Westlake Publishing Forums

Small parts are fiddly and almost always take more than their share of time.

Each piece is in itself a jewel. Utterly fantastic work and I wag my head in disbelief with each posting you make.

The time with the rivets is usually very monotonous, so I always switch to other sections. There are more than enough of them fortunately   
So the parts for the inner and outer wooden boxes of the portal beams were milled out of MDF and poplar plywood.


Träger_Montage_mit_Schacht_09 (fspg2)


Träger_Montage_mit_Schacht_32 (fspg2)



Here is the inner removable box on which the gantry is permanently mounted.

Träger_Montage_mit_Schacht_33 (fspg2)


The inner shaft has already been loosely inserted as a test and the surrounding individual parts checked for accuracy of fit before the outer wooden frame will be firmly glued in place.

Träger_Montage_mit_Schacht_34 (fspg2)



The original idea of later servicing the lifting mechanism through a cutout from below was discarded. During trial assembly, after lifting out the inner unit, I was able to get to the mechanism after all in such a way that greasing from above would be quite convenient.
So the right outer side panel was re-milled - now without a side access hole.

Träger_Montage_mit_Schacht_35 (fspg2)

That looks as though it will be a rather large model when it is complete. -- Russ

It is always a pleasure to see how this model grows.

Bernhard

Today a small continuation, so that the model continues to grow.

After I could get more accurate original drawings of the shaft of the lift bridge in 2019, I had re-milled the plexiglass base body.

Here still the old state:


Contrary to initial assumptions, the guide rollers of the floating cylinder were rotated exactly 45°.




For the new version, the wall parts for the lateral inspection shaft were missing until now.
Shaft_01 (fspg2)


In order to be able to look through the side opening into the inspection chamber, the right side wall was only indicated.

Schacht_02 (fspg2)


Schacht_03 (fspg2)


Schacht_04 (fspg2)


The ladder was soldered in an already existing Pertinax gauge.

Schacht_05 (fspg2)



The lateral protruding wire ends were carefully cut off with a 0.5mm thin saw blade on the Böhler circular saw and the side surfaces smoothed on fine sandpaper.

Schacht_06 (fspg2)


Schacht_07 (fspg2)


Before the parts can be glued into the shaft, I want to treat them with color now.

Schacht_08 (fspg2)

fspg2, It is always a pleasure to see and read about your progress with this project.

Frithjof, if you are going to show off such beautiful brick walls and brass ladders, it is only fair that you also make them for the rest of us. -- ssuR

Thank you Bill!

Thanks Russ, but then I'm sure I'll never be finished with all my many projects.


In the last days I could do only little, so today comes only a small update.

On the inside of the only indicated side wall of the inspection chamber, I sawed a 1.0mm wide slot diagonally to get a secure guide for the curved back wall.

Schacht_09 (fspg2)


Before final installation in the module, the inspection shaft is glued together as a complete unit with wood glue. In the process, I discovered that the left side wall, where the ladder will later be mounted, was unfortunately milled 1.0mm too narrow.  Although I had taken the right number of stones, I hadn't considered the outward slanting to the round main shaft.

So I milled a small wall strip from 1.0mm waterproof aircraft plywood and glued it to the slanted side. After a slight overhang was adjusted to the wall surface with a sandpaper file, a 0.5mm thick saw blade helped to cut the wall joints free.
After painting, the transitions will no longer be visible.

Schacht_12 (fspg2)


The 1.0mm holes for fixing the ladder are still missing.

Schacht_13 (fspg2)



A few more small parts milled from MDF, should show the wall structure in the visible area of the shaft - more about that later.

Schacht_10 (fspg2)


Schacht_11 (fspg2)

First of all, a peaceful and healthy New Year 2024 to everyone!

Today I'm going to tell you a little about why I haven't posted a report here since April 2023.

After my control card for the CNC milling machine failed three times in a row and Steffen was able to repair it twice, three new output stages were installed in a second control box in February. After that, everything worked as usual for the last four years, until the software suddenly started giving error messages and stopped in the middle of the milling process.

Now began a somewhat annoying troubleshooting process to find the cause.
Dozens of milling passes (1 cm above the milling plate) were carried out, whereby the various possible sources of interference were switched off one after the other (cooling water pump of the spindle, LED lighting for the milling cutter, height sensor, vacuum cleaner, ...) - unfortunately the error message came up again and again.
      

USB_Fehler (fspg2)


Steffen (he helped me a lot with the installation of the CNC router) then asked whether the power cable and the USB cable from the computer to the control box were housed in a common cable duct and could thus generate interference signals.... 

That was the case - although no error has occurred in recent years... - but why all of a sudden now?

So a new cable duct was laid to separate the power and USB cables.

At the same time, a 15m LAN cable was laid through three rooms to get the data from the server to the milling computer. Until now, I had been using the WLAN network.

Now I was curious..... Trial milling operations with cutter/drill changes in the air were now carried out without any problems. 

... until I looked at the milling machine again after about 30 minutes: The test milling job had been completed as usual, the milling spindle had been moved to the rest position, the vacuum cleaner had been switched off...

