Appears in the Ye Qing eye, is a silver-white Standard hexagonal nut. 出现在叶青眼中,是一颗银白色标准六角螺母。 Pinches this nut gently, the Ye Qing first response is this nut is very heavy. 轻轻捏起这颗螺母,叶青第一反应就是这颗螺母很重。 With its size same Standard nut, probably about seven grams. Ye Qing has to do with these things frequently, grasps to its weight is accurate. However this nut starts, weight actually about 15 grams. 和它尺寸一样的标准螺母,大概在七克左右。叶青经常和这些东西打交道,对它的重量把握非常准。但是这颗螺母入手,重量却在十五克左右。 The weight increases, explained that this nut used the density bigger high hard alloy manufacture. 重量增加,说明这颗螺母采用了密度更大的高硬合金制造。 When Ye Qing pinches this alloy nut when the hand, aims at the top of the head crystal lamp observation inner wall thread. 当叶青把这颗合金螺母捏在手上,对准头顶水晶灯观察内壁螺纹时。 Had been polished the strong nerve by monsters Ye Qing, cannot bear be surprised unexpectedly. 已经被怪兽们打磨出强硬神经的叶青,竟然忍不住惊讶起来。 In this nut, actually does not have the thread. 这颗螺母里面,竟然没有螺纹。 The somewhat clear nut, under the light, presents the light metal reflection. 有些晶莹的螺母内部,在灯光下,呈现淡淡的金属反光。 Has the reflection, has the metal mirror surface on representative. But in an inner wall of nut, unexpectedly and seamless precision manages is equally smooth like the mirror. 有反光,就代表有金属镜面。可是一颗螺母的内壁里,竟然跟无缝精密管一样光滑如镜。 Without the nut of thread, this can also call the nut, perhaps called the metal gasket more appropriate. 没有螺纹的螺母,这还能叫螺母么,或许叫金属垫圈更合适。 What is the nut? 螺母是什么？ The nut is in the modern|Hyundai industry and life, most common metal components. The nut with the screw, both closely links plays the fixed thing the principle, even the first-grade children know. 螺母是现代工业和生活中,最最最常见的金属零件。螺母配螺丝,两者紧紧结合在一起起到固定物件的原理,连一年级小朋友都知道。 In the nut called to measure the thread, on the screw or the bolt calls the outside thread. The nuts and screws of two same specifications, can link. 螺母里面叫内测螺纹,螺丝或螺栓上面叫外侧螺纹。只有两个同等规格的螺母和螺丝,才能连接在一起。 The diameter is the same, the mark interdental between threads is apart from same. 直径相同,螺纹之间的纹牙间距相同。 Without the thread, that also screws tight the connection with the screw? 如果没有螺纹,那还怎么与螺丝拧紧连接？ The mistake of this violation physics general knowledge, Ye Qing believes that Japan Technologies is impossible to violate. Since they treat as the gift to present as a gift proudly this nut, in that this nut is certain has the universe. 这种违反物理常识的错误,叶青相信日理工不可能犯。他们既然骄傲地将这枚螺母当作礼物赠出,那这颗螺母一定内有乾坤。 „Has the magnifying glass?” “有放大镜么？” The nods of some Professor Cai Chenning solemn, hand over Callander 300 times of portable microscopes. 蔡晨宁教授有些严肃的点头,递上一部卡兰德300倍便携显微镜。 The portable microscope of bringing light source, was usually used to observe the jewelry surface, with metal material roughness of surface. It be only the size of cell phone size, is suitable to carry. 自带光源的便携显微镜,通常被用来观察珠宝表面,和金属材料表面粗度。它只有手机大小的尺寸,非常适合携带。 Adjusts the good resolution with the light source, Ye Qing the lens of portable microscope, aimed at this cap nut bore. 调整好分辨率跟光源,叶青将便携显微镜的镜头,对准了这枚螺帽内孔。 On the Ye Qing's face also became solemn, under 300 times of enlargements, seemed like the mirror surface equally smooth cap nut bore. In unexpectedly measures the thread to appear, these thread encirclements, spacing between mark teeth and mark teeth, to incredible. 叶青的脸上也变得严肃了,在300倍放大下,原本看似镜面一样光滑的螺帽内孔。