Punch forming equipment for flexible part of engine

Abstract

The invention relates to the technical field of stamping equipment, in particular to stamping forming equipment for flexible parts of engines, which comprises a frame, an inner punch, an outer punch and a rotating mechanism. The vertical driving assembly drives the inner punch to move downwards, when the distance between the lower end of the inner punch and the lower end of the outer punch is within a preset range, the rotating mechanism enables the outer punch to axially move relative to the inner punch and rotate around the outer punch at the same time, cutting is conducted on the surface of a workpiece, and when the lower ends of the outer punch and the inner punch are flush, cutting is conducted on the surface of the workpiece. And the punching device and the punching device synchronously move downwards to punch the workpiece. Therefore, deformation of materials on the surface of the workpiece in the punching process is avoided, the machining quality of the workpiece is guaranteed, and meanwhile abrasion to a cutter during cutter feeding is reduced. Furthermore, by arranging a spraying mechanism and a quantifying assembly, the amount of the sprayed lubricating liquid can be matched according to the friction between the outer punch and the workpiece, it can be guaranteed that the lubricating liquid is evenly smeared on the peripheral wall of the outer punch, and abrasion to the tool during tool retracting is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of stamping equipment, and in particular to a stamping forming equipment for a flexible component of an engine. Background Art

[0002] Flexible components in the engine, such as flexible flywheels and flexible joints, play an important role in the operation of the engine. They absorb vibration, reduce noise, improve reliability and optimize engine performance by allowing a certain degree of deformation. During the production process of the flexible flywheel, punching equipment is required to punch holes to meet the requirements of installation, connection and torque transmission. These holes usually include torque converter installation holes, signal holes, etc. Their position, size and number must be determined according to the design requirements of the flywheel. Punching equipment is a stamping forming equipment that uses a mold to punch holes in raw materials under the drive of a power mechanism.

[0003] The Chinese patent document with publication number CN118204429A discloses a flexible flywheel flexible disc punching device. The invention can punch multiple torque converter mounting holes on the flexible disc at the same time through multiple sets of punches of the punching mechanism, and improves the efficiency of cleaning the residual waste chips on the flexible disc through a cleaning brush. The Chinese patent document with publication number CN217018168U discloses a gearbox flywheel punching die. The positioning and pushing cylinder can make the positioning plate of the flywheel easy to control, making the punching positioning and unloading of the flywheel simple and convenient, and effectively improving the punching efficiency of the flywheel. However, in combination with the above scheme and the existing punching machine, the tool will be worn during the process of feeding and retracting, and when the workpiece is punched, the surface of the workpiece will be deformed and dented due to the pressure of the punch, and the processing quality of the workpiece is difficult to guarantee. Summary of the invention

[0004] In view of the deficiencies of the prior art, the present invention proposes a stamping forming device for an engine flexible component, which can reduce the deformation of the workpiece surface and reduce the wear of the tool during the feed and retract processes.

[0005] The present invention provides a stamping forming device for an engine flexible component, which adopts the following technical scheme, including: A frame is provided with a horizontal stamping platform, which is used to place the workpiece; the stamping platform is provided with a workbench hole; a vertical drive assembly is installed on the frame; The inner punch is vertically movably mounted on the frame and connected to a vertical driving assembly, and the vertical driving assembly is used to drive the inner punch to move vertically; the lower end of the inner punch can be inserted into the workbench hole; The outer punch is rotatably and axially movable on the inner punch. In a natural state, the lower end of the outer punch is located below the lower end of the inner punch, and there is a preset distance between the two. The rotating mechanism is arranged between the inner punch and the outer punch. When the distance between the lower end of the inner punch and the lower end of the outer punch is within a preset range, the outer punch is rotated while moving axially relative to the inner punch, and a downward pressure is applied to the outer punch at the same time.

[0006] Optionally, the rotating mechanism includes a guide groove and a guide block; the guide groove is opened on the outer wall surface of the inner punch, and the guide groove includes a vertical groove and a spiral groove; the spiral groove is located above the vertical groove, and the two are interconnected; the guide block is fixedly connected to the inner wall of the outer punch, and the guide block is slidably installed in the guide groove.

[0007] Optionally, the lower end surface of the outer punch is a spherical surface, and the spherical surface protrudes toward the outer punch.

[0008] Optionally, the outer punch is equipped with a spraying mechanism, and the spraying mechanism is used to spray lubricating liquid onto the surface of the outer punch.

