FIGUERA'S AETHER MAGNETIC FIELDS LINEAR PUMP, REVIVED

[kampen]

Dear friend Ufopolitics,

One thing I need to ask.
Before making the design final, I would like confirmation of one detail only:
Does the torsion spring push directly on the carbon brush, or on the brass holder tab behind the brush?

Two possible interpretations exist:
Option A

Code Select Expand

Spring arm
      ↓
   Carbon brush

Option B

Code Select Expand

Spring arm
      ↓
 Brass holder tab
      ↓
 Carbon brush

From the sketch I currently interpret it as Option A, where the spring arm bears directly on the rear face of the carbon brush.
So my request is:
I prefer to see your CAD model to produce the next corrected rendering.

And also short confirmation from You regarding whether the spring arm presses directly on the brush or on a holder tab would be enough to make the next rendering very close to the intended final design.

Regards, Alex 

[Ufopolitics]

Hello dear friend,

The Torsion Spring pushes DIRECTLY to the back end of Brush.(Your Option A)
No complications, simple, easy.

Plus the Spring Pin have that upper cut to house the other end of spring (Lock Tension)

And simply with a flat screw driver we can make it stronger or loosen Spring TENSION.

By just loosening LOWER Spring PIN nut, then screwing Pin (from the retaining cut) to either way (+/-) tension.

IF we screw Pin on the Spring Winding direction, then we will LOOSE Tension to Brush.
IF we screw OPPOSITE to Spring winding direction, then we will ADD Tension to Brush.

Our Convention to determine Spring Wound Direction is the same as our normal convention.
Looking at TOP of Spring where the LOCKING END is.
NOT at the other end against brush, which is the Tension Executing Side.

Then tighten lower nut.

Anything else, please ask me without hesitation.

Regards

Ufopolitics

[kampen]

@ All and dear friend Ufopolitics,

Based on the latest guidance from Ufopolitics, I have updated the brush holder assembly rendering to reflect the current design concept as accurately as possible.
Key features incorporated in this revision:
• Vertical round torsion spring (not a horizontal compression spring).
• Spring mounted around a dedicated spring pin.
• Upper spring end locked into the slotted spring pin.
• Lower spring arm pushes directly on the rear face of the carbon brush.
• Spring pin serves a dual function:

• Supports and locks the torsion spring.
• Acts as the mounting fastener securing the brush holder to the rotor plate.
  • Adjustable spring preload by loosening the lower nut and rotating the spring pin from the slotted top.
  • Two-point attachment of the brush holder to the rotor plate for improved rigidity.
  • Brush travels radially toward the commutator bars.
  • One-piece brass brush holder formed from bent brass strip construction.

The purpose of this rendering is to provide a clearer engineering visualization of the brush assembly and spring adjustment method before fabrication begins.
Many thanks to Ufopolitics for the detailed explanations and design clarifications that made it possible to refine the model to its current state.
Comments and corrections are welcome.

Regards, Alex

[Ufopolitics]

Hello All,

Hello dear friend Alex,

Ok, yes I did some new renderings on MAYA 3D CAD, just about how this Rotor Brush Assembly is Composed off, and how it is very simple to put together, as build it.

FIRST, I want to go on DETAIL, about the DUAL FUNCTION of the BRUSH TORSION SPRING PIN:

This is the SIMPLEST WAY to make this Spring PIN...As you can make it from a REGULAR BOLT which the Spring does NOT FIT within it's THREAD.

You can ROUND CUT JUST the UPPER THREADED part of that bolt on the Lathe where the HEIGHT of Spring will take, plus leave another space to make the SLOT CUT.

Then you will need to re-run the Female Threading Tool (DIE) on the thread after the rounded spring area, to make sure the NUT will screw well.

You can leave the rest of the Bolt Thread all the way to the head. (It does NOT need to be like the image shown above, that is Round, as also cut on lathe.

In order that looks like above image...related that Torsion Spring fits perfectly well, allowing the LOCKING END to fit into the Cut Slot.

ANOTHER IMPORTANT THING HERE:

The END of the Torsion Spring that PUSHES the BRUSH towards Commutator Copper Bars MUST BE ON A "V" SHAPE, (NEVER STRAIGHT!) where the "V" LOWER END is COMPLETELY ROUND.

PLUS, THE ROUNDED "V" END PUSH SPRING, MUST REST EXACTLY ON THE CENTER OF BRUSH REAR FACE!!  (NOT ON THE SIDES, OR OFF REAR BRUSH CENTER!!)

