CN213826713U - Frock of riveting pressure oil ring - Google Patents

Abstract

The utility model provides a frock of riveting pressure oil ring, it includes frock support post, elastic component, moves the riveting. When no riveting acting force exists, the elastic piece is pre-compressed between the inner side of the flange of the tool bearing column and the movable riveting piece; riveting acting force along the axial direction of the tool bearing post realizes axial riveting of the buckling part of the oil ring; continue to promote the elastic component along the axial shrink, move the post chamber that the riveting piece slided towards frock holding post, extrusion inclined plane promotes oil ring cutting edge of a knife or a sword limit lock inwards this moment. The utility model discloses with the riveting of oil ring buckling parts, the riveting on oil ring cutting edge of a knife or a sword limit, merge a process, reduced the tool cost, efficiency improves 40%, the qualification rate of the product of improvement.

Description

Frock of riveting pressure oil ring

Technical Field

The utility model relates to a crank oil ring processing technology field especially relates to a frock of riveting pressure oil ring.

Background

The annular sheet metal part is riveted behind the crank, and the outer edge of the sheet metal part is generally required to be subjected to second punching riveting to prevent the sheet metal part from losing efficacy and loosening after vibration impact; positioning errors of multiple times of processing cause unstable quality of products, and quality cost is improved.

SUMMERY OF THE UTILITY MODEL

The utility model provides a frock of riveting oil ring, with the riveting of oil ring buckling parts, the riveting on oil ring cutting edge of a knife or a sword limit, merge a process, reduced tool cost and technology man-hour cost, the qualification rate of the product of improvement.

According to an embodiment of the utility model, a tool for riveting an oil ring comprises a tool bearing column, a movable riveting piece and an elastic piece; the tool supporting column comprises a cylindrical thin-wall part with a flange and an internal column cavity, wherein a plurality of edge pressing parts protruding outwards in the axial direction are arranged on the edge of the cylindrical thin-wall part, which is open at one end far away from the flange, and an extrusion inclined plane is arranged on the inner side of each edge pressing part in the axial direction; the movable riveting piece is arranged in a column cavity of the tool bearing column, an annular pressing part is arranged at one end of the movable riveting piece, and the pressing part protrudes out of the pressing edge part along the axial direction of the tool bearing column; the elastic piece is arranged in a column cavity of the tool bearing column and is pre-compressed between the column cavity and the dynamic riveting piece along the axial direction of the tool bearing column; the tool receiving column can overcome the pre-compression force of the elastic piece under the action of the axial force, and the tool receiving column can axially displace relative to the movable riveting piece.

The technical principle of the utility model is that: when the riveting acting force is not available, the elastic piece is pre-compressed between the inner side of the flange of the tool bearing column and the movable riveting piece; along the axial riveting effort of frock support post, promote the elastic component and continue to shrink along the axial, move the nip portion of riveting and slide towards the nip portion of frock support post.

Compared with the prior art, the utility model discloses following beneficial effect has:

1) the elastic piece is arranged in a column cavity of the tool bearing column, axial precompression is generated, the pressure of the tool bearing column is sequentially transmitted to the oil ring buckling part and the oil ring cutting edge, two times of riveting processes are combined to one time, and the process working time cost is reduced.

2) The frock that the optimization scheme included adopts circular or columniform elastic component, moves rivet and anticollision piece setting in the post chamber of the frock bearing post of ring shape, and the equipment requirement of preparation frock is low, and the overall size of frock is compact, cooperation intensity is high, so the stable, the cost of maintenance of quality of frock is low.

3) The frock that optimization scheme included adopts the anticollision piece cover to locate the crank output shaft that size required precision is high, motion required precision is high, has avoided crank output shaft to strike the inside of frock bearing post in the riveting process, reduces crank oil groove and scrapps or the maintenance.

Drawings

Fig. 1 is a schematic view of a process of riveting an oil ring buckling part according to an embodiment of the present invention.

Fig. 2 is a partially enlarged view a of fig. 1.

Fig. 3 is a schematic view of a process of riveting the sharp edge of the oil ring according to an embodiment of the present invention.

Fig. 4 is a partial enlarged view B of fig. 3.

Fig. 5 is a schematic structural view of a tooling receiving column according to an embodiment of the present invention.

Fig. 6 is a schematic structural view of the elastic member according to the embodiment of the present invention.

Fig. 7 is a schematic structural view of the anti-collision member according to the embodiment of the present invention.

Fig. 8 is a schematic structural view of a dynamic rivet according to an embodiment of the present invention.

Fig. 9 is a schematic structural diagram of an oil ring according to an embodiment of the present invention.

