centercenter18A1HP051 Gunalan Anush Kumar
18A1HP090 Siddharth Sehgal
18A2HP411 Saurav Dineshpratap Singh
18A2HP450 Mohammad Imad Shahid Khan
18A3HP645 Leela Sai Bharadwaj Sake
Donner company
gRoup-m sec-b
882009090018A1HP051 Gunalan Anush Kumar
18A1HP090 Siddharth Sehgal
18A2HP411 Saurav Dineshpratap Singh
18A2HP450 Mohammad Imad Shahid Khan
18A3HP645 Leela Sai Bharadwaj Sake
Donner company
gRoup-m sec-b
Process flow diagram
left46990Step 1
Step 1
68580095250Estimate Labor and material cost for bidding
Estimate Labor and material cost for bidding
center48260 If bid accepted deliver promised within deadline
00 If bid accepted deliver promised within deadline
left10160Step 2
Step 2
left286385Step 3
Step 3
72390019685 Factory order and detail material specification should prepare
Factory order and detail material specification should prepare
57150267335Step 4
Step 4
center48260Order details sent to purchase agent
Order details sent to purchase agent
5715010795Step 5
Step 5
center48895Enter the order in log and send a blue print
Enter the order in log and send a blue print
3810010795Step 6
Step 6
center48895Schedule the work
Schedule the work
In preparing a bid to customer order, Plummer, President, Altmeyer, and Design Engineer Estimated Labor and material cost.
Order of boards up to 1000 will be deliver in three weeks and if it is more than 1000 then delivery will take for five weeks, if customer accept the bid.
Preparation of detailed data of no of circuits, material specifications, factory order material specifications, delivery date and sequence of specifications
For procuring raw materials at low price in about 4 days of normal order, order details should send to purchase agent
Enter the order in log and send a blue print
Based of the estimation of labor, raw materials, worker shift we have to schedule the order
Order size should be considered for the CNC router
PUNCH PRESS CNC Router
Setup time 150 50
Run Time for 1 Circuit Board 0.5 1
Order size X X
Total setup time and Run time 150+(0.5*X) 50+(1*X)
To find the breakeven point, both must be equal.
150+(0.5*X)=50+(1*X)
X= 200.
Stage Set Up Time Run Time Time taken
Board Order size 8 Board Order Size 800
Preparation Artwork Generation 29 0 29 29
Inspect & Shear 20 0.5 20.5 70
Punch tooling Holes 10 0.5 10.5 60
Image Transfer (Drill Holes) Manual Drill 15 0.08 335 –
CNC Drill 240 0.004 – 1840
Metallization 10 0.75 10.75 85
Image Transfer (DFPR) a. Panel Prep 5 0.2 5.2 25
b. Laminate & Expose 20 2 22 220
c. Develop 20 0.2 20.2 40
Electroplate 25 8.5 33.5 875
Strip DFPR 5 0.2 5.2 25
Etch & Tin Strip 10 0.2 10.2 30
Fabrication Soldermask45 1.5 46.5 195
Solder dip 30 0.5 30.5 80
Punch Press Punch Press Profile 50 1 58 –
CNC Router Profile 150 0.5 – 550
Inspect, Test, Pack 45 1.5 57 1245
Total (mins) 694.05 5369
Minutes per Board 86.75625 6.71125
So if the order size is more than 200, then only Donner should take the decision of changing to CNC. Or else, the company should not consider the CNC option.
As per Exhibit 2, following is the time efficiency that is achieved by the process depending on the order size and the process of manufacturing:
Steps to decrease the flow time of the jobs
The desk was 18″ away from plating tanks. It was found that 15% of the time was spent walking between them. So the plater can be placed near to the plating tank to reduce the walking time.
Designate workers into different processes depending on the type of the job.This will reduce the time wastage and hence making the process more efficient.
Almost 1/4th of the jobs get delayed due to the telephone calls. So to the tackle this situation we can either employ a separate team to take those calls or employ from the existing employees. This would increase the productivity and reduce the job delay
Donner is accepting more orders what they can accommodate in their workshop.
Effect on Shop floor:
Every order has a different design and different order size that leads workers to be assigned randomly in different activities depending on work load. This will lead to inefficiency and scheduling problems.
Workers who are handling manual drilling will run out of work. The reason is due to large order size where CNC drilling is being used. The drilling process requires less man power and many workers will remain idle. Finally, it will lead to loss in productivity.
Incomplete of operations has led to return of circuits and it has increased to 3% from 1%. This shows the company is incapable of handling bulk orders.
Rise in return of orders leads to reprocessing and shipping of the same order. It will require employees to repeat the same process with will affect the productivity and operational efficiency will be reduced of the firm.
Senior employees keep a watch on small orders and it leads to a smoother operation compared to bulk orders.
Workers don’t have a clarity on what work is expected from them which leads to time wastage and its extremely difficult to assess their performance based on type of work and duration of work.
Thank You
