CN114515966B - Cutting and rotary bending cooperative fatigue low-stress blanking device and method - Google Patents
Cutting and rotary bending cooperative fatigue low-stress blanking device and method Download PDFInfo
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- CN114515966B CN114515966B CN202210169650.3A CN202210169650A CN114515966B CN 114515966 B CN114515966 B CN 114515966B CN 202210169650 A CN202210169650 A CN 202210169650A CN 114515966 B CN114515966 B CN 114515966B
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Abstract
The invention provides a cutting and rotary bending cooperative fatigue low-stress blanking device and a method, and belongs to the technical field of precision forming processing.
Description
Technical Field
The invention belongs to the technical field of precision forming processing, and particularly relates to a cutting and rotary bending cooperative fatigue low-stress blanking device and method.
Background
The low-stress blanking is to apply a crack technology to the blanking of bars, firstly, a circumferential crack is artificially prefabricated on the surface of the bar, then, a certain external force is applied to the bar with the circumferential surface crack, and the crack is expanded perpendicular to an axis at a specific position by utilizing stress concentration, so that the bar is dynamically separated in a low-stress brittle fracture mode. Currently, researchers have conducted some researches on low-stress blanking technology from the aspects of stress concentration, mechanism design, fracture morphology and the like. However, key core technologies such as a material separation mechanism, an efficient precision realization method, a quality evaluation standard and the like of low-stress blanking are not broken through, and the method is necessary for accelerating the development of the equipment manufacturing industry in China and researching a novel efficient, high-quality, energy-saving and environment-friendly metal material precision forming blanking technology and a material separation mechanism.
Most of the existing low-stress blanking methods need to manufacture V-shaped grooves in advance, the process is complicated, the shearing force required by the grooves is large, the total power of equipment is large when the large-diameter bars are blanked, the requirement on the equipment is high, only the bars with specific lengths can be blanked, the difference between the cracking force required by the bars and the expansion force after cracking is large, stable transition cannot be achieved, the loading force and the crack expansion direction are not easy to control, and the problems that the blanking section quality is poor are caused.
Disclosure of Invention
The embodiment of the invention provides a cutting and rotary bending cooperative fatigue low-stress blanking device and a method, a V-shaped groove does not need to be prefabricated, the process of independent slotting is avoided, the rotation of a blanking die in the traditional method is changed into a bar rotating mode, the loading force is easier to control, the cutting and slotting are carried out on the bar under the prestress, the slotting force is reduced, the slotting is carried out synchronously with the crack expansion, the blanking efficiency is improved, meanwhile, the slotting process has a guide effect on the expansion direction of the crack, the poor section quality is avoided, in addition, the slotting can be continuously carried out in the blanking process, and the blanking can be also carried out on the bar with large diameter under the proper slotting depth.
In view of the above problems, the technical solution proposed by the present invention is:
the invention provides a cutting and rotary bending cooperative fatigue low-stress blanking device which comprises a rack, a clamping rotating mechanism, a cutting mechanism and a loading mechanism, wherein the clamping rotating mechanism, the cutting mechanism and the loading mechanism are all arranged on the rack, and the clamping rotating mechanism and the loading mechanism are respectively arranged on the left side and the right side of the cutting mechanism;
the clamping and rotating mechanism comprises a servo motor, a main shaft and a three-jaw chuck, the servo motor is fixedly mounted at the bottom of the rack, the main shaft and the three-jaw chuck are arranged at the top of the rack, and the three-jaw chuck is fixedly connected to one end of the main shaft;
the cutting mechanism comprises a tool rest, a cutting tool, a vertical sliding rail, a horizontal sliding rail and a connecting piece, the horizontal sliding rail is fixedly connected with the top of the rack, the vertical sliding rail is arranged above the horizontal sliding rail, the cutting tool is fixedly arranged on one side of the tool rest, and the tool rest is arranged on one side of the vertical sliding rail;
loading mechanism includes guide post, follow-up subassembly and loading mould, the guide post is provided with two sets ofly, and follows the center pin symmetric distribution of main shaft, the bottom of guide post with the top fixed connection of frame, the top level of guide post is provided with the connecting plate, the follow-up subassembly includes threaded rod and fly leaf, the fly leaf set up in the below of connecting plate, the threaded rod set up in the top of fly leaf, just the top of threaded rod is run through the connecting plate, the loading mould includes connector, loading frame and angle adjustment block, one side of connector with fly leaf fixed connection, the loading frame set up in the below of connector, the angle adjustment block set up in one side of loading frame, and with connector fixed connection.
