Question

Metal frames for kick scooters are manufactured in two steps: Stamping and assembly. Each frame is made up of three pieces: one unit of part A and two units of part B.

The parts are fabricated by a single stamping machine that requires a set up time of 90 minutes switching between two part types. Once the machine is set up, the activity time for parts, regardless of type, is 30 seconds each piece. Currently, the stamping machine rotates its production between one batch of 120 part A’s and 240 part B’s. Completed parts move only when the entire batch is produced.

At assembly, parts are assembled manually to form the finished products. The three parts and a number of small purchased components are required for each unit of final product. Each product requires 30 minutes of labor time to assemble. There are 12 workers in assembly. There is sufficient demand to sell every scooter the system can make.

At the current batch sizes, what is the process capacity in units per hour? Choose the answer below that is closest to the correct answer. A unit refers to a complete scooter frame (i.e. one part A and two parts B)

a. 1 unit/ hr
b. 5 units/ hr
c. 10 units/ hr
d. 20 units/ hr
e. 24 units/ hr
f. 30 units/ hr
g. 40 units/ hr

Answer 1

Answer:

20units per hour

Explanation:

Because The capacity at stamping is 120/(90+120*0.5+9-+240*0.5)*60=20 units per hour. The capacity at assembly is 1/30*12*60=24 units per hour. Therefore, stamping is the bottleneck.

Answer 2

Answer:

Since there is adequate interest to sell eve, bike as Were is adequate interest, along these lines Were would be no bottleneck and the group delivered at the stepping stage will go straightforwardly to the assembly stage  

At assembly stage:

Labor time required to assemble each product by a labor = 30 minutes

$Process capacity = \frac{1}{30} minutes$

$Process capacity = \frac{1}{30} *60$

$Process capacity = 2 Unit Per Hours$

Process capacity when 12 labors are engaged = 2 units per hour × 12

Process capacity when 12 labors are engaged = 24 units / hr

One approach to expand limit is by expanding the numbs of laborers at the get together as the interest is adequate henceforth expanding of laborers would build number of units created

Batch size = 120 for A; Batch size = for B

It is the right choice to minimize inventory and maximize flow rate.