CN211162853U

CN211162853U - Cross beam for viaduct type gantry machining center

Info

Publication number: CN211162853U
Application number: CN201921315606.9U
Authority: CN
Inventors: 邬伟军; 蒋思宝; 廖敏; 高玉琢; 孟浩权; 周浩东
Original assignee: Ningbo Haitian Precision Machinery Co Ltd
Current assignee: Ningbo Haitian Precision Machinery Co Ltd
Priority date: 2019-08-14
Filing date: 2019-08-14
Publication date: 2020-08-04
Anticipated expiration: 2029-08-14

Abstract

The utility model discloses a crossbeam for overpass formula longmen machining center, including the crossbeam body, the bottom surface of crossbeam body is equipped with two slider installation faces, and the crossbeam body is bilateral symmetry structure, and two slider installation face bilateral symmetry set up, and the front side and the rear side of the bottom of crossbeam body all are provided with two overhanging bosss, and the front side and the rear side of every slider installation face correspond a boss respectively, and the bottom surface and a slider installation face of every boss flush. The beam adopts a modular design, the follow-up performance of the beam body structure can be improved, and the influence of a heat source on a machine tool is reduced to the minimum; the cross beam has the advantages of good rigidity, low cost, good universality and convenient assembly, can effectively reduce the overturning moment of the ram component, reduces the torsional deformation of the cross beam body, improves the rigidity of the cross beam, ensures the precision of a machine tool, and can be universally used in viaduct type gantry machining centers applied in different fields of aerospace, mold industry, traditional manufacturing industry and the like.

Description

Cross beam for viaduct type gantry machining center

Technical Field

The utility model relates to a machining center crossbeam specifically is a crossbeam that is used for overpass formula longmen machining center.

Background

In recent years, high-speed cutting is widely applied to manufacturing of dies and tools in China and machining of complex curved surface and thin-wall parts in the field of aerospace. With the subdivision of industries, the machine tool industry needs to continually push out products for different industries. For a viaduct type gantry machining center, in the field of aerospace, a machine tool is required to be provided with five spindle heads, and the requirements on feeding speed, fast moving speed and spindle rotating speed are very high; the five-shaft head or 3+2 swinging head is required to be arranged in the mold industry, compared with the aerospace field, the requirements on feeding, rotating speed and the like are not particularly high, but the requirements on the precision and the surface quality of a processing mold are very high; in the traditional manufacturing industry, no special requirements are required on accessory heads, and the requirements on power torque of a main shaft, feeding speed, fast moving speed and rotating speed of the main shaft are lower than those in the aerospace field and the die industry.

The viaduct type gantry machining center applied to each industry is different in specification size, feeding parameters, fast moving speed, spindle rotating speed, working stroke of each servo shaft and the like, but the structural form of the machine tool body is still relatively stable. The beam is used as an important component of a viaduct type gantry machining center, has large size and mass and generally adopts a casting form. For the viaduct type gantry machining center with the movable cross beam on the upright post, the driving modes of the cross beam are generally three: screw drive, rack and pinion drive, and linear motor drive. Under different drive modes, the structure of the cross beam is different, the transition connecting pieces equipped on the cross beam are also different, and different drive structures are connected through different transition connecting pieces. In the casting and modeling process of a casting factory, different beam wood formers and transition connecting piece wood formers need to be configured for beams in different driving forms, namely the beam wood formers and the transition connecting piece wood formers are in a one-to-one form, the types and the number of the wood formers are more, the occupied space is larger, the field management is not facilitated, and the manufacturing cost and the maintenance cost of the wood formers are higher. In addition, the bottom surface of crossbeam is equipped with two slider installation faces, installs the slider respectively on two slider installation faces, installs respectively on the stand of lathe both sides with two slider matched with slide rails, the crossbeam spanes on the stand of lathe both sides through the cooperation of two sliders and twice slide rails, the saddle is installed upright in the crossbeam front side, the ram is installed upright on the saddle. Under the drive of the driving structure, the cross beam can move back and forth along the upright columns on the two sides of the machine tool. Because the cross beam is not a regular front-back symmetrical structure, the gravity center is deviated to the front side of the cross beam, and the mass of the ram component is larger, the overturning moment (namely the rolling moment of rolling forwards) of the ram component is larger, the torsional deformation of the cross beam is increased, and the rigidity of the cross beam is insufficient.

