matches the wedge groove 5511. The wedge-shaped surface 5521 and the inclined surface of the wedge groove 5511 are closely fitted. When the clamping slider 52 slides vertically downward, the bottom of the clamping slider 52 will press down on the top plate 552, pushing the top plate 552 to slide vertically downward. The top plate 552 forms a horizontal thrust on the locking slider 551 through the cooperation of the wedge-shaped surface 5521 and the wedge groove 5511, so that the locking slider 551 overcomes the elastic force of the third spring 554 and slides away from the driving slider 54, thereby driving the locking block 553 away from the driving slider 54, realizing the unlocking of the driving slider 54.

[0027] The side wall of the drive slider 54 is provided with a locking groove 544 for cooperating with the locking block 553. The size of the locking groove 544 is adapted to the locking block 553. When the drive slider 54 moves vertically downward into place, the positions of the locking groove 544 and the locking block 553 correspond to each other. At this time, under the elastic force of the third spring 554, the locking slider 551 slides towards the drive slider 54, causing the locking block 553 to move and embed into the locking groove 544. The locking block 553 and the locking groove 544 lock the drive slider 54, restricting the vertical movement of the drive slider 54 and ensuring that the position of the drive slider 54 is fixed, thereby keeping the bar in the current welding position, so as to improve the stability and welding accuracy of the bar welding.

[0028] The high-precision welding equipment for cemented carbide-CBN tool bodies in this embodiment, further, such as Figure 6 and Figure 9 As shown, a fourth spring 555 is connected between the locking block 553 and the locking slider 551. The fourth spring 555 provides buffering and reset force for the movement of the locking block 553, avoiding wear caused by hard contact between the locking block 553 and the driving slider 54. At the same time, the fourth spring 555 can play a buffering role during the process of the locking block 553 being inserted into the locking groove 544, making the locking engagement smoother and improving the service life of the locking assembly.

[0029] The high-precision welding equipment for cemented carbide-CBN tool bodies in this embodiment, further, such as Figures 2 to 5 As shown, both the No. 1 and No. 2 material hoppers have vertically sliding stop blocks 23 at their feed inlets 21. A fifth spring 24 connects the stop block 23 to the corresponding material hopper 2, and an inclined structure 231 is provided on the side of the stop block 23 facing the discharge port of the material hopper 2. When the clamping mechanism clamps the bar and moves it out of the feed inlet 21 of the material hopper 2, the bar contacts the inclined structure 231 of the stop block 23, thereby squeezing the stop block 23 to overcome the elastic force of the fifth spring 24 and slide upward, so that the bar can move out of the feed inlet 21 smoothly. After welding, since the finished product is supported on the clamping mechanism, as the clamping mechanism enters the feed inlet 21, the finished product is blocked by the stop block 23, thus ensuring that the welded finished product can be transferred out of the welding work area through the feed trough 11 and the unloading channel 12.

[0030] To enable those skilled in the art to further understand the present invention, such as Figures 1 to 9 As shown, the specific working principle of this embodiment is as follows: Material feeding stage: Carbide cutter body stock and CBN cutter head stock are respectively filled into the No. 1 and No. 2 material bins. The stock falls from the outlet of the material bin 2 onto the support rod 22 below the outlet. The support rod 22 in the feed port 21 forms a horizontal support, so that a single stock is accurately suspended in the clamping position between the first clamping roller 522 and the two second clamping rollers 531 of the corresponding clamping mechanism. At this time, the first clamping mechanism 3 and the second clamping mechanism 4 are both in the initial position at both ends of the feed groove 11. The clamping slider 52 is in a low position under the elastic force of the first spring 523, the clamping arm 53 is in an open state, and the driving slider 54 is in a high position under the elastic force of the second spring 543. The locking component is not triggered to lock, and the roller 542 at the end of the guide shaft 541 is located at the initial end of the inclined groove.

[0031] Bar clamping stage: The servo motor 561 at the bottom of the clamping slider 52 is started. The motor 561 drives the screw 562 to rotate. Since the push rod 563 and the inner wall surface of the clamping slider 52 restrict the degree of rotational freedom, the push rod 563 extends downward along the axial direction of the screw 562. Since the stiffness of the first spring 523 is less than that of the second spring 543, the push rod 563 first pushes the clamping slider 52 to overcome the elastic force of the first spring 523 and slides vertically upward. The inclined surface of the conical platform 521 on the clamping slider 52 squeezes the lower ends of the clamping arms 53 on both sides, pushing the clamping arms 53 to swing around the hinge point, so that the second clamping rollers 531 at the upper end of the two clamping arms 53 move closer to the center, forming a triangular three-point centering clamp with the first clamping roller 522, firmly clamping the bar on the support rod 22. Under the action of the clamping force, the bar disengages from the support rod 22, completing the clamping action.

