Tool pushing device, tool changing system and machine tool

Abstract

The utility model relates to the field of machine tools, in particular to a cutter pushing device, a cutter changing system and a machine tool, the cutter pushing device comprises a bottom plate, a first pushing plate, a second pushing plate, a first connecting piece, a second connecting piece, a driving assembly and a transmission assembly, the first pushing plate and the second pushing plate are arranged in a stacked mode, and after the first pushing plate moves, the first connecting piece and the second connecting piece are connected through the driving assembly. The second pushing plate can move by a certain displacement on the basis of the first pushing plate, and in actual use, the cutter can be pushed to the position under the main shaft without the need of arranging an overlong sliding plate.

Description

Technical Field

[0001] The utility model relates to the field of machine tools, and in particular, to a tool pushing device, a tool changing system and a machine tool. Background Technique

[0002] In the technology of multi-spindle machining centers, most domestic machine tool manufacturers currently adopt straight-line tool magazines and chain-type tool magazines. As the name implies, the straight-line tool magazine is in a straight-line shape. The entire tool magazine is pushed out by a driving element to directly below the spindle head, and then the tool is exchanged through a tool changing mechanism. However, for the existing driving element to push the tool magazine to directly below the spindle, its pushing stroke is limited. In order to enable the driving element to push the tool to a farther distance so that the tool can be located directly below the spindle, the slide plate for holding the tool needs to be set longer. However, if the slide plate is set too long, the overall volume of the machine tool will increase and occupy more space. Based on this, the existing technology still needs to be improved. Summary of the Utility Model

[0003] To solve the above problems, the purpose of the utility model is to provide a tool pushing device. By laminating the first pushing plate and the second pushing plate, during the movement of the first pushing plate, the second pushing plate can move a certain displacement on the basis of the first pushing plate, so that the tool can be pushed to directly below the spindle without setting a too long slide plate.

[0004] The purpose of the utility model is achieved by the following technical solutions:

[0005] A tool pushing device provided by the utility model includes:

[0006] A bottom plate;

[0007] A first pushing plate, movably arranged on the bottom plate;

[0008] A second pushing plate, movably arranged on the first pushing plate. A bearing table for placing tools is arranged on the second pushing plate, and a tool storage structure is arranged on the bearing table;

[0009] A first connecting piece, fixedly arranged on the bottom plate;

[0010] A second connecting piece, fixedly arranged on the second pushing plate;

[0011] A driving assembly, arranged between the bottom plate and the first pushing plate, for driving the first pushing plate to move;

[0012] A transmission assembly, arranged on the first pushing plate, for driving the second pushing plate to move; one side of the transmission assembly is fixedly connected to the first connecting piece, and the other side of the transmission assembly is fixedly connected to the second connecting piece.

[0013] In one embodiment, the driving assembly includes:

[0014] A driving motor, disposed on the base plate;

[0015] A lead screw base, disposed on the first pushing plate and located between the first pushing plate and the base plate;

[0016] A lead screw, one end of which is connected to the driving motor and the other end of which is connected to the lead screw base.

[0017] In one embodiment, the transmission assembly includes:

[0018] A first pulley, disposed on the side edge at one end of the moving direction of the first pushing plate;

[0019] A second pulley, disposed on the side edge at the other end of the moving direction of the first pushing plate;

[0020] A synchronous belt, sleeved on the first pulley and the second pulley; the first connecting member is fixedly connected to the synchronous belt, one end of the second connecting member is connected to the side of the synchronous belt away from the first connecting member, and the other end of the second connecting member is connected to the second pushing plate.

[0021] In one embodiment, two sets of the transmission assemblies are provided, and the two sets of the transmission assemblies are symmetrically disposed on both sides of the moving direction of the first pushing plate. The first connecting member includes two symmetrically disposed with respect to the midline in the length direction of the first pushing plate. The second connecting member is horizontally disposed on the second pushing plate, and both ends of the second connecting member are correspondingly connected to the synchronous belts of the two sets of the transmission assemblies.

