Full-automatic hydraulic self-centering center frame and using method thereof

Abstract

The invention relates to the technical field of hydraulic center frames, and provides a full-automatic hydraulic self-centering center frame and a using method thereof.The full-automatic hydraulic self-centering center frame comprises the hydraulic center frame, the hydraulic center frame is composed of a shell, a driving air cylinder, a clamping jaw, a rolling wheel, a limiting frame and a lifting frame, the clamping jaw is hinged to the limiting frame, the limiting frame is hinged to the lifting frame, and the rolling wheel is arranged on the shell; and rollers are mounted at the top end of the lifting frame and the top ends of the clamping jaws. Through the laser distance measuring sensor, the contour of a workpiece can be rapidly scanned, the actual diameter can be calculated, whether the workpiece is round and has obvious deformation or not can be verified in an auxiliary mode through the camera, the stroke extension of the clamping jaw is calculated according to the size of the workpiece, the driving air cylinder is started, the lifting frame drives the limiting frame to move, and the clamping jaw extends out; the pressure sensor feeds back the contact force in real time, when the preset clamping force threshold value is reached, the clamping jaw stops acting, the purpose of self-adaptive centering is achieved, and the situation that due to the fact that the clamping force cannot be adjusted in a self-adaptive mode, over-clamping deformation occurs is avoided.

Description

Technical Field

[0001] This invention relates to the field of hydraulic centering technology, and in particular to a fully automatic hydraulic self-centering centering machine and its usage method. Background Technology

[0002] A hydraulic center rest is a precision auxiliary device used in machining to support and center rotating workpieces. It includes mechanical devices, a hydraulic system, and a control system. The hydraulic system provides stable support force to ensure the accuracy and stability of long shaft or heavy workpieces during machining. To address this, patent CN220680013U discloses a hydraulic center frame, including a hydraulic center frame and a locking rod disposed at one end of the hydraulic center frame. The outer end of the locking rod is detachably connected to a rubber sleeve. Through the combined use of the rubber sleeve, anti-slip pad, and sponge liner, the rubber sleeve, when fitted onto the surface of the locking rod, provides a flexible isolation effect between the workpiece and the locking rod. The sponge liner, sprayed with lubricating oil, lubricates and maintains the surface of the locking rod. Furthermore, the rubber sleeve facilitates assembly, use, and disassembly of the locking rod of the hydraulic center frame without requiring processing during the production of the hydraulic center frame. Existing hydraulic self-centering center frames have poor self-centering function. For thin-walled parts and soft materials, the clamping force cannot be adjusted adaptively, which can easily lead to over-clamping deformation or surface damage. Summary of the Invention

[0003] The purpose of this invention is to provide a fully automatic hydraulic self-centering center frame and its usage method, in order to solve the defect of poor adaptive centering function of existing hydraulic self-centering center frames.

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a fully automatic hydraulic self-centering center frame and its usage method, comprising a hydraulic center frame, wherein the hydraulic center frame is composed of a shell, a drive cylinder, a jaw, rollers, a limit frame, and a lifting frame. The jaw is hinged to the limit frame, the limit frame is hinged to the lifting frame, and rollers are installed at the top of the lifting frame and the top of the jaw. A pressure sensor is installed inside the hydraulic chamber of the drive cylinder, and a temperature sensor is installed on the inner side of the upper end face of the jaw. A camera is installed on the top of one side of the shell, and a control circuit board is installed on the inner wall of the shell. An auxiliary structure is provided on the top of one end of the jaw and the lifting frame, the auxiliary structure including a protective cover installed on the top of one end of the jaw and the lifting frame and a laser rangefinder sensor disposed inside the protective cover.

[0005] Preferably, the bottom end of the lifting frame is connected to the output end of the drive cylinder at the bottom end of the housing, and both the lifting frame and the limiting frame are installed inside the housing.

[0006] Preferably, the camera lens is oriented toward the radial contour of the workpiece.

[0007] The above structure allows for the imaging and scanning of the outer surface of a workpiece.

[0008] Preferably, the laser rangefinder is connected to the inner wall of the protective cover via a shock-absorbing pad.

