KR101763837B1 - Measuring apparatus for splitting paticle of connecting rod and manufacturing method of the same - Google Patents

Abstract

Disclosed are an apparatus to measure a fracture particle of a connecting rod, and a method thereof. The apparatus to measure the fracture particle of the connecting rod measures an amount of a fracture particle generated on a fracture surface of a fractured and divided rod connection unit to check a degree of separation of the fracture surface in order to determine a quality of a connecting rod and adequacy of a raw material used to manufacture the connecting rod, and determine whether or not there is a defect.

Description

TECHNICAL FIELD [0001] The present invention relates to a measuring device for measuring a broken particle of a connecting rod,

The present invention relates to a method of measuring the amount of broken particles collected by collecting broken ends formed on the fracture surfaces of the large end portion, the rod connecting portion composed of the rod and the small end portion and the small end portion divided by the rod connecting portion integrally connected thereto A main frame provided perpendicularly to the ground; A cylindrical rotating pin fixedly coupled to a fixture provided on an upper portion of an inner circumferential surface of the main frame and having a diameter smaller than that of the small end portion so as to be rotatable with the small end portion inserted therein, ; An upper frame formed to be bent vertically from an upper end of the main frame; A datum pin which is provided at an end of the upper frame and lifts up the rod connection part in a state where the small end part is fitted in the rotatable fin and comes into close contact with the outer circumferential surface to thereby start the free rotation of the rod connection part; A collision plate coupled to a lower portion of an inner circumferential surface of the main frame, the collision plate being coupled to the rod connection portion at a position corresponding to the load connection portion when the rod connection portion collides with the rod connection portion when the load connection portion falls freely; And a collecting box provided on an inner circumferential surface of the lower end of the main frame for collecting broken particles separated from the fracture surface of the rod connecting part, The present invention relates to a measuring apparatus and method for measuring a broken particle of a connecting rod, which is capable of judging the quality and deficiency of a connecting rod by checking the degree of dropout of a section, and judging suitability of a raw material used for manufacturing a connecting rod will be.

Generally, a connecting rod is connected to a piston in an automobile engine and reciprocates in a cylinder, and receives a gas pressure of a high temperature and a high pressure in an expansion stroke, and converts the reciprocating motion of the piston into a rotational motion of a crankshaft. Is a major driving component of

As shown in Fig. 1, the connecting rod 1 is largely composed of three parts. The connecting rod 1 has a large end portion 2 connected to the crankshaft, a small end portion 4 connected to the piston, And a rod (3).

The large end portion is divided into a rod connecting portion connected to the rod and a cap portion serving as a large end cap. The rod connecting portion and the cap portion are formed with coupling holes communicating with each other, and are fixed to the coupling holes with bolts and nuts.

A method of dividing a rod portion and a large end cap portion in such a connecting rod includes a fracture splitting method in which a notched portion is formed at a large end portion and then a wedge is inserted and divided and a joint portion between the rod portion and the cap portion is machined to be fastened with bolts and nuts And the like.

In the case of the seating surface machining method, since the contact surface must be milled, there is a disadvantage in that it requires not only a large number of processes but also a long time. In addition, since the adhesion of the contact surface is lowered, the rigidity of the connecting rod is lowered due to the lowering of the tightness between the rod and the cap, and the strength is lowered due to premature breakage of the bolt. It is a tendency to use a fracture splitting method which can reduce the load and increase durability.

The fracture splitting method is a method in which a notch is formed at a large end portion of a connecting rod, and then a wedge is used to divide the rod into small end loads and large end caps. The rod and cap thus divided are connected to each other by bolts and nuts do.

If the large end portion is broken by the rod connecting portion and the cap portion, there is a problem that a partial particle (PARTCLE) due to the tensile of the workpiece is generated and remains attached to the workpiece after the fracture. In the prior art, the particles remaining on the fracture surface are removed, and then the engine is put into the engine assembly process.

If the connecting rod is divided by the fracture splitting method, the shape of the fracture surface differs for each product, and accordingly, the amount of generated particles is different. However, if only the operation of removing the particles without measuring the amount of particles generated on the fractured surface after the fractured fracture or confirming the state of the fractured surface is performed, a connecting rod in which a large amount of particles are generated can be used. When the rod connecting portion and the cap portion are fastened, the surface contact ratio is lowered, and thus damage to the fracture surface is accelerated.

