Technology of forming accurate apertures of high surface finish in nonferrous alloy components

1976 ◽  
Vol 10 (5) ◽  
pp. 687-688
Author(s):  
Yu. A. Alimov ◽  
E. F. Balabanov
Keyword(s):  
Surface Finish ◽  
High Surface ◽  
Nonferrous Alloy

scholarly journals A Review Paper on Modification in Worktable of Belt Grinder

2021 ◽  
Vol 9 (VII) ◽  
pp. 1550-1552
Author(s):  
Vatsal P. Patel
Keyword(s):  
Surface Finish ◽  
Final Stage ◽  
Cutting Tool ◽  
Review Paper ◽  
High Surface ◽  
Machining Process ◽  
Abrasive Wheel ◽  
High Surface Quality ◽  
Finishing Process ◽  
Grinding Machine

In most of the industries grinding is the final stage of finishing process. Grinding is a machining process which uses an abrasive wheel or belt type cutting tool. This grinding machine is used in various industries for finishing of work pieces and give high surface quality. Grinding with wheel or belt type cutting tool is used for different precision applications such as deburring in foundries and constructions, polishing, engraving and cut-off grinding. Our project provides flexible worktable through which angular grinding with better surface finish can be obtain. Also less force is generated through this arrangement which in turn provides firm gripping.

Design and Testing of a Micro-Dynamometer for Desktop Micro-Milling Machine

2014 ◽  
Vol 902 ◽  
pp. 267-273 ◽  
Author(s):  
Samir Mekid
Keyword(s):  
Surface Finish ◽  
Cutting Forces ◽  
High Speed ◽  
High Surface ◽  
Chip Thickness ◽  
Micro Milling ◽  
High Tech ◽  
Machining Accuracy ◽  
Microscopic Features ◽  
Better Than

The emerging miniaturized high-tech products are required to have increased functionalities of systems within a volumetric size on the order of 1 cm3. Hence, the parts are mesoscopic with complex microscopic features of a few mm length with machining accuracy of better than 1 micrometer with secured surface integrity as components will require high surface finish, tensile stress and crack free surfaces in order to function reliably. One of the characteristics to be measured is the cutting forces on the parts being machined. This paper will present the design, manufacture and testing of a miniature dynamometer capable of measuring cutting forces within a low range of 50N but with a resolution better than 1 mN and high frequency since the micromachining involves small cutting forces but the spindle rotates at high speed. The dynamometer is capable of measuring forces in five directions (±x, ±y, and z). The instrument was calibrated and exhibit very good results leading to a true validation. This instrument is assembled on a micro milling desktop machine designed in-house. It will not only support predicting the surface finish and chip thickness but also monitoring tool wear evolution and hence prevents/reduce tool breakage known to be one of the main issues in micro-milling.

scholarly journals Investigating Optimum SiO2 Nanolubrication During Turning of AISI 420 SS

2019 ◽  
Vol 9 (1) ◽  
pp. 3822-3825
Author(s):  
N. M. M. Reddy ◽  
P. K. Chaganti
Keyword(s):  
Surface Roughness ◽  
Surface Finish ◽  
Input Parameter ◽  
High Surface ◽  
Turbine Blades ◽  
Cutting Temperature ◽  
Cutting Fluid ◽  
Silicon Dioxide Nanoparticles ◽  
Aisi 420 ◽  
Steel Balls

AISI 420 martensitic stainless steel is used for making gas and steam turbine blades, steel balls and medical instruments, due to its anti-corrosive properties. Turning of AISI 420 SS would be a worthy procedure specifically in manufacturing high surface finish parts. In this work, effort has been made to investigate the cooling and lubricating performance of SiO2 (silicon dioxide) nanoparticles at different weight concentrations of 0.1g, 0.5g and 1g mixed in a novel developed base fluid (synthetic). The performance of optimum SiO2 based cutting fluid is evaluated based on the turning process with output responses like surface finish and cutting temperature. Taguchi technique was used with standard L9(3**4) orthogonal array. The responses, surface roughness, and cutting temperature were analyzed using S/N (signal-to-noise) and ANOVA (analysis of variance). This analysis identifies the significant input parameter combination to obtain minimum surface roughness and temperature.

