Automatic tool changing device for angle head of machine tool

Abstract

The utility model discloses an automatic tool changing device of a machine tool angle head, which comprises a base and an angle head body, a connecting seat is fixedly mounted at the bottom of the base, and a changing component for automatically changing the angle head body is arranged in the connecting seat. The double-shaft motor synchronously drives the two sets of threaded rods to rotate to drive the moving block and the clamping plate to move oppositely or oppositely, so that symmetrical movement of the moving block and the clamping plate is achieved, clamping and releasing synchronism and stability of the angle head body are guaranteed, and rigid locking is formed after the clamping plate is embedded into a mounting groove in the fixing ring. The angle head body can bear high-frequency vibration and impact loads in the machining process, deviation or looseness of the angle head body is avoided, the precision of the angle head body during replacement is ensured through precise threaded fit of the threaded rod and the moving block, and therefore the angle head body can be rapidly clamped and released through the replacement assembly, and the purpose of automatic replacement is achieved.

Description

Technical Field

[0001] This utility model relates to the field of angle head technology, specifically to an automatic tool changer for machine tool angle heads. Background Technology

[0002] An angle head is a machine tool accessory. After the machine tool is equipped with an angle head, the rotation center line of the cutting tool can be angled with the rotation center line of the spindle to machine the workpiece. Originating in Europe, it is now widely used in various fields of mechanical processing such as aerospace, automobile, and mold making. Using an angle head can increase the machining range and adaptability without changing the machine tool structure, enabling some machining processes that are difficult to complete using traditional methods, reducing the need for repeated workpiece clamping, and improving machining accuracy and efficiency.

[0003] The prior art provides a high-precision angle head for CNC machine tools (publication number CN218904332U), including an angle head body. A first connecting block is connected to the upper left side of the angle head body, and a second connecting block is connected to the upper right side of the angle head body. A first electric push rod is connected to the upper end of the first connecting block, and a second electric push rod is connected to the upper end of the second connecting block. The upper ends of both the first and second electric push rods are connected to a mounting block. This utility model, by setting up a mounting block, a first electric push rod, a second electric push rod, a first connecting block, a second connecting block, a left support plate, a right support plate, and a limiting ring, utilizes the mutual cooperation between them to achieve adjustment of the working height between the angle head body and the machine tool spindle, expanding the application range, enhancing flexibility, and making the angle head body more stable during operation, thus improving machining accuracy.

[0004] Based on the above patent search, the aforementioned patents require manual handling when replacing and maintaining the angle head. Manual disassembly and installation of the angle head requires gradually removing and installing bolts, positioning components, etc., and repeatedly calibrating the positioning, which is time-consuming and affects the continuous processing efficiency of the machine tool. Therefore, we need to propose an automatic tool changing device for the machine tool angle head. Utility Model Content

[0005] The purpose of this utility model is to provide an automatic tool changer for a machine tool angle head. By setting up a replacement component, a dual-axis motor synchronously drives two sets of threaded rods to rotate, which in turn drives the moving block and the clamping plate to move relative to or in opposite directions, thereby realizing the rapid clamping and release of the angle head body and achieving the purpose of automatic replacement, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An automatic tool changer for a machine tool angle head includes a base and an angle head body. A connecting seat is fixedly installed at the bottom of the base. A replacement component for automatically changing the angle head body is provided inside the connecting seat. An observation window is embedded on one side of the connecting seat.

[0008] The replacement component includes a dual-axis motor housed inside the connecting seat. Both output ends of the dual-axis motor are fixedly connected to threaded rods via couplings. Movable blocks are threadedly connected to the outer sides of the two sets of threaded rods. Connecting rods are installed on one side of each set of movable blocks. Snap-fit ​​plates are installed on the opposite sides of the two sets of connecting rods. A fixing ring is installed on the outer side of the angle head body. An installation groove for snap-fit ​​plates is provided on the outer side of the fixing ring.

[0009] Preferably, the mounting groove is annular, both sets of snap-fit ​​plates are arc-shaped, the inner walls of both sets of snap-fit ​​plates are in contact with the inner wall of the mounting groove, and both sets of connecting rods are L-shaped.

[0010] Preferably, two sets of limiting posts are installed on the opposite side of the two sets of snap-fit ​​plates, and four sets of limiting holes are opened inside the fixing ring for the insertion of the limiting posts. The four sets of limiting posts are respectively inserted into the four sets of limiting holes.

[0011] Preferably, the ends of the two sets of threaded rods away from the dual-axis motor are rotatably mounted inside the connecting seat, and the bottom of the connecting seat is provided with a through groove.

[0012] Preferably, a guide rod is fixedly installed inside the connecting seat, and a connecting block is installed on the top of each of the two sets of moving blocks. Both sets of connecting blocks are slidably disposed on the outside of the guide rod.

[0013] Preferably, a support base is fixedly installed on one side inside the connecting seat, and the bottom of the dual-axis motor is fixedly connected to the top of the support base, wherein the support base is L-shaped.