[0009] Preferably, the auxiliary structure further includes a baffle and an adjustment assembly. The baffle is symmetrically installed at one end of the protective cover and is connected to the adjustment assembly. The adjustment assembly includes a base, a half gear, a pinion, a fixed motor, a large gear, and a connecting frame. The base is installed on one side of one end of the protective cover. The half gear and the large gear are respectively installed on both sides inside the base. The pinion is installed on one side of the bottom of the base. One end of the pinion is connected to the output end of the fixed motor. A connecting frame is installed on both the half gear and the large gear. One end of the connecting frame is fixedly connected to the bottom end of the baffle.

[0010] The above structure can protect the laser rangefinder when the workpiece is not in place, preventing iron filings generated during workpiece processing from impacting the laser rangefinder.

[0011] Preferably, the baffle has a semi-circular structure.

[0012] The above structure can completely cover the lens of the laser rangefinder.

[0013] Preferably, the half gear meshes with the large gear, and the large gear meshes with the small gear.

[0014] Preferably, the inner side of each baffle is provided with a cleaning structure, the cleaning structure including a groove, a cleaning brush and a limiting spring. The grooves are all opened on the inner side of the baffle, and the limiting springs are uniformly installed inside the grooves, and a cleaning brush is installed at one end of each limiting spring.

[0015] The above structure allows for the cleaning of the lens of the laser rangefinder, preventing dust accumulation on the lens from affecting its performance.

[0016] Preferably, the limiting springs are arranged at equal intervals inside the groove.

[0017] The above structure increases the contact area between the cleaning brush and the laser rangefinder sensor lens.

[0018] Preferably, one end of the cleaning brush is disposed inside the groove, and the cleaning brush and the limiting spring form a telescopic structure.

[0019] With the above structure, the telescopic spring can move the cleaning brush so that it comes into contact with the lens of the laser rangefinder sensor.

[0020] The present invention provides a fully automatic hydraulic self-centering center frame and its usage method, the advantages of which are: The laser rangefinder sensor can quickly scan the outline of the workpiece and calculate the actual diameter. The camera assists in verifying whether the workpiece is round and whether there is any obvious deformation. Based on the size of the workpiece, the stroke extension of the jaws is calculated, the drive cylinder is started, the lifting frame moves the limit frame, and the jaws extend. At the same time, the pressure sensor provides real-time feedback on the contact force. When the preset clamping force threshold is reached, the jaws stop moving, achieving the purpose of adaptive centering and avoiding over-clamping deformation due to the inability to adaptively adjust the clamping force. Furthermore, the temperature sensor can monitor the temperature of the workpiece. If the temperature of the workpiece rises during processing, its diameter will expand slightly. The data fed back by the temperature sensor can allow the system to automatically fine-tune the clamping force of the jaws to avoid centering accuracy drift. Furthermore, the baffle can protect the laser rangefinder when the workpiece is not in position, preventing iron filings generated during workpiece processing from impacting the laser rangefinder. When the workpiece is in position and centering is triggered, the adjusting component moves the baffle to expose the laser rangefinder for scanning the workpiece. Furthermore, the limiting spring moves the cleaning brush, bringing it into contact with the lens of the laser rangefinder. As the baffle moves, the cleaning brush cleans the lens of the laser rangefinder, preventing dust from accumulating on the lens and affecting its performance. Attached Figure Description

[0021] Figure 1 This is a front view structural diagram of the present invention; Figure 2 This is a frontal cross-sectional view of the present invention. Figure 3 For the present invention Figure 1 Enlarged structural diagram at point A in the middle; Figure 4 This is a partial top view of the structure of the present invention; Figure 5 This is a side view of the auxiliary structure of the present invention; Figure 6 This is a front cross-sectional view of the adjustment component of the present invention; Figure 7 This is a frontal cross-sectional view of the cleaning structure of the present invention.

[0022] The following are the annotations in the diagram: 1. Hydraulic center frame; 11. Housing; 12. Drive cylinder; 13. Claw; 14. Roller; 15. Limit frame; 16. Lifting frame; 2. Camera; 3. Auxiliary structure; 31. Protective cover; 32. Laser rangefinder sensor; 33. Baffle; 34. Adjustment component; 341. Base; 342. Half gear; 343. Small gear; 344. Fixed motor; 345. Large gear; 346. Connecting frame; 4. Control circuit board; 5. Pressure sensor; 6. Temperature sensor; 7. Cleaning structure; 71. Groove; 72. Cleaning brush; 73. Limit spring. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Please see Figures 1-7 The present invention provides a fully automatic hydraulic self-centering center frame and its usage method, including a hydraulic center frame 1.

