CN114029774B - Numerical control gantry integrated machining center and machining method applying same - Google Patents

Abstract

The application relates to the technical field of planomillers, in particular to a numerical control gantry integrated machining center and a machining method using the machining center, and the machining center comprises a lathe bed, wherein at least two gantry frames are mounted on the lathe bed, and machining spindles are arranged on the gantry frames; the machining end of at least one machining main shaft on the lathe bed is set as a rough machining station, and the machining end of at least one machining main shaft is set as a finish machining station; and the lathe bed is provided with a movable clamping device which is used for clamping a workpiece and conveying the workpiece to the finish machining station or the rough machining station. This application has and is convenient for transfer fast, the work piece is waited to process in the location, reduces the hand labor volume, improves the machining efficiency's of work piece in batches effect.

Description

Numerical control gantry integrated machining center and machining method applying same

Technical Field

The application relates to the technical field of planomillers, in particular to a numerical control gantry integrated machining center and a machining method applying the machining center.

Background

The planer type milling machine is provided with a door frame type frame and a horizontal long machine body, can simultaneously use a plurality of milling cutters to process the surface of a workpiece, has higher processing precision and production efficiency, and is suitable for batch production and processing of planes and inclined planes of medium and large workpieces.

A single workpiece needs to undergo multiple machining processes such as rough machining, finish machining and the like. In the related art, a planer type milling machine comprises a machine body and two portal frames arranged on the machine body, wherein the portal frames are provided with processing spindles, workpieces are clamped on the machine body and are processed by the processing spindles, and each processing spindle can be correspondingly provided with processing programs of different processing procedures.

When the planer type milling machine is used for processing workpieces in batches, when the workpieces are switched to carry out two adjacent processing procedures such as rough processing and finish processing, an operator needs to repeatedly transfer, clamp and position the workpieces on the machine body. The work of transferring, re-clamping and the like of batch workpieces among different working procedures needs to consume a large amount of labor.

Disclosure of Invention

In order to facilitate rapid transfer and positioning of workpieces to be machined and reduce the amount of manual labor, the application provides a numerical control gantry integrated machining center and a machining method applying the machining center.

First aspect, the application provides a numerical control longmen integral type machining center adopts following technical scheme:

a numerical control gantry integrated machining center comprises a lathe bed, wherein at least two gantry frames are mounted on the lathe bed, and machining spindles are arranged on the gantry frames;

the machining end of at least one machining main shaft on the lathe body is set as a rough machining station, and the machining end of at least one machining main shaft is set as a finish machining station;

and the lathe bed is provided with a movable clamping device which is used for clamping workpieces and conveying the workpieces to the finish machining station or the rough machining station.

By adopting the technical scheme, at least two portal frames can be simultaneously distributed and carry out tasks such as finish machining and rough machining, an operator can clamp a workpiece to the movable clamping device, the workpiece is conveyed to the rough machining station end through the movable clamping device to carry out rough machining, the workpiece is conveyed to the finish machining station by the movable clamping device to carry out finish machining after rough machining is finished, the re-disassembly and positioning work required by the same workpiece between adjacent processes is reduced, the workload of manual workpiece moving switching processes is favorably reduced, and the workpiece machining efficiency is improved.

Optionally, the movable clamping device comprises a workbench sliding between the finish machining station and the rough machining station, the workbench is provided with at least two, and the machine body is provided with a driving assembly for driving the workbench to slide.

Through adopting above-mentioned technical scheme, operating personnel can be in advance at least two work stations on the clamping treat the work piece of rough machining, drive the processing main shaft and carry out rough machining to one of them work piece, after rough machining is accomplished, start drive assembly and drive the workstation and transfer the work piece to the finish machining station and carry out the finish machining, the finish machining in-process of preceding work piece can drive the processing main shaft that is responsible for rough machining and carry out rough machining to another work piece, rough machining and finish machining are in turn gone on in turn, reduce the required waiting time of batch work piece between different processes and the work load of manual work piece process position of switching, improve the machining efficiency of batch work piece.

Optionally, the gantry is slidably arranged on the lathe bed, a transmission rack is arranged on the lathe bed, the extending direction of the transmission rack is parallel to the sliding direction of the gantry, a driving piece is arranged on the gantry, the output end of the driving piece is in transmission connection with a transmission gear, and the transmission gear is meshed with the transmission rack;

and a lubricating gear is rotatably arranged on the portal frame and meshed with the transmission rack.

By adopting the technical scheme, the portal frame can drive the sliding to be beneficial to expanding the coverage range of the machining end of the auxiliary machining spindle, when the portal frame needs to be driven to move, an operator starts the driving piece to drive the transmission gear to rotate, the transmission gear is meshed with the transmission rack and drives the portal frame to slide along the lathe bed, the transmission precision and the transmission speed of the transmission gear and the transmission rack are high, and the high-speed movement and the accurate positioning of the portal frame are favorably realized; after an operator sprays lubricating oil on the lubricating gear, in the moving process of the portal frame, the transmission gear is meshed and driven along the transmission rack, meanwhile, the lubricating gear is meshed with the transmission rack and lubricates teeth of the transmission rack, abrasion in the meshing and driving process of the transmission rack and the transmission gear is reduced, and the service lives of the transmission rack and the transmission gear are prolonged.

