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.