Ultrafine grinding integrated equipment for outer curved surface of workpiece

Abstract

The utility model relates to the technical field of outer curved surface grinding, in particular to workpiece outer curved surface ultra-fine grinding integrated equipment which comprises a grinding disc, a coarse grinding disc is movably arranged above the grinding disc, a fine grinding disc is movably arranged below the grinding disc, a plurality of upper grooves are formed in the bottom of the coarse grinding disc, and a plurality of coarse grinding grooves are formed in the top of the grinding disc. A plurality of upper grooves are formed in the top of the grinding disc, a plurality of coarse grinding grooves are formed in the top of the fine grinding disc, the coarse grinding grooves and the upper grooves are oppositely arranged, a plurality of lower grooves are formed in the top of the fine grinding disc, a plurality of fine grinding grooves are formed in the bottom of the grinding disc, the fine grinding grooves and the lower grooves are oppositely arranged, and the upper grooves, the coarse grinding grooves, the fine grinding grooves and the lower grooves are coaxially arranged. And a guide channel is arranged between the adjacent coarse grinding groove and fine grinding groove. The method has the effects of shortening the overall grinding treatment time of the spherical workpiece and improving the grinding treatment efficiency of the outer curved surface of the workpiece.

Description

Technical Field

[0001] The utility model relates to the technical field of outer curved surface grinding, in particular to an integrated device for super-finishing grinding of the outer curved surface of a workpiece. Background Art

[0002] At present, when grinding the outer surface of a spherical workpiece, the spherical workpiece is firstly rough-ground, then fine-ground, and finally the outer surface of the spherical workpiece is super-finished using a grinding fluid.

[0003] In the prior art, rough grinding, fine grinding and super-fine grinding use corresponding equipment. Therefore, when a grinding process of a spherical workpiece is completed, the spherical workpiece is first unloaded from this process, and then transferred to another equipment for loading, which increases the overall grinding process time of the spherical workpiece, making it difficult to improve the grinding process efficiency of the spherical workpiece. Utility Model Content

[0004] In order to shorten the overall grinding processing time of a spherical workpiece and improve the grinding processing efficiency of the outer curved surface of the workpiece, the present application provides an integrated device for ultra-precision grinding of the outer curved surface of the workpiece.

[0005] The present application provides an integrated ultra-precision grinding device for the outer curved surface of a workpiece, which adopts the following technical solution:

[0006] A device for ultra-finishing the outer curved surface of a workpiece comprises a grinding disc, a rough grinding disc is movably arranged above the grinding disc, a fine grinding disc is movably arranged below the grinding disc, a plurality of upper grooves are arranged at the bottom of the rough grinding disc, a plurality of rough grinding grooves are arranged at the top of the grinding disc, the rough grinding grooves are arranged opposite to the upper grooves, a plurality of lower grooves are arranged at the top of the fine grinding disc, a plurality of fine grinding grooves are arranged at the bottom of the grinding disc, the fine grinding grooves are arranged opposite to the lower grooves, the upper grooves, the rough grinding grooves, the fine grinding grooves and the lower grooves are all coaxially arranged, and a guide channel is arranged between adjacent rough grinding grooves and fine grinding grooves.

[0007] By adopting the above technical scheme, the spherical workpiece is placed between the rough grinding groove and the upper groove, and when the rough grinding disc and the grinding disc rotate relative to each other, the rough grinding disc revolution, the spherical workpiece rotation and the rotating centrifugal force are utilized to achieve the effect of rough grinding of the spherical workpiece. When the rough grinding of the spherical workpiece is completed, the spherical workpiece enters between the fine grinding groove and the lower groove through the guide channel, and when the fine grinding disc and the grinding disc rotate relative to each other, the fine grinding disc revolution, the spherical workpiece rotation and the rotating centrifugal force are utilized to achieve the effect of fine grinding of the spherical workpiece. When the fine grinding of the spherical workpiece is completed, a fine grinding agent composed of composite abrasives is sprayed onto the spherical workpiece, and at the same time, the fine grinding disc and the grinding disc continue to rotate relative to each other, so that the composite abrasive particles in the fine grinding agent perform super-fine grinding on the spherical workpiece, thereby in the grinding process of the spherical workpiece, the rough grinding equipment, the fine grinding equipment and the super-fine grinding equipment are integrated into one, the steps of transporting, loading and unloading the spherical workpiece between different equipment are omitted, the overall grinding process time of the spherical workpiece is shortened, and the grinding process efficiency of the spherical workpiece is improved.

