Design of a touch trigger probe for a coordinate measuring machine

Download

index.pdf

Date

2007

Author

Karuç, Emre

Metadata

Show full item record

Item Usage Stats

282
views

424
downloads

Coordinate Measuring Machines (CMMs) have been widely used in industry in order to determine the form / dimensional tolerances of workpieces with very complicated geometrical shapes. Therefore, CMM is an important tool during the manufacturing and quality control phases. Workpiece to be measured on a CMM is probed via touch trigger probe through its stylus tip. In other words, by virtue of the touch trigger probes CMM can acquire the dimensional data of the workpiece that is to be measured. Therefore the probe has become the most vital and fundamental part of the CMM. In this thesis, a novel type of touch trigger probe / scanning probe is proposed. The proposed probe can also be used as a scanning probe for different applications. The main purpose of this thesis is to develop a novel type of touch trigger / scanning probe that has different kinematic stage and sensing stage than the other probes currently used in the industry. Giant Magnetoresistive (GMR) sensors are used for building the sensing stage of the proposed probe. GMR sensors are selected due to their outstanding sensitivity to small disturbances. Furthermore, in order to test the proposed probe; an anvil gauge setup is designed and proposed in this study. Finally, proposed probe is tested on a three-axis computer controlled electrical discharge machine (EDM), and the results acquired from those experiments are discussed.

Subject Keywords

Mechanical engineering.

URI

http://etd.lib.metu.edu.tr/upload/12609112/index.pdf
https://hdl.handle.net/11511/17328

Collections

Graduate School of Natural and Applied Sciences, Thesis

Suggestions

OpenMETU
Core

Development of a shell finite element for large deformation analysis of laminated composites Yıldız, Tuba; Darendeliler, Haluk; Department of Mechanical Engineering (2008) The objective of the present work is to investigate the behavior of laminated fiber -reinforced polymer matrix composite shell structures under bending load with the help of a modified finite element computer code which was previously developed for the analysis of pseudo-layered single material shells. The laminates are assumed to be orthotropic and the formulation is adapted to first order shear deformation theory. The aim is to determine the large deformation characteristics numerically, and to predict th...
Exact solution of rotating FGM shaft problem in the elastoplastic state of stress Akis, Tolga; Eraslan, Ahmet Nedim (Springer Science and Business Media LLC, 2007-10-01) Plane strain analytical solutions to estimate purely elastic, partially plastic and fully plastic deformation behavior of rotating functionally graded (FGM) hollow shafts are presented. The modulus of elasticity of the shaft material is assumed to vary nonlinearly in the radial direction. Tresca's yield criterion and its associated flow rule are used to formulate three different plastic regions for an ideal plastic material. By considerina different material compositions as well as a wide range of bore radi...
Direct numerical simulation of liquid flow in a horizontal microchannel Kükrer, Cenk Evren; Tarı, İlker; Department of Mechanical Engineering (2005) Numerical simulations of liquid flow in a micro-channel between two horizontal plates are performed. The channel is infinite in streamwise and spanwise directions and its height is taken as m, which falls within the dimension ranges of microchannels. The Navier-Stokes equations with the addition of Brinkman number (Br) to the energy equation are used as the governing equations and spectral methods based approach is applied to obtain the required accuracy to handle liquid flow in the microchannel. It is know...
Uncertainty analysis of coordinate measuring machine (CMM) measurements Sözak, Ahmet; Konukseven, Erhan İlhan; Department of Mechanical Engineering (2007) In this thesis, the measurement uncertainty of Coordinate Measuring Machine (CMM) is analysed and software is designed to simulate this. Analysis begins with the inspection of the measurement process and structure of the CMMs. After that, error sources are defined with respect to their effects on the measurement and then an error model is constructed to compensate these effects. In other words, systematic part of geometric, kinematic and thermal errors are compensated with error modelling. Kinematic and geo...
Prediction of plastic instability and forming limits in sheet metal forming Şanay, Berkay; Oral, Süha; Kaftanoğlu, Bilgin; Department of Mechanical Engineering (2010) The Forming Limit Diagram (FLD) is a widely used concept to represent the formability of thin metallic sheets. In sheet metal forming processes, plastic instability may occur, leading to defective products. In order to manufacture defect free products, the prediction of the forming limits of sheet metals is a very important issue. FLD’s can be obtained by several experimental, empirical and theoretical methods. However, the suitability and the accuracy of these methods for a given material may vary. In this...

Citation Formats

E. Karuç, “Design of a touch trigger probe for a coordinate measuring machine,” M.S. - Master of Science, Middle East Technical University, 2007.