Creating a User-Friendly D-Hole for Mounting a DC Motor Shaft

  • Thread starter Thread starter flux110
  • Start date Start date
  • Tags Tags
    Fitting Shaft
Click For Summary

Discussion Overview

The discussion revolves around the challenge of creating a user-friendly "D-hole" in a solid 6mm steel shaft for mounting a DC motor shaft. Participants explore various methods to achieve this without access to industrial tools, considering the practicality and efficiency of different approaches.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested
  • Experimental/applied

Main Points Raised

  • Flux110 seeks suggestions for creating a "D-hole" in a steel shaft, mentioning the use of a neodymium magnet for easy attachment and removal.
  • Q_Goest questions the necessity of the magnet and suggests an alternative of creating a round hole with a set screw on the flat spot of the motor shaft.
  • Flux110 clarifies that the magnet is intended to prevent the shaft from dropping off and to facilitate a quick attachment system.
  • Another participant proposes drilling a hole for the motor shaft and tapping a hole for a set screw, but Flux110 expresses concern about the time required for this method.
  • Flux110 reiterates the need for a user-friendly solution, emphasizing the preference for a direct "D-hole" insertion method.
  • A suggestion is made to consult an RS catalogue for potential mechanical options that could simplify the process.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the best method to create the "D-hole." There are competing views on the practicality of using a set screw versus a direct "D-hole" approach, and the discussion remains unresolved regarding the optimal solution.

Contextual Notes

Participants express uncertainty about the feasibility of different methods due to the lack of access to industrial tools and the need for a quick attachment system. The discussion highlights the limitations of available techniques and tools for achieving the desired design.

Who May Find This Useful

Individuals interested in mechanical design, DIY projects, or those facing similar challenges in creating custom mounts for motors may find this discussion relevant.

flux110
Messages
4
Reaction score
0
Hi,

I have a DC motor that have these dimensions: http://www.micromotorssrl.com/motor_l149/L149.pdf and the problem that i have is to make the "D-hole" in a solid 6mm steel shaft. At the bottom of the hole i was planing to put a neodymium magnet so that you easily could remove and put back the shaft. I don´t have access to industrial tools.

Anyone have any smart suggestions how to do this o anyther fast way to mount the shaft? Is the only way to do it to mold it?

Best Regards,
Flux110
 
Last edited by a moderator:
Engineering news on Phys.org
Hi flux,
flux110 said:
the problem that i have is to make the "D-hole" in a solid 6mm steel shaft. At the bottom of the hole i was planing to put a neodymium magnet so that you easily could remove and put back the shaft.
this isn't clear to me. Do you have a motor with a shaft that has a flat spot on it as shown in the link? Are you trying to put a D shaped hole into a pully or something so the motor can drive it? Not sure what the magnet is for either. If you're trying to make a D shaped hole, the easy thing to do would be to make a round hole and put a set screw on the flat spot. Maybe you can elaborate on what it is you're trying to do.
 
Hi Q_Goest,

So i have a a motor with a shaft that has a flat spot on in as shown in the .pdf.
And now i want to make a shaft to connect to the motorshaft that has the dimensions of the attached picture. But the problem is how to make the "D-hole" without to mold it from scratch or an exspensive industrial laser?

The magnet in the bottom of the "D-hole" is so that the shaft won't drop of when it is connected to the motorshaft in a vertical position and also because its a fast attach system with no screws or nuts.


"If you're trying to make a D shaped hole, the easy thing to do would be to make a round hole and put a set screw on the flat spot." Didin´t really understod what you meant by this, could you explain more i detail?
 

Attachments

  • Shaft.jpg
    Shaft.jpg
    6.9 KB · Views: 603
Can you drill a hole for the motor shaft to be inserted into, then drill and tap another hole at 90 degrees for a set screw? See attached.
 

Attachments

That would work but i don't want it that way it will take to long to add and remove the shaft..
It has to be "user friendly" that's why id like to just have a D-hole to insert it to
 
flux110 said:
That would work but i don't want it that way it will take to long to add and remove the shaft..
It has to be "user friendly" that's why id like to just have a D-hole to insert it to

It may be best for you to get hold of an RS catalogue (mechanical volume), once you have one you can see what your options are.
 

Similar threads

Optimizing D-Shaped Shaft and Hole Fit for DC Motor and Impeller Operation
  • · Replies 4 ·
Replies
4
Views
3K
How Can I Safely Extend the Shaft of My Motor for Encoder Installation?
  • · Replies 6 ·
Replies
6
Views
2K
How Do I Mount a Keyed Bore Roller Pinion to a DC Motor?
  • · Replies 4 ·
Replies
4
Views
1K
Simple Mechanics Project: How to Secure a Gear Shaft for Load-Bearing Use
  • · Replies 6 ·
Replies
6
Views
2K
How to Motorize a Stiff TV Mount with Swivel Arm Joints?
  • · Replies 9 ·
Replies
9
Views
2K
DC motor mounted on a glider which slides linearly on a frictionless surface
  • · Replies 15 ·
Replies
15
Views
5K
What is the nominal power of a domestic universal motor?
  • · Replies 1 ·
Replies
1
Views
3K
Automotive, Holes Subframe etc., Purpose (not for Fastener Access)?
  • · Replies 4 ·
Replies
4
Views
2K
Calculating Hydraulic Motor Requirements for Plant-Pulling Device
  • · Replies 1 ·
Replies
1
Views
2K
Keyed serpentine pulley with a 5/8 bore to mount on a motor
  • · Replies 3 ·
Replies
3
Views
4K