FR2393625A1 - Rung hole punching tool for ladder side members - can be adjusted to suit angle of convergence of side members - Google Patents

Rung hole punching tool for ladder side members - can be adjusted to suit angle of convergence of side members

Info

Publication number
FR2393625A1
FR2393625A1 FR777717422A FR7717422A FR2393625A1 FR 2393625 A1 FR2393625 A1 FR 2393625A1 FR 777717422 A FR777717422 A FR 777717422A FR 7717422 A FR7717422 A FR 7717422A FR 2393625 A1 FR2393625 A1 FR 2393625A1
Authority
FR
France
Prior art keywords
side members
punch
side member
convergence
adjusted
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.)
Granted
Application number
FR777717422A
Other languages
French (fr)
Other versions
FR2393625B1 (en
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.)
Gubri SA Ets L
Original Assignee
Gubri SA Ets L
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 Gubri SA Ets L filed Critical Gubri SA Ets L
Priority to FR777717422A priority Critical patent/FR2393625A1/en
Priority to IT7849703A priority patent/IT7849703A0/en
Priority to NL7806089A priority patent/NL7806089A/en
Priority to DE2824945A priority patent/DE2824945C2/en
Publication of FR2393625A1 publication Critical patent/FR2393625A1/en
Application granted granted Critical
Publication of FR2393625B1 publication Critical patent/FR2393625B1/fr
Granted legal-status Critical Current

Links

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
    • B21D28/24—Perforating, i.e. punching holes
    • B21D28/28—Perforating, i.e. punching holes in tubes or other hollow bodies

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Punching Or Piercing (AREA)
  • Ladders (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Abstract

The metal holder supports are made of hollow profile. Each has hole parts for retaining the rungs, provided by coaxial punching, using a punch with a guide and two dies pressed against the respective support walls. The punching axis extends at a specified angle to the support centre line. Special tool to punch the holes at the required angle consists of a base (N) supporting a hydraulic or pneumatic cylinder which actuates a punch (15). The side member of the ladder is clamped between two blocks (16, 17) with inclined surfaces which press against the walls (22, 23) of the side member. An insert (20) supports a die (19) whilst the block (17) supports a second die (18) to enable the punch (15) to punch holes in both walls (22, 23) of the side member.
FR777717422A 1977-06-07 1977-06-07 Rung hole punching tool for ladder side members - can be adjusted to suit angle of convergence of side members Granted FR2393625A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FR777717422A FR2393625A1 (en) 1977-06-07 1977-06-07 Rung hole punching tool for ladder side members - can be adjusted to suit angle of convergence of side members
IT7849703A IT7849703A0 (en) 1977-06-07 1978-06-05 PROCEDURE AND DEVICE FOR MANUFACTURING UPRIGHTS FOR METALLIC STAIRS
NL7806089A NL7806089A (en) 1977-06-07 1978-06-05 METHOD AND DEVICE FOR PUNCHING TUBULAR STYLES OF METAL LADDERS AS WELL AS STYLES AND LADDERS OBTAINED IN ACCORDANCE WITH THIS METHOD AND WITH THIS DEVICE.
DE2824945A DE2824945C2 (en) 1977-06-07 1978-06-07 Punching device for the tubular supports of metal conductors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR777717422A FR2393625A1 (en) 1977-06-07 1977-06-07 Rung hole punching tool for ladder side members - can be adjusted to suit angle of convergence of side members

Publications (2)

Publication Number Publication Date
FR2393625A1 true FR2393625A1 (en) 1979-01-05
FR2393625B1 FR2393625B1 (en) 1980-02-15

Family

ID=9191787

Family Applications (1)

Application Number Title Priority Date Filing Date
FR777717422A Granted FR2393625A1 (en) 1977-06-07 1977-06-07 Rung hole punching tool for ladder side members - can be adjusted to suit angle of convergence of side members

Country Status (4)

Country Link
DE (1) DE2824945C2 (en)
FR (1) FR2393625A1 (en)
IT (1) IT7849703A0 (en)
NL (1) NL7806089A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5307715A (en) * 1992-08-31 1994-05-03 Caterpillar Inc. Angle punching die arrangement
AT409097B (en) * 2000-06-16 2002-05-27 Baumgartner Helmuth Ing DEVICE FOR PUNCHING A HOLE IN A HOLLOW PROFILE
GB0915220D0 (en) * 2009-09-02 2009-10-07 Summers Shauna Method and apparatus for forming holes in a hollow tubular body
CN103264091B (en) * 2013-07-05 2014-12-17 武汉大学 Method and device for double-faced punching

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1162355A (en) * 1966-12-08 1969-08-27 Leopold Osthoff Punching Holes in Elongated Bodies
DE6806188U (en) * 1968-11-09 1970-08-06 Osthoff Leopold DEVICE FOR PUNCHING HOLES IN THE WALL OF HOLLOW BODIES OF ANY CROSS SECTION.

Also Published As

Publication number Publication date
FR2393625B1 (en) 1980-02-15
DE2824945C2 (en) 1983-12-15
DE2824945A1 (en) 1978-12-14
IT7849703A0 (en) 1978-06-05
NL7806089A (en) 1978-12-11

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Legal Events

Date Code Title Description
ST Notification of lapse