Grinding Grinding Is the Most Common Form of Abrasive Machining. It Is Acutting Process Which Engages an Abrasive Tool Whose
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Machining Online Manufacturing Training
MACHINING ONLINE MANUFACTURING TRAINING MACHINING FUNDAMENTALS 5S Overview Cutting Processes Hole Standards and Inspection Math: Fractions and Decimals Thread Standards and Inspection Band Saw Operation Essentials of Heat Treatment of Steel Intro to OSHA Metal Cutting Fluid Safety Trigonometry: Sine, Cosine, Tangent Basic Cutting Theory Ferrous Metals Introduction to Mechanical Properties Noise Reduction/Hearing Conservation Units of Measurement Basic Measurement Fire Safety and Prevention Introduction to Metal Cutting Fluids Overview of Machine Tools Walking and Working Surfaces Basics of Tolerance Geometry: Circles and Polygons ISO 9001: 2015 Review Personal Protective Equipment Bloodborne Pathogens Geometry: Lines and Angles Lean Manufacturing Overview Powered Industrial Truck Safety Blueprint Reading Geometry: Triangles Lockout/Tagout Procedures Safety for Lifting Devices Calibration Fundamentals Hand and Power Tool Safety Math Fundamentals SDS and Hazard Communication GRINDING TECH Basic Grinding Theory Cylindrical Grinder Operation Grinding Variables Major Rules of GD&T Supporting and Locating Principles Basics of G Code Programming Dressing and Truing Grinding Wheel Geometry Metrics for Lean Surface Grinder Operation Basics of the Centerless Grinder Essentials of Communication Grinding Wheel Materials Process Flow Charting Surface Texture and Inspection Basics of the Cylindrical Grinder Essentials of Leadership Intro to Fastener Threads Setup for the Centerless Grinder Troubleshooting Basics of the Surface Grinder Grinding Ferrous -
Review of Superfinishing by the Magnetic Abrasive Finishing Process
High Speed Mach. 2017; 3:42–55 Review Article Open Access Lida Heng, Yon Jig Kim, and Sang Don Mun* Review of Superfinishing by the Magnetic Abrasive Finishing Process DOI 10.1515/hsm-2017-0004 In the conventional lapping process, loose abrasive Received May 2, 2017; accepted June 20, 2017 particles in the form of highly-concentrated slurry are of- ten used. The finishing mechanism then involves actions Abstract: Recent developments in the engineering indus- between the lapping plate, the abrasive, and the work- try have created a demand for advanced materials with su- piece, in which the abrasive particles roll freely, creating perior mechanical properties and high-quality surface fin- indentation cracks along the surface of the workpiece, ishes. Some of the conventional finishing methods such as which are then removed to finally achieve a smoother sur- lapping, grinding, honing, and polishing are now being re- face [1]. The lapping process typically is not used to change placed by non-conventional finishing processes. Magnetic the dimensional accuracy due to its very low material re- Abrasive Finishing (MAF) is a non-conventional superfin- moval rate. Grinding, on the other hand, is used to achieve ishing process in which magnetic abrasive particles inter- the surface finish and dimensional accuracy of the work- act with a magnetic field in the finishing zone to remove piece simultaneously [2]. In grinding, fixed abrasives are materials to achieve very high surface finishing and de- used by bonding them on paper or a plate for fast stock burring simultaneously. In this review paper, the working removal. -
Gear Cutting and Grinding Machines and Precision Cutting Tools Developed for Gear Manufacturing for Automobile Transmissions
Gear Cutting and Grinding Machines and Precision Cutting Tools Developed for Gear Manufacturing for Automobile Transmissions MASAKAZU NABEKURA*1 MICHIAKI HASHITANI*1 YUKIHISA NISHIMURA*1 MASAKATSU FUJITA*1 YOSHIKOTO YANASE*1 MASANOBU MISAKI*1 It is a never-ending theme for motorcycle and automobile manufacturers, for whom the Machine Tool Division of Mitsubishi Heavy Industries, Ltd. (MHI) manufactures and delivers gear cutting machines, gear grinding machines and precision cutting tools, to strive for high precision, low cost transmission gears. This paper reports the recent trends in the automobile industry while describing how MHI has been dealing with their needs as a manufacturer of the machines and cutting tools for gear production. process before heat