CN107088696A - A kind of roll repair welding built-up welder - Google Patents

Abstract

The invention discloses a roller repair surfacing welding machine, which aims to provide a mechanical equipment in the field of metal welding. The invention has the functions of pre-welding preheating, automatic surfacing welding, welding smoke removal and welding surface cleaning, and has the function of quickly adjusting the surfacing welder. It has the characteristics of large expansion capacity of the position and the size of the surfacing welding workpiece; the present invention is provided with a base seat, a bedside box, a six-jaw chuck, a tailstock top device and a working device. In the technical solution of the present invention, the working device adopts a single column beam structure , and integrate the functions of surfacing, preheating, welding smoke removal and welding surface cleaning into one working head to make it compact in structure, energy saving and environmental protection; use six-jaw chuck and tailstock top device to clamp the repaired roll, so that The clamping is fast and reliable; the present invention has simple structure, easy manufacture and convenient maintenance.

Description

A roll repair surfacing welding machine

technical field

The present invention relates to a mechanical device in the field of metal welding, in particular to a roll repair surfacing welding machine.

Background technique

At present, the known roll surfacing machine is a special welding equipment for surfacing welding after the rolls of the rolling mill or the conveying rolls installed in the rolling system are worn out during use. There are mainly two structural forms: side-mounted pulley type and trolley It is mainly used for automatic submerged arc welding of rolls, and can also be used for automatic submerged arc welding of circular and longitudinal welds on rotary workpieces. The side-mounted pulley type is to hang the surfacing working system sideways on the longitudinal guide rail of the main machine, while the trolley type is to place the surfacing working system on a car and walk on a specially set track for it. The side-mounted surfacing machine adopts an integral main machine structure, which is similar in layout to the horizontal lathe. The size of the surfacing workpiece is limited by the size of the main machine structure, so it is difficult to expand and the versatility is not strong; the work of the trolley-type surfacing machine system, the working system is set on the trolley, and the traveling system of the trolley and the main machine adopt a split type, so that the size of the surfacing welding workpiece can be greatly expanded, but the trolley type has a large space for the equipment, and the walking accuracy of the trolley is low. Cause defects such as insufficient arc stability.

Contents of the invention

The purpose of the present invention is to provide a roll repair surfacing machine, which has the characteristics of quick adjustment of the surfacing welding station, large expansion capacity of the surfacing welding workpiece, and multi-functions such as pre-welding preheating, welding surface cleaning and welding smoke removal. .

The present invention is composed of a base, a bedside box, a six-jaw chuck, a tailstock top device, and a working device. box; wherein: the working device is composed of a column assembly, a beam assembly, and a working head, the beam assembly is arranged on the column assembly, and the working head is arranged on the beam assembly; the column assembly is composed of the first bearing seat, Vertical screw, second bearing seat, transition plate, first motor, column, two fixed pulleys, two cylindrical pins, pulley bracket, steel wire rope, eye bolt, counterweight, second motor, transition plate, first bearing seat, screw nut seat, second bearing seat and lead screw; there is a vertical groove on the column, a rectangular spigot on the upper end of the vertical groove, and a vertical circular through hole at the center of the top surface of the column. There is a set of joint holes on the surface, and two rectangular guide rails are arranged on the outside of the bottom of the column; the vertical screw is supported in the vertical groove of the column through the first bearing seat and the second bearing seat, and the transition plate is fixed in the rectangular stop of the column , the first motor is fixed on the transition plate and connected with the vertical screw; the two fixed pulleys are placed on the pulley bracket through two cylindrical pins; Pass two fixed pulleys; the pulley bracket is fixedly connected to the joint hole group of the column; the screw nut seat is arranged on the bottom surface of the column, and forms a spiral pair with the lead screw; the beam assembly is composed of the third motor, transition plate, Composed of horizontal screw, beam, two bearing seats, ring screws and nuts; the beam is in the shape of a "T" as a whole, and a rectangular horizontal slot and a vertical rectangular through hole are arranged on it; the horizontal screw passes through two bearing seats Supported in the rectangular horizontal channel of the beam, the transition backing plate is fixed on the end face of the rectangular horizontal channel; the third motor is fixed on the transition backing plate and connected with the horizontal lead screw; the lifting eye screw is fixed on the beam; The nut is solidly welded in the vertical rectangular through hole of the beam; the beam assembly is placed on the column of the column assembly through the vertical rectangular through hole of the beam, and the nut on the beam assembly and the vertical screw of the column assembly form a screw pair, and the beam assembly The eye screw of the lifting ring is connected with the wire rope of the column assembly; the working head is composed of two pressure plates, a welding fume collector, a welding wire support, a welding wire reel, a dust collector, a connecting pipe, a solder storage cylinder, a mobile seat, a burner, a combustion Device support, fastening nut, set screw, clamping seat, fourth motor, transition plate, two limit switches, lead screw, plunger, hollow shaft, steel nail brush, discharge pipe, welding wire guide plate, welding wire Conduit, pinch bracket, adjusting screw, fifth motor, passive pinch wheel, active pinch wheel, solder bracket and dust removal bracket; the moving seat is a rectangular frame with one side opening, on which a top surface and an inner cavity wall are arranged. There is a female seat on the wall of the inner cavity, a rectangular boss is arranged on the bottom surface of the movable seat, a hole system is arranged on the rectangular boss, and a long gap is arranged on the bottom of the rectangular boss; the overall shape of the burner is "L". "shape, welded by the vertical section steel pipe and the horizontal section steel pipe, there is a joint at one end of the vertical section steel pipe, and a number of burners are set on the horizontal section steel pipe; The inner cavity forms a rectangle inside the Guide rail; Welding fume dust collector, welding wire support, solder support and dust removal support are all fixedly connected on the top surface of the mobile seat, the solder storage cylinder is placed on the solder support, the welding wire reel is placed on the welding wire support, and the dust collector is fixed on the dust collector. On the bracket; the dust collector has a square horn structure, on which there is a horn-shaped collection cover and joints, and the joints of the dust collector are connected to the welding fume dust collector through the connecting pipe; the burner support is fixedly connected to the side elevation of the mobile seat On the top, the clamping seat is fixedly connected to the burner support through the fastening nut, and the burner is placed on the clamping seat through the vertical steel pipe set on it, and is fixed with a set screw; the hollow shaft and the steel The nail brushes are fixed together, the hollow shaft is provided with an internal thread, the screw is placed in the internal thread of the hollow shaft and forms a spiral pair, the hollow shaft is placed in the hole system of the moving seat, and passes through the long strip of the moving seat Gap, the lance is fixedly connected to the hollow shaft to realize the circumferential positioning of the hollow shaft, and the two limit switches are set on the moving seat to limit the moving distance of the lance along the axis of the hollow shaft; the transition plate is fixed on the moving seat The end face of the rectangular boss, the fourth motor is fixed on the transition plate, and is connected with the lead screw; the welding wire guide plate is fixed on the moving seat, and several welding wire guides are placed on it; the pinch bracket is fixed on the moving seat, The passive pinch wheel is arranged on the pinch bracket, and the position of the passive pinch wheel in the height direction can be adjusted by adjusting the screw; the fifth motor is arranged on the pinch bracket, and the active pinch wheel is arranged on the extended shaft section.

The base seat is a "T"-shaped member as a whole; two T-shaped slots are arranged at one end of the transverse section of the "T"-shaped member, and a first rectangular Groove, two first rectangular guide rails are provided on the outside of the two T-shaped slots, and two key slots and a combination hole group are provided at the other end of the transverse section of the "T"-shaped member; in the "T" Two rectangular guide rails are arranged on the vertical section of the shaped member, a joint surface is arranged at the outer end of the vertical section, and a second rectangular groove is arranged at the center of the two rectangular guide rails.