[0014] Preferably, a mounting plate is installed on the top of the base, and the top of the mounting plate has four sets of mounting holes.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This invention, through the replacement component design, enables a dual-axis motor to synchronously drive two sets of threaded rods to rotate, causing the moving block and the locking plate to move relative to or in opposite directions. This achieves symmetrical movement between the moving block and the locking plate, ensuring the synchronicity and stability of clamping and releasing the angle head body. The locking plate, after being embedded in the mounting groove on the fixing ring, forms a rigid lock, which can withstand high-frequency vibration and impact loads during processing, preventing the angle head body from shifting or loosening. The precision threaded fit between the threaded rod and the moving block ensures the accuracy of angle head body replacement. Therefore, the replacement component enables rapid clamping and release of the angle head body, achieving automatic replacement without the need for manual disassembly of bolts or positioning parts. It also eliminates the need for repeated manual adjustments during installation, thereby reducing operational complexity and ensuring processing continuity. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the replacement component of this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the limiting post and limiting hole of this utility model.

[0020] In the diagram: 1. Base; 2. Angle head body; 3. Connecting seat; 4. Replacement component; 41. Dual-axis motor; 42. Threaded rod; 43. Moving block; 44. Connecting rod; 45. Snap-fit ​​plate; 46. Fixing ring; 47. Mounting groove; 5. Limiting post; 6. Limiting hole; 7. Through groove; 8. Guide rod; 9. Connecting block; 10. Support seat; 11. Mounting plate; 12. Mounting hole. Detailed Implementation

[0021] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-3 This utility model provides a technical solution:

[0023] An automatic tool changer for a machine tool angle head includes a base 1 and an angle head body 2. A connecting seat 3 is fixedly installed at the bottom of the base 1. A replacement component 4 for automatically changing the angle head body 2 is provided inside the connecting seat 3. An observation window is embedded on one side of the connecting seat 3.

[0024] The replacement component 4 includes a dual-axis motor 41 located inside the connecting seat 3. Both output ends of the dual-axis motor 41 are fixedly connected to threaded rods 42 via couplings. Moving blocks 43 are threadedly connected to the outer sides of the two sets of threaded rods 42 respectively. Connecting rods 44 are installed on one side of the two sets of moving blocks 43 respectively. Snap-fit ​​plates 45 are installed on the opposite sides of the two sets of connecting rods 44 respectively. A fixing ring 46 is installed on the outer side of the angle head body 2. The outer side of the fixing ring 46 has an installation groove 47 for snap-fit ​​plates 45 to be snapped into place.

[0025] The mounting groove 47 is annular, and both sets of snap-fit ​​plates 45 are arc-shaped. The inner walls of both sets of snap-fit ​​plates 45 are in contact with the inner wall of the mounting groove 47. Both sets of connecting rods 44 are L-shaped. Through the arrangement of the mounting groove 47, snap-fit ​​blocks, and connecting rods 44, the contact between the annular mounting groove 47 and the arc-shaped snap-fit ​​plates 45 makes the clamping force evenly distributed along the circumference, avoiding local stress concentration, improving the stability of the positioning and installation of the angle head body 2, and preventing the angle head body 2 from shifting during operation. The L-shaped connecting rods 44 realize the misalignment of the moving block 43 and the snap-fit ​​plates 45, avoiding motion interference. At the same time, the L-shaped structure converts the linear driving force of the dual-axis motor 41 into the radial clamping force of the snap-fit ​​plates 45.

[0026] Two sets of limiting posts 5 are installed on opposite sides of the two sets of snap-fit ​​plates 45. The inside of the fixing ring 46 is provided with four sets of limiting holes 6 for the insertion of the limiting posts 5. The four sets of limiting posts 5 are inserted into the four sets of limiting holes 6 respectively. Through the setting of the limiting posts 5 and the limiting holes 6, the insertion and cooperation of the four sets of limiting posts 5 and the limiting holes 6 further enhances the stability of the snap-fit ​​of the angle head body 2 and prevents the angle head body 2 from shifting during operation.

[0027] Two sets of threaded rods 42 are rotatably mounted inside the connecting seat 3 at the ends away from the dual-axis motor 41. The bottom of the connecting seat 3 is provided with a through groove 7. Through the setting of the threaded rods 42 and the through groove 7, the other ends of the two sets of threaded rods 42 are rotatably connected to the connecting seat 3 through bearings or bushings, which reduces the frictional resistance during rotation and extends the service life of the dual-axis motor 41. The through groove 7 provides a vertical entry and exit channel for the angle head body 2, avoiding interference with the structure of the connecting seat 3 when changing tools.

[0028] A guide rod 8 is fixedly installed inside the connecting seat 3. A connecting block 9 is installed on the top of each of the two sets of moving blocks 43. Both sets of connecting blocks 9 are slidably arranged on the outside of the guide rod 8. Through the setting of the guide rod 8, the guide rod 8 provides a precise linear motion trajectory for the moving block 43, eliminates radial offset, and realizes the precise movement of the moving block 43.

