Author Topic: Bruce Macbeth Engine, European Version  (Read 9909 times)

Offline fumopuc

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Re: Bruce Macbeth Engine, European Version
« Reply #90 on: July 06, 2019, 03:15:34 PM »
Hi everybody, some little progress with the next part for this engine.
In the drawing it is called shaft locator, it is sitting close to the middle crank shaft bearing and is responsible to keep one lower bevel gear in position.
Material is steel and it was time now to make the CAM program for my very first CNC milled steel part.
I have been very carefully scary about it, so the mill toolpaths were defined in 0,5 mm steps only.
The result was o.k. until I have seen the small pocket which was milled in second program step with a 4 mm 4 flute cutter.
The pocket does not look like the one at the drawing.
All this was done last Sunday and the outside and inside temperature has been over 34░ C so I have been in evening not in the failure analysis mood anymore.
Kind Regards
Achim

Offline fumopuc

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Re: Bruce Macbeth Engine, European Version
« Reply #91 on: July 06, 2019, 03:27:10 PM »
This morning I have done a new set up of the part at the CNC mill and checked some dimensions.
The big and small bore seems to be correct, also the outer shape.
Something had happened with the Y WCS, it was moved by nearly 1,5 mm for the operation of this little pocket.
Reason:
Overheated operator at the CNC mill ?
To much or not enough cool bear at these days in the shop fridge ?
At the end I have repeated the CAM operation for this small pocket with the right WCS today and it does looks like at the drawing now.
Kind Regards
Achim

Offline fumopuc

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Re: Bruce Macbeth Engine, European Version
« Reply #92 on: July 16, 2019, 08:19:38 PM »
Hi everybody, some more parts and another visibly motion.
I know only small steps but progress is progress in my understanding even if it is very slowly.



Kind Regards
Achim

Offline Admiral_dk

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Re: Bruce Macbeth Engine, European Version
« Reply #93 on: July 16, 2019, 08:41:21 PM »
Quote
I know only small steps but progress is progress in my understanding even if it is very slowly.

Amen to that  :ThumbsUp:

Offline gbritnell

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Re: Bruce Macbeth Engine, European Version
« Reply #94 on: July 16, 2019, 11:22:10 PM »
It doesn't matter how slow the progress is the work is outstanding.
gbritnell
Talent unshared is talent wasted.

Offline Tonyr

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Re: Bruce Macbeth Engine, European Version
« Reply #95 on: July 17, 2019, 07:21:57 PM »
Hi Achim,

That is looking really good.
Very impressive.

Tony

Offline fumopuc

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Re: Bruce Macbeth Engine, European Version
« Reply #96 on: August 05, 2019, 07:54:57 PM »
Per, George , Tony thanks for watching.


A bit progress with the gear train.
The drive train starts at the crank shaft but I do not have a crank shaft at the moment, so my dummy shaft was prepared with a bush with flange for a temporary fixation of the drive gear. All further action will be seen best in the following pictures.

« Last Edit: August 05, 2019, 07:59:47 PM by fumopuc »
Kind Regards
Achim

Offline fumopuc

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Re: Bruce Macbeth Engine, European Version
« Reply #97 on: August 05, 2019, 07:56:58 PM »
..and the next load.

Kind Regards
Achim

Offline fumopuc

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Re: Bruce Macbeth Engine, European Version
« Reply #98 on: August 05, 2019, 07:58:12 PM »
.. finally some motion.




Kind Regards
Achim

Online crueby

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Re: Bruce Macbeth Engine, European Version
« Reply #99 on: August 05, 2019, 08:05:19 PM »
Excellent, nice smooth engagement.   :popcorn: :popcorn: :popcorn:

Offline Don1966

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Re: Bruce Macbeth Engine, European Version
« Reply #100 on: August 05, 2019, 10:16:46 PM »
Very impressive Achim nice and smooth!


 :cheers:
Don

Offline Roger B

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Re: Bruce Macbeth Engine, European Version
« Reply #101 on: August 06, 2019, 06:54:32 PM »
Nicely done  :ThumbsUp:  :ThumbsUp: What is the boring bar you are using in picture 33?
Best regards

Roger

Offline fumopuc

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Re: Bruce Macbeth Engine, European Version
« Reply #102 on: August 06, 2019, 09:18:25 PM »
Nicely done  :ThumbsUp: :ThumbsUp: What is the boring bar you are using in picture 33?


Hi Roger,
try an eBay search with Horn Super Mini R105.
You will find some used ones for very small money.


https://youtu.be/78XYpr2Vnvg
« Last Edit: August 06, 2019, 09:52:16 PM by fumopuc »
Kind Regards
Achim

Offline fumopuc

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Re: Bruce Macbeth Engine, European Version
« Reply #103 on: August 06, 2019, 09:20:56 PM »
Chris, Don thanks for watching.
Kind Regards
Achim

Offline fumopuc

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Re: Bruce Macbeth Engine, European Version
« Reply #104 on: August 18, 2019, 10:50:52 AM »
Hi everybody,
some progress with the pedestal.
Some AW 5083 aluminium, some good cutters and a lot of chips.
I am very happy that I can use the CNC mill for this kind of job.



Kind Regards
Achim