Heavy truck longitudinal beam rolling processing device and processing method

Abstract

The invention provides a heavy truck longitudinal beam rolling processing device and a processing method, relates to the technical field of heavy truck longitudinal beam processing equipment, and aims to solve the problem of low processing production efficiency of heavy truck longitudinal beams in the prior art. The heavy truck longitudinal beam roll-over machining device comprises a first roll-over unit, a second roll-over unit, a supporting unit, a first three-axis machining center unit and a second three-axis machining center unit, and the first roll-over unit and the second roll-over unit are arranged at the two ends of a workpiece in the first direction and can drive the two ends of the workpiece to rotate at the same angle. The supporting unit is arranged between the first rolling unit and the second rolling unit and can support workpieces with different rotating angles, and the first three-axis machining center unit and the second three-axis machining center unit are arranged on the two sides of the workpieces correspondingly and can move in the first direction to machine different positions of the workpieces correspondingly. According to the machining device, the efficiency is greatly improved, the labor intensity of operators can be reduced, and the safety performance is improved.

Description

Technical Field

[0001] This invention relates to the field of heavy-duty truck longitudinal beam processing equipment, and in particular to a heavy-duty truck longitudinal beam rolling processing device and processing method. Background Technology

[0002] The longitudinal beams of a heavy-duty truck frame are a major component, and their quality has a significant impact on the frame and the overall vehicle quality. As the largest component of the frame, the longitudinal beams bear various impact loads and complex torques during truck operation; therefore, their strength is of paramount importance.

[0003] The cross-sectional dimensions (length x width x height) of the load-bearing longitudinal beams for heavy trucks are 8000mm–12000mm × 450mm × 130mm, with steel plate wall thicknesses ranging from 12mm to 20mm. Before assembly, they are slender and have poor stiffness. They only acquire load-bearing stiffness and strength after machining and assembly of multiple components. Individual longitudinal beams and assemblies are shown below. Figure 1 and Figure 2 As shown.

[0004] The original processing equipment was a fixed-workpiece type that did not automatically rotate, as follows: Figure 3 As shown, the traditional machining process for the longitudinal beams of heavy-duty trucks ranging from 5 to 12 meters involves horizontally hoisting them from the blank area and clamping them on the central worktable 001. The machining of the two narrow sides in the width direction of the workpiece is performed, and the curvature of the workpiece is checked. After completion, the workpiece is hoisted horizontally and transferred to the turnover area, where it is lowered into an inclined V-groove. With manual assistance, the workpiece 011 is uprighted, and the hoisting ropes are adjusted to maintain its upright position. It is then hoisted and transported to the central worktable for clamping and machining, achieving the machining of the two wide sides in the thickness direction. After machining, it is hoisted vertically again and transferred to the finished product area for cleaning, inspection, and stacking. Because the installation of the workpiece in both horizontal and vertical positions requires a unified reference standard, two sets of fixtures must be used: one for horizontal positioning (bottom surface) and a combined pressure plate clamping the workpiece horizontally onto the fixture body; and another for vertical positioning (right-angle bending plate fixture on the fixed worktable) and a combined pressure plate clamping the workpiece onto the right-angle bending plate. If a single machine tool is to complete all processes, it requires two different types of fixtures to be installed twice. Changing fixtures is labor-intensive and time-consuming. If two machines are used to install different fixtures for processing, they can respectively complete the processing of the two narrow sides in the width direction when the machine is laid flat and the two wide sides in the thickness direction when the machine is erected. Traditional machining processes involve discontinuous actions in each step and process, large working areas, long logistics routes, serious cross-operations between equipment, and excessive manual intervention or human involvement (such as hoisting, transporting, and flipping), which can easily lead to safety accidents. Moreover, production efficiency is low, and output can only be increased to meet market demand by increasing investment, expanding factory buildings, increasing personnel, and implementing multi-shift production. Summary of the Invention

[0005] The purpose of this invention is to provide a heavy-duty truck longitudinal beam rolling processing device and processing method to solve the problem of low processing efficiency of heavy-duty truck longitudinal beam workpieces in the prior art. The heavy-duty truck longitudinal beam rolling processing device of this invention improves efficiency by nearly 100%, reduces the number of operators by more than half, reduces the floor space by half, and also reduces the labor intensity and operation skill requirements of operators, while improving safety performance.

[0006] The present invention provides a heavy truck longitudinal beam roll-over processing device, comprising a first roll-over unit, a second roll-over unit, a support unit, a first three-axis machining center unit, and a second three-axis machining center unit. The first roll-over unit and the second roll-over unit are respectively disposed at both ends of the workpiece in a first direction and can drive both ends of the workpiece to rotate at the same angle. The support unit is disposed between the first roll-over unit and the second roll-over unit and can support the workpiece at different rotation angles. The first three-axis machining center unit and the second three-axis machining center unit are respectively disposed on both sides of the workpiece and can move along the first direction to process different positions of the workpiece.

[0007] As a preferred embodiment of the present invention, both the first tumbling unit and the second tumbling unit include a first base, a transmission power box, a drive assembly, and a clamp bracket. The transmission power box is mounted on the first base, the drive assembly is connected to the transmission power box and its power output end is connected to the clamp bracket, the clamp bracket is located on one side of the transmission power box and is used to fix the end of the longitudinal beam. The drive assembly on the first tumbling unit and the second tumbling unit can drive both ends of the longitudinal beam to rotate synchronously.

[0008] In a preferred embodiment of the present invention, the support unit includes a second base, a lifting mechanism, and a frame. The bottom end of the lifting mechanism is connected to the second base, and the top end of the lifting mechanism is connected to the frame. The lifting mechanism can drive the frame to move up and down relative to the second base. The frame has an upward-facing placement slot in the middle. A first support mechanism is provided at the top end of the frame, and a second support mechanism is provided on the bottom surface of the placement slot. A clamping mechanism is provided on the frame, which can clamp the workpiece placed in the placement slot.

