Tool changing system and CNC machine tool

Abstract

This application provides a tool changing system and a CNC machine tool. The tool changing system includes a disc-type tool magazine and two tool holder conveying mechanisms. The disc-type tool magazine includes a tool disc, tool holders, and tool holder seats. The tool holders are distributed around the outer edge of the tool disc via the tool holder seats. Each tool holder conveying mechanism includes a mounting base, a tool changing base, and a pushing component. One end of the mounting base is fixed above the tool disc, and the other end of the mounting base has a tool changing base extending outside the tool disc. The tool changing base has a receiving space for accommodating one tool holder. The pushing component is movably mounted on the mounting base and is used to push the tool holder to switch between the tool holder seat and the tool changing base. The tool holder pushing directions of the two tool holder conveying mechanisms form a first included angle. Using this tool changing system can improve tool changing efficiency and can process two workpieces simultaneously with only one tool magazine.

Description

Technical Field

[0001] This application relates to the field of machine tool technology, and in particular to a tool changing system and a CNC machine tool. Background Technology

[0002] Currently, in the tool changing process of CNC machine tools equipped with flat tool magazines, the spindle needs to move to the tool changing position of the tool turret multiple times. The movement speed is slow and the movement distance is long, so the tool changing process takes a long time. The tool changing method needs to be further optimized.

[0003] Furthermore, even without considering tool changing efficiency, most CNC machine tools equipped with flat tool magazines can only process one workpiece at a time, so there is room for improvement in processing efficiency. Summary of the Invention

[0004] The embodiments of this application aim to solve at least one of the problems of the prior art. The embodiments of this application provide a tool changing system and a CNC machine tool, thereby improving machining efficiency.

[0005] The relevant technical solutions of the embodiments of this application include the following:

[0006] A first aspect of this application provides a tool changing system. The tool changing system includes a disc-type tool magazine, which includes a tool disc, tool sleeves, and tool sleeve holders. The tool sleeves are distributed around the outer edge of the tool disc via the tool sleeve holders. The tool changing system further includes:

[0007] Two tool holder conveying mechanisms are provided. Each tool holder conveying mechanism includes a mounting base, a tool changer, and a pusher. One end of the mounting base is fixed above the tool disc, and the other end of the mounting base is provided with the tool changer and extends outside the tool disc. The tool changer has a receiving space for accommodating one tool holder. The pusher is movably disposed on the mounting base and is used to push the tool holder to switch between the tool holder and the tool changer. The tool holder pushing directions of the two tool holder conveying mechanisms form a first included angle.

[0008] Optionally, the blade sheath includes two sets, one set of blade sheaths and the other set of blade sheaths are arranged in a one-to-one correspondence, and the two blade sheaths arranged in a corresponding manner form a second angle with the line connecting the center of the blade disc, and the size of the second angle is the same as the size of the first angle.

[0009] Optionally, the size of the second included angle is between 120° and 180° from the size of the first included angle.

[0010] Optionally, the tool holder has a first guide structure, the tool changer has a second guide structure, and the tool holder has a sliding structure that is adapted to both the first guide structure and the second guide structure, wherein the first guide structure and the second guide structure are guide protrusions, and the sliding structure is a sliding groove.

[0011] Optionally, the first guide structure on at least one of the plurality of tool holders can be flush with the second guide structure and the distance between them is less than the length of the sliding structure.

[0012] Optionally, the pusher includes a first pusher portion and a second pusher portion disposed opposite to each other, wherein the space between the first pusher portion and the second pusher portion allows the cutter sleeves to pass through one by one in the circumferential direction of the cutter head.

[0013] Optionally, the tool changing system further includes two tool changing mechanisms, which are correspondingly arranged with the tool changing seats of the two tool sleeve conveying mechanisms. Each tool changing mechanism has a tool changing arm that can rotate around its own center point, and each tool changing arm has clamping parts at both ends.

