JP2000190216A - Machining method of mating face of die cast product and its device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a machining method of the mating face of a die cast product and its device which never generate a defective product owing to the included bubbles. SOLUTION: There are machining methods of the mating face of a die cast product. One is to carry out plastic machining by bringing a machining element 1 into intermittent or continuous pressure contact with the mating face of the die cast product by small areas. The other is characterized by carrying out plastic machining by bringing the processing element 1 into intermittent or continuous pressure contact with the mating face of the die cast product by small areas, after chamfering process of the corner of the mating face of the die cast product, prior to the plastic machining by the machining element 1. The machining element 1 to carry out plastic machining in intermittent or continuous contact with the mating face of the die cast product by small areas is mounted on a drive mechanism 3 through a holder.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for processing a mating surface of a die-cast product for processing so that a mating surface of a die-cast product to be connected can be completely sealed by an O-ring.

[0002]

2. Description of the Related Art Conventionally, a die-cast product made of an aluminum alloy or a zinc alloy such as a valve, a cock or a tank having a mating surface for connection is warped or inclined to the mating surface in a state of being die-cast. Because there is
It was not possible to hermetically connect each other via the ring. Therefore, in order to improve the smoothness of the mating surface after cutting the mating surface of the die-cast product to correct the warp and inclination, as shown in FIGS. It is necessary to perform roller burnishing and ball burnishing by pressing against the surface to be processed under the preload of the spring 22. For this reason, two processes of cutting and burnishing are required, and there is a problem that productivity is not good.
Moreover, when the die casting surface is cut, bubbles (nests) contained in the die casting may appear on the surface,
When this nest appears on the surface, even if burnishing, the nest remains on the surface and the sealing by the O-ring becomes incomplete,
When the nest is large, there is a problem that the nest must be discarded as a defective product, and when the air bubbles are small, the nest must be filled with a resin or the like and repaired so that a sealing failure does not occur.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide a method and an apparatus for processing a mating surface of a die-cast product in which no defective products are generated due to bubbles contained therein.

[0004]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention relates to a die casting product for performing plastic working by intermittently or continuously pressing a work piece on a mating surface of the die cast product by a small area. The surface processing method is the invention of claim 1, wherein the corner of the mating surface of the die-cast product is chamfered before the plastic working by the machine tool, and the machine tool is intermittently or continuously reduced in area on the mating surface of the die-cast product. A method of processing a mating surface of a die-casting product in which plastic working is performed by pressing each other, and a machining element that performs plastic working by pressing a small area intermittently or continuously on a mating surface of a die-casting product, According to a third aspect of the present invention, there is provided an apparatus for processing a mating surface of a die-cast product mounted on a drive mechanism via a holder. An apparatus for processing a mating surface of a die-cast product provided with a raw device is the invention of claim 4, and in the invention of claim 3 or 4, the apparatus for mating a surface of a die-cast product in which a machining element is attracted to a holder by magnetic force is claimed. In the invention of claim 3 or 4 or 5,
An apparatus for processing a mating surface of a die-cast product in which an upper end of an outer diameter of a processing element is brought into contact with a holder is the invention according to claim 6, and in the invention according to claim 3, 4 or 5 or 6, a fixed surface formed at a processing boundary of a processing surface. The invention of claim 7 is a die-cast product mating surface processing device provided with a cutter for cutting a bulge of a material exceeding the height, and in the invention of claim 3 or 4 or 5 or 6 or 7, cutting oil is applied to a surface to be processed. The invention of claim 8 is a die-casting product mating surface processing device provided with a refueling nozzle for supplying oil, and in the invention of claim 3 or 4 or 5 or 6 or 7 or 8, the drive mechanism moves the machining element up and down, Alternatively, an apparatus for processing a mating surface of a die-cast product which performs horizontal movement or rotational movement is provided as the invention of claim 9, wherein the apparatus is used for claim 3 or 4 or 5 or 6 or 7 or In the invention according to the eighth or ninth aspect, an apparatus for processing a mating surface of a die-cast product having one or a plurality of rollers is provided as a die-casting product. The apparatus for processing a mating surface of a product is the invention according to claim 11, wherein when one roller is performing processing, the other roller is provided with a number of rollers mounted so as to be in a position where processing is not performed, and each roller is substantially equivalent to each roller. An apparatus for processing a mating surface of a die-cast product, which is displaced by a width corresponding to a processing surface width.
According to a second aspect of the present invention, in the sixth aspect of the present invention, there is provided a die-cast product mating surface processing apparatus in which a driving force of a driving mechanism is transmitted to a machining element via a gear mechanism. And an apparatus for processing a mating surface of a die-cast product in which a speed change mechanism is incorporated in a gear mechanism.
4 is an invention.

