A grinding device and grinding method for nitrogen spring processing

Abstract

The present invention discloses a grinding device and a grinding method for nitrogen spring processing, and relates to the technical field of nitrogen spring processing. The grinding device for nitrogen spring processing comprises an inner frame, an outer frame, an outer grinding device arranged on one axial side of the outer frame, an inner grinding device arranged on the side of the outer frame close to the outer grinding device, and a moving device for driving the inner frame, the outer frame, the outer grinding device and the inner grinding device to move, wherein the outer grinding device comprises: an outer grinding block, wherein the outer grinding block is arranged in an annular array along the circumference of the inner frame, and the inner grinding device comprises an inner grinding block. The present application can integrate multiple outer grinding blocks and inner grinding blocks on the same device, so as to facilitate reciprocating rough grinding, fine grinding and polishing in sequence according to the grinding position and requirements, and has good use effect, is suitable for grinding cylinders or plunger rods of different radii, has high adaptability, is convenient for disassembly, replacement or maintenance of the inner grinding block, has a simple structure, and is easy to operate.

Description

Technical Field

[0001] The present invention relates to the technical field of nitrogen spring processing, and in particular to a grinding device and a grinding method for nitrogen spring processing. Background Art

[0002] A nitrogen spring is a mechanical device that uses compressed air or nitrogen as a medium to generate force. It is usually used in car seats, furniture, industrial equipment, and medical equipment. Its main function is to provide stable pressure support or motion control. During the production and processing of nitrogen springs, in order to improve their surface quality, functional performance, and production efficiency, and to ensure that they can function reliably in various applications, they usually need to be polished. Grinding can be used to adjust and optimize the surface roughness to meet the design requirements and reduce surface defects; it can be used to control and adjust the dimensional accuracy of the nitrogen spring to ensure that it is within the dimensional tolerance range required by the design for correct installation and use; it can remove the oxide layer, rust or other contaminants on the surface of the nitrogen spring to improve its surface finish and appearance quality; it can enhance its functional performance by improving the surface quality and shape of the nitrogen spring, such as improving its wear resistance and corrosion resistance during assembly.

[0003] The existing Chinese patent publication number is CN216633735U, and its name is a burr rapid grinding device for nitrogen spring processing, which includes a base, the base is a hollow structure, and two symmetrical baffles are fixedly connected to the top of the base. The baffles are hollow structures, and the two baffles are slidably connected to the same sliding plate on the side close to each other. This patent has a simple structure and is easy to use. The nitrogen spring can be fixed by rotating the bidirectional screw to ensure the stability of the nitrogen spring during grinding. The sliding plate can be positioned by the cooperation between the L-shaped positioning rod and the positioning groove to prevent the sliding plate from moving automatically.

[0004] The existing Chinese patent publication number is CN219094602U, and its name is a grinding machine for nitrogen spring processing, including a bottom plate, the upper side wall of the bottom plate is fixedly connected to a support seat, the upper side wall of the support seat is fixedly connected to a hydraulic cylinder, the output end of the hydraulic cylinder is fixedly connected to a nitrogen spring body through a clamping mechanism, and the upper side wall of the bottom plate is symmetrically fixedly connected to two vertical plates, and the side walls on the opposite sides of the two vertical plates are rotatably connected to a rotating rod. This patent can grind the outer wall of the nitrogen spring at the same time when grinding the nitrogen spring, instead of grinding it on one side at a time, thereby improving the efficiency of grinding burrs of the nitrogen spring, avoiding the problem that the nitrogen spring will have defects due to excessive pressure on one side during grinding, and can clamp the nitrogen spring quickly and conveniently, thereby improving the work efficiency of the operator.

[0005] However, in the above technologies, only one grinding tool can be used to grind the surface of the nitrogen spring. During the grinding process of the nitrogen spring, different grinding tools are required according to the grinding part, and the adaptability of the device is low. Therefore, we propose a grinding equipment and grinding method for nitrogen spring processing to solve the above problems. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a grinding device and a grinding method for nitrogen spring processing, which solves the problem that only one grinding tool can be used to grind the surface of the nitrogen spring and the device has low adaptability.

[0007] On the one hand, the present invention provides a grinding device for nitrogen spring processing, comprising an inner frame, an outer frame, an outer grinding device arranged on one axial side of the outer frame, an inner grinding device arranged on a side of the outer frame close to the outer grinding device, and a moving device for driving the inner frame, the outer frame, the outer grinding device and the inner grinding device to move, wherein: the outer grinding device comprises: outer grinding blocks, the outer grinding blocks are arranged in a ring array along the circumference of the inner frame, the outer grinding blocks are arranged in three groups, and the three groups of outer grinding blocks are coarse outer grinding blocks, fine outer grinding blocks and outer polishing blocks in sequence; an adjusting mechanism, the adjusting mechanism is used to adjust the position of each outer grinding block; the adjusting mechanism comprises: a first curved rod, one end of the first curved rod is mounted on the outer grinding block, and the other end of the first curved rod is rotatably mounted on the inner frame; a second curved rod, one end of the second curved rod is rotatably mounted on the inner frame Installed at the connecting end of the first curved rod and the outer grinding block; a transmission member, the transmission member is used to drive the other end of the second curved rod to swing along the circumference of the inner frame, so that the other end of the second curved rod pushes and pulls the outer grinding block; the outer grinding device also includes a driving mechanism, the driving mechanism includes a driving head, and the driving head can drive the transmission member to work; a second elastic member, the second elastic member is used to drive the driving head to engage and disengage with the transmission member, so that the driving head drives or does not drive the transmission member to work; the internal grinding device includes internal grinding blocks, the internal grinding blocks are arranged in three groups, and are respectively coarse internal grinding blocks, fine internal grinding blocks and internal polishing blocks; a turntable, the internal grinding blocks are arranged in a circumferential annular array along one axial side of the turntable; a second motor, the second motor is used to drive the turntable to rotate; an adjusting member, the adjusting member is arranged on the turntable, and the adjusting member is used to adjust the position of the inner grinding block.

[0008] Furthermore, the outer grinding block includes a first block portion and a first frame portion, the first block portion is mounted on the first frame portion, and the first frame portion is mounted on the first curved rod; a mounting groove is provided on the inner side of the inner frame, the first curved rod is rotatably mounted in the mounting groove at one end away from the outer grinding block, one end of the second curved rod is rotatably mounted at one end of the first curved rod close to the outer grinding block, the other end of the second curved rod is rotatably connected to a connecting rod, the connecting rod is connected to a sliding groove, the sliding groove is provided at one end of the inner frame away from the outer grinding block, the connecting rod extends to the outside of the inner frame, and is connected to the rotating part.

