CN216883030U

CN216883030U - Elastic piston ring internal grinding clamp

Info

Publication number: CN216883030U
Application number: CN202122356004.1U
Authority: CN
Inventors: 许妍; 辛明明; 周吉; 陈红霞; 刘仁伟; 王立华; 王臣; 刘云朋
Original assignee: AECC Harbin Dongan Engine Co Ltd
Current assignee: AECC Harbin Dongan Engine Co Ltd
Priority date: 2021-09-27
Filing date: 2021-09-27
Publication date: 2022-07-05
Anticipated expiration: 2031-09-27

Abstract

The utility model relates to the technical field of machining, concretely relates to grinding anchor clamps in elasticity piston ring, including base, clamp plate, cylindric lock A, swivel nut, screw A, conical surface packing ring A, spherical surface packing ring A, positioning seat, circle clamp ring, hook-shaped clamp plate, spring A, thin nut, spring B, when compressing tightly the elasticity piston ring, the drunkenness can not take place for the elasticity piston ring under the effect of friction, can peep adjustment elasticity piston ring state, improves the interior grinding process qualification rate of elasticity piston ring.

Description

Elastic piston ring internal grinding clamp

Technical Field

The utility model relates to the technical field of machining, in particular to an elastic piston ring internal grinding clamp.

Background

The elastic piston ring is an annular part with an opening, the thickness of the elastic piston ring is 1-5mm, the opening is expanded in a free state, the elastic piston ring recovers a circular ring structure when being hooped by external force, and the inner diameter and the outer diameter have precision requirements. When the conventional elastic piston ring internal grinding clamp is used, a plurality of elastic piston rings are processed in groups, the positioning sleeve is applied to tightly hoop the elastic piston rings, the inner holes of the elastic piston rings are recovered to be circular, the screw caps are screwed on the positioning sleeve, the elastic piston rings are compressed, and then the internal grinding processing can be carried out. In the process, on one hand, the nut is in threaded fit with the positioning sleeve, and when the elastic expansion ring is compressed, the elastic expansion ring moves under the action of friction force. On the other hand, the operator cannot know and adjust the state of the elastic piston ring because the peephole cannot be designed due to the fact that the thread needs to be machined on the outer diameter of the positioning sleeve and the positioning sleeve is further covered with the nut. The two factors act simultaneously, so that the defective rate of the internal grinding processing of the elastic piston ring is high.

SUMMERY OF THE UTILITY MODEL

The purpose of the utility model is as follows:

an elastic piston ring internal grinding clamp which can not cause compression friction and can peep and adjust the state of an elastic piston ring.

The technical scheme of the utility model is as follows:

an elastic piston ring internal grinding clamp comprises a base, a pressing plate, a cylindrical pin A, a threaded sleeve, a screw A, a conical washer A, a spherical washer A, a positioning seat, a circular pressing ring, a hook-shaped pressing plate, a spring A, a thin nut and a spring B, wherein the base is of a disc-shaped structure with a threaded hole in the center, the positioning seat is of a cylindrical structure with a through hole, one end of the positioning seat is a flange plate, the positioning seat is connected with the base through the flange plate, three circular platforms which are uniformly distributed are arranged on the outer cylindrical surface of the positioning seat, the circular platforms are provided with through holes A parallel to the axis of the through hole, the through hole in the center of the positioning seat is divided into a shaft hole section C, a shaft hole section D, a shaft hole section E and a shaft hole section F according to the shaft diameter, the shaft diameter of the shaft hole section C is gradually increased from one end close to the flange plate along the axis of the through hole, a part is positioned through the shaft hole section E, the circular pressing ring is arranged on the shaft hole section F, the round pressing ring pressing part is connected with the threaded hole in the center of the base in a threaded mode, the pressing plate is of a Y-shaped structure with a central through hole B, three branch protrusions are evenly distributed, a through hole B is formed in each branch protrusion, the screw A penetrates through the through hole B in the center of the pressing plate and is connected with the threaded sleeve, the pressing plate is connected with the threaded sleeve, the hook-shaped pressing plate comprises a shaft section and a pressing plate portion, one end of the shaft section is connected with the pressing plate portion, the other end of the shaft section sequentially penetrates through holes A in the round platform, the spring A and the through hole B in the three branch protrusions of the pressing plate, the thin nut and the spring B are arranged outside the through hole A, the shaft section is arranged in the through hole A and can move and rotate along the axial direction, the pressing plate portion is driven to press the round pressing ring, and the round pressing part is pressed through the round pressing ring.

Further, the base is disc shape, divide into two upper and lower step shafts, and the step shaft diameter on upper portion is less, and the center has a screw hole, and there is a circular pin hole screw hole the screw hole next door, and the step shaft surface of lower part has the square groove of three equipartition, and the tank bottom all has the countersunk head through-hole, sets up the several through-hole between per two adjacent square grooves simultaneously.