Therefore, after splitting the connecting rod, it is necessary to always measure the amount of the particles (particles) generated on the fractured surface or to check the condition of the fractured surface. Conventionally, only a device for removing particles has been disclosed, There is no disclosure of an apparatus or a method for measuring the amount of the liquid.

Korean Registered Patent No. 10-1293264 (Connecting rod section chip removing device) Korean Patent Registration No. 10-0634621 (particle removing device for connecting rod)

Disclosure of the Invention The present invention has been devised to solve the problems described above, and it is an object of the present invention to determine the quality of a connecting rod and whether or not it is defective by measuring the amount of broken particles generated on a fractured surface And to provide a measuring device and a method of measuring broken particles of a connecting rod which can judge the suitability of a raw material used for manufacturing a connecting rod.

In order to achieve the above object, according to the present invention, there is provided a method of manufacturing a semiconductor device, which comprises a large end portion, a connecting rod including a rod and a small end portion and dividing the small end portion and the rod connecting portion, 1. A measuring device for measuring an amount of particles, comprising: a main frame vertically installed on the ground; A cylindrical rotating pin fixedly coupled to a fixture provided on an upper portion of an inner circumferential surface of the main frame and having a diameter smaller than that of the small end portion so as to be rotatable with the small end portion inserted therein, ; An upper frame formed to be bent vertically from an upper end of the main frame; A datum pin which is provided at an end of the upper frame and lifts up the rod connection part in a state where the small end part is fitted in the rotatable fin and comes into close contact with the outer circumferential surface to thereby start the free rotation of the rod connection part; A collision plate coupled to a lower portion of an inner circumferential surface of the main frame, the collision plate being coupled to a position corresponding to the rod connection portion to collide with the rod connection portion so as to collapse the broken connection portion of the rod connection portion; A collecting box provided on the inner peripheral surface of the lower end of the main frame for collecting the broken particles dropped from the fracture surface of the rod connecting portion; And an electronic balance installed at a lower portion of the collecting chamber so as to be able to measure the amount of the broken particles collected in the collecting chamber. The amount of the broken particles collected in the collecting chamber, It is possible to judge the quality and defectiveness of the connecting rod, and to judge the suitability of the raw materials used in the manufacturing of the connecting rod.

In addition, in the present invention, the fixture is detachably attachable to the main frame so as to adjust a reference point when the free-fall falls according to the standard of the connecting rod.

According to the present invention, the datum pin is movably coupled up and down from the upper frame so as to adjust the starting point when the free-fall falls according to the standard of the connecting rod.

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According to the present invention as described above, the quality of the connecting rod can be judged by checking the degree of detachment of the fracture surface of the rod connecting portion through the amount of the broken particles collected in the collecting compartment, So that the engine damage of the vehicle can be remarkably reduced.

In addition, by measuring the amount of broken particles, it is possible to judge the suitability of the raw materials used in the manufacturing of the connecting rod. Therefore, it is possible to expect a quality improvement by selecting a more suitable raw material, and the cost and time It is possible to improve the economical efficiency, workability and productivity.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic view showing a method of dividing a connecting rod by fracture in general. Fig.
2 is an illustration of an apparatus for measuring broken particles of a connecting rod according to the present invention.
FIGS. 3 to 4 are diagrams for explaining a method of measuring broken particles of a fracture surface of a rod connecting portion through a broken particle measuring apparatus according to an embodiment of the present invention; FIG.
5 is a photograph taken to show broken particles formed on the fracture surface of the rod connecting portion formed by fracturing the connecting rod.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an apparatus for measuring broken particles of a connecting rod according to the present invention will be described in detail with reference to the accompanying drawings.

The present invention is characterized in that the connecting end of the connecting rod is divided into a small end portion formed by connecting the large end portion 2 and the connecting rod 1 composed of the rod 3 and the small end portion 4, The quality of the connecting rod can be judged and the suitability of the raw materials used for manufacturing the connecting rod can be judged by checking the amount of the broken particles collected by collecting the formed broken particles and confirming the dropout degree of the fracture surface of the rod connecting portion The present invention relates to a breaking particle measuring device and a measuring method for a connecting rod.

2, the present invention includes a main frame 100, a rotating pin 200, an upper frame 300, a datum pin 400, an impact plate 500, and a collecting box 600 .

