CN217344631U - Portal frame for machining center and double-Y-axis machining center - Google Patents

Abstract

The utility model discloses a two Y axle machining center, including the lathe bed, along two sets of Y axle tracks that the lathe bed set up side by side, be located two processing stations that set up respectively on two sets of Y axle tracks on the lathe bed, two sets of processing main shafts that correspond respectively with two processing stations, still set up the portal frame that is used for installing two sets of processing main shafts on the lathe bed, install the flexible protection of front side of width and Y axle track adaptation at processing station front end and fill up, the flexible protection of front side is filled up the other end and is installed at the orbital front end of Y axle, the flexible protection of front side is filled up and to be buckled when the processing station moves forward. The double-Y-axis machining tables are matched with two groups of independent machining tables, so that each machining table can be fully utilized, and the working efficiency is greatly improved; the processing platform has set up flexible protection pad and can guarantee to add man-hour produced piece can't fall into following piano protection casing or telescopic steel sheet protective cover on, effectively protects the also effectual protection drive assembly of original double-deck protection, promotes product life.

Description

Portal frame for machining center and double-Y-axis machining center

The utility model discloses the application is that the applicant equips limited company, application number is 202122158737.4, the utility model patent application of patent application name "two Y axle machining center" for the all accurate intelligence of Guangdong.

Technical Field

The utility model relates to a digit control machine tool technical field, concretely relates to two Y axle machining centers.

Background

As an important device in the production and processing process of 3C electronic products, in the process of industrial development, the machining center device is also improved. The existing machining center mostly adopts a single Y-axis machining table, namely, one machining table moves on a machine tool body of a machine tool along a Y axis (longitudinal direction) and is matched with a machining main shaft capable of moving on an X axis (transverse direction) and a Z axis (vertical direction), so that an object on the machining table can be machined in a three-dimensional space. Although a double Y-axis machining center is also currently available, in which two Y-axis machining tables are arranged side by side on a bed, the machining tables are not fully utilized by using only one set of machining spindles to cooperate with the two machining tables.

In addition, the existing machining center adopts the steel plate telescopic protective cover matched with the piano protective cover on the outer layer on the driving assembly protection of the Y-axis machining table, so that machining debris or pollutants can be prevented from entering the driving assembly on the lathe bed, for example, a screw rod transmission assembly matched with a motor causes part damage or corrosion, and particularly, damage caused by the debris entering a part gap of the driving assembly is difficult to find and inconvenient to maintain. The telescopic steel plate protective cover and the organ protective cover are widely adopted, but still have problems, for example, the organ protective cover is made of plastic or rubber materials, a groove formed at a folding position can easily enter scraps and is not easy to clean, and the scraps can pierce through the organ protective cover and enter a stacking gap of the telescopic steel plate protective cover at the next layer as long as time passes, so that the steel plate protective cover is damaged, and further the scraps fall into a driving assembly to damage the driving assembly. Particularly, when a metal workpiece is machined, the frequency of occurrence of such a problem increases, thereby affecting the efficiency and life of the equipment. In view of the prior knowledge that the drive assembly already has two layers of shielding structure, an effective and easy-to-implement solution has not been found for the time being.

Meanwhile, the problems that the machining center is not compact in structural design, large in space waste, large in size, inconvenient to adjust and the like always exist.

SUMMERY OF THE UTILITY MODEL

The utility model provides a two Y axle machining center to solve above-mentioned problem.

The embodiment of the utility model provides a pair of two Y axle machining center, including the lathe bed, along two sets of Y axle tracks that the lathe bed set up side by side, be located two processing platforms that set up on two sets of Y axle tracks respectively on the lathe bed, two sets of processing main shafts that correspond respectively with two processing platforms, still set up the portal frame that is used for installing two sets of processing main shafts on the lathe bed, install the flexible protection of front side of width and Y axle track adaptation at processing platform front end and fill up, the flexible protection of the other end of pad of front side is installed at the orbital front end of Y axle, the flexible protection of front side is filled up and is buckled when processing platform moves forward.

Preferably, a rear flexible protection pad with the width matched with the Y-axis track is installed at the rear end of the processing table, the other end of the rear flexible protection pad is installed at the rear end of the Y-axis track, and the rear flexible protection pad can be bent when the processing table moves backwards.

Preferably, each of the two sets of processing spindles comprises more than two processing spindles, and the two sets of processing spindles are driven by two independent transverse driving mechanisms to transversely move on the portal frame respectively.

