tailieunhanh - [Psychology] Mechanical Assemblies Phần 7

Tâm lý học được xem là một ngành y khoa được Thomas Willis nhắc đến khi nói về tâm lý học (trong Doctrine of the Soul) với các thuật ngữ về chức năng não, một phần của chuyên luận giải phẫu 1862 của ông là "De Anima Brutorum" ("Hai thuyết trình về Linh hồn của Brutes"). | 328 13 HOW TO ANALYZE EXISTING PRODUCTS IN DETAIL Classify the items as follows i. Main function carriers carriers of important forces motions material flows energy or information2 conveyors or blockers of fields like electricity or heat locators of main geometric relationships ii. Functional supports user adjustments user access seals lubricants vents iii. Geometric supports brackets barriers shields iv. Ergonomic supports handles labels safety items indicators warnings finger guards V. Production supports test points adjustment points measurement points fixturing or gripping surfaces vi. Fasteners reversible irreversible Keep track of dependencies between things such as alignments subassembly boundaries or places where several things must line up for proper function. Note any cases where the product has multiple states such as on off locked unlocked forward reverse low-speed high-speed and so on. These may be associated with parts that have different positions or mating configurations in the different states. Keep track of all the tools needed all the difficult steps and any special care or consideration needed. Take the product apart in stages and ensure at each stage that it can be reassembled from that This is especially important any time the disassembler suspects that energy may be stored in the product. Hidden springs are a typical hazard they can go flying away unexpectedly and may never be found again. It is a good idea to separate items partially peek inside if the items are covers and try to see if any surprises are in store. Look for clues as to how it comes apart. These include parting lines and the direction from which fasteners . HOW TO IDENTIFY THE ASSEMBLY Analysis of a product from the viewpoint of assembly requires addressing many levels of detail. Here we emphasize the lower levels but it is important to remember that as 2These functional categories were developed in Pahl and Beitz 3This is analogous to woodsmanship advice to look .