CN116037749A - Large-scale numerical control vertical four-spinning-wheel spinning machine - Google Patents

Large-scale numerical control vertical four-spinning-wheel spinning machine Download PDF

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Publication number
CN116037749A
CN116037749A CN202310026851.2A CN202310026851A CN116037749A CN 116037749 A CN116037749 A CN 116037749A CN 202310026851 A CN202310026851 A CN 202310026851A CN 116037749 A CN116037749 A CN 116037749A
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axial
spinning
radial
sliding
frame
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CN116037749B (en
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刘阵
张政
吴加成
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Yangzhou Dean Technology Co ltd
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Yangzhou Dean Technology Co ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/14—Spinning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D37/00—Tools as parts of machines covered by this subclass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D37/00—Tools as parts of machines covered by this subclass
    • B21D37/16—Heating or cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D37/00—Tools as parts of machines covered by this subclass
    • B21D37/18—Lubricating, e.g. lubricating tool and workpiece simultaneously
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D45/00—Ejecting or stripping-off devices arranged in machines or tools dealt with in this subclass
    • B21D45/02—Ejecting devices

Abstract

The invention discloses a large-scale numerical control vertical four-spinning-wheel spinning machine, and belongs to the field of spinning machines. The invention discloses a four-wheel spinning machine, which comprises a rotary wheel slide pillow assembly, a stand column frame and a lathe bed assembly, wherein the stand column frame is provided with four stand columns which are distributed in a rectangular mode, the lathe bed assembly is arranged at the lower part of the stand column frame, and the rotary wheel slide pillow assembly is provided with four groups of axial sliding racks which are arranged in a cross shape. Through reasonable structural layout design, make whole be the rotatory wheel slide pillow assembly axial slip of "cross" install on four stand frames of rectangle, stand frame overall structure stability is stronger, and axial direction's of axial guide rail mounting bolt is difficult for receiving the shearing force, and the radial feeding control precision of rotatory wheel slide pillow assembly axial feeding and rotatory wheel on the stand frame is high, has improved the spinning machining precision and the spinning operating pressure of large-scale vertical four-spinning wheel spinning machine greatly, can satisfy the processing needs of large-scale spinning piece. In addition, the spinning machine has the advantages of convenience in processing and manufacturing, convenience in transportation and assembly, high assembly precision and the like.

Description

Large-scale numerical control vertical four-spinning-wheel spinning machine
Technical Field
The invention relates to a vertical spinning machine, in particular to a large-scale numerical control vertical four-spinning-wheel spinning machine.
Background
The spinning forming is a plastic processing method for forming a rotary part by applying pressure to a rotary blank by using a spinning tool to generate continuous local plastic deformation, and plays an important role in the field of metal precision processing such as aerospace, military industry and the like. The equipment adopted in the spinning forming process is called a spinning machine, and can be divided into a vertical spinning machine and a horizontal spinning machine according to the lathe bed structure, and can be divided into single spinning wheels, double spinning wheels, three spinning wheels, four spinning wheels and ball spinning machines according to the number of spinning wheels. The dual-spinning wheel spinning machine and the triple-spinning wheel spinning machine are common, such as a vertical servo hydraulic dual-wheel hub spinning machine disclosed in China patent application No. 202011458826.4 is the dual-spinning wheel spinning machine, a vertical spinning machine disclosed in China patent No. ZL201510023197.5 is the triple-spinning wheel spinning machine, and a vertical spinning machine disclosed in China patent No. ZL201811449636.9 is the triple-spinning wheel spinning machine. Four spinning wheels of the vertical four-spinning-wheel spinning machine can be uniformly distributed around the main shaft, compared with the double-spinning-wheel spinning machine and the three-spinning-wheel spinning machine, the pressure of the four-spinning-wheel spinning machine to a workpiece is more balanced, the product manufacturing precision is higher, and the vertical opposite-wheel spinning equipment disclosed in 'pull-down vertical four-spinning-wheel numerical control powerful spinning machine' disclosed in Chinese patent number ZL201020627673.7 and 'vertical opposite-wheel spinning equipment' disclosed in Chinese patent number ZL201811179866.8 are all four-spinning-wheel spinning machines.
The axial feeding motion of the multiple groups of spinning wheels of the vertical spinning machine has two structural forms of independent control and synchronous control. The independent control of the spinning roller is to independently install each group of spinning roller mechanisms on a spinning machine frame, each group of spinning roller mechanisms is controlled by a group of axial driving devices, axial feeding movement of each group of spinning rollers can be independently controlled, and synchronous lifting movement of each group of spinning rollers can be realized, but the mode is difficult to ensure that the movement of each group of spinning rollers is completely synchronous due to the synchronism of the axial driving devices, assembly manufacturing errors and other factors, so that the pressure of each group of spinning rollers is unbalanced in the spinning process, and the spinning roller is generally suitable for spinning machines with low spinning pressure. The spinning roller synchronous control is generally to install each group of spinning roller mechanism on an integral axial sliding frame, and drive each group of spinning roller to synchronously lift and move by the axial lifting and descending movement of the axial sliding frame, so that each group of spinning roller has good lifting and descending synchronism and higher integral stability, but the axial sliding frame needs to occupy the height space of the spinning machine, and is positioned right above the spinning die, and the descending position of the axial sliding frame is blocked by the spinning die, so that the axial lifting and descending stroke of the spinning roller is shorter; moreover, for the large-scale vertical spinning machine, the occupied area is close to 7m multiplied by 7m, the whole axial sliding frame is large in size and weight, and the processing, the manufacturing and the whole transportation are very difficult.
In addition, as the large-scale vertical type four-wheel spinning machine has large size and weight and high processing precision requirement, the structural design of the existing vertical type four-wheel spinning machine is difficult to meet the requirements of manufacturing, assembling, transportation and the like, and the following technical difficulties are needed to be overcome:
1. the stability of the upright column frame structure of the large-scale vertical four-spinning-wheel spinning machine determines the working precision and the working pressure of the spinning wheel, and the vertical guide rail between the axial sliding frame and the upright column frame is easy to receive a reaction force parallel to the guide rail mounting surface when the spinning wheel works, and the reaction force enables the mounting bolt of the vertical guide rail to be easily broken due to the shearing force.
2. The top cover on the upright post frame of the large-scale vertical four-wheel spinning machine is large in size, so that the top cover of the existing integral structure is large in design and processing difficulty, and is difficult to transport and assemble.
3. The spindle of the vertical four-wheel spinning machine has high rotation precision requirement, the spindle of the existing vertical spinning machine mainly adopts cylindrical ball bearings at the upper end and the lower end, and adopts thrust cylindrical roller bearings in the middle, so that the axial centering effect of the spindle design is poor, and the spindle circular runout error is large; in addition, the installation and the disassembly of the main shaft and the bearings are difficult, and particularly, when the bearings are required to be selected according to the requirements of the rotation speed, the bearing capacity, the centering precision and the like of the main shaft, the specification and the size of each bearing are different, so that the disassembly and the assembly of the bearings are more difficult.
4. In the spinning process, the spinning roller and the rotating shaft thereof work in a high-temperature environment for a long time, and the spinning roller and the rotating shaft thereof bear the extrusion and friction action with a workpiece, so that great test is brought to the service life and the working stability of the spinning roller and the rotating shaft thereof; the existing rotary wheel assembly is poor in heat dissipation and lubrication effects, and the rotary wheel bearing is easy to damage.
5. For a four-spinning-wheel spinning machine, axial lifting movement of a spinning wheel is generally controlled by a hydraulic cylinder, and synchronous control difficulty of a plurality of hydraulic cylinders is high, and contractility of a hydraulic pipeline and hydraulic transmission distance can influence synchronous control precision of the hydraulic cylinders.
6. The rotary wheel slide pillow assembly of the existing spinning machine is only used for driving the rotary wheel to move axially and radially, has single function and lacks auxiliary demoulding and die repairing functions of workpieces.
Disclosure of Invention
1. Technical problem to be solved by the invention
The invention aims to overcome the defects of poor structural stability, low processing precision and small spinning pressure of the traditional vertical four-spinning roller spinning machine, and provides a large-scale numerical control vertical four-spinning roller spinning machine, by adopting the technical scheme of the invention, the whole cross-shaped spinning roller slide pillow assembly is axially and slidably arranged on a rectangular four-upright post frame through reasonable structural layout design, the integral structure stability of the upright post frame is stronger, the mounting bolts of an axial guide rail are not easily subjected to shearing force, the axial feeding of the spinning roller slide pillow assembly on the upright post frame and the radial feeding control precision of a spinning roller are high, the spinning processing precision and the spinning working pressure of the large-scale numerical control vertical four-spinning roller spinning machine are greatly improved, and the processing requirements of large-scale spinning pieces can be met;
The second aim of the invention is to overcome the defects of large processing, transportation and assembly difficulties and the like caused by large size and weight of component members of the existing large vertical four-wheel spinning machine, the upper top cover of the upright column frame, the axial sliding frame of the spinning wheel and other components are assembled by adopting an assembly structure design, meanwhile, the upright column frame is assembled with the main lathe bed by adopting a right-angle connecting piece, and the connection among all the components adopts a positioning key to position and transmit pressure;
the third purpose of the invention is to overcome the defects of poor rotation precision, inconvenient disassembly and assembly and the like of the main shaft of the existing large-scale vertical four-wheel spinning machine, and the main shaft sleeve adopts a detachable structure of an upper shaft sleeve and a lower shaft sleeve, thereby facilitating the installation and the disassembly of a main shaft bearing; the main shaft is rotatably arranged in the main shaft sleeve from top to bottom through the radial bearing, the axial bearing and the centering bearing, so that the rotation precision and the bearing capacity of the main shaft can be ensured, and the machining precision of the large-scale vertical four-wheel spinning machine is improved;
the fourth purpose of the invention is to overcome the problem of poor action synchronism of a plurality of axial driving oil cylinders of the existing vertical spinning machine, through the inverted design of the axial driving oil cylinders and the simultaneous lifting control of the axial driving oil cylinders by utilizing a synchronous lifting hydraulic control system, the hydraulic control paths of four axial driving oil cylinders are equal, thereby ensuring the working synchronism and consistency of the four axial driving oil cylinders, improving the control precision of the axial driving oil cylinders, ensuring better lifting balance of an axial sliding frame of the large numerical control vertical four-spinning machine and further improving the spinning processing precision and stability;
The fifth purpose of the invention is to solve the problem of poor heat dissipation and lubrication effects of the spinning wheel bearing, and the circulating cooling loop and the circulating cooling lubrication loop are respectively arranged on the spinning wheel seat, so that the spinning wheel assembly can be cooled and lubricated in a circulating way, the working temperature of the spinning wheel is effectively reduced, the working stability and the service life of the bearing are improved, and the machining precision of a large-scale four-spinning wheel spinning machine is further improved; meanwhile, the rotating wheel shaft is arranged in the bearing chamber of the rotating wheel seat through the rotating wheel shaft centering bearing, the rotating wheel shaft axial bearing and the rotating wheel shaft radial bearing, so that the rotating precision and the bearing capacity of the rotating shaft can be ensured;
the invention aims to provide a large numerical control vertical four-spinning-wheel spinning machine with a demoulding function and a mould repairing function, wherein a demoulding unloading mechanism and a mould repairing mechanism are integrated at the bottom of an axial sliding frame, so that the axial feeding movement of a spinning slide pillow assembly of the vertical four-spinning-wheel spinning machine can be utilized to realize demoulding of spinning workpieces and repairing of spinning moulds, and the functionality and the operation convenience of the large numerical control vertical four-spinning-wheel spinning machine are improved.
