CN212371446U

CN212371446U - Laser cutting machine change table

Info

Publication number: CN212371446U
Application number: CN202020375895.8U
Authority: CN
Inventors: 肖俊; 张标
Original assignee: Zhejiang Taihao Technology Co ltd
Current assignee: Zhejiang Taihao Technology Co ltd
Priority date: 2020-03-23
Filing date: 2020-03-23
Publication date: 2021-01-19
Anticipated expiration: 2030-03-23

Abstract

The utility model provides a laser cutting machine exchange workbench, which comprises a main lathe bed, an exchange workbench and a traction device; the exchange workbench comprises a rack, a cutting table and a lifting device, and the traction device comprises a driving assembly a, a chain wheel transmission assembly a and a chain wheel traction assembly; elevating gear includes elevating system and synchronous subassembly, the utility model discloses both sides correspondence sets up two sets of sprocket traction assembly on main lathe bed, sets up the cutting bed that sets up about two sets of simultaneously on the change table, and sets up two sets of elevating system through the linkage of synchronous subassembly along cutting bed direction of traction, elevating system sets up in the cutting bed both sides and through the elevating system of sprocket drive subassembly b linkage including the symmetry, arbitrary two sets of cutting beds of elevating system work drive cooperate with sprocket traction assembly in turn, make laser cutting machine's structure compacter when improving laser cutting efficiency.

Description

Laser cutting machine change table

Technical Field

The utility model relates to a laser cutting equipment specifically is a laser cutting machine change table.

Background

The exchange workbench is an auxiliary mechanism of the laser cutting machine, so that the material changing waiting time is reduced, the cutting efficiency is improved, the material on the cutting table of the main lathe body is cut, the material is loaded on the cutting table of the auxiliary lathe body, and the two cutting tables are exchanged after the cutting is finished.

The utility model discloses a chinese patent application number is CN 201520885567.1's utility model discloses a laser cutting machine change table, including waiting for district's workstation, workspace workstation, actuating mechanism and drive mechanism, workspace workstation top is equipped with laser cutting machine, but have the difference in height between waiting for district's workstation and the workspace workstation, but waiting for district's workstation and workspace workstation have horizontal migration's removal face, drive mechanism one end is connected with waiting for the district's workstation, and the other end is connected with the workspace workstation, actuating mechanism drive mechanism both way movement. Waiting area workstation, workspace workstation only do horizontal migration and need not to exchange from top to bottom to mechanical card problem of dying when avoiding exchanging from top to bottom completely, consequently, the utility model discloses simple structure, fault rate are low, exchange speed is fast, efficient, convenient operation.

However, this utility model well latency zone workstation, workspace workstation all can only be horizontal migration, and drive mechanism then needs to correspond the setting with the workstation, must increase the volume and the cost of laser cutting machine.

SUMMERY OF THE UTILITY MODEL

In order to the problem, the utility model provides a laser cutting machine change table, it corresponds in main lathe bed both sides and sets up two sets of sprocket traction assembly, set up the cutting bed that sets up about two sets of simultaneously on change table, and set up two sets of elevating system through the linkage of synchronous subassembly along cutting bed direction of traction, elevating system sets up the lifting unit in cutting bed both sides and through sprocket drive assembly b linkage including the symmetry, arbitrary two sets of cutting beds of lifting unit work drive cooperate with sprocket traction assembly in turn, make laser cutting machine's structure compacter when improving laser cutting efficiency.

In order to achieve the above object, the utility model provides a following technical scheme:

an exchange workbench of a laser cutting machine comprises a main lathe body, an exchange workbench arranged on one side of the main lathe body in a transition mode and a traction device arranged between the exchange workbench and the main lathe body; the exchange workbench comprises a rack, two groups of cutting tables arranged up and down and a lifting device for driving the two groups of cutting tables to move up and down, and the lifting device is arranged on the rack and is positioned below the two groups of cutting tables;

the traction device comprises a driving component a fixedly mounted on the main lathe bed, two groups of chain wheel transmission components a symmetrically arranged on two sides of the driving component a and two groups of chain wheel traction components arranged on the main lathe bed and respectively in power connection with the two groups of chain wheel transmission components a, each chain wheel traction component comprises a chain wheel respectively arranged at two ends of the main lathe bed in the length direction and a chain sleeved on the chain wheel, and a traction wheel capable of driving any cutting table to move to the main lathe bed is arranged on the inner side of the chain;

