CN111468959A

CN111468959A - Durable five-axis precise small gantry numerical control machining center

Info

Publication number: CN111468959A
Application number: CN202010408086.7A
Authority: CN
Inventors: 李爱军; 孟祥东; 殷正斌; 刘国锦; 杨宗生
Original assignee: Foshan Pratic CNC Science and Technology Co Ltd
Current assignee: Foshan Pratic CNC Science and Technology Co Ltd
Priority date: 2020-05-14
Filing date: 2020-05-14
Publication date: 2020-07-31

Abstract

The invention discloses a durable five-axis precise small gantry numerical control machining center which comprises a machine base, a machining table, a supporting wall and a three-axis sliding seat, wherein the machining table is arranged on the machine base; the support walls are arranged on two opposite sides of the processing table, and the two support walls on the two sides of the processing table extend in parallel; the triaxial slide is used for driving numerical control machining center's processing head motion, the triaxial slide includes crossbeam, x axle slide and driving motor, the both ends of crossbeam extending direction are through two x axle slide slidable mounting is in two knee wall, and at least two driving motor drives simultaneously is same the x axle slide. The five-axis precise small gantry numerical control machining center has the advantages of long service life and high workpiece machining precision.

Description

Durable five-axis precise small gantry numerical control machining center

Technical Field

The invention relates to the technical field of numerical control machining, in particular to a durable five-axis precise small gantry numerical control machining center.

Background

The gantry machining center, also called a numerical control vertical machine tool, is characterized in that a machining main shaft is perpendicular to a workbench, the whole structure is a gantry frame, the gantry frame is composed of double upright columns and a cross beam, and the gantry machining center is suitable for machining large-sized workpieces and workpieces with complex shapes.

The double-column of the current gantry machining center can be slidably mounted on the machine base and can slide along the x-axis direction. The beam is erected between the two columns, and the processing head is slidably mounted on the beam and can slide along the y-axis direction and the z-axis direction. The Y-axis direction is the extending direction of the cross beam, the Z-axis direction is the vertical direction, the cross beam is erected on the double columns, and a certain height is provided for the machining head to move along the Z-axis direction. According to the gantry machining center, when the machining head is driven to move along the x-axis direction, the driving motor in the x-axis direction needs to drive the double columns, the cross beam, the machining head and other components to move at the same time, due to the fact that the weight of the double columns is large, the driving motor in the x-axis direction needs to have a large driving force, the driving requirement on the driving motor is high, meanwhile, the machining head also moves along the x-axis direction, the response time is long (starting and stopping), the movement precision is low, and the machining precision of a workpiece is affected.

Disclosure of Invention

The invention mainly aims to provide a durable five-axis precise small gantry numerical control machining center, and aims to solve the technical problem that the machining precision of the existing gantry machining center is low.

In order to achieve the purpose, the durable five-axis precise small gantry numerical control machining center provided by the invention comprises

A machine base;

the processing table is arranged on the machine base;

the support walls are arranged on two opposite sides of the processing table, and the two support walls on the two sides of the processing table extend in parallel; and

the triaxial slide is used for driving the processing head motion of numerical control machining center, the triaxial slide includes crossbeam, x axle slide and driving motor, the both ends of crossbeam extending direction are through two x axle slide slidable mounting is in two knee wall, and at least two driving motor drives simultaneously is same the x axle slide.

Optionally, the top of supporting wall is equipped with first slide rail and rack, the rack with first slide rail syntropy extends, x axle slide slidable mounting in first slide rail, driving motor install in x axle slide to through the drive with rack toothing's gear revolve, in order to drive x axle slide slides.

Optionally, the x axle slide includes crossbeam installation department and motor installation department, the crossbeam install in the crossbeam installation department, the motor installation department is followed the slip direction of x axle slide is located respectively crossbeam installation department both sides, driving motor install in the motor installation department.

Optionally, the beam mounting part and the motor mounting part constitute a trapezoidal structure.

Optionally, the x-axis slide further comprises a beam support portion, the beam support portion is disposed on the beam mounting portion and extends from the beam mounting portion to the center of the beam, and the beam support portion is supported at the bottom of the beam.

Optionally, the numerical control machining center further includes a grating ruler, and the grating ruler is arranged on the support wall and used for positioning the position of the driving motor.

Optionally, the support wall is hollow.

Optionally, the support wall includes a wall body and support pillars, the wall body encloses to form a weight reduction cavity, and the support pillars are disposed in the weight reduction cavity and extend in an up-down direction to support the wall body.

