Automatic tool changing device of numerical control machining center

Abstract

The utility model discloses an automatic tool changing device of a numerical control machining center in the technical field of numerical control machining centers, which comprises a mounting frame and a tool changing assembly, the mounting frame is mounted on the machining center through an overturning assembly, the mounting frame comprises two longitudinal beams connected through a plurality of cross beams, and the tool changing assembly comprises a U-shaped moving frame. A plurality of clamping assemblies used for containing tools are installed on the movable frame, and a lifting assembly used for adjusting the heights of the tools is installed at the bottom of the movable frame. And part of components can be damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of numerical control machining centers, in particular to an automatic tool changing device for numerical control machining centers. Background Art

[0002] CNC machining center is a high-efficiency automated machine tool composed of mechanical equipment and CNC system suitable for machining complex parts. CNC machining center is one of the most productive and widely used CNC machine tools in the world. It has strong comprehensive processing capabilities, and can complete more processing content after the workpiece is clamped once, with high processing accuracy. For batch workpieces with medium processing difficulty, its efficiency is 5 to 10 times that of ordinary equipment. In particular, it can complete many processing that ordinary equipment cannot complete, and is more suitable for single-piece processing with complex shapes and high precision requirements or small and medium-sized batch multi-variety production. It concentrates milling, boring, drilling, tapping and cutting thread functions on one device, so that it has a variety of processing procedures and process means.

[0003] The same machining center can perform a variety of different machining processes. Different machining processes require the use of different tools. When replacing, it is not only necessary to remove the original tool from the tool holder, but also to install the new tool on the tool holder. The existing CNC machining centers use manual tool replacement, which is time-consuming and has certain safety hazards. Some machining centers are equipped with tool magazine systems, but they are large in size and will occupy many processing positions. When moving under the tool holder, it is easy to collide with other structures, causing damage to some components.

[0004] The existing machining center has the above problems. Therefore, those skilled in the art provide an automatic tool changing device for a CNC machining center to solve the problems raised in the above background technology. Utility Model Content

[0005] The purpose of the utility model is to provide an automatic tool changing device for a numerical control machining center to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an automatic tool changing device for a CNC machining center, comprising a mounting frame installed on the machining center through a flip assembly and a tool changing assembly, the mounting frame comprising two longitudinal beams connected by a plurality of cross beams, the tool changing assembly comprising a U-shaped moving frame, a plurality of clamping assemblies for placing tools are installed on the moving frame, and a lifting assembly for adjusting the height of the tool is installed at the bottom of the moving frame.

[0007] Preferably: the clamping assembly includes a positioning block and two symmetrically arranged clamping plates, the clamping plates are semicircular, the bottom of the clamping plates are connected to a support plate, the top of the positioning block is open, and the outer sides of the two support plates are installed with adjustment components for controlling the opening and closing of the two clamping plates.

[0008] Preferably: the adjustment assembly includes a ring located on the outside of the two support plates, a cylinder is installed on one side of the positioning block, a spring for separating the two clamping plates is provided between the positioning block and the support plate, and when the ring is located in the upper middle part of the support plate, the two clamping plates are connected to form a circular ring.

[0009] Preferably, a roller is installed on the side of the collar facing the support plate, and a limiting groove matching with the roller is provided on the support plate.

[0010] Preferably: the flip assembly includes a fixed seat installed on the machining center, the fixed seat is provided with a slide groove, the slide groove is provided with a slide seat, one end of the mounting frame is connected to the slide seat, and a limiting member for fixing the mounting frame is installed on one side of the fixed seat.

[0011] Preferably, the limiting member comprises a U-shaped groove installed on the sliding seat for the longitudinal beam to pass through, and the sliding seat is provided with a plug plate capable of entering the U-shaped groove and clamping the longitudinal beam.

[0012] Preferably, the lifting assembly comprises a plurality of telescopic rods connected to the bottom of the positioning block, and the positioning block is slidably connected to the movable frame.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. In the utility model, a slidable and flippable mounting frame is provided, and a plurality of cutting tools are mounted on the mounting frame through a movable frame. The mounting frame slides back and forth on a fixed seat through a slide seat, so that the mounting frame can pass over other structures on the machining center, avoiding obstruction of structures such as a tool holder and being unable to fall smoothly, facilitating the dislocation of the mounting frame and facilitating tool change in the machining center.

