Rants and Raves regarding carbide inserts, cbn inserts, ceramic inserts, cermet inserts, and inserts in general. Occassionaly will take about nothing, and sometimes other cutting tools. Most of all a resource for information on cutting tools.
Korloy MGT Face Grooving Inserts or MGT tools, have double ended cutting edges, provide economic tooling cost. More so than conventional single ended type tools.
Insert grades available for the machining of carbon steel, alloy steel, stainless steel, and cast iron.
To cope with the increased needs for face grooving and boring of various material, the newly designed chip breakers are able to acquire good chip control.
Korloy Face Grooving Inserts provide various holder line-ups to expand your option, while adding more features and benefits.
Sumicrystal UP Cutting Tool Blanks 2 pictures above
What is this stuff? Synthetic Monocrystalline Diamonds: Perfectly flat, defect free synthetic diamonds- Monodie-100 and Monodie-111 from DeBeers, U.K. and Sumicrystals from Sumitomo Electric Industries, Limited., Japan-are used for specific customer requirements.
What is a PD Dresser Blank? The Sumicrystal PD dresser blanks are single crystal diamonds processed into the shape of a long, thin prism. They provide automated and high precision dressing through reliable performance and long tool life.
Ok, now what about the UP Cutting Tool Blanks? The Sumicrystal UP cutting tool blanks are just that...cutting tool blanks. They were developed by Sumitomo Electric to provide high performance and reliability for high precision cutting tools. They work well in ultra-precision machining processes, for machining products such as memory discs and polygon mirrors.
Now that I know, where can I get it? Interesting that you should ask. The pictures above are tools that are available. If you are s, interested in purchasing these tools, please contact us a sales@pgstools.com.
An important criterion for the economical application of cutting tools is their life in relation to the metal removal rates, especially with two materials such as ceramic and CBN. The latter is much more expensive. Thus, comparison of tool wear becomes most important.
The two materials show marked performance differences in both size and surface finish in roughing, interrupted, and finishing cuts. In comparison to grinding, however, both materials will achieve much higher metal removal rates.
CBN will out-perform ceramic in interrupted cuts. With depth-of-cut of 0.060 inch to 0.120 inch and a speed of 350 sfpm with 0.010 to 0.020 inch feed per revolution, ceramic often will fail when entering the interruption. With CBN, a tool life up to 20 minutes can be achieved with a half-inch round insert, under the above conditions. Flank wear in interrupted cuts is more irregular than in continuous cuts and can shorten tool life. Solid CBN inserts have greater flank wear resistance and are superior to ceramics for roughing, especially where the turning has interrupted cuts.
For finishing cuts where small depths of cut and low feed rates are required to achieve superior surface finishes, CBN inserts cannot equal the tool life of ceramic inserts. Under these conditions, the ceramic insert has less than half the flank wear of CBN after 30 minutes cutting time.
Considering that CBN is ten times more costly than ceramic for the same size and geometry insert, CBN economically can be justified only for machining heat treated steel in those situations where ceramic fails completely or breaks down before finishing the workpiece.
Ok, so in the title it says that on from time to time there would be an occasional rant about nothing. I haven't faithfully held my end of the bargain on that one. Therefore folks, here you go, a rant about nothing.
Over the weekend at our church, I had the pleasure of playing my acoustic guitar with some very talented musicians, in front of a few thousand people. I tell you what, in my life, this was up there with being one of the more difficult thing I've ever had to do. My attempts at public speaking, while enjoyable would be number one, but after time that becomes less nerve inducing. But doing something that has always been a hobby, in front of a large group of people was enough to put the sweat glands into overload. On more than one occasion it seemed like they had turned up the heat, then I realized, oh, its just me.
I am grateful that I was given the opportunity to share the talent that I have been blessed with. I was feeling pretty good about my guitar playing skills, until I came across the following video, shown below. I know now that I still have a long way to go. Hope you enjoyed the rant, now enjoy a truly talented musician.
A knurling device is used in combination with a lathe to stamp the ends of metal tubes and other shafts. The stamped ruts might also act as hand grips for the user or superior grip for rubber and the plastic covers. The knurling tool itself comprises of various rotary cutters that are held against the metal shaft as it turns on the metal lathe at a moderately slow speed (500 rpm on average). Turning is a technique by which cylindrical pieces of metal lathe or wood are spun in place by a variable-speed electric motor. As the piece spins, a variety of cutting tools could be placed against it to take away fabric or cut shapes. A knurling tool falls among an engraver and an embosser.
There are usually three shapes created by most knurling tools - straight lines, slanting lines and a diamond pattern. Knurling tools do come in different range of sizes and amazing designs, depending on the basis of the piece. The diamond pattern is mainly familiar with hand grips as it generates the most grips among a user's hand and the shaft. Diagonal and straight knurls are usually used to give additional traction to an outside handle or other connective piece. In order to generate a knurl pattern, the metal lathe should hold the metal piece entirely straight - a condition machinist call 'true'. As the lathe begins to roll, a particular holder for the knurling tool is attached to the perform table.
