US2509070A - Device for producing camshafts and the like - Google Patents

Device for producing camshafts and the like Download PDF

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Publication number
US2509070A
US2509070A US767095A US76709547A US2509070A US 2509070 A US2509070 A US 2509070A US 767095 A US767095 A US 767095A US 76709547 A US76709547 A US 76709547A US 2509070 A US2509070 A US 2509070A
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United States
Prior art keywords
cam
cams
tool
holder
lever
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Expired - Lifetime
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US767095A
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English (en)
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Musyl Robert
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Individual
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
    • B24B19/08—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding non-circular cross-sections, e.g. shafts of elliptical or polygonal cross-section
    • B24B19/12—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding non-circular cross-sections, e.g. shafts of elliptical or polygonal cross-section for grinding cams or camshafts
    • 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

  • the object of the invention is the provision of a new process and a device for executing it whereby all cams of a lot are perfectly alike and the tool machining the cam operates at right angle to the curve. This applies to the grinding of the cam a well as to the turning on the lathe.
  • a further object of the invention consists in the provision of a method and means for performing all the working operations from turning to grinding on the same machine without interrupting the continuity between turning and finishing,
  • the tool is controlled by a combination of control elements which are characterized substantially by two profiles of which one is used for producing the horizontal components of the tool motion and the other producing the vertical component, both however operating in a cinematically congruent manner over concentric radii of the work.
  • the tool arrier is arranged on a rocking lever of the type of a pendulum lever the lengthening or shortening of which acts on the increase or reduction of the cam excentricity whereby the change of the cam size influences the entire shape of the cam.
  • this rocking lever is rotatable at one end and telescopes for assuring freedom of its movements.
  • FIG. 1 illustrating the inventive principle of the process in the basic position
  • Fig. 2 in a position in which the work has revolved through a certain angle
  • Fig, 3 representing the position for machining the vertex of the cam
  • Fig. 4 the machining position of a further cam flank or face
  • Fig. 5 illustrates the relative path of the control and the curve along which the tool frame (or support) is displaced.
  • Figs. 6 and '7 illustrate diagrammatically the principle according to which the control is adapted to the size of the cam to be produced.
  • Fig. 8 is a side elevation, partlyin section of the machine according to the invention
  • Fig. 9 a plan view of same with the gear box opened
  • Fig. 10 a front view of the machine.
  • Points 3, 4 and 5 have been selectedior demonstrating the operating conditions at the moments of their machining.
  • the perpendicular m to the curve at point 3 encloses angle all with the axis :1: which is also the perpendicular to the curve m in the initial position. If the work is turned through angle as into the position according to the Fig. 2 the perpendicular to the curve is moved to horizontal position.
  • the cam N1 moves the link K1 into the position 3 whereas the cam N2 controls the link K2 in such-a manner that the center SM of the tool is lifted by the distance b3, b3 signifying the distance of the perpendicular to the curve m from the connecting lineMO (Fig. 2) which is identical with the perpendicular to the curve 111 in the starting position.
  • the tool center is located on the perpendioular m to the curve portion 3 of cam N1.
  • Line 113 is identical with the perpendicular m of Fig. 1 turned into the horizontal direction.
  • Figs. 6 and 7 illustrate diagrammatically an embodiment of the invention.
  • Fig. 5 member K1 According to the shape-ofthe relative path in Fig. 5 member K1 produces also the vertical movement. If the device is arranged in such'a manner that the proportion IE3Z$4 is equal to 3011.102 (Fig. '7) the slide L1 will :movealong an enlarged or a reducedrelative path. For adapting the invention to a device of this kind, the
  • n-cornered profile must be produced, therelation A/B will be equal to 1:2, 1:3 or .lzn.
  • the relative path according to Fig. 5 may .be derived from only one circular movement. It isxonly necessary to displace the slides S2 and S1 by diiierentdistances. This is accomplished by providing different toothed wheel gears :b'etween-the spindles Gem and Gene. For grinding anin-corneredfpart the ratio of transmission 1': n'iszemployed.
  • FIGs. 8-10 illustrateby'way oi'example a device or machine embodying the invention.
  • Z1, Z2 and Z3 motor MO drives an exchangeable'cam drum N.
  • the cam drum N displaces the slide K in 'horizontaldirection.
  • the horizontal movement of the body K is transmitted by way of the oscillating member T rotatable about 081 and by way of the ball bearing G2 to the straight-guided slide L1 and the guide F2. Consequently the swinging body Sw will travel along the reduced or increased resulting relative path.
  • the entire swinging body Sw may be rotated about a pin As whereby either the grinding wheel S or the tool holder D51. may be applied.
  • the swinging body may be clamped in any position within its range of movement.
  • the grinding wheel S is driven through the belt RT by a motor M02 located on the swinging body Sw.
  • a motor M02 located on the swinging body Sw.
  • the two motors M01 and M02 (Fig. 10) must be coupled mechanically or electrically.
  • two synchronous motors have been provided.
  • the design of the machine is the same as that of a conventional grinding machine having a head stock II, a bed l2, and puppet I3.
  • a machine for machining cams including a work holder, a movable tool holder, two rotating master cams, means interconnecting said cams and said tools holder for moving it horizontally under the influence of one cam and vertically under the influence of the other cam, and means connected with said first means for varying the magnitude of the horizontal and vertical movements of the tool holder.
