TCT annular cutter with universal shank DNTC-3

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D.O.C.  35mm

Universal shank for various magentic drills
Select special-purpose carbide tips with multi-cut geometry for ply-cutting and lower friction damage of tips and improved performance of ships removal
Applicable to hole cutting and process of annular groove on various magnetic drills and press


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Q:Can HSS drill bits be drilled into stainless steel?
Yes, but it's best to have cobalt high-speed steel bit, but it's better to use a carbide drill. High efficiency and cost performance. We can make stainless steel special drill.
Q:What are the main points of drill grinding?
Grind back from the edge of the blade. When the blade is in contact with the grinding wheel, it should be drawn back from the main cutting edge, that is, contact the grinding wheel from the edge of the drill bit and then slowly grind down the whole flank. Gently contact wheel bit penetration, advanced for less grinding, and observe the uniformity of discharge, timely adjustment of the size of the pressure on the hand, but also pay attention to the drill bit cooling, can not be allowed to wear too much, causing the edge to edge discoloration, annealing. When the blade temperature is high, the drill bit should be cooled in time.
Q:How are the drills classified?
As a result of structural reasons, the front angle is large at the outer edge and gradually decreases to the middle. The horizontal blade is a negative front angle (up to about 55 degrees), and plays a role of extrusion when drilling. In order to improve the cutting performance of the twist drill, the cutting parts can be cut into various shapes according to the nature of the material to be processed, such as group drills. Handle form twist drills with parallel shanks and taper shank two, when processing the former clamp the drill chuck, which is inserted in the machine tool spindle or the tailstock taper hole. Made of high speed steel for general twist drills. Inlaid with hard alloy blade or crown drill for machining cast iron, hardened steel and non-metallic materials, solid carbide twist drill used for machining small instrument parts and printed circuit board etc..
Q:Which material, gb1436 and 6542, has a good drill?
6542 refers to the content of various elements in this material. For example, 6542 is W (tungsten) content of about 6%, Mo content of 5%, Cr content of about 4%, V content of about 2%.
Q:How do we calculate the length of a drill for a bored pile drill?
There are two main types of drilling rigs: rotary drilling machine and impact drilling machine. The bit of rotary drill is divided into three kinds of scraper drill: suitable for quicksand and silt layer. Only the diameter and weight limit, no length limit cone drill: suitable for soft stone and hard soil. There is no length limited hob drill: suitable for hard rock layers. There are weight limit and hob arrangement, hardness requirements above, there is no drill length requirements. Impact drill: it is to use the weight of the drill to squeeze the soil into the hole, and the hole of the rock is also to use the bit itself to destroy the rock structure surface into holes. Only the weight on bit (according to the requirements of classification of rock hardness determine bit weight, diameter of 2-2.5 meters in the drill hole, the weight of at least 10 tons; 1.5-2 meters, bit weight of about 5 tons, 1.5 meters below 3 tons. For impact drilling, the length of the drill has a certain requirement, usually 1.8-2.5 meters high. Because the longer the drill bit, the stronger the impact drilling guidance function, the smaller the possibility of partial hole, hammer and hammer, the higher the standard of drilling. There are no rules and regulations, and you can succeed by experience.
Q:What kind of drill is used on the stainless steel countertop?
Stainless steel cabinet table drilling, stainless steel table need to prepare two kinds of drilling tools, a cutting stainless steel, the other is a layer of wood cutting stainless steel, stainless steel and wood cutting are used in cutting machine, electric drill is indispensable, hollow wood also used 3 cm diameter hole.
Q:By drilling with a bit, why is the hole drilled straight 2 larger than the diameter of the drill?
Equipment: drill precision, bearing wear and drill card precision drill conical burr speed selectionThe lateral and lateral deflection of the bit and the size of the back angleDrilling can only be used for fastening, for mating, for boring, for reaming
Q:How much is an alloy drill bit?
Depends on what size and brand and technical requirements you need. I have no specific answer to that. You want a specific request for me
Q:How big is the drill bit for the 7mm hole?
If the big point is OK, use 6.5 bit to drill a hole, and then use 7 bit reaming, we can get 7.0-7.1 hole, directly use 7 bit drilling, the hole error is the biggest. Hope to be helpful to you, please adopt.
Q:M3 threaded hole. The bottom should choose large diameter drill bit
What do you not know about screw diameter reduction? M3 the pitch is 0.5, that is, 3-0.5=2.5.. If it is a piece, it can be larger. Choose 2.55 to 2.6 of the drill bit. All other materials are 2.5.

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