Rotary tool changing frame of numerical control machine tool

Abstract

The utility model relates to the technical field of tool changing frames, in particular to a numerical control machine tool rotary type tool changing frame which comprises a machine base, a tool changing frame body is installed at the top of the machine base, and a changing assembly is installed in the tool changing frame body. By rotating the rotating shaft, a required cutter body can be quickly and accurately rotated to a machining position, complicated tools or additional operation steps are not needed, the convenience of cutter changing operation is greatly improved, and when the required cutter body is rotated and adjusted for machining, the locking tooth block and the locking gear are used for clamping the rotating shaft, so that the machining precision is improved. By means of the technical scheme, the rotation problem is prevented, it is guaranteed that the angle and the position of the cutter body are kept unchanged all the time in the machining process, position deviation of the cutter body caused by vibration or other external force factors in the machining process is prevented, the accuracy and stability of the cutter body in the machining process are guaranteed, and therefore the machining precision is improved.

Description

Technical Field

[0001] The present application relates to the technical field of tool changers, and in particular to a rotary tool changer for CNC machine tools. Background Art

[0002] CNC machine tools are high-precision, high-efficiency automated machine tools. They mainly use turning tools to turn rotating workpieces. The turning tools generally need to be fixed on the tool changer. The CNC machine tool controls the tool changer to move and turn. Since multiple sets of tools of different specifications are installed on the tool changer, it is often necessary to rotate the tool changer to replace different tools during the turning process of the workpiece. During the rotation of the tool changer, the tool changer is generally rotated by the tool change shaft.

[0003] At present, in the process of rotating and replacing cutting tools, the existing tool changer not only needs to use a variety of complex tools and spends a lot of time to perform complex movements to replace the cutting tools, but also it is difficult to ensure the accuracy and stability of the tool position after the tool is replaced. Due to the lack of a locking mechanism, there are vibrations and other external force factors during the processing, which can easily cause the tool change shaft to rotate, resulting in position displacement or angle changes of the cutting tools during the processing, which will directly lead to processing errors and reduce product quality. Therefore, in order to solve the above problems, the present application provides a rotary tool changer for CNC machine tools. Utility Model Content

[0004] In order to solve the problem that the existing tool changer needs to be replaced with the help of multiple complex tools and it is difficult to ensure the accuracy and stability of the tool position, the present application provides a rotary tool changer for CNC machine tools.

[0005] The present application provides a rotary tool changer for a CNC machine tool, comprising a machine base, a tool changer body being mounted on the top of the machine base, a replacement assembly being mounted inside the tool changer body, the replacement assembly comprising a rotating shaft rotatably connected to the inside of the tool changer body, a tool change handwheel being fixed to one end of the rotating shaft, a tool change disc being fixed to the other end of the rotating shaft, a plurality of groups of cutter bodies arranged in a ring being provided on one side of the tool change disc, a locking gear being fixed to the side of the rotating shaft surface close to the tool change handwheel, a locking tooth block being abutted against the surface of the locking gear, and the locking tooth block being clamped in a tooth groove clamped on the surface of the locking gear.

[0006] Preferably, a lifting plate is fixed to the top of the locking tooth block, a lifting seat is fixed to the side of the tool changer body surface close to the lifting plate, and the lifting plate is slidably connected to a yield groove opened inside the lifting seat.

[0007] Preferably, a spring is fixed between the lifting plate and the lifting seat, and a lifting rod is fixed to the middle of the surface of the lifting plate. A lifting pull adapted to the lifting rod is provided inside the lifting seat, and a pull ring is fixed to the top of the lifting rod.

[0008] Preferably, a fixing component is installed between the tool body and the tool changing disc, and the fixing component includes a tool holder fixed on the surface of the tool body, and a fixing seat adapted to the tool holder is fixed inside the tool changing disc, and two groups of symmetrically arranged fixing blocks are hinged on one side of the tool holder, and a compression spring sheet is abutted between the two groups of fixing blocks, and the compression spring sheet is fixed inside the tool holder through a positioning shaft.