[0014] In the tool changing state of one of the tool changing arms, the clamping part at one end of the tool changing arm is located below one of the tool changing seats; in the tool changing state of the other tool changing arm, the clamping part at one end of the tool changing arm is located below the other tool changing seat.

[0015] A second aspect of this application provides a CNC machine tool. The CNC machine tool includes two spindles, a tool changing system as described in any of the preceding embodiments, and a control system, wherein the control system is used to control the operation of the tool changing system and the two spindles, the tool changing system being used to provide tools to the two spindles.

[0016] Optionally, the CNC machine tool includes two machine tool bodies, each machine tool body including a spindle box, a crossbeam, a bed and a cradle turntable;

[0017] The bed includes a base and two side plates on both sides of the base. The extension direction of the tool sleeve is parallel to the extension direction of the side plates. The crossbeam is mounted on the two side plates. The spindle box is mounted on the crossbeam. The spindle is mounted on the spindle box. The cradle turntable is mounted on the bed and located below the spindle box.

[0018] The disc-type tool magazine is located below the two crossbeams and at least partially between the two crossbeams in the horizontal direction, and the spindle boxes of the two machine tool bodies are respectively mounted on the opposite sides of the two crossbeams.

[0019] Optionally, the beds of the two machine tool bodies are integrally formed, and each side plate is provided with a mounting groove at the end away from the disc tool magazine. The groove surface of the mounting groove is arc-shaped, and the opening of the mounting groove faces away from the disc tool magazine. The rotating shaft of the cradle turntable is mounted on the side plate through the mounting groove.

[0020] The technical solution for the tool changing system in this application embodiment has at least the following technical effects: The tool changing system includes a disc-type tool magazine and a tool holder conveying mechanism. The tool holder conveying mechanism has a pusher and a tool changer. The tool changer is located outside the tool disc. The pusher can push the tool holder to switch between the tool holder and the tool changer on the tool disc, thereby reducing the number of spindle reciprocating movements during the tool changing process, and thus reducing the time consumed in the tool changing process. In addition, the tool changing system includes one disc-type tool magazine and two tool holder conveying mechanisms. The tool holder ejection directions of the two tool holder conveying mechanisms are at a first included angle, so that one tool changing system can change tools for two spindles, thereby realizing the machining of two workpieces in the same time period with only one tool magazine.

[0021] It is easy to understand that the relevant technical solutions of the CNC machine tool in the embodiments of this application have at least the corresponding technical effects of the tool changing system, which will not be elaborated here.

[0022] Additional aspects and advantages of embodiments of this application will be set forth in part in the description which follows. Some will thus be obvious from the description, or may be learned by practice of the application. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the tool changing system in some embodiments of this application;

[0024] Figure 2 This is a schematic diagram of the structure of a disc-type tool magazine in some embodiments of this application;

[0025] Figure 3 This is a schematic diagram of the tool holder conveying mechanism in some embodiments of this application;

[0026] Figure 4 This is a schematic diagram of the tool changer and buffer in some embodiments of this application;

[0027] Figure 5(a) is a simplified schematic diagram of a disc-type tool magazine and tool holder conveying mechanism according to some embodiments of this application;

[0028] Figure 5(b) is a schematic diagram of a specific case of Figure 5(a) (α = β = 180°);

[0029] Figure 6 for Figure 1 A magnified view of area A in the image;

[0030] Figure 7 This is a schematic diagram of the structure of the pushing part in some embodiments of this application;

[0031] Figure 8 This is a schematic diagram of the tool changing mechanism in some embodiments of this application;

[0032] Figure 9 This is a schematic diagram of the main structure of a CNC machine tool in some embodiments of this application.

[0033] In the picture:

[0034] 10-Disc-type tool magazine; 110-Tool magazine; 1110-Disc body; 1120-Support structure; 1121-Support rib; 1130-Tool magazine seat; 120-Tool sleeve; 130-Tool sleeve seat; 1310-First guide structure; 1311-Guide part; 140-Tool magazine mounting base; 1410-Tool magazine base plate; 1420-Tool magazine connecting plate; 150-First reducer;

[0035] 20-Tool changing mechanism; 210-Tool changing arm; 2110-Clamping part; 220-Second reducer.

