Automatic blade changing device for numerical control lathe

Abstract

The utility model discloses an automatic blade changing device for a numerical control lathe, and belongs to the field of numerical control lathes. In the device, an electric screwdriver is arranged to dismount and mount a positioning screw for fixing a rhombic blade, and the rhombic blade is magnetically attracted by an electromagnet in a tool changing device; the tool changing device completes the tool changing procedure through rotation and lifting actions.

Description

Technical Field

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

[0002] like Figure 1 The image shows the structure of a CNC lathe, model CK6140. This CNC lathe is mainly used for machining discs, shafts, sleeves, etc. The structure of this CNC lathe mainly includes a frame, on which a spindle and a movable tool post are mounted. A chuck is mounted on the spindle to clamp and fix one end of the product. The chuck usually has three jaws to ensure that the product's axis coincides with the spindle's axis. The CNC lathe has an internal tool post movable base on which a movable tool post is movably mounted; for example... Figure 2 As shown, a lathe tool is detachably mounted on the movable tool post, and a rhomboid insert is detachably mounted on the end of the tool. The insert needs to be replaced after a certain period of use. The traditional tool changing procedure is as follows: first, stop the machine; then, open the sealed door of the CNC lathe; and manually change the tool. This traditional tool changing method is inefficient. Summary of the Invention

[0003] The purpose of this utility model is to provide an automatic tool changing device for CNC lathes, which is an automated tool changing device.

[0004] The technical solution adopted in this utility model is as follows:

[0005] This utility model provides an automatic tool changer for a CNC lathe, comprising a tool changer mounted on a mounting base on one side of a movable tool post. The tool changer includes a first lifting cylinder mounted on the mounting base, with a lifting seat mounted on the top of its piston rod. A first rotary cylinder is mounted on the lifting seat, and a first support rod is mounted on the rotary table of the first rotary cylinder. The first support rod is vertically mounted, and a first support plate and a second support plate are sequentially mounted on it from bottom to top, with the first and second support plates arranged intersecting. At least one end of the first support plate is equipped with an electromagnet for magnetically attracting a rhombus-shaped tool insert. One end of the second support plate is equipped with an electric screwdriver for removing and installing a positioning screw, which is used to fix the rhombus-shaped tool insert in the tool groove.

[0006] Furthermore, the midpoint of the first support plate is connected to the first support main rod, and electromagnets are symmetrically installed at both ends of the first support plate.

[0007] Furthermore, the electric screwdriver includes a first drive motor and a screwdriver bit. The first drive motor is mounted on one end of the second support plate, and the screwdriver bit is connected to the drive shaft of the first drive motor. The screwdriver bit extends downward and is matched with the positioning screw. The screwdriver bit has magnetic attraction so that the removed positioning screw can be attracted to it.

[0008] Furthermore, a counterweight is symmetrically installed at the other end of the second support plate, and the counterweight has the same weight as one side of the electric screwdriver.

[0009] Furthermore, a rhomboid groove is formed at one corner of the upper surface of the cutting tool end, the shape of which matches the shape of the rhomboid cutting tool, and the groove is used to accommodate the rhomboid cutting tool; a frustum-shaped guide post is provided in the center of the groove, the guide post protruding from the bottom surface of the groove; a threaded connection hole is provided in the center of the guide post; the threaded connection hole of the guide post is used to connect a positioning screw.

[0010] Furthermore, the top surface of the positioning screw is provided with a hexagonal groove, which is adapted to a hexagonal screwdriver bit; the center of the rhomboid blade is provided with a through hole, and the positioning screw can pass through the through hole in the center of the rhomboid blade to press the rhomboid blade into the slot.

[0011] Furthermore, it also includes a spare tool holder, which includes a frame, a rotating frame on the frame, and multiple electromagnets on the rotating frame, which are distributed on the same horizontal circular track; each electromagnet attracts a spare blade.

[0012] Furthermore, the rotating frame includes four third support plates distributed at 90° and a second support rod. The four third support plates are of the same length, and one end of each third support plate is connected to the second support rod. An electromagnet is installed at the end of the third support plate away from the second support rod. The bottom end of the second support rod passes through the frame and is connected to a drive motor or a rotary cylinder.

