CN217551381U

CN217551381U - Cutting all-in-one of H type, box or cross girder steel

Info

Publication number: CN217551381U
Application number: CN202220412722.8U
Authority: CN
Inventors: 杭峰
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-02-28
Filing date: 2022-02-28
Publication date: 2022-10-11
Anticipated expiration: 2032-02-28

Abstract

The utility model discloses a cutting all-in-one of H type, box or cross girder steel. The H-shaped, box-shaped or cross-shaped steel beam cutting all-in-one machine comprises an X-direction guide rail, at least one adjustable base is arranged at the bottom of the X-direction guide rail, a cutting trolley is arranged at the top of the X-direction guide rail and comprises an X-direction base, an X-direction driving device and a Y-direction driving device are arranged on the X-direction base, the X-direction driving device drives the X-direction base to reciprocate on the X-direction guide rail, the Y-direction driving device drives the Y-direction guide rail to reciprocate on the Y-direction, a Z-direction base is arranged at one end of the Y-direction guide rail, a Z-direction driving device is arranged on the Z-direction base, the Z-direction driving device drives the Z-direction guide rail to reciprocate on the Z-direction, an adjustable gun is arranged on the Z-direction guide rail, and a gun head base is installed on the adjustable gun head base. The utility model provides a current cutting machine can not the multidimension degree cutting, the low problem of work efficiency.

Description

Cutting all-in-one of H type, box or cross girder steel

Technical Field

The utility model relates to a flame cutting device especially relates to a cutting all-in-one of H type, box or cross girder steel.

Background

Cutting, assembling and welding are important processes in steel structure production, wherein the cutting quality and the assembling precision can influence the subsequent welding quality and operability, and the steel structure production processes are steel plate blanking, groove machining, assembling, welding and the like under normal conditions. The existing cutting machine is single in function, can only perform cutting operation in one direction, and when the direction is changed for cutting, a workpiece needs to be turned over, the cutting machine needs to be installed again, so that the operation is complex, and the working efficiency is low.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a can multidimension degree carry out the cutting operation, the cutting all-in-one of H type, box or cross girder steel that work efficiency is high.

In order to achieve the above object, the utility model discloses the technical scheme that the cutting all-in-one of H type, box or cross girder steel adopted is:

the utility model provides a cutting all-in-one of H type, box or cross girder steel, including X to the guide rail, X is provided with an adjustable base to the bottom of guide rail at least, X is provided with the cutting carriage to the top of guide rail, the cutting carriage includes X to the base, X is provided with X to drive arrangement and Y to drive arrangement on to the base, X orders about X to the base to reciprocate on X is to the guide rail, Y orders about Y to the drive arrangement and reciprocates in Y direction to the guide rail, one end of Y is provided with Z to the base, Z is provided with Z to drive arrangement on to the base, Z is to drive arrangement orders about Z to the guide rail and reciprocates in Z direction, Z is provided with adjustable rifle on to the guide rail, the rifle head headstock is installed to adjustable rifle head seat. The X-direction guide rail is erected at a proper position of the workpiece through the adjustable base, after the gun head finishes the cutting work in one direction, the direction of the gun head can be adjusted only through the adjustable gun head seat, the cutting work in other directions can be carried out, the workpiece does not need to be turned over, the cutting machine is installed again, the operation is convenient and fast, and the working efficiency is improved.

Preferentially, the adjustable base comprises a supporting plate for bearing an X-direction guide rail, a first pin shaft is arranged on the supporting plate, the first pin shaft protrudes out of one end of the supporting plate and extends to the bottom of the X-direction guide rail, an X-direction sliding groove matched with the first pin shaft is formed in the bottom of the X-direction guide rail, at least one first arc groove is formed in the supporting plate by taking the first pin shaft as the center of a circle, a first locking bolt is arranged in the arc groove, a T-shaped sliding block matched with the first locking bolt is arranged in the X-direction sliding groove, a clamping block is arranged at the bottom of the supporting plate, and a second locking bolt is arranged on the outer side wall of the clamping block. The X-direction guide rail rotates to a required angle by taking the first pin shaft as a circle center, is fixed on the supporting plate through the first locking bolt, and can finish the inclined plane cutting of the workpiece under the respective actions of the X-direction driving device, the Y-direction driving device and the Z-direction driving device.

