Horizontal machining center and machining center

Abstract

The utility model discloses a horizontal machining center and a machining center. The horizontal machining center comprises a base, a numerical control rotary table, a stand column, a sliding table, a spindle box, a tool magazine and a movable cutter head. The numerical control rotary table is slidably connected with the base through the X-axis guide rail. The stand column is fixed to the base. A Y-axis guide rail is arranged in the stand column. The sliding table is movably connected to a Y-axis guide rail of the stand column. The spindle box is slidably connected with the sliding table through the Z-axis guide rail and provided with a spindle. The tool magazine is fixed to the outer side of the stand column. The movable cutter head is movably arranged on the stand column through a movable piece, and a plurality of cutter clamping claws are arranged on the movable cutter head in the circumferential direction. The tool changing action of the main shaft is moved to the upper portion, the movable cutter head and the main shaft are used for tool changing, tools of the movable cutter head and the tool magazine can be exchanged in the normal working process of the main shaft, and efficiency is improved. Therefore, the problem that when the main shaft tool machining time is too short, tools cannot be exchanged in time between the tool disc and the large tool magazine, and waiting is caused is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to machining center technical field especially relates to a horizontal machining center and machining center. BACKGROUND

[0002] The machining center of current double horizontal main shaft mainly has:

[0003] 1. The double main shaft of opposition: the structure of movable column, the workbench between two stands is immovable or only moves in one direction, two main shafts can move up and down on respective stands and move forward and backward or left and right with the stand, and the two sides of the same workpiece are machined at the same time

[0004] 2. The double main shaft of parallelism: two parts can be machined at the same time, and there is movable column structure and cross slide structure. The movable column structure is similar to the double main shaft of opposition. The workbench on the cross slide moves forward and backward, the stand is immovable, and the main shaft can move up and down on the stand.

[0005] 3. The double main shaft of parallelism of integrated main shaft box: two parallel main shafts are installed on a main shaft box at the same time, and two parts are machined at the same time. It is used in the field of small part machining.

[0006] Defects of prior art

[0007] 1. If the two main shafts of the double main shaft structure of opposition machine two sides of a workpiece at the same time, and if the workpiece is not symmetrical, one main shaft has not been machined, and the other main shaft has not been machined, the main shaft will be stopped there waiting for the other, which seriously affects the machining efficiency. And if the rigidity of the workpiece itself is not good, the two main shafts will simultaneously process the workpiece, which will cause the precision or surface finish of the workpiece to deteriorate.

[0008] 2. In the double main shaft structure of parallelism, whether the movable column or the cross slide structure has a common defect: because the stand structure is large and heavy, the cross slide is also large and heavy, and these two types of machine tools want to get higher moving speed and acceleration, which is difficult, and are not conducive to manufacturing high-speed machining centers, and it is difficult to obtain higher machining efficiency.

[0009] 3. The double main shaft structure of parallelism of integrated main shaft box is only suitable for small part machining, and the distance between the two main shafts and the distance between the two rotary tables are fixed. Inevitably, there will be a small amount of error in the process of machine tool manufacturing, so that the distance between the main shafts and the distance between the rotary tables cannot be completely the same, and it is difficult to obtain the best precision for two workpieces at the same time in the machining process. Invention content

[0010] The utility model discloses a technical scheme that solves the above technical problem, provide a horizontal machining center, include: base, at least one numerical control turntable, stand, at least one main shaft box, at least one tool magazine and at least one movable cutter head, the numerical control turntable is connected through X axle guide rail with the base sliding, the stand is fixed on the base, Y axle front guide rail and Y axle rear guide rail are arranged in the stand, Z axle upper guide rail and Z axle lower guide rail are equipped on the main shaft box, Z axle upper guide rail is connected through the vertical plane of cross slide with Y axle front guide rail sliding, is connected through the plane of cross slide with Y axle rear guide rail sliding, Z axle lower guide rail is connected with Y axle front guide rail and Y axle rear guide rail sliding through slide respectively, main shaft is equipped on the main shaft box, the tool magazine is fixed in the outside of stand, the movable cutter head is movably arranged on the stand through the moving part, the movable cutter head is provided with a plurality of clamping jaws along the circumferential direction,

[0011] Wherein, the moving part includes: first guide rail, first installation platform, left and right drive device, second guide rail, second installation platform, front and back drive device, rotation drive device, the first guide rail is fixed on the top surface of the stand, the first installation platform is slidably connected on the first guide rail, and is driven by the left and right drive device, the second installation platform is movably arranged on the first installation platform through the second guide rail, and is driven by the front and back drive device, the movable cutter head is rotatably arranged on the second installation platform, and is driven by the rotation drive device arranged on the second installation platform.