[0009] Furthermore, the transmission member includes a sliding plate, a first gear, a connecting plate and a slide plate, the sliding plate is half-enclosed and arranged outside the end of the inner frame away from the outer grinding block, the first gear is meshed and arranged between the sliding plate and the connecting plate, the connecting plate is slidably arranged in the outer frame, the first gear is rotatably installed in the outer frame, and the slide plate is installed on the connecting plate; the sliding plate, the connecting plate and the slide plate are all arc-shaped, and the lengths of the connecting plate and the slide plate are greater than the length of the sliding plate, and the outer side surface of the sliding plate and the inner side surface of the connecting plate are respectively linearly arrayed with tooth blocks; a strip groove is opened on one side of the connecting plate, and a tooth block is installed at the inner end of the outer frame body. An annular first slide rail, the three slide plates are all slidably connected to the first slide rail; sockets are provided on the connecting plate and the slide plate, and a first elastic member adapted to the connecting plate is provided inside the first slide rail along a circumferential annular array; the first elastic member includes a first spring portion and a first plug rod, the first spring portion is installed at one end of the first plug rod, the first plug rod extends from the inside of the first slide rail to the outside of the first slide rail, and passes through the socket on the slide plate, and extends to the socket on the connecting plate; an annular convex ring is provided on the outside of the inner frame, the sliding plate is slidably connected to the convex ring, and a groove adapted to the convex ring is provided on the inner side wall of the sliding plate.

[0010] Furthermore, the driving mechanism also includes a driving member for driving the driving head to rotate; the driving member includes a mounting frame and a first motor located in the mounting frame, the driving head is installed at the output end of the first motor, and the driving head is arranged on the side of the mounting frame away from the inner frame body; sliders are respectively installed on the upper and lower ends of the mounting frame by screws, and a second annular slide rail is installed on the inner wall of the outer frame body, and the two sliders are slidably connected to the second slide rail.

[0011] Furthermore, an annular gear ring is installed on the inner wall of the outer frame, the driving head is a second gear, and the second gear is meshingly arranged on the gear ring; a fixing sleeve is installed on the side of the mounting frame away from the second gear by a screw, and the second elastic member is slidably arranged in the fixing sleeve, and the second elastic member includes a second spring portion and a second plug rod adapted to the socket, the second spring portion is installed at one end of the second plug rod and is arranged in the fixing sleeve; it also includes two magnetic blocks, one of the magnetic blocks is a first magnetic block, the first magnetic block is an electromagnetic block, the first magnetic block is installed in the fixing sleeve at one end away from the mounting frame, and the other magnetic block is a second magnetic block, and the second magnetic block is installed in the other end of the fixing sleeve.

[0012] Furthermore, the adjusting member includes a hydraulic rod and a connecting member installed thereon, the connecting member is installed on the end of the hydraulic rod by screws, the hydraulic rod is installed on the back of the turntable by screws, and the other end of the connecting member is installed on the inner grinding block; the connecting member is slidably connected to the adjusting groove, and the adjusting groove is opened on the turntable; the turntable is installed on the output end of the second motor, the second motor is connected to a fixing frame by screws, the fixing frame is installed on the base by screws, and the turntable is semicircular.

[0013] Further, the connecting member includes a first mounting rod, a second mounting rod and a sleeve block, the second mounting rod is installed on the end of the inner grinding block away from the inner frame, the first mounting rod is clamped with the second mounting rod, and the sleeve block is threadedly sleeved on the outside of the connection between the first mounting rod and the second mounting rod; the first mounting rod includes a first connecting portion, a first rod body and a first clamping portion, the first connecting portion and the first clamping portion are respectively arranged at both ends of the first rod body, the first connecting portion is installed on the upper end of the hydraulic rod by screws, and the first rod body passes through the adjustment slot; the second mounting rod includes a second connecting portion and a second rod body installed on one end thereof, the second rod body is installed on the end of the inner grinding block away from the inner frame, the first connecting portion is clamped and connected with the second connecting portion, and the sleeve block is threadedly sleeved on the outside of the first connecting portion and the second connecting portion.

[0014] Furthermore, the moving device includes a base, a linear motor and a connecting seat, the base is slidably arranged on the connecting seat and is installed on the linear motor by screws, and the linear motor is installed on the connecting seat, so that the outer grinding block and the inner grinding block can grind the external nitrogen spring; the inner frame and the outer frame are both annular, and the bottom of the inner frame and the outer frame are respectively provided with brackets, and the two brackets are installed on the base by screws; the linear motor includes a sliding part and a guide rail, the sliding part is pressed on the bottom of the base by screws, the connecting seat includes a mounting seat and a guide rod installed thereon, the guide rail is installed on the mounting seat, and the base is sleeved on the guide rod.

[0015] On the other hand, the present invention provides a grinding method for nitrogen spring processing, comprising the following steps:

[0016] S1. Select the cylinder body of the nitrogen spring to be polished, clamp and fix the cylinder body to be polished by the external clamping and rotating device, operate the linear motor to move the outer polishing block and the inner polishing block, the outer polishing block moves to the outside of the cylinder body, the inner polishing block moves to the inside of the cylinder body, and then stop moving to obtain the axial initial position of the outer polishing block and the inner polishing block in the cylinder body;

[0017] S2, the first motor operates, the second gear rotates, and under the sliding connection between the slider and the second slide rail, the second elastic member is driven to move, so that the second elastic member is connected to the connecting plate outside the rough outer grinding block and the jack on the slide plate, the first elastic member contracts, and the first motor continues to operate, driving the connecting plate to move, and through the first gear and the sliding plate inside the connecting plate, the second crankshaft is driven to swing, so that the first crankshaft drives the rough outer grinding block to move, until the rough outer grinding block is in contact with the outer wall of the cylinder body, stops moving, and obtains the radial initial position of the rough outer grinding block in the cylinder body;

[0018] S3, the hydraulic rod drives the coarse inner grinding block to move upward until the coarse inner grinding block is in contact with the inner wall of the cylinder body, and then stops moving to obtain the radial initial position of the coarse inner grinding block in the cylinder body;

[0019] S4, the clamping and rotating device drives the cylinder body to rotate, and the inner wall and outer surface thereof are roughly polished. During the polishing process, the linear motor drives the outer polishing block and the inner polishing block to move from the initial position to the side close to the cylinder body, and reciprocates and polishes the inside and outside of the cylinder body;

[0020] S5. When the rough grinding is finished, the linear motor controls the structure above it to reset and separate from the cylinder body. The first motor operates in the reverse direction to drive the connecting plate outside the rough outer grinding block to reset through the second elastic member. The second elastic member retracts and the first elastic member corresponding to the connecting plate resets to limit it.

[0021] S6, the first motor continues to drive the second elastic member to move, passing through the connecting plate outside the coarse outer grinding block, and moving to the connecting plate outside the fine outer grinding block, and connecting to the jack thereon, repeating the operation, adjusting the position of the fine outer grinding block until it is in contact with the outer wall of the cylinder body, and the second motor drives the turntable to rotate, so that the fine inner grinding block moves downward, repeating the operation, so that the fine inner grinding block is in contact with the inner wall of the cylinder body, and the cylinder body rotates for fine grinding;

[0022] S7. Similarly, the outer polishing block is controlled to contact with the outer wall of the cylinder body, and the inner polishing block is controlled to contact with the inner wall of the cylinder body, so as to polish the inside and outside of the cylinder body.

