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For other uses, see CAM.Animation showing rotating cams and cam followers producing reciprocating motion.The cam can be a simple tooth, as is used to deliver pulses of power to a steam hammer, for example, or an eccentric disc or other shape that produces a smooth reciprocating (back and forth) motion in the follower which is a lever making contact with the cam.The cam can be seen as a device that translates movement from circular to reciprocating (or sometimes oscillating).The opposite operation, translation of reciprocating motion to circular motion, is done by a crank.The information stored and transmitted by the cam is the answer to the question, "What actions should happen, and when?"Certain cams can be characterized by their displacement diagrams, which reflect the changing position a roller follower would make as the cam rotates about an axis.Several key terms are relevant in such a construction of plate cams: base circle, prime circle (with radius equal to the sum of the follower radius and the base circle radius), and the pitch curve which is the radial curve traced out by applying the radial displacements away from the prime circle across all angles.This article does not cite any references or sources.External Links
How round is your circle?This page was last modified on 4 May 2008, at 16:37.CAM was first used in 1971 for car body design and tooling.Early Use of CAM
1.Overview
Traditionally, CAM has been considered as an NC programming tool wherein 3D models of components generated in CAD software are used to generate CNC code to drive numerical controlled machine tools.CAM does not eliminate the need for skilled professionals such as Manufacturing Engineers and NC Programmers.CAM, in fact, both leverages the value of the most skilled manufacturing professionals through advanced productivity tools, while building the skills of new professionals through visualization, simulation and optimization tools.Early Use of CAM
The first commercial applications of CAM were in large companies in the automotive and aerospace industries for example UNISURF in 1971 at Renault (Bezier) for car body design and tooling.Historical Shortcomings
Historically, CAM software was seen to have several shortcomings that necessitated an overly high level of involvement by skilled CNC machinists.In some cases, such as improperly set up CAM software or specific tools, the CNC machine required manual editing before the program will run properly.CAM packages could not, and still cannot, reason as a machinist can.Users would select the type of tool, machining process and paths to be used.As CAM software and machines become more complicated, the skills required of a machinist advance to approach that of a computer programmer and engineer rather than eliminating the CNC machinist from the workforce.The manufacturing environment is increasingly complex.The need for CAM and PLM tools by the manufacturing engineer, NC programmer or machinist is similar to the need for computer assistance by the pilot of modern aircraft systems.Today's CAM systems support the full range of machine tools including: turning, 5 axis machining and wire EDM.These solutions are created to meet the full needs of manufacturing personnel including part planning, shop documentation, resource management and data management and exchange.The stages are:
Roughing
This process begins with raw stock, known as billet, and cuts it very roughly to shape of the final model.This process begins with a roughed part that unevenly approximates the model and cuts to within a fixed offset distance from the model.Feed rates are low and spindle speeds are raised to produce an accurate surface.Edgecam, Tebis, TopSolid, CNC (Mastercam), SolidCAM, DP Technology's ESPRIT, OneCNC, and Sescoi between 2.Areas of usage
In mechanical engineering
In machining
In electronic design automation, CAM tools prepare printed circuit board (PCB) and integrated circuit design data for manufacturing.GNU Computer Aided Manufacturing (GCAM)
What is CNC?Are you considering using CAM?What is NCCAM's role in the field of CAM?There are many terms used to describe approaches to health care that are outside the realm of conventional medicineMedicine as practiced by holders of M.This fact sheet explains how the National Center for Complementary and Alternative Medicine (NCCAM), a component of the National Institutes of Health, defines some of the key terms used in the field of complementary and alternative medicine (CAM)A group of diverse medical and health care systems, practices, and products that are not presently considered to be part of conventional medicine.Terms that are underlined in the text are defined at the end of this fact sheet.CAM is a group of diverse medical and health care systems, practices, and products that are not presently considered to be part of conventional