The main frame 100 is formed of a plate material having a predetermined thickness, which is formed in a square or rectangular shape, and is perpendicular to the paper surface. The main frame 100 may be made of a variety of materials, and may be made of a metal or a plastic material having a high strength to secure weight and strength.

The rotatable pin 200 is fixedly coupled to a fixture 210 provided on an upper portion of the inner circumferential surface of the main frame 100. When the small end portion 4 is fitted, So as to become the reference point of the free-fall motion of the rod connecting portion.

The fixing part 210 includes a first fixing part 211 fixed to the inner circumferential surface of the main frame, a second fixing part 213 bent perpendicularly from one end of the first fixing part and fixed to the rotation pin, And has a cross-sectional shape of "┓" shape.

The fixing member 210 is preferably made of a material having strength such that when the rod connecting portion is fixed to the rotating pin by being fastened thereto, it is separated from the main frame or a short circuit is not generated between the first fixing portion and the second fixing portion.

According to the standard of the connecting rod 1, the fixture 210 can be detachably coupled to the main frame 100 so as to adjust a reference point at the time of free fall of rotation. For example, the first fixing part 211 and the main frame 100 are respectively formed with bolt holes through bolts and nuts, and the bolt holes of the main frame are formed in a plurality of upper and lower spaced apart intervals, It is possible to adjust the position up and down to change the reference point upon free fall of rotation.

The rotating pin 200 is formed in a cylindrical shape so that the small end portion 4 can be inserted therein, and the rod connecting portion 5 is formed to have a diameter smaller than that of the small end portion so that the rod connecting portion 5 is freely rotatable.

The rotating pin 200 may be formed in various diameters so as to correspond to the size of the connecting rod 1, And is fixed by being bolted to the portion 213. A bolt hole is formed in the second fixing part 213 for bolt connection with the rotating pin 200.

The upper frame 300 is a rectangular or rectangular plate formed to be bent vertically from the upper end of the main frame 100 and has a predetermined thickness for securing strength. Like the main frame, the upper frame 300 may be made of a metal or a plastic material having a high strength in order to achieve weight reduction and strength.

The datum pin 400 is removably provided at an end of the upper frame 300. The rod connecting part 5 is lifted up in a state where the small end part 4 is fitted in the rotating pin 200, Thereby making it a starting point for starting the free-fall of the load of the rod connecting portion 5.

The datum pin 400 includes a stopper 410 which is in close contact with the outer circumferential surface of the rod connecting part 5 to limit the movement of the rod connecting part and an elongated hole 310 extending vertically from the upper end of the stopper, And a coupling portion 420 having a predetermined length passing through the coupling portion 420.

A screw thread is formed on the outer circumferential surface of the coupling part 420 so that the datum pin can be fixed by inserting a nut into the upper and lower surfaces of the upper frame respectively. The nut is loosened to move the coupling part up and down, The start point can be adjusted when falling. In addition, according to the standard of the connecting rod 1, the start point can be adjusted by moving left and right in the long hole 310. The datum pin 400 may be, for example, a bolt.

The impingement plate 500 is a rectangular or rectangular plate member which is coupled to the lower portion of the inner circumferential surface of the main frame 100 so that the impingement plate 500 collides against the fracture surface of the rod connection portion .

The impact plate 500 may be formed to have a predetermined thickness so that impact applied when the rod connection portion 5 is collided against the main frame 100 due to the free fall of the rod connection portion 5 is not transmitted to the main frame 100, It is preferable to be formed of a material having high strength so as not to be damaged or short-circuited.

The collecting box 600 is provided on the inner circumferential surface of the lower end of the main frame 100 so as to collect the broken particles dropped from the fracture end of the rod connecting portion. The collection box 600 may have a box shape in which the four sides are closed and the top is opened so that the broken particles can be easily collected and the collected particles are not lost.

An electronic balance 700 may be provided in the lower part of the collecting box 600 to easily measure the amount of collected particles. Since the amount of the broken particles collected from the fracture surface of one rod connecting portion can be extremely small and its weight is also light in weight, it is preferable to use the electronic balance capable of ultra-minute precision measurement.

