1) The document discusses automatic edge polishing machines and compares using silicon carbide abrasives to using diamond abrasives.
2) It notes that while older machines struggled using silicon carbide, newer machines and replacing abrasives with diamonds results in faster processing, better finishes, and increased production rates.
3) Key advantages of diamonds include removing more material faster, improving throughput, extending disk life, and allowing older machines to be used profitably again.
This document discusses using diamond abrasives for radial arm polishing machines. It summarizes that:
1) Radial arm polishing machines are commonly used to resurface damaged stone, but traditional silicon carbide abrasives work better for softer stones like marble than harder stones like granite.
2) Using diamond abrasives instead can allow radial arm polishers to more effectively polish even hard stones like granite at higher speeds than traditional methods.
3) Increasing the rotational speed of older radial arm machines through different pulley combinations enables diamond abrasives to achieve the peripheral speeds needed for optimal polishing performance.
1. A joint development program between Abrasive Technology, Inc. and GE Superabrasives was conducted to test the use of diamond tools for polishing granite and marble.
2. Extensive testing was performed using a customized slab polishing machine across a range of stone types, tool formulations, and operating parameters.
3. The testing found that diamond tools could produce outstanding finishes in less time than conventional abrasives and optimized operating parameters were identified.
The document discusses a study conducted by Abrasive Technology, Inc. to analyze techniques for polishing granite and marble edges using diamond tools. The study collected data from stone fabrication shops on the forces applied and times taken during edge polishing using various tools, stones, and techniques. The results showed large variations in techniques, operating parameters, and finish quality between operators. The document provides recommendations for optimizing the polishing process to improve finish and productivity.
The document provides guidance on how to plan for an investment in a community. It outlines key considerations for understanding the target market and existing business community, assessing infrastructure needs, and developing a strategic plan with community support. The guidance emphasizes transparent planning, stakeholder engagement, and setting realistic timelines and goals.
This PPT is all about Microsoft Surface line devices such as Surface,Surface Pro, Surface Book, Surface laptop, Surface Hub, Surface studio, Surface Neo, Surface Duo
The document discusses the results of a study on the effects of a new drug on patients with a certain medical condition. The study found that patients who received the drug experienced a statistically significant improvement in their symptoms compared to those who received a placebo. However, some patients also reported experiencing mild side effects from the drug such as headaches and nausea.
This document does not contain any substantive information to summarize. It consists only of formatting characters without any words, sentences, or meaningful content.
Presented by Julia M. Wei of the Law Offices of Peter N. Brewer, this webinar about partition actions and co-ownership issues in California. The webinar covers essential information about partition actions that REALTORS®, homeowners, investors, and lenders should know about co-ownership disputes, including:
1) What is Property Co-Ownership in California
2) Partition Basics
3) Who, What, Where, When, Why of Partition Actions
4) Situations Typically Giving Rise to Partition Actions
5) Reasons for a Partition Action in California
6) Mechanics of Completing a Partition Action
7) Using a Referee for a California Partition Action
8) Accounting, Attorney Fees, & Additional Considerations
2)
This document discusses using diamond abrasives for radial arm polishing machines. It summarizes that:
1) Radial arm polishing machines are commonly used to resurface damaged stone, but traditional silicon carbide abrasives work better for softer stones like marble than harder stones like granite.
2) Using diamond abrasives instead can allow radial arm polishers to more effectively polish even hard stones like granite at higher speeds than traditional methods.
3) Increasing the rotational speed of older radial arm machines through different pulley combinations enables diamond abrasives to achieve the peripheral speeds needed for optimal polishing performance.
1. A joint development program between Abrasive Technology, Inc. and GE Superabrasives was conducted to test the use of diamond tools for polishing granite and marble.
2. Extensive testing was performed using a customized slab polishing machine across a range of stone types, tool formulations, and operating parameters.
3. The testing found that diamond tools could produce outstanding finishes in less time than conventional abrasives and optimized operating parameters were identified.