[0022] In one embodiment, the bearing table includes a bearing plate horizontally disposed on the second pushing plate, and a plurality of the tool storage structures are arranged along the bearing plate. At least two tool storage positions are provided on each of the tool storage structures.

[0023] In one embodiment, the tool storage structure has a T-shaped structure and includes a vertical plate disposed on the second pushing plate and a horizontal plate horizontally disposed on the vertical plate. The tool storage positions are provided on both sides of the horizontal plate; and / or,

[0024] A first rail plate is disposed on the base plate, a first track is disposed on the first rail plate, and a first sliding rail cooperating with the first track is disposed on the first pushing plate;

[0025] A second rail plate is disposed on the side of the first pushing plate away from the base plate, a second track is disposed on the second rail plate, and a second sliding rail cooperating with the second track is disposed on the second pushing plate.

[0026] A tool changing system includes the tool pushing device, tool changing bracket, tool magazine and tool grasping mechanism described in any one of the above. The bottom plate is arranged on the tool changing bracket, and the tool magazine is arranged on the tool changing bracket, above the tool pushing device. A number of tools are arranged on the tool magazine. The tool grasping mechanism is arranged on the tool changing bracket corresponding to the tool magazine and the tool storage position, and is used for grasping the tools on the tool magazine and the tools stored in the tool storage position.

[0027] In one embodiment, the tool grasping mechanism includes an X-axis plate, a Y-axis plate, a Z-axis plate in a three-dimensional coordinate system relationship and a grasping component for grasping the tool. The X-axis plate is arranged on the tool magazine bracket perpendicular to the moving direction of the first pushing plate. The Y-axis plate is movably arranged on the X-axis plate, the Z-axis plate is movably arranged on the Y-axis plate, the grasping component is movably arranged on the Z-axis plate, and the grasping component is arranged corresponding to the tool magazine and the tool storage position for grasping the tools on the tool magazine or the tool storage position.

[0028] In one embodiment, the tool changing bracket further includes a leg component and a rod component. The leg component includes a first leg and a second leg which are perpendicular and spaced apart. The rod component includes a first rod and a second rod which are parallel to each other. The two ends of the first rod and the second rod are correspondingly arranged on the first leg and the second leg. The X-axis plate includes two corresponding to the first rod and the second rod. The two ends of the Y-axis plate are correspondingly arranged on the two X-axis plates. The tool magazine is located between the second pushing plate and the rod component.

[0029] The grasping component includes a cylinder connected to an external air source and a claw sleeve connected to the cylinder.

[0030] A machine tool includes the tool changing system described in any one of the above and a machine tool body. The machine tool body includes a base, a gantry column and a workbench. The gantry column and the workbench are arranged on the base. The tool magazine bracket is arranged on the base and on the side of the gantry column away from the workbench.

[0031] The beneficial effect of the present utility model is that by stacking the first pushing plate and the second pushing plate, after the first pushing plate moves, the second pushing plate can move a certain displacement on the basis of the first pushing plate. In actual use, it is not necessary to set a too long slide plate to push the tool to directly below the spindle. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The drawings described herein are used to provide a further understanding of the present utility model and constitute a part of this application. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0033] Figure 1 is a schematic structural view of the tool pushing device of the present utility model;

[0034] Figure 2 is a schematic sectional view of the tool pushing device of the present utility model;

[0035] Figure 3 is a schematic view after two - stage movement of the tool pushing device of the present utility model;

[0036] Figure 4 is a schematic structural view of the tool changing system of the present utility model;

[0037] Figure 5 is a schematic structural view of the tool grasping mechanism of the present utility model;

[0038] Figure 6 is a schematic structural view of the machine tool of the present utility model.