[0013] Furthermore, it also includes a storage box, which is positioned below the rotation path of the electromagnet on the tool changing device.

[0014] The beneficial effects of this utility model are as follows: This utility model provides an automatic tool changing device for CNC lathes. In this device, the positioning screws for fixing the rhomboid tool are removed and installed by setting an electric screwdriver, and the rhomboid tool is attracted by an electromagnet in the tool changing device. The tool changing device completes the tool changing process by rotating and lifting. Attached Figure Description

[0015] Figure 1 The image shown is a structural diagram of a CNC lathe, model CK6140.

[0016] Figure 2 The diagram shows the relative positions of the device and the movable tool holder in this application.

[0017] Figure 3 The image shown is a detailed structural diagram of the end of the cutting tool.

[0018] Figure 4 The image shown is a diagram illustrating the internal structure of the tool groove.

[0019] Figure 5 The diagram shown is a display of the installation location of the tool changing device in this application.

[0020] Figure 6 The figure shown is a three-dimensional structural diagram of the tool changing device of this application.

[0021] Figure 7 The image shown is a schematic diagram of the bottom structure of an electromagnet according to this application.

[0022] Figure 8 The image shown is a three-dimensional structural diagram of the spare tool holder of this application.

[0023] Figure 9 The diagram shown is a structural representation of the electromagnet end of the third support plate of this application.

[0024] Figure 10 The diagram shown is an installation structure illustration of a storage box according to this application.

[0025] Explanation of reference numerals in the attached drawings: Spindle 1, Moving tool post 2, Chuck 3, Tool post moving base 4, Lathe tool 5, Tool groove 501, Guide post 502, Diamond-shaped insert 6, Positioning screw 7, Washer 8, Mounting seat 9, First lifting cylinder 10, First rotating cylinder 11, First support main rod 12, First support plate 13, Second support plate 14, Electric screwdriver 15, First drive motor 1501, Screwdriver bit 1502, Electromagnet 16; First guide rod 17, Lifting seat 18, Counterweight 19, Box 20, Diamond groove 21, Positioning post 22, Frame 23, Rotating frame 24, Third support plate 2401, Second support main rod 2402, Storage box 25, Connecting rod 2501, Support column 26. Detailed Implementation

[0026] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0027] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] This application provides an automatic tool changer for a CNC lathe. See also... Figure 1 As shown, the device of this application is installed inside the CNC lathe, located on the right side of the movable tool post 2. Figure 2 The diagram shows the relative positions of the device and the movable tool holder 2. Figure 2 As shown, a turning tool 5 is detachably mounted on the movable tool holder 2, specifically an external turning tool 5 of model SCLCR2525M12, and a rhomboid insert 6 is detachably mounted on the end of the turning tool 5. Specifically, as... Figure 3 The diagram shows a detailed structural representation of the end of the lathe tool 5. In this application, the end of the lathe tool 5 is rectangular, with a rhomboid groove 501 formed at one corner of its upper surface. The shape of the groove 501 matches the shape of the rhomboid insert 6, and the groove 501 is used to accommodate the rhomboid insert 6. Figure 4The diagram shows the internal structure of the cutter slot 501. A frustum-shaped guide post 502 protrudes from the bottom surface of the cutter slot 501 at its center. A threaded connection hole is located in the center of the guide post 502, used to connect the positioning screw 7. The positioning screw 7 shown in the diagram has a hexagonal groove on its top surface, which is fitted with a hexagonal screwdriver bit 1502. The hexagonal screwdriver bit 1502 is used to remove the positioning screw 7. Additionally, a washer 8 is fitted onto the guide post 502. Figure 3 As shown, the diamond-shaped blade 6 has a through hole in the center, and the positioning screw 7 can pass through the through hole in the center of the diamond-shaped blade 6 to press the diamond-shaped blade 6 into the blade groove 501.

