US 12,416,331 B2
Three-dimensional parallel-triangular-shaped groove array surface for bearing and fabricating method thereof
Cheng Long Liu, Shandong (CN); Feng Guo, Shandong (CN); Bin Ju, Shandong (CN); Xin Ming Li, Shandong (CN); Qing Hua Bai, Shandong (CN); and Shu Yi Li, Shandong (CN)
Assigned to QINGDAO UNIVERSITY OF TECHNOLOGY, Shandong (CN)
Appl. No. 18/245,914
Filed by Qingdao University of Technology, Shandong (CN)
PCT Filed May 18, 2022, PCT No. PCT/CN2022/093605
§ 371(c)(1), (2) Date Mar. 20, 2023,
PCT Pub. No. WO2023/097987, PCT Pub. Date Jun. 8, 2023.
Claims priority of application No. 202111450909.3 (CN), filed on Dec. 1, 2021.
Prior Publication US 2024/0352972 A1, Oct. 24, 2024
Int. Cl. F16C 33/58 (2006.01); B23K 26/364 (2014.01); F16C 33/64 (2006.01); F16C 33/66 (2006.01)
CPC F16C 33/585 (2013.01) [B23K 26/364 (2015.10); F16C 33/64 (2013.01); F16C 33/66 (2013.01); F16C 2208/32 (2013.01); F16C 2223/30 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A three-dimensional parallel-triangular-shaped groove array for a bearing, comprising
a parallel-triangular-shaped groove array and
an oleophobic layer, and
an oleophilic region
wherein the oleophobic layer is arranged on a surface of the parallel-triangular-shaped groove array, each groove of the parallel-triangular-shaped groove array is of a parallel-triangular-shaped structure, a depth of the groove changes from 0.2 to 2.5 μm from a tooth bottom to a tooth top, a single comb tooth has a tip angle of 30°, a length of 1 mm and a width of 150 μm, the oleophobic layer is a PTFE film with a thickness of 30 μm.
 
7. A bearing with a three-dimensional parallel-triangular-shaped groove array comprising, a parallel-triangular groove array and
an oleophobic layer, and
an oleophilic region
wherein the oleophobic layer is arranged on a surface of the parallel-triangular-shaped groove array, each groove of the parallel-triangular-shaped groove array is of a parallel-triangular-shaped structure, a depth of the groove changes from 0.2 to 2.5 μm from a tooth bottom to a tooth top, a single comb tooth has a tip angle of 30°, a length of 1 mm and a width of 150 μm, the oleophobic layer is a PTFE film with a thickness of 30 μm;
wherein when the surface is applied to at least one bearing, tips of the parallel triangular point to a center of a bearing raceway and are distributed uniformly along a center of the bearing raceway.