A manufacturing equipment and manufacturing method suitable for the curved side wall of the motor vehicle driver's cab

Abstract

The present invention provides a manufacturing equipment suitable for the curved side wall of the driver's cab of a motor vehicle, which belongs to the technical field of train side wall production, and includes a base, a first fetal position system, a second fetal position system, a track control system, a floating vacuum suction cup, a jacking mechanism, a clamping mechanism and a welding device. The first fetal position system and the second fetal position system are respectively arranged above the base; the track control system is arranged on the upper end surface of the base; a plurality of floating vacuum suction cups are respectively arranged on the first fetal position system and the second fetal position system; a plurality of jacking mechanisms are arranged on the base; a plurality of clamping mechanisms are arranged on the first fetal position system and the second fetal position system; and the welding equipment is used to weld the relative welds of the curved side wall components of the driver's cab. The present invention also provides a manufacturing method suitable for the curved side wall of the driver's cab of a motor vehicle. The manufacturing equipment suitable for the curved side wall of the driver's cab of a motor vehicle provided by the present invention can ensure that no significant deformation occurs during welding, and has a simple structure and improved efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of train side wall production, and more specifically, relates to a manufacturing equipment and a manufacturing method suitable for a curved side wall of a motor vehicle driver's cab. Background Art

[0002] Traditionally, the cab side wall welding is manual arc welding. As arc welding has a high adaptability to gaps, this reduces the accuracy of the structural parts assembly process to a certain extent.

[0003] The driver's cab of a motor vehicle is mostly designed in a "streamlined" style, which requires high precision of contour dimensions. Since it is a three-dimensional curved surface structure, it is difficult to adjust after welding. The traditional arc welding method has a large amount of deformation after welding, making it difficult to design a long weld. At the same time, it requires the configuration of complex tooling to suppress the deformation after welding. Complex tooling will cause more interference and low welding efficiency. Summary of the invention

[0004] The purpose of the present invention is to provide a manufacturing equipment suitable for the curved side wall of the driver's cab of a motor vehicle, aiming to solve the problem that the traditional arc welding method has a large amount of deformation after welding, making it difficult to design a long and long weld, and at the same time requires the configuration of complex tooling to suppress the deformation after welding. Complex tooling will cause more interference and low welding efficiency.

[0005] To achieve the above object, the technical solution adopted by the present invention is: to provide a manufacturing equipment suitable for the curved side wall of the motor vehicle driver's cab, comprising:

[0006] A base, wherein a first fetal position system and a second fetal position system for supporting the curved side wall components of the driver's cab are respectively arranged above the base, the first fetal position system and the second fetal position system are arranged in sequence along the width direction of the base, and the first fetal position system is slidably arranged along the width direction of the base;

[0007] A track control system, disposed on the upper end surface of the base, for driving the first fetal position system to approach or move away from the second fetal position system;

[0008] A plurality of floating vacuum suction cups are respectively arranged on the first fetal position system and the second fetal position system along the length and width direction of the base, and the plurality of floating vacuum suction cups are automatically adjusted to match different side wall contours;

[0009] A plurality of tightening mechanisms are provided on the base and are arranged at intervals along the length direction of the base, and the plurality of tightening mechanisms are used to press the first fetal position system against one side of the second fetal position system;

[0010] A plurality of pressing mechanisms are respectively arranged on the first fetal position system and the second fetal position system, and are used to press the curved side wall components of the driver's cab on the first fetal position system and the second fetal position system respectively;

[0011] The welding equipment is used for processing and welding the relative welds of the curved side wall components of the driver's cab respectively pressed on the first tire position system and the second tire position system.

[0012] As another embodiment of the present application, the welding equipment is a friction stir welding equipment, and the friction stir welding equipment includes a mounting seat connected to the main shaft, and the mounting seat can switch to install a milling cutter head, a grinding tool or a stirring head.

[0013] As another embodiment of the present application, the first fetal position system and the second fetal position system are further provided with liftable positioning pins, and the positioning pins are used to be plugged and matched with the positioning holes on the curved side wall components of the driver's cab.

