tailieunhanh - Crc Press - Mechanical Engineering Handbook - Robotics 1 Part 9

Tham khảo tài liệu 'crc press - mechanical engineering handbook - robotics 1 part 9', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 14-80 Section 14 FIGURE Typical single-purpose workcell. with the right side up and placed on a flat board. Standard machine vision was used to detect the orientation of the parts. Kitting Cell for Large-Scale Manufacturing. In the field of large-scale manufacturing such as automobile manufacturing engine assembly and machining processes where the setup time of specialized tools for each task is excessive the work is generally distributed into several cycle zones. As an example actual cutting time production time represents a value between 5 and 20 of average machine utilization time that includes nonproductive time accountable by workpiece load unload too change setting and workpiece inspect. To avoid a high level of wear and tear on tools due to constant conversion the cycle zone is commonly divided into individual operating cells which may be interconnected in series parallel or a combination of series and parallel. A typical workcell Figure consists of a robot a part-feeder an end-of-arm tooling section and the manufacturing process. The parts are contained in a regularly spaced pallet which are transported by means of an automated guided vehicle AGV or a conveyor to the loading tables and are fed to process by the robot. The most common approach in automated part presentation for machine loading is the use of specially designed pallets for each part family to maintain sufficient position accuracy for a completely preprogrammed robot picking. In the case of assembly purchased parts or parts to be processed are kitted onto one kit tray in a single location. Kitting is the process of taking parts from bulk and placing them on a kit tray which is an organized group of parts. Concentrating the material delivery system and its control to one area is the main benefit of the kitting cell. In addition to efficient use of floor space by eliminating duplicate equipment at each assembly cell the feeders and tooling are universal the same equipment is being .