Optionally, anti-collision pads are arranged at two ends of the lathe bed in the sliding direction of the portal frame, and an anti-collision block is arranged on the portal frame towards the anti-collision pads;

travel switch stop blocks are arranged at two ends of the lathe bed in the sliding direction of the portal frame, and a travel switch for triggering and stopping the portal frame is arranged on the portal frame;

when the travel switch stop block triggers and corresponds to the travel switch, a distance exists between the anti-collision block and the opposite anti-collision pad on the same side.

By adopting the technical scheme, the collision-proof block is matched with the collision-proof pad, so that the movement range of the portal frame is favorably limited, and the possibility that the portal frame rigidly collides with two ends of the bed body is reduced; the portal frame slides towards the anticollision pad in-process, and travel switch is triggered promptly to travel switch dog before anticollision piece and the anticollision pad touching to the portal frame is stopped to the fast speed, is favorable to stopping the portal frame in advance, reduces the collision between portal frame and anticollision pad.

Optionally, a first buffer damping seat is arranged on one side, facing the anti-collision block, of the bed body, and a second buffer damping seat is arranged on the anti-collision block;

when the travel switch stop block touches the travel switch and the portal frame is not stopped, the second slow collision damping seat is matched with the first slow collision damping seat to stop the portal frame.

Through adopting above-mentioned technical scheme, when travel switch breaks down and can't in time end and stop the portal frame, before crashproof piece striking crash pad, slowly hit damping seat two and slowly hit damping seat one and contact in advance and hinder and stop the portal frame, be favorable to applying extra mechanical protection structure, avoid portal frame and crash pad direct impact, improve the protection to the portal frame.

Optionally, the first collision-slowing damping seat comprises a first collision-slowing seat arranged on the lathe bed and a first damping plate hinged to the first collision-slowing seat, a first buffer spring is arranged in the first collision-slowing seat, and the first buffer spring elastically pushes the surface of the first damping plate to face one side of the anti-collision block;

the second buffer collision damping seat comprises a second buffer collision seat arranged on the anti-collision block and a second damping plate hinged with the second buffer collision seat, a second buffer spring is arranged in the second buffer collision seat, and the second buffer spring elastically pushes the surface of the second damping plate to face the first damping plate;

before the anti-collision block collides with the anti-collision cushion, the damping plate I and the damping plate II rub against each other and extrude the buffer spring I and the buffer spring II.

By adopting the technical scheme, when the travel switch breaks down, the anti-collision block moves to the first damping plate to be jointed with the second damping plate, so that the first damping plate and the second damping plate rub against each other and extrude the first buffer spring and the second buffer spring, and the friction resistance of the first damping plate and the second damping plate and the elastic thrust of the first buffer spring and the second buffer spring gradually enhance the effect of stopping the portal frame, so that the risk of the portal frame rigidly impacting the end part of the bed body is reduced.

Optionally, a detection frame is arranged on one side of the lathe bed, and a detection robot for detecting the machining precision of the workpiece on the workbench is arranged on the detection frame.

By adopting the technical scheme, in the process of arranging the workpiece on the lathe bed, the detection robot synchronously carries out on-line detection on the machining precision of the workpiece, thereby being beneficial to rapidly adjusting the machining of the workpiece and improving the machining efficiency of the workpiece.

In a second aspect, the machining method of the numerical control gantry integrated machining center provided by the application adopts the following technical scheme:

a machining method of a numerical control gantry integrated machining center comprises the following steps:

firstly, clamping one workpiece on a rough machining station, and then driving one machining main shaft to rough machine the workpiece;

and step two, moving the workpiece after rough machining to a finish machining station, and then driving the other machining spindle to finish the workpiece.

Optionally, the workpiece after rough machining is moved to a finish machining station for finish machining, and another workpiece is clamped on the rough machining station for synchronous rough machining.

Optionally, the workpiece is switched between the rough machining station and the finish machining station by moving the clamping device.

In summary, the present application includes at least one of the following beneficial technical effects:

at least two portal frames can be simultaneously allocated and perform tasks such as finish machining, rough machining and the like, an operator can clamp a workpiece onto the movable clamping device, the workpiece is conveyed to the rough machining station end through the movable clamping device for rough machining, and the workpiece is conveyed to the finish machining station by the movable clamping device for finish machining after rough machining is completed, so that the re-assembly and disassembly positioning work required by the same workpiece between adjacent processes is reduced, the workload of manual workpiece moving switching processes is reduced, and the workpiece machining efficiency is improved;

an operator can clamp workpieces to be roughly machined on at least two workbenches in advance, a machining main shaft is driven to roughly machine one workpiece, after rough machining is completed, a driving assembly is started to drive the workbenches to transfer the workpieces to a finish machining station for finish machining, the machining main shaft in charge of rough machining can be driven to roughly machine the other workpiece in the finish machining process of the previous workpiece, rough machining and finish machining are sequentially and alternately performed, waiting time required by batch workpieces among different processes is shortened, workload of manual switching of the process positions of the workpieces is reduced, and machining efficiency of the batch workpieces is improved;

when the travel switch has a fault, the anti-collision block moves to the first damping plate to be jointed with the second damping plate, the friction resistance of the first damping plate and the second damping plate and the elastic reverse thrust of the first buffer spring and the second buffer spring gradually enhance the effect of stopping the portal frame, and therefore the risk that the portal frame rigidly impacts the end portion of the bed body is reduced.

