US1830881A - Attachment for turning work pieces by means of broad cutters - Google Patents

Attachment for turning work pieces by means of broad cutters Download PDF

Info

Publication number
US1830881A
US1830881A US289834A US28983428A US1830881A US 1830881 A US1830881 A US 1830881A US 289834 A US289834 A US 289834A US 28983428 A US28983428 A US 28983428A US 1830881 A US1830881 A US 1830881A
Authority
US
United States
Prior art keywords
cutters
broad
work
turning
piece
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US289834A
Other languages
English (en)
Inventor
Mulka Friedrich
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US1830881A publication Critical patent/US1830881A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B29/00—Holders for non-rotary cutting tools; Boring bars or boring heads; Accessories for tool holders
    • B23B29/24—Tool holders for a plurality of cutting tools, e.g. turrets
    • B23B29/26—Tool holders in fixed position
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B29/00—Holders for non-rotary cutting tools; Boring bars or boring heads; Accessories for tool holders
    • B23B29/04—Tool holders for a single cutting tool
    • B23B29/12—Special arrangements on tool holders
    • B23B29/16—Special arrangements on tool holders for supporting the workpiece in a backrest
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T82/00—Turning
    • Y10T82/25—Lathe
    • Y10T82/2527—Lathe having hollow cutter head