The knurling tool itself is fixed into the lathe and cautiously directed to the turning piece with a tiny crank. Since knurling is extremely a rough process, the machinist must use a liberal supply of machine oil on the rotating shaft. A knurling tool hardly ever makes a complete imprint the first time it is pressed against the shaft. Machinists usually make several passes with the knurling tool, allowing the individual cutters to make small bites into the metal. A knurling tool is best compatible for softer metals such as aluminum or normal grade steel. Hard metals such as titanium would most probable ruin the tool before any embossing could take place.
About the Author: John Russel is a Copywriter of Lathe chucks. He written many articles in various topics. For more information visit: Chuck manual contact him at aworkholding@gmail.com
In every machining system, one simply can't ignore the important role that cutting tools play. Oftentimes, the quality of a finished product would rely on the quality of the cutting tools. The quality and the performance of cutting tools would also directly affect a machining system's overall productivity. It is because of their importance that manufacturers would take into consideration several criteria before eventually buying a piece of cutting tool for their machining system. Included in these criteria are the tools ability to last long under rigorous operating conditions and their capability to perform at very high speeds. Also important is the tool's resistance to wear and tear, including resistance to breakage, edge and flank wear, cratering or top wear, chipping, built-up edge (BUE), deformation, and thermal cracking.
1. Kinds Of Tools
As the demand for better cutting tools increase, cutting tool suppliers also continuously develop products that can pass manufacturers' demands. Through the years, a lot of materials for the manufacture of cutting tools have been experimented upon; some have passed the standards while others were simply dropped. Today, there are only two types of cutting tools heavily favored in the machining industry: high speed steel (HSS) cutting tools and carbide cutting tools; and it seems that carbide cutting tools have slightly overtaken the other in popularity. So, what advantages do carbide cutting tools have over their HSS counterparts? Considering their lead in popularity, it is clear that the benefits of carbide cutting tools outnumber that of HSS cutting tools. And we'll understand these benefits better if we know what carbide really is.
In chemistry, carbides refer to any group of compounds made up of carbon and one other element that can be a metal, boron, or silicon. There are actually many compounds belonging to this group, among the more popular of which includes:
In the 20th century, carbides have been used for a lot of industrial applications. Carbides used in industrial applications are often called cemented carbide products and are classified in three major grades:
- Wear grades
Used primarily in dies, machine and tool guides
- Impact grades
Higher shock resistance carbide products used for dies, particularly for stamping and forming
- Cutting tool grades
Carbide tools used for cutting
4. Carbide Cutting Tools
Cutting tool grades of carbides are further subdivided into two groups: cast-iron carbides and steel-grade carbides. As their name implies, cast-iron carbides are specifically made for cutting cast-iron materials. These carbides are more resistant to abrasive wear, protecting the carbide cutting tool from edge wear due to the high abrasiveness of cast-iron. Steel-grade carbides, on the other hand, are specially made to resist cratering and heat deformation that may be caused by the long chips of steel on higher cutting speeds. Whichever grade of carbide is used in a carbide cutting tool, the main carbide material used in its manufacture is tungsten carbide (WC) with a cobalt binder. Tungsten carbide is well known for its hardness and resistance to abrasive wear. Cobalt, on the other hand, is used to further toughen the tool's surface.
5. Other Variants
Aside from tungsten carbide and cobalt, other alloying materials are added in the manufacture of carbide cutting tools. Among them is titanium carbide and tantalum carbide. Titanium carbide helps the carbide cutting tool to resist cratering while tantalum carbide can reduce heat deformations in the tool. Also commonly used in the cutting industry today are coated carbide cutting tools. Aside from the basic carbide materials, titanium carbide, titanium nitride, ceramic coating, diamond coating or titanium carbonitride are used as coating materials. The different coating materials aid the carbide cutting tool differently, although they are generally used to further toughen the cutting tool.
6. Benefits of Carbide Cutting Tools
- Toughness
- Exceptional resistance to abrasion
- Superior wear resistance
- Resistance to cratering
- Resistance to thermal deformations
- High modulus of elasticity
- Chemical inertness
- Torsional strength twice that of HSS
- Compressive strength
Plastics and reinforced plastics can be machined with PCD Inserts and PCD tooling.
The general perception is that plastic materials are easy to machine. However, soft plastics are not always so stable, and the machining process, which always generates heat, can affect dimensional and material properties like surface texture and colour, if the correct cutting tool is not applied.
PCD tools are particulary effective on abrasive plastics where plastics are reinforced with carbon fibres (CF) or glass fibres (GF).
