CNC high-precision grinding clamping device

Abstract

The utility model relates to a kind of CNC high-precision grinding clamping devices, including pedestal, linear moving mechanism, transverse rotating mechanism, rotary disc and clamping mechanism;The linear moving mechanism is located on the pedestal;The transverse rotating mechanism is located on the linear moving mechanism, and the transverse rotating mechanism does linear moving action under the drive of the linear moving mechanism;The rotary disc is located on the transverse rotating mechanism, and the rotary disc rotates under the drive of the transverse rotating mechanism;The clamping mechanism is located on the rotary disc, and the clamping mechanism includes clamping component and longitudinal rotating component connected with the clamping component, and the clamping component rotates along its axial direction under the drive of the longitudinal rotating component.The utility model can realize that workpiece can linearly move, can make workpiece rotate around rotary disc axis and can make workpiece rotate around its axis, so artificial turning is not needed, stop length is shortened, processing efficiency and processing quality are improved.

Description

Technical Field

[0001] This utility model relates to the field of CNC machining equipment technology, and in particular to a high-precision CNC grinding clamping device. Background Technology

[0002] CNC (Computer Numerical Control) is a type of automated machine tool controlled by a program. It offers advantages such as high machining accuracy, high automation, and high production efficiency.

[0003] In traditional machining processes, cylindrical or tubular workpieces require specific fixtures for clamping before being machined by a CNC machining device. However, existing fixtures only serve to hold and fix the cylindrical or tubular workpieces. After machining one side of the cylindrical or tubular workpiece, it needs to be manually flipped over. This requires time for repositioning, increases downtime, reduces production efficiency, and also reduces machining accuracy and affects machining quality. Utility Model Content

[0004] Therefore, it is necessary to provide a high-precision CNC grinding clamping device to address the problem that existing fixtures only serve to hold and fix cylindrical or tubular workpieces. After machining one side of the cylindrical or tubular workpiece, it is necessary to manually flip it over, which takes time to reposition, increases downtime, reduces production efficiency, and also reduces machining accuracy and affects machining quality.

[0005] A CNC high-precision grinding clamping device includes: Base; A linear motion mechanism, wherein the linear motion mechanism is disposed on the base; A transverse rotation mechanism is mounted on the linear motion mechanism, and the transverse rotation mechanism performs a linear motion under the drive of the linear motion mechanism. A rotating disk, the rotating disk being mounted on the transverse rotating mechanism, the rotating disk rotating under the drive of the transverse rotating mechanism; and A clamping mechanism is provided on the rotary disk. The clamping mechanism includes a clamping component and a longitudinal rotating component connected to the clamping component. The clamping component rotates along its axial direction under the drive of the longitudinal rotating component.

[0006] The aforementioned CNC high-precision grinding clamping device, through the cooperation of the base, linear movement mechanism, transverse movement mechanism, rotary disk, and clamping mechanism, enables the workpiece to move linearly, rotate around the axis of the rotary disk, and rotate around its axis. This eliminates the need for manual flipping, shortens downtime, effectively improves processing efficiency, and avoids the phenomenon of decreased processing accuracy due to repositioning, thus effectively improving processing quality.

[0007] In one embodiment, the linear motion mechanism includes a linear lead screw, a linear lead screw seat, and a linear motion driver. The linear lead screw is rotatably mounted on the base, the linear lead screw seat is threadedly connected to the linear lead screw, the linear motion driver is fixedly mounted on the base, and the linear lead screw is drively connected to the linear motion driver.

[0008] In one embodiment, the linear motion mechanism further includes a linear guide rail, a linear slide block, and a linkage plate. The linear guide rail is fixedly mounted on the base, and there are two linear guide rails. The two linear guide rails are parallel to each other on both sides of the linear screw. The linear slide block is slidably connected to the linear guide rail, and the linkage plate is fixedly connected to both the linear screw base and the linear slide block.

[0009] In one embodiment, the transverse rotation mechanism includes a transverse rotation motor and a rotation platform. The rotation platform is disposed on the linkage plate, the transverse rotation motor is connected to and drives the rotation platform to rotate, and the rotating disk is connected to the rotation platform.

