Tool magazine and numerical control machine tool

Abstract

The invention provides a tool magazine and a numerical control machine tool, the tool magazine comprises a tool magazine seat frame, a rotating tool rest and tool clamping mechanisms, the tool magazine seat frame is provided with a rotating driving mechanism, the rotating tool rest comprises a rotating shaft, the rotating driving mechanism is in driving connection with the rotating shaft, and the multiple rows of tool clamping mechanisms are installed on the rotating tool rest; each row of cutter clamping mechanisms are arranged at intervals in the axial direction of the rotating shaft; the rotating tool rest comprises m rotating arms which are connected with the rotating shaft and extend in the axial direction of the rotating shaft, n rows of tool clamping mechanisms are installed on the side face of each rotating arm at intervals, the normal directions of the end faces of tool clamps of the n rows of tool clamping mechanisms on the same rotating arm are parallel to each other or away from each other, and m and n are natural numbers not smaller than 2. By the adoption of the tool magazine, the tool containing capacity is effectively improved, the number of parts is reduced, and the whole tool magazine is more compact.

Description

Technical Field

[0001] The present application relates to the technical field of machine tools, and in particular to a tool magazine and a CNC machine tool. Background Art

[0002] Modern manufacturing industry has higher and higher requirements for processing efficiency, and multi-head machining centers with multiple spindles have come into being. Traditional multi-head machining centers mostly use straight-row tool magazines or chain tool magazines. In the process of tool change, all the tools in the straight-row tool magazine will be exposed in the processing area, so waste chips and cutting fluid will easily fall onto the tool handle, affecting the stability of tool change; although the chain tool magazine does not expose all the tools in the entire tool magazine in the processing area, its cost is high and the space utilization rate of the tool magazine is low.

[0003] Existing Chinese patent document CN213004011U proposes a circumferential straight-row tool magazine for CNC machine tools, which has a rotating tool holder and multiple tool rows arranged at intervals along the circumference of the rotating tool holder, and each tool row includes multiple tools arranged at intervals along the axial direction of the rotating tool holder.

[0004] However, in order to reduce the interference between the tool changing mechanism and the adjacent tool row during the tool changing process, the rotation radius of the rotary tool holder must be set large enough. Therefore, the tool magazine cannot further improve the space utilization rate, and its volume is still slightly bloated. Summary of the invention

[0005] The embodiments of the present application are intended to solve at least one of the existing technical problems. The embodiments of the present application provide a tool magazine and a CNC machine tool, which further improve the space utilization of the tool magazine at a lower cost.

[0006] The relevant technical solutions of the embodiments of the present application include the following:

[0007] A first aspect of an embodiment of the present application provides a tool magazine. The tool magazine comprises:

[0008] A tool magazine frame, wherein the tool magazine frame is equipped with a rotary drive mechanism;

[0009] A rotating tool holder, wherein the rotating tool holder is provided with a rotating shaft, and the rotating drive mechanism is drivingly connected to the rotating shaft; and

[0010] A tool clamping mechanism, the tool clamping mechanism comprises a plurality of rows and is mounted on the rotating tool holder, each row of tool clamping mechanisms is arranged at intervals along the axial direction of the rotating shaft, and the tool clamping mechanism has a tool clamp for clamping a tool;

[0011] Wherein, the rotating tool holder includes m rotating arms, the m rotating arms are connected to the rotating shaft and extend along the axial direction of the rotating shaft, each rotating arm is provided with n rows of tool clamping mechanisms installed at intervals on its side, the normal directions of the end faces of the tool clamps of the n rows of tool clamping mechanisms on the same rotating arm are parallel to or far away from each other, and the normal directions of the end faces of the tool clamps of the tool clamping mechanisms on different rotating arms are arranged counterclockwise or clockwise, wherein m and n are both natural numbers not less than 2.

[0012] Optionally, the tool clamping mechanism further comprises an extension member, and at least some of the tool clamps of the n rows of tool clamping mechanisms are mounted on the side surface of each rotating arm via the extension member, and the end surfaces of the tool clamps of different rows of tool clamping mechanisms have different distances from the side surface of the rotating arm.