[0005]

Next, a first preferred embodiment of the present invention will be described in detail with reference to FIG. Numeral 1 is a machining element composed of a hammer 1a attached to the holder,
The cross-sectional shape of the hammer 1a of the work piece 1 may be square, circular or elliptical, but R (arc) is formed at the corner of the impact tip surface so that the plastic working by the hammer 1a is performed smoothly. . It is assumed that the size of this R is larger than the swelling height of the die-cast material generated at the boundary between the processed portion and the unprocessed portion of the surface to be processed at the time of processing. Also,
The impact surface area of the hammer 1a is about 5 to 20 mm ² , and the pressing force applied to the work piece 1 is 60 kgf / mm ^2.
It is about. Reference numeral 3 denotes a drive mechanism for driving the work piece 1, and the drive mechanism 3 is a crank mechanism for moving the work piece 1 up and down. Reference numeral 5 denotes an eccentric cam ring of the drive mechanism 3. The eccentric cam ring 5 is fitted with an eccentric cam 6 of the drive mechanism 3, and rotates the machining element 1 mounted with the rod of the eccentric cam ring 5 as a holder at a cycle of 500 to 6000 rpm. It moves up and down with a stroke of 0.5 to 1 mm.
The surface to be processed is subjected to plastic working from 0.5 to 0.5 mm, and more specifically, is determined by the pressing force of the work piece 1, the area of the striking surface, the stroke, the feed speed of the workpiece, and the like.
Reference numeral 6 denotes an oil supply nozzle for supplying cutting oil to the surface of the workpiece. Reference numeral 7 denotes an ultrasonic generator. The ultrasonic vibration generator 7 includes a high-frequency oscillator 7a and a vibrator 7b attached to the pressurizer 1, and applies power of a resonance frequency from the high-frequency oscillator 7a to the vibrator 7b. As a result, the vibrator 7b mechanically expands and contracts at the resonance frequency due to the electrostriction phenomenon, and this mechanical vibration generates ultrasonic vibration, and the hammer 1 of the pressurizer 1
This is to give ultrasonic vibration to a.

[0006] In such a structure, first, the corner of the mating surface of the die-cast product is chamfered by about 30 to 45 degrees prior to the plastic working by the work piece 1. Avoid large burrs at the corners of the mating surfaces. Subsequently, when the hammer 1a as the work piece 1 attached to the holder is lowered most, a die-cast work piece made of an aluminum alloy or a zinc alloy is positioned on a table so that a tip end face of the hammer 1a becomes a processing reference position. After fixing, the cutting oil is supplied from the oil supply nozzle 6, and the ultrasonic vibration generator 7 is operated to operate the vibrator 7.
b) to generate an ultrasonic vibration to generate the hammer 1a of the pressurizer 1
To the ultrasonic vibration. In this state, the drive mechanism 3 is operated to move the work piece 1 up and down with a constant stroke to strike the workpiece, and to move the table at a constant feed speed, so that the hammer 1a of the work piece 1 On the other hand, a die-cast workpiece made of an aluminum alloy or a zinc alloy lubricated by a cutting oil is plastically worked to a working reference dimension by a fixed area. The feed amount of the table at this time is a hammer 1a for performing the next processing on a part of the processed surface.
It is preferable that the striking surfaces overlap to prevent a processing boundary line from being generated. In addition, by this plastic working, the air bubbles included in the die casting are pressed together with the skin, and the surface of the die casting is densified. further,
During this plastic working, the working speed is increased by the ultrasonic vibration applied to the work piece 1, and the surface roughness becomes good. The sliding frictional resistance of the hammer 1a is reduced by the cutting oil discharged from the oil supply nozzle 6, and the wear powder generated by the sliding of the hammer 1a during the plastic working is washed away by the cutting oil and removed from the surface to be processed. So
The hammer 1a does not bite the wear powder and lower the surface roughness.

