TWM610601U - Multi-head machining center - Google Patents

Abstract

The present disclosure provides a multi-head machining center including: a base; a column assembly fixedly connected to the base; a work table mounted on the base; a beam connected to the column assembly; a sliding table connected to the beam; a main shaft assembly including at least four main shafts, each of the four main shafts is connected to the sliding table; and a drive assembly connected to the work table, the slide table and the main shaft assembly and configured for driving the work table to slide in a reciprocating manner relative to the base, driving the slide table to slide in a reciprocating manner relative to the beam and driving main shafts of the main shaft assembly to slide in a reciprocating manner relative to the slide table. The at least four main shafts are arranged on both sides of the beam and are symmetrically distributed with the beam as an axis. The at least four main shafts can process external workpieces synchronously or asynchronously. The multi-head machining center in the present disclosure including the at least four main shafts symmetrically distributed in the matrix on the beam can improve the machining precision by using a vibration-proof performance of the symmetric distribution, and simultaneously improve a production capacity by utilizing the advantages of synchronous or asynchronous machining of the main shaft, having broad application prospects.

Description

Multi-head machining center

This creation is about the technical field of processing equipment, especially about a multi-head processing center.

The rapid development of industrialization has put forward higher requirements for the production and manufacturing of mechanical parts. As the core equipment for the production of mechanical parts, machining centers determine the forming speed and forming quality of mechanical parts. Taking the widely used wheel hub in the automobile industry as an example, the machining center suitable for the automobile wheel hub often adopts a four-beam component system. This machining center adopts a double beam structure, and only a single spindle is hung on each beam, which is very weak in processing efficiency. The structural design of the main shaft and beam of the machining center has become one of the constraints and difficulties in the development of the machining center.

In view of this, it is necessary to provide an improved multi-head machining center, which has a reasonable structural layout of the main shaft and cross beam, improved processing efficiency and productivity, and has a wide range of application prospects.

This creation provides a multi-head machining center, including: a base; a column assembly, which is fixedly connected to the base; a work table, which is installed on the base; a beam, which is connected to the column assembly; a sliding table, which is connected to the beam; The main shaft assembly includes at least four main shafts, each of which is connected to the sliding table; a driving assembly, which is connected to the work table, the sliding table, and the main shaft assembly, and can drive the work table to reciprocate relative to the base Sliding, driving the sliding table to reciprocate sliding relative to the beam and driving the main shaft to reciprocate sliding relative to the sliding table; the four main spindles are arranged on both sides of the beam and are axisymmetric with the beam as the axis Distribution; the four spindles can process external work pieces synchronously or asynchronously.

Further, the axial distances between the four main shafts are equal.

Further, the column assembly includes a column; the column includes a first end connected to the beam and a second end relatively far from the beam, and the width of the first end is smaller than the width of the second end.

Further, a hollow structure is provided in the column.

Further, the beam includes a first layer and a second layer that are stacked, the first layer is connected to the column assembly, and the first layer and the second layer are spaced apart from each other to form an inner cavity; The sliding table is accommodated in the inner cavity and can slide back and forth along the cross beam.

Further, a first slide rail is provided on the first layer, a second slide rail is provided on the second layer, the first slide rail and the second slide rail are arranged parallel to each other, and the slide table penetrates the The first slide rail and the second slide rail slide back and forth along the cross beam.

Further, the first layer and the second layer are integrally formed.

Further, a split structure is adopted between the first layer and the second layer.

Further, the drive assembly includes a first drive motor, a second drive motor, and a third drive motor. The first drive motor is installed on the base and connected to the worktable. The first drive motor can Drive the worktable to slide back and forth relative to the base; the second drive motor is mounted on the beam and connected to the sliding table, and the second drive motor can drive the sliding table to slide back and forth relative to the beam The third drive motor is installed on the sliding table and connected to the main shaft, and the third drive motor is used to drive the main shaft to slide back and forth relative to the sliding table.

Further, a first screw rod is arranged between the first drive motor and the workbench, and a nut screw rod fit is formed between the first screw rod and the workbench, and the first drive motor penetrates the first screw rod. A threaded rod drives the worktable to move back and forth relative to the base.

