Cutter clamping jaw
By designing an automated tool gripper mechanism, the problem of large manual installation deviations during tool changing operations on CNC machine tools was solved, achieving efficient and precise tool gripping and improving processing efficiency and product quality.
Patent Information
- Application Number
- CN202422919677.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-28
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-11-28
AI Technical Summary
In existing CNC machine tools, tool changing operations rely on manual tool installation, which leads to large installation deviations, reducing processing efficiency and product quality.
A tool gripper was designed, integrating a guide rod cylinder, a wedge-shaped movable slider, and a two-way horizontal clamp. It achieves precise tool gripping through an automated mechanism, and uses a tool holder recognition sensor to detect and control the movement of the gripper.
It achieves efficient, precise, and automated installation of cutting tools, improves gripping efficiency, saves time and labor costs, and ensures installation accuracy.
Smart Images

Figure CN223544753U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of functional components of CNC machine tools, specifically to a tool gripper. Background Technology
[0002] When changing tools on a CNC machine tool, it is usually necessary to remove the tool from the tool magazine and install it onto the spindle. The traditional method is to manually remove the tool and assemble it onto the high-speed spindle. However, this manual handling method is not only prone to large tool installation deviations, but also reduces machining efficiency and product quality due to the slow tool selection and installation process. Utility Model Content
[0003] (I) Problems to be solved
[0004] The technical problem to be solved by this utility model is to provide a tool gripper in light of the current state of the technology.
[0005] (II) Technical Solution
[0006] This utility model is achieved through the following technical solution: This utility model proposes a tool gripper, including a guide rod cylinder, with a gripper cylinder washer connected to the guide rod of the guide rod cylinder. A fixed end seat is fixedly connected to the guide rod side of the guide rod cylinder, and a movable opening is provided in the center of the fixed end seat for the guide rod and the gripper cylinder washer to pass through. A tool holder positioning sleeve and an openable bidirectional horizontal clamp are installed at the lower end of the fixed end seat. The bidirectional horizontal clamp is located on both sides of the gripper cylinder washer and is enclosed in the upper cavity of the tool holder positioning sleeve. A wedge-shaped bevel is provided on the inner surface of the bidirectional horizontal clamp, and a wedge-shaped movable slider is installed on the wedge-shaped bevel. The wedge-shaped movable slider is connected to the gripper cylinder washer. A gripping claw is installed on the outer side of the bidirectional horizontal clamp.
[0007] By adopting the above technical solution, when gripping a tool, the tool holder recognition sensor first detects whether a tool is present below. After confirming that a tool is to be gripped, the guide rod cylinder drives the guide rod to move upward. The gripper cylinder washer then drives the wedge-shaped movable slider to move upward, causing the bidirectional horizontal clamp to open towards both sides of the gripping jaws, thereby opening the bidirectional horizontal clamp and the gripping jaws. When the jaws of the tool grippers descend to be flush with the gripping part above the tool, the guide rod cylinder drives the guide rod to move downward, and the gripper cylinder washer then drives the wedge-shaped movable slider to move downward, causing the bidirectional horizontal clamp to move inward, so that the jaws fit with the gripping part, thereby completing the gripping action of the gripping jaws to grasp the tool.
[0008] Furthermore, the tool holder positioning sleeve includes a lower clamping part, and the inner side of the lower clamping part is provided with an arc-shaped mating surface that matches and fits into the shape of the upper part of the tool holder.
[0009] Furthermore, the tool holder positioning sleeve is connected to the fixed end seat bolt.
[0010] Furthermore, the gripping jaws have a rounded end face.
[0011] Furthermore, the tool holder positioning sleeve has a clamping hole and a sensor through hole.
[0012] Furthermore, a tool handle recognition sensor is embedded within the sensor perforation, with its first end facing directly downwards. The tool handle recognition sensor is used to detect whether a gripper to be grasped is located directly below.
[0013] Furthermore, a throttle valve for adjusting the cylinder extension and retraction speed is provided on the outside of the guide rod cylinder.
[0014] (III) Beneficial Effects
[0015] This utility model integrates a guide rod cylinder, a wedge-shaped movable slider, a two-way horizontal clamp, and a gripping claw. Through ingenious design, the tool gripping action can be automatically, accurately, and efficiently completed by several simple mechanisms working together. The installation accuracy is high and will not affect the subsequent tool installation process. It not only greatly improves gripping efficiency but also saves time and labor costs. Attached Figure Description
[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.
[0017] Figure 1 This is a front view of a tool gripper according to the present invention;
[0018] Figure 2 This is a perspective view of a tool gripper according to the present invention;
[0019] Figure 3 This is a cross-sectional view of a tool gripper according to the present invention;
[0020] The accompanying reference numerals are as follows:
[0021] 1. Guide rod cylinder; 2. Guide rod; 3. Gripper cylinder washer; 4. Fixed end seat; 5. Movable opening; 6. Tool holder positioning sleeve; 7. Bidirectional horizontal clamp; 8. Upper cavity; 9. Wedge-shaped bevel; 10. Wedge-shaped movable slider; 11. Gripping gripper; 12. Lower clamping part; 13. Arc mating surface; 14. Clamping jaw; 15. Clamping hole; 16. Sensor through hole; 17. Tool holder identification sensor; 18. Throttling valve. Detailed Implementation
[0022] 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.