The document discusses a study conducted by Abrasive Technology, Inc. to analyze techniques for polishing granite and marble edges using diamond tools. The study collected data from stone fabrication shops on the forces applied and times taken during edge polishing using various tools, stones, and techniques. The results showed large variations in techniques, operating parameters, and finish quality between operators. The document provides recommendations for optimizing the polishing process to improve finish and productivity.
The document provides guidance on how to plan for an investment in a community. It outlines key considerations for understanding the target market and existing business community, assessing infrastructure needs, and developing a strategic plan with community support. The guidance emphasizes transparent planning, stakeholder engagement, and setting realistic timelines and goals.
This PPT is all about Microsoft Surface line devices such as Surface,Surface Pro, Surface Book, Surface laptop, Surface Hub, Surface studio, Surface Neo, Surface Duo
The document discusses the results of a study on the effects of a new drug on patients with a certain medical condition. The study found that patients who received the drug experienced a statistically significant improvement in their symptoms compared to those who received a placebo. However, some patients also reported experiencing mild side effects from the drug such as headaches and nausea.
This document does not contain any substantive information to summarize. It consists only of formatting characters without any words, sentences, or meaningful content.
Presented by Julia M. Wei of the Law Offices of Peter N. Brewer, this webinar about partition actions and co-ownership issues in California. The webinar covers essential information about partition actions that REALTORS®, homeowners, investors, and lenders should know about co-ownership disputes, including:
1) What is Property Co-Ownership in California
2) Partition Basics
3) Who, What, Where, When, Why of Partition Actions
4) Situations Typically Giving Rise to Partition Actions
5) Reasons for a Partition Action in California
6) Mechanics of Completing a Partition Action
7) Using a Referee for a California Partition Action
8) Accounting, Attorney Fees, & Additional Considerations
2)
The document discusses the benefits of exercise for both physical and mental health. Regular exercise can improve cardiovascular health, reduce symptoms of depression and anxiety, enhance mood, and reduce stress levels. Staying physically active for at least 30 minutes each day is recommended for overall health and well-being.
Modern Selling Workshop: The Way to SellDania Riad
Selling as a profession is evolving, and we need to bring more science to the art of selling. LinkedIn has teamed up with The Miller Heiman Group to combine their 150 years of selling expertise with our ground breaking sales technology to create The Way To Sell.
Join us to hear firsthand from Charity Freebairn, LinkedIn's Senior Relationship Manager and our special guest Richard Hilton, Managing Director for EMEA, at Miller Heiman Group on how to build scalable and proven sales methodology, which together can build a powerful modern selling tool.
You'll learn these 4 crucial steps to sales success:
Who: Identify the critical buyer profiles
Why: Find a valid business reason to engage
When: Engage your buyer at the right time
How: Contact your buyer thoughtfully
The Semantic Web and its Impact on International WebsitesMartin Hepp
In this presentation, given at the International Search Summit 2010 in Londin, I discuss how rich data embedded inside Web pages via RDFa can be used to make the individual value proposition remain intact across the web - thus preventing consumers and price comparison engines from flattening your individual offer to the price alone.
The document discusses the benefits of exercise for both physical and mental health. Regular exercise can improve cardiovascular health, reduce stress and anxiety, enhance mood, and may even help prevent chronic diseases. Staying physically active is an important part of an overall healthy lifestyle.
The document discusses a new product launch for a company but does not provide any details about the product, launch date, or company. It includes generic placeholder text and formatting characters that do not convey any meaningful information. The summary cannot extract any essential high-level information from the document as it contains no substantive content.
Martin College has been helping people launch and revitalise their careers for 35 years, but what is life at Martin College really like? Here’s a bit about what you can expect from Martin College…
The document discusses a new product launch for a company. It outlines key details about the product, including its features and target customers. It also provides a high-level timeline for rolling out marketing and shipping the product.
Forest fertilisation with biomass ash in Finland – a report about 20 years e...Heikki Suvanto
Biomass Ash 2018 seminar concentrated on the various examples to use biomass ash especially for fertilisation and liming in the Nordic countries. But also regulatory developments as e.g. from the Strubias project for revision of the fertiliser act
were presented.
The following workshop aims in information of existing and ongoing works from research to regulatory aspects and will highlight results of field tests and regular use. It is for bridging gaps of knowledge for beneficial biomass ash utilisation in the different European member states.
