scott russell mechanism application

The structural application of flexure hinges in the SR mechanism is especially important to practically play a powerful role in the positioning stage and precision cutting. 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. The device may include a pivoting drive source for driving the pivots of the main arm member and the sub arm member centering on the pivoting axis. Therefore, the rotation unit attached to the joint unit via the pivoting member can displace its rotor independently of the displacement of the tip end part of the main arm member. Assignors: ICHIKAWA, YASUNORI, SASAKI, HIROMICHI, SHIMIZU, MIKIO, HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS, MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES, 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, Programme-controlled manipulators characterised by movement of the arms, e.g. Highlight matches. 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). Moreover, 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. The point A of the rhombus is connect to fixed point O2 through the link 2. It contains solutions to the problems in the book and is available free of charge to adopters. wherein an axis of the pivot of the pivoting member is in parallel to the pivoting axis of the joint unit, and. Grasshopper Mechanism: This mechanism is a modification of the Scott-Russell Mechanism. Moreover, in the present invention, the gripping unit is attached to the tip end side of the pivoting unit. The linkage is named after John Scott Russell (1808-1882), although watchmaker William Freemantle had already patented it in 1803. Here is a sampling of five herbs that have demonstrated potential immune support benefits: 1. When linkage mechanisms are designed to generate exact straight lines the level of complexity increases as compared to the mechanisms designed to generate approximate straight line paths. Table drive device and work system equipped with table drive device, Driving equipment and the Workpiece clamping unit equipped with the driving equipment. A Scott Russell linkage is a linkage which translates linear motion through a right angle. [1] [2] Therefore, the first ball screw will be excluded from the turning targets, compared to the turnings of both of the arm members of the industrial robot relating to the reference document 1 described above, a drive torque caused by the turn is reduced, and both of the arm members can be turned smoothly. Jasen Russell tendre la recherche. A Scott Russell mechanism device is formed into a boomerang-like shape such that a main arm member coupled to a sub arm member is curved to detour a coupling position. Grasshopper mechanism. These mechanisms are simple linkage mechanisms with revolute joints, but they can only generate approximate straight lines and that too only for short lengths. 10. A pivoting unit having a pivoting part that is pivotable centering on an axis in parallel to the pivoting axis of the joint unit may be coupled to the rotor of the rotation unit. PATENTED CASE, Free format text: The Scott Russell mechanism device of, 13. Therefore, the gripping (chucking) flexibly responding to the orientation of a workpiece as a gripping target can be performed by the rotor of the rotation unit of which the amount of the postural displacement is increased, and the Scott Russell mechanism device according to the present invention can suitably be used for the gripping application. Therefore, the gripping unit can be pivoted proximally to the workpiece which is the gripping target, and the Scott Russell mechanism device including a gripping function suitable for such a gripping application can be provided. demonstrated by a study of mechanisms already in existence, such as the linkage of a retractable landing gear, computing mechanisms, mechanisms used in an automobile, and the like. Further, in the present invention, the gripping unit is attached to the rotor of the rotation unit. The main arm member may be formed linearly in a first section extending from the base end part to the part corresponding to the coupling position and a second section extending from the part corresponding to the coupling position to the tip end part, and the part corresponding to the coupling position is curved. Includes bibliographical references and index. cylindrical coordinate type or polar coordinate type, 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, The United States Of America As Represented By The Secretary Of The Navy, Gilman Engineering & Manufacturing Co., Llc, The Regents Of The University Of Michigan, ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SASAKI, HIROMICHI;SHIMIZU, MIKIO;ICHIKAWA, YASUNORI;REEL/FRAME:031303/0520, PAYMENT OF MAINTENANCE FEE, 4TH YR, SMALL ENTITY (ORIGINAL EVENT CODE: M2551); ENTITY STATUS OF PATENT OWNER: SMALL ENTITY, Motor-driven articulated arm with cable capstan including a brake, Substrate transfer unit, substrate treating apparatus including the same, and substrate treating method, Drive mechanism and manufacturing apparatus, Based on the collapsible explorer mechanical arm of triangle configuration link transmission, Device for carrying out a phase-locked linear displacement of two shafts arranged in parallel, Picking mechanism with metamorphic function, Bending apparatus for material testing and micro-ct imaging, mechanical arm with synchronous belt transmission device, Suitable for the lifting mechanism of disk-like accessory, STRIP CUTTING SYSTEM BY HELICOIDAL KNIVES AND CORRESPONDING CUTTING PROCESS, Motorized manipulator of the cable transmission type having an increased field of action, Scara type robot with counterbalanced arms, Pick and place device having two parallel axes, Improvements in or relating to overhead electric traction systems, Joint structure of arm, etc. Developed by James Watt for reciprocating piston of steam engine. Since the postures of these units on the tip end side depend on the direction (posture) of the tip end of the main arm member, a problem arises that a range in which the postures of the units attached to the tip end of the main arm member can be changed is limited. Scott Russell mechanism applied to a drive structure of a feed arm. wherein the degree of the curve of the main arm member is defined such that the second section of the main arm member becomes at a substantially parallel angle to the sub arm member when the angle changer changes the coupling angle so that the base end parts of the main arm member and the sub arm member are most separated from each other. The length of the link 2 is equal to the distance between points O2 and O4. Additional . [1] . In the present invention, the joint unit, the rotation unit, and the pivoting unit are coupled to each other in this order. The device may include a pivoting mechanism unit for automatically pivoting the joint unit cooperating with the angle change by the angle changer, a pivot driving unit for pivoting the joint unit via the pivoting mechanism unit independently from the angle change by the angle changer. Moreover, in the Scott Russell mechanism device according to the present invention, the sub arm member may be linearly formed. An axis of the pivot of the pivoting member may be in parallel to the pivoting axis of the joint unit. