Multi-shaft chuck device for a knife sharpener

Abstract

The utility model discloses a multi -spindle chuck device for knife grinder relates to knife grinder technical field. The utility model discloses a base is equipped with the multi -spindle chuck subassembly on the base, and the multi -spindle chuck subassembly includes first drive motor, mounting panel, mechanical arm and pneumatic fixture, and first drive motor sets up in the base top, and the mounting panel sets up in the main shaft end of first drive motor, and the mechanical arm sets up in the mounting panel top, and one end of mechanical arm is connected with pneumatic fixture through second drive motor. The utility model discloses through first stable component radial pressure tight pneumatic fixture and inhibits the bounce, and second stable component axial locking fixed plate overcomes the vibration, and utilizes the adaptive adjustment of pressure sensor and electric telescopic handle, realized the flexible limiting of many directions, significantly promoted the grinding accuracy and system rigidity, reduced the radial bounce and axial vibration in the grinding, improved the machining accuracy, reduced the tool wear.

Description

Technical Field

[0001] This utility model relates to the field of knife grinding machine technology, and specifically to a multi-axis chuck device for knife grinding machines. Background Technology

[0002] Traditional tool grinding machine chuck devices are prone to radial runout and axial vibration during high-speed grinding due to the leverage effect of the robotic arm and the overhang structure of the pneumatic clamp. This leads to unstable machining accuracy, accelerated tool wear, and a lack of effective multi-directional limiting mechanisms to suppress vibration.

[0003] Therefore, a multi-axis chuck device for a knife grinding machine is proposed. Utility Model Content

[0004] To address the problems existing in the prior art, this utility model provides a multi-axis chuck device for a knife grinding machine.

[0005] To achieve the above objectives, this utility model specifically adopts the following technical solution: A multi-axis chuck device for a knife grinding machine includes a base, on which a multi-axis chuck assembly is mounted. The multi-axis chuck assembly includes a first drive motor, a mounting plate, a robotic arm, and a pneumatic clamp. The first drive motor is located at the top of the base, the mounting plate is located at the spindle end of the first drive motor, and the robotic arm is located at the top of the mounting plate. One end of the robotic arm is connected to the pneumatic clamp via a second drive motor. A fixed cover is provided at one end of the robotic arm, and the second drive motor and the pneumatic clamp are housed inside the fixed cover. A fixed plate is provided on each side of the mounting plate. A first stabilizing member for initial positioning of the pneumatic clamp is provided inside the fixed cover, and a second stabilizing member for secondary positioning of the pneumatic clamp is provided outside the fixed cover.

[0006] Furthermore, the first stabilizing component includes a first electric telescopic rod and a first stabilizing plate. The first electric telescopic rod is horizontally disposed on one side inside the fixed cover, with its telescopic end facing the pneumatic clamp.

[0007] Furthermore, the first stabilizing plate is connected to the telescopic end of the first electric telescopic rod, the outline of the first stabilizing plate is in contact with the outer arc of the pneumatic clamp, and a first shock-absorbing pad is provided on the side of the first stabilizing plate facing the pneumatic clamp.

[0008] Furthermore, the second stabilizing component includes a second electric telescopic rod and a second stabilizing plate. The second electric telescopic rod is disposed outside the fixed cover, and the second stabilizing plate is connected to the telescopic end of the second electric telescopic rod via a universal joint. A second shock-absorbing pad is disposed on the side of the second stabilizing plate facing the fixed plate.

[0009] Furthermore, a first pressure sensor is embedded inside the first stabilizing plate, and the first pressure sensor is electrically connected to the first electric telescopic rod; a second pressure sensor is embedded inside the second stabilizing plate, and the second pressure sensor is electrically connected to the second electric telescopic rod.

[0010] Furthermore, the fixing plate is provided with mounting holes for fixing it to one side of the mounting plate.

[0011] The beneficial effects of this utility model are as follows: This invention suppresses runout by radially pressing a pneumatic clamp with a first stabilizing component, overcomes vibration by axially locking a fixed plate with a second stabilizing component, and achieves multi-directional flexible limiting by utilizing the adaptive adjustment of a pressure sensor and an electric telescopic rod. This significantly improves grinding accuracy and system rigidity, reduces radial runout and axial vibration during grinding, improves machining accuracy, and reduces tool wear. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the multi-axis chuck assembly structure of this utility model; Figure 3 This is a schematic diagram of the structure of the first stabilizing component and the second stabilizing component of this utility model.