The best tips and tricks to overcome the dreaded 3pm slump!
Check out what causes your mid-afternoon drag in the first place and how to avoid it!
These ideas will leave you feeling refreshed, motivated and ready to get on with it!
Try them out for yourself.
SysAid November 2013 Webinar: 4 Best Practices to Reduce Email and Phone Call...SysAid Technologies
How do IT admins and service desk professionals reduce the amount of reported incidents and ensure all incidents/tickets are submitted via the End-User Portal?
The document discusses the benefits of exercise for both physical and mental health. Regular exercise can improve cardiovascular health, reduce stress and anxiety, and boost mood and cognitive function. Staying physically active for at least 30 minutes each day is recommended for overall health and well-being.
The document discusses a new technology that has been developed to help address climate change. It works by capturing carbon dioxide from the air and storing it underground in a way that is cost effective and safe. This new method could potentially capture millions of tons of carbon dioxide each year and help reduce the amount of the gas in the atmosphere.
The document discusses the benefits of exercise for both physical and mental health. Regular exercise can improve cardiovascular health, reduce stress and anxiety, boost mood, and may help prevent conditions like Alzheimer's disease or dementia. Overall, being physically active provides significant health advantages.
An introduction to Foursquare by Gonzalo Cazorla, Marisa Marcos, Mireia Olivan, Jordi Xifra, from the 5th edition of Brand Community Management BES La Salle Postgraduate Course.
TT International Limited is a Singapore-based company incorporated in 1984 that trades electrical and electronic products internationally and has integrated logistics capabilities with a global presence. It is listed on the SGX Main Board and has three business segments: international trading of branded consumer electronics, marketing its in-house AKIRA brand, and complementary logistics support. It has a track record of over 30 years in the industry and its AKIRA brand has won several awards for being one of Singapore's most valuable and strongest brands.
1. The document discusses the history and evolution of print media and online journalism.
2. It describes how printed products like newspapers and magazines were created regularly and distributed in multiple copies, and how the invention of the rotary press helped increase production.
3. The summary then explains the rise of online journalism, with news content now being produced and distributed via the Internet, often by journalists working for mainstream media organizations.
Hikvision Digital Technology Co., Ltd. is one of the world's leading suppliers of video surveillance products and solutions. It was established in 2001 in China and has grown to employ over 6,000 people, including 2,000 R&D engineers. Hikvision offers a wide range of video surveillance equipment such as hybrid DVRs, NVRs, IP cameras, and has a global operation with offices in several regions. It has been recognized as the number one DVR supplier and is now publicly listed on the Shenzhen Stock Exchange with a market capitalization of $5.6 billion.
The document discusses the benefits of exercise for both physical and mental health. Regular exercise can improve cardiovascular health, reduce symptoms of depression and anxiety, enhance mood, and reduce stress levels. Staying physically active for at least 30 minutes each day is recommended for overall health and well-being.
Modern Selling Workshop: The Way to SellDania Riad
Selling as a profession is evolving, and we need to bring more science to the art of selling. LinkedIn has teamed up with The Miller Heiman Group to combine their 150 years of selling expertise with our ground breaking sales technology to create The Way To Sell.
Join us to hear firsthand from Charity Freebairn, LinkedIn's Senior Relationship Manager and our special guest Richard Hilton, Managing Director for EMEA, at Miller Heiman Group on how to build scalable and proven sales methodology, which together can build a powerful modern selling tool.
You'll learn these 4 crucial steps to sales success:
Who: Identify the critical buyer profiles
Why: Find a valid business reason to engage
When: Engage your buyer at the right time
How: Contact your buyer thoughtfully
The Semantic Web and its Impact on International WebsitesMartin Hepp
In this presentation, given at the International Search Summit 2010 in Londin, I discuss how rich data embedded inside Web pages via RDFa can be used to make the individual value proposition remain intact across the web - thus preventing consumers and price comparison engines from flattening your individual offer to the price alone.
