Revisiting James Watt's Linkage with Implicit Functions and Modern Techniques
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P1359 Robust F HD-HDP.Pdf
(2007 =>) Users manual for frontloader ROBUST F HD / HDP 3311981 b Englisch P 1359 STOLL ROBUST F HD / HDP Table of contents page 1 Before operating 3 2 General safety information and prevention of accidents 5 2.1 Safety decal (=> 2007) 12 2.2 Safety decal (2007 =>) 13 3 Technical data 14 4 Description 16 5 Practical Application 18 5.1 Operation 18 5.1.1 Operation 19 5.1.2 Operation 20 5.2 Hydraulic system 21 5.3 Attaching of drive-in loader unit 22 5.4 Removal of the drive-in front loader 23 5.5 Mechanical single lever control unit SLV (option available) 26 5.5.1 Type 26 5.5.2 Definition of working directions 27 5.5.3 Definition of actuating directions 27 5.5.4 Additional functions joystick buttons 28 5.5.5 Operation fast stroke device 29 5.6 Quick installation and removal of attachments 30 5.7 Hydraulic implement control with switchable fast-stroke valve 31 5.8 Hydraulic diagram HE + HD 33 5.8.1 HD (standard – basic version) 33 5.8.2 HD (full equipped version) 34 5.9 Electrical Equipment HD 35 5.9.1 HD (standard – basic version) 35 5.9.2 HD Fully equipped electric version with 2-pole socket 36 5.9.3 HD Fully equipped electric version with 7-pole socket 37 5.10 Toogle switch 3rd Control circuit 38 5.11 Hydraulic parallel guidance of the implements 39 5.11.1 Advantages of hydraulic parallel motion ( HS = Hydraulical Selfleveling ) 39 5.11.2 Operation 40 5.11.3 Function 42 5.12 Control unit for "parallel motion" 43 5.13 Hydraulic diagram HDP 44 5.13.1 HDP (standard – basic version) 44 5.13.2 HDP (full equipped version) 45 5.14 Electrical -
The Jansen Linkage Kyra Rudy, Lydia Fawzy, Santino Bianco, Taylor Santelle Dr
The Jansen Linkage Kyra Rudy, Lydia Fawzy, Santino Bianco, Taylor Santelle Dr. Antonie J. (Ton) van den Bogert Applications and Abstract Advancements The Jansen linkage is an eleven-bar mechanism Currently, the primary application of the Jansen designed by Dutch artist Theo Jansen in his linkage is walking motion used in legged robotics. In collection “Strandbeest.” The mechanism is crank order to create a robot that can move independently, driven and mimics the motion of a leg. Its scalable a minimum of three linkage attached to a motor are design, energy efficiency, and deterministic foot required. An agile and fluid motion is created by the trajectory show promise of applicability in legged linkage.With the linkage’s mobility, robots are robotics. Theo Jansen himself has demonstrated capable of moving both forwards and backwards and pivoting left to right without compromising equal the usefulness of the mechanism through his traction. The unique gait pattern of the mechanism "standbeest” sculptures that utilize duplicates of the allows digitigrade movement, step climbing, and linkage whose cranks are turned by wind sails to obstacle evasion. However, the gait pattern is produce a walking motion. The motion yielded is maladaptive which limits its jam avoidance. smooth flowing and relatively agile. Because the linkage has been recently invented within the last few decades, walking movement is currently the primary application. Further investigation and optimization could bring about more useful applications that require a similar output path when simplicity in design is necessary. The Kinematics The Jansen linkage is a one degree of freedom, Objective planar, 11 mobile link leg mechanism that turns the The Jansen linkage is an important building The objective of this poster is to show the rotational movement of a crank into a stepping motion. -
The MUNCASTER Steam-Engine Models EDGAR T