[0013] Optionally, a step structure is provided on the side of the rotating arm where the tool clamping mechanism is installed, and the n rows of tool clamping mechanisms are respectively installed on different step surfaces of the step structure of the rotating arm.

[0014] Optionally, the m rotating arms intersect with each other at the rotating shaft, and projections of the m rotating arms on a plane perpendicular to the axial direction of the rotating shaft extend outwardly from the rotating shaft along a straight line, a broken line or a curve.

[0015] Optionally, the rotating tool holder also includes a central frame, the m rotating arms are mounted on the central frame and extend outward from the central frame along a straight line, a broken line or a curve, and the projection contour of the central frame on a plane perpendicular to the axial direction of the rotating shaft is a polygon or a circle.

[0016] Optionally, on a projection plane perpendicular to the axial direction of the rotating shaft, an extension direction of the rotating arm forms an angle α with a normal direction of its installation position on the central frame, wherein the angle α is greater than 0° and not greater than 90°.

[0017] Optionally, the tool magazine frame includes a first side plate, a second side plate and a connecting plate, wherein the first side plate and the second side plate are arranged opposite to each other and are respectively located on both sides of the axial middle position of the rotating shaft, the connecting plate extends along the axial direction of the rotating shaft, and the first side plate and the second side plate are connected through the connecting plate; at least one of the first side plate and the second side plate is installed with the rotating drive mechanism, and the rotating drive mechanism includes a motor with an output shaft and a synchronous belt transmission mechanism, wherein the synchronous belt transmission mechanism includes a driving pulley and a driven pulley, and the output shaft of the motor, the driving pulley, the driven pulley and the rotating shaft are sequentially connected in transmission.

[0018] A second aspect of the embodiments of the present application provides a CNC machine tool, which includes a plurality of spindles and a tool magazine as described in one of the aforementioned embodiments, wherein the plurality of spindles are arranged at intervals along a straight line.

[0019] Optionally, the CNC machine tool includes a machine tool base, a tool magazine mounting frame and a tool changing mechanism, the tool changing mechanism can switch between a position corresponding to the spindle and a position corresponding to the tool magazine, the tool magazine is installed on the machine tool base through the tool magazine mounting frame, the tool magazine frame is driven by a first lifting drive mechanism to be lifted and lowered in a vertical direction relative to the tool magazine mounting frame, the tool magazine mounting frame is provided with a tool magazine protective door, and the tool magazine protective door is driven by a second lifting drive mechanism to be lifted and lowered in a vertical direction relative to the tool magazine mounting frame.

[0020] Optionally, the CNC machine tool has a plurality of spindle boxes, each of which is equipped with a spindle, the arrangement direction of the plurality of spindles is parallel to the arrangement direction of the tool clamping mechanisms of any row of the tool magazine, and the rotating shaft of the rotating tool holder is arranged horizontally;

[0021] The CNC machine tool also includes a workbench and a gantry structure. The gantry structure includes two columns and a horizontally placed beam. The two columns are fixed on the machine tool base. The two ends of the beam are respectively fixed to the tops of the two columns. The spindle box can move in the vertical and horizontal directions relative to the machine tool base. The workbench can move in the horizontal direction relative to the machine tool base. The workbench and the tool magazine are respectively located on both sides of the gantry structure.

[0022] The technical solution for the tool magazine in the embodiment of the present application has at least the following technical effects: (1) The tool magazine includes a rotating tool holder having m rotating arms, the length direction of the rotating arms is parallel to the axial direction of the rotating shaft, and each rotating arm is provided with n rows of tool clamping mechanisms installed on its side in a direction perpendicular to the axial direction of the rotating shaft. Compared with installing the tool clamping mechanism on the end face of the rotating arm away from the rotating shaft, installing the tool clamping mechanism on the side of the rotating arm can effectively reduce the space occupied by the rotating tool holder after the tool clamping mechanism is installed, thereby making the structure of the entire tool magazine more compact; (2) The length direction of the rotating arm is parallel to the axial direction of the rotating shaft and the side of the rotating arm is used as the mounting bracket of the tool clamping mechanism, and there is no need to additionally set up a lateral mounting bracket for providing a mounting platform for the same row of tool clamping mechanisms, thereby reducing the number of parts of the tool magazine to a certain extent; (3) Installing n rows of tool clamping mechanisms on one rotating arm can increase the tool capacity of the tool magazine when the number of rotating arms is determined, thereby taking into account both the reduction of tool magazine cost and the increase of tool capacity.