Optionally, the numerical control machining center still includes blade holder and protective component, the blade holder is located the frame, just the blade holder with the processing platform is in the frame interval sets up, protective component includes the guard gate, guard gate movable mounting in the processing platform with between the blade holder, the guard gate has the interception processing platform department to the separation position of the processing sweeps that the blade holder spattered and processing waste water, and by the blade holder with the non-separation position of moving back from between the processing platform.

Optionally, the protection assembly further comprises a partition plate, the partition plate is arranged on the base and divides the machining table and the tool apron, the partition plate is provided with a tool changing window, the tool changing window corresponds to the tool apron, and the protection door is movably arranged on the partition plate and used for opening or closing the tool changing window.

According to the technical scheme, two support walls extending in parallel are arranged on two opposite sides of a processing table, then a cross beam is slidably mounted on the two support walls through two x-axis sliding seats, and meanwhile, the same x-axis sliding seat is driven by at least two driving motors. So, through the height of knee wall, can provide the degree of depth of following vertical direction motion for the processing head, and the extension length of knee wall can provide the distance of following the motion of x axle direction for the processing head, and like this, the knee wall has just replaced the stand to make the driving motor of x axle direction when the drive processing head, need not to drive double-column again, alleviateed driving motor's driving pressure. Meanwhile, the scheme that at least two driving motors drive the x-axis sliding seat at one end of the beam replaces the original scheme that one driving motor drives one x-axis sliding seat, and the pressure of a single driving motor is reduced. Therefore, the X-axis sliding seat can be quickly started and braked, the movement precision of the X-axis sliding seat is improved, the stress of the transmission mechanism can be reduced, the abrasion of the driving motor and the transmission mechanism is reduced, and the service life of the driving motor transmission mechanism is prolonged. It is thus clear that compare with current longmen machining center, the longmen processing central line of this application has long service life, the high advantage of work piece machining precision.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a durable five-axis precise gantry numerical control machining center according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of another perspective view of the embodiment shown in FIG. 1;

FIG. 3 is a schematic diagram illustrating a further perspective view of the embodiment shown in FIG. 1;

FIG. 4 is a schematic structural diagram of a three-axis carriage in the embodiment shown in FIG. 1;

FIG. 5 is a top view of the tri-axial slide of the embodiment of FIG. 1;

FIG. 6 is a schematic structural view of the x-axis carriage in the embodiment of FIG. 1;

FIG. 7 is a schematic view of the embodiment of FIG. 1 from another perspective;

FIG. 8 is a schematic structural view of the support wall in the embodiment of FIG. 1;

FIG. 9 is a cross-sectional view of the support wall of the embodiment of FIG. 1;

FIG. 10 is a further cross-sectional view of the support wall of the embodiment of FIG. 1;

FIG. 11 is a schematic diagram of a portion of the embodiment shown in FIG. 1;

FIG. 12 is a schematic structural view of a shield assembly of the embodiment of FIG. 1;

FIG. 13 is a schematic view of the structure of the baffle plate in the embodiment shown in FIG. 1;

FIG. 14 is a schematic structural diagram of the protection door in the embodiment shown in FIG. 1.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				1	Engine base	2	Processing table
3	Support wall	31	Wall body
				311	First reinforcing rib	32	Weight reduction cavity
33	Support column	331	First supporting plate
				332	Second support plate	333	Connecting plate
34	First slide rail	341	Track
				35	Rack bar	36	Grating ruler
37	Chip blocking plate	4	Three-shaft sliding seat
				41	X-axis sliding seat	411	Cross beam mounting part
412	Motor mounting part	413	Cross beam supporting part
				42	Cross beam	43	Driving motor
44	Y-axis sliding seat	45	Z-axis sliding seat
				5	Machining head	6	Tool apron
7	Protective assembly	71	Protective door
				711	Door panel	712	Abutting edge
713	Enclosure frame	72	Partition board
				721	Tool changing window	73	First driving member
74	Second slide rail	75	Second reinforcing rib
				8	Second driving member	9	Sliding seat

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is 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 at least one such feature. In addition, the meaning of "and/or" appearing throughout is to include three juxtapositions, exemplified by "A and/or B" including either scheme A, or scheme B, or a scheme in which both A and B are satisfied. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The invention provides a durable five-axis precise small gantry numerical control machining center.