[0014] As another embodiment of the present application, the tightening mechanism includes a plurality of longitudinally arranged support rods, the upper ends of the support rods are provided with threaded sleeves, the axial direction of the threaded sleeves is perpendicular to the axial direction of the support rods, and the threaded sleeves are internally threadedly connected to a threaded push rod.

[0015] As another embodiment of the present application, the clamping mechanism includes a connecting base, a connecting arm, a pressure claw and a driving rod. The connecting base is fixed on the base, the middle part of the connecting arm is hinged to the upper end of the connecting base, the driving rod is hinged to one end of the connecting arm, and the pressure claw is arranged at the other end of the connecting arm.

[0016] As another embodiment of the present application, the connecting arm includes a long connecting arm and a short connecting arm connected in sequence, the middle part of the short connecting arm is hinged to the upper end of the connecting base, the pressure claw is arranged at the end of the long connecting arm, and the driving rod is hinged on the short connecting arm.

[0017] The beneficial effect of the manufacturing equipment for the curved side wall of the motor vehicle driver's cab provided by the present invention is that: compared with the prior art, the manufacturing equipment for the curved side wall of the motor vehicle driver's cab provided by the present invention respectively installs two curved side wall components of the driver's cab to be welded on the first position system and the second position system, and absorbs and presses the multiple curved side wall components of the driver's cab on the first position system and the second position system respectively through multiple floating vacuum suction cups and multiple clamping mechanisms, uses a track control system to control the first position system to approach the second position system, so that the curved side wall components of the driver's cab on the first position system and the curved side wall components of the driver's cab on the second position system fit each other, and fixes the curved side wall components of the driver's cab by multiple clamping mechanisms, and uses welding equipment to weld the mutually fitting area to form a long weld. It can ensure that the curved side wall components of the driver's cab will not be greatly deformed during welding, and the structure is simple, which improves the efficiency of welding.

[0018] The present invention also provides a method for manufacturing a curved side wall of a motor vehicle driver's cab, comprising the following steps:

[0019] S1: Input the three-dimensional model of the curved side wall components of the two cabs, and operate the hydraulic cylinder of the floating vacuum suction cup to realize the contour function of the overall floating vacuum suction cup, so that it forms the same curved surface as the side wall panel;

[0020] S2: hoisting two cab curved side wall components onto the curved surface, placing positioning pins into positioning holes on the components, and respectively adsorbing and pressing the two cab curved side wall components onto the first position system and the second position system by running floating vacuum suction cups and a clamping mechanism, and fixing them with a clamping mechanism, and milling the two cab curved side wall components at the positions to be welded relative to each other;

[0021] S3: moving the first position system together with the cab curved side wall component on top thereof to the positions to be welded of the two cab curved side wall components, and welding the positions to be welded;

[0022] S4: Grinding the welding areas of the two cab curved side wall components;

[0023] S5: After canceling the positioning pin, closing the floating vacuum suction cup and canceling the clamping mechanism, lift the curved side wall component of the driver's cab and move it out of the first fetal position system and the second fetal position system.

[0024] As another embodiment of the present application, the control system controls the friction stir welding equipment to switch the milling tool, the stirring head and the grinding tool to complete the milling, welding and grinding processing, wherein the first position system and the second position system match the curved side walls of the driver's cab with different structures through floating vacuum suction cups to correspond to the processing and welding requirements of different processes.

[0025] The present invention provides a manufacturing method suitable for the curved side wall of a motor vehicle driver's cab, which can effectively solve the problems of complex manufacturing process and low yield of the curved side wall of the driver's cab. Through the milling-welding-grinding manufacturing process, the problems of wall panel deformation and low assembly accuracy caused by tire changing and hoisting can be avoided, and the machining jitter and welding deformation are greatly reduced, thereby ensuring the contour dimensional accuracy of the component and the qualified rate of the finished product, and finally obtaining a low-deformation, high-stability driver's cab curved side wall structural component. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 A schematic diagram of the structure of a manufacturing equipment suitable for a curved side wall of a motor vehicle driver's cab provided by an embodiment of the present invention;

[0028] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0029] Figure 3 for Figure 1 A partial enlarged view of point B in the middle;

[0030] Figure 4 for Figure 1 A partial enlarged view of point C in the middle;

[0031] Figure 5 A schematic structural diagram of an overall and related control system of a manufacturing equipment suitable for a curved side wall of a motor vehicle driver's cab provided in an embodiment of the present invention.

