Multi-station laser cutting device for cylindrical part

Abstract

The invention 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 problems that in the prior art, when a ventilation window is produced on a cylindrical part stator base, a manual cutting mode is adopted, cutting heat exists, so that the base is deformed, the appearance quality of a cut product 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] The present invention relates to the technical field of cutting equipment, and more particularly to a multi-station laser cutting device for cylindrical parts. Background Art

[0002] The semi-direct drive motor is a medium-speed generator designed and developed by the wind power manufacturing industry to meet market demands, reduce the cost of wind power equipment, and promote industrial transformation and upgrading. Compared with the permanent magnet direct drive generator, it has the characteristics of small volume, light weight, and less use of permanent magnet rare earth. Under the same wind blade rotation speed conditions of the direct drive motor, the generator speed is increased through a speed increasing transmission to achieve the purpose of generating more electricity.

[0003] Due to the increase in the operating speed of the semi-direct drive motor, more heat is generated during operation, and it is necessary to dissipate heat through air cooling or water cooling methods. Therefore, multiple ventilation windows are added to the design of the stator frame of the semi-direct drive motor, and the purpose of motor ventilation and temperature reduction is achieved through a filter screen and a ventilation system. When manufacturing the structure of multiple ventilation windows on the stator frame, in the prior art, it is mainly processed by using a template to draw lines and manually holding a cutting torch for cutting.

[0004] Using the method of template marking and manual cutting has some deficiencies. For example, when cutting multiple ventilation windows with a flame cutting torch, the cutting heat is likely to cause deformation of the outer cylinder of the frame. The appearance quality of the window edge after manual cutting is poor, and manual grinding is required, resulting in high labor intensity of personnel and a large amount of cutting work, low production efficiency, and high labor cost. Therefore, a multi-window cutting device for cylindrical parts is needed to solve the problems in the prior art that when producing ventilation windows on the stator frame of cylindrical parts, the manual cutting method causes deformation of the frame due to cutting heat, poor appearance quality of the cut product, low manual production efficiency, and high production cost. Summary of the Invention

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

[0006] To achieve the above purpose, the present invention provides the following technical solution: A multi-station laser cutting device for cylindrical parts, comprising a mounting assembly, a driving turntable, and a laser cutting assembly; the mounting assembly includes a mounting frame and a mounting seat, and the cylindrical part is rotatably mounted on the mounting seat around the axis of the cylindrical part through the mounting frame. The power end of the driving 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, and the laser cutting gun moves along the direction of the axis of the cylindrical part through the moving assembly.

[0007] Preferably, the mounting bracket includes a mandrel, a turntable and a locking shaft; the mandrel is installed inside the cylindrical part along the axis of the cylindrical part, and its two ends respectively extend to the outside of the cylindrical part to form two extended ends on both sides; mounting plates are fixedly installed on the shaft bodies of the mandrel corresponding to the two end faces of the cylindrical part, and the mounting plates are provided with fixing parts for fixedly connecting with the cylindrical part; the turntable is installed at the power end of the driving turntable; the locking shaft is installed on the mounting seat at an interval relative to the turntable, 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 key fit, and the other extended end abuts against the rotating shaft of the locking shaft.

[0008] Preferably, the mounting seat includes a first mounting seat, a second mounting seat, a third mounting seat and an axis adjustment assembly; the first mounting seat and the second mounting seat are installed at intervals relative to each other, and an installation cavity for the cylindrical part is formed therebetween; the cylindrical part is installed in the installation cavity with its axis arranged horizontally; the locking shaft is installed on the first mounting seat, and the driving turntable is installed on the second mounting seat; the third mounting seat is installed on the upper side of the cylindrical part for installing a laser cutting assembly; the axis adjustment assembly is installed on the first mounting seat for adjusting the axis of the cylindrical part to be consistent with the rotation axis of the turntable.

[0009] Preferably, the axis adjustment assembly includes a base, an adjustment bolt, a first slide table and a second slide table; the first mounting seat is installed on the base, and an adjustment threaded hole corresponding to the base is opened at a position on the first mounting seat, the adjustment bolt is threadedly connected and installed in the adjustment threaded hole, and one end of it extends to the outside of the adjustment threaded hole and abuts against the base to adjust the radial height of the first mounting seat; the first slide table is fixedly installed on the first mounting seat, and a first slide plate is slidably installed on it along the axis direction of the cylindrical part, and the first slide plate is driven by a first driving member; the second slide table is fixedly installed on the first slide plate, and a second slide plate is slidably installed on it in the horizontal direction along a direction perpendicular to the axis of the cylindrical part, and the second slide plate is driven by a second driving member; the locking shaft is fixedly installed on the second slide plate; the first driving member and the second driving member of the present invention can adopt the commonly used driving members in the prior art to drive the sliding movement of the slide plate, such as pneumatic, hydraulic or electric driving members. In order to improve the accuracy of the sliding stroke of the slide table, the present invention preferably uses a servo motor to drive a ball screw pair to drive the sliding movement of the slide plate.