The lead screw of the working device is supported in the second rectangular groove of the base through the first bearing seat and the second bearing seat of the working device; The second motor of the working device is connected with the lead screw of the working device.

The bedside box is composed of a motor, two bearings, a spacer, a round nut, a connecting shaft, two flanges and a box body; the box body is a box-shaped component, and its bottom surface is provided with two convex keys and a handle The combination hole group is provided with a rectangular boss on one end surface of the upper part of the box body, and a through hole system is arranged at the center of the rectangular boss; the connecting shaft is a stepped shaft with a large disc at one end, and an inner hole at the other end , the connecting shaft is supported in the through-hole system of the box body through two bearings provided on it, and is fixedly connected to the outer end surface of the through-hole system of the box body through two flanges, so as to realize the axial fixation of the connecting shaft. The sleeve is arranged between the two bearings; the motor is placed in the inner hole of the connecting shaft through the extended shaft section set on it to realize the connection with the connecting shaft, and the motor is fixedly connected to the rectangular boss of the box.

The two convex keys arranged on the bedside box are placed in the two key grooves of the base, and the bedside box is fixedly connected with the base through the combination hole group provided on it and the combination hole group of the base.

The six-jaw chuck is mainly composed of three centering jaws, three screw rods, three auxiliary jaws, the chuck body, three baffle plates, a support frame, three bevel gear shafts, a bevel gear disc, a second It is composed of a bearing, a connecting shaft, a second bearing, three pressure plates and an end cover.

The chuck body is a hollow rotating body, one end is provided with an end plate, the other end is provided with a first joint surface and a second joint surface, and an axial round hole is provided in the center of the end plate, three T-shaped The grooved slide rail and the three rectangular guide rails are all arranged on the end plate, and are evenly distributed in a staggered circle on the end plate. There are round holes and semicircular holes at both ends of each rectangular guide rail, and cylindrical holes outside the chuck body. There are three radial round holes evenly distributed on the surface; the support frame is an integral structure of a rotating body, which is composed of a flange, a bearing sleeve and six webs connecting the two. The three radial holes, the first bearing hole and the second bearing hole; the two ends of the bevel gear shaft are provided with the first journal and the second journal, the middle section is provided with the bevel gear, and the second shaft A wrench interface with a square hole is arranged on the outer end surface of the neck; the bevel gear disk is a disk-shaped structure, and plane ring threads and bevel teeth are respectively arranged on the disk surfaces at both ends.

There are incomplete plane threads on the centering jaws, and the three centering jaws are respectively placed in the three T-slot slide rails set on the chuck body, and through the incomplete plane threads set on it and the bevel gear disc The plane ring thread set on the top forms a spiral pair; the two ends of the screw are provided with a first journal and a second journal, the middle section is an external thread, and a wrench interface with a square hole is provided on the outer end surface of the second journal; the auxiliary claw The bottom surface is provided with half internal threads; the internal threads provided on the three screws respectively form a screw pair with the half internal threads provided on the three auxiliary jaws; the first journals provided on the three screws are respectively arranged on the chuck body. In the three round holes, the second journals set on the three screws are respectively placed in the three semi-circle holes set on the chuck body, and are respectively fixed with three pressure plates; the connecting shaft is set on the bevel gear plate, And solidly welded together with it, the first bearing and the second bearing are arranged on the connecting shaft, and the combination formed by the connecting shaft and the bevel gear is supported on the first bearing hole and the second bearing hole provided on the support frame through the first bearing and the second bearing In the second bearing hole, and through the end cover to achieve axial fixation, the support frame is placed and fixed on the first joint surface set on the chuck body; the first journals set on the three bevel gear shafts are respectively placed on the support In the three radial round holes set on the frame, the second journals set on the three bevel gear shafts are respectively placed in the inner holes set on the three baffles, and the three baffles are connected with the diameters set on the chuck body. Fastened to the end face of the round hole.

The six-jaw chuck is placed together with the large disk arranged on the connecting shaft of the bedside box through the second joint surface of the chuck body provided thereon and realizes the fixed connection with the bedside box.

The tailstock top device is mainly composed of a top, a sliding shaft, a stuffy cover, a base seat, a two-speed motor, a stop pawl, a rack, a dustproof tube, an intermediate flange, a flange cover, a hand wheel, two second One angular contact ball bearing, transmission shaft, first worm gear, first worm screw, two second angular contact ball bearings, gear, second worm gear, threaded push rod, retaining ring, first thrust bearing, second thrust bearing, sleeve Cylinder, countersunk head feather key, flange, two double-row self-aligning roller bearings, through cover, two third angular contact ball bearings, the second worm, hook head feather key and cylindrical pin.

The sliding shaft is an optical shaft, one end is provided with a counterbore, the other end is provided with a Morse taper hole, and a keyway is provided on the outer circular surface in the middle; The rear position is provided with the first hole system and the second hole system in a staggered space, the first rectangular guide rail and the second rectangular guide rail are arranged on the bottom side, and the third hole system in a staggered space is arranged on the upper part. and the fourth hole system, lug seats are arranged on the rear facade of the foundation seat; the second worm wheel shown has an internal thread in its inner hole, an outer end surface and an inner stop at one end, and a journal at the other end ; The threaded push rod is provided with an externally threaded shaft section at one end, a keyway is provided on the externally threaded shaft section, and an annular rib and a journal are provided at the other end; the sleeve is a hollow cylinder structure , which is provided with a counterbore, an inner hole, and an end face shaft section; a stop tooth is provided on the stop pawl, and the stop pawl is placed on the ear seat of the base seat through a cylindrical pin.

The first worm is supported in the first hole set on the foundation seat through two first angular contact ball bearings, and is connected with the two-speed motor at the extended shaft section of the first worm, and the two-speed motor is fixedly connected to the foundation seat; The shaft is supported by two second angular contact ball bearings in the second hole set on the base, and the first worm gear and gear are arranged in the middle of the transmission shaft, which are fixedly connected with the transmission shaft; the first worm and the first worm gear A worm gear pair is formed, and a gear and a rack form a rack and pinion pair.

The first thrust bearing is placed on the journal provided by the threaded push rod and placed in the counterbore provided by the sliding shaft. The axial fixed connection between the rod and the sliding shaft; the sliding shaft is placed in the inner hole of the sleeve, the countersunk feather key is placed in the counterbore of the sleeve, and forms a sliding pair with the keyway of the sliding shaft; the second worm gear The internal thread provided on it is placed on the external threaded shaft section provided by the threaded push rod to form a screw pair, the journal provided by the second worm gear is placed in the inner hole provided by the flange cover, the second thrust bearing and the second worm gear The set inner spigots are all placed on the end face shaft section of the sleeve, and the outer end face of the inner spigot is placed on the end face of the second thrust bearing; the sleeve is supported on the second thrust bearing set by the base through two double-row self-aligning roller bearings. Inside the four-hole system; the flange cover and the flange plate are fixedly connected to the two outer end faces of the fourth hole system of the base; the middle flange is provided with a keyway, and a hook head slide key is placed on it, and the hook head slide key The working surface is placed in the keyway set by the threaded push rod to form a sliding pair, the middle flange is fixed on the flange cover; the dust-proof cylinder is fixed on the middle flange; the top is placed on the Morse taper hole set by the sliding shaft inside; the second worm is placed in the third hole set on the foundation seat through two third angular contact ball bearings, and is fixedly connected to the two outer end surfaces of the third hole system of the foundation seat through a blind cover and a transparent cover to realize the second The worm is fixed in the axial direction; the second worm and the second worm wheel form a worm gear pair; the middle flange is provided with a keyway, and the hook head sliding key is arranged in the keyway, and the working surface of the hook head sliding key is arranged in the keyway provided by the threaded push rod Inside.

