Multi-station laser cutting device for cylindrical parts

Abstract

The present application relates to a kind of cylinder piece multi-station laser cutting device, belong to cutting equipment technical field, to solve the existing technology in the production of cylinder piece stator base ventilation window, using manual cutting mode exists cutting heat leads to the deformation of base, the appearance quality of product after cutting is poor, manual production efficiency is low and the problem of high production cost;The present application includes mounting assembly, drive turntable and laser cutting assembly;Mounting assembly includes mounting bracket and mounting seat, cylinder piece is installed in mounting seat by mounting bracket rotating around cylinder piece axis, the power end of drive turntable is connected with mounting bracket, to drive mounting bracket rotating movement;Laser cutting assembly includes laser cutting gun and moving assembly, laser cutting gun moves along with the direction of cylinder piece axis direction by moving assembly movement.The laser cutting device of the present application can replace manual cutting, production efficiency is high, the appearance quality of finished product is good, reduce or do not need subsequent manual polishing, cylinder piece yield is high, production cost is low.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cutting equipment, in particular to a multi-station laser cutting device for cylindrical parts. BACKGROUND

[0002] The semi-direct drive motor is a medium-speed generator designed and developed by wind power manufacturing industry to adapt to market demand, reduce the cost of wind power equipment and upgrade the industry. Compared with the permanent magnet direct drive generator, it has the characteristics of small size, light weight and less use of rare earth permanent magnets. Under the same wind blade speed condition of the direct drive motor, the generator speed is increased through the speed increaser to achieve the purpose of multiple power generation.

[0003] Due to the increase of the operating speed of the semi-direct drive motor, the heat generated by the motor during operation increases, and the heat needs to be dissipated through air cooling or water cooling. Therefore, multiple air exchange windows are added to the design of the stator frame of the semi-direct drive motor to achieve the purpose of motor air exchange and cooling through the filter screen and air exchange system. The structure of the multiple air exchange windows of the stator frame is mainly processed by using a sample line and manually holding a cutting torch during manufacturing.

[0004] The sample line and manual cutting method has some disadvantages, such as when multiple air exchange windows are cut by a flame cutting torch, the cutting heat can easily cause the outer cylinder of the frame to deform. The appearance quality of the window edge after manual cutting is poor, and manual polishing is required, which results in high labor intensity and large cutting workload, low production efficiency and high labor cost. Therefore, a multi-window cutting device for cylindrical parts is needed to solve the problems of deformation of the frame caused by cutting heat, poor appearance quality of the product after cutting, low labor efficiency and high production cost in the production of air exchange windows for cylindrical stator frames in the prior art. SUMMARY

[0005] The present application aims to provide a multi-station laser cutting device for cylindrical parts to solve the problems raised in the background art.

[0006] To achieve the above-mentioned purpose, the present application 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 comprises a mounting frame and a mounting seat, the cylindrical part is mounted on the mounting seat by rotating the mounting frame around the cylindrical part axis, 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 comprises a laser cutting gun and a moving assembly, and the laser cutting gun moves along the direction of the cylindrical part axis through the moving assembly.

[0007] As preferred, the mounting frame comprises a mandrel, a rotary table and a tight shaft; the mandrel is fixedly installed with a mounting plate on the shaft body corresponding to the end face of the cylinder, the mounting plate is provided with a fixing member for fixed connection with the cylinder; the rotary table is installed at the power end of the driving turntable; the tight shaft is installed at the mounting seat in interval with the rotary table, and the end thereof is rotatably installed with a rotating shaft; one side of the mandrel is connected with the rotary table through key cooperation, and the other side is abutted against the rotating shaft of the tight shaft.

[0008] As preferred, the mounting seat comprises a first mounting seat, a second mounting seat, a third mounting seat and an axis adjusting assembly; the first mounting seat and the second mounting seat are oppositely and spacedly installed, and form an installation cavity of the cylinder therebetween; the cylinder is installed in the installation cavity with the axis arranged in horizontal direction; the tight shaft is installed at the first mounting seat, and the driving turntable is installed at the second mounting seat; the third mounting seat is installed at the upper side of the cylinder for installing the laser cutting assembly; the axis adjusting assembly is installed at the first mounting seat for adjusting the axis of the cylinder to be consistent with the rotating axis of the rotary table.

