CN101480670B - Squeezing-revolving shaping method of magnesium alloy wheel and device thereof - Google Patents

Squeezing-revolving shaping method of magnesium alloy wheel and device thereof Download PDF

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Publication number
CN101480670B
CN101480670B CN2009100736724A CN200910073672A CN101480670B CN 101480670 B CN101480670 B CN 101480670B CN 2009100736724 A CN2009100736724 A CN 2009100736724A CN 200910073672 A CN200910073672 A CN 200910073672A CN 101480670 B CN101480670 B CN 101480670B
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China
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spinning roller
box
roughcast
bearing
shaped rack
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CN2009100736724A
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Chinese (zh)
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CN101480670A (en
Inventor
张治民
马春生
王强
张宝红
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中北大学
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Publication of CN101480670B publication Critical patent/CN101480670B/en

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Abstract

The invention relates to a method and a device for spinning and forming a magnesium alloy wheel, adopting a cylinder-shaped prefabricated roughcast. The method is characterized in that the prefabricated roughcast is arranged on a core die, a flat surface pressure device is used for flaring the prefabricated roughcast by axially moving the prefabricated roughcast, then the prefabricated roughcast and the core die rotate together and the prefabricated roughcast is spun through the radical feeding movement of a rotating spinning roller having the same outline shape as the wheel along the prefabricated roughcast, so that the prefabricated roughcast is subjected to continuous partial plastic deformation along the radial direction, and finally a needed outline of the magnesium alloy wheel is formed. Furthermore, the device comprises a stand and a core die, wherein the stand is in a box shape and is a consistent temperature oil tank, and the box-shaped stand is internally provided with a spinning roller device, a core die rotating device, the flat surface pressure device and a tank cover. In addition, the invention solves the problems of the forming and the demoulding of a similar part of a wheel which is small at both ends and big in the middle, and has the advantages of consistent temperature extrusion, higher dimension precision of products, enhanced production efficiency, and the like.