A second screw rod is arranged between the second driving motor and the sliding table, and a nut screw rod fit is formed between the second screw rod and the sliding table, and the second driving motor penetrates the second screw rod The sliding table is driven to move back and forth relative to the cross beam.

A third screw rod is provided between the third drive motor and the sliding table, and a nut screw rod fit is formed between the third screw rod and the main shaft assembly, and the third drive motor penetrates the third screw rod The spindle assembly is driven to reciprocate relative to the sliding table.

The multi-head machining center provided by this creation uses at least four spindles distributed symmetrically in a matrix on the beam to improve the processing accuracy by using the vibration resistance of the symmetrical matrix distribution. At the same time, the advantages of synchronous or asynchronous processing of the spindles are used to increase productivity. Wide application prospects.

The following will clearly and completely describe the technical means in the authoring embodiment in conjunction with the drawings in the authoring embodiment. Obviously, the described embodiments are only a part of the embodiments of the authoring, but not all of the embodiments. Based on the embodiments in this creation, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the scope of protection of this creation.

It should be noted that when a component is called "installed on" another component, it can be directly installed on another component or there may also be a centered component. When a component is considered "set in" another component, it can be directly set on another component or a centered component may exist at the same time. When a component is considered to be "fixed" to another component, it can be directly fixed to another component or there may be a centered component at the same time.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field of this creation. The terms used in the description of the creation herein are only for the purpose of describing specific embodiments, and are not intended to limit the creation. The term "or/and" as used herein includes any and all combinations of one or more related listed items.

Please refer to FIGS. 1 to 2. FIG. 1 is a schematic structural diagram of a multi-head machining center 100 in an embodiment of the creation, and FIG. 2 is a schematic structural diagram of the multi-head machining center 100 shown in FIG. 1 from another perspective.

The multi-head machining center 100 includes a base 10, a column assembly 20, a work table 30, a beam 40, a sliding table 50, a driving assembly 60 and a spindle assembly 70. The base 10 is in contact with the external support surface and carries the column assembly 20 and the workbench 30; the column assembly 20 is connected to the base 10 and contacts the external support surface, and the column assembly 20 carries the beam 40; the workbench 30 is arranged on the base 10 and can be opposed to the base 10. Sliding; the cross beam 40 is arranged on the column assembly 20 and carries the sliding table 50; the sliding table 50 is connected to the driving assembly 60 and can slide back and forth along the cross beam 40 under the driving of the driving assembly 60; the driving assembly 60 is connected to the sliding table 50 and can drive The sliding table 50 slides back and forth relative to the cross beam 40; the spindle assembly 70 is installed on the sliding table 50.

The base 10 is used to carry the column assembly 20 and the table 30, the column assembly 20 is used to carry the beam 40, the table 30 is used to carry external work pieces to be processed, the beam 40 is used to carry the sliding table 50, and the drive assembly 60 is used to drive the sliding table. The table 50 moves, and the spindle assembly 70 is used for processing external work pieces to be processed.

The drive assembly 60 drives the sliding table 50 to slide along the cross beam 40 under the power supply of an external power source, and by cooperating with the sliding of the table 30 relative to the base 10 and the feed movement of the spindle assembly 70 relative to the sliding table 50, the spindle assembly 70 can be relatively waiting. Three-axis movement of the processing work piece. The spindle assembly 70 is relatively close to the work piece to be processed and processes the work piece to be processed by cutting, milling, etc., so as to complete the processing operation process of the work piece to be processed.

In this embodiment, the work piece to be processed is an automobile hub, that is, the multi-head machining center 100 is used to process automobile hubs. It can be understood that the multi-head machining center 100 is not limited to only being able to process automobile wheels. In other embodiments, the work piece to be processed may also be other parts besides automobile wheels, that is, the multi-head machining center 100 is also capable of processing automobile wheels. Machining tasks for parts other than the wheel hub.

The base 10 is in contact with the external support surface and is fixedly connected to the column assembly 20. The arrangement of the base 10 reduces the center of gravity of the multi-head machining center 100 and increases the contact area with the external support surface, thereby improving the anti-vibration performance of the multi-head machining center 100 and increasing the stability.