[0009] In a preferred embodiment of the present invention, the frame includes a left frame and a right frame, the left frame and the right frame are symmetrically arranged about the centerline of the frame and the lower ends of the left frame and the right frame are connected by a connecting part. The placement slot is disposed between the left frame and the right frame on the upper side of the connecting part. The clamping mechanism includes two transverse drive members and two hinged pressure plates. The two transverse drive members are respectively disposed on the left frame and the right frame and their output ends face each other. The hinged pressure plates are connected to the output ends of the transverse drive members and the transverse drive members can drive the hinged pressure plates to extend into the placement slot.

[0010] As a preferred embodiment of the present invention, the support unit further includes a wedge mechanism, which includes a wedge block and a wedge groove. A snap-fit ​​plate is provided on the same side of both the left and right frames, and the wedge groove is formed between the two snap-fit ​​plates. The wedge block is connected to the second base via a lifting drive component. The wedge block is adapted to and embedded in the wedge groove. The wedge block is trapezoidal, and the wedge groove is trapezoidal with an upper opening smaller than a lower opening. The wedge block can be embedded into the wedge groove from the lower side.

[0011] In a preferred embodiment of the present invention, the lifting mechanism includes a vertical drive member and two guide rods. The bottom end of the vertical drive member is connected to the second base, and the top end of the vertical drive member is connected to the connecting part on the frame. The two guide rods are symmetrically arranged on the left and right sides of the vertical drive member. The bottom end of the guide rod is connected to the second base, and the upper end of the guide rod is slidably connected to the left frame or the right frame. The vertical drive member and the two guide rods are arranged on the same straight line. The lifting drive member is arranged in front of the vertical drive member. The straight line between the lifting drive member and the vertical drive member is perpendicular to the straight line between the vertical drive member and the two guide rods.

[0012] As a preferred embodiment of the present invention, the drive assembly includes a drive motor, a gear pair assembly and a main shaft. The drive motor is mounted on one side of the transmission power box and its output shaft is connected to one end of the gear pair assembly. The other end of the gear pair assembly is connected to the main shaft. The main shaft extends out of the other side of the transmission power box and is connected to the clamp bracket.

[0013] In a preferred embodiment of the present invention, a first pull rod is provided inside the main shaft, the first pull rod is coaxially arranged with the main shaft, the output end of the first pull rod extends out of the main shaft and is provided with a limiting part at its output end, the limiting part being connected to the fixture bracket; or a second pull rod is provided inside the main shaft, the second pull rod is coaxially arranged with the main shaft, the output end of the second pull rod extends out of the main shaft and is connected to a universal joint for connecting with the workpiece at its output end, the input section of the second pull rod being connected to a tensioning cylinder.

[0014] As a preferred embodiment of the present invention, it further includes a ground rail, on the upper side of which a guide groove is provided along its length direction, and an adjustable pad is provided on the bottom side of the ground rail and fixedly connected to the foundation through the adjustable pad. The first rolling unit, the second rolling unit and the support unit are adjustable and connected to the guide groove.

[0015] The present invention also provides a processing method for the heavy truck longitudinal beam rollover processing device, characterized by comprising the following steps: Workpieces are loaded and unloaded on the first and second tumbling units, and the positioning surfaces are cleaned. The initial position of the workpiece is horizontal. Both ends of the workpiece are connected and locked to the first and second tumbling units respectively. The support unit rises to its position and wedges into place, supporting the horizontally positioned workpiece. The first and second three-axis machining centers move to their positions on both sides of the workpiece and then perform machining. After machining at this angle, the first and second three-axis machining centers return the workpiece to its set position. The support unit wedges apart and falls into place. The first and second tumbling units synchronously drive the workpiece back to its set position. The workpiece is rotated 90° to an upright position; the support unit bracket rises and wedges into place, while the two clamping mechanisms on both sides clamp the workpiece; the first and second three-axis machining center units process the workpiece after moving to their positions on both sides; after processing at this angle, the first and second three-axis machining center units return the workpiece to the set position; the clamping mechanisms on both sides of the support unit move in opposite directions, separating the wedges, and the bracket falls into place; the first and second tumbling units synchronously drive the workpiece to rotate 90° in the opposite direction, bringing the workpiece to a horizontal position; the first and second tumbling units release the workpiece.

[0016] Compared with the prior art, the present invention has the following positive effects: The heavy-duty truck longitudinal beam rolling machining device provided by this invention includes a first rolling unit, a second rolling unit, a support unit, a first three-axis machining center unit, and a second three-axis machining center unit. The first rolling unit and the second rolling unit are respectively disposed at both ends of the workpiece in a first direction and can drive both ends of the workpiece to rotate at the same angle. The support unit is disposed between the first rolling unit and the second rolling unit and can support the workpiece at different rotation angles. The first three-axis machining center unit and the second three-axis machining center unit are respectively disposed on both sides of the workpiece and can move along the first direction to process different positions of the workpiece. The workpiece rolling posture conversion in this invention realizes the processing of all processes on at least four sides of the heavy-duty truck longitudinal beam, and can simultaneously meet the requirement that two sets of heavy-duty truck bearing longitudinal beams (two symmetrical workpieces, 5-12 meters in length) share one rolling power unit for processing on this equipment, eliminating the labor-intensive and time-consuming problem of fixture replacement. The entire milling, drilling, boring, reaming, tapping and other drawing-marked processes of the longitudinal beam are completed in a programmed manner, requiring nearly 30 cutting tools to complete the workload. A one-time investment in this device costs only 80% of the price of the original general-purpose equipment, based on comparable market prices. It nearly doubles the efficiency, reduces the number of operators by more than half, and halves the floor space required. At the same time, it reduces the labor intensity and skill requirements of operators and improves safety performance. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a structural schematic diagram of a single longitudinal beam; Figure 2 This is a structural schematic diagram of the longitudinal beam assembly; Figure 3 A schematic diagram of the structure of a workpiece processed by traditional machining equipment; Figure 4 This is a schematic diagram of the heavy truck longitudinal beam rolling processing device of the present invention when loading and unloading the workpiece at 0° horizontally; Figure 5 This is a schematic diagram of the heavy truck longitudinal beam rolling processing device of the present invention when the workpiece is in a 90° upright state. Figure 6 This is a schematic diagram of the first tumbling unit of the present invention loading and unloading the workpiece at 0° horizontally; Figure 7 This is a schematic diagram of the first tumbling unit of the present invention when the workpiece is upright at 90°. Figure 8 This is a front view of the first tumbling unit of the present invention when loading and unloading the workpiece at 0° horizontally; Figure 9 This is a right view of the first tumbling unit of the present invention when loading and unloading the workpiece at 0° horizontally. Figure 10 This is a schematic diagram of the internal structure of the first tumbling unit of the present invention when loading and unloading the workpiece at 0° horizontally. Figure 11 This is a schematic diagram of the second tumbling unit of the present invention loading and unloading the workpiece at 0° horizontally; Figure 12 This is a schematic diagram of the second tumbling unit of the present invention when the workpiece is upright at 90°. Figure 13 This is a schematic diagram of the internal structure of the second tumbling unit of the present invention when loading and unloading the workpiece at 0° horizontally. Figure 14 This is a right view of the second tumbling unit of the present invention when loading and unloading the workpiece at 0° horizontally.