[0010] Preferably, an installation groove is provided inwardly on one end side of the set screw shaft facing the cylindrical part. An installation hole is provided at the bottom of the installation groove, and a cover plate covers the installation groove opening. The rotating shaft is rotatably installed in the installation groove through a first bearing and a second bearing, and one end of the rotating shaft extends outside the cover plate to form a stop end. The first bearing is located in the installation hole, the second bearing is a load-bearing bearing and is adjacent to the cover plate side. A shoulder is provided at a position corresponding to the second bearing in the installation groove. The second bearing abuts against the shoulder on one side of the bearing outer ring and abuts 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 inner ring away from the cover plate to adjust the bearing clearance. A lubrication hole is provided at a position corresponding to the second bearing on the outer side of the set screw shaft for lubricating the second bearing. A dust-proof member is provided at a position corresponding to the second bearing on the cover plate.

[0011] Preferably, the shaft body of the mandrel facing the set screw shaft is recessed inward along the axis to form a first positioning groove. The shaft body of the rotating shaft of the set screw shaft corresponding to the first positioning groove protrudes outward 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 mandrel. The shaft body of the mandrel 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 tapered second positioning groove. The mandrel is installed in the second positioning groove through the second ejector pin and abuts against the turntable. The shaft body of the mandrel located outside the second ejector pin is evenly distributed with flat key grooves along the circumference at intervals. A flat key is fixedly installed at a position corresponding to the internal spline on the turntable. When the mandrel is connected to the turntable, it is installed in the flat key groove through the flat key to form a key fit.

[0012] Preferably, an installation cylinder is provided in the middle of the installation plate. A plurality of reinforcing plates are evenly distributed along the circumference on the outer side of the installation cylinder and the inner side is sleeved on the mandrel. A plurality of pin holes are provided at intervals along the cylinder body of the installation cylinder. Through holes are provided at positions corresponding to the pin holes on the mandrel. The installation plate is fixedly connected to the mandrel through a connecting pin passing through the pin holes and the through holes. A lifting member is provided on the installation cylinder.

[0013] Preferably, the fixing member includes a plurality of limiting blocks and a fixing pressing plate. The plurality of limiting blocks are evenly distributed along the circumference of the installation plate to form a limiting portion whose shape is adapted to the end face of the cylindrical part. The fixing pressing plates are rotatably installed on the sides of the limiting blocks one by one, and a fixing bolt is provided on one side of the fixing pressing plate for fixing the cylindrical part to the installation plate.

[0014] Preferably, the moving assembly includes a first guide rail, a second guide rail, a swing motor and a driving motor. The first guide rail is consistent with the axis direction of the cylindrical part. The first guide rail and the second guide rail are perpendicular to each other. A first slide plate is slidably installed on the first guide rail, and the first slide plate is connected to the driving motor. The second guide rail is installed on the first slide plate, and a second slide plate is slidably installed on the second guide rail, and the second slide plate is connected to the driving motor. The laser cutting gun is installed on the second slide plate through the swing motor and is provided with a telescopic gun head.

[0015] Preferably, the mounting base is mounted on a mounting medium provided with a pit structure. The first mounting base and the second mounting base are respectively mounted on both sides of the top of the pit, and the cylindrical member is mounted in the pit. Advantages

