Automatic tool changing device for numerical control machine tool spindle

Abstract

The utility model discloses an automatic tool changing device for a numerical control machine tool spindle, which comprises a tool changing mechanism, a driving mechanism and a mounting and changing mechanism, the tool changing mechanism comprises a mounting rack, a sliding plate connected with the mounting rack in a sliding manner, a tool magazine mounted at the top of the sliding plate in a sliding manner, and the driving mechanism, the driving mechanism comprises a motor fixedly connected with the top of the sliding plate, a gear connected to the outer side of an output shaft of the motor in a sleeving mode and a plurality of gear blocks connected with the bottom of the tool magazine, and the gear is meshed with the tool magazine through the gear blocks. When a damaged tool in the tool magazine is replaced, the movable end of the multi-section electric push rod is controlled to contract, then the sliding plate drives the tool magazine and the plate body to slide downwards, the tool magazine is far away from a machine tool spindle, and after the plate body is in contact with the touch switch, the electric vertical hinged door is opened, so that a worker can quickly replace the damaged tool.

Description

Technical Field

[0001] The utility model relates to the technical field of tool changing for a CNC machine tool spindle, in particular to an automatic tool changing device for a CNC machine tool spindle. Background Art

[0002] A CNC machine tool is a digitally controlled machine tool, an automated machine tool equipped with a program control system. This control system logically processes programs specified by control codes or other symbolic instructions, decodes them, and transmits them to the CNC device via an information carrier. After processing, the CNC device issues various control signals, controlling the machine's movements and automatically producing parts according to the shapes and dimensions specified in the drawings.

[0003] Application number CN202020280819.9 discloses a pneumatic tool magazine used in an automatic tool changing device, which has structures such as a tool chamber, a tool arm and a shell. The utility model has a stable and effective structure with a low failure rate. It can replace the traditional hydraulic tool magazine. The tool magazine is responsive, has a long service life, and the tool magazine parts are highly standardized. Since air pressure is used as the power source, it is energy-saving, environmentally friendly and easy to maintain. However, there is a problem in specific use. After long-term use, the tools in the tool magazine will be damaged to varying degrees. Therefore, the tools in the tool magazine need to be replaced regularly. However, because the tool magazine is relatively close to the spindle of the CNC machine tool, it is difficult for the staff to operate. Utility Model Content

[0004] The utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0005] To this end, the technical solution adopted in this utility model is:

[0006] The automatic tool changing device for a CNC machine tool spindle comprises a tool changing mechanism, a driving mechanism and a changing mechanism, wherein the tool changing mechanism comprises a mounting frame, a slide slidably connected to the mounting frame, a tool magazine slidably mounted on the top of the slide, a driving mechanism, the driving mechanism comprises a motor fixed to the top of the slide, a gear sleeved on the outside of the motor output shaft, a plurality of tooth blocks connected to the bottom of the tool magazine, the gear meshing with the tool magazine through a plurality of tooth blocks, a changing mechanism, the changing mechanism comprises a multi-section electric push rod running through one end of the mounting frame, a plurality of electric swing doors connected to the tool magazine, a plate body connected to the tool magazine, a light touch switch connected to the top of the mounting frame, the movable end of the multi-section electric push rod is wired to the slide, and the light touch switch is electrically connected to an electric swing door.

[0007] By adopting the above technical solution, when replacing a damaged tool in the tool magazine, the movable end of the multi-section electric push rod is controlled to retract, and then the slide slides down with the tool magazine and the plate body, and the tool magazine is away from the machine tool spindle. After the plate body contacts the touch switch, the electric swing door opens, and the staff can quickly replace the damaged tool.

[0008] In a preferred example, the present invention can be further configured as follows: a plurality of tooth blocks are arranged in a row at equal intervals, with one row of tooth blocks being located at the top of the gear.

[0009] In a preferred example, the present invention can be further configured as follows: multiple electric swing doors are connected in series, and the multiple electric swing doors are arranged in a row with equal spacing.

[0010] In a preferred example, the present invention can be further configured as follows: the plate body and the tool magazine are formed integrally, and the plate body is configured to be rectangular.

[0011] In a preferred example, the present invention can be further configured as follows: a connecting frame is installed at the bottom of the mounting frame, the connecting frame is arranged in a U shape, and the bottom is arranged horizontally.

[0012] By adopting the above technical solution, the beneficial effects achieved by the utility model are as follows:

[0013] 1. In the utility model, when replacing a damaged tool in the tool magazine, the movable end of the multi-section electric push rod is controlled to retract, and then the slide slides down with the tool magazine and the plate body, and the tool magazine is away from the machine tool spindle. Then, after the plate body contacts the touch switch, the electric swing door opens, and the staff can quickly replace the damaged tool.

[0014] 2. In the present invention, when performing a tool change operation, the multi-section electric push rod is started, and then the slide brings the tool magazine toward the machine tool spindle. Here, the motor output shaft rotates with the gear, and then the tool magazine moves horizontally to the left / right under the influence of the gear block, so that the tool to be replaced is located at the bottom of the machine tool spindle, making it convenient to replace the spindle tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a three-dimensional diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the tool changing mechanism of the utility model;

[0017] Figure 3 This is a schematic diagram of the disassembly of the tool changing mechanism of the utility model;

[0018] Figure 4 This is a schematic diagram of the installation position of the drive mechanism of the utility model;

[0019] Figure 5 For this utility model Figure 4A magnified view of the structure of part A;

[0020] Figure 6 It is a schematic diagram of the replacement mechanism of the utility model.

