US 11,869,180 B1
Measurement method and system of undeformed chip thickness in micro-milling
Tongshun Liu, Suzhou (CN); Kedong Zhang, Suzhou (CN); Chengdong Wang, Yihuai (CN); and Xuhong Guo, Suzhou (CN)
Assigned to SOOCHOW UNIVERSITY, Suzhou (CN)
Appl. No. 18/032,445
Filed by SOOCHOW UNIVERSITY, Suzhou (CN)
PCT Filed Jul. 12, 2022, PCT No. PCT/CN2022/105062
§ 371(c)(1), (2) Date May 11, 2023,
PCT Pub. No. WO2023/077856, PCT Pub. Date May 11, 2023.
Claims priority of application No. 202111306045.8 (CN), filed on Nov. 5, 2021.
Int. Cl. G06T 7/00 (2017.01); G06T 7/62 (2017.01)
CPC G06T 7/0004 (2013.01) [G06T 7/62 (2017.01); G06T 2207/10056 (2013.01); G06T 2207/30136 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A measurement method of undeformed chip thickness in micro-milling, comprising the steps of:
S1: acquiring a surface topography picture of the bottom of a flute after micro-milling;
S2: extracting a tool mark at the central line of the flute from the surface topography picture;
S3: calculating a spacing distance between adjacent tool marks and calculating the difference of equivalent cutting radius between adjacent cutter teeth based on the spacing distance between adjacent tool marks; and
S4: reconstructing the instant undeformed chip thickness in micro-milling based on the difference of equivalent cutting radius between adjacent cutter teeth.