[0016] 1. The present invention realizes laser cutting of a cylindrical member by providing a mounting component, a driving turntable and a laser cutting component. The mounting component includes a mounting frame and a mounting base. The cylindrical member is rotatably mounted on the mounting base around the axis of the cylindrical member through the mounting frame. The power end of the driving turntable is connected to the mounting frame to drive the mounting frame to rotate. By setting the laser cutting gun to move along the axis of the cylindrical member and cooperating with the driving turntable to drive the cylindrical member to rotate, the laser cutting gun can cut the cylindrical member according to the cutting requirements to form a ventilation window. The laser cutting device of the present invention can replace manual cutting, reduce the workload of personnel and improve production efficiency. In addition, using laser cutting instead of flame cutting can improve the appearance quality of the finished cylindrical member, reduce or eliminate the need for subsequent manual grinding, and laser cutting can also avoid deformation of the cylindrical member caused by cutting heat. The finished product rate of the cylindrical member of the present invention is high and the production cost is low. 2. On the basis of the above, considering that the cylindrical member of the present invention is a semi-direct drive motor stator base with a large volume and weight, in order to ensure the installation stability of the cylindrical member, the mounting frame of the present invention includes a core shaft. The core shaft is installed inside the cylindrical member along the axis of the cylindrical member, and its two ends respectively extend to the outside of the cylindrical member to form two side extension ends. Mounting plates are fixedly installed on the shaft bodies of the core shaft corresponding to the two end faces of the cylindrical member. The mounting plates are provided with fixing members for fixedly connecting with the cylindrical member. By installing the core shaft along the axis of the cylindrical member and extending the two ends to the outside of the cylindrical member, and setting mounting plates at positions corresponding to the two end faces of the cylindrical member for fixedly connecting with the cylindrical member, the cylindrical member is connected to the core shaft as a whole through the mounting plates. At the same time, since the core shaft is arranged along the axis of the cylindrical member, when driven to rotate by the driving turntable, it can ensure that the rotation of the cylindrical member is coaxial with the rotation of the core shaft, so as to improve the cutting accuracy. 3. On the basis of the above, in order to ensure that the rotation axes of the core shaft and the driving turntable are consistent, the present invention provides a turntable and a set screw shaft. The turntable is fixedly installed on the power end of the driving turntable, and the set screw shaft is installed on the mounting base at an interval relative to the turntable, and a rotating shaft is rotatably installed at its end. One of the two side extension ends of the core shaft is connected to the turntable through key fit, and the other side extension end abuts against the rotating shaft of the set screw shaft. To achieve the consistency of the rotation axes of the core shaft and the power end of the driving turntable. And by the set screw shaft abutting against the core shaft, the set screw shaft plays a role in fixing and limiting the core shaft and quickly positioning it, realizing quick installation. At the same time, through the installation method of the set screw shaft abutting against the core shaft, the installation accuracy is high, and the problem of reducing the installation accuracy caused by the accumulation of installation errors due to a large number of installation parts is avoided. 4. On the basis of the above, when the specification size of the cylindrical part changes, resulting in changes in the axis of the mandrel and the length of the cylindrical part, in order to ensure the adaptation of the axis of the mandrel to the rotation axis of the driving turntable; the present invention is provided with an axis adjustment assembly, which includes a base, an adjustment bolt, a first slide and a second slide, so as to realize the adjustment of the fixed shaft in the horizontal direction and the radial direction, so that the axis of the fixed shaft is consistent with the rotation axis of the driving turntable; wherein, the first mounting seat is mounted on the base through the adjustment bolt, and the height of the first mounting seat in the radial direction is adjusted through the adjustment bolt; the position of the first mounting seat on the horizontal plane is adjusted in the direction of the axis of the mandrel and the direction perpendicular to the axis of the mandrel through the first slide and the second slide, so as to be applicable to cylindrical parts of different specification sizes; it should be noted that the position adjustment in the direction of the axis of the mandrel is not only applicable to the adaptation adjustment when the specification size of the cylindrical part changes, but also can be used to drive the fixed shaft to abut the mandrel against the turntable, so as to ensure that the mandrel will not be displaced during the cutting process, make the cylindrical part firmly installed, and improve the cutting quality; 5. On the basis of the above, considering that the mandrel loaded with the cylindrical part is abutted against the turntable by the fixed shaft, in order to ensure that the fixed shaft not only abuts against the mandrel along the axis, but also ensures that the mandrel can rotate normally; the present invention opens an installation groove on the fixed shaft and rotatably installs a rotating shaft through a bearing; wherein, an installation hole is opened at the bottom of the installation groove, a cover plate is covered at the opening of the installation groove, the rotating shaft is rotatably installed in the installation hole through a first bearing, and is rotatably installed at a position near the opening of the installation groove through a second bearing; since the rotating shaft