DOCSLIB.ORG

Basic Gearbox and Coupling TORK Is the Leading Manufacturer of Mechanical Power Transmission Equipments in China and Would Be the World TORK Brief

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Basic Gearbox and Coupling TORK Is the Leading Manufacturer of Mechanical Power Transmission Equipments in China and Would Be the World TORK Brief Basic Gearbox and Coupling TORK is the leading manufacturer of Mechanical Power Transmission equipments in China and would be the world TORK Brief SHANGHAI TORK DRIVE EQUIPMENT CO.,LTD is one of a enterprise who engaging in research, manufacture and sales of R helical gearbox,K helical bevel gearbox,F parallel shaft gearbox ,S helical-worm gearbox,X cycloidal gearbox,H,B high power gearbx and planetary gearbox and customized gearbox.TORK company's production base covers an workshop area of 45000M2 with advanced and complete inspection equipments. the company owns domestic and oversea advanced processing center, all kinds of digital control machines and high precision gear grinding machines; owns whole Gear Error Measure Instrument, Gear Jumpiness Measure Instrument, Gear Worm double Measure Instrument and other advanced instruments. Recently years, TORK company has devoted to research, development and digital design of domestic and oversea transmission equipment, it supplied excellent design scheme for of all kinds of transmission industry. TORK products are widely applied in many fields, such as environment protection, metallurgy, mine, storage logistics, beer, drink, lifting transportation, baccy light industry, solid parking, rubber and plastic and etc. Meanwhile, TORK products also are exported to Europe,America,Asia- southeast,Middle east,Australia.etc and other countries and area .. 2015 - Partners TORK equipments for gearbox Gear inspection machine Torque test machine 3D measuring equipment NILES Gear grinding machine CNC Hobbing machine Heat treatment machine TORK workshops Development of Gear Units Essential smaller surfaces Essential smaller weights Bevel gear reducers with a nominal torque of approx. 23 000 Nm: 1954 to Present Spur Gearing •Low Load Carrying capability •Parallel offset shafts. •Noise •Usually Open gears •Easy to produce •Usually from Cast Material •Wear & Lubrication problems •Efficiency – less than 95% per stage. Spur Gearing - Applications Helical Gearing •Good Load Carrying capability •Parallel offset shafts. •Low Noise •Usually Enclosed gears •Usually from Heat Treatable Material •Good wear resistance. •Efficiency up to 99% per stage. •Axial thrust taken by bearings. •Max Ratio 5 : 1 per stage Helical Gearing - Applications Typical design of TORK gear units output shaft bearing cover 16MnCr 5 or C60 housing GG 25 shaft seals antifriction bearings gears 20CrNi2MoA Pinion Shafts 20CrNi2MoA Double Helical Gearing •Good Load Carrying capability •Parallel offset shafts. •Sometimes fabricated gear •Usually from Heat Treatable Material •Minimizes axial thrust •Difficult to accurately produce. •Efficiency up to 99% per stage. •Max Ratio 5 : 1 per stage Bevel Gearing •Good Load Carrying capability •Turns the motion thru 90 deg. •Low Noise •Usually Enclosed gears •Usually from Heat Treatable Material •Good wear resistance. •Efficiency up to 98% per stage. •Max. Ratio 5 : 1 Bevel Helical Gearing •Good Load Carrying capability •Turns the motion thru 90 deg. •Low Noise •Usually Enclosed gears •Usually from Heat Treatable Material •Good wear resistance. •Efficiency up to 98% for the bevel and 99% per stage for the helical gears. Bevel Helical Gearing - Applications Planetary Gearing •Good Load Carrying capability •Input/output shafts in line. •Ratios of up to 6 : 1 in each stage •Compact size for high torques. •Enclosed gears •Good wear resistance. •Efficiency up to 97% per stage. •Used in combination with other types of gearing particularly for final stage. Planetary Gearing - Applications Worm Gearing •Good Load Carrying capability •Input/output shafts at right angles. •Ratios of up to 60 : 1 in each stage •Compact size for high ratios. •Un economic for high torques. •Low Noise. •Efficiency up to 90% per stage. •Used in combination with other types of gearing. Worm Gearing - Applications Power Split Gearing •Good Load Carrying capability •Compact size for high torques, since the expensive final gear is driven by 2 or more