[0009] Preferably, a fixing slot adapted to the fixing block is provided inside the fixing seat, and the fixing slot is divided into an inserting slot and a locking slot, the inserting slot is a trapezoidal structure, and the locking slot is a rectangular structure.

[0010] Preferably, the internal rotation of the fixed seat is connected to a bidirectional screw rod, and the surface of the bidirectional screw rod is symmetrically threaded with threaded plates on both sides, and one end of the bidirectional screw rod passes through the interior of the fixed seat and extends to the outside of the tool changing disc, and is fixedly connected to a rotating handwheel arranged on the outside of the tool changing disc.

[0011] In summary, this application has the following beneficial technical effects:

[0012] By designing a replacement component and a fixed component, when the tool changer is in use, the lock of the rotating axis is released and the rotating axis rotates to realize the rotation adjustment of different cutter bodies for processing. No complicated tools or additional operating steps are required, which greatly improves the convenience of tool changing operation. The required cutter body can be rotated to the processing position quickly and accurately. When the required cutter body is rotated and adjusted for processing, the locking tooth block and the locking gear are used to clamp the rotating axis to prevent self-rotation problems, ensuring that the angle and position of the cutter body remain unchanged during the processing, ensuring processing accuracy and avoiding processing errors caused by accidental rotation of the rotating axis. It can also effectively prevent the cutter body from being offset due to vibration or other external forces during the processing, ensuring the accuracy and stability of the cutter body during the processing, thereby improving processing accuracy. By turning the rotating handwheel, the fixed clamping block can be squeezed to shorten the distance between the two, and the cutter body can be removed from the inside of the tool changer. Then, a new cutter body can be inserted into the inside of the tool changer, thereby quickly completing the installation and removal of the cutter body. The tool can be loaded and unloaded without complicated tools or tedious steps, and the operation is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall structure of the device in the embodiment of the present application;

[0014] Figure 2 is a cross-sectional view of the lifting seat of the device in the embodiment of the present application;

[0015] Figure 3 is a cross-sectional view of the tool changer disc of the device in the embodiment of the present application;

[0016] Figure 4 It is a schematic diagram of the structure of the blade holder and the fixing seat of the device in the embodiment of the present application.

[0017] Explanation of the accompanying symbols: 1. Machine base; 2. Tool holder body; 3. Rotating shaft; 4. Tool changing handwheel; 5. Tool changing disc; 6. Tool body; 7. Locking gear; 8. Locking gear block; 9. Lifting plate; 10. Lifting seat; 11. Spring; 12. Lifting rod; 13. Pull ring; 14. Tool holder; 15. Fixed block; 16. Compression spring; 17. Fixed seat; 18. Bidirectional screw; 19. Threaded plate; 20. Rotating handwheel. DETAILED DESCRIPTION

[0018] The following is combined with Figure 1 - Figure 4 This application is described in further detail.

[0019] Example:

[0020] A rotary tool changer for CNC machine tools, referring to Figure 1 - Figure 2 , including a machine base 1, a tool changer body 2 is installed on the top of the machine base 1, and a replacement component is installed inside the tool changer body 2. By replacing the component, the required tool body 6 can be rotated to the processing position quickly and accurately, which effectively saves the tool change time and enhances the versatility and practicality of the equipment. The replacement component includes a rotating shaft 3 rotatably connected to the inside of the tool changer body 2, one end of the rotating shaft 3 is fixed with a tool changer handwheel 4, and the other end of the rotating shaft 3 is fixed with a tool changer disc 5. One side of the tool changer disc 5 is provided with several groups of tool bodies 6 arranged in a ring, and a locking gear 7 is fixed on the side of the rotating shaft 3 close to the tool changer handwheel 4. The surface of the locking gear 7 is abutted with a locking tooth block 8, and the locking tooth block 8 is clamped in the tooth groove clamped on the surface of the locking gear 7. The locking between the locking tooth block 8 and the locking gear 7 is used to clamp the rotating shaft 3 to prevent the problem of self-rotation.

