scott russell mechanism application

This mecha- tion of point E, as shown in Figure 2 (a) [8-10]. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Campbell, Scott SPE Disciplines. Highlight matches. Patent Document 1 discloses a Scott Russell mechanism applied to a industrial robot. The connections between links are modeled as providing ideal movement, pure rotation or sliding for example, and are called joints. Japanese Patent Office, International Search Report of PCT/JP2011/058124, Jun. Therefore, the application of the Scott Russell mechanism device according to the present invention expands. It is possible to generate an exact straight line using the slider crank mechanism but the range of motion is limited. Jasen Russell tendre la recherche. Developed by James Watt for reciprocating piston of steam engine. 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. Further, Patent Document 2 discloses a Scott Russell mechanism applied to a positioning transport device. The Scott Russell mechanism device of, 19. Peaucellier linkage can convert an input circular motion to the exact straight line motion. Schematic of a Scott-Russell mechanism using flexure hinges Open in viewer Classified in two types: 1- Exact straight line mechanisms:- Paucellier mechanism, Hart mechanism, Scott-Russel mechanism, Kempe mechanism,etc. cartesian coordinate type by rotating at least one arm, excluding the head movement itself, e.g. Figure 3. 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 the present invention, the pivoting of the joint unit pivotably coupled to the tip end part of the main arm member is driven by the pivot driving unit. Simply download our free CAD . Moreover, in the present invention, pivoting member is pivotably coupled to the joint unit and the rotation unit having the rotor is coupled to the pivoting member. The optimally-designed stage was fabricated by wire electrical discharge machining and tested to investigate its performance. wherein the device comprises a pivoting drive source for driving the pivots of the main arm member and the sub arm member centering on the pivoting axis. 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. Application: this is a mechanism for connecting two shafts having parallel misalignment. The construction of this mechanism is such that the point which is connected to the crank moves in a circular path and the point traversing the straight line is selected as the output point. 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. 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, 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. This paper describes the development of a gecko-inspired robotic gripper for grasping flat objects using Scott-Russell mechanisms. However, a bridge-type mechanism with an external load always works in an energy-inefcient situation due to the storage of strain energy in the exural hinges, which can be validated by the analytical model established in this paper. 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. 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. The linkage is named after John Scott Russell (1808-1882), although watchmaker William Freemantle had already patented it in 1803. In the present invention, the rotation unit having the rotor is coupled to the joint 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. wherein an angle of the side coupled to the sub arm member on the coupling position is made narrower than 180. 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. 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.. 2- Approximate straight line mechanisms:- Modified . wherein the main arm member and the sub arm member are pivotable about the virtual straight line as a pivoting axis thereof, the angle changer including: 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, and, wherein either one of the base end part of the main arm member or the base end part of the sub arm member is pivotably coupled to the first linearly-moving unit about the virtual straight line as the pivoting axis thereof, and. Furthermore, Patent Document 4 discloses a Scott Russell mechanism applied to an industrial robot. an angle changer for changing a coupling angle between the main arm member and the sub arm member. Moreover, in the Scott Russell mechanism device according to the present invention, a pivoting member may be pivotably coupled to the joint unit. 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 proposed stage showed the first natural frequency of 57 Hz and the maximum stroke of 122.84 m, 108.46 m, 0.685 mrad in the x-, y-, and -direction, respectively. Scott-Russell Mechanism. It is a four bar mechanism and all the pairs are turning pairs as shown in Fig. 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. Scott-Russell mechanism: The schematic of a flexure hinge-based Scott-Russell mechanism is depicted in Figure 3. 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. If you need custom mechanical parts machined - eMachineShop can help. One link is double the size of the other, and is connected to the smaller link by its midpoint. Therefore, as for the application of the Scott Russell mechanism device according to the present invention, the posture of the joint unit can be changed in the total of two kinds of manners. 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. 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. 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. Earlier than January, 2018 (2) 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. Application: used to connect intersecting shafts . In the present invention, the joint unit, the rotation unit, and the pivoting unit are coupled to each other in this order. This paper presents the structural design and analysis of a novel compliant gripper based on the Scott-Russell (SR) mechanism. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). It is possible to generate an exact straight line using the slider crank mechanism but the range of motion is limited. It consists of both sliding and turning pairs Download Solution PDF Share on Whatsapp 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. Any in SPE Disciplines (4) Conference. CORROSION 2003 (1) CORROSION 2004 (1) International Petroleum Technology Conference (1) Offshore Technology Conference Asia (1) Publisher. a pivoting unit having a pivoting part that is pivotable centering on an axis in parallel to the pivoting axis of the joint unit is coupled to the rotor of the rotation unit. Moreover, Patent Document 3 discloses a Scott Russell mechanism applied to a drive structure of a feed arm. 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. In the present invention, the gripping unit is attached to the rotor of the rotation unit. 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. A Scott Russell linkage is a linkage which translates linear motion through a right angle. 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. 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. With the industrial robot according to Patent Document 1, both of the arm members are rotated (turned) about the screw shaft. Lever Mechanisms," Published in "Mechanisms in Modern Engineering Design, Drive mechanism and manufacturing apparatus, Based on the collapsible explorer mechanical arm of triangle configuration link transmission, unit for transferring a substrate and apparatus and method for treating the substrate with the unit, Device for carrying out a phase-locked linear displacement of two shafts arranged in parallel. 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, and, wherein either one of the base end part of the main arm member or the base end part of the sub arm member is pivotably coupled to the first linearly-moving unit about the virtual straight line as the pivoting axis thereof, and. 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. 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. SQUSE INC., JAPAN, Free format text: 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.

Relationship Between Nutrition And Family Health Brainly, Articles S