Numerical control lathe spindle taper hole coping device

Abstract

The invention relates to the technical field of coping devices, in particular to a numerical control lathe spindle taper hole coping device which comprises a base, a clamping mechanism and a movable rotating mechanism are arranged at the top end of the base, and a cleaning detection mechanism and a coping mechanism are arranged on the movable rotating mechanism; the movable rotating mechanism comprises a rotating body, the rotating body is formed by combining a conical block and a cylinder, the cleaning detection mechanism comprises square grooves formed in the positions, close to the four sides of the clamping mechanism, of the outer wall of the rotating body, cleaning holes are formed in one ends of the four square grooves in a penetrating mode, and spraying openings are formed in one sides of the inner walls of the four cleaning holes in a penetrating mode. The taper hole in the main shaft body can be cleaned, cuttings are prevented from remaining on the inner wall of the taper hole, and therefore the situation that the cuttings scrape the inner wall of the taper hole in the grinding process can be prevented, the phenomenon that fine scratches or galling is formed on the inner wall of the taper hole is avoided, meanwhile, local materials are prevented from being excessively removed, and the geometrical shape of the taper hole is prevented from being damaged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of grinding device, especially to a numerical control lathe spindle taper hole grinding device. BACKGROUND

[0002] The numerical control lathe spindle is a rotating shaft installed in the lathe head box, which is driven by a motor to rotate at high speed or low speed, used to drive the workpiece (or tool) to do circular motion, so as to complete the cutting process, and the spindle taper hole is a tapered structure at the front end of the spindle for installing the tool or clamp, and after long-term use, the spindle taper hole will leave marks on the spindle taper hole, which will affect the accuracy of the spindle taper hole axis, thereby affecting the machining accuracy of milling and reaming, so it is necessary to regularly grind the spindle taper hole to ensure the machining accuracy of the workpiece.

[0003] In the prior art, since the spindle taper hole is in use for a long time, small chips will fall on the inner wall of the spindle taper hole, and due to the small size of the chips, the inner wall of the spindle taper hole cannot be effectively cleaned, so that when the inner wall of the spindle taper hole is ground, the chips are clamped between the grinding block and the inner wall of the taper hole, so that when the grinding block rotates, it will scratch the inner wall of the taper hole, forming fine scratches or roughness, and at the same time, the local material is removed excessively, damaging the geometry of the taper hole (such as taper deviation, roundness deviation). In addition, before grinding the inner wall of the spindle taper hole, the inner wall of the taper hole is also not cracked, so that the condition of the taper hole cannot be known, so that the crack of the spindle is more likely to expand, and even cause the sudden fracture of the spindle, thereby causing equipment failure or safety accident. SUMMARY

[0004] The purpose of the present application is to solve the shortcomings in the background art, and a numerical control lathe spindle taper hole grinding device is provided.

[0005] To achieve the above purpose, the technical scheme adopted by the present application is as follows: a numerical control lathe spindle taper hole grinding device, comprising a base, the top end of the base is provided with a clamping mechanism and a moving rotation mechanism, the moving rotation mechanism is provided with a cleaning detection mechanism and a grinding mechanism; The mobile rotating mechanism comprises a rotating body combined by a conical block and a cylinder, the cleaning detection mechanism comprises a square slot opened on the outer wall of the rotating body near the four sides of the clamping mechanism, a cleaning hole is arranged at one end of the four square slots, a spraying port is arranged on one side of the inner wall of the four cleaning holes, the spraying port sprays the cleaning agent to clean the inner wall of the taper hole of the main shaft body, when the spraying port sprays the cleaning agent, the rotating body rotates, when the rotating body is combined with the taper hole of the main shaft body, the cleaning agent is scraped off, the inner wall of the four square slots is fixedly connected with a camera, and the four cameras are used for defect detection of the inner wall of the taper hole of the main shaft body.

[0006] Preferably, the cleaning detection mechanism further comprises a blocking plate slidingly arranged on the inner wall of the square slot, one end of the four blocking plates is fixedly connected with a spring, the other end of the four springs is fixedly connected with a fixed block, the four fixed blocks and the four square slots are fixedly connected respectively, the other end of the four blocking plates is fixedly connected with an extension column, and the four extension columns are arranged on the inner wall of the four cleaning holes.

[0007] Preferably, an annular groove is formed at one end of the rotating body away from the clamping mechanism, the annular groove is communicated with the four cleaning holes, a fixed ring is rotatably connected to the inner wall of the annular groove, an injection pipe is fixedly penetrated into the bottom of the other end of the fixed ring, and limit frames are fixedly connected to the two sides of the other end of the fixed ring.

