US3862561A - Apparatus for forming thorn-like projections - Google Patents

Apparatus for forming thorn-like projections Download PDF

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Publication number
US3862561A
US3862561A US45933074A US3862561A US 3862561 A US3862561 A US 3862561A US 45933074 A US45933074 A US 45933074A US 3862561 A US3862561 A US 3862561A
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US
United States
Prior art keywords
arm
biting
arm means
accordance
workpiece
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
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English (en)
Inventor
Yoshitaka Uebayashi
Koji Tashiro
Toshifumi Anayama
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mazda Motor Corp
Original Assignee
Toyo Kogyo Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toyo Kogyo Co Ltd filed Critical Toyo Kogyo Co Ltd
Application granted granted Critical
Publication of US3862561A publication Critical patent/US3862561A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B21D31/00—Other methods for working sheet metal, metal tubes, metal profiles
    • 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
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
    • B21J5/068—Shaving, skiving or scarifying for forming lifted portions, e.g. slices or barbs, on the surface of the material
    • 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
    • Y10T83/02—Other than completely through work thickness

Definitions

  • ABSTRACT An apparatus for forming thorn-like projections on a workpiece surface wherein biting cuttersare mounted on a swingable surface and brought into biting engagement with said surface upon each swinging movement of the arm.
  • the projection formed workpiece surface may be thereafter used for casting another metal thereon.
  • the present invention relates to an apparatus for forming a thorny surface and more particularly to an apparatus for forming thorn-like projections on a metal surface.
  • Such projections have been provided by spring-biased biting means.
  • a rotatable cam is provided for moving the biting means against the influence of the spring-bias force apart from the metal surface and, as the cam is rotated, the biting means is cyclically allowed to bite into the metal surface.
  • the biting means since the biting means is brought into biting engagement under the spring-bias force, it is often damaged and moreover when the biting edges are worn it becomes no longer possible to form desired thornlike projections uniformly throughout the metal surface.
  • the present invention therefore, has an object to eliminate the aforementioned problems of known apparatus.
  • Another object of the present invention is to provide an apparatus for forming thorn-like projections on a workpiece surface, which is durable and can effectively form uniform projections.
  • an apparatus for forming thorn-like projections on a surface of a workpiece comprising a stationary frame having a work supporting platform, first swingable arm means having one end pivotably supported on said frame, said first arm means having surface means confronting to said platform, second swingable arm means pivotably supported'on' said frame and having biting cutter means provided on lower side thereof, means for biasing said second arm means upwardly with respect to said first arm means, vertically movable actuating means disposed above said first and second arm means, and linkage means'for transferring downward movement of the actuating means to said first and second arm means whereby when the actuating means is moved downwardly the surface means of the first arm means is brought into holding engagement with a workpiece on said platform and thereafter upon further downward movement of the actuating means said second arm means is swung to bring the biting cutter means into biting engagement with the workpiece.
  • a pair of first swingable arms are disposed at the opposite sides of the frame and a second swingable arm is provided between said first arms.
  • the linkage means may comprise a vertical link having a lower end pivotably connected to said first arm at a position remote from the pivotably supported end of the first arm, a horizontal link connected at one end with the upper end of the vertical link and the other end with said second arm, and a third link extending between the actuating means and the intermediate portion of the horizontal link.
  • the biting cutter means comprises a plurality of biting edges which are disposed in two rows, the edges in one of the rows being longer than those in the other row. Further, the two rows of biting edges are preferably arranged in a staggered relationship with each other.
  • the apparatus of the present invention is particularly suitable for forming thorn-like projections on a metal surface but it may be used for other kinds of workpieces.
  • FIG. 1 is a side view of a thorn-like projection forming apparatus in accordance with one embodiments of the present invention
  • FIG. 2 is a sectional view taken substantially along the line IIII in FIG. 1;
  • FIG. 3 is a perspective view of biting cutter used in the apparatus shown in FIG. 1;
  • FIG. 4 is a side view of the biting cutter shown in FIG. 3;
  • FIG. 5(a), (b) and (c) show the biting action of the cutter.
  • an apparatus including a frame 1 which has a workpiece holding platform 2 on which a workpiece W such as a steel sheet is advanced in the direction shown by an arrow A.
  • a pair of brackets 3 are disposed at the opposite sides of the frame 1 and secured thereto by means of a plurality of bolts 4.