Preferably, the X-direction driving device comprises an X-direction motor located at the top of the X-direction base, an output shaft of the X-direction motor is connected with an X-direction gear, the X-direction gear is engaged with an X-direction rack, the X-direction rack is fixedly connected to the top of the X-direction guide rail, and an X-direction guide wheel matched with the X-direction guide rail is arranged at the bottom of the X-direction base. And starting the X-direction motor, matching the X-direction gear with the X-direction rack, and enabling the X-direction base to do reciprocating linear motion on the X-direction guide rail under the action of the X-direction guide wheel.

Preferably, X has seted up T type groove to the base bottom, T type inslot slip has and is used for installing X to the slide of motor, one side of slide is provided with eccentric clutch, eccentric clutch installs in X to the top of base, eccentric clutch is used for controlling X to the separation and reunion of gear and X to the rack, the hole of dodging that X slided to the gear is seted up to the bottom in T type groove, a plurality of blind hole has been seted up to the opposite side of slide, be provided with reset spring in the blind hole, reset spring's the diapire of one end conflict blind hole, the other end conflicts X to the inside wall of base, X has the guide pin that penetrates the spring to the inside wall rigid coupling of base. Rotating the eccentric clutch, wherein the eccentric wheel of the eccentric clutch extrudes the sliding plate, the sliding plate extrudes the return spring and then slides outwards in the T-shaped groove, the X-direction gear leaves the X-direction rack, and the X-direction base cannot walk on the X-direction guide rail at the moment; and the eccentric clutch is rotated reversely, the return spring pushes the sliding plate, the X-direction gear is re-meshed with the X-direction rack, and the X-direction base can walk on the X-direction guide rail after the X-direction motor is started.

Preferably, one end of the sliding plate matched with the eccentric clutch is provided with a wear-resisting block. The wear-resistant block is used as a wearing part to avoid the damage of the sliding plate.

Preferentially, Y to drive arrangement including with the Y of X to the base pin joint to the runner, Y is connected with first worm to the runner, one side of first worm be provided with the first pivot of X to the base pin joint, the first worm wheel with first worm meshing is cup jointed on the upper portion of first pivot, the bottom rigid coupling of first pivot has Y to the gear, Y to the gear meshing has Y to the rack, Y to the rack rigid coupling in the top of Y to the guide rail, X is to the base and is seted up the Y that Y passed to the guide rail to the through-hole, and the both sides of Y to the through-hole are provided with Y to the guide wheel with Y to guide rail complex, Y to guide wheel and X to the base pin joint. The first worm is matched with the first worm wheel to drive the Y-direction gear to rotate, and the Y-direction gear is matched with the Y-direction rack to drive the Y-direction guide rail to do linear motion in the Y direction under the action of the Y-direction guide wheel, so that the gun head is driven to do linear motion in the Y direction.

Preferentially, Y passes through angle adjustment mechanism to connect Z to the base to the guide rail, angle adjustment mechanism includes the angle adjustment mount pad to the base rigid coupling with Z, the angle adjustment mount pad has the adapter through the pin joint of second round pin axle, the adapter is installed in the tip of Y to the guide rail, the adapter pin joint has the second worm, one side of second worm is provided with the second pivot, the one end of second pivot has cup jointed the second worm wheel with second worm meshing, the other end has cup jointed first angle adjustment gear, first angle adjustment gear meshing has second angle adjustment gear, second angle adjustment gear rigid coupling is in the angle adjustment mount pad, the second circular arc groove has been seted up as the centre of a circle to the angle adjustment mount pad with the second round pin axle, be provided with the third locking bolt that is used for fixed adapter in the second circular arc groove. After the transmission of the second worm and the second worm wheel, the first angle adjusting gear is driven to rotate, the second angle adjusting gear drives the Z-direction base to rotate under the action of the first angle adjusting gear, so that the Z-direction guide rail is driven to rotate in a YZ quadrant, after the Z-direction guide rail reaches a set angle, the Z-direction guide rail is locked through the third locking bolt, the Z-direction motor is started, and the gun head can perform oblique cutting on the vertical face of the workpiece.

Preferably, the angle adjustment mounting base is provided with a third pin shaft, one end of the third pin shaft is sleeved with the angle adjustment mounting base, the other end of the third pin shaft is sleeved with the Z-direction base, a third arc-shaped groove is formed in the angle adjustment mounting base by taking the third pin shaft as a circle center, and a fourth locking nut for fixing the angle adjustment mounting base is arranged in the third arc-shaped groove. And the Z-direction base rotates around the third pin shaft so as to drive the Z-direction guide rail to rotate in an XZ quadrant, and after the Z-direction guide rail reaches a set angle, the Z-direction guide rail is locked by a fourth locking bolt, a Z-direction motor is started, and the gun head can perform oblique cutting on the vertical surface of the workpiece.

