JP2548933Y2 - Roll grinding equipment - Google Patents

Description

[Detailed description of the invention]

[0001]

In the present invention, a roll, such as a vertical roll used in a rolling mill, that is rotatably disposed on a support shaft is disposed on a support such as a chock (bearing box). The present invention relates to a roll grinding device for grinding the peripheral surface of the roll while keeping the rolled state.

[0002]

2. Description of the Related Art Conventionally, rolls such as work rolls provided in a rolling mill are removed from a rolling mill while being provided in a chock (also referred to as a bearing box or a support). The roll is disassembled, the roll is taken out, and the roll alone is processed into a processing machine such as a lathe or a grinder (in this specification,
(Generally referred to simply as a grinding device), and the roll end is gripped by the drive device and rotated to perform cutting, grinding, or polishing. However,
In this way, the rolls provided on the chock are removed from the rolling mill together with the chock, and further the chock is disassembled, and the roll is taken out from the chock, and the roll surface is cut or ground, and smooth processing such as polishing (in this specification) (Just grinding) requires a lot of man-hours and time for disassembly and assembly.

In view of such a situation, in the case of a roll such as a work roll having a support shaft integrally formed with the roll, as shown in FIG. The roll 1 with the chock attached is removed from the rolling mill, and the roll 1 with the chock attached is placed on a pedestal 10 provided in a grinding device. The roll 1 on the pedestal 10 is rotated together with the pedestal 10 on a rotating shaft. A roll grinding apparatus has been provided in which the grinding is performed by rotating the grinding wheel 11 around the grinding wheel 6 'and bringing the grinding wheel into contact with the grinding wheel (JP-A-63-84856).

[0004]

In the case of the roll grinding apparatus disclosed in Japanese Patent Application Laid-Open No. 63-84856, the roll is rotated by the grinding apparatus because the roll and the support shaft are integrated. Is separately provided, and the support shaft of the roll is gripped by the chuck of the drive device, whereby the roll to be ground can be rotated to perform the grinding.

[0005] However, in the case of a roll in which the roll is rotatably mounted on a support shaft such as a vertical roll of a rolling mill, this is because the roll is rotatably mounted on the support shaft. Therefore, when grinding, it is not possible to apply a rotational force necessary for the grinding to the roll.

For this reason, in the case of the vertical roll in which the roll is rotatably disposed on the support shaft as described above, still,
As before, the chock is removed from the rolling mill with the chock attached, then the chock is disassembled, the roll is removed from the support shaft, and only the roll is attached to a grinding machine such as a lathe for grinding. I had to.

As another method, a gear may be formed on the side surface of a vertical roll of a rolling mill, and the vertical roll may be driven and rotated by using a pinion gear built in a chock. Although it can be realized in the case of a simple vertical roll, it cannot be applied to a very large number of existing vertical rolls already used. Further, in a configuration in which the pinion gear is not formed on the chock (support), such a method cannot solve the problem.

The present invention has been made in view of the above situation, and includes a roll, such as a vertical roll with a chock, including a conventional roll, which is rotatably disposed on a support shaft.
It is an object of the present invention to provide a roll grinding apparatus that can easily rotate the roll by applying rotation to the roll while being provided on the support.

[0009]

A roll grinding device according to the present invention is a roll grinding device capable of grinding a roll peripheral surface while a roll is rotatably disposed on a support. A base disposed in close proximity to the roll to be ground, and a roll drive roller disposed on the base and having a peripheral surface in contact with the peripheral surface of the roll and being at least excited during grinding. Grinding means (meaning means including cutting, grinding and polishing) disposed on the base and capable of moving close to and away from the peripheral surface (ground surface) of the roll. And

[0010]

According to the roll grinding apparatus of the present invention, when grinding a roll rotatably disposed on a support shaft, such as a vertical roll of a rolling mill, the base of the grinding apparatus is used. In the vicinity of the roll disposed on the support, disposed so that the peripheral surface of the roll drive roller is in contact with the peripheral surface of the roll,
If the roll drive roller is driven in this state, the roll drive roller can rotate the roll by the attraction (attraction) of the magnet. Therefore, if the roll, which is rotatably disposed with respect to the support shaft, is fixed to a predetermined position in a state where the roll is disposed on the support, the roll can be fixed on the roll surface as it is. Stable rotation can be given by changing the attraction (magnetic force) of the magnet according to the roll surface properties, such as the grease or other oil adhered. In addition, even if the roll has some eccentricity or unevenness, a more stable rotation can be given by adopting a roll drive roller support structure in which the approach / separation movement with respect to the roll is free for the roll drive roller. .

In the above state, the grinding means is
By contacting the peripheral surface of the roll to be ground, a desired peripheral surface of the roll can be ground.

As described above, it is possible to simply grind the roll provided on the supporter in the same state by simply fixing the roll at a predetermined position.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

1 and 2 are a plan view and a front view conceptually showing the configuration of a vertical roll grinding apparatus according to an embodiment of the present invention.

1 and 2, reference numeral 1 denotes a vertical roll of a rolling mill rotatably disposed on a support shaft 8 of the chock A via a bearing 9. The vertical roll 1 is disposed on the chock A. It is removed from the rolling mill in the state as it is, and mounted and fixed on a platen (not shown). In the drawing, reference numeral 2 denotes a base of the grinding apparatus according to the present embodiment. On the base 2, a roll driving roller 3 for driving the vertical roll 1 is provided in a direction indicated by an arrow X in FIG. The support shaft of the roll driving roller 3 is supported so as to be able to move close to and away from it. The roll driving roller 3 has a peripheral surface
The roller 3a contacts the peripheral surface of the vertical roll 1 and is excited by the roll driving roller 3 so that the vertical roll 1 can be rotated.