the lifting device comprises two groups of lifting mechanisms arranged along the horizontal traction direction of the cutting table and two groups of synchronous transmission synchronous assemblies connected with the lifting mechanisms, the lifting mechanisms comprise lifting assemblies arranged on two sides of the cutting table in a bilateral symmetry mode and chain wheel transmission assemblies b connected with the two groups of lifting assemblies to synchronously act, the lifting assemblies comprise driving assemblies b and two groups of horizontal intervals, the driving assemblies b and the two groups of horizontal intervals are installed on the rack and respectively correspond to driven transmission members located above the chain wheel transmission assemblies b, and the driving assemblies b and the driving assemblies are connected with the chain wheel transmission assemblies b and the driven transmission members in a transmission mode and lift chains, and the driving assemblies b and the driving assemblies are far away from the free end of the lifting chains arranged.

As an improvement, the end parts of the two groups of cutting tables facing the main lathe body are respectively provided with a limiting block a, and the limiting block a is provided with a guide groove a in sliding fit with the traction wheel; two sets of another tip that the cutting bed was installed stopper a relatively is provided with spacing subassembly.

As an improvement, the limiting assembly comprises a limiting plate fixed at one end, far away from the main bed body, of the rack and a limiting block b arranged on the cutting table, and a guide groove b in sliding fit with the limiting plate is formed in the limiting block b.

As an improvement, the exchange workbench further comprises a movable frame for supporting two groups of cutting tables and a plurality of groups of guide assemblies; the two groups of cutting tables are arranged on the moving frame in a left-right sliding mode; the guide assemblies are respectively arranged in the middle of the two driven transmission members of the same lifting assembly.

As an improvement, the guide assembly comprises a slide rail vertically mounted on the rack and a slide block fixed on the movable frame and in sliding fit with the slide rail.

As an improvement, the sprocket transmission component b comprises two sprocket transmission parts, and the sprocket transmission parts respectively comprise transmission shafts and sprocket groups which are arranged at two ends of the transmission shafts and respectively meshed with the transmission chains and the lifting chains for transmission.

As an improvement, the synchronous assembly comprises a synchronous chain which is in transmission connection with the adjacent chain wheel set in the two lifting assemblies positioned on the same side of the rack.

As an improvement, the driving assemblies b are all oil cylinders and are obliquely hinged on the rack, the power output ends of the driving assemblies b are fixedly connected with the lifting chains, and the driving assemblies b are all arranged in parallel and respectively drive the transmission chains, the lifting chains and the synchronous chains to rotate towards the same direction.

As a modification, the exchange workbench is also provided with a hydraulic station which is connected with each driving assembly b through a distribution valve.

As an improvement, the main lathe body further comprises a blanking trolley and a dust removal system, and the blanking trolleys are arranged at the bottom of the main lathe body; the dust removal system comprises a plurality of air ports which are arrayed along the length direction of the main lathe body and are arranged on the inner walls of the two sides of the main lathe body, air suction valve assemblies which are arranged corresponding to the air ports and are fixedly installed on the main lathe body, and dust channels which are symmetrically arranged on the two sides of the main lathe body and are communicated with the air ports and external dust collection equipment.

The beneficial effects of the utility model reside in that:

(1) the utility model discloses both sides correspond on main lathe bed and set up two sets of sprocket traction assemblies, set up two sets of cutting beds that set up from top to bottom simultaneously on the change table, and set up two sets of elevating system that link through the synchronizing assembly along cutting bed direction of traction, elevating system includes the symmetry sets up in cutting bed both sides and through the elevating system of sprocket drive subassembly b linkage, arbitrary elevating system can drive two sets of cutting beds and coordinate with sprocket traction assembly in turn, make laser cutting machine's structure compacter when improving laser cutting efficiency;

