EP1726378A1 - Dispositif à ébarber - Google Patents

Dispositif à ébarber Download PDF

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Publication number
EP1726378A1
EP1726378A1 EP05106498A EP05106498A EP1726378A1 EP 1726378 A1 EP1726378 A1 EP 1726378A1 EP 05106498 A EP05106498 A EP 05106498A EP 05106498 A EP05106498 A EP 05106498A EP 1726378 A1 EP1726378 A1 EP 1726378A1
Authority
EP
European Patent Office
Prior art keywords
semi
finished part
punch
matrix die
shearing
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.)
Granted
Application number
EP05106498A
Other languages
German (de)
English (en)
Other versions
EP1726378B1 (fr
Inventor
Giuliano Baglioni
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.)
Automazioni Industriali Srl
Original Assignee
Automazioni Industriali Srl
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 Automazioni Industriali Srl filed Critical Automazioni Industriali Srl
Publication of EP1726378A1 publication Critical patent/EP1726378A1/fr
Application granted granted Critical
Publication of EP1726378B1 publication Critical patent/EP1726378B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/02—Die forging; Trimming by making use of special dies ; Punching during forging
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J13/00—Details of machines for forging, pressing, or hammering
    • B21J13/08—Accessories for handling work or tools
    • B21J13/10—Manipulators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/002—Hybrid process, e.g. forging following casting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D31/00—Cutting-off surplus material, e.g. gates; Cleaning and working on castings
    • B22D31/002—Cleaning, working on castings

