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  • Kinematic Coupling for Precision Fixturing and Assembly

    2013-4-25 · Compliant Kinematic Couplings •Characteristics –Low Cost –Small – Medium Stroke –Precision 5 – 10 um •Applications/Process –Assembly Lines –Stamping, Forging, Forming Equipment Die Alignment –Semiconductor Manufacturing Equipment –Casting Dies •Cost –10 – 200 © MIT PERG

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  • OTPI521 Synopsis of “Tolerancing kinematic couplings”

    2016-10-18 · This report is a synopsis of a technical paper “Tolerancing kinematic couplings”. In this paper, the relationships between manufacturing cost and tolerances of the kinematic couplings are described. The position and orientation of kinematic mount are derived using parametric expression of positions of each contact points. It

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  • Tolerancing kinematic couplings

    2016-10-18 · kinematic coupling that minimize manufacturing costs but satisfy constraints on variation in position and orientation. 2. Background and prior work Kinematic couplings have been used in precision instru-ments for many years [7,8], and their utility in precision ma-chines is widely recognized [9]. In traditional applications,

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  • Kinematic couplings: A review of design principles and ...

    2019-5-17 · Kinematic Couplings: A Review of Design Principles and Applications Alexander Slocum Pappalardo Professor of Mechanical Engineering Massachusetts Institute of Technology 77 Massachusetts Avenue, Rm 3-445 Cambridge, MA 02139 USA [email protected] Abstract From the humble three legged milking stool to a SEMI standard for wafer pod

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  • Quasi-Kinematic Couplings for Low-Cost Precision

    2003-11-1 · Quasi-kinematic couplings (QKCs) are alignment devices that incorporate elastic-plastic deformations to combine principles of elastic averaging and exact constraint to achieve precision alignment. This paper shows QKCs can be used for low-cost alignment in …

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  • Kinematic couplings: A review of design principles and ...

    2010-4-1 · Kinematic couplings are deterministic because they only make contact at a number of points equal to the number of degrees of freedom that are to be restrained. This makes performance predictable , , and helps to reduce design and manufacturing costs. On the other hand, contact stresses are often very high and no lubrication layer remains between the elements that are in point contact.

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  • Design of quasi-kinematic couplings - ScienceDirect

    2004-7-1 · The finishing operations used to prepare groove surfaces add considerable cost to kinematic couplings. 2. Low-cost generation of alignment feature shape: making v-grooves for kinematic couplings requires more time and more complicated manufacturing processes than required by present low-cost technologies, i.e. pinned joints. For example, the ball and grooves are geometrically more complex, …

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  • Kinematic Coupling References

    2005-1-21 · Culpepper, M. L, Slocum, A. H., Shaikh F. Z, 'Quasi-Kinematic Couplings: A Low-Cost Method For Precision coupling of Product Components and the Like in Manufacturing Processes,'Presented at the 1999 Annual Meeting of the American Society for Precision Engineering, Monterey, CA, November,1999.

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  • Bal-tec - Kinematic Coupling Update

    The two main features of a Kinematic coupling is its ability to be separated and then to be returned to exactly the same position and its positional stability. A Kinematic coupling restricts all six degrees of mechanical freedom without over constraining any one of them. There is a good deal of confusion as to what constitutes a true Kinematic coupling. Although there are many variations we divided Kinematic couplings …

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  • OTPI521 Synopsis of “Tolerancing kinematic couplings”

    2016-10-18 · “Tolerancing kinematic couplings” by Mathiew Barraja, R.Ryan Vallance Distance Learning Koichi Taniguchi Dec.5th 2009 1.)11..))1.) AbstractAbstractAbstract This report is a synopsis of a technical paper “Tolerancing kinematic couplings”. In this paper, the relationships between manufacturing cost and tolerances of the

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  • Kinematic Coupling References

    2005-1-21 · Culpepper, M. L, Slocum, A. H., Shaikh F. Z, 'Quasi-Kinematic Couplings: A Low-Cost Method For Precision coupling of Product Components and the Like in Manufacturing Processes,'Presented at the 1999 Annual Meeting of the American Society for Precision Engineering, Monterey, CA, November,1999.