also bears the function of abutting against the mandrel; therefore, the second bearing adopts a load-bearing bearing, preferably a double-row bearing; in order to ensure the use stability of the second bearing, the present invention opens a shoulder in the installation groove and sets a cover plate to limit the outer ring of the second bearing to avoid the axial movement of the bearing, and sets a locking nut on the rotating shaft to adjust the bearing clearance of the inner ring of the second bearing to ensure the use stability of the second bearing; in addition, the present invention opens a lubricating hole on the fixed shaft and sets a dust-proof part on the cover plate to improve the service life of the second bearing and reduce the operation cost; 6. On the basis described above, the shaft body of the mandrel towards the side of the locking shaft is recessed inward along the axis to form a first positioning groove; the shaft body of the rotating shaft of the locking shaft corresponding to the first positioning groove bulges outward 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 mandrel; the shaft body of the mandrel towards the side of the turntable bulges 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; so as to realize abutting the mandrel against the turntable by means of an ejector pin type abutting method, so that during the cutting process, the stable contact between the mandrel and the turntable does not displace, and it is ensured that the axis of the mandrel is always consistent with the axis of the turntable during the rotation process; at the same time, the ejector pin type abutting method can realize the quick positioning and installation of the locking shaft, the mandrel and the turntable, improve the assembly efficiency, and thus improve the production efficiency; in addition, in order to ensure that the driving force of the driving turntable can be effectively transmitted to the mandrel, the present invention adopts to open a key groove on the mandrel and install a flat key on the turntable to form a key fit connection to ensure that the driving force can be efficiently transmitted to the mandrel; 7. On the basis described above, the mounting plate and the mandrel of the present invention adopt a split connection method. Among them, a mounting cylinder is provided on the mounting plate. By opening corresponding pin holes and through holes on the mounting cylinder and the mandrel, the mounting plate and the mandrel are fixedly connected through a connecting pin. The setting of the mounting cylinder also increases the mounting area with the mandrel to improve the mounting stability between the two; and in order to improve the fixed connection between the mounting plate and the cylindrical part, the present invention realizes that the limiting blocks are evenly distributed at intervals along the circumference of the mounting plate by arranging the limiting blocks and the fixing pressing plate on the mounting plate to form a limiting part adapted to the end face shape of the cylindrical part, ensure the quick positioning and installation of the cylindrical part and the mounting plate during installation, and fix the cylindrical part on the mounting plate through the fixing pressing plate; the present invention adopts a split connection method for the mounting frame to realize the quick positioning and installation of the mounting frame and the cylindrical part, reduce the difficulty of component installation, and improve the production efficiency; 8. The stator frame of the semi-direct drive motor of the present invention is of a cylindrical part structure, and the ventilation windows to be opened are located on the side wall of the cylindrical part. Therefore, the actual ventilation windows are of an arc shape structure, and a plurality of ventilation windows are located at different positions of the cylindrical part; the present invention is provided with a moving component, which includes a first guide rail, a second guide rail, a swing motor and a driving motor. The laser cutting gun is slidably installed on the third mounting seat through the first guide rail and the second guide rail to realize that the laser cutting gun can be adjusted in position in the front, back, left and right directions along the horizontal direction to cut ventilation windows at different positions; during cutting, the laser cutting gun cooperates with the rotation of the cylindrical part to cut out ventilation windows of an arc shape structure. In order to ensure that the cutting direction of the gun head always maintains a certain angle with the cylindrical part, the present invention drives the gun head to swing by setting a swing motor, so as to ensure that the cutting angle remains consistent and improve the cutting quality; 9. On the basis described above, the mounting base of the present invention is mounted on a mounting medium. The mounting medium is provided with a pit structure. The first mounting base and the second mounting base are respectively mounted on both sides of the top of the pit, and the cylindrical member is mounted in the pit. By mounting the cylindrical member in the pit, the construction height is reduced, the component installation space is decreased, so as to ensure the construction safety and convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 FIG. is a schematic structural diagram of a multi-station laser cutting device for a cylindrical member of an embodiment; Figure 2 FIG. is a top view of the structure of a multi-station laser cutting device for a cylindrical member of an embodiment; Figure 3 FIG. is a side view of the structure of a multi-station laser cutting device for a cylindrical member of an embodiment; Figure 4 FIG. is an exploded view of the mounting structure of the mounting frame and the cylindrical member of a multi-station laser cutting device for a cylindrical member of an embodiment; Figure 5 FIG. is a sectional view of the structure of the set screw of a multi-station laser cutting device for a cylindrical member of an embodiment. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The technical solution of the present invention will be described in detail below with reference to the drawings, but the protection scope of the present invention is not limited to the embodiments.