Next, a second preferred embodiment of the present invention will be described in detail with reference to FIG. Reference numeral 1 denotes a processing element comprising a roller 1b attached to the holder.
The outer diameter of the roller 1b is larger than the height of the swelling of the die-cast material generated at the boundary between the processed portion and the unprocessed portion of the surface to be processed so that the plastic working can be performed smoothly. Reference numeral 3 denotes a drive mechanism for pressing and moving the work piece 1, reference numeral 6 denotes a cutting oil supply nozzle similar to the supply nozzle 6 of the preferred embodiment, and reference numeral 7 denotes an ultrasonic generator 7 of the preferred embodiment. Since they are the same ultrasonic generator, the same reference numerals are given and the description is omitted.

[0010] In the thus constructed device, first, the corner of the mating surface of the die-cast product is chamfered by about 30 to 45 degrees prior to the plastic working by the work piece 1. Avoid large burrs at the corners of the mating surfaces. Subsequently, a die-cast workpiece made of an aluminum alloy or a zinc alloy is positioned and fixed on a table so that the grounding position of the roller 1b as the processing element 1 attached to the holder becomes a processing reference position. The cutting oil is supplied from 6, and the ultrasonic vibration generator 7 is operated to generate ultrasonic vibration in the vibrator 7b to apply ultrasonic vibration to the roller 1b of the pressurizer 1.
In this state, if the drive mechanism 3 is actuated to move the work piece 1 under pressure, the roller 1b rolls on the surface to be processed, and the surface is plastically processed to the processing reference dimension. At this time,
The air bubbles contained inside the die cast are pressed together with their skin, and the die cast surface is densified. Further, at the time of this plastic working, the working speed is increased by the ultrasonic vibration applied to the work piece 1, and the surface roughness becomes good. further,
At the time of this plastic working, abrasion powder is generated due to friction between the roller 1b of the work piece 1 and the surface to be processed, but the cutting oil discharged from the oil supply nozzle 6 reduces the plastic working pressure of the roller 1b. Since the generated abrasion powder is washed away, the roller 1b does not bite the abrasion powder and lower the surface roughness of the workpiece. In this embodiment, the work piece 1 is a roller 1b, but a ball 1c supported by a universal ball receiver as shown in FIG.
It may be. Although the ball 1c is prevented from falling by the retainer, the ball 1c hangs down due to gravity, and the ball 1c is not accurately positioned on the processing reference plane during processing. Therefore, the ball 1c or the holder is made permanent magnet. Alternatively, it is preferable that the ball 1c be attracted by an electromagnet to prevent the ball 1c from sagging.

Next, a third preferred embodiment of the present invention will be described in detail with reference to FIG. Reference numeral 1 denotes a processing element comprising a roller 1b attached to the holder.
Is a pair of rollers 1b which are pivotally supported on the rotary flange 3a of the drive mechanism 3 by shifting the mounting positions by 180 °.
In addition, since the roller 1b performs a rotational movement via the holder by the rotating flange 3a, the side surface orthogonal to the rolling direction of the roller 1b is the processing front end. For this reason, R (arc) is formed at the corner of the roller 1b so that the plastic working is performed smoothly. The radius R is larger than the swell of the die-cast material generated at the processing boundary between the processed portion and the unprocessed portion so that the swell can be smoothly pushed outward without breaking the swell. 6 is an oil supply nozzle for cutting oil similar to the oil supply nozzle 6 of the preferred embodiment, and 7 is an ultrasonic generator similar to the ultrasonic generator 7 of the preferred embodiment. Description is omitted. Reference numeral 8 denotes a cutter attached to the holder of the work piece 1, and the cutter 8 is provided at a portion of the die casting material which grows gradually during processing, exceeding a certain height of the swell, that is, slightly above the surface to be processed. Since the cutting blade is arranged, when the bulge exceeds a certain height, the top is cut by the cutter 8 and the roller 1 is cut.
The load applied to b is reduced so that the plastic working is performed smoothly, thereby preventing the surface roughness from being lowered.