Drawings

Fig. 1 is a schematic structural diagram of the integral machining center for embodying numerical control gantry in the embodiment of the present application.

Fig. 2 is a schematic structural diagram of a distribution structure of a first linear guide rail, a second linear guide rail, an auxiliary guide rail, a first buffer damping seat, a crash pad, a crash block, a travel switch stop and a travel switch in a non-wind organ cover state in the embodiment of the application.

Fig. 3 is a cross-sectional view of an embodiment of the present application for embodying a column, a beam, a sled, a mounting bracket, a motor cover, and a drive rack.

Fig. 4 is an enlarged view of a portion a of fig. 3 for embodying a structure in which the transmission gear and the lubricating gear engage the transmission rack.

FIG. 5 is an enlarged view of portion B of FIG. 1, illustrating the opposing configuration of the first soft bump stop and the second soft bump stop.

Fig. 6 is a schematic structural diagram of a first damping plate and a second damping plate which are connected after a travel switch stop touches a forming switch in the embodiment of the present application.

Fig. 7 is a cross sectional view for embodying the first abdicating groove, the second abdicating groove, the first buffer spring, the second buffer spring, the first auxiliary pressure spring, the second auxiliary pressure spring, the hinged support, the torsion spring and the limit tension spring in the embodiment of the present application.

Fig. 8 is a sectional view for embodying the lead screw motor group, the nut holder, and the table in the embodiment of the present application.

FIG. 9 is a sectional view of the embodiment of the application for embodying a chip falling groove, a conveying auger, a mounting cylinder, a chip cleaner and a lifter.

Reference number description, 1, bed; 10. a crash pad; 11. a travel switch stop block; 12. a chip groove is formed; 13. conveying the auger; 14. a chip removal port; 15. an organ cover; 16. an auxiliary guide rail; 17. mounting the cylinder; 171. an outlet port; 18. a chip removal motor; 19. a first buffer damping seat; 191. a first buffer collision seat; 192. a first damping plate; 1921. a first tooth edge; 1922. a first abdicating groove; 193. a first buffer spring; 194. a limit tension spring; 1941. hinging seats; 1942. a torsion spring; 195. a first auxiliary pressure spring; 2. a gantry; 20. a cross beam; 21. a column; 211. a slide plate; 22. a drive member; 221. a speed reducer; 222. a first driving motor; 23. a transmission gear; 24. lubricating the gear; 25. an anti-collision block; 26. a travel switch; 27. a mounting frame; 28. a motor cover; 29. a second buffer damping seat; 291. a second bump buffering seat; 292. a second damping plate; 2921. a second tooth edge; 2922. a second abdicating groove; 293. a second buffer spring; 294. a second auxiliary pressure spring; 295. a shackle; 3. processing a main shaft; 31. a rough machining station; 32. a finish machining station; 4. a work table; 40. processing the cradle; 41. a nut seat; 5. a first linear guide rail; 50. a drive rack; 6. a second linear guide rail; 60. a screw motor group; 601. a screw rod; 602. a second driving motor; 7. a detection frame; 70. detecting a robot; 8. a chip remover; 80. and (4) a hoisting machine.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

The embodiment of the application discloses numerical control longmen integral type machining center. Referring to fig. 1 and 2, the numerical control gantry integrated machining center includes a machine body 1, at least two gantries 2 are installed on the top surface of the machine body 1, in this embodiment, two gantries 2 are sequentially arranged along the length direction of the machine body 1, and the gantries 2 slide along the length direction of the machine body 1, and in other embodiments, the gantries 2 may be arranged in other numbers and may fix the installation positions. And a processing spindle 3 is arranged on the side wall of the portal frame 2 in a sliding manner along the horizontal direction. One of the machining spindles 3 is correspondingly provided with a rough machining program and is responsible for rough machining of workpieces, namely, the machining end of the machining spindle 3 on the machine body 1 is set as a rough machining station 31, and the other machining spindle 3 is correspondingly provided with a fine machining program and is responsible for fine machining of workpieces, namely, the machining end of the machining spindle 3 on the machine body 1 is set as a fine machining station 32.

The top surface of the lathe body 1 is provided with a movable clamping device which bears the clamped workpiece and drives the workpiece to switch stations at a rough machining station 31 and a finish machining station 32. The movable clamping device comprises at least two work tables 4, the number of the work tables 4 is two in the width direction of the bed body 1, the work tables 4 slide along the length direction of the bed body 1, and other numbers of the work tables can be set in other embodiments. The lathe bed 1 is provided with a driving component for driving the workbench 4 to slide.