[0023] In a third aspect, the present invention further provides a grinding method for nitrogen spring processing, comprising the following steps:

[0024] S1. Select the plunger rod of the nitrogen spring to be polished, and the second motor drives the turntable to rotate so that the arc surface of the turntable is completely moved to the upward position, so that the polishing path of the plunger rod is not blocked by the inner polishing block;

[0025] S2. The plunger rod to be polished is clamped and fixed by an external clamping and rotating device, and the linear motor is operated to move the external polishing block, and the external polishing block moves to the outside of the plunger rod, and then stops moving to obtain the axial initial position of the external polishing block on the plunger rod;

[0026] S3, the first motor operates, the second gear rotates, and under the sliding connection between the slider and the second slide rail, the second elastic member is driven to move, so that the second elastic member is connected to the connecting plate outside the rough outer grinding block and the jack on the slide plate, the first elastic member contracts, and the first motor continues to operate, driving the connecting plate to move, and through the first gear and the sliding plate inside the connecting plate, the second crankshaft is driven to swing, so that the first crankshaft drives the rough outer grinding block to move, until the rough outer grinding block is in contact with the outer wall of the plunger rod, stops moving, and obtains the radial initial position of the rough outer grinding block on the plunger rod;

[0027] S4, the clamping and rotating device drives the plunger rod to rotate, and roughly grinds the outer surface thereof. During the grinding process, the linear motor drives the outer grinding block to move from the initial position to the side close to the plunger rod, and reciprocates and grinds the outer surface of the plunger rod;

[0028] S5. When the rough grinding is finished, the linear motor controls the structure above it to reset and separate from the plunger rod. The first motor operates in the reverse direction, and drives the connecting plate outside the rough outer grinding block to reset through the second elastic member. The second elastic member retracts, and the first elastic member corresponding to the connecting plate resets to limit it.

[0029] S6, the first motor continues to drive the second elastic member to move, passing through the connecting plate outside the coarse external grinding block, and moving to the connecting plate outside the fine external grinding block, and connecting to the jack thereon, repeating the operation, adjusting the position of the fine external grinding block until it is in contact with the outer wall of the plunger rod, and the plunger rod rotates to perform fine grinding;

[0030] S7. Similarly, control the outer polishing block to contact the outer wall of the plunger rod to polish the outer surface of the plunger rod.

[0031] The present invention has the following beneficial effects:

[0032] (1) The grinding device and grinding method for nitrogen spring processing can integrate the rough outer grinding block, fine outer grinding block, outer polishing block, rough inner grinding block, fine inner grinding block and inner polishing block into the same device through the coordinated use of the inner frame, outer frame, first crankshaft, second crankshaft, transmission member, drive head, drive member, second elastic member, magnetic block, turntable, adjustment member and second motor, so as to facilitate the reciprocating rough grinding, fine grinding and polishing of the cylinder body and plunger rod of the nitrogen spring in sequence according to the grinding position and requirements. The device has high adaptability and good use effect.

[0033] (2) The grinding device and grinding method for nitrogen spring processing, through the use of the sliding plate, the first gear, the connecting plate, the sliding plate, the first slide rail, the driving head, the driving member, the second elastic member, the magnetic block member, the first elastic member, the hydraulic rod, the adjusting groove and the connecting member, are convenient for adjusting the positions of the outer grinding block and the inner grinding block according to the outer diameter and inner diameter of the cylinder body of the nitrogen spring and the outer diameter of the plunger rod, and are suitable for grinding cylinder bodies or plunger rods of different radii, and the device has high adaptability;

[0034] (3) The grinding device and grinding method for nitrogen spring processing are used in combination with the first mounting rod, the second mounting member and the sleeve block, so that the inner grinding block can be disassembled, replaced or maintained according to the use requirements. The structure is simple and easy to operate.

[0035] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the structure of the present invention;

[0037] Figure 2 It is a schematic diagram of the structure inside the outer frame of the present invention;

[0038] Figure 3 It is a structural schematic diagram of the first gear and the sliding plate of the present invention;

[0039] Figure 4 It is a schematic structural diagram of the first curved rod and the second curved rod of the present invention;

[0040] Figure 5 It is a schematic structural diagram of the first elastic member and the plug hole of the present invention;

[0041] Figure 6 It is a schematic structural diagram of the second elastic member and the plug hole of the present invention;

[0042] Figure 7 It is a schematic diagram of the structure inside the fixing sleeve of the present invention;

[0043] Figure 8It is a structural schematic diagram of the turntable and the first mounting rod of the present invention;

[0044] Fig. 9 It is a schematic diagram of the structure after the first mounting rod and the second mounting rod of the present invention are separated;

[0045] Fig.10 It is a structural schematic diagram of the base and the linear motor of the present invention;

[0046] Fig.11 For the present invention Figure 2 The structural diagram at A in the middle;

[0047] Fig.12 For the present invention Figure 3 Schematic diagram of the structure at B in the figure.

[0048] In the figure, 1, inner frame; 2, outer frame; 301, coarse outer grinding block; 302, fine outer grinding block; 303, outer polishing block; 4, first curved rod; 5, second curved rod; 6, connecting rod; 7, sliding plate; 8, sliding groove; 9, mounting groove; 10, convex ring; 11, groove; 12, first gear; 13, connecting plate; 14, jack; 15, slide plate; 16, first slide rail; 17, first elastic member; 18, first motor; 19, mounting frame; 20, second gear; 21, Slider; 22, gear ring; 23, second slide rail; 24, fixed sleeve; 25, second elastic member; 26, first magnetic block; 27, second magnetic block; 28, bracket; 29, turntable; 30, hydraulic rod; 31, first mounting rod; 32, second mounting rod; 33, sleeve block; 341 coarse internal grinding block; 342, fine internal grinding block; 343, internal polishing block; 35, adjustment slot; 36, second motor; 37, fixed frame; 38, base; 39, linear motor; 40, connecting seat. DETAILED DESCRIPTION

[0049] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0050] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0051] See also Figure 1-Figure 12 On the one hand, the present invention provides a grinding device for nitrogen spring processing, comprising an inner frame 1, an outer frame 2, an external grinding device arranged on one axial side of the outer frame 2, an internal grinding device arranged on a side of the outer frame 2 close to the external grinding device, and a moving device for driving the inner frame 1, the outer frame 2, the external grinding device and the internal grinding device to move, wherein: the external grinding device comprises: external grinding blocks, the external grinding blocks are arranged in a ring array along the circumference of the inner frame 1, and the external grinding blocks are arranged in three groups, and the three groups of external grinding blocks are respectively a coarse external grinding block 301, a fine external grinding block 302 and an external polishing block 303; an adjusting mechanism, the adjusting mechanism is used to adjust the position of each external grinding block; the adjusting mechanism comprises: a first curved rod 4, one end of the first curved rod 4 is mounted on the external grinding block, and the other end of the first curved rod 4 is rotatably mounted on the inner frame 1; a second curved rod 5, one end of the second curved rod 5 is rotatably mounted At the connecting end of the first curved rod 4 and the outer grinding block; a transmission member, the transmission member is used to drive the other end of the second curved rod 5 to swing circumferentially along the inner frame 1, so that the other end of the second curved rod 5 pushes and pulls the outer grinding block; the external grinding device also includes a driving mechanism, the driving mechanism includes a driving head, and the driving head can drive the transmission member to work; the second elastic member 25, the second elastic member 25 is used to drive the driving head to engage or disengage with the transmission member, so that the driving head drives or does not drive the transmission member to work; the internal grinding device includes internal grinding blocks, and the internal grinding blocks are arranged in three groups, which are coarse internal grinding blocks 341, fine internal grinding blocks 342 and internal polishing blocks 343 respectively; a turntable 29, the internal grinding blocks are arranged in a circumferential annular array along one axial side of the turntable 29; a second motor 36, the second motor 36 is used to drive the turntable 29 to rotate; an adjusting member, the adjusting member is arranged on the turntable 29, and the adjusting member is used to adjust the position of the internal grinding block.

