Cutter claw overturning type headstock front tool magazine

Abstract

The utility model discloses a tool claw overturn type headstock preposed tool magazine, which comprises a driving assembly and a tool magazine, the driving assembly comprises a servo motor and a speed reducer, the servo motor is connected with the input end of the speed reducer, the output end of the speed reducer is connected with the center of the tool magazine, and the output end of the speed reducer is connected with the center of the tool magazine. The servo motor acts on the speed reducer to directly drive the tool magazine to rotate, a plurality of tool bin assemblies are arranged on the periphery of the tool magazine in a surrounding mode, and each tool bin assembly comprises a turnover tool claw assembly and a tool returning mechanism. According to the scheme, the tool magazine is of a direct-drive structure, positioning is accurate, the tool magazine is fixed and matched with a tool claw overturning structure, and damage to a machine tool spindle is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of numerical control machining, and in particular relates to a tool magazine with a front end of a main spindle box and a tool claw flip type. Background Art

[0002] Drilling and tapping machining centers are CNC machining centers that integrate cutting, drilling, and tapping, offering high efficiency and precision. Compared to traditional vertical machining centers, they are more compact and occupy less floor space. They are often used to process small and lightweight products and components such as aluminum alloys, steel, copper, and engineering plastics. They are suitable for large-scale processing of 3C industry parts, hardware, molds, auto parts, watches, communications, and graphite. Compared to the arm-type automatic tool changer used in traditional vertical machining centers, drilling and tapping machining centers often use a clamp-arm tool magazine to achieve higher efficiency, as shown in Chinese patent number 2016210291756, entitled "A detachable clamp-arm tool magazine training device for teaching purposes."

[0003] The clamp-arm tool magazine drives the spindle box downward through the machine tool feed system, causing the entire tool magazine to flip and reset, thereby realizing the interchange of tools between the tool magazine and both ends of the spindle. This tool changing method has the disadvantages of slow tool changing time, tool-to-tool time of more than 2 seconds, large impact on the spindle box, complex structure, and high failure rate. Utility Model Content

[0004] In order to solve the above problems, the utility model provides a tool magazine with a flip-type spindle box front tool magazine, including a drive assembly and a tool magazine, the drive assembly includes a servo motor and a reducer, the servo motor is connected to the input end of the reducer, and the output end of the reducer is connected to the center of the tool magazine, the servo motor acts on the reducer to directly drive the tool magazine to rotate, and a plurality of tool magazine assemblies are arranged around the outer periphery of the tool magazine, and the tool magazine assembly includes a flip-type tool claw assembly and a tool return mechanism.

[0005] Preferably, the flipping claw assembly includes a claw seat arranged on the edge of the tool magazine and a flipping claw hinged to the claw seat, the flipping claw is S-shaped, the bottom of the flipping claw is provided with a tool clamping groove, and the top of the flipping claw is provided with a rolling bearing.

[0006] Preferably, the knife return mechanism includes a groove arranged on the outer periphery of the tool magazine, a pressure cover is provided on the surface of the groove, a guide rod is provided inside the groove, a knife return seat is slidably provided on the guide rod, a compression spring is provided above the guide rod, and the compression spring is located between the upper inner side of the groove and the knife return seat, the front end of the knife return seat is arranged through the pressure cover, and the pressure cover is provided with a through groove for axial movement of the knife return seat, and a positioning groove and an arc track for guiding the flipping of the flipping claw are provided below the knife return seat.

[0007] Preferably, the tool magazine is a disc-shaped structure.

[0008] Preferably, the rotation range of the tool magazine is 0-360°.

[0009] The advantages of the utility model are:

[0010] 1. The tool magazine in this solution adopts a direct drive structure with precise positioning. The tool magazine is fixed and rotated with the tool claw turning assembly to reduce damage to the machine tool spindle.

[0011] 2. This solution uses a built-in telescopic knife return mechanism, which has a simple structure, is easy to process, has good protection effect, is easy to assemble and convenient for subsequent maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is the overall structure diagram of the utility model.

[0013] Figure 2 This is a side structural diagram of the utility model with a spindle head installed at the entire front end.

[0014] Figure 3 This is a three-dimensional structural diagram of the knife magazine assembly of the utility model.

[0015] Figure 4 This is a side structural diagram of the knife magazine assembly of the utility model.

[0016] Figure 5 This is the structural diagram of the return knife seat of the utility model.

[0017] Figure 6 This is a diagram of the initial tool changing state of the knife claw flip assembly of the utility model.

