FABRICATING A ONE_PIECE METAL VEHICLE WHEEL BY HYDRO FORMING METHOD

Abstract

Hydro forming method for constructing a piece of vehicle wheel rims. The whole process will be implemented in seven stages. As the first station of raw sheet by the form Stretch a piece of cylindrical internal diameter sized the smallest inner diameter and the 1.6 height rim and this diameter is larger than the outer rim diameter. Secondly outer rim diameter cylindrical piece is the desired size trim. In the third and main stage action takes place hydro forming cylindrical piece by piece into a specific form of work (work piece) with no Punches final form and elasticity are required.

Claims

1. Fabricating a one-piece metal vehicle wheel by hydro forming method, comprising steps of: A die is mounted on a stretch hydraulic press; wherein an upper part of said die includes a rod comprising a hole in center, mounted to a login fluid work piece; wherein an amount of fluid entering into said work piece is determined by a separate hydraulic unit; wherein said fluid is directed inside said work piece via a one-way valve; a lower part of said die includes a matrix taking a final form of a flange (disc or hub) by pressure of said fluid; a plate holder having jaws are installed on an ejector pins, surrounding said matrix, wherein said jaws move downwards and slide on said plate holder via two hydraulic jacks; wherein said ejector pins are placed in said holding plate parallel to an edge of said work piece; said fluid simultaneously enters into said work piece overflowing it, then simultaneously an upper jack press moves downward on said upper part of said die; since said work-piece is fixed on said matrix, said work-piece fluid pressure is compressed, as a result, said fluid pressure causes a uniform removal of said die; where an entire process takes 8 seconds to complete.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0037] FIG. 1 is an isometric view and a plan view of the Primary piece For Production vehicle wheel that is drawn the Cylindrical.

[0038] FIG. 2 is an isometric view and a plan view of the cylindrical piece that the edge of diameter is trim.

[0039] FIG. 3 is an isometric view and a plan view of the vehicle wheel produced by the main process (hydro forming), that double-edged rim is shown.

[0040] FIG. 4 is an isometric view and a plan view of the vehicle wheel in addition Punch Valve hole.

[0041] FIG. 5 is an isometric view and a plan view of the vehicle wheel in addition Punch air holes.

[0042] FIG. 6 is an isometric view and a plan view of the vehicle wheel in addition Punch preservatives and center holes.

[0043] FIG. 7 is an isometric view and a plan view of the complete vehicle wheel by hydro forming method.

[0044] FIG. 8 is an isometric view and a plan view of the Open mode die, so work-piece is within the die for formation.

[0045] FIG. 9 is an isometric view and a plan view of the action mode die.

[0046] FIG. 10 is an isometric view and a plan view of the final action mode die.

[0047] FIG. 11 is an isometric view and a plan view of the final (open) mode die, so the vehicle wheel is final form.

[0048] FIG. 12 are Number of samples produced with this method, Included some examples of vehicle wheel and pulley.

LIST OF PARTS

[0049] 1Double edge [0050] 2Valve hole [0051] 3Air holes [0052] 4Preservatives holes [0053] 5Central hole [0054] 6Rod [0055] 7The fluid path [0056] 8Work piece [0057] 9Matrix [0058] 10Plate holder [0059] 11Jaws [0060] 12Ejector pins [0061] 13Hydraulic jacks

DETAILED DESCRIPTION OF THE

[0062] 1First, Initial Blanc is drawn to the size 1.3-1.6 of rim height according to the type and size of (vehicle wheel) and select initial blank, So that the diameter edges is larger for trim to the next stage (FIG.1).

[0063] 2Second, at this stage the diameter of the edge pieces first trim is (it is not uniform due to stretching process), due to the size bending radius of the outer edge of the rim diameter (FIG. 2).

[0064] 3At this stage that is the main stage and in fact Is technique invented, it done forming a piece by Hydro-forming method (FIG. 3). The die is mounted on a stretch hydraulic press. According to (FIG. 8) the upper part of the die includes rod 6 that it's a hole 7 in center is mounted to login fluid work piece 8. So that the fluid enters into the work piece being in terms of the amount is determined by a separate hydraulic unit, and then way back is located by a one-way valve that is the way. Next the operation will be explained, the fluid in the work piece has been removed from Parallel to the direction that it is a pressure valve (mechanical or electrical).

