Clamping structure for outer circle grinding process of sealing ring

Abstract

The utility model relates to a sealing ring outer circle grinding process clamping structure which comprises a working table, the working table is provided with a sealing ring positioning mechanism and a sealing ring pressing mechanism, and the sealing ring positioning mechanism is located on the periphery of the sealing ring pressing mechanism. The sealing ring positioning mechanism comprises supporting blocks, and the multiple supporting blocks are annularly distributed on the workbench. A support is mounted on the supporting block; an elastic positioning sleeve is placed on the support, a sealing ring is placed in the elastic positioning sleeve, and the bottom of the sealing ring abuts against the support; the sealing ring pressing mechanism comprises a pull rod, an upper pressing plate and a blocking cover, a guide sleeve is installed on the workbench, a center hole is formed below the guide sleeve, the middle of the pull rod slides in the guide sleeve and the center hole, and the bottom of the pull rod is connected with an oil cylinder. The clamp is novel in structure and can be automatically centered; operation is simple and convenient, and work efficiency is improved; and the practicability and the application universality of the numerical control vertical grinding machine are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of grinder clamps and relates to a clamping structure for a sealing ring outer circle grinding process. Background Art

[0002] The sealing ring is a key part in the ship engine, and the outer circle processing of the sealing ring is a key process for this part. At present, the sealing ring is a thin-walled elastic ring with a notch 29-1 (such as Figure 1 ), the opening in the free state is 40-60mm, and the outer circle processing is the key process of this part. At present, the processing procedure of this part adopts the grinding process to achieve the final accuracy of the outer circle. Because the outer shape of the sealing ring is irregular under the action of elastic deformation after slotting, the clamp is the difficulty of the current technology. The existing processing method of the outer circle of the sealing ring is to tighten the inner hole without slotting, position the end face, grind the outer circle with an outer circle grinding wheel, and then slot after meeting the process requirements. Due to the high elasticity of the material of this part, the accuracy of the outer circle of the part is destroyed under the action of elastic deformation after the notch is opened. This processing method has poor accuracy and affects the working accuracy of the equipment. Summary of the invention

[0003] The utility model aims to provide a clamping structure for a sealing ring outer circle grinding process, which can solve the above-mentioned problems and improve the work efficiency.

[0004] According to the technical solution provided by the utility model: a clamping structure for the outer circle grinding process of a sealing ring includes a workbench, which is characterized in that the workbench is provided with a sealing ring positioning mechanism and a sealing ring pressing mechanism, and the sealing ring positioning mechanism is located at the outer periphery of the sealing ring pressing mechanism; the sealing ring positioning mechanism includes a supporting block, and several supporting blocks are distributed in a ring shape on the workbench; a support is installed on the supporting block; an elastic positioning sleeve is placed on the support, and a sealing ring is placed in the elastic positioning sleeve, and the bottom of the sealing ring is against the support; the sealing ring pressing mechanism includes a pull rod, an upper pressure plate, and a baffle cover, and a guide sleeve is installed on the workbench, a center hole is opened below the guide sleeve, the middle part of the pull rod slides in the guide sleeve and the center hole, the bottom of the pull rod is connected to the oil cylinder, and the oil cylinder drives the pull rod to move up and down; the top of the pull rod is connected to the connecting rod through a second set screw, and the upper end of the connecting rod extends out of the guide sleeve and is threadedly connected to the nut; the upper pressure plate and the baffle cover are located between the nut and the sealing ring.

[0005] As a further improvement of the utility model, the elastic positioning sleeve is provided with an elastic through groove, in which a slot gasket is installed, and matching screw holes and pin holes are provided on both sides of the elastic through groove of the elastic positioning sleeve and on the slot gasket, and the elastic positioning sleeve and the slot gasket are connected by a first screw and a positioning pin.

[0006] As a further improvement of the utility model, matching positioning surfaces are provided on the support and the elastic positioning sleeve; the outer circle of the sealing ring and the inner wall of the elastic positioning sleeve are the matching positioning surfaces.

