CN113319600B - Bridge type gantry machining center - Google Patents
Bridge type gantry machining center Download PDFInfo
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- CN113319600B CN113319600B CN202110702231.7A CN202110702231A CN113319600B CN 113319600 B CN113319600 B CN 113319600B CN 202110702231 A CN202110702231 A CN 202110702231A CN 113319600 B CN113319600 B CN 113319600B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
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Abstract
The invention relates to a bridge gantry machining center which comprises an integrated lathe bed, a cross beam, a sliding seat, a ram and a spindle head, wherein the side wall of the lathe bed and the bottom of a table top are respectively provided with a foot hole, and the lathe bed is provided with a hoisting position; the beam is arranged on the lathe bed and can move on the lathe bed in the X axial direction, the top of the beam is of an arch structure, and X axial motor installation cavities are arranged in two side walls of the beam parallel to the X axial direction; the sliding seat is installed in the cross beam and can move in the Y-axis direction in the cross beam, balancing cylinder installation cavities are formed in the side walls of the two flat sides of the sliding seat, and a Z-axis motor installation seat integrated with the sliding seat is arranged at the top of the side wall of one side of the sliding seat; the ram is arranged in the sliding seat and can move in the sliding seat in the Z-axis direction, and the ram is in an octahedral column shape; the main shaft head is arranged at the lower end of the ram. The invention can effectively improve the compactness of the machine tool and reduce the occupied space of the machine tool, thereby facilitating the use of operators and reducing the investment and use cost.
Description
Technical Field
The invention belongs to the technical field of numerical control machine tools, and particularly relates to a bridge type gantry machining center.
Background
The gantry machining center is equipment which is urgently needed in the modern equipment manufacturing industry, and along with the continuous growth of economy of China, the country attaches more and more importance to the development of the related industry of heavy gantry machining center projects. Gantry machines come in a variety of different types. According to whether the portal frame moves, the portal frame is divided into a portal fixed workbench moving type and a portal fixed workbench moving type; according to whether the cross beam moves on the upright post, the movable beam type and the fixed beam type are adopted; the crossbeam moves on the elevated bed and is called an elevated type; according to the net weight of the machine tool and the bearing capacity of the workbench, the machine tool is divided into light, medium and heavy (superheavy) types.
The traditional gantry machining center needs to be provided with various functional devices, the layout design of each mechanism is not compact, and the like, so that the occupied space is large, the investment cost and the operation cost are increased, and certain inconvenience is brought to the use of operators.
Disclosure of Invention
The invention aims to provide a bridge type gantry machining center to solve the problem of large occupied space.
The bridge type gantry machining center is realized as follows:
a bridge type gantry machining center comprises
The integrated lathe bed is characterized in that the side wall of the lathe bed and the bottom of the table board are respectively provided with a ground pin hole, and the inner side of the side wall of the lathe bed and the edge of the table board close to the side wall are respectively provided with a hoisting position;
the cross beam is arranged on the lathe bed and can move in the X axial direction on the lathe bed, the top of the cross beam is of an arch structure, and X axial motor installation cavities are arranged in two side walls of the cross beam parallel to the X axial direction;
the sliding seat is installed in the cross beam and can move in the Y-axis direction in the cross beam, balancing cylinder installation cavities are arranged in the side walls of the two sides of the sliding seat, which are parallel to the X-axis direction, and a Z-axis motor installation seat integrated with the sliding seat is arranged at the top of the side wall of the sliding seat, which is parallel to the Y-axis direction;
the ram is arranged in the sliding seat and can move in the sliding seat in the Z-axis direction, and the ram is in an octahedral column shape;
the spindle head is installed at the lower end of the ram.
Furthermore, a supporting cylinder penetrating through the table top is arranged above a ground foot hole in the bottom of the table top, a pouring strip hole in one side of the ground foot hole is formed in the bottom of the supporting cylinder, and a sealing cover is installed at the top of the supporting cylinder.
Furthermore, the lifting position comprises a positioning hole and mounting holes I arranged on two sides of the positioning hole.
Furthermore, an X-axis rack and an X-axis linear guide rail are mounted at the top of the side wall of the lathe bed, and the X-axis linear guide rail is positioned on the inner side of the X-axis rack;
the bottom of the cross beam is provided with an X axial sliding block matched with the X axial linear guide rail, or
An X axial gear is meshed on the X axial rack and is in transmission connection with an X axial motor installed in the X axial motor installation cavity.