[0019] Figure 15 This is a schematic diagram of the internal structure of the longitudinal beam support device of the present invention; Figure 16 This is a front view of the longitudinal beam support device of the present invention; Figure 17 This is a right view of the longitudinal beam support device of the present invention; Figure 18 This is a schematic diagram of the longitudinal beam support device of the present invention supporting the workpiece at 0° horizontal angle. Figure 19 This is a schematic diagram of the longitudinal beam support device of the present invention in the avoidance state when the workpiece rolls over. Figure 20 This is a schematic diagram of the longitudinal beam support device of the present invention when the workpiece is held upright at 90°. In the diagram: 001, Central worktable; 011, Workpiece; 322, Second base; 3221, Support plate; 3222, Support leg; 3223, Connecting base plate; 323, Guide rod; 324, Vertical drive component; 325, Frame; 3251, Left frame; 3252, Right frame; 3253, Placement slot; 3254, Connecting part; 326, Wedge mechanism; 3261, Lifting drive component; 3262, Snap-fit ​​plate; 3263, Wedge block; 3264, Wedge groove; 327, Clamping mechanism; 3271, Hinge support plate; 3272, Horizontal drive component; 328, First support mechanism; 329, Second support mechanism; 11, First base; 12, Transmission... 121. Power box; 122. Threaded hole; 123. Connecting seat; 14. Drive assembly; 15. Drive motor; 16. Gear assembly; 17. Spindle; 18. Mounting block; 19. First tie rod; 100. Limiting part; 111. Second tie rod; 122. Tensioning cylinder; 133. Universal joint; 14. Fixture bracket; 15. Ground rail; 16. Guide groove; 17. Adjustable pad; 18. Limiting bracket; 19. Limiting pin; 100. Lead screw motor; 111. Transmission lead screw; 122. First tumbling unit; 123. Second tumbling unit; 124. Support unit; 125. First three-axis machining center unit; 126. Second three-axis machining center unit. Detailed Implementation

[0020] In the description of this invention, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying it, 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, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0022] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0023] Example 1: This embodiment provides a heavy-duty truck longitudinal beam roll-over processing device, such as... Figures 4-20 As shown, it includes a first tumbling unit 100, a second tumbling unit 200, a support unit 300, a first three-axis machining center unit 400, and a second three-axis machining center unit 500.

[0024] The first tumbling unit 100 and the second tumbling unit 200 are respectively positioned at both ends of the workpiece in the first direction x and can drive both ends of the workpiece to rotate at the same angle. The support unit 300 is positioned between the first tumbling unit 100 and the second tumbling unit 200 and can support the workpiece at different rotation angles. Multiple support units 300 can be provided, and the number of support units 300 can be selectively set according to the length of the workpiece being processed. Three support units 300 can be provided, which undertake the function of maintaining rigidity after changes in workpiece posture. The support position of the support unit 300 can be adjusted along the first direction x to match different workpiece fixtures and fully utilize the effective stroke.

[0025] The first three-axis machining center unit 400 and the second three-axis machining center unit 500 are respectively positioned on both sides of the workpiece and can move along the first direction x to machine different positions on the workpiece. One unit of each of the first three-axis machining center unit 400 and the second three-axis machining center unit 500 is provided, and each is responsible for the automatic machining of the corresponding side; it uses full CNC functions and programmed tool magazine exchange to complete the assigned machining operations. The first three-axis machining center unit 400 and the second three-axis machining center unit 500 are symmetrically arranged on both sides of the workpiece and have the same function. Both the first three-axis machining center unit 400 and the second three-axis machining center unit 500 can use existing machining equipment.

[0026] In this embodiment, the control device uses three sets of CNC systems to control the actions, communicate and schedule with each other in real time, and can be started or stopped with one button at any position. The first tumbling unit 100, the second tumbling unit 200, and the support unit 300 are controlled by the same CNC system A, the first three-axis machining center unit 400 is controlled by CNC system B, and the second three-axis machining center unit 500 is controlled by CNC system C.

[0027] In this embodiment, the CNC automatic rolling (0°~360° arbitrary angle) posture conversion of the workpiece enables the processing of all processes on at least four sides of the heavy truck longitudinal beam. It can simultaneously process two sets of heavy truck bearing longitudinal beams (two symmetrical workpieces, 5-12 meters in length) using a single rolling power unit on this equipment, eliminating the time-consuming and labor-intensive problem of fixture replacement. The system programmatically completes all milling, drilling, boring, reaming, tapping, and other processes indicated on the drawings for the longitudinal beam, requiring nearly 30 cutting tools. A one-time investment in this device costs only 80% of the price of comparable market equipment, nearly doubles efficiency, reduces the number of operators by more than half, halves the floor space, reduces the labor intensity and skill requirements of operators, and improves safety performance.