[0023] It is not difficult to understand that the relevant technical solutions of the CNC machine tool in the embodiment of the present application at least have the corresponding technical effects of the technical solutions of the tool magazine, which will not be repeated here.

[0024] Additional aspects and advantages of the embodiments of the present application will be partially given in the following description. Thus, in part, they will become apparent from the following description or be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the structure of the tool magazine in some embodiments of the present application;

[0026] FIG. 2( a ) is a schematic structural diagram of a rotary tool holder and a tool clamping mechanism in some embodiments of the present application;

[0027] Fig. 2(b) is a front view of Fig. 2(a);

[0028] Figure 3 It is a simplified schematic diagram of a rotating tool holder in some embodiments of the present application, including situations (a) to (i);

[0029] Figure 4 It is a schematic diagram of the structure of the rotating tool holder and the tool clamping mechanism in some embodiments of the present application, wherein a step structure is provided on the side of the rotating arm;

[0030] Figure 5 This is a schematic diagram of the structure of the tool magazine, tool magazine protection door and tool magazine mounting frame in some embodiments of the present application.

[0031] In the figure:

[0032] 10-tool magazine; 110-tool magazine frame, 111-first side plate, 112-second side plate, 113-connecting plate; 120-rotating tool holder, 121-rotating arm, 122-rotating shaft, 123-central frame; 130-tool clamping mechanism, 131-tool clamp, 132-extension member; 140-rotation driving mechanism, 141-motor, 142-driven pulley;

[0033] 20-tool magazine mounting frame, 21-tool magazine protective door, 22-first lifting drive mechanism, 23-tool magazine protective door guide assembly.

[0034] n 1 - The normal direction of the end face of the tool holder of the first row of tool clamping mechanisms, n 2 - normal direction of the end face of the tool holder of the second row tool clamping mechanism, a- axial direction of the rotating shaft, p- step structure, s- side surface of the rotating arm, n*- normal direction of the installation position of the rotating arm on the central frame, u- extension direction of the rotating arm in the projection plane, α- angle. DETAILED DESCRIPTION

[0035] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments of the present application or the description of the prior art will be briefly introduced below.

[0036] Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, without paying creative work, drawings of other embodiments can also be obtained according to the technical solutions shown in these drawings.

[0037] It should be understood that the "plurality" mentioned herein refers to two or more than two. In the description of this application, unless otherwise specified, " / " means or, for example, "A / B" means A or B; "and / or" in this article is only a description of the association relationship of the associated objects, which means that there can be three kinds of relationships, for example, "A and / or B" can mean: A exists alone, A and B exist at the same time, B exists alone, etc.

[0038] In addition, in order to clearly describe the technical solutions of the embodiments of the present application, in the embodiments of the present application, expressions such as "first" or "second" are used to distinguish the same items or similar items with substantially the same functions and effects. Those skilled in the art can understand that expressions such as "first" and "second" do not limit the quantity and execution order, and expressions such as "first" and "second" do not necessarily mean that they are different.

[0039] The "installation", "connection" and "setting" mentioned in the embodiments of the present application include direct installation / connection / setting, as well as indirect installation / connection / setting; include detachable installation / connection / setting, as well as non-detachable installation / connection / setting; include fixed installation / connection / setting, as well as movable installation / connection / setting.

[0040] See also Figures 1 to 4 The first aspect of the embodiment of the present application provides a tool magazine 10. Figure 1 As shown, in some embodiments, the tool magazine 10 includes a tool magazine frame 110, a rotating tool holder 120, and a tool clamping mechanism 130. A rotating drive mechanism 140 is installed on the tool magazine frame 110; as shown in FIG2(a) and FIG2(b), the rotating tool holder 120 is provided with a rotating shaft 122, and the rotating drive mechanism 140 is drivingly connected to the rotating shaft 122, and the rotating tool holder 120 is driven by the rotating drive mechanism 140 to rotate around the rotating shaft 122; the tool clamping mechanism 130 includes a plurality of rows and is installed on the rotating tool holder 120, and each row of the tool clamping mechanisms 130 is arranged at intervals along the axial direction a of the rotating shaft 122, and the tool clamping mechanism 130 has a tool holder 131 for clamping a tool.