[0052] Specifically, the outer grinding block includes a first block portion and a first frame portion, the first block portion is installed on the first frame portion, and the first frame portion is installed on the first curved rod 4; an installation groove 9 is opened on the inner side of the inner frame 1, and the first curved rod 4 is rotatably installed in the installation groove 9 at one end away from the outer grinding block, and the second curved rod 5 is rotatably installed at one end of the first curved rod 4 close to the outer grinding block, and the other end of the second curved rod 5 is rotatably connected to a connecting rod 6, and the connecting rod 6 is connected to a sliding groove 8. The sliding groove 8 is opened at the end of the inner frame 1 away from the outer grinding block, and the connecting rod 6 extends to the outside of the inner frame 1 and is connected to the rotating part.

[0053] In this embodiment, the connecting rod 6 is fixedly mounted on the sliding plate 7. When the sliding plate 7 moves, the second curved rod 5 is driven to swing through the connecting rod 6. The connecting rod 6 slides in the sliding groove 8. The second curved rod 5 drives the first curved rod 4 to rotate, thereby causing the outer grinding block to move toward the side close to the workpiece to be polished, so that the outer grinding block is in contact with the outer wall of the workpiece to be polished, which is convenient for subsequent external grinding of the workpiece to be polished and is suitable for workpieces to be polished with different radii.

[0054] Specifically, the transmission member includes a sliding plate 7, a first gear 12, a connecting plate 13 and a slide plate 15. The sliding plate 7 is half-enclosed and arranged outside the end of the inner frame 1 away from the outer grinding block. The first gear 12 is meshed and arranged between the sliding plate 7 and the connecting plate 13. The connecting plate 13 is slidably arranged in the outer frame 2. The first gear 12 is rotatably installed in the outer frame 2, and the slide plate 15 is installed on the connecting plate 13; the sliding plate 7, the connecting plate 13 and the slide plate 15 are all arc-shaped, and the lengths of the connecting plate 13 and the slide plate 15 are greater than the length of the sliding plate 7. The outer side surface of the sliding plate 7 and the inner side surface of the connecting plate 13 are respectively linearly arrayed with tooth blocks; a strip groove is opened on one side of the connecting plate 13, and a ring-shaped first gear is installed on the inner end of the outer frame 2 A slide rail 16, and three slide plates 15 are all slidably connected to the first slide rail 16; a socket 14 is provided on the connecting plate 13 and the slide plate 15, and a first elastic member 17 adapted to the connecting plate 13 is provided in a circumferential annular array inside the first slide rail 16; the first elastic member 17 includes a first spring portion and a first plug rod, and the first spring portion is installed at one end of the first plug rod, and the first plug rod extends from the inside of the first slide rail 16 to the outside of the first slide rail 16, and passes through the socket 14 on the slide plate 15, and extends to the socket 14 on the connecting plate 13; an annular convex ring 10 is provided on the outside of the inner frame 1, and the sliding plate 7 is slidably connected to the convex ring 10, and a groove 11 adapted to the convex ring 10 is provided on the inner side wall of the sliding plate 7.

[0055] In this embodiment, the connecting plate 13 and the slide plate 15 are an integral structure, the first slide rail 16 is welded and arranged inside the outer frame 2, the first gear 12 is installed in the outer frame 2 through a bearing, the convex ring 10 and the inner frame 1 are an integral structure, the second elastic member 25 squeezes the first elastic member 17, so that the first elastic member 17 is separated from the socket 14, and the second elastic member 25 moves. Under the connection between the slide plate 15 and the first slide rail 16, the connecting plate 13 connected thereto is driven to move, and the end of the first plug rod in the first elastic member 17 is in contact with the inner wall of the slide plate 15, the connecting plate 13 is meshed and connected with the first gear 12, and the first gear 12 rotates. Under the limiting guidance of the convex ring 10, the sliding plate 7 moves to drive the second curved rod 5 to swing, thereby adjusting the position of the external grinding block.

[0056] When the grinding is finished and the connecting plate 13 is reset, the second elastic member 25 is reset, the first spring portion drives the first plug rod to reset, and the first plug rod is re-inserted into the insertion hole 14 on the slide plate 15 and the connecting plate 13 to limit the connecting plate 13 and the slide plate 15.

[0057] Specifically, the driving mechanism also includes a driving member for driving the driving head to rotate; the driving member includes a mounting frame 19 and a first motor 18 located in the mounting frame 19, the driving head is installed at the output end of the first motor 18, and the driving head is arranged on the side of the mounting frame 19 away from the inner frame body 1; the upper and lower ends of the mounting frame 19 are respectively installed with sliders 21 by screws, and an annular second slide rail 23 is installed on the inner side wall of the outer frame body 2, and the two sliders 21 are both slidably connected with the second slide rail 23, and an annular gear ring 22 is installed on the inner side wall of the outer frame body 2, the driving head is a second gear 20, and the second gear 20 is meshed with the gear set On the ring 22; a fixing sleeve 24 is installed by screws on the side of the mounting frame 19 away from the second gear 20, and a second elastic member 25 is slidably arranged in the fixing sleeve 24. The second elastic member 25 includes a second spring portion and a second plug rod adapted to the socket 14, and the second spring portion is installed at one end of the second plug rod and is arranged in the fixing sleeve 24; it also includes two magnetic blocks, one magnetic block is a first magnetic block 26, and the first magnetic block 26 is an electromagnetic block. The first magnetic block 26 is installed in the fixing sleeve 24 at one end away from the mounting frame 19, and the other magnetic block is a second magnetic block 27, and the second magnetic block 27 is installed in the other end of the fixing sleeve 24.

[0058] In this embodiment, the first motor 18 drives the second gear 20 to rotate. Under the connection between the slider 21 and the second slide rail 23, the mounting frame 19 drives the second elastic member 25 to move. The second elastic member 25 moves in the strip groove on the connecting plate 13, so that the second elastic member 25 moves to the socket 14 on the connecting plate 13 corresponding to the outside of the external grinding block to be adjusted. The second plug rod end of the second elastic member 25 is made of metal. The first magnetic block 26 is energized, so that the second plug rod moves toward the side close to it, the second spring part is stretched and separated from the second magnetic block 27, and the second plug rod is connected to the first magnetic block 26, so that the second plug rod is inserted into the socket 14, squeezing the first plug rod so that the first plug rod is separated from the socket 14, and then the connecting plate 13 can be moved. When the connecting plate 13 is reset, the first magnetic block 26 is de-energized, the second spring part drives the second plug rod to reset, and the second plug rod is connected to the second magnetic block 27 to limit the second plug rod to avoid rebound, which affects the limiting position of the first plug rod on the connecting plate 13.

