Tuesday, 4 December 2012

Advanced Technical Cuttings Tools For Industrial & Household Purposes In India

Cutting tool is any tool that is used to remove material from the work piece by means of shear deformation. So there are various types of cutting tools are available in the markets for various purposes.

Now days there are various manufacturing units are manufacturing various types of cutting tools for various purposes. Now we discuss some types of cutting tools here like Linear cutting tools include tool bits and broaches. Rotary cutting tools include countersinks and counter bores, taps and dies, milling cutters, reamers, and cold saw blades. Other cutting tools, such as band saw blades, hacksaw blades, and fly cutters, combine aspects of linear and rotary motion.

Cutting tools with inserts (index able tools) are cutting tools are often designed with inserts or replaceable tips (tipped tools). In these, the cutting edge consists of a separate piece of material, brazed, welded or clamped on to the tool body. Common materials for tips include tungsten carbide, polycrystalline diamond, and cubic boron nitride. Tools using inserts include milling cutters (end mills, fly cutters), tool bits, and saw blades.

Solid cutting tools are typical tool for milling and drilling has no changeable insert. The cutting edge and the shank is one unit and built of the same material. Small tools cannot be designed with exchangeable inserts.

Holder is use a cutting tool within a CNC machine there is a basic holder required to mount it on the machines spindle or turret.

Tool setup is detailed instruction how to combine the tool assembly out of basic holder, tool and insert can be stored in a tool management solution.

The cutting tool along with the role of the cutting tool supplier is changing more rapidly than any other part of the machining process. In fact, so much about cutting tools has changed that any progressive machining facility today needs to step back now to re-evaluate its cutting tool thinking. It is not only specific choices in tools that need to be examined. Fundamental assumptions affecting all of the shop’s tooling need to be re-examined, as well. Some of those core assumptions are bound to be outdated today, because the rules of cutting tools have changed.

So there are various industries which are engaged in manufacturing cutting tools which are used for various purposes in our day to day life. A few types of cutting tools include: broach, a metal working tool with chisel points mounted on a piece of steal; end mill, a tool used in industrial milling applications; reamers make existing holes dimensionally more accurate and improves the finish of the surface material in metalworking; drill bits, which are used to create cylindrical holes by rotation; countersink, a tool used to make a conical hole; diamond blade, which is often found as a circular saw blade used for cutting hard materials; and diamond tools, which contains diamond segments that help to cut through non-ferrous materials, or metal materials containing no iron. These cutting tools can cut through wood, plastic, composite and metal, depending on what tool you’re using and what size and shape of hole you desire.

Wednesday, 31 October 2012

Cutting Tools Manufacturer & Supplier, Cutting Tools in India

Cutting tools have major impact in our lives; they are used frequently in our day to day life. There are various types of cutting tools are available for performing various types of works. These cutting tools are manufactured with used of different types material which are manufactured in various industries in India and these cutting tools are based on international standard and with use of latest technology by the use of various highly technology also.

Cutting tools are classified according to the shape of the head as straight, bent, cranked, and round-nosed cutters and according to the cross section of the holder as rectangular, square, and round. Cutting-tool designs may feature a head or cutting blade that is welded on, a blade that is soldered on, a head that is guided by a slide or produced in the form of an insert, or a blade that is mechanically fixed. Various types of cutting tools are distinguished according to the intended purpose, including straightway, facing, cut-off and grooving, boring, thread-cutting, radiusing, and shaping cutters. Depending on the machining process, cutting tools may also be classified as roughing, finishing, fine turning, and smoothing. A distinction is made between right-hand and left-hand cutters according to the feed direction. Among the materials used for the cutting element are tool steel, including high-speed steel, hard alloys, mineral and ceramic materials, synthetic diamonds, and Elbor synthetic corundum like material).

Cutting tool materials can be divided into two main categories: stable and unstable.

