scholarly journals PERANCANGAN SISTEM PENGGERAK TRAINER TRANSMISI MANUAL 5 PERCEPATAN TOYOTA KIJANG

2019 ◽  
Vol 4 (2) ◽  
pp. 81-84
Author(s):  
Mohammad Munib Rosadi ◽  
Retno Eka Pramitasari ◽  
Ali Hasbi Ramadani
Keyword(s):  
Student Learning ◽  
Type A ◽  
Drive System ◽  
Driving Mechanism ◽  
Drive Mechanism ◽  
System A ◽  
Machine Element ◽  
System Mechanism

The need for learning media in the Machine Element II course makes the transmission trainer to be immediately presented in order to become a means of supporting student learning. In a transmission trainer system a driving mechanism is needed so that the transmission can rotate. The drive mechanism must be reliable to ensure the transmission can rotate without constraints. Therefore, it is necessary to design and calculate in designing the transmission driving mechanism. The purpose of this study was to determine the design and calculation of the transmission trainer drive system. The design results show that the required motor specs are motors with 250 watts of power, driven pulley diameter 50 mm, driven pulley diameter 250 mm, distance between pulley axes is 335 mm. use v-belt type A with a length of 1175 mm. this drive system mechanism will produce a final torque of 393.01 kg.mm which is considered good because it is higher than the planned torque that is 325,85 kg.mm.

scholarly journals Research and Test of Three-Pulley Noncircular Synchronous Pulley Transmission Mechanism with Minimum Slack

2021 ◽  
Vol 34 (1) ◽  
Author(s):  
Jianneng Chen ◽  
Xincheng Sun ◽  
Chuanyu Wu ◽  
Dadu Xiao ◽  
Jun Ye
Keyword(s):  
Optimization Design ◽  
Simulation Analysis ◽  
Transmission Mechanism ◽  
Driving Mechanism ◽  
Belt Drive ◽  
Drive Mechanism ◽  
Automatic Optimization ◽  
Pitch Curve ◽  
Synchronous Belt Drive ◽  
Belt Transmission

AbstractThe noncircular synchronous belt drive mechanism has demonstrated certain achievements and has been used in special fields. Research regarding noncircular synchronous belt drive mechanisms has focused on optimization design and kinematic analysis in China, whereas two pulley noncircular synchronous belt transmissions have been developed overseas. However, owing to the noncircular characteristics of the belt pulley, the real-time variation in the belt length slack during the transmission of the noncircular synchronous belt is significant, resulting in high probabilities of skipping and vibration. In this study, a noncircular tensioning pulley is added to create a stable three-pulley noncircular synchronous belt driving mechanism and a good synchronous belt tensioning, with no skipping; hence, the non-uniform output characteristic of the driven pulley is consistent with the theoretical value. In the circular noncircular noncircular three-pulley noncircular synchronous belt mechanism, the pitch curve of the driving synchronous belt pulley is circular, whereas those of the driven synchronous belt and tensioning pulleys are noncircular. To minimize the slack of the belt length of the synchronous belt and the constraint of the concavity and circumference of the tensioning pulley, an automatic optimization model of the tensioning pulley pitch curve is established. The motion simulation, analysis, and optimization code for a three-belt-pulley noncircular synchronous belt drive mechanism is written, and the variation in belt length slack under different speed ratios is analyzed based on several examples. The testbed for a circular–noncircular–noncircular three-pulley noncircular synchronous belt transmission mechanism is developed. The test shows that the three-pulley noncircular synchronous belt drives well. This study proposes an automatic optimization algorithm for the tensioning pulley pitch curve of a noncircular synchronous belt transmission mechanism; it yields a stable transmission of the noncircular synchronous belt transmission mechanism as well as non-uniform output characteristics.

scholarly journals Optimization of presser foot and needle bar driving mechanism based on the complex method principle

2021 ◽  
Vol 16 ◽  
pp. 155892502110603
Author(s):  
Lei Zhang ◽  
Zhien Zhang ◽  
Jianneng Chen ◽  
Shouzhi Huang ◽  
Yibin Zhai
Keyword(s):  
Research And Development ◽  
High Speed ◽  
Pause Time ◽  
Complex Method ◽  
Driving Mechanism ◽  
Drive Mechanism

The rod presser foot and needle bar driving mechanism of the embroidery machine cannot achieve accurate parking time and position at high speed, which limits the development of high speed embroidery machine and make the quality of embroidery decline. Aiming at solving this bottleneck problem, the characteristics of the embroidery machine presser foot and needle bar driving mechanism based on analyzing the mechanism kinematics is developed. These characteristics and influences of each linkage parameters on the presser foot parking time and position are analyzed. Six main parameters are selected to optimize by using the complex method. Taking the parking position and linkage parameters as constraints, the parameters of the main linkages was optimized in order to obtain the maximum parking time of the presser foot mechanism. The results show that the optimized parameters is more reasonable and effective, the pause time of the presser foot mechanism is increased by 15.5%, and the parking position of the embroidery machine is at 100° ± 0.5° as required by the technological requirements, which satisfies the requirements of the coordinate movement of the needle bar-presser foot drive mechanism of the high-speed embroidery machine. The study also provides a method reference for the follow-up high-speed embroidery machine research and development.

