US3822603A - Slide driving linkage for metal forming press - Google Patents
Slide driving linkage for metal forming press Download PDFInfo
- Publication number
- US3822603A US3822603A US00290333A US29033372A US3822603A US 3822603 A US3822603 A US 3822603A US 00290333 A US00290333 A US 00290333A US 29033372 A US29033372 A US 29033372A US 3822603 A US3822603 A US 3822603A
- Authority
- US
- United States
- Prior art keywords
- slide
- crank
- reciprocating
- rod
- joint
- 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
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
- B30B1/26—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by cams, eccentrics, or cranks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/25—Movable or adjustable work or tool supports
- B23Q1/44—Movable or adjustable work or tool supports using particular mechanisms
- B23Q1/50—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism
- B23Q1/54—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism two rotating pairs only
- B23Q1/5468—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism two rotating pairs only a single rotating pair followed parallelly by a single rotating pair
- B23Q1/5481—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism two rotating pairs only a single rotating pair followed parallelly by a single rotating pair followed parallelly by a single rotating pair
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
- B30B1/10—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by toggle mechanism
- B30B1/14—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by toggle mechanism operated by cams, eccentrics, or cranks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
- B30B1/26—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by cams, eccentrics, or cranks
- B30B1/268—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by cams, eccentrics, or cranks using a toggle connection between driveshaft and press ram
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H21/00—Gearings comprising primarily only links or levers, with or without slides
- F16H21/10—Gearings comprising primarily only links or levers, with or without slides all movement being in, or parallel to, a single plane
- F16H21/16—Gearings comprising primarily only links or levers, with or without slides all movement being in, or parallel to, a single plane for interconverting rotary motion and reciprocating motion
- F16H21/18—Crank gearings; Eccentric gearings
- F16H21/22—Crank gearings; Eccentric gearings with one connecting-rod and one guided slide to each crank or eccentric
- F16H21/26—Crank gearings; Eccentric gearings with one connecting-rod and one guided slide to each crank or eccentric with toggle action
-
- 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
- Y10T74/00—Machine element or mechanism
- Y10T74/18—Mechanical movements
- Y10T74/18056—Rotary to or from reciprocating or oscillating
- Y10T74/1816—Crank, lever, toggle, and slide
Definitions
- the invention herein utilizes a novel form of linkage arrangement whereby the main link between the crank and the slide is divided into two'sections.
- the upper end of the upper link is eccentrically mounted on a driving gear, and the lower end of the lower link is connected to the slide.
- the two links themselves are then pivotally connected together and additional linkage means are provided whereby the connecting point between the two sections of the main link is caused to move laterally during its upward and downward movement, thereby imparting a rapid downward movement of the slide to the point where it begins the draw.
- the linkage is designed to slow the speed of the slide during the draw, and thereafter cause the slide to return to its uppermost position at a relatively rapid rate of speed.
- the present invention is designed as an improvement and simplification of linkages heretofore devised for th'epurpose of accomplishing similar purposes, i. e., to increase the efficiency of a metal drawing press by enabling the slide to move at greater speed before and after the drawing operation has taken place. It is therefore one of the primary objects of the present invention to provide a relatively simple and economical linkage arrangement for producing a variable speed linear movement in a slide of a metal forming press whereby the slide carrying the upper die will approach the metal to be formed at a relatively rapid rate, will then decelerate during the draw, and thereafter return to its uppermost position again at a relatively rapid rate.
- a further object of the invention is to provide a novel linkage arrangement for driving the slide of a metal forming press, wherein the main link connecting a crank with the slide is formed in two parts pivotally connected together to form a joint which is capable of being moved laterally, in addition to being moved upwardly, thereby to increase the speed of movement of the slide during this period.
- a further and more specific object of the invention is to provide a slide driving linkage arrangement wherein the upper part of a main dual link is connected to a crank which, in turn, is connected by a link to a bell crank lever.
- the pin connecting the upper and lower sections of the main link also has a further link connected to the other end of the bell crank lever, whereby the crank movement will oscillate the bell crank lever to not only raise and lower the slide, but at the same time to impart a lateral movement to the pivotal connection between the two part link.
- FIG. 1 is a front elevational schematic view showing the linkage arrangement of thepi'esent invention.