Description

A kind of squeezing-revolving shaping method of magnesium alloy wheel and device thereof
Technical field
The present invention relates to plastic working technique and apparatus field, be mainly used in squeezing-revolving shaping method of magnesium alloy wheel and device thereof specifically.
Background technology
Magnesium alloy has series of advantages such as density is little, intensity is high, damping capacity is good, demonstrates huge superiority on automobile, and magnesium alloy vehicle wheel is the typical case that the young mobile part substitutes new material.At present, for magnesium alloy vehicle wheel, mainly contain casting and forge two kinds of processing modes:
1, cast magnesium alloy wheel: mainly adopt method manufacturings such as low pressure casting, compression casting, extrusion casint, existing both at home and abroad research report, but cast magnesium alloy wheel, intensity and toughness are lower, be difficult to satisfy the instructions for use of high-performance wheel, actual through engineering approaches is used and be yet there are no report.
2, wrought magnesium alloy wheel: have than higher intensity, better ductility and more diversified mechanical property, can satisfy the instructions for use of high-performance wheel.Carried out relevant research both at home and abroad, as: the disclosed magnesium alloy auto hub casting of China Patent No. ZL03100893.3-crowded combined shaping method, China Patent No. 200610012829.9 disclosed a kind of labor-saving automobile hub forming method and devices, China Patent No. 200810054600.0 disclosed a kind of magnesium alloy automobile wheel extrusion molding method and moulds, the building mortion of China Patent No. 200510010214.8 disclosed a kind of solid hot extrusion magnesium alloy wheel hubs and manufacturing process thereof etc., but, the deficiency that existing wrought magnesium alloy wheel manufacturing process exists, be that wheel rim is difficult to be shaped and demoulding difficulty, and the product precision is lower, stock utilization is lower, the production cost height, thereby be difficult to adapt to the demand of automobile industry fast development.
For wheel class flanged pin, cross section thickening degree revolving parts, spinning is effective forming technique.A kind of Mg alloy formed processing method (METHOD OF MAKINGAN ARTICLE OF MANUFCTURE MADE OF MAGNESIUM ALLOY) is disclosed as U.S. Pat 005902424A, adopt strand-forging-T6 to handle-swage-rolling mill practice, finish the manufacturing of magnesium alloy vehicle wheel.This method complex process, the routine of employing is swaged, rolling mill practice, and it is big to use difficulty concerning having the lower magnesium alloy of close-packed hexagonal lattice plasticity, swages or rolling equipment and device are not seen detailed report for magnesium alloy vehicle wheel.In addition, the mould pressing technology not only can be processed the hollow shaft symmetrical component, also can process the non-axial symmetry thin-walled hollow parts that is parallel to each other or forms an angle between the each several part axis, and the exploitation spinning lathe and device are arranged, as disclosed a kind of spin forming method of China Patent No. ZL02114937.2 and device thereof etc.But existing spinning lathe and device are difficult to be applied to the magnesium alloy mould pressing, more can't realize the mould pressing of magnesium alloy vehicle wheel.
Summary of the invention
The objective of the invention is to overcome the deficiency that prior art exists, provide a kind of solution wheel rim to be difficult to be shaped and release problems, simultaneously, can improve product precision and production efficiency, squeezing-revolving shaping method of magnesium alloy wheel that reduces production costs and device thereof.
For achieving the above object, the present invention is achieved in that
A kind of magnesium alloy vehicle wheel squeezing-revolving shaping device comprises frame and core, and it is characterized in that: described frame is a box-shaped rack with cover, also has spinning roller device, core tumbler, plane pressue device on box-shaped rack; Described core tumbler is loaded on the bottom of box-shaped rack, and core is loaded on core tumbler top; Described spinning roller device is loaded on the tank wall of box-shaped rack, and along the radial arrangement and the feeding of roughcast in advance; Described plane pressue device places above the pre-roughcast on the core.
Described spinning roller device comprises the spinning roller identical shaped with the magnesium alloy vehicle wheel outline, spinning roller axle, spinning roller support, side direction connecting rod, spinning roller bearing, spinning roller bearing gland, axle sleeve and spinning roller axle sleeve gland; Described side direction connecting rod passes axle sleeve, one end is fixedlyed connected with the spinning roller support, the other end stretches out box-shaped rack, spinning roller is fixedlyed connected by flat key with the spinning roller axle, the spinning roller axle is connected by the spinning roller bearing element with the spinning roller support, the spinning roller bearing gland is fixedly connected on the spinning roller support, and is pressed on the spinning roller bearing at spinning roller axle two ends; Side direction connecting rod and box-shaped rack rely on sleeve sealing;
Described core tumbler comprise power transmission shaft, drive bearing, large helical gear, bevel pinion, turning cylinder, rolling bearing, with the drive bearing gland; Described power transmission shaft rolls with box-shaped rack by bearing and is connected, and an end stretches out box-shaped rack, and the other end is fixedlyed connected with bevel pinion by key; Described turning cylinder rolls with the bottom of box-shaped rack by rolling bearing and is connected, and turning cylinder one end is fixedlyed connected with core by key, and the other end is fixedlyed connected with large helical gear by key; Turning cylinder passes the bottom of box-shaped rack and is provided with sealing ring, and described large and small helical gear is transmitted to turning cylinder with the moment of power transmission shaft input;
