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Topic: Knurling


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  Knurling Encyclopedia Article @ MetalworkArt.com (Metalwork Art) (via CobWeb/3.1 planetlab2.tamu.edu)   (Site not responding. Last check: 2007-10-09)
Knurling may also be used as a repair method: because a rolled-in knurled surface has raised-up areas surrounding the depressed areas, these raised areas can make up for wear on the part.
On the lathe, knurl cutting is usually accomplished using the same automatic-feed mechanisms that are used to cut [1] threads; knurling can be thought of as simply a series of threads cut at extremely coarse pitch and in both the left-hand and right-hand directions.
Rolled knurls are somewhat more complicated to design than cut knurls because the outer diameter of the work piece must be chosen to allow the roller to roll an Categories number of patterns around the workpiece.
www.metalworkart.com.cob-web.org:8888 /encyclopedia/Knurling   (691 words)

  
 Knurling Info   (Site not responding. Last check: 2007-10-09)
Knurls from the turret should be fed onto the work at about.005 to.020 per rev. (slower for harder materials faster for soft materials) and off the work about twice as fast.
For turret knurling, a faster, feed rate may correct a tracking problem, as this would make a larger impression on the first revolution, thus increasing the chance of the teeth falling in place on the second revolution even though the spacing were off slightly.
If the circumference of the part being rolled is not an approximate multiple of the pitch of the knurl, the knurl may land somewhere between the two initial teeth, causing it to start a new row.
www.staffordspecialtools.com /knurling.htm   (332 words)

  
 Knurling - Wikipedia, the free encyclopedia
Knurling is a manufacturing process, typically conducted on a lathe, whereby a visually-attractive diamond-shaped (criss-cross) pattern is cut or rolled into metal.
Occasionally, the knurled pattern is a series of straight ridges or a helix of "straight" ridges rather than the more-usual criss-cross pattern.
Rolled knurls are somewhat more complicated to design than cut knurls because the outer diameter of the work piece must be chosen to allow the roller to roll an integral number of patterns around the workpiece.
en.wikipedia.org /wiki/Knurling   (551 words)

  
 Knurling
Knurling involves creating (by a variety of methods) long, vertical, side-by-side indentations around the O.D. of the inner member in the area to be brazed, so that when a press-fit is used for the two members, vertical capillary paths for the BFM can be ensured.
Knurling was tested on a quick mock-up of this larger valve joint, and its sensitivity to varying gap sizes was examined.
Knurling upset the metal locally, causing the extension-tube O.D. to increase (see Figure 3).However, provided the knurl was deep enough to allow a light pressfit, braze performance was very good over a wide range of fit-ups.
www.wallcolmonoy.com /TechServices/NicrobrazNewsArchives/WCC_Article_Knurling.htm   (1079 words)

  
 Process for making metal fibers - Patent 4104900
knurling the cylindrical surface of said billet to form a series of alternate ridges and depressions, the length and width of said ridges corresponding respectively to the desired length and width of said fibers, and the depth of said depressions being at least as great as the desired thickness of said fibers,
A knurling tool 44 is positioned at the end or edge of the workpiece 40 to form generally radial depressions 46 and ridges 48 on an end surface 50 of the coil 40.
The knurling and shaving tools are advanced axially to the workpiece as its width is decreased by successive fiber shaving operations to assure that the depth of the knurled depressions and the thickness of the shaved fibers remain constant.
www.freepatentsonline.com /4104900.html   (1866 words)

  
 KNURLING ON THE HARBOR FREIGHT MINI LATHE
Sherline lathes have designed a very ingenious knurling tool which when clamped to the cross slide table ("T" slotted like that on the Taig) acts a clamp around the rotating work and absolutely no lateral thrust is applied to the spindle bearings or cross slide nut.
As the points of the knurled are pushed into the work, they cause the metal to be displaced until the complete pattern is formed.
The knurling process is considered finished when the peaks or points of the diamonds straight lines are fully sharp.
www.homestead.com /tool20895/files/KNURLING.htm   (831 words)

