US191074A - Improvement in machines for punching metal - Google Patents

Improvement in machines for punching metal Download PDF

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Publication number
US191074A
US191074A US191074DA US191074A US 191074 A US191074 A US 191074A US 191074D A US191074D A US 191074DA US 191074 A US191074 A US 191074A
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United States
Prior art keywords
lever
machines
improvement
bed
punching metal
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Expired - Lifetime
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
    • B21D28/20—Applications of drives for reducing noise or wear
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/2053—Type of pump
    • F15B2211/20538—Type of pump constant capacity
    • 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
    • Y10T29/00—Metal working
    • Y10T29/35—Tire upsetting, with cutting, punching, etc.
    • 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
    • Y10T83/00—Cutting
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/8821—With simple rectilinear reciprocating motion only
    • Y10T83/8827—Means to vary force on, or speed of, tool during stroke
    • 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
    • Y10T83/00—Cutting
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/8821—With simple rectilinear reciprocating motion only
    • Y10T83/8841—Tool driver movable relative to tool support
    • Y10T83/8843—Cam or eccentric revolving about fixed axis

Definitions

  • ADAM ROBERTSON OF BLANOHARDSVILLE, WISCONSIN, ASSIGNOR TO HIMSELF AND HENRY B.
  • MASON OF SAME PLACE.
  • My invention relates to certain improvements in punching-machines; and it consists in a combination of cam-levers, by which the required power is applied.
  • the object of the invention is to provide a means for applying power to the punch to the best advantage.
  • A is the bed of the machine, which is placed upon a suitable support.
  • B is a right-angled support for the dies, that is formed on the end of the bed A.
  • C is a die that is provided with several holes for punches, and is adjustably attached to the support B by a bolt, a.
  • D is a follower that moves in a guide, E, attached to the bed, and F is a movable block that is attached to the end of the follower and slides in the slot in the bed.
  • the follower D carries a punch, I).
  • G is a cam-lever that is journaled in ears 0 0, attached to the bed of the machine, and bears against the block F.
  • the cam formed at the end of the lever is of such form that as the lever is pressed down the point of contact between the lever and the block F becomes more remote from the fulcrum of the lever; but this loss is more than compensated for by the peculiar form and arrangement of the lever H, with which it engages.
  • the lever H is curved in the form of an irregular volute from d to its fulcrum e, and its outer end is bent into convenient form for a handle.
  • a fork, f is formed on the end of the lever G, for supporting a friction-roller, g, between which and the lever G the lever H passes.
  • a loop, t" is attached to the block F, and passes around the lever G, for drawing the follower back and removing the punch from the metal.
  • the guide E and block F are provided with ears h, to which fluted eccentrics j j are pivoted for clamping tire, for the purpose of upsetting it.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
  • Portable Nailing Machines And Staplers (AREA)

Description

I A. ROBERTSON. MACHINE FOR PUN'CHING METAL. I
No. 191,074. Patented May 22,1877.
Jgyt- WITNESSE I INV T0 W sh/m/ N.FETERS. PHOTO-LITNOGRAPHER. WASHINGTDN. D c.
ATTUBNEYS.
UNITED STATES PATENT OFFICE,
ADAM ROBERTSON, OF BLANOHARDSVILLE, WISCONSIN, ASSIGNOR TO HIMSELF AND HENRY B. MASON, OF SAME PLACE.
IMPROVEMENT IN MACHINES FOR PUNCHING METAL.
Specification forming part of Letters Patent No. 191,074, dated May 22, 1877; application filed October 30, 1876.
To all whom it may concern:
Be it known that I, ADAM ROBERTSON, of Blanchardsville, in the county of La Fayette and State of Wisconsin, have invented a new and useful Improvement in Punching Machines, of which the following is a specification Figure l is a side elevation .in part section on linear w in Fig. 2. Fig. 2 is a top View.
Similar letters of reference indicate corresponding parts.
My invention relates to certain improvements in punching-machines; and it consists in a combination of cam-levers, by which the required power is applied.
The object of the invention is to provide a means for applying power to the punch to the best advantage.
A is the bed of the machine, which is placed upon a suitable support. B is a right-angled support for the dies, that is formed on the end of the bed A. C is a die that is provided with several holes for punches, and is adjustably attached to the support B by a bolt, a. D is a follower that moves in a guide, E, attached to the bed, and F is a movable block that is attached to the end of the follower and slides in the slot in the bed. The follower D carries a punch, I). G is a cam-lever that is journaled in ears 0 0, attached to the bed of the machine, and bears against the block F.
The cam formed at the end of the lever is of such form that as the lever is pressed down the point of contact between the lever and the block F becomes more remote from the fulcrum of the lever; but this loss is more than compensated for by the peculiar form and arrangement of the lever H, with which it engages.
The lever H is curved in the form of an irregular volute from d to its fulcrum e, and its outer end is bent into convenient form for a handle. A fork, f, is formed on the end of the lever G, for supporting a friction-roller, g, between which and the lever G the lever H passes.
A loop, t", is attached to the block F, and passes around the lever G, for drawing the follower back and removing the punch from the metal.
The fulcrum of the lever H being in the end of the bed, and that of the lever G being in the ears near the bed, brings the strain in nearly a straight line.
The guide E and block F are provided with ears h, to which fluted eccentrics j j are pivoted for clamping tire, for the purpose of upsetting it.
It will be seenthat as the lever His brought into the position shown in the dotted lines in the drawing, the roller 9 draws constantly nearer the fulcrum of the said lever, thereby increasing its advantage over the lever G, which, by the form of its cam, Works against the block F with a slightly-decreasing efliciency; but this loss is more than compensated by the advantage gained in the lever H.
Having thus described my invention, I claim as new and desire to secure by Letters Patent The combination of the curved lever H, cam-lever G, friction-roller g, movable block F, follower D, guide E, and bed A, substantially as shown and described.
ADAM ROBERTSON.
Witnesses:
J. S. WADDINGTON, L. W. DEVOE.
US191074D Improvement in machines for punching metal Expired - Lifetime US191074A (en)

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