USRE462E - Improvement in machinery for grinding and polishing metallic surfaces - Google Patents
Improvement in machinery for grinding and polishing metallic surfaces Download PDFInfo
- Publication number
- USRE462E USRE462E US RE462 E USRE462 E US RE462E
- Authority
- US
- United States
- Prior art keywords
- grinding
- lap
- polishing
- plates
- shaft
- Prior art date
Links
- 238000005498 polishing Methods 0.000 title description 22
- 239000002184 metal Substances 0.000 description 12
- 229910052751 metal Inorganic materials 0.000 description 12
- 230000000694 effects Effects 0.000 description 4
- 230000001105 regulatory Effects 0.000 description 4
- 241001519451 Abramis brama Species 0.000 description 2
- 241000282465 Canis Species 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 2
- 241000763859 Dyckia brevifolia Species 0.000 description 2
- 241000237858 Gastropoda Species 0.000 description 2
- 241001125879 Gobio Species 0.000 description 2
- 241000234435 Lilium Species 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910001651 emery Inorganic materials 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000036633 rest Effects 0.000 description 2
- 230000000284 resting Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
Images
Definitions
- This bed or table is to be made perfectly true on its upper surface by planing, grinding, or otherwise, and it is to be supported upon rollers which have gudgeons that run in suitable boxes on eachside of the frame-work of the machine, and are made adjustable by means of set-screws.
- the bed or table is to have a traversing motion from end to end, which may be given to it -by any of those mechanical devices which are used forsuch a purpose. It may, for examplagbe obtained by means of a revolving screw operating in the manner of that'equently used for carrying the slide-rest of a lathe back and forth;
- this table there is to be a grinding or polishing drum, or cylindrical lap, to which a continuous revolving motion is to be given, the outer diameter or periphery of such drum or lap being its grinding or polishingl surface.
- the shaft of this cylindrical grinding or polishinglap turns in suitable bearings, which are to be furnished with strong screw or other adjustments by means of which the position .of the cylindrical lap, or its distance from the table, may be regulated at pleasure to suit plates of different thicknesses or to determine the force with which the lap shall bear upon the plate to be ground or polished.
- the revolving lap is to have, also,ahorizontal traversing motion from side to side of the machine for the purpose of shifting continually the points of contact between the lap and the plate, thereby preventing the undue wearing of either in any particular part, and preserving' a true cylindrical surface on the lap and perfect tlatness' on the plate.
- This traversing motion may be given to the shaft of the lap by means of a revolving oscillating'crank and a connecting-rod, or by means of a grooved snail or cam-wheel acting upon the end of the shaft, or in any other of the modes of effect' ing this object which are well known to ma chinists.
- a shaft-mandrel like the mandrel of a lathe, is to be made to revolve in suitable collars or on centers, and this mandrel is to carry a circular disk or flat plate like the face-plate or chuck of a lathe, such plate being furnished with suitable means for holding in place the saw or other plate to be ground or polished.
- the Y chuck or face plate may be made to revolve veither vertically or horizontally, but I prefer the formber position, and have so represented it in the accompanying drawings.
- a grinding and polishing drum or vcylindrical lap similarA in all respects to that used for straight saws, is to be mounted on a suitable head in front of the revolving plate, which head may rest on a double V, or other suitably shaped bed, along which it may be guided like the sliderest of a lathe.
- rlhe head which carries the grinding er polishing lap is to have a traversing'motion given to it by means of a screw, a rack, and pinion, or other device, so that the order.
- the lap may be made to pass-back and forth periphery and center.
- the revolving lap is made adjustable, so that its distance from and the force with which it may be made to bear upon the plate to bc'ground maybe regulated.
- Another part of my invention consists in the manner of constructing 'the cylindrical grinding and polishing drum or lap.
- Those which have been hitherto made with grinding and polishing faces of metal have been formed either of a solid mass, or the cylin drical face or surface has consisted of a continuous rim or hoop of metal, and these laps frequently become untrue from expansion, are witndifliculty renewed and kept in order, and are attended with other inconveniences.
- My improved lap has its face or grinding and polishing 'surface formed of a number of separate plates of metal-say of half an inch, more or less, in thickness-which plates are to be placed around the face of ametallic hub which has a projectingrim on each side,between which the edges of the plates are to be clipped, one or more screws or bolts also passing through each plate, whereby they are securely fastened to the hub.
- the plates soarranged and affixed will not be disturbed by expansion and con traction, or from any other cause, while they are readily renewed and easily kept in perfect
- the line of junction between these plates I prefer to make passobliqucly across the face of the lap.
- Figure 1 is a side elevation of the machine as constructed for the grindingand polishingof straight saws.
- Fi g. 2 is a plan or top view of the same, and Fig. 3 a vertical section taken longitudially through its center.
- ⁇ -A A is a strong frame-work and standards of cast-iron, securely iixed on afoundation or ground-work, and properly connected together by cross-bolts and braces.
- the middle roller, C' may carry toothed wheels or pinions c, which may take in to racks d on the underside of the table and gw@ it the ldesired traversing motion.
- the roller C may receive its alternate rotary mo- .tion from the beveled-wheel c, which is driven 1n the reverse directions alternately by the these being actuated by clutches, or engagingand disengaging apparatus in any of the ways known to machinists, and which 1s not necessary to describe, as I do not intend to limit myself to any particular manner of efl fecting this object.
- C2 are pulleys upon stands to support the table.
- G is .the main body of the cylindrical drum or lap, by which the grindingand polishing are effected.
- D l) are metallic segments which surround the face of the hub E E, being ledges on each side of the hub, between which the segment-pieces are embraced.
- F F are screws by which the segment-pieces are fastened to a hoop or rim making a part of the hub. ⁇
- These cylindrical laps are to be supplied with emery, or with any other grinding or polishing powder, or other substance, mixed Vwith oil, water, or other fluid, according to the nature ofthe work to be performed.
- the cylindrical lap is mounted upon a shaft or axis, Il, passing through carrier-bearings I, (shown'by dotted lilies in Fig. 1,) placed bctween guides in the grooves ofthe standards A.
- a driving-pulley or ri gger, J which may receive its rotary motion from a drum or pulley on the shaft of the lirstmover.
- the motion ofthe lap should be very rapid-say about three hund dred revolutions in a minute-and its shaft 1n ay be supplied with different-sized pulleys or ri ggers to give different velocities thereto.
- the shaft 0 may be turned by means of a winch or otherwise, and thelap will be thereby raised or lowered.
- a shaft', m may be made to revolve by means of a band and pulley, h, or in any other convenient way.
- This shaft carries an adjustable crank-pin, t', connected to the shaftof the lap by means of a connectingrod, j, and the 'lap may thus be gradually and progressively moved across the bed by the machine, and the position of the actual grinding-surface be thereby constantly shifted
- the metallic segments may be composed of various metals or alloys, adapted to the ina-- the proper degree of force upon the bed mayM ln order to turn the screws K K simultaturning in bearings on brackets on the'tops i TETTE Pro BovERs, En Dufgsffion MISSING PAGE TEMPORARY NOTICE PATENT #1Q HAS BEEN SCANNED, BUT WITH MISSING PAGE(S).
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