The document discusses the benefits of exercise for both physical and mental health. Regular exercise can improve cardiovascular health, reduce stress and anxiety, enhance mood, and may even help prevent chronic diseases. Staying physically active is an important part of an overall healthy lifestyle.
The document discusses a new product launch for a company but does not provide any details about the product, launch date, or company. It includes generic placeholder text and formatting characters that do not convey any meaningful information. The summary cannot extract any essential high-level information from the document as it contains no substantive content.
Martin College has been helping people launch and revitalise their careers for 35 years, but what is life at Martin College really like? Here’s a bit about what you can expect from Martin College…
The document discusses a new product launch for a company. It outlines key details about the product, including its features and target customers. It also provides a high-level timeline for rolling out marketing and shipping the product.
Forest fertilisation with biomass ash in Finland – a report about 20 years e...Heikki Suvanto
Biomass Ash 2018 seminar concentrated on the various examples to use biomass ash especially for fertilisation and liming in the Nordic countries. But also regulatory developments as e.g. from the Strubias project for revision of the fertiliser act
were presented.
The following workshop aims in information of existing and ongoing works from research to regulatory aspects and will highlight results of field tests and regular use. It is for bridging gaps of knowledge for beneficial biomass ash utilisation in the different European member states.
The best tips and tricks to overcome the dreaded 3pm slump!
Check out what causes your mid-afternoon drag in the first place and how to avoid it!
These ideas will leave you feeling refreshed, motivated and ready to get on with it!
Try them out for yourself.
SysAid November 2013 Webinar: 4 Best Practices to Reduce Email and Phone Call...SysAid Technologies
How do IT admins and service desk professionals reduce the amount of reported incidents and ensure all incidents/tickets are submitted via the End-User Portal?
The document discusses the benefits of exercise for both physical and mental health. Regular exercise can improve cardiovascular health, reduce stress and anxiety, and boost mood and cognitive function. Staying physically active for at least 30 minutes each day is recommended for overall health and well-being.
The document discusses a new technology that has been developed to help address climate change. It works by capturing carbon dioxide from the air and storing it underground in a way that is cost effective and safe. This new method could potentially capture millions of tons of carbon dioxide each year and help reduce the amount of the gas in the atmosphere.
The document discusses the benefits of exercise for both physical and mental health. Regular exercise can improve cardiovascular health, reduce stress and anxiety, boost mood, and may help prevent conditions like Alzheimer's disease or dementia. Overall, being physically active provides significant health advantages.
An introduction to Foursquare by Gonzalo Cazorla, Marisa Marcos, Mireia Olivan, Jordi Xifra, from the 5th edition of Brand Community Management BES La Salle Postgraduate Course.
TT International Limited is a Singapore-based company incorporated in 1984 that trades electrical and electronic products internationally and has integrated logistics capabilities with a global presence. It is listed on the SGX Main Board and has three business segments: international trading of branded consumer electronics, marketing its in-house AKIRA brand, and complementary logistics support. It has a track record of over 30 years in the industry and its AKIRA brand has won several awards for being one of Singapore's most valuable and strongest brands.
1. The document discusses the history and evolution of print media and online journalism.
2. It describes how printed products like newspapers and magazines were created regularly and distributed in multiple copies, and how the invention of the rotary press helped increase production.
3. The summary then explains the rise of online journalism, with news content now being produced and distributed via the Internet, often by journalists working for mainstream media organizations.
Hikvision Digital Technology Co., Ltd. is one of the world's leading suppliers of video surveillance products and solutions. It was established in 2001 in China and has grown to employ over 6,000 people, including 2,000 R&D engineers. Hikvision offers a wide range of video surveillance equipment such as hybrid DVRs, NVRs, IP cameras, and has a global operation with offices in several regions. It has been recognized as the number one DVR supplier and is now publicly listed on the Shenzhen Stock Exchange with a market capitalization of $5.6 billion.
This document provides an overview of key USDA agencies and their acronyms. Some of the main agencies covered include the Farm Service Agency (FSA), Foreign Agricultural Service (FAS), Risk Management Agency (RMA), Food and Nutrition Service (FNS), Food Safety and Inspection Service (FSIS), Agricultural Marketing Service (AMS), Animal and Plant Health Inspection Service (APHIS), Grain Inspection, Packers and Stockyards Administration (GIPSA), Forest Service (FS), and Natural Resources Conservation Service (NRCS). Various career fields that relate to each agency such as management, accounting, and economics are also listed.
