Cartridge and block spindles - Gilman USA

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Special fast track design,close tolerances eliminatedadjustment mechanismSpindlesNo. 2002Idea bulletinThree spindlecluster moduleApplicationThree spindle cluster module foran outdoor power equipmentmanufacturer’s engine transferline.Gilman USA’s design produced suchaccurate centerline locations thatthe requirement for an adjustmentcapability was eliminated.ChallengeOn time delivery and tolerancesfor spindle centerline locationwithin the work envelopewere critical issues for this job.Another important factor wasthe customer’s desire to usespecial tooling with the units.SolutionGilman USA worked closely withthe customer to establish andmeet the necessary deliverydate. In fact, Gilman USAwas able to ship a few daysearlier than the required date.This timing was noteworthy,considering the specialspindle shafts necessary toaccommodate the customer’sdesired tooling.The issue of spindle-to-spindlecenterline location toleranceswas where Gilman USA’scommitment to the best inmanufacturing technologyallowed a finished productthat exceeded the customer’sexpectations. Originally, thedesign called for adjustmentsto be built into the assemblythat would allow on-site“steering” of the three spindlecenterlines to keep their relativelocation in spec. The GilmanUSA SIP Jig Borer allowed suchaccurate bore location that therequirements for “steering”adjustments were dropped fromthe design specifications by thecustomer. Of the original borelocation specification of .0005”,Gilman USA’s actual test resultsof the complete assembliesshowed bore locations accurateto within .0002”. The clusterspindle modules were mountedon Gilman Hardened Way slideassemblies. The slides weredriven by hydraulic cylinders.52 ©2011 Gilman USA, LLC
Precision Machine Tool ComponentsThree spindle cluster moduleNo. 20027.0011.00014.500R 1 1/45/16-18 TAP 5/8 DP (2)8.7689.518SPINDLE NOTES:- PRELOADED PAIR, ABEC 7,15 ANGULAR CONTACT BALL BEARING,MEDIUM PRELOAD 55 mm I.D., NOSE END.MEDIUM PRELOAD 45 mm I.D., DRIVE END.- SYNTHETIC GREASE LUBRICATION.- LABYRINTH SEAL EACH END.- MAXIMUM THRUST INTO SPINDLE 394 LBS.- OPERATING SPEED:SPINDLE #103 - 4620 RPM MAXIMUMSPINDLE #104 - 4620 RPM MAXIMUMSPINDLE #115 - 2310 RPM MAXIMUM- VIBRATION SPECIFICATION PER LAMB LV 2.0FILTERED READINGS FOR CLASS 7 BALL BEARINGSVELOCITY, AND ACCELERATION ONLY.- SPECIAL PAINT. CUSTOMER SUPPLIED.- TOLERANCES MEASURED AT 74 F.1/8-27 N.P.T.F.AIR PURGE INLET5-10 PSI CLEANDRY AIR.Front view16.133.1310.502.5014.758.734 .0013/8-24 TAP 11/16 DP. (4)ø3.250 B.C. - 90 APART.133.001.25 1.509.502.381.752.922 .0011.001.00.75ø1.75 TYP.3.469 .00110-32 TAP 1/2 DP. (2)3/8-16 TAP 3/4 DP. (2) ø3.250 B.C. - 180 APART .7501.5003.125 .00113.50014.25015.00.5001.254.006.516 .00110.000COOLANT UNIONPILOT ANDTHREADø.6556/.6560 PILOT5/8-18 L.H.THREAD17/32 THRU HOLE1/4 SQUARE KEY(2) EACH SPINDLE180 APARTM30x1.5mmTHREADTYP.ø1.1800/1.1795 TYP.DRILLED FOR 1/2SOCKET HD. C.S. (6)GRAVITY DRAIN9.75010.385.2502.000.750ø.751 .001 TYP.ø1.7501 .0001 TYP..500GRAVITYDRAIN3/8-16 TAP 3/4 DP. (2)(1) NEAR SIDE(1) FAR SIDEBack viewSide viewFLOORDetailsThe three spindle clustermodule was designed for oneof six stations on a dial-typemachine. The three spindlesare belt driven from the rear.Two spindles operate at 4,620RPM and one spindle operatesat 2,310 RPM. The spindlesare positioned to machinethree areas of a casting foran outdoor power equipmentengine part. (Lawn and Gardenequipment engine.)The spindles are based on aGilman 4000C (-X2M-SBM)spindle with 55mm bearings atthe nose and 45mm bearings atthe drive end. The bearings aremedium preload ABEC 7, 15°angular contact units. Syntheticgrease lubrication and labyrinthseals are used. Air purgeprovisions are designed intoboth the front and drive endsof the spindles with fittingson the assembly housing.Coolant unions allow coolantthrough the tooling.©2011 Gilman USA, LLC53
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