Arix core drill bit

Drill is used for drilling in solid material out through holes or blind holes, and is able to existing hole reaming tool. Commonly used mainly twist drill, flat drill, center drill, deep hole grass cutting tct saw blade nd core drill. Reamer and countersink drill, although not in the physical material drilling, but the habit will also drill them into a class. There are two kind of drill in drilling in concrete, etc., can ease the drilling status of a sudden change in the situation, so that electroplated core drill bit operations stable, even when a large grain chips, drilling efficiency is not caused by lower drill. A drill bit arranged at the front end comprising a plurality of cutting edge portions, and is provided at the base end side of the cutting blade portion and formed with a shaft-shaped shank of non woven flap disc to the base end portion.

Non-core drill bit

Solid carbide drills suitable for use in advanced machining center. This diamond glass drill bit fine particulate materials using carbide for long life, also conducted a TiAlN coating, specially designed blade geometry type of the drill with self-centering feature, when drilling most workpiece materials have good chip control and chip evacuation. Self-centering function of the drill and manufacturing precision strict quality control to ensure that the hole segmented dry core drill bit , electroplated core drill bit without further follow-up after finishing. Installation carbide indexable insert drills machinable pore size range is very wide, processing depth range of 2D ~ 5D (D for diameter) can be used lathes and other rotating machines.

Segmented dry core drill bit

A core drilling bit used. GUSHI drill bit for metal is made of various metals and metal drill. On a cylindrical diamond cutting tools body due inlay tungsten carbide cutting welded with the name. Its shape and the number of drill inserts welded carbide cutting tools, the arrangement, inserts welded different angles, called the end of the blade, the blade within the blade and go out to ensure that there is a gap in water and drain through powder. The upper part of the body is threaded connection arix core drill bit core pipe, drill a sink open side of the body, the surface of the bottom lip also opened outlets. Sink and outlet are guaranteed circulation of fluid, reaching exclusion of rock dust and cool the drill bit role. In order to increase the gap in the inner and outer sidewalls of the hard alloy welded drill when drilling clay and shale formations ribs, said ribs drill bit. In hard abrasive formations can be used with high-autogenous grinding tungsten carbide drill bits. Generally hard alloy drill for drilling rock drillability grade Ⅱ Ⅶ a formation; tungsten carbide electroplated core drill bit can drill a Ⅷ level Ⅵ rock.

Each drill bit for metal hole alloy processing costs

Each hole machining productivity or cost is the most important factor in drilling impact. To improve productivity, the carbide drill bits manufacturers are working on a variety of operations can be integrated step processing method, and developing high feed, high speed processing of the drilling tool. The newly developed replaceable carbide drill crown has excellent machining economy. Carbide crown replacement easy and high repeatability, processing workshops available drill body with a plurality of teeth crowns, to the processing of different pore sizes of holes. This modular drilling system can reduce 12 ~ 20mm diameter drill bit manufacturing costs and administrative expenses, while also saving the cost of backup tool when welding or solid carbide drills were reground needed. When considering the cost of processing each hole, should also be taken into account the total life of the core drill bit. In general, a solid carbide drill regrinding only 7 to 10 times, a welded carbide drill regrinding only 3 to 4 times, and replaceable carbide drill crown in the processing of steel material , its steel hammer drill bits body can be replaced at least 20 to 30 times the tooth crown.

Alloy drill bit for metal chip and coolant

Chip is drill bits for metal for metaling in question can not be ignored. In fact, the drill bit for metaling encountered the most problems is poor chip (especially when machining low carbon steel workpiece), and regardless of the drill bit for metal were unable to avoid this problem. Processing plant are often used way of external coolant injection auxiliary chip, but this method only if the workpiece hole diameter and decrease the cutting depth is less than the case of the parameter is valid. In addition, you must use the hss drill bit for metal diameter to match the right kind of coolant flow and pressure. For the spindle cooling system is not installed in the machine, you should use a coolant pipe. The deeper the hole to be machined, the more difficult chip removal, the coolant pressure greater need, therefore be guaranteed bit manufacturer's recommended minimum coolant flow, such as drill bit lack of coolant flow, it is necessary to reduce the machining feedrate.

Features and choice of solid carbide drills

Solid carbide drill bits is a complete carbide rods, use grinder processing. High strength, high hardness properties, fast cutting speed, wear resistance, red hardness and good, suitable for processing a variety of materials components. By cooling structure can be divided into non-cooling holes and there are two types of cooling holes. 1. Characteristics and uses (1) rigid, high strength, easy access to high precision core drill bit. (2) the material can be suitable for more complex drilling, selects a higher cutting speed. (3) effective to reduce chipping, has good wear resistance. (4) multi-layer geometry cutting tip edge, improving chip performance, maintain a smaller cutting resistance. (5) In addition to commonly used rectangular handle, the wide range of handles, suitable for a variety of drills, drilling machines equipped with. (6) compared with indexable insert drills, solid carbide hammer drill bits grinding times can be 7-10 times.

