Tool changing mechanism of numerical control machine tool

Abstract

The utility model relates to the technical field of numerical control machine tools, in particular to a tool changing mechanism of a numerical control machine tool, which comprises a working table, a processing machine head for processing a workpiece is arranged at the top of the working table, a processing tool bit is arranged at the bottom of the processing machine head, and a tool changing seat for changing a tool is arranged at the top of the working table. A controller used for controlling is installed on one side of the tool changing base, clamping rods used for clamping are symmetrically arranged at the bottom of the tool changing base, a tool magazine used for containing different types of machining tool bits is arranged on one side of the workbench, supporting rods used for supporting are installed in the tool magazine at equal intervals, and a rotating assembly used for driving a rotating handle is installed at the bottom of the tool changing base. According to the tool changing mechanism of the numerical control machine tool, through the arrangement of the tool magazine and the tool changing base, the automatic tool changing function is achieved, and the tool changing mechanism has the advantages that the production efficiency is improved, and automation is improved.

Description

Technical Field

[0001] This utility model relates to the field of CNC machine tool technology, and in particular to a tool changing mechanism for a CNC machine tool. Background Technology

[0002] A CNC machine tool is a machining tool controlled by a CNC system. It can process different types of parts and can flexibly adjust machining parameters and processes to adapt to different production needs. It is widely used in many industries. CNC machine tools usually have an automatic tool changer to improve the level of automation.

[0003] However, due to the limited working space in small CNC machine tools, coupled with the complex maintenance process of the existing CNC machine tool tool changing mechanism, they can only use manual tool changing. Manual tool changing is not only slow and reduces production efficiency, but if the operation is improper or the machine tool malfunctions, it may cause injury to the operator or damage to the machine tool.

[0004] Therefore, it is necessary to provide a new tool changing mechanism for CNC machine tools to solve the above-mentioned technical problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a tool changing mechanism for CNC machine tools.

[0006] The tool changing mechanism of the CNC machine tool provided by this utility model includes: a worktable, a machining head for machining workpieces is installed on the top of the worktable, a machining tool head is installed at the bottom of the machining head, a tool changing seat for tool changing is installed on the top of the worktable, a controller for control is installed on one side of the tool changing seat, clamping rods for clamping are symmetrically arranged at the bottom of the tool changing seat, a tool magazine for placing different types of machining tool heads is provided on one side of the worktable, support rods for support are installed at equal intervals inside the tool magazine, a rotating assembly for driving the rotating handle is installed at the bottom of the tool changing seat, and a driving assembly for driving the machining tool head to translate is installed inside the tool magazine.

[0007] Preferably, the rotating assembly includes: a first motor, a rotating shaft, a rotating rod, an outer rod, a double-layer guide plate, an upper cutter post, a lower cutter post, an upper cutter bar, and a lower cutter bar. The first motor is fixedly connected inside the tool changer. The output end of the first motor is fixedly connected to the rotating shaft. One end of the rotating shaft is fixedly connected to the rotating rod. Both ends of the rotating rod are fixedly connected to corresponding clamping rods. The double-layer guide plate is rotatably connected inside the rotating rod. An outer rod is fixedly connected between the double-layer guide plate and the tool changer. The outer rod is rotatably connected to the rotating rod. Both the upper and lower layers of the double-layer guide plate have fan-shaped guide rails. The upper cutter bar is slidably connected inside the rotating rod. One end of the upper cutter bar is fixedly connected to the upper cutter post. The upper cutter post slides in the fan-shaped guide rail of the upper layer of the double-layer guide plate. The lower cutter bar is slidably connected inside the rotating rod. One end of the lower cutter bar is fixedly connected to the lower cutter post. The lower cutter post slides in the fan-shaped guide rail of the lower layer of the double-layer guide plate.

[0008] Preferably, the second motor, gear, and slide plate are connected as follows: the second motor is fixedly connected inside the tool magazine; the output end of the second motor is fixedly connected to the gear; the slide plate is slidably connected inside the tool magazine; a rack is provided on one side of the slide plate; the gear and rack mesh; and a support rod is rotatably connected to one side of the slide plate.

[0009] Preferably, the outer rod is hollow inside, and the rotating shaft passes through the outer rod and the double-layer guide plate and is fixedly connected to the bottom of the rotating rod.

[0010] Preferably, a torsion spring is fitted at one end of the support rod.

[0011] Preferably, a number is provided on the top of the skateboard.

[0012] Preferably, both the support rod and the clamping rod are designed with an arc shape.

[0013] Preferably, the spacing between the multiple machining heads on the tool magazine is greater than the rotation radius of the rotating rod.