[0013] Reference numerals: 1. Base; 2. First drive motor; 3. Mounting plate; 4. Robotic arm; 5. Pneumatic clamp; 6. Second drive motor; 7. Fixing cover; 8. Fixing plate; 9. First stabilizing component; 901. First electric telescopic rod; 902. First stabilizing plate; 903. First shock-absorbing pad; 10. Second stabilizing component; 1001. Second electric telescopic rod; 1002. Second stabilizing plate; 1003. Second shock-absorbing pad. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0015] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0016] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0017] In the description of the embodiments of this utility model, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0018] like Figure 1-3As shown, a multi-axis chuck device for a knife grinding machine includes a base 1, on which a multi-axis chuck assembly is mounted. The multi-axis chuck assembly includes a first drive motor 2, a mounting plate 3, a robotic arm 4, and a pneumatic clamp 5. The first drive motor 2 is located at the top of the base 1, and the base 1 has mounting holes for fixing to the knife grinding machine base by bolts. The first drive motor 2 is fixed to the top of the base 1 by a flange or bolts. Its spindle is vertically oriented and can provide 360° rotational motion, thereby driving the entire chuck assembly to adjust its angle in the horizontal plane. The mounting plate 3 is located at the spindle end of the first drive motor 2 and is fixed to the spindle end of the first drive motor 2 by a key connection or interference fit, rotating with the spindle. The robotic arm 4 is located at the top of the mounting plate 3. The robotic arm 4 is an electrically connected arm that is driven to rotate by a motor. Its proximal end is fixed to the top of the mounting plate 3 by bolts, and its distal end extends outward. The robotic arm 4 is used to provide a working radius and increase the working range of the pneumatic clamp 5. One end of the robotic arm 4 is connected to the second drive motor 5 by a second drive motor 6. The first drive motor 6 is connected to the pneumatic clamp 5. The second drive motor 6 is mounted on the far end of the robotic arm 4 via an L-shaped bracket or directly via a bearing seat. Its main shaft is set in the horizontal direction. The second drive motor 6 is used to drive the pneumatic clamp 5 to adjust its angle. The pneumatic clamp 5 can be a standard part in the prior art, which is directly connected to the main shaft end of the second drive motor 6 via a coupling or flange. It is driven by the second drive motor 6 to rotate. The pneumatic clamp 5 is used to clamp the tool to be sharpened. A fixed cover 7 is set at one end of the robotic arm 4. The second drive motor 6 and the pneumatic clamp 5 are housed inside the fixed cover 7. The fixed cover 7 is a shell structure with one open end, such as a U-shaped cover. It is fixed to the far end of the robotic arm 4 by bolts, and the root of the second drive motor 6 and the pneumatic clamp 5 are housed inside it, which plays a major protective and support role. A fixed plate 8 is set on each side of the mounting plate 3. A first stabilizing member 9 is set inside the fixed cover 7 to initially limit the pneumatic clamp 5. A second stabilizing member 10 is set outside the fixed cover 7 to further limit the pneumatic clamp 5.

[0019] like Figure 3 As shown, the first stabilizing component 9 includes a first electric telescopic rod 901 and a first stabilizing plate 902. The first electric telescopic rod 901 is horizontally arranged inside the fixed cover 7 on one side, and its telescopic end faces the pneumatic clamp 5. Specifically, the first electric telescopic rod 901 can be a servo electric cylinder that is horizontally fixed inside the fixed cover 7 by a bracket, and the axis of its telescopic shaft points to the clamping center of the pneumatic clamp 5.

[0020] like Figure 3As shown, the first stabilizing plate 902 is connected to the telescopic end of the first electric telescopic rod 901. The outline of the first stabilizing plate 902 fits the outer arc of the pneumatic clamp 5. A first shock-absorbing pad 903 is provided on the side of the first stabilizing plate 902 facing the pneumatic clamp 5. Specifically, the first stabilizing plate 902 is an arc-shaped pressure plate that fits the outer arc of the pneumatic clamp 5. It is made of metal and is fixedly connected to the telescopic end of the first electric telescopic rod 901 by screws. The first shock-absorbing pad 903 is made of elastic material such as polyurethane. Made of rubber, it is fixed to the arc surface of the first stabilizing plate 902 by adhesive or slot. When the pneumatic clamp 5 holds the tool for grinding, the first electric telescopic rod 901 receives a signal and extends, pushing the first stabilizing plate 902 and the first shock-absorbing pad 903 on it until they are pressed tightly against the outer shell of the pneumatic clamp 5. This provides a strong lateral support force for the pneumatic clamp 5 in the radial X-axis direction, effectively suppressing the radial runout generated when it rotates at high speed and the radial reaction force it receives during grinding, thus achieving "initial limiting".

[0021] like Figure 3 As shown, the second stabilizing component 10 includes a second electric telescopic rod 1001 and a second stabilizing plate 1002. The second electric telescopic rod 1001 is disposed outside the fixed cover 7. The second stabilizing plate 1002 is connected to the telescopic end of the second electric telescopic rod 1001 via a universal joint. A second damping pad 1003 is disposed on the side of the second stabilizing plate 1002 facing the fixed plate 8. Specifically, the universal joint allows the second stabilizing plate 1002 to adaptively adjust its angle within a certain range, ensuring full contact with the surface of the fixed plate 8. When additional stability is required, the second electric telescopic rod 1001 extends downward and pushes the second stabilizing plate 1002 through the universal joint, causing the second damping pad 1003 below it to press tightly against the surface of the fixed plate 8 below. This action locks the relative height between the pneumatic clamp 5 and the base 1 in the Z-axis direction, providing a strong axial locking force for the entire system, overcoming the instability of the robotic arm 4 due to the lever action and causing it to deviate from the axis, effectively suppressing the axial vibration generated during grinding feed, and achieving "secondary limiting".

