JP2699185B2 - Deburring method and apparatus for valve body - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for deburring a valve body, and more particularly, to a method and an apparatus for performing deburring by spraying a high-pressure fluid ejected from a nozzle onto a valve body. It is about.

2. Description of the Related Art For example, a switching hydraulic circuit including a valve body and a spool that moves within a spool hole is often used in a control hydraulic circuit of an automatic transmission for an automobile. The valve body has a spool hole opened at one end thereof, and a plurality of slits extending from the spool hole in a direction intersecting the axis thereof and opening on the body peripheral surface. A hydraulic pipe is connected to each slit. Is done. On the other hand, the spool is provided with several communication holes that are opened on the outer peripheral surface that slides with the spool hole peripheral wall of the valve body. By changing the position of the spool in the spool hole, the communication hole is opened. The 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, the above-described valve body is formed by cutting or the like, but burrs often occur at the inner end (a portion continuous with the spool hole) or the outer end (a portion opened on the outer surface of the valve body) of the slit. As a device for removing such fine burrs, a so-called water jet type device has been conventionally known. This deburring apparatus removes burrs by ejecting a high-pressure fluid such as high-pressure water from a nozzle and spraying the high-pressure fluid onto the slit.

(Problems to be Solved by the Invention) However, when the above-described conventional deburring apparatus is used, a part of the burr may not be completely removed but may remain. In order to prevent such a problem from occurring, it is sufficient to carefully spray the high-pressure fluid onto the valve body many times. However, doing so will reduce 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 method and an apparatus capable of performing deburring of a valve body reliably and efficiently.

(Means and Actions for Solving the Problems) A first valve body deburring device according to the present invention comprises:
As described in claim 1, an inner nozzle for ejecting high-pressure fluid in a direction intersecting with an axis of a spool hole of the valve body, and an outer nozzle arranged such that the inner nozzle and the ejection port face each other at a predetermined interval. The nozzle moving means for moving both nozzles in the axial direction of the spool hole moves the two nozzles so that the inner nozzle enters the spool hole from the opening on one end side of the valve body and then retreats. By means of a nozzle swinging means for swinging both nozzles substantially around the axis of the spool hole, when the inner nozzle is in the spool, both nozzles are reciprocated along the slit of the valve body, and the high-pressure fluid to each nozzle When the two nozzles swing in one direction and the other direction by the flow path switching means that switches the flow of It is characterized in that the fluid is configured to switch the flow to eject.

Further, the second valve body deburring apparatus according to the present invention is such that the nozzle moving means is omitted from the first valve body deburring apparatus.

On the other hand, according to a third aspect of the present invention, there is provided a valve body deburring method, comprising: a spool hole opened at one end of the body; and a plurality of holes extending from the spool hole in a direction intersecting the axis and opening on the body peripheral surface. In a method of removing burrs of a valve body having a slit, a high-pressure fluid is ejected from an inner nozzle disposed inside the spool hole in a direction intersecting with an axis of the spool hole, and the inner nozzle and the ejection port have a predetermined interval. A high-pressure fluid is ejected from an outer nozzle arranged outside the spool hole so as to be placed and facing each other, and when the inner nozzle is inside the spool hole, both nozzles reciprocate around the axis of the spool hole substantially along the slit. When the two nozzles swing in one direction and the other direction, the flow is switched so that the high-pressure fluid is ejected from only one of the two nozzles and only the other. The feature is that it is obtained.

When the inner and outer nozzles are swung as described above, the burr on the slit end of the valve body receives the spray of the high-pressure fluid over its entire length. When the high-pressure fluid ejection from these nozzles is switched as described above, the burr receives a force that is once tilted toward the valve body center (or outer peripheral side) by the high-pressure fluid spray, and separates from the valve body main body there. Otherwise, the next time the direction of the nozzle swing changes, it will receive a force falling in the opposite direction, that is, toward the outer periphery (or the center) of the valve body. When the burr is folded back in this way,
The burr is surely separated from the valve body.

If a nozzle moving means for reciprocating both nozzles is provided as in the first deburring apparatus,
The two nozzles can be moved between the working position and the standby position within a short period of time so that deburring can be performed efficiently. In particular, a plurality of slits are provided apart from each other in the axial direction of the spool hole. By moving both nozzles with respect to the valve body by the nozzle moving means, the burrs of the plurality of slits can be efficiently removed.

(Examples) Hereinafter, the present invention will be described in detail based on examples shown in the drawings.

FIG. 1 shows a deburring device for a valve body according to an embodiment of the present invention. The holding member 11 fixed to the robot hand 10 that is moved three-dimensionally has a circular inner hole,
A substantially cylindrical nozzle support 12 is rotatably held around the center axis of the inner hole. A forward / reverse rotatable motor 13 is fixed to the robot hand 10, and a rotating shaft 14 of the motor 13 is coaxially connected to the nozzle support 12. Therefore, when the motor 13 is driven,
The nozzle support 12 rotates while sliding its outer peripheral surface against the inner peripheral surface of the holding member 11.

