US3908511A - Device for feeding material into work performing machines - Google Patents

Device for feeding material into work performing machines Download PDF

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Publication number
US3908511A
US3908511A US407651A US40765173A US3908511A US 3908511 A US3908511 A US 3908511A US 407651 A US407651 A US 407651A US 40765173 A US40765173 A US 40765173A US 3908511 A US3908511 A US 3908511A
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US
United States
Prior art keywords
central shaft
central
shaft portion
pistons
lateral part
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
US407651A
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English (en)
Inventor
Giancarlo Spiantini
Giacomo Bardoni
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.)
Individual
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Individual
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Filing date
Publication date
Priority claimed from IT2657472A external-priority patent/IT1006550B/it
Priority to FR7325312A priority Critical patent/FR2190543B3/fr
Application filed by Individual filed Critical Individual
Priority to US407651A priority patent/US3908511A/en
Application granted granted Critical
Publication of US3908511A publication Critical patent/US3908511A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • 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
    • F16D41/00—Freewheels or freewheel clutches
    • F16D41/06—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface
    • F16D41/069—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface the intermediate members wedging by pivoting or rocking, e.g. sprags
    • F16D41/07—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface the intermediate members wedging by pivoting or rocking, e.g. sprags between two cylindrical surfaces
    • 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
    • F16D49/00—Brakes with a braking member co-operating with the periphery of a drum, wheel-rim, or the like
    • F16D49/20—Self-tightening brakes
    • 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
    • F16D65/00—Parts or details
    • F16D65/02—Braking members; Mounting thereof
    • F16D65/028—Rollers
    • 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
    • F16D2125/00—Components of actuators
    • F16D2125/18—Mechanical mechanisms
    • F16D2125/58—Mechanical mechanisms transmitting linear movement
    • F16D2125/66—Wedges

