The perfect ME Lathe

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The perfect ME Lathe

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  • #72011
    Roderick Jenkins
    Participant
      @roderickjenkins93242
      Let us assume that you are an entrepreneur who has identified a recently opened gap in the market for a premium lathe for the model engineer. What would be the specifications for this machine? Being a canny business man you have noticed that the market will not support a price of £8,000+.
       
      Rod
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      #16680
      Roderick Jenkins
      Participant
        @roderickjenkins93242
        #72013
        David Clark 13
        Participant
          @davidclark13
          Hi There
          It would need the same capacity as a Myford ML7as a minimum including the gap bed.
          Alternatively, no gap and 125mm centre height.
          Poly Vee belt drive. (Geared head to noisy in home environment.)
          Lever or capstan feed tailstock.
          Tee slotted cross slide.
          Screw on chuck with locking mechanism so lathe can be run in reverse.
           
          Optional
          Single tooth dog clutch for leadscrew.
          Screwcutting gears for imperial and metric.
          Variable speed drive.
          Back gear.
          Bed stop as standard.
          regards David
           
           
           
          #72014
          John Stevenson 1
          Participant
            @johnstevenson1
            Same as David but no screw on chuck, this is 2011 and the D and A series are very well established.
             
            Decent travel on tailstock barrel, at least enough to reach the work !!
             
            Integral 5C spindle bore
             
            John S.

            Edited By John Stevenson on 18/07/2011 13:00:13

            #72015
            Chris B
            Participant
              @chrisb73862
              Sounds very much like you are describing a modified Boxford ME10 but using the VSL headstock spindle to give L00 mounting and a large bore. If only they were still producing the belt drive machines.
               
              It is a shame Boxfords did not have the same popularity as Myfords as they are a very capable machine.
              #72017
              mick
              Participant
                @mick65121
                If your going to all the trouble of desigining the perfect lathe, then you should do away with change gears and have a decent tumbler gear box, with the cabability of delivering a good range of power feeds as well. One shot lubrication. Don’t forget the powered cross slide, quick change and rear mounted tool posts. I’ll proberly think of some more as soon as I’ve posted this!!
                #72018
                Roger Woollett
                Participant
                  @rogerwoollett53105
                  Why not take the opportunity to actually advance the technology:
                  Use a brushless DC motor with variable speed control like Arc Euro’s recent offerings.
                  Scrap the change gears and fit a stepper motor to the leadscrew giving any pitch or feed rate you care to dial in.
                  Fit DROs to the saddle and cross slide as part of the design rather than as a bolt on extra.
                  #72019
                  Keith Long
                  Participant
                    @keithlong89920

                    Before we all get carried away defining our “perfect” model engineering lathe with gold plated bells and whistles, perhaps a cold hard look at what the market can support is called for.

                    How many machines a year can you sell at £8k+ – not enough to keep an established business going.

                    At £4k+ – quite a few more but probably no more than the low hundreds.

                    At £2K+ more than at £4k but even at this you’ll probably have to sell world wide with all it’s implications in order to get the sort of volume you’d need to meet this selling price, and remember this is the selling price to the end customer, if you’re making them you’ll need to do it, finished, for half that price in order to get a decent margin to pay for the factory unit, the heating, lighting etc.

                    Not a business proposition to take on lightly I think especially in the UK, Europe or the USA.

                    Keith

                    #72020
                    michael cole
                    Participant
                      @michaelcole91146
                      Geared head to noisy in home environment. No it is’nt. I run a Gearhead boxford and it is no more (and probley less) nosiy than a myford S7 i had. Added to which quick and easy speed change. D-13 camlock chuck. full gear box and large bore. The ideal lathe (for me ) a Boxford .
                       
                      Mike
                      #72021
                      Roger Woollett
                      Participant
                        @rogerwoollett53105
                        Keith we can all dream!
                        On your more serious point I agree, it is unlikely anyone would want to enter the quality end of the ME market. In any case there are a number of offerings already there. I have never used any of these but from the adverts Wabeco, Emco and Ceriani all seem to offer a better product than the standard chinese offerings. Obviously the price is higher.
                         
                        #72022
                        John Stevenson 1
                        Participant
                          @johnstevenson1
                          Posted by Roger Woollett on 18/07/2011 15:01:54:
                           
                          Emco and Ceriani all seem to offer a better product than the standard chinese offerings. Obviously the price is higher.
                           
