The invention relates to a rotating machinery fault simulation platform. The simulation platform is a laboratory device for verification experiment and diagnosis experiment teaching of rotating machinery faults. The rotating machinery fault simulation platform comprises a sliding gear mechanism, a geneva wheel mechanism, a triple sliding gear mechanism, a lead screw nut mechanism and a combination mechanism formed by a worm gear and inner gearing incomplete gear. All the mechanisms are independent to one another, and power can be obtained through a gear pair formed by gears and power gears at the ends of the mechanisms. By means of the rotating machinery fault simulation platform, the problems that it is difficult to replace fault parts in the experiment process, and the experiment function is single and the teaching requirement cannot be met are mainly solved. The integrated building is conducted in combination with the teaching purpose, and the blank of rotating machinery type fault experiment in colleges and universities is filled; based on construction of machinery transmission and test devices of certain existing machinery type experiment platform, the reliability, practicability and usability of the novel rotating machinery fault simulation platform are improved beneficially, and the experiment platform is made to have good popularization value.

Rotating machinery fault simulation platform

The invention relates to a novel involute gear generation instrument which comprises a mounting base, wherein all parts are mounted on a round plate of the base; a central gear is mounted in the back center of the round plate of the base; three gears meshed with the central gear are circumferentially and uniformly distributed along the central gear; another three gears coaxial with the three gears are mounted on the front surface of the round plate of the base; a round paper tray and the central gear are coaxially mounted on the front surface of the base; relatively small gaps are formed between the round paper tray and the three gears mounted on the front surface of the base; the central gear is driven by a micro direct-current motor mounted on the rear surface of the round plate of the base in a supported manner; a dry battery set is used for supplying power; an intermittent rotation angle is controlled through a programmable singlechip microcomputer module; a switch and a start button are mounted on the base for operation convenience. According to the generation instrument, a standard tooth profile curve of positive and negative addendum gears can be described through the envelope curves of the tool profiles of the three standard gears mounted on the front surface of the round plate of the base; the instrument is simple in structure; acrylic boards can be selected and used as main body materials, so that the instrument is low in cost.

Novel involute gear generation instrument

The invention discloses a multi-class gear machining test bench, including a rack and a positioning part, a gear shaping part, a gear hobbing part and a gear milling part which are mounted on the rack, wherein the gear shaping part, the gear hobbing part and the gear milling part are arranged along the left side, the right side and the rear side of the rack. The multi-class gear machining test bench provided by the invention can be applied to universities of science and engineering, particularly to teaching demonstration of courses of mechanical principle, machining, equipment and the like of a mechanical major, and an undercutting phenomenon of a gear can be observed by a change of a center distance of a workpiece and a cutter in gear hobbing machining, and machining forming and the undercutting phenomenon of the gear are embodied, the multi-class gear machining test bench is simple in structure and facilitates observation and copying, previous conceptual knowledge of machining equipment of a student rises to perceptual knowledge through the instrument, and thus the multi-class gear machining test bench has a very important function for colleges and universities only having theoretical education and lacking practical teaching.

Multi-class gear machining test bench

The utility model discloses a new gear manufacturing experiment teaching device with integrated gear shaping and gear hobbing. A large motor is fixed to a rack, the large motor drives a first clutch shaft, the first clutch shaft drives a second clutch shaft and a third clutch shaft, a small motor drives the third clutch shaft, the second clutch shaft drives a four-bar mechanism, the four-bar mechanism drives a shaping cutter shaft to move in a D-shape track, the third clutch shaft drives a hobbing cutter shaft and a worm gear reducer, the worm gear reducer drives a slip gear speed changer and the shaping cutter shaft, the slip gear speed changer drives a horizontal slip transmission device, the horizontal slip transmission device drives a blank shaft to move in a rotary manner, the blank shaft drives an axial feeding device to move in a linear manner in the vertical direction, and a radial feeding device drives the blank shaft to move in a linear manner in the horizontal direction. When students use the experiment instrument, principles of the cutting of gears with two methods can be visually compared and learned, and the undercutting phenomenon and the modification correction method can be learned and explored.

Zhu Lingfeng

Papers

New gear manufacturing experiment teaching device with integrated gear shaping and gear hobbing