The rack set on the top device of the tailstock is placed in the first rectangular groove of the base, and is fixedly connected with the base, the first rectangular guide rail and the second rectangular guide rail of the base set on the top device of the tailstock are placed on the base In the two first rectangular guide rails arranged on the seat, the stop teeth of the stop pawls arranged on the top device of the tailstock are engaged with the rack.

The beneficial effects of the present invention are:

1. A six-jaw chuck is used to clamp the workpiece, and its centering mechanism can realize fast clamping of shaft parts, and its auxiliary clamping mechanism can realize reliable clamping function of the workpiece, and the clamping stress of a single clamping point is small , the deformation of the workpiece is small;

2. The top tailstock device adopted can be adjusted to the station quickly and quickly, and the installation process is quick and convenient. Under the double action of the worm gear and worm pair and the screw pair booster mechanism, the labor intensity of the operator can be reduced. Through the worm gear and worm pair and The screw pair is double-locked, and the lock is firm when the top is working;

3. With complete functions, it can realize submerged arc automatic surfacing, preheating, dust removal, and welding surface cleaning functions;

4. Integrate the functions of surfacing, preheating, welding smoke removal, and welding surface cleaning into the working head to make it compact, energy-saving and environmentally friendly;

5. The single-column beam structure is adopted, and the main sliding guide surface is above the welding spot, which is beneficial to the protection and maintenance of the equipment.

Description of drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a three-dimensional schematic view of the base of the present invention.

Fig. 3 is a schematic perspective view of the bedside box of the present invention.

Fig. 4 is a perspective view of the six-jaw chuck of the present invention.

Fig. 5 is a three-dimensional exploded schematic diagram (1) of the six-jaw chuck of the present invention.

Fig. 6 is a three-dimensional exploded schematic diagram (2) of the six-jaw chuck of the present invention.

Fig. 7 is a schematic perspective view of the front side of the tailstock center of the present invention.

Fig. 8 is a three-dimensional schematic view of the tailstock apex according to the present invention.

Fig. 9 is a three-dimensional exploded schematic view of the tailstock tip of the present invention.

FIG. 10 is a schematic perspective view of A-A in FIG. 7 .

Fig. 11 is a schematic perspective view of the working device of the present invention.

Fig. 12 is a three-dimensional exploded view of the column assembly of the working device of the present invention.

Fig. 13 is a three-dimensional schematic view of the beam assembly of the working device of the present invention.

Fig. 14 is a schematic perspective view of the working part of the working device of the present invention.

Fig. 15 is an exploded schematic view of the three-dimensional part of the working part of the working device of the present invention.

detailed description

Embodiment 1: Please refer to Fig. 1, the present invention is made up of base 1, headstock 2, six-jaw chuck 3, tailstock top device 4, working device 5, bedside box 2, tailstock top 4 , The working device 5 is arranged on the foundation base 1, and the six-jaw chuck 3 is arranged on the headstock; the surfacing roll J1 is arranged between the six-jaw chuck and the top device of the tailstock.

Please refer to Figure 2, the base 1 is a "T"-shaped member as a whole; two T-shaped grooves 11 are arranged at one end of the transverse section of the "T"-shaped member, and two T-shaped A first rectangular groove 12 is provided at the center of the slot 11, two first rectangular guide rails 13 are provided on the outside of the two T-shaped slots 11, and two Keyway 17 and a joint hole group 18; two rectangular guide rails 14 are provided on the vertical section of the "T" shaped member, and a joint surface 16 is provided at the outer end of the vertical section, and at the center position of the two rectangular guide rails 14 A second rectangular groove 15 is provided.

Please refer to shown in Fig. 3, described bedside box 2 is made up of servo motor 21, two bearings 22, spacer 23, round nut 24, connecting shaft 25, two flanges 26 and box body 27; The body 27 is a box-shaped member, and its bottom surface is provided with two convex keys 271 and a combination of hole groups 272, and a rectangular boss 273 is arranged on one end surface of the upper part of the box body, and a through-hole system is arranged at the center of the rectangular boss 273. 274; the connecting shaft 25 is a stepped shaft with a large disk 251 arranged at one end, and an inner hole 252 is provided at the other end, and the connecting shaft 25 is supported in the through-hole system 274 of the casing 27 by two bearings 22 provided thereon. And through two flanges 26, it is fixed on the outer end surface of the through hole system 274 of the box body 27, so as to realize the axial fixation of the shaft 25, and the spacer 23 is arranged between the two bearings; the servo motor 21 is arranged on it The overhanging shaft section 211 is placed in the inner hole 252 of the connecting shaft 25 to realize the connection with the connecting shaft 25 , and the servo motor 21 is fixedly connected to the rectangular boss 273 of the box body 27 .

Please refer to Fig. 1, Fig. 2, shown in Fig. 3, two protruding keys 271 provided on the bedside box 2 are placed in the two key grooves 17 of the base 1, and the bedside box 2 is assembled through the handle holes provided thereon. 272 and the combination hole group 18 of the base seat 1 realize the solid connection with the base seat 1.

Please refer to Figures 4 to 6, the six-jaw chuck 3 is mainly composed of three centering jaws 31, three screw rods 32, three auxiliary jaws 33, a chuck body 34, and three baffles. 35. A support frame 36, three bevel gear shafts 37, a bevel gear disc 38, a first bearing 39, a connecting shaft 310, a second bearing 311, three pressing plates 312 and an end cover 313 are formed.

The chuck body 34 is a hollow rotating body, one end is provided with an end plate 341, the other end is provided with a first joint surface 348 and a second joint surface 349, and an axial circular hole is provided at the center of the end plate 341 342, three T-shaped groove slide rails 343 and three rectangular guide rails 344 are all arranged on the end plate 341, and are evenly distributed on the end plate 341 in a staggered circle, and are respectively provided with circles at both ends of each rectangular guide rail 344. Holes 345 and semi-circular holes 346 are uniformly distributed with three radial circular holes 347 on the outer cylindrical surface of the chuck body 34; the support frame 36 is an integral structure of a rotating body, which is composed of a flange 361, a bearing sleeve 362 and a connecting The six webs 363 of the two are composed of three radial circular holes 3621, the first bearing hole 3622 and the second bearing hole 3623 uniformly distributed on the bearing sleeve 362; the two ends of the bevel gear shaft 37 The head is provided with a first journal 371 and a second journal 373, the middle section is provided with a bevel gear 372, and a wrench interface 374 with a square hole is provided on the outer end surface of the second journal 373; the bevel gear disc 38 is a disc-shaped structure , the two ends of the disc are respectively provided with a plane ring thread 381 and a bevel tooth 382.