[0032] In the figure: 100, base; 110, track; 200, first fetal position system; 300, second fetal position system; 400, jacking mechanism; 410, support rod; 420, threaded sleeve; 430, threaded push rod; 500, clamping mechanism; 510, connecting base; 520, connecting arm; 521, connecting long arm; 522, connecting short arm; 530, pressing claw; 540, driving rod; 600, positioning pin; 700, welding equipment; 800, floating vacuum suction cup; 900, track control system. DETAILED DESCRIPTION

[0033] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0034] See also Figures 1 to 5 Now, a manufacturing equipment for the curved side wall of the motor vehicle driver's cab provided by the present invention is described. A manufacturing equipment for the curved side wall of the motor vehicle driver's cab includes a base 100, a first position system 200, a second position system 300, a track control system 900, a floating vacuum suction cup 800, a tightening mechanism 400, a pressing mechanism 500 and a welding device 700.

[0035] The first fetal position system 200 and the second fetal position system 300 for supporting the curved side wall components of the driver's cab are respectively arranged above the base 100. The first fetal position system 200 and the second fetal position system 300 are arranged in sequence along the width direction of the base 100, and the first fetal position system 200 is slidably arranged along the width direction of the base 100; the track control system 900 is arranged on the upper end surface of the base 100, and is used to drive the first fetal position system 200 to approach or move away from the second fetal position system 300; a plurality of floating vacuum suction cups 800 are respectively arranged on the first fetal position system 200 and the second fetal position system 300 along the length and width direction of the base 100, and a plurality of floating vacuum suction cups 800 is self-adjusting for matching different side wall contours; a plurality of tightening mechanisms 400 are arranged on the base 100 and are arranged at intervals along the length direction of the base 100, and the plurality of tightening mechanisms 400 are used to press the first fetal position system 100 against one side of the second fetal position system 200; a plurality of pressing mechanisms 500 are respectively arranged on the first fetal position system 200 and the second fetal position system 300, and are used to press the curved side wall components of the driver's cab onto the first fetal position system 200 and the second fetal position system 300 respectively; the welding equipment 700 is used to weld the relative welds of the curved side wall components of the driver's cab respectively pressed onto the first fetal position system 200 and the second fetal position system 300.

[0036] The present invention provides a manufacturing equipment suitable for the curved side wall of the driver's cab of a motor vehicle. Compared with the prior art, two curved side wall components of the driver's cab to be welded are respectively installed on the first position system 200 and the second position system 300, and multiple floating vacuum suction cups 800 and multiple clamping mechanisms 500 are used to absorb and clamp multiple curved side wall components of the driver's cab on the first position system 200 and the second position system 300, respectively, and a track control system 900 is used to control the first position system 200 to approach the second position system 300, so that the curved side wall components of the driver's cab on the first position system 200 and the curved side wall components of the driver's cab on the second position system 300 are mutually fitted, and the curved side wall components of the driver's cab are fixed by multiple clamping mechanisms 400, and the mutually fitted area is welded by a welding device 700 to form a long weld. The use of the clamping mechanism 500 and the clamping mechanism 400 can ensure that the curved side wall components of the driver's cab will not be greatly deformed during welding, and the structure is simple, thereby improving the efficiency of welding.

