Angle Milling

 

For CNC milling parts, the quality of the finished workpiece is crucial. In CNC milling cutting, the selection of cutting tools and the effective determination of cutting parameters are key aspects. To ensure the machining process meets standards, programmers must accurately grasp the basic principles of tool selection and cutting parameter determination. At the same time, the characteristics of each part's machining process should also be given high importance.

 

 

 

 

 

I Angle Milling Tools

Tools used in angle milling mainly fall into two categories:

 

1. Single-Angle Cutters:

 

▲Single-Angle Cutters

 

These tools are designed for cutting bevels. The most common angles are 45° and 60°, but other custom angles can also be used depending on the machining needs. Single-angle cutters are ideal for creating chamfers or sloped surfaces.

 

2. Double-Angle Cutters:

 

▲Double-Angle Cutters

 

These tools can simultaneously cut both sides of a V-groove and are typically used for machining internal angles in one pass. The most common configurations include 45°, 60°, and 90° cutters. Double-angle cutters are ideal for complex angle geometries requiring multi-angled surfaces.

 

 

II Angle Milling Techniques

 

1. Choose the Right Milling Cutter:

Select tools specifically designed for angle milling, such as single-angle or double-angle cutters. Ensure that the cutter material (e.g., high-speed steel, carbide) matches the workpiece material to minimize wear and achieve better surface finish.

 

2. Accurate Machining Setup:

Use a universal milling machine or machines with rotary heads to adjust the tool or worktable to the required angle. Use angle plates, sine bars, or digital angle gauges for precise angle setup. Secure the workpiece firmly with a vise, fixture, or custom clamping device to prevent movement during milling.

 

3. Tool Path Planning:

Based on the material and machine rigidity, choose climb milling (for better surface finish) or conventional milling (for reduced tool wear). For roughing operations, use multiple passes to reduce tool stress and improve accuracy.

 

4. Minimize Tool Deflection:

Keep the tool overhang as short as possible to reduce deflection. Use robust and rigid tool systems to maintain dimensional accuracy.

 

5. Use Appropriate Coolants and Lubricants:

Apply proper coolant to dissipate heat and extend tool life. Use cutting oil or lubricants to reduce friction and enhance surface finish.

 

6. Perform Test Cuts:

Make test cuts on scrap material to verify machining parameters and make necessary adjustments. Fine-tune machine settings and cutting parameters based on test results.

 

7. Measurement and Inspection:

Use protractors, angle gauges, or coordinate measuring machines (CMMs) to inspect the machined angles. Check surface roughness and make adjustments as needed to improve the quality of the finished part.