CN115592000A

CN115592000A - Spinning forming machine and wheel spoke plate forming method

Info

Publication number: CN115592000A
Application number: CN202211609074.6A
Authority: CN
Inventors: 崔平; 王彦民; 张丰
Original assignee: Shijiazhuang Zhongxing Machinery Manufacturing Co ltd
Current assignee: Shijiazhuang Zhongxing Machinery Manufacturing Co ltd
Priority date: 2022-12-15
Filing date: 2022-12-15
Publication date: 2023-01-13

Abstract

The application relates to the field of a basic non-cutting machining technology of metal plate profiles, in particular to a spinning forming machine and a wheel spoke plate forming method. The spinning forming machine comprises a frame, a lower spinning die assembly, a sliding assembly and an upper rolling assembly; the lower rotary die assembly is arranged on a base of the frame, comprises a lower rotary circular die for placing a blank and can rotate around a central axis; the sliding assembly is arranged on the top seat of the frame; the sliding block assembly can move along the direction of a central axis; the upper rolling assembly comprises a rolling head component and a rolling bracket, the rolling head component is connected with one end of the rolling bracket, and the other end of the rolling bracket is fixedly connected with the sliding block component; the rolling head component can rotate relative to the rolling bracket; the sliding assembly drives the upper rolling and grinding assembly to move, and the upper rolling and grinding assembly has a spinning state which is in contact with the blank arranged on the lower rotary circular die and is used for machining and forming the blank. This application is once gradually taken shape through the mode that rolls, and the shaping precision is high, and the die damage is little longe-lived.

Description

Spinning forming machine and wheel spoke plate forming method

Technical Field

The application relates to the field of a basic non-cutting machining technology of metal plate profiles, in particular to a spinning forming machine and a wheel spoke plate forming method.

Background

The rim and the spoke are important components forming the wheel. The rim is commonly called a rim, is a part for supporting a tire on a wheel, and forms the wheel with a spoke. Spokes are members for protecting the rim of a vehicle wheel, and in the case of a web-type spoke, usually a circular web, the diameter of the web is of a size close to that of the rim in which it is mounted. The center of the wheel disk is provided with a hole for arranging the rotating shaft of the wheel. The rim and spoke plate type spoke structures are mostly adopted by large-scale agricultural machinery and mainstream household cars.

In the prior art, a forging method is generally adopted for forming a spoke, a forging forming machine adopts large-area punch forming, multiple forging presses of 8000-12000 tons are required to be adopted for multiple times of forging forming when the spoke plate of the wheel is processed, the process manufacturing method is complex in process and low in production efficiency, the repeated multiple forging forming can seriously wear a die, the service life of the die is influenced, and the die is replaced to increase the production cost. And because the blank of the spoke that is forged and formed many times repeatedly, the blank shaping manufacturing accuracy is not high, and the precision of the product of obtaining is relatively low.

Metal spinning is a technique of forming a shape by rotating a blank to force a point of stress from a point to a line and from a line to a surface, and by applying a predetermined pressure in a predetermined direction with a hob to deform and flow a metal material in the predetermined direction. For the manufacture of spokes, it is a process of machining deformation forming on a metal blank, and therefore spin forming is one way that can be tried.

Therefore, the inventor designs a spinning forming machine and applies the spinning forming machine to the forming process of the wheel spoke plate so as to improve the blank processing precision and save the production cost.

Disclosure of Invention

In order to solve the problem that the forming precision of the conventional wheel spoke plate blank is not high, the application provides a spinning forming machine and a wheel spoke plate forming method.

