cutting gears with a rotary table price
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SteveEx30 cutting the teeth in plastic goes pretty quick,probably a couple hrs.I got 3 gears out of that blank after the teeth were cut.That Nyloil MDX was a pain in the ass to part off.You nave to use plenty of coolant.The stringers will not chip and make a much stronger stringer than Delrin.If you stop before you part off completely it wraps tightly in the groove and takes a while to pull out before you proceed.I have found,with plastic and brass that when cutting multiple gears that it is quicker to cut the teeth first first then part off the blanks.It is easier to finish the blanks and then cut the teeth but you have to make a more complicated mandril and have to change blanks one at a time.I was able to stay on cutting the teeth to completion,but had to wait a day after I set up before I could start,then several days before I could finish because of breakdowns,other priorities.So it is hard to figure exact time but maybe 3 hrs per gear.Since these types of jobs are added value of my own initiative the time factor is not as critical as it would be in a job shop with a customer waiting.One good thing about this place is that I am allowed to tackle any job that I think I can do.I am 70 years old and when I think about retiring,my hobby would be dicking around in my shop doing basically the same thing as I do at work,without the insurance,pay and benefits!
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I have seen a Rotary Table with dividing plates at a good price, what are the advantages of a Dividing Head over the Rotary Table. I know that a chuck can be fitted to the Rotary Table, it seems to me they do the same job.
Check the rotab can be mounted on its side or you have a big enough angle plate. Sometimes the extra diameter of the rotab gets in the way but otherwise it is just as capable as a dividing head until you get to the more complex "universal" type that can tilt and do differential indexing for prime numbers, or be driven to make spirals.
A rotary table is a very useful but not often used device in most workshops, takes up space as well, I know, as I have one together with the dividing plates. Be careful using the tables for gear cutting as there are some with errors and its very annoying to find that you have a thin tooth for no fault of your own. Recently I made a stepper motor Arduino controller from the article in Model Engineer Workshop issue 249 which I can recommend. No more thin or one tooth short errors, works good. The article used two switches as inputs, where as I and I"m sure others have done, used a 4 x 4 key pad. Not being very well versed in micro electronics I received help from readers on this forum, and from my neighbour Steve, many thanks fella"s. John
Unless you have a CNC machine or stepper driven rotary table, a manual rotary table is one of the few ways to machine cylindrical paths in a way you couldn"t otherwise. You"d struggle to do that with a dividing head. I used my rotab to machine internal and external surfaces with success, although nowadays my CNC machine does a much better job in a fraction of the time.
I have seen a Rotary Table with dividing plates at a good price, what are the advantages of a Dividing Head over the Rotary Table. I know that a chuck can be fitted to the Rotary Table, it seems to me they do the same job.
They are similar devices with similar functionality. But I"d say a Rotary Table is generally more flexible than a Dividing Head. Often a table can be mounted either flat or vertically, whereas heads are typically one-way. It"s occasionally useful to be able to clamp work direct to a table. Heads often only divide while tables usually do angles and divisions.
I have a rotary table, and combined with a calculator can divide any number of divisions, not limited by the plates. BUT it"s even easier to get wrong if not systematic.
My Vertex HV6 is one such. It cost me three scrap items, before realising that the errors were not mine. I made up my own division table, using EXCEL. This showed that the published table had eight errors or omissions!
Thanks for these replies they have been very informative. The reply from Dave Halford about cutting curves on the Rotary Table can be a problem with the worm gear, if not up to it.
I have been given a 4 inch table some time ago unused which was purchased in the mid eighties. It is a import and will cut a curve in steel as I used this to recess a flywheel.
I like the idea of a Rotary Table with plates, the ones I"ve seen advertised by Warco seem quite a good price, but are they any good,can they cut curves in steel with out stripping the worm gear ? Fed up with buying crap, stuff not fit for purpose until modified.
This is what can happen to the gears when cutting a curve if the load is too high. The rotary table was not one of the cheap ones but a quality one, made in Japan.
A rotary table is a handy accessory for your mill for lots of applications.and I would not be without one but would advise that you get the biggest that would fit on your mill table..
I have happily cut curves in mild steel and gauge plate on my Soba 6" but they were within a reasonable expectation of what the table could handle and the depth of cut was also appropriate to my machine and tooling. Take a look back through some of Paul"s other photos and see the size of work being done on his similarly made but "quality labled" table and is it any wonder the gears stripped?
Chain drilling followed by light finishing cuts with a keen cutter may be a sensible alternative to trying to make heavy cuts with less than keen cutters (and not climb milling, either), when using a less robustly built rotary table. So, much in agreement with JB, I suppose.
