High-precision ATC automatic tool changing mechanism

Abstract

The utility model discloses a high-precision ATC automatic tool changing mechanism which comprises a tool magazine assembly and a driving assembly which are vertically installed on a machine tool, the bottom of the driving assembly is connected with a tool changing arm, the tool magazine assembly comprises a tool magazine back plate close to the driving assembly, and a protruding sleeve is arranged on the side, away from the driving assembly, of the center of the tool magazine back plate. A rotating disc is installed on the sleeve, a mounting plate is fixed to the other end of the sleeve, a tool magazine driving motor and a tool changing air cylinder are arranged on the mounting plate, tool clamping mechanisms distributed annularly are arranged on the peripheral face of the rotating disc, and a tool changing groove is formed under the tool magazine back plate. The actions of taking down and replacing tools are completed below the tool magazine through the bidirectional tool changing arm structure, the tool changing efficiency is improved, the motor drives the rotating disc through the pressing wheel, the transmission precision is high, and the failure rate in the tool changing process is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of machining center equipment, in particular to a high-precision ATC automatic tool changing mechanism. Background Art

[0002] The automatic tool changing system, referred to as ATC, is an important component of the machining center. It realizes the tool changing requirements of continuous processing between parts processes, that is, after each process is completed, the new tool used in the next process is automatically replaced on the spindle, thereby ensuring the process concentration characteristics of the machining center. The tool replacement is generally completed through the coordinated actions of the manipulator, tool magazine and machine tool spindle.

[0003] When changing tools with a traditional tool changing mechanism, the robot selects the required tool from the tool magazine, grabs the tool, and then transports it to the spindle tool changing position. The robot then removes the tool to be replaced and replaces it with the required tool. After the tool change is completed, the robot puts the replaced tool back into the tool magazine. The robot needs to complete the removal of the tool to be replaced and the installation of the replacement tool in steps. The entire tool changing process is cumbersome, the tool changing time is long, and the failure rate is high, which affects the actual work efficiency. Utility Model Content

[0004] In order to solve the above-mentioned technical problems, a high-precision ATC automatic tool changing mechanism is provided.

[0005] To achieve the above-mentioned purpose, the utility model discloses a high-precision ATC automatic tool changing mechanism, including a tool magazine assembly and a drive assembly vertically installed on a machine tool, a tool changing arm being connected to the bottom of the drive assembly, the tool magazine assembly including a tool magazine back plate close to the drive assembly, a raised sleeve being arranged on the side of the center of the tool magazine back plate away from the drive assembly, a turntable being installed on the sleeve, a mounting plate being fixed to the other end of the sleeve, a tool magazine drive motor and a tool changing cylinder being arranged on the mounting plate, a tool clamping mechanism being distributed in an annular manner on the outer peripheral surface of the turntable, and a tool changing groove being arranged directly below the tool magazine back plate.

[0006] Furthermore, the turntable is provided with a first slot located in the center and a second slot located at the edge, the first slot corresponds to the output end position of the tool magazine drive motor, and the tool clamping mechanism is installed in the second slot.

[0007] Furthermore, third slots connected end to end are arranged on the edge of the turntable interval between the second slots, and rotating shafts are installed in the third slots in sequence.

[0008] Furthermore, the output end of the tool magazine drive motor is connected to a drive member, which includes a connecting rod with a circular plate fixedly connected to the tool magazine drive motor, and two sets of movable pressure wheels are installed on the side of the circular plate away from the tool magazine drive motor, and the movable pressure wheels abut against the inner wall of the first slot.

[0009] Furthermore, the tool clamping mechanism includes a steering member passing through the rotating shaft and arranged in the second slot, a tool fixing seat is arranged on the side of the steering member away from the first slot, and the output end of the tool changing cylinder abuts against the steering member through a pressure plate.

[0010] Furthermore, the tool changing groove penetrates along the thickness direction of the tool magazine back plate, and the width of the tool changing groove is greater than the diameter of the tool fixing seat.

[0011] Furthermore, at least three support columns are fixed on the mounting plate, and a cover shell is connected to the top of the support columns.

[0012] Compared with the prior art, the utility model has the following beneficial effects: the utility model discloses a high-precision ATC automatic tool changing mechanism, which completes the action of removing and replacing tools under the tool magazine through a bidirectional tool changing arm structure, thereby improving the tool changing efficiency; the motor drives the turntable through the pressure wheel, with high transmission accuracy, thereby reducing the failure rate of the tool changing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0014] Figure 1 This is a structural diagram of the first embodiment of the present utility model.

