JPH0735146Y2 - Inspection device for clogging between ribs of disk rotor - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gap between ribs connecting disks of both outer and inner sliding surfaces in a manufacturing process such as casting and cutting of a so-called ventilated type disk rotor. The present invention relates to an inspection device capable of detecting the presence or absence of a portion where core sand, cutting dust, etc. are clogged and removing a clogged disk rotor.

[0002]

2. Description of the Related Art As shown in FIG. 6, a ventilated type disk rotor has a hollow portion F formed between a rib C, D and E connecting both outer and inner sliding surface disks A and B. Conventionally, as one of the means for inspecting whether there is an unexpected failure cause due to the presence of inclusions G due to clogging of core sand due to seizure of child sand, poor disintegration, etc., and clogging of cutting waste during cutting, etc. Is, as shown in FIG.
The light source J is placed inside the disc rotor I placed above,
There is a means for visually inspecting a worker whether or not the light source J can be visually recognized from the outer peripheral surfaces of the outer disc K and the inner disc L through the void portion F.

As another means, as shown in FIG. 8, the cast disk rotor I is placed on a rotary mount H,
A means is also known in which the presence or absence of the inclusion G in the void portion F is identified by the camera N of the image processing apparatus M facing the outer peripheral surface, and is visually recognized by the video monitor-P via the visual controller O.

However, in the means shown in FIG. 7, it is necessary to maintain the concentration for a long time, and there is a possibility that oversight may occur in spite of a large number of workers and a long working time.
In the means shown in (1), an image processing apparatus is required, so that the equipment cost is increased, and each means has a problem that the number of steps, the number of personnel, and the cost are increased.

[0005]

In view of the problems of the above-mentioned conventional means, the present invention does not require the visual recognition of the void portions F at all times, and is a relatively simple device, and the intervention in each void portion F is possible. An object of the present invention is to provide an inspection device capable of automatically and surely detecting the presence or absence of the object G and issuing an alarm.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the invention of claim 1 provides a plurality of outer and inner sliding surface disks radially arranged at intervals. A rotary table on which the disk rotors connected by ribs are placed and rotated around the axis, and a high-pressure air jet pipe arranged close to the outer peripheral surface of the disk rotor ribs on the rotary table in the normal direction. The jet pipe is slidably fitted with a float having a pressure-receiving umbrella for blown back high-pressure air, and the float is always held in a stationary position. It is assembled so as to slide to a detection position when receiving a predetermined amount or more of blown back air, and a float movement detection device is arranged at the detection position, and a detection signal of the detection device is input. An alarm device is installed It has a configuration that there.

According to a second aspect of the present invention, the float is slidably fitted to a reverse jet absorption pipe surrounding a jet pipe of high pressure air.

[0008]

According to the invention of claim 1, when the rotary table is rotated while the high pressure air is continuously ejected from the ejection pipe on the peripheral surface of the disk rotor on the rotary table, when the void portion is not clogged, the spraying is performed. The high-pressure air that has hit the rib end face blows back some high-pressure air, but most of the high-pressure air does not blow through the void and push back the pressure receiving umbrella of the float, but if the void is clogged, The high pressure air violently blows back, pushing the pressure receiving umbrella of the float,
The float moves away from the peripheral surface of the disc rotor along the jet pipe.

The moving distance of the float due to the blowback of the high-pressure air is previously determined to be a fixed length, this portion is determined as a detection position, and a detection device such as a photoelectric tube sensor is arranged, and the detection of the detection device is performed. The signal is input to an alarm device such as a buzzer to announce the presence of a clogged void.

According to the second aspect of the present invention, since the position where the float having the pressure receiving umbrella is arranged can be provided at a position apart from the nozzle portion of the high pressure air jet pipe, that is, the peripheral surface of the disk rotor, the general-purpose inspection apparatus can be used. The nature is wide.

[0011]

1 to 4 show an embodiment of the invention according to claim 1, wherein a ventilated type disk rotor 1 is an outer sliding surface disk 2 similar to a known one.
The inner sliding surface disk 3 and the inner sliding surface disk 3 are connected to each other by a plurality of ribs 4 arranged radially at intervals.

The disk rotor 1 described above is fixed to the mounting surface 7 of the rotary table 6 of the inspection device 5 by the chuck claws and the positioning stopper 8.

A disk rotor 1 fixed on a rotary table 6.
In the outer surface area of the, a nozzle 11 of a high-pressure air jet pipe 10 that is arranged close to the outer peripheral surface 9 of the rib 4 in the normal direction is fixed to the machine base 12.

The jet pipe 10 described above has a float 14 having a pressure receiving umbrella 13 which is widened toward the outer peripheral surface 9.
Is fitted so as to be slidable in the length direction of the jet pipe 10.

As shown in FIGS. 2 and 3, the float 14 described above is formed with a pressure receiving umbrella 13 having a frustoconical outer shape, and the through hole 16 of the head portion 15 forms a minute gap in the jet pipe 10. And is slidably fitted, and the bottom edge 17 of the pressure receiving umbrella 13 is attached.
As shown in FIG. 1, is disposed close to the outer peripheral surface portions of the outer sliding surface disk 2 and the inner sliding surface disk 3.

As shown in FIG. 1, if there is an inclusion 19 such as core sand or cutting chips in the void portion 18 between the ribs 4 of the outer sliding surface disc 2 and the inner sliding surface disc 3, the jet pipe is present. 3.5 ejected from 10 nozzles 11
The high-pressure air 20 of about 7 Kgf / cm ² is blown back into the air 21 from the void portion 18 and the pressure-receiving umbrella 13 of the float 14 is blown.
Toward the pressure receiving head 13 and the float 14 changes its position as indicated by a chain line 14 '.