[0015] 2. In the utility model, a movable rack that can slide on the mounting rack is provided. The sliding of the movable rack can adjust the left and right position of the tool, which can facilitate the alignment between the clamping plate and the tool holder on the machining center. Multiple tools are arranged in a straight line on the movable rack, and different tools are placed on different clamping plates, which is convenient for replacing different tools. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The overall structure of the utility model is shown in FIG. Figure 1 ;

[0017] Figure 2 It is a left view of the utility model;

[0018] Figure 3 For this utility model Figure 2 Schematic diagram of the three-dimensional cross section at AA in the middle;

[0019] Figure 4 For this utility model Figure 3 The enlarged view of point A in the middle;

[0020] Figure 5 For this utility model Figure 2 Schematic diagram of the three-dimensional section at the middle BB;

[0021] Figure 6 For this utility model Figure 3 The enlarged view of point B in the middle;

[0022] Figure 7 The overall structure of the utility model is shown in FIG. Figure 2 .

[0023] In the figure: 1, cross beam; 2, longitudinal beam; 3, mobile frame; 4, clamping plate; 5, support plate; 6, collar; 7, cylinder; 8, spring; 9, roller; 10, limit groove; 11, fixed seat; 12, slide groove; 13, slide seat; 14, U-shaped groove; 15, plug plate; 16, telescopic rod; 17, support leg; 18, positioning block. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1 to Figure 7 In an embodiment of the utility model, an automatic tool changing device for a CNC machining center includes a mounting frame and a tool changing assembly installed on the machining center through a flip assembly, the mounting frame includes two longitudinal beams 2 connected by multiple cross beams 1, the tool changing assembly includes a U-shaped moving frame 3, a plurality of clamping assemblies for placing tools are installed on the moving frame 3, a lifting assembly for adjusting the height of the tool is installed at the bottom of the moving frame 3, the lifting assembly includes a plurality of telescopic rods 16 connected to the bottom of the positioning block 18, and the positioning block 18 is slidably connected to the moving frame 3.

[0026] Multiple tools are installed on the mobile frame 3, and the mobile frame 3 can move on the mounting frame. Multiple clamping components are installed on the mobile frame 3. The lifting component can adjust the height of the tool. Multiple telescopic rods 16 can adjust the height of the tool respectively, which can facilitate the replacement and removal of the tool. The mounting frame is connected by a flipping component. When not in use, the mounting frame and the tool thereon can be flipped to one side of the machining center to reduce the occupied space.

[0027] In one embodiment, specifically, the clamping assembly includes a positioning block 18 and two symmetrically arranged clamping plates 4, the clamping plate 4 is a semicircular ring, the bottom of the clamping plate 4 is connected to a support plate 5, the top of the positioning block 18 is open, and the outer sides of the two support plates 5 are installed with adjustment components for controlling the opening and closing of the two clamping plates 4, the two clamping plates 4 are hinged together through the bottom support plate 5, and the two clamping plates 4 can be connected to form a circular tool placement space, which can facilitate tool changing in the machining center.

[0028] Among them, the adjusting component includes a ring 6 located on the outside of the two support plates 5, a cylinder 7 is installed on one side of the positioning block 18, a spring 8 for separating the two clamping plates 4 is provided between the positioning block 18 and the support plate 5, when the ring 6 is located in the middle and upper part of the support plate 5, the two clamping plates 4 are connected to form a circular ring, a roller 9 is installed on the side of the ring 6 facing the support plate 5, a limiting groove 10 matched with the roller 9 is provided on the support plate 5, the ring 6 is sleeved on the outside of the two support plates 5, and the ring 6 is raised to make the two support plates 5 approach each other, and the spring 8 can separate the two support plates 5, the cylinder 7 can be purchased directly from the market, and the tool can be fixed by adjusting the height of the ring 6 by the cylinder 7.