The Design of the Drive System of the Crank Underdrive Quick Presses

2013 ◽  
Vol 584 ◽  
pp. 189-193
Author(s):  
Mao Hua Xiao ◽  
Fei Yang ◽  
Zun Mang Ke ◽  
Si Hong Zhu ◽  
Deng Song Xiao
Keyword(s):  
Optimization Design ◽  
Drive System ◽  
Transmission Mechanism ◽  
Reliable Operation ◽  
Preliminary Calculation ◽  
Drive Mechanism ◽  
Pressure Angle ◽  
Nominal Pressure ◽  
Punching Process ◽  
Crank Mechanism

Based on production needs, a main transmission mechanism of underdrive speed press was designed in this paper. The design of the main transmission mechanism is the improvements and alternative of sine institutions slider-crank mechanism made. Underdrive and dual slider mechanism were designed, in order to achieve the presses punching process. The nominal pressure angle and the nominal torque were calculated. A preliminary calculation and design of the crankshaft, bearings, slider of the main drive mechanism. Ensure reliable operation and to provide a basis for the optimization design.

Modelling of the rotational vibrations of the engine front-end accessory drive system: a generic method

2017 ◽  
Vol 231 (13) ◽  
pp. 1780-1795 ◽  
Author(s):  
Xiao Feng ◽  
Wen-Bin Shangguan ◽  
Jianxiang Deng ◽  
Xingjian Jing ◽  
Waizuddin Ahmed
Keyword(s):  
High Efficiency ◽  
Equations Of Motion ◽  
Drive System ◽  
Slip Ratio ◽  
System A ◽  
Runge Kutta Method ◽  
Front End ◽  
Rotational Vibration ◽  
Vibration Responses ◽  
Drive Systems

To investigate the rotation vibration dynamics of the pulleys and the tension arms, and to estimate the vibrations of the belts and the slip ratio between the belt and the pulleys in the engine front-end accessory drive systems, a systematic modelling and analytical method is proposed for engine front-end accessory drive systems; this can be used for modelling engine front-end accessory drive systems with different layouts and different numbers of tensioners, including automatic and fixed tensioners. In the modelling, the rotational pulleys are classified as fixed-axis pulleys and moveable-axis pulleys (such as the pulley in the tensioner). Moreover, the belt spans are classified as the belt spans between the two fixed pulleys, and the belt spans adjacent to the pulley of a tensioner. The equations of motion for each type of pulley and the tension calculation equations for each type of belt span are developed. In this way, the equations of motion for all the pulleys and the tensioner arms can be obtained easily, irrespective of the layout of the tensioners. To obtain the dynamic rotational vibration responses of an engine front-end accessory drive system by the conventional Runge–Kutta method, high-efficiency algorithms or methods are also proposed for calculating the tangent-point coordinates between a belt and the adjacent pulleys and the belt length of the contact arc on one pulley. The proposed modelling and analysis methods are validated by modelling different layouts of the engine front-end accessory drive systems with different types and numbers of tensioners, and also by comparisons between the calculated dynamic vibration responses of the pulleys and the belts and the real experimental data.

scholarly journals Development of a Fish-Like Robot with a Continuous and High Frequency Snap-Through Buckling Mechanism Using a Triangular Cam

2021 ◽  
Vol 33 (2) ◽  
pp. 400-409
Author(s):  
Daisuke Nakanishi ◽  
Shoya Kobayashi ◽  
Kiichi Obara ◽  
Shotaro Matsumura ◽  
Yuichiro Sueoka ◽  
...  
Keyword(s):  
Thin Plate ◽  
Swimming Speed ◽  
High Frequency ◽  
Single Peak ◽  
Driving Mechanism ◽  
Drive Mechanism ◽  
Elastic Thin Plate ◽  
The Relationship

This study focuses on the high maneuverability of fish in water to design a fish-like robot via snap-through buckling. The aim of this study is to improve swimming speed by increasing the frequency at which snap-through buckling occurs. Here, we propose a novel drive mechanism using a triangular cam that can continuously generate snap-through buckling at a high frequency. In addition, we developed a fish-like robot via the proposed mechanism and analyzed the influence of the frequency of snap-through buckling on swimming speed. The results obtained indicate that swimming speed is improved and that the relationship between frequency and swimming speed exhibits a single peak. In other words, the swimming speed is reduced when the frequency is significantly increased. We also determined that swimming speed was improved using a wide elastic thin plate as the driving mechanism.

scholarly journals Self-weight Balance Design of Portal Crane Boom

2021 ◽  
Vol 267 ◽  
pp. 01056
Author(s):  
Yi Huang ◽  
Haixia Zeng ◽  
Yan Chen
Keyword(s):  
Energy Consumption ◽  
Center Of Gravity ◽  
Drive System ◽  
The Self ◽  
Maximum Height ◽  
Balance Design ◽  
Drive Mechanism ◽  
Balance System ◽  
Extra Energy ◽  
Portal Crane

During the luffing of the portal crane, the height changing of the center of gravity of the boom needs to consume extra energy, which not only wastes energy, but also makes the luffing drive system need to use a larger motor. This paper uses the lever-movable counterweight balance method to design the self-weight balance of the portal crane, and verifies that the designed jib self-weight balance system meets the requirements of the maximum height deviation, unbalanced torque and comprehensive unbalanced torque by evenly taking points. The power and unnecessary energy consumption of the luffing drive mechanism are reduced.

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