US 12,420,329 B2
Forging machine with prestressed concrete machine frame
Lothar Bauersachs, Weidhausen (DE); and Harald Barnickel, Coburg (DE)
Assigned to LANGENSTEIN & SCHEMANN GMBH, (DE)
Filed by Langenstein & Schemann GmbH, Coburg (DE)
Filed on Oct. 7, 2022, as Appl. No. 17/961,780.
Claims priority of application No. 10 2021 126 126.0 (DE), filed on Oct. 8, 2021.
Prior Publication US 2023/0110046 A1, Apr. 13, 2023
Int. Cl. B30B 15/04 (2006.01); B21J 9/10 (2006.01); B21J 13/04 (2006.01)
CPC B21J 9/10 (2013.01) [B21J 13/04 (2013.01); B30B 15/04 (2013.01); B30B 15/042 (2013.01)] 23 Claims
OG exemplary drawing
 
1. A forging machine for forging workpieces, comprising:
a) a first tool carrier and a second tool carrier,
b) a drive system for driving at least the first tool carrier in a working movement along a, preferably vertical, central axis (M) towards or away from the second tool carrier,
c) and a machine frame on or at which the drive system is held and preferably also the second tool holder is held,
d) wherein the machine frame is formed at least predominantly of a concrete prestressed with prestressing elements,
e) wherein the machine frame comprises a frame base and a frame support connected to the frame base and extending upwards from the frame base, and a cross-member connected with the frame support and arranged on a side of the frame support facing away from the frame base,
f) wherein longitudinal prestressing elements are provided which extend at least predominantly parallel to the central axis (M) and each extend through the frame support and through the frame base and also through the cross-member,
g) wherein transverse prestressing elements are provided both in the frame base and in the cross-member, each of which extends at least predominantly orthogonal to the longitudinal prestressing elements,
h) wherein the longitudinal prestressing elements and the transverse prestressing elements are each provided with prestressing anchors for the application of a respective associated prestressing force or bias, and
i) wherein the prestressing anchors are each arranged on an outer surface of the frame base or the cross-member
i) wherein the transverse prestressing elements in the frame base are arranged in more than two planes, which planes are directed perpendicularly to the central axis (M),
k) wherein the transverse prestressing elements in the cross-member are arranged in more than two planes, which planes are directed perpendicularly to the central axis (M),
l) wherein the transverse prestressing elements in one or each of the planes extend and cross at least predominantly orthogonally or in at least approximately orthogonal preferred directions to the transverse prestressing elements in at least one adjacent plane, and
m) wherein at least one longitudinal prestressing element passes through an intermediate space formed between two transverse prestressing elements in a respective first one of the planes and two transverse prestressing elements in a respective plane adjacent to the first plane and wherein at least one transverse prestressing element in a first one of the planes passes through an intermediate space formed between two transverse prestressing elements in two respective planes adjacent to the first plane and two longitudinal prestressing elements.