[0019] Please refer to Figures 1-5 , this embodiment provides a multi-station laser cutting device for a cylindrical member, including a mounting assembly, a numerically controlled driving turntable 12 and a laser cutting assembly; the mounting assembly includes a mounting frame and a mounting base. The cylindrical member A is rotationally mounted on the mounting base around the axis of the cylindrical member through the mounting frame. The power end of the numerically controlled driving 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 direction of the axis of the cylindrical member through the moving assembly.

[0020] The mounting bracket of this embodiment includes a mandrel 11, a turntable 20, and a set screw shaft 7. The mandrel 11 is installed inside the cylindrical part along the axis of the cylindrical part, and its two ends respectively extend to the outside of the cylindrical part to form two extended ends on both sides. Mounting plates are fixedly installed on the shaft bodies of the mandrel corresponding to the two end faces of the cylindrical part, and the mounting plates are provided with fixing parts for fixedly connecting with the cylindrical part. The turntable 20 is installed at the power end of the numerically controlled driving turntable. The set screw shaft 7 is installed on the mounting seat at an interval 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 through key fitting, and the other extended end abuts against the rotating shaft of the set screw 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 by square steel and steel plates. An installation cylinder is welded in the center of the left mounting plate. Three connecting beams welded by steel plates are welded at intervals in the circumferential direction of the axis of the installation cylinder. Multiple square steels are welded between adjacent two connecting beams to form reinforcing beams. Since the cylindrical part of this embodiment is large in volume and heavy, the left mounting plate is set as two semi-circular structures, which are fixedly connected through connecting bolts 16 to form a circular steel structure left mounting plate. The right mounting plate is connected to the turntable. And in order to improve the bearing capacity of the right mounting plate, the right mounting plate includes a mounting plate and an installation cylinder. Six reinforcing plates are arranged at intervals along the circumference of the installation cylinder to form a whole, and the mounting plate and the installation cylinder are connected by connecting bolts to form the right mounting plate. There are two pin holes along the cylinder body on the installation cylinders of the left mounting plate and the right mounting plate in this embodiment, and through holes are opened at the positions of the mandrel corresponding to the pin holes. When assembling the left mounting plate 8, the right mounting plate 9 and the mandrel 11, the three are fixedly positioned and installed by the connecting pin 10 passing through the pin holes and the through holes respectively.

[0021] In order to fixedly connect the mounting plate with the cylindrical part, limit blocks 17 and fixed pressing plates 18 are respectively installed on the connecting beams of the left mounting plate in this embodiment. The limit blocks are evenly distributed at intervals along the circumference of the mounting plate to form a limiting part whose shape is adapted to the end face of the cylindrical part. The fixed pressing plates 18 are rotatably installed on the sides of the limit blocks one by one, and one side of the fixed pressing plate is provided with a fixing bolt 26 and a mounting gasket 27 for fixing the cylindrical part to the mounting plate. The same limit blocks and fixed pressing plates are also provided on the right mounting plate. Considering that the left mounting plate is assembled by two semi-circular structures. And the right mounting plate is an integral structure. Therefore, limit blocks and fixed pressing plates 18 are provided on the other four connecting beams of the left mounting plate except the connecting beams at the connection part. Hexagonal bolts 26 and mounting gaskets 27 are installed on the fixed mounting plate for pressing and fixing the cylindrical part. Three limit blocks 17 and fixed pressing plates 18 are arranged along the circumference of the right mounting plate. In addition, in order to facilitate hoisting and assembling the components, four hoisting positioning holes 15 are provided on the left mounting plate in this embodiment, and a lifting ring 19 is fixedly installed on the right mounting plate for hoisting.

[0022] The mounting base of this embodiment includes a first mounting base 2, a second mounting base 14, a third mounting base (not shown), and an axis adjustment component; since the cylindrical part of this embodiment is large in volume and heavy in weight, in order to facilitate the assembly of the components of the mounting frame and reduce the floor space occupied by the cutting device, the mounting base of this embodiment is installed on the construction ground with a pit. In order to improve the installation stability of the mounting base and the construction ground, the construction ground of this embodiment adopts a concrete ground B, which has a concrete pit structure. The first mounting base 2 and the second mounting base 14 are relatively and spacedly installed on the concrete ground on both sides of the pit top of the pit, forming an installation cavity for the cylindrical part; the first mounting base 2 is fixedly installed on the concrete ground by hexagon bolts 25. In order to improve the installation stability, a base 23 is installed between the first mounting base and the concrete ground of this embodiment. And a backing plate is provided between the second mounting base and the concrete ground. The first mounting base 2 and the second mounting base 14 are horizontally fixed to the concrete ground by sleeve-reinforced expansion anchor bolts 1. The cylindrical part is installed in the installation cavity with its axis arranged horizontally; the set screw shaft is installed on the first mounting base by internal hexagon socket head cap screws 4, and the numerically controlled drive turntable is fixedly installed on the second mounting base by using a cylindrical pin as a positioning pin and internal hexagon socket head cap screws 13 as fixing bolts; the third mounting base is installed on the upper side of the cylindrical part for installing the laser cutting component; the axis adjustment component is installed on the first mounting base for adjusting the axis of the cylindrical part to be consistent with the axis of the turntable rotation. Among them, the axis adjustment component of this embodiment includes a base 23, an adjustment bolt 24, a first slide table 5, and a second slide table 6. The adjustment bolt of this embodiment adopts an internal hexagon socket head cap screw. An adjustment threaded hole is opened on the first mounting base of this embodiment. The adjustment bolt 24 is threadedly installed in the adjustment threaded hole. When the adjustment bolt rotates along the adjustment threaded hole, one end of it extends to the outside of the adjustment threaded hole and abuts against the base to adjust the radial height of the first mounting base, and control the axis height of the set screw shaft to be consistent with the axis height of the numerically controlled drive turntable. The first slide table 5 and the second slide table 6 of this embodiment are both numerically controlled slide tables. Among them, the first slide table fixing seat is installed on the first mounting base by using a cylindrical pin 3 as a positioning pin and is fixedly connected to the first mounting base by internal hexagon socket head cap screws 4. A first slide plate is slidably installed on the first slide table along the axis direction of the cylindrical part. A first numerically controlled servo motor 40 and a ball screw pair 41 are fixedly installed on the first slide table. The power end of the first numerically controlled servo motor is connected to the screw of the ball screw pair, and the nut end of the ball screw pair is fixedly connected to the first slide plate. And the second slide table is installed on the first slide plate by using a cylindrical pin as a positioning pin and is fixedly connected to the first slide plate by internal hexagon socket head cap screws 4. A second slide plate is slidably installed on the second slide table along the direction perpendicular to the axis of the cylindrical part. A second numerically controlled servo motor 400 and a ball screw pair 41 are fixedly installed on the second slide table. The power end of the second numerically controlled servo motor is connected to the 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 screw shaft fixes and installs the set screw shaft body 29 on the second slide plate of the second slide table by means of an internal hexagon socket head screw 30 and a washer 31 through a support plate 28.