Disclosure of Invention

The utility model aims to solve the technical problem that, to prior art not enough, provide a crossbeam that is used for overpass formula longmen machining center, this crossbeam adopts the modularized design, and the rigidity is good, with low costs, the commonality is good, can generally be used to different fields such as aerospace, mould trade and traditional manufacturing industry and use the overpass formula longmen machining center.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: the cross beam for the viaduct type gantry machining center comprises a cross beam body, wherein two sliding block mounting surfaces are arranged on the bottom surface of the cross beam body, the cross beam body is of a bilateral symmetry structure, the two sliding block mounting surfaces are arranged in bilateral symmetry, two protruding bosses extending outwards are arranged on the front side and the rear side of the bottom of the cross beam body, the front side and the rear side of each sliding block mounting surface correspond to one boss respectively, and the bottom surface of each boss is flush with one sliding block mounting surface.

The utility model discloses a crossbeam for overpass formula longmen machining center, its crossbeam body adopts bilateral symmetry structure, can be equipped with two symmetrical tool magazines when guaranteeing the installation. This crossbeam body adopts the modularized design, can adopt the drive structure of left and right sides simultaneous drive, avoids the phenomenon of crawling that causes because of unilateral drive, promotes the follow-up performance of crossbeam body structure to reduce the influence that the heat source caused to the lathe to minimum.

For a machine tool factory, after the beam is adopted, the appearance of the machine tool can be kept unchanged due to the fact that the structure of the beam body is unchanged and only the driving structures are different, and therefore the stability and the universality of the protection design of the machine tool are improved, and one set of protection meets the protection requirements of the machine tool with three types of driving modes. Meanwhile, for a casting factory, in the casting and molding process, one beam wood pattern can be matched with different transition connecting piece wood patterns corresponding to different driving structures for use, namely the beam wood pattern and the transition connecting piece wood pattern are in a one-to-many form, so that the universality of the beam wood pattern is improved, the site management of the casting factory on the wood pattern is facilitated, and the manufacturing cost and the maintenance cost of the wood pattern are reduced.

In addition, the front side and the rear side of the bottom of the beam body are provided with two protruding bosses extending outwards, the front side and the rear side of each slider mounting surface correspond to one boss respectively, and the bottom surface of each boss is flush with one slider mounting surface. The boss actually has the effect of prolonging the mounting surface of the sliding block, and after the saddle ram component is mounted on the cross beam, the gravity center of the saddle ram component is unchanged, and the force arm generated by the gravity of the saddle ram component is reduced, so that the overturning moment of the saddle ram component is effectively reduced, the torsional deformation of the cross beam body is reduced, the rigidity of the cross beam is improved, and the precision of a machine tool is ensured. And because the crossbeam body is the foundry goods, to crossbeam body foundry goods, carry out epitaxial extension to the slider installation face through above-mentioned boss, can effectively reduce the slider installation face and appear casting defects such as shrinkage porosity, gas pocket, the design of this boss simultaneously can increase the operating space that the lathe assembly personnel installed the lathe protective structure, reduces assembly personnel's working strength.

Preferably, the left side and the right side of the bottom of the boss on the left side of the beam body are respectively provided with a first positioning groove and a second positioning groove, the first positioning groove and the second positioning groove are respectively used for installing a first side ejector block and a second side ejector block, the cross section of the first side ejector block is L type, the cross section of the second side ejector block is in a right trapezoid shape, the first side ejector block and the second side ejector block are used for adjusting the verticality between the slider on the left side of the beam body and the beam body, and the bottom surface of the boss on the right side of the beam body is a complete plane.

Preferably, the beam body is of a box structure, a reinforcing rib net is integrally connected and arranged in an inner cavity of the beam body, and the reinforcing rib net is composed of staggered reinforcing rib plates. The reinforcing rib net can ensure the deformation resistance and the rigidity of the cross beam while meeting the lightweight design requirement of the cross beam.