Furthermore, a Y-axis rack or a Y-axis linear guide rail is arranged on the inner wall of at least one side of the cross beam parallel to the Y axis;
y axial sliding blocks matched with the Y axial linear guide rails are arranged on the outer walls of two sides of the sliding seat parallel to the Y axial direction, or
A Y-axis gear is meshed on the Y-axis rack, a Y-axis motor is mounted on the outer side wall of the sliding seat parallel to the X-axis direction, and the Y-axis gear is in transmission connection with the Y-axis motor;
and reinforcing ribs are arranged inside the side wall of the cross beam parallel to the Y axial direction and correspond to the Y axial linear guide rail.
Furthermore, the inner walls of two sides of the cross beam parallel to the X axial direction are provided with an outward sunken avoidance step I.
Further, a Z-axis motor is mounted on the outer side of the Z-axis motor mounting seat, and the output end of the Z-axis motor is connected with a Z-axis gear meshed with a Z-axis rack arranged on the ram;
z axial sliders are mounted on the inner walls of two sides of the sliding seat, which are parallel to the X axial direction, and Z axial linear guide rails matched with the Z axial sliders are mounted on the outer wall of the ram.
Furthermore, the bottom of the outer wall of the two sides of the sliding seat, which is parallel to the X axial direction, is provided with an inward concave avoidance step II.
Furthermore, a plurality of layers of rib plates are arranged in the ram, and the inner ring of each rib plate is circular;
the rib plates are provided with threading holes which correspond up and down.
Further, mounting holes II which are distributed annularly are formed in the bottom of the ram;
and an oil receiving groove positioned at the bottom of the ram is arranged at the periphery of the mounting hole II.
After the technical scheme is adopted, the invention has the beneficial effects that:
(1) the integrated lathe bed structure is adopted, so that the overall rigidity of the machining center can be effectively improved, and the safety performance during machining is improved;
(2) according to the invention, the hoisting position is arranged on the lathe bed, so that a reinforcing rib of the lathe bed does not need to be directly used as a hoisting point, the damage to the lathe bed is avoided, and the hoisting is more convenient;
(3) the invention adopts an arched beam structure, can effectively improve the strength of the beam, prevents the sagging problem of the beam when the sliding seat moves to the middle position of the beam, and ensures the normal use of a machining center;
(4) according to the invention, the X-axis motor is arranged in the sliding seat, so that the length of the lathe bed in the X-axis direction can be reduced, the compactness of the machining center is improved, and the occupied space of the machining center is reduced;
(5) according to the invention, the balance cylinder mounting cavity is arranged on the inner wall of the sliding seat, so that the stroke range of the sliding seat in the Y-axis direction can be increased, and the Y-direction length of the cross beam is correspondingly reduced, thus the structure of the machining center is more compact, and the occupied space of the machining center is further reduced;
(6) according to the invention, through the ram with the octahedral columnar structure, the occupied space of the ram can be effectively reduced, so that the structure of the machining center is more compact.
Drawings
The invention is further illustrated by the following examples in conjunction with the drawings.