[0039] Among them, the reference numerals are:

[0040] 1 - bottom plate, 2 - first push plate, 3 - second push plate, 4 - first connecting piece, 5 - second connecting piece;

[0041] 6 - drive assembly, 61 - drive motor, 62 - lead screw base, 63 - lead screw;

[0042] 7 - transmission assembly, 71 - first pulley, 72 - second pulley, 73 - timing belt;

[0043] 8 - bearing platform, 81 - tool storage structure, 82 - tool storage position, 83 - clamping arm;

[0044] 9 - first slide rail, 10 - second slide rail;

[0045] 100 - tool changing bracket, 101 - first leg, 102 - second leg, 103 - first rod, 104 - second rod;

[0046] 200 - tool magazine;

[0047] 300 - tool;

[0048] 400 - tool grasping mechanism, 401 - X - axis plate, 402 - Y - axis plate, 403 - Z - axis plate, 404 - grasping component, 405 - cylinder, 406 - claw sleeve;

[0049] 500 - machine tool body, 501 - base, 502 - workbench, 503 - gantry column, 504 - spindle. Specific embodiments

[0050] To enable those skilled in the art to better understand the solution of the present utility model, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0051] Referring to Figures 1 to 3 , a tool pushing device according to an embodiment of the present utility model includes a bottom plate 1, a first pushing plate 2, a second pushing plate 3, a first connecting member 4, a second connecting member 5, a driving assembly 6 and a transmission assembly 7. Among them, the first pushing plate 2 is movably arranged on the bottom plate 1; the second pushing plate 3 is movably arranged on the first pushing plate 2, and a bearing table 8 for placing a tool 300 is arranged on the second pushing plate 3, and a tool storage structure 81 is arranged on the bearing table 8; the first connecting member 4 is fixedly arranged on the bottom plate 1; the second connecting member 5 is fixedly arranged on the second pushing plate 3; the driving assembly 6 is arranged between the bottom plate 1 and the first pushing plate 2 for driving the first pushing plate 2 to move; the transmission assembly 7 is arranged on the first pushing plate 2 for driving the second pushing plate 3 to move; one side of the transmission assembly 7 is fixedly connected to the first connecting member 4, and the other side of the transmission assembly 7 is fixedly connected to the second connecting member 5.

[0052] Specifically, the driving assembly 6 drives the first pushing plate 2 to move. When the first pushing plate 2 moves, it will drive the transmission assembly 7 to move through the first connecting member 4, and the movement of the transmission assembly 7 will drive the second pushing plate 3 to move through the second connecting member 5. By stacking the first pushing plate 2 and the second pushing plate 3, after the first pushing plate 2 moves, the second pushing plate 3 can move a certain displacement on the basis of the first pushing plate 2, so as to increase the pushing distance of the bearing table 8, so that it is not necessary to set a too long single pushing plate to push the tool storage position 82 to directly below the main shaft. The present utility model uses one power source to drive the movement of two-stage pushing plates to achieve two-stage displacement. The states of the two pushing plates after movement are referred to Figure 3 .

[0053] In an embodiment, referring to Figure 1 and Figure 2, a first rail plate is provided on the bottom plate 1, a first track is provided on the first rail plate, and a first slide rail 9 that is cooperatively connected with the first track is provided on the first push plate 2. A second rail plate is provided on the side of the first push plate 2 away from the bottom plate 1, a second track is provided on the second rail plate, and a second slide rail 10 that is cooperatively connected with the second track is provided on the second push plate 3. Specifically, the first track is a concave track, the first slide rail 9 is a protruding linear rail, and through the cooperation of the linear rail and the concave track, the driving assembly 6 drives the first push plate 2 to move along the concave track. The second track is a concave track, the second slide rail 10 is a protruding linear rail, the first push plate 2 drives the transmission assembly 7 to move, and the transmission assembly 7 drives the second push plate 3 to move on the concave track.

[0054] In one embodiment, referring to Figures 1 to 3 , the driving assembly 6 includes a driving motor 61, a lead screw seat 62 and a lead screw 63. The driving motor 61 is provided on the bottom plate 1, the lead screw seat 62 is provided on the first push plate 2 and is located between the first push plate 2 and the bottom plate 1. One end of the lead screw 63 is connected to the driving motor 61, and the other end of the lead screw 63 is connected to the lead screw seat 62. The driving motor 61 drives the lead screw 63 to rotate, and the rotation of the lead screw 63 in cooperation with the lead screw seat 62 causes the first push plate 2 to move along the first track.

