Tool changing device of numerical control machining center

Abstract

The utility model discloses a numerical control machining center tool changing device which comprises a machine body, a fixing seat and a tool body, the top of the machine body is fixedly connected with a fixing frame, a tool changing component is arranged in the fixing seat, and a feeding component is arranged on the fixing frame. The tool changing component comprises an extending plate fixedly connected with the top of the tool body, a cavity formed in the fixing base, a two-way screw connected with the cavity and driving plates connected with the two sides of the two-way screw respectively. The problems that when an existing tool changing device is used, although a tool can be replaced, during replacement, a screw is screwed into a threaded sleeve to fix the tool, the tool is prone to rotating during working, then the tool is prone to being disengaged from the threaded sleeve, normal machining of a workpiece is affected, and therefore practicability is reduced are solved.

Description

Technical Field

[0001] This utility model relates to the field of CNC machining center technology, specifically to a tool changing device for CNC machining centers. Background Technology

[0002] A CNC machining center is a highly automated, multi-functional CNC machine tool that integrates various machining functions, such as milling, boring, drilling, tapping, and thread cutting, enabling it to complete multiple processes on a single machine. CNC machining centers rely heavily on cutting tools, a crucial component, and require frequent changes of tools for different purposes during operation.

[0003] Existing patent CN222493250U discloses an automatic tool changer for a CNC machining center, including a machine body and a cutting tool. This automatic tool changer for CNC machining centers, through the configuration of a first displacement component, a second displacement component, and a connecting component, utilizes the cooperation of a first electric push rod, a displacement plate, and a second electric push rod to move the cutting tool downwards and insert it into the slot of the tool holder. A rectangular block adapts to and limits the tool in a rectangular limiting groove. Then, through the cooperation of a second servo motor, a second gear, and a first gear, the threaded sleeve rotates and disengages from the threaded shaft. The second electric push rod then drives the connecting component upwards. The cooperation of the first servo motor, the threaded rod, and the threaded block causes the second electric push rod to move the connecting component to the left and downwards, bringing the threaded sleeve into contact with the threaded shaft on the new cutting tool. Finally, the second servo motor is activated to rotate in the opposite direction, completing the connection. This eliminates the need for manual tool changing, improving its practicality.

[0004] Based on the search of the aforementioned patents and in conjunction with existing tool changing devices, it was found that although the aforementioned tool changing device can replace the tool during use, it uses a screw to be screwed into a threaded sleeve to fix the tool during replacement. The tool is prone to rotation during operation, which can easily cause the tool to detach from the threaded sleeve, affecting the normal processing of the workpiece and thus reducing its practicality. Utility Model Content

[0005] The purpose of this utility model is to provide a tool changing device for CNC machining centers, so as to solve the problem mentioned in the background art that, although the existing tool changing devices can change tools, they use a screw to be screwed into a threaded sleeve to fix the tool. During operation, the tool is prone to rotation, which can easily cause the tool to fall off the threaded sleeve, affecting the normal machining of the workpiece and thus reducing its practicality.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a tool changing device for a CNC machining center, comprising a machine body, a fixed base, and a tool body, wherein a fixed frame is fixedly connected to the top of the machine body, a tool changing component is provided inside the fixed base, and a feeding component is provided on the fixed frame;

[0007] The tool changing component includes an extension plate fixedly connected to the top of the tool body, a cavity opened inside the fixed seat, a bidirectional screw connected to the cavity, a drive plate connected to both sides of the bidirectional screw, a fixed plate fixedly connected to the bottom of the drive plate, a motor fixedly connected to one end of the bidirectional screw, and auxiliary components for improving the working stability of the tool. The bidirectional screw is screwed to the drive plate, the bidirectional screw is rotatably connected to the fixed seat, and the extension plate is inserted into the fixed seat.

[0008] Preferably, the feeding component includes a support frame fixedly connected to the back of the fixed frame, a first cylinder fixedly connected to one side of the support frame, a feeding plate fixedly connected to the output end of the first cylinder, a plurality of tool holders evenly arranged on the top of the feeding plate, and a support component for improving the moving stability of the feeding plate, wherein the tool body is inserted into the tool holder.

[0009] Preferably, the auxiliary component includes fixing holes respectively opened on both sides of the extension plate and fixing rods fixedly connected to one side of the fixing plate, wherein the fixing rods are inserted into the fixing holes.

[0010] Preferably, the cavity has movable slots on both sides of the top, and a movable block is slidably connected in the movable slot, and the movable block is fixedly connected to the drive plate.

[0011] Preferably, the support component includes a support groove formed at the top of the support frame, a support block disposed in the support groove, and a vertical plate fixedly connected to the bottom of the support block. The bottom of the vertical plate is fixedly connected to the top of the feeding plate, and the support block is slidably connected to the support groove.

[0012] Preferably, a reinforcing rib is fixedly connected to the top of the support frame, and the reinforcing rib is fixedly connected to the back of the fixed frame. The reinforcing rib is triangular in shape.

