Tuesday, February 15, 2011

Çağatay Kadir Aktaş, 030060176, 1st week

Design for Assembly:
Assembly is an important phase of the overall manufacturing operation and requires consideration of the ease, speed and the cost of putting parts together. Furthermore, products must be designed so that disassembly is also possible, in order to enable the product to be taken apart with relative ease for maintenance, servicing and recycling of its components. Because assembly operations can contribute significantly to product cost, design for assembly, as well as design for disassembly, are important aspects of manufacturing. Typically, a product that is easy to assemble is also easy to disassemble. Further important developments include design for service, the goal of which is that individual parts or sub-assemblies in a product be easy to reach and service.
(Kalpakjian S., Schmid S.R., Manufacturing engineering and technology, pg 15)

Batch production:
Production rate is defined as the number of the parts produced per unit time, such as per day, per month or per year. The approximate and generally accepted ranges are given at the related tables in books or standarts. Job shops typically produce small quantities per year using various stardard general-purpose machine tools or machinig centers. Batch production is the kind of a production which usually involves lot sizes between 100 and 5000. It utilizes machinery similar to that used for small-batch production but with specially designed for higher prouctivity.
(Kalpakjian S., Schmid S.R., Manufacturing engineering and technology, pg 1149)

Small-batch production:
Production rate is defined as the number of the parts produced per unit time, such as per day, per month or per year. The approximate and generally accepted ranges are given at the related tables in books or standarts. Job shops typically produce small quantities per year using various stardard general-purpose machine tools or machinig centers. Small-batch production is the kind of a production which has the quantities typically range from 10 to 100 and the equipment used consists of general-purpose machines and machining centers with various computer controls.
(Kalpakjian S., Schmid S.R., Manufacturing engineering and technology, pg 1149)

Soft Automation:
We have seen that hard automation generall involves mass-production machines that lack flexibility. In soft automation (also called flexible or programmable automation) greater flexibility is achieved through the use of computer control of the machine and or its functions; thus it, can produce parts having complex shapes. Soft automation is an important development, because the machine can be reprogrammed easiyl and readily to produce a part that has a shape or dimensions different from the one produced just prior to it. Further advances in flexible automation include the extensive use of modern computers leading to the development of flexible manufacturing systems with high levels of efficiency and productivity.
(Kalpakjian S., Schmid S.R., Manufacturing engineering and technology, pg 1151)

1 comment:

  1. @Design for Assembly
    I USED YOUR REFERENCE. FIRST SENTENCE OF YOUR ANSWER IS GOOD BUT YOU GIVE EXTRA INFO ABOUT DISASSEMBLY IN THE MIDDLE OF ANSWER. IF YOU CONCENTRATE ONLY ASSEMBLY (DFA), YOUR ANSWER WILL BE BETTER. YOU SHOULD GET MORE INFORMATION ABOUT DFA WITH USING YOUR REFERENCE.

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