[0007] As a further improvement of the utility model, a support plate is provided on the outer periphery of the elastic positioning sleeve, a pressure plate is installed on the top surface of the support plate, the support plate is horizontally threadedly connected to the sealing ring radial adjustment bolt, and the pressure plate is threadedly connected to the sealing ring press-in bolt.

[0008] As a further improvement of the utility model, a T-slot is provided on the workbench, a T-nut is slidably installed in the T-slot, a plurality of support blocks are distributed in a ring shape, and the support blocks are connected to the T-nut via a sixth screw.

[0009] The positive effects of this application are:

[0010] The utility model has novel structure, automatic centering of the clamp, simple and convenient operation, improved work efficiency, and improved practicability and wide application of the CNC vertical grinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the sealing ring of the utility model.

[0012] Figure 2 It is a structural schematic diagram of the utility model.

[0013] Figure 3 It is a schematic diagram of the structure of the utility model during grinding.

[0014] Figure 1-Figure 3 It includes a workbench 1, a supporting block 2, a support 3, a first screw 4, a positioning pin 5, an elastic positioning sleeve 6, a gasket in a groove 7, a pad 8, an upper pressure plate 9, a guide sleeve 10, a baffle 11, a first fastening screw 12, a nut 13, a connecting rod 14, a second fastening screw 15, a second screw 16, a third screw 17, a pressure plate 18, a fourth screw 19, a supporting plate 20, a fifth screw 21, a T-nut 22, a sixth screw 23, a sealing ring 24, a pull rod 25, a cover plate 26, a seventh screw 27, an eighth screw 28, etc. DETAILED DESCRIPTION

[0015] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0016] In order to enable those skilled in the art to better understand the solution of the utility model, the following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0017] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so as to describe the embodiments of the utility model described herein. In addition, similar terms such as "including" and "having" mean that in addition to those contents already listed in "including" and "having", other contents that have not been listed can also be "included" and "having"; for example, a process, method, system, product or device that can include a series of steps or units is not necessarily limited to those steps or units that have been clearly listed, but can include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0018] Due to the angle of the drawing, some components may not be drawn, but their positions and connection relationships can be partially understood based on the text expression.

[0019] like Figure 2 As shown, the utility model is a clamping structure for a sealing ring outer circle grinding process, comprising a workbench 1, wherein the workbench 1 is provided with a sealing ring positioning mechanism and a sealing ring pressing mechanism, wherein the sealing ring positioning mechanism is located at the periphery of the sealing ring pressing mechanism.

[0020] The sealing ring positioning mechanism includes a support block 2, and several support blocks 2 are distributed in a ring shape on the workbench 1. The support block 2 is installed with a support 3. An elastic positioning sleeve 6 is placed on the support 3, and the elastic positioning sleeve 6 has an elastic through groove, and a slot gasket 7 is installed in the elastic through groove. The elastic positioning sleeve 6 has matching screw holes and pin holes on both sides of the elastic through groove and the slot gasket 7. The elastic positioning sleeve 6 and the slot gasket 7 are connected by the first screw 4 and the positioning pin 5. A sealing ring 29 is placed in the elastic positioning sleeve 6, and the bottom of the sealing ring 29 is against the support 3.

[0021] In order to improve the positioning accuracy, matching positioning surfaces are provided on the support 3 and the elastic positioning sleeve 6. The outer circle of the sealing ring 29 and the inner wall of the elastic positioning sleeve 6 are matching positioning surfaces.

[0022] In order to facilitate the installation of the sealing ring 29 into the elastic positioning sleeve 6, a support plate 20 is provided on the outer periphery of the elastic positioning sleeve 6, and a pressure plate 18 is installed on the top surface of the support plate 20. The support plate 20 is horizontally threadedly connected to the sealing ring radial adjustment bolt 16-1, and the pressure plate 18 is threadedly connected to the sealing ring press-in bolt 16-2.

[0023] A T-slot is provided on the workbench 1 , and a T-nut 22 is slidably installed in the T-slot. A plurality of support blocks 2 are distributed in a ring shape, and the support blocks 2 are connected to the T-nut 22 via a sixth screw 23 .