[0008] Preferably, the grinding mechanism comprises a piston groove formed in the inner side of the annular groove at one end of the rotating body, the piston groove is communicated with a shunt groove, communication holes are arranged on the four sides of the inner wall of the shunt groove, extension grooves are formed between the square grooves on the outer side of the rotating body, and the four extension grooves and the four communication holes are communicated respectively.

[0009] Preferably, fixed sleeves are fixedly connected to the outer side of one end of the four extension grooves corresponding to the outer side of the communication holes, moving columns are slidingly arranged on the inner wall of the four fixed sleeves, grinding blocks are fixedly connected to one end of the outer side of the four moving columns, the four grinding blocks and the four extension grooves are slidingly connected respectively, tension springs are fixedly connected to the two sides of one end of the inner side of the four grinding blocks corresponding to the moving columns, and the four groups of tension springs and the four extension grooves are fixedly connected respectively.

[0010] Preferably, the grinding mechanism further comprises an L-shaped plate, an electric push rod is fixedly connected to one end of the L-shaped plate away from the rotating body, a connecting block is fixedly connected to the extension end of the electric push rod, a piston rod is rotatably connected to the other end of the connecting block, a piston plate is fixedly connected to the other end of the piston rod, and the piston plate is arranged on the inner wall of the piston groove.

[0011] Preferably, the rotating body is provided with a circular groove at one end corresponding to both sides of the piston groove, the inner wall of the two circular grooves is slidably provided with a circular column, one end of the two circular columns is fixedly connected with a connecting plate, and the two connecting plates are fixedly connected with the piston rod.

[0012] Preferably, the moving and rotating mechanism further comprises a linear motor fixedly arranged on one side of the top end of the base, the driving end of the linear motor is fixedly connected with a support column, the support column is rotatably connected with the rotating body, the support column is fixedly connected with the L-shaped plate, the support column is fixedly connected with the two limiting frames, the lower side of the L-shaped plate is fixedly connected with a driving motor at one end of the support column, the driving end of the driving motor is fixedly connected with a driving shaft, the driving shaft penetrates through the support column in rotation, the other end of the driving shaft is fixedly connected with a gear, the outer diameter of the gear is meshingly connected with an external gear ring, and the external gear ring is fixedly connected with the rotating body.

[0013] Preferably, the clamping mechanism comprises a fixed frame fixedly connected on the other side of the top end of the base, a hydraulic rod fixedly connected on the top end of the fixed frame, and an upper clamping seat fixedly connected on the telescopic end of the hydraulic rod.

[0014] Compared with the prior art, the present application has the following beneficial effects: 1. Through the cooperation of the cleaning detection mechanism and the moving and rotating mechanism, the cleaning agent can be injected into the cleaning hole through the injection pipe, the cleaning agent pushes the telescopic column to move, and the blocking plate covers the camera, at this time the cleaning agent is sprayed out through the spray port, the taper hole on the main shaft body can be cleaned, the residual cutting chips on the inner wall of the taper hole are prevented, thereby preventing the cutting chips from scratching the inner wall of the taper hole during the grinding, avoiding the formation of fine scratches or fuzz phenomenon on the inner wall of the taper hole, preventing excessive removal of local material, and avoiding damage to the geometry of the taper hole. When cleaning, the camera can be protected to prevent the cleaning agent from splashing on the camera and affecting subsequent defect detection. After cleaning, the camera detects defects on the inner wall of the taper hole, cracks in the used main shaft taper hole can be found in time, thereby preventing equipment failure and improving safety. 2. Through the cooperation of the grinding mechanism and the moving and rotating mechanism, the hydraulic oil in the piston groove can be squeezed by the piston plate, and the hydraulic oil can be divided into the fixed sleeve through the shunt groove and the communication hole, so that the moving column and the grinding block can move outward, and the diameter of the taper hole can be adjusted, thereby improving the applicability. 3. Through the clamping mechanism, the hole on the main shaft body can be clamped on the limiting column on the lower clamping seat, so that the limiting operation can be performed, and then the groove on the upper clamping seat is clamped on the outer wall of the ring on the main shaft body, thereby the main shaft body can be clamped and fixed, preventing rotation during grinding, and ensuring grinding quality. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a CNC lathe spindle taper hole grinding device according to the present invention; Figure 2 This invention relates to a grinding device for the taper hole of a CNC lathe spindle. Figure 1 Enlarged view of the structure at point A in the middle; Figure 3 This is a schematic diagram from another perspective of the CNC lathe spindle taper hole grinding device of the present invention; Figure 4 This invention relates to a grinding device for the taper hole of a CNC lathe spindle. Figure 3 Enlarged view of the structure at point B in the middle; Figure 5 This is a separate view of the upper and lower clamping seats of the CNC lathe spindle taper hole grinding device of the present invention; Figure 6 This is a structural diagram of the drive shaft of a CNC lathe spindle taper hole grinding device according to the present invention; Figure 7 This is a sectional view of the rotating body of a CNC lathe spindle taper hole grinding device according to the present invention; Figure 8 This invention relates to a grinding device for the taper hole of a CNC lathe spindle. Figure 7 Enlarged view of the structure at point C; Figure 9 This is a sectional view of the rotating body of a CNC lathe spindle taper hole grinding device according to the present invention; Figure 10 This invention relates to a grinding device for the taper hole of a CNC lathe spindle. Figure 9 Enlarged view of the structure at point D.