[0009] As preferred, the axis adjusting assembly comprises a base, an adjusting bolt, a first sliding table and a second sliding table; the first mounting seat is installed at the base, and the first mounting seat is provided with an adjusting threaded hole at the position corresponding to the base; the adjusting bolt is threadedly connected and installed at the adjusting threaded hole, and the one end thereof extends to the outside of the adjusting threaded hole and is abutted against the base for adjusting the radial height of the first mounting seat; the first sliding table is fixedly installed at the first mounting seat, and the first sliding plate is slidingly installed at the first sliding table along the axis direction of the cylinder, and the first sliding plate is driven by the first driving member; the second sliding table is fixedly installed at the first sliding plate, and the second sliding plate is slidingly installed at the second sliding table in horizontal direction along the direction perpendicular to the axis of the cylinder, and the second sliding plate is driven by the second driving member; the tight shaft is fixedly installed at the second sliding plate. The first driving member and the second driving member of the present application can adopt the commonly used driving members in the prior art to drive the sliding plate to slidingly move, such as pneumatic, hydraulic or electric driving members. In order to improve the sliding stroke accuracy of the sliding table, the present application preferably drives the sliding plate to slidingly move by a servo motor and a ball screw pair.

[0010] As preferred, the one end of the tight shaft towards the cylinder is provided with an installation groove, the groove bottom of the installation groove is provided with an installation hole, and the installation groove is covered with a cover plate; the rotating shaft is rotatably installed at the installation groove through the first bearing and the second bearing, and the one end thereof extends to the outside of the cover plate to form an abutting end; the first bearing is located at the installation hole, and the second bearing is a bearing, and the second bearing is adjacent to the cover plate side; the installation groove is provided with a shoulder at the position corresponding to the second bearing, the second bearing is abutted against the shoulder through the one side of the bearing outer ring, and the other side is abutted against the cover plate to limit the axial stringing of the rotating shaft; the second bearing inner ring of the rotating shaft is provided with a locking bolt at the side away from the cover plate for adjusting the bearing play; the outside of the tight shaft is provided with a lubricating hole at the position corresponding to the second bearing for lubricating the second bearing; the cover plate is provided with a dustproof member at the position corresponding to the second bearing.

[0011] As preferred, the shaft body of the mandrel towards the side of the tightening shaft is concave inward along the axis to form a first positioning groove; the shaft body of the rotating shaft of the tightening shaft is convex outward at the position corresponding to the first positioning groove to form a first thimble; the rotating shaft is installed in the first positioning groove through the first thimble and abuts against the mandrel; the shaft body of the mandrel towards the side of the rotating disc is convex outward along the axis to form a second thimble, and the rotating disc is concave inward at the position corresponding to the second thimble to form a tapered second positioning groove; the mandrel is installed in the second positioning groove through the second thimble and abuts against the rotating disc; the shaft body of the mandrel outside the second thimble is uniformly distributed with a plurality of key grooves along the circumference, and the rotating disc is fixedly installed with a flat key at the position corresponding to the inner spline; when the mandrel is connected with the rotating disc, the flat key is installed in the key groove to form a key cooperation.

[0012] As preferred, the middle part of the mounting plate is provided with a mounting cylinder, the outer side of the mounting cylinder is uniformly distributed with a plurality of reinforcing plates along the circumference, and the inner side is sleeved with the mandrel; the mounting cylinder is provided with a plurality of pin holes at intervals along the cylinder body, the mandrel is provided with a through hole at the position corresponding to the pin hole, and the mounting plate is fixedly connected with the mandrel through the connecting pin penetrating the pin hole and the through hole; the mounting cylinder is provided with a lifting part.

[0013] As preferred, the fixing part includes a plurality of limiting blocks and a fixed pressing plate, the plurality of limiting blocks are uniformly distributed along the circumference of the mounting plate to form a limiting part with a shape matched with the end face of the cylindrical part, the fixed pressing plate is rotatably installed on the side of the limiting block one by one, and one side of the fixed pressing plate is provided with a fixing bolt for fixing the cylindrical part to the mounting plate.

[0014] As preferred, the moving assembly includes a first guide rail, a second guide rail, an oscillating 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, the first guide rail is slidingly installed with a first sliding plate, the first sliding plate is connected with the driving motor, the second guide rail is installed on the first sliding plate, the second guide rail is slidingly installed with a second sliding plate, and the second sliding plate is connected with the driving motor; the laser cutting gun is installed on the second sliding plate through the oscillating motor, and is provided with a telescopic gun head.