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  • Precision, Intelligent, Low Cost Interfaces

    2002-2-25 · • Kinematic design means that the motion is exactly constrained and geometric equations can be written to describe its motion • Kinematic Couplings constrain components exactly, commonly providing repeatability of ¼ micron or on the order of parts’ surface finish • Managing Hertz contact stresses is the key to successful kinematic coupling

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  • Kinematic coupling interchangeability

    2004-1-14 · kinematic coupling is the sum of the repeatability and the interchangeability errors. Repeatability of heavily-loaded kinematic couplings is a well-studied effect, measured for typical ball–groove and canoe ball kinematic couplings to be on the order of 1 m and better under well-controlled mount-ing conditions [1,2].

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  • Bal-tec - Kinematic Coupling Update

    Kinematic Coupling Update. Perfect Position and Repeatability through Kinematic Couplings. To begin with, the basic fulfillment of perfection in the Kinematic coupling depends on the very nature of spherical geometry. No other physical form has a single point as its source of origin The exact physical position of a perfect sphere at any moment ...

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  • Synopsis of “Design of Quasi-Kinematic Couplings” by

    2016-10-18 · Low-cost means to form sealed interfaces: adding sealing flexures to kinematic couplings increases costs. There is a significant gap in cost and performance between kinematic coupling and commonly manufactured couplings. The QKC is designed to address this gap, as is shown in Culpepper’s Figure 2. Culpepper’s Figure 2.

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  • WO2000062971A1 - Kinematic couplings - Google

    An object of the present invention, accordingly, is to provide a new and improved low cost quasi-kinematic coupling and method which enable repeatably locating two or more vehicle components, surfaces, or assemblies or the like without any of the above-described or other limitations of prior couplings.

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  • Kinematic coupling interchangeability - ScienceDirect

    2004-1-1 · Kinematic couplings were designed for the base and wrist interfaces of an ABB IRB6400R six-axis industrial robot manipulator, shown in Fig. 15.The base interface sits between the robot foot and the factory floor, and is normally restrained with eight 20 mm diameter bolts.The new three-bolt alternatives are a canoe ball interface (shown in Fig. 16), a three-pin interface, and a groove ...

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  • Experimental determination of kinematic coupling ...

    2005-1-1 · While kinematic couplings are frequently used as components of repeatable interfaces in ideal environments, their use in heavily loaded industrial int…

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  • Bal-tec - Kinematic Components Catalog 105-B

    2020-12-31 · Ideally, kinematic couplings are static parallel mechanisms IRL, deflection(s) = mobile parallel kinematic mechanisms ... Cost Plastic compliant kinematic couplings Characteristics 1. 180 microns 2. ~ 0.125 inches 3. 1 Time Use Applications/Processes 1. Sand Casting Design Issues 1. Loose Sand 2. K r application specific

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  • Hundreds of years of use/development and the [email protected]!*&%

    Friction-Based Design of Kinematic Couplings Layton C. Hale This paper was prepared for submittal to American Society for Precision Engineering 13th Annual Meeting St. Louis, Missouri October 25-30,1998 July 30,1998 This is a preprint of a paper intended for publication in a journal or proceedins

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  • Friction-Based Design of Kinematic Couplings

    2021-1-8 · Kinematic couplings restrain 6 degrees of freedom between two components and thus provide an e ective way to maintain high repeatability. They are generally classi ed into two types, namely the Kelvin coupling and the Maxwell coupling, as shown in Fig. 1. In Fig. 1, the Kelvin coupling on the left owns a tripod, three spherical surfaces of

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  • Repeatability Analysis of Overconstrained Kinematic ...