FIG. 1 is a block diagram of a bridge gantry machining center in accordance with a preferred embodiment of the present invention;
FIG. 2 is a block diagram of the bed of the bridge gantry machining center according to the preferred embodiment of the present invention;
FIG. 3 is a block diagram of the bed of the bridge gantry machining center according to the preferred embodiment of the present invention;
FIG. 4 is a combined structure view of a beam, a sliding seat and a ram of a bridge gantry machining center according to a preferred embodiment of the present invention;
FIG. 5 is a structural view of a beam of a bridge gantry machining center in accordance with a preferred embodiment of the present invention;
FIG. 6 is a structural view of a beam of a bridge gantry machining center in accordance with a preferred embodiment of the present invention;
FIG. 7 is a cross-sectional view of a beam of a bridge gantry machining center in accordance with a preferred embodiment of the present invention;
FIG. 8 is a block diagram of a carriage of a bridge gantry machining center in accordance with a preferred embodiment of the present invention;
FIG. 9 is a block diagram of a carriage of the bridge gantry machining center in accordance with the preferred embodiment of the present invention;
FIG. 10 is a block diagram of a ram of a bridge gantry machining center in accordance with a preferred embodiment of the present invention;
FIG. 11 is a block diagram of a ram of a bridge gantry machining center in accordance with a preferred embodiment of the present invention;
FIG. 12 is a block diagram of a crane associated with a bridge gantry machining center in accordance with a preferred embodiment of the present invention;
in the figure: a lathe bed 1, a table 11, a processing position 11-1, a non-processing position 11-2, a ground hole 12, a hoisting position 13, a positioning hole 13-1, a mounting hole I13-2, a T-shaped groove 14, a sewage draining groove 15, a supporting cylinder 16, a casting bar hole 17, a sealing cover 18, an X-axis rack 19, an X-axis linear guide rail 110, an oil draining groove 111, a cross beam 2, an X-axis motor mounting cavity 21, an X-axis slider 22, an X-axis slider mounting position 23, a Y-axis rack 24, a Y-axis linear guide rail 25, a Y-axis linear guide rail mounting position 26, a reinforcing rib 27, an avoidance step I28, a Y-axis rack mounting position 29, a hoisting part mounting position 210, a sliding seat 3, a balance cylinder mounting cavity 31, a Z-axis motor mounting seat 32, a Y-axis slider 33, a Y-axis slider mounting position 34, a Y-axis motor 35, a Y-axis motor mounting position 36, a Z-axis motor 37, a Z-axis gear 38, the device comprises a balance cylinder 39, a Z-axis slide block mounting position 310, an avoidance step II 311, a Y-axis gear 312, a ram 4, a Z-axis rack 41, a Z-axis linear guide rail 42, a rib plate 43, a threading hole 44, a mounting hole II 45, an access cover plate 46, an oil receiving groove 47, a spindle head 5, a hoisting piece 6, a fixing plate 61, a hoisting hole 62, a hoisting frame 63 and a positioning pin 64.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
As shown in fig. 1-11, a bridge gantry machining center comprises an integrated machine body 1, a beam 2, a sliding seat 3, a ram 4 and a spindle head 5, wherein the side wall of the machine body 1 and the bottom of a table top 11 are respectively provided with a foot hole 12, the inner side of the side wall of the machine body 1 and the edge of the table top 11 close to the side wall are respectively provided with a hoisting position 13; the beam 2 is arranged on the lathe bed 1 and can move on the lathe bed 1 in the X axial direction, the top of the beam 2 is of an arch structure, and X axial motor installation cavities 21 are arranged in two side walls of the beam 2 parallel to the X axial direction; the sliding seat 3 is arranged in the cross beam 2 and can move in the Y-axis direction in the cross beam 2, the side walls of the two sides of the sliding seat 3 parallel to the X-axis direction are internally provided with a balance cylinder installation cavity 31, and the top of the side wall of one side of the sliding seat 3 parallel to the Y-axis direction is provided with a Z-axis motor installation seat 32 integrally arranged with the sliding seat 3; the ram 4 is arranged in the sliding seat 3 and can move in the sliding seat 3 in the Z-axis direction, and the ram 4 is in an octahedral column shape; the spindle head 5 is mounted on the lower end of the ram 4.
The integral lathe bed 1 can realize integral hoisting and moving, not only saves assembly time, but also can ensure the installation precision.
Specifically, the lathe bed 1, the cross beam 2 and the sliding seat 3 are of a cross rib structure, so that the strength of each part is ensured, and the weight of the whole machine tool is reduced.
Specifically, the lathe bed 1 is of a U-shaped structure, the upper surface of the table board 11 of the lathe bed comprises a processing position 11-1 and a non-processing position 11-2, wherein the processing position 11-1 is of a plane structure and is provided with a Y-axis T-shaped groove 14, and the T-shaped groove 14 is mainly used for facilitating installation of a clamp, so that a processed workpiece is fixed. Two ends of the T-shaped groove 14 are two axial sewage discharge grooves 15 which penetrate through the whole lathe bed 1X, the non-processing position 11-2 is an inclined plane structure with a high middle part and two low sides, and processing scraps and the like can be conveniently and directly fallen into the sewage discharge grooves 15, so that the tidiness of the table top 11 is ensured, and the processing efficiency is improved.
Because lathe bed 1 lateral wall is the # -shaped muscle structure, the lower margin hole 12 that is located its bottom can directly expose to be convenient for fix lathe bed 1 subaerial with the nail, then pour the nail external portion on ground can.