Definitions

  • a semi-finished part obtained by casting or forging exhibits a central body, corresponding to the desired shape for the finished part, and a set of burrs that need to be sheared.
  • shearing machine comprising a matrix die, on which the semi-finished part rests, and a top punch, suitable for moving for shearing the burrs.
  • Die and punch are aligned along a vertical axis, perpendicular to a ground plane on which the machine rests.
  • the matrix die and the top punch are aligned along an axis which is tilted relative to the vertical axis.
  • the part drops through the matrix die and the sheared burrs drop by gravity into a collecting box.
  • the object of the present invention is to provide a device for shearing burrs of a semi-finished part which should overcome the disadvantages mentioned with reference to the prior art.
  • Figure 1a shows a matrix die and a punch of a device according to the present invention, in a loading configuration of said matrix die;
  • Figure 1b shows the matrix die and the punch of Figure 1a in an approach configuration
  • Figure 2a shows the device according to the invention in a loading configuration of the punch
  • Figure 2b shows the matrix die and the punch of Figure 2a in an approach configuration
  • Figure 3a shows the device according to the invention in a shearing configuration
  • Figure 3b shows a perspective view of the device of Figure 3a
  • Figures 4a and 4b show an asymmetric semi-finished part, respectively in an arrangement that shows the left or the right face;
  • Figures 5a to 5c show an operating sequence of punch actuating means
  • FIGS 6, 7a, 7b and 8 schematically show an operating sequence of a shearing apparatus comprising the device according to the invention.
  • Figure 9 shows an embodiment diagram of the device collecting means according to the present invention.
  • reference numeral 1 globally denotes a device for shearing the burrs of a semi-finished part, for example an asymmetric semi-finished part S (figures 4a and 4b).
  • the shearing device 1 can be arranged on a ground plane T-T, for example coinciding with the working level of the site where the systems are installed.
  • Device 1 comprises a fixed matrix die 2 having a seating cavity 2a which exhibits an access opening (figures 1a and 1b).
  • said seating cavity 2a of the fixed matrix die 2 is an example of embodiment of seating means, suitable for seating at least partly the part body P of said semi-finished part S.
  • the access opening of the seating cavity is shaped as the part body P of the semi-finished part S.
  • the semi-finished part S can be inserted into the access opening so that the part body P is partly seated into the seating cavity 2a, whereas burrs B remain outside the cavity, resting on the matrix die surface.
  • said device 1 comprises means for supporting the matrix die 2 suitable for fixing said matrix die to the device structure.
  • Device 1 further comprises holding means suitable for holding the semi-finished part S into the seating cavity of the matrix die.
  • said holding means are suitable for influencing said semi-finished part with an action that at least overcomes the gravity action acting on said semi-finished part.
  • said holding means comprise intake means suitable for providing an air flow flowing through said access opening of the matrix die 2, for influencing said semi-finished part S with such an action as to hold it into said seating cavity 2a of the matrix die.
  • said holding means comprise at least one intake duct 3 in fluid communication with said seating cavity 2a and with pumping means suitable for generating said air flow.
  • Device 1 further comprises a punch 4 exhibiting a shearing end 6 suitable for influencing said semi-finished part S when seated into said seating cavity 2a for shearing burrs B from the part body P and obtaining the sheared part.
  • Punch 4 is movable from a bottom limit position, wherein the shearing end 6 occupies a bottom limit height relative to said ground plane T-T, and a top limit position, wherein said shearing end 6 occupies an top limit height relative to said ground plane T-T.
  • the bottom limit height is smaller than the top limit height.
  • the shearing end 6 is suitable for influencing the semi-finished part S for carrying out the shearing.
  • the matrix die 2 is arranged above punch 4, so that said punch 4 must carry out a movement from bottom upwards to carry out the shearing of the semi-finished part S.
  • said device 1 comprises means for guiding punch 4 suitable for guiding said punch for the movement.
  • said guiding means comprise a shearing head 7.
  • Device 1 further comprises actuating means suitable for moving said punch for the movement.
  • said actuating means comprise at least one oil-pressure cylinder 9.
  • said device 1 comprises speed variation means suitable for varying the movement speed of punch 4 between the bottom limit position and the top limit position.
  • said speed variation means comprise said punch actuating means.
  • Said speed variation means are suitable for imposing a higher speed on the punch between the bottom limit position and an intermediate approach position and for imposing a lower speed on said punch between the intermediate approach position and the top limit position.
  • said speed variation means are oil-pressure means (figures 5a, 5b and 5c) suitable for varying said speed by the action of a fluid, for example oil, on said punch.
  • said speed variation means comprise a dual jack exhibiting a first chamber 8 having nominal section A' and a second chamber 10 having nominal section A'' .
  • the first section A' is smaller than the second section A''.
  • the chambers can be fed with oil under pressure.
  • the rate at which oil is fed to the chambers being equal, the first speed is greater than the second speed.
  • the punch movement from the bottom limit position to the intermediate position is called approach stroke, since said movement is suitable for bringing end 6 of punch 4 in the proximity of the semi-finished part held into the matrix die, without carrying out the shearing, but such as to carry out the shearing making the punch perform a further movement, smaller than the approach stroke.
  • the punch movement between the intermediate position and the top limit position is called shearing stroke since end 6 of punch 4, influencing the semi-finished part held into the matrix die, carries out the shearing.
  • end 6 of punch 4 exhibits a seating suitable for seating at least partly the part body P of said semi-finished part S.