[0014] Preferably, the controller is electrically connected to the first motor and the second motor respectively.

[0015] Compared with related technologies, the tool changing mechanism of the CNC machine tool provided by this utility model has the following beneficial effects:

[0016] Reduce human intervention:

[0017] Automatic tool changing is achieved through the tool changer and tool magazine, which reduces manual operation, lowers the safety risks caused by improper operation or negligence, reduces errors caused by human operation, and improves machining accuracy and product quality.

[0018] Improve production efficiency:

[0019] This tool changing mechanism can complete the tool change in a short time, greatly reducing non-machining time and allowing for continuous machining operations, thereby improving production efficiency.

[0020] Increase automation:

[0021] This tool changing mechanism is designed for small CNC machine tools. Through the automated tool changing process, it significantly improves the automation level of the machine tool and solves the problem that small machine tools cannot adopt complex automatic tool changing mechanisms due to space limitations. Attached Figure Description

[0022] Figure 1 A schematic diagram of the tool changing mechanism of the CNC machine tool provided by this utility model;

[0023] Figure 2 for Figure 1 The diagram shows the structure of the tool changer.

[0024] Figure 3 for Figure 2 The diagram shown is a structural schematic of the rotating shaft.

[0025] Figure 4 for Figure 1 The diagram shows the structure of the machining head;

[0026] Figure 5 for Figure 4 The diagram shows the structure of the skateboard.

[0027] Labels in the diagram: 1. Worktable; 2. Machining head; 3. Machining cutter head; 4. Tool changer; 5. Controller; 6. Clamping rod; 7. Tool magazine; 8. Support rod; 20. Sector guide rail; 21. First motor; 22. Rotary shaft; 23. Rotary rod; 24. Outer rod; 25. Double-layer guide plate; 26. Upper tool post; 27. Lower tool post; 28. Upper tool holder; 29. ​​Lower tool holder; 31. Second motor; 32. Gear; 33. Slide plate; 51. Torsion spring; 61. Label. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0029] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0030] Please see Figures 1 to 5 A tool changing mechanism for a CNC machine tool includes: a worktable 1, a machining head 2 for machining workpieces mounted on the top of the worktable 1, a machining head 3 mounted on the bottom of the machining head 2, a tool changing seat 4 for tool changing mounted on the top of the worktable 1, a controller 5 for control mounted on one side of the tool changing seat 4, clamping rods 6 symmetrically arranged at the bottom of the tool changing seat 4, a tool magazine 7 for placing different types of machining heads 3 on one side of the worktable 1, support rods 8 for support mounted equidistantly inside the tool magazine 7, a rotating assembly for driving the rotating handle mounted at the bottom of the tool changing seat 4, a driving assembly for driving the machining heads 3 to translate inside the tool magazine 7, the spacing between multiple machining heads 3 on the tool magazine 7 being greater than the rotation radius of the rotating rod 23, and the controller 5 being electrically connected to a first motor 21 and a second motor 31 respectively.

[0031] It should be noted that the spacing between the multiple machining heads 3 on the tool magazine 7 is greater than the rotation radius of the rotating rod 23. When the rotating rod 23 rotates, it will not touch other machining heads 3. The controller 5 is electrically connected to the first motor 21 and the second motor 31 respectively. There is no need to add a new controller 5, which saves operation steps and space.

[0032] Please see Figure 2 and Figure 3 The rotating assembly includes: a first motor 21, a rotating shaft 22, a rotating rod 23, an outer rod 24, a double-layer guide plate 25, an upper tool post 26, a lower tool post 27, an upper tool bar 28, and a lower tool bar 29. The first motor 21 is fixedly connected inside the tool changer 4. The output end of the first motor 21 is fixedly connected to the rotating shaft 22. One end of the rotating shaft 22 is fixedly connected to the rotating rod 23. Both ends of the rotating rod 23 are fixedly connected to corresponding clamping rods 6. The double-layer guide plate 25 is rotatably connected inside the rotating rod 23. An outer rod 24 is fixedly connected between the double-layer guide plate 25 and the tool changer 4. The outer rod 24 is rotatably connected to the rotating rod 23. Both the upper and lower layers of the double-layer guide plate 25 are provided with fan-shaped guide rails 20. The upper tool bar 28 is slidably connected inside the rotating rod 23. One end of the upper tool bar 28 is fixedly connected to the upper tool column 26. The upper tool column 26 slides in the fan-shaped guide rail 20 of the upper layer of the double-layer guide plate 25. The lower tool bar 29 is slidably connected inside the rotating rod 23. One end of the lower tool bar 29 is fixedly connected to the lower tool column 27. The lower tool column 27 slides in the fan-shaped guide rail 20 of the lower layer of the double-layer guide plate 25. The outer rod 24 is hollow inside. The rotating shaft 22 passes through the outer rod 24 and the double-layer guide plate 25 and is fixedly connected to the bottom of the rotating rod 23. The support rod 8 and the clamping rod 6 are both arc-shaped designs.

