scholarly journals Analysis Of The Effect Of Slope Of The Scratch Side Angle Through The Post Tool On Surface Level Surface At The Working Tool Stermination ST 37

2019 ◽  
Vol 1 (2) ◽  
pp. 1-6
Author(s):  
Muhammad Farid Riza ◽  
Yufrizal A ◽  
Nofri Helmi
Keyword(s):  
Surface Roughness ◽  
Cutting Speed ◽  
Level Surface ◽  
Cutting Depth ◽  
Surface Level ◽  
Cutting Angle ◽  
Incision Angle ◽  
The Right ◽  
Constant Feeding ◽  
Tool Angle

The purpose of this research is to see the effect of slope of incision angle chisel through Tool Post to roughness of surface of object. The method used is a lathe ST 37, with 0.5 mm cutting depth, with side angle cutting angle by tilting the Post Tool, ie: 10˚ tilted to the left, 10˚ tilted right, 0˚ (perpendicular), 5˚ tilted right, and 5˚ tilted left. Feeding (constant feeding) is: 0.281 mm / rotation, main cutting corner of chisel 80˚ and cutting speed = 740 rpm. Then the workpiece measured the surface roughness by using Surface Tester Mitutoyo SJ-201P. The result showed that, the smallest surface roughness rate achieved was (ΣRap) = 7, 42 μm with N9 surface roughness class with the Post Tool angle 5 ° to the left. While the largest surface roughness rate achieved is (ΣRap) = 13, 76 μm with the surface roughness class N11 with the tool angle post 10 ° to the right. The value of the roughness level achieved is between N9 - N11.

A Prediction Model of Surface Roughness in Micro End Milling

2015 ◽  
Vol 727-728 ◽  
pp. 354-357
Author(s):  
Mei Xia Yuan ◽  
Xi Bin Wang ◽  
Li Jiao ◽  
Yan Li
Keyword(s):  
Surface Roughness ◽  
Prediction Model ◽  
Feed Rate ◽  
End Milling ◽  
Orthogonal Experiment ◽  
Cutting Speed ◽  
Cutting Parameters ◽  
Micro Milling ◽  
Cutting Depth ◽  
Micro End Milling

Micro-milling orthogonal experiment of micro plane was done in mesoscale. Probability statistics and multiple regression principle were used to establish the surface roughness prediction model about cutting speed, feed rate and cutting depth, and the significant test of regression equation was done. On the basis of successfully building the prediction model of surface roughness, the diagram of surface roughness and cutting parameters was intuitively built, and then the effect of the cutting speed, feed rate and cutting depth on the small structure surface roughness was obtained.

Research on the Cutting Fluid Effect on Cutting Force and Surface Roughness in Rotor Milling

2012 ◽  
Vol 723 ◽  
pp. 50-55
Author(s):  
Jian Lu Wang ◽  
Liang Liang Wu ◽  
Jun Zhang ◽  
Wan Hua Zhao ◽  
Yi Fei Jiang ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Cutting Force ◽  
Design Method ◽  
Uniform Design ◽  
Cutting Speed ◽  
Cutting Parameters ◽  
Cutting Fluid ◽  
Cutting Depth ◽  
Multivariable Regression ◽  
Uniform Design Method

A series of milling experiments with and without cutting fluid, arranged by uniform design method, were carried out on rotor material. The influence of cutting fluid on cutting force and surface roughness was explored and compared for the two kinds of conditions. The associated model was established between cutting force & surface roughness and cutting parameters according to the linear multivariable regression method. The results show that the cutting force deceases with the increase of the cutting speed or with the decrease of the feed per tooth and the cutting depth. Cutting fluid has little effect on cutting force, and for surface roughness, the influence of cutting fluid is uncertain.

Study on the Critical Cutting Thickness and the Precision Cutting Experiments of Isotropic Pyrolyric Graphite

2011 ◽  
Vol 228-229 ◽  
pp. 458-463
Author(s):  
Ming Hai Wang ◽  
Hu Jun Wang ◽  
Zhong Hai Liu
Keyword(s):  
Surface Roughness ◽  
High Temperature ◽  
Prediction Model ◽  
Feed Rate ◽  
Cutting Speed ◽  
Carbon Composite ◽  
Cutting Depth ◽  
Brittle Ductile Transition ◽  
Roughness Prediction ◽  
Turbine Shaft

Isotropic pyrolyric graphite (IPG) is a new kind of brittle material, it not only has the general advantages of ordinal carbonaceous materials such as high temperature resistance, lubrication and abrasion resistance, but also has the advantages of impermeability and machinability that carbon/carbon composite doesn’t have. So it can be used for sealing the aeronautics and astronautics engines turbine shaft and the ethylene high-temperature equipment. The mechanism of this material removal during the precision cutting was analyzed by using the theory of strain gradient. The critical cutting thickness of IPG was calculated for the first time. Furthermore, the cutting process parameters such as cutting depth and feed rate which corresponding to the scale of brittle-ductile transition deformation of IPG was calculated. The prediction model of surface roughness in precision cutting of IPG was developed based on the Genetic algorithm. Using the surface roughness prediction model, the study investigates the influence of the cutting speed, the feed rate and the cutting depth on surface roughness in precision turning process was researched.

