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A structural bionic design process is systematically presented for lightweight mechanical structures. By mimicking biological excellent structural principles, the structure of lathe bed or the stiffening ribs of a lathe bed were redesigned for better load-bearing efficiency. In this paper, a machine bed (Manufacturer: Indira Machine Tools Ltd.) is selected for the complete analysis …
It comprises a machine tool structure design, machine tool optimization based on machined surfaces, and simulation models (finite element model, dynamic model and mathematical …
Depending on the ATC type, machine tool structure, and position of the ATC components in regard with machine tool elements, all structural configurations of the machining center can …
Int. J. Mach. Tool Des. Res. Vol. 9, pp. 293-307. Pergamon Press 1969. Printed in Great Britain THE NON-LINEAR DYNAMIC BEHAVIOUR OF A MACHINE TOOL STRUCTURE* N. H. HANNAt and S. A. TOBIAS~ Abstract--The investigation is concerned with. the dynamic behaviour of a universal milling machine and the influence of the excitation conditions on the …
Description de deux types d'analyses techniques: methode par element fini au stade de the conception of the machine and analyse modale pour le calcul des caracteristiques de dynamique d'une machine existante. Description de deux types d'analyses techniques: methode par element fini au stade de la conception de la machine et analyse modale pour le calcul des …
Machine Tool Structures, Volume 1 deals with fundamental theories and calculation methods for machine tool structures. Experimental investigations into stiffness are discussed, along with the application of the results to the design of machine tool structures. Topics covered range from static and dynamic stiffness to chatter in metal cutting, stability in …
Machine Tool Structures (v. 1) [F. Koenigsberger] on Amazon. *FREE* shipping on qualifying offers. Machine Tool Structures (v. 1)
A system of computer programs is described as a tool developed for computation of structural dynamics and dynamic optimization of machine tool structures. Based on energy equations of a mechanical system at resonance, an approach to the optimum design is developed...
CHAPTER 3 DESIGN OF MACHINE TOOL STRUCTURE AND ANALYSIS 51 a) To provide rigid support on which various subassemblies can be mounted i.e. beds, bases. b) To provide housings for individual units or their assemblies like s gear box, spindle head. c) To support and move the work piece and tool relatively, i.e. table, carriage, tail stock etc. Machine tool structures …
However, with increasing demand on high-speed machining, and consistent machining accuracies, the structural rigidity, thermal stability, and vibration damping are becoming major design considerations for construction …
The identification of modal parameters of a machine tool structure, in service, is important to ensure stability and productivity during machining operations. The characterization can be carried out through an Operational Modal Analysis (OMA). However, in the presence of strong harmonic excitation, the application of OMA is not straightforward. To overcome this …
When you look at a machine or structure, try to see the fundamental principles in either action or missing. With a deep knowledge of these fundamental principles, one can rapidly generate …
In machine tool structures predominantly epoxy resin bonded mineral casting is used for bed components, frames, columns and supports. The casting process takes place at room temperature and requires sometimes complex and expensive moulds made of wood or metals. Since no external heating is necessary, the production of mineral cast components ...
During the machining process, the machine tool structural member experiences a different types of forces in its body. These forces must be resisted by the machine structure and in particular the bed and column in a machining center. In case of turning operation, the machine structures undergo bending and twisting in its member, which leads in causing the tool to …
The optimised machine tool structure was built, and its thermal performance was experimentally validated. Mori [4] presented an efficient design and optimisation method based on the Taguchi and finite element analysis method to reduce and compensate for the thermal displacement of high-accuracy numerical control lathes. With the optimised ...
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Transportation of the machine tool structure can be expensive. Large structures may require oversize load permits and their added cost. The ideal supply chain will have all of the processes performed by a single supplier. This will reduce transportation cost. If they cannot be completed by the same supplier having all the processes performed at ...
