JPH02167699A - Deburring device for valve body - Google Patents

Abstract

PURPOSE:To surely remove burrs only by performing the blasting of a high pressure fluid to the necessary min. extent by constituting the inner/outer nozzles blowing a high pressure fluid to the slit of a valve body so as to inject the high pressure fluid from only one part of the inner/outer nozzles according to the direction in reciprocating rocking along the slit. CONSTITUTION:At the time when the inner/other nozzles are rocked in one direction and the other direction by a current pass changing means, the current is changed over so that a high pressure fluid is injected from only one part and only the other part of the both nozzles respectively. In accordance with this changeover, the burr receives the force to knock down to the valve body center side once by the high pressure fluid blasting, and if it is not separated from the valve body main body, it receives the force to knock down to the opposite direction to the previous time, i.e., to the valve body outer-peripheral side at the time when the direction of the nozzle rocking is then changed. Thus in case of the burr being folded, the burr is surely separated from the valve body.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a deburring device for a valve body, and more particularly to a device for deburring a valve body by spraying high-pressure fluid ejected from a nozzle onto the valve body. It is.

(Prior Art) For example, switching valves consisting of a valve body and a spool that moves within its spool hole are often used in control hydraulic circuits of automatic transmissions for automobiles.

The above-mentioned valve body has a spool hole opened at one end, and a plurality of slits extending from the spool hole in a direction intersecting the axis of the spool hole and opening on the circumferential surface of the body, and a hydraulic pipe is connected to each slit. be done. On the other hand, the above-mentioned sboul is provided with several communication holes that open on the outer circumferential surface that slides on the spool hole peripheral wall of the valve body, and by changing the position of the spool in the spool hole, the communication holes can be The state of communication between the slits can be changed. By doing so, the connection state of the hydraulic circuit communicating with each slit is switched.

By the way, although the above-mentioned valve body is formed by cutting or the like, burrs often occur at the inner end (the part continuous with the spool hole) and the outer end (the part opening to the outer surface of the valve body) of the slit. A so-called water jet type device has been known as a device for removing such fine burrs. This deburring device removes burrs by ejecting high-pressure fluid such as high-pressure water from a nozzle and spraying the high-pressure fluid onto the slit portion.

(Problems to be Solved by the Invention) However, when the conventional burr removal device as described above is used, burrs may not be completely removed and a portion may remain. In order to prevent such problems from occurring, the valve body may be carefully sprayed with high-pressure fluid many times, but doing so will result in a decrease in the efficiency of the deburring operation.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a device that can reliably and efficiently deburr a valve body.

(Means and Effects for Solving the Problems) A valve body deburring device according to the present invention includes an inner nozzle that spouts high-pressure fluid in a direction intersecting the axis of a spool hole of a valve body, and a predetermined position between the inner nozzle and the spout. Outer nozzles are arranged to face each other at intervals, and a nozzle moving means that moves both nozzles in the axial direction of the spool hole allows the inner nozzle to move from the opening at one end of the valve body into the spool hole. When the inner nozzle is in the spool, both nozzles are moved into the slit of the valve body by a nozzle swinging means that moves both nozzles into the spool and moves them back and forth, and swings both nozzles approximately around the axis of the spool hole. When both nozzles are oscillated in one direction and the other direction, the flow path switching means switches the flow of high-pressure fluid to each nozzle. This device is characterized by being configured to switch the flow of high-pressure fluid so that it is ejected.

When the inner and outer nozzles are swung as described above, the burr attached to the slit end of the valve body is sprayed with high-pressure fluid over its entire length. When the high-pressure fluid jets from these nozzles are switched as described above, the burr receives a force that forces it once toward the center of the valve body (or toward the outer circumference) due to the high-pressure fluid jet, and if there, it separates from the valve body. Otherwise, the next time the nozzle swing direction changes, the valve body will be subjected to a force that forces it to fall in the opposite direction, that is, toward the outer periphery (or toward the center) of the valve body. When the burr is folded back in this manner, the burr is reliably separated from the valve body.

(Embodiments) Hereinafter, the present invention will be explained in detail based on embodiments shown in the drawings.

FIG. 1 shows a valve body deburring device according to an embodiment of the present invention. A holding member 11 fixed to a robot hand (0) that moves three-dimensionally has a circular inner hole, and a substantially cylindrical nozzle support 12 is held rotatably around its central axis within this inner hole. In addition, a motor 13 that can rotate in forward and reverse directions is fixed to the robot hand IO.
The rotation shaft 14 of this motor 13 is connected to the nozzle support 12.
is coaxially connected to. Therefore motor 13
When the nozzle support 12 is driven, the nozzle support 12 rotates while sliding its outer peripheral surface on the inner peripheral surface of the holding member 11.

