KR20110125335A - Deburring device for high precision product - Google Patents

Abstract

PURPOSE: A cylinder de-burring device of a high-precision part is provided to reduce machining defects due to eccentricity since while a jig unit horizontally moves, the eccentricity between the cylinder of a target and reamer is supplemented. CONSTITUTION: A cylinder de-burring device(100) of a high-precision part comprises a jig unit(110), a jig transfer unit(120), a reamer(130), a rotating motor unit(140), a centering device(150), a linear guide unit(160), and a vertically transferring motor unit(170). The jig unit fixes a target(10) with a cylinder(12). The jig transfer unit horizontally transfers the jig unit. The reamer is inserted into the cylinder of the target. The rotating motor unit rotates the reamer. The centering device is installed between the reamer and the rotating motor. The centering device corrects the eccentricity and deflective angle between the reamer and the cylinder.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a cylinder deburring device for a high-

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cylinder deburring device for precision parts, and more particularly, to a cylinder deburring device of high precision parts capable of precisely removing only a plating layer formed on the inner surface of a cylinder while maintaining the roundness and cylindricality of the cylinder.

For example, a distributing valve, which is an essential part of an automatic lubrication system for a vehicle or an industrial use, is provided with a cylinder in which a piston is assembled.

A dispense valve is a very precise part that distributes the grease supplied from the pump in a fixed amount and supplies the lubricant to the required place, and must be free of leaks at very high pressure (over 300 bar).

The cylinders in which the pistons of such dispense valves are assembled require high precision on the order of 3 to 4 micrometer assembly tolerance.

However, the dispensing valve is plated or electrodeposited to prevent corrosion of parts and improve durability.

When plating or electrodeposition coating is performed, a plating layer or a coating layer is formed on the inner surface of the cylinder, and since the plating layer or the coating layer damages the dimensional precision, the plating layer or the coating layer is removed through a separate process.

Conventionally, the coating layer or the coating layer is removed by a skilled worker. In such a case, it is difficult to maintain a constant quality and has a problem causing a cost increase.

SUMMARY OF THE INVENTION The present invention is to provide a cylinder deburring device of high precision parts capable of precisely machining the inside of a cylinder of a high precision part having a cylinder.

It is another object of the present invention to provide a cylinder deburring device of a high precision part which compensates for a declination angle and an eccentricity so as not to damage the cylinder.

It is still another object of the present invention to provide a cylinder deburring device of a highly precise part which can compensate eccentricity even in a jig by allowing a jig for fixing a cylinder to flow in a horizontal direction.

According to an aspect of the present invention, there is provided a cylinder deburring apparatus for a high precision part, including: a jig for fixing a workpiece provided with a cylinder; A jig transferring unit for transferring the jig in a horizontal direction; A reamer inserted into the cylinder of the workpiece; A rotating motor unit for rotating the reamer; A centering device provided between the reamer and the rotary motor to correct eccentricity and a deviation angle between the reamer and the cylinder; A linear guide portion for guiding up and down movement of the rotary motor portion; And an up-and-down conveying motor unit for raising and lowering the rotating motor unit.

Preferably, the reamer includes a cutting portion for cutting the inner surface of the cylinder, and a tapered guide portion formed on the upper and lower sides of the cutting portion.

It is more preferable that the taper angle of the guide portion is 5 ㅁ 1..

The centering device includes a pair of circular plates vertically arranged to face each other and a plurality of elastic members connecting the pair of circular plates,

The elastic body is preferably an ESP (Elastomer Shear Pad).

The jig transfer unit may include a transfer table connected to the jig and a horizontal transfer motor for transferring the transfer table in a horizontal direction,

In this case, the jig may flow in a horizontal direction with respect to the transfer table, and more preferably, the eccentricity generated when the reamer is inserted is compensated.

In addition, it is preferable that the jig includes a plurality of position fixing pins inserted into the bottom surface of the workpiece on the upper surface.

The cylinder deburring apparatus according to the present invention is provided with a centering device so that even if the reamer enters the cylinder with the cylinder having the angle of inclination or eccentricity, the cylinder deburring apparatus automatically corrects the reamer, thereby maintaining a constant machining quality .

Further, the cylinder deburring apparatus of a high precision part according to the present invention can compensate eccentricity generated between the reamer and the cylinder of the workpiece by moving the jig for fixing the workpiece in the horizontal direction, thereby reducing the occurrence of machining defects due to eccentricity And the machining quality can be kept constant.