The centering jaws 31 are provided with incomplete plane threads 3101, and the three centering jaws 1 are respectively arranged in the three T-shaped groove slide rails 343 provided on the chuck body 34, and pass through the incomplete planes provided thereon. The thread 3101 forms a spiral pair with the plane annular thread 381 provided on the bevel gear disc 38; the two ends of the screw rod 32 are provided with a first journal 321 and a second journal 322, and the middle section is an external thread 323, which is outside the second journal 322. The end face is provided with a wrench interface 324 with a square hole; the bottom surface of the auxiliary claw 33 is provided with a half internal thread 331; Vice: the first journals 321 provided on the three screw rods 32 are respectively arranged in the three circular holes 345 provided on the chuck body 34, and the second journals 322 provided on the three screw rods 32 are respectively arranged in the chuck body 34 In the three semicircular holes 346 provided on the top, and fix it respectively with three pressure plates 312; the connecting shaft 310 is arranged on the bevel gear plate 38, and is solidly welded together with it, and the first bearing 39 and the second bearing 311 are arranged on the connecting shaft. On the shaft 310, the combination formed by the connecting shaft 310 and the bevel gear 38 is supported in the first bearing hole 3622 and the second bearing hole 3623 provided on the support frame 36 through the first bearing 39 and the second bearing 311, and through the end cover 313 to achieve axial fixation, the support frame 36 is placed and fixedly connected to the first joint surface 348 provided on the chuck body 34; the first journals 371 provided on the three bevel gear shafts 37 are respectively placed on the support frame 36 In the three radial circular holes 3621 provided, the second journals 373 provided on the three bevel gear shafts 37 are respectively arranged in the inner holes 351 provided on the three baffles 35, and the three baffles 35 are connected with the chuck body. The end faces of the radial circular holes 347 provided on the 34 are fixedly connected.

Please refer to Fig. 1, Fig. 3, Fig. 4, shown in Fig. 6, the big circle that the second joint surface 349 of the chuck body 34 of the six-jaw chuck 3 is arranged on it and the joint shaft 25 of the bedside box 2 are provided with The discs 251 are arranged together and realize the solid connection with the bedside box 2 .

Please refer to Fig. 7 to Fig. 10, described tailstock top device 4 is mainly composed of top 41, slide shaft 42, stuffy cover 43, base seat 44, two-speed motor 45, stop pawl 46, rack 47, Dust-proof cylinder 48, intermediate flange 49, flange cover 410, handwheel 411, two first angular contact ball bearings 412, transmission shaft 413, first worm wheel 414, first worm 415, two second angular contact balls Bearing 416, gear 417, second worm gear 418, threaded push rod 419, retaining ring 420, first thrust bearing 421, second thrust bearing 422, sleeve 423, countersunk head sliding key 424, flange plate 425, two double Column self-aligning roller bearing 426, transparent cover 427, two third angular contact ball bearings 428, the second worm screw 429, hook head sliding key 430 and cylindrical pin 431 are formed.

The sliding shaft 42 is an optical axis, one end is provided with a counterbore 4201, the other end is provided with a Morse taper hole 4203, and the middle outer circular surface is provided with a keyway 4202; the base seat 44 is a box-shaped structure , the first hole system 441 and the second hole system 442 in a staggered state are arranged at the lower part and the back position, the first rectangular guide rail 443 and the second rectangular guide rail 444 are arranged on the bottom side, and the upper part is provided with The third hole system 445 and the fourth hole system 446 in a staggered space are provided with an ear seat 447 on the rear facade of the base seat 44; the second worm wheel 418 shown has an internal thread 4181 in its inner hole, and one end An outer end face 4182 and an inner spigot 4184 are provided, and a journal 4183 is provided at the other end; the threaded push rod 419 has an externally threaded shaft section 4192 at one end, and a keyway 4191 is provided on the externally threaded shaft section 4192, and a keyway 4191 is provided on the other end. One end is provided with an annular rib 4193 and a journal 4194; the sleeve 423 is a hollow cylinder structure, on which are provided with a counterbore 4231, an inner hole 4233, and an end shaft section 4232; the stop pawl 46 is provided with The stop tooth 461 and the stop pawl 46 are placed on the ear seat 447 of the base seat 44 through the cylindrical pin 431 .

The first worm 415 is supported in the first hole system 441 provided by the base seat 44 through two first angular contact ball bearings 412, and is connected with the two-speed motor 45 on the extended shaft section of the first worm 415, and the two-speed motor 45 is fixed. Connected to the base 44; the transmission shaft 413 is supported in the second hole system 442 provided on the base 44 through two second angular contact ball bearings 416, and a first worm wheel 414 and a gear 417 are arranged in the middle of the transmission shaft 413. The two are fixedly connected with the transmission shaft 413; the first worm 415 and the first worm wheel 414 form a worm gear pair, and the gear 417 and the rack 47 form a rack and pinion pair.

The first thrust bearing 421 is placed on the journal 4194 provided by the threaded push rod 419, and placed in the counterbore 4201 provided by the slide shaft 42, the retaining ring 420 acts on the annular rib 4193 provided by the threaded push rod 419, and is connected with The sliding shaft 42 is fixedly connected to form an axial fixed connection between the threaded push rod 419 and the sliding shaft 42; the sliding shaft 42 is placed in the inner hole 4233 provided by the sleeve 423, and the countersunk sliding key 424 is placed in the counterbore provided by the sleeve 423 4231, and form a sliding pair with the keyway 4202 provided on the sliding shaft 42; the second worm gear 418 is arranged on the external thread shaft section 4192 provided on the threaded push rod 419 through the internal thread 4181 provided thereon to form a helical pair, and the second worm gear The journal 4184 provided by 418 is placed in the inner hole 4101 provided by the flange cover 410, the inner stop 4184 provided by the second thrust bearing 422 and the second worm wheel 418 are all placed on the end face shaft section 4232 provided by the sleeve 423, and The outer end surface 4183 of the inner stop 4184 is placed on the end surface of the second thrust bearing 422; the sleeve 423 is supported in the fourth hole system 446 provided by the base 44 through two double-row self-aligning roller bearings 426; the flange cover 410 and the method The blue plates 425 are respectively fixedly connected to the two outer end surfaces of the fourth hole system 446 of the base 44; the middle flange 49 is provided with a keyway 491, on which the hook head sliding key 430 is arranged, and the working surface of the hook head sliding key 430 Placed in the keyway 4191 provided by the threaded push rod 419 to form a sliding pair, the middle flange 49 is fixedly connected to the flange cover 410; the dustproof tube 48 is fixedly connected to the middle flange 49; the top 41 is placed on the sliding shaft 42 to set Morse taper hole 4203; the second worm 429 is placed in the third hole system 445 provided by the base base 44 through two third angular contact ball bearings 428, and is fixedly connected to the base base 44 through the blind cover 43 and the transparent cover 427 The two outer end surfaces of the third hole system 445 realize the axial fixation of the second worm 429; the second worm 429 and the second worm wheel 418 form a worm gear pair; the middle flange 49 is provided with a keyway 491, and a hook is arranged in the keyway The head sliding key 430 and the working surface of the hook head sliding key 430 are arranged in the key groove 4191 provided by the threaded push rod 419 .

Please refer to Fig. 1, Fig. 2, Fig. 7 and Fig. 8, the rack 47 provided on the tailstock top device 4 is placed in the first rectangular groove 12 of the base 1, and is fixedly connected with the base 1, the tailstock The first rectangular guide rail 443 and the second rectangular guide rail 444 of the base seat 44 provided on the seat top device 4 are placed in the two first rectangular guide rails 13 provided on the base seat 1, and the stop pawl provided on the tailstock top device 4 The stop tooth 461 of 46 is engaged with the rack 47.

11 to 15, the working device 5 is composed of a column assembly 51, a beam assembly 52, and a working head 53. The beam assembly 52 is arranged on the column assembly 51, and the working head 53 is arranged on the beam assembly 52. .