[0009] Optionally, the spraying mechanism includes an oil tank and a spray head; the oil tank is fixedly connected to the frame, the oil tank is filled with lubricating liquid, the spray head is installed on the outer punch and faces the lower end of the outer punch; the oil tank is connected to the spray head through a pipeline.

[0010] Optionally, a metering component is provided between the oil tank and the nozzle, and the metering component is used to match the amount of lubricating fluid sprayed by the nozzle according to the friction between the outer punch and the workpiece when retracting the tool. The greater the friction between the outer punch and the workpiece, the greater the amount of lubricating fluid sprayed by the nozzle.

[0011] Optionally, the dosing component includes a dosing cylinder and a piston, the dosing cylinder can be rotatably connected to the outer punch around the axis of the outer punch, the piston is fixedly connected to the inner punch, and the piston can be installed on the dosing cylinder movably up and down; the piston and the dosing cylinder define a sealed oil chamber, and the dosing cylinder is installed with a first one-way valve and a second one-way valve, the first one-way valve is for one-way oil inlet, and the second one-way valve is for one-way oil outlet; the oil tank is connected to the first one-way valve through a pipeline, and the second one-way valve is connected to the nozzle through a pipeline.

[0012] Optionally, a spring is connected between the inner punch and the outer punch.

[0013] Optionally, at least two nozzles are provided, and the plurality of nozzles are evenly distributed along the circumference of the outer punch, and the plurality of nozzles are connected to the second one-way valve through a pipeline.

[0014] Optionally, the frame includes a base and a support arm, the punching platform is horizontally fixedly connected to the base, the support arm is fixedly connected to the base, the hydraulic cylinder is installed on the support arm, and the inner punch is installed on the support arm so as to be movable up and down.

[0015] The beneficial effect of the present invention is that a stamping forming device for an engine flexible component of the present invention divides the punch into an outer punch and an inner punch, and by setting a rotating mechanism, before stamping, the outer punch first cuts an annular groove on the upper surface of the workpiece, thereby avoiding deformation of the material on the surface of the workpiece during the punching process, ensuring the processing quality of the workpiece, and reducing the wear on the tool during feed.

[0016] Furthermore, by setting up a spraying mechanism, lubricating liquid is applied to the surface of the outer punch, and by setting up a quantitative component, the amount of sprayed lubricating liquid is matched according to the size of the friction between the workpiece and the outer punch. The greater the friction, the greater the amount of lubricating liquid sprayed. At the same time, in conjunction with the spiral groove and the spring, the lubricating liquid can be applied more evenly on the outer wall of the outer punch, thereby reducing the wear on the tool during the retraction process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of a stamping and forming device for a flexible engine component of the present invention; Figure 2 A side view of a stamping and forming device for a flexible engine component according to the present invention; Figure 3 It is a front view of a stamping and forming device for a flexible engine component of the present invention; Figure 4 It is a structural view of a stamping assembly in a stamping forming device for an engine flexible component of the present invention; Figure 5 for Figure 2 Middle AA section cutaway view; Figure 6 When the guide block is at the connection between the vertical groove and the spiral groove Figure 5 The structure at C in the middle is in the enlarged view; Figure 7 For punching process Figure 5 Enlarged view of point C in the middle; Figure 8 for Figure 3 Middle BB section cutaway view; Fig. 9 When the lower ends of the outer punch and the inner punch are flush Figure 8 Enlarged view of point D in the middle; Fig.10 When retracting Figure 8 Enlarged view of point D in the middle.

[0019] In the figure: 100, frame; 110, stamping platform; 111, workbench hole; 120, hydraulic cylinder; 130, base; 140, support arm; 200, workpiece; 300, inner punch; 400, outer punch; 500, rotating mechanism; 510, guide groove; 511, vertical groove; 512, spiral groove; 520, guide block; 600, spraying mechanism; 610, oil tank; 620, nozzle; 630, quantitative component; 631, quantitative cylinder; 632, piston; 633, oil chamber; 634, first one-way valve; 635, second one-way valve; 700, spring. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0021] like Figures 1 to 10 As shown, a stamping and forming device for a flexible component of an engine provided by an embodiment of the present invention includes a frame 100, an inner punch 300, an outer punch 400 and a rotating mechanism 500; The frame 100 includes a base 130 and a support arm 140. A stamping platform 110 is horizontally mounted on the base 130. The stamping platform 110 is used to place a workpiece 200. The stamping platform 110 is provided with a workbench hole 111. The support arm 140 is fixedly connected to the base 130. A vertical driving component is mounted on the support arm 140. The vertical driving component is a hydraulic cylinder 120. The inner punch 300 is vertically movably mounted on the support arm 140 and connected to the hydraulic cylinder 120. The hydraulic cylinder 120 is used to drive the inner punch 300 to move vertically. The lower end of the inner punch 300 can be inserted into the workbench hole 111. The outer punch 400 is rotatably and axially movable on the inner punch 300. In a natural state, the lower end of the outer punch 400 is located below the lower end of the inner punch 300. The lower end surface of the outer punch 400 is a spherical surface that bulges upward.

