The invention relates to a driving unit for driving two substantially parallel beams (2,6) away or towards each other, comprising:

- a first beam (6) of the substantially parallel beams and a second beam (2);

- and driving means at least arranged between the first beam (6) and the second beam (2);

wherein the driving means are substantially arranged inside the first beam (6).

The present invention provides a linear motor mounted press machine which uses a boosting mechanism to enable machining with a greater press tonnage using a press driving source with relatively low power and which, for machining with a smaller press tonnage, enables efficient high-speed machining. A linear motor mounted press machine includes a boosting mechanism 10 having an output portion that performs a rectilinear reciprocating operation, a first linear motor 11 coupled to an output portion of the boosting mechanism 10, a second linear motor 12 having an output shaft that drives a press tool 6 forward and backward, and a coupling switching mechanism 13. The coupling switching mechanism 13 releasably couples the output shaft of the second linear motor 12 to the output portion of the boosting mechanism 10. The boosting mechanism 10 is a toggle-type link mechanism or the like. A servo motor and a crank mechanism or the like may be used in place of the first linear motor 11(Fig.1).

Erfindungsgemäß werden Pressen-Antriebsmodule vorgeschlagen, die einen vereinheitlichten Pressenentwurf gestatten. Die Pressen einer Baureihe werden mit immer gleichen Pressenantriebsmodulen ausgestattet, wobei die Presskraft der Pressen lediglich durch Anpassung der Anzahl der Pressen-Antriebsmodule variiert wird. Die Pressen-Antriebsmodule enthalten jeweils zwei Antriebseinrichtungen, die parallel oder seriell zusammenwirken und unterschiedliche Kennlinien aufweisen. Insbesondere weisen sie unterschiedliche maximale Fahrgeschwindigkeiten und unterschiedliche Maximalkräfte auf. Auch können sie hinsichtlich ihrer Positionierbarkeit und Wegauflösung unterschiedlich gestaltet sein. Dieses Konzept gestattet nicht nur eine Vereinheitlichung von Pressen unterschiedlicher Leistungsklassen innerhalb einer Baureihe sondern darüber hinaus die weitgehend freie Festlegung von Weg/Zeit-Kurven der Stößel und somit letztendlich auch eine freiere Gestaltung von Werkstücken, insbesondere Karosserieteilen.

In this invention, there is disclosed a force multiplier being comprised of a base supporting member (21 a driving lever (22) being supported swingably by a first pivot means (A) on said base supporting member which is reciprocated about the first pivot means through a predetermined angle (x) being defined between first and second positions thereof, a driven lever (23) one end of which is pivotably coupled to the free end of the driving lever (22) by a second pivot means (B), a follower (F) being coupled to the other end of the driven lever which receives a multiplied force and transmits it to other member, said follower (F) being supported remote from the second pivot means (B) by a distance substantially equal to the distance defined between the first and second pivot means, and a guide means (24, 25, 26) for guiding the follower (F) coupled to the driven lever which makes the driven lever (23) swing about the second pivot (B).

In this invention, there is disclosed a force multiplier being comprised of a base supporting member (21 a driving lever (22) being supported swingably by a first pivot means (A) on said base supporting member which is reciprocated about the first pivot means through a predetermined angle (x) being defined between first and second positions thereof, a driven lever (23) one end of which is pivotably coupled to the free end of the driving lever (22) by a second pivot means (B), a follower (F) being coupled to the other end of the driven lever which receives a multiplied force and transmits it to other member, said follower (F) being supported remote from the second pivot means (B) by a distance substantially equal to the distance defined between the first and second pivot means, and a guide means (24, 25, 26) for guiding the follower (F) coupled to the driven lever which makes the driven lever (23) swing about the second pivot (B).

The invention relates to a press, more particularly for cutting and moulding miniature components, with a reciprocating die (9).

In order to provide a small and compact press, which can be economically manufactured, the drive of the die (9) is effected by at least one piezoactor (18, 19).

In addition, a more particularly hydraulic transmission device (14) is arranged between the piezoactor (18, 19) and the die (9).

The invention relates to a press, more particularly for cutting and moulding miniature components, with a reciprocating die (9).

In order to provide a small and compact press, which can be economically manufactured, the drive of the die (9) is effected by at least one piezoactor (18, 19).

Ein Behälter (10) und ein Verfahren dienen zum Behandeln von Maische (71). Der Behälter (10) weist einen Maischeraum (30) und mindestens einen von dem Maischeraum (30) mittels eines Siebes (21, 26) getrennten Saftraum (23, 28) auf. Das Sieb (21, 26) ist im wesentlichen vertikal angeordnet und der Maischeraum (30) ist prismatisch ausgebildet. Ein Preßgewicht (60), dessen horizontaler Querschnitt im wesentlichen dem horizontalen Querschnitt des Maischeraums (30) entspricht, ist in den Maischeraum (30) in vertikaler Richtung (85) verfahrbar.