In this embodiment, the base 10 is arranged in a rectangular shape, that is, the cross section of the base 10 is rectangular. It can be understood that in other embodiments, the base 10 may also adopt a cross-sectional shape such as a circle, an ellipse, etc., as long as it can stably support components such as the column assembly 20.

The column assembly 20 is fixedly connected to the base 10 and is used to support the cross beam 40. The upright assembly 20 includes at least one upright 21, and the upright 21 carries the cross beam 40.

In this embodiment, the number of the uprights 21 is two, and the two uprights 21 are respectively located on both sides of the base 10 and carry the two ends of the cross beam 40 in the length direction. It can be understood that, in other embodiments, the number of columns 21 can also be one or more than two. The provision of one column 21 can reduce the cost of the multi-head machining center 100, and the provision of two or more columns 21 can further increase the multi-head machining center 100. The stability.

In this embodiment, the side shape of the column 21 is arranged in the shape of a person. The column 21 includes a first end 211 adjacent to the beam 40 and a second end 212 opposite to the first end 211. The second end 212 of the column 21 is connected to the ground. In contact, the width of the first end 211 of the pillar 21 is smaller than the width of the second end 212. The uprights 21 arranged in the shape of "people" can be close to the equal stress distribution of the structure, the structure meets the demand and the safety is higher.

In this embodiment, a hollow structure 213 is provided on the column 21. The hollow structure 213 is used to reduce the weight of the column 21, thereby reducing the overall weight of the multi-head machining center 100 on the basis of ensuring the structural strength of the column 21, thereby reducing transportation costs and improving Ease of installation.

The working table 30 is arranged on the base 10 and connected to the driving assembly 60, and the working table 30 can slide back and forth relative to the base 10 under the driving action of the driving assembly 60.

Further, a sliding block (not shown) is protrudingly provided on the base 10 and extending toward the worktable 30. The worktable 30 is provided with a sliding groove (not shown) relative to the surface of the base 10, and the worktable 30 passes through the sliding block and sliding The grooves are embedded in each other and slide along the sliding grooves, so as to realize the reciprocating sliding movement on the base 10.

Of course, the chute can also be provided on the base 10, and the bumps are correspondingly arranged on the worktable 30. At this time, the worktable 30 can still be embedded between the slider and the chute and slide along the chute, which can also be achieved Reciprocating sliding on the base 10.

The cross beam 40 is arranged on two oppositely arranged uprights 21, which are arranged substantially along the width direction of the workbench 30. One end of the beam 40 is fixedly connected to one upright 21, and the other end is fixedly connected to the other upright 21.

The beam 40 is a frame structure, which includes a first layer 41 and a second layer 42 spaced apart from each other and arranged in a stacked layer. The first layer 41 is arranged between the second layer 42 and the pillar 21. The first layer 41 and the second layer 42 are connected to each other only at the ends so as to form an inner cavity 43 relatively close to the center. A part of the sliding table 50 is disposed in the inner cavity 43 and extends to the second layer 42.

A first slide rail 411 is provided on the first layer 41, and a second slide rail 421 is provided on the second layer 42. The slide table 50 is embedded on the first slide rail 411 and the second slide rail 421 at the same time, so as to realize the 40 on the reciprocating slide.

The double slide rail structure design of the cross beam 40 makes the sliding of the sliding table 50 on the cross beam 40 more stable, and the straightness of the sliding table 50 in the vertical direction can be better guaranteed, which helps to improve the processing accuracy.

In this embodiment, the first layer 41 and the second layer 42 are integrally formed; the first layer 41 and the column 21 adopt a separate structure. It can be understood that in other embodiments, the first layer 41 and the second layer 42 may also adopt a separate structure; the first layer 41 and the pillar 21 may also be integrally formed.

The sliding table 50 carries the main shaft assembly 70, and the main shaft assembly 70 is accommodated in the inner cavity 43 of the cross beam 40. In order to correspond to the double-layer design of the beam 40, the sliding table 50 also has two layers. The upper part of the sliding table 50 in the vertical direction is embedded at the second sliding rail 421 in the second layer 42. The sliding table 50 is vertically positioned. The lower part in the direction is embedded at the first sliding rail 411 in the first layer 41. Since the first slide rail 411 and the second slide rail 421 are arranged parallel to each other, the slide table 50 can slide along the first slide rail 411 and the second slide rail 421 at the same time, thereby having better sliding stability and sliding accuracy. which performed.