[0015] As preferred, the mounting seat is installed on the mounting medium, the mounting medium is provided with a pit structure, the first mounting seat and the second mounting seat are respectively installed on both sides of the top of the pit, and the cylindrical part is installed in the pit.

[0016] Beneficial effects:

[0017] 1.The laser cutting device is characterized in that a mounting assembly, a driving turntable and a laser cutting assembly are arranged; the mounting assembly comprises a mounting frame and a mounting seat, a cylindrical part is rotatably mounted on the mounting seat through the mounting frame along the axis of the cylindrical part, and the driving end of the driving turntable is connected with the mounting frame to drive the mounting frame to rotate. The laser cutting gun is arranged to move along the axis of the cylindrical part, and the driving turntable drives the cylindrical part to rotate, so that the laser cutting gun cuts the cylindrical part according to the cutting requirements to form a gas exchange window. The laser cutting device can replace manual cutting to reduce the workload of personnel and improve the production efficiency. In addition, the laser cutting can replace the flame cutting to improve the appearance quality of the cylindrical part, reduce or eliminate the need for subsequent polishing, and the laser cutting can also avoid the deformation of the cylindrical part caused by cutting heat. The cylindrical part has high yield and low production cost.

[0018] 2.Based on the foregoing, the cylindrical part of the present application is a semi-direct drive motor stator base, which has large volume and weight. In order to ensure the stability of the mounting of the cylindrical part, the mounting frame comprises a mandrel, which is mounted on the inner side of the cylindrical part along the axis of the cylindrical part. The shaft body corresponding to the two side end faces of the cylindrical part is fixedly provided with a mounting plate, and the mounting plate is provided with a fixing part for fixed connection with the cylindrical part. The mandrel is installed along the axis of the cylindrical part, and the mounting plate is arranged at a position corresponding to the two side end faces of the cylindrical part for fixed connection with the cylindrical part. The cylindrical part is connected with the mandrel as a whole through the mounting plate, and the mandrel is coaxially rotated with the cylindrical part when the driving turntable drives it to rotate, so as to improve the cutting accuracy.

[0019] 3.Based on the foregoing, in order to ensure that the rotation axis of the mandrel is consistent with that of the driving turntable, a turntable and a tight shaft are arranged. The turntable is fixedly installed on the driving end of the driving turntable, the tight shaft is spaced apart from the turntable and is rotatably installed on the mounting seat, and the shaft of the tight shaft is rotatably installed on the end portion. One side of the two sides of the mandrel is connected with the turntable through a key, and the other side is abutted to the shaft of the tight shaft. The rotation axis of the mandrel is consistent with that of the driving end of the driving turntable. The tight shaft abuts to the mandrel to fix and position the mandrel quickly, so as to realize quick installation. The installation precision is high, and the problem of cumulative installation error caused by too many installation parts is avoided.

[0020] 4. On the basis of the foregoing, when the specification size of the cylindrical piece changes, causing the mandrel axis and the cylindrical piece length to change, in order to ensure that the mandrel is adapted to the rotation axis of the driving turntable, the application sets an axis adjusting assembly, which includes a base, adjusting bolts, a first sliding table and a second sliding table, to adjust the fastening shaft in the horizontal direction and the radial direction, so that the axis of the fastening shaft is consistent with the rotation axis of the driving turntable. The first mounting seat is mounted on the base through adjusting bolts, and the height of the first mounting seat in the radial direction is adjusted through adjusting bolts. The first mounting seat is adjusted in position in the direction of the mandrel axis and the direction perpendicular to the mandrel axis on the horizontal plane through the first sliding table and the second sliding table, to be suitable for cylindrical pieces of different specification sizes. It should be noted that the position adjustment in the direction of the mandrel axis is not only suitable for the adaptability adjustment when the specification size of the cylindrical piece changes, but also can be used to drive the fastening shaft to abut the mandrel against the turntable, to ensure that the mandrel does not displace during cutting, so that the cylindrical piece is installed stably, and the cutting quality is improved.