treatment. A gear shaping machine, 1. Gear production process however, processes workpieces such as stepped gears and Figure 1 shows a cut-away example of an automobile internal gears that a gear hobbing machine is unable to transmission. Figure 2 is a schematic of the conven- process. Since they employ a generating process by a tional, general production processes for transmission specific number of cutting edges, several tens of microns gears. The diagram does not show processes such as of tool marks remain on the gear flanks, which in turn machining keyways and oil holes and press-fitting bushes causes vibration and noise. To cope with this issue, a that are not directly relevant to gear processing. Nor- gear shaving process improves the gear flank roughness mally, a gear hobbing machine is responsible for the and finishes the gear tooth profile to a precision of mi- crons while anticipating how the heat treatment will strain the tooth profile and tooth trace. -
Big Performance
AUGUST 2008 / VOLUME 60 / ISSUE 8 All images: Sunnen Products A motorcycle connecting rod is honed to a diameter of 1.4173", +0.0001"/-0.0003", with roundness of 0.00008", straightness of 0.00004" and cylindricity of 0.0001". Small Engines, By Rich Moellenberg, Sunnen Products Co. Big Performance Honing of cylinder bores improves sealing and component life to help small internal combustion engines increase power density and reduce exhaust emissions. changing federal regulatory climate that targets their big brothers on the NASCAR circuit, these reduced emissions and noise has led to a con- engines are also beginning to share a performance- vergence of design goals for both small internal enhancing technology used for racecar and most combustion engines and automotive engines other auto engines—honing. Honing optimizes the in the last decade. Today, small-engine OEMs cylinder bore’s geometry, surface finish and dimen- are striving for higher power densities (producing sional accuracy, boosting power density, extending more horsepower and torque from an engine with life and lowering emissions. the same physical size), lower fuel consumption and The fit between the piston and bore, along with lower emissions, all while controlling costs. the quality of the surface contact between the two, Engines for outdoor power equipment, ATVs, influences power output, combustion efficiency, snowmobiles, motorcycles and outboard motors, emissions, component life and vibration. The pre- along with many piston-type air and refrigeration cision of bore geometry (roundness, straightness, compressors, share a common operating principle— cylindricity and diameter) and surface finish play a piston reciprocates in a cylinder bore. -
Grinding Machines
GRINDING MACHINES www.fermatmachinetool.com CYLINDRICAL GRINDING MACHINES FERMAT FAST FACTS CONTENT FERMAT MACHINE TOOL LTD CYLINDRICAL GRINDING MACHINES 650 Number of employees TOP SIEMENS Seller COMPANY INFORMATION .................................... 4 About the company FERMAT CYLINDRICAL GRINDING MACHINES ...................... 8 BHC / BHC HD CYLINDRICAL GRINDING MACHINES ...................... 12 BHCR / BHCR HD mill. NEW MODELS € 1901 CYLINDRICAL GRINDING MACHINES ...................... 16 78 Oldest member of FERMAT Group BHM / BHMR Annual sales in 2016 BASIC DESIGN ELEMENTS OF THE MACHINE .................. 23 Beds and Tables, Grinding Wheel Head, Work Head, Tailstock, Ball screws, Other Components, 8 Electric Equipment, Control Systems and Drives Branches in Czech Republic 100+ ACCESSORIES AND POSSIBLE OPTIONS....................... 28 Annual production/sold machines COMPONENTS ............................................... 34 ...................... CYLINDRICAL GRINDING MACHINES 36 BUC E BESTSELLERS CYLINDRICAL GRINDING MACHINES ...................... 38 5 BUB E Football playgrounds would 1 fit in floor space OTHER PRODUCTS ........................................... 40 of FERMAT Production facilities Table Type Horizontal Boring Mills, Micron (1 µm) has the most Floor Type Horizontal Boring Mills accurate production machine from our machining shop REFERENCES ................................................ 44 - - 2 3 - - ABOUT THE COMPANY ABOUT THE COMPANY FERMAT MACHINE TOOL LTD FERMAT MACHINE TOOL LTD Prague The FERMAT Group is a traditional Czech care. As a result, the FERMAT Group be- Manufacturing, servicing, upgrading lopment, design and construction with- manufacturer of machine tools. The prod- longs to the top machine tool manufactur- or complete overhauling of grinding in the strong FERMAT Group led to ex- uct portfolio consists primarily of grinding ers around the globe. machines are the key activities of the traordinary quality of our modern CNC machines as well as horizontal boring and FERMAT Machine Tool Ltd. -
