US3126792A - Zwick - Google Patents

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Publication number
US3126792A
US3126792A US3126792DA US3126792A US 3126792 A US3126792 A US 3126792A US 3126792D A US3126792D A US 3126792DA US 3126792 A US3126792 A US 3126792A
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Prior art keywords
slide
arms
horizontal
vertical
machine
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Expired - Lifetime
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44B—MACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
    • B44B1/00—Artist's machines or apparatus equipped with tools or work holders moving or able to be controlled three-dimensionally for making single sculptures or models
    • B44B1/02—Artist's machines or apparatus equipped with tools or work holders moving or able to be controlled three-dimensionally for making single sculptures or models wherein three-dimensional copies are made
    • B44B1/04—Artist's machines or apparatus equipped with tools or work holders moving or able to be controlled three-dimensionally for making single sculptures or models wherein three-dimensional copies are made having devices for changing, e.g. proportionally enlarging or reducing, the shape from an original pattern
    • 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
    • B23Q35/00—Control systems or devices for copying directly from a pattern or a master model; Devices for use in copying manually
    • B23Q35/04—Control systems or devices for copying directly from a pattern or a master model; Devices for use in copying manually using a feeler or the like travelling along the outline of the pattern, model or drawing; Feelers, patterns, or models therefor
    • B23Q35/08—Means for transforming movement of the feeler or the like into feed movement of tool or work
    • B23Q35/20—Means for transforming movement of the feeler or the like into feed movement of tool or work with special means for varying the ratio of reproduction
    • 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
    • Y10T409/30084—Milling with regulation of operation by templet, card, or other replaceable information supply
    • Y10T409/301176—Reproducing means
    • Y10T409/301232—Reproducing means including pantograph cutter-carrier
    • Y10T409/3014—Pivotally supported for vertical movement