  • said seating exhibits at least one suction cup suitable for hooking the part body P of the semi-finished part S or at least one intake duct for sucking the semi-finished part and holding said semi-finished part onto the punch.
  • device 1 comprises first discharge means suitable for discharging the semi-finished part from the seating cavity of the matrix die.
  • said first discharge means comprise a piston, for example hydraulic or pneumatic, comprising a stem suitable for crossing said seating cavity of the matrix die for influencing, at a side opposed to that of action of said punch, the semi-finished part S seated into said seating cavity 2a.
  • a piston for example hydraulic or pneumatic, comprising a stem suitable for crossing said seating cavity of the matrix die for influencing, at a side opposed to that of action of said punch, the semi-finished part S seated into said seating cavity 2a.
  • said discharge means are suitable for crossing also said intake duct for reaching the semi-finished part arranged into the seating cavity of the matrix die.
  • Device 1 further comprises position detecting means, suitable for detecting the position of the semi-finished part into the seating cavity of the matrix die and for emitting a signal corresponding to a correct position or to an incorrect position.
  • said detecting means are suitable for detecting the extension of the approach stroke carried out by the punch.
  • said detecting means are suitable for detecting the extension of the approach stroke carried out by the punch.
  • Said detecting means are suitable for detecting the height reached by the punch when the semi-finished part abuts against the matrix die and is supported by the punch, emitting a signal corresponding to a correct position or to an incorrect position of said semi-finished part S.
  • device 1 further comprises second discharge means suitable for discharging the semi-finished part S from the seating cavity of punch 4.
  • device 1 further comprises collecting means suitable for allowing the collection of the sheared parts (figure 9).
  • said collecting means comprise a collecting box 12 internally comprising at least two separate spaces.
  • said collecting box 12 exhibits a temporary collecting space 14, directly in fluid communication with said intake duct 3 connected to the matrix die 2 of device 1.
  • the collecting box 12 exhibits a discharge space 16, separated from the temporary collecting space 14 by separating means.
  • said separating means comprise a movable gate 15, for example movable from a closed configuration, wherein it separates said temporary collecting space 14 from said discharge space 16, to an open configuration.
  • the discharge space 16 comprises a discharge wall 20 suitable for being moved for allowing the part discharge from said collecting box 12 to an external container 22.
  • said discharge wall 20 is movable, for example turnable, from a closed configuration wherein it closes the discharge space 16 and allows the collection of sheared parts into said space, to an open configuration, suitable for discharging the sheared parts into the external container.
  • Device 1 is suitable for cooperating with gripping means suitable for collecting the semi-finished part from a loading plane and for arranging it into said device 1 for shearing. Said device and said gripping means form a shearing apparatus 30.
  • said gripping means comprise a robot arm 32, suitable for collecting the semi-finished part from the loading plane and bringing it to device 1.
  • said arm 32 comprises a base portion 34 and an end portion 36, operatively connected to said base portion.
  • said arm 32 comprises a gripping hand 37, suitable for gripping said semi-finished part and arranging it at the end of said end portion 36 of arm 32.
  • said gripping means comprise rotation means suitable for operatively connecting said base portion 34 to said end portion 36 or said end portion 36 to said hand 37 for upturning the gripped semi-finished part.
  • Said shearing apparatus further comprises recognition means suitable for recognising the arrangement taken by said semi-finished part S on said loading plane.
  • some semi-finished parts exhibit such shape that if on the loading plane they rest on one side, the part body P exhibits a first face, for example called left face, whereas if they rest on the other side, the part body exhibits a second face, called right face, not coinciding with the left face by simple rotation about an axis perpendicular to the support plane.
  • Such semi-finished parts are called asymmetric.
  • Said recognition means are suitable for recognising the arrangement of the semi-finished part S, detecting whether said semi-finished part exhibits an arrangement of the part body P with left face or with right face. Said recognition means generate an arrangement information corresponding to the arrangement detected for the semi-finished part.
  • the shearing apparatus further comprises management means, operatively connected to at least said recognition means and said gripping means.
  • Said management means are suitable for sending a control signal to said loading means based on said arrangement information received from said recognition means.
  • the loading means are controlled for collecting the semi-finished part and loading it onto the seating of punch 4 suitable for seating the right face of the part body.
  • the loading means are controlled for collecting the semi-finished part and loading it, after upturning, into the seating cavity of the matrix die, provided with an access opening shaped according to the left face of the part body.
  • said recognition means comprise a camera.
  • said shearing apparatus comprises a device for upturning the parts, for example of the type shown in the World Application PCT/IT03/00755 by the same Applicant.
  • the access opening of the seating cavity of the matrix die is shaped as the left face of the part body, whereas the seating of the punch is suitable for seating the right face of the part body.
  • the semi-finished part S is arranged on the loading plane, in such a position relative to arm 32 as to be collected by said arm.
  • the semi-finished part rests on the loading plane so that the part body shows the left face.
  • the detecting means detect the face of the semi-finished part and identify the part body in the arrangement with left face. Such information is allocated in an arrangement information and transmitted to said management means.
  • the loading arm of the apparatus is arranged with the gripping hand 37 above the semi-finished part.
