US3926082A - Punching device having adjustable guide retainer - Google Patents
Punching device having adjustable guide retainer Download PDFInfo
- Publication number
- US3926082A US3926082A US550759A US55075975A US3926082A US 3926082 A US3926082 A US 3926082A US 550759 A US550759 A US 550759A US 55075975 A US55075975 A US 55075975A US 3926082 A US3926082 A US 3926082A
- Authority
- US
- United States
- Prior art keywords
- sleeve
- punching device
- retainer plate
- plate
- upper arm
- 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
Links
Images
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
- B21D45/00—Ejecting or stripping-off devices arranged in machines or tools dealt with in this subclass
- B21D45/003—Ejecting or stripping-off devices arranged in machines or tools dealt with in this subclass in punching machines or punching tools
- B21D45/006—Stripping-off devices
-
- 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
-
- 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
- Y10T83/202—With product handling means
- Y10T83/2092—Means to move, guide, or permit free fall or flight of product
- Y10T83/2096—Means to move product out of contact with tool
- Y10T83/2135—Moving stripper timed with tool stroke
- Y10T83/215—Carried by moving tool element or its support
- Y10T83/2155—Stripper biased against product
- Y10T83/2159—By spring means
-
- 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
- Y10T83/872—With guard means
- Y10T83/8722—Static
- Y10T83/8723—Adjustable
-
- 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
- Y10T83/929—Tool or tool with support
- Y10T83/9457—Joint or connection
- Y10T83/9473—For rectilinearly reciprocating tool
- Y10T83/9483—Adjustable
Definitions
- a punching device includes a C-frame on which a punch and stripper assembly is upwardly urged by a lifter spring, there being a rotatably adjustable retainer plate having various shoulders positionable in a recess in the stripper sleeve for selecting the pinch point clearance, namely the clearance between the stripping sleeve and the die.
- This invention relates to a punching device of the sub-press type for use in a punch press, press brake or the like.
- the sleeve not only guides the punch and serves a stripping function, but also serves a safety guarding function around the punch tip.
- Another object of the present invention is to provide a construction for a punching device wherein the clearance above a workpiece in such punching device at the pinch point can be adjusted in increments of one-eighth inch.
- FIG. 1 is a fragmentary side view of a punching device in accordance with the present invention
- FIG. 2 is a fragmentary cross-sectional view taken along line IIII of FIG. 1 with the punch removed, a retainer plate being at a first position corresponding to that of FIG. 1;
- FIGS. 3 and 4 correspond to FIG. 1 but with the retainer plate placed at other positions.
- the principles of the present invention are particularly useful when embodied in a punching device of the sub-press type such as shown fragmentarily in FIG. 1 generally indicated by the numeral 10.
- the punching device includes a frame 11 such as of the C-frame type having a lower arm 12 supporting a die 13, and an upper arm 14 having a vertical bore 15 in registration with the die 13.
- the upper arm 14 supports and guides a punch and stripper assembly which includes a punch guide and stripper sleeve 18, having a recess 16 which faces the bore 15, the lower end of the recess 16 being a shoulder 17 which faces away from the die 13.
- a punch 19 having a body 20 is slidably guided in a bore 21 of the stripper sleeve 18, and a stripper spring 22 which may be a single spring but which is here shown as being a plurality of Belleville springs arranged in a nonnested manner.
- the stripping spring 22 acts between the upper surface 23 of the stripper surface sleeve 18 and a lower surface 24 of a punch head 25 to urge the punch 19 in a direction so as to draw the punch body 20 and its cutting tip into the stripper sleeve 18 so that an upper surface 26 of the punch body engages an internal downwardly directed shoulder 27 forming a part of and disposed within the stripper sleeve 18.
- the punch 19 and stripper sleeve 18 preferably include keying means for angularly orienting the punch 19 with respect to the frame 1 1, such keying means here comprising and elongated slot (not shown) in the stripper sleeve 18 and a key (not shown) secured to the body 20 of the punch 19.
- such keying means here comprising an elongated slot 28 in the stripper sleeve 18 and a key 29 retractably secured to the upper arm 14 of the frame 11.
- a lifting spring 30 acts between the upper surface of the upper arm 14 and the lower side of a flange 31 on the stripper sleeve 18 to retract the punch and stripper assembly, namely to retract the stripper sleeve 18 along with the punch 19 and the stripper spring 22 so as to provide maximum clearance between the die 13 and the lower surface of the upper arm 14.
- a retainer plate 32 on the upper surface of the upper arm 14 in such position that a circular peripheral portion thereof may overlap the bore 15.
