A tool changer of the knife arm type

Abstract

The utility model relates to tool changing technology field, concretely discloses a kind of tool exchange device of tool arm type, including tool rest main body;First tool arm and second tool arm are installed in the side of tool rest main body, and mutually clamped between two, the side of first tool arm and second tool arm is fixedly installed with claw hook, this one tool exchange device of tool arm type, by the setting of connecting frame, movable plate, extension spring, clamping block and moving plate, first disconnect the connecting relationship of fixed rod and first tool arm, movable plate is mutually close to each other by cooperation moving block and fixed plate, make extension spring be in compressed state, drive clamping block gradually separate from first tool arm interior with movable plate movement, this structure is convenient for operator to quickly disassemble first tool arm and second tool arm, and it is convenient to regularly replace movable spring, simultaneously, clamping block can be reintroduced first tool arm interior using the inertia of extension spring, realize the quick installation of first tool arm and second tool arm.

Description

Technical Field

[0001] This utility model relates to the field of machine tool tool changing technology, specifically a tool arm type tool changing device. Background Technology

[0002] In the field of modern machining, CNC machine tools are developing towards high efficiency, automation, and high precision. Tool changing efficiency and stability have become key factors affecting machining capacity. Traditional manual tool changing methods are cumbersome, time-consuming, and prone to errors, and can no longer meet the needs of mass production. Automated tool changing devices have emerged, among which the tool arm type tool changing device has become one of the core configurations of mid-to-high-end CNC machine tools due to its fast tool changing speed and compact structure. Early tool changing devices had defects such as insufficient tool arm positioning accuracy, large impact during tool changing, and high failure rate. Especially when dealing with heavy tools or switching between multiple types of tools, problems such as unstable clamping and tool changing jamming are prone to occur. As the manufacturing industry's requirements for machining accuracy and efficiency increase, the industry urgently needs to optimize the main body of the tool arm and tool holder, the positioning and detection system, and the tool clamping structure to further improve the reliability, compatibility, and dynamic response capability of the tool changing device and adapt to the high-efficiency machining needs of complex parts.

[0003] Currently, during long-term use, the springs inside the positioning rod and positioning pin of this device need to be replaced periodically to prevent spring fatigue from affecting the fixing effect of the tool arm on the tool. However, traditional tool arms are usually fixed with multiple sets of bolts, which not only reduces the efficiency of subsequent disassembly, but also makes the bolts prone to corrosion when exposed to air for a long time, leading to loosening. This not only affects the subsequent operation of the equipment, but also makes it difficult for staff to replace the relevant parts in time. Therefore, we propose a tool arm-type tool exchange device. Utility Model Content

[0004] The purpose of this utility model is to provide a tool arm type tool exchange device to solve the problem of the cumbersome disassembly and installation process mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a tool arm type tool exchange device, including a tool holder body, a first tool arm and a second tool arm are installed on one side of the tool holder body and are engaged with each other, a claw hook is fixedly installed on one side of each of the first and second tool arms, and a locking mechanism for connecting the first and second tool arms is installed on one side of the claw hook. The outer surface of the locking mechanism is fixedly connected to the second tool arm and extends into the interior of the first tool arm. The locking mechanism can quickly fix the positional relationship between the first and second tool arms.

[0006] The snap-fit ​​mechanism includes a connecting frame and a movable plate located inside the connecting frame. The outer surface of the connecting frame is fixed to the second cutter arm and extends into the interior of the first cutter arm. The outer surface of the movable plate is movably connected to the inner wall of the connecting frame.

[0007] The movable plate has a movable block fixedly installed on its top, and one end of the movable block passes through the interior of the connecting frame and is movably connected to it. A fixed plate is fixedly installed inside the connecting frame, and a telescopic spring is fixedly installed on one end of the fixed plate.

[0008] One end of the telescopic spring is fixed to one side of the movable plate, and a snap-fit ​​block is fixedly installed on the side of the movable plate away from the telescopic spring. The inside of the first cutter arm is provided with a groove that matches the snap-fit ​​block, and the outer surface of the snap-fit ​​block is located inside the groove.

[0009] The outer surface of the connecting frame is fixedly equipped with a connecting plate, and one side of the connecting plate is in contact with the outer surface of the second cutter arm. A fixing rod is movably installed inside the connecting plate. One end of the fixing rod extends into the interior of the first cutter arm and is threadedly connected to it. The fixing rods are distributed on both sides of the snap-fit ​​block.

[0010] The first cutter arm has a movably mounted positioning block inside, and the positioning block is located on one side of the claw hook. A limit ring is fixedly mounted on one side of the positioning block, and a movable spring is installed inside the limit ring. One end of the movable spring is in contact with one side of the positioning block.