pinions. •Enclosed gears •Good wear resistance. •Efficiency up to 97% per stage. •Competitive Pricing Power Split Gearing - Applications Cement Factory – Kiln Drive Sugar Mill – Final Drive Hydraulic Drives •Variable speed capabilities •Power pack can be located away from the drive. •Suitable for a large variation of torques •Compact size. •Relies on quality of oil. •Lends itself to computer control. •Poor efficiency. Approx.70 to 80%. •Ease of mounting Hydraulic Drives - Applications Sugar Mill – Pressure Feeder Drives Sugar Mill – Main Drive Cycloidal Drive • Compact Drive - particularly for high ratios •Ratios up to 87:1 in 1 stage •Not available for high powers •Not available in right-angle design •Requires special excentric bearing •Efficiency up to 92% per stage Cyclo Drive - Applications What Ever Your Size, We Have It ! Hydraulic Drives What is Gear box…? What is the Purpose of Gearbox..? What are the products of TORK drive R Helical K Helical Bevel F Parallel shaft X cycloidal B Helical bevel H parallel shaft P planetary Others and customized gearbox For Complete Choosing Gearmotor and Specification , we will see : Gear Motor Configurator H,B high power gearbox basic feature Housing material : Grey cast Iron HT250(GG-20) or Fabricated steel splite housing for all sizes of H1SH&≥size13 of other types Housing hardness : HBS 190-240; Gear material : 20GrNi2MoA(18CrNiMo7-6) Alloy steel. Surface hardness of gears : 60-63 HRC Gear core hardness : 33-40 HRC Input / Output shaft material : 42CrMo alloy steel; Input / Output shaft hardness : HRC25-30; Heat treatment : Tempering, Carburizing, Quenching. etc.; Machining precision of gears : Accuracy of Grinding ≤ DIN6 or ≥AGMA11 Pressur angle :20° Helical angle varies between : 10°-13° Noise : 65 db to 80 db Temp. rise : 35 °C to 45 °C Efficiency : 92%~96% (Depends on the transmission stage) ; Temp. rise (Oil) : 45°C Max. Bearing : ZWZ---Make, China H,B type Designations H Helical gear unit ,Type H2SH TORK Mechanical drives Indonesia B Helical Bevel gear unit ,Type B3SH H Helical gear unit ,Type B3SH TORQUE TORQUE is the most important factor in Mechanical Power Transmission TORQUE has relationship between input POWER,input SPEED,RATIO M2=9550*P1*i/n1 M2=torque(N.m) P1=input power(kw) n1=input speed(rpm) i=gearbox ratio Absorbed Power vs Rated Power You can put any size of motor on a drive BUT it will only produce the power required by a machine. With a S1 motor – it is designed to produce TWICE the RATED POWER when it starts and can maintain that POWER for a period of 2 minutes. Our Gear units also have this additional safety - Already built in Motors are also designed to cope with SHOCK LOADS – up to 5 times in any one hour period. Our Gear units also have this additional safety - Already built in TORK Mechanical Drives in the Sugar Industry TORQUE REQUIRED/ABSORBED BY MILL Power required by mill for 4000 TCD with 13.5% Fiber Content = 365.20 kW Mill Speed required to mill 4000 TCD = 4 rpm Motor speed 991 rpm(Nominal) = 6 pole Torque (Nm) = Power (kW) x 9550 / n (rpm) Torque Nm = 365.20 x 9550 / 4 = 871.915 Nm SERVICE FACTOR (Sf) Therefore the SERVICE FACTOR 2 = 871.915 x 2 = 1.743.830 Nm Therefore the SERVICE FACTOR 1,7 = 871.915 x 1,7 = 1.482.255 Nm (based on AGMA standard) TORK Mechanical Drives in the Sugar Industry Additional Assurance TORK have additional Taper Roller Bearings to take the THRUST LOADS from the tail bar. Larger output shaft diameters mean larger bearings. Input and Output bearings are protected from abrasion by bagase dust by the use of grease filled labyrinth seals. One of the competitors housing is fabricated steel – flexible and less shock/vibration absorbsion than a casting from GG 25. TORK Mechanical Drives in the Sugar Industry Thrust Bearings and Solid Square Output Shaft (Safety & Protected) Testing and Warranty Each TORK gearbox will be commissioning for 4 hours after assembly, make sure no noise and every parts work well during these time. Each TORK product is guaranteed against defects in design, manufacturing, material and labor during 12 months, counted from starting date, or 18 months counted from the date of shipment, whichever comes earlier. If product has quality problem within guarantee .TORK promising to offer repair parts, technical supports or change product at charge free. COMMITMENT Since from our company