Sustainable manufacturing: In recent years we all become increasingly aware that ultimately there are limited natural resources on this earth, clearly necessitating the need to conserve materials and energy.The term sustainable manufacturing is now used to indicate and emphasize the need for conserving resources,profitability,this is to be done for the purpose of (a) increasing the life cycle of products,(b) eliminating damage to the environment, and (c) ensuring our collective social well-being,especially for future generations.(Serope Kalpakjian-Steven R. Schmid p:1245)
Circular interpolation: The inputs required for the path are the coordinates of the end points, the coordinates of the center of the circle and its radius, and the direction of the tool along the arc.(Serope Kalpakjian-Steven R. Schmid p:1158)
Numerically controlled robot: The numerically controlled robot is programmed and operated much like a numerically controlled machine.The robot is servocontrolled by digital data, and its sequenece of movements can be changed with relative ease.As in NC machines there are two basic types of controls: point to point and continuous path.Point to point robots are easy to program and have a higher load carrying capacity and a larger work envelope, which is the maximum extent or reach of the robot hand or working tool in all directions.Continuous path robots have greater accuracy than point to point robots but they have lower load carrying capacity.Advanced robots have a complex system of path control, enabling high speed movements with great accuracy.(Serope Kalpakjian-Steven R. Schmid p:1169)
Derivative system for capp systems: Also called the vairent system, these computer files contain a standard process plan for the part to be manufactured.A search for a standard plan (based on its shape and its manufacturingcharacteristics is made in the database by a code number for the part. The plan is retrieved, displayed for review and printed as arouting sheet. The variant process plan includes information such as the types of tools and machines to be used, the sequence of manufacturing operations to be performed, the speeds, the feeds, and the time required for each sequence. Minor modifications of an existing process plan (which usually are necessary) also can be made. In the variant system, if the standard plan for a particuar part is not in the computer file, a plan that is close to it(with similar code number and existing routing sheet) is retrieved. If a routing sheet does not exist, one is made for the new part and stored in computer memory.(Serope Kalpakjian-Steven R. Schmid p:1205)
No comments:
Post a Comment