A progressive stamping device and method of U-shaped bolt with adaptive positioning function

Abstract

The application discloses a U-shaped bolt progressive stamping device with self-adaptive positioning function and relates to the technical field of stamping equipment. The stamping device comprises a stamping bed body, an adjusting part with adjusting function is fixedly installed on the top of the stamping bed body through bolts, the adjusting part is specifically composed of a linear motor guide rail assembly and a base plate, and a turnover table is rotatably installed on the top of the base plate. The traditional rigid positioning is upgraded to dynamic self-adaptive intelligent positioning. Through the fusion of visual scanning and micro-contact sensing data, a driving execution mechanism is used to actively correct and progressively close-loop fine-tune the U-shaped bolt, so that the shape and position deviation of raw materials are eliminated from the root, a full-data closed-loop automatic process from data sensing to data correction and then to adjustment of accurate positioning and finally stamping is realized, the precision, consistency and intelligent level of the machining of complex curved workpieces are remarkably improved, and the application is a landmark progress in the field of stamping forming.

Description

Technical Field

[0001] This invention relates to the field of stamping equipment technology, specifically to a U-bolt progressive stamping device and method with adaptive positioning function. Background Technology

[0002] In existing technologies, the stamping of U-bolts mainly relies on rigid mechanical fixtures for positioning. This method lacks adaptability to the dimensional tolerances, pre-bending shape fluctuations, and placement deviations of the workpiece itself, which easily leads to poor product consistency and low pass rate after stamping. At the same time, traditional equipment generally lacks online contour detection and real-time compensation capabilities, relying on manual experience for adjustment, resulting in low automation. Furthermore, when multi-angle progressive stamping is required, the coordination between stations is insufficient and the cumulative error is large, making it difficult to meet the production requirements of modern intelligent manufacturing for high precision, high stability, and full-process automation. Summary of the Invention

[0003] Therefore, in order to overcome the above-mentioned shortcomings, the present invention provides a U-bolt progressive stamping device and method with adaptive positioning function.

[0004] This invention is implemented as follows: a U-shaped bolt progressive stamping device and method with adaptive positioning function is constructed. The device includes a stamping press body; an adjusting component with an adjusting function is fixedly installed on the top of the stamping press body by bolts; the adjusting component is specifically composed of a linear motor guide rail assembly and a base plate, and a tilting table is rotatably installed on the top of the base plate; a positioning component is fixedly installed in the groove on the top side of the tilting table, and the top of the tilting table is also provided with a clamping plate with a clamping function and a coil plate for electromagnetic drive.

[0005] Preferably, the positioning assembly includes a fixed housing fixedly installed in the groove on the top side of the tilting table; ear plates are provided at both the upper and lower ends of the side of the fixed housing, and a drive motor with a driving function is fixedly installed on the top ear plate of the side of the fixed housing; a segmented rod with an adjustment function is welded and fixed to the end of the drive motor transmission shaft; one side of the threaded end of the segmented rod is threadedly driven by the inner thread of the electromagnetic sleeve, and the electromagnetic sleeve is specifically composed of a sleeve and a coil collar provided on the outside of the sleeve; the electromagnetic sleeve is respectively provided inside the ear plates at the top of the side of the fixed housing and the opening and closing housing; a positioning rod with a limiting function is slidably provided inside the ear plates at the bottom of the side of the fixed housing and the opening and closing housing; a magnetic semi-ring structure at a 180-degree angle is provided on the inner bottom side of the fixed housing and the opening and closing housing, and a rotating cylinder assembly is rotatably provided on the outer side of the magnetic semi-ring structure; a single controller is fixedly installed on the side of the fixed housing and the opening and closing housing by bolts, and the single controller is connected to the rotating cylinder assembly by a cable.

[0006] Preferably, the rotating cylinder assembly includes a magnetic semi-ring structure rotatably disposed on the fixed housing and the opening / closing housing, the magnetic semi-ring structure being magnetically attracted to the first-stage combined cylinder; a servo motor with driving function is fixedly mounted on the side of the first-stage combined cylinder by bolts, and a gear is inserted and fixedly fixed at the end of the servo motor drive shaft; the side of the gear meshes with a supporting gear ring, and the supporting gear ring is rotatably disposed in a groove inside the first-stage combined cylinder; the supporting gear ring is fixedly mounted on the middle of the side of the second-stage combined cylinder, and a pressure cylinder with adjusting function is fixedly mounted on the side of the second-stage combined cylinder, and a detection cylinder assembly is fixedly mounted at the end of the piston rod of the pressure cylinder; a photoelectric sensor for positioning is also provided between the first-stage and second-stage combined cylinders.