established , we constant to provide the best gearbox products and the most comfortable service .That is the reason we have achieved a lot of compliment and high reputation no matter in the China market or International market. "The quality first, the prestige first" is our company objective! "Goes all out, devotes to innovate" is our company eternal subject, customers' need is our pursue, our company have been hoping to have sincerely cooperation with the domestic and all the world friends to reach communal development! shanghai tork drive equipment Co.,ltd No 438,PuYin road,Xin Nong Zhu Jing town,Jin Shan district ShangHai city,China . www.torkdrive.com Tel:+86 21 37283520 Fax:+86 21 37283521.
Load more

Recommended publications
  • Design and Control of a Large Modular Robot Hexapod
    Design and Control of a Large Modular Robot Hexapod Matt Martone CMU-RI-TR-19-79 November 22, 2019 The Robotics Institute School of Computer Science Carnegie Mellon University Pittsburgh, PA Thesis Committee: Howie Choset, chair Matt Travers Aaron Johnson Julian Whitman Submitted in partial fulfillment of the requirements for the degree of Master of Science in Robotics. Copyright © 2019 Matt Martone. All rights reserved. To all my mentors: past and future iv Abstract Legged robotic systems have made great strides in recent years, but unlike wheeled robots, limbed locomotion does not scale well. Long legs demand huge torques, driving up actuator size and onboard battery mass. This relationship results in massive structures that lack the safety, portabil- ity, and controllability of their smaller limbed counterparts. Innovative transmission design paired with unconventional controller paradigms are the keys to breaking this trend. The Titan 6 project endeavors to build a set of self-sufficient modular joints unified by a novel control architecture to create a spiderlike robot with two-meter legs that is robust, field- repairable, and an order of magnitude lighter than similarly sized systems. This thesis explores how we transformed desired behaviors into a set of workable design constraints, discusses our prototypes in the context of the project and the field, describes how our controller leverages compliance to improve stability, and delves into the electromechanical designs for these modular actuators that enable Titan 6 to be both light and strong. v vi Acknowledgments This work was made possible by a huge group of people who taught and supported me throughout my graduate studies and my time at Carnegie Mellon as a whole.
    [Show full text]
  • Transmission Performance Analysis of RV Reducers Influenced by Profile
    applied sciences Article Transmission Performance Analysis of RV Reducers Influenced by Profile Modification and Load Hui Wang, Zhao-Yao Shi *, Bo Yu and Hang Xu Beijing Engineering Research Center of Precision Measurement Technology and Instruments, College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing 100124, China; [email protected] (H.W.); [email protected] (B.Y.); [email protected] (H.X.) * Correspondence: [email protected]; Tel.: +86-139-1030-7299 Received: 31 August 2019; Accepted: 25 September 2019; Published: 1 October 2019 Featured Application: A new multi-tooth contact model proposed in this study provides an effective method to determine the optimal profile modification curves to improve transmission performance of RV reducers. Abstract: RV reducers contain multi-tooth contact characteristics, with high-impact resistance and a small backlash, and are widely used in precision transmissions, such as robot joints. The main parameters affecting the transmission performance include torsional stiffness and transmission errors (TEs). However, a cycloid tooth profile modification has a significant influence on the transmission accuracy and torsional stiffness of an RV reducer. It is important to study the multi-tooth contact characteristics caused by modifying the cycloid profile. The contact force is calculated using a single contact stiffness, inevitably affecting the accuracy of the result. Thus, a new multi-tooth contact model and a TE model of an RV reducer are proposed by dividing the contact area into several differential elements. A comparison of the contact force obtained using the finite element method and the test results of an RV reducer prototype validates the proposed models.
