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US 7,237,417 B2Granted
Roll preshaping
AssigneeMuller Weingarten AG
InventorAxel Wittig
Life of this patent
Estimating the term…
Abstract
A preshaping method for massive forming processes is proposed in which a fixed blank is deformed by at least one roll moving continuously forward along a predetermined contour.
Claims19
A method of producing a formed part from a blank for subsequent massive forming comprising:
- (a) holding the blank within a frame with turning tongs;
- (b) providing at least one movable contour roll in direct contact with the blank;
- (c) providing at least one fixed profile insert directly contacting the movable contour roll;
- (d) displacing the contour roll in a direction along the longitudinal axis of the blank;
- (e) plastically deforming the blank in a continuously progressive manner to provide the formed part;
- (f) displacing the turning tongs in a direction opposite to the contour roll displacement while plastically deforming the blank;
- (g) rotating the formed part about its longitudinal axis;
- and
- (h) repeating steps (d), (e) and (f) at least once to increase the forming ratio of the formed part.
6 more elements
A device for producing a formed part from a blank for subsequent massive forming comprising:
- at least one movable contour roll in direct contact with the blank for producing the formed part along a path in the longitudinal and transverse directions of the formed part;
- at least one fixed profile insert directly contacting the movable contour roll;
- and
- turning tongs for rotating one of the blank and the formed part about its longitudinal axis,
- wherein the turning tongs move in a direction opposite to a forming pass direction of the movable contour roll during a forming pass.
2 more elements
A device for producing a formed part from a blank for subsequent massive forming comprising:
- a frame having a closed end and an open end located opposite the closed end;
- a stop plate mounted at the closed end of the frame, the stop plate being arranged such that it supports a first end of one of the blank and the formed part;
- at least one movable contour roll in direct contact with the blank for producing the formed part along a path in the longitudinal and transverse directions of the formed part;
- at least one fixed profile insert directly contacting the movable contour roll, the fixed profile insert being mounted within the frame;
- and
- turning tongs extending out of the open end of the frame for rotating and supporting a second end of one of the blank and the formed part about its longitudinal axis,
- wherein the turning tongs move in a direction opposite to a forming pass direction of the movable contour roll during a forming pass.
4 more elements
Dependencies are inferred from the claim text.