Re: Reversing gear problem
Pete, I just (attempted to anyway) sent you the exploded drawing
out of my book direct to your email.? I think the peened shaft is
really holding only the quadrant and the gear in question (which
does NOT move with the quadrant) will come off with Part #48.
It looks to me like the idler shaft within 48 actually aligns
with the quadrant pivot and may well be about the same diameter.?
If you think about it, look at your drawing and see if the gears
have keys (Part # 47).? It would be impossible to have Gear 45
keyed to Shaft #46 and have it peened into the housing.? It would
have been seized from time of assembly.
I still suspect if you pull the change gears and pull Mount 48 (2
screws) Gear 45 will come with it and it's the mount/shaft that is
stuck (Part 48 to Part 46).
If our drawings don't match, bets are off.? This same arrangement
was continued in later models.? Sooo, someone (maybe Chris at LMS)
could tell you if you can use the later parts to 'upgrade' the
unit.
Warren L
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?
Hi Warren
?In my manual for the 33684 model of the Harbor
Freight lathe the shaft #46 goes through the 45 tooth
gear part number 45 then through what looks like a
washer #22 then through the quadrant plate #36 and ends
in the backing plate made of pot metal where it looks
like it is peaned to hold it in a fixed non rotating
hold in that plate. ?The quadrant plate and 45 tooth
gear should turn independently on that shaft #46.
I was hoping someone on the list could confirm this
or point out the error of my observation. ?If i am right
i will have to replace the shaft, gear and backing plate
after i rip the existing shaft out of the backing plate
which will destroy then but salvage the quadrant plate
and washer.
I hate to destroy something if there is a better way
to fix this seized gear.
Thanks for the help
?
Pete, I dont have a 7x10 but have collected up
the HF manuals and after looking at three of them,
it appears that the gear in question comes off
with that "brass" bearing mount (Drawing # 48 if
you have the manual) that is just in front of it.?
That gear seems to be mounted on a short shaft
that connects it to the smaller gear in front of
the retainer.? Both gears are keyed to the shaft.
I suspect what you see peened over on the back
side is the pivot for the forward/reverse quadrant
(Part #36 called handle mount).
I'm not even sure the gear shaft goes into the
casting.
From here, it looks like it would be easy enough
to pull the change gears and the mount, and see if
the offending gear comes with it.
From the description you gave for the failure, my
best guess would be the bearing in the mount
failed.? I believe Little Machine Shop lists all
of those parts.
......again, best guess from the manuals.......
Warren L
?
The reversing gears on my 7x10 harbor
freight lathe33684 have seized. Specifically
the black 45 tooth gear shown in this picture.
Does this gear just
pull off or is there a sleeve on this shaft
the should come off first?
The shaft seems to
be pressed into the potmetal frame behind the
gear and peaned so it should not come off.
Any help would be
appreciated.
Thanks
Pete McLaughlin
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Re: Reversing gear problem
Hi Warren ?In my manual for the 33684 model of the Harbor Freight lathe the shaft #46 goes through the 45 tooth gear part number 45 then through what looks like a washer #22 then through the quadrant plate #36 and ends in the backing plate made of pot metal where it looks like it is peaned to hold it in a fixed non rotating hold in that plate. ?The quadrant plate and 45 tooth gear should turn independently on that shaft #46.
I was hoping someone on the list could confirm this or point out the error of my observation. ?If i am right i will have to replace the shaft, gear and backing plate after i rip the existing shaft out of the backing plate which will destroy then but salvage the quadrant plate and washer.
I hate to destroy something if there is a better way to fix this seized gear.
Thanks for the help
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On Aug 2, 2017, at 2:08 AM, Warren LeMay notebook@... [7x12minilathe] < 7x12minilathe@...> wrote:
?
Pete, I dont have a 7x10 but have collected up the HF manuals and
after looking at three of them, it appears that the gear in
question comes off with that "brass" bearing mount (Drawing # 48
if you have the manual) that is just in front of it.? That gear
seems to be mounted on a short shaft that connects it to the
smaller gear in front of the retainer.? Both gears are keyed to
the shaft.
I suspect what you see peened over on the back side is the pivot
for the forward/reverse quadrant (Part #36 called handle mount).
I'm not even sure the gear shaft goes into the casting.
From here, it looks like it would be easy enough to pull the
change gears and the mount, and see if the offending gear comes
with it.
From the description you gave for the failure, my best guess
would be the bearing in the mount failed.? I believe Little
Machine Shop lists all of those parts.