The spinning forming machine and the wheel spoke plate forming method adopt the following technical scheme:

in a first aspect, the present application provides a spinning forming machine, which adopts the following technical scheme:

a spin-forming machine comprising:

a frame; comprises a base, a top seat and an upright post arranged between the base and the top seat;

a lower rotary die assembly; the base is arranged on the rack; the lower rotary die assembly comprises a lower rotary circular die for placing a blank; the lower rotary circular die can rotate around the central axis;

a sliding assembly; the top seat is arranged on the rack; the sliding assembly comprises a slider component which can move along the central axis direction;

the upper rolling assembly comprises a rolling head component and a rolling bracket, the rolling head component is connected with one end of the rolling bracket, and the other end of the rolling bracket is fixedly connected with the sliding block component; the rolling head assembly can rotate relative to the rolling bracket;

the sliding assembly drives the upper rolling and grinding assembly to move, and the upper rolling and grinding assembly is in a spinning state which is in contact with a blank arranged on the lower rotary circular die and is used for machining and forming the blank.

Through adopting above-mentioned technical scheme, will wait to process the blank and place on the lower rotary die of lower rotary die assembly, the drive of slip assembly is rolled the assembly and is removed on, makes the roll head subassembly of rolling the assembly and contradict with the blank, along with lower rotary die pivoted blank under the extrusion of roll head subassembly shaping. Compared with the traditional forging equipment, the forming machine gradually forms in one step by a rolling mode, and has the advantages of small forming power, high forming precision, small damage to a die and long service life.

Optionally, the sliding assembly further comprises a slider driving mechanism;

one end of the slide block driving mechanism is fixedly arranged on the top seat;

the other end of the sliding block driving mechanism is fixedly connected with the sliding block component and can drive the sliding block component to move;

the sliding block component is sleeved on the stand column of the rack.

Through adopting above-mentioned technical scheme, the structural component of sliding assembly is disclosed.

Optionally, a through grinding shaft through hole is formed at one end of the rolling support connected with the rolling head assembly;

the rolling head component comprises a rolling rotating shaft, and one end of the rolling rotating shaft penetrates through the rolling shaft through hole;

the rolling shaft is rotatably sleeved with a rolling die, and a self-aligning roller bearing and/or a tapered roller bearing are/is arranged between the rolling die and the rolling rotating shaft.

By adopting the technical scheme, the structural composition of the upper rolling assembly is disclosed. Through the cooperation of the rolling shaft and the rolling die, rolling extrusion can be realized. Through setting up roller bearing, can adjust the stress state of rolling the in-process. When aiming at different molding structures, only the roller die needs to be replaced, the cost is low, and the adaptability is good.

Optionally, a shaft end is arranged at one end of the rolling rotating shaft, which is far away from the rolling support, and the shaft end is tightly matched with the rolling die through a sealing ring.

Through adopting above-mentioned technical scheme, seal roller bearing through seal structure.

Optionally, the upper roll assembly comprises two sets of roll head assemblies and roll supports arranged symmetrically about the central axis; the rolling rotating shafts of the two groups of rolling head assemblies are coaxial, and the rotating directions of the rolling dies of the two groups of rolling head assemblies are opposite.

By adopting the technical scheme, the rolling dies are symmetrically arranged, the lengths of the single rolling die and the rolling grinding rotating shaft are limited, the stress is uniform, the forming performance is good, and the damage of the rolling dies is small. And can be better adapted to the processing of large-size blanks.

Optionally, the lower rotary die assembly further comprises a lower die mounting frame, a lower die rotating shaft and a lower rotary driving mechanism;

the lower rotary circular die can be fixedly arranged on the lower die mounting frame; the lower die mounting frame is fixedly mounted at one end of the lower die rotating shaft, and the lower rotary driving mechanism is in transmission with the other end of the lower die rotating shaft.

Through adopting above-mentioned technical scheme, disclosed the structure of spiral mould assembly down. The lower rotary driving mechanism drives the lower die rotating shaft to rotate, so that the lower die mounting frame is driven to rotate, the lower rotary circular die is driven to rotate, and then the blank is rotated.

Optionally, the lower die rotating shaft is provided with a shaft sleeve, and the shaft sleeve is fixedly arranged on the base;

and a rolling bearing is arranged between the lower die rotating shaft and the shaft sleeve.

