- TITLE:
DESIGN OPTIMIZATION OF A TECHNOLOGICAL GEAR SHAFT
- AUTHOR(S):
V. Nikolov, G. P. Tonkov
- ABSTRACT:
The research focuses on the design and static load capacity of a technology gear shaft. A new design of the shaft is proposed, consistent with the functionality of the mechanism. The design of the shaft is optimized in dimensions, workability of production, and i nstallation. The technological mechanism works in harsh operating conditions as the gear is open and shock loaded. This adversely affects the other elements and aggregates, including the studied shaft. Design and optimization of the shaft in this operational mode is performed in the software environment of specialized software MITCalc. The results are rich illustrated. They can be used in designing various types of shafts and their multicriteria optimization.
- TITLE:
A STUDY ON THE LOAD CAPACITY OF A SPUR GEAR
- AUTHOR(S):
G. P. Tonkov
- ABSTRACT:
The research focuses on the static load capacity of a spur gear. The gear works in extreme conditions - continuous shock loads, causing its frequent destruction. Special attention is paid to the study of the impact of the materials used and their heat and chemical-heat treatment. The gear is deciphered and studied at given load, kinematics, mode and geometric constraints imposed on the construction. The study was done in the software environment of the specialized in the field of machine elements software program MITCalc. The program helped to determine the basic causes for the failure of the gear. The results of the final and optimal variant are presented in a systematic way, convenient for use in its next optimization.
- TITLE:
METHODOLOGY AND ALGORITHM FOR COMPUTER-AIDED DESIGN OF FIXTURES FOR THE LOCATING OF WORKPIECES IN THE MECHANICAL TREATMENT
- AUTHOR(S):
H. Metev, M. Raev, J. Mitev
- ABSTRACT:
This article discusses the need for computer-aided design of fixtures for the locating of workpieces during mechanical treatment and proposed methodology and algorithm implementation. Analyzed the structure of computer-aided design and content of the required database.
- TITLE:
RESEARCH ON THE DURABILITY OF METAL CUTTING TOOLS MADE BY METAL INJECTION MOULDING METHOD
- AUTHOR(S):
K. V. Atanasov, I. S. Alexandrova
- ABSTRACT:
This article presents a research on the working capacity of metal cutting tools – end – mills, based on the parameter ‘’durability’’. The tools were made from blanks of tool material CATAMOLD M2 obtained by Metal Injection Moulding method. During the study, the over – all impact of the operating mode elements on the tools durability was determined by conducting of a planned experiment. The exponents in the expanded Taylor formula were determined for this tool material.
- TITLE:
QUALITY OF SURFACE AND ANALYSIS OF CONDITIONS IN FINISH MACHINING WITH DIAMOND SMOOTHING
- AUTHOR(S):
V. T. Kuzmanov
- ABSTRACT:
Finish machining with diamond burnishing is used to improve the performance properties of machine parts. Compared with other types of plastic deformation, diamond burnishing has significant advantages, arising from the physic-mechanical properties of diamond and the conditions under which it takes place. In the work the conditions and factors that affect the quality of the processed diamond smoothing surfaces are analyzed.
