Cold-pilger rolling mill
A format and rolling mill technology, applied in the direction of metal rolling stands, metal rolling mill stands, metal rolling, etc., can solve the problems of long time roll replacement, long downtime of pilger mills, high cost, and reduce operation interruption, The effect of increasing facility productivity, improving accuracy and precision
Active Publication Date: 2018-08-21
SANDVIK MATERIALS TECH DEUTLAND
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- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0013] However, changing the rolls takes a long time and results in prolonged pilger mill downtime and higher costs
Method used
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Embodiment Construction
[0064] exist figure 1 In the figure, the structure of a pilger rolling mill according to the invention is shown in a schematic side sectional view, in which features not essential for understanding have been omitted. The shown pilger mill comprises a roll stand 1 with rolls 2, 3, two drive gears 6 arranged on the shaft of the lower roll 3, two racks 5 each fastened to a rack 4 , Roll mandrel 7 and feed pressing slide seat 8 through fixed-hole type. The drive gear 6 is not visible here, since one of the two is covered by the lower roll 3 , while the other is omitted from the illustration for the sake of clarity. figure 1 The tooth bar 5 and the rack frame 4 are not drawn in the same way.
[0065] In the illustrated implementation, even if it is not possible to figure 1 As seen in , the pilger mill also has two rack racks 4 arranged mirror-symmetrically with respect to a reference plane 11 extending perpendicularly to the axes of the rolls, the rack racks having fixed racks f...
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Abstract
The present invention relates to a pilger rolling mill for shaping a bloom into a tube, comprising a first roll stand (1) mounted to be linearly moveable in a movement direction. Two rollers (2, 3) for shaping the bloom into the tube are rotatably mounted on shafts on the roll stand (1) in such a way that one of the rollers (2, 3) is arranged on a shaft with a drive gear (6). The drive gear (6) engages in a stationary rack (5) which is secured on a rack holder (4) so that a translational movement of the roll stand (1) due to the engagement of the drive gear (6) in the rack (5) causes a rotational movement of the drive gear (6) and thus also of the roller (2, 3) arranged on the shaft of the drive gear (6), and also of the other of the two rollers (2, 3) in the opposite direction. The roll stand (1) is connected to a crank drive so that a rotational movement of a drive motor is converted via a push rod into an oscillating translational movement of the roll stand (1) during operation of the pilger rolling mill. In contrast, the rack holder (4) according to the invention enables the provision of a pilger rolling mill that can be adjusted in a simple and cost-effective way to the tube diameter to be produced in the finish-rolled tubes, so that the production of tubes with different diameters is possible in the same pilger rolling mill. For this purpose, the rack (4) is configured insuch a way that the first roll stand (1) is interchangeable with a second roll stand with a second dimension that differs from the first dimension. By adjusting the roll stand to the required tube diameter of the finish-rolled tubes, said tubes have dimensions of improved accuracy and precision after their production process.
Description
technical field [0001] The invention relates to a pilger mill for the transformation of tube blanks into tube parts, the pilger mill having a first roll stand supported in a linearly movable manner in the direction of motion, wherein on the roll stand The two rolls used to transform the tube blank into a tube are rotatably supported on the shaft, wherein one of the rolls is arranged on a shaft with a drive gear, and wherein the drive gear meshes into a stationary rack , the rack is fastened to the rack housing in such a way that the translational movement of the roll housing causes the rotational movement of the drive gear and the rolls, and the pilger mill has a crank linkage connected to the roll housing, the crank During operation of the Pilger mill, the linkage converts the rotational movement of the drive motor into a reciprocating translational movement of the roll stand via push rods. Background technique [0002] In order to produce precise metal tubes, in particula...
Claims
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IPC IPC(8): B21B21/00
CPCB21B31/028B21B31/07B21B21/005
Inventor 托马斯·弗罗伯泽克里斯托弗·赫德瓦尔
Owner SANDVIK MATERIALS TECH DEUTLAND