Definitions

  • the invention relates to an engraving and copying machine with a movable beam, fitted with holders for tools and tracing stylus, which is guided in parallel to itself.
  • the slide conveyor reciprocating in an arc in the space above the workpiece and the pattern must have such a length that it should enable the beam guided thereon to operate within a shifting range of a length of approximately the distance between the tool and tracing stylus. This construction thus affects the observation of the tool and the pattern.
  • One of the objects of the invention is to provide a construction of mechanism for supporting a parallel-motion beam in an engraving and copying machine in which less weight is supported by said mechanism to provide more stable movement thereof.
  • Another object of the invention is to provide a construction of parallel-motion beam support mechanism for engraving and copying machines in which no torsion moments are imparted to the mechanism during manipulation of the same, so as to render the translatory movements thereof more precise and the mechanism more freely movable in three-dimensional space.
  • a further object of the invention is to provide a construction of engraving and copying machine having a parallel-motion beam mechanism in which the observation of the workpiece and pattern is facilitated.
  • FIG. 1 is a fragmentary side elevation view of an engraving and copying machine showing the parallel-motion beam supporting mechanism of the invention
  • FIG. 2 is a top plan view of the machine of FIG. 1, with the control pantograph linkage indicated diagrammatically by dot-dash lines for purposes of clarity;
  • FIG. 3 is a top plan view similar to FIG. 2, but showing a modified form of the invention.
  • FIG. 4 is a top plan View showing another modified form the invention.
  • the present invention is applicable to engraving and copying machines of various types and for purposes of illustration it is here shown as applied to machines of the general type disclosed in US. Patents 2,176,193 and 2,371,941, and, insofar as details of the construction and operation of the present machine are not disclosed in the present application, such details may be the same as those disclosed in said patents.
  • a support 12 is swingably mounted to pivot around a horizontal axis 4.
  • the pantograph linkage for purposes of illustration, is represented only schematically in FIGS. 2, 3 and 4.
  • a vertical guideway 24 is secured to the machine frame 10 and a slide member 26 is connected to slide on guideway 24 in the vertical plane.
  • a horizontally disposed guideway 30 is carried on the front face of slide member 26 and a horizontal slide member 28 is connected to slide longitudinally along guideway 30 in the horizontal plane.
  • a pair of arms 32 and 34 arranged parallel to each other are each pivoted on one end on vertical pivots carried by the forward face of horizontal slide member 28, and the opposite ends of arms 32 and 34 are connected to vertical pivots carried by a shiftable beam 40.
  • the members 28, 32, 34 and 40 together form what may be termed a single parallelogram linkage arranged so that the beam 40 may swing in an arc when the arms 32 and 34 swing about their pivots on horizontal slide 23 and beam 40, while the beam remains disposed parallel at all times to horizontal slide 28 and all of the possible selected positions the beam itself may assume throughout its arcuate movement.
  • a dog 38 is connected on one of the hinged arms and is disposed to abut the forward face of the horizontal slide member at a selected point in the arc of movement of the beam 40.
  • the shiftable beam 49 may carry any desired number of holders or sockets for receiving a cutting tool, and at least one holder or socket in which a tracing stylus may be placed. Some, or all of these sockets, or holders, may be constructed to receive interchangeably either a cutting tool or a tracing stylus.
  • I have shown the beam 40 carrying holder 44 at one end of the beam adapted to receive the power driven rotary spindle of a cutting tool, and carrying a second holder 42 at the other end of the beam adapted to receive interchangeably either a tracing stylus or a second cutting tool.
  • a horizontal bar 46 providing a guideway, is connected to the upper surface of shiftable beam 46 so that it is disposed at all times substantially normal to the horizontal axis 14.
  • a slide block 50 is disposed to engage the guideway of horizontal bar 46 so that the block is shiftably adjustable to various positions thereon,
  • a tracing stylus 54 is pivotally mounted at 52 to the bar member 22 of the pantograph linkage and the tracing sytlus is held for sliding movement up and down in the vertical plane by means of a guide sleeve 56, through which the stylus extends, supported on one end of a horizontally swingable arm 58.
  • the opposite end of arm 58 is hinged on a vertical pivot to a horizontally swingable linkage 60, which, in turn, is hinged on a vertical pivot carried by the shiftable beam 40'.
  • a control handle 64 is adjustably attached to the end of pantograph bar 22 to depend therefrom, in a position adjacent to the tracing stylus 54, and is grasped by the operator for controlling and guiding the movements of the pantograph, tracing stylus, supporting arms, the shiftable beam carrying the cutting tool and the remainder of the parallelogram mechanism including the horizontal slide and vertical slide members.
  • the weight of the vertical slide member 26 and the horizontal slide member 28, as well as the remainder of the parallelogram mechanism members, etc., supported therefrom, are counterbalanced by suitable spring or weight means as taught in US. Patents 2,176,193 and 2,371,941, so that only slight weight is supported by the pantograph linkage at points 48 and 52, thus making the entire assembly easy to manipulate by means of control handle 64.
  • the pattern 66 is clamped on the model table 68 beneath the stylus 54 and the workpiece 70 is clamped on a work bench '72. beneath the cutting tool held by holder 44 on beam 49.
  • handle 64 the operator moves the stylus 54 over the contour of the pattern 66 and through the linkage arm, beam and slide member arrangement, the cutting tool traces the exact same movement and reproduces these movements on the workpiece 70.
  • the pattern When operating the machine to produce reproductions of equal scale, the pattern is clamped on a table beneath the holder 42, alongside the table 72, and a tracing stylus is inserted in holder 42. As before, the workpiece is clamped on table 72 beneath a cutting tool held in tool holder 44.
  • the pantograph members 16, 18, 20 and 22 need not be used for equal scale reproductions and may be temporarily removed from the machine, if desired, although it is sometimes convenient to leave these members in place and to use them for linkage effect in transmitting the hand movements, of the operator, to the stylus and cutting tool.
  • the shiftable beam 44 carrying the holders 42 and 44, may thus move in all directions in three-dimensional space with a pure movement of translation by means of control levers or arms 32 and 34, horizontal slide 28 and vertical slide 26, and is held atall times against any movement of rotation in the vertical plane and is disposed in the horizontal plane so that all positions of the beam are parallel to each other. Movements having a vertical component are accompanied by movements of vertical slide 26 on guideway 24 and movements of the beam 40, having a horizontal component, are accomplished by swinging the beam in a horizontal are on the 4 pivoted arms 32 and 34 or by moving the entire parallelogram mechanism 40, 32, 34 and 28 by sliding horizontal slide 28 horizontally along its guideway 30 supported by vertical guide 26. However, in most cases, horizontal movement of beam 44) is usually accomplished by a combination of these two movements.
  • the beam 40 In copying machines, as shown in FIG. 3, for handling comparatively large workpieces, the beam 40 must be appropriately longer in length and in order to impart a stable support to the beam it may be connected with a correspondingly longer horizontal slide member 28 by means of a third parallelogram linkage arm 36 hingedly connected between beam 40 and slide 28 in a manner similar to arms 32 and 34.
  • the vertical slide member 26 and its guideway for horizontal slide 28, of necessity, will also have to be constructed longer in length as shown, and in order to provide stable vertical movement to the vertical slide 26 the beam may be supported to the machine frame 10 by means of a pair of vertical guideways 24, as shown in FIGS. 3 and 4, rather than a single guideway as shown in the preferred form of the invention in FIGS. 1 and 2.
  • FIG. 4 I have shown a machine for handling larger type workpieces than could be conveniently handled by the machine shown in FIGS. 1 and 2, or the machine shown in FIG. 3.
  • the vertical slide member and shiftable beam carrying the tool holder are of greater length than shown in the previous forms of the invention and the vertical slide is connected to the machine frame by a pair of guideways 24 in similar manner as shown in FIG. 3.
  • the beam 40 is connected to the vertical slide member by means of two separate parallelogram linkages supported on the slide 26 by means of two horizontal slide members 78 and 80.
  • the arms of the two parallelogram linkages are normally disposed in opposed relation to each other but at a point during their course of movement may become mutually parallel one with the other.
  • the first parallelogram linkage is comprised of beam 40, horizontal slide 78, and control levers or arms 34 and 74, hingedly connected on vertical pivots intermediate the aforesaid members.
  • the second parallelogram linkage is comprised of beam 40, horizontal slide 80 and control levers or arms 32 and 76, hingedly connected on vertical pivots therebetween.
  • horizontal slide members 78 and 80 respectively move inwardly toward each other, until the maximum travel of beam 40 is attained, when parallelogram arms 32, 76, 74 and 34 are mutually parallel to each other and the dogs 38, carried thereby, are disposed in abutment with their respective horizontal slide members.
  • the majority of the weight of the parallelogram linkage is disposed immediately adjacent the machine frame on the vertical slide member to remove excess weight from the arms of the parallelogram linkage so that they only have to support the weight of the beam 44 carrying the tool holders.
  • the overall length of the beam which moves in an arc in the space above the workpiece and the pattern and which is carried by the control levers or arms is substantially confined to the distance between the tool holder 44 and the tracing stylus holder 42, thereby greatly facilitating the observation of the workpiece and pattern respectively positioned beneath the mentioned holders.
  • An engraving and copying machine comprising, a machine frame, a substantially vertical guideway on said frame, a first slide member connected for upward and downward movement along said vertical guideway, a substantially horizontal guideway on said first slide member longer than the working range of the copying machine in the direction parallel to said horizontal guideway, a second slide member movable along said horizontal guideway and provided with pivot connectors at each of its ends such that a line passing through the axes of the pivot connectors is disposed substantially parallel to said horizontal guideway, a pair of rigid lever arms, one end of each lever arm pivotally connected to opposite ends of said second slide member by said pivot connectors, a holder beam provided with pivot connectors adjacent each of its ends, the opposite ends of said rigid lever arms pivotally connected to said holder beam by said pivot connectors, said rigid lever arms forming a parallelogram with said second slide member and said holder beam, a rotary cutting tool connected to one end of said holder beam outwardly of the pivot connector, a pantograph pivotally mounted on said frame and carrying a recording point connected