(2) the utility model discloses the height of well sprocket traction assembly keeps inconvenient, and the cutting bed that sets up from top to bottom through the elevating gear lifting makes the traction wheel block in corresponding guide way a, has guaranteed that the cutting bed that enters main lathe bed is in unified height all the time, need not to adjust the cutting head of laser cutting machine, reduces the dynamic impact to the cutting head, reduces the equipment loss;

(3) in the utility model, the lifting component provides power through the oil cylinder, the cutting table moves up and down in a power mode of chain wheel and chain transmission and a mode of matching chain wheel and chain transmission, the transmission efficiency of the chain wheel and chain is high, the structure is more compact, the volume of the exchange workbench is reduced while the volume of the lifting device is reduced;

(4) the utility model discloses well two sets of cutting beds reciprocate under the guide of the direction subassembly that slider and slide rail cooperation formed, guarantee that the cutting bed is more stable at the in-process that rises, and more in the same direction as smooth, great improvement elevating assembly's work efficiency.

To sum up, the utility model has the advantages of simple structure, design benefit, the stable and cutting bed switching efficiency height of lifting, the laser cutting of the sheet material that is particularly useful for.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an enlarged view of FIG. 1 at A;

FIG. 3 is an enlarged view of FIG. 1 at B;

FIG. 4 is a view showing the internal structure of the exchange table;

FIG. 5 is a view showing the installation position of the lifting device;

fig. 6 is a working state diagram of the lifting device.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Example (b):

as shown in fig. 1, the utility model provides an exchange workbench of a laser cutting machine, which comprises a main bed body 1, an exchange workbench 5 transitionally arranged on one side of the main bed body 1, and a traction device 6 arranged between the exchange workbench 5 and the main bed body 1; the exchange workbench 5 comprises a rack 51, two groups of cutting tables 52 arranged up and down and a lifting device 53 for driving the two groups of cutting tables 52 to move up and down, wherein the lifting device 53 is arranged on the rack 51 and is positioned below the two groups of cutting tables 52;

the traction device 6 comprises a driving assembly a61 fixedly mounted on the main lathe body 1, two groups of sprocket transmission assemblies a62 symmetrically arranged on two sides of the driving assembly a61, and two groups of sprocket traction assemblies 63 arranged on the main lathe body 1 and respectively in power connection with the two groups of sprocket transmission assemblies a62, wherein each sprocket traction assembly 63 comprises a sprocket 631 respectively arranged at two ends of the main lathe body 1 in the length direction and a chain 632 sleeved on the sprocket 631, and a traction wheel 633 capable of driving any cutting table 52 to move to the main lathe body 1 is arranged on the inner side of the chain 632;

the lifting device 53 comprises two groups of lifting mechanisms 531 arranged along the horizontal traction direction of the cutting table 52 and two groups of synchronous components 532 connected with the two groups of lifting mechanisms 531 for synchronous transmission, each lifting mechanism 531 comprises two groups of lifting components 5311 arranged on two sides of the cutting table 52 in bilateral symmetry and two groups of sprocket transmission components b5312 connected with the two groups of lifting components 5311 for synchronous action, each lifting component 5311 comprises a driving component b53111, two groups of driven transmission components 53112 horizontally arranged on the frame 51 at intervals and respectively corresponding to the upper parts of the sprocket transmission components b5312, and a transmission chain 53113 and a lifting chain 53114 both in transmission connection with the sprocket transmission components b5312 and the driven transmission components 53112, and the driving component b53111 is fixedly connected with the free ends of the lifting chains 53114 far away from the synchronous components 532.

It should be noted that the main bed 1 is provided with a laser cutting device 2.

It should be noted that the driving assembly a61 is preferably a motor driving assembly.

As shown in fig. 2, as a preferred embodiment, the end portions of the two cutting tables 52 facing the main bed 1 are both provided with a limiting block a521, and a guide groove a5211 in sliding fit with the traction wheel 633 is formed on the limiting block a 521; the other end parts of the two groups of cutting tables 52 opposite to the limiting blocks a521 are provided with limiting assemblies 522.

Further, as shown in fig. 3, the limiting assembly 522 includes a limiting plate 5221 fixed at one end of the frame 51 far away from the main bed 1 and a limiting block b5222 mounted on the cutting table 52, and a guiding groove b52221 slidably fitted with the limiting plate 5221 is formed in the limiting block b 5222.

