Automatic tool changer for a milling machine

Abstract

The utility model relates to machine tool tool changing technical field discloses a kind of milling machine automatic tool changing device, including support plate, multiple mounting plates are evenly hinged in the circumferential direction of support plate, milling cutter is rotatably arranged on each mounting plate, fixed plate is arranged above support plate, transmission telescopic link is arranged between support plate and fixed plate, first drive assembly for driving mounting plate rotation and second drive assembly for controlling mounting plate up-down movement are arranged on fixed plate, milling cutter locking sleeve is rotatably arranged on the side of fixed plate, milling cutter locking sleeve is connected with power element, torsional spring is arranged at the hinge of mounting plate and support plate, in natural state, mounting plate and its upper milling cutter are upturned, top pressure piece is arranged on fixed plate, before milling cutter is inserted into milling cutter locking sleeve, top pressure piece is used to press mounting plate, so that milling cutter and milling cutter locking sleeve are in coaxial state.The utility model can realize the switching of multiple tool bits, and when processing, the influence of other tool bits on the tool bit in use can be reduced.

Description

Technical Field

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

[0002] Milling machines, as a common type of machining tool, are widely used in the processing of various parts. Due to the different types of parts being processed, different cutting tools are usually required. Currently, the conventional method of tool changing is manual tool changing, which is inefficient. Some newer machine tools are equipped with tool magazines and robotic arms to achieve automatic tool changing. However, such machine tools are relatively expensive and have high costs.

[0003] The existing Chinese utility model patent with announcement number CN223617296U and patent name "Automatic Tool Changer for Vertical Milling Machine" provides a vertical milling machine capable of automatic tool changing. This machine tool can realize the automatic switching of several tools. However, there are some problems with this structure. The height of multiple tools is always at the same height. During machining, when the tool in use is making a feed motion, the unused tool will occasionally interfere with the workpiece, causing the tool in use to be unable to make a feed motion.

[0004] To solve this problem, a new automatic tool changer for milling machines is needed. Utility Model Content

[0005] The purpose of this invention is to provide an automatic tool changer for milling machines, which can switch between multiple tool heads and reduce the impact of other tool heads on the tool head in use during machining.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: An automatic tool changer for a milling machine includes a support plate with multiple mounting plates circumferentially hinged to it. A milling cutter is rotatably mounted on each mounting plate. A fixed plate is positioned above the support plate. A transmission telescopic rod is provided between the support plate and the fixed plate. The fixed plate is equipped with a first drive assembly for driving the mounting plates to rotate and a second drive assembly for controlling the up-and-down movement of the mounting plates. A milling cutter locking sleeve is rotatably mounted on one side of the fixed plate and connected to a power component. A torsion spring is provided at the hinge point between the mounting plate and the support plate. In its natural state, the mounting plate and the milling cutter on it are tilted upwards. A pressing member is provided on the fixed plate. Before the milling cutter is inserted into the milling cutter locking sleeve, the pressing member presses against the mounting plate to ensure that the milling cutter and the milling cutter locking sleeve are coaxial.

[0007] As a further feature of this invention, the transmission telescopic rod includes a connecting sleeve rod fixedly connected to the support plate, and a rotating transmission rod is slidably disposed coaxially on the connecting sleeve rod. The rotating transmission rod is rotatably connected to the fixed plate and is connected to the first drive assembly.

[0008] As a further feature of this invention, a limiting groove is provided inside the connecting sleeve rod, and a limiting block is fixedly provided on the outer wall of the rotating transmission rod, with the limiting block slidably disposed in the limiting groove.

[0009] As a further feature of this invention, the first drive assembly includes a first synchronous wheel that is coaxially and fixedly connected to the rotating transmission rod, a second synchronous wheel that is rotatably disposed on the fixed plate, a synchronous belt that is disposed between the first synchronous wheel and the second synchronous wheel, and a first motor that is driven by the second synchronous wheel.

[0010] As a further feature of this invention, a support sleeve is rotatably connected to the connecting sleeve rod, and a support rod is fixedly connected to the outside of the support sleeve. The support rod extends upward and is slidably connected to the fixed plate. A transmission plate is fixedly connected to one end of the support rod located on the upper side of the fixed plate, and the transmission plate is connected to the second drive assembly.

[0011] As a further feature of this invention, at least two sets of support rods are provided.

[0012] As a further feature of this invention, the second drive assembly includes a hydraulic cylinder, which is vertically arranged and fixedly connected to the fixed plate, and the working end of the hydraulic cylinder is connected to the transmission plate.

[0013] As a further feature of this invention, the top-pressing component includes a top-pressing telescopic rod, one end of which is fixedly connected to the fixing plate and is disposed on the side facing the mounting plate.

[0014] As a further feature of this invention, two sets of top-pressing telescopic rods are provided, and the two sets of top-pressing telescopic rods are symmetrically distributed along the axis of symmetry of the mounting plate.

