Difunctional cam path plotting instrument

Abstract

The invention provides a difunctional cam path plotting instrument which comprises a base and a support plate. A rotating handle is arranged at the side end of the support plate; the reverse side of the support plate is provided with a worm pair, a driving shaft, a bevel gear arranged at the end of the driving shaft, a connecting shaft, a bevel gear arranged at the end of the connecting shaft, a cylindrical gear and a rack; the obverse side of the support plate is provided with a simulating cam, a lower ejector rod, a screw-type quick replacing part, an upper ejector rod, a first connecting rod, a fixing rod, a second connecting rod, a vertical sliding block, linear sliding rails, a transverse paintbrush bar, a vertical paintbrush bar, a paintbrush and a transverse sliding block, and the transverse sliding block is connected with the rack. According to the plotting instrument, not only is plotting of a cam driven part displacement curve and an outer cam outline shape achieved, but also a fine adjusting function of the plotting instrument is achieved, the operability is good, and the demonstration property is high. In addition, the plotting instrument is compact in structure, small in size, low in mass, convenient to carry, suitable for any occasions and worthy of wide popularization.

Description

technical field [0001] The invention relates to a teaching instrument, in particular to a dual-function cam track plotter. Background technique [0002] The cam mechanism is generally a high-level mechanism composed of three components: the cam, the follower and the frame; the cam usually rotates continuously at a constant speed, and the follower is designed according to the application requirements to obtain a certain regular movement. The cam mechanism can realize complex motion requirements and is widely used in various automatic and semi-automatic mechanical devices. In the teaching of mechanical principles, the cam mechanism has always been the focus and difficulty in teaching. This part of knowledge is relatively abstract and difficult to understand. It is difficult for teachers to explain, and it is very difficult for students to understand. The existing cam track line measurement at home and abroad mainly includes the following two types: 1. In the existing teaching...

AI Technical Summary

Problems solved by technology

The invention adopts rack and pinion transmission to move the working platform left and right, and realizes the drawing of the displacement curve of the cam follower and the outline shape of the cam outer wheel, which is perceptual, but still has the following defects: the frame is divided into upper and lower layers , large volume, occupying space, and inconvenient to carry as a teaching aid; the drive mechanism of the workbench and the cam disc drive group are all driven by motors, the plotter cannot be manually operated, and the demonstration effect is poor, and the plotter depends on the power supply to work. The scope of use is limited

Images