EP1346821B1 - Machine de mesure de la position pour une presse à poudre - Google Patents

Machine de mesure de la position pour une presse à poudre Download PDF

Info

Publication number
EP1346821B1
EP1346821B1 EP03005213A EP03005213A EP1346821B1 EP 1346821 B1 EP1346821 B1 EP 1346821B1 EP 03005213 A EP03005213 A EP 03005213A EP 03005213 A EP03005213 A EP 03005213A EP 1346821 B1 EP1346821 B1 EP 1346821B1
Authority
EP
European Patent Office
Prior art keywords
measuring
ruler
arms
stamping die
powder press
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
EP03005213A
Other languages
German (de)
English (en)
Other versions
EP1346821A2 (fr
EP1346821A3 (fr
Inventor
Jürgen Hinzpeter
Ingo Schmidt
Andreas Groth
Andreas Teetzen
Thomas Pannewitz
Udo Baltruschat
Thorsten Erich
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.)
Fette GmbH
Original Assignee
Fette GmbH
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 Fette GmbH filed Critical Fette GmbH
Publication of EP1346821A2 publication Critical patent/EP1346821A2/fr
Publication of EP1346821A3 publication Critical patent/EP1346821A3/fr
Application granted granted Critical
Publication of EP1346821B1 publication Critical patent/EP1346821B1/fr
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
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/005—Control arrangements

Definitions

  • the invention relates to a method for measuring the distance of at least one upper and lower punch of a powder press according to the preamble of patent claim 1.
  • a path measurement can be achieved by detecting the travel of the piston of a hydraulic cylinder which actuates the ram. Due to the forces occurring during pressing, there is a springing of the machine frame and possibly also to a compression of the punch and the piston rod. The measured values are then no longer the actual ones. If the die has a conical shape, the die table also deflects. Therefore, a distance measurement on the hydraulic cylinders can also serve only for coarse measurement.
  • the measuring arm is to be attached to the press punches laterally angeord with the eccentric Neten vertical measuring ruler, which is designed for example as an incremental transducer, cooperates.
  • the eccentric Neten vertical measuring ruler which is designed for example as an incremental transducer, cooperates.
  • measuring errors can occur.
  • a tilting of the arm can take place or a deflection.
  • a further falsification of the measurement result can result from the fact that the ram undergoes a tilt by tilting, which is communicated to the cantilevered measuring arm.
  • the error described becomes particularly serious when, for example, in a ram a so-called center pin is guided, which is also actuated by a hydraulic cylinder and whose path is also to be measured accurately. Due to constructive circumstances, the position measuring system is to be arranged relatively far outside the center axis of the center pin. Deviations of the center pin from its central position or deformations or pivoting of the measuring arm therefore lead to particularly serious measurement errors.
  • the invention has for its object to provide a method for measuring distance for a powder press, can be compensated in the measurement error in an eccentrically arranged position measuring system.
  • At least two measuring arms are mounted on opposite sides of at least the upper or lower punch and each measuring arm cooperates with a measuring ruler.
  • the Measured variables are given to the computer, wherein a faulty measured variable is compensated by the second.
  • the invention assumes that e.g. Upon a change in the bearing of the measuring arm due to a friction on the measuring ruler of the other measuring arm accordingly undergoes a shift in the opposite direction. This is particularly the case when the two measuring arms are formed by a common lever, the measuring rulers are arranged on diametrically opposite sides of the ram.
  • a displacement of a measuring arm can also be done by the measuring arms are guided by a linear vertical guide. While the guides are intended to help prevent displacement of the measuring arms, they can not always do so. Again, the displacement of the measuring arm on one side of the ram would lead to an opposite displacement of the measuring arm on the opposite side.
  • a powder press 10 can be seen, which has a frame 12.
  • An upper plate 14 of the frame supports a hydraulic cylinder 16, the piston 18 actuates an upper punch 20.
  • a lower plate 22 of the frame 12 supports a lower hydraulic cylinder 24, which operates a lower punch 26, with the interposition of a box-shaped member 28, which will be discussed below.
  • a die plate 30 is fixedly mounted in the frame 12 and receives in a bore a die 32, with which upper and lower punches 20, 26 cooperate, as shown, for the production of a compact 34th
  • a center pin 36 which is actuated by a hydraulic cylinder 38 extends.
  • the hydraulic cylinder 38 is supported on the bottom of the box-shaped component 28. It serves to produce a central hole in the compact 34.
  • an arm 40 or 42 is connected on diametrically opposite sides, which interact with a vertical measuring ruler 44 and 46, respectively, as known per se. It is e.g. around known per se incremental transducer.
  • the measuring rulers 44, 46 are firmly connected to the die plate 30. With the help of the measuring rulers, it is possible to determine the exact path of the upper punch 20 relative to the die plate 30.
  • a cross bar 56 is connected within the box-shaped member 28, which forms a measuring arm on opposite sides of the center pin 36, comparable to the measuring arms 40, 42 and 48,50. she cooperate with measuring rulers 58 and 60 within the component 28.
  • linear vertical guides 62 and 64 are arranged on opposite sides on both sides of the center pin 36 and the hydraulic cylinder 38. They serve to stir the movement of the measuring arms of the rod 56 so that it moves in an exact horizontal plane with the center pin 36, so that the measuring rulers 58, 60 determine the exact way.
  • a displacement of the measuring arms can occur, as in Fig. 2 is shown.
  • a measuring system for example, the right in Fig.
  • a displacement of the right measuring arm results in a difference between the distance traveled 70 and the measured distance 72.
  • the difference is attributed to the tilting (exaggerated) of the center pin 36.
  • the measured path 74 is greater than the actually traveled path 76.
  • this compensation principle also for the measuring systems for the upper punch 20 and the lower punch 26, as they are in Fig. 1 are shown, can be applied.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • A Measuring Device Byusing Mechanical Method (AREA)
  • Presses And Accessory Devices Thereof (AREA)
  • Control Of Presses (AREA)
  • Press Drives And Press Lines (AREA)
  • Sampling And Sample Adjustment (AREA)

