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Пікірлер
@JCHaywire 2 күн бұрын
I would love to do this to my EC8. Better yet--let me buy you lunch and YOU do the mod. Ha ha. Cheers W0XO Seattle.
@micheldilly8531 6 күн бұрын
Désolé, mais c'est un travail inutile, moi j'ai un compact 8 depuis 42ans et ayant exécuté de nombre uses machines à vapeur model réduit, je n'ai jamais eu de problème de rigidité sur la glissière ??
@shannonsloan7246 19 күн бұрын
This guy’s got more talent in his left thumb than I do in my entire body
@jboos6256 28 күн бұрын
Sehr gut! vielen Dank für ihre Mühe, das ist schon eine Art Lehrfilm👍
@saravanaak3631 Ай бұрын
Very knowledgeable posting... Explains the function of boring and facing head.... It will be so appreciable to know where to buy this product or to know anyone is planning to sell this product Thanks in advance
@HaraldFinster Ай бұрын
Thanks for your kind feedback. Actually, I don't think that my video really explains the functionality. (I am planning to do a series on the facing and boring head since a long time though.) You can still buy the Wohlhaupter heads new, e.g. look for "Rabensteiner Universal Plan- und Ausdrehköpfe". The heads are frequently offered second hand on the usual well known auction platforms.
@sledgehammer4760 Ай бұрын
Hallo, eine sehr schöne Säge. Was schafft sie maximal an Vierkantrohr bei einem 45 Grad-Schnitt.
@HaraldFinster Ай бұрын
Hallo, ja, ich bin zufrieden mit der Säge. Die Frage kann ich leider nicht beantworten, da ich bisher keine Schrägschnitte durchgeführt habe. Tut mir leid.
@walterstrobel2425 Ай бұрын
Sachliche und klare Erklärung, Bilder sehr gut ausgeleuchtet und aufgenommen, keinerlei Show ! Schön zu sehen, dass es sowas noch gibt ! Vielen Dank!
@HaraldFinster Ай бұрын
Danke für den freundlichen und motivierenden Kommentar! Mit der Bildqualität bin ich - ehrlich gesagt - nicht ganz zufrieden. Das war wirklich herausfordernd, weil ich mit einem Balgengerät und Vergrößerungsobjektiv gearbeitet habe. Aber, ja, "coole show" scheint die Masse heutzutage zu brauchen - ich brauche das nicht.
@foogee9971 2 ай бұрын
Hallo Harald, vielen Dank für die ausführliche Erklärung! Habe mir gerade eine EMCO C 8 gekauft, da mir meine Proxxon 250 zu klein wurde. Jetzt muss sie nur noch gut ankommen : )
@HaraldFinster Ай бұрын
Glückwunsch zur Emco. Das ist eine gute Maschine. Man muss lernen, mit ihren kleinen Macken zu leben. (überteuerter und zu schwacher Keilriemen, schwacher Oberschlitten). Bau Dir einen festen Oberschlitten! Das bringt sehr viel Stabilität!
@foogee9971 Ай бұрын
@@HaraldFinster Jup, kenne das von der kleinen Proxxon (die sind ja alle mehr oder weniger EMCO Klones) ...hab mir da auch für's Längsdrehen einen soliden plangeschliffenen Stahlblock draufgeschraubt, das hat viel gebracht. ...hab natürlich auch schon Dein Video vom Compound angsehen...danke...sehr Hilfreich!! 😃👍
@robertszallavarysullivan9570 2 ай бұрын
Pretty cool video, Harald 👍
@marinocalvi8810 2 ай бұрын
Hi, nice work! I also have one thiel duplex 158. Have you maybe service manual or something like this. Because, i have problem with red lever. I can't pull it anywhere, and y and z axis don't work automatically.
@HaraldFinster 2 ай бұрын
Hi! Thanks for your comment. Please contact me via [email protected] for a manual. Do the "regular" (non fast forward) feeds work? Are you sure that you mean y and z? The auto feed of the y axis works mostly independent from the x and z feeds. That's why I am asking. If the x and z feeds don't work: there is a cardan joint underneath the gear boxes which drives the gear which in turn drives the lead screw of the z-axis and the shaft powering the x-feed. The cardan is connected to the drive shaft with a shear pin which might be broken. Just a guess. Feel free to contact me via the mail address given above.
@rodneykiemele4721 2 ай бұрын
Exexcellent video, thank you very much
@mftmachining 2 ай бұрын
Excellente Arbeit. Es ist immer klasse, wenn etwas einwandfrei funktioniert. Top.