[0008] Preferably, the rough grinding groove includes a rough grinding ring groove, and the upper groove includes an upper ring groove. The upper ring groove and the rough grinding ring groove are arranged opposite to each other, and the upper ring groove and the rough grinding ring groove together form a rough grinding channel.

[0009] By adopting the above technical solution, when the relative surfaces of the rough grinding disc and the grinding disc are in contact, the relatively arranged upper ring groove and the rough grinding ring groove form an annular rough grinding channel. At this time, the spherical workpiece rolls in the rough grinding channel, causing the outer wall of the spherical workpiece to rub against the inner wall of the rough grinding channel, thereby achieving the effect of rough grinding the outer curved surface of the spherical workpiece.

[0010] Preferably, the rough grinding groove also includes a rough grinding outlet, the side of the rough grinding outlet is communicated with the side wall of the rough grinding annular groove, the bottom end of the rough grinding outlet is communicated with the top of the guide channel, the upper groove also includes an upper outlet, the side of the upper outlet is communicated with the side of the upper annular groove, the upper outlet and the rough grinding outlet are arranged opposite to each other, and the upper outlet and the rough grinding outlet together form an output channel.

[0011] By adopting the above technical scheme, when the coarse grinding disc and the grinding disc are in contact with each other and the coarse grinding disc and the grinding disc are relatively rotating, the upper outlet and the coarse grinding outlet move relative to each other. When the upper outlet and the coarse grinding outlet are relatively arranged, the upper outlet and the coarse grinding outlet jointly form an output channel. When the upper outlet and the coarse grinding outlet jointly form the output channel, the spherical workpiece after rough grinding rolls from the output channel to the guide channel.

[0012] Preferably, the fine grinding groove includes a fine grinding ring groove, the lower groove includes a lower ring groove, the lower ring groove and the fine grinding ring groove are arranged opposite to each other, and the lower ring groove and the fine grinding ring groove together form a fine grinding channel.

[0013] By adopting the above technical solution, when the opposite surfaces of the fine grinding disc and the grinding disc are in contact, the relatively arranged lower ring groove and the fine grinding ring groove form an annular fine grinding channel. At this time, the spherical workpiece rolls in the fine grinding channel, causing the outer wall of the spherical workpiece to rub against the inner wall of the fine grinding channel, thereby achieving the effect of fine grinding the outer curved surface of the spherical workpiece.

[0014] Preferably, the fine grinding groove also includes a fine grinding inlet, the side of the fine grinding inlet is connected to the side wall of the fine grinding ring groove, the top of the fine grinding inlet is connected to the bottom of the guide channel, and the lower groove also includes a lower inlet, the side of the lower inlet is connected to the side of the lower ring groove, the lower inlet and the fine grinding inlet are arranged opposite to each other, and the lower inlet and the fine grinding inlet together form an input channel.

[0015] By adopting the above technical scheme, when the opposite surfaces of the fine grinding disc and the grinding disc are in contact and the fine grinding disc and the grinding disc are relatively rotating, the lower inlet and the fine grinding inlet move relative to each other. When the lower inlet and the fine grinding inlet are relatively arranged, the lower inlet and the fine grinding inlet jointly form an input channel. When the lower inlet and the fine grinding inlet jointly form the input channel, the spherical workpiece that has been rough-ground in the guide channel rolls from the input channel to the fine grinding channel.

[0016] Preferably, a frame is fixedly arranged on the side wall of the grinding disc, an upper lifting seat and a lower lifting seat are slidably arranged on the frame, an upper motor is fixedly arranged on the upper lifting seat, an output shaft of the upper motor is fixedly connected to the rough grinding disc, a lower motor is fixedly arranged on the lower lifting seat, and an output shaft of the lower motor is fixedly connected to the fine grinding disc.