Preferably, each group of processing spindles is mounted on a traverse plate through a vertical movement assembly, and the traverse plate is driven by a transverse driving mechanism to traverse on the portal frame.

Preferably, the portal frame comprises support columns at two sides and a cross beam, the front side surface of the cross beam is inwards concave to form a transverse accommodating groove for accommodating and mounting the transverse driving mechanism, and the bottom surface of the inner side of the transverse accommodating groove is further inwards concave to form a pipeline accommodating groove for accommodating a pipeline.

Preferably, the vertical motion subassembly includes vertical slide and the vertical actuating mechanism that the vertical slide of drive reciprocated, and the processing main shaft is installed on the sideslip board through vertical slide, and the processing main shaft has the protection casing, and the protection casing includes both sides backplate and front side apron, and both ends all form the kink to the inboard in front and back and are used for making the protection casing width not surpass the width of vertical slide, and backplate front end kink is used for installing the apron, and backplate rear end kink is used for installing on vertical slide.

Preferably, the rear side of vertical slide forms the vertical storage tank that is used for the vertical drive assembly of holding installation to the indent formation, and the position department that vertical slide leading flank corresponds the both sides backplate has set up vertical rib and has been used for installing the both sides backplate, and the lateral wall of vertical rib has still set up the installation space that is used for installing vertical slide to vertical motion subassembly, the installation space is for opening the groove by the downward part degree of depth of vertical rib lateral wall top, and open the tank bottom and set up the mounting hole.

Preferably, the front side of the vertical sliding seat is provided with a middle vertical rib at a position corresponding to the machining spindle, the front side of the middle vertical rib is provided with a mounting hole for mounting the machining spindle, and the vertical ribs are connected through a transverse rib.

Preferably, four corners of the lathe bed are provided with balance adjusting devices, each balance adjusting device comprises a balance base, traction screw and sliding seat, the upper surface of sliding seat is used for supporting the lathe bed, traction screw includes the screw rod body and is located screw rod body front end and the screw head that the diameter is greater than the screw rod body, traction screw's rear portion is the threaded rod, the sliding seat has seted up on the horizontal direction with traction screw matched with screw hole, balanced base's front end has still set up the backstop groove that is used for adaptation screw rod body and backstop screw head, balanced base rear portion upper surface is by the inclined plane that descends to decline after to, the lower surface of sliding seat is with the inclined plane matched with inclined plane of balanced base rear portion upper surface, the upper surface of sliding seat is the horizontal plane still behind two inclined plane cooperations, when traction screw installs balanced base and sliding seat, the sliding seat removes on balanced base when rotating traction screw.

Preferably, the sliding seat upper surface has set up the supporting pad, and the sliding seat passes through the supporting pad and supports the lathe bed.

Preferably, the processing table comprises a workbench for bearing processed objects and a base matched with the Y-axis track, the width of the workbench is larger than that of the base, a cover shell for binding pipelines is detachably mounted on the side wall of the base below the workbench, and the cover shell and the side wall of the base are encircled to form a pipeline channel which is through from front to back.

Preferably, each processing axle of two sets of processing axles includes that 4 processing spindles form 8 first machining center on two Y axles, and 4 processing spindles of each group do not independent motion or integrative linkage respectively.

According to the technical scheme, the double-Y-axis machining table is matched with two groups of independent machining tables, so that each machining table can be fully utilized, and the working efficiency is greatly improved; meanwhile, the processing table is provided with the flexible protective pad, so that the scraps generated in the processing process can not fall into the piano protective cover or the telescopic steel plate protective cover below, the original double-layer protection is effectively protected, the driving assembly is also effectively protected, and the service life of the product is prolonged.

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 drawings without creative efforts.

FIG. 1 is a three-dimensional structure diagram of a double Y-axis machining center in an embodiment of the present invention;

FIG. 2 is a block diagram of a single processing station (including a rail) in an embodiment of the invention;

FIG. 3 is a block diagram of an alternate angle of a single processing station (including the rail) in an embodiment of the invention;

FIG. 4 is a block diagram of a single set of machining spindles (single spindle exploded) in an embodiment of the invention;

FIG. 5 is an exploded view of a single machining spindle in an embodiment of the present invention;

fig. 6 is a structural diagram of a balance adjustment device according to an embodiment of the present invention.