@mftmachining 2 ай бұрын
Klasse geworden. Der Riesenaufwand hat sich für die spektakulären Nahaufnahmen schon gelohnt. Was ist denn bei der ersten Spindel schiefgelaufen? 👍👍👍
@HaraldFinster 2 ай бұрын
Bei der ersten Spindel hatte ich die Freistiche an den Enden vergessen. Dadurch passte der Gewindestahl nicht zwischen Drehkörner und Gewindeansatz. Ich habe dann den schlankeren Rollkörner der Emco verwendet, der aber ziemlich blöd gelagert und nicht sonderlich steif ist. Bei den outtakes sieht man das ganz gut. Da hatte ich allerdings beim Zurückfahren des Planschlittens auf Null eine Umdrehung zu viel gemacht und deshalb 1.5 mm zu viel zugestellt. Ausserdem waren die Gewindegänge ziemlich rau mit kleinen Ausbrüchen. Ich hatte ETG100 verwendet, das sich eigentlich sehr gut verarbeiten lässt, aber vermutlich war die Schnittgeschwindigkeit zu gering. Im zweiten Versuch war's dann Silberstahl (1.2210 / 115CrV3) - auch nicht das optimale Material, aber ich hatte nichts Passenderes am Lager. Mit viel Öl, höherer Drehzahl und winzigen Zustellungen wurde das Gewinde sehr schön.
@bobweiram6321 2 ай бұрын
Why bother making your videos in German. English is a Germanic language. 😂
@HaraldFinster 2 ай бұрын
The German version was on special request of a friend :-) and there is a quite large German speaking community ("zerspanungsbude")
@johnsherborne3245 2 ай бұрын
@@bobweiram6321 I’m grateful he does an English version, my German is dreadful, mercifully most technologists in Germany have at least some German. I once had to do a corrosion lecture in Germany, the lab was packed with factory staff some of whom had less English. The laughter was genuine as we all stumbled to an understanding of the evil nature of the chloride ion!
@bkoholliston 2 ай бұрын
Great project! Really sparking some ideas for me.
@jasonhull5712 2 ай бұрын
Very talented machinist! You definitely know your way around the shop. And I approve of any criticism you throw at us crazy Americans. This was very inspiring and get many people thinking. Thanks for sharing your thoughts and progress. 🇺🇸 🍻 🇩🇪
@HaraldFinster 2 ай бұрын
Thank you. You probably refer to metric vs. imperial: no criticism intended at all. People just like to use what they are used to use (3 x "use" :-) ) The size of the base unit doesn't really matter. The main advantage of the metric system is that all derived units are multiples of 10 (e.g. 1 km = 10*10*10 m). Thia makes conversions so easy. In the machining world expressing thread pitches in threads per inch is advantageous in comparison to what is usually used in the metric world (mm per thread revolution): thread dials work much better (no special gears required) with the TPI system. (Of course you could do the same in the metric system, i.e. expressing thread pitches in TPM (threads per meter)).
@jasonhull5712 2 ай бұрын
@@HaraldFinster no,no, I was only joking my friend. By criticism I just meant you can offer critique and it would be a valuable insight that one should see as a good thing. I was not at all trying to offend you or the metric system. I was only kidding. There is nothing wrong with the metric system. It’s an ongoing poking fun back and forth between us that’s all. Sorry to offend you. My machines are both metric and imperial and it often comes with some poking fun at me when I share some of my experiences and operations. This is the first time I’ve seen your content and I was just trying to make a little joke and support your channel by leaving a comment. No ill intentions harbored my dear friend.
@HaraldFinster 2 ай бұрын
@@jasonhull5712 Hi, no worries - I didn't feel offended at all. Thanks for your kind comment. I agree: there isn't anything wrong with either system, meters, inches or bananas (the latter seems to be the favourite measuring unit of my favourite Australien machinist (CEE) 🙂 )
@jasonhull5712 2 ай бұрын
Hey I think your calipers are broken.. they are reading funny looking numbers.. 😮😊😆
@bkoholliston 2 ай бұрын
Nice video and a great project! I actually bought a ~200mm table made for a small mill late last year to make a separate tilting table for my mill, but the design has been slow in getting off the ground. Your ideas will definitely be getting some design consideration! That UPA5 Wohlhaupter boring and facing head is a beautiful tool but, wow, that was quite a large stick out on the tools for both inner and outer cuts. I have done some large radii on my small mill using a pivoting arm but that was quite extreme! The head count and hair style comments are very funny too!
@wilhelmmmmm 2 ай бұрын
Sehr schön mit dem wohlhaupter , das abzeilen ist ein Fest der Mechanik, da hast du einen Oskar für Zerspanungsvideo verdient 🎉 .