[0031] The automatic blade changing device provided in this application is used to replace the rhomboid blade 6. Specifically, as shown... Figure 2 As shown, the automatic blade changing device includes at least a blade changing device. Figure 5 The diagram shows the installation position of the tool changer in this application. In this application, the tool post moving base 4 inside the CNC lathe is U-shaped, and a mounting seat 9 is provided on one side of the tool post moving base 4. The tool changer is mounted on the mounting seat 9. Figure 6 The diagram shown is a three-dimensional structural representation of the tool changing device of this application. The tool changing device mainly includes a first lifting cylinder 10, a first rotating cylinder 11, a first supporting main rod 12, a first supporting plate 13, a second supporting plate 14, an electric screwdriver 15, and an electromagnet 16. In this embodiment, a housing 20 is provided on the bottom surface of the mounting base 9. The first lifting cylinder 10 and two first guide rods 17 are installed inside the housing 20. The two first guide rods 17 are symmetrically arranged on both sides of the first lifting cylinder 10. The piston rod of the first lifting cylinder 10 passes upward through the through hole on the mounting base 9. A lifting seat 18 is installed at the top of the piston rod. Through holes are provided on both sides of the lifting seat 18. Two first guide rods 17 pass through the through holes on both sides of the lifting seat 18. Driven by the first lifting cylinder 10, the lifting seat 18 can move up and down along the first guide rods 17. A first rotary cylinder 11 is installed on the lifting seat 18. A first support main rod 12 is installed on the rotating platform of the first rotary cylinder 11. The first support main rod 12 is installed vertically. A first support plate 13 and a second support plate 14 are installed on the first support main rod 12 from bottom to top. The first support plate 13 is located below the second support plate 14, and the first support plate 13 and the second support plate 14 are arranged intersectingly, that is, there is an angle between the first support plate 13 and the second support plate 14 in the top view.

[0032] like Figure 6As shown in the illustration, in one specific embodiment of this application, the first support plate 13 and the second support plate 14 are of the same length, and the midpoint of the first support plate 13 and the second support plate 14 is connected to the first support main rod 12. In a top view, the included angle between the first support plate 13 and the second support plate 14 is 90°. An electromagnet 16 is mounted at least one end of the first support plate 13, and the electromagnet 16 is used to magnetically attract the rhomboid blade 6. Figure 6 In the first support plate 13, two identical electromagnets 16 are symmetrically arranged at both ends. Alternatively, an electromagnet 16 can be installed at one end of the first support plate 13, and a counterweight of the same weight can be symmetrically installed at the other end.

[0033] like Figure 6 As shown, an electric screwdriver 15 is mounted on one end of the second support plate 14. The electric screwdriver 15 includes a first drive motor 1501 and a screwdriver bit 1502. The first drive motor 1501 is mounted on one end of the second support plate 14, and the screwdriver bit 1502 is connected to the drive shaft of the first drive motor 1501. The screwdriver bit 1502 extends downward and is matched with the positioning screw 7. The screwdriver bit 1502 is magnetic and can attract the disassembled positioning screw 7 to it. In addition, counterweights 19 are symmetrically mounted on the other end of the second support plate 14. The counterweights 19 have the same weight as one side of the electric screwdriver 15.