[0015] Figure 2 This is a structural diagram of the second embodiment of the utility model without the cover.

[0016] Figure 3 For this utility model Figure 2 Another angle of the structure.

[0017] Figure 4 This is a structural diagram of a turntable of the present utility model.

[0018] Figure 5 This is a structural diagram of the driving component of the utility model.

[0019] Figure 6 This is a schematic diagram of the tool clamping mechanism of the utility model.

[0020] In the figure: 1 is a tool magazine assembly; 11 is a tool magazine back plate; 111 is a tool change slot; 12 is a turntable; 121 is a first slot; 122 is a second slot; 123 is a third slot; 13 is a mounting plate; 14 is a tool magazine drive motor; 15 is a tool change cylinder; 16 is a tool clamping mechanism; 161 is a steering member; 162 is a rotating shaft; 163 is a tool fixing seat; 17 is a driving member; 18 is a support column; 19 is a cover; 2 is a driving assembly; 3 is a tool change arm. DETAILED DESCRIPTION

[0021] 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 protection scope of the utility model.

[0022] Embodiment 1 of the present utility model, as Figure 1 As shown, it is the state of the tool magazine assembly before tool change, the tool clamping mechanism 16 and the turntable are both in a vertical state, the second embodiment of the utility model, Figure 2 and Figure 3 As shown, the difference from the first embodiment is that the position of the tool clamping mechanism 16 at the bottom of the tool magazine assembly 1 changes, which is the state of the tool magazine assembly during tool change. A tool changing arm 3 is connected to the bottom of the drive assembly 2. The tool magazine assembly 1 includes a tool magazine back plate 11 close to the drive assembly 2. A raised sleeve is provided on the side of the center of the tool magazine back plate 11 away from the drive assembly 2, a turntable 12 is installed on the sleeve, and a mounting plate 13 is fixed to the other end of the sleeve. The tool magazine back plate 11 and the mounting plate 13 are fixedly connected, and the turntable 12 is movably arranged on the sleeve between the two. A tool magazine drive motor 14 and a tool changing cylinder 15 are provided on the mounting plate 13, and a tool clamping mechanism 16 distributed in an annular manner is provided on the outer peripheral surface of the turntable 12. A tool changing groove 111 is provided directly below the tool magazine back plate 11. The tool magazine drive motor 14 moves the tool clamping mechanism 16 to be replaced to the bottom, and moves the tool to the tool changing groove 111 through the tool changing cylinder 15, which facilitates the tool changing action of the tool changing arm 3 and improves the tool changing efficiency.

[0023] The turntable 12 is provided with a first card slot 121 located in the center and a second card slot 122 located at the edge. The first card slot 121 corresponds to the output end position of the tool magazine drive motor 14, and the tool clamping mechanism 16 is installed in the second card slot 122. The tool magazine drive motor 14 drives the turntable 12 to rotate through the first card slot 121, thereby driving the surrounding tool clamping mechanism 16 to rotate, and selecting the required tool to move to the tool changing slot 111 position.

[0024] The third slots 123 connected end to end are arranged on the interval edge of the turntable 12 between the second slots 122, and the rotating shafts 162 are installed in sequence in the third slots 123. The tool clamping mechanism 16 is movably installed on the rotating shaft 162, which completes the tool changing action by cooperating with the tool changing arm 3 through a 90° flip.

[0025] The output end of the tool magazine drive motor 14 is connected to a drive member 17, which includes a connecting rod with a circular plate fixedly connected to the tool magazine drive motor 14. Two groups of movable pressure wheels are installed on the side of the circular plate away from the tool magazine drive motor 14. The movable pressure wheels abut against the inner wall of the first slot 121. The tool magazine drive motor 14 drives the two groups of pressure wheels to periodically abut against the first slot 121, so that the pressure wheels are respectively engaged in adjacent first slots 121 to drive the turntable to rotate. Compared with the gear meshing form, this structure has low wear and low noise, and can achieve higher tool changing accuracy.

[0026] The tool clamping mechanism 16 includes a steering member 161 that passes through a rotating shaft 162 and is arranged in the second slot 122. A tool fixing seat 163 is arranged on the side of the steering member 61 away from the first slot 121. The output end of the tool changing cylinder 15 is in contact with the steering member 161 through a pressure plate. When the required tool moves to the lowermost position, the in-position signal is detected by the photoelectric switch, and the tool changing cylinder 15 is actuated to push the tool fixing seat 163 to flip into the tool changing slot 111.

