Optimal Module Selection for Preliminary Design of Reconfigurable Machine Tools

2005 ◽  
Vol 127 (1) ◽  
pp. 104-115 ◽  
Author(s):  
Li Chen ◽  
Fengfeng (Jeff) Xi ◽  
Ashish Macwan
Keyword(s):  
Machine Tool ◽  
Machine Tools ◽  
Design Parameters ◽  
Functional Requirements ◽  
Step Procedure ◽  
Module Selection ◽  
Feature Based ◽  
Conventional Machine ◽  
Degree Of Association ◽  
Reconfigurable Machine Tool

Presented in this paper is a feature-based method for selecting an optimal (minimum yet sufficient) set of modules necessary to form a reconfigurable machine tool for producing a part family. This method consists of two parts. In the first part, a feature-module database is created to form a selection space, where the machinable geometric features identified in STEP are defined as functional requirements (FR’s) and the structural component modules derived from the conventional machine tools as design parameters (DP’s). An inner FR-to-DP mapping mechanism within the database is based on the “Membership Grade Matrix,” which defines metrics to quantify the degree of association between a FR and a DP. Within the confines of the selection space built upon this FR-DP database, the second part of the method involves a two-step procedure for module selection. The first step is to select the modules from this space to construct all the required individual configurations of the reconfigurable machine tool. The second step is to maximize the number of common modules among the originally selected modules through re-selection. A case study on designing a reconfigurable machine tool dedicated to a given family of die molds is conducted and discussed.

Synthesis of Reconfigurable Machine Tools With Screw Theory

2000 ◽  
Author(s):  
Yong-Mo Moon ◽  
Sridhar Kota
Keyword(s):  
Machine Tool ◽  
Machine Tools ◽  
Screw Theory ◽  
Dynamic Stiffness ◽  
Building Blocks ◽  
Mathematical Framework ◽  
Functional Requirements ◽  
Structural Configurations ◽  
Synthesis Methodology ◽  
Reconfigurable Machine Tool

Abstract In this paper, we present a systematic methodology for designing Reconfigurable Machine Tools (RMTs). The synthesis methodology takes as input a set of functional requirements — a set of process plans and outputs a set of kinematically-viable reconfigurable machine tools that meet the given design specifications. We present a mathematical framework for synthesis of machine tools using a library of building blocks. The framework is rooted in (a) graph theoretic methods of enumeration of alternate structural configurations and (b) screw theory that enables us to manipulate matrix representations of motions to identify appropriate kinematic building blocks. The methodology described in this paper provides a mathematical framework to address dynamic stiffness, and accuracy prediction of the kinematically-viable designs that are generated by the synthesis procedure. This methodology has been implemented in a program, called PREMADE (PRogram for REconfigurable MAchine tool DEsign), and the results are validated against commercial machine tool designs.

The Study of Control System for Reconfigurable Machine Tool Model

2011 ◽  
Vol 188 ◽  
pp. 499-502
Author(s):  
L. Zhou ◽  
Wen Jie Nie ◽  
Z.R. Liao ◽  
X.R. Liang ◽  
G.Q. Pan
Keyword(s):  
Control System ◽  
Machine Tool ◽  
Motion Control ◽  
Machine Tools ◽  
Single Chip ◽  
Single Chip Microcomputer ◽  
Precision Motion Control ◽  
Single Function ◽  
Precision Motion ◽  
Reconfigurable Machine Tool

With the higher requirements of product processing, single-function machine can not meet the production needs. By analyzing the principles of reconfigurable machine tools, based on 51 single-chip microcomputer, this article researches the control system of reconfigurable machine tool, implements precision motion control for motors. The research can also reduce costs, so the practicality and economy all have a certain advantage, which will help promote the use in practice.

