JP6089910B2 - Deburring and chamfering method and deburring and chamfering device - Google Patents

Description

  The present invention relates to a deburring and chamfering method and a deburring and chamfering process for removing a burr generated at a ridgeline part of a crossing part formed by intersecting two holes in a workpiece, and chamfering a ridgeline part. It relates to the device.

  In a member that communicates a plurality of pipelines with each other and performs a desired action on the fluid, when the pipelines are formed with holes, burrs are generated at the ridges at the intersections of the intersecting holes. When burrs are generated, the fluid flow is disturbed, or peeled burrs are clogged inside the pipe, so it is important to remove the burrs. As a method of deburring and chamfering the ridgeline part of the intersection formed by the through hole and the intersection hole that intersects the through hole, a working liquid in which a liquid and hard particles are mixed from one end of the opening of the through hole There is a technique in which chamfering is performed by removing the burrs at the intersecting portion by injecting the liquid and closing the other end of the through hole to allow the machining liquid to flow out from the intersecting hole. (For example, see Patent Document 1)

JP 2003-285268 A

In order to efficiently process the ridge line at the intersection in the conventional technique, the flow rate at the intersection is increased by increasing the flow rate of the processing liquid. In this case, since the flow velocity becomes faster even in the pipeline portion other than the intersection, the inner wall of the pipeline may be removed. In particular, when there are a plurality of cross holes, it is necessary to supply a larger amount of machining liquid in order to obtain a predetermined flow velocity, and the removal of the inner wall of the pipe line becomes larger in the pipe part on the supply side. When it is necessary to precisely control the flow rate, the flow rate cannot be increased because high accuracy is required for the inner diameter of the pipe.
The present invention has been made in view of the above circumstances, and a deburring and chamfering method capable of efficiently deburring and chamfering a ridge line portion of an intersecting portion of an intersecting hole without increasing the flow rate of a working fluid. It is another object of the present invention to provide a deburring and chamfering apparatus.

Feature of the invention according to claim 1 for solving the aforementioned problem, the workpiece having a through-hole and a pair of cross holes are holes perpendicular intersecting or oblique Komogomo difference in the middle of the through hole, wherein A deburring that has occurred on the ridge line of the intersection of the through hole and the pair of cross holes, and a chamfering process for chamfering the ridge line,

A first step of positioning a pair of the channel closure having a solid portion for closing said through-hole or the pair of cross holes, is inserted into the through hole or the pair of cross holes, at a distance from the edge line ,

A second step of connecting an injection port to one end of the through hole or one of the pair of cross holes not covered with the pair of flow path closures ;

Each step of the third step of supplying a machining liquid that is a mixture of liquid and hard particles to the inlet, injecting the machining liquid into the through hole, and removing the burrs generated on the ridgeline and chamfering the ridgeline. Is to include.

According to a second aspect of the present invention, there is provided a tank for storing a processing liquid in which a liquid and hard particles are mixed, a pump for discharging the processing liquid in the tank, and injecting the processing liquid supplied from the pump. an inlet, a through-hole, the holding table for holding a workpiece having a pair of cross holes are orthogonal cross or oblique Komogomo holes that difference in the through hole provided,

Deburring a burr generated on a ridge line intersecting the through hole and the intersection hole, and chamfering the ridge line, injecting the processing liquid from the injection port into one end of the through hole or one of the pair of intersection holes. In deburring and chamfering equipment,

A pair of flow path closures having a solid portion to block the through holes or the pair of cross holes;

Inserting means for inserting the pair of flow path closures into the through holes or the pair of intersecting holes and positioning them at a predetermined position;

Supplying the pressurized coating solution before Symbol inlet, the pair of the channel closure to position from the ridge line at a predetermined distance, and said pump is to a control device for controlling the insertion means .

According to the invention according to claim 1, it is possible to increase the flow rate of the machining fluid in the vicinity of the ridge line of the intersecting hole by the flow path closing tool, and it is possible to remove burrs generated in the ridge line part and chamfer the ridge line part. It is possible to realize a deburring and chamfering method that can be carried out efficiently and reduce the removal of other parts. In addition, burrs can be removed or chamfered with respect to a pair of ridge lines.