Apologies to Howard if this is well covered elsewhere, but the calcualation to *check* an entry in a division table is relatively simple. It does involve vulgar fractions. Do schools still teach that?
Whatever about the rotary tables themselves being crap and way out,there is no excuse for the charts to be in error. A simple test run would soon show up any blunders which should then be corrected before production.
If anyone wants to try amending the original spreadsheet for gear ratios other than the original 90:1, the EXCEL spreadsheet is viewable at the top of the thread quoted by Neil. Hopefully, changing the formula from 90:1 to, say, 40:1 will produce sensible answers for Rotary Table or Dividing head with that ratio.
Am wondering if I am clever or brave enough to make two more division plates for my HV6. A "D" plate with 22, 24, 26, 28, 32,34, 38 holes and an "E" plate with 42 and 46 holes. All these should be "doable" with the existing "A", "B" and "C" plates, and would fill a few gaps in the table.
Another project would be to make a small Dividing Head for the mini lathe, (inspired by Stub Mandrel"s one, using the division plates from the HV6. Another "Make it up as you go along job"!
Many members that post here have modern smartphones that have more processing power then any 1970 era CNC machine ever made regardless of cost at the time.
The downside is that used high end manual machines became rare by the late 90"s, the low end importers and manufacturers stepped in to fill this niche. You now have 2 choices, a $40,000.00 Haas small lathe or a $4000.00 small lathe from Enco/HF/PM
Cut gears with your rotary table by using dividing plates (index plates) to get the exact divisions. You can also precisely divide a circle into a number of divisions or degrees, cut bolt hole circles, or mill polygons with the use of these dividing plates. 33-101 is a 3-piece set that fits on your 6" rotary table, 33-100. 33-106 is a 2-piece set that fits on your 8" rotary table, 33-105.
It swivels so you can set it up so the face is horizontal but by the time you add a chuck it"s getting quite high and you sometimes run out of room for the tooling.
I have used it in the vertical position to cut a 107 tooth gear which isn"t covered by any of the dividing head wheels I"ve got. I set up an excel spreadsheet with the angle required for each tooth which isn"t as easy as it sounds as the rotary table is calibrated in degrees/minutes/seconds rather than decimal degrees so it took a bit of figuring out how to do it.
Anyway, I cut the gear all right (crossing out each angle on the spreadsheet as each tooth was cut) but you really need to be concentrating using this method.
One problem I had with the BS-0 is that the tapered hole isn"t a #2 Morse taper but a Brown and Sharp taper which meant I couldn"t find any collets for it. In the end I made a 1/2" collet out of brass which I found to be really useful. I don"t know if that is the case with the modern versions.
A rotary table used in conjunction with a mill allows a machinist to produce virtually any part they can design. Sherline’s rotary table is a precision piece of equipment that has been designed to work with their vertical milling machines. However, it can be used on any mill whenever the small 4-inch size would be an advantage. The only limits are size, not complexity.
The table is 2″ high and 4″ (100mm) in diameter. The main components have been machined from solid bar stock steel, and the complete unit weighs seven pounds. The table has been engraved with a laser, giving sharp and precise lines every 5°, numbered every 15°. These lines are calibrated with the 72-tooth worm gear that is driven by the handwheel. The handwheel is divided into 50 parts, making each line on the handwheel 1/10°. This allows a circle to be divided into 3600 increments without interpolation. Seventy-two revolutions of the handwheel rotate the table one revolution.
The rotary tables can hold more weight when they are not under a continuous load. Click on the Video tab above to see examples of different weights and uses for our rotary tables.
The table T-slots are identical to those used on the Sherline mill and lathe, making the vast line of Sherline tooling available for use with this product. Two hold-down clamps and T-nuts are provided with the table. Also included is an adapter that allows Sherline’s 3- and 4-jaw chucks to be screwed directly to the rotary table. An optional right-angle attachment is available (P/N 3701) to mount the table in the vertical position to increase its versatility further. With the table mounted vertically, an optional adjustable right-angle tailstock (P/N 3702) can be mounted to the mill table. It is used to support and stabilize the other end of long work held in a chuck or otherwise attached to the rotary table.
One of the main points to consider when selecting a rotary table is to go as big as you can within the limits of the milling machine that you want to use the table with. I have a small 3″ table that I have used with my Unimat Mill and with the larger Mini Mill, but it is rather small and very limited in capacity and stiffness.
The thumb screw on the main body can be released and then the worm rotated to disengage from the gear thus allowing the table to rotate freely, this allows the to be rotated by hand to a given position.