2. Technical proposal
In order to achieve the above purpose, the technical scheme provided by the invention is as follows:
The invention relates to a large-scale numerical control vertical four-spinning-wheel spinning machine, which comprises a spinning-wheel slide pillow assembly, a stand column frame and a lathe bed assembly,
the upright post frame is provided with four upright posts which are in rectangular distribution, the tops of the four upright posts are fixedly connected through a rectangular upper top cover, each upright post comprises a lathe bed connecting section positioned at the lower part and a vertical guide rail mounting section positioned above the lathe bed connecting section, the vertical guide rail mounting section is provided with an inner concave part, two vertical guide rail mounting surfaces which are perpendicular to each other are formed in the inner concave part, the inner concave part of each upright post faces the inner side of the upright post frame, and the adjacent vertical guide rail mounting surfaces in the two adjacent upright posts are parallel; the vertical guide rail mounting surfaces are fixedly arranged on the axial guide rail;
the main lathe bed assembly is arranged at the lower part of the upright post frame and comprises a main lathe bed and a main shaft arranged at the center of the main lathe bed, and the main lathe bed is fixedly connected with lathe bed connecting sections of four upright posts respectively;
the rotary wheel sliding pillow assembly comprises an axial sliding frame, sliding frame connecting pieces, rotary wheel assemblies, axial driving oil cylinders, radial sliding frames and radial driving oil cylinders, wherein four groups of axial sliding frames are arranged in a cross shape, the axial sliding frames are opposite to each other, the side walls of two adjacent groups of axial sliding frames are respectively and fixedly connected together through the sliding frame connecting pieces, and each group of axial sliding frames are positioned between two corresponding adjacent upright posts; the four groups of sliding frame connecting pieces are respectively positioned in the concave parts of the vertical guide rail mounting sections of the corresponding upright posts, and each group of sliding frame connecting pieces are in sliding fit with the axial guide rail on the corresponding upright posts; each group of the sliding frame connecting pieces are respectively connected with the upper top cover through a group of axial driving oil cylinders, and the four groups of axial driving oil cylinders drive the axial sliding frame to integrally and axially lift; each group of axial sliding frames are internally provided with a group of radial sliding frames in a sliding manner along the radial direction, the front ends of the radial sliding frames are respectively provided with a rotary wheel assembly, and a radial driving oil cylinder is arranged between each group of axial sliding frames and the corresponding radial sliding frame.
Further, the upper top cover comprises two U-shaped top cover members, the butt joint parts of the two top cover members are oppositely connected through flange plates to form a rectangular frame, top cover positioning keys are arranged at the joint parts of the lower end surfaces of the top cover members and the top surfaces of the corresponding upright posts in at least two mutually perpendicular directions, and the side surfaces of the top cover members are connected with the corresponding upright posts through a plurality of top cover adjusting blocks.
Furthermore, the bed connecting section of the upright post is provided with two mutually perpendicular bed connecting surfaces, and the two bed connecting surfaces of each upright post are respectively and fixedly connected with two adjacent side walls on the main bed through a right-angle connecting piece; the lower parts of two adjacent upright posts are respectively connected through a reinforcing cross beam.
Furthermore, the main shaft is arranged on the main lathe body through a main shaft sleeve, the main shaft sleeve comprises an upper shaft sleeve and a lower shaft sleeve, the upper shaft sleeve and the lower shaft sleeve are fixedly connected together through bolts and are connected in the circumferential direction of the joint of the upper shaft sleeve and the lower shaft sleeve through a main shaft sleeve connecting key, and the main shaft is rotatably arranged in the main shaft sleeve from top to bottom through a main shaft radial bearing, a main shaft axial bearing and a main shaft centering bearing in sequence.
Furthermore, the axial driving oil cylinders are all in inverted structures, the upper end parts of the piston rods of the axial driving oil cylinders are connected with the upper top cover, the cylinder bodies of the axial driving oil cylinders are connected with the corresponding carriage connecting pieces, and the inlet and the outlet of the axial driving oil cylinders are all arranged at the upper ends of the piston rods; the four groups of the axial driving oil cylinders are controlled by adopting a synchronous lifting hydraulic control system, the synchronous lifting hydraulic control system comprises an axial oil cylinder electromagnetic valve and two hydraulic distributors, the axial oil cylinder electromagnetic valve and the hydraulic distributors are respectively arranged at the top of the upper top cover, the axial oil cylinder electromagnetic valve is respectively connected with the two hydraulic distributors through a first oil inlet and return pipeline, and the lengths of the two groups of first oil inlet and return pipelines connected with the hydraulic distributors are equal; each hydraulic distributor is connected with the corresponding two axial driving oil cylinders through a second oil inlet and return pipeline, the lengths of four groups of second oil inlet and return pipelines connected with the corresponding axial driving oil cylinders are equal, and the first oil inlet and return pipelines and the second oil inlet and return pipelines are hard oil pipes; an axial grating ruler arranged along the axial direction is further arranged between the sliding frame connecting piece and the corresponding upright post.
Furthermore, the axial sliding frame adopts an assembling structure and comprises an upper frame, a lower frame, side connecting frames and a rear connecting plate, wherein the left side, the right side and the rear side of the upper frame and the lower frame are respectively spliced together up and down through the side connecting frames and the rear connecting plate on the left side and the right side, a sliding cavity for installing the radial sliding frame is formed between the upper frame and the lower frame, a radial upper guide rail arranged on the upper frame is arranged at the upper part of the sliding cavity, and a radial lower guide rail arranged on the lower frame is arranged at the lower part of the sliding cavity; the upper side of the radial sliding frame is provided with a radial upper sliding block which is in sliding fit with the radial upper guide rail, and the lower side of the radial sliding frame is provided with a radial lower sliding block which is in sliding fit with the radial lower guide rail; the rotary wheel assembly is arranged on a front seat plate of the radial sliding frame, the rear end of the radial driving oil cylinder is connected with the rear connecting plate, and the front end of the radial driving oil cylinder is connected with the back surface of the front seat plate; the rear end of the radial driving oil cylinder is fixedly provided with an oil cylinder control valve block, the oil cylinder control valve block is a proportional servo valve, and a radial grating ruler arranged along the radial direction is further arranged between the axial sliding frame and the radial sliding frame.
Further, the left side and the right side of the upper frame are respectively provided with an upper frame side connecting part, and the left side and the right side of the lower frame are respectively provided with a lower frame side connecting part; the side connecting frame comprises an inner side connecting plate, an intermediate connecting plate and an outer side connecting plate, wherein the inner side connecting plate and the outer side connecting plate are fixedly connected together through a plurality of intermediate connecting plates, the inner side connecting plate is connected with an upper frame side connecting part and a lower frame side connecting part of the corresponding side through bolts and stress pin shafts, and the outer side connecting plate is connected with a sliding frame connecting piece of the corresponding side through bolts and stress pin shafts.
Still further, the spinning wheel assembly comprises a spinning wheel seat, a spinning wheel and a spinning wheel shaft, wherein the spinning wheel is fixedly arranged at the lower end of the spinning wheel shaft, a closed bearing chamber is arranged in the spinning wheel seat, the spinning wheel shaft is sequentially arranged in the bearing chamber of the spinning wheel seat from top to bottom through a spinning wheel shaft centering bearing, a spinning wheel shaft axial bearing and a spinning wheel shaft radial bearing, a cooling jacket is arranged on the side wall of the spinning wheel seat, a cooling liquid inlet, a cooling liquid outlet, a lubricating oil inlet and a lubricating oil outlet are further respectively arranged on the spinning wheel seat, the cooling liquid inlet is communicated with the cooling jacket through a liquid inlet channel, and the cooling liquid outlet is communicated with the cooling jacket through a liquid outlet channel to form a circulating cooling loop; the lubricating oil inlet is communicated with the bearing chamber through the oil inlet channel, and the lubricating oil outlet is communicated with the bearing chamber through the oil outlet channel to form a circulating cooling lubricating loop.
Furthermore, the lower parts of the four groups of axial sliding frames are respectively provided with a demoulding and unloading assembly, the demoulding and unloading assembly comprises a linear driver, a guide sliding block, a guide seat and a claw, the linear driver and the guide seat are respectively arranged at the bottoms of the corresponding axial sliding frames, the guide sliding blocks are arranged on the guide seats in a sliding manner, the claw is fixed at the front end of the guide sliding block, the rear end of the guide sliding block is in transmission connection with the driving end of the linear driver, and the linear driver drives the guide sliding block and the claw to move in a telescopic manner along the radial direction; the telescopic movement direction of the clamping jaw is consistent with the telescopic movement direction of the rotary wheel assembly.
Still further, the bottom of at least one group of axial sliding frames is also provided with a mould repairing mechanism, the mould repairing mechanism comprises a fixed seat, a sliding support, a cutter mounting seat, a repairing working part and a servo screw transmission mechanism, the fixed seat is fixedly arranged at the bottom of the axial sliding frames, the sliding support is linearly and slidingly arranged on the fixed seat, the servo screw transmission mechanism is arranged between the fixed seat and the sliding support and is used for driving the sliding support to move back and forth on the fixed seat, the cutter mounting seat is fixed on the front end surface of the sliding support, and the repairing working part is detachably arranged on the cutter mounting seat; the repairing working part is a turning tool assembly or a polishing assembly.
