You are the engineer of a company that manufactures a specific component using a CNC machine. The cutting tool travels 50 m to produce one single component and, for tool/workpiece combination, the values of the exponent nn and the constant in the Taylor equation are 0.33 and 205, respectively. Your boss, however, wants to accelerate the daily production and asked you to increase the cutting speed of the machine, VV, from 60 m/min to 120 m/min. If the time to replace a tool in the CNC machine when its life ends is 10 minutes, assuming that the cutting operation happens continuously, will the proposed change result in an increased production in 24 hours as your boss expects?

You are the engineer of a company that manufactures a specific component using a CNC machine. The cutting tool travels 50 m to produce one single component and, for tool/workpiece combination, the values of the exponent nn and the constant in the Taylor equation are 0.33 and 205, respectively. Your boss, however, wants to accelerate the daily production and asked you to increase the cutting speed of the machine, VV, from 60 m/min to 120 m/min. If the time to replace a tool in the CNC machine when its life ends is 10 minutes, assuming that the cutting operation happens continuously, will the proposed change result in an increased production in 24 hours as your boss expects?

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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1.) A.) A cutting operation is performed on a piece of metal. The rake angle of the tool, α, is eight degrees. The tool penetrates the work to a depth of 8mm. The chips generated from this cut are 20mm thick. Calculate the shear plane angle, Φ, in the orthogonal model for this operation. Give your answer in degrees B.) For the same cutting operation, the cutting and thrust forces are measured. The cutting force is measured as 1600N, and the thrust force is measured as 1300N. The width of the cut is 4mm. What is the shear stress applied by the tool? Give your answer in MPa.
During a certain machining experiment at the UCSI workshop, it is observedthat temperature at the tool workpiece interface is 1200 oC at a cutting speed of300 mm/min with a feed rate of 0.002 mm/rev. (i) Analyse how the temperature will be affected if the cutting speed isincreased by 100 %.(ii) Determine the cutting speed necessary to achieve a maximum cuttingtemperature of 900 oC
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The following data were obtained in a study taken on a horizontal milling machine:Parts produced per cycle: 8.Average measured cycle time: 8.36 minutes. Average measured stress time per cycle: 4.62 minutes. Average fast traverse time: 0.08 minutes. Average cutting time with electrical power: 3.66 minutes. Performance rating: 115%. Clearance (machine time): 10%. Slack (effort time): 15%. The operator works on the task 8 hours a day and produces 380 parts. How many standard hours does the operator work? What is the operator's efficiency for the 8-hour day?