medicine.Some health care providers practice both CAM and conventional medicine.The list of what is considered to be CAM changes continually, as those therapies that are proven to be safe and effective become adopted into conventional health care and as new approaches to health care emerge.Are complementary medicine and alternative medicine different from each other?NCCAM groups CAM practices into four domains, recognizing there can be some overlap.In addition, NCCAM studies CAM whole medical systems, which cut across all domains.Whole medical systems are built upon complete systems of theory and practice.Often, these systems have evolved apart from and earlier than the conventional medical approach used in the United States.Naturopathy aims to support the body's ability to heal itself through the use of dietary and lifestyle changes together with CAM therapies such as herbs, massage, and joint manipulation..Western cultures include traditional traditional Chinese medicineA whole medical system that originated in China.AyurvedaA whole medical system that originated in India.It aims to integrate the body, mind, and spirit to prevent and treat disease.Therapies used include herbs, massage, and yoga..CAM are based on manipulationThe application of controlled force to a joint, moving it beyond the normal range of motion in an effort to aid in restoring health.It is combined with physical therapy and instruction in proper posture.Energy therapies involve the use of energy fields.Biofield therapies are intended to affect energy fields that purportedly surround and penetrate the human body.Examples include qi gongA component of traditional Chinese medicine that combines movement, meditation, and controlled breathing.The intent is to improve blood flow and the flow of qi.ReikiA therapy in which practitioners seek to transmit a universal energy to a person, either from a distance or by placing their hands on or near that person.Therapeutic TouchA therapy in which practitioners pass their hands over another person's body with the intent to use their own perceived healing energy to identify energy imbalances and promote health..What is NCCAM's role in the field of CAM?NCCAM is the Federal Government's lead agency for scientific research on CAM.NCCAM's mission is to explore complementary and alternative healing practices in the context of rigorous science, train CAM researchers, and disseminate authoritative information to the public and professionals.China at least 2,000 years ago.Today, acupunctureA family of procedures that originated in traditional Chinese medicine.CAM whole medical systemA complete system of theory and practice that has evolved over time in different cultures and apart from conventional medicine.Ayurveda includes diet and herbal remedies and emphasizes the use of body, mind, and spirit in disease prevention and treatment.It focuses on the relationship between bodily structure (primarily that of the spine) and function, and how that relationship affects the preservation and restoration of health.Chiropractors use manipulative therapy as an integral treatment tool.Food and Drug Administration has special labeling requirements for dietary supplements and treats them as foods, not drugs.DSHEA defines supplements and outlines quality, safety, and efficacy regulations that are different from those for drugs.Dietary ingredients may include vitamins, minerals, herbs or other botanicals, amino acids, and substances such as enzymes, organ tissues, and metabolites.Dietary supplements come in many forms, including extracts, concentrates, tablets, capsules, gel caps, liquids, and powders.Naturopathy aims to support the body's ability to heal itself through the use of dietary and lifestyle changes together with CAM therapies such as herbs, massage, and joint manipulation.Practitioners work with the patient with a goal of supporting this power, through treatments such as nutrition and lifestyle counseling, dietary supplements, medicinal plants, exercise, homeopathyA whole medical system that originated in Europe.Homeopathy seeks to stimulate the body's ability to heal itself by giving very small doses of highly diluted substances that in larger doses would produce illness or symptoms (an approach called "like cures like").There is an underlying belief that all of the body's systems work together, and disturbances in one system may affect function elsewhere in the body.Japanese word representing Universal Life Energy.Reiki is based on the belief that when spiritual energy is channeled through a Reiki practitioner, the patient's spirit is healed, which in turn heals the physical body.It is based on the premise that it is the healing force of the therapist that affects the patient's recovery; healing is promoted when the body's energies are in balance; and, by passing their hands over the patient, healers can identify energy imbalances.Traditional Chinese medicine (TCM) is the current name for an ancient system of health care from China.Qi is proposed to regulate a person's spiritual, emotional, mental, and physical balance and to be influenced by the opposing forces of yin (negative energy) and yang (positive energy).Disease is proposed to result from the flow of qi being disrupted and yin and yangThe concept of two opposing yet complementary forces described in traditional Chinese medicine.Yin represents cold, slow, or passive aspects of the person, while yang represents hot, excited, or active aspects.NCCAM Clearinghouse