The machining spindle 3 is used for carrying out corresponding machining operation on a workpiece by clamping cutters such as a milling cutter. The two portal frames 2 and the processing spindles 3 can be simultaneously distributed and perform finish machining and rough machining tasks, one processing spindle 3 is preset to perform the rough machining task, and the other processing spindle 3 is preset to perform the finish machining task. An operator places a batch of workpieces on one of the work tables 4 and transfers the workpieces to the rough machining station 31 for rough machining, the workpieces after rough machining are transferred to the finish machining station 32 from the work tables 4 for finish machining without detaching and re-clamping, the operator can re-clamp another workpiece on the other work table 4 in the finish machining process of the previous workpiece, and the other work table 4 transfers the corresponding workpiece to the rough machining station 31 for rough machining. Rough machining and finish machining are carried out alternately in sequence, batch workpieces do not need to wait for all rough machining to be finished and then finish machining is carried out in sequence, waiting time of the batch workpieces among different procedures is shortened, and machining efficiency of the batch workpieces is improved. Meanwhile, an operator can flexibly drive the workbench 4 to slide and adjust the workpiece clamping position, the operations such as moving and clamping of different workpieces on the same lathe bed 1 are more convenient and fast to operate among a plurality of devices, and the occupied area cost for using the devices and the time spent on transferring the workpieces are reduced.

Referring to fig. 1 and 3, the gantry 2 includes a beam 20 and columns 21 supported at both ends of the beam 20. The cross beam 20 is connected with the upright post 21 through a bolt, in other embodiments, the cross beam 20 can also be welded with the upright post 21, integrally formed and the like, and any mode capable of realizing relative fixing of the cross beam and the upright post can be adopted.

The lathe bed 1 adopts an integrated manufacturing mode, and is convenient to transport and mount in an integral falling position. At least two linear guide rails one 5 are arranged on the lathe bed 1 in parallel, in the embodiment, four linear guide rails one 5 are arranged, and each two linear guide rails one 5 are correspondingly arranged below one upright post 21. In other embodiments, a single linear guide rail 5 or three or more linear guide rails 5 may be disposed below each upright 21. The bottom end of the upright post 21 is provided with a sliding plate 211, and the sliding plate 211 is connected with the linear guide rail I5 in a sliding manner through a sliding block.

Referring to fig. 3 and 4, the top surface of the bed 1 is provided with two transmission racks 50, and the transmission racks 50 extend along the length direction of the bed 1. Two transmission racks 50 correspond to the upright posts 21 at two ends of the same cross beam 20 one by one, and each transmission rack 50 is located between two adjacent linear guide rails one 5. The side wall of the sliding plate 211 is provided with a mounting bracket 27, the mounting bracket 27 is positioned above the transmission rack 50, and the driving member 22 is arranged on the mounting bracket 27. The driving member 22 sequentially comprises a speed reducer 221 and a first driving motor 222 from bottom to top, the first driving motor 222 is in transmission connection with the speed reducer 221, a power output end of the speed reducer 221 is in transmission connection with a transmission gear 23, and the transmission gear 23 is meshed with the transmission rack 50.

In addition, the motor cover 28 is arranged on the top surface of the mounting frame 27 and located on the outer side of the first driving motor 222 in a surrounding mode, and in the workpiece machining process, the motor cover 28 is beneficial to blocking partial sputtering scraps and improving protection of the first driving motor 222.

When the portal frame 2 needs to be driven to move, an operator starts the first driving motor 222 to cooperate with the reducer 221 to drive the transmission gear 23 to rotate, and the transmission gear 23 is meshed with the transmission rack 50 and drives the sliding plate 211, the upright post 21 and the cross beam 20 to slide along the first linear guide rail 5. The transmission gear 23 and the transmission rack 50 have high transmission precision and high transmission speed, and are favorable for matching with the linear guide rail I5 to realize high-speed movement and accurate positioning of the portal frame 2.

In the moving process of the portal frame 2, the transmission rack 50 is meshed with the rotating transmission gear 23, so that the transmission gear 23 bears the reaction force of the transmission rack 50, and at the moment, the sliding plate 211 is guided by the linear guide rail I5 in a limiting manner on the two sides of the transmission rack 50, so that the mechanical vibration generated in the moving process of the sliding plate 211 is reduced, and the sliding connection stability of the portal frame 2 is improved.

Referring to fig. 4, correspondingly, a lubricating gear 24 is rotatably arranged on one side of each mounting bracket 27, which is far away from the sliding plate 211, and the lubricating gear 24 synchronously engages with the transmission rack 50. An operator sprays lubricating oil to the lubricating gear 24 in advance, the transmission gear 23 is meshed and driven along the transmission rack 50 in the moving process of the sliding plate 211, meanwhile, the lubricating gear 24 is meshed with the transmission rack 50 and lubricates teeth of the transmission rack 50, abrasion in the meshing and driving process of the transmission rack 50 and the transmission gear 23 is reduced, and the service lives of the transmission rack 50 and the transmission gear 23 are prolonged.

