US3049029A - Presses - Google Patents

Presses Download PDF

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Publication number
US3049029A
US3049029A US759878A US75987858A US3049029A US 3049029 A US3049029 A US 3049029A US 759878 A US759878 A US 759878A US 75987858 A US75987858 A US 75987858A US 3049029 A US3049029 A US 3049029A
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US
United States
Prior art keywords
press
shaft
plate
ring
pulley
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
US759878A
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English (en)
Inventor
Schaming Guillaume
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.)
SCHESTAL SA
Original Assignee
SCHESTAL SA
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 SCHESTAL SA filed Critical SCHESTAL SA
Application granted granted Critical
Publication of US3049029A publication Critical patent/US3049029A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/0029—Details of, or accessories for, presses; Auxiliary measures in connection with pressing means for adjusting the space between the press slide and the press table, i.e. the shut height
    • B30B15/0035—Details of, or accessories for, presses; Auxiliary measures in connection with pressing means for adjusting the space between the press slide and the press table, i.e. the shut height using an adjustable connection between the press drive means and the press slide
    • 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
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/12—Clutches specially adapted for presses
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D25/00—Fluid-actuated clutches
    • F16D25/04—Fluid-actuated clutches in which the fluid actuates an elastic clutching, i.e. elastic actuating member, e.g. a diaphragm or a pneumatic tube
    • F16D25/042—Fluid-actuated clutches in which the fluid actuates an elastic clutching, i.e. elastic actuating member, e.g. a diaphragm or a pneumatic tube the elastic actuating member rotating with the clutch
    • F16D25/044—Fluid-actuated clutches in which the fluid actuates an elastic clutching, i.e. elastic actuating member, e.g. a diaphragm or a pneumatic tube the elastic actuating member rotating with the clutch and causing purely axial movement
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D27/00—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor
    • F16D27/02—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor with electromagnets incorporated in the clutch, i.e. with collecting rings
    • F16D27/04—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor with electromagnets incorporated in the clutch, i.e. with collecting rings with axially-movable friction surfaces
    • F16D27/08—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor with electromagnets incorporated in the clutch, i.e. with collecting rings with axially-movable friction surfaces with friction surfaces arranged externally to the flux
    • 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
    • Y10T74/18208—Crank, pitman, and slide