- the retainer plate 32 has three circular peripheral portions 33, 34 and 35 which can overhang the bore 15 located in three quadrants while the fourth quadrant includes a peripheral portion 36, the outer edge of which is flat and forms a vertical clearance wall 37 which, when the retainer plate is moved, is substantially tangential to the bore 15 with a slight clearance between it and the sleeve 18 to enable removal of the sleeve.
- a pair of partial vertical clearance walls 38,39 form part of the peripheral portions 33,35, the three clearance walls jointly being disposed as three sides of a square.
- the peripheral portion 34 has a vertical extent that is the same as the thickness of the retainer plate 32 while the peripheral portions 33,35 are under cutup to the vertical walls 38,39 to provide a pair of downwardly facing shoulders 40,41.
- the lower surface of the peripheral portion 34 can also be considered as being a shoulder 42.
- Each of the three shoulders 40-42 faces downwardly, namely toward the die and are each located at different distances from the die 13.
- Each of the shoulders 40-42 respectively can engage the sleeve shoulder 17 in response to having been repositioned in registration therewith.
- peripheral portions 33-35 overhang the bore so that in operation, one of those three projects into the sleeve recess 16 and also projects beneath the lower end of the lifting spring 30, each having a circular periphery as best seen in FIG. 2.
- the retainer plate 32 has a central opening 43 within which is snugly received a central non-threaded bearing portion 44 of a shoulder screw generally indicated at 45.
- the retainer plate 32 is movably secured to the upper side so that various ones of the shoulders 40-42 may be moved into registration with the shoulder 17.
- the shoulder screw 45 not only secures the retainer plate 32 to the upper side of the upper arm but also provides guidance by which the same may be rotated without loss of or change of radial position.
- the upper arm 14 is recessed at 46 to provide peripheral clearance for the retainer plate 32, the recess 46 being of such depth that the upper surface 47 of the retainer plate 32 is coplanar with the upper surface of the arm 14.
- detent means generally indicated at 48 are provided for acting between the upper arm 14 and the retainer plate 32.
- the detent means includes a spring biased ball 49 which is received in one of four ball-receptive recesses 50-53, the recesses 50, 52, 53 being openings that extend through the retainer plate 32.
- the recesses 50-53 are located a uniform distance from the axis of the shoulder screw 45, and the detent means 48 functions to accurately locate each of the four peripheral portions 33-36 in a predetermined angular position.
- the retainer plate is positioned as shown in FIGS. 1 and 2. To reduce the clearance, such as by one-eighth inch, the retainer plate 32 is rotated to the position shown in FIG. 3. A pointed instrument may be inserted in the recess 53 to facilitate such rotation, the detent means 48 having assisted in the final accurate angular location of the retainer plate 32. In order to further reduce the clearance by one-eighth inch, the retainer plate 32 is rotated so that the portion 34 projects into the recess 16 for engaging the sleeve shoulder 17.
- the relatively weak lifter spring 30 first yields, thus completely closing the gap between the lower edge of the stripper sleeve 18 and the workpiece, this area having been referred to herein as the pinch point.
- the retainer plate 32 is set as shown in FIG. 4 from which it is evident that from a safety standpoint, it would be difficult to have the operators fingers accidentally get under the punch and sleeve.
- a punching device comprising:
- a frame having a lower arm on which a die is supported, and an upper arm having a vertical bore aligned therewith;
- a punch-guide and stripper sleeve slidably disposed in the bore in said upper arm, there being a recess facing said bore and defining a shoulder facing away from said die;
- a punch having a body slidably disposed in said sleeve;
- a retainer plate movably secured to the upper side of said upper arm, said plate having a plurality of peripheral portions for overhanging said bore and projecting into said recess of said sleeve, said portions each having a shoulder (l) facing toward said die, (2) being located at differing distances from said die, and (3) being respectively engageable with said shoulder on said sleeve in response to horizontal repositioning of said plate.
- each of said peripheral portions project beneath said lifting spring for engaging said shoulder on said strip per sleeve.
- a punching device according to claim 1 in which the upper surface of said retainer plate is coplanar with the upper surface of said upper arm.
- a punching device including a shoulder screw securing said plate to said upper arm,
- said shoulder screw having a central non-threaded bearing portion having a close fit with said retainer plate to position it accurately.
- a punching device in which said plate is circular at each said peripheral portion, said plate having a further peripheral portion movable to a substantially tangential relation to said bore where it has clearance with respect to said stripper sleeve.
- a punching device which includes detent means acting between said upper arm and said retainer plate for accurately locating each of said peripheral portions of said retainer plate.
- a punching device in which said retainer plate is rotatably mounted for movement about a vertical axis, said detent means including a plurality of detent elements disposed a uniform distance from said axis.
- a punching device according to claim 7 in which said detent elements are ball-receptive recesses on said retainer plate.
- a punching device according to claim 1 in which there are three of said retainer plate shoulders.