This paper deals with the automations of the machine tools' development in the phase of selecting of the optimal structure's configuration by means of neural networks. For this purpose, an algorithm and a programme were developed. By using of them a set of all possible machine tool structure's configurations on the basis of the relations between the movements of tool, …
paperback. Condition: Good. Ship out in 2 business day, And Fast shipping, Free Tracking number will be provided after the shipment.Pub Date: 1977 Publisher: d157 books of the structure of the National Defence Industry Press CNC machine tools and drive 77 edition: Book Publishing: Books products: 85 finished phase inventory: a Book Price: Original Price 1.95 …
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– In machine tool structure, if one is to minimize bending, the length of the structure should be no more than 3-5 times the depth of the beam. – When bolting components together, in order to make the bolted joint act almost as it were welded together, the …
machine tool structures. Publication date 1970 Collection internetarchivebooks; inlibrary; printdisabled Contributor Internet Archive Language English Volume 1 Item Size 1.2G . Notes. cut some text. Access-restricted-item true Addeddate 06:28:10 Bookplateleaf 0003 ...
Machining Centers, Machine-Tool Structures, and Machining Economics - all with Video Answers. Educators. Chapter Questions. 07:16. Problem 1 In addition to the number of joints in a machine tool (see Fig. 25.15), what other factors influence the rate at …
The weak component of the precision machine tool structure is a type of energy concentration that can indicate a change in the dynamic character of the machining process 52.
MACHINE TOOL STRUCTURES Machine tool parts such as beds, bases, columns, box-type housings, carriages, tables, etc., are known as machine tool structures. Requirements of machine tool structures 1. ACCURACY All important mating surfaces of the structures should be machined with a high degree of accuracy to provide the desired …
Recently, resin concrete is used in machine tool structures in order to improve the dynamic properties and to reduce the lead time of producing. It has been, however, pointed out by MTIRA that the composite structure made of steel combined with resin concrete is...
The two volumes of this work deal with machine tool structures. Apart from the functional requirements of shapes, accessibility, ease of chip removal, etc., the funda mental criteria for the performance and the corresponding dimensional layout of a machine tool structure lie in its static and dynamic stiffnesses. For this reason, this work
Chapter 25 - Machining Centers, Machine Tool Structures and Machining Economics - Free download as Powerpoint Presentation (.ppt), PDF File (.pdf), Text File (.txt) or view presentation slides online. Chapter 25 - Machining Centers, Machine …
Machine tool structures, such as beds and bases, must meet requirements of accuracy, rigidity, stiffness, strength, and wear resistance. They are subjected to compound loading of torsion and bending. Steel is generally preferred over cast iron for structures due to its higher strength to weight ratio, though cast iron has benefits like self-lubrication. Box-type profiles provide …
Machine Tools - Download as a PDF or view online for free. Machine Tools - Download as a PDF or view online for free. Submit Search. Machine Tools. Oct 20, 2013 • Download as PPTX, PDF • 32 likes • 19,944 …
The optimized design of the machine tool structure, which makes the material more rationally distributed and effectively utilized in the machine tool structure space, has always been the pursuit goal of the machine tool design workers in the structural design. In this paper, the modern design methods commonly used in the machine tool structure are reviewed …
Design, Research & Application. The International Journal of Machine Tools and Manufacture is devoted to advances in scientific understanding of essential mechanics of processes and machines applied to the manufacture of engineering components, mainly in metals, but also in composites, ceramics and other structural/functional materials.To this end coverage is given to …
The machine tool structures are designed for high wear resistance of guiding and guided and surface high static and dynamic stiffness. This unit particularly deals with various aspects in designing bed, column and housings. 14.8 KEY WORDS 46 Bed : It is the base of machine tool on which whole assembly is mounted. ...
Ab stract: The materials used in the manufacture of machine tools structures affects the metal removal rate; accuracy and surface finish of the products. The materials, in turn, have influence over the method of production, lead times and overall costs of the machine tool structures. Over a period of time machine tool builders relied on conventional materials, for the fabrication of …