CN213004163U

CN213004163U - Special multi-station numerical control machining center for helmet

Info

Publication number: CN213004163U
Application number: CN202021946155.1U
Authority: CN
Inventors: 陶龙
Original assignee: Dongguan Xinsen Automation Technology Co ltd
Current assignee: Dongguan Xinsen Automation Technology Co ltd
Priority date: 2020-09-08
Filing date: 2020-09-08
Publication date: 2021-04-20
Anticipated expiration: 2030-09-08

Abstract

The utility model discloses a special multi-station numerical control machining center for helmets, which comprises a workbench, a scrap collecting device, a mounting seat, a first power device, a rocker arm, a rotary table, an adsorption type jig, a portal frame, an X-axis sliding table, a Z-axis sliding table, a main shaft fixing plate and a main shaft device; two first openings are arranged on a top plate of the workbench in parallel, and the two scrap collecting devices are both arranged at the lower part of the workbench and are respectively butted with one first opening; the upper side of each first opening is also provided with a mounting seat in a sliding manner; each mounting seat is driven by a first power device arranged on the workbench to move along the Y-axis direction; each mounting seat is rotatably provided with one rocker arm and a second power device for driving the rocker arm to rotate around the X-axis direction; two rotary tables are rotatably arranged on each rocker arm. The utility model has the advantage of high production efficiency.

Description

Special multi-station numerical control machining center for helmet

Technical Field

The utility model belongs to the technical field of the numerical control equipment technique and specifically relates to a dedicated multistation numerical control machining center of helmet.

Background

The numerical control machining center is one of numerical control machines with highest yield and most extensive application in the world at present. The comprehensive processing capacity is strong, a workpiece can finish more processing contents after being clamped once, the processing precision is high, batch workpieces with medium processing difficulty are processed, the efficiency is 5-10 times that of common equipment, especially, the batch processing method can finish processing which cannot be finished by a plurality of common equipment, and the batch processing method is more suitable for single-piece processing or medium-small batch multi-variety production with complex shapes and high precision requirements. The existing helmet numerical control machining center is only provided with one workpiece fixture for fixing the helmet and one corresponding spindle device, so that the helmet numerical control machining center can only operate one helmet at a time, and the defects that the machining efficiency of the helmet numerical control machining center is low are increasingly revealed along with the improvement of yield requirements.

SUMMERY OF THE UTILITY MODEL

The utility model provides a technical problem provide a dedicated multistation numerical control machining center of helmet to the problem among the above-mentioned prior art, the purpose can be simultaneously to a plurality of helmets the processing operation in a helmet numerical control machining center to improve helmet numerical control machining center's production efficiency.

In order to solve the technical problem, the utility model discloses a technical scheme as follows:

a multi-station numerical control machining center special for helmets comprises a workbench, a scrap collecting device, a mounting seat, a first power device, a rocker arm, a rotary table, an adsorption type jig, a portal frame, an X-axis sliding table, a Z-axis sliding table, a main shaft fixing plate and a main shaft device; two first openings are arranged on a top plate of the workbench in parallel, and the two scrap collecting devices are both arranged at the lower part of the workbench and are respectively butted with one first opening; the upper side of each first opening is also provided with a mounting seat in a sliding manner; each mounting seat is driven by a first power device arranged on the workbench to move along the Y-axis direction; each mounting seat is rotatably provided with one rocker arm and a second power device for driving the rocker arm to rotate around the X-axis direction; two rotary tables are rotatably mounted on each rocker arm, two third power devices are further arranged on the rocker arms, each third power device drives one rotary table to rotate, and the axis of rotation of each rotary table is perpendicular to the X axis; each rotary table is provided with an adsorption type jig for fixing a helmet; the working table is also provided with a portal frame; the X-axis sliding table is arranged on the portal frame and drives the Z-axis sliding table to move between the two first openings along the X-axis direction, and the Z-axis sliding table drives the main shaft fixing plate to move along the Z-axis direction; and two spindle devices are arranged on the spindle fixing plate and respectively correspond to the two adsorption type jigs on the same rocker arm one to one.

