CN100528396C

CN100528396C - Rotary pressing edge forming method of the vehicle circular rim and the circular rim with an integrated structure

Info

Publication number: CN100528396C
Application number: CNB2007100927332A
Authority: CN
Inventors: 朱钢; 朱德华
Original assignee: ZHU GANG ZHU DEHUA
Current assignee: ZHU GANG ZHU DEHUA
Priority date: 2007-09-21
Filing date: 2007-09-21
Publication date: 2009-08-19
Anticipated expiration: 2027-09-21
Also published as: CN101134216A

Abstract

The spinning and hemming process for forming vehicle wheel rim features that the circular plate material is spun and hemmed radially and inwards in one spinning machine to form the wheel rim while the central part of the circular plate material is reserved and machined into the spokes. The technological process without welding is simple and low in cost, and the formed wheel rim has high concentricity, high dynamic balance performance, no weld seam caused leakage, integrality with the spokes, high strength and other advantages.

Description

The spinning of vehicle rim divides the wheel rim of edge forming method and integrative-structure

Technical field

The present invention relates to make the processing technology of vehicle wheel rims such as automobile, motorcycle, be specifically related to the make wheels spinning branch limit method of wheel rim of sheet metals such as almag.Belong to machinery manufacturing technology field.

Background technology

Vehicle rim is to install and the fixing basis of tire.Traditional vehicle rim normally adopts with aluminum alloy materials and forges or the casting method moulding, or forms through spinning process again.But except that the casting method one-shot forming be structure as a whole, the method that forms with sheet metal spinning is: be generally half wheel rim dish that two aluminum alloy plate materials spinning form through being welded.Adopt welding procedure to make that not only manufacturing procedure is many, also have the following disadvantages: 1, manufacturing process complexity especially to the having relatively high expectations of solder technology, otherwise is difficult to guarantee concentricity preferably and influences the dynamic balancing of wheel rim.2, need to use more expensive gas shielded welding machine and the welding procedure of price, must increase manufacturing cost.3, the sealing requirements height of soldered has a flat tire otherwise cause easily.For example existing drop center rim as shown in Figure 1, its processing method: form half wheel rim dish 11 of two troughs of belt with almag sheet material or steel plate through punching press, spinning, form spoke 12 through welding after 11 butt joints of two halves wheel rim dish; Among the figure, 10 is weld seam (circle).Having relatively high expectations of this structure butt welded seam will guarantee that at first two halves wheel rim dish 11 has good concentricity, and require weld seam good airproof performance and intensity height, also needs aesthetic property preferably simultaneously, but is difficult in the reality hold.And the wheel rim of casting method moulding, though main body can be structure as a whole, the back manufacturing procedure is comparatively complicated.

Summary of the invention

At the prior art above shortcomings, the object of the present invention is to provide a kind of the needs to weld, and the simple vehicle rim spinning of processing technology divide edge forming method; Another object of the present invention provides the wheel rim of the integrative-structure of according to said method making, need not weld.

The object of the present invention is achieved like this: the spinning of vehicle rim divides edge forming method, it is characterized in that adopting sheet material, radially carries out spinning branch limit with spinning machine from outside to inside from the sheet material thickness direction, and keeping circular sheet material center circle is spoke.Specifically comprise the steps:

A, blanking: prepare sheet material according to wheel rim dish or rim spoke wall thickness, blanking is that circular its sheet material diameter is determined according to the height and the shape of wheel rim dish;

B, branch limit: radially carry out spinning branch limit with spinning machine from outside to inside from the sheet material thickness direction, circular sheet material center circle is a spoke; Divide the position, limit to determine according to the two wheel rim dish materials amounts on minute limit;

C, rotary press modelling: with the spoke is that the center is carried out spinning to the wheel disc on minute limit to both sides respectively with spinning machine (and mould), until the moulding of finishing single-piece rim;

D, form through bevelling, polishing and drilling operating.

Compared to existing technology, the present invention has following advantage:

1, the inventive method technology is simple, does not need complicated solder technology, has also saved expensive gas shielded welding machine; Can obviously reduce manufacturing cost.

2, owing to adopt one-shaping technique, can guarantee that the concentricity of wheel rim is in full accord, thereby guarantee that the product dynamic balancing is unaffected; And, avoided weld seam to produce the problem of gas leakage fully.

3, wheel rim dish and the spoke made of the inventive method is overall structure, and be simple in structure, the concentricity height, and intensity is better, and more attractive in appearance.