Through adopting above-mentioned technical scheme, it is provided with the axle sleeve to disclose the lower mould axis of rotation, and the axle sleeve sets up on the base, when conveniently fixing on the base and fixing, makes things convenient for the lower mould axis of rotation to rotate.

Optionally, the spinning forming machine is further provided with a spraying device, the spraying device comprises a nozzle, and the spraying direction of the nozzle faces the surface of the blank placed on the lower spinning circular die.

Through adopting above-mentioned technical scheme, disclosed has set up spray set to the temperature of equipment and blank in the reduction course of working.

In a second aspect, the present application provides a method for forming a wheel web, which adopts the following technical solution:

the wheel spoke forming method for processing the wheel spoke by using the spinning forming machine comprises the following steps:

placing the wheel spoke plate blank on a lower rotary die of a lower rotary die assembly;

starting the sliding assembly to move to drive the rolling head assembly of the upper rolling assembly to abut against the wheel spoke plate blank;

starting the lower rotary die assembly to rotate to drive the wheel spoke plate blank on the lower rotary circular die to rotate; rolling and molding the wheel spoke plate blank;

and taking off the formed wheel disc.

By adopting the technical scheme, the main steps of processing the wheel web by using the spinning forming machine are disclosed.

Optionally, the lower rotary circular die is provided with a boss in the center of the surface where the blank is placed, the boss is matched with a spoke hole formed in the center of the blank, and when the blank is placed on the lower rotary circular die, the spoke hole is sleeved on the boss.

By adopting the technical scheme, the structure of the lower rotary die for processing the wheel web by using the rotary pressing forming machine is disclosed. Through setting up the boss and cooperating with the spoke plate hole, be convenient for fixed blank to place the spoke plate centre bore and take place the shrinkage cavity.

The application comprises at least one of the following beneficial technical effects:

1. the blank to be processed is placed on the lower rotary circular die of the lower rotary die assembly, the sliding assembly drives the upper rolling assembly to move, so that the rolling head assembly of the upper rolling assembly is abutted to the blank, and the blank rotating along with the lower rotary circular die is formed under the extrusion effect of the rolling head assembly.

2. This application compares with traditional forging apparatus, once gradually takes shape through the mode that rolls, and shaping power is little, and the shaping precision is high, and the die damage is little longe-lived to help reduction in production cost.

Drawings

Fig. 1 is a schematic cross-sectional structural view of an embodiment of the spinning forming machine of the present application.

Fig. 2 is a schematic cross-sectional view of another embodiment of the spin-on molding machine of fig. 1.

FIG. 3 is a cross-sectional schematic view of an embodiment of a sliding assembly of the spin-on molding machine of the present application.

Fig. 4 is a schematic cross-sectional view of an embodiment of an upper rolling assembly of the spinning forming machine of the present application.

FIG. 5 is a cross-sectional schematic view of one embodiment of a symmetrically arranged slider assembly of the spin-on molding machine of the present application.

FIG. 6 is a schematic cross-sectional view of a lower spinning die assembly of the spinning forming machine of the present application.

FIG. 7 is a schematic top view of the lower rotary die and blank of the rotary press machine according to the present invention.

FIG. 8 is a schematic cross-sectional view of a lower rotary die and a blank of the rotary press according to an embodiment of the present invention.

Fig. 9 is a schematic view of a part a of the enlarged structure in fig. 8.

FIG. 10 is a schematic structural view of an embodiment of a wheel web of the present application prior to processing.

FIG. 11 is a schematic structural view of an embodiment of the present application after processing of a wheel disc.