Referring to fig. 1, in the present embodiment, the processing spindle 3 can perform three-axis processing, that is, the processing spindle 3 can move along the length direction of the bed 1 along with the beam 20, move along the axis of the beam 20, and perform longitudinal feed motion. A machining cradle 40 is additionally arranged on one of the working tables 4, and after the machining cradle 40 clamps a workpiece, the workpiece can be driven to swing randomly, so that five-axis machining is completed by matching with the machining main shaft 3, and the overall machining capacity of the machining main shaft 3 and the equipment is improved.

Referring to fig. 1 and 2, crash pads 10 are respectively disposed at four corners of the top surface of the bed 1, the crash pads 10 face the side walls of the pillars 21, and crash blocks 25 matched with the crash pads 10 are disposed on the side walls of the pillars 21 facing the crash pads 10.

Meanwhile, travel switch stop blocks 11 are arranged at two ends of the first linear guide rail 5 on the lathe bed 1, and a travel switch 26 is arranged on the side wall of the upright post 21 facing the travel switch stop block 11 at the corresponding end; when the travel switch stop 11 triggers the corresponding travel switch 26, a distance exists between the bumper block 25 on the same side and the opposite bumper pad 10.

In the sliding process of the portal frame 2 along the linear guide rail I5, the anti-collision block 25 is matched with the anti-collision pad 10, so that the moving range of the portal frame 2 is limited, and the possibility that the portal frame 2 collides with two ends of the bed body 1 rigidly is reduced. Meanwhile, before the anti-collision block 25 contacts with the opposite anti-collision pad 10, the travel switch stop block 11 triggers the travel switch 26, so that the portal frame 2 is stopped quickly, the sliding range of the portal frame 2 is limited, and the collision between the portal frame 2 and the anti-collision pad 10 is reduced.

Referring to fig. 1 and 5, a first bump damping seat 19 is arranged on the top surface of the machine body 1 between each crash pad 10 and the corresponding travel switch stop 11, and a second bump damping seat 29 is correspondingly arranged on the bottom surface of the anti-collision block 25 opposite to the first bump damping seat 19.

Referring to fig. 5 and 6, the first soft impact damping seat 19 comprises a first soft impact seat 191 fixed on the top surface of the bed 1 and a first damping plate 192 hinged on the top surface of the first soft impact seat 191, the top surface of the first soft impact seat 191 is open, and the hinged end of the first damping plate 192 is positioned on the side, facing the anti-collision block 25, of the first soft impact seat 191. The second soft collision damping seat 29 comprises a second soft collision seat 291 fixed on the bottom surface of the anti-collision block 25 and a second damping plate 292 hinged on the bottom surface of the second soft collision seat 291, the bottom surface of the second soft collision seat 291 is open, and the hinged end of the second damping plate 292 is located on one side of the second soft collision seat 291, which faces the first soft collision seat 191.

Referring to fig. 6 and 7, a first buffer spring 193 is arranged in the first bump stop 191, one end of the first buffer spring 193 is fixedly connected with the inner bottom wall of the first bump stop 191, and the other end of the first buffer spring 193 is fixedly connected with the bottom surface of the first damping plate 192. The first buffer spring 193 elastically pushes the plate surface of the first damping plate 192 to incline towards the anti-collision block 25, so that a wedge-shaped stopping surface is formed; a second buffer spring 293 is arranged in the second buffer collision seat 291, one end of the second buffer spring 293 is fixedly connected with the inner top wall of the second buffer collision seat 291, and the other end of the second buffer spring 293 is fixedly connected with the top surface of the second damping plate 292. The second buffer spring 293 elastically pushes the plate surface of the second damping plate 292 to incline towards the first damping plate 192, so that a wedge-shaped friction resistance surface matched with the first damping plate 192 is formed.

The first damping plate 192 is provided with a plurality of first tips 1921 corresponding to the plate surface of the second damping plate 292, and the plurality of first tips 1921 and the first damping plate 192 are integrally formed and are in a step shape. The structure of the second damping plate 292 is the same as that of the first damping plate 192, and meanwhile, a plurality of second toothed ribs 2921 are integrally formed on the surface of the second damping plate 292, which is opposite to the first damping plate 192.

And a plurality of auxiliary compression springs (195) are arranged on one side of the first bump cushioning seat (191) far away from the hinged end of the first damping plate (192), one end of each auxiliary compression spring (195) is fixedly connected with the bottom surface of the first damping plate (192), and the other end of each auxiliary compression spring is fixedly connected with the inner bottom wall of the first bump cushioning seat (191). Meanwhile, a plurality of auxiliary pressure springs 294 are arranged on one side, far away from the hinged end of the second damping plate 292, in the second bump retarding seat 291, one end of each auxiliary pressure spring 294 is fixedly connected with the top surface of the second damping plate 292, and the other end of each auxiliary pressure spring 294 is fixedly connected with the inner top wall of the second bump retarding seat 291.

