1. What are the factors that affect CNC plus common difference?

• Machining tolerances are mandatory when defining part dimensions. Unless the customer specifies any specific tolerances, products will be manufactured to universal tolerance standards. However, different factors affect tolerances in manufacturing.

1.Material properties:

The physical and chemical properties of different materials, such as hardness, toughness, thermal expansion coefficient, etc., will affect processing tolerances. For example, some materials may be prone to deformation or stress during processing, so the tolerance range needs to be adjusted to accommodate these characteristics.

2. Accuracy of processing equipment and cutting tools:

The accuracy and stability of CNC machine tools and the sharpness and wear of cutting tools will directly affect the accuracy and tolerance of processed parts. High-precision equipment and cutting tools can reduce tolerance ranges and improve processing quality.

3. Process selection and processing process:

Different machining processes and machining parameters (such as cutting speed, feed amount, coolant usage, etc.) will have an impact on machining tolerances. Optimizing process parameters and selecting appropriate processing methods can help reduce tolerance ranges.

4. Environmental factors:

Environmental factors such as temperature and humidity may also affect processing tolerances. For example, high temperatures can cause materials to expand, affecting machining accuracy.

2. What are the precautions and techniques when choosing CNC to add joints?

1. Understand the functional requirements of the parts:

Select an appropriate tolerance range based on the functional requirements of the part during assembly and use. For critical components or parts that require high fit accuracy, a smaller tolerance range should be selected.

2. Consider processing costs and production efficiency:

Too small a tolerance range may increase processing difficulty and cost, and reduce production efficiency. Therefore, on the premise of meeting the functional requirements of the part, the relationship between the tolerance range and cost and production efficiency should be weighed.

3. Follow relevant standards and specifications:

The tolerance range is selected in accordance with relevant national and industry standards and specifications to ensure the interchangeability and versatility of parts.

4. Use appropriate measurement tools and methods:

Choose high-precision measuring tools and methods to detect the tolerances of processed parts to ensure the accuracy and reliability of measurement results.

3. When are strict tolerances not required?

Tight tolerances are a key specification in CNC machined blade design. They indicate the permissible deviations from specified dimensions when manufacturing a product. However, there are situations where tight tolerances are impractical or unnecessary. Here are some examples:

• Tight tolerances are not recommended when processing materials with high thermal expansion or contraction characteristics (including aluminum alloys, plastics such as acrylics, and polyethylene).

• If the fit between components designed for assembly requires some variability, tight tolerances are not required. Looser tolerances can make parts assemble easier, reducing the risk of misalignment.

• Tight machining tolerances may not be necessary for consumer products, which can accommodate small changes in size without affecting their overall quality and performance.

• You may consider not using strict tolerances on dimensions so as not to affect the fit and functionality of the product. Therefore, tight tolerances are not necessary for non-critical features used for decorative purposes.

• Since tighter tolerances will bring higher processing costs, it is not recommended to use strict tolerances when cost is the main factor, and strict tolerances will not affect functionality.

4. Which industries require precision CNC tolerances?

Precision CNC machining tolerances are used in industries that require tight tolerances to meet stringent design and functionality standards. Some of these industries include:

1.Aerospace field

2. Medical device field

3. Precision instrument field

4. Electronic communications field

5. National defense and military fields

These industries have extremely high requirements for product accuracy and stability, so precision CNC machining is required to ensure the tolerance range of parts. For example, in the aerospace industry, parts need to withstand extreme environmental conditions and strict mechanical performance requirements, so tolerance ranges must be very tight to ensure product safety and reliability. Similarly, medical devices and precision instruments also require high-precision parts to ensure their functionality and performance. In the field of electronic communications, high-precision parts are also crucial to ensure signal stability and transmission quality.