The document repeatedly discusses "Redux of the Equaliser" over the course of 10 pages. While bullet points are included, no further details or information is provided about the topic being discussed.
Nelson bostock friends 15th anniversary campaignLibanNooh
Nelson Bostock Communications is a top 20 UK consumer PR agency that specializes in contagious ideas and focuses on the consumer perspective rather than channels. They have worked with Warner Home Video since 2005 on film and TV DVD releases and Blu-ray campaigns. Nelson Bostock prides itself on its client relationships and believes success comes from talented people and channel-neutral campaigns.
Presentació de "SGIModa". Sessió "Coneix les solucions gironines en noves tec...3D Girona Tic Media
The document outlines the history of the development of the Enterprise Resource Planning (ERP) system at a large company from the 1990s to 2010s. It discusses the company's implementation of SAP modules over multiple phases to digitize business processes and integrate operations. The ERP system aimed to provide visibility across the entire organization and synchronize business functions while allowing for future growth and product innovation.
The document contains a series of dots, lines, and symbols with no discernible meaning. It switches between English letters and numbers with no context. There are no identifiable topics, concepts, or essential information that can be summarized in 3 sentences or less.
The document discusses Prader-Willi syndrome, a genetic disorder that causes low muscle tone, incomplete sexual development, and an insatiable appetite that can lead to obesity. It notes the key physical and behavioral characteristics of the syndrome and recommends treatment approaches including parent education groups, dietary management, physical therapy, and occupational therapy. The document also provides contact information for two specialists in the treatment of Prader-Willi syndrome.
- The document discusses metrics and reporting for a global project.
- Key areas covered include developing a project dashboard to monitor status using a "traffic light" system, communication protocols between regional and country teams, and presenting the dashboard to steering committees.
- Issues being tracked include plan execution, resolutions/decisions, communication, and operational status. The dashboard is meant to enable prediction of outcomes and better decision-making.
1. The document provides details about a communication boot camp including the schedule and roles.
2. It summarizes two Toastmaster speeches including the speaker, manual level, project number, theme, and objectives.
3. The document ends with writing mantras and tips for speech organization in 6 parts.
The document contains a single website address, www.ViveOaxaca.org, repeated over 50 times. It provides no other information besides this repeated website address.
Baldor Electric Company offers electric motors, drives, generators, and other power transmission products for applications in the paper and forest products industry. Their products are engineered to provide greater uptime and reliability in demanding industrial environments. Baldor's extensive stock and custom product lines include solutions for pulp, paper, OSB, plywood, MDF, and sawmill processes.
The document discusses the Electoral College system in the United States. It explains that voters cast ballots for electors who are pledged to support a particular presidential ticket. It also notes that most states have a winner-take-all system where the candidate who receives the most votes in that state wins all of its electors. The document briefly touches on arguments for and against the Electoral College system and alternatives that have been proposed.
IFEA Webinar: The Best 25 New Ideas in Online MarketingSaffire
This document is a series of repetitions of the word "saffireevents" with no other discernible text or context. It is not possible to summarize the essential information as there is no substantive information provided.
The document contains random letters and numbers with no discernible meaning or message. It appears to be gibberish with no essential information to summarize.
CompTIA and Burning Glass - Opportunities in Chicago’s IT Landscape gives detailed statistics on employment opportunities, direct employers in local areas that are hiring, and knowledge of local in-demand positions.