In the embodiment of the invention, as shown in fig. 1 to 5, the durable five-axis precision small gantry numerical control machining center comprises a machine base 1, a machining table 2, a support wall 3 and a three-axis slide seat 4. Wherein, the processing platform 2 is arranged on the machine base 1 and used for fixing the workpiece, and a processing head 5 of the numerical control processing center processes the workpiece on the processing platform 2. The support walls 3 are provided on opposite sides of the processing table 2, and the support walls 3 on both sides of the processing table 2 extend in parallel. The three-axis slide 4 is used for driving a processing head 5 of the numerical control processing center to move, and the three-axis slide 4 comprises a cross beam 42, an x-axis slide 41 and a driving motor 43. Specifically, both ends of the beam 42 in the extending direction are slidably mounted on the two support walls 3 by the two x-axis sliders 41, and at least two driving motors 43 simultaneously drive the same x-axis slider 41.

It can be understood that when the current gantry machining center drives the machining head to move along the x-axis direction, the driving motor in the x-axis direction needs to drive the double columns, the cross beam, the machining head and other components to move simultaneously. Because the weight of the double-column is huge, the driving motor in the x-axis direction needs a great driving force, the specification requirement on the driving motor in the x-axis direction is increased, the movement of the machining head in the x-axis direction is caused, the response time is long (slow to start and stop), the movement precision is low, the machining precision of a workpiece is influenced, the abrasion of the driving motor and the transmission mechanism is serious due to the heavy weight of the double-column, and the service lives of the driving motor and the transmission mechanism are shortened. Aiming at the technical problem, the durable five-axis precise small gantry numerical control machining center is provided with two support walls 3 extending in parallel on two opposite sides of a machining table 2, then a cross beam 42 is slidably mounted on the two support walls 3 through two x-axis sliding seats 41, and meanwhile, the same x-axis sliding seat 41 is driven simultaneously through at least two driving motors 43. So, through the height of knee wall 3, can provide the degree of depth along vertical direction motion for processing head 5, and knee wall 3's extension length can provide the distance along the motion of x axle direction for processing head 5, and like this, knee wall 3 has just replaced the stand to make the driving motor 43 of x axle direction when drive processing head 5, need not to drive the double-column again, alleviateed driving pressure of driving motor 43. Meanwhile, the scheme that at least two driving motors 43 drive the x-axis sliding seat 41 at one end of the beam 42 replaces the original scheme that one driving motor drives one x-axis sliding seat, and the pressure of a single driving motor 43 is reduced. Therefore, the quick starting and braking of the x-axis sliding seat 41 can be realized, the movement precision of the x-axis sliding seat 41 is improved, the stress of the transmission mechanism can be reduced, the abrasion of the driving motor 43 and the transmission mechanism is reduced, and the service life of the transmission mechanism of the driving motor 43 is prolonged. It is thus clear that compare with current longmen machining center, the longmen processing central line of this application has long service life, the high advantage of work piece machining precision.

It should be noted that, in general, a three-axis cnc machine moves a machining head in an x, y, z three-axis coordinate system, where a z axis generally represents a vertical direction, and an x axis and a y axis respectively represent two intersecting directions in a horizontal plane. The x-axis direction described in this embodiment is not limited to a specific direction, but refers to any direction of the horizontal plane. Meanwhile, the name of 'x-axis direction' does not limit the movement direction of the processing head, and actually, the support wall 3 can replace an upright post moving along the y-axis direction.

Preferably, in the present embodiment, each x-axis slide 41 is driven to slide by two driving motors 43 at the same time. It should be noted that each driving motor 43 of the five-axis precision small gantry machining center is connected to a control system of the five-axis precision small gantry machining center, and the control system can control the start and stop of each driving motor 43, so as to ensure the synchronous operation of the 4 driving motors 43 driving the two x-axis slide bases 41.

In particular, the three-axis slide 4 further comprises a y-axis slide 44 and a z-axis slide 45, wherein the y-axis slide 44 is slidably mounted to the cross beam 42, the z-axis slide 45 is slidably mounted to the y-axis slide 44, and the processing head 5 is mounted to the z-axis slide 45. Defining the extending direction of the support wall 3 as the x-axis direction, the extending direction of the beam 42 as the y-axis direction, and the up-down direction (also vertical direction) as the z-axis direction, the x-axis slide 41 can move along the x-axis direction, the y-axis slide 44 can move along the y-axis direction, and the z-axis slide 45 can move along the z-axis direction. In this embodiment, the y-axis slide 44 and the z-axis slide 45 are driven by a lead screw slider mechanism driven by a motor.