3. Advantageous effects
Compared with the prior art, the technical scheme provided by the invention has the following remarkable effects:
(1) According to the large-scale numerical control vertical four-spinning roller spinning machine, the upright column frame is provided with four upright columns which are in rectangular distribution, the spinning roller slide pillow assembly is provided with four groups of axial sliding racks which are arranged in a cross shape, the whole spinning roller slide pillow assembly which is in the cross shape is axially and slidably arranged on the rectangular four-upright column frame through reasonable structural layout design, the stability of the whole structure of the upright column frame is higher, the mounting bolts of the axial guide rail are not easily subjected to shearing force, the axial feeding and radial feeding control precision of the spinning roller is high, the spinning processing precision and the spinning working pressure of the large-scale numerical control vertical four-spinning roller spinning machine are improved, and the processing requirement of large-scale spinning pieces can be met;
(2) The upper top cover of the large-sized numerical control vertical type four-wheel spinning machine comprises two U-shaped top cover components, the butt joint parts of the two top cover components are oppositely connected through flange plates to form a rectangular frame, the structure is simple, the overall structural strength after connection is high, and the large-sized numerical control vertical type four-wheel spinning machine has the advantages of convenience in processing and manufacturing, convenience in transportation and assembly and the like; the connecting part of the lower end surface of the top cover component and the corresponding top surface of the upright post is provided with top cover positioning keys at least in two mutually perpendicular directions, the positioning keys can ensure the connection precision between the upright post and the upper top cover, and the positioning keys can bear shearing action, so that the integral structural strength of the upright post frame of the spinning machine is improved;
(3) The invention relates to a large-scale numerical control vertical type four-wheel spinning machine, wherein the lathe bed connecting section of a stand column is provided with two mutually vertical lathe bed connecting surfaces, the two lathe bed connecting surfaces of each stand column are respectively and fixedly connected with two adjacent side walls on a main lathe bed through a right-angle connecting piece, and the stand column is firmly and reliably connected with the main lathe bed; the lower parts of two adjacent upright posts are respectively connected through the reinforcing cross beam, so that the structural strength and the integrity of the upright post frame are improved, and the working pressure and the processing precision of the spinning machine are improved;
(4) The main shaft of the large numerical control vertical type four-wheel spinning machine is arranged on a main lathe bed through a main shaft sleeve, the main shaft sleeve comprises an upper shaft sleeve and a lower shaft sleeve, the upper shaft sleeve and the lower shaft sleeve are fixedly connected together through bolts and are connected in the circumferential direction of the joint of the upper shaft sleeve and the lower shaft sleeve through a main shaft sleeve connecting key, and the main shaft sleeve is convenient to install and detach by adopting a detachable structure of the upper shaft sleeve and the lower shaft sleeve; the main shaft is rotatably arranged in the main shaft sleeve from top to bottom through a main shaft radial bearing, a main shaft axial bearing and a main shaft centering bearing in sequence, so that the rotation precision and bearing capacity of the main shaft can be ensured, and the machining precision of the large vertical spinning machine is improved;
(5) According to the large numerical control vertical type four-spinning-wheel spinning machine, the axial driving oil cylinders are of inverted structures, and meanwhile, the synchronous lifting hydraulic control system is utilized to lift and control the large numerical control vertical type four-spinning-wheel spinning machine, so that hydraulic control paths of the four axial driving oil cylinders are equal, the working synchronism and consistency of the four axial driving oil cylinders are guaranteed, the control precision of the axial driving oil cylinders is improved, the lifting balance of an axial sliding frame of the large numerical control vertical type four-spinning-wheel spinning machine is better, and the spinning machining precision and stability are further improved;
(6) According to the large-scale numerical control vertical type four-wheel spinning machine, the axial sliding frame adopts the assembly structure, so that the guide rail installation surface and the accurate positioning installation guide rail can be processed on the upper frame and the lower frame, the installation convenience and the installation precision of the ram guide rail are ensured, and the radial sliding stability of the rotary wheel ram is improved; the upper frame and the lower frame are connected by adopting a connecting plate, the connecting position adopts a bolt and a stress pin shaft, and the stress pin shaft bears the up-down shearing action, so that the splicing position precision and the structural strength of the axial sliding frame are improved;
(7) The invention relates to a large-scale numerical control vertical four-spinning-wheel spinning machine, which comprises a spinning wheel seat, a spinning wheel and a spinning wheel shaft, wherein the spinning wheel shaft is arranged in a bearing chamber of the spinning wheel seat through a spinning wheel shaft centering bearing, a spinning wheel shaft axial bearing and a spinning wheel shaft radial bearing, so that the rotation precision and bearing capacity of the spinning wheel can be ensured, and the spinning processing precision is further ensured; the rotary wheel seat is respectively provided with a circulating cooling loop and a circulating cooling lubricating loop, so that the rotary wheel assembly can be cooled and lubricated in a circulating way, the working temperature of the rotary wheel is effectively reduced, the working stability and the service life of a bearing are improved, and the processing precision of the rotary press is improved;
(8) The invention relates to a large-scale numerical control vertical four-spinning-wheel spinning machine, the lower parts of four groups of axial sliding racks are respectively provided with a demoulding and unloading assembly, the demoulding and unloading assembly comprises a linear driver, a guide sliding block, a guide seat and a claw, the demoulding and unloading assembly is directly arranged at the bottom of the axial sliding rack of the spinning machine, the demoulding of a spinning workpiece is realized by using the axial sliding rack, the structural design is simple and compact, the manufacturing cost of the spinning machine is reduced, the control precision of the spinning-wheel sliding pillow assembly is high, the bearing capacity is strong, the demoulding and unloading assembly is driven by the axial sliding rack to eject the spinning workpiece from a mould, the demoulding of the workpiece is more stable and reliable, and the operation safety is high;
(9) According to the large-scale numerical control vertical four-spinning-wheel spinning machine, the bottom of at least one group of axial sliding frames is also provided with the die repairing mechanism, the die repairing mechanism is arranged on the ram frame of the spinning machine, and the servo screw transmission mechanism is used for driving the repairing working part to repair the spinning die in a turning, polishing and other modes, so that the spinning die is not required to be detached and repaired, the repairing operation flow of the spinning die is simplified, the repairing period is shortened, and the spinning processing efficiency is improved; in addition, the mould repairing mechanism of the spinning machine is simple and compact in structure, high in servo control precision and simple and convenient to operate.
Drawings
Fig. 1 is a schematic perspective view of a large-scale numerical control vertical four-spinning-wheel spinning machine;
FIG. 2 is a schematic axial sectional structure of a large-scale numerical control vertical type four-spinning-wheel spinning machine;
FIG. 3 is a schematic diagram of a radial sectional structure of a large-scale numerical control vertical four-wheel spinning machine according to the present invention;
FIG. 4 is a schematic view of the connection structure of the column frame and the bed assembly according to the present invention;
FIG. 5 is a schematic view of a split structure of the column frame and bed assembly of the present invention;
FIG. 6 is a schematic view of the split structure of the middle column and the upper top cover of the present invention;
FIG. 7 is a schematic view of a partial enlarged structure at K in FIG. 6;
FIG. 8 is a schematic perspective view of a single column of the present invention;
FIG. 9 is a schematic cross-sectional view of a single column of the present invention;
FIG. 10 is a schematic view of a partial enlarged structure at M in FIG. 9;
FIG. 11 is a schematic view of the cross-sectional structure in the direction A-A of FIG. 9;
FIG. 12 is a schematic perspective view of a bed assembly according to the present invention;
FIG. 13 is a schematic cross-sectional view of the assembled relationship of the spindle and spindle cover in accordance with the present invention;
FIG. 14 is a schematic view of the installation structure of the synchronous lifting hydraulic control system on the upright frame in the present invention;
FIG. 15 is a schematic diagram of the hydraulic principle of the synchronous lifting hydraulic control system of the present invention;
FIG. 16 is a schematic perspective view of a wheel ram assembly according to the present invention;
FIG. 17 is a schematic view of a split construction of a rotor ram assembly of the present invention;
FIG. 18 is a schematic structural view of the radial carriage and spin wheel assembly of the present invention in an assembled condition on an axial carriage;
FIG. 19 is a schematic view showing the disassembled state of the axial carriage, the radial carriage and the spin wheel assembly according to the present invention;
FIG. 20 is a schematic cross-sectional structural view of an assembled state of the radial carriage and spin wheel assembly on an axial carriage in accordance with the present invention;
FIG. 21 is a schematic view of a stripper discharge assembly of the present invention;
FIG. 22 is a schematic perspective view of a spinning wheel assembly according to the present invention;
FIG. 23 is a schematic cross-sectional view of the structure in the direction B-B in FIG. 22;
FIG. 24 is a schematic view of the cross-sectional structure in the direction D-D in FIG. 23;
FIG. 25 is a schematic cross-sectional view of the structure of FIG. 22 in the direction C-C;
FIG. 26 is a schematic view of the cross-sectional structure in the direction E-E in FIG. 25;
FIG. 27 is a schematic view of the structure of the mold repair mechanism of the present invention mounted on an axial carriage;
FIG. 28 is a schematic perspective view of a mold repair mechanism according to the present invention;
FIG. 29 is a schematic cross-sectional structural view of a mold repair mechanism in accordance with the present invention;
fig. 30 is a schematic diagram showing a disassembled structure of the mold repair mechanism in the present invention.
Reference numerals in the schematic drawings illustrate:
100. a rotary wheel slide pillow assembly; 11. an axial carriage; 111. an upper frame; 111a, radial upper guide rail; 111b, an upper frame side connection portion; 112. a lower frame; 112a, a radial lower guide rail; 112b, a lower frame side connection portion; 113. a side connection rack; 113a, an inner connection plate; 113b, intermediate connection plates; 113c, an outer connection plate; 114. a rear connecting plate; 12. a carriage connection; 121. an axial slider; 13. a spinning wheel assembly; 131. a spin wheel seat; 131-1, a heat dissipation jacket; 131-2, a cooling liquid inlet; 131-3, a cooling liquid outlet; 131-4, a lubricating oil inlet; 131-5, a lubricating oil outlet; 131-6, an oil inlet channel; 131-7, a liquid inlet channel; 131-8, a liquid outlet channel; 132. a spinning wheel; 133. a rotating shaft; 134. centering a bearing by a rotating wheel shaft; 135. the rotating wheel shaft axially carries a bearing; 136. a radial bearing of the rotating wheel shaft; 137. a bearing lock nut; 138. bearing spacer bush; 139. a middle limiting ring; 1310. an upper cover; 14. an axial driving oil cylinder; 141. an axial cylinder electromagnetic valve; 142. a hydraulic distributor; 143. a first oil inlet and return pipeline; 144. a second oil inlet and return pipeline; 15. a radial carriage; 151. a radial upper slider; 152. a radial lower slider; 153. a front seat plate; 16. a radial driving oil cylinder; 16a, an oil cylinder control valve block; 17. a demolding and discharging assembly; 171. a linear driver; 172. a mounting plate; 173. a guide slide block; 174. a guide seat; 175. a claw; 18. a mold repair mechanism; 181. a fixing seat; 181a, a guide rail bracket; 181b, horizontal guide rails; 181c, a screw support; 181d, bearing seats; 181e, travel limiting block; 182. a connecting seat board; 182a, horizontal sliders; 183. a sliding support; 184. a cutter mounting seat; 184a, mounting holes; 184b, connecting pins; 184c, cotter pin; 185. repairing the working part; 186. a motor reducer; 187. a servo motor; 188. a screw rod; 189. a lead screw nut;
200. A pillar frame; 21. a column; 211. an axial guide rail; 211a, a guide rail wedging block; 212. a horizontal top plate; 212a, upright post key slot; 213. a lathe bed connecting plate; 214. a vertical guide rail mounting section; 215. a vertical guide rail mounting surface; 216. a bed connecting section; 217. a transition surface; 218. a horizontal reinforcing plate; 219. a guide rail mounting seat; 219a, wedge grooves; 210. a vertical reinforcing plate; 22. an upper top cover; 221. a top cover member; 221a, top cover key slot; 221b, adjusting the block connecting hole; 222. a flange plate; 223. a top cover adjusting block; 224. a top cover positioning key; 23. a right angle connector; 24. a reinforcing beam; 25. an axial grating ruler;
300. a lathe bed assembly; 31. a main lathe bed; 311. a shaft sleeve mounting seat; 312. a main shaft lathe bed connecting key; 32. a main shaft; 33. a spindle sleeve; 331. an upper shaft sleeve; 332. a lower shaft sleeve; 34. a main shaft bearing group; 341. a radial bearing of the main shaft; 342. a main shaft axial bearing; 343. a main shaft centering bearing; 344. a gland is arranged on the bearing; 345. a lower limit ring of the bearing; 346. an intermediate spacer; 347. a lower lock nut; 35. a speed reducer; 36. a universal drive shaft; 37. an upper end cap; 38. and a main shaft sleeve connecting key.
Detailed Description
For a further understanding of the present invention, the present invention will be described in detail with reference to the drawings and examples.
