公开(公告)号：US09835449B2

公开(公告)日：2017-12-05

申请号：US14934607

申请日：2015-11-06

Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

Inventor： Chia-Hung Cho ,  Kai-Ping Chuang ,  Ming-Cheng Tsai

IPC: G01B11/30 ,  G01B21/04

CPC classification number: G01B11/303 ,  G01B21/04

Abstract: A surface measuring device includes a rotary platform, a shifting lever, a measuring module, and a control module. The rotary platform carries an object under test and rotates the object under test at a rotating speed. The shifting lever is above the rotary platform. The measuring module disposed on the shifting lever moves to measurement positions on the shifting lever and performs a surface height measurement at a sampling frequency to sampling points on a surface of the object under test when located at one measurement position. The control module selectively adjusts the rotational speed for the rotary platform or the sampling frequency for the measuring module according to the measurement position of the measuring module on the shifting lever in order to fit a distance between the sampling points on at least one part of the surface of the object under test to a sampling rule.

公开(公告)号：US11846932B2

公开(公告)日：2023-12-19

申请号：US16727662

申请日：2019-12-26

Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

Inventor： Yi-Ping Huang ,  Hsuan-Yu Huang ,  Shu-Hui Yang ,  Po-Nien Tsou ,  Ming-Cheng Tsai ,  Chen-Kun Tsung

IPC: G05B19/418

CPC classification number: G05B19/41865 ,  G05B2219/35228 ,  G05B2219/37617

Abstract: A part processing planning method includes the following steps. Firstly, a specific tolerance of a nominal size of a part is obtained. Then, a predetermined tolerance of each of processes is obtained. Then, using a process dimension chain establishing technique, at least one predetermined tolerance associated with the specification tolerance from the predetermined tolerances is obtained. Then, at least one predetermined tolerance associated with the specification tolerance is accumulated to obtain a size cumulative tolerance. Then, whether the size cumulative tolerance meets the specification tolerance is determined. Then, at least one predetermined tolerance associated with the specification tolerance is re-allocated when the cumulative tolerance does not meet the specification tolerance, such that the size cumulative tolerance is within the specification tolerance.

公开(公告)号：US10260870B2

公开(公告)日：2019-04-16

申请号：US15855794

申请日：2017-12-27

Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

Inventor： Po-Huang Shieh ,  Po-Nien Tsou ,  Wei-Chieh Chang ,  Ming-Cheng Tsai

IPC: G01B11/24 ,  G01B11/25 ,  G01B11/02

Abstract: An on-line measuring system, a datum calibrating method, a deviation measuring method and a computer-readable medium are provided. The datum calibrating method includes following steps. A work piece is scanned by a scanning unit to obtain a global point cloud data. A local CAD data of the work piece is obtained according to a predetermined range. A local CAD geometric feature of the local CAD data is obtained. A local point cloud data of the global point cloud data is obtained according to a local range corresponding to the predetermined range. A local scanning geometric feature of the local point cloud data is obtained. The local scanning geometric feature and the local CAD geometric feature are compared to obtain at least one spatial freedom limit. A system basis is obtained according to six spatial freedom limits, if the number of the at least one spatial freedom limit reaches six.