[0012] Further, the top view shape of the stand is T-shaped structure, and the two sides are main support part and auxiliary support part respectively, the Y axle front guide rail and the Y axle rear guide rail are arranged on the front and rear sides of the main support part respectively, the Y axle front guide rail bearing surface faces the numerical control turntable direction, and the Y axle rear guide rail bearing surface faces the slide direction.

[0013] Further, the movable cutter head is provided with four clamping jaws distributed in cross, one of the clamping jaws is configured to receive the main shaft of the main shaft box to return the tool, and the remaining clamping jaws can simultaneously clamp the tool to be replaced.

[0014] Further, the numerical control turntable is slidably connected on the X axle guide rail and is driven by X axle drive screw, the cross slide is slidably connected on the Y axle front guide rail and the Y axle rear guide rail, the slide is slidably connected on the Y axle front guide rail and the Y axle rear guide rail respectively and is driven by Y axle screw, the main shaft box is slidably connected on the cross slide through Z axle upper guide rail and is slidably connected on the slide through Z axle lower guide rail, and is driven by Z axle screw.

[0015] Further, the tool magazine has a plurality of tool pockets capable of clamping tools, the tool pockets and the clamped tools have axial lines at 90 degrees with the axial line of the main shaft, and the entire tool pocket chain of the tool magazine is rotatable; when the tool to be exchanged in the tool magazine needs to be exchanged to the movable tool disc, the tool pocket of the tool to be exchanged is rotatable by 90 degrees to make the tool pocket and the tool to be exchanged have axial lines parallel to the main shaft, and the movable tool disc can be moved leftward and rightward by the leftward and rightward driving devices and moved forward and backward by the forward and backward driving devices to realize the exchange with the tools in the tool magazine.

[0016] To solve the above technical problems, the utility model further provides a machining center, including

[0017] A base;

[0018] Numerical control rotary table, the numerical control rotary table is connected through X axle guide rail with the base slidingly;

[0019] Stand, the stand is arranged on base, Y axle guide rail is arranged in the stand;

[0020] Slide table, the slide table is movably connected to the Y axle guide rail of the stand;

[0021] Main shaft box, the main shaft box is slidably connected with the slide table through the Z axle guide rail, and the main shaft box is provided with a main shaft;

[0022] Tool magazine, the tool magazine is arranged on the front side of the stand.

[0023] Compared with the prior art, the application has the following beneficial effects:

[0024] 1. Efficient double workbench parallel processing:

[0025] Double numerical control rotary table and independent X axle drive: two numerical control rotary tables are respectively driven by independent X axle screws, can independently move left and right along the X axle guide rail, cooperate with the B axle full-circle rotation of the workbench, realize synchronous clamping and processing of double workpieces, and greatly shorten the production cycle.

[0026] Double main shaft cooperative processing: two main shafts can independently execute X, Y and Z three-axis linkage processing, support complex process processing of different regions of the same workpiece or two independent workpieces at the same time.

[0027] 2. High rigidity structure and motion stability:

[0028] T-shaped stand and cross slider connection:

[0029] The T-shaped main support end of the column is provided with Y-axis front and rear guide rails, the bearing surface of the front guide rail faces the workbench direction and directly bears the cutting reaction force, and the rear guide rail is connected with the Z-axis upper guide rail through parallel cross sliding blocks to form a long-arm rigid support structure, thereby reducing vibration deformation and improving machining precision. Meanwhile, the column has a T-shaped top view, and the front and rear guide rail mounting surfaces of the main support part are arranged, so that the column casting is more convenient to process and assemble.

[0030] The Z-axis guide rail is connected with the column through vertical cross sliding blocks (Y-axis front guide rail) and parallel cross sliding blocks (Y-axis rear guide rail), thereby shortening the distance between the Z-axis guide rail and the column Y-axis guide rail, shortening the distance between the main shaft center line and the Y-axis guide rail, and enhancing the rigidity and motion stability of the main shaft box.

