Multi-station laser cutting device for cylindrical part

Abstract

The utility model relates to a multi-station laser cutting device for a cylindrical part, belongs to the technical field of cutting equipment, and aims to solve the technical problems that in the prior art, when a ventilation window is produced on a cylindrical part stator base, cutting heat exists in a manual cutting mode, so that the base is deformed; the appearance quality of cut products is poor, the manual production efficiency is low, and the production cost is high. The laser cutting device comprises a mounting assembly, a driving rotary table and a laser cutting assembly. The mounting assembly comprises a mounting frame and a mounting seat, the cylinder part is rotatably mounted on the mounting seat around the axis of the cylinder part through the mounting frame, and the power end of the driving rotary table is connected with the mounting frame to drive the mounting frame to rotate; the laser cutting assembly comprises a laser cutting gun and a moving assembly, and the laser cutting gun moves in the axis direction of the cylinder part through the moving assembly. The laser cutting device can replace manual cutting, the production efficiency is high, the appearance quality of finished products is good, manual subsequent grinding is reduced or not needed, the yield of cylindrical parts is high, and the production cost is low.

Description

Technical Field

[0001] This utility model relates to a multi-station laser cutting device for cylindrical parts, belonging to the technical field of cutting equipment. Background Technology

[0002] Semi-direct drive motors are medium-speed generators designed and developed by the wind power manufacturing industry to meet market demands, reduce wind power equipment costs, and facilitate industrial transformation and upgrading. Compared to permanent magnet direct drive generators, they are smaller, lighter, and require less rare earth elements in the permanent magnet. Under the same blade speed conditions as direct drive motors, the generator speed is increased by using a speed-up gearbox, thereby achieving the goal of generating more electricity.

[0003] As the operating speed of semi-direct drive motors increases, the heat generated during operation also increases, requiring heat dissipation through air cooling or water cooling. Therefore, the stator frame design of semi-direct drive motors incorporates multiple ventilation windows, using filters and a ventilation system to achieve the purpose of motor ventilation and cooling. Currently, the multiple ventilation windows in the stator frame are primarily manufactured using template marking and manual hand-held cutting with a torch.

[0004] The existing method of using template marking and manual cutting has several drawbacks. For example, when cutting multiple ventilation windows with a flame torch, the heat from the cutting can easily deform the outer cylinder of the machine base. Manually cut windows also result in poor edge quality, requiring manual grinding, leading to high labor intensity and a large workload, resulting in low production efficiency and high labor costs. Therefore, a multi-window cutting device for cylindrical parts is needed to solve the problems of machine base deformation caused by cutting heat, poor product appearance quality, low manual production efficiency, and high production costs associated with the manual cutting method used in the production of ventilation windows for cylindrical stator bases. Utility Model Content

[0005] The purpose of this invention is to provide a multi-station laser cutting device for cylindrical parts to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a multi-station laser cutting device for cylindrical parts, comprising a mounting assembly, a drive turntable, and a laser cutting assembly; the mounting assembly includes a mounting frame and a mounting base, wherein the cylindrical part is rotatably mounted on the mounting base via the mounting frame around the axis of the cylindrical part, and the power end of the drive turntable is connected to the mounting frame to drive the mounting frame to rotate; the laser cutting assembly includes a laser cutting gun and a moving assembly, wherein the laser cutting gun moves along the axis of the cylindrical part via the moving assembly.

[0007] Preferably, the mounting bracket includes a mandrel, a turntable, and a retaining shaft; the mandrel is mounted on the inner side of the cylindrical component along the axis of the cylindrical component, and its two ends extend to the outer side of the cylindrical component to form two extended ends; a mounting plate is fixedly mounted on the shaft corresponding to the two end faces of the cylindrical component, and the mounting plate is provided with a fixing member for fixed connection with the cylindrical component; the turntable is mounted on the power end of the drive turntable; the retaining shaft is mounted on the mounting base at a distance from the turntable, and a rotating shaft is rotatably mounted on its end; one of the two extended ends of the mandrel is connected to the turntable by a key, and the other extended end abuts against the rotating shaft of the retaining shaft.

[0008] Preferably, the mounting base includes a first mounting base, a second mounting base, a third mounting base, and an axis adjustment assembly; the first and second mounting bases are installed at intervals relative to each other, forming a mounting cavity for the cylindrical component; the cylindrical component is installed in the mounting cavity with its axis arranged horizontally; a fixed shaft is installed on the first mounting base, and a drive turntable is installed on the second mounting base; the third mounting base is installed on the upper side of the cylindrical component for mounting the laser cutting assembly; the axis adjustment assembly is installed on the first mounting base for adjusting the alignment of the cylindrical component's axis with the turntable's rotation axis.

