CN210677766U - Vertical machining center with automatic bridge plate exchange function - Google Patents

Vertical machining center with automatic bridge plate exchange function Download PDF

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Publication number
CN210677766U
CN210677766U CN201921094418.8U CN201921094418U CN210677766U CN 210677766 U CN210677766 U CN 210677766U CN 201921094418 U CN201921094418 U CN 201921094418U CN 210677766 U CN210677766 U CN 210677766U
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China
Prior art keywords
bridge plate
exchange
exchange arm
plate
machining center
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CN201921094418.8U
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Chinese (zh)
Inventor
姜辉
许普生
姜安奇
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Shanghai Daqiao Yuyuan Precision Machinery Co.,Ltd.
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Shanghai Daqiao Yuyuan Precision Machinery Co ltd
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Abstract

The utility model provides a vertical machining center of bridge plate automatic switching, relates to the vertical machining center field, includes: the external bridge plate is arranged on the supporting mechanism and can be vertically separated from the supporting mechanism; the inner bridge plate is fixed and separated up and down through a locking mechanism; the spindle box is arranged on the upright post, and a spindle is vertically arranged on the spindle box; a lifting rotating mechanism between the external bridge plate and the internal bridge plate, wherein a mounting plate is fixed on the lifting rotating mechanism; the driving assembly can push the exchange arm to do reciprocating linear movement; the exchange arm can lift and rotate for at least 180 degrees in a horizontal plane; clamping and embedding structures for mutual movable fixation are arranged between the two ends of the exchange arm and the outer bridge plate and between the two ends of the exchange arm and the inner bridge plate; one end of the exchange arm close to the outer bridge plate is positioned below the outer bridge plate. The application provides a vertical machining center of bridge plate automatic exchange realizes that the bridge plate is automatic to be changed, can improve machining efficiency, more is fit for the automatic change that the bridge plate both ends have under the circumstances of blockking.

Description

Vertical machining center with automatic bridge plate exchange function
Technical Field
The utility model relates to a vertical machining center field, concretely relates to vertical machining center of bridge plate automatic exchange, especially be fit for the bridge plate both ends have the vertical machining center of a bridge plate automatic exchange under the circumstances of blockking.
Background
In the existing machining center, the size of a workpiece machined on the bridge plate is not large, so that the machining time is short generally, and the time occupied by clamping the workpiece onto the bridge plate is large in the whole machining process, so that the machining efficiency is greatly reduced.
In addition, in many practical situations, the two ends of the bridge plate are connected and mounted on some mechanical structures, which form a barrier to the bridge plate from the two ends, such as a numerical control turntable and a disk tailstock, where the two ends of the bridge plate are mounted in a machining center, and the bridge plate is sandwiched between the numerical control turntable and the disk tailstock, some existing exchange mechanisms are not suitable when facing the bridge plate exchange problem in such a situation, and are specifically as follows:
1. shuttle type (reciprocating type)
The exchange platform is provided with two groups of parallel rails and two sets of driving devices, and the workbench needing to be exchanged translates on the rails. One set of driving mechanism firstly drags the working table out along the rail, and then the other set of driving mechanism pushes the working table in the machine along the other set of rail. And one out and one in completes the workbench exchange. The two tables are operated separately rather than simultaneously.
2. Rotary double fork
This is the most common one at present, faster and more stable than the reciprocating exchange, where the exchange has a double-fork (double U) rotating carriage, where one U-fork is located within the table stroke range. When the exchange is needed, the working tables reach the designated positions in the U-shaped forks, the lifting mechanism in the exchange table drives the brackets to lift the two working tables simultaneously, the rotating mechanism drives the brackets to rotate 180 degrees to change the positions of the working tables, and then the brackets fall down to complete the exchange.
3. Rotary hook type
The exchange mode is that the exchange platform is provided with a double-end hook plate, the side surfaces of the two working platforms are provided with grooves, and when the exchange is needed, the hook plate picks up the working platforms from the side edges of the two working platforms. The workbench exchange is completed under the driving of the lifting device and the rotating device in the exchange platform. For example, publication number CN106670830A, named: the invention relates to a Chinese authorization invention of a transverse workbench exchange rack.
Due to structural limitation, the exchange mechanisms are all used for exchanging the workbench, and no object is blocked around the workbench, and only the bottom of the workbench is connected with the machine tool main body; in the case of the replacement of the bridge plate with the barriers at both ends of the bridge plate as described above, the above-mentioned exchange mechanism interferes with the barriers and is obviously not usable.
SUMMERY OF THE UTILITY MODEL
In order to solve one of the problems that exist among the above-mentioned prior art at least, this application provides a vertical machining center of bridge plate automatic exchange, realizes that the bridge plate is automatic to be changed, can improve machining efficiency, more is fit for the automatic change under the bridge plate both ends have the circumstances of blockking.