According to the second aspect of the present invention, it is possible to increase the flow rate of the machining fluid in the vicinity of the ridge line of the intersecting hole by the flow path closing tool, and to remove burrs generated on the ridge line of the intersecting hole, It is possible to realize a deburring and chamfering apparatus that can efficiently chamfer and reduce the removal of other parts of the hole. In addition, burrs can be removed or chamfered with respect to a pair of ridge lines.

1 is an overall conceptual diagram of a deburring and chamfering apparatus in an embodiment of the present invention. It is sectional drawing which shows the cross | intersection part of a cross hole. It is process drawing which shows the process process in embodiment of this invention. It is sectional drawing which shows the arrangement | positioning state in a flow-path closure tool and cross | intersection part in embodiment of this invention. It is sectional drawing which shows the arrangement | positioning state in the flow-path closure tool and cross | intersection part in other embodiment of this invention.

An embodiment of the present invention will be described.
A deburring and chamfering apparatus 1 shown in FIG. 1 includes a tank 2 that stores a machining fluid therein and a holding table 6 that holds a workpiece W. On the holding table 6, a positioning device (insertion means) 10a for moving the flow path closing tool 9a and a positioning device (insertion means) 10b for moving the flow path closing tool 9b are fixed at opposing positions. The positioning devices 10a and 10b can position the channel closing devices 9a and 9b at desired positions by a motor (not shown). The machining fluid in the tank 2 is supplied to the injection port 5 attached to the workpiece W via the pipe line 4 by the pump 3 to process the inside of the work part W. The processed liquid after the completion of processing is recovered in the tank 2 by a recovery pipe line 7 communicating with the tank 2 from the holding table 6. The processing liquid is a mixture of water or oil liquid and hard particles such as alumina or silicon carbide powder, and an agitator 8 for stirring the processing liquid in the tank 2 is provided above the tank 2 to prevent separation. In preparation.
The deburring and chamfering apparatus 1 includes a control device 30 that processes the inside of the hole of the workpiece W by executing a predetermined operation. The functional configuration of the control device 30 includes a machining fluid control unit 31 that controls the supply of the machining fluid, an insertion device control unit 32 that controls the feeding of the insertion device 9, and the like.

Here, the intersecting holes of the working part W will be described.
2A is a cross-sectional view of the workpiece cut at the crossing center of the crossing portion of the hole, and FIG. 2B is a cross-sectional view taken along line AA of FIG. As shown in FIG. 2A, when the through holes W1a and W1b are formed by drilling from the upper side after forming the through holes W2 to form intersecting holes, the burrs Wb are formed on the upper through holes W1a, Many occur on the ridgeline around W1b.

Below, the operation | movement of the deburring and the chamfering processing apparatus 1 is demonstrated based on process drawing 3. FIG.
The workpiece W is attached to the holding table 6 (S1). The channel closing devices 9a, 9b are inserted into the through holes W2 (intersection holes) by the insertion devices 10a, 10b and positioned to the first position. The first position sandwiches the intersection of the through hole W2 and the through hole W1a shown in FIG. 4A, and the tips of the flow path closures 9a and 9b correspond to the radius of the through hole W1a from the outer periphery of the through hole W1a. It is a position that has been retracted more than the distance to be (S2). The injection port 5 is attached to the opening of the through hole W1a. Here, it attracts | sucks to the work part W with magnetic force (S3). The pump 3 is activated to inject the machining fluid into the through hole W1a through the injection port 5. At this time, as shown in FIG. 4 (a), the cross-sectional area of the flow path is rapidly expanding at the intersection, so that the processing liquid on the outer periphery of the through hole W1a is directed toward the flow path closing devices 9a and 9b. It is attracted and the flow velocity increases. For this reason, the machining fluid having a high flow rate passes through the ridge line portion of the intersection, and the burrs of the ridge line portion and the tip end portion of the ridge line are efficiently removed (S4). After a lapse of a predetermined time necessary for performing the desired machining, the pump 3 is stopped to stop the supply of the machining liquid (S5). The channel closing devices 9a and 9b are positioned to the second position. The second position sandwiches the intersection of the through hole W2 and the through hole W1b shown in FIG. 4B, and the tips of the flow path closures 9a and 9b correspond to the radius of the through hole W1b from the outer periphery of the through hole W1b. This is the position that has been retracted by more than the distance (S6). The injection port 5 is attached to the opening of the through hole W1b (S7). The pump 3 is activated to inject the machining liquid into the through hole W1b through the injection port 5. The machining fluid having a high flow rate passes through the ridge line portion of the intersection, and the burrs of the ridge line portion and the tip of the ridge line are efficiently removed (S8). After a predetermined time elapses, the pump 3 is stopped and the supply of the machining liquid is stopped (S9). The channel closing devices 9a and 9b are retracted and removed from the through hole W2 (S10). The injection port 5 is removed from the opening of the through hole W1b (S10). The workpiece W is removed from the holding table 6 (S11).