[0010] In the structure thus configured, first, the corner of the mating surface of the die-cast product is chamfered by about 30 to 45 degrees prior to the plastic working by the work piece 1. Avoid large burrs at the corners of the mating surfaces. Subsequently, the ground surface of the roller 1b of the work piece 1 attached to the holder is set to a processing reference position.
A workpiece made of die-casting made of aluminum alloy or zinc alloy is positioned and fixed on the table, cutting oil is supplied from oil supply nozzle 6, and ultrasonic generator 7 is operated to apply ultrasonic vibration to vibrator 7a. When the driving mechanism 3 is operated to rotate the rotating flange 3a while applying ultrasonic vibration to the roller 1b, the roller 1b attached to the holder is rotated by the rotating flange 3a so that the surface to be worked is processed. The die-casting surface is plastically worked by performing the above-described circumferential rotation. At this time, the air bubbles contained in the die casting are pressed together with their skin, and the surface of the die casting is densified. Also, during the plastic working, the processing boundary of the die casting surface gradually rises due to the roller 1b traveling on the work surface, but this rise is caused by the cutting of the cutter 8 arranged slightly above the work surface. Since the cutting is performed by the blade, the load applied to the roller 1b is substantially constant, and stable plastic working is performed, and the swelling is not broken and the surface roughness is not deteriorated. Further, during the plastic working, the working speed is increased by the ultrasonic vibration, and the surface roughness is further improved. Further, the plastic working resistance of the roller 1b is reduced by the cutting oil discharged from the oil supply nozzle 6, and the wear powder flows outward by the cutting oil ejected from the center to the outside. Does not enter the processing surface of the roller 1b to reduce the surface roughness.

In the above embodiment, the work piece 1 is a roller 1b. However, as shown in FIG. 5, a large number of balls 1c may be mounted on the drive mechanism 3 by a thrust bearing method. Further, as shown in FIG. 6, the drive mechanism 3 may be provided with one ball 1c mounted on a universal ball receiver. Further, as shown in FIG. 7, a force applied to one ball 1c from below is received by the upper end surface of the cutout step of the holder, and a force applied to the ball 1c from the front is received by the side surface of the cutout step of the holder. By holding the ball 1c by covering the outer peripheral surface of the holder with the cylindrical body 3c, the radial force received by the ball 1c during plastic working as in the case where the ball 1c is supported by the thrust bearing method As a result, a processed surface with high precision can be obtained without being lifted.