[0055] In one embodiment, referring to Figures 1 to 3 , the transmission assembly 7 is a pulley set. The transmission assembly 7 includes a first pulley 71, a second pulley 72 and a synchronous belt 73 sleeved on the first pulley 71 and the second pulley 72. Both the first pulley 71 and the second pulley 72 are provided on the side of the first push plate 2 in the moving direction. The first connecting piece 4 is fixedly connected to the synchronous belt 73. One end of the second connecting piece 5 is connected to the side of the synchronous belt 73 away from the first connecting piece 4, and the other end of the second connecting piece 5 is connected to the second push plate 3. When the first push plate 2 moves, the synchronous belt 73 is driven to rotate through the first connecting piece 4 and the second connecting piece 5, and the rotation of the synchronous belt 73 drives the second push plate 3 to move through the second connecting piece 5. Through the cooperation of the driving motor 61 and the pulley set, only one power source is required to drive the first push plate 2 and the second push plate 3 to move.

[0056] In one embodiment, referring to Figure 3, the pulley sets are arranged in two groups, and the two pulley sets are symmetrically arranged on both sides of the moving direction of the first push plate 2. The first connecting member 4 includes two symmetrically arranged along the midline in the length direction of the first push plate 2. The second connecting member 5 is horizontally arranged on the second push plate 3, and both ends are correspondingly connected to the synchronous belts 73 of the two pulley sets. Specifically, one end of the first connecting member 4 is connected to the synchronous belt 73 of one pulley set, and the other end of the first connecting member 4 is connected to the synchronous belt 73 of the other pulley set. When the first push plate 2 is driven by the driving motor 61, the movement of the first push plate 2 will drive the two pulley sets to rotate, and the two pulley sets will push the second push plate 3 to move through the second connecting member 5. The two symmetrically arranged pulley sets provide a more balanced thrust for the first push plate 2.

[0057] In one embodiment, referring to Figure 1 , the carrying platform 8 includes a carrying plate horizontally arranged on the second push plate 3, and a plurality of tool storage structures 81 are arranged along the carrying plate. At least two tool storage positions 82 are arranged on each tool storage structure 81. The carrying platform 8 is arranged on the second push plate 3, and the required tool 300 is placed on the carrying platform 8. During actual use on the machine tool, the new tool 300 to be used is grabbed to a tool storage position 82, and then the carrying platform 8 is pushed to the working area of the machine tool. The tool 300 removed from the spindle is placed on another tool storage position 82, and then the new tool 300 is installed on the spindle to complete the replacement of the tool 300. During the tool change process, by pushing the carrying platform 8 to the working area for tool change, it is avoided that the entire tool magazine 200 is pushed to the working area, thereby avoiding the problem that other tools 300 on the tool magazine 200 are contaminated with chips.

[0058] Furthermore, referring to Figure 1 , the tool storage structure 81 is in a T-shaped structure, including a vertical plate arranged on the base and a horizontal plate horizontally arranged on the vertical plate. The tool storage positions 82 are arranged on both sides of the horizontal plate. In order to speed up the tool change speed, multiple groups of tool storage structures 81 are arranged. Specifically, the tool storage structures 81 can be arranged corresponding to the number of spindles. Each group of tool storage structures 81 is provided with two tool storage positions 82. In this embodiment, a carrying plate is arranged on the second push plate 3, and three T-shaped tool storage structures 81 are arranged on the carrying plate and are vertically arranged on the carrying plate. Two tool storage positions 82 are arranged on both sides of each T-shaped tool storage structure 81. The tool storage position 82 includes two clamping arms 83, and the two clamping arms 83 clamp the tool 300 on the tool storage structure 81.

