Grinding Engineering News - Details

Shi, Y., Chen, L., Xin, H. et al. Investigation on the grinding properties of high thermal conductivity vitrified bond CBN grinding wheel for titanium alloy. Int J Adv Manufacturing Technol (2020). https://doi.org/10.1007/s00170-020-05134-y

Published 2 March 2020
In order to analyze the effect of graphite addition on the properties of vitrified bond CBN grinding wheel samples, different amounts of graphite (0, 2, 4, 6 wt%) were added to the vitrified bonder. When the graphite addition is 2 wt%, the refractoriness, fluidity, and bending strength of the grinding wheel samples are better than those of conventional vitrified bond grinding wheel samples.
https://link.springer.com/article/10.1007%2Fs00170-020-05134-y

Paper referred in the above paper
Development of a micro-graphite impregnated grinding wheel
Ming-YiTsai, Shi-XingJian
International Journal of Machine Tools and Manufacture
Volume 56, May 2012, Pages 94-101
https://www.sciencedirect.com/science/article/pii/S0890695512000181


Global and China External Cylindrical Grinding Machines Market 2020 by Manufacturers, Type and Application, Forecast to 2025

The key market players for global External Cylindrical Grinding Machines market:
    Knuth Machine Tools
    Loeser
    Studer
    EMAG
    Pargon Machinery
    DANOBATGROUP
    LIEBHERR
    Assfalg
    Dynabrade Europe
    AZ spa
    Kaindl
    Robbi Group



Market segment by Type:
    PLC-controlled
    CNC-controlled
    Manually-controlled

Market segment by Application,
    Aerospace
    Automotive
    Marine
    Railways
   Oil&Gas
    Energy
https://www.globalinforesearch.com/global-and-China-External-Cylindrical-Grinding-Machines-market_p293235.html


The Influence of the Depth of Cut in Single-Pass
Grinding on the Microstructure and Properties of the
C45 Steel Surface Layer
Marek Szkodo, Karolina Chodnicka-Wszelak, Mariusz Deja , , Alicja Stanisławska
and Michał Bartma ´nski
Materials 2020, 13, 1040; doi:10.3390/ma13051040 www.mdpi.com/journal/materials

Rodriguez, R.L., Lopes, J.C., Garcia, M.V. et al. Grinding process applied to workpieces with different geometries interrupted using CBN wheel. Int J Adv Manuf Technol (2020). https://doi.org/10.1007/s00170-020-05122-2
This study aims to evaluate the performance of the interrupted grinding process of workpieces with a different number of grooves (2, 6, and 12) in CBN grinding and to contribute to further findings about the integrity of interrupted surfaces and groove flanks after grinding, analyzing surface roughness and roundness deviation of workpieces after grinding process. The diametric wheel wear and grinding power were also recorded and analyzed. The performance of the interrupted grinding process was compared with the continuous grinding process, i.e., for workpieces without grooves.
https://link.springer.com/article/10.1007%2Fs00170-020-05122-2

Jan 2020

CBN generating grinding is an economic alternative to grinding with corundum.

In many applications generating grinding with corundum is a good solution. But in some applications it has some disadvantages and CBN grinding wheels are more appropriate alternative.

Grinding worm:

CBN grinding worms can be smaller. With CBN, dressing times can be dispensed with completely and therefore,  cycle times and manufacturing costs can be reduced.  A CBN grinding worm is clamped in and the grinding process begins straightaway—with no need to make corrections beforehand.

Test results of CBN: The unit costs of a test workpiece (m = 1.53 mm, z = 81 mm) included a special width modification with corundum at €4.25 with a cycle time of 114.6 seconds, while the same grinding process with CBN was €3.38 cheaper and considerably faster, with a cycle time of 78 seconds.

The number of producible workpieces per dressing cycle with corundum is in the two-figure range, it can occasionally reach well into the four-figure range with a CBN coating.

At EMO 2019 Liebherr exhibited a generating gear grinding machine that meets the requirements of a clean factory in full: The LGG 180 with integrated centrifuge.

https://www.sme.org/technologies/articles/2020/january/cbn-generating-grinding-an-economic-alternative/

https://www.liebherr.com/shared/media/gear-technology-and-automation/broschures/gear-cutting-machines/liebherr-generating-and-profile-gear-grinding-machines-lcs600-1200.pdf

Grinding and finishing worm
Abstract
The invention relates to an apparatus of unitary construction to fine-finish gear teeth. The apparatus is a worm having first and second end portions and first and second outer surfaces. The first and second surfaces define a common tooth profile. The first end portion is adapted for grinding and the second end portion is adapted for finishing.
https://patents.google.com/patent/US5379554A/en

28 Feb 2019
https://www.nortonabrasives.com/en-us/resources/expertise/why-select-gear-grinding-cbn


Pune, Jan. 17, 2020 (GLOBE NEWSWIRE) -- The global Grinding Machines Market size is expected to reach USD 6.73 billion by 2026. A report published by Fortune Business Insights™ titled, “Grinding Machines Market Size, Share & Industry Analysis, By Product (CNC (Cylindrical Grinding Machine, Surface Grinding Machine, Others (Centerless Grinding Machine, Gear Grinding Machines)), Conventional), By Application (Automotive, General Machinery, Precision Machinery, Transport Machinery, Others).

Highlights of the Report

The rise in the capability of grinding machines that offer stable processing temperatures is a major factor boosting the grinding machines' market growth. This is further attributed to the improved heaters and chillers section that are used significantly in applications such as automotive and aerospace industries.