Further, the threaded sleeve is a threaded bushing with a shaft shoulder, the external thread of the threaded sleeve is matched with a threaded hole in the center of the base, the internal thread of the threaded sleeve is a T-shaped thread, a square groove notch is formed in the shaft shoulder, the threaded sleeve is screwed into the base, and the square groove notch in the shaft shoulder of the threaded sleeve is located right above the round pin hole of the base; the cylindrical pin A is installed in a circular pin hole of the base, the upper end face of the cylindrical pin A is flush with the upper end face of the threaded sleeve, the threaded sleeve is limited, and the effect of preventing the threaded sleeve from rotating is achieved.

Further, the positioning seat further comprises a cylindrical pin B and the screw B, and the cylindrical pin B and the screw B connect the base and the positioning seat together.

Furthermore, the side surfaces of the three protruding branches of the pressing plate are provided with circular bosses, and the inner diameters of the circular bosses are larger than the diameters of the shaft shoulders of the thread sleeves, so that the interference is avoided.

The lower end of the screw A is provided with T-shaped threads, the upper end of the screw A is provided with a hexagon socket, and the screw A penetrates through the spherical washer A, the conical washer A and the central hole of the pressure plate and is screwed on the screw sleeve.

Furthermore, the circular pressing ring is of a circular ring structure with a chamfer, the outer diameter of the circular pressing ring is in clearance fit with the maximum inner hole of the positioning seat, and the inner diameter of the circular pressing ring is slightly smaller than the inner diameter of the part.

Furthermore, the two ends of the spring A are provided with gaskets B, one end of the spring B is provided with the gasket A, the other end of the spring B is provided with the gasket B, and a conical surface gasket B and a spherical surface gasket B are arranged between the through hole B on the three branches of the pressing plate and the thin nut.

The utility model has the beneficial effects that:

in summary, the utility model provides the internal grinding clamp for the elastic piston ring, when the elastic piston ring is compressed, the elastic piston ring cannot move under the action of friction force, the state of the elastic piston ring can be peeped and adjusted, and the internal grinding processing qualification rate of the elastic piston ring is improved.

Drawings

FIG. 1 is a side view of the present invention;

FIG. 2 is a cross-sectional view along AA of FIG. 1;

FIG. 3 is a schematic view of a base structure according to the present invention;

FIG. 4 is a side view of the positioning socket of the present invention;

FIG. 5 is a schematic view of the positioning seat of the present invention;

FIG. 6 is a sectional view of the positioning base structure of the present invention;

FIG. 7 is a schematic view of the platen structure of the present invention;

wherein: 1. the novel bearing comprises a base, 2 parts of a pressure plate, 3 parts of a cylindrical pin A, 4 parts of a threaded sleeve, 5 parts of a screw A, 6 parts of a conical washer A, 7 parts of a spherical washer A, 8 parts of a cylindrical pin B, 9 parts of a positioning seat, 10 parts of a washer A, 11 parts of a screw B, 12 parts of a circular pressing ring, 13 parts of a hook-shaped pressure plate, 14 parts of a washer B, 15 parts of a spring A, 16 parts of a conical washer B, 17 parts of a spherical washer B, 18 parts of a thin nut, 19 parts of a spring B, 20 parts of a flange plate and 21 parts of a circular truncated cone.