[0031] Layered guide rail layout: the Z-axis lower guide rail is in sliding cooperation with the sliding table, and the Z-axis upper guide rail is connected with the column through cross sliding blocks to realize high-precision movement of the main shaft box along the Z-axis, while ensuring the dynamic balance of Y-axis lifting and Z-axis feeding. Moreover, this structure can realize high-rigidity and high-stability connection of the main shaft box without a too thick and heavy sliding table, which is conducive to obtaining ideal cutting machining effect and realizing higher feeding speed and higher acceleration.

[0032] 3. Quick tool changing and tool pre-storage capability:

[0033] Mobile tool disc multi-tool position design:

[0034] The tool disc is provided with four cross-distributed tool clamping jaws, one of which is used for receiving the main shaft returned tool, and the remaining ones can pre-store standby tools, so as to realize the quick tool changing mode of "one return and three taking", realize faster tool changing speed under the premise of large-capacity tool magazine, and solve the problem of insufficient time for exchanging standby tools between mobile tool disc tool magazines when the main shaft tool machining time is very short.

[0035] The tool disc is moved in three dimensions through a moving part, which can not only dock with the main shaft for tool changing, but also can be moved horizontally to exchange tools in the tool magazine, supports parallel machining and tool storage and taking, and avoids main shaft downtime.

[0036] The tool pockets of the tool magazine are arranged orthogonally to the main shaft axis, the standby tool position tool pocket can be 90° rotated and positioned, the tool exchange direction is parallel to the main shaft axis, and reliable tool changing is ensured.

[0037] The tool magazine can be configured with dozens of tool positions, meets the multi-tool demand of complex part machining, and reduces the frequency of manual intervention.

[0038] Double main shaft synchronous tool changing: through the rotary movement of the tool disc, the two main shafts can simultaneously complete tool changing, and further shorten the auxiliary time of multi-process machining.

[0039] Horizontal machining center often needs large capacity tool magazine, generally mechanical arm tool changing mode uses mechanical arm to rotate and exchange between main shaft and large capacity tool magazine, the rotation diameter of mechanical arm plus tool length, the required movement range is very large, the protection door of tool magazine must be large enough, in this way, more time is consumed for opening and closing the door each time tool changing. And if the column does not move, the model will cause large capacity tool magazine to occupy the position beside the main shaft, and the operator to carry out debugging work, which is very inconvenient to use. The utility model solves the two problems, the utility model moves the tool changing action of the main shaft to the upper part, and exchanges tools between a movable tool disc and the main shaft, and the tools of the movable tool disc can exchange tools between the large capacity tool magazine during normal operation of the main shaft. In this way, the following advantages are obtained: (1) the tool changing action is above the main shaft, the protection door can be made smaller and lighter, and the opening and closing speed of the door is faster, which is beneficial to shorten the tool changing time. (2) since the position of the large capacity tool magazine to be changed is moved to the upper part, for the column fixed type structure, the position beside the main shaft is left for the operator, so that debugging is more convenient.

[0040] The utility model discloses a combination of double workbench, double spindle cooperative processing, high rigidity T type column, quick tool changing system and modular drive design, realizes the comprehensive performance breakthrough of high efficiency processing, high precision and low downtime. DRAWINGS

[0041] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, the following will briefly introduce the drawing needed to be used in the embodiment or prior art description, obviously, the drawing in the following description is only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to the structure shown in these drawings without creating labor.

[0042] Figure 1 It is the structure schematic view of horizontal machining center of the utility model;

[0043] Figure 2 It is the structure schematic view of column of the utility model;

[0044] Figure 3 It is the overhead structure schematic view of column of the utility model;

[0045] Figure 4 It is the structure schematic view of movable tool disc of the utility model;

[0046] Figure 5 It is the structure schematic view of cross slider and sliding table of the utility model;

[0047] Figure 6 It is the structure schematic view of machining center of the utility model;

[0048] Figure 7 For the mobile cutterhead one embodiment structure schematic view of the utility model is described.

[0049] Explanation of reference numerals:

[0050]

[0051] DETAILED DESCRIPTION

[0052] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0053] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the utility model are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications will also change accordingly.

[0054] In addition, the description of "first", "second" and the like in the utility model is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "several", "a plurality of" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0055] In the utility model, unless otherwise specifically defined and limited, the terms "connection", "fixing" and the like should be understood broadly, for example, "fixing" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through intermediate medium; can be the internal communication of two elements or the interaction relationship of two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0056] In addition, the technical solutions of various embodiments of the utility model can be combined with each other, but must be based on the realization of ordinary technical personnel in the art, when the combination of technical solutions appears mutual contradiction or cannot be realized, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the utility model.