[0016] In the diagram: 1. Base; 2. Lower clamping seat; 3. Linear motor; 4. Support column; 5. Drive motor; 6. Rotating body; 7. Spindle body; 8. Upper clamping seat; 9. Fixing frame; 10. Hydraulic rod; 11. Connecting block; 12. Connecting plate; 13. Circular column; 14. Fixing ring; 15. Piston rod; 16. Piston groove; 17. Limiting frame; 18. Electric push rod; 19. L-shaped plate; 20. Injection pipe; 21. 21. Baffle plate; 22. Square groove; 23. Gear; 24. External gear ring; 25. Grinding block; 26. Drive shaft; 27. Piston plate; 28. Connecting hole; 29. ​​Cleaning hole; 30. Diverting groove; 31. Circular groove; 32. Annular groove; 33. Injection nozzle; 34. Telescopic column; 35. Spring; 36. Camera; 37. Fixing block; 38. Moving column; 39. Tension spring; 40. Fixing sleeve; 41. Telescopic groove. Detailed Implementation

[0017] The following description is used to disclose the present application to enable a person skilled in the art to implement the present application. The preferred embodiments in the following description are only as examples, and other obvious modifications can be conceived by those skilled in the art.

[0018] As shown in Figures 1-10 A numerical control lathe spindle taper hole grinding device, including the base 1, the base 1 top end is provided with clamping mechanism and mobile rotation mechanism, mobile rotation mechanism is provided with cleaning detection mechanism and grinding mechanism; mobile rotation mechanism includes rotating body 6, rotating body 6 is combined by conical block and cylinder, cleaning detection mechanism includes square groove 22 opened in the outer wall of rotating body 6 near the clamping mechanism four sides, four square grooves 22 one end are provided with cleaning hole 29, four cleaning holes 29 inner wall one side are provided with injection port 33, injection port 33 sprays cleaning agent, which cleans the inner wall of the taper hole of the spindle body 7, when injection port 33 sprays cleaning agent, rotating body 6 rotates, rotating body 6 and taper hole of spindle body 7 are combined, which scrapes off the cleaning agent, four square grooves 22 inner wall are fixedly connected with camera 36, four cameras 36 are used for detecting defects of the inner wall of the taper hole of the spindle body 7.

[0019] As shown in Figure 4 、 Figure 8 Cleaning detection mechanism further includes blocking plate 21 slidingly arranged on the inner wall of square groove 22, four blocking plates 21 one end are fixedly connected with spring 35, four springs 35 other end are fixedly connected with fixed block 37, four fixed blocks 37 and four square grooves 22 are fixedly connected, four blocking plates 21 other end are fixedly connected with telescopic column 34, four telescopic columns 34 are arranged on the inner wall of four cleaning holes 29. When cleaning, blocking plate 21 protects camera 36, prevents cleaning agent from splashing on camera 36, avoids affecting the subsequent detection effect.

[0020] As shown in Figure 2 、 Figure 6 、 Figure 7 Rotating body 6 far from the clamping mechanism one end is provided with annular groove 32, annular groove 32 and four cleaning holes 29 are communicated, annular groove 32 inner wall is rotatably connected with fixed ring 14, fixed ring 14 other end bottom is fixedly connected with injection pipe 20, fixed ring 14 other end two sides are fixedly connected with limiting frame 17. Limiting frame 17 limits fixed ring 14, avoids rotating body 6 rotating, fixed ring 14 rotating.