  • a machine for machining cams including a work holder, a movable tool holder, two rotating master cams, means interconnecting said cams and said tool holder for moving its horizontally under the influence of one cam and vertically under the influence of the other cam, and means connected with said first means for varying individually the magnitude of the horizontal and vertical movements of the tool holder.
  • a machine for machining cams including a work holder, a movable tool holder, two rotating master cams, means interconnecting said cams and said tool holder for moving it horizontally under the influence of one cam and vertically under the influence of the other cam, and means connected with said first means for varying simultaneously the magnitude of the horizontal and vertical movements of the tool holder.
  • a machine for machining cams including a work holder, a movable tool holder, two rotating master cams, means interconnecting said cams and said tool holder for moving it horizontally under the influence of one cam and vertically under the influence of the other cam, and means connected with said first means for varying simultaneously the magnitude of the horizontal and vertical movements of the tool holder, the
  • a machine for machining cams comprising a rotatable work holder, stationary bearing means for said holder, a tool holder, a movable support rotatably supporting said tool holder, a stationary base member vertically slidably connected with said support, a horizontally swingable lever member, a vertically swingable lever member, pivot means connected with said base member and individually swingably supporting said lever members, connecting means movably connected with said lever members and with said support for transferring the motions of said lever members to said support, a cam shaft rotatably supported by said base member, two master cams fixed on said shaft, a slide member horizontally slidably connected with said base member and movably connected with said first lever member and having a cam follower portion engaging one of said master earns, a second slide member vertically slidably connected with said first slide member and movably connected with said second lever member and having a cam follower portion engaged by the other master cam, and drive means connected with said work holder, with said tool holder, and with said cam shaft
  • a machine as defined in claim 5, comprising individual support means for said pivot means movably connected with said base member and being individually displaceable in the direction of the longitudinal axes of said lever members for adjusting the leverage thereof.
  • a machine as defined in claim 5, comprising individual support means for said pivot means movably connected with said base memher and being individually displaceable in the direction of the longitudinal axes of said lever members for adjusting the leverage thereof, and a common drive means for said support means for moving same simultaneously.
  • lever members comprising telescoping portions for affording free movement of the connections of said lever members with said support and with said slide members.
  • a machine for machining cams comprising a rotatable work holder, stationary bearing means for said holder, a tool holder, a movable support rotatably supporting said tool holder, a stationary base member vertically slidably connected with said support, a horizontally swingable lever member, a vertically swingable lever member, connecting means movably connected with said lever members and with said support for transferring the motions of said lever members to said support, a cam shaft rotatably supported by said base member, two master cams fixed on said shaft, a slide member horizontally slidably connected with said base member and movably connected with said first lever member and having a cam follower portion engaging one of said master cams, a second slide member vertically slidably connected with said first slide member and movably connected with said second lever member and having a cam follower portion engaged by the other master cam, drive means connected with said work holder, with said tool holder, and with said cam shaft for driving these QQOQQTO parts in synchronism, individual
  • a machine for machining cams comprising a rotatable work holder, stationary bear: ing means for said holder, a tool holder, a movable support rotatably supporting said tool hold:- er, a stationary base member vertically slidably connected with said support, a horizontally swingable lever member, a vertically swingable lever member, conn cting means.
  • a machine for machining cams comprising a rotatable work holder, stationary bearing means for said holder, a tool holder, a movable support rotatably supporting said tool holder, a stationary base member vertically slidably connected with said support, a horizontally swingable lever member, a vertically swingable lever member, connecting means,- movably Connected with said; lever members and with said. support for transferring the motions of said: lever members to-v said".
  • support a cam shaft rotatably sup,- ported by said base member, two master cams fixed on said shaft, a slide member horizontally slidably connected with said base member and movably connected with said first lever member and having a.
  • cam follower portion engaging one of said master cams
  • a second slide member vertically slidably connected with said. first slide member and movably connected with.
  • said second lever member and having a cam follower portion engaged by the other master cam
  • drive means connected with said work holder, with said tool holder, and with said cam shaft for driving these parts in synchronism
  • individual pivot means individually swingably supporting saidlever members, bearing means for said pivot means, stationary guide means horizontally, individually slidably supporting said bearing means for displacement thereof in the direction of the longitudinal axes of said lever members, individually threaded spindles screwed individually into said bearing means for displacing same upon rotation of the spindles, a spur gear wheel connected with each spindle, the teethof one wheel registering with the teeth of the other wheel, and a common drive for said wheels.
  • gear wheels having different diameters and tooth numbers for changing the leverage of said lever members in a different degree.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
US767095A 1946-05-25 1947-08-07 Device for producing camshafts and the like Expired - Lifetime US2509070A (en)