[0022] like Figure 3As shown, a first pressure sensor is embedded inside the first stabilizing plate 902, and the first pressure sensor is electrically connected to the first electric telescopic rod 901; a second pressure sensor is embedded inside the second stabilizing plate 1002, and the second pressure sensor is electrically connected to the second electric telescopic rod 1001. Specifically, all the electrical components are electrically connected to an external controller. The controller system presets an optimal pressure threshold. When the telescopic rod pushes the stabilizing plate to contact the target object (pneumatic clamp 5 or fixed plate 8), the pressure sensor provides real-time feedback of the pressure value. The controller precisely controls the extension of the telescopic rod based on the feedback value, so that the pressure is stabilized at the preset threshold, thereby achieving adaptive and flexible stable clamping, avoiding rigid impact damage to the equipment, and ensuring the best vibration damping effect.

[0023] like Figure 1-2 As shown, the fixing plate 8 has mounting holes for fixing it to one side of the mounting plate 3; specifically, the fixing plate 8 is used to connect to the mounting plate 3 with bolts when extremely high stability is required, thereby locking the entire multi-axis chuck assembly, preventing it from rotating, and increasing the rigidity of the system. The length and height of the fixing plate 8 are determined according to the displacement values ​​of the chuck in different axes, and are not limited here.

[0024] In summary: the first drive motor 2 drives the mounting plate 3 to rotate horizontally to adjust the circumferential angle of the pneumatic clamp 5; the second drive motor 6 drives the pneumatic clamp 5 to adjust the tilt angle to hold the tool; the robotic arm 4 adjusts the distance of the pneumatic clamp 5 from the grinding disc of the grinding machine; during the grinding process, the first electric telescopic rod 901 pushes the first stabilizing plate 902 with the first shock-absorbing pad 903 to radially press the outer shell of the pneumatic clamp 5 to achieve initial positioning; the second electric telescopic rod 1001 pushes the second stabilizing plate 1002 with the second shock-absorbing pad 1003 through the universal joint to axially press the fixing plate 8 to achieve secondary locking; and the built-in pressure sensor provides real-time pressure feedback to the controller, enabling the telescopic rod to adaptively adjust the pressure to suppress vibration and ensure greater stability during subsequent tool grinding.

[0025] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A multi-axis chuck device for a knife grinding machine, comprising a base (1), characterized in that: The base (1) is provided with a multi-axis chuck assembly, which includes a first drive motor (2), a mounting plate (3), a robotic arm (4), and a pneumatic clamp (5). The first drive motor (2) is located at the top of the base (1), the mounting plate (3) is located at the spindle end of the first drive motor (2), the robotic arm (4) is located at the top of the mounting plate (3), and one end of the robotic arm (4) is connected to the pneumatic clamp (5) via a second drive motor (6). One end of the robotic arm (4) is provided with a fixing cover (7), and the second drive motor (6) and the pneumatic clamp (5) are housed inside the fixing cover (7). A fixing plate (8) is provided on each side of the mounting plate (3). The fixing cover (7) is provided with a first stabilizing member (9) that initially limits the pneumatic clamp (5), and the fixing cover (7) is provided with a second stabilizing member (10) that secondarily limits the pneumatic clamp (5) on the outside.

2. The multi-axis chuck device for a knife grinding machine according to claim 1, characterized in that, The first stabilizing component (9) includes a first electric telescopic rod (901) and a first stabilizing plate (902). The first electric telescopic rod (901) is horizontally arranged on one side inside the fixed cover (7), and its telescopic end faces the pneumatic clamp (5).

3. The multi-axis chuck device for a knife grinding machine according to claim 2, characterized in that, The first stabilizing plate (902) is connected to the telescopic end of the first electric telescopic rod (901). The outline of the first stabilizing plate (902) fits the outer arc of the pneumatic clamp (5). A first shock-absorbing pad (903) is provided on the side of the first stabilizing plate (902) facing the pneumatic clamp (5).

4. The multi-axis chuck device for a knife grinding machine according to claim 3, characterized in that, The second stabilizing component (10) includes a second electric telescopic rod (1001) and a second stabilizing plate (1002). The second electric telescopic rod (1001) is disposed outside the fixed cover (7). The second stabilizing plate (1002) is connected to the telescopic end of the second electric telescopic rod (1001) through a universal joint. A second shock-absorbing pad (1003) is provided on the side of the second stabilizing plate (1002) facing the fixed plate (8).

5. A multi-axis chuck device for a knife grinding machine according to claim 4, characterized in that, The first stabilizing plate (902) has a first pressure sensor embedded inside, and the first pressure sensor is electrically connected to the first electric telescopic rod (901); the second stabilizing plate (1002) has a second pressure sensor embedded inside, and the second pressure sensor is electrically connected to the second electric telescopic rod (1001).

6. The multi-axis chuck device for a knife grinding machine according to claim 1, characterized in that, The fixing plate (8) has mounting holes for fixing it to one side of the mounting plate (3).

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