CN102717236A

CN102717236A - Forming process for irregular section tubeless wheel rims

Info

Publication number: CN102717236A
Application number: CN2012102067721A
Authority: CN
Inventors: 李忠良
Original assignee: Shandong Better wheel Co Ltd
Current assignee: Shandong Better wheel Co Ltd
Priority date: 2012-06-21
Filing date: 2012-06-21
Publication date: 2012-10-10

Abstract

The invention relates to a forming process for irregular section tubeless wheel rims used on trucks and passenger cars. The technical scheme includes that the process includes the steps: (1), selecting materials, namely, selecting rolled irregular sections, wherein a rim of each rolled irregular section is a solid arc, the radius is R 12.7 millimeters, a position in 15 degrees of a bead seat of each rim is simultaneously rolled out during rolling, and the corresponding overall width and overall length are designed for the rest of the size according to different product models; (2), cutting the rolled irregular sections into the rolled irregular sections with required length according to the product models and the process dimension, and forming the cut irregular sections into a circle by the aid of edge rolling and welding in the prior art; and (3), rolling bottom kerfs of the rims out by a roll forming machine. The forming process for the irregular section tubeless wheel rims has the advantages that forming of the variable cross-section rims can be achieved, the overall strength of the rims is enhanced, running safety of vehicles is guaranteed, rolling shape and structure of the irregular sections are simple, and the rim forming procedure is less and simple and easy to operate by the irregular sections.

Description

A kind of irregular section inner tube-free wheel wheel rim forming technology

Technical field

The forming technology of the 15 degree bcad seats inner tube-free wheel wheel rims that the present invention relates to use on truck and the passenger vehicle; Especially relate to a kind of irregular section inner tube-free wheel wheel rim forming technology; Can manufacture the wheel rim of variable cross-section through this technology; The product of producing can improve the resistance to impact of rim, improves the bearing capacity of wheel simultaneously.

Background technology

At present, the employed inner tube-free wheel wheel rim of truck and passenger vehicle is all rolled up circle, welding, roll extrusion by Zhang Ping's plate and is processed, in the rolling forming operation; Want to realize the dimensional requirement in wheel rim cross section; To be shaped through enlarging, roll extrusion kerve, roll extrusion wheel rim and bcad seats is shaped, full-scale essence rolled forming process four times, material is flowing to different directions in four forming processes, realizes so the rim material that is shaped can only be limited to the steel plate of equal thickness; Each position thickness of the wheel rim of finally manufacturing is identical; Can't realize the production of variable cross-section wheel rim, very easily distortion is prone to cause tire to come off a little less than the wheel rim place intensity relative thin of the wheel rim of equal thickness.

Summary of the invention

Only limit to the production of equal thickness wheel rim for the forming technology that overcomes existing inner tube-free wheel wheel rim; The utility model provides a kind of irregular section inner tube-free wheel wheel rim forming technology; The wheel of this process forming can be according to the difference of each force part of wheel rim; Change the material thickness at each position, strengthen the thickness at stressed big position, guarantee that vehicle can not cause tire to come off because of the distortion of wheel in fully loaded going.

Technical scheme: accomplish: (one) selection: select rolling irregular section for use by following steps; Rolling irregular section wheel rim place is a Filled Arc; Radius is R12.7mm; Bcad seats 15 degree of wheel rim is in and shuts out simultaneously when rolling, and remaining size designs corresponding overall width and total length according to the difference of product type;

(2) volume circle, welding: the model according to product is cut into the length of requirement with rolling irregular section by process, and the material of having sheared forms a circle through volume circle of the prior art and welding;

(3) roll out the kerve position of wheel rim: the kerve position that rolls out wheel rim by roll forming machine.

Beneficial effect is: can realize the shaping of variable cross-section wheel rim, improve the bulk strength of wheel rim, guarantee the driving safety of vehicle, this material rolled form is simple in structure, and rolling mill practice is ripe, and the forming process of being carried out wheel rim by this section bar is few and simple to operation.

Description of drawings

Accompanying drawing 1 is the irregular section profile after rolling of the present invention;

Accompanying drawing 2 is the main forming technology flow charts of variable cross-section wheel rim;

Accompanying drawing 3 is the web wheel rim forming technology figure of Yuanping City.

The specific embodiment

With reference to accompanying drawing 1,2,Accomplish by following steps: (one) selection: select rolling irregular section 1 for use; Rolling irregular section 1 wheel rim place 2 is a Filled Arc; Radius is R12.7mm; The bcad seats 15 degree places 3 of wheel rim shut out when rolling simultaneously, and remaining size designs corresponding overall width and total length according to the difference of product type; (2) volume circle, welding: the model according to product is cut into the length of requirement with rolling irregular section by process, and the material of having sheared forms a circle through volume circle of the prior art and welding; (3) roll out the kerve position of wheel rim: the kerve position that rolls out wheel rim by roll forming machine.

Embodiment:

It is identical with current production devices that process is manufactured in shaping: 1. blanking: rolling irregular section 1 length is confirmed as 5160mm by the 3 multiple lengths cun termination surplus definite and that reservation is cut off of blanking size 1700mm, cuts into the long from one piece of 1700mm with the 160T mechanical punch wheel rim irregular section 1 that 5160mm is long; 2. volume circle: roll up circle with three roller furling plate round machine, what the used volume circle roller die profile of furling plate round machine will be with irregular section 1 is measure-alike, can not destroy the surface quality of workpiece in the round process of volume; 3. counterpart: the workpiece two ends behind the volume circle is not closed up, and uses the opening pressing of 160T mechanical punch installation mold with workpiece, and the arc radius of mould is 90% of the final radius of workpiece, realizes the pressing effect; 4. flatten: two ends and out-of-flatness after the pressing, use 160T mechanical punch installation mold that the two ends of workpiece is pressed into the plane so that the postorder welding requirements; 5. welding: with the two ends seam of flash butt welder with workpiece, this technology has been the industry maturation process.6. weld seam is scraped slag: the welding slag after using special-purpose wheel rim Slag Scraping Device with flash butt welding is disposed; 6. roll extrusion kerve: with the bottom land part of the special-purpose roll forming machine assembling of wheel rim mould roll extrusion wheel rim; The relative direction rotation simultaneously of the last lower shaft of roll forming machine; The required mould of assembling shaping on the axle, lower shaft moves up in the time of rotation, finally rolls out the shape of the need of technology by the size of mould; 7, expansion scale: assemble the downward pressure of dilatation mold through press with the 500T hydraulic press and transfer the motion of module to circumference through cone; The interior profile complete one of Module Design profile and workpiece to, the workpiece that rolls after the shape is expanded to the desired product size of standard; Device therefor uses equipment identical with wheel industry at present in the operation, is press fitted into and welding with spoke part after wheel rim is manufactured and accomplished, and is identical with present wheel industry current technology.

Claims

1. irregular section inner tube-free wheel wheel rim forming technology; It is characterized in that: accomplish: (one) selection: select rolling irregular section for use by following steps; Rolling irregular section wheel rim place is a Filled Arc; Radius is R12.7mm, and the bcad seats of wheel rim 15 degree are in and shut out simultaneously when rolling, and remaining size designs corresponding overall width and total length according to the difference of product type;