Donner Company

Donner CompanyDonner Company

Raw Materials

Preparation

Image transfer

Fabrication

Information

Process Flow DiagramProcess Flow Diagram

Artwork Generation Inspect & Shear

Punch Tooling Holes

WIP

Manual Drill CNC Drill

Metallization

DFPR

WIP

Electroplate

Strip DFPR

Etch and tin strip

Solder mask

Punch Press CNC Router

Solder Dip

Inspect, Test Pack

Issues Faced by Edward PlummerIssues Faced by Edward Plummer Late Delivery by 9 daysLate Delivery by 9 days Return of boards 3% of which 90% were due Return of boards 3% of which 90% were due

to improper process completionto improper process completion ¼ orders interrupted because of client calls¼ orders interrupted because of client calls Poor inspectionPoor inspection

Order size on CNC drillOrder size on CNC drill

Order size = (240-15)/(.08*500-.004*500)Order size = (240-15)/(.08*500-.004*500)

= 6= 6

On CNC router = (150-50)/.5On CNC router = (150-50)/.5

= 200= 200

Capacity utilization Capacity utilization

Dry Film Photo resist : (144+1440+144) = 28.8 hoursDry Film Photo resist : (144+1440+144) = 28.8 hours

Total available time = 21*8 = 168Total available time = 21*8 = 168

Capacity utilization = 28.8/168 = 17.1% Capacity utilization = 28.8/168 = 17.1%

Set up time : = 300 + 1200 + 1200 = 45 hoursSet up time : = 300 + 1200 + 1200 = 45 hours

Capacity lost in set up = 45 / 168 = 26.78%Capacity lost in set up = 45 / 168 = 26.78%

CNC Drill:CNC Drill:

Capacity Utilization: (9650/(60*168)) = 95.73%Capacity Utilization: (9650/(60*168)) = 95.73%

CNC Router:CNC Router:

Capacity Utilization: (2166/(60*168)) = 21.48%Capacity Utilization: (2166/(60*168)) = 21.48%