The 2 table clamps lock the table and stop rotation – they are a tad clunky and caphead bolts would be better than the bars. The issue is the bolts are 6×1.25mm which is a very odd and rare thread.
The back of the table with the bolts that attach the back plate, again there is no play in the main table bearing in any direction. The image to the right shows me fitting a locking bolt to hold the ER25 collet chuck in place.
The handle can be removed easily by releasing the caphead bolt. The handle being located with a keyway. This then allows the dividing plates and crank to be fitted in place of the free-rotating handle.
It was only after 6 months that I went to set the table up as a dividing head that I realised I had been sent 3 dividing plates, 2 of which were identical – an email to Warco and the missing dividing plate arrived 2 days later along with a free return address for one of the doubles that I had. Read more about gear cutting with the HV4 rotary table.
This calculation is available for free in a Workshop Calculations spreadsheet. That allows you to change the inputs for your own rotary table/head and division plates.
A solid 4″ rotary table that is actually nearly 4.5″ (110mm) and with a very sturdy worm drive. There are some oddities such as 6×1.25mm threads used for the locking nuts and the locking of the worm drive.
Aligning the rotary table – a simple method to align the rotary table centre with the mill spindle and then to align a part on the table and clamp it down. This is rather rough and ready approach, but it works to a degree. I’ve then gone on to try a number of different methods and then measured the accuracy using a dial indicator.
Gear Cutting with the Warco HV4 Rotary Table – I’ve now used this table with the indexing plates a number of times and the results are superb. This is a very easy to use table that is simple to setup with the plates and easy to again turn back to a normal rotary table.
Cutting treads on the wheel rims of the miniature traction engine. These treads are at 10° to the axis with 35 equally spaced around the circumference.
Sherline offers one of the finest small rotary tables on the market. It is available in manual or stepper motor drive modes. It can even be purchased with its one controller to be used as a programmable indexer.
can mount our chucks. This modification came about after requests from our laser engraving customers. The larger through hole allows for larger stock to be held. It also has a Nickel-Teflon plating on it because it was designed to be used in an every-day production environment. This gives the table a rust resistant surface that is hard and has added lubrication qualities.
Sherline�s rotary table offers an accurate, stable platform for rotary laser marking applications. Its compact size makes it a good fit in small enclosures. Visit our Video page to watch a Sherline CNC-ready rotary table in use in a laser marking application on round parts, illustrating the difference between trying to mark on a round part without rotating it vs. rotating it. Some of the videos are from Jimani Inc. Laser Marking Systems who use a high-speed motor to drive the table.
A:Generally Suppliers of the Slotting machines are providing only one year warranty period in the lathe machine. And it is not the proper return according to your investment. While We are providing 3 years warranty in our products. If there any parts damaged in your machine than we also provides free parts service in warranty period by fastest courier service.
A : Auto feed, Electric Motor, Vertical attachment, Rack cutting attachment, slotting attachment, dividing head, coolant pump with fittings, true chuck, Milling Adaptor, face mill cutter, milling vice, milling collet etc.
A: Yes, accept domestic LC for 60 days on credit. Generally our 75 % customers are purchasing Machine from us with 60 days Credit through a Simple Process of LC. When the Seller is Unknown or New to the Buyer, Letter of Credit is one good Alternative to do the Business with Such New Seller Because Buyer can Avoid Risk by such Letter. Letter of Credit is one Additional Benefit to the Buyer by which they canprotect Loss against Goods and Finance Also.The buyer can build safeguardsinto the letter of credit, including inspection of the goods and quality control, and set production and delivery times.
TSL vertical&horizontalrotary table is one of the main accessories of milling machine, it is used for index boring, milling, circle cutting, spot facing and boring hole etc on the milling machine. The rotary table in vertical with working together can be used on complex work for circle index boring and milling.
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Our FÖRSTER swivel welding tables offer maximum working comfort for all-round welding of complex assemblies. Ideal for all tasks due to a variable arrangement of our patented T-slot system.
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Index Designs is an all-American company. Their founders were part of the team that helped design, engineer, manufacture and market the very successful line of Fadal Machining Centers – starting in the 1970s. Index Designs entered the rotary table market in 2006 with the goal of creating a line of high-end, rugged and accurate rotary products that we could sell at affordable prices, but still be able to provide reliable delivery and superior customer service and support. Thier products are completely manufactured in our Chatsworth, California facility. Index Designs uses state-of-the-art, HMC’s, VMC’s and CNC gear cutting machines.