The rising adoption of Industry 4.0 for data exchange and automation for manufacturing technologies have further propelled manufacturers to add sensors in grinders for maintenance and prediction purposes.

Increasing Demand for Acquiring New Aircrafts to Help Asia Pacific Lead Market

The market is dominated by Asia Pacific on account of the rise in demand from different industries such as tooling applications, automotive, and aerospace. In 2018, Asia Pacific accounted for USD 2.62 billion grinding machinery market share on account of the procurement of new aircraft from developing nations such as India, Vietnam, and Indonesia.

Players to Focus on Improving Speed and Feed Rate of Grinding Equipment

Key Grinding Machines Market manufacturers are emphasizing on introduction of special purpose grinding machines. To cite an example, crankshaft and camshaft grinding machines by JTEKT Toyoda Americas Corporation are specifically designed for high production in the automotive industry. Apart from this, players are also trying to improve the speed and feed rate of the grinding equipment in order to multiply the production rates in the coming years. Furthermore, market vendors are also trying to improvise on the grinder design for reducing the thermal problems and control heat fluctuation in order to enhance the productivity of grinding machines.

Some of the key industry developments in the Grinding Machines Market are:

January 2018 –The world leading producer of CNC grinding machines ANCA launched their TapXmicro grinding solution for single setup grinding micro taps of 3mm. These grinding machines are specially designed for use in the micro tap market.

August 2019 –  360-degree range of STUDER internal cylindrical grinding machines was launched by the United Grinding North America. This machine is applicable for use in high production and radii grinding operations.

List of the key grinding machinery market manufacturers include:

Falcon Machine Tools Co., Ltd
JTEKT Toyoda Americas Corporation
United Grinding North America
DANOBATGROUP
Junker Group
ANCA
Makino
DMG Mori
Mitsubishi Heavy Industries, Ltd
Amada Machine Tools Co., Ltd.
https://www.globenewswire.com/news-release/2020/01/17/1971828/0/en/Grinding-Machines-Market-to-Reach-USD-6-73-Billion-by-2026-Growth-is-Attributable-to-Increasing-Demand-from-Automobile-Sector-and-Metal-Processing-Industries-says-Fortune-Business-.html

More details in
https://www.fortunebusinessinsights.com/industry-reports/grinding-machines-market-101950




Micromachines (Basel). 2020 Jan 21;11(2). pii: E115. doi: 10.3390/mi11020115.
Internal Cylindrical Grinding Process of INCONEL® Alloy 600 Using Grinding Wheels with Sol-Gel Alumina and a Synthetic Organosilicon Polymer-Based Impregnate.
Kapłonek W, Nadolny K, Rokosz K, Marciano J, Mia M, Pimenov DY, Kulik O, Gupta MK.


Abstract
The development of modern jet engines would not be possible without dynamically developed nickel-chromium-based superalloys, such as INCONEL® The effective abrasive machining of above materials brings with it many problems and challenges, such as intensive clogging of the grinding wheel active surface (GWAS).

The authors of this work demonstrate that introduction of a synthetic organosilicon polymer-based impregnating substance to the GWAS can significantly improve the effects of carrying out the abrasive process of hard-to-cut materials. Experimental studies were carried out on a set of a silicon-treated small-sized sol-gel alumina 1-35×10×10-SG/F46G10VTO grinding wheels. The set contained abrasive tools after the internal cylindrical grinding process of INCONEL® alloy 600 rings and reference abrasive tools. The condition of the GWAS after the impregnation process was studied, including imaging and measurements of its microgeometry using confocal laser scanning microscopy (CLSM), microanalysis of its elemental distribution using energy dispersive X-Ray fluorescence (EDXRF), and the influence of impregnation process on the grinding temperature using infrared thermography (IRT). The obtained results confirmed the correctness of introduction of the impregnating substance into the grinding wheel structure, and it was possible to obtain an abrasive tool with a recommended characteristic.
https://www.ncbi.nlm.nih.gov/pubmed/31973056




2018
Germany Crankshaft Forging - Discover Heavyweight Production | Global Technology
1 Dec 2018
https://www.youtube.com/watch?v=0pYe80zfmDM
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Source: Maschinenfabrik ALFING Kessler GmbH: http://bit.ly/2CMIqZG   YouTube Channel
The above company specialises in crankshafts
https://www.alfing-crankshafts.com/

Maschinenfabrik ALFING Kessler GmbH is synonymous with crankshaft manufacturing excellence. In the last 100 years or so we have produced more than 10 million crankshafts. With a production area extending over 114,000 m², we employ the latest manufacturing technology and our outstanding expertise to make crankshafts up to 8 m in length. With a workforce of around 1150, Maschinenfabrik ALFING Kessler is a globally operating medium-sized company which has acquired a prominent position on the world market.
Core Competence in Crankshaft forging and machining
https://www.alfing-crankshafts.com/unternehmen/unternehmenskompetenz-kurbelwellen.html

MARCH 1, 2018 / 8:21 AM / 2 YEARS AGO
BRIEF-Guilin Fuda to set up Guilin-based large crankshaft JV with Maschinenfabrik Alfing Kessler GmbH in China
https://www.reuters.com/article/brief-guilin-fuda-to-set-up-guilin-based/brief-guilin-fuda-to-set-up-guilin-based-large-crankshaft-jv-with-maschinenfabrik-alfing-kessler-gmbh-idUSL4N1QJ1Q8

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