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Member postings for Chris Mate

Here is a list of all the postings Chris Mate has made in our forums. Click on a thread name to jump to the thread.

Thread: Emco FB2 mill - weird Z position shift
09/02/2022 16:48:16

Hi, just further curious about this.

Say you turn a test piece in a lathe with with a round tip as had already been done, but now above the round tip you turn a 5-10mm thick quare shoulder on this test piece and insert it in thec spindle.

Now you add the set indicator at the bottom touching the round piece, and add another dial test indicator resting on this turned shoulder. Now my question is what does the 2nd indicator indicate as the lower set indicator is deviating as the rotation is reversed-? I am I right to assume if the dial test indicator show no deviation, nothig has happenned in the spindle as it was reversed by hand-?

Edited By Chris Mate on 09/02/2022 16:49:15

Edited By Chris Mate on 09/02/2022 16:49:49

Edited By Chris Mate on 09/02/2022 16:50:32

07/02/2022 14:56:11

Hi, put your lathe in freest neutral and do the same test there, see what you get-?

2nd thougt:It would be most interestring to know....
1-if theres a difference with new bearings after installation new mill-?
2-And bearings that run a while in th same direction, minimal in other direction if any-?
2-Bearing that runned both directions evenly -?

Edited By Chris Mate on 07/02/2022 15:00:00

07/02/2022 12:53:37

What is the tool/indicator set called you use-?
With the round point used, it moves when you change direction of spindle and then stable at new indication which ends up either one of two readings, made me think of the inside of the bearings....The play/space between balls in bearing and how much movement there is only when direction is changed(Not referring to other plays in a beasring)-? I was wondering what bearing frequency checker would reveal as a cause ?

Edited By Chris Mate on 07/02/2022 12:55:15

Edited By Chris Mate on 07/02/2022 12:56:18

07/02/2022 12:13:07

Interesting..
 

Edited By Chris Mate on 07/02/2022 12:18:13

Edited By Chris Mate on 07/02/2022 12:19:01

Thread: Computer help required
04/02/2022 20:14:01

I have a DELL WIN 10 PC as well. This PC disk activity light is on the side, so I cannot see it. I put a small mirror so I can see the disc activity. There are two reasons I look at this like this:
1-To see quickly if theres any disc activity and if its continious and expected or not. If its going on and on I try to find the reason.
2-If you shut down Windows, you cannot see from Taskmanager the disk activity, which is important when switching the PC off. One should not switch the PC off after shutdown when there is still disc activity going on.

I also found that if WIN 10 updates, and it starts to "hang" at a certain % like even at 90%, the selution is to unplug your network cable to router, wait 1-2 minutes and reconnect it, then it always resumed the update till completed.

I also found with my Win 10 PC, if I switch the plug on wall on and immediately switch on the PC, I may encounter a slow boot up, if I wait 1 minute, its always fast every time.

Edited By Chris Mate on 04/02/2022 20:15:09

Edited By Chris Mate on 04/02/2022 20:15:47

Thread: Forum Posts
01/02/2022 13:47:51

Interesting safety issue:
I scoop where I can, then vacuum where I can, and then blow away something more spesific if necessary with a reduced blow/flow setting for that outlet, it feels very soft on the hand setting.

So far I only blew out lathe chuck scroll, and cutting some threads, and through the chuck bore to the rear of lathe , with a downpype in rubbish drum.

Edited By Chris Mate on 01/02/2022 13:50:57

Thread: Workbench top
31/01/2022 04:42:08

My workbench has a 3-Layer 22mm MDF glued/bolted down, then a 4mm alluminium plate glued on that with a drillpress bolted on each end, its pretty tough flat and can take hammerring.

Thread: What Did you do Today 2022
26/01/2022 17:12:56

Received the stainless drip tray to fit over vice on mill, it cover the table and bit more to the rear. Cut a hole in it from centre to fit over vice, added 4x plastic round feet below tray in each corner. It just slides over vice and sit on the table so the cooling liquid will flow down near the vice to the table leaving the chips behind. The mill is tilted somewhat so the table flow to its one corner from where it goes to a filter to the tank to a section that will separate the oil etc from above from the coolant and keep it floating above coolant.

Waiting for back stainless plate of a certain height 150mm that will cover lower to vice jaws operations, it will probably good for most reflecting coolant and chips back in tray. I also use a small piece of thick leather behind cutter to cover area near cutter and fold as head/quil may go up or down near vice fixed jaw.

I discarded the perspex safety plate fittings that came with the mill on a swing arm, but re-use it in the tray on rear side of vice, it just stands there and keep chips and coolant from splashing towards me if it happens, I can see clearly through it and can easily just remove it or re-insert it.

All this is just removeable pieces just for ease of use with the vice. If I work on the table clamping another stainless plan comes into play which the lower part will probably stay on permanently...Must still get there.

The trade off to this is I must extend my handle for adjusting the mill headstock up & down to the far left, which I dont mind doing, thinking of how to do it still.

Thread: Are you going to buy a milling machine
25/01/2022 16:30:22

I have watched youtube videos for a few years to see and hear the operation of the machines + workshop accidents etc.