[0017] By adopting the above technical solution, the upper lifting seat moves along the frame to drive the coarse grinding disc to slide in the height direction, the upper motor starts to drive the coarse grinding disc to rotate, the lower lifting seat moves along the frame to drive the fine grinding disc to slide in the height direction, and the lower motor starts to drive the fine grinding disc to rotate.

[0018] Preferably, an upper lifting cylinder is fixedly arranged on the frame, and the output shaft of the upper lifting cylinder is fixedly connected to the upper lifting seat; and a lower lifting cylinder is fixedly arranged on the frame, and the output shaft of the lower lifting cylinder is fixedly connected to the lower lifting seat.

[0019] By adopting the above technical solution, the output shaft of the upper lifting cylinder is extended and retracted to drive the upper lifting seat to move along the height direction of the frame, and the output shaft of the lower lifting cylinder is extended and retracted to drive the lower lifting seat to move along the height direction of the frame.

[0020] Preferably, a liquid storage cavity is provided in the grinding disc, a plurality of liquid outlet holes are provided at the bottom of the grinding disc, the liquid storage cavity and the liquid outlet holes are communicated with each other, and a liquid inlet pipe is provided on the liquid storage cavity.

[0021] By adopting the above technical solution, the liquid inlet pipe is connected with the lapping agent feeding end, the lapping agent feeding end injects the lapping agent into the liquid storage chamber through the liquid inlet pipe, and the lapping liquid in the liquid storage chamber is sprayed onto the spherical workpiece through the liquid outlet hole.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. By arranging a grinding disc, a rough grinding disc, a fine grinding disc, an upper groove, a rough grinding groove, a lower groove, a fine grinding groove and a guide channel, the rough grinding equipment, the fine grinding equipment and the super-finishing equipment are integrated into one, which omits the steps of transporting, loading and unloading the spherical workpiece between different equipments, shortens the overall grinding processing time of the spherical workpiece, and improves the grinding processing efficiency of the spherical workpiece;

[0024] 2. The lifting and rotating effects of the fine grinding disc and the coarse grinding disc can be achieved by setting an upper lifting seat, a lower lifting seat, an upper motor, a lower motor, an upper lifting cylinder and a lower lifting cylinder;

[0025] 3. By setting up a liquid storage chamber, a liquid outlet and a liquid inlet pipe, the lapping liquid can be sprayed onto the spherical workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of an integrated device for ultra-fine grinding of the outer curved surface of a workpiece in an embodiment of the present application.

[0027] Figure 2 It is a cross-sectional view showing the positional relationship between the rough grinding channel and the fine grinding channel in the embodiment of the present application.

[0028] Figure 3 It is a cross-sectional view showing the positional relationship between the input channel and the output channel in the embodiment of the present application.

[0029] Figure 4 It is a schematic diagram showing the positional relationship between the coarse grinding disc and the upper groove in the embodiment of the present application.

[0030] Figure 5 It is a schematic diagram showing the positional relationship between the grinding disc and the rough grinding groove in the embodiment of the present application.

[0031] Figure 6 It is a schematic diagram showing the positional relationship between the fine grinding disc and the lower groove in the embodiment of the present application.

[0032] Figure 7 It is a schematic diagram showing the positional relationship between the grinding disc and the fine grinding groove in the embodiment of the present application.

[0033] Figure 8 It is a cross-sectional view showing the positional relationship between the guide channel and the liquid storage chamber in the embodiment of the present application.

