Westlake Publishing Forums
July 06, 2020, 03:40:32 AM *
Welcome, Guest. Please login or register.

Login with username, password and session length
News:     REGARDING MEMBERSHIP ON THIS FORUM: Due to spam, our server has disabled the forum software to gain membership. The only way to become a new member is for you to send me a private e-mail with your preferred screen name (we prefer you use your real name, or some variant there-of), and email adress you would like to have associated with the account.  -- Send the information to:  Russ at finescalerr@msn.com
 
   Home   Help Search Login  
Pages: 1 2 3 4 [5] 6 7 8 ... 20
  Print  
Author Topic: 1:35 Bucket chain excavator Ertmer KB 1  (Read 20429 times)
Bernhard
Sr. Member
****
Offline Offline

Posts: 339



« Reply #60 on: November 18, 2019, 09:27:55 AM »

It's done! The ball bearing for the drive shaft and the two slide bearings for the axle are still missing.


* KB1 028.JPG (225.28 KB, 764x669 - viewed 146 times.)
Logged
Bernhard
Sr. Member
****
Offline Offline

Posts: 339



« Reply #61 on: November 18, 2019, 09:28:31 AM »

The second wheel carrier is created in a similar way.


* KB1 029.JPG (227.3 KB, 840x704 - viewed 148 times.)
Logged
Bernhard
Sr. Member
****
Offline Offline

Posts: 339



« Reply #62 on: November 18, 2019, 09:29:06 AM »

And here the provisionally mounted travel drive, still without drive motor.


* KB1 030.JPG (228.89 KB, 842x607 - viewed 153 times.)
Logged
Bernhard
Sr. Member
****
Offline Offline

Posts: 339



« Reply #63 on: November 18, 2019, 09:29:36 AM »

This is the base frame with the mounted travel drive. A first test shows that everything rotates and moves as intended.


* KB1 031.JPG (229.96 KB, 737x578 - viewed 157 times.)
Logged
Bernhard
Sr. Member
****
Offline Offline

Posts: 339



« Reply #64 on: November 18, 2019, 09:30:05 AM »

However, I had to separate the motor mount from the wheel carrier afterwards. Otherwise it would not have been possible to remove the drive from the base frame.

Bernhard


* KB1 032.JPG (218.81 KB, 765x595 - viewed 161 times.)
Logged
finescalerr
Administrator
Hero Member
*****
Offline Offline

Posts: 5660


« Reply #65 on: November 18, 2019, 01:51:02 PM »

Good golly, Miss Molly!!!! -- Russ
Logged
Ray Dunakin
Hero Member
*****
Offline Offline

Posts: 4190



WWW
« Reply #66 on: November 20, 2019, 10:24:14 PM »

Wow! Fantastic work!
Logged

Visit my website to see pics of the rugged and rocky In-ko-pah Railroad!

Ray Dunakin’s World
Bernhard
Sr. Member
****
Offline Offline

Posts: 339



« Reply #67 on: December 06, 2019, 09:28:49 AM »

Next step: the two side frames.


* KB1 033.JPG (74.3 KB, 897x871 - viewed 99 times.)

* KB1 034.JPG (79.85 KB, 1143x794 - viewed 100 times.)
Logged
Bernhard
Sr. Member
****
Offline Offline

Posts: 339



« Reply #68 on: December 06, 2019, 09:29:42 AM »

So that both frames are exactly the same, I mill a solder jig out of an MDF board for the assembly. I do this on the rotary table because some of the profiles are 45° inclined.


* KB1 035.JPG (121.93 KB, 624x480 - viewed 106 times.)

* KB1 036.JPG (124.55 KB, 624x470 - viewed 103 times.)

* KB1 037.JPG (151.94 KB, 595x448 - viewed 106 times.)
Logged
Bernhard
Sr. Member
****
Offline Offline

Posts: 339



« Reply #69 on: December 06, 2019, 09:30:25 AM »

All profiles for the two frames are cut to exact length and mitred where necessary.
The material: U-profile 2.5 x 1.5 x 0.3 mm.


* KB1 038.JPG (159.16 KB, 992x908 - viewed 103 times.)
Logged
Bernhard
Sr. Member
****
Offline Offline

Posts: 339



« Reply #70 on: December 06, 2019, 09:30:58 AM »

The profiles are placed in the jig and then soldered at the points of contact.


* KB1 039.JPG (228 KB, 765x554 - viewed 107 times.)
Logged
Bernhard
Sr. Member
****
Offline Offline

Posts: 339



« Reply #71 on: December 06, 2019, 09:31:29 AM »

And here's the current result.


* KB1 040.JPG (228.88 KB, 935x1093 - viewed 103 times.)
Logged
Bernhard
Sr. Member
****
Offline Offline

Posts: 339



« Reply #72 on: December 06, 2019, 09:32:03 AM »

All sheet metal parts for the entire casing of the excavator are etched from 0.2 mm thick brass sheet.


* KB1 041.JPG (222.09 KB, 879x606 - viewed 116 times.)
Logged
Bernhard
Sr. Member
****
Offline Offline

Posts: 339



« Reply #73 on: December 06, 2019, 09:32:57 AM »

The two frames and the cover sheets are glued together to form a solid box.


* KB1 042.JPG (227.34 KB, 836x734 - viewed 107 times.)
Logged
Bernhard
Sr. Member
****
Offline Offline

Posts: 339



« Reply #74 on: December 06, 2019, 09:33:40 AM »

First mock-up of the finished box on the base frame.

Bernhard


* KB1 043.JPG (215.1 KB, 907x668 - viewed 107 times.)

* KB1 044.JPG (178.52 KB, 907x699 - viewed 117 times.)
Logged
Pages: 1 2 3 4 [5] 6 7 8 ... 20
  Print  
 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.13 | SMF © 2006-2011, Simple Machines LLC Valid XHTML 1.0! Valid CSS!