Profile design of noncircular belt pulleys

Abstract

During design of the envelope of a noncircular belt pulley one should take into account several conditions resulting from kinematics and geometry of the uneven-running strand transmission. Design of proper values of pitches for a belt pulley, which enable good cooperation between the belt pulley and the belt, should be carefully done. In available Polish literature and catalogues offered by belt manufacturers, one can find only detailed dimensions of belts with a trapezoidal profile. Information on other profiles is insufficient for full description of geometrical features of belt pulley teeth as well as to design tools for machining belt pulleys. Manufacturers of belt pulleys and belts give only necessary data to submit a purchase order. The paper presents a digitization process (scanning) of geometry of the envelope of circular belt pulleys with non-standard profiles; this scanning has been done with the application of coordinate measuring machines. The obtained information on geometrical features of tooth profiles has been numerically analysed. As a result of this analysis, the mathematical description has been obtained. Finally, noncircular belt pulleys with different tooth profiles have been designed and manufactured.

Simulations CAE of wood pellet machine

“…Constructing Surface Mining Machinery and vertical vehicle non-stationary random vibrations [19][20][21]. Computer methods are also successfully used for design verification and for determining vibro-acoustic parameters of gears, machine drives [22][23][24][25]. To analyze the granulation and agglomeration aspects, the SolidWorks Flow Simulation module was used.…”

Wear evaluation study of the multiple grooved pulleys with optical method

“…Since the very beginning of applying different kinds of belts and pulleys a research has started in order to both increase the range of transmitted loads as well to uprate their durability and wear resistance [2][3][4][5][6][7].…”

The application of the optical system ATOS II for rapid prototyping methods of non-classical models of cogbelt pulleys

“…The Rapid Prototyping techniques were used to create an example of construction solution such as uneven-running strand transmissions [2] or cog belt transmissions with periodically variable transmission ratios [3]. Such transmissions allow to obtain periodically variable kinematic characteristics during one cycle of transmission by using elliptical cogbelts or pulleys ( Fig.…”

“…The issues concerning the geometric characteristics of such transmissions are accessible in papers [3,4], whereas the detailed description of possible manufacturing methods was characterised and exemplified in papers [5][6][7].…”