Referring to fig. 6 and 7, the x-axis slide 41 includes a beam mounting portion 411 and a motor mounting portion 412, wherein the beam 42 is mounted on the beam mounting portion 411, the motor mounting portion 412 is respectively disposed on two sides of the beam mounting portion 411 along the sliding direction of the x-axis slide 41, and the driving motor 43 is mounted on the motor mounting portion 412. It can be understood that the motor mounting portions 412 are arranged on two sides of the beam mounting portion 411, so that the driving motor 43 and the beam 42 can be reasonably kept away, the structural integrity of the beam mounting portion 411 can be improved, and the supporting strength of the beam mounting portion 411 to the beam 42 can be guaranteed. Of course, in other embodiments of the present application, the motor mounting portion 412 may also be disposed on the same side of the beam mounting portion 411, or disposed on two adjacent sides or peripheral sides of the beam mounting portion 411, which is not limited in this application.

Specifically, in the present embodiment, the beam mounting portion 411 and the motor mounting portion 412 constitute a trapezoidal structure. It is known that the trapezoidal structure is a very stable supporting structure, and the beam mounting portion 411 and the motor mounting portion 412 are matched to form the trapezoidal structure, so that the structural strength of the x-axis sliding base 41 can be effectively improved. Meanwhile, compared with a more stable triangular structure, the trapezoidal structure facilitates the matching installation of the x-axis slide 41, the cross beam 42 and the support wall 3. Of course, the design of the present application is not limited thereto, and in other embodiments of the present application, the motor mounting portion 412 and the beam mounting portion 411 may be disposed in other structures.

Further, the x-axis slide 41 further includes a beam support portion 413, the beam support portion 413 being provided to the beam mounting portion 411 and extending from the beam mounting portion 411 toward the center of the beam 42, the beam mounting portion 411 being supported at the bottom of the beam 42. It can be understood that since the beam 42 spans between the two support walls 3, and the y-axis slide 44, the z-axis slide 45, and the processing head 5 are mounted on the beam 42, the middle of the beam 42 is subjected to a large stress. The beam support part 413 is arranged on the x-axis sliding base 41, so that the support of the x-axis sliding base 41 on the beam 42 can be increased, and the stress resistance of the beam 42 can be improved.

Preferably, in the present embodiment, the beam support 413 has a triangular structure. It is understood that the triangular structure is the most stable structure, and the beam support part 413 is configured to be the triangular structure to maximize the supporting strength of the beam 42. Of course, the design of the present application is not limited thereto, and in other embodiments of the present application, the beam support portion 413 may also be disposed in a square structure, a trapezoid structure, an arc structure, and the like.

Preferably, in the present embodiment, the x-axis sliding base 41 is hollow. With this arrangement, the weight of the x-axis slide 41 can be reduced on the premise of ensuring the structural strength of the x-axis slide 41 itself, so as to reduce the burden on the driving motor 43.

Preferably, in the present embodiment, the cross beam 42 is hollow. With such an arrangement, the weight of the cross beam 42 can be reduced on the premise of ensuring the structural strength of the cross beam 42 itself, so as to reduce the burden on the driving motor 43.

Specifically, in this embodiment, the y-axis slide 44 is driven by a precision nut-rotating lead screw-slider mechanism driven by a motor, which has the performance advantages of high precision, high speed, high load, and reduced heat generation and transmission inertia.

Specifically, in the present embodiment, the z-axis slide 45 is a square ram four-wire rail design, that is, two parallel extending wire rails are respectively disposed on two opposite sides of the y-axis slide 44, and the z-axis slide 45 is slidably mounted on the wire rails. The design can better meet the processing requirements of high precision and high load.

Referring to fig. 8 and 9, in the present embodiment, the top of the support wall 3 is provided with a first slide rail 34 and a rack 35, and the rack 35 and the first slide rail 34 extend in the same direction. The x-axis slide 41 is slidably mounted on the first slide rail 34, and the driving motor 43 is mounted on the x-axis slide 41 and drives the x-axis slide 41 to slide by driving a gear (not shown) engaged with the rack 35 to rotate. It can be understood that the driving motor 43 drives the x-axis slide 41 through the rack-and-pinion mechanism 35, which enables the x-axis slide 41 to obtain a larger driving force and ensure the movement accuracy of the x-axis slide 41.

Preferably, in this embodiment, the slide rail includes two rails 341 extending in parallel, and the x-axis slide 41 is slidably mounted on the rails 341. The sliding rails of the double rails 341 are arranged on the support wall 3 to allow the x-axis sliding base 41 to be installed in a sliding manner, so that the sliding stability of the x-axis sliding base 41 can be improved.

Preferably, in this embodiment, the gear is a helical gear.

