Відео

ООО про преодоление языковых барьеров это весьма интересная тема ! В фильме кин-дза -дза « очень трудно понимать , когда сразу на двух языках думаете ».В этом отрывке очень хорошо сказано про языки , посмотрите на досуге . На Украине прилагают огромные усилия для перехода на неродные языки . Тема не родных языков там весьма актуальна . В некоторых местах , говорить на родном языке связана с риском для жизни .

Thank you! An unfortunate mistake(.

Hello Jan! I am currently filming a lot of interesting material, but I do not have time to turn it into a video. I am already approaching the end of the repair. Now I am scraping the mating rails of the machine table. There are interesting technological features in this operation, which, as a rule, are overlooked. And in general, this repair gave me an impressive experience. Thank you for your support and attention!

Обычно задача может быть решена несколькими разными способами, а результат окажется примерно аналогичным. Но у меня есть дополнительные аргументы в отношении предложенной методики. С увеличением длинны мостика она становится все более выгодной. Кроме того, примерно так я намерен выравнивать поверочную плиту, 600 на 600 на 200 мм. Заготовка одна, и весит более 200 кг. Можно и методом трех плит, но я предпочту за счет измерений.

Since I built the room myself, I paid attention to the floor. I used more expensive and more rigid reinforced concrete floor slabs so that the floor would be resistant to deformation. In addition, I unfortunately forgot to mention this in this video, during the measurements I am located on an additional suspended floor fixed to the upper floor of the floor. You can see a steel rod going down from the ceiling, this additional small floor is suspended on it. In earlier episodes I talked about it. Also, thank you for your remark about the synthetic voice. You said that at first it was negative. I will take this into account. It is difficult for me to voice the entire video myself, but in the future I will first pronounce part of the text myself, and then I will apologize for the forced use of a speaker for most of the text.

@gena_bazarko no problem. I can tell you know what you're doing. I'd put you up there with Robin Renzetti from just 1 video... I will follow your YT journey.

Фетр обычно и применяется, только я взял фетр из шляпы. А шляпы делают из наивысшего сорта фетра, то-есть на шляпы идет очень тонкая шерсть, и фетр получается очень плотный и упругий.

@gena_bazarko Не знал, я раньше видел только скребки из резины) Спасибо!

The question is not quite clear to me, but I will try to answer. If I had optical flat glass of the same size as the measured surface (1070 mm x 60 mm), then I would turn on a low-pressure sodium lamp, and I would immediately see where the three highest points on the surface are along the interference lines. But I only have glass with a diameter of 120 mm (.

For a straight edge, you can use the three-surface method, but to avoid "propeller", you need to additionally use an accurate bubble level. On a surface plate, this is not necessary, since it is possible to turn 90 degrees, which prevents "propeller". According to the method shown, it is easier for me to make a flat surface.

The laser would need to be projected onto a wall at a distance of approximately five to ten kilometers to functionally approach the level of 4.5 arc seconds. This is assuming that the laser point itself at five kilometers will not become huge, but will remain the same as at a distance of 10 meters.

@gena_bazarko wow is it that's far?! Ok that's it going to work! What about an autocollimator? I thought they were able to measure pretty high accuracy using reflected light... I admit I have not been able to full grasp how they work, despite watching several videos on them. I've seen people using them to calibrate surface plates so I assumed that would be extreme accuracy...

@@tomgrant6563 The 0.5 arc second autocollimator has approximately the same accuracy as the level (scale division 4.5 arc seconds), which I use in this video in tandem with the stand. And if you measure a plane in a horizontal position, it is easier to use a level than an autocollimator. The advantage of an autocollimator is that you can measure both an inclined and vertical plane. Sometimes this is important, for example, if you need to measure a prism-like linear motion guide.

​@gena_bazarko then how does an autocollimator work so accurately if it only operates over a distance or about 1m? (Or maybe 2m as it's reflecting back to itself again)? Is it simply because of the small size of its graduations and cross-hair? Or is there some other concept at play that I have missed? (I just watched the laney machine tech video where he treks to explain how they work).

Yes, I can go to the regional office of the Institute of Standardization and Metrology. There are surface plates, including granite ones.