Further, as shown in FIG.
Thrust bearing 1 on rotating flange 3a of drive mechanism 3
5, the thrust bearing 15 may receive the upper portion of the outer diameter of the roller 1b attached to the holder to increase the rigidity of the processing element 1. Further, as shown in FIG. 8B, the holder of the roller 1b is separated from the rotating flange 3a of the drive mechanism 3, and the holder is rotatable and vertically movable so that the roller is provided on the lower surface of the rotating flange 3a. 1b
The rigidity of the work piece 1 may be increased by receiving the upper portion of the outer diameter of the work piece 1. In addition, as shown in FIGS. 8A and 8B, in order to increase the rigidity of the work piece 1, a configuration is adopted in which the upper outer diameter of the roller 1b is received on the lower surface of the thrust bearing 15 or the rotating flange 3a. When the roller 1b of the work piece 1 is separated from the surface to be processed, the rotation of the roller 1b is stopped. Therefore, when the roller 1b is again pressed against the surface to be processed, a slippage occurs between the surface to be processed and the roller 1b. As a result, the surface roughness is reduced, and as shown in FIG.
Rotating flange 3a with gears
A first gear 17a meshed with the rotating flange 3a with gears, and a second gear 17b meshed with the roller holding plate 16 with gears. A gear mechanism 17 is provided in which the first gear 17a and the second gear 17b are connected via a speed change mechanism 17c, so that the drive mechanism 3 allows the roller 1b of the work piece 1 to move away from the surface to be processed. The rotation of the driven rotary flange 3a is transmitted to the holder of the roller 1b, so that when the roller 1b is pressed against the surface to be processed, the processing is performed without causing slip and the surface roughness is reduced. Prevention and highly accurate processing can be performed.
The transmission mechanism 17c of the gear mechanism 17 allows the roller 1
By making the rotation speed of b different from the rotation speed of the rotary flange 3a as appropriate, it is possible to make the rotation most suitable for the plastic working conditions. Further, as shown in FIG. 8D, a first gear 17a meshed with the geared holder, a second gear 17b meshed with the geared rotary shaft flange 3a, and a first gear 17a and the second gear 17b are connected to a speed change mechanism 17c.
A gear mechanism 17 similar to the above is provided so that the roller 1b of the processing element 1 can be rotated even if the roller 1b is separated from the surface to be processed, and the roller 1b is pressed against the surface to be processed. Then, it is possible to prevent the surface roughness from being reduced by performing the processing without causing the slip and to perform the processing with high precision. Also, as described above, by providing the gear mechanism 17 with the transmission mechanism 17c, the roller 1b
The rotation speed of the rotating flange 3a can be made different from the rotation speed of the rotating flange 3a as appropriate to make the rotation most suitable for the plastic working conditions.

Further, as shown in FIG. 9, the roller 1b attached to the holder may be inclined at an angle α.
By inclining the roller 1b, the thrust force applied to the roller 1b during plastic working can be reduced, and the working pressure applied to the drive mechanism 3 can be reduced. The angle α varies depending on the height of the raised surface of the surface to be processed and the R of the corner of the roller, but is preferably about 20 degrees. Further, the ball 1c of the work piece 1 shown in FIGS. 5 and 7 is provided with a retainer for preventing the ball 1c from dropping. However, when the ball 1c hangs down due to gravity, the ball 1c is accurately positioned on the processing reference plane. Therefore, it is preferable to make the ball 1c or the holder permanent magnet or to attract the ball 1c by an electromagnet to prevent the ball 1c from hanging down.

Next, a fourth preferred embodiment of the present invention will be described in detail with reference to FIGS. 10 (a) and 10 (b).
Reference numeral 1 denotes a machining element composed of a roller 1b, and two of the machining elements 1 are pivotally supported on the distal end surface thereof using the horizontal rotation axis of the drive mechanism 3 as a holder. Reference numeral 6 denotes an oil supply nozzle similar to the oil supply nozzle 6 of the embodiment, and reference numeral 7 denotes an ultrasonic generator similar to the ultrasonic generator 7 of the embodiment. I do.