[0033] It should be noted that: the two ends of the outer rod 24 are fixedly connected to the tool changer 4 and the double-layer guide plate 25 respectively; the rotating shaft 22 passes through the outer rod 24 and the double-layer guide plate 25 to reach the bottom of the rotating rod 23 and is fixedly connected to the rotating rod 23; the support rod 8 and the clamping rod 6 are both arc-shaped designs to better support and clamp the machining head 3;

[0034] Please see Figure 4 and Figure 5 The drive assembly includes: a second motor 31, a gear 32 and a slide plate 33. The second motor 31 is fixedly connected inside the tool magazine 7. The output end of the second motor 31 is fixedly connected to the gear 32. The slide plate 33 is slidably connected inside the tool magazine 7. A rack is provided on one side of the slide plate 33. The gear 32 and the rack mesh. A support rod 8 is rotatably connected to one side of the slide plate 33. A torsion spring 51 is sleeved on one end of the support rod 8. A label 61 is provided on the top of the slide plate 33.

[0035] It should be noted that: the support rod 8 provides support for the machining head 3 to prevent the machining head 3 from falling. One end of the torsion spring 51 is inserted into the slide plate 33, and the other end is inserted into the support rod 8. The rotation of the support rod 8 applies pressure to the torsion spring 51 to deform it. Under the rebound force of the torsion spring 51, the support rod 8 is reset. The label 61 can clearly identify the machining head 3 on the tool magazine 7.

[0036] The working principle of the tool changing mechanism of the CNC machine tool provided by this utility model is as follows:

[0037] Automatic tool changer:

[0038] After receiving the tool change command, the controller 5 on the tool changer 4 stops the machining head 2 from operation, bringing it to the tool change position. The machining head 3 at the bottom of the machining head 2 is aligned vertically with the rotating shaft 22 at the bottom of the tool changer 4. The second motor 31 is started, causing the gear 32, fixedly connected to its output end, to rotate. The corresponding machining head 3 (number 61) is selected according to the command. Through the meshing of the gear 32 and the rack on the slide plate 33, the gear 32 drives the slide plate 33 to rotate the machining head 3 to the same vertical position as the rotating shaft 22 at the bottom of the tool changer 4. At this point, the machining head 3 is at the same horizontal level as the machining head 3 at the bottom of the machining head 2. The first motor 21 is then started, and the output end of the first motor 21 is fixed... The rotating shaft 22 rotates, passing through the outer rod 24 and the double-layer guide plate 25, and is fixedly connected to the rotating rod 23. The rotating shaft 22 drives the rotating rod 23 to rotate 90 degrees counterclockwise. The rotating rod 23 drives the clamping rods 6 fixedly connected on both sides to rotate. The clamping rod 6 near the upper tool bar 28 clamps the new machining head 3, and the clamping rod 6 near the lower tool bar 29 clamps the old machining head 3. Since one end of the outer rod 24 is fixedly connected to the tool changer 4, and the other end of the outer rod 24 is fixedly connected to the double-layer guide plate 25, the outer rod 24 is rotatably connected to the rotating rod 23, and the double-layer guide plate 25 is rotatably connected to the rotating rod 23, the double-layer guide plate 25 remains stationary when the rotating rod 23 rotates. The upper tool bar 28 and the lower tool bar 29 are slidably connected inside the rotating rod 23. The rotation of the rotating rod 23 drives the new machining head 3. The upper tool bar 28 and lower tool bar 29 rotate. Both the upper and lower layers of the double-layer guide plate 25 are provided with sector-shaped guide rails 20. The two sector-shaped guide rails 20 are the same size but face opposite directions. When the upper tool bar 28 and lower tool bar 29 rotate, the upper tool post 26 fixedly connected to the upper tool bar 28 slides within the sector-shaped guide rail 20 on the upper layer of the double-layer guide plate 25, and the lower tool post 27 fixedly connected to the lower tool bar 29 slides within the sector-shaped guide rail 20 on the lower layer of the double-layer guide plate 25. This causes the upper tool bar 28 and lower tool bar 29 to be pushed out from inside the rotating shaft 23. The upper tool bar 28 presses against the new machining head 3 for limiting, and the lower tool bar 29 presses against the old machining head 3 for limiting, controlling the machining head 2 to rise. The old machining head 3 disengages from inside the machining head 2, and the rotating shaft 22 continues to rotate counterclockwise. Rotating 180 degrees, the upper tool holder 28 and the lower tool holder 29 remain stationary. The new machining head 3 is clamped by the clamping rod 6 near the upper tool holder 28, pressing against the support rod 8. The support rod 8 rotates, and at the same time, the support rod 8 pulls the torsion spring 51. After the new machining head 3 disengages from the support rod 8, the support rod 8 returns to its original position under the rebound force of the torsion spring 51. The new machining head 3 and the old machining head 3 exchange positions. The machining head 2 descends, and the new machining head 3 is installed. The old machining head 3 replaces the new machining head 3 and is placed on the corresponding support rod 8. At this time, the rotating shaft 22 drives the rotating rod 23 to rotate 90 degrees clockwise. The upper tool holder 28 and the lower tool holder 29 retract, the rotating rod 23 returns to its original position, and the machining head 2 restarts and continues to work.