As a further elaboration of the above technical solution:

in the above technical scheme, the adsorption jig comprises a bottom plate and a vacuum suction nozzle; the rotary table is in a square plate shape, and two adjacent edges at the top of the rotary table are provided with leaning tables; the bottom plate is also in a square plate shape, and two side walls of the bottom plate are respectively abutted to the corresponding side walls of the leaning table and then fixedly connected with the rotary table; a positioning structure matched with the helmet is formed on the upper part of the bottom plate; the vacuum suction nozzle is arranged on the bottom plate and used for adsorbing and fixing the helmet.

In the technical scheme, the scrap collecting device comprises a scrap discharge groove and a scrap collecting box; the bottom of the chip groove is a slope surface; a chip removal port is formed in the lower end of the chip removal groove; the chip collecting box is in butt joint with the chip removing port.

In the above technical solution, the spindle device includes an electric spindle and a tool driven by the electric spindle; a main shaft fixing seat is arranged on the main shaft fixing plate; a ring body matched with the electric spindle is formed on the front side of the spindle fixing seat, a gap is formed in the periphery of the ring body, and two ends of the gap of the ring body are respectively formed outwards to form fixing parts; a threaded hole is formed in the fixing portion close to the main shaft fixing plate, and a counter bore matched with the threaded hole is formed in the fixing portion far away from the main shaft fixing plate.

In the above technical solution, the first power device includes a first servo motor, a lead screw and a lead screw nut; the screw rod is rotatably arranged on the workbench along the Y-axis direction and is in power connection with an output shaft of a first servo motor arranged on the workbench; the screw rod nut is in threaded fit with the screw rod; the lead screw nut is fixed at the lower part of the mounting seat; the lower part of the mounting seat is also provided with Y-direction sliding blocks at two ends along the X-axis direction respectively, each Y-direction sliding block is in sliding fit with one Y-direction guide rail, and the two Y-direction guide rails are fixed at two sides of the corresponding first opening.

In the above technical solution, the second power device includes a first motor base, a second servo motor, and a first speed reducer; the first motor base is arranged on the mounting base, and the second servo motor is fixed on the first motor base; the output shaft of the second servo motor is in power connection with the input end of the first speed reducer; the output end of the first speed reducer is fixedly connected with one end of the rocker arm.

In the above technical solution, the third power device includes a second motor base, a third servo motor and a second speed reducer; the rocker arm is of a hollow structure, and the second motor base is arranged in the rocker arm; the third servo motor is arranged on the second motor base; a driving belt wheel is sleeved on the output shaft of the third servo motor; the second speed reducer is fixed in the rocker arm; a driven belt wheel is sleeved on the input end of the second speed reducer, and the driven belt wheel and the driving belt wheel are driven by a synchronous belt; the second speed reducer drives the rotary table to rotate.

In the technical scheme, the upper part of the workbench is also provided with a protective cover, the top of the protective cover is provided with a bulge, and the bulge is provided with a plurality of heat dissipation holes; the protective cover is close to the side wall of the rocker arm and is provided with a push-pull door plate, and the protective cover is close to the push-pull door plate and is provided with an installation cabinet for installing a control panel.

The beneficial effects of the utility model reside in that:

1. set up a plurality of revolving platforms on the rocking arm, set up a work piece tool on every revolving platform, set up a plurality of corresponding spindle unit on the main shaft fixed plate, and then make the utility model discloses can process a plurality of helmets simultaneously, improve the utility model discloses a production efficiency.

2. Set up sweeps recovery unit, be convenient for collect and clear up the sweeps that produces in the course of working, play better environmental protection effect.

3. Through setting up two mount pads for spindle unit is when carrying out the processing operation to one of them mount pad, and the operator can go on unloading operation on another mount pad, has improved the efficiency of production, can also be by two mount pad Y axle direction dislocation of first power device drive simultaneously, and then makes the operator can keep away from spindle unit, reduces the risk that the operator was accidentally injured by spindle unit.

Drawings

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

FIG. 2 is a perspective view of the present invention with the protective cover removed;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

fig. 4 is an exploded view of a portion of the components at the rocker arm.