[0013] Preferably, a second cylinder is installed on the top of the fixing frame, and the output end of the second cylinder is fixedly connected to the fixing seat.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. By setting up a machine body, a fixed base, a tool body, a fixed frame, and a tool changing component, the extension plate can be inserted into the fixed base. When the motor is started, it can control the rotation of the bidirectional screw, which in turn can move the two drive plates, which in turn can drive the fixed plates to move. The two fixed plates can clamp and fix the extension plate. At the same time, the fixing rod is inserted into the fixing port, which can quickly install the tool body and realize automatic tool changing operation. It can also prevent the tool body from falling off the fixed base during operation, which can improve the working stability of the tool body, and thus greatly improve the practicality and efficiency of the device.

[0016] 2. With the addition of a feeding component, the cutter body can be inserted into the cutter slot. The first cylinder can push the feeding plate to move back and forth, thereby moving the cutter body directly below the fixed seat. This facilitates the replacement of the cutter body and provides material for the cutter change operation, further improving the efficiency of the cutter change and thus enhancing its practicality and efficiency. Attached Figure Description

[0017] Figure 1 A three-dimensional structural schematic diagram provided for this utility model;

[0018] Figure 2 The left view provided for this utility model;

[0019] Figure 3 Provided by this utility model Figure 2 A three-dimensional cross-sectional view at point AA;

[0020] Figure 4 Provided by this utility model Figure 3 Enlarged view of point C in the middle;

[0021] Figure 5 Front view provided for this utility model;

[0022] Figure 6 Provided by this utility model Figure 5 3D cross-sectional view at point BB.

[0023] In the diagram: 1. Machine body; 11. Fixed base; 12. Tool body; 13. Fixed frame; 21. Extension plate; 22. Cavity; 23. Bidirectional screw; 24. Drive plate; 25. Fixed plate; 26. Motor; 31. Support frame; 32. First cylinder; 33. Feed plate; 34. Tool holder; 41. Fixed hole; 42. Fixed rod; 51. Moving groove; 52. Moving block; 61. Support groove; 62. Support block; 63. Vertical plate; 71. Reinforcing rib; 81. Second cylinder. Detailed Implementation

[0024] 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, those skilled in the art who have not made any innovative embodiments are all within the protection scope of the present utility model.

[0025] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 as well as Figure 6 This utility model provides a technical solution: a tool changing device for a CNC machining center, including a machine body 1, a fixed base 11, and a tool body 12. A fixed frame 13 is fixedly connected to the top of the machine body 1. A tool changing component is provided inside the fixed base 11, and a feeding component is provided on the fixed frame 13. The tool changing component includes an extension plate 21 fixedly connected to the top of the tool body 12, a cavity 22 opened inside the fixed base 11, a bidirectional screw 23 connected to the cavity 22, a drive plate 24 respectively connected to both sides of the bidirectional screw 23, and a component fixed to the bottom of the drive plate 24. The tool body 12 includes a fixed plate 25, a motor 26 fixedly connected to one end of a bidirectional screw 23, and auxiliary components for improving tool stability. The bidirectional screw 23 is screwed to a drive plate 24 and rotatably connected to a fixed base 11. An extension plate 21 is inserted into the fixed base 11. The extension plate 21 at the top of the tool body 12 can be inserted into the fixed base 11. When the motor 26 starts, it drives the bidirectional screw 23 to rotate, which in turn moves the two drive plates 24 towards the center, causing the fixed plate 25 to contact the extension plate 21. Clamping and fixing the extension plate 21 can improve the working stability of the tool and prevent the tool body 12 from detaching from the fixing seat 11. A second cylinder 81 is installed on the top of the fixing frame 13. The output end of the second cylinder 81 is fixedly connected to the fixing seat 11. The second cylinder 81 can drive the fixing seat 11 to move vertically, which facilitates the replacement of the tool body 12. The auxiliary components include fixing holes 41 respectively opened on both sides of the extension plate 21 and fixing rods 42 fixedly connected to one side of the fixing plate 25. The fixing rods 42 are inserted into the fixing holes 41. The fixing plate 25 The movement can drive the fixed rod 42 to move, and the fixed rod 42 can be inserted into the fixed hole 41, which can further improve the fixing stability of the tool body 12 and prevent the tool body 12 from shaking or even falling off during operation. The top two sides of the cavity 22 are respectively provided with moving grooves 51, and moving blocks 52 are slidably connected in the moving grooves 51. The moving blocks 52 are fixedly connected to the drive plate 24, and the drive plate 24 can drive the moving blocks 52 to move, thereby preventing the drive plate 24 from rotating and ensuring the drive plate 24 moves laterally stably.