[0036] 30-Tool holder conveying mechanism; 310-Pushing component; 3110-First pushing part; 3120-Second pushing part; 3130-Pushing part base; 3140-Oval hole; 320-Driver; 330-Mounting base; 3310-Mounting base body; 3320-Mounting plate; 340-Buffer; 350-Tool changer; 3501-Accommodation space; 3510-Second guide structure; 3511-Guide part;

[0037] 40-Tool; 50-Spindle box; 60-Crossbeam; 70-Bed; 710-Base; 720-Side plate; 721-Mounting slot;

[0038] α - First included angle; β - Second included angle. Detailed Implementation

[0039] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments of this application or the prior art will be briefly introduced below.

[0040] Obviously, the accompanying drawings described below are merely some embodiments of this application. Those skilled in the art can obtain drawings of other embodiments based on the technical solutions illustrated in these drawings without any inventive effort.

[0041] It should be understood that "multiple" as used herein refers to two or more. In the description of this application, unless otherwise stated, " / " means "or", for example, "A / B" means A or B; "and / or" in this document is merely a description of the relationship between related objects, and it can represent three relationships, for example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, B exists alone, etc.

[0042] Furthermore, in order to clearly describe the technical solutions of the embodiments of this application, the terms "first" or "second" are used in the embodiments of this application to distinguish identical or similar items with substantially the same function and effect. Those skilled in the art will understand that the terms "first" and "second" do not limit the quantity or execution order, and the terms "first" and "second" are not necessarily different.

[0043] The terms "installation," "connection," and "setting" mentioned in the embodiments of this application include direct installation / connection / setting as well as indirect installation / connection / setting; detachable installation / connection / setting as well as non-detachable installation / connection / setting; fixed installation / connection / setting as well as movable installation / connection / setting.

[0044] Please see Figures 1 to 8 The first aspect of this application provides a tool changing system. For example... Figure 1 As shown, the tool changing system includes a disc-type tool magazine 10 and two tool holder conveying mechanisms 30.

[0045] Please see Figure 2 The disc-type tool magazine 10 includes a tool disc 110, tool holders 120, and tool holder seats 130. The tool holders 120 are distributed around the outer circumferential edge of the tool disc 110 via the tool holder seats 130. Please refer to [link to relevant documentation]. Figure 1 , Figure 3 as well as Figure 4 Each tool holder conveying mechanism 30 includes a mounting base 330, a tool changer 350, and a pusher 310. One end of the mounting base 330 is fixed above the tool disc 110, and the other end of the mounting base 330 is provided with the tool changer 350, which extends out of the tool disc 110. The tool changer 350 has a receiving space 3501 for accommodating one tool holder 120 (see reference). Figure 4 The pusher 310 is movably mounted on the mounting base 330. The pusher 310 is used to push the tool holder 120 to switch between the tool holder seat 130 and the tool changer seat 350. The tool holder pushing directions of the two tool holder conveying mechanisms 30 are at a first included angle α.

[0046] In the embodiments of this application, the tool changing system includes a disc-type tool magazine 10 and a tool holder conveying mechanism 30. The tool holder conveying mechanism 30 has a pusher 310 and a tool changer 350, which is located outside the tool disc 110. The pusher 310 can push the tool holder 120 to switch between the tool holder seat 130 and the tool changer 350 on the tool disc 110, thereby reducing the number of spindle movements during tool changing and improving tool changing efficiency. Furthermore, the tool changing system includes a disc-type tool magazine 10 and two tool holder conveying mechanisms 30 extending outwards from the tool disc 110 in different directions, allowing one tool changing system to change tools for two spindles. A CNC machine tool equipped with this tool changing system is expected to be able to process two workpieces simultaneously.