[0015] In the structure thus constructed, first, the corner of the mating surface of the die-cast product is chamfered by about 30 to 45 degrees prior to the plastic working by the work piece 1, and the work piece 1 is subjected to plastic working. Avoid large burrs at the corners of the mating surfaces. Subsequently, a roller 1 as a processing element 1 attached to a holder as a horizontal rotation axis of the drive mechanism 3
A die-cast workpiece made of an aluminum alloy or a zinc alloy is positioned and fixed on the table so that the grounding surface position b becomes the processing reference position. Subsequently, while supplying cutting oil from the oil supply nozzle 6, the ultrasonic generator 7 is operated to generate ultrasonic vibration on the vibrator 7 a, and a driving mechanism is provided while applying ultrasonic vibration to the roller 1 b of the processing element 1. When the holder 3 is moved, the surface to be processed is alternately beaten by the rollers 1b and plastically processed by the rotation of the holder as a horizontal rotation axis.
The amount of processing per roller 1b is small, and the bulge generated on the surface to be processed is small. At the time of this plastic working, the air bubbles contained inside the die casting are pressed for each skin, and the surface of the die casting is densified. Also, during this plastic working, wear powder generated by friction between the roller 1b and the surface to be processed is washed away by the cutting oil discharged from the oil supply nozzle 6, so that the wear powder is caught in the processing surface of the roller 1b. The surface roughness does not deteriorate. In this embodiment, the two rollers 1b are provided on the same surface of the horizontal rotating shaft as a holder. However, as shown in FIGS. 11 (a) and 11 (b), a driving mechanism is provided. When one roller 1b is working on a horizontal rotating shaft as a holder of No. 3, each roller 1b is mounted so that the other roller 1b is at a position where processing is not performed, and a large number of mounted rollers 1b are mounted. The positions of the rollers 1b are shifted from each other by an amount substantially equal to the processing surface width, and one rotation of the horizontal rotating shaft makes the total number of rollers 1b ×
Plastic working within the range of the roller width is performed. By arranging many rollers 1b in this way,
The impact during processing by the roller 1b can be reduced, and the processing speed can be increased. At this time, since the plastic working is sequentially performed by each one roller 1b, the working pressure may be substantially the same as in the case of one roller 1b. However, when the working speed is high and the working pressure is insufficient, What is necessary is just to narrow the width of the roller 1b according to the number of the rollers 1b. In addition, the arrangement of each roller 1b is set to be substantially equal to the width of the processing surface of the roller so that a part of the processing surface is overlapped so that a linear pattern is not generated at the processing boundary with the adjacent roller 1b.

Next, a fifth preferred embodiment of the present invention will be described in detail with reference to FIG. Reference numeral 1 denotes a pressing element including a roller 1b mounted on a holder. The pressing element 1 is mounted on a feed mechanism 10 provided in a drive mechanism 3. The feed mechanism 10 is a rack 12 which is vertically moved by a cylinder 11. A pinion 13 meshed with the rack 11; and the pinion 1 having the pressurizer 1 attached to one end.
3 and a horizontal rack 14 meshed with the feed mechanism 1
0 is a rack 12 which is moved up and down by the operation of the cylinder 11
The pressurizer 1 is moved in the processing direction by a horizontal rack 14 which moves horizontally via a pinion 13 in accordance with the vertical movement of the pressurizer. Reference numeral 6 denotes an oil supply nozzle similar to the oil supply nozzle shown in the embodiment, and reference numeral 7 denotes an ultrasonic generator similar to the ultrasonic generator shown in the embodiment. I do.

[0017] In the thus constructed device, first, the corner of the mating surface of the die-cast product is chamfered by about 30 to 45 degrees prior to the plastic working by the work piece 1, and the work piece 1 is subjected to plastic working. Avoid large burrs at the corners of the mating surfaces. Subsequently, while supplying cutting oil from the oil supply nozzle 6, the ultrasonic generator 7 is operated to apply ultrasonic vibration to the roller 1b of the processing element 1. Next, the drive mechanism 3 is actuated to lower the position of the drive mechanism 3 of the processing apparatus body so that the roller 1b of the pressurizer 1 is at the processing reference position of the die-cast workpiece made of an aluminum alloy or a zinc alloy. When the workpiece is pressed against the workpiece, the workpiece is plastically worked by the rotating roller 1b.
The roller 1b rotates to perform plastic working of the workpiece, and at the same time, the cylinder 11 of the feed mechanism 10 operates to raise the rack 12 continuously.
With the rise, the pinion 13 rotates clockwise, and the pinion 13 continuously moves the horizontal rack 14 to the left. With the movement of the horizontal rack 14, the roller 1b as the machining element 1 moves while drawing a spiral trajectory on the unprocessed surface while rotating, and the surface of the circular workpiece is plastically worked in a spiral shape. It will be. At this time, the air bubbles contained in the die casting are pressed together with their skin, and the surface of the die casting is densified. Further, at the time of this plastic working, the working speed is increased by the ultrasonic vibration applied to the work piece 1, and the surface roughness becomes good. Further, during the plastic working, abrasion powder is generated due to the friction between the roller 1b of the work piece 1 and the surface to be processed. However, the cutting discharged from the oil supply nozzle 6 to reduce the plastic working pressure of the roller 1b. Since the generated wear powder is washed away by the oil, the roller 1b does not bite the wear powder and lower the surface roughness of the workpiece.