[0034] Explanation of the reference numerals: 1. grinding disc; 11. liquid storage chamber; 12. liquid outlet; 13. liquid inlet pipe; 2. coarse grinding disc; 21. coarse grinding channel; 3. fine grinding disc; 31. fine grinding channel; 4. upper groove; 41. upper ring groove; 42. upper outlet; 5. coarse grinding groove; 51. coarse grinding ring groove; 52. coarse grinding outlet; 6. lower groove; 61. lower ring groove; 62. lower inlet; 7. fine grinding groove; 71. fine grinding ring groove; 72. fine grinding inlet; 8. guide channel; 81. input channel; 82. output channel; 9. frame; 91. upper lifting seat; 911. upper motor; 912. upper lifting cylinder; 92. lower lifting seat; 921. lower motor; 922. lower lifting cylinder. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-8 This application is described in further detail.

[0036] The present application embodiment discloses an integrated device for ultra-finishing the outer curved surface of a workpiece. Figures 1 to 8 , comprising a grinding disc 1, a rough grinding disc 2 is movably arranged just above the grinding disc 1, and a fine grinding disc 3 is movably arranged just below the grinding disc 1. A plurality of upper grooves 4 are provided at the bottom of the rough grinding disc 2, and a plurality of rough grinding grooves 5 are provided at the top of the grinding disc 1, and the rough grinding grooves 5 are arranged opposite to the upper grooves 4. A plurality of lower grooves 6 are provided at the top of the fine grinding disc 3, and a plurality of fine grinding grooves 7 are provided at the bottom of the grinding disc 1, and the fine grinding grooves 7 are arranged opposite to the lower grooves 6. The upper grooves 4, the rough grinding grooves 5, the fine grinding grooves 7 and the lower grooves 6 are all coaxially arranged, and a guide channel 8 is provided between the adjacent rough grinding grooves 5 and the fine grinding grooves 7 in the vertical direction of height. A liquid storage chamber 11 is provided in the grinding disc 1, and a plurality of liquid outlets are provided at the bottom of the grinding disc 1, and the liquid storage chamber 11 is connected to the liquid outlet, and a liquid inlet pipe 13 is provided on the liquid storage chamber 11, and the liquid inlet pipe 13 is connected to the feeding end of the fine grinding agent. The spherical workpiece is placed between the rough grinding groove 5 and the upper groove 4. When the rough grinding disc 2 and the grinding disc 1 rotate relative to each other, the rough grinding disc 2 and the rotation of the spherical workpiece and the action principle of the rotating centrifugal force are utilized to achieve the effect of rough grinding of the spherical workpiece. After the rough grinding of the spherical workpiece is completed, the spherical workpiece enters between the fine grinding groove 7 and the lower groove 6 through the guide channel 8. When the fine grinding disc 3 and the grinding disc 1 rotate relative to each other, the fine grinding of the spherical workpiece is achieved by utilizing the revolution of the fine grinding disc 3 and the rotation of the spherical workpiece and the action principle of the rotating centrifugal force. After the fine grinding of the spherical workpiece is completed, the fine grinding agent composed of composite abrasives is injected into the liquid storage chamber 11 through the liquid inlet pipe 13, and the fine grinding liquid in the liquid storage chamber 11 is sprayed onto the spherical workpiece through the liquid outlet. At the same time, the fine grinding disc 3 and the grinding disc 1 continue to rotate relative to each other, so that the composite abrasive particles in the fine grinding agent perform super-fine grinding on the spherical workpiece. Therefore, in the grinding process of spherical workpieces, rough grinding equipment, fine grinding equipment and super-fine grinding equipment are integrated into one, which omits the steps of transporting, loading and unloading the spherical workpieces between different equipment, shortens the overall grinding process time of the spherical workpiece, and improves the grinding process efficiency of the spherical workpiece.

[0037] In order to achieve the effect of rough grinding of spherical workpieces, refer to Figures 2 to 5 The rough grinding groove 5 includes a rough grinding annular groove 51, and the upper groove 4 includes an upper annular groove 41. The upper annular groove 41 is arranged opposite to the rough grinding annular groove 51, and the upper annular groove 41 and the rough grinding annular groove 51 are arranged coaxially. The upper annular groove 41 and the rough grinding annular groove 51 together form a rough grinding channel 21. When the rough grinding disc 2 and the grinding disc 1 are in contact with each other, the upper annular groove 41 and the rough grinding annular groove 51 arranged opposite to each other form an annular rough grinding channel 21. At this time, the spherical workpiece rolls in the rough grinding channel 21, so that the outer wall of the spherical workpiece rubs against the inner wall of the rough grinding channel 21, thereby achieving the effect of rough grinding the outer curved surface of the spherical workpiece.

