KR101363063B1 - The lapping instrument for an engine piston oil-ring - Google Patents

Abstract

The present invention relates to an oil ring lapping device for an engine piston of a vehicle and more specifically, to an oil ring lapping device for an engine piston of a vehicle which vertically reciprocates the inside of a cylindrical sleeve. The purpose of the present invention is to improve workability and productivity by facilitating a step of disassembling an oil ring, which is used in the engine piston of the vehicle, from the lapping device and assembling the oil ring to the lapping device in a manufacturing process.

Description

The lapping instrument for an engine piston oil-ring}

The present invention relates to an oil ring wrapping device for an automobile engine piston, and more specifically, to an oil ring used for an automotive engine piston, an oil ring for maintaining closeness between the inner diameter of the cylinder liner and the outer diameter of the oil ring in a manufacturing process and maintaining airtightness. The present invention relates to an oil ring wrapping device for automobile engine pistons developed to increase workability and productivity by facilitating a process of detaching and attaching an oil ring to a wrapping device when precisely trimming an outer diameter thereof.

The piston that reciprocates the cylinder chamber in the engine of the car is normally equipped with two or three piston rings to maintain the airtightness between the cylinder liner and to maintain the airtightness. One or two oil rings are installed to evenly apply oil and scrape excess oil.

A series of rings mounted on these pistons are subjected to lapping to precisely adhere to the cylinder liner.

At this time, the processing that is performed when it is necessary to process dimensional accuracy, parallelism, roughness, etc. more precisely, the lapping processing is called lapping processing.

If the oil ring is not precisely processed, the wear of the cylinder liner may be accelerated or scratched, and when the oil leaks, there is a problem that seriously affects the normal operation of the engine.

However, in this lapping process, each oil ring is inserted into the outer circumferential surface of a separate ring, and then moved up and down in the cylindrical sleeve to perform the lapping operation and separate one by one, which takes a lot of time because of very troublesome work. There was this.

The reason for fitting each of these separate rings is that the tension of the oil ring is weak, so that the lapping process cannot be performed properly.

In this regard, it was necessary to develop a wrapping apparatus that can perform lapping processing more easily and effectively.

(Patent Document 1) Republic of Korea Patent Publication No. 10-2011-0023882 (March 08, 2011) (Patent Document 2) Republic of Korea Patent Publication No. 10-2013-0026147 (March 13, 2013) (Patent Document 3) Korean Patent Registration No. 10-0018261-0000 (December 27, 1984) (Patent Document 4) Korean Patent Registration No. 10-0208492-0000 (April 16, 1999)

The present invention was developed to solve the above problems, an object of the present invention is to develop a vehicle oil ring wrapping device that can be easily mounted and separated after processing a number of oil rings when lapping the oil ring. .

In order to achieve the above object, the present invention is a screw thread is formed on the upper outer circumferential surface is mounted on the main shaft which is vertically raised and lowered, the vertically penetrating through hole, and extends vertically long on the outer circumferential surface to penetrate through the through hole A main body having shoe insertion holes formed radially at regular intervals along the six sides;

A first taper surface inserted into the through-hole of the main body, the first taper surface gradually decreasing after the outer diameter gradually increases adjacent to the upper end of the shoe insertion hole, and the narrowly narrowing after the outer diameter gradually increases adjacent to the lower end of the shoe insertion hole. An adjustment shaft having two tapered surfaces, the lower outer diameter of which threads are formed;

Six shoes inserted into the shoe insertion hole and having first and second inclined surfaces respectively at portions in close contact with the first and second tapered surfaces;

Six divided pieces mounted on the opposite side inserted into the shoe insertion hole of the shoe to form a cylindrical shape with those mounted on an adjacent shoe;

An expansion rubber in which a mounting hole penetrated vertically is formed in the center thereof, and a cylinder made of the divided piece is inserted, and contraction grooves extending in a vertical direction are radially formed at regular intervals on an outer surface thereof;

Vertically reciprocating the inside of the cylindrical sleeve, consisting of an adjusting nut supporting the lower end of the split piece and the expansion rubber and coupled with a thread formed on the outer diameter of the lower end of the adjusting shaft so that the adjusting shaft is elevated relative to the main body. And configured to exercise.