[0028] In a preferred embodiment, both the first tumbling unit 100 and the second tumbling unit 200 include a first base 11, a transmission power box 12, a drive assembly 13, and a clamp bracket 14. The transmission power box 12 is mounted on the first base 11, and the first base 11 supports and fixes the transmission power box 12. The clamp brackets 14 of the first tumbling unit 100 and the second tumbling unit 200 are arranged opposite to each other. The drive assembly 13 is connected to the transmission power box 12, and its power output end is connected to the clamp bracket 14. The transmission power box 12 is used to protect and support the drive assembly 13. The clamp bracket 14 is located on one side of the transmission power box 12 and is used to fix the end of the longitudinal beam. The clamp bracket 14 has a fixing part for mounting and fixing the longitudinal beam. This fixing part only needs to be able to connect the longitudinal beam to the clamp bracket 14. Different fixing parts can be provided according to different longitudinal beam shapes. The fixing part can fix the longitudinal beam by snap-fit ​​or other methods.

[0029] The longitudinal beam rolling device in this embodiment connects and fixes the longitudinal beam by setting a first rolling unit 100 and a second rolling unit 200 at both ends of the longitudinal beam. The first rolling unit 100 and the second rolling unit 200 are coupled and synchronously controlled in terms of the rotation angle, while the power drive is implemented independently, which facilitates coupling matching and adjustment of the initial angle. When the drive assembly 13 drives the clamp bracket 14 to rotate, the two ends of the longitudinal beam can rotate at the same angle. Compared with the traditional method of rotation by hoisting, the rotation efficiency is higher and it is safer and more reliable.

[0030] In a preferred embodiment, the drive assembly 13 includes a drive motor 131, a gear pair assembly 132, and a main shaft 133. The drive motor 131 is mounted on one side of the transmission power box 12, and its output shaft is connected to one end of the gear pair assembly 132. The other end of the gear pair assembly 132 is connected to the main shaft 133. The main shaft 133 extends out from the other side of the transmission power box 12 and is connected to the clamp bracket 14. Preferably, an angle detector is provided on the main shaft 133.

[0031] In this embodiment, the drive motor 131 transmits rotational torque to the spindle 133 through the gear pair assembly 132, achieving a roll angle of ±110°, a minimum set rotation angle of 0.001°, a roll speed of 3 revolutions per minute, and an indexing accuracy of no more than 10″. The roll acceleration and deceleration curve can be set to linear or bell-shaped mode to reduce the impact of rotation start and stop. If the workpiece is a standard square workpiece (such as a longitudinal beam), it can be machined on all four sides by simply rotating it 90°.

[0032] In a preferred embodiment, a first pull rod 134 is provided inside the main spindle 133. The first pull rod 134 is coaxially arranged with the main spindle 133, and its output end extends out of the main spindle 133 and has a limiting part 1341, which is connected to the fixture bracket 14. The first pull rod 134 can further strengthen the connection between itself and the fixture bracket 14, making the rotation of the fixture bracket 14 more stable.

[0033] Alternatively, a second tie rod 135 can be provided inside the main spindle 133. The second tie rod 135 is coaxially arranged with the main spindle 133, and its output end extends out of the main spindle 133 and is connected to a universal joint 137 for connecting with the workpiece. The input section of the second tie rod 135 is connected to the tensioning cylinder 136. In this embodiment, the tensioning cylinder 136 is connected to the universal joint 137 on the fixture bracket 14 through the second tie rod 135 at the center of the main spindle. The universal joint 137 is then connected to the workpiece. The tensioning cylinder 136 has a stroke of 200mm. When installing the workpiece, the tensioning cylinder is depressurized, and the plug-in universal joint 137 is manually pulled to connect with the workpiece. After checking the installation status at each point, the tensioning cylinder operates, increasing the tension of the longitudinal beam through the piston pulling force (pressure adjustable), thereby improving its rigidity.

[0034] In a preferred embodiment, a mounting block 1331 is provided at the output end of the spindle 133. The mounting block 1331 can be a disc-shaped structure with a diameter larger than that of the spindle 133. The spindle 133 and the mounting block 1331 are integrally formed, providing a strong and stable connection. The mounting block 1331 is connected to the clamp bracket 14 by multiple bolts. Specifically, eight connecting holes are evenly arranged around the mounting block, and it is connected to the clamp bracket 14 by eight bolts. After the clamp bracket 14 is positioned on the mounting block, eight M20 screws and locating pins on the flange are tightened.

[0035] In a preferred embodiment, a limit bracket 17 is provided on one side of the top of the transmission power box 12, extending to the upper side of the clamp bracket 14. The limit bracket 17 can adjust the limit angle of the workpiece's allowable rollover, serving as a mechanical limiting device and an effective means of ensuring mechanical safety.

[0036] In a preferred embodiment, a limiting pin 18 is provided on the side of the transmission power box 12 near the fixture bracket 14. The limiting pin 18 is located on the lower side of the main shaft 133, and a positioning hole is provided on the fixture bracket 14. The limiting pin 18 can extend out of the transmission power box 12 and be inserted into the positioning hole. The aforementioned limiting pin 18 can be an intelligent hydraulic pin, serving as a precise roll angle positioning mechanism, with stroke completion detection and pressure detection; the standard φ50mmx90° zero-point tapered pin module design has strong shear resistance and stable repeatability. Combined with the detected changes in the pin's entry and exit load, it intelligently manages and prompts the difference between the pre-roll angle and the theoretical angle, delaying the wear of the zero-point positioning mechanism.

[0037] In this embodiment, the limiting bracket 17 and the limiting pin 18 are used to limit and protect the large workpiece, ensuring the accuracy and safety of the rolling.

[0038] As a preferred embodiment, such as Figure 6 As shown, multiple sets of threaded holes 121 are provided on the top of the first base 11, arranged along the length of the first base 11. Each set of threaded holes has four holes in the width direction of the first base 11. The bottom of the transmission power box 12 is provided with connecting holes 111 corresponding to the threaded holes 121. The transmission power box 12 is connected to the threaded holes 121 by a connector passing through the connecting hole and the threaded hole 121. The connector can be a bolt, which is convenient for connection. The distance between two adjacent sets of threaded holes is 180mm, and the maximum distance can be manually adjusted to 1080mm.

[0039] In this embodiment, multiple sets of threaded holes 121 are arranged along the length of the first base 11, so that the transmission power box 12 and the fixture bracket 14 can move along the transmission power box 12 to match different workpiece fixtures and make full use of the effective stroke.