It should be noted that, when the lifting device 53 lifts the two sets of cutting tables 52 to move up, the limiting block a521 on the cutting table 52 located below is aligned with the sprocket traction assembly 63, the traction wheel 633 is clamped in the guiding groove a5221, then the driving assembly a61 works, and the sprocket transmission assembly a62 drives the chain 632 to rotate, so that the traction wheel 633 guides the cutting table 52 to the main bed 1, at this time, the guiding groove 52221 in the limiting block b5222 of the cutting table 52 located above is matched with the limiting plate 5221 to limit the cutting table 52, so as to prevent the cutting table 52 from moving left and right during loading or unloading, and ensure production safety.

It should be further noted that when the upper cutting table 52 is guided onto the main bed 1 by the traction wheel 633, the guiding groove 52221 in the limiting block b5222 of the lower cutting table 52 is engaged with the limiting plate 5221.

As shown in fig. 4, in a preferred embodiment, the exchange table 5 further includes a moving frame 54 for holding two sets of the cutting tables 52 and a plurality of sets of guiding assemblies 55; the two groups of cutting tables 52 are arranged on the moving frame 54 in a left-right sliding manner; the guide assemblies 55 are respectively disposed at the middle positions of the two driven transmission members 53112 of the same lifting assembly 5311.

Further, the guide assembly 55 includes a slide rail 551 vertically installed on the frame 51 and a slide block 552 fixed on the moving frame 54 and slidably engaged with the slide rail 551.

It should be noted that the guide assembly 55 is disposed in the middle of the two sets of driven transmission members 53112 of the same lifting assembly 5311, so as to ensure uniform stress on both sides of the guide assembly 55, prevent the movable frame 54 from being jammed during the upward movement process, and further ensure the stability of the movable frame 54 during the upward movement process.

As shown in fig. 5 and 6, the sprocket driving assembly b5312 includes two sprocket driving members 53121, the sprocket driving members 53121 respectively include a driving shaft 531211 and a sprocket set 531212 mounted at two ends of the driving shaft 531211 and respectively engaged with the driving chain 53113 and the lifting chain 53114 for driving.

Further, the synchronizing assembly 532 includes a synchronizing chain 5321 drivingly connected to the adjacent sprocket 531212 of the two lifting assemblies 5311 on the same side of the frame 51.

Furthermore, the driving assemblies b53111 are all oil cylinders, and are all obliquely hinged to the frame 51, the power output ends of the driving assemblies b53111 are fixedly connected with the lifting chain 53114, and the driving assemblies b53111 are all arranged in parallel and respectively drive the transmission chain 53113, the lifting chain 53114 and the synchronization chain 5321 to rotate in the same direction.

It should be noted that, as shown in fig. 6, the driving component b53111 pulls the lifting chain 53114, the driven transmission component 53112 correspondingly disposed thereon rotates, and simultaneously drives the transmission chain 53113 and the chain wheel set 531212 to rotate and transmit power to another driven transmission component 53112 in the same lifting component 5311, so that the lifting chain 53114 cooperating with the driven transmission component 53112 is pulled, and since the driving component b53111 is disposed in parallel, the synchronous chain 5321 will not be jammed when the lifting mechanism 531 works.

It should be noted that the synchronous chain 5321 and the transmission shaft 531211 enable the power generated by each driving assembly b53111 to be linked, so that the moving frame 54 and the two cutting tables 52 are integrally lifted as long as any one of the lifting assemblies 5311 works, thereby greatly improving the synchronism of the device.

Furthermore, the exchange workbench 5 is also provided with a hydraulic station, and the hydraulic station is connected with each driving assembly b53111 through a distribution valve.

It should be noted that the hydraulic station supplies oil to each driving assembly b53111 through a distribution valve, so that the consistency of power generated by each driving assembly b53111 is ensured, and the lifting synchronism of the lifting assembly 5311 and the moving stability of the cutting table 52 are further improved.

