US1926798A - Leader pin - Google Patents

Leader pin Download PDF

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Publication number
US1926798A
US1926798A US519461A US51946131A US1926798A US 1926798 A US1926798 A US 1926798A US 519461 A US519461 A US 519461A US 51946131 A US51946131 A US 51946131A US 1926798 A US1926798 A US 1926798A
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US
United States
Prior art keywords
pin
ring
leader
leader pin
opening
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
US519461A
Inventor
Emil A Baumbach
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.)
ADVANCE DIE SET Corp
Original Assignee
ADVANCE DIE SET CORP
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 ADVANCE DIE SET CORP filed Critical ADVANCE DIE SET CORP
Priority to US519461A priority Critical patent/US1926798A/en
Application granted granted Critical
Publication of US1926798A publication Critical patent/US1926798A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS, WEDGES, JOINTS OR JOINTING
    • F16B2/00Friction-grip releasable fastenings
    • F16B2/02Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening
    • F16B2/16Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening using rollers or balls
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS, WEDGES, JOINTS OR JOINTING
    • F16B21/00Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings
    • F16B21/10Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings by separate parts
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S403/00Joints and connections
    • Y10S403/08Radially acting cam or eccentric
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T279/00Chucks or sockets
    • Y10T279/10Expanding
    • Y10T279/1037Axially moving actuator
    • Y10T279/1041Wedge
    • Y10T279/1045Internal cone
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T279/00Chucks or sockets
    • Y10T279/10Expanding
    • Y10T279/1037Axially moving actuator
    • Y10T279/1041Wedge
    • Y10T279/1054Wedge with resilient means contacting nonresilient jaw
    • Y10T279/1058Constricting band, annulus, or clip
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00Joints and connections
    • Y10T403/70Interfitted members
    • Y10T403/7062Clamped members
    • Y10T403/7064Clamped members by wedge or cam
    • Y10T403/7066Clamped members by wedge or cam having actuator
    • Y10T403/7067Threaded actuator
    • Y10T403/7069Axially oriented

Description

Patented Sept. 12, I933 unirsofsr-A'res PATENT orries 7 LEADER PIN v Emil A. Baumbach, Chicago, 111;, assignor to Advance Die Set Corporation, Chicago, 111., a corporation of lllinois Application March 2,1931- Serial No. 519,461

*7 Claims. (oi. 287-20) i My invention relates to leaderpinaandmore particularly to leader pins arranged to befsecured in a die shoe to co-operate with, a punch holder for the purpose of accurately aligning .a punch with a die. Y

This invention contemplates a removable lead er pin wherein is :provided a construction by which the pin maybe firmly and securely positioned' in an opening in the die shoe and whichis operable to allow the insertion or removal of thepin at anytime.

A desirable feature. is the provision of means entirely contained within the contour of the pin whereby the leader pin maybe readily removed and replaced and will always be accurately positioned relative to the openings in the punch holder. a 1

-It is also an object to provide a securing mechanism enclosed within the contour. of the pin and win which the. engaging means provides a cover completely. enclosing theoperating mechanism and preventing dust and dirt from entering therein. x

Further objects willbe apparent from the specification and drawing, in which drawing;

Figure 1. is a perspective view of a punch holde. er and die shoe incorporating an embodimentoi my invention; a I

Fig. 2 is a sideelevational View of one of the leader pins in position in the die shoe, a portion of the leader pin and the die shoe being broken away for purposes of illustration;

Fig. 3 is a transverse sectional view through the leader pin and die shoe and taken on a line corresponding to line 33 of Fig. 2, with the clamping ring turned slightly from the position of Fig. 2 and shown in section;

Fig. 4 is a detailed sectional view through the leader pin and taken on a line corresponding to line 44 of Fig. 2; and

Fig. 5 is a detailed sectionalfragmentary View of a portion of the retaining and clamping ring illustrating the means for preventing rotation of.

the ring.

Referring to the drawingthe embodiment illustrated comprises a dieshoe 1, in cooperative relation with a suitable die and a punch holder 2 for supporting a punch which latter cooperates with a suitable die.

A pair of leader pins 3, removably secured in the die shoe, are extended through suitable guide holes 4 in the punch holder for the purpose of accurately aligning the punch and die.

