Thanks: 0
Likes: 0
Needs Pictures: 0
Picture(s) thanks: 0
Results 1 to 1 of 1
-
25th September 2022, 07:11 PM #1Most Valued Member
- Join Date
- Aug 2015
- Posts
- 4,432
Vertex Rotary Table - Inaccurate index
If you set say 0 degrees at the side index mark on your new Vertex rotary table when using it with the table vertical, like this...
HV6-5-30%.jpg
Wouldn't you be a little surprised to see the reading below (267 degrees) on the extended vertical centre-line at the top, i.e. 93 degrees different instead of the expected 90 degrees?
HV6-3-30%.jpg
Note; I have scribed the lines across the data plate to show the extended vertical centre-line that passes back down across the large flat base base of the unit as an easy second reference when using the r/t in this way. Also confirmed with a dial gauge sweeping the edge of the table.
The posed picture below shows that I took these lines north/south & east/west through the centre of the base & 'round the corner' so to speak to the right...
HV6-8-30%.jpg
To find that the index plate was about 3 degrees misaligned as below (no surprise).
HV6-2-30%.jpg
Easy fix - move the plate up.. But no, there is insufficient room because the main body casting gets in the way directly above & filing out the slots in the plate would leave little metal for the lower screw to grip on. Re-drill & tap new screw holes about 4mm higher? Same problem due the casting.
Solution; Make a new asymmetric index plate as below.
HV6-1-30%.jpg
Which gives the desired 270 result up top...
HV6-7-30%.jpg
My question is; has any one else on this forum seen this issue?
It is not a problem if you are just using the table in one plane, but if you mix & match horizontal & vertical use plus index lines as I did at that time (Not good practice perhaps?) on a part & then notice later that surfaces or drillings are not at true right angles, it could be a bother. Or worse! Bad language or spanner chucking...
Anyway, it was fixed a good while ago & no problems since.
Attached Images
- HV6-7-30%.jpg (153.1 KB)
- HV6-5-30%.jpg (93.0 KB)
- HV6-3-30%.jpg (117.8 KB)
- HV6-8-30%.jpg (102.0 KB)
- HV6-2-30%.jpg (152.0 KB)
- HV6-1-30%.jpg (117.5 KB)
Read the full thread at metalworkforums.com...
-
25th September 2022 07:11 PM # ADSGoogle Adsense Advertisement
- Join Date
- Always
- Posts
- Many
Similar Threads
-
Vertex Rotary Table - HV-6
By MWF FEED in forum METALWORK FORUMReplies: 0Last Post: 19th December 2020, 09:30 PM -
Vertex Rotary Table
By Stustoys in forum METALWORK FORUMReplies: 11Last Post: 16th March 2011, 12:54 PM -
Tailstock for Vertex Rotary Table
By Big Shed in forum METALWORK FORUMReplies: 10Last Post: 6th December 2010, 08:41 PM -
Vertex 6" Rotary Table Chart
By wannabe in forum METALWORK FORUMReplies: 1Last Post: 12th December 2008, 01:42 PM