Description of reference numerals:

1. a frame; 11. a base; 12. a top seat; 13. a column;

2. a sliding assembly; 21. a slider assembly; 22. a slider drive mechanism;

3. an upper rolling assembly; 31. rolling the bracket; 32. a roll-milling head assembly; 321. rolling the rotating shaft; 322. rolling the mold; 323. a self-aligning roller bearing; 324. a tapered roller bearing; 325. a shaft end; 326. a seal ring; 327. screwing nuts;

4. a down-rotation mold assembly; 41. downward rotating the circular mold; 411. a boss; 42. a down-rotation driving mechanism; 421. a motor; 43. a lower die mounting rack; 431. positioning pins; 44. a lower die rotating shaft; 441. a shaft sleeve; 442. a rolling bearing;

5. a web; 51. the spoke holes.

Detailed Description

The present application is described in further detail below with reference to the attached drawings.

The embodiment discloses a spinning forming machine.

Referring to fig. 1-2, in the present embodiment, includes: the device comprises a frame 1, a sliding assembly 2, an upper rolling and grinding assembly 3 and a lower rotating die assembly 4. The frame 1 comprises a base 11, a top base 12 and a vertical column 13 arranged between the base 11 and the top base 12. The sliding assembly 2 is fixedly arranged on a top seat 12 of the frame 1, the upper rolling assembly 3 is fixed below the sliding assembly 2, and the sliding assembly 2 can drive the upper rolling assembly 3 to move up and down. The lower rotary die assembly 4 is arranged on a base 11 of the frame 1, and a blank to be processed is fixedly placed on the lower rotary die assembly 4. For processing a flat workpiece, a horizontally arranged lower rotary die 41 of a disk shape such as a spoke of a processing wheel is used; for the processing of the vertical face structure, a cylindrical circular mold may be used, and the blank to be processed is sleeved on the lower rotary circular mold 41, such as a rim of a processing wheel. The following description will be given by taking a planar workpiece as an example, and the adaptability improvement can be performed on a workpiece with a vertical structure.

Referring to fig. 1-2, in the present embodiment, the base 11 and the top 12 of the frame 1 are horizontally disposed, and the upright 13 is fixedly and vertically disposed between the base 11 and the top 12.

Referring to fig. 1-3, in the present embodiment, the sliding assembly 2 is disposed on the top seat 12 of the frame 1, and the sliding assembly 2 includes a slider assembly 21 and a slider driving mechanism 22, and the slider assembly 21 can move up and down in the vertical direction. The slide block driving mechanism 22 adopts a hydraulic oil cylinder which can bear larger pressure, has simple structure, stable and reliable performance and convenient use and maintenance, one end of the hydraulic oil cylinder is fixedly arranged on the top seat 12, and the other end of the hydraulic oil cylinder is fixedly connected with the slide block component 21. Slider assembly 21 moves the suspension structure for horizontal arrangement, and hydraulic cylinder can drive slider assembly 21 and reciprocate. In order to further improve the stability that slider assembly 21 removed the in-process that reciprocates, slider assembly 21 cover is established on stand 13 of frame 1. When the sliding block assembly is used, the hydraulic oil cylinder can be controlled to drive the suspension structure of the sliding block assembly 21 to move up and down.

Referring to fig. 2 and 4, in the present embodiment, the upper roll assembly 3 includes a roll element 32 and a roll housing 31, the roll element 32 is connected to one end of the roll housing 31, the other end of the roll housing 31 is fixedly connected to the slider assembly 21, and the roll element 32 is rotatable with respect to the roll housing 31. Specifically, a through-hole is formed at one end of the roll holder 31 connected to the roll head assembly 32, and one end of the roll rotation shaft 321 of the roll head assembly 32 penetrates the through-hole. A rolling die 322 is rotatably fitted around the rolling shaft, and a self-aligning roller bearing 323 and a tapered roller bearing 324 are provided between the rolling die 322 and the rolling rotation shaft 321. A shaft head 325 is provided at an end of the rolling rotation shaft 321 remote from the rolling bracket 31, and the shaft head 325 is closely fitted to the rolling mold 322 by a packing 326 to enclose the bearing between the rolling rotation shaft 321 and the rolling mold 322. The rolling support 31 suspends the rolling rotation shaft 321 to be driven to move up and down, and a clamping nut 327 is provided between the rolling support 31 and the adjacent rolling die 322. The roll die 322 is rotated with the roll rotation shaft 321 so that the roll head assembly 32 can be rotated with respect to the roll housing 31. When the device is used, the rolling support 31 is fixedly connected to the sliding block assembly 21, and the rolling head assembly 32 is connected to the rolling support 31, so that the rolling head assembly 32 is controlled to move up and down along with the control of the hydraulic oil cylinder to drive the suspension structure of the sliding block assembly 21, and the rolling head assembly 32 is controlled to move up and down to be abutted against or separated from a blank to be processed. In addition, in use, when different blanks need to be processed, only the rolling die 322 with different shapes needs to be replaced.

