Cutter clamping and replacing structure for numerical control grinding machine

Abstract

The utility model relates to the technical field of numerical control grinding machines, in particular to a cutter clamping and replacing structure for a numerical control grinding machine, which comprises a numerical control grinding machine shell, a first grinding device is mounted on one side of the inner wall of the numerical control grinding machine shell, and a second grinding device is mounted on the other side of the inner wall of the numerical control grinding machine shell. An air cylinder is installed on the inner wall of the numerical control grinding machine shell and located above the second grinding equipment, a first motor is installed at the output end of the air cylinder, and a positioning replacement mechanism is installed at the driving end of the first motor and comprises multiple sets of arc-shaped clamping plates, a positioning placement assembly, a sliding adjusting assembly and an inflation assembly. The positioning placement assembly is used for replacing arc-shaped clamping plates with different sizes; the tool clamping device is simple in structure and convenient to operate, tool bodies of different models and sizes can be clamped to be assembled according to actual requirements during work, and the practicability during use is further improved.

Description

Technical Field

[0001] This utility model relates to the field of CNC grinding machine technology, specifically to a tool clamping and changing structure for a CNC grinding machine. Background Technology

[0002] CNC grinding machines are machine tools that use grinding wheels to grind the surface of workpieces. Most grinding machines use high-speed rotating grinding wheels for grinding, while a few use other grinding wheels and free abrasives such as oilstones, abrasive belts, honing machines, ultra-precision machining tools, belt grinders, lapping machines, and polishing machines. CNC grinding machines include CNC surface grinders, CNC centerless grinders, CNC internal and external cylindrical grinders, CNC vertical universal grinders, CNC coordinate grinders, CNC profile grinders, etc. However, existing CNC grinding machine tool clamping and changing structures have the following problems in use: Traditional tool changing clamps require operators to remove and replace the tool, which requires a lot of manual labor, resulting in low work efficiency, long operation time, and low practicality.

[0003] To address the aforementioned technical problems, Chinese Patent No. CN222449807U discloses a tool clamping and changing structure for a CNC grinding machine, comprising a CNC grinding machine housing, a movable shaft, and a protective frame. The movable shaft is mounted inside the CNC grinding machine housing via bearings, and a protective frame is mounted on the outer wall of the movable shaft. An arc-shaped clamping block is mounted on the outer wall of the protective frame. An air pump is installed inside the arc-shaped clamping block, and a connecting pipe is installed at the output end of the air pump. An arc-shaped pneumatic clamping block is mounted on one side of the arc-shaped clamping block.

[0004] While the aforementioned existing technical solutions can clamp and rotate CNC grinding machine tool bodies, the arc-shaped clamping block is directly mounted on the outer wall of the protective frame, making it difficult to disassemble and replace. Furthermore, different tool models have different dimensions. If the arc surface size of the tool is larger than that of the arc surface size of the arc-shaped clamping block, there will be a large gap between the tool and the arc-shaped clamping block, and the center of the tool will also shift. The arc-shaped pneumatic clamping block cannot be moved to align with the center of the tool for pneumatic clamping, which has certain limitations in use and is not practical enough. Utility Model Content

[0005] The purpose of this utility model is to provide a tool clamping and replacement structure for CNC grinding machines, in order to solve the problems mentioned in the background art. The arc-shaped clamping block of the tool clamping and replacement structure is directly installed on the outer wall of the protective frame, making it difficult to disassemble and replace. Different tool models have different sizes. If the arc surface size of the tool is larger than the arc surface size of the arc-shaped clamping block, there will be a lot of gap between the tool and the arc-shaped clamping block, and the center of the tool will also be offset. The arc-shaped pneumatic clamping block cannot be moved to align with the center of the tool for air clamping. Therefore, it has certain limitations in use and its practicality is insufficient.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A tool clamping and changing structure for a CNC grinding machine includes a CNC grinding machine housing. A first grinding device is installed on one side of the inner wall of the CNC grinding machine housing, and a second grinding device is installed on the other side of the inner wall of the CNC grinding machine housing. A cylinder is installed on the inner wall of the CNC grinding machine housing above the second grinding device. A first motor is installed at the output end of the cylinder, and a positioning and replacement mechanism is installed at the drive end of the first motor. The positioning and replacement mechanism includes multiple sets of arc-shaped clamps, a positioning and placement component, a sliding adjustment component, and an inflation component. The positioning and placement component is used to replace arc-shaped clamps of different sizes, and the sliding adjustment component is used to cooperate with the inflation component and the arc-shaped clamps to position and clamp the tool body.