[0018] Figure 7 This is a structural diagram of the knife claw flip assembly of the utility model after flipping.

[0019] In the figure: 1 tool magazine, 2 servo motor, 3 reducer, 4 tool claw seat, 5 flip tool claw, 6 tool clamping groove, 7 rolling bearing, 8 pressure cover, 9 guide rod, 10 tool return seat, 11 compression spring, 12 through groove, 13 positioning groove, 14 arc track, 15 driller optical machine spindle head. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0021] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", "front end", "rear end", "two ends", "one end", "the other end", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as a limitation on the present invention.

[0022] In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be a communication between the two elements. At the same time, when an element is referred to as "fixed on" or "provided on" another element, it can be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intermediate element at the same time. When an element is referred to as being "fixedly connected to" another element, it can be a common fixed connection method such as welding, bolt connection, or gluing connection. In short, for ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. Example 1

[0023] like Figure 1-2 The figure shows a tool magazine with a flipping claw and a pre-spindle box. It includes a drive assembly and a tool magazine 1. The drive assembly includes a servo motor 2 and a reducer 3. The reducer 3 is a cycloidal reducer 3. The servo motor 2 is connected to the input of the reducer 3. The output shaft of the servo motor 2 and the output shaft of the cycloidal reducer 3 can be connected via a coupling or a flange. The output end of the reducer 3 is connected to the center of the tool magazine 1. The output end of the reducer 3 is also connected to the flange and connected to the center of the tool magazine 1 via the flange. Several tool magazine assemblies are arranged around the outer periphery of the tool magazine 1. The tool magazine assemblies include a flipping claw assembly and a tool return mechanism. The servo motor 2 acts on the reducer 3 to directly rotate the tool magazine 1. Compared to the traditional clamp-arm tool magazine 1, which relies on the machine tool feed system to drive the spindle box downward to rotate the entire tool magazine 1, this design greatly simplifies the tool changing process, reduces tool change time, and enables rapid tool selection. Furthermore, the combination of the servo motor 2 and the cycloidal reducer 3 provides a smoother driving force, reducing vibration and noise.

[0024] like Figure 2-5As shown, the tool magazine 1 is locked to the top bracket of the machine column through the reducer 3. The tool magazine 1 is fixed relative to the machine tool. The driller's optical machine spindle head 15 is located in the front area of ​​the tool magazine 1. The flip claw assembly includes a claw seat 4 located on the edge of the tool magazine 1 and a flip claw 5 hinged to the claw seat 4. The flip claw 5 has an S-shaped structure. The bottom of the flip claw 5 is provided with a tool clamping groove 6, and the tool is clamped in the tool clamping groove 6. Before the tool change operation, as shown in FIG. Figure 6 As shown, the flipping claw 5 is in a horizontal state, and the driller optical machine spindle head 15 changes the tool in the tool clamping groove 6 during the descending process. At the same time, the flipping claw 5 starts to flip, and after the tool change is completed, as shown in FIG. Figure 7 As shown, the flipping claw 5 completes the flipping, and the driller's optical machine spindle head 15 moves down for processing. The tool magazine 1 is fixedly mounted on the top bracket of the machine tool column, which reduces the error caused by movement and improves the accuracy and stability during tool change. This fixed design also helps to maintain the overall rigidity of the machine tool and extend the service life of the machine tool. The design of the flipping claw assembly makes the tool changing process simpler. Before changing the tool, the flipping claw 5 is in a horizontal state, which makes it easy for the driller's optical machine spindle head 15 to grab the tool. When changing the tool, the flipping claw 5 flips to achieve rapid replacement of the tool, thereby improving processing efficiency. Compared with the traditional machine tool feed system that drives the spindle box to move down to drive the entire tool magazine 1 to flip, the driller's optical machine spindle head 15 in this solution only needs to move in the vertical direction to complete the tool change, which greatly reduces the wear on the driller's optical machine spindle head 15.