Referring to fig. 1 to 3, a large-scale numerically controlled vertical four-wheel spinning machine according to the present embodiment includes a wheel slide pillow assembly 100, a column frame 200, and a bed assembly 300, wherein the bed assembly 300 is disposed at the lower portion of the column frame 200, and is used as a foundation of the whole vertical four-wheel spinning machine together with the column frame 200; the roller slide pillow assembly 100 is installed on the upright frame 200 and is used for carrying out spinning forming on a workpiece in cooperation with a spinning die on the lathe bed assembly 300. Wherein, the liquid crystal display device comprises a liquid crystal display device,
referring to fig. 4 to 11, the column frame 200 has four columns 21 in rectangular distribution, and the tops of the four columns 21 are fixedly connected by a rectangular upper top cover 22, so that the bearing capacity of the columns 21 can be improved. Each upright 21 comprises a lower bed connecting section 216 and a vertical guide rail mounting section 214 above the bed connecting section 216, the bed connecting section 216 is used for being connected with the bed assembly 300, and the vertical guide rail mounting section 214 is used for mounting a guide rail for axially lifting and lowering the rotary wheel slide pillow assembly 100. The vertical guide rail mounting section 214 has an inner recess, two vertical guide rail mounting surfaces 215 perpendicular to each other are formed in the inner recess, the inner recess of each upright post 21 faces the inner side of the upright post frame 200, and adjacent vertical guide rail mounting surfaces 215 in two adjacent upright posts 21 are parallel; the vertical rail mounting surfaces 215 are fixedly mounted on the axial rail 211. The axial guide rails 211 are respectively fixed on the two vertical guide rail installation surfaces 215 of the concave part, so that the pressure generated by the rotary wheel slide pillow assembly 100 on the upright post 21 is perpendicular to the corresponding axial guide rail 211, and the problem that the installation bolts of the axial guide rails 211 are easily broken due to shearing force is effectively solved.
Referring to fig. 4 and 5, the bed assembly 300 is disposed at the lower portion of the column frame 200, and includes a main bed 31 and a main shaft 32 disposed at the center of the main bed 31, wherein the main bed 31 is fixedly connected with bed connecting sections 216 of four columns 21, respectively, so that the main bed 31 and the column frame 200 form a whole, thereby improving the integrity and structural strength of the vertical four-wheel spinning machine. The main shaft 32 can be controlled to rotate, the upper end surface of the main shaft 32 is used for installing a spinning die, and the main shaft 32 drives the spinning die to rotate.
Referring to fig. 16 and 17, the rotary wheel slide pillow assembly 100 includes an axial slide frame 11, a slide frame connecting piece 12, a rotary wheel assembly 13, an axial driving oil cylinder 14, a radial slide frame 15 and a radial driving oil cylinder 16, the axial slide frame 11 is provided with four groups in a cross shape, and the axial slide frames 11 are opposite to each other in pairs, that is, the four groups of axial slide frames 11 are circumferentially distributed around the axis of the spindle, and the straight lines where the two opposite axial slide frames 11 are located are perpendicular to each other to form a cross shape. The side walls of two adjacent groups of axial sliding frames 11 are respectively and fixedly connected together through sliding frame connecting pieces 12, and each group of axial sliding frames 11 is positioned between two corresponding adjacent upright posts 21 (shown in figure 1); the four groups of carriage connectors 12 are respectively positioned in the concave parts of the vertical guide rail mounting sections 214 of the corresponding upright posts 21, each group of carriage connectors 12 is in sliding fit with the corresponding axial guide rail 211 on the upright post 21, when the workpiece is extruded by the rotary wheel assembly 13, the generated reverse acting force is supported by the axial guide rail 211 in the vertical direction, and the mounting bolts of the axial guide rail 211 are not acted by shearing force, so that the problem of bolt breakage is effectively solved. Each group of carriage connecting pieces 12 is connected with the upper top cover 22 through a group of axial driving oil cylinders 14, and the four groups of axial driving oil cylinders 14 drive the axial carriage 11 to axially move up and down integrally, so that the axial feeding control of the spinning wheel is realized. A group of radial sliding carriages 15 is arranged in each group of axial sliding carriages 11 in a sliding way along the radial direction, and the sliding directions of the radial sliding carriages 15 in the two opposite axial sliding carriages 11 are opposite. The front ends of the radial sliding frames 15 are respectively provided with a rotary wheel assembly 13, and radial driving oil cylinders 16 are respectively arranged between each group of axial sliding frames 11 and the corresponding radial sliding frame 15, and the radial driving oil cylinders 16 are used for driving the rotary wheel assemblies 13 to move in a radial feeding mode. The four spinning roller assemblies 13 are uniformly distributed around the spinning machine main shaft, the axial feeding and the radial feeding of the spinning roller assemblies 13 are more stable, the four spinning roller assemblies 13 synchronously spin the workpiece, and the spinning operation is more stable. Therefore, through the reasonable design of the structural layout, the whole cross-shaped roller pillow assembly 100 is axially and slidably arranged on the rectangular four-column frame, the stability of the whole structure of the column frame 200 is stronger, the mounting bolts of the axial guide rail 211 are not easily subjected to shearing force, the axial feeding of the roller pillow assembly 100 on the column frame 200 and the radial feeding control precision of the roller are high, the spinning processing precision and the spinning working pressure of the large numerical control vertical four-roller spinning machine are improved, the processing requirement of large spinning pieces can be met, and the problems of poor structural stability, low processing precision, small spinning pressure and the like of the existing vertical four-roller spinning machine are solved.
The large-scale numerical control vertical type four-wheel spinning machine of the embodiment has the advantages that the occupied size is close to (5-7 m) × (5-7 m), the working pressure can reach 150 tons, the maximum processing diameter can reach 4m, the size and the weight are very large, the structural form of the traditional spinning machine is difficult to meet the design requirement, and the difficulty in processing, transporting and assembling of large-scale components is very large. The embodiment optimizes the specific structure of the vertical four-wheel spinning machine aiming at the problems, and is specifically characterized in that:
in the pillar frame 200, the upper top cover 22 is formed in a two-half split assembly structure. As shown in fig. 5 to 7, the upper top cover 22 includes two "u" -shaped top cover members 221, the end portions of the two top cover members 221 each have a butt joint portion, and flange plates 222 are provided at the butt joint portions, and the butt joint portions of the two top cover members 221 are oppositely flange-connected by the flange plates 222 to form a rectangular frame. The flange plates 222 may be welded to the top cover members 221, and when the top cover member 221 is mounted, the corresponding flange plates 222 of the two top cover members 221 are abutted, and then fastened and connected by bolts. By adopting the structure, the structure is simple, the overall structural strength after connection is high, the structure has the advantages of convenience in processing and manufacturing, convenience in transportation and assembly and the like, and the structure of the top cover is adopted to be connected with the upright post 21, so that the overall strength of the upright post of the spinning machine can be improved, and the processing precision of the spinning machine is improved. Further, the connection part between the lower end surface of the top cover member 221 and the top surface of the corresponding upright post 21 is provided with top cover positioning keys 224 at least in two mutually perpendicular directions, and the side surface of the top cover member 221 is connected with the corresponding upright post 21 through a plurality of top cover adjusting blocks 223. The positioning key can be utilized to ensure the connection precision between the upright post 21 and the upper top cover 22, and the positioning key can be utilized to bear the shearing action, so that the overall structural strength of the upright post frame of the spinning machine is improved. As shown in fig. 7, a top cover key groove 221a is provided on the lower end surface of the top cover member 221, a column key groove 212a is provided at a position corresponding to the horizontal top plate 212 on the top surface of the column 21, and a top cover positioning key 224 is provided between the top cover key groove 221a and the column key groove 212 a. The upper portion of top cap adjusting block 223 passes through bolted connection on the adjusting block connecting hole 221b of top cap component 221 lower part side, and bolted connection is passed through on the top lateral wall of stand 21 to the lower part of top cap adjusting block 223, can realize the firm connection of upper top cap 22 and stand 21, can play the adjustment alignment effect simultaneously, helps improving assembly precision.
In addition, the bed connecting section 216 of the upright 21 has two mutually perpendicular bed connecting surfaces, and the two bed connecting surfaces of each upright 21 are respectively and fixedly connected with two adjacent side walls on the main bed 31 through a right-angle connecting piece 23, so that the upright 21 and the main bed 31 are firmly and reliably connected. The right-angle connecting piece 23 comprises two connecting plates which are L-shaped, and a plurality of right-angle plates are welded and fixed between the two connecting plates. Specifically, the bed connecting plates 213 are respectively disposed on the bed connecting surfaces of the bed connecting sections 216, and the right-angle connecting pieces 23 are connected with the bed connecting plates 213 and the side walls of the main bed 31 by bolts. The lower parts of two adjacent upright posts 21 are respectively connected through reinforcing beams 24, the reinforcing beams 24 are preferably made of I-steel, the end parts of each reinforcing beam 24 are fixedly provided with flange end plates, and the flange end plates of the reinforcing beams 24 are fixedly connected with the side walls of the corresponding upright posts 21 through bolts. The structural strength and stability of the stud frame is further enhanced by the reinforcing cross members 24. The bottoms of the four upright posts 21 are connected through the reinforcing cross beam 24, so that the integrity of the upright post frame is further improved, and the upright posts 21 can be effectively prevented from deforming. With further reference to fig. 8 and 9, the cross-sectional shape of the vertical rail mounting section 214 of the upright 21 is generally "". Because the vertical rail mounting section 214 receives two mutually perpendicular acting forces simultaneously, the two acting forces can form an effect of tearing to the outer side on the upright column 21, in order to strengthen the tearing resistance of the upright column 21, the two vertical rail mounting surfaces 215 are connected by adopting a transition surface 217 at the intersection, the transition surface 217 can be an oblique inner chamfer surface or an arc inner chamfer surface, and the transition surface 217 can prevent the stress concentration phenomenon of the two vertical rail mounting surfaces 215 at the intersection, thereby improving the tearing resistance of the upright column. The upright 21 is hollow, and a plurality of horizontal reinforcing plates 218 are arranged in the upright 21 at intervals along the height direction. The upright post 2 can be formed by welding plates, and the horizontal reinforcing plate 218 is welded and fixed in the upright post 21 at intervals. In order to facilitate the installation of the axial guide rail 211, guide rail installation seats 219 are fixedly arranged on the two vertical guide rail installation surfaces 215, and the guide rail installation seats 219 can play a structural reinforcement role on the guide rail installation surfaces and can improve the installation accuracy of the guide rail. In addition, the vertical reinforcement plate 210 (as shown in fig. 9) is further provided in the column 21 at the back of the rail mounting seat 219, so that the structural strength of the rail mounting portion can be further enhanced, and the working pressure and the working accuracy of the spinning machine can be improved. Referring to fig. 10, the axial guide rail 211 is mounted on the guide rail mounting seat 219 by bolts, in order to facilitate accurate positioning of the axial guide rail 211, a guide rail groove and a wedge groove 219a located at one side of the guide rail groove are provided on the guide rail mounting seat 219, one side of the wedge groove 219a is communicated with the guide rail groove, the axial guide rail 211 is mounted in the guide rail groove, a plurality of guide rail wedging blocks 211a are provided in the wedge groove 219a along the length direction of the axial guide rail 211, and the guide rail wedging blocks 211a are mounted in the wedge groove 219a by screws and play a role in positioning and abutting against the lateral direction of the axial guide rail 211, thereby ensuring mounting accuracy and mounting stability of the axial guide rail 211. In this embodiment, the rail wedging block 211a has a block or strip structure.