[0023] One end of the set screw shaft body 29 of this embodiment is provided with an installation groove inwardly on the side facing the cylindrical part. An installation hole is provided at the bottom of the installation groove. A cover plate 39 is installed and covered at the opening of the installation groove by an internal hexagon socket head screw; the rotating shaft 33 is rotatably installed in the installation groove through a first bearing 32 and a second bearing 36, and one end of it extends to the outside of the cover plate to form a stop end; the first bearing adopts a single row needle roller bearing, which is located in the installation hole. The second bearing is a double row tapered roller bearing and is supported in the inner cavity of the installation groove near the cover plate side; a shoulder is provided at the position corresponding to the second bearing in the installation groove. The second bearing abuts against the shoulder on one side of the bearing outer ring and abuts against the cover plate 39 through a selected spacer 38 on the other side to limit the axial end play 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, and washers are used to adjust the bearing clearance; a lubrication hole is provided at the position corresponding to the second bearing on the outside of the set screw shaft body. A straight-through grease nipple 37 is installed on the upper part of the outside lubrication hole to be used for regularly filling grease to lubricate the second bearing; a felt 42 is provided at the position corresponding to the second bearing on the cover plate 39 to prevent dust from entering the installation groove.

[0024] The shaft body of the mandrel 11 of this embodiment on the side facing the set screw shaft is recessed inward along the axis to form a first positioning groove; the shaft body of the rotating shaft of the set screw shaft corresponding to the first positioning groove protrudes outward 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 mandrel; the shaft body of the mandrel on the side 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 60° inner conical second positioning groove; the mandrel is installed in the second positioning groove through the second ejector pin and abuts against the turntable; flat key grooves are evenly distributed at intervals along the circumference on the shaft body of the mandrel outside the second ejector pin. A flat key 22 is fixedly installed at the position of the turntable corresponding to the internal spline by a pan head screw 21. When the mandrel is connected to the turntable, it is installed in the flat key groove through the flat key to form a key fit.

[0025] The moving component of this embodiment includes a first guide rail, a second guide rail, a swing motor and a driving motor; the first guide rail is consistent with the axis direction of the cylindrical part. The first guide rail and the second guide rail are perpendicular to each other. A transverse slide plate is slidably installed on the first guide rail, and the transverse slide plate is connected to the driving motor. The second guide rail is installed on the transverse slide plate, and a vertical slide plate is slidably installed on the second guide rail, and the vertical slide plate is connected to the driving motor; the laser cutting gun is installed on the vertical slide plate through the swing motor and is provided with a telescopic gun head.

[0026] Working principle: When using the multi-station laser cutting device for cylindrical parts of this embodiment, first assemble the mounting frame and the cylindrical part. Use a bridge crane to hoist the left and right mounting plates and fix them on the two side end faces of the cylindrical part. Press and fix the cylindrical part through the fixed pressure plates on the left and right mounting plates. Then install the mandrel on the inside of the cylindrical part. Its two ends pass through the mounting tubes of the left and right mounting plates and extend to the outside of the cylindrical part to form an extended end. Then fix the left and right mounting plates and the mandrel with the connecting pins. Then lift the mandrel with the crane and adjust it so that the axis is horizontal. Then lift the mandrel with the cylindrical part fixed and transfer it to the installation cavity.