Design and Evaluation of a New-Type Multifunctional Machine Tool - Functional Requirements and Design -

1997 ◽  
Vol 9 (6) ◽  
pp. 427-433 ◽  
Author(s):  
Nobuhiro Sugimura ◽  
◽  
Shigeru Ueno ◽  
Nozomi Mishima ◽  
Soichi Hachiga ◽  
...  
Keyword(s):  
Machine Tool ◽  
Machine Tools ◽  
Scale Model ◽  
Manufacturing Processes ◽  
Functional Requirements ◽  
Machining Processes ◽  
Mechanical Products ◽  
New Type ◽  
Set Up ◽  
Basic Configuration

The objective of this research is to develop a new type of flexible and multifunctional machine tool which can be integrated into such manufacturing processes as machining, inspection and the heat treatment of mechanical products. The functional requirements of the multifunctional machine tools were initially analyzed based on a questionnaire given to both the users and the designers of machine tools. The basic configuration of the machine tool is proposed to conform to the functional requirements. The configuration designed has two main spindles, for both the tool and the work, one subspindle, and eight rotational and linear feed axes. All the machining processes of turning, milling, 5-axis machining of sculpted surfaces, grinding, slotting gear shaving and laser processing can be carried out using the proposed machine tool without the need for manual set-ups. A simulation model and a scale model are developed that simulate the manufacturing motion processes and the set-up processes of the machine tool.

Direct Pose Measurement: A Suitable Way to Increase the Accuracy of Parallel Robots?

2007 ◽  
Author(s):  
Christian Munzinger ◽  
Martin Kipfmu¨ller
Keyword(s):  
Machine Tool ◽  
Machine Tools ◽  
Parallel Robots ◽  
Dynamic Parameters ◽  
Parallel Mechanisms ◽  
End Effector ◽  
Parallel Kinematic Machines ◽  
Machine Tool Structures ◽  
Conventional Machine ◽  
Parallel Kinematic

Parallel robots are showing a high potential for the application in machine tools requesting high stiffness and dynamics. Nevertheless, a broad use of parallel mechanisms in machine tools is nowadays avoided by the minor accuracy of parallel kinematic machines compared to conventional machine tool structures, which entails the need for complex calibration algorithms. In this paper, a strategy to avoid the calibration of parallel kinematic machines by rearranging the measurement system to the end effector is presented. Because this rearrangement entails a massive modification of the machine tools control circuit that causes stability problems, first tests of the concept have been carried out via simulation. The focus of these tests was to determine the necessary dynamic parameters of a suitable machine tool’s structure. The results of these tests are used to derive guidelines for the design of a machine tool with direct pose measurement. Finally, a design approach for a suitable machine tool is presented.

Conversion Topology and Reconstruction in the Field of Robotics and Machine Tools

2012 ◽  
Vol 500 ◽  
pp. 460-465
Author(s):  
Fei Hou ◽  
Jing Kun Wang ◽  
Shan Yong Zhang
Keyword(s):  
Machine Tool ◽  
Machine Tools ◽  
Converter Topology ◽  
Reconfigurable Robot ◽  
Topological Characteristics ◽  
International Structure ◽  
Reconfigurable Machine Tool

The current domestic and international structure of reconfigurable robot and reconfigurable machine tool have been studied by us, their topological characteristics and methods of conversion were summed up, the method of reconfigurable machine to converter topology was found to achieve the purpose of reconstruction of the machine comparing the two different areas of the module types and functions.

scholarly journals Stiffness and Damping of Epoxy Granite

2020 ◽  
Vol 9 (3) ◽  
pp. 1105-1108
Keyword(s):  
Cast Iron ◽  
Machine Tool ◽  
Machine Tools ◽  
Weight Ratio ◽  
High Strength ◽  
Cutting Conditions ◽  
Polymer Concrete ◽  
Machine Tool Structures ◽  
Conventional Machine ◽  
Stiffness And Damping

The productivity and accuracy of machine tools now became most significant as the cutting conditions changes continuously. Therefore to withstand against these cutting conditions the machine tool structural material must have higher stiffness and damping. This review deals with various research works to study the stiffness and damping of epoxy granite or polymer concrete. It is reported that the epoxy granite shows improved damping and high strength to weight ratio than that of conventional machine tool structures of steel and cast iron.

