scott russell mechanism application

Application: used to connect intersecting shafts . Campbell, Scott SPE Disciplines. A standard Scott Russell straight- mechanism was invented by a French army officer, line mechanism provides an exact straight-line mo- Charles Nicolas Peaucellier, in 1864. Includes bibliographical references and index. In the present invention, the rotation unit is coupled to the joint unit. In the present invention, the joint unit pivotably coupled to the tip end part of the main arm member can be pivoted in the total of two kinds of manners including the pivot cooperating with the angle change between both of the arm members at the coupling position and the pivot independent to the angle change. Moreover, in the Scott Russell mechanism device according to the present invention, a joint unit may be pivotably coupled to the tip end part of the main arm member. In order to solve the above problem, a Scott Russell mechanism device according to the present invention includes a main arm member, a sub arm member pivotably coupled to the main arm member, and an angle changer for changing a coupling angle between the main arm member and the sub arm member. Further, when both of the base end parts of both of the arm members are moved in the same direction by the same amount, both of the arm members can be moved entirely while keeping their postures. This mechanism is a modification of modified Scott-Russel'smechanism with the difference that the point Pdoes not slide along a straight line, but moves in a circular arc with centre O. Therefore, the rotation unit can perform the postural displacement in a different range from the case of coupling in an order different from the above, and the application of the Scott Russell mechanism device according to the present invention further expands. cartesian coordinate type, Programme-controlled manipulators characterised by movement of the arms, e.g. Further, when both of the base end parts of both of the arm members are moved in the same direction by the same amount, both of the arm members can be moved entirely while keeping their postures. Thus, the degree of posturing freedom of the rotor of the rotation unit positioned to the farthest tip end increases, and the application of the Scott Russell mechanism device according to the present invention further expands. Moreover, with the industrial robot according to Patent Document 1, both of the arm members are rotated (turned) about the screw shaft 21 as a rotation center (turning center), then all of the industrial robot including the screw shaft 21 is turned, and thus a problem arises that a drive torque for the turning increases. Developed by James Watt for reciprocating piston of steam engine. A pivoting axis of the pivot of the joint unit may be in parallel to an axis of the pivots of the main arm member and the sub arm member at the coupling position. Application: Creates an approximate straight line if sliding along flat plane. Application: this is a mechanism for connecting two shafts having parallel misalignment. On this Wikipedia the language links are at the top of the page across from the article title. In the present invention, when the coupling angle is changed so that the base end parts of the main arm member and the sub arm member are most separated from each other, the degree of the curve of the main arm member is defined such that the second section of the main arm member is in a substantially parallel orientation to the linear sub arm member. cylindrical coordinate type or polar coordinate type, Programme-controlled manipulators characterised by positioning means for manipulator elements, Programme-controlled manipulators characterised by positioning means for manipulator elements with articulated links, MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING, ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL, Gearings comprising primarily only links or levers, with or without slides, Gearings comprising primarily only links or levers, with or without slides all movement being in, or parallel to, a single plane, Gearings comprising primarily only links or levers, with or without slides all movement being in, or parallel to, a single plane for conveying or interconverting oscillating or reciprocating motions, GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS, TECHNICAL SUBJECTS COVERED BY FORMER USPC, TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS, TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION, Multiple controlling elements for single controlled element, United Kingdom Atomic Energy Authority, London, Gilman Engineering & Manufacturing Co., Llc, The United States Of America As Represented By The Secretary Of The Navy, The Regents Of The University Of Michigan. Furthermore, Patent Document 4 discloses a Scott . This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO). The distance from the pivot driving unit to the joint unit becomes closer, and the transmission mechanism regarding the drive can be coordinated compactly. Thus, the tip end part of the main arm member can be drawn more to the base end part of the sub arm member. However, since both of the arm members are arranged offset from each other in the overlapped direction, a problem arises that the thickness dimension (dimension in the direction overlapping both of the arm members) of the device increases, and since the centers of both of the arm members in the thickness direction do not match with each other, a problem also arises that the balance in weight degrades in both of the entire arm members. Note that, the substantially parallel angle means that it does not require an accurate parallelism with respect to the sub arm member but includes a slight angle variation, and in the present invention, the substantially parallel angle can be said to be parallel as long as it is within a range of 10 with respect to the axis of the sub arm member in the longitude direction (also in other parts of description a variation range of 10 with respect to the accurate parallelism is included in the meaning of the phrase substantially parallel). Furthermore, in the Scott Russell mechanism device according to the present invention, a rotation unit having a rotor may be coupled to the joint unit. All Rights Reserved. Moreover, Patent Document 3 discloses a Scott Russell mechanism applied to a drive structure of a feed arm. In the present invention, the joint unit pivotably coupled to the tip end part of the main arm member can be pivoted in the total of two kinds of manners including the pivot cooperating with the angle change