    2017-9-28 · set of kinematic couplings in order to take a measurement of the wafer alignment accuracy or to measure features on the surface of the wafer. These kinematic couplings were measured to have a repeatability of 390 nm, 361 nm, and 60.0nm in the X, Y, and Z directions, respectively [3]. Once the measurement on the wafer

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  • A Low-Cost, Automated Wafer Loading System With

    Kinematic coupling interchangeability. Precision Engineering, 2004. Alexander Slocum. John Hart. Alexander Slocum. John Hart. Download PDF. Download Full PDF Package. This paper. A short summary of this paper. 37 Full PDFs related to this paper. READ PAPER. Kinematic coupling interchangeability.

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  • (PDF) Kinematic coupling interchangeability |

    Tolerancing kinematic couplings Mathieu Barraja, R.Ryan Vallance How much do you like this book? What’s the quality of the file? Download the book for quality assessment What’s the quality of the downloaded files? جلد: 29 سال: 2005 زبان: english 12 10.1016 ...

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  • Tolerancing kinematic couplings | Mathieu Barraja;

    2017-3-13 · kinematic couplings (KCs), which are widely used due to their high repeatability arising from near-ideal contact at six points (Fig 1a). Critical to KC performance is understanding of the geomet-ric accuracy, friction, and elastic-plastic deforma-tion necessary to create couplings that mate re-peatably and have adequate stiffness for their in-

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  • PRECISION LOCATING OF ADDITIVELY MANUFACTURED

    2016-5-19 · Kinematic couplings Kinematic couplings are deterministic, highly repeatable positioning systems that exactly constrain all six DOF without over-constraint. The most common type is the Kelvin clamp, consisting of three spheres resting in cone, V-groove, and flat elements.

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  • Kinematic Couplings for Synchrotron Radiation

    2017-3-30 · Kinematic couplings are often used in synchrotron radiation facilities to achieve high-precision positioning and relocation of opto-mechanical components. The analytical and numerical modeling of their stress-strain behavior is however difficult, as it implies the necessity to deal

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  • Air Bearing Kinematic Coupling

    2020-7-27 · Also, components can be of lower accuracy and lower cost while still maintaining highly precise positioning. Components interfaced through kinematic couplings can be moved and later be placed back to the original position with high repeatability without expensive active position feedback devices. 1.4 Research Goals

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  • On the Kinematic of Generalized Oldham Couplings ...

    The purpose of this study aims at the kinematic study of generalized Oldham couplings by conducting kinematic analysis, kinematic simulation, and prototype experiment. First, the characteristics of generalized Oldham couplings are presented. Then, kinematic analysis and kinematic are performed. Finally, a prototype and its associated experimental setup are established.

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  • Kinematic Bases - Thorlabs

    1995-12-7 · N.J., 1992, and in 'Design of Three-Groove Kinematic Couplings,' Precision Eng., Vol. 14, No. 2, April 1992, pp 67-76. These couplings are deterministic in that the mating parts make contact at a number of points equal to the degrees of freedom being constrained.

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  • Flexural mount kinematic couplings and method -

    2017-9-9 · highest-grade commercial machine. A simple tip/tilt/Z parallel mechanism is designed based on kinematic couplings, which is a 3-degree-of-freedom (3-DOF) moderate-cost alignment stage. It is used to automatically adjust the posture of each lens on …

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  • Analysis and Design of 3-DOF Parallel Mechanism Based

    2017-3-13 · kinematic couplings (KCs), which are widely used due to their high repeatability arising from near-ideal contact at six points (Fig 1a). Critical to KC performance is understanding of the geomet-ric accuracy, friction, and elastic-plastic deforma-tion necessary to create couplings that mate re-peatably and have adequate stiffness for their in-