[0015] The beneficial effects of this utility model are: This utility model provides an automatic tool changer for a milling machine, which realizes automatic switching between multiple tools. When it is necessary to switch tools, the first drive component drives the support plate to rotate, so that the required tool rotates to be opposite the milling cutter locking sleeve. Then, the second drive component drives the support plate to rise, so that the tool is inserted into the milling cutter locking sleeve and automatically locked. The power component drives the milling cutter locking sleeve and the milling cutter to rotate synchronously for workpiece machining.

[0016] When in use, the unused tool is in an inclined state, which creates a certain height difference between the ends of the unused tool and the tool in use, thus avoiding interference between the unused tool and the workpiece. The setting of the top pressing component ensures that the tool and the milling cutter locking sleeve are in a coaxial state when connected. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the 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.

[0018] Figure 1 This is a schematic diagram of the overall structure of this embodiment; Figure 2 This is a schematic diagram of the transmission telescopic rod structure in this embodiment; In the diagram, 1. Support plate, 2. Mounting plate, 3. Milling cutter, 4. Fixing plate, 5. Transmission telescopic rod, 51. Connecting sleeve rod, 52. Rotating transmission rod, 53. Limiting groove, 54. Limiting block, 6. First drive assembly, 61. First synchronous pulley, 62. Second synchronous pulley, 63. Synchronous belt, 64. First motor, 7. Second drive assembly, 71. Hydraulic cylinder, 8. Milling cutter locking sleeve, 9. Power component, 10. Top pressing component, 11. Support sleeve, 12. Support rod, 13. Transmission plate. Detailed Implementation

[0019] The technical solution of this utility model will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0020] An automatic tool changer for a milling machine, reference Figure 1 and Figure 2 It includes a support plate 1, and multiple mounting plates 2 are evenly hinged to the support plate 1 around the circumference. Each mounting plate 2 is rotatably equipped with a milling cutter 3. Each mounting plate 2 and the support plate 1 is equipped with a torsion spring at the hinge point. In the natural state, the mounting plate 2 and the milling cutter 3 on it tilt upwards.

[0021] A transmission telescopic rod 5 is vertically arranged at the rotation center of the support plate 1. The transmission telescopic rod 5 includes a connecting sleeve rod 51 fixedly connected to the support plate 1. A rotating transmission rod 52 is slidably arranged coaxially on the connecting sleeve rod 51, so that the connecting sleeve rod 51 can rotate synchronously with the rotating transmission rod 52, while the connecting sleeve rod 51 can slide along the axial direction of the rotating transmission rod 52. Specifically, a limiting groove 53 is provided inside the connecting sleeve rod 51, and a limiting block 54 is fixedly provided on the outer wall of the rotating transmission rod 52. The limiting block 54 is slidably arranged in the limiting groove 53.

[0022] A rotating transmission rod 52 is connected to a fixed plate 4, which remains stationary. A first drive assembly 6 and a second drive assembly 7 are mounted on the fixed plate 4. The first drive assembly 6 is connected to the rotating transmission rod 52 to drive the entire assembly to rotate. The second drive assembly 7 is connected to the connecting sleeve rod 51 to drive the support plate 1 and the milling cutter 3 on it to move up and down. Specifically, the first drive assembly 6 includes a first synchronous pulley 61 coaxially and fixedly connected to the rotating transmission rod 52. A second synchronous pulley 62 is rotatably mounted on the fixed plate 4. A synchronous belt 63 is positioned between the first synchronous pulley 61 and the second synchronous pulley 62. The second synchronous pulley 62 is connected to a first motor 64.

[0023] A support sleeve 11 is rotatably connected to the connecting sleeve rod 51. A support rod 12 is fixedly connected to the outside of the support sleeve 11. The support rod 12 extends upward and is slidably connected to the fixed plate 4. A transmission plate 13 is fixedly connected to one end of the support rod 12 on the upper side of the fixed plate 4. The transmission plate 13 is connected to the second drive assembly 7. In this embodiment, two sets of support rods 12 are provided. In other embodiments, more than two sets of support rods 12 can be provided to ensure the overall structural stability. The second drive assembly 7 includes a hydraulic cylinder 71, which is vertically arranged and fixedly connected to the fixed plate 4. The working end of the hydraulic cylinder 71 is connected to the transmission plate 13. A milling cutter locking sleeve 8 is rotatably mounted on one side of the fixed plate 4. The milling cutter locking sleeve 8 is connected to a power component 9. In this embodiment, the power component 9 is a second motor. The milling cutter locking sleeve 8 is driven to rotate by the second motor. Through the action of the first drive component 6 and the second drive component 7, the desired milling cutter 3 is switched and docked with the milling cutter locking sleeve 8 to lock, thereby realizing the cutting action.