[0025] Reference Figures 1-7 As shown, the hydraulic center frame 1 consists of a housing 11, a drive cylinder 12, a chuck 13, rollers 14, a limit frame 15, and a lifting frame 16. The chuck 13 is hinged to the limit frame 15, and the limit frame 15 is hinged to the lifting frame 16. Rollers 14 are installed at the top of both the lifting frame 16 and the top of the chuck 13. The bottom of the lifting frame 16 is connected to the output end of the drive cylinder 12 at the bottom of the housing 11. Both the lifting frame 16 and the limit frame 15 are installed inside the housing 11. A pressure sensor 5 is installed inside the hydraulic chamber of the drive cylinder 12. A temperature sensor 6 is installed on the inner side of the upper end face of the jaw 13. A camera 2 is installed on the top of one side of the housing 11. The lens of the camera 2 faces the radial contour of the workpiece. A control circuit board 4 is installed on the inner wall of the housing 11. An auxiliary structure 3 is provided on the top of one end of both the jaw 13 and the lifting frame 16. The auxiliary structure 3 includes a protective cover 31 installed on the top of one end of the jaw 13 and the lifting frame 16 and a laser rangefinder 32 installed inside the protective cover 31. The laser rangefinder 32 is connected to the inner wall of the protective cover 31 through a shock-absorbing pad.

[0026] The auxiliary structure 3 also includes a baffle 33 and an adjustment component 34. The baffle 33 is symmetrically installed at one end of the protective cover 31. The baffle 33 has a semi-circular structure and is connected to the adjustment component 34. The adjustment component 34 includes a base 341, a half gear 342, a small gear 343, a fixed motor 344, a large gear 345, and a connecting frame 346. The base 341 is installed on one side of one end of the protective cover 31. The half gear 342 and the large gear 345 are respectively installed on both sides inside the base 341. The half gear 342 meshes with the large gear 345. The small gear 343 is installed on one side of the bottom inside the base 341. One end of the small gear 343 is connected to the output end of the fixed motor 344. The large gear 345 meshes with the small gear 343. The connecting frame 346 is installed on both the half gear 342 and the large gear 345. One end of the connecting frame 346 is fixedly connected to the bottom end of the baffle 33.

[0027] When the workpiece is not in position, the baffle 33 protects the laser rangefinder 32, preventing iron filings generated during workpiece processing from impacting it. When the workpiece is in position and centering is triggered, the fixed motor 344 starts, the pinion 343 drives the gear 345 to rotate, the gear 345 drives the half gear 342 to rotate, and the connecting bracket 346 moves the baffle 33. Adjusting the position of the baffle 33 exposes the laser rangefinder 32. Through the laser rangefinder 32, the outline of the workpiece can be quickly scanned, and the actual diameter can be calculated. The camera 2 assists in verifying whether the workpiece is round and free from obvious deformation. Based on the size of the workpiece, the stroke extension of the chuck 13 is calculated and transmitted to the microcontroller. The microcontroller processes the information and transmits it to the drive pneumatic system. Cylinder 12 is activated, driving the lifting frame 16 to move the limit frame 15, and the chuck 13 extends. At the same time, the pressure sensor 5 provides real-time feedback on the contact force and transmits the information to the microcontroller. When the preset clamping force threshold is reached, the microcontroller processes the information and transmits it to the driving cylinder 12, which then closes, and the chuck 13 stops moving, achieving adaptive centering and avoiding over-clamping deformation due to the inability to adaptively adjust the clamping force. The temperature sensor 6 monitors the temperature of the workpiece. If the temperature of the workpiece rises during processing, its diameter will expand slightly. The data fed back by the temperature sensor 6 is transmitted to the microcontroller, which processes the information and transmits it to the driving cylinder 12 to fine-tune the clamping force of the chuck 13, preventing centering accuracy drift.

[0028] Reference Figure 6 and Figure 7As shown, a cleaning structure 7 is provided on the inner side of the baffle 33. The cleaning structure 7 includes a groove 71, a cleaning brush 72 and a limiting spring 73. The grooves 71 are all opened on the inner side of the baffle 33. The limiting springs 73 are evenly installed inside the grooves 71. The limiting springs 73 are arranged at equal intervals inside the grooves 71. A cleaning brush 72 is installed on one end of each limiting spring 73. One end of the cleaning brush 72 is located inside the groove 71. The cleaning brush 72 and the limiting spring 73 form a telescopic structure.