                           
                           
                          I bed to differ on this after having seen that cock up that Emco offered for a spindle design in a post on here.
                           
                          Also before over specing a design look at what the Myford had to offer and that couldn’t make it.
                           
                          John S.

                          Edited By John Stevenson on 18/07/2011 15:26:33

                          #72023
                          Keith Long
                          Participant
                            @keithlong89920

                            Hi Roger

                            No harm at all in dreaming, in fact it’s essential to come up with a suitable spec For example the built in DRO’s would probably at the moment push the price too high, but provision for fitting DRO’s designed in from the start and available as an option from new and as an accessory for retrofit could make the basic machine much more affordable in the first place, and more versatile for users as time, funds and experience allow. We are seeing home cnc machines “off the shelf” becoming more affordable and the same technology will extend to lathes, we might just have to wait a bit.

                            Perhaps the people that you mention, Wabeco, Emco, Ceriani et al will decide that there is a gap to be filled with a suitable machine. They already have the distribution and service networks in place so should be better placed to respond. Another alternative is that the makers of the cheaper Chinese machines may realise that there is a market for a better finished, more robust machine and again respond to the challenge.

                            I think that if someone does go for the vacant niche they will have to invest in production tooling and methods that can produce a lathe without the need for extensive hand finishing and fitting – that really is expensive.

                            Keith

                            #72024
                            Chris B
                            Participant
                              @chrisb73862
                              Keith
                               
                              That was why I mentioned the belt drive bench mount Boxford, they probably still have the tooling and could put it back into production if there was sufficent demand to fill the recently vacated niche.
                               
                              Chris
                              #72030
                              blowlamp
                              Participant
                                @blowlamp
                                I’m in agreement with many of the suggestion that have already been made, but here’s my list of desirables.
                                 
                                Variable speed, with a couple of pulley ratios for extra torque and quiet running. No stripping to replace the belt.
                                Easy provision for indexing the spindle to enable graduating etc.
                                Camlock spindle (or even 3 stud fixing if easily accessible), with big bore.
                                 
                                Lever operated (or rack drive) tailstock quill with camlock clamp of tailstock to the bed.
                                 
                                Electronic leadscrew/feedshaft that replaces the gearbox and change wheels, to allow for any thread pitch, plus power cross-feed.
                                 
                                Substantial Inverted (hardened) Vee-bed, designed as far as possible to shrug off swarf from the ways. Plenty of saddle surface area in contact with the bed for low wear.
                                 
                                Tee-slotted (along its length) cross slide with top slide that has a long travel, with nice, meaty gib strips – taper type if possible.
                                 
                                The Sieg C4 seems to be going in the right direction – if only it were a little larger.
                                 
                                Martin.
                                #72032
                                Clive Hartland
                                Participant
                                  @clivehartland94829
                                  Dream on, Dream on. No one lathe has all the desirable specification but a large bore spindle is a must for me and cam loc or stud chuck mounting.
                                  Slotted cross slide and compatable accessories to go with it. Tail stock to be substantial and of decent quill travel.
                                  The drive to be fully variable and the lead screw to be electronic thread count.
                                  One more important thing is a chuck back plate pre-drilled with 60 holes for indexing which a lot of you have missed out!
                                   
                                  Clive, Oh, and less than £3000 cost, dream on!
                                  #72037
                                  Gray62
                                  Participant
                                    @gray62
                                    Many of the chinese lathes are getting very close to an ideal machine, build quality aside!
                                    DRO’s are nice but not a necessity, I have been aking accurate parts for years without one on my lathes. Accurate dials and a reasonable brain work just as well.
                                    Camlock mounting is essential, the screw on chucks of Myford et al are dated and potentially dangerous.
                                    Geared head with a 2 stage belt drive to extend the range gives the majority of speeds required by most model engineering disciplines, maybe a belt change system akin to the tri-leva system would be a distinct advantage.
                                     
                                    A quick release clutch and a single point dog clutch on the feed screw are essential.
                                     
                                    Geared head lathes are not necessarily noisy, or inconducive to a domestic environment.
                                    My Warco GH lathe is very quiet, ( in fact I often work late at night and none of my neighbours have heard any unduly disturbing noises) well, not form the lathe anyway LOL.
                                     
                                    To compete with far eastern manufacturing will be very difficult in the current economic climate.
                                     
                                    For a quarter of the cost of a top end Myford, I bought a large capacity machine which met most of my requirements. Whatever is missing can be easily manufactured for very little financial outlay and will still surpass the capabilities of a Myford.
                                     
