Jun 29, 2020
1. Carbide indexable face milling cutter
Carbide indexable face milling cutter (indexable end milling cutter) as shown. This structure has a low cost and is easy to manufacture. After the blade is blunt, the blade can be directly changed and replaced on the machine tool.
The indexable and milling cutter requires high positioning accuracy of the blade, reliable clamping, easy chip removal and rapid blade replacement. Compared with high-speed steel face milling cutters, cemented carbide face milling cutters have higher milling speed and processing efficiency, and the surface quality is also better. T-pieces with hard skin and hardened layer can be added to improve product quality. Quality and processing efficiency have obvious advantages.
2. Diameter selection
When face milling, the choice of the diameter of the face milling cutter is one of the important issues to be considered.
For a plane with a small area, a face milling cutter with a diameter larger than the width of the plane should be used to achieve a single plane milling. The ideal width of the plane milling cutter should be 1.3 to 1.6 times the width of the material.
For planes that are too large in area, due to the limitations of various factors, such as considering the power of the machine tool, the geometry of the tool and the indexable insert, the installation rigidity, the depth and width of each cut, and other processing factors, the milling cutter tool When the diameter cannot be larger than the width of the processing plane, a face milling cutter with a suitable diameter should be used to mill the plane multiple times. Especially when flat and rough machining, the cutting depth is large, the margin is uneven, and considering the power of the machine tool and the force of the process system, the diameter D of the milling cutter should not be too large.
3. Selection of cutter teeth of face milling cutter
The number of teeth of the face milling cutter has a direct impact on the milling productivity and the quality of T addition. If the number of teeth is large, the number of teeth involved in the cutting is also high. The productivity is high, the milling process is stable, and the processing quality is good. However, its negative impact must be considered: Dense, the smaller the chip space, the poorer the chip evacuation. Therefore, the milling cutter with a relatively large number of teeth is used only when the finishing allowance is small and the chip is small. The number of teeth of the indexable face milling cutter can be divided into coarse according to the diameter. Three kinds of teeth, fine teeth and dense teeth. Coarse tooth milling cutters are mainly used for rough machining; fine tooth milling cutters are used for milling under stable conditions; dense tooth milling cutters have a small feed per tooth and are mainly used for the processing of thin-walled cast iron.
Face milling cutters mainly use end teeth to process various planes. The main declination angle of the cutter teeth is generally 45°, 60°, 75°, 90°. A face milling cutter with a main declination angle of 90° can also process a right-angled surface perpendicular to the plane. The height of this surface is limited by the length of the blade .