[0024] The sealing ring clamping mechanism includes a pull rod 25, an upper pressure plate 9, and a baffle 11. A guide sleeve 10 is installed on the workbench 1. A center hole is opened below the guide sleeve 10. The middle of the pull rod 25 slides in the guide sleeve 10 and the center hole. The bottom of the pull rod 25 is connected to the oil cylinder, and the oil cylinder drives the pull rod 25 to move up and down. The top of the pull rod 25 is connected to the connecting rod 14 through the second set screw 15. The upper end of the connecting rod 14 extends out of the guide sleeve 10 and is threadedly connected to the nut 13. The upper pressure plate 9 and the baffle 11 are located between the nut 13 and the sealing ring 29.

[0025] In this embodiment, two sealing rings 29 are clamped at one time, and a gasket 8 is placed between the two sealing rings 29 .

[0026] The working principle and working process of this utility model:

[0027] When installing the fixture, first extend the pull rod 25 through the center hole of the spindle and the worktable 1 to the top of the worktable 1, then install the sealing ring 24 at the center hole of the worktable 1 to prevent the grinding fluid from entering the spindle when the grinder is working; then install the cover plate 26 on the worktable 1 through the seventh screw 27.

[0028] Then, the guide sleeve 10 is fixed on the workbench 1 by the fifth screw 21 and the T-nut 22. The inner hole of the guide sleeve 10 matches the outer circle of the connecting rod 14. Under the action of the pull rod 25, the outer circle of the connecting rod 14 can move flexibly up and down in the inner hole of the guide sleeve 10. Then, the eight support blocks 2 are evenly distributed on the workbench 1 by the sixth screw 23 and the T-nut 22, and then the support 3 is fixed on the eight evenly distributed support blocks 2 by the eighth screw 28. The elastic positioning sleeve 6 slotted along the axial direction and the gasket 7 in the slot are fixed by the first screw 4 and the positioning pin 5 and then installed on the support 3, so that the lower inner hole of the elastic positioning sleeve 6 matches the upper outer circle of the support 3. Finally, the four support plates 20 are evenly distributed on the outer convex plane of the elastic positioning sleeve 6 through the fourth screw 19, and the four pressure plates 18 are fixed on the support plates 20 respectively through the third screw 17. The sealing ring radial adjustment bolts 16-1 and the sealing ring press bolts 16-2 are respectively installed on the support plates 20 and the pressure plates 18. After the sealing ring 29 is installed in the elastic positioning sleeve 6, the upper pressure plate 9, the stop cover 11 and the nut 13 and other parts are installed in sequence. Among them, the pad 8 is installed between the two sealing rings 29; the outer circle of the upper pressure plate 9 matches the upper inner hole of the elastic positioning sleeve 6; the stop cover 11, the upper pressure plate 9 and the nut 13 are connected together with the connecting rod 14 by tightening the first screw 12.

[0029] Before clamping the sealing ring 29, the utility model first installs the in-groove gasket 7 in the groove of the elastic positioning sleeve 6 slotted along the axial direction by the first screw 4, and then drives the positioning pin 5 into the elastic positioning sleeve 6 and the in-groove gasket 7 to determine the position for the subsequent loading and unloading of the sealing ring 29; then the matching outer circle of the support 3 is matched with the matching inner hole below the assembled elastic positioning sleeve 6, that is, matching and grinding at A; then the matching outer circle of the upper pressure plate 9 is matched with the matching inner hole above the assembled elastic positioning sleeve 6, that is, matching and grinding at B.

[0030] When clamping the sealing ring 29, the utility model first places the first sealing ring 29 on the elastic positioning sleeve 6, then rotates the radial adjustment bolts 16-1 of the four radial sealing rings, so that the slotted sealing ring 29 in the free state slowly approaches the full circle state, and then rotates the four axial sealing ring pressing bolts 16-2, so that the sealing ring 29 is pressed down to the upper plane of the support 3, at this time, the first sealing ring 29 is assembled. Then, the pad 8 is installed in the elastic positioning sleeve 6, so that the inner hole of the pad 8 can move flexibly up and down along the outer circle of the guide sleeve 10. Next, the second sealing ring 29 is installed in the elastic positioning sleeve 6 according to the method of the first sealing ring 29. Finally, the upper pressure plate 9, the baffle cover 11 and the nut 13 and other parts are installed in sequence; at this time, the sealing ring 29 is assembled.