[0007] Preferably, the detection cylinder assembly includes an arc-shaped plate fixedly installed at the end of the piston rod of the pressure cylinder; a light-transmitting plate is inserted and fixedly connected to the inner arc surface of the arc-shaped plate, and an array of pressure detection components are embedded in the light-transmitting plate; eight sets of vision element arrays with an included angle of 40 degrees are fixedly installed inside the arc-shaped plate, and the vision element array is specifically an industrial camera.

[0008] Preferably, the pressure detection component includes a housing, which is fixed to the light-transmitting plate, and a photosensitive plate is fixed to the rear end of the housing; a sliding plate is slidably disposed inside the housing, and a light source matrix is ​​fixedly installed on the rear side of the sliding plate by bolts; a permanent magnet bracket with a supporting function is slidably disposed at the front end of the sliding plate, and a semi-circular arc plate is disposed on the front side of the permanent magnet bracket; a ball bearing is rotatably installed inside the arc plate of the permanent magnet bracket, and a reset component is disposed between the permanent magnet bracket and the sliding plate.

[0009] Preferably, the flipping table is rotatably mounted on the base plate via a rotating shaft. The base plate is provided with a reset structure and a sensor that drive the rotating shaft to rotate. The sensor is communicatively connected to the unit controller and is used to detect and adjust the processing angle of the U-bolt.

[0010] A method for using a U-bolt progressive stamping device and method with adaptive positioning function includes the following steps:

[0011] Step 1, Loading and Fixing: Place the U-bolt raw material on the tilting table, and complete the initial fixing by controlling the opening and closing of the clamping plate and positioning component on the tilting table;

[0012] Step 2, Data Acquisition and Processing: The changes in light signals are acquired through the visual array set by the positioning component, the micro-contact pressure is sensed through the pressure detection components distributed in the array, complete shape and pressure distribution information is obtained, and the data is processed by the individual controller.

[0013] Step 3, Progressive Active Correction and Stamping: Based on the deviation data, the raw material is actively pressed down and fine-tuned by the clamping mechanism on the flipping table to correct the macroscopic curvature deviation; then the stamping press body and positioning components are controlled to repeatedly perform fitting and detection cycles to perform progressive closed-loop fine-tuning. The flipping table and the stamping press body cooperate to perform the final stamping forming of the bent part of the U-bolt.

[0014] The present invention has the following advantages: The present invention provides an improved U-bolt progressive stamping device and method with adaptive positioning function, which, compared with similar equipment, has the following improvements:

[0015] The U-bolt progressive stamping device and method with adaptive positioning function described in this invention upgrades traditional rigid positioning to dynamic adaptive intelligent positioning: by fusing data from visual scanning and micro-contact sensing, the actuator is driven to actively correct and progressively close-loop fine-tune the U-bolt, eliminating the shape and position deviation of the raw material from the root. It realizes a fully automated data closed-loop process from data sensing to data correction, then to precise positioning and finally stamping, which significantly improves the accuracy, consistency and intelligence level of complex curved workpiece processing, and is a landmark advancement in the field of stamping forming. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention;

[0017] Figure 2 This is a schematic diagram of the isometric structure of the positioning component of the present invention;

[0018] Figure 3 This is an exploded view of the positioning component of the present invention;

[0019] Figure 4 This is an exploded structural diagram of the rotating cylinder assembly of the present invention;

[0020] Figure 5 This is a cross-sectional view of the detection cylinder assembly of the present invention;

[0021] Figure 6 This is a cross-sectional structural diagram of the pressure detection component of the present invention.

[0022] The components include: press body-1, adjusting component-2, tilting table-3, positioning assembly-4, fixed housing-41, drive motor-42, segmenting rod-43, electromagnetic screw sleeve-44, opening and closing housing-45, positioning rod-46, rotating cylinder assembly-47, single unit controller-48, first-stage combined cylinder-471, servo motor-472, gear-473, support gear ring-474, second-stage combined cylinder-475, pressure cylinder-476, detection cylinder assembly-477, arc plate-4771, light-transmitting plate-4772, pressure detection assembly-4773, vision component array-4774, photosensitive plate-47731, light source matrix-47732, sliding plate-47733, permanent magnet bracket-47734, ball bearing-47735, and reset component-47736. Detailed Implementation

[0023] The following is in conjunction with the appendix Figures 1-6 The principles and features of the present invention are described below. The examples given are for illustrative purposes only and are not intended to limit the scope of the invention. The invention is described more specifically in the following paragraphs by way of example with reference to the accompanying drawings. It should be noted that the drawings are in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the invention.