  As described above, according to the present embodiment, it is possible to increase the flow rate of the machining fluid that flows in the vicinity of the ridge line portion of the intersecting portion, and it is possible to improve the efficiency of burr removal of the ridge line portion and chamfering of the tip. . Since the flow rate of the machining fluid is slow in the holes other than the intersecting portion, the effect of removing the wall surface of the hole is small, and the inner diameter accuracy of the hole is not lowered.

In the above embodiment, the flow path closing devices 9a and 9b are sequentially positioned at the two intersecting portions, and the burrs are removed from the ridge line portion and the tip is chamfered. However, the two intersecting portions may be simultaneously processed. . In this case, as shown in FIG. 5, the flow path closures 91a and 91b are inserted into the through holes W1a (intersection holes), and are retreated from the outer periphery of the through hole W2 by a distance corresponding to the radius of the through hole W2. Deploy. Similarly, the channel closing devices 92a and 92b are inserted into the through holes W1b (intersecting holes), and are disposed at positions retracted from the outer periphery of the through hole W2 by a distance corresponding to the radius of the through hole W2. The injection port 5 is attached to the opening of the through hole W2, and the machining fluid is supplied. If it carries out like this, the processing liquid can process the ridgeline part of two crossing parts continuously, and can shorten processing time.
Moreover, although the through hole is shown as an example of a straight line, the through hole may be bent. In this case, the flow path closing tool may be made of an elastic material and bent according to the bending of the through hole.

W: Workpiece 1: Deburring and chamfering processing device 2: Tank 3: Pump 4: Pipe line 5: Inlet 6: Holding stand 7: Collection line 8: Stirring device 9a, 9b: Channel closing device 10a, 10b : Positioning device 30: Control device 31: Processing fluid control unit 32: Insertion device control unit

Claims (2)

A through hole, said through the middle orthogonal cross or oblique Komogomo workpieces having a pair of cross holes are holes for the difference of the hole, deburring generated in the ridge line of intersection of said pair of cross hole and said through hole And chamfering the ridge line, a deburring and chamfering method,

A first step of positioning a pair of the channel closure having a solid portion for closing said through-hole or the pair of cross holes, is inserted into the through hole or the pair of cross holes, at a distance from the edge line ,

A second step of connecting an injection port to one end of the through hole or one of the pair of cross holes not covered with the pair of flow path closures ;

Each step of the third step of supplying a machining liquid that is a mixture of liquid and hard particles to the inlet, injecting the machining liquid into the through hole, and removing the burrs generated on the ridgeline and chamfering the ridgeline. Including deburring and chamfering methods.

A tank for storing a machining liquid in which liquid and hard particles are mixed, a pump for discharging the machining liquid in the tank, an inlet for injecting the machining liquid supplied from the pump, a through hole , and the through hole a holding table for holding a workpiece having a pair of cross holes are holes for differential orthogonal cross or oblique Komogomo into the hole,

Deburring a burr generated on a ridge line intersecting the through hole and the intersection hole, and chamfering the ridge line, injecting the processing liquid from the injection port into one end of the through hole or one of the pair of intersection holes. In deburring and chamfering equipment,

A pair of flow path closures having a solid portion to block the through holes or the pair of cross holes;

Inserting means for inserting the pair of flow path closures into the through holes or the pair of intersecting holes and positioning them at a predetermined position;

Supplying the pressurized coating solution before Symbol inlet, the pair of the channel closure to position from the ridge line at a predetermined distance, and said pump, and deburring with a control device for controlling the insertion means Chamfering device.

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