An automatic tool changer protection device for CNC machine tools

Abstract

This utility model discloses an automatic tool changer protection device for CNC machine tools, relating to the field of automatic tool changer technology for CNC machine tools. The utility model includes a control console, with a tool holder mounted on top of the console. A locking element is threadedly connected to the top of the tool holder, and a protective mechanism is installed inside the console. Through the cooperation of components such as the motor, protective plate, and return spring of the protective mechanism, when the tool on the tool holder needs to be changed, the motor is started, driving the threaded rod to rotate, which in turn pushes the threaded sleeve, connecting rod, and pressing plate. The pressing plate rotates the protective plate via a support shaft, ensuring safety during tool change. After the change is completed, the pressing plate automatically resets via the return spring, and the protective plate returns to its original position, ensuring the tool holder functions normally. This design achieves the effect of protecting the tool holder during tool change, preventing collisions and damage between the tool and the workpiece, and avoiding injury to the operator.

Description

Technical Field

[0001] This utility model belongs to the field of automatic tool changing technology for CNC machine tools, and in particular relates to an automatic tool changing protection device for CNC machine tools. Background Technology

[0002] Automatic Tool Changer (ATC) is a tool changing system implemented through automated devices, widely used in CNC machining centers and CNC milling machines. Its main function is to automatically change tools during machining according to different process requirements, thereby improving production efficiency, reducing manual intervention, and improving machining accuracy.

[0003] According to a public disclosure of a tool changing device for CNC machine tools (publication number: CN 215903137 U): it includes a tool changing housing, a fixed frame fixedly connected to the lower end of the tool changing housing, a rotary tool motor fixedly connected to the end of the fixed frame away from the tool changing housing, a worm gear fixedly connected to the output end of the rotary tool motor, a flywheel fixedly connected to the end of the worm gear near the rotary tool motor, the worm gear being rotatably connected to the tool changing housing, a worm wheel meshing with the outer surface of the worm gear, the worm wheel rotating in the inner groove of the tool changing housing, a central shaft fixedly connected to the upper end of the worm wheel, a lower guide plate fixedly connected to the inner groove of the tool changing housing, and a drive disc fixedly connected to the surface of the central shaft.

[0004] In the aforementioned application, the cooperation between the tool changer and the fixed frame assembly makes it difficult to protect the tool holder during tool replacement in response to different processing needs. This can lead to collisions and damage between the tool and the workpiece during tool replacement, potentially causing injury to the operator. Therefore, we propose an automatic tool changer protection device for CNC machine tools. Utility Model Content

[0005] The purpose of this utility model is to provide an automatic tool changer protection device for CNC machine tools. Through the design of components such as the motor, protective plate and return spring of the protection mechanism, the problem of insufficient safety during tool changing in the prior art is solved.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model is an automatic tool changer and protection device for CNC machine tools, including a control console, a tool holder on the top of the control console, a locking element threadedly connected to the top of the tool holder, and a protective mechanism inside the control console.

[0008] The protective mechanism includes a motor, which is fixedly connected inside the control console. The output shaft of the motor is fixedly connected to a threaded rod, and a threaded sleeve is threadedly connected to the circumferential surface of the threaded rod. A connecting rod is fixedly connected to the side of the threaded sleeve, and a pressing plate is fixedly connected to the end of the connecting rod away from the side of the threaded sleeve. A support shaft is rotatably connected through the top of the control console, and a pressure plate is fixedly connected to the circumferential surface of the support shaft. A protective plate is also fixedly connected to the circumferential surface of the support shaft. The purpose of this mechanism is to prevent the cutting tool and the workpiece from colliding and being damaged during tool changing, and to prevent injury to the operator.

[0009] Furthermore, a reset spring is fixedly connected to the bottom of the pressure plate, and the end of the reset spring away from the bottom of the pressure plate is fixedly connected to the inside of the control console. The purpose of this is to ensure that the pressure plate can automatically reset and reduce manual intervention.

[0010] Furthermore, a limit plate is fixedly connected to the end of the threaded rod away from the motor output shaft, and the initial state of the return spring is relaxed, the purpose of which is to limit the displacement distance of the threaded sleeve.

[0011] Furthermore, the number of the support shaft, protective plate and return spring is three, and they are distributed on the top of the console. The top of the pressure plate is located on the displacement trajectory of the pressing plate. The purpose is to ensure that the movement of the pressing plate can press the pressure plate.

[0012] Furthermore, the side of the tool holder is provided with an anti-drop mechanism, which includes a mounting groove. The mounting groove is opened on the side of the tool holder, and a sliding groove is opened inside the mounting groove. A control shaft is slidably connected inside the sliding groove. A force plate is rotatably connected to the circumferential surface of the control shaft, and a clamping plate is rotatably connected to the circumferential surface of the control shaft. The purpose is to ensure that other tools on the tool holder will not deviate or fall off.

[0013] Furthermore, a tension spring is fixedly connected inside the mounting groove, and the end of the tension spring away from the inside of the mounting groove is fixedly connected to the top of the clamping plate. The purpose of this is to ensure that the clamping plate can automatically reset and reduce manual intervention.