    [Show full text]
  • Novel Designs and Geometry for Mechanical Gearing
    Novel Designs and Geometry for Mechanical Gearing by Erasmo Chiappetta School of Engineering, Computing and Mathematics Oxford Brookes University In collaboration with Norbar Torque Tools ltd., UK. A thesis submitted in partial fulfilment of the requirements of Oxford Brookes University for the degree of Doctor of Philosophy September 2018 Abstract This thesis presents quasi-static Finite Element Methods for the analysis of the stress state occurring in a pair of loaded spur gears and aims to further research the effect of tooth profile modifications on the mechanical performance of a mating gear pair. The investigation is then extended to epicyclic transmissions as they are considered the most viable solution when the transmission of high torque level within a compact volume is required. Since, for the current study, only low speed conditions are considered, dynamic loads do not play a crucial role. Vibrations and the resulting noise might be considered negligible and consequently the design process is dictated entirely by the stress state occurring on the mating components. Gear load carrying capacity is limited by maximum contact and bending stress and their correlated failure modes. Consequently, the occurring stress state is the main criteria to characterise the load carrying capacity of a gear system. Contact and bending stresses are evaluated for multiple positions over a mesh cycle of a contacting tooth pair in order to consider the stress fluctuation as consequence of the alternation of single and double pairs of teeth in contact. The influence of gear geometrical proportions on mechanical properties of gears in mesh is studied thoroughly by means of the definition of a domain of feasible combination of geometrical parameters in order to deconstruct the well-established gear design process based on rating standards and base the defined gear geometry on operational and manufacturing constraints only.
    [Show full text]
  • Rogue Rotary
    2017 Rogue Rotary MODULAR ROBOTIC ROTARY JOINT DESIGN SEAN MURPHY JACOB TRIPLET TYLER RIESSEN Table of Contents 1 Introduction .......................................................................................................................................... 4 1.1 Problem Statement ....................................................................................................................... 4 2 Background ........................................................................................................................................... 5 2.1 Researching the Problem .............................................................................................................. 5 2.2 Researching Existing Solutions ...................................................................................................... 8 3 Objectives............................................................................................................................................ 10 3.1 Modularity ................................................................................................................................... 11 3.1.1 Time to assemble new configuration: ................................................................................. 11 3.1.2 Time to re-configure program: ........................................................................................... 11 3.1.3 Dynamic Range: .................................................................................................................. 11 3.2 Target
    [Show full text]
  • Modelling the Meshing of Cycloidal Gears
    DOI 10.1515/ama-2016-0022 acta mechanica et automatica, vol.10 no.2 (2016) MODELLING THE MESHING OF CYCLOIDAL GEARS Jerzy NACHIMOWICZ*, Stanisław RAFAŁOWSKI* *Bialystok University of Technology, Department of Mechanical Engineering, Faculty of Mechanical Engineering, ul. Wiejska 45C, 15-351 Białystok, Poland [email protected], [email protected] received 16 June 2015, revised 11 May 2016, accepted 16 May 2016 Abstract: Cycloidal drives belong to the group of planetary gear drives. The article presents the process of modelling a cycloidal gear. The full profile of the planetary gear is determined from the following parameters: ratio of the drive, eccentricity value, the equidistant (ring gear roller radius), epicycloid reduction ratio, roller placement diameter in the ring gear. Joong-Ho Shin’s and Soon-Man Kwon’s article (Shin and Know, 2006) was used to determine the profile outline of the cycloidal planetary gear lobes. The result was a scatter chart with smooth lines and markers, presenting the full outline of the cycloidal gear. Key words: Cycloidal Drive, Modelling, Profile, Planetary Gear, Gear 1. INTRODUCTION and Song, 2008). Therefore, it was necessary to demonstrate the process of modelling a toothed gear with a cycloidal profile. Analysis of the function of the cycloidal transmission indicates that it is a rolling transmission, in which all elements move along a circle (Rutkowski, 2014). Because of its specific design, cy- 2. EQUATIONS DESCRIBING THE PROFILE cloidal gears have many advantages, such as: a wide range OF A CYCLOIDAL GEAR single stage reductions (even up to 170), making the drive rela- tively small, high mechanical efficiency, and silent operation.
