Amir Alinaghizadeh Articles List

List of Articles Amir Alinaghizadeh

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1 - Parameters change effect of cutting tool diameter, depth of cut and feed rate in the process of turbine blade 4 axis milling on the roughness and surface texture
Amir Alinaghizadeh Behrouz Norouzi Ali Farahmandi

Always in the production of turbine blades tried use less of secondary operations. Such as for increasing the quality of surface finishing that reduces the level of geometric accuracy. Accordingly in this paper, improvement of roughness and surface texture turbine blade More

Always in the production of turbine blades tried use less of secondary operations. Such as for increasing the quality of surface finishing that reduces the level of geometric accuracy. Accordingly in this paper, improvement of roughness and surface texture turbine blade directly with the optimization of machining parameters is been studied. Variable parameters of this research include tool diameter, depth of cut and feed rate. Experimental work by using a four-axis CNC milling machine was done on turbine blade aluminum. Experimental work by using four-axis CNC milling machine and the turbine blade was aluminum. Design of experimental was full factorial and All permutations of variable parameters been implemented. The surface roughness of machined areas by using surface roughness tester and the texture was examined using a stereo microscope. By using roughness tester, surface roughness of machined areas was measured. Form of surface texture was examined by a stereo microscope. Finally, by comparing data the best mode was introduced. Manuscript profile
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2 - Effect of Ball Screw linear expansion of linear axes on the movement of rotary axes and workpiece geometric accuracy in five-axis CNC milling machine with rotational head and RTCP active option
Amir Alinaghizadeh Meysam Khaki

During machining a portion of the heat generated by operation activities edges of cutting tool relative to the workpiece is transferred to machine tool, and in addition, the friction generated in continuous motion of Ball Screw and the Nut that Due to shift of axis mach More

During machining a portion of the heat generated by operation activities edges of cutting tool relative to the workpiece is transferred to machine tool, and in addition, the friction generated in continuous motion of Ball Screw and the Nut that Due to shift of axis machine is created, causing the expansion of the Ball Screw size will be. Because of the length of the high ratio of length to diameter, expansion of the length of Ball Screw to be important. Because after every movement applied to in the NC, according to the size difference between the previous program and the current line, in addition to the original displacement, had done an additional displacement due to the expansion of the Ball Screw. Machines CNC five-axis, in addition to the direct impact of linear expansion length of Ball Screw linear axes for the accuracy of the workpiece geometry, the indirect effect are also considering option RTCP (Rotation Tool Center Point), to move the axis rotary is shown. The RTCP active, the center of cutting tool is fixed in space instead of, the center of the rotary axes are moving. In this case, to compensate for displacement of cutting tool, In effect movement the rotary axes, linear axes will be moved. In this paper, directly or indirectly effect of Ball Screw linear expansion on the workpiece geometric accuracy studied using analytical-mathematical And the results can be compared with the adaptive control as five-axis CNC machines used in the paper. Manuscript profile
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3 - Investigation and Optimization Of the Parameters Affecting the Strength Of Nd:YAG Pulsed Laser Spot Welding in Steel Sheet Using Design Of Expriment
Abbasali Habibollahi Nasrollah Bani mostafa Arab Ali Dehghani Amir Alinaghizadeh

Welding plays an important role in manufacturing and it is a reliable and efficient joining process in which the coalescence of metals is achieved by fusion. Nowdays welding is as the main and most common process for joint of metals. Among the welding methods, Laser Bea More

Welding plays an important role in manufacturing and it is a reliable and efficient joining process in which the coalescence of metals is achieved by fusion. Nowdays welding is as the main and most common process for joint of metals. Among the welding methods, Laser Beam Welding) has the potential of welding very small and precise components. Localized heating with solidification of the melt, makes the connection between parts. In this thesis, laser spot welding process, which is one of the varieties of LBW process, is studied. In fact the laser spot welding is a simple type of laser welding that is widely used in various industries. The low strength of joints can damage structures. Therefore it is important that the strength of the joint be estimated and optimized. In this research, investigation and optimization of the laser spot welding process using design of experiments and response surface method is considered. Three parameters (peak power, pulse duration and thickness) of the process at three levels were the input factors. Material of sheets that was used in this research is AISI 304 stainless steel. The response or output factor was tensile - shear strength. Minitab16 software was used for design of experiments and analysis of the results. Finally, results showed that increase the peak power until 4250 watt and pulse duration until 3/5 millisecond provide the most tensile - shear strength (2200 Kg), and Square of thickness has the most negative effect on tensile shear strength of the joint. Manuscript profile
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4 - Experimental investigation on the effect of resistance projection welding parameters on weld joint torque strength of nut to sheet
Nasrollah Bani mostafa Arab Amir Alinaghizadeh Ali Dehghani

Nowadays welding is the most important and the most common joining processfor Metals (and sometimes other metals). Among the existing methods for welding, ressistance welding uses heat and pressure simultaneously, In this thesis, effect of the process parameters on tors More

Nowadays welding is the most important and the most common joining processfor Metals (and sometimes other metals). Among the existing methods for welding, ressistance welding uses heat and pressure simultaneously, In this thesis, effect of the process parameters on torsional strength of resistance projection welds in sheet metal and nut with different thickness has been investigated. Welding time, welding current and electrode force are the most important factors affecting the quality of a the weld. The Minitab16 software and response surface method have been used to conduct experiments to find the effect of the above parametrs on torsional strength. Manuscript profile

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List of Articles Amir Alinaghizadeh