Detailed Description

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

Example (b):

the embodiment of the utility model provides a two Y axle machining center combines fig. 1 to 6 to show, and it includes lathe bed 1, and the lathe bed adopts the marble material more, can have better leveling coefficient, is difficult for producing expend with heat and contract with cold effect along with environmental change. Two sets of Y-axis rails 2 are arranged in parallel along the bed 1, in this embodiment, a reference direction is set with reference to fig. 1, i.e., a front-back direction (toward the reader is a front direction) of the bed, i.e., a left-right direction of the bed, and a Z-axis direction (i.e., an up-down direction of the bed), which are reference directions set for the reader to understand the technical solution. Two processing platforms 3 that are located and set up respectively on two sets of Y axle tracks 2 on lathe bed 1, every group Y axle track all includes the drive assembly who is used for driving the processing platform to remove in this embodiment, and the common scheme adopts and sets up servo motor cooperation lead screw external member between two slide rails, and space utilization is higher to can be accurate drive processing platform move to accurate position on lathe bed Y axle direction, can also adopt linear electric motor drive in other embodiments. Two groups of processing main shafts 4 respectively corresponding to the two processing platforms 3, wherein each group of processing main shafts consists of more than two processing main shafts, more than two processing stations are correspondingly arranged on the processing platforms, and the processing stations can be provided with processing fixtures or vacuum adsorption hole sites or simultaneously provided with fixtures and vacuum adsorption hole sites so as to be used for stably fixing processing workpieces.

The processing main shafts are main parts of the processing center, each group of the two groups of processing main shafts comprises more than two processing main shafts to form a multi-station processing mode, each group is provided with two processing main shafts and is a 4-head machine, each group is provided with three processing main shafts and is a 6-head machine, and the like. The two groups of processing main shafts are respectively driven by two independent transverse driving mechanisms to transversely move on the portal frame so as to ensure that each processing platform completely and independently corresponds to one group of processing main shafts, the two groups of matched processing main shafts and the processing platforms are not interfered with each other, and the utilization rate of the processing platforms is high. In order to ensure the vertical efficient stable motion of the processing main shafts, each group of processing main shafts 4 is installed on a traverse plate 41 through a vertical motion assembly, the traverse plate 41 is driven by a transverse driving mechanism 58 to traverse on a portal frame, and 4 processing main shafts are located on the same traverse plate, so that the structure is simplified. The transverse moving driving mechanism can be realized by matching a servo motor with a screw rod sleeve. The vertical motion assembly comprises a vertical sliding seat and a vertical driving mechanism for driving the vertical sliding seat to move up and down, and the vertical driving mechanism can be realized by matching a servo motor with a lead screw sleeve. The machining main shaft 4 is installed on the transverse moving plate through the vertical sliding seat 42, the machining main shaft 4 is provided with a protective cover 43, the protective cover 43 comprises two side protective plates 431 and a front side cover plate 432, the two side protective plates 431 are respectively provided with a bent part at the inner sides at the front end and the rear end and used for enabling the width of the protective cover not to exceed the width of the vertical sliding seat, the bent part at the front end of the protective plate 431 is used for installing the cover plate 432, and the bent part at the rear end of the protective plate 431 is used for installing the vertical sliding seat 42. The existing spindle protection cover mostly adopts a three-side integrated bending forming mode, then two side protection plates of the spindle protection cover directly extend to the side wall of the sliding seat for installation, the whole transverse width of the machining spindle is undoubtedly increased, the transverse expansion of the machining spindle is not facilitated under the original environment with limited transverse width, the installation sequence of the machining spindles can only be installed one by one from left to right or from right to left, and the whole installation efficiency is not high. The components of a whole that can function independently in this embodiment are the housing structure, and the structure of buckling of both sides backplate can make the protection casing needn't install on the lateral wall of slide, the snap-on in the leading flank of slide can, reduced the whole width of processing main shaft in horizontal, be favorable to the horizontal expansion of processing main shaft, but also the protection casing of 4 processing main shafts can install simultaneously, from the slide front side can. The structure can also be very convenient for the daily maintenance and repair of workers, and the maintenance or repair can be carried out without disassembling the whole set of processing main shafts like the existing structure.