Described plane pressue device comprises axial compression bar, pressing plate, thrust bearing and journal bearing, bearing gland and Spring lock catch; Described axial compression bar one end is fixedlyed connected with the hydraulic press master cylinder, the other end passes thrust bearing and is connected with the pressing plate rolling by bearing gland, nut with journal bearing, bearing gland is fixedly connected on the pressing plate, and the compression axis thrust bearing and the journal bearing that pass to compressor arm; Pressing plate is provided with the boss that passes pre-roughcast centre bore, has Spring lock catch on the boss; Described axial compression bar passes case lid (6), and described pressing plate is flexible connection with pre-roughcast.
Described spinning roller device has two or three, when the spinning roller device has two, arranges along the radial symmetric of pre-roughcast; When the spinning roller device has three, along pre-roughcast radially and on circumference, be 120 ° of layouts.
A kind of magnesium alloy vehicle wheel of the present invention squeezes and to revolve method and device thereof compared with the prior art, has substantial technical characterstic and significant effect is:
(1) solved that wheel rim is difficult to be shaped and the problem of the demoulding, improved products surface quality and dimensional accuracy, the stock utilization height has been simplified technical process, reduced production cost.
(2) adopt the spinning roller identical with the product outer contour shape, the three-dimensional compressive stress of generation has improved the plasticity of magnesium alloy product, squeezes to revolve after the enlarging to have reduced the shaping difficulty;
(3) adopt insulating box, high temperature oil and temperature control to realize ausforming, as the lubricant of squeezing-revolving shaping, reduced friction simultaneously, improved the plasticity of magnesium alloy;
(4) apparatus of the present invention both can be used for special hydraulic press, also can be used for common hydraulic press, and working stability is reliable, and is simple to operate, improved production efficiency;
Description of drawings
Fig. 1 is the front view of magnesium alloy vehicle wheel squeezing-revolving shaping device of the present invention.
Fig. 2 is the vertical view of magnesium alloy vehicle wheel squeezing-revolving shaping device of the present invention.
Fig. 3 is the internal structure schematic diagram of magnesium alloy vehicle wheel squeezing-revolving shaping device of the present invention.
Fig. 4 is a magnesium alloy vehicle wheel finished product schematic diagram.
Fig. 5 is a wheel preform structure schematic diagram.
The specific embodiment
Below in conjunction with accompanying drawing with regard to the specific embodiment be elaborated (present embodiment is to further specify of the present invention, rather than any qualification that the present invention is made).
Illustrated in figures 1 and 2, warm extrusion cyclone such as magnesium alloy vehicle wheel of the present invention.A kind of magnesium alloy vehicle wheel squeezing-revolving shaping device comprises frame 1 and core 2, it is characterized in that: described frame 1 is box-shaped rack, also has spinning roller device 3, core tumbler 4, plane pressue device 5 and case lid 6 in box-shaped rack; Described core tumbler 4 is loaded on the bottom of box-shaped rack, and core is loaded on core tumbler 4 tops; Described spinning roller device 3 is loaded on the tank wall of box-shaped rack, and along the radial arrangement and the feeding of roughcast in advance; And described plane pressue device 5 places above the pre-roughcast 7 on the core.
The described spinning roller device of magnesium alloy vehicle wheel squeezing-revolving shaping device of the present invention can be one to three, if there are two, arranges along the radial symmetric of pre-roughcast; Described spinning roller device is if there are three, along pre-roughcast radially and on circumference, be 120 ° of layouts.
Shown in Figure 3, the internal structure schematic diagram of magnesium alloy vehicle wheel squeezing-revolving shaping device of the present invention.Spinning roller device 3 comprises that outline is provided with the spinning roller 301 identical shaped with the magnesium alloy vehicle wheel outline, spinning roller axle 302, spinning roller support 303, side direction connecting rod 304, spinning roller bearing 305, spinning roller bearing gland 306, axle sleeve 307 and spinning roller axle sleeve gland 308; Described side direction connecting rod passes axle sleeve, one end is fixedlyed connected with the spinning roller support, the other end stretches out box-shaped rack (can fixedly connected with hydraulic pressure pusher side cylinder), spinning roller is fixedlyed connected by flat key with the spinning roller axle, the spinning roller axle is connected by the spinning roller bearing element with the spinning roller support, the spinning roller bearing gland is fixedly connected on the spinning roller support, and is pressed on the spinning roller bearing at spinning roller axle two ends; Side direction connecting rod and box-shaped rack rely on sleeve sealing.
The core tumbler comprise power transmission shaft 401, drive bearing 402, large helical gear 403, bevel pinion 404, turning cylinder 405, rolling bearing 406, with drive bearing gland 407; Described power transmission shaft rolls with box-shaped rack by bearing and is connected, and an end stretches out box-shaped rack (can be connected with motor output shaft), and the other end is fixedlyed connected with bevel pinion by key; Described turning cylinder rolls with the bottom of box-shaped rack by rolling bearing and is connected, and turning cylinder one end is fixedlyed connected with core by key, and the other end is fixedlyed connected with bevel pinion by key; Turning cylinder passes the bottom of box-shaped rack and is provided with sealing 408, and described large and small helical gear is transmitted to turning cylinder with the moment of power transmission shaft input.