Referring to fig. 5, in the present embodiment, in order to improve efficiency and improve the force uniformity of the blank during the processing, the upper rolling assembly 3 includes two sets of rolling head assemblies 32 and rolling supports 31 symmetrically arranged about the central axis; the rolling rotation shafts 321 of the two groups of rolling head assemblies 32 are coaxial, and the rotation directions of the rolling dies 322 of the two groups of rolling head assemblies 32 are opposite. Of course, the provision of a single roll head assembly 32 and roll stand 31 also allows production to be achieved, differing primarily in efficiency and accuracy, as well as in the life of the roll head assembly 32. Through testing, when only a single roll-head assembly 32 is provided, and the arrangement is as shown in the figure, only half the length of the blank, the processing efficiency is not high; when only setting up single roll head subassembly 32, and under length reached the whole blank length's the condition, the length of roll head subassembly 32 is longer, and the one end atress that roll head subassembly 32 is close to roll support 31 is better, rolls the effect better, but the one end atress of keeping away from roll support 31 can worsen relatively, rolls effect, precision then inadequately, and to under the longer situation, roll head subassembly 32 is easy because the inhomogeneous production of atress damages. Especially for the rim production of the agricultural large wheel, the difference of the effect is obvious, and the forming effect of one end close to the rolling support 31 is obviously better than that of one end far away from the rolling support 31. Of course, more sets of roll head assemblies 32 and roll stands 31 may be provided as desired, but not as many as is desirable due to rolling space and equipment cost considerations.

