Practical of diamond tools

Diamond tool is mainly used for a variety of non-ferrous metals such as aluminum turning , copper, magnesium and its alloys , tungsten carbide and wear strong fiber reinforced plastic materials, metal matrix composites, wood and other non-metallic materials . When cutting speed, feed  concrete diamond blades rate and depth of cut depends on processing conditions and the hardness of the workpiece material . Synthetic polycrystalline diamond compact (PDC) properties and applications close PCD tool , mainly used in non-ferrous metals , tungsten carbide , ceramics, non-metallic materials ( plastic , hard rubber, carbon rod , wood, cement products, etc. ) , composite materials such as cutting, gradual replacement carbide cutting tools . Because edge polishing pads  the diamond particles bonded to ask some residual metal and graphite , in which the bonding metal or showed coalescence vein -like distribution state will reduce tool wear and life.
In addition there is a metal residue solvent , solvent metal in direct contact with the diamond surface . Lower (PDC) oxidation resistance and tool heat resistance , the cutting tool is not stable enough. Thick Diamond Tool preparation process is complex, because of the low melting point metals and their alloys and diamond has a high interfacial energy between . Diamond is difficult to be generally low melting point  PCD grinding wheel solder alloy infiltration. Weldability poor , difficult to produce complex geometry tool , it can not be applied TDF welding tool in high-speed milling . Diamond- coated tools can be applied to high-speed machining , because in addition to diamond coated tools have excellent mechanical properties, diamond coating process can be prepared any complex shape cutters for high speed machining aerospace materials such as aluminum alloy and refractory processing of non- metallic material such as graphite electrodes.

Analysis method of diamond grinding wheel cutting wheel

Here today for me to introduce to you a brief analysis about the method of diamond grinding wheel cutting attention to detail the relevant information , I hope to help you in the future when masonry drill bits  you can buy some used, please follow the small series together to look at the contents of the following describes it !
A grinding wheel in the Leads chipping is easy : with a larger angle of the main cutting tool grinding wheel , cut entry provenance easy to chipping . To solve this problem , using a circular blade , changing the main angle , so that the Leads stable. The feed amount of 1 ~ 1.5mm case chipping phenomenon did not occur .
Second, the chip in powder form : Cutting wheel chips in powder form , in the form of tool wear is flank wear , mainly exposed diamond grinding wheel abrasive wear.
Third, the cutting force and the cutting temperature is low : diamond composite sheet has a high thermal conductivity  4 inch circular saw blade of tungsten carbide 1.5 to 9 times , the copper 2 to 6 times , the cutting zone temperature quickly spread . Thus, PDC cutter cutting resin bond or ceramic bonded grinding wheel temperature , many times lower than the cutting of metal . Fourth, with the traditional turning tools, diamond composite sheet in the process of turning almost no dust fly, also able to effectively reduce the noise , diamond wheels to further improve the working environment is conducive to worker health.
 Second, we have to consider is the size of choice, when you want to select coarse grained diamond wheels and vice versa , when faced with ultra- fine grinding wheel to use powder .

Ceramic coated abrasive grinding wheel of introduction

The abrasive wheel for ceramic coating and metal bonded grinding wheel for which the same advantages , and now small will take everyone to know, I hope we can bring convenience .
Ceramic grinding wheel for the  bandsaw blades superabrasive grains coating shows with metal bonded grinding wheels for the same benefits: helps control between vitrified abrasive and potentially harmful chemical reaction. Titanium is used in such typical material coating superabrasive grains , grains of titanium coating helps to reduce binding agent in adverse chemical reactions may occur . The metal bonded grinding wheel , the coating is to protect the diamond abrasive grains from the bonding agent system; while in vitrified grinding wheels , the coating is to protect the system from the binding agent of CBN grains .
Similarly, the abrasive coating also enhances the gripping force . In the glass ceramic material used in grinding is not ' wet ' , or not with the surface of the uncoated abrasive grains combined well , so the abrasive coating of titanium carbide coated abrasive grains  hole saw blades can improve the wettability and increase gripping force . After grinding wheel diamond pen can be used to stop trench repair , you can also use the wheel cutting blade repairs, but to use the wheel when the usual mundane as possible to add more value appearing grooves.
Hand sharpening wheel using alumina and silicon carbide are greatly wheel, aluminum alloy wheel for carbon steel class tools, such as high speed steel cutting tools and object class steel drill bit . Silicon carbide grinding wheel for carbide tools .

