scott russell mechanism application

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. It is evident from the figure that this mechanism is made up of isosceles triangles, AB, AC and AO2 are of equal lengths. ULTRASOUND SYSTEM FRONT-END CIRCUIT FOR A 128-ELEMENT ARRAY PROBE Publication number: 20220381890 The dynamic equations of a micro-positioning Scott-Russell (SR) mechanism associated with two flexible hinges and an offset are developed and it is found that offsets of flexure hinges obviously affect the amplifying factor and linearity ratio, and appear to dominate the changes of magnification factors. ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SASAKI, HIROMICHI;SHIMIZU, MIKIO;ICHIKAWA, YASUNORI;REEL/FRAME:031303/0431, Free format text: In this mechanism, the centres Oand O1 are fixed.. The use of flexure joints in the Scott Russell mechanism provides a number of advantages over traditional revolute joints, making it a valuable technology for use in space where maintenance is difficult and costly. Therefore, a plurality of variations can be provided to the method of moving the base end part of both of the arm members, and the tip end part of the main arm member can move flexibly. This paper will discuss the mechanical design theoretical modeling and analyses, finite element analysis and experimental verification. 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. There are many mechanisms based on slider crank linkage which can generate exact straight lines for limited intervals. 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. It contains solutions to the problems in the book and is available free of charge to adopters. All Rights Reserved. In the present invention, the gripping unit is attached to the rotor of the rotation 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. The mechanism to the right can be refered to as the Scott Russell Mechanism or a more descriptive name is the Scott Russell Exact Straight Line Mechanism. Haluck 2002). The Evans 'grasshopper' linkage is a variant of a Scott Russell linkage which uses a long link to create a large enough arc to approximate a line. 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 the present invention, the main arm member is formed into the boomerang-like shape to detour to the opposite side of the side where the sub arm member is positioned. Specifically, the tip end part of the main arm member can be moved by only moving the base end part of the main arm member, by only moving the base end part of the sub arm member, or by moving both of the base end parts of both of the arm members, respectively. The mechanism with bridge-type flexure hinges is developed and optimized to amplify the displacement of a multilayer piezostack by Kim et al. The proposed mechanism is applied in an internal materials movement system using autonomous guided vehicles (AGVs) for supporting logistics processes along the supply chain, aiming to replace the current manual operations. A Scott Russell mechanism device pivotably couples a main arm member and a sub arm member to each other, as well as it pivotably couples a joint unit to a tip end part of the main arm member. 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. 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. Thus, the tip end part of the main arm member can be drawn to the sub arm member to the extent where the tip end part of the main arm member is adjacent to be right beside the base end part of the sub 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 movement of the arms, e.g. In the present invention, the joint unit, the rotation unit, and the pivoting unit are coupled to each other in this order. A mechanical linkage is an assembly of systems connected to manage forces and movement. A Scott Russell linkage is a linkage which translates linear motion through a right angle. The Scott Russell mechanism device of, 13. The First World War brought about much destruction and horror to extents that the world had never before seen. In the present invention, the rotation unit having the rotor is coupled to the joint unit. wherein the main arm member is protrudingly provided with a convex part at a side coupled to the sub arm member on the coupling position, wherein the main arm member is formed into a boomerang shape such that the coupling position is curved to make the base end part of the main arm member, the coupling shaft of the convex part, and the tip end part of the main arm member positioned on a same straight line, and. Further, in the present invention, the gripping unit is attached to the rotor of the rotation unit. A rotation unit having a rotor may be coupled to the pivoting member. European Patent Office, Extended European Search Report Issued in Application No. Scott-Russell Exact Straight Line Mechanism: Scott-Russell The complexity of the mechanisms to generate exact straight lines can be reduced by introduction of one or more slider crank linkages. cartesian coordinate type, Programme-controlled manipulators characterised by movement of the arms, e.g. These mechanisms are simple linkage mechanisms with revolute joints, but they can only generate approximate straight lines and that too only for short lengths. 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. wherein an angle of the side coupled to the sub arm member on the coupling position is made narrower than 180. 