Effect of Aluminum Oxide and Silicon Carbide Abrasive Type on Stainless Steel Ground Surface Integrity
EFFECT OF ALUMINUM OXIDE AND SILICON CARBIDE ABRASIVE TYPE ON STAINLESS STEEL GROUND SURFACE INTEGRITY MUHD SYAKIR BIN ABDUL RAHMAN Report submitted in partial fulfillment of the requirements for the award of Bachelor of Mechanical Engineering with Manufacturing Faculty of Mechanical Engineering UNIVERSITI MALAYSIA PAHANG DECEMBER 2010 ii SUPERVISOR’S DECLARATION I hereby declare that I have checked this project and in my opinion, this project is adequate in terms of scope and quality for the award of the degree of Bachelor of Mechanical Engineering. Signature: Name of Supervisor: DR. MAHADZIR BIN ISHAK @ MUHAMMAD Position: LECTURER OF MECHANICAL ENGINEERING Date: 6 DECEMBER 2010 iii STUDENT’S DECLARATION I hereby declare that the work in this report is my own except for quotations and summaries which have been duly acknowledged. The report has not been accepted for any degree and is not concurrently submitted for award of other degree. Signature: Name: MUHD SYAKIR BIN ABDUL RAHMAN ID Number: ME07013 Date: 6 DECEMBER 2010 v ACKNOWLEDGEMENTS In the name of Allah, the Most Benevolent, the Most Merciful. First of all I wish to record immeasurable gratitude and thankfulness to the One and The Almighty Creator, the Lord and Sustainers of the universe, and the Mankind in particular. It is only had mercy and help that this work could be completed and it is keenly desired that this little effort be accepted by Him to be some service to the cause of humanity. I would like to express my sincere gratitude to my supervisor DR. Mahadzir Bin Ishak @ Muhammad for his germinal ideas, invaluable guidance, continuous encouragement and constant support in making this research possible. -
Precision Guidance Needed for Metalworking Machinery That
Precision guidance needed for metalworking machinery that automatically grinds 40,000 sinks every year https://www.hepcomotion.com/case-studies/precision-guidance-needed-for-metalworking-machinery-that- automatically-grinds-40000-sinks-every-year/ INDUSTRY PRODUCT COUNTRY PROCESS GV3 - V Linear Manufacturing Germany Grinding Guide System Peitzmeier Maschinenbau machine builders based in Germany specialise in the construction of grinding machines. Their latest invention, the Omni-Grind Twin 3100 AC, enables automated grinding and polishing of workpieces in the metalworking industry. The machine builder relies on HepcoMotion’s GV3 guidance to prevent damage to the steel during processing; the linear guide system enables precise alignment of the grinding tool in the range of hundredths of a millimetre. The challenge: A major customer wants to precision grind 40,000 stainless steel sinks per year Among the users of Peitzmeier’s grinding machines is a Dutch manufacturer, who processes stainless steel sinks for a Swiss company. The design of the grinding machine had some challenging requirements, as Ulrich Peitzmeier, Managing Director of Peitzmeier explains: “The three-ton plant needed to be capable of grinding 40,000 sinks per year with extra care – the sinks are made from sheet metal just one millimetre thick. If a tool takes too long grinding material in one place, it can very quickly damage the workpiece.” Peitzmeier had to adapt their grinding machine to meet these requirements. The heavy grinding tool, usually mounted on a double-stranded U-rail, had to be replaced in favour of a lighter tool that could be aligned more precisely on just a single guide rail. -
Controls the Rotation and Longitudinal Motion of the Workpiece