In order to realize the technical effect, the utility model discloses a concrete technical scheme as follows:
a vertical machining center with automatic bridge plate exchange comprises:
an outer bridge plate above the exchange table, the outer bridge plate being mounted to and vertically separable from the support mechanism on the exchange table;
the machine inner bridge plate can move horizontally above the machine tool base and is fixed and separated up and down through a locking mechanism below the machine inner bridge plate; the external bridge plate and the internal bridge plate are used for clamping workpieces;
the vertical column is arranged on one side of the base of the machine tool, one or more than two spindle boxes which move up and down are arranged on the vertical column, and one or more than two spindles are vertically arranged on each spindle box;
a lifting rotating mechanism between the external bridge plate and the internal bridge plate, wherein a mounting plate is fixed on the lifting rotating mechanism;
the driving component is arranged above the mounting plate and can push the exchange arm to do reciprocating linear movement along the length direction of the exchange arm;
the exchange arm can lift and rotate at least 180 degrees in the horizontal plane under the action of the lifting and rotating mechanism; the two ends of the exchange arm, the external bridge plate and the internal bridge plate are provided with adaptive clamping and embedding structures for mutual movable fixation;
before the exchange of the external bridge plate and the internal bridge plate, one end of the exchange arm close to the external bridge plate is positioned below the external bridge plate.
Furthermore, two ends of the inner bridge plate are provided with blocking structures for preventing the exchange arm from rotating to pass through.
Furthermore, the blocking structure is at least two locking mechanisms which are distributed on two sides below the inner axle plate. The locking mechanism has the functions of fixing and loosening the inner bridge plate, and prevents the exchange arm from rotating to pass through when being distributed on two sides below the inner bridge plate.
Furthermore, the blocking structure comprises a numerical control rotary table and a disc tailstock, and the numerical control rotary table and the disc tailstock are respectively connected with two ends of the inner bridge plate. The numerical control rotary table and the disc tailstock form a structure for preventing the exchange arm from rotating and passing through, the numerical control rotary table is matched with the disc tailstock to enable the inner bridge plate to rotate by 360 degrees, workpieces clamped on the inner bridge plate can be machined in multiple faces, and the structure is applied to machining centers.
Further, the clamping and embedding structures on the inner bridge plate are located between the blocking structures at two ends of the inner bridge plate.
Furthermore, the clamping structure comprises grooves arranged at two ends of the exchange arm, protrusions correspondingly arranged on the inner bridge plate and the outer bridge plate or protrusions arranged at two ends of the exchange arm, and grooves correspondingly arranged on the inner bridge plate and the outer bridge plate.
Furthermore, the supporting mechanism is two supporting plates or two support columns or two supports distributed on two sides of the exchange platform, and the external bridge plate is lapped on the two supporting plates or the two support columns or the two supports.
Furthermore, locking mechanical system includes fixed pin, hydraulic pressure locking device, and this fixed pin is fixed in the built-in axle board bottom, and hydraulic pressure locking device is for playing the device of pinning, loosening the fixed pin with the fixed pin adaptation.
Furthermore, the driving assembly comprises a guide rail, a sliding block and an oil cylinder, the guide rail is arranged on the bottom surface of the exchange arm along the length direction of the exchange arm, and the sliding block is fixed on the mounting plate; one end of the oil cylinder is fixed on the bottom surface of the exchange arm, the other end of the oil cylinder is fixed on the mounting plate, and the telescopic direction of the oil cylinder is the same as the extending direction of the guide rail.
Further, the device also comprises a detection switch for detecting that the middle point of the exchange arm moves to the position right above the axis of the rotating shaft of the lifting rotating mechanism, and the detection switch is connected with the driving component. The middle point of the exchange arm refers to the middle point or the middle line in the length direction of the exchange arm, when the middle point of the exchange arm moves to the position right above the axis of the rotating shaft of the lifting rotating mechanism, the detection switch sends out a signal, the driving assembly stops driving the exchange arm, the exchange arm can perform subsequent lifting, rotation and the like, and the moving accuracy and the moving efficiency of the exchange arm are improved.
