By continuing to use this site, you agree to our use of cookies. Find out more
Forum sponsored by:
Forum sponsored by Allendale Jan 24th

Rotary table problem

All Topics | Latest Posts

Search for:  in Thread Title in  
Michael Garbutt 105/08/2016 19:50:46
51 forum posts
2 photos

Hi i have just bought a new rotary table from a reputable company. Iv just got it out of the box and im sure it should move more freely than this. What do you think ? should i contact them and ask questions ?

**LINK**

not done it yet05/08/2016 20:00:21
4503 forum posts
16 photos

Are the locking 'devices' free or tight?

Michael Garbutt 105/08/2016 20:09:16
51 forum posts
2 photos

They are free. I have removed them altogether even . Its even the same when the worm drive is disengaged from the table. the table will move freely but the handle/shaft is as tight as

Sam Longley 105/08/2016 20:37:04
742 forum posts
26 photos

I have that model & it was tight until I got the hang of the locking mechanism. Sitting in my armchair i cannot recall exactly how I freed it but it now runs smoothly after i fiddled with the locking mechanisms. I think one was not actually releasing. Try tapping the head of the release screw when it is slackened off. From memory it was all gummed up with dried oil or protective grease. I washed it all in turps.

SillyOldDuffer05/08/2016 20:46:45
5631 forum posts
1157 photos

My table appears to be the same as yours and it's fine.

The problem may be the position of the black lever coaxial with the dials. On mine full right disengages the drive and full left engages it. There's a point just before full left where the drive engages but the table is very stiff. The lever feels as if it's hit the end-stop but it's fibbing. Your video shows the lever just about in the position where my table stiffens up. Try pushing the lever harder to the left.

Fingers crossed,

Dave

Michael Garbutt 105/08/2016 20:56:41
51 forum posts
2 photos

I know what wrong with it now . And its nothing to do with locking leavers or anything like that . The shaft with the screw on must be bent or ground incorrectly . its binding inside the outer part.

 

Edited By Michael Garbutt 1 on 05/08/2016 21:01:49

Michael Garbutt 105/08/2016 21:33:58
51 forum posts
2 photos

Gonna call the shop on monday as they arnt open on a Saturday

SillyOldDuffer05/08/2016 22:02:57
5631 forum posts
1157 photos

I'm sure they'll change it, but how annoying!

John Reese06/08/2016 21:03:09
836 forum posts

I used to have a Grizzly super spacer that had a similar problem. I played with the eccentric that controls worm engagement. I managed to get it to work freely when turning counterclockwise but it continued to bind when turning clockwise. I think the problem related to a small diameter shaft on the worm allowing it to deflect ans bind on the gear. Never did et the problem resolved before I sold it.

paul rayner07/08/2016 00:34:13
145 forum posts
40 photos

Hello all

I've used my rotary table for the first time today on my mill and I was quite alarmed how much the table juddered about. I ended up pushing down the clamps whilst rotating the table at the same time. surely this can't be normal? its a vertex table the x y & z were all locked down it was the rotary top that was jigging back and forth. any thoughts?

regards

paul

Simon Collier07/08/2016 01:08:00
avatar
338 forum posts
55 photos

I returned a new 4" Vertex rotary table and got another one. I think the shaft was bent. The undamaged replacement has been a joy.

Roger Head07/08/2016 09:53:50
209 forum posts
7 photos

@ paull rayner

Paul, the lever that swings the worm in/out of engagement with the main gear must be in the fully-engaged position. If it isn't, then the degree of disengagement creates increasing amounts of backlash and the table can then thrash around under the influence of the cutter. My Vertex tends to move (*very* slightly) away from full engagement as I am using it, and it's now second nature for me to keep tapping it to make sure I don't run into trouble.