The NCCAM Clearinghouse provides information on CAM and NCCAM, including publications and searches of Federal databases of scientific and medical literature.Examples of publications include "Selecting a CAM Practitioner" and "Are You Considering Using CAM?"Center for Food Safety and Applied Nutrition
Web site: cfsan.Information includes "Tips for the Savvy Supplement User: Making Informed Decisions and Evaluating Information" (cfsan.NCCAM has provided this material for your information.It is not intended to substitute for the medical expertise and advice of your primary health care provider.The mention of any product, service, or therapy is not an endorsement by NCCAM.This page last modified October 24, 2007.Your literature search will be automatically limited to the complementary and alternative medicine (CAM) subset of PubMed.NCCAM and the National Library of Medicine (NLM) have partnered to create CAM on PubMed, a subset of NLM's PubMed.PubMed provides access to citations from the MEDLINE database and additional life science journals.Web sites and other related Web resources.This page last modified October 24, 2007."Please wait while the page loads..."Click here to hear the entire Podcast discussion.Association of Community Bankers, sponsors the James W.End of Stories Posted for Homepage!!!!!!!!!!!Thank you for sharing this video!This video has been added to your favorites.Please login to add to your playlists.Please login to add to flag a video.Change the value of a comment by clicking on a thumb.WOW I saw this girl stripping nude on:CAMLICIOUS.Man this girl looks way better on camlicious!WOW I saw this girl stripping nude on:CAMLICIOUS.Man this girl looks way better on camlicious!Win a Chance to be a Co...Welcome to Digital Photography Review
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Wednesday, 7 May 2008
FujiFilm firmware puts F100fd in the pinkFujiFilm has released a firmware update for its F100fd compact camera.GMT)
Friday, 2 May 2008
Just posted!EOS 1D Mark III and 1Ds Mark III cameras.This is the latest in line of the popular 'Digital Rebel series' of compact digital SLRs and features a twelve megapixel CMOS sensor with Live View and dust reduction.SDHC storage, High ISO noise reduction and a range of other features handed down from the EOS 40D.Link to Nikon UK download page and a PDF detailing the new features now included.GMT)
Tuesday, 22 April 2008
Just posted!The successor of the popular TZ3 is the latest addition to Panasonic's family of compact long zoom cameras.LCD and High Definition video capture.GMT)
Ricoh drops resilient G600 into marketRicoh, living up to its reputation for interesting niche digital cameras, has launched the G600 water and dust resistant model.GMT)
Friday, 18 April 2008
Just posted!Find out how it did in our extended testing after the link...Updated: firmware changes to Olympus or Panasonic lenses can only be conducted using the lens manufacturer's cameras.The firmware adds vignetting control for most G and D type lenses, and the ability to specify faster minimum shutter speeds to trigger Auto ISO.As well as these headline changes are a number of obscure feature tweaks and corrections.The new firmware is available immediately from Nikon's website.Update: Update: this firmware update has been pulled temporarily (details after the link).GMT)
Friday, 11 April 2008
Adobe RAWs againAdobe has released Camera Raw 4.GMT)
Thursday, 10 April 2008
Nikon announces Coolpix P80 SuperzoomNikon has today announced a new model in its 'P' (Performance) series of digital cameras.The Coolpix P80 comes with a 10.Click through for the press release and images...W300
Ricoh Caplio R8
More (timeline)...Cameras receiving the most clicks in the last five days.Canon PowerShot S5 IS