Further, in the present embodiment, the top of the support wall 3 is further provided with a grating ruler 36, and the grating ruler 36 is used for positioning the position of the driving motor 43. The relative positions of a plurality of driving motors 43 on the support wall 3 can be positioned through the grating ruler 36, so that the movement precision of the x-axis sliding seat 41 is improved.

Further, in the present embodiment, the support wall 3 is disposed on the base 1, and the support wall 3 is a metal wall. It can be understood that the support wall 3 is arranged on the machine base 1, which is beneficial to improving the integrity of the gantry machining center, and the support wall 3 is arranged as a metal wall, so that the structural strength of the support wall 3 can be improved, the deformation of the support wall 3 is reduced, the loss resistance of the support wall 3 is improved, the motion precision of the machining head 5 is ensured, and the machining precision of the numerical control machining center is ensured. Of course, the design of the present application is not limited thereto, and in other embodiments of the present application, the support wall 3 may be made of stone, wood, concrete, steel concrete, or the like, and the support wall 3 is not limited to be disposed on the base 1.

Alternatively, the support wall 3 may be made of metal such as steel, iron, or the like.

Referring to fig. 9 and 10, in the present embodiment, the support wall 3 is hollow. It can be understood that since the support wall 3 is made of metal, the weight is relatively large while having an extremely high structural strength. Then, the support wall 3 is disposed on the base 1, so that the stability of the base 1 can be improved, but the pressure of the base 1 can be increased, and thus the support wall 3 is hollow, so that the weight of the support wall 3 can be reduced and the pressure of the base 1 can be reduced on the premise of ensuring the structural strength of the support wall 3. Of course, in other embodiments of the present application, the support wall 3 may be a solid structure.

Further, in the present embodiment, the support wall 3 includes a wall body 31 and support columns 33. The wall 31 encloses to form a weight-reducing cavity 32, the support pillar 33 is disposed in the weight-reducing cavity 32, and the support pillar 33 is disposed in the weight-reducing cavity 32 and extends in the up-down direction to support the wall 31. It can be understood that, by arranging the supporting columns 33 in the lightening cavities 32 to support the wall 31, the structural strength of the wall 31 can be increased, so as to improve the supporting strength of the supporting wall 3 on the three-axis sliding seat 4. The supporting column 33 extends in the up-down direction, so that the pressure of the three-axis slide 4 can be better received. It should be noted that in other embodiments of the present application, the supporting column 33 may also extend obliquely or horizontally.

Specifically, the support column 33 includes a first support plate 331 and a second support plate 332, wherein the first support plate 331 and the second support plate 332 each extend in the up-down direction, and the first support plate 331 and the second support plate 332 intersect. With the arrangement, the volume of the supporting column 33 can be properly reduced, and the self weight of the supporting column 33 is reduced while the structural strength of the supporting column 33 is ensured, so that the weight of the supporting wall 3 is reduced.

Preferably, in the present embodiment, the first support plate 331 and the second support plate 332 are perpendicular to each other.

In order to further enhance the structural strength of the support wall 3, in the present embodiment, a plurality of support pillars 33 are spaced in the weight-reducing cavity 32.

Further, the tops and/or bottoms of adjacent support columns 33 are connected by connecting plates 333. It will be appreciated that the top and/or bottom of the support columns 33 are connected together by the connecting plates 333 to further provide the compressive resistance of the overall structure of the support wall 3 and to increase the structural strength of the support wall 3. Also, the connection plates 333 are connected only to the top and/or bottom of the adjacent support columns 33, with less increase in the overall weight of the support wall 3. Preferably, in this embodiment, the connecting plates 333 are connected to the top and bottom of the adjacent supporting columns 33.

Further, in the present embodiment, the support wall 3 further includes a second reinforcing rib 311, and the second reinforcing rib 311 is disposed on the wall 31. Thus, the structural strength of the wall body 31 can be enhanced by the second reinforcing beads 311 to improve the structural strength of the support wall 3. Of course, the design of the present application is not limited thereto, and in some embodiments where the structural strength of the wall 31 is sufficient, the wall 31 may not be provided with the reinforcing ribs.

As shown in fig. 2 and 8, in the present embodiment, the durable five-axis precision mini-gantry nc machining center further includes a chip blocking plate 37, and the chip blocking plate 37 is disposed between the machining table 2 and the support wall 3 and is inclined from the support wall 3 to the machining table 2. It can be understood that the chip blocking plate 37 is arranged between the support wall 3 and the processing table 2, and can guide the processing waste chips and the processing waste water which are sputtered to the support wall 3 to the processing table 2, so as to prevent the bottom of the wall of the support wall 3 from accumulating the processing waste chips, and facilitate the collection of the processing waste chips and the cleaning of the processing table 2. Of course, since the chip blocking plate 37 forms a triangular structure with the support wall 3 and the processing table 2, the chip blocking plate 37 can also support the support wall 3 to a certain extent.