The concrete working process of the vertical machining center with the automatic bridge plate exchange is as follows:
firstly, the replacement process of the internal bridge plate and the external bridge plate is as follows:
after the workpieces on the inner bridge plate are machined, the inner bridge plate moves to a position to be exchanged, which is closest to an exchange table, the inner bridge plate is located between the numerical control rotary table and the disc tailstock, and the exchange table is tightly attached to the outer side of the machine tool base. At the moment, the exchange arm is pushed by the oil cylinder from the initial position to be linearly close to the inner bridge plate until the grooves at the two ends of the exchange arm are positioned under the corresponding matched bulges of the outer bridge plate and the inner bridge plate, the midpoint of the exchange arm is just positioned at the axle center of the rotating shaft of the lifting rotating mechanism, then the exchange arm is lifted upwards along with the mounting plate to enable the bulges of the inner bridge plate and the outer bridge plate to enter the grooves at the two ends of the exchange arm, the two ends of the exchange arm are movably fixed with the outer bridge plate and the inner bridge plate, then the hydraulic locking device loosens the fixing pin, the exchange arm drives the inner bridge plate and the outer bridge plate to continuously rise to a height, the fixing pin is completely separated from the hydraulic locking device, then the exchange arm rotates 180 degrees, the positions of the inner bridge plate and the outer bridge plate are exchanged, the inner bridge plate where the processed workpiece is positioned is moved out of the machine, the outer bridge plate where the blank is positioned in the machine, meanwhile, after the fixing pin below the original external bridge plate is inserted into the hydraulic locking device, the exchange arm continues to descend after the hydraulic locking device locks the fixing pin, so that the protrusions of the original internal bridge plate and the original external bridge plate are completely separated from the grooves at the two ends of the exchange arm, and finally the exchange arm moves in the direction far away from the original external bridge plate and returns to the initial position of the exchange arm, thereby completing the whole process of replacing the bridge plate. After the exchange arm moves to the initial position far away from the original external bridge plate, the numerical control turntable and the disc tailstock move to any position above the machine tool base, and the numerical control turntable and the disc tailstock cannot interfere with the exchange arm, so that the working stroke range of a machining center host is not influenced.
If the ascending stroke of the rotating shaft of the lifting and rotating mechanism is limited, the ascending height of the exchange arm with the inner bridge plate and the outer bridge plate is lower than the height of the numerical control rotary table and the height of the disc tailstock after the inner bridge plate and the outer bridge plate are lifted, at the moment, the numerical control rotary table and the disc tailstock need to move in the direction away from the exchange table to avoid interference, and then the exchange arm returns to the position to be exchanged, which is closest to the exchange table; if the lifting stroke of the rotating shaft of the lifting and rotating mechanism is large enough, the lifting height of the exchange arm, the inner bridge plate and the outer bridge plate exceeds the height of the numerical control turntable and the disc tailstock, the numerical control turntable and the disc tailstock can directly rotate and exchange without moving to a position far away from the exchange platform.
Secondly, a workpiece machining process of the vertical machining center is as follows:
the internal bridge plate and the external bridge plate are equivalent to a 'workbench' and are used for clamping workpieces; the two main shafts are driven to rotate by the cutter, two workpieces on the inner bridge plate are processed simultaneously, after the two workpieces are processed, the inner bridge plate moves for a certain distance, and the two main shafts process the other two workpieces on the inner bridge plate; after one direction of all the workpieces on the inner bridge plate is processed, the numerical control rotary table drives the inner bridge plate to rotate by an angle, the same operation is repeated until the workpieces are processed, and then the inner bridge plate and the outer bridge plate are replaced.
According to the technical scheme, the utility model discloses can realize the automatic change of built-in bridge plate, the bridge plate is automatic to be changed outside the machine, especially has the bridge plate under the circumstances that blocks at the bridge plate (be built-in bridge plate, one of the bridge plate outside the machine at least) both ends, through clamping good work piece in advance on the bridge plate outside the machine, after the work piece processing on machining center (lathe), through the utility model discloses the automatic change of built-in bridge plate, the bridge plate outside the machine is accomplished to the device, can directly continue to carry out work piece processing, and is gone round and over, has improved machining efficiency greatly; in addition, the upright post is provided with a plurality of main shafts which are used for processing simultaneously, and the processing of a plurality of machine tools can be realized by using the floor area of one machine tool, so that the processing efficiency is improved in a multiplied way; the utility model discloses a lathe simple structure is reliable, and the price/performance ratio is high, has considerable economic value and social value.
Drawings
The present application will be described in further detail below with reference to the accompanying drawings by way of specific embodiments.
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic view of a part of the connection among the exchange, the lifting/lowering mechanism, and the driving assembly of the present invention;
FIG. 3 is a schematic view of the connection of the inner bridge plate, the locking mechanism, the exchange arm, and the disk tailstock;
fig. 4 is a schematic view of a state of the driving assembly according to the present invention;
fig. 5 is a schematic view of another state of the driving assembly according to the present invention;
FIG. 6 is a schematic view of the present invention showing the grooves at the two ends of the exchange arm under the protrusions;
FIG. 7 is a schematic view of the middle-sized inner bridge plate and the outer bridge plate of the present invention when they are lifted;
fig. 8 is another schematic view of the locking mechanism of the present invention;
wherein, 1, an exchange platform; 2. an external bridge plate; 3. a machine tool base; 4. an inner bridge plate; 5. a workpiece; 6. a platform; 7. a saddle; 8. a lifting and rotating mechanism; 9. mounting a plate; 10. an exchange arm; 11. a groove; 12. a protrusion; 13. a support plate; 14. a fixing pin; 15. a hydraulic locking device; 16. a jack; 17. a guide rail; 18. a slider; 19. an oil cylinder; 20. a numerical control turntable; 21. a disc tailstock; 22. an L-shaped connecting plate; 23. a Y-axis guide rail; 24. a main shaft; 25. an X-axis guide rail; 26. a column; 27. a main spindle box; 28. a Z-axis guide rail; 29. a taper sleeve; 291. pulling nails; 30. a tapered pin; 301. a central bore.
