CN211939724U

CN211939724U - Repairing device for positioning groove of side guide plate sliding seat of rolling mill

Info

Publication number: CN211939724U
Application number: CN202020634645.1U
Authority: CN
Inventors: 潘龙博; 王飞; 高安阳; 王成; 吴涛; 葛国华; 彭浩; 江济; 金剑; 杨旭
Original assignee: Masteel Heavy Machinery Manufacturing Co Of Anhui
Current assignee: Masteel Heavy Machinery Manufacturing Co Of Anhui
Priority date: 2020-04-23
Filing date: 2020-04-23
Publication date: 2020-11-17
Anticipated expiration: 2030-04-23

Abstract

The utility model discloses a prosthetic devices is used to rolling mill side guide slide constant head tank belongs to the local processing technical field of restoreing of rolling mill frame. The utility model discloses a prosthetic devices for rolling mill side guide slide constant head tank, including the bottom plate, bottom plate fixed mounting is above the side guide slide constant head tank on the rolling mill medial surface, has seted up the feed slide along guide slide constant head tank length direction symmetry on the bottom plate, the adaptation formula is installed and is fed the slide in the feed slide, the portable restoration frock that is connected with above feeding the slide; after overlaying, the repairing tool is adopted, the existing rack structure is used as a positioning and measuring reference of the groove to be repaired, the side wall of the welded groove is accurately machined on site, and milling feeding is manually carried out, so that the side wall of the groove is accurately machined and corrected, and online precision recovery of the same type of rolling mills is realized.

Description

Repairing device for positioning groove of side guide plate sliding seat of rolling mill

Technical Field

The utility model belongs to the technical field of the local repair processing technique of rolling mill frame and specifically relates to a prosthetic devices for rolling mill side guide slide constant head tank that says so.

Background

The large hot continuous rolling mill frame is used as an immovable rolling mill base part, and each frame has the weight of more than 100 tons, so that the weight is huge. In the long-term rolling operation process, factors such as rolling force effect, mechanical vibration influence, water vapor corrosion, thermal radiation influence and the like can cause the special designed functional structure to be abraded, and the due mechanical precision of the special designed functional structure is lost. Common machining equipment cannot enter the rack to repair the machine, and the reliable operation of rolling mill equipment needs to be repaired in terms of precision and strength. Taking the inner side surface of a rack of a certain 1580 hot continuous rolling production line R2 roughing mill as an example, a typical positioning groove for installing a slide seat of a side guide plate of a rolling mill is worn due to long-term use, so that the positioning gap is too large, the positioning precision of the slide seat of the side guide plate is seriously lost, the problem causes the unreliable installation and positioning of the guide plate, and the positioning precision of the groove needs to be repaired on site. The groove to be repaired is located on the inner side surface of the rolling mill, and needs to be repaired on site due to the fact that the rolling mill frame is immovable. The repair of the abrasion corrosion has certain precision requirement, and the repair area is larger, the distribution positions are more dispersed, the difficulty is higher, and the requirement is higher. The method is an economic and effective method for overlaying a special grinding layer on the side surface of the worn end, and has the advantages that the special characteristics of the Zhangzhuang ore roller press to the roller material are considered, the alloy content is high, the carbon equivalent is 1.4, the quenching tendency is great, the weldability is extremely poor, and cold cracks and hot cracks are easily generated; in addition, the large-area repair welding is wear-resistant for the first time, welding materials need to be determined in advance, and a welding test needs to be carried out, so that the wear resistance and the welding quality are guaranteed.

Through retrieval, a study and application of adaptation of guide and guard of an entrance and an exit of a finishing mill group with 1500mm broadband according to a paper of industry produced in 2017, 03 and 01 indicate that the guide and guard device of the entrance and the exit of the finishing mill group does not need to be maintained greatly after being installed, debugged and produced by a production line, although the production requirements can be basically met, along with the time lapse and the development of new products, the fault rate of the guide and guard device of the entrance and the exit is increased linearly, mainly representing that the action is inflexible during roll replacement, the side guide plate is not in place due to blocking and poor in centering property, particularly after the side guide plate is put into short stroke, the calibration deviation is large each time, the cylinder head of the hydraulic cylinder of the side guide plate is seriously worn, the production is severely restricted, the roll replacement time is prolonged, and great difficulty is added to the maintenance work of the whole equipment. And because the equipment of the finish rolling area is more, the equipment is arranged compactly, and no maintenance space exists, so that the pressure of maintenance personnel is very large, the equipment must be modified in adaptability, the service life of the equipment can be greatly prolonged, repeated labor is avoided, and a series of modification schemes must be determined to thoroughly solve the problem of influencing the operation of the system by comprehensively analyzing the entrance and exit guides. Ensuring reliable and safe operation of the equipment.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved by the utility model