When the travel switch 26 is in failure, namely the travel switch stop 11 touches the travel switch 26 and does not stop the portal frame 2, before the anti-collision block 25 collides with the anti-collision pad 10, the first damping plate 192 and the second damping plate 292 are in contact friction with each other and press the first buffer spring 193 and the second buffer spring 293, and along with the relative movement of the first damping plate 192 and the second damping plate 292, the number of the first tooth edges 1921 and the second tooth edges 2921 in meshing contact is increased continuously, so that the friction resistance of the first damping plate 192 and the second damping plate 292 is increased. The first buffer spring 193 and the second buffer spring 293 have elastic reverse thrust to gradually enhance the effect of stopping the gantry 2, and reduce the risk that the gantry 2 rigidly impacts the end part of the lathe bed 1.

The first auxiliary compression spring 195 and the second auxiliary compression spring 294 assist the first buffer spring 193 and the second buffer spring 293 to increase elastic reverse thrust in the relative friction extrusion process of the first damping plate 192 and the second damping plate 292, and meanwhile, in the process that the first damping plate 192 and the second damping plate 292 rotate oppositely, acting forces for bending the first auxiliary compression spring 195 and the second auxiliary compression spring 294 need to be additionally applied, so that the effect that the first damping plate 192 and the second damping plate 292 relatively stop the portal frame 2 is further enhanced.

Referring to fig. 6 and 7, the first damping plate 192 is provided with a first yielding groove 1922 facing the second damping plate 292, the first yielding groove extends along the length direction of the first damping plate 192, and the second damping plate 292 is provided with a second yielding groove 2922 corresponding to the first yielding groove 1922. The side wall of one side of the first bump cushioning seat 191 facing the second bump cushioning seat 291 is provided with two hinged seats 1941, in the embodiment, the two hinged seats 1941 are sequentially arranged along the width direction of the yielding groove, and in other embodiments, the number of the hinged seats 1941 can be flexibly increased or decreased according to the width of the yielding groove 1922. The hinged support 1941 is hinged with the limit tension spring 194, the torsional spring 1942 is arranged in the hinged support 1941, the torsional spring 1942 keeps the limit tension spring 194 vertically arranged under the action of no external force, and at the moment, a spring hook at one end of the limit tension spring 194 far away from the hinged support 1941 extends into the abdicating groove I1922. And a hook ring 295 is fixed on the end face of one side of the second bump cushioning seat 291, which faces the first bump cushioning seat 191, and the hook ring 295 extends into the first yielding groove 1922.

When the first damping plate 192 and the second damping plate 292 move relatively, the shackle 295 is guided into the first abdicating groove 1922 and hooks of the two limit tension springs 194 are hooked, and the shackle 295 stretches the limit tension springs 194 to enable the limit tension springs 194 to react with the first bump easing seat 191 and the second bump easing seat 291, so that a blocking effect on the relative movement of the first bump easing seat 191 and the second bump easing seat 291 is formed. Meanwhile, when the first damping plate 192 and the second damping plate 292 are relatively extruded and rotate back to back, the acting force of the bending limit tension spring 194 needs to be additionally applied, so that the effect of the first damping plate 192 and the second damping plate 292 in cooperation with the stop gantry 2 is further enhanced, and the risk that the gantry 2 rigidly impacts the end part of the lathe bed 1 is reduced.

Referring to fig. 8, a pair of linear guide rails two 6 is respectively arranged on the top surface of the bed body 1 corresponding to each workbench 4, each pair of linear guide rails two 6 is sequentially arranged along the width direction of the corresponding workbench 4, and the bottom surface of the workbench 4 is connected with the linear guide rails two 6 in a sliding manner through a sliding block. The driving assembly is arranged between each pair of linear guide rails II 6, the driving assembly is arranged to be a lead screw motor set 60 in the embodiment, the lead screw motor set 60 comprises a lead screw 601 erected along the length direction of the machine body 1 and a driving motor II 602 arranged at one end of the lead screw 601, and the output end of the driving motor II 602 is coaxially and fixedly connected with the end part of the lead screw 601. A nut seat 41 is fixed to the bottom surface of the table 4, and the nut seat 41 is screwed to the lead screw 601. An operator starts the second driving motor 602 to drive the screw rod 601 to rotate, so as to drive the nut seat 41 and the workbench 4 to slide along the second linear guide rail 6. The screw motor group 60 has high transmission precision, and the linear guide rails 6 which are arranged in pairs are matched to be favorable for quickly positioning the moving position of the workbench 4.

Referring to fig. 1, auxiliary guide rails 16 are connected to two ends of the bed body 1, which are located on the second linear guide rails 6, an organ cover 15 is arranged at each end of each pair of second linear guide rails 6, and the organ covers 15 are installed on two adjacent auxiliary guide rails 16. Two ends of the sliding direction of the workbench 4 are in one-to-one correspondence with and connected with the two organ covers 15. And in the moving process of the workbench 4, the two organ covers 15 are pulled to stretch and retract and are kept covered on the pair of linear guide rails II 6, the screw rod 601 and the driving motor II 602. The organ cover 15 is beneficial to reducing the flying accumulation of processing scraps on the linear guide rail II 6, the screw rod 601 and the driving motor II 602, and improving the protection of the linear guide rail II 6 and the screw rod motor set 60.

