SKM754C-69-17102513290_0012.jpg - ME 467 Exam 1 Fall 2017 NAME 4 pt 23 You are to make the product noted in the drawing below using injection molding

SKM754C-69-17102513290_0012.jpg - ME 467 Exam 1 Fall 2017...

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Unformatted text preview: ME 467 Exam 1 Fall 2017 NAME: 4 pt 23. You are to make the product noted in the drawing below, using injection molding. The material used is polystyrene, which has an injection molding pressure of between 8000 psi to 10,000psi. You have 4 machines to choose from; the higher the model number, the higher the cost to use the machine. The machine specs are summarized in the table on the next page. Only one product is made in the mold at a time. You want to use the lowest cost machine possible. a) Clearly draw your desired mold pull direction in your own sketch or on one of the images, using opposing arrows. (< >). b) Designate the proper 12.460 Volume = 32.08 cubic inches machine to use, based solely upon these three criteria. Show your work 12.460 for full credit. Injection Pressure . Shot volume (assume 15% .330 scrap for runners and -11.800 sprue in shot volume) 100 THICKNESS TYPICAL Clamp tonnage . Minimum machine cost 4.000 FROM R1.000 7 lijedim pressure: 10 K PSI - ANY > shot Volume = ( 1. 15 ) ( 32. 08 in3 ) = 36, 892 in] Dimensions in inches - BS320 or BS 130 0 7 Aprojected = (12, 46 0) = 155, 252 in2 Filmp = (Pig ( A ) = (10 * 10 3 Psi )( 15 5, 25 2in2)- 155,3516 1bf 2000 lbf /ton 2020 1 24 mm F clamp - 776. 258 tons ON LY BS 1306 7 cost - with only one machine that works doesn'tmatter. D Page 12 of 13 B51300...
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