Because the positioning accuracy who uses the rolling mill side guide slide that causes for a long time among the prior art hangs down the scheduling problem, the utility model provides a prosthetic devices is used to rolling mill side guide slide constant head tank utilizes and has had rack construction as the location and the measuring basis of waiting to repair the groove to manual feeding restores the frock, thereby carries out the directional processing in the aspect of intensity, the mechanical accuracy to certain specific positioning guide slot lateral wall functional structure and revises, realizes the online comprehensive benefit of restoreing.

2. Technical scheme

In order to achieve the above purpose, the utility model provides a technical scheme does:

according to the specific technical parameters of the positioning groove of the sliding seat of the side guide plate of the rolling mill, a processing and repairing device is designed, and the online repairing of the specific functional molded surface of the rolling mill frame is realized through a manual online control method. The processing and repairing device is provided with a bottom plate as a processing template, and the bottom plate is fixedly arranged above a positioning groove of a side guide plate sliding seat on the inner side surface of the rolling mill; the bottom plate is provided with a through hole corresponding to the side guide plate slide seat positioning groove, and the shape of the through hole is matched with that of the side guide plate slide seat positioning groove so as to be convenient for completely exposing the side guide plate slide seat positioning groove from the through hole; the utility model discloses a repair tool, including through-hole, guide plate slide positioning groove, feeding slide, fixing base, measuring base, repair frock, the through-hole left and right sides has all been seted up along the equal symmetry of guide plate slide positioning groove length direction and has been fed the slide, feeding slide interior adaptation formula and installing and feeding the slide, feeding slide top movably and being connected with the repair frock, utilizing existing rack construction as the location and the measuring basis of side guide plate slide positioning groove, the manual repair frock.

According to the further technical scheme, a feeding handle is fixedly mounted on the feeding sliding seat, and the feeding sliding seat can move in a Y direction in a feeding slide way; the repairing tool comprises a transverse sliding seat, the transverse sliding seat is movably arranged on the upper surface of a feeding sliding seat, and the transverse sliding seat can move on the feeding sliding seat along the X direction; the transverse sliding seat is movably provided with a clamping seat, and the clamping seat is fixedly provided with a straight grinding machine so as to firmly fix the clamping seat, thereby avoiding the defects of instability and inaccurate processing caused by manual operation; when the straight grinding machine is installed, the vertical state is ensured, the gap is corrected by adopting a pad adding mode, and the space in the depth direction is required to ensure the limit requirement; the feeding handle is pushed, so that the straight grinding machine is moved to the position of an area to be repaired along the X direction, the feeding sliding seat and the clamping seat are fixed through the bolts, the feeding X direction of the straight grinding machine is locked, and the machining tool consumption is controlled.

According to the further technical scheme, a transverse moving handle is fixedly mounted on the transverse moving sliding seat, and after the relative position of the straight grinding machine and the clamping seat is fixed, the Z direction of feeding of the straight grinding machine is locked by adjusting the position of the transverse moving handle, so that the depth of the pressing knife is controlled.

According to a further technical scheme, the clamping seat comprises a base and a gland, the base and the gland are detachably connected, and a clamping area is formed between the base and the gland after connection and used for clamping the straight grinding machine.

According to the further technical scheme, the straight grinding machine is vertically arranged above the bottom plate, a rotary file is detachably mounted at the lower end of the straight grinding machine, the straight grinding machine is a high-speed straight grinding machine, the rotating speed is 10000 and 2800r/min, the rotary file is made of hard alloy, the side wall of the positioning groove of the side guide plate sliding seat is accurately machined and corrected, the correction depth is about 50mm, and therefore the requirements of machining precision H8, the roughness Ra is less than or equal to 12.5, and the flatness error is less than or equal to 0.2mm are guaranteed.