Because the table top 11 is used for processing products, because the foot holes 12 at the bottom of the table top 11 are hidden holes, the stability of the table top 11 and the tidiness above the table top 11 are ensured, a supporting cylinder 16 penetrating through the table top 11 is arranged above the foot holes 12 at the bottom of the table top 11, a pouring strip hole 17 at one side of the foot holes 12 is arranged at the bottom of the supporting cylinder 16, and a sealing cover 18 is installed at the top of the supporting cylinder 16.
When the table top 11 is fixed, the sealing cover 18 is opened, nails penetrate through the ground foot holes 12 downwards, then the pouring strip holes 17 are used for pouring the outside of the nails, and after the pouring is finished, the sealing cover 18 is used for sealing the supporting cylinder 16, so that the stability of the machine body 1 and the smoothness above the table top 11 are ensured.
The support cylinder 16 also provides increased support strength for the table top 11.
The existing lathe bed 1 takes the cross-shaped ribs as lifting points during lifting, so that the lathe bed 1 is easily damaged, and in the invention, the lifting position 13 comprises a positioning hole 13-1 and mounting holes I13-2 arranged at two sides of the positioning hole 13-1.
Specifically, as shown in fig. 12, the lifting position 13 is detachably provided with the lifting member 6, the lifting member 6 includes a fixing plate 61, the upper surface of the fixing plate 61 is a lifting frame 63 with a lifting hole 62, the lower surface of the fixing plate 61 is a positioning pin 64, the positioning pin 64 penetrates into the positioning hole 13-1 during installation, the fixing plate 61 is penetrated through by a screw and is installed on the installation hole i 13-2, and a lifting rope penetrates through the lifting hole 62 during lifting.
In order to realize two driving modes when the cross beam 2 moves in the X axial direction, an X axial rack 19 and an X axial linear guide rail 110 are arranged at the top of the side wall of the machine body 1.
An X-axis linear guide rail mounting position and an X-axis rack mounting position are arranged at the top of the side wall of the lathe bed 1, and the X-axis rack mounting position is located on the outer side of the X-axis linear guide rail mounting position.
If the movement of the beam 2 is realized through the X-axis linear guide 110, the X-axis slider 22 matched with the X-axis linear guide 110 is installed at the bottom of the beam 2.
Specifically, a linear motor stator is installed on one side of the X-axis linear guide rail 110, and a linear motor mover is installed in the X-axis slider, and the X-axis slider 22 can be driven to move on the X-axis linear guide rail 110 in the X-axis direction by matching the linear motor stator and the linear motor mover.
Preferably, an oil drainage groove 111 is formed inside the X-axis linear guide 110, and both ends of the oil drainage groove 111 are connected to the X-axis linear guide 110, so that the strength of the X-axis linear guide 110 can be ensured.
And the bottom of the cross beam 2 is provided with an X-axis slide block mounting position 23 which is positioned at the inner side of the X-axis motor mounting cavity 21.
If the movement of the beam 2 is realized through the X-axis rack 19, the X-axis rack 19 is engaged with an X-axis gear, and the X-axis gear is in transmission connection with an X-axis motor installed in the X-axis motor installation cavity 21.
The output shaft of X axial motor sets up down, with be located the X axial gear connection of crossbeam 2 bottom, and X axial gear meshes with X axial rack 19 to it is rotatory to drive X axial gear through X axial motor, realizes crossbeam 2 at X axial removal then with the cooperation of X axial rack 19.
Any one of the two modes can be selected for use when the beam 2 moves in the X axial direction, the two driving modes cannot be used simultaneously, and the universality of the machining center is improved. If one of the driving modes fails in subsequent use, the other driving mode can be replaced at any time, and the machining efficiency of the machining center is guaranteed.
Specifically, when the linear motor is used for driving, the X-axis rack 19 can be detached, and if the rack-and-pinion driving is adopted, the X-axis linear guide rail 110 and the X-axis slider 22 can be replaced by common linear rails and sliders, so that only a simple guiding function is achieved.
The X-axis motors of the existing machining center are all arranged outside the cross beam 2, and the occupied space is large, but in the invention, the X-axis motors are arranged in the X-axis motor installation cavity 21 inside the cross beam 2, so that the occupied space can be effectively saved, the moving stroke of the cross beam 2 in the X-axis direction is increased, and the length of the lathe bed 1 in the X-axis direction can be correspondingly reduced.
