High-precision positioning and clamping mechanism of numerically controlled lathe

Abstract

The utility model discloses a numerically controlled lathe high-precision positioning and clamping mechanism which is characterized in that the upper surface of a bottom plate is fixedly connected with a surrounding plate, the right surface of the surrounding plate is fixedly connected with a motor, the output end of the motor is fixedly connected with a lead screw, the side surface of the lead screw is movably connected with a movable plate, and the upper surface of the movable plate is fixedly connected with a positioning seat; limiting grooves are formed in the side inner walls of the positioning seats, limiting springs are fixedly connected to the side inner walls of the limiting grooves, telescopic guide rods are fixedly connected to the side inner walls of the limiting grooves, and limiting plates are fixedly connected to the ends, away from the side inner walls of the limiting grooves, of the limiting springs and the telescopic guide rods; and hydraulic telescopic rods are fixedly connected into the mounting blocks, clamping plates are fixedly connected to the ends, away from the mounting blocks, of the hydraulic telescopic rods, and through the devices, the universality and flexibility of the equipment are improved.

Description

Technical Field

[0001] This utility model relates to the technical field of positioning and clamping mechanisms for lathes, and in particular to a high-precision positioning and clamping mechanism for CNC lathes. Background Technology

[0002] With the continuous development of the manufacturing industry, the requirements for machining accuracy are becoming increasingly stringent. Especially in fields such as aerospace, automobile manufacturing, and precision instruments, there are extremely high requirements for the machining accuracy of workpieces. Therefore, high-precision positioning and clamping mechanisms are needed to ensure the positional stability and accuracy of workpieces during the machining process. Traditional mechanisms may cause workpieces to move or shift during machining due to insufficient or uneven clamping force. Utility Model Content

[0003] The purpose of this utility model is to solve at least one of the technical problems existing in the prior art, and to provide a high-precision positioning and clamping mechanism for CNC lathes. By setting a preliminary positioning and limiting mechanism consisting of a limiting spring and a telescopic guide rod inside the positioning seat, and setting a clamping plate supported by a hydraulic telescopic rod above the positioning seat for final workpiece fixation, the secondary precise positioning of the workpiece can be achieved, ensuring that the workpiece will not move or deviate due to vibration or external force during the processing, which is beneficial to improving the versatility and flexibility of the equipment.

[0004] This utility model also provides a high-precision positioning and clamping mechanism for CNC lathes, comprising: a base plate, a surrounding plate fixedly connected to the upper surface of the base plate, a motor fixedly connected to the right surface of the surrounding plate, a lead screw fixedly connected to the output end of the motor, a movable plate movably connected to the side surface of the lead screw, a positioning seat fixedly connected to the upper surface of the movable plate, a limit groove provided on the inner side wall of the positioning seat, a limit spring fixedly connected to the inner side wall of the limit groove, a telescopic guide rod fixedly connected to the inner side wall of the limit groove, a limit plate fixedly connected to the end of the limit spring and the telescopic guide rod away from the inner side wall of the limit groove, a mounting block fixedly connected to the upper surface of the positioning seat, a hydraulic telescopic rod fixedly connected inside the mounting block, and a clamping plate fixedly connected to the end of the hydraulic telescopic rod away from the mounting block. This device improves the versatility and flexibility of the equipment.

[0005] According to the high-precision positioning and clamping mechanism for CNC lathes described in this utility model, the center of the positioning seat is provided with a positioning hole, and the limiting groove is interconnected with the positioning hole. The above device is beneficial for providing workpiece positioning.

[0006] According to the high-precision positioning and clamping mechanism for CNC lathes described in this utility model, support rods are fixedly connected to the left and right inner walls of the enclosure plate, and the support rods penetrate the moving plate. Through the above device, it is beneficial to provide precise guidance for the moving plate.

[0007] According to the high-precision positioning and clamping mechanism for CNC lathes described in this utility model, the lead screw passes through the right surface of the enclosure and extends to the right inner wall of the enclosure. This device is beneficial to the precise transmission of the lead screw.

[0008] According to the high-precision positioning and clamping mechanism for CNC lathes described in this utility model, a limiting hole is provided on the right inner wall of the enclosure, and the end of the lead screw away from the motor is located inside the limiting hole. The above device helps to prevent the lead screw from deviating.

[0009] According to the high-precision positioning and clamping mechanism for CNC lathes described in this utility model, the clamping plates are interlocked and located directly above the limiting plate. This device helps to improve the accuracy and stability of clamping.

[0010] According to the high-precision positioning and clamping mechanism for CNC lathes described in this utility model, the telescopic guide rod is located at the center of the limiting spring and is located inside the positioning seat. The above device is beneficial for flexibly positioning the workpiece.

