US 12,168,604 B2
Micro-nano incremental mechanical surface treatment method
Hongyu Wei, Nanjing (CN); Laishui Zhou, Nanjing (CN); Huiliang Zhang, Nanjing (CN); Ghulam Hussain, Nanjing (CN); Wanlin Zhou, Nanjing (CN); Haiji Chen, Nanjing (CN); Xiao Zhang, Nanjing (CN); and Lili Dong, Nanjing (CN)
Assigned to NANJING UNIVERSITY OF AERONAUTICS AND ASTRONAUTICS, Nanjing (CN)
Appl. No. 17/419,818
Filed by NANJING UNIVERSITY OF AERONAUTICS AND ASTRONAUTICS, Nanjing (CN)
PCT Filed Jul. 1, 2020, PCT No. PCT/CN2020/099667
§ 371(c)(1), (2) Date Jun. 30, 2021,
PCT Pub. No. WO2021/077795, PCT Pub. Date Apr. 29, 2021.
Claims priority of application No. 201911392006.7 (CN), filed on Dec. 30, 2019.
Prior Publication US 2022/0063992 A1, Mar. 3, 2022
Int. Cl. B81C 1/00 (2006.01)
CPC B81C 1/0046 (2013.01) [B81C 1/00023 (2013.01); B81C 1/00642 (2013.01); B81C 2201/0102 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A micro-nano incremental mechanical surface treatment method, comprising the following steps:
(1) using an end of a modification tool to contact a surface of a substrate material, and presetting moving parameters of the modification tool by means of 3D modeling software;
(2) rotating the modification tool in a local region of the surface of the substrate material, and moving the modification tool according to preset moving parameters in step (1) to compress the surface of the substrate material;
(3) after the modification tool has processed the entire surface of the substrate material, enabling the modification tool to move downwards to the indented surface compressed previously; and
(4) repeating step (2) and step (3) until the substrate material is compressed to a preset thickness:
wherein the moving parameters in step (1) comprise a moving path, a tool rotating speed, a feeding speed, a single-layer downward compressing amount, a processing pass and a secondary feeding overlapping rate;
wherein the moving path is a unidirectional, a reciprocating, a lattice, or a spiral, the tool rotating speed is in a range of 1000 rpm to 30000 rpm, the feeding speed is in a range of 1000 mm/min to 6000 mm/min, the single-layer downward compressing amount is in a range of 0.01 mm to 0.1 mm, the processing pass is in a range of 10 times to 30 times, and the secondary feeding overlapping rate is in a range of 2% to 10%.