The reference numbers in the figures are respectively: 1. a work table; 2. a scrap collecting device; 3. a mounting seat; 4. a first power unit; 5. a rocker arm; 6. a second power unit; 7. a turntable; 8. a third power unit; 9. an adsorption jig; 10. a gantry; 11. an X-axis sliding table; 12. a Z-axis sliding table; 13. a main shaft fixing plate; 14. a spindle device; 15. a base plate; 16. a display stand; 17. a chip groove; 18. a scrap collecting box; 19. an electric spindle; 20. a cutter; 21. a main shaft fixing seat; 22. a ring body; 23. a fixed part; 24. a first servo motor; 25. a screw rod; 26. a Y-direction slide rail; 27. a first motor mount; 28. a second servo motor; 29. a first speed reducer; 30. a second motor mount; 31. a third servo motor; 32. a second speed reducer; 33. a driving pulley; 34. a driven pulley; 35. a protective cover; 36. a protrusion; 37. a push-pull door panel; 38. and (6) installing the cabinet.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The embodiments described by referring to the drawings are exemplary and intended to be used for explaining the present application and are not to be construed as limiting the present application. In the description of the present application, 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 are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and thus should not be considered limiting. 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 application, "a plurality" means two or more unless specifically limited otherwise. In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate. In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

Fig. 1-4 exemplify the specific embodiment of a dedicated multistation numerical control machining center of helmet, refer to fig. 1-4, a dedicated duplex position numerical control machining center of helmet, including workstation 1, sweeps collection device 2, mount pad 3, first power device 4, rocking arm 5, revolving platform 7, absorption formula tool 9, portal frame 10, X axle slip table 11, Z axle slip table 12, main shaft fixed plate 13 and spindle unit 14. Two first openings are arranged on a top plate of the workbench 1 in parallel along the X-axis direction, and the two scrap collecting 2 devices are arranged on the lower portion of the workbench 1 and are respectively in butt joint with the first openings. The upper side of each first opening is also provided with a mounting seat 3 in a sliding way; each mounting seat 3 is driven by a first power device 4 arranged on the workbench to move along the Y-axis direction. Each mounting seat 3 is rotatably provided with one rocker arm 5 and a second power device 6 for driving the rocker arms to rotate around the X-axis direction. Two rotary tables 7 are rotatably mounted on each rocker arm 5, two third power devices 8 are further arranged on the rocker arms 5, the two third power devices 8 respectively drive one rotary table 7 to rotate, and the axis of rotation of each rotary table 7 is perpendicular to the X axis; each rotary table 7 is provided with an adsorption type jig 9 for fixing a helmet, and the first power device, the second power device and the third power device are matched to form a three-axis linkage function of the adsorption type jig 9. The workbench 1 is also provided with a portal frame 10; the X-axis sliding table 11 is arranged on the portal frame 10 and drives the Z-axis sliding table 12 to move between the two first openings along the X-axis direction, and the Z-axis sliding table 12 drives the main shaft fixing plate 13 to move along the Z-axis direction; two spindle devices 14 are arranged on the spindle fixing plate 13, the two spindle devices 14 correspond to the two adsorption type jigs 9 on the rocker arm 5 one by one, and then the X-axis sliding table 11 and the Z-axis sliding table 12 form two-axis linkage of the spindle devices. The spindle device 14 and the adsorption type jig 9 on one rocker arm 5 form five-axis linkage respectively, and then the spindle device 14 and the adsorption type jig 9 on two rocker arms 5 form ten-axis linkage. Here, it should be further noted that: any one of linear sliding tables in the prior art can be selected for the X-axis sliding table 11 and the Z-axis sliding table 12, including but not limited to a ball screw type sliding table, a cylinder sliding table, a linear motor sliding table, etc., and in this embodiment, the ball screw type sliding table on the market is selected for the Y-axis sliding table 9, the X-axis sliding table 11, and the Z-axis sliding table 12.