[0024] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. The embodiments of this invention will now be described according to its overall structure. Example 1:

[0026] Please see Figures 1-6The present invention discloses a U-shaped bolt progressive stamping device and method with adaptive positioning function, comprising a stamping press body 1; an adjusting member 2 with an adjusting function is fixedly installed on the top of the stamping press body 1 by bolts; the adjusting member 2 is specifically composed of a linear motor guide rail assembly and a base plate, and a flipping table 3 is rotatably installed on the top of the base plate; a positioning component 4 is fixedly installed in the groove on the top side of the flipping table 3, and a clamping plate with a clamping function and a coil plate for electromagnetic drive are also provided on the top of the flipping table 3.

[0027] The positioning component 4 includes a fixed housing 41 fixedly installed in the groove on the top side of the tilting table 3; the fixed housing 41 has ear plates at both the upper and lower ends of its side, and a drive motor 42 with a driving function is fixedly installed on the top ear plate of the side of the fixed housing 41; a segmented rod 43 with an adjusting function is welded and fixed to the end of the drive shaft of the drive motor 42; one side of the threaded end of the segmented rod 43 is threaded with the inner thread of the electromagnetic screw sleeve 44, and the electromagnetic screw sleeve 44 is specifically composed of a screw sleeve and a coil collar set on the outside of the screw sleeve; the electromagnetic screw sleeve 44 is respectively set with Inside the ear plates at the top of the sides of the fixed housing 41 and the opening / closing housing 45; inside the ear plates at the bottom of the sides of the fixed housing 41 and the opening / closing housing 45, a positioning rod 46 with a limiting function is slidably provided; a magnetic semi-ring structure at a 180-degree angle is provided on the inner bottom side of both the fixed housing 41 and the opening / closing housing 45, and a rotating cylinder assembly 47 is rotatably provided on the outer side of the magnetic semi-ring structure; a single controller 48 is fixedly installed on the sides of the fixed housing 41 and the opening / closing housing 45 by bolts, and the single controller 48 is connected to the rotating cylinder assembly 47 by a cable.

[0028] The rotating cylinder assembly 47 includes a magnetic semi-ring structure rotatably disposed in the fixed housing 41 and the opening and closing housing 45, and the magnetic semi-ring structure is magnetically attracted to the primary combined cylinder 471; a servo motor 472 with driving function is fixedly installed on the side of the primary combined cylinder 471 by bolts, and a gear 473 is inserted and fixed at the end of the transmission shaft of the servo motor 472.

[0029] The gear 473 meshes with the support gear ring 474 on its side, and the support gear ring 474 is rotatably mounted in the groove inside the first-stage combined cylinder 471; the support gear ring 474 is fixedly installed in the middle of the side of the second-stage combined cylinder 475, and a pressure cylinder 476 with adjustment function is fixedly installed on the side of the second-stage combined cylinder 475, and a detection cylinder assembly 477 is fixedly installed at the end of the piston rod of the pressure cylinder 476; a photoelectric sensor for positioning is also provided between the first-stage combined cylinder 471 and the second-stage combined cylinder 475.

[0030] The detection cylinder assembly 477 includes an arc-shaped plate 4771 fixedly installed at the end of the piston rod of the pressure cylinder 476; a light-transmitting plate 4772 is inserted and fixedly connected to the inner arc surface of the arc-shaped plate 4771, and an array of pressure detection components 4773 are embedded in the light-transmitting plate 4772; eight sets of vision element arrays 4774 with an included angle of 40 degrees are fixedly installed inside the arc-shaped plate 4771, and the vision element array 4774 is specifically an industrial camera.

[0031] The flip table 3 is rotatably mounted on the base plate via a rotating shaft. The base plate contains a reset structure and a sensor that drive the rotating shaft to rotate. The sensor is connected to the unit controller 48 for detecting and adjusting the processing angle of the U-bolt. Example 2:

[0032] Please see Figures 1-6 The present invention provides a U-shaped bolt progressive stamping device and method with adaptive positioning function. Compared with Embodiment 1, this embodiment further includes: a pressure detection component 4773 comprising a housing, the housing being fixed on a light-transmitting plate 4772, and a photosensitive plate 47731 being fixed at the rear end inside the housing; a sliding plate 47733 being slidably disposed inside the housing, and a light source matrix 47732 being fixedly installed on the rear side of the sliding plate 47733 by bolts; a permanent magnet bracket 47734 with a supporting function being slidably disposed at the front end of the sliding plate 47733, and a semi-circular arc plate being disposed on the front side of the permanent magnet bracket 47734; a ball bearing 47735 being rotatably installed inside the arc plate of the permanent magnet bracket 47734, and a reset member 47736 being disposed between the permanent magnet bracket 47734 and the sliding plate 47733.