[0014] Furthermore, one end of the force-bearing plate is located on the displacement trajectory of the protective plate, and the number of mounting slots, control shafts and tension springs is set to several, and they are symmetrical to each other along the vertical central axis of the tool holder. The purpose is to ensure that the rotation of the protective plate can squeeze the force-bearing plate.

[0015] This utility model has the following beneficial effects:

[0016] This utility model utilizes the coordinated operation of components such as the motor, protective plate, and return spring in the protective mechanism. When it is necessary to replace the tool on the tool holder, the motor is started, driving the threaded rod to rotate, which in turn pushes the threaded sleeve, connecting rod, and pressing plate. The pressing plate rotates the protective plate via the support shaft, ensuring safety during tool replacement. After replacement, the pressing plate automatically resets via the return spring, and the protective plate returns to its original position, ensuring the normal operation of the tool holder. This design achieves the effect of protecting the tool holder during replacement, preventing collisions and damage between the tool and the workpiece during tool change, and avoiding injury to the operator.

[0017] This invention utilizes the coordinated operation of components such as the control shaft, clamping plate, and tension spring of the anti-drop mechanism. The rotating protective plate presses against the force-bearing plate, pushing the control shaft to move through the slide groove, which in turn causes the clamping plate to hold the unreplaced tool, preventing it from loosening and falling. When the protective plate resets, the clamping plate automatically resets via the tension spring. This design achieves a stable clamping effect on the unreplaced tool, preventing accidental drop.

[0018] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a structural schematic diagram of the overall three-dimensional front view of the tool holder of this utility model;

[0021] Figure 2 This is a schematic diagram of the overall three-dimensional cross-sectional view of the tool holder of this utility model;

[0022] Figure 3 This is a structural schematic diagram of the overall three-dimensional bottom view of the tool holder of this utility model;

[0023] Figure 4 This utility model Figure 3 A three-dimensional magnified structural diagram of A in the diagram;

[0024] Figure 5 This utility model Figure 2 A three-dimensional magnified structural diagram of B.

[0025] The attached diagram lists the components represented by each number as follows:

[0026] 1. Control console; 2. Tool holder; 3. Locking element; 4. Protective mechanism; 41. Motor; 42. Threaded rod; 43. Threaded sleeve; 44. Connecting rod; 45. Pressing plate; 46. Support shaft; 47. Pressure plate; 48. Protective plate; 49. Return spring; 410. Limiting plate; 5. Anti-fall mechanism; 51. Mounting groove; 52. Slide groove; 53. Control shaft; 54. Force plate; 55. Clamping plate; 56. Tension spring. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figures 1-5 This utility model is an automatic tool changer protection device for CNC machine tools, including a control console 1, a tool holder 2 is provided on the top of the control console 1, a locking member 3 is threadedly connected to the top of the tool holder 2, and a protective mechanism 4 is provided inside the control console 1.

[0029] The protective mechanism 4 includes a motor 41, which is fixedly connected inside the control console 1. A threaded rod 42 is fixedly connected to the output shaft of the motor 41. A threaded sleeve 43 is threadedly connected to the circumferential surface of the threaded rod 42. A connecting rod 44 is fixedly connected to the side of the threaded sleeve 43. A pressing plate 45 is fixedly connected to the end of the connecting rod 44 away from the side of the threaded sleeve 43. A support shaft 46 is rotatably connected through the top of the control console 1. A pressure plate 47 is fixedly connected to the circumferential surface of the support shaft 46, and a protective plate 48 is fixedly connected to the circumferential surface of the support shaft 46. The purpose of this mechanism is to prevent collisions and damage between the cutting tool and the workpiece during tool changes, and to prevent injury to the operator.

[0030] As shown in the figure, a reset spring 49 is fixedly connected to the bottom of the pressure plate 47. The end of the reset spring 49 away from the bottom of the pressure plate 47 is fixedly connected to the inside of the control console 1. The purpose is to ensure that the pressure plate 47 can automatically reset and reduce manual intervention.

[0031] As shown in the figure, the end of the threaded rod 42 away from the output shaft of the motor 41 is fixedly connected to the limit plate 410, and the initial state of the return spring 49 is relaxed, which is to limit the displacement distance of the threaded sleeve 43.

[0032] As shown in the figure, there are three support shafts 46, protective plates 48 and return springs 49, which are distributed on the top of the control console 1. The top of the pressure plate 47 is located on the displacement trajectory of the pressing plate 45. The purpose is to ensure that the movement of the pressing plate 45 can press the pressure plate 47.

[0033] As shown in the figure, the tool holder 2 is provided with an anti-drop mechanism 5 on its side. The anti-drop mechanism 5 includes a mounting groove 51, which is opened on the side of the tool holder 2. A sliding groove 52 is opened inside the mounting groove 51. A control shaft 53 is slidably connected inside the sliding groove 52. A force plate 54 is rotatably connected to the circumferential surface of the control shaft 53. A clamping plate 55 is rotatably connected to the circumferential surface of the control shaft 53. The purpose is to ensure that other tools of the tool holder 2 will not deviate or fall off.