In the bed assembly 300, a spindle 32 is mounted on a main bed 31 through a spindle sleeve 33, and a spindle bearing set 34 is provided between the spindle 32 and the spindle sleeve 33. A spindle sleeve mounting seat 311 is arranged in the middle of the upper end surface of the main lathe bed 31, a spindle sleeve 33 is fixed in the spindle sleeve mounting seat 311, and the spindle sleeve are positioned through a spindle lathe bed connecting key 312. As shown in fig. 12 and 13, in order to facilitate the disassembly and assembly of the bearing of the spindle 32, the spindle sleeve 33 in this embodiment adopts a split structure, and the spindle sleeve 33 includes an upper sleeve 331 and a lower sleeve 332, where the upper sleeve 331 and the lower sleeve 332 are fixedly connected together by bolts, and are connected in the circumferential direction of the joint of the upper sleeve 331 and the lower sleeve 332 by a spindle sleeve connecting key 38. Specifically, the upper shaft sleeve 331 and the lower shaft sleeve 332 may be uniformly connected in the circumferential direction by using vertical bolts, and key grooves are machined at corresponding positions of the upper shaft sleeve 331 and the lower shaft sleeve 332, and the spindle sleeve connecting key 38 is fixed in the key grooves by using bolts, so that accurate positioning of the upper shaft sleeve and the lower shaft sleeve is achieved. By adopting the shaft sleeve connecting structure, the connecting and positioning precision is high, the coaxiality of the upper shaft sleeve and the lower shaft sleeve is effectively ensured, and the assembly precision of the main shaft is improved. The spindle 32 is installed in the spindle sleeve 33 from top to bottom sequentially through a spindle radial bearing 341, a spindle axial bearing 342 and a spindle centering bearing 343, and the spindle bearing set 34 can ensure the rotation precision and bearing capacity of the spindle 32 and improve the machining precision of the large vertical spinning machine. As a preferable solution, the spindle radial bearing 341 is a four-row cylindrical roller bearing, the spindle axial bearing 342 is a thrust self-aligning roller bearing, and the spindle centering bearing 343 is a tapered roller bearing. The four-row cylindrical roller bearing can ensure the parallelism of the main shaft 32 in the main shaft sleeve 33, improve the radial bearing capacity of the main shaft 32 and ensure the rotation speed of the main shaft 32; the thrust self-aligning roller bearing can improve the axial bearing capacity of the main shaft 32; the tapered roller bearing can ensure coaxiality of the main shaft 32 in the main shaft sleeve 33. By adopting the bearing combination design, the bearing combination type vertical spinning machine meets the performance requirements of bearing capacity, centering precision, rotating speed and the like of a large-scale vertical spinning machine, and has the advantages of high rotating precision, strong loading capacity and the like. Further, in terms of size selection of specific bearings, the outer diameter of the spindle radial bearing 341 is larger than that of the spindle axial bearing 342, and the outer diameter of the spindle axial bearing 342 is larger than that of the spindle centering bearing 343, so that the spindle 32 can work at a higher rotation speed by adopting the small-sized spindle centering bearing 343, and meanwhile, the installation and the disassembly of each bearing in the spindle sleeve 33 can be facilitated. Referring to fig. 13, in order to facilitate the installation of each bearing, in this embodiment, the upper end of the outer ring of the radial bearing 341 of the spindle is limited by the upper bearing gland 344 fixed on the upper portion of the upper shaft sleeve 331, the upper bearing gland 344 has a circular ring structure, and may be fixed on the upper portion of the upper shaft sleeve 331 by bolts, and the lower end of the outer ring of the radial bearing 341 of the spindle is limited by a ring table in the inner hole of the upper shaft sleeve 331; the upper end of the bearing inner ring of the main shaft radial bearing 341 is limited by a shoulder on the main shaft 32, the lower end of the bearing inner ring is limited by a bearing lower limiting ring 345 which is connected with the main shaft 32 through threads, the bearing lower limiting ring 345 is of a ring nut structure and is provided with internal threads, external threads are arranged at the corresponding positions of the main shaft 32, and the inner ring of the main shaft radial bearing 341 can be fixed on the main shaft 32 through screwing the bearing lower limiting ring 345 on the main shaft 32, so that the assembly is convenient and the assembly is reliable. In order to prevent foreign matters from entering the gap between the shaft sleeve and the main shaft 32, an upper end cover 37 sleeved on the outer side of the main shaft 32 is further arranged at the top of the upper shaft sleeve 331, and the upper end cover 37 can cover the gap between the bearing upper gland 344 and the shaft hole. The spindle axial bearing 342 is located below the spindle radial bearing 341, the upper end of the spindle axial bearing 342 is limited by the middle spacer 346 sleeved on the spindle 32, and the lower end of the spindle axial bearing 342 is limited by the upper end face of the lower shaft sleeve 332. The upper end of the middle spacer 346 abuts against a shoulder on which the bearing lower limit ring 345 is mounted, wherein the outer diameter of the spacer 346 is larger than the inner diameter of the bearing lower limit ring 345, so that the bearing lower limit ring 345 can be limited by the middle spacer 346, and the bearing lower limit ring 345 is prevented from loosening. The spindle centering bearing 343 is installed in the lower sleeve 332, and a lower lock nut 347 positioned at the lower end of the spindle centering bearing 343 is provided at the lower end of the spindle 32, so that the spindle centering bearing 343 can be prevented from loosening. With the above assembly structure, the assembly and disassembly of the spindle axial bearing 342 and the spindle centering bearing 343 are simpler and more convenient. In order to facilitate spindle transmission, a connecting sleeve is fixedly arranged at the lower end of the lower shaft sleeve 332, a speed reducer 35 connected with the lower end of the spindle 32 is fixedly arranged at the lower end of the connecting sleeve, an input shaft of the speed reducer 35 is perpendicular to the output shaft, and the input shaft of the speed reducer 35 is in transmission connection with a power device through a universal transmission shaft 36.
In the rotary wheel slide pillow assembly 100, the axial driving oil cylinders 14 all adopt inverted structures, specifically, the upper end parts of piston rods of the axial driving oil cylinders 14 are connected with the upper top cover 22, the cylinder bodies of the axial driving oil cylinders 14 are connected with the corresponding carriage connecting pieces 12, and the inlet and outlet of the axial driving oil cylinders 14 are arranged at the upper ends of the piston rods. During concrete manufacturing, two oil ducts are respectively processed on the piston rod, one oil duct penetrates through the piston rod from top to bottom and is communicated with a rodless cavity of the oil cylinder, and the other oil duct radially penetrates through the upper part of the piston and is communicated with a rod cavity of the oil cylinder. The structure of the axial driving oil cylinder 14 in the inverted design is more compact, the connection of an oil inlet and return pipe and the oil cylinder is facilitated, the bending of an oil pipe can be reduced, the lifting control synchronism of four groups of axial driving oil cylinders 14 is improved, and the axial feeding control stability and control precision of the whole rotary wheel slide pillow assembly are improved. As shown in fig. 14 and 15, four groups of axial driving cylinders 14 are controlled by a synchronous lifting hydraulic control system, the synchronous lifting hydraulic control system comprises an axial cylinder electromagnetic valve 141 and two hydraulic distributors 142, the axial cylinder electromagnetic valve 141 and the hydraulic distributors 142 are respectively arranged at the top of the upper top cover 22, the axial cylinder electromagnetic valve 141 is respectively connected with the two hydraulic distributors 142 through first oil inlet and return pipelines 143, and the lengths of the two groups of first oil inlet and return pipelines 143 connected with the hydraulic distributors 142 are equal, so that the distribution of the axial cylinder electromagnetic valve 141 to the two hydraulic distributors 142 is realized, and the oil pressures of the two hydraulic distributors 142 are ensured to be equal. Each hydraulic distributor 142 is connected with the corresponding two axial driving cylinders 14 through a second oil inlet and return pipeline 144, and the lengths of four groups of second oil inlet and return pipelines 144 connected with the corresponding axial driving cylinders 14 are equal, and the first oil inlet and return pipeline 143 and the second oil inlet and return pipeline 144 are hard oil pipes. By adopting the design of the synchronous lifting hydraulic control system, the hydraulic control paths of the four axial driving oil cylinders 14 can be equal, the working synchronism and consistency of the four axial driving oil cylinders 14 are ensured, the control precision of the axial lifting oil cylinders is improved, the lifting balance of the axial sliding frame of the large-scale numerical control vertical four-spinning roller spinning machine is better, and the spinning machining precision and stability are further improved. An axial grating ruler 25 which is arranged along the axial direction is further arranged between the carriage connecting piece 12 and the corresponding upright post 21, the oil cylinder electromagnetic valve 141 adopts a proportional servo valve, and the pressure, displacement and speed of the axial driving oil cylinder 14 can be controlled through the cooperation of the axial grating ruler 25 and the proportional servo valve.
In addition, as shown in fig. 16 and 17, in order to facilitate the connection of the carriage link 12 to the axial carriage 11, the cross-sectional shape of the carriage link 12 is preferably an "L" shape, and the carriage link 12 has two adjacent and perpendicular connection portions, the connection portions on both sides being capable of connecting the adjacent axial carriages 11, respectively. In addition, the external corner side walls of the carriage connecting pieces 12 near the outer sides are respectively provided with an axial sliding block 121 which is used for being in axial sliding fit with the upright column frame 200, the axial sliding blocks 121 are matched with the axial guide rails 211 on the corresponding upright columns 21, each carriage connecting piece 12 is in sliding fit with two groups of axial sliding blocks 121 in two directions, the axial sliding is stable, the bearing performance of radial spinning pressure is good, and the axial sliding blocks 121 are convenient to reasonably arrange. After connection, each axial sliding frame 11 can be supported by two groups of axial sliding blocks 121 which are perpendicular to the radial stress, so that the connecting bolts of the axial sliding blocks 121 can be prevented from being broken due to shearing force, and the working stability of the spinning machine can be improved. Referring to fig. 18 to 20, the axial carriage 11 adopts an assembly structure, and includes an upper frame 111, a lower frame 112, side connecting frames 113 and a rear connecting plate 114, wherein the left and right sides and the rear side of the upper frame 111 and the lower frame 112 are respectively spliced together up and down through the side connecting frames 113 and the rear connecting plate 114 on the left and right sides, that is, the left and right sides of the upper frame 111 and the lower frame 112 are respectively spliced up and down through one side connecting frame 113, the rear side of the upper frame 111 and the lower frame 112 are spliced up and down through one rear connecting plate 114, and a sliding cavity for mounting the radial carriage 15 is formed between the upper frame 111 and the lower frame 112. The sliding chamber is open at the front end, the upper part of the sliding chamber is provided with a radial upper guide rail 111a arranged on the upper frame 111, the lower part of the sliding chamber is provided with a radial lower guide rail 112a arranged on the lower frame 112, and the radial upper guide rail 111a and the radial lower guide rail 112a are mutually parallel and are used for installing a radial sliding frame 15 in the sliding chamber. The radial carriage 15 has a radial upper slider 151 slidably engaged with the radial upper rail 111a, and the radial carriage 15 has a radial lower slider 152 slidably engaged with the radial lower rail 112 a. The radial sliding frame 15 is in sliding fit with the axial sliding frame 11 through an upper guide rail sliding block structure and a lower guide rail sliding block structure, so that the radial guiding precision is high and the stability is good. By adopting the design of the axial sliding frame 11, the guide rail mounting surface and the accurate positioning mounting guide rail can be processed on the upper frame and the lower frame, so that the mounting convenience and the mounting precision of the radial sliding frame of the rotary wheel are ensured, and the radial sliding stability of the radial sliding frame of the rotary wheel is improved. The spin wheel assembly 13 is mounted on the front seat plate 153 of the radial carriage 15, the rear end of the radial carriage 15 is open, the rear end of the radial driving oil cylinder 16 is connected with the rear connecting plate 114, and the front end of the radial driving oil cylinder 16 is connected with the back of the front seat plate 153, so that the radial driving oil cylinder 16 can directly act on the front seat plate 153, the radial acting force on the spin wheel assembly 13 is more direct, the bearing strength requirement on the radial carriage of the spin wheel can be reduced, and meanwhile, the moving stroke of the radial driving oil cylinder 16 can be ensured under a more compact structure. The rear end of the radial driving oil cylinder 16 is fixedly provided with an oil cylinder control valve block 16a, the oil cylinder control valve block 16a is a proportional servo valve, and a radial grating ruler arranged along the radial direction is arranged between the axial sliding frame 11 and the radial sliding frame 15. The proportional servo valve and the radial grating ruler are matched to control the pressure, speed and displacement of the radial driving oil cylinder 16, so that the radial feeding control of the spinning wheel is facilitated; the cylinder control valve block 16a is directly arranged on the radial driving cylinder 16 without pipeline connection, so that hydraulic transmission loss caused by pipeline shrinkage does not exist, and the control precision of the radial driving cylinder is improved.