[0038] In order to achieve the effect of fine grinding of spherical workpieces, refer to Figures 2 to 8 The fine grinding groove 7 includes a fine grinding annular groove 71, and the lower groove 6 includes a lower annular groove 61. The lower annular groove 61 is arranged opposite to the fine grinding annular groove 71, and the lower annular groove 61 and the fine grinding annular groove 71 are arranged coaxially. The lower annular groove 61 and the fine grinding annular groove 71 together form a fine grinding channel 31. When the fine grinding disc 3 and the grinding disc 1 are in contact with each other, the lower annular groove 61 and the fine grinding annular groove 71 arranged opposite to each other form an annular fine grinding channel 31. At this time, the spherical workpiece rolls in the fine grinding channel 31, so that the outer wall of the spherical workpiece rubs against the inner wall of the fine grinding channel 31, thereby achieving the effect of fine grinding the outer curved surface of the spherical workpiece.

[0039] In order to make the ball milled workpiece in the rough grinding channel 21 enter the fine grinding channel 31, refer to Figures 2 to 8, the rough grinding groove 5 also includes a rough grinding outlet 52, the side of the rough grinding outlet 52 is interconnected with the side wall of the rough grinding annular groove 51, and the bottom of the rough grinding outlet 52 is interconnected with the top of the guide channel 8. The upper groove 4 also includes an upper outlet 42, the side of the upper outlet 42 is interconnected with the side of the upper annular groove 41. The upper outlet 42 is arranged opposite to the rough grinding outlet 52, and the upper outlet 42 and the rough grinding outlet 52 together form an output channel 82. The fine grinding groove 7 also includes a fine grinding inlet 72, the side of the fine grinding inlet 72 is interconnected with the side wall of the fine grinding annular groove 71, and the top of the fine grinding inlet 72 is interconnected with the bottom of the guide channel 8. The lower groove 6 also includes a lower inlet 62, the side of the lower inlet 62 is interconnected with the side of the lower annular groove 61. The lower inlet 62 is arranged opposite to the fine grinding inlet 72, and the lower inlet 62 and the fine grinding inlet 72 together form an input channel 81. When the coarse grinding disc 2 and the grinding disc 1 are in contact with each other and the coarse grinding disc 2 and the grinding disc 1 rotate relative to each other, the upper outlet 42 and the coarse grinding outlet 52 move relative to each other. When the upper outlet 42 and the coarse grinding outlet 52 are arranged relative to each other, the upper outlet 42 and the coarse grinding outlet 52 jointly form an output channel 82. When the upper outlet 42 and the coarse grinding outlet 52 jointly form an output channel 82, the spherical workpiece after coarse grinding rolls from the output channel 82 to the guide channel 8. When the fine grinding disc 3 and the grinding disc 1 are in contact with each other and the fine grinding disc 3 and the grinding disc 1 rotate relative to each other, the lower inlet 62 and the fine grinding inlet 72 move relative to each other. When the lower inlet 62 and the fine grinding inlet 72 are arranged relative to each other, the lower inlet 62 and the fine grinding inlet 72 jointly form an input channel 81. When the lower inlet 62 and the fine grinding inlet 72 jointly form an input channel 81, the spherical workpiece after coarse grinding in the guide channel 8 rolls from the input channel 81 to the fine grinding channel 31.