CHAPTER 2- ABRASIVE GRINDING PROCESSES. LEARNING OBJECTIVES D Understand the types of different grinding machines D Techniques of grinding D Various application of grinding machines -------------------------------------------------------------------------------------------------------------------- Classification of Grinding Processes. Grinding machines can be best classified according to the type of surfaces they are used to produce. In order to bring the job to the required shape, size and surface finish the surplus stock is removed either by feeding the job against the revolving wheel or by forcing the revolving wheel against the job. Conventional grinding machines can be broadly classified as Surface grinding machine Cylindrical grinding machine Internal grinding machine Tool and cutter grinding machine SURFACE GRINDING MACHINE Basically there are four different types of surface grinding machines characterised by the movement of their tables and the orientation of grinding wheel spindles as follows: Horizontal spindle & reciprocating table Vertical spindle & reciprocating table Horizontal spindle & rotary table Vertical spindle & rotary table Figure 1: Horizontal spindle and reciprocating table Complied by: Jagdeesha T, Assistant Professor, Mech Engg Dept., National Institute of Technology, Calicut Figure 2: a) Transverse Grinding b) Plunge Grinding Vertical Spindle reciprocating table grinder This grinding machine with all working motions is shown in Fig. 3a. The grinding operation is similar to that of face milling on a vertical milling machine. In this machine a cup shaped wheel grinds the workpiece over its full width using end face of the wheel as shown in Fig 3b. This brings more grits in action at the same time and consequently a higher material removal rate may be attained than for grinding with a peripheral wheel. -
Geometric Modeling of Engineered Abrasive Processes Andres L
Rochester Institute of Technology RIT Scholar Works Articles 2005 Geometric Modeling of Engineered Abrasive Processes Andres L. Carrano Rochester Institute of Technology James B. Taylor Rochester Institute of Technology Follow this and additional works at: http://scholarworks.rit.edu/article Recommended Citation Carrano AL, Taylor JB. Geometric modeling of engineered abrasive processes. J Manuf Process 2005;7(1):17–27. https://doi.org/ 10.1016/S1526-6125(05)70078-5 This Article is brought to you for free and open access by RIT Scholar Works. It has been accepted for inclusion in Articles by an authorized administrator of RIT Scholar Works. For more information, please contact [email protected]. *Geometric Modeling of Engineered Abrasive Processes* Carrano, Andres L Abstract One of the common issues that arises in abrasive machining is the inconsistency of the surface roughness within the same batch and under identical machining conditions. Recent advances in engineered abrasives have allowed replacement of the random arrangement of minerals on conventional belts with precisely shaped structures uniformly cast directly onto a backing material. This allows for abrasive belts that are more deterministic in shape, size, distribution, orientation, and composition. A computer model based on known tooling geometry was developed to approximate the asymptotic surface profile that was achievable under specific loading conditions. Outputs included the theoretical surface parameters, R^sub q^, R^sub a^, R^sub v^, R^sub p^, R^sub t^, and R^sub sk^. Experimental validation was performed with a custom-made abrader apparatus and using engineered abrasives on highly polished aluminum samples. Interferometric microscopy was used in assessing the surface roughness. -
A Gentle Introduction to Abrasive (Waterjet) Machining Brought to You by the MIT Fablab Staff
A Gentle Introduction to Abrasive (Waterjet) Machining Brought to you by the MIT FabLab Staff. In this brief two part tutorial we will give you a jump start toward making your first project parts utilizing the Department of Architecture’s new OMAX waterjet machine. In Part I we assume that you have access to a computer running the OMAX Layout software required to define new geometry or import your previously defined part geometry and then create tool paths based on this geometry. In Part II we assume that you have access to the actual waterjet machine itself, the OMAX Make software which controls the physical machine, as well as knowledgeable lab monitor or staff member who’ll be able to help with any questions or safety issues that might arise. First, a little background information about abrasive machining: The OMAX 2652 is a relatively new type of machine tool which uses a very high pressure (> 50k psi) stream