[0047] Specifically, in Figure 1 as well as Figure 2 In this design, the cutter head 110 is a circular cutter head, with multiple tool holder seats 130 evenly distributed around its circumferential outer edge. Each tool holder seat 130 is equipped with a tool holder 120. Each tool holder 120 can hold one cutting tool 40. The cutter head 110 includes a disc body 1110, a support structure 1120, and a cutter head seat 1130. The disc body 1110 and the cutter head seat 1130 are connected by the support structure 1120. The support structure 1120 includes multiple support ribs 1121. The support ribs 1121 extend vertically upward from the outer edge of the cutter head seat 1130 and then continue to extend upward at an angle and outwards to the outer edge of the disc body 1110. The support ribs 1121 extend vertically upward and then extend at an angle and outwards, rather than directly extending upward at an angle and outwards, which saves the area occupied by the entire disc-type tool magazine 10 within the vertically upward extension height range. Weight reduction holes are provided on the support rib 1121. Each support rib 1121 has a reinforcing rib on both sides, which extends from the support rib 1121 to the disk body 1110 to further improve the structural strength of the support structure 1120.

[0048] exist Figure 2 In the disc-type tool magazine 10, a tool magazine mounting base 140 is also included. The tool magazine mounting base 140 further includes a tool magazine mounting base body, a tool magazine base plate 1410, and a tool disc connecting plate 1420. The tool disc connecting plate 1420 is located directly below the tool disc holder 1130 and is rotatably connected to the tool disc holder 1130. The tool disc connecting plate 1420 and the tool magazine base plate 1410 are respectively disposed at the top and bottom of the tool magazine mounting base body. A clearance space exists between the tool disc connecting plate 1420 and the tool magazine base plate 1410 (i.e., on the side of the tool magazine mounting base body). This clearance space accommodates a first speed reducer 150 for rotating the tool disc 110.

[0049] like Figure 1 as well as Figure 3As shown, the mounting base 330 of each tool holder conveying mechanism 30 includes a mounting base body 3310 and a mounting plate 3320. One end of the mounting base body 3310 is mounted above the central area of ​​the tool disc 110 via the mounting plate 3320, and the other end extends radially outward to the outside of the tool disc 110 and is provided with a tool changer 350. The central area of ​​the tool disc 110 is recessed downward, and the bottom of the mounting base body 3310 rises from the mounting plate 3320 at an incline to the tool changer 350, so that the center of gravity of the mounting base body 3310 is relatively close to the central area of ​​the tool disc 110, and the entire mounting base body 3310 is more securely installed.

[0050] like Figure 3 As shown, each tool holder conveying mechanism 30 also includes a drive element 320 and a buffer 340 with a buffer head. The fixed end of the drive element 320 is connected to the mounting base 330, and the output end of the drive element 320 is connected to the pusher 310. The drive element 320 includes a cylinder, a hydraulic cylinder, or a motor. The pusher 310 is located between the two ends of the mounting base 330 and is movable relative to the mounting base 330. The buffer 340 is mounted on the tool changer 350, and the buffer head is located directly in front of the tool holder in the ejection direction. The buffer 340 helps to reduce the impact and noise from the drive element 320.

[0051] Optionally, referring to Figures 5(a) and 5(b), in some embodiments of this application, the tool holder 120 includes two sets, one set of tool holders 120 and the other set of tool holders 120 are arranged in a one-to-one correspondence, and the two sets of tool holders 120 are respectively used in conjunction with two tool holder conveying mechanisms 30. The two correspondingly arranged tool holders 120 form a second included angle β with the line connecting them to the center of the cutter disc 110, and the size of the second included angle β is the same as the size of the first included angle α.