[0059] In another embodiment, referring to Figure 4 and Figure 5, the present utility model provides a tool changing system, which includes the tool pushing device of any one of the above, a tool changing bracket 100, a tool magazine 200 and a tool grasping mechanism 400. The bottom plate 1 is arranged on the tool changing bracket 100, and the tool magazine 200 is arranged on the tool changing bracket 100, above the tool 300 pushing device. A number of tools 300 are arranged on the tool magazine 200. The tool grasping mechanism 400 is correspondingly arranged on the tool changing bracket 100 for the tool magazine 200 and the tool storage position 82, and is used to grasp the tools 300 on the tool magazine 200 and the tools 300 stored on the tool storage position 82.

[0060] The tool changing system of the present utility model can be used on a gantry machine tool. When a tool 300 needs to be installed, the tool grasping mechanism 400 grasps the required tool 300 from the tool magazine 200 to the tool storage position 82, and then the driving assembly 6 pushes the first pushing plate 2 and the second pushing plate 3 towards the side of the workbench of the machine tool, so that the tool storage position 82 is directly below the spindle of the machine tool. At this time, the tool 300 on the bearing table 8 can be installed on the spindle, and then the driving assembly 6 drives the first pushing plate 2 to move back to the original position away from the workbench side. When a tool 300 needs to be replaced, the tool grasping mechanism 400 grasps the required tool 300 from the tool magazine 200 to a tool storage position 82 on the bearing table 8, and then the first pushing plate 2 moves towards the workbench side, so that the tool storage position 82 is directly below the spindle. At this time, the old tool 300 on the spindle is first removed to another tool storage position 82 of the tool storage position 82, and then the spindle moves directly above the new tool 300, and the new tool 300 is installed on the spindle. After the assembly of the new tool 300 is completed, the first pushing plate 2 and the second pushing plate 3 return to the original position. During the tool changing process, by pushing the bearing table 8 to the working area for tool changing, it is avoided that the entire tool magazine 200 is pushed to the working area, thereby avoiding the problem that other tools 300 on the tool magazine 200 are contaminated with chips. Moreover, the stacking of the first pushing plate 2 and the second pushing plate 3 reduces the overall volume of the machine tool using this tool changing system.

[0061] In an embodiment, refer to Figure 4 and Figure 5, the tool grasping mechanism 400 includes an X-axis plate 401, a Y-axis plate 402, a Z-axis plate 403 in a three-dimensional coordinate system relationship, and a grasping component 404 for grasping the tool 300. The X-axis plate 401 is perpendicularly arranged on the tool magazine 200 bracket in the moving direction of the pushing plate (including the first pushing plate 2 and the second pushing plate 3). The Y-axis plate 402 is movably arranged on the X-axis plate 401, and the moving direction of the Y-axis is perpendicular to the moving direction of the pushing plate. The Z-axis plate 403 is movably arranged on the Y-axis plate 402, and the moving direction of the Z-axis plate 403 is the same as the moving direction of the pushing plate. The grasping component 404 is movably arranged on the Z-axis plate 403, and the grasping component 404 moves up and down along the Z-axis plate 403. The grasping component 404 corresponds to the tool storage structure 81 and is used to grasp the tool 300 on the tool storage structure 81. The tool grasping mechanism 400 is located above the tool magazine 200. When it is necessary to grasp the tool 300, the grasping component 404 moves along the X-axis plate 401, the Y-axis plate 402, and the Z-axis plate 403, so that the grasping component 404 moves to the position of the tool 300 to be grasped for grasping. After grasping the tool 300, it moves through the X-axis plate 401, the Y-axis plate 402, and the Z-axis plate 403 again, places the grasped tool 300 in the tool storage position 82, then the pushing plate pushes the carrier 8 below the spindle, removes the tool 300 on the spindle to another tool storage position 82, and then installs the grasped tool 300 on the spindle to complete the tool change.

[0062] Further, referring to Figure 4 , the tool change bracket 100 further includes a leg component and a rod component. The leg component includes a first leg 101 and a second leg 102 that are vertically and spaced apart on the bottom plate 1. The rod component includes a first rod 103 and a second rod 104 that are parallel to each other. The two ends of the first rod 103 and the second rod 104 are correspondingly arranged on the first leg 101 and the second leg 102; the X-axis plate 401 includes two correspondingly arranged on the first rod 103 and the second rod 104, and the two ends of the Y-axis plate 402 are correspondingly arranged on the two X-axis plates 401; the first pushing plate is arranged on the bottom plate 1, and the tool magazine 200 is located between the second pushing plate 3 and the rod component. The bottom plate 1, the leg component, and the rod component form a square frame.

