US701217A - Apparatus for elliptical turning and boring. - Google Patents

Apparatus for elliptical turning and boring. Download PDF

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Publication number
US701217A
US701217A US7421601A US1901074216A US701217A US 701217 A US701217 A US 701217A US 7421601 A US7421601 A US 7421601A US 1901074216 A US1901074216 A US 1901074216A US 701217 A US701217 A US 701217A
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tool
slide
holder
turning
point
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US7421601A
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Charles Jules Montreuil
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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
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/03—Processes
    • 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
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/39—Cutting by use of rotating axially moving tool with radially outer limit of cutting edge moving to define cylinder partially, but not entirely encircled by work
    • 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
    • Y10T82/13—Pattern section

Definitions

  • This invention relates to apparatus for elliptical turning and boring, intended more particularly for turning articles of elliptical form in cross-section.
  • FIG. 2 and 3 represent in longitudinal elevation and in cross-section, respectively, a part of a lathe constructed and working according to this invention.
  • Fig. 4 is a sectional detail of a portion of the lathe, showing the tool-holder, the supporting means therefor, and the arrangement for guiding the said supporting means.
  • Fig. 5 is a plan of the crankdisk and the adjusting means therefor.
  • Fig. 6 is a sectional detail of the lathe, showing the adjusting-screw for the slide-rest and its operating means.
  • OA be a straight line of a length represented by R turning around the point
  • AB be another straight line of a length represented by 1- turning around the point A in a direction opposite to that of the line 0A with double angular velocity of 0A.
  • myinvention consists of haviuga toolholder, such as O B,causing the poin t B of the tool to describe two circumferences around the stationary point A, while the piece to be turned is caused to effect a single rotation around its center 0. From the foregoing it results that the cutting-point B will cut a strictly-correct ellipse out of the piece turning around 0, and as the direction of the toolholder is always that of the normal to the ellipse the tool will attack the material to be turned in the best conditions.
  • the piece 1 to be turned is mounted between the loose headstock and the tail-stock.
  • the tool 2 is mounted in a holder 3 and is capable of sliding in a supporting piece or slide 4, which can turn in a semicircular depression 5 in a table 6 on the slide-rest.
  • the piece 4 is guided in its movements by the inclined surfaces 7 and 8, Fig. 6.
  • the tool-holder 3 is connected by a link 9 and connecting-rod 10 to a crank-disk 11, adjustable in a slide 12, which is capable of turning on the journal 13. Both slides 4. and 12 are connected together by a slotted rod 14 to keep them parallel.
  • the link 9 causes the tool-holder 3 to participate in the movement imparted to the connecting-rod 10 during the rotation of the crank-disk 11.
  • crank-pin 15 on the crank-disk can be adjusted in position with relation to the center of the disk by means of a screw 16, Fig. 7, so as to make '1' (radius of the circle described by the crank-pin or the point of the tool) equal to
  • the position of the journal 13 must be so adjusted that the-distance between this journal and the center of the crank-disk 11 is equal to
  • the positions of the crank-disk pin and of the journal 13 are adjusted as hereinbefore described.
  • the point of the tool will then describe a circle Y, Figs. 5 and 3, of appropriate radius and turn an ellipse of the dimensions required.
  • the crank-disk is actuated as follows:
  • the spindle of the fixed head-stock is connected by means of spur-wheels to a shaft 20, which is elliptical or of equivalent shape on crosssection and carries a sleeve 21, capable of sliding on the said shaft 20 at the same time as it rotates between brackets 22, carried by the slide-rest.
  • On the sleeve 21 is a toothed wheel 23, Fig. 4, gearing, through the medium of spur-wheel 24, with a spur-wheel 25, keyed on the spindle of the crank-disk 11.
  • This gearing must be so arranged that the crankdisk 11 rotates twice as fast and in the same direction as the piece 1 that is operated on, so that the point of the tool describes the circle Y twice during one rotation of the piece 1 and in the direction of the latters rotation.
  • the axle of the intermediate wheel 24 is carried by two oscillating arms 26, which permit of this Wheel being thrown out of gear when it is desired to turn articles of circular section.
  • the screw 27, which actuates the slide-rest is driven through a set of Wheels connecting the screw 27 to the spindle of the fast headstock.
  • the slide-rest may be traversed by turning the hand-wheel 29, which, by means ofthe bevel-gear 30, rotates the nut 31, Fig. 8, within the sleeve 32 of the support 33, forming part of the slide-rest.
  • the hand-wheel 29 By turning the hand-wheel 29 the motion of the slide may be either accelerated or retarded while the screw 27 is rotating, or if this screw be at rest the slide-rest may be traversed by hand.
  • the slide-rest While the slide-rest is being traversed by the screw 27 the nut 31 is only kept stationary by its frictional bearing in the sleeve 32 and the resistance of the bevel-gear 30 and the fly-wheel shaft 29. If the tool should meet with a greater resistance While the sliderest is moving, the screw 27 will cause the nut 31 to rotate, and the slide-rest will cease to be traversed.
  • the slide-rest maybe likewise shifted by means of the pinion 34 and rack 35.
  • the head-stock and the back cencircular depression a tool-holder 3 capable of sliding in the piece 4, a connecting-rod 9 and link 10 for connecting the tool-holder with the crank-pin 15 of a crank-disk 11, a slide 12 for.
  • a lathe for turning articles with elliptical cross-section the combination with a slide-rest, of a table having a circular depression, a supporting-piece turning in the circular depression, a tool-holder adapted to slide in the said piece, a disk, a crank-pin therefor, a rod and a link for connecting the crank-pin with the tool-holder, an adjustable journal, a slide oscillating on said journal and adapted to guide said link, a slotted rod for connecting the supporting-piece and slide, spur-wheels 19, a shaft operated by the said spur-wheels, and spur-wheels 24, 25 actuated by the said shaft for operating the said crankdisk, the relative proportions of the spurwheels 24, 25 being such that the disk turns with an angular velocity twice that of the article being turned.
  • a tool-holder adapted to have a tool suitably connected thereto, mechanism for reciprocating said tool-holder, mechanism for supporting and rocking said tool-holder in a circular manner simultaneously with the reciprocation thereof, operating means for the said mechanisms, adjustable means for connecting the supporting and rocking mechanism to the said operating means for causing the operation of said mechanism and for changing the degree of circular movement of the said tool-holder, and adjustable .means for connecting the reciprocating mechanism to the operating means for operating said mechanism and for adjusting the reciprocating movement of the tool -holder, substantially as herein shown and described.
  • a tool-holder adapted to have a tool suitably connected thereto, means for supporting said tool-holder to permit of the operation thereof in a circular manner, mechanism for reciprocating said tool holder, mechanism for rocking said tool-holder in a circular manner simultaneously with the reciprocation thereof, operating means for the my hand in presence of two subscribing Witsaid tool-holder, adjustable means connected nesses. to said rocking mechanism and to said operating means for operating the former and for CHARLES JULES MONTREUIL' 5 adjusting the reciprocating" movement of the witnesseses:

Description

No. 701,217. Patented May 27, I902; A
c. J. MUNTREUIL.
APPARATUS FOR ELLIPTICAL TURNING AND BORING.
(Applicatian filed Sept. 3, 1901.) (No Model.) 3 Sheets-Sheet I.
206%266566 .fiZZ 19/2501" Gigi-k6 MY? 6 meta/Z W it m: Norms PETER; cc, wommuq, mswmmw. a. c,
No. 701,217. Patented May 27, I902.
c. .1. MONTREUIL.
APPARATUS FOR ELLIPTICAL TURNING AND BORING.
(Application filed Sept. 3, 1901.)
(No Model.) 3 Sheets-Sheet 2.
' I j6%arZaJJ%2zZ9'eazZ ma mums PETERS c0 PHOTO-HTML, wAsumcTo-l. n c.
Patented May 27, I902.
C. J. MONTREUIL. APPARATUS FOR ELLIPTICAL TURNING AND BORING.
(Application filed Sept. 3, 1901.)
3 Sheets-Sheet 3 (No Model.)
717%zewmz THE cams Ps'rzns co, PNUTO-LITHG, WASHINGTON, n cy UNirn STATES P TENT OFFICE.
CHARLES JULES MONTREUIL, OF HON'FLEUR, FRANOE.
APPARATUS FOR ELLIPTICAL TURNING AND BORING.
SPECIFICATION forming part of Letters Patent No. 701,217, dated May 27, 1902.
Application filed September 3, 1901. 1 Serial No. 74,216. (No model.)
To all whom, it may concern:
Be it known that I, CHARLES J 'ULES MON- TREUIL, a citizen of the French Republic, residing at Villa Oamlia, Route de Trouville, Honfieur, France, have invented certain new and useful Improvements in Apparatus for Elliptical Turning and Boring, of which the following is a specification.
This invention relates to apparatus for elliptical turning and boring, intended more particularly for turning articles of elliptical form in cross-section.
In order that my invention may be fully understood, I will proceed to describe the same with reference to the accompanying drawings, of which- Figure l is a diagrammatic View intended to show the principle on which the action of the tool of my improved apparatus is based. Figs. 2 and 3 represent in longitudinal elevation and in cross-section, respectively, a part of a lathe constructed and working according to this invention. Fig. 4 is a sectional detail of a portion of the lathe, showing the tool-holder, the supporting means therefor, and the arrangement for guiding the said supporting means. Fig. 5 is a plan of the crankdisk and the adjusting means therefor. Fig. 6 is a sectional detail of the lathe, showing the adjusting-screw for the slide-rest and its operating means.
Referring to Fig. 1, let OA be a straight line of a length represented by R turning around the point 0, and let AB be another straight line of a length represented by 1- turning around the point A in a direction opposite to that of the line 0A with double angular velocity of 0A.
Let us suppose that the straight line OA has moved around 0 through an angle a and in the direction of the arrow F and that during this rotation the straight line AB has moved around the point A through an angle 204 in the opposite direction to that of the arrow F, so that the point A comes at A and the point B at B. It may be geometrically proven that when under these conditions the line OA has made a complete rotation around the point 0 the point B has described-an ellipse, such as E, the semimajor axis of which is a (R-l-r) and the semiminor axis is b (R-r.) It may also be geometrically proven that by joining the point 13, obtained as aforesaid, to a point 0 symmetrical with O relatively to A the straight line 0 B is a normal to the ellipse.
Let it be supposed that the ellipse E turns around the center 0 in the direction of the ar' row F, that the points A and 0 remain stationary, and the point B (the end of the straight line A B) remains in contact with the ellipse. During one complete rotation of the ellipse E the line A B or the point B will eflect two complete rotations around the stationary point A and for all the positions of the point B the line 0 B is a normal to the ellipse.
Now myinvention consists of haviuga toolholder, such as O B,causing the poin t B of the tool to describe two circumferences around the stationary point A, while the piece to be turned is caused to effect a single rotation around its center 0. From the foregoing it results that the cutting-point B will cut a strictly-correct ellipse out of the piece turning around 0, and as the direction of the toolholder is always that of the normal to the ellipse the tool will attack the material to be turned in the best conditions.
I will now describe a practical form of turning-lathe constructed and working according to this principle, reference being first made to Figs. 2 and 3 of the accompanying drawings. The piece 1 to be turned is mounted between the loose headstock and the tail-stock. The tool 2 is mounted in a holder 3 and is capable of sliding in a supporting piece or slide 4, which can turn in a semicircular depression 5 in a table 6 on the slide-rest. The piece 4 is guided in its movements by the inclined surfaces 7 and 8, Fig. 6. The tool-holder 3 is connected by a link 9 and connecting-rod 10 to a crank-disk 11, adjustable in a slide 12, which is capable of turning on the journal 13. Both slides 4. and 12 are connected together by a slotted rod 14 to keep them parallel. The link 9 causes the tool-holder 3 to participate in the movement imparted to the connecting-rod 10 during the rotation of the crank-disk 11.
The crank-pin 15 on the crank-disk can be adjusted in position with relation to the center of the disk by means of a screw 16, Fig. 7, so as to make '1' (radius of the circle described by the crank-pin or the point of the tool) equal to The position of the journal 13 must be so adjusted that the-distance between this journal and the center of the crank-disk 11 is equal to In order to turn a body of elliptical crosssection of given dimensions, the positions of the crank-disk pin and of the journal 13 are adjusted as hereinbefore described. The point of the tool will then describe a circle Y, Figs. 5 and 3, of appropriate radius and turn an ellipse of the dimensions required.
