TCT annular cutter with Weldon shank(Version P) DNTP-4

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Product Description:


D.O.C.  50mm
31.75 weldon shank for clamping strength and finish . Suitable foe large cutter above Φ61mm
Selected special-purpose carbide tips with multi-cut geometry for ply-cutting and lower friction . Reduced damage of tip and improved performance of ships removal
Applicable to hole cutting and process of annular groove on various magneric drills and press , like Alfra , Hougen , Jancy , Euroboor , BDS , Ruko


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Q:What drill does 42CrMo use to drill better?
Carbon structural steel 42CrMo, with ordinary high-speed steel drill bits can be larger, with 60 holes, first with a drill hole, then the reamer drill bottom hole expanding.
Q:What is the difference between cobalt titanium alloy drill
A drill is the first part of a drill or hand drill.
Q:How big are the 8 bits that have worked up?
A drill bit (Drills) is a tool used to drill through holes or blind holes in solid material and to expand existing holes. The commonly used drills are mainly twist drills, flat drills, center drills, deep hole drills and casing drills. Reaming drill and countersink drill is not in solid material drilling, but it is also customary to put them in a bit.
Q:What are the differences between a twist drill and a construction drill? Where are they used?
A twist drill is usually a metal drill. Construction drilling is the impact of drilling, more for concrete, masonry and other drilling.
Q:Why not hammer drill iron? yes or no?
Motor protection device: comprehensive in use will inevitably have hard granular access to a machine (especially on the machine to work on drilling, such as drilling on the top wall), if there is no certain motor protection, rotating at high speed can easily be hard break or scratch enameled wire, eventually lead to the motor failure.5, positive function: can make use of a wider range of electric hammer drill, the form is mainly realized through switch or adjust the brush position, usually big tools will be used to adjust the brush position (rotating brush) to achieve the benefits of doing so is easy to operate, effectively inhibit the spark to protect motor commutator, prolong the use life6, hammer drill double function: both the impact hammer, electric drill and penetration.
Q:How about the speed of the drill bit and the feed of the cutter in the machining center?
1, if I first drill with D13 bit (S600, F80, Q5), and the rest of all milling cutter hole2, casting and steel parts almost turn, the speed can be faster. After 28 of the hole points, use 28 bit S300, F50, Q3. directly3, 35r6 direct spiral down, layer below 0.5-0.8, S1500, F2000-3000
Q:Want to buy a hammer, with the decoration of the house, how much more appropriate aperture?
Hammer is a kind of electric drill, mainly used in the concrete slab. Brick and stone on the hole. Hammer is the use of compressed gas piston, impact drill bit, need not make much effort, it can open 6--100mm in concrete, brick, stone and other hard materials on the hole hammer in the above-mentioned materials on the opening of high efficiency, but it is not suitable for open hole in the metal. But some multifunctional electric hammer, adjusted to the appropriate position with appropriate drill can replace the ordinary electric drill, electric use.
Q:Cobalt containing special stainless steel drill bit, 4mm angle, do not move?
No matter what drill, the head must be sharpened! The small drill can be struck because the front edge is well sharpened! And 8.5 of the drill bit can not drill through, because the drilling side of the two cutting edges did not grind out (front angle is lower than the back angle, resulting in non cutting! To grind to the rear corner, lower than the front corner!!!!!!!!. When the drill bit blade grinding, drilling 4mm angle, is very fast, also don't add coolant! (head color change, drill when there is a cry, two sides do not chip out, all the drill bit did not wear well), grinding drill bit is a learning, learning is not difficult. Learn to grind the drill bit and drill around with the 10mm to see the edges.
Q:How do you drill a sharpening bit?
By the back edge grinding behind. This is the slow grinding of the entire flank from the edge of the bit. It is easy to dissipate heat and grind. Based on the formula one or two to consolidate stability, this bit can be gentlyContact grinding wheel, a small amount of grinding, grinding, to observe the uniformity of the spark, to adjust the size of the pressure, and pay attention to the cooling of the drill. When the cooling start again after grinding, to set the position of the one or two formula,This is often difficult to master in the beginning, often involuntarily change the correctness of its position.Formula four: "the next swing tail don't tilt." This action is also very important during the sharpening of the drill, and the students often change the "up and down" into "up and down" in the process of grinding so that the other main blade of the drill is destroyed. withThe tail of the drill can not be raised above the horizontal center line of the grinding wheel, otherwise it will cause the edge to be dull and can not be cut.
Q:1.5 of the stainless steel plate to drill 1.2 holes, the drill has broken a lot of roots, what kind of material with a bit better? How much speed, how much feed?
When drilling a stainless steel material, it is better to add some vinegar to the drill so that it will be easy to drill. Stainless steel drilling, the speed can not be high, high, easy to drill bit. 1.2mm hole, the speed hit 1000 rpm almost. In addition, the drilling of stainless steel, it is very hard to drill, the drill is not fast, and timely grinding, do not force to drill down, it will easily break the drill.

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