Fig. 10 is a schematic structural diagram of a crank oil groove according to an embodiment of the present invention.

Fig. 11 is a schematic structural view of a fastener according to an embodiment of the present invention.

Fig. 12 is a schematic structural view of another tooling according to an embodiment of the present invention.

In the above drawings:

the tool comprises a tool receiving column 1, an extrusion inclined plane 11, a blank holder 12, a receiving column mounting hole 17 and a clamping plate 19;

a fastener 2, an inner nut column 217, a fastening screw 257 and an anti-collision cover 260;

the elastic piece 3, the elastic piece inner hole 30 and the elastic piece mounting hole 37;

the anti-collision piece 4 and an anti-collision piece inner hole 40;

the movable rivet 5, the pressing part 52, the movable rivet pushing hole 55, the movable rivet mounting hole 57 and the T-shaped clamping end 59;

the oil ring 6, an oil ring inner hole 60, an oil ring sharp edge 61 and an oil ring buckling part 62;

the crank oil groove 7, the crank output shaft 70, the oil groove inner rib 71, the oil groove riveting groove 72, the oil groove outer edge 73 and the oil groove avoiding groove 74.

Detailed Description

The technical solution of the present invention will be further explained with reference to the accompanying drawings and embodiments.

As shown in fig. 1-12, an embodiment of the present invention provides a tool for riveting an oil ring, which includes a tool support post 1, a movable rivet 5, and an elastic member 3; the tool receiving column 1 comprises a cylindrical thin-wall part with a flange and an internal column cavity, wherein a plurality of edge pressing parts 12 protruding outwards in the axial direction are arranged on the edge of the cylindrical thin-wall part, which is open at one end far away from the flange, and an extrusion inclined plane 11 is arranged on the inner side of the edge pressing parts 12 in the axial direction; the movable riveting piece 5 is arranged in a column cavity of the tool bearing column 1, an annular pressing part 52 is arranged at one end of the movable riveting piece, and the pressing part 52 protrudes out of the pressing part 12 along the axial direction of the tool bearing column 1; the elastic part 3 is arranged in a column cavity of the tool bearing column 1 and is pre-compressed between the column cavity and the dynamic riveting part 5 along the axial direction of the tool bearing column 1; wherein, the frock holds post 1 can overcome the precompression power of elastic component 3 under the axial force effect, and frock holds post 1 takes place axial displacement for moving rivet 5 moreover.

The column cavity of the tool bearing column 1 is optimized to be cylindrical; the bead part 12 may be provided as one piece around the cylindrical thin-walled member; the pressing edge parts 12 can also be optimally arranged on the columnar thin-walled part in an evenly distributed mode.

As shown in fig. 9-10: the oil ring 6 comprises an oil ring inner hole 60, an oil ring sharp edge 61 and an oil ring buckling part 62 which are coaxially arranged; an oil ring inner hole 60 is arranged in the middle, and an oil ring sharp edge 61 is arranged outside; the oil ring buckling part 62 with the U-shaped section is arranged between the oil ring inner hole 60 and the oil ring sharp edge 61;

the crank oil groove 7 comprises a crank output shaft 70 protruding from the middle part thereof, an oil groove outer edge 73 positioned at the outer part, and an oil groove riveting groove 72 for accommodating the oil ring buckling part 62; an oil groove outer edge 73 and an oil groove riveting groove 72 which are arranged outside, and further comprises an oil groove inner rib 71 which is raised along the axial direction of the oil ring 6, and an oil groove avoiding groove 74 which is coaxial with the oil ring buckling part 62; the oil groove inner rib 71 is arranged between the pressing part 52 of the movable rivet 5 and the extrusion inclined plane 11;

the oil ring 6 is usually formed by stamping from sheet metal, and the oil ring edge 61 increases the risk of scratching surrounding products or operators in the conventional secondary riveting process. The crank oil sump 7 is typically selected from a metal forging, followed by machining grooves or the like to fit the rivet to the oil ring 6.

The detailed working process of the embodiment is as follows:

step one, riveting the oil ring engaging portion 62: as shown in fig. 1-2, the oil ring 6 and the tool receiving post 1 are coaxially arranged; the oil ring engaging portion 62 is disposed above the oil groove riveting groove 72; the pressing part 52 of the movable rivet 5 pushes the columnar surface of the oil ring buckling part 62 to be attached to the columnar oil groove riveting groove 72; the oil ring edge 61 is approximately flush with the oil groove inner rib 71 along the axial length; the crank output shaft 70 is inserted into the bumper inner bore 40 and the elastic member inner bore 30.