[0027] Then, the mandrel is docked and installed with the turntable of the CNC-driven turntable. Specifically, the first CNC servo motor and the second CNC servo motor are started to control the first slide and the second slide to adjust the rotating shaft of the fixing shaft to dock with the mandrel until the first ejector pin of the rotating shaft of the fixing shaft, the first positioning groove of the mandrel, the second positioning groove and the second ejector pin of the turntable are pressed against each other. It should be noted here that during the docking process, in order to ensure that the mandrel and the turntable are key-fitted, it is necessary to start the CNC-driven turntable motor to drive the turntable to rotate, so that the flat key groove of the mandrel is connected with the flat key of the turntable, so that the fixing shaft can stop the mandrel on the turntable.

[0028] After completing the docking of the mandrel, the locking shaft and the turntable, check the installation status. If the cylindrical part is found to be deflected in the horizontal and vertical directions (the axis of the mandrel 11 is not parallel to the cutting direction of the laser cutting gun, which will cause the ventilation window to deflect after cutting), adjust the first slide and the second slide, fine-tune the axis of the mandrel, loosen the hexagonal bolt and adjust the hexagonal cylindrical head screw to fine-tune the radial direction, control and ensure that the rotation axis of the mandrel is parallel to the cutting direction of the laser cutting machine.

[0029] After the installation is completed, start the CNC drive turntable and run it forward and backward for one week according to the program to check that the core shaft, the locking shaft and the turntable are in good contact and there is no interference. After the inspection is normal, find the starting point of the cutting on the cylindrical part according to the cutting program, and use the CNC drive turntable to rotate the cutting starting point to the top of the drive turntable, that is, the cutting surface is parallel to the longitudinal and transverse surfaces of the laser cutting gun. The laser cutting program is called using a multi-segment program. The running interval time is set between each program. The CNC drive turntable button is started synchronously to cut the program, and the rotation angle, the dwell time after rotation and other parameters are set. The drive turntable rotates and stays for a certain time after rotation. The laser cutting gun head starts to realize positioning cutting. After the cutting is completed, it stays for a certain time. The drive turntable rotates again to complete the cutting of all windows in sequence.

[0030] The above is the positioning cutting of the ventilation window of the frame. It can also be controlled by a computer to link the cutting operation program of the laser cutting gun and the servo drive program of the numerically controlled drive turntable, eliminating the waiting time during the positioning cutting and the rotation of the drive turntable, shortening the production process time of the product, and improving the production efficiency.

[0031] After all the ventilation windows are cut, first use a bridge crane to lift the mandrel assembly floatingly, and then the first and second sliding tables to control the reset of the locking shaft and keep it away from the mandrel. Then control the bridge crane to lift and remove the mandrel assembly, turn it over and place it on the equal-height support. Then disassemble the left mounting plate and the right mounting plate in sequence to complete the cutting work of the ventilation window of one stator frame.

[0032] As described above, although the present invention has been shown and described with reference to specific preferred embodiments, it should not be construed as a limitation of the present invention itself. Various changes can be made to it in form and detail without departing from the spirit and scope of the present invention defined by the appended claims.

Claims

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

2. The multi-station laser cutting device for cylindrical parts according to claim 1, wherein, The installation frame includes a core shaft, a turntable, and a locking shaft. The core shaft is installed inside the cylindrical member along the axis of the cylindrical member, and its two ends respectively extend to the outside of the cylindrical member to form two extended ends on both sides. Installation plates are fixedly installed on the shaft bodies of the core shaft corresponding to the two end faces of the cylindrical member. The installation plates are provided with fixing members for fixedly connecting with the cylindrical member. The turntable is installed at the power end of the driving turntable. The locking shaft is installed on the installation base at an interval relative to the turntable, and a rotating shaft is rotatably installed at its end. One of the two extended ends of the core shaft is connected to the turntable through key fit, and the other extended end abuts against the rotating shaft of the locking shaft.

3. The multi-station laser cutting device for cylindrical parts according to claim 2, characterized in that, The installation base includes a first installation base, a second installation base, a third installation base, and an axis adjustment component. The first installation base and the second installation base are installed at intervals relative to each other, forming an installation cavity for the cylindrical member therebetween. The cylindrical member is installed in the installation cavity with its axis arranged horizontally. The locking shaft is installed on the first installation base, and the driving turntable is installed on the second installation base. The third installation base is installed on the upper side of the cylindrical member for installing the laser cutting component. The axis adjustment component is installed on the first installation base for adjusting the axis of the cylindrical member to be consistent with the rotation axis of the turntable.