[0021] 5. On the basis of the foregoing, considering that the mandrel loaded with the cylindrical piece is abutted against the turntable by the fastening shaft, in order to ensure that the fastening shaft is abutted against the mandrel along the axis, and the mandrel can rotate normally. The application sets an installation groove on the fastening shaft, and a rotating shaft is rotatably installed through bearings. The groove bottom of the installation groove is provided with an installation hole, and the installation groove opening is covered with a cover plate. The rotating shaft is rotatably installed in the installation hole through a first bearing, and is rotatably installed near the installation groove opening through a second bearing. Since the rotating shaft also bears the function of abutting the mandrel, the second bearing is a load bearing, and a double-row bearing is preferably selected. In order to ensure the stability of the use of the second bearing, the application sets 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 play of the inner ring of the second bearing, to ensure the stability of the use of the second bearing. In addition, the application sets an oiling hole on the fastening shaft and sets a dustproof piece on the cover plate, to improve the service life of the second bearing and reduce the operating cost.

[0022] 6. On the basis of the foregoing, the shaft body of the mandrel towards the side of the tight shaft is concave along the axis to form a first positioning groove; the shaft body of the tight shaft corresponding to the first positioning groove is convex to form a first thimble; the shaft is installed in the first positioning groove through the first thimble and abuts against the mandrel; the shaft body of the mandrel towards the side of the turntable is convex to form a second thimble, and the position of the turntable corresponding to the second thimble is concave to form a tapered second positioning groove. The mandrel is abutted against the turntable through the thimble type abutting mode, so that the stable contact between the mandrel and the turntable does not displace during the cutting process, and the axis of the mandrel is always consistent with the axis of the turntable during rotation. At the same time, the thimble type abutting mode can realize quick positioning and installation of the tight shaft, the mandrel and the turntable, improve the assembly efficiency, and further 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 application adopts the key groove on the mandrel and the flat key on the turntable to form a key connection, so as to ensure that the driving force can be efficiently transmitted to the mandrel.

[0023] 7. On the basis of the foregoing, the mounting plate and the mandrel of the present application adopt a split type connection mode, wherein the mounting plate is provided with a mounting cylinder, and 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 mounting cylinder also increases the mounting area with the mandrel to improve the mounting stability between the two. In order to improve the fixed connection between the mounting plate and the cylindrical part, the present application sets a limiting block and a fixed pressing plate on the mounting plate to realize the uniform distribution of the limiting block along the circumference of the mounting plate to form a limiting part that matches the shape of the end face of the cylindrical part, so as to ensure the quick positioning and installation of the cylindrical part and the mounting plate during installation, and the cylindrical part is fixedly installed on the mounting plate through the fixed pressing plate. The present application adopts a split type connection mode to install the rack, so as to realize the quick positioning and installation of the rack and the cylindrical part, reduce the difficulty of component installation, and improve the production efficiency.

[0024] 8. The stator seat of the semi-direct drive motor of the present application is a cylindrical structure, and the air exchange windows to be opened are located on the side wall of the cylindrical part, so the actual air exchange window is a circular arc structure, and multiple air exchange windows are located at different positions of the cylindrical part. The present application sets a moving assembly including a first guide rail, a second guide rail, an oscillating motor and a driving motor, and the laser cutting gun is slidably installed on the third mounting seat through the first guide rail and the second guide rail to realize the position adjustment of the laser cutting gun in the horizontal direction in the front, rear, left and right directions to cut air exchange windows at different positions. During cutting, the laser cutting gun is matched with the rotation of the cylindrical part to cut the circular arc structure air exchange window. In order to ensure that the cutting direction of the gun head is always at a certain angle with the cylindrical part, the present application sets an oscillating motor to drive the gun head to oscillate, so as to ensure that the cutting angle remains consistent to improve the cutting quality.

[0025] 9. On the basis of the foregoing, the mounting seat of the present application is mounted on a mounting medium, the mounting medium is provided with a pit structure, the first mounting seat and the second mounting seat 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 mounting space is reduced, and the construction safety and convenience are ensured. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 Structure schematic diagram of the cylindrical member multi-station laser cutting device of the embodiment;

[0027] Figure 2 Structure top view of the cylindrical member multi-station laser cutting device of the embodiment;

[0028] Figure 3 Structure side view of the cylindrical member multi-station laser cutting device of the embodiment;

[0029] Figure 4 Explosion diagram of the mounting frame and the mounting structure of the cylindrical member of the cylindrical member multi-station laser cutting device of the embodiment;

[0030] Figure 5 Structure sectional view of the fastening shaft of the cylindrical member multi-station laser cutting device of the embodiment. DETAILED DESCRIPTION

[0031] The technical solutions of the present application will be described in detail below with reference to the drawings, but the protection scope of the present application is not limited to the embodiments.