As a preferred technical scheme of the invention, the output end of the servo motor is connected with a synchronous belt, the other end of the synchronous belt penetrates through the top surface of the rack and then is connected with a transmission wheel at one end of the main shaft, and the three-jaw chuck is arranged at one end of the main shaft, which is far away from the synchronous belt.
As a preferred technical solution of the present invention, a horizontal slider is disposed above the horizontal slide rail, the horizontal slider is in clearance fit with the horizontal slide rail, the connecting piece is disposed on the top of the horizontal slider, the vertical slide rail is fixedly connected to one side of the connecting piece, a vertical slider is disposed on one side of the vertical slide rail, the vertical slider is in clearance fit with the vertical slide rail, and the tool rest is fixedly mounted on one side of the vertical slider.
As a preferred technical scheme of the present invention, two sets of guide bearings are symmetrically disposed on the movable plate, central axes of the guide bearings are respectively overlapped with central axes of the guide posts, and the guide bearings are slidably connected with the guide posts.
As a preferable technical scheme of the invention, one end of the threaded rod is provided with a connecting flange which is fixedly connected with the movable plate, the other end of the threaded rod is provided with a lifter, the lifter is fixedly connected with the top of the connecting plate, and the lifter is used for controlling the threaded rod to move up and down.
As a preferred technical scheme of the present invention, the top of the loading frame is provided with a connecting groove, the connecting groove is in a U-shaped structure, the bottom of the connector is embedded inside the connecting groove, the connector is rotatably connected with the connecting groove by a bolt, one side of the connecting groove is provided with an angle pointer, and the angle pointer corresponds to a scale mark arranged on one side of the connector.
As a preferred technical scheme of the present invention, the angle adjusting block is disposed on one side of the loading frame away from the cutting mechanism, a cushion block is disposed on one side of the loading frame close to the angle adjusting block, an angle adjusting rod is disposed on one side of the cushion block, a quick release locking member is disposed after the other end of the angle adjusting rod penetrates through the angle adjusting block, and one side of the quick release locking member abuts against one side of the angle adjusting block.
As a preferable technical scheme of the invention, a follow-up bearing is arranged at the center of the loading frame, a bearing cover is arranged on one side of the follow-up bearing, and the bearing cover is fixedly connected with the loading frame.
On the other hand, the cutting and rotary bending cooperative fatigue low-stress blanking method comprises the following steps:
s1, mounting a bar stock, enabling the bar stock to be blanked to penetrate through the center of a follow-up bearing and extend into the three-jaw chuck to be clamped and fixed, starting a servo motor, outputting power to a main shaft through a synchronous belt, and driving the bar stock clamped by the three-jaw chuck to rotate by the main shaft;
s2, presetting loading force, observing and finely adjusting the matching angle of the loading frame and the connector through an angle pointer, then tightly twisting the quick-release locking part to fix the angle, then driving the threaded rod to move upwards through a lifter, and synchronously moving the movable plate upwards under the matching of the guide bearing and the guide column to drive the loading die to provide upward loading force for the bar, so that the bar is bent to generate deflection;
s3, cutting a bar stock; the cutting knife is adjusted and moved to a proper position along the directions of the vertical sliding rail and the horizontal sliding rail under the control of a hydraulic system, and extends out to cut and crack the surface of the bar, so that an annular notch is formed on the surface of the bar, cracks are formed at the bottom of the notch due to stress concentration, the extension amount of the cutting knife is controlled, and cutting processing at different depths is carried out;
and S4, adjusting the loading force, adjusting the upward moving amplitude of the loading die through a lifter, providing a proper loading force for the bar, and enabling the crack to radially expand along the bottom of the notch to finish one-time blanking.
