By Gideon Halevi (auth.)
Process making plans detennines how a product is to be synthetic and is hence a key point within the production technique. It performs a big half in detennining the price of elements and impacts all manufacturing facility actions, corporation competitiveness, construction making plans, construction potency and product caliber. it's a an important hyperlink among layout and production. regardless of the significance of method making plans within the production cycle, there's no fonnal technique which might be used, or might help to coach body of workers for this activity. procedure making plans actions are predominantly exertions in depth, looking on the adventure and the ability and instinct of the planner, and accordingly usually precludes a radical research and optimization of the method plan which almost continually leads to better than priceless construction charges, delays, error and non-standardization of approaches. approach making plans is thought of as an artwork and never a technological know-how. study within the box of method making plans has indicated that each one specialists have their very own services and one expert's event will be diverse from that of one other. it really is infrequent, as a result, for 2 planners to provide a similar approach. each one technique will produce the half as distinctive, even though varied techniques will lead to diversified processing instances and prices. The query is, who's knowledgeable? through definition knowledgeable is one 'having or manifesting the data, ability and event wanted for fulfillment in a specific box or endeavor', or 'one who has bought distinct ability in or wisdom and mastery of something'.
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Extra resources for Process and Operation Planning: Revised Edition of The Principles of Process Planning: A Logical Approach
Problems with automation in assembly r-----------------------------~ ~ 30 20 10 o 4 5 1 - 30% 2 - 26% 3 - 20% 4 - 15% 5 - 9% 3 2 The design is not assembly oriented Difficult handling of components High adaptation and adjustment activities Visual inspection during assembly Low precision of single components Figure 7. Percentage of each obstacle to automate assembly If these points are considered more closely, it becomes evident that the poor handling aptitude of individual parts and high proportion of adaptation and adjustment work can be avoided by assembly-oriented product design.
Each shape must have its own special tool, which is quit expensive. 6. EDM Electrodischarge machining (and ECM, electrochemical machining) are non-conventional processes. The tool have the shape of the required workpiece and is moving in z direction. The workpiece is stationary. Sparks vaporize a small spot on the workpiece material which is then washed away by an electrolyte. This method is effective for machining vary hard material and producing odd shapes with high surface finish. 7. Laser beam machining A process using a light beam of high intensity and single frequency to bum and vaporize workpiece material.
It is always preferable to feed the nut first and then drive the screw into it and in many cases it is safer to start the thread with light pressure at one station and transfer to a second station for final tightening. Combination fasteners should be avoided wherever possible in quantity mechanized assembly. 4 Joining by heat Welding and Heat sealing.. Both processes require no additional material to make the joint and as such are ideal fastening methods, but require time and constant pressure applied at the electrode during the joining process.