Hello everyone, today to introduce the drill bit is recognized today introduced several of our more common in plants or DIY drill will be used when comparing where we want to understand how to get to the entry of these types of drills and what size it and its purpose is to see what we have so much to know how to go with it to distinguish it how do we keep looking Hello first, let's look at what is there is another drill drill drill the end of a name is called both names it may be a long way to substantially form a cylindrical trailing end there is no cylindrical spiral body is mostly spiral helical side where there will be a similar knife is beveled side it can do it the way to do the cutting operation there is no drilling is used to place the coil holding it like a hand-held electric drill or a lathe, milling it may be fixed after the completion of the fixed, high-speed rotation can be done to make the drill after the movement of the front head side of the hole will show 120 degrees and sometimes the front if drilling drilled a long knife in front of it is likely to take it like a grinder may collapse after collapse, the front end of a grinding mill finish what you can If you continue to use the drill bit so accidentally cut off from this fact, here it is ground into such a head-type unless it can continue to use the spiral here that are not possible or is no way to use this spiral short drilling depth deeper when there is no way to drill this way nor can generally broken drill bit careless when it basically was able to grind to use the spiral here is of any use primarily in the first two places when the discharge borehole with iron filings will come out from the two second grooves is to drill a hole may be relatively large relatively high temperature is required after cutting fluid cutting fluid plus added to the list on the cutting fluid from the upper end where could this be left to make a hole inside the cooling effect of the two main ways to assist it here let us look into wait to introduce other types of drill and its purpose is to introduce what the next size drill bit size is very many small, from 1mm or 0.X have big big to have a few XXmm decimal point here, especially some of these drills all has its very diverse like 10.1, 10.2, 4.2, 4.3 or so on this As long as you have the kind of demand basically have all these drills so the market can be bought to drill its size species is very, very much it is generally a long way in the form of general here in this place if it is the size so here lettering can be seen from the end of this place is its size roughly how much will have marked another larger point is that I like here is the draw here it is generally more large 20mm diameter drill the end of it here become like this little drill is usually like this if it is relatively large, it will reduce the principal here is of the form where its function is drilling It is roughly the size of this resolution because sometimes we have is to be combined with the lock attached to tapping screws or with different pore size it will drill to aid it here so that we go to find out next to introduce La flat head flat head drill here drill its use is sometimes boring when there is no drilling through the drill may be a depth that depth might want to place it at the front of the plane will be used this time to drill sometimes flat head flat head drill there can sometimes be replaced with milling cutter is also a long way in the form of the difference lies in the details of where it may be a bit different here, something like the socket screw socket screw lock attached when sometimes it is required sink holes this time it will go in with a flat head drilling screws to come and assist it here if you can not understand the screws to recognize introductory chapter to find out what is generally socket screw is such a flat form more often used in the drilling hole is no drilling through the side will use this form to let us look at the next to introduce the reamer reamer front end is such that it is sort of like a flat head drill just described earlier, have set aside a front end where its tiny head where it is will have to drill a hole expansion effect when the center will first drill a hole to drill down when it will scrape scrape out from the side of the side of a big hole because the general when drilling from the relatively small size of the aperture slowly began to drill big suppose you want to drill a 20mm diameter hole to start might be to use a 3mm hole drilled before drilling may then replaced 5,7,9,10,12 then slowly increase to 20mm will generally do so less likely to start drilling action is generally used to drill 20mm that would be more difficult to drill in drilling time and drill out the holes will be relatively inaccurate so when drilling usually caused by the small size slowly increased to such a large size reamer form of this is that it might be such a demand because sometimes when replacing the drill bit so it will take longer derived out this form out so assumptions this is 10mm 10mm to use this drill it out directly rather than two to three drill to drill out so use this form we can save some steps in this form it looks a bit like a drill bit used in carpentry, but also a long way the form here so that we look into La next to introduce a processing center drill center drill in almost every time it is used, it has two two center drill intention is that if one end of it out there the other end of the knife collapse can be used to clamp the coil, this is not the place where it will taper tapering dimensions here we see that it is relatively small in center drill typically used where if the workpiece is a pipe such as iron, iron , such as iron began to draw a good line or a good position after positioning will use the center drill, drill a hole to be drilled this hole is to assist in the future to replace a larger drill bit when the auxiliary position so it Drill holes out here like that would be more accurate to use a lathe tailstock center will also very often used to drill entry if you know where there is a detailed explanation for lathes and milling machines do not quite understand you can go to the lathe understanding Beginners articles here will have a detailed explanation lathes, milling machines is very often used to center the drill main purpose is to locate used here to refer Hello everyone next to introduce a step drill step drill is derived out here just have to mention to drilling in a variety of sizes need to be replaced when the drill bit like if you want to drill large holes from time to slowly replace the minimum size of the aperture you want to replace this step drill is easy to use drill here we do not have to be replaced often hexagonal shank to do is we'll see where it finished after holding it stepped forefront of this size is the smallest and then growing substantially more side here will be engraved size of the more common two 4,6,8,10,12 number jumped a form like the size of it to make such a step-out drill so when it will start drilling, assuming it is here in 4mm drill down becomes 6, 8,10,12 so this is very convenient and we'll save a lot of time in the borehole, it's time to replace and storage space with this step drill bit it is equal to several teams combined savings out so it is very convenient some of it will make a spiral to give you a look like some form of stepped drill bit will make this spiraling a bit like a drill mean the same thing here so that we refer to it also has a step drill Some specifications have some more with less is the same purpose is to make us easy to do drilling operation without replacement of the drill so many times here, so that we refer to summarize Hello last bit of knowledge about the species here when the plant is more common in the drill bit and we use lathes, milling machines will be introduced to the use of the more common is this some kind of drill is not to introduce such a drill bit or carpentry cement used and sometimes drill larger holes when there will be something called a round hole saw drill bit it is in the form here also are not introduced to the band mainly due to the entry so we introduce some of the more basic common with everyone to understand that if you have special needs again to understand the other so you will learn more helpful and sometimes applied to reaming knife is such a form and some of it is a drill you can adjust the size may be some special size can adjust it to have the kind of complex drill bit to let everyone here today would refer to teaching to the far side we look forward to it next time sharing Bye ~ Bye ~