When the broken particles are trapped in the collecting box 600, the amount of the broken particles can be quantified to be used as a criterion for judging the quality or badness of the product (connecting rod). For example, some of the plurality of broken rod connecting portions 5 are selected, the broken particles are sequentially collected through the broken particle measuring device, the average value of the collected broken particles is calculated, It is possible to judge whether the quality of the image is poor or not. In addition, 20 connecting rods, which are alloyed with carbon steel, are contained in an amount of 0.4 to 0.6% of carbon, 0.1 to 0.3% of silicon, 0.7 to 0.9% of manganese, 0.06 or less of phosphorus and 0.07% The five rod connecting portions broken out among them are selected to measure the amount of broken particles and then an average value of the weight is calculated to determine whether all of the 20 connecting rods are made of suitable raw materials .

Hereinafter, a method of measuring the broken particles of the rod connection portion through the broken particle measuring apparatus according to an embodiment of the present invention will be described.

The fixing pin 210 is moved up or down to adjust the position of the connecting rod 1 so as to be positioned according to the size of the connecting rod 1 and then fixed to the main frame 100. Thereafter, 200 are selected and fixed to the fixture 210.

Next, the position of the datum pin 400 is adjusted according to the standard of the connecting rod 1, and then fixed to the upper frame 300.

Next, the rod connecting portion 5 is fixed by fitting the small end portion 4 to the rotating pin 200 and then the rod connecting portion 5 is lifted to closely contact the outer circumferential surface of the datum pin 400, .

When the rod connecting portion 5 is freely rotatably dropped by the rotating pin 200 and collides with the impact plate 500, the broken particles of the fracture surface are dropped and fall free and collected 600).

The quality of the connecting rod is judged by measuring the amount of the broken particles thus collected, and the suitability of the raw materials used for manufacturing the connecting rod is judged.

According to the present invention as described above, the quality of the connecting rod can be judged by confirming the degree of detachment of the fracture surface of the rod connecting part through the amount of the broken particles collected in the collecting compartment, It is possible to remarkably reduce the damage of the engine of the vehicle and judge the suitability of the raw materials used in the manufacturing of the connecting rod to expect a quality improvement by selecting a more suitable raw material and to reduce the cost and time consumed in the use of inappropriate raw materials It is possible to improve the economical efficiency, workability and productivity.

1: connecting rod 2:
3: Rod 4: Small end
5: Rod connection part 6: Cap part
100: Mainframe
200: Rotating pin 210: Fixture
211: first fixing portion 212: second fixing portion
30: upper frame 310: long hole
400: Datum pin 410: Stopper
420:
500: collision plate
600: Collecting box
700: Electronic scales

Claims (5)

And a measuring device for measuring the amount of the broken particles collected by collecting the broken particles formed on the fractured surface of the rod connecting portion in which the divided small end portions and the rod are integrally connected by breaking the connecting rod comprising the rod and the small end portion In this case,
A main frame 100 vertically installed on the ground;
A cylindrical rotatable member fixed to the fixture 210 provided on the inner circumferential surface of the main frame and having a diameter smaller than that of the small end so as to be rotatable with the small end inserted therein, Pin 200;
An upper frame 300 formed to be bent vertically from the upper end of the main frame;
A datum pin (400) provided at an end of the upper frame, the datum pin (400) serving as a starting point for starting the free rotation of the rod connection part by lifting the rod connection part in close contact with the outer circumferential surface in a state in which the small end part is fitted in the rotatable fin;
A collision plate 500 coupled to a lower portion of an inner circumferential surface of the main frame, the collision plate 500 being coupled to the rod connection portion at a position corresponding to the rod connection portion so as to collide with the rod connection portion, Wow;
A collecting box (600) provided on the inner peripheral surface of the lower end of the main frame for collecting broken particles separated from the fracture surface of the rod connecting part; And
And an electronic balance (700) installed at a lower portion of the collecting compartment so as to measure the amount of broken particles collected in the collecting compartment,
The quality of the connecting rod can be judged by checking the degree of detachment of the fracture surface of the rod connecting portion through the amount of the broken particles collected in the collecting box and the suitability of the raw materials used in the manufacturing of the connecting rod can be judged Wherein the broken rod is a broken rod.
The apparatus according to claim 1, wherein the fixture is detachably attachable to the main frame so as to adjust a reference point when the free-fall falls according to a standard of the connecting rod.
[2] The apparatus according to claim 1, wherein the datum pin is vertically movably coupled to the upper frame so as to adjust the starting point of free-fall falling according to the size of the connecting rod.
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