[0010] In one embodiment, the clamping assembly includes a housing, a rotating sleeve, a chuck sleeve, an elastic chuck, a sliding tube, and a push rod. The housing is fixedly connected to the rotating disk. The rotating sleeve is rotatably mounted inside the housing via a bearing. The chuck sleeve is fixedly connected to the rotating sleeve. The elastic chuck passes through the chuck sleeve. The sliding tube slidably passes through the rotating sleeve. The elastic chuck is fixedly connected to the sliding tube. The push rod passes through the sliding tube and is slidable relative to the sliding tube.

[0011] In one embodiment, the elastic chuck has a clamping groove in the axial direction and a plurality of slots are equally spaced in the circumferential direction to form an elastic clamping block at the front end of the elastic chuck. The inner wall of the chuck sleeve is provided with a first pushing slope and the outer wall of the elastic chuck is provided with a second pushing slope. When clamping, the first pushing slope and the second pushing slope cooperate to drive the elastic clamping block to retract inward to clamp the workpiece.

[0012] In one embodiment, the longitudinal rotation assembly includes a worm gear, a worm, and a rotary actuator. The worm gear is fixedly fitted outside the rotating sleeve, the worm meshes with the worm gear, and the rotary actuator is fixedly mounted on the housing. The worm is drively connected to the rotary actuator.

[0013] In one embodiment, the clamping mechanism further includes an opening cylinder, which includes a cylinder body and a piston assembly. The cylinder body is fixedly connected to the outer shell, and the piston assembly is disposed in the cylinder body. The piston divides the internal space of the cylinder body into a front chamber and a rear chamber. The cylinder body is provided with an air inlet and a vent. The air inlet communicates with the front chamber and an external air supply device, and the vent communicates with the rear chamber. The piston assembly is fixedly fitted onto the sliding tube.

[0014] In one embodiment, the piston assembly includes a piston sleeve and a sealing ring. The piston sleeve is fitted onto the sliding tube via a bearing. The piston sleeve is provided with a sealing groove, and the sealing ring is embedded in the sealing groove. The outer wall of the sealing ring abuts against the inner wall of the outer casing.

[0015] In one embodiment, the clamping mechanism further includes a fixing frame and a return spring. The fixing frame is fixedly connected to the housing. The end of the push rod away from the elastic clamp extends out of the fixing frame through the opening cylinder. The return spring is fitted around the push rod. One end of the return spring abuts against the push rod, and the other end of the return spring abuts against the fixing frame. Attached Figure Description

[0016] Figure 1 This is an assembly structure diagram of the CNC high-precision grinding clamping device in one embodiment of the present invention; Figure 2 For example Figure 1 The diagram shows the internal structure of the linear motion mechanism in the CNC high-precision grinding clamping device. Figure 3 For example Figure 1 The diagram shows the assembly structure of the rotary table and clamping mechanism in the CNC high-precision grinding clamping device. Figure 4 For example Figure 1 The diagram shows the internal structure of the clamping mechanism in the CNC high-precision grinding clamping device. Figure 5 for Figure 4 Enlarged view of section A in the middle; Figure 6 For example Figure 1 The diagram shows the structure of the load-bearing component in the CNC high-precision grinding clamping device.

[0017] The meanings of the numbers in the attached diagram are as follows: 100-CNC high-precision grinding clamping device; 10-Base, 20-Linear movement mechanism, 21-Linear lead screw, 22-Linear lead screw seat, 23-Linear movement driver, 24-Linear guide rail, 25-Linear slide, 26-Linkage plate; 30 - Lateral rotation mechanism; 31 - Rotating platform; 32 - Lateral rotation motor; 40 - Rotary disk, 41 - Guide groove, 42 - Slider; 50-Clamping mechanism, 51-Clamping assembly, 511-Housing shell, 512-Rotating sleeve, 513-Chuck sleeve, 514-Elastic chuck, 515-Sliding tube, 516-Push rod, 52-Longitudinal rotation assembly, 521-Worm gear, 522-Rotary actuator, 53-Clamping cylinder, 531-Cylinder body, 5311-Air inlet, 5312-Ventilation hole, 532-Piston assembly, 5321-Piston sleeve, 5322-Sealing ring, 533-Front chamber, 534-Rear chamber, 54-Fixed frame, 55-Bearing assembly, 551-Connecting seat, 552-Bearing block, 553-Guide rod. Detailed Implementation