- FIG. 2 is a motion curve illustrating a comparison'between the movement of the slide in the present invention, and the movement of the slide which takes place by the use of a conventional and well known linkage arrangement.
- a main driving gear indicated by the numeral 1.
- This driving gear is provided with an eccentrically mounted pin 2 connected to the slide 3 by means of a connecting rod or link 4.
- This main connecting rod or link 4 is divided into two parts.
- the upper part 40 is connected at its upper end to the eccentric pin 2 and the lower endof the other section 4b is connected to the slide 3.
- the upper and lower links 4a and 4b are connected together by means of the pin 5.
- the structure is such that one end of a'link 6 is connected to the eccentric pin 2 and the other end thereof is connected to one arm of a bell crank lever, generally indicated by the numeral 7.
- the other arm 7b of the bell crank is connected to one end of a link 8.
- the other end of the link 8 is connected to the pin 5.
- the link 6 is connected to the arm 7a of the bell crank 7 by means of a pin 9.
- the outer end of link 8 is connected by means of the pin 10 to the other arm 7b of the bell crank.
- the bell crank itselfis pivotally mounted by means of a pin 11 on a rigid portion of the frame 12.
- the center of the main driving gear I is indicated by the letter O.
- the center of the eccentric pin 2 is indicated by the letter A.
- the letters B, C, and D indicate respectively the centers of the connecting pins 5, 9, and
- the circular dotted line indicated at a shows the path of movement of the center of the eccentric pin 2 as it moves in a counterclockwise direction.
- the dot dash line b illustrates the path of movement of the center of the connecting pin 5 as it moves in a path which is a combination of vertical and lateral movement.
- the dotted line c and thedotted line d illustrate the arcuate paths of the centers C and D respectively of the connecting pins 9 and 10 during operation of the press.
- the slide 3 requires more time in its downward stroke and performs a variable speed movement, such as descending more slowly near the lower dead center point and ascending rapidly in the upward stroke after completion of the forming operation.
- the motion curve illustrating this movement of the cycle of the slide 3 is illustrated by the solid line curve indicated at M of FIG. 2. This may be compared with the dotted line curve N which illustrates the motion of the slide of the normal crank press when the working time is equal in the up'and down movement of the slide.
- the slide driving linkage arrangement is constructed so that the connecting rod 4, between the eccentric pin 2 and the slide 3 is divided into two separate linkages, 4a and 4b, connected together with a pin 5. A lateral movement is afforded to that connecting point through the link 6 connected to the eccentric pin and to the arm 7a of the bell crank lever 7, and through the link 8 connected to the other arm of the bell crank and to the pin 5.
- the slide is caused to perform the working of the metal at slower speed, and is caused to return upwardly at a greatly increased speed.
- the time for one cycle of the press in the conventional and usual crank arrangement is indicated by T
- the time for one cycle of the press when the linkage of the present invention is used is indicated in FIG. 2 by T
- T the time required for one cycle of the slide may be reduced from T to T and still maintain the same actual drawing or working time of the metal. It follows, therefore, that the rotating speed of the driving crank may be increased for obtaining the same speed of draw and thereby increase the efficiency and production of the press without in any way imparing the quality of the draw.
