# Donner Compnay Case

Topics: Quality control, Drilling, Drill Pages: 6 (1288 words) Published: March 15, 2013
Operational Management
Case Study Report
Donner Company (9- 689-030)

1. Sketch the normal process flow, i.e., the operations common to most orders. The standard ordering process can be illustrated as follows. 1. Estimate the cost
1. Estimate the cost

3.Order
3.Order

4. Wrote the detail
4. Wrote the detail
Bruce
Altmyer
Bruce
Altmyer
Edward
Plummer
Edward
Plummer
Customer
Customer

2.Customer bid
2.Customer bid
7. Sent the blueprint
7. Sent the blueprint
5. Sent the order
5. Sent the order

Blueprint
Blueprint
Factory
order
Factory
order

7. Sent the
order
7. Sent the
order

David
Flahetry
David
Flahetry
PurchaseAgent
PurchaseAgent

6. Input into
the log
6. Input into
the log

Factory
order
Factory
order

2. What orders would you schedule on the CNC drill? On the CNC router? We can calculate the board size for which the time taken by manual labor drilling and profiling equals the time taken by CNC Drill (for drilling) and CNC Router (for profiling) 1) Drilling

Equation: 29+ (0.080*500*Q) = 240+ (0.004*500*Q)
Therefore, Q=5.92
Thus, for the board size greater than and equal to 6, using CNC machine would have less production time than manual drilling.

2) Profiling
Equation: 50+ (1.0*Q) = 150+ (0.5*Q)
Therefore, Q=200
Thus, for the board size greater than 200, using CNC Router would have less production time than punch press.

3. Assume a normal process flow: How many minutes per board are needed to produce an order of 8 circuit boards; of 40 circuit boards; of 120 circuit boards; of 800 circuit boards?

Operation| Standard Time (Min.)| Production Timeaccording to the no. of the boards| | Setup| Run| 8| 40| 120| 800|
PREPARATION| | | | | | |
Artwork Generation| 29| 0.000| 29.0| 29.0| 29.0| 29.0| Inspect & Sheer| 20| 0.500| 20.5| 22.5| 27.5| 70.0| Punch Tooling Holes| 10| 0.500| 10.5| 12.5| 17.5| 60.0| IMAGE TRANSFER| | | | | | |

Drill| | | | | | |
Manual| 15| 0.080| 335.0| 1615.0| 4815.0| 32015.0|
CNC Drill| 240| 0.004| 256.0| 320.0| 480.0| 1840.0|
Metallization| 10| 0.750| 10.8| 13.8| 21.3| 85.0|
Dry Film Photoresist| | | | | | |
1. Panel Prep| 5| 0.200| 5.2| 6.0| 8.0| 25.0|
2. Laminate & Expose| 20| 2.000| 22.0| 30.0| 50.0| 220.0| 3. Develop| 20| 0.200| 20.2| 21.0| 23.0| 40.0|
Electroplate| 25| 8.500| 33.5| 67.5| 152.5| 875.0|
Strip DFPR| 5| 0.200| 5.2| 6.0| 8.0| 25.0|
Etch & Tin Strip| 10| 0.200| 10.2| 11.0| 13.0| 30.0| FABRIFICATION| | | | | | |
Solder mask| 45| 1.500| 46.5| 52.5| 67.5| 195.0|
Solder Dip| 30| 0.500| 30.5| 32.5| 37.5| 80.0|
Profile| | | | | | |
Punch Press| 50| 1.000| 58.0| 90.0| 170.0| 850.0|
CNC Router| 150| 0.500| 154.0| 170.0| 210.0| 550.0|
Inspect, Test, Pack| 45| 1.500| 57.0| 105.0| 225.0| 1245.0|

4. What is the capacity utilization of operations such as CNC drill, CNC router, and artwork generation? The plant as a whole? What appear to be bottlenecks? Does exhibit 2 reveal anything else about Donner's operations? According to the Exhibit5, the number of operating days was 21days. Assuming the 8hours work per day, the total labor hour on September can be 168 hours. The Utilization is calculated dividing hours per resources by 168hours.

Operation| Standard
Time (Min.)| September’s Total
Standard Production| Utilization
|
| Setup| Run| Setup| Run| Hours| |
PREPARATION| | | | | | |
Artwork Generation| 29| 0.000| 1,450| 0| 24.2| 14.4%| Inspect & Sheer| 20| 0.500| 1,200| 360| 26.0| 15.4%| Punch Tooling Holes| 10| 0.500| 600| 360| 16.0| 9.5%| IMAGE TRANSFER| | | | | | |

Drill| | | | | | |
Manual| 15| 0.080| 765| 37,440| 636.8| 379.0%|
CNC Drill| 240| 0.004| 2,160| 9,650| 196.8| 117.1%|...