Further, as shown in fig. 11 and 12, the durable five-axis precision mini-gantry numerical control machining center further includes a tool apron 6 and a protection assembly 7. Wherein, the tool apron 6 is also arranged on the machine base 1 for placing the tool, and the tool apron 6 and the processing platform 2 are arranged at intervals on the machine base 1. The guard assembly 7 comprises a guard door 71, the guard door 71 is movably arranged between the processing table 2 and the tool apron 6, the guard door 71 has a blocking position for blocking the scraps and waste water splashed to the tool apron 6 by the processing table 2, and a non-blocking position retreated from between the tool apron 6 and the processing table 2.

It can be understood that the durable five-axis precise small gantry numerical control machining center of the application is provided with the protective door 71 through the movable arrangement between the machining table 2 and the tool apron 6, and the protective door 71 is arranged to be at a blocking position for blocking machining scraps and machining wastewater sputtered from the machining table 2 to the tool apron 6, so that the protective door 71 can be moved to the blocking position when the durable five-axis precise small gantry numerical control machining center carries out machining of a workpiece, and the purpose of protecting the tool apron 6 is achieved by blocking the machining scraps and the machining wastewater. It can be seen that, compare with current longmen machining center, the five accurate little longmen numerical control machining centers of durable type of this application still have the advantage of protection blade holder 6.

Meanwhile, since the protective door 71 also has a non-blocking position where it is retracted from between the tool post 6 and the machining table 2, that is, in this position, the space where the machining table 2 is located communicates with the space where the tool post 6 is located, it is convenient for the worker to perform operations such as maintenance of the machining head 5. Correspondingly, a machining head 5 of the durable five-axis precise small gantry numerical control machining center can also move from the machining table 2 to a tool apron 6 for replacing the tool.

Preferably, in the present embodiment, the protection door 71 is configured to move to the non-blocking position for the machining head 5 of the durable five-axis precision mini-gantry nc machining center to replace the tool in the tool seat 6. Therefore, the tool holder 6 is protected, the tool is convenient to replace, the workpiece is convenient to machine, and the automation efficiency of the durable five-axis precise small gantry numerical control machining center is higher.

As shown in fig. 11 to 13, in the present embodiment, the protection assembly 7 further includes a partition plate 72, and the partition plate 72 is disposed on the machine base 1 and partitions the machining table 2 and the tool apron 6. The partition 72 has a tool changing window 721, the tool changing window 721 is disposed corresponding to the tool holder 6, and the protective door 71 is movably disposed on the partition 72 for opening or closing the tool changing window 721.

It will be appreciated that the machining zone and the magazine zone can be separated on the machine base 1 by providing a partition 72 on the machine base 1 to separate the machining table 2 from the tool apron 6, as such. The partition plate 72 can intercept processing waste such as processing scraps and processing wastewater splashed from the processing area to the tool magazine area, and protect the tool holder 6, the electrical equipment, and the like in the tool magazine area. In addition, because the numerical control machining center processes the workpiece in the machining area, in the machining process, workers can enter the tool magazine area to perform operations such as maintenance of the tool apron 6, overhaul of power equipment and the like, so that on the premise of ensuring the safety of the workers, the time of the operations is saved, the downtime of the numerical control machining center can be greatly reduced, and the machining efficiency is improved. And a tool changing window 721 is provided on the partition 72, and the tool changing window 721 is provided corresponding to the tool holder 6 and then opened or closed by the protection door 71. It can be seen that when the protective door 71 closes the tool changing window 721, the protective door 71 is in the blocking position, and when the protective door opens the tool changing window 721, the protective door 71 is in the non-blocking position. With guard gate 71 locate on baffle 72, the volume of guard gate 71 can be reduced to the motion of guard gate 71, and after guard gate 71 closed tool changing window 721, can then cooperate baffle 72, intercept the processing sweeps and the processing waste water of wider scope, with more comprehensive protection blade holder 6. It should be noted that the design of the present application is not limited to this, and in other embodiments of the present application, the protection assembly 7 may also only include the protection door 71, and the protection door 71 may also separate the machining area and the tool magazine area on the machine base 1, and more completely include the tool holder 6, and when changing the tool, the protection door 71 may be moved.

