US 12,325,059 B2
Process for manufacturing tubeless vehicle wheel made from a single piece input material
Shriram Vijayaraghavan, Chennai (IN); Sundararajan Thiyagarajan, Chennai (IN); Muthuraj Ramasamy, Chennai (IN); and Benhambu Kingston, Chennai (IN)
Appl. No. 17/261,684
Filed by WHEELS INDIA LIMITED, Chennai (IN)
PCT Filed Aug. 14, 2020, PCT No. PCT/IB2020/057660
§ 371(c)(1), (2) Date Jan. 20, 2021,
PCT Pub. No. WO2021/074707, PCT Pub. Date Apr. 22, 2021.
Claims priority of application No. 201941042042 (IN), filed on Oct. 17, 2019.
Prior Publication US 2022/0297178 A1, Sep. 22, 2022
Int. Cl. B21D 53/30 (2006.01); B21D 22/14 (2006.01); B60B 3/00 (2006.01); B60B 21/02 (2006.01); B60B 21/10 (2006.01)
CPC B21D 53/30 (2013.01) [B21D 22/14 (2013.01); B60B 3/00 (2013.01); B60B 21/023 (2013.01); B60B 21/102 (2013.01); B60B 21/104 (2013.01); B60B 2310/20 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A process for manufacturing tubeless vehicle wheel without welding comprising the steps of;
providing a hoop (100) made of metallic materials having an outboard end (101), a centre region (102) and an inboard end (103);
spinning the outboard end (101) of the hoop (100) to obtain a disc region (202);
spinning disc end (203) of the disc region (202) to obtain a preform nave region (301);
forming the disc region (202) to obtain a disc profile (401) and a nave region (403) and forming the centre region (102) and inboard end (103) of the hoop (100) to obtain a straight rim profile (402);
spinning and forming outer end (405) of the straight rim profile (402) to obtain an outboard flange (502a);
spinning the straight rim profile (402) to obtain a concave rim profile (601a) with a preform inboard flange (602a);
spinning the concave rim profile (601a) to obtain bead seats (701a) and a well region (703a);
forming the preform inboard flange (602a) to obtain an inboard flange (704a);
providing a plurality of vent holes (801a) at the disc profile (401a) and a valve hole (802a) at the bead seat (701a);
wherein the forming of the outboard flange (502a) and the inboard flange (704a) includes using a press forming process; and
wherein the disc profile (401), nave region (403) and the straight rim profile (402) obtained using a flow forming process.