As shown in fig. 18 and 19, upper frame side connecting portions 111b are provided on the left and right sides of the upper frame 111, and lower frame side connecting portions 112b are provided on the left and right sides of the lower frame 112; the side connection frame 113 includes an inner connection plate 113a, an intermediate connection plate 113b, and an outer connection plate 113c, and the inner connection plate 113a and the outer connection plate 113c are fixedly connected together through a plurality of intermediate connection plates 113 b. The inner connecting plate 113a is connected to the upper frame side connecting portion 111b and the lower frame side connecting portion 112b of the corresponding side by bolts and force-receiving pins, and the outer connecting plate 113c is connected to the carriage connecting member 12 of the corresponding side by bolts and force-receiving pins. By adopting the structural design, the integral structural strength of the axial sliding frame is higher, the axial sliding frame is not easy to deform, and the sliding stability of the radial sliding frame 15 in the axial sliding frame 11 is improved; and the bolts and the stress pin shafts are adopted for connection, so that the connection precision is high. The rear connection plates 114 are also preferably connected to the rear portions of the corresponding upper and lower frames 111 and 112 using bolts and force-receiving pins. In addition, a front stopper for limiting the front end of the radial carriage 15 is provided at the front portion of the upper frame 111 and/or the lower frame 112, and a rear stopper for limiting the rear end of the radial carriage 15 is provided at the rear portion of the upper frame 111 and/or the lower frame 112, so that the front and rear positions of the radial carriage 15 can be limited. A travel switch is further provided between the radial carriage 15 and the axial carriage 11, and a main body portion of the travel switch may be fixed to one side of the lower frame 112, and travel switch shutters are provided respectively in front of and behind the corresponding side of the radial carriage 15. The radial movement stroke of the radial sliding frame 15 can be controlled by utilizing the front and rear limiting blocks and the travel switch, so that the radial movement control of the rotary wheel is facilitated.
Referring to fig. 22 to 26, in order to improve the working stability of the spinning wheel assembly 13, the spinning wheel assembly 13 in this embodiment includes a spinning wheel seat 131, a spinning wheel 132 and a spinning wheel shaft 133, the spinning wheel 132 is fixedly installed at the lower end of the spinning wheel shaft 133, a sealed bearing chamber is provided in the spinning wheel seat 131, the spinning wheel shaft 133 is installed in the bearing chamber of the spinning wheel seat 131 from top to bottom sequentially through a spinning wheel shaft centering bearing 134, a spinning wheel shaft axial bearing 135 and a spinning wheel shaft radial bearing 136, and three groups of bearings are utilized to support the spinning wheel shaft 133, so that the rotation precision and the bearing capacity of the spinning wheel can be ensured, the spinning processing precision is further ensured, and especially, the performance requirements of the bearing capacity, centering precision, processing speed and the like of a large spinning machine can be satisfied. As a preferable solution, the above-mentioned centring bearing 134 for the rotating shaft is a tapered roller bearing, the axial bearing 135 for the rotating shaft is a thrust centring roller bearing, and the radial bearing 136 for the rotating shaft is a cylindrical roller bearing. The tapered roller bearing can ensure the coaxiality of the spin wheel shaft 133 in the spin wheel seat 1; the thrust self-aligning roller bearing can improve the axial bearing capacity of the rotary wheel; the cylindrical roller bearing can adopt a double-row cylindrical roller bearing, so that the parallelism of the rotary wheel shaft 133 in the rotary wheel seat 131 can be ensured, the radial bearing capacity of the rotary wheel 132 can be improved, and the rotation speed of the rotary wheel 132 can be ensured. Further, the outer diameter of the bearing of the rotor shaft radial bearing 136 is larger than the outer diameter of the bearing of the rotor shaft axial bearing 135, and the outer diameter of the bearing of the rotor shaft axial bearing 135 is larger than the outer diameter of the bearing of the rotor shaft centering bearing 134. By adopting the bearing size, the rotating speed of the rotating shaft 133 can be ensured, and meanwhile, the installation and the disassembly of each bearing in the rotating wheel seat 131 are convenient. Specifically in this embodiment, the upper end of the rotating shaft 133 is provided with a bearing lock nut 137 for locking the rotating shaft centering bearing 134, the upper end surface of the bearing inner ring of the rotating shaft centering bearing 134 is pressed on the rotating shaft 133 by the bearing lock nut 137, and the lower end surface of the bearing outer ring of the rotating shaft centering bearing 134 is limited by the upper end surface of the annular table in the inner hole of the rotating wheel seat 131. The inner ring of the radial bearing 136 of the rotating wheel shaft is limited on the rotating wheel shaft 133 through an intermediate limiting ring 139 arranged on the rotating wheel shaft 133, the intermediate limiting ring 139 is provided with an internal thread, the corresponding position of the rotating wheel shaft 133 is provided with an external thread, and the inner ring of the radial bearing 136 of the rotating wheel shaft is pressed on the rotating wheel shaft 133 through the intermediate limiting ring 139. The upper end surface of the bearing inner ring of the radial bearing 136 of the rotating wheel shaft is limited by the step of the inner hole of the rotating wheel seat 131, and the lower end surface is limited by a lower end cover arranged at the lower part of the rotating wheel seat 131. The upper end of the rotary wheel shaft axial bearing 135 is limited by a ring table in the inner hole of the rotary wheel seat 131, and the lower end of the rotary wheel shaft axial bearing 135 is limited by a bearing spacer 138 sleeved on the rotary wheel shaft 133. An upper cover 1310 for closing the upper port of the inner hole of the spinning wheel shaft 133 is arranged on the upper part of the spinning wheel seat 131, so that the tightness of the bearing chamber of the spinning wheel seat 131 is ensured, and the leakage of the lubricating medium can be effectively prevented.
In the working process of the spinning wheel, the spinning wheel assembly 13 can receive radial and axial acting forces, and meanwhile, the high temperature and extrusion friction effects of a processed workpiece can be received, so that the bearing of the spinning wheel assembly 13 is complex in stress and severe in working environment, and the working stability and the service life of the bearing are affected. In order to improve the working stability of the spinning wheel assembly 13 and the service life of a bearing, a heat dissipation jacket 131-1 is arranged on the side wall of the spinning wheel seat 131, a cooling liquid inlet 131-2, a cooling liquid outlet 131-3, a lubricating oil inlet 131-4 and a lubricating oil outlet 131-5 are respectively arranged on the spinning wheel seat 131, the cooling liquid inlet 131-2 is communicated with the heat dissipation jacket 131-1 through a liquid inlet channel 131-7, the cooling liquid outlet 131-3 is communicated with the heat dissipation jacket 131-1 through a liquid outlet channel 131-8 to form a circulating cooling loop, cooling liquid is input from the cooling liquid inlet 131-2, the cooling liquid is discharged from the cooling liquid outlet 131-3 after heat exchange and heat absorption in the heat dissipation jacket 131-1, the cooling liquid circularly flows, and the temperature of the spinning wheel seat 131 is effectively reduced. The lubricating oil inlet 131-4 is communicated with the bearing chamber through the oil inlet channel 131-6, the lubricating oil outlet 131-5 is communicated with the bearing chamber through the oil outlet channel to form a circulating cooling lubricating loop, a lubricating medium is input from the lubricating oil inlet 131-4, flows in the bearing chamber and circularly flows out from the lubricating oil outlet 131-5, the bearing can be lubricated, and the lubricating medium can also carry out heat of the bearing, so that the working temperature of the bearing is effectively reduced.
Specifically, the cooling jackets 131-1 are respectively provided with one cooling liquid inlet 131-2 at the left and right sides of the spin base 131, which are respectively communicated with the two cooling jackets 131-1 through liquid inlet channels 131-7, and the cooling liquid outlet 131-3 is respectively communicated with the two cooling jackets 1-1 through liquid outlet channels 131-8. The heat dissipation jacket 131-1 is formed by enclosing a side sealing plate sealed on a concave cavity of the outer side wall of the spin-wheel base 131. As shown in fig. 22 and 25, the cooling liquid is designed to flow into the spin wheel seat 131 from bottom to top, i.e. the cooling liquid inlet 131-2 is located at the lower part of the spin wheel seat 131, the cooling liquid outlet 131-3 is located at the upper part of the spin wheel seat 131, the liquid inlet channel 131-7 and the liquid outlet channel 131-8 can be formed by connecting drilling channels, redundant openings are plugged by sealing plugs, and the processing and the manufacturing are convenient. As shown in fig. 22 and 24, the lubrication medium is also designed to enter the spin wheel seat 131 from the bottom to the top, i.e. the lubrication oil inlet 131-4 is located at the lower part of the spin wheel seat 131, the lubrication oil outlet 131-5 is located at the upper part of the spin wheel seat 131, the oil inlet channel 131-6 and the oil outlet channel can also be formed by connecting drilling channels, and the redundant holes can be plugged by sealing plugs. Through the dual cooling effect of coolant liquid and lubricating oil, can guarantee the bearing job stabilization nature in the revolver assembly, improve bearing life.