[0059] Specifically, the adjusting member includes a hydraulic rod 30 and a connecting member installed thereon, the connecting member is installed at the end of the hydraulic rod 30 by screws, the hydraulic rod 30 is installed on the back of the turntable 29 by screws, and the other end of the connecting member is installed on the inner grinding block; the connecting member is slidably connected to the adjusting slot 35, and the adjusting slot 35 is provided on the turntable 29; the turntable 29 is installed on the output end of the second motor 36, the second motor 36 is connected to a fixing bracket 37 by screws, and the fixing bracket 37 is installed on the base 38 by screws, the turntable 29 is semicircular, and the connecting member includes a first mounting rod 31, a second mounting rod 32 and a sleeve block 33, and the second mounting rod 32 is installed on the inner grinding block away from the inner frame 1. The first mounting rod 31 is clamped with the second mounting rod 32, and the sleeve block 33 is threadedly sleeved on the outside of the connection between the first mounting rod 31 and the second mounting rod 32; the first mounting rod 31 includes a first connecting portion, a first rod body and a first clamping portion, the first connecting portion and the first clamping portion are respectively arranged at both ends of the first rod body, the first connecting portion is installed on the upper end of the hydraulic rod 30 by screws, and the first rod body passes through the adjustment groove 35; the second mounting rod 32 includes a second connecting portion and a second rod body installed at one end thereof, the second rod body is installed at the end of the inner grinding block away from the inner frame 1, the first connecting portion and the second connecting portion are clamped and connected, and the sleeve block 33 is threadedly sleeved on the outside of the first connecting portion and the second connecting portion.

[0060] In this embodiment, the inner grinding block located at the bottom is arranged on the same straight line as the center of the inner frame 1. The inner wall of the cylinder body is coarsely ground, finely ground and polished as needed. The turntable 29 is driven to rotate by the second motor 36 to select the grinding head. When the selected inner grinding block is in place, the hydraulic rod 30 drives the inner grinding block to move upward, and the first mounting rod 31 moves in the adjustment groove 35 until the inner grinding block is in contact with the inner wall of the cylinder body. The adjustment is stopped and subsequent grinding operations can be performed. When the plunger rod needs to be ground, the second motor 36 drives the turntable 29 to rotate so that the arc surface of the turntable 29 faces upward to avoid obstruction to the grinding of the plunger rod.

[0061] When the inner grinding block needs to be replaced or maintained, the sleeve block 33 is rotated to separate the sleeve block 33 from the second mounting rod 32 and moved to the first mounting rod 31 , and the second mounting rod 32 and the inner grinding block are removed.

[0062] Specifically, the moving device includes a base 38, a linear motor 39 and a connecting seat 40. The base 38 is slidably set on the connecting seat 40 and is installed on the linear motor 39 by screws. The linear motor 39 is installed on the connecting seat 40, so that the outer grinding block and the inner grinding block can grind the external nitrogen spring; the inner frame 1 and the outer frame 2 are both annular, and the bottom of the inner frame 1 and the outer frame 2 are respectively provided with brackets 28, and the two brackets 28 are installed on the base 38 by screws; the linear motor 39 includes a sliding part and a guide rail, and the sliding part is pressed on the bottom of the base 38 by screws. The connecting seat 40 includes a mounting seat and a guide rod installed thereon, the guide rail is installed on the mounting seat, and the base 38 is sleeved on the guide rod.

[0063] In this embodiment, when the cylinder body is polished, the cylinder body to be polished is clamped and fixed by an external clamping and rotating device, and the linear motor 39 is operated. Under the limit guidance of the guide rod, the base 38 is moved to drive the outer polishing block and the inner polishing block to move. The outer polishing block moves to the outside of the cylinder body, and the inner polishing block moves to the inside of the cylinder body. Then, the clamping and rotating device drives the cylinder body to rotate to polish its inner wall and outer surface. During the polishing process, the linear motor 39 drives the outer polishing block and the inner polishing block to move toward the side close to the cylinder body, and the inner and outer surfaces of the cylinder body are polished. Reciprocating grinding is performed. When the plunger rod is grinded, the plunger rod to be grinded is clamped and fixed by an external clamping and rotating device, and the linear motor 39 is operated. Under the limit guidance of the guide rod, the base 38 is moved, driving the outer grinding block and the inner grinding block to move. The outer grinding block moves to the outside of the cylinder body, and the inner grinding block does not contact the plunger rod. Then the clamping and rotating device drives the plunger rod to rotate and grind its outer surface. During the grinding process, the linear motor 39 drives the outer grinding block to move toward the side close to the plunger rod to grind the plunger rod reciprocatingly.

[0064] On the other hand, the present invention provides a grinding method for nitrogen spring processing, comprising the following steps:

[0065] S1. Select the cylinder body of the nitrogen spring to be polished, clamp and fix the cylinder body to be polished by the external clamping and rotating device, operate the linear motor 39, move the outer polishing block and the inner polishing block, move the outer polishing block to the outside of the cylinder body, move the inner polishing block to the inside of the cylinder body, and then stop moving to obtain the axial initial position of the outer polishing block and the inner polishing block in the cylinder body;

[0066] S2, the first motor 18 operates, the second gear 20 rotates, and under the sliding connection between the slider 21 and the second slide rail 23, the second elastic member 25 is driven to move, so that the second elastic member 25 is connected to the connecting plate 13 outside the rough outer grinding block 301 and the jack 14 on the slide plate 15, the first elastic member 17 contracts, and the first motor 18 continues to operate, driving the connecting plate 13 to move, and through the first gear 12 and the sliding plate 7 inside the connecting plate 13, the second crankshaft 5 is driven to swing, so that the first crankshaft 4 drives the rough outer grinding block 301 to move, until the rough outer grinding block 301 is attached to the outer wall of the cylinder body, stops moving, and obtains the radial initial position of the rough outer grinding block 301 in the cylinder body;

[0067] S3, the hydraulic rod 30 drives the rough inner grinding block 341 to move upward until the rough inner grinding block 341 is in contact with the inner wall of the cylinder body, and then stops moving, thereby obtaining the radial initial position of the rough inner grinding block 341 in the cylinder body;

[0068] S4, the clamping and rotating device drives the cylinder body to rotate, and the inner wall and outer surface thereof are roughly polished. During the polishing process, the linear motor 39 drives the outer polishing block and the inner polishing block to move from the initial position to the side close to the cylinder body, and reciprocates and polishes the inside and outside of the cylinder body;

[0069] S5. When the rough grinding is finished, the linear motor 39 controls the structure above it to reset and separate from the cylinder body. The first motor 18 operates in the reverse direction, and drives the connecting plate 13 outside the rough outer grinding block 301 to reset through the second elastic member 25. The second elastic member 25 retracts, and the first elastic member 17 corresponding to the connecting plate 13 resets to limit it.

[0070] S6, the first motor 18 continues to drive the second elastic member 25 to move, passing through the connecting plate 13 outside the coarse outer grinding block 301, and moves to the connecting plate 13 outside the fine outer grinding block 302, and connects with the jack 14 thereon, repeats the operation, adjusts the position of the fine outer grinding block 302 until it is in contact with the outer wall of the cylinder body, and the second motor 36 drives the turntable 29 to rotate, so that the fine inner grinding block 342 moves downward, repeats the operation, so that the fine inner grinding block 342 is in contact with the inner wall of the cylinder body, and the cylinder body rotates for fine grinding;

[0071] S7. Similarly, the outer polishing block 303 is controlled to contact with the outer wall of the cylinder body, and the inner polishing block 343 is controlled to contact with the inner wall of the cylinder body, so as to polish the inside and outside of the cylinder body.