An annular groove 15 and an arcuate groove 1 are formed on the outer peripheral surface of the nozzle support 12.
9 is formed. Further, the nozzle support 12 is provided with two communication holes 16 at positions close to its outer peripheral surface. One end of these communication holes 16 is connected to the annular groove 15.
The other end is open to the side end surface (left end surface in the figure) of the nozzle support 12. As shown in FIG. 2, the opening positions of these communicating holes 16 are spaced apart from each other by 180 degrees on a common circumference around the central axis of the nozzle support 12. Two hollow outer nozzles 17 extending parallel to the central axis of the nozzle support 12 are attached to the side end surface of the nozzle support 12 in which these communication holes 16 are opened. These outer nozzles 17 are installed so that their internal spaces communicate with the communication holes (B) and the respective ejection ports i8 face each other.

Further, the nozzle support 12 is provided with a communication hole 20 whose one end communicates with the arcuate groove 19 and whose other end opens at the side end surface of the nozzle support 12 . The opening position of the communication hole 20 is located above the center of the nozzle support 12. A hollow inner nozzle 21 extending parallel to the outer nozzle 17 is attached to the side end surface of the nozzle support 12 . The inner nozzle 21 is attached so that its inner space communicates with the communication hole 20. The inner nozzle 21 has two jet ports 22 facing oppositely to each other, and these jet ports 22 are fixed to face the jet ports 18 of the outer nozzle 17, respectively.

Each of the holding members 11 has an annular inner end. M15, two through holes 23 and 24 communicating with the arcuate groove 19 are provided. Two outlets 2B and 27 of the switching valve 25 are connected to these through holes 23, 24, respectively.

This switching valve 25 has one inlet 30 to which a flexible tube 28 is connected, and normally the inlet 30 and the outlet 26.2
However, when the solenoid 31 is energized, depending on the energized state (for example, polarity), the inlet 30 is kept in communication with the outlet 26, or the outlet 26 is kept in communication with the outlet 26.
7 can be selectively switched to one of the states in which it is communicated with.

The flexible tube 28 is connected to a discharge port of a high-pressure water pump 32. The driving of the solenoid 3i of the switching valve 25 and the motor i3 is controlled by a controller 33 that also controls the operation of the robot hand 10.

Note that three seal rings 29 are arranged between the holding member 11 and the nozzle support 12, and the spaces between the through holes 23 and 24 and between them and the external space are made watertight.

The operation of the deburring device having the above configuration will be explained below. The valve body 50 to be deburred has a plurality of spool holes 51 opened at one end surface 50a, and a plurality of slits 52 extending from the spool holes 51 in a direction intersecting the valve body axis and opened at the outer surface 50b of the body. It is fixed on a frame-shaped pallet 53 with the end surface 50a facing the deburring device side. The deburring device is brought into a state (the state shown in FIG. 1) in which the inner nozzle 21 is coaxially aligned with one spool hole 51 of the valve body 50 by the movement of the robot hand 10. Further, at this time, the nozzle support body 12 is set at a rotational position where the outer nozzle 17 is located on the line ``■'' shown in FIG.

In this state, the robot hand IO is moved to the left in FIG. 1, and the inner nozzle 21 enters the spool hole 51. The spout 22 of the inner nozzle 21 and the spout 18 of the outer nozzle 17 are connected to the slit 5 in the first row (also on the right in the middle row of FIG. 1).
2, the robot hand 10 is stopped. Then, the controller 33 sets the solenoid 31 of the switching valve 25 to the first excited state, and the inlet 30
The nozzle support 12 is rotated counterclockwise within the angular range θ shown in FIG. With the switching valve 25 in the above-described state, the high-pressure water pumped from the high-pressure water pump 32 through the flexible pipe 28 passes through the through hole 23, the annular groove 15, and the communication hole 16, and then reaches the two outer nozzles 1.
7 and is strongly ejected from each of the ejection ports 18. Therefore, each slit 52 above and below the spool hole 51
High-pressure water is sprayed from the outside to the inside. Further, as the nozzle support 12 is rotated as described above, the outer nozzle 17 swings from the position on the line ■ in FIG. It comes to be sprayed with the above-mentioned high-pressure water.

As shown in FIG. 3, a burr 55 is provided at the end of the slit 52.
This burr 55 often extends over the entire length of the slit 52, but by spraying high-pressure water as described above, this burr 55 is removed from the valve body. 50. Although the burr 55 may not be completely separated from the valve body 50, it is bent at least from its base toward the spool hole 51.

