US1446640A - Grinding machine - Google Patents

Description

Feb. 27, 1923. L4464 L. J. COONEY GRINDING MACHINE Filed Aug. 51, 1921 5 sheets-sheet 1 M%@M7 irm Feb. 27, 1923.

L. J. COONEY 'GRINDING MACHINE Filed Aug. 51, 1921 3 sheets-sheet; 2

Felb. 27, 1923.

L. J. COONEY GRINDING MACHINE Filed Aug. 51; 1921 3 sheets-sheet 5 LAi/VEENCE (9'.

GRINDER AND Application filed August 31,

To all. 007mm if may coowcm: 2 is a side elevation. hi9; 3 is a ver- Be it known that in LN \TCE ticai l line ill-lll oi F152. 2,

3 sect on on t ie I 8 and 9 are detail views, i loein iv iv Oi a citizen of the li nited dent of l ittshui'gh in the county 0' a s ction on the line gheny' am State or eiiiisylvenia F g Fig 2; section on the line VIV a new and useful intention in Grimlih oi Fig. 2, and Fig. 9 a section tln'oiigl the chines of which the following; is e.- speciii-ceeiid o" the chisel on the line EL-EX of tion. 7 F 8 The ini' cntion lzites to grinding nie- Referring; to the drawings. 1 is the gi iinder chines, eii peifticul 1 Wheel, 2 is he casing of the machine in for QlllMllP f which mounted the usual gearing for tors i the wheel, 3 is the handle for opermoiinted up 1 i o 2' ing and 4: is the rail cutter or tion with he: 1 heavy Ci1i1- -1 is mounted in the clamping acting in somewhat; the way as sleeve 5 in position so that its cutting edge chisels. The cutting wl s formed may be ground on the periphery oi: the on & ur' e aid T e handle is prefei'ahl x made inhevel first on one siee on the other. These eiit toioie bee composi (hying;

h the eccentric eisc 6 by means of mine or carriage of the attachoceilleted during; the grinding 0pizindle is mounted on the and 1-10 in place by the nut 8; Be-

it; t cessed so as to receive the eccentric disc is pensive the eeveiiti'ic collar 9 the rear side or? the e'nt lllYC i1 is the prom collei? being provided with the plate 10,

' l), to ho cl the parts in assembled pee; which xvi Work ceir'er is supported fi'oin the pidit and ship 2 9:" the maci ine, by means of the nding We the pe lT- t l1 and whose shank exiidii 52; Wheeh so that there eh s mm the soche; 12.011 the cashigiv heing ti "nib screw 1 he el due the use H in phi-1e 16 u iiah is el ll is provided at its outer end with he two 21 PRU oi ems 1 izmd l5. (Fig: 5 in connecseine i'n in which tion with Figs 1 and 2) UQOllWlllCll is slid to 501m t 1e cui ably id for lateral ad ustment the hlovlz i/ oeing' accomg i'iiiding progresses h means 7 hi'eaded through t 1e block 16, plished as the the screw in-cl operatin forth.

..1\ ex to provide :11 more V0 is perforated to recei v integral With the hiecl s the eiampi' g sleeve for the tool 4 21s iei'eiiiet'tei 111i .w The hlocl: i6 18 also provided s 1th the p111 and upon this pin is ch ine with pivoted 1:1; by imyens of the pivot pin 2 integral with send not. The eccentric collar 9 1s eULlDtQiFlXli'dil to receive the end or? the connecting rol 29, such rod being held in the collar bv t 1e thumb screw (Fig. 1). The rod 2i ;tends through the casing 26 being provid r intermediate its ems with the eitlargreinent 3i, held yieldingly zigeinst longi- L 'udinzil inm'einent by means oi the s ' n'ings 32 and 33.

The bl'll'iifiell 22 is rocked buck and hirth on the arm. 3% integral with the bracket and carrying a pi; 35 provided will-1 roller :56 at its outer end ei'igeging the slot 25 in the upper end of the arm. 24s This tll'l'illlg provides for the oscillziti 11 of the b 22 in :1 ve 'tical plane around the 21 (1S an axis so that in the cow oscillation the entire are-e or the tool to be ground is presented to the per. oi" the grinding wheel.

