A spare-tool type disc tool magazine device
By setting multiple rotatable double tool holder assemblies on the circular tool turret, the positions of the inner and outer tool holders can be exchanged, which solves the problem of small capacity of traditional disc tool magazines, improves tool magazine capacity and space utilization, and provides a flexible control or low-cost solution.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- KUNSHAN BEIJU MASCH CO LTD
- Filing Date
- 2026-04-17
- Publication Date
- 2026-06-02
AI Technical Summary
Traditional disc tool magazines have a limited number of tool positions, which cannot meet the needs of machining complex parts for multiple tools. In addition, chain tool magazines have a complex structure, high cost, and large space requirements, making them unsuitable for all models.
Multiple tool holder rotation assemblies that can rotate independently or synchronously are set on a circular tool turret. Each assembly has a tool holder installed at both the inner and outer ends of the radial direction, and the positions of the inner and outer tool holders are exchanged through independent or synchronous drive modes, thereby increasing the tool magazine capacity.
Theoretically, without increasing the diameter of the cutter head, the tool magazine capacity can be doubled. The structure is compact, the space utilization rate is high, the tool changing logic is clear, the control is flexible or low-cost, and the stability and safety of equipment operation are ensured.
Smart Images
Figure CN122125525A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of machine tool magazine technology, and more particularly to a spare-tool disc magazine device. Background Technology
[0002] Disc tool magazines are widely used in various CNC machining centers due to their simple and compact structure and low cost. Traditional disc tool magazines typically have tool holders arranged in a single, uniform layer around the center of the tool magazine, such as... Figure 1 As shown, in this layout mode, due to the spatial interference of the spindle head and the tool changer, a minimum safe distance L1 must be maintained between two adjacent tool holders, which directly limits the number of tool positions that can be arranged on the tool magazine. Generally, traditional disc tool magazines can only set up to about 15 tool positions at most, with a small tool capacity, which cannot meet the needs of machining complex parts for multiple tools.
[0003] While chain-type tool magazines offer greater tool capacity, their complex structure, high cost, and large space requirements make them unsuitable for all machine models. Therefore, effectively increasing the tool capacity while maintaining the advantages of disc-type tool magazines is a pressing technical challenge in this field. Summary of the Invention
[0004] Based on the technical problems existing in the prior art, the present invention proposes a spare-tool disc tool magazine device.
[0005] This invention proposes a pre-equipped disc tool magazine device, comprising a disc tool magazine body, the disc tool magazine body including a circular tool disc, and multiple tool sleeve rotating assemblies arranged along the circumference of the circular tool disc; each tool sleeve rotating assembly includes a fixing frame, a tool sleeve rotating shaft, a tool sleeve mounting base, and a tool sleeve assembly; the fixing frame is mounted on the back of the circular tool disc; the tool sleeve rotating shaft is rotatably connected to the fixing frame, its front end passing through the circular tool disc and fixedly connected to the tool sleeve mounting base; the tool sleeve assembly includes an outer circular tool sleeve and an inner circular tool sleeve, respectively mounted at both radial ends of the tool sleeve mounting base; the device further includes a power source for driving the tool sleeve rotating shaft to rotate, so that the outer circular tool sleeve and the inner circular tool sleeve exchange positions.
[0006] Preferably, the power source includes a first motor, which is fixedly mounted on the fixed frame, and its output shaft is connected to the rotating shaft of the tool sleeve.
[0007] Preferably, each of the blade sleeve rotating assemblies is driven by an independent first motor.
[0008] Preferably, the power source includes a synchronous drive component for synchronously driving the rotation of multiple tool sleeve rotating components.
[0009] Preferably, the synchronous drive assembly includes a gear ring, a first gear, a second gear, and a second motor; the gear ring is rotatably disposed on the back of the circular cutter head and coaxial with the circular cutter head; multiple first gears are provided, each first gear is correspondingly mounted on the rotating shaft of each cutter sleeve, and all first gears mesh with the outer tooth surface of the gear ring; the second motor is fixedly mounted on the circular cutter head; the second gear is mounted on the output shaft of the second motor and meshes with the inner tooth surface of the gear ring.
