RTM 270/B - Berco S.p.A

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Specific devices and automaticsA B CFig. 12Fig. 13 Fig. 14H yd raulic steady re s tA B DIt is small-sized steady rest andcan pra ct i cally be used with allc ra n k s h a ft types.It is fitted with a device, linked tothe upper shoe, for checkingcentering of cra n k s h a ft journals.A p p roach to and return from thewo r k p i e ce are hyd raulic andc o n t rolled manually, bya ctuating a leve r.S a fety microswitches pre ve n tfast automatic trave rse of thetable when the hyd raulic steadyrest is in working position.Wheel dresser for hyd ra u l i csteady re s tA B DShape and dimensions of thisgrinding wheel fa ce and ra d i u sd resser have specifically beendesigned for use on the “B”execution of the machine.It is mounted on the table,opposite the hyd raulic steadyrest, leaving the cra n k s h a ft inthe machine. The dre s s i n gdiamond is supplied only onre q u e s t .D PA/L signal light fixture fo rjournal lineupA B DIt is mounted on the top of theh yd raulic steady rest and isf i tted with a stylus that, oncec o r re ct journal wheel lineup isobtained, switches on a signall i g h t .S t a n d a rd outfitE x t ra outfitNot provided fo r
Fig. 15 Fig. 16Plunge feed device fo rgrinding fillets and diameterof the journalsA B DThis hyd ra u l i ca l l y- o p e ra t e dd e v i ce allows to obtain thewheelhead work feed, withp reset speed and travel, fo rgrinding the fillets and diameterof cra n k s h a ft journals (fig. 13).Oleomechanical tabletraverse and reverse unitA B DThis unit, which gives themachine the features of acylindrical grinder, is mostprofitably used in enginerebuilding shops in as much asit is often necessary to grindparts other than crankshaftssuch as bars, rods, etc.It consists essentially of:- a d.c. motor with electronicspeed adjustment for theautomatic work feed of thetable (traverse speed isadjustable from 5 to 300mm/min -2”+11 13 /16” perminute)- an oleomechanical unit forreversing table traverse,either manual or automaticvia limit stops sliding onto ascale secured to the table.Fig. 12H yd raulic steady rest and DPA / Lsignal light fixture mounted on itst o p .Fig. 13Wheelhead work feed devicec o n t rols panel.a) Feed speed adjustment knob (fo rgrinding the cra n k s h a ft journals)with fast approach lever;b) Wheelhead travel adjustmentk n o b ;c) Knob for engaging anddisengaging the wheelheadautomatic fe e d .Fig. 14Wheel dresser for hyd rauulic steadyre s t .Fig. 15C y l i n d r i cal grinding on the Berc o<strong>RTM</strong> <strong>270</strong>, “D” exe c u t i o n .Fig. 16E l e ct ronic conve rter for theautomatic table work fe e d .
Page 1 and 2: RTM 270Crankshaft grinderA Companyo
Page 3 and 4: Fig. 4Workhead where the fo u rm ov
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Page 13 and 14: Fig. 28Fig. 24Grinding a center wit
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RTM 270/B - Berco S.p.A

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