[0018] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0019] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0021] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0022] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0023] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0024] Please see Figure 1The present invention discloses a CNC high-precision grinding clamping device 100, comprising a base 10, a linear motion mechanism 20, a transverse rotation mechanism 30, a rotary disk 40, and a clamping mechanism 50. The linear motion mechanism 20 is disposed on the base 10, the transverse rotation mechanism 30 is disposed on the linear motion mechanism 20, and the transverse rotation mechanism 30 performs linear motion under the drive of the linear motion mechanism 20. The rotary disk 40 is disposed on the transverse rotation mechanism 30, and the rotary disk 40 rotates under the drive of the transverse rotation mechanism 30. The clamping mechanism 50 is disposed on the rotary disk 40.

[0025] Please see Figure 2 The linear motion mechanism 20 includes a linear lead screw 21, a linear lead screw seat 22, and a linear motion driver 23. The linear lead screw 21 is rotatably mounted on the base 10. The linear lead screw seat 22 is threadedly connected to the linear lead screw 21. The linear motion driver 23 is fixedly mounted on the base 10, and the linear lead screw 21 is drive-connected to the linear motion driver 23.

[0026] Please see Figure 2 The linear movement mechanism 20 further includes a linear guide rail 24, a linear slide block 25, and a linkage plate 26. The linear guide rail 24 is fixedly mounted on the base 10. There are two linear guide rails 24, which are parallel to each other on both sides of the linear lead screw 21. The linear slide block 25 is slidably connected to the linear guide rail 24. The linkage plate 26 is fixedly connected to both the linear lead screw seat 22 and the linear slide block 25.

[0027] Please see Figure 1 The transverse rotation mechanism 30 includes a transverse rotation motor 32 and a rotation platform 31. The rotation platform 31 is mounted on the linkage plate 26. The transverse rotation motor 32 is connected to and drives the rotation platform 31 to rotate. The rotating disk 40 is connected to the rotation platform 31.

[0028] Please see Figure 3 and Figure 4The clamping assembly 51 includes a housing 511, a rotating sleeve 512, a chuck sleeve 513, an elastic chuck 514, a sliding tube 515, and a push rod 516. The housing 511 is fixedly connected to the rotating disk 40. The rotating sleeve 512 is rotatably mounted inside the housing 511 via bearings. The chuck sleeve 513 is fixedly connected to the rotating sleeve 512. The elastic chuck 514 passes through the chuck sleeve 513. The elastic chuck 514 has a clamping groove in its axial direction and several slots are equally spaced in its circumferential direction to form an elastic clamping block at the front end of the elastic chuck 514. The inner wall of the chuck sleeve 513 is provided with a first pushing inclined surface, and the outer wall of the elastic chuck 514 is provided with a second pushing inclined surface. During clamping, the first pushing inclined surface and the second pushing inclined surface cooperate to drive the elastic clamping block to contract inward to clamp the workpiece.

[0029] Please see Figure 3 and Figure 4 The sliding tube 515 is slidably inserted into the rotating sleeve 512, the elastic clamp 514 is fixedly connected to the sliding tube 515, and the push rod 516 is inserted into the sliding tube 515 and can slide relative to the sliding tube 515.

[0030] Please see Figure 3 and Figure 4 The longitudinal rotating assembly 52 includes a worm gear 521, a worm, and a rotary driver 522. The worm gear 521 is fixedly fitted onto the outside of the rotating sleeve 512. The worm meshes with the worm gear 521. The rotary driver 522 is fixedly mounted on the housing 511. The worm and the rotary driver 522 are connected in a transmission manner.