    [Show full text]
  • Gears & Gear Drives
    GEARS AND GEAR DRIVES GEAR TYPES .....................................................A145 GEAR TYPES 99%. Some sliding does oc- GEAR BASICS ...................................................A153 cur, however. And because ears are compact, SPEED REDUCERS ............................................A158 contact is simultaneous positive-engagement, across the entire width of G power transmission SELECTING GEAR DRIVES................................A162 the meshing teeth, a contin- elements that determine ANALYZING GEAR FAILURES...........................A168 uous series of shocks is pro- the speed, torque, and di- duced by the gear. These rection of rotation of driven rapid shocks result in some machine elements. Gear types may be objectionable operating noise and vi- grouped into five main categories: bration. Moreover, tooth wear results Spur, Helical, Bevel, Hypoid, and from shock loads at high speeds. Noise Worm. Typically, shaft orientation, ef- and wear can be minimized with ficiency, and speed determine which of proper lubrication, which reduces these types should be used for a partic- tooth surface contact and engagement ular application. Table 1 compares shock loads. these factors and relates them to the specific gear selections. This section on gearing and gear drives describes the major gear types; evaluates how the various gear types are combined into gear drives; and considers the principle factors that affect gear drive selection. Spur gears Spur gears have straight teeth cut Figure I — Involute generated by parallel to the rotational axis. The unwrapping a cord from a circle. tooth form is based on the involute curve, Figure 1. Practice has shown the tool traces a trochoidal path, Fig- Figure 2 — Root fillet trochoid generated that this design accommodates ure 2, providing a heavier, and by straight tooth cutting tool.
    [Show full text]
  • Design of Silent, Miniature, High Torque Actuators
    Design of Silent, Miniature, High Torque Actuators by John Henry Heyer III Bachelor of Science in Mechanical Engineering University of Rochester, 1995 SUBMITTED TO THE DEPARTMENT OF MECHANICAL ENGINEERING IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF MASTER OF SCIENCE IN MECHANICAL ENGINEERING AT THE MASSACHUSETTS INSTITUTE OF TECHNOLOGY MAY 1999 © 1999 Massachusetts Institute of Technology. All Rights Reserved. A uth o r ............................................... , ,.,v .... ... ............ De~p~9nIf Mechanic ygineering / ~May 7,1999 Certified by ............. Woodie C. Flowers Pappalardo Professor of Mechanical Engineering The supervisor C ertified by ...................................... ................ ....... David R. Wallace Ester and Harold Edgerton Assistant Professor of Mechanical Engineering .,- )Thesis Supervisor A ccepted by .............................................. .. ........................ Ain A. Sonin Professor of Mechanical Engineering Chairman, Department Committee for Graduate Students MASSACHUSETTS INSTITUTE MASSACHUSETTS INSTITUTE OF TECHNOLOGY OF TECHNOLOGY LIRLIBRARIES E 1LIBRARIES Design of Silent, Miniature, High Torque Actuators by John Henry Heyer III Submitted to the Department of Mechanical Engineering on May 7, 1999 in partial fulfillment of the requirements for the degree of Master of Science in Mechanical Engineering Abstract Specifications are given for an actuator for tubular home and office products. A survey of silent, miniature, low cost, low-speed-high-torque actuators and transmissions is performed. Three prototype actuators, including an in-line spur gear actuator, a differential cycloidal cam actuator, and a novel actuator concept, all driven by direct current motors, are designed, built, and tested. A fourth actuator, an ultrasonic motor, is purchased off-the-shelf and tested. The prototypes are ranked according to noise, torque, efficiency, and estimated cost, among other criteria. Thesis Supervisor: Woodie C.