[0011] The positioning block has a positioning rod fixedly installed on one side, and one end of the positioning rod passes through the interior of the movable spring. A positioning pin is installed on one side of the positioning rod, and the positions of the positioning block and the movable spring are effectively restricted by the first and second cutting arms.

[0012] This utility model has at least the following beneficial effects:

[0013] By using a connecting frame, movable plate, telescopic spring, snap-fit ​​block, and moving plate, the connection between the fixed rod and the first cutter arm is first disconnected. The movable plate, in conjunction with the moving block and fixed plate, brings the movable plate closer together, compressing the telescopic spring. This causes the snap-fit ​​block to gradually detach from the first cutter arm as the movable plate moves. This structure allows operators to quickly disassemble the first and second cutter arms and facilitates the periodic replacement of the movable spring. Simultaneously, the inertia of the telescopic spring allows the snap-fit ​​block to be reintroduced into the first cutter arm, enabling rapid installation of the first and second cutter arms. Even if the fixed rod becomes loose during subsequent operations, the connection between the first and second cutter arms will not immediately detach due to the synergistic effect of the snap-fit ​​block, allowing for timely detection and reinforcement by the operator. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the second cutter arm structure of this utility model;

[0016] Figure 3 for Figure 1 A magnified schematic diagram of the structure of part A in the diagram;

[0017] Figure 4 This is a schematic diagram of the internal structure of the first cutter arm of this utility model;

[0018] Figure 5 This is a schematic diagram of the internal structure of the connecting frame of this utility model.

[0019] In the diagram: 1. Tool holder body; 2. First tool arm; 3. Second tool arm; 4. Claw hook; 5. Snap-fit ​​mechanism; 51. Connecting frame; 52. Movable plate; 53. Moving block; 54. Fixed plate; 55. Telescopic spring; 56. Snap-fit ​​block; 6. Connecting plate; 7. Fixed rod; 8. Positioning block; 9. Limiting ring; 10. Movable spring; 11. Positioning rod; 12. Positioning pin. Detailed Implementation

[0020] 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, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figures 1 to 5 This utility model provides a technical solution: a tool arm type tool exchange device, including a tool holder body 1, a first tool arm 2 and a second tool arm 3 installed on one side of the tool holder body 1, and the two are interlocked with each other. A claw hook 4 is fixedly installed on one side of the first tool arm 2 and the second tool arm 3. A locking mechanism 5 for connecting the first tool arm 2 and the second tool arm 3 is installed on one side of the claw hook 4. The outer surface of the locking mechanism 5 is fixedly connected to the second tool arm 3 and extends into the interior of the first tool arm 2. The locking mechanism 5 can effectively and quickly fix the positional relationship of the first tool arm 2 and the second tool arm 3, and facilitate subsequent disassembly. It is known that the tool holder body 1 is an existing device, which can realize the rotation and back-and-forth movement of the first tool arm 2 and the second tool arm 3, and achieve the effect of tool replacement.

[0022] The locking mechanism 5 includes a connecting frame 51 and a movable plate 52 located inside the connecting frame 51. The outer surface of the connecting frame 51 is fixed to the second cutter arm 3 and extends into the interior of the first cutter arm 2. The outer surface of the movable plate 52 is movably connected to the inner wall of the connecting frame 51. Through the setting of the movable plate 52, it can drive the locking block 56 to move synchronously by its own movement, so that the locking block 56 can smoothly enter or disengage from the interior of the first cutter arm 2, and at the same time, it can change the state of the telescopic spring 55 itself.

[0023] A movable block 53 is fixedly installed on the top of the movable plate 52, and one end of the movable block 53 passes through the interior of the connecting frame 51 and is movably connected to it. A fixed plate 54 is fixedly installed inside the connecting frame 51, and a telescopic spring 55 is fixedly installed on one end of the fixed plate 54. The movable block 53 facilitates the effective adjustment of the position of the movable plate 52 by the staff.

[0024] One end of the telescopic spring 55 is fixed to one side of the movable plate 52, and a snap-fit ​​block 56 is fixedly installed on the side of the movable plate 52 away from the telescopic spring 55. The inside of the first cutter arm 2 is provided with a groove that matches the snap-fit ​​block 56, and the outer surface of the snap-fit ​​block 56 is located inside the groove. With the setting of the telescopic spring 55, when it is in a compressed state, it can use its own inertia to push the snap-fit ​​block 56 smoothly into the inside of the first cutter arm 2, and quickly connect the positions between the first cutter arm 2 and the second cutter arm 3.

[0025] A connecting plate 6 is fixedly installed on the outer surface of the connecting frame 51, and one side of the connecting plate 6 is in contact with the outer surface of the second cutter arm 3. A fixing rod 7 is movably installed inside the connecting plate 6. One end of the fixing rod 7 extends into the interior of the first cutter arm 2 and is threadedly connected to it. The fixing rods 7 are distributed on both sides of the snap-fit ​​block 56. By setting the snap-fit ​​block 56, the connection between the first cutter arm 2 and the second cutter arm 3 can be quickly disassembled and fixed by its own movement.