[0021] Reference numerals:

[0022] 100, tool changing mechanism; 110, mounting frame; 120, slide plate; 130, tool magazine;

[0023] 200, driving mechanism; 210, motor; 220, gear; 230, gear block;

[0024] 300, replacement mechanism; 310, multi-section electric push rod; 320, electric swing door; 330, plate; 340, touch switch;

[0025] 400. Connecting frame. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the present invention more clear, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be noted that the embodiments of the present invention and the features therein can be combined with each other unless there is any conflict.

[0027] It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention.

[0028] An automatic tool changing device for a spindle of a CNC machine tool provided by some embodiments of the present invention will be described below with reference to the accompanying drawings.

[0029] Example 1:

[0030] Combine Figure 1-4 As shown, the present invention provides an automatic tool changing device for a CNC machine tool spindle, comprising a tool changing mechanism 100, a driving mechanism 200 and a changing mechanism 300. The tool changing mechanism 100 comprises a mounting frame 110, a slide 120 slidably connected to the mounting frame 110, and a tool magazine 130 slidably mounted on the top of the slide 120.

[0031] The drive mechanism 200 includes a motor 210 fixed to the top of the slide 120, a gear 220 sleeved on the outside of the output shaft of the motor 210, and a plurality of gear blocks 230 connected to the bottom of the tool magazine 130. The gear 220 is meshed with the tool magazine 130 through the plurality of gear blocks 230;

[0032] The changing mechanism 300 includes a multi-section electric push rod 310 passing through one end of the mounting frame 110, a plurality of electric swing doors 320 connected to the tool magazine 130, a plate 330 connected to the tool magazine 130, and a touch switch 340 connected to the top of the mounting frame 110. The movable end of the multi-section electric push rod 310 is connected to the slide plate 120 by wire, and the touch switch 340 is electrically connected to an electric swing door 320.

[0033] Furthermore, the plurality of gear blocks 230 are arranged in a row at equal intervals, and the row of gear blocks 230 is located on top of the gear 220 .

[0034] Furthermore, the plurality of electric swing doors 320 are connected in series, and the plurality of electric swing doors 320 are arranged in a row with equal spacing.

[0035] Example 2:

[0036] Combine Figure 2-3 As shown, based on the first embodiment, the plate body 330 and the tool magazine 130 are integrally formed, and the plate body 330 is set to be rectangular.

[0037] Example 3:

[0038] Combine Figure 3-4 As shown, in the above embodiment, a connecting frame 400 is installed at the bottom of the mounting frame 110. The connecting frame 400 is arranged in a U shape, and the bottom is arranged horizontally.

[0039] The working principle and usage process of the present invention are as follows: when the device is put into actual use, the mounting frame 110 is fixed to the CNC machine tool through the connecting frame 400, and then when performing the tool changing operation, the multi-section electric push rod 310 is started, and then the slide 120 brings the tool magazine 130 toward the machine tool spindle, here, the output shaft of the motor 210 drives the gear 220 to rotate, and then the tool magazine 130 is translated to the left / right under the influence of the gear block 230, so that the tool to be replaced is located at the bottom of the machine tool spindle, which is convenient for the spindle to replace the tool, and then when replacing the damaged tool in the tool magazine 130, the movable end of the multi-section electric push rod 310 is controlled to retract, and then the slide 120 brings the tool magazine 130 and the plate body 330 down, and the tool magazine 130 is away from the machine tool spindle, and then after the plate body 330 contacts the touch switch 340, the electric swing door 320 opens, and the staff can quickly replace the damaged tool.

[0040] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An automatic tool changing device for a CNC machine tool spindle, characterized in that: include: A tool changing mechanism (100), comprising a mounting frame (110), a slide plate (120) slidably connected to the mounting frame (110), and a tool magazine (130) slidably mounted on top of the slide plate (120); A driving mechanism (200), the driving mechanism (200) comprising a motor (210) fixedly connected to the top of the slide (120), a gear (220) sleeved on the outside of the output shaft of the motor (210), and a plurality of tooth blocks (230) connected to the bottom of the tool magazine (130), wherein the gear (220) is meshed with the tool magazine (130) via the plurality of tooth blocks (230); A switching mechanism (300) includes a multi-section electric push rod (310) running through one end of the mounting frame (110), a plurality of electric swing doors (320) connected to the tool magazine (130), a plate (330) connected to the tool magazine (130), and a touch switch (340) connected to the top of the mounting frame (110), wherein the movable end of the multi-section electric push rod (310) is connected to the slide plate (120) by wire, and the touch switch (340) is electrically connected to an electric swing door (320).

2. The automatic tool changing device for a CNC machine tool spindle according to claim 1, characterized in that: The plurality of tooth blocks (230) are arranged in a row at equal intervals, and the row of tooth blocks (230) is located on the top of the gear (220).

3. The automatic tool changing device for a CNC machine tool spindle according to claim 1, characterized in that: The plurality of electric swing doors (320) are connected in series, and the plurality of electric swing doors (320) are arranged in a row at equal intervals.

4. The automatic tool changing device for a CNC machine tool spindle according to claim 1, characterized in that: The plate body (330) and the tool magazine (130) are integrally formed, and the plate body (330) is configured in a rectangular shape.

5. The automatic tool changing device for a CNC machine tool spindle according to claim 1, characterized in that: A connecting frame (400) is installed at the bottom of the mounting frame (110); the connecting frame (400) is arranged in a U shape, and the bottom is arranged horizontally.

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