Further technical scheme, it is provided with the slider to feed slide below symmetry, slider demountable installation is in the slide lower part, just slider adaptation formula is packed into and is fed in the slide for the slide can slide around the slide, thereby guarantees that the restoration frock can treat along side guide slide constant head tank and repair the region processing.

3. Advantageous effects

Adopt the technical scheme provided by the utility model, compare with prior art, have following beneficial effect:

(1) the utility model discloses a repair device for rolling mill side guide plate slide carriage positioning groove, after build-up welding, with the bottom plate fixed mounting in the frame wait to repair the groove terminal surface position, adopt the restoration frock of special design preparation, utilize existing frame construction as the location and the measuring basis of waiting to repair the groove, carry out accurate field machining to the lateral wall of the groove that has welded, mill and feed and adopt manual implementation to carry out accurate processing to the groove lateral wall and revise, guarantee that machining precision, roughness and flatness error satisfy the requirement;

(2) the utility model discloses a repair device for positioning grooves of a rolling mill side guide plate sliding seat.A feeding handle is fixedly arranged on a feeding sliding seat and can drive a straight mill to move to a region to be repaired along the X direction; the relative positions of the feeding sliding seat and the clamping seat are fixed to lock the X direction of feeding of the straight grinding machine, so that the machining tool consumption is controlled;

(3) the utility model discloses a repair device for positioning grooves of a rolling mill side guide plate sliding seat, a transverse moving handle is fixedly arranged on the transverse moving sliding seat, and the feeding in the Z direction of a straight grinding machine is locked by adjusting the position of the transverse moving handle, so that the depth of a cutter pressing is controlled;

(4) the utility model discloses a prosthetic devices for rolling mill side guide plate slide constant head tank, can dismantle the link between base and the gland, form the centre gripping region between the two after the connection for the centre gripping straight mill, the straight mill adopts high-speed straight mill, and guarantees vertical installation status, and high-speed straight mill rotational speed is 10000 and 2800r/min, and the rotary file material is carbide, and then carries out the accurate processing correction to side guide plate slide constant head tank lateral wall, and guarantees that machining precision, roughness and plane degree error meet the demands;

(5) the utility model discloses a repairing device for rolling mill side guide slide constant head tank can slide around the slide through the slider that can install with slide adaptation formula feeding slide below symmetry to realize that the slide can slide along the slide, finally realize repairing the frock and can treat along side guide slide constant head tank that the repair area processes the restoration, and should repair frock easy dismounting, swift.

Drawings

Fig. 1 is a schematic front view of the repairing device of the present invention;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a left side view of FIG. 1;

FIG. 4 is a schematic view of the positioning groove of the slide seat of the middle guide plate according to the present invention;

FIG. 5 is a schematic view of a bead welding area of a positioning groove of a slide seat of the middle-side guide plate according to the present invention;

FIG. 6 is a schematic front view of the feeding slide of the present invention;

FIG. 7 is a top view of FIG. 6;

FIG. 8 is a left side view of FIG. 6;

FIG. 9 is a schematic view of the front view of the clamping base of the present invention;

FIG. 10 is a top view of FIG. 9;

FIG. 11 is a left side view of FIG. 9;

FIG. 12 is a front view of the middle cross sliding base of the present invention;

FIG. 13 is a top view of FIG. 12;

fig. 14 is a left side view of fig. 12.

In the figure: 1-a bottom plate; 2-a feed slide; 3-a clamping seat; 4-a transverse sliding seat; 5-a straight mill; 6-side guide plate slide seat positioning groove; 7-a region to be repaired; 11-a feed chute; 12-a bolt; 21-a slide block; 22-a feed handle; 31-a base; 32-a gland; 33-a clamping area; 41-a traverse handle; 51-rotary file; 61-through hole.

Detailed Description

For a further understanding of the present invention, reference will be made to the following detailed description taken in conjunction with the accompanying drawings.