In order to realize two driving modes of the sliding seat 3 in the Y-axis direction, a Y-axis rack 24 or a Y-axis linear guide rail 25 is arranged on at least one side inner wall of the cross beam 2 parallel to the Y-axis direction.
If the movement of the carriage 3 is effected by means of the Y-axis linear guide 25,
and Y-axis sliding blocks 33 matched with the Y-axis linear guide rails 25 are arranged on the outer walls of two sides of the sliding seat 3 parallel to the Y-axis direction.
Specifically, the Y-axis linear guide rails 25 are located on the inner walls of the two sides of the cross beam 2, and at least one of the inner walls is installed at each time, and two of the inner walls are installed at each time in this embodiment. Wherein, one side of the Y-axis linear guide 25 is provided with a linear motor stator, and the Y-axis sliding block 33 is also provided with a linear motor mover matched with the linear motor stator, so that the sliding base 3 can be driven by the Y-axis sliding block 33 to move on the Y-axis linear guide 25.
Y axial slider mounting positions 34 are arranged on the outer side wall of the sliding seat 3 parallel to the Y axial direction, Y axial linear guide rail mounting positions 26 are arranged on the inner walls of two sides of the cross beam 2 parallel to the Y axial direction, two Y axial linear guide rails 25 are arranged on the inner wall of each side, and one or two Y axial linear guide rails 25 can be selectively mounted according to needs.
In order to increase the strength of the Y-axis linear guide rail, a reinforcing rib 27 is arranged inside a side wall of the cross beam 2 parallel to the Y-axis, and the reinforcing rib 27 corresponds to the Y-axis linear guide rail 25.
If the slide carriage 3 moves through the Y-axis rack 24, the Y-axis gear 312 is engaged with the Y-axis rack 24, the Y-axis motor 35 is installed on the outer side wall of the slide carriage 3 parallel to the X-axis, and the Y-axis gear 312 is in transmission connection with the Y-axis motor 35.
A Y-axis motor mounting position 36 is arranged on the outer side surface of the sliding seat 3 parallel to the X-axis direction, a Y-axis motor 34 is mounted on the mounting position through a motor support, a Y-axis rack 24 is mounted on the inner wall of one side of the cross beam 2, and a Y-axis motor 35 is mounted towards the direction of the Y-axis rack 24. The Y-axis motor 35 operates to rotate the Y-axis gear 312, so as to engage with the Y-axis rack 24 to move the slide carriage 3.
Preferably, the tooth surface of the Y-axis rack 24 is disposed upward, which can increase the supporting strength of the carriage 3.
The slide 3 can be moved in any one of the two modes, so that the universality of the machining center is improved.
Specifically, the beam 2 is parallel to the Y-axis, and the Y-axis rack mounting position 29 is arranged on the inner wall of one side of the Y-axis, and the Y-axis rack mounting position 29 is of a protruding structure, so that when the slide base 3 is driven by the linear motor, the Y-axis rack 24 is required to be detached, and the Y-axis rack mounting position 29 is required to be milled flat, so that the slide base 3 is prevented from being influenced. If the gear rack is selected to drive the sliding seat 3 to move, the common linear rail and the sliding block can be arranged on the original Y-axis linear guide rail mounting position 26 and the original Y-axis sliding block mounting position 34 to play a role in guiding and supporting.
In the invention, the Y-axis rack 24 and the Y-axis linear guide rail 25 are arranged on the inner wall of the cross beam 2, so that the space is saved, the distance between the Y-axis rack and the spindle head 5 can be shortened, and the processing precision is improved.
In addition, the beam 2 of the traditional gantry machining center also takes the reinforcing ribs 27 as grabbing points during hoisting, so that the beam 2 is easily damaged, and in the invention, hoisting part mounting positions 210 are respectively arranged at two arched ends of the top of the beam 2, so that the hoisting parts can be mounted at the hoisting part mounting positions 210 to realize the movement of the beam 2.
In order to increase the moving stroke of the sliding seat 3 in the Y-axis direction and further reduce the width of the machining center in the Y-axis direction, two side inner walls of the cross beam 2 parallel to the X-axis direction are provided with an outward concave avoidance step I28.