In addition, the rear side of vertical slide 42 inwards forms vertical storage tank 421 that is used for the holding to install vertical drive assembly, and the protruding structure that vertical storage tank 421 both sides formed just can cooperate the horizontal moving board on the vertical slide rail 433 that corresponds, and whole structure is very compact reasonable, and space utilization is higher, and the position department that vertical slide 42 front side corresponds the both sides backplate has set up vertical rib 422 and has been used for installing the both sides backplate, and vertical rib 422's lateral wall has still set up the installation space 423 that is used for installing vertical slide to vertical motion subassembly, the installation space is for the open groove of being opened by the downward partial degree of depth in vertical rib lateral wall top, opens the tank bottom and sets up mounting hole 424. The front side of the vertical sliding seat 42 is provided with a middle vertical rib 425 at a position corresponding to the processing spindle, the front side of the middle vertical rib 425 is provided with a mounting hole 426 for mounting the processing spindle, and the vertical ribs are connected through a transverse rib 427. The structure can reduce consumables to the maximum extent and ensure that the sliding seat structure is firm and reliable, and is convenient to be matched and installed with other parts. This machining spindle mounting structure can be applied to other machine tool structures.

Every group processing axle includes that 4 processing spindles form 8 first machining center in two sets of processing axles in this embodiment, 4 processing spindles of every group independent motion respectively, including vertical upper independent motion and the rotation control of processing spindle also mutually independent, certainly also can be the processing spindle of same group vertical upper independent motion respectively, and the rotation control of processing spindle is by the synchronous rotation of same control signal control formation, compare the structure in the integrative linkage of processing spindle of same group in prior art, obviously every group's independent motion on the 4 processing spindles of every group respectively independent motion cooperation in this embodiment, can adapt to more processing work pieces more, and promote work efficiency. Especially, when a certain machining station or certain machining stations are empty, the working state of the corresponding machining main shaft can be controlled, the energy consumption is further reasonably distributed, and the improvement on the accuracy of the machined workpiece is facilitated. Of course, in other embodiments, the 4 processing spindles of each group may also adopt an integrated linkage manner, that is, the vertical motion of the processing spindles of the same group is controlled by the same control signal to form vertical linkage, and the rotation of the processing spindles is also controlled by the same control signal, or the processing spindles of the same group may be arranged on the same vertical motion assembly, so that the use of vertically driven motors can be reduced. It will be appreciated that the independent movement or integral linkage for each set of machining spindles may also be applied to the configuration of 2 machining spindles per set or more machining spindles per set.

Still set up the portal frame 5 that is used for installing two sets of processing main shaft 4 on the lathe bed 1, portal frame 5 includes both sides support column 51 and crossbeam 52 in this embodiment, support column 51 below has set up a base piece 53, the lateral wall of support column 51 forms mounting groove 54 to the indent, the diapire of mounting groove 54 sets up a through-hole (not shown in the figure) that runs through to the base piece downwards, correspond on the base piece 53 and set up mounting hole (not shown in the figure), through-hole to the mounting hole of base piece of a bolt spare 55 screw in mounting groove makes support column and base piece locking fixed, the design of parts such as mounting groove can make the equipment of portal frame more convenient, the horizontal cross-section of base piece is greater than the horizontal cross-section of support column, it is bigger to guarantee the area of contact of portal frame and lathe bed, increase the installation stability of portal frame. The front side surface of the cross beam 52 is inwards concave to form a transverse accommodating groove 56 for accommodating and mounting a transverse driving mechanism, which is a structure adopted by the existing machine tool, related pipelines are also arranged in the transverse accommodating groove, and the pipelines are easily messy and interfered. The machine tool gantry structure in the embodiment can also be applied to machine tool equipment with other structures.

The front side flexible protection pad 6 with the width matched with the Y-axis track is installed at the front end of the machining table 3, the width matched with the Y-axis track means that the width of the front side flexible protection pad is equivalent to that of the Y-axis track, the Y-axis track can be covered to form the protection size, the accuracy of the full equal width is not required, the protection can be completely covered by a larger point, and the protection purpose can be realized by ensuring that scraps do not fall into the Y-axis track by a smaller point. The front end at Y axle 2 is installed to the other end that the flexible protection of front side was filled up 6, so the front end of processing platform to the front end of Y axle track all can be covered the protection by the flexible protection of front side and fill up, the front end of Y axle track 2 can be the front end of going up the side or the upper end of leading flank, because the processing platform is the removal, consequently, adopt flexible protection to fill up, whether the preferred transparent plastic cushion of chooseing exists unusually below so that observe the protection and fill up, also can adopt other flexible macromolecular material, and is durable, corrosion-resistant. The flexible protection of front side is filled up and is buckled when processing platform 3 moves forward, and the flexible protection of front side is filled up and is buckled or the uplift when processing platform antedisplacement, nevertheless can not influence processing and can not influence its protective effect yet, and piece and the spot that falls on the flexible protection of front side are filled up can be along with the flexible protection of buckling uplift and fall into the blowdown space of lathe bed automatically, have saved the step of artifical clearance, and it is comparatively convenient to operate.