[0041] Installing multiple tool clamping mechanisms 130 on the rotating tool holder 120 improves the space utilization of the tool magazine compared to a chain-type tool magazine, and reduces the area of ​​tools directly facing the falling waste chips compared to a straight-row tool magazine (at a certain moment, only the tools rotated to the top of the rotating tool holder 120 will face the falling waste chips, and the bottom or even the sides are less likely to encounter waste chips).

[0042] Please continue reading Figure 2(a) to Figure 2(b) as well as Figure 3 In (a) to (i), the rotating tool holder 120 includes m rotating arms 121, the m rotating arms 121 revolve around the rotating shaft 122, and the length direction of the rotating arms 121 is parallel to the axial direction a of the rotating shaft 122. In other words, the m rotating arms 121 are connected to the rotating shaft 122 and the rotating arms 121 extend along the axial direction a of the rotating shaft 122. It is understood that the shape of the rotating arms 121 is not limited to Figure 1 2(a) and 2(b), and is not limited to a straight plate. A curved plate, a folded plate or a rod shape may also be used as required. When viewed from the projection of the axial direction a of the rotating shaft 122, the m rotating arms 121 are connected to the rotating shaft 122, including at least the following situations: the ends of the m rotating arms 121 meet at the same point (e.g. Figure 3 (a)); the ends of the m rotating arms 121 are fixedly connected to different points on the circumference of the central frame 123, and the extension lines of the m rotating arms 121 can intersect at the same point, that is, the center of the central frame 123, and the rotating shaft 122 passes through the central frame 123 (for example Figure 3 (b)), so that the rotating arm 121 is indirectly connected to the rotating shaft 122; the ends of the m rotating arms 121 are fixedly connected to different points on the circumference of the central frame 123, and the rotating shaft 122 passes through the central frame 123 (for example Figure 3 (c) in the figure), so that the rotating arm 121 is indirectly connected to the rotating shaft 122, but the ends of the m rotating arms 121 and their extension lines cannot meet at the same point, and the extension direction u of each rotating arm 121 deviates from the normal direction n* of the fixed connection point between it and the central frame 123 by an angle (for example Figure 3 (c) in the figure.

[0043] As shown in FIG2(a), each rotating arm 121 is provided with n rows of tool clamping mechanisms 130 at intervals on its side surface s, where "side surface" refers to the surface of each rotating arm 121 facing its adjacent rotating arm 121, and m and n are both natural numbers not less than 2. Preferably, m is a natural number not less than 3. Therefore, by using m rotating arms 121, m×n rows of tool clamping mechanisms 130 can be installed, which significantly increases the tool holding capacity of the tool magazine 10.

[0044] In FIG. 2( a) and FIG. 2( b), the tool magazine 10 has four rotating arms 121 (i.e., m=4), and each rotating arm 121 has two rows of tool clamping mechanisms 130 (i.e., n=2) installed on its side surface along a direction perpendicular to the axial direction a of the rotating shaft 122. However, it should be understood that the number of rotating arms 121 and the number of rows of tool clamping mechanisms 130 on the same rotating arm 121 are only examples and do not constitute a limitation to the present application.

[0045] As shown in FIG2(a), the normal directions of the end faces of the tool holders 131 of the n-row tool holding mechanisms 130 on the same rotating arm 121 are parallel to or away from each other. In FIG2(a), the normal direction n of the end faces of the tool holders 131 of the first row tool holding mechanisms 130 is 1 The normal direction n of the end surface of the tool holder 131 of the second row tool clamping mechanism 130 is 2 Parallel to each other. It is understandable that the normal directions of the end faces of the tool clamps 131 of the n rows of tool clamping mechanisms 130 on the same rotating arm 121 are away from each other, which can also prevent the two adjacent rows of tool clamping mechanisms 130 from getting closer and closer, thereby reducing the possibility of mutual interference during the tool change process. In Figure 2(a), the extension directions of the two rows of tool clamping mechanisms 130 are perpendicular to the side s. However, it is understandable that the extension direction of the tool clamping mechanism 130 is parallel to the side s, or the extension direction of the tool clamping mechanism 130 is at an acute angle to the side s.