The column assembly 51 is composed of a first bearing block 511, a vertical screw 512, a second bearing block 513, a transition plate 514, a first motor 515, a column 516, two fixed pulleys 517, two cylindrical pins 518, a pulley Bracket 519, steel wire rope 5110, ring screw 5111, counterweight 5112, second motor 5113, transition pad 5114, first bearing seat 5115, screw nut seat 5116, second bearing seat 5117 and lead screw 5118; There is a vertical groove 5161, a rectangular stopper 5162 is provided on the upper surface of the vertical groove 5161, a vertical circular through hole 5163 is provided at the center of the top surface of the column 516, a pair of joint hole groups 5164 are provided on the top surface, and a set of joint holes 5164 is provided on the top surface of the column. Two rectangular guide rails 5165 are provided; the vertical screw 512 is supported in the vertical groove 5161 of the column 516 through the first bearing seat 511 and the second bearing seat 513, and the transition plate 514 is fixedly connected in the rectangular notch 5162 of the column 516. A motor 515 is fixedly connected to the transition plate 514, and is connected with the vertical screw 512; two fixed pulleys 517 are placed on the pulley bracket 519 through two cylindrical pins 518; 5110 is connected with eyebolt 5111 and walks around two fixed pulleys 517; pulley bracket 519 is fixedly connected on the joint hole group 5164 of column 516;

The beam assembly 52 is composed of a third motor 521, a transition backing plate 522, a horizontal lead screw 523, a beam 524, two bearing housings 525, ring screws 526 and nuts 527; the beam 524 is in the shape of a "T" as a whole, It is provided with a rectangular horizontal channel 5241 and a vertical rectangular channel 5242; the horizontal lead screw 523 is supported in the rectangular horizontal channel 5241 of the beam 524 through two bearing seats 525, and the transition pad 522 is fixedly connected to the rectangular horizontal channel. The end face of the groove 5241; the third motor 521 is fixedly connected to the transition backing plate 522, and is connected with the horizontal lead screw 523; the eyebolt 526 is fixedly connected to the beam 524; the screw nut 527 is fixedly welded to the vertical rectangular through hole of the beam 524 Inside; the crossbeam assembly 52 is placed on the column 516 of the column assembly 51 through the vertical rectangular through hole 5242 of the crossbeam 524, and the screw nut 527 on the beam assembly 52 forms a screw pair with the vertical screw 512 of the column assembly 51, and the crossbeam assembly 52 The eyebolt 526 is connected with the wire rope 5110 of the column assembly 51 .

The working head 53 is composed of two pressing plates 531, a welding fume remover 532, a welding wire support 533, a welding wire reel 534, a dust collector 535, a connecting pipe 536, a solder storage cylinder 537, a moving seat 538, a burner 539, a burner Support 5310, fastening nut 5311, set screw 5312, clamping seat 5313, fourth motor 5314, transition plate 5315, two limit switches 5316, lead screw 5317, ram 5318, hollow shaft 5319, nail brush 5320, discharge pipe 5321, welding wire guide plate 5322, welding wire conduit 5323, pinch support 5324, adjustment screw 5325, fifth motor 5326, passive pinch wheel 5327, active pinch wheel 5328, solder support 5329 and dust removal support 5330; The moving seat 538 is a rectangular frame with an opening on one side, on which a top surface 5381 and an inner cavity wall 5382 are arranged. The inner cavity wall 5382 is provided with a thread female seat 5383, and the bottom surface of the moving seat 538 is provided with a rectangular boss 5384. 5384 is provided with a hole system 5385, and a strip-shaped gap 5386 is provided on the bottom surface of the rectangular boss 5384; One end of the vertical section steel pipe 5392 is provided with a joint 5391, and a plurality of burners 5394 are provided on the horizontal section steel pipe 5393; two pressure plates 531 are fixedly connected to the moving seat 538, forming a rectangular inner guide rail with the inner cavity of the moving seat 538; The dust remover 532, the welding wire support 533, the solder support 5329, and the dust removal support 5330 are all fixedly connected on the top surface 5381 of the mobile seat 538, the solder storage cylinder 537 is placed on the solder support 5329, the welding wire reel 534 is placed on the welding wire support 533, and the dust The collector 535 is fixedly connected to the dust removal bracket 5330; the dust collector 535 has a square horn structure, on which a horn-shaped collection cover 5351 and a joint 5352 are arranged, and the joint 5352 of the dust collector 535 connects with the welding fume dust collector 532 through the connecting pipe 536 connected; the burner support 5310 is fixedly connected to the side elevation of the movable seat 538, the clamping seat 5313 is fixedly connected to the burner support 5310 through the fastening nut 5311, and the burner 539 passes through the vertical section steel pipe 5392 arranged on it It is placed on the clamping seat 5313 and fixed with a set screw 5312; the hollow shaft 5319 is fixedly connected with the nail brush 5320, the hollow shaft 5319 is provided with an internal thread 53191, and the lead screw 5317 is placed on the hollow shaft The internal thread 53191 of 5319 forms a spiral pair, and the hollow shaft 5319 is placed in the hole system 5385 of the moving seat 538, and passes through the elongated gap 5386 of the moving seat 538, and the lance 5318 is fixedly connected to the hollow shaft 5319. To realize the circumferential positioning of the hollow shaft 5319, two limit switches 5316 are arranged on the moving seat 538, which limits the direction of the lance 5318 along the axis of the hollow shaft 5319. The transition plate 5315 is fixedly connected to the end face of the rectangular boss 5384 of the moving seat 538, and the fourth motor 5314 is fixedly connected to the transition plate 5315, and is connected with the lead screw 5317; the welding wire guide plate 5322 is fixedly connected to the moving seat 538 , on which several welding wire conduits 5323 are placed; the pinch bracket 5324 is fixedly connected to the moving seat 538, the passive pinch wheel 5327 is placed on the pinch bracket 5324, and the height direction of the passive pinch wheel 5327 can be adjusted by adjusting the screw 5325 Position; the fifth motor 5326 is arranged on the pinch bracket 5324, and the active pinch wheel 5328 is arranged on its extended shaft section.

Please refer to Fig. 1, Fig. 2, Fig. 11 and Fig. 12, the lead screw 5118 of the working device 5 is supported on the second rectangular groove of the base 1 through the first bearing seat 5115 and the second bearing seat 5117 of the working device 5 15; the transition backing plate 5114 of the working device 5 is fixedly connected to the joint surface 16 of the base 1, on which the second motor 5113 of the working device is placed, and the motor is connected with the lead screw 5118 of the working device.

The working process and principle of the present embodiment are as follows:

This embodiment is composed of a base, a bedside box, a six-jaw chuck, a tailstock top device, and a working device, wherein the bedside box, the six-jaw chuck, and the tailstock top device form a workpiece clamping device, which is mainly responsible for workpiece clamping. The clamping work requires precise positioning, reliable clamping, and fast clamping; the working device mainly completes the functions of surfacing welding, preheating, dust removal, and welding surface cleaning of the workpiece. The headstock device is connected with the six-jaw chuck, and a servo motor is provided to provide power for the rotation of the roll.

