Automatic tool changing device of numerical control machining center

Abstract

The utility model discloses a numerical control machining center automatic tool changer which comprises a dustproof shell, a mounting groove is formed in the top of the dustproof shell, a moving groove is formed in the middle of the dustproof shell, a connecting frame is fixedly connected to the top end of the dustproof shell, and a driving motor is fixedly connected to the top end of the connecting frame. And an output shaft of the driving motor is fixedly sleeved with a driving gear. The dustproof shell is arranged on the sliding seat, dust prevention can be conducted on the cutter through the dustproof shell, when the cutter needs to be replaced, the driving motor is started, the output shaft of the driving motor drives the driving gear to rotate, the transmission gear rotates along with the driving gear, the opening and closing plate is driven to rotate through the rotating shaft, and the opening and closing plate moves in the moving groove; after the opening and closing plate rotates by a certain angle, the sealing plate on the opening and closing plate is separated from the bottom of the mounting groove, the cutter can be conveniently mounted, the opening and closing plate seals the mounting groove again when the cutter is idle, and therefore dust or foreign matter is prevented from being attached to the cutter.

Description

Technical Field

[0001] This utility model relates to the field of CNC machining center technology, specifically to an automatic tool changer for CNC machining centers. Background Technology

[0002] A CNC machining center is a highly mechatronic CNC machine tool with an automatic tool changer. It can perform multiple machining operations in a single setup, such as milling, drilling, and tapping, and is suitable for efficient and high-precision machining of complex parts.

[0003] According to CN220312619U, an automatic tool changer for a precision CNC machining center is described. The tool is fixedly placed on a tool holder inside a sliding seat. A drive motor rotates, causing a drive gear to rotate. The drive gear then rotates the driven gear and the rotating sleeve, thereby rotating the tool holder. When the tool holder to be changed moves to alignment with the moving assembly, an electric push rod is activated, driving a push plate to move. This push plate pushes the tool holder to slide within the sliding groove. The tool holder slides from the sliding groove into the moving seat. At this time, a displacement motor is activated, driving a threaded rod to rotate. The threaded rod drives the moving seat to move along the displacement groove, causing the moving seat to move the tool holder below the tool shaft, completing the tool change process.

[0004] The aforementioned movable seat and other structures enable the tool changing process. However, when the tool is placed on the tool holder, its surface is exposed to the air, and dust or foreign objects can easily adhere to its surface, thus affecting the installation of the tool. Utility Model Content

[0005] The purpose of this invention is to provide an automatic tool changer for CNC machining centers to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an automatic tool changer for a CNC machining center, comprising a dustproof housing, an installation groove on the top of the dustproof housing, a moving groove in the middle of the dustproof housing, a connecting frame fixedly connected to the top of the dustproof housing, a drive motor fixedly connected to the top of the connecting frame, a drive gear fixedly sleeved on the output shaft of the drive motor, a transmission gear meshing on the surface of the drive gear, a rotating shaft fixedly connected to the inner wall of the transmission gear, and an opening and closing plate fixedly sleeved on the surface of the rotating shaft.

[0007] As a further preferred embodiment of this technical solution, the moving groove adopts an arc-shaped structure, the connecting frame adopts an L-shaped structure, the driving gear and the transmission gear are located between the dustproof shell and the connecting frame, the opening and closing plate is located inside the dustproof shell, and the opening and closing plate is composed of a sealing plate and a protrusion. The shape and size of the sealing plate and the mounting groove correspond to each other.

[0008] As a further preferred embodiment of this technical solution, a sliding seat is fixedly connected to the top of the dustproof shell, a slide rail is slidably connected to the side of the sliding seat near the connecting frame, a mounting plate is fixedly connected to the side of the slide rail away from the sliding seat, a cylinder is fixedly connected to the front of the mounting plate, and the cylinder and the sliding seat are fixedly connected.

[0009] As a further preferred embodiment of this technical solution, a connecting seat is fixedly connected to the bottom end of the sliding seat, a rotary motor is fixedly connected to the top end of the connecting seat, a rotating plate is fixedly connected to the output shaft of the rotary motor, an eccentric column is fixedly connected to the bottom end of the rotating plate, a rotating rod is rotatably connected inside the connecting seat, an adjusting plate is fixedly connected to the bottom end of the rotating rod, and a groove is provided in the middle of the adjusting plate.