[0011] According to the high-precision positioning and clamping mechanism for CNC lathes described in this utility model, the lower surface of the base plate is provided with a ventilation opening, and a support column is fixedly connected to the lower surface of the base plate. The above devices facilitate airflow inside the device.

[0012] Beneficial effects

[0013] 1. Compared with the existing technology, the high-precision positioning and clamping mechanism of this CNC lathe can achieve secondary precise positioning of the workpiece by setting a preliminary positioning and limiting mechanism composed of a limiting spring and a telescopic guide rod inside the positioning seat, and a clamping plate supported by a hydraulic telescopic rod above the positioning seat for final workpiece fixation. This ensures that the workpiece will not move or deviate due to vibration or external force during processing, which is beneficial to improving the versatility and flexibility of the equipment.

[0014] 2. Compared with existing technologies, this high-precision positioning and clamping mechanism for CNC lathes achieves precise linear movement of the moving plate by driving the lead screw with a motor, thereby driving the workpiece fixed on the positioning seat to achieve precise positioning. This ensures stability during the movement process, reduces errors caused by transmission instability, and helps improve processing efficiency. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0016] Figure 1 This is a three-dimensional structural diagram of the high-precision positioning and clamping mechanism for CNC lathes of this utility model;

[0017] Figure 2This is a cross-sectional structural diagram of the high-precision positioning and clamping mechanism for CNC lathes of this utility model;

[0018] Figure 3 This is an internal structural diagram of the high-precision positioning and clamping mechanism for CNC lathes of this utility model;

[0019] Figure 4 This utility model relates to a high-precision positioning and clamping mechanism for CNC lathes. Figure 3 Enlarged view of point C in the middle.

[0020] Legend:

[0021] 1. Base plate; 2. Enclosure panel; 3. Support rod; 4. Movable plate; 5. Column; 6. Positioning seat; 7. Mounting block; 8. Clamping plate; 9. Motor; 10. Lead screw; 11. Limiting groove; 12. Limiting plate; 13. Ventilation opening; 14. Hydraulic telescopic rod; 15. Telescopic guide rod; 16. Limiting spring. Detailed Implementation

[0022] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0023] Reference Figure 1-4 This utility model discloses a high-precision positioning and clamping mechanism for a CNC lathe, comprising: a base plate 1, which serves as the supporting foundation for the entire mechanism, bearing and fixing all other components; a surrounding plate 2 fixedly connected to the upper surface of the base plate 1, forming a closed or semi-closed space to protect the internal mechanical components; a motor 9 fixedly connected to the right surface of the surrounding plate 2 to provide power and drive a lead screw 10 to rotate; the output end of the motor 9 is fixedly connected to the lead screw 10 to convert the rotational motion of the motor 9 into the linear motion of a moving plate 4; the lead screw 10 penetrates the right surface of the surrounding plate 2 and extends to the right inner wall of the surrounding plate 2; a limit hole is provided on the right inner wall of the surrounding plate 2 to limit the axial movement range of the lead screw 10; the end of the lead screw 10 away from the motor 9 is located inside the limit hole to prevent the lead screw 10 from deviating; a moving plate 4 is movably connected to the side surface of the lead screw 10 to achieve precise horizontal movement; and support rods 3 are fixedly connected to the left and right inner walls of the surrounding plate 2 to provide stable guidance and support for the moving plate 4; the support rods 3 penetrate the moving plate 4.

[0024] A positioning seat 6 is fixedly connected to the upper surface of the movable plate 4 for placing and positioning the workpiece. A positioning hole is provided in the center of the positioning seat 6 to provide space for placing the workpiece. A limiting groove 11 is provided on the inner side wall of the positioning seat 6 for installing a limiting spring 16 and a telescopic guide rod 15. The limiting groove 11 communicates with the positioning hole. A limiting spring 16 is fixedly connected to the inner side wall of the limiting groove 11 to provide elasticity to the limiting plate 12, allowing it to tightly fit the workpiece surface. A telescopic guide rod 15 is fixedly connected to the inner side wall of the limiting groove 11 to provide stable guidance for the limiting plate 12, preventing it from shifting or tilting during movement. The telescopic guide rod 15 is located at the center of the limiting spring 16 and is located inside the positioning seat 6. A limiting plate 12 is fixedly connected to the end of the telescopic guide rod 15 away from the inner wall of the limiting groove 11 to achieve preliminary positioning of the workpiece. An installation block 7 is fixedly connected to the upper surface of the positioning seat 6 to provide an installation position for the hydraulic telescopic rod 14. The hydraulic telescopic rod 14 is fixedly connected inside the installation block 7 to achieve telescopic movement and drive the clamping plate 8 to clamp or release the workpiece. The clamping plate 8 is fixedly connected to the end of the hydraulic telescopic rod 14 away from the installation block 7 to ensure that the workpiece is firmly clamped. The clamping plates 8 are staggered and located directly above the limiting plate 12. A vent 13 is provided on the lower surface of the base plate 1 to maintain air circulation inside the mechanism. A support column 5 is fixedly connected to the lower surface of the base plate 1 to support the entire mechanism and maintain stability.