  • the semi-finished part is at least partly seated into said gripping hand 37 and lifted off the loading plane.
  • arm 32 collects the semi-finished part S.
  • the semi-finished part is held by the gripping hand of the arm, to prevent dropping by gravity.
  • the gripping hand keeps the semi-finished part raised, gripping it from top.
  • Such configuration is called top gripping configuration.
  • the management means based on said arrangement information, control said gripping means for loading the semi-finished part into the seating cavity 2a of the matrix die 2.
  • said arm 32 carries out a movement for bringing the semi-finished part S between punch and matrix die and in particular, the semi-finished part S is upturned thanks to the rotation of the gripping hand relative to the end portion 36 of arm 32 (figure 7b).
  • the gripping hand 37 grips the semi-finished part S from the bottom.
  • Such configuration is called bottom holding configuration.
  • said gripping hand carries out adjustment rotations for allowing correct insertion of the part body into the access opening of matrix die 2.
  • the part body P of the semi-finished part S is inserted into the access opening of matrix die 2 and is held into said position by the action of said holding means (figures 1a and 7b).
  • said semi-finished part S is held in abutment with the surface of matrix die 2 as the access opening is sheared in the shape of the left face of the part body P and burrs B exit from said opening, as they edge said part body P.
  • punch 4 is raised from the bottom limit position to the intermediate position, wherein it slightly touches the part body P held to the matrix die 2 (figure 1b).
  • the detecting means detect the correct position of the part body into the matrix die access cavity, for example by detecting the height reached by the punch.
  • said management means control said punch for carrying out the shearing stroke.
  • said punch moves from the intermediate limit position to the top limit position, carrying out the shearing of the semi-finished part (figures 3 and 8).
  • the burrs detach from the part body and drop by gravity.
  • the semi-finished part rests on the loading plane so that the part body shows the right face.
  • the detecting means detect the face of the semi-finished part and identify the part body in the arrangement with right face. Such information is allocated in an arrangement information and transmitted to said management means.
  • arm 32 of apparatus 30 is arranged with the gripping hand 37 above the semi-finished part (figure 6).
  • the semi-finished part is at least partly seated into said gripping hand 37 and lifted off the loading plane.
  • top gripping configuration In said configuration, the gripping hand keeps the semi-finished part raised, gripping it from top.
  • Such configuration is called top gripping configuration.
  • the management means control said collecting means for loading the semi-finished part into the seating of the shearing head.
  • said management means control the movement of the arm for allowing the approach of the semi-finished part to the punch.
  • said gripping hand carries out adjustment rotations for allowing correct insertion of the part body onto the punch.
  • the part body P of the semi-finished part S is inserted on the punch and is held into said position by the action of said holding means, in particular by said suction cups or by the action of said suction (figures 2a and 7a).
  • punch 4 is raised from the bottom limit position to the intermediate position, so that the part body in moved in abutment with the matrix die.
  • said intermediate limit position the burrs rest on the surface of matrix die 2, whereas the part body P is seated into the seating cavity of the matrix die (figure 2b).
  • the detecting means detect the correct position of the part body into the matrix die access or on the punch cavity, for example by detecting the height reached by the punch.
  • punch 4 is controlled for carrying out a quick downward movement.
  • said punch also functions as discharge means.
  • said management means control said punch 4 for carrying out the shearing stroke.
  • said punch moves from the intermediate limit position to the top limit position, carrying out the shearing of the semi-finished part (figures 3a and 8).
  • the burrs detach from the part body and drop by gravity.
  • Said holding means suck in the sheared part body P through the intake duct, carrying it into the collecting box 12.
  • said separating means allow the discharge of the sheared parts from said temporary collecting space 14 to said discharge space 16 while allowing said intake means to continue their correct operation during said discharge operation.
  • the discharge wall 20 is in a closed configuration so as to prevent the suction action of said intake means from being negatively affected.
  • the gate returns to the closed configuration, wherein it separates the temporary collecting space 14 from the discharge space 16, whereas the discharge wall 20 moves to the open configuration, thus allowing the sheared parts to be discharged into the external container 22 or delivered to further processing.
  • the device according to the present invention allows collecting semi-finished parts having such a face as to be difficult to be gripped from top.
  • the device according to the present invention allows moving the sheared burrs away by the gravity action.
  • the device allows considerably increasing the productivity even for semi-finished parts having an asymmetric part body.
  • the apparatus allows quick positioning of the asymmetric parts to prepare them for shearing, both when they are arranged with left and with right face.
  • said high productivity is achieved with a single workstation, that is, with a single coupling between a punch and relevant matrix die.
  • other solutions of the prior art are complex and expensive, as they are provided with multiple matrix dies, for example arranged onto turntables.
  • the device allows continuing the process even while the sheared parts are discharged into the external container.
  • the matrix die and the punch are aligned along an axis which is tilted relative to the vertical of the ground plane.
  • said punch actuating means are electrical means.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Punching Or Piercing (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)
EP05106498A 2005-05-27 2005-07-14 Dispositif à ébarber Not-in-force EP1726378B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000062A ITBS20050062A1 (it) 2005-05-27 2005-05-27 Dispositivo per la tranciatura di bave