An annular groove 15 and an arc-shaped groove 19 are formed on the outer peripheral surface of the nozzle support 12. The nozzle support 12 is provided with two communication holes 16 at positions near the outer peripheral surface. One end of each of the communication holes 16 communicates with the annular groove 15,
The other end is open at 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 communication holes 16 are located at 180 ° intervals on a common circumference around the central axis of the nozzle support 12. Two hollow outer nozzles 17 extending in parallel with the central axis of the nozzle support 12 are mounted on the side end surfaces of the nozzle support 12 where these communication holes 16 are open. These outer nozzles 17 are in a state where their internal spaces communicate with the communication holes 16,
In addition, each ejection port 18 is attached so as to face each other.

The nozzle support 12 has a communication hole 20 having one end communicating with the arc-shaped groove 19 and the other end opening at a side end surface of the nozzle support 12.
Is provided. The opening position of the communication hole 20 is on the center of the nozzle support 12. And nozzle support 12
A hollow inner nozzle 21 extending in parallel with the outer nozzle 17 is attached to the side end surface of the above. The inner nozzle 21 is attached so that its internal space communicates with the communication hole 20. The inner nozzle 21 has two ejection ports 22 which are opposite to each other, and these ejection ports 22 are fixed in a direction facing the ejection ports 18 of the outer nozzle 17 respectively.

The inner ends of the holding members 11 are annular grooves 15 and arcuate grooves 19, respectively.
Are provided with two through-holes 23 and 24 communicating with. The two outlets 26, 27 of the switching valve 25 are connected to these through holes 23, 24, respectively. The switching valve 25 is provided with a flexible tube 28
Has one inlet 30 to which is connected.
While the solenoid 30 is kept shut off from the outlets 26 and 27, when the solenoid 31 is excited, the inlet 30 communicates with the outlet 26 depending on the excited state (eg, polarity), or the outlet 31 It is selectively switched to one of the states that communicate with 27. The flexible tube 28 is connected to a discharge port of the high-pressure water pump 32. The drive of the solenoid 31 of the switching valve 25 and the motor 13 is performed by a controller 33 which also controls the operation of the robot hand 10.
Is controlled by

It should be noted that three seal rings 29 are provided between the holding member 11 and the nozzle support 12, and the space between the through holes 23 and 24 and between them and the external space are watertight.

Hereinafter, the operation of the deburring apparatus having the above configuration will be described. The deburring valve body 50 has one end surface thereof.
A plurality of spool holes 51 opened at 50a and the spool holes 5
1 extends in the direction intersecting with the valve body axis from 1
0b, and a plurality of slits 52 opened to
The end surface 50a is fixed on the frame-shaped pallet 53 with the end face 50a facing the deburring device side. Then, the deburring device is brought into a state where 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 (the state shown in FIG. 1). At this time, the nozzle support 12 is
The rotation position where the outer nozzle 17 is located on the line shown in the figure is set.

In this state, the robot hand 10 is moved to the left in FIG. 1, and the inner nozzle 21 enters the spool hole 51. The ejection port 22 of the inner nozzle 21 and the ejection port 18 of the outer nozzle 17
When the robot hand 10 is opposed to the slit 52 (the rightmost one in FIG. 1) in the row, the robot hand 10 is stopped. Then, the controller 31 sets the solenoid 31 of the switching valve 25 to the first excitation state so that the inflow port 30 and the outflow port 26 communicate with each other. At the same time, the motor 13 is driven and the nozzle support 12 Is rotated counterclockwise within the angular range of 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 tube 28 flows through the through-hole 23, the annular groove 15, and the communication hole 16 into the two outer nozzles 17. And jets out strongly from each of those jet ports 18. Therefore, each slit 52 above and below the spool hole 51
, High-pressure water is sprayed from the outside toward the inside. When the nozzle support 12 is rotated as described above, the outer nozzle 17 swings from a position on the line in FIG. 2 to a position on the line in FIG. Becomes sprayed with water.

As shown in FIG. 3, burrs 55 may be formed at the ends of the slits 52, and the burrs 55
The burr 55 can be removed from the valve body 50 by spraying high-pressure water as described above. The burr 55 may not be completely separated from the valve body 50, but is bent at least from its base toward the spool hole 51.

When the nozzle support 12 is rotated through the angle range of θ, the motor 33 is rotated in the reverse direction by the controller 33, and the solenoid 31 of the switching valve 25 is set to the second excitation state. As a result, the high-pressure water
4.Supplied to the inner nozzle 21 through the arcuate groove 19 and the communication hole 20,
Jets are jetted from the two jets 22. Therefore, in this case, high-pressure water is sprayed from the inner side to the outer side to the upper and lower slits 52 of the spool hole 51. Motor 13
Is stopped by rotating the nozzle support 12 by the angle θ (that is, returning the outer nozzle 17 to the original position). When the motor 13 stops, the solenoid 31 is also demagnetized in conjunction with the stop.

