Wednesday, February 23, 2011

Burak Çınar, 030060132, 2nd Week

Resource Planning Process:

Process planning involves long term and short term planning. In conventional manufacturing systems, this usually involves the use of manufacturing requirements planning (MRP-2) and master production scheduling (MPS) type systems. However, conventional systems tend to rely on the fact that large quantities of standard products with standard bills of materials (BOM) are being used to plan and schedule processes and resources.

Also, because of the customised nature of sub-components, the planning of any distributed manufactured parts requires additional attention. Operation can not rely on a steady stream of standard parts from an outside source as each part is different and needs to be specified accurately before being ordered. Timing is important, as otherwise promised delivery dates are not going to be met and delivery times become extended.

(Process Planning and Scheduling for Distributed Manufacturing, Lihui Wang, Weiming Shen, page 117)

Staking:

Staking is a process that is specially suited to connect parts made from dissimilar materials. One part is provided with studs, which protrude through holes in other part. The studs are then deformed through the cold flow or melting of the plastic to form a head which mechanically locks the two components together. It is a quick and economical technique and it has an advantage that no consumables such as rivets and screws are required.

Staking is widely used in many fields like, automotive industry, telecommunications, electronics, medical equipment and consumer appliances

(Manufacturing Technology-I, Gowri, page 407)

Rough-Cut Capasity Planning:

Rough-cut capacity planning is used to check the feasibility of the master production schedule. The RCCP takes the master production schedule and converts it from production to capacity required, then compares it to capacity available during each production period. If the medium range capacity and production plans are feasible, the master production plan is firmed up. Otherwise, it is revised or the capacity is adjusted accordingly. Options for increasing medium range capacity include overtime, sub-contracting, adding resources, and an alternate routing of the production sequence.

(Principles of Supply Chain Management, Joel D. Wisner, Keah-Choon Tan, G. Keong Leong, page 194)

In-process Inspection

In-process Inspection is to inspect or check the quality of component parts as close to manufacturing as possible and thereby identify the source of quality problems as early in the manufacturing process as possible. This will result in minimizing the need for later repairs and rework. Each production operation performed correctly makes for a smooth running plant with low operation costs. A well run in-process inspection programe will result in the following two advantages:

- Reduction of major surprises from customers due to the bad quality

- Decrease in labor cost due to a decrease in repair rates.

(Managing quality in the apparel industry, Pradip V. Mehta, Satish K. Bhardwaj, page 36-37-38)

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