[0021] As shown in Figure 2 、 Figure 9 、 Figure 10As shown, the grinding mechanism includes a piston groove 16 opened in the inner side of the annular groove 32 at one end of the rotating body 6, the piston groove 16 is communicated with a shunt groove 30, the inner wall of the shunt groove 30 is provided with a communication hole 28 on four sides, the outer side of the rotating body 6 is provided with an extension groove 41 between the square grooves 22, and the four extension grooves 41 and the four communication holes 28 are communicated respectively. At this time, the hydraulic oil exists in the piston groove 16, the shunt groove 30 and the communication hole 28, and the hydraulic oil is used to adjust and process the grinding block 25.

[0022] As shown in Figure 10 , the outer side of one end of the four extension grooves 41 corresponds to the outer side of the communication hole 28 and is fixedly connected with a fixed sleeve 40, the inner wall of the four fixed sleeves 40 is slidably provided with a moving column 38, the outer side of one end of the four moving columns 38 is fixedly connected with a grinding block 25, the four grinding blocks 25 and the four extension grooves 41 are slidably connected, the inner side of one end of the four grinding blocks 25 corresponds to the two sides of the moving column 38 and is fixedly connected with a tension spring 39, and the four groups of tension springs 39 and the four extension grooves 41 are fixedly connected. Since the grinding block 25 moves in the extension groove 41, the diameter of the taper hole can be adjusted and processed, and the applicability of the device is improved.

[0023] As shown in Figure 2 , Figure 7 , Figure 9 , the grinding mechanism further comprises an L-shaped plate 19, the L-shaped plate 19 is fixedly connected with an electric push rod 18 away from one end of the rotating body 6, the extension end of the electric push rod 18 is fixedly connected with a connecting block 11, the other end of the connecting block 11 is rotatably connected with a piston rod 15, the other end of the piston rod 15 is fixedly connected with a piston plate 27, and the piston plate 27 is arranged on the inner wall of the piston groove 16. The two sides of the piston groove 16 at one end of the rotating body 6 are provided with a circular groove 31, the inner wall of the two circular grooves 31 is slidably provided with a circular column 13, one end of the two circular columns 13 is fixedly connected with a connecting plate 12, and the two connecting plates 12 are fixedly connected with the piston rod 15. The cooperation of the circular groove 31 and the circular column 13 can limit the piston rod 15, so that it can only move horizontally.

[0024] As shown in Figures 1-4As shown, the mobile rotating mechanism further comprises a linear motor 3 fixedly arranged at one side of the top end of the base 1, the driving end of the linear motor 3 is fixedly connected with a support column 4, the support column 4 is rotatably connected with the rotating body 6, the support column 4 is fixedly connected with the L-shaped plate 19, the support column 4 is fixedly connected with the two limiting racks 17, one end of the support column 4 is fixedly connected with a driving motor 5 below the L-shaped plate 19, the driving end of the driving motor 5 is fixedly connected with a driving shaft 26, the driving shaft 26 rotatably penetrates through the support column 4, the other end of the driving shaft 26 is fixedly connected with a gear 23, the outer diameter of the gear 23 is meshingly connected with an external tooth ring 24, the external tooth ring 24 is fixedly connected with the rotating body 6. The linear motor 3 moves back and forth with the support column 4, and the L-shaped plate 19 and the limiting rack 17 are limited by the support column 4.

[0025] As shown in Figure 1 , Figure 3 , Figure 5 As shown, the clamping mechanism comprises a fixed frame 9 fixedly connected at the other side of the top end of the base 1, the top end of the fixed frame 9 is fixedly connected with a hydraulic rod 10, the telescopic end of the hydraulic rod 10 is fixedly connected with an upper clamping seat 8, the top end of the base 1 is fixedly connected with a lower clamping seat 2 corresponding to the inner side of the fixed frame 9. The top end of the upper clamping seat 8 is fixedly connected with guide rods on both sides and penetrates through the fixed frame 9, which is used for guiding and limiting the upper clamping seat 8, and the main shaft body 7 is clamped and limited by the upper clamping seat 8 and the lower clamping seat 2.