Processing stability of drill bits

In addition to considering drill biting accuracy requirements, the need to consider the stability of the machine tool when selecting Non-core drill bit. Machine stability is essential for safe life and precision drill bit bit, and therefore need to carefully examine the machine spindle, fixture and accessory working condition. Also, consider the stability of the drill bit itself. Solid carbide drill bits best rigidity and therefore can achieve high precision. The poor structural stability carbide indexable insert masonry drill bit, and prone to deflection. Welded carbide drill bits and replaceable carbide drill bit crown is composed by two symmetrical self-centering cutting edge geometry of edge, which has a high stability of the cutting edge of design when it does not need to cut into the workpiece reduce the feed rate, and only when the drill bit bit inclined mounting surface and cut into a certain inclination exception, this time recommended drill bit, drill bit when the feed rate is reduced from 30% to 50%. Because these drill bit steel sds plus hammer drill bits body can produce small deformation, and therefore well suited for lathe; but due to the large brittle solid carbide drill bits, when used in lathe easier to break, especially when the poor condition of the drill bit centering when even more so.

Selection of carbide drill bit considerations

use carbide drill, the first need to consider the size of precision drilling. In general, the smaller the aperture to be processed, its tolerance is smaller. Therefore, manufacturers usually arix core drill bit holes to be processed according to the nominal diameter of the drill bit for classification. In the above four types of carbide drill, solid carbide drill highest precision (φ10mm solid carbide drills tolerance for 0 ~ 0.03mm), so it is the best choice for high-precision machining holes; welded carbide drill or replaceable carbide drill crown tolerance range is 0 ~ 0.07mm, generally more suitable for hole machining accuracy requirements; installation carbide indexable insert carbide drill bits are more suitable for heavy roughing, Although its processing cost is typically lower than the other several bits, but its precision is relatively low, the tolerance range is 0 ~ 0.3mm (depending on the bit aspect ratio), it is generally used for hole machining accuracy is not required , or require subsequent finishing hole.

The classification of carbide drill bit

Carbide indexable insert drills: Install carbide drill bits indexable insert drills processing aperture range is very wide, processing depth range of 2D ~ 5D (D for diameter) can be used lathes and other rotating machines. Welded carbide drill: welded carbide steel drill bit is firmly welded body made of a hard metal crown. This self-centering drill blade geometry type, small cutting force, for most workpiece materials can achieve good chip control, machined hole surface finish, dimensional accuracy and positioning accuracy are high, do not have to follow-up fine processing. The electroplated core drill bit uses internal cooling method can be used for machining centers, CNC lathes or other high rigidity, high speed machine. Replaceable carbide drill crowns: the crown replaceable carbide drill bit in recent years to develop a new generation of drilling tools. It consists of solid carbide steel drill body and replaceable crown combination, compared with welded carbide drill, the machining accuracy comparable, but the crown can be replaced, thus reducing processing costs, improve drilling productivity. This drill bit hole size to get an accurate incremental and self-centering function, so high precision aperture.

The basic types of carbide drill

    Carbide drill bit into four basic types: solid carbide drills, carbide indexable insert drills, welding and replaceable carbide carbide drill bit crown. Solid carbide drills: Solid carbide core drilling bits suitable for use in advanced machining center. This drill carbide materials manufactured using fine particles, in order to extend the service life, also conducted coating, blade geometry type specially designed drill bit with a self-centering function, good chips when drilling most workpiece materials control and chip evacuation. Self-centering function of the drill and manufacturing precision strict quality control to ensure that the hole drilling, carbide drill bits without further follow-up after finishing.

The application of drill bits

Product performance continue to improve over the past few years, the quality and type of the cutting teeth have undergone tremendous changes. If the 1980s and today's tooth, then the teeth were compared, the difference is quite large. Due to changes in the mixing process and the manufacturing process, the quality of the performance of today's cutting teeth is much better, so that the anti-erosion and impact diamond core drill bit capabilities are greatly improved.

Engineers also tungsten carbide interface between the substrate and the synthetic diamond is optimized to improve the toughness of the cutting teeth. Layered diamond workmanship innovation has also been used to improve the abrasion resistance and thermal stability.