[0057] The utility model provides a horizontal machining center and machining center, aim at designing a horizontal machining center of quick tool changing.

[0058] The specific structure of the horizontal machining center and the automatic tool changing method provided by the utility model will be described in the following specific embodiments:

[0059] Embodiment 1:

[0060] A horizontal machining center, comprising:

[0061] Base 11;

[0062] Numerical control rotary table 21, numerical control rotary table 21 is slidably connected with base 11 through X-axis guide rail 22;

[0063] Stand 31, stand 31 is fixed on base 11, Y-axis front guide rail 32 and Y-axis rear guide rail 33 are arranged in stand 31;

[0064] Spindle box 51, Z-axis upper guide rail 53 and Z-axis lower guide rail 54 are arranged on spindle box 51, Z-axis upper guide rail 53 is slidably connected with Y-axis front guide rail 32 through the vertical plane of cross slide 41 and is slidably connected with Y-axis rear guide rail 33 through the plane of cross slide 41;Z-axis lower guide rail 54 is slidably connected with Y-axis front guide rail 32 and Y-axis rear guide rail 33 through slide table 42, and spindle 52 is arranged on spindle box 51;(Cross slide 41 can be divided into front cross slide and rear cross slide, the two mounting surfaces of front cross slide are perpendicular to each other, called vertical cross slide, and are used for connecting Y-axis front guide rail 32;The two mounting surfaces of rear cross slide are parallel, called parallel cross slide, and are used for connecting Y-axis rear guide rail 33).

[0065] Tool magazine 60, tool magazine 60 is fixed on the outside of stand 31;

[0066] Movable tool disc 71, movable tool disc 71 is movably arranged on stand 31 through moving part 80, and movable tool disc 71 is provided with a plurality of clamping claws 72 in the circumferential direction;

[0067] The moving part 80 comprises a first guide rail 81, a first mounting table 82, left and right driving devices 83, a second guide rail 84, a second mounting table 85, front and back driving devices 86, and a rotating driving device 87. The first guide rail 81 is fixed on the top surface of the column 31. The first mounting table 82 is slidingly connected to the first guide rail 81 and is driven by the left and right driving devices 83. The second mounting table 85 is movably arranged on the first mounting table 82 through the second guide rail 84 and is driven by the front and back driving devices 86. The movable tool holder 71 is rotatably arranged on the second mounting table 85 and is driven by the rotating driving device 87 arranged on the second mounting table 85.

[0068] Further, the column 31 has a T-shaped structure in plan view, comprising a main support part 311 and an auxiliary support part 312. The Y-axis front guide rail 32 and the Y-axis rear guide rail 33 are arranged on the front and back sides of the main support part 311 respectively. The bearing surface of the Y-axis front guide rail 32 faces the direction of the numerical control rotary table 21, and the bearing surface of the Y-axis rear guide rail 33 faces the direction of the sliding table 42.

[0069] Further, the movable tool holder 71 is provided with four clamping jaws 72 arranged in a cross shape. One of the clamping jaws 72 is configured to receive the main shaft 52 of the spindle box 51 to return the tool, and the remaining clamping jaws 72 can simultaneously clamp the tool to be exchanged.

[0070] Further, the numerical control rotary table 21 is slidingly connected to the X-axis guide rail 22 and is driven by the X-axis driving screw.

[0071] The cross slider 41 is slidingly connected to the Y-axis front guide rail 32 and the Y-axis rear guide rail 33, and the sliding table 42 is slidingly connected to the Y-axis front guide rail 32 and the Y-axis rear guide rail 33 and is driven by the Y-axis screw 34. The cross slider 41 and the sliding table 42 can be integrated. The cross slider 41 is provided with two grooves on the side facing the column for slidingly connecting the Y-axis front guide rail 32 and the Y-axis rear guide rail 33 (linear guide rail mode). The cross slider 41 is provided with a groove on the side facing the spindle box 51 for connecting the Z-axis upper guide rail 53 (linear guide rail mode).