[0072] In a third aspect, the present invention further provides a grinding method for nitrogen spring processing, comprising the following steps:

[0073] S1. Select the plunger rod of the nitrogen spring to be polished, and the second motor 36 drives the turntable 29 to rotate, so that the arc surface of the turntable 29 is completely moved to the upward position, so that the polishing path of the plunger rod is not blocked by the inner polishing block;

[0074] S2, the plunger rod to be polished is clamped and fixed by the external clamping and rotating device, and the linear motor 39 is operated to move the external polishing block, and the external polishing block moves to the outside of the plunger rod, and then stops moving, so as to obtain the axial initial position of the external polishing block on the plunger rod;

[0075] S3, the first motor 18 operates, the second gear 20 rotates, and under the sliding connection between the slider 21 and the second slide rail 23, the second elastic member 25 is driven to move, so that the second elastic member 25 is connected to the connecting plate 13 outside the rough outer grinding block 301 and the jack 14 on the slide plate 15, the first elastic member 17 contracts, and the first motor 18 continues to operate, driving the connecting plate 13 to move, and through the first gear 12 and the sliding plate 7 inside the connecting plate 13, the second crankshaft 5 is driven to swing, so that the first crankshaft 4 drives the rough outer grinding block 301 to move, until the rough outer grinding block 301 is in contact with the outer wall of the plunger rod, stops moving, and obtains the radial initial position of the rough outer grinding block 301 on the plunger rod;

[0076] S4, the clamping and rotating device drives the plunger rod to rotate, and roughly grinds its outer surface. During the grinding process, the linear motor 39 drives the outer grinding block to move from the initial position to the side close to the plunger rod, and reciprocates to grind the outer surface of the plunger rod;

[0077] S5. When the rough grinding is finished, the linear motor 39 controls the structure above it to reset and separate from the plunger rod. The first motor 18 operates in the reverse direction, and drives the connecting plate 13 outside the rough outer grinding block 301 to reset through the second elastic member 25. The second elastic member 25 retracts, and the first elastic member 17 corresponding to the connecting plate 13 resets to limit it.

[0078] S6, the first motor 18 continues to drive the second elastic member 25 to move, passing through the connecting plate 13 outside the rough outer grinding block 301, and moving to the connecting plate 13 outside the fine outer grinding block 302, and connecting with the jack 14 thereon, repeating the operation, adjusting the position of the fine outer grinding block 302 until it is in contact with the outer wall of the plunger rod, and the plunger rod rotates for fine grinding;

[0079] S7. Similarly, the outer polishing block 303 is controlled to contact the outer wall of the plunger rod to polish the outer surface of the plunger rod.

[0080] When in use, select the cylinder body or plunger rod of the nitrogen spring that needs to be polished. If it is a cylinder body polishing, the cylinder body to be polished is clamped and fixed by an external clamping and rotating device, and the linear motor 39 is operated to move the outer polishing block and the inner polishing block. The outer polishing block moves to the outside of the cylinder body, and the inner polishing block moves to the inside of the cylinder body, and then stops moving. The first motor 18 is operated, and the second gear 20 rotates. Under the connection between the slider 21 and the second slide rail 23, the mounting frame 19 drives the second elastic member 25 to move, and the second elastic member 25 moves in the strip groove on the connecting plate 13, so that the second elastic member 25 moves in the strip groove on the connecting plate 13. The elastic member 25 moves the outer side of the rough outer grinding block 301 to the corresponding socket 14 on the connecting plate 13, the first magnetic block 26 is energized, so that the second plug rod moves toward the side close to it, the second spring portion is stretched and separated from the second magnetic block 27, the second plug rod is connected to the first magnetic block 26, so that the second plug rod is inserted into the socket 14, squeezing the first plug rod so that the first plug rod is separated from the socket 14, the first motor 18 continues to operate, driving the connecting plate 13 to move, and the end of the first plug rod in the first elastic member 17 is attached to the inner wall of the slide plate 15, the connecting plate 13 is meshed and connected with the first gear 12, and the first gear 12 is meshed and connected. The wheel 12 rotates, and under the limit guidance of the convex ring 10, the sliding plate 7 moves to drive the second curved rod 5 to swing, and the second curved rod 5 drives the first curved rod 4 to rotate, so that the rough outer grinding block 301 moves toward the side close to the cylinder body, so that the rough outer grinding block 301 is in contact with the outer wall of the cylinder body, and the hydraulic rod 30 drives the rough inner grinding block 341 to move upward, and the first mounting rod 31 moves in the adjustment groove 35 until the rough inner grinding block 341 is in contact with the inner wall of the cylinder body, and the adjustment is stopped. The clamping and rotating device drives the cylinder body to rotate, and the inner wall and outer surface are roughly ground. During the grinding process, the linear electric The machine 39 drives the outer grinding block and the inner grinding block to move toward the side close to the cylinder body, and performs reciprocating grinding on the inside and outside of the cylinder body. After the rough grinding is completed, the linear motor 39 controls the structure above it to reset, and the rough outer grinding block 301 and the rough inner grinding block 341 are separated from the cylinder body. The first motor 18 operates in the opposite direction, and drives the connecting plate 13 outside the rough outer grinding block 301 to reset through the second elastic member 25. The first magnetic block 26 is powered off, and the second spring part drives the second plug rod to reset. The second plug rod is connected to the second magnetic block 27, and the first elastic member 17 corresponding to the connecting plate 13 is reset to limit the connecting plate 13.

[0081] Then the first motor 18 continues to drive the second elastic member 25 to move, and the second insertion rod slides through the strip groove on the connecting plate 13 outside the coarse outer grinding block 301, moves to the strip groove on the connecting plate 13 outside the fine outer grinding block 302, and connects with the jack 14 thereon, and repeats the operation to adjust the position of the fine outer grinding block 302 until it is in contact with the outer wall of the cylinder body. The second motor 36 drives the turntable 29 to rotate, so that the fine inner grinding block 342 moves to the bottom, and repeats the operation so that the fine inner grinding block 342 is in contact with the inner wall of the cylinder body, and the cylinder body rotates for fine grinding. Similarly, the outer polishing block 303 is controlled to contact with the outer wall of the cylinder body, and the inner polishing block 343 is controlled to contact with the inner wall of the cylinder body, and the inside and outside of the cylinder body are polished.

[0082] If the plunger rod is to be polished, the second motor 36 drives the turntable 29 to rotate so that the arc surface of the turntable 29 is completely moved to the upward position, so that the polishing path of the plunger rod is not blocked by the inner polishing block. The above operation is repeated so that the three outer polishing blocks contact the outer wall of the plunger rod in turn, and the rough polishing, fine polishing and polishing of the plunger rod are completed in turn.

[0083] In summary, the present application, through the use of the inner frame 1, the outer frame 2, the first curved rod 4, the second curved rod 5, the transmission member, the drive head, the drive member, the second elastic member 25, the magnetic block member, the turntable 29, the adjustment member and the second motor 36, can integrate the rough outer grinding block 301, the fine outer grinding block 302, the outer polishing block 303, the rough inner grinding block 341, the fine inner grinding block 342 and the inner polishing block 343 on the same device, so that the cylinder body and the plunger rod of the nitrogen spring can be reciprocated in sequence for rough grinding, fine grinding and polishing according to the grinding location and requirements. The device has high adaptability and good use effect.

