JPS5853316A - Zero adjusting device for roll crown of multistage cluster rolling mill - Google Patents

Abstract

PURPOSE:To automate zero adjusting operation and to improve controllability for shapes by operating the rotating angles of eccentric sleeves provided to split backup rolls from the differences between the crowns of a plate after rolling and reference values, and changing said angles by means of servocontrol mechanisms. CONSTITUTION:In multistage cluster rolling mills, first a reference material 13 to be rolled is used and said material is rolled. The detected values of a detector 26 for plate crowns are stored as reference values in a storage device 27. When the profiles of rolls change on starting of prescribed rolling, an arithmetic device 28 for zero adjustment is operated to calculate the rotating angles of motors 24 from the differences between the detected values of the detector 26 and the reference values of the device 27. The signals thereof as control signals are outputted to a controller 29 for the rotating angles of the respective motors. The motors 24 are started by said output signals and the motors 24 are rotated by prescribed rotating angles by the outputs of a detector 25 for rotating angles and the outputs of the device 28. As a result, the angles of the eccentric sleeves 15 of split backup rolls 1, 2 are changed and the prescribed profiles of the rolls are restored.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a roll roll zero adjustment device for a multi-stage cluster rolling mill.

To explain a conventional multi-stage cluster rolling mill from FIG. 1 (I)K, (1) to (Iz are upper and lower cluster roll groups,
131 is a rolled material, and among these cluster rolls, (
1) +21+31141 is a divided backup roll that divides the trunk into multiple parts in the axial direction, f5) f6) is a backup roll that does not divide the trunk, (force (81 (9) (I
I is the intermediate roll, α1) (12+ is the work roll. Figure 1 (loss) is another example of a conventional multi-stage cluster rolling mill, the upper part is the same as Figure 1 (1), and the lower part is the normal The structure is similar to that of the four-high rolling mill shown in Fig. 1 (I). 0 (A) in Figure 2 is a divided backup roll (1) divided into multiple parts in the axial direction.
- (4) body part, 1 second passes through each body part α4 of the split two-piece up roll (11 to (4) axis part, (151 is between coaxial part U and each of the above body parts α4) (17) is a plurality of load supporting members interposed between the frame 09 and each of the eccentric sleeves 09; f2U)
With the ring, the load applied to each body part θ is transmitted to the housing via the eccentric sleeve Q51 and the load supporting member Q7) frame 0, and is supported by the housing. Also, the side shown in Figure 2.6 is the eccentric sleeve (1
The worm that meshes with the gear provided on the outer periphery of the flange portion of No. 51, Qυ is the axis of the same worm No. 06), c! 4 is the bevel gear, (
23) is a speed reducer, and C241 is a drive motor.
, change the angle of the eccentric sleeve Q51, change the extrusion amount of each body part 041 (see Fig. 4), and set the roll crown (roll profile) of the divided backup rolls (11 to (4)). It has become.

In this type of multi-stage cluster rolling mill, as the body (141 eccentric sleeve (151 bearing C201, etc.) wears out, the roll profile changes, so it is necessary to return it to the original roll profile and perform an operation. However, in the multi-stage cluster rolling mill shown in Figs. 1 to 4, it is difficult to determine which parts of the eccentric sleeves (151 bearings, etc.) arranged in the axial direction are separated from each other, and how far apart they are. The degree to which the motor (241) should be driven cannot be determined unless the divided backup rolls (11 to (4) are disassembled and the amount of wear measured), which is time-consuming and requires online In addition, unless the split backup roll fil ~ (4) is disassembled and the amount of wear measured, it is not possible to return to the original set profile, resulting in a problem of extremely poor shape controllability. .