The punch holder and die shoe may be of any being such that the pins can be readily inserted and removed, but yet hold the pins firmly against any lateral movement in the openings. In order to secure a pin in the opening, a plurality of gripping pins 6 are slidably mounted in radially disposed openings '7 in the lower end oi the leader pin 3, and an adjusting screw 8, having a tapered conical end 9, is mountedin a threaded axial opening 10. The tapered conical end 9 is arranged to engage the spherical inner ends of the gripping pins- 6 so that when the screw 8 is operated the conical portion 9 will force the gripping pins outwardly. A resilient split clamping ring ll is arranged in a slot '12-in a position to retain the gripping pins 6 in assembled position when the leader pin is removed from the die holder. .The ring 11 provides a suitable clamp-. ing means ior engaging the die shoe and a groove. 13 is provided in the die shoe to receive the ring llfwhen itis pressed outwardly by the gripping pins 6 as they are moved by the adjusting screw 8. The ring 11 is preferably of sheet-metal and of curved cross-sectional contour, the outer con tour conforming in'shape to the groove 13 and the inner contour conforming substantially to the curvature of the outer ends of the pins 6.

A hexagonal wrench 14 is arranged to be inserted in the hexagonal opening 15 for the purpose of turning the adjusting screw 8 for locking and unlocking the leader pin in the die shoe. When the leader pin is inserted in the opening 5 in the die shoe the screw 8 will'be in a lowered position, and the gripping pins will be pushed inwardly by the ring 11 and the ring will normally be somewhat below the surface of the leader pin. In order to lock the pin in position in the die shoe, the screw 8 is operated to push the gripping pins 6 outwardly and the ring 11 will be forced into the groove 13, and the leader pin will thereby be held rigidly in position. The ends of the split ring 11 are turned inwardly at 16 thereby preventing the ring from rotating to a position where oneof the gripping pins may enter slot 17 through radial openings 7.

In order to remove the leader pin, it is only necessary to turn the screw 8 in a direction to release the gripping pins 6 whereby the ring 11 will automatically be released from the groove 13. It will be seen that this construction is such that the leader pins will be firmly held in the die shoe without any chance of lateral or longitudinal movement and that they may be easily re moved and replaced when desired.

It will be noted that the ring 11 substantially fills the slot 12 and completely covers the radial openings when the pin is removed from the die shoe thereby preventing dirt from entering therein; and providing a device which may be conveniently used or stored under the usual machine shop conditions without injury.

While I have shown but one form of my invention, it will be understood that it may be embodied in other forms and I desire to be limited only by the prior art and the appended claims.

I claim:

1. A leader pin for insertion in an opening in a sup-port, a plurality of radially disposed later ally movable members in said pin, movable means normally within the cylindrical surface of said pin for retaining said movable members normally within the contour of said pinand adjustable means for causing said retaining means to engage the walls of said support opening.

2. A leader pin for insertion in an opening in 3. A combined retainer and clamping ring for,

a pin adjusting means of the character described comprising a resilient sheet metal split'ring of concavoconvex cross-sectional contour, and inwardly extending portions 011 the ends of said ring for engaging theadjusting means to prevent rotation of the ring.

4. In a device for securing guide pins in a support the combination with a support having a cylindrical hole therein and a lateral groove in the wall of said hole, a snugly fitting pin arranged to be inserted in said hole, a lateral groove in said pin, a ring in said pingroove conforming in cross sectional contourto the shape of said support groove and arranged to be expanded in 'in said opening and having a lateral groove for alignment with said support groove, a resilient member in said pin groove and normally below the cylindrical surface of said pin, movable members radially spaced in said pin and engaging the inner surface of said resilient member, and means within said pin and cooperating with said movable members to releasably force said resilient member beyond the surface of said leader pin and into frictional locking engagement with said support groove.

6. A device of the character described compris ing a support having an opening therein for a leader pin and an annular groove arcuate in cross section in the wall of said opening, a snugly fitting pin for insertion in said opening and having a lateral groove of substantially the same width as the support groove and arranged for alignment therewith, a resilient member in said pin groove and. normally below the cylindrical surface of said pin and having a cross sectional contour conforming substantially to the contour of said support groove, movable members radially disposed in said pin and engaging the inner surface of said resilient member, and means within said pin and cooperating with said movable members to releasably force said resilient member be-' yond the surface of said leader pin and into fric- 110 tional locking engagement. with said support groove.

7. A leader pin for insertion in a snugly fitting opening in a support, a plurality of radially disposed laterally movable members in said pin, re-. 115 silient means normally within the contour of said pin and completely enclosing said radial members to prevent the access of dirt thereto, and adjustable means in said pin and cooperating with said radial members to move said resilient means 120 beyond the contour of said pin and into locking engagement with the walls of said opening.

EMIL A. BAUMBACH.

