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Showing 1 to 20 of 42 for “"Cutting force"”.
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Investigation of cutting temperature and cutting force from mist flow pattern in MQL technique
… (MQL) is an alternative method to supply the cutting fluid in the formation of mist. MQL has proven to reduce machining cost and increase machining performance. Previous research have stated that machining performance is affected by the lubricant type, flow rate, the distance between nozzle …
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Modeling of the cylinder boring process for prediction of cutting force, temperature and surface error
… the elastic deflection of the bore wall due to cutting forces and the thermal expansion of the cylinder bore during machining. The prediction of cutting forces is achieved through the development of a mechanistic model which accounts for the effect of cutting condition and tool geometry …
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Dynamic response and optimal design of a lathe spindle under experimentally measured random cutting force excitations
… spindle under experimentally measured random cutting force excitations. The optimal design is based on minimizing the maximum mean square displacement response of the workpiece under the action of random cutting forces. The stochastic partial differential equation of motion characterizing the …
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A model to predict the three-dimensional cutting force system for drilling with arbitrary point geometry
… etc. Most of these parameters are related to the cutting forces generated in the process. Modeling the cutting forces in drilling, in terms of the tool geometry and machining conditions, is an important step in developing a simulation-based platform for the design and evaluation of new drill point …
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A study of the wedge cutting force through transversely stiffened plates : an application to ship grounding resistance
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1994, and Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1994.
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Mechanistic modeling of cutting forces in wavy-edge bull-nose helical end-milling of Inconel 718 under different cooling-lubrication strategies
… the results of the development of a mechanistic cutting force prediction model for the wavy-edge bull-nose helical endmill (WEBNHE). The mechanistic model was developed to predict cutting force components and the resultant cutting force in high-speed end-milling of Inconel 718 under two cooling …
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Empirical model-based control for end milling process
… surface finish quality by maintaining on-line cutting force values. The proposed model has been developed to present the control model constraints, by varying the machining parameters to control the force output to be constant. To relate the surface finish and the cutting force in the end …
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Prediction of cutting forces in five-axis micro-ball end milling
… Unfortunately, due to the high fragility of the cutting tool, premature tool failure has been a major challenge in micro-scale machining. Tool strength of a micro-ball end mill can be easily exceeded by the strain induced by cutting force, thus cutting force is desired to be accurately predicted. …
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A generalized approach for mechanics of chip formation in steady-state and dynamic orthogonal metal cutting using a new model of shear zone with parallel boundaries and its validation to cutting-forces prediction in self-piloting machining
… parallel-sided shear zone models. A steady-state cutting force model has been derived and adapted to orthogonal cutting of a self-piloting drilling. In the formulated model, special attention has been devoted to the thermomechanical state which defines the effect of the temperature on the yield …
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The use of variable spindle speed for vibration control in face milling process
… is one of the most important issues in the metal cutting process. It has been recognized for several decades that many machining process performance measures are influenced by vibrations: e.g., surface finish, tool wear, and cutting force characteristics. Vibrations result in a poor surface finish …
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Control de las fuerzas de fresado mediante actuadores piezoeléctricos
… modelling, simulation, and control of milling forces. Tool runout causes tool cutting edges to experience uneven forces during milling. This fact also affects tool life and deteriorates workpiece surface quality. In this work a procedure, in order to diminish the effects of tool runout, is …
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A finite element study of the mechanics of micro-groove machining of 4340 steel
… of the experimental study on gathering the cutting performance information such as temperature, stress, and chip formation for the purpose of process improvements. Therefore, a 3D Finite Element (FE) model was developed to study the microgroove cutting process. However, the frictional heat …
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The dynamic cutting of metals
… machine tool chatter requires a knowledge of the cutting forces existing under vibration conditions. Previous direct experimental work has been very limited in its range and has given results which contradicted those derived from observations on regenerative chatter. A description of suitable …
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A Process Model-Based Monitoring and Fault Diagnosis Methodology for Free-Form Surface Machining Process
… analysis of harmonic power distribution in the cutting force signal. A genetic algorithm approach is used to search and determine the fault pattern and magnitudes. The results obtained from these methods are validated through both steady state and free-form surface machining tests on 1018 steel.
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Experimental study of biomedical stainless steel 316l vibration assisted milling using retrofittable 1D UVAM worktable
… A series of end-mill experiment in dry cutting conditions were conducted on stainless steel 316L. A commercially available cutting tool manufactured by HPMT with a diameter of 6 mm and featured with differential pitch was used in this research. The ultrasonic vibration generator excites …
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Performance of laser assisted micro-milling (laμmill) of titanium alloy using micro ball end mill
… to determine the machining parameters and the cutting tool to laser beam distance. The performance of laser assisted micro milling using micro ball end mill was evaluated via experimental works using various feed, feed rate, depth of cut and cutting speed. The cutting force, tool wear, chip …
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System Characterization, Control and Optimal Feed -Rate Scheduling for High -Speed Machining and Nano Positioning
… requirements such as dimensional error, maximum cutting force, etc. A bi-directional scan structure is adopted for the algorithm and a sub-optimization structure for each optimized point. These features make the algorithm computationally efficient, extendable to any state-dependent constraints …
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Experimental Analysis of Parameters Influencing the Bone Burring Process
… associated with the bone removal process (cutting force, vibration, and temperature) as a function of various burring-specific parameters. Initial process trends were established on a uniform sawbone analog through use of a fully balanced multivariate statistical analysis. A smaller set of …
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ΠΡΟΣΟΜΟΙΩΣΗ ΕΞΕΛΙΞΗΣ ΑΥΤΟΔΙΕΓΕΙΡΟΜΕΝΩΝ ΤΑΛΑΝΤΩΣΕΩΝ ΚΑΤΑ ΤΗΝ ΤΟΡΝΕΥΣΗ ΚΑΙ ΤΟ ΦΡΑΙΖΑΡΙΣΜΑ ΜΕ ΣΚΟΠΟ ΤΟΝ ΠΡΟΣΔΙΟΡΙΣΜΟ ΔΥΝΑΜΙΚΑ ΕΥΣΤΑΘΩΝ ΣΥΝ...
… SYSTEM MACHINE TOOL-TOOL WORKPIECE IN THE CUTTING REGION, AS WELL AS THE EXPERIMENTAL DETERMINATION OF CONSTANTS THAT ARE INTRODUCED TO THE USED CUTTING FORCE ANALYTICAL EXPRESSION. BY CALCULATING THE WEIGHT FUNCTIONS FROM THE MEASURED TRANSFER FUNCTIONS AND BY FADING THE MODEL WITH VALUES …
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