5 months ago

The Art of Manufacturing Ch1 Draft 8-23-18


The Art of Manufacturing In ID and OD Turning Operations the depth of cut is ½ the change in diameter for each pass. In facing operations the depth is the change in length for each pass. Copyright Engineering Media Productions 2018 30

The Art of Manufacturing Chapter 2: Profit may be King but Quality Rules the Realm – If you can’t measure it then you can’t make it All businesses must make a profit to succeed overtime, this makes profit king, but if you simply go for short term profits with fancy marketing and sales tricks or worse by cutting costs in a way that reduces the quality of your parts you eventually alienate your customers because they stop receiving the value they expect. Years ago there was a candy manufacture, Acme Chocolates. They experienced this lesson first hand, or so the story goes. Acme chocolates had the best selling candy bar on the market, sales were growing, but profits were flat, and so the board of directors brought in a new CEO to turn things around. The new CEO, let’s call him George, had an MBA from one of the best business schools, he was a SixSigma Black belt, and was a master of Lean Thinking. Not only that, George knew something about making candy too. There was no doubt at all that he could get the profits to line up with the sales, do doubt at all. The first thing that George did was call a meeting of the production engineers and management team. They showed him Spaghetti Diagrams, charts, and spreadsheets. They talked about incremental improves they could make generating incremental savings and marginal profit gains. George said it wasn’t enough. He thought for a second and told the production manager to go back to the slide with the list of ingredients in the Acme Bar sorted by annual costs. “There” he said triumphantly. “Ingredient number 17 on that list. If we just stopped buying that one ingredient would save almost 8 million dollars a year! If you can figure out how to make me an Acme Bar that tastes just as good without that ingredient I’ll distribute half of that 8 million to your team as a onetime bonus next year. Well you can bet with an incentive like that, they went to work. Not only that, they did it. It took process tweaks, changes in the quantity of other ingredients, and an enormous amount of customer taste tests to ensure that the quality of the new Acme Bars was just as good as the old (Some of the tests even showed that the new one was better.) It turned out that the net savings was just over 6 million and George made good on his promise. Everybody was happy, profits were up sales were up, and the stock value was up. Copyright Engineering Media Productions 2018 31

CNC Quick Guide for Haas Mills