The MUNCASTER steam-engine models EDGAR T. WESTBURY glances back with a modern eye toosome classic models of the past N THE COURSE of the long history caster is well remembered as a special- fore, need despise the crude and Of MODEL ENGINEER-now, in- ist in the design of all types of steam primitive types of models produced I cidentally, approaching 60 engines, whose excellent drawings of by beginners, so long as they lead on to years-many notable designs and many types of stationary and marine the more realistic types which were engines in early volumes of the M.E., Muncaster’s speciality. descriptive articles have been pub- and also in the handbook Model The simplest form of engine de- lished which have established tradi- Stationary Engines, published nearly scribed by Muncaster is one having a tions or marked milestones of half a century ago, provided scope single-acting oscillating cylinder (Fig. progress in model engineering. for the talents of innumerable con- 1) and this will commend itself to Not only are these remembered by structors. many readers, not only on account old readers but they are often the H. Muncaster was a practical of its simple construction, but also subject of considerable discussion. draughtsman who not only had a because it can be built without castings. and requests for further information wide experience of steam-engine design It is of the type which would now be about them are constantly encountered. but also obviously had a love and classed as “ inverted ” vertical, having A few of the authors of these features devotion to his craft, and to all the cylinder below the crankshaft, are still with us, and in one or two things mechanical. -
The Synthesis of Planar Four-Bar Linkage for Mixed Motion and Function Generation
sensors Communication The Synthesis of Planar Four-Bar Linkage for Mixed Motion and Function Generation Bin Wang, Xianchen Du, Jianzhong Ding, Yang Dong, Chunjie Wang and Xueao Liu * School of Mechanical Engineering and Automation, Beihang University, Beijing 100191, China; [email protected] (B.W.); [email protected] (X.D.); [email protected] (J.D.); [email protected] (Y.D.); [email protected] (C.W.) * Correspondence: [email protected] Abstract: The synthesis of four-bar linkage has been extensively researched, but for a long time, the problem of motion generation, path generation, and function generation have been studied separately, and their integration has not drawn much attention. This paper presents a numerical synthesis procedure for four-bar linkage that combines motion generation and function generation. The procedure is divided into two categories which are named as dependent combination and independent combination. Five feasible cases for dependent combination and two feasible cases for independent combination are analyzed. For each of feasible combinations, fully constrained vector loop equations of four-bar linkage are formulated in a complex plane. We present numerical examples to illustrate the synthesis procedure and determine the defect-free four-bar linkages. Keywords: robotic mechanism design; linkage synthesis; motion generation; function generation Citation: Wang, B.; Du, X.; Ding, J.; 1. Introduction Dong, Y.; Wang, C.; Liu, X. The Linkage synthesis is to determine link dimensions of the linkage that achieves pre- Synthesis of Planar Four-Bar Linkage scribed task positions [1–4]. Traditionally, linkage synthesis is divided into three types [5,6], for Mixed Motion and Function motion generation, function generation, and path generation. -
141210 the Rise of Steam Power
The rise of steam power The following notes have been written at the request of the Institution of Mechanical Engineers, Transport Division, Glasgow by Philip M Hosken for the use of its members. The content is copyright and no part should be copied in any media or incorporated into any publication without the written permission of the author. The contents are based on research contained in The Oblivion of Trevithick by the author. Section A is a very brief summary of the rise of steam power, something that would be a mighty tome if the full story of the ideas, disappointments, successes and myths were to be recounted. Section B is a brief summary of Trevithick’s contribution to the development of steam power, how he demonstrated it and how a replica of his 1801 road locomotive was built. Those who study early steam should bear in mind that much of the ‘history’ that has come down to us is based upon the dreams of people seen as sorcerers in their time and bears little reality to what was actually achieved. Very few of the engines depicted in drawings actually existed and only one or two made any significant contribution to the harnessing of steam power. It should also be appreciated that many drawings are retro-respective and close examination shows that they would not work. Many of those who sought to utilise the elusive power liberated when water became steam had little idea of the laws of thermodynamics or what they were doing. It was known that steam could be very dangerous but as it was invisible, only existed above the boiling point of water and was not described in the Holy Bible its existence and the activities of those who sought to contain and use it were seen as the work of the Devil. -