[0009] Preferably, the axis adjustment assembly includes a base, an adjusting bolt, a first slide, and a second slide. A first mounting base is installed on the base, and an adjusting threaded hole is provided on the first mounting base at a position corresponding to the base. The adjusting bolt is threadedly connected to the adjusting threaded hole, with one end extending to the outside of the adjusting threaded hole and abutting against the base, to adjust the radial height of the first mounting base. The first slide is fixedly installed on the first mounting base, and a first sliding plate is slidably mounted on it along the axis of the cylindrical component. The first sliding plate is driven by a first driving member. The second slide is fixedly installed on the first sliding plate, and a second sliding plate is slidably mounted on it in the horizontal direction perpendicular to the axis of the cylindrical component. The second sliding plate is driven by a second driving member. A fixed shaft is fixedly installed on the second sliding plate. The first and second driving members of this invention can be commonly used driving members in the prior art to drive the sliding motion of the slide, such as pneumatic, hydraulic, or electric driving members. To improve the accuracy of the sliding stroke of the slide, this invention preferably uses a servo motor to drive a ball screw pair to drive the sliding motion of the slide.

[0010] Preferably, the fixed shaft has an inwardly extending mounting groove on the side facing the cylindrical component, with a mounting hole at the bottom of the groove, and a cover plate covering the groove opening; the rotating shaft is rotatably mounted in the mounting groove via a first bearing and a second bearing, with one end extending to the outside of the cover plate to form a stop end; the first bearing is located in the mounting hole, and the second bearing is a load-bearing bearing, located near the cover plate; a shoulder is provided in the mounting groove corresponding to the second bearing, and the second bearing abuts against the shoulder on one side of its outer ring and against the cover plate on the other side to limit the axial movement of the rotating shaft; a locking bolt is installed on the rotating shaft on the side of the second bearing's inner ring away from the cover plate to adjust the bearing clearance; a lubrication hole is provided on the outer side of the fixed shaft corresponding to the second bearing to lubricate the second bearing; a dustproof component is provided on the cover plate corresponding to the second bearing.

[0011] Preferably, the shaft body facing the fixed shaft is recessed inward along the axis to form a first positioning groove; the rotating shaft of the fixed shaft protrudes outward at the position corresponding to the first positioning groove to form a first ejector pin; the rotating shaft is mounted in the first positioning groove through the first ejector pin and abuts against the shaft body; the shaft body facing the turntable protrudes outward along the axis to form a second ejector pin, and the position of the turntable corresponding to the second ejector pin is recessed inward to form a conical second positioning groove; the shaft body is mounted in the second positioning groove through the second ejector pin and abuts against the turntable; the shaft body of the shaft body located outside the second ejector pin has parallel keyways evenly distributed around the circumference, and a parallel key is fixedly installed at the position of the turntable corresponding to the internal spline; when the shaft body is connected to the turntable, a key fit is formed by installing the parallel key in the parallel keyway.

[0012] Preferably, the mounting plate has a mounting cylinder in the middle, and a number of reinforcing plates are evenly distributed around the outer side of the mounting cylinder along the circumference, and the inner side is fitted onto the mandrel; the mounting cylinder has a number of pin holes at intervals along the cylinder body, and the mandrel has through holes at positions corresponding to the pin holes, and the mounting plate is fixedly connected to the mandrel by connecting pins passing through the pin holes and through holes; the mounting cylinder is equipped with lifting components.

[0013] Preferably, the fastener includes several limiting blocks and a fixing plate. The limiting blocks are evenly distributed around the circumference of the mounting plate to form a limiting part whose shape is adapted to the end face of the cylindrical part. The fixing plate is rotatably mounted on the side of the limiting block, and a fixing bolt is provided on one side of the fixing plate to fix the cylindrical part to the mounting plate.

[0014] Preferably, the moving component includes a first guide rail, a second guide rail, a swing motor, and a drive motor; the first guide rail is aligned with the axis of the cylindrical component, the first guide rail and the second guide rail are perpendicular to each other, and a first slide plate is slidably mounted on the first guide rail and connected to the drive motor; the second guide rail is mounted on the first slide plate, and a second slide plate is slidably mounted on the second guide rail and connected to the drive motor; the laser cutting gun is mounted on the second slide plate via the swing motor and has a telescopic gun head.

[0015] Preferably, the mounting base is installed on the installation medium, which has a pit structure. The first mounting base and the second mounting base are respectively installed on both sides of the pit top, and the cylindrical component is installed in the pit. Beneficial effects

[0016] 1. This utility model comprises an installation assembly, a drive turntable, and a laser cutting assembly. The installation assembly includes a mounting frame and a mounting base. A cylindrical part is mounted on the mounting base via the mounting frame, rotating around its axis. The power end of the drive turntable is connected to the mounting frame to drive its rotation. A laser cutting gun moves along the axis of the cylindrical part, coordinating with the drive turntable to rotate the cylindrical part, allowing the laser cutting gun to cut the part according to cutting requirements, thus creating ventilation windows. This laser cutting device can replace manual cutting, reducing workload and improving production efficiency. Furthermore, using laser cutting instead of flame cutting improves the appearance quality of the finished cylindrical part, reduces or eliminates the need for subsequent manual grinding, and avoids deformation caused by heat during cutting. This utility model results in a high yield rate and low production cost for the cylindrical parts.

