JP2558263Y2 - Adjustment device for disc roll for cross drilling machine - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for adjusting a disc roll for a cross drilling machine for manufacturing a seamless pipe.

[0002]

2. Description of the Related Art As is well known, a seamless steel pipe is manufactured by inclined roll piercing and rolling. Guide shoes are arranged on the left and right sides of the inclined main rolls arranged vertically, and guide the material being drilled to prevent unnecessarily bulging of the raw tube. For drilling small and medium-diameter small-sized steel pipes, a disk-shaped rotary guide shoe, that is, a disk roll, is used instead of the guide shoe to improve the forward efficiency of the cross-drilling machine. And the wear of the guide shoe is reduced (for example, Japanese Patent Publication No. 55-41842, Japanese Patent Publication No. 2-307).
No. 63, etc.).

However, in the main roll in which such a disk roll is arranged, since the disk roll is generally arranged in parallel with the material path line, the main roll comes out from the gouge position of the main roll. In this case, since the outer circumference of the disk roll is a circular arc, the gap between the outer circumference of the main roll and the outer circumference of the disk roll gradually increases. For this reason, there is a problem that the material rolls out on the outer peripheral end of the disc roll and abnormal rolling occurs. Therefore, Japanese Patent Application Laid-Open No. 63-90
In Japanese Patent No. 306, the disk rolls are arranged on the left and right sides in parallel with the outgoing side surfaces of the main rolls arranged vertically, and the gap between the main roll and the disk rolls is set to substantially zero. There has been proposed an adjusting device for inclining a disk roll with respect to an outgoing side surface of a main roll or horizontally moving the disk roll.

[0004] However, such a disc roll tilt adjusting device supports both ends of a disc roll drive shaft.
The pair of brackets is fixed to the movable plate, and the movable plate is swung on a plane parallel to the roll drive shaft to adjust the tilt of the disk roll.
There is a problem that it is difficult to adjust in the direction of the pass line or to adjust the amount of reduction of the disc roll.

[0005]

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve such a problem, and the gist thereof is as follows. 1) The arrangement of a pair of inclined main rolls (1) is perpendicular to the arrangement. Then, a pair of disc rolls (2) is arranged, and the tip of a roll drive shaft (3) of the disc roll (2) is joined to a slide chock (4) to drive these rolls. The shaft (3) and the slide chocks (4) are each connected to a bearing case (5).
In the cross drilling machine supported by (7), a partial cylindrical surface receiving portion (8) (10) centered on a disc roll (2) is provided on the outer periphery of the double bearing case (5) (7). And a roll adjusting device (15) (17),
(16) and (18) are attached, and the bearing cases (5) and (7) slide on the cylindrical surface with respect to the housings (9) and (11) via the cylindrical receiving portions (8) and (10). And the tilting of the disc roll (2) in order to make it possible to adjust the disc roll for a cross drilling machine. 2)
2. The adjusting device for a disc roll for a cross drilling machine according to claim 1, wherein the housing (9) (11) is provided with a longitudinal adjusting device in the direction of the material path line (a). 3) The drilling machine frame. The housing (9) is pivotally mounted on the housing (9) by means of the revolving frames (12) and (13) which are swingably mounted on the (14) and are provided with disc roll reduction amount adjusting devices (29) and (30).
The apparatus for adjusting a disc roll for a cross drilling machine according to claim 2, which supports (11).

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail with reference to the embodiments shown in the accompanying drawings. FIG. 1 is a plan view of an embodiment of the present invention (a plan view as viewed from arrow B to FIG. 2), FIG. 2 is a side view as viewed from arrow A to FIG. 1, and FIG.
4 is an enlarged view of a main part viewed from C to arrow, and FIG.

The present embodiment is suitable for a vertical cross-drilling machine for producing a seamless steel pipe. Therefore, the main roll 1 is disposed vertically above and below a material path line a, and The rule 2 is arranged on the left and right. The main roll 1 is attached to a cradle 32 via a not-shown roll chock, and the cradle 32 is pierced by a cradle frame 33 to be described later. 14 attached. Since these disc rolls 2 are symmetrical, only one of them will be described.