[0037] The track control system 900 includes a plurality of tracks 110, which are arranged at intervals on the upper end surface of the base 100. A plurality of guide slides are connected to the lower part of the first fetal position system 200. The guide slides and the tracks 110 are arranged correspondingly. The number and position of the guide slides and the tracks 110 can be adjusted appropriately to ensure the stable movement of the first fetal position system 200 of different sizes. The track control system 900 can realize the control movement of the tracks 110 and the guide slides, so as to realize the automatic movement of the first fetal position system 200 to the side of the second fetal position system 300. At least two bearing bases are installed at the lower part of the guide slides, and the lower end surface of each bearing base is provided with a slide groove matching the guide rail. Each bearing base has four fixing bolt holes, and each bearing base is connected to the control system in the hydraulic pump and the electrical cabinet to realize the precise movement of multiple sets of bearing bases, with a moving accuracy of 0.02mm, which can realize the precise movement of the first fetal position system 200. Preferably, there are three tracks 110, which are respectively located in the middle and on both sides of the base 100, and there are also three guide slides and tracks 110 correspondingly arranged, and the specific positions and quantities can be adjusted. Similarly, a plurality of stable bases are also arranged at the bottom of the second fetal position system 300, and the second fetal position system 300 is directly connected to the base 100 through the stable bases, and the number of stable bases is 3, which are respectively located in the middle and on both sides of the second fetal position system 300.

[0038] The floating vacuum suction cup 800 is installed on the fetal position base. The floating vacuum suction cup 800 is composed of multiple suction cup units. The lower part of each suction cup unit is connected to a precise hydraulic cylinder and placed inside the fetal position base. The multiple hydraulic cylinders will drive the multiple suction cup units to rise and fall according to the size of the curved surface of the driver's cab side wall, so that they form a curved surface identical to the curved side wall of the driver's cab. Then, the components are hoisted onto the curved surface, so that the curved surface of the curved side wall of the driver's cab can fit closely with the multiple floating vacuum suction cups 800. Multiple hydraulic cylinders are used to stabilize the curved side wall components of the driver's cab and maintain the curved surface profile size requirements. Due to the different lengths of the upper and lower side walls of the driver's cab, the lengths of the first fetal position system 200 and the second fetal position system 300 are different, and the length difference between the two is 2000mm. The vacuum cup has an area of ​​100mm×100mm, with a "U"-shaped groove embedded inside. There is a rubber sealing ring on the edge of the groove. After the air in the groove is vacuumed out, a suction force of 3500N can be obtained. Multiple hydraulic cylinders can realize the up and down movement of the vacuum cup along the Z direction, with a stroke of 400mm. The size of the fetal position base of the first fetal position system 200 is 7000mm×600mm, and the vacuum cups are evenly distributed on it. There are 3 rows distributed along the width direction, with each row spaced 100mm apart and 50mm away from the edge of the fetal position base. There are 23 rows distributed along the length direction, with each row spaced 200mm apart and 150mm away from the edge of the fetal position base.

[0039] As a specific embodiment of a manufacturing equipment for the curved side wall of the motor vehicle driver's cab provided by the present invention, the welding equipment 700 is a friction stir welding equipment, and the friction stir welding equipment includes a mounting seat connected to the main shaft, and the mounting seat can switch to install a milling cutter head, a grinding tool or a stirring head. In this embodiment, the friction stir welding equipment includes a protective shell, a main shaft, a mounting seat, an equipment control system and a program control system. The main shaft can realize rotation in the X direction and the Y direction, and can swing forward and backward, left and right, with a swing angle of ±30° and a swing angle of ±45°. The main shaft can provide a speed of 0-14000r / min, which meets the requirements of friction stir welding, milling and grinding. The mounting seat is fixed on the main shaft, and the two maintain the same central axis. The mounting seat exposes 200mm of the main shaft end face, and a hole slot and a fixing screw are opened in the center. The hole slot size matches the handle size of the stirring head, milling cutter head and grinding tool. After the fixing screw is tightened, the stirring head, milling cutter head and grinding tool are fixed on the mounting seat. Similarly, the central axis of the stirring head, milling cutter head and grinding tool is coaxial with the main shaft. During the movement of the friction stir welding equipment, the straightness deviation in the X and Y directions is ≤0.02mm per meter, and the deviation in the Z direction does not exceed 0.01mm per meter.

[0040] The milling program is input into the program control system, and the friction stir welding equipment is controlled through the equipment control system, which automatically goes to the tool library to equip the milling tool and executes the milling action.

[0041] The welding program is input into the program control system, and the stir friction welding equipment is controlled by the equipment control system. It automatically goes to the tool library to perform tool change, replaces the milling tool with the stirring head, and performs the welding action.