[0024] Since the mounting plate 2 and the milling cutter 3 are in a raised state, in order to facilitate the normal docking of the milling cutter 3 and the milling cutter locking sleeve 8, the fixing plate 4 is provided with a pressing member 10. Before the milling cutter 3 is inserted into the milling cutter locking sleeve 8, the pressing member is used to press the mounting plate 2 so that the milling cutter 3 and the milling cutter locking sleeve 8 are in a coaxial state.

[0025] The top-pressing component 10 includes a top-pressing telescopic rod, one end of which is fixedly connected to the fixed plate 4 and is positioned on the side facing the mounting plate 2. Two sets of top-pressing telescopic rods are provided, symmetrically distributed along the axis of symmetry of the mounting plate 2. When the support plate 1 rises, the mounting plate 2 first abuts against the top-pressing telescopic rod. Under the action of the top-pressing telescopic rod, the mounting plate 2 slowly rotates to a horizontal position, causing the milling cutter 3 on it to be in a vertical position and coaxial with the milling cutter locking sleeve 8. As the support plate 1 continues to rise, the milling cutter 3 inserts into the milling cutter locking sleeve 8 and automatically locks.

[0026] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An automatic tool changer for a milling machine, characterized in that, The system includes a support plate (1), on which multiple mounting plates (2) are evenly hinged in a circumferential direction. Each mounting plate (2) is rotatably equipped with a milling cutter (3). A fixing plate (4) is provided above the support plate (1). A transmission telescopic rod (5) is provided between the support plate (1) and the fixing plate (4). The fixing plate (4) is equipped with a first drive assembly (6) for driving the mounting plates (2) to rotate and a second drive assembly (7) for controlling the up-and-down movement of the mounting plates (2). One side of the fixing plate (4) rotates. A milling cutter locking sleeve (8) is provided, and a power component (9) is connected to the milling cutter locking sleeve (8). A torsion spring is provided at the hinge of the mounting plate (2) and the support plate (1). In its natural state, the mounting plate (2) and the milling cutter (3) on it are tilted upward. A top pressing component (10) is provided on the fixing plate (4). Before the milling cutter (3) is inserted into the milling cutter locking sleeve (8), the top pressing component (10) is used to press the mounting plate (2) so that the milling cutter (3) and the milling cutter locking sleeve (8) are in a coaxial state.

2. The automatic tool changer for a milling machine according to claim 1, characterized in that, The transmission telescopic rod (5) includes a connecting sleeve rod (51) fixedly connected to the support plate (1). The connecting sleeve rod (51) is slidably provided with a rotating transmission rod (52) on the same axis. The rotating transmission rod (52) is rotatably connected to the fixed plate (4). The rotating transmission rod (52) is connected to the first drive assembly (6).

3. The automatic tool changer for a milling machine according to claim 2, characterized in that, The connecting sleeve rod (51) is provided with a limiting groove (53) inside, and the outer wall of the rotating transmission rod (52) is fixedly provided with a limiting block (54), and the limiting block (54) is slidably disposed in the limiting groove (53).

4. The automatic tool changer for a milling machine according to claim 2, characterized in that, The first drive assembly (6) includes a first synchronous wheel (61) coaxially fixedly connected to the rotating transmission rod (52), a second synchronous wheel (62) rotatably disposed on the fixed plate (4), a synchronous belt (63) is disposed between the first synchronous wheel (61) and the second synchronous wheel (62), and the second synchronous wheel (62) is drivenly connected to a first motor (64).

5. The automatic tool changer for a milling machine according to claim 2, characterized in that, The connecting sleeve (51) is rotatably connected to a support sleeve (11), and a support rod (12) is fixedly connected to the outside of the support sleeve (11). The support rod (12) extends upward and is slidably connected to the fixed plate (4). A transmission plate (13) is fixedly connected to one end of the support rod (12) located on the upper side of the fixed plate (4). The transmission plate (13) is connected to the second drive assembly (7).

6. The automatic tool changer for a milling machine according to claim 5, characterized in that, The support rod (12) is provided in at least two sets.

7. The automatic tool changer for a milling machine according to claim 5, characterized in that, The second drive assembly (7) includes a hydraulic cylinder (71), which is vertically arranged and fixedly connected to the fixed plate (4). The working end of the hydraulic cylinder (71) is connected to the transmission plate (13).

8. The automatic tool changer for a milling machine according to claim 1, characterized in that, The top pressure member (10) includes a top pressure telescopic rod, one end of which is fixedly connected to the fixed plate (4) and is disposed on the side facing the mounting plate (2).

9. An automatic tool changer for a milling machine according to claim 8, characterized in that, The top-pressure telescopic rod is provided in two sets, and the two sets of top-pressure telescopic rods are symmetrically distributed along the axis of symmetry of the mounting plate (2).

Images