Roger

paul rayner07/08/2016 14:09:03
145 forum posts
40 photos

Roger

Thanks for that, It's one I picked up somewhere or other some time ago, like you do and never got round to using it. I had a quick look and the leaver spun round 360 deg so I nipped up the grub screw but it only moves very slightly 2 or 3 deg unlike the 20 deg marked on the dial. I think I will leave it till next weekend when I have more time and strip it down because I think something is not just quite right. Any further suggestions from the collective welcome in the meantime.

Thankyou again

Regards

Paul

Michael Garbutt 108/08/2016 19:17:06
51 forum posts
2 photos

Called them today at 8.30 and they are really apologetic and will get some one to look at my video straight away as it should not be as i describe. They would be in touch as soon as they look at it. So i wait till just before 5pm before calling them back as iv heard nothing, and they havent had time to look at the video as they are really busy this week preparing for an open day this weekend.

hmmm

Edited By Michael Garbutt 1 on 08/08/2016 19:17:50

David Taylor09/08/2016 02:42:24
avatar
128 forum posts
39 photos

I have a Vertex rotary table and it has a tight spot in the worm. I only discovered it last week as I usually use it freehand. Shop is too far away to return it anyway

I think I got a bad batch when I bought my workshop 40th birthday present - lathe leaked all the oil out from everywhere, milling machine gear shaft has a sticking keyway meaning you get stuck between gears, and the rotary table has a tight spot. I guess you get what you pay for, and I paid for Chinese and Indian cheap iron.

Michael Gilligan09/08/2016 08:13:33
avatar
15478 forum posts
668 photos
Posted by Michael Garbutt 1 on 08/08/2016 19:17:06:

Called them today at 8.30 and they are really apologetic and will get some one to look at my video straight away as it should not be as i describe. They would be in touch as soon as they look at it. So i wait till just before 5pm before calling them back as iv heard nothing, and they havent had time to look at the video as they are really busy this week preparing for an open day this weekend.

hmmm

.

dont know hmmm, indeed

Too busy to look at a 42 second video, to help a disappointed customer.

... Maybe too busy selecting some items that are good enough to let prospective buyers handle.

MichaelG.

JasonB10/08/2016 09:48:40
avatar
Moderator
17849 forum posts
1954 photos
1 articles

Having just had mine apart (see other RT thread) you may want to check that the preload on the thrust bearing is not too high.

If you look from below there is likely to be a collar that screws on to set the preload, loosen the cap head spreader screw and use two pins in teh holes to unscrew the collar a little and see if that eases things. If so nip it up to give a good feel and then tighten the spreader screw again.

dsc01378.jpg

KWIL10/08/2016 10:50:17
3216 forum posts
63 photos

Never did like that method of locking the collar. If the collar is a sloppy fit when loosened, the cap head spreader screw tends to cause axial movement on one side, (ie tilt), pressing the thrust bearing unevenly.

JasonB10/08/2016 13:12:02
avatar
Moderator
17849 forum posts
1954 photos
1 articles

It was quite a good fit, had to use the pin spanner to wind it back on and the slot is off centre so it bends the thin side where the head is away

All Topics | Latest Posts

Please login to post a reply.

Magazine Locator

Want the latest issue of Model Engineer or Model Engineers' Workshop? Use our magazine locator links to find your nearest stockist!

Find Model Engineer & Model Engineers' Workshop

Latest Forum Posts
Support Our Partners
Allendale Electronics
ChesterUK
emcomachinetools
cowells
Warco
Eccentric July 5 2018
Ausee.com.au
Eccentric Engineering
Subscription Offer

Latest "For Sale" Ads
Latest "Wanted" Ads
Get In Touch!

Do you want to contact the Model Engineer and Model Engineers' Workshop team?

You can contact us by phone, mail or email about the magazines including becoming a contributor, submitting reader's letters or making queries about articles. You can also get in touch about this website, advertising or other general issues.

Click THIS LINK for full contact details.

For subscription issues please see THIS LINK.

Digital Back Issues

Social Media online

'Like' us on Facebook
Follow us on Facebook

Follow us on Twitter
 Twitter Logo

Pin us on Pinterest