[0042] The milling program is input into the program control system, and the stir friction welding equipment is controlled by the equipment control system. It automatically goes to the tool library to perform tool change, replaces the stirring head with a grinding tool, and performs the grinding action.

[0043] As a specific implementation of the manufacturing equipment for the curved side wall of the motor vehicle driver's cab provided by the present invention, please refer to Figure 1 and Figure 4, the first fetal position system 200 and the second fetal position system 300 are also provided with a liftable positioning pin 600, which is used to be plugged into and matched with the positioning hole on the curved side wall component of the driver's cab. In this embodiment, a positioning rod is provided on the upper part of the positioning pin 600. When the curved side wall component of the driver's cab is hoisted onto the first fetal position system 200 and the second fetal position system 300, the positioning rod of the positioning pin 600 is inserted into the positioning hole on the curved side wall component of the driver's cab through a lifting mechanism (cylinder or electric push rod) (the positioning hole is cut and removed after the tire is removed) to achieve positioning. The diameter of the positioning rod is 20 mm, and the number is 2. When installing the positioning pin 600, it is necessary to avoid multiple clamping mechanisms 500. Similarly, positioning pins are distributed on the edge of the fetal position base, and the number of positioning pins can be adjusted to position the curved side wall of the driver's cab.

[0044] As a specific implementation of the manufacturing equipment for the curved side wall of the motor vehicle driver's cab provided by the present invention, please refer to Figure 1 and Figure 3 The tightening mechanism 400 includes a plurality of longitudinally arranged support rods 410, the upper ends of the support rods 410 are provided with threaded sleeves 420, the threaded sleeves 420 are axially perpendicular to the axial directions of the support rods 410, and the threaded sleeves 420 are internally threadedly connected with threaded push rods 430. In this embodiment, the threaded push rods 430 are provided with elastic ends at one end close to the first fetal position system 200, and with gripping blocks at the other end. When the first fetal position system 200 slides into place, the gripping blocks are rotated forward by hand, so that the elastic ends gradually abut against one side of the first fetal position system 200, so that the curved side wall components of the driver's cab on the first fetal position system 200 and the second fetal position system 300 fit closely, and the tightening mechanism 400 can ensure that the curved side wall components of the driver's cab of the first fetal position system 200 will not be offset during the welding process. When the first fetal position system 200 needs to slide outward, the holding block is rotated in the opposite direction so that the elastic end gradually leaves one side of the first fetal position system 200 and no longer presses the first fetal position system 200. Then, the first fetal position system 200 can slide out smoothly and away from the second fetal position system 300.

[0045] As a specific implementation of the manufacturing equipment for the curved side wall of the motor vehicle driver's cab provided by the present invention, please refer to Figure 1 and Figure 4The clamping mechanism 500 includes a connecting base 510, a connecting arm 520, a pressing claw 530 and a driving rod 540. The connecting base 510 is fixed on the base 100. The middle part of the connecting arm 520 is hinged to the upper end of the connecting base 510. The driving rod 540 is hinged to one end of the connecting arm 520. The pressing claw 530 is arranged at the other end of the connecting arm 520. In this embodiment, the clamping mechanism 500 is a linkage mechanism. The driving rod 540 is a hydraulic push rod. The hydraulic push rod is slowly lifted up under the thrust of the hydraulic cylinder. The hydraulic push rod drives one end of the connecting arm 520 to rise. By means of the hinged connection between the middle part of the connecting arm 520 and the connecting base 510, the pressing claw 530 at the other end of the connecting arm 520 is lowered. The pressing claw 530 is in a crescent shape. The lower end is made of high temperature resistant PVC material to protect the surface of the curved side wall component of the driver's cab and avoid scratches. In the working state, the hydraulic cylinder can provide sufficient thrust for the clamping mechanism 500 to ensure that there is sufficient pressure at the position of the pressure claw 530. In the non-working state, the hydraulic cylinder drives the hydraulic push rod to contract, so that the pressure claw 530 of the connecting arm 520 is lifted, and the connecting arm 520 can be 90 degrees with the tire base, so that the curved side wall of the driver's cab can be taken out after welding.