Detailed Description
In order to make the objects, technical solutions and advantages of the present embodiments more clear, the technical solutions in the present embodiments will be described clearly and completely below with reference to the accompanying drawings in the present embodiments, and it is obvious that the described embodiments are some embodiments of the present application, but 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 any creative effort belong to the protection scope of the present application.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Example one
The embodiment provides a vertical machining center with automatic bridge plate exchange, which has the following technical scheme:
referring to fig. 1, a vertical machining center with automatic exchange of bridge plates includes:
an outer bridge plate 2 above the exchange board 1, the outer bridge plate 2 being mounted to and vertically separable from a support mechanism on the exchange board 1;
an inner bridge plate 4 which can move horizontally is arranged above the machine tool base 3, and the inner bridge plate 4 is fixed and separated up and down through a locking mechanism below the inner bridge plate 4; the external bridge plate 2 and the internal bridge plate 4 are used for clamping a workpiece 5; the machine tool base 3 is provided with a set of Y-axis guide rails 23 in the horizontal direction, the Y-axis guide rails 23 are parallel to the axial lead direction of a main shaft 24, a bed saddle 7 is arranged above the Y-axis guide rails 23, the bed saddle 7 is provided with a set of X-axis guide rails 25, the horizontal direction of the X-axis guide rails 25 is vertical to the Y-axis guide rails 23, a platform 6 is arranged above the X-axis guide rails 25, and the machine bridge plate 4 and a locking mechanism are arranged on the platform 6;
a vertical column 26 installed on one side of the machine tool base 3, wherein one or more than two spindle boxes 27 moving up and down are arranged on the vertical column 26, in the embodiment, two spindle boxes 27 moving up and down are preferably arranged on the vertical column 26, one or more than two spindles 24 are vertically installed on each spindle box 27, and in the embodiment, one spindle 24 is preferably installed on each spindle box 27; the upright column 26 may be movably mounted on the machine tool base 3, or may be fixedly mounted on the machine tool base 3, and in order to improve the stability of the upright column 26, the present embodiment is preferably fixedly mounted on the machine tool base 3; wherein each headstock 27 is movable up and down, in particular by sliding along a set of Z-axis guides 28 on the column 26.
A lifting and rotating mechanism 8 between the external bridge plate 2 and the internal bridge plate 4 is fixed with a mounting plate 9, wherein the lifting and rotating mechanism 8 is a product of the prior art, the rotating shaft of which can realize lifting and rotating, and the mounting position of the lifting and rotating mechanism 8 is not limited, and the lifting and rotating mechanism can be mounted on the machine tool base 3 (for example, a section extending from the outer side of the machine tool base 3 without interference machining) or on the exchange platform 1, and the embodiment is preferably mounted on the exchange platform 1;
a driving component above the mounting plate 9, which can drive the exchange arm 10 to make reciprocating linear movement along the length direction of the exchange arm;
the exchange arm 10, the exchange arm 10 can go up and down and make at least 180 degrees of rotation in the horizontal plane under the function of lifting and rotating mechanism 8; the two ends of the exchange arm 10, the external bridge plate 2 and the internal bridge plate 4 are provided with adaptive clamping and embedding structures for mutual movable fixation;
before the exchange of the external bridge plate 2 and the internal bridge plate 4, one end of the exchange arm 10 close to the external bridge plate 2 is positioned below the external bridge plate 2.
The clamping and embedding structure comprises grooves 11 arranged at two ends of an exchange arm 10 and protrusions 12 correspondingly arranged on an internal bridge plate 4 and an external bridge plate 2, wherein the protrusions 12 are vertically inserted into the grooves 11 to fix the internal bridge plate 4 and the external bridge plate 2 with the exchange arm 10, the positions of the protrusions 12 are not limited, and can be in the bottom surfaces of the internal bridge plate 4 and the external bridge plate 2 or the side surfaces of the internal bridge plate 4 and the external bridge plate 2, and in order to shorten the stroke of the exchange arm 10, improve the working efficiency and reduce the size of the exchange arm 10, the protrusions 12 are preferably arranged on the side surfaces of the internal bridge plate 4 and the external bridge plate 2; the clamping structure can also adopt other structures for realizing the same function, for example, two ends of the exchange arm are provided with bulges, and the corresponding inner bridge plate and the outer bridge plate are provided with grooves.