[0031] By the attached Figure 2 and attached Figure 3 It can be seen that when processing the sealing ring 29, first, under the drive of the clamp action cylinder, the cylinder drives the nut 13 to move downward through the pull rod 25 and the connecting rod 14, so that the cover 11 and the upper pressure plate 9 press the sealing ring 29; at this time, under the action of the cylinder, the friction force generated by the two end faces of the sealing ring 29 and the end faces of the contacting parts is greater than the tangential elastic force of the working gap of the sealing ring 29, and then the elastic positioning sleeve 6, the gasket 7 in the groove, the pressure plate 18 and the support plate 20 and other parts are removed, so as to achieve the effect of automatic centering and end face pressing. After the clamping is completed, the grinding wheel grinds the outer circle of the two sealing rings 29 under the drive of the outer cylindrical grinding head.

[0032] It is understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A clamping structure for a sealing ring outer circle grinding process, comprising a workbench (1), characterized in that: The workbench (1) is provided with a sealing ring positioning mechanism and a sealing ring pressing mechanism, wherein the sealing ring positioning mechanism is located at the outer periphery of the sealing ring pressing mechanism; the sealing ring positioning mechanism comprises a support block (2), wherein a plurality of support blocks (2) are distributed in a ring shape on the workbench (1); a support (3) is mounted on the support block (2); an elastic positioning sleeve (6) is placed on the support (3), a sealing ring (29) is placed in the elastic positioning sleeve (6), and the bottom of the sealing ring (29) abuts against the support (3); the sealing ring pressing mechanism comprises a pull rod (25), an upper pressure plate (9), a baffle cover (11 ), a guide sleeve (10) is installed on the workbench (1), a center hole is opened below the guide sleeve (10), the middle part of the pull rod (25) slides in the guide sleeve (10) and the center hole, the bottom of the pull rod (25) is connected to the oil cylinder, and the oil cylinder drives the pull rod (25) to move up and down; the top of the pull rod (25) is connected to the connecting rod (14) through the second set screw (15), the upper end of the connecting rod (14) extends out of the guide sleeve (10) and is threadedly connected to the nut (13); the upper pressure plate (9) and the blocking cover (11) are located between the nut (13) and the sealing ring (29).

2. The clamping structure for the sealing ring outer circle grinding process according to claim 1, characterized in that: The elastic positioning sleeve (6) is provided with an elastic through groove, in which a slot gasket (7) is installed. Matching screw holes and pin holes are provided on both sides of the elastic through groove of the elastic positioning sleeve (6) and on the slot gasket (7). The elastic positioning sleeve (6) and the slot gasket (7) are connected by a first screw (4) and a positioning pin (5).

3. The clamping structure for the sealing ring outer circle grinding process according to claim 1, characterized in that: The support (3) and the elastic positioning sleeve (6) are provided with matching positioning surfaces; the outer circle of the sealing ring (29) and the inner wall of the elastic positioning sleeve (6) are matching positioning surfaces.

4. The clamping structure for the sealing ring outer circle grinding process according to claim 1, characterized in that: A support plate (20) is provided on the outer periphery of the elastic positioning sleeve (6), a pressure plate (18) is installed on the top surface of the support plate (20), a sealing ring radial adjustment bolt (16-1) is horizontally threaded on the support plate (20), and a sealing ring press-in bolt (16-2) is threaded on the pressure plate (18).

5. The clamping structure for the sealing ring outer circle grinding process according to claim 1, characterized in that: The workbench (1) is provided with a T-shaped slot, in which a T-shaped nut (22) is slidably installed. A plurality of supporting blocks (2) are distributed in a ring shape, and the supporting blocks (2) are connected to the T-shaped nut (22) via a sixth screw (23).

Images