Unstable materials (usually steels) are substances that start at a relatively low hardness point and are then heat treated to promote the growth of hard particles (usually carbides) inside the original matrix, which increases the overall hardness of the material at the expense of some its original toughness. Since heat is the mechanism to alter the structure of the substance and at the same time the cutting action produces a lot of heats, such substances are inherently unstable under machining conditions.

Stable materials (usually tungsten carbide) are substances that remain relatively stable under the heat produced by most machining conditions, as they don't attain their hardness through heat. They wear down due to abrasion, but generally don't change their properties much during use.

Most stable materials are hard enough to break before flexing, which makes them very fragile. To avoid chipping at the cutting edge, most tools made of such materials are finished with a slightly blunt edge, which results in higher cutting forces due to an increased shear area. Fragility combined with high cutting forces results in most stable materials being unsuitable for use in anything but large, heavy and stiff machinery.

Unstable materials, being generally softer and thus tougher, generally can stand a bit of flexing without breaking, which makes them much more suitable for unfavorable machining conditions, such as those encountered in hand tools and light machinery.

These cutting tools are easily available for the useful buyers in everywhere in the markets also these not much costly and easily anybody can avail these cutting at very cost effective prices also.

Wednesday, 18 July 2012

Properties of Cutting Tools


Many types of tool materials, ranging from high carbon steel to ceramics and diamonds, are used as cutting tools in today’s metalworking industry. It is important to be aware that differences do exist among tool materials, what these differences are, and the correct application for each type of material.

Cutting tool and the Industry Advancements
 
Cutting tool users can’t afford to ignore the constant changes and advancements that are being made in the field of tool material technology. When a tool change is needed or anticipated, a performance comparison should be made before selecting the tool for the job. The optimum tool is not necessarily the least expensive or the most expensive, and it is not always the same tool that was used for the job last time. The best tool is the one that has been carefully chosen to get the job done quickly, efficiently, and economically.
A cutting tools must have the following characteristics in order to produce good quality and economical parts:

Hardness — Harness and strength of the cutting tool must be maintained at elevated temperatures, also called hot hardness.
Toughness — Toughness of cutting tools is needed so that tools don’t chip or fracture, especially during interrupted cutting operations.
Wear Resistance — Wear resistance means the attainment of acceptable tool life before tools need to be replaced.

The materials from which cutting tools are made are all characteristically hard and strong. Below are the characteristics mentione
 
Plain carbon tool steel is the oldest of the tool materials dating back hundreds of years. However, because it is quickly over tempered (softened) at relatively low cutting temperatures (300 to 500°F), it is now rarely used as cutting tool material except in files, saw blades, chisels, etc. The use of plain high carbon steel is limited to low heat applications.

The hardness of the carbide is greater than the of most other tool materials at room temperature and it has the ability to retain its hardness at elevated temperatures to a greater degree, so that greater speeds can be adequately supported. Two-thirds of all carbide tools are coated. Coated tools should be considered for most applications because of their longer life and faster machining. Coating broadens the application of a specific carbide tool.

Friday, 6 July 2012

Variety Of Cutting Tool Materials

Today cutting tools are used for variety of applications and have positioned themselves as significant equipments. Hence, it is vital to know about their characteristics and types.

Materials of the cutting tool must be equipped wit number of vital properties to prevent excessive wear, fracture failure and high temperatures in cutting.

The following characteristics are critical for cutting materials in order to pass through the heavy conditions of the cutting process and to develop high quality and affordable parts:

1) Toughness: The material should have ability to absorb energy without failing. If the cutting equipment fails soon that it is not strong enough.

2) Wear Resistance: There is a strong relation between hot hardness and wear resistance, latter depends more on hot hardness.

3) Surface Finish Of The Tool: It is also significant characteristics, which is chemical inertness of the tool material with respect to the work material.

4) Thermal Conductivity Of The Tool Material: It is affected by which maximum value of the cutting temperature at tool-chip interface.

