Патент USA US2406780код для вставки
Patented Sept. 3, 1946 UNITED 2,400,780 STATES ' PATENT Y OFFICE 2,406,780 ' ' rRoFnmGMILLING CUTTER . Alois Kutscha, Chicago, Ill. . .Application vApril '122, 1943, Serial No.484,016 .5 Claimsj (ci. 29-105) .1 Y l The present invention relates to a milling cut ter -assembly having a ¿plurality Iof .spaced »arms each adapted -tc carry abutting blade er bit ¿for ,milling profiles,-etc. work. ¿ „ - ing the position of the cutter blade ror bit 'with in its `mounting »after `it has become worn vandre sharpened. Figiure -6 >Each blade Fer -bít 'is .mount .ed in -position »to -mill longitudinally and radially of the .axis of the cutter head to ,thereby ‘most eiîectively mill profiles or to'recess a »castingor other v y ' lIîhe invention further fcomprehends a novel means and manner of adjusting each :cutter bit .or blade »within its ’mounting to :assure fop “timum `cutting .eiîect and to‘insure or Ypermit .most effective use .of athe bits Yor blades and .for 'a .maximum period. -It‘-will -be readily appreciated a view-'showing in .-front elevation an illustrative embodiment of .a- cutter bit or blade, the `initial positionof this -cutter .blade -or bit and the -novel manner ‘of mounting :it being shown in dotted outline, and .subsequently îad-justed -position of the'rzblade `being shownzin Kfull outline. . v -~ 1 ' > f ' Referring more particularly to the embodi- v .ment -selected to illustrate the invention, the novel Vmilling cutter assembly is shown »at il Vand provided with »a plurality of spaced «projections from 'the illustrative :embodiment of _cutter vhead 15 2 providing -a novel support nand mounting `for a .plurality of cutter :bits ,or blades 3. The assem herein disclosed .that lthe spaced arms ,or pro bly is shown Y'as mounted .upon and .rotatable jections are -so constructed and arranged as ‘to .from :a vertically arranged .shaft H1 .driven from reffect -a considerable saving in metal over prior any suitable .source ,of power. «Each Íprojection types .of heads, :and that 4they novel construction `of cutter ybits ~or blades is Asuchas to >alsoallow 20 .is-slottedcr 'recessed at xoneside thereof at 5 :for ¿for an appreciable :saving inthe high grade 4tool steel necessary .for Atheir `cutting edges lor rsur faces. ‘Forexampla the body .of f each 3bit -orfblade may be of :a relativelycheapìmetal >with-»only -the >cutting edges of a high grade tool steel. ' ^ Further objects are to ¿provide a construction 'the reception-of one »of the-‘cutting bits-or -blades Q3 land with «the outer surface of this VAprojection which may be preferably tapered fat «6 and :pro vided three openings Tl .sui-tablyspaced apart fand »arranged Tin »triangular formation 'for ithe re fception Y.ef' locking bolts »8 l‘carried »in similarly ar ranged recesses Yor `.openings :in a locking -plate A9.l Each cutter -bit or blade Íis preferably Yprovided `with ñve lopenings =|-0 with 'three vof these Aopen- .of maximum simplicity, efficiency, economy and ‘ea-se of >assembly fand operation, and -such 'further objects, advantages and-.capabilities as `will vlater more fully Vappear ïand ;a-r_e .inherently possessed 30 yings 'spaced -in the same Vmanner ‘as .the openings thereby. ’ . The 'invention further .resides inthe construc tion, `combination 'and yarrangement y'of parts illustrated 'in the :accompanying drawing, and in the locking plate v9 and projection 2 -for'the reception of the Ylocking bolts and whereby Yeach :bit Ior blade is rigidly anchored and Ylocked in .posi-tion for operation upon'a Acasting or other while there iis vshown ‘therein a `preferred em v35 Work. As shown 4»in Figure »6, »each .blade «may be Iof bodiment, 'it is .to be understood `that the same is nsusceptible .of _modification >and `change, `and comprehends -other :.details, ` arrangements of parts, features and l-cofnstructions vwithout .de parting from the spirit fof the invention. In vthe drawing: ’ ‘ ' substantially triangular shape 1and provided with `cutting edges Vor surfaces vIleand Ylf2 whereby to milla profile such -as in the surface I3 and 'under-cut ~I4 of a casting-orotherobject I~5 upon 40 which »the milling cutter is operating. -Due .-t'o perspective nf zthe .novel »thefact that the cutting vbit or blade `isof «a high :cutter :assembly- shown in lpositinnîer 'milling and :grade steel, it :is highly >important that it be l’em ployed to its _maximum efficiency. This is con templated :and .the present invention ¿permits ythe surfaces Il and `I2 to be sharpened whenever .Figure 1 :is :a view profiling a recess in an object for roasting. Figure .2 'isa View .in side elevation of the cut ter head assembly but with several of the arms that becomes necessary. As shown in Figure 4, when a new cutting blade 3 is inserted into the cutter head or holder assembly. 50 with its inner edge abutting the shoulder or rear ward abutment of the recess, the three locking Figure 4 is an enlarged fragmentary view in removed to more clearly show the manner of attaching the cutter tool or head to the shaft. Figure 3 is a top plan view of the cutter head horizontal cross-section through the mounting or bolts 8 project through the aligned openings l0 support for a cutter blade or bit and taken on in the blade or bit 3 and lock this blade rigidly in position. Whenever the surfaces Il and I2 55 become suiñciently Worn, the blade may be re the line 4_4 of Figure 2. ` Figure 5 is a View similar to Figure 4 but show ' 2,406,780 4 3 moved and sharpened along surfaces substan shoulder, a retaining plate substantially conform tially parallel with those of Il and I2 and then again inserted into the holder as shown in Fig ure 5. At such time, the blade being of less ing to the shape of the recess and provided with a plurality of spaced locking bolts passing through aligned openings in the bit and anchored in dimensions than when new or initially applied, two of the locking bolts 8 in the plate 9 are pro aligned openings in the projection, and additional openings in the bit for receiving certain of the jected through the other two openings l0 in the locking bolts and mounting the bit outwardly of bit or blade and the third locking bolt 8 in the plate engages the rear surface or inner edge of the bit or blade and provides an abutment for its initial position and in which position one of the bolts provides an abutment for the rear edge of the blade. 