@Stoeckermann 2 ай бұрын
How does it hold up against the stick slip effect? I had the much simpler idea of moving the table against a piece of wood thats stuck between the table and the floor. Someone said its more effective to tap the table as to overcome the friction little by little, rather than create tension/compression force of a screw or piece of wood... what are your thoughts on that?
@HaraldFinster 2 ай бұрын
Until now I just tried to adjust the table with the 1/100th mm (1/2 thou) indicator and it was pretty easy to hit the desired value. I used the device in such a way that the table was lifted. Thus gravity helped to keep the mechanism under slight tension/pressure and eliminates and play/backlash in the mechanism.
@johnsherborne3245 2 ай бұрын
Thanks for the idea.my first thought,this device represents a lot of care and hard work. My second was how would I do this? My mill has a fixed table, but the head can be rotated and angles set from an enormous protractor scale on the head, but fine adjustment with a strut operated by raising the X would be perfect. Excellent.
@HaraldFinster 2 ай бұрын
Just tried to adjust the table using a digital dial gauge with a 1µm resolution and I am pleased to tell that I was able to adjust the table within plus/minus 1 µm. (about 1/2 ten thousands of an inch)
@rodneykiemele4721 2 ай бұрын
Great shop project, thanks for. Sharing with us. Loved the out takes.
@StefanGotteswinter 2 ай бұрын
Elegante Lösung, gefällt mir, danke fürs Zeigen! Ich glaub der Neigbare Teilkopf meiner FP will sowas auch :D
@HaraldFinster 2 ай бұрын
oh, danke - aus Deinem Mund zählt das Lob für mich mindestens doppelt (rotwerd) 🙂
@dieterjosef 2 ай бұрын
Gute Idee und Umsetzung. Hat mich sehr vefrez, das Video gefunden zu haben.
@bobguarnieri280 3 ай бұрын
Sehr klug Harald, insbesondere die Federn.
@M.M-M 4 ай бұрын
Schönes Video und gute Arbeit. Aber warum nicht in Deutsch? Liesse sich deutlich angenehmer zuhören.
@HaraldFinster 4 ай бұрын
Danke! Die Videos sind auf Englisch (mit deutschen Untertiteln auf Wunsch), weil ich damit deutlich mehr Leute erreiche. Neuerdings sind die Videos sowohl in deutscher als auch englischer Sprache verfügbar.
@bobvines00 4 ай бұрын
Harald, when I drill or plunge mill any material which has stringy chips, I "peck drill" to break the chips. Since I assume that you are aware of this 'technique," is there a reason that you didn't do that with the stainless steel in this video? I ask because I'm sure that I'm unaware of possible reasons to *not* "peck drill" to break chips, at least in certain situations. Also, at about 20:45, when centerdrilling the stock in your lathe, your centerdrill appeared to move up before starting to cut -- was that an optical illusion, perhaps wear in your tailstock, or misalignment of tailstock center with the spindle centerline?
@HaraldFinster 4 ай бұрын
Thanks a lot for your comments and good questions. With regards to peck drilling: Honestly, yes, I am aware of the peck drilling technique, but in most cases I am just too lazy and did not develop the habit pd applying it. There isn't any good reason for not doing it. The friction clutch mechanism of my quill's auto feed would make it really easy to use. I will keep it in mind in the future. With regards to the moving center drill: you are probably right: I didn't notice this before watching my video. I have to check this - perhaps with a dial measuring the deflection of the quill. The tailstock alignment should be fine, but I will also recheck this. Thank you for your great contribution.
@5b4aezmarinoscyprus71 4 ай бұрын
Dear Harald, did you notice that at 6:07 the carbide chamfer end-mill is moving left and right...?
@HaraldFinster 4 ай бұрын
Well spotted! Honestly - no I didn't notice this. The reason for pre-drilling with the center drill was mostly because I wasn't sure if the chamfer end-mill would be able to "drill" in the very center. I would expect that this should be sufficient to keep the chamfer mill "on track". I am obviously wrong. And - again honestly - I don't have an explanation. I have to investigate this. One possible explanation could be an issue with my y-axis. (On my Thiel the y-movement is NOT done with the table but with the spindle stock.) Thank you very much for pointing this out.
@5b4aezmarinoscyprus71 4 ай бұрын
@@HaraldFinster no need thanks, you offering such beautiful job and ideas to everybody...keep the great work my friend.