Cutting tool materials

Carbon Steels is the oldest of the tool material. The carbon content is 0.6~1.5% with small quantities of silicon, chromium, manganese, and vanadium to refine grain size. Maximum hardness is about HRC 62. These materials possess low wear resistance and low hot hardness. The application of these materials is now limited.

High-speed steel (HSS) is another material, which was first produced in 1900s. They are alloyed with vanadium, cobalt, molybdenum, tungsten and chromium. The aforementioned are added to elevate the hot hardness and wear resistance. It can be hardened to various depths by appropriate heat treating up to cold hardness in the range of HRC 63-65. The cobalt component lends the material a hot hardness value, which is much greater than carbon steels. The high toughness and good wear resistance makes HSS suitable for all type of cutting tools with complex shapes for relatively low to medium cutting speeds. The most widely used tool material today for taps, drills, reamers, gear tools, end cutters, slitting, broaches, etc.

Cemented Carbides has also paved way in many industries. It was debuted in the 1930s. Most important tool materials today; cemented carbide is recognized because of their high hot hardness and wear resistance. The main drawback of cemented carbides is their low toughness. These materials are developed by powder metallurgy methods, sintering grains of tungsten carbide (WC) in a cobalt (Co) matrix (it provides toughness). There may be other carbides in the mixture, such as titanium carbide (TiC) and/or tantalum carbide (TaC) in addition to WC. In spite of more traditional tool materials, cemented carbides are present as inserts generated by powder metallurgy process.

Tuesday, 26 June 2012

State-Of-The-Art Cutting Tools

Cutting tools with computerised controls result in few mistakes and provides higher level of accuracy reducing waste. Light weight cutting tools are also available in the market. There are numerous manufacturers, suppliers and exporters dealing in cutting tools.

Since the 1960s the development of powdered metal high-speed steel has allowed the production of near-net shaped cutting tools such as drills, milling cutters and form tools. The use of coatings, particularly titanium nitride, allows high speed steel tools to cut faster and last longer. Titanium nitride provides a high surface hardness, resists corrosion, and it minimizes friction. There are plenty of different tools that are manufactured with a purpose of cutting such as scissors, guillotine paper cutters and many others. One of the most popular types of such tools is the rotary trimmer, which is used by professional artists and graphic designers, teachers, framers and even crafters. They are versatile and easy to use. It’s actually one of the fastest ways to trim paper and photographs.

All such tools have a finite working life. It is not a good practice to use worn, dull tools until they break. This is a safety hazard which creates scrap, impacts tool and part costs, and reduces productivity. Comfort and effortless tool is the most popular among users. Smooth handle and pleasant appearance are important factors to attract people desire to purchase any tool for the purpose of cutting. Carbide cutting tools have gradually replaced the high-speed steel tools used for cutting, especially circular tools.

In industry today, carbide tools have replaced high-speed steels in most applications. These carbide and coated carbide tools cut about 3 to 5 times faster than high-speed steels. Cemented carbide is a powder metal product consisting of fine carbide particles cemented together with a binder of cobalt. Every manufacturer of carbide cutting tools offers a variety for specific applications. The proper choice can double tool life or double the cutting speed of the same tool. Shock-resistant types are used for interrupted cutting. More heat-resistant tools are needed for machining the superalloys. There are no effective standards for choosing carbide grade specifications so it is necessary to rely on the carbide suppliers to recommend grades for given applications.

Cutting is nowadays becoming a part of our day-to-day lives. Using computerised controls bring out few mistakes and provides high level of accuracy reducing waste. This feature allows the user to cut with precision. Light weight tools for cutting are also available in the market. Coated tools should be considered for most applications as they tend to have longer life and faster and accurate cutting. There are varieties of cutting tools to perform different tasks available in the market. Moreover, there are numerous manufacturers, suppliers and exporters dealing in such kinds of tools.