[0046] The normal directions of the end faces of the tool clamps 131 of the tool clamping mechanisms 130 on different rotating arms 121 are arranged counterclockwise or clockwise, so that multiple rows of tool clamping mechanisms 130 can be arranged neatly and orderly in the same direction, and the possibility of mutual interference during tool changing is reduced.

[0047] Compared with installing the tool clamping mechanism 130 on the end face of the rotating arm 121 away from the rotating shaft 122 (such as the prior art document CN213004011U), the embodiment of the present application installs the tool clamping mechanism 130 on the side s of the rotating arm 121, which can effectively reduce the space occupied by the rotating tool holder 120 after the tool clamping mechanism 130 is installed, thereby making the structure of the entire tool magazine 10 more compact. The length direction of the rotating arm 121 of the embodiment of the present application is parallel to the axial direction a of the rotating shaft 122 and the side s of the rotating arm 121 is used as the mounting bracket of the tool clamping mechanism 130, and there is no need to additionally set up a lateral mounting bracket for providing a mounting platform for the same row of tool clamping mechanisms 130 (please refer to the prior art document CN213004011U), thereby reducing the number of parts of the tool magazine 10 to a certain extent. In the embodiment of the present application, n rows of tool clamping mechanisms 130 are installed on one rotating arm 121, which can increase the tool holding capacity of the tool magazine 10 when the number of rotating arms 121 is determined, thereby taking into account both the reduction of tool magazine cost and the increase of tool holding capacity.

[0048] Optionally, in some embodiments of the present application, the tool clamping mechanism 130 further includes an extension member 132, that is, the tool clamping mechanism 130 includes a tool clamp 131 and an extension member 132 (in Figure 1 2(a) and 2(b), the tool clamp 131 is not shown). At least some of the rows of tool clamps 131 of the n rows of tool clamping mechanisms 130 are mounted on the side s of each rotating arm 121 through an extension member 132, and the end faces of the tool clamps 131 of different rows of tool clamping mechanisms 130 are at different distances from the side s of the rotating arm 121. For example, one of the two rows of tool clamping mechanisms 130 is equipped with an extension member (such as an extension plate, or an extension rod, an extension block, etc.), so that its end face is farther from the side s than the end face of the tool clamps 131 of the other row. In the above manner, the tool clamping mechanisms 130 of different rows are at different distances from the tool changing mechanism during the tool changing process, that is, they are staggered from each other, thereby effectively avoiding touching non-target tool clamping mechanisms during the tool changing process.

[0049] Optionally, in some embodiments of the present application, Figure 4 As shown, the rotating arm 121 is provided with a step structure p on the side s where the tool clamping mechanism 130 is installed, and the n rows of tool clamping mechanisms 130 are respectively installed on different step surfaces of the step structure p of the rotating arm 121. The setting of the step structure p can also make the tool clamping mechanisms 130 in different rows have different distances from the tool changing mechanism during the tool changing process, so as to be staggered with each other.

[0050] Optionally, in some embodiments of the present application, please refer to Figure 3, the m rotating arms 121 intersect each other at the rotating shaft 122, and the projections of the m rotating arms 121 on a plane perpendicular to the axial direction a of the rotating shaft 122 are along a straight line (eg Figure 3 (a), (b) and (c) in the figure), broken lines (e.g. Figure 3 (d), (e) and (f)) or curves (e.g. Figure 3 As mentioned above, by installing the tool holding mechanism 130 on the side s of the rotating arm 121, the structure of the entire tool magazine 10 can be made compact. The projection of the rotating arm 121 extends along a broken line or a curve, which can further make the structure of the entire tool magazine 10 compact.