of water and garnet abrasive to cut virtually any kind of material by eroding the material along an arbitrarily complex tool path that you define, leaving a thin (~0.025”), kerf. Both thin and thick materials such as aluminum, steel and stainless steel, plastics such Plexiglas and Lexan, rubber, brick and glass, and even wood may be cut on a waterjet. Material thickness can range from 1/16” through 4”, even when cutting very hard materials. Some special precautions and procedures are required for cutting brittle or very thin materials. The procedures and techniques required to use the OMAX waterjet are pretty straightforward and quick to learn. -
Material Removal Modeling and Life Expectancy of Electroplated CBN Grinding Wheel and Paired Polishing Tianyu Yu Iowa State University
Iowa State University Capstones, Theses and Graduate Theses and Dissertations Dissertations 2016 Material removal modeling and life expectancy of electroplated CBN grinding wheel and paired polishing Tianyu Yu Iowa State University Follow this and additional works at: https://lib.dr.iastate.edu/etd Part of the Engineering Mechanics Commons, and the Mechanical Engineering Commons Recommended Citation Yu, Tianyu, "Material removal modeling and life expectancy of electroplated CBN grinding wheel and paired polishing" (2016). Graduate Theses and Dissertations. 16045. https://lib.dr.iastate.edu/etd/16045 This Dissertation is brought to you for free and open access by the Iowa State University Capstones, Theses and Dissertations at Iowa State University Digital Repository. It has been accepted for inclusion in Graduate Theses and Dissertations by an authorized administrator of Iowa State University Digital Repository. For more information, please contact [email protected]. Material removal modeling and life expectancy of electroplated CBN grinding wheel and paired polishing by Tianyu Yu A dissertation submitted to the graduate faculty in partial fulfillment of the requirements for the degree of DOCTOR OF PHILOSOPHY Major: Engineering Mechanics-Aerospace Engineering Program of Study Committee: Ashraf F. Bastawros, Major Professor Abhijit Chandra Wei Hong Thomas Rudolphi Stephen Holland Iowa State University Ames, Iowa 2016 Copyright © Tianyu Yu, 2016. All rights reserved. ii DEDICATION I would like to dedicate this dissertation to my parents -
11-21-17 LETTING: 12-13-17 Page 1 of 5 KANSAS DEPARTMENT OF
11-21-17 LETTING: 12-13-17 Page 1 of 5 KANSAS DEPARTMENT OF TRANSPORTATION 517122151 U056-046 KA 4670-01 NHPP-A467(001) ___________________________________________________________________________ CONTRACT PROPOSAL 1. The Secretary of Transportation of the State of Kansas [Secretary] will accept only electronic internet proposals from prequalified contractors for construction, improvement, reconstruction, or maintenance work in the State of Kansas, said work known as Project No.: U056-046 KA 4670-01 NHPP-A467(001) The general scope, location and net length are: MILLING AND HMA OVERLAY. US-56 FR APPRX 900 FT E US56/US69 JCT TO APPROX 1350 FT E OF ROE AVE IN JO CO. LENGTH IS 1.825 MI. 2. This is the Proposal of [Contractor] to complete the Project for the amount set out in the accompanying Unit Prices List. 3. The Contractor makes the following ties and riders as part of its Proposal in addition to state ties, if any: ___________________________________________________________________________ ___________________________________________________________________________ ___________________________________________________________________________ ___________________________________________________________________________ 4. Contractors and other interested entities may examine the Bidding Proposal Form/Contract Documents (see paragraph 11 below) at the County Clerk's Office in the County in which the Project is located and at the Kansas Department of Transportation [KDOT] Bureau of Construction and Materials, Eisenhower State Office Building, 700 SW Harrison, Topeka, Kansas 66603. Contractors may examine and print the Bidding Proposal Form/ Contract Documents by using KDOT's website at http://www.ksdot.org and choosing the following selections: "Doing Business","Bidding & Letting" and "Proposal Information", and using the links provided in the Project information for this project. KDOT will not print and mail paper copies of Proposal Forms.