[0032] Please refer to Figures 1-5 , the present embodiment provides a cylindrical member multi-station laser cutting device, which comprises a mounting assembly, a numerical control driving turntable 12 and a laser cutting assembly; the mounting assembly comprises a mounting frame and a mounting seat, a cylindrical member A is mounted on the mounting seat through the mounting frame and rotates around the cylindrical member axis, the power end of the numerical control driving turntable 12 is connected with the mounting frame to drive the mounting frame to rotate; the laser cutting assembly comprises a laser cutting gun 130 and a moving assembly, the laser cutting gun moves along the direction of the cylindrical member axis through the moving assembly.

[0033] The mounting frame of the embodiment comprises a mandrel 11, a rotating disc 20 and a clamping shaft 7; the mandrel 11 is mounted inside the cylindrical member along the axis of the cylindrical member, the shaft body of the mandrel is fixedly mounted with a mounting plate corresponding to the end faces of the two sides of the cylindrical member, the mounting plate is provided with a fixing member for fixed connection with the cylindrical member; the rotating disc 20 is mounted at the power end of the numerical control driving turntable; the clamping shaft 7 is mounted at the mounting seat in a spaced manner relative to the rotating disc, and the end portion of the clamping shaft is rotatably mounted with a rotating shaft 33; one side of the two sides of the mandrel is connected with the rotating disc through key cooperation, and the other side is abutted to the rotating shaft of the clamping shaft. The mounting plates of the two sides of the mandrel of the embodiment are defined as a left mounting plate 8 and a right mounting plate 9, wherein the left mounting plate is a frame structure welded by square steel and steel plates, and a mounting cylinder is welded at the center of the left mounting plate, and three connecting beams welded by steel plates are spaced in the circumferential direction of the axis of the mounting cylinder, and a plurality of square steels are welded between the two adjacent connecting beams to form a reinforcing beam. Since the volume and weight of the cylindrical member of the embodiment are large, the left mounting plate is provided in a two-semi-circular structure and is fixedly connected through connecting bolts 16 to form a left mounting plate of circular steel structure. The right mounting plate is connected with the rotating disc, and in order to improve the bearing capacity of the right mounting plate, the right mounting plate comprises a mounting plate and a mounting cylinder, wherein six reinforcing plates are arranged along the circumference of the mounting cylinder to form an integral whole, and the mounting plate and the mounting cylinder are connected into the right mounting plate through connecting bolts. The mounting cylinder of the left mounting plate and the right mounting plate of the embodiment is provided with two pin holes along the cylinder body, and the mandrel is provided with a through hole at a position corresponding to the pin holes, and when the left mounting plate 8, the right mounting plate 9 and the mandrel 11 are assembled, the three are fixedly and positionally mounted through the connecting pins 10 penetrating the pin holes and the through hole respectively.

[0034] In order to fixedly connect the mounting plate with the cylindrical member, the connecting beams of the left mounting plate of the embodiment are respectively mounted with limit blocks 17 and fixed pressing plates 18, the limit blocks are uniformly distributed along the circumference of the mounting plate to form a limit portion with a shape matched with the end face of the cylindrical member, and the fixed pressing plates 18 are rotatably mounted on the side of the limit blocks, and one side of the fixed pressing plates is provided with a fixing bolt 26 and a mounting washer 27 for fixing the cylindrical member to the mounting plate. The right mounting plate is also provided with the same limit blocks and fixed pressing plates, and the left mounting plate is assembled by two semi-circular structures. Therefore, the limit blocks and the fixed pressing plates 18 are arranged on the four connecting beams of the left mounting plate except the connecting beams at the connecting portions, and the hexagonal bolts 26 and the mounting washers 27 are mounted on the fixed mounting plate for pressing and fixing the cylindrical member. The right mounting plate is provided with three limit blocks 17 and fixed pressing plates 18 along the circumference. In addition, in order to facilitate hoisting and assembling components, the left mounting plate of the embodiment is provided with four hoisting positioning holes 15, and the right mounting plate is fixedly mounted with a lifting ring 19 for hoisting.

