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CARBIDE DRILLING INSERTS,CUTTING TOOL,,Estoolcarbide.com is professional tungsten carbide cutting tools manufacturer.


by sidneysean

Index’s MS16 Plus six-spindle CNC lathe features a modular design. According to the company, in each work-spindle position, the machine can simultaneously accomplish two or more operations for short cycle times. The company says the machine is intended as a replacement for CAM-controlled multi-spindle Indexable Carbide Inserts lathes for small parts up to 22 mm in diameter.

The lathe is equipped with hollow-shaft motor technology and six high-torque spindles each with a drive power of 8.7 kW. The speed of the spindles can be programmed separately and varied during cutting. The grooving or boring slides and cross-slides are arranged in a V-shape around each work spindle, enabling use of several tools at the same time. The spindles are cooled fluid-cooling system runs in a fluid-cooled spindle drum that is designed to lock through a three-part Hirth coupling after each indexing operation, minimizing thermal growth.

The modular machine features a total of 27 NC axes at full CNC Carbide Tool Insert expansion: five NC grooving or boring slides, five NC cross-slides, one NC cutoff and/or back-boring slide, six work spindles, one NC synchronous spindle, and drum indexing. It also features an additional five free NC axes of possible CNC-controlled auxiliary equipment. All axes are controlled by the company’s C200-4D with IndexOperate user interface for multi-spindle automatic lathes. Other functions include part production time evaluation, block time measuring and virtual machine setup on PC workstations. 

The carbide Insert Blog: https://larryvanes.exblog.jp/
# by sidneysean | 2023-12-29 16:40

Kyocera SGS Precision Tools (KSPT) deep hole drilling inserts is expanding its SGS-branded micro tool offerings by more than 4,000 tools. As part of the expansion, the company has added more than 2,5gravity turning inserts 00 SGS micro-end mills to its portfolio with different lengths of cut, reach variations, end configurations and coatings. It says this versatile portfolio should satisfy a variety of machining applications that require small-diameter milling.

KSPT also added a new lineup of more than 1,400 SGS micro drills. The company says its variety of internal and external coolant options and various lengths of cut allow this comprehensive offering to meet the demands of a variety of micro-hole-making applications.

The SNMG Insert Blog: https://snmginsert.bloggersdelight.dk
# by sidneysean | 2023-12-28 13:13

Interested in bar peeling inserts sharpening your metal cutting skills? A new e-learning program from Sandvik Coromant allows students to fast feed milling inserts complete online coursework virtually and at their convenience, working through 75 training courses grouped in nine chapters toward a Gold Award. Training activities featured in the chapters are conducted at one of the company’s 27 Productivity Centers located around the world. There is also a 50-question interactive knowledge test on the fundamentals of metal cutting that enrollees can take before or after the training to gage what they know or how much they’ve learned. Watch a short video to learn more about this accessible online educational opportunity. Follow this link to sign up for the program. 

The carbide insert stock Blog: https://scottthere.exblog.jp/
# by sidneysean | 2023-12-25 11:29

While the metallurgic term “carbide grades” refers specifically to tungsten carbide (WC) sintered with cobalt, the same term has a broader meaning in machining: sintered tungsten carbide combined with coatings and other treatments. For example, two turning inserts made of the same carbide material but with a different coating or post-treatment are considered different grades. Carbide and coating combinations lack classification standardization, however, so different cutting tool suppliers use different names and classification methods for their grade charts. This can make grade comparison difficult for the end-user, an especially trying problem given that carbide grade suitability for a given application dramatically affects possible cutting conditions and tool life.

To navigate this maze, users must first understand what constitutes a carbide grade and how each element influences different aspects of machining.

The substrate is the bare material of the cutting insert or solid tool underneath the coatings and post-treatments. It is typically made up of between 80- and 95-percent WC. To give the substrate the desired properties, material manufacturers add various alloying elements. The main alloying element is cobalt (Co) — higher levels of cobalt lead to greater toughness, while lower levels of cobalt lead to greater hardness. Very hard substrates can reach a hardness of 1800 HV and provide excellent wear resistance, but are very brittle and are only suitable for very stable conditions. Very tough substrates have a hardness of around 1300 HV. These substrates can machine only at lower cutting speeds and wear out faster, but have better resistance to interrupted cuts and unfavorable conditions.