Definitions

  • the present invention relates to a process for turning work-pieces by means of broad cutters.
  • the noveltyand fundamental subject of the invention consists therein, that in themselves known broad cutters are connected in groups and that the individual broad cutters of a group are acting upon equal. length of the work-piece, respectively take off chips of equal width.
  • the broadcutters of one group are-so arranged, that their center-lines are located exactly, or approximately so, in one plane. It-is hereby enabled to take off a considerably greater chip-cross-section under equal cutting-velocity.
  • the piece of metal can simultaneously be worked by a number of groups of broad cuttersto enable working upon greater length.
  • the broad cutters are only moving radially. Under such radial movement is however not only understood the absolutely rectilinear movement from the periphery towards the center, but all oscillating motions of the workpiece fromoutward to the inward, even though these movements may not be perfectly rectilinear.
  • a feeding-velocity, as in longitudinal turning, can, according to the present invention-be obtained by means of cross-cutters for v the reason, that difi'erent tools work. in different planes andiare' consequently working withoutlateral friction and free fromoscilupon, that considerably larger chip-crosssections can be taken off, than would be possible according to theknown process, even under most economical working;
  • the employed cutters are having a total width of 30 mm. and that the feeding-velocity is in both cases equal.
  • Fig. '1 is an end-view of' the faceplate carrying the turning-tools and the bar of material to be'turned. 7
  • Fig. 2 is a side-elevation of Fig. 1.
  • Fig. 3 shows the manufacture of a cylindrical pivot
  • Figs. 4, 4a and 46 show the arrangement of two groups of'broad cutters, wherein the broad cutters are staggered by 180.
  • Figs. 5 and 5a show one embodiment of the invention relative to the arrangement of tools, with three broad cutters.
  • Fig. 6, 6a and 6?) show constructions modified compared with the construction according to Fig. 1.
  • Fig. 7 shows an. arrangement with auxiliary supports.
  • Therod f of the material to be worked is passed through the face-plate a.
  • the turningetoolsb, 0, (Z and care moved vertical to the axis of the revolving workpiece f.
  • the turning-tools b and (Z are employed for roughing thegrooves 7.
  • These tools are provided with. two teeth 6 respectively d.
  • the tools 0 and e serve for taking off the remaining parts h from the workpiece.
  • the tools I) and (Z commence and finthe: finishing cut.
  • Dividing the chip according to Fig. 3 enables, that the left hand tooth of the tool 6 cuts with both edges, while the right hand tooth of the tool 6 and the teeth of the tool (Z are cutting with one edge only.
  • the tools cand ehowever are working perfectly unobstructed, as they are only separating the ribs 71... V
  • the constructions, embodying the process according-to Figs. 4-7, show groups of broad cutters, whereby the steel is worked symmetric and concentric. This has'the advantage, that the work-piece is acted upon by the broad cutters from all sides, so that the work-piece centers itself automatically between the broad cutters. Atorsional strainfis consequently only exerted upon the work-piece-and working can therefore be done with-comparatively very broad cutters.
  • Fig. 4 working is efiected for a certain length by two groups staggered by 90, wherefrom each two opposite disposed broad cutters belong to one group.
  • the broadcutters b and c belong f. i. to the first group and the broad cutters d and e to the second group.
  • The, broadcutters b and c are staggered in oneplane cZ-d by 180.
  • the broad cutters cl andew are disposed in a secondplane B.-B, staggered by 180, the said plane being twisted comparedto the plane AA, by 90.
  • the center-line I-II of the group of broad cutters b, 0 can be staggered, relative .to the center-line III IV of the group of broad cutters d, e- V In Fig. 5, working of a certain length is effected by one group of three broad cutters belonging together, being each staggered to one-another by 120.
  • Fig. 5a shows in what manner the working-breadth of the individual cutters are staggered towards each other.
  • Fig. 6 shows the working by one group of four broad cutters, belonging together
  • Fig. 7 shows working of a greater breadth with two broad cutters only, staggered towards each other by 180.
  • the broad cutter 1 is designed as multiple-tool cutter, the
  • broad cutter 2 preferably as solid cutter.
  • two supports, 7' and g, staggered towards each otherby 180, are t. i. designed as rollersand simultaneously fed forward radially with the broad cutters.
  • This construction has the advantage, that only two broad cutters are required forworking one length to be turned. In all the illustrated arrangements, equal length, respectively equal chip-cross-sections are separated by the broad cutters belonging together.
  • The. feeding press'ure, according ⁇ 55 one-another by half the width of tooth b orto Fig. 7 is hereby f. i. compensated in radial direction and the main cutting-pressure in vertical direction. Dividing the width of chips enables generally in everyone of the 5 multiple cutting-edges to convert the oscillating forces of the cutting-pressure'into a constant force. 7
  • a special advantage of the present mode of embodying the invention consists therein, that one broad cutter each of a group is provided with an uninterrupted cutting-edge, as f. i. in Fig. 4 the cutters and e, in Fig. the cutter b, in Fig. 6, the cutter 6.
  • These cutters, with a full edge, are,during roughing of the broad cutters disposed in front M thereof, only taking the remaining equal chip-cross-section off, like the other multiple broad cutters belonging thereto.
  • the same act during 2-3 revolutions of the work-piece, as scrapers and produce thereby an extraordinary smooth working-surface, such as could otherwise.
  • the above described invention can be varied within wide limits without impairing the range of the invention in itself thereby.
  • the abstraction, width of cut, or width of chip may f. i. be considered identical, if the 0 cutter a is f. i. of greater width as the distance between I) b, as the cutter 0 is in this case only taking off the remaining Width of chip, even if the cutter 0 should itself be of greater width.
  • the expression 5 effective width of chip has consequently been used as general characteristics. It is likewise possible to provide the cutter 6 likewise with two edges 0 0, whereby the total of the prongs b 5 should be equal to the total of the prongs c 0.
  • the one prong 0 will be located between the two prongs b b andthe centre-lines of b and 0 would in this case not coincide perfectly, but be displaced towards produced by the cutting-pressure of the va-' the sameas the chip-cross-sectiontaken off.
  • a turningattachment comprising a plurality of radially movable broad cutters symmetrically arranged around the work-piece, each ,ofwhich cutters is adaptedto take off an equal, chip cross-section from the said work-piece and ,befsimultaneously moved cuttingoperation.
  • ⁇ A turning attachment comprising a plurality of radially movable broad; cutters forming a group, whichfcutters are symmetra'dially withthe same velocity fduring the of which is adapted'to take off equal chiprically arranged in one plane vertical to the axis of and around the-work-piece, and each cross-sections from the said Work-piece, said cutters having an equal and simultaneous radial movement during cutting operation.
  • a turning attachment comprising a plurality of group cutters, each containing plural radially movable broad cutters, the cutters of one group being symmetrically arranged so. as to exert their cutting force. in one plane vertical to the axis of and around the work-piece,the cutter groups being arranged one after' another lengthwise to the axis of the work-piece, said cutters being radially movable during the cutting operation.
  • a turning attachment comprising a plurality of radially movable broad cutters symmetrically arranged in groups around the,work-piece,'each ofwhich broad cutters comprises a plurality of cutting teeth, which teeth of a single cutter are displaced symmetrically to the teeth of the other broad cutters of the same group, said cuttersbeing radially movable during the cutting operation.
  • a turnlng attachment comprising a plurality of radially movable broad cutters symmetrically arranged in groups around the workpiece, certain of which broad cutters comprise a series of cutting teeth of different width, the total width of which is equal to the total Width of each other broad cutter belonging to the same group, said adapted to remove equal chip-cross-sections from the work-piece, said cutters being radially movable during the cutting operation.
  • a turningattachment comprising a plurality of broad cutters symmetrically disposed about the Work-piece, said cutters extending the full length of the Work-piece and adapted to be radially moved with respect to the said work-piece, certain of said cutters having a plurality of cutting edges of unequal widths tending to break up the V turning oscillations produced by the cutters into oscillations of unequal frequencies counteracting each other whereby to increase the cutting stability, and said cutters being radially movable during the cutting operation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drilling Tools (AREA)
  • Milling Processes (AREA)
US289834A 1927-07-06 1928-07-02 Attachment for turning work pieces by means of broad cutters Expired - Lifetime US1830881A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE293422X 1927-07-06