In addition to the development of materials and manufacturing processes, product design techniques in the tooth and the tooth cloth has also achieved a major breakthrough. Products can be used in areas not previously applied, such as harder, more abrasive formations and varied. This extended to the new field, to balance between the drill bits and the roller cone diamond core drill machine diamond (fixed cutter) had a great impact occurs.

Initially, the drill bits can only be used for soft shale formations, because it will damage the drill bits hard mezzanine. However, due to the emergence of new technologies and changes in the structure of the drill bits can be used in hard rock formations have been Non-core drill bit hard and long segments of the mezzanine. drill bits is increasingly chosen by the people, especially with the cutter quality continues to improve, this situation more and more prominent.

carbide drill bits safety rules

⒈ in operation, please wear good clothes, safety glasses, hard hats, etc; please do not wear loose clothes and yarn gloves, to avoid danger.

⒉ to prevent iron hand scratched, use hooks to remove iron when carbide sds plus hammer drill bits .

⒊ Before using, check if there are injuries carbide drill bits, if injuries do not use.

⒋ If the carbide sds drill bit is stuck, turn off the motor immediately.

⒌ replacement, when removing the carbide drill bits, make sure that the device power is off.

⒍ when rotating the carbide drill bits, do not touch, to avoid danger.

⒎ carbide drill bits blade portion is very hard, but also very brittle, please be careful to protect, if the carbide drill bits chipping will affect carbide drill bits results, it can cause the bit to break.

Twist drill bits

Twist is the most widely-processing tool. Typically diameter range of 0.25 to 80 mm. It mainly consists of
Bit working portion and the shank portion. Work section has two spiral grooves, the shape of twist, hence the name. In order to reduce the guide portion of the hole when electroplated core drill bit intramural friction, twist since the direction of the drill bits tip to gradually reduce the diameter of the shank inverted cone. Twist the helix angle of the cutting edge mainly affects the size of the front corner, edge flap strength and chip performance, usually 25 ° ~ 32 °. Spiral groove available milling, grinding, hot rolling or hot extrusion methods such as processing, after the cutting portion is formed by the front end of the drill bits sharpening. Standard twist angle of the cutting portion 118, the chisel edge angle is 40 ° ~ 60 °, the clearance angle of 8 ° ~ 20 °. For structural reasons, the rake angle at the outer edge of the large decreases toward the middle, chisel at a negative rake angle (up to about -55 °), from the squeezing action when sds max drill bits. In order to improve the cutting twist, can be processed in accordance with the nature of the material will be ground into various shapes cutting part repair (such as drill bits group). Shank twist drill bits with and handle the form of two straight shank taper, when caught in the drill bits chuck machining the former, the latter is inserted in the machine spindle or tailstock taper in. General manufacturing high-speed steel twist. Inserts welded carbide blade or crown of twist suitable for machining cast iron, hardened steel and non-metallic materials, solid carbide twist core drill bit for machining small parts and printed circuit boards and other instruments.

Matters drill bits during use should be noted

Always check the concentricity of the clamping force of the spindle and collet and collet chuck, concentricity good cause broken drill bits small diameter drill bitsing and pore size, etc., the clamping force is not good cause actual speed and set speed is not met, the slip between the chuck and glass drill bit.

Shank drill bits set at the head of the clamping length collet shank diameter of 4 to 5 times in order to clamp securely.

Always check the spindle presser foot. Presser foot contact surfaces must be level and the vertical axis can not shake off the drill bits to prevent sds plus hammer drill bits produced and partial holes.

drill bitsing is better suction, vacuum wind can reduce drill bits temperature, while away the dust reducing friction heat.

Laminated substrate including the upper and lower plate to be positioned firmly in the work bench drill bitsing a hole in a trough positioning systems, flat. The need to prevent the use of adhesive tape on the diamond core drill bit so that the tape adheres drill bits cuttings, causing difficulties and chip off the diamond.

The use of carbide drill bits

⒈ carbide drill bits for metal should be installed in a special packing boxes, to avoid vibration collide.

2.When use, from packing boxes should immediately remove the carbide drill bits spindle collet mounted to replace the carbide drill bits in advance or automatic tool library. Then run back into the packing box.

⒊ drill diameter measurement tools to use microscopes and other non-contact measurement equipment, to avoid the cutting edge in contact with the mechanical gauges were bruised.

⒋ some carbide Non-core drill bit using the positioning ring some retaining ring is not used, such as the use of its fixed ring during installation
Depth positioning must be accurate, as it does not use the positioning ring attached to the drill spindle elongation to adjust the consistency, multi-spindle drilling machine to pay attention to this point, to make the drilling depth of each spindle to be consistent. If it is not possible to make the carbide drill bits to masonry drill bit the table can not be drilled or cause board scrapped.

