Donner Company Case Solution

Good Essays
Topics: Drill
1. The process flow diagram of the production system at Donner.
Preparation Stage

Imagine Transfer

Fabrication

2. What size orders would you schedule on the CNC drill? On the CNC router?
Time taken to process the orders depends on the selected drilling method either
a) Manual drilling or CNC OR b) Using CNC Drill
Assumption 1: Manual Drilling is not done on all the available Manual Drill Presses in parallel.
Calculating time taken for Manual drilling and CNC Drilling:
= Setup Time + Run Time (Per Hole) * No. of Holes drilled on each circuit board * No. of boards
Time taken for Manual drilling =15 + 0.08*500*x where x= number of circuit boards
Time taken for CNC drilling = 240 + 0.004*500*x where x= number of circuit boards
To figure out whether CNC drill to be used,
15 + 0.08*500*x ≥ 240 + 0.004*500*x
Hence x ≥ 5.92. This indicates that whenever 6 or more boards are needed to be drilled, manual drilling will take more time than CNC Drilling
Assumption 2: Manual Drilling is done on all the available Manual Drill Presses in parallel. Total no. of available manual drill presses = 7 (1 Panel per Manual Drill Press)
Total no. of Circuit Boards on Each 12”X18” Panel = 8
Hence total No. of Circuit Boards can be operated in parallel = 7*8=56 Circuit Boards
Time taken for Manual drilling on 1 Drill Press = Time taken for Manual drilling on All Drill Press = 15 + 0.08*500*8 =335 min.
Time taken for CNC drilling for 56 Circuit Boards = 240 + 0.004*500*56=352 min
335 Mins < 352 Mins, so let’s try adding one more Unit of Board and calculate time taken
Time for Manual drilling = Existing time for 56 Boards + Time taken for 1 new Board = 335 + 0.08*500*1= 375 min for 57 Boards
Time taken with CNC drilling for 57 Circuit Boards = 240+ 57*500*0.004=354 min.
Hence when total no. of Boards exceeds 56, the time taken for manual drilling is more than that of CNC Drilling. Therefore, up to an order size of 56 circuit boards,

You May Also Find These Documents Helpful

  • Powerful Essays

    Donner Company Case

    • 1308 Words
    • 6 Pages

    Case: Donner Company EXECUTIVE SUMMARY The Donner Company is a manufacturer of printed circuit boards. They need to address several issues in their supply chain operations to improve their service level because net income in the month of September has drastically decreased. Before September, growth was steadily increasing every month. They found that the major problems include unpredictable bottlenecks in manufacturing, lower than expected productivity and lower than expected quality…

    • 1308 Words
    • 6 Pages
    Powerful Essays
  • Powerful Essays

    Donner Company

    • 4985 Words
    • 20 Pages

    Harvard Business School 9-689-030 Rev. December 11, 1998 Donner Company In October 1987, Edward Plummer, president of the Donner Company, was reviewing the company's position prior to planning 1988 operations. The Donner Company manufactured printed circuit boards to the specifications of a variety of electronics manufacturers. Each board consisted of a thin sheet of insulating material with narrow metal strips (conductors) bonded to its surface. The insulating sheet acted as a structural…

    • 4985 Words
    • 20 Pages
    Powerful Essays
  • Good Essays

    Donner Company

    • 1456 Words
    • 6 Pages

    Central Issues When looking at the Donner Company in 1987, there are some initial concerns. The company as a whole does not have a true sense of how long it takes them to do what they do, and their process flow table is made up of "guesstimates", as throughput time at individual processes have not been formally taken. The company appears to be operating below capacity based on their need to rework their products often, find things for people to do, and meet deadlines that are based on fuzzy estimates…

