Suppose the jig in Figure 29-7 could be improved by replacing the screw clamps with toggle clamps. Many things are needed to be able to cost justify the improvement in the jig. This problem requires that the engineer estimate or determine the following:
1. How much time is saved with a toggle clamp (in the loading and unloading) cycle?
2. How much does a toggle clamp cost?
3. How much will it cost to modify the existing jig? Currently, for this job, the machining cycle time to drill the two holes is 1 min and the unload/load time is 30 sec, the operator is getting $12 per hour and the machine cost is $30 per hour.