Example 1

The repairing device for the positioning groove of the side guide plate sliding seat of the rolling mill in the embodiment is shown in fig. 1-3 and comprises a bottom plate 1, wherein the bottom plate 1 is fixedly arranged above a positioning groove 6 of the side guide plate sliding seat on the inner side surface of the rolling mill; a through hole 61 is formed in the bottom plate 1 corresponding to the side guide plate slide seat positioning groove 6, and the shape of the through hole 61 is matched with that of the side guide plate slide seat positioning groove 6, so that the side guide plate slide seat positioning groove 6 is completely exposed from the through hole 61; the through-hole 61 left and right sides has been seted up along baffle slide constant head tank 6 length direction symmetry and has been fed slide 11, feed slide 11 interior adaptation formula and install and feed slide 2, feed slide 2 top movably connected with and restore the frock, utilize the existing rack construction of 1580 hot continuous rolling production line R2 roughing mill as the location and the measuring basis of side baffle slide constant head tank 6, the manual repair frock that feeds sets up corresponding correction degree of depth according to required machining precision, roughness and plane degree error to treat the groove lateral wall of restoreing regional 7 and carry out the precision finishing correction.

Example 2

The basic structure of the repairing device for the positioning groove of the side guide plate sliding seat of the rolling mill is the same as that of the repairing device in embodiment 1, and the repairing device is different and improved in that: as shown in fig. 12 to 14, the repairing tool comprises a traverse slide 4, wherein the traverse slide 4 is movably arranged on the upper surface of a feeding slide 2 so as to ensure that the traverse slide 4 can move on the feeding slide 2 along the X direction; as shown in fig. 1-3, a clamping seat 3 is movably mounted on the transverse sliding seat 4, a straight grinding machine 5 is fixedly mounted on the clamping seat 3, a vertical state is ensured when the straight grinding machine is mounted, a pad adding manner is adopted for correction when a gap exists, and a limiting requirement is ensured in a space in a depth direction; pushing a feeding handle 22 so as to move the straight grinding machine 5 to the position of the area to be repaired 7 along the X direction, fixing the feeding slide seat 2 and the clamping seat 3 through bolts so as to lock the X direction of feeding of the straight grinding machine 5, and thus controlling the machining tool consumption; a feeding handle 22 is fixedly installed on the feeding slide seat 2, and the feeding slide seat 2 can drive the straight grinding machine 5 to move along the Y direction in the feeding slide way 11 so as to realize that the straight grinding machine 5 advances along the Y direction at a constant speed, thereby finishing the filing processing;

in the embodiment, as shown in fig. 9 to 11, the clamping seat 3 includes a base 31 and a gland 32, the base 31 and the gland 32 are connected by bolts, a circular clamping area 33 is formed between the base 31 and the gland 32 for clamping the straight grinding machine 5, and bolts can be adjusted according to the size of the straight grinding machine 5 to achieve fastening.

Example 3

The basic structure of the repairing device for the positioning groove of the side guide plate sliding seat of the rolling mill is the same as that of the repairing device in embodiment 2, and the repairing device is different and improved in that: as shown in fig. 3, a traverse handle 41 is further fixedly mounted on the traverse slide 4, a dovetail guide key is arranged on the bottom surface of the clamping seat 3, the moving direction of the straight grinding machine 5 is guided by utilizing the fixing and guiding functions of the guide key, and the movement according to a required track is realized, after the relative position of the straight grinding machine 5 and the clamping seat 3 is adjusted, the feed of the straight grinding machine 5 in the Z direction is locked by adjusting the position of the traverse handle 41, so that the depth of a knife is controlled, and the position locking of the straight grinding machine 5 in the Z direction is conveniently and quickly realized.

Example 4

The basic structure of the repairing device for the positioning groove of the side guide plate sliding seat of the rolling mill is the same as that of the embodiment 3, and the repairing device is different and improved in that: as shown in fig. 3, the straight grinding machine 5 is vertically arranged above the bottom plate 1, the lower end of the straight grinding machine 5 is detachably provided with a rotary file 51, the straight grinding machine 5 adopts a high-speed straight grinding machine, the rotating speed is 10000-2800r/min, the rotary file 51 is made of hard alloy, the side wall of the positioning groove 6 of the side guide plate sliding seat is accurately processed and corrected, the correction depth is about 50mm, so as to ensure the requirement of processing precision H8, the roughness Ra is less than or equal to 12.5, and the flatness error is less than or equal to 0.2 mm;

in this embodiment, the straight mill 5 is selected as the cutting device for the on-line machining. The straight mill is as handheld milling work piece, and its volume is little, the rotational speed is high, installs alloy rotary file 51 tool bit additional on it, can carry out milling processing operation to all kinds of metals, and the straight mill is easily obtained. In the embodiment, a certain GGS28CE type straight mill is adopted as a processing power device, the maximum volume is 300 multiplied by 75, the no-load rotation speed is 10000 and 28000 r/min, the weight is about 2.9 kg, and 220V voltage is adopted for power supply; the end face of the bottom plate 1 is used for carrying out depth direction tool setting, and the checking that the depth feed amount is 49mm is basically proper; and manually polishing and back chipping the corner transition part which is not processed by an angle grinder, thereby recovering the original precision of the abrasion corrosion groove.