Compared with the prior art, the invention has the beneficial effects that:
(1) The device is used for realizing a low-stress blanking method of cutting and rotary bending cooperative fatigue, two independent processes of slotting and breaking in the blanking process of the bar are avoided, and high efficiency and low energy consumption of blanking processing are realized;
(2) According to the method, the cutting and cracking are carried out after the bar is subjected to surface tension which is easy to cut, so that the cutting force can be reduced, the abrasion of a cutter is reduced, the service life is prolonged, the cutter can be replaced, the processing requirements on chamfers of different shapes of the bar can be met, the bar can be subjected to bending loading force to generate deflection in the blanking process, and a follow-up bearing is arranged on a loading die, so that the frictional abrasion of a bar contact surface is reduced;
(3) The cutting knife rest can stretch out and draw back along perpendicular slide rail, and control is fed, has enlarged the draw ratio scope of workable bar, and whole knife rest can also move about on horizontal slide rail, changes the length of unloading to enlarge unloading length range, can adjust according to the demand is nimble, does not receive the restriction in prefabricated V type groove.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
Drawings
FIG. 1 is a schematic structural diagram of a cutting and rotary bending cooperative fatigue low-stress blanking device disclosed by the invention;
FIG. 2 is a schematic structural diagram of a cutting and rotary bending cooperative fatigue low-stress blanking device according to the present invention;
FIG. 3 is a schematic view of a cutting mechanism according to the present disclosure;
FIG. 4 is a rear side schematic view of the disclosed loading mechanism;
FIG. 5 is a schematic front side view of the disclosed loading mechanism;
FIG. 6 is an enlarged view taken at A in FIG. 5;
FIG. 7 is a schematic flow chart of a cutting and rotary bending cooperative fatigue low-stress blanking method disclosed by the invention;
description of the reference numerals: 100-a frame; 200-a clamping rotation mechanism; 201-a servo motor; 202-synchronous belt; 203-a main shaft; 204-three-jaw chuck; 300-a cutting mechanism; 301-tool holder; 302-a cutting knife; 303-vertical slide rail; 3031-vertical slider; 304-horizontal slide rail; 3041-horizontal slide block; 305-a connector; 400-a loading mechanism; 401-guide post; 4011-connecting plate; 402-a follower component; 4021-threaded rod; 4022-a movable plate; 4023-a guide bearing; 4024-a connecting flange; 4025-a lift; 403-loading the mould; 4031-connecting head; 4032-load box; 40321-connecting grooves; 40322-angle pointer; 4033-cushion block; 4034-angle adjustment block; 4035-angle adjustment lever; 40351-quick release locking member; 4036-follower bearing; 40361-bearing cap.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without inventive efforts based on the embodiments of the present invention, are within the scope of protection of the present invention.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Example one
Referring to the attached drawings 1-6, the invention provides a technical scheme: a cutting and rotary bending cooperative fatigue low-stress blanking device comprises a rack 100, a clamping rotating mechanism 200, a cutting mechanism 300 and a loading mechanism 400, wherein the clamping rotating mechanism 200, the cutting mechanism 300 and the loading mechanism 400 are all installed on the rack 100, the clamping rotating mechanism 200 and the loading mechanism 400 are respectively arranged on the left side and the right side of the cutting mechanism 300, and the rack 100 provides a base support for the device;
the clamping and rotating mechanism 200 comprises a servo motor 201, a main shaft 203 and a three-jaw chuck 204, the servo motor 201 is fixedly installed at the bottom of the rack 100, the main shaft 203 and the three-jaw chuck 204 are arranged at the top of the rack 100, the three-jaw chuck 204 is fixedly connected to one end of the main shaft 203, and the servo motor 201 outputs power for the operation of the device to drive the main shaft 203 and the three-jaw chuck 204 to rotate;
the cutting mechanism 300 comprises a cutter frame 301, a cutting cutter 302, a vertical slide rail 303, a horizontal slide rail 304 and a connecting piece 305, the horizontal slide rail 304 is fixedly connected with the top of the rack 100, the vertical slide rail 303 is arranged above the horizontal slide rail 304, the cutting cutter 302 is fixedly arranged on one side of the cutter frame 301, the cutter frame 301 is arranged on one side of the vertical slide rail 303, and the cutting mechanism 300 is controlled by a hydraulic system to drive the cutting cutter 302 to move in the horizontal and vertical directions, so that the blanking range is expanded;