......again, best guess from the manuals.......
Warren L
?
The reversing gears on my 7x10 harbor freight
lathe33684 have seized. Specifically the black 45 tooth
gear shown in this picture.
Does this gear just pull off or
is there a sleeve on this shaft the should come off first?
The shaft seems to be pressed
into the potmetal frame behind the gear and peaned so it
should not come off.
Any help would be appreciated.
Thanks
Pete McLaughlin
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make magazine multi-tool from a grinder
I just received my weekly make magazine newsletter and it has a link to?a set of videos that?Tuomas?Soikkeli made on how he turns a Bosch angle grinder into a guided cutter, chop saw, bench grinder, polisher, pipe cutter (which can handle pipe from 50-125mm diameter), circular saw, and more.
I wouldn't do it myself, but It looks pretty cool so I thought others on this list might like it.
? Paul Conti -- USA
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Re: Reversing gear problem
Pete, I dont have a 7x10 but have collected up the HF manuals and
after looking at three of them, it appears that the gear in
question comes off with that "brass" bearing mount (Drawing # 48
if you have the manual) that is just in front of it.? That gear
seems to be mounted on a short shaft that connects it to the
smaller gear in front of the retainer.? Both gears are keyed to
the shaft.
I suspect what you see peened over on the back side is the pivot
for the forward/reverse quadrant (Part #36 called handle mount).
I'm not even sure the gear shaft goes into the casting.
From here, it looks like it would be easy enough to pull the
change gears and the mount, and see if the offending gear comes
with it.
From the description you gave for the failure, my best guess
would be the bearing in the mount failed.? I believe Little
Machine Shop lists all of those parts.
......again, best guess from the manuals.......
Warren L
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Show quoted text
?
The reversing gears on my 7x10 harbor freight
lathe33684 have seized. Specifically the black 45 tooth
gear shown in this picture.
Does this gear just pull off or
is there a sleeve on this shaft the should come off first?
The shaft seems to be pressed
into the potmetal frame behind the gear and peaned so it
should not come off.
Any help would be appreciated.
Thanks
Pete McLaughlin
|
Re: Reversing gear problem
The shaft should pull out of the pot metal frame easily. It sounds like that is the part that is seized. The 45 tooth gear is held in place by a external snap ring. The change gear, shaft and 45 tooth gear rotate as a unit in the pot metal frame and half moon shaped carrier. Some how your going to need to get the shaft out of the pot metal frame and smooth out the frame and the shaft so the shaft turns freely. Paul M
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The reversing gears on my 7x10 harbor freight lathe33684 have seized. Specifically the black 45 tooth gear shown in this picture.
Does this gear just pull off or is there a sleeve on this shaft the should come off first?
The shaft seems to be pressed into the potmetal frame behind the gear and peaned so it should not come off.
Any help would be appreciated.
Thanks Pete McLaughlin
|
>Yes, I assumed he just flip flopped
them.
Indeed I did! Sorry about that. -though I'll probably still refer to them as "those ones you can't search"? ;-)
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This may be of interest re: PDFs.
We recently, maybe 10-11 months ago, bought a very high end office printer/scanner, since we scan over 5000 pages/week and keep/db/archive them all.
The new printer scans at 60 pages per minutes from both sides of A4 paper at once-300-600 dpi.
We use 300 dpi full colour for everything.
The most important discovery.
The printer uses a dedicated hw processor to compress PDF files.
Its a pipeline, and hw scanning, printing, and compressing are complely independent processes than run in parallel.
The new printer make a 30-40 page document, scanned at 300 dpi, full colour, about 3-4 MB in size.
SW-compressed PDF files, 30 pages, 300 dpi, are typically about 20-30 MB.
So the best tech. makes PDF files 10x smaller, at better quality !!
Tested with exact same 2 docs, via sw and hw.
Quality is at least as good, perhaps better, with the new hw scanning/compressing, vs sw compressed pdf files.
These are typically deeds, legal docs etc. of low amount of photos.
I tested this with a typical acid-test.
High-speed scan a file to pdf, print it, compare to original.
It looks near-original.
Second-Best part.
We got the 12.000� printer free of charge !
from the distributor, and pay about 2 cents/page in costs, full-colour printout costs.
We only pay for pages used, and nothing for the hw.
Total costs == 300� /month, vs 500� in the past by using an HP 3000 series network printer, full set of consumables, every month.