between both of the arm members at the coupling position and the pivot independent to the angle change. Learn CAD with SolidWorks 2008- Create new sketch tutorial by John Sinitsky, Creating new file in CAD program - Overview of SolidWorks2008 Menu by John Sinitsky. The main arm member and the sub arm member may be pivotable about the virtual straight line as a pivoting axis thereof. The angle changer may have a first ball screw arranged in parallel to the virtual straight line, and a first linearly-moving unit for being linearly moved by a rotation of the first ball screw. US 9,505,138 B2 device. Manufacturing methods for gripping devices, robot devices, control methods, control programs, recording media, and articles. The main arm member is formed into a boomerang-like shape such that the coupling position is curved to detour to an opposite side from the side where the sub arm member is positioned. There are many mechanisms based on slider crank linkage which can generate exact straight lines for limited intervals. Owner name: In the present invention, the base end part of either one of the sub arm member or the main arm member is linearly movable by the second ball screw. an angle changer for changing a coupling angle between the main arm member and the sub arm member. cartesian coordinate type by rotating at least one arm, excluding the head movement itself, e.g. It is possible to generate an exact straight line using the slider crank mechanism but the range of motion is limited. In the present invention, the gripping unit is attached to the rotor of the rotation unit. a pivot driving unit for pivoting the joint unit via the pivoting mechanism unit independently from the angle change by the angle changer. Therefore, even if the main arm member and the sub arm member are not arranged to offset from each other, interference between the arm members at the coupling position of both of the arm members can be subsided, and compared to the conventional device without an offset arrangement, the tip end part of the main arm member can be drawn close to the sub arm member. In the present invention, the pivoting member is pivotably coupled to the joint unit and the rotation unit having the rotor is coupled to the pivoting member. Copyright 2022 Bright Hub PM. Universal Joint/Hooke's Joint. 9.8. Moreover, the present invention aims to provide a Scott Russell mechanism device that allows a main arm member and a sub arm member to pivot at a base end part of both of the arm members to reduce a drive torque for turning both of the arm members, and to increase in degree of freedom in postures of various kinds of units attached to a tip end of the main arm member compared to the conventional degree. It is shown that O is a fixed pin joint, A is the input point to be driven by a PSA, and B is the output point. It is possible to generate an exact straight line using the slider crank mechanism but the range of motion is limited. ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SASAKI, HIROMICHI;SHIMIZU, MIKIO;ICHIKAWA, YASUNORI;REEL/FRAME:031303/0520, Free format text: Additional . Therefore, a plurality of variations can be provided to the method of moving the base end part of both of the arm members, resulting in being able to flexibly perform the moving of the tip end part of the main arm member. The SR mechanism in combination with a parallelogram mechanism enables. KINEMATICS OF MECHANISMS FROM THE TIME OF WATT, Animation of a Scott-Russell linkage in action, https://en.wikipedia.org/w/index.php?title=Scott_Russell_linkage&oldid=1087282615, Short description is different from Wikidata, Pages using multiple image with auto scaled images, Creative Commons Attribution-ShareAlike License 3.0, This page was last edited on 11 May 2022, at 14:35. HVAC: Heating, Ventilation & Air-Conditioning, Peaucellier Exact Straight Line Mechanism, Scott-Russell Exact Straight Line Mechanism, This post is part of the series: Kinematics - Design of Mechanisms, How to Calculate Cement, Sand and Aggregates in a Beam | Step by Step, Kinematics - Design of Mechanisms: Introduction, Kinematics Design of Mechanisms: Kinematic Inversion, Kinematics Actuation of Machines: Part I Electrical Actuation, Kinematics Actuation of Machines: Part II Hydraulic Actuation, Kinematics Actuation of Machines: Part III Pneumatic Actuation, Kinematics - Analysis of Mechanisms: Methods and Techniques, Kinematics - Synthesis of Mechanisms: Methods and Techniques, Kinematics - Special Mechanisms: Straight Line Mechanisms - II. The design criteria of the Scott-Russell mechanism are to achieve large amplification factor and minimum motion deviation. a second ball screw arranged in parallel to the first ball screw; and, a second linearly-moving unit for being linearly moved by a rotation of the second ball screw, and. In the present invention, either one of the base end parts of both of the arm members is linearly moved by the rotation of the first ball screw, and the pivots (turnings) of both of the arm members are driven about the virtual straight line connecting the base end parts of both arm members therebetween as the pivoting axis thereof, resulting in only both of the arm members turning. Application: Creates an approximate straight line . The Scott Russell mechanism device of, 14. Therefore, compared to the case of coupling the units in an order different from above, the pivoting unit positioned at the farthest tip end can perform the postural displacement in a different range. The application of the Scott Russell mechanism device according to the present invention expands by attaching various kinds of units corresponding to various applications to its rotor. A rotation unit having a rotor may be coupled to the pivoting member. Perfect straight lines can also be generated using a linkage mechanism. Therefore, by the rotor of the rotation unit where the amount of the postural displacement is increased compared to the conventional device, the Scott Russell mechanism device according to the present invention can be applied to the application of performing the gripping while flexibly responding to the orientation of a workpiece as a gripping target. [1] . In the present invention, either one of the base end parts of both of the arm members is linearly moved by the rotation of the first ball screw, and the pivots (turnings) of both of the arm members are driven about the virtual straight line connecting the base end parts of both arm members therebetween as the pivoting axis thereof, resulting in only both of the arm members turning.

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