US270235A - Johann martignoni - Google Patents

Johann martignoni Download PDF

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Publication number
US270235A
US270235A US270235DA US270235A US 270235 A US270235 A US 270235A US 270235D A US270235D A US 270235DA US 270235 A US270235 A US 270235A
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lathe
martignoni
piece
johann
work
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q27/00—Geometrical mechanisms for the production of work of particular shapes, not fully provided for in another subclass
    • 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
    • Y10T409/00—Gear cutting, milling, or planing
    • Y10T409/30—Milling
    • Y10T409/304536—Milling including means to infeed work to cutter
    • Y10T409/305544—Milling including means to infeed work to cutter with work holder
    • Y10T409/305656—Milling including means to infeed work to cutter with work holder including means to support work for rotation during operation
    • Y10T409/305768—Milling including means to infeed work to cutter with work holder including means to support work for rotation during operation with linear movement of work

Definitions

  • FIG. 1 is a plan of a part of a lathe provided with the attachment
  • Figs. 2 and 3 are respectively a side view and a front view of a cutting-tool.
  • the frame A A of the apparatus is fixed to the upper or cross slide of the lathe.
  • the frame carries an adjustable screw, 0, and a driver, D, with triangular extremity, forming a center, between which and "the center of the screw (J the piece of work is mounted.
  • the piece of work is placed the pe-- culiarly-shaped cutter f, secured to the mandrel by means of a chuck.
  • the object to be grooved is approached to thecutter f by turnin g the handle M of the slide.
  • the required helix is produced by a slow longitudinal and simultaneous slow rotary motion of the piece ofwork by means of the following mechanism
  • the pin D which serves as a driver, carries at one extremity a bevel-wheel, R, and the contiguous end of the frameAAforms a forked bearing for the horizontal shaft W, on which are mounted the bevel-wheels R and shaft is keyed outside the bearings a spurwheel, S, which gears into a rack, T, bolted to the lathe-bedparallel to the piece of work.
  • the handle N is turned in order to move the lathe-slide so as to obtain a longitudinal [HO-'1 tion of the piece of work
  • the pinion S which gears into the stationary rack T, is forced to revolve, and transmits this motion to the bevelwheel R by means of one of the bevel-wheels R and R mounted on the shaft W.
  • the wheel R turns the driver D, and consequently also the piece of work, on its axis.
  • the right wheel R and for cutting a lefthand groove the left wheel R is screwed fast on its shaft, while the opposite wheel is loosened.
  • the screwcaps, and subsequently the pinion S, is detached from the shaft W, ⁇ vhile the rack T may or may not be detached from the lathe.

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  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Turning (AREA)

Description

(No Model.) 7
'J.. MARTIGNONI.
MACHINE FOR CUTTING HELIGAL enoovss INTWIST DRILLS. .No. 270,235. Patented Jan. 9.1883,.
N. "ETERS Pnalo-Lilhegmplvun \Vnshinglon. n. c
I UNITED STATES PATENT OFFICE.
JQHANN MARTIGNONI, OF BOCKENHEIM, NEAR FRANKFURT-ON-THE-MAIN, GERMANY.
MACHINE FOR CUTTING HELICAL GROOVES iN TWIST-DRILLSI SPECIFICATION forming part of Letters Patent No. 270,235, dated January 9, 1883.
Application filed September 20, 1882. (No model.) Patented in Germany January 27, 1882, No. 2,035; in Belgium January 28,
1882, No. 56,917; in France February 17, 1882. No. 147,412, and in England July 17, 1882, No. 3,384.
R gearing into the wheel R. On the same 5 To all whom it may concern Be it known that 1, JOHANN MARTIGNONI, of Bockenheim, near Frankfort-on-the-Main, in the Empire of Germany, have invented a new and useful Lathe Attachment for Outting Helical Grooves in Twist-Drills and Similar Objects, (for whichI have obtained patent in Germany, No. 2,035, hearing date 27th J annary, 1882; in Belgium,No. 56,917, bearing date28th January, 1882; in'France, No. 147,412, hearing date 17th of February, 1882, and. in
England a six months provisional protection,
No. 3,384, bearing date 17th July, 1882,) of which the following is a specification.
The apparatus which forms the object of my invention serves to cut twist-drills, reamers, screw-taps, and similar objects having helical grooves, and may be attached to an ordinary lathe. Its construction will be explained with the aid of the accompanying drawings, in whicha Figure 1 is a plan of a part of a lathe provided with the attachment, while Figs. 2 and 3 are respectively a side view and a front view of a cutting-tool.
The frame A A of the apparatus is fixed to the upper or cross slide of the lathe. The frame carries an adjustable screw, 0, and a driver, D, with triangular extremity, forming a center, between which and "the center of the screw (J the piece of work is mounted.
Opposite the piece of work is placed the pe-- culiarly-shaped cutter f, secured to the mandrel by means of a chuck. The object to be grooved is approached to thecutter f by turnin g the handle M of the slide.
The required helix is produced by a slow longitudinal and simultaneous slow rotary motion of the piece ofwork by means of the following mechanism The pin D, which serves as a driver, carries at one extremity a bevel-wheel, R, and the contiguous end of the frameAAforms a forked bearing for the horizontal shaft W, on which are mounted the bevel-wheels R and shaft is keyed outside the bearings a spurwheel, S, which gears into a rack, T, bolted to the lathe-bedparallel to the piece of work. If the handle N is turned in order to move the lathe-slide so as to obtain a longitudinal [HO-'1 tion of the piece of work, the pinion S, which gears into the stationary rack T, is forced to revolve, and transmits this motion to the bevelwheel R by means of one of the bevel-wheels R and R mounted on the shaft W. Thereupon the wheel R turns the driver D, and consequently also the piece of work, on its axis. For cutting a right-hand helical groove, the right wheel R and for cutting a lefthand groove the left wheel R, is screwed fast on its shaft, while the opposite wheel is loosened.
- In order to render the helical groove more or less steep, the piece of work must be turned more rapidly or more slowly, which is effected by changing the spur-wheel S.
For producing straight grooves, the screwcaps, and subsequently the pinion S, is detached from the shaft W,\vhile the rack T may or may not be detached from the lathe.
Having thus described my invention and the manner in which it maybe used, lclaim- The combination, with the cross-slide of a lathe having the piece of work fixed thereto, ofa driver, D, with bevel-wheel R, bevel-wheels R R and pinion S, a rack attached to the lathe and gearing into thesaid pinion for the purpose of producing a rotary motion of the pinion, driver, and piece of work when the crossslide of the lathe is moved, substantially as described and illustrated.
In testimony whereof I have signed this specification in the presence of two subscribing witnesses.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2692538A (en) * 1948-10-01 1954-10-26 Hommel G M B H H Twist drill milling device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2692538A (en) * 1948-10-01 1954-10-26 Hommel G M B H H Twist drill milling device

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