I bought the largest lathe that I could handle myself with a 2-Ton engine hoist extended and did the same recently for the mill. For the lathe I bought tooling as time went on from fuel money I just drive less, for mill I even drive far less now, and its surprising how much money one blows out on fuel.

So for the mill I bought a clamping set, because I will need that.
I also bought a vertex 4 anglock vice, it looks well made, but without the degree table it sits on.

I am still busy doing a few things regarding coolant & chips I want to do.

My next buy will be a collet chuck and set. I cannot decide between ER40 & ER32 yet......Looking for opinions around this and which first collet sizes & milling cutters to buy instead of a set....Which 5x cutter sizes you suggest I buy and type-? Mostly aluminium & steel...I am not in a hurry and don't want to buy twice.

-Must buy parallel set as well....

Any suggestions would be appreciated.

Thread: 1st milling with the ZAY7045 Milling machine-Question
21/01/2022 14:54:22

Martin Connelly, just to let you know, I really appreciate this reply of yours.

In the mean time if you search "Conventional Mill" differences with other vertical mills, theres some interesting knowledge I did not know about......, so this is a Conventional Vertical Mill/Drill I have, they just did not say it like that in sales or manuals from what I got.

Edited By Chris Mate on 21/01/2022 14:57:06

20/01/2022 15:15:21

From the manual, poor quality, I illustrae the swivel parts involved:

zay7045m-bed parts-acess.jpg

20/01/2022 12:45:44

JasonB: I have certain trust assumptions I make and believe it is true points or surfaces that matters

Trusting points/Surcfaces:
(Till proved incorrectly manufactured or otherwise)

0a-The spindle centre.....I put the dial test-indicator inside the spindle centre and trust that in my case that is more accurate to the operation than any outside surface of the gearbox where they used body putty as filler.

0b-The X-axis hardware metal surfaces:These surfaces top and around looks very neatly grinded. I do not trust this mill's bed 4x grooves to be accurate on the insides, so say for example I put a precission parralel in groove to press a square and the sweep from that, I dont trust this way here.

Step-1:
So I clamp the precission square to the front of the X-axis bed, then position the test-dial indicator from spindle. locked out its backlash with hand so indicator stay put(Lowest gear set), I then swept the other part (90degrees of square) with the dial indicator by cranking the Y-axis. Now to me if this stay zero reading my X-axis is moving square to my Y-axis and at the same time I can claim my swivel bed is lined up at 100% zero mark.

Step-2:I Now assume X-axis is moving square to Y-axis.(Step-1 result)
So now I dial in the vice fixed jaw with dial test-indicator sweeping the fixed jaw by cranking the X-Axis.

Result: I now trust that the fix jaw of my vice move square to the Y-axis as I wanted in this case as I crank the X-Axis...I also trust that if I clam a 1-2-3 block in vice, it will swept zero reading if I crank the Y-Axis.

If I now cut a block square, and its not square......I have a problem to discuss with company I bought it from..

Edited By Chris Mate on 20/01/2022 12:47:13

Edited By Chris Mate on 20/01/2022 12:48:39

20/01/2022 10:51:14

JasonB, that is what I have done.

1-The Y-Axis is fixed and cannot move accept forward and backwards to and from the Z-axis, unless theres a manufactured problem and you need to fix that.
2-I have squared the X-Axis to the Y-Axis with a precission square, I only use for this pupose, I actually going to get a larger one. The X-Axis is part of the top of the swivel bed above the split.
3-Now I use the dial indicator in the spindle   to trim the vice rear jaw to the X-Axis which is square to the Y-Axis.

1 to 3 is exactly as I did it. In other mills the X-axis is fixed square suppose to be to the Y-Axis permanently, so unless theres a manufacturing problem or loose gibs, it must be ok, so you only left with the vice, head, and the X/Y towars the vertical column(shimming).

This is my understanding, except the confusion over the X/Y axis.

----------------------------------------------------------------------------------------

Andrew Johnstone:..."Setting the swivel table parallel to X"...

I am not sure I understand you here, my mill does not have more sections in the bed I can do that......I assume you mean setting the X-Axis=The top section of swivel bed above the split...square to the Y-Axis. Maybe your mill is different regarding the swivel parts its made of-?

Edited By Chris Mate on 20/01/2022 10:54:36

20/01/2022 04:55:55

Request: Can one of the moderators please close this thread, as its now a complete mess and serve no purpose.

I will carry on with the mill as time goes, if I understand something wrong, I will see/measure it in the part and learn from there. Thanks to those that gave inputs.

What I will do now is put a scribe in the spindle/drill chuck, fit a flat piece of aliminium to the vice, make a scribe with the spindle in the surface as it is now squared positioned according to indicator in spindle, then I will play around with the vice, table(x) and combination of both and see how and where the scribed lines go, I wont live long enough to go for an engineering degree, so it down tio the ground for me then.