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  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Machine Tool Copy Controls (AREA)
  • Machine Tool Units (AREA)
US3126792D 1960-09-07 Zwick Expired - Lifetime US3126792A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED34189A DE1179836B (de) 1960-09-07 1960-09-07 Gravier- und Kopiermaschine

Publications (1)

Publication Number Publication Date
US3126792A true US3126792A (en) 1964-03-31

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US3126792D Expired - Lifetime US3126792A (en) 1960-09-07 Zwick

Country Status (4)

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US (1) US3126792A (de)
CH (1) CH386888A (de)
DE (1) DE1179836B (de)
GB (1) GB978941A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3415158A (en) * 1966-04-12 1968-12-10 Overmyer Mould Company Of Penn Mold blank centering and clamping device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2371941A (en) * 1940-01-17 1945-03-20 Zwick Kurt Copying machine
US2713290A (en) * 1950-12-14 1955-07-19 Hans Deckel Copying machine

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE737267C (de) * 1940-01-17 1943-07-09 Friedrich Deckel Praez S Mecha Gravier- und Kopiermaschine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2371941A (en) * 1940-01-17 1945-03-20 Zwick Kurt Copying machine
US2713290A (en) * 1950-12-14 1955-07-19 Hans Deckel Copying machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3415158A (en) * 1966-04-12 1968-12-10 Overmyer Mould Company Of Penn Mold blank centering and clamping device

Also Published As

Publication number Publication date
DE1179836B (de) 1964-10-15
GB978941A (en) 1965-01-01
CH386888A (de) 1965-01-15

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