Mathematics and Time

Calculation of effort usage No. of total employees = 22 No. of assistant supervisors = 4 condemnation used by assistant supervisors for production process = one C% -10% = 90% Therefore, the total available fag = 18 + 0. 9*4 = 21. 6 Maximum labour hours/ month = No. of days*labour hrs available/day*total available labour = 20*8*21. 6 = 3456 hrs Actual labour hours used = 1531. 7 hrs Capacity Utilization = Actual labour hours used/ Maximum labour hours available = (1531. 7/3456) * 100 = 44. 32% This figure does not include the time interpreted by labour to rework on the parts rejected or returned by the customer.Hence, the actual labour utilization would be more than the to a higher place calculated figure. However, we believe that the to a higher place time signifies the actual time dog-tired by labour in producing or working on unexampled parts. 2) Profile operation (Fabrication) niche even analysis Let the best order size be N boards a) development Punch touch Total O perating period = setup time + Cycle Time*N = 50 + 1*N = 50 + N b) Using CNC router Operating Time = Setup time + Cycle time*N = 150 + 0. 5*N= 150 + 0. 5N We would use the CNC router when its operating time is little than that of the punch press. i. e. 150 + 0. *N ? 50 + N => 0. 5*N ? 100 => N ? 200 => N ? 200 boards and then, for orders above 200 boards, the CNC router should be used as it will take little time and hence, would produce more number of boards.3) Drilling Operation (Image Tranfer) Break Even Analysis Let the optimal order size be N boards a) Using Manual drill Total Operation Time = Setup time + Run time = 15 + 0. 08*500*N = 15 + 40N b) Using CNC drill Total Operation Time = Setup time + Run time = 240 + 0. 004*500*N = 240 + 2*N We would use the CNC drill when its operating time is less than that of the punch press. . e. 240 + 2*N ? 15 + 40*N => 38*N ? 225 => N ? 5. 92 => N ? 6 boards Therefore, for orders with size above 6 boards or more, CNC drill should be used as it will take less processing time and hence would increase the message. In addition to this we contribute also calculate capacity utilization using the available tolerate time. As shown in Table 1, the bottle neck is the drilling operation. Thus the maximum number of boards that can be produced is limited by the capacity of drilling( which is 6359) inclusive of CNC as well as manual drilling.