[0021] When in use, when the cutter body 6 needs to be rotated and replaced, the locking tooth block 8 and the locking gear 7 are separated to release the lock between the locking tooth block 8 and the locking gear 7, and then the tool-changing hand wheel 4 is manually turned to drive the rotating shaft 3 to rotate inside the tool-changing frame body 2, thereby driving the tool-changing disc 5 and the cutter body 6 installed on its surface to rotate, so as to change the position of different cutter bodies 6, and realize the rotation adjustment of different cutter bodies 6 for processing, without the need for complicated tools or additional operating steps, which greatly improves the convenience of the tool-changing operation, and can quickly and accurately rotate the required cutter body 6 to the processing position, effectively saving the tool-changing time and increasing The versatility and practicality of the equipment are enhanced. When the required cutter body 6 is rotated and adjusted for processing, the locking tooth block 8 and the locking gear 7 are locked to clamp the rotating shaft 3 to prevent self-rotation problems. This ensures that the angle and position of the cutter body 6 remain unchanged during the processing, guarantees processing accuracy, avoids processing errors caused by accidental rotation of the rotating shaft 3, and can effectively prevent the cutter body 6 from positionally shifting due to vibration or other external forces during the processing, thereby ensuring the accuracy and stability of the cutter body 6 during the processing, thereby improving processing accuracy and contributing to the production of high-quality products.

[0022] Reference Figure 1 - Figure 2 A lifting plate 9 is fixed to the top of the locking tooth block 8, a lifting seat 10 is fixed to the side of the surface of the tool changer body 2 close to the lifting plate 9, and the lifting plate 9 is slidably connected to the give way groove opened inside the lifting seat 10, a spring 11 is fixed between the lifting plate 9 and the lifting seat 10, and a lifting rod 12 is fixed to the middle of the surface of the lifting plate 9, a lifting pull adapted to the lifting rod 12 is opened inside the lifting seat 10, and a pull ring 13 is fixed to the top of the lifting rod 12;

[0023] When in use, the pull ring 13 is manually pulled upward, and the pull ring 13 drives the lifting plate 9 to lift up inside the lifting seat 10 through the lifting rod 12, thereby squeezing the spring 11 to deform and generate elastic force, thereby driving the locking tooth block 8 to move upward synchronously, so that the locking tooth block 8 and the locking gear 7 are separated, and the lock between the locking tooth block 8 and the locking gear 7 is released. When the required cutter body 6 is rotated and adjusted for processing, by loosening the pull ring 13, the lifting plate 9 can be pushed under the action of the rebound force of the spring 11 to drive the locking tooth block 8 to move in the opposite direction inside the lifting seat 10, thereby engaging the locking tooth block 8 in the tooth groove opened on the surface of the locking gear 7, and automatically completing the locking of the locking tooth block 8 and the locking gear 7, so as to clamp the rotating shaft 3 and prevent self-rotation problems.

[0024] Reference Figure 3 - Figure 4, a fixing assembly is installed between the cutter body 6 and the cutter disc 5, and the fixing assembly includes a cutter seat 14 fixed to the surface of the cutter body 6, and a fixing seat 17 adapted to the cutter seat 14 is fixed inside the cutter disc 5. Two groups of symmetrically arranged fixing blocks 15 are hinged on one side of the cutter seat 14, and a compression spring 16 is abutted between the two groups of fixing blocks 15, and the compression spring 16 is fixed to the inside of the cutter seat 14 through a positioning shaft. Under the action of the elastic force of the compression spring 16, the two groups of fixing blocks 15 move away from each other and reset, thereby completing the fixation of the cutter seat 14 and the fixing seat 17, thereby quickly completing the installation and disassembly of the cutter body 6, and the tool can be loaded and unloaded without complicated tools or cumbersome steps, and the operation is simple and convenient;