In order to drive the ram 4 to move in the Z-axis direction, a Z-axis motor 37 is mounted on the outer side of the Z-axis motor mounting seat 32, and a Z-axis gear 38 engaged with a Z-axis rack 41 arranged on the ram 4 is connected to an output end of the Z-axis motor 37.
The Z-axis motor mounting seat 32 integrated with the sliding seat 3 can improve the strength of the sliding seat 3, reduce the mounting difficulty and reduce the waste of space.
And a balance cylinder 39 arranged in the Z-axis direction is installed in the balance cylinder installation cavity 31 and used for offsetting the gravity of the ram 4 in the lifting process.
In order to guide the movement of the ram 4, Z-axial sliders are mounted on the inner walls of two sides of the sliding seat 3 parallel to the X-axial direction, and Z-axial linear guide rails 42 matched with the Z-axial sliders are mounted on the outer wall of the ram 4.
The slide 3 leaves Z axial slider installation position 310 that is used for installing the Z axial slider on being on a parallel with X axial both sides inner wall, and the Z axial slider adopts the mode of adorning outward, installs from the lateral surface of slide 3 promptly, simplifies the installation degree of difficulty.
The Z-axis linear guide 42 is different from the X-axis linear guide 110 and the Y-axis linear guide 25 in that it does not cooperate with the linear motor stator, and the Z-axis slider is also not cooperate with the linear motor mover, so that the Z-axis linear guide 42 and the Z-axis slider only have a guiding function and do not have a driving function.
Preferably, the Z-axis linear guide rails 42 are symmetrically installed at the concave parts of the outer side surface of the ram 4, so that the space can be further saved.
In order to increase the moving stroke of the sliding seat 3 in the Y axial direction, the bottom parts of the outer walls of the two sides of the sliding seat 3 parallel to the X axial direction are provided with an inward concave avoidance step II 311.
In order to increase the strength of the ram 4, a plurality of layers of rib plates 43 are arranged in the ram 4, and the inner ring of each rib plate 43 is circular.
Because each pipeline connected with the spindle head 5 penetrates through the ram 4, and the inner ring of the rib plate 43 is of a circular structure, the abrasion of a pipeline sleeve can be reduced, and the normal use of a machining center is ensured.
One part of the pipeline connected with the main shaft head is a movable pipeline, one part of the pipeline is a fixed pipeline, if two pipelines are placed together, the pipelines are easily wound in a mess, and are easy to damage, and the like, and in order to arrange the fixed pipelines connected with the main shaft head at certain positions, the rib plate 43 is provided with the threading holes 44 which correspond up and down.
The fixed pipeline passes through the threading hole 44, and the movable pipeline directly passes through the inner ring of the rib plate 43.
In order to increase the universality of the ram 4 on various spindle heads 5, the bottom of the ram 4 is provided with mounting holes II 45 which are distributed annularly.
Spindle heads 5 of different specifications or models can be directly fixed on the mounting hole II 45, or a layer of connecting plate is additionally arranged on the mounting hole II 45 to be matched with the spindle heads 5, so that the universality of the spindle heads 5 is improved.
And an access hole is formed in the side wall of the ram 4 parallel to the Y-axis direction, an embedded access cover plate 46 is installed on the access hole, and the access cover plate 46 is fixed through screws.
The access panel 46 adopts embedded structure, and the access panel 46 flushes with the surface of ram 4 after the installation is accomplished, can reduce the occupation space of ram 4 like this to through the setting of access panel 46, can effectively increase the rigidity of access hole department.
In order to collect oil flowing out of the ram 4, an oil receiving groove 47 located at the bottom of the ram 4 is installed on the periphery of the installation hole II 45.
