CNC Processing Valuation Method Four Factors Affecting CNC Processing Prices

CNC Processing Valuation Method Four Factors Affecting CNC Processing Prices

Many people are confused when looking for CNC machining quotations. It is obviously the same part, but the quotations given by different manufacturers can differ several times. In fact, the difference in price is not a random quotation. There is a clear calculation logic behind it . Factors affecting the quotation of precision parts processing. CNC processing valuation method There are four major factors that affect the CNC processing price. If you understand this, it can help you save a lot of money.

The complexity of the drawings directly affects the cost

The more complex the picture is, it means that there will be more steps in processing, and the required processes will become more complicated and trivial. Simple parts may be easily processed with one tool, but complex parts require multiple tool changes, multi-angle processing operations, and even need to be fixed with special fixtures. Each additional process will cause the time occupied by the equipment to increase , which will affect the quotation of precision parts processing , and will also increase labor costs.

Of great importance are the dimension markings on the drawings and the geometric tolerance requirements. If the drawings are densely packed with high-precision annotations, and every surface needs to be inspected, then you have to slow down and confirm repeatedly during processing. The processing costs for such drawings will naturally be much higher than rough sketches.

The processing batch size determines the unit price

When small batch production is carried out, the time for machine tool clamping is fixed, the time for tool setting is fixed, and the time for program debugging is also fixed. If these preparation times are allocated to a single part, the cost will increase. For example, if there are 50 identical parts and 500 identical parts, the unit price of the former may be more than double that of the latter.

When mass production is carried out, the preparation time invested in the early stage is spread over many parts, thus reducing the cost per part. However, CNC processing is different from open mold injection molding. Even if the quantity is large, manual intervention is still required for each clamping. Therefore, the price reduction is limited and is usually gradually reduced within a reasonable range.

The higher the accuracy requirements, the more expensive the price will be.

The field of medical accessories has extremely high precision requirements, usually reaching the micron level. The same is true in the field of communication equipment, and the field of robot joints. To achieve this kind of precision, not only must the processing equipment be high-end, but the operators must also have excellent skills. However, ordinary machine tools simply cannot meet this standard.

High-precision machining means longer processing time and stricter environmental control. Temperature changes will affect the final accuracy. Tool wear will affect the final accuracy. Vibration factors will also affect the final accuracy. More experienced masters are needed to control it. These hidden costs will eventually be reflected in the quotation.

Material hardness affects processing efficiency

Hard materials such as titanium alloy and stainless steel exert a great influence on tool wear. During processing, the tool consumption is rapid and the frequency of replacement is also high. This situation directly leads to an increase in the cost of consumables. At the same time, the cutting speed of hard materials is relatively slow. For parts of the same size, the time required for processing may be several times that of aluminum alloy processing.

Different materials have different cutting parameter requirements. Softer materials allow the use of larger tools for rapid feed, while hard materials can only use smaller tools for slow advancement. This has a direct impact on equipment occupancy time and capacity utilization. When the materials are correctly selected, a lot of optimizations can be achieved in terms of processing efficiency and cost.

There is a difference in valuation between large items and small items

Larger parts occupy a larger space on the surface and are heavier. When the difficulty of processing them is at an average level, the cost of CNC machining is roughly equivalent to the cost of raw materials. In other words, there is a one-to-one correspondence. The greater the quantity purchased, the smaller this proportional relationship will be. If the processing is more difficult, the CNC cost may reach 1.2 to 1.5 times the raw material cost.

When it comes to small and medium-sized parts, the situation is different. When the difficulty is at an average level, the CNC cost is about two to three times the raw material cost. If the difficulty is particularly high, the ratio will rise sharply to five to ten times. The reason is that the material cost of small parts is low, but the time for clamping, tool setting and inspection will not be reduced in proportion as the raw materials are reduced.

Only by choosing the right manufacturer can you control costs.

Trustworthy CNC processing manufacturers will not quote prices randomly and blindly. Instead, they will first review the drawings to evaluate the process route, and then conduct comprehensive calculations based on materials, accuracy, and batch size. Knowing their quotation process can help you judge whether the price is reasonable and avoid being deceived by inflated quotations.

It is essential to compare multiple products when choosing a product, but you must not just focus on the one with the lowest price. There are some low-priced manufacturers who may cut corners in the production process or use inferior cutting tools to barely maintain profits. You should choose a manufacturer with strength and good reputation. Although the unit price may be slightly higher, the quality and delivery time are more guaranteed, which will save costs in the long run.

After reviewing these areas, which factor do you think has the most significant impact on price in the process of precision parts processing? Is it the complexity of the drawing, the size of the batch, or the requirements for materials and accuracy? You are welcome to share your views in the comment area. Once you feel that it is of practical value, remember to like, save, and forward it to friends in need.