[0040] In order to achieve the lifting and rotating effect of the fine grinding disc 3 and the rough grinding disc 2, refer to Figure 1 , a frame 9 is installed on the outside of the grinding disc 1, and an upper lifting cylinder 912 and a lower lifting cylinder 922 are installed on the frame 9, and the output shaft of the upper lifting cylinder 912 and the output shaft of the lower lifting cylinder 922 are arranged oppositely. The upper lifting cylinder 912 is located above the rough grinding disc 2, and the upper lifting seat 91 is installed on the output shaft of the upper lifting cylinder 912. The upper motor 911 is installed on the top of the upper lifting seat 91, and the output shaft of the upper motor 911 passes through the upper lifting seat 91, and the output shaft of the upper motor 911 is connected to the top of the rough grinding disc 2. The lower lifting cylinder 922 is located below the fine grinding disc 3, and the lower lifting seat 92 is installed on the output shaft of the lower lifting cylinder 922. The lower motor 921 is installed at the bottom of the lower lifting seat 92, and the output shaft of the lower motor 921 passes through the lower lifting seat 92, and the output shaft of the lower motor 921 is connected to the bottom of the fine grinding disc 3. The output shaft of the upper lifting cylinder 912 is extended and retracted to drive the upper lifting seat 91 to move along the height direction of the frame 9, and the output shaft of the lower lifting cylinder 922 is extended and retracted to drive the lower lifting seat 92 to move along the height direction of the frame 9. The upper motor 911 is started to drive the rough grinding disc 2 to rotate, and the lower motor 921 is started to drive the fine grinding disc 3 to rotate.

[0041] The implementation principle of the integrated ultra-fine grinding device for the outer curved surface of a workpiece in the embodiment of the present application is as follows: the spherical workpiece is placed between the rough grinding groove 5 and the upper groove 4, and then the rough grinding disc 2 and the fine grinding disc 3 are moved toward the grinding disc 1 until the opposite surfaces of the rough grinding disc 2 and the fine grinding disc 3 are in contact. At this time, the upper ring groove 41 and the rough grinding ring groove 51 arranged relatively form an annular rough grinding channel 21, and the lower ring groove 61 and the fine grinding ring groove 71 arranged relatively form an annular fine grinding channel 31, and then the rough grinding disc 2 and the fine grinding disc 3 begin to rotate relative to the grinding disc 1. The outer wall of the spherical workpiece is rubbed against the inner wall of the rough grinding channel 21 to achieve the effect of rough grinding the outer curved surface of the spherical workpiece. In the process of relative rotation between the rough grinding disc 2 and the grinding disc 1, when the upper outlet 42 and the rough grinding outlet 52 jointly form an output channel 82, the spherical workpiece after rough grinding rolls from the output channel 82 into the guide channel 8. During the relative rotation between the fine grinding disc 3 and the grinding disc 1, when the lower inlet 62 and the fine grinding inlet 72 jointly form the input channel 81, the spherical workpiece that has been roughly ground in the guide channel 8 rolls down from the input channel 81 to the fine grinding channel 31. The outer wall of the spherical workpiece is rubbed against the inner wall of the fine grinding channel 31 to achieve the effect of fine grinding the outer curved surface of the spherical workpiece. When the fine grinding of the spherical workpiece is completed, the fine grinding agent composed of composite abrasives is injected into the liquid storage chamber 11 through the liquid inlet pipe 13, and the fine grinding liquid in the liquid storage chamber 11 is sprayed onto the spherical workpiece through the liquid outlet hole. At the same time, the fine grinding disc 3 and the grinding disc 1 continue to rotate relative to each other, so that the composite abrasive particles in the fine grinding agent perform super-fine grinding on the spherical workpiece. Therefore, in the grinding process of the spherical workpiece, the rough grinding equipment, the fine grinding equipment and the super-fine grinding equipment are integrated into one, and the steps of transporting, loading and unloading the spherical workpiece between different equipment are omitted, the overall grinding process time of the spherical workpiece is shortened, and the grinding process efficiency of the spherical workpiece is improved.