The six-jaw chuck uses the three-jaw self-centering mechanism as the centering and positioning mechanism for the workpiece. When using it, first move the three auxiliary jaws and the three centering jaws back to a suitable position, and place the workpiece in the three-centering jaws , because the bevel teeth set on the bevel gear shaft mesh with the bevel teeth set on the bevel gear plate, through the wrench interface set on the bevel gear shaft, manually turning the bevel gear shaft can drive the bevel gear plate to rotate, and the bevel gear plate The plane threads on the gear plate and the incomplete plane threads on the three centering jaws form a spiral pair. When the bevel gear rotates, it can drive the three centering jaws to move forward at the same speed and at the same distance. Centering and clamping of workpieces. When loosening the workpiece, only the reverse rotation of the wrench is required. In order to achieve reliable clamping of the workpiece and increase the clamping and carrying capacity of the device, after using three centering jaws to center the workpiece and initially clamp it, the workpiece can be assisted by three auxiliary jaws. Clamp. The six-jaw chuck is also provided with three auxiliary jaws. The semi-internal threads on the three auxiliary jaws and the external threads on the three screws respectively form spiral pairs. When one of the screw rods is rotated, due to the The screw rod is fixed in the axial direction, and it can drive an auxiliary claw connected to it to advance or retreat independently, so as to realize the clamping or loosening of the workpiece.

The tailstock top device is driven by a two-speed motor, through the first worm and worm gear pair to realize the speed change and change the transmission direction, and transmit the motion to a gear coaxial with the first worm gear, and the gear is formed with the rack set on the ground platform. The rack and pinion mechanism, because the rack is fixed, can realize the movement and power transmitted by the two-speed motor, and drive the entire top tailstock device to advance or retreat in the track. After the top tailstock device approaches the workpiece and reaches a suitable working position, engage the stop pawl with the rack and approach them in reverse, and then connect the top tailstock device with the ground platform to prevent the top tailstock device from retreating. The joint action of the worm gear pair and the screw pair is used to realize the forward and backward movements of the top. Since both the worm gear pair and the screw pair have a force-increasing function, the purpose of reducing the labor intensity of the operator can be achieved. In addition, the worm gear pair and the screw pair It also has a locking function, which can realize reliable locking when working at the top. The mechanism is equipped with a hand wheel, which uses manual operation as the power input, and transmits the motion to the second worm wheel through the second worm gear pair. Because the second worm wheel is axially fixed, the internal thread set in the inner hole and the external thread set in the threaded push rod A spiral pair is formed, and the sliding pair formed by the keyway on the threaded push rod and the hook key restricts the rotation of the threaded push rod, so that the threaded push rod can only slide forward and backward, so the power input by the hand wheel can realize the movement of the threaded push rod. Move back and forth; the threaded push rod is supported in the hole provided on the sliding shaft through the first thrust bearing, and the threaded push rod is axially connected with the sliding shaft through a retaining ring, which makes the threaded push rod move forward and backward under the action of the handwheel , the sliding shaft moves back and forth accordingly; the sliding shaft is placed in a sleeve, and the sleeve is supported on the base by two double-row self-aligning roller bearings. The top is set in the Morse taper hole set at the front end of the sliding shaft. Therefore, when the top is pressed against the workpiece, the sliding shaft and the sleeve will rotate together with the workpiece; because the first thrust bearing is set between the threaded push rod and the sliding shaft, A second thrust bearing is arranged between the sleeve and the second worm gear, and the rotational movement of the sliding shaft together with the sleeve will not drive the threaded push rod and the second worm gear to produce rotational motion.

The working device integrates the functions of surfacing, preheating, dust removal, and welding surface cleaning into the working head, and completes the corresponding functions through the movement of different functional components on the working head. In order to realize the surfacing function, the working head should be able to adjust the radial direction of the roll and feed the roll along the axial direction, as well as the wire feeding movement of the welding wire. For this reason, the first motor is set to provide power for the position adjustment of the welding point in the radial direction of the roll. The first motor drives a vertical screw to rotate, and the vertical screw cooperates with the nut set on the beam to form a spiral pair. When the first motor moves It can drive the beam to move up and down, and the working head is set on the beam, and the working head will move up and down along with the beam to adjust the height of the welding point and realize the function of adjusting the working head along the radial direction of the roll; By setting the second motor to provide power for the feed movement of the welding point along the axial direction of the roll, the second motor transmits the motion to the moving seat through a screw pair formed by a horizontal screw and a screw nut arranged on the moving seat to realize The feed movement of the welding point along the axial direction of the roller; the fourth motor is set to provide power for the wire feeding movement of the welding wire, and the fourth motor transmits the motion to the active pinch wheel set on the shaft end, and then through the active pinch wheel The pinch gap formed with the passive pinch wheel can pinch the welding wire. In order to realize the preheating function before the roll surfacing, a burner is installed, and the gas pipe is connected to the joint at the end of the steel pipe in the vertical section of the burner. , A flame is generated to preheat the roll. The burner can adjust the combustion angle and the distance between the burner nozzle and the outer cylindrical surface of the roll. By loosening the fastening nut set on the burner support, the clamping base and the burner can realize the rotation around the center line of the clamping base, thereby realizing Adjust the combustion angle of the burner. After the adjustment is in place, tighten the fastening nut to fix it; by loosening the fastening screw, the vertical steel pipe of the burner can move back and forth in the mounting hole set by the clamping seat, so as to adjust the distance between the burner nozzle and the outside of the roll. Adjust the distance between the cylindrical surface and tighten the set screw to fix it. In order to achieve the dust removal function of the working device, a dust collector is provided. The dust collector has a square horn structure, and a horn-shaped collection cover and a joint are arranged on it. The joint is connected to a vacuum cleaner through a hose to suck the dust generated in the welding area. Go, the dust collector is small in size, but because it is set on the moving seat of the working head, it can move with the working head, so the dust suction effect can be guaranteed. In order to realize the welding surface cleaning function of this embodiment, a steel nail brush is provided, and the steel nail brush can move forward and backward relative to the outer cylindrical surface of the roll. For this reason, a third motor is provided, and the power generated by the third motor Drive the lead screw connected with it to rotate, the lead screw and the hollow shaft form a helical pair, the hollow shaft cannot rotate under the restriction of the ram, but can only move forward and backward, and the steel nail brush is fixedly connected with the hollow shaft, so through the third The motor can realize the forward and backward telescopic movement of the steel nail brush relative to the roll surface. When the roll is in the welding working state, the steel nail brush retreats to the limit position and does not contact the surface of the roll; after welding a working stroke, the welding slag on the welding surface needs to be cleaned to improve the welding quality. Nail brush advances to proper working position. In order to limit the forward or backward position of the nail brush, two limit switches are provided, and the switching value is generated by the ram and its action to realize the on-off of the third motor power supply.

The working process of this embodiment is as follows:

Work step 1: Workpiece installation, start the second motor of the working device, make the working device retreat to a safe position, hoist the surfacing roll J1 to between the six-jaw chuck and the top device of the tailstock, and twist the automatic movement of the six-jaw chuck. The centering claw realizes the positioning and pre-clamping of the surfacing roll J1, starts the motor set by the tailstock top device, moves the tailstock top close to the workpiece, and meshes the stop claw with the rack correctly, and manually pre-tightens the workpiece , and then fasten the tailstock top device on the base seat, clamp the workpiece with the centering jaws and auxiliary jaws, press the top to tighten the workpiece, and complete the installation of the surfacing roll J1;

Working step 2: Start the first motor and the third motor set on the working device, adjust the working head to the starting position on the right side of the welding stroke, and then stop the first motor and the third motor; start the vacuum cleaner;

Working step 3: light the burner, start the motor installed on the bedside box to rotate the roll, preheat the roll, then strike the arc and turn on the welding powder switch, and start the third motor and the fifth motor set on the working device at the same time, Automatic submerged arc welding. Preheating and welding are carried out synchronously, and in the spatial position, the preheating position is in front of the welding position;

Working step 4: After welding a working stroke, the third motor and the fifth motor of the working device stop, the burner goes out, start the first motor and the third motor of the working device, adjust the working head to a suitable position, and then stop Turn the first motor and the third motor; then start the fourth motor, the steel nail brush stretches out and presses on the working surface of the roll; the roll rotates, starts the third motor, and drives the steel wire brush to move along the roll axis. After cleaning the welding surface, start the fourth motor to make the wire brush retreat to the limit position;

According to the thickness of surfacing welding, repeat the above work steps 2-4 to complete the whole surfacing welding work.

