In the field of mechanical processing and industrial manufacturing, the performance of cutting tools directly affects processing efficiency, product quality, and equipment energy consumption. Among them, cutting tools, as one of the widely used tools, the design and optimization of their blade angle have a crucial impact on the cutting resistance during the cutting process. This article will conduct an in-depth discussion on the relationship between the blade angle of cutting tools and cutting resistance, analyze its mechanism of action, and propose optimization suggestions.

Firstly, the tool edge angle refers to the comprehensive embodiment of geometric parameters such as the rake angle, clearance angle, and main cutting edge angle of the tool cutting part. These angles determine the cutting state of the tool when in contact with the workpiece, thereby affecting the size of the cutting force. For example, the size of the rake angle directly affects the sharpness of the cutting edge and the formation method of the chip. A larger rake angle can reduce the cutting resistance, making it easier for the tool to cut into the material, but it may also reduce the strength and durability of the tool; while a smaller rake angle will increase the cutting resistance, but can improve the rigidity and life of the tool.

Secondly, the adjustment of the clearance angle also has a significant impact on the cutting resistance. The clearance angle is the angle between the tool back face and the workpiece surface, and its main function is to reduce the friction between the tool and the workpiece, thereby reducing the cutting resistance. Appropriately increasing the clearance angle can effectively reduce friction, improve cutting efficiency, but an excessively large clearance angle may lead to a decrease in tool strength and an easy occurrence of chipping.

In addition, the main cutting edge angle is also an important factor affecting the cutting resistance. The main cutting edge angle determines the contact length of the tool and the workpiece during the cutting process. A smaller main cutting edge angle will increase the contact area between the cutting edge and the workpiece, thereby increasing the cutting resistance, but it is helpful to improve the cutting stability; while a larger main cutting edge angle can reduce the cutting resistance and increase the cutting speed, but it may affect the stability of the cutting process.

From the perspective of practical application, the requirements for tool edge angle in the processing of different materials are also different. For example, when processing hard materials such as stainless steel or high-hardness alloys, it is usually necessary to adopt a smaller rake angle and a larger clearance angle to enhance the wear resistance and impact resistance of the tool, while controlling the cutting resistance within a reasonable range. In the processing of soft materials such as aluminum alloys or plastics, the rake angle can be appropriately increased to reduce the cutting resistance and improve processing efficiency.

It is noteworthy that the edge angle does not exist in isolation, but is interrelated with other processing parameters such as cutting speed, feed rate, and cutting depth. The design of a reasonable edge angle should be considered comprehensively in combination with specific processing conditions. For example, in high-speed cutting, the edge angle of the tool should pay more attention to heat dissipation and chip removal performance to avoid tool wear or workpiece deformation caused by high temperature.

In summary, there is a close mutual relationship between the cutting tool edge angle and the cutting resistance. Reasonable edge angle design can not only effectively reduce the cutting resistance and improve processing efficiency, but also extend the tool life and enhance the processing quality. Therefore, in actual production, it is necessary to scientifically select and optimize the edge angle of the tool according to different processing objects and process requirements to achieve the best cutting effect. In the future, with the development of material science and manufacturing technology, the optimization of tool edge angle will become more refined and intelligent, bringing higher benefits and competitiveness to modern manufacturing.