[0026] Please see Figure 1 , Figure 5as well as Figure 6 The feeding component includes a support frame 31 fixedly connected to the back of the fixed frame 13, a first cylinder 32 fixedly connected to one side of the support frame 31, a feeding plate 33 fixedly connected to the output end of the first cylinder 32, a plurality of tool slots 34 evenly arranged on the top of the feeding plate 33, and a support component for improving the moving stability of the feeding plate 33. The tool body 12 is inserted into the tool slot 34. The first cylinder 32 can push the feeding plate 33 to move, which in turn can drive the tool body 12 to move, allowing the tool body 12 to move below the fixed seat 11, which can provide material for tool changing without manual feeding, and can further improve tool changing efficiency. The support component includes components opened on the support frame. The support plate 31 has a support groove 61 at the top, a support block 62 located in the support groove 61, and a vertical plate 63 fixedly connected to the bottom of the support block 62. The bottom of the vertical plate 63 is fixedly connected to the top of the feeding plate 33. The support block 62 is slidably connected to the support groove 61. The movement of the feeding plate 33 can drive the vertical plate 63 and the support block 62 to move. The vertical plate 63 and the support block 62 can improve the stability of the feeding plate 33's forward and backward movement and prevent the feeding plate 33 from tilting and causing damage to the first cylinder 32. The top of the support frame 31 is fixedly connected to a reinforcing rib 71, which is fixedly connected to the back of the fixed frame 13. The reinforcing rib 71 is triangular in shape. The reinforcing rib 71 can improve the connection strength between the support frame 31 and the fixed frame 13 and prevent the support frame 31 from tilting.

[0027] Working principle: During operation, the first cylinder 32 is activated, which pushes the feed plate 33 to move. The movement of the feed plate 33 moves the cutter body 12, placing it below the fixed seat 11. The second cylinder 81 is then activated, pushing the fixed seat 11 downwards, allowing the extension plate 21 at the top of the cutter body 12 to insert into the fixed seat 11. At this time, the motor 26 is activated, driving the bidirectional screw 23 to rotate. The rotation of the bidirectional screw 23 moves the two drive plates 24 towards the center, which in turn moves the fixed plate 25. The two fixed plates 25 then contact the extension plate 21, clamping and fixing it. Simultaneously, the fixing rod 42 can be inserted into the fixing hole 41, further improving the stability of the cutter body 12. Then the second cylinder 81... The second cylinder 81 resets, causing the fixed base 11 and the tool body 12 to move upward. At this time, the first cylinder 32 starts, causing the feed plate 33 to reset, completing the installation operation of the tool body 12. When the tool needs to be replaced later, the first cylinder 32 can be started again to push the feed plate 33 to move below the fixed base 11. The second cylinder 81 starts to push the tool body 12 into the tool holder 34. The motor 26 reverses, causing the fixed plate 25 to move away from the extension plate 21. Then the second cylinder 81 drives the fixed base 11 to move upward, and the first cylinder 32 pushes the feed plate 33 to move, so that the other tool bodies 12 move below the fixed base 11. Then the tool body 12 can be installed. The above is the working process of the whole device. All contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0028] 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 body (1), a fixed seat (11) and a tool body (12), characterized in that: The top of the machine body (1) is fixedly connected to a fixed frame (13), the fixed base (11) is provided with a tool changing component, and the fixed frame (13) is provided with a feeding component; The tool changing component includes an extension plate (21) fixedly connected to the top of the tool body (12), a cavity (22) opened inside the fixed seat (11), a bidirectional screw (23) connected to the cavity (22), a drive plate (24) respectively connected to both sides of the bidirectional screw (23), a fixed plate (25) fixedly connected to the bottom of the drive plate (24), a motor (26) fixedly connected to one end of the bidirectional screw (23), and auxiliary components for improving the working stability of the tool. The bidirectional screw (23) is screwed to the drive plate (24), the bidirectional screw (23) is rotatably connected to the fixed seat (11), and the extension plate (21) is inserted into the fixed seat (11).

2. The tool changer of claim 1, wherein: The feeding component includes a support frame (31) fixedly connected to the back of the fixed frame (13), a first cylinder (32) fixedly connected to one side of the support frame (31), a feeding plate (33) fixedly connected to the output end of the first cylinder (32), a plurality of tool holders (34) evenly arranged on the top of the feeding plate (33), and a support component for improving the moving stability of the feeding plate (33). The tool body (12) is inserted into the tool holders (34).

3. The tool changer of claim 1, wherein: The auxiliary component includes fixing holes (41) respectively opened on both sides of the extension plate (21) and fixing rods (42) fixedly connected to one side of the fixing plate (25), wherein the fixing rods (42) are inserted into the fixing holes (41).

4. The tool changer of claim 1, wherein: The cavity (22) has movable slots (51) on both sides of the top. A movable block (52) is slidably connected in the movable slot (51). The movable block (52) is fixedly connected to the drive plate (24).

5. The tool changer of claim 2, wherein: The support component includes a support groove (61) opened at the top of the support frame (31), a support block (62) disposed in the support groove (61), and a vertical plate (63) fixedly connected to the bottom of the support block (62). The bottom of the vertical plate (63) is fixedly connected to the top of the feeding plate (33), and the support block (62) is slidably connected to the support groove (61).

6. The tool changer of claim 2, wherein: The top of the support frame (31) is fixedly connected to a reinforcing rib (71), which is fixedly connected to the back of the fixing frame (13). The reinforcing rib (71) is triangular in shape.

7. The tool changer of claim 1, wherein: The top of the fixed frame (13) is equipped with a second cylinder (81), and the output end of the second cylinder (81) is fixedly connected to the fixed seat (11).

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