[0017] 2. Based on the foregoing, considering that the cylindrical component of this utility model is a semi-direct drive motor stator base, which is large in size and weight, in order to ensure the stable installation of the cylindrical component, the mounting frame of this utility model includes a mandrel. The mandrel is installed along the axis of the cylindrical component inside the cylindrical component, and its two ends extend to the outer side of the cylindrical component to form two extended ends. Mounting plates are fixedly installed on the shafts corresponding to the two end faces of the cylindrical component. The mounting plates are provided with fixing parts for fixed connection with the cylindrical component. This allows the cylindrical component to be connected to the mandrel as a whole by the mandrel being installed through the cylindrical component along the axis of the cylindrical component, with both ends extending to the outer side of the cylindrical component. By setting mounting plates at positions corresponding to the two end faces of the cylindrical component for fixed connection, the cylindrical component is connected to the mandrel as a whole through the mounting plates. At the same time, since the mandrel is set along the axis of the cylindrical component, when driven by the drive turntable, it can be ensured that the rotation of the cylindrical component is coaxial with the rotation of the mandrel, thereby improving the cutting accuracy.

[0018] 3. Building upon the foregoing, to ensure the alignment of the mandrel's rotation axis with that of the drive turntable, this invention employs a turntable and a set shaft. The turntable is fixedly mounted to the power end of the drive turntable, while the set shaft is mounted on a mounting base at a distance from the turntable, with a rotating shaft rotatably mounted at its end. One end of the mandrel's two extensions is connected to the turntable via a key, while the other end abuts against the set shaft's rotating shaft. This ensures the mandrel's rotation axis aligns with that of the drive turntable's power end. Furthermore, the set shaft's abutment against the mandrel provides fixation, limitation, and rapid positioning, enabling quick installation. This installation method, using the set shaft to abut the mandrel, ensures high installation accuracy and avoids the problem of accumulated installation errors reducing accuracy due to a large number of components.

[0019] 4. Building upon the foregoing, when changes in the dimensions of the cylindrical component lead to variations in the mandrel axis and the length of the cylindrical component, this invention addresses the need to ensure the mandrel is compatible with the rotation axis of the drive turntable. This is achieved by incorporating an axis adjustment assembly, including a base, adjusting bolts, a first slide, and a second slide, to adjust the fixing shaft horizontally and radially, ensuring its alignment with the rotation axis of the drive turntable. Specifically, the first mounting seat is mounted to the base via adjusting bolts, and the height of the first mounting seat is adjusted radially using the adjusting bolts. The first and second slides adjust the position of the first mounting seat in the horizontal plane along both the mandrel axis and perpendicular to the mandrel axis, adapting to cylindrical components of different dimensions. It is important to note that the position adjustment along the mandrel axis is not only applicable to adaptability adjustments when the cylindrical component's dimensions change, but also for driving the fixing shaft to hold the mandrel against the turntable, preventing displacement during cutting, ensuring stable installation of the cylindrical component, and improving cutting quality.

[0020] 5. Based on the foregoing, considering that the mandrel carrying the cylindrical component is abutted against the turntable by the fixed shaft, in order to ensure that the fixed shaft abuts against the mandrel along the axis and that the mandrel can rotate normally, this utility model provides an installation groove on the fixed shaft, through which a bearing is used to rotatably mount the rotating shaft. The bottom of the installation groove has an installation hole, and a cover plate covers the groove opening. The rotating shaft is rotatably mounted in the installation hole via a first bearing and rotatably mounted near the groove opening via a second bearing. Since the rotating shaft also abuts against the mandrel, the second bearing is a load-bearing bearing, preferably a double-row bearing. To ensure the stability of the second bearing, this utility model provides a shoulder and a cover plate within the installation groove to restrict the outer ring of the second bearing, preventing axial movement. A locking nut is provided on the rotating shaft to adjust the bearing clearance of the inner ring of the second bearing, ensuring stable operation. Furthermore, this utility model provides an oil lubrication hole on the fixed shaft and a dustproof component on the cover plate to extend the service life of the second bearing and reduce operating costs.