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AT2509070X 1946-05-25
AT269578X 1946-05-25

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US2509070A true US2509070A (en) 1950-05-23

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CH (1) CH269578A (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2662424A (en) * 1950-02-03 1953-12-15 Smal Gilles Machine for the shaping of metal pieces, more particularly of saw teeth
US3663188A (en) * 1971-07-20 1972-05-16 Tri Ordinate Corp Cam control grinding machine
US3815288A (en) * 1970-09-28 1974-06-11 Gen Electric Pattern machining system for die rolls
US3824741A (en) * 1970-09-28 1974-07-23 H Wilson Method and apparatus for traversing a cam follower
FR2694228A1 (fr) * 1992-07-31 1994-02-04 Thielenhaus Ernst Kg Procédé pour exécuter la rectification de précision des cames d'arbres à cames et machine de rectification de précision pour la mise en Óoeuvre de ce procédé.

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3625565A1 (de) * 1986-07-29 1988-03-03 Hauni Werke Koerber & Co Kg Verfahren zum schleifen gekruemmter flaechen an werkstuecken
DE4235408A1 (de) * 1992-10-21 1994-04-28 Schaudt Maschinenbau Gmbh Verfahren und Vorrichtung zum Schleifen von unrunden Werkstücken

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB417612A (en) * 1932-04-22 1934-10-09 Asea Ab Improvements in and relating to the grinding of curved surfaces
US2192888A (en) * 1938-08-26 1940-03-12 Lempco Products Inc Resurfacing machine
US2267250A (en) * 1938-03-25 1941-12-23 Ernst Krause & Co A G Production of cross-section profiles bounded by cycloidal curves
US2415062A (en) * 1946-01-24 1947-01-28 Norton Co Cam grinding apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB417612A (en) * 1932-04-22 1934-10-09 Asea Ab Improvements in and relating to the grinding of curved surfaces
US2267250A (en) * 1938-03-25 1941-12-23 Ernst Krause & Co A G Production of cross-section profiles bounded by cycloidal curves
US2192888A (en) * 1938-08-26 1940-03-12 Lempco Products Inc Resurfacing machine
US2415062A (en) * 1946-01-24 1947-01-28 Norton Co Cam grinding apparatus

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2662424A (en) * 1950-02-03 1953-12-15 Smal Gilles Machine for the shaping of metal pieces, more particularly of saw teeth
US3815288A (en) * 1970-09-28 1974-06-11 Gen Electric Pattern machining system for die rolls
US3824741A (en) * 1970-09-28 1974-07-23 H Wilson Method and apparatus for traversing a cam follower
US3663188A (en) * 1971-07-20 1972-05-16 Tri Ordinate Corp Cam control grinding machine
FR2694228A1 (fr) * 1992-07-31 1994-02-04 Thielenhaus Ernst Kg Procédé pour exécuter la rectification de précision des cames d'arbres à cames et machine de rectification de précision pour la mise en Óoeuvre de ce procédé.

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Publication number Publication date
CH269578A (de) 1950-07-15

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