[0046] The width of the connecting base 510 is 200 mm, the center distance between two adjacent connecting bases 510 is 300 mm, and the number is 23 (on one side). Among them, the number and gaps of the connecting bases 510 can be adjusted to ensure the processing and welding of curved side walls of driver's cabs of different sizes.

[0047] As a specific embodiment of a manufacturing equipment for the curved side wall of the motor vehicle driver's cab provided by the present invention, the connecting arm 520 includes a connecting long arm 521 and a connecting short arm 522 connected in sequence, the middle part of the connecting short arm 522 is hinged to the upper end of the connecting base 510, the pressing claw 530 is arranged at the end of the connecting long arm 521, and the driving rod 540 is hinged on the connecting short arm 522. In this embodiment, the connecting short arm 522 is located on the side close to the driving rod 540, the length of the connecting long arm 521 is 500mm, the length of the connecting short arm 522 is 350mm, the overlapping position of the two is connected by four bolts, the overlapping length is 100mm, and the connecting short arm 522 is hinged on the rotating shaft at the upper end of the connecting base 510. Using the principle of leverage, the pressing claw 530 at the end of the connecting long arm 521 is driven to press or loosen the curved side wall component of the driver's cab. Preferably, the oil hydraulic cylinder can provide an upward thrust of 3500N for the connecting short arm 522, and it has been measured that the pressure provided by the pressing claw 530 at the end of the connecting long arm 521 is about 3700N.

[0048] The present invention also provides a method for manufacturing a curved side wall of a motor vehicle driver's cab, comprising the following steps:

[0049] S1: input the three-dimensional model of the curved side wall components of the two cabs, operate the hydraulic cylinder of the floating vacuum suction cup 800 to realize the profiling function of the overall floating vacuum suction cup 800, so that it forms the same curved surface as the side wall panel;

[0050] S2: hoist two cab curved side wall components onto the curved surface, place the positioning pins 600 into the positioning holes on the components, and fix the two cab curved side wall components on the first position system 200 and the second position system 300 respectively by running the floating vacuum suction cup 800 and the clamping mechanism 500, and fix them with the clamping mechanism 400, and mill the relative welding positions of the two cab curved side wall components;

[0051] S3: moving the first fetal position system 200 together with the cab curved side wall component on top thereof to the positions to be welded of the two cab curved side wall components, and welding the positions to be welded;

[0052] S4: Grinding the welding areas of the two cab curved side wall components;

[0053] S5: After canceling the positioning pin 600, closing the floating vacuum suction cup 800 and canceling the clamping mechanism 500, the curved side wall component of the driver's cab is lifted and moved out of the first fetal position system 200 and the second fetal position system 300.

[0054] As a specific implementation of a manufacturing equipment suitable for the curved side wall of a motor vehicle driver's cab provided by the present invention, the control system controls the stir friction welding equipment to switch the milling tool, the stirring head and the grinding tool to complete the milling, welding and grinding processing, wherein the first position system 200 and the second position system 300 match the curved side walls of the driver's cab of different structures through the floating vacuum suction cup 800, so as to correspond to the processing and welding requirements of different processes.

[0055] The method for manufacturing the curved side wall of the motor vehicle driver's cab is as follows:

[0056] First, after inputting the three-dimensional model of the component into the terminal computer system on the electrical cabinet, the track control system 900 is started, and the three slide rails are linked simultaneously to slowly move the fetal position base of the first fetal position system 200. When the distance between the opposite ends of the first fetal position system 200 and the second fetal position system 300 reaches 500 mm, the first fetal position system 200 no longer moves, and the precise hydraulic cylinder under the floating vacuum suction cup 800 is operated. The precise hydraulic cylinder will lift and lower the floating vacuum suction cup 800 according to the curved surface size of the driver's cab side wall to form a contoured curved surface with the two driver's cab side wall curved surface components, so that it forms a curved surface identical to the side wall panel. Then, the driver's cab curved side wall component is hoisted onto the curved surface, and the positioning pin 600 is placed into the positioning hole on the component (the positioning hole is cut off after the tire is produced), and the component to be welded is pushed from one side to make it fit with the positioning pin 600 on the other side. The air in the floating vacuum suction cup 800 is pumped out to make the component fit tightly against the floating vacuum suction cup 800, and the plurality of clamping mechanisms 500 are slowly lowered (in the non-working state, the clamping mechanisms 500 form an angle of 90° with the fetal base), and the pressing claws 530 press the component onto the floating vacuum suction cup 800.