Preferably, one end of the Y-direction guide rail is provided with a balancing weight, and the balancing weight is positioned on the opposite side of the Z-direction base.

Preferably, the Z-direction driving device includes a Z-direction motor fixedly connected to the Z-direction base, an output shaft of the Z-direction motor is connected to a third worm, a third rotating shaft pivotally connected to the Z-direction base is disposed on one side of the third worm, a third worm wheel meshed with the third worm is disposed at one end of the third rotating shaft, a Z-direction gear is fixedly connected to the other end of the third rotating shaft, a Z-direction rack is meshed to the Z-direction gear, the Z-direction rack is fixedly connected to the Z-direction base, and a Z-direction guide wheel matched with the Z-direction guide rail is pivotally connected to the Z-direction base. The third worm is matched with the third worm wheel to drive the Z-direction gear to rotate, and the Z-direction gear and the Z-direction rack are matched to drive the Z-direction guide rail to do linear motion in the Z direction under the action of the Z-direction guide wheel, so that the gun head is driven to do linear motion in the Z direction.

Compared with the prior art, the utility model, have following advantage:

1. the X-direction guide rail is erected at a proper position of the workpiece through the adjustable base, when the gun head finishes cutting work in one direction, the cutting work in other directions can be carried out only by adjusting the direction of the gun head through the adjustable gun head base, the workpiece does not need to be turned over, the cutting machine is installed again, the operation is convenient and fast, and the working efficiency is improved;

2. the X-direction guide rail rotates around the first pin shaft, is locked through the first locking bolt, and starts the X-direction motor to realize oblique cutting of the workpiece in the XY quadrant;

3. after the transmission of the second worm and the second worm wheel, the first angle adjusting gear is driven to rotate, the second angle adjusting gear drives the Z-direction base to rotate under the action of the first angle adjusting gear, so that the Z-direction guide rail is driven to rotate in a YZ quadrant, and after a set angle is reached, the Z-direction motor is locked through the third locking bolt and started, so that the workpiece can be obliquely cut in the YZ quadrant;

4. the Z-direction base rotates around the third pin shaft, so that the Z-direction guide rail is driven to rotate in the XZ quadrant, after the Z-direction base reaches a set angle, the Z-direction base is locked through the fourth locking bolt, the Z-direction motor is started, and oblique cutting of the workpiece in the XZ quadrant can be achieved.

Drawings

FIG. 1 is a schematic view of the present invention for cutting the vertical surface of an H-shaped steel beam;

FIG. 2 is a schematic view of the present invention in cutting the plane of the H-shaped steel beam;

FIG. 3 is a top view of the adjustable base;

FIG. 4 isbase:Sub>A cross-sectional view A-A of FIG. 3;

FIG. 5 is a cross-sectional view B-B of FIG. 3;

FIG. 6 is a schematic view of the structure of the X-direction driving device;

FIG. 7 is a schematic structural view of a Y-direction driving device;

FIG. 8 is a schematic structural view of an angle adjustment mechanism;

FIG. 9 is a schematic view of the connection of the angle adjustment mount to the Z-direction base;

fig. 10 is a schematic view of the structure of the Z-direction driving device.

Wherein, 1-X guide rail, 11-X sliding groove, 2-adjustable base, 21-supporting plate, 211-first arc groove, 22-first pin shaft, 23-first locking bolt, 24-T sliding block, 25-clamping block, 26-second locking bolt, 3-cutting trolley, 31-X base, 311-T groove, 312-avoiding hole, 313-X guide wheel, 314-eccentric clutch, 315-guide pin, 316-Y through hole, 317-Y guide wheel, 32-X drive device, 321-sliding plate, 322-X motor, 323-X gear, 324-X rack, 325-wear-resistant block, 326-blind hole, 327-reset spring, 33-Y drive device, 331-Y rotary wheel, 332-a first worm, 333-a first rotating shaft, 334-a first worm gear, 335-a Y-directional gear, 336-a Y-directional rack, 337-a Y-directional guide rail, 338-a balancing weight, 4-an angle adjusting mechanism, 41-an angle adjusting mounting seat, 411-a second angle adjusting gear, 412-a second arc groove, 413-a third locking bolt, 414-a third pin shaft, 415-a third arc groove, 416-a fourth locking nut, 42-a second pin shaft, 43-an adapter, 431-a second worm, 432-a second rotating shaft, 433-a second worm gear, 434-a first angle adjusting gear, 5-Z-directional base, 51-Z-directional guide rail, 52-an adjustable gun head seat, 53-gun head, 54-Z-directional driving device, 541-Z motor, 542-third worm, 55-third rotating shaft, 551-third worm wheel, 552-Z gear, 56-Z rack and 57-Z guide wheel.