  
 Sherline Knurling Tool Instructions
A good knurl is produced by embossing; therefore, a correct starting diameter on the work to be knurled can best be determined by trial and error on a scrap piece of similar material.
The part to be knurled or experimental part should be running true with a chamfered corner at the end of the knurled section.
To complete the knurl the knurls are fed on to the part for the proper distance using plenty of cutting oil.
www.sherline.com /3004inst.htm   (849 words)

  
 Tooling & Production - Sept 2000 - Prescription knurling
Cherry Valley, MA Knurling by the roll forming method is a plastic deformation process characterized by the absence of metal chips.
In many instances, knurling by roll forming need not be pretty but rather functional as in a car wheel bolt or electric motor shaft.
When knurl teeth are made by roll forming, planes of metal are displaced upwards to form the teeth.
www.manufacturingcenter.com /tooling/archives/0900/0900pk.asp   (1003 words)

  
 Method of and apparatus for cover sheet removal from laminated boards - Patent 5358591   (Site not responding. Last check: 2007-10-09)
A second air blowing injector (weaker than the air blowing injectors associated with the knurling unit) is arranged to help, that is, reinforce, the sucking action by pressing the separated portion of the cover sheet against the sucking roll.
The knurling unit 20 is then driven by an actuator, for example, a pneumatic cylinder means (not shown), and caused to travel, as indicated by the arrow 47, from one side of the apparatus 2 to the other, on the horizontal axis 38--38.
The wheels 50 of the knurling unit 20 are pressed against the laminated board 6 by a spring 52.
www.freepatentsonline.com /5358591.html   (6006 words)

  
 Habegger End Knurling Die System
The three knurls forming the teeth assure a high quality of the job and the long life of the die.
The diameter after knurling (measured on the tip of the teeth), and the tolerances "mini" and "maxi" are in accordance.
The sizes of the knurling dies are available in tenths of a millimetre.
www.floydautomatic.co.uk /habegger_endknurl.htm   (335 words)

  
 Cut knurling - Welcome to the Machine Shop Forum
Knurling is not only an art form but also a mathmatical challenge.
I run the knurls dry, with a shot of coolant prior to engaging the workpiece to lubricate the roll pins.
Knurling is mainly decorative or non critical practical use i.e.
www.practicalmachinist.com /ubb/Forum1/HTML/001782.html   (910 words)

  
 Romheld - 130AM - Pressure and cut knurling tools
INTEGI, represented in Australia by Romheld, has released a range of cut and pressure knurling tools.Pressure knurling is done by cold forming the material whereas cut knurling actually removes material like a milling tool.
Variants include units with revolving heads that enable three different knurl patterns to be accommodated and pivoting/reversible head units which allow for both left and right-hand use.
The MFCNC series of tools are used for cut knurling and are comprised of two wheels plus a scale to set the correct position of the knurls for a given workpiece diameter.
www.ferret.com.au /articles/75/0c029e75.asp   (252 words)

  
 Review of the LMS knurling tool   (Site not responding. Last check: 2007-10-09)
In all of my knurling over the years I have found that with any knurling tool a fine knurl is usually all that you can achieve.
The only knurling tool that should be used on the Taig is the scissors or clamp style kurling tool - those that press in from the side will put too much strain on the cross slide screw and will wear the nut or even cause more damage.
The Knurling tool was of the usual mainland Chinese quality, which is to say a little bit rough.
www.cartertools.com /lmsk.html   (402 words)

  
 How to use a Knurling Tool
A knurling tool is used to press a pattern onto a round section.
The knurling tool is then pressed against the rotating steel and pressure is slowly increased until the tool produces a pattern on the steel.
As the saddle moves along the bed of the lathe the knurled pattern is pressed into the steel along its length.
www.technologystudent.com /equip1/knurl1.htm   (198 words)