[0025] The knife return mechanism includes a groove (not shown in the figure) provided on the outer periphery of the tool magazine 1, a pressure cover 8 is provided on the surface of the groove, a guide rod 9 is provided inside the groove, a knife return seat 10 is slidably provided on the guide rod 9, a compression spring 11 is provided above the guide rod 9, and the compression spring 11 is located between the inner upper part of the groove and the knife return seat 10, the front end of the knife return seat 10 is provided through the pressure cover 8, and the pressure cover 8 is provided with a through groove 12 for the axial movement of the knife return seat 10, combined with the Figure 5A positioning groove 13 and an arc-shaped track 14 are provided below the return tool holder 10 to guide the flipping of the flipping claw 5. A rolling bearing 7 is provided on the top of the flipping claw 5. In the initial state, the rolling bearing 7 on the top of the flipping claw 5 is fixed in the positioning groove 13 below the return tool holder 10. The flipping claw 5 is kept fixed by the thrust of the compression spring 11. When the driller's optical machine spindle head 15 moves down to complete the tool change, the flipping claw 5 flips, the compression spring 11 is compressed, and the arc-shaped track 14 plays a guiding role. Finally, when the tool magazine assembly moves away from the driller's optical machine spindle head 15, the compression spring 11 pushes the return tool holder 10 downward. The arc-shaped track 14 cooperates with the rolling bearing 7 on the top of the flipping claw 5 to restore the flipping claw 5 to a horizontal state. The return tool mechanism cleverly utilizes the groove space on the outer periphery of the tool magazine 1. Through the combination of the pressure cover 8, the guide rod 9 and the return tool holder 10, the flipping and resetting functions of the flipping claw 5 are realized without requiring additional space. The knife return mechanism also has the advantages of simple structure, easy processing, good protection effect, easy assembly and convenient subsequent maintenance.

[0026] When this solution is in use, the tool magazine 1 is locked to the top bracket of the machine tool column through the reducer 3 to ensure that the tool magazine 1 is fixed relative to the machine tool. The rolling bearing 7 on the top of the flipping claw 5 is fixed in the positioning groove 13 below the return tool seat 10. The flipping claw 5 is kept in a fixed horizontal state by the thrust of the compression spring 11. The driller's optical machine spindle head 15 is located in the front area of ​​the tool magazine 1. When it is necessary to change the tool, the spindle head descends into the tool clamping groove 6 of the flipping claw 5 and removes the required tool. As the spindle head removes the tool, the tool magazine 1 is fixed and cooperates with the flipping claw 5 to flip. The arc track 14 plays the role of guiding the flipping claw 5 to flip, ensuring a smooth and accurate flipping process. After the tool change is completed, the tool magazine assembly moves away from the driller's optical machine spindle head 15. The compression spring 11 pushes the return tool seat 10 downward. The arc track 14 cooperates with the rolling bearing 7 on the top of the flipping claw 5, so that the flipping claw 5 is reset to a horizontal state under the push of the return tool seat 10. At this time, the rolling bearing 7 on the top of the flipping knife claw 5 is fixed in the positioning groove 13 below the return knife seat 10 again.

[0027] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tool magazine with a flip-over headstock and a front-mounted tool magazine, characterized in that: The invention comprises a drive assembly and a tool magazine (1), wherein the drive assembly comprises a servo motor (2) and a reducer (3), wherein the servo motor (2) is connected to the input end of the reducer (3), and the output end of the reducer (3) is connected to the center of the tool magazine (1), and the servo motor (2) acts on the reducer (3) to directly drive the tool magazine (1) to rotate, and a plurality of tool magazine assemblies are arranged around the outer periphery of the tool magazine (1), and the tool magazine assembly comprises a flipping knife claw assembly and a knife return mechanism.

2. The claw flip type spindle box front tool magazine according to claim 1 is characterized in that: The flip knife claw assembly comprises a knife claw seat (4) arranged on the edge of the tool magazine (1) and a flip knife claw (5) hinged to the knife claw seat (4); the flip knife claw (5) is in an S-shaped structure; a tool clamping groove (6) is provided at the bottom of the flip knife claw (5); and a rolling bearing (7) is provided at the top of the flip knife claw (5).

3. The claw flip type spindle box front tool magazine according to claim 2 is characterized in that: The knife return mechanism includes a groove provided on the outer periphery of the tool magazine (1), a pressure cover (8) is provided on the surface of the groove, a guide rod (9) is provided inside the groove, a knife return seat (10) is slidably provided on the guide rod (9), a compression spring (11) is sleeved above the guide rod (9), the compression spring (11) is located between the inner side of the groove and the knife return seat (10), the front end of the knife return seat (10) is provided through the pressure cover (8), the pressure cover (8) is provided with a through groove (12) for axial movement of the knife return seat (10), and a positioning groove (13) and an arc track (14) for guiding the flipping of the flipping knife claw (5) are provided below the knife return seat (10).

4. The claw flip type spindle box front tool magazine according to claim 3 is characterized in that: The tool magazine (1) is a disc-shaped structure.

5. The claw flip type spindle box front tool magazine according to claim 4 is characterized in that: The rotation range of the tool magazine (1) is 0-360°.

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