[0084] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0085] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A grinding device for nitrogen spring processing, characterized in that: The invention comprises an inner frame (1), an outer frame (2), an outer grinding device arranged on one axial side of the outer frame (2), an inner grinding device arranged on a side of the outer frame (2) close to the outer grinding device, and a moving device for driving the inner frame (1), the outer frame (2), the outer grinding device and the inner grinding device to move, wherein: The external grinding device comprises: external grinding blocks, the external grinding blocks are arranged in a ring array along the circumference of the inner frame (1), the external grinding blocks are provided in three groups, and the three groups of external grinding blocks are respectively a coarse external grinding block (301), a fine external grinding block (302) and an external polishing block (303); an adjustment mechanism, the adjustment mechanism is used to adjust the position of each external grinding block; The adjustment mechanism comprises: a first curved rod (4), one end of which is mounted on the outer grinding block, and the other end of which is rotatably mounted on the inner frame (1); a second curved rod (5), one end of which is rotatably mounted on the connecting end of the first curved rod (4) and the outer grinding block; and a transmission member, the transmission member being used to drive the other end of the second curved rod (5) to swing along the circumference of the inner frame (1), so that the other end of the second curved rod (5) pushes and pulls the outer grinding block; The external grinding device further comprises a driving mechanism, wherein the driving mechanism comprises a driving head, wherein the driving head is capable of driving the transmission member to work; a second elastic member (25), wherein the second elastic member (25) is used to drive the driving head to engage or disengage with the transmission member, so that the driving head drives or does not drive the transmission member to work; The internal grinding device comprises internal grinding blocks, wherein the internal grinding blocks are provided in three groups, and are respectively a coarse internal grinding block (341), a fine internal grinding block (342), and an internal polishing block (343); a rotating disk (29), wherein the internal grinding blocks are arranged in a circumferential annular array along one axial side of the rotating disk (29); a second motor (36), wherein the second motor (36) is used to drive the rotating disk (29) to rotate; and an adjusting member, wherein the adjusting member is provided on the rotating disk (29), and the adjusting member is used to adjust the position of the internal grinding blocks.

2. A grinding device for nitrogen spring processing according to claim 1, characterized in that: The outer grinding block comprises a first block portion and a first frame portion, the first block portion is mounted on the first frame portion, and the first frame portion is mounted on a first curved rod (4); The inner side of the inner frame (1) is provided with a mounting groove (9); one end of the first curved rod (4) away from the outer grinding block is rotatably mounted in the mounting groove (9); one end of the second curved rod (5) is rotatably mounted on an end of the first curved rod (4) close to the outer grinding block; the other end of the second curved rod (5) is rotatably connected to a connecting rod (6); the connecting rod (6) is connected to a sliding groove (8); the sliding groove (8) is provided at an end of the inner frame (1) away from the outer grinding block; the connecting rod (6) extends to the outside of the inner frame (1) and is connected to the rotating member.

3. A grinding device for nitrogen spring processing according to claim 2, characterized in that: The transmission member comprises a sliding plate (7), a first gear (12), a connecting plate (13) and a sliding plate (15); the sliding plate (7) is half-enclosed and arranged outside an end of the inner frame (1) away from the outer grinding block; the first gear (12) is meshingly arranged between the sliding plate (7) and the connecting plate (13); the connecting plate (13) is slidably arranged in the outer frame (2); the first gear (12) is rotatably mounted in the outer frame (2); and the sliding plate (15) is mounted on the connecting plate (13); The sliding plate (7), the connecting plate (13) and the sliding plate (15) are all arc-shaped, and the lengths of the connecting plate (13) and the sliding plate (15) are greater than the length of the sliding plate (7), and the outer side surface of the sliding plate (7) and the inner side surface of the connecting plate (13) are respectively provided with tooth blocks in a linear array; A strip groove is formed on one side of the connecting plate (13); a first annular slide rail (16) is installed at the inner end of the outer frame (2); and the three slide plates (15) are all slidably connected to the first slide rail (16); The connecting plate (13) and the sliding plate (15) are both provided with insertion holes (14), and the first sliding rail (16) has first elastic members (17) adapted to the connecting plate (13) in a circular array along its circumference. The first elastic member (17) comprises a first spring portion and a first insertion rod, the first spring portion is mounted on one end of the first insertion rod, the first insertion rod extends from the inside of the first slide rail (16) to the outside of the first slide rail (16), passes through the insertion hole (14) on the slide plate (15), and extends to the insertion hole (14) on the connecting plate (13); An annular convex ring (10) is arranged outside the inner frame (1), the sliding plate (7) is slidably connected to the convex ring (10), and a groove (11) matching the convex ring (10) is provided on the inner side wall of the sliding plate (7).

4. The grinding device for nitrogen spring processing according to claim 3 is characterized in that: The driving mechanism also includes a driving member for driving the driving head to rotate; The driving member comprises a mounting frame (19) and a first motor (18) located in the mounting frame (19); the driving head is mounted at an output end of the first motor (18), and the driving head is arranged on a side of the mounting frame (19) away from the inner frame body (1); Slide blocks (21) are respectively installed at the upper and lower ends of the installation frame (19) by means of screws, and a second slide rail (23) in the form of an annular shape is installed on the inner side wall of the outer frame body (2), and both of the two slide blocks (21) are slidably connected to the second slide rail (23).

5. The grinding equipment for nitrogen spring processing according to claim 4 is characterized in that: An annular gear ring (22) is mounted on the inner side wall of the outer frame (2); the drive head is a second gear (20), and the second gear (20) is meshedly arranged on the gear ring (22); A fixing sleeve (24) is installed on the side of the installation frame (19) away from the second gear (20) by means of screws, and the second elastic member (25) is slidably arranged in the fixing sleeve (24), the second elastic member (25) comprising a second spring portion and a second insertion rod adapted to the insertion hole (14), the second spring portion being installed at one end of the second insertion rod and being arranged in the fixing sleeve (24); It also includes two magnetic block components, one of which is a first magnetic block (26), which is an electromagnetic block, and is mounted inside the fixing sleeve (24) at one end away from the mounting frame (19), and the other of which is a second magnetic block (27), which is mounted inside the fixing sleeve (24) at the other end.

6. The grinding equipment for nitrogen spring processing according to claim 1, characterized in that: The adjusting member comprises a hydraulic rod (30) and a connecting member mounted thereon, the connecting member being mounted on the end of the hydraulic rod (30) by means of screws, the hydraulic rod (30) being mounted on the back of the turntable (29) by means of screws, and the other end of the connecting member being mounted on the inner grinding block; the connecting member being slidably connected to an adjusting groove (35), the adjusting groove (35) being provided on the turntable (29); The rotating disk (29) is mounted on the output end of the second motor (36); the second motor (36) is connected to a fixing frame (37) via screws; the fixing frame (37) is mounted on a base (38) via screws; and the rotating disk (29) is semicircular.

