| 摘要 |
PURPOSE:To accurately and rapidly recognize the positions of leads by calculating the positions of the all leads after contraction with the all preset reference lead positions and two specific lead positions after the leads are contracted. CONSTITUTION:Lead position coordinates before a ceramic base 1 is baked are set as reference leads by a setter 2, and stored in a memory 3. The base 1 is placed on an X-Y table 4, and the position coordinates of two specific leads disposed at suitable distance formed on the base 1 are detected by the cooperation of the table and an ITV camera 5. The detected coordinates are inputted to the memory 3. An arithmetic unit 6 calculates the prescribe calculation on the basis of the data stored in the memory 3, and calculates the lead positions after the desired leads are contracted. |