[0034] See Figure 2As shown, the working principle of the automatic blade changing device described in this application is as follows: Two electromagnets 16 are provided on the first support plate 13, one of which has a spare rhomboid blade 6 attached to it; the movable tool holder 2 moves to the side of the blade changing device, and the rhomboid blade 6 on the lathe tool 5 is located directly below the electric screwdriver 15. The first lifting cylinder 10 drives the electric screwdriver 15 to descend, so that the bottom end of the screwdriver bit 1502 is inserted into the groove on the top surface of the positioning screw 7; then, the first drive motor 1501 drives the screwdriver bit 1502 to rotate, and at the same time, the first lifting cylinder 10 rises to remove the positioning screw 7; the removed positioning screw 7 is attached to the bottom end of the screwdriver bit 1502. Next, the first rotary cylinder 11 drives the first support rod 12 to rotate, so that the electromagnet 16, which is not attracting the rhomboid blade 6, is positioned above the rhomboid blade 6 on the cutting tool 5. The electromagnet 16 descends and approaches the rhomboid blade 6 on the cutting tool 5. Then, the electromagnet 16 is powered on to attract the rhomboid blade 6 on the cutting tool 5. The electromagnet 16 rises to separate the rhomboid blade 6 from the cutting tool 5. Next, the first rotary cylinder 11 drives the first support rod 12 to rotate, so that the electromagnet 16 attracting the rhomboid blade 6 is positioned above the rhomboid blade 6 on the cutting tool 5. The electromagnet 16 descends to place the rhomboid blade 6 on the guide post 502 of the tool slot 501. The electromagnet 16 is de-energized to release the rhomboid blade 6. Next, the first rotary cylinder 11 drives the first support rod 12 to rotate, so that the electric screwdriver 15 is positioned directly above the replaced rhomboid blade 6. The electric screwdriver 15 descends to reinstall the positioning screw 7 attracted at the bottom onto the cutting tool 5. Finally, the tool changing device rises, and the movable tool holder 2 moves to the working position.

[0035] Furthermore, such as Figure 7 The diagram shows the bottom structure of an electromagnet 16 according to this application. In one specific embodiment, the bottom surface of the end of the first support plate 13 where the electromagnet 16 is mounted is provided with a diamond-shaped groove 21. The shape of the diamond-shaped groove 21 matches the shape of the diamond-shaped blade 6, and the diamond-shaped blade 6 can be positioned within the diamond-shaped groove 21. Furthermore, a downwardly protruding positioning post 22 can be further provided within the diamond-shaped groove 21. The positioning post 22 is frustum-shaped and can be inserted into the through hole in the middle of the diamond-shaped blade 6.

[0036] In the above embodiments, only one spare blade can be replaced. This application also provides another solution that allows for the replacement of more spare blades. The specific solution is as follows.

[0037] like Figure 2 As shown, a spare tool holder can also be installed on the outside of the tool changing device. The spare tool holder includes a frame 23, on which a rotating frame 24 is installed. The rotating frame 24 is equipped with multiple electromagnets 16, which are distributed on the same horizontal circular track. Each electromagnet 16 can attract one spare blade.

[0038] like Figure 8The image shown is a three-dimensional structural diagram of a spare tool holder according to this application. Figure 8 , Figure 9 As shown, the rotating frame 24 includes four third support plates 2401 distributed at 90° intervals and a second support main rod 2402. The four third support plates 2401 are of equal length, and one end of each plate is connected to the second support main rod 2402. An electromagnet 16 is installed at the end of each third support plate 2401 away from the second support main rod 2402. The bottom end of the second support main rod 2402 passes through the frame 23 and connects to a drive motor or a rotary cylinder. Figure 9 The diagram shown is a structural illustration of the electromagnet 16 end of the third support plate 2401 of this application. In a preferred embodiment, a rhomboid groove 21 is formed on the electromagnet 16 end of the third support plate 2401. The shape of the rhomboid groove 21 matches the shape of the rhomboid blade 6, and the rhomboid blade 6 can be positioned within the rhomboid groove 21.

[0039] The working process of the aforementioned spare tool holder in this application is as follows: the electromagnet 16 on the tool changing device rotates to above one of the spare blades on the spare tool holder, the corresponding electromagnet 16 on the spare tool holder is de-energized and releases the spare blade; the electromagnet 16 on the tool changing device descends and is powered to attract the spare blade; the spare tool holder rotates so that one of the other spare blades is in the tool changing position, ready for the next tool change.

[0040] Furthermore, this application may also include a storage box 25 for collecting the replaced blades. For example... Figure 8 As shown, the storage box 25 is positioned below the rotation path of the electromagnet 16 on the tool changing device. When the electromagnet 16 attracts the replaced blade and rotates above the storage box 25, the power is cut off, and the replaced blade falls into the storage box 25. Figure 10 The figure shows an installation structure diagram of a storage box 25 according to this application. In one specific embodiment of this application, the storage box 25 is detachably mounted on a support column 26. The support column 26 shown in the figure is a profile with a slot on its top surface; the bottom surface of the storage box 25 is provided with a plug rod 2501, which can be inserted into the slot of the support column 26.

