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

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

High Feed Rate

Feed rate refers to the speed of movement of the workpiece or tool perpendicular to the spindle axis, directly affecting processing efficiency and quality. For milling machines, high feed rates are often limited by machine design, motor power, control systems, and the materials of the tool and workpiece.

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

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

Deep Cutting Capacity

Cutting depth refers to the depth at which the tool penetrates 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, including machine tool performance, tool strength, workpiece material, and processing requirements.

Two-axis Cutting Depth: In milling, the cutting depth is two-dimensional, encompassing 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 be 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's 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 turning and finish turning (0.05mm for rough turning, 0.03mm for finish turning) to ensure machining accuracy and surface quality.

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