4. A multi-station laser cutting device for cylindrical parts according to claim 3, characterized in that, The axis adjustment component includes a base, an adjustment bolt, a first sliding table, and a second sliding table. The first installation base is installed on the base, and an adjustment threaded hole corresponding to the base is opened at the position of the first installation base. The adjustment bolt is threadedly connected and installed in the adjustment threaded hole, and one end of it extends to the outside of the adjustment threaded hole and abuts against the base to adjust the radial height of the first installation base. The first sliding table is fixedly installed on the first installation base, and a first sliding plate is slidably installed on it along the axis of the cylindrical member. The first sliding plate is driven by a first driving member. The second sliding table is fixedly installed on the first sliding plate, and a second sliding plate is slidably installed on it in the horizontal direction along the direction perpendicular to the axis of the cylindrical member. The second sliding plate is driven by a second driving member. The locking shaft is fixedly installed on the second sliding plate.

5. A multi-station laser cutting device for cylindrical parts according to claim 2, characterized in that, One end of the set screw shaft facing the cylinder part is provided with an installation groove inward. An installation hole is provided at the bottom of the installation groove, and a cover plate covers the installation groove opening. The rotating shaft is rotatably installed in the installation groove through a first bearing and a second bearing, and one end of the rotating shaft extends to the outside of the cover plate to form a stopping end. The first bearing is located in the installation hole, and the second bearing is a bearing for load bearing and is adjacent to the side of the cover plate. A shoulder is provided at a position corresponding to the second bearing in the installation groove. The second bearing abuts against the shoulder on one side of the bearing 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 inner ring of the second bearing away from the cover plate to adjust the bearing clearance. A lubricating hole is provided at a position corresponding to the second bearing on the outer side of the set screw shaft for lubricating the second bearing. A dust-proof member is provided at a position corresponding to the second bearing on the cover plate.

6. The multi-station laser cutting device for cylindrical parts according to claim 2, characterized in that, The shaft body of the mandrel facing the set screw shaft is recessed inward along the axis to form a first positioning groove. The shaft body of the rotating shaft of the set screw shaft corresponding to the first positioning groove protrudes outward 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 mandrel. The shaft body of the mandrel facing the turntable protrudes 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 tapered second positioning groove. The mandrel is installed in the second positioning groove through the second ejector pin and abuts against the turntable. The shaft body of the mandrel located outside the second ejector pin is evenly distributed with flat key grooves along the circumference. A flat key is fixedly installed at the position of the turntable corresponding to the internal spline. When the mandrel is connected to the turntable, it is installed in the flat key groove through the flat key to form a key fit.

7. The multi-station laser cutting device for cylindrical parts according to claim 2, characterized in that, An installation cylinder is provided in the middle of the installation plate. A plurality of reinforcing plates are evenly distributed along the circumference on the outside of the installation cylinder and the inside of the installation cylinder is sleeved on the mandrel. A plurality of pin holes are provided at intervals along the cylinder body of the installation cylinder. Through holes are provided at positions of the mandrel corresponding to the pin holes. The installation plate is fixedly connected to the mandrel through a connecting pin passing through the pin holes and the through holes. A hoisting member is provided on the installation cylinder.

8. A multi-station laser cutting device for cylindrical parts according to claim 2, characterized in that, The fixing member includes a plurality of limiting blocks and a fixing pressing plate. The plurality of limiting blocks are evenly distributed along the circumference of the installation plate to form a limiting portion whose shape is adapted to the end face of the cylinder part. The fixing pressing plates are rotatably installed on the sides of the limiting blocks one by one, and a fixing bolt is provided on one side of the fixing pressing plate to fix the cylinder part to the installation plate.

9. A multi-station laser cutting device for cylindrical parts according to claim 1, characterized in that, The moving assembly includes a first guide rail, a second guide rail, a swing motor and a driving motor. The first guide rail is consistent with the axis direction of the cylinder part. The first guide rail and the second guide rail are perpendicular to each other. A first sliding plate is slidably installed on the first guide rail, and the first sliding plate is connected to the driving motor. The second guide rail is installed on the first sliding plate, and a second sliding plate is slidably installed on the second guide rail, and the second sliding plate is connected to the driving motor. The laser cutting gun is installed on the second sliding plate through the swing motor and is provided with a telescopic gun head.

10. A multi-station laser cutting device for cylindrical parts according to claim 3, characterized in that, The installation seat is installed on the installation medium. The installation medium is provided with a pit structure. The first installation seat and the second installation seat are respectively installed on both sides of the top of the pit of the pit, and the cylinder part is installed in the pit.

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