[0039] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A tool changer for a numerically controlled machine tool, characterized in that, include: Workbench (1), a machining head (2) for machining workpieces is installed on the top of the workbench (1), and a machining cutter head (3) is installed on the bottom of the machining head (2). Tool changer (4), tool changer (4) is installed on the top of the worktable (1) for tool changing, controller (5) is installed on one side of the tool changer (4) for control, and clamping rods (6) for clamping are symmetrically provided at the bottom of the tool changer (4). Tool magazine (7), one side of the worktable (1) is equipped with a tool magazine (7) for placing different types of machining tool heads (3), and support rods (8) for support are installed at equal intervals inside the tool magazine (7). The bottom of the rotating assembly, the tool changer (4), is equipped with a rotating assembly for driving the rotating handle; The drive assembly, the tool magazine (7) is equipped with a drive assembly for driving the translation of the machining head (3).

2. The tool changer of the numerically controlled machine tool according to claim 1, characterized in that, The rotating assembly includes: a first motor (21), a rotating shaft (22), a rotating rod (23), an outer rod (24), a double-layer guide plate (25), an upper tool post (26), a lower tool post (27), an upper tool bar (28), and a lower tool bar (29). The first motor (21) is fixedly connected inside the tool changer (4). The output end of the first motor (21) is fixedly connected to the rotating shaft (22). One end of the rotating shaft (22) is fixedly connected to the rotating rod (23). Both ends of the rotating rod (23) are fixedly connected to the corresponding clamping rods (6). The double-layer guide plate (25) is rotatably connected inside the rotating rod (23). The double-layer guide plate (25) and the tool changer (4) are connected to each other. An outer rod (24) is fixedly connected to the upper layer of the double-layer guide plate (25), and the outer rod (24) is rotatably connected to the rotating rod (23). The upper and lower layers of the double-layer guide plate (25) are provided with fan-shaped guide rails (20). The rotating rod (23) is slidably connected to an upper tool bar (28). One end of the upper tool bar (28) is fixedly connected to an upper tool column (26). The upper tool column (26) slides in the fan-shaped guide rail (20) on the upper layer of the double-layer guide plate (25). The rotating rod (23) is slidably connected to a lower tool bar (29). One end of the lower tool bar (29) is fixedly connected to a lower tool column (27). The lower tool column (27) slides in the fan-shaped guide rail (20) on the lower layer of the double-layer guide plate (25).

3. The tool changer of the numerically controlled machine tool according to claim 1, characterized in that, The drive components include: a second motor (31), a gear (32) and a slide plate (33). The second motor (31) is fixedly connected inside the tool magazine (7). The output end of the second motor (31) is fixedly connected to the gear (32). The slide plate (33) is slidably connected inside the tool magazine (7). A rack is provided on one side of the slide plate (33). The gear (32) and the rack mesh. A support rod (8) is rotatably connected to one side of the slide plate (33).

4. The tool changer of the numerically controlled machine tool according to claim 2, characterized in that, The outer rod (24) is hollow inside, and the rotating shaft (22) passes through the outer rod (24) and the double-layer guide plate (25) and is fixedly connected to the bottom of the rotating rod (23).

5. The tool changer of the numerically controlled machine tool according to claim 3, characterized in that, A torsion spring (51) is fitted at one end of the support rod (8).

6. The tool changer of the numerically controlled machine tool according to claim 3, characterized in that, The top of the skateboard (33) is marked with a number (61).

7. The tool changer of the numerically controlled machine tool according to claim 1, characterized in that, Both the support rod (8) and the clamping rod (6) are arc-shaped.

8. The tool changer of the numerically controlled machine tool according to claim 2, characterized in that, The spacing between the multiple machining heads (3) on the tool magazine (7) is greater than the rotation radius of the rotating rod (23).

Images