Friday, 15 June 2012

Cutting Tools Safety Tips

There are plenty of different cutting equipment out there including scissors, guillotine paper cutters and many others, which can be used for a wide variety of jobs. Today, hand tools for cutting purposes have acquired a very important place in our daily routine work and home repairs. All are used for a specific purpose should be of the appropriate size. You should have the correct sized equipment. Forcing a small hand equipment to do the job of a large one may result in tool damage or injury. Sharp and cutting tools can cause cuts and puncture wounds, if not handled properly. Injuries can range from small cuts that require nothing more than a band aid to deep lacerations that require immediate medical attention. Always choose the right tool for the job. Substituting the wrong tool for the job can lead to an accident or injury. Following are some safety measures or tips that should be taken to prevent any kind of injury while using cutting tools.

  • One must wear personal protective equipments such as safety glasses and well-fitting gloves before cutting any object. The cutting edge is very sharp. It is important to wear gloves while handling or installing tools for cutting purposes to prevent injury.
  • Always try to use the correct tool for the job. Hand tools are commonly designed and used for small gardens. Using the wrong tool for a task is not only inefficient, but may damage the tool and endanger the user.
  • Keep your cutting tools away from children and pets. Many of them are sharp and pointed. Children may hurt themselves if they handle these tools without supervision.
  • Workers should use only quality tools that are sharp and in good condition. If a tool is broken, avoid using that tool.
  • The safe way to work with a sharp or cutting tool is to concentrate on the task at hand. Maintain your focus by keeping your eyes on the object while cutting. Your hands and body should be clear of the cutting stroke.
  • Sharp edged tools should be stored in a sturdy tool box or on a tool rack with the sharp edges suitably covered.
  • Maintaining cutting equipment ensures a smooth cut and better handling. A sharp knife will ensure a smooth cut while a knife with a dull edge has a greater risk of slipping off the material and causing harm.

Wednesday, 23 May 2012

Cutting Tools - Modern Life Relevance

Continuous improvement of cutting tools is more than an industry buzzword; it is the life blood of any profitable metal working shop. Learning how to optimize the use of cutting tools can be the key to the lower cycle time and longer tool life.
 
Cutting equipment have been ever changing in order to function more efficiently. New materials and production techniques greatly influenced their performance and service life. The advancement of cutting tools can be vividly seen in the metal cutting industry. So, if one is familiar with domestic equipment they will find out that industrial tools are based on the same principles and share the same mechanical properties.

Aspects of quality and economy of industrial production processes are to a high degree determined by the selection and the design of the appropriate cutting tool. Cutting equipment is a component most stressed, and therefore limits the performance in mechanic operations. Among various stresses, thermal and mechanical loads affect the cutting equipment edges in a continuous of intermitting way. As a result, good wear resistance, high thermal stability and high mechanical strength are the properties required for cutting materials. Thus, new materials and advance coatings are being developed to prolong tool life.

Cutting Tool Materials

Principal categories of cutting tools include single point lathe tools, multipoint milling tools, drills, reamers, and taps. All of these equipment may be standard catalog items or tooling designed and custom-built for a specific manufacturing need.

Different machining applications require different cutting tool materials.

The ideal cutting equipment material should have all of the following characteristics:

  • Harder than the work it is cutting
  • High temperature stability
  • Resists wear and thermal shock
  • Impact resistant

As rates of metal removal have increased, so has the need for heat resistant cutting tools. The result has been a progression from high-speed steels to ceramics and other super hard materials. In industry today, carbide tools have replaced high-speed steels in most applications. These carbide and coated carbide tools cut about 3 to 5 times faster than high speed steels. Every manufacturer of carbide tools offers a variety for specific applications. The proper choice can double tool life or double the cutting speed of the same tool. Shock-resistant types are used for interrupted cutting. Harder, chemically-stable types are required for high speed finishing of steel. More heat-resistant tools are needed for machining the super alloys, like Inconel and Hastelloy.

Two-thirds of all carbide tools are coated. Coated tools should be considered for most applications because of their longer life and faster machining. Coating broadens the application of a specific carbide tool.