In addition, a pair of rubber upper guides on the upper portion of the main body is projected downward along the rim to surround the upper outer surface of the expansion rubber and to be divided into two vertically;

Four lower fixing body is divided into four vertically and the upper surface is in close contact with the lower end of the expansion rubber and is recessed along the outer diameter to form a spring insertion groove for inserting the fixed spring is pressed into the interior is characterized in that the additional mounting .

In addition, the lower end of the lower fixing body is extended in the normal direction and the lower end of the four guide long holes extending in a stepwise radially formed at regular intervals, is inserted from the lower end coupled to the bottom of the lower fixing body and extended stepwise The part is further characterized in that it further comprises a lower fixed stopper coupled by a fixed bolt is inserted into the head.

As described above, the present invention allows the operator to easily install a plurality of oil rings and to separate them after processing, thereby enabling the operator to work more easily and greatly reducing the time required for processing.

1 is a cross-sectional view according to an embodiment of the present invention;
2 is an exploded perspective view according to an embodiment of the present invention.
3 is a conceptual diagram showing the movement by the movement of the adjustment shaft according to an embodiment of the present invention
4 to 5 is a conceptual diagram showing a machining process according to an embodiment of the present invention

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a cross-sectional view according to an embodiment of the present invention, Figure 2 is an exploded perspective view according to an embodiment of the present invention, Figure 3 is a conceptual diagram showing the movement by the movement of the adjustment shaft according to an embodiment of the present invention. 4 to 5 are conceptual views illustrating a machining process according to an embodiment of the present invention, in which a thread is formed on an upper circumferential surface thereof and is mounted on a main shaft 11 that vertically moves up and down, and vertically penetrates a through hole 12. A main body (1) having a shoe insertion hole (13) extending longitudinally on the outer circumferential surface and penetrating through the through hole (12) and having six predetermined intervals radially along the outer circumferential surface;

A first tapered surface 21 inserted into the through-hole 12 of the main body 1, the outer diameter of which is gradually increased adjacent to the upper end of the shoe insertion hole 13, and then contracted stepwise, and the shoe insertion hole ( And a second taper surface 22 which is narrowly reduced after the outer diameter gradually increases adjacent to the lower end of 13), and the adjusting shaft 2 having a thread formed at the lower outer diameter;

Six shoes 3 inserted into the shoe insertion hole 13 and provided with first and second inclined surfaces 31 and 32 at portions in close contact with the first and second tapered surfaces 21 and 22, respectively. ;

Six divided pieces (4) mounted on the opposite side inserted into the shoe insertion hole (13) of the shoe (3) to form a cylindrical shape with those mounted on the adjacent shoe (3);

In the center, a vertically penetrating mounting hole 51 is formed, and a cylinder made of the divided piece 4 is inserted, and an outer side of the expansion rubber having radially elongated shrinkage grooves 52 formed at regular intervals. )Wow;

The adjustment shaft (2) relative to the main body (1) in combination with the thread formed on the lower outer diameter of the adjustment shaft (2) supporting the lower end of the divided piece (4) and the expansion rubber (5). An automobile oil ring wrapping device is characterized in that it is configured to vertically reciprocate the inside of the cylindrical sleeve 7 by adjusting nut 6 to lower.

Conventionally, the oil ring 10 is mounted as a means for wrapping the oil ring 10, and the oil ring 1 is mounted on the shaft and the vertical reciprocating motion is performed inside the sleeve to perform the lapping process. 10) Mounting the oil ring one by one in the separate ring for mounting and the oil ring (10) after the operation is not easy to perform the process is difficult and took a lot of time.

At this time, the shrinkage groove 52 of the expansion rubber 5 is formed to facilitate expansion or expansion of the expansion rubber (5).

In addition, in the present invention, a pair of rubber upper guides 8 are formed on the upper portion of the main body 1 and the bottom surface protrudes downward along the rim to surround the upper outer surface of the expansion rubber 5 and to be vertically divided into two;

Four lower heights are vertically divided into four and the upper surface is in close contact with the lower end of the expansion rubber (5) and recessed along the outer diameter to form a spring insertion groove (92) for inserting a fixed spring 91 is pressed inwards. An embodiment in which the stagnation 9 is further mounted is presented.

In the above embodiment, the rubber upper guide 8 prevents the upper end of the expansion rubber 5 from touching the inner wall surface of the sleeve 7, and the lower fixing body 9 includes the shoe including the expansion rubber 5. And the dividing piece 4 are prevented from being struck in the vertical direction due to its own weight or external force during work.

