WO2014013290A2 - Prensa de estampación - Google Patents
Prensa de estampación Download PDFInfo
- Publication number
- WO2014013290A2 WO2014013290A2 PCT/IB2012/053469 IB2012053469W WO2014013290A2 WO 2014013290 A2 WO2014013290 A2 WO 2014013290A2 IB 2012053469 W IB2012053469 W IB 2012053469W WO 2014013290 A2 WO2014013290 A2 WO 2014013290A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- movement
- press
- axial
- stamping press
- stamping
- Prior art date
Links
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
- B21D53/00—Making other particular articles
- B21D53/26—Making other particular articles wheels or the like
- B21D53/28—Making other particular articles wheels or the like gear wheels
-
- 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
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/02—Stamping using rigid devices or tools
- B21D22/06—Stamping using rigid devices or tools having relatively-movable die parts
-
- 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
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/02—Stamping using rigid devices or tools
- B21D22/08—Stamping using rigid devices or tools with die parts on rotating carriers
-
- 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
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/10—Stamping using yieldable or resilient pads
- B21D22/12—Stamping using yieldable or resilient pads using enclosed flexible chambers
-
- 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
- B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
- B21D28/16—Shoulder or burr prevention, e.g. fine-blanking
Definitions
- the present invention aims at a printing press that allows the manufacture of parts with straight, helical or angular cuts, of fixed or variable pitch, and combinations thereof; it comprises at least a first body and a second body; at least the first of said bodies has a turning movement, synchronized with a linear movement of advance of the same or of the other body; the second of said bodies will be provided with a free-spin or synchronized rotation mechanism with the first.
- IT 1 1371 13 describes a procedure for cutting sprockets with a helical profile and the corresponding product obtained;
- This invention describes a tooling in which the stamping of a piece is produced, for example a gear, comprising a punch, a die and a tailstock; the punch induces a rotational movement to the tailstock by means of a non-revolution lug, which is inserted in a recess in a complementary manner in the tailstock, the material having to be pre-formed in advance for the passage of the stud.
- This requires stage machining. Due to the movement of advance and simultaneous turn, these tools are expensive and complex, and only serve to be used for a particular piece; another almost identical piece will require the manufacture of a new tool with all its complexity and cost.
- This procedure only allows the manufacture of parts with a contour or a helical interior with a fixed pitch, and in no case allows the manufacture of parts with helical grooving of variable pitch.
- EP 0131770 describes a procedure for the fine cutting of parts and a tool of fine cutting for carrying out said procedure.
- the gears are straight cut and conical teeth, and are produced in several stages;
- the tool has no synchronized movement of rotation and advance.
- US 6729172 describes a tooling and a process for making straight cut gearwheels.
- EP 2208552 refers to a procedure and device for precision cutting of work pieces.
- the operation and the means used are similar to IT 1 1371 13.
- IT 1 1371 13 As in IT 1 1371 13, with this procedure and device only parts with a helical contour of fixed pitch can be made, although it allows a straight inside cut.
- the technique relies on a tool that has to be used in a commercial press.
- a first problem with these devices is that when performing on a tooling, a different piece, for example a similar piece or on a different scale with respect to another requires the manufacture of all the tooling with all the synchronization elements of the movements. The application is therefore unique. Each different piece will require a new tooling.
- the pitch of the cut (forward / turn ratio) helical or angular in all the documents described is fixed and predetermined by the design of the tooling.
- the current technique does not allow the realization of a piece with an outer and inner contour with different pitch or direction of rotation in the same operation and / or the same cycle.
- the present invention describes a printing press that has advantages that solve the aforementioned drawbacks, simplifies the realization of the tools and makes the manufacture of different pieces more flexible even with a single tooling by changing manufacturing parameters in the press itself.
- a printing press that has advantages that solve the aforementioned drawbacks, simplifies the realization of the tools and makes the manufacture of different pieces more flexible even with a single tooling by changing manufacturing parameters in the press itself.