As shown in fig. 1, the main bed 1 further includes a blanking trolley 11 and a dust removal system 12, and the blanking trolleys 11 are arranged at the bottom of the main bed 1; the dust removing system 12 comprises a plurality of air ports 121 arrayed along the length direction of the main lathe body 1 and arranged on the inner walls of the two sides of the main lathe body 1, air suction valve assemblies 122 arranged corresponding to the air ports 121 and fixedly installed on the main lathe body 1, and dust channels 123 symmetrically arranged on the two sides of the main lathe body 1 and communicated with the air ports 121 and external dust collecting equipment.

It should be noted that the blanking trolley 11 is used for receiving the small materials falling into the bottom of the main bed 1 from the gap of the cutting table 52, and the tuyere 121, the air suction valve assembly 122 and the dust channel 123 collect the dust generated in the cutting process of the cutting device 2, so as to maintain a good and comfortable laser working environment.

The working process is as follows:

the utility model discloses in, drive assembly b53111 work and propelling movement promote chain 53114, correspond with this promotion chain 53114 and set up driven transmission member 53112 rotates, drives simultaneously drive chain 53113 and sprocket group 531212 rotates and with power transmission to same another in the lifting assembly 5311 driven transmission member 53112 and then with this driven transmission member 53112 complex promote chain 53114 is being promoted, and then realizes two sets of moving down when cutting bed 52, when being located the top cutting bed 52 one end guide way a5211 in stopper a521 moves down, traction wheel 633 blocks into in this guide way a5211, is located this cutting bed 52 the other end this moment guide way b52221 in stopper b5222 with limiting plate 5221 breaks away from the cooperation, afterwards drive assembly a61 work is through sprocket drive assembly a62 sprocket 631 and chain 632 rotate and then traction wheel drives the cutting bed 52 moves to advance after the bed 1 goes up to advance Performing row cutting, wherein loading is performed on the cutting table 52 positioned below; after the cutting is completed, the driving assembly a61 is turned over, so that the cutting table 52 located above is pushed onto the moving frame 54 by the traction wheel 633, then the lifting chain 53114 is pulled by the driving assembly b53111, the driven transmission member 53112, the transmission chain 53113, the chain wheel set 531212 and the synchronous chain 5321 are all rotated reversely with respect to the downward moving process, so that the two sets of cutting tables 52 are lifted simultaneously, at this time, the guiding groove a5211 in the limiting block a521 at one end of the cutting table 52 located above moves upwards to be separated from the traction wheel 633, the guiding groove b52221 in the limiting block b5222 at the other end of the cutting table 52 is in clamping fit with the limiting plate 5221, and at the same time, the guiding groove a5211 in the limiting block a521 of the cutting table 52 located below moves upwards, and the traction wheel 633 is clamped in the guiding groove b5221 at the other end of the cutting table 52, and the guiding groove b5221 at the other end of, then the traction wheel 633 drives the cutting table 52 positioned below to enter the main bed body 1 for cutting operation, meanwhile, the cutting table positioned above can perform lower plate material production operation and upper plate material operation in sequence, and the two groups of cutting tables 52 perform circular operation according to the process.

Claims

1. An exchange workbench of a laser cutting machine comprises a main machine body (1), and is characterized by also comprising an exchange workbench (5) arranged on one side of the main machine body (1) in a transition manner and a traction device (6) arranged between the exchange workbench (5) and the main machine body (1); the exchange workbench (5) comprises a rack (51), two groups of cutting tables (52) arranged up and down and a lifting device (53) for driving the two groups of cutting tables (52) to move up and down, wherein the lifting device (53) is arranged on the rack (51) and is positioned below the two groups of cutting tables (52);

the traction device (6) comprises a driving assembly a (61) fixedly mounted on the main bed body (1), two groups of chain wheel transmission assemblies a (62) symmetrically arranged on two sides of the driving assembly a (61) and two groups of chain wheel traction assemblies (63) arranged on the main bed body (1) and respectively in power connection with the two groups of chain wheel transmission assemblies a (62), each chain wheel traction assembly (63) comprises a chain wheel (631) respectively arranged at two ends of the main bed body (1) in the length direction and a chain (632) sleeved on the chain wheel (631), and a traction wheel (633) capable of dragging any cutting table (52) to move to the main bed body (1) is arranged on the inner side of the chain (632);

