Headstock BED Madc of close grained iron, heavily ribbed to withstand torsion and scientifically de- signed to eliminate defiection. HEADSTOCK Designed for marimum rigidity and heavy loads; compact back gearing below spindle, with conveniently placed lever. MOTORISING UNIT Built on to back of lathe bed, incorporating motor platform, p rovides self.contained machine in minimum space.
ML7 · 10 pp.
ML7 - Многофункциональная лата с изменяемой скоростью: руководство пользователя и сервис
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{EAVY DUTY LATHE ADMITTING 20" OR ither changewheels or 32" BETWEEN CENTRES quick change gearbox for leadscrew drive. drive either Tri-feva Speed Selector or plain or with clutch. CARRIAGE Boring table type cross slide of large area. Saddle elamp for facing. Peel-ofr shim adjust- ment for saddle keep plates. TOP SLIDE Arranged to swivel 63o either wifr with graduated base; Universal tool clamp plus provision for four tool turret. TAILSTOCK Quick action lever clamping to bed; thumb lever for barrel clamping; positive set-over for taper turning.
TYPES AVAILABLE Cat. No.
TyP" Descripcion Between Centres t0100 | t0 'c02 I c r003 YL7 ML7 11L7B r,,1 L7 B I,,117 ML7 t'1178 MLTB M L7T M LTBT M L7T M LTBT Basic flachine 20" Quicl Change Lathe Basic 14achine with 1466 clutch flcted 2C" 24" 20" I 0 i004 t0 r007 Quicl Change Lathe with 1455 clutch fitted Basic i'lachine 32 32 r0i008 t0i009 t010t0 1010rs r01016 r0/0r7 t0/0rB Basic Machine wirh 1466 clutch fltted Quick Change Lathe Quick Change Lathe wich 1465 clutch fitted 32 20" 20" )L Tri-Leva Speed Selector Lache wich quicl Tri-Leva Speed Selector Lathe (Changewheel machine) Tri-Leva Speed Selector Lathe (Changewheel machine) 32" Tri-Leva Speed Selector Lathe with guicl JL SPECIFICATION (mc/s admitting 20") Overall Length 3 ft.0l in Width across shears 4l in.
Depth of Shears I in. Swing over bed 7 in. dia. Maximum admitted between centres lft.8in. Swing in gap l0 in dia. Swing in gap in fronc of faceplate l] in. Depth of Bed 5'l in. Range ungeared Aerl ooareA 540, 357,200 I t0, 62, 35 when motor is fltted 870 to 47 r.p.m. Barrel bored No.2 MT Barrel bored through l! in. dia. Barrel travel .. 2J in. Sec over to front Set over to rear Alternative range with 2.1 in. pulley rtl In. it in. Area of saddle bearing on bed l9 sq. in. Swing over cross slide 4l in. dia Cross slide travel 5 in. A.rca of cross slide top (boring table area) 30 sq. in. Top sllde travel 2l in.
Top slide swings either side of zero 63' Top slidc and cross slide feed screws lO TPI Acme Micrometer dials (ll in. dia.) divisions 001 in. Leadscrew 8 TPI Acme Standard screwcuttint range 6-l l2 TPI Standard screwcutting range 25 to 4 mm. Standard flnest feed 0037 in. per rev. Centre height 3j in. Length of seating 7l in. Width of seating 4N in Front Bearing | | in dia. 2 in. Rear bearing I in. dia. | | in. Ball thrust I in. dia. Spindle nose register l f in. dia. i, in. long Spindle nose rhread ll in. dia... l2 TPI Spindle nose bored No. 2 MT Hole through spindle .1! in. dia. Backgear reduction 5 78 to I Size of headstock vee belt I in.. "A" Section Faceplate (8 slots) 6', in. dia.
Length of lathe including guard, 3 ft. 5 in. Widch of lathe including mocor, with cross slide full out 2 ft. l1 in. Width of lathe including motor, with cross slide in I ft.8l in Height of lathe from bench to centre poinr 9l in. Nett weight of bench lathe w'ith motorising equip- ment, but less electric motor | 65 lb. Overall length of cabinet stand 3 ft. 5 in. Height (to top of iack screws) 2 ft. l0| in. Overall width of cabinet stand I ft. 3l in. Nett weight of cabinet stand 120 lb. as above, except:- overall bed length, maximum admitted between centres, length of Lathe including guard, overall length of cabinet stand, all increased by 12".
Nett weight of bench Lathe, less motor 195 lbs Nett weight of cabinet stand 150 lbs. (except Quicl faceplate, catchplate, 4 in. diameter backplate, set of | 4 changewheels and-spacer, changewheel guard, two double-ended spanners, fr in. RSF v:tin R(F .^l; rock, key ror bearing ."0 'J.."t*f i"; ?l;t;?i; l'.Zf; t;;'E::: screw-cutting chart, centres for headstock and tailstock, two belt guards, vee belts and moror pulley.
MLTT & MLTBT TRI-LEVA SPEED SELECTOR LATHES PATENT No. 818947 give Instant spindle speed Selection Nos. l0/015 r0/0r6 l0/017 r0/0r8 Nos. f 0/0f 5 and 10/017, both type ML7T, admitting 20" and 32" respectively between centres, have the drive to the leadscrew by changewheels. Nos. l0/0f6 and 10/018, both type ML7BT, admitting 20" and 32" respectively, have the quick change gearbox for the leadscrew drive. I As the name implies, three levers are used for spindle speed selection. The incorporation of the unit does not, in any way, affect either the backgearing or the drive to the leadscrew.
I With all the levers in the disengaged position the Lathe spindle is disconnected from the countershaft and remains completely free from belt drag, the belts being "trapped" clear of the pulleys. Thus rotation by hand is easy and greatly facilitates "clocking" with a dial gauge, marking out, setting up, etc, With all the levers depressed, the Lathe spindle is held stationary by the combined grip ofall three belts. This provides a convenient light hold during such operations as hand tapping, marking out, etc., and when working with Myford Patent Collets, giving the required friction to enable the collet nose cap to be tightened or released.
Partial depression of any of the levers will permit "slipping" of the drive. The levers afford a sensitive control of the amount of slip, making this feature very useful when tapping blind holes, threading to shoulders with button dies, etc. The advantages of rapid changes become particularly noticeable when using production equipment such as the No. 1408 turret attachment, either with or without the lever operated collet attachment, since the high speed used for boxing down can be instantaneously reduced to a low speed for dieing.
The back gear key is still iust as accessible being covered by a hinged guard, An even greater degree of flexibility can be obtained by using the Tri-Leva in coniunction with a 2 speed motor. This combination gives 6 ungeared spindle speeds from 1,280 to 200 r.p.m., so that turning speeds can be more clearly matched to the correct speeds for.different diameters and operations, No. 20/03a TRI-LEVA Speed Selector as an attachment for an existing machine. No. 20/044 Tray Top Cabinet Stand generally as No,20/023 but fitted reversing and speed selector switches (see left hand column). No.
60/015 Reversing and speed selector switches for bench or wall mounting, with wiring and flexible conduit (see left hand column)-for single phase. No. 60/015 As above, but for three phase. No. 60/017 Speed selector switch only for bench or wall mounting (for use in coniunction with an existing reverse switch)-for single phase. No. 5{l/018 As above, but for three phase. No. 50/013 Two speed 2,85011425 r.p.m., 0.5/0.25 h.p. motor, for single phase. No. 60i014 As above, but for three phase.