[0032] Synchronous feeding and docking stage: Push rod 563 continues to extend downwards, and after the clamping action is completed, it pushes the drive slider 54 to overcome the elastic force of the second spring 543 and slides vertically downwards; the drive slider 54 moves downwards, causing the guide shafts 541 on both sides to move synchronously, and the roller 542 at the end of the guide shaft 541 slides obliquely along the first inclined groove 13 or the second inclined groove 14 of the feeding groove 11, thereby causing the clamping slide 51 of the first clamping mechanism 3 or the second clamping mechanism 4 to slide horizontally along the feeding groove 11 towards the center, thereby driving the rod The material is moved out of the feeding port 21 of the hopper 2. During this process, the bar stock cooperates with the inclined structure 231 of the stop block 23, so that the stop block 23 compresses the fifth spring 24 to avoid it. After the bar stock is completely moved out of the feeding port 21, the stop block 23 resets under the elastic force of the fifth spring 24. In this way, the two clamping mechanisms move, so that the ends of the cemented carbide cutter body bar stock and the CBN cutter head bar stock are precisely attached and connected, which prepares for the welding operation and realizes the single power source linkage of clamping and feeding. At the same time, the next bar stock falls onto the support rod 22.

[0033] Locking and Welding Operation: When the drive slider 54 moves vertically downward to the preset position, the locking groove 544 on its side wall corresponds precisely to the locking block 553 of the locking assembly. Under the reset force of the third spring 554, the locking slider 551 slides towards the drive slider 54, causing the locking block 553 to embed into the locking groove 544, thus locking the drive slider 54 and restricting its vertical movement. This ensures that the two bars maintain a precise position after docking, preventing displacement deviation during welding. At this time, the welding robot 6 starts and performs welding operations at the docking point of the bars. The locking state provides a stable positioning basis for welding.

[0034] Unlocking and Release: After the welding operation is completed, the servo motor 561 rotates in the reverse direction, driving the screw 562 to rotate in the reverse direction, causing the push rod 563 to retract axially upwards. The pushing force of the push rod 563 on the clamping slider 52 and the driving slider 54 is released. Under the return force of the first spring 523, the clamping slider 52 slides vertically downwards. The downward movement of the clamping slider 52 eliminates the squeezing force on the inclined surface of the conical platform 521. The clamping arm 53 returns to its original position and opens under the elastic action. The first clamping roller 522 and the second clamping roller 531 release their grip on the welded product. The finished product is movably supported on the two clamping mechanisms under the action of gravity. This allows the finished product to be unloaded under its own weight. Meanwhile, since the drive slider 54 is in a locked state, the second spring 543 remains compressed. As the clamping slider 52 resets, its bottom contacts the top surface of the top plate 552. The clamping slider 52 then presses down on the top plate 552 of the locking assembly. The top plate 552 slides downward and engages with the wedge groove 5511 of the locking slider 551 through the wedge surface 5521. This pushes the locking slider 551 to overcome the elastic force of the third spring 554 and slide away from the drive slider 54, causing the locking block 553 to disengage from the locking groove 544, thereby unlocking the drive slider 54.

[0035] Reset and unloading, and cyclic operation: After the locking block 553 releases the lock on the drive slider 54, the drive slider 54 slides vertically upward under the reset force of the second spring 543, driving the roller 542 at the end of the guide shaft 541 to slide in the opposite direction along the inclined groove, thereby driving the clamping slide 51 of the first clamping mechanism 3 and the second clamping mechanism 4 to retract along the feeding groove 11 to the initial positions at both ends. At this time, the first clamping mechanism 3 and the second clamping mechanism 4 gradually release the support of the finished product. At the same time, the finished product is blocked by the stop block 23 and cannot enter the feeding port 21 of the hopper 2 with the clamping mechanism, so that the finished product falls along the feeding groove 11 under its own weight and slides out of the welding work area through the unloading channel 12 directly below the feeding groove 11, realizing automatic unloading. After the clamping slide 51 returns to the initial loading position below the hopper 2, the equipment returns to the initial loading state and can start the next welding operation, realizing continuous cyclic operation.

[0036] The above description is only a preferred embodiment of the present invention. Therefore, any equivalent changes or modifications made to the structure, features and principles described in the claims of this patent application are included within the protection scope of this patent application.