[0026] Working principle: first, place the main shaft body 7 on the lower clamping seat 2, then insert the hole on the ring into the limiting column on the lower clamping seat 2, then start the hydraulic rod 10 to push the upper clamping seat 8 down and contact the upper half of the main shaft body 7, at this time the groove on the upper clamping seat 8 is clamped on the ring, so that the main shaft body 7 can be clamped and limited by the lower clamping seat 2 and the upper clamping seat 8, preventing deflection during grinding, and avoiding affecting the grinding quality; When the clamping limit is reached, the cleaning agent is injected into the annular groove 32 through the injection pipe 20. Since the annular groove 32 is in communication with the four cleaning holes 29, the cleaning agent can be distributed into the four cleaning holes 29. At this time, due to the blockage of the telescopic column 34, a positive pressure effect is generated in the cleaning hole 29, which pushes the telescopic column 34 to move to one side until the telescopic column 34 unblocks the injection port 33. At this time, the cleaning agent is sprayed from the injection port 33. Meanwhile, the driving motor 5 is started to rotate the driving shaft 26 and the gear 23, and the gear 23 rotates the outer gear ring 24. Since the outer gear ring 24 and the rotating body 6 are fixedly connected, the rotating body 6 is rotated, so that the injection direction of the injection port 33 can be changed. Meanwhile, the linear motor 3 is started to move the rotating body 6 towards the main shaft body 7, so that the rotating body 6 is moved into the tapered hole of the main shaft body 7, thereby cleaning the inner wall of the tapered hole of the main shaft body 7. This prevents small chips from remaining on the inner wall of the tapered hole, prevents the chip from scratching the inner wall of the tapered hole during grinding, avoids forming fine scratches or roughness on the inner wall of the tapered hole, and prevents excessive removal of local material and damage to the geometry of the tapered hole. When the rotating body 6 contacts the inner wall of the tapered hole of the main shaft body 7, the cleaning agent on the inner wall is scraped off to prevent affecting the subsequent defect detection. When cleaning, the telescopic column 34 pushes the blocking plate 21 to move to one side until the blocking plate 21 completely covers the camera 36, so that the cleaning agent is prevented from splashing onto the camera 36 during cleaning, and the use of the camera 36 is avoided. When the cleaning is completed, the rotating body 6 is reset. At this time, the elastic reset action of the spring 35 can reset the blocking plate 21 and expose the camera 36. Then, the rotating body 6 is rotated again to rotate the camera 36 synchronously. When the rotating body 6 moves towards the main shaft body 7, the defect detection of the inner wall of the tapered hole of the main shaft body 7 is completed, so that the crack on the inner wall of the tapered hole of the main shaft body 7 can be found in time, thereby preventing equipment failure and improving the safety of use. When the cleaning and detection are completed, the rotating body 6 is reset. At this time, the electric push rod 18 is started to push the connecting block 11 and the piston rod 15 to move to one side, so that the piston plate 27 is pushed to move to one side and press the hydraulic oil in the piston groove 16. At this time, the hydraulic oil is distributed into the fixed sleeve 40 through the communication hole 28 on the distribution groove 30, the grinding block 25 is pushed out and protrudes a part, the rotating body 6 is moved towards the main shaft body 7, and the protruding grinding block 25 contacts the inner wall of the tapered hole of the main shaft body 7. At this time, the rotating body 6 is rotated to complete the grinding treatment of the inner wall of the tapered hole of the main shaft body 7. Therefore, the diameter of the tapered hole of the main shaft body 7 can be adjusted during use, thereby improving the applicability of the device.

[0027] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only the principles of the present application. Various changes and improvements can be made without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A grinding device for the taper hole of a CNC lathe spindle, comprising a base (1), characterized in that: The base (1) is provided with a clamping mechanism and a moving and rotating mechanism at its top end. The moving and rotating mechanism is provided with a cleaning and detection mechanism and a grinding mechanism. The moving and rotating mechanism includes a rotating body (6), which is composed of a conical block and a cylinder. The cleaning and detection mechanism includes square grooves (22) on the outer wall of the rotating body (6) near the four sides of the clamping mechanism. Each of the four square grooves (22) has a cleaning hole (29) at one end. Each of the four cleaning holes (29) has a spray nozzle (33) on one side of its inner wall. The spray nozzle (33) sprays out cleaning agent to clean the inner wall of the conical hole of the spindle body (7). When the spray nozzle (33) sprays cleaning agent, the rotating body (6) rotates. When the rotating body (6) is in contact with the conical hole of the spindle body (7), the cleaning agent is scraped off. Each of the four square grooves (22) has a camera (36) fixedly connected to its inner wall. The four cameras (36) are used to detect defects in the inner wall of the conical hole of the spindle body (7).

