KR20010027773A - Apparatus for removing burr on oil hole of a crank shaft of an engine - Google Patents

Abstract

PURPOSE: A device for removing burr in an oil hole is provided to automatically remove the burr in the oil hole of a crank shaft. CONSTITUTION: A burr remover consists of a base(10) on a crank shaft; a clamping unit for fixing the crank shaft; one pair of brush units(40) for removing the burr of first and second oil holes; an inversion chuck(30) for inverting the crank shaft to put the second oil hole on the brush unit in parallel after removing the burr in the first oil hole; and one pair of transfer units for transferring the brush units to a position for removing the burr in the first and second oil holes. The brush unit(40) is moved forward along a first guide rail(52) by the action of a first cylinder(51). A brush(42) is inserted in the first oil hole(6a) so that the burr in the first oil hole is removed. After the brush unit is perfectly moved forward, the first cylinder is actuated reversely. The brush unit moves backward along the first guide rail and the brush comes out of the first oil hole. The brush unit stops and the burr removing work finishes. Then the burr removing work for the second oil hole is performed.

Description

Apparatus for removing burr on oil hole of a crank shaft of an engine}

The present invention relates to a burr removal device capable of automatically removing a burr remaining in an oil hole of a crankshaft of a vehicle engine without manual labor of an operator in a crankshaft manufacturing line.

A typical automobile engine includes a cylinder having an intake / exhaust port opened and closed by an intake / exhaust valve, a piston reciprocating in the cylinder, and a crank shaft connected to the piston by a connecting rod. When reciprocating in this cylinder, a driving force is generated by the rotation of the crankshaft connected to the piston by the connecting rod. In particular, in the case of a multi-cylinder engine, one crankshaft penetrates a plurality of cylinders and is connected to the piston of each cylinder by a plurality of connecting rods so that the driving force generated from each cylinder is concentrated on one crankshaft.

This crankshaft, as shown in Figure 1, is supported by the main bearing to act as the main shaft and a plurality of pins (2), pins (2) and the journal (1) to which the connecting rod is coupled. Arm (3) for connecting, and a balance weight (4) for balancing the weight balance during rotation of the crankshaft, the shaft (5) attached to the output flange and the drive pulley for driving the bogie or camshaft at both ends This is provided. In a typical four cycle engine, an integrated crankshaft composed of a single member is widely used. The crankshaft is usually manufactured by forging or casting. In the case of the integrated crankshaft, the material is mainly manufactured by forging with high material reliability and high reliability, and the material is mainly carbon steel. In addition, a plurality of oil holes 6a and 6b for lubrication are formed from one side of the journal 1 toward the pins 2.

In the manufacturing process of the crankshaft as described above, in the process of processing the oil ball for lubrication oil remaining in the oil ball, fine particles called burrs (barr), conventionally, the operator cranks with an air drill equipped with a brush A work was performed to remove burrs remaining in the oil hole of the shaft. As such, in the related art, by removing the burr by manual labor of the worker, there is a disadvantage in that productivity is lowered due to a decrease in work efficiency due to simple and repeated labor.

The present invention has been made in view of the above, and an object thereof is to provide an apparatus capable of automatically performing a burr removal operation in an oil hole of a crankshaft.

1 is a front view of a typical engine crankshaft in which oil balls are formed.

Figure 2 is a plan view of a burr removal apparatus according to an embodiment of the present invention.

FIG. 3 is a front view of the burr removing device shown in FIG. 2. FIG.

4 is a side view of the burr removing device shown in FIG.

FIG. 5 is a plan view illustrating a state in which burrs are removed while the crankshaft is inverted, showing an operating state of the burr removing device shown in FIG. 2;

Explanation of symbols on the main parts of the drawings

6a, 6b; Oil ball 9; Crankshaft

10; Base 22; Center clamp

24; Rear clamp 26; Radial clamp

30; Inverting chuck 40; Brush unit

42; Brush 50; Conveying part

51; First cylinder 52; 1st guide rail

53; Second cylinder 54; Second guide rail

55; Moving

The above object is a pair of second oil holes formed in a direction orthogonal to a pair of first oil balls and a first oil ball formed in a direction inclined at a predetermined angle with respect to the axial direction from one outer peripheral surface side of the journal to an inner one side of the pin. An apparatus for removing burrs remaining in oil balls of a crank shaft having oil balls, comprising: a base on which the crank shaft is placed; A clamping portion for fixing a crank shaft placed on the base; A pair of brush units installed on both sides of the crank shaft in a direction parallel to the first oil hole and for removing burrs of the first and second oil holes; An inverting chuck for inverting the crank axis so that the second oil hole is placed in a direction parallel to the brush unit so that the burr removing operation for the first oil hole is completed when the burr removing operation for the first oil hole of the brush unit is completed; And a pair of transfer parts for respectively transferring a pair of brush units to a position capable of performing a burr removal operation for the first and second oil holes, in the oil crank shaft removal device of the engine crankshaft according to the present invention. Is achieved.

