modulus
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・UK
A1 初級
n.名詞率；係數；模數
影片字幕
為什麼工字梁的形狀像一個 I？ (Why Are I-Beams Shaped Like An I?)
03:47
- E is the Young's Modulus which as explained in my Material Properties 101 video, describes the stiffness of the material.
E 則是楊氏模量，我曾在我的「物理屬性基本知識」影片中解釋過，這是拿來形容該材料堅韌度的常數。
亞當-薩維奇的迷你金庫門製作！(第二部分） (Adam Savage's Miniature Vault Door Build! (Part 2))
36:25
- Volt! Volt! Hi, hi everybody. I don't know whether this is a new episode or the continuation of the last episode, but when we last left, when we last, when we last left our intrepid hero, and for the purpose of the story, I'm the intrepid hero, I made a ring gear, a modulus half a millimeter, .5 mod metric gear, and it fits, come on, come on, there we go, whew, and so that right there is a reasonable proof of the depth thing, I did a 72 millimeter circle, I have a lot of adjustability in this diameter, because of the way I'm constructing my vault door, and because this relationship of these gears to the ring gear and the relationship of them to the racks that drive the pins, these spur gears will be attached to a separate ring that itself gets attached into the vault door, that will allow me to properly depth them to the racks, and to make sure that they're centered on this guy. But I get ahead of myself, because a new part has arrived in, and I get to play around with a new proof of concept, so this is a rack, and that is just a straight bar with gears on it, and it engages, it engages, yeah, there you go, you see how that works, so on a bank vault, there's a little rack next to each wheel, like that, and yes, I will have to mill away the backside of that rack, and then that rack goes into a pin, one that looks like that, and that is a dowel pin, which means it is hardened steel, and you can buy dowel pins, come on, these, each of these little spur gills, gills, each of these little spur gill, each of these little spur gears, will themselves move a rack outwards, and that rack will be attached to this pin, how you ask, this pin has a six millimeter threaded hole in it, the next construction phase of this is to make, is to take this rack, put it in the lathe, turn down one end to a six millimeter thread, use a die to thread it, yes, and then thread it into this pin, mill off the back, and that will be, so I will eventually have to do this 12 times, but for right now, yes, I just need a measurement, I just need one measurement, let's see here, not a mission critical measurement, it is, I think, yeah, so .2, and it is ., all right, so I just need to move, remove a hundred thou off the backside of that, that's great, how am I going to turn this rack to be round, it is a great question, and there are tools for doing exactly this, when I ordered the rack, I knew I was gonna turn its back end to be a six millimeter diameter, which meant that I wanted square rack, luckily I was able to find eight millimeter by eight millimeter square rack, these are 5C, and these are 3J, 2J, these are 2Js, these are 5Cs, those are both different collet holding systems, and a collet holding system is one in which you have a hole of a specific diameter, and you have some relief slots that as you pull this piece down into its holder, it squeezes those together, and it is a really nice, very reliable, and gentle way to grab something super tightly, I have these by 60 fourths, no, by 30 seconds, I have these set up by 30 seconds, and every collet holder system is a compromise of accuracy for convenience, but they are a wonderful system, and they make them in stranger shapes, like that, there's hex ones, there's hexagonal ones, which I put somewhere, but I bought an eight millimeter square collet, 5C collet holder, come on, there we go, see that, there we go, now I put that in,
伏特伏特嗨，大家好。我不知道這是新的一集還是上一集的繼續，但是當我們上次離開的時候，當我們上次離開的時候，當我們上次離開的時候，我們無畏的英雄，為了故事的目的，我就是那個無畏的英雄，我做了一個環形齒輪，模數是半毫米，.我做了一個直徑為 72 毫米的圓環，這個直徑有很大的可調節性，因為我是這樣構造我的金庫門的、因為這些齒輪與環形齒輪的關係，以及它們與驅動銷釘的齒條的關係，這些正齒輪將被連接到一個單獨的環上，而這個環本身會被連接到保險庫門上，這樣我就可以將它們與齒條適當地深度連接起來，並確保它們位於這個傢伙的
- And the practical result of non-identical means that this one, where this one is cut, re, the teeth is ever so different when this one is cut. Because I didn't think that was mission critical when I started. It is mission critical reader, which means that in order to do it for real, I'm going to need to make a fixture that holds all of these pieces exactly so that the cut and the tooth start, the relationship between the end and the first tooth is exactly, I'm talking within a 10th of a millimeter on every single one. A 10th of a millimeter, smaller than that. Smaller than that. It's got to be within a thousandth. Seriously, I think. At any rate. Let's see here. I'm going to pull the pins out. And I want to, of course, I'm going to like take this home and moon over it. Think about it. Come on, come on. I also didn't set up my rotary table correctly. So these don't actually travel through center, which is not actually necessarily a bad thing in terms of the geometric relationship. But yeah, no, there it's. Functionally, that doesn't change what I needed to learn from this. And the, the, the one unique addition I made to this, which was to rest my 12 spur gears on an adjustable ring that sits in a track here that can adjust the depthing of all 12 spurs at once. But that also means that when I go to drill out this piece, which I'm going to cut like four of these, and I think I can do two whole patterns per. At any rate, the depthing matters mightily. Depthing is the, the relationship between the gears, because you don't want the bottoming out. You don't want them too far out here. There is an optimal relationship as gears mess. That's the depthing is to find that. And this allows me some very fine control of the depthing without having to handle this, what will be a giant piece of steel metal. So I'm really happy with this. That's great. I'm still over the moon about cutting a modulus 0.5 gear. And I think this is like a reasonable place to stop this. This is the test build. So when I'm going to get through that thing, as to when I'm going to cut through the big chunk of steel, any day now, any day now.
而非相同的實際結果意味著，這顆牙齒被切開後，它的齒形是完全不同的。因為我開始的時候並不認為這是關鍵任務。這對讀者來說是至關重要的，這意味著為了真正做到這一點，我需要製作一個夾具，精確地夾住所有這些部件，使切口和齒的起點、末端和第一顆齒之間的關係完全一致，我說的是每一個都在十分之一毫米之內。十分之一毫米，比這還小。比那還小肯定在千分之一以內 It's got to be within a thousandth.我說真的無論如何讓我看看我要把插銷拔出來當然，我想把它帶回家，好好欣賞一番想想吧來吧，來吧。我也沒