In a similar way, in order to protect the whole Y-axis track, the rear-side flexible protection pad with the width matched with the Y-axis track is installed at the rear end of the processing table in the embodiment, the other end of the rear-side flexible protection pad is installed at the rear end of the Y-axis track, and the rear-side flexible protection pad can be bent when the processing table moves backwards. Generally speaking, the forward-backward movement range of the processing table is limited, the forward-backward movement stroke of the processing table plus the distance from the front end of the processing table to the front end of the Y-axis track when the processing table moves to the front end of the stroke is the length of the front-side flexible protection pad, and the forward-backward movement stroke of the processing table plus the distance from the rear end of the processing table to the rear end of the Y-axis track when the processing table moves to the rear end of the stroke is the length of the rear-side flexible protection pad. All there is the wind organ protection casing 8 to protect in Y orbital front and back side, piece or spot in case fall into the organ protection casing, not only be difficult to discover, it is also very inconvenient to clear up after discovering in addition, increases flexible protection pad in this embodiment again and has realized solving the scheme of complicated problem with simple means, has formed a new workstation structure.

As is well known, the use environment of a machining center must be installed on a flat workshop floor, but in a real environment, the flatness of the workshop floor cannot be ensured, or after a period of use, the workshop floor begins to be sunken or raised. Therefore, it is necessary to ensure the ground of the machining center to be flat. In this embodiment, the balance adjusting devices 7 are disposed at four corners of the bed, each balance adjusting device 7 includes a balance base 71, a traction screw 72 and a sliding seat 73, an upper surface of each sliding seat 73 is used for supporting the bed 1, each traction screw 72 includes a screw body 721 and a screw head 722 which is located at a front end of the screw body and has a diameter larger than that of the screw body, a rear portion of each traction screw is a threaded rod, the sliding seat 73 is horizontally provided with a threaded hole (not shown) which is matched with the traction screw, a front end of the balance base 71 is further provided with a stopping groove 711 which is used for adapting to the screw body and stopping the screw head, an upper surface of a rear portion of the balance base 71 is an inclined surface which is inclined downward from front to rear, a lower surface of the sliding seat is an inclined surface which is matched with an inclined surface of an upper surface of a rear portion of the balance base, an upper surface of the sliding seat is still a horizontal surface after the two inclined surfaces are matched, when the traction screw 72 is mounted on the balance base 71 and the sliding seats 73, the sliding seat moves on the balance base when the traction screw rod is rotated. The structure is simple, the moving form adjustable in the front and back direction can be converted into the up-and-down movement capable of being adjusted accurately through the inclined plane matched structure, when the height of a certain foot of the lathe bed needs to be adjusted, the horizontal height of the sliding seat can be adjusted easily and conveniently by screwing the head of the screw rod from the front side, and then the lathe bed is adjusted. The metal part that all adopts of general sliding seat, in order to prevent the unstable problem of sliding seat and lathe bed combination, sliding seat upper surface has set up supporting pad 74 in this embodiment, and the sliding seat passes through the supporting pad and supports the lathe bed. The supporting pad can be selected for use non-metallic's gasket, can adopt macromolecular material, and durable and have certain flexibility and can prevent that the lathe bed from sliding. Such a balance adjustment device is applicable to other machine tool configurations.

More pipelines are used in the machine tool, and the pipelines are clean and are often ignored by technicians. In this embodiment, the processing platform 3 includes a workbench 31 for bearing the processed object and a base 32 matched with the Y-axis track, the width of the workbench 31 is greater than that of the base 32, a cover 33 for restricting the pipeline is detachably mounted on the side wall of the base 32 below the workbench 31, and the cover 33 and the side wall of the base enclose a pipeline channel running through from front to back. This embodiment is through a simple structure, and install in the workstation below covertly, does not have any interference to the processing technology, and can provide practical housing so that the pipeline is clean and tidy. This kind of table line cover structure can also be applied to other machine tool structures.