The driving assembly 60 includes a first driving motor 61, a second driving motor 62 and a third driving motor 63. The first driving motor 61 is provided on the base 10 and is used to drive the worktable 30 to reciprocate along the base 10; the second driving motor 62 is provided on the cross beam 40 and is used to drive the sliding table 50 to reciprocate along the cross beam 40; third The driving motor 63 is arranged on the sliding table 50 and is used to drive the spindle assembly 70 to reciprocate along the sliding table 50.

In order to realize the corresponding driving of the first drive motor 61, the second drive motor 62, and the third drive motor 63 to the table 30, the sliding table 50 and the spindle assembly 70, the first drive motor 61 and the table 30, the second drive motor 62 A transmission element is also provided between the sliding table 50 and the third driving motor 63 and the main shaft assembly 70 to transmit the driving action of the motor.

Specifically, a first screw rod 611 is provided between the first driving motor 61 and the worktable 30, and the first screw rod 611 is fixedly connected to the output shaft of the first driving motor 61, and can be operated by the first driving motor 61. Rotation; the first screw rod 611 and the worktable 30 form a nut screw rod fit, at this time the rotation of the first drive motor 61 output through the transformation effect of the nut screw rod fit, the output is able to drive the workbench 30 to slide back and forth along the base 10的linear movement.

A second screw rod 621 is arranged between the second driving motor 62 and the sliding table 50, and the second screw rod 621 is fixedly connected to the output shaft of the second driving motor 62 and can be rotated under the action of the second driving motor 62; The two screw rods 621 and the sliding table 50 form a nut screw fit. At this time, the rotation output by the second drive motor 62 is through the transformation effect of the nut screw fit, and the output is a linear movement that can drive the sliding table 50 to slide back and forth along the cross beam 40 .

There is a third screw rod 631 between the third driving motor 63 and the main shaft assembly 70. The third screw rod 631 is fixedly connected to the output shaft of the third driving motor 63 and can be rotated under the action of the third driving motor 63; The screw rod 631 and the spindle assembly 70 form a nut screw rod fit. At this time, the rotation output by the third drive motor 63 is through the transformation effect of the nut screw rod fit, and the output is a linear movement that can drive the spindle assembly 70 to reciprocate and slide along the sliding table 50 .

The direction in which the table 30 reciprocates along the base 10 is recorded as the first direction, the direction in which the sliding table 50 reciprocates along the beam 40 is recorded as the second direction, and the direction in which the spindle assembly 70 reciprocates relative to the sliding table 50 is recorded as the third direction.

In this embodiment, the moving direction of the spindle assembly 70 relative to the work piece to be processed is the direction of the three coordinate axes in the Cartesian coordinate system, that is, the first direction, the second direction, and the third direction are perpendicular to each other. The direction and the second direction are two mutually perpendicular directions in the same horizontal plane, and the third direction is the vertical direction.

It can be understood that this creation does not limit the first direction, the second direction, and the third direction to be set according to the direction of the Cartesian coordinate axis described above. In other embodiments, the first direction, the second direction, and the third direction The directions can also be set to three other directions that are not perpendicular to each other.

In addition, the present creation does not limit the first screw 611 provided between the first drive motor 61 and the workbench 30 to only directly form a nut screw fit with the workbench 30, and there is still a gap between the first screw 611 and the workbench 30. The screw sleeve and other elements fixedly connected to the workbench 30 can be used to indirectly cooperate to form a nut screw fit.

This creation does not limit the second screw rod 621 provided between the second drive motor 62 and the sliding table 50 only to directly form a nut screw fit with the sliding table 50, and the second screw rod 621 and the sliding table 50 can also pass through The screw sleeve and other elements fixedly connected to the sliding table 50 are indirectly matched to form a nut screw fit.

Similarly, this creation does not restrict the third screw rod 631 provided between the third drive motor 63 and the spindle assembly 70 to only directly form a nut screw fit with the spindle assembly 70. The third screw rod 631 and the spindle assembly 70 It is also possible to indirectly form a nut-screw fit through a screw sleeve and other elements fixedly connected to the spindle assembly 70.