2. The CNC lathe spindle taper hole grinding device according to claim 1, characterized in that: The cleaning detection mechanism also includes baffles (21) that are slidably disposed on the inner wall of the square groove (22). One end of each of the four baffles (21) is fixedly connected to a spring (35), and the other end of each of the four springs (35) is fixedly connected to a fixing block (37). The four fixing blocks (37) and the four square grooves (22) are respectively fixedly connected. The other end of each of the four baffles (21) is fixedly connected to a telescopic column (34), and the four telescopic columns (34) are respectively disposed on the inner wall of the four cleaning holes (29).

3. The CNC lathe spindle taper hole grinding device according to claim 1, characterized in that: The rotating body (6) has an annular groove (32) at one end away from the clamping mechanism. The annular groove (32) is connected to four cleaning holes (29). A fixed ring (14) is rotatably connected to the inner wall of the annular groove (32). An injection tube (20) is fixedly inserted through the bottom of the other end of the fixed ring (14). Limit frames (17) are fixedly connected to both sides of the other end of the fixed ring (14).

4. The CNC lathe spindle taper hole grinding device according to claim 1, characterized in that: The grinding mechanism includes a piston groove (16) formed on the inner side of the annular groove (32) at one end of the rotating body (6). The piston groove (16) is connected to a diversion groove (30). The inner wall of the diversion groove (30) is provided with connecting holes (28) on all four sides. The outer side of the rotating body (6) is provided with telescopic grooves (41) between the square grooves (22). The four telescopic grooves (41) and the four connecting holes (28) are connected respectively.

5. A CNC lathe spindle taper hole grinding device according to claim 4, characterized in that: A fixed sleeve (40) is fixedly connected to the outer side of the four telescopic grooves (41) corresponding to the outer side of the connecting hole (28). A movable column (38) is slidably arranged on the inner wall of each of the four fixed sleeves (40). A grinding block (25) is fixedly connected to the outer side of each of the four movable columns (38). The four grinding blocks (25) and the four telescopic grooves (41) are slidably connected. A tension spring (39) is fixedly connected to both sides of the movable column (38) corresponding to the inner side of each of the four grinding blocks (25). The four sets of tension springs (39) and the four telescopic grooves (41) are fixedly connected.

6. A CNC lathe spindle taper hole grinding device according to claim 4, characterized in that: The grinding mechanism also includes an L-shaped plate (19), with an electric push rod (18) fixedly connected to one end of the L-shaped plate (19) away from the rotating body (6). A connecting block (11) is fixedly connected to the telescopic end of the electric push rod (18), and a piston rod (15) is rotatably connected to the other end of the connecting block (11). A piston plate (27) is fixedly connected to the other end of the piston rod (15), and the piston plate (27) is disposed on the inner wall of the piston groove (16).

7. A CNC lathe spindle taper hole grinding device according to claim 6, characterized in that: The rotating body (6) has a circular groove (31) on both sides of the piston groove (16) at one end. A circular column (13) is slidably arranged on the inner wall of the two circular grooves (31). A connecting plate (12) is fixedly connected to one end of the two circular columns (13). The two connecting plates (12) are fixedly connected to the piston rod (15).

8. A CNC lathe spindle taper hole grinding device according to claim 1, characterized in that: The moving and rotating mechanism also includes a linear motor (3) fixedly installed on one side of the top of the base (1). The driving end of the linear motor (3) is fixedly connected to a support column (4). The support column (4) and the rotating body (6) are rotatably connected. The support column (4) and the L-shaped plate (19) are fixedly connected. The support column (4) and the two limit frames (17) are both fixedly connected. One end of the support column (4) is fixedly connected to a drive motor (5) below the L-shaped plate (19). The driving end of the drive motor (5) is fixedly connected to a drive shaft (26). The drive shaft (26) rotates through the support column (4). The other end of the drive shaft (26) is fixedly connected to a gear (23). The outer diameter of the gear (23) meshes with an external gear ring (24). The external gear ring (24) and the rotating body (6) are fixedly connected.

9. A CNC lathe spindle taper hole grinding device according to claim 1, characterized in that: The clamping mechanism includes a fixed frame (9) fixedly connected to the other side of the top of the base (1), a hydraulic rod (10) fixedly connected to the top of the fixed frame (9), an upper clamping seat (8) fixedly connected to the telescopic end of the hydraulic rod (10), and a lower clamping seat (2) fixedly connected to the inner side of the fixed frame (9) corresponding to the top of the base (1).

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