[0057] After the machining program is input by the program control system and transmitted to the equipment control system, the multifunctional stir friction welding equipment is started. The equipment will automatically go to the tool library to equip the machining tool, and then move to the edge of the base material to be welded on the first position system 200 to perform milling on the base material to be welded. The spindle speed is 6000r / min, the travel speed is 2000mm / min, the spindle angle is adjusted as the curved surface changes, and the adjustment degree is controlled by the machining program. Along the length direction of the first position system 200, the stir friction welding equipment is repeatedly moved three times to perform milling on the upper, lower and side edges of the base material to be welded. The milling width of the upper and lower surfaces is 20mm. Similarly, the stir friction welding equipment then moves to the edge of the base material to be welded on the second position system 300 to perform milling on the upper, lower and side edges of the base material to be welded, respectively.

[0058] After machining is completed, the track control system 900 is started again, and the three slide rails are linked at the same time to slowly move the position base of the first position system 200, so that the two sections of the base material to be welded are connected to a seamless state, and the high-precision track control system 900 is closed and the tightening mechanism 400 is tightened. Subsequently, the welding program is input by the program control system and transmitted to the equipment control system. The multifunctional friction stir welding equipment is started again, first performing the tool change action, going to the tool library to replace the stirring head, and then moving back to the center of the weld for welding. At the beginning of welding, the stirring head speed is 400r / min, the feed distance is 100mm, and the welding speed is increased from 0 to 400mm / min. When the stirring needle completely enters the weld, the welding is completed with the welding parameters of a welding speed of 400mm / min and a spindle speed of 400r / min. The spindle adjusts the angle as the curved surface changes, and the degree of adjustment is controlled by the machining program. After welding is completed, the main machine stops rotating and lifts up, and resets to the starting point of the friction stir welding equipment.

[0059] After welding is completed, the grinding program is input into the program control system and transmitted to the equipment control system. The multifunctional friction stir welding equipment is started and goes to the tool library to replace the fine grinding tool. The blade diameter is 165mm, and the tool can achieve fine grinding with a width of 30mm. Then the friction stir welding equipment moves to the center of the weld, and the spindle rotates at a speed of 10000r / min and a feed speed of 2100mm / min. The surface is ground along the weld. After grinding is completed, the friction stir welding equipment stops rotating and resets.

[0060] Finally, slowly move the positioning pin 600 out of the positioning hole. After the positioning pin 600 is completely moved out, control the electrical cabinet to slowly lift the multiple clamping mechanisms 500 to a 90° angle with the horizontal plane, open the air intake valve, and wait for the air to fill the groove on the vacuum suction cup before using the overhead crane to complete the removal of the curved side wall of the driver's cab.

[0061] The present invention provides a manufacturing method suitable for the curved side wall of the driver's cab of a motor vehicle, which can effectively solve the problems of complex manufacturing process and low yield of the curved side wall of the driver's cab, and simplifies the manufacturing process with the help of "machining-welding-polishing" integrated equipment, thereby avoiding problems such as wall panel deformation and low assembly accuracy caused by tire change and hoisting. The first tire position system 200 and the second tire position system 300 cooperate with multiple clamping mechanisms 400 and multiple clamping mechanisms 500 to greatly reduce machining jitter and welding deformation, ensure the contour dimensional accuracy of the component and the qualified rate of the finished product, and finally obtain a low-deformation, high-stability driver's cab curved side wall structural component.