    [Show full text]
  • Photogrammetry for Non-Invasive Terrestrial Position/Velocity Measurement of High-Flying Aircraft
    Photogrammetry Based PV Solutions Part VI: Elevation Axis Photogrammetry for Non-Invasive Terrestrial Position/Velocity Measurement of High-Flying Aircraft Part IV: Optical Encoder & Elevation Drive James A Crawford Synopsis Part I provided a simple introduction to the big-picture objectives for this multi- phase project. Part II first looked at telescope mounts, ultimately focusing on the azimuth-elevation type mount for the project. The basic mathematics for dealing with 3-phase DC motors (e.g., Clarke and Park transformations) were introduced, along with the first ingredients for modeling and controlling the DC motors in a precision manner. The Launchpad hardware platform from Texas Instruments was selected to host the motor control algorithms. In Part III, most of the attention was focused on the mechanical design, fabrication and assembly of the telescope mount. The detailed design of the hardware changed appreciably from the first concept as better approaches were recognized during the detailed design. A first-look at low rotational speed cogging torque was also made. In this part (Part IV), attention is directed to (i) the mechanical drive details for the elevation axis utilizing finally settling on a 25:1 belt-drive step- down approach and (ii) interfacing the optical encoders [5] on the azimuth and elevation axes to an Arduino Mega2560 as an interim step to the TMS320F28379D digital signal processor. This project update has been a long time in coming primarily due to detours involving development of the elevation drive elements. Even so, the journey has been enjoyable and full of learning experiences pertaining to harmonic drives, involute gears, and associated topics.
    [Show full text]
  • Impacts of a Profile Failure of the Cycloidal Drive of a Planetary Gear
    lubricants Article Impacts of a Profile Failure of the Cycloidal Drive of a Planetary Gear on Transmission Gear Attila Csobán Department of Machine and Product Design, Faculty of Mechanical Engineering, Budapest University of Technology and Economics, M˝uegyetemrkp. 3, 1111 Budapest, Hungary; [email protected] Abstract: Recently, cycloidal drives have been increasingly used due to their beneficial features, such as the implementation of a large transmission, efficiency, and high performance density. Production accuracy is inevitable in order to ensure the dynamically proper and smooth operation of the drive. Smaller backlash and minimal transmission fluctuations can only be achieved by improving the production accuracy, reducing the number of production failures, and shrinking the tolerance zone. This research primarily focuses on the investigation of the tolerable production accuracy of small- series and individually manufactured drives. The analysis of load distribution was calculated on the cogs of a planetary gear made with a wire EDM machine. On the other hand, we investigate how production failures affect transmission fluctuations and the backlash of a drive. The novelty of this research is based on the determined analytical equations, which can help engineers to find the right tolerances to a given gear ratio fluctuation. Keywords: profile failure; production failures; transmission fluctuation; cycloidal drive 1. Introduction The investigation of the impact of production failures on kinematic features was Citation: Csobán, A. Impacts of a performed by supposing different levels of production accuracy and tolerance zones Profile Failure of the Cycloidal Drive created on different cog geometries [1–4]. Based on the findings of this study, we can of a Planetary Gear on Transmission determine the required minimum accuracy level for a particular cog geometry, which Gear.