Three main diamond cutting tool materials

Three main diamond cutting tool materials --- PCD, CVD synthetic single crystal diamond thick and performance comparison results: PCD welding, mechanical grinding and the highest fracture toughness, wear resistance and edge quality centered, worst corrosion  cbn grinding wheels resistance; CVD thick best corrosion resistance, mechanical grinding resistance, edge quality, fracture toughness and abrasion resistance centered weldability worst; synthetic single crystal diamond cutting edge quality, anti- the best wear resistance and corrosion resistance, weldability, mechanical cutting resistance and fracture toughness of the worst. Currently, high-speed cutting diamond tool (2500 ~ 5000m / min) aluminum an ideal tool material, but in the high-speed cutting steel and steel alloys Shique wear faster, the wear mechanism was mainly due to carbon and iron with greater affinity effect, especially at high temperatures the diamond easily react with the iron, so it is not suitable for cutting steel and its alloys.
We have zero defect management  fibre discs concept, through consistently. All along, the pursuit of perfect quality, it is also constantly improve the service system, care for your every need, through a sales and service network throughout the country to provide you with professional services. Diamond tool material is divided into single-crystal diamond (there are two kinds of natural and man-made, natural single crystal diamond expensive part is single crystal synthetic diamond substitute), synthetic polycrystalline diamond (PCD) and synthetic polycrystalline diamond and carbide composite blade (PCD / CC) and CVD diamond.
Single crystal diamond
Single crystal diamond cutting tool must be  sds hammer drill bits used for large particles (mass greater than 0.1g, the best path length not less than 3mm), mainly used in surface roughness, geometry, high precision and dimensional accuracy requirements of precision and ultra precision machining applications fields.

The performance characteristics of diamond grinding wheel

1, with high cutting speed can be achieved with a high cutting speed can reach 100 100 - 300m / s 300m / s, and long service life.
2, using sintered diamond and boron nitride grinding wheel binder, binder for the multi-layer resin, metal and ceramic, using  diamond cup grinding wheel sintered diamond and boron nitride grinding wheel binder, binder for  the multi-layer resin, metal, and ceramics, the maximum diameter of up to the maximum diameter of up to 600mm600mm; electroplated diamond and CBN grinding wheel method, the maximum diameter; electroplated diamond and CBN grinding wheel method, the maximum diameter of up to 1300mm.
3, the wheel of the mechanical strength of the substrate can withstand the high speed grinding cutting forces. High-speed grinding, safe and grinding the substrate can withstand the high mechanical strength of the high cutting force during grinding. High-speed grinding, safety and reliability is extremely high.
4, the appearance of sharp, abrasive bump height, and that can accommodate a large number of long chips. Look sharp, abrasive bump height, and that can accommodate a large number of long chips.
5, high precision grinding, wear diamond cbn wheel  a long time, often without trimming, its accuracy can meet the requirements of precision plus high precision grinding, wear a long time, often without trimming, its accuracy can meet the requirements of precision machining needs, can be avoided taper workpiece machining process, excellent wear resistance characteristics can enable enterprises to work needs to avoid processing the workpiece taper, excellent wear resistance characteristics of the enterprise can greatly reduce production costs, without dressing, especially suitable for grinding often production lines, often without downtime to significant savings in production costs, often without finishing production line, especially suitable for grinding, often without downtime to trim disc, much progress abrasive grinding wheels  can produce efficiency, expand production. Trimming disc, you can largely progressive production efficiency, expand production.
6, a variety of binders with high wear resistance, small grinding wheel wear, home and use more metal bond grinding wheel multiple binding agent has a high resistance to abrasion, grinding wheel wear is extremely small, multi-use metal bond grinding wheel at home agent, a resin bond, ceramic bond, electroplating method combines, in addition to use of the German wheel, resin binder, ceramic bond, with electroplating.