[0042] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An integrated device for ultra-finishing the outer curved surface of a workpiece, comprising a grinding disc (1), a rough grinding disc (2) movably arranged above the grinding disc (1), and a fine grinding disc (3) movably arranged below the grinding disc (1), characterized in that: The bottom of the rough grinding disc (2) is provided with a plurality of upper grooves (4), the top of the grinding disc (1) is provided with a plurality of rough grinding grooves (5), the rough grinding grooves (5) and the upper grooves (4) are arranged opposite to each other, the top of the fine grinding disc (3) is provided with a plurality of lower grooves (6), the bottom of the grinding disc (1) is provided with a plurality of fine grinding grooves (7), the fine grinding grooves (7) and the lower grooves (6) are arranged opposite to each other, the upper grooves (4), the rough grinding grooves (5), the fine grinding grooves (7) and the lower grooves (6) are all arranged coaxially, and a guide channel (8) is arranged between adjacent rough grinding grooves (5) and fine grinding grooves (7).

2. The device for ultra-finishing the outer curved surface of a workpiece according to claim 1, characterized in that: The rough grinding groove (5) comprises a rough grinding annular groove (51), the upper groove (4) comprises an upper annular groove (41), the upper annular groove (41) and the rough grinding annular groove (51) are arranged opposite to each other, and the upper annular groove (41) and the rough grinding annular groove (51) together form a rough grinding channel (21).

3. The device for ultra-finishing the outer curved surface of a workpiece according to claim 2, characterized in that: The rough grinding groove (5) further comprises a rough grinding outlet (52), the side of the rough grinding outlet (52) being in communication with the side wall of the rough grinding annular groove (51), the bottom end of the rough grinding outlet (52) being in communication with the top end of the guide channel (8), the upper groove (4) further comprises an upper outlet (42), the side of the upper outlet (42) being in communication with the side of the upper annular groove (41), the upper outlet (42) and the rough grinding outlet (52) being arranged opposite to each other, and the upper outlet (42) and the rough grinding outlet (52) together form an output channel (82).

4. The device for ultra-finishing the outer curved surface of a workpiece according to claim 1, characterized in that: The fine grinding groove (7) comprises a fine grinding annular groove (71), the lower groove (6) comprises a lower annular groove (61), the lower annular groove (61) and the fine grinding annular groove (71) are arranged opposite to each other, and the lower annular groove (61) and the fine grinding annular groove (71) together form a fine grinding channel (31).

5. The device for ultra-finishing the outer curved surface of a workpiece according to claim 4, characterized in that: The fine grinding groove (7) further comprises a fine grinding inlet (72), the side of the fine grinding inlet (72) is in communication with the side wall of the fine grinding annular groove (71), the top of the fine grinding inlet (72) is in communication with the bottom of the guide channel (8), the lower groove (6) further comprises a lower inlet (62), the side of the lower inlet (62) is in communication with the side of the lower annular groove (61), the lower inlet (62) and the fine grinding inlet (72) are arranged opposite to each other, and the lower inlet (62) and the fine grinding inlet (72) together form an input channel (81).

6. The device for ultra-finishing the outer curved surface of a workpiece according to claim 1, characterized in that: A frame (9) is fixedly arranged on the side wall of the grinding disc (1); an upper lifting seat (91) and a lower lifting seat (92) are slidably arranged on the frame (9); an upper motor (911) is fixedly arranged on the upper lifting seat (91); an output shaft of the upper motor (911) is fixedly connected to the rough grinding disc (2); a lower motor (921) is fixedly arranged on the lower lifting seat (92); an output shaft of the lower motor (921) is fixedly connected to the fine grinding disc (3).

7. The device for ultra-finishing the outer curved surface of a workpiece according to claim 6, characterized in that: An upper lifting cylinder (912) is fixedly arranged on the frame (9), and an output shaft of the upper lifting cylinder (912) is fixedly connected to an upper lifting seat (91). A lower lifting cylinder (922) is fixedly arranged on the frame (9), and an output shaft of the lower lifting cylinder (922) is fixedly connected to a lower lifting seat (92).

8. The device for ultra-finishing the outer curved surface of a workpiece according to claim 1, characterized in that: A liquid storage cavity (11) is provided in the grinding disc (1), a plurality of liquid outlet holes (12) are provided at the bottom of the grinding disc (1), the liquid storage cavity (11) and the liquid outlet holes (12) are communicated with each other, and a liquid inlet pipe (13) is provided in communication with the liquid storage cavity (11).

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