- the printing press comprises:
- At least one of said bodies is linearly mobile with respect to the other that allows its approach or distance;
- the press further comprises in the first body:
- a third body rotatable with respect to the first body, by means of a drive mechanism or motor, for example hydraulic or electric; this third body may be hollow or accommodate an internal mechanism that can perform different movements, for example linear, rotary or combination thereof; in turn, this third body, in addition to the rotation, may be provided with a linear displacement mechanism; the rotational or axial movements of this third body are independent of those of the first and second bodies, although a synchronized movement may be programmed; the third body may have a single or multiple head;
- a fourth body movable axially (linearly) with respect to the first body that supports it; this fourth body can be realized by means of a set of actuating cylinders circling the third body, or it can be constituted by a single hollow cylinder crossed by the third body;
- a fifth body possibly rotating with free or induced rotation by means of a drive mechanism or motor, for example hydraulic or electric; said fifth body also has an axial movement; the rotational or axial movements of this fifth body are independent of those of the first, second and third bodies, although a synchronized movement may be programmed;
- This fifth body may comprise one or more independent heads.
- first and second lower and upper bodies respectively.
- the upper and lower positions can be reversed or the press arranged in another position, for example horizontal.
- some of the elements described for one of the upper or lower bodies may be arranged in the other of said bodies.
- a press with an upper body and a lower body.
- the lower body is provided with a third rotating body.
- This third rotating body is in a fixed position with respect to the lower body bench.
- This third rotating body is driven by a controlled movement mechanism or motor.
- a fourth body with linear movement is arranged; said fourth body will allow ejection of the parts and other operations.
- the upper body comprises in its lower part a fifth body; In this basic embodiment said fifth body has a free rotation and an actuated linear movement.
- a simple tooling with a contour punch and a contour die possibly a draft punch, as well as an upper ejector and a lower ejector will be provided.
- the metal band is placed, and the press will be operated so that the upper body is lowered until the upper ejector makes contact with the sheet; once the contact has been taken, the third rotating body starts (or continues) the turn while the upper body continues its descent; the fifth body (of free rotation) that constitutes a support of the piece that is being carried out is kept in its position of contact with the piece, while cutting the sheet between punch and die; the fourth body descends by the action of the upper body during the cut;
- a reverse (lifting) movement of the upper body is performed, the third body will rotate inversely in synchronization with the movement of the upper body, and the fourth body will perform a linear lifting movement to expel the excess of the sheet of the punch, the fifth body will perform a reverse (lifting) movement of the upper body is performed, the third body will rotate inversely in synchronization with
- the position of the first and second bodies is reversed, as well as of the components associated with them.
- the third body hollow will house an inner mechanism that will perform at least one linear movement and / or a free or controlled rotation.
- the lower body is the same as in the first embodiment.
- the upper body comprises in its lower part a fifth body;
- said fifth body has a controlled rotation and possibly an actuated linear movement.
- It also comprises a sixth body consisting of a hollow wrapping cylinder in which the fifth body is housed, or a set of cylinders arranged perimetrically around said fifth body, and which is axially movable with respect to the upper body that supports it.
- any of the straight interior openings such as the straight outer contours may take any form, not limited to a circular shape.
- Complex shapes usually by stage manufacturing, may comprise not only helical or angular circular shapes, but also portions thereof.
- the position of the first and second bodies is reversed, as well as of the components associated with them.
- the hollow of the third body will house at least one internal mechanism that will perform at least one linear movement in addition to a free or controlled rotation.
- the press in addition to the elements of the third embodiment, the fifth body comprises a seventh body provided with one or more elements with independently controlled rotation capacity each.
- parts such as those that can be made with the presses of the previous embodiments, and also helical or angular eccentric openings can be made.
- the position of the first and second bodies is reversed, as well as of the components associated with them.
- the hollow of the third body will house at least one internal mechanism that can perform at least one linear movement and / or a free or controlled rotation.
- a seventh embodiment similar to the fifth embodiment described, the rotary elements of the seventh body may also perform controlled linear movements.
- An eighth embodiment is similar to the seventh, but in which the position of the first and second bodies is reversed, as well as of the components associated with them.
- the third body will house at least one internal mechanism that can perform at least one linear movement and / or a free or controlled rotation.
