Short Run Machining VS Long Run Machining

As technology progresses in the field of manufacturing, it has opened up new doors that enable the production of intricate shapes and products in a variety of materials. Two of the most popular methods in modern manufacturing are short and long run machining, which have their advantages and disadvantages.

Short Run Machining

Short run machining refers to the production of a small quantity of products. In this process, a manufacturer uses subtractive techniques such as milling, lathing, drilling, and grinding to shape the material according to the design. It is a cost-effective method for producing parts, and manufacturers use this process when the production demand is low. Short run machining also offers the advantage of faster turnaround times, thereby increasing production efficiency.

However, the disadvantage of short run machining is that it is not as cost-effective as long run machining when it comes to large quantities. The per-unit cost of machining decreases as the quantity increases, so short run machining becomes more expensive when the production runs are larger.

Long Run Machining

Long run machining is a process used to produce large quantities of products. The method uses automatic machines that work 24/7 and require minimal human intervention. Computer Numerical Control (CNC) machines are used to produce precision parts, and the cycle time is automatic, making it an efficient and cost-effective way to mass-produce products.

The advantage of long run machining is that it offers economies of scale, making it a more cost-effective method for large quantity production compared to short run machining. It is also a reliable method for producing uniform products that meet quality standards.

However, the disadvantage of long run machining is that it requires extensive setup time and capital investment. It is suitable only when production levels are high, as the setup time is a significant factor in cost analysis.

Conclusion

Both short and long run machining have their unique advantages and disadvantages, and they are suitable for specific production requirements. In general, short run machining is more suitable when the production quantities are low, and there is a need for quick turnaround times. Long run machining, on the other hand, is suitable for mass production of items, providing economies of scale while sacrificing setup time and capital investment.

References

1. Panchal, J., & Sheth, J. (2019). Lean manufacturing for optimum results. Taylor & Francis Group.
2. Chawla, N., & Kataria, A. (2012). Machinability analysis of high-performance materials using CNC machining–a review. International Journal of Advanced Manufacturing Technology, 58(5-8), 789-801.