[0023] In the description of this application, it should be understood that the terms "thickness", "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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 application.
[0024] Please see Figures 1-3 This utility model provides a technical solution: a tool gripper, including a guide rod cylinder (1), the guide rod (2) of the guide rod cylinder (1) is connected to a gripper cylinder washer (3). A fixed end seat (4) is fixedly connected to the guide rod side of the guide rod cylinder (1), and a movable opening (5) is provided in the center of the fixed end seat (4) for the guide rod (2) and the gripper cylinder washer (3) to pass through. A tool holder positioning sleeve (6) and an openable bidirectional horizontal clamp (7) are installed at the lower end of the fixed end seat (4). The bidirectional horizontal clamp (7) is located on both sides of the gripper cylinder washer (3) and is covered in the upper cavity of the tool holder positioning sleeve (6). A wedge-shaped cutting slope (9) is provided on the inner side of the bidirectional horizontal clamp (7), and a wedge-shaped movable slider (10) is placed on the wedge-shaped cutting slope (9). The wedge-shaped movable slider (10) is connected to the gripper cylinder washer (3). A gripping jaw (11) is installed on the outside of the bidirectional horizontal clamp (7). When gripping a tool, the tool holder identification sensor (17) first detects whether there is a tool below. After confirming that there is a tool to be gripped, the guide rod cylinder (1) drives the guide rod (2) to move upward. The gripper cylinder washer (3) then drives the wedge-shaped movable slider (10) to move upward to drive the bidirectional horizontal clamp (7) to open towards both sides of the gripping jaw (11), thereby opening the bidirectional horizontal clamp (7) and the gripping jaw (11). When the jaw (14) of the tool gripper descends to be flush with the gripping part above the tool, the guide rod cylinder (1) drives the guide rod (2) to move downward, and the gripper cylinder washer (3) then drives the wedge-shaped movable slider (10) to move downward to make the bidirectional horizontal clamp (7) move inward, so that the jaw (14) fits with the gripping part, thereby completing the gripping jaw (11) gripping the tool.
[0025] Preferably, the tool holder positioning sleeve (6) includes a lower clamping part (12), and the inner side of the lower clamping part (12) is provided with an arc-shaped mating surface that matches the shape of the upper part of the tool holder.
[0026] Preferably, the tool holder positioning sleeve (6) is bolted to the fixed end seat (4).
[0027] Preferably, the gripping jaws (14) of the gripping claws (11) are arc-shaped.
[0028] Preferably, the tool holder positioning sleeve (6) has a clamping hole (15) and a sensor through hole (16).
[0029] Preferably, a handle recognition sensor (17) is embedded in the sensor perforation (16), with the detection end face of the handle recognition sensor (17) facing directly downwards. The handle recognition sensor (17) is used to identify whether there is a gripper to be grasped directly below.
[0030] Preferably, a throttle valve (18) for adjusting the extension and retraction speed of the cylinder is provided on the outside of the guide rod cylinder (1).
[0031] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A tool gripper, characterized in that, Includes a guide rod cylinder (1), the guide rod (2) of which is connected to a gripper cylinder washer (3); a fixed end seat (4) is fixedly connected to the guide rod side of the guide rod cylinder (1), and the fixed end seat (4) has a movable opening (5) in the center for the guide rod (2) and the gripper cylinder washer (3) to pass through; a tool holder positioning sleeve (6) and an openable bidirectional horizontal clamp (7) are installed at the lower end of the fixed end seat (4); the bidirectional water... The flat clamp (7) is located on both sides of the gripper cylinder gasket (3) and is covered in the upper cavity of the tool holder positioning sleeve (6); the inner side of the bidirectional horizontal clamp (7) is provided with a wedge-shaped cutting slope (9), and a wedge-shaped movable slider (10) is placed on the wedge-shaped cutting slope (9); the wedge-shaped movable slider (10) is connected to the gripper cylinder gasket (3); a gripping jaw (11) is installed on the outer side of the bidirectional horizontal clamp (7).
2. The tool gripper according to claim 1, characterized in that: The tool handle positioning sleeve (6) includes a lower clamping part (12), and the inner side of the lower clamping part (12) is provided with an arc-shaped mating surface that matches the shape of the upper part of the tool handle.
3. A tool gripper according to claim 1, characterized in that: The tool holder positioning sleeve (6) is bolted to the fixed end seat (4).
4. A tool gripper according to claim 1, characterized in that: The gripper (14) of the gripper (11) has an arc-shaped end face.
5. A tool gripper according to claim 1, characterized in that: The tool holder positioning sleeve (6) has a clamping hole (15) and a sensor through hole (16).
6. A tool gripper according to claim 5, characterized in that: A handle recognition sensor (17) is embedded in the sensor perforation (16), and the detection end face of the handle recognition sensor (17) faces directly downward; the handle recognition sensor (17) is used to identify whether there is a gripper to be grasped directly below.
7. A tool gripper according to claim 1, characterized in that: A throttle valve (18) for adjusting the extension and retraction speed of the cylinder is provided on the outside of the guide rod cylinder (1).