竟然有一道道内测螺纹出现,这些螺纹一圈圈环绕,纹牙与纹牙之间的间距,小到让人难以置信。 Under the observations of 300 portable microscopes, can see clearly in the mark teeth reluctantly, there is trace that gets down together hollowly. 三百便携显微镜的观察下,才能勉强看清纹牙之间,有一道凹陷下去的痕迹。 These mark teeth thin? 这些纹牙有多细？ A thickness of hair silk on average is 0.06 millimeter, however a hair silk, can easily see with the naked eye very much. If hair silk arrange neatly, the middle does leave leeway the crevice of similar thickness, the human eye can look? 一根头发丝的厚度平均是0.06毫米,然而一根头发丝,用肉眼可以很轻易地看见。如果一根根头发丝整齐排列起来,中间留有同样厚度的空隙,人眼能不能看出来呢？ Approached the careful observation, can discover the clue. Ye Qing entrained a hair to get down, puts under the portable microscope to observe, and remembered the focal distance and general width in the heart, later aimed at the inner wall of that alloy nut. 凑近了仔细观察,是可以发现端倪的。叶青拽了一根自己头发下来,放到便携显微镜下观察,并在心中记下焦距与大概宽度,随后再对准到那颗合金螺母的内壁。 Compared with the hair silk, the one turn of rifling, unexpectedly small to is unable to judge. This indicated the slit between mark teeth, must be smaller than hair silk 1/10 by far, as for specifically small to many, has gone beyond the higher-order aberration ability of human eye. 与头发丝相比,螺纹间距,竟然小到了无法判断。这说明纹牙之间的缝隙,要远远小于头发丝的十分之一,至于具体小到多少,已经超过了人眼的视觉分析能力。 „We use the laser interferometer measurement, the one turn of rifling is 0.2, the depth of thread is 3.” Professor Cai Chenning gave the answer. “我们用激光干涉仪测量过,螺纹间距是0.2丝,螺纹深度是三丝。”蔡晨宁教授给出了答案。 „No wonder.” “怪不得。” Ye Qing understood, the human eye can distinguish also to want the thin many things compared with the hair silk, under sufficient photo sources and different luster contrasts, even can see the silk. However the so tiny thing, had reached the limit of naked eye identification. 叶青明白了,人眼可以分辨出比头发丝还要细很多的东西,在充足光源和不同色泽对比下,甚至可以看见蚕丝。但是如此细小的东西,已经到了肉眼辨认的极限。 The simple root silk is good, if two silks by the same place, the middle leave leeway the crevice of similar thickness, that human eye will tacitly approve for is. 单根蚕丝还好,如果两根蚕丝靠在一起,中间留有同样厚度的空隙,那人眼就会默认为是一根。 At present these threads, is the similar principle. It was too thin, only then 30 of hair silk 1 are so thick. 眼前这些螺纹,也是同样的原理。它实在太细了,只有头发丝的三十分之一那么厚。 Superfine thread encirclements, have exceeded the visual identification limit of human eye naturally, produces this nut surface to have no misconception of thread. 一圈圈超细的螺纹环绕,理所当然地已经超过了人眼的视觉辨认极限,产生这颗螺母表面没有任何螺纹的错觉。 1 hundred-thousandth, in industrial processing, became 1 frequently, 1 is equal to 0.01 millimeter. 一忽米,在工业加工中,常常被成为一丝,一丝又等于0.01毫米。 But now international Five-axis Processing Center precision, precision usually in 0.2 silk. Domestic precision in 0.8 silk this. 而现在国际五轴加工中心的精度,精度通常在0.2个丝。国内的精度在0.8个丝这样。 This merely gross data, in the actual operation, thinks that arrives at 0.2 silk precision, must correct the best level machine tools, uses laser at times the CNC, the tool abrasion automatic compensating. 这只是理论数据,实际操作中,想到到达0.2个丝的精度,就必须将机床调校到最佳水平,利用激光时时对刀,刀具磨损自动补偿。 In Ye Qing hand this nut, already represented ordinary Five-axis Processing Center processing limit. 叶青手中这颗螺母,已经代表了普通五轴加工中心的加工极限。 „an eye opener, who can imagine Japan Technologies University, can make this nut?” Professor Cai Chenning somewhat said sorrowfully: „Initially attained this nut, we have the student not to know the business, ridiculed that Japan Technologies University does not divide the nut and gasket clearly, delivers a gasket that does not have the thread, asserted that is a nut.” “开眼啊,谁能想象日理工大学,能把一颗螺母做成这样？”蔡晨宁教授有些悲痛地说道:“当初拿到这颗螺母,我们还有学生不懂行,嘲笑日理工大学连螺母与垫圈都分不清楚,送一个没有螺纹的垫圈,硬说是螺母。” „Also some people asked me, commercial five axis can center the precision control in 0.2, in that laboratory, be able high of precision control, why unable to make a screw bolt unexpectedly theoretically?” “还有人问我,商业五轴中心竟然能把精度控制在0.2丝,那理论上实验室里,就可以把精度控制的更高,为何造不出一颗螺丝钉？” Because of this screw, must form a coherent whole, has several hundred naked eye not obvious threads to come out above processing. 因为这颗螺丝,必须一气呵成,在上面加工出几百道肉眼不可见的螺纹出来。 The key you must have cutting tool that can the tapping, let alone the market cannot purchase, foolish talk that my oneself make. Makes one to the cutting tool of screw tapping, may compare to produce such a screw more difficult by far. 关键你还得有可以攻丝的刀具,别说市面采购不到,我就自己造的蠢话。制造一个可以给螺丝攻丝的刀具,可远远比造一颗这样的螺丝难多了。 The mark tooth of this screw or nut was too thin, if Factory machine tools cuts a blade from the alloy steel products gently, cuts a thickness of silk. 还有这颗螺丝或螺母的纹牙太薄了,工厂机床如果轻轻从合金钢材上切一刀,就切一个丝的厚度。 That that cuts, can never be a vertical metal piece, but is one with the candy cane same volume skin. 那切下来的那一丝,永远都不会是一根垂直的金属片吗,而是一根和棒棒糖一样的卷皮。 This is the metal stress, the cut-in angle and metal toughness of thermal deformation and cutting tool, the děng děng|etc|wait factor in the unseemly behavior. 这是金属应力,热变形、刀具的切入角度、金属韧性,等等因素在作怪。 Professor Cai Chenning thinks the ghost to know, Japan Technologies University, how achieves, in a five millimeters high nut, processing has several hundred 0.2 spacing the super precision threads? 蔡晨宁教授心想鬼知道,日理工大学,是如何做到,在一个五毫米高度的螺母内,加工出几百道只有0.2丝间距的超精密螺纹？ The thread that most essential others processing has not distorted. 最关键人家加工出的螺纹还不变形。 „On metal material that answer nut uses.” Ye Qing is staring at this represented most state-of-art processing technology nut, said in a soft voice: „Japan(ese) has the achievements in special alloy this, ordinary metal is not thermostable, the alloy material that they use, should be able to avoid the metal stress, with thermal deformation.” “答案这颗螺母所用的金属材料上。”叶青凝视着这颗代表了最尖端加工技术的螺母,轻声道:“日本在特种合金这块颇有建树,普通金属不耐高温,他们所用的合金材料,应该可以避免金属应力,和热变形。” „My also speculation is such matter.” Professor Cai Chenning asked cautiously: „Which alloy but regardless, to 0.2 thickness, will bump thinly gently distorts.” “我也猜测是这么回事。”蔡晨宁教授小心翼翼地问道:“但无论哪种合金,薄到0.2丝的厚度,都会轻轻一碰就变形吧。” The disciple who „I lead, produced an extremely thin probe with hand-made, tests thread degree of hardness. Thinks that bumps gently distorts, but the thread of this nut not.” “我带的弟子,用手工磨出了一根极细的探针,去测试螺纹硬度。原以为轻轻一碰就变形,可这颗螺母的螺纹并没有。” „Possibly was nano-meter coating increased the degree of hardness, with the plasma chemical vapor deposition, can cover one layer, only then Diamond of several nano-sized thickness rubbed the level.” By Ye Qing that one group of top grade monsters bring, some not too definite saying. “可能是纳米级镀层增加了硬度,采用等离子体气相沉积法,可以镀上一层只有几纳米厚度的金刚石磨层。”被一帮顶级怪兽们带出来的叶青,有些不太确定的说道。 