[0062] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A manufacturing equipment suitable for the curved side wall of a motor vehicle driver's cab, characterized in that: include: A base, wherein a first fetal position system and a second fetal position system for supporting the curved side wall components of the driver's cab are respectively arranged above the base, the first fetal position system and the second fetal position system are arranged in sequence along the width direction of the base, and the first fetal position system is slidably arranged along the width direction of the base; A track control system, disposed on the upper end surface of the base, for driving the first fetal position system to approach or move away from the second fetal position system; A plurality of floating vacuum suction cups are respectively arranged on the first fetal position system and the second fetal position system along the length and width direction of the base, and the plurality of floating vacuum suction cups are automatically adjusted to match different side wall contours; A plurality of tightening mechanisms are provided on the base and are arranged at intervals along the length direction of the base, and the plurality of tightening mechanisms are used to press the first fetal position system against one side of the second fetal position system; A plurality of pressing mechanisms are respectively arranged on the first fetal position system and the second fetal position system, and are used to press the curved side wall components of the driver's cab on the first fetal position system and the second fetal position system respectively; A welding device, used for welding the relative welds of the curved side wall components of the driver's cab respectively pressed on the first tire position system and the second tire position system; the welding device is a friction stir welding device, the friction stir welding device comprises a mounting seat connected to the main shaft, and the mounting seat can be switchably mounted with a milling cutter head, a grinding cutter or a stirring head; The jacking mechanism comprises a plurality of longitudinally arranged support rods, the upper ends of the support rods are provided with threaded sleeves, the axial direction of the threaded sleeves is perpendicular to the axial direction of the support rods, and the threaded sleeves are internally threadedly connected to threaded ejector rods; The clamping mechanism includes a connecting base, a connecting arm, a pressing claw and a driving rod. The connecting base is fixed on the base, the middle part of the connecting arm is hinged to the upper end of the connecting base, the driving rod is hinged to one end of the connecting arm, and the pressing claw is arranged at the other end of the connecting arm.

2. The manufacturing equipment for the curved side wall of the motor vehicle driver's cab as claimed in claim 1, characterized in that: The first fetal position system and the second fetal position system are also provided with liftable positioning pins, and the positioning pins are used to be plugged and matched with the positioning holes on the curved side wall components of the driver's cab.

3. The manufacturing equipment for the curved side wall of the motor vehicle driver's cab as claimed in claim 1, characterized in that: The connecting arm comprises a connecting long arm and a connecting short arm which are connected in sequence, the middle part of the connecting short arm is hinged to the upper end of the connecting base, the pressing claw is arranged at the end of the connecting long arm, and the driving rod is hinged to the connecting short arm.

4. A method for manufacturing a curved side wall of a motor vehicle driver's cab, characterized in that: The manufacturing equipment for the curved side wall of the motor vehicle driver's cab as claimed in any one of claims 1 to 3 is used, comprising the following steps: S1: Input the three-dimensional model of the curved side wall components of the two cabs, and operate the hydraulic cylinder of the floating vacuum suction cup to realize the contour function of the overall floating vacuum suction cup, so that it forms the same curved surface as the side wall panel; S2: hoisting two cab curved side wall components onto the curved surface, placing positioning pins into positioning holes on the components, and respectively adsorbing and pressing the two cab curved side wall components onto the first position system and the second position system by running floating vacuum suction cups and a clamping mechanism, and fixing them with a clamping mechanism, and milling the two cab curved side wall components at the positions to be welded relative to each other; S3: moving the first position system together with the cab curved side wall component on top thereof to the positions to be welded of the two cab curved side wall components, and welding the positions to be welded; S4: Grinding the welding areas of the two cab curved side wall components; S5: After canceling the positioning pin, closing the floating vacuum suction cup and canceling the clamping mechanism, lift the curved side wall component of the driver's cab and move it out of the first fetal position system and the second fetal position system.

5. A method for manufacturing a curved side wall of a motor vehicle driver's cab as claimed in claim 4, characterized in that: The control system controls the friction stir welding equipment to switch the milling tool, stirring head and grinding tool to complete the milling, welding and grinding processing. Among them, the first position system and the second position system use floating vacuum suction cups to match the curved side walls of the driver's cab with different structures to correspond to the processing and welding requirements of different processes.

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