[0008] As a preferred embodiment of this utility model, the positioning and placement assembly includes a rotating frame installed on the drive end of the first motor. Multiple sets of fixed seats are arranged on the outer wall of the rotating frame. One side of the fixed seat is in contact with the outer wall of the arc-shaped clamp. An extension groove is provided at one end of the fixed seat. A groove is provided on one side of the extension groove inside the fixed seat. A protrusion is slidably connected to the inner side of the groove.

[0009] As a preferred embodiment of this utility model, two sets of first springs are arranged and installed between one side of the convex plate and the inner wall of the groove. The cross-section of the groove is L-shaped. A spring-loaded groove is provided on one side of the outer wall of the convex plate. A linkage rod is rotatably connected to the inner side of the spring-loaded groove. A spring-loaded plate is installed on the outer wall of the linkage rod. An extension plate that is slidably connected to the extension is installed on one side of the arc-shaped clamping plate. Inclined surfaces are provided at the opposite ends of the extension plate and the convex plate. An abutment groove is provided on the other side of the extension plate. A rubber pad is embedded and installed on the outer wall of the extension plate on one side of the abutment groove.

[0010] As a preferred embodiment of this utility model, a groove extending into the inner side of the extension slot is provided on one side of the outer wall of the fixed base, the linkage rod is slidably connected to the groove, and a torsion ring is installed at one end of the linkage rod extending to the outer side of the fixed base.

[0011] As a preferred embodiment of this utility model, the sliding adjustment assembly includes adjustment cylinders installed at both ends of the outer wall of the fixed base. A threaded rod is rotatably connected to the inner side of the adjustment cylinder, and an adjustment plate is threadedly connected to the outer side of the threaded rod. The adjustment plate is slidably connected to the inner side of the adjustment cylinder. A second motor is installed at one end of the adjustment cylinder, and the driving end of the second motor extends to the inner side of the adjustment cylinder and is fixedly connected to one end of the threaded rod.

[0012] As a preferred embodiment of this utility model, a sliding sleeve is slidably connected to one end of the outer wall of the adjusting plate, and a threaded hole extending to the outer wall of the adjusting plate is opened on one side of the outer wall of the sliding sleeve. A bolt is threadedly connected to the inner side of the threaded hole, and a rubber post is installed at the end of the bolt near the outer wall of the adjusting plate.

[0013] As a preferred embodiment of this utility model, the inflation assembly includes multiple air pumps mounted on the surface of the rotating frame. Two sets of corrugated pipes are installed at the air delivery end of the air pumps, and a pneumatic clamping block is installed at the other end of the corrugated pipes. One side of the pneumatic clamping block is fixedly connected to one side of the sliding sleeve, and the cross-section of the pneumatic clamping block is V-shaped.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] In this invention, by replacing the arc-shaped clamps of different sizes with positioning and placement components, and by using the sliding adjustment component in conjunction with the inflation component and the arc-shaped clamps to position and clamp the tool body, the structure is simple and easy to operate. Different sizes of tool bodies can be clamped and assembled according to the actual needs of the work, which further improves the practicality during use. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a partial three-dimensional sectional view of the rotating frame of this utility model;

[0018] Figure 3 This is a partial cross-sectional view of the fixing base of this utility model.

[0019] In the diagram: 1. CNC grinding machine housing; 2. Second grinding device; 3. Cylinder; 4. First motor; 5. Torsion ring; 6. Second motor; 7. Arc-shaped clamping plate; 8. Rotating frame; 9. Fixed seat; 10. Protruding plate; 11. Linkage rod; 12. Spring pressure plate; 13. Extension plate; 14. Rubber pad; 15. Sliding sleeve; 16. Bolt; 17. Rubber column; 18. Air pump; 19. Corrugated pipe; 20. Pneumatic clamping block; 21. Adjusting cylinder; 22. Threaded rod; 23. Adjusting plate. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0021] Example: Please refer to Figures 1-3 This utility model provides a technical solution:

[0022] A tool clamping and changing structure for a CNC grinding machine includes a CNC grinding machine housing 1. A first grinding device is installed on one side of the inner wall of the CNC grinding machine housing 1, and a second grinding device 2 is installed on the other side of the inner wall of the CNC grinding machine housing 1. A cylinder 3 is installed on the inner wall of the CNC grinding machine housing 1 above the second grinding device 2. A first motor 4 is installed at the output end of the cylinder 3, and a positioning and replacement mechanism is installed at the drive end of the first motor 4. The positioning and replacement mechanism includes multiple sets of arc-shaped clamping plates 7, a positioning and placement component, a sliding adjustment component, and an inflation component. The positioning and placement component is used to replace arc-shaped clamping plates 7 of different sizes, and the sliding adjustment component is used to position and clamp the tool body in conjunction with the inflation component and the arc-shaped clamping plates 7. In use, the device can replace arc-shaped clamping plates 7 of different sizes through the positioning and placement component, and the sliding adjustment component, in conjunction with the inflation component and the arc-shaped clamping plates 7, can position and clamp the tool body. The structure is simple and easy to operate. It can clamp and assemble tool bodies of different models and sizes according to the actual needs of the work, further improving its practicality.