The gantry machining center provided by the invention has a compact structure, saves space, can be conveniently used by operators, has good general performance, and reduces the investment and use cost.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (9)
1. A bridge type gantry machining center is characterized by comprising
The integrated machine tool body (1) is characterized in that a ground pin hole (12) is formed in the side wall of the machine tool body (1) and the bottom of the table board (11), and hoisting positions (13) are formed in the inner side of the side wall of the machine tool body (1) and the edge, close to the side wall, of the table board (11);
the X-axis motor installing structure comprises a cross beam (2), wherein the cross beam (2) is installed on a machine body (1) and can move on the machine body (1) in the X-axis direction, the top of the cross beam (2) is of an arch structure, X-axis motor installing cavities (21) are formed in the side walls, parallel to the X-axis direction, of the two sides of the cross beam (2), and openings of the X-axis motor installing cavities (21) are formed in the tops of the side walls of the cross beam (2);
the sliding seat (3) is installed in the cross beam (2) and can move in the Y-axis direction in the cross beam (2), balancing cylinder installation cavities (31) are formed in the side walls of the two sides of the sliding seat (3) parallel to the X-axis direction, and a Z-axis motor installation seat (32) integrally arranged with the sliding seat (3) is arranged at the top of the side wall of one side of the sliding seat (3) parallel to the Y-axis direction;
the ram (4) is installed in the sliding seat (3) and can move in the Z-axis direction in the sliding seat (3), and the ram (4) is in an octahedral column shape;
a plurality of layers of rib plates (43) are arranged in the ram (4), and the inner ring of each rib plate (43) is circular; the rib plates (43) are provided with threading holes (44) which correspond up and down; the fixed pipeline passes through the threading hole (44), and the movable pipeline passes through the inner ring of the rib plate (43);
the main shaft head (5), the main shaft head (5) is installed at the lower end of the ram (4);
a supporting cylinder (16) penetrating through the table top (11) is arranged above the ground foot hole (12) in the bottom of the table top (11), and an arc-shaped pouring strip hole (17) located on one side of the ground foot hole (12) is formed in the bottom of the supporting cylinder (16).
2. Bridge gantry machining center according to claim 1, characterized in that a cover (18) is mounted on top of the support cylinder (16).
3. Bridge gantry machining center according to claim 1, characterized in that the hoisting location (13) comprises a location hole (13-1) and mounting holes i (13-2) arranged on both sides of the location hole (13-1).
4. Bridge gantry machining center according to claim 1,
an X-axis rack (19) and an X-axis linear guide rail (110) are mounted at the top of the side wall of the lathe bed (1), and the X-axis linear guide rail (110) is located on the inner side of the X-axis rack (19);
the bottom of the cross beam (2) is provided with an X axial sliding block (22) matched with the X axial linear guide rail (110), or
An X axial gear is meshed on the X axial rack (19), and the X axial gear is in transmission connection with an X axial motor installed in the X axial motor installation cavity (21).
5. A bridge gantry machining center according to claim 1, wherein a Y-axis rack (24) or a Y-axis linear guide (25) is mounted on at least one side inner wall of the cross beam (2) parallel to the Y-axis;
y-axis sliding blocks (33) matched with the Y-axis linear guide rails (25) are arranged on the outer walls of two sides of the sliding seat (3) parallel to the Y-axis direction, or
A Y-axis gear (312) is meshed on the Y-axis rack (24), a Y-axis motor (35) is mounted on the outer side wall of the sliding seat (3) parallel to the X-axis direction, and the Y-axis gear (312) is in transmission connection with the Y-axis motor (35);
the cross beam (2) is parallel to the inner part of the side wall in the Y-axis direction and is provided with a reinforcing rib (27), and the reinforcing rib (27) corresponds to the linear guide rail (25) in the Y-axis direction.
6. A bridge gantry machining center according to claim 1, wherein two inner walls of the cross beam (2) parallel to the X-axis direction are provided with an outward concave avoidance step i (28).
7. A bridge gantry machining center according to claim 1, wherein a Z-axis motor (37) is installed outside the Z-axis motor installation seat (32), and an output end of the Z-axis motor (37) is connected with a Z-axis gear (38) engaged with a Z-axis rack (41) arranged on the ram (4);
z axial sliders are mounted on the inner walls of two sides of the sliding seat (3) in a direction parallel to the X axis, and Z axial linear guide rails (42) matched with the Z axial sliders are mounted on the outer wall of the ram (4).
8. A bridge gantry machining center according to claim 1, wherein the bottom of the outer wall of the two sides of the sliding base (3) parallel to the X-axis direction is provided with an inward concave avoidance step ii (311).
9. A bridge gantry machining center according to claim 1, wherein the bottom of the ram (4) is provided with mounting holes ii (45) distributed annularly;
and an oil receiving groove (47) which is positioned at the bottom of the ram (4) is arranged on the periphery of the mounting hole II (45).
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