1700 Animated Linkages
Nguyen Duc Thang 1700 ANIMATED MECHANICAL MECHANISMS With Images, Brief explanations and Youtube links. Part 1 Transmission of continuous rotation Renewed on 31 December 2014 1 This document is divided into 3 parts. Part 1: Transmission of continuous rotation Part 2: Other kinds of motion transmission Part 3: Mechanisms of specific purposes Autodesk Inventor is used to create all videos in this document. They are available on Youtube channel “thang010146”. To bring as many as possible existing mechanical mechanisms into this document is author’s desire. However it is obstructed by author’s ability and Inventor’s capacity. Therefore from this document may be absent such mechanisms that are of complicated structure or include flexible and fluid links. This document is periodically renewed because the video building is continuous as long as possible. The renewed time is shown on the first page. This document may be helpful for people, who - have to deal with mechanical mechanisms everyday - see mechanical mechanisms as a hobby Any criticism or suggestion is highly appreciated with the author’s hope to make this document more useful. Author’s information: Name: Nguyen Duc Thang Birth year: 1946 Birth place: Hue city, Vietnam Residence place: Hanoi, Vietnam Education: - Mechanical engineer, 1969, Hanoi University of Technology, Vietnam - Doctor of Engineering, 1984, Kosice University of Technology, Slovakia Job history: - Designer of small mechanical engineering enterprises in Hanoi. - Retirement in 2002. Contact Email: [email protected] 2 Table of Contents 1. Continuous rotation transmission .................................................................................4 1.1. Couplings ....................................................................................................................4 1.2. Clutches ....................................................................................................................13 1.2.1. Two way clutches...............................................................................................13 1.2.1. -
Bulletin 173 Plate 1 Smithsonian Institution United States National Museum
U. S. NATIONAL MUSEUM BULLETIN 173 PLATE 1 SMITHSONIAN INSTITUTION UNITED STATES NATIONAL MUSEUM Bulletin 173 CATALOG OF THE MECHANICAL COLLECTIONS OF THE DIVISION OF ENGINEERING UNITED STATES NATIONAL MUSEUM BY FRANK A. TAYLOR UNITED STATES GOVERNMENT PRINTING OFFICE WASHINGTON : 1939 For lale by the Superintendent of Documents, Washington, D. C. Price 50 cents ADVERTISEMENT Tlie scientific publications of the National Museum include two series, known, respectively, as Proceedings and Bulletin. The Proceedings series, begun in 1878, is intended primarily as a medium for the publication of original papers, based on the collec- tions of the National Museum, that set forth newly acquired facts in biology, anthropology, and geology, with descriptions of new forms and revisions of limited groups. Copies of each paper, in pamphlet form, are distributed as published to libraries and scientific organi- zations and to specialists and others interested in the different sub- jects. The dates at which these separate papers are published are recorded in the table of contents of each of the volumes. Tlie series of Bulletins, the first of which was issued in 1875, contains separate publications comprising monographs of large zoological groups and other general systematic treatises (occasionally in several volumes), faunal works, reports of expeditions, catalogs of type specimens and special collections, and other material of simi- lar nature. The majority of the volumes are octavo in size, but a quarto size has been adopted in a few instances in which large plates were regarded as indispensable. In the Bulletin series appear vol- umes under the heading Contrihutions from the United States Na- tional Eerharium, in octavo form, published by the National Museum since 1902, which contain papers relating to the botanical collections of the Museum. -
