A method for designing a planetary gearset meeting one or more design targets is described. Initially, a size and ratio of the planetary gear set, and the number of planet gears for the planetary gearset is specified. All valid combinations of tooth numbers and planet numbers that satisfy one or more constraints are then calculated. From these, a starting combination is selected and a value for a design target for the gear set is calculated. One or more of the macro-geometry parameters are modified, and the macrogeometry parameters are chosen such that the positive effects of one macrogeometry parameter on the design target counteract any negative effects of another macrogeometry parameter. In this way, a design for planetary gearset meeting the one or more design targets is produced. Also disclosed is a method additionally calculating a sideband distribution resulting from the selected combination. The side band distribution is compared with a design target for sideband distribution and parameters are varied as necessary to achieve the required design.

A method is provided for producing gears to balance counteracting gravity moment and a torque equilibrator across an elevation range. The method includes assigning a value to summation of pitch radii of the first and second non-circular gears; calculating a torque for both the non-circular gears for an angle within the elevation range; calculating a first pitch radius of the first non-circular gear by the gravity moment and the torsion equilibrator; calculating a second pitch radius of the second non-circular gear from the summation; and fabricating the non-circular gears based on the first and second pitch radii.

The present invention relates to a method for the profile generation of involute-based toothed shaft connections, comprising: determination of a circle described by the reference diameter d.sub.B′, distance-based generation of the shaft top circle using the reference diameter distance A.sub.dB, the shaft top circle being the quasi first element of the shaft profile; distance-based generation the hub top circle using the effective touching height h.sub.w, distance-based determination of the touching point between the shaft tooth flank and the shaft root fillet using the shaft form oversize of the reference profile C.sub.FP1 or the shaft form oversize C.sub.FP1 generation of the shaft root fillet, the shaft reference profile being already completely generated by means of this step in the case of full filleting of the shaft; constant-tangent generation of the shaft root circle for shaft root filleting, this step being required only in the case of partial filleting; and obtainment of the shaft profile.

Systems and methods are provided for pump systems that deliver optimized performance and efficiency. A method includes selecting a pump for the pump system. A maximum operating speed of the pump is determined, and its torque requirements are evaluated. A motor is selected to meet the torque requirements and a speed target is set for the motor. A speed reducer is sized for operation of the motor at the speed target and operation of the pump below the maximum speed, and the motor is coupled with the pump through the speed reducer.

Embodiments of the invention are shown in the figures, where a method is presented for designing a component, including designing or receiving a model of the component; determining at least one mode shape of at least a portion of the model; redesigning the model based on the determined at least one mode shape to obtain a redesigned model of the component; and manufacturing the component in accordance with the redesigned model.

A reducer for high precision control includes a pin gear housing and two-stage reduction components disposed therein: a first-stage reduction component including an input shaft, a sun gear and a planet gear; and a second-stage reduction component including 2-3 eccentric shafts distributed uniformly, cycloidal gears, a pin, a left rigid disk and a right rigid disk, and bearings, wherein the cycloidal gears are supported by bearings on two eccentric sections of the eccentric shaft, shaft extensions on two sides of the eccentric section of the eccentric shaft are supported by bearings on the left rigid disk and the right rigid disk, and the left rigid disk and the right rigid disk are supported by bearings in inner holes of two sides of the pin gear housing.

The present invention is a variable-ratio line gear mechanism. The mechanism forms a transmission pair consisting of a driving line gear and a driven line gear, of which axes intersect at an arbitrary angle. Transmission is generated by point contact meshing movement of line teeth between the driving line gear and the driven line gear. A contact curve of the line tooth is designed in accordance with space conjugate curve meshing theory, and the designing equation is divided into an equal transmission ratio part and a variable transmission ratio part. The equal transmission ratio part provides a uniform transmission, and the variable transmission ratio part makes the transmission ratio smoothly transit. The line gear mechanism is able to provide periodically transmission with variable transmission ratio, to provide a plurality of transmission ratios during a movement period of the driven line gear, and to enable smooth transitions between respective transmission ratios in accordance with movement rules.

A system and method for determining surface contact fatigue life may use a finite element method to determine when components, such as a power transmission component, may fail in operation. The method may generate a finite element model based on the material parameters related to a power transmission component, generate a surface pressure time history for a loading event based on one or more loading parameters, determine, based on the surface pressure time history for a loading event, a finite element solution that describes stress in the grain structure, calculate damage in the finite element solution using a damage model, and determine whether a damage threshold is exceeded.

A gear system includes a carrier having a first portion and a separate, second portion and a plurality of pin shafts extending from the first portion of the carrier. Each of the plurality of pin shafts includes a first end and a second end. As such, the first ends are integrally formed with the first portion of the carrier. The first and second portions are arranged on opposing sides of the plurality of pin shafts and are spaced apart such that the first and second portions do not contact each other. Further, the second portion of the carrier defines an end plate that is secured to the second ends of the plurality of pin shafts. The gear system also includes a plurality of gears mounted to the plurality of pin shafts, with each of the plurality of gears arranged so as to rotate around one of the plurality of pin shafts.

A tooth surface shape design support device for supporting design of a tooth surface shape of a gear includes a principal component shape data acquisition unit configured to acquire a plurality of principal component shape data obtained by performing principal component analysis on a tooth surface shape sample data group including a plurality of tooth surface shape sample data indicating samples of the tooth surface shape, and a tooth surface shape evaluation unit configured to evaluate a tooth surface shape defined by using the plurality of principal component shape data acquired by the principal component shape data acquisition unit.