[0025] Working principle: The positioning seat 6 is fixedly connected to the upper surface of the moving plate 4, and a positioning hole is set in its center to perform preliminary positioning of the workpiece. Since the limiting groove 11 is interconnected with the positioning hole, and a limiting spring 16 and a telescopic guide rod 15 are set inside, when the workpiece is placed in the positioning hole, the limiting plate 12 automatically adjusts its position under the action of the limiting spring 16 and the telescopic guide rod 15 to adapt to the size and shape of the workpiece, thereby achieving preliminary and accurate positioning of the workpiece. A hydraulic telescopic rod 14 is fixedly connected inside the mounting block 7, and a clamping plate 8 is fixedly connected to the end away from the mounting block 7, located directly above the limiting plate 12. When the hydraulic telescopic rod 14 extends, the clamping plates 8 move together. The clamping teeth interlock, and due to the interlocking arrangement of the clamping plates 8, a more uniform and stable clamping force can be provided, ensuring that the workpiece will not move or vibrate during processing. When the motor 9 starts, its output end drives the lead screw 10 to rotate. The lead screw 10 passes through the enclosure plate 2 and extends to its right inner wall. It is movably connected to the moving plate 4 through a thread. The rotational motion of the lead screw 10 is converted into the linear motion of the moving plate 4, ensuring that the moving plate 4 can move accurately in the horizontal direction. The support rod 3 is fixedly connected to the left and right inner walls of the enclosure plate 2 and passes through the moving plate 4. The support rod 3 plays a guiding and supporting role, ensuring that the moving plate 4 remains stable and accurate during movement.

[0026] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A high-precision positioning and clamping mechanism for a CNC lathe, characterized in that, include: A base plate (1) is provided, and a surrounding plate (2) is fixedly connected to the upper surface of the base plate (1). A motor (9) is fixedly connected to the right surface of the surrounding plate (2). A lead screw (10) is fixedly connected to the output end of the motor (9). A movable plate (4) is movably connected to the side surface of the lead screw (10). A positioning seat (6) is fixedly connected to the upper surface of the movable plate (4). A limit groove (11) is provided on the inner side wall of the positioning seat (6). A limit spring is fixedly connected to the inner side wall of the limit groove (11). A spring (16) is fixedly connected to the inner side wall of the limiting groove (11), and a telescopic guide rod (15) is fixedly connected to the end of the limiting spring (16) and the telescopic guide rod (15) away from the inner side wall of the limiting groove (11). A limiting plate (12) is fixedly connected to the upper surface of the positioning seat (6), and a mounting block (7) is fixedly connected to the inside of the mounting block (7). A hydraulic telescopic rod (14) is fixedly connected to the inside of the mounting block (7), and a clamping plate (8) is fixedly connected to the end of the hydraulic telescopic rod (14) away from the mounting block (7).

2. The high-precision positioning and clamping mechanism for CNC lathes according to claim 1, characterized in that, The positioning seat (6) has a positioning hole at its center, and the limiting groove (11) is in communication with the positioning hole.

3. The high-precision positioning and clamping mechanism for CNC lathes according to claim 1, characterized in that, The left and right inner walls of the enclosure (2) are fixedly connected with support rods (3), and the support rods (3) pass through the movable plate (4).

4. The high-precision positioning and clamping mechanism for CNC lathes according to claim 1, characterized in that, The lead screw (10) passes through the right surface of the enclosure (2) and extends to the right inner wall of the enclosure (2).

5. The high-precision positioning and clamping mechanism for CNC lathes according to claim 1, characterized in that, The right inner wall of the enclosure (2) is provided with a limiting hole, and the end of the lead screw (10) away from the motor (9) is located inside the limiting hole.

6. The high-precision positioning and clamping mechanism for CNC lathes according to claim 1, characterized in that, The clamps (8) are interlocked and are located directly above the limiting plate (12).

7. The high-precision positioning and clamping mechanism for CNC lathes according to claim 1, characterized in that, The telescopic guide rod (15) is located at the center of the limiting spring (16) and is located inside the positioning seat (6).

8. The high-precision positioning and clamping mechanism for CNC lathes according to claim 1, characterized in that, The lower surface of the base plate (1) is provided with a ventilation opening (13), and a support column (5) is fixedly connected to the lower surface of the base plate (1).

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