Precision matthews PM-1440GS Manual Download Page 1

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PM-1440GS v3 2020-10

Model PM-1440GS Lathe

High precision 3 HP gap-bed machine, with 2-axis DRO

2 inch spindle bore, with stock-centering spider

D1-5 camlock spindle mount

40 in. between centers, 14 in. swing over bed, 19-3/4 in. over gap

8 spindle speeds from 60 to 1800 rpm

Multi-speed gearbox for full-range screw cutting, TPI & mm pitch

Bidirectional power feed for saddle & cross-slide

Weight, including cast iron stand & coolant system 1800 lb

PM-1440GS standard configuration

Includes 2-axis DRO, 3-jaw (reversible) & 4-jaw chucks, faceplate,

coolant system, footbrake, worklight, steadies, wedge-type QC toolpost, assembled on cast iron stand

Summary of Contents for PM-1440GS

Page 1: ...s 14 in swing over bed 19 3 4 in over gap 8 spindle speeds from 60 to 1800 rpm Multi speed gearbox for full range screw cutting TPI mm pitch Bidirectional power feed for saddle cross slide Weight incl...

Page 2: ...from November 2016 There may be detail differences between your specific machine and the information given here with little or no impact on functionality Please email us if you have questions about an...

Page 3: ...over head hoist or forklift with slings and or chains all items rated for a total weight of at least 1 1 2 tons To lift the machine clear of the pallet use 1 inch diameter steel bars through the hole...

Page 4: ...front to back In other words no warping Make sure all leveling mounts and or shims are properly weight bearing firmly in contact with the floor Check and ad just level from end to end using a precisi...

Page 5: ...eed Direction lever to its center OFF position Figure 1 8 9 Check that there are no clamps or locks on moving parts 10 Check that the footbrake treadle is released UP 11 Set the saddle and cross slide...

Page 6: ...ut a cylinder of uniform diam eter over its entire length In other words no taper Leveling of the lathe is a part of this see earlier in this section Equally important is the alignment of the center t...

Page 7: ...lide The power feed shaft is driven through a friction clutch that allows the saddle to be stopped precisely at any point along the bed The 2 inch bore spindle comes with a stock centering spider and...

Page 8: ...n Drive system Belt drive with 8 speed gearbox Low range rpm 60 100 170 265 High range rpm 420 690 1150 1800 Carriage drive thread cutting Leadscrew 8 tpi Inch threads Choice of 42 from 4 to 112 TPI M...

Page 9: ...n be hazardous Be sure the work area is properly lit Never leave chuck keys wrenches or other loose tools on the machine Be sure the workpiece toolholder s and machine ways are secure before commencin...

Page 10: ...re in Section 1 STOP the motor before changing speed Don t use JOG unless the gears are fully meshed Figure 3 3 Vee belts external change gears Firm finger pressure here should deflect the Vee belt ab...

Page 11: ...users add packing pieces even custom made cradles to as sist straight line installation and removal Before installing make certain that the mating surfaces of the chuck faceplate and spindle are free...

Page 12: ...install the chuck without tilting see Figure 3 8 then gently turn each of the cams clockwise snug firm but not locked in this first pass Figure 3 7 Protect the lathe bed 4 Check that each of the cam m...

Page 13: ...al indication of the offset is provided by a scale on the back surface but this is not a reliable measure for precise work In practice the only way to determine the offset precisely is to cut and try...

Page 14: ...ely stopping the saddle at a precise location set by the stop Figure 3 16 The clutch comprises a pair of spring loaded steel balls bear ing on a detent disc driven by the saddle feed gearbox Spring pr...

Page 15: ...thick Be sure the gears are lubricated Saddle X slide Saddle X slide Saddle X slide Saddle X slide FATX 0 002 0 0005 0 002 0 0006 0 003 0 0007 0 003 0 0008 FASX 0 003 0 0009 0 004 0 0012 0 005 0 0014...

Page 16: ...l and the corresponding point on its adjacent tooth A matching worm has a Linear Pitch of the same value In other words the thread pitch of the worm is also 4 712 mm In the table the setup for this is...