- the third body and the fifth body may have controlled linear movement in addition to the rotary movement.
- all helical or angular cuts can be fixed or variable pitch;
- two helical or angular cuts when combined (inside and outside, for example) they can be made with the same helix sense or have opposite directions.
- the presses described in the different embodiments may be part of complex equipment suitable for making parts with helical or angular cut portions combined with straight cut portions, with transfer or progressive tools.
- several operation units can be accommodated, such as those defined with all its components or without any of them.
- Figure 1 shows a sectional view of a scheme of the press of the invention according to a first embodiment, with a first body (lower in the representation) constituting the bench, in which a third hollow core rotating body is arranged and a fourth movable body, and a second body that constitutes the press carriage, provided with a fifth body of free or controlled rotation;
- Figure 2 shows a sectional view of a scheme of the press of the invention according to a second embodiment, in which the first and second bodies are inverted as well as their components; constituting the bench the second body and the car the first; the third rotating body comprises in its core an internal element movable in the axial direction (for example an ejector) that can have free or controlled rotation;
- Figure 3 shows a sectional view of a scheme of the press of the invention according to a third embodiment, in which the first body is essentially identical to that of Figure 1, and in which the second (upper) body comprises a fifth controlled turning body, provided with one or more punches in a centered or offset position, arranged internally in a sixth body formed by a hollow axial displacement cylinder;
- Figure 4 shows a fourth embodiment in which the characteristics of the first body of Figure 2 are combined with those of the second body of Figure 3, in an inverted position;
- Figure 5 shows a sectional view of a scheme of the press of the invention according to a fifth embodiment, in which the first body is essentially identical to that of Figures 1 and 3, and in which the second body further comprises the fifth and sixth bodies of Figure 3 one or more independent elements with controlled rotation capacity;
- Figure 6 combines the characteristics of the first body of Figures 2 and 4 with the second body of Figure 5 in an inverted position; the inner element of the third body may comprise one or more rotating elements;
- Figure 7 shows a sectional view of a scheme of the press of the invention according to a fifth embodiment, in which the first body is essentially identical to that of Figures 1, 3 and 5, and in which the second body is as in Figure 5, but in which the independent elements of the fifth body also have axial movement capacity;
- Figure 8 combines the characteristics of the first body of Figure 6 with the second body of Figure 7 in an inverted position
- Figure 9 shows a detail of a head in the fifth body in the embodiments of Figures 3 and 4, in which the housing of the punches is observed;
- Figure 10 shows a detail of a head in the fifth body in the embodiments of Figures 5 and 6, in which the independent elements with controlled rotation capacity and the punches they support are observed;
- Figure 1 1 shows a detail of a head in the fifth body in the embodiments of Figures 7 and 8, in which the independent elements with controlled rotation capacity and controlled axial displacement, and the punches they support, are observed.
- the invention consists of a printing press comprising a first body (200), normally arranged in a lower position and comprising a bed (235), and a second body (100,300), normally arranged in a higher position and that constitutes the car of said press.
- the first body (200) comprises a third body (255);
- This third body (255) is arranged in the chassis (295) of the press or on the bed (235) and constitutes a rotating element with respect to said bed (235).
- Said third body (255) is formed by a hollow cylinder and is floatingly supported on the chassis (295).
- Said third body (255) will normally be supported on a hydraulic mattress (270,275), with an upper chamber (270) and a lower chamber (275).
- the filling or emptying of said chambers will cause a displacement of said third body (255) on said bed (235), for a perfect adjustment of the position, which will normally be blocked during the operation, or will produce a linear movement for certain operations.
- the third body (255) is provided with an actuation zone by means of an actuator (290).
- This actuator can be constituted by a mechanical, hydraulic, electrical system, among others. Wrapping said third body (255) is a fourth body (245,280) comprising a fixed part (280) normally anchored to the chassis (295) or to the press bed, and a mobile part (245).
- This fourth body (245,280) also comprises a hydraulic mattress (260,265) for axial displacement, formed by an upper chamber (260) and a lower chamber (265) that by means of the contribution or subtraction of fluid to one or the other will produce the desired displacement.
