An experimental device for dynamic demonstration of cutting tool working angle changes

Abstract

An experimental device for dynamic demonstration of changes in working angle of cutting tools, belonging to the technical field of experimental teaching aids. The invention has a simple structure, easy operation, intuitive expression, and is easy to learn and understand. The sliding base plate is set above the fixed base plate and the two are slidingly matched. The tool is fixed on the sliding base plate. The tail end of the tool is connected with a spring. The spring is fixed on the fixed base plate. The rotary shaft is installed on the fixed base plate. The rotary axis and the tool feed The directions are vertical, the cam is fixed in the middle of the rotary shaft, and the cutting edge of the tool is in contact with the cam; the swing frame is hinged on the sliding base plate, one end of the swing frame is connected with a counterweight, the vertical light source is fixed on the other end of the swing frame, and the horizontal light source Fixed at the hinge of the swing frame; the cutting edge of the tool is located on the swing center line of the swing frame; the top rod fixing the bottom plate is in contact with the swing frame; the vertical light source and the fan light curtain emitted by the horizontal light source are orthogonal, and their orthogonal lines are The swing center lines of the swing frame coincide with each other; the outer contour of the cam is composed of Archimedean spiral and arc line.

Description

technical field [0001] The invention belongs to the technical field of experimental teaching aids, and in particular relates to a dynamic demonstration experiment device for the change of the working angle of a cutting tool, which is specifically used for dynamically demonstrating and explaining the law of changing the working angle of the cutting tool during the actual machining process. Background technique [0002] The tool angle is an important parameter used to describe the surface space position of the cutting part of the tool. It is also an important parameter for studying the cutting performance of the cutting tool and the change rule of the tool angle. The tool angle can be divided into the tool label angle and the tool working angle. The tool working angle The angle is the actual cutting angle of the cutting tool in the working state, and the working angle of the cutting tool is in a dynamic change under the working state, but this dynamic change is difficult to obs...

AI Technical Summary

Problems solved by technology

[0002] The tool angle is an important parameter used to describe the surface space position of the cutting part of the tool. It is also an important parameter for studying the cutting performance of the cutting tool and the change law of the tool angle. The tool angle can be divided into the tool label angle and the tool working angle. The tool working angle The angle is the actual cutting angle of the cutting tool in the working state, and the working angle of the cutting tool is in a dynamic change under the working state, but this dynamic change is difficult to observe with the naked eye. At this stage, I want to understand the working angle of the cutting tool in depth. The law of dynamic changes can only be learned through graphic descriptions, static teaching aids or animation demonstrations, and these existing methods are not intuitive enough. They are not very helpful for learning and understanding the laws of dynamic changes in tool working angles, and the effect is not good. reason

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