[0052] It should be noted that in Figures 5(a) and 5(b), the arrows indicate the direction of the tool holder's extension, and the number of tool holders 120 is merely an example. Specifically, as shown in Figure 5(a), one group of tool holders 120 is numbered 01#, 02#, ..., 08#, etc., while another group of tool holders 120 is numbered 11#, 12#, ..., 18#, etc. The line connecting tool holder 120 numbered 01# to the center of the cutter head 110 and the line connecting tool holder 120 numbered 11# to the center of the cutter head 110 form a second included angle β. Similarly, the lines connecting tool holder 120 numbered 02# to the center of the cutter head 110 and the line connecting tool holder 12# to the center of the cutter head 110 also form a second included angle β. The two correspondingly arranged tool holders 120 form a second included angle β with the line connecting them to the center of the cutter head 110. The size of the second included angle β is the same as the size of the first included angle α. Therefore, when one of the tool holders 120 in one set is facing the tool changer 350 of one tool holder conveying mechanism 30, one of the tool holders 120 in the other set is also facing the tool changer 350 of another tool holder conveying mechanism 30, so that the two sets of tool holders 120 can be pushed out to two different tool changers 350 at the same time. This tool changing system can change tools for two spindles, thereby enabling the machining of two workpieces in the same time period. As shown in Figure 5(b), in the specific case where the first included angle α and the second included angle β are both 180°, the tool holders 120 on the tool head 110 can be divided into two sets arranged in a one-to-one correspondence. The line connecting the tool changers 350 of the two tool holder conveying mechanisms 30 passes through the center of the tool head 110, and the line connecting the two correspondingly arranged tool holders also passes through the center of the tool head 110, so that this tool changing system can change tools for the two spindles on both sides of the disc tool magazine 10.

[0053] Furthermore, in some embodiments of this application, the size of the first included angle α and the size of the second included angle β are between 120° and 180°, that is, both the first included angle α and the second included angle β can take any angle value between 120° and 180° (including the two endpoint values ​​of 120° and 180°). When this tool changing system is applied to two machine tool bodies (i.e., one tool changing system changes tools for the spindles of two machine tool bodies), the beds of the two machine tool bodies can be arranged in different orientations as needed. For example, if the worktables of the two machine tool bodies (i.e., the first worktable and the second worktable) only rotate and do not move, then the disc-type tool magazine 10 is located between the first worktable and the second worktable. In the first example scenario, the angle between the lines connecting the first and second worktables to the disc-type tool magazine 10 is 150°. In the second example scenario, the angle between the lines connecting the first and second worktables to the disc-type tool magazine 10 is 180°. That is, the first worktable, the disc-type tool magazine 10, and the second worktable are roughly arranged in a straight line, with the disc-type tool magazine 10 located between the first and second worktables. In the first example scenario, the bed arrangement of the two machine tool bodies is more compact in a certain direction compared to the second example scenario.

[0054] Optionally, in some embodiments of this application, such as Figure 6 As shown, the tool holder 130 has a first guide structure 1310, the tool changer 350 has a second guide structure 3510, and the tool holder 120 has a sliding structure that is adapted to both the first guide structure 1310 and the second guide structure 3510. The first guide structure 1310 and the second guide structure 3510 are guide protrusions, and the sliding structure is a sliding groove. In normal operation, the tool holder 120 is placed on the tool holder 130 via the first guide structure 1310. During tool changing, the pusher 310 is used to push the tool holder 120 between the first guide structure 1310 and the second guide structure 3510. Through the cooperation of the sliding structure with the two guide structures, the tool holder 120 can be pushed without the tool holder 120 falling off, even without being clamped by grippers. The tool holder 120 does not need to wait to be clamped by grippers before being pushed out.

[0055] Furthermore, in some embodiments of this application, such as Figure 6As shown, at least one of the multiple tool holder seats 130 has a first guide structure 1310 that is flush with a second guide structure 3510 (i.e., the first guide structure 1310 on the tool holder seat 130 in the tool changing position of the tool disc 110 is flush with the second guide structure 3510 on the tool changer seat 350), and the distance between them is less than the length of the sliding structure. "Flush" means that they are flush in the height direction and also flush in another horizontal direction perpendicular to the push-out direction of the tool holder 120. The flush alignment of the two guide structures allows the sliding structure of the tool holder 120 to smoothly engage with the other guide structure without adjustment after the engagement with one guide structure is disengaged. The distance between the two guide structures that are level with each other is less than the length of the sliding structure. Thus, the sliding structure on the tool holder 120 can immediately enter a new guiding relationship with the second guide structure 3510 / first guide structure 1310 before it has disengaged from the first guide structure 1310 / second guide structure 3510. This prevents the tool holder 120 from falling off when it is pushed through the space between the two guide structures.