[0033] The working principle of the U-bolt progressive stamping device and method with adaptive positioning function described above is as follows:

[0034] First, the operator or robot places the U-bolt material to be processed through the positioning assembly 4 onto the tilting table 3. Then, the drive motor 42 is controlled to rotate the segment rod 43. Since the threaded end of the segment rod 43 engages with the sleeve in the electromagnetic sleeve 44 installed on the opening and closing housing 45, the rotational motion of the segment rod 43 is converted into the linear motion of the opening and closing housing 45 relative to the fixed housing 41 by controlling the coil in the electromagnetic sleeve 44 to complete the closing. The positioning rod 46 slides in the bottom ear plate on the side of the opening and closing housing 45 to ensure the smoothness and alignment of the closing process. After the two housings are closed, the magnetic semi-ring structure on the inner bottom side of the housings together form a complete ring. The magnetic circuit initially encloses the two sets of primary combined cylinders 471. After the rotating cylinder assembly 47 completes the enclosure, the pressure cylinder 476 drives the detection cylinder assembly 477 to contact the surface of the U-bolt material. Here, the ball bearings 47735 of the pressure-bearing detection assembly 4773 contact the U-bolt material. When the inner wall contour is irregular, the ball bearings 47735 will be subjected to pressure or displacement, driving the permanent magnet support 47734 to move. The permanent magnet support 47734 slides relative to the sliding plate 47733, changing the distance or relative position between the light source matrix 47732 fixed on the sliding plate 47733 and the photosensitive plate 47731 fixed on the housing, resulting in an increase in the light intensity received by the photosensitive plate. The signal changes; this change is precisely measured, thereby deducing the micro-displacement or pressure value experienced by the ball; multiple pressure detection components arranged in an array can acquire a contact pressure distribution map around the inner wall; simultaneously, eight sets of vision arrays 4774 installed inside the arc plate 4771 at a 40-degree angle continuously capture images of the inner wall of the bolt bend from different angles, constructing three-dimensional point cloud data of the inner wall contour, identifying its geometry, bending radius, and possible local deformations; the unit controller 48 receives image data from the vision array 4774 and pressure / displacement signals from the pressure detection components 4773 in real time; the unit controller 48 performs fusion processing on these data. The actual center axis, curvature, and deviation from the ideal model of the U-bolt's bent section are accurately calculated. Then, the clamping plate and coil plate on the flipping table 3 are used to apply a small amount of pressure to the U-bolt to resolve the curvature deviation of the raw material. Then, the pressure cylinder 476 is controlled to push the detection cylinder assembly 477 to fit. After multiple, gradual fine-tuning of the U-bolt surface, the detection data shows that the inner arc surface of the detection cylinder assembly 477 and the inner wall of the U-bolt's bent section have reached the optimal fit. At this point, the U-bolt is considered to have reached the standard value. Then, the middle section of the U-bolt's bent section is stamped by the stamping cooperation of the flipping table 3 and the stamping press body 1.

[0035] This invention provides an improved U-bolt progressive stamping device and method with adaptive positioning function, upgrading traditional rigid positioning to dynamic adaptive intelligent positioning. By fusing data from visual scanning and micro-contact sensing, the actuator is driven to actively correct and progressively adjust the U-bolt in a closed loop, eliminating the shape and position deviation of the raw material from the source. This achieves a fully automated closed-loop process from data sensing to data correction, then to precise positioning and finally stamping, significantly improving the accuracy, consistency and intelligence level of complex curved workpiece processing. It is a landmark advancement in the field of stamping forming.