Detailed Description

The present invention will be further explained with reference to the attached drawings and detailed description, which should be understood that these embodiments are only for illustrating the present invention and are not intended to limit the scope of the present invention, and after reading the present invention, the modifications of the various equivalent forms of the present invention by those skilled in the art will fall within the scope defined by the appended claims of the present application.

As shown in figures 1 to 10, the H-shaped, box-shaped or cross-shaped steel beam cutting all-in-one machine comprises an X-direction guide rail 1,X, two adjustable bases 2 arranged towards the bottom of the guide rail, each adjustable base comprises a supporting plate 21 used for bearing the X-direction guide rail, a first pin shaft 22 is arranged at the center of each supporting plate, one end, protruding out of each supporting plate, of each first pin shaft extends towards the bottom of the X-direction guide rail, an X-direction sliding groove 11 matched with the first pin shaft is formed in the bottom of each X-direction guide rail, two first arc grooves 211 are formed in the supporting plates by taking the first pin shafts as circle centers and are symmetrical relative to the first pin shafts, first locking bolts 23 are arranged in the arc grooves, T-shaped sliding blocks 24 matched with the first locking bolts are arranged in the X-direction sliding grooves, the X-direction guide rails can rotate +/-45 degrees around the first pin shafts, two symmetrical clamping blocks 25 are detachably connected to the bottoms of the supporting plates, the outer side wall of the clamping block is in threaded connection with three second locking bolts 26, the top of an X-direction guide rail is provided with a cutting trolley 3, the cutting trolley comprises an X-direction base 31, an X-direction driving device 32 and a Y-direction driving device 33 are arranged on the X-direction base, the X-direction driving device comprises a sliding plate 321 in sliding connection with the X-direction base, a T-shaped groove 311 is formed in the X-direction base, the sliding plate slides along the Y direction in the T-shaped groove, the top of the sliding plate is provided with an X-direction motor 322, the output shaft of the X-direction motor is connected with an X-direction gear 323, the bottom of the T-shaped groove is provided with an avoiding hole 312 in which the X-direction gear slides, an X-direction gear meshed X-direction rack 324 and an X-direction rack are fixedly connected to the top of the X-direction guide rail, the bottom of the X-direction base is pivoted and clamps an X-direction guide wheel 313 of the X-direction guide rail, the front side of the sliding plate is provided with an eccentric clutch 314, the eccentric clutch is arranged on the top of the X-direction base, the front side of the sliding plate is provided with a wear-resistant block 325, the eccentric clutch and interacts with the X-direction gear to control the X-direction rack to be clutched with the X-direction rack, the wear-resistant block is used as a wearing part to avoid the slide plate from being damaged, three blind holes 326 are equidistantly arranged on the rear side of the slide plate, a return spring 327 is placed in each blind hole, the front end of the return spring is abutted against the bottom wall of the blind hole, the rear end of the return spring is abutted against the inner side wall of the X-direction base, a guide pin 315 penetrating through the spring is fixedly connected to the inner side wall of the X-direction base, a Y-direction driving device comprises a Y-direction rotating wheel 331 pivoted with the X-direction base, a Y-direction rotating wheel connected with a first worm 332, a first rotating shaft 333 pivoted with the X-direction base is arranged on the front side of the first worm, a first worm wheel 334 meshed with the first worm is sleeved on the upper part of the first rotating shaft, a Y-direction gear 335 is fixedly connected to the bottom of the first rotating shaft, a Y-direction gear meshed with a Y-direction rack 336, the Y-direction rack is fixedly connected to the top of a Y-direction guide rail 337, a Y-direction through hole 316 is arranged on the X-direction base, Y-direction through hole is arranged on two sides of the Y-direction through hole and matched with the Y-direction guide rail 317, the Y-direction guide wheel is pivoted with the X-direction base, the front end of the Y-direction guide rail is connected with a Z-direction base 5,Y through an angle adjusting mechanism 4, a balancing weight 338 is arranged at the rear end of the guide rail, the angle adjusting mechanism comprises an angle adjusting installation seat 41 fixedly connected with the Z-direction base, the angle adjusting installation seat is pivoted with a joint 43 through a second pin shaft 42, the joint is installed at the end part of the Y-direction guide rail, the joint is pivoted with a second worm 431, the front side of the second worm is provided with a second rotating shaft 432 pivoted with the joint, the left end of the second rotating shaft is sleeved with a second worm wheel 433 meshed with the second worm, the right end of the second rotating shaft is sleeved with a first angle adjusting gear 434, the first angle adjusting gear is meshed with a second angle adjusting gear 411, the second angle adjusting gear is fixedly connected with the angle adjusting installation seat, the angle adjusting installation seat is provided with a second arc groove 412 by taking the second pin shaft as the circle center, and a third locking bolt 413 for fixing the joint is arranged in the second arc groove, a third pin shaft 414 is arranged at the center of the angle adjusting mounting seat, one end of the third pin shaft is sleeved with the angle adjusting mounting seat, the other end of the third pin shaft is sleeved with the Z-direction base, a third arc-shaped groove 415 is formed in the angle adjusting mounting seat by taking the third pin shaft as the circle center, a fourth locking nut 416 for fixing the angle adjusting mounting seat is arranged in the third arc-shaped groove, a Z-direction guide rail 51 is arranged on the front side end surface of the Z-direction base, an adjustable gun head seat 52 is arranged on the front side surface of the Z-direction guide rail, a gun head 53 is arranged on the adjustable gun head seat, a Z-direction driving device 54 is arranged on the Z-direction base, the Z-direction driving device comprises a Z-direction motor 541 fixedly connected with the Z-direction base, an output shaft of the Z-direction motor is connected with a third worm 542, a third rotating shaft 55 pivotally connected with the Z-direction base is arranged on the left side of the third worm seat, a third worm wheel 551 meshed with the rear end of the third rotating shaft, the front end of the third rotating shaft is fixedly connected with a Z-direction gear 552, a Z-direction rack 56 meshed with the Z-direction gear 57 fixedly connected with the Z-direction base, and the Z-direction gear is pivotally connected with the Z-direction base.