Preferably, the reinforcing rib plate comprises a plurality of transverse ribs which are uniformly distributed from top to bottom, a plurality of longitudinal ribs which are uniformly distributed from left to right and a plurality of inclined ribs which are obliquely arranged, each transverse rib is arranged along the length direction of the beam body, each longitudinal rib is perpendicular to each transverse rib, and two ends of each inclined rib are respectively connected and arranged at the intersection of the corresponding transverse rib and the corresponding longitudinal rib. The design of above-mentioned horizontal muscle, indulge muscle and diagonal rib makes the deformation of crossbeam in the use more linear, rule, and precision control and the maintenance when convenient follow-up lathe postposition is handled in addition, and in addition, the bilateral symmetry design of cooperation crossbeam can improve the resistance to deformation ability and the rigidity of crossbeam, even the lathe is heated deformation, crossbeam both sides also can the symmetry uniform deformation, is favorable to improving lathe precision and precision retentivity.

Preferably, the front side of crossbeam body be provided with two lead screw installation departments, two lead screw installation departments bilateral symmetry set up, every lead screw installation department the outside be provided with the polylith triangle muscle that is radial interval distribution with this lead screw installation department as the center, polylith triangle muscle with crossbeam body coupling setting. For a saddle ram component driven by a lead screw, two ends of the lead screw component are respectively installed on two lead screw installation parts. In the actual machining process of the machine tool, because the saddle ram component moves left and right on the cross beam, when a complex curved surface (particularly a machining die) is machined, the machine tool needs to be accelerated and decelerated frequently in all directions, so that the saddle ram component can repeatedly impact the cross beam body in the acceleration and deceleration process, and a part of impact can be offset by adopting a plurality of rib plates distributed radially at intervals, so that the dynamic response characteristic of the machine tool is improved, and the rigidity of the cross beam is effectively improved.

Preferably, the upper side and the lower side of each screw rod installation part are respectively connected with a trapezoidal rib which is horizontally arranged, and a plurality of triangular ribs which are radially distributed at intervals are connected and arranged on each trapezoidal rib. The matching of the trapezoidal ribs and the triangular rib plates can ensure the improvement and the improvement effect on the dynamic response characteristic of the machine tool and the rigidity of the cross beam.

Preferably, three triangular ribs are connected to each trapezoidal rib on the outer side of the screw installation part on the left side of the cross beam body, four triangular ribs are connected to each trapezoidal rib on the outer side of the screw installation part on the right side of the cross beam body, and therefore the dynamic response characteristic of the machine tool driven by the screw rod of the saddle ram component can be met.

Preferably, the front side of the beam body is connected with two limiting blocks, and the two limiting blocks are located between the two screw rod installation parts. After assembly, the saddle is slidably mounted on the cross beam and can move left and right along the cross beam. The two limiting blocks can limit the left and right movement of the saddle. The two limit blocks are respectively and additionally provided with the rubber blocks, so that the further protection and buffering effects can be achieved.

Compared with the prior art, the utility model has the advantages of as follows:

1. the utility model discloses a crossbeam for overpass formula longmen machining center, its crossbeam body adopts the modularized design, can adopt left and right sides simultaneous drive's drive structure, avoids the phenomenon of crawling that causes because of unilateral drive, promotes the follow-up performance of crossbeam body structure to the influence that causes the lathe with the heat source falls to minimumly.

2. The utility model discloses a crossbeam can be general in the overhead bridge formula longmen machining center that different fields such as aerospace, mould trade and tradition manufacture trade used. Meanwhile, the stability and the universality of the protection design of the machine tool are improved, so that one set of protection meets the protection requirements of the machine tool with three types of driving modes.

3. The utility model discloses a crossbeam, its required crossbeam wooden model of casting molding and transition piece wooden model are a pair of multiform, can improve the commonality of crossbeam wooden model, make things convenient for the cast house to the on-the-spot management of wooden model to reduce the cost of manufacture and the maintenance cost of wooden model.

4. The utility model discloses a crossbeam, the front side and the rear side of its crossbeam body all are provided with two overhanging bosss, through boss extension slider installation face, can make the focus of saddle ram part move forward to effectively reduce the upset moment of ram part, make the torsional deformation of crossbeam body descend, promote the rigidity of crossbeam, guarantee the lathe precision; meanwhile, the boss can effectively reduce casting defects such as shrinkage porosity and air holes on the slider mounting surface, and the design of the boss can increase the operable space for mounting the machine tool protection structure by machine tool assembly personnel and reduce the working strength of the assembly personnel.