And step two, riveting the oil ring edge 61: as shown in fig. 3-4, the tool receiving column 1 continues to increase the axial pressure, the elastic member 3 continues to compress along the axial direction, the movable rivet member 5 moves towards the flange of the tool receiving column 1 along the axial direction, and the extrusion inclined surface 11 extrudes the oil groove inner rib 71 to deform inwards; the inward deformation of the oil groove inner rib 71 pushes the oil ring edge 61 to deform inward; that is, the oil groove inner rib 71 engages the oil ring edge 61 in the axial direction.

Step three, loosening the tool bearing column 1, wherein the tool bearing column comprises a movable rivet part 5 and an elastic part 3; and after riveting, an oil ring 6 and a crank oil groove 7 which are integrated are formed and removed from the tool.

The utility model provides a technical scheme merges a process with the riveting of oil ring buckling parts 62, the riveting of oil ring cutting edge 61, has reduced technology man-hour cost, tool cost, has improved the one time qualification rate of product.

Further, a plurality of bearing column mounting holes 17 are axially formed in a flange of the tool bearing column 1; the elastic piece 3 is provided with an elastic piece mounting hole 37, and the elastic piece mounting hole 37 corresponds to the bearing column mounting hole 17; the movable rivet 5 is provided with a movable rivet mounting hole 57 on the circular plate at the other end opposite to the pressing part 52, and the movable rivet mounting hole 57 corresponds to the receiving column mounting hole 17; the tool further comprises a fastening piece 2 with a large screwing end, a rod part and a fixed end, one end of the fastening piece 2 is fixedly connected to the movable rivet mounting hole 57, the large screwing end of the fastening piece 2 is arranged on the outer side of the column cavity of the tool bearing column 1, and the rod part of the fastening piece 2 movably penetrates through the bearing column mounting hole 17 and the elastic piece mounting hole 37; wherein, the elastic piece 3 is pre-compressed between the inner side of the column cavity of the tool receiving column 1 and the circular plate of the dynamic rivet 5 through the fastener 2. The working principle is as follows: the elastic member 3 is usually made of hard rubber or plastic in a column shape, or a metal plate spring in a ring structure, or a metal corrugated spring, and the overall shape of the elastic member is optimized to be circular or cylindrical, so as to balance the axial force and the deformation in the diameter direction, and reduce the processing difficulty of the part. The fastener 2 is preferably a screw, the tail part of the screw is fixedly connected to the movable rivet mounting hole 57 through threads, and the rod part of the screw movably penetrates through the bearing post mounting hole 17 and the elastic part mounting hole 37. The elastic part mounting hole 37 can be optimally provided with a small end close to the bearing column mounting hole 17, the other end of the elastic part mounting hole is provided with a counter bore with a larger size, the corresponding fastener 2 optimally selects a bolt and a nut, the rod part of the bolt movably penetrates through the bearing column mounting hole 17 and the small end of the elastic part mounting hole 37, and the nut is arranged in the counter bore of the elastic part mounting hole 37 and then fixedly connected to the threaded end of the bolt; at this time, the circular plate of the dynamic rivet 5 and the elastic member 3 can be fixedly connected by current impact welding.

Further, as shown in fig. 11, the fastener 2 includes an inner nut post 217 having a tightening large end and a shank portion on the outer side, a fastening screw 257, a bump guard 260 having an opening in the middle; the large screwing end of the inner nut column 217 is arranged on the outer side of the flange of the tool bearing column 1, and the rod part of the inner nut column 217 movably penetrates through the bearing column mounting hole 17 and the elastic part mounting hole 37; the anti-collision cover 260 is arranged at one end of the movable rivet mounting hole 57 far away from the elastic piece 3; the fastening screw 257 is inserted into the middle hole of the bumper cover 260 and then fixedly connected to the rivet mounting hole 57 and the inner nut post 217 in turn. The working principle is as follows: common materials for crash cover 260 may be selected from brass or red copper, or equivalent rubber or plastic. The fastener 2 is formed by axially assembling three parts; the anti-collision cover 260 is arranged in the annular cavity of the pressing part 52 of the movable rivet 5 and protrudes out of the outer end of the fastening screw 257, and the anti-collision cover 260 abuts against the surface of the sheet metal part between the oil ring buckling part 62 and the oil ring inner hole 60, so that the oil ring 6 is prevented from being deformed and the riveting effect is reduced when the oil ring buckling part 62 and the oil ring sharp edge 61 are riveted.