Detailed Description

The utility model is further described with reference to the accompanying drawings, and the main structure of the internal grinding clamp for the elastic piston ring comprises: the device comprises a base 1, a pressure plate 2, a cylindrical pin A3, a threaded sleeve 4, a screw A5, a conical washer A6, a spherical washer A7, a cylindrical pin B8, a positioning seat 9, a washer A10, a screw B11, a circular pressure ring 12, a hook-shaped pressure plate 13, a washer B14, a spring A15, a conical washer B16, a spherical washer B17, a thin nut 18 and a spring B19. Base 1 is the disc shape, divide into two ladders, and the last ladder shaft diameter of face is less, and there is a screw hole at the center, and the next door has a circular round pin hole, has the square groove of three equipartition below on the ladder face, and the tank bottom all has the countersunk head through-hole, countersunk head through-hole evenly distributed still distributes the several through-hole on the ladder face simultaneously, wherein has a cylinder hole, and other through-holes are the countersunk head from the bottom surface angle. The threaded sleeve 4 is a threaded bushing with a shaft shoulder, the parameters of the external thread are the same as those of the threaded hole of the base 1, the internal thread is a T-shaped thread, and the shaft shoulder is provided with a square groove notch. And screwing the threaded sleeve 4 into the base 1, wherein the square groove notch on the shaft shoulder of the threaded sleeve 4 is positioned right above the round pin hole of the base 1. The cylindrical pin A3 is installed in a circular pin hole of the base 1, and the upper end surface of the cylindrical pin A3 is flush with the upper end surface of the screw sleeve 4, so that the effect of preventing the screw sleeve 4 from rotating is achieved. The lower end of the positioning seat 9 is a flange plate 20, a plurality of threaded holes and a round hole are distributed on the flange plate, the upper end of the positioning seat is a cylinder, three round tables 21 are uniformly distributed on the cylinder, the axes of the round tables 21 are parallel to the axis of the cylinder, a through hole A is formed in the center of the round tables, the through hole is divided into two sections, and the diameter of the hole above the through hole is smaller. The lower end of the positioning seat 9 is provided with three square grooves which are uniformly distributed and have the same positions as the round tables. The center of the positioning seat 9 is provided with a through hole which is divided into four sections according to the shaft diameter, the shaft diameter is gradually increased from the bottom to the top, the diameter of the minimum hole is the same as the diameter of the smaller shaft of the base 1, the diameter of the smaller hole is slightly larger than the inner hole of the elastic piston ring, and the diameter of the larger hole is consistent with the outer diameter of the elastic piston ring and is a positioning hole of the clamp. The upper end of the positioning seat 9 is provided with a plurality of square grooves, and the bottoms of the square grooves are flush with the bottom surface of the larger hole. The cylindrical pin B8 and the screw B11 connect the base 1 and the positioning seat 9 together. The hook-shaped pressing plate 13 is divided into four sections, the front three sections are all cylinders, the diameters of the front three sections are increased from bottom to top, the second section is provided with threads, the last section is a square pressing plate section, and a blank cutter is designed between the last section and the third section according to requirements. The pressing plate 2 is Y-shaped, three branches are uniformly distributed, a through hole B is formed in the pressing plate, the three through holes B are also uniformly distributed, a circular boss is arranged on the back face of the pressing plate, and the inner diameter of the circular boss is larger than the diameter of the shaft shoulder of the threaded sleeve 4, so that the interference is avoided. The center of the pressure plate 2 is provided with a through hole. The hook-shaped pressing plate 13 passes through the through hole a, the washer B14, the spring a15, the washer B14, the hole B, the tapered washer B16, the spherical washer B17, the two thin nuts 18, the washer B14, the spring B19 and the washer a10 respectively. The hook-shaped pressing plate 13 can move and rotate along the axial direction in the through hole A. The screw A5 has T-shaped thread at the lower end and a hexagon socket at the upper end, and is screwed on the threaded sleeve 4 through the spherical washer A7, the conical washer A6 and the central hole of the pressure plate 2. The circular compression ring 12 is of a circular ring structure with a chamfer, the outer diameter of the circular compression ring can be in clearance fit with the largest inner hole of the positioning seat 9, and the inner diameter of the circular compression ring is slightly smaller than the inner diameter of the elastic expansion ring.

During the use, in installing a set of elasticity piston ring into anchor clamps locating hole, will circular compression ring 12 presses on the elasticity piston ring surface, will hook-shaped clamp plate 13 changes circular compression ring 12 top is screwed up screw A5, clamp plate 2 drives three hook-shaped clamp plate 13 compresses tightly simultaneously circular compression ring 12. And checking whether the elastic piston ring is compacted or not through a square groove at the upper end of the positioning seat 9 to finish clamping the elastic piston ring. Meanwhile, the square groove at the upper end of the positioning seat 9 can facilitate the installation and the disassembly of the elastic expansion ring and the circular compression ring 12. The thin nut 18 at the upper end can adjust the relative positions of the hook-shaped pressing plates 13 and the pressing plate 2, so that three hook-shaped pressing plates 13 can simultaneously press the circular pressing ring 12. The spring A15 can ensure that the pressure plate 2 does not deflect in the process of pressing, and the balance of the pressure plate 2 is kept, so that the three hook-shaped pressure plates 13 are ensured to act synchronously. The thin nut 18 at the lower end can adjust the amount of compression of the spring B19. The spring B19 can provide a supporting force when the pressing plate is released, so that the hook-shaped pressing plate 13 is automatically lifted, and the elastic piston ring is convenient to detach. The square groove at the lower end of the positioning seat 9 can facilitate the adjustment of the two thin nuts 18.

The present invention has been described in detail with reference to the accompanying drawings, and it is to be understood that the utility model is not limited to the specific embodiments described above, and that various insubstantial modifications of the inventive concepts and solutions, or their direct application to other applications without modification, are intended to be covered by the scope of the utility model.