Similar to Tech view automatic edge polishing (20)
2. Polishing with diamonds: Automatic edge polishing
Almost all stone fabrication shops in the USA have table saws for edge polishing machines must be large, complex, and expensive
dimensional cuts, and most have a radial arm polishing ma- in order to do the work. Costs in the range $100,000 are common
chine. This equipment, along with right-angle grinders and some for purchase, transportation, installation, and acceptance trials.
workbenches, enables the shop to process most jobs. Abrasives
A typical scenario The manufacturers of edge polishing machines have tradition-
Up until recently, a large job was seen as the opportunity and the ally recommended the use of silicon carbide abrasives, and this
means to invest in an automatic edge polishing machine. This, it is still true. If the newer models perform better than the older
was reasoned, would allow the shop to execute the contract ones, it’s because they are more sophisticated. The working
quicker and easier than with manual equipment. Just as impor- parts are better designed. The frames are sturdier. And there are
tant, the new edge polisher could be amortized on a single more polishing stations—up from four or six to at least seven
contract. and sometimes as many as twelve.
The reality often turned out to be quite different. Almost as soon It is possible to polish granite in four steps with silicon carbide
as the edging machine was selected and installed, both the abrasives, but only by hand. Working manually, a craftsman can
operator and the owner realized that there was more to polish- stay on the piece with a particular grit size as long as needed
ing edges than the salesman and the sales literature covered. until the surface of the stone is ready for the next step. He can
also adjust the pressure on the work.
Endless adjusting and fiddling would be required to make the
With an in-line edging machine, however, the work is continu-
unit perform. Despite all the care and attention, the finish might
ously in motion. The amount of time available at each station is
vary considerably from day to day and even from piece to piece.
adjustable to some degree, but quite limited compared with
After endless trials and tribulations and considerable downtime manual operations. The pressure exerted by the polishing heads
the job would be expedited by putting on more craftsmen with can be adjusted, but only by shutting down the machine. A four-
hand-held equipment. The edge polisher would begin to gather or six-head machine, then, is severely limited in terms of grind-
dust. After several months, it would be moved out of the way to ing times and pressures.
a remote corner of the shop and simply abandoned. The whole True, the work can be passed through a second or third time
experience, with all its wasted time and effort, would be chalked using different sequences of grits, but the chance to increase
up to experience. production, the reason for buying the machine in the first place,
The new scenario is lost. Even more time is lost resetting the machine for each of
the many varieties of stone that go through a shop in a given day.
Shops still purchase automatic edge grinders as part of large
It’s no wonder that older machines are often considered incom-
contracts, but the level of awareness of the problems and
patible with modern shop requirements.
requirements for its use has increased considerably. The word
has finally gotten around that the purchase of an inadequate The newer machines are quite different. Some are computer-
piece of machinery is simply a waste of time. Today’s buyers not ized, and resetting for a different stone is as simple as calling up
only want assurances of performance, they also understand that the right program. All have additional polishing stations. An
ABRASIVE TECHNOLOGY, INC. 8400 Green Meadows Dr. Westerville, OH 43081 USA (614) 548-4100 Fax: (614) 548-7617 1-800-964-TECH (8324)
2
3. eight-head machine, for example, can perform twice the work of finish and extends the life of the
a four-head machine at a given belt speed and can be fitted with diamond disks. Typically, pressures
twice the number of grits. With silicon carbide abrasives, the of 0.5 bar-1.5 bars are most com-
new machines work much better than the old ones. They work monly used for straight edge pol-
even better with diamond abrasives. ishing.
Today
The aggressive character of dia-
Diamond disks made specifically for edge polishing machine are mond disks also allows the work to
readily available. They have the proper attachment mechanism, be moved through the machine at a
and they can be used to replace silicon carbide disks on a one- faster rate. Increases in speed of 25% for granite all the way up
for-one basis. to 100% for softer stones are normal and common, depending on
The advantage of diamond disks lies in the fact that the dia- the finish desired. Linear speeds of 3-9 feet per minute for 3/4"
monds are much more aggressive and hence grind faster and material are typical.
more consistently. Because the time available at each of the
polishing heads is limited, diamonds can do far more work than Diamond disks also allow thicker-than-normal pieces to be edge
silicon carbide. polished to the same surface quality as thinner pieces.