[0010] Preferably, the outer and inner circular cutter sleeves are arranged in two layers radially on the circular cutter disc, with the outer circular cutter sleeve located on the outer side away from the center of the circular cutter disc and the inner circular cutter sleeve located on the inner side close to the center of the circular cutter disc.
[0011] Preferably, the plurality of the blade sleeve rotating assemblies are evenly distributed around the circumference of the circular blade disc.
[0012] Preferably, in the structure using the first motor for individual drive, the rotation trajectories of the outer or inner circular tool sleeves on two adjacent tool sleeve rotating assemblies do not overlap.
[0013] Preferably, in the structure using the synchronous drive component, the rotation trajectories of the outer or inner circular tool sleeves on two adjacent tool sleeve rotation assemblies do not overlap.
[0014] Preferably, the tool holder mounting base is a strip-shaped plate structure, with its middle part fixedly connected to the tool holder rotation shaft.
[0015] Compared with the prior art, the present invention provides a spare-tool disc tool magazine device, which has the following beneficial effects: 1. This invention sets up multiple independent or synchronously rotating tool holder assemblies on a circular tool disc. Each assembly has a tool holder installed at both the inner and outer ends of the radial direction, so that a position that could originally only install one tool holder can accommodate two tool holders. Thus, without increasing the diameter of the tool disc, the tool magazine's capacity is theoretically doubled. The structure is compact and the space utilization rate is high.
[0016] 2. This invention sets up an outer circular tool holder and an inner circular tool holder, and uses the rotation of the tool holder rotating assembly to realize the position exchange between the inner and outer tool holders, so that the spare tool located in the inner ring can be rotated to the tool taking position in the outer ring. The tool changing logic is clear and the action is reliable.
[0017] 3. This invention provides two driving modes: one is that each tool holder rotation assembly is driven by an independent motor, which can realize arbitrary switching between inner and outer tool holders at any tool position, with flexible control. Since each component is independent, more can be arranged on the tool disc, maximizing the tool capacity. The other driving mode is to drive all tool holder rotation assemblies to rotate synchronously through a synchronous drive assembly. This mode only requires one motor, has a simpler structure, lower cost, and better synchronization. Although the tool capacity is slightly less than that of the independent drive mode, it is still better than the traditional tool magazine and can meet most machining needs.
[0018] 4. Whether driven independently or synchronously, the structural design of this invention ensures that adjacent tool sleeves do not interfere with each other during rotation, thus ensuring the stability and safety of the equipment operation. Attached Figure Description
[0019] Figure 1 A schematic diagram of the tool holder arrangement structure of an existing disc tool magazine; Figure 2 This is a front view of Embodiment 1 of the present invention; Figure 3 This is a schematic diagram of the back structure of Embodiment 1 of the present invention; Figure 4 This is a schematic diagram of the blade sleeve rotating assembly of the present invention; Figure 5 This is a schematic diagram of the tool holder arrangement structure in Embodiment 1 of the present invention; Figure 6 This is a schematic diagram of the rear structure of Embodiment 2 of the present invention; Figure 7 This is a schematic diagram of the tool holder arrangement structure in Embodiment 2 of the present invention.
[0020] In the diagram: 1. Disc-shaped tool magazine body; 10. Circular tool disc; 11. Tool magazine spindle; 12. Protective housing; 13. Tool holder rotation assembly; 130. Tool holder rotation shaft; 131. Tool holder mounting base; 132. Fixing frame; 133. Tool holder assembly; 1330. Outer circular tool holder; 1331. Inner circular tool holder; 2. First motor; 3. Synchronous drive assembly; 30. Gear ring; 31. First gear; 32. Second gear; 33. Second motor. Detailed Implementation
[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.
[0022] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.
[0023] In existing technologies, traditional disc tool magazines have a maximum of 15 tool positions (e.g., ...). Figure 1 As shown, the safe distance between adjacent tool holders is L1. In view of the technical problem of limited tool positions in the prior art, the present invention proposes a spare tool type disc tool magazine device. Its core design idea is to set up a rotatable tool holder assembly and arrange two tool holders radially inside and outside at the same installation point to achieve high-density storage of two tools at one station.