The clamping portion includes a center clamp for supporting the crank axis in the axial direction; A rear clamp supporting the crank shaft in a vertical direction; And a radial clamp for supporting the crankshaft in a horizontal direction perpendicular to the axial direction.

Each conveying unit includes: a first cylinder for advancing and brushing the brush unit in a direction parallel to the first oil hole; A first guide rail for guiding movement of the brush unit by the first cylinder; A moving plate on which the brush unit, the first cylinder, and the first guide rail are mounted; A second cylinder for moving the moving plate in a direction parallel to the crank axis; And a second guide rail for guiding the movement of the moving plate by the second cylinder.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.

Burr removal apparatus according to an embodiment of the present invention is shown in FIGS. 2 and 5 are a plan view of a burr removing apparatus according to an embodiment of the present invention, Figure 3 is a front view, and Figure 4 is a side view.

As shown, the burr removal device according to one embodiment of the present invention includes a base 10, a clamping part, an inverting chuck 30, a pair of brush units 40, and a pair of transfer parts 50. Doing.

An inverting chuck 30 and a clamping portion are provided on an upper surface of the base 10, and the crank shaft 9 is supported on the base 10 by the inverting chuck 30 and the clamping portion.

The inversion chuck 30 chucks one end of the crank shaft 9, and inverts the crank shaft 9 to 180 ° according to the working process.

The clamping portion has a center clamp 22, a rear clamp 24, and a radial clamp 26. The center clamp 22 is provided on the opposite side of the reversal chuck 30 to support the crank shaft 9 in the axial direction together with the reversal chuck 30. The rear clamp 24 and the radial clamp 26 are provided in order so as to be adjacent to the inverting chuck 30, and support the crank shaft 9 in the horizontal direction perpendicular to the vertical direction and the axial direction, respectively.

On the base 10 on both sides of the crankshaft 9, a pair of transfer parts including first and second cylinders 51 and 53, first and second guide rails 52 and 54, and a moving plate 55 50 is provided, and the brush unit 40 is provided in each conveyance part 50 so that a movement is possible.

The second guide rails 54 are provided on both sides of the crankshaft 9 in parallel to the axial direction of the crankshaft 9, and on which the moving plate 55 is mounted. This moving plate 55 is connected to the rod of the second cylinder 53 provided on the other side on the base 10. Thus, the moving plate 55 can be moved parallel to the axial direction of the crankshaft 9 along the second guide rail 54 by the second cylinder 53. In the figure, reference numerals 56a and 56b are stoppers for limiting the moving range of the moving plate 55, respectively.

The first guide rail 52 and the first cylinder 51 are mounted on the moving plate 55. The first guide rail 52 is mounted in a direction parallel to the direction of the first oil hole 6a of the crankshaft 9, where the brush unit 40 moves forward and backward along the first guide rail 52. Gene is installed. Movement of the brush unit 40 is made by the first cylinder 51. A brush 42 for removing burrs remaining in the oil holes 6a and 6b of the crankshaft 9 is attached to the front side of the brush unit 40.

The burr removing apparatus according to one embodiment of the present invention having such a configuration is installed on one side of the manufacturing line for manufacturing the crank shaft 9, and the burr removing operation in the crank shaft oil holes 6a and 6b is as follows. It is done as follows.

First, the crankshaft 9 in which the oil holes 6a and 6b are formed is transferred to the burr removing device according to one embodiment of the present invention by a separate transfer means (not shown) such as a loader from all the processes of the manufacturing line. It is conveyed and mounted on the upper surface of the base 10.

The crankshaft 9 mounted on the upper surface of the base 10 has a base 10 by means of an inverting chuck 30, a clamping portion, that is, a center clamp 22, a rear clamp 24, and a radial clamp 26. It is clamped so as not to move on the upper surface of the. At this time, the pair of first oil holes 6a are placed parallel to the brush unit 40. Of course, the pair of second oil holes 6b are thus placed at right angles to the brush unit 40.

