機構 | 機械 | 結構 教學-英制牙認識篇-如何入門分辨英制幾分牙及英制螺絲換算與購買螺絲須知[中英字幕]

Hello everyone, today to introduce the British papers screw know you are not often heard screws will come with a little more teeth to call it sometimes hear 3 points, 4 points, 2 and a half that number in the end what does this number actually somewhat the tooth is evolved from the inside over the Taiwanese are represented imperial screw specification is not often you have no way of knowing three points teeth in the end is what today is the size of an entry to this model, we meet some of this and a bit teeth how to tell it there is a faster way through understanding will not forget it in here know how to do it we keep looking Hello first, let's look at the British dental these dimensions it represents the general will in the end is how much it it converted to the metric system so more able to understand what it is that if the size of Taiwan is usually made with cm cm mm or two to representatives may probably know how much size usually is 1 inch = 25.4 2.54cm side table language is "a few hard squeeze" is 1 inch 25.4mm in such a form to know that 1 inch = 25.4mm here probably have several dimensions, for example child to learn what you like if you see a quarter is in addition to the 1 After dividing by 4 and multiplying by 25.4, we get 6.35, so the size of 1/4 is 6.35mm. If you are more accustomed to looking at cm, divide by 10, like 5/16, which is 5 divided by 16 and then multiplied by 25.4. 7.94 as look like you put 3 3/8 divided by 8 multiplied by 25.4 took 3 divided by 8 multiplied by 25.4 is 9.52, this is a bit similar with the metric system is relatively close to the M6 5/16 1/4 close M8 3 / 8 will be close to M10 1/2 M12 is probably closer to the side of the form so that we use to understand what this conversion know what to say on behalf of the British dental probably what size La is next to introduce inch coarse teeth marked by What is the meaning of my representatives here will inch coarse-based demonstration like to do first assumption is that there will be a general 1/8 back every inch of it is the number of teeth per inch -40 how many there are number of teeth like 1 / 4-20 is that it has a number of teeth per inch of example 20 1 / 2-12 is the number of 12 teeth per inch with a view from the side will find that when the larger size when it inch teeth per inch, the less will be the relative number of teeth this represents what this represents a larger screw size when it's pitch P will be greater here we want to know how it actually pitch number of teeth per inch it here on behalf of fact from this point of view the relationship with the pitch P actually pitch imperial to calculate its pitch is to use 25.4 divided by the number of teeth per inch assumption here is that 1/4 to 20 come here to calculate the operational details of it here to give you a way of marking is not the same with metric metric is presented directly out like M5x0.8 pitch is 0.8 M8x1.25 pitch is 1.25 inch here is to be done in terms of number of teeth per inch behind the main fact with the pitch of the screw is a relationship here to let you go Hello look next to introduce the focus of this chapter is that when we see a little more teeth when represented by what some are inch size screw to how to control out of it here, in fact, come from the evolution of this Taiwanese For example, after the side you could hear that 3 points, 4 points, 5 points in the end 3 points, 4 points, 5 points is representative of what size sometimes you may be asking after a recall, he just put it down after a while or results forget you still have to ask how many people here are three points in the end to how to tell it the way it actually has a more direct in the first 1 inch inside is divided into 8 equal portions fact, it is so divided into 8 to 1 inch after decile had eight points and will therefore start from 1 point 1 point, 2 points, 3 points up to 7,8 to 8 points here among us there will be some place here for a minute and a half to see how it does move here we see an example denominator of all turn it into a 8 inch sizes here are some general are already here give an example like 8 1 / 8,3 / 8,5 / 8,7 / 8 here represent 1/8 1 minute and 3 minutes is therefore 3/8 fraction is from 8 to see the inside of the molecule as it is here of 5 5/8 7 7/8 minutes remaining is some size it is not the denominator of the denominator may be 16 possible 8 32 is how to do it does not matter, put it into 8 here as an example here is the denominator becomes 1/4 1/4 8 how to do is to see multiplied by 2 after 2 becomes 2 / 8,2 / 8 direct point is two points here, sometimes there will be in addition to the assumption here is not like the 3/16 3/16 put into the denominator will become 8 divided by 216 divided by 2 is the original 8 3 / 16,3 divided by 2 1.5 becomes how to do it here is the representation of one and a half is one such means as we see more often is 5/16, 2 and a half so if you hear two and a half in the end it is how much is the size of 5/16 with such a concept can be more clearly know the original bit direct dental represented here as what size inch 1 inch equals 8 points is such a means which is divided into 1/8 inch and then divided into 8 8 See La molecule is like how much is special here is 5/32 second which is 1 2% 5 min after the calculated here because the decimal point is actually half minutes is 5 cm, which means that this concept here special is relatively rare in such a major rule can know in the end is a bit teeth here to let everyone to try La Next is to purchase Notes inch sizes when we know how much time is equal to a fraction of teeth may sometimes buy screws you may ask when hardware line it may say you want a bit of you may be shocked how I know it, so right this time if you have learned to just the chapters you will know that I want to, we can use a bit of way to know how many inch sizes need is in fact more often seen in Taiwan several dimensions like 1 / 4,5 / 16,3 / 8 these three are more common Hardware Stores in general more often see is usually screws are selling inch size is rarely sold in metric metric if you want to buy teeth like M5, M6, M8 this type may be going to some of the more special hardware store or is a special chain of department stores may only have a general hardware life found generally sell inch screws are in the three most common others, like the other two may be used but not many like to use the occasion 9 / 16 in fact, we are probably very common to 9/16 you do not know it is actually used in the above bicycle pedal like a bicycle, crank it up is to use 9/16 and the left side is the tooth, one side is right flank in this way is like 1 / 2,3 / 8 such comparisons often used in mat class or classes of moving wheels, more often see like the other screw specifications very common here is the use of know sometimes you may want to sort of teeth communication and do a bit with the front teeth to the inch sizes have understood if you want to convert to metric metric size because size is more able to know how much can be calculated know in the end after what size and dimension to know that through this way sometimes screw it in fact, has been marked to say sometimes possible to buy 3/8 of 3/8 may not find the specifications that you might say you want 3 points to perhaps find a few ways you can do to communicate more easily have to buy the British dental refer here to let each La inch screws to sum up the last chapter here know the most important is to explain just started learning English when the screw must be less familiar as unfamiliar with such a pattern might bit teeth in the end does not know what is represented inch sizes and it is generally assumed to be 3/8 in the end denominator molecule is much to learn several chapters through the front 3/8 is assumed to be divided by 8 multiplied by 3 25.4 you can know is probably around 9.5 through in such a way to know and is 3 3/8 points teeth through teeth because sometimes it is often a fraction of the industry in the time when it will communicate a bit with the three points, four points, two and a half so if you have learned to understand this way can clearly know that when the original judgment on behalf of what some are a bit dental screw sizes can accelerate understanding and communication through this way of teaching smoothly today went to the far side we look forward to the next teaching it Bye ~ Bye ~

Channel: FR Tools Man DIY

Views: 31,618

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Id: Oh9cPijDXgU

Length: 12min 18sec (738 seconds)

Published: Fri Sep 24 2021