制造成本最低是产品设计的最终目的。本文介绍了工程机械产品设计过程中应遵循的原则以及产品设计技巧，为工程技术人员设计出色、合理的产品，提供了可参考的手段和方法。 The lowest manufacturing cost is the ultimate goal of product design. This article introduces the principles that should be followed in the design process of construction machinery products and product design skills, provides excellent and reasonable products for engineers and technicians, and provides a reference to the means and methods.