Drawings

FIG. 1 is an external view of the cross beam of the present invention;

fig. 2 is a right side view of the cross beam of the present invention;

FIG. 3 is a schematic partial cross-sectional view of the cross beam of the present invention;

FIG. 4 is a front view showing the effect of the screw member after being mounted on the cross member of embodiment 2;

FIG. 5 is an enlarged view taken at I in FIG. 4;

FIG. 6 is a diagram showing the connection effect of the cross beam A and the transition piece B for connecting the screw driving structure in embodiment 2;

FIG. 7 is a diagram showing the connection effect of the beam A and a transition piece C for connecting a rack and pinion driving structure in embodiment 2;

fig. 8 is a diagram showing the effect of the connection between the beam a and the transition piece D for connecting the linear motor driving structure according to embodiment 2.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

The cross beam for the viaduct type gantry machining center in embodiment 1 comprises a cross beam body 1, wherein the cross beam body 1 is of a box structure, a reinforcing rib net is integrally connected and arranged in an inner cavity of the cross beam body 1, and the reinforcing rib net is composed of staggered reinforcing rib plates; the bottom surface of crossbeam body 1 is equipped with two slider installation faces 11, and crossbeam body 1 is bilateral symmetry structure, and two slider installation faces 11 bilateral symmetry set up, and the front side and the rear side of the bottom of crossbeam body 1 all are provided with two overhanging bosss 12, and the front side and the rear side of every slider installation face 11 correspond a boss 12 respectively, and the bottom surface of every boss 12 flushes with a slider installation face 11.

In embodiment 1, first positioning groove 17 and second positioning groove 18 have been seted up respectively to the left side and the right side of the bottom of boss 12 that is located the left side of crossbeam body 1, first positioning groove 17 and second positioning groove 18 are used for installing first side kicking block (not shown in the figure) and second side kicking block (not shown in the figure) respectively, the cross section of first side kicking block is L type, the cross section of second side kicking block is right trapezoid, first side kicking block and second side kicking block are used for adjusting the straightness that hangs down that is located left slider (not shown in the figure) of crossbeam body 1 and crossbeam body 1, the bottom surface of boss 12 that is located the right side of crossbeam body 1 is a complete plane.

In embodiment 1, deep floor includes a plurality of horizontal muscle 21 of upper and lower equipartition, controls a plurality of longitudinal muscle 22 of equipartition and a plurality of diagonal muscle 23 that the slope set up, and every horizontal muscle 21 sets up along the length direction of crossbeam body 1, and every longitudinal muscle 22 is perpendicular to every horizontal muscle 21 and sets up, and the setting is connected respectively at the intersection of corresponding horizontal muscle 21 and longitudinal muscle 22 at the both ends of every diagonal muscle 23.

The beam for the viaduct type gantry machining center in embodiment 2 is different from that in embodiment 1 in that in embodiment 2, two lead screw mounting portions 13 are arranged on the front side of a beam body 1, the two lead screw mounting portions 13 are arranged in bilateral symmetry, a plurality of triangular ribs 14 which are radially distributed at intervals and take the lead screw mounting portions 13 as centers are arranged on the outer side of each lead screw mounting portion 13, and the triangular ribs 14 are integrally connected with the beam body 1; the front side of crossbeam body 1 is connected with two stopper 15, and two stopper 15 are located between two lead screw installation portions 13.

In embodiment 2, the upper side and the lower side of each screw mounting portion 13 are respectively connected with a trapezoidal rib 16 that is horizontally arranged, each trapezoidal rib 16 is connected with a plurality of triangular ribs 14 that are radially distributed at intervals, and the triangular ribs 14 are all triangular ribs 14. Specifically, three triangular ribs 14 are connected to each trapezoidal rib 16 located on the outer side of the screw mounting portion 13 on the left side of the cross beam body 1, and four triangular ribs 14 are connected to each trapezoidal rib 16 located on the outer side of the screw mounting portion 13 on the right side of the cross beam body 1.

The screw member 3 is mounted on the cross member of embodiment 2, see fig. 4 in a front view, and a saddle ram member on the cross member is driven by the screw member 3.