the loading mechanism 400 includes a guideThe device comprises a guide column 401, a follow-up assembly 402 and a loading die 403, wherein the guide column 401 is provided with two groups and symmetrically distributed along the central axis of a main shaft 203, the bottom of the guide column 401 is fixedly connected with the top of a rack 100, a connecting plate 4011 is horizontally arranged at the top of the guide column 401, the follow-up assembly 402 comprises a threaded rod 4021 and a movable plate 4022, the movable plate 4022 is arranged below the connecting plate 4011, the threaded rod 4021 is arranged above the movable plate 4022, the top of the threaded rod 4021 penetrates through the connecting plate 4011, the loading die 403 comprises a connecting head 4031, a loading frame 4032 and an angle adjusting block 4034, one side of the connecting head 4031 is fixedly connected with the movable plate 4022, the loading die 403 is connected with the guide column 401 through the follow-up assembly 402, and under the action of the follow-up assembly 402, the loading die 403 moves up and down along the direction of the guide column 401 to provide loading force for bending of a bar stock to bend the bar stock to generate bending force and generate bending deflection, and the bar stock is bent bar stock to be bent by the following die 4021 。
The embodiment of the invention is also realized by the following technical scheme.
In the embodiment of the invention, the output end of the servo motor 201 is connected with a synchronous belt 202, the other end of the synchronous belt 202 penetrates through the top surface of the frame 100 and is connected with a transmission wheel at one end of the main shaft 203, the three-jaw chuck 204 is arranged at one end of the main shaft 203 far away from the synchronous belt 202, and the synchronous belt 202 enables the power output by the servo motor 201 to be transmitted to the main shaft 203, so that the bar stock clamped by the three-jaw chuck 204 rotates synchronously.
In the embodiment of the present invention, a horizontal slider 3041 is disposed above the horizontal slide rail 304, the horizontal slider 3041 is in clearance fit with the horizontal slide rail 304, the connecting member 305 is disposed on the top of the horizontal slider 3041, the vertical slide rail 303 is fixedly connected to one side of the connecting member 305, a vertical slider 3031 is disposed on one side of the vertical slide rail 303, the vertical slider 3031 is in clearance fit with the vertical slide rail 303, the tool holder 301 is fixedly mounted on one side of the vertical slider 3031, and the cooperation between the slider and the slide rail enables the cutting tool 302 mounted on the tool holder 301 to be capable of extending and retracting in any direction, so as to control feeding, and is used for cutting and processing of bar stock blanking.
In the embodiment of the present invention, two sets of guide bearings 4023 are symmetrically disposed on the movable plate 4022, the central axes of the guide bearings 4023 are respectively overlapped with the central axes of the guide posts 401, the guide bearings 4023 are slidably connected to the guide posts 401, and the guide posts 401 provide a limiting guide for the up-and-down movement of the movable plate 4022, so that the position is changed while the consistency of the moving direction is maintained.
In the embodiment of the invention, one end of the threaded rod 4021 is provided with a connecting flange 4024, the connecting flange 4024 is fixedly connected with the movable plate 4022, the other end of the threaded rod 4021 is provided with a lifter 4025, the lifter 4025 is fixedly connected with the top of the connecting plate 4011, the lifter 4025 is used for controlling the threaded rod 4021 to move up and down, the lifter 4025 adopts a turbine screw lifter, and the lifter 4025 is matched with the threaded rod 4021 and used as a power output source for the up and down movement of the servo assembly 402.
In the embodiment of the invention, the top of the loading frame 4032 is provided with a connecting groove 40321, the connecting groove 40321 is in a U-shaped structure, the bottom of the connecting head 4031 is embedded inside the connecting groove 40321, the connecting head 4031 is in bolt rotation connection with the connecting groove 40321, one side of the connecting groove 40321 is provided with an angle pointer 40322, the angle pointer 40322 corresponds to a scale mark arranged on one side of the connecting head 4031, the connecting groove 40321 facilitates the matching between the loading frame 4032 and the connecting head 4031, and the angle of the loading frame 4032 is adjusted more conveniently and quickly through the arrangement of the angle pointer 40322.