To this craft, understanding Professor Cai Chenning, a person fell into long time to smile bitterly during slightly. 对这种工艺,也略微了解的蔡晨宁教授,一个人陷入了长时间苦笑当中。 Any processing technology that because Ye Qing said that they cannot achieve. 因为叶青所说的任何一种工艺技术,他们都做不到。 Not only their Zhongyun University cannot achieve, these exquisite enterprises that Professor Cai Chenning knows, no can achieve this. 不仅他们中云大学做不到,蔡晨宁教授认识的那些精工企业,没一个能做到这点。 Therefore, he telephones to Ye Qing brazenly, must invite Ye Qing to eat meal. 所以,他厚着脸皮打电话给叶青,要邀请叶青吃饭。 On the Lianping day in uncorrupt, the principals who almost never participate in the dinner party ran, looks at Ye Qing eagerly. 就连平日里两袖清风,几乎从不参与饭局的校长都跑来了,眼巴巴看着叶青。 „...... Always, can you... make this type of screw?” Principal Wang Hongnian of scholarly, somewhat blushes at this time. He is a typical old-fashioned education person, usually saw the student, is pulls a long face to keep own mechanical solemn image. “叶叶……总,那您…能做出来这种螺丝么？”儒雅的王宏年校长,此时有些脸红。他是一位典型的老派教育主义者,平素看见学生,都是绷着脸保持自己的刻板严肃的形象。 Ye Qing is also his student, this little while Principal Wang Hongnian is thick is requesting the Ye Qing help shamelessly, always has the feeling that an image all destroys. 叶青也是他学生,这会儿王宏年校长厚着老脸请求叶青帮忙,总有种形象全毁的感觉。 Especially on table, but also sat more than ten in reading the situation of student. 尤其是桌子上,还坐了十多位在读学生的情况下。 However this little while, no one has scruples the principal image non- image. 不过这会儿,没人去顾忌校长形象不形象问题。 Immediately the face of Zhongyun University must not have, now in the campus forum, Mechanical Engineering Department becomes the national criminal, this screw must unable to do, their objects could not find, but also cares about the principal? 马上中云大学的脸都要没了,现在校园论坛里,机械工程系都成了民族罪人,这颗螺丝要做不出来,他们连对象都找不到,还有空关心校长？ Everyone eager looks at Ye Qing, Ye Qing is carrying the chin: „Making the screw is simple, the key I graduate now, this academic exchange in school student.” 所有人都在眼巴巴的看着叶青,叶青端着下巴:“做螺丝简单,关键我现在毕业了呀,这个学术交流会都是在校学生吧。” Makes screw simple Ah! 做螺丝简单啊！ Making the screw is simple...... 做螺丝简单啊…… Initially Principal Wang Hongnian who Japan Technologies University this wolf called, has not heard the following a few words completely, a brain heat, bang stood from the chair, expression became Bureau of Education Chief to be excited: „Chief Ye makes a screw to come out quickly, ruthlessly lesson that help/gang arrogant fellow.” 当初把日理工大学这头狼召来的王宏年校长,完全没听见后面一句话,脑子一热,砰地从椅子上站了起来,表情比自己当上了教育局局长还要激动:“叶总快做一颗螺丝出来,狠狠教训那帮自大的家伙。” „Chief Ye the graduation time, hadn't the school sent the graduate student request form initially?” The Professor Cai Chenning eyebrow was about to fly, excited kept rubbing hands. “叶总当初毕业时候,学校不是有发过研究生申请表么？”蔡晨宁教授眉毛都快飞了起来,激动的不停搓手。 „Probably has......” Ye Qing naturally to remember that form, merely Ye Qing knows oneself are not that brick, will fill will not pass, hands over gives to rub. “好像有……”叶青当然记得那张表格,只是叶青知道自己不是那块料,填了也不会通过,转手就给揉了。 Professor Cai Chenning, a blank form pats, in rotated on the dining table. 蔡晨宁教授啪地一声,把一张空白表格拍在了回转饭桌上。 „Welcome Chief Ye to come our school to go study the graduate student, you do not need to attend class, that damn programming must walk, depends on your expertise, does not have the issue with the doctorate directly.” “欢迎叶总来我校就读研究生,您不用来上课,要不是那个该死的程序要走,就凭您的专业知识,直接拿博士学位都没问题。”