FIELD: manufacture of printed-circuit boards. SUBSTANCE: before punching base holes maximum deviation of centers of images of mask contact pads from respective components of map graticule is measured, this procedure being followed by displacement of mask through half the measured value towards its decrease. Device for implementing this method has base 1 with punching unit having dies 2, detachable guide frame 3, and punches 4. Base mounts screen built up of transparent plates 5 and 6 with vacuum chamber 7 formed between them. Plate 5 has holes 9 and map graticule is applied to it. EFFECT: improved accuracy of location of base holes. 7 dwg
Title | Year | Author | Number |
---|---|---|---|
DEVICE FOR ALIGNING BENCH MARKS OF FILM MASK OF PRINTED CIRCUIT BOARD | 0 |
|
SU1102063A1 |
METHOD OF ADJUSTMENT OF CONTACT DEVICE FOR INSPECTION OF PRINTED CIRCUIT BOARDS | 0 |
|
SU1737771A1 |
0 |
|
SU457614A1 | |
APPARATUS FOR PUNCHING BASE HOLES | 0 |
|
SU1066052A1 |
PRINTED-CIRCUIT BOARD CHECKING DEVICE | 1990 |
|
RU2072120C1 |
PRINTED CIRCUIT BOARD TESTING DEVICE | 0 |
|
SU906042A1 |
CONTACT DEVICE FOR CHECKING PRINTED CIRCUIT BOARDS | 0 |
|
SU1100759A1 |
CONTACT DEVICE,PARTICULARLY,FOR EQUIPMENT FOR CHECKING THE WIRING CONNECTIONS OF PRINTED-CIRCUIT BOARDS | 0 |
|
SU1256246A1 |
METHOD OF MAKING MOUNTING HOLES IN PRINTED-CIRCUIT BOARDS | 0 |
|
SU849567A1 |
DEVICE FOR PUNCHING BASIC HOLES | 0 |
|
SU853836A1 |
Authors
Dates
1994-01-15—Published
1989-10-03—Filed