Referring to fig. 2 and 9, chip falling grooves 12 are respectively preset on the top surface of the bed 1 between two opposite sides of the two work tables 4 and between the two work tables 4, and the chip falling grooves 12 extend along the length direction of the bed 1. One end of the lathe bed 1 in the length direction is provided with a chip removal port 14 communicated with a chip groove 12, a conveying auger 13 is rotatably arranged in the chip groove 12, and the axis of the conveying auger 13 is parallel to the length direction of the lathe bed 1. The side wall of the lathe bed 1, which is positioned at the opening end of the chip removal port 14, is connected with an installation cylinder 17, the installation cylinder 17 is communicated with the chip removal port 14 and the chip falling groove 12, one end of the conveying auger 13 is rotatably connected with the side wall of the groove of the chip falling groove 12, which is far away from the chip removal port 14, the other end of the conveying auger extends into the installation cylinder 17, the cylinder wall of the installation cylinder 17, which faces to the lower part, is provided with a discharge port 171, the end wall of the installation cylinder 17, which is far away from the lathe bed 1, is provided with a chip removal motor 18, and the output end of the chip removal motor 18 is fixedly connected with the end part of the conveying auger 13 in the same axis.

In the process of clamping a workpiece and machining the workpiece by the workbench 4, the three chip falling grooves 12 are used for collecting falling scraps, and an operator starts the chip discharging motor 18 to drive the conveying auger 13 to rotate and convey the scraps accumulated in the chip falling grooves 12, so that the scraps are led out of the chip discharging port 14 and the discharging port 171.

The chip ejector 8 is provided outside the bed 1 below the mounting tube 17, and the chip ejector 8 may be a chain scraper conveyor, but any device capable of receiving and discharging chips from the discharge port 171 and conveying them may be used. The lifter 80 is arranged at one end of the chip cleaner 8 far away from the mounting cylinder 17 in a matching manner, so that subsequent operators can lift and pack the output waste chips conveniently.

Referring to fig. 1, the top surface of the bed 1 is provided with a detection frame 7, and the detection frame 7 is arranged at one end of the bed 1 facing the chip cleaner 8. In this embodiment, the detection frame 7 is of a gantry frame structure, the detection robot 70 is hung at the top of the detection frame 7, the detection robot 70 adopts a multi-axis 3D vision detection robot 70, the workpiece machining precision is detected in real time by scanning a workpiece, the machining information can be fed back timely, an operator can be prompted to correct and switch machining instructions timely, and the workpiece machining efficiency is improved.

The implementation principle of a numerical control gantry integrated machining center in the embodiment of the application is as follows: the two portal frames 2 and the machining main shafts 3 thereof are matched with the two working tables 4 to be capable of simultaneously distributing and carrying out finish machining and rough machining tasks, batch workpieces are placed on one working table 4 and are transferred to the rough machining station 31 to be roughly machined, the workpieces after rough machining can be transferred to the finish machining station 32 from the working tables 4 to be finely machined without being dismounted and repositioned, and an operator can clamp another workpiece again to carry out rough machining on the adjacent working table 4 in the finish machining process of the previous workpiece. The rough machining and the finish machining are sequentially and alternately carried out, and the batch workpieces are sequentially and finely machined without waiting for the completion of the rough machining, so that the waiting time of the batch workpieces among different procedures is reduced, and the machining efficiency of the batch workpieces is improved;

the machining main shaft 3 for three-axis machining is matched with the machining cradle 40 additionally arranged on the workbench 4 to form a five-axis machining mechanism, so that the machining requirements of different workpieces are met, and the overall machining capacity is improved;

in the machining process, the detection robot 70 additionally arranged on the detection frame 7 detects the machining precision of the workpiece on line in real time, so that the workpiece with the unqualified precision can be corrected in time, the machining efficiency of the workpiece is further improved, and the rework rate and the defective rate of the workpiece in the later period are reduced;

the screw motor group 60 and the linear guide rail II 6 are matched to flexibly drive the workbench 4 to slide and adjust the clamping position of the workpiece, so that the operations of moving different workpieces, clamping for multiple times and the like on the lathe bed 1 are more convenient and fast compared with the operations among multiple devices, and the floor space cost for using multiple devices and the time spent on transferring the workpieces are reduced;

each conveying auger 13 is matched with the chip cleaner 8 and the elevator 80 in the process of processing the workpiece, so that the processing scraps can be discharged in time, and the workload of cleaning the scraps by operators is reduced.

The embodiment of the application further discloses a machining method of the numerical control gantry integrated machining center.

The machining method of the numerical control gantry integrated machining center comprises the following steps of:

step one, clamping one of the workpieces on one of the work tables 4, transferring the workpiece to a rough machining station 31 by driving one of the work tables 4, and then driving one of the machining spindles 3 to rough machine the workpiece;

and step two, after rough machining of the workpiece is completed, driving the corresponding workbench 4 to move the rough machined workpiece to a finish machining station 32, then driving the other machining spindle 3 to finish the workpiece, meanwhile, moving the rough machined workpiece to the finish machining station 32 to perform finish machining, clamping the workpiece to be rough machined on the workbench 4 on one adjacent side and transferring the workpiece to the rough machining station 31, and driving the corresponding machining spindle 3 to move transversely and synchronously perform rough machining.