    Get Price
  • PRECISION LOCATING OF ADDITIVELY MANUFACTURED

    2003-4-2 · Examples of Kinematic Ambiguities • Eigenvector tracking method • Initialization cost function (hand specified image positions of joints) Kinematic Jump Sampling J O camera plane Js 1 J2 Jp p1 ps • Generate tree of all possible kinematic solutions – work outwards from root of kinematic …

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  • From Condensation to Kinematic Jumps

    2008-6-2 · Slocum, A. 'Kinematic Couplings for Precision Fixturing - Part 2: Experimental Determination of Repeatability and Stiffness.' Precision Engineering 10, no. 3 (July 1988): 115. Slocum, A. 'Design of Three-groove Kinematic Couplings.' Precision Engineering 14, no. 2 (April 1992): 67. Optional Readings

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  • MIT OpenCourseWare | Mechanical Engineering | 2.76

    2020-10-4 · Kinematic couplings eliminate degrees of freedom while distributing couplings are applied in average sense and may lead to indefinite stiffness matrix. Red Flag This Post. Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework. ...

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  • '-7

    2019-4-10 · based kinematic couplings, and it will facilitate the design of cost-effective passive fixturing devices that are capable of nano-scale repeatability. This in turn is expected to decrease production and assembly costs in a variety of industries where repeatable fixturing is required

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  • CiteSeerX — 1 DESIGN OF LOW-COST KINEMATIC

    CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): The inherent variability in sheet metal parts and assemblies is a problem that has plagued manufacturers for decades. This variation is a result of many causes, the major contributors being: 1. Material property variation 2. Variation in the deformation processes (e.g. die-part friction and die-part alignment)

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  • Kinematic Alignment of Precision Robotic Elements in ...

    2019-4-10 · rating kinematic couplings into the equipment can allow exchangeable interfaces to be more repeatable while minimally increasing the machine cost. A prime example of this trend exists in the robotics industry. Typical industrial robots are used in the automobile industry to assemble, weld and paint cars, as well as general mate-

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  • Kinematic Couplings for Synchrotron Radiation

    2017-3-30 · Kinematic couplings are often used in synchrotron radiation facilities to achieve high-precision positioning and relocation of opto-mechanical components. The analytical and numerical modeling of their stress-strain behavior is however difficult, as it implies the necessity to deal

    Get Price
  • A Low-Cost, Automated Wafer Loading System With

    2017-9-28 · set of kinematic couplings in order to take a measurement of the wafer alignment accuracy or to measure features on the surface of the wafer. These kinematic couplings were measured to have a repeatability of 390 nm, 361 nm, and 60.0nm in the X, Y, and Z directions, respectively [3]. Once the measurement on the wafer

    Get Price
  • Design and application of compliant quasi-kinematic

    However, this is becoming increasingly difficult to achieve as the demands of many location applications are surpassing the practical performance limit (~ five microns) of low-cost couplings. The absence of a means to meet these requirement has motivated the development of the Quasi-Kinematic …

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  • © 2001 Martin Culpepper - MIT OpenCourseWare

    2020-12-31 · Exact Constraint (Kinematic) Design Exact Constraint: Number of constraint points = DOF to be constrained These constraints must be independent!!! Assuming couplings have rigid bodies, equations can be written to describe movements Design is deterministic, saves design and development KCs provide repeatability on the order of parts’ surface ...

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  • Tolerancing kinematic couplings | Mathieu Barraja;

    Tolerancing kinematic couplings Mathieu Barraja, R.Ryan Vallance How much do you like this book? What’s the quality of the file? Download the book for quality assessment What’s the quality of the downloaded files? جلد: 29 سال: 2005 زبان: english 12 10.1016 ...

    Get Price
  • On the Kinematic of Generalized Oldham Couplings ...

    The purpose of this study aims at the kinematic study of generalized Oldham couplings by conducting kinematic analysis, kinematic simulation, and prototype experiment. First, the characteristics of generalized Oldham couplings are presented. Then, kinematic analysis and kinematic are performed. Finally, a prototype and its associated experimental setup are established.

    Get Price