The supporting mechanism is two supporting plates 13 distributed on two sides of the exchange platform 1, the outer bridge plate 2 is lapped on the two supporting plates 13, and the two supporting plates 13 can be integrated with the exchange platform 1 or can be independently arranged and then installed on the exchange platform 1; in order to make the external bridge plate 2 on the supporting plate 13 slightly stable when being lapped, a magnet (magnet) or a metal sheet and the like can be arranged on the supporting plate 13, the metal sheet or the magnet (magnet) and the like are arranged at the corresponding position of the bottom surface of the external bridge plate 2, and the metal sheet or the magnet (magnet) and the like can also be arranged at the corresponding position of the bottom surface of the internal bridge plate 4; in addition, the supporting plate 13 may be replaced with a structure such as a pillar or a bracket.
Referring to fig. 3, the locking mechanism includes a fixing pin 14 and a hydraulic locking device 15, the fixing pin 14 is fixed at the bottom end of the internal bridge plate 4, in order to complete the replacement of the internal bridge plate 4 and the external bridge plate 2, of course, the fixing pin 14 is also arranged at the same position of the external bridge plate 2, the hydraulic locking device 15 is a device which is matched with the fixing pin 14 and plays a role in locking and releasing the fixing pin 14, the hydraulic locking device 15 is provided with an insertion hole 16 matched with the fixing pin 14, wherein the hydraulic locking device 15 is a prior art product, for example, a zero point locator of german AMF brand, No.6370EARHA is adopted; the locking mechanism can also adopt other prior art products for realizing the same function, as shown in fig. 8, a taper sleeve 29 is arranged at the bottom end of the inner bridge plate 4, a pull nail 291 is arranged in the center of the taper sleeve 29, a taper pin 30 is a device matched with the taper sleeve 29 and used for fixing and releasing the taper sleeve 29, and a pull claw (not shown) is arranged in a center hole 301 of the taper pin 30 and used for pulling the pull nail 291. When the device works, the taper sleeve 29 at the bottom end of the inner axle plate 4 falls on the taper pin 30, meanwhile, the rivet 291 in the middle of the taper sleeve 29 is inserted into the central hole 301 of the taper pin 30, the rivet 291 is pulled downwards by the pull claw in the central hole 301, so that the taper sleeve 29 is tightly combined with the taper pin 30, and hydraulic unlocking is adopted when the taper sleeve 29 is loosened by the taper pin 30.
Referring to fig. 2, 4 and 5, the driving assembly includes a guide rail 17, a slider 18 and an oil cylinder 19, the guide rail 17 is mounted on the bottom surface of the exchange arm 10 along the length direction of the exchange arm 10, and the slider 18 is fixed on the mounting plate 9; one end of the oil cylinder 19 is fixed on the bottom surface of the exchange arm 10, the other end is fixed on the mounting plate 9, and the extension direction of the oil cylinder is the same as the extension direction of the guide rail 17. In addition, the oil cylinder 19 can also be replaced by a mechanism that a motor drives a screw rod or a motor drives a gear rack, so as to realize pushing of the exchange arm, and the specific technical content is a known technology for those skilled in the art and is not detailed here.
Example two
The embodiment particularly provides a vertical machining center for automatically exchanging bridge plates under the condition that two ends of the bridge plate are blocked, and the technical scheme is as follows:
as shown in fig. 1, a vertical machining center with an automatic bridge exchange function includes:
an outer bridge plate 2 above the exchange board 1, the outer bridge plate 2 being mounted to and vertically separable from a support mechanism on the exchange board 1;
an inner bridge plate 4 which can move horizontally is arranged above the machine tool base 3, and the inner bridge plate 4 is fixed and separated up and down through a locking mechanism below the inner bridge plate 4; the external bridge plate 2 and the internal bridge plate 4 are used for clamping a workpiece 5; the machine tool base 3 is provided with a set of Y-axis guide rails 23 in the horizontal direction, the Y-axis guide rails 23 are parallel to the axial lead direction of a main shaft 24, a bed saddle 7 is arranged above the Y-axis guide rails 23, the bed saddle 7 is provided with a set of X-axis guide rails 25, the horizontal direction of the X-axis guide rails 25 is vertical to the Y-axis guide rails 23, a platform 6 is arranged above the X-axis guide rails 25, and the machine bridge plate 4 and a locking mechanism are arranged on the platform 6; the two ends of the built-in bridge plate 4 are connected with a numerical control rotary table 20 and a disc tailstock 21, the numerical control rotary table 20 and the disc tailstock 21 prevent the exchange arm 10 from rotating to pass through, and a bulge 12 on the built-in bridge plate 4 is located between the numerical control rotary table 20 and the disc tailstock 21, wherein the built-in bridge plate 4 is respectively connected with the numerical control rotary table 20 and the disc tailstock 21 through L-shaped connecting plates 22 on two sides, and the numerical control rotary table 20 and the disc tailstock 21 are installed on the platform 6.