[0056] Furthermore, in some embodiments of this application, such as Figure 6 As shown, the first guide structure 1310 and the second guide structure 3510 are respectively provided with guide portions 1311 and 3511 at their extended ends. The sliding structure on the tool holder 120 includes a groove-shaped structure, into which the first guide structure 1310 and the second guide structure 3510 can be inserted. The cross-sections of the guide portions 1311 of the first guide structure 1310 and 3511 of the second guide structure 3510 gradually decrease along their extending direction. The cooperation between the guide portion and the sliding structure is similar to the cooperation between a slider and a groove. The size relationship between the two is configured such that a relatively smaller slider cooperates with a relatively larger groove, thereby guiding the slider-like structure into the groove-like structure.

[0057] Optionally, in some embodiments of this application, such as Figure 7 As shown, the pusher 310 includes a first pusher 3110 and a second pusher 3120 disposed opposite to each other. The space between the first pusher 3110 and the second pusher 3120 allows the tool sleeves 120 in the circumferential direction of the cutter head 110 to pass through one by one. Thus, without the two pushers moving or rotating, the tool sleeve 120 where the target tool is located can come into the space defined by the two pushers as the cutter head 110 rotates.

[0058] Specifically, the first pushing part 3110 is used to push the tool holder 120 from the tool holder seat 130 of the disc-type tool magazine 10 to the position of the tool changer 350, while the second pushing part 3120 is used to push the tool holder 120 back from the position of the tool changer 350 onto the tool holder seat 130. The first pushing part 3110 and the second pushing part 3120 are distributed at intervals in the pushing direction of the tool holder 120, with the second pushing part 3120 located directly in front of the first pushing part 3110 in the pushing direction of the tool holder 120. The space defined by the first pushing part 3110 and the second pushing part 3120 allows a tool holder 120 to pass through.

[0059] like Figure 7 As shown, the pusher 310 also includes a pusher base 3130, which is mounted between the two ends of the mounting base 330 and is movable relative to the mounting base 330. A first pusher 3110 and a second pusher 3120 extend downward from the pusher base 3130. The pusher base 3130 can move to a position close to the tool changer 350, meaning the pusher can push the tool holder 120 as far as possible to the position of the tool changer 350. The first guide structure 1310 on the tool holder 130 at the tool changer position of the tool disc 110 and the second guide structure 3510 on the tool changer 350 extend in the same direction. The pusher base 3130 is provided with an oblong hole 3140. At least one of the first pusher 3110 and the second pusher 3120 is connected to the pusher base 3130 by a threaded fastener engaging with the oblong hole 3140. The length direction of the oblong hole 3140 is parallel to the direction from the first pusher 3110 to the second pusher 3120. The oblong hole 3140 allows for increasing or decreasing the distance between the first pusher 3110 and the second pusher 3120 in the pushing direction of the tool holder 120, thereby accommodating tool holders 120 of different sizes.

[0060] Optionally, in some embodiments of this application, such as Figure 1 as well as Figure 8 As shown, the tool changing system also includes two tool changing mechanisms 20, which are correspondingly arranged with the tool changing seats 350 of the two tool holder conveying mechanisms 30. Each tool changing mechanism 20 has a tool changing arm 210 that can rotate around its own center point, and each tool changing arm 210 has clamping portions 2110 at both ends. In the tool changing state of one tool changing arm 210, the clamping portion 2110 at one end of the tool changing arm 210 is located below one tool changing seat 350; in the tool changing state of the other tool changing arm 210, the clamping portion 2110 at one end of the tool changing arm 210 is located below the other tool changing seat 350. Specifically, Figure 8 It is also shown that a second reducer 220 for driving the tool changer 210 to rotate is installed below the tool changer 210.