In traditional machining centers, a single spindle is generally suspended on each beam, which is very weak in terms of production efficiency and accuracy. In order to improve the production efficiency and processing accuracy of the multi-head machining center 100 provided by this creation, the spindle assembly 70 includes at least four spindles 71, and at least one spindle 71 is provided on each side of the beam 40, for a total of at least four spindles 71; Utilizing the mutual cooperation between the at least four spindles 71, the multi-head machining center 100 can perform production processing in a synchronous or asynchronous processing manner with a large capacity, and has a wide range of application prospects.

In this embodiment, each side of the cross beam 40 is provided with at least two main shafts 71, and the multiple main shafts 71 located on both sides of the cross beam 40 are distributed axisymmetrically with the cross beam 40 as the axis. At this time, each spindle 71 can slide relative to the sliding table 50, and each spindle 71 can perform processing tasks through the installed tool, which further improves the efficiency. At the same time, at least four main shafts 71 form an axisymmetric distribution with the beam as the axis, and the symmetrically distributed main shafts 71 offset the deformation on the front and rear sides of the beam 40, which helps to ensure the machining accuracy.

At this time, the vibration of the four spindles 71 during processing will act on the beam 40 in a rectangular distribution, and the relative vibration interference between them is relatively low. At the same time, the vibration reaction of the beam 40 under the action of the four spindles 71 is better. Compared with the dual-spindle structure, which uses concentrated load as the vibration source, it has better performance in anti-vibration capability, that is, better performance in processing accuracy.

It can be understood that the present creation does not restrict the main shafts 71 on both sides of the beam 40 to be distributed in axisymmetric form; in other embodiments, the four main shafts 71 on the beam 40 can be set as one on one side. The other side is set to three.

Further, each side of the cross beam 40 is provided with at least two main shafts 71, and the plurality of main shafts 71 on both sides of the cross beam 40 are distributed axisymmetrically with the cross beam 40 as the axis, and the distance between the axes of the at least four main shafts 71 equal. At this time, the distances between the four main shafts 71 are equal, and the vibration during processing will act on the beam 40 in a square-distributed plane-symmetrical load. The relative vibration interference between them is further relatively low, and the processing accuracy is further improved.

It can be understood that the present creation does not limit that only the four main shafts 71 shown in the figure can be provided in the main shaft assembly 70. In other embodiments, the main shaft assembly 70 can also be provided with more than four main shafts 71, as long as the main shafts 71 are distributed axisymmetrically with the beam 40 as the axis.

Further, the multi-head machining center 100 includes a control center (not shown in the figure), and the control center is used to control the processing parameters of each spindle 71 in the spindle assembly 70. In this embodiment, at least four main shafts 71 are connected to the control center at the same time, so as to realize the combined use of the control center. Thereby reducing costs and improving the competitiveness of products. Under the control of the control center, the four main shafts 71 can process the work pieces to be processed synchronously or asynchronously, and the flexibility of production and the productivity are improved, and the product is more cost-effective.

The multi-head machining center 100 provided by this creation uses at least four spindles 71 symmetrically distributed in a matrix on the beam 40 to improve the processing accuracy by using the vibration resistance of the symmetrical matrix distribution, while taking advantage of the synchronous or asynchronous processing of the spindle 71 Increasing production capacity has broad application prospects.

The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, all possible combinations of the various technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, All should be considered as the scope of this specification.

Those of ordinary skill in the art should realize that the above implementations are only used to illustrate the creation, not as a limitation to the creation, as long as the above implementations are appropriately made within the scope of the essence of the creation. Changes and changes fall within the scope of this creation request.

10: Base 20: Column component 21: Column 211: first end 212: second end 213: hollow structure 30: workbench 40: beam 41: first layer 411: First slide 42: second layer 421: second slide 43: inner cavity 50: sliding table 60: drive components 61: The first drive motor 611: first screw 62: second drive motor 621: second screw 63: The third drive motor 631: third screw 70: Spindle assembly 71: Spindle 100: Multi-head machining center

Figure 1 is a schematic structural diagram of a multi-head machining center in an embodiment of the creation; Fig. 2 is a schematic diagram of the structure of the multi-head machining center shown in Fig. 1 from another perspective.