The utility model discloses a theory of operation does: firstly, two end points of the mounting seat 3 sliding along the Y-axis direction are respectively set as a feeding and discharging station and a processing station, and the feeding and discharging stations of the two mounting seats 3 are arranged on the same side; then, when one of the mounting seats 3 is positioned at the loading and unloading station, the other mounting seat 3 is positioned at the processing station, and at the moment, an operator carries out loading and unloading operation on the workbench 3 positioned at the loading and unloading station; therefore, the utility model can simultaneously carry out feeding and discharging operation and processing operation, and has higher production efficiency compared with the alternative feeding and discharging operation and processing operation of a single-station structure; in addition, each rocker arm is last to be provided with two absorption formula tool 9, can process two helmets simultaneously, and production efficiency further improves.

Further, the adsorption jig 9 comprises a bottom plate 15 and a vacuum suction nozzle; the rotary table 7 is in a square plate shape, and two adjacent edges at the top of the rotary table are provided with a leaning table 16; the bottom plate 15 is also in a square plate shape, and two side walls of the bottom plate respectively abut against the corresponding side walls of the abutting table 16 and then are fixedly connected with the rotary table 7; a positioning structure matched with the helmet is formed on the upper part of the bottom plate 15, and specifically, the positioning structure is a convex shape matched with the inner wall surface of the helmet; the vacuum suction nozzle is installed on the convex shape of the bottom plate 15, is connected with an external air source and is used for adsorbing and fixing the helmet. When the installation, will bottom plate 15 supports and leans on can accomplish fast on the platform 16 the accurate positioning of bottom plate 15, then will bottom plate 15 with revolving platform 7 bolted connection locking can, make the utility model has the advantages of simple installation.

Further, the scrap collecting device comprises a scrap discharge groove 17 and a scrap collecting box 18; the bottom of the chip groove 17 is a slope surface; the rocker arm 5 is positioned above the higher end of the slope surface; a chip removal port is formed at the lower end of the chip removal groove 17; the chip collecting box 18 is butted with the chip discharging port; the bottom of the scrap collecting box 18 is detachably provided with a filter screen, and the bottom of the scrap collecting box 18 is communicated to a cooling liquid system of the workbench through a guide pipe. In the actual use process: the cooling liquid system washes and cools helmet spray cooling liquid in real time through the spray header, the cooling liquid and the sweeps flow into the scrap collecting box 18 after being guided by the scrap discharge groove 17, then the sweeps and the cooling liquid are filtered and separated by the filter screen, and finally the cooling liquid filtered in the scrap collecting box 18 is sucked back by a pump body in the cooling liquid system for secondary use. Therefore, the utility model discloses reduce the pollution of sweeps to the environment, can also carry out reutilization to the coolant liquid, be favorable to environmental protection.

Further, the spindle device 14 includes an electric spindle 19 and a tool 20 driven by the electric spindle 19; a main shaft fixing seat 21 is arranged on the main shaft fixing plate 13; a ring body 22 matched with the electric spindle 19 is formed on the front side of the spindle fixing seat 21, a gap is formed on the peripheral side of the ring body 22, and fixing parts 23 are respectively formed outwards at two ends of the gap of the ring body 22; a threaded hole is formed in the fixing portion 23 close to the main shaft fixing plate 13, and a countersunk hole matched with the threaded hole is formed in the fixing portion 23 far away from the main shaft fixing plate 13. The working principle of the spindle fixing seat 21 is as follows: in an initial state, the inner diameter of the ring body 22 is larger than the outer diameter of the electric spindle 19, so that the electric spindle 19 can penetrate into the ring body 22 from top to bottom, after the position of the electric spindle 19 is adjusted, a bolt penetrates through the counter bore and then is screwed into the threaded hole to lock the two fixing portions 23, and finally the inner diameter of the ring body 22 is reduced to clamp the electric spindle 19. Therefore, the utility model has the advantages of easy and simple disassembly and assembly and easy adjustment. In addition, in order to increase the strength of the ring body 22, a rib is formed on the outer side wall of the ring body 22 away from the notch.