As such, when the crank shaft 9 is fixed to the upper surface of the base 10 by the clamps 22, 24, and 26, the second cylinder 53 is operated and thus the moving flat plate on which the brush unit 40 is mounted. 55 is moved along the second guide rail 54 so that the brush unit 40 is coaxial with the first oil hole 6a.

Then, the first cylinder 51 and the brush unit 40 are operated at the same time. By the operation of the first cylinder 51, the brush unit 40 is advanced along the first guide rail 52, and the brush 42 installed in front of the brush unit 40 is formed of the crank shaft 9. The burr inside the first oil hole 6a is removed while being inserted into the first oil hole 6a.

After the brush unit 40 is fully advanced, the first cylinder 51 is operated in the reverse direction so that the brush unit 40 is retracted along the first guide rail 52 and the brush 42 is the first oil hole. It exits from (6a). When the brush unit 40 is completely retracted, the brush unit 40 stops operating. Through this process, the burr removal work in the first oil hole 6a is completed.

Next, the radial clamp 26 of the clamping portion releases the clamping on the crank shaft 9 and the inverting chuck 30 is operated to reverse the crank shaft 9. Accordingly, the crank shaft 9 is inverted by 180 ° on the base 10 so that the second oil hole 6b is placed parallel to the brush unit 40. At this time, the radial clamp 26 is kept in a released state, and the position of the crank shaft 9 is determined by the inverting chuck 30 and the remaining clamps 22 and 24.

Then, the moving plate 55 is moved along the second guide rail 54 by the operation of the second cylinder 53, as shown in Figure 5, the brush unit 40 is the second oil hole ( On the same axis as 6b).

Then, the burr removing operation for the second oil hole 6b is performed in the same process as the burr removal for the first oil hole 6a described above by the operation of the first cylinder 51 and the brush unit 40. do.

After the deburring operation for the second oil hole 6b is completed, the crankshaft 9 is reversed by the reversing chuck 30 and placed in an initial state, and the clamping part and the reversing chuck 30 are crank shafts. Release the clamping for (9). The conveying means (not shown) then conveys the crankshaft 9 to the next process of the production line.

The present invention as described above is installed in the production line of the crankshaft to automatically perform the burr removal operation for the oil hole of the crankshaft. Therefore, the manual work of the worker for removing the burr is not required as in the related art, and the work is performed at a high speed by the dedicated device, and thus, workability and productivity are greatly improved.

In the above, this invention was shown and demonstrated only about specific preferable implementation. However, the present invention is not limited only to the above-described embodiments, and those skilled in the art to which the present invention pertains can vary as many without departing from the spirit of the technical idea of the present invention described in the claims below. Modifications may be made.

Claims (3)

Crank having a pair of first oil holes formed in a direction inclined at a predetermined angle with respect to the axial direction from one outer peripheral surface side of the journal to the inner one side of the pin and a pair of second oil holes formed in a direction orthogonal to the first oil hole. An apparatus for removing burrs remaining in the oil balls of the shaft, A base on which the crankshaft is placed; Clamping means for securing a crankshaft placed on the base; A pair of brush units installed on both sides of the crank shaft in a direction parallel to the first oil hole and for removing burrs of the first and second oil holes; When the burr removing operation for the first oil hole of the brush unit is completed, the crank shaft is inverted so that the second oil hole is placed in a direction parallel to the brush unit so that the burr removing operation for the second oil hole is performed. Inverting chuck to make; And A device for removing oil ball burrs on an engine crankshaft, comprising a pair of means for respectively transporting the pair of brush units to a position where burrs can be removed for the first and second oil holes. . The method of claim 1 wherein the clamping means A center clamp for supporting the crank axis in an axial direction; A rear clamp supporting the crank shaft in a vertical direction; And And a radial clamp for supporting the crank shaft in a horizontal direction perpendicular to the axial direction. The method of claim 1 wherein each conveying means A first cylinder for advancing and moving the brush unit in a direction parallel to the first oil hole; A first guide rail for guiding movement of the brush unit by the first cylinder; A moving plate on which the brush unit, the first cylinder, and the first guide rail are mounted; A second cylinder for moving the moving plate in a direction parallel to the crank axis; And a second guide rail for guiding the movement of the moving plate by the second cylinder.