A vertical column 26 fixedly arranged on one side of the machine tool base 3, wherein two spindle boxes 27 moving up and down are arranged on the vertical column 26, and each spindle box 27 is vertically provided with a spindle 24;
a lifting and rotating mechanism 8 is arranged between the outer bridge plate 2 and the inner bridge plate 4, the lifting and rotating mechanism 8 is arranged on the exchange platform 1, and an installation plate 9 is fixed on the lifting and rotating mechanism 8;
a driving component above the mounting plate 9, which can drive the exchange arm 10 to make reciprocating linear movement along the length direction of the exchange arm;
the exchange arm 10, the exchange arm 10 can go up and down and make at least 180 degrees of rotation in the horizontal plane under the function of lifting and rotating mechanism 8; the two ends of the exchange arm 10, the external bridge plate 2 and the internal bridge plate 4 are provided with adaptive clamping and embedding structures for mutual movable fixation;
before the exchange of the external bridge plate 2 and the internal bridge plate 4, one end of the exchange arm 10 close to the external bridge plate 2 is positioned below the external bridge plate 2. At this time, the exchange arm 10 is in the initial position before the exchange of the external bridge plate 2 and the internal bridge plate 4, and the whole exchange arm 10, especially the end of the exchange arm 10 far away from the external bridge plate 2, cannot interfere with the whole machining process of the machine tool.
The clamping and embedding structure comprises grooves 11 arranged at two ends of the exchange arm 10 and protrusions 12 correspondingly arranged on the inner bridge plate 4 and the outer bridge plate 2, and the protrusions 12 are vertically inserted into the grooves 11 to fix the inner bridge plate 4, the outer bridge plate 2 and the exchange arm 10.
Wherein, the supporting mechanism is two supporting plates 13 distributed on two sides of the exchange platform 1, and the outer bridge plate 2 is lapped on the two supporting plates 13. Before the exchange of the external bridge plate 2 and the internal bridge plate 4, when the exchange arm 10 is located at the initial position, one end of the exchange arm 10 close to the external bridge plate 2 is located below the external bridge plate 2 and between the two support plates 13, and at this time, the two support plates 13 not only support the external bridge plate 2, but also form a barrier on two sides of the exchange arm 10, so that the exchange arm 10 cannot rotate to pass through.
As shown in fig. 3, the locking mechanism includes a fixing pin 14 and a hydraulic locking device 15, the fixing pin 14 is fixed at the bottom end of the internal axle plate 4, in order to complete the replacement of the internal axle plate 4 and the external axle plate 2, of course, the fixing pin 14 is also arranged at the same position of the external axle plate 2, the hydraulic locking device 15 is a device which is adapted to the fixing pin 14 and plays a role in locking and releasing the fixing pin 14, the hydraulic locking device 15 is provided with an insertion hole 16 matched with the fixing pin 14, wherein the hydraulic locking device 15 is a prior art product and is installed on the L-shaped connecting plate 22.
As shown in fig. 2, 4 and 5, the driving assembly includes a guide rail 17, a slider 18 and an oil cylinder 19, the guide rail 17 is mounted on the bottom surface of the exchange arm 10 along the length direction of the exchange arm 10, and the slider 17 is fixed on the mounting plate 9; one end of the oil cylinder 19 is fixed on the bottom surface of the exchange arm 10, the other end is fixed on the mounting plate 9, and the extension direction of the oil cylinder is the same as the extension direction of the guide rail 17. In addition, the oil cylinder 19 can also be replaced by a mechanism that a motor drives a screw rod or a motor drives a gear rack, so as to realize pushing of the exchange arm, and the specific technical content is a known technology for those skilled in the art and is not detailed here.