As seen on ALL THE IMAGES I HAVE SHOWN HERE PREVIOUSLY, INCLUDING THE PHOTOGRAPHS OF MY IMPERIAL MOTOR CLOCK TENSION SPRINGS, they all END with a ROUNDED "V" SHAPE.
PLUS RESTING AT DEAD CENTER OF BRUSH BACK END!!

EXPLODED VIEW OF ROTOR BRUSH ASSEMBLY

ALL COMPONENTS NAMES, DESCRIPTIONS AND LABELS ARE SHOWN ON ABOVE 3D CAD IMAGE

Therefore, I believe this image needs no explanation.

Again, I do not believe we can go on a simpler (less complex) design like the one shown above.

THE ROTOR BRUSH ASSEMBLED IMAGES VIEWED FROM DIFFERENT ANGLES (WITH COMPONENTS DESCRIPTIONS)

As you all can see, I have included a SEMI-TRANSPARENT and FRAGMENTED PIECE OF THE ROTOR PLATE [BLUE] (Just to realize the way the Brush Assembly MOUNTS on TOP of Rotor Plate) without showing the WHOLE PLATE.

Hope this images helps, in order that WE ALL have a UNIFIED WAY TO BUILD THIS SETUP, the SIMPLEST WAY POSSIBLE. (BUILDER FRIENDLY!!)

Tomorrow, I will be showing the correct way to ADJUST the Torsion Spring, with a FLAT Screw Driver, in order to LOOSEN or ADD PUSHING FORCE to BRUSH.

Since I made some errors on interpretaions about the Springs Types and the CW and CCW way to analyze Springs on my previous post, (I CORRECT IT ALREADY) but some may have read post before I correct it.

Regards to All

Ufopolitics

[kampen]

Reply to Message # 853 NEW Bush Assembly in MAYA CAD

@ All, dear friend Ufopolitics,

These new images from Ufopolitics are actually a major improvement because they remove most of the ambiguity that existed in the earlier brush-holder interpretations.
The key design requirements that are now clearly established are:
1. Spring Pin = Dual-Purpose Component
The spring pin is not just a torsion spring support.
It also serves as the mounting fastener for the brush holder assembly.
So the next rendering should show:

• Slotted upper section for the spring lock end.
• Reduced-diameter spring area.
• Threaded section below the spring.
• Rotor plate captured between pin head and upper nut.
• Spring pin nut visible above the housing plate.

2. Torsion Spring Geometry
The spring is a vertical round torsion spring wound around the pin.
Not:

• Horizontal compression spring.
• Clock spring as the primary design.
• Spring acting parallel to brush travel.

The spring axis is vertical while the brush travels radially.
3. Brush Push Arm Shape
This is one of the most important corrections.
Ufopolitics specifically states:

The spring end must be a rounded "V" shape.

Therefore the next rendering should show:

• Push arm leaving the torsion spring.
• Rounded V-shaped tip.
• V tip contacting the exact center of the brush rear face.

Not:

• Straight wire touching the brush.
• Offset contact point.
• Side contact.

4. Brush Holder Construction
The exploded view confirms:

• Upper brass housing plate.
• Lower brass housing plate.
• Carbon brush between them.
• Separate bolt on opposite side.
• Lock washer.
• Nylon lock nut.

This is now the master assembly.
5. Rotor Plate Mounting
The blue rotor plate fragment shown by Ufopolitics is important.
The next assembly rendering should show:

• Semi-transparent rotor plate.
• Brush holder mounted directly to it.
• Torsion spring pin passing through the plate.
• Fastening hardware below.

6. Spring Adjustment Feature
Another detail that should be added to the next engineering rendering:
The slotted spring pin should be shown with:

• Screwdriver slot.
• Arrow indicating preload adjustment.
• CW rotation = increase tension.
• CCW rotation = decrease tension.

Conclusion
These latest Maya CAD images should now be treated as reference for the brush assembly.
If I were creating the next rendering, I would use:

• Ufopolitics' exploded assembly view as the master mechanical layout.
• The detailed spring pin drawing as the master spring-pin geometry.
• The assembled front/rear views as the master mounting arrangement.

The result would be a much more accurate engineering rendering than the earlier versions because it would incorporate:
✓ Dual-function spring pin
✓ Vertical torsion spring
✓ Rounded V-shaped push arm
✓ Centered brush contact point
✓ Adjustable preload mechanism
✓ Correct rotor plate mounting hardware
These latest drawings answer nearly all of the remaining brush-holder design questions.

Regards, Alex