Page 17: ...point threads are cut in 10 or more successive passes each shaving a little more material off the workpiece To make the first thread cutting pass the leadscrew is run at the selected setting table on...

Page 18: ...suming that the compound is set over at between 29 and Figure 3 20 Threading dial visualization for selected U S threads Minimize wear by swinging the dial indicator assembly away from the leadscrew w...

Page 19: ...usher screw STEADY FOLLOWER RESTS The hinge type steady rest Figure 3 23 can be mounted any where along the lathe bed It makes possible cutting opera tions on long slender workpieces between centers o...

Page 20: ...im is now to match runout at the spider end with runout at the chuck end usually adjusted for zero unless a deliberate offset is called for Progressively tighten the spider clamp screws to grip the wo...

Page 21: ...in mind that the ratio of product to water is important too much water causes excessive corrosion and other problems Check the mix from time to time using a refractometer If this is not available make...

Page 22: ...ting oil Approximate quantities required Headstock 4 quarts Saddle feed gearbox 2 quarts Apron 1 quart Ball oilers ISO 68 way oil such as Mobil Vactra No 2 or equivalent Machine ways dovetails ISO 68...

Page 23: ...Replace the drain plug To refill the gearbox use a funnel attached to a flexible plastic tube in serted into the fill hole Add oil to the halfway mark on the sight glass about 2 qts APRON GEARBOX DRA...

Page 24: ...ee part assem bly on the underside of the bed way at the back of the lathe It comprises a support bar attached to the carriage and two separate gib strips each with two adjusting screws Figure 4 8 Tai...

Page 25: ...he outer end of the leadscrew shaft An in ternal locking set screw bottomed in the well prevents loos ening of the flange screw To correct backlash due to loose coupling between leadscrew and thrust b...

Page 26: ...Minor damage may be cor rectable by skimming otherwise consider replacing the item The brake pads should be clean evenly worn showing no sign of oil Minimum pad thickness is 4 5 mm about 0 18 If nec e...

Page 27: ...rill rod snugly between centers as Figure C Lock the tailstock 6 Set a dial indicator on the cross slide to eliminate vertical error use a flat disc contact not the usual spherical type if a disc cont...

Page 28: ...protruding Figure E Center drilling is not need ed 1 Adjust the chuck for minimum runout at position 1 2 Check the runout at 2 Pointer movement when traversing is not a concern at this stage 3 If the...

Page 29: ...tion Figure A1 Misaligned headstock In this illustration the workpiece diameter increases as the cut ting tool moves toward the chuck Correct this by screwing in A a fraction of a turn to rotate the h...

Page 30: ...adjusting the screws set into a tab rail below the headstock Figure A4 Figure A3 Misaligned headstock In this illustration the workpiece diameter increases as the cut ting tool moves toward the chuck...

Page 34: ...34 Copyright 2020 Quality Machine Tools LLC PM 1440GS v3 2020 10 STAND COMPONENTS Fig 1a There may be detail differences between this representative drawing and the machine as supplied...

Page 35: ...35 Copyright 2020 Quality Machine Tools LLC PM 1440GS v3 2020 10 LATHE BED COMPONENTS Fig 1b There may be detail differences between this representative drawing and the machine as supplied...

Page 36: ...Bearing cover Z4149 41 Set screw M8 10 Z4150 42 Feed shaft Z4151 43 Pin Z4152 44 Set screw 8 16 Z4153 45 Collar Z4154 46 Motor control lever Z4155 47 Knob Z4156 48 Screw M6 16 Z4157 49 Bracket Z4158 5...

Page 37: ...right 2020 Quality Machine Tools LLC PM 1440GS v3 2020 10 HEADSTOCK 1 Fig 2 FEED DIRECTION SPEED RPM H L RANGE There may be detail differences between this representative drawing and the machine as su...

Page 38: ...M8 12 Z4221 19 Washer Z4222 20 O Ring 30 3 1 Z4223 21 Flange Z4224 22 Screw M6 35 Z4225 23 Set screw M6 16 Z4226 25 Shift tongue Z4227 Ref Description Part 26 Shaft Z4228 27 Collar Z4229 28 Steel ball...