[0024] Please refer to Figures 2 to 7 This invention provides a pre-equipped disc tool magazine device, comprising a disc tool magazine body 1. The main structure of the disc tool magazine body 1 is similar to that of the prior art, typically including a circular tool disc 10, a tool magazine spindle 11 for driving the circular tool disc 10 to rotate, and a protective housing 12 for protection. The main improvement of this invention lies in the redesign of the tool holder mounting method on the circular tool disc 10.
[0025] like Figure 2 and Figure 4 As shown, multiple tool holder rotating assemblies 13 are now installed on the circular tool holder 10, where a single tool holder was originally mounted directly. These tool holder rotating assemblies 13 are evenly distributed along the circumference of the circular tool holder 10, forming the tool storage unit of the tool magazine.
[0026] Specifically, each tool holder rotation assembly 13 includes a fixing frame 132, a tool holder rotation shaft 130, a tool holder mounting base 131, and a tool holder assembly 133. The fixing frame 132 is a support member that is firmly mounted on the back of the circular tool disc 10, providing a stable foundation for the entire tool holder rotation assembly 13. The tool holder rotation shaft 130 is rotatably connected to the fixing frame 132 via bearings, allowing it to rotate freely relative to the fixing frame 132 and the circular tool disc 10. The front end of the tool holder rotation shaft 130 passes through a pre-set through hole on the circular tool disc 10 and extends to the front of the circular tool disc 10. The tool holder mounting base 131 is fixedly connected to the protruding front end of the tool holder rotation shaft 130. In this embodiment, the tool holder mounting base 131 is preferably an elongated plate-like structure, the middle part of which is fixedly connected to the end of the tool holder rotation shaft 130 by means of a key, pin, or flange, so that the rotation of the tool holder rotation shaft 130 can be accurately transmitted to the tool holder mounting base 131, causing it to rotate together.
[0027] The tool holder assembly 133 includes two tool holders: an outer circular tool holder 1330 and an inner circular tool holder 1331. These two tool holders are fixedly mounted at both radial ends of the tool holder mounting base 131. When the tool holder mounting base 131 is in its initial position, the outer circular tool holder 1330 is located on the outer side away from the center of the circular tool disc 10 (i.e., close to the outer circumference of the tool disc), while the inner circular tool holder 1331 is located on the inner side close to the center of the circular tool disc 10. All the outer circular tool holders 1330 together constitute the outer circular tool magazine assembly, and all the inner circular tool holders 1331 together constitute the inner circular tool magazine assembly, thus forming a two-ring tool holder layout on the circular tool disc 10. This layout provides twice the number of tool mounting points on the same tool disc radius.
[0028] To drive the tool holder rotation shaft 130 to rotate, thereby enabling the position exchange between the outer cylindrical tool holder 1330 and the inner cylindrical tool holder 1331, this device is also equipped with a power source. When a tool located on the inner cylindrical tool magazine needs to be retrieved, the control system issues a command, and the power source drives the tool holder rotation shaft 130 to rotate 180 degrees (or a set angle), causing the tool holder mounting base 131 to rotate synchronously. This rotates the inner cylindrical tool holder 1331, which carries the target tool, from the inner ring position to the outer ring position (i.e., the original position of the outer cylindrical tool holder 1330). At this point, the tool reaches the standard outer cylindrical tool retrieval point, and the tool changing robot can then perform the tool retrieval operation. Conversely, when it is necessary to return the tool to the inner ring, the rotation is reversed again. Through this conversion between the "tool preparation" and "tool changing" positions, the problem of the inner ring tool not being able to be directly retrieved or placed is cleverly solved.
[0029] The present invention provides two preferred power source drive schemes, namely the independent drive mode of Embodiment 1 and the synchronous drive mode of Embodiment 2.
[0030] Example 1, as Figure 3 and Figure 4 As shown, in this embodiment, each tool holder rotation assembly 13 is equipped with an independent power source, which is a first motor 2. The first motor 2 (e.g., a servo motor or a stepper motor) is fixedly mounted on the mounting bracket 132, and its output shaft is directly connected to one end of the tool holder rotation shaft 130 through a coupling or gear transmission. Each first motor 2 is independently controlled by a CNC system.