[0029] On the basis of the above embodiments, specifically, the flipping assembly includes a fixed seat 11 installed on the machining center, a slide groove 12 is provided on the fixed seat 11, a slide seat 13 is provided on the slide groove 12, one end of the mounting frame is connected to the slide seat 13, and a limiting member for fixing the mounting frame is installed on one side of the fixed seat 11, and the limiting member includes a U-shaped groove 14 installed on the slide seat 13 for the longitudinal beam 2 to pass through, and a plug plate 15 capable of entering the U-shaped groove 14 and clamping the longitudinal beam 2 is installed on the slide seat 13. The fixed seat 11 is fixedly installed on the machining center, and one end of the mounting frame is hinged on the slide seat 13. The slide seat 13 can slide on the slide groove 12, which can facilitate the adjustment of the front and rear position of the tool to avoid hitting other components on the machining center during flipping, and the longitudinal beam 2 can fall into the U-shaped groove 14, and the plug plate 15 can resist the longitudinal beam 2, which is convenient for fixing the mounting frame.

[0030] When changing the tool in the machining center, first slide the slide 13 to bypass the tool holder on the machining center, then rotate the mounting frame to rotate the longitudinal beam 2 into the U-shaped groove 14, and press the longitudinal beam 2 from above through the insert plate 15, move the slide 13 and the moving frame 3 so that the positioning block 18 of one of the two internal clamping blocks on the moving frame 3 is separated to face the tool holder, and the telescopic rod 16 under the positioning block 18 is extended, and then the tool on the tool holder falls between the two clamping plates 4 on the positioning block 18. After the unloaded tool is fixed, the moving frame 3 is moved forward again to move the positioning block 18 with the target tool to be replaced to the bottom of the tool holder, so that the telescopic rod 16 under the positioning block 18 is extended until the target tool to be replaced is sent to the tool holder. When the tool holder fixes the tool, the cylinder 7 contracts to move the collar 6 downward. At this time, the two support plates 5 are separated under the action of the spring 8, and the separated clamping seat loses its fixing effect on the tool, shortens the telescopic rod 16, and then the positioning block 18 falls.

[0031] In one embodiment, specifically, a support leg 17 that can be retracted into the longitudinal beam 2 is installed at the other end of the mounting frame to facilitate supporting the mounting frame.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An automatic tool changing device for a CNC machining center, characterized in that: It comprises a mounting frame mounted on a machining center via a flip assembly and a tool changing assembly, the mounting frame comprising two longitudinal beams (2) connected via a plurality of transverse beams (1), and the tool changing assembly comprising a U-shaped moving frame (3); A plurality of clamping components for placing cutting tools are installed on the movable frame (3), and a lifting component for adjusting the height of the cutting tools is installed at the bottom of the movable frame (3).

2. The automatic tool changing device for a CNC machining center according to claim 1, characterized in that: The clamping assembly comprises a positioning block (18) and two symmetrically arranged clamping plates (4); the clamping plate (4) is semicircular in shape; the bottom of the clamping plate (4) is connected to a support plate (5); the top of the positioning block (18) is open; and the outer sides of the two support plates (5) are provided with adjustment assemblies for controlling the opening and closing of the two clamping plates (4).

3. The automatic tool changing device for a CNC machining center according to claim 2, characterized in that: The adjustment assembly comprises a collar (6) located outside the two support plates (5); a cylinder (7) is installed on one side of the positioning block (18); a spring (8) for separating the two clamping plates (4) is provided between the positioning block (18) and the support plate (5); when the collar (6) is located in the middle and upper part of the support plate (5), the two clamping plates (4) are butt-jointed to form a circular ring.

4. The automatic tool changing device for a CNC machining center according to claim 3, characterized in that: A roller (9) is installed on the side of the collar (6) facing the support plate (5), and a limiting groove (10) matching with the roller (9) is provided on the support plate (5).

5. The automatic tool changing device for a CNC machining center according to claim 4, characterized in that: The flip assembly comprises a fixed seat (11) mounted on a machining center, a slide groove (12) being provided on the fixed seat (11), a slide seat (13) being provided on the slide groove (12), one end of the mounting frame being connected to the slide seat (13), and a limiting member for fixing the mounting frame being installed on one side of the fixed seat (11).

6. The automatic tool changing device for a CNC machining center according to claim 5, characterized in that: The position-limiting member comprises a U-shaped groove (14) mounted on a slide seat (13) for the longitudinal beam (2) to pass through, and a plug plate (15) capable of entering the U-shaped groove (14) and clamping the longitudinal beam (2) is mounted on the slide seat (13).

7. The automatic tool changing device for a CNC machining center according to claim 6, characterized in that: The lifting assembly comprises a plurality of telescopic rods (16) connected to the bottom of a positioning block (18), and the positioning block (18) is slidably connected to the moving frame (3).

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