Claims (9)

1. A roll repair surfacing machine is characterized in that the surfacing machine is made up of a base seat, a headstock, a six-claw chuck, a tailstock top device, and a working device, and the headstock, the tailstock top, and the working device are all It is set on the base, and the six-jaw chuck is set on the bedside box; the working device is composed of a column assembly, a beam assembly, and a working head. The beam assembly is set on the column assembly, and the working head is set on the beam assembly; wherein: The column assembly is composed of the first bearing seat, the vertical screw, the second bearing seat, the transition plate, the first motor, the column, two fixed pulleys, two cylindrical pins, the pulley bracket, the steel wire rope, the ring screw, the counterweight, the second Composed of motor, transition plate, first bearing seat, screw nut seat, second bearing seat and lead screw; there is a vertical groove on the column, a rectangular spigot on the upper end of the vertical groove, and a The vertical circular through hole is provided with a combination hole group on the top surface, and two rectangular guide rails are provided outside the bottom surface of the column; the vertical screw is supported in the vertical groove of the column through the first bearing seat and the second bearing seat, and the transition The plate is fixed in the rectangular seam of the column, the first motor is fixed on the transition plate, and is connected with the vertical screw; the two fixed pulleys are placed on the pulley bracket through two cylindrical pins; the eye bolts are fixed on the counterweight On the top, the steel wire rope is connected to the lifting ring screw and bypasses two fixed pulleys; the pulley bracket is fixedly connected to the joint hole group of the column; the screw nut seat is arranged on the bottom surface of the column, and forms a spiral pair with the lead screw; The beam assembly is composed of a third motor, a transition plate, a horizontal lead screw, a beam, two bearing housings, ring screws and nuts; Rectangular through hole; the horizontal lead screw is supported in the rectangular horizontal channel of the beam through two bearing seats, and the transition backing plate is fixedly connected to the end face of the rectangular horizontal channel; the third motor is fixed on the transition backing plate and connected with the horizontal screw The connection is realized; the eyebolt is fixedly connected to the beam; the nut is welded in the vertical rectangular through hole of the beam; the beam assembly is placed on the column of the column assembly through the vertical rectangular through hole of the beam, and the nut on the beam assembly and The vertical screw of the column assembly forms a screw pair, and the eye screw of the beam assembly is connected with the wire rope of the column assembly; The working head is composed of two pressure plates, welding fume dust collector, welding wire holder, welding wire reel, dust collector, connecting pipe, solder storage cylinder, moving seat, burner, burner support, fastening nut, set screw, clamping Seat, fourth motor, transition plate, two limit switches, lead screw, plunger, hollow shaft, nail brush, discharge pipe, welding wire guide plate, welding wire guide, pinch bracket, adjusting screw, fifth motor, passive It is composed of pinch wheel, active pinch wheel, solder bracket and dust removal bracket; the moving seat is a rectangular frame with one side opening, on which there is a top surface, an inner cavity wall, a female seat on the inner cavity wall, and a bottom surface of the moving seat. There is a rectangular boss, a hole system is set on the rectangular boss, and a long gap is set on the bottom surface of the rectangular boss; the overall shape of the burner is "L" shape, which is welded by vertical steel pipes and horizontal steel pipes , a joint is provided at one end of the vertical section of the steel pipe, and a plurality of burners are provided on the horizontal section of the steel pipe; two pressure plates are fixedly connected to the moving seat, forming a rectangular inner guide rail with the inner cavity of the moving seat; welding fume dust collector, welding wire support , solder bracket, and dust removal bracket are all fixedly connected to the top surface of the mobile seat, the solder storage cylinder is placed on the solder bracket, the welding wire reel is placed on the welding wire bracket, and the dust collector is fixedly connected to the dust removal bracket; the dust collector is in a square shape Horn structure, on which there is a horn-shaped collection cover and joints. The joints of the dust collector are connected to the welding fume dust collector through the connecting pipe; Fixed on the burner support, the burner is placed on the clamping seat through the vertical steel pipe set on it, and is fixed with a set screw; the hollow shaft is fixedly connected with the steel nail brush, and the hollow shaft There is an internal thread on the top, the lead screw is placed in the internal thread of the hollow shaft and forms a spiral pair, the hollow shaft is placed in the hole system of the moving seat, and passes through the elongated gap of the moving seat, and the lance is fixedly connected to the hollow shaft. On the shaft, the circumferential positioning of the hollow shaft is realized. Two limit switches are set on the moving seat, which limits the moving distance of the ram along the axis of the hollow shaft; the transition plate is fixedly connected to the end surface of the rectangular boss of the moving seat, and the fourth motor It is fixed on the transition plate and connected with the lead screw; the welding wire guide plate is fixed on the moving seat, and several welding wire guides are placed on it; the pinch bracket is fixed on the moving seat, and the passive pinch wheel is placed on the pinch bracket On the top, the position of the passive pinch wheel in the height direction can be adjusted by adjusting the screw; the fifth motor is placed on the pinch bracket, and the active pinch wheel is placed on the extended shaft section. 2. The roller repairing welding machine according to claim 1, characterized in that: the base seat is a "T"-shaped member as a whole; two ends of the transverse section of the "T"-shaped member are arranged A T-shaped slot, a first rectangular groove is provided in the center of the two T-shaped slots, and two first rectangular guide rails are provided on the outside of the two T-shaped slots, and the transverse section of the "T"-shaped member The other end is provided with two keyways and a set of joint holes; two rectangular guide rails are provided on the vertical section of the "T" shaped member, and a joint surface is provided at the outer end of the vertical section, and at the center of the two rectangular guide rails The position is provided with a second rectangular groove. 3. According to the roll repair surfacing machine according to claim 1, it is characterized in that: the leading screw of the working device is supported in the second rectangular groove of the base seat by the first bearing seat and the second bearing seat of the working device; The transition backing plate of the device is fixedly connected to the joint surface of the base, on which the second motor of the working device is arranged, and the motor is connected with the leading screw of the working device. 4. according to the described roller repair surfacing welding machine of claim 1, it is characterized in that: described bedside box is made of motor, two bearings, spacer, round nut, connecting shaft, two flanges and box body Composition; the box body is a box-shaped component, and its bottom surface is provided with two convex keys and joint hole groups, and a rectangular boss is arranged on one end surface of the upper part of the box body, and a through-hole system is arranged at the center of the rectangular boss; The shaft is a stepped shaft with a large disc at one end, and an inner hole at the other end. The connecting shaft is supported in the through hole system of the box through two bearings on it, and is fixed in the through hole system through two flanges. The through hole of the box is on the outer end surface to realize the axial fixation of the connecting shaft, and the spacer is arranged between the two bearings; For shaft connection, the motor is fixedly connected to the rectangular boss of the box. 5. The roll repair surfacing machine according to claim 4, characterized in that: the two convex keys provided on the headstock are placed in the two key grooves of the base, and the headstock passes through the handle holes provided thereon The joint hole group of the group and the foundation seat realizes the fixed connection with the foundation seat. 6. The roll repair surfacing machine according to claim 1, characterized in that: the six-jaw chuck is composed of three centering jaws, three screw rods, three auxiliary jaws, the chuck body, three A baffle plate, a support frame, three bevel gear shafts, a bevel gear disc, a first bearing, a connecting shaft, a