[0022] The rotating mechanism 500 is arranged between the inner punch 300 and the outer punch 400. The rotating mechanism 500 is used to rotate the outer punch 400 while axially moving relative to the inner punch 300 when the distance between the lower end of the inner punch 300 and the lower end of the outer punch 400 is within a preset range, and at the same time apply downward pressure to the outer punch 400.

[0023] During the processing, the workpiece 200 is placed on the stamping platform 110, the lower end of the outer punch 400 is located below the lower end of the inner punch 300, and there is a preset distance between the two; the hydraulic cylinder 120 is started, and the hydraulic cylinder 120 drives the inner punch 300 to move downward, and the inner punch 300 and the outer punch 400 keep the initial state and move downward synchronously. When the lower end of the outer punch 400 contacts the workpiece 200, the outer punch 400 stops moving downward, and the hydraulic cylinder 120 drives the inner punch 300 to continue to move downward, and the distance between the lower end of the inner punch 300 and the lower end of the outer punch 400 gradually decreases. When the distance between the two is within the preset range, as shown in FIG. Figure 6 As shown, the rotating mechanism 500 causes the outer punch 400 to move axially relative to the inner punch 300 while rotating around itself. At the same time, the rotating mechanism 500 applies downward pressure to the outer punch 400, and the outer punch 400 cuts the surface of the workpiece 200. At this time, the hydraulic cylinder 120 continues to drive the inner punch 300 to move downward. When the lower ends of the outer punch 400 and the inner punch 300 are flush, the two move downward synchronously to punch the workpiece 200. Fig. 9 The status becomes Figure 7 Status shown.

[0024] The present invention divides the punch into an outer punch 400 and an inner punch 300, and by setting a rotating mechanism 500, the outer punch 400 cuts an annular groove on the upper surface of the workpiece 200 and then punches the hole, thereby avoiding deformation of the material on the surface of the workpiece 200 during the punching process, ensuring the processing quality of the workpiece 200, and reducing the wear on the tool during feed.

[0025] In a further embodiment, the rotating mechanism 500 includes a guide groove 510 and a guide block 520; the guide groove 510 is opened on the outer wall surface of the inner punch 300, and the guide groove 510 includes a vertical groove 511 and a spiral groove 512; the spiral groove 512 is located above the vertical groove 511, and the two are interconnected; the guide block 520 is fixedly connected to the inner wall of the outer punch 400, and the guide block 520 is slidably installed in the guide groove 510.

[0026] In the initial state, the guide block 520 is located in the vertical groove 511, and the hydraulic cylinder 120 is started. The hydraulic cylinder 120 drives the inner punch 300 to move downward, and the guide block 520 moves in the guide groove 510. The distance between the lower end of the inner punch 300 and the lower end of the outer punch 400 gradually decreases. When the guide block 520 moves to the position as shown in FIG. Figure 6When the vertical groove 511 and the spiral groove 512 are connected, the distance between the lower end of the inner punch 300 and the lower end of the outer punch 400 enters the preset range, the hydraulic cylinder 120 continues to drive the inner punch 300 to move downward, and the guide block 520 moves into the spiral groove 512. Thereafter, as the inner punch 300 moves, the outer punch 400 rotates relative to the inner punch 300 and applies downward pressure to the outer punch 400, so that the outer punch 400 cuts the surface of the workpiece 200. At this time, the hydraulic cylinder 120 continues to drive the inner punch 300 to move downward. When the lower ends of the outer punch 400 and the inner punch 300 are flush, as shown in FIG. Fig. 9 As shown, the two move downward synchronously to punch the workpiece 200, becoming Figure 7 Status shown.