[0021] 6. Based on the foregoing, the mandrel of this invention has its shaft body facing the fixed shaft recessed inward along its axis to form a first positioning groove; the rotating shaft of the fixed shaft protrudes outward at the corresponding position of the first positioning groove to form a first ejector pin; the rotating shaft is mounted in the first positioning groove via the first ejector pin and abuts against the mandrel; the shaft body facing the turntable protrudes outward along its axis to form a second ejector pin, and the position of the turntable corresponding to the second ejector pin is recessed inward to form a conical second positioning groove. This achieves the mandrel abutting against the turntable through an ejector pin-type abutment method, ensuring stable contact between the mandrel and the turntable during cutting without displacement, and guaranteeing that the mandrel axis remains aligned with the turntable axis during rotation. Simultaneously, the ejector pin-type abutment method enables rapid positioning and installation of the fixed shaft, mandrel, and turntable, improving assembly efficiency and thus production efficiency. In addition, in order to ensure that the driving force of the drive turntable can be effectively transmitted to the spindle, this utility model adopts a keyway on the spindle and a flat key on the turntable to form a key-fit connection, so as to ensure that the driving force can be efficiently transmitted to the spindle.

[0022] 7. Based on the foregoing, the mounting plate and mandrel of this utility model adopt a split connection method. The mounting plate is provided with a mounting cylinder. By opening corresponding pin holes and through holes on the mounting cylinder and mandrel, the mounting plate and mandrel are fixedly connected by connecting pins. The installation cylinder also increases the installation area with the mandrel, thereby improving the installation stability between the two. To further improve the fixed connection between the mounting plate and the cylindrical component, this utility model provides limiting blocks and a fixing plate on the mounting plate. The limiting blocks are evenly distributed around the circumference of the mounting plate to form a limiting part that matches the shape of the end face of the cylindrical component, ensuring rapid positioning and installation of the cylindrical component to the mounting plate during installation. The fixing plate then fixes the cylindrical component to the mounting plate. This utility model uses a split connection method for the mounting frame to achieve rapid positioning and installation of the mounting frame and the cylindrical component, thereby reducing the difficulty of component installation and improving production efficiency.

[0023] 8. The stator base of the semi-direct drive motor of this utility model is a cylindrical structure. The ventilation windows that need to be opened are located on the side wall of the cylindrical component. Therefore, the actual ventilation windows are arc-shaped structures, and multiple ventilation windows are located at different positions on the cylindrical component. This utility model sets up a moving component, which includes a first guide rail, a second guide rail, a swing motor, and a drive motor. The laser cutting gun is slidably mounted on a third mounting base via the first and second guide rails, so that the position of the laser cutting gun can be adjusted horizontally in the front, back, left, and right directions to cut ventilation windows at different positions. During cutting, the rotation of the cylindrical component with the laser cutting gun can cut out arc-shaped ventilation windows. In order to ensure that the cutting direction of the gun head always maintains a certain angle with the cylindrical component, this utility model sets up a swing motor to drive the gun head to swing, thereby ensuring that the cutting angle remains consistent and improving the cutting quality.

[0024] 9. Based on the foregoing, the mounting base of this utility model is installed on the installation medium, which has a pit structure. The first mounting base and the second mounting base are respectively installed on both sides of the pit top, and the cylindrical component is installed in the pit. By installing the cylindrical component in the pit, the construction height is reduced, the installation space of the components is decreased, and the construction safety and convenience are ensured. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the multi-station laser cutting device for cylindrical parts in an embodiment.

[0026] Figure 2 This is a top view of the structure of the multi-station laser cutting device for cylindrical parts in this embodiment;

[0027] Figure 3 This is a side view of the structure of the multi-station laser cutting device for cylindrical parts in this embodiment;

[0028] Figure 4 The exploded view shows the mounting frame and the mounting structure of the cylindrical component in the multi-station laser cutting device for the embodiment.

[0029] Figure 5 This is a structural cross-sectional view of the fixed shaft of the multi-station laser cutting device for cylindrical parts, as shown in the embodiment. Detailed Implementation

[0030] The technical solution of this utility model will be described in detail below with reference to the accompanying drawings, but the scope of protection of this utility model is not limited to the embodiments.

[0031] Please see Figures 1-5This embodiment provides a multi-station laser cutting device for cylindrical parts, including a mounting assembly, a CNC drive turntable 12, and a laser cutting assembly. The mounting assembly includes a mounting frame and a mounting base. The cylindrical part A is rotatably mounted on the mounting base around the axis of the cylindrical part via the mounting frame. The power end of the CNC drive turntable 12 is connected to the mounting frame to drive the mounting frame to rotate. The laser cutting assembly includes a laser cutting gun 130 and a moving assembly. The laser cutting gun moves along the axis of the cylindrical part via the moving assembly.