It is also desirlile that during;- the grinding operation the tool shell be moved back a: d forth in a horizontel plane so to cor the surface being ground from one side of the peri'pl'iery oi the grinding: wheel to the other so that the wear is distributed over such eriphery. This is accomplished by loving the pivot rod 2i (Fig; 3;} heel; and forth in the direction of the :EXis of such pivot rod. This is provided for by the diagonal slot 20 (Fig; 'l') which rcceires the roller head 37 of e pie which is screwed into the pivot rod 21. As the bracket 22 is oscillated and the pin 21 rotated about its axis,

i; is caused to reciprocate longitudinall giving; the desired hack and it. h movement of the bracket end tool in :1 horizontal direclion, thus carrying the cdgi'e ol the tool across the periphe Hi surface or the grindius: wheel.

The sleeve 5 which. carries the tool (Fig. is held between the ll-slmped part 39 'inl'cgr rzl \il'h the bracket and the bar 2.8 by the bolls will the sle wc being provided with :4, pnir oi lugs -i-i 3) which (it i-nijo correspondlug recesses in the feces o? the port 39 and bar 38 so that th sleeve 'zin rock latelailly in such purl ll) l hisroclilngg HIUYGEilQl'lh is used to secure lhe 'OllVQFZ. surfaces on the tool end es oposcd to the usual plane surinccs groun ipon a tool oi this kind. f; pair of coil .1 rinejs 63, shown iii dotted lines in hie. 3 and in full lines in Figs. lend 7. are located in recesses in the inner i'r'zice of the br ick ,t 22 opposite the sleeve so that the ends of the sprii bear against the sleeve and tend Q VJ hen the grinding u see ted the l engages the tool alone; the line we. 1*. t st such time the springs (33 are under compression. iii" the gri'indi prie r sud the meta 59 is cut away, the springs cause the sleere 5 to lugs 41, so that erred over the suij rives at the point (30, ment is stopped at this point 1):; means of the thumb screw 62 1) carried by the lug 61 on the sleeve 5 whose end is set to engage the side oi the bar 38. The cur eture of the surface 58 is secured in this way and corresponds to the are erounijl which the tool s rings Wi h the l time a center. Tihunib screws 42 xtend th 'ongh the sleeve and bars and engage the is es oi the qing; more tool The tool is held clamped and cen tcred primarily by the dew tedmw;

tion in Fig, i and comprin,

plate 43, the threaded sleeve thunib screw 45. in chi-n1 plate is first moved inward thus centerii (1' the tool hetweez the i faces 46, eater whi throne screwed down, thus reino holding the tool in position clined surfaces e6, whici soon become scorer and worn, thus their accuracy.

During the 'inding operation, adjustment of the tool toward the wheel is required to compensate fo tie cuttmg sway screw e5 is n he strain or rein the inof tl e metal 211 d this is nccomplis nesns oi the screw 17. i is led (his. in e our 11 sect of the pins 14- ond 15 so moves the lJlOCl'f 16 in and out o the end 15. A stop screw 4;? pro 1 a lock out d8 adapted to or the block 16 serves to limft such block.

in order to litirther steady the rod 4:9 l and 2} cs. l oi which is supported on the drive shaft '4" while the tends through the his weirdly from the bread-escrew 51 being: employer.

e the rod,

The position oi the tool loniriiiu 'lzi its sleeve is fixed h teens-i o? t; e 4 mounted on the rod wh ch rod is so i its inner end i on the 'lhc ston 59 is pr net the hid the lint sesu ed in position by the thumb screw fir er this adjustment the collar 56 is positioned against the stop and secured by ineens of ti e thumb screw 57. After one edge oil e Leo" is grounch the stop is removed to perini" "he reverse] 0*? posit on is nesnec up against pins 7 d with e the side of the movement 01:

the bracket 11; is prm'idcd one thehoss 'ound end ex- .1" or tool the tool the collar 50 .361 so that when the stop and in the plane oi" rotation thereof, and