Further, the protective door 71 of the present embodiment further includes a first driving member 73, and the first driving member 73 drives the protective door 71 to slide along the partition 72 to open or close the tool changing window 721. It can be understood that, the first driving member 73 drives the protection door 71 to slide along the partition plate 72, the space required by the movement of the protection door 71 is small, the movement form of the protection door 71 is simple, which is not only beneficial to reducing the space occupied by the protection assembly 7 on the machine base 1, but also convenient to implement. And the participation of the first driving piece 73 can realize the automatic opening or closing of the protective door 71, thereby improving the automation level of the protective assembly 7. Of course, the design of the present application is not limited thereto, and in other embodiments of the present application, the protection door 71 may also open or close the tool changing window 721 by rotating. Moreover, the protective door 71 can also be operated manually by a worker, wherein the worker can open or close the protective door 71 by manually operating the power member, or can directly open or close the protective door 71 manually.

Alternatively, in the present embodiment, the first driving member 73 and the guard door 71 are both disposed on a side of the partition plate 72 facing away from the processing table 2. With the arrangement, the processing scraps and the processing wastewater can be prevented from splashing to the first driving piece 73 or the transmission mechanism between the first driving piece 73 and the protective door 71, so that the interference on the opening/closing of the protective door 71 is avoided, and the working stability of the protective door 71 is improved. Of course, in order to improve the working stability of the protection door 71, in other embodiments of the present application, an accommodating cavity may be disposed in the partition plate 72 to accommodate the protection door 71 and the first driving member 73, or a protection structure such as a protection cover may be disposed outside the first driving member 73.

Specifically, in the present embodiment, the first driver 73 is an air cylinder. Since the protection door 71 opens or closes the tool changing window 721 by sliding, the moving path of the protection door 71 is a bidirectional movement in a certain linear direction. This kind of single mode of motion chooses for use the cylinder as first driving piece 73, and the suitability is high, simple structure, and it is convenient to set up. Of course, in other embodiments of the present application, a hydraulic cylinder, an electric motor, etc. may be used as the first driving member 73.

Further, in the present embodiment, a second slide rail 74 is provided on a side of the partition 72 facing away from the processing table 2, and the guard door 71 is slidably mounted on the second slide rail 74. It can be understood that, by providing the second slide rail 74 on the partition plate 72 for the sliding installation of the protection door 71, not only the sliding stability of the protection door 71 can be improved, but also the protection door 71 can be more closely attached to the partition plate 72 to improve the tightness of the fit between the protection door 71 and the partition plate 72, so that the processing waste and the processing waste can be more completely intercepted. Of course, the design of the present application is not limited thereto, and in other embodiments of the present application, a pulley may be provided on the partition 72 to slidably engage with the partition 72.

Preferably, in order to further improve the sliding stability of the partition 72, in this embodiment, two sets of second slide rails 74 are disposed on the partition 72, and the two second slide rails 74 are disposed on the upper and lower sides of the tool changing window 721.

As shown in fig. 14, in the present embodiment, the protective door 71 includes a door panel 711, a contact edge 712, and a surrounding frame 713, wherein the surrounding frame 713 surrounds a side of the door panel 711 opposite to the partition 72, the contact edge 712 protrudes from the door panel 711 in the direction of the partition 72 and contacts with the partition 72, and the contact edge 712 is disposed on the periphery of the door panel 711. It can be understood that the surrounding frame 713 and the door plate 711 cooperate to lighten the structural design of the protection door 71, so as to facilitate the driving of the first driving member 73 while ensuring the structural strength of the protection door 71. The abutting edge 712 and the door plate 711 cooperate to reduce the contact area between the protective door 71 and the partition 72, so as to reduce the sliding friction of the protective door 71, and further facilitate the driving of the first driving member 73.

Specifically, a slider is provided on the enclosure 713, and the protection door 71 is slidably engaged with the slide rail through the slider.

Preferably, in the present embodiment, the abutting edge 712 extends obliquely outward from the center of the door panel 711. This increases the contact area between the protection door 71 and the partition 72, and improves the sealing performance of the protection door 71 against the closing of the cutter changing window 721.

With continued reference to fig. 12, in order to increase the structural strength of the partition 72, in the present embodiment, the partition 72 is provided with a reinforcing rib, and the reinforcing rib is provided with a position-avoiding protective door 71.