    • 1456 Words
    • 6 Pages
    Good Essays
  • Powerful Essays

    Donner Company

    • 2565 Words
    • 9 Pages

    DONNER COMPANYOperations Management (Group 9) Ayush Aggarwal 1411348 ayush.aggarwal14@iimb.ernet.in D.K.Harish1411292 dk.harish14@iimb.ernet.in Meenakshi Singh 1411303 meenakshi.singh14@iimb.ernet.in Pavel Gupta 1411315 pavel.gupta14@iimb.ernet.in Suryaansh Makked 1411337 suryaansh.makked14@gmail.com Sachin Gowda M B 1411326 sachin.gowda14@iimb.ernet.in 10/9/2014 INTRODUCTION Donner Company (started in 1985) manufactures printed circuit boards to the specifications of a variety of electronics…

    • 2565 Words
    • 9 Pages
    Powerful Essays
  • Powerful Essays

    DONNER COMPANY CASE STUDY

    • 1687 Words
    • 10 Pages

    DONNER COMPANY CASE STUDY SUPPLY CHAIN AND OPERATIONS MANAGEMENT - 2015 Pr. Sam AFLAKI Sophie LABBAN – MSIM 2015 INTRODUCTION The three-year old Donner Company has positioned itself within both the small volume, customized printed circuit boards market as well as the large volume printed circuit boards market. With 750 competitors in the US, and a market that is volatile, Donner’s engineering expertise to anticipate and resolve design problems enabled it to maintain its…

    • 1687 Words
    • 10 Pages
    Powerful Essays
  • Powerful Essays

    Zachary Harris (#112177795) 11.09.2010 Donner Company FIT Analysis I. Opportunity * Customers: Electronics manufacturers; IBM, AT&T, Digital Equipment are customers for large orders of simple boards or small orders of prototype boards: Specializes in making circuit boards for experimental devices and pilot production runs * Costs: * Variable costs: raw materials, direct labor, selling expense * Fixed Costs: manufacturing overhead, indirect labor, administrative…

    • 1486 Words
    • 6 Pages
    Powerful Essays
  • Powerful Essays

    Donner Company started its operations in 1985 and developed specialized capability in manufacturing circuit boards for experimental devices and for pilot production runs. The company uses “Solder mask over Bare Copper” (SMOBC) technology which is a popular technology for denser circuit patterns and more reliable final product. Automated processes as well as manual processes are used to perform medium-duty, short-cycle, repetitive tasks. They promise a delivery within three weeks for orders less than…

    • 1344 Words
    • 6 Pages
    Powerful Essays
  • Good Essays

    Donner Company Case Analysis Operations Management Indian Institute of Management Bangalore PGSEM 2012 Introduction Donner Company manufactures printed circuit boards (PCB) according to specifications of electronic manufacturers. It is one of the leading PCB manufacturers in United States. It started in 1985. The president of the company, Edward Plummer is reviewing the company position in October 1987, before deciding on plans for 1988. CNC Vs Manual Drill Decision Rules As per our…

    • 667 Words
    • 3 Pages
    Good Essays
  • Better Essays

    Donner Case

    • 1191 Words
    • 4 Pages

    Donner Company Case Overview Donner Company manufactures printed circuit boards for both large and small companies, specializing in experimental devices and for pilot production runs in the late 1980s. The circuit boards that it produces are made from thin sheets of narrow metal strips and insulating material. The process to produce each circuit board is very meticulous and involves many intricate steps. Their process, otherwise known as the “soldermask over bare copper” (SMOBC) process includes…

    • 1191 Words
    • 4 Pages
    Better Essays
  • Powerful Essays

    Donner Case

    • 1114 Words
    • 5 Pages

    of the production system at Donner? Draw a process flow diagram. Question 2: What orders would you schedule on the CNC drill? On CNC router? Operation Setup Time (min) Run Time/board Manual Drill 15 0.08*500 = 40 CNC Drill 240 0.004*500 = 2 Punch Press 50 1 CNC Router 150 0.5 a) CNC Drill vs Manual Drill Let x be order size than – 15 + 40x = 240 + 2x; x = 5.92; From this equation we get x approximately equal to 6. So Donner Company should use the CNC Drill for…

    • 1114 Words
    • 5 Pages
    Powerful Essays