Description of drawings

Fig. 1 is existing a kind of rim structure schematic diagram;

Fig. 2 is a kind of rim structure schematic diagram that the inventive method is made;

Fig. 3 is this bright method process flow diagram.

The specific embodiment

The invention will be further described below in conjunction with the drawings and specific embodiments.

Referring to Fig. 3, the spinning of vehicle rim divides edge forming method, comprises the steps:

A, blanking: preparing thickness is the circular sheet material 6 of 8mm, its sheet material diameter 300mm;

B, branch limit: sheet material 6 is fixed on the rotating shaft 3 of spinning machine, the shape of dividing first wheel disc 1.1 behind the limit and second wheel disc 1.2 as required and materials difference different with the degree of depth, as being that cutter 4 radially carries out spinning branch limit from outside to inside with the spinning wheel of spinning machine from sheet metal thickness 2/3 (another side 1/3), keep the spoke 2 that circular sheet material center is diameter 17mm, the thickness of spoke 2 is 8mm;

C, rotary press modelling: being the center with spoke 2 carries out spinning to both sides respectively with the spinning mould 5 and the spinning wheel 4 of spinning machine, (sheet material 1/3 webbing) is that wheel disc 1.1 and (sheet material 2/3 webbing) are wheel disc 1.2, is the even single-piece rim of 4mm until the thickness that forms first wheel disc 1.1 and second wheel disc 1.2;

D, processing: form through bevelling, polishing and boring operations such as (installing hole and air nozzle holes).

The used sheet material of the present invention can be selected the sheet material of multiple materials such as almag, aluminium alloy, iron or steel for use.

As shown in Figure 2, the drop center rim of the integrative-structure of making according to the method described above, it is made of spoke 2 and first wheel disc 1.1 and second wheel disc 1.2 of being located at spoke 2 both sides, and first wheel disc 1.1 and second wheel disc 1.2 and spoke 2 are in one, form by sheet material spinning, do not need welding.The shape of wheel disc 1.1 and wheel disc 1.2 and the degree of depth can be identical also can be different, can symmetry or asymmetricly all determine according to minute position, limit and spinning mould.

Can process various difform wheel rims by technology of the present invention, its method is simple, does not need complicated solder technology, has also saved expensive gas shielded welding machine; Can obviously reduce manufacturing cost.The concentricity that has also guaranteed wheel rim is in full accord, thereby has guaranteed that the product dynamic balancing is unaffected; And, avoided weld seam to produce the problem of gas leakage fully.The inventive method is suitable for various sheet material machine-shapings, makes the integrative-structure wheel rim that is used for automobile, beach buggy and kart as almag, aluminium alloy, iron or steel plate etc.

Claims

1, the spinning of vehicle rim divides edge forming method, it is characterized in that, adopts circular sheet material, radially carries out spinning branch limit with spinning machine from outside to inside from the sheet material thickness direction, and keeping circular sheet material center circle is spoke; Specifically comprise the steps:

A, blanking: prepare circular sheet material according to the wall thickness of wheel rim or spoke, its sheet material diameter is determined according to the height and the shape of wheel rim dish;

B, branch limit: radially carry out spinning branch limit with spinning machine from outside to inside from the sheet material thickness direction, keeping circular sheet material center circle is spoke; Divide the position, limit to determine according to the two wheel rim dish materials amounts on minute limit;

C, rotary press modelling: with the spoke is that the center is carried out spinning to the wheel disc on minute limit to both sides respectively with spinning machine, until the moulding of finishing single-piece rim;

D, form vehicle rim through bevelling, polishing and drilling operating;

Described vehicle rim is by spoke (2) and be located at first wheel disc (1.1) of spoke (2) both sides and second wheel disc (1.2) constitutes, and first wheel disc (1.1) and second wheel disc (1.2) and spoke (2) are connected as a single entity;

Wherein, in the blanking of steps A, the thickness of described circular sheet material is 8mm, its sheet material diameter 300mm;

The branch limit of step B: from the spinning wheel of sheet metal thickness 2/3 usefulness spinning machine is that cutter radially carries out spinning branch limit from outside to inside, and keeping circular sheet material center is the spoke of diameter 17mm, and the thickness of spoke is 8mm;

The rotary press modelling of step C: being the center with the spoke carries out spinning to both sides respectively with the spinning mould and the spinning wheel of spinning machine, and formation is connected as a single entity, and thickness is first wheel disc and the second wheel disc single-piece rim of 4mm;

Described sheet material is almag plate, aluminium alloy plate, iron plate or steel plate.