[0072] The spindle box 51 is slidingly connected to the cross slider through the Z-axis upper guide rail 53, is slidingly connected to the sliding table 42 through the Z-axis lower guide rail 54, and is driven by the Z-axis screw 55 arranged on the sliding table 42.

[0073] Further, the tool magazine 60 is provided with a plurality of tool pockets capable of clamping tools. The axis of the tool pockets and the clamped tools is arranged at 90 degrees to the axis of the main shaft 52. The tool pocket chain in the tool magazine 60 can rotate circumferentially along the tool magazine 60. The movable tool holder 71 is driven by the left and right driving devices 83 to move left and right along the first guide rail 81, and is driven by the front and back driving devices 86 to move forward and backward along the second guide rail 84, thereby realizing exchange with the tools in the tool magazine 60.

[0074] Embodiment 2

[0075] A horizontal machining center, as shown in Figure 1 , comprises:

[0076] A base 11, an X-axis guide rail 22 is arranged on the base 11 in a horizontal direction;

[0077] Two numerical control rotary tables 21, the two numerical control rotary tables 21 are respectively movably arranged on the X-axis guide rail 22, and the two numerical control rotary tables 21 are driven to move on the X-axis guide rail 22 by two X-axis lead screws 23 (the X-axis lead screws 23 are driven to rotate by a motor); the two numerical control rotary tables 21 are respectively provided with a workbench 24;

[0078] A column 31, the column 31 is in the shape of a mouth, and the bottom is connected with the base 11. The two opposite side walls of the column 31 are in a T-shaped structure, as shown in Figure 3 , one is a main support part 311, and the other is an auxiliary support part 312. The Y-axis front guide rail 32 and the Y-axis rear guide rail 33 are arranged on the two sides of the auxiliary support part, the bearing surface of the Y-axis front guide rail 32 is arranged towards the sliding table 40, and the bearing surface of the Y-axis rear guide rail 33 is arranged towards the numerical control rotary table 21;

[0079] Two spindle boxes 51, as shown in Figure 2 , Figure 5 , the two spindle boxes 51 are respectively slidably connected to the two opposite side walls of the column 31. Specifically, the spindle box 51 is provided with a Z-axis upper guide rail 53 and a Z-axis lower guide rail 54. The Z-axis upper guide rail 53 is slidably connected with the Y-axis front guide rail 32 through the vertical surface of the cross slide 41 and is slidably connected with the Y-axis rear guide rail 33 through the plane of the cross slide 41. The Z-axis lower guide rail 54 is slidably connected with the Y-axis front guide rail 32 and the Y-axis rear guide rail 33 through the sliding table 42 and is driven by a Z-axis lead screw 55 arranged on the sliding table 42. The spindle box 51 is provided with a spindle 52;

[0080] Two tool magazines 60, the two tool magazines 60 are respectively arranged on the two outer sides of the column 31. The tool magazine 60 is provided with a plurality of tool pockets capable of clamping tools. The tool pockets and the clamped tools are arranged at an angle of 90 degrees with the axis of the spindle 52. The tool pocket chain in the tool magazine 60 can rotate circumferentially along the tool magazine 60, so that the movable tool disc 71 realizes exchange with the tools in the tool magazine 60 through three-dimensional movement of the moving part 80;

[0081] Two movable tool discs 71, the two movable tool discs 71 are respectively movably arranged on the column 31 through a moving part 80. The movable tool disc 71 is circumferentially provided with four clamping claws 72 arranged in a cross shape;

[0082] Among them, as shown in Figure 4 , the moving part 80 is provided with a sliding rail 81, the sliding rail 81 is slidably connected with the Z-axis lower guide rail 54, and the moving part 80 is provided with a rotating shaft 82, the rotating shaft 82 is rotatably connected with the Z-axis upper guide rail 53.As shown, the moving part 80 comprises: a first guide rail 81, a first mounting table 82, a left-right driving device 83, a second guide rail 84, a second mounting table 85, a front-rear driving device 86, a rotating driving device 87, the first guide rail 81 is fixed on the top surface of the column 31, the first mounting table 82 is slidingly connected on the first guide rail 81, the first mounting table 82 is driven to move on the first guide rail 81 by the left-right driving device 83 (moving by the way of motor driving screw); the second mounting table 85 is movably arranged on the first mounting table 82 through the second guide rail 84 and is driven by the front-rear driving device 86; the movable cutter head 71 is rotatably arranged on the second mounting table 85 and is driven by the rotating driving device 87 arranged on the second mounting table 85 (moving by the way of gear rotation, the movable cutter head 71 is in gear connection with the output shaft of the rotating driving device 87).