- a driving linkage for reciprocating the slide of a mechanical press having a frame comprising a. a crank, b. a rod connecting said crank to the slide, whereby rotation of said crank will reciprocate the slide, said rod being divided into two parts, wherein l. the upper part of said rod is connected to said crank,
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Press Drives And Press Lines (AREA)
Abstract
Description
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00290333A US3822603A (en) | 1972-09-19 | 1972-09-19 | Slide driving linkage for metal forming press |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00290333A US3822603A (en) | 1972-09-19 | 1972-09-19 | Slide driving linkage for metal forming press |
Publications (1)
Publication Number | Publication Date |
---|---|
US3822603A true US3822603A (en) | 1974-07-09 |
Family
ID=23115525
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00290333A Expired - Lifetime US3822603A (en) | 1972-09-19 | 1972-09-19 | Slide driving linkage for metal forming press |
Country Status (1)
Country | Link |
---|---|
US (1) | US3822603A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4208924A (en) * | 1977-11-17 | 1980-06-24 | Anton Brunner | Drive for operating a punching tool |
GB2299962A (en) * | 1995-04-21 | 1996-10-23 | Rhodes Joseph Ltd | Press for working material |
US20060163237A1 (en) * | 1997-08-26 | 2006-07-27 | Richard Chang | Hand-held electric heat sealer |
CN105172181A (en) * | 2015-09-25 | 2015-12-23 | 嵊州市康力机械有限公司 | Punch structure with multiple connection rods |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US606358A (en) * | 1898-06-28 | Valve-reversing gear | ||
US1366360A (en) * | 1918-10-21 | 1921-01-25 | Nat Machinery Co | Die-slide-operating mechanism |
DE338075C (en) * | 1920-06-25 | 1921-06-13 | Maschinebau Anstalt Humboldt | Drive for shovel cookers, shaker screens, conveyor troughs, etc. like |
DE411041C (en) * | 1923-01-25 | 1925-03-14 | Maschb Anstalt Humboldt | Drive for shovel cookers, shaker screens, conveyor troughs, etc. like |
US2688296A (en) * | 1950-07-22 | 1954-09-07 | Danly Mach Specialties Inc | Triple action reciprocating crown press |
US3174347A (en) * | 1961-04-20 | 1965-03-23 | May Pressenbau Ltd | Toggle lever system |
US3693463A (en) * | 1970-08-03 | 1972-09-26 | Wilbur G Garman | Linkage for a reciprocating engine crankshaft |
-
1972
- 1972-09-19 US US00290333A patent/US3822603A/en not_active Expired - Lifetime
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US606358A (en) * | 1898-06-28 | Valve-reversing gear | ||
US1366360A (en) * | 1918-10-21 | 1921-01-25 | Nat Machinery Co | Die-slide-operating mechanism |
DE338075C (en) * | 1920-06-25 | 1921-06-13 | Maschinebau Anstalt Humboldt | Drive for shovel cookers, shaker screens, conveyor troughs, etc. like |
DE411041C (en) * | 1923-01-25 | 1925-03-14 | Maschb Anstalt Humboldt | Drive for shovel cookers, shaker screens, conveyor troughs, etc. like |
US2688296A (en) * | 1950-07-22 | 1954-09-07 | Danly Mach Specialties Inc | Triple action reciprocating crown press |
US3174347A (en) * | 1961-04-20 | 1965-03-23 | May Pressenbau Ltd | Toggle lever system |
US3693463A (en) * | 1970-08-03 | 1972-09-26 | Wilbur G Garman | Linkage for a reciprocating engine crankshaft |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4208924A (en) * | 1977-11-17 | 1980-06-24 | Anton Brunner | Drive for operating a punching tool |
GB2299962A (en) * | 1995-04-21 | 1996-10-23 | Rhodes Joseph Ltd | Press for working material |
US20060163237A1 (en) * | 1997-08-26 | 2006-07-27 | Richard Chang | Hand-held electric heat sealer |
CN105172181A (en) * | 2015-09-25 | 2015-12-23 | 嵊州市康力机械有限公司 | Punch structure with multiple connection rods |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: CLEARING INC., CHICAGO, IL 60638 A DE CORP Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:U.S. INDUSTRIES INC.;REEL/FRAME:004413/0976 Effective date: 19850603 |
|
AS | Assignment |
Owner name: HITACHI ZOSEN CLEARING, INC., A DE CORP Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:USI PRESS COMPANY, A DE CORP;REEL/FRAME:004647/0468 Effective date: 19861121 |
|
AS | Assignment |
Owner name: HITACHI ZOSEN CLEARING, INC.), 6499 WEST 65TH STRE Free format text: NUNC PRO TUNC ASSIGNMENT;ASSIGNOR:CLEARING, INC. (NOW, BY CHANGE OF NAME, U.S.I. PRESS COMPANY);REEL/FRAME:004835/0316 Effective date: 19880125 Owner name: HITACHI ZOSEN CLEARING, INC.), A CORP. OF DE., IL Free format text: NUNC PRO TUNC ASSIGNMENT;ASSIGNOR:CLEARING, INC. (NOW, BY CHANGE OF NAME, U.S.I. PRESS COMPANY);REEL/FRAME:004835/0316 Effective date: 19880125 |