[0027] The tool changing slot 111 penetrates along the thickness direction of the tool magazine back plate 11 , and the width of the tool changing slot 111 is greater than the diameter of the tool fixing seat 163 , so that the corresponding tool fixing seat 163 can be smoothly flipped to reach the tool changing slot 111 .

[0028] At least three support columns 18 are fixed on the mounting plate 13 , and a cover 19 is connected to the top of the support column 18 for isolating the tool magazine drive motor 14 and the tool changing cylinder 15 .

[0029] The working principle of this embodiment is as follows: according to the tool model required for the processing, the tool magazine assembly retrieves the location of the corresponding tool, and the tool magazine drive motor drives the tool clamping mechanism to rotate through the drive member until the corresponding tool reaches the bottom tool changing slot. After it is in place, the push rod of the tool changing cylinder extends to push the tool fixing seat to flip it into the tool changing slot, and the drive assembly drives the tool changing arm to make it clamped with the tool connected to the bottom of the tool fixing seat. The tool changing arm continues to rotate to move the tool to the processing location to complete the tool change, and replace the disassembled tool with the early tool fixing seat.

[0030] Several points that need to be explained are: First, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, and can be mechanical or electrical connections, or internal connectivity between two elements, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative position relationships. When the absolute position of the object being described changes, the relative position relationship may change; secondly, in this article, relational terms such as first and second, etc. are only used to distinguish one entity from another, and do not necessarily require or imply that there is any such actual relationship or order between these entities.

[0031] The above examples are merely illustrative of the present invention and do not constitute a limitation on the protection scope of the present invention. All designs that are identical or similar to the present invention fall within the protection scope of the present invention.

Claims

1. A high-precision ATC automatic tool changing mechanism, comprising a tool magazine assembly (1) and a drive assembly (2) vertically mounted on a machine tool, characterized in that: The bottom of the driving assembly (2) is connected to a tool changing arm (3), and the tool magazine assembly (1) comprises a tool magazine back plate (11) close to the driving assembly (2). A raised sleeve is provided at the center of the tool magazine back plate (11) away from the driving assembly (2), a rotating disk (12) is mounted on the sleeve, and a mounting plate (13) is fixed to the other end of the sleeve. A tool magazine driving motor (14) and a tool changing cylinder (15) are arranged on the mounting plate (13). The outer peripheral surface of the rotating disk (12) is provided with a tool clamping mechanism (16) distributed in an annular manner, and a tool changing groove (111) is provided directly below the tool magazine back plate (11).

2. A high-precision ATC automatic tool changing mechanism according to claim 1, characterized in that: The rotating disk (12) is provided with a first card slot (121) located at the center and a second card slot (122) located at the edge, the first card slot (121) corresponds to the output end position of the tool magazine drive motor (14), and the tool clamping mechanism (16) is installed in the second card slot (122).

3. A high-precision ATC automatic tool changing mechanism according to claim 2, characterized in that: Third card slots (123) connected end to end are provided on the interval edge of the rotating disk (12) between the second card slots (122), and rotating shafts (162) are installed in sequence in the third card slots (123).

4. A high-precision ATC automatic tool changing mechanism according to claim 1, characterized in that: The output end of the tool magazine drive motor (14) is connected to a drive member (17), the drive member (17) comprising a connecting rod with a circular plate fixedly connected to the tool magazine drive motor (14), two sets of movable pressure wheels being mounted on a side of the circular plate away from the tool magazine drive motor (14), the movable pressure wheels being in contact with the inner wall of the first clamping groove (121).

5. A high-precision ATC automatic tool changing mechanism according to claim 1, characterized in that: The tool clamping mechanism (16) comprises a steering member (161) passing through a rotating shaft (162) and arranged in the second clamping groove (122); a tool fixing seat (163) is arranged on a side of the steering member (161) away from the first clamping groove (121); and an output end of the tool changing cylinder (15) abuts against the steering member (161) via a pressure plate.

6. A high-precision ATC automatic tool changing mechanism according to claim 1, characterized in that: The tool changing groove (111) penetrates along the thickness direction of the tool magazine back plate (11), and the width of the tool changing groove (111) is greater than the diameter of the tool fixing seat (163).

7. A high-precision ATC automatic tool changing mechanism according to claim 1, characterized in that: At least three support columns (18) are fixed on the mounting plate (13), and a cover shell (19) is connected to the top of the support column (18).

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