Preferably, the first power device 4 comprises a first servo motor 24, a screw 25 and a screw nut. The screw rod 25 is rotatably arranged on the workbench 1 along the Y-axis direction and is in power connection with an output shaft of a first servo motor 24 arranged on the workbench 1; the screw nut is in threaded fit with the screw 25; the screw rod nut is fixed at the lower part of the mounting seat 3; two ends of the lower portion of the mounting base 3 in the X-axis direction are respectively provided with a Y-direction sliding block, each Y-direction sliding block is in sliding fit with one Y-direction guide rail 26, and the two Y-direction guide rails 26 are fixed on two sides of the corresponding first opening. When the screw rod type servo motor works, the first servo motor 24 is connected to an external power supply and drives the screw rod 25 to rotate, and when the screw rod 25 rotates, the screw rod nut and the mounting seat 3 are driven to synchronously slide along the Y-axis direction.

Preferably, the second power device 6 includes a first motor base 27, a second servo motor 28, and a first speed reducer 29; the first motor base 27 is arranged on the mounting base 3, and the second servo motor 28 is fixed on the first motor base 27; the output shaft of the second servo motor 28 is in power connection with the input end of the first speed reducer 29; the output end of the first speed reducer 29 is fixedly connected with one end of the rocker arm 5. When the swing arm type electric vehicle is used, the second servo motor 28 is connected to an external power supply and drives the first speed reducer 29 to work, and the first speed reducer 29 drives the swing arm 5 to rotate. The angle of rotation of the rocker arm 4 is ± 120 °.

Further, the third power device 8 comprises a second motor base 30, a third servo motor 31 and a second speed reducer 32; the rocker arm 5 is of a hollow structure, and the second motor base 30 is arranged in the rocker arm 5; the third servo motor 31 is mounted on the second motor base 30; a driving belt wheel 33 is sleeved on an output shaft of the third servo motor 31; the second speed reducer 32 is fixed in the rocker arm 5; a driven belt wheel 34 is sleeved on the input end of the second speed reducer 32, and the driven belt wheel 34 and the driving belt wheel 33 are in transmission through a synchronous belt; the second speed reducer 32 drives the turntable 7 to rotate. When in work: firstly, the third servo motor 31 is connected to an external power supply to start working; then, the output shaft of the third servo motor 31 drives the second speed reducer 32 to work in a belt wheel transmission mode; finally, the second speed reducer 32 drives the rotary table 7 to rotate. The turntable 6 is rotatable through 360 °.

Further, the upper portion of workstation 1 still is equipped with protection casing 35, the top of protection casing 35 is equipped with arch 36, protection casing 35 is right the part on workstation 1 upper portion plays the protection effect, can also prevent that the sweeps that produces from spattering to causing the incident on the human body in the course of working, simultaneously by protruding 36 forms a confession the gliding clearance of Z axle slip table 12 has reduced the occupation space of protection casing 35 makes the utility model discloses a structure is compacter. A plurality of heat dissipation holes are formed in the bulge 36; a push-pull door panel 37 is mounted on the side wall of the protective cover 35 close to the rocker arm 5, and a mounting cabinet 38 for mounting a control panel is arranged on the protective cover 35 close to the push-pull door panel 37; and a tool magazine is arranged on the inner side wall of the protective cover 35 far away from the push-pull door plate 37. Every the tool magazine is including the blade disc, blade disc driving motor and the install bin that are used for depositing the cutter, the install bin is established the inside wall of protection casing 35, the blade disc is installed in the install bin, blade disc driving motor in the install bin and with the blade disc transmission is connected, thereby the drive the blade disc takes place to rotate.

The above is not intended to limit the technical scope of the present invention, and any modifications, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention are all within the scope of the technical solution of the present invention.

Claims

1. A multi-station numerical control machining center special for helmets is characterized by comprising a workbench, a scrap collecting device, a mounting seat, a first power device, a rocker arm, a rotary table, an adsorption type jig, a portal frame, an X-axis sliding table, a Z-axis sliding table, a main shaft fixing plate and a main shaft device; two first openings are arranged on a top plate of the workbench in parallel, and the two scrap collecting devices are both arranged at the lower part of the workbench and are respectively butted with one first opening; the upper side of each first opening is also provided with a mounting seat in a sliding manner; each mounting seat is driven by a first power device arranged on the workbench to move along the Y-axis direction; each mounting seat is rotatably provided with one rocker arm and a second power device for driving the rocker arm to rotate around the X-axis direction; two rotary tables are rotatably mounted on each rocker arm, two third power devices are further arranged on the rocker arms, each third power device drives one rotary table to rotate, and the axis of rotation of each rotary table is perpendicular to the X axis; each rotary table is provided with an adsorption type jig for fixing a helmet; the working table is also provided with a portal frame; the X-axis sliding table is arranged on the portal frame and drives the Z-axis sliding table to move between the two first openings along the X-axis direction, and the Z-axis sliding table drives the main shaft fixing plate to move along the Z-axis direction; and two spindle devices are arranged on the spindle fixing plate and respectively correspond to the two adsorption type jigs on the same rocker arm one to one.