The double-Y-axis machining center provided by the embodiment of the invention is described in detail above, and the principle and the implementation mode of the invention are explained by applying a specific example, and the description of the above embodiment is only used for helping to understand the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea and method of the present invention, there may be changes in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims (10)

1. The portal frame for the machining center is characterized by comprising support columns on two sides and a cross beam, wherein the front side surface of the cross beam is inwards concave to form a transverse accommodating groove for accommodating and mounting a transverse driving mechanism, and the bottom surface of the inner side of the transverse accommodating groove is further inwards concave to form a pipeline accommodating groove for accommodating a pipeline.

2. The portal frame for a machining center as claimed in claim 1, wherein a base block is disposed under the supporting column, the side wall of the supporting column is recessed inward to form a mounting groove, a through hole penetrating to the base block is disposed downward on the bottom wall of the mounting groove, a mounting hole is correspondingly disposed on the base block, and the supporting column is locked with the base block by a bolt screwed into the through hole of the mounting groove to the mounting hole of the base block.

3. The double-Y-axis machining center comprises a lathe bed, two groups of Y-axis rails arranged in parallel along the lathe bed, two machining tables arranged on the two groups of Y-axis rails on the lathe bed respectively, and two groups of machining spindles corresponding to the two machining tables respectively, and is characterized by further comprising the portal frame in claim 1 or 2, wherein each group of the two groups of machining spindles comprises more than two machining spindles, and the two groups of machining spindles are driven by two independent transverse driving mechanisms to move transversely on the portal frame respectively.

4. The dual Y-axis machining center of claim 3, wherein each set of machining spindles is mounted by a vertical motion assembly to a traverse plate that is driven by a traverse drive mechanism to traverse the gantry.

5. The double Y-axis machining center of claim 4, wherein the vertical movement assembly comprises a vertical slide and a vertical driving mechanism for driving the vertical slide to move up and down, the machining spindle is mounted on the traverse plate through the vertical slide, the machining spindle is provided with a protective cover, the protective cover comprises two side protective plates and a front side cover plate, the two side protective plates are respectively provided with a bent part at the inner sides at the front end and the rear end for ensuring that the width of the protective cover does not exceed the width of the vertical slide, the front end of the protective plate is provided with a bent part for mounting the cover plate, and the rear end of the protective plate is provided with a bent part for mounting on the vertical slide.

6. The double-Y-axis machining center according to claim 5, wherein the rear side of the vertical slide is recessed inwards to form a vertical accommodating groove for accommodating and installing the vertical driving assembly, the front side of the vertical slide is provided with vertical ribs corresponding to the positions of the two side guard plates for installing the two side guard plates, the outer side walls of the vertical ribs are further provided with installation spaces for installing the vertical slide to the vertical moving assembly, the installation spaces are open grooves formed by the top ends of the outer side walls of the vertical ribs to the depth of the downward part, and the bottom of the open grooves is provided with installation holes.

7. The double-Y-axis machining center according to claim 6, wherein the front side of the vertical sliding seat is provided with a middle vertical rib at a position corresponding to the machining spindle, the front side of the middle vertical rib is provided with a mounting hole for mounting the machining spindle, and the vertical ribs are connected through a transverse rib.

8. The double Y-axis machining center according to claim 3, wherein the balance adjusting means is provided at four corners of the machine body, the balance adjusting means includes a balance base, a traction screw, and a sliding seat, an upper surface of the sliding seat is provided for supporting the machine body, the traction screw includes a screw body and a screw head portion having a diameter larger than that of the screw body and provided at a front end of the screw body, a rear portion of the traction screw is a threaded rod, the sliding seat is provided with a threaded hole in a horizontal direction for engagement with the traction screw, a stopper groove for fitting the screw body and stopping the screw head portion is provided at a front end of the balance base, an upper surface of a rear portion of the balance base is an inclined surface inclined downward from front to rear, a lower surface of the sliding seat is an inclined surface for engagement with the inclined surface of the upper surface of the rear portion of the balance base, an upper surface of the sliding seat remains a horizontal surface after the two inclined surfaces are engaged, and when the traction screw is mounted to the balance base and the sliding seat, the sliding seat moves on the balance base when the traction screw rod is rotated.

9. The dual Y-axis machining center of claim 8, wherein the sliding bed is provided with support pads on an upper surface thereof, and the sliding bed supports the machine bed via the support pads.

10. The dual Y-axis machining center of claim 3, wherein the machining table includes a table for carrying the workpiece to be machined and a base for engaging with the Y-axis rail, the table having a width greater than a width of the base, a housing for confining the pipeline being detachably mounted on a side wall of the base below the table, the housing and the side wall of the base enclosing a pipeline passage extending therethrough.

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