10: Base

20: Column component

21: Column

211: first end

212: second end

213: hollow structure

30: workbench

40: beam

41: first layer

411: First slide

42: second layer

43: inner cavity

50: sliding table

60: drive components

61: The first drive motor

611: first screw

62: second drive motor

621: second screw

63: The third drive motor

631: third screw

70: Spindle assembly

71: Spindle

100: Multi-head machining center

Claims (10)

A multi-head machining center (100), including: Base (10); The upright assembly (20) is fixedly connected to the base (10); The workbench (30) is installed on the base (10); Cross beam (40), connected to the column assembly (20); A sliding table (50), connected to the beam (40); The spindle assembly (70) includes at least four spindles (71), each of the spindles (71) is connected to the sliding table (50); and The drive assembly (60) is connected to the worktable (30), the sliding table (50) and the spindle assembly (70), and can drive the worktable (30) to slide back and forth relative to the base (10) to drive the The sliding table (50) reciprocally slides relative to the beam (40) and drives the main shaft (71) to reciprocate sliding relative to the sliding table (50); The four spindles (71) are arranged on both sides of the beam (40), and are distributed axisymmetrically with the beam (40) as the axis; the four spindles (71) can process external parts synchronously or asynchronously. Work piece. The multi-head machining center (100) according to claim 1, wherein the axis distances between the four spindles (71) are equal. The multi-head machining center (100) according to claim 1, wherein the column assembly (20) includes a column (21); the column (21) includes a first end (211) connected to the beam (40) ) And the second end (212) relatively far away from the beam (40), the width of the first end (211) is smaller than the width of the second end (212). The multi-head machining center (100) according to claim 3, wherein a hollow structure (213) is provided in the column (21). The multi-head machining center (100) according to claim 1, wherein the beam (40) includes a first layer (41) and a second layer (42) that are stacked, and the first layer (41) is connected to In the column assembly (20), the first layer (41) and the second layer (42) are spaced apart from each other and form an inner cavity (43); the sliding table (50) is accommodated in the inner cavity ( 43) inside and capable of sliding back and forth along the cross beam (40). The multi-head machining center (100) according to claim 5, wherein a first slide rail (411) is provided on the first layer (41), and a second slide rail is provided on the second layer (42) (421), the first slide rail (411) and the second slide rail (421) are arranged parallel to each other, and the slide table (50) passes through the first slide rail (411) and the second slide rail (421) Sliding back and forth along the beam (40). The multi-head machining center (100) according to claim 6, wherein the first layer (41) and the second layer (42) are integrally formed. The multi-head machining center (100) according to claim 6, wherein a split structure is adopted between the first layer (41) and the second layer (42). The multi-head machining center (100) according to claim 1, wherein the drive assembly (60) includes a first drive motor (61), a second drive motor (62), and a third drive motor (63). A first drive motor (61) is installed on the base (10) and connected to the workbench (30), and the first drive motor (61) can drive the workbench (30) relative to the base (30). 10) Reciprocating sliding; The second drive motor (62) is installed on the beam (40) and connected to the sliding table (50), and the second drive motor (62) can drive the sliding table ( 50) Sliding back and forth relative to the beam (40); the third drive motor (63) is mounted on the sliding table (50) and connected to the main shaft (71), the third drive motor (63) It is used for driving the main shaft (71) to slide back and forth relative to the sliding table (50). The multi-head machining center (100) according to claim 9, wherein a first screw (611) is provided between the first drive motor (61) and the worktable (30), and a first screw ( 611) and the workbench (30) form a nut screw fit, and the first drive motor (61) drives the workbench (30) relative to the base ( 10) Reciprocating movement; A second screw rod (621) is provided between the second drive motor (62) and the sliding table (50), and a nut screw rod is formed between the second screw rod (621) and the sliding table (50) In cooperation, the second driving motor (62) drives the sliding table (50) to reciprocate relative to the cross beam (40) through the second screw rod (621); and A third screw rod (631) is provided between the third drive motor (63) and the sliding table (50), and a nut screw rod is formed between the third screw rod (631) and the main shaft assembly (70) In cooperation, the third driving motor (63) drives the main shaft assembly (70) to reciprocate relative to the sliding table (50) through the third screw rod (631).

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