Page 40: ...10 Z4264 61 Key 8 20 Z4265 62 Key 6 120 Z4266 63 Rocker stud Z4267 64 Gear collar Z4268 65 Circlip 35 Z4269 66 C Shaft Z4270 67 Key 5 50 Z4271 68 Gear 29 2 Z4272 Ref Description Part 69 Gear 46 2 Z427...

Page 41: ...2020 Quality Machine Tools LLC PM 1440GS v3 2020 10 HEADSTOCK 3 Fig 4 Not shown spider assembly LH end of spindle 105 There may be detail differences between this representative drawing and the machin...

Page 42: ...eal Z4333 130 E Shaft Z4334 131 Spacer Z4335 132 Screw M5 16 Z4336 133 Spacer Z4337 134 Circlip 20 Z4338 135 Gear 37 Z4339 Ref Description Part 91 Spanner nut Z4295 92 Collar Z4296 93 Flange Z4297 94...

Page 43: ...Bushing Z4350 12 Bushing Z4351 13 Key 5 20 Z4352 14 Bushing Z4353 16 Gear quadrant Z4354 17 T nut Z4355 Ref Description Part 19 Shaft Z4356 20 Bushing Z4357 21 Gear 61T Z4358 22 Bushing Z4359 23 Wash...

Page 44: ...44 Copyright 2020 Quality Machine Tools LLC PM 1440GS v3 2020 10 SADDLE FEED QC GEARBOX Fig 6 There may be detail differences between this representative drawing and the machine as supplied...

Page 45: ...Gasket Z4442 72 Cover plate Z4443 73 Screw M4 12 Z4444 74 Gear 36T Z4445 75 Roll pin 4 28 Z4446 76 Roll pin 4 18 Z4447 77 Output coupler feed shaft Z4448 78 Splined shaft Z4449 79 Oil Seal Z4450 80 S...

Page 46: ...46 Copyright 2020 Quality Machine Tools LLC PM 1440GS v3 2020 10 SADDLE FEED QC GEARBOX Fig 7 There may be detail differences between this representative drawing and the machine as supplied...

Page 47: ...r arm Z4486 116 O Ring 17 1 8 Z4487 117 Screw M4 10 Z4488 118 Key A3 14 Z4489 119 Arrow disc Z4490 120 Screw M8 12 Z4491 121 Spring 1 5 20 Z4492 Ref Description Part 122 Steel ball 1 4 Z4493 123 Shaft...

Page 48: ...48 Copyright 2020 Quality Machine Tools LLC PM 1440GS v3 2020 10 SADDLE CROSS SLIDE COMPOUND Fig 8 There may be detail differences between this representative drawing and the machine as supplied...

Page 49: ...ib plate Z4555 35 Screw M8 Z4556 36 Oiler Z4557 37 Set screw M6 Z4558 38 Wiper Z4559 39 Backing plate Z4560 40 Screw Z4561 41 Set screw M6 Z4562 42 Nut Z4563 43 Screw M8 Z4564 44 Gib support Z4565 45...

Page 51: ...w M8 50 Z4637 37 Dial indicator housing Z4638 38 Helical gear 32T Z4639 39 Washer Z4640 40 Nut M8 Z4641 48 Drain plug 1 8 Z4642 49 Split nut indicator Z4643 50 Sight glass Z4644 Ref Description Part 5...

Page 52: ...yright 2020 Quality Machine Tools LLC PM 1440GS v3 2020 10 TAILSTOCK Fig 10 Tailstock locking lever not shown There may be detail differences between this representative drawing and the machine as sup...

Page 53: ...Z4692 10 Screw M6 16 Z4693 11 Screw M6 10 Z4694 12 Quill lock lever Z4695 13 Quill lock rod Z4696 14 Screw Z4697 15 Screw M10 45 Z4698 16 Washer Z4699 17 Handle Z4700 18 Shoulder screw Z4701 19 Flange...

Page 54: ...ription Part 7 Knurled nut Z4722 8 Upper casting Z4723 9 Nut M6 Z4724 10 Screw M6 18 Z4725 11 Screw M6 30 Z4726 12 Clamp screw Z4727 13 Dowel pin 5 24 Z4728 14 Lower casting Z4729 15 Nut M12 Z4730 16...

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