[0040] In a preferred embodiment, a transmission screw 191 and a screw motor 19 are provided on the upper side of the first base 11. The output end of the screw motor 19 is connected to the transmission screw 191, and the bottom of the transmission power box 12 is connected to the transmission screw 191. Specifically, the bottom of the transmission power box 12 is connected to the transmission screw 191 via a connecting seat 122 provided on the transmission screw 191.

[0041] The first base 11 is a supporting component for the transmission power box 12. A CNC linear motion U-axis is set between the two, driven by the lead screw motor 19 and the T-type self-locking lead screw pair. The effective stroke is 1000mm, which facilitates workpiece docking and adjustment and automatic workpiece release.

[0042] Specifically, in this embodiment, the first tumbling unit 100 and the second tumbling unit 200 both include a first base 11, a transmission power box 12, a drive assembly 13, a clamp bracket 14, a limiting bracket 17, and a limiting pin 18.

[0043] like Figures 6-10 As shown, a first pull rod 134 is provided inside the main shaft 133 of the first tumbling unit 100. The output end of the first pull rod 134 extends out of the main shaft 133 and is provided with a limiting part 1341 at its output end. The limiting part 1341 is connected to the clamp bracket 14. A plurality of threaded holes 121 are provided on the top of the first base 11 of the first tumbling unit 100. The plurality of threaded holes 121 are arranged along the length direction of the first base 11.

[0044] like Figures 11-14 As shown, a second tie rod 135 is provided inside the main shaft 133 of the second tumbling unit 200. The output end of the second tie rod 135 extends out of the main shaft 133 and is connected to a universal joint 137 for connecting with the workpiece. The input section of the second tie rod 135 is connected to the tensioning cylinder 136. A transmission screw 191 and a screw motor 19 are provided on the upper side of the first base 11 of the second tumbling unit 200. The output end of the screw motor 19 is connected to the transmission screw 191, and the bottom of the transmission power box 12 is connected to the transmission screw 191.

[0045] In a preferred embodiment, the support unit 300 includes a second base 322, a lifting mechanism, and a frame 325. The bottom end of the lifting mechanism is connected to the second base 322, and the top end of the lifting mechanism is connected to the frame 325. The lifting mechanism can drive the frame 325 to move up and down relative to the second base 322. The frame 325 has an upward-facing placement slot 3253 in the middle. A first support mechanism 328 is provided at the top end of the frame 325, and a second support mechanism 329 is provided on the bottom surface of the placement slot 3253. A clamping mechanism 327 is provided on the frame 325, which can clamp the workpiece placed in the placement slot 3253.

[0046] The support unit 300 in this embodiment has three usage states. When the workpiece is in a 0° horizontal machining position, such as... Figure 18 As shown, the lifting mechanism moves the frame 325 upward relative to the base 322, and the workpiece is placed horizontally on the upper side of the frame 325 and horizontally supported by the first support mechanism 328; when the workpiece needs to be flipped, as... Figure 19 As shown, the lifting mechanism moves the frame 325 downward relative to the base 322. The workpiece is flipped by the flipping mechanism located on both sides of the longitudinal beam support device. The lifting mechanism lowers the frame 325 to avoid interfering with the workpiece's flipping action. When the workpiece is in a 90° vertical processing position, as... Figure 20As shown, the lifting mechanism moves the frame 325 upward relative to the base 322 and allows the workpiece to pass through the placement slot 3253. The second support mechanism 329 provides vertical support for the workpiece, and the clamping mechanism 327 clamps the workpiece from the left and right sides of the frame 325 to clamp and limit the workpiece, thereby increasing the workpiece's position retention capability.

[0047] The support unit 300 in this embodiment has multiple usage states compared to the traditional support workbench. It can effectively support and position the workpiece in different placement states, occupy little space, and has flexible and changeable usage states, thereby improving the processing efficiency of the workpiece, shortening the production cycle, and making the operation safer.

[0048] Preferably, the first support mechanism 328 includes a plurality of first adjustable screws, which are respectively disposed at the top ends of the left frame 3251 and the right frame 3252. The second support mechanism 329 includes a plurality of second adjustable screws, which are disposed on the connecting part 3254. There are 2-4 first adjustable screws, which support the bottom of the workpiece, increasing the damping of the workpiece's vertical movement. That is, the upward cutting force (amplitude) cannot be overcome due to the large tension of the workpiece, while the downward bending deformation (amplitude) is hindered by the contact of the first adjustable screws with the workpiece, thereby avoiding vibration caused by the cutting force. There are 2-4 second adjustable screws.

[0049] In a preferred embodiment, the frame 325 includes a left frame 3251 and a right frame 3252. The left frame 3251 and the right frame 3252 are symmetrically arranged about the center line of the frame 325, and the lower ends of the left frame 3251 and the right frame 3252 are connected by a connecting part 3254. The placement slot 3253 is disposed between the left frame 3251 and the right frame 3252 on the upper side of the connecting part 3254. The clamping mechanism 327 includes two transverse drive members 3272 and two hinged pressure plates 3271. The two transverse drive members 3272 are respectively disposed on the left frame 3251 and the right frame 3252, and their output ends are arranged facing each other. The hinged pressure plates 3271 are connected to the output ends of the transverse drive members 3272. The transverse drive members 3272 can drive the hinged pressure plates 3271 to extend into the placement slot 3253. The hinged pressure plate 3271 is hinged to the output end of the transverse drive member 3272 to facilitate adjustment of the clamping direction of the hinged pressure plate 3271 on the workpiece. The hinged pressure plate 3271 has a crescent-shaped structure, with its arc-shaped middle hinged to the output end of the transverse drive member 3272. The transverse drive member 3272 is a hydraulic cylinder. Preferably, the placement groove 3253 gradually increases in width from its bottom end to its upper opening end to facilitate placement of the workpiece when it is placed vertically. The clamping mechanism 327 is located in the upper section of the placement groove 3253 to facilitate the transverse drive member 3272 to move laterally when the workpiece is placed in the placement groove 3253, thereby clamping the hinged pressure plate 3271 onto the workpiece.

