How to grind tungsten steel milling cutter

Tungsten steel milling cutter is a widely used metal cutting tool, its excellent hardness, wear resistance and cutting properties make it in the manufacturing industry has an important position. However, with the growth of the use of time, the cutting edge of the tungsten steel milling cutter will be worn and worn flat, and it is necessary to be trimmed to ensure its cutting effect and life. The following describes how to properly sharpen a tungsten steel mill.

First: preparation

Before starting the grinding, the following preparations need to be made:

1. Cleaning: Remove the tungsten steel milling cutter from the machine tool, clean it with cloth or brush, remove the oil and metal chips on the surface, and ensure that the surface of the tool is clean and smooth.

2. Check: Check whether the cutting edge of the tungsten steel milling cutter has obvious wear, notch and crack. If there is a problem, it needs to be repaired or replaced.

3. Fixed: the tungsten steel milling cutter is installed on the appropriate sharpening equipment, and the tool is fixed with a special clamp to ensure that the position of the tool is accurate and not loose.

Step 2: Measure the tool size

Before grinding, it is necessary to measure the geometry of the tungsten steel milling cutter, including diameter, length, radial and axial runout and other indicators. Measurements can determine tool wear and help correct trimming and grinding.

Step 3: Determine the cutting Angle and cutting edge shape

The cutting edge shape and cutting Angle of tungsten steel milling cutter have an important influence on its cutting effect and life. Before grinding, it is necessary to determine the appropriate cutting Angle and cutting edge shape according to different processing materials, processing methods and machine parameters.

In the actual grinding process, the cutting Angle usually includes the front Angle, the back Angle, the main Angle and the auxiliary Angle. The cutting edge shape can be selected according to specific needs, including flat mouth, curved mouth, conical mouth, ball mouth and other types.

Step 4: Rough grinding, fine grinding and polishing

After determining the cutting Angle and cutting edge shape, you can start grinding. Generally speaking, sharpening can be divided into three stages: rough grinding, fine grinding and polishing.

In the rough grinding stage, it is necessary to use a rough grinding stone or a grinding wheel for initial trimming of the cutting edge. According to the cutting Angle and the shape of the cutting edge, the Angle of the inclined grinding wheel acts on the edge of the cutting edge to cut the place of excessive wear, so that the shape of the cutting edge can be restored and improved.

In the fine grinding stage, it is necessary to use a moderately fine grinding stone or grinding wheel to remove burrs and bumps on the cutting Angle, so that the cutting surface of the tool can achieve a more uniform and smooth state.

Finally, in the polishing stage, tools such as fine grinding stones or wire brushes are used for processing, and the finish is higher.

Step 5: Measuring tool size and quality check

After the cutting work is completed, measurement and quality inspection are needed to ensure that the tool size is accurate and the accuracy is up to standard. The contents of the inspection include several aspects such as diameter, length, radial and axial runout. If there is a problem, it needs to be trimmed and sharpened again.

Conclusion: The correct sharpening of tungsten steel milling cutter can effectively extend its life and use effect, improve processing quality and production efficiency. In the grinding process need to pay attention to principles, skills and safety, careful operation.