The workpiece after rough machining can be moved and positioned to the finish machining station 32 along with the workbench 4 without being disassembled, the workbench 4 can return to the rough machining station 31 again to replace the workpiece to be rough machined after finish machining is finished, and the workbenches 4 on two sides can alternately move to realize non-stop rough machining and finish machining.

The embodiments of the present invention are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (6)

1. The utility model provides a numerical control longmen integral type machining center which characterized in that: the device comprises a lathe bed (1), wherein at least two portal frames (2) are arranged on the lathe bed (1), and a processing spindle (3) is arranged on each portal frame (2);

the machining end of at least one machining spindle (3) on the lathe bed (1) is set as a rough machining station (31), and the machining end of at least one machining spindle (3) is set as a finish machining station (32);

the lathe bed (1) is provided with a movable clamping device which is used for clamping a workpiece and conveying the workpiece to the finish machining station (32) or the rough machining station (31);

the gantry (2) is arranged on the lathe bed (1) in a sliding mode, a transmission rack (50) is arranged on the lathe bed (1), the extending direction of the transmission rack (50) is parallel to the sliding direction of the gantry (2), a driving piece (22) is arranged on the gantry (2), the output end of the driving piece (22) is connected with a transmission gear (23) in a transmission mode, and the transmission gear (23) is meshed with the transmission rack (50);

a lubricating gear (24) is rotatably arranged on the portal frame (2), and the lubricating gear (24) is meshed with the transmission rack (50);

anti-collision pads (10) are arranged at two ends of the lathe bed (1) in the sliding direction of the portal frame (2), and anti-collision blocks (25) are arranged on the portal frame (2) towards the anti-collision pads (10);

travel switch stop blocks (11) are arranged at two ends of the lathe bed (1) in the sliding direction of the portal frame (2), and a travel switch (26) for triggering the travel switch stop blocks (11) and stopping the portal frame (2) is arranged on the portal frame (2);

when the travel switch stop block (11) triggers the corresponding travel switch (26), a distance exists between the anti-collision block (25) on the same side and the corresponding anti-collision pad (10);

a first buffer damping seat (19) is arranged on one side, facing the anti-collision block (25), of the anti-collision pad (10) on the lathe bed (1), and a second buffer damping seat (29) is arranged on the anti-collision block (25);

when the travel switch stop block (11) touches the travel switch (26) and the portal frame (2) is not stopped, the second bump damping seat (29) is matched with the first bump damping seat (19) to stop the portal frame (2);

the first bump retarding damping seat (19) comprises a first bump retarding seat (191) arranged on the machine body (1) and a first damping plate (192) hinged with the first bump retarding seat (191), a first buffer spring (193) is arranged in the first bump retarding seat (191), and the first buffer spring (193) elastically pushes the plate surface of the first damping plate (192) to face one side of the anti-collision block (25);

the second bump buffering damping seat (29) comprises a second bump buffering seat (291) arranged on the anti-collision block (25) and a second damping plate (292) hinged with the second bump buffering seat (291), a second buffering spring (293) is arranged in the second bump buffering seat (291), and the second buffering spring (293) elastically pushes the plate surface of the second damping plate (292) to face the first damping plate (192);

before the anti-collision block (25) collides with the anti-collision pad (10), the first damping plate (192) and the second damping plate (292) rub against each other and press the first buffer spring (193) and the second buffer spring (293).

2. The numerical control gantry integrated machining center according to claim 1, characterized in that: the movable clamping device comprises a workbench (4) which slides between the finish machining station (32) and the rough machining station (31), wherein the workbench (4) is provided with at least two, and the lathe bed (1) is provided with a driving assembly for driving the workbench (4) to slide.

3. The numerical control gantry integrated machining center according to claim 1, characterized in that: and a detection frame (7) is arranged on one side of the lathe bed (1), and a detection robot (70) for detecting the machining precision of the workpiece on the movable clamping device is arranged on the detection frame (7).

4. A machining method using the numerical control gantry integrated machining center according to any one of claims 1 to 3, characterized in that: the method comprises the following steps:

firstly, clamping one of the workpieces on a rough machining station (31), and then driving one of the machining main shafts (3) to rough machine the workpiece;

and step two, moving the workpiece after rough machining to a finish machining station (32), and then driving another machining main shaft (3) to finish the workpiece.

5. The machining method of the numerical control gantry integrated machining center according to claim 4, characterized in that: and the rough machined workpiece is moved to a finish machining station (32) for finish machining, and another workpiece is clamped on the rough machining station (31) for synchronous rough machining.

6. The machining method of the numerical control gantry integrated machining center according to claim 4, characterized in that: the workpiece is switched between a rough machining station (31) and a finish machining station (32) by moving the clamping device.

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