Any machine that operates successfully with silicon carbide Water
abrasives, will operate faster with the use of diamonds. More- The right amount of water in the right place is important. The
over, diamonds will produce a better finish than silicon carbide grinding occurs inside the machine, away from the operator’s
can, especially on granite surfaces. sight. Most operators believe that if there is ample flow of water,
An older machine gathering dust in a corner can often be made to the point of deluge, an adequate amount is brought to the
productive by equipping it with diamond disks. work surface. This may not be the case. Care must be exercised
to ensure that the water is directed to the right place and that the
Disk use
diamond disks themselves have sufficient water on their work-
Diamond disks are available today in a variety of sizes, grits, and ing surface.
construction.
Popular sizes for the fabrication shop are 5" and 6" diameter. The water must be uniformly dispersed onto the surface of the
Some special uses require 4" disks, but they are rare. Grit sizes disk as well as on the stone. Lack of water will translate into rapid
commonly range from the coarsest #30 to very fine #8500. deterioration of the diamond disks, and burn marks on the disk
Typically, grits of #50, #120, #220, #400, #800, #1800, and #3500 surface will be noticeable. Periodical examination is the best
are most commonly used for processing marble as well as way to make sure there’s enough water and that it’s being
granite surfaces. directed to the right places.
All diamond polishing disks are resin-bonded. All disks are Bullnose capability
furnished with a snail-lock of attachment, making them quite The very sophisticated newer machines that use computers,
rigid. This rigidity produces a polished surface that is straight positioning sensors, servo motors, and oscillating frames per-
and true. mit the processing of arced edges, i.e., bullnose, as well as
Many owners of in-line polishing machines have successfully traditional straight edge polishing operation. The diamond disks
experimented with a disk consisting of a steel plate having metal- required for bullnose work differ from standard polishing disks
bonded diamond segments welded or brazed to its working used for straight edges.
surface (see drawing). The segments are very similar to those on
In terms of surface area, the amount of contact between the disk
the circumference of diamond saw blades.
and the stone is quite different. Straight line polishing offers
When used in the first polishing station on the machine, this good support for the disk and by the full edge of the stone. By
cutting head can remove large quantities of material, including contrast, bullnose polishing results in a straight line contact,
saw marks. It also does a good job of truing the edge straight and thereby increasing dramatically the pressure on the disk face.
at a right angle to the top surface. Resin-bonded diamond disks
are not suited for such heavy work because they aren’t as Experiments are underway to adapt traditional disks with a
aggressive. cushioning feature to bullnose work. This would allow the
diamond disks to better follow the surface contour. Neverthe-
Machine adjustments less, it seems more likely that the tool that will ultimately prove
Pressure settings on the machine should be reduced when best suited for this operation will be rigid and equipped to
operating with diamond disks. Because the diamonds are more withstand the tremendous operating pressures. In either case,
aggressive than silicon carbide abrasives and do not require water is most critical to this operation, and attention to this
high pressures. The lower pressure ensures a more uniform detail is imperative.
ABRASIVE TECHNOLOGY, INC. 8400 Green Meadows Dr. Westerville, OH 43081 USA (614) 548-4100 Fax: (614) 548-7617 1-800-964-TECH (8324)
3
4. Single-head machines advantages, however, clearly favor diamonds—less grinding
Single-head machines offer another alternative for edge polish- time, improved production rates, better finished surfaces, longer
ing. They have many of the same operating parameters as the disk life—and add up to improved profitability.
multi-head models with the added advantage of allowing the For automatic polishing, the advantages of diamonds include:
operator to observe the work being processed. In addition, they
offer the flexibility to set up a variety of shapes, such as round • Raising the throughput and quality of any machine
pieces like table tops. They are also attractively priced. Their simply by replacing silicon carbide with diamond disks.
disadvantage lies in the fact that the grits must be changed after • The option of using the first station for heavy material
each polishing step. Diamond disks are adaptable to single-head removal.
machines to the same extent as multi-head machines.
• The ability to successfully polish very hard stones.
Costs • The prospect of returning older, less capable machines
On the basis of materials only, diamond polishing tools are to profitable production.
significantly more expensive than silicon carbide. The overall
ABRASIVE TECHNOLOGY, INC. 8400 Green Meadows Dr. Westerville, OH 43081 USA (614) 548-4100 Fax: (614) 548-7617 1-800-964-TECH (8324)
4