[0063] Further, referring to Figure 4 and Figure 5 , the grasping component 404 includes a cylinder 405 connected to an external air source and a claw sleeve 406 connected to the cylinder 405. When it is necessary to grasp the tool 300, the cylinder 405 drives the claw sleeve 406 to open through air pressure. After the opened claw sleeve 406 corresponds to the tool 300, the cylinder 405 drives the claw sleeve 406 to close, so that the claw sleeve 406 grasps the tool 300.

[0064] In another embodiment, referring to Figure 4 andFigure 6 , the present utility model provides a machine tool, which includes the tool changing system described in any one of the above and the machine tool body 500. The machine tool body 500 includes a base 501, a gantry column 503 and a workbench 502. The gantry column 503 and the workbench 502 are arranged on the base 501, and the tool changing bracket 100 is arranged on the side of the gantry column 503 away from the workbench 502.

[0065] For multi-spindle machining centers, most domestic machine tool manufacturers currently use in-line tool magazines and chain-type tool magazines. As the name implies, the in-line tool magazine is in a straight row shape. The disadvantage of the in-line tool magazine structure is that when changing tools, the entire tool magazine is exposed in the working area, and the tool head is easily contaminated with chips, thus affecting the reliability of tool changing. For example, when changing tools, the entire tool magazine 200 is pushed directly below the spindle 504 so that the spindle 504 can change the tool 300. At this time, the entire tool magazine 200 is located in the working area, and thus debris such as cutting generated in the working area is likely to contaminate the tool magazine 200. The tool changing device of the present invention can only push the carrier 8 into the working area, avoiding pushing the entire tool magazine 200 into the working area, and thus can play a role in preventing the tool magazine 200 from being contaminated by cutting.

[0066] The machine tool of the present utility model can only push the carrier 8 into the working area of the machine tool, avoiding pushing the entire tool magazine 200 into the working area, and thus can play a role in preventing the tool magazine 200 from being contaminated by cutting.

[0067] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present utility model.

Claims

1. A tool pushing device, characterized in that: include: Bottom plate (1); A first pushing plate (2) movably arranged on the bottom plate (1); A second pushing plate (3) is movably arranged on the first pushing plate (2), the second pushing plate (3) being provided with a carrying platform for placing a knife (300), and the carrying platform being provided with a knife storage structure (81); A first connecting member (4) is fixedly arranged on the base plate (1); A second connecting member (5) is fixedly arranged on the second pushing plate (3); A driving assembly, arranged between the base plate (1) and the first pushing plate (2), and used for driving the first pushing plate (2) to move; A transmission assembly is arranged on the first pushing plate (2) and is used to drive the second pushing plate (3) to move; one side of the transmission assembly is fixedly connected to the first connecting member (4), and the other side of the transmission assembly is fixedly connected to the second connecting member (5).

2. The tool pushing device according to claim 1, characterized in that: The drive assembly comprises: A driving motor is arranged on the base plate (1); A screw seat, arranged on the first pushing plate (2) and located between the first pushing plate (2) and the bottom plate (1); A screw rod has one end connected to the driving motor and the other end connected to the screw rod seat.

3. The tool pushing device according to claim 1 or 2, characterized in that: The transmission assembly comprises: A first pulley, arranged on a side edge of one end of the first pushing plate (2) in the moving direction; A second pulley is arranged on the side of the other end of the moving direction of the first pushing plate (2); A synchronous belt is sleeved on the first pulley and the second pulley; the first connecting member (4) is fixedly connected to the synchronous belt, one end of the second connecting member (5) is connected to the side of the synchronous belt away from the first connecting member (4), and the other end of the second connecting member (5) is connected to the second pushing plate (3).