Definitions

  • the present invention refers to mechanically operated presses comprising a slide-block actuated by a connecting rod driven by an eccentric or crank shaft.
  • the invention comprises improvements in such presses, especially for improving their operation, by rendering it more certain and more flexible.
  • the eccentric or crank shaft is secured to a plate on which there are rotatably mounted planet pinions engaging with a stationary outer gear ring and with a central pinion secured to the driving member of the press.
  • a driving member rotating at a relatively high speed
  • Such an arrangement permits of driving the press by means of an electric motor, and reducing its speed simply by a normal belt-pulley transmission, without having to use mechanical reduction gearing of the usual type, with a small pinion keyed on the motor shaft and a large-diameter gear wheel keyed on the driving shaft of the press.
  • a balanced drive is obtained, exerted at a plurality of points, instead of at one single point as in the usual arrangements.
  • connection between the driving member of the press and the source of power is effected by means of a friction clutch controlled mechanically, electromagnetically or by pressure fluid, which permits a slipping action in the case of an excessive force exerted upon the press.
  • the invention also comprises an arrangement whereby the pin or gudgeon coupling the sliding block of the press with the connecting rod is mounted eccentrically at its two ends, so that the eccentricity can be varied and consequently the position of the slide block in relation to the lower table can be adjusted for the working stroke of the tools operated by the press.
  • This adjustment can be effected micrometrically by means of a worm actuated from the exterior and in engagement with a toothed ring provided on the eccentric pin or gudgeon coupling the connecting rod to the slide block.
  • slide-ways For the guidance of the slide block, detachable slideways of considerable length are used, which increase the bearing surfaces of the guides. These slide-ways may be removable, as by mounting them in dovetailed grooves on the sides of the slide block.
  • the invention enables the eccentric or crank shaft to be made in one piece, the connecting rod being also made in one piece or provided with a divided bearing cap at one end.
  • FIG. 1 is an elevation of the press
  • FIG. 2 is an enlarged detail of the device for driving the press by means of an electro-magnetically controlled clutch
  • FIG. 3 is a section along the line III-III in FIG. 1;
  • FIG. 4 is an enlarged detail of a device for adjusting the position of the slide block in relation to the table of the press
  • FIG. 5 is an enlarged detail in section of another embodiment of the device for driving the press by means of a clutch controlled by pressure fluid;
  • FIG. 6 is a section showing the arrangement for the supply of fluid in FIG. 5;
  • FIGS. 7 and 8 are enlarged details respectively in longitudinal section and in section along the line VIII--VIII of FIG. 7, showing means for varying the stroke of the extractor;
  • FIGS. 9 to 11 are part sectional details of a brake for the press.
  • the press comprises a frame 1, a slide block 2, a shaft 3 having an eccentric or crank-throw 4, and a connecting rod 5 mounted on the eccentric, the other end of which is attached to a pin or gudgeon 6 for connection with the slide block 2. It also comprises a table 7 provided with an extractor device 8'.
  • the press is driven, for example by an electric motor (not shown) by means of V-belts passing over a grooved pulley 9, the shaft 3 being driven through a clutch, which may be controlled mechanically, electro-magnetically or by fluid under pressure.
  • the press is driven through a clutch with electro-magnetic control.
  • the pulley 9, concentric with the shaft 3, is secured to a plate .10 inside which there is provided a magnet winding 11. Beside this plate there is mounted a ring 12, connected thereto by means of rods 13 slidable against springs 14, in such a way that, while rotating with the plate 10, the ring 12 can move axially in relation thereto.
  • the plate 10 and the ring 12 are made of magnetic material, forming an electro-magnet energized by the winding 11.
  • a disc 15 fitted with linings 16 of a material having a high coefficient of friction In the air-gap of this electro-magnet there is provided a disc 15 fitted with linings 16 of a material having a high coefficient of friction. This disc is connected by a spider or plate 19 to a pinion 17 rotatably mounted on the shaft 3.
  • the supply of electric current to the winding 11 is effected by means of brushes 18a contacting with conductor rings 18 carried by the pulley 9 and connected to the winding 11.
  • This pinion 17 engages with planet pinions 20, for example four in number and spaced at apart. These pinions rotate on spindles 21 carried by a plate 22 keyed to the shaft 3, and they also engage with a stationary outer gear ring 23 secured to the frame 1 of the press.
  • the shaft 3 is driven for operation of the crank 4 through the intermediary of the planet pinions 21, the gear-ratio between said pinions and the central pinion 17 being selected in such a way that a suitable reduction of speed is obtained.
  • the press is driven through a clutch with pressure-fluid control.
  • the pulley 9 is here shown secured to a plate 30 concentric with the shaft 3 and on which there is fixed an annular plate 31, also concentric with the shaft.
  • the means for driving the press comprises a toothed pinion 17 rotatably mounted on the shaft 3, and planet pinions 20 rotatable on spindle 21 carried by a plate 22 secured to the shaft 3, these planet pinions engaging with an outer toothed ring 23 secured to the frame of the press.
  • annular plate 31 there is mounted in fluidtight manner an elastic diaphragm 32, facing which there is provided an annular plate 33 adapted to press against a ring 34 which is secured to rods 35 slidable in the plate 30 against the action of springs 36.
  • pressure fluid from a distributor working in timed relation with the press is delivered through a conduit 41 opening into a rotary joint member 42 in axial relation to the shaft 3 of the press.
  • This joint 42 is connected by conduits 43, 44, leading through radial grooves 45 provided on the plate 31 to a circular channel 46.
  • the conduits 43, 44 may be arranged in threes, disposed at 120 apart, in order to obtain a good distribution of the pressure fluid and properly balanced action.
  • the pin or gudgeon 6, by which the connecting rod is attached to the slide block 2 of the press, is preferably made eccentric at its two ends. Variation of this eccentricity is effected by means of a worm 25 mounted on the slide block and capable of being controlled from the exterior by means of a square end 26, as seen in FIG. 4. This tangential worm 25 engages with a toothed ring 27 provided on the pin 6. By turning the pin 6, the eccentricity can be varied, whereby the limiting position of the slide block in relation to the table 7 can be adjusted. Means may be provided for locking the pin in the position which has been adjusted in this way.
