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Another significant factor is the higher toughness of PVD coated tools. This becomes quite important for parting operations that cut to the center of a solid bar. As the insert cuts to center, keeping the cutting speed constant requires higher rpm on the spindle. The maximum rpm for the machine is reached, and at that point the cutting speed drops quickly, eventually reaching zero at the center. The slower speeds generate high forces on the cutting edge, making it more susceptible to chipping. By using tougher PVD coated inserts, edge reliability is improved significantly.

A. It is quite important to select feed rate and speed that is appropriate for the workpiece material. This ensures the best performance of the insert, and the best possible productivity.

A. The coating provides heat and wear resistance to the tool, and provides a barrier to the highly reactive chips that can quickly wear away unprotected carbide. By keeping the heat away from the core of the insert, it prevents deformation of the cutting edge that creates higher forces and ultimately insert failure.

A roughing grade is one that is very tough, has a slower surface speed it can run at, but holds up well to periodic cutting. However, the roughing that you do may be extremely different from the roughing that someone else does. For instance, a turner working on a very large lathe (VTL) who is producing massive stainless steel castings would take cuts that are at least 5 millimetres deep, but a turner working on a smaller lathe will be roughing with cuts that are considerably shallower.

All of our DNMG inserts come from a well-known manufacturer that specializes in producing high-quality and precise cutting tools. We make it simple for you to choose the turning insert that is most suited to the applications you have in mind by providing a selection of sizes to choose from. You have the option of turning inserts that have finishes that are based on either titanium carbonitride (TiCN) or titanium aluminium nitride (TiAlN+). When it comes to turning applications, precision and accuracy are absolutely necessary for success. At HUANA, we offer a comprehensive inventory of DNMG turning inserts to assist you in achieving success with the turning applications you are working on. Our experience will help you fine-tune your operations, and our DNMG 120408 turning inserts and other turning tools will boost production, enhance component quality, and eliminate mistakes.

Positive inserts are always the ideal choice for finishing work since they generate less cutting forces, which enables the user to get away with cutting at shallower depths, which in turn eliminates vibration.

The ideal choice for finishing procedures would be either 0.4mm or 0.2mm rad in diameter. This enables you to take the cut to the shallowest possible level without allowing vibration to occur.

The most often used roughing inserts are CNMG, DNMG, and TNMG respectively. Because of its 55-degree approach angle, DNMGs are a great solution for heavy roughing operations. This angle enables deeper depths of cut while simultaneously reducing the cutting weights.

A. Without a chip breaker, there really aren’t any good ways to control the chips, and turn-grooving would be extremely difficult. The only option is to use a peck cycle to stop the cutting process and clear the chip. But that reduces productivity, and the chips are still quite long and cause problems. The chip breakers developed for grooving over the last 20 years have been a tremendous improvement to the grooving process.

They will be able to quickly determine the grade of carbide that is most suited for the task at hand based on this information.

A. For most situations, a chip breaker geometry is very useful. The only materials that don’t need chip breaker geometry are cast irons since the material naturally forms only small chips. The chip breaker folds the chip so that its width is less than the width of the groove – important to minimize contact of the chip with the walls of the groove so they can be ejected easily. This contraction of the chip prevents scratching of the groove walls to maintain a good surface finish.

For groove-turning operations, the rigidity of the toolholder is even more important since the forces during groove turning are at 90° to the tool’s strength. So again, using a tool holder with the shortest cutting depth that will do the job is best. For groove turning the insert of choice is the longer two-edge style since the longer inserts are better able to resist the side forces generated in the turning operation. The geometry of the groove turning insert is also critical: it needs to have very good chip control properties in both the radial and axial cutting directions. Inserts for groove turning are designed with the proper chip breaker form around all the cutting edges, although that form may vary significantly from the front of the insert to the sides to handle the different flow of the chip in axial and radial grooving.

In situations such as these, it could be helpful to speak with one of our engineers and clarify your needs using information such as:

The geometry of the insert and its grade are complementary to one another. For instance, the toughness of a grade may make up for a lack of strength in an insert geometry if the insert geometry is designed properly.

Looking for insert DNMG120408 and DNMG150612? On an engraving machine, it is used to cut morsels, operate CNC lathes, and do other processing on medium-sized workpieces. Additionally, it may be used to insert a dnmg aluminium alloy tool. At the same time, an antidrill turbine was used for the cutting of morsel and various other inserts employed in dnmg 322. And used for the precise processing of a wide variety of composite materials found in high-hardness alloy, cnc lathe tool is extremely excellent and has a long life of inserts made out of dnmg 432 carbide material. Used in automobile maintenance as well as the production of construction vehicles, as well as other composite tools and equipment.