  
 Knurling Information (via CobWeb/3.1 planetlab2.tamu.edu)   (Site not responding. Last check: 2007-10-09)
Knurling is widely used in industry for many applications.
It is usually produced by forcing a knurling die into the surface of a rotating part, displacing material from the original diameter.
Due to the many variables involved in any knurling operation (speeds, feeds, coolant, hardness of piece, condition of pins, etc.), determining proper blank diameters for circular pitch dies is a bit more difficult, and usually involves some amount of experimentation.
www.formrolldie.com.cob-web.org:8888 /new_page_1.htm   (461 words)

  
 Knurling   (Site not responding. Last check: 2007-10-09)
This is used on inside diameters of bushings to enable unrestricted pivoting of the poloyurethane bushing around the crush tube.
The knurling reduces the surface area of polyurethane in contact with the crush tube.
The SuperPro knurl bore keeps the lubricating grease intact for the life of the bushing, and eliminates the necessity for periodic re-greasing.
www.fulcrumsuspensions.com.au /superpro_product_features_knurling.html   (68 words)

  
 ROLLWALZTECHNIK - Conical Knurling Holders   (Site not responding. Last check: 2007-10-09)
The pitch of a conical knurl varies from the large end to the small end.
Therefore, if the knurl is moved axially, the pitch at the point of contact to the workpiece changes which may result in a different number of teeth rolled on the part.
Remember that (except for very narrow or low angle conical knurl patterns) the large end of the wheel must contact the large end of the workpiece to achieve a clean knurl pattern.
www.rollwalztechnik.de /docs/index_asp_id~29385_domid~1065_sp~E_addlastid~0_m1~29100_m2~29108_m3~29140_m4~29325_m5~29385_suma~.htm   (227 words)

  
 Knurling tool cuts diamond pattern
Originally using a knurling tool running at 60 to 70 rpm with a feedrate of 0.008 ipr, Lexington Machine asked Dorian Tool to recommend a tool that would allow the shop to decrease its production time.
By cutting the knurl pattern instead of forming it, Lexington Machine is currently running this tool at 350 rpm with a feedrate of 0.014 ipr.
Made of heat-treated high cobalt steel to withstand severe knurling operations, the knurl wheels are titanium-nitrate coated to reduce friction when knurling, increasing knurl quality and knurl wheel life and decreasing knurling force.
www.manufacturingcenter.com /metlfax/archives/1197/1197kt.html   (318 words)

  
 Knurling Tools and Knurl Holders
knurling tools and knurl holders are manufactured to extremely high standards from premium alloy tool steels.
We have the largest stock of circular and diametral pitch knurls in both inch and metric sizes available for immediate shipment.
Special knurls including attachment style dies as well as spline rolling dies can be made to your exact specifications.
www.accu-trak.com   (65 words)

  
 Special Operations   (Site not responding. Last check: 2007-10-09)
Knurl wheel is mounted on the thrust washer to ensure a smooth and even rotation of the knurl while knurling is performed.
Knurl wheels are mounted between the thrust washers to ensure a smooth and even rotation of the knurls while knurling is performed.
Internal knurling is used to reduce oversize internal diameters or for specific knurling applications.
www.doriantool.com /Knurling/Tooling/Special_Operations/special_operations.html   (227 words)

  
 how to Make Knurling
It's usually produced by using a special cutter that applies pressure onto the metal surface and is moved along and rotated around the circular surface to produce a diamond shaped profile.
What we would need to do first is to create the template for our knurling, let's say for example we know that our object to be knurled is about 90mm long and 60mm in diameter.
Knurling is "fairly" standard for most human sized objects as the knurl is designed for our skin on our hands to grip well.
www.meshweaver.com /frames/tutorials/knurling.htm   (1173 words)