Edited By Chris Mate on 20/01/2022 05:07:28

Edited By Chris Mate on 20/01/2022 05:08:25

20/01/2022 04:25:29

Andrew, my indicator was in a chuck(Z1/Z2-axis) in the spindle before I fit the face cutter, I then have the spindle in lowest gear and grip with hand to take up play, it then stays there, so the spindle does not move/turn, I then indicate the vice fixed jaw placed on X-axis which can swivel).
As soon as I receive my stainless tray to modify to sit over vice, I have to take it off, and will expiriment again. The indicator was not anywhere on the mill body positioned-Do I understand this wrong-?

Edited By Chris Mate on 20/01/2022 04:29:52

19/01/2022 19:55:40

Correction :
illustration for ZX-45 (ZAY7045M)-Swivel bed Mill
>The "M" indicates the swivel option in the model type.
Note:The X-AXIS swivel around zero degrees mark at split.
To dial in your vice fixed jaw square, ...you must 1st line up this X-Axis square to Y-axis, if not 100%, its difficult to get vice set 100% square. I have made 2x adjusting blocks(Bolt-On) with screw adjusters to easily square this bed (X) without tapping with a mallet, it can be easily removed if in way of swivel.
 

mill zx-45 from manual-zay7045m_2.jpg

Edited By Chris Mate on 19/01/2022 20:04:30

19/01/2022 18:56:10

Thanks JasonB, I found it(dro-linear-encoder-summing-interface) will look into it.

Edited By Chris Mate on 19/01/2022 18:56:28

19/01/2022 16:41:31

JasonB, thanks man, I appreciate this and will stick to this then..

Both manuals for the Lathe and Mill is pretty useless and poor print quality you get with it.

Just a question further about Z-Axis.

If you want to get a 4x axis DRO:
Is it correct to call the Mill Head moving up/down=Z1
And Quil moving up/down=Z2

19/01/2022 13:54:15

Hi, jason, I thought it was like you said, but after googling it, I got to as I have stated it. I have not yet a DRO, so if I misunderstood it, I accept, very confusing as explained in different places on the net.


Note-2 continiue:...(I cannot edit other post anymore)

5-I also modified the tapping switched function further so I have on top of hiow it naturally function, now two extra buttons which I can press a-to top it going down any place I feel like, then reverse it, and then stop it going upward any place I feel like, not relying on its positional limit switches.

Edited By Chris Mate on 19/01/2022 14:08:15

Edited By Chris Mate on 19/01/2022 14:08:44

19/01/2022 13:27:17

Disclaimer:I got a bit confused if I google the axis explanations, so correct me if I am wrong.
-I assume the X-axis is the one with the 1-Handwheel and you crank it towards or away from you.
-I assume the Y-Axis is travelling left to right in front of you with the two handwheels, one on each side.
-I assume your Head with gearbox going up and down is your Z1-Axis, and your quil up and down your Z2 axis.
- Will post a picture from the manual and mark the parts we talking about.........

Sorry if I used incorrect wording:
1-You have the lower cabinet on which it mounts.
2-Then you bave the power base which bolts to the cabinet.
3-The X-Axis are from the lower base top.
4-Then you have a center piece which make the swivel possible. This centre piece has a lower part which form the X-axis and its front handle. The top part houses the Y-axis lower part and you lock it down with two large bolts, one on each side.
5-The Y-Axis part of the table mounts and slides on this, controlled with the two handles, one on each side.
6-The Y-Axis is the one that swivel 45 degrees through 0-Degrees to 45 the other direction.

7-If I want to dial in my vice, I must 1st dial in the Y-Axis swivelled to 0 degrees. I have verified and fine adjusted it using a precission square running the X-Axis forward and backward in relation to spindle. If this is not exactly zero, I found I cannot dial in my vice 100%. I think this may be interesting, seeing if you dont have a swivel bed Y-Axis you rely on its manufactured accuracy, which if slightly out, is a difficult job to get right, so I assume in such a case you can spend hours and just get your vice 97% say accurate as example.
-So I assume if you have a mill without the swivel bed, and you get your vice dialed in 100% you have an accurate mill in that regard.

Added pictured explanation of how it swivel:
The Mill I bought was named=ZX45 as plate shows on face of it.
However the manual I received with it say its ZAY7045M, where M=Indicate the swivel function option.
It is sort of heave, If I hoist it without cabinet, my new 2-Ton engine hoise dont move by pushing it, I had to lever it with a jack handle along the floor. I am not sure exactly what it weighs, seeing themanual in places not accurate, like it has a MT3 spindle, no, it has an MT4 spindle. It looks similar to some heavier duty drill presses.
It has a 10A motor 220V. It seems not sloppy in the axises.
mill zx-45 from manual-zay7045m.jpg

Note-2:
I did a few electrical mods to the machine.
1-The thread cutting feature, the upper limit switch was garbage. I removed it, and fitted a quality switch inside towards the bottom, but it now always indicate the quill in its top resting position.
2-I added a 24V fuse and on/off switch.
3-I must still add a safety off switch to a foot pedal as I did with the lathe if both hands are occupied to switch it off..(After the carnage happenned if it fast).
4-I did various mods to the coolant system, still busy with the returm path from bed.

Edited By Chris Mate on 19/01/2022 13:48:44

Edited By Chris Mate on 19/01/2022 14:01:30

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