[0065] The below part of the die includes a matrix 9 that the final form of the flange (disc or hub) takes the form by fluid pressure. Plate holder 10 jaws 11 of die are installed on the ejector pins and they are surrounding matrix, that action format with downward moving jaws, Jaws die that are the sliding on the Plate holder that open and close by two hydraulic jacks 13 and the final form of rim will be finalized at wall of the jaws when the format operation by the fluid pressure. It is explained that the primary die for Prototype production we used instead of using hydraulic jacks Parties jaws of a mechanical arm and a ring of inhibitor Jaws closed during operation and at this stage we used hydraulic jacks for improving the efficiency.

[0066] Now according to a brief introduction, we will explain the mechanism. First must the course machine Jack down be set to the extent that ejector pins are placed in the holding plate parallel to the edge of the work-piece (FIG. 8), then start working the jaws closed into by hydraulic jacks both sides simultaneously. Fluid are simultaneously enters into the work piece so that work piece the overflow of fluid and then fluid flow as noted cuts by a valve that a path embedded and the fluid can back from parallel path that there is a pressure valve in the path, and simultaneously upper Jack Press moves downward the top part of the die (rod).

[0067] Involvement rod die with work piece beginning edge piece takes the form between the rod and the edge Jaws die and then continue to operate in the die whit resistance Jack down and the pressure valve (Adjusted as necessary to resist) against pressure of the upper machine jack. It is causing a lot of conflict between the rod and the work piece that this action sealing is caused between the work piece and the jaws, as a result, sealing will not allow the fluid to be removed and the continued dominance of pressure of the upper machine jack on the pressure button machine jack. Causes start moving jaws and plate holder jaws to down.

[0068] Since the work-piece is fixed on the matrix, work-piece fluid Pressure is compressed, as a result, this fluid pressure cause the work-piece is guided to the empty part of the die (The jaws and matrix forms) uniformly. More operation with the steady increase of pressure excess fluid on the press the end of the course and at the end of the operation the work-piece formation, rod is absolutely final forms work-piece on the matrix and all fluid on the work piece is removed from the pressure valve (FIG. 10) and at this time pressure switch command to return all die and machine parts to original position, for the next act (FIG. 11).

[0069] Therefore work-piece with the final 14 form is removed from the die and the die is ready for the next operation (FIG. 11). Thus, the one piece steel vehicle wheel whit a double edge 1 (FIG. 7) production is very strong. Whole process and the mechanisms it takes for 8 seconds. It is explanation the select type hydraulic press it depends on the type and size of the vehicle wheel and for vehicle wheel sizes 13 to 15 is appropriate hydraulic Press 800T.

[0070] According to FIG. 3 all the necessary forms created by fluid pressure also the fluidity is caused complete uniformity the whole process of stretch and forming and cause produce pieces whit high quality and on the other it will has unbalance lowest. Created a double edge on the rim and one piece with hub (disk) and remove unstable welding process is causes strength the pieces and according to the type of process It is clear that can be easily produced types of vehicle wheel with any type of model, geometry and offset.

[0071] 4In the fourth step, valve hole 2 is punched through a simple process Press and same hole use for reference to create vehicle wheel and retainer and air holes

[0072] 5In the fifth step, get references from the valve hole, air hole 3 punch and the edges of the form given (FIG. 5).

[0073] 6At this stage, mounting holes 4 and the center hole 5 in the vehicle wheel punching and forming (FIG. 6). It is necessary to explain the sensitivity and carefully in the punch holes is important due to the symmetry central and axial with rim.

[0074] 7At this stage, forming operation takes place on retainer holes (FIG. 7).

It is explained in the case is used of sheet material st12 or similar device to generate, we are need to coating the piece but if we use the stainless steel sheet material coverage is not required and the final piece is quality and shape super because has been removed all the technical weaknesses and apparent caused two pieces and welding the new product. work piece is removed from the pressure valve path.