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. Therefore, the rotation unit attached to the joint unit via the pivoting member can displace its rotor independently of the amount of the displacement of the tip end part of the main arm member, and the postural displacement of the rotor positioned at the farthest tip end increases much more. Mechatronic System Using a Straight-Line Motion Mechanism for AGV Developed by James Watt for reciprocating piston of steam engine. The degree of the curve of the main arm member may be 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. 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. 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 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.. Manufacturing methods for gripping devices, robot devices, control methods, control programs, recording media, and articles. 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. 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. Book - NIPS 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. SCOTT RUSSEL MECHANISM [THEORY OF MACHINES] - YouTube In the present invention, the joint unit pivotably coupled to the tip end part of the main arm member can be pivoted in a 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 of the angle change. 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. In order to solve the above problem, a 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. 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. In the present invention, the rotation unit is coupled to the joint unit. Until recently, Scott Russel | eMachineShop Part of the Lecture Notes in Electrical Engineering book series (LNEE,volume 505) Abstract This paper describes the design of an exact straight line motion mechanism, commonly known as a Scott-Russell mechanism (SRM), for industrial application. This mecha- tion of point E, as shown in Figure 2 (a) [8-10]. Moreover, in the present invention, the gripping unit is attached to the tip end side of the pivoting unit. US 9,505,138 B2 10 45 . The length of the link 2 is equal to the distance between points O2 and O4. Scott A. Russell Inventions, Patents and Patent Applications - Justia Patent Document 1 discloses a Scott Russell mechanism applied to a industrial robot. cartesian coordinate type by rotating at least one arm, excluding the head movement itself, e.g. Scott Russell mechanism developed by John Scott Russell (1808-1882), although already patented in 1803 by watchmaker William Freemantle, gives a theoretically linear motion by using a linkage form with three portions of the links all equal, and a rolling or sliding connection. 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. A joint unit pivotably coupled to a tip end part of a main arm member of a Scott Russell mechanism is pivoted in two ways. 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. 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. a pivot driving unit for pivoting the joint unit via the pivoting mechanism unit independently from the angle change by the angle changer. These mechanisms are simple linkage mechanisms with revolute joints, but they can only generate approximate straight lines and that too only for short lengths. 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. 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. 10, 2015, Germany, 6 pages. 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 (b), where the condition that the motion of the point B follows a vertical motion when the driving point A moves along horizontal direction is that the links AC=BC=OC. Moreover, the pivot driving unit is provided at any portion from the coupling position to the tip end side of the main arm member. 4. In the present invention, the joint unit, the rotation unit, and the pivoting unit are coupled to each other in this order. Any in SPE Disciplines (4) Conference. Therefore, since the rotor of the rotation unit can rotate independently of the displacement of the tip end part of the main arm member, the displacement amount of the rotor of the rotation unit coupled to the tip end side of the main arm member can be increased, and the application of the Scott Russell mechanism device according to the present invention further expands. It contains solutions to the problems in the book and is available free of charge to adopters. PATENTED CASE, Free format text: Therefore, the rotation unit attached to the joint unit via the pivoting member can displace its rotor independently of the amount of the displacement of the tip end part of the main arm member, and the postural displacement of the rotor positioned at the farthest tip end increases much more. [1] [2] Machines as simple as livers, machines such as James Watts steam engine and the industrial robots such as PUMA all are composed of mechanisms whether simple, complex or combination of many simple and complex mechanisms. Application: used to connect intersecting shafts . The Scott-Russell mechanism gives a theoretically linear motion by using a linkage form with three portions of the links all equal, and a rolling or sliding connection. 