[0025] During use, when the cutter body 6 is severely worn or damaged and needs to be disassembled and replaced, the new cutter body 6 is inserted into the interior of the cutter disc 5. Through the trapezoidal insertion groove at the front of the fixed card slot, the arc surfaces of the two groups of fixed blocks 15 can be automatically squeezed so that the two are close to each other until the fixed blocks 15 are pushed into the rectangular locking groove at the rear of the fixed card slot. Under the action of the elastic force of the compression spring 16, the two groups of fixed blocks 15 move away from each other and reset, and the fixation of the tool holder 14 and the fixed seat 17 can be completed, thereby quickly completing the installation and disassembly of the cutter body 6. The tool can be loaded and unloaded without complicated tools or tedious steps. The operation is simple and convenient. When the tool is severely worn or damaged, it can be quickly replaced, which greatly shortens the time required for tool replacement, enables the production process to be restored faster, and improves the overall production efficiency.

[0026] A fixing slot is provided inside the fixing seat 17 to match the fixing block 15. The fixing slot is divided into an insertion slot and a locking slot. The insertion slot is a trapezoidal structure, and the locking slot is a rectangular structure. A bidirectional screw rod 18 is rotatably connected to the inside of the fixing seat 17. The two sides of the surface of the bidirectional screw rod 18 are symmetrically threaded with a threaded plate 19. One end of the bidirectional screw rod 18 passes through the interior of the fixing seat 17 and extends to the outside of the tool changer 5, and is fixedly connected to a rotating hand wheel 20 provided on the outside of the tool changer 5.

[0027] When in use, by turning the rotating hand wheel 20, the rotating hand wheel 20 drives the bidirectional screw rod 18 to rotate inside the fixed seat 17, thereby driving the threaded plates 19 on both sides of its surface to move relatively and approach the surface of the fixed clamping block 15. When the threaded plates 19 contact the surface of the fixed clamping block 15, they will squeeze the fixed clamping block 15, causing the compression spring 16 to deform and generate elastic force, which can make the two sets of fixed clamping blocks 15 rotate on one side of the tool holder 14 respectively and shorten the distance between them so that they can smoothly pass through the fixed clamping groove opened inside the fixed seat 17. Then, by pulling the tool holder 14, the fixed clamping block 15 and the compression spring 16 are pulled out from the inside of the fixed seat 17, and the cutter body 6 can be removed from the inside of the tool changer 5. The cutter body 6 can be quickly removed, and when facing workpieces of different materials or complex processing techniques during the processing, the appropriate cutter body 6 can be selected more flexibly according to different processing requirements. The convenient disassembly is also conducive to the maintenance and repair of the cutter body 6, thereby extending the service life of the tool.

[0028] The present invention relates to a rotary tool changer for a CNC machine tool. The working principle of the rotary tool changer of the present invention is as follows: by pulling the pull ring 13 upward, the lock between the locking tooth block 8 and the locking gear 7 can be released, and then the tool change hand wheel 4 is turned to drive the rotating shaft 3 to rotate inside the tool changer body 2, thereby driving the tool change disc 5 and the tool body 6 installed on its surface to rotate, so as to change the position of different tool bodies 6, and realize rotation adjustment of different tool bodies 6 for processing. No complicated tools or additional operating steps are required, which greatly improves the convenience of tool change operation. The required tool body 6 can be rotated to the processing position quickly and accurately, effectively saving tool change time and enhancing the versatility and practicality of the equipment. When the required tool body 6 is rotated and adjusted for processing, the locking between the locking tooth block 8 and the locking gear 7 is used to clamp the rotating shaft 3 to prevent the problem of self-rotation, thereby ensuring that the angle and position of the tool body 6 remain unchanged during the processing, ensuring the processing accuracy and avoiding the problem of The tool holder 14 is pulled out from the inside of the fixed seat 17, and the tool body 6 can be removed from the inside of the tool changer 5. Then, the new tool body 6 is inserted into the inside of the tool changer 5, thereby quickly completing the installation and disassembly of the tool body 6. The tool can be loaded and unloaded without complicated tools or tedious steps. The operation is simple and convenient. When the tool is seriously worn or damaged, it can be quickly replaced, which greatly shortens the time required to replace the tool, enables the production process to resume faster, and improves the overall production efficiency.