2. The multi-station numerical control machining center special for the helmet as claimed in claim 1, wherein the adsorption type jig comprises a bottom plate and a vacuum suction nozzle; the rotary table is in a square plate shape, and two adjacent edges at the top of the rotary table are provided with leaning tables; the bottom plate is also in a square plate shape, and two side walls of the bottom plate are respectively abutted to the corresponding side walls of the leaning table and then fixedly connected with the rotary table; a positioning structure matched with the helmet is formed on the upper part of the bottom plate; the vacuum suction nozzle is arranged on the bottom plate and used for adsorbing and fixing the helmet.

3. The multi-station numerical control machining center special for the helmet as claimed in claim 2, wherein the scrap collecting device comprises a scrap discharge groove and a scrap collecting box; the bottom of the chip groove is a slope surface; a chip removal port is formed in the lower end of the chip removal groove; the chip collecting box is in butt joint with the chip removing port.

4. The multi-station numerical control machining center special for the helmet as claimed in claim 3, wherein the spindle device comprises an electric spindle and a cutter driven by the electric spindle; a main shaft fixing seat is arranged on the main shaft fixing plate; a ring body matched with the electric spindle is formed on the front side of the spindle fixing seat, a gap is formed in the periphery of the ring body, and two ends of the gap of the ring body are respectively formed outwards to form fixing parts; a threaded hole is formed in the fixing portion close to the main shaft fixing plate, and a counter bore matched with the threaded hole is formed in the fixing portion far away from the main shaft fixing plate.

5. The multi-station numerical control machining center special for the helmet as claimed in any one of claims 1 to 4, wherein the first power device comprises a first servo motor, a lead screw and a lead screw nut; the screw rod is rotatably arranged on the workbench along the Y-axis direction and is in power connection with an output shaft of a first servo motor arranged on the workbench; the screw rod nut is in threaded fit with the screw rod; the lead screw nut is fixed at the lower part of the mounting seat; the lower part of the mounting seat is also provided with Y-direction sliding blocks at two ends along the X-axis direction respectively, each Y-direction sliding block is in sliding fit with one Y-direction guide rail, and the two Y-direction guide rails are fixed at two sides of the corresponding first opening.

6. The multi-station numerical control machining center special for the helmet as claimed in claim 5, wherein the second power device comprises a first motor base, a second servo motor and a first speed reducer; the first motor base is arranged on the mounting base, and the second servo motor is fixed on the first motor base; the output shaft of the second servo motor is in power connection with the input end of the first speed reducer; the output end of the first speed reducer is fixedly connected with one end of the rocker arm.

7. The multi-station numerical control machining center special for the helmet as claimed in claim 1, wherein the third power device comprises a second motor base, a third servo motor and a second speed reducer; the rocker arm is of a hollow structure, and the second motor base is arranged in the rocker arm; the third servo motor is arranged on the second motor base; a driving belt wheel is sleeved on the output shaft of the third servo motor; the second speed reducer is fixed in the rocker arm; a driven belt wheel is sleeved on the input end of the second speed reducer, and the driven belt wheel and the driving belt wheel are driven by a synchronous belt; the second speed reducer drives the rotary table to rotate.

8. The multi-station numerical control machining center special for the helmet as claimed in claim 1, wherein a protective cover is further arranged on the upper portion of the workbench, a protrusion is arranged at the top of the protective cover, and a plurality of heat dissipation holes are formed in the protrusion; the protective cover is close to the side wall of the rocker arm and is provided with a push-pull door plate, and the protective cover is close to the push-pull door plate and is provided with an installation cabinet for installing a control panel.