...and a new error message appeared: "NO RETURN MESSAGE"

The software no longer allowed any movement. Only after a restart could I continue.
After another attempt ended the same way, I gave up in frustration       


As I was and still am very busy with long renovation work on our house, the hobby took a back seat for the time being.


After I had milled out the last parts for the lift bridge shaft in April, the milling machine didn't want to continue.

Schacht_14 (fspg2)


Schacht_15 (fspg2)




Since then I have  made a few drawings for the boom of the Münzel crane only.

Getriebe_Ausleger_03 (fspg2)


Getriebe_Ausleger_04_1 (fspg2)


Getriebe_Ausleger_05 (fspg2)


Getriebe_Ausleger_06 (fspg2)


Getriebe_Ausleger_09 (fspg2)


Getriebe_Ausleger_10 (fspg2)


Getriebe_Ausleger_11 (fspg2)



The boom was raised and lowered using a rack and pinion, which was protected against the weather by interlocking (sliding ?) protective tubes.
There was a double rack and pinion variant on this larger crane: former crane in Dortmund
As the mechanics of this crane were located inside the housing, there were no telescopic protective tubes here.

Initially, I wanted to use the green pulley on the gearbox shown in my previous design for a drive chain (or rope?) between the gearbox and the drive motor in the crane housing. A model could be here: Kran Hamburger-fotoarchiv.de
Unfortunately, I don't have any other pictures that document this function in more detail.

In the later version shown below, I still have no idea what function this box on the left of the gearbox had... was an electric motor hidden here


Muenzel_Kran_LEA_02 (fspg2)

Münzel-Kran_Lauenburg (Copyright W.Hinsch-LEA)


Getriebe_Ausleger_08 (fspg2)

Münzel-Kran_Lauenburg (Copyright W.Hinsch-LEA)


Here is another picture of the crane (older condition) without side box but with an upper black block (tube ?).
The function is also unknown to me.

Getriebe_Ausleger_07 (fspg2)

Münzel-Kran_Lauenburg (Copyright W.Hinsch-LEA)


Back to troubleshooting (NO RETURN): Between the holidays, I had another idea:
I started the milling computer and deactivated the WLAN connection - after all, there is a LAN cable.
Another milling attempt in the air was made without any further problems now  ... and after a long wait: no more error messages either.
In the next few days I will hopefully be able to start a proper milling and then get some milling work done that has been a long time coming.

Happy New Year!

The mill machine problems sound very frustrating. Hope it is finally corrected and you can continue the project.

I don't have any equipment with electronic controls, just manually operated small hand tools and sometimes I also get 'mental error messages' that are difficult to track down and correct    .

Yes, repair or replace the mill so you can resume work on the model. I understand your frustration. When the laser broke in the middle of cutting the parts for my last model, I nearly threw everything into the trash. (Hmm. Maybe that wasn't such a bad idea ....) -- Russ

Quote from: fspg2 on January 01, 2024, 08:39:58 AMBack to troubleshooting (NO RETURN): Between the holidays, I had another idea:
I started the milling computer and deactivated the WLAN connection - after all, there is a LAN cable.
Another milling attempt in the air was made without any further problems now  ... and after a long wait: no more error messages either.
In the next few days I will hopefully be able to start a proper milling and then get some milling work done that has been a long time coming.

I really hope you have found a permanent solution to your printer troubles!
Best wishes for a productive new year!

I understand your frustration. That is the disadvantage of CNC machines. Unless you are an electrical specialist, you are relatively helpless in the face of the problem. I hope you find the error soon, because we are eagerly awaiting further progress on the project!

Bernhard

Thank you very much for your sympathy!

In 2012-02-26, I had milled the four support brackets for the roof structure. However, at the time I hadn't thought about how I could mount these four blocks on the roof precisely aligned... :?:  :?:  :?:

Even though the milling machine is still a bit of a pain at the moment, yesterday I milled out four auxiliary supports for the Münzel-crane from 1.5mm MS58.

These auxiliary supports ensure precise alignment to the side and in height.


Hilfsspanten_Aufbauträger_01 (fspg2)


Hilfsspanten_Aufbauträger_02 (fspg2)


Hilfsspanten_Aufbauträger_04 (fspg2)


Hilfsspanten_Aufbauträger_06 (fspg2)


Two frames were soldered together with 1.0 mm brass wires at 5.0 mm intervals. The protruding wire ends were cut off and the surfaces sanded smooth on a sandpaper board. Two 1.5mm wide grooves were milled into the underside of each of the four support brackets at the appropriate distance and hard-soldered to the frame.

Hilfsspanten_Aufbauträger_07 (fspg2)


These units are mounted from below, so that the four carrier supports, inserted through the four roof openings, are already correctly positioned.

In the following two pictures, the parts are loosely inserted for testing and still need to be soldered.

Hilfsspanten_Aufbauträger_08 (fspg2)


Hilfsspanten_Aufbauträger_09 (fspg2)