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. 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). These displacement amplifier mechanisms often have a proper amplification ratio capable of large working strokes; however, their low resonant frequency limits their application in high-performance jet dispensers. Library of Congress Cataloging-in-Publication Data Russell, Stuart J. The Scott Russell mechanism device of, 12. wherein an axis of the pivot of the pivoting member is in parallel to the pivoting axis of the joint unit, 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 so as to turn only both of the arm members. 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. The displacement amplification mechanism has the primary role in sensitivity and performance analysis of micro-devices (Iqbal and Malik 2019). 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. The length of the link 2 is equal to the distance between points O2 and O4. The Scott Russell mechanism device of, 15. for multi-joint type robot, Gravitation balancing device, articulated robot, and wrist device for robot, IMPROVEMENTS ON PLANE MANIPULATORS WITH FROZEN OR PROGRAMMABLE TRAVEL AT VERY HIGH RATES, Mechanical arm with a 2 freedom-degree wrist attitude regulation mechanism, Exhaust gas purification catalyst and method for producing the same, Motor driven articulated arm with cable capstan including a brake, Robot arm, robot, and robot operation method. A straight-line mechanism causes a point to travel in a straight line, or in a nearly straight line, without being guided by a plane surface. 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. The Scott-Russell mechanismThe structural application of flexure hinges in the SR amplifying mechanism is especially important to practically play an important role in the positioning stage and precision cutting. In each of the applets, drag the sliders to change the shape of the path of the free point to obtain the longest possible straight path. A systematic, if not rigorous, approach to the design of gears and cams also is usually presented in such a course. 11. Stuart J. Russell and Peter Norvig Upper Saddle River, New Jersey 07458. Thus, when the coupling angle is changed so that a base end part of the main arm member and a base end part of the sub arm member are most separated from each other, a tip end part of the main arm member can be moved close to right beside the base end part of the sub arm member. SCOTT RUSSEL MECHANISM [THEORY OF MACHINES] 1,251 views Sep 9, 2018 A Scott Russell linkage gives a theoretically linear motion by using a linkage form with three portions of the links all. Moreover, Patent Document 3 discloses a Scott Russell mechanism applied to a drive structure of a feed arm. The distance from the pivot driving unit to the joint unit becomes closer, and the transmission mechanism regarding the drive can be coordinated compactly. wherein a rotation unit having a rotor is coupled to the pivoting member. Therefore, even if the main arm member and the sub arm member are not arranged to offset from each other, when the coupling angle is changed so that the base end parts of both of the arm members are separated from each other, interference between the arm members at the coupling position of both of the arm members is subsided, and the tip end part of the main arm member is easily drawn close to the sub arm member. 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. 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. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). In the present invention, the gripping unit is attached to the tip end side of the pivoting unit. 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. Owner name: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SASAKI, HIROMICHI;SHIMIZU, MIKIO;ICHIKAWA, YASUNORI;REEL/FRAME:031303/0431, PAYMENT OF MAINTENANCE FEE, 4TH YR, SMALL ENTITY (ORIGINAL EVENT CODE: M2551); ENTITY STATUS OF PATENT OWNER: SMALL ENTITY. 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. Actuator mechanism and centrifuge having actuator mechanism, Multi-Functional Fixed Robot with Horizontal Maintenance Unit, Table drive device and work system equipped with table drive device, Driving equipment and the Workpiece clamping unit equipped with the driving equipment. 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. 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 linkage has a rhombic loop formed of the equal lenght members, 5, 6, 7 and 8. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). The point A of the rhombus is connect to fixed point O2 through the link 2. 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. Further, Patent Document 2 discloses a Scott Russell mechanism applied to a positioning transport device. Further, Patent Document 5 discloses a Scott Russell mechanism in a modified example where the coupling between the main arm member and the sub arm member is in a crank shape, the Scott Russell mechanism applied to a transport device. With the Scott Russell mechanism device, a moving range of the tip end side of the main arm member can be enlarged. The present invention is made in view of the above situations, and 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 the 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.