Drill bits material

Carbide drill bits for metal are generally used as epoxy glass cloth complex copper plate tool wear particularly fast. The so-called hard close
Gold is tungsten carbide powder as matrix, cobalt powder as a binder pressurized, sintering. Usually contain 94% tungsten carbide, 6% cobalt. Due to its high hardness, very wearable, there is a certain strength, suitable for high-speed cutting. But poor toughness, very brittle, cemented carbide in order to improve the performance of some use in the carbonized matrix chemical vapor deposition of a 5 to 7 microns special hard titanium carbide (TIC) or titanium nitride (TIN), it having a higher hardness. Some of ion implantation technology, titanium, nitrogen, and carbon into a certain depth of its base, not only to improve the hardness and strength but also in the core drill bits resharpening inject these ingredients can move into. There are physical methods used to generate a layer of diamond film on top of the drill bits, which greatly improves the hardness and wear resistance of the drill bits. The hardness and strength of cemented carbide, and tungsten carbide and cobalt only ratio, but also with the relevant particles. Carbide drill bits ultrafine particles having an average grain size of the tungsten carbide phase in less than 1 micron. This core drills bit is not only high hardness and compressive and flexural strength have increased. In order to save costs many drill bits shank welded structure, originally as a whole are carbide drill bits, drill bits the rear handle with a stainless steel, costs declined significantly due to the use of different materials, but its dynamic concentricity less than solid carbide drill bits.

GUSHI drill bit for metal installation and removal

For a variety of installation and removal of the GUSHI drill bit for metal rig. Easy and reliable installation and removal.
  ⒈ GUSHI drill bits for metal installation

Slowly lifting GUSHI drill bit for metal cassette, the cassette will GUSHI drill bit for metal four legs into the four holes corresponding turntable rig, according to the choice of the appropriate size GUSHI drill bit for metal core GUSHI drill bit for metal box, lifting the GUSHI drill bit for metal into the GUSHI drill bit for metal core box inside the box and then will be notch and GUSHI hammer drill bits core GUSHI drill bit for metal dimples box corresponding installation will GUSHI drill bit for metal into the box GUSHI drill bit for metal, GUSHI drill bit for metal core that card on the turntable. Followed by spin coupling nut on the GUSHI drill bit for metal bit.
  ⒉ GUSHI drill bit for metal demolition

Lifting GUSHI drill bit for metal (with GUSHI drill bit for metal), the GUSHI drill bit for metal bit cassette as ① requires connection with the turntable, lifting the GUSHI drill bit for metal bit slow groove corresponding convex tip GUSHI drill bit for metal core box, and the GUSHI drill bit for metal bit stuck in the box, in order to recede GUSHI diamond glass drill bit , GUSHI drill bit for metal.

The work principle of carbide drill bits

carbide drill bits is used for carbide drill bitsing in solid material out through holes or blind holes, and is able to existing hole reaming tool. Commonly used mainly twist carbide drill bits, flat carbide drill bits, center carbide drill bits, deep hole carbide drill bitsing and core carbide drill bits. Reamer and countersink carbide drill bits for metal, although not in the physical material carbide drill bitsing, but the habit will also carbide drill bits them into a class.
When the digging operation, the carbide drill bits bit rotating about a vertical axis, while for axial movement. The soil is cut in torque and axial force carbide drill bits role was destroyed in the extrusion and the centrifugal force of the blade work and pounding broken loose, flowing pressure to form a soil pit wall, while the elevator to the surface of the page. When the earth moves to free Pit stop the flow at the time, due to the centrifugal force pulverizer was thrown around the pit, to complete the digging process.
A carbide drill bits, comprising a shank ⑴, Arbor has a tip, the tip has two cutting insert in a main plane (C-C) on the (5,5 '), the cutting insert (5,5') having a short center on a second common plane (E-E) in the orientation of the cutting edges. Said blade forming a cutting edge for the center point into the workpiece, and thereby the carbide sds drill bit bit alignment. On Arbor, located two flutes (6,6 '), the flute (6,6') extending from the tip end in the end. Any length along the surface of the holder, the flute in the tube plane are located diametrically opposite positions to each other, the tube flat blade with two edges together with duct tape on both sides of the plane (F-F) to 90 ° extension, said shank having maximum rigidity in the plane. A rigid bottom of the main direction of the center of the cutting edge of the second plane (E-E) and the orientation of the blade with a flat or arbor (F-F) of approximately 90 ° angle.