scholarly journals Chain of refined perception in self-optimizing assembly of micro-optical systems

2014 ◽  
Vol 3 (1) ◽  
pp. 87-95 ◽  
Author(s):  
S. Haag ◽  
D. Zontar ◽  
J. Schleupen ◽  
T. Müller ◽  
C. Brecher
Keyword(s):  
Computer Aided Design ◽  
Optical Systems ◽  
Optical Simulation ◽  
Development Effort ◽  
Coordinate Systems ◽  
Flexible Assembly ◽  
Laser Systems ◽  
Aided Design ◽  
Assembly Tasks ◽  
Part Feeding

Abstract. Today, the assembly of laser systems requires a large share of manual operations due to its complexity regarding the optimal alignment of optics. Although the feasibility of automated alignment of laser optics has been shown in research labs, the development effort for the automation of assembly does not meet economic requirements – especially for low-volume laser production. This paper presents a model-based and sensor-integrated assembly execution approach for flexible assembly cells consisting of a macro-positioner covering a large workspace and a compact micromanipulator with camera attached to the positioner. In order to make full use of available models from computer-aided design (CAD) and optical simulation, sensor systems at different levels of accuracy are used for matching perceived information with model data. This approach is named "chain of refined perception", and it allows for automated planning of complex assembly tasks along all major phases of assembly such as collision-free path planning, part feeding, and active and passive alignment. The focus of the paper is put on the in-process image-based metrology and information extraction used for identifying and calibrating local coordinate systems as well as the exploitation of that information for a part feeding process for micro-optics. Results will be presented regarding the processes of automated calibration of the robot camera as well as the local coordinate systems of part feeding area and robot base.

Virtual Model of Tool Path for Milling Machine at Classical Design Base

2013 ◽  
Vol 282 ◽  
pp. 235-241 ◽  
Author(s):  
Ján Semjon ◽  
Peter Demeč ◽  
Jozef Svetlík
Keyword(s):  
Computer Aided Design ◽  
Tool Path ◽  
Milling Machine ◽  
Coordinate Systems ◽  
Machine Model ◽  
Tool Paths ◽  
True Value ◽  
Classical Design ◽  
Ideal Tool ◽  
Aided Design

This article focuses on issue of proposal ideal tool paths for machine tools. Model of machine consists from 6 basic knots where milling machine disposes spindle placed in the horizontal direction are. Based on mathematical analysis we can detect the movement of machine axes for uncertainty investigated. The calculated values can be compared with machine model developed in Computer - Aided Design. Defining the shape of workpiece as well as assigning an appropriate instrument can be determined by true value of precision workpiece. After substituting the values of specific dimensions we get the final position of vectors point for contact in tool coordinate systems at individual model solids.

Computer Aided Design of Flexible Assembly Systems

CIRP Annals ◽  
1985 ◽  
Vol 34 (1) ◽  
pp. 53-56 ◽  
Author(s):  
H. van Brussel ◽  
D. De Winter ◽  
P. Vanherck
Keyword(s):  
Computer Aided Design ◽  
Assembly Systems ◽  
Flexible Assembly Systems ◽  
Flexible Assembly ◽  
Computer Aided ◽  
Aided Design

scholarly journals Generalized algorithm for finding the catacaustics of an optical system

2020 ◽  
pp. 40-48
Author(s):  
Evgenii Vladimirovich Lyubchinov
Keyword(s):  
Optical System ◽  
Computer Aided Design ◽  
Optical Radiation ◽  
Optical Systems ◽  
Direct Light ◽  
Geometric Objects ◽  
Design Systems ◽  
Aided Design ◽  
Applied Fields ◽  
Scattered Beam

The author of the work has proposed an algorithm for determining catacaustics in a “source-reflector” optical system on a plane. Katakaustika is called the envelope of reflected rays from a given curve and the study of catacaustics in the design of optical systems is one of the main tasks. The paper gives examples of solving this problem and presents the corresponding visualization. Particular attention is paid to problems where the source and reflector are curved, because these tasks in the scientific literature have not been previously considered. The presented algorithm is based on the cyclographic projection of the spatial curve of the line and its optical property. It is versatile and suitable for all tasks where the source of optical radiation is given in the form of a central (point), parallel or scattered beam of direct (light rays). The main advantage of the algorithm is that in the end it turns out analytical, i.e. exact solution to the problem of determining catacaustics. The results of the study can be used in applied fields of geometric optics, as well as in various computer-aided design systems specializing in modeling lighting of geometric objects.

Setup Planning Automation for Six-Axis Wire Electrical Discharge Machining

2012 ◽  
Vol 134 (2) ◽  
Author(s):  
Zhi Yang ◽  
Richard A Wysk ◽  
Sanjay Joshi
Keyword(s):  
Process Planning ◽  
Computer Aided Design ◽  
Electrical Discharge ◽  
Electrical Discharge Machining ◽  
Complex Geometries ◽  
Rotational Axis ◽  
Wire Electrical Discharge Machining ◽  
Coordinate Systems ◽  
Process Plans ◽  
Aided Design

A modern six-axis wire electrical discharge machining (WEDM) system is capable of producing more complex geometries than 2D, 2½D, or ruled surface parts. The rotational axis on a six-axis WEDM system allows a part to be rotated while using a cutting wire to fabricate it. However, limited automation for process planning six-axis WEDM systems requires significant time and effort must be put into process planning. Even with commercially-available computer-aided design (CAD) software, it is difficult to produce process plans for a six-axis WEDM system. Toward automatic development of process plans, a method of determining such setup plans, including the number of setup orientations and rotational axis movements, is presented in this paper. Tangent visibility analysis results presented in our prior research are used to guide the setup, and intermediate coordinate systems are defined in order to classify the tangent visibility results. A greedy algorithm is developed to determine the set of intermediate coordinates and setup orientations for six-axis WEDM.

Modern numerical techniques and software for photo- and thermoemission electron optical systems computer-aided design

1997 ◽  
Author(s):  
Mikhail A. Monastyrski ◽  
Sergei V. Andreev ◽  
Inna S. Gaidukova ◽  
Victor A. Tarasov ◽  
Anatoly M. Filachev
Keyword(s):  
Computer Aided Design ◽  
Optical Systems ◽  
Numerical Techniques ◽  
Computer Aided ◽  
Aided Design
Sign in / Sign up

Export Citation Format

Share Document