Invention Grant
- Patent Title: Method for verifying scan precision of a laser measurement machine
- Patent Title (中): 验证激光测量机扫描精度的方法
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Application No.: US11308428Application Date: 2006-03-24
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Publication No.: US07397551B2Publication Date: 2008-07-08
- Inventor: Ling-Hua Que , Zhong-Kui Yuan , Wei Xu , Xiao-Bo Xin , Kuei-Yang Lin
- Applicant: Ling-Hua Que , Zhong-Kui Yuan , Wei Xu , Xiao-Bo Xin , Kuei-Yang Lin
- Applicant Address: CN Longhua Town, Bao'an District, Shenzhen, Guangdong Province TW Tu-Cheng, Taipei Hsien
- Assignee: Hong Fu Jin Precision Industry (Shen Zhen) Co., Ltd.,Hon Hai Precision Industry Co., Ltd.
- Current Assignee: Hong Fu Jin Precision Industry (Shen Zhen) Co., Ltd.,Hon Hai Precision Industry Co., Ltd.
- Current Assignee Address: CN Longhua Town, Bao'an District, Shenzhen, Guangdong Province TW Tu-Cheng, Taipei Hsien
- Agent Winston Hsu
- Priority: CN200510033855 20050325
- Main IPC: G01N21/00
- IPC: G01N21/00
Abstract:
A method for verifying scan precision of a laser measurement machine includes the steps of: preparing a standardized BGA model; measuring Z coordinates values of each solder ball peak of the BGA model for certain times; determining a Z coordinates conventional true value of each solder ball peak; measuring X, Y coordinates values of each solder ball centre of the BGA model; determining a coplanarity conventional true value of a seating-plane; determining an optimum scanning mode; determining optimum scanning parameters under the optimum scanning mode; scanning the BGA model under the optimum scanning parameters and the optimum scanning mode; obtaining X, Y, Z coordinates values of each solder ball peak; evaluating the veracity of Z coordinates of each solder ball peak; evaluating the veracity and repetitiveness of coplanarity; and evaluating scan precision of the laser measurement machine.
Public/Granted literature
- US20060215150A1 METHOD FOR VERIFYING SCAN PRECISION OF A LASER MEASUREMENT MACHINE Public/Granted day:2006-09-28
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