Development of a Virtual Axis Cutter Grinder

2006 ◽  
Vol 304-305 ◽  
pp. 483-487
Author(s):  
Xian Guo Han ◽  
Wu Yi Chen ◽  
B. Huang ◽  
Shao Hong Wang
Keyword(s):  
Machine Tool ◽  
Machine Tools ◽  
Design Method ◽  
Parallel Machine ◽  
Design Parameters ◽  
Good Precision ◽  
Program System ◽  
Parallel Machine Tools ◽  
Parallel Machine Tool ◽  
New Machine

The development of a virtual axis cutter grinder was introduced. The main contents of this paper include layout design, parameters design method, control system and program system. The purpose of the development of the parallel machine tools is for cutter grinding. The dimension of the cutter and the translation workspace for cutter grinding usually is small and is therefore suitable for the parallel machine tool application. The new machine tool has high rigidity and good precision.

Optimum Size Consideration of Machine Tools

2007 ◽  
Vol 339 ◽  
pp. 337-342 ◽  
Author(s):  
N. Mishima
Keyword(s):  
Machine Tool ◽  
Machine Tools ◽  
Design Method ◽  
Design Guidelines ◽  
Design Tool ◽  
Design Parameters ◽  
Error Sources ◽  
Machine Performance ◽  
Small Machine ◽  
Tool Performance

As has been demonstrated in the “microfactory” which is a miniature manufacturing system proposed by the author’s research group, small machine tools that are comparable in size to their target products lead to large reductions in energy consumption and area. Experiments showed that they were capable of micro mechanical fabrication. However, the design of miniature machine tools has not been fully optimized. The author proposed a design method to estimate machine tool performance. In this paper, the design tool is applied to find miniaturizing strategies. By applying the design tool, it is possible to determine which of the design parameters and error sources would significantly affect machine performance. From the results of calculation, the tool can clarify the effect of machine tool sizes imposed on the machine performances. This leads to some suggestions regarding machine tool sizes. Finally, design guidelines for miniature machine can be obtained.

Design optimization of the linkage dimension for a hybrid-type parallel kinematic machine tool

2002 ◽  
Vol 216 (2) ◽  
pp. 143-156 ◽  
Author(s):  
T-H Chang ◽  
S-L Chen ◽  
C-A Kang ◽  
I Inasaki
Keyword(s):  
Machine Tool ◽  
Machine Tools ◽  
Inverse Kinematics ◽  
Design Parameters ◽  
Parallel Kinematic Machine ◽  
Design Procedures ◽  
Research Fields ◽  
Hybrid Mechanism ◽  
Parallel Kinematic ◽  
Accumulated Error

The parallel kinematic machine tool has many advantages including excellent loading capacity, high structural stiffness and small accumulated error of linkage. It has become one of the most important research fields for machine tools. In the present research, a principle for the optimization of the dimensional design parameters of a parallel kinematic machine tool is proposed. A five-degree-of-freedom (5DOF) parallel kinematic machine tool with a TRR-XY hybrid mechanism is chosen for investigating the design procedures and the optimization results. The inverse kinematics of the hybrid mechanism is first investigated. Then, the inverse solution is used to analyse and create the workspaces of the machine tool. The design parameters of the mechanical components are further optimized for constructing the maximum workspace.

Reconstruction Method of Reconfigurable Machine Tool Based on Task Polymorphism

2014 ◽  
Vol 971-973 ◽  
pp. 1001-1004
Author(s):  
Feng Xu Zhou ◽  
Ai Ping Li ◽  
Nan Xie ◽  
Li Yun Xu
Keyword(s):  
Machine Tool ◽  
Machine Tools ◽  
Cost Model ◽  
Engine Block ◽  
Production Cycle ◽  
Fixed Cost ◽  
Reconstruction Method ◽  
Processing Cost ◽  
The Cost ◽  
Reconfigurable Machine Tool

For the problem of reconfigurable machine tools existing in the field of manufacturing and processing cost, the reconfiguration strategy of a reconfigurable machine tool (RMT) was proposed based on the analysis of polymorphism processing tasks. Firstly, the models of fixed cost and reconstruction cost in per production cycle were built. On this basis, the cost model of RMT during the whole production cycle was built. Then the Dijkstra’s algorithm was used to solve the model and the optimal reconstruction program was obtained. Finally, a RMT for the engine block production was taken as an example to verify the validity of the model and the method.

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