[0018]

As is apparent from the above description, the present invention provides plastic working by intermittently or continuously pressing small areas of a mating surface of a die-cast work made of an aluminum alloy or a zinc alloy with a work piece. By doing so, a uniform finish processing surface can be obtained and processing can be performed with a small pressing force, so that the apparatus can be reduced in size and inexpensive. Moreover, since the surface of the workpiece can be finished to a predetermined size by a series of plastic working,
As in the related art, two steps of performing a cutting process and then performing a burnishing process are only one process, and the processing is completed in the time required for the conventional cutting process, so that productivity can be significantly improved. . In addition, since plastic processing does not expose bubbles in the die-cast product to the surface unlike conventional cutting processing, defective products due to bubbles (nests) do not occur, and the yield can be greatly improved. Moreover,
Since there is no need to repair small nests (bubbles) by filling them with fillings as in the prior art, the productivity is extremely high.
Further, since the plastic working by the work piece densifies the die casting surface, it also has an effect of improving the durability. In addition, by chamfering the corners of the mating surface of the die-cast product prior to the plastic working with the machining element, it is possible to prevent large burrs from being generated at the corners of the mating surface of the die-cast product due to plastic working, and I try not to hurt my fingers. In addition, by applying ultrasonic vibration to the machining element, the plastic working speed can be increased, and the roughness of the machined surface can be further improved. further,
By providing a cutter for cutting a bulge generated on the surface during processing, the load applied to the processing element is reduced, so that plastic processing is performed smoothly and the surface roughness is not deteriorated. In addition, since the wear powder can be washed away by the cutting oil discharged from the oil supply nozzle in order to reduce the processing resistance, the work piece does not bite the wear powder and does not deteriorate the surface roughness. Furthermore, when a large number of rollers are used for the processing element in order to increase the processing area, while one roller is performing processing, the other rollers are pivotally supported at a position where processing is not performed. The pressure required for processing is substantially the same as that of a single roller, and has various advantages such as no need for a large apparatus. Therefore, the present invention greatly contributes to the development of the industry as a method and an apparatus for processing a mating surface of a die-cast product which has solved the conventional problems.

[Brief description of the drawings]

FIG. 1 is a front view showing a first preferred embodiment of the present invention.

FIG. 2 is a front view showing a second preferred embodiment of the present invention.

FIG. 3 is a front view of a main part having a ball as a pressurizer used in a second preferred embodiment of the present invention.

FIG. 4 is a front view showing a third preferred embodiment of the present invention.

FIG. 5 is a front view of a main part showing a state in which a ball of a pressurizer used in a third preferred embodiment of the present invention is supported by a thrust bearing system.

FIG. 6 is a front view of a main part showing a state in which a ball of a pressurizer used in a third preferred embodiment of the present invention is supported by a universal ball receiver.

FIG. 7 is a partially cutaway front view of a main part showing a state in which a ball of a pressurizer used in a third preferred embodiment of the present invention is supported by another mounting structure.

FIG. 8 (a) is a partially cutaway front view of a main part showing a state in which a roller of a pressurizer used in a third preferred embodiment of the present invention is supported by a thrust bearing. (B) It is a partially cutaway front view of a main part showing a state where a roller of a pressurizer used in a third preferred embodiment of the present invention is supported by a holder. (C) It is a partial cutaway front view of an important part showing another example in which a roller of a pressurizer used in a third preferred embodiment of the present invention is supported by a thrust bearing. (D) It is a partial cutaway front view of an important part showing another example in which a roller of a pressurizer used in a third preferred embodiment of the present invention is supported by a holder.

FIG. 9 is a front view of a main part showing a state in which a roller of a pressurizer used in a third preferred embodiment of the present invention is supported by being inclined.