Experiment Study of Serrated Chip and Surface Roughness of High Speed Cutting of Ti6Al4V

2014 ◽  
Vol 800-801 ◽  
pp. 571-575
Author(s):  
Guo He Li ◽  
Yu Jun Cai ◽  
Hou Jun Qi
Keyword(s):  
Surface Roughness ◽  
High Speed ◽  
Cutting Speed ◽  
Rake Angle ◽  
Adiabatic Shear ◽  
Cutting Condition ◽  
Experiment Study ◽  
Cutting Depth ◽  
Serrated Chip ◽  
High Speed Cutting

Under the condition of cutting speed 10-300m/min, rake angle -10°、0°、10°and cutting depths 0.05mm、0.1mm and 0.2mm, the experiment study of adiabatic shear serrated chip and surface roughness are carried out. The influence of cutting condition on serrated chip is analyzed through the metallographic observation of obtained chip. By the measurement of finished surface, the influenc of cutting condition and adiabatic shear on surface roughness is also investigated. The rusults show that the reason lead to serrated chip in high speed cutting of Ti6Al4V is adiabatic shear, not the periodic fracture.The adiabatic shear serrated chip is easier appear and the degree of segment is more large under the condition of higher cutting speed, larger cutting depth and smaller rake angle. The surface roughness is smaller when the cutting speed is higher, cutting depth is larger, and rake angle is smaller.

scholarly journals Experimental Investigation of the influence of the Cutting Conditions on the Surface Roughness in Hole turning the SCM400 Steel

2019 ◽  
Vol 4 (8) ◽  
pp. 11-14
Author(s):  
Nguyen Hong Son ◽  
Hoang Xuan Thinh ◽  
Nhu-Tung Nguyen ◽  
Do Duc Trung
Keyword(s):  
Surface Roughness ◽  
Experimental Investigation ◽  
Experimental Design ◽  
Feed Rate ◽  
Cutting Speed ◽  
Orthogonal Matrix ◽  
Cutting Conditions ◽  
Cutting Depth ◽  
Part Surface

This paper presented the experimental results about investigation of the influence of the cutting conditions on the surface roughness when hole turning the SCM400 steel. Three cutting paramesters that have mentioned in this study included cutting speed, axial feed rate, and cutting depth. The experimental design was chosen following the orthogonal matrix and added the center experiment points. The analyzed results show that the axial feed rate has the greatest degree of impact on the surface roughness. And, the second and third factors have negligible effect on the surface roughness that are cutting speed and cutting depth, respectively. These results will guide the determination of the cutting conditions in order to machining the part surface with roughness that was ensured the setting requirement. Finally, the directions for further research were also mentioned in this paper.

Study on Surface Roughness of Milling In-Situ TiB2 Particle Reinforced Al Matrix Composites

2019 ◽  
Author(s):  
Xiao-fen Liu ◽  
Wen-hu Wang ◽  
Rui-song Jiang ◽  
Yi-feng Xiong ◽  
Kun-yang Lin ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Surface Quality ◽  
Feed Rate ◽  
Metal Matrix ◽  
Cutting Speed ◽  
Cutting Parameters ◽  
Matrix Composites ◽  
Cutting Depth

Abstract The current state of surface roughness focuses on the 2D roughness. However, there are shortcomings in evaluating surface quality of particle reinforced metal matrix composites using 2D roughness due to the fact that the measuring direction has a vital impact on the 2D roughness value. It is therefore of great importance and significance to develop a proper criterion for measuring and evaluating the surface roughness of cutting particle reinforced metal matrix composites. In this paper, an experimental investigation was performed on the effect of cutting parameters on the surface roughness in cutting in-situ TiB2/7050Al MMCs. The 2D roughness Ra, 3D roughness Sa and Sq were comparatively studied for evaluating the machined surface quality of in-situ TiB2/7050Al MMCs. The influence of cutting parameters on the surface roughness was also analyzed. The big difference between roughness Ra measured along cutting and feed directions showed the great impact of measuring direction. Besides, surface defects such as pits, grooves, protuberances and voids were observed, which would influence 2D roughness value greatly, indicating that 3D roughness was more suitable for evaluating surface quality of cutting in-situ TiB2/7050Al MMCs. The cutting depth and feed rate were found to have the highest influence on 3D roughness while the effect of cutting speed was minimal. With increasing feed rate, cutting depth or width, the 3D roughness increased accordingly. But it decreased as cutting speed increased.