7. A grinding device for nitrogen spring processing according to claim 6, characterized in that: The connecting member comprises a first mounting rod (31), a second mounting rod (32) and a sleeve block (33); the second mounting rod (32) is mounted on an end of the inner grinding block away from the inner frame (1); the first mounting rod (31) is clamped with the second mounting rod (32); and the sleeve block (33) is threadedly sleeved on the outside of the connection between the first mounting rod (31) and the second mounting rod (32); The first mounting rod (31) comprises a first connecting portion, a first rod body and a first clamping portion, the first connecting portion and the first clamping portion are respectively arranged at two ends of the first rod body, the first connecting portion is mounted on the upper end of the hydraulic rod (30) by means of screws, and the first rod body passes through the adjustment slot (35); The second mounting rod (32) comprises a second connecting portion and a second rod body mounted at one end thereof, the second rod body being mounted at an end of the inner grinding block away from the inner frame (1), the first connecting portion being snap-connected with the second connecting portion, and the sleeve block (33) being threadedly sleeved on the outside of the first connecting portion and the second connecting portion.

8. A grinding device for nitrogen spring processing according to any one of claims 1 to 7, characterized in that: The moving device comprises a base (38), a linear motor (39) and a connecting seat (40); the base (38) is slidably arranged on the connecting seat (40) and is mounted on the linear motor (39) by means of screws; the linear motor (39) is mounted on the connecting seat (40), so that the outer grinding block and the inner grinding block can grind the outer nitrogen spring; The inner frame (1) and the outer frame (2) are both in the shape of a ring, and brackets (28) are respectively provided at the bottom of the inner frame (1) and the bottom of the outer frame (2), and the two brackets (28) are both mounted on the base (38) by means of screws; The linear motor (39) comprises a sliding part and a guide rail, the sliding part is pressed onto the bottom of the base (38) by means of screws, the connecting seat (40) comprises a mounting seat and a guide rod mounted thereon, the guide rail is mounted on the mounting seat, and the base (38) is sleeved on the guide rod.

9. A grinding method for nitrogen spring processing, applied to the grinding device for nitrogen spring processing as claimed in any one of claims 1 to 8, characterized in that: The following steps are involved: S1, selecting the cylinder body of the nitrogen spring to be polished, clamping and fixing the cylinder body to be polished by an external clamping and rotating device, operating the linear motor (39), so that the outer polishing block and the inner polishing block move, the outer polishing block moves to the outside of the cylinder body, the inner polishing block moves to the inside of the cylinder body, and then stops moving, and obtains the axial initial position of the outer polishing block and the inner polishing block in the cylinder body; S2, the first motor (18) operates, the second gear (20) rotates, and under the sliding connection between the slider (21) and the second slide rail (23), the second elastic member (25) is driven to move, so that the second elastic member (25) is connected to the connecting plate (13) outside the rough outer grinding block (301) and the socket (14) on the slide plate (15), the first elastic member (17) contracts, and the first motor (18) continues to operate, driving the connecting plate (13) to move, and through the first gear (12) and the sliding plate (7) inside the connecting plate (13), the second crankshaft (5) is driven to swing, so that the first crankshaft (4) drives the rough outer grinding block (301) to move, until the rough outer grinding block (301) is in contact with the outer wall of the cylinder body and stops moving, thereby obtaining the radial initial position of the rough outer grinding block (301) in the cylinder body; S3, the hydraulic rod (30) drives the coarse inner grinding block (341) to move upward until the coarse inner grinding block (341) is in contact with the inner wall of the cylinder body, and then stops moving, thereby obtaining the radial initial position of the coarse inner grinding block (341) in the cylinder body; S4, the clamping and rotating device drives the cylinder body to rotate, and the inner wall and outer surface thereof are roughly polished. During the polishing process, the linear motor (39) drives the outer polishing block and the inner polishing block to move from the initial position to the side close to the cylinder body, and reciprocatingly polishes the inside and outside of the cylinder body; S5. When the rough grinding is completed, the linear motor (39) controls the structure above it to reset and separate from the cylinder body, and the first motor (18) operates in the reverse direction to drive the connecting plate (13) outside the rough outer grinding block (301) to reset through the second elastic member (25). The second elastic member (25) retracts, and the first elastic member (17) corresponding to the connecting plate (13) is reset to limit the position thereof; S6, the first motor (18) continues to drive the second elastic member (25) to move, passing through the connecting plate (13) outside the coarse outer grinding block (301), to the connecting plate (13) outside the fine outer grinding block (302), and to connect with the socket (14) thereon, and repeat the operation to adjust the position of the fine outer grinding block (302) until it is in contact with the outer wall of the cylinder body, and the second motor (36) drives the rotating disk (29) to rotate, so that the fine inner grinding block (342) moves downward, and repeat the operation to make the fine inner grinding block (342) in contact with the inner wall of the cylinder body, and the cylinder body rotates to perform fine grinding; S7. Similarly, the outer polishing block (303) is controlled to contact the outer wall of the cylinder body, and the inner polishing block (343) is controlled to contact the inner wall of the cylinder body, so as to polish the inside and outside of the cylinder body.

10. A grinding method for nitrogen spring processing, applied to the grinding device for nitrogen spring processing as claimed in any one of claims 1 to 8, characterized in that: The following steps are involved: S1. Selecting the plunger rod of the nitrogen spring to be polished, the second motor (36) drives the turntable (29) to rotate, so that the arc surface of the turntable (29) is completely moved to an upward position, so that the polishing path of the plunger rod is not blocked by the inner polishing block; S2, the plunger rod to be polished is clamped and fixed by an external clamping and rotating device, and the linear motor (39) is operated to move the external polishing block, and the external polishing block moves to the outside of the plunger rod, and then stops moving, so as to obtain the axial initial position of the external polishing block on the plunger rod; S3, the first motor (18) operates, the second gear (20) rotates, and under the sliding connection between the slider (21) and the second slide rail (23), the second elastic member (25) is driven to move, so that the second elastic member (25) is connected to the connecting plate (13) outside the rough outer grinding block (301) and the plug hole (14) on the slide plate (15), the first elastic member (17) contracts, and the first motor (18) continues to operate, driving the connecting plate (13) to move, and through the first gear (12) and the sliding plate (7) inside the connecting plate (13), the second crankshaft (5) is driven to swing, so that the first crankshaft (4) drives the rough outer grinding block (301) to move, until the rough outer grinding block (301) is in contact with the outer wall of the plunger rod and stops moving, thereby obtaining the radial initial position of the rough outer grinding block (301) on the plunger rod; S4, the clamping and rotating device drives the plunger rod to rotate, and the outer surface of the plunger rod is roughly polished. During the polishing process, the linear motor (39) drives the outer polishing block to move from the initial position to the side close to the plunger rod, and the outer surface of the plunger rod is reciprocatedly polished; S5. When the rough grinding is completed, the linear motor (39) controls the structure above it to reset and separate from the plunger rod, and the first motor (18) operates in the reverse direction to drive the connecting plate (13) outside the rough outer grinding block (301) to reset through the second elastic member (25). The second elastic member (25) retracts, and the first elastic member (17) corresponding to the connecting plate (13) resets and limits it; S6, the first motor (18) continues to drive the second elastic member (25) to move, passing through the connecting plate (13) outside the coarse external grinding block (301), and moving to the connecting plate (13) outside the fine external grinding block (302), and connecting to the socket (14) thereon, and repeating the operation to adjust the position of the fine external grinding block (302) until it is in contact with the outer wall of the plunger rod, and the plunger rod is rotated to perform fine grinding; S7. Similarly, the outer polishing block (303) is controlled to contact the outer wall of the plunger rod to polish the outer surface of the plunger rod.

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