[0035] The mounting seat of the embodiment comprises a first mounting seat 2, a second mounting seat 14, a third mounting seat (not shown) and an axis adjusting assembly; due to the large volume and weight of the cylinder, in order to facilitate the assembly of the components of the mounting frame and reduce the floor space of the cutting device, the mounting seat of the embodiment is installed on the construction ground with a pit, in order to improve the installation stability of the mounting seat and the construction ground, the construction ground of the embodiment adopts a concrete ground B which has a concrete pit structure, the first mounting seat 2 and the second mounting seat 14 are installed on the two sides of the pit top of the concrete ground in the pit, forming an installation cavity of the cylinder between them; the first mounting seat 2 is fixedly installed on the concrete ground by a hexagonal bolt 25, in order to improve the installation stability, a base 23 is installed between the first mounting seat and the concrete ground. The second mounting seat is provided with a pad plate on the concrete ground. The first mounting seat 2 and the second mounting seat 14 are horizontally fixed to the concrete ground by the sleeve reinforced expansion anchor bolt 1. The cylinder is installed in the installation cavity with the axis in the horizontal direction; the tight shaft is installed on the first mounting seat by an internal hexagonal cylindrical head screw 4, and the numerical control driving turntable is fixedly installed on the second mounting seat by a cylindrical pin as a positioning pin and an internal hexagonal cylindrical head screw 13 as a fixing bolt; the third mounting seat is installed on the upper side of the cylinder for installing the laser cutting assembly; the axis adjusting assembly is installed on the first mounting seat for adjusting the axis of the cylinder to be consistent with the axis of the turntable. Among them, the axis adjusting assembly of the embodiment comprises a base 23, an adjusting bolt 24, a first sliding table 5 and a second sliding table 6. The adjusting bolt of the embodiment adopts an internal hexagonal cylindrical head screw, the first mounting seat of the embodiment is provided with an adjusting threaded hole, the adjusting bolt 24 is threadedly installed in the adjusting threaded hole, and when the adjusting bolt is rotated along the adjusting threaded hole, one end thereof extends to the outside of the adjusting threaded hole and abuts against the base, so as to adjust the radial height of the first mounting seat and control the height of the shaft axis of the tight shaft to be consistent with the height of the axis of the numerical control driving turntable. The first sliding table 5 and the second sliding table 6 of the embodiment are both numerical control sliding tables, wherein the first sliding table fixed seat is installed on the first mounting seat by a cylindrical pin 3 as a positioning pin and is fixedly connected with the first mounting seat by an internal hexagonal cylindrical head screw 4. The first sliding table is slidably installed with a first sliding plate in the direction of the axis of the cylinder, and the first sliding table is fixedly installed with a first numerical control servo motor 40 and a ball screw pair 41, the power end of the first numerical control servo motor is connected with the screw of the ball screw pair, and the nut end of the ball screw pair is fixedly connected with the first sliding plate. The second sliding table is installed on the first sliding plate by a cylindrical pin as a positioning pin and is fixedly connected with the first sliding plate by an internal hexagonal cylindrical head screw 4. The second sliding table is slidably installed with a second sliding plate in the direction perpendicular to the axis of the cylinder, and the second sliding table is fixedly installed with a second numerical control servo motor 400 and a ball screw pair 41, the power end of the second numerical control servo motor is connected with the screw of the ball screw pair, and the nut end of the ball screw pair is fixedly connected with the second sliding plate.The tight shaft body 29 is fixedly installed on the second slide plate of the second slide table by the support plate 28 through a hexagonal head cylinder screw 30 and a washer 31.