second bearing, three pressure plates and an end cover; the chuck body is a hollow rotating body, one end of which is There is one end plate, the other end is provided with the first joint surface and the second joint surface, and an axial round hole is set in the center of the end plate, three T-slot slide rails and three rectangular guide rails are set on the end plate , and are evenly distributed in a staggered circle on the end plate, round holes and semicircle holes are respectively arranged at both ends of each rectangular guide rail, and three radial round holes are evenly distributed on the outer cylindrical surface of the chuck body; the said The supporting frame is an overall structure of a rotating body, which is composed of a flange, a bearing sleeve and six webs connecting the two. On the bearing sleeve, there are three radial round holes uniformly distributed around the circumference, the first bearing hole and the second bearing hole. Two bearing holes; the two ends of the bevel gear shaft are provided with a first journal and a second journal, the middle section is provided with a bevel gear, and a wrench interface with a square hole is provided on the outer end surface of the second journal; the bevel gear The disc is a disc-shaped structure, and the two ends of the disc are respectively provided with plane ring threads and bevel teeth; the centering jaws are provided with incomplete plane threads, and the three centering jaws are respectively arranged on the three holes set on the chuck body. In a T-shaped groove slide rail, and through the incomplete plane thread set on it and the plane annular thread set on the bevel gear plate to form a spiral pair; the two ends of the screw are provided with a first journal and a second journal, and the middle section is External threads, a wrench interface with a square hole is set on the outer end surface of the second journal; half internal threads are set on the bottom surface of the auxiliary jaws; the internal threads set on the three screws are respectively connected with the half internal threads set on the three auxiliary jaws Form a screw pair; the first journals provided on the three screws are respectively placed in the three circular holes provided on the chuck body, and the second journals provided on the three screws are respectively arranged in the three circular holes provided on the chuck body. In the semi-circular hole, three pressure plates are used to fix them respectively; the connecting shaft is set on the bevel gear plate and welded together with it, the first bearing and the second bearing are arranged on the connecting shaft, and the combination formed by the connecting shaft and the bevel gear The body is supported in the first bearing hole and the second bearing hole provided on the support frame through the first bearing and the second bearing, and is axially fixed through the end cover. One joint surface; the first journals set on the three bevel gear shafts are respectively placed in the three radial circular holes set on the support frame, and the second journals set on the three bevel gear shafts are respectively placed in the three radial holes. In the inner hole provided on the first baffle, the three baffles are fixedly connected with the end faces of the radial round holes provided on the chuck body. 7. The roll repair welding machine according to claim 6, characterized in that: the six-jaw chuck is placed on the large disk arranged on the second joint surface of the chuck body provided on it and the connecting shaft of the bedside box together and achieve a solid connection with the bedside box. 8. According to the roll repair surfacing welding machine according to claim 1, it is characterized in that: the tailstock top device is mainly composed of a top, a sliding shaft, a blind cover, a base seat, a two-speed motor, a stop claw, a rack , dustproof cylinder, intermediate flange, flange cover, hand wheel, two first angular contact ball bearings, transmission shaft, first worm gear, first worm, two second angular contact ball bearings, gears, second worm gear , threaded push rod, retaining ring, first thrust bearing, second thrust bearing, sleeve, countersunk key, flange, two double-row self-aligning roller bearings, transparent cover, two third angular contact ball bearings, The second worm, hook head sliding key and cylindrical pin are composed; the sliding shaft is an optical axis, one end is provided with a counterbore, the other end is provided with a Morse taper hole, and the middle outer circular surface is provided with a keyway; the described The foundation seat is a box-shaped structure, and the first hole system and the second hole system in a staggered space are arranged at the lower rear position, and the first rectangular guide rail and the second rectangular guide rail are arranged on the bottom side. The upper part is provided with a third hole system and a fourth hole system in a staggered space, and an ear seat is provided on the rear facade of the base; the second worm wheel has an internal thread in its inner hole, and a The outer end surface and the inner spigot are provided with a journal at the other end; the threaded push rod is provided with an externally threaded shaft section at one end, a keyway is provided on the externally threaded shaft section, and an annular rib and a shaft are provided at the other end. neck; the sleeve is a hollow cylinder structure, which is provided with a counterbore, an inner hole, and an end shaft section; the stop claw is provided with a stop tooth, and the stop claw is placed on the ear of the base through a cylindrical pin On the seat; the first worm is supported in the first hole system set on the base base through two first angular contact ball bearings, and is connected with the two-speed motor at the extended shaft section of the first worm, and the two-speed motor is fixedly connected to the base base Above; the transmission shaft is supported in the second hole set on the foundation base through two second angular contact ball bearings, and a first worm wheel and a gear are arranged in the middle of the transmission shaft, both of which are fixedly connected with the transmission shaft; the first worm and The first worm gear forms a worm gear pair, and the gear and rack form a rack and pinion pair; the first thrust bearing is placed on the journal of the threaded push rod and placed in the counterbore provided by the slide shaft, and the retaining ring acts on the threaded push rod. The rod is set on the annular rib, and is fixedly connected with the sliding shaft to form an axial fixed connection between the threaded push rod and the sliding shaft; the sliding shaft is placed in the inner hole of the sleeve, and the countersunk feather key is placed in the sleeve. In the counterbore, and form a sliding pair with the keyway set on the sliding shaft; the second worm gear is placed on the external threaded shaft section of the threaded push rod through the internal thread set on it to form a spiral pair, and the journal set by the second worm wheel is placed In the inner hole provided by the flange cover, the inner spigots provided by the second thrust bearing and the second worm gear are placed on the end face shaft section provided by the sleeve, and the outer end surface of the inner spigot is placed on the end face of the second thrust bearing; The sleeve is supported in the fourth hole system of the foundation base through two double-row self-aligning roller bearings; the flange cover and the flange plate are respectively fixed on the two outer ends of the fourth hole system of the foundation base; the middle flange There is a keyway on the top, and a hook slide key is placed on it. The working surface of the hook slide key is placed in the keyway set by the threaded push rod to form a sliding pair. The middle flange is fixedly connected to the flange cover; the dust-proof cylinder is fixed Connected to the intermediate flange; tip set It is placed in the Morse taper hole set on the sliding shaft; the second worm is placed in the third hole set on the base through two third angular contact ball bearings, and is fixedly connected to the third hole of the base through a blind cover and a transparent cover The two outer end faces of the system realize the axial fixation of the second worm; the second worm and the second worm wheel form a worm gear pair; the middle flange is provided with a keyway, and the hook head slide key is placed in the keyway, and the work of the hook head slide key face seated in the keyway provided by the threaded push rod. 9. According to the roll repair surfacing machine according to claim 8, it is characterized in that: the rack provided on the tailstock top device is placed in the first rectangular groove of the base, and is firmly connected with the base, and the tailstock top The first rectangular guide rail and the second rectangular guide rail of the base set on the device are placed in the two first rectangular guide rails set on the base base, and the stop teeth of the stop pawl set on the top device of the tailstock are engaged with the rack .