@HaraldFinster 4 ай бұрын
@@5b4aezmarinoscyprus71 🙂 I just went down into my basement shop and did a few quick checks which confirmed my suspicions that the ways of the y-axix of my mill is adjusted incorrectly. I can move the vertical head sideways (perpendicular to the y-axis) by about 0.05 mm just with the force of my hands. With the axis locked the movement is below 0.01 mm. So, fixing this issue will be my next "project". An other issue is the fact, that I have more than 3 mm "backlash" in the y-axis, i.e. I have to turn the adjustment wheel by a full turn between positive and negative adjustments. Don't know if I will be able to film my repair.
@5b4aezmarinoscyprus71 4 ай бұрын
@@HaraldFinster that's a great idea filming the repairs of your milling machine. Just a suggestion, did you ever consider to replace the lead-Screw nut with ball nuts..? The tolerance with this type of nuts is zero...
@HaraldFinster 4 ай бұрын
@@5b4aezmarinoscyprus71 I considered this idea, but it would be a major modification. The backlash isn't a real problem for me, especially as I have a DRO on my machine which avoids the need of "overhooting" and targeting a specific measurement from one direction. I am pretty sure that my "backlash" issue is not caused by excessive wear of the spindle or spindle nut. I must have been drunk when I assembled the machine and probably forgot to tighten some screw properly. We will see...
@wyliemacbean1157 4 ай бұрын
Hello, just like the comment below. It is all about the little things which really are the big things. Math, setup, test runs, assessment of small test pieces, seeing correct speeds. I love your channel and the videos are of great quality and content. Maybe at the beginning or end you could add the speeds, feeds, measurements and the math that is needed. Thank you and Cheers. Wylie
@HaraldFinster 4 ай бұрын
Thank you very much for your kind comment. Adding info on the speeds and feeds is a good suggestion. I will keep it in mind.
@wyliemacbean1157 4 ай бұрын
Harald, that was awesome. I really liked the last 4-5 minutes and the setup you used, just fantastic. Cheers Wylie
@wyliemacbean1157 4 ай бұрын
That was great and it works really well. Great idea and functionality. Cheers Wylie
@mftmachining 4 ай бұрын
Klasse Arbeit, Harald. Ich habe grad vor ner Woche ein Video von einer ähnlichen Konstuktion in meinem Kanal veröffentlicht. Kannst ja mal reinschauen.
@lohikarhu734 4 ай бұрын
BTW, I wonder if Belleville spring washers are available from someone like Hoffman? Good idea using the "modified" locking washers!
@HaraldFinster 4 ай бұрын
Sure, it would have been possible to get Belleville spring washers. This would have been the "cleaner" solution. I just didn't want to wait for them and - honestly - I wasn't willing to spend 5 (or so) Euros to get 4 washers delivered.
@lohikarhu734 4 ай бұрын
Sticking in meine Nase... May i suggest: Use a small ball bearing as a turning point for the adjustment screw, and turn an internal "cone" on the adjustment screw end, to avoid any tendency to "wander" when turning...the ball should be in a short V groove to allow it to travel as the tip of the screw moves in an arc with the top plate. In a similar application, I mounted the adjustment screw in a "barrel" that was inserted "across" the upper body, so that it could rotate with the arc of the adjustment, and ran on a fixed ball in the bottom member. Alternatively, one can use such a "barrel" in both plates, the one in the bottom can just sit in a V slot, but each barrel has a different thread, z.B. 6 mm standard and 6 mm fine, to achieve a differential thread adjustment, getting something like 0,2 mm per turn... Probably not too clear an explanation, sorry that it's not possible to insert a sketch. Trotzdem, nice job, nice video, kudos for showing an error, and how you fixed it!
@HaraldFinster 4 ай бұрын
Excellent thoughts and explanation. Thank you very much! I did not think of the trick with the ball bearing but considered using the differential thread trick.
@SergeiPetrov 4 ай бұрын
But the differential screw will have to be untied in the middle with a cardan (or other coupling), otherwise everything will jam
@HaraldFinster 4 ай бұрын
@@SergeiPetrov if I understand the original suggestion correctly, the adjustment screw should run in slewable threads. This would solve the problem.
@daveharriman2756 4 ай бұрын
A very good and functional design, i like it!
@MegaRiffraff 4 ай бұрын
👍🏻
@rodbutler9864 4 ай бұрын
Outstanding (& your secret is safe with me) ……subscribed !
@HaraldFinster 4 ай бұрын
Thank you. "your secret is safe with me" I am relieved ;-)
@MatthewTinker-au-pont-blanc 4 ай бұрын
Very nice mate!
@oldfarthacks 4 ай бұрын
A good idea. Thanks.
@HaraldFinster 4 ай бұрын
You're welcome!
@pirminkogleck4056 4 ай бұрын
wow! very nice one ! it seems that the adjustment works flawless !
