Setup Design to rotate the work piece in DIE sinking EDM process?

Click For Summary

Discussion Overview

The discussion focuses on designing a setup to rotate a workpiece in the Die Sinking EDM (Electrical Discharge Machining) process. Participants explore various aspects of the design, including mechanical specifications, power requirements, and the integration of electrical components.

Discussion Character

  • Technical explanation
  • Debate/contested
  • Experimental/applied

Main Points Raised

  • One participant seeks assistance in simplifying their design for rotating a workpiece in the Die Sinking EDM process.
  • Several questions are posed regarding the workpiece's size, weight, rotation axis, required rotation rate, power source, type of electrolyte, and current specifications.
  • Another participant suggests using carbon brushes to carry the EDM current past the bearings and emphasizes the need for accurate bearings in the rotary table design.
  • Concerns are raised about the need for a lip seal against the electrolyte and the potential requirement for a support shaft from below the workpiece.
  • Participants inquire about the specific make and model of the EDM machine and the initial design proposed by the original poster.

Areas of Agreement / Disagreement

Participants have not reached a consensus, as multiple viewpoints and technical considerations are presented without resolution. The discussion remains open to further input and refinement of ideas.

Contextual Notes

Participants have not fully addressed the implications of the EDM current return method and its impact on the rotation support bearings. Additional assumptions about the design's feasibility and integration with existing equipment remain unresolved.

IamDev
Messages
7
Reaction score
0
I need to design a basic setup to rotate the workpiece in Die Sinking EDM Process. I made some design but they were complicated and were not easy to fabricate so I need someone who can help me.
 
Engineering news on Phys.org
Firstly, welcome to PF.
Now the questions.
1. How big is the workpiece? What does it weigh?
2. Will it rotate about the vertical axis?
3. What rotation rate is needed?
4. How will the rotation be powered?
5. What electrolyte is being used?
6. Is the rotation a controlled reciprocating motion or continuous?
7. What maximum EDM current will be used?
8. How will the EDM current return without damaging the rotation support bearings?
 
Baluncore said:
Firstly, welcome to PF.
Now the questions.
1. How big is the workpiece? What does it weigh?
2. Will it rotate about the vertical axis?
3. What rotation rate is needed?
4. How will the rotation be powered?
5. What electrolyte is being used?
6. Is the rotation a controlled reciprocating motion or continuous?
7. What maximum EDM current will be used?
8. How will the EDM current return without damaging the rotation support bearings?
Thanks for the reply.
1. Size of workpiece is about 3-4cm in diameter and thickness is about 1 cm (mild steel) and weight will be in between 160-200gm.
2. Rotation should be about vertical axis.
3. Rotation rate range is 100rpm to 150 rpm
4. Rotation should be powered bu DC Motor.
5. Servo EDM oil will be used as electrolyte.
6. Rotation will be continuous.
7. Max EDM current will be 30A
8. This Part I don't know.
.
 
Carbon brushes could carry the EDM current past the bearings.

The rotary table will need accurate bearings. Preferably two spaced on a shaft or one of a large diameter.

Is there access from below for a shaft to support and rotate the work piece? It would need a lip seal against the electrolyte. If there is a fixed base in the electrolyte tank, what distance is it from base to electrode.

What is the make and model of the machine?

What design did you come up with for the rotator?
 

Similar threads

Designing a controller for cooling of heat exchangers
  • · Replies 6 ·
Replies
6
Views
2K
Designing a Geneva Mechanism: Overcoming Challenges
  • · Replies 5 ·
Replies
5
Views
4K
Comparing Die Sinking EDM Performance on Copper, Aluminum, and Steel
  • · Replies 2 ·
Replies
2
Views
2K
How can I get my prototype made?
  • · Replies 3 ·
Replies
3
Views
2K
Very preliminary thoughts on a recoil reducing gun
  • · Replies 5 ·
Replies
5
Views
2K
Looking for ideas for a propane burner design
  • · Replies 4 ·
Replies
4
Views
2K
Help with designing a tool to hold a work piece (work piece jig)
  • · Replies 9 ·
Replies
9
Views
2K
Design Tool for Compression Testing of Small Samples
  • · Replies 3 ·
Replies
3
Views
2K
Designing Impact Force Test Rig for Material Strength Testing
  • · Replies 16 ·
Replies
16
Views
3K
Help Understanding Rubber Bushing Lubrication please
  • · Replies 6 ·
Replies
6
Views
4K