                                    Don’t get me wrong, I grew up with Myfords and have recently acquired an ML7 with a Tri-Leva selector. This will be a refurb project although mostly cosmetic, as there is no detectable wear on any of the critical components.
                                     
                                    As the drawings and rights to design for the Myford lathe have now been bought out, I would suspect we will see far eastern clones appearing in the near future at a lower price, albeit with possibly a lesser attention to detail and quality.
                                     
                                    We can all dream of the ultimate machine but that will attract the ultimate price.
                                     
                                    I dream of a DSG or a Monarch 10ee but I doubt if I will ever own one, so I will continue to buy what I can afford and modify to suit.
                                     
                                    regards
                                     
                                    CB
                                    #72040
                                    Michael Gilligan
                                    Participant
                                      @michaelgilligan61133

                                      CoalBurner says: “Many of the chinese lathes are getting very close to an ideal machine, build quality aside!”

                                      … which nicely sums up the essence of our problem.

                                      As John Ruskin is oft-quoted:

                                      1. ?There is hardly anything in the world that some man cannot make a little worse and sell a little cheaper, and the people who consider price only are this man’s lawful prey.?

                                      2. “The bitterness of poor quality Lingers long after the sweetness of low price is forgotten.”

                                      There are excellent notes on the “preparation” reqiured before use of the Chinese machines, on ArcEuroTrade’s site.
                                      … for proper comparison, we must include the cost of doing this work.

                                      MichaelG.

                                      #72042
                                      Jeff Dayman
                                      Participant
                                        @jeffdayman43397
                                        Well for me the prime requirement of any machine tool is rigidity. One of my major complaints about Far East lathes is that they fasten the headstock on to many of them with a couple of setscrews and a clamp underneath. One I saw had ONLY the setscrews fastening the headstock on. The beds are usually not beefy or X braced in the casting underneath either. The bed needs to be well designed and made in heavy cast iron in my opinion, not lightened for cheaper shipping. Bed does not need to be hardened for hobby use but if it is, fine.
                                         
                                        Second pet peeve about these machines is the very tall compound rest with a tiny saddle area supporting it down to the bed. No rigidity there at all.
                                         
                                        10″ swing (and motor with ballocks to drive it) would be great, 9″ is minimum.
                                         
                                        As others have said a good big spindle hole is very handy, ie 3/4″ min , 1 1/16″ is better.
                                         
                                        Camlock chuck for sure.
                                         
                                        Powered cross slide is a must.
                                         
                                        Belt or gear main drive is fine these days, I personally don’t want any complicated stepless brusher variable delinquency frive or other complicated electronical motor trickery that will go >poof< in ten years and no spares to fix it. Just a plain dumb reversible industrial single phase motor, with back gear and tumbler gearbox on the lathe is fine. 2 speed back gear would be a dream for that 10″ swing…
                                         
                                        Taper attachment would be a boon as well.
                                         
                                        Just my 2 cents – your mileage may vary….
                                         
                                        JD
                                        #72045
                                        Billy Mills
                                        Participant
                                          @billymills
                                          Here’s another go!
                                          1 DC brushless drive with 2 belts to two wheels dog clutch for Hi/Lo and instant stop, encoder wheel on spindle and brake to clamp spindle allows indexing of chuck.
                                          .
                                          2 Leadscrews with steppers and anti backlash nuts, encoder counting for DRO so electronic leadscrew and full anythreadyoucanthinkof screwcutting.
                                           
                                          3 Expanding single post toolholding a la Mike Cox exchangable for tool changer add on.
                                           
                                          4 NO top slide- don’t need it, with stepper drive to saddle and cross slide you dial in the taper.
                                           
                                          5 Headstock and ways might be skimmed plate on rectangular tube filled with epoxy granite
                                           
                                          6 Camlock Chuck, ER accessory and big hole down spindle to take plug for C5’s so Sir John don’t moan ( can’t G/tee this).
                                           
                                          7 So you get rid of the expensive mechanical bits,replace with cheap as chips bits, take whole thing upmarket as it is a CNC lathe with manual drive.
                                           
                                          8 Market it WORLDWIDE at a fair price. three sizes, Micro 2″ swing, 6″ swing 14″ swing
                                           gapless bed. ( much stiffer for material cost and weight)
                                          Only thing to stop it is that we are too stupid in the UK to get up and go.But we might be able to buy it from China in a year or two although they would cast it conventionally. ( Most of the heavy metal in a lathe does very little to add stiffness because it is too far from the spindle/ways/saddle/toolholding loop.)
                                           