  • slide-ways 29 In order to improve the guiding of the slide block 2, there may be attached on the uprights 23 parallel slideways 29 of considerable length, these slide-ways being preferably mounted on dovetails and secured by any appropriate means.
  • crank shaft 3 is in one single piece with its eccentric or crank throw 4.
  • connecting rod 5 which may however be fitted with a divided bearing at one end.
  • the press can be provided with means for extraction of the work-pieces, having a stroke continuously variable by shifting the fulcrum of the actuating lever, such an arrangement being represented in FIGS. 7 and 8.
  • the extractor 8 which may be multiple or may be arranged as a movable pressure table, is operated by means of links 50 articulated at 50a on a lever 51.
  • a control member 59 acts through a joint 52 and an articulation 53 upon one end of this lever, the other end of which is mounted on a fulcrum 54 which is movable in relation to the frame of the press.
  • the lever 51 formed of two side-pieces having slotted engagement with a die or fulcrum 54 adjustable along slideways 55, the die forming a nut for a screw 56 which can be operated from the exterior.
  • the press may be provided with a braking device mounted at the end of the crank shaft, and adapted for actuation by any appropriate means, for example electropneumatic.
  • FIGS. 9 to 11 there are represented three radial sections, taken at different angular positions, of a disc braking device mounted on the crank shaft 3 on the side of the press opposite to that Where the driving pulley is mounted.
  • a sleeve 60 On the shaft 3, there is keyed a sleeve 60, on which there is fixed by screws 61 a disc 62. Furthermore, a ring 64 is mounted by screws 63 on the press frame 1.
  • a chamber 85 inside the ring 64 there are provided two cheek plates 74, 75, concentric with the axis of the shaft 3, and movable in relation to one another.
  • These two cheek plates are mounted on a plate 76 fixed on the ring 64, being assembled thereto by means of rings 77, 78 secured to the plate 76, and on which the cheek plates 74, can slide.
  • the part 76a of the plate 76 comprises a channel 79 in communication through a joint member 80 and a pipe 81 with a source of pressure fluid.
  • the channel 79 opens out through ports 82 into the space included between the cheek plates 74, 75.
  • the check plate 74 contacts with gudgeons 83 secured to the plate 65.
  • the cheek plate 75 is secured to gudgeons 84 fast with the plates 66, as shown in FIG. 11.
  • the press may be provided with cams for ensuring the control of its various operations, and with the usual accessories.
  • a mechanically operated press comprising, in combination, a press frame; a slide reciprocable in said press frame; a drive shaft turnably mounted in said press frame; means operatively connected to said shaft and said slide for reciprocating said slide upon turning of said shaft; a combined pulley and flywheel member turnably mounted on said shaft; a sun gear turnably mounted on said shaft; a plurality of planet gears uniformly distributed about said sun gear and in meshing engagement therewith; support means for supporting said planet gears and being fixed to said shaft for rotation therewith; an outer gear ring surrounding said planet gears in meshing engagement with the latter, said outer gear ring being fixedly carried by said press frame; and clutch means interposed between said combined pulley and flywheel member and said sun gear for connecting and disconnecting said member to and from said sun gear.
  • a mechanically operated press comprising, in combination, a press frame; a slide reciprooable in said press frame; a drive shaft turnably mounted in said press frame; means operatively connected to said shaft and said slide for reciprocating said slide upon turning of said shaft; a combined pulley and flywheel member turnably mounted on said shaft, said combined pulley and flywheel member having an outer rim portion and a flange portion extending transverse to said outer rim portion from one side of the latter, the inner surfaces of said portions defining a substantially cylindrical hollow space in said member; a sun gear turnably mounted on said shaft; a plurality of planet gears uniformly distributed about said sun gear and in meshing engagement therewith; support means for supporting said planet gears and being fixed to said shaft for rotation therewith; an outer gear ring surrounding said planet gears in meshing engagement with the latter, said outer gear ring being fixedly carried by said press frame; and clutch means interposed between said combined pulley and flywheel member and said sun gear for connecting and disconnecting said member to and from said sun gear
  • a stationary frame for use in a machine such as a mechanically operated press or the like, in combination, a stationary frame; a rotary drive shaft carried by said frame; a sun gear coaxially surrounding and freely turnable with respect to said shaft; an outer ring gear having inner teeth directed toward said sun gear, said ring gear coaxially surrounding and being spaced from said sun gear and said ring gear being fixedly carried by said stationary frame so that said ring gear also is stationary; a plurality of planetary gears located between and meshing with said sun gear and ring gear; support means supporting each of said planetary gears for free rotary movement about its axis, said support means being fixed to said drive shaft so that movement of the planetary gears about the axis of said drive shaft transmits a drive thereto; a rotary driving pulley coaxial with said drive shaft and located adjacent said gears; and friction clutch means operatively connected to said pulley and sun gear for transmitting a drive from said pulley to said sun gear when said friction clutch means is engaged, whereby said
  • said frame having a side surface beyond which said drive shaft extends and said ring gear being fixed to and located adjacent said side surface of said frame, said support means being located between said planetary gears and said side surface of said frame and said clutch means being located adjacent to said sun gear and planetary gears at the side of the latter opposite from said support means.
  • said pulley also acting as a flywheel and being freely turnable on a free end portion of said shaft at the part thereof extending beyond said side surface of said frame, said pulley being hollow, having a free annular edge portion located adjacent said side surface of said frame and all of said gearing, said support means, and said clutch means being housed within said hollow pulley.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Press Drives And Press Lines (AREA)
US759878A 1957-09-13 1958-09-09 Presses Expired - Lifetime US3049029A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1182756T 1957-09-13