[0029] The limiting spring 73 moves the cleaning brush 72 so that it contacts the lens of the laser rangefinder 32. During the movement of the baffle 33, the cleaning brush 72 can clean the lens of the laser rangefinder 32 to prevent dust from accumulating on the lens and affecting its performance.

[0030] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A fully automatic hydraulic self-centering center frame and its usage method, comprising a hydraulic center frame (1); Its features are: The hydraulic center frame (1) is composed of a shell (11), a drive cylinder (12), a chuck (13), a roller (14), a limit frame (15), and a lifting frame (16). The chuck (13) is hinged to the limit frame (15), and the limit frame (15) is hinged to the lifting frame (16). Rollers (14) are installed at the top of the lifting frame (16) and the top of the chuck (13). A pressure sensor (5) is installed inside the hydraulic chamber of the drive cylinder (12), a temperature sensor (6) is installed on the inner side of the upper end face of the claw (13), a camera (2) is installed on the top of one side of the outer shell (11), a control circuit board (4) is installed on the inner wall of the outer shell (11), and an auxiliary structure (3) is provided on the top of one end of both the claw (13) and the lifting frame (16). The auxiliary structure (3) includes a protective cover (31) installed on the top of one end of the claw (13) and the lifting frame (16) and a laser range sensor (32) disposed inside the protective cover (31).

2. The fully automatic hydraulic self-centering center frame and its method of use according to claim 1, characterized in that: The bottom end of the lifting frame (16) is connected to the output end of the driving cylinder (12) at the bottom end of the outer shell (11), and the lifting frame (16) and the limiting frame (15) are both installed inside the outer shell (11).

3. The fully automatic hydraulic self-centering center frame and its method of use according to claim 1, characterized in that: The lens of the camera (2) is oriented toward the radial profile of the workpiece.

4. The fully automatic hydraulic self-centering center frame and its method of use according to claim 1, characterized in that: The laser rangefinder (32) is connected to the inner wall of the protective cover (31) via a shock-absorbing pad.

5. The fully automatic hydraulic self-centering center frame and its method of use according to claim 1, characterized in that: The auxiliary structure (3) also includes a baffle (33) and an adjustment component (34). The baffle (33) is symmetrically installed at one end of the protective cover (31), and the baffle (33) is connected to the adjustment component (34). The adjustment assembly (34) includes a base (341), a half gear (342), a small gear (343), a fixed motor (344), a large gear (345), and a connecting frame (346). The base (341) is installed on one side of one end of the protective cover (31). The half gear (342) and the large gear (345) are respectively installed on both sides inside the base (341). The small gear (343) is installed on one side of the bottom inside the base (341). One end of the small gear (343) is connected to the output end of the fixed motor (344). The connecting frame (346) is installed on both the half gear (342) and the large gear (345). One end of the connecting frame (346) is fixedly connected to the bottom end of the baffle (33).

6. The fully automatic hydraulic self-centering center frame and its method of use according to claim 5, characterized in that: The baffle (33) has a semi-circular structure.

7. The fully automatic hydraulic self-centering center frame and its method of use according to claim 5, characterized in that: The half gear (342) meshes with the large gear (345), and the large gear (345) meshes with the small gear (343).

8. The fully automatic hydraulic self-centering center frame and its method of use according to claim 5, characterized in that: The inner side of each baffle (33) is provided with a cleaning structure (7). The cleaning structure (7) includes a groove (71), a cleaning brush (72) and a limiting spring (73). The grooves (71) are all opened on the inner side of the baffle (33). The limiting springs (73) are evenly installed inside the grooves (71), and a cleaning brush (72) is installed at one end of each limiting spring (73).

9. The fully automatic hydraulic self-centering center frame and its method of use according to claim 8, characterized in that: The limiting springs (73) are arranged at equal intervals inside the groove (71).

10. The fully automatic hydraulic self-centering center frame and its method of use according to claim 8, characterized in that: One end of the cleaning brush (72) is located inside the groove (71), and the cleaning brush (72) and the limiting spring (73) form a telescopic structure.

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