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. Two equal length length links are connected to the opposite corners of the rhombus at one end and to a common fixed point at the other ends. Development and dynamic modelling of a flexure-based Scott-Russell The Scott Russell mechanism device of, 13. for multi-joint type robot, Gravitation balancing device, articulated robot, and wrist device for robot, Manipulator with flat or three-dimensional trajectory suitable for high operating rate, Mechanical arm with a 2 freedom-degree wrist attitude regulation mechanism, Exhaust gas purification catalyst and method for producing the same, Motor-driven device for moving workpieces, Pick and place device having two parallel axes, Scara type robot with counterbalanced arms, Manipulator, manufacturing machine and production line using the same. Further, in the Scott Russell mechanism device according to the present invention, a gripping unit may be attached to a tip end side of the pivoting unit. The Scott Russell mechanism device of. Highlight matches. A Scott Russell mechanism device, comprising: a sub arm member pivotably coupled to the main arm member by a coupling shaft; and. US9505137B2 - Scott Russell mechanism device - Google Patents 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. The Scott-Russell (SR) amplifying mechanism [1] is designed for a cutting tool to amplify the PA displacement and carry out high precision for the motion control system. [Solved] A Scott-Russell mechanism consists of- - Testbook 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. Design and Analysis of a Modified Scott Russell Straight-Line Mechanism The design criteria of the Scott-Russell mechanism are to achieve large amplification factor and minimum motion deviation. This paper presents the structural design and analysis of a novel compliant gripper based on the Scott-Russell (SR) mechanism. In the present invention, the rotation unit is coupled to the joint unit. Moreover, 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. straight line motion mechanism - SlideShare Therefore, the posture of the joint unit can be controlled freely. One such example is Scott-Russell Mechanism as shown in the figure. Therefore, the application of the Scott Russell mechanism device according to the present invention expands. Flexural Mechanisms for Space Applications | by Hilaal Alam | Jan, 2023 The first exact straight line generating mechanism was invented by a French army officer Charles Nicolas Peaucellier in 1864. The Scott Russell mechanism device of, 18. Haluck 2002). 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. Based on the geometry of the linkage the output motion is a simple sine function of the drive link or a simple harmonic motion. ULTRASOUND SYSTEM FRONT-END CIRCUIT FOR A 128-ELEMENT ARRAY PROBE Publication number: 20220381890 Scott Russell linkage - Wikipedia An XYZ micromanipulator for precise positioning applications 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. 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. Moreover, 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. 6 Easy Ways to Support (Boost) Your Immune System Naturally 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. Moreover, in the Scott Russell mechanism device according to the present invention, a pivoting member may be pivotably coupled to the joint unit. Micromachines | Free Full-Text | Design and Analysis of a Hybrid LADDERS, FOOT MECHANISMS FOR LADDERS, AND RELATED METHODS Publication number: 20220381087 an angle changer for changing a coupling angle between the main arm member and the sub arm member. Machine Kinematics Questions and Answers - Application of Kutzbach Criterion to Plane Mechanisms ; advertisement. The movement of a body, or link, is studied using geometry so the link is considered to be rigid. wherein an axis of the pivot of the pivoting member is in parallel to the pivoting axis of the joint unit, and. The locus of the straight line is the same as the travel of the slider for 90 degrees rotation of the crank. 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. On this Wikipedia the language links are at the top of the page across from the article title. Either one of the base end part of the sub arm member or the base end part of the main arm member may be pivotably coupled to the second linearly-moving unit about the virtual straight line as the pivoting axis thereof. Scott A. Russell has filed for patents to protect the following inventions. cartesian coordinate type, Programme-controlled manipulators characterised by movement of the arms, e.g. The main arm member and the sub arm member may be pivotable about the virtual straight line as a pivoting axis thereof. The linkage is named after John Scott Russell (1808-1882), although watchmaker William Freemantle had already patented it in 1803. Copyright 2022 Bright Hub PM. Structure design of a new compliant gripper based on Scott-Russell 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. 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. In the present invention, the joint unit, the rotation unit, and the pivoting unit are coupled to each other in this order. Grasshopper Mechanism: This mechanism is a modification of the Scott-Russell Mechanism. If you need custom mechanical parts machined - eMachineShop can help. Earlier than January, 2018 (2) 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. Freemantle straight-line linkage from British Patent 2741, November 17, 1803.
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