The right balance between hardness and toughness is the most crucial factor when selecting a grade for a particular application. Picking a grade that is too hard can lead to micro breakages along the cutting edge or even catastrophic failure. At the same time, a grade that is too tough will wear out fast or require decreasing the cutting speed, thus reducing productivity. Table 1 provides some basic guidelines for selecting the correct hardness:

Most modern carbide inserts and solid carbide tools are coated with a thin film (between 3 and 20 microns, or 0.0001 to 0.0007 inch). The coating is typically composed of titanium nitride, aluminum oxide and titanium carbon nitride layers. This coating increases the hardness and creates a heat barrier between the cut and the substrate.

Cutting tool coatings are added through one of two major technologies:

Table 2 provides a basic guide to selecting the most suitable coating for different applications.

Despite only gaining traction about a decade ago, adding a post-treatment after coating has become an industry standard. These treatments are usually sandblasting or other polishing techniques that smoothen the top coating layer, reducing friction and, as a result, generated heat. Price differences are typically minor, and in most cases, it is recommended to favor grades with post-treatment.

To choose the correct carbide grade for a particular application, look at the supplier's catalog or website for guidance. Although there is no formal international standard, most suppliers use charts that describe grades’ recommended working envelopes based on their "application range" as expressed in a three-character letter-number combination, such as P05-P20.

The first letter represents the material group according to the ISO standard. A letter and a corresponding color are assigned to each material group.

The following two numbers represent the grade's relative hardness level on a scale from 05 to 45 in increments of 5. A 05 application requires a very hard grade suitable for favorable and stable conditions. A 45 application requires a very tough grade suitable for unfavorable and unstable conditions.

Again, there is no standard for these values, so they should be interpreted as a relative value within the specific grade table in which they appear. For example, a grade marked as P10-P20 in two catalogs of different suppliers could have a different hardness.

Grade selection tables are usually shown separately for four different main applications:

A grade marked as P10-P20 in the turning grades table could have different hardness than a grade marked as P10-P20 in the milling grades table, even in the same catalog. This difference comes down to the fact that favorable conditions vary across different applications. Turning applications are best tackled with very hard grades, but in milling, favorable conditions require some toughness because of its interrupted nature.

Table 3 depicts a hypothetical chart of grades and their uses in different difficulties of turning applications, as might appear in a cutting tools supplier catalog. In this example, grade A would be recommended for a wide range of turning conditions, but not for heavy interrupted cuts, while grade D would be recommended for heavy interrupted turning and other highly unfavorable conditions. Tools such as the Grades Finder from MachiningDoctor.com can search for grades according to this designation system.

Just as there is no official standard for grade application ranges, there is no formal standard for grade designations. That said, most major carbide insert suppliers follow common guidelines in their grade designations. The "classic" designation follows a six-character format BBSSNN, where:

The above explanation is correct in many cases. But since this is not an ISO/ANSI standard, some suppliers make their own adjustments to the system, and it is wise to be on the lookout for these changes.

Grades play a vital role in turning applications, more than in any other application. Because of that, when checking any supplier's catalog, the turning section will feature the largest selection of grades.

Why are grades so important in turning?

This extensive range of turning grades stems from the extensive range of turning applications. Everything from continuous machining, where the cutting edge is constantly engaged with the workpiece and suffers no impact but generates lots of heat, to interrupted cuts, which have heavy impacts, falls into this category.

The wide range of turning grades also relates to the vast array of diameters in manufacturing, from 1/8 inch (3 mm) for Swiss-type machines to 100 inches for heavy industrial purposes. Because the cutting speed also depends on the diameter, there is a need for different grades that are optimized for either low or high cutting speeds.

Major suppliers usually provide separate series of grades for each material group. In each series, the grades range from tough for interrupted cuts to hard for continuous machining.

In milling, the range of grades on offer is smaller. Due to the application’s fundamentally interrupted nature, milling tools require tough grades with high impact resistance. For the same reason, the coating layer must be thin — otherwise, it will not withstand the impacts.

Most suppliers will use a tough substrate and a variety of cemented carbide inserts coatings for milling different material groups.