[0032] The mounting frame in this embodiment includes a mandrel 11, a turntable 20, and a fixing shaft 7. The mandrel 11 is installed along the axis of the cylindrical component inside the cylindrical component, and its two ends extend to the outer side of the cylindrical component to form two extended ends. Mounting plates are fixedly installed on the shafts corresponding to the two end faces of the cylindrical component. The mounting plates are provided with fixing parts for fixed connection with the cylindrical component. The turntable 20 is installed on the power end of the CNC drive turntable. The fixing shaft 7 is installed on the mounting base at intervals relative to the turntable, and a rotating shaft 33 is rotatably installed at its end. One of the two extended ends of the mandrel is connected to the turntable by a key, and the other extended end abuts against the rotating shaft of the fixing shaft. The mounting plates on both sides of the mandrel in this embodiment are defined as a left mounting plate 8 and a right mounting plate 9. The left mounting plate is a frame structure welded from square steel and steel plates. A mounting cylinder is welded to the center of the left mounting plate. Three connecting beams welded from steel plates are welded at intervals along the circumferential direction of the axis of the mounting cylinder. Multiple square steel bars are welded between adjacent connecting beams to form a reinforcing beam. Due to the large volume and weight of the cylindrical component in this embodiment, the left mounting plate is designed as two semi-circular structures, which are fixedly connected by connecting bolts 16 to form a circular steel structure left mounting plate. The right mounting plate is connected to the turntable, and to improve its load-bearing capacity, it includes a mounting plate and a mounting cylinder. The mounting cylinder has six reinforcing plates spaced at intervals along its circumference to form a single unit. The mounting plate and mounting cylinder are connected by connecting bolts to form the right mounting plate. In this embodiment, the mounting cylinders of the left and right mounting plates have two pin holes along their upper edges, and the mandrel has through holes corresponding to the pin holes. During assembly of the left mounting plate 8, right mounting plate 9, and mandrel 11, connecting pins 10 are used to pass through the pin holes and through holes to fix and position the three components.

[0033] To securely connect the mounting plate to the cylindrical component, limit blocks 17 and fixing plates 18 are installed on the connecting beams of the left mounting plate in this embodiment. The limit blocks are evenly distributed around the circumference of the mounting plate to form a limiting part whose shape matches the end face of the cylindrical component. The fixing plates 18 are rotatably mounted on the side of the limit blocks, and one side of the fixing plate is provided with fixing bolts 26 and mounting washers 27 for fixing the cylindrical component to the mounting plate. The right mounting plate is also provided with the same limit blocks and fixing plates. Considering that the left mounting plate is assembled from two semi-circular structures, while the right mounting plate is a single structure, limit blocks and fixing plates 18 are provided on the four connecting beams of the left mounting plate, except for the connecting beam at the connection point. Hexagonal bolts 26 and mounting washers 27 are installed on the fixing plates for pressing and fixing the cylindrical component. The right mounting plate is provided with three limit blocks 17 and fixing plates 18 around its circumference. In addition, to facilitate the hoisting and assembly of components, the left mounting plate of this embodiment is provided with four hoisting positioning holes 15, and a lifting ring 19 is fixedly installed on the right mounting plate for hoisting.

[0034] The mounting base in this embodiment includes a first mounting base 2, a second mounting base 14, a third mounting base (not shown), and an axis adjustment assembly. Due to the large volume and weight of the cylindrical component in this embodiment, to facilitate component assembly and reduce the space occupied by the cutting device, the mounting base is installed on a construction surface with a pit. To improve the installation stability of the mounting base and the construction surface, the construction surface in this embodiment is a concrete surface B, which has a concrete pit structure. The first mounting base 2 and the second mounting base 14 are installed at intervals on both sides of the concrete surface above the pit, forming an installation cavity for the cylindrical component. The first mounting base 2 is fixed to the concrete surface by hexagonal bolts 25. To improve installation stability, a base 23 is installed between the first mounting base and the concrete surface. A pad is provided between the second mounting base and the concrete surface. The first mounting base 2 and the second mounting base 14 are horizontally fixed to the concrete surface by sleeve-reinforced expansion anchors 1. A cylindrical component is installed in the mounting cavity with its axis horizontally aligned. A set shaft is mounted to a first mounting base using hexagonal head screws 4. The CNC drive turntable is fixed to a second mounting base using cylindrical pins as locating pins and hexagonal head screws 13 as fixing bolts. A third mounting base is installed on the upper side of the cylindrical component for mounting the laser cutting assembly. An axis adjustment assembly is installed on the first mounting base to adjust the alignment of the cylindrical component's axis with the turntable's rotation axis. In this embodiment, the axis adjustment assembly includes a base 23, an adjusting bolt 24, a first slide 5, and a second slide 6. The adjusting bolt in this embodiment is a hexagonal head screw. The first mounting base has an adjusting threaded hole, and the adjusting bolt 24 is threaded into this hole. When the adjusting bolt rotates along the adjusting threaded hole, one end extends to the outside of the hole and abuts against the base, adjusting the radial height of the first mounting base and controlling the alignment of the set shaft's axis with the CNC drive turntable's axis. In this embodiment, both the first slide 5 and the second slide 6 are CNC slides. The first slide's mounting base is installed on the first mounting seat using a cylindrical pin 3 as a locating pin, and is fixedly connected to the first mounting seat using an internal hexagonal head screw 4. A first slide plate is slidably mounted on the first slide along the axis of the cylindrical component. A first CNC servo motor 40 and a ball screw pair 41 are fixedly mounted on the first slide. The power end of the first CNC servo motor is connected to the lead screw of the ball screw pair, and the nut end of the ball screw pair is fixedly connected to the first slide plate. The second slide is installed on the first slide plate using a cylindrical pin as a locating pin, and is fixedly connected to the first slide plate using an internal hexagonal head screw 4. A second slide plate is slidably mounted on the second slide along a direction perpendicular to the axis of the cylindrical component. A second CNC servo motor 400 and a ball screw pair 41 are fixedly mounted on the second slide. The power end of the second CNC servo motor is connected to the lead screw of the ball screw pair, and the nut end of the ball screw pair is fixedly connected to the second slide plate.The set shaft body 29 is fixedly installed on the second slide plate of the second slide table by the support plate 28 using hexagonal head screws 30 and washers 31.