@@gena_bazarko I'm surprised you don't have one yourself. They're relatively inexpensive and not too rare. It's just good to have one for convenience.

The video is already long, and I haven't told you about many details at all. After the glue hardened, I drilled small holes, cut M5 threads and, in addition to the glue, secured the amplifier with bolts. I couldn't deform it anymore, since the glue was already hard. The bolts were cut flat and became invisible.

Thank you! Please tell me in more detail how you can help with the camera, even if only in an advisory capacity. My email is- den.gennady19@gmail.com

Thank you! You helped me understand these terms. There were nuances associated with the translation of terms, and only now do I correctly understand what is what.

Треба враховувати, що плита буде мати певні відхилення від абсолютної площини. Що-б ці відхилення виправити, знов таки треба чи оптичну лінійку, чи цей же метод вимірювання, тільки адаптований до повірочної плити, і знов таки знижувати високі місця. По суті те-ж саме.

@gena_bazarko Так, але гранітка більш стабільна, її один раз зробив і можна користуватись десятки років, а сталь постійно пливе, тому всі стальні лінійки часів срср зараз криві, сам мав такий негативний досвід з лінійками ШП, а от гранітна плита тих часів зберегла свій класс точності

Це верстат 16Б04П. Я думав шабрити станину вручну, що було-б напевно цікавіше, ніж прошліфувати її на плоскошліфі, але можливо я все-ж прошліфую її, обставини це з часом визначать.

I assume that the method I use in this video is much easier to implement in real life. I plan to make the surface plate in exactly the same way. And the larger the surface plate, the more profitable it is to use this method.

Whitworth you mean? 3 surfaces to gring together?

Greetings! So, when all layers of the ruler body have identical temperature, it is not deformed. First of all, it is possible to create thermal deformations by heat from the hands and body of the operator. In this regard, you need to be extremely careful on the final approaches to scraping, when the smallest dimensions play a role. When I do this final work, appropriate safety equipment will be used. Вітаю! Так, коли всі шари тіла лінійки мають тотожну температуру, вона є не деформованою. В першу чергу створити теплові деформації ймовірно теплом від рук та тіла оператора. Максимально обережним у цьому відношенні потрібно бути на фінальних підходах шабріння, коли найменші розміри грають роль. Коли я буду виконувати цю завершальну роботу, відповідні засоби будуть застосовані.

@@gena_bazarko одягнути печатки не проблема. Але я сумніваюсь що у тому приміщенні стабільна температура повітря. ..... Ідеалу не зробите за будь яких умов. Як тільки увімкнете верстат то почнеться дія температурного градієнту, тобто верстат бути грітись і охолоджуватись у різних місцях по різному. Але сотку зловити можна.

Цікаво побачити ремонт шпинделя. Тільки підшипники (хочь кочення, хочь ковзання) будуть коштувати дуже дорого.

Rendu à ces niveaux de précision, la température est critique. Tout gradient de température et différences de coefficients d’expansion thermique entre les divers matériaux causeront des distorsions. 1um de tolérance pour une telle surface exige des conditions dignes des meilleurs laboratoires de métrologie dimensionnelle. Je tiens toutefois à mentionner que l’approche utilisée est très scientifique. Personnellement, je ne crois pas qu’une telle précision soit requise pour le ré-usinage des coulisses d’une telle machine. Les autres limitations de la machine car la qualité des roulement, les vibrations, les gradients de température lors de l’opération de la machine, l’environnement dans lequel est installé la machine sont tous des éléments d’influence qui réduiront la précision des usinages effectués.

Steel is not good straight edge material. It will not bend back to zero like cast iron.

I have prepared for the activities to prepare the Biax scraper for operation, I need to assemble a 48 volt power supply and put the anchor collector in order.

I haven't finished the repair yet. A significant part of the time is spent on creating the necessary devices for performing the repair. For example, now I have started working on the machine table. Many rigging components were needed in order to provide the necessary capabilities for manipulating such a massive part of the stack. It took about two weeks to make them.

Hello! I am interested in your ideas. Thank you for expressing them. They are original and reasonable. I am inclined to perceive and analyze them. Probably everyone here is also interested in them.