Publications (2)

Publication Number Publication Date
EP1726378A1 true EP1726378A1 (fr) 2006-11-29
EP1726378B1 EP1726378B1 (fr) 2008-01-30

Family

ID=36933342

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05106498A Not-in-force EP1726378B1 (fr) 2005-05-27 2005-07-14 Dispositif à ébarber

Country Status (4)

Country Link
EP (1) EP1726378B1 (fr)
AT (1) ATE385207T1 (fr)
DE (1) DE602005004606D1 (fr)
IT (1) ITBS20050062A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105150268A (zh) * 2015-08-18 2015-12-16 江西洁美电子科技有限公司 一种电子载体纸带打孔烧毛成套设备
CN105171822A (zh) * 2015-08-18 2015-12-23 江西洁美电子科技有限公司 一种载体纸带打孔机打孔毛刺去除系统

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3554065A (en) * 1967-06-05 1971-01-12 Feintool Ag Precision cutting punching tool for precision punching of parts
DE2739279A1 (de) * 1977-08-31 1979-03-15 Ptx Pentronix Verfahren und vorrichtung zur erzeugung von kugelfoermigen artikeln
US4665785A (en) * 1984-10-26 1987-05-19 Bayrisches Druckgusswerk Thurner Gmbh & Co. Trim press
US6237454B1 (en) * 1999-06-25 2001-05-29 Honda Of America Mfg., Inc. Self-centering trim punch

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3554065A (en) * 1967-06-05 1971-01-12 Feintool Ag Precision cutting punching tool for precision punching of parts
DE2739279A1 (de) * 1977-08-31 1979-03-15 Ptx Pentronix Verfahren und vorrichtung zur erzeugung von kugelfoermigen artikeln
US4665785A (en) * 1984-10-26 1987-05-19 Bayrisches Druckgusswerk Thurner Gmbh & Co. Trim press
US6237454B1 (en) * 1999-06-25 2001-05-29 Honda Of America Mfg., Inc. Self-centering trim punch

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105150268A (zh) * 2015-08-18 2015-12-16 江西洁美电子科技有限公司 一种电子载体纸带打孔烧毛成套设备
CN105171822A (zh) * 2015-08-18 2015-12-23 江西洁美电子科技有限公司 一种载体纸带打孔机打孔毛刺去除系统
CN105150268B (zh) * 2015-08-18 2017-06-30 江西洁美电子科技有限公司 一种电子载体纸带打孔烧毛成套设备

Also Published As

Publication number Publication date
DE602005004606D1 (de) 2008-03-20
EP1726378B1 (fr) 2008-01-30
ATE385207T1 (de) 2008-02-15
ITBS20050062A1 (it) 2006-11-28

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