Gear hobbing machine teaching instrument

Abstract

The invention discloses a gear hobbing machine teaching instrument. A motor is connected with a main transmission gear in match; the main transmission gear is meshed with a secondary transmission gearand a secondary transmission shaft at an upper part and a lower part respectively; the tail end of the secondary transmission shaft is connected with a bevel gear; the bevel gear and small gears aremutually meshed; the small gear at the upper part is connected with a hobbing cutter through a hobbing cutter shaft; the small gear at the lower part is meshed with a worm gear through a worm; tank bodies are respectively arranged left and right at the bottom end of a base; the main transmission gear and the secondary transmission gear are fixed by the tank body on the right side; the tank body onthe left side is moved in a vertical direction; a support plate is mounted inside a forked tail groove; the worm gear and a wax mold are respectively positioned on the tank bodies through positioningcolumns and springs. By adopting the teaching instrument, gear formation method processing principles and gear hobbing machine working principles are actually demonstrated, and a motor is powered onto drive the hobbing cutter to move to cut the wax mold, being safe and reliable; by adopting the teaching instrument, a standard gear can be cut, and a profile shifted gear can be also cut; the transmission process of an industrial gear hobbing machine can be simplified, gear formation method principles can be emphatically demonstrated, and the cost can be greatly reduced.

Description

technical field [0001] The invention relates to a teaching aid, in particular to a gear hobbing machine teaching aid which applies a generating method to process gears. Background technique [0002] Fancheng method, also known as development method or envelope method, is the most commonly used method for cutting and processing gears. It is also difficult for students to understand in the teaching of "mechanical principles" and "mechanical design foundation". Therefore, many schools have set up gear fanning method principle experiments. To deepen students' understanding of the method. The way of experiment mainly includes visiting industrial gear hobbing machine or gear shaper, using gear fan to simulate the involute forming process and using computer simulation technology to simulate the gear processing process. [0003] Due to the large size, high cost and danger of industrial gear hobbing machines or gear shaping machines, they are generally only used for demonstration ex...

AI Technical Summary

Problems solved by technology

[0003] Due to the large volume, high cost, and danger of industrial gear hobbing machines or gear shaping machines, they are generally only used for demonstration experiments, and students cannot operate them by themselves, and it is difficult to clearly observe the formation process of involutes and undercutting phenomena in the real processing environment. , it is not very helpful for students to understand the processing principle of Fancheng method

The gear fanning instrument is a simple device that simulates the principle of the fanning method. It uses circular paper instead of the gear blank, and uses a pencil to describe the cutting process. It has low cost and no operational risk. The disadvantage of gear fan Chengyi is that students cannot see the complete gear, which is not intuitive enough

There are also many schools that have developed software programs to simulate Fancheng principles through VB, which is also not conducive to students' deep understanding of the formation process of involutes.

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