[0029] The above describes an exemplary implementation of a rotary tool changer for a CNC machine tool provided by the present disclosure with reference to preferred embodiments. However, it will be understood by those skilled in the art that, without departing from the concept of the present disclosure, various modifications and variations may be made to the above-mentioned specific embodiments, and various combinations of the various technical features and structures proposed in the present disclosure may be made without exceeding the scope of protection of the present disclosure, which is determined by the appended claims.

Claims

1. A rotary tool changer for a CNC machine tool, comprising a machine base (1), characterized in that: A tool changer body (2) is installed on the top of the machine base (1), and a replacement assembly is installed inside the tool changer body (2). The replacement assembly includes a rotating shaft (3) rotatably connected to the inside of the tool changer body (2), a tool change handwheel (4) is fixed to one end of the rotating shaft (3), and a tool change disc (5) is fixed to the other end of the rotating shaft (3). One side of the tool change disc (5) is provided with a plurality of groups of knife bodies (6) arranged in a ring shape, and a locking gear (7) is fixed on the side of the surface of the rotating shaft (3) close to the tool change handwheel (4), and a locking tooth block (8) is abutted on the surface of the locking gear (7), and the locking tooth block (8) is engaged in a tooth groove provided on the surface of the locking gear (7).

2. The rotary tool changer for a CNC machine tool according to claim 1, characterized in that: A lifting plate (9) is fixed on the top of the locking tooth block (8), a lifting seat (10) is fixed on the side of the tool changer body (2) close to the lifting plate (9), and the lifting plate (9) is slidably connected to a clearance groove opened inside the lifting seat (10).

3. The rotary tool changer for a CNC machine tool according to claim 2, characterized in that: A spring (11) is fixed between the lifting plate (9) and the lifting seat (10), and a lifting rod (12) is fixed in the middle of the surface of the lifting plate (9). A lifting lever adapted to the lifting rod (12) is provided inside the lifting seat (10), and a pull ring (13) is fixed at the top of the lifting rod (12).

4. The rotary tool changer for a CNC machine tool according to claim 1, characterized in that: A fixing assembly is installed between the knife body (6) and the knife changing disc (5), and the fixing assembly includes a knife seat (14) fixed on the surface of the knife body (6). A fixing seat (17) adapted to the knife seat (14) is fixed inside the knife changing disc (5). Two groups of symmetrically arranged fixing blocks (15) are hinged on one side of the knife seat (14). A compression spring (16) is abutted between the two groups of fixing blocks (15), and the compression spring (16) is fixed inside the knife seat (14) through a positioning shaft.

5. The rotary tool changer for a CNC machine tool according to claim 4, characterized in that: A fixing slot adapted to the fixing block (15) is provided inside the fixing seat (17). The fixing slot is divided into an inserting slot and a locking slot. The inserting slot is a trapezoidal structure, and the locking slot is a rectangular structure.

6. The rotary tool changer for a CNC machine tool according to claim 4, characterized in that: A bidirectional screw rod (18) is rotatably connected to the interior of the fixed seat (17), and a threaded plate (19) is symmetrically threaded on both sides of the surface of the bidirectional screw rod (18). One end of the bidirectional screw rod (18) passes through the interior of the fixed seat (17) and extends to the outside of the tool change disc (5), and is fixedly connected to a rotating hand wheel (20) arranged on the outside of the tool change disc (5).

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