[0027] In a further embodiment, Figure 3 , Figure 6 , Fig. 9 , Fig.10 As shown, the outer punch 400 is equipped with a spraying mechanism 600, which is used to spray lubricating liquid onto the surface of the outer punch 400. The spraying mechanism 600 includes an oil tank 610 and a spray head 620; the oil tank 610 is fixedly connected to the frame 100, and the oil tank 610 is filled with lubricating liquid. The spray head 620 is installed on the outer punch 400 and faces the lower end of the outer punch 400; the oil tank 610 is connected to the spray head 620 through a pipeline. A quantitative component 630 is provided between the oil tank 610 and the spray head 620, and the quantitative component 630 is used to match the amount of lubricating liquid sprayed by the spray head 620 according to the friction between the outer punch 400 and the workpiece 200 when the tool is retracted. The greater the friction between the outer punch 400 and the workpiece 200, the greater the amount of lubricating liquid sprayed by the spray head 620.

[0028] After punching is completed, the tool needs to be retracted, and the hydraulic cylinder 120 drives the inner punch 300 to move upward. At this time, the guide block 520 is located in the spiral groove 512, and there is friction between the outer punch 400 and the workpiece 200, so that the outer punch 400 and the inner punch 300 move axially, and the quantitative component 630 adjusts the amount of lubricating fluid entering the nozzle 620 according to the friction between the outer punch 400 and the workpiece 200; the greater the friction between the outer punch 400 and the workpiece 200, the greater the axial movement distance between the outer punch 400 and the inner punch 300, and the greater the amount of lubricating fluid entering the nozzle 620. The lubricating liquid is sprayed onto the surface of the outer punch 400 through the nozzle 620; while the outer punch 400 and the inner punch 300 move axially relative to each other, the outer punch 400 rotates with the cooperation of the guide block 520 and the guide groove 510, so that the lubricating liquid flowing onto the hole wall is evenly applied to the peripheral wall surface of the outer punch 400, reducing the friction between the outer punch 400 and the workpiece 200, and reducing the wear of the outer punch 400 when retracting the tool.

[0029] In a further embodiment, Figure 8 , Fig. 9 , Fig.10 As shown, the dosing component 630 includes a dosing cylinder 631 and a piston 632. The dosing cylinder 631 can be rotatably connected to the outer punch 400 around the axis of the outer punch 400, and the piston 632 is fixedly connected to the inner punch 300. The piston 632 is installed on the dosing cylinder 631 so as to be movable up and down. The piston 632 and the dosing cylinder 631 define a sealed oil chamber 633. The dosing cylinder 631 is installed with a first one-way valve 634 and a second one-way valve 635. The first one-way valve 634 allows oil to enter in one direction, and the second one-way valve 635 allows oil to exit in one direction. The oil tank 610 is connected to the first one-way valve 634 through a pipeline, and the second one-way valve 635 is connected to the nozzle 620 through a pipeline.

[0030] During the cutting process, the hydraulic cylinder 120 drives the inner punch 300 to move downward, the guide block 520 moves in the guide groove 510, the piston 632 moves vertically in the metering cylinder 631, the volume of the oil chamber 633 increases, and the lubricating liquid in the oil tank 610 enters the oil chamber 633 through the pipeline and the first one-way valve 634; During the process of retracting the tool, the hydraulic cylinder 120 drives the inner punch 300 to move upward. At this time, the guide block 520 is located in the spiral groove 512. The friction between the outer punch 400 and the workpiece 200 causes the outer punch 400 and the inner punch 300 to move axially. Fig.10 , the volume of the oil chamber 633 decreases, and the lubricating liquid in the oil chamber 633 enters the nozzle 620 through the second one-way valve 635 and the pipeline. When the friction between the outer punch 400 and the workpiece 200 is greater, the axial movement distance between the outer punch 400 and the inner punch 300 is greater, the volume of the oil chamber 633 is more reduced, and the amount of lubricating liquid entering the nozzle 620 from the oil chamber 633 is greater.

[0031] In a further embodiment, Figure 6 , Figure 7 , Fig. 9 , Fig.10 As shown, a spring 700 is connected between the inner punch 300 and the outer punch 400 .

[0032] During the tool retraction process, the inner punch 300 moves upward under the drive of the hydraulic cylinder 120, and the outer punch 400 moves downward relative to the inner punch 300 under the action of its own gravity and the friction between the outer punch 400 and the workpiece 200. The spring 700 is stretched and stores force. When the outer punch 400 is separated from the workpiece 200, the outer punch 400 bounces back and forth up and down under the action of the spring 700, so that the lubricating fluid flowing to the hole wall is evenly spread in the axial direction of the outer punch 400.