The difference between the first embodiment and the second embodiment is that the two sides of the inner bridge plate 4 are connected with the numerical control turntable 20 and the disk tailstock 21, and the numerical control turntable 20 and the disk tailstock 21 form a barrier for the two sides of the exchange arm 10, and the specific working process is as follows:
firstly, the replacement process of the internal bridge plate 4 and the external bridge plate 2 is as follows: as shown in fig. 1, after the workpiece 5 on the inner bridge plate 4 is machined, the inner bridge plate 4 moves to a position to be exchanged, which is closest to the exchanging station 1, the inner bridge plate 4 is located between the numerical control turntable 20 and the disc tailstock 21, and the exchanging station 1 is tightly attached to the outer side of the machine tool base 3. At the moment, the exchange arm 10 is pushed by the oil cylinder 19 from the initial position to be linearly close to the internal bridge plate 4 until the grooves 11 at the two ends of the exchange arm 10 are positioned under the correspondingly matched bulges 12 of the external bridge plate 2 and the internal bridge plate 4, as shown in fig. 6, the midpoint of the exchange arm 10 is just positioned at the axis of the rotating shaft of the lifting rotating mechanism 8, then the exchange arm 10 is lifted upwards along with the mounting plate 9, so that the bulges 12 of the internal bridge plate 4 and the external bridge plate 2 enter the grooves 11 at the two ends of the exchange arm 10, the two ends of the exchange arm 10 are movably fixed with the external bridge plate 2 and the internal bridge plate 4, then the hydraulic locking device 15 releases the fixing pin 14, as shown in fig. 7, the exchange arm 10 with the internal bridge plate 4 and the external bridge plate 2 continuously rises to a certain height, at the moment, the fixing pin 14 is completely separated from the hydraulic locking device 15, then the exchange arm 10 rotates 180 degrees, and the, the inner bridge plate 4 where the processed workpiece 5 is located is moved to the outside of the machine, the outer bridge plate 2 where the blank is located is moved to the inside of the machine, then the exchange arm 10 begins to descend to enable the original inner bridge plate to fall on the supporting plate 13, meanwhile, the fixing pin 14 below the original outer bridge plate is inserted into the hydraulic locking device 15, after the fixing pin 14 is locked by the hydraulic locking device 15, the exchange arm 10 continues to descend to enable the protrusions 12 of the original inner bridge plate and the original outer bridge plate to be completely separated from the grooves 11 at the two ends of the exchange arm 10, and finally, the exchange arm 10 moves in the direction far away from the original outer bridge plate to return to the initial position of the exchange arm 10, namely, the whole process of replacing the bridge plate is completed.
Next, the process of the workpiece 5 is as follows:
the internal bridge plate 4 and the external bridge plate 2 are equivalent to a 'workbench' and are used for clamping a workpiece 5; the two main shafts 24 are both driven to rotate by a cutter, two workpieces 5 on the inner bridge plate 4 are processed simultaneously, after the two workpieces 5 are processed, the inner bridge plate 4 moves for a certain distance, and the two main shafts 24 process the other two workpieces 5 on the inner bridge plate 4; after one-direction machining of all the workpieces 5 on the inner bridge plate 4 is finished, the numerical control rotary table 20 drives the inner bridge plate 4 to rotate for an angle, the same operation is repeated until the machining of the workpieces 5 is finished, and then the inner bridge plate 4 and the outer bridge plate 2 are replaced.
In the embodiment, four workpieces 5 are placed on the internal bridge plate 4 and the external bridge plate 2, if the workpieces 5 are slightly larger in appearance and four workpieces cannot be placed on one workbench at the same time, the internal bridge plate 4 and the external bridge plate 2 can be changed into double stations, the distance between the double stations is equal to the distance between the two main shafts 24, and the two main shafts 24 simultaneously process the two workpieces 5. Or the workpieces 5 are small in size and can be placed at the same time, the distance between the two workpieces 5 is one third of the distance between the main shafts 24, and the two main shafts 24 simultaneously machine the two workpieces 5. The other processes are carried out as above.
If the conditions permit, the workpieces 5 may be placed on the reverse surfaces of the internal bridge plate 4 and the external bridge plate 2 at the same time, and the pitch of the workpieces 5 may be adjusted to the above-mentioned standard.
In addition, in the present embodiment, two independent spindle heads 27 are adopted, and the two spindle heads are moved synchronously along the Z-axis direction during the machining process, if the lengths of the tools on the two spindle heads 24 are inconsistent, one of the spindle heads 27 can be moved separately along the Z-axis direction by the control system, the movement amount is the difference between the two tool lengths, and then the two spindle heads are synchronized to start machining, so that even if the two spindle heads 24 use tools with different lengths, workpieces with the same size can be machined. The main object of the present invention can also be achieved if instead there is only one headstock 27 (both spindles 24 on this headstock 27), a set of Z-axis guides 28, only the tool lengths of the two spindles 24 need to be kept identical during machining.
It is right to have used specific individual example above the utility model discloses expound, only be used for helping to understand the utility model discloses, not be used for the restriction the utility model discloses. To the technical field of the utility model technical personnel, the foundation the utility model discloses an idea can also be made a plurality of simple deductions, warp or replacement.