Claims

1. A high-precision welding apparatus for cemented carbide-CBN tool bodies, characterized by, The welding frame includes a feeding trough. Two hoppers are located at the top of the welding frame at both ends of the feeding trough: one for supplying cemented carbide cutter body stock and the other for supplying CBN cutter head stock. Feed ports are located at the bottom of both hoppers, and support rods are arranged side-by-side inside the feed ports and below their outlet positions. A discharge channel communicating with the feeding trough is also located directly below the feeding trough on the welding frame. One end of the feeding chute is provided with a first clamping mechanism below the corresponding hopper, and the other end is provided with a second clamping mechanism below another hopper; the first clamping mechanism is used to clamp the cemented carbide cutter body bar and move it along the center of the feeding chute, and release the clamping of the cemented carbide cutter body bar after welding is completed; the second clamping mechanism is used to clamp the CBN cutter head bar and move it along the center of the feeding chute, and release the clamping of the CBN cutter head bar after welding is completed. The first clamping mechanism and the second clamping mechanism have the same structure. Both include a clamping slide block that is horizontally slidably disposed in the feeding groove, a clamping slider that is vertically elastically slidably disposed in the clamping slide block, and two clamping arms that are hinged to the top of the clamping slide block and symmetrically distributed on both sides of the clamping slider. The top of the clamping slider extends out of the top of the clamping slide and is axially connected to the first clamping roller; the clamping slider is provided with a conical platform; the lower end of the clamping arm movably abuts against the inclined surface of the conical platform, and the upper end of the arm is axially connected to the second clamping roller; the first clamping roller and the two second clamping rollers are arranged in a triangle. The clamping slide has a drive slider that is vertically and elastically slidable directly below the clamping slider; the clamping slide has a locking component on at least one side of the drive slider; the locking component can lock the drive slider unlockably after the drive slider moves vertically downward into place, and can release the lock on the drive slider under the drive of the clamping slide. The drive slider is provided with a guide shaft on at least one side; the feed trough is provided with a first inclined groove and a second inclined groove at both ends of at least one side wall, and the first inclined groove and the second inclined groove both extend downward from the end of the feed trough toward the center; the guide shaft of the first clamping mechanism moves through the clamping slide and then moves into cooperation with the first inclined groove, and the guide shaft of the second clamping mechanism moves through the clamping slide and then moves into cooperation with the second inclined groove. A first spring is connected between the upper end of the clamping slider and the clamping slide block; a second spring with a stiffness greater than that of the first spring is connected between the bottom of the driving slider and the clamping slide block. A motor is fixedly embedded in the bottom of the clamping slider; a screw is driven to the output end of the motor; a push rod is threaded on the outer wall of the screw; the push rod is coaxial with the screw; the outer peripheral wall of the push rod matches the inner wall of the clamping slider to restrict the rotational freedom of the push rod; when the motor drives the screw to rotate, the push rod can move axially; when the push rod extends outward, the push rod can make the clamping slider slide vertically upward against the elastic force of the first spring, and make the driving slider slide vertically downward against the elastic force of the second spring. The locking assembly includes a locking slider slidably disposed within a clamping slide, a top plate slidably disposed vertically within the clamping slide, and a locking block movably disposed on the side of the locking slider facing the driving slider; a third spring is connected between the side of the locking slider facing away from the driving slider and the inner wall of the clamping slide; a wedge-shaped groove is provided on the top surface of the locking slider; the upper end of the top plate is located directly below the clamping slider; a wedge-shaped surface adapted to the wedge-shaped groove is provided on the lower end of the top plate; when the clamping slider slides vertically downward, the top plate is subjected to the downward pressure of the clamping slider, thereby causing the locking slider to overcome the elastic force of the third spring and drive the locking block away from the driving slider through the cooperation of the wedge-shaped surface and the wedge-shaped groove; The side wall of the drive slider is provided with a locking groove for cooperating with the locking block; when the locking groove and the locking block are in the same position, the locking block is movably embedded in the locking groove to lock the drive slider.

2. The cemented carbide - CBN tool body high precision welding apparatus according to claim 1, characterized in that, The end of the guide shaft is connected to a roller; the roller of the first clamping mechanism is movably embedded in the first inclined groove; the roller of the second clamping mechanism is movably embedded in the second inclined groove.

3. The cemented carbide - CBN tool body high precision welding apparatus according to claim 1, characterized in that, A fourth spring connects the locking block and the locking slider.

4. The cemented carbide - CBN tool body high precision welding apparatus according to claim 1, characterized in that, The clamping slide is provided with locking components on both sides of the drive slider; guide shafts are provided on both sides of the drive slider; and first and second inclined grooves are provided at both ends of the two side walls of the feeding groove.

5. The high-precision welding equipment for cemented carbide-CBN tool bodies according to claim 1, characterized in that, Both of the material hoppers have vertically sliding blocks at their feed inlets; a fifth spring connects the block to the corresponding material hopper, and the side of the block facing the material hopper's discharge outlet has an inclined structure.

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