FIG. 10 (a) is a front view showing a fourth preferred embodiment of the present invention. (B) It is a top view showing the 4th preferred embodiment of the present invention.

FIG. 11 (a) is a front view showing another example of the pressurizer used in the fourth preferred embodiment of the present invention. (B) It is a top view showing other examples of a pressurizer used for a 4th preferred embodiment of the present invention.

FIG. 12 is a partially cutaway front view showing a fifth preferred embodiment of the present invention.

FIG. 13 is an explanatory view showing conventional roller burnishing.

FIG. 14 is an explanatory diagram showing conventional ball burnishing.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Workpiece 1a Hammer 1b Roller 1c Ball 3 Drive mechanism 6 Refueling nozzle 7 Ultrasonic generator 8 Cutter 17 Gear mechanism 17c Transmission mechanism

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Akira Seki 1 Toyota Town, Toyota City, Aichi Prefecture Inside Toyota Motor Corporation (72) Inventor Masahiko Takeuchi 1 Toyota Town Toyota City, Toyota City Inside Toyota Motor Corporation ( 72) Inventor Masaaki Sugiyama 4-52 Honchi-cho, Toyota City, Aichi Prefecture, Ryoei Engineering Co., Ltd. (72) Inventor Hideo Niwa 4-52 Honchi-cho, Toyota City, Aichi Prefecture, Ryoei Engineering Co., Ltd. (72) Inventor Takuya Hirano 4-52 Honchicho, Toyota City, Aichi Prefecture Inside Ryoei Engineering Co., Ltd.

Claims (14)

[Claims] 1. A method for processing a mating surface of a die-cast product, wherein a work piece (1) is intermittently or continuously pressed in a small area on the mating surface of the die-cast product to perform plastic working. 2. A method for chamfering a corner portion of a mating surface of a die-cast product prior to plastic working by a machine tool (1), and intermittently or continuously reducing the area of the machine tool (1) on the mating surface of the die-cast product. A method for processing a mating surface of a die-cast product, wherein plastic working is performed by pressing each other. 3. A machining element for performing plastic working by intermittently or continuously pressing a small area on a mating surface of a die casting product.
A mating surface processing apparatus for die-cast products, wherein (1) is mounted on a drive mechanism (3) via a holder. 4. The apparatus for processing a mating surface of a die-cast product according to claim 3, further comprising an ultrasonic vibration generator (7) for applying ultrasonic vibration to the processing element (1). 5. The apparatus according to claim 3, wherein the work piece (1) is attracted to the holder by magnetic force. 6. The apparatus for processing a mating surface of a die-cast product according to claim 3, wherein an upper end of an outer diameter of the processing element (1) is in contact with the holder. 7. A die-cast product mating surface processing apparatus according to claim 3, further comprising a cutter (8) for cutting a bulge of the material exceeding a certain height at a processing boundary of a surface to be processed. . 8. An oil supply nozzle for supplying cutting oil to a surface to be processed
The apparatus for processing a mating surface of a die-cast product according to claim 3, wherein (6) is provided. 9. A drive mechanism (3) moves the work piece (1) up and down,
The apparatus for processing a mating surface of a die-cast product according to claim 3, wherein the apparatus performs horizontal movement or rotational movement. 10. The work piece (1) has one or a plurality of rollers.
Claim 3 or 4 or 5 or 6 or 7 which is (1b).
Or a mating surface processing apparatus for a die-cast product according to 8 or 9. 11. The apparatus for processing a mating surface of a die-cast product according to claim 10, wherein the processing element (1) is an inclined roller (1b). 12. When one roller (1b) is processing, the other roller (1b) is attached to a position where processing is not performed. )
The position is shifted by an amount substantially equivalent to the width of the machined surface.
10. A mating surface processing apparatus for a die-cast product according to item 0. 13. The apparatus according to claim 6, wherein the driving force of the driving mechanism (3) is transmitted to the machining element (1) via the gear mechanism (17). 14. The apparatus according to claim 13, wherein a transmission mechanism (17c) is incorporated in the gear mechanism (17).