Steam Engines of Which We Have Any Knowledge Were
A T H OROUGH AND PR ACT I CAL PR ESENT AT I ON OF MODER N ST EAM ENGI NE PR ACT I CE LLEWELLY DY N . I U M . E . V i P O F S S O O F X P M L G G P U DU U V S Y R E R E ERI ENTA EN INEERIN , R E NI ER IT AM ERICAN S O CIETY O F M ECH ANI C A L EN G INEERS I LL US T RA T ED AM ER ICA N T ECH N ICA L SOCIET Y C H ICAGO 19 17 CO PY GH 19 12 19 17 B Y RI T , , , AM ER ICA N T ECH N ICAL SOCIET Y CO PY RIG H TE D IN G REAT B RITAI N A L L RIGH TS RE S ERV E D 4 8 1 8 9 6 "GI. A INT RO DUCT IO N n m n ne w e e b e the ma es o ss H E moder stea e gi , h th r it j tic C rli , which so silently o pe rates the m assive e le ctric generators in f r mun a owe an s o r the an o o mo e w one o ou icip l p r pl t , gi t l c tiv hich t m es an o u omman s our uns n e pulls the Limited a sixty il h r , c d ti t d n And t e e m o emen is so f ee and e fe in admiratio . -
Linkage Mechanics and Power Amplification of the Mantis Shrimp's
Corrigendum Linkage mechanics and power amplification of the mantis shrimp’s strike S. N. Patek, B. N. Nowroozi, J. E. Baio, R. L. Caldwell and A. P. Summers 10.1242/jeb.052274 There was an error published in J. Exp. Biol. 210, 3677-3688. In Eqn1 on p. 3680, a ‘+’ sign was used instead of the correct ‘–’ sign. The equation is shown in its corrected form below. L = L22 + L – 2L L cos( ) , (1) db 2 1 1 2 input The authors apologise for this error but assure readers that the correct equation was used in the calculations that form the results reported in the study. © 2010. Published by The Company of Biologists Ltd 3677 The Journal of Experimental Biology 210, 3677-3688 Published by The Company of Biologists 2007 doi:10.1242/jeb.006486 Linkage mechanics and power amplification of the mantis shrimp’s strike S. N. Patek1,*, B. N. Nowroozi2, J. E. Baio1, R. L. Caldwell1 and A. P. Summers2 1Department of Integrative Biology, University of California, Berkeley, CA 94720-3140, USA and 2Ecology and Evolutionary Biology, University of California–Irvine, Irvine, CA 92697-2525, USA *Author for correspondence (e-mail: [email protected]) Accepted 6 August 2007 Summary Mantis shrimp (Stomatopoda) generate extremely rapid transmission is lower than predicted by the four-bar model. and forceful predatory strikes through a suite of structural The results of the morphological, kinematic and modifications of their raptorial appendages. Here we mechanical analyses suggest a multi-faceted mechanical examine the key morphological and kinematic components system that integrates latches, linkages and lever arms and of the raptorial strike that amplify the power output of the is powered by multiple sites of cuticular energy storage. -
Four-Bar Linkage Synthesis for a Combination of Motion and Path-Point Generation
FOUR-BAR LINKAGE SYNTHESIS FOR A COMBINATION OF MOTION AND PATH-POINT GENERATION Thesis Submitted to The School of Engineering of the UNIVERSITY OF DAYTON In Partial Fulfillment of the Requirements for The Degree of Master of Science in Mechanical Engineering By Yuxuan Tong UNIVERSITY OF DAYTON Dayton, Ohio May, 2013 FOUR-BAR LINKAGE SYNTHESIS FOR A COMBINATION OF MOTION AND PATH-POINT GENERATION Name: Tong, Yuxuan APPROVED BY: Andrew P. Murray, Ph.D. David Myszka, Ph.D. Advisor Committee Chairman Committee Member Professor, Dept. of Mechanical and Associate Professor, Dept. of Aerospace Engineering Mechanical and Aerospace Engineering A. Reza Kashani, Ph.D. Committee Member Professor, Dept. of Mechanical and Aerospace Engineering John Weber, Ph.D. Tony E. Saliba, Ph.D. Associate Dean Dean, School of Engineering School of Engineering & Wilke Distinguished Professor ii c Copyright by Yuxuan Tong All rights reserved 2013 ABSTRACT FOUR-BAR LINKAGE SYNTHESIS FOR A COMBINATION OF MOTION AND PATH-POINT GENERATION Name: Tong, Yuxuan University of Dayton Advisor: Dr. Andrew P. Murray This thesis develops techniques that address the design of planar four-bar linkages for tasks common to pick-and-place devices, used in assembly and manufacturing operations. The analysis approaches relate to two common kinematic synthesis tasks, motion generation and path-point gen- eration. Motion generation is a task that guides a rigid body through prescribed task positions which include position and orientation. Path-point generation is a task that requires guiding a reference point on a rigid body to move along a prescribed trajectory. Pick-and-place tasks often require the exact position and orientation of an object (motion generation) at the end points of the task. -
