TCT hole saw(Thick metal) HTTS-B D.O.C. 1

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HTTS-B

D.O.C. 1”

◎ Made of high quality solide carbide tips , reduce the damage of tips , increase the endurance

◎ Assembled with high quality center drill and spring

◎ Maxium cutting depth of 15mm on solid plate with pistol drill , and 25mm on solid plate with magnetic drills

◎ Shank diameter 10mm for hole saw Φ16mm~34mm , and Shank diameter 13mm for hole saw Φ35mm~100mm.

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Q: How big expansion screw does the 6mm bit have?: 6mm drills are generally equipped with 5mm expansion screws (the smallest specification).The relationship between the drill bit and the expansion screw is the drill diameter = the expansion screw diameter +2mm. For example, the expansion screw of 6mm shall be opened with 8mm drill bit.

Q: How to recognize the quality of twist drills?: In addition, there are also listening to the sound, knocking glass, using a grinding machine to play sparks, see color, etc.. These need experience, like picking watermelon, each has its own coup, different varieties, methods are also quite different. Usually, the more crisp we are, the more glass we have, the slightest spark, and the more red the spark, the better the bit material.

Q: What kind of drill bits are used in glass drilling?: Drill glass has special drill bits, steel sand drills.Use a twist drill to drill glass. The glass is easily broken and cracked. If you must use a twist shape, buy a milling cutter. It is not easy to use a milling cutter to drill holes in glass.If you buy high-speed steel twist drill is really qualified high-speed steel material, you can drill through the glass, if high-speed steel is not possible, you may consider carbide steel.Small steel sand drill bit will be about 3 yuan, cheaper, it is better to buy this thing.Of course, the diamond is also OK, just so expensive.

Q: Tap 10 taps, what size drills do we use?: In general, with nominal diameter equal to the diameter of the bottom hole pitch reduction. 10-1.5=8.5, that's 8.5. However, if the quarterly demand is high, follow the formula below:D1=d-5H/8 H=0.866p:D1-- drilling diameterD - thread diameterH - theoretical height of threaded teethP - pitch

Q: Tap is M14-H2, drill with big bit: The tap is M14-H2 and can be punched with a drill with a diameter of 12.The threaded hole diameter can be determined by the formula:The nominal diameter of the screw - thread pitch = threaded hole diameter

Q: Bit grinding, hair and technical requirements: There is now a knife grinding machine YN-01A+ drill grinding machine grinding twist drill on the market, SG fast drilling, DG long short blade edge deep hole drilling, in the processing of 3D within the hole, the ordinary twist drill into fast drilling, without positioning, direct drilling, hole position accuracy and the efficiency on the use of ultra fast; DG to the mill, if it is less than 10D or above according to the processing of materials and machine tools and other site by cutting and grinding method when less than 3D above 5D; worn by YN-01A+ zzm-a drill bit to meet the basic situation the essence of drill bit efficiency 2-3 times, the service life of the drill bit can provide 3-5 times; this machine operation is simple and fast, without experience in technology, one minute can grind a bit.

Q: What drills should be used to drill holes with diameter 5mm and depth 65mm? Urgent! Thank you!: You don't know what material you need to drill, what is the material, or how hard it is,Ordinary material on the ordinary line, and if the material hardness, then you have to use M35 cobalt or alloy drill.

Q: By drilling with a bit, why is the hole drilled straight 2 larger than the diameter of the drill?: The drilling depth - to determine the guiding edge and drilling parameters of the drill: shallow ordinary drill, a set of parameters, if more than 10 long deep hole diameter ratio, cooling the drill bit will choose to guide blade, and soon after the first slow step feed, with 2 sets of parameters, the other through hole, then reduce the parameters in the proposal through;

Q: What is a two center drill? What's the function?: The drill has two centers in the axial direction, generally used for reaming and used in salt gypsum layers, mainly to make drilling tools easy to pass through.

Q: Why do you always burn drills?: Do not add cutting fluid is difficult to control, do not burn, there is no way to use compressed air blowing it will be better, and drill down when the knife properly, will be better.

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