[0010] As a further preferred embodiment of this technical solution, the rotating plate is located at the bottom of the connecting seat, and multiple grooves are provided, with the multiple grooves being adapted to the eccentric column.

[0011] As a further preferred embodiment of this technical solution, a connecting column is fixedly connected to the bottom end of the adjusting plate, a mounting bracket is fixedly connected to the bottom end of the connecting column, a tool holder is fixedly connected to the surface of the mounting bracket, a placement plate is fixedly connected to the inner wall of the tool holder, a connecting spring is fixedly connected to the inner wall of the tool holder, and a fixing clamp is fixedly connected to the end of the connecting spring away from the tool holder.

[0012] As a further preferred embodiment of this technical solution, the number of tool holders is set to multiple, and the interior of each tool holder is provided with a placement groove. The placement plate is located on top of the fixing clamp, and the number of fixing clamps is set to two, with the two fixing clamps adopting an arc-shaped structure.

[0013] This utility model provides an automatic tool changer for CNC machining centers, which has the following advantages:

[0014] (1) This utility model provides a dustproof shell on the sliding seat, which can protect the cutting tool from dust. When the cutting tool needs to be replaced, the drive motor is started, and its output shaft drives the drive gear to rotate. The transmission gear rotates accordingly and drives the opening and closing plate to rotate through the rotating shaft. The opening and closing plate moves in the moving slot. After rotating a certain angle, the sealing plate on the opening and closing plate is separated from the bottom of the mounting slot, which facilitates the installation of the cutting tool. When idle, the opening and closing plate seals the mounting slot again, thereby preventing dust or foreign objects from adhering to the cutting tool.

[0015] (2) By starting the rotary motor, the output shaft of the present invention drives the rotating plate to rotate, and the eccentric column rotates accordingly. Since the eccentric column is located inside the groove of the adjusting plate, the eccentric column rotates while pushing the adjusting plate to rotate. After the adjusting plate rotates to a certain angle, the eccentric column disengages from the groove. At the same time, the tool to be installed rotates to the installation position. Due to the lack of drive, the adjusting plate pauses briefly, thus facilitating the installation of the tool. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a bottom view of the structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the rotating plate and adjusting plate structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the tool holder and fixing clamp structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the opening and closing plate structure of this utility model.

[0021] In the diagram: 1. Dustproof housing; 2. Mounting slot; 3. Moving slot; 4. Connecting frame; 5. Drive motor; 6. Drive gear; 7. Transmission gear; 8. Rotating shaft; 9. Opening and closing plate; 10. Sliding seat; 11. Slide rail; 12. Mounting plate; 13. Cylinder; 14. Connecting seat; 15. Rotary motor; 16. Rotating plate; 17. Eccentric column; 18. Rotating rod; 19. Adjusting plate; 20. Groove; 21. Connecting column; 22. Mounting frame; 23. Tool holder; 24. Placement plate; 25. Connecting spring; 26. Fixing clamp. Detailed Implementation

[0022] 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.

[0023] This utility model provides a technical solution: such as Figure 1 and Figure 5 As shown in this embodiment, an automatic tool changer for a CNC machining center includes a dustproof housing 1. The top of the dustproof housing 1 has an installation groove 2, and the middle of the dustproof housing 1 has a moving groove 3. A connecting frame 4 is fixedly connected to the top of the dustproof housing 1. A drive motor 5 is fixedly connected to the top of the connecting frame 4. A drive gear 6 is fixedly sleeved on the output shaft of the drive motor 5. A transmission gear 7 meshes with the surface of the drive gear 6. A rotating shaft 8 is fixedly connected to the inner wall of the transmission gear 7. An opening and closing plate 9 is fixedly sleeved on the surface of the rotating shaft 8.