The plane pressue device comprises axial compression bar 501, pressing plate 502, thrust bearing 503 and journal bearing 504, bearing gland 505 and Spring lock catch 506; Described axial compression bar 501 1 ends are fixedlyed connected with the hydraulic press master cylinder, the other end passes thrust bearing and is connected with the pressing plate rolling by bearing gland, nut with journal bearing, bearing gland is fixedly connected on the pressing plate, and the compression axis thrust bearing and the journal bearing that pass to compressor arm; Pressing plate is provided with the boss that passes pre-roughcast centre bore, has Spring lock catch on the boss; Described axial compression bar passes case lid 6, and described pressing plate is flexible connection with pre-roughcast.
Box-shaped rack 1 is an insulating box, and the insulating box bottom is provided with undersetting; Also be provided with high temperature oil, heater, temperature sensor in the described insulating box, described insulating box also is furnished with temperature regulating device (microcomputer temperature control instrument); Described heater places high temperature oil that high temperature oil is heated, and serviceability temperature sensor and temperature regulating device carry out Detection ﹠ Controling, the operating temperature range of described high temperature oil to the operating temperature of heating high temperature oil: room temperature~350 ℃.Described spinning roller device 3, core tumbler 4, plane pressue device 5 place in the insulating box, and power transmission shaft 401, drive bearing 402, a pair of helical gear 403,404, turning cylinder 405, rolling bearing 406 and rolling bearing gland 407 are loaded on undersetting.
The present invention uses example:
Choose magnesium alloy vehicle wheel, as shown in Figure 4, select Mg-Al-Zn be the AZ80 magnesium alloy as the wheel material, according to foregoing invention, the forming technology of wheel is as follows:
---homogenising is handled, jumping-up, and------------heat treatment---final machine adds---surface treatment is squeezed and revolved to heating---to the pre-roughcast of extruding preparation in heating in blanking.
1, blanking, homogenising processing, jumping-up and extruding base
Select to adopt the AZ80 magnesium alloy ingot of semi-continuous casting (or electromagnetic casting) moulding, behind the turning crust, band sawing machine blanking sawing becomes required bar, after the homogeneous heating processing, directly required extrusion billet is made in the jumping-up compression, the employing extrusion process is prepared into the pre-roughcast of magnesium alloy vehicle wheel tubular, as shown in Figure 5.
2, etc. warm extrusion revolves
Realize by the crowded cyclone of magnesium alloy vehicle wheel of the present invention that Deng warm extrusion lathe turner skill as shown in Figure 1, 2, squeezing-revolving shaping method is the pre-roughcast that adopts tubular; At first described pre-roughcast is placed on the core, use the plane pressue device that pre-roughcast is moved axially and carry out enlarging; Then, pre-roughcast is rotated with core, and move by having with the radial feed of the identical shaped rotation spinning roller of wheel outline along pre-roughcast, pre-roughcast squeezed revolve, make pre-roughcast produce continuous local plastic deformation diametrically, required magnesium alloy vehicle wheel outline finally is shaped.
This manufacturing process is finished in insulating box, and the temperature in the insulating box is controlled, and makes the temperature of pre-roughcast remain required extrusion temperature, thereby realizes the isothermal squeezing-revolving shaping of pre-roughcast.The temperature control that the present invention uses insulating box in the example is to be undertaken by the temperature of control heating high temperature oil in insulating box.The temperature heating and the control of insulating box also can be adopted alternate manner, as heating resistor, and various infrared emanation heating tubes etc.
The equipment that uses is 12500-3150-3150KN multiway shaping hydraulic press.Pre-roughcast is heated to 250~350 ℃ in electric furnace, the high temperature oil in the insulating box is heated to and the pre-identical temperature of roughcast.
Isothermal squeezing-revolving shaping process is as follows:
(1) the pre-roughcast that will be heated to assigned temperature places under the workpiece pressing plate by Spring lock catch, and hydraulic press master cylinder work is then depressed the axial compression bar to desired location, finishes enlarging and is shaped;
(2) starter motor makes the core rotation, the feeding of hydraulic press side direction cylinder, the spinning roller device work of two stations, by spinning roller radial loaded and feeding, make blank on thickness direction, press the outer contour shape distortion on spinning roller surface, to the pre-roughcast after the enlarging form, shaping, finally finish the squeezing-revolving shaping of wheel.
(3) after the backhaul of hydraulic press side direction cylinder, the backhaul of hydraulic press master cylinder drives the fixedly chuck translating sections rising of pre-roughcast, takes out workpiece.
3, subsequent treatment
To Mg-Al-Zn is that alloy A Z80 adopts single artificial aging to handle, and can obtain higher comprehensive mechanical performance.AZ80 Ageing Treatment standard: 177 ± 5 ℃ are incubated 16 hours, can satisfy the automotive wheel static strength.Carry out machining after the heat treatment, carry out surface treatment and application after the machined.