In addition, it is preferable that the outer diameter is formed to correspond to the inner diameter of the sleeve 7 so as to guide the movement inside the sleeve 7 to prevent the force from being biased to one side during operation.

In addition, in the present invention, the lower end of the lower fixing body (9) is provided with four guide long holes (93) extending radially long by the number of the lower fixing body (9) and the lower end stepwise, and is inserted from the lower end. An embodiment characterized in that the bottom fixing stopper (9a) is further coupled to the bottom surface of the lower fixing body (9) and coupled stepwise expansion portion is fixed by the fixing bolt 94 is inserted into the head Presented.

The embodiment prevents the twisting force on the expansion rubber 5 according to the rotation of the adjusting nut 6, and controls the movement so that the lower fixing body 9 moves only in the normal direction and the central axis direction. It is applied for the purpose.

That is, when adjusting the outer diameter of the expansion rubber (5) by the adjusting nut (6) the fixing bolt 94 is configured to move only along the guide long hole (93) to form a stable and accurate circle shape of the lower fixing body (9) Is moving.

1: Body
11: spindle 12: through hole
13: Insertion hole
2: adjusting shaft
21: first tapered surface 22: second tapered surface
3: shoe
31: first inclined surface 32: second inclined surface
4: Split piece
5: Expanded rubber
51: mounting hole 52: shrinkage groove
6: adjusting nut
7: sleeve
8: Rubber upper guide
9: lower fixture
91: fixed spring 92: spring insertion groove
9a: lower fixed stopper
93: guide long hole 94: fixing bolt

Claims (3)

A thread is formed on the upper outer circumferential surface and is mounted on the main shaft 11 which is vertically raised and lowered. The through-hole 12 penetrates vertically and extends vertically long on the outer circumferential surface to penetrate the through-hole 12 and the outer circumferential surface. A main body (1) having a shoe insertion hole (13) formed radially at regular intervals along the six;
A first tapered surface 21 inserted into the through-hole 12 of the main body 1, the outer diameter of which is gradually increased adjacent to the upper end of the shoe insertion hole 13, and then contracted stepwise, and the shoe insertion hole ( And a second taper surface 22 which is narrowly reduced after the outer diameter gradually increases adjacent to the lower end of 13), and the adjusting shaft 2 having a thread formed at the lower outer diameter;
Six shoes 3 inserted into the shoe insertion hole 13 and provided with first and second inclined surfaces 31 and 32 at portions in close contact with the first and second tapered surfaces 21 and 22, respectively. ;
Six divided pieces (4) mounted on the opposite side inserted into the shoe insertion hole (13) of the shoe (3) to form a cylindrical shape with those mounted on the adjacent shoe (3);
In the center, a vertically penetrating mounting hole 51 is formed, and a cylinder made of the divided piece 4 is inserted, and an outer side of the expansion rubber having radially elongated shrinkage grooves 52 formed at regular intervals. )Wow;
An adjustment for supporting the lower end of the split piece (4) and the expansion rubber (5) and the lower end of the adjusting shaft (2) to raise and lower the adjusting shaft (2) relative to the main body (1) Automotive oil ring wrapping device, characterized in that the nut (6) is configured to vertically reciprocate the inside of the cylindrical sleeve (7).
According to claim 1, wherein the upper surface of the main body (1) has a pair of rubber upper guides (8) and the bottom surface protrudes downward along the rim to surround the outer surface of the upper end of the expansion rubber (5) and vertically divided into two ;
Four lower heights are vertically divided into four and the upper surface is in close contact with the lower end of the expansion rubber (5) and recessed along the outer diameter to form a spring insertion groove (92) for inserting a fixed spring 91 is pressed inwards. Automotive oil ring wrapping device characterized in that the stag (9) is further mounted.
According to claim 2, wherein the lower end of the lower fixing body (9) is elongated in the normal direction and four guide long holes (93) are formed radially at regular intervals, the lower end is inserted into the lower height Automobile oil ring wrapping apparatus characterized in that it further comprises a lower fixed stopper (9a) coupled to the bottom surface of the stagnation (9) coupled to the stepped expansion by a fixing bolt 94 is inserted into the head.

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