This post is partly a call for "testers" : I have created a spreadsheet to calculate the mandrel diameter needed to wind a spring of specified diameter and wire type. The spreadsheet is based on Design and Wind Your Helical Springs by Kozo Hiraoko (Part 1 page 20 Home Shop Machinist 1987 May-Jun, part 2 page 30 Home Shop Machinist 1987 Jul-Aug). I believe the spreadsheet is correct, but I am requesting the following:
Here is the link to the spreadsheet and related information:
https://sites.google.com/site/lagadoacademy/machining---lathes-mills-etc/tools---spring-making
- Try the link below - make sure you can access and use the spreadsheet
- If possible, verify that the spreadsheet results conform to your own experience in spring making
- I based the spreadsheet on a not very good copy of the article cited - if anyone can provide me with a high resolution copy of the article (or even just the graph for finding k value), I would appreciate it.
Here is the link to the spreadsheet and related information:
https://sites.google.com/site/lagadoacademy/machining---lathes-mills-etc/tools---spring-making