- a punching device in which said retainer plate has three vertical clearance walls arranged as three sides of a square, two of said clearance walls extending to two of said shoulders on said retainer plate, and the third extending for the thickness of said plate.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Punching Or Piercing (AREA)
Abstract
Description
Claims (10)
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US550759A US3926082A (en) | 1975-02-14 | 1975-02-14 | Punching device having adjustable guide retainer |
CA233,630A CA1025349A (en) | 1975-02-14 | 1975-08-18 | Punching device having adjustable guide retainer |
GB34436/75A GB1500588A (en) | 1975-02-14 | 1975-08-19 | Punching devices |
IT26508/75A IT1041987B (en) | 1975-02-14 | 1975-08-22 | PUNCHING DEVICE WITH A HOLDER ELEMENT FOR ADJUSTABLE GUIDE |
DE2538605A DE2538605C2 (en) | 1975-02-14 | 1975-08-29 | Punching device |
DK391775AA DK140749B (en) | 1975-02-14 | 1975-09-01 | Punching mechanism. |
FR7528685A FR2300661A1 (en) | 1975-02-14 | 1975-09-18 | PUNCHING TOOLS WITH ADJUSTABLE PROTECTION DEVICE |
JP14458275A JPS5345032B2 (en) | 1975-02-14 | 1975-12-02 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US550759A US3926082A (en) | 1975-02-14 | 1975-02-14 | Punching device having adjustable guide retainer |
Publications (1)
Publication Number | Publication Date |
---|---|
US3926082A true US3926082A (en) | 1975-12-16 |
Family
ID=24198473
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US550759A Expired - Lifetime US3926082A (en) | 1975-02-14 | 1975-02-14 | Punching device having adjustable guide retainer |
Country Status (8)
Country | Link |
---|---|
US (1) | US3926082A (en) |
JP (1) | JPS5345032B2 (en) |
CA (1) | CA1025349A (en) |
DE (1) | DE2538605C2 (en) |
DK (1) | DK140749B (en) |
FR (1) | FR2300661A1 (en) |
GB (1) | GB1500588A (en) |
IT (1) | IT1041987B (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4012975A (en) * | 1975-07-31 | 1977-03-22 | Lalone Barry Grant | High speed punching apparatus and tool therefor |
US5020407A (en) * | 1988-05-17 | 1991-06-04 | Brinlee Charles P | Adjustable form tool head |
US5131303A (en) * | 1991-08-12 | 1992-07-21 | Wilson Tool International | Punch assembly |
WO1994007663A1 (en) * | 1992-10-07 | 1994-04-14 | Wilson Tool International, Inc. | Adjustable length punch set assembly |
US5419225A (en) * | 1993-02-03 | 1995-05-30 | Amada Metrecs Company, Limited | Punching die |
US5555834A (en) * | 1992-04-17 | 1996-09-17 | Bonner; Kevin B. | Double-needle chuck assembly with movable knife for sewing machine |
US5839341A (en) * | 1996-04-12 | 1998-11-24 | Mate Precision Tooling | Punch unit |
US5884546A (en) * | 1997-02-21 | 1999-03-23 | Mate Precision Tooling Inc. | Punch unit |
US6755110B2 (en) | 2001-06-19 | 2004-06-29 | Wilson Tool International, Inc. | Adjustable length punch assembly |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5989623U (en) * | 1982-12-06 | 1984-06-18 | 積水ハウス株式会社 | hole punching mold |
DE3339503C2 (en) * | 1983-10-31 | 1985-09-05 | Dietz NC-Werkzeugsysteme, 8374 Viechtach | Punching machine and tool kit for punching machines |
JPS60136824U (en) * | 1984-02-17 | 1985-09-11 | 高橋 重臣 | stripper structure |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2708970A (en) * | 1951-01-26 | 1955-05-24 | Wales Strippit Corp | Punch holder with controllable lifting spring |
US2953051A (en) * | 1956-09-20 | 1960-09-20 | George F Wales | Perforating implement with stripper sleeve retaining means |
US3368436A (en) * | 1964-10-30 | 1968-02-13 | Unipunch Products | Apparatus for perforating sheet material |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1191802A (en) * | 1968-04-11 | 1970-05-13 | Tangyes Ltd | Improvements in Jacks |
-
1975
- 1975-02-14 US US550759A patent/US3926082A/en not_active Expired - Lifetime
- 1975-08-18 CA CA233,630A patent/CA1025349A/en not_active Expired
- 1975-08-19 GB GB34436/75A patent/GB1500588A/en not_active Expired