First, an outline of the overall configuration will be described. As shown in FIG. 3, the disc roll 2 is mounted on a roll drive shaft 3, and the tip of the roll drive shaft 3 is fitted to a slide chock 4 to be rotatable. Supported.
The slide chock 4 is supported by an upper bearing case 5 so as to be slidable in the axial direction. The roll drive shaft 3 is rotated via a bearing 6 to a lower bearing case 7 and axially. It is slidably supported. The roll drive shaft 3 is rotated by a drive motor (not shown).

The upper bearing case 5 has two cylindrical cylindrical receiving portions 8, 8 formed in a flange shape around the disc roll 2, and is supported by the upper housing 9 so as to be slidable on the cylindrical surface. I have. In the lower bearing case 7, two partial cylindrical receiving portions 10, 10 are formed in a flange shape around the disc roll 2, and are supported by the lower housing 11 so as to be slidable on the cylindrical surface. As shown in FIGS. 1 and 2, the upper and lower housings 9, 11 are slidably supported in the direction of the pass line a by the upper and lower turning frames 12, 13, respectively. The lower turning frames 12, 13 are attached to the drilling frames 14, 14.

Next, various adjusting devices for the disk roll 2 will be described. First, the angle adjustment of the disc roll 2 will be described. In order to adjust the angle of the disc roll 2 with respect to the side surface of the main roll 1, the following procedure is performed. That is,
The upper bearing case 5 and the lower bearing case 7 are provided with clamping cylinders 15, 16 and worm jacks 17, 18 for angle adjustment, respectively, facing each other. The clamping cylinders 15 and 16 and the angle adjusting worm jacks 17 and 18 are provided in upper and lower housings 9 and 1, respectively.
1 is attached. Therefore, after the clamping cylinders 15 and 16 are unclamped, the angle adjusting wall
When the mujacks 17 and 18 are operated, the angle θ in FIG.
(0 to 4 °), the upper and lower bearing cases 5 and 7
The disk roll 2 is tilted by sliding on the lower housings 9 and 11 by a cylindrical surface. When tilted by a predetermined angle, the clamping cylinders 15 and 16 are clamped.

Next, in order to adjust the disc roll back and forth in the direction of the pass line a, the following is performed. That is,
The upper and lower housings 9 and 11 have clamping cylinders 19 and 20, respectively, and a worm jack 2 for front-rear adjustment.
1 and 22 are provided to face each other. These clamp cylinders 19 and 20 and worm jacks 21 and 22 for front / rear adjustment are provided with upper and lower turning frames 12 and 13, respectively.
Mounted on Also, the upper and lower housings 9, 11
Are supported by penetrating through holes 23 provided in the upper and lower turning frames 12 and 13, respectively. Therefore, after the clamping cylinders 19 and 20 are set in the unclamped state, the worm jacks 21 and 22 for front-rear adjustment are provided.
Is operated, the upper and lower housings 9 and 11 slide forward and backward in the through holes 23 with respect to the upper and lower turning frames 12 and 13, and the disk roll 2 moves in the direction of the pass line a. Can be adjusted back and forth.

Next, in order to adjust the disk roll 2 up and down in the axial direction, the following is performed. That is, as shown in FIG. 3, a screw is engraved on the outer periphery of the bearing case 24 that supports the roll drive shaft 3, and an adjusting nut 25 is screwed onto the screw. A worm wheel is formed on the outer periphery of the adjusting nut 25, and a worm wheel is formed on the worm wheel.
26 is screwed. Therefore, when the worm 26 is rotated after the clamping cylinder 27 attached to the slide chock 4 is unclamped, the bearing case 24 moves in the axial direction via the adjustment nut 25. If the clamping cylinder 27 is clamped, the disc roll 2 can be adjusted up and down in the direction perpendicular to the pass line a, that is, in the axial direction.