Kinematic Synthesis and Analysis Techniques to Improve Planar Rigid-Body Guidance
KINEMATIC SYNTHESIS AND ANALYSIS TECHNIQUES TO IMPROVE PLANAR RIGID-BODY GUIDANCE Dissertation Submitted to The School of Engineering of the UNIVERSITY OF DAYTON In Partial Fulfillment of the Requirements for The Degree Doctor of Philosophy in Mechanical Engineering by David H. Myszka UNIVERSITY OF DAYTON Dayton, Ohio August 2009 KINEMATIC SYNTHESIS AND ANALYSIS TECHNIQUES TO IMPROVE PLANAR RIGID-BODY GUIDANCE APPROVED BY: Andrew P. Murray, Ph.D. James P. Schmiedeler, Ph.D. Advisor Committee Chairman Committee Member Associate Professor, Dept. of Associate Professor, Dept. of Mechanical and Aerospace Engineering Mechanical Engineering, University of Notre Dame Ahmad Reza Kashani, Ph.D. Raul´ Ordo´nez,˜ Ph.D. Committee Member Committee Member Professor, Dept. of Mechanical and Associate Professor, Dept. of Electrical Aerospace Engineering and Computer Engineering Malcolm W. Daniels, Ph.D. Joseph E. Saliba, Ph.D. Associate Dean of Graduate Studies Dean School of Engineering School of Engineering ii c Copyright by David H. Myszka All rights reserved 2009 ABSTRACT KINEMATIC SYNTHESIS AND ANALYSIS TECHNIQUES TO IMPROVE PLANAR RIGID- BODY GUIDANCE Name: Myszka, David H. University of Dayton Advisor: Dr. Andrew P. Murray Machine designers frequently need to conceive of a device that exhibits particular motion char- acteristics. Rigid-body guidance refers to the design task that seeks a machine with the capacity to place a link (or part) in a set of prescribed positions. An emerging research area in need of advancements in these guidance techniques is rigid-body, shape-change mechanisms. This dissertation presents several synthesis and analysis methods that extend the established techniques for rigid-body guidance. Determining link lengths to achieve prescribed task positions is a classic problem. -
A New Method for Teaching the Fourbar Linkage and Its Application to Other Linkages
Paper ID #24648 A New Method for Teaching The Fourbar Linkage and its Application to Other Linkages Dr. Eric Constans, Rose-Hulman Institute of Technology Eric Constans is a Professor in Mechanical Engineering at the Rose-Hulman Institute of Technology. His research interests include engineering education, mechanical design and acoustics and vibration. Mr. Karl Dyer, Rowan University Dr. Shraddha Sangelkar, Rose-Hulman Institute of Technology Shraddha Sangelkar is an Assistant Professor in Mechanical Engineering at Rose-Hulman Institute of Technology. She received her M.S. (2010) and Ph.D. (2013) in Mechanical Engineering from Texas A&M University. She completed the B. Tech (2008) in Mechanical Engineering from Veermata Jijabai Technological Institute (V.J.T.I.), Mumbai, India. She taught for 5 years at Penn State Behrend prior to joining Rose-Hulman. c American Society for Engineering Education, 2019 A New Method for Teaching the Fourbar Linkage to Engineering Students Abstract The fourbar linkage is one of the first mechanisms that a student encounters in a machine kinematics or mechanism design course and teaching the position analysis of the fourbar has always presented a challenge to instructors. Position analysis of the fourbar linkage has a long history, dating from the 1800s to the present day. Here position analysis is taken to mean 1) finding the two remaining unknown angles on the linkage with an input angle given and 2) finding the path of a point on the linkage once all angles are known. The efficiency of position analysis has taken on increasing importance in recent years with the widespread use of path optimization software for robotic and mechanism design applications.