The position where this is blown up is the float 14
, The amount of high-pressure air jetted, the size of the void portion 18, the cross-sectional area of the ribs 4, etc., but the void portion 18 is set at a substantially fixed position for each type of disk rotor to be inspected.
When the float is completely blocked by the inclusions 19,
A detection position is a position where the air is blown up along the ejection pipe 10, and a detection device 22 such as a photoelectric tube sensor is provided at this position.
And a warning device 23 such as a buzzer to which a detection signal of the detection device 22 is input.

In the case of the embodiment shown in FIG. 1, the float 14 blows out when the blow-back air 21 does not act.
It is brought into contact with a stopper (not shown), which is provided at the lower part of the figure, by its own weight and is held at a stationary position.

The inspection apparatus shown in FIG. 1 may be used alone in an independent inspection process, but in FIG. 4, the inspection apparatus according to the present invention is incorporated into the cutting portion of the cutting machine 24 of the disk rotor 1. It is an example of the usage.

In FIG. 4, the disc rotor 1 includes a chuck claw 26 and a stopper 2 which are operated by operating a lever 25.
When the rotary head 28 is fixed to the rotary head 28 by the start button 29 and the rotary button 28 starts to rotate, the tool post slider 30 starts to move forward to the processing position at the same time as the high pressure air supply circuit 31. the inserted contact dog 33 is in mechanical valve 32 which is supplied to the jet pipe 10 high pressure air through the supply circuit 31, ejected a certain time the high pressure air toward the disc rotor 1, the clogging of the gap portion 18 Existence is checked.

In the gap portion 18 of the disk rotor 1, FIG.
If there is an inclusion 19 as shown in Fig. 4, the float 14 rises as described above and occupies the detection position shown by the chain line 14 ',
Since this is detected by the detection device 22 and the alarm device 23 notifies the presence of a defective product, the cutting machine 24 is stopped and the defective disk rotor 1 is replaced with another unprocessed disk rotor.

If there is no clogging of the core sand in the inspection after the start of the processing, and if the cutting waste resulting from the cutting operation enters the void portion 18, when the tool post slider 30 retreats due to the completion of the cutting, The dog 34 at the front part of the slider 30 again contacts the mechanical valve 32, and the high-pressure air is jetted again for a certain period of time, and the presence or absence of clogging of the void portion 18 is inspected.

FIG. 5 shows an embodiment of the invention according to claim 2, which is an embodiment in which the rotary table 35 is horizontally arranged and the disk rotor 1 is mounted on the upper surface thereof, and the void portion 1
8 is horizontally arranged, and the high-pressure air jet pipe 36 is also horizontally arranged.

In the embodiment shown in FIG. 5, a large-diameter reverse jet absorption pipe 37 is arranged so as to surround the ejection pipe 36, and the opening 38 which is the front end of the reverse jet absorption pipe is opposed to the peripheral surface of the disk rotor 1. The rear end 39 is sealed, and a branch pipe 40 that rises upward is provided near the rear end 39, and a float having the pressure receiving umbrella 13 on a guide rod 41 that is erected at the axial center of the branch pipe. 14, detection device 22, alarm device 2
An inspection device consisting of 3 etc. is attached, but the operation is as shown in FIG.
Is exactly the same as that shown in.

[0025]

The present invention has the above-described structure and operation. According to the first aspect of the present invention, the rotary base on which the disk rotor is fixed is rotated and is directed toward the peripheral surface of the disk rotor. By ejecting high pressure air from the ejection pipe,
Since it is possible to automatically detect a void portion clogged with inclusions and issue an alarm without constantly observing the void portion, it is possible to ensure the inspection work and improve the work efficiency.

Further, since the inspection work can be carried out as a single process or as an inspection work incorporated in a cutting machine, there is an effect that it is possible to reduce the number of processes and the number of personnel.

Further, since the mechanism is relatively simple and the equipment cost can be kept low, the cost increase can be minimized.

According to the second aspect of the present invention, since the position where the float is disposed can be separated from the peripheral surface of the disk rotor, there are restrictions due to the structure of the disk rotor or the restrictions of the structure of the attached processing machine. The number can be reduced, and the versatility of the inspection device can be widened.

[Brief description of drawings]

FIG. 1 is a side view showing a partial cross section of an essential part of an embodiment of the invention of claim 1;

FIG. 2 is a side view of the float.

FIG. 3 is a bottom view of the float.

FIG. 4 is a schematic side view of a cutting machine equipped with the device shown in FIG.

FIG. 5 is a side view showing, as a partial cross section, a main part of an example of implementation of the invention of claim 2.

FIG. 6 is a partial schematic plan view of a disk rotor having inclusions in a void portion.

FIG. 7 is a side view showing a cross section of a part of an essential part of an example of a conventional inspection apparatus.

FIG. 8 is a side view showing a part of a main part of another example of the conventional inspection apparatus as a cross section.

[Explanation of symbols]

 1 Disc Rotor 2 Outer Sliding Surface Disc 3 Inner Sliding Surface Disc 4 Rib 5 Inspection Device 6 Rotating Base 9 Outer Surface 10 Spout Pipe 13 Pressure Receiving Umbrella 14 Float 18 Void 19 Inclusion 22 Detection Device 23 Alarm Device

Claims (2)

[Scope of utility model registration request] 1. A disc rotor, in which outer and inner sliding face discs are connected by a plurality of ribs radially arranged at intervals, is mounted and rotated about an axis. The rotating table and the outer peripheral surface of the rib of the disk rotor on the rotating table have a high-pressure air jet pipe arranged close to each other in the normal direction, and the high-pressure air blown-back air of the