A Comprehensive Review on Magnetic Abrasive Finishing Process

2016 ◽  
Vol 18 ◽  
pp. 1-20 ◽  
Author(s):  
Mohannad Naeem Houshi
Keyword(s):  
Surface Finish ◽  
Low Cost ◽  
High Surface ◽  
Functional Requirements ◽  
Workpiece Surface ◽  
Magnetic Abrasive Finishing ◽  
Finishing Process ◽  
Abrasive Finishing ◽  
Superior Surface ◽  
Finishing Processes

In the nanotechnology era, the need for products with high quality and surfaces with free-from damage has become an urgent necessity. Many components in the precision industries such as electronics, automobile, medical, and aviation require high surface finish to meet their functional requirements, such as, reducing fluid flow resistance, friction, optical losses and increase fatigue strength. However, the scale of such surface quality cannot be achieved by traditional finishing methods. To overcome these limitations, many advanced finishing processes have been developed such as abrasive flow finishing, magnetorheological fluid finishing, magnetic float polishing, and chemical mechanical polishing and magnetic abrasive finishing. Magnetic abrasive finishing (MAF) is one of advanced finishing processes which offers superior surface finish over conventional finishing processes, because of its self-adaptability to finish of different geometric shapes, its a gentle tool which does not impact workpiece surface, its capability to polish advanced engineering materials and its low cost. This article has been focused on MAF, as well as reviewing of advanced finishing processes. The recent researches and challenges of MAF have been discussed as well.

scholarly journals Electrical Discharge Machining of Al2O3 and Si3N4 Ceramics; A Research

2019 ◽  
Vol 8 (2S8) ◽  
pp. 1806-1808
Keyword(s):  
Surface Finish ◽  
Electrical Discharge ◽  
Electrical Discharge Machining ◽  
Removal Rate ◽  
High Surface ◽  
High Hardness ◽  
Ceramic Materials ◽  
Machining Process ◽  
Low Efficiency ◽  
Edm Process

Ceramic materials which have high hardness and brittleness cannot be machined by traditional machining process because of their low efficiency and feasibility. But in non-traditional machining process, it overcomes these limitations proving it to be very useful in manufacturing process. In this review paper we are discussing about electrical discharge machining (EDM) process on Al2O3 and Si3N4 ceramic materials which are machine able. EDM parameters like material removal rate (MRR), tool wear rate (TWR), surface finish are discussed. EDM is very much suitable for ceramic materials because of its high surface finish, accuracy and efficiency.

Dynamic In-Process Stock Based Tool Path Generation for High Surface Finish Rough Machining

2013 ◽  
Vol 567 ◽  
pp. 59-65
Author(s):  
Song Lin Ding ◽  
John P.T. Mo ◽  
Daniel Yang
Keyword(s):  
Surface Finish ◽  
Process Model ◽  
Tool Path ◽  
High Surface ◽  
Tool Path Generation ◽  
Path Generation ◽  
Rough Machining ◽  
Machining Time ◽  
Additional Tool ◽  
Tool Paths

This paper presents a new tool path generation strategy for rough machining based on the dynamic in-process stock model of the workpiece. Compared to conventional roughing method, the new tool paths result in a better surface finish but consume the same machining time. The cutter locations in the tool path are determined by removing the peak portion of the residual materials on the stock. The geometric information of remaining stocks is updated dynamically in the in-process model once each cutting pass is completed. The overall machining time is no longer than the conventional method since no additional tool paths are added. The proposed method was implemented in Catia and has been validated by simulation and cutting tests with flat end and ball nose cutters on a 3-axis CNC milling machine.

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