[0051] Optionally, in some embodiments of the present application, please refer to Figure 3 The rotating tool holder 120 further includes a central frame 123, and m rotating arms 121 are all mounted on the central frame 123 and extend from the central frame 123 along a straight line (eg Figure 3 (b) and (c)), broken lines (e.g. Figure 3 (e) and (f) in the figure) or curves (e.g. Figure 3 (h) and (i)) in the figure extend outwardly, and the projection profile of the central frame 123 on the plane perpendicular to the axial direction a of the rotating shaft 122 is a polygon or a circle. Compared with the structure in which the rotating arms 121 directly intersect on the axis, the central frame 123 is used to support one end of each rotating arm 121, and the mechanical properties of the entire rotating tool holder 120 are better.

[0052] Optionally, in some embodiments of the present application, please refer to Figure 3 In (c), (f) and (i), on the projection plane perpendicular to the axial direction a of the rotating shaft 122, the extension direction u of the rotating arm 121 and the normal direction n* of the installation position of the rotating arm 121 on the central frame 123 form an angle α, wherein the angle α is greater than 0° and not greater than 90°. The normal direction n* of the installation position of the rotating arm 121 on the central frame 123 is the direction that increases the space occupied by the tool magazine 10 the fastest. Deviating the extension direction u of the rotating arm 121 from this direction by a certain angle also helps to make the structure of the tool magazine 10 more compact.

[0053] Optionally, in some embodiments of the present application, please continue to refer to Figure 1The tool magazine frame 110 includes a first side plate 111, a second side plate 112 and a connecting plate 113, wherein the first side plate 111 and the second side plate 112 are arranged opposite to each other and are respectively located on both sides of the middle position of the axial direction a of the rotating shaft 122, the connecting plate 123 extends along the axial direction a of the rotating shaft 122, and the first side plate 111 and the second side plate 112 are connected by the connecting plate 113; at least one of the first side plate 111 and the second side plate 112 is installed with a rotating drive mechanism 140, the rotating drive mechanism 140 includes a motor 141 with an output shaft and a synchronous belt transmission mechanism, wherein the synchronous belt transmission mechanism includes a driving pulley and a driven pulley 142, and the output shaft of the motor, the driving pulley, the driven pulley 142 and the rotating shaft 122 are sequentially connected in transmission. The first side plate 111, the second side plate 112 and the connecting plate 113 form a support structure that partially surrounds the rotating tool holder 120 in one direction, providing a mounting bracket for the rotating drive mechanism 140 and the rotating tool holder 120 without hindering the rotation of the rotating tool holder 120 and its movement in other directions.

[0054] The second aspect of the embodiments of the present application provides a CNC machine tool. In some embodiments of the present application, the CNC machine tool includes a plurality of spindles, and also includes the tool magazine 10 as described in one of the embodiments described above, wherein the plurality of spindles are arranged at intervals along a straight line. The CNC machine tool with a plurality of spindles has a higher processing efficiency. The tool magazine 10 as described in one of the embodiments of the present application described above can achieve a larger tool capacity at a lower cost, and the structure of the entire CNC machine tool can be more compact.

[0055] For example, the specific structural arrangement of the CNC machine tool can be as follows: the CNC machine tool includes four spindles arranged at intervals along a straight line, and the tool clamping mechanisms 130 of any row of the tool magazine 10 are arranged at intervals along a straight line, and the arrangement directions of the two are parallel. There are 16 tool clamping mechanisms 130 in any row, and the 16 tool clamping mechanisms 130 can be divided into 4 groups, and the tools on the tool clamping mechanisms 130 of the 1st to 4th positions corresponding to the first spindle are used in conjunction with the spindle, the tools on the tool clamping mechanisms 130 of the 5th to 8th positions corresponding to the second spindle are used in conjunction with the spindle, and ... the tools on the tool clamping mechanisms 130 of the 13th to 16th positions corresponding to the fourth spindle are used in conjunction with the spindle.