[0023] In this embodiment, as Figure 1 , Figure 2 and Figure 3 As shown, the positioning and placement assembly includes a rotating frame 8 installed on the drive end of the first motor 4. Multiple sets of fixed seats 9 are arranged on the outer wall of the rotating frame 8. One side of the fixed seat 9 is in contact with the outer wall of the arc-shaped clamp 7. An extension groove is opened at one end of the fixed seat 9. A groove is opened on one side of the extension groove inside the fixed seat 9. A protruding plate 10 is slidably connected to the inside of the groove. First, the arc-shaped clamp 7 with the corresponding arc surface is in contact with the fixed seat 9, so that the extension plate 13 enters the inside of the extension groove and contacts the protruding plate 10. The inclined surfaces abut against each other, forcing the protruding plate 10 to squeeze the two sets of first springs to retract. After the extension plate 13 is completely pushed into the inside of the extension groove, the protruding plate 10 can be ejected by the two sets of first springs and abut against one side of the extension plate 13. At this time, the spring pressure plate 12 is also squeezed, causing the torsion spring and the linkage rod 11 to deflect. The spring pressure plate 12 then retracts into the spring pressure groove.

[0024] In this embodiment, as Figure 1 , Figure 2 and Figure 3As shown, two sets of first springs are arranged and installed between one side of the convex plate 10 and the inner wall of the groove. The groove has an L-shaped cross-section. A spring-loaded groove is provided on one side of the outer wall of the convex plate 10. A linkage rod 11 is rotatably connected to the inner side of the spring-loaded groove. A spring-loaded plate 12 is installed on the outer wall of the linkage rod 11. A torsion spring is installed between one end of the linkage rod 11 and the inner side of the spring-loaded groove. An extension plate 13 is installed on one side of the arc-shaped clamping plate 7 and is slidably connected to the extension plate. The opposite ends of the extension plate 13 and the convex plate 10 are provided with inclined surfaces. On the other side, an abutment groove is provided. A rubber pad 14 is embedded in the outer wall of the extension plate 13 on one side of the abutment groove. Then, the linkage rod 11 is held to drive the protruding plate 10 to continue to move closer to the extension plate 13 and squeeze the rubber pad 14 to retract a certain distance. After the spring pressure groove is aligned with the abutment groove, the linkage rod 11 can be twisted to allow the spring pressure plate 12 to unfold. After unfolding, the hand can be released to allow the rubber pad 14 and the first spring to rebound, so that the spring pressure plate 12 abuts against the inner wall of the abutment groove, thus completing the assembly of the arc-shaped clamp 7.

[0025] In this embodiment, as Figure 1 , Figure 2 and Figure 3 As shown, a pull groove extending into the inner side of the extension groove is provided on one side of the outer wall of the fixed base 9. The linkage rod 11 is slidably connected to the pull groove. A torsion ring 5 is installed at one end of the linkage rod 11 extending to the outer side of the fixed base 9. Furthermore, if the arc-shaped clamp 7 needs to be removed, the torsion ring 5 can be fastened again to drive the linkage rod 11 to move and make the convex plate 10 squeeze the rubber pad 14 to retract. After the abutment groove and the spring pressure groove port are close, the linkage rod 11 can be twisted to make the spring pressure plate 12 retract into the spring pressure groove. Then the convex plate 10 is dragged to the inner side of the groove. At this time, the arc-shaped clamp 7 can be removed and replaced.