[0041] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. An automatic tool changer for a CNC lathe, characterized in that, The device includes a tool changing device, which is mounted on a mounting base (9) on one side of the movable tool holder (2). The tool changing device includes a first lifting cylinder (10), which is mounted on the mounting base (9), and a lifting seat (18) is mounted on the top of its piston rod. A first rotary cylinder (11) is mounted on the lifting seat (18), and a first support main rod (12) is mounted on the rotary table of the first rotary cylinder (11). The first support main rod (12) is installed vertically, and the first support main rod (12) is installed with the following components from bottom to top: A first support plate (13) and a second support plate (14) are installed, the first support plate (13) and the second support plate (14) are arranged crosswise, at least one end of the first support plate (13) is equipped with an electromagnet (16), the electromagnet (16) is used to magnetically attract the rhomboid blade (6); one end of the second support plate (14) is equipped with an electric screwdriver (15), the electric screwdriver (15) is used to remove and install a positioning screw (7), the positioning screw (7) is used to fix the rhomboid blade (6) in the tool groove (501) of the lathe tool (5).

2. The automatic tool changer for CNC lathes according to claim 1, characterized in that, The midpoint of the first support plate (13) is connected to the first support rod (12), and electromagnets (16) are symmetrically installed at both ends of the first support plate (13).

3. The automatic tool changer for CNC lathes according to claim 1, characterized in that, The electric screwdriver (15) includes a first drive motor (1501) and a screwdriver bit (1502). The first drive motor (1501) is mounted on one end of the second support plate (14). The screwdriver bit (1502) is connected to the drive shaft of the first drive motor (1501). The screwdriver bit (1502) extends downward and is matched with the positioning screw (7). The screwdriver bit (1502) has magnetic properties and can attract the disassembled positioning screw (7) to it.

4. The automatic tool changer for CNC lathes according to claim 1, characterized in that, A counterweight (19) is symmetrically installed at the other end of the second support plate (14), and the counterweight (19) has the same weight as one side of the electric screwdriver (15).

5. The automatic tool changer for CNC lathes according to claim 1, characterized in that, A rhomboid groove (501) is formed at one corner of the upper surface of the end of the cutting tool (5). The shape of the groove (501) matches the shape of the rhomboid blade (6). The groove (501) is used to accommodate the rhomboid blade (6). A frustum-shaped guide post (502) is provided in the center of the groove (501). The guide post (502) protrudes from the bottom surface of the groove (501). A threaded connection hole is provided in the center of the guide post (502). The threaded connection hole of the guide post (502) is used to connect the positioning screw (7).

6. The automatic tool changer for CNC lathes according to claim 5, characterized in that, The top surface of the positioning screw (7) is provided with a hexagonal groove, which is adapted to a hexagonal screwdriver bit (1502); the center of the rhomboid blade (6) is provided with a through hole, and the positioning screw (7) can pass through the through hole in the center of the rhomboid blade (6) to press the rhomboid blade (6) into the tool groove (501).

7. The automatic tool changer for CNC lathes according to claim 1, characterized in that, It also includes a spare tool holder, which includes a frame (23), a rotating frame (24) is provided on the frame (23), and multiple electromagnets (16) are provided on the rotating frame (24). The electromagnets (16) are distributed on the same horizontal circular track; a spare blade is attracted to each electromagnet (16).

8. The automatic tool changer for a CNC lathe according to claim 7, characterized in that, The rotating frame (24) includes four third support plates (2401) distributed at 90° and a second support rod (2402). The four third support plates (2401) are of the same length, and one end of each of the four third support plates (2401) is connected to the second support rod (2402). An electromagnet (16) is provided at the end of the third support plate (2401) away from the second support rod (2402). The bottom end of the second support rod (2402) passes through the frame (23) and is connected to a drive motor or a rotary cylinder.

9. The automatic tool changer for a CNC lathe according to any one of claims 1-8, characterized in that, It also includes a storage box (25), which is located below the rotation path of the electromagnet (16) on the tool changing device.

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