Claims (3)

1. a magnesium alloy vehicle wheel squeezing-revolving shaping device comprises frame (1) and core (2), and described frame is the box-shaped rack of (6) with cover, also has spinning roller device (3), core tumbler (4), plane pressue device (5) on box-shaped rack; Described core tumbler is loaded on the bottom of box-shaped rack, and core is loaded on core tumbler top; Described spinning roller device is loaded on the tank wall of box-shaped rack, and along the radial arrangement and the feeding of roughcast in advance; Described plane pressue device places above the pre-roughcast (7) on the core; It is characterized in that:
Described spinning roller device comprises the spinning roller identical shaped with the magnesium alloy vehicle wheel outline (301), spinning roller axle (302), spinning roller support (303), side direction connecting rod (304), spinning roller bearing (305), spinning roller bearing gland (306), axle sleeve (307) and spinning roller axle sleeve gland (308); Described side direction connecting rod passes axle sleeve, one end is fixedlyed connected with the spinning roller support, the other end stretches out box-shaped rack, spinning roller is fixedlyed connected by flat key with the spinning roller axle, the spinning roller axle is connected by the spinning roller bearing element with the spinning roller support, the spinning roller bearing gland is fixedly connected on the spinning roller support, and is pressed on the spinning roller bearing at spinning roller axle two ends; Side direction connecting rod and box-shaped rack rely on sleeve sealing;
Described core tumbler comprises power transmission shaft (401), drive bearing (402), large helical gear (403), bevel pinion (404), turning cylinder (405), rolling bearing (406) and drive bearing gland (407); Described power transmission shaft rolls with box-shaped rack by bearing and is connected, and power transmission shaft one end stretches out box-shaped rack, and the other end is fixedlyed connected with bevel pinion by key; Described turning cylinder rolls with the bottom of box-shaped rack by rolling bearing and is connected, and turning cylinder one end is fixedlyed connected with core by key, and the other end is fixedlyed connected with large helical gear by key; Turning cylinder passes the bottom of box-shaped rack and is provided with sealing ring (408), and described large and small helical gear is transmitted to turning cylinder with the moment of power transmission shaft input;
Described plane pressue device comprises axial compression bar (501), pressing plate (502), thrust bearing (503) and journal bearing (504), bearing gland (505) and Spring lock catch (506); Described axial compression bar (501) one ends are fixedlyed connected with the hydraulic press master cylinder, the other end passes thrust bearing and is connected with the pressing plate rolling by bearing gland, nut with journal bearing, bearing gland is fixedly connected on the pressing plate, and the compression axis thrust bearing and the journal bearing that pass to compressor arm; Pressing plate is provided with the boss that passes pre-roughcast centre bore, has Spring lock catch on the boss; Described axial compression bar passes the case lid of box-shaped rack, and described pressing plate is flexible connection with pre-roughcast.
2. according to the described a kind of magnesium alloy vehicle wheel squeezing-revolving shaping device of claim 1, it is characterized in that: described spinning roller device has two or three, when the spinning roller device has two, arranges along the radial symmetric of pre-roughcast; When the spinning roller device has three, along pre-roughcast radially and on circumference, be 120 ° of layouts.
3. according to the described a kind of magnesium alloy vehicle wheel squeezing-revolving shaping device of claim 1, it is characterized in that: described box-shaped rack (1) is an insulating box, and the insulating box bottom is provided with undersetting; Also be provided with high temperature oil, heater, temperature sensor in the described insulating box, described constant temperature fuel tank also is furnished with temperature regulating device; Described heater places high temperature oil and high temperature oil is heated, and serviceability temperature sensor and temperature regulating device carry out Detection ﹠ Controling to the operating temperature of heating high temperature oil.
CN2009100736724A 2009-01-19 2009-01-19 Squeezing-revolving shaping method of magnesium alloy wheel and device thereof CN101480670B (en)

