2011 IEEE International Symposium on Assembly and Manufacturing (ISAM)

Managing and controlling very complex manufacturing systems and vast volumes of accumulate knowledge, holonic manufacturing system is developed. This paper introduces a method, which utilizes feature-based modeling for defining a pre-process plan. The pre-process plan developed can be linked in a holonic system. This paper, the generic steps for making a product are called “pre-process plan... View full abstract»

Assembly of products from the micro and the meso domain like micro-optical systems and/or micro-mechanical actuators is often done manually and with increasing product volumes more and more automatically. According to the specific needs associated with the size, such implementations should be realised in an adapted way without just downscaling macro process and equipment solutions. This leads to t... View full abstract»

This document is illustration of one real sheet metal product, which manufacturing is really challenging and many problems occur in production. In this paper there is given some point of views, which should be take into consideration before the part can be produced without (or some minimal) problems. View full abstract»

We present a novel experimental method for observing the lattice behavior of single crystal silicon (SCS) nanobeam in process of tensile testing. A TEM in-situ nanobeam tensile testing device has been fabricated and the lattice parameters of SCS nanobeam of different tensile stress have been measured using selected-area electron diffraction (SAED). The results suggest that the trends of the lattic... View full abstract»

The assembly of micro parts is associated with several demands. Most of these parts are highly sensitive to mechanical contact and to applied forces. As a consequence common handling tools proofed to be insufficient. Due to this fact new gripping principles are an urgent demand. Especially a new and upcoming contactless handling principle based on ultrasonic vibrations offers great potentials. Thi... View full abstract»

A new two-dimensional displacement measurement method to test circular track errors of NC machine tools is proposed, which is based on a dual-frequency laser interferometer. The system resolution can be up to tens of nanometer. This measurement system can inspect the circular track with small radius. And it requires two independent laser interferometers essentially can be simplified to only one la... View full abstract»

This paper presents a hybrid approach for facility layout redesign and dynamic job routing. More specifically, based on the source of uncertainty, the facility layout problem is split into two sub-problems and dealt with by two modules: re-layout and find-route. Genetic algorithm is used where changes may cause a layout redesign of the entire shop, while function blocks are utilised to find the be... View full abstract»

In this paper, permanent lubrication using grease with polymer for the sliders in the machine tool was developed and evaluated. Firstly, the grease with a polymer was developed for high cohesion property. The grease with a polymer has non-Newton property which can be followed with moving substances. Next, the W-rollers were developed for collecting and distributing of the grease around the slider ... View full abstract»

Bolted joints including bolts and members act like elastic springs under assembly and operating conditions. The bearing and transferring of the initial preload and the operating force are mainly dependent on the stiffness of both the bolts and their corresponding members. To obtain the deformation mechanism of bolted members, a systematic study on the prediction of the member stiffness and the cha... View full abstract»

Flexible and miniaturized production lines, known as desktop-, pocket- or micro-factories, with an integrated cleanroom are needed to meet the performance requirement of today's microproducts. In respect thereof, a miniaturized, large workspace robot is developed for microassembly tasks. Improvements based on recent benchmark tests and simulations are rounding out the overall paper. View full abstract»

Industrial requirements for automation of small parts assembly operations are driving technology into the direction of scalable robotic automation, suitable for operation in shared environments with human workers and exhibiting highest flexibility and ease of use. One of the challenges is developing solutions for personnel safety under these conditions. This paper discusses both the presently viab... View full abstract»

This paper introduces a microrobotic platform to make, manipulate and break individual paper fiber bonds. An individual paper fiber bond is the construction unit of a paper sheet and its properties affect the strength of the entire network of a paper sheet. In one hand, conventional laboratory tests on paper fiber bonds are mainly performed in a hand-sheet level. On the other hand, reported method... View full abstract»

We show how to extend electrokinetic tweezing, which can manipulate any visible particles and has more favorable force scaling than optical actuation (enabling manipulation of nanoscale objects to nanoscopic precision) from 2-dimensional control to the third dimension (3D). A novel and practical device is presented that can create both planar and vertical flows and electric field modes. Feedback c... View full abstract»

This paper studies short-term production planning in multi-item production-inventory systems. In short-term planning we study the delays caused by frozen schedules and planning intervals. We consider three different systems that are here called the machining subcontractor, the electrical machine company, and the assembly factory. Each of these has its own special characteristics. The subcontractor... View full abstract»

This study focused on the systematic error compensation of CNC machines via software way. The method is based on machining test pieces, measuring same for finding the systematic errors of a machine, forming an error map and using the map for correcting the tool paths of the NC-program. Technically, it was shown that by measuring the systematic errors of machines and numerically calculating new, co... View full abstract»

Hydrodynamic bearings (HBs) are prone to initial wear due to contact friction between the bushing and shaft under the condition of insufficient hydrodynamic pressure (IHP). This problem is usually solved by adding a hydrostatic bearing as a secondary bearing. But it increases complication, expense and power consumption by employing external high pressure pumps. In this paper, a HB and a rolling be... View full abstract»