Publications (1)

Publication Number Publication Date
US3049029A true US3049029A (en) 1962-08-14

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ID=9662662

Family Applications (1)

Application Number Title Priority Date Filing Date
US759878A Expired - Lifetime US3049029A (en) 1957-09-13 1958-09-09 Presses

Country Status (5)

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US (1) US3049029A (fr)
BE (1) BE570085A (fr)
CH (1) CH351837A (fr)
FR (1) FR1182756A (fr)
GB (1) GB837190A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3166953A (en) * 1962-08-03 1965-01-26 Henry W Lange Power transmission mechanism
US4785732A (en) * 1986-06-06 1988-11-22 L. Schuler Gmbh Push rod stroke adjustment device for a press
US6070523A (en) * 1998-11-18 2000-06-06 The Minster Machine Company Press dynamic balancer guide system

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US311255A (en) * 1885-01-27 pedersen
US1675669A (en) * 1927-10-10 1928-07-03 John L Snyder Press
US2151890A (en) * 1936-11-18 1939-03-28 Bobst Henri Press for cutting cardboard
US2280849A (en) * 1938-06-07 1942-04-28 Hydraulic Dev Corp Inc Press with ejector ram operated without auxiliary pressure source
US2523393A (en) * 1948-01-27 1950-09-26 Rhodes Charles Joseph Slide for power presses
US2553521A (en) * 1947-09-30 1951-05-15 Warren City Mfg Company Drive mechanism
US2577641A (en) * 1950-05-05 1951-12-04 Minster Machine Co Multiple drive press with multiple clutch
US2608253A (en) * 1947-11-24 1952-08-26 Diamond Machine Tool Company Machine tool press
US2755147A (en) * 1952-08-13 1956-07-17 Ohio Commw Eng Co Press construction
US2781879A (en) * 1953-12-17 1957-02-19 Warner Swasey Co Machine tool transmission and control therefor
US2818798A (en) * 1953-12-07 1958-01-07 Hordern Mason And Edwards Ltd Power presses

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US311255A (en) * 1885-01-27 pedersen
US1675669A (en) * 1927-10-10 1928-07-03 John L Snyder Press
US2151890A (en) * 1936-11-18 1939-03-28 Bobst Henri Press for cutting cardboard
US2280849A (en) * 1938-06-07 1942-04-28 Hydraulic Dev Corp Inc Press with ejector ram operated without auxiliary pressure source
US2553521A (en) * 1947-09-30 1951-05-15 Warren City Mfg Company Drive mechanism
US2608253A (en) * 1947-11-24 1952-08-26 Diamond Machine Tool Company Machine tool press
US2523393A (en) * 1948-01-27 1950-09-26 Rhodes Charles Joseph Slide for power presses
US2577641A (en) * 1950-05-05 1951-12-04 Minster Machine Co Multiple drive press with multiple clutch
US2755147A (en) * 1952-08-13 1956-07-17 Ohio Commw Eng Co Press construction
US2818798A (en) * 1953-12-07 1958-01-07 Hordern Mason And Edwards Ltd Power presses
US2781879A (en) * 1953-12-17 1957-02-19 Warner Swasey Co Machine tool transmission and control therefor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3166953A (en) * 1962-08-03 1965-01-26 Henry W Lange Power transmission mechanism
US4785732A (en) * 1986-06-06 1988-11-22 L. Schuler Gmbh Push rod stroke adjustment device for a press
US6070523A (en) * 1998-11-18 2000-06-06 The Minster Machine Company Press dynamic balancer guide system

Also Published As

Publication number Publication date
CH351837A (fr) 1961-01-31
FR1182756A (fr) 1959-06-29
BE570085A (fr)
GB837190A (en) 1960-06-09

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