[0031] Please see Figure 5 The clamping mechanism 50 further includes an opening cylinder 53, which includes a cylinder body 531 and a piston assembly 532. The cylinder body 531 is fixedly connected to the outer shell 511, and the piston assembly 532 is disposed inside the cylinder body 531. The piston divides the internal space of the cylinder body 531 into a front chamber 533 and a rear chamber 534. The cylinder body 531 is provided with an air inlet 5311 and a vent 5312. The air inlet 5311 communicates with the front chamber 533 and is connected to an external air supply device. The vent 5312 communicates with the rear chamber 534. The piston assembly 532 is fixedly fitted onto the sliding tube 515. The piston assembly 532 includes a piston sleeve 5321 and a sealing ring 5322. The piston sleeve 5321 is fitted onto the sliding tube 515 via a bearing. The piston sleeve 5321 is provided with a sealing groove. The sealing ring 5322 is embedded in the sealing groove. The outer wall of the sealing ring 5322 abuts against the inner wall of the outer shell 511.

[0032] Please see Figure 3 and Figure 4 The clamping mechanism 50 further includes a fixing frame 54 and a return spring. The fixing frame 54 is fixedly connected to the outer shell 511. The end of the push rod 516 away from the elastic clamp 514 passes through the opening cylinder 53 and extends out of the fixing frame 54. The return spring is fitted on the outside of the push rod 516. One end of the return spring abuts against the push rod 516, and the other end of the return spring abuts against the fixing frame 54.

[0033] Please see Figure 4 and Figure 6 The CNC high-precision grinding clamping device 100 further includes a bearing component 55, which is slidably disposed on the rotary disk 40. The bearing component 55 includes a connecting seat 551, a fixing screw, a bearing block 552, a guide rod 553, and a bearing elastic element. The rotary disk 40 is provided with a guide groove 41, and a slider 42 is slidably disposed in the guide groove 41. The slider 42 is provided with a screw hole, and the connecting seat 551 is provided with a through hole. The fixing screw passes through the through hole and engages with the screw hole to fix the connecting seat 551 and the slider 42. When the lower end of the fixing screw abuts against the guide groove 41, the bearing component 55 is fixed on the rotary disk 40. The guide rod 553 is slidably connected to the connecting seat 551, and the bearing block 552 is fixedly connected to the guide rod 553. The bearing elastic element is fitted onto the guide rod 553, with its upper end abutting against the bearing block 552 and its lower end abutting against the connecting seat 551. A placement groove is provided at the upper end of the bearing block 552. Through the cooperation of the bearing elastic element and the guide rod 553, the workpiece has a certain buffering capacity, which can prevent workpiece breakage during processing and effectively improve processing quality.

[0034] The working process of the CNC high-precision grinding clamping device 100 in this embodiment is as follows: During operation, one end of the workpiece is placed in the clamping groove, and an external air supply device supplies air. The gas enters the front chamber 533 through the air inlet 5311. The air pressure drives the piston assembly 532 to move backward along the sliding tube 515, and the elastic chuck 514 moves backward relative to the chuck sleeve 513. The first and second pushing inclined surfaces cooperate to drive the elastic clamping block to retract inward to clamp the workpiece. The connecting seat 551 moves along the guide groove 41 until the end of the workpiece away from the elastic chuck 514 is placed in the placement groove. Then, the lower end of the fixing screw abuts against the guide groove 41 to fix the connecting seat 551 to the rotary disk 40. During the machining process, the linear motion driver 23 drives the workpiece to move along the linear guide rail 24, the transverse rotary motor 32 drives the workpiece to rotate around the axis of the rotary disk 40, and the rotary driver 522 drives the workpiece to rotate around its axis.

[0035] The beneficial effects of this utility model are as follows: Through the cooperation of the base 10, the linear movement mechanism 20, the transverse movement mechanism, the rotary disk 40 and the clamping mechanism 50, the workpiece can move linearly, rotate around the axis of the rotary disk 40 and rotate around its axis. This eliminates the need for manual flipping, shortens downtime, effectively improves processing efficiency, and avoids the phenomenon of decreased processing accuracy due to repositioning, thus effectively improving processing quality.

[0036] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0037] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A CNC high-precision grinding clamping device, characterized in that, include: Base; A linear motion mechanism, wherein the linear motion mechanism is disposed on the base; A transverse rotation mechanism is mounted on the linear motion mechanism, and the transverse rotation mechanism performs a linear motion under the drive of the linear motion mechanism. A rotating disk is mounted on the transverse rotating mechanism and rotates under the drive of the transverse rotating mechanism; as well as A clamping mechanism is provided on the rotary disk. The clamping mechanism includes a clamping component and a longitudinal rotating component connected to the clamping component. The clamping component rotates along its axial direction under the drive of the longitudinal rotating component.