- 1975-08-22 IT IT26508/75A patent/IT1041987B/en active
- 1975-08-29 DE DE2538605A patent/DE2538605C2/en not_active Expired
- 1975-09-01 DK DK391775AA patent/DK140749B/en not_active IP Right Cessation
- 1975-09-18 FR FR7528685A patent/FR2300661A1/en active Granted
- 1975-12-02 JP JP14458275A patent/JPS5345032B2/ja not_active Expired
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2708970A (en) * | 1951-01-26 | 1955-05-24 | Wales Strippit Corp | Punch holder with controllable lifting spring |
US2953051A (en) * | 1956-09-20 | 1960-09-20 | George F Wales | Perforating implement with stripper sleeve retaining means |
US3368436A (en) * | 1964-10-30 | 1968-02-13 | Unipunch Products | Apparatus for perforating sheet material |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4012975A (en) * | 1975-07-31 | 1977-03-22 | Lalone Barry Grant | High speed punching apparatus and tool therefor |
US5020407A (en) * | 1988-05-17 | 1991-06-04 | Brinlee Charles P | Adjustable form tool head |
US5131303A (en) * | 1991-08-12 | 1992-07-21 | Wilson Tool International | Punch assembly |
US5555834A (en) * | 1992-04-17 | 1996-09-17 | Bonner; Kevin B. | Double-needle chuck assembly with movable knife for sewing machine |
WO1994007663A1 (en) * | 1992-10-07 | 1994-04-14 | Wilson Tool International, Inc. | Adjustable length punch set assembly |
US5329835A (en) * | 1992-10-07 | 1994-07-19 | Wilson Tool International, Inc. | Adjustable length punch set assembly |
US5419225A (en) * | 1993-02-03 | 1995-05-30 | Amada Metrecs Company, Limited | Punching die |
US5839341A (en) * | 1996-04-12 | 1998-11-24 | Mate Precision Tooling | Punch unit |
US5884546A (en) * | 1997-02-21 | 1999-03-23 | Mate Precision Tooling Inc. | Punch unit |
US6755110B2 (en) | 2001-06-19 | 2004-06-29 | Wilson Tool International, Inc. | Adjustable length punch assembly |
US20040206223A1 (en) * | 2001-06-19 | 2004-10-21 | Wilson Tool International, Inc. | Adjustable length punch assembly |
US20060086230A1 (en) * | 2001-06-19 | 2006-04-27 | Wilson Tool International, Inc. | Adjustable length punch assembly |
US7168356B2 (en) | 2001-06-19 | 2007-01-30 | Wilson Tool International Inc. | Adjustable length punch assembly |
Also Published As
Publication number | Publication date |
---|---|
CA1025349A (en) | 1978-01-31 |
DK140749C (en) | 1980-04-21 |
DE2538605C2 (en) | 1985-11-14 |
FR2300661A1 (en) | 1976-09-10 |
GB1500588A (en) | 1978-02-08 |
DK391775A (en) | 1976-08-15 |
JPS5345032B2 (en) | 1978-12-04 |
DK140749B (en) | 1979-11-12 |
FR2300661B3 (en) | 1978-05-05 |
JPS5194193A (en) | 1976-08-18 |
IT1041987B (en) | 1980-01-10 |
DE2538605A1 (en) | 1976-08-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: STRIPPIT/DI-ACRO - HOUDAILLE, INC. 12975 CLARENCE Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:HOUDILLE INDUSTRIES, INC., A CORP OF DE;REEL/FRAME:004381/0716 Effective date: 19850121 |
|
AS | Assignment |
Owner name: STRIPPIT-HOUDAILLE, INC., 12975 CLARENCE CENTER RO Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:STRIPPIT/DI-ACRO-HOUDAILLE, INC., A DE. CORP.;REEL/FRAME:004660/0022 Effective date: 19861208 Owner name: STRIPPIT-HOUDAILLE, INC., A DE. CORP.,NEW YORK Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:STRIPPIT/DI-ACRO-HOUDAILLE, INC., A DE. CORP.;REEL/FRAME:004660/0022 Effective date: 19861208 |
|
AS | Assignment |
Owner name: STRIPPIT, INC. Free format text: CHANGE OF NAME;ASSIGNOR:STRIPPIT-HOUDAILLE, INC.;REEL/FRAME:006243/0001 Effective date: 19880323 |
|
AS | Assignment |
Owner name: LASALLE NATIONAL BANK, ILLINOIS Free format text: SECURITY AGREEMENT;ASSIGNOR:STRIPPIT, INC.;REEL/FRAME:009445/0042 Effective date: 19980825 |
|
AS | Assignment |
Owner name: LASALLE BUSINESS CREDIT, INC., ILLINOIS Free format text: CHANGE OF SECURED PARTY;ASSIGNOR:LASALLE BANK NATIONAL ASSOCIATION (FORMERLY KNOWN AS LASALLE NATIONAL BANK);REEL/FRAME:012559/0012 Effective date: 20011212 |