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 provides a novel numerical control gear shaping machine demonstration instrument and a demonstration method thereof. The demonstration instrument comprises a frame, a gear printing mechanism and a horizontal feeding mechanism. The demonstration instrument finishes demonstration under a combined action of horizontal feeding movement of ground paper on the horizontal feeding mechanism, enveloping movement of a gear shaper cutter and the ground paper and up-and-down movement of the gear shaper cutter in the gear printing mechanism. The novel numerical control gear shaping machine demonstration instrument can change the center distance between two shafts, the number of teeth to be drawn, the drawing speed and the like through changing parameters at a PC end, thereby being capable of drawing a standard gear and a profile shifted gear and comparing similarities and differences of the two gears, also being capable of demonstrating an undercutting phenomenon. The novel numerical control gear shaping machine demonstration instrument is reasonable in overall arrangement of mechanisms, small in overall size, safe, reliable, and suitable for carrying out demonstration for students in an experiment course.

Novel numerical control gear shaping machine demonstration instrument and demonstration method thereof

The invention relates to product design and manufacturing of a gear generation instrument, in particular to an electronically-and-automatically-controlled semiautomatic gear generation instrument changed from a manually-operated vintage generation instrument. Electronic and automatic control is mainly adopted; as a stepper motor carries out driving, transmission of the semiautomatic gear generation instrument is stable and accurate; as a screw carries out spiral transmission, transferring accuracy is improved; accurate and convenient operation is achieved, and teaching is further facilitated accordingly. The semiautomatic gear generation instrument is convenient to machine, low in cost, suitable for mass production in a training aid factory, novel in idea, easy to operate and accurate and visual in effect, time is saved during operation, and the semiautomatic gear generation instrument has the broad application prospects in classroom teaching demonstration and experiment teaching operation of colleges and universities.

Semiautomatic gear generation instrument

The utility model provides a novel numerical control gear shaping machine demonstration instrument which comprises a frame, a gear printing mechanism and a horizontal feeding mechanism. Through the joint action of the horizontal feeding motion of upper ground paper of the horizontal feeding mechanism, the generating motion of a gear shaping cutter and ground paper and vertical motion of the gear shaping cutter in the gear printing mechanism, the demonstration instrument completes demonstration. According to the utility model, the parameter of a PC end can be changed; the center distance between two shafts, the number of drawn gears, the drawing speed and the like are changed; a standard gear and a deflection gear can be drawn, and similarities and differences of two gears are compared; an undercut phenomenon is demonstrated; the novel numerical control gear shaping machine demonstration instrument has the advantages of reasonable mechanism layout, small overall volume and being safe and reliable, and is suitable for carrying out demonstration for students in an experimental class.

Wang Qingjiu

Papers

Novel numerical control gear shaping machine demonstration instrument

Novel numerical control gear shaping machine demonstration instrument and demonstration method thereof