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Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101912944B (en) * 2010-08-03 2012-07-25 燕山大学 Method for machining aluminum alloy hub
CN102632822A (en) * 2012-03-31 2012-08-15 北京华盛荣镁业科技有限公司 Passenger car seat frame, manufacturing method thereof and passenger car seat
CN103230951A (en) * 2013-04-22 2013-08-07 中北大学 Hot extrusion forming method of light alloy horn-shaped pipe fitting
CN103878199B (en) * 2014-01-14 2015-12-02 中北大学 A kind of rotary squeezing mould of homogeneous high Strengthening and Toughening magnesium alloy cup-shape member
CN104097029A (en) * 2014-06-16 2014-10-15 内蒙古华唐都瑞轮毂有限公司 Forging and rotating type short process technology
CN104942593A (en) * 2015-05-13 2015-09-30 西安交通大学 Belt wheel extrusion-spinning near-net forming device
CN105107915B (en) * 2015-09-14 2017-05-10 航天材料及工艺研究所 Technological method for precise spinning forming of large magnesium alloy thin-walled cylindrical part
CN105537450A (en) * 2016-01-11 2016-05-04 江苏政田重工股份有限公司 Hot extrusion type spinning process and device
CN106825272A (en) * 2016-12-26 2017-06-13 安庆迪力机械铸造有限公司 A kind of forklift hub expanding device
CN106734669A (en) * 2016-12-26 2017-05-31 安庆迪力机械铸造有限公司 A kind of forklift hub spinning enlarging device
CN109048226A (en) * 2018-09-07 2018-12-21 温州力邦企业有限公司 The preparation process of hub of motorcycle
CN109365658A (en) * 2018-11-20 2019-02-22 岳西县盛宏工贸有限责任公司 A kind of hot spinning expanding device

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Inventor after: Zhang Zhimin

Inventor after: Ma Chunsheng

Inventor after: Wang Qiang

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