The present invention addresses the above-mentioned problems, and includes a divided backup roll whose body is divided into a plurality of parts in the axial direction to enable adjustment of the roll crown, and a divided backup roll that penetrates each body of the divided backup roll. In a multi-stage cluster rolling mill that has a plurality of eccentric sleeves interposed between the shaft part and adjusts the roll crown of the divided backup roll by changing the angle of each eccentric sleeve, a plate crown detector that detects the plate crown after rolling; a reference plate crown storage device that stores the reference plate crown when rolled under standard rolling conditions; and an output of the reference plate crown memory drawing and the plate crown. A roll comprising: a character calculation device that calculates the rotation angle of each of the eccentric sleeves from the difference between the output of a detector; and a servo mechanism that changes the angle of each eccentric sleeve based on the output of the same character calculation device. Regarding the crown zero adjustment device, its purpose is not only to eliminate the time and effort required for manual operation, but also to enable it to be made online. Another object of the present invention is to provide an improved roll crown shaping device that can improve shape controllability.

As described above, the present invention provides a divided backup roll whose body is divided into a plurality of parts in the axial direction to enable adjustment of the roll crown, and each body of the four-part cut-up roll and a shaft passing through it. In a multi-stage cluster rolling mill that has a plurality of eccentric sleeves interposed between the rollers and adjusts the roll crown of the divided backup roll by changing the angle of each eccentric sleeve, a rolling mill installed at the exit 111j of the rolling mill A plate crown detector that detects the plate crown of the plate, a reference plate/crown storage device that stores the reference plate crown when rolled under standard rolling conditions, and an output of the reference plate crown memory device and the plate crown detector. It is composed of a character calculation device that calculates the rotation angle of each eccentric sleeve from the difference between the output and a servo mechanism that changes the angle of each eccentric sleeve based on the output of the same character calculation device. , it is possible to perform manual operation without measuring the amount of wear on the body, eccentric sleeve, bearings, etc., which eliminates the time and effort required for manual operation, and can be done online.

Furthermore, since the character operation is automated using a plate crown detector, a reference plate crown memory device, a character calculation device, and a servo mechanism, shape controllability can be significantly improved.

Next, the roll crown zero adjustment device of the multi-stage cluster rolling mill of the present invention will be explained with reference to an embodiment shown in FIG.
+mQnQ31~08 (2υ~Q41 are the same parts as above, (2!9 is the rotation angle detector of the motor (24), (26
) is a plate round detector installed on the exit side of the rolling mill to detect the plate crown after rolling, and (27) is a reference plate crown memory device, and the same reference plate crown memory device (7!η is a division −
Start the motor (2) when the thick-up roll (1+!21 trunk I eccentric sleeve 09 earring (2), etc.) is not worn, and change the eccentric sleeve (190 angle) to set the standard roll profile. Then, the standard rolling conditions (roll dimensions, rolling reduction,
rolling speed, tension, etc.), and the detected value obtained by the plate crown detector (26) at that time is stored as a reference plate crown value. In addition, the L2 barrel is the main key calculation device, and the example of the same character calculation device is the reference plate crown storage device t.
&71 stores the reference plate crown value, the plate crown value of the rolled material 0 detected by the plate crown detector (support) during rolling and the standard stored in the reference plate crown storage device (27). The rotation angle of the motor (2(a)) is calculated from the difference with the plate crown value, and this calculation is performed by manual input by the operator. In addition, (2□□□ is a motor angle control device that controls the rotation angle of motor I2 using the output of the same character calculation system ladder ((1)) and the output of the motor rotation angle detector C2Fd. There are as many devices (c) as there are motors (2 (a) (eccentric sleeves (15)).

Note that the symbol c'taea in the figure is an output from the master key calculation device @ to another motor rotation angle control device.

Next, the operation of the main adjusting device of the multi-stage cluster rolling mill will be explained. Body round eccentric sleeve (15) Bearing (2α etc. has no wear) Split backup roll (1) (2)
(or +31 (41) when the dimensions of each part are known, start each motor C1!41, and each eccentric sleeve 0
9 to set the standard roll profile (see Figure 4), then roll the standard rolled material 0 under the standard rolling conditions, and then check the detected value obtained by the plate crown detector (c). The reference plate crown value is stored in the reference plate crown memory cap (2η).Rolling starts from this state, but due to long rolling, the body side eccentric sleeve A51 bearing (2υ etc.) wears out and the roll profile changes. When the value changes, the main key arithmetic unit 6 (c) is activated by the operator's manual input (to).

