http://rdf.ncbi.nlm.nih.gov/pubchem/patent/TW-491011-B
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_9170808905b9a7479a578c24cfc470b2 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5a7bfccccf6c050fd2d018448d4d7d76 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H05K3-0047 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H05K1-0266 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B26D5-34 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B26F1-16 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H05K3-04 |
| filingDate | 2000-11-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2002-06-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_96de0abf094fbec5a0a2b6ba0fa24a65 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_76c8dd044f0c2f796b8978988635a15d |
| publicationDate | 2002-06-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | TW-491011-B |
| titleOfInvention | Reference hole borer and method of correcting feed position |
| abstract | The purpose of the present invention is to obtain the reference hole coordinates reflecting position errors of each of guide marks by observing three or more guide marks disposed on an inner layer of a multilayer printed wiring board. The solution is: in Fig. 6a the center of gravity Hg is obtained from the designed coordinates of reference holes H1-H4 (e.g. 4 holes) on PL2, regarding each reference hole as a unit mass point, and an UV coordinate system is formed with the origin at the center of gravity. Similarly, guide marks P1-P4 measured in an XmYm (mechanical) coordinate system fixed to a boring machine on a PL1 are also expressed with an XY coordinate system with the origin at its center of gravity Pg, the same as the reference holes, and the centers of gravity Hg, Pg are superposed one above the other. In Fig. B the distance L1 between corresponding guide mark P1 and reference hole H1 is defined and the angle Α is obtained at which the square sum Q of L1-L4 is minimum. With the U-axis inclined by Α, the coordinates of H1-H4 are transformed to the Xm, Ym mechanical coordinate system and holes are bored at these coordinates. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/TW-I608883-B |
| priorityDate | 2000-04-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 24.