[0029] A support base 10 is fixedly installed on one side inside the connector 3. The bottom of the dual-axis motor 41 is fixedly connected to the top of the support base 10. The support base 10 is L-shaped. The support base 10 provides support for the dual-axis motor 41. The L-shaped support base 10 forms a mechanical triangle area through a right-angle structure, which effectively enhances the stability of the installation of the dual-axis motor 41.

[0030] A mounting plate 11 is installed on the top of the base 1. The top of the mounting plate 11 has four sets of mounting holes 12. The mounting plate 11 and the mounting holes 12 facilitate the overall installation of the equipment on the machine tool. The four sets of mounting holes 12 form a rectangular array layout, which makes the weight of the equipment evenly distributed to the base 1, thereby improving the stability of the equipment installation.

[0031] Working Principle: When using this utility model, the entire equipment is moved to the position to be replaced via the control device on the machine tool. Then, the dual-axis motor 41 is started in reverse. The dual-axis motor 41 drives two sets of threaded rods 42 to rotate synchronously via the coupling. Using the thread transmission principle, the two sets of moving blocks 43 are driven to move symmetrically outward along the axis of the threaded rods 42. The moving blocks 43 drive the connecting rod 44 and the snap-fit ​​plate 45 to move symmetrically outward, causing the snap-fit ​​plate 45 to disengage from the mounting groove 47 of the fixing ring 46. At the same time, the limiting post 5 exits from the limiting hole 6, thereby releasing the locking of the angle head body 2. The robot or external mechanism can then connect via... The angle head body 2 is removed from the through groove 7 at the bottom of the connector 3, completing the disassembly. Then, the robot arm inserts the new angle head body 2 into the connector 3 through the through groove 7. The dual-axis motor 41 rotates forward to drive the threaded rod 42, which drives the two sets of moving blocks 43 to move inward symmetrically. The connecting rod 44 pushes the snap-fit ​​plate 45 to retract inward. The arc-shaped inner wall of the snap-fit ​​plate 45 fits tightly with the annular mounting groove 47 of the fixing ring 46. At the same time, the limiting post 5 is inserted into the limiting hole 6 of the fixing ring 46, which completes the locking and fixing of the angle head body 2, thereby realizing the quick clamping and release of the angle head body 2 and achieving the purpose of automatic replacement.

[0032] 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. An automatic tool changer for a machine tool angle head, comprising a base (1) and an angle head body (2), characterized in that: A connecting seat (3) is fixedly installed at the bottom of the base (1). Inside the connecting seat (3) is a replacement component (4) for automatically replacing the angle head body (2). An observation window is embedded on one side of the connecting seat (3). The replacement component (4) includes a dual-axis motor (41) disposed inside the connecting seat (3). Both output ends of the dual-axis motor (41) are fixedly connected to threaded rods (42) via couplings. The outer sides of the two sets of threaded rods (42) are respectively threaded with moving blocks (43). A connecting rod (44) is installed on one side of each of the two sets of moving blocks (43). A snap-fit ​​plate (45) is installed on the opposite side of each of the two sets of connecting rods (44). A fixing ring (46) is installed on the outer side of the angle head body (2). An installation groove (47) for snap-fit ​​plate (45) is opened on the outer side of the fixing ring (46).

2. The automatic tool changer for a machine tool angle head according to claim 1, characterized in that: The mounting groove (47) is arranged in a ring shape, the two sets of snap-fit ​​plates (45) are both arranged in an arc shape, the inner walls of the two sets of snap-fit ​​plates (45) are both in contact with the inner wall of the mounting groove (47), and the two sets of connecting rods (44) are both arranged in an L shape.

3. The automatic tool changer for a machine tool angle head according to claim 1, characterized in that: Two sets of limiting posts (5) are installed on opposite sides of the two sets of snap-fit ​​plates (45). The inside of the fixing ring (46) is provided with four sets of limiting holes (6) for the insertion of the limiting posts (5). The four sets of limiting posts (5) are respectively inserted into the four sets of limiting holes (6).

4. The automatic tool changer for a machine tool angle head according to claim 1, characterized in that: The ends of the two sets of threaded rods (42) away from the dual-axis motor (41) are respectively rotatably installed inside the connecting seat (3), and the bottom of the connecting seat (3) is provided with a through groove (7).

5. The automatic tool changer for a machine tool angle head according to claim 1, characterized in that: The connecting seat (3) is fixedly installed with a guide rod (8), and the top of the two sets of moving blocks (43) is respectively installed with a connecting block (9). The two sets of connecting blocks (9) are slidably arranged on the outside of the guide rod (8).

6. The automatic tool changer for a machine tool angle head according to claim 1, characterized in that: A support base (10) is fixedly installed on one side inside the connecting seat (3). The bottom of the dual-axis motor (41) is fixedly connected to the top of the support base (10). The support base (10) is L-shaped.

7. The automatic tool changer for a machine tool angle head according to claim 1, characterized in that: The base (1) is equipped with a mounting plate (11) on its top, and the mounting plate (11) has four sets of mounting holes (12) on its top.

Images