US519461A 1931-03-02 1931-03-02 Leader pin Expired - Lifetime US1926798A (en)

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Application Number Priority Date Filing Date Title
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Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2433617A (en) * 1946-08-03 1947-12-30 Newman M Marsilius Removable guide pin
US2464156A (en) * 1946-02-20 1949-03-08 Sandersen Expanding chuck or mandrel
US2645183A (en) * 1952-02-18 1953-07-14 John B Parsons Starter motor-driven hydraulic pump
US2749987A (en) * 1953-05-01 1956-06-12 Janiszewski Kasimir Die set with a tapered bushing and complementary leader pin
US2793056A (en) * 1955-08-03 1957-05-21 Hoover Ball & Bearing Co Adapter for coupling liquid lines with anti-pullout seal means
US2822986A (en) * 1954-11-09 1958-02-11 Frank J Schreier Rail fastener
US3142468A (en) * 1962-12-04 1964-07-28 Paul L Dodds Cantilever counter stool
US3172294A (en) * 1961-02-06 1965-03-09 Collins Radio Co Shaft coupling arrangement for mechanical modules
US3203219A (en) * 1961-06-12 1965-08-31 Lockheed Aircraft Corp Joggle forming apparatus
US3437362A (en) * 1965-03-20 1969-04-08 Adrian Gottfried Offenbroich Expanding devices
US3441253A (en) * 1967-03-31 1969-04-29 Louis Blum Handrail
US3469823A (en) * 1968-06-18 1969-09-30 Louis Blum Handrail post fitting
US3516644A (en) * 1969-06-23 1970-06-23 Blumcraft Pittsburgh Handrail support means
US3527443A (en) * 1969-01-16 1970-09-08 Louis Blum Handrail post fitting
US3854833A (en) * 1973-12-11 1974-12-17 D Samiran Expandable ring connecting device
US4067657A (en) * 1976-02-17 1978-01-10 Caterpillar Tractor Co. Cam lock retaining means for ripper tips
US4148374A (en) * 1977-09-14 1979-04-10 Sheppard Richard H Universal locating pin for axle mounted power steering
FR2566482A1 (en) * 1984-06-21 1985-12-27 Cuilleron J Locking nut or ring
US4638527A (en) * 1986-02-20 1987-01-27 Fleischhauer Eugene T Vacuum cleaner attachments
FR2638210A1 (en) * 1988-10-20 1990-04-27 Sarel Sa BINDING PART FOR ASSEMBLING PROFILES
US4929118A (en) * 1988-09-26 1990-05-29 Anderson Ronald L Shaft mounted locking means
DE4124590A1 (en) * 1991-07-25 1993-01-28 Hasco Normalien Hasenclever Co Quick release locating pin for clamping e.g. injection moulds - has radial cams locked by central plunger in annular recess of baseplate with screw or hydraulic drive and spring return
DE4215639A1 (en) * 1992-03-07 1993-09-16 Bermatingen Maschf Safety locking system for discharge door of baling press - has sliding locking bolt that is mechanically locked and is released by actuation of stepping motor when press ram is withdrawn
DE4209651A1 (en) * 1992-03-25 1993-09-30 Bermatingen Maschf Press
US5255586A (en) * 1992-07-30 1993-10-26 Newhausen Larry E Radial arm saw circle cutting apparatus
EP0611693A1 (en) * 1993-02-19 1994-08-24 ETAT FRANCAIS Représenté par le délégué général pour l'armement Harpoon head and harpoons equipped with such a head for mooring helicopters on platforms
US5530205A (en) * 1994-07-29 1996-06-25 Eaton Corporation Apparatus for securing bus bars to switches in alternative positions
US20080095879A1 (en) * 2006-10-20 2008-04-24 Hon Hai Precision Industry Co., Ltd. Mold locking device and molds using the same
US20090064488A1 (en) * 2005-04-14 2009-03-12 Brian Davies Fastener
US20140060129A1 (en) * 2012-08-31 2014-03-06 Ron R. Daniels Lock Device and Method of Use
CN104204578A (en) * 2012-01-26 2014-12-10 英派尔科技开发有限公司 Expanding fastener
US9194410B2 (en) 2011-04-20 2015-11-24 Brian Investments Pty Ltd Nutless bolt
US20160222634A1 (en) * 2013-09-12 2016-08-04 Rialca Due Di Chiolerio Paolo Giovanni Device for securing teeth to tooth adapters of an earth-moving machine through pins