the lifting device (53) comprises two groups of lifting mechanisms (531) arranged along the horizontal traction direction of the cutting table (52) and a synchronous component (532) connected with the two groups of lifting mechanisms (531) for synchronous transmission, the lifting mechanism (531) comprises lifting components (5311) which are arranged at the two sides of the cutting table (52) in a bilateral symmetry way and chain wheel transmission components b (5312) which are connected with the two groups of lifting components (5311) and act synchronously, the lifting component (5311) comprises a driving component b (53111), two groups of driven transmission components (53112) which are horizontally arranged on the frame (51) at intervals and respectively corresponding to the upper parts of the chain wheel transmission components b (5312), and a transmission chain (53113) and a lifting chain (53114) which are in transmission connection with the chain wheel transmission components b (5312) and the driven transmission components (53112), the driving component b (53111) is fixedly connected with the free end of the lifting chain (53114) which is far away from the synchronous component (532).

2. The laser cutting machine exchange workbench according to claim 1, wherein the ends of the two cutting tables (52) facing the main bed (1) are respectively provided with a limiting block a (521), and the limiting block a (521) is provided with a guide groove a (5211) in sliding fit with the traction wheel (633); the other end of the two groups of cutting tables (52) opposite to each other provided with a limiting block a (521) is provided with a limiting assembly (522).

3. The laser cutting machine exchange workbench according to claim 2, wherein the limiting assembly (522) comprises a limiting plate (5221) fixed at one end of the frame (51) far away from the main bed (1) and a limiting block b (5222) mounted on the cutting table (52), and the limiting block b (5222) is provided with a guide groove b (52221) in sliding fit with the limiting plate (5221).

4. A laser cutting machine exchange bench according to claim 1, characterized in that the exchange bench (5) further comprises a moving frame (54) for holding two sets of cutting tables (52) and a plurality of sets of guiding assemblies (55); the two groups of cutting tables (52) are arranged on the moving frame (54) in a left-right sliding manner; the guide assemblies (55) are respectively arranged in the middle of the two driven transmission members (53112) of the same lifting assembly (5311).

5. The laser cutting machine exchange bench according to claim 4, characterized in that the guide assembly (55) comprises a slide rail (551) vertically mounted on the frame (51) and a slide block (552) fixed on the moving frame (54) and slidably engaged with the slide rail (551).

6. The laser cutting machine exchange workbench according to claim 1, wherein the sprocket drive assembly b (5312) comprises two sprocket drive members (53121), the sprocket drive members (53121) respectively comprise a drive shaft (531211) and sprocket sets (531212) mounted at two ends of the drive shaft (531211) and respectively meshed with the drive chain (53113) and the lifting chain (53114).

7. A laser cutting machine exchange bench according to claim 6, characterized in that the synchronization assembly (532) comprises a synchronization chain (5321) drivingly connecting adjacent sprocket sets (531212) of two of the lifting assemblies (5311) located on the same side of the frame (51).

8. The laser cutting machine exchange workbench according to claim 7, wherein the driving assemblies b (53111) are all oil cylinders, and are all obliquely hinged on the frame (51), the power output ends of the driving assemblies b (53111) are fixedly connected with the lifting chains (53114), and the driving assemblies b (53111) are all arranged in parallel and respectively drive the transmission chains (53113), the lifting chains (53114) and the synchronous chains (5321) to rotate towards the same direction.

9. Laser cutting machine swashplate according to claim 1, characterized in that the swashplate (5) is also provided with a hydraulic station connected to each of the drive assemblies b (53111) by means of a distribution valve.

10. The laser cutting machine exchange workbench according to claim 1, wherein the main bed (1) further comprises a blanking trolley (11) and a dust removal system (12), wherein a plurality of blanking trolleys (11) are arranged at the bottom of the main bed (1); the dust removal system (12) comprises a plurality of air ports (121) which are arrayed along the length direction of the main lathe body (1) and are arranged on the inner walls of the two sides of the main lathe body (1), air suction valve assemblies (122) which are correspondingly arranged with the air ports (121) and are fixedly installed on the main lathe body (1), and dust channels (123) which are symmetrically arranged on the two sides of the main lathe body (1) and are communicated with the air ports (121) and external dust collection equipment.