Publications (1)

Publication Number Publication Date
US1830881A true US1830881A (en) 1931-11-10

Family

ID=6079176

Family Applications (1)

Application Number Title Priority Date Filing Date
US289834A Expired - Lifetime US1830881A (en) 1927-07-06 1928-07-02 Attachment for turning work pieces by means of broad cutters

Country Status (4)

Country Link
US (1) US1830881A (en))
BE (1) BE352652A (en))
FR (1) FR657035A (en))
GB (1) GB293422A (en))

Also Published As

Publication number Publication date
GB293422A (en) 1928-10-18
BE352652A (en))
FR657035A (fr) 1929-05-16

Similar Documents

Publication Publication Date Title
US4411563A (en) Cutter device
US3541655A (en) Indexable and reversible cutting inserts
US2367221A (en) Cutter
CN105499666A (zh) 舍弃式倒角刀片
US3163919A (en) Rotary cutting tools
US1830881A (en) Attachment for turning work pieces by means of broad cutters
EP3471933A1 (en) Wood cutting tool and an arrangement for using said tool
US2770028A (en) Broach with multiple small cutting units
CN207043403U (zh) 具有分散应力式排屑槽的铣刀
US3548474A (en) Machine tool
RU2041029C1 (ru) Прорезная или отрезная дисковая фреза
US1707279A (en) Process for the mechanical working of metals
US3814155A (en) Tool heads for use in machining timber
US3196518A (en) Lathe cutter bits
CN207508307U (zh) 外球面加工组合成型刀具
US4991986A (en) Milling cutter having face and peripheral cutting edges
US3127663A (en) Combination boring and routing tool
US707035A (en) Metal-working tool.
SU385676A1 (ru) Вращающийся резец
US1865617A (en) Metal cutting tool
SU68939A1 (ru) Тангенциальный многолезвийный резец
CN217433632U (zh) 一种可更换刀片的加工圆柱形工件的套镗刀
SU97109A1 (ru) Концева фреза дл обработки пространственно-сложных поверхностей штампов, прессформ, кулачков и тому подобных изделий
CN214978018U (zh) 一种错齿复合铣刀
CN214053797U (zh) 铣磨刀