FITTn\lG AND USE OF ATT eH ENTS-(contd.) graduated 45 degrees each side of the vertical centre line. An arbor for mounting between centres and driven by the lathe driver piate is available to take I in. bore cutters. Machining by this means is, how- ever, restricted to thin work and so, wherever possible, face or end milling is recommended. Face and end mills together with Woodruff key cutters can be provided having morse taper shanks for direct fitting to the spindle nose. CQolant Pump. The electric pump unit is housed inside the cabinet base and access is through the louvre at the R.H. end of the cabinet. Feed StQPs. (i) Micrometer Carriage Stop.
Clamps to the front vee bed way and used for accurate machining of shouldered work. The screwed spindle is fitted with a micrometer dial having O'OOI in. or '02 mm. graduations. Mining and Gean::utting Attachment. As in the previous case, this attachment is mounted on the comDound slide in place of the rooIpos!. On the vertical slide assembly: of similar construction to the milling attachment, is fitted a support for the work arbor together with indexing mechanism. Cutter arbor add cutter are mounted be- tween the lathe centres, the drive being by driver plate and pin.
It is important that, when setting up for gear cutting, the work arbor be exactly at right angles to the cutter arbor and the cutter directly under the centre line of the work arbor. Gears up to 7 in. diameter can be cut and cutters covering a wide range of gear pitches are available. Four Position Carriage Stop. Similar to the above, this unit clamps to the front vee bed way and is used for multi- shouldered work. The indexing body contains four adjustable screws each of which can be used in turn to control various shoulder lengths. (iii) Cross SEde Stop. Is located on the cross slide ways and is used en facing operations. Dividing Attachment:.
Accurate indexing of the lathe spindle is achieved by use of this attachment. Work mounted in the chuck, on faceplate or between centres can be indexed for operation such as graduating, slotting, key seating, etc. The attachment fits on the top changewheel shaft after removal of the gear, the hinged guard re- maining open whilst in use. A very wide range of divisions is possible with the standard index plate, but special plates can be provided when necessary. Bed Turret. This attachment is clamped to the bed ways replacing the tailstock. It comprises a lever operated slide of 4 in. stroke length with a six station automatically indexing turret, each station having an adjustable stop screw.
Supplied with the lathe, the turret head is bored suitable for I in. diameter tool shanks but otherwise is left solid for boring in situ to ensure perfect alignment with the headstock centre. This attachment cannot be used with an extended cross slide or with hydraulic copying equipment. Boring Table. This attachment fits directly on to the saddle. A boring bar with six cutters for usc between centres can be supplied. To fit the table, remove the complete cross slide by turning the handwheel until the slide becomes free and can be taken from the rear of the carriage. Replace by the boring table, feeding on to the screw which is operated in the reverse direction.
Place the boring bar between the lathe centres and drive by means of the driver plate. Cut-off Slide. Used for parting off and facing operations. This quick acting lever operated slide, with front and rear toolposts, is clamped to the bed ways immediately in front of the chuck. Additional Equipment. A wide selection of equipment available includes chucks of all sizes within the capacity of the lathe, t?ilstock drill chuck, rotating centre, half centre, pipe centre, turning tools and tool holders, etc. FQurway Toolpost:. It is self indexing and positively located. This unit replaces the standard type tooIpos!. American Toolpost.
Of the recognised American pattern with swivelling base plate and single clamp screw. Two Speed Equipment:. Spindle speed ranges can be doubled by fitting a two speed motor and selector switch. The standard is 34 to 1500 r.p.m., but other ranges can be provided. 11