Example 5

The basic structure of the repairing device for the positioning groove of the side guide plate sliding seat of the rolling mill is the same as that of the embodiment 4, and the repairing device is different and improved in that: as shown in fig. 6-8, the slider 21 is symmetrically arranged below the feeding slide seat 2, the slider 21 is detachably mounted on the lower portion of the slide seat 2, the slider 21 is adaptively mounted in the feeding slide way 11, and the slide seat 2 can slide back and forth along the slide way 11, so that the repairing tool is driven to process and repair the region 7 to be repaired along the side guide plate slide seat positioning groove 6, and the slider 21 is matched with the installation mode of the slide way 11, so that the repairing tool is convenient and quick to disassemble and assemble.

Example 6

A method for repairing a positioning groove of a rolling mill side guide plate sliding seat in the embodiment, as shown in fig. 1-3, comprises the following steps:

step one, surfacing: performing surfacing on the area to be repaired 7, wherein as shown in fig. 4-5, the surfacing position of the area to be repaired 7 is only the side wall of the 165 × 595 rectangular groove, the depth is 50mm, and the surfacing area is about 595 × 50mm²The thickness of each side edge is about 3mm, the to-be-repaired area 7 of the operation side and the driving side is used as a processing template through the bottom plate 1, the operation side and the driving side are fixed through the two bottom plates 1, 2 positions of each bottom plate 1 need to be welded, and 8 positions of the operation side and the transmission side need to be subjected to surfacing calculation; the rolling mill frame is of a carbon steel structure, and phi 1.2ER50-6 is selected for matching with the frame to weld the welding wire; cleaning up welding slag on each layer of welding slag, and tapping the welding seam by using a wind shovel or a small hammer to eliminate welding stress; during welding, each layer is mutually staggered, and arc pits are prevented from being concentrated on one position; when arc is closed, a part of molten metal is backfilled for arc extinction so as to prevent arc crater microcracks from being generated; each layer of welding bead needs to be carefully checked, and welding is carried out again after defects such as air holes, cracks and the like generated are thoroughly removed; after surfacing, the thickness of the surfacing layer is checked, and the condition that the unilateral machining allowance is uniform and is 1-2 mm is ensured, and the unilateral machining allowance cannot be too large can be ensured;

step two, heat preservation after welding: after surfacing, heating a local area of surfacing, and carrying out heat preservation treatment at 250-300 ℃ for 4 hours to carry out dehydrogenation treatment and avoid cooling cracks;

step three, fine machining after welding: the bottom plate 1 is fixedly installed at the end face position of a side guide plate slide seat positioning groove 6 of a rack, the existing rack structure is used as a positioning and measuring reference of the side guide plate slide seat positioning groove 6, an operation side and a driving side of the rack are both used as processing templates through the bottom plate 1, the bottom plate 1 is fixed through bolts M48 and M16, the inspection and the fitting state are good, the lower edge of the bottom plate 1 needs to be in close contact with the upper side of a positioning boss on the rack, 4 processing templates at the operation side or the driving side need to be installed at one time, and the operation side and the driving side are distinguished; through manually feeding the repairing tool, a tool bit mounting seat part of the straight grinding machine 5 is arranged in a cavity of a positioning groove 6 of a side guide plate sliding seat, so that the straight grinding machine 5 and a rotary file 51 are mounted conveniently, and a region 7 to be repaired is processed and corrected;

in the third step in this embodiment, the method further includes the following steps:

step A, controlling the depth of a pressing cutter: feeding 3-4 times along the Z direction, wherein the pressing cutter is 1/3-1/4 of the groove depth of the positioning groove 6 of the side guide plate sliding seat each time, and the Z direction of feeding of the straight grinding machine 5 is locked through the transverse moving handle 41 after each adjustment;

