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Auburn Engineering CNC (Computer Numerical Control) Department

Improved Profitability Exercise Featuring Methods Analysis, Motion Study, Work Sampling and Time Study. Auburn Engineering CNC (Computer Numerical Control) Department. CNC Machining.

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Auburn Engineering CNC (Computer Numerical Control) Department

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  1. Improved Profitability ExerciseFeaturing Methods Analysis, Motion Study, Work Sampling and Time Study Auburn Engineering CNC (Computer Numerical Control) Department

  2. CNC Machining This operation takes CAD designs to the manufacturing stage, in this particular example we are going to be looking at CNC machining from a prototyping tooling perspective. This involves taking a aluminum block to a cavity, or a core of a plastic injection mold, using various different cutting tools. The CNC machines are programmed by various different machining software, in our case we will be referring a software called WorkNC.

  3. Vertical Machining Center

  4. Methods Analysis • Break down the machining process • Analyze if all the procedures are necessary on each cavity or core. • Find necessary machine movements and unnecessary • Eliminate the unnecessary.

  5. Methods Analysis (PRO’S) • Reduced machine time. • Increased productivity. • Less wear and tear • Decreases the bottleneck effect. Methods Analysis (CON’S) • Increased man hours on NC Programming. • Increased overtime • Skilled labor

  6. Motion Studies • The movement of the worker from the machine to the tool crib. • The worker must walk to the tool crib on each operation to gather correct equipment and cutting tools. • Tools are heavy. • There may be up to ten different setups in a day. • Solution, put the tool crib on a cart, thus allowing worker to have the tools readily needed next to the machine.

  7. Motion Study (PRO’S) • Less Fatigue • Greater Output • Less Time Motion Study (CON’S) • Only one person can use the cart at one time. • Or greater spending on tools to have more than one cart.

  8. Work Sampling Work sampling is used very often in CNC machining. The machines typically run on certain molds for hours, and the feeds and speeds of the operation can be controlled manually by the machine operators. The machine operators sometimes slow down the pace of the machines, so that the operation will take all day, thus meaning the worker will not have to set up another job on that particular machine. Random sampling, at the machines, will allow a supervisor to check for this common occurrence.

  9. CNC CONTROLS

  10. Work Sampling (PRO’S) • Catches the worker off guard by coming at random times of the day thus allowing management to see true performance at that time of the day. • This type of sampling should keep employees from tampering with the machines.

  11. Time Studies Time studies in this particular area would be hard to have. The workers job is based more on the operation being precise, and it is not two awful time consuming. The work always varies also, meaning that one mold could be much larger than the next, thus taking longer to cut and loner to set up.

  12. Analysis Conclusion Through method analysis, work sampling, and motion and time studies, the process of CNC machining’s production time will be cut down dramatically, through optimizing, and upgrading Auburn Engineering's current processes.

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