[0033] In a further embodiment, Figure 8 , Fig. 9 , Fig.10 As shown, at least two nozzles 620 are provided, and the plurality of nozzles 620 are evenly distributed along the circumference of the outer punch 400, and the plurality of nozzles 620 are connected to the second one-way valve 635 through a pipeline. Two nozzles 620 are provided, and by providing a plurality of nozzles 620, the spraying of the lubricating liquid is more uniform.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A stamping forming device for engine flexible parts, characterized in that: include: A frame is provided with a horizontal stamping platform, which is used to place the workpiece; the stamping platform is provided with a workbench hole; a vertical drive assembly is installed on the frame; The inner punch is vertically movably mounted on the frame and connected to a vertical driving assembly, and the vertical driving assembly is used to drive the inner punch to move vertically; the lower end of the inner punch can be inserted into the workbench hole; The outer punch is rotatably and axially movable on the inner punch. In a natural state, the lower end of the outer punch is located below the lower end of the inner punch, and there is a preset distance between the two. The rotating mechanism is arranged between the inner punch and the outer punch. When the distance between the lower end of the inner punch and the lower end of the outer punch is within a preset range, the outer punch is rotated while moving axially relative to the inner punch, and a downward pressure is applied to the outer punch at the same time.

2. The stamping and forming equipment for engine flexible parts according to claim 1, characterized in that: The rotating mechanism includes a guide groove and a guide block; the guide groove is opened on the outer wall surface of the inner punch, and the guide groove includes a vertical groove and a spiral groove; the spiral groove is located above the vertical groove, and the two are interconnected; the guide block is fixedly connected to the inner wall of the outer punch, and the guide block is slidably installed in the guide groove.

3. The stamping and forming equipment for engine flexible parts according to claim 2, characterized in that: The lower end surface of the outer punch is a spherical surface, and the spherical surface protrudes toward the outer punch.

4. The stamping and forming equipment for engine flexible parts according to claim 3, characterized in that: The outer punch is equipped with a spraying mechanism, which is used for spraying lubricating liquid onto the surface of the outer punch.

5. The stamping and forming equipment for engine flexible parts according to claim 4, characterized in that: The spraying mechanism includes an oil tank and a spray head; the oil tank is fixedly connected to the frame, the oil tank is filled with lubricating liquid, the spray head is installed on the outer punch and faces the lower end of the outer punch; the oil tank is connected to the spray head through a pipeline.

6. The stamping and forming equipment for engine flexible parts according to claim 5, characterized in that: A quantitative component is provided between the oil tank and the nozzle, and the quantitative component is used to match the amount of lubricating fluid sprayed by the nozzle according to the friction between the outer punch and the workpiece when the tool is retracted. The greater the friction between the outer punch and the workpiece, the greater the amount of lubricating fluid sprayed by the nozzle.

7. The stamping and forming equipment for engine flexible parts according to claim 5, characterized in that: The dosing assembly includes a dosing cylinder and a piston. The dosing cylinder is connected to the outer punch so as to rotate around the axis of the outer punch. The piston is fixedly connected to the inner punch. The piston is installed on the dosing cylinder so as to be movable up and down. The piston and the dosing cylinder define a sealed oil chamber. A first one-way valve and a second one-way valve are installed on the dosing cylinder. The first one-way valve allows oil to enter in one direction, while the second one-way valve allows oil to exit in one direction. The oil tank is connected to the first one-way valve through a pipeline, and the second one-way valve is connected to the nozzle through a pipeline.

8. The stamping and forming equipment for engine flexible parts according to claim 6 or 7, characterized in that: A spring is connected between the inner punch and the outer punch.

9. The stamping and forming equipment for engine flexible parts according to claim 8, characterized in that: At least two nozzles are arranged, and the plurality of nozzles are evenly distributed along the circumference of the outer punch, and the plurality of nozzles are connected to the second one-way valve through pipelines.

10. The stamping and forming equipment for engine flexible parts according to claim 1, characterized in that: The frame comprises a base and a support arm, the punching platform is fixedly connected to the base horizontally, the support arm is fixedly connected to the base, the hydraulic cylinder is installed on the support arm, and the inner punch is installed on the support arm so as to be movable up and down.

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