By rotating the nozzle support 12 as described above, the two slits 52 are also sprayed with high-pressure water over the entire length in this case. As described above, the burrs 55 that could not be removed by spraying high-pressure water from the two outer nozzles 17 are bent inward from their bases,
Here, when high-pressure water is sprayed from the inside to the outside as described above, the burr 55 is folded back from its base to the opposite side, and this base is reliably cut and removed from the valve body 50. Become like

As described above, when the high-pressure water spray on the first row of slits 52 ends, the robot hand 10
The nozzle is moved a predetermined distance to the left in the drawing, and the ejection port 18 of the outer nozzle 17 and the ejection port 22 of the inner nozzle 21 face the two slits 52 in the second row. Thereafter, the same operation as described above is performed, and burrs generated in the slits 52 in the second row are removed.

Next, the robot hand 10 is further moved leftward in FIG. 1 by a predetermined distance, and the deburring process for the slits 52 in the third row is performed in the same manner. When the deburring process for all the slits 52 is completed as described above, the robot hand 10 is moved rightward in FIG. 1 and returned to the initial position. Thereafter, the robot hand 10 repeats the same operation for the other spool holes 51. Then, a new valve body 50 is fixed on the pallet 53 in place of the valve body 50 that has been deburred, and the deburring process is performed on the valve body 50 in the same manner as described above. Thus, the valve body 50 undergoes the deburring process one after another.

In the embodiment described above, the high-pressure water is sprayed on each slit 52 once from the outside and from the inside, respectively. However, the spraying may be performed more times. In order to guide the high-pressure fluid to the oscillating nozzle, the holding member 11 and the nozzle support 12 as in the above-described embodiment are used, and a flexible tube is connected to each nozzle more easily. You may.

(Effects of the Invention) As described above in detail, in the first and second valve body deburring devices according to the present invention, the inner nozzle and the outer nozzle that spray high-pressure fluid against the slit of the valve body are arranged along the slit. It is made to reciprocate and, at that time, according to the direction of the reciprocation, since the high-pressure fluid is ejected from only one of the inner and outer nozzles,
Burrs can be reliably removed by spraying a high-pressure fluid to the minimum required. Therefore, according to this device, the efficiency of deburring work of the valve body can be improved.

Also, the third deburring apparatus according to the present invention can reliably remove burrs only by ejecting high-pressure fluid only from the inside or outside of the spool hole of the valve body by reciprocating the nozzle substantially around the axis of the spool hole. Therefore, according to the present apparatus, the efficiency of the deburring operation can be improved.

[Brief description of the drawings]

FIG. 1 is a partially broken side view showing an apparatus according to an embodiment of the present invention, FIG. 2 is a partial front view showing a part of the apparatus according to the embodiment, and FIG. It is a fragmentary sectional view showing the valve body which receives. 10 ... Robot hand, 11 ... Holding member 12 ... Nozzle support, 13 ... Motor 15 ... Circular groove, 16, 20 ... Communication hole 17 ... Outer nozzle, 18, 22 ... Outlet 19 ... … Arc-shaped groove, 21… 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 face 51 Spool hole 52 Slit 55 Burr

Claims (3)

(57) [Claims] 1. A deburring device for a valve body, comprising: a spool hole opened at one end of a body; and a plurality of slits extending from the spool hole in a direction intersecting the axis thereof and opening on a peripheral surface of the body. An inner nozzle for ejecting a high-pressure fluid in a direction intersecting with the axis of the spool hole, an outer nozzle arranged such that the inner nozzle and the ejection port face each other at a predetermined interval, A nozzle moving means for reciprocating to enter and exit from one end of the body, and when the inner nozzle is in the spool hole, move both nozzles along the slit, substantially around the axis of the spool hole. A nozzle oscillating means for reciprocatingly oscillating, and when the two nozzles oscillate in one direction and the other direction, the high-pressure fluid is ejected from only one of the two nozzles and only from the other. Deburring machine of the valve body and the flow channel switching means for switching the flow so that is equal to or provided. 2. A deburring device for a valve body, comprising: a spool hole opened at one end of a body; and a plurality of slits extending from the spool hole in a direction intersecting the axis and opening on a peripheral surface of the body. An inner nozzle for ejecting a high-pressure fluid in a direction intersecting with the axis of the spool hole, an outer nozzle arranged such that the inner nozzle and the ejection port face each other at a predetermined interval, and both nozzles when the inner nozzle is inside the spool hole. A nozzle swing means for reciprocatingly swinging about the axis of the spool hole along the slit, and when the two nozzles swing in one direction and the other direction, only one of these two nozzles and the other respectively. And a flow path switching means for switching a flow of the high-pressure fluid so that the high-pressure fluid is ejected only from the valve body. 3. A method of deburring a valve body having a spool hole opened at one end of a body, and a plurality of slits extending from the spool hole in a direction intersecting the axis and opening on a peripheral surface of the body. A high-pressure fluid is ejected from an inner nozzle disposed inside the spool hole in a direction intersecting with the axis of the spool hole, and the inner nozzle and the ejection port are disposed outside the spool hole so as to face each other at a predetermined interval. High pressure fluid is ejected from the outer nozzle, and when the inner nozzle is in the spool hole, both nozzles are reciprocally oscillated about the axis of the spool hole along the slit, and the two nozzles are in one direction and the other direction. Wherein the flow is switched so that the high-pressure fluid is ejected from only one of the nozzles and the other from only the other nozzle.