- the fourth body (245,280) can be formed by a hollow cylinder crossed by the third body (255), or by a set of cylinders arranged around said third body (255). Said fourth body (245,280) will operate a set of transfer candles (240), which in turn will actuate the transfer candles of the tool (225).
- the press comprises a tool with a lower base plate (230), a cutting punch for the contour (215), a belt ejector (210) and a movement transmission element Rotary (250) between the third body (255) and the corresponding components of the tool.
- the cutting punch for the contour (215) will rotate as the actuator (290) drives the rotation of the third body (255).
- the second body (100) (press carriage) is driven by a hydraulic cylinder (105). It comprises a fifth body (1 15) that is supported on a hydraulic mattress (125, 130), with an upper chamber (125) and a lower chamber (130), which will govern its displacement or axial position.
- This fifth body has free rotation capability or controlled by an actuator (not shown in the first embodiment).
- Said fifth body (1 15) acts on transfer candles (150) supported on the tool and on a groove shaped as an arc of circumference, and particularly on the upper base plate.
- the transfer candles (150) transmit the movement to the ejector (170) through a die (145), held by the upper plate (135).
- the press represents a central punch, housed in a punch plate (140) that has a free-turning mechanism, which can take any form since both forming the piece and ejecting it will rotate synchronously to the third body (255) either induced by the piece itself, or by a controlled rotation produced by an actuator.
- the press is in an inverted position with respect to the first embodiment, with the first body (200) above and the second body (100) below.
- the second body in this case, is identical to that of the first embodiment.
- the third body (255) may comprise a linearly movable inner element (203), which may have free or controlled rotational movement, or which will comprise at its end a device (202) that may have such mobility. Supported by the device (202) one or more ejectors (201) are arranged.
- the press also comprises a first body (200) and a second body (300) (it is designated with the same name but different numbering from that of the first embodiment because it is in this case an embodiment of high complexity ); the first body (200) is substantially identical to that described in the first embodiment, so it will not be described again.
- the second body shown in the upper part in Figure 3, comprises a fifth body (350);
- This fifth body (350) constitutes a rotating element with respect to said second body (300) and comprises at least one head (365) associated or integrated therein.
- Said fifth body (350) is formed by a hydraulic element that is floatingly supported on the second body (300).
- Said fifth body (350) will normally be supported on a hydraulic mattress (320,325), with an upper chamber (320) and a lower chamber (325). The filling or emptying of said chambers will produce a displacement of said fifth body (350) on said second body (300), for a perfect position adjustment, which will normally be locked during the operation, or will produce a linear movement for certain operations.
- the fifth body (350) is provided with a turning actuation zone by means of an actuator (315).
- This actuator can be constituted by a mechanical, hydraulic, electrical system, among others.
- Wrapping said fifth body (350) is a sixth body (330,345) comprising a fixed part (330) with respect to said fifth body (350), and a moving part (345).
- This sixth body (330,345) also comprises a hydraulic mattress (335,340) for axial displacement, formed by an upper chamber (335) and a lower chamber (340) which by means of the contribution or subtraction of fluid from one or the other will produce the desired displacement.
- the sixth body (330,345) may be formed by a hollow cylinder crossed by the fifth body (350), or by a set of hydraulic or electromechanical actuators arranged around said fifth body (350). Said sixth body (330,345) will actuate a set of transfer candles (355) that will act on an ejector (375). The ejector (375) slides axially and / or rotationally within the die (370). The ejector (375) is anchored to the head (365) of the fifth body (350).
- the fifth body (350) and the head (365) are normally coupled by means of a joint (360) so that the first one transmits to the second, a synchronized rotary movement, and said head (365) in turn transmits the rotary movement to the ejector (375).
- Supported by the head (365) are placed punches (385) that accompany it in all its axial or rotary movements.
- the ejector (375) comprises an internal axial groove concordant with an external axial groove of the head (365), so that there is freedom in the relative axial movement between them, but the rotation of both must be simultaneous ; nevertheless, according to an alternative embodiment, the rotational movement of one and the other are independent actuated by two actuators, and are synchronized if necessary by means of the corresponding operational programming.