In the embodiment of the invention, the angle adjusting block 4034 is arranged on one side of the loading frame 4032 far away from the cutting mechanism 300, a cushion block 4033 is arranged on one side of the loading frame 4032 close to the angle adjusting block 4034, the cushion block 4033 is fixedly connected with the loading frame 4032, an angle adjusting rod 4035 is arranged on one side of the cushion block 4033, a quick-release retaining member 40351 is arranged on the other end of the angle adjusting rod 4035 after penetrating through the angle adjusting block 4034, one side of the quick-release retaining member 40351 is abutted to one side of the angle adjusting block 4034, the angle adjusting block 4034 is of a right-angled trapezoid structure, one side of an inclined plane is opposite to the cushion block 4033, different included angles are formed on the loading frame 4032 through the extending length of the angle adjusting rod 4035, the quick-release retaining member 40351 is used for fixing the extending length of the angle adjusting rod 4035, the adjustment is convenient, and the locking is firm and stable.
In the embodiment of the invention, a follower bearing 4036 is arranged in the center of the loading frame 4032, a bearing cap 40361 is arranged on one side of the follower bearing 4036, the bearing cap 40361 is fixedly connected with the loading frame 4032, the follower bearing 4036 is in follow-up contact with the outer surface of the bar, the abrasion of the surface of the bar is reduced, and the bearing cap 40361 is used for fixing the follower bearing 4036 to prevent the follower bearing 4036 from being separated from the loading frame 4032.
Example two
Referring to fig. 7, another cutting and rotary bending cooperative fatigue low-stress blanking method provided in an embodiment of the present invention includes the following steps:
s1, mounting a bar stock, enabling the bar stock to be blanked to penetrate through the center of a follow-up bearing 4036, extending and inserting the bar stock into the three-jaw chuck 204 to clamp and fix, starting a servo motor 201, outputting power to a spindle 203 through a synchronous belt 202, and driving the bar stock clamped by the three-jaw chuck 204 to rotate by the spindle 203;
s2, presetting a loading force, observing and finely adjusting a matching angle between a loading frame 4032 and a connector 4031 through an angle pointer 40322, tightening a quick-release locking piece 40351 for fixing an angle, driving a threaded rod 4021 to move upwards through a lifter 4025, synchronously moving a movable plate 4022 upwards under the matching of a guide bearing 4023 and a guide column 401, driving a loading die 403 to provide an upward loading force for a bar material, and bending the bar material to generate deflection;
s3, cutting a bar stock; the cutting knife 302 is adjusted and moved to a proper position along the directions of the vertical slide rail 303 and the horizontal slide rail 304 under the control of a hydraulic system, and extends out to cut and crack the surface of the bar, so that an annular notch is formed on the surface of the bar, cracks are formed at the bottom of the notch due to stress concentration, the extension amount of the cutting knife 302 is controlled, and cutting processing at different depths is performed;
s4, adjusting the loading force, adjusting the upward moving amplitude of the loading die 403 through the lifter 4025 to provide proper loading force for the bar, enabling the crack to radially expand along the bottom of the notch, and completing one-time blanking 。
According to the cutting and rotary bending cooperative fatigue low-stress blanking method, the cutting and slotting are carried out on the bar stock under the prestress loading force, the slotting force is reduced, the slotting is carried out synchronously with the crack propagation, the problem that the crack cannot linearly propagate due to the occurrence of a crack initiation angle and a crack initiation offset distance can be solved along with the continuous feeding of the cutting knife, the crack is made to propagate along the feeding direction of the cutting knife, the blanking can be completed on the bar stock with the large diameter under the proper slotting depth, the high efficiency and the low energy consumption of the blanking process are realized by applying the method, the blanking length can be flexibly adjusted according to the requirement, the limitation of a prefabricated V-shaped groove in the traditional method is avoided, the abrasion of the cutting knife is also reduced, the cut is tidy, and the processing quality is high.