In the spinning process of the workpiece, the spinning die on the spinning wheel assembly 13 and the main shaft 32 extrudes the blank to form a revolving body part. In order to facilitate demolding of the workpiece, as shown in fig. 2, 20 and 21, in this embodiment, the lower parts of the four groups of axial carriages 11 of the roller-skate assembly 100 are all provided with demolding and unloading assemblies 17, the demolding and unloading assemblies 17 are directly installed at the bottoms of the axial carriages 11 of the roller-skate assembly 100, demolding of the workpiece is realized by using the roller-skate assembly 100, and demolding of the workpiece is more stable and reliable and has high operation safety. Specifically, the demolding and unloading assembly 17 includes a linear driver 171, a guide slider 173, a guide seat 174 and a claw 175, wherein the linear driver 171 and the guide seat 174 are respectively mounted at the bottom of the corresponding axial carriage 11, the guide slider 173 is slidably disposed on the guide seat 174, the claw 175 is fixed at the front end of the guide slider 173, the rear end of the guide slider 173 is in transmission connection with the driving end of the linear driver 171, and the linear driver 171 drives the guide slider 173 and the claw 175 to move in a telescopic manner in the radial direction. In the workpiece demoulding process, the claw 175 is driven to move to the bottom of the workpiece by the lifting motion of the axial sliding frame 11 of the spinning machine, the claw 175 is driven to extend towards the direction of the workpiece by the linear driver 171, the claw 175 is positioned below the lower end face of the workpiece, then the axial sliding frame 11 of the spinning machine is lifted, the workpiece is lifted upwards by the claw 175, and then the workpiece is demoulded from the die. Further, the claw 175 is located below the spin wheel assembly 13, and the telescopic movement direction of the claw 175 is identical to the telescopic movement direction of the spin wheel assembly 13. Namely, the telescopic movement direction of the clamping jaw 175 is the radial direction of the workpiece, the clamping jaw 175 can be clamped at the lower end of the workpiece from the radial direction of the spinning workpiece, and the spinning pillow self-balancing distribution design of the spinning machine is utilized, so that the ejection demoulding acting force of each clamping jaw on the spinning workpiece is more balanced, and the workpiece is more easily separated from the die. The linear actuator 171 is preferably an oil cylinder, the cylinder tube of which is fixed to the bottom of the axial carriage 11 by a mounting plate 172, and the end of the piston rod of which is fixedly connected to a guide slider 173 by a connecting member.
In order to repair the spinning dies by the repeated spinning operation, the spinning dies on the main shaft 32 of the spinning machine are easily worn due to extrusion and friction, and as shown in fig. 27 to 30, in the spinning pillow assembly 100, the die repair mechanism 18 is further disposed at the bottom of at least one group of axial sliding frames 11, and the die repair mechanism 18 performs axial feeding movement along with the axial sliding frames 11. The mold repairing mechanism 18 comprises a fixed seat 181, a sliding bracket 183, a cutter mounting seat 184, a repairing working part 185 and a servo screw transmission mechanism, wherein the fixed seat 181 is fixedly arranged at the bottom of the axial sliding frame 11, the sliding bracket 183 is linearly and slidably arranged on the fixed seat 181, the servo screw transmission mechanism is arranged between the fixed seat 181 and the sliding bracket 183 and is used for driving the sliding bracket 183 to move back and forth on the fixed seat 181, the cutter mounting seat 184 is fixed on the front end surface of the sliding bracket 183, and the repairing working part 185 is detachably arranged on the cutter mounting seat 184. Like this, the fore-and-aft direction of movement of repair work portion 185 is mutually perpendicular with the axial direction of movement of axial balladeur train 11 for repair work portion 185 can be moved towards the spinning mould under servo lead screw drive mechanism's drive, and then realizes the repair feeding to the spinning mould, need not to dismantle the restoration with the spinning mould, has simplified the repair operation flow of spinning mould greatly, has shortened repair cycle.
Referring to fig. 28 to 30, the above-mentioned servo screw transmission mechanism includes a motor reducer 186, a servo motor 187, a screw 188 and a screw nut 189, a screw support 181c is provided at the front end of the fixed base 181, a bearing seat 181d is provided at the rear end of the fixed base 181, the front end of the screw 188 is rotatably supported at the front end of the fixed base 181 by the screw support 181c, the rear end of the screw 188 is supported on the bearing seat 181d provided at the rear end of the fixed base 181, specifically, a front bearing is provided in the screw support 181c, the front end of the screw 188 is rotatably provided in the screw support 181c by the front bearing, and two sets of bearings can be provided in the bearing seat 181d to improve the support stability of the screw 188. The rear end of the lead screw 188 passes through the bearing seat 181d and is in transmission connection with the servo motor 187 through the motor reducer 186, and specifically, the motor reducer 186 can be fixed at the rear end of the fixed seat 181, the rear end of the lead screw 188 is connected with the output end of the motor reducer 186, the servo motor 187 is fixed at the rear end of the motor reducer 186, and the output shaft of the servo motor 187 is connected with the input end of the motor reducer 186. The motor reducer 186 and the servo motor 187 may be combined, i.e., an integrated servo reducer motor. The screw nut 189 is provided on the screw 188, the screw nut 189 is fixedly mounted on the connection seat plate 182, and the lower end of the connection seat plate 182 is fixedly connected with the rear end of the sliding bracket 183. In the working process, the servo motor 187 drives the screw rod 188 to rotate after being decelerated by the motor decelerator 186, and the screw rod 188 rotates to drive the screw rod nut 189 to axially move, so as to drive the sliding bracket 183 to move forwards and backwards. The servo motor is adopted for control, the repairing and feeding precision is high, the axial feeding system of the spinning machine is directly utilized for axial feeding, the repairing of the spinning die is more stable, and the repairing efficiency and precision are high.
As shown in fig. 28 and 30, in the present embodiment, rail brackets 181a are respectively provided at the lower portions of the left and right sides of the fixed base 181, a horizontal rail 181b is fixedly mounted on the rail brackets 181a, and a sliding bracket 183 is slidably mounted under the fixed base 181 by a horizontal slider 182 a. The guide rail bracket 181a can be welded and fixed with the fixed seat 181, the left horizontal guide rail 182a and the right horizontal guide rail 182a are arranged in parallel, the sliding bracket 183 is suspended below the fixed seat 181 by adopting two side guiding, the structural stability is good, and the guiding precision is high. The connecting seat plate 182 includes a vertical plate and a horizontal plate, a reinforcing plate is further disposed between the vertical plate and the horizontal plate, a screw nut 189 is fixed on the vertical plate, and a horizontal slider 182a is fixed on the horizontal plate. By means of the independent design of the connecting seat plate 182, the sliding support 183 is assembled on the connecting seat plate 182, the machining precision requirement on the sliding support 183 can be reduced, and the screw nut 189 and the horizontal sliding block 182a are both installed on the connecting seat plate 182, so that machining and assembling precision of moving parts can be improved. In addition, the front end and the rear end of the lower side of the fixing seat 181 are respectively provided with a travel limiting block 181e in limit fit with the connecting seat plate 182, as shown in fig. 30, the travel limiting blocks 181e are respectively arranged on the front end and the rear end of the fixing seat 181, so that the vertical plate of the connecting seat plate 182 is positioned between the two travel limiting blocks 181e, further, the movement travel of the repairing working part 185 is limited, the limit and the reset of the movement travel of the repairing working part 185 can be realized, the feeding control of the repairing working part is facilitated, and the moving parts are prevented from being damaged due to collision when exceeding the movement travel.
The repair work portion 185 is a turning tool assembly or a polishing assembly. Shown in fig. 28-30 is a turning tool assembly that is removably mounted to a tool mount 184, and which may be comprised of a turning tool and a tool holder mounted to the tool mount 184. When the polishing assembly is in use, the turning tool assembly is simply removed from the tool mount 184 and replaced with the polishing assembly. The polishing assembly may be provided using an existing handled grinding wheel grinder or the like, which is mounted to a tool holder with which the polishing assembly is mounted to the tool mount 184. The repair work part 185 and the cutter mounting seat 184 are detachably connected, so that the repair work part 185 with different functions can be replaced, for example, the contour of a die can be turned by using a cutter assembly, and then the surface of the die is ground and polished by using a polishing assembly, thereby ensuring the repair precision of the die and improving the repair convenience. The surface of the die subjected to grinding and finishing is smooth, and the workpiece is easy to be demolded on the die. As shown in fig. 29, the tool mounting seat 184 has an open-front mounting hole 184a, the tail of the repair work portion 185 has a tool holder, the tool mounting seat 184 and the tool holder are both provided with connecting holes, and the tool holder at the tail of the repair work portion 185 is inserted into the mounting hole 184a of the tool mounting seat 184, so that the connecting holes of the tool mounting seat 184 and the tool holder are opposite, and the tool holder is fixedly connected with the tool mounting seat 184 through a connecting pin 184 b. By adopting the dismounting structure, the repairing work part 185 is flexible and convenient to dismount and replace, and firm and stable in connection. Further, one end of the connecting pin 184b is provided with a cap head, the other end of the connecting pin 184b is provided with a radial through hole, the connecting pin 184b sequentially passes through the connecting holes on the tool holder and the tool mounting seat 184, and a split pin 184c is arranged in the end through hole of the connecting pin 184b, so that the split pin 184c limits the axial movement of the connecting pin 184b, and the connection stability of the connecting pin 184b is ensured.
Further, in the present embodiment, the bottoms of at least two sets of axial carriages 11 are provided with mold repair mechanisms 18, wherein the repair work portions 185 of at least one set of mold repair mechanisms 18 are turning tool assemblies, and the repair work portions 185 of at least one set of mold repair mechanisms 18 are polishing assemblies. Like this, have lathe tool subassembly and polishing subassembly simultaneously on roller pillow assembly 100, can repair the spinning mould as required, need not to change repair work portion, the flexible operation is more convenient.
According to the large-scale numerical control vertical four-spinning-wheel spinning machine, through reasonable structural layout design, the axial feeding of the spinning pillow assembly on the upright column frame and the radial feeding control precision of the spinning wheel are high, the spinning machining precision and the spinning working pressure of the large-scale numerical control vertical four-spinning-wheel spinning machine are greatly improved, and the machining requirement of a large-scale spinning piece can be met; and has the advantages of convenient processing and manufacturing, convenient transportation and assembly, high assembly precision and the like. The spinning machine has high spindle rotation precision and strong bearing capacity, and is convenient for the installation and the disassembly of the spindle bearing. The four axial driving oil cylinders have good synchronization and consistency of axial lifting control of the rotary wheel ram assembly, and the spinning processing precision and stability are improved. The rotary wheel bearing has good heat dissipation and lubrication effects, and improves the working stability and service life of the bearing. The bottom of the axial sliding frame is integrated with a demoulding unloading mechanism and a mould repairing mechanism, so that the axial feeding motion of a spinning roller slide pillow assembly of the vertical four-spinning roller spinning machine can be utilized to realize demoulding of spinning workpieces and repairing of spinning moulds, and the functionality and the operation convenience of the vertical four-spinning roller spinning machine are improved.