The crank-disk is actuated as follows: The spindle of the fixed head-stock is connected by means of spur-wheels to a shaft 20, which is elliptical or of equivalent shape on crosssection and carries a sleeve 21, capable of sliding on the said shaft 20 at the same time as it rotates between brackets 22, carried by the slide-rest. On the sleeve 21 is a toothed wheel 23, Fig. 4, gearing, through the medium of spur-wheel 24, with a spur-wheel 25, keyed on the spindle of the crank-disk 11. This gearing must be so arranged that the crankdisk 11 rotates twice as fast and in the same direction as the piece 1 that is operated on, so that the point of the tool describes the circle Y twice during one rotation of the piece 1 and in the direction of the latters rotation.
The axle of the intermediate wheel 24 is carried by two oscillating arms 26, which permit of this Wheel being thrown out of gear when it is desired to turn articles of circular section.
The screw 27, which actuates the slide-rest, is driven through a set of Wheels connecting the screw 27 to the spindle of the fast headstock. The slide-rest may be traversed by turning the hand-wheel 29, which, by means ofthe bevel-gear 30, rotates the nut 31, Fig. 8, within the sleeve 32 of the support 33, forming part of the slide-rest. By turning the hand-wheel 29 the motion of the slide may be either accelerated or retarded while the screw 27 is rotating, or if this screw be at rest the slide-rest may be traversed by hand.
While the slide-rest is being traversed by the screw 27 the nut 31 is only kept stationary by its frictional bearing in the sleeve 32 and the resistance of the bevel-gear 30 and the fly-wheel shaft 29. If the tool should meet with a greater resistance While the sliderest is moving, the screw 27 will cause the nut 31 to rotate, and the slide-rest will cease to be traversed. The slide-rest maybe likewise shifted by means of the pinion 34 and rack 35. The head-stock and the back cencircular depression a tool-holder 3 capable of sliding in the piece 4, a connecting-rod 9 and link 10 for connecting the tool-holder with the crank-pin 15 of a crank-disk 11, a slide 12 for.
guiding the link 10, oscillating on an adjustable journal 13, and a slotted rod 14 connecting piece 4 and the slide 12 so as to keep them parallel, this arrangement being made so as to cause the end of the tool to describe a circle the diameter of which is that described by the crank-pin, substantially as hereinbefore described and for the purpose set forth.
2. In a lathe for turning articles with elliptical cross-section, the combination with a slide-rest, of a table having a circular depression, a supporting-piece turning in the circular depression, a tool-holder adapted to slide in the said piece, a disk, a crank-pin therefor, a rod and a link for connecting the crank-pin with the tool-holder, an adjustable journal, a slide oscillating on said journal and adapted to guide said link, a slotted rod for connecting the supporting-piece and slide, spur-wheels 19, a shaft operated by the said spur-wheels, and spur- wheels 24, 25 actuated by the said shaft for operating the said crankdisk, the relative proportions of the spurwheels 24, 25 being such that the disk turns with an angular velocity twice that of the article being turned.
3. In a lathe, a tool-holder adapted to have a tool suitably connected thereto, mechanism for reciprocating said tool-holder, mechanism for supporting and rocking said tool-holder in a circular manner simultaneously with the reciprocation thereof, operating means for the said mechanisms, adjustable means for connecting the supporting and rocking mechanism to the said operating means for causing the operation of said mechanism and for changing the degree of circular movement of the said tool-holder, and adjustable .means for connecting the reciprocating mechanism to the operating means for operating said mechanism and for adjusting the reciprocating movement of the tool -holder, substantially as herein shown and described.
4. In a lathe, a tool-holder adapted to have a tool suitably connected thereto, means for supporting said tool-holder to permit of the operation thereof in a circular manner, mechanism for reciprocating said tool holder, mechanism for rocking said tool-holder in a circular manner simultaneously with the reciprocation thereof, operating means for the my hand in presence of two subscribing Witsaid tool-holder, adjustable means connected nesses. to said rocking mechanism and to said operating means for operating the former and for CHARLES JULES MONTREUIL' 5 adjusting the reciprocating" movement of the Witnesses:
tool-holder. LoUIs VIELOURET,
In testimony whereof I have hereunto set 1 FIRNAND DURERLES.
US7421601A 1901-09-03 1901-09-03 Apparatus for elliptical turning and boring. Expired - Lifetime US701217A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2713282A (en) * 1951-07-25 1955-07-19 Gomerue Establishment Nibbling cut
US3302498A (en) * 1963-08-23 1967-02-07 Spinner Georg Apparatus for machining non-circular profiles
US3812746A (en) * 1972-10-11 1974-05-28 Illinois Tool Works Apparatus for forming epitrochoidal surfaces

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2713282A (en) * 1951-07-25 1955-07-19 Gomerue Establishment Nibbling cut
US3302498A (en) * 1963-08-23 1967-02-07 Spinner Georg Apparatus for machining non-circular profiles
US3812746A (en) * 1972-10-11 1974-05-28 Illinois Tool Works Apparatus for forming epitrochoidal surfaces

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