It should be noted that the specific model specifications of the servo motor 201 and the lifter 4025 need to be determined by model selection according to the actual specification of the device, and the specific model selection calculation method adopts the prior art, so detailed description is omitted.
It should be noted that the power supply and the principle of the servo motor 201 and the lifter 4025 are clear to those skilled in the art, and will not be described in detail here.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The cutting and rotary bending cooperative fatigue low-stress blanking device is characterized by comprising a rack (100), a clamping rotating mechanism (200), a cutting mechanism (300) and a loading mechanism (400), wherein the clamping rotating mechanism (200), the cutting mechanism (300) and the loading mechanism (400) are all arranged on the rack (100), and the clamping rotating mechanism (200) and the loading mechanism (400) are respectively arranged on the left side and the right side of the cutting mechanism (300);
the clamping and rotating mechanism (200) comprises a servo motor (201), a spindle (203) and a three-jaw chuck (204), the servo motor (201) is fixedly mounted at the bottom of the rack (100), the spindle (203) and the three-jaw chuck (204) are arranged at the top of the rack (100), and the three-jaw chuck (204) is fixedly connected to one end of the spindle (203);
the cutting mechanism (300) comprises a tool rest (301), a cutting tool (302), a vertical sliding rail (303), a horizontal sliding rail (304) and a connecting piece (305), the horizontal sliding rail (304) is fixedly connected with the top of the rack (100), the vertical sliding rail (303) is arranged above the horizontal sliding rail (304), the cutting tool (302) is fixedly arranged on one side of the tool rest (301), and the tool rest (301) is arranged on one side of the vertical sliding rail (303);
loading mechanism (400) includes guide post (401), follow-up subassembly (402) and loading mould (403), guide post (401) is provided with two sets ofly, and follows the center pin symmetric distribution of main shaft (203), the bottom of guide post (401) with the top fixed connection of frame (100), the top level of guide post (401) is provided with connecting plate (4011), follow-up subassembly (402) includes threaded rod (4021) and fly leaf (4022), fly leaf (4022) set up in the below of connecting plate (4011), threaded rod (4021) set up in the top of fly leaf (4022), just the top of threaded rod (4021) is run through connecting plate (4011), loading mould (403) includes connector (4031), loading frame (4032) and angle modulation piece (4034), one side of connector (4031) with connector (4022) fixed connection, loading frame (4032) set up in the below of 4031), angle modulation piece (4034) set up in loading frame (4031) and connection connector (4031) one side.
2. The cutting and rotary bending cooperative fatigue low-stress blanking device according to claim 1, wherein an output end of the servo motor (201) is connected with a synchronous belt (202), the other end of the synchronous belt (202) penetrates through the top surface of the frame (100) and is connected with a transmission wheel at one end of the main shaft (203), and the three-jaw chuck (204) is arranged at one end of the main shaft (203) far away from the synchronous belt (202).
3. The blanking device with cutting and rotary bending cooperative fatigue and low stress as claimed in claim 2, wherein a horizontal slider (3041) is arranged above the horizontal sliding rail (304), the horizontal slider (3041) is in clearance fit with the horizontal sliding rail (304), the connector (305) is arranged on top of the horizontal slider (3041), the vertical sliding rail (303) is fixedly connected to one side of the connector (305), a vertical slider (3031) is arranged on one side of the vertical sliding rail (303), the vertical slider (3031) is in clearance fit with the vertical sliding rail (303), and the tool holder (301) is fixedly mounted on one side of the vertical slider (3031).
4. A cutting and rotary bending cooperative fatigue low stress blanking device according to claim 3, wherein two sets of guide bearings (4023) are symmetrically arranged on the movable plate (4022), the central axes of the guide bearings (4023) are respectively overlapped with the central axes of the guide posts (401), and the guide bearings (4023) are slidably connected with the guide posts (401).
5. The cutting and rotary bending cooperative fatigue low stress blanking device according to claim 4, wherein one end of the threaded rod (4021) is provided with a connecting flange (4024), the connecting flange (4024) is fixedly connected with the movable plate (4022), the other end of the threaded rod (4021) is provided with a lifter (4025), the lifter (4025) is fixedly connected with the top of the connecting plate (4011), and the lifter (4025) is used for controlling the threaded rod (4021) to move up and down.