[0031] This individually driven scheme offers exceptional flexibility. The control system can independently drive any tool holder rotation assembly 13 to rotate at any given time, thereby enabling independent access to any inner or outer ring tool. Regarding the tool holder layout, since each assembly rotates independently, the design only needs to ensure the rotational trajectories of the outer and inner round tool holders 1330 and 1331 during the rotation of a single tool holder rotation assembly 13 (e.g., ...). Figure 5As shown by the dashed circle in the diagram, the tool holder rotation assembly 13 should not interfere with the movement of any component (including the tool holder and the cutting tool) on the adjacent tool holder rotation assembly 13. This design constraint is relatively relaxed, thus allowing for the arrangement of more tool holder rotation assemblies 13 on the circular tool holder 10. Figure 5 As shown, on a circular cutter head 10 of the same size, this embodiment can install up to 10 tool holder rotating assemblies 13, thereby accommodating 10 sets × 2 tools = 20 tools. Compared to the maximum of 15 tool positions mentioned in the background art, this solution can achieve 20 tool positions in this embodiment, and with further optimization, it can even reach 26 tool positions, far exceeding the prior art. Meanwhile, the safety distance between two adjacent tool holder rotating assemblies 13 ( Figure 5 The distance L2 can also be greater than the traditional minimum safety distance L1, ensuring absolute safety during tool changing operations.
[0032] Example 2 like Figure 6 As shown, the main difference between this embodiment and Embodiment 1 lies in the driving method of the power source. To simplify the structure and reduce costs, this embodiment uses a synchronous drive assembly 3 to simultaneously drive all the tool holder rotating assemblies 13 to rotate. The synchronous drive assembly 3 includes a gear ring 30, multiple first gears 31, a second gear 32, and a second motor 33.
[0033] The gear ring 30 is a large ring gear with double-sided teeth on both the inner and outer sides. It is rotatably mounted on the back of the circular cutter head 10 and coaxially mounted with the circular cutter head 10, for example, supported on the circular cutter head 10 or the protective housing 12 by bearings. A plurality of first gears 31, the same number as the number of cutter sleeve rotating assemblies 13, are fixedly mounted one-to-one at the end of each cutter sleeve rotating shaft 130 (or on the shaft segment passing through the fixing frame 132). All first gears 31 mesh with the outer tooth surface of the gear ring 30. A second motor 33 (e.g., a servo motor) is fixedly mounted on the back of the circular cutter head 10 or a nearby fixed structure. A second gear 32 is mounted on the output shaft of the second motor 33 and meshes with the inner tooth surface of the gear ring 30.
[0034] Its working principle is as follows: When it is necessary to exchange the positions of the inner and outer tool sleeves, the second motor 33 starts and drives the second gear 32 to rotate. The second gear 32 drives the gear ring 30 to rotate around its axis through meshing. Since all the first gears 31 mesh with the outer tooth surface of the gear ring 30, the rotation of the gear ring 30 will synchronously drive all the first gears 31 to rotate, thereby driving all the tool sleeve rotating shafts 130 and the tool sleeve mounting seats 131 and tool sleeve groups 133 on them to rotate synchronously. In this way, the positions of all the inner and outer ring tool sleeves on the entire tool disc will be exchanged at the same time.
[0035] In synchronous drive schemes, it is also necessary to ensure that the motion does not interfere. Since all tool holder rotating assemblies 13 rotate synchronously and their relative positions remain unchanged, it is only necessary to ensure, during static design, the tool holders on two adjacent tool holder rotating assemblies 13 are in their initial and rotated positions ( Figure 7 The dotted circles in the diagram should not overlap. For example... Figure 7 As shown, on a circular cutter head 10 of the same size, this embodiment can install up to 8 tool holder rotating assemblies 13, thereby accommodating 8 sets × 2 = 16 tools. Although this is less than the 20-26 tool positions of Embodiment 1, it is still superior to the capacity of the traditional 15 tool positions. With further optimization, it can have more tool positions, and has the advantages of simpler structure, easier control, and lower cost. At the same time, the safety distance between two adjacent tool holder rotating assemblies 13 ( Figure 7 The middle L3 can also meet the requirement of being greater than the minimum safety distance L1.