Claims (10)

1. A large-scale numerical control vertical four-spinning-wheel spinning machine is characterized in that: comprises a rotary wheel slide pillow assembly (100), a stand column frame (200) and a lathe bed assembly (300), wherein,
the upright post frame (200) is provided with four upright posts (21) which are distributed in a rectangular shape, the tops of the four upright posts (21) are fixedly connected through a rectangular upper top cover (22), each upright post (21) comprises a lathe bed connecting section (216) positioned at the lower part and a vertical guide rail mounting section (214) positioned above the lathe bed connecting section (216), each vertical guide rail mounting section (214) is provided with an inner concave part, two vertical guide rail mounting surfaces (215) which are perpendicular to each other are formed in the inner concave part, each inner concave part of each upright post (21) faces the inner side of the upright post frame (200), and adjacent vertical guide rail mounting surfaces (215) in two adjacent upright posts (21) are parallel; the vertical guide rail mounting surfaces (215) are fixedly arranged on the axial guide rail (211);
the lathe bed assembly (300) is arranged at the lower part of the upright post frame (200) and comprises a main lathe bed (31) and a main shaft (32) arranged at the center of the main lathe bed (31), and the main lathe bed (31) is fixedly connected with lathe bed connecting sections (216) of four upright posts (21) respectively;
the rotary wheel sliding pillow assembly (100) comprises an axial sliding frame (11), sliding frame connecting pieces (12), a rotary wheel assembly (13), an axial driving oil cylinder (14), a radial sliding frame (15) and a radial driving oil cylinder (16), wherein the axial sliding frame (11) is provided with four groups in a cross shape, the axial sliding frames (11) are opposite in pairs, the side walls of two adjacent groups of axial sliding frames (11) are respectively and fixedly connected together through the sliding frame connecting pieces (12), and each group of axial sliding frames (11) are positioned between two corresponding adjacent upright posts (21); the four groups of carriage connectors (12) are respectively positioned in the concave parts of the vertical guide rail mounting sections (214) of the corresponding upright posts (21), and each group of carriage connectors (12) is in sliding fit with the axial guide rail (211) on the corresponding upright post (21); each group of the carriage connecting pieces (12) and the upper top cover (22) are respectively connected through a group of axial driving oil cylinders (14), and the four groups of axial driving oil cylinders (14) drive the axial carriage (11) to axially move in an integral axial lifting manner; each group of axial sliding frames (11) are internally provided with a group of radial sliding frames (15) in a sliding way along the radial direction, the front ends of the radial sliding frames (15) are respectively provided with a rotary wheel assembly (13), and each group of radial sliding frames (11) and the corresponding radial sliding frames (15) are respectively provided with a radial driving oil cylinder (16).
2. The large-scale numerically-controlled vertical four-wheel spinning machine as set forth in claim 1, wherein: the upper top cover (22) comprises two U-shaped top cover members (221), the butt joint parts of the two top cover members (221) are oppositely connected through flange plates (222) in a flange mode to form a rectangular frame, top cover positioning keys (224) are arranged on the connection parts of the lower end faces of the top cover members (221) and the top faces of corresponding upright posts (21) at least in two mutually perpendicular directions, and the side faces of the top cover members (221) are connected with the corresponding upright posts (21) through a plurality of top cover adjusting blocks (223).
3. The large-scale numerically-controlled vertical four-wheel spinning machine as set forth in claim 1, wherein: the bed connecting section (216) of each upright post (21) is provided with two mutually perpendicular bed connecting surfaces, and the two bed connecting surfaces of each upright post (21) are fixedly connected with two adjacent side walls on the main bed (31) through a right-angle connecting piece (23); the lower parts of two adjacent upright posts (21) are respectively connected through a reinforcing cross beam (24).
4. The large-scale numerically-controlled vertical four-wheel spinning machine as set forth in claim 1, wherein: the main shaft (32) is installed on a main lathe bed (31) through a main shaft sleeve (33), the main shaft sleeve (33) comprises an upper shaft sleeve (331) and a lower shaft sleeve (332), the upper shaft sleeve (331) and the lower shaft sleeve (332) are fixedly connected together through bolts, the connection part of the upper shaft sleeve (331) and the lower shaft sleeve (332) is circumferentially connected through a main shaft sleeve connecting key (38), and the main shaft (32) is rotatably installed in the main shaft sleeve (33) through a main shaft radial bearing (341), a main shaft axial bearing (342) and a main shaft centering bearing (343) from top to bottom in sequence.
5. The large-scale numerically-controlled vertical four-wheel spinning machine as set forth in claim 1, wherein: the axial driving oil cylinders (14) are of inverted structures, the upper end parts of piston rods of the axial driving oil cylinders (14) are connected with the upper top cover (22), the cylinder bodies of the axial driving oil cylinders (14) are connected with corresponding carriage connecting pieces (12), and inlet and outlet openings of the axial driving oil cylinders (14) are arranged at the upper ends of the piston rods; the four groups of axial driving oil cylinders (14) are controlled by adopting a synchronous lifting hydraulic control system, the synchronous lifting hydraulic control system comprises an axial oil cylinder electromagnetic valve (141) and two hydraulic distributors (142), the axial oil cylinder electromagnetic valve (141) and the hydraulic distributors (142) are respectively arranged at the top of an upper top cover (22), the axial oil cylinder electromagnetic valve (141) is respectively connected with the two hydraulic distributors (142) through a first oil inlet and return pipeline (143), and the lengths of the two groups of first oil inlet and return pipelines (143) connected with the hydraulic distributors (142) are equal; each hydraulic distributor (142) is connected with the corresponding two axial driving oil cylinders (14) through a second oil inlet and return pipeline (144), the lengths of four groups of second oil inlet and return pipelines (144) connected with each axial driving oil cylinder (14) are equal, and the first oil inlet and return pipeline (143) and the second oil inlet and return pipeline (144) are hard oil pipes; an axial grating ruler (25) arranged along the axial direction is further arranged between the carriage connecting piece (12) and the corresponding upright post (21).
6. The large-scale numerically-controlled vertical four-wheel spinning machine as set forth in claim 1, wherein: the axial sliding frame (11) adopts an assembling structure and comprises an upper frame (111), a lower frame (112), side connecting frames (113) and a rear connecting plate (114), wherein the left side, the right side and the rear side of the upper frame (111) and the lower frame (112) are respectively spliced together up and down through the side connecting frames (113) and the rear connecting plate (114) on the left side and the right side, a sliding cavity for the installation of a radial sliding frame (15) is formed between the upper frame (111) and the lower frame (112), the upper part of the sliding cavity is provided with a radial upper guide rail (111 a) installed on the upper frame (111), and the lower part of the sliding cavity is provided with a radial lower guide rail (112 a) installed on the lower frame (112); a radial upper sliding block (151) which is in sliding fit with the radial upper guide rail (111 a) is arranged on the upper side of the radial sliding frame (15), and a radial lower sliding block (152) which is in sliding fit with the radial lower guide rail (112 a) is arranged on the lower side of the radial sliding frame (15); the rotary wheel assembly (13) is arranged on a front seat plate (153) of the radial sliding frame (15), the rear end of the radial driving oil cylinder (16) is connected with a rear connecting plate (114), and the front end of the radial driving oil cylinder (16) is connected with the back surface of the front seat plate (153); the rear end of the radial driving oil cylinder (16) is fixedly provided with an oil cylinder control valve block (16 a), the oil cylinder control valve block (16 a) is a proportional servo valve, and a radial grating ruler arranged along the radial direction is further arranged between the axial sliding frame (11) and the radial sliding frame (15).
7. The large-scale numerically-controlled vertical four-wheel spinning machine as set forth in claim 6, wherein: upper frame side connecting parts (111 b) are respectively arranged on the left side and the right side of the upper frame (111), and lower frame side connecting parts (112 b) are respectively arranged on the left side and the right side of the lower frame (112); the side connecting frame (113) comprises an inner side connecting plate (113 a), an intermediate connecting plate (113 b) and an outer side connecting plate (113 c), wherein the inner side connecting plate (113 a) and the outer side connecting plate (113 c) are fixedly connected together through a plurality of intermediate connecting plates (113 b), the inner side connecting plate (113 a) is connected with an upper frame side connecting part (111 b) and a lower frame side connecting part (112 b) on the corresponding sides through bolts and stress pin shafts, and the outer side connecting plate (113 c) is connected with a sliding frame connecting piece (12) on the corresponding sides through bolts and stress pin shafts.
8. The large-scale numerically-controlled vertical four-wheel spinning machine as set forth in claim 1, wherein: the rotary wheel assembly (13) comprises a rotary wheel seat (131), a rotary wheel (132) and a rotary wheel shaft (133), wherein the rotary wheel (132) is fixedly arranged at the lower end of the rotary wheel shaft (133), a sealed bearing chamber is arranged in the rotary wheel seat (131), the rotary wheel shaft (133) sequentially passes through a rotary wheel shaft centering bearing (134), a rotary wheel shaft axial bearing (135) and a rotary wheel shaft radial bearing (136) from top to bottom to be arranged in the bearing chamber of the rotary wheel seat (131), a heat dissipation jacket (131-1) is arranged on the side wall of the rotary wheel seat (131), a cooling liquid inlet (131-2), a cooling liquid outlet (131-3), a lubricating oil inlet (131-4) and a lubricating oil outlet (131-5) are respectively arranged on the rotary wheel seat (131), the cooling liquid inlet (131-2) is communicated with the heat dissipation jacket (131-1) through a liquid inlet channel (131-7), and the cooling liquid outlet (131-3) is communicated with the heat dissipation jacket (131-1) through a liquid outlet channel (131-8) to form a circulating cooling loop; the lubricating oil inlet (131-4) is communicated with the bearing chamber through the oil inlet channel (131-6), and the lubricating oil outlet (131-5) is communicated with the bearing chamber through the oil outlet channel to form a circulating cooling lubricating loop.
9. The large-scale numerically-controlled vertical four-wheel spinning machine as set forth in claim 1, wherein: the lower parts of the four groups of axial sliding racks (11) are respectively provided with a demolding and unloading assembly (17), the demolding and unloading assembly (17) comprises a linear driver (171), a guide sliding block (173), a guide seat (174) and a claw (175), the linear driver (171) and the guide seat (174) are respectively arranged at the bottoms of the corresponding axial sliding racks (11), the guide sliding blocks (173) are slidably arranged on the guide seats (174), the claw (175) is fixed at the front end of the guide sliding block (173), the rear end of the guide sliding block (173) is in transmission connection with the driving end of the linear driver (171), and the linear driver (171) drives the guide sliding block (173) and the claw (175) to radially stretch out and retract; the telescopic movement direction of the clamping jaw (175) is consistent with the telescopic movement direction of the rotary wheel assembly (13).
10. The large-scale numerically-controlled vertical four-wheel spinning machine as set forth in claim 1, wherein: the bottom of at least one group of axial sliding frames (11) is further provided with a die repairing mechanism (18), the die repairing mechanism (18) comprises a fixed seat (181), a sliding bracket (183), a cutter mounting seat (184), a repairing working part (185) and a servo screw transmission mechanism, the fixed seat (181) is fixedly arranged at the bottom of the axial sliding frames (11), the sliding bracket (183) is linearly and slidingly arranged on the fixed seat (181), the servo screw transmission mechanism is arranged between the fixed seat (181) and the sliding bracket (183) and is used for driving the sliding bracket (183) to move back and forth on the fixed seat (181), the cutter mounting seat (184) is fixed on the front end surface of the sliding bracket (183), and the repairing working part (185) is detachably arranged on the cutter mounting seat (184); the repair work portion (185) is a turning tool assembly or a polishing assembly.
CN202310026851.2A 2023-01-09 2023-01-09 Large-scale numerical control vertical four-spinning-wheel spinning machine Active CN116037749B (en)

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4747284A (en) * 1986-08-05 1988-05-31 Robert Hudson Metal spinning machine carriage and process for the operation of a metal spinning machine
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CN201385079Y (en) * 2009-04-03 2010-01-20 嘉兴市四通车轮制造有限公司 Vertical three-spinning-roller spinning machine
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