1, The composition of hourly cost for CNC machining
The hourly cost of CNC machining is not a simple fixed value, but is determined by multiple factors. These factors include but are not limited to equipment depreciation, consumables costs, labor costs, and factory rent.
Equipment depreciation
Equipment depreciation is an important component of CNC machining costs. Processing equipment, such as CNC machine tools, typically have high purchase costs. In order to reasonably allocate this cost, companies usually calculate annual depreciation expenses based on the expected service life of the equipment. For example, assuming the purchase cost of a CNC machine tool is 1.2 million yuan and the expected service life is 10 years, the annual depreciation cost is 120000 yuan, which is approximately 10000 yuan per month. If a device needs to run continuously for 3 days to complete the processing of a batch of parts, the depreciation cost of the equipment for these 3 days is about 1000 yuan. In addition, if the processing requires the use of multiple equipment, including testing equipment, the depreciation cost will need to increase accordingly.
Consumables cost
Consumables cost is another important aspect of CNC machining cost. These consumables include raw materials, cutting tools, and oil, water, etc. consumed during the processing. For example, if processing a batch of shaft parts requires the use of 100 pieces of 45 steel as raw materials, then the cost of these 100 pieces of steel is the raw material cost. In addition, the wear and tear of cutting tools, the consumption of lubricating grease and cooling water during the processing also need to be included in the consumables cost.
Labor cost
Labor cost is the most intuitive part of CNC machining cost. It reflects the labor cost required during the processing. The hourly rate is usually determined based on factors such as the salary level of the processing personnel, processing time, and processing difficulty. If a batch of parts requires three people to spend three days to complete the processing, then the labor cost is the total salary of these three people for three days. In addition, some legitimate enterprises will also equip specialized quality inspection personnel to ensure processing quality, and the wages of these personnel also need to be included in the labor cost.
Factory rent
Factory rent is another fixed expense of CNC machining costs. It reflects the cost of renting factory buildings and paying for daily expenses such as water and electricity for enterprises. Although this part of the cost cannot be fully calculated based on the processing time of the parts, it is still an indispensable part of the CNC machining cost.
2, Factors affecting the hourly cost of CNC machining
In addition to the cost components mentioned above, the hourly cost of CNC machining is also influenced by various external factors.
Processing accuracy and difficulty
The machining accuracy and difficulty are key factors affecting the hourly cost of CNC machining. Generally speaking, the higher the machining accuracy and difficulty of parts, the higher the required machining time and equipment depreciation costs, leading to an increase in machining costs.
Processing materials and techniques
The differences in processing materials and techniques can also have an impact on the hourly cost of CNC machining. For example, some special materials may require special cutting tools and processing techniques, thereby increasing consumables and labor costs.
Equipment performance and accuracy
The performance and accuracy of equipment are important factors affecting the efficiency and quality of CNC machining. High performance and high-precision equipment, although expensive to purchase, can significantly improve processing efficiency and quality, thereby reducing processing costs per unit time.
Regional factors
The labor and logistics costs in different regions can also have an impact on the hourly cost of CNC machining. Generally speaking, in areas with higher labor costs, the hourly cost of CNC machining will also increase accordingly.
3, How to reduce the hourly cost of CNC machining
Regarding the factors affecting the hourly cost of CNC machining, enterprises can take the following measures to reduce machining costs:
Optimize processing technology
By optimizing the machining process, such as selecting appropriate cutting tools and optimizing machining paths, machining time and consumables consumption can be significantly reduced, thereby lowering machining costs.
Improve equipment utilization
By arranging production plans reasonably and improving equipment utilization, the production capacity of equipment can be fully utilized, thereby reducing processing costs per unit time.
Strengthen employee training and management
Strengthening employee training and management, improving their operational skills and quality awareness, can reduce the scrap and rework rates during the processing, thereby lowering processing costs.
Choose appropriate processing materials and suppliers
Choosing appropriate processing materials and suppliers can reduce raw material costs and consumables expenses. At the same time, establishing long-term cooperative relationships with high-quality suppliers can also provide more favorable prices and higher quality services.
Using information technology to improve management efficiency
By introducing information technology methods such as ERP systems, MES systems, etc., the management and production efficiency of enterprises can be improved, thereby reducing processing costs.