[0034] As shown in the figure, a tension spring 56 is fixedly connected inside the mounting groove 51. One end of the tension spring 56 away from the inside of the mounting groove 51 is fixedly connected to the top of the clamping plate 55. The purpose is to ensure that the clamping plate 55 can automatically reset and reduce manual intervention.

[0035] As shown in the figure, one end of the force plate 54 is located on the displacement trajectory of the protective plate 48. The number of mounting slots 51, control shafts 53 and tension springs 56 are set in a certain number and are symmetrical to each other along the vertical central axis of the tool holder 2. The purpose is to ensure that the rotation of the protective plate 48 can squeeze the force plate 54.

[0036] A specific application of this embodiment is as follows: When facing different processing conditions, it is necessary to change the tool on the tool holder 2. At this time, the operator can start the motor 41. The output shaft of the motor 41 rotates, which drives the threaded rod 42 to rotate. The rotation of the threaded rod 42 drives the threaded sleeve 43 to move. The movement of the threaded sleeve 43 drives the pressing plate 45 to move through the connecting rod 44. The pressing plate 45 is subjected to force and rotates through the support shaft 46. The rotation of the support shaft 46 drives the protective plate 48 to rotate, thereby protecting the tool holder 2 when changing tools and ensuring the safe and smooth tool changing operation. When the tool changing is completed, the pressure plate 47 is no longer subjected to force and automatically resets through the elasticity of the return spring 49, thereby driving the protective plate 48 to reset, without affecting the normal operation of the tool holder 2.

[0037] During the rotation of the protective plate 48 to protect the tool holder 2, it presses against the force plate 54. The force plate 54 pushes the control shaft 53. The control shaft 53 moves through the slide groove 52 inside the mounting groove 51. The movement of the control shaft 53 drives the clamping plate 55 to move. The clamping plate 55 clamps the unreplaced tool to prevent it from loosening and falling. When the protective plate 48 is reset, the clamping plate 55 is reset by the elasticity of the tension spring 56.

[0038] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0039] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. An automatic tool changer protection device for CNC machine tools, characterized in that, Includes a control console (1), a tool holder (2) is provided on the top of the control console (1), a locking member (3) is threadedly connected to the top of the tool holder (2), and a protective mechanism (4) is provided inside the control console (1). The protective mechanism (4) includes a motor (41), which is fixedly connected inside the control console (1). The output shaft of the motor (41) is fixedly connected to a threaded rod (42). A threaded sleeve (43) is threadedly connected to the circumferential surface of the threaded rod (42). A connecting rod (44) is fixedly connected to the side of the threaded sleeve (43). A pressing plate (45) is fixedly connected to one end of the connecting rod (44) away from the side of the threaded sleeve (43). A support shaft (46) is rotatably connected through the top of the control console (1). A pressure plate (47) is fixedly connected to the circumferential surface of the support shaft (46). A protective plate (48) is fixedly connected to the circumferential surface of the support shaft (46).

2. The automatic tool changer protection device for CNC machine tools according to claim 1, characterized in that, A reset spring (49) is fixedly connected to the bottom of the pressure plate (47), and the end of the reset spring (49) away from the bottom of the pressure plate (47) is fixedly connected to the inside of the control console (1).

3. The automatic tool changer protection device for CNC machine tools according to claim 2, characterized in that, The threaded rod (42) is fixedly connected to a limit plate (410) at one end away from the output shaft of the motor (41), and the initial state of the reset spring (49) is relaxed.

4. The automatic tool changer protection device for CNC machine tools according to claim 3, characterized in that, The number of the support shaft (46), the protective plate (48) and the return spring (49) is three, and they are distributed on the top of the console (1). The top of the pressure plate (47) is located on the displacement trajectory of the pressing plate (45).

5. The automatic tool changer protection device for CNC machine tools according to claim 4, characterized in that, The tool holder (2) is provided with an anti-drop mechanism (5) on its side. The anti-drop mechanism (5) includes a mounting groove (51). The mounting groove (51) is opened on the side of the tool holder (2). A sliding groove (52) is opened inside the mounting groove (51). A control shaft (53) is slidably connected inside the sliding groove (52). A force plate (54) is rotatably connected to the circumferential surface of the control shaft (53). A clamping plate (55) is rotatably connected to the circumferential surface of the control shaft (53).

6. The automatic tool changer protection device for CNC machine tools according to claim 5, characterized in that, A tension spring (56) is fixedly connected inside the mounting groove (51), and one end of the tension spring (56) away from the inside of the mounting groove (51) is fixedly connected to the top of the clamping plate (55).

7. The automatic tool changer protection device for CNC machine tools according to claim 6, characterized in that, One end of the force plate (54) is located on the displacement trajectory of the protective plate (48). The number of the mounting groove (51), control shaft (53) and tension spring (56) is set in several, and they are symmetrical to each other along the vertical central axis of the tool holder (2).

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