[0050] In this embodiment, the frame 325 is provided with a left frame 3251 and a right frame 3252, and the placement slot 3253 is located between the left frame 3251 and the right frame 3252. When the workpiece is placed in the placement slot 3253, the transverse drive members 3272 on the left frame 3251 and the right frame 3252 can drive their respective hinged support plates 3271 to extend into the placement slot 3253 and clamp on the left and right sides of the workpiece, thereby clamping and fixing the workpiece.

[0051] In a preferred embodiment, the support unit 300 further includes a wedge mechanism 326. The wedge mechanism 326 includes a wedge block 3263 and a wedge groove 3264. A snap-fit ​​plate 3262 is provided on the same side of both the left frame 3251 and the right frame 3252, forming a wedge groove 3264 between the two snap-fit ​​plates 3262. The wedge block 3263 is connected to the second base 322 via a lifting drive component 3261. The wedge block 3263 is adapted to and embedded in the wedge groove 3264. The lifting drive component 3261 is a hydraulic cylinder. The lifting drive component 3261 can drive the wedge block 3263 to insert into the wedge groove 3264 to further support the frame 325, giving the frame 325 better stability and load-bearing capacity.

[0052] Preferably, the wedge block 3263 is trapezoidal, and the wedge groove 3264 is trapezoidal with an upper opening smaller than its lower opening, allowing the wedge block 3263 to be inserted into the wedge groove 3264 from the lower side. When the frame 325 rises, the vertical drive member 324 first raises the frame 325, and then the lifting drive member 3261 drives the trapezoidal wedge block 3263 to be inserted into the wedge groove 3264 from the lower side. The pressure on the wedge block 3263 gradually increases until the wedge block 3263 wedges the locking plates 3262 on both sides. When the frame 325 descends, the lifting drive member 3261 first drives the trapezoidal wedge block 3263 to move down and exit from the wedge groove 3264, and then the vertical drive member 324 drives the frame 325 to descend.

[0053] In a preferred embodiment, the lifting mechanism includes a vertical drive member 324 and two guide rods 323. The bottom end of the vertical drive member 324 is connected to the second base 322, and the top end of the vertical drive member 324 is connected to the connecting part 3254 on the frame 325. The two guide rods 323 are symmetrically arranged on the left and right sides of the vertical drive member 324. The bottom end of the guide rod 323 is connected to the second base 322, and the upper end of the guide rod 323 is slidably connected to the left frame 3251 or the right frame 3252. The vertical drive member 324 is a hydraulic cylinder. In this embodiment, the lifting mechanism drives the frame 325 to move up and down relative to the second base 322 through the vertical drive member 324. The two guide rods 323 act as guide wires between the second base 322 and the frame 325. When the vertical drive member 324 drives the frame 325 to move up and down, the frame 325 moves up and down along the guide rods 323, making the lifting movement of the frame 325 more stable and reliable.

[0054] The vertical drive component 324 and the two guide rods 323 are arranged on the same straight line. The lifting drive component 3261 is located in front of the vertical drive component 324. The straight line containing the lifting drive component 3261 and the vertical drive component 324 is perpendicular to the straight line containing the vertical drive component 324 and the two guide rods 323. A stable triangular support structure is formed between the vertical drive component 324, the guide rods 323, and the lifting drive component 3261, improving the stability and reliability of the lifting and moving of the frame 325. The wedge mechanism in this invention ensures that the lifting mechanism can self-lock and wedge together with the guide rods 323 to form an isosceles triangle, achieving stable support, regardless of its position.

[0055] Preferably, the second base 322 includes multiple vertically arranged support plates 3221, with support feet 3222 respectively provided on both sides of each support plate 3221. The multiple support plates 3221 are spaced apart, and the multiple support feet 3222 on the same side of each support plate 3221 are connected by a connecting base plate 3223. The support feet 3222 on both sides of each support plate 3221 provide good support stability. The span between two support feet 3222 on the same support plate 3221 is 900mm, and the stress height is no greater than 1600mm (overhang ratio ≤ 1:2), giving the longitudinal beam support device good support stability.

[0056] In a preferred embodiment, the heavy truck longitudinal beam rolling processing device provided in this embodiment further includes a ground rail 5. A guide groove 51 is provided on the upper side of the ground rail 5 along its length direction. An adjustable shim 6 is provided on the bottom side of the ground rail 5 and is fixedly connected to the foundation through the adjustable shim 6. The first rolling unit 100, the second rolling unit 200 and the support unit 300 are adjustable and connected to the guide groove 51.

[0057] Specifically, the bottom of the first base 11 of the first tumbling unit 100 is directly fixed to the foundation via multiple adjustable shims 6. The first base 11 of the second tumbling unit 200 is connected to the ground rail 5, and the first base 11 is adjustablely mounted on the guide groove 51. The two connecting base plates 3223 at the bottom of the support unit 300 are respectively connected to one of the ground rails 5. The connecting base plates 3223 and the ground rails 5 can be connected by screws, which facilitate adjustment of the connection position along the guide groove 51.

[0058] The guide groove 51 can be used to adjust the position of the base 1 in the length direction of the workpiece. The manually adjustable distance is no more than 6000mm, which can match the length of different workpieces and fixtures of 5 to 12 meters and make full use of the 12-meter CNC programming effective stroke.

[0059] This embodiment also provides a processing method for a heavy truck longitudinal beam rollover processing device, characterized by including the following steps: Workpieces are loaded and unloaded on the first tumbling unit 100 and the second tumbling unit 200, and the positioning surfaces are cleaned. The initial position of the workpiece is horizontal. Both ends of the workpiece are connected and locked to the first tumbling unit 100 and the second tumbling unit 200 respectively. The support unit 300 is raised into position and wedged in place to support the horizontally positioned workpiece. The first three-axis machining center unit 400 and the second three-axis machining center unit 500 move to their positions on both sides of the workpiece and then perform machining on it. After machining at this angle position is completed, the first three-axis machining center unit 400 and the second three-axis machining center unit 500 move the workpiece back to the set position. The support unit 300 wedges apart and falls into place. The first tumbling unit 100 and the second tumbling unit 200 synchronously drive the workpiece back. The workpiece is rotated 90° to an upright position; the support unit 300 bracket rises and wedges into place, while the two clamping mechanisms 327 clamp the workpiece on both sides; the first three-axis machining center unit 400 and the second three-axis machining center unit 500 process the workpiece after moving to their positions on both sides; after processing at this angle position, the first three-axis machining center unit 400 and the second three-axis machining center unit 500 return the workpiece to the set position; the clamping mechanisms 327 on both sides of the support unit 300 move in opposite directions, wedge apart, and the bracket falls into place; the first tumbling unit 100 and the second tumbling unit 200 synchronously drive the workpiece to rotate 90° in the opposite direction, so that the workpiece is in a horizontal position; the first tumbling unit 100 and the second tumbling unit 200 release the workpiece.