Definitions

  • ABSTRACT A device usedifor presses, shears, punching equipment and the like having a central shaft, radially actuated pistons, and two bilateral portions for distributing the 77- 48 8 900 5 U7 W 9- 9 MR o 2 9 C s U 2 5 ⁇ 51] Int. B23D 1/08 drive fluid of the central shaft and for locking the shaft in work sequence, the first bilateral portion for fluid distribution having a rotary body with two ducts [58] Field of Search 60/537, 539,541; 192/3 R;
  • the second bilateral portion having stoppage means for locking the shaft.
  • This invention relates to a device to be'used with a work-performing machine so as to bring about the feeding of material with programmed stops in accordance with the type of work to be performed.
  • An object of the present invention is to provide a feeding device capable of working with precision and at a high output rate in any required work, assuring.
  • one of said lateral parts namely that for the distribution of the pressurized fluid for the direct drive of the said pistons, comprises a rotary body with a central shaft and two conduits respectively for the input and the output of the pressurized fluid originating from the outside,joined by two hollow connection sectors with the cylinders for the sliding of the radial pistons of the central part, whereas the other lateral part of the device is provided with stoppage means capable of instantaneous locking of the central shaft in a predetermined work program of the machine, constituted by two half-rings acting simultaneously against profiled bodies or blocks surrounding the shaft itself,
  • FIG. I shows a partially cut away device in accordance with the present invention, viewed from the top.
  • FIG. 2 represents the same device drawn on a different scale along the sectional plane 2 2.
  • FIG. 3 is a section along line 3 3 of FIG. 1, on a different scale.
  • FIG. 4 is a section along line 4 4 of FIG. 1.
  • the device of the present invention comprises a median part A and two bilateral parts B and C respectively for distribution of the actu ating medium of the central shaft and for the locking of said shaft in the programming sequence.
  • the central shaft has the form of two half-shafts 6A and 6B coaxially joined through torsional linkage by means of the pin 50.
  • the median part A suitably connected to the other parts B and C to work jointly therewith comprises as shown in greater detail in FIG. 2 two pairs of pistons 2 sliding in diametrically opposite direction in cylinders 3 for the accommodating of the pressurized fluid:
  • the lateral part B of this device is designes to distribute to the median part A the compressed fluid coming from the outside by passing through the central input pipe designated in FIGS. 1 and 3 by the reference 51 and which is being discharged during the operating phases via the outlet duct 52; obviously these ducts can be arranged in a manner different from that shown in the drawings. r
  • a rotary fluid distribution body 53 (FIG. 3) provided with hollow sectors 54 and 55 connecting in the respective operating phases the input and output pipes 51 52 with the ducts 56, 57, 58, and 59 for the supply of the sliding cylinders 3 of thepistons 2.
  • the pistons 2 are connected to the device-actuating half shafts 6A and 6B by means of the eccentrically arranged connecting rods 4 so as to bring about a uniform and smooth rotation of said shaft.
  • the pressurized'fluid originating from the input pipe 51 will be carried into the left-hand cylinder 3 as shown in FIG. 3 by traversing the duct 61, the ho]- low sector 54 and the duct 56, while the discharge fluid originating from the passive cylinders is returned to the outside through the ducts 57-58-59, the sector 55 shared by these duets, the discharge pipe 62 and from there through the outlet pipe 52.
  • the length of the hollow sectors 54 and 55 and the shift'in' the ducts will be such as to maintain progressively, in the continuous rotation of the central shaft 6A-6B, one or more pistons in active position.
  • the lateral locking part C of the half-shaft 6B to be joined to the machine comprises, as shown in FIG. 4, two half-rings 63 concentrically arranged on said halfshaft. These two half-rings terminate in two radial protuberances having a sloped plane 64 placed inside the cavities 65, likewise having sloped planes and forming a part of two bell-shaped pistons 66 sliding inside corresponding cylinders 67 each one of which is provided with an inlet pipe 68 for the pressurized fluid originating from the outside under the control of suitable means.
  • Suitable springs 69 maintain the half-rings 63 spaced apart, while other springs 70 maintain the bellshaped pistons 66 spaced from the radial protuberances 64 of the half-rings when said portion C must be excluded from the operation of the device so as to permit the central shafts 6A-6B to rotate freely as described above.
  • a series of profiled blocks or bodies 71 connected freely articulating with one or a plurality of supporting cages 72 similar to those of axial bearings is placed between the half-rings 63 and the half-shaft 6B.
  • These blocks are bilaterally restrained, to prevent their detaching by means of suitable holding rings (for claritys sake not shown in the drawing) and are arranged slightly inclined with respect to the radial position so as to permit, as stated above, the free rotation of the central shaft 6A6B.
  • a pressurized fluid is forced into the duct 68 by suitable means as described above.
  • Such an introduction of compressed air causes the movement of the bell-shaped pistons 66 by overcoming the effect of the springs 70 and, therefore, the movement toward each other of the half-rings 63 by overcoming in this case the effect of the spring 69, having the result of instantaneously locking the half-shaft 6B and thereby the half-shaft 6A, insofar as the said half-rings 63 compel the blocks 71 to straighten out radially, i.e., to move in their configuration of maximum extension.
  • the present invention provides that, simultaneously with the input of pressurized fluid into the duct 68 of the corresponding duct 51 or 52 in the output phase of the fluid from the sliding cylinders 3 of the pistons 2 is choked by suitable means, causing a reduction in the working crosssection of these ducts.
  • the pistons 2 are being braked during their inactive stroke, thereby restraining the half-shaft 6A and consequently also the half-shaft 6B. It is of course understood that this choking effect on the ducts 51 or 52 must be controlled sufficiently ahead of the input of the fluid into the cylinders 67.
  • a device for feeding material into a workperforming machine comprising a casing having a central part and two lateral parts, a central shaft portion extending through one of the lateral parts and into the central part, another central shaft portion extending from the central part and through the other lateral part, the central part having a linkage interconnecting the central shaft portions, radial cylinders, piston reciprocating in said cylinders, connecting rods connecting said pistons with said linkage, one lateral part having a rotary body connected with the firstmentioned central shaft portion and having hollow sectors, input and output pipes communicating with the outside and ducts connected with said pipes and said sectors and communicating with said radial cylinders, whereby said one lateral part serves for the distribution of pressurized fluid for the drive of the central shaft portions, the other lateral part comprising blocks carried by said other central shaft portion and two half rings engaging said blocks and surrounding said other central shaft portion, whereby said other lateral part serves to lock the central shaft portions in the performance sequence of the machine, wherein the other lateral
  • a device in accordance with claim 1, comprising springs engaging said bell-shaped pistons and said protuberances.
  • a device in accordance with claim 2 comprising supporting cages interconnecting said blocks and surrounding said other central shaft portion, said blocks extending at an inclination to the radii of said other central portion.
  • a device in accordance with claim 1, comprising means choking the output pipe prior to the inflow of compressed fluid into the cylinders.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Actuator (AREA)
US407651A 1972-07-04 1973-10-18 Device for feeding material into work performing machines Expired - Lifetime US3908511A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR7325312A FR2190543B3 (ja) 1972-07-04 1973-07-03
US407651A US3908511A (en) 1972-07-04 1973-10-18 Device for feeding material into work performing machines