Referring to fig. 6-9, in the present embodiment, the lower rotary die assembly 4 is disposed on the base 11 of the frame 1. The lower rotary die assembly 4 includes a lower rotary die 41 for placing a blank, a lower die mounting frame 43, a lower die rotary shaft 44, a lower rotary drive mechanism 42, and the like. The lower rotary die 41 is used for placing a blank and can rotate, and the center of rotation is around the central axis of the lower rotary die 41. In use, different lower rotary dies 41 can be replaced according to the requirements of the workpiece to be processed. For processing a plane workpiece, such as processing a spoke of a wheel, a horizontally arranged disc-shaped lower rotary die 41 is used, the lower rotary die 41 is provided with a boss 411 at the center of the surface for placing a blank, the boss 411 is matched with AA51 arranged at the center of the blank, and when the blank is placed on the lower rotary die 41, the AA51 is sleeved on the boss 411. For a workpiece with a vertical face structure, such as a rim of a wheel, a cylindrical circular mold may be used, and a blank to be processed is fitted over the cylindrical lower rotary circular mold 41. The following description of the structure of the lower rotary die assembly 4 is given by taking a planar workpiece as an example, and the adaptability of the workpiece with a vertical structure can be improved. Specifically, circle of spiraling 41 can fixed mounting on lower mould mounting bracket 43 down, and circle of spiraling 41 constructs at the opposite surface of placing the blank and is equipped with the location shrinkage pool down, and the surface that leans on circle of spiraling 41 of lower mould mounting bracket 43 constructs and is equipped with the locating hole, and the locating hole corresponds with the location shrinkage pool, wears to establish in locating hole and location shrinkage pool through locating pin 431 to circle of spiraling 41 will be fixed on lower mould mounting bracket 43 down. The lower mold mounting bracket 43 is fixedly mounted at one end of the lower mold rotation shaft 44, and the lower rotation driving mechanism 42 is drivingly connected to the other end of the lower mold rotation shaft 44. The lower mold rotating shaft 44 is vertically arranged, the lower mold rotating shaft 44 is provided with a shaft sleeve 441, the shaft sleeve 441 is fixedly arranged on the base 11, a rolling bearing 442 is arranged between the lower mold rotating shaft 44 and the shaft sleeve 441, and the rolling bearing 442 can be a self-aligning roller bearing 323, a tapered roller bearing 324 or other rolling bearings 442. The lower rotation driving mechanism 42 includes a motor 421, and a motor 421 output gear provided on an output shaft of the motor 421. The lower rotary driving mechanism 42 is provided with a lower mold shaft gear at the connecting end with the lower mold rotating shaft 44, and the output gear of the motor 421 can be meshed with the lower mold shaft gear to drive the lower mold shaft gear to rotate. Of course, the electric motor 421 may also be replaced by a hydraulic motor, and the ratio of the energy transmitted by the hydraulic motor to the self weight is small compared with other transmission modes, so that a large force and a large torque are more easily obtained, the starting torque is large, and the starting performance is strong. When the die is used, the lower die rotating shaft 44 is driven to rotate by the starting motor 421, so that the lower die mounting frame 43 is driven to rotate, the lower rotary circular die 41 is driven to rotate, and the lower rotary circular die 41 drives a blank to rotate. For a workpiece with a vertical surface structure, the lower rotary die 41 is only required to be arranged to rotate around the central axis in the horizontal direction, the directions of the corresponding lower die mounting frame 43 and the corresponding lower die rotating shaft 44 are correspondingly adjusted, and the motor 421 is driven to rotate to the direction to change the vertical direction into the horizontal direction.

In the embodiment of this application, when using, on the lower circle mould 41 of lower mould assembly 4 is placed to the blank that will treat processing, through the slider actuating mechanism 22 of control slip assembly 2, the drive is gone up and is rolled assembly 3 and reciprocate to make the blank of placing on rolling mould 322 and the lower circle mould 41 contradict, lower circle mould 41 rotates under the drive of lower actuating mechanism 42, and the blank rotates along with it. During the rotation, the blank is pressed by the upper rolling die 322, so that a spinning state is formed.

In the embodiment of the present application, in order to reduce the temperature of the blank and the rolling die 322 during the spinning process, the spinning forming machine is further provided with a spraying device, the spraying device includes a nozzle, a water pipe and the like communicated with the nozzle, and the spraying direction of the nozzle faces the surface of the blank placed on the lower spinning circular die 41.

In the embodiment of the application, in order to avoid safety accidents in the machining process, prevent splashing and provide safety, a protective cover (not shown in the figure) is further arranged.

In the embodiment of the application, an automatic control system and a plurality of signal acquisition sensors are further arranged, and the specific structure of the controller is arranged in the prior art, so that a PLC (programmable logic controller) is adopted. The device comprises sensors for detecting the rotating speed, the feeding speed, the lifting position sensor and the temperature, an access controller, a servo valve used as an execution element control circuit and hydraulic pressure, an access controller, a PLC (programmable logic controller) controller preset information input through an input module, and the like, and the production and processing process is controlled through the PLC controller. The specific contents are not described herein.

The application also discloses a method for forming the wheel spoke plate 5, and the method for processing the wheel spoke plate 5 by the spinning forming machine mainly comprises the following steps: placing the blank of the wheel spoke plate 5 on a lower rotary die 41 of a lower rotary die assembly; starting the sliding assembly 2 to move to drive the rolling head assembly 32 of the upper rolling assembly 3 to press the wheel web 5 blank; starting the lower rotary die assembly to rotate to drive the wheel web plate 5 blank on the lower rotary circular die 41 to rotate; rolling and molding the blank of the wheel spoke plate 5; the formed wheel web 5 is removed. Naturally, other details of the operation steps are included, reference is made to the preceding description and are not repeated.