[0026] In this embodiment, as Figure 1 , Figure 2 and Figure 3As shown, the sliding adjustment assembly includes adjusting cylinders 21 installed at both ends of the outer wall of the fixed base 9. A threaded rod 22 is rotatably connected to the inner side of the adjusting cylinder 21, and an adjusting plate 23 is threadedly connected to the outer side of the threaded rod 22. The adjusting plate 23 is slidably connected to the inner side of the adjusting cylinder 21. A second motor 6 is installed at one end of the adjusting cylinder 21. The driving end of the second motor 6 extends to the inner side of the adjusting cylinder 21 and is fixedly connected to one end of the threaded rod 22. A sliding sleeve 15 is slidably connected to one end of the outer wall of the adjusting plate 23. A threaded hole extending to the outer wall of the adjusting plate 23 is opened on one side of the outer wall of the sliding sleeve 15. A bolt 16 is threadedly connected to the inner side of the threaded hole. A rubber column 17 is installed at one end of the bolt 16 near the outer wall of the adjusting plate 23. The inflation assembly includes multiple sets of air pumps 18 installed on the surface of the rotating frame 8. Two sets of bellows 19 are installed at the air delivery end of the air pump 18. A pneumatic clamping block 20 is installed at the other end of the bellows 19. One side of the pneumatic clamping block 20 and the sliding sleeve 15 are slidably connected to the outer wall of the adjusting plate 23. One side of the 5 is fixedly connected. The cross-section of the pneumatic clamping block 20 is V-shaped. Furthermore, according to the size of the assembled arc-shaped clamping plate 7, the operator can hold the sliding sleeve 15 and slide it on the adjusting plate 23 so that the pneumatic clamping block 20 can be aligned with the center of the clamped tool. Then, the bolt 16 can be turned into the threaded hole so that the rubber column 17 presses against the surface of the adjusting plate 23 for positioning. Then, the second motor 6 is started to drive the threaded rod 22 to rotate and drive the adjusting plate 23 to slide inside the adjusting cylinder 21 so that the pneumatic clamping block 20 is close to the surface of the tool body. The bellows 19 can extend as the pneumatic clamping block 20 moves. After the tool body is placed, the air pump 18 can be started to inflate the pneumatic clamping block 20 and clamp the tool with the arc-shaped clamping plate 7. The first motor 4 is started to drive the rotating frame 8 to rotate to change the direction. Then, the cylinder 3 is started to drive the tool body on the rotating frame 8 to move and dock with the second grinding equipment 2.

[0027] The implementation principle of the tool clamping and changing structure for a CNC grinding machine according to an embodiment of this application is as follows: An arc-shaped clamping plate 7 with a corresponding arc surface is fitted to a fixed base 9, causing the extension plate 13 to enter the inner side of the extension groove and contact the convex plate 10. The inclined surfaces abut against each other, forcing the convex plate 10 to compress the two sets of first springs and retract. After the extension plate 13 is completely pushed into the extension groove, the convex plate 10 is ejected by the two sets of first springs and abuts against one side of the extension plate 13. At this time, the spring pressure plate 12 is also compressed, causing the torsion spring and the linkage rod 11 to deflect. At this point, the plate retracts into the inner side of the spring-loaded groove. Then, by holding the linkage rod 11, the protruding plate 10 continues to move towards the extension plate 13 and squeezes the rubber pad 14 to retract a certain distance, so that the spring-loaded groove is aligned with the abutment groove. Then, the linkage rod 11 can be twisted to unfold the spring-loaded plate 12. After unfolding, the hand can be released, allowing the rubber pad 14 and the first spring to rebound, so that the spring-loaded plate 12 abuts against the inner wall of the abutment groove, completing the assembly of the arc-shaped clamp 7. Conversely, when it is necessary to remove the arc-shaped clamp 7, the torsion ring 5 can be held again to move the linkage rod 11, allowing the protruding plate 10 to squeeze the rubber pad. 14. After retracting, once the contact groove and the spring pressure groove port are close, the linkage rod 11 can be twisted to retract the spring pressure plate 12 into the inner side of the spring pressure groove. Then, the protruding plate 10 is dragged to the inner side of the groove. At this point, the arc-shaped clamping plate 7 can be removed and replaced. According to the size of the assembled arc-shaped clamping plate 7, the operator can hold the sliding sleeve 15 and slide it on the adjusting plate 23 so that the pneumatic clamping block 20 can be aligned with the center of the clamped tool. Then, the bolt 16 can be turned into the threaded hole so that the rubber column 17 presses against the surface of the adjusting plate 23 for positioning. Then, the first... The second motor 6 can drive the threaded rod 22 to rotate, causing the adjusting plate 23 to slide inside the adjusting cylinder 21, so that the pneumatic clamping block 20 is close to the surface of the tool body. The bellows 19 can extend as the pneumatic clamping block 20 moves. After the tool body is placed, the air pump 18 can be started to inflate the pneumatic clamping block 20, and the tool can be clamped in conjunction with the arc-shaped clamping plate 7. The first motor 4 can be started to drive the rotating frame 8 to rotate to change the direction. Then the cylinder 3 can be started to drive the tool body on the rotating frame 8 to move and dock with the second grinding device 2.