  • the brackets 3 support a transversely extending shaft 5 on which a swingable arm 11 is rotatably mounted through a bearing 6.
  • a pair of swingable arms 7 are mounted one on each side of the frame with one end pivotably supported by a shaft 8 through a bearing 9.
  • Each of the arms 7 has a slot 10 which allows the shaft 5 to pass there-through, and extends over the platform 2 to define an extension 7a.
  • a vertically movable actuating member R which may be a movable element of a pressing machine (not shown).
  • a link 13 is connected at its upper end with the actuating member R through a pin 12 and bearing 20 and at its lower end with intermediate portion of a horizontal link 14 through a pin 15 and a bearing 21.
  • the horizontal link 14 has one end connected with the free end of the swingable arm 11 through a pin 16 and a bearing 22, and the other end with the upper end of a vertical link 17 through a pin 18 and a bearing 23.
  • the other end of the vertical link 17 is connected to the swingable arm 7 at its extension 7a.
  • the actuating member R carries a bracket 25 which has a bearing 26 mounted thereon for slidably receiving a vertical guide rod 28 and permitting pivotal movement of the rod 28 in the plane of the sheet of drawing.
  • the guide rod 28 has a lower end carried on the swingable arm 7 at its free end through abearing 27 which allows pivotal movement of the rod 28 in the plane of the sheet of drawing.
  • a compression spring S is disposed between the bearings 26 and 27 so as to force the bearings 26 and 27 apart from each other whereby the free end of the swingable arm 11 normally biased upwardly.
  • a biting cutter 29 including two rows of biting edges 30 and 31 which are respectively separated by grooves 32 and 33. As shown in FIG. 3, the biting edges 30 and 31 are arranged in staggered relationship with each other. Further, in order to securely hold the cutter 29 in place, a holding member 36 is mounted on the arm 11 by means of a bolt 39. From FIGS. 1 and 4, it will be seen that the distances from the center of swinging movement of the arm 11 and the biting edges 30 and 31 are different from each other.
  • the arms 7 carries at its lower side a depressing plate 40 which is mounted thereon by a plurality of pins 42 at a position confronting to said platform 1, and the platform 1 is provided with a platen 41 which cooperates with the plate 40.
  • the actuating member R is moved upwardly, the workpiece W is advanced, and the operation cycle is repeated.
  • the projections T may be directed in somewhat different directions from the projections.
  • the thorn-like projections T, and T are also formed in similar positional relationship. This will provide an advantage in that, when the workpiece W is a metal plate on which another metal is casted, uniform bonding strength can be assured between the workpiece and the casted metal in all directions along the workpiece surface.
  • the biting thrust of the biting edges is substantially proportional to the holding effect applied by the depressing member to the workpiece so that the biting cutter can be used without trouble even when the biting edges are worn to some extent.
  • An apparatus for forming thorn-like projections on a surfact of a workpiece comprising a stationary frame having a work supporting platform, first swingable arm means having one end pivotably supported on said frame, said first arm means having surface means confronting to said platform, second swingable arm means pivotably supported on said frame and having biting cutter means provided on lower side thereof, means for biasing said second arm means upwardly with respect to said first arm means, vertically movable actuating means disposed above said first and second arm means, and linkage means for transferring downward movement of the actuating means to said first and second arm means whereby when the actuating means is moved downwardly the surface means of the first arm means is brought into holding engagement with a workpiece on said platform and thereafter upon further downward movement of the actuating means said second arm means is swung to bring the biting cutter means into biting engagement with the workpiece.
  • said first arm means includes a pair of first swingable arms disposed one at each side of the frame and said second swingable arm means includes a second arm disposed between said pair of first arms.
  • said linkage means comprises a vertical link having a lower end pivotably connected to said first arm means at a position remote from said one end thereof, a horizontal link connected at one end with upper end of the vertical link and the other end with said second arm means, and a third link extending between the actuating means and an intermediate portion of the horizontal link.
  • biting cutter means comprises a plurality of biting edges which are disposed in two rows, the edges in one of the rows being disposed far from the center of swinging movement of said second arm means than those in the other row so that the edges in the rows are brought into biting engagement in sequence.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Coating With Molten Metal (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Knives (AREA)
  • Nonmetal Cutting Devices (AREA)
  • Shearing Machines (AREA)
US45933074 1973-04-10 1974-04-09 Apparatus for forming thorn-like projections Expired - Lifetime US3862561A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4058173A JPS5135547B2 (enrdf_load_stackoverflow) 1973-04-10 1973-04-10