[0083] The specific implementation method of the double-spindle horizontal machining center of embodiment 1 or embodiment 2 comprises the steps of:

[0084] S1. The spindle is moved upward to make the tool enter the tool clamping jaw of the cutter head;

[0085] S2. The spindle box is moved backward along the Z axis to disengage the tool;

[0086] S3. The cutter head is rotated to align the tool to be replaced with the spindle axis;

[0087] S4. The spindle box is moved forward along the Z axis to clamp the new tool, and the spindle box is moved downward for subsequent machining;

[0088] S5. The cutter head is moved transversely to dock with the tool magazine;

[0089] S6. The cutter head is moved forward and backward to complete the tool storage and retrieval;

[0090] The cutter head is moved transversely away from the tool magazine, the tool sleeve is turned back 90 degrees to the vertical of the spindle axis, and then the entire tool sleeve chain of the tool magazine can be rotated to update the tool position to be replaced.

[0091] S7. The tool sleeve of the tool magazine is rotated to update the tool position to be replaced.

[0092] Specifically, the cutter head is rotated by 90 degrees each time.

[0093] Further, during the execution of steps S5-S7, the spindle can continue to perform machining operations, and the cutter head can perform machining and tool replacement in parallel through the pre-stored tools of the multiple tool clamping jaws. The multiple tool clamping jaws can avoid the problem of the cutter head and the tool magazine not being able to exchange in time when the machining time of the spindle tool is too short, and the multiple pre-stored tools to be replaced on the cutter head can avoid this problem.

[0094] Further, when performing double-spindle synchronous tool replacement, the two spindles are moved upward at the same time to dock with the cutter head, and the cutter head is rotated to make the two groups of tools to be replaced synchronously aligned with the double-spindle axis.

[0095] Embodiment 3

[0096] A machining center, as shown in Figure 6 , Figure 7 , comprises:

[0097] a base 11, on which an X-axis guide rail 22 is arranged in a horizontal direction;

[0098] two numerical control rotary tables 21, which are respectively movably arranged on the X-axis guide rail 22 and are driven to move on the X-axis guide rail 22 by two X-axis lead screws 23 (by rotating the X-axis lead screws 23 driven by motors); each of the two numerical control rotary tables 21 is provided with a worktable 24;

[0099] a column 31, which is in the shape of a mouth and is connected to the base 11 at the bottom. The two opposite side walls of the column 31 are in a T-shaped structure, one of which is a main support part 311 and the other is an auxiliary support part 312. A Y-axis front guide rail 32 and a Y-axis rear guide rail 33 are arranged on the two sides of the auxiliary support part 312. The bearing surface of the Y-axis front guide rail 32 is arranged towards the sliding table 40, and the bearing surface of the Y-axis rear guide rail 33 is arranged towards the numerical control rotary table 21;

[0100] two spindle boxes 51, which are respectively slidably connected to the two opposite side walls of the column 31. Specifically, the Z-axis upper guide rail 53 and the Z-axis lower guide rail 54 are arranged on the spindle box 51. The Z-axis upper guide rail 53 is slidably connected to the Y-axis front guide rail 32 through the vertical surface of the cross slide 41 and is slidably connected to the Y-axis rear guide rail 33 through the horizontal surface of the cross slide 41. The Z-axis lower guide rail 54 is slidably connected to the Y-axis front guide rail 32 and the Y-axis rear guide rail 33 through the sliding table 42 and is driven by the Z-axis lead screw 55 arranged on the sliding table 42. The spindle box 51 is provided with a spindle 52;

[0101] a tool magazine 60, which is arranged above the front side of the column 31.

[0102] The tool magazine 60 is provided with dozens of tool clamping jaws 72, and the distance between the two spindles 52 is the same as the distance between the dozens of tool clamping jaws 72 (in this embodiment, the distance between the eight tool clamping jaws 72 is equal to the distance between the spindles 52).

[0103] When changing tools, the two spindles 52 move upwards so that the tools on the two spindles 52 enter the tool clamping jaws 72 in the standby tool position of the tool magazine 60. Then the two spindles 52 move backwards along the Z-axis direction so that the tools are completely exposed from the spindles 52. The tool magazine 60 is rotated so that the standby tools are aligned with the spindles 52. The two spindles 52 move forwards along the Z-axis direction so that the tools enter the taper shanks of the spindles 52 and are tightened. Then the spindles 52 can move downwards for subsequent machining.