In this embodiment, a plurality of electromagnets are provided so that the excitation is performed electrically only when the vertical roll 1 is driven. However, as another method, this roll drive is used. A configuration in which permanent magnets are embedded in the rollers 3 to excite them may be used.

The magnetic force to be excited (attraction force) may be any strength that can drive the vertical roll 1 against the grinding resistance. If the strength is too strong, the roll drive roller 3 is driven. The power of the electric motor to be used becomes unnecessarily large, and if it is too weak, there is a disadvantage that the vertical roll 1 cannot be rotated.

The roll driving roller 3 is configured to be driven by an electric motor 5 on a base 2 which is disposed close to the roll driving roller 3 via a chain 4a and a sprocket 4b.

Further, on the base 2, the vertical roll 1 can be moved toward and away from the vertical roll 1 side (left side in FIG. 1) and can be moved in the longitudinal direction of the vertical roll 1 (axial direction; vertical direction in FIG. 2). A cutting tool (grinding means) 6 is provided. The cutting tool 6 is configured to be detachable from the holding bracket 7.

The vertical roll grinding apparatus thus configured operates as follows when grinding the vertical roll. That is, when the vertical roll 1 is to be ground, the present grinding device is arranged so that the peripheral surface 3a of the roll drive roller 3 is in contact with the peripheral surface 1a of the vertical roll 1 so as to be positioned near the vertical roll 1. Set up. Then, the electromagnet is energized to excite the roll drive roller 3. In this state, the peripheral surface 3a of the roll driving roller 3 and the peripheral surface 1a of the vertical roll 1 come into strong contact by magnetic force. Thereafter, when the electric motor 5 is rotated, the roll drive roller 3 is rotated via the chain 4a and the sprocket 4b, and as a result, the vertical roll 1 is rotated by magnetic attraction (suction force). Then, in this state, the cutting tool 6 on the base 2 of the grinding device is
The cutting tool is moved toward the vertical roll 1 so that the cutting edge at the tip of the cutting tool 6 comes into contact with the peripheral surface 1a of the vertical roll 1 and the cutting tool 6 is moved in the axial direction of the vertical roll 1 (vertical direction in FIG. 2). For example, the peripheral surface 1a of the vertical roll 1 can be cut (ground).

In the above embodiment, the vertical roll 1 is driven by providing one roll driving roller 3.
As shown in FIG. 3, a pair of upper and lower roll driving rollers 3 is provided on a base 2 of a grinding device with a grinding means (bite 6) therebetween.
May be provided.

In the above embodiment, the peripheral surface of the vertical roll 1 is
A cutting tool 6 is used to smooth 1a, but if grinding is necessary, a grinding wheel for grinding or polishing should be provided instead of the tool 6 in the grinding means. If so, it can be similarly implemented.

In the above embodiment, the shape of the peripheral surface of the roll drive roller 3 is not described at all, but the shape of the peripheral surface 3a of the roll drive roller 3 corresponds to the peripheral surface 1a of the vertical roll 1. It is configured as follows. Specifically, for example, as shown in FIG.
When 1a is formed by a convex curved surface, the shape of the peripheral surface 3a of the roll drive roller 3 is formed by a concave curved surface that is joined to the peripheral surface 3a. Conversely, as shown in FIG. 4 (b), when the peripheral surface 1a of the vertical roll 1 is formed of a concave curved surface, the shape of the peripheral surface 3a of the roll drive roller 3 is joined to this. It is composed of a convex curved surface as described below.

In the above embodiment, the vertical roll of the rolling mill has been described as an example. However, it goes without saying that the present invention can be similarly applied to a roller of another device rotatably disposed on the support. .

[0025]

According to the roll grinding apparatus of the present invention, the roll is detached from a device such as a rolling mill while being mounted on the support, mounted and fixed at a predetermined position, and the roll is positioned near the roll. If the grinding device is arranged, the peripheral surface of the roll can be easily ground. In addition, the present invention can be easily applied to existing rolls such as vertical rolls of existing rolling mills without changing or modifying the structure of the roll itself.

As a result, for example, if a rolling mill is taken as an example, all of the considerable number of vertical rolls of each rolling mill can be easily ground. You can save money. In addition, since the conventional vertical rolls, which are already moving at each steelworks, can be easily ground as described above without any change or modification, it is extremely easy to introduce the present invention.

[Brief description of the drawings]

FIG. 1 is a plan view conceptually showing a configuration of a main part of a roll grinding device according to an embodiment of the present invention.

FIG. 2 is a front view conceptually showing a configuration of a main part of the roll grinding device according to the embodiment of the present invention.

FIG. 3 is a conceptual diagram showing a configuration of a main part of a roll grinding device according to another embodiment.

FIGS. 4 (a) and 4 (b) are enlarged plan views of contact portions showing the shapes of the peripheral surfaces of the vertical roll and the roll driving roller according to the embodiment of the present invention.

FIG. 5 is a side view showing a configuration of a main part of a conventional work roll grinding device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Vertical roll 1a ... Peripheral surface of a vertical roll 2 ... Base 3 ... Roll drive roller 3a ... Peripheral surface of a roll drive roller 6 ... Cutting tool (grinding means)

Claims (1)

(57) [Scope of request for utility model registration] 1. A roll grinding apparatus capable of grinding a roll peripheral surface while a roll is rotatably disposed on a support, wherein the base is disposed close to the roll to be ground. Table and
A roll driving roller disposed on the base and having a peripheral surface in contact with the peripheral surface of the roll and being at least excited during grinding; and a roller disposed on the base and closely spaced to the peripheral surface of the roll. A roll grinding apparatus comprising: a movable grinding means.