In addition, the fixture fixes the workpiece with a plurality of position fixing pins, thereby facilitating the attachment and detachment of the workpiece, thereby improving the workability.

The cylinder deburring apparatus of a high precision part according to the present invention optimizes the shape of the reamer as a cutting tool, thereby reducing the processing load.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a configuration diagram showing a structure of a cylinder deburring apparatus of a high-precision part according to an embodiment of the present invention;
FIG. 2 is a diagram showing a state in which a reamer of a high-precision part cylinder deburring apparatus according to an embodiment of the present invention is lowered;
3 is an enlarged view of a reamer used in a cylinder deburring apparatus of a high precision part according to an embodiment of the present invention,
4 is a view for explaining eccentricity correction of a centering device of a deburring device according to the present invention,
FIG. 5 is a view for explaining declination correction of a centering device of a deburring apparatus according to the present invention. FIG.

Hereinafter, a preferred embodiment of a cylinder deburring apparatus of a high precision part according to the present invention will be described.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

1 and 2 are block diagrams showing a structure of a cylinder deburring apparatus of a high precision part according to an embodiment of the present invention.

As shown, the cylinder deburring apparatus 100 of a high precision part according to the present invention includes a jig 110 for fixing a workpiece 10 provided with a cylinder 12, A reamer 130 inserted into the cylinder 12 of the workpiece 10; a rotation motor 140 rotating the reamer 130; A centering device 150 provided between the reamer 130 and the rotary motor unit 140 for correcting an eccentric angle and a deflection angle between the reamer 130 and the cylinder 12, A linear guide unit 160 for guiding the up and down movement of the unit 140 and a vertical transfer motor unit 170 for moving the rotary motor unit 140 up and down.

The deburring apparatus 100 according to the present invention inserts the reamer 130 into the cylinder 12 of the workpiece 10 and cuts the plating layer or the coating layer attached to the inner wall of the cylinder 12, And the centering device 150 corrects the declination angle and eccentricity generated at the time of insertion.

Hereinafter, each component will be described in detail.

The jig 110 serves to fix the work 10. The jig 110 has a position fixing pin 112 inserted into the bottom surface of the work 12 to fix the work 120 to the jig 110. It is preferable that a plurality of position fixing pins 112 are provided to stably fix the work 120.

The position fixing pin 112 may be in the form of being inserted into the cylinder 12 or inserted into a hole other than the cylinder.

When the workpiece 10 is fixed using the position fixing pin 112, the workpiece 10 is fixed by placing the workpiece 10 in the position fixing pin 112. When the workpiece 10 is lifted up and removed The workability is good.

The jig part 110 is connected to the jig transfer part 120 and moves in the horizontal direction. A plurality of cylinders 12 are often provided in one workpiece 10 so that the jig transfer unit 120 moves the jig 110 horizontally So that the next cylinder 12 to be processed can be aligned with the reamer 130.

The jig transfer unit 120 includes a transfer table 122 for fixing the jig 110 and a horizontal transfer motor 124 for transferring the transfer table in a horizontal direction.

The cylinder 12 aligned with the reamer 130 can be changed by transferring the transfer table 122 by the operation of the horizontal feed motor 124. [

In the illustrated embodiment, the transport table 122 may be transported only in the uniaxial direction, or may include a plurality of transport motors so that the transport table 122 can be transported in the biaxial direction (x axis, y axis) .

When the jig transfer unit 120 is formed to be movable in the biaxial direction, the transfer table 112 can be easily moved to the reamer 130 even when the cylinder 12 is formed of a plurality of rows.

The jig portion 110 is preferably fixed to the transfer table 122 so as to be horizontally movable. The jig 110 is formed to be horizontally flowable so that when the eccentricity is generated between the reamer 130 and the cylinder 12 of the workpiece 10, the jig 110 flows, .

The deburring device 100 according to the present invention is provided with the centering device 150 capable of correcting eccentricity and declination angle. However, in order to further improve the eccentricity by allowing the jig 110 to flow, It is.

A plurality of balls 125 are interposed between the bottom surface of the jig 110 and the upper surface of the transfer table 122. The balls 125 are accommodated in the upper surface of the transfer table 122, And is constrained to be movable only within a certain range by the groove 126. The jig 110 can be moved in the horizontal direction with respect to the transfer table 122 because the jig 110 is raised above the ball 125 .