- the press is in an inverted position with respect to the third embodiment, with the first body (200) above and the second body (300) below.
- the first body (200) will in this case be essentially the same as that of the second embodiment, and the second body (300) substantially identical to that of the third embodiment.
- the movable inner element (203) may comprise one or more rotating elements, in accordance with the rotating elements of the second body.
- the fifth body which is movable in a rotational and axial direction, supported by the second body (300) is provided with at least one head (365) which in turn comprises one or more rotating elements (304) integrated therein.
- this head may be constituted as part of the same fifth body.
- These rotary elements (304) are actuated by means of an actuator that allows at all times a positional and speed control of said rotary elements (304).
- the first body is essentially identical to that of the third embodiment.
- the positions of the first body (200) and the second body (300) are reversed, and the third body, supported in the first body, is provided, as in the fourth embodiment, with at least one element interior with axial and possibly rotary movement, and / or provided with independent rotary elements.
- a seventh embodiment is given by a seventh embodiment.
- the rotating elements (304) arranged in the head (365) arranged in turn in the fifth body (350) are also provided with controlled axial mobility.
- This mobility is provided by a hydraulic device, for example a single or double acting hydraulic cylinder with an upper chamber (302) and a lower chamber (303), with controlled position and speed.
- the press also includes a tooling that may be provided with independent axial or rotary moving elements, the drive of which is driven and transmitted by said press also independently.
- controlled movement establishes that in which a determined instantaneous speed and position is determined and the control thereof, said movement is activated by means of actuators.
- the references to the axial or linear movements describe the movements of approach or distance between the first and second bodies of the press or of the elements that these carry.
- the drive can be one, the other or both.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/IB2012/053469 WO2014013290A2 (es) | 2012-07-06 | 2012-07-06 | Prensa de estampación |
BR112015000346A BR112015000346A2 (pt) | 2012-07-06 | 2012-07-06 | prensa de estamparia |
US14/412,064 US9676021B2 (en) | 2012-07-06 | 2012-07-06 | Stamping press |
MX2015000157A MX355139B (es) | 2012-07-06 | 2012-07-06 | Prensa de estampación. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/IB2012/053469 WO2014013290A2 (es) | 2012-07-06 | 2012-07-06 | Prensa de estampación |
Publications (4)
Publication Number | Publication Date |
---|---|
WO2014013290A2 true WO2014013290A2 (es) | 2014-01-23 |
WO2014013290A3 WO2014013290A3 (es) | 2014-05-08 |
WO2014013290A9 WO2014013290A9 (es) | 2014-07-17 |
WO2014013290A4 WO2014013290A4 (es) | 2014-09-12 |
Family
ID=49681061
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IB2012/053469 WO2014013290A2 (es) | 2012-07-06 | 2012-07-06 | Prensa de estampación |
Country Status (4)
Country | Link |
---|---|
US (1) | US9676021B2 (es) |
BR (1) | BR112015000346A2 (es) |
MX (1) | MX355139B (es) |
WO (1) | WO2014013290A2 (es) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114074142A (zh) * | 2021-11-09 | 2022-02-22 | 怀化华晨电子科技有限公司 | 一种电子真空器件制造用冲压装置 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108555061A (zh) * | 2018-06-23 | 2018-09-21 | 东莞理工学院 | 一种能够健康维护的压平切块收集一体机 |