Exchangeable-head tools new progress

It is acknowledged that drilling is the most widely used machining process, both in machining centers, CNC lathes, or in special drilling machine, drilling can be carried out. Processing cost per hole, drilled hole quality and integrity are selected drill and process the key factors to consider when. Often you can put some relevant processing operations such as reaming, chamfer, expanding drilling and boring integrated in a tool, in the drilling easily accomplish together.
Replaceable drill tip drill in the late 1990s came, when the drill bit carbide drill tip wear, can easily be replaced without having to drill cutter body from the holder and / or remove the spindle . Each of the steel blade suitable for the given size range crown of different diameters, the user no need to drill a hole the diameter of each purchase of a specific drill size, which can save costs. Typically, drill cutter body can be covered with pore size of about 1mm, many vendors drill tool tip diameter diamond hole saw  increments of 0.10mm.
In the drill bit replacement carbide steel cutter body concept to guide the drill tip interchangeable modular reaming head cutters and system development, and the same success, allowing users to benefit greatly.
Replaceable drill tip drills advantages in the following areas:
(A) save a lot of machining operations and tool management costs;
(2) reduce the use of carbide cutter body material;
(3) longer tool life and hole machining predictability;
(4) reduces drill inventory;
(5) eliminates the need for regrinding the drill bit, back up the tool and the desired fluidity;
(6) loaded knife significantly shorten the time, because it is in the holder on the machine and replace the drill tip, without presetting, compensation and the knife.
In order to correctly select the drill type, you will need to correctly answer questions about drilling dimensions, tolerances and surface finish requirements, as well as machining tasks or workshop  brick saw blades economy and other issues. For the processing of diameter less than 12.7mm, taking into account the machining precision and performance, solid carbide drill bit is still the recommended solution; diameter greater than 25mm for processing (especially roughing), recommend the use of indexable insert drills. The power tool on the processing of more than 25mm or even 51mm diameter holes, the use of indexable drills particularly effective.
In the range of 12.7-25.4mm diameter between drilling, you can change the drill tip drills have become a common choice because it can provide both precision drill hole on capacity and cost-effective, measurable overall competitive advantage. Carbide drill tip with the concrete cutting blade  workpiece material and processing requirements for optimizing drill tip shape design features, and usually without regrinding, so replace each drill tip is new, its processing performance and all the other new drill tip identical and re-grinding of solid carbide drills can not do this.

For special non-standard tool drilling

Currently, a variety of large composite fastener holes required in the processing more, the machine becomes more and more of a challenge and complexity of a large number of deep hole machining. These are two completely different application areas, but the common denominator is carbide tipped saw blade  processed in order to obtain satisfactory results and competitive processing performance, you must use the customization tool.
Non-standard tool is ideal for cutting the parts completely or partially cutting tool is based on the concept has been proven standards such as the existing blade clamping device, shank and interfaces; it might be equipped with multiple criteria a dedicated blade holder, can be used as two or more standard tool usage; also be a special cemented carbide material and / or channel made of indexable inserts, the use of maximum efficiency, and to provide a longer, more stable tool life. Associated with non-standard tool also includes incomplete standards, as an alternative to standard tool with a very small deviation characteristics.
When you need to process more complex parts, the part of the various features require specialized non-standard tool solutions. This also applies to the processing of simple parts, because the non-standard solutions can eliminate production bottlenecks encountered. The non-standard tools as the best solution for many occasions, including most  cutting blades of the machining range, materials and type of industry, which is the most representative of most of the non-standard tool modular tooling solutions. These solutions are usually based on criteria such as blades, knife cards, tool interfaces, flute, anti-vibration system or tool holder clamping device based on various combinations. With unique properties accounted for purely non-standard tool nearly a quarter of the total number of non-standard tools, and similar to the standard tool for non-standard tools accounted for three quarters.
Processing areas of processing and deep parts made of composite material is that the main processing of the use of non-standard tool places, such composite materials are mainly carbon fiber ring saw blades  reinforced plastic (CFRP), and by stacking the metal support of the composite material of the material.
Deep processing is widely used in a variety of industries, most notably in the energy industry and the aviation industry. Some deep parts are usually difficult to process or that seem difficult to begin processing, but the use of non-standard custom tooling solutions can, through an efficient and secure way to easily solve this problem.