[0026] A positioning block 8 is movably installed inside the first cutter arm 2, and the positioning block 8 is located on one side of the claw hook 4. A limit ring 9 is fixedly installed on one side of the positioning block 8, and a movable spring 10 is installed inside the limit ring 9. One end of the movable spring 10 is in contact with one side of the positioning block 8. It is known that the positioning block 8 is an existing structure in the cutter arm type tool exchange device, which can effectively restrict the tool inside the claw hook 4 to prevent it from falling out.

[0027] A positioning rod 11 is fixedly installed on one side of the positioning block 8, and one end of the positioning rod 11 passes through the interior of the movable spring 10. A positioning pin 12 is installed on one side of the positioning rod 11, and the positions of the positioning block 8 and the movable spring 10 are effectively restricted by the first cutter arm 2 and the second cutter arm 3.

[0028] The working principle of a tool changing device based on an embodiment is as follows: First, when it is necessary to replace the movable spring 10 and positioning pin 12 inside the first tool arm 2 and the second tool arm 3, the fixing rod 7 is removed from the inside of the first tool arm 2, and the positional relationship between the first tool arm 2 and the second tool arm 3 is initially released. At the same time, the movable block 53 and the fixing plate 54 are used to bring the movable plate 52 closer together, so that the snap-fit ​​block 56 gradually enters the inside of the connecting frame 51 from the inside of the first tool arm 2 under the drive of the movable plate 52, thereby facilitating the operator to quickly remove the first tool arm 2 and the second tool arm 3. At this time, the telescopic spring 55 is in a compressed state under the drive of the movable plate 52. After the operator has completed the replacement, the second tool arm 3 is used to move the connecting frame 51 into the inside of the first tool arm 2, and with the inertia of the telescopic spring 55, the snap-fit ​​block 56 is effectively pushed into the inside of the first tool arm 2, and the first tool arm 2 and the second tool arm 3 are quickly installed. At this point, the overall operation process is completed.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0030] 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 with a tool arm, comprising a tool holder body, characterized in that: A first cutter arm and a second cutter arm are installed on one side of the main body of the cutter holder, and the two are interlocked with each other. A claw hook is fixedly installed on one side of the first cutter arm and the second cutter arm. A locking mechanism for connecting the first cutter arm and the second cutter arm is installed on one side of the claw hook. The outer surface of the locking mechanism is fixedly connected to the second cutter arm and extends into the interior of the first cutter arm. The positional relationship between the first cutter arm and the second cutter arm is fixed by the locking mechanism.

2. The tool changing device of the tool arm type according to claim 1, characterized in that: The snap-fit ​​mechanism includes a connecting frame and a movable plate located inside the connecting frame. The outer surface of the connecting frame is fixed to the second cutter arm and extends into the interior of the first cutter arm. The outer surface of the movable plate is movably connected to the inner wall of the connecting frame.

3. The tool changing device of claim 2, characterized in that: A movable block is fixedly installed on the top of the movable plate, and one end of the movable block passes through the interior of the connecting frame and is movably connected thereto. A fixed plate is fixedly installed inside the connecting frame, and a telescopic spring is fixedly installed on one end of the fixed plate.

4. The tool changing device of claim 3, characterized in that: One end of the telescopic spring is fixed to one side of the movable plate, and a snap-fit ​​block is fixedly installed on the side of the movable plate away from the telescopic spring. The first blade arm has a groove inside that matches the snap-fit ​​block, and the outer surface of the snap-fit ​​block is located inside the groove.

5. The tool changing device of the tool arm type according to claim 2, characterized in that: A connecting plate is fixedly installed on the outer surface of the connecting frame, and one side of the connecting plate is in contact with the outer surface of the second cutter arm. A fixing rod is movably installed inside the connecting plate. One end of the fixing rod extends into the interior of the first cutter arm and is threadedly connected to it. The fixing rods are distributed on both sides of the snap-fit ​​block.

6. The tool changing device of claim 1, characterized in that: A positioning block is movably installed inside the first cutter arm, and the positioning block is located on one side of the claw hook. A limit ring is fixedly installed on one side of the positioning block, and a movable spring is installed inside the limit ring. One end of the movable spring is in contact with one side of the positioning block.

7. A tool changer of a tool arm type according to claim 6, characterized in that: A positioning rod is fixedly installed on one side of the positioning block, and one end of the positioning rod passes through the interior of the movable spring. A positioning pin is installed on one side of the positioning rod, and the positions of the positioning block and the movable spring are effectively restricted by the first cutting arm and the second cutting arm.

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