[0035] In this embodiment, the fixed shaft body 29 has an inwardly extending mounting groove at the end facing the cylindrical component. The bottom of the mounting groove has a mounting hole, and a cover plate 39 is installed at the opening of the mounting groove by means of an internal hexagonal head screw. The rotating shaft 33 is rotatably mounted in the mounting groove by means of a first bearing 32 and a second bearing 36, and one end of the shaft extends to the outside of the cover plate to form a stop end. The first bearing is a single-row needle roller bearing, which is located in the mounting hole. The second bearing is a double-row tapered roller bearing, which is supported in the inner cavity of the mounting groove near the cover plate. A shoulder is provided at the position corresponding to the second bearing in the mounting groove. The second bearing abuts against the shoulder on one side by means of the outer ring of the bearing, and abuts against the cover plate 39 on the other side by means of an optional spacer 38 to limit the axial movement of the rotating shaft. Two round nut locking bolts are installed on the side of the inner ring of the second bearing away from the cover plate on the rotating shaft 33. Washers are used to adjust the bearing clearance. A lubrication hole is opened on the outer side of the fixed shaft body at the position corresponding to the second bearing. A straight-through pressure oil cup 37 is installed on the outer lubrication hole for periodically adding grease to lubricate the second bearing. An oil felt 42 is provided on the cover plate 39 at the position corresponding to the second bearing to prevent dust from entering the mounting groove.

[0036] In this embodiment, the spindle 11 has its shaft body facing the fixed shaft recessed inward along the axis to form a first positioning groove; the rotating shaft of the fixed shaft protrudes outward at the position corresponding to the first positioning groove to form a first ejector pin; the rotating shaft is installed in the first positioning groove through the first ejector pin and abuts against the spindle; the spindle has its shaft body facing the turntable protruding outward along the axis to form a second ejector pin; the position of the turntable corresponding to the second ejector pin is recessed inward to form a 60° inner conical second positioning groove; the spindle is installed in the second positioning groove through the second ejector pin and abuts against the turntable; the spindle has flat keyways evenly distributed around its circumference on the shaft body outside the second ejector pin; the position of the turntable corresponding to the inner spline is fixedly installed with a flat key 22 by a pan head screw 21; when the spindle is connected to the turntable, the flat key is installed in the flat keyway to form a key fit.

[0037] The moving component in this embodiment includes a first guide rail, a second guide rail, a swing motor, and a drive motor. The first guide rail is aligned with the axis of the cylindrical component, and the first and second guide rails are perpendicular to each other. A transverse slide plate is slidably mounted on the first guide rail and connected to the drive motor. The second guide rail is mounted on the transverse slide plate, and a vertical slide plate is slidably mounted on the second guide rail and connected to the drive motor. The laser cutting gun is mounted on the vertical slide plate via the swing motor and has a telescopic gun head.

[0038] Working Principle: In this embodiment, the multi-station laser cutting device for cylindrical parts first assembles the mounting frame and the cylindrical part. A bridge crane is used to hoist and fix the left and right mounting plates to the two end faces of the cylindrical part. The cylindrical part is then pressed and fixed by the fixing plates on the left and right mounting plates. Next, the mandrel is installed inside the cylindrical part, with both ends passing through the mounting cylinders of the left and right mounting plates and extending to the outside of the cylindrical part, forming extended ends. Then, the left and right mounting plates and the mandrel are fixedly connected by connecting pins. Next, the mandrel is lifted by the crane and adjusted to ensure its axis is horizontal. Finally, the mandrel with the cylindrical part fixed to it is lifted and moved to the mounting cavity.