Next, in order to adjust the amount of reduction of the disk roll 2, the following is performed. That is, the upper and lower revolving frames 12 and 13 are supported by the drill frame 14 so as to be swingable by the pivots 28, respectively.
On the opposite side of 8, a jack 29 for pressure reduction and a cylinder 30 for clamping are provided. Therefore, when the motor 31 is operated after the clamping cylinder 30 is unclamped, the pressure adjusting jack 29 is operated, and the upper and lower turning frames 12, 13 are turned around the pivot 28.
After turning, if the clamping cylinder 30 is clamped, the amount of reduction of the disc roll 2 can be adjusted.

As described above, in the disc roll 2 of the present embodiment, since the angle adjustment, the front-back adjustment, the up-down adjustment, and the reduction amount can be adjusted, the inner and outer surfaces of the raw tube can be prevented from being damaged, and uneven thickness can be prevented. The forward efficiency can be improved while preventing. Although the present embodiment has been described with reference to the disk roll for a vertical cross drilling machine, the present invention is not limited to this, and a disk roll for a horizontal cross drilling machine may be used. Further, the bearing case of this embodiment is supported by the housing via a partially cylindrical receiving portion, but the present invention is not limited to this, and the bearing case may be a turning frame or a perforated frame. (Refer to Japanese Patent Publication No. Hei 2-30763), and the housing may be used as a tilting guide via a partial cylindrical surface receiving portion.

[0015]

According to the present invention, a partial cylindrical surface receiving portion is provided on a bearing case supporting a roll drive shaft and a slide chock of a disc roll for a cross drilling machine, and the partial cylindrical surface receiving portion is provided. Since the bearing case is made to slide on the cylindrical surface of the housing via the receiving portion, the supporting structure of the disk roll is strengthened, and the housing has other adjusting functions, for example, before and after the disk roll. An adjusting function, a disc roll reduction amount adjusting function, and the like can be provided, thereby preventing the inner and outer surfaces of the raw tube from being scratched and uneven thickness.

[Brief description of the drawings]

FIG. 1 is a plan view of the embodiment of the present invention (a plan view taken along arrow B of FIG. 2).

FIG. 2 is a side view of FIG.

FIG. 3 is an enlarged view of a main part of FIG.

FIG. 4 is a view as seen from arrows D in FIG. 1;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Main roll, 2 ... Disc roll, 3 ... Roll drive shaft, 4 ... Slide chock, 5,7 ... Bearing case, 8,
10: Partial cylindrical surface receiving portion, 9, 11: Housing, 1
5,16 ... Cylinder for clamp, 17,18 ... Warm jack for angle adjustment

Claims (3)

(57) [Scope of request for utility model registration] 1. A pair of disc rolls (2) are arranged orthogonal to the arrangement of a pair of inclined main rolls (1), and a roll drive shaft of the disc roll (2) is provided. The tip of (3) is joined to a slide chock (4), and the roll drive shaft (3) and the slide chock (4) are respectively connected to a bearing case (5).
In the cross drilling machine supported by (7), a partial cylindrical surface receiving portion (8) (10) centered on a disc roll (2) is provided on the outer periphery of the double bearing case (5) (7). Forming and disc roll tilt adjusting device (15)
(17), (16), and (18) are provided, and the bearing case (5) is provided through the cylindrical receiving portions (8) and (10).
(7) An apparatus for adjusting a disc roll for a cross drilling machine, wherein the disc roll (2) is tilted by allowing a cylindrical surface to slide with respect to the housings (9) and (11). 2. The adjusting device for a disc roll for a cross drilling machine according to claim 1, wherein a front-rear adjusting device in the direction of the material path line (a) is attached to the housing (9) (11). 3. An apparatus (2) for swingingly attaching to a drilling machine frame (14) and adjusting a rolling amount of a disc roll.
9) (10) (13) (30) a revolving frame provided with (30)
3. The adjusting device for a disc roll for a cross-drilling machine according to claim 2, wherein the housing is supported by the housing.