4. The tool pushing device according to claim 3, characterized in that: The transmission components are arranged in two groups, and the two groups of transmission components are symmetrically arranged on both sides of the moving direction of the first push plate (2). The first connecting member (4) includes two symmetrically arranged about the midline of the length direction of the first push plate (2). The second connecting member (5) is transversely arranged on the second push plate (3), and the two ends of the second connecting member (5) are correspondingly connected to the synchronous belts of the two groups of transmission components.

5. The tool pushing device according to claim 3, characterized in that: The carrying platform (8) comprises a carrying plate arranged horizontally on the second pushing plate (3), a plurality of knife storage structures (81) are arranged along the carrying plate, and each of the knife storage structures (81) is provided with at least two knife storage positions (82).

6. The tool pushing device according to claim 5, characterized in that: The knife storage structure (81) is a T-shaped structure, comprising a vertical plate arranged on the second pushing plate (3) and a horizontal plate arranged horizontally on the vertical plate, and the knife storage position (82) is arranged on both sides of the horizontal plate; and / or, The bottom plate (1) is provided with a first rail plate, the first rail plate is provided with a first track, and the first pushing plate (2) is provided with a first slide rail (9) which is matched and connected with the first track; A second rail plate is provided on a side of the first pushing plate (2) away from the bottom plate (1), a second rail is provided on the second rail plate, and a second slide rail (10) is provided on the second pushing plate (3) to cooperate with the second rail.

7. A tool changing system, characterized in that: The invention comprises a tool pushing device, a tool changing bracket (100), a tool magazine (200) and a tool grabbing mechanism (400) as claimed in any one of claims 1 to 6, wherein a base plate (1) is arranged on the tool changing bracket (100), a tool magazine (200) is arranged on the tool changing bracket (100) and is located above the tool pushing device, a plurality of tools (300) are arranged on the tool magazine (200), and the tool grabbing mechanism (400) is arranged on the tool changing bracket (100) corresponding to the tool magazine (200) and the tool storage position (82), and is used for grabbing the tools (300) on the tool magazine (200) and the tools (300) stored on the tool storage position (82).

8. The tool changing system according to claim 7, characterized in that: The tool grabbing mechanism (400) comprises an X-axis plate (401), a Y-axis plate (402), a Z-axis plate (403) and a grabbing component (404) for grabbing a tool (300) in a three-dimensional coordinate system relationship; the X-axis plate (401) is arranged on the tool changing bracket (100) perpendicular to the moving direction of the first pushing plate (2); the Y-axis plate (402) is movably arranged on the X-axis plate (401); the Z-axis plate (403) is movably arranged on the Y-axis plate (402); the grabbing component (404) is movably arranged on the Z-axis plate (403); the grabbing component (404) is arranged corresponding to the tool magazine (200) and the tool storage position (82) and is used to grab the tool (300) on the tool magazine (200) or the tool storage position (82).

9. The tool changing system according to claim 8, characterized in that: The tool changing bracket (100) further comprises a leg component and a rod component, wherein the leg component comprises a first leg (101) and a second leg (102) which are arranged vertically and at intervals, and the rod component comprises a first rod (103) and a second rod (104) which are parallel to each other, and the two ends of the first rod (103) and the second rod (104) are correspondingly arranged on the first leg (101) and the second leg (102); the X-axis plate (401) comprises two rods which are correspondingly arranged on the first rod (103) and the second rod (104), and the two ends of the Y-axis plate (402) are correspondingly arranged on the two X-axis plates (401), and the tool magazine (200) is located between the second pushing plate (3) and the rod component; The grabbing component (404) comprises a cylinder (405) connected to an external air source and a claw sleeve (406) connected to the cylinder (405).

10. A machine tool, characterized in that: The tool changing system and the machine tool body (500) comprise any one of claims 7 to 9, wherein the machine tool body (500) comprises a base (501), a gantry column (503) and a workbench (502), wherein the gantry column (503) and the workbench (502) are arranged on the base (501), and the tool changing bracket (100) is arranged on the base (501) and is located on a side of the gantry column (503) away from the workbench (502).

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