Claims (3)

  1. Procédé de mesure de la position d'au moins un poinçon supérieur et poinçon inférieur (20, 26) d'une presse à poudre (10), dans lequel le poinçon supérieur et le poinçon inférieur (20, 26) sont actionnés par un piston hydraulique (16, 24) et coopèrent avec une matrice (32) d'un support de matrice (30), dans lequel un bras de mesure en porte-à-faux latéral (40, 42 ; 48, 50, 56) sur le poinçon supérieur et poinçon inférieur (20, 26) coopère avec une règle de mesure verticale (44, 46 ; 52, 54) associée sur un bâti (12) pour la presse à poudre (10) et les résultats de mesure sont transmis dans un calculateur de machine, caractérisé en ce qu'au moins deux bras de mesure (40, 42 ; 48, 50, 56) à des côtés opposés sur au moins le poinçon supérieur et le poinçon inférieur (20, 26) coopèrent respectivement avec une règle de mesure (44, 46 ; 52, 54) et le calculateur compense une grandeur de mesure incorrecte sur une règle de mesure par la seconde grandeur de mesure sur l'autre règle de mesure.
  2. Procédé selon la revendication 1, caractérisé en ce qu'au moins trois systèmes de mesure constitués d'un bras de mesure et d'une règle de mesure sont disposés sur le poinçon supérieur et le poinçon inférieur avec un espacement périphérique égal.
  3. Procédé selon l'une des revendications 1 à 2, caractérisé en ce que les bras (56) sont guidés dans un guidage (62, 64) linéaire vertical et les guidages (62, 64), règles de mesure (58, 60) et les bras d'un système de mesure constitué d'un bras de mesure et d'une règle de mesure sont disposés dans un plan.
EP03005213A 2002-03-20 2003-03-08 Machine de mesure de la position pour une presse à poudre Expired - Lifetime EP1346821B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10212315A DE10212315B4 (de) 2002-03-20 2002-03-20 Wegmeßsystem für eine Pulverpresse
DE10212315 2002-03-20

Publications (3)

Publication Number Publication Date
EP1346821A2 EP1346821A2 (fr) 2003-09-24
EP1346821A3 EP1346821A3 (fr) 2004-05-06
EP1346821B1 true EP1346821B1 (fr) 2010-01-13

Family

ID=27771442

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03005213A Expired - Lifetime EP1346821B1 (fr) 2002-03-20 2003-03-08 Machine de mesure de la position pour une presse à poudre

Country Status (4)

Country Link
US (1) US20030180408A1 (fr)
EP (1) EP1346821B1 (fr)
AT (1) ATE454978T1 (fr)
DE (2) DE10212315B4 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013113665B4 (de) 2013-12-06 2015-09-03 Fette Compacting Gmbh Presse
DE102016120195A1 (de) * 2016-10-24 2018-04-26 Dorst Technologies Gmbh & Co. Kg Presseneinrichtung

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4184827A (en) * 1975-12-16 1980-01-22 General Electric Company Apparatus for monitoring and controlling the operation of a dual platen press
DE2924704A1 (de) * 1979-06-19 1981-01-15 Dorst Keramikmasch Einrichtung zur festlegung der hoehe von pressteilen an einer presse, insbesondere zum pressen von pressteilen aus pulverfoermigem ausgangsmaterial
DE3919821C2 (de) * 1989-06-15 1994-04-07 Mannesmann Ag Verfahren und Vorrichtung zum Herstellen von maßhaltigen Preßlingen
DE3930475A1 (de) * 1989-09-12 1991-03-14 Dorst Masch & Anlagen Presse zur herstellung masshaltiger presslinge aus pulverfoermigem material
JPH03178412A (ja) * 1989-12-07 1991-08-02 Mazda Motor Corp インモールドコート方法
DE4428842C1 (de) * 1994-08-02 1996-01-18 Mannesmann Ag Vorrichtung zur Herstellung von Preßkörpern
JPH11179599A (ja) * 1997-12-15 1999-07-06 Aida Eng Ltd サーボプレス機械のスライド位置制御装置
DE19846210A1 (de) * 1998-10-07 2000-04-13 Dorst Masch & Anlagen Presse zum Herstellen von Formkörpern
DE19919693C2 (de) * 1999-04-30 2001-08-23 Fette Wilhelm Gmbh Verfahren zur Positionsbestimmung eines Preßstempels einer Pulverpresse
JP2000343283A (ja) * 1999-05-31 2000-12-12 Yamada Dobby Co Ltd ねじプレス機のスライド制御装置

Also Published As

Publication number Publication date
US20030180408A1 (en) 2003-09-25
ATE454978T1 (de) 2010-01-15
EP1346821A2 (fr) 2003-09-24
EP1346821A3 (fr) 2004-05-06
DE10212315B4 (de) 2004-04-29
DE50312335D1 (de) 2010-03-04
DE10212315A1 (de) 2003-10-16

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