[0061] A second aspect of this application provides a CNC machine tool. Please refer to... Figure 9 In some embodiments of this application, the CNC machine tool includes two spindles and a tool changing system as described in any of the preceding embodiments. The CNC machine tool also includes a control system for controlling the operation of the tool changing system and the two spindles. The tool changing system is capable of changing tools 40 for the two spindles, thereby enabling the simultaneous machining of two workpieces with only one tool magazine.

[0062] Optionally, please refer to Figure 9 In some embodiments of this application, the CNC machine tool includes two machine tool bodies, each machine tool body including a spindle box 50, a crossbeam 60, a bed 70, and a cradle turntable; the bed 70 includes a base 710 and two side plates 720 arranged on both sides of the base 710, the extension direction of the tool sleeve 120 is parallel to the extension direction of the side plate 720, the crossbeam 60 is mounted on the two side plates 720, the spindle box 50 is mounted on the crossbeam 60, the spindle is mounted on the spindle box 50, and the cradle turntable is arranged on the bed 70 and located below the spindle box 50; the disc-type tool magazine 10 is located below the two crossbeams 60 and at least partially located between the two crossbeams 60 in the horizontal direction, and the spindle boxes 50 of the two machine tool bodies are respectively mounted on the opposite sides of the two crossbeams 60. Since the extension direction of the side plate 720 is parallel to the tool holder ejection direction, the included angle between the extension directions of adjacent side plates 720 of the two machine tool bodies can be adjusted according to the actual layout of the entire CNC machine tool, thereby reducing the floor space. Preferably, the included angle between the extension directions of adjacent side plates 720 of the two machine tool bodies is between 120° and 180°. Figure 9 The angle between the extending directions of the adjacent side plates 720 of the two machine tool bodies is 180°, which is only one example. Figure 9 The X-axis and Y-axis directions are shown, while the Z-axis direction (not shown) is perpendicular to both the X-axis and Y-axis directions. Side plates 720 extend along the Y-axis, and crossbeams 60 extend along the X-axis. Crossbeams 60 are mounted on the side plates 720 and are movable relative to the side plates 720 along the Y-axis. Viewed from the Z-axis, the disc tool magazine 10 is located below the crossbeams 60; viewed from the Y-axis, the disc tool magazine 10 is also at least partially located between the two crossbeams 60. Viewed from the Y-axis, there is a tool changing mechanism 20 on each of the outer sides of the disc tool magazine 10. Viewed from the Y-axis, there is a tool holder conveying mechanism 30 between the center of the disc tool magazine 10 and the two tool changing mechanisms 20 on each side. Each of the two crossbeams 60 has a spindle box 50 on its opposite sides.

[0063] For further information, please refer to [link / reference]. Figure 9In some embodiments of this application, the beds 70 of the two machine tool bodies are integrally formed. Each side plate 720 has a mounting groove 721 at the end away from the disc-type tool magazine 10. The groove surface of the mounting groove 721 is arc-shaped, and the opening of the mounting groove 721 faces away from the disc-type tool magazine 10. The rotating shaft of the cradle turntable is mounted on the side plate 720 through the mounting groove 721. Compared with the traditional mounting method of the cradle turntable shaft, the use of an open mounting groove to mount the shaft is more convenient to operate.

[0064] The above-listed embodiments are merely preferred embodiments of this application and should not be construed as limiting the scope of this application. Therefore, any equivalent variations made in accordance with the claims of this application shall still fall within the scope of this application.