Further, as another schematic structural diagram of the tooling shown in fig. 12, half-moon-shaped clamping plates 19 which are symmetrical and extend inwards are arranged on the inner wall of the column cavity of the tooling receiving column 1, and an axial inlet is formed between the two clamping plates 19; the other end of the movable rivet piece 5 opposite to the pressing part 52 is provided with a T-shaped clamping end 59, and the T-shaped clamping end 59 is matched with the axial inlet of the tool bearing column 1; the T-shaped card end 59 is rotatably engaged with the card plate 19 after passing through the axial inlet. The working principle is as follows: in an optimized solution, no fasteners 2 are required. The T-shaped clamping end 59 penetrates through the axial inlet to be rotatably clamped on the half-moon-shaped clamping plate 19, and the elastic element 3 is pre-compressed between the inner side of the flange and the clamping plate 19 along the axial direction of the tool receiving column 1. The elastic part is pre-compressed in the axial direction, and the axial pre-compression strengthening plane rubs on the inner side of a flange of the tool joint post 1, the two axial ends of the elastic part 3 and the T-shaped clamping end 59 of the movable riveting part 5; the T-shaped clamping end 59 of the flat friction anti-lock rivet 5 slides out of the axial inlet.

Further, a plurality of bearing column mounting holes 17 are axially formed in a flange of the tool bearing column 1; the frock still includes fastener 2, and fastener 2 has self-tapping screw's structural shape, and self-tapping screw's the big end setting of screwing up is in the flange outside of frock support post 1, and the pole portion activity of self-tapping screw is worn to locate the support post mounting hole 17, and self-tapping screw's most advanced fixed connection is to elastic component 3, dynamic riveting piece 5 again to let elastic component 3 precompression between the flange inboard of frock support post 1 and dynamic riveting piece 5. The working principle is as follows: the optimized structure of the tool connecting column 1 is a columnar thin-walled part without a step in the middle, namely a flange with only one end part, so that the processing requirement and the assembling requirement of the tool are reduced. The rod part provided with the tapping screw movably penetrates through the bearing column mounting hole 17 and is fixedly connected to the elastic part 3 and the dynamic riveting part 5; namely, the elastic piece 3 and the movable rivet piece 5 do not need to be provided with mounting holes in advance. The tip of the tapping screw may be fixed to the T-clip end 59; the tip of the tapping screw is also fixed to the circular plate in the middle of the rivet 5, i.e. avoiding the T-shaped clip end 59.

Further, as shown in fig. 7, the movable rivet 5 is axially provided with movable rivet pushing holes 55 with two ends having different sizes, and the large end faces one side of the elastic member 3; the tool further comprises an anti-collision piece 4 which is located in the movable rivet pushing hole 55 and matched with the movable rivet pushing hole, the anti-collision piece 4 is arranged between the elastic piece 3 and the movable rivet 5, and an anti-collision piece inner hole 40 and an elastic piece inner hole 30 which are used for penetrating through a protruding portion of a to-be-riveted oil ring are formed in the middle of the anti-collision piece 4 and the middle of the elastic piece 3 respectively. The working principle is as follows: the material of the bumper 4 is made of a material with hardness smaller than that of steel, such as brass, or equivalent rubber or plastic; the crank output shaft 70 penetrates through the inner hole 40 of the anti-collision piece to limit the deflection of the crank output shaft 70 in the diameter direction and avoid being collided to the inner side of the tool receiving column 1; the small end of the anti-collision piece 4 is optimally abutted against the convex part of the inner hole 60 of the oil ring, so that the oil ring 6 is prevented from deforming to reduce the riveting effect when the sharp edge 61 and the buckling part 62 of the oil ring are riveted.

Further, as shown in fig. 8, the dynamic rivet push-loose hole 55 has a shape of a stepped hole or a tapered hole. The working principle is as follows: the step hole or the conical hole is shaped, so that the machining cost in drilling or turning is relatively low; the two structural shapes meet the requirement that the anti-collision piece 4 is assembled in the movable rivet pushing-loosening hole 55 and the anti-collision piece inner hole 40 is sleeved on the crank output shaft 70 without impact, the anti-collision piece 4 has lower hardness than a product to be riveted, and the large end of the anti-collision piece 4 is propped against by the elastic piece 3 in the axial direction.

Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.