In the assembly process of high-hardness tool steel, DNMG120408 and DNMG150612 are primarily used for cnc lathes, milling machine processing, and inserts made of DNMG composite material. For purposes including but not limited to cutting, CNC, and general machining. Utilized as a turning tool for cnc machines; capable of inserting dnmg 432, aluminium, and other composite materials. For the use of cutting tools, reamers, reducing inserting dnmg, and morse taper shank drills. Polishing, twisting, drilling, and cutting are some of the other possible applications for the dnmg 432 inserts. Created to be compatible with any tool that has a straight shank and any insert dnmg inserts. At HUANA, you may also discover more excellent bargains on many types of products. There are discounts available on the DNMG inserts DNMG120408 and DNMG150612 that you may purchase for.

In order to achieve good chip control and machining performance, we must take a number of parameters into consideration when selecting the turning insert. These parameters include the geometry of the insert, the grade of the insert, the shape of the insert, the size of the insert, the nose radius, and the entering angle.

For most coating systems there is a trade-off between the higher wear resistance of CVD coatings containing aluminum oxide and PVD coatings that do not. With the Walter Tiger·tec® Silver PVD technology, the best of both worlds is provided – sharp edges and smooth coatings along with the superior heat and wear resistance of aluminum oxide. By providing all these advantages together, the insert has a wider application range, simplifying application for the customer while providing excellent performance.

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A number of different chipbreakers, including the TM, MA, PM, and HQ, are available for purchase in conjunction with the DNMG inserts. Because of the unique ways in which they are constructed, the TM and MA chipbreakers both boast impressively quick cutting speeds and feed rates. The PM and HQ chipbreakers are both designed for use in situations that need medium-duty milling. The HQ chipbreaker is the tool that should be utilized if there is a need for increased machining stability. The MA chipbreaker is designed for usage with shallow cutting depths and relatively modest feed rates, which optimizes its performance under these conditions. This chipbreaker generates low cutting forces and is thus suitable for use on components with thin walls and thin shafts.

To begin, it is necessary for us to determine if the inserts will be utilized for roughing, finishing, or simply some basic turning.

Depending on the horsepower of your machine and the amount of depth of cut you want to take, the roughing applications you are working on will often need a radius of either 0.8mm or 1.2mm.

DNMG inserts typically have an incorporated angle of 55 degrees and are used most often for shaft turning applications in addition to recessing on diameters. Cutting forces produced by DNMG inserts are lower than those produced by other inserts with greater included angles. The unique construction of DNMG inserts helps to prevent cratering. Steels made of carbon and alloys, stainless steel, and high-temperature alloys may all benefit from using this material. (-) Machining a Wide Variety of Materials with Double-Sided 55° Rhombic Inserts at Medium Cutting Conditions (+). The dimensions of these inserts are denoted by a number with two digits. The first figure represents the number of eighteenths of an inch that are present in the insert’s width, and the second digit represents the number of twenty-fourths of an inch that are present in the insert’s length.

HUANA is able to be of assistance to you in your search for DNMG turning inserts for your company. As specialized suppliers, HUANA provide a comprehensive catalogue of DNMG 120408 inserts that are ready to be sent to locations of business. Diamond or “D” shaped rotating inserts with a 55-degree angle are what are referred to as DNMG inserts. They are a multipurpose cutting tool that may be used for grooving, profiling, finishing, and a variety of other machining processes.

HUANA turning inserts are versatile tools that may be used in a variety of standard and bespoke turning applications. This guarantees that the results you get each and every time are precise and clean. HUANA provides speedy delivery on all of our performance turning tools, which include a range of tools for grooving and cut-offs, profiling, railroad turning, and turning of both the outside and inside diameters of objects.

A general rule for all grooving operations is to choose the widest insert possible that will do the job. This provides the strongest insert to handle the widely varying forces during the various phases of the cut, and the insert also has more mass to handle the heat generated especially at the bottom of the groove.

A. Bad things. Depending on how far the cutting parameters are from the recommended values, there can be a wide range of effects. At the very least the tool life will be reduced. Improper parameters can also lead to chipping of the cutting edge, severe chip control problems, poor surface finish, and other issues; at its worst it can cause insert fracture and damage to the workpiece and the toolholder.

Walter AG is one of the world's leading metalworking companies. As provider of specialized machining solutions, Walter offers a wide range of precision tools for milling, turning, drilling and threading applications. Walter works together with its customers to develop custom solutions for fully machining components for use in the aviation and aerospace industries, as well as automotive, energy, and general engineering. The company demonstrates its Engineering Kompetenz at every stage of the machining process. As an innovative partner capable of creating digital process solutions for optimal efficiency, Walter is pioneering Industry 4.0 throughout the machining industry.

Additionally, HUANA is where you can get additional excellent offers on insert! Keep an eye out for sales and discounts to ensure that you receive the best price on your DNMG insert purchase. We are here to assist you in making the most of the many discounts and deals that are available. Check out HUANA, and have a fantastic time while you’re there shopping! At HUANA, you may relax while you’re shopping. Our goal is to make the process of purchasing online as easy and uncomplicated as possible. You may get nice products to suit your desire if you come back every day since there are fresh drops of DNMG insert. In the event that you are looking for DNMG 322 inserts, you may find them on our website! During your time here on our website, you may go shopping for insert at costs that are lower than retail. Simply reading the evaluations will provide you with all of the important information about the insert!