This includes all consumables, printer, service, support etc.
Yes, we paid nothing for the printer, and have a 3 or 4 year contract.
The scanner attachment is a special expensive add-on, was worth maybe 1500-3000�, and Very Good for us.
The single-pass top-bottom scan means no paper jams, ever, and amazing speed.
Iirc a Minolta top end model, re-badged something for the german market, official dealer and service, specialist printer retailer.
A curious, valuable, feature is you can manual-scan docs, while the printer is printing and sorting to == 10 hoppers at the same time.
Likewise, loading paper ink, staples etc. does not affect scanning at all.
So for == 15 people using it, scanning has zero impact on print workflow.
Volume doubled, time saved scanning == 77 hours / month, costs dropped 40%, filesizes dropped 90%, quality improved.
And we can print really neat presentations, stapled, with top-bottom covers on specialty gloss paper, for 10x less cost than print service, in maybe 12 minutes for 50 sets of 30 pages.
Seldom used, but sometimes very valuable.
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On 31/07/2017 22:46, Ian Newman ian_new@... [7x12minilathe] wrote: Hi Ralph,
<SNIP>
If you have a .pdf why do you need a image?
</SNIP>
The issue arose due to a desire a use a photo hosting site.
All the best,
Ian
--
-hanermo (cnc designs)
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Thanks for that PDF info Michael. I had always assumed somehow that those "vector" types you describe were just stuff that was too old to originate in digital form and thus had been scanned rather than converted and formatted to PDF.
BTW- As much as I like a good paper book, that search capability easily balances things out. Drives me crazy when a PDF can't do it (that, and the index page numbers that don't match the document's).
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There aren't that many that do both images and text well. Not that the "portable document format" is perfect. Just pretty good for folks who need or want to combine text and images in one file. Works best on a fairly large screen if you use it for books. They often don't ?scale well. I have 40+ gigabytes of metalworking material, among other things, in the PDF format. It's outlasted over a dozen other file formats for me.
Bill in OKC
Sent from my Sprint Phone.
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-------- Original message -------- From: "jimmy alpha zriverrat@... [7x12minilathe]" <7x12minilathe@...> Date: 7/31/17 4:59 PM (GMT-06:00) To: 7x12minilathe@... Subject: Re: [7x12minilathe] PDF files
On 7/31/2017 5:23 PM, wmrmeyers wmrmeyers@... [7x12minilathe] wrote:
> PDF files contain images and text, most of the time. Unlike most image
> files.
>
> Best reason to use PDF files right there. :)
>
>
> Bill in OKC
Perhaps we can add all of the other type files to this thread too, there
are hundreds of file types we all use?
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The confusion here with PDF files is that PDF files can be
Vector or Raster.
?
In a Vector based PDF file you can highlight text and copy it
as text and paste it into another program.
?
In a Raster based PDF file the text in the file will be
displayed in a raster (bitmapped, pixels only) format which cannot be
highlighted as text and copied (or searched for with a search
command).
?
A Vector based PDF files can contain both raster
(bitmap)?images. The Raster image can include text within the image
itself.
?
The PDF file format was based on the PostScript print
language.
?
You can take a file containing text, and create either a PDF
file that is vector, or raster. Sometimes PDF documents are created in a raster
format to prevent the copying of the text easily. This of course was easily
bypassed with OCR (optical character recognition)?software which can
translate the shapes of the bitmapped/raster images of the text and convert them
back to editable text again.
But
this has little to do with machining, so that's all I have to
say.
?
Michael - California, USA
Micro-Mark
MicroLux 7x16
LMS 3990 Hi-Torque Mill with power feed
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?
actually a .PDF is an image file.
If you have a .pdf why do you need a image.?
Just put it somewhere on the web and do a link to it.
.PDF readers are free.
Ralph
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On 7/31/2017 5:23 PM, wmrmeyers wmrmeyers@... [7x12minilathe] wrote: PDF files contain images and text, most of the time. Unlike most image files.
Best reason to use PDF files right there. :)
Bill in OKC Perhaps we can add all of the other type files to this thread too, there are hundreds of file types we all use?
|
PDF files contain images and text, most of the time. Unlike most image files.?
Best reason to use PDF files right there. :)
Bill in OKC?
Sent from my Sprint Phone.
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-------- Original message -------- From: "rhulslander@... [7x12minilathe]" <7x12minilathe@...> Date: 7/31/17 1:16 PM (GMT-06:00) To: 7x12minilathe@... Subject: Re: [7x12minilathe] Re: Pics and files
actually a .PDF is an image file.