The utility model discloses a concrete working process and principle: the X-direction guide rail is erected at a proper position of the H-shaped steel beam through the adjustable base, the Y-direction rotating wheel is rotated, the first worm and the first worm wheel are used for transmission, the Y-direction gear is meshed with the Y-direction rack for transmission, the Y-direction guide rail extends out of the Y-direction through hole for a proper distance, the gun head is aligned to the right side vertical face of the H-shaped steel beam, the Z-direction motor is started, after the gun head finishes the operation of cutting the right side vertical face of the H-shaped steel beam, the gun head is adjusted to be aligned to the plane of the H-shaped steel beam, the X-direction motor is started, after the operation of cutting the plane of the H-shaped steel beam by the gun head is finished, the gun head is adjusted to be aligned to the left side vertical face of the H-shaped steel beam, the Z-direction motor is started, and the gun head carries out the operation of cutting the left side vertical face of the H-shaped steel beam, and therefore cutting of the 45-degree face of the end portion of the H-shaped steel beam is finished. The utility model discloses can slant, erect the work piece perpendicularly, the automatic cutout of domatic or bevel connection is accomplished to the work piece to the multidimension degree, convenient operation, the machining precision is high, and work efficiency is high.

Claims

1. The utility model provides a cutting all-in-one of H type, box or cross girder steel which characterized in that: including X to the guide rail, X is provided with an adjustable base to the bottom of guide rail at least, X is provided with the cutting dolly to the top of guide rail, the cutting dolly includes X to the base, X is provided with X on to the base to drive arrangement and Y to drive arrangement, X orders about X to the base reciprocating motion on X to the guide rail, Y orders about Y to drive arrangement Y to the guide rail reciprocating motion on Y direction, Y is provided with Z to the base to the one end of guide rail, Z is provided with Z to drive arrangement on to the base, Z orders about Z to the guide rail reciprocating motion on Z direction to drive arrangement, Z is provided with adjustable rifle headstock on to the guide rail, the rifle head is installed to adjustable rifle headstock.

2. The machine of claim 1 for cutting H-beams, box-beams or cross-beams, wherein: the adjustable base comprises a supporting plate for bearing an X-direction guide rail, a first pin shaft is arranged on the supporting plate, the first pin shaft protrudes out of one end of the supporting plate and extends to the bottom of the X-direction guide rail, an X-direction sliding groove matched with the first pin shaft is formed in the bottom of the X-direction guide rail, at least one first arc groove is formed in the supporting plate by taking the first pin shaft as a circle center, a first locking bolt is arranged in the arc groove, a T-shaped sliding block matched with the first locking bolt is arranged in the X-direction sliding groove, a clamping block is arranged at the bottom of the supporting plate, and a second locking bolt is arranged on the outer side wall of the clamping block.