Claims

1. The utility model provides an elasticity piston ring internal grinding anchor clamps which characterized in that: the positioning device comprises a base (1), a pressing plate (2), a cylindrical pin A (3), a threaded sleeve (4), a screw A (5), a conical washer A (6), a spherical washer A (7), a positioning seat (9), a circular pressing ring (12), a hook-shaped pressing plate (13), a spring A (15), a thin nut (18) and a spring B (19), wherein the base (1) is of a disc-shaped structure with a threaded hole in the center, the positioning seat (9) is of a cylindrical structure with a through hole, one end of the positioning seat is provided with a flange plate (20), the positioning seat (9) is connected with the base (1) through the flange plate (20), three circular truncated cones (21) are uniformly distributed on the outer cylindrical surface of the positioning seat (9), the circular truncated cones (21) are provided with through holes A parallel to the axis of the through hole, and the through hole in the center of the positioning seat (9) is divided into an axial hole section C, an axial hole section D and an axial hole section E according to the axial diameter, Shaft hole section F follows the through-hole axis from being close to ring flange (20) one end, and shaft hole section C increases progressively to shaft hole section F axle diameter, and the part passes through shaft hole section E location, shaft hole section F on set up circular clamping ring (12), circular clamping ring (12) compress tightly the part, swivel nut (4) threaded connection in the screw hole at base (1) center, clamp plate (2) for the Y style of calligraphy structure of central band through-hole B, three branch processes evenly distributed, also have a through-hole B above every branch process, screw A (5) pass through-hole B and swivel nut (4) at clamp plate (2) center and be connected, realize that clamp plate (2) are connected with swivel nut (4), hook-shaped clamp plate (13) including shaft section portion and pressure plate portion, shaft section portion one end is connected with pressure plate portion, the other end passes through-hole A, spring A (15), through-hole B on the three branch processes of clamp plate (2) in proper order, Thin nut (18), spring B (19), the pressure plate portion sets up outside through-hole A, axle section portion is in axial displacement, rotation can be followed in the through-hole A, drive the pressure plate portion and compress tightly ring (12), compress tightly the part through ring (12).

2. The internal grinding clamp for the elastic piston ring as claimed in claim 1, wherein: base (1) is disc shape, divide into two upper and lower ladder shafts, and the ladder shaft diameter on upper portion is less, and the center has a screw hole, and there is a circular round pin hole screw hole next door, and the ladder shaft of lower part has the square groove of three equipartition on the surface, and the tank bottom all has the countersunk head through-hole, sets up the several through-hole between per two adjacent square grooves simultaneously.

3. The internal grinding clamp for the elastic piston ring as claimed in claim 1, wherein: the screw sleeve (4) is a threaded bushing with a shaft shoulder, the external thread of the screw sleeve (4) is matched with a threaded hole in the center of the base (1), the internal thread of the screw sleeve (4) is a T-shaped thread, a square groove notch is formed in the shaft shoulder, the screw sleeve (4) is screwed into the base (1), and the square groove notch in the shaft shoulder of the screw sleeve (4) is located right above the round pin hole of the base (1); the cylindrical pin A (3) is arranged in a circular pin hole of the base (1), the upper end face of the cylindrical pin A is flush with the upper end face of the threaded sleeve (4), the threaded sleeve (4) is limited, and the effect of preventing the threaded sleeve (4) from rotating is achieved.

4. The internal grinding clamp for the elastic piston ring as claimed in claim 1, wherein: the positioning seat further comprises a cylindrical pin B (8) and a screw B (11), wherein the cylindrical pin B (8) and the screw B (11) are used for connecting the base (1) and the positioning seat (9) together.

5. The internal grinding clamp for the elastic piston ring as claimed in claim 1, wherein: the side surfaces of the three protruding branches of the pressing plate (2) are provided with circular bosses, and the inner diameters of the circular bosses are larger than the diameters of shaft shoulders of the thread sleeves (4), so that the interference is avoided.

6. The internal grinding clamp for the elastic piston ring as claimed in claim 1, wherein: the lower end of the screw A (5) is provided with a T-shaped thread, the upper end of the screw A (5) is provided with a hexagon socket, and the screw A (5) penetrates through the spherical washer A (7), the conical washer A (6) and the central hole of the pressure plate (2) and is screwed on the threaded sleeve (4).

7. The internal grinding clamp for the elastic piston ring as claimed in claim 1, wherein: the circular pressing ring (12)1 is of a circular ring structure with a chamfer, the outer diameter of the circular pressing ring is in clearance fit with the maximum inner hole of the positioning seat (9), and the inner diameter of the circular pressing ring is slightly smaller than the inner diameter of a part.

8. The internal grinding clamp for the elastic piston ring as claimed in claim 1, wherein: the clamp is characterized in that gaskets B (14) are arranged at two ends of the spring A (15), one end of the spring B (19) is provided with the gasket A (10), the other end of the spring B (19) is provided with the gasket B (14), and a conical gasket B (16) and a spherical gasket B (17) are arranged between a through hole B on three branches of the pressure plate (2) and the thin nut (18).