Cited By (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2464156A (en) * 1946-02-20 1949-03-08 Sandersen Expanding chuck or mandrel
US2433617A (en) * 1946-08-03 1947-12-30 Newman M Marsilius Removable guide pin
US2645183A (en) * 1952-02-18 1953-07-14 John B Parsons Starter motor-driven hydraulic pump
US2749987A (en) * 1953-05-01 1956-06-12 Janiszewski Kasimir Die set with a tapered bushing and complementary leader pin
US2822986A (en) * 1954-11-09 1958-02-11 Frank J Schreier Rail fastener
US2793056A (en) * 1955-08-03 1957-05-21 Hoover Ball & Bearing Co Adapter for coupling liquid lines with anti-pullout seal means
US3172294A (en) * 1961-02-06 1965-03-09 Collins Radio Co Shaft coupling arrangement for mechanical modules
US3203219A (en) * 1961-06-12 1965-08-31 Lockheed Aircraft Corp Joggle forming apparatus
US3142468A (en) * 1962-12-04 1964-07-28 Paul L Dodds Cantilever counter stool
US3437362A (en) * 1965-03-20 1969-04-08 Adrian Gottfried Offenbroich Expanding devices
US3441253A (en) * 1967-03-31 1969-04-29 Louis Blum Handrail
US3469823A (en) * 1968-06-18 1969-09-30 Louis Blum Handrail post fitting
US3527443A (en) * 1969-01-16 1970-09-08 Louis Blum Handrail post fitting
US3516644A (en) * 1969-06-23 1970-06-23 Blumcraft Pittsburgh Handrail support means
US3854833A (en) * 1973-12-11 1974-12-17 D Samiran Expandable ring connecting device
US4067657A (en) * 1976-02-17 1978-01-10 Caterpillar Tractor Co. Cam lock retaining means for ripper tips
US4148374A (en) * 1977-09-14 1979-04-10 Sheppard Richard H Universal locating pin for axle mounted power steering
FR2566482A1 (en) * 1984-06-21 1985-12-27 Cuilleron J Locking nut or ring
US4638527A (en) * 1986-02-20 1987-01-27 Fleischhauer Eugene T Vacuum cleaner attachments
US4929118A (en) * 1988-09-26 1990-05-29 Anderson Ronald L Shaft mounted locking means
FR2638210A1 (en) * 1988-10-20 1990-04-27 Sarel Sa BINDING PART FOR ASSEMBLING PROFILES
EP0373008A1 (en) * 1988-10-20 1990-06-13 Merlin Gerin Connecting device for the assembly of profiles
DE4124590A1 (en) * 1991-07-25 1993-01-28 Hasco Normalien Hasenclever Co Quick release locating pin for clamping e.g. injection moulds - has radial cams locked by central plunger in annular recess of baseplate with screw or hydraulic drive and spring return
DE4215639A1 (en) * 1992-03-07 1993-09-16 Bermatingen Maschf Safety locking system for discharge door of baling press - has sliding locking bolt that is mechanically locked and is released by actuation of stepping motor when press ram is withdrawn
DE4209651A1 (en) * 1992-03-25 1993-09-30 Bermatingen Maschf Press
US5255586A (en) * 1992-07-30 1993-10-26 Newhausen Larry E Radial arm saw circle cutting apparatus
EP0611693A1 (en) * 1993-02-19 1994-08-24 ETAT FRANCAIS Représenté par le délégué général pour l'armement Harpoon head and harpoons equipped with such a head for mooring helicopters on platforms
FR2701689A1 (en) * 1993-02-19 1994-08-26 France Etat Armement Harpoon heads and harpoons with these heads for securing helicopters on platforms.
US5530205A (en) * 1994-07-29 1996-06-25 Eaton Corporation Apparatus for securing bus bars to switches in alternative positions
US8549724B2 (en) * 2005-04-14 2013-10-08 Brain Investments PTY Ltd. Fastener
US20090064488A1 (en) * 2005-04-14 2009-03-12 Brian Davies Fastener
US20080095879A1 (en) * 2006-10-20 2008-04-24 Hon Hai Precision Industry Co., Ltd. Mold locking device and molds using the same
US9194410B2 (en) 2011-04-20 2015-11-24 Brian Investments Pty Ltd Nutless bolt
CN104204578A (en) * 2012-01-26 2014-12-10 英派尔科技开发有限公司 Expanding fastener
US20150139748A1 (en) * 2012-01-26 2015-05-21 Empire Technology Development Llc Expanding fastener
AU2012367292B2 (en) * 2012-01-26 2016-09-22 Empire Technology Development Llc Expanding fastener
US9506494B2 (en) * 2012-01-26 2016-11-29 Empire Technology Development Llc Expanding fastener
US20140060129A1 (en) * 2012-08-31 2014-03-06 Ron R. Daniels Lock Device and Method of Use
US9464461B2 (en) * 2012-08-31 2016-10-11 Ron R. Daniels Lock device and method of use
US20160222634A1 (en) * 2013-09-12 2016-08-04 Rialca Due Di Chiolerio Paolo Giovanni Device for securing teeth to tooth adapters of an earth-moving machine through pins

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