3. The machine of claim 1 for cutting H-beams, box-beams or cross-beams, wherein: the X-direction driving device comprises an X-direction motor located at the top of the X-direction base, an output shaft of the X-direction motor is connected with an X-direction gear, an X-direction rack is meshed with the X-direction gear, the X-direction rack is fixedly connected to the top of the X-direction guide rail, and an X-direction guide wheel matched with the X-direction guide rail is arranged at the bottom of the X-direction base.

4. An integrated H-beam, box-beam or cross-beam cutting machine as claimed in claim 3, wherein: x has seted up T type groove to the base bottom, T type inslot sliding has the slide that is used for installing X to the motor, one side of slide is provided with eccentric clutch, eccentric clutch installs at X to the top of base, eccentric clutch is used for controlling X to the separation and reunion of gear and X to the rack, X has been seted up to the bottom in T type groove and has been dodged the hole to what the gear slided, a plurality of blind hole has been seted up to the opposite side of slide, be provided with reset spring in the blind hole, reset spring's one end conflicts the diapire of blind hole, the other end conflicts X to the inside wall of base, X has the guide pin that penetrates the spring to the inside wall rigid coupling of base.

5. The machine according to claim 4, wherein the machine comprises: and one end of the sliding plate matched with the eccentric clutch is provided with a wear-resisting block.

6. The machine of claim 1 for cutting H-beams, box-beams or cross-beams, wherein: y to drive arrangement includes the Y to the runner with X to the base pin joint, and Y is connected with first worm to the runner, and one side of first worm is provided with the first pivot with X to the base pin joint, and the first worm wheel with first worm meshing has been cup jointed on the upper portion of first pivot, and the bottom rigid coupling of first pivot has Y to the gear, and Y has Y to the gear meshing to the rack, and Y is to the rack rigid coupling in the top of Y to the guide rail, Y to the base seted up the Y to the guide rail that the Y passed to the guide rail, and the both sides of Y to the through-hole are provided with the Y to the guide wheel with Y to guide rail complex, Y to guide wheel and X to the base pin joint.

7. The machine of claim 6, wherein the machine comprises: y passes through angle adjustment mechanism to the guide rail and connects Z to the base, angle adjustment mechanism include with the angle adjustment mount pad of Z to the base rigid coupling, the angle adjustment mount pad has the adapter through the pin joint of second round pin axle, the adapter is installed in the tip of Y to the guide rail, the adapter pin joint has the second worm, one side of second worm is provided with the second pivot, the second worm wheel with second worm meshing has been cup jointed to the one end of second pivot, first angle adjustment gear has been cup jointed to the other end, first angle adjustment gear meshing has second angle adjustment gear, second angle adjustment gear rigid coupling is in the angle adjustment mount pad, the second circular arc groove has been seted up as the centre of a circle to the angle adjustment mount pad with the second round pin axle, be provided with the third locking bolt that is used for fixed adapter in the second circular arc groove.

8. The machine of claim 7 for cutting H-beams, box-beams or cross-beams, wherein: the angle adjusting mounting seat is provided with a third pin shaft, one end of the third pin shaft is sleeved with the angle adjusting mounting seat, the other end of the third pin shaft is sleeved with the Z-direction base, a third arc-shaped groove is formed in the angle adjusting mounting seat by taking the third pin shaft as a circle center, and a fourth locking nut used for fixing the angle adjusting mounting seat is arranged in the third arc-shaped groove.

9. The machine of claim 7 for cutting H-beams, box-beams or cross-beams, wherein: one end of the Y-direction guide rail is provided with a balancing weight which is positioned at the opposite side of the Z-direction base.

10. The machine of claim 1 for cutting H-beams, box-beams or cross-beams, wherein: the Z-direction driving device comprises a Z-direction motor fixedly connected with the Z-direction base, an output shaft of the Z-direction motor is connected with a third worm, one side of the third worm is provided with a third rotating shaft pivoted with the Z-direction base, one end of the third rotating shaft is provided with a third worm wheel meshed with the third worm, the other end of the third rotating shaft is fixedly connected with a Z-direction gear, the Z-direction gear is meshed with a Z-direction rack fixedly connected with the Z-direction base, and the Z-direction base is pivoted with a Z-direction guide wheel matched with the Z-direction guide rail.