[0039] Next, the mandrel is installed and connected to the turntable of the CNC drive rotary table. Specifically, the first and second CNC servo motors are activated to control the first and second slides, thereby adjusting the rotating shaft of the set shaft to align with the mandrel until the first ejector pin of the set shaft, the first and second positioning grooves of the mandrel, and the second ejector pin of the turntable are mutually engaged and locked in place. It is important to note that during the connection process, to ensure a keyed fit between the mandrel and the turntable, the CNC drive rotary table motor needs to be activated to rotate the turntable, causing the flat keyway of the mandrel to align with the flat key of the turntable, facilitating the set shaft to lock the mandrel against the turntable.

[0040] After completing the connection of the mandrel, set shaft, and turntable, check the installation. If any deviation is found in the horizontal or vertical direction of the cylindrical part (the axis of mandrel 11 is not parallel to the cutting direction of the laser cutting gun, which will cause the ventilation window to be deviated after cutting), adjust the first and second slides, make a fine adjustment to the axis of the mandrel, loosen the hex bolts and adjust the internal hexagonal head screws to make a fine adjustment in the radial direction, control and ensure that the axis of rotation of the mandrel is parallel to the cutting direction of the laser cutting machine.

[0041] After installation, start the CNC drive turntable and run it one cycle in both directions according to the program to check that the mandrel, set shaft, and turntable have good contact and no interference. After the check is normal, locate the cutting starting point on the cylindrical part according to the cutting program, and rotate the cutting starting point above the drive turntable so that the cutting surface is parallel to the longitudinal and transverse planes of the laser cutting gun. Call the laser cutting program using a multi-segment program, setting the running interval time between each segment, and simultaneously start the CNC drive turntable to start the cutting program. Set the rotation angle, dwell time after rotation, and other parameters. After the drive turntable rotates and dwells for a certain period of time, the laser cutting gun head begins to position and cut. After the cutting is completed, it dwells for a certain period of time, and then the drive turntable rotates again to complete the cutting of all windows in sequence.

[0042] The above describes the positioning and cutting method using the ventilation window of the machine base. Alternatively, it can be controlled by a computer to link the cutting operation program of the laser cutting gun with the servo driver program of the CNC drive turntable, eliminating the waiting time during the positioning and cutting process and the rotation of the drive turntable, thus shortening the product production process time and improving productivity.

[0043] After all ventilation windows have been cut, the mandrel assembly is first floated using a bridge crane, and then the first and second slides are used to control the set shaft to return to its original position and move away from the mandrel. Next, the bridge crane is controlled to lift the mandrel assembly away from the set shaft and rotate it to place it on a support of equal height. Then, the left and right mounting plates are disassembled in sequence to complete the ventilation window cutting work for one stator frame.

[0044] As described above, although the present invention has been shown and described with reference to specific preferred embodiments, it should not be construed as limiting the present invention itself. Various changes in form and detail may be made to the present invention without departing from the spirit and scope of the appended claims.

Claims

1. A multi-station laser cutting device for cylindrical parts, comprising a mounting assembly, a drive turntable, and a laser cutting assembly; characterized in that: The mounting assembly includes a mounting frame and a mounting base. The cylindrical component is rotatably mounted on the mounting base via the mounting frame around the axis of the cylindrical component. The power end of the drive turntable is connected to the mounting frame to drive the mounting frame to rotate. The laser cutting assembly includes a laser cutting gun and a moving assembly. The laser cutting gun moves along the axis of the cylindrical component via the moving assembly.

2. The multi-station laser cutting apparatus for cylindrical articles of claim 1, wherein, The mounting bracket includes a mandrel, a turntable, and a retaining shaft. The mandrel is installed along the axis of the cylindrical component inside the cylindrical component, and its two ends extend to the outer sides of the cylindrical component to form two extended ends. A mounting plate is fixedly installed on the shaft corresponding to the two end faces of the cylindrical component. The mounting plate is provided with a fixing member for fixed connection with the cylindrical component. The turntable is installed on the power end of the drive turntable. The retaining shaft is installed at a distance from the turntable on the mounting base, and a rotating shaft is rotatably installed at its end. One of the two extended ends of the mandrel is connected to the turntable by a key, and the other extended end abuts against the rotating shaft of the retaining shaft.

3. The multi-station laser cutting apparatus for cylindrical articles of claim 2, wherein, The mounting base includes a first mounting base, a second mounting base, a third mounting base, and an axis adjustment assembly; the first and second mounting bases are installed at intervals relative to each other, forming a mounting cavity for the cylindrical component; the cylindrical component is installed in the mounting cavity with its axis arranged horizontally; the fixed shaft is installed on the first mounting base, and the drive turntable is installed on the second mounting base; the third mounting base is installed on the upper side of the cylindrical component for mounting the laser cutting assembly; the axis adjustment assembly is installed on the first mounting base for adjusting the alignment of the cylindrical component's axis with the turntable's rotation axis.

