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Cutting performance of very fine grained end mills
Uttendorfský, Aleš ; Humár, Anton (referee) ; Píška, Miroslav (advisor)
This diploma thesis consists of two parts. The theoretical part describes sintered carbides, their properties and manufacturing tools. Some selected problems of milling and its physical nature is discussed also. It also deals with the types and methods of tool wear testing. The aim is to compare the experimental properties of monolithic end milling cutters (short four cutting edges, uncoated carbides) of various grain sizes in two basic ways of milling - down-feed method and up-feed method. The measured values are evaluated by analysis in time series of the cutting forces and power.
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Productive Machining of Titanium Alloys - I.
Lengálová, Barbora ; Sliwková, Petra (referee) ; Píška, Miroslav (advisor)
This study consists of theoretical and practical part. Theoretical part of study resumes properties of titanium and it alloys and mentions application field and the way of production. Study includes review of machining strategies of titanium alloys. The materials for cutting tools and various types of tool wear are included. The experimental part of study consists of two partial experiments focused on the face milling by the ball – end milling cutter. First part is focused on facial milling of the inside part of spherical surface by the ball – end milling cutter and thus its surface roughness rating. The second part of experiment focuses on the milling of flat surface by the ball – end milling cutter and consequential analysis of cutting forces when the chip thickness is variable.
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Prediction of cutting forces and quality of surface when milling with high feeds
Mikel, Pavel ; Humár, Anton (referee) ; Píška, Miroslav (advisor)
Theoretical study describes force analysis and quality of surface when milling. In the experiment the emphasis is on determining forces and surface quality in milling in response to changes in feed rate. Especially determination of specific cutting force kc and cutting force Fc at materials from aluminium alloy AlSi9Cu3, titanium alloy Ti6Al4V and steel C45, the used tool was a milling cutter for high feeds. In the experimental section is furthermore contained statistical evaluation data which demonstrate a certain prediction changes of cutting load and surface roughness when changing feeds.
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Force load of the cutting tools in milling
Vašíček, Jiří ; Sliwková, Petra (referee) ; Polzer, Aleš (advisor)
The thesis is focused on measuring the power equipment for milling. The theoretical part describes the method of measuring forces with a deeper focus on the individual meter. There is also the description of the characteristics of the milling process. Experimental part is focused on the proposal of experiment of the face milling, its implementation and subsequent evaluation.
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Force load of the cutting tools in milling
Vašíček, Jiří ; Sliwková, Petra (referee) ; Polzer, Aleš (advisor)
The thesis is focused on measuring the power equipment for milling. The theoretical part describes the method of measuring forces with a deeper focus on the individual meter. There is also the description of the characteristics of the milling process. Experimental part is focused on the proposal of experiment of the face milling, its implementation and subsequent evaluation.
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Prediction of cutting forces and quality of surface when milling with high feeds
Mikel, Pavel ; Humár, Anton (referee) ; Píška, Miroslav (advisor)
Theoretical study describes force analysis and quality of surface when milling. In the experiment the emphasis is on determining forces and surface quality in milling in response to changes in feed rate. Especially determination of specific cutting force kc and cutting force Fc at materials from aluminium alloy AlSi9Cu3, titanium alloy Ti6Al4V and steel C45, the used tool was a milling cutter for high feeds. In the experimental section is furthermore contained statistical evaluation data which demonstrate a certain prediction changes of cutting load and surface roughness when changing feeds.
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An innovation of the CNC production of the disc-shaped parts
Křupka, Marek ; Humár, Anton (referee) ; Píška, Miroslav (advisor)
The optimal choice of cutting conditions, as well cutting tool, has a significant effect on the quality of machined part and is an essential parameter to reduce the cost of production. This thesis describes CNC turning process of disc springs made of 51CrV4 material, especially using new cutting tools and the use of higher cutting speeds. A comparison of four manufacturers of cutting tools in terms of surface quality, tool path and the machined material volume will be introduced. It was experimentally verified that our proposed facility has achieved the best result.
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Productive Machining of Titanium Alloys - I.
Lengálová, Barbora ; Sliwková, Petra (referee) ; Píška, Miroslav (advisor)
This study consists of theoretical and practical part. Theoretical part of study resumes properties of titanium and it alloys and mentions application field and the way of production. Study includes review of machining strategies of titanium alloys. The materials for cutting tools and various types of tool wear are included. The experimental part of study consists of two partial experiments focused on the face milling by the ball – end milling cutter. First part is focused on facial milling of the inside part of spherical surface by the ball – end milling cutter and thus its surface roughness rating. The second part of experiment focuses on the milling of flat surface by the ball – end milling cutter and consequential analysis of cutting forces when the chip thickness is variable.
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