Modern Machinery (MM) Science Journal, June 2008

Numerical and analytical modelling of a pallet used at a machining centre at high speed

Lubomír Novotný, Jiří Marek
Keywords: FEM | workpiece pallet exchange | high speed | Machine tool

A workpiece manipulation assembly includes two main parts. 1. A base permanently connected to a spindle. 2. A pallet manipulated by a rotary manipulation table from working place to setting place & vice versa. This assembly is rotating around the spindle axis. The FEM analysis and analytical analysis of the workpiece exchange manipulation system of vertical turning centre, deals with stress and def (…)

Problem of metamorphic structures in service robotics

Keywords: module | ametamorphic structure | kinematic structure | functional structure | Robot

Recent trends in the development of robots confirm that the concept of metamorphic – self-regulating structures has found its recent form in theoretical as well as practical robotics. This development direction is topical also for service robotics where the effects of this concept can be used more intensively in the benefit of utility features of service robots. The paper shows theoretical and desi (…)

Exploring Efficiency of Tool Coating via Deep Drawing of Cylindrical Cups

Jaromir AUDY, Emil EVIN
Keywords: product quality | Friction | power | work | forces | steel blanks | tool surface treatment | tool geometry | cylindrical cups | deep drawing

The present investigation was set up to examine both predicted and experimental values of forces, power, press work and friction in drawing cups from low carbon steel blanks using the same die set but in different uncoated and TiN coated conditions. The results showed a good agreement between predicted and experimental values. In addition, the findings demonstrated that the TiN coated tools reduced (…)

Cognitive and systematic design

W. Ernst EDER
Keywords: systematic and methodical approaches | cognitive approaches

Following a lively discussion at the AEDS-SIG Workshop 2005, I had the pleasure of reading the doctoral thesis by Kalevi Nevala [2005a]. The following is a summary and interpretation of comments I made to Dr. Nevala. In discussions or considerations of design engineering problems and engineering designers, different words are often used. Designing is a process of transforming information about a fu (…)