Further, in this embodiment, the tool holder 6 is movably disposed on the base 1 to extend out of or retract into the tool changing window 721 of the partition 72. It will be appreciated that the tool holder 6 protrudes from the tool changing window 721 to facilitate tool changing of the machining head 5 of the nc machining center, and the tool holder 6 is retracted from the tool changing window 721 to facilitate protection of the tool holder 6 by the protection assembly 7. Of course, in other embodiments of the present application, the machining head 5 of the nc machining center may extend into the tool changing window 721 to change a tool at the tool rest 6.

As shown in fig. 12, the durable five-axis precision mini-gantry nc machining center in this embodiment further includes a second driving member 8, and the second driving member 8 is used for driving the tool holder 6 to slide to extend or retract from the tool changing window 721. It can be understood that the tool apron 6 is driven to slide by the second driving piece 8, the movement mode of the tool apron 6 is simple, the space occupied by the tool apron 6 on the machine base 1 is facilitated, and the realization is convenient. And the participation of the second driving part 8 can realize the automatic movement of the tool apron 6, thereby improving the automation level of the protection component 7. Of course, the design of the present application is not limited thereto, and in other embodiments of the present application, the tool holder 6 may be actuated manually by a worker.

Specifically, in the present embodiment, the second driver 8 is a cylinder. The path of movement of the tool holder 6 is a bi-directional movement in a certain linear direction, due to the tool holder 6 being extended or retracted through sliding the tool changing window 721. This kind of single motion mode chooses for use the cylinder as second driving piece 8, and the suitability is high, simple structure, and it is convenient to set up. Of course, in other embodiments of the present application, a hydraulic cylinder, an electric motor, etc. may be used as the second driving member 8.

Specifically, in the present embodiment, the base 1 is provided with a base corresponding to the tool apron 6, a sliding seat 9 is slidably mounted on the base, the tool apron 6 is mounted on the sliding seat 9, and the second driving member 8 drives the sliding seat 9 to drive the tool apron 6 to slide.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A durable five-axis precise small gantry numerical control machining center is characterized by comprising

A machine base;

the processing table is arranged on the machine base;

2. The durable five-axis precision small gantry numerical control machining center according to claim 1, wherein a first slide rail and a rack are arranged on the top of the supporting wall, the rack extends in the same direction as the first slide rail, the x-axis slide carriage is slidably mounted on the first slide rail, and the driving motor is mounted on the x-axis slide carriage and drives the x-axis slide carriage to slide by driving a gear engaged with the rack to rotate.

3. The durable five-axis precise small gantry numerical control machining center according to claim 2, wherein the x-axis sliding seat comprises a beam mounting portion and a motor mounting portion, the beam is mounted on the beam mounting portion, the motor mounting portion is arranged on two sides of the beam mounting portion along the sliding direction of the x-axis sliding seat, and the driving motor is mounted on the motor mounting portion.

4. The durable five-axis precision small gantry numerical control machining center according to claim 3, wherein the beam mounting portion and the motor mounting portion form a trapezoidal structure.

5. The durable five-axis precision mini-gantry numerically controlled machining center as claimed in claim 4, wherein said x-axis slide further comprises a beam support portion, said beam support portion is disposed on said beam mounting portion and extends from said beam mounting portion toward the center of said beam, said beam support portion is supported at the bottom of said beam.

6. The durable five-axis precision small gantry numerical control machining center according to claim 2, further comprising a grating ruler, wherein the grating ruler is arranged on the support wall and used for positioning the driving motor.

7. The durable five-axis precision small gantry numerical control machining center according to claim 1, wherein the support wall is hollow.

8. The durable five-axis precision small gantry numerical control machining center according to claim 7, wherein the support wall comprises a wall body and support pillars, the wall body is enclosed to form a weight reduction cavity, and the support pillars are arranged in the weight reduction cavity and extend in the vertical direction to support the wall body.

9. The durable five-axis precision mini-gantry numerical control machining center according to claim 1, further comprising a tool apron and a protection assembly, wherein the tool apron is disposed on the base, the tool apron and the machining table are spaced apart from each other on the base, the protection assembly comprises a protection door, the protection door is movably mounted between the machining table and the tool apron, and the protection door has a blocking position for blocking machining waste and machining waste water splashed to the tool apron by the machining table and a non-blocking position for being withdrawn from between the tool apron and the machining table.

10. The durable five-axis precise mini-gantry numerical control machining center according to claim 9, wherein the protection assembly further comprises a partition plate, the partition plate is arranged on the machine base and separates the machining table from the tool apron, the partition plate is provided with a tool changing window, the tool changing window is arranged corresponding to the tool apron, and the protection door is movably arranged on the partition plate and used for opening or closing the tool changing window.