If you have a .pdf why do you need a image.?
Just put it somewhere on the web and do a link to it.
.PDF readers are free.
Ralph
|
Hi Ralph,
If you have a .pdf why do you need a image?
The issue arose due to a desire a use a photo hosting site.
All the best, Ian
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On 31 Jul 2017, at 19:16, rhulslander@... [7x12minilathe] < 7x12minilathe@...> wrote:
?
actually a .PDF is an image file.
If you have a .pdf why do you need a image.?
Just put it somewhere on the web and do a link to it.
.PDF readers are free.
Ralph
|
True - I needed logo a silkscreen for a Rockwell Collins device I was designing. Needed the color seps of a vector based artwork for a rack unit I was having machined.
The only place I could find one in the short term (after asking corporate for one who had no clue waht I meant by "vector" ) was in their Stockholders Quarterly Report... I used Corel to rip it out of the PDF and was able to give a preflight that was close to the artwork guys at the machine shop for the silkscreen dude...
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On 7/31/2017 2:30 PM, Ryan Daughtry rayanth@... [7x12minilathe] wrote: "actually a .PDF is an image file."
I am intimately familiar with the 1200+ page PDF Specification, as I write
programs to read PDFs. They are not image files. They can contain images,
but they are not images themselves, they are a descriptive language, with
roots in the same PostScript language that your computer uses to tell your
printer how to print a document. PDF Language defines all of the constructs
needed to generate vector graphics, basic geometric shapes, text, embedded
pictures, and with proper extensions, even multimedia such as sound,
videos, 'virtual 3d graphics', etc.
Due to the overhead of the PDF language, a PDF containing only embedded
imagess will almost always be larger in disk size than the image files
themselves. (Exception being if the image file was a low-compression jpeg,
or uncompressed image like GIF or BMP, as PDF may manage to compress it
more)
As for why an image file might be needed over a PDF, many image sharing
sites will only let you share image files, and not PDFs. Since the
discussion devolved from where to host images to share, I presume there's
still consideration for using image sharing sites, rather than generic
cloud storage, which would let you store and share anything - and be more
likely to compromise other personal files and information if hacked.
-- Ryan
On Mon, Jul 31, 2017 at 11:16 AM, rhulslander@... [7x12minilathe] <
7x12minilathe@...> wrote:
actually a .PDF is an image file.
If you have a .pdf why do you need a image.
Just put it somewhere on the web and do a link to it.
.PDF readers are free.
Ralph
|
>> "actually a .PDF is an image file."
I am intimately familiar with the 1200+ page PDF Specification, as I write programs to read PDFs. They are not image files. They can contain images, but they are not images themselves, they are a descriptive language, with roots in the same PostScript language that your computer uses to tell your printer how to print a document. PDF Language defines all of the constructs needed to generate vector graphics, basic geometric shapes, text, embedded pictures, and with proper extensions, even multimedia such as sound, videos, 'virtual 3d graphics', etc.
Due to the overhead of the PDF language, a PDF containing only embedded imagess will almost always be larger in disk size than the image files themselves. (Exception being if the image file was a low-compression jpeg, or uncompressed image like GIF or BMP, as PDF may manage to compress it more)
As for why an image file might be needed over a PDF, many image sharing sites will only let you share image files, and not PDFs. Since the discussion devolved from where to host images to share, I presume there's still consideration for using image sharing sites, rather than generic cloud storage, which would let you store and share anything - and be more likely to compromise other personal files and information if hacked.
-- Ryan
On Mon, Jul 31, 2017 at 11:16 AM, rhulslander@... [7x12minilathe] <7x12minilathe@...> wrote:
?
actually a .PDF is an image file.
If you have a .pdf why do you need a image.?
Just put it somewhere on the web and do a link to it.
.PDF readers are free.
Ralph
|
actually a .PDF is an image file.
If you have a .pdf why do you need a image.?
Just put it somewhere on the web and do a link to it.
.PDF readers are free.
Ralph
|
Mike, I just popped a PDF into my GIMP and imported it as first, layers (no good) and images (okay), but each images gets its own filename even when exporting to TIFF. That means an independent program is needed to make the multi-page conversion work for your purposes. A quick check with The Google shows a number of online services to perform this task, as well as a number of free download, likely supported with embedded adware, beware!
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Warren LeMay