                                           
                                          Happy dreaming
                                          Billy
                                           
                                           
                                           

                                          Edited By Billy Mills on 18/07/2011 20:11:40

                                          #72046
                                          JasonB
                                          Moderator
                                            @jasonb
                                            Billy sound like you want a small XYZ Proturn Does most of what you describe and available now from taiwan.
                                             
                                            J
                                            #72047
                                            Peter G. Shaw
                                            Participant
                                              @peterg-shaw75338
                                              My ideal lathe would be a metric Boxford ME10A. Mind you, I’m not sure if SWMBO would agree the present day cost!
                                               
                                              Regards,
                                               
                                              Peter G. Shaw
                                              #72048
                                              Billy Mills
                                              Participant
                                                @billymills
                                                Thanks Jason!
                                                Was just thinking about cost reduction and getting rid of iron and time by using a mechatronic approach. It’s an interesting question because lathes have had a very long development history yet the average manual machine is just about the same as a machine from 1900.
                                                This is just a little different from the evolution of -say- aircraft in the same period.
                                                 
                                                Anyway we all have our own ideas about machine tools-long may it be so.
                                                 
                                                Happy costing
                                                Billy.
                                                #72050
                                                Michael Gilligan
                                                Participant
                                                  @michaelgilligan61133

                                                  Here’s a thought …
                                                  A) The lathe should be built to the highest quality standard that can be achieved at the chosen price point.
                                                  B) The “starter version” must include all the “big bits” that are impractical for the typical customer to make, plus the facility to enhance it on a modular basis.
                                                  C) Customers would be encouraged to submit design ideas for bolt-on features … perhaps with prizes for the best.
                                                  D) The add-on modules would be available either “ready to fit” or as part-machined kits, or simply as drawings.

                                                  My point is … we need the best possible base upon which to build; not necessarily the longest list of features.

                                                  On a smaller scale; the traditional watchmaker’s lathe is a good example of this approach.

                                                  MichaelG.

                                                  #72071
                                                  Andrew Evans
                                                  Participant
                                                    @andrewevans67134

                                                    I think there would be a Market for a quality lathe in the range of 2 to 5k. Look at the Tormach Cnc mills in the states or the syil or seig Cnc mills. They are not cheap machines but seem to be selling. People do have money to spend on hobbies. In terms of manufacturing what about a lathe designed in the UK, manufactured abroad and then finished and quality checked back in the UK? That would reduce costs and ensure high quality.

                                                    I like the idea of modular machines using stock off the shelf parts as much as possible – motors, bearings, feed screws, spindles, tooling, electronics, handles. This simplifies manufacture and ensures parts availability in the future and at decent prices. The manufacturing process then concentrates on the core lathe, everything else is bought in. The lathe would be available at a basic spec but with extras like DROs designed in from the start – no retofitting needed just buy an off the shelf add on and plug it in / bolt it on. Basic design has to be rigid and well finished, big bore and cam lock spindle fitting makes sense. No plastic handles etc to give a quality feel.

                                                    Sales and support would be online only with no expensive showrooms to fund.

                                                    Just some ideas….

                                                    #72072
                                                    Steve Withnell
                                                    Participant
                                                      @stevewithnell34426
                                                      Starting with my basic lathe, what would make it perfect for what I need?
                                                       
                                                      It’s dimension’s are spot on for me – 5×22. Only one job in 4+years I’ve had it couldn’t be done. It sits on the bench too – leaving free space underneath as space is a massive premium for me.
                                                       
                                                      * Spindle throat needs to be one inch rather than 3/4
                                                      * Slotted cross slide
                                                      * More rigidity around the topslide/toolpost
                                                      * 25 cm more travel on the tailstock
                                                      * Lever locking on the tailstock
                                                      * Cross slide and topslide locks
                                                      * Good torque down past 50rpm
                                                       
                                                      Nice to haves I probably would not pay for:
                                                       
                                                      * Clutch
                                                      * Hardened bed
                                                      * Screw cutting gearbox
                                                       
                                                       
                                                      Of my seven “ideal” features, I’ve implemented the last 3, but the others are beyond me just now. I’ll get to the rigidity at some point I guess.
                                                       
                                                      Steve
                                                       
                                                       
                                                       
                                                       
                                                       
                                                       
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