The reamer 130 is a tool inserted into the cylinder 12 of the workpiece 10 and cutting the plated layer or the coating layer attached to the inner surface of the cylinder 12. The concrete shape of the reamer 130 will be described later with reference to FIG. do.

The reamer 130 is connected to the rotating motor unit 150 via the centering device 140. That is, when the rotation motor unit 150 is operated, the centering device 140 and the reamer 130 rotate together.

The centering device 140 includes a pair of discs arranged vertically so as to face each other and a plurality of elastic bodies connecting the discs. When the reamer 130 is inserted into the cylinder 12, And it plays a role of correcting it.

The operation principle of the centering device 140 will be described later with reference to Figs. 4 and 5. Fig.

In order for the reamer 130 to process the inner surface of the cylinder 12 of the workpiece 10, the reamer 130 must be configured to be able to ascend and descend.

To this end, the deburring apparatus according to the present invention provides a structure in which the rotary motor unit 150, the centering device 140, and the reamer 130 can be integrally moved up and down.

The centering device 140 is configured to compensate eccentricity and declination angle with respect to the elastic center, and the elastic center should be located at the lower end of the remainder. Therefore, the distance from the centering device 140 to the lower end of the reamer 130 should be kept constant.

The centering device 140 and the reamer 130 are coupled with each other in order to move the reamer 130 up and down with the elastic center positioned at the lower end of the reamer 130. [ So that it can be ascended and descended.

2 shows a state in which the rotary motor unit 150 is lowered and includes a rotary motor unit 150 and a centering device 140, a reamer 130 are integrally moved up and down.

Up and down of the rotary motor unit 150 is performed by the operation of the vertical transfer motor unit 170 and further includes the linear guide unit 160 so that the rotary motor unit 150 can ascend and descend while maintaining the straightness .

Hereinafter, the operation of the deburring apparatus for high precision parts according to the present invention will be described. First, as shown in FIG. 1, the reamer 130 and the workpiece 10 are fixed to the jig 110 in a state in which the rotary motor unit 150 is elevated.

At this time, the workpiece 10 is fixed by the position fixing pins 112 formed on the surface of the jig 110, and a method of fitting the jig 110 to the position fixing pins 112 .

The position of the jig part 110 can be adjusted by operating the jig transferring part 120 after the workpiece 10 is fixed to the jig part 110. At this time, .

After aligning the reamer 130 and the cylinder 12, the upper and lower feed motor unit 170 is operated to lower the rotary motor unit 150. The remainder 130 is inserted into the cylinder 12 with the rotation motor part 150 being lowered since the rotation motor part 150 is connected to the centering device 140 and the reamer 130.

At this time, the rotating motor unit 150 is operated to rotate the reamer 130 and cut the inner surface of the cylinder 12.

A positional error (eccentricity) or an angular error (declination) may occur when the reamer 130 is inserted into the cylinder 12. Such position error and angular error are automatically compensated by the centering device 140, There is no fear that the degree of roundness or roundness of the inner surface of the cylinder 12 is lowered.

The reamer 130 is lowered to the inside of the cylinder 12 and then the upper and lower feed motor unit 170 is operated to raise the rotary motor unit 150 so that the reamer 130 is moved to the cylinder of the workpiece 10 12).

When there is a plurality of cylinders 12 to be machined in one workpiece 10, the jig transferring unit 120 is operated again so that the next cylinder 12 to be machined is aligned with the reamer 130, The inner surface of the cylinder 12 is machined.

3 is an enlarged view of a reamer used in a cylinder deburring apparatus of a high precision part according to an embodiment of the present invention.

As shown in the figure, the reamer 120 includes a cutting portion 132 for cutting the inner surface of the cylinder of the workpiece substantially at the bottom and a cutting portion 132 formed at the top and bottom of the cutting portion 132 and having a diameter And guide portions 134a and 134b having a tapered shape to be narrowed.

Although the illustration is exaggerated in the drawing, it is preferable that the taper angle of the guide portions 134a and 134b is 5 占 1. Here, 1 ㅀ is the error range.

The guide portion 134b under the cutting portion 132 allows the reamer 130 to smoothly enter the cylinder 12 and the upper guide portion 134a allows the reamer 130 to move from the cylinder 12 So that it can be separated smoothly.

If the angle is larger than the above range, a declination angle is likely to occur. If the angle is smaller than the above range, the reamer enters and exits smoothly and the machining load increases.