When the nozzle support 12 is rotated within an angle range of θ, the controller 33 rotates the motor 13 in the opposite direction, and at the same time, the solenoid 31 of the switching valve 25 is rotated.
is set to the second excitation state. As a result, high-pressure water passes through the through hole 24, the arcuate groove 19, and the communication hole 20, and then reaches the inner nozzle 2.
1 and is ejected from its two ejection ports 22. Therefore, in this case, high-pressure water is sprayed into the upper and lower slits 52 of the spool hole 51 from the inside to the outside. The motor 13 rotates the nozzle support 12 by an angle θ (that is, returns the outer nozzle 17 to its original position) and then stops.

When the motor i3 stops, the solenoid 3I is also demagnetized.

By rotating the nozzle support 12 as described above, the two slits 52 are also sprayed with high-pressure water over their entire lengths. As mentioned earlier, the burr 55 that could not be removed even by spraying high-pressure water from the two outer nozzles 17 is bent inward from its base, so the burr 55 is bent from the inside to the outside as described above. When high-pressure water is sprayed toward the burr 55, the burr 55 is folded back from its base to the opposite side, ensuring that the base is cut.
It becomes removed from the valve body 50.

As described above, when the high-pressure water spraying to the slits 52 in the first row is completed, the robot hand IO is moved a predetermined distance to the left in FIG. The spout 22 of the second row is
The slits 52 face each other. Thereafter, the same operations as described above are performed to remove the burrs that have formed in the slits 52 in the second row.

Next, the robot hand 10 is further moved a predetermined distance to the left in FIG. 1, and the slits 52 in the third row are similarly deburred. When the deburring process for all the slits 52 is completed as described above, the robot hand 10 is moved to the right in FIG. 1 and returned to the initial position. After that, the robot hand IO repeats the same operation for other spool holes 51. Then, a new valve body 50 is fixed on the pallet 53 in place of the deburred valve body 50, and the deburring process is performed on this valve body 50 in the same manner as described above.

In this way, the valve bodies 50 are successively subjected to the deburring process.

In the embodiment described above, high-pressure water is sprayed onto each slit 52 once from the outside and once from the inside, but it may be sprayed more times than that. In addition, in order to guide high-pressure fluid to the swinging nozzles, in addition to using the holding member (l) and the nozzle support 12 as in the above embodiment, it is also possible to more easily connect a flexible tube to each nozzle. You can.

(Effects of the Invention) As explained in detail above, in the valve body deburring device according to the present invention, the inner and outer nozzles are reciprocated along the slits while spraying high-pressure fluid to the slits in the valve body. At that time, high-pressure fluid is ejected from only one of the inner and outer nozzles depending on the direction of this reciprocating oscillation, so burrs are reliably removed by spraying the minimum amount of high-pressure fluid. It is now possible to do so. Therefore, according to the present device, it is possible to improve the efficiency of deburring and deburring the valve body.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway side view showing a device according to an embodiment of the present invention, FIG. 2 is a partial front view showing a part of the device according to the above embodiment, and FIG. 3 is a deburring process performed by the device according to the embodiment described above. FIG. 3 is a partial cross-sectional view showing a receiving valve body. lO... Robot hand 11... Holding member 12
... Nozzle support body 13 ... Motor 15 ...
Annular groove 16.20...Communication hole 17...
Outer nozzle 18.22... spout 19...
Arc-shaped groove 2t...inner nozzle 23.24...
・Through hole 25...Switching valve 26.27...Outlet 30...Inlet 31...Solenoid
32...High pressure water pump 33...Controller 50...Valve body 50a...Valve body end face 50b...Valve body outer surface 51...Spool hole 52...Slit 55
···Bari

Claims (1)

[Scope of Claims] A valve body deburring device having a spool hole opened at one end of the body, and a plurality of slits extending from the spool hole in a direction intersecting the axis of the spool hole and opening on the circumferential surface of the body, an inner nozzle that ejects high-pressure fluid in a direction intersecting the axis of the spool hole; an outer nozzle that is arranged so that the inner nozzle and the ejection port face each other at a predetermined interval; a nozzle moving means for reciprocating the body by entering the hole from one end side of the body and reciprocating the body; and when the inner nozzle is in the spool hole, moving both nozzles along the slit, approximately around the axis of the spool hole. a nozzle swinging means for swinging the high-pressure fluid back and forth, and a flow for switching the flow of the high-pressure fluid so that when the two nozzles swing in one direction and the other, the high-pressure fluid is ejected from only one of the two nozzles and only from the other, respectively. A valve body deburring device, characterized in that it is provided with a path switching means.