Calculating Direct Machine Downtime Penalties from Moisture Induced Part Defects
Calculate downtime penalties by summing unabsorbed press hourly burden, loaded labor, scrapped resin mass, purge cycles, and hot runner clearing expenses.
Machine Burden Rate
Meaning
Standardized hourly charges capture the total cost of operating production equipment beyond the cost of materials and direct labor. Calculation of a machine burden rate includes the depreciation of the injection molding press and the cost of the floor space it occupies in the facility. Engineers use this figure to estimate the total production cost for a specific part by multiplying the rate by the cycle time.
Overhead Distribution
Utility costs like electricity for the heaters and motors form a substantial part of the variable expenses. A higher machine burden rate often applies to larger tonnage presses because they consume more power and require more expensive maintenance. This allocation method ensures that the price of each part includes a fair share of the factory overheads.
Utility Consumption
Energy audits provide the data needed to adjust the rate when electricity prices fluctuate. Since the machine burden rate remains fixed for a production period, molders must monitor actual consumption to ensure the recovery of costs. Inaccurate rates lead to underestimated quotes and reduced profitability for the molding business.
Maintenance Expense
Planned servicing and the replacement of wear parts like the screw and barrel contribute to the total annual cost. When a machine burden rate is calculated accurately, it provides the funds necessary for future equipment upgrades. Effective cost management depends on the periodic review of these figures against actual spending to ensure that every machine remains a profitable asset on the floor.