Study on the Cutting Properties about Magnesium Alloy when Dry Turning with Kentanium Cutting Tools

2010 ◽  
Vol 102-104 ◽  
pp. 653-657 ◽  
Author(s):  
Xu Hong Guo ◽  
Li Jun Teng ◽  
Wei Wang ◽  
Ting Ting Chen
Keyword(s):  
Surface Roughness ◽  
Magnesium Alloy ◽  
Tool Wear ◽  
Cutting Force ◽  
Feed Rate ◽  
Cutting Tools ◽  
Cutting Speed ◽  
Cutting Depth ◽  
Dry Turning ◽  
Main Influence

In recent years, the machinability of magnesium alloy is concerned more and more by the public. In this paper, a study on the cutting properties of magnesium alloy AZ91D when dry turning with kentanium cutting tools is presented. It shows the cutting force measured by a data acquisition system which is made up of Kistler9257B piezoelectric crystal sensor dynamometer, Kistler5070A10100 charge amplifier and computer. The effect of cutting parameters on cutting force was studied, and the experimental formula was built. The tool wear and chip characteristics were observed with KYKY-EM3200 electron scanning microscope and EDAX PV9900 alpha ray spectrometer, while the surface roughness of the workpiece was measured with 2205 profilometer. Results showed that the cutting depth was the main influence factor on cutting force, followed by feed rate and cutting speed . The main form of tool wear showed to be diffusive wear and adhesive wear. The feed rate had the main influence on chip form and the workpiece surface roughness, cutting speed was less effective, the cutting depth was the least.

Investigating the Effect of Cutting Speed Variation on Surface Roughness of 7136 Aluminum Alloy in End Milling

2015 ◽  
Vol 809-810 ◽  
pp. 129-134 ◽  
Author(s):  
Alina Bianca Bonţiu Pop ◽  
Mircea Lobonţiu
Keyword(s):  
Surface Roughness ◽  
Aluminum Alloy ◽  
Metal Cutting ◽  
End Milling ◽  
Cutting Speed ◽  
Processing Parameters ◽  
Milling Process ◽  
Future Research ◽  
Cutting Depth ◽  
Speed Variation

Surface quality is affected by various processing parameters and inherent uncertainties of the metal cutting process. Therefore, the surface roughness anticipation becomes a real challenge for engineers and researchers. In previous researches [1] I have investigated the feed rate influence on surface roughness and manufacturing time reduction. The 7136 aluminum alloy was machined by end milling operation using standard tools for aluminum machining. The purpose of this paper is to identify by experiments the influence of cutting speed variation on surface roughness. The scientific contribution brought by this research is the improvement of the end milling process of 7136 aluminum alloy. This material is an aluminum alloy developed by Universal Alloy Corporation and is used in the aircraft industry to manufacture parts from extruded profiles. The research method used to solve the problem is experiment. A range of cutting speeds was used while the cutting depth and the feed per tooth were constrained per minimum and maximum requirements defined for the given cutting tool. The experiment was performed by using a 16 mm End milling cutter, holding two indexable cutting inserts. The machine used for the milling tests was a HAAS VF2 CNC. The surface roughness (response) was measured by using a portable surface roughness tester (TESA RUGOSURF 20 Portable Surface Finish Instrument). Following the experimental research, results were obtained which highlight the cutting speed influence on surface roughness. Based on these results we created roughness variation diagrams according to the cutting speed for each value of feed per tooth and cutting depth. The final results will be used as data for future research.

Experimental Investigations of Cutting Conditions Influence on Main Cutting Force and Surface Roughness Based on Chip Form Types in Cast Nylon Turning

2011 ◽  
Vol 110-116 ◽  
pp. 3563-3569 ◽  
Author(s):  
Bandit Suksawat
Keyword(s):  
Surface Roughness ◽  
Cutting Force ◽  
Feed Rate ◽  
Causal Effect ◽  
Cutting Speed ◽  
High Speed Steel ◽  
Cutting Conditions ◽  
Depth Of Cut ◽  
Path Coefficient ◽  
Cutting Depth

This paper aims to investigate cutting conditions influence on main cutting force and surface roughness based on considered chip form types in cast nylon turning operation with single-point high speed steel cutting tool. The 75 experiments were performed by average of three levels of cutting speed, five levels of cutting depth and five levels of feed rate. The results reveal that main cutting forces were increased by an increasing of cutting speed and cutting depth for all obtained chip form types for all chip form types. The surface roughness is affected by increasing of feed rate and reduction of cutting speed for 2.3 Snarled and 4.3 Snarled chip form types. The statistical path-coefficient analysis results are shown that the main cutting force affected by cutting speed, depth of cut and feed rate with total causal effect value of 0.5537, 0.4785 and 0.1718, respectively. The surface roughness is influenced by feed rate, cutting speed and depth of cut with 0.8400, -0.2419 and-0.0711 of total causal effect value, respectively. These results are useful to perform varying cutting conditions for high quality of workpiece in cast nylon turning by control the chip form type.