[0060] Specifically, in this embodiment, the first tumbling unit 100 and the second tumbling unit 200 are synchronously coupled and start / stop with a single button, ensuring that the two ends of the heavy truck's longitudinal beam rotate simultaneously without angular deviation. Multiple support units 300 are installed in the suspended portion of the workpiece between the left and right tumbling power units to ensure multi-point support, lifting, or clamping, thereby improving the system rigidity during workpiece processing. The first three-axis machining center unit 400 and the second three-axis machining center unit 500 each use separate CNC systems for control and adjustment, while the first tumbling unit 100 and the second tumbling unit 200 share a single CNC system for control and adjustment. A total of three CNC systems are used, and these three systems maintain interoperability through network interfaces and related communication protocols. Autonomous control software enables individual motion control, real-time communication between systems, safety interlocking, and remote one-button operation. The main control area is designed according to ergonomics and material handling principles, further reducing labor intensity.

[0061] This embodiment also provides a processing method for a heavy-duty truck longitudinal beam rolling processing device. The workflow is as follows: Manually load and unload workpieces on the first rolling unit 100 and the second rolling unit 200, and clean the positioning surface (workpiece horizontal is the initial position, the same as the workpiece hoisting angle); press the workpiece positioning start button on the operating table; the workpiece is automatically pushed to the predetermined position, the pressure detection is in place, and the workpiece positioning light illuminates (workpiece horizontal posture); manually, the universal joint on the second rolling unit 200 connects to the tail of the workpiece; press the workpiece locking start button on the operating table; the workpiece reference is moved by the first rolling unit 100 and the second rolling unit 200, automatically pushing and clamping; the workpiece... The tail end is automatically tightened and clamped by the second tumbling unit 200; the workpiece middle support unit 300 rises into position, and the wedge clamping cylinder is activated; all detections are in place, and the workpiece clamping light illuminates; both the positioning light and the clamping light illuminate, and the two safety confirmation buttons are pressed to enter the program running state (if a single button is pressed or neither light illuminates, the machine will not enter the automatic machining state); the first three-axis machining center unit 400 and the second three-axis machining center unit 500 quickly move to the program-set position; the tool magazine automatically selects the program-set tool, and the machine enters the program automatic machining state; the machining program for that angle position is completed; the first three-axis machining center unit 400 and the second three-axis machining center unit 500... 0. Quickly retract to the program-set position to avoid workpiece rotation; the wedge clamp of support unit 300 separates, the bracket falls into place and is detected; the first tumbling unit 100 and the second tumbling unit 200 CNC synchronously drive the workpiece to rotate 90° (workpiece stands upright); the bracket of support unit 300 rises, wedges into place and is detected; the two side clamping mechanisms of support unit 300 move towards each other into place and are detected; the first three-axis machining center unit 400 and the second three-axis machining center unit 500 quickly move again to the program-set position; the tool magazine automatically selects the program-set tool and enters the automatic machining state; the first three-axis machining center unit 400 and the second three-axis machining center unit 500... The machining program for the specified angle position is completed by the 500th cycle; the first three-axis machining center unit 400 and the second three-axis machining center unit 500 quickly retract to the program-set position; the two clamping mechanisms on both sides of the support unit 300 move in opposite directions and are checked; the wedges of the support unit 300 separate, the bracket falls to the position and is checked (to avoid the rotation of the workpiece); the first tumbling unit 100 and the second tumbling unit 200 synchronously drive the workpiece to rotate 90° in the opposite direction (the workpiece changes from upright to horizontal); the clamps on the first tumbling unit 100 and the second tumbling unit 200 move, release the workpiece, and are checked; the alarm light (flashing yellow light) and the buzzer sound to remind the operator, completing one work cycle.

[0062] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications and improvements made by those skilled in the art without departing from the inventive concept of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A heavy-duty truck longitudinal beam roll-over processing device, characterized in that, The system includes a first tumbling unit (100), a second tumbling unit (200), a support unit (300), a first three-axis machining center unit (400), and a second three-axis machining center unit (500). The first tumbling unit (100) and the second tumbling unit (200) are respectively disposed at both ends of the workpiece in a first direction and can drive both ends of the workpiece to rotate at the same angle. The support unit (300) is disposed between the first tumbling unit (100) and the second tumbling unit (200) and can support the workpiece at different rotation angles. The first three-axis machining center unit (400) and the second three-axis machining center unit (500) are respectively disposed on both sides of the workpiece and can move along the first direction to process different positions of the workpiece.

2. The heavy-duty truck longitudinal beam roll-over processing device according to claim 1, characterized in that, The first tumbling unit (100) and the second tumbling unit (200) both include a first base (11), a transmission power box (12), a drive assembly (13), and a clamp bracket (14). The transmission power box (12) is mounted on the first base (11). The drive assembly (13) is connected to the transmission power box (12), and its power output end is connected to the clamp bracket (14). The clamp bracket (14) is located on one side of the transmission power box (12) and is used to fix the end of the longitudinal beam. The drive assembly (13) on the first tumbling unit (100) and the second tumbling unit (200) can drive the two ends of the longitudinal beam to rotate synchronously.

3. The heavy-duty truck longitudinal beam roll-over processing device according to claim 1, characterized in that, The support unit (300) includes a second base (322), a lifting mechanism, and a frame (325). The bottom end of the lifting mechanism is connected to the second base (322), and the top end of the lifting mechanism is connected to the frame (325). The lifting mechanism can drive the frame (325) to move up and down relative to the second base (322). The frame (325) has an upward-facing placement slot (3253) in the middle. A first support mechanism (328) is provided at the top end of the frame (325), and a second support mechanism (329) is provided on the bottom surface of the placement slot (3253). A clamping mechanism (327) is provided on the frame (325), and the clamping mechanism (327) can clamp the workpiece placed in the placement slot (3253).