@TorteTS 4 ай бұрын
Sehr elegante Lösung. Wahrscheinlich auch son sattes“ Gefühl beim Verstellen. Ähnlich den Gewinden an alten Kameras. Mann möchte dauernd verstellen…
@wilhelmmmmm 4 ай бұрын
Sehr schön gemacht 👍
@bkoholliston 4 ай бұрын
I have read about this technique several times but it is great to see it worked out in practice!
@stephang516 4 ай бұрын
Danke für das hier. Es hat mich inspiriert in meiner Anleitung meiner Cnc Steuerung zu schauen ob Ich Gewinde also G76 über Rampe einfahren kann. Ja es geht und die Resultate sind super. Ich hab vielleicht auch einen Trick für dich. Wenn du fest stellst das dein Werkstück vibriert beim drehen dann kannst du das ein bisschen bekämpfen in dem du die Drehzahl hoch und runter regelst während dem Schnitt. Danke dir nochmal Gruß Stephan
@rupunzel6299 5 ай бұрын
Nice illustration of reducing cutting loads on small lathe by making small segments cutting passes towards the finished thread form. What is also clearly illustrated in this example is how thread cutting involves both cutting edges of the thread form cutting tool by the pattern of metal being deposited in the edges of the thread form cutting tool. On modern A60 series "lay down" threading inserts, edges of the insert have a positive rake moulded into the insert designed to accommodate the fact both edges are cutting the thread form. It is why the Anglo-American method of threading in-feed using the compound makes no significant difference in single point thread cutting relative to the rest of the world's direct in-feed for single point thread in-feed threading.
@oldfarthacks 5 ай бұрын
Makes sense, use the compound to move in along the forward face of the cut with each pass. For a final finish, you could then do a spring pass at full depth.
@advil000 5 ай бұрын
If you had a small lathe with CNC capability, it should be possible to make this a conversational routine! This would be a game changer if it was a normal option for cnc threading on small machines you could get away with some monster threads and not have the real danger of human error involved with this process.
@HaraldFinster 5 ай бұрын
Good thought. Yes, I agree (although I am not a CNC machinist).
@BronzeAgePuritan 5 ай бұрын
I will try this on my hobbymat just for the fun of it. It seems that this could also be used to create multi-start threads.
@HaraldFinster 5 ай бұрын
Yes, you can certainly use this technique for multi-start threads. I am not sure if the precision of the combined cross- compound-slide adjustment is sufficient if you just trust the dials. Alternatively (or in addition) you could use a dial indicator to measure the longitudinal displacement of the tool. Certainly worth a try (and a video :-) )
@dariodamico3033 5 ай бұрын
Good trick. Watching the video I thought it would be nice to have a second tool on the opposite diameter already offseted axially so it would be possible to cut on the returning stroke as well.
@HaraldFinster 5 ай бұрын
Thank you. Yes that would certainly speed up the process. But I suppose that the setup would be difficult due to the backlash in the lead screw.
@wilhelmmmmm 5 ай бұрын
Super erklärt, meinst du das geht auch bei innengewinde? Wenns denn groß genug ist . MfG Willi
@HaraldFinster 5 ай бұрын
Im Prinzip müsste das funktionieren. Das Ankratzen für die Längsverstellung wird dann allerdings schwierig, weil man wenig sieht. Eventuell könnte man das dann "blind" über die Skala des Oberschlittens machen. Den erforderlichen Verstellweg kann man ja berechnen.
@peg3116 5 ай бұрын
Wenn Du jetze noch zeigst wie die "kleine Maschine " auf diese Steigung kommt und aus Alu Stahl wird, wäre das "Hexenwerk" :D
@HaraldFinster 5 ай бұрын
Die passende Räderkombination war in diesem Fall einfach zu finden: bei einer Leitspindelsteigung von 1.5 mm ist für ein 4.5er Gewinde eine Übersetzung von 3:1 erforderlich. Das ging hier so: Ritzel auf der Spindel = 40 Zwischenzahnrad = 80 (irrelevant) auf der Zwischenwelle 40 - 75 auf der Leitspindel : 25 Zur Ermittlung von Wechselradkombinationen für "exotischere" Gewinde habe ich mir mal ein kleines Script geschrieben. Nein, aus dem Alugewinde kann ich kein Stahlgewinde zaubern ;-) Ich habe die Herstellung des Stahl-Gewindes damals leider nicht gefilmt. Das wäre allerdings noch deutlich langweiliger geworden, als diese Demo in Alu. Man hätte auch wegen der sehr geringen Zustellungen wenig gesehen.