1.The most active threads in the last 48 hrs."Ten years ago today I sat down at my trusty Apple PowerMac 7100 (66 Mhz), fired up a text editor and wrote the very first entry of this weblog.Life is a constant challenge.There was no further explanation, no diatribe about the turmoil my life was in at the time, no links to web design and HTML resources elsewhere on the web, no opinion about politics, no product reviews or endorsements.For the past yen years my blog has been one of the constants in my adult life.It has been there through the thick and the thin.Early in my career it was there when I was the first person to ever get fired over a blog.My new job (more about this soon) and my increasingly busy personal life are taking their toll on CamWorld.My wife and I are expecting our first baby soon (due October 1) and everyone with kids keeps telling me I have no idea what I've signed up for.The bottom line is my blog continues to be a large and important part of my life, more so my past than the present.Here's to ten more years of blogging!Funny how as soon as I accept a job offer the number of opportunities explodes.I've turned down or ignored because I've landed at a place I hope to make a big difference in a big way.Manhattan by train or bike which is worth a lot more than most people give it credit for.Note: CamWorld turns 10 years old on June 11.The development team at Confabb has been busy these past few months.Confabb connections and any messages sent to you by those within the Confabb community.You can also see what others are talking about and invite new people, either from within or outside of Confabb, to join your network.This is your personal network; friends, colleagues and other contacts whose whereabouts and doings you want to follow as they prepare for the event.Attendees can view the list of other conference participants, check out their profiles, and invite them into their personal network.Bulletin Boards
Confabb gives all of its community members their own personal blog, or bulletin board with which they can share their thoughts, opinions on the issues and experiences.I'm very pleased to see how Confabb has grown over the past few months.Granted, if we had the resources of someone like Yahoo, Google or Microsoft we'd probably have made a different decision.If you watch any daytime TV or caught Nightline the other night you'll know that April is Autism Awareness Month.Recently there has been a big activism push towards edcuating the public about autism and creating a larger awareness about what autism is and isn't.When I met my wife a few years ago she mentioned to me that she had a nephew who is autistic.If you care about activism and educating the world about autism, please go watch this video now."Congrats to Dave Winer on ten long years of blogging.CamWorld way back in the heady days of 1997.Sometimes I wish we could go back 10 years and..."I've long given him credit for inspiring me to start writing CamWorld way back in the heady days of 1997.Dave and I have had our spats over the years and have often not seen eye to eye.I've always respected his ideas, his leadership and his way of thinking.The second reason is that the CamWorld clan will soon number three.This is somewhat bittersweet since we tried last year and lost the baby at 16 weeks.CamWorld will turn 10 years old on June 11, 1997.Twitter me at username camworld.We're going to drive around Berkeley and its surrounding towns and get some of the local realtors to show us places, but it'd be a good idea to know what's good and what's bad before we go.It's a fun project that I am hoping will turn into a huge success for them since that particular market is underserved as far as robust online communities go.About a month ago I received an email from a TV news producer who wanted to interview me for a segment about online florists who scam people.WMV) is not bad and I realized they used only a few seconds of material from what turned out to be more than two hours of setup, filiming and equipment breakdown.You can't just answer "Yes" or "No" since any soundbites pulled out for editing would then be out of context.You needed to answer something like, "No, I would not use an online florist that is not based in my city."It sounds easy but in practice is pretty hard.It was an interesting experience, though I'm not sure if I would do it again.The year of 2006 was an interesting and challenging one.This year promises new beginnings.I'm working on a CamWorld redesign and want to start blogging more regularly again.You see, CamWorld is about me.CamWorld is a peek into the subconsciousness that makes me tick.Increasingly, they play an important role in teaching the media that every person has a voice and the right to broadcast that voice.If enough of those voices are united, they are a force to be reckoned with.Being in debt for so long really sucks but I see it as my own personal sacrifice for the effort to get rid of a President who is so wrong for this country it's not even funny; no not funny at all, tragic and disturbing really.Stay tuned for the new CamWorld design, which will have some neat new features.Just a quick note to mark this site's 9th birthday.Say tuned for some big announcements in July and September.Images are wrapped in divs classed "flickr_badge_image" with ids
"flickr_badge_imageX" where "X" is an integer specifying ordinal position.Chris Pirillo
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