scholarly journals PENGARUH PARAMETER PEMESINAN TERHADAP KEKASARAN PERMUKAAN MATERIAL ALUMINIUM 6061 DAN 7075 PADA PROSES SEKRAP

2020 ◽  
Vol 4 (1) ◽  
pp. 145
Author(s):  
M. Sobron Yamin Lubis ◽  
Abrar Riza ◽  
Dani Putra Agung
Keyword(s):  
Surface Roughness ◽  
Aluminum Alloy ◽  
Aluminium Alloy ◽  
Cutting Speed ◽  
Machining Process ◽  
Machining Parameters ◽  
Cutting Depth ◽  
Surface Conditions ◽  
Surface Test ◽  
Alloy 6061

Aluminum Alloy metal is widely used in making lightweight construction on machinery. To produce a flat metal alluminium alloy surface, a shearing machine is needed. There are two types of aluminum materials that are commonly used, namely Aluminum 6061 and 7075. In the process of forming metals using a scrap machine, it is important to determine the machining parameters because this is closely related to the surface conditions of the workpiece produced. Difficulties in determining the appropriate combination of machining parameters often result in work surface conditions that are not as expected or have a high roughness. With the right parameters, the quality of surface roughness can be predicted as planned before the machining process. The cutting parameters are cutting speed and cutting depth. In this study the cutting speed used varied, namely 4.68 m / min, 7.30 m / min, 11.70 m / min, 18.29 m / min with a cutting depth of 0.50 mm, 1.00 mm and 1 , 50 mm, to cut aluminum 6061 and 7075 using the HSS chisel. In the initial step, do the machine tool settings, place the chisel on the chisel holder, place the workpiece in vise, adjust the cutting speed, depth of feed, and perform machining. After machining, a surface roughness measurement is carried out using a surface test. From the results of the study it was found that the value of surface roughness is directly proportional to the depth of cut. The value of surface roughness is inversely proportional to cutting speed and hardness of the material. Determination of cutting speed through empirical equations based on surface roughness: aluminum alloy 6061 is: Ra = 23,366e-0,146Vc (µm) and aluminum alloy 7075 are: Ra = 13,482e-0.109Vc (µm). ABSTRAK Bahan logam aluminium Alloy banyak digunakan dalam pembuatan konstruksi ringan pada mesin-mesin. Untuk menghasilkan permukaan logam alluminium alloy yang rata, maka diperlukan mesin sekrap. Terdapat dua jenis material aluminium yang umum digunakan yaitu Aluminium 6061 dan 7075. Pada proses pembentukan logam dengan menggunakan mesin sekrap, adalah penting untuk menentukan parameter pemesinan  Karena hal ini berkaitan erat dengan kondisi permukaan benda kerja yang dihasilkan. Kesulitan dalam menentukan kombinasi parameter pemesinan yang sesuai seringkali mengakibatkan kondisi permukaan benda kerja kerja yang tidak sesuai diharapkan atau memiliki kekasaran yang tinggi. Dengan parameter yang tepat, kualitas kekasaran permukaan dapat diprediksi seperti yang direncanakan sebelum proses pemesinan. Parameter pemotongan tersebut adalah kecepatan pemotongan dan kedalaman potong. Pada penelitian ini kecepatan pemotongan yang digunakan bervariasi yaitu 4,68 m/min,7,30 m/min, 11,70 m/min,18,29 m/min dengan kedalaman pemotongan 0,50 mm,1,00 mm dan 1,50 mm, untuk memotong aluminum  6061 dan 7075 dengan menggunakan mata pahat HSS.. Pada langkah awali dilakukan setting mesin perkakas, meletakkan mata pahat pada pemegang mata pahat, meletakkan benda kerja pada ragum, melakukan settingg untuk kecepatan pemotongan, kedalaman pemakanan, dan melakukan pemesinan. Setiap kali selesai pemesinan, dilakukan pengukuran kekasaran permukaan dengan menggunakan alat ukur surface test. Dari hasil penelitian diperoleh bahwa nilai kekasaran permukaan berbanding lurus dengan kedalaman potong. Nilai kekasaran permukaan berbanding terbalik dengan kecepatan potong dan kekerasan material. Penentuan kecepatan potong melalui  persamaan empiris  berdasarkan kekasaran permukaan:  aluminium alloy 6061 adalah:  Ra = 23.366e-0.146Vc(µm) dan aluminium alloy 7075 adalah:  Ra = 13.482e-0.109Vc(µm).

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