4. The heavy-duty truck longitudinal beam roll-over processing device according to claim 3, characterized in that, The frame (325) includes a left frame (3251) and a right frame (3252). The left frame (3251) and the right frame (3252) are symmetrically arranged about the center line of the frame (325), and the lower end of the left frame (3251) and the lower end of the right frame (3252) are connected by a connecting part (3254). The placement slot (3253) is disposed between the left frame (3251) and the right frame (3252) on the upper side of the connecting part (3254). The clamping mechanism (327) includes two lateral drive members (3272) and two hinged pressure plates (3271). The two lateral drive members (3272) are respectively disposed on the left frame (3251) and the right frame (3252) with their output ends facing each other. The hinged pressure plate (3271) is connected to the output end of the lateral drive member (3272). The lateral drive member (3272) can drive the hinged pressure plate (3271) to extend into the placement slot (3253).

5. The heavy-duty truck longitudinal beam roll-over processing device according to claim 4, characterized in that, The support unit (300) further includes a wedge mechanism (326), which includes a wedge block (3263) and a wedge groove (3264). A snap-fit ​​plate (3262) is provided on the same side of both the left frame (3251) and the right frame (3252), and the wedge groove (3264) is formed between the two snap-fit ​​plates (3262). The wedge block (3263) is driven by a lifting drive component (…). 3261) is connected to the second base (322), the wedge block (3263) is adapted to the wedge groove (3264) and embedded in the wedge groove (3264); the wedge block (3263) is trapezoidal platform-shaped, the wedge groove (3264) is trapezoidal groove-shaped with the upper opening smaller than the lower opening, and the wedge block (3263) can be embedded in the wedge groove (3264) from the lower side.

6. The heavy-duty truck longitudinal beam roll-over processing device according to claim 5, characterized in that, The lifting mechanism includes a vertical drive component (324) and two guide rods (323). The bottom end of the vertical drive component (324) is connected to the second base (322), and the top end of the vertical drive component (324) is connected to the connecting part (3254) on the frame (325). The two guide rods (323) are symmetrically arranged on the left and right sides of the vertical drive component (324), and the bottom end of the guide rods (323) is connected to the second base (322). The upper end of (323) is slidably connected to the left frame (3251) or the right frame (3252); the vertical drive (324) and the two guide rods (323) are arranged on the same straight line, the lifting drive (3261) is arranged on the front side of the vertical drive (324), and the straight line of the lifting drive (3261) and the vertical drive (324) is perpendicular to the straight line of the vertical drive (324) and the two guide rods (323).

7. The heavy-duty truck longitudinal beam roll-over processing device according to claim 2, characterized in that, The drive assembly (13) includes a drive motor (131), a gear pair assembly (132), and a main shaft (133). The drive motor (131) is mounted on one side of the transmission power box (12), and its output shaft is connected to one end of the gear pair assembly (132). The other end of the gear pair assembly (132) is connected to the main shaft (133). The main shaft (133) extends out from the other side of the transmission power box (12) and is connected to the clamp bracket (14).

8. The heavy-duty truck longitudinal beam roll-over processing device according to claim 7, characterized in that, A first pull rod (134) is provided inside the main spindle (133). The first pull rod (134) is coaxially arranged with the main spindle (133). The output end of the first pull rod (134) extends out of the main spindle (133) and is provided with a limiting part (1341) at its output end. The limiting part (1341) is connected to the fixture bracket (14). Alternatively, a second pull rod (135) is provided inside the main spindle (133). The second pull rod (135) is coaxially arranged with the main spindle (133). The output end of the second pull rod (135) extends out of the main spindle (133) and is connected with a universal joint (137) for connecting with the workpiece at its output end. The input section of the second pull rod (135) is connected to the tensioning cylinder (136).

9. The heavy-duty truck longitudinal beam roll-over processing device according to claim 1, characterized in that, It also includes a ground rail (5), on the upper side of the ground rail (5) there is a guide groove (51) arranged along its length direction, and an adjustable pad (6) is provided on the bottom side of the ground rail (5) and is fixedly connected to the foundation through the adjustable pad (6). The first tumbling unit (100), the second tumbling unit (200) and the support unit (300) are adjustable and connected to the guide groove (51).

10. A processing method for the heavy truck longitudinal beam rollover processing device according to any one of claims 1-9, characterized in that, Includes the following steps: Workpieces are loaded and unloaded on the first tumbling unit (100) and the second tumbling unit (200), and the positioning surfaces are cleaned. The initial position of the workpiece is horizontal. The two ends of the workpiece are connected and locked to the first tumbling unit (100) and the second tumbling unit (200) respectively. The support unit (300) is raised into position and wedged into place to support the horizontal workpiece. The first three-axis machining center unit (400) and the second three-axis machining center unit (500) move into position on both sides of the workpiece and then process the workpiece. After the processing at this angle position is completed, the first three-axis machining center unit (400) and the second three-axis machining center unit (500) move the workpiece back to the set position. The support unit (300) wedges apart and falls into place. The first tumbling unit (100) and the second tumbling unit (200) synchronously drive the workpiece back. Rotate 90° to bring the workpiece into an upright position; the support unit (300) bracket rises and wedges into place, and the two-sided clamping mechanisms (327) clamp the two sides of the workpiece; the first three-axis machining center unit (400) and the second three-axis machining center unit (500) move into place on both sides of the workpiece and process the workpiece; after completing the processing at this angle position, the first three-axis machining center unit (400) and the second three-axis machining center unit (500) return the workpiece to the set position; the two-sided clamping mechanisms (327) of the support unit (300) move in opposite directions, wedge apart, and the bracket falls into place; the first tumbling unit (100) and the second tumbling unit (200) synchronously drive the workpiece to rotate 90° in the opposite direction to bring the workpiece into a horizontal position; the first tumbling unit (100) and the second tumbling unit (200) release the workpiece.

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