[0024] By setting a dustproof shell 1 on the sliding seat 10, the cutting tool can be protected from dust. When the cutting tool needs to be replaced, the drive motor 5 is started, and its output shaft drives the drive gear 6 to rotate. The transmission gear 7 rotates accordingly and drives the opening and closing plate 9 to rotate through the rotating shaft 8. The opening and closing plate 9 moves in the moving groove 3. After rotating a certain angle, the sealing plate on the opening and closing plate 9 disengages from the bottom of the mounting groove 2, which facilitates the installation of the cutting tool. When not in use, the opening and closing plate 9 seals the mounting groove 2 again, thereby preventing dust or foreign objects from adhering to the cutting tool.

[0025] The moving slot 3 adopts an arc-shaped structure, the connecting frame 4 adopts an L-shaped structure, the drive gear 6 and the transmission gear 7 are located between the dustproof housing 1 and the connecting frame 4, and the opening and closing plate 9 is located inside the dustproof housing 1. The opening and closing plate 9 is composed of a sealing plate and a protrusion, and the shape and size of the sealing plate and the mounting slot 2 correspond to each other.

[0026] A sliding seat 10 is fixedly connected to the top of the dustproof housing 1. A slide rail 11 is slidably connected to the side of the sliding seat 10 near the connecting frame 4. A mounting plate 12 is fixedly connected to the side of the slide rail 11 away from the sliding seat 10. A cylinder 13 is fixedly connected to the front of the mounting plate 12. The cylinder 13 and the sliding seat 10 are fixedly connected.

[0027] By activating cylinder 13, its output rod pushes slide seat 10 to slide on slide rail 11, thereby adjusting the positions of dustproof housing 1 and tool holder 23, which facilitates tool replacement and avoids interference with the machine tool during operation.

[0028] A connecting seat 14 is fixedly connected to the bottom end of the sliding seat 10, a rotary motor 15 is fixedly connected to the top end of the connecting seat 14, a rotating plate 16 is fixedly connected to the output shaft of the rotary motor 15, an eccentric column 17 is fixedly connected to the bottom end of the rotating plate 16, a rotating rod 18 is rotatably connected inside the connecting seat 14, an adjusting plate 19 is fixedly connected to the bottom end of the rotating rod 18, and a groove 20 is provided in the middle of the adjusting plate 19.

[0029] By starting the rotary motor 15, its output shaft drives the rotating plate 16 to rotate, and the eccentric column 17 rotates accordingly. Since the eccentric column 17 is located inside the groove 20 of the adjusting plate 19, the rotation of the eccentric column 17 pushes the adjusting plate 19 to rotate. After the adjusting plate 19 rotates to a certain angle, the eccentric column 17 disengages from the groove 20. At the same time, the tool to be installed rotates to the installation position, and the lack of drive causes the adjusting plate 19 to pause briefly, thus facilitating the installation of the tool.

[0030] The rotating plate 16 is located at the bottom of the connecting seat 14, and multiple grooves 20 are provided, which are adapted to the eccentric column 17.

[0031] A connecting post 21 is fixedly connected to the bottom end of the adjusting plate 19. A mounting bracket 22 is fixedly connected to the bottom end of the connecting post 21. A tool holder 23 is fixedly connected to the surface of the mounting bracket 22. A placement plate 24 is fixedly connected to the inner wall of the tool holder 23. A connecting spring 25 is fixedly connected to the inner wall of the tool holder 23. A fixing clamp 26 is fixedly connected to the end of the connecting spring 25 away from the tool holder 23.

[0032] By setting a placement plate 24 inside the tool holder 23, the tool can be conveniently limited, and under the elastic force of the connecting spring 25, the fixing plate 26 moves closer to the tool and contacts it, thereby improving the stability of the tool after installation.

[0033] There are multiple tool holders 23, and each tool holder 23 has a placement slot inside. The placement plate 24 is located on top of the fixing plate 26. There are two fixing plates 26, and the two fixing plates 26 adopt an arc-shaped structure.