When processing wheel rim, with lower rotary die assembly change for the cylindrical lower rotary die 41 that is fit for rim production, do the adjustment adaptation of suitability to other mechanisms, will go up the rolling die 322 of rolling assembly 3 and change for the rolling die 322 that is fit for rim production, adopt the same step can produce, specifically not being repeated.

Through my department's test, the spinning forming machine of this application all has fine performance in the aspect of production wheel radials 5, rim, and it compares with traditional forging equipment, once progressively takes shape through the mode that rolls, through the mutually supporting of last roll grinding head assembly and lower rotary die assembly, compresses tightly the extrusion with the blank of treating the processing work piece, and it is little area roll grinding extrusion forming to change forging large tracts of land punching press shaping into among the prior art. Thus, under the action of one percent of total forging action force, the forming effect can be achieved through gradual extrusion. The acting force required to be provided by the power mechanism is small, the requirement of the power mechanism is small, and the equipment cost and the energy consumption are effectively low. The single rolling has little influence on the material, the internal structure crystal form and the structure of the material have little influence, the possibility of generating blank crack damage is also low, the product obtained by the method has even stress, gradually forms at one time, and the finished product has high material strength. The production precision is well controlled, the failure rate of equipment is low, the abrasion of the rolling die 322 is small, and the production precision and the quality are obviously improved. Especially in the process of producing large-sized webs 5, the gap between energy consumption and precision control is significant.

Through my department's test, this application owing to through progressively rolling the shaping, can control better machining precision, especially in the department such as molding edge, flange, the shaping effect forges and can't reach, and the shaping effect of product is better. And because local quality is difficult to control in forging, therefore when the blank selects, often will select the material that is relatively thicker, can guarantee after forging that the thickness of thinnest processing control point reaches standard, then actually make the thickness of other positions far exceed and control minimum thickness, the product is qualified, but the quantity of total blank is great, and through the mode of rolling shaping, the blank then can select thinner, under the condition of higher shaping control, can guarantee that the thickness of each control point reaches standard. Thereby saving the use amount of the blank and effectively reducing the production cost. Especially in the process of producing wide rims and ultra-wide rims, the effect of local quality control and the effect of blank saving are obvious. In addition, for vehicles with low requirements on weight and energy consumption of vehicles such as agricultural machinery, the forging of thick blanks on the premise of meeting quality requirements is still acceptable at present, but for vehicles with high requirements on energy consumption such as automobiles, the self weight of the vehicles can be directly influenced by the rims forged by the thick blanks, so that the unit energy consumption of the vehicles is influenced, and the rims forged by the thick blanks obviously do not meet the requirement trend in the current trend of light weight and low energy consumption. And the rolling forming mode of the self can reduce the over-thickness phenomenon of other positions as far as possible under the condition of ensuring the thickness of key positions such as the thickness of the edge of the model and the quality requirement, thereby effectively controlling the material consumption, realizing the light weight, realizing the purposes of saving materials, saving the cost and realizing the light weight and meeting the technical development trend and the requirement.

The above are preferred embodiments of the present application, and the scope of protection of the present application is not limited thereto, so: equivalent changes in structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A spin-forming machine, comprising:

a frame (1); comprises a base (11), a footstock (12) and an upright post (13) arranged between the base (11) and the footstock (12);

a lower rotary die assembly (4); a base (11) arranged on the frame (1); the lower rotary die assembly (4) comprises a lower rotary circular die (41) for placing blanks; the lower rotary circular die (41) can rotate around a central axis;

a sliding assembly (2); a top seat (12) arranged on the frame (1); the sliding assembly (2) comprises a slider component (21), and the slider component (21) can move along the central axis direction;

the upper rolling assembly (3) comprises a rolling head assembly (32) and a rolling bracket (31), wherein the rolling head assembly (32) is connected with one end of the rolling bracket (31), and the other end of the rolling bracket (31) is fixedly connected with the sliding block assembly (21); said roll head assembly (32) being rotatable relative to said roll stand (31);

the sliding assembly (2) drives the upper rolling assembly (3) to move, and the upper rolling assembly is in contact with a blank placed on the lower rotary die (41) and is in a spinning state for machining and forming the blank.