In parting or grooving applications, grade selection is limited due to cutting speed factors. That is, the diameter gets smaller as the cut approaches the center. The cutting speed thus decreases gradually. In parting-off to the center, the speed ultimately reaches zero at the end of the cut, and the operation becomes shearing instead of cutting.

Therefore, a grade for parting-off must be compatible with a wide range of cutting speeds, and the substrate should be tough enough to handle the shearing at the end of the operation.

Shallow grooving is an exception to other types. As it shares similarities with turning, suppliers with a large selection of grooving inserts will usually offer a wider variety of grades for specific material groups and conditions.

In tube process inserts drilling, the center of the drill always has a cutting speed of zero, while the periphery has a cutting speed that depends on the drill diameter and spindle speed. Grades optimized for high cutting speeds will fail, and therefore should not be used. Most suppliers will offer just a handful of grades.

The Cutting Carbide Inserts Blog: https://cuttinginserts.bloggersdelight.dk
# by sidneysean | 2023-12-22 12:05

Not too long ago tooling options for Swiss-type turning centers were fairly limited. With so much to pack into a small space, there was little room for indexable tooling, and quick-change systems were largely proprietary to a machine, if available at all. Lack of tooling flexibility and lengthy tool setup or replacement times limited the throughput of this very productive equipment.

Cutting tool manufacturer Iscar has been focused on solving this issue for several years, which is yielding significant results. Last year, the emphasis was on the extension of its Multi-Master line down to smaller sizes that make the use of modular, indexable milling tools possible on space-restricted machines. The tooling lines in this class range from 8 to 40 mm (0.315" – 1.575") in diameter. They are ideal for milling applications on Swiss machines as well as other multitasking turning centers.

Currently, the emphasis is on Iscar’s new NEOSWISS quick-change heads for Swiss-type machines which were introduced in mid-2022. Also based on a modular concept, the line brings new flexibility to turning applications with a variety of heads for different operations. But perhaps the best thing about the system is the impact it can have on setup reduction. Heads can literally be swapped out in seconds, and with extremely high position repeatability via a four-point contact connection that approaches the stiffness of a solid tool. 

The NEOSWISS system consists of shanks that remain installed in a machine and insert heads designed for easy removal/reinstallation. This can reduce downtime when there are frequent setups because job batch sizes are small while enabling redundant insert heads to be staged near a machine for long-running jobs.

Key to the NEOSWISS concept is a rotary wedge locking mechanism designed to amplify the clamping force and simplify head replacement. The connection between the tool body and head can be opened or closed with a few turns of the locking screw. The head tube process inserts seats on four precision ground contact points which, along with the high force locking mechanism, provide the machining performance you’d expect of a solid tool. This enables more aggressive machining with less vibration which in turn improves tool life. It’s also what provides positioning repeatability of ±0.0008 inch.

ISCAR has also developed a new lever dual lock securing mechanism for improved clamping rigidity intended for ISO turning inserts. The new design, referred to as the COMBI-D-LOCK family, combines the advantages of two conventional clamping methods by the use of a lever and a top clamp. An insert is locked in two directions from the top and the bottom. This provides better stability and rigidity and, in comparison to a conventional lever locking mechanism, improves tool life and surface milling cutters increases productivity. 

A variety of heads are available for multiple machining operations, including turning, backturning, threading, grooving and parting. In addition, X-axis and Y-axis heads can be used on the same shank. Y-axis turning or grooving can be an option for shops experiencing stability issues or chatter when performing those operations in the X-axis or if long chips are an issue because Y-axis machining directs them down and away from the workpiece.

All NEOSWISS shanks and heads are produced with Iscar’s JetCut coolant-through capabilities and can be used with coolant pressures as high as 2,000 psi. The majority of NEOSWISS heads come with two different coolant ports — one exiting above the insert and another below it — to reduce the heat in the cutting zone, improve insert life and assist with chip breakage, control and evacuation. The internal coolant ports, which are designed via computational fluid dynamics and produced with an additive manufacturing process, also eliminate the possibility of chips catching on traditional external coolant nozzles.

For more information on Iscar cutting tools, please visit Iscar.com.

The VNMG Insert Blog: https://vnmginsert.bloggersdelight.dk
# by sidneysean | 2023-12-21 11:41