step B, controlling the machining tool consumption: the feeding handle 22 is controlled to move the straight grinding machine 5 along the X direction, and after the straight grinding machine 5 moves to the position of the area to be repaired 7, the feeding sliding seat 2 and the clamping seat 3 are fixed through bolts so as to lock the feeding X direction of the straight grinding machine 5;

step C, filing: the knife inlet is positioned at the upper limit position of the area to be repaired 7, a power supply is switched on, a switch of the direct grinding machine is switched on, the feeding handle 22 is held, the feeding handle 22 is pushed along a Y-shaped defense line, the direct grinding machine is controlled to advance at a constant speed along the Y direction by means of the cooperation of gravity and manpower, the filing processing is completed, and the filing is carried out by means of the rotating speed of the direct grinding machine 5 instead of manual hard pressing;

in the embodiment, a measuring tool is used for measuring the machining size, the size is compared with the size of a reserved die groove at the bottom, the next feeding amount is determined, the size precision is controlled within the range of +/-0.1 mm, the roughness is controlled within Ra12.5, the rasping work is repeated, and the cutting depth is continuously adjusted until the size is qualified; milling each side of each groove until the size is qualified; after a correction finishes, demolish bottom plate 1, the clearance processing region, irrelevant article clearance is gone out of the court, and the next station of transposition then, will process the subassembly transposition to other waiting to repair groove position departments, repeat above-mentioned operation, the utility model discloses a technical method and device are used for carrying out online precision to this type rolling mill and resume.

The present invention and its embodiments have been described above schematically, and the description is not limited thereto, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without departing from the inventive spirit of the present invention, the person skilled in the art should also design the similar structural modes and embodiments without creativity to the technical solution, and all shall fall within the protection scope of the present invention.

Claims

1. The utility model provides a repairing device for rolling mill side guide slide constant head tank which characterized in that: the device comprises a bottom plate (1), wherein the bottom plate (1) is fixedly arranged above a side guide plate sliding seat positioning groove (6) on the inner side surface of a rolling mill; a through hole (61) is formed in the bottom plate (1) corresponding to the side guide plate sliding seat positioning groove (6), and the shape of the through hole (61) is matched with that of the side guide plate sliding seat positioning groove (6); through-hole (61) left and right sides has been seted up along baffle slide constant head tank (6) length direction equal symmetry and has been fed slide (11), it installs to feed slide (2) to feed in slide (11) adaptation formula, but feed slide (2) top swing joint has the restoration frock.

2. The repairing device for the positioning groove of the rolling mill side guide plate sliding seat according to claim 1, characterized in that: the repairing tool comprises a transverse moving sliding seat (4), wherein the transverse moving sliding seat (4) is movably arranged on the upper surface of a feeding sliding seat (2) and can move on the feeding sliding seat (2) along the X direction.

3. The repairing device for the positioning groove of the rolling mill side guide plate sliding seat according to claim 2, wherein: feed on the slide (2) fixed mounting have feed handle (22), feed slide (2) can be in feeding slide (11) along the Y direction removal.

4. The repairing device for the positioning groove of the rolling mill side guide plate sliding seat according to claim 3, characterized in that: and a straight grinding machine (5) is fixedly arranged on the transverse moving sliding seat (4) through a clamping seat (3).

5. The repairing device for the positioning groove of the rolling mill side guide plate sliding seat according to claim 4, wherein: the horizontal moving handle (41) is fixedly mounted on the horizontal moving sliding seat (4), and the horizontal moving handle (41) can fix the relative position of the straight grinding machine (5) and the clamping seat (3).

6. The repairing device for the positioning groove of the rolling mill side guide plate sliding seat according to claim 5, wherein: the clamping seat (3) comprises a base (31) and a gland (32), the base (31) and the gland (32) are detachably connected, and a clamping area (33) is formed between the base (31) and the gland (32) after the base and the gland are connected and is used for clamping the straight grinding machine (5).

7. The repairing device for the positioning groove of the rolling mill side guide plate sliding seat according to claim 6, wherein: the vertical setting of straight mill (5) is in bottom plate (1) top, straight mill (5) lower extreme demountable installation has rotatory file (51).

8. The repairing device for the positioning groove of the rolling mill side guide plate sliding seat according to claim 7, wherein: feed slide (2) below symmetry formula demountable installation have slider (21), slider (21) adaptation formula is packed into and is fed in slide (11).