[0056] Optionally, in some embodiments of the present application, please refer to Figure 5The numerical control machine tool includes a machine tool base, a tool magazine mounting frame 20 and a tool changing mechanism, and the tool changing mechanism can switch between a position corresponding to the spindle and a position corresponding to the tool magazine 10. The tool magazine 10 is installed on the machine tool base through the tool magazine mounting frame 20, and the tool magazine frame 110 is driven by the first lifting drive mechanism 22 to rise and fall in the vertical direction relative to the tool magazine mounting frame 20. The tool magazine mounting frame 20 is provided with a tool magazine protection door 21, and the tool magazine protection door 21 is driven by the second lifting drive mechanism to rise and fall in the vertical direction relative to the tool magazine mounting frame 20. The tool magazine protection door 21 and the connecting plate 113 of the tool magazine frame 110 are both on the same side of the rotating tool holder 120. When the tool changing mechanism approaches the position of the tool magazine 10, under the drive of the second lifting drive mechanism, the tool magazine protection door 21 slides and rises along the tool magazine protection door guide assembly 23, so that the tool changing mechanism enters the area range of the rotating tool holder 120 for tool changing. At other times, the tool magazine protection door 21 descends and returns to the normal position, thereby protecting the tool magazine 10. In addition, the tool magazine frame 110 is driven by another independent driving mechanism (i.e., the first lifting driving mechanism 22), which can drive the rotating tool holder 120 to rise and fall in the vertical direction, so that the rotating tool holder 120 can not only rotate but also rise and fall in the vertical direction. The lifting movement enables the tool changing mechanism to avoid by lifting when changing tools in one of the two adjacent rows of tool clamping mechanisms 130 on the same rotating arm 121, thereby avoiding the other row of the two adjacent rows of tool clamping mechanisms 130 from interfering with the tool changing process. It can be understood that the structure of the tool magazine protection door 21 can be selected to be a U-shaped structure similar to the tool magazine frame 110, including two oppositely arranged side panels and a connecting plate connecting the two side panels.

[0057] Optionally, in some embodiments of the present application, the CNC machine tool has a plurality of spindle boxes, each of which is equipped with a spindle, the arrangement direction of the plurality of spindles is parallel to the arrangement direction of the tool clamping mechanism 130 of any row of the tool magazine 10, and the rotating shaft 122 of the rotating tool holder 120 is arranged horizontally. The CNC machine tool also includes a workbench and a gantry structure, the gantry structure includes two columns and a horizontally placed beam, the two columns are fixed on the machine tool base, the two ends of the beam are respectively fixed to the top of the two columns, the spindle box can move in the vertical direction and the horizontal direction relative to the machine tool base, the workbench can move in the horizontal direction relative to the machine tool base, and the workbench and the tool magazine 10 are respectively located on both sides of the gantry structure.

[0058] The above examples are only preferred embodiments of the present application, and certainly cannot be used to limit the scope of rights of the present application. Therefore, equivalent changes made according to the claims of the present application still fall within the scope covered by the present application.

Claims

1. A tool magazine (10), characterized in that: include: A tool magazine frame (110), wherein the tool magazine frame (110) is equipped with a rotation drive mechanism (140); A rotating tool holder (120), wherein the rotating tool holder (120) is provided with a rotating shaft (122), and the rotating drive mechanism (140) is drivingly connected to the rotating shaft (122); and A tool clamping mechanism (130), the tool clamping mechanism (130) comprising a plurality of rows and mounted on the rotating tool holder (120), each row of tool clamping mechanisms (130) being arranged at intervals along the axial direction (a) of the rotating shaft (122), the tool clamping mechanism (130) comprising a tool clamp (131) for clamping a tool; The rotating tool holder (120) comprises m rotating arms (121), the m rotating arms (121) are connected to the rotating shaft (122) and extend along the axial direction (a) of the rotating shaft (122), each rotating arm (121) is provided with n rows of tool clamping mechanisms (130) installed at intervals on its side (s), the normal directions of the end faces of the tool clamps (131) of the n rows of tool clamping mechanisms (130) on the same rotating arm (121) are parallel to each other or away from each other, and the normal directions of the end faces of the tool clamps (131) of the tool clamping mechanisms (130) on different rotating arms (121) are arranged counterclockwise or clockwise, wherein m and n are both natural numbers not less than 2.

2. The tool magazine according to claim 1, characterized in that: The tool clamping mechanism (130) further comprises an extension member (132), and the tool clamps (131) of at least some rows of n rows of the tool clamping mechanisms (130) are mounted on the side surface (s) of each rotating arm (121) via the extension member (132), and the end surfaces of the tool clamps (131) of different rows of the tool clamping mechanisms (130) are at different distances from the side surface (s) of the rotating arm (121).