2. The CNC high precision grinding clamp device according to claim 1, characterized in that, The linear motion mechanism includes a linear lead screw, a linear lead screw seat, and a linear motion driver. The linear lead screw is rotatably mounted on the base, the linear lead screw seat is threadedly connected to the linear lead screw, and the linear motion driver is fixedly mounted on the base. The linear lead screw is driven by the linear motion driver.

3. The CNC high precision grinding clamp device according to claim 2, characterized in that, The linear motion mechanism further includes a linear guide rail, a linear slide block, and a linkage plate. The linear guide rail is fixedly mounted on the base. There are two linear guide rails, which are parallel to each other on both sides of the linear screw. The linear slide block is slidably connected to the linear guide rail. The linkage plate is fixedly connected to both the linear screw base and the linear slide block.

4. The CNC high precision grinding clamp device according to claim 3, characterized in that, The transverse rotation mechanism includes a transverse rotation motor and a rotation platform. The rotation platform is mounted on the linkage plate. The transverse rotation motor is connected to and drives the rotation platform to rotate. The rotating disk is connected to the rotation platform.

5. The CNC high precision grinding clamp device according to claim 4, characterized in that, The clamping assembly includes a housing, a rotating sleeve, a chuck sleeve, an elastic chuck, a sliding tube, and a push rod. The housing is fixedly connected to the rotating disk. The rotating sleeve is rotatably mounted inside the housing via bearings. The chuck sleeve is fixedly connected to the rotating sleeve. The elastic chuck passes through the chuck sleeve. The sliding tube slidably passes through the rotating sleeve. The elastic chuck is fixedly connected to the sliding tube. The push rod passes through the sliding tube and can slide relative to the sliding tube.

6. The CNC high precision grinding clamp device according to claim 5, characterized in that, The elastic chuck has a clamping groove in the axial direction and several slots are equally spaced in the circumferential direction to form an elastic clamping block at the front end of the elastic chuck. The inner wall of the chuck sleeve is provided with a first pushing slope and the outer wall of the elastic chuck is provided with a second pushing slope. When clamping, the first pushing slope and the second pushing slope cooperate to drive the elastic clamping block to retract inward to clamp the workpiece.

7. The CNC high precision grinding clamp device according to claim 5, characterized in that, The longitudinal rotating assembly includes a worm gear, a worm, and a rotary actuator. The worm gear is fixedly fitted outside the rotating sleeve, the worm meshes with the worm gear, and the rotary actuator is fixedly mounted on the housing. The worm and the rotary actuator are connected in a transmission manner.

8. The CNC high precision grinding clamp device according to claim 7, characterized in that, The clamping mechanism further includes an opening cylinder, which includes a cylinder body and a piston assembly. The cylinder body is fixedly connected to the outer shell, and the piston assembly is disposed in the cylinder body. The piston divides the internal space of the cylinder body into a front chamber and a rear chamber. The cylinder body is provided with an air inlet and a vent. The air inlet communicates with the front chamber and an external air supply device, and the vent communicates with the rear chamber. The piston assembly is fixedly fitted onto the sliding tube.

9. The CNC high precision grinding clamp device according to claim 8, characterized in that, The piston assembly includes a piston sleeve and a sealing ring. The piston sleeve is fitted onto the sliding tube via a bearing. The piston sleeve is provided with a sealing groove, and the sealing ring is embedded in the sealing groove. The outer wall of the sealing ring abuts against the inner wall of the outer shell.

10. The CNC high precision grinding clamp device according to claim 9, characterized in that, The clamping mechanism further includes a fixed frame and a return spring. The fixed frame is fixedly connected to the outer shell. The end of the push rod away from the elastic clamp extends out of the fixed frame through the opening cylinder. The return spring is fitted outside the push rod. One end of the return spring abuts against the push rod, and the other end of the return spring abuts against the fixed frame.

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