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). ULTRASOUND SYSTEM FRONT-END CIRCUIT FOR A 128-ELEMENT ARRAY PROBE Publication number: 20220381890 All Rights Reserved. Furthermore, a Scott-Russell mechanism and lever mechanism are arranged in series for constituting a two-grade displacement amplifier to conquer the small displacement of PZTs in each axis. Moreover, in the Scott Russell mechanism device according to the present invention, a pivoting member may be pivotably coupled to the joint unit. 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. European Patent Office, Extended European Search Report Issued in Application No. This mechanism can generate an exact straight line if the link dimensions are correct. 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. Universal Joint/Hooke's Joint. wherein an axis of the pivot of the pivoting member is in parallel to the pivoting axis of the joint unit, and. The Scott Russell mechanism device of. Library of Congress Cataloging-in-Publication Data Russell, Stuart J. 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. Furthermore, in the Scott Russell mechanism device according to the present invention, the angle changer may also have 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. Japanese Patent Office, International Search Report of PCT/JP2012/058634, Jun. This paper presents the structural design and analysis of a novel compliant gripper based on the Scott-Russell (SR) mechanism. The Scott Russell mechanism device of. For this description to be true the acting length of the short link, the blue one, needs to be half as long as the active length of the green one and the pin that connects them must be . 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 so as to turn only both of the arm members. 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. If both ends are turned into sliding connections, you get a Trammel of Archimedes. Therefore, as for the application of the Scott Russell mechanism device according to the present . An SR mechanism in combination with a parallelogram mechanism enables the achievement of a pure translation of the gripper tips, which is attractive for practical micromanipulation and microassembly applications. Scott Russell's Mechanism - Special Mechanism - Kinematics of Machinery Ekeeda 914K subscribers Subscribe 44 2.1K views 7 months ago Subject - Kinematics of Machinery Video Name - Scott. A tip end part of a main arm member of a Scott Russell mechanism is enabled to be brought close to a base end part of a 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. cartesian coordinate type, Programme-controlled manipulators characterised by movement of the arms, e.g. The present invention is made in view of the above situations, and aims to provide a Scott Russell mechanism device that is capable of drawing close to a tip end part of a main arm member proximally to a sub arm member by forming the main arm member into a boomerang-like shape without arranging both of the arm members offset from each other. Application: Creates an approximate straight line . 19, 2012, WIPO, 4 pages. Further, in the Scott Russell mechanism device according to the present invention, the main arm member and the sub arm member may be pivotable about the virtual straight line as a pivoting axis thereof. Therefore, the application of the Scott Russell mechanism device according to the present invention expands. As detailed in the previous articles there are many four bar linkage based mechanisms which can generate straight lines. wherein a rotation unit having a rotor is coupled to the pivoting member. The connections between links are modeled as providing ideal movement, pure rotation or sliding for example, and are called joints. Scott Russell Business Consultant Santa Barbara, California, United States 2K followers 500+ connections Join to connect Proactivate Consulting LLC About A Senior Business Executive with a. The Bricard inversor directly incorporates the Scott Russell's links, replacing the previously required straight line connection and allowing for two exact straight line outputs at right angles. Therefore, the posture of the joint unit can be controlled freely, and additionally, since the pivot driving unit is provided from the coupling position toward the tip end side of the main arm member, the distance to the joint unit becomes close, and the drive transmission mechanism can be scaled down. mechanism of machinery straight and parallel line mechanism table of contents straight line mechanism introduction history different mechanism used for The linkage has a rhombic loop formed of the equal lenght members, 5, 6, 7 and 8. Furthermore, in the Scott Russell mechanism device according to the present invention, a base end part of the main arm member and a base end part of the sub arm member that is on the opposite side from the coupling side of the sub arm member are positioned on the same virtual straight line. Therefore, the gripping unit can be pivoted proximally to the workpiece which is the gripping target, and the Scott Russell mechanism device including a griping function suitable for such a gripping application can be provided. CORROSION 2003 (1) CORROSION 2004 (1) International Petroleum Technology Conference (1) Offshore Technology Conference Asia (1) Publisher. wherein either one of the base end part of the sub arm member or the base end part of the main arm member is pivotably coupled to the second linearly-moving unit about the virtual straight line as the pivoting axis thereof. Machine Kinematics Questions and Answers - Application of Kutzbach Criterion to Plane Mechanisms ; advertisement. Bridge-type amplification mechanism Bridge-type mechanism, rhombic mechanism, double-rocker mechanism, scott-russell mechanism, honey comb mechanism, and lever mechanism are a few amplification mechanisms which have been used for micro/nano manipulation purposes [ 33, 34, 35, 36, 37 ]. 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. Therefore, compared to the conventional device, a drive torque caused by the turning can be reduced, and both of the arm members can be turned smoothly. 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. The present invention relates to a device applied with a Scott Russell mechanism where a main arm member and a sub arm member are coupled to each other and a coupling angle therebetween is changeable, and particularly relates to a Scott Russell mechanism device that can attach units to the tip end side of the main arm member and change postures of the units variously.

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