[0036] The above description shows and illustrates the basic principles, main features, and advantages of the present invention. Standard parts used in the present invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts, and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0037] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A U-shaped bolt progressive stamping device with adaptive positioning function, comprising a stamping press body (1); an adjusting component (2) with an adjusting function is fixedly installed on the top of the stamping press body (1) by bolts; the adjusting component (2) is specifically composed of a linear motor guide rail assembly and a base plate, and a flipping table (3) is rotatably installed on the top of the base plate; a positioning component (4) is fixedly installed in the groove on the top side of the flipping table (3), and the top of the flipping table (3) is also provided with a clamping plate with a clamping function and a coil plate for electromagnetic drive; Its features are: The positioning component (4) includes a fixed housing (41) fixedly installed in the groove on the top side of the tilting table (3); the fixed housing (41) has ear plates at both the upper and lower ends of its side, and a drive motor (42) with a driving function is fixedly installed on the top ear plate of the side of the fixed housing (41); a segmented rod (43) with an adjustment function is welded and fixed to the end of the drive shaft of the drive motor (42); one side of the threaded end of the segmented rod (43) is threaded with the inner thread of the electromagnetic screw sleeve (44), and the electromagnetic screw sleeve (44) is specifically composed of a screw sleeve and a coil collar set on the outside of the screw sleeve; the electromagnetic screw sleeve (44) is respectively provided with Inside the ear plate at the top of the side of the fixed housing (41) and the opening and closing housing (45); inside the ear plate at the bottom of the side of the fixed housing (41) and the opening and closing housing (45), a positioning rod (46) with a limiting function is slidably provided; a magnetic semi-ring structure at a 180-degree angle is provided on the bottom inner side of the fixed housing (41) and the opening and closing housing (45), and a rotating cylinder assembly (47) is rotatably provided on the outer side of the magnetic semi-ring structure; a single controller (48) is fixedly installed on the side of the fixed housing (41) and the opening and closing housing (45) by bolts, and the single controller (48) is connected to the rotating cylinder assembly (47) by a cable; The rotating cylinder assembly (47) includes a magnetic semi-ring structure rotatably disposed between the fixed housing (41) and the opening and closing housing (45), the magnetic semi-ring structure being magnetically attracted to the first-stage combined cylinder (471); a servo motor (472) with driving function is fixedly installed on the side of the first-stage combined cylinder (471) by bolts, and a gear (473) is inserted and fixedly fixed at the end of the transmission shaft of the servo motor (472); the side of the gear (473) meshes with a support gear ring (474), and the support gear ring (474) is rotatably disposed in the groove inside the first-stage combined cylinder (471); the support gear ring (474) is fixedly installed in the middle of the side of the second-stage combined cylinder (475), and a pressure cylinder (476) with adjusting function is fixedly installed on the side of the second-stage combined cylinder (475), and a detection cylinder assembly (477) is fixedly installed at the end of the piston rod of the pressure cylinder (476); a photoelectric sensor for positioning function is also provided between the first-stage combined cylinder (471) and the second-stage combined cylinder (475); The detection cylinder assembly (477) includes an arc-shaped plate (4771) fixedly installed at the end of the piston rod of the pressure cylinder (476); a light-transmitting plate (4772) is inserted and fixedly connected to the inner arc surface of the arc-shaped plate (4771), and an array of pressure detection components (4773) is embedded in the light-transmitting plate (4772); eight sets of vision element arrays (4774) with an included angle of 40 degrees are fixedly installed inside the arc-shaped plate (4771), and the vision element array (4774) is specifically an industrial camera; The pressure detection component (4773) includes a housing, which is fixed to the light-transmitting plate (4772), and a photosensitive plate (47731) is fixed to the rear end of the housing. A sliding plate (47733) is slidably disposed inside the housing, and a light source matrix (47732) is fixedly installed on the rear side of the sliding plate (47733) by bolts. A permanent magnet bracket (47734) with a supporting function is slidably disposed at the front end of the sliding plate (47733), and a semi-circular arc plate is disposed on the front side of the permanent magnet bracket (47734). A ball bearing (47735) is rotatably installed inside the arc plate of the permanent magnet bracket (47734), and a reset member (47736) is disposed between the permanent magnet bracket (47734) and the sliding plate (47733). The flipping table (3) is rotatably mounted on the base plate via a rotating shaft. The base plate is provided with a reset structure and a sensor that drive the rotating shaft to rotate. The sensor is connected in communication with the unit controller (48) and is used to detect and adjust the processing angle of the U-bolt.

2. A method of using a U-bolt progressive stamping device with adaptive positioning function, used to implement the U-bolt progressive stamping device with adaptive positioning function as described in claim 1, characterized in that: Includes the following steps: Step 1, loading and fixing: Place the U-bolt raw material on the turning table (3), and complete the initial fixing by controlling the opening and closing of the clamping plate and positioning component (4) on the turning table (3); Step 2, Data Acquisition and Processing: The changes in light signals are acquired through the visual array set by the positioning component (4), the micro-contact pressure is sensed through the pressure detection components distributed in the array, complete shape and pressure distribution information is acquired, and data is processed through the single controller (48); Step 3, Progressive active correction and stamping: Based on the deviation data, the raw material is actively pressed down and fine-tuned by the clamping mechanism on the flip table (3) to correct the macroscopic curvature deviation; then the stamping machine body (1) and the positioning component (4) are controlled to repeatedly perform fitting and detection cycles to perform progressive closed-loop fine-tuning. The flip table (3) cooperates with the stamping machine body (1) to perform the final stamping forming of the bent part of the U-bolt.

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