3. The tool magazine according to claim 1, characterized in that: The rotating arm (121) is provided with a step structure (p) on the side (s) on which the tool clamping mechanism (130) is installed, and the n rows of tool clamping mechanisms (130) are respectively installed on different step surfaces of the step structure (p) of the rotating arm (121).

4. The tool magazine according to claim 1, characterized in that: The m rotating arms (121) intersect with each other at the rotating shaft (122), and projections of the m rotating arms (121) on a plane perpendicular to the axial direction (a) of the rotating shaft (122) extend outwardly from the rotating shaft (122) along a straight line, a broken line or a curve.

5. The tool magazine according to claim 1, characterized in that: The rotating tool holder (120) further comprises a central frame (123), the m rotating arms (121) are all mounted on the central frame (123) and extend outwardly from the central frame (123) along a straight line, a broken line or a curve, and the projection profile of the central frame (123) on a plane perpendicular to the axial direction (a) of the rotating shaft (122) is a polygon or a circle.

6. The tool magazine according to claim 5, characterized in that: On a projection plane perpendicular to the axial direction (a) of the rotating shaft (122), an extension direction (u) of the rotating arm (121) and a normal direction (n*) of the rotating arm (121) at its installation position on the central frame (123) form an angle α, wherein the angle α is greater than 0° and not greater than 90°.

7. The tool magazine according to any one of claims 1 to 6, characterized in that: The tool magazine frame (110) comprises a first side plate (111), a second side plate (112) and a connecting plate (113), wherein the first side plate (111) and the second side plate (112) are arranged opposite to each other and are respectively located on both sides of the middle position of the axial direction of the rotating shaft (122), the connecting plate (113) extends along the axial direction (a) of the rotating shaft (122), and the first side plate (111) and the second side plate (112) are connected via the connecting plate (113); at least one of the first side plate (111) and the second side plate (112) is installed with the rotating drive mechanism (140), the rotating drive mechanism (140) comprises a synchronous belt transmission mechanism and a motor (141) having an output shaft, wherein the synchronous belt transmission mechanism comprises a driving pulley and a driven pulley (142), and the output shaft of the motor, the driving pulley, the driven pulley (142) and the rotating shaft (122) are sequentially connected in transmission.

8. A numerically controlled machine tool comprising a plurality of spindles, characterized in that: It also comprises a tool magazine (10) according to any one of claims 1 to 7, wherein the plurality of spindles are arranged at intervals along a straight line.

9. The numerically controlled machine tool according to claim 8, characterized in that: The numerically controlled machine tool comprises a machine tool base, a tool magazine mounting frame (20) and a tool changing mechanism, wherein the tool changing mechanism can switch between a position corresponding to the spindle and a position corresponding to the tool magazine (10), wherein the tool magazine (10) is mounted on the machine tool base via the tool magazine mounting frame (20), wherein the tool magazine seat frame (110) is driven by a first lifting drive mechanism (22) to be lifted in a vertical direction relative to the tool magazine mounting frame (20), wherein a tool magazine protective door (21) is provided on the tool magazine mounting frame (20), wherein the tool magazine protective door (21) is driven by a second lifting drive mechanism to be lifted in a vertical direction relative to the tool magazine mounting frame (20).

10. The numerically controlled machine tool according to claim 8 or 9, characterized in that: The CNC machine tool has a plurality of spindle boxes, each of which is equipped with a spindle, the arrangement direction of the plurality of spindles is parallel to the arrangement direction of the tool clamping mechanisms (130) of any row of the tool magazine (10), and the rotating shaft (122) of the rotating tool holder (120) is arranged horizontally; The CNC machine tool also includes a workbench and a gantry structure, the gantry structure includes two columns and a horizontally placed beam, the two columns are fixed on the machine tool base, the two ends of the beam are respectively fixed to the tops of the two columns, the spindle box can move in the vertical direction and the horizontal direction relative to the machine tool base, the workbench can move in the horizontal direction relative to the machine tool base, and the workbench and the tool magazine (10) are respectively located on both sides of the gantry structure.

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