[0028] The control method of this utility model is through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the field. Since this utility model is used to protect mechanical devices, the control method and circuit connection will not be explained in detail.

[0029] 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 clamping and changing structure for a numerical control grinding machine, comprising a numerical control grinding machine housing (1), characterized in that: A first grinding device is installed on one side of the inner wall of the CNC grinding machine housing (1), and a second grinding device (2) is installed on the other side of the inner wall of the CNC grinding machine housing (1). A cylinder (3) is installed on the inner wall of the CNC grinding machine housing (1) above the second grinding device (2). A first motor (4) is installed at the output end of the cylinder (3). A positioning and replacement mechanism is installed at the drive end of the first motor (4). The positioning and replacement mechanism includes multiple sets of arc-shaped clamps (7), a positioning and placement component, a sliding adjustment component, and an inflation component. The positioning and placement component is used to replace arc-shaped clamps (7) of different sizes. The sliding adjustment component is used to cooperate with the inflation component and the arc-shaped clamps (7) to position and clamp the tool body.

2. The tool clamping and changing structure for a CNC grinding machine according to claim 1, characterized in that: The positioning and placement assembly includes a rotating frame (8) installed on the drive end of the first motor (4). Multiple sets of fixed seats (9) are arranged on the outer wall of the rotating frame (8). One side of the fixed seat (9) is in contact with the outer wall of the arc-shaped clamp (7). An extension groove is provided at one end of the fixed seat (9). A groove is provided on one side of the extension groove inside the fixed seat (9). A protrusion plate (10) is slidably connected to the inner side of the groove.

3. The tool clamping and changing structure for a CNC grinding machine according to claim 2, characterized in that: Two sets of first springs are arranged and installed between one side of the convex plate (10) and the inner wall of the groove. The groove has an L-shaped cross section. A spring-loaded groove is provided on one side of the outer wall of the convex plate (10). A linkage rod (11) is rotatably connected to the inner side of the spring-loaded groove. A spring-loaded plate (12) is installed on the outer wall of the linkage rod (11). A torsion spring is installed between one end of the linkage rod (11) and the inner side of the spring-loaded groove. An extension plate (13) is installed on one side of the arc-shaped clamp (7) and is slidably connected to the extension plate. An inclined surface is provided at the opposite ends of the extension plate (13) and the convex plate (10). An abutment groove is provided on the other side of the extension plate (13). A rubber pad (14) is embedded and installed on the outer wall of the extension plate (13) on one side of the abutment groove.

4. The tool clamping and changing structure for a CNC grinding machine according to claim 3, characterized in that: A groove extending into the inner side of the extension slot is provided on one side of the outer wall of the fixed seat (9). The linkage rod (11) is slidably connected to the groove. A torsion ring (5) is installed at one end of the linkage rod (11) extending to the outside of the fixed seat (9).

5. The tool clamping and changing structure for a CNC grinding machine according to claim 4, characterized in that: The sliding adjustment assembly includes an adjustment cylinder (21) installed at both ends of the outer wall of the fixed base (9). A threaded rod (22) is rotatably connected to the inner side of the adjustment cylinder (21), and an adjustment plate (23) is threadedly connected to the outer side of the threaded rod (22). The adjustment plate (23) is slidably connected to the inner side of the adjustment cylinder (21). A second motor (6) is installed at one end of the adjustment cylinder (21), and the driving end of the second motor (6) extends to the inner side of the adjustment cylinder (21) and is fixedly connected to one end of the threaded rod (22).

6. The tool clamping and changing structure for a CNC grinding machine according to claim 5, wherein: A sliding sleeve (15) is slidably connected to one end of the outer wall of the adjusting plate (23). A threaded hole extending to the outer wall of the adjusting plate (23) is opened on one side of the outer wall of the sliding sleeve (15). A bolt (16) is threadedly connected to the inner side of the threaded hole. A rubber column (17) is installed at one end of the bolt (16) near the outer wall of the adjusting plate (23).

7. The tool clamping and changing structure for a CNC grinding machine according to claim 6, characterized in that: The inflation assembly includes multiple air pumps (18) mounted on the surface of the rotating frame (8). Two sets of bellows (19) are installed at the air delivery end of the air pump (18). A pneumatic clamping block (20) is installed at the other end of the bellows (19). One side of the pneumatic clamping block (20) is fixedly connected to one side of the sliding sleeve (15). The cross-section of the pneumatic clamping block (20) is V-shaped.

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