Publications (1)

Publication Number Publication Date
US3862561A true US3862561A (en) 1975-01-28

Family

ID=12584444

Family Applications (1)

Application Number Title Priority Date Filing Date
US45933074 Expired - Lifetime US3862561A (en) 1973-04-10 1974-04-09 Apparatus for forming thorn-like projections

Country Status (4)

Country Link
US (1) US3862561A (enrdf_load_stackoverflow)
JP (1) JPS5135547B2 (enrdf_load_stackoverflow)
DE (1) DE2417631C3 (enrdf_load_stackoverflow)
FR (1) FR2225229B1 (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6189361B1 (en) * 1997-09-04 2001-02-20 Amada Metrecs Company Limited Tool for forming protrusions in material by cutting and deforming
US20060231534A1 (en) * 2003-08-12 2006-10-19 Hill John E Method of laser welding coated members

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5462951U (enrdf_load_stackoverflow) * 1977-10-11 1979-05-02
CA2778455C (en) 2012-05-29 2019-04-09 Ray Arbesman Bulk textured material sheeting
US9950495B2 (en) 2014-07-24 2018-04-24 Nugripmetal S.A.R.L. System and method for additive manufacturing of a three-dimensional object
US10010923B1 (en) 2017-09-13 2018-07-03 Nugripmetal S.A.R.L. Textured sheet metal

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2114072A (en) * 1935-05-07 1938-04-12 Ralph E Cleveland Press roll for paper making machines and the method of making same
US2480711A (en) * 1944-12-08 1949-08-30 Robert G Calton Continuous method of forming and porcelain enameling sheet metal
US2953043A (en) * 1955-09-03 1960-09-20 Trebitsch Guido Punch press
US3119289A (en) * 1960-07-01 1964-01-28 Nat Electric Welding Machines Method for planishing a pair of seam-joined metal sheets
US3742753A (en) * 1972-08-16 1973-07-03 G Biesenbach Method of constructing a spark wheel
US3821347A (en) * 1972-10-19 1974-06-28 R Katoh Process for producing a structural concrete block

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2114072A (en) * 1935-05-07 1938-04-12 Ralph E Cleveland Press roll for paper making machines and the method of making same
US2480711A (en) * 1944-12-08 1949-08-30 Robert G Calton Continuous method of forming and porcelain enameling sheet metal
US2953043A (en) * 1955-09-03 1960-09-20 Trebitsch Guido Punch press
US3119289A (en) * 1960-07-01 1964-01-28 Nat Electric Welding Machines Method for planishing a pair of seam-joined metal sheets
US3742753A (en) * 1972-08-16 1973-07-03 G Biesenbach Method of constructing a spark wheel
US3821347A (en) * 1972-10-19 1974-06-28 R Katoh Process for producing a structural concrete block

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6189361B1 (en) * 1997-09-04 2001-02-20 Amada Metrecs Company Limited Tool for forming protrusions in material by cutting and deforming
US20060231534A1 (en) * 2003-08-12 2006-10-19 Hill John E Method of laser welding coated members

Also Published As

Publication number Publication date
DE2417631A1 (de) 1974-11-28
JPS5135547B2 (enrdf_load_stackoverflow) 1976-10-02
FR2225229A1 (enrdf_load_stackoverflow) 1974-11-08
DE2417631C3 (de) 1980-10-16
JPS49126532A (enrdf_load_stackoverflow) 1974-12-04
FR2225229B1 (enrdf_load_stackoverflow) 1979-10-12
DE2417631B2 (de) 1980-02-14

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