3. A cutting tool for a machine for milling pro iiles comprising a cutter head having spaced out wardly extending projections each to mount a vcutting bit, one side of each projection recessed for a greater portion of its length and provided with a shoulder, a cutting bit having two of its edges exposed for milling purposes and another preventing retraction and rigidly holding each bit or blade in position, as more clearly shown in Figure 5. Thus, the purpose of each of the ñve openings to allow for this dual adjustment, will be appreciated. , The cutter head or cutting tool may be mounted upon the shaft 4 by any suitable means. As shown in Figure 2, the upper and lower sur face of the head maybe recessed or counter edge abutting against the shoulder, a retaining plate for anchoring and retaining the cutting bored at I6 and` I1, respectively, and provided 20 bit within the recess and projection and against -with a tapered opening I8 for receiving the re the shoulder, spaced locking bolts carried by the plate and received in spaced aligned openings in duced end of the shaft. The recess I6 is adapted to receive a collar or enlargement on the shaft the cutting bit and projection, and other open ings provided in the cutting bit to be aligned with and the recess or counterbore I1 receive a lock nut or other means for locking the head to the 25 and receive certain of the locking bolts for per threaded, reduced end of the shaft 4. It will be readily appreciated that the cutter mitting the bit to be adjusted to another posi able therewith for the purpose desired, such for having spaced outwardly extending projections tion away from the shoulder when the initial head is so designed and constructed that the bits cutting surfaces thereof become worn, and means or blades need not be of the shape or contour or providing an abutment for the rear of the bit purpose of the bits or blades 3 as therein shown, 30 in this latter position. 4. A cutting tool for a machine for milling pro but other forms of bit, blades or tools with or without ñttings or adapters, may be interchange files in a metal casting comprising a cutter head example as end cutters or milling blades, etc. Having thus disclosed my invention, I claim: 1. A cutting tool for a milling machine com prising a cutter head having a plurality of out each to mount a cutting bit, one side of each pro 35 jection recessed for a greater portion of its length and provided with a shoulder, a cutting bit mount ed in the recess and having its cutting surface ex posed and the rear edge of the bit abutting the wardly extending projections, one side of each projection being recessed for the reception of a shoulder to prevent inward movement of the bit. cutting bit and provided with a shoulder, a cut 40 a removable retaining plate substantially con ting bit mounted within the recess and having forming to the shape of the recess and provided substantially the shape of a right-angle tri with spaced locking bolts arranged in triangular angle with the base and hypotenuse provided formation and carried in the retaining plate and with cutting edges and the other side seating to be received in aligned openings in the bit and against the shoulder, a plate for anchoring and 45 projection for rigidly locking the bit against shifting from its predetermined position. retaining the cutting bit within the recess and projection, spaced locking bolts carried by the 5. A milling cutter assembly for milling pro plate and received in spaced aligned openings files, comprising a cutter head having a plurality in the cutting bit and projection, and other open of spaced projections, one side of each of the ings provided in the cutting bit _to be aligned 50 projections being recessed axially and provided with and receive certain of the locking bolts for with a shoulder, a cutting blade of substan permitting the bit to be adjusted to another tially triangular formation to be received in each position when the initial cutting surfaces thereof recess and provided with milling surfaces at two become worn, one of the locking bolts provid of its sides and with its other side abutting the ing an abutment against which the rear of the bit shoulder, a plate for retaining each blade in posi seats when in the latter adjustedY position. tion, locking members carried in each plate and projecting through aligned openings in each blade 2. A cutting tool for a machine for milling pro iiles comprising a cutter head having spaced out and received in aligned threaded openings in each wardly extending projections each to mount a arm, additional openings provided in each blade cutting bit, one side of each projection recessed 60 and spaced from the ñrst mentioned openings for for a greater portion of its length and provided anchoring the blade in another position to permit >with a shoulder, a cutting bit having substan the blades to be re-sharpened and reused, and an abutment against which the rear of the blade tially the shape of a right angle triangle with the base and hypotenuse provided with milling surfaces and its other side abutting against the abuts in this latter position. V65 ~ ` ` ALOIS KUTSCI-IA.