The length of each of the guide portions 134a and 134b is preferably about twice the length of the cutting portion 132. [

4 is a view for explaining eccentricity correction of a centering device of a deburring apparatus according to the present invention.

The centering device 140 includes a pair of circular plates 142a and 142b vertically arranged to face each other and a plurality of elastic members 144 connecting the pair of circular plates 142a and 142b (Shown in the form of a disc).

The elastic body is preferably an ESP (Elastomer Shear Pad). ESP has the property that elasticity acts on the other side when physical force is applied to either side of the object. The centering device 140 performs a function of automatically correcting the angular error and the positional error using these characteristics.

Fig. 4 is for explaining the principle of correcting the eccentricity (positional error).

When the reamer 130 is lowered in a state where the center of the cylinder 12 of the workpiece 10 and the center of the reamer 130 do not coincide with each other,

The lower end of the reamer 130 is brought into contact with the inlet of the cylinder 12, as shown in the center of the drawing. At this time, the reaction force Fx in the horizontal direction is generated, and the reaction force Fx in the horizontal direction passes the remote elastic center.

The remote elastic center means a point through which the contact reaction force Fx passes and is such that the axis does not tilt but moves in parallel with the reaction force so that the central axes coincide with each other.

Since the remote elastic center is located at the center of the lower end of the reamer 130, as shown in the right side of the figure, the elastic body 144 is moved in parallel in the horizontal direction so that the center axis of the reamer 130 and the cylinder 12 coincide .

5 is a view for explaining correction of a deviation angle (angle error) of a centering device of a deburring apparatus according to the present invention.

When the reamer 130 is lowered in a state where the central axis of the reamer 130 and the central axis of the cylinder 12 do not coincide with each other,

As shown in the center of the drawing, the reamer 130 is lowered in a state of being in one-point contact with the inner surface of the cylinder 12.

As shown on the right side of the drawing, when the reamer 130 is continuously lowered, a two-point contact state occurs, and a moment is generated by the reaction force at this time. The generated moment rotates the lower circular plate 142b about the remote elastic center, whereby the central axis of the reamer 130 and the central axis of the cylinder 12 are aligned to be corrected.

As described above, the cylinder deburring apparatus of a high-precision part according to the present invention provides a structure capable of automatically correcting an angular error and a position error when a reamer is inserted into a cylinder of a member to be machined, At the same time, the jig can move in the horizontal direction, thereby providing a structure capable of further completing the position error (eccentricity).

Therefore, the deburring operation can be performed irrespective of the degree of skill of the operator, and a constant machining quality can be maintained.

As described above, the preferred embodiment of the cylinder deburring apparatus of the high precision part according to the present invention has been described.

It is to be understood that the above-described embodiments are illustrative in all aspects and should not be construed as limiting, the scope of the invention being indicated by the appended claims rather than the foregoing description, It is intended that all changes and modifications derived from the equivalent concept be included within the scope of the present invention.

10: Workpiece
12: Cylinder
100: a deburring device
110:
120:
130: reamer
140:
150: centering device
160: Linear guide portion
170: Feed motor section

Claims (8)

A jig for fixing a workpiece provided with a cylinder;
A jig transferring unit for transferring the jig in a horizontal direction;
A reamer inserted into the cylinder of the workpiece;
A rotating motor unit for rotating the reamer;
A centering device provided between the reamer and the rotary motor to correct eccentricity and a deviation angle between the reamer and the cylinder;
A linear guide portion for guiding up and down movement of the rotary motor portion; And
And a vertical motor for moving the rotary motor part up and down.
The method according to claim 1,
Preferably,
A cutting portion for cutting the inner surface of the cylinder,
And a tapered guide portion formed above and below the cutting portion.
3. The method of claim 2,
And the taper angle of the guide portion is 5 占 1 1..
The method according to claim 1,
The centering device includes:
A pair of circular plates vertically arranged to face each other,
And a plurality of elastic bodies connecting the pair of discs.
5. The method of claim 4,
Wherein the elastic body is an ESP (Elastomer Shear Pad).
The method according to claim 1,
The jig transfer portion
A transfer table connected to the jig,
And a horizontal feed motor for feeding the feed table in a horizontal direction.
The method according to claim 6,
The jig
Wherein the eccentricity of the reamer flows in a horizontal direction with respect to the transfer table and compensates for eccentricity generated when the reamer is inserted.
8. The method of claim 7,
The jig
And a plurality of positioning pins inserted into the bottom surface of the workpiece.

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