    [Show full text]
  • Orekhov VL D 2015.Pdf (5.668Mb)
    Series Elasticity in Linearly Actuated Humanoids Viktor Leonidovich Orekhov Dissertation submitted to the faculty of the Virginia Polytechnic Institute and State University in partial fulfillment of the requirements for the degree of Doctor of Philosophy In Mechanical Engineering Dennis W. Hong, Chair Daniel M. Dudek Brian Y. Lattimer Alexander Leonessa Robert H. Sturges December 8, 2014 Blacksburg, VA Keywords: Series Elastic Actuators, Compliant Actuators, Configurable Compliance, Actuator Model, Humanoid Robots Copyright 2014, Viktor L. Orekhov Series Elasticity in Linearly Actuated Humanoids Viktor Leonidovich Orekhov ABSTRACT Recent advancements in actuator technologies, computation, and control have led to major leaps in capability and have brought humanoids ever closer to being feasible solutions for real-world applications. As the capabilities of humanoids increase, they will be called on to operate in unstructured real world environments. This realization has driven researchers to develop more dynamic, robust, and adaptable robots. Compared to state-of-the-art robots, biological systems demonstrate remarkably better efficiency, agility, adaptability, and robustness. Many recent studies suggest that a core principle behind these advantages is compliance, yet there are very few compliant humanoids that have demonstrated successful walking. The work presented in this dissertation is based on several years of developing novel actuators for two full-scale linearly actuated compliant humanoid robots, SAFFiR and THOR. Both are state- of-the-art robots intended to operate in the extremely challenging real world scenarios of shipboard firefighting and disaster response. The design, modeling, and control of actuators in robotics application is critical because the rest of the robot is often designed around the actuators.
    [Show full text]
  • Compatibility of Various High Ratio Gear Technologies to Fit in a Small Volume – a Review
    ISSN No: 2348-4845 International Journal & Magazine of Engineering, Technology, Management and Research A Peer Reviewed Open Access International Journal Compatibility of Various High Ratio Gear Technologies to Fit in a Small Volume – A Review Govada Tejaswini G. Chandra Mohan Reddy M.Tech, Mechatronics, Principal & Professor, Dept of Mechanical Engineering, Dept of Mechanical Engineering, Mahatma Gandhi Institute of Technology. Mahatma Gandhi Institute of Technology. ABSTRACT: THEORY: In past few decades, the technological advancements Conventional gear system: have been high. Many technologies have been invent- ed, designed and checked for working and safety. In In conventional gear systems the multiplication of the last three decades many scientists and scholars torque or reduction of speed is possible by employing have contributed a lot, especially in the field of gear two or more gears. A schematic view of a gear box using transmissions. In this research oriented paper, various conventional gears is shown in Figure 1. The gears used technologies (Cycloid Drive, Harmonic Drive) available in conventional gear boxes may be spur gears, helical in gear transmission drives that can work efficiently gears, herringbone gear, face gears, bevel gears etc. when designed for high gear ratios and smaller diam- As they employ external contact, the space occupied eters are compared to the conventional gear systems. by them is also high.In a sun –planet model, (as shown The result of the study is a high ratio (greater than 100) in Figure 2) internal contact of gears is employed. It re- gearbox with smaller diameters (less than 5 cm), high quires at least a sun gear, a planet gear and two pinion efficiency and dense transmission torque.
    [Show full text]
  • Redesigning the Cycloidal Drive for Innovative Applications in Machines
    Redesigning the cycloidal drive for innovative applications in machines for smart construction yards Benedetto Allotta, Lorenzo Fiorineschi, Susanna Papini, Luca Pugi, Federico Rotini and Andrea Rindi Department of Industrial Engineering, University of Florence, Florence, Italy Abstract Purpose – This study aims to carry out an investigation of design approaches that should be used for the design of unconventional, innovative transmission system for construction yards to privilege a smooth behaviour efficiency, and the use of innovative production techniques. Results are quite surprising, as with a proper method it is possible to demonstrate that a cycloidal drive with Wolfrom topology should be an interesting solution for the proposed application. Design/methodology/approach – With a functional approach, also considering materials and specifications related to the investigated application, it is possible to demonstrate that possible optimal solutions should be quite different respect to the ones that can be suggested with a conventional approach. In particular for proposed applications constraints related to encumbrances, the choice of new material has led to the innovative unconventional choice of a Wolfrom cycloidal speed reducer. Findings – Provided solution is innovative respect current state of the art for machine currently used in construction yards: in terms of adopted transmission layout; in terms of chosen materials, resulting in an innovative solution. Research limitations/implications – Current research has strong implications on the adoption of polimeric materials for the construction of reliable transmission for harsh industrial environment as the proposed case study (concrete mixer for construction yard). Originality/value – Proposed transmission system is absolutely original and innovative respect current state of art also considering proposed materials and consequently production methods.
    [Show full text]