[0036] In summary, the tool-sparring disc tool magazine device provided by this invention, through its innovative rotatable double tool holder assembly design, effectively solves the problem of small capacity in traditional disc tool magazines without significantly increasing the size of the tool head or the complexity of the structure. Both the high-capacity, flexible control scheme of Embodiment 1 and the simplified synchronous control scheme of Embodiment 2 represent significant advancements compared to existing technologies.
[0037] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.
Claims
1. A tool magazine device with a spare tool type, comprising a disc tool magazine body (1), wherein the disc tool magazine body (1) includes a circular tool disc (10), characterized in that, The circular cutter head (10) is provided with a plurality of cutter sleeve rotating assemblies (13) along the circumferential direction; the cutter sleeve rotating assembly (13) includes a fixed frame (132), a cutter sleeve rotating shaft (130), a cutter sleeve mounting base (131), and a cutter sleeve group (133); the fixed frame (132) is installed on the back of the circular cutter head (10); the cutter sleeve rotating shaft (130) is rotatably connected to the fixed frame (132), and its front end passes through the circular cutter head (10) and is fixedly connected to the cutter sleeve mounting base (131); the cutter sleeve group (133) includes an outer circular cutter sleeve (1330) and an inner circular cutter sleeve (1331), which are respectively installed at the radial ends of the cutter sleeve mounting base (131); the device also includes a power source for driving the cutter sleeve rotating shaft (130) to rotate so that the outer circular cutter sleeve (1330) and the inner circular cutter sleeve (1331) exchange positions.
2. The tool magazine device with spare tool type according to claim 1, characterized in that, The power source includes a first motor (2), which is fixedly mounted on the fixed frame (132), and its output shaft is connected to the rotating shaft (130) of the tool sleeve.
3. The tool magazine device with spare blades according to claim 2, characterized in that, Each of the said blade sleeve rotating assembly (13) is driven by an independent first motor (2).
4. The tool magazine device with spare tool type according to claim 1, characterized in that, The power source includes a synchronous drive component (3) for synchronously driving the rotation of multiple tool sleeve rotating components (13).
5. The tool magazine device of the spare-tool type according to claim 4, characterized in that, The synchronous drive assembly (3) includes a gear ring (30), a first gear (31), a second gear (32), and a second motor (33); the gear ring (30) is rotatably disposed on the back of the circular cutter head (10) and coaxial with the circular cutter head (10); multiple first gears (31) are provided, and each first gear (31) is correspondingly installed on each of the cutter head rotating shafts (130), and all first gears (31) mesh with the outer tooth surface of the gear ring (30); the second motor (33) is fixedly installed on the circular cutter head (10); the second gear (32) is installed on the output shaft of the second motor (33) and meshes with the inner tooth surface of the gear ring (30).
6. The tool magazine device with spare tool type according to claim 1, characterized in that, The outer circular cutter sleeve (1330) and the inner circular cutter sleeve (1331) are arranged in two layers in the radial direction of the circular cutter disc (10). The outer circular cutter sleeve (1330) is located on the outer side away from the center of the circular cutter disc (10), and the inner circular cutter sleeve (1331) is located on the inner side close to the center of the circular cutter disc (10).
7. The tool magazine device of the spare-tool type according to claim 1, characterized in that, Multiple blade sleeve rotating assemblies (13) are evenly distributed around the circumference of the circular blade disc (10).
8. The tool magazine device with spare tool type according to claim 3, characterized in that, The rotation trajectories of the outer circular cutter sleeves (1330) or inner circular cutter sleeves (1331) on two adjacent cutter sleeve rotation assemblies (13) do not overlap.
9. A tool magazine device with a spare tool type according to claim 5, characterized in that, The rotation trajectories of the outer circular cutter sleeves (1330) or inner circular cutter sleeves (1331) on two adjacent cutter sleeve rotation assemblies (13) do not overlap.
10. A tool magazine device with a spare tool type according to any one of claims 1 to 9, characterized in that, The tool holder mounting base (131) is a strip-shaped plate structure, the middle part of which is fixedly connected to the tool holder rotating shaft (130).