POPULATION OF PRINTED CIRCUIT BOARDS
First Claim
1. A method for populating printed circuit boards by means of a pick-and-place line, at which a set up is made available;
- wherein a set-up family that comprises a plurality of printed circuit board types is associated with the set-up,wherein component types are associated with the set up, so that a printed circuit board of a printed circuit board type of a set-up family can be populated by means of components of the component types of the set-up;
wherein a first planning period is specified, and is divided into a plurality of second planning periods;
wherein each set-up can be implemented at one or a plurality of setting-up tables through the provision of stocks of the components of the associated component types;
wherein the set-ups are divided into fixed set-ups and variant set-ups,wherein a fixed set-up is configured to remain implemented unchanged on one or a plurality of setting-up tables during the first planning period,and a variant set-up is configured to be implemented only temporarily at the one or a plurality of setting-up tables during a second planning period, the method comprising;
a) registering orders, each for populating a piece count of the printed circuit boards of the printed circuit board type with the components associated with the component types in a predetermined second planning period;
b) associating the component types with the fixed set-ups on the basis of all orders;
c) optimizing the association with reference to a maximization of a weighted combination of a production volume and a number of orders;
d) for each second planning period;
associating the component types with the variant set-ups on the basis of orders of the respective second planning period;
determining a sequence in which the fixed set-ups or the variant set-ups should be set up at the pick-and-place line in order in each case to process the order;
e) determining a criterion that comprises the qualities of the determined sequences of all the second planning periods;
f) repeating steps b.) to e.) with a changed weighting of the combination;
g) determining an optimized weighting at which the criterion is optimized; and
h) populating the printed circuit boards by means of the set-up that has been determined on the basis of the optimized weighting.
1 Assignment
0 Petitions
Accused Products
Abstract
Populating printed circuit boards with components on a pick-and-place variant set-up is provided. Each set-up includes a number of components, stocks of which are brought to setting-up tables on the pick-and-place line, and a set-up family is associated with each set-up, the family system, a fixed set-up and multiple printed circuit board types which can be populated using the set-up. The fixed set-up is optimized with respect to a weighted parameter, before determining, by means of a simulation, how well variant set-ups, with which the remaining components of predefined pick-and-place orders are associated, can be implemented on the setting-up tables and brought to the pick-and-place line. The quality of each different weighting is determined in order to determine an optimized weighting.
8 Citations
13 Claims
-
1. A method for populating printed circuit boards by means of a pick-and-place line, at which a set up is made available;
-
wherein a set-up family that comprises a plurality of printed circuit board types is associated with the set-up, wherein component types are associated with the set up, so that a printed circuit board of a printed circuit board type of a set-up family can be populated by means of components of the component types of the set-up; wherein a first planning period is specified, and is divided into a plurality of second planning periods; wherein each set-up can be implemented at one or a plurality of setting-up tables through the provision of stocks of the components of the associated component types; wherein the set-ups are divided into fixed set-ups and variant set-ups, wherein a fixed set-up is configured to remain implemented unchanged on one or a plurality of setting-up tables during the first planning period, and a variant set-up is configured to be implemented only temporarily at the one or a plurality of setting-up tables during a second planning period, the method comprising; a) registering orders, each for populating a piece count of the printed circuit boards of the printed circuit board type with the components associated with the component types in a predetermined second planning period; b) associating the component types with the fixed set-ups on the basis of all orders; c) optimizing the association with reference to a maximization of a weighted combination of a production volume and a number of orders; d) for each second planning period; associating the component types with the variant set-ups on the basis of orders of the respective second planning period; determining a sequence in which the fixed set-ups or the variant set-ups should be set up at the pick-and-place line in order in each case to process the order; e) determining a criterion that comprises the qualities of the determined sequences of all the second planning periods; f) repeating steps b.) to e.) with a changed weighting of the combination; g) determining an optimized weighting at which the criterion is optimized; and h) populating the printed circuit boards by means of the set-up that has been determined on the basis of the optimized weighting. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
Specification