[0034] This utility model provides an automatic tool changer for CNC machining centers, the specific working principle of which is as follows:

[0035] In use, the device is installed on the machine tool via the mounting plate 12. When the tool needs to be replaced, the cylinder 13 is activated, and its output rod pushes the sliding seat 10 to slide on the slide rail 11, causing one of the tool holders 23 to move directly below the device. The rotary motor 15 is then activated, and its output shaft drives the rotating plate 16 to rotate, causing the eccentric column 17 to rotate as well. Since the eccentric column 17 is located inside the groove 20 of the adjusting plate 19, the rotation of the eccentric column 17 pushes the adjusting plate 19 to rotate simultaneously. After the adjusting plate 19 has rotated a certain angle, the eccentric column 17 disengages from the groove 20. At the same time, once the tool is installed and rotated to the installation position, the drive motor 5 is activated, and its output shaft drives the drive gear 6 to rotate, which in turn drives the transmission gear 7 to rotate. This, in turn, drives the opening and closing plate 9 to rotate via the rotating shaft 8. The opening and closing plate 9 moves within the moving groove 3. After rotating a certain angle, the sealing plate on the opening and closing plate 9 disengages from the bottom of the mounting groove 2, allowing the mounting groove 2 to be opened, thus enabling the tool replacement.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tool changer for a numerically controlled machining center, comprising a dust-tight housing (1), characterized in that: The top of the dustproof shell (1) is provided with a mounting groove (2), the middle of the dustproof shell (1) is provided with a moving groove (3), the top end of the dustproof shell (1) is fixedly connected with a connecting frame (4), the top end of the connecting frame (4) is fixedly connected with a driving motor (5), the output shaft of the driving motor (5) is fixedly sleeved with a driving gear (6), the surface of the driving gear (6) is engaged with a transmission gear (7), the inner wall of the transmission gear (7) is fixedly connected with a rotating shaft (8), and the surface of the rotating shaft (8) is fixedly sleeved with an opening and closing plate (9).

2. The automatic tool changer of the numerically controlled machining center according to claim 1, characterized in that: The moving groove (3) adopts an arc structure, the connecting frame (4) adopts an L-shaped structure, the driving gear (6) and the transmission gear (7) are located between the dustproof shell (1) and the connecting frame (4), the opening and closing plate (9) is located inside the dustproof shell (1), the opening and closing plate (9) is composed of a sealing plate and a protruding block, and the sealing plate corresponds in shape and size to the mounting groove (2).

3. The automatic tool changer of claim 1, wherein: The top end of the dustproof shell (1) is fixedly connected with a sliding seat (10), one side of the sliding seat (10) close to the connecting frame (4) is slidingly connected with a sliding rail (11), the side, away from the sliding seat (10), of the sliding rail (11) is fixedly connected with a mounting plate (12), the front surface of the mounting plate (12) is fixedly connected with an air cylinder (13), and the air cylinder (13) is fixedly connected with the sliding seat (10).

4. The automatic tool changer of claim 3, wherein: The bottom end of the sliding seat (10) is fixedly connected with a connecting seat (14), the top end of the connecting seat (14) is fixedly connected with a rotating motor (15), the output shaft of the rotating motor (15) is fixedly connected with a rotating plate (16), the bottom end of the rotating plate (16) is fixedly connected with an eccentric column (17), the inside of the connecting seat (14) is rotatably connected with a rotating rod (18), the bottom end of the rotating rod (18) is fixedly connected with an adjusting plate (19), and the middle of the adjusting plate (19) is provided with a groove (20).

5. The automatic tool changer of claim 4, wherein: The rotating plate (16) is located at the bottom end of the connecting seat (14), a plurality of grooves (20) are arranged, and the plurality of grooves (20) are matched with the eccentric column (17).

6. The automatic tool changer of claim 4, wherein: The bottom end of the adjusting plate (19) is fixedly connected with a connecting column (21), the bottom end of the connecting column (21) is fixedly connected with a mounting frame (22), the surface of the mounting frame (22) is fixedly connected with a tool holder (23), the inner wall of the tool holder (23) is fixedly connected with a placing plate (24), the inner wall of the tool holder (23) is fixedly connected with a connecting spring (25), and the end, away from the tool holder (23), of the connecting spring (25) is fixedly connected with a fixed clamping plate (26).

7. The automatic tool changer of claim 6, wherein: A plurality of tool holders (23) are arranged, a placing groove is arranged in the inside of each tool holder (23), the placing plate (24) is located at the top of the fixed clamping plate (26), and the fixed clamping plate (26) adopts an arc structure.

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