[0104] Such an automatic tool changing mechanism is simpler and more reliable.

[0105] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A horizontal machining center, characterized by, Comprise: Base; At least one numerical control rotary table, the numerical control rotary table is slidably connected with the base through an X-axis guide rail; A column, the column is fixed on the base, a Y-axis front guide rail and a Y-axis rear guide rail are arranged in the column; At least one spindle box, the spindle box is provided with a Z-axis upper guide rail and a Z-axis lower guide rail, the Z-axis upper guide rail is slidably connected with the Y-axis front guide rail through a vertical plane of a cross slider and is slidably connected with the Y-axis rear guide rail through a horizontal plane of the cross slider, the Z-axis lower guide rail is slidably connected with the Y-axis front guide rail and the Y-axis rear guide rail through a sliding table, the spindle box is provided with a spindle; At least one tool magazine, the tool magazine is fixed outside the column; At least one movable tool disc, the movable tool disc is movably arranged on the column through a moving part, the movable tool disc is provided with a plurality of clamping claws in a circumferential direction; Wherein, the moving part comprises a first guide rail, a first mounting table, left and right driving devices, a second guide rail, a second mounting table, front and rear driving devices, and a rotating driving device, the first guide rail is fixed on the top surface of the column, the first mounting table is slidably connected on the first guide rail and is driven by the left and right driving devices, the second mounting table is movably arranged on the first mounting table through the second guide rail and is driven by the front and rear driving devices, and the movable tool disc is rotatably arranged on the second mounting table and is driven by the rotating driving device arranged on the second mounting table.

2. - The horizontal machining center according to claim 1, characterized in that: The top view shape of the column is in a T-shaped structure, and the two sides are a main support part and an auxiliary support part respectively, the Y-axis front guide rail and the Y-axis rear guide rail are arranged on the front and rear sides of the main support part respectively, the bearing surface of the Y-axis front guide rail faces the direction of the numerical control rotary table, and the bearing surface of the Y-axis rear guide rail faces the direction of the sliding table.

3. - The horizontal machining center according to claim 1, characterized in that: The movable tool disc is provided with four clamping claws which are distributed in a cross shape, one of the clamping claws is configured to receive the spindle of the spindle box to return the tool, and the remaining clamping claws can simultaneously clamp the tools to be changed, and the rotating driving device drives the movable tool disc to rotate through a gear set.

4. The horizontal machining center according to claim 1, wherein: The numerical control rotary table is slidably connected on the X-axis guide rail and is driven by an X-axis driving screw; The cross slider is slidably connected on the Y-axis front guide rail and is slidably connected on the Y-axis rear guide rail; The sliding table is slidably connected on the Y-axis front guide rail and the Y-axis rear guide rail respectively and is driven by a Y-axis screw; The spindle box is slidably connected on the cross slider through the Z-axis upper guide rail, is slidably connected on the sliding table through the Z-axis lower guide rail, and is driven by a Z-axis screw.

5. - The horizontal machining center according to claim 1, characterized in that: A plurality of tool pockets capable of clamping tools are arranged in the tool magazine, the axis of the tool pockets and the clamped tools is arranged at 90 degrees with the axis of the spindle, and the tool pocket chain in the tool magazine can rotate in the circumferential direction of the tool magazine.

6. A machining center, characterized by Comprise Base; Two numerical control rotary tables, the two numerical control rotary tables are slidably connected with the base through X-axis guide rails respectively; A column, the column is arranged on the base, a Y-axis front guide rail and a Y-axis rear guide rail are arranged in the column; Two main shaft boxes, two of the main shaft boxes are respectively slidably connected to two opposite side walls of the column; the main shaft box is provided with a Z-axis upper guide rail and a Z-axis lower guide rail, the Z-axis upper guide rail is slidably connected with the Y-axis front guide rail through the vertical plane of a cross slider and is slidably connected with the Y-axis rear guide rail through the plane of the cross slider; the Z-axis lower guide rail is slidably connected with the Y-axis front guide rail and the Y-axis rear guide rail through a sliding table, and the main shaft box is provided with a main shaft; A tool magazine is arranged above the front side of the column.

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