Claims

1. A tool changing system, comprising a disc-type tool magazine, the disc-type tool magazine including a tool disc, tool sleeves, and tool sleeve seats, the tool disc being a circular tool disc, the tool sleeves being distributed around the outer edge of the tool disc via the tool sleeve seats, characterized in that, The tool changing system also includes: Two tool holder conveying mechanisms are provided. Each tool holder conveying mechanism includes a mounting base, a tool changer, and a pusher. One end of the mounting base is fixed above the tool disc, and the other end of the mounting base is provided with the tool changer and extends out of the tool disc. The tool changer has a receiving space for accommodating one tool holder. The pusher is movably disposed on the mounting base and is used to push the tool holder to switch between the tool holder and the tool changer. The tool holder extension directions of the two tool holder conveying mechanisms form a first included angle, and the two tool holder conveying mechanisms extend out of the tool disc in different directions. The blade sheath includes two sets, one set of blade sheaths and the other set of blade sheaths are arranged in a one-to-one correspondence, and the two blade sheaths arranged in a corresponding manner form a second angle with the line connecting the center of the blade disc, and the size of the second angle is the same as the size of the first angle. The tool holder has a first guide structure, the tool changer has a second guide structure, and the tool holder has a sliding structure that is adapted to both the first guide structure and the second guide structure. The pusher includes a pusher base and a first pusher and a second pusher disposed opposite to each other. The pusher base is mounted between the two ends of the mounting base and is movable relative to the mounting base. The first pusher and the second pusher extend downward from the pusher base. The pusher base is provided with an oblong hole. At least one of the first pusher and the second pusher is connected to the pusher base by a threaded fastener engaging with the oblong hole. The length direction of the oblong hole is parallel to the direction from the first pusher to the second pusher.

2. The tool changing system according to claim 1, characterized in that, The size of the second included angle is between 120° and 180° from the size of the first included angle.

3. The tool changing system according to claim 1, characterized in that, The first guide structure and the second guide structure are guide protrusions, and the sliding structure is a sliding groove.

4. The tool changing system according to claim 3, characterized in that, The first guide structure on at least one of the plurality of tool holders is flush with the second guide structure and the distance between them is less than the length of the sliding structure.

5. The tool changing system according to claim 4, characterized in that, The pusher includes a first pusher portion and a second pusher portion disposed opposite to each other, wherein the space between the first pusher portion and the second pusher portion allows the cutter sleeves to pass through one by one in the circumferential direction of the cutter head.

6. The tool changing system according to any one of claims 1 to 5, characterized in that, The tool changing system also includes two tool changing mechanisms, which are correspondingly arranged with the tool changing seats of the two tool sleeve conveying mechanisms. Each tool changing mechanism has a tool changing arm that can rotate around its own center point, and each tool changing arm has a clamping part at both ends. In the tool changing state of one of the tool changing arms, the clamping part at one end of the tool changing arm is located below one of the tool changing seats; in the tool changing state of the other tool changing arm, the clamping part at one end of the tool changing arm is located below the other tool changing seat.

7. A CNC machine tool, characterized in that, It includes two spindles, a tool changing system as described in any one of claims 1 to 6, and a control system, wherein the control system is used to control the operation of the tool changing system and the two spindles, and the tool changing system is used to provide tools to the two spindles.

8. The CNC machine tool according to claim 7, characterized in that, The CNC machine tool includes two machine tool bodies, each machine tool body including a spindle box, a crossbeam, a bed and a cradle rotary table; The bed includes a base and two side plates on both sides of the base. The extension direction of the tool sleeve is parallel to the extension direction of the side plates. The crossbeam is mounted on the two side plates. The spindle box is mounted on the crossbeam. The spindle is mounted on the spindle box. The cradle turntable is mounted on the bed and located below the spindle box. The disc-type tool magazine is located below the two crossbeams and at least partially between the two crossbeams in the horizontal direction, and the spindle boxes of the two machine tool bodies are respectively mounted on the opposite sides of the two crossbeams.

9. The CNC machine tool according to claim 8, characterized in that, The beds of the two machine tool bodies are integrally formed. Each side plate has a mounting groove at the end away from the disc tool magazine. The groove surface of the mounting groove is arc-shaped, and the opening of the mounting groove faces away from the disc tool magazine. The rotating shaft of the cradle turntable is mounted on the side plate through the mounting groove.

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