4. The multi-station laser cutting apparatus for cylindrical articles of claim 3, wherein, The axis adjustment assembly includes a base, an adjusting bolt, a first slide, and a second slide. The first mounting base is installed on the base, and an adjusting threaded hole is provided on the first mounting base at a position corresponding to the base. The adjusting bolt is threadedly connected to the adjusting threaded hole, and one end of the bolt extends to the outside of the adjusting threaded hole and abuts against the base to adjust the radial height of the first mounting base. The first slide is fixedly installed on the first mounting base, and a first sliding plate is slidably installed on it along the axis of the cylindrical component. The first sliding plate is driven by a first driving member. The second slide is fixedly installed on the first sliding plate, and a second sliding plate is slidably installed on it in the horizontal direction along a direction perpendicular to the axis of the cylindrical component. The second sliding plate is driven by a second driving member. The set shaft is fixedly installed on the second sliding plate.

5. The multi-station laser cutting apparatus for cylindrical articles of claim 2, wherein, The set shaft has an inwardly extending mounting groove at its end facing the cylindrical component. The bottom of the mounting groove has a mounting hole, and a cover plate covers the groove opening. The rotating shaft is rotatably mounted in the mounting groove via a first bearing and a second bearing, with one end extending to the outside of the cover plate to form a stop end. The first bearing is located in the mounting hole, and the second bearing is a load-bearing bearing, located near the cover plate. A shoulder is provided in the mounting groove corresponding to the second bearing. The second bearing abuts against the shoulder on one side of its outer ring and against the cover plate on the other side to limit axial movement of the rotating shaft. A locking bolt is installed on the rotating shaft on the side of the second bearing's inner ring away from the cover plate to adjust bearing clearance. A lubrication hole is provided on the outer side of the set shaft corresponding to the second bearing to lubricate the second bearing. A dustproof component is provided on the cover plate corresponding to the second bearing.

6. The multi-station laser cutting apparatus for cylindrical articles of claim 2, wherein, The mandrel's shaft body facing the fixed shaft is recessed inward along the axis to form a first positioning groove; the rotating shaft of the fixed shaft protrudes outward at the position corresponding to the first positioning groove to form a first ejector pin; the rotating shaft is mounted in the first positioning groove via the first ejector pin and abuts against the mandrel; the mandrel's shaft body facing the turntable protrudes outward along the axis to form a second ejector pin; the turntable's position corresponding to the second ejector pin is recessed inward to form a conical second positioning groove; the mandrel is mounted in the second positioning groove via the second ejector pin and abuts against the turntable; the mandrel's shaft body located outside the second ejector pin has evenly spaced flat keyways along its circumference; a flat key is fixedly installed at the position corresponding to the internal spline on the turntable; when the mandrel is connected to the turntable, a key fit is formed by installing the flat key in the flat keyway.

7. The multi-station laser cutting apparatus for cylindrical articles of claim 2, wherein, The mounting plate has a mounting cylinder in the middle, and a number of reinforcing plates are evenly distributed around the outer side of the mounting cylinder along the circumference, and the inner side is fitted onto the mandrel; the mounting cylinder has a number of pin holes at intervals along the cylinder body, and the mandrel has through holes at positions corresponding to the pin holes; the mounting plate is fixedly connected to the mandrel by connecting pins passing through the pin holes and through holes; the mounting cylinder is equipped with lifting components.

8. The multi-station laser cutting apparatus for cylindrical articles of claim 2, wherein, The fastener includes several limiting blocks and a fixing plate. The limiting blocks are evenly distributed around the circumference of the mounting plate to form a limiting part whose shape matches the end face of the cylindrical part. The fixing plate is rotatably mounted on the side of the limiting block, and a fixing bolt is provided on one side of the fixing plate to fix the cylindrical part to the mounting plate.

9. The multi-station laser cutting apparatus for cylindrical articles of claim 1, wherein, The moving component includes a first guide rail, a second guide rail, a swing motor, and a drive motor. The first guide rail is aligned with the axis of the cylindrical component, and the first and second guide rails are perpendicular to each other. A first sliding plate is slidably mounted on the first guide rail and connected to the drive motor. The second guide rail is mounted on the first sliding plate, and a second sliding plate is slidably mounted on the second guide rail and connected to the drive motor. The laser cutting gun is mounted on the second sliding plate via the swing motor and has a telescopic gun head.

10. The multi-station laser cutting apparatus for cylindrical articles of claim 3, wherein, The mounting base is installed on the installation medium, which has a pit structure. The first mounting base and the second mounting base are respectively installed on both sides of the pit top, and the cylindrical component is installed in the pit.

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