2. The flow forming machine according to claim 1,

the sliding assembly (2) further comprises a sliding block driving mechanism (22);

one end of the slide block driving mechanism (22) is fixedly arranged on the top seat (12);

the other end of the sliding block driving mechanism (22) is fixedly connected with the sliding block assembly (21) and can drive the sliding block assembly (21) to move;

the sliding block component (21) is sleeved on the upright post (13) of the rack (1).

3. A flow forming machine according to claim 1,

one end of the rolling bracket (31) connected with the rolling head component (32) is provided with a through rolling shaft through hole;

the rolling head assembly (32) comprises a rolling rotation shaft (321), one end of the rolling rotation shaft (321) penetrates through the rolling shaft through hole;

the rolling shaft is rotatably sleeved with a rolling die (322), and a self-aligning roller bearing (323) and/or a tapered roller bearing (324) are arranged between the rolling die (322) and the rolling rotating shaft (321).

4. A flow forming machine according to claim 3,

and one end of the rolling rotating shaft (321) far away from the rolling bracket (31) is provided with a shaft end head (325), and the shaft end head (325) is tightly matched with the rolling die (322) through a sealing ring (326).

5. The flow forming machine according to claim 1,

the upper rolling assembly (3) comprises two groups of rolling head assemblies (32) and rolling brackets (31) which are symmetrically arranged along the central axis; the rolling rotating shafts (321) of the two groups of rolling head assemblies (32) are coaxial, and the rotating directions of the rolling dies (322) of the two groups of rolling head assemblies (32) are opposite.

6. A flow forming machine according to claim 1,

the lower rotary die assembly (4) also comprises a lower die mounting frame (43), a lower die rotating shaft (44) and a lower rotary driving mechanism (42);

the lower rotary circular die (41) can be fixedly arranged on the lower die mounting frame (43); the lower die mounting frame (43) is fixedly mounted at one end of the lower die rotating shaft (44), and the lower rotary driving mechanism (42) is in transmission connection with the other end of the lower die rotating shaft (44).

7. A flow forming machine according to claim 6,

the lower die rotating shaft (44) is provided with a shaft sleeve (441), and the shaft sleeve (441) is fixedly arranged on the base (11);

and a rolling bearing (442) is arranged between the lower die rotating shaft (44) and the shaft sleeve (441).

8. The flow forming machine according to claim 1,

the spinning forming machine is further provided with a spraying device, the spraying device comprises a nozzle, and the spraying direction of the nozzle faces the surface of the blank placed on the lower spinning circular die (41).

9. A method of forming a wheel web, characterized by using the spin forming machine of any one of claims 1 to 8 to process a wheel web (5), comprising the steps of:

placing a wheel spoke plate (5) blank on a lower rotary die (41) of a lower rotary die assembly;

the sliding assembly (2) is started to move to drive the rolling head assembly (32) of the upper rolling assembly (3) to abut against the blank of the wheel spoke plate (5);

starting the lower rotary die assembly to rotate to drive the wheel spoke plate (5) blank on the lower rotary circular die (41) to rotate; rolling and molding the blank of the wheel spoke plate (5);

and removing the formed wheel spoke plate (5).

10. The method of molding a wheel web according to claim 9,

circle of screwing down mould (41) is provided with boss (411) at the surface center of placing the blank, boss (411) and radials (5) hole phase-match that the blank center was seted up, the blank is placed when circle of screwing down mould (41) is gone up, radials (5) hole cover is established on boss (411).