WO2023000546A1 (zh) * | 2021-07-22 | 2023-01-26 | 林志斌 | 一种冲压装置、分拣机及建筑玻璃包装结构 |
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US3394432A (en) * | 1963-12-18 | 1968-07-30 | R Laurent Sa Atel | Apparatus for the production of helically toothed mechanical parts from sintered metals |
IT1137113B (it) * | 1981-03-31 | 1986-09-03 | Stama Spa | Procedimento per la tranciatura di ruote dentate a profilo elicoidale e prodotti cosi' ottenuto |
EP0528761A1 (de) * | 1991-08-17 | 1993-02-24 | Alvier Werkzeugbau Ag | Modulare Vorrichtung zum Pressformen oder Kalibrieren von Werkstücken mit schraubenlinienförmigen Konturen |
CA2196560C (en) * | 1994-08-02 | 2006-09-19 | Rainer Link | Device for producing pressed articles |
US20070157693A1 (en) * | 2006-01-10 | 2007-07-12 | Gkn Sinter Metals, Inc. | Forging/coining method |
US7854995B1 (en) * | 2004-07-14 | 2010-12-21 | Keystone Investment Corporation | High density dual helical gear |
Family Cites Families (7)
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GB1419770A (en) * | 1972-06-29 | 1975-12-31 | Metal Compacting Tools Ltd | Press tools |
IT976216B (it) * | 1972-12-29 | 1974-08-20 | Olivetti & Co Spa | Dispositivo di formatura di pezzi elicoidali mediante compattazione di materiali in polvere |
JPS5570426A (en) * | 1978-11-20 | 1980-05-27 | Toyota Motor Corp | Punching die for helical gear |
DE3324680A1 (de) | 1983-07-08 | 1985-01-24 | DAKO-Werkzeugfabriken David Kotthaus GmbH & Co KG, 5630 Remscheid | Verfahren zum feinschneiden von werkstuecken und feinschneidwerkzeug zur ausuebung des verfahrens |
US4951537A (en) * | 1988-09-29 | 1990-08-28 | Ace Technology Corporation | Apparatus for producing a blank from stock material |
JP3975715B2 (ja) | 2001-10-10 | 2007-09-12 | トヨタ紡織株式会社 | プレス成形方法及びそれに用いる装置 |
DE502009000546D1 (de) * | 2009-01-19 | 2011-05-26 | Finova Feinschneidtechnik Gmbh | Verfahren und Vorrichtung zum Feinschneiden von Werkstücken |
-
2012
- 2012-07-06 WO PCT/IB2012/053469 patent/WO2014013290A2/es active Application Filing
- 2012-07-06 MX MX2015000157A patent/MX355139B/es active IP Right Grant
- 2012-07-06 BR BR112015000346A patent/BR112015000346A2/pt not_active IP Right Cessation
- 2012-07-06 US US14/412,064 patent/US9676021B2/en active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3394432A (en) * | 1963-12-18 | 1968-07-30 | R Laurent Sa Atel | Apparatus for the production of helically toothed mechanical parts from sintered metals |
IT1137113B (it) * | 1981-03-31 | 1986-09-03 | Stama Spa | Procedimento per la tranciatura di ruote dentate a profilo elicoidale e prodotti cosi' ottenuto |
EP0528761A1 (de) * | 1991-08-17 | 1993-02-24 | Alvier Werkzeugbau Ag | Modulare Vorrichtung zum Pressformen oder Kalibrieren von Werkstücken mit schraubenlinienförmigen Konturen |
CA2196560C (en) * | 1994-08-02 | 2006-09-19 | Rainer Link | Device for producing pressed articles |
US7854995B1 (en) * | 2004-07-14 | 2010-12-21 | Keystone Investment Corporation | High density dual helical gear |
US20070157693A1 (en) * | 2006-01-10 | 2007-07-12 | Gkn Sinter Metals, Inc. | Forging/coining method |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114074142A (zh) * | 2021-11-09 | 2022-02-22 | 怀化华晨电子科技有限公司 | 一种电子真空器件制造用冲压装置 |
CN114074142B (zh) * | 2021-11-09 | 2024-01-05 | 怀化华晨电子科技有限公司 | 一种电子真空器件制造用冲压装置 |
Also Published As
Publication number | Publication date |
---|---|
BR112015000346A2 (pt) | 2017-06-27 |
WO2014013290A3 (es) | 2014-05-08 |
MX355139B (es) | 2018-04-06 |
WO2014013290A9 (es) | 2014-07-17 |
WO2014013290A4 (es) | 2014-09-12 |
MX2015000157A (es) | 2015-04-09 |
US9676021B2 (en) | 2017-06-13 |
US20150183020A1 (en) | 2015-07-02 |
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