(52) mounted tor reciprocation longitudiaally oi said axis to carry the edge of the ibute the wear over such my, and means or g1 ing the carrs movements during the rindin ion in a grinding machine, l or disc, a holder for a bevelled adapted to ol inclined towa d the wheel s cal es he bevelled in opo the periphery oi? the wheel, a tor the holder, pivotally supui axis parallel to the axis of re- 1": toe wheel so the tilting of the carriage CflI'ilGS the edge of the cutter along the periphery the wheel on an arc tangent thereto in the plane of rotation thereof, and (2) mounted :-:or rcciirccation longitudinally of said axis to carry tliz oi. the cutter tra sversely of the periphery oi. the wheel and distribute the wear over such pc- 1 ohery, means for rocking the carriage, and menus actur ed by said rocking movement ror reciprocating the carria e. 1 In combination in riding machine a grinding wheel or disc, a holder for a chisel or cutter to he bevelled, adapted to support the tool inclined toward the wheel with one of its edges to lo oevellcd in opposition to the periphery of the wheel, a, cam." tor the holder. pivotally sup orted on an axis parallel to the axis oi. ro- 5 tation oil the wheel, so that the tilting ol the cari'age moves the edge of the cuter along the periphery-cit the heel on an arc tangent thereto in the plane of rotation thereof, and (2) mounted for reciprocation on said axis to carry the edge of the cutter transversely oi? the periphei oi the wheel, means 'i or rocking he carr ;c, and cam. means z-oopcrat ith the axle tor moving it and the carriage longitudinally when such ca. ri age is rocked.

in combii'iatiou in a grinding machine, a griirdin5);- "l eel or dc, a holder for a chisel or cutter to be l support the tool inclined toward the wheel with one of its edges to be bevelled in oprinding wh V or cutter to he iort the m elled adapted to position to the periphery of the wheel, a carriagefor the holder, pivotally supported on an axis parallel to the axis of rotation of the Wheel, so that the tilting of the carriage moves the edge of the cutter along the periphery of the wheel on anarc tangent thereto in the plane of rotation thereof, and (2) mounted for reciprocation 011 said axis to carry the edge of the cutter transversely of the periphery of the Wheel, a

yielding connecting rod for rocking the carriage when the wheel is operated, and cam means co-operating with the axis for moving it and the carriage longitudinally when the carriage is rocked.

9. In combination in a grinding machine, a grinding wheel or disc, a holder for a chisel'or cutter to be bevelled adapted. to support the tool inclined toward the wheel with one of its edges to be bevelled in opposition to the periphery of the wheel, a supporting bracket, a carriage for the holder pivotally supported on the bracket on an axis parallel to the axis of rotation of the wheel so that the tilting of the carriage moves the edge of the cutter along the periphery or" the wheel on an arc tangent thereto, and mounted for reciprocation longitudinally of said axis, means for rocking the carriage from the actuation of the grinding wheel including a yielding connecting ele ment, means whereby the carriage may be adjusted on said bracket transversely of said axis, and means actuated by said rocking movement for reciprocating the carriage. 10. In combination in a grinding machine, grinding wheel or disc, a holder for a chisel or cutter to he bevelled-adapted to support the tool inclined toward the wheel with one of its edges to be bevelled in opposition to the periphery of the wheel, a supporting bracket, a carriage for. the holder pivot-ally supported on the bracket on an axis parallel to the axis of rotation of the wheel, and mounted for reciprocation longitudinally of said axis, in 7 ans lor rocking the carriage automatically including a yielding .conneeting element, means for adjusting the carriage on the bracket transversely of said axis, and cam means for co-operating with the axle for moving the carriage longitudinally of the axle when such carriage is rocked.

11. In combination in a grinding machine,

(2) mounted for reciprocation longitudinelly of said axis to carry the edge of the cutter transversely of the periphery of the wheel and distribute the Wear over such pe riphery, and means for giving the carriage its movement during the grinding operation the holder being pivotally supported on the carriage on an axis at right angles to the first axis whereby the holder and cutter may he swung on an arc toward the axis or" the wheel as the grinding operation progresses to secure a convex bevelled surface.

In testimony whereof, I have hereunto subscribed my name this (lay of Aug 19%.

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