[0036] The tight shaft body 29 of the embodiment is internally provided with a mounting groove at the side end of the cylinder, the groove bottom is provided with a mounting hole, and the mounting groove is externally provided with a cover plate 39 covered by the hexagonal head cylinder screw. The rotating shaft 33 is rotatably installed in the mounting groove through the first bearing 32 and the second bearing 36, and one end of the rotating shaft 33 extends to the outside of the cover plate to form a stop end. The first bearing is a single-row needle bearing, which is located in the mounting hole. The second bearing is a double-row tapered roller bearing, which is supported in the cavity of the mounting groove near the cover plate. A shoulder is formed at the position corresponding to the second bearing in the mounting groove. The second bearing is stopped at the shoulder through one side of the bearing outer ring, and is stopped at the cover plate 39 through the optional spacer sleeve 38 on the other side, so as to limit the axial movement of the rotating shaft. Two circular 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 a washer is used to adjust the bearing play. A lubrication hole is formed on the outside of the tight shaft body at the position corresponding to the second bearing, and a straight-through type pressure injection oil cup 37 is installed on the outside of the lubrication hole to regularly add lubricating grease to lubricate the second bearing. The cover plate 39 is provided with an oil felt 42 at the position corresponding to the second bearing to prevent dust from entering the mounting groove.

[0037] The shaft body of the mandrel 11 towards the tight shaft is recessed inward along the axis to form a first positioning groove. The shaft body of the rotating shaft of the tight shaft corresponding to the first positioning groove is outwardly protruded to form a first thimble. The rotating shaft is installed in the first positioning groove through the first thimble and is stopped at the mandrel. The shaft body of the mandrel towards the rotating disc is outwardly protruded along the axis to form a second thimble. The rotating disc is inwardly recessed at the position corresponding to the second thimble to form a 60° inner tapered second positioning groove. The mandrel is installed in the second positioning groove through the second thimble and is stopped at the rotating disc. The shaft body of the mandrel outside the second thimble is uniformly distributed with flat key grooves along the circumference. The rotating disc is fixedly installed with a flat key 22 at the position corresponding to the inner spline through a disc head screw 21. When the mandrel is connected with the rotating disc, the flat key is installed in the flat key groove to form a key cooperation.

[0038] The moving assembly of the embodiment comprises a first guide rail, a second guide rail, an oscillating motor and a driving motor. The first guide rail is consistent with the axis direction of the cylinder. 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 with 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 with the driving motor. The laser cutting gun is installed on the vertical slide plate through the oscillating motor, and the laser cutting gun is provided with a telescopic gun head.

[0039] Working principle: the multi-station laser cutting device of the cylindrical part in this embodiment is assembled with the mounting frame and the cylindrical part first when in use. The left mounting plate and the right mounting plate are hoisted and fixed to the two side end faces of the cylindrical part by the bridge crane, the cylindrical part is fixed and pressed by the fixed pressing plate on the left mounting plate and the right mounting plate, then the mandrel is installed inside the cylindrical part, and the two ends thereof penetrate from the installation cylinder of the left mounting plate and the right mounting plate. Then the left mounting plate, the right mounting plate and the mandrel are fixedly connected by the connecting pin. Then the mandrel is hoisted and adjusted to be horizontal by the crane, and then the mandrel with the fixed cylindrical part is hoisted and transferred to the installation cavity.

[0040] Then the mandrel is connected and installed with the rotating disc of the numerical control driving turntable. Specifically, the first numerical control servo motor and the second numerical control servo motor are started to control the first sliding table and the second sliding table to adjust the rotating shaft of the clamping shaft to be connected with the mandrel until the first thimble of the rotating shaft of the clamping shaft, the first positioning groove of the mandrel and the second thimble of the rotating disc are tightly abutted. It should be noted that during the connection process, in order to ensure the key connection between the mandrel and the rotating disc, the numerical control driving turntable motor needs to be started to drive the rotating disc to rotate, so that the flat key groove of the mandrel is connected with the flat key of the rotating disc, and the mandrel is abutted on the rotating disc by the clamping shaft.

[0041] After the connection of the mandrel, the clamping shaft and the rotating disc is completed, the installation condition is checked. If it is found that the cylindrical part is inclined 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 cutting of the air exchange window to be inclined), the first sliding table and the second sliding table are adjusted to fine-tune the axis of the mandrel, the hexagonal bolt is loosened to adjust the inner hexagonal cylindrical head screw for radial fine-tuning, and the axis of the mandrel is controlled and ensured to be parallel to the cutting direction of the laser cutting machine.

