What are the feed rate and cutting depth of the milling machine?

The large feed rate and cutting depth of the milling machine are two critical process parameters, with specific values varying depending on the model, specification, and material being machined. Below is a general introduction to these two parameters:

High Feed Rate

Feed rate refers to the speed at which workpieces or cutting tools move perpendicular to the spindle axis, directly affecting machining efficiency and quality. For milling machines, high feed rates are typically limited by machine design, motor power, control systems, and the materials of the cutting tools and workpieces.

General Range: According to the information I have, the feed rate of the milling machine can be adjusted over a wide range, for example, from 0.003 mm/min to 0.8 mm/min (specific values vary by model). However, the high feed rate of 0.8 mm/min may not be suitable for all milling machines, especially high-precision or ultra-precision models, where lower feed rates may be required to ensure machining accuracy.

Special Machine Models: For certain specially designed milling machines, such as the Zhongke Jinggan UPXM-320A ultra-precision CNC cylindrical grinding machine, although the tooling shaft operating speed can reach 0-4000r/min, the feed rate may not be explicitly stated with a high value but is adjusted continuously according to processing requirements.

Large Cutting Depth

Cutting depth refers to the depth of the tool's penetration into the workpiece surface during the cutting process, determining the amount of material removed per cut. The selection of cutting depth is also influenced by various factors such as machine tool performance, tool strength, workpiece material, and processing requirements.

Two-axis Cutting Depth: In milling, the cutting depth is two-dimensional, including radial cutting depth (perpendicular to the workpiece axis) and axial cutting depth (along the workpiece axis). For large diameter tools, the high radial cutting depth may reach four times the diameter of the tool; for small diameter tools, it may reach a higher proportion. However, these values are for reference only, and the actual cutting depth must be determined based on specific circumstances.

Special Parameters: It is important to note that different types of milling machines may have specific limitations or optimized parameters in terms of cutting depth. For instance, the Zhongke Jinggan UPXM-320A ultra-precision CNC cylindrical grinding machine has different cutting depth requirements for rough and finish machining (0.05mm for rough machining, 0.03mm for finish machining) to ensure machining accuracy and surface quality.

In summary, the feed rate and cutting depth of the milling machine vary due to differences in machine type, specifications, and processing conditions. In practical applications, appropriate parameter combinations should be selected based on specific processing requirements and machine capabilities.