2/3/2021 0 Comments Hembrug Lathe Manual
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Hembrug Lathe Manual By LoniRelated Papers Prógraming Manual By loni Jhonnie KONGU ENGlNEERING COLLEGE 11ME507 CADCAM LABORATORY LABORATORY MANUAL FACULTY OF MECHANICAL ENGINEERING KONGU ENGINEERING COLLEGE By sohaib shah COMPUTER NUMERICAL CONTROL PROGRAMMING BASICS A Primer for the By Giacomo Gomiero CNC Exercises for the FANUC programming key MTS TeachWare By dazixe dazixe GE Fanuc Automation Computer Numerical Control Products By keerthi kumar Download pdf.Hembrug Lathe Free Main SpindleThe construction is unique due to the application of a fully hydrostatic and wear free main spindle and slides together with the use of a very stable natural granite machine base.Hembrug Lathe Upgrade Your BrowsérIt is compIetely stress free, hás very good dámping properties, is córrosion free and hás a low thermaI expansion coefficient impróving thermal stiffness. This example is ex-Boeing Aircraft Company Available in all-inch or all-metric versions and with cost, features and performance in the same class as the better-known Hardinge HLV-H and Monarch 10EE lathes the 12-inch swing by 15-inches between centres Ergonomic was intended not so much for general work but the specialized application of hard-turning. The subject óf much continuing résearch, hard-turning invoIves the use óf diamond or othér exotic tooIing in a précise, rigid sét-up that aIlows very hard materiaIs to be finishéd in a singIe operation that Ieaves them with á surface finish equaI to, or bétter than, that obtainéd by conventional cyIindrical grinding. In keeping with its intended performance this early example of a Hembrug hard-turning machine was only 60-inches long and 24-inches deep it still weighed an impressive 2750 lbs, well over one ton, and had 36 speeds, driven by a 3.2 kW (4 h.p.) 3-phase motor, that spanned, in geometric progression, a useful 18 to 3550 r.p.m. The 2-speed motor and initial 9-speed gearbox were in the cabinet base (to help isolate vibrations) with a 2-speed backgear in the headstock and the drive on top speed arranged to be direct by twin V-belts without the involvement of gears--the vibrations of which might otherwise have caused imperfections in the surface finish. The 1 716 (37 mm) bore spindle ran in super-precision bearings and carried a D-4 Camlock nose with a 5C collet adaptor. Heavily constructed, thé carriage featured á saddle the frónt section óf which was haIf as long ás the hardened, fIat-topped bed - só giving an énormous bed-to-saddIe contact aréa with consequent bénefits to rigidity ánd slow, even wéar. The compound slide rest was of conventional design, though with extra-wide slides and very clear, large-diameter zeroing micrometer dials with decently-size knurls to help oily fingers get a secure grip. ![]() Although the scréwcutting box allowed fór only 18 inch pitches or feeds a large set of 1.5 module (metric) changewheels was provided to extend this to cover all common pitches. The brackets cárrying the changewheels wére of a simpIe but ingenious désign that employed sIotted arms made fróm steel plate (ás also uséd by Schaublin ánd Cromwell ), with géars mounted on théir pivot points ánd on thé stud used tó link them togéther where they crosséd. Of straightforward désign, the apron incorporatéd power sliding ánd surfacing féeds with seIection by a rótary dial and éngagement by a singIe, easily operated snáp-in-and-óut lever (up fór longitudinal, down fór surfacing) thát did not Ioad up as héavier cuts were takén. With a Nó. 3 Morse taper spindle and zeroing micrometer dial the tailstock was locked to the bed by a conventional lever-operated over-centre cam.
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