Claims (10)

1. A vertical machining center with automatic bridge plate exchange is characterized by comprising:
an outer bridge plate above the exchange table, the outer bridge plate being mounted to and vertically separable from the support mechanism on the exchange table;
the machine inner bridge plate can move horizontally above the machine tool base and is fixed and separated up and down through a locking mechanism below the machine inner bridge plate; the external bridge plate and the internal bridge plate are used for clamping workpieces;
the vertical column is arranged on one side of the base of the machine tool, one or more than two spindle boxes which move up and down are arranged on the vertical column, and one or more than two spindles are vertically arranged on each spindle box;
a lifting rotating mechanism between the external bridge plate and the internal bridge plate, wherein a mounting plate is fixed on the lifting rotating mechanism;
the driving component is arranged above the mounting plate and can push the exchange arm to do reciprocating linear movement along the length direction of the exchange arm;
the exchange arm can lift and rotate at least 180 degrees in the horizontal plane under the action of the lifting and rotating mechanism; the two ends of the exchange arm, the external bridge plate and the internal bridge plate are provided with adaptive clamping and embedding structures for mutual movable fixation;
before the exchange of the external bridge plate and the internal bridge plate, one end of the exchange arm close to the external bridge plate is positioned below the external bridge plate.
2. The vertical machining center for automatically exchanging the bridge plate as claimed in claim 1, wherein the inner bridge plate has blocking structures at both ends thereof for preventing the exchange arm from rotating therethrough.
3. The vertical machining center for automatically exchanging bridge plates according to claim 2, wherein the blocking structure is at least two locking mechanisms, and the at least two locking mechanisms are distributed on two sides below the inner bridge plate.
4. The vertical machining center for automatically exchanging bridge plates according to claim 2, wherein the blocking structure comprises a numerical control turntable and a disc tailstock, and the numerical control turntable and the disc tailstock are respectively connected with two ends of the inner bridge plate.
5. The vertical machining center for automatically exchanging bridge plates as claimed in claim 2 or 4, wherein the clamping and embedding structures on the internal bridge plate are located between the blocking structures at the two ends of the internal bridge plate.
6. The vertical machining center for automatically exchanging bridge plates of claim 1, wherein the engaging structure comprises a groove disposed at both ends of the exchange arm, a protrusion disposed on the inner bridge plate and the outer bridge plate correspondingly or disposed at both ends of the exchange arm, and a groove disposed on the inner bridge plate and the outer bridge plate correspondingly.
7. The vertical machining center for automatically exchanging bridge plates of claim 1, wherein the supporting mechanism is two supporting plates or two pillars or two supports distributed at both sides of the exchange platform, and the external bridge plate is lapped on the two supporting plates or two pillars or two supports.
8. The vertical machining center for automatically exchanging bridge plates according to claim 1, wherein the locking mechanism comprises a fixed pin fixed to the bottom end of the bridge plate in the machine and a hydraulic locking device adapted to the fixed pin and serving to lock and unlock the fixed pin.
9. The vertical machining center for automatically exchanging bridge plates according to claim 1, wherein the driving assembly comprises a guide rail, a sliding block and an oil cylinder, the guide rail is installed on the bottom surface of the exchange arm along the length direction of the exchange arm, and the sliding block is fixed on the installation plate; one end of the oil cylinder is fixed on the bottom surface of the exchange arm, the other end of the oil cylinder is fixed on the mounting plate, and the telescopic direction of the oil cylinder is the same as the extending direction of the guide rail.
10. The vertical machining center for automatically exchanging bridge plates according to claim 1, further comprising a detection switch for detecting that the middle point of the exchange arm moves to a position right above the axis of the rotating shaft of the lifting and rotating mechanism, wherein the detection switch is connected to the driving assembly.
CN201921094418.8U 2019-07-13 2019-07-13 Vertical machining center with automatic bridge plate exchange function Active CN210677766U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110238670A (en) * 2019-07-13 2019-09-17 上海大侨誉远精密机械有限公司 A kind of vertical machining centre that bridge plate exchanges automatically
CN115338642A (en) * 2022-10-19 2022-11-15 达州市全锦建材有限责任公司 Fixed frock is used in drilling of door and window angle sign indicating number and tapping

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110238670A (en) * 2019-07-13 2019-09-17 上海大侨誉远精密机械有限公司 A kind of vertical machining centre that bridge plate exchanges automatically
CN115338642A (en) * 2022-10-19 2022-11-15 达州市全锦建材有限责任公司 Fixed frock is used in drilling of door and window angle sign indicating number and tapping
CN115338642B (en) * 2022-10-19 2022-12-20 达州市全锦建材有限责任公司 Fixed frock is used in drilling of door and window angle sign indicating number and tapping

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Address after: 201414, No. 4158, Qian Qian Road, Fengxian District, Shanghai

Patentee after: Shanghai Daqiao Yuyuan Precision Machinery Co.,Ltd.

Address before: 201414, No. 4158, Qian Qian Road, Fengxian District, Shanghai

Patentee before: SHANGHAI DAQIAO YUYUAN PRECISION MACHINERY Co.,Ltd.