  
 Knurling Tool Holder
Straight knurls are often used on the end of a shaft that is to be pressed into another part.
Straight or diamond knurl patterns are used to provide better grip on handwheels and thumbscrews.
Knurls are pressed or embossed into the surface of a part rather than cut.
www.sherline.com /3004pg.htm   (243 words)

  
 B94.6 - 1984 Knurling - Print-Book   (Site not responding. Last check: 2007-10-09)
This Standard covers knurling tools with standardized diametral pitches and includes dimensional relations with stock in the production of straight, diagonal, and diamond knurling on cylindrical surfaces having teeth of uniform pitch parallel to the axis of the cylinder or at a helix angle not exceeding 45 deg.
Such knurling is made by displacement of the material on the surface when rotated under pressure against a knurling tool.
This should improve the uniformity and appearance of knurling, eliminate the costly trial and error methods, reduce the failure of knurling tools and production of defective work, as well as decrease the number of tools required.
catalog.asme.org /Codes/PrintBook/B946_1984_Knurling.cfm   (129 words)

  
 FAQ Knurling a Piston
Should Bill knurl the piston to reduce the clearance, replace it, or have it built up (eg.
You might get as much as 0.030" or so from knurling but it won't be a permanent fix.
Knurling was, and I believe its main purpose was, to reduce or stop
www.steamengine.com.au /ic/faq/knurling-a-piston.html   (1224 words)

  
 Shop that can put knurling on handle bars in Bay Area, CA? - V-TwinFORUM.com
Knurl cutting is done on a lathe, knurl rolling is done with a wrench that accepts knurling wheels.
A knurling wrench is an expensive tool for a one shot job...
Seems like knurling them after fabrication would weaken the bars right at the place where there's most stress and torque.
www.v-twinforum.com /forums/showthread.php?p=953191#post953191   (607 words)

  
 www.myspace.com/merlek
Merle Knurling has red hair, some spiffy waistcoats and a cheap electric guitar.
On Merle Knurling's business card under his name there's a caption that reads "Low-Brow Humour and Song." He gave me his card once and I read it and laughed.
Merle Knurling is the most fun you can have on any kind of night.
www.myspace.com /merlek   (796 words)

  
 Corbin HCT-2 Bullet Knurling Tool
The diamond knurls form tiny "waffle" patterns on the bullet surface, which hold lubricant like a waffle holds syrup: up to 200 percent more lubricant in contact with the bore than conventional grooves.
The lead bullet is placed on a knurled roller V-way, and a steel embossing wheel is brought into contact with the other side of the bullet by lowering a large, expanded-neoprene covered grip and pressing down upon the bullet while you turn a small crank one or two spins.
Typical use of the HCT-2 would be to apply knurling to a box of 50 or 100 bullets once or twice a month.
www.corbins.com /hct-2.htm   (1013 words)

  
 IS-9: Knurling Tool
Replace the Knurl with the Knurl of the desired style and pitch and reassemble barrel, being certain to tighten barrel screws onto flats on Knurl Pins.
Insert barrels into body and adjust them down to a slightly larger diameter than that of the part to be knurled.
If knurling and drilling at the same time, use a concentric drill bushing and adjust lengthwise until correct relationship is arrived at between drill depth and knurl location.
www.sommatool.com /manuscripts/is-9.asp   (196 words)

  
 Knurling (via CobWeb/3.1 planetlab2.tamu.edu)   (Site not responding. Last check: 2007-10-09)
Iraqi soldiers rushed to a mainly Sunni area of west Baghdad on Monday to free 23 Iraqis who had been taken hostage at a fake checkpoint there, a government spokesman said.
Knurling The process of checking the surface of a piece of work by rolling depressions into it.
Knurling is a manufacturing process, typically conducted on a lathe, whereby a visually-attractive diamond-shaped (criss-cross) pattern is cut or
www.knurling.info.cob-web.org:8888   (258 words)

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