Taking the beam of embodiment 2 as an example, it can be matched with different transition pieces, and connected with different driving structures through the transition pieces.

Fig. 6 is a connection effect diagram of the cross beam a and a transition connection piece B (i.e., a module B) for connecting a lead screw driving structure in embodiment 2, where the module B is used for connecting a lead screw nut, and finally the lead screw driving structure drives the cross beam to realize the movement of the cross beam on the column.

Fig. 7 is a connection effect diagram of the cross beam a and a transition piece C (i.e., a C module) for connecting the rack and pinion driving structure in embodiment 2, where the C module is used for connecting a reduction motor and a gear, and simultaneously connecting a felt wheel for lubrication, and finally driving the cross beam by the rack and pinion driving structure in cooperation with a rack installed on the column, so as to realize the movement of the cross beam on the column.

Fig. 8 is a connection effect diagram of the beam a of embodiment 2 and a transition connection member D (i.e., a D module) for connecting a driving structure of the linear motor, where the D module is equivalent to a transition plate and is used to connect a mover portion of the direct motor, and a stator portion of the linear motor is mounted on the column, and finally the driving structure of the linear motor drives the beam to realize the movement of the beam on the column.

Claims

1. The utility model provides a crossbeam for overpass formula longmen machining center, includes the crossbeam body, the bottom surface of crossbeam body be equipped with two slider installation faces, its characterized in that: the beam body is of a bilateral symmetry structure, the two slider mounting surfaces are arranged bilaterally symmetrically, two protruding bosses extending outwards are arranged on the front side and the rear side of the bottom of the beam body, the front side and the rear side of each slider mounting surface correspond to one boss respectively, and the bottom surface of each boss is flush with one slider mounting surface.

2. The cross beam for the viaduct type gantry machining center according to claim 1, wherein a first positioning groove and a second positioning groove are formed in the left side and the right side of the bottom of the boss located on the left side of the cross beam body respectively, the first positioning groove and the second positioning groove are used for mounting a first side top block and a second side top block respectively, the cross section of the first side top block is L type, the cross section of the second side top block is right trapezoid, the first side top block and the second side top block are used for adjusting the perpendicularity between a sliding block located on the left side of the cross beam body and the cross beam body, and the bottom surface of the boss located on the right side of the cross beam body is a complete plane.

3. The beam for the viaduct type gantry machining center according to claim 1, wherein: the beam body is of a box body structure, a reinforcing rib net is integrally connected and arranged in an inner cavity of the beam body, and the reinforcing rib net is composed of staggered reinforcing rib plates.

4. The beam for the viaduct type gantry machining center according to claim 3, wherein: the reinforcing rib plate comprises a plurality of transverse ribs which are uniformly distributed from top to bottom, a plurality of longitudinal ribs which are uniformly distributed from left to right and a plurality of inclined ribs which are obliquely arranged, wherein each transverse rib is arranged along the length direction of the beam body, each longitudinal rib is perpendicular to each transverse rib, and the two ends of each inclined rib are respectively connected and arranged at the intersection of the corresponding transverse rib and the corresponding longitudinal rib.

5. The beam for the viaduct type gantry machining center according to claim 3, wherein: the front side of crossbeam body be provided with two lead screw installation departments, two lead screw installation departments bilateral symmetry set up, every lead screw installation department the outside be provided with the polylith triangle muscle that is radial interval distribution with this lead screw installation department as the center, polylith triangle muscle with crossbeam body coupling set up.

6. The beam for the viaduct type gantry machining center according to claim 5, wherein: every the upside and the downside of lead screw installation department respectively be connected with the trapezoidal muscle that a level set up, every trapezoidal muscle on connect and be provided with a plurality of that are radial interval distribution triangular muscle.

7. The beam for the viaduct type gantry machining center according to claim 6, wherein: and the triangular ribs are connected to each trapezoidal rib on the outer side of the screw rod installation part on the left side of the beam body, and the triangular ribs are connected to each trapezoidal rib on the outer side of the screw rod installation part on the right side of the beam body and provided with four triangular ribs.

8. The beam for the viaduct type gantry machining center according to claim 5, wherein: the front side of crossbeam body be connected with two stoppers, two stoppers be located two lead screw installation departments between.