At this time, the dojikun calculation device (c) is the plate crown detector (2
The rotation angle of the motor C1!41 is calculated from the difference between the rolled material 030 version crown value detected by 0 and the reference plate crown value stored in the reference plate crown storage device (2), and the control signal obtained as a result is calculated. (431) to (c)) are output to each motor rotation angle control device el. At this time, the motor rotation angle control device t (291 is the motor C24) is started, and thereafter the output of the rotation angle detector (c) and the main key calculation device 11 (
2. The motor (to) is rotated by a predetermined rotation angle by the second output.

As a result, the role profile of the divided backup role fll+21 is returned to the initially set role profile.

In this way, by disassembling the split backup roll l]lf2+ (or In addition, it is possible to omit the time and effort that was previously required, and it can be made online.In addition, the plate crown detector (a), the reference plate crown memory device (2 forces, the main key calculation unit fll, and the servo mechanism 00 to [available] (2)
Since the character manipulation is automated using the above, shape controllability can be significantly improved.

Although the present invention has been described above with reference to embodiments, it goes without saying that the present invention is not limited to such embodiments, and that various design modifications can be made without departing from the spirit of the present invention. . For example, in the above-mentioned embodiment, the rotation of two centimeters is transmitted to the eccentric sleeve 09 via the shaft Cυ worm 06 of the reducer sun gear, but the movement of the hydraulic cylinder is transmitted to the eccentric sleeve (151) via the rack and pinion. You can also do this.

Also, the pick-up rolls (1) to (4) are divided into 5 parts, and three of them are provided with eccentric sleeves Q5), but the number of divisions of the pick-up rolls and the number of eccentric sleeves are as follows. Not limited.

[Brief explanation of the drawing]

Fig. 1 (1) (n) is a side view showing a conventional multi-stage cluster rolling mill, Fig. 2 is a longitudinal sectional front view showing a split backup roll of the same multi-stage cluster rolling mill, and Fig. 6 is a side view showing the split backup roll of the multi-stage cluster rolling mill. FIG. 4 is an explanatory diagram showing a roll crown, and FIG. 5 is a system diagram showing an embodiment of a roll crown zero adjustment device for a multi-stage cluster rolling mill according to the present invention. (1) ~ f4) --One division backup roll, 0 blurs-
1-Torso, 09-11 Eccentric Slino, αe-(2■(2
9) ---Servo mechanism, (26+-11 plate crown detector, (5)-m-reference plate crown storage device, (28)
--One-zero word calculation device. Sub-Agent Patent Attorney Shigeru Okamoto 2 persons Figure 1 [Mon (n) Figure 2 6]

Claims (1)

[Claims] A split backup roll whose trunk is divided into multiple parts in the axial direction to enable adjustment of the roll crown, and a plurality of eccentric sleeves interposed between each trunk of the split backup roll and the shaft passing through it. A plate crown detector for detecting the plate crown after rolling, provided on the exit side of the rolling mill, in a multi-stage cluster rolling mill, which has a multi-stage cluster rolling mill that adjusts the roll crown of the divided backup roll by changing the angle of each eccentric sleeve. , a reference plate crown memory device that stores the reference plate crown when rolling is performed under standard rolling conditions, and a rotation of each eccentric sleeve based on the difference between the output of the reference plate crown memory device and the output of the plate crown detector. 1. A roll crown zero adjustment device for a multi-stage cluster rolling mill, comprising a zero adjustment calculation device that calculates an angle, and a servo mechanism that changes the angle of each of the eccentric sleeves based on the output of the zero adjustment calculation device.