Claims (7)

1. A tool for riveting an oil ring is characterized by comprising a tool bearing column (1), a movable rivet (5) and an elastic piece (3);

the tool bearing column (1) comprises a cylindrical thin-wall part with a flange and an internal column cavity, wherein a plurality of edge pressing parts (12) protruding outwards along the axial direction are arranged on the edge of the cylindrical thin-wall part, which is open at one end far away from the flange, and an extrusion inclined plane (11) is arranged on the inner side of the edge pressing parts (12) close to the axial direction;

the movable riveting piece (5) is arranged in a column cavity of the tool bearing column (1), an annular pressing part (52) is arranged at one end of the movable riveting piece, and the pressing part (52) protrudes out of the pressing edge part (12) along the axial direction of the tool bearing column (1);

the elastic piece (3) is arranged in a column cavity of the tool bearing column (1) and is pre-compressed between the column cavity and the dynamic riveting piece (5) along the axial direction of the tool bearing column (1);

the tool bearing column (1) can overcome the pre-compression force of the elastic piece (3) under the action of the axial force, and the tool bearing column (1) is axially displaced relative to the dynamic riveting piece (5).

2. The tooling for riveting the oil ring according to claim 1, wherein a flange of the tooling receiving column (1) is provided with a plurality of receiving column mounting holes (17) along the axial direction;

the elastic piece (3) is provided with an elastic piece mounting hole (37), and the elastic piece mounting hole (37) corresponds to the bearing column mounting hole (17);

the movable rivet (5) is provided with a movable rivet mounting hole (57) on a circular plate at the other end opposite to the pressing part (52), and the movable rivet mounting hole (57) corresponds to the bearing column mounting hole (17);

the tool further comprises a fastening piece (2) with a large screwing end, a rod part and a fixed end, one end of the fastening piece (2) is fixedly connected to the movable rivet mounting hole (57), the large screwing end of the fastening piece (2) is arranged on the outer side of the column cavity of the tool bearing column (1), and the rod part of the fastening piece (2) movably penetrates through the bearing column mounting hole (17) and the elastic piece mounting hole (37);

the elastic piece (3) is pre-compressed between the inner side of a column cavity of the tool bearing column (1) and a circular plate of the dynamic riveting piece (5) through the fastener (2).

3. The tooling for riveting the oil ring according to claim 2, wherein the fastener (2) comprises an inner nut column (217) with a large screwing end and a rod part positioned at the outer side, a fastening screw (257) and an anti-collision cover (260) with a hole in the middle;

the large screwing end of the inner nut column (217) is arranged on the outer side of a flange of the tool bearing column (1), and the rod part of the inner nut column (217) movably penetrates through the bearing column mounting hole (17) and the elastic part mounting hole (37);

the anti-collision cover (260) is arranged at one end, far away from the elastic piece (3), of the movable rivet piece mounting hole (57);

and the fastening screw (257) penetrates through a middle hole of the anti-collision cover (260) and is then sequentially and fixedly connected to the movable rivet mounting hole (57) and the inner nut column (217).

4. The tooling for riveting the oil ring according to claim 1, wherein the inner wall of the cylinder cavity of the tooling receiving cylinder (1) is provided with symmetrical and inwards extending half-moon-shaped clamping plates (19), and an axial inlet is formed between the two clamping plates (19);

the other end of the movable riveting piece (5) opposite to the pressing part (52) is provided with a T-shaped clamping end (59), and the T-shaped clamping end (59) is matched with an axial inlet of the tool bearing column (1); the T-shaped clamping end (59) penetrates through the axial inlet and then is rotatably clamped on the clamping plate (19).

5. A tool for riveting an oil ring according to claim 4, wherein a flange of the tool receiving column (1) is provided with a plurality of receiving column mounting holes (17) along the axial direction;

the frock still includes fastener (2), fastener (2) have self-tapping screw's structural shape, self-tapping screw's the big end of screwing up sets up in the flange outside of frock support post (1), self-tapping screw's pole portion activity is worn to locate support post mounting hole (17), self-tapping screw's most advanced fixed connection again to elastic component (3), move rivet piece (5), in order to let elastic component (3) precompression at the flange inboard of frock support post (1) and move between rivet piece (5).

6. A tool for riveting an oil ring according to any one of claims 2-5, wherein the movable rivet (5) is provided with movable rivet pushing and loosening holes (55) with two ends of different sizes along the axial direction, and the large end of the movable rivet pushing and loosening hole faces one side of the elastic part (3);

the tool further comprises an anti-collision piece (4) which is located in the movable rivet pushing loose hole (55) and matched with the movable rivet pushing loose hole, the anti-collision piece (4) is arranged between the elastic piece (3) and the movable rivet (5), and an anti-collision piece inner hole (40) and an elastic piece inner hole (30) which are used for penetrating through a protruding portion of an oil ring to be riveted are respectively formed in the middle of the anti-collision piece (4) and the middle of the elastic piece (3).

7. A tool for riveting an oil ring according to claim 6, wherein the rivet pushing hole (55) has a stepped or tapered shape.

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