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2657472A IT1006550B (it) 1972-07-04 1972-07-04 Dispositivo ad albero ruotante per l avanzamento con arresti program mati del materiale in lavorazione nelle macchine operatrici
US407651A US3908511A (en) 1972-07-04 1973-10-18 Device for feeding material into work performing machines

Publications (1)

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US3908511A true US3908511A (en) 1975-09-30

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US407651A Expired - Lifetime US3908511A (en) 1972-07-04 1973-10-18 Device for feeding material into work performing machines

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FR (1) FR2190543B3 (ja)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001061150A1 (en) * 2000-02-15 2001-08-23 Rineer Hydraulics, Inc. Hydraulically retractable hydraulic motor
WO2020212017A1 (de) * 2019-04-16 2020-10-22 Festool Gmbh Werkzeugvorrichtung und verfahren
US12128514B2 (en) 2019-04-16 2024-10-29 Festool Gmbh Tool apparatus and method

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2203646A (en) * 1936-03-07 1940-06-04 Aspden Ernest Wallace Pump
US2743708A (en) * 1951-10-05 1956-05-01 Gardner Denver Co Control for pneumatic hoist
US3324769A (en) * 1965-02-12 1967-06-13 Ingersoll Rand Canada Means of increasing stall torque of piston-type radial air motors
US3712431A (en) * 1971-02-26 1973-01-23 Kreske Walter J Torque device for winches and the like
US3756354A (en) * 1971-04-08 1973-09-04 Landis Tool Co Diameter brake and locking device for a rotatable shaft

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2203646A (en) * 1936-03-07 1940-06-04 Aspden Ernest Wallace Pump
US2743708A (en) * 1951-10-05 1956-05-01 Gardner Denver Co Control for pneumatic hoist
US3324769A (en) * 1965-02-12 1967-06-13 Ingersoll Rand Canada Means of increasing stall torque of piston-type radial air motors
US3712431A (en) * 1971-02-26 1973-01-23 Kreske Walter J Torque device for winches and the like
US3756354A (en) * 1971-04-08 1973-09-04 Landis Tool Co Diameter brake and locking device for a rotatable shaft

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001061150A1 (en) * 2000-02-15 2001-08-23 Rineer Hydraulics, Inc. Hydraulically retractable hydraulic motor
US6312238B1 (en) 2000-02-15 2001-11-06 Rineer Hydraulics, Inc. Hydraulically retractable hydraulic motor
WO2020212017A1 (de) * 2019-04-16 2020-10-22 Festool Gmbh Werkzeugvorrichtung und verfahren
US12128514B2 (en) 2019-04-16 2024-10-29 Festool Gmbh Tool apparatus and method

Also Published As

Publication number Publication date
FR2190543A1 (ja) 1974-02-01
FR2190543B3 (ja) 1976-06-25

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