6. The cutting and rotary bending cooperative fatigue low-stress blanking device according to claim 5, wherein a connecting groove (40321) is formed in the top of the loading frame (4032), the connecting groove (40321) is of a U-shaped structure, the bottom of the connecting head (4031) is embedded in the connecting groove (40321), the connecting head (4031) is in bolt rotation connection with the connecting groove (40321), an angle pointer (40322) is arranged on one side of the connecting groove (40321), and the angle pointer (40322) corresponds to a scale mark arranged on one side of the connecting head (4031).
7. The cutting and rotary bending cooperative fatigue low-stress blanking device according to claim 6, wherein the angle adjusting block (4034) is arranged on one side, away from the cutting mechanism (300), of the loading frame (4032), a cushion block (4033) is arranged on one side, close to the angle adjusting block (4034), of the loading frame (4032), an angle adjusting rod (4035) is arranged on one side of the cushion block (4033), the other end of the angle adjusting rod (4035) penetrates through the angle adjusting block (4034), a quick-release locking member (40351) is arranged behind the angle adjusting block (4034), and one side of the quick-release locking member (40351) is abutted to one side of the angle adjusting block (4034).
8. The cutting and rotary bending cooperative fatigue low-stress blanking device according to claim 7, wherein a follow-up bearing (4036) is arranged in the center of the loading frame (4032), a bearing cover (40361) is arranged on one side of the follow-up bearing (4036), and the bearing cover (40361) is fixedly connected with the loading frame (4032).
9. A cutting and rotary bending cooperative fatigue low-stress blanking method is applied to the cutting and rotary bending cooperative fatigue low-stress blanking device disclosed by claim 8, and is characterized by comprising the following steps of:
s1, mounting a bar stock, enabling the bar stock to be blanked to penetrate through the center of a follow-up bearing (4036), extending and inserting the bar stock into the inside of a three-jaw chuck (204) to clamp and fix, starting a servo motor (201), outputting power to a main shaft (203) through a synchronous belt (202), and driving the bar stock clamped by the three-jaw chuck (204) to rotate by the main shaft (203);
s2, presetting a loading force, observing and finely adjusting a matching angle between a loading frame (4032) and a connector (4031) through an angle pointer (40322), tightening a quick-release locking piece (40351) to fix an angle, driving a threaded rod (4021) to move upwards through a lifter (4025), synchronously moving a movable plate (4022) upwards under the matching of a guide bearing (4023) and a guide column (401), and driving a loading die (403) to provide an upward loading force for a bar stock to bend the bar stock to generate deflection;
s3, cutting a bar stock; the cutting knife (302) is adjusted and moved to a proper position along the directions of the vertical slide rail (303) and the horizontal slide rail (304) under the control of a hydraulic system, and extends out to cut and crack the surface of the bar stock, so that an annular gap is formed on the surface of the bar stock, cracks are generated at the bottom of the gap due to stress concentration, the extension amount of the cutting knife (302) is controlled, and cutting processing at different depths is performed;
and S4, adjusting the loading force, adjusting the upward moving amplitude of the loading die (403) through the lifter (4025), providing a proper loading force for the bar, and radially expanding the crack along the bottom of the notch to finish one-time blanking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210169650.3A CN114515966B (en) | 2022-02-23 | 2022-02-23 | Cutting and rotary bending cooperative fatigue low-stress blanking device and method |
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| JP2015067500A (en) * | 2013-09-30 | 2015-04-13 | Hoya株式会社 | Method for producing glass substrate for magnetic disk |
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| JP2015067500A (en) * | 2013-09-30 | 2015-04-13 | Hoya株式会社 | Method for producing glass substrate for magnetic disk |
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| CN110014072A (en) * | 2019-04-18 | 2019-07-16 | 中国石油大学(华东) | A kind of radial direction breaks the low stress baiting method of disconnected high-efficiency and precision |
| CN112453577A (en) * | 2020-11-12 | 2021-03-09 | 中国石油大学(华东) | Slotting and blanking integrated radial breaking-off low-stress blanking machine |
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