A. The multi-functional chip breaker has a form that varies around the insert cutting edge. The geometry on the front edge is designed for optimum chip form in radial operations and provides short, tight chips that are easily evacuated even when cutting low carbon steels like 1018. The chip breaker geometry on the sides of the insert comes into play during the axial turning phase of groove turning. Because the forces and material flow are different than in radial operations, the edge geometry and position of the chip breaking elements need to be different to get proper chip control. Finally, the corners of the insert are also different in form so that the insert leaves a good surface finish during axial turning operations.

When it comes to selecting a turning insert, choosing the one that is most appropriate for the work at hand is just half the fight won. There are further procedures that also need to be completed, such as picking the most appropriate chip breaker and grade. When selecting a DNMG 322 insert, the very first thing you need to think about is whether you will be using it for basic general turning, finishing, or roughing. In this context, it is essential to keep in mind that the critical inserts are often the ones with the most force. As a result, DNMG inserts are the most ideal choice for applications involving general turning and roughing processes. The reason for this is due to the fact that their thickness and robust insert forms make it possible to achieve greater feed rates and deeper cut depths.

A. As with most turning applications, tool choice for grooving operations depends on the details. For radial grooving operations, tool choice is straightforward. The toolholder needs to have the proper depth of cut capability to complete the groove, and securely clamp the insert. Choosing the toolholder with the shortest cutting depth that will do the job is best because the rigidity of the tool has an influence on tool life of the insert. The more rigidity and clamping force on the insert, the longer it will last.  Insert choice depends on the workpiece material and the cycle time requirements. By having the appropriate  geometry for the operation, the chip will be controlled and will easily exit the groove. Radial grooving operations can be done very effectively with either short single edge inserts, or with the longer two-edge inserts.

When it comes to the extensive assortment of DNMG turning inserts and chipbreakers that we have available, everything is feasible. We designed each of these solutions, which include DNMG inserts of varying forms, sizes, and thicknesses, with the same purpose in mind: to enhance the productivity and tool life in your turning applications. The extensive range of HUANA DMNG inserts, which covers all material groups, makes it possible for you to accomplish your objectives in terms of material removal rates, tool life, and surface polish. Huana has been in the business of producing DNMG inserts of every conceivable kind for a significant number of years at prices that are quite reasonable.

A. The cutting edge geometry determines the shearing action during the metal cutting process, as well as the strength of the cutting edge. A sharp and positive cutting edge will shear the workpiece material with low cutting pressure, and as a result generate less heat and also have less tendency for work hardening of the workpiece material. The trade-off is that the sharp edge is more susceptible to chipping from interruptions in the cut or higher feed rates. A stronger and more negative cutting edge geometry will better withstand higher forces and interruptions, but the price is higher cutting pressures, more heat generated, and a higher likelihood of work hardening.

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The following guidance ought to provide you with a solid foundation in understanding which grade is appropriate for whatever material and application.

Negative inserts are the most robust and effective choice for roughing and general turning applications. This is because they provide greater feed rates and deeper depths of cut than positive inserts, which are limited by the strong insert forms and thickness.

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The shape of the insert should be chosen with consideration given to the appropriate level of accessibility provided by the tool’s entry angle. In order to ensure the insert’s strength and dependability, the nose angle should be increased to its maximum achievable value. Having said that, this aspect needs to be weighed against the several different cuts that have to be carried out.

Because they are able to generate less of a cutting force, DNMG inserts are always the best choice for finishing work. This is because they are used in finishing tools. As a result, DNMG inserts may easily make do with shallow cut depths while also removing vibration from the cutting process. One of the most well-known roughing inserts is called the DNMG, which stands for the Diamond 55-degree insert. These inserts come with a 55-degree incorporated angle and may be used efficiently for shaft turning and recessing thanks to their versatility.

A. Work hardening occurs during metal cutting due to the deformation of the workpiece material below the cutting edge of the insert. Use an insert with a relatively sharp edge preparation so the cutting edge creates as little pressure as possible. Ensure that the feed rate is larger than the minimum recommended for the insert geometry and width.

PVD coatings are used for most of the grooving and parting operations for a number of reasons. Since PVD coatings are thinner and adhere to sharp cutting edges better, the cutting edges can be sharper than with a typical CVD coated tool. The advantage is that the cutting edge generates lower forces, which in turn create less heat, and therefore less wear; and along with a very smooth surface, PVD coatings are less susceptible to built-up edge that is common in stainless steels and high temperature alloys. The sharper edge also significantly reduces the tool pressure that leads to work hardening of those alloys susceptible to it.

A finishing grade is going to be the most difficult grade, and it’s going to be run at a faster surface speed. This won’t hold up well under strong vibration or cuts that are sporadic and frequent.