[0042] After the installation is completed, the numerical control driving turntable is started, and the forward and reverse test operation is performed for one week according to the program to check whether the mandrel, the clamping shaft and the rotating disc are in good contact and have no interference. After the check is normal, the cutting starting point is found on the cylindrical part according to the cutting program, and the cutting starting point is rotated above the driving turntable by the numerical control driving 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 to adopt a multi-segment program, the running interval time is set between each segment program, the numerical control driving turntable button is started synchronously to cut the program, the rotation angle, the residence time after rotation and other parameters are set, the driving turntable is rotated and stopped for a certain period of time, the laser cutting gun head starts to realize positioning cutting, and after the cutting is completed, the driving turntable is rotated again to sequentially complete the cutting of all windows.

[0043] The above is the positioning and cutting of the air exchange window of the frame. The cutting operation program of the laser cutting gun, the numerical control driving turntable servo driving program can be linked through computer control to remove the waiting time in the positioning and cutting and driving turntable rotation process, shorten the product production process time and improve the productivity.

[0044] After the cutting of all the air exchange windows is completed, the mandrel assembly is first lifted by the bridge crane, and then the first sliding table and the second sliding table are lifted to control the reset and distance of the tight shaft from the mandrel. Then the bridge crane is controlled to lift away the mandrel assembly and turn over to be placed on the equal-height support, and then the left mounting plate and the right mounting plate are sequentially disassembled to complete the cutting of the air exchange window of one stator frame.

[0045] As above, although the present application has been shown and described with reference to certain preferred embodiments thereof, it is to be understood that such is by way of illustration and not of limitation. Various substitutions and modifications can be made thereto without departing from the spirit and scope of the present application as defined in 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. The mounting bracket includes a mandrel, a turntable, and a set shaft; the mandrel is mounted on the inner side of the cylindrical component along the axis of the cylindrical component; a mounting plate is fixedly mounted on the shaft of the mandrel for fixed connection with the cylindrical component; the turntable is mounted on the power end of the drive turntable; the set shaft is mounted on the mounting base at a distance from the turntable, and a rotating shaft is rotatably mounted on its end; one side of the mandrel is connected to the turntable, and the other side abuts against the rotating shaft of the set shaft; The mounting base includes a first mounting base and an axis adjustment assembly. The locking shaft is mounted on the first mounting base, and the axis adjustment assembly is mounted on the first mounting base to adjust the axis of the cylindrical component to be consistent with the axis of rotation of the turntable. 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 threaded into 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, 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 a horizontal direction perpendicular to the axis of the cylindrical component, driven by a second driving member. The set shaft is fixedly installed on the second sliding plate. The fixed shaft has an inwardly extending mounting groove at one end facing the cylindrical component. The bottom of the mounting groove has a mounting hole, and a cover plate covers the mounting 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 adjacent to the cover plate. A shoulder is provided in the mounting groove at a position corresponding to the second bearing. The second bearing abuts against the shoulder on one side via its outer ring and against the cover plate on the other side to limit the axial movement of the rotating shaft.

2. The multi-station laser cutting device for cylindrical parts according to claim 1, characterized in that, A mounting plate is fixedly installed on the shaft body corresponding to the two end faces of the cylindrical part. The mounting plate is provided with a fixing member for fixed connection with the cylindrical part. One side of the two sides of the mandrel is connected to the turntable by keying, and the other side abuts against the rotating shaft of the fixed shaft.

3. The multi-station laser cutting device for cylindrical parts according to claim 2, characterized in that, The mounting base includes a second mounting base and a third mounting base; the first mounting base and the second mounting base are installed at a distance from 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 drive turntable is mounted on the second mounting base; the third mounting base is mounted on the upper side of the cylindrical component for mounting the laser cutting assembly.

4. The multi-station laser cutting device for cylindrical parts according to claim 1, characterized in that, A locking bolt is installed on the side of the inner ring of the second bearing on the rotating shaft away from the cover plate to adjust the bearing clearance; a lubrication hole is opened on the outer side of the fixed shaft at the position corresponding to the second bearing to lubricate the second bearing; a dustproof component is provided on the cover plate at the position corresponding to the second bearing.

5. The multi-station laser cutting device for cylindrical parts according to claim 2, characterized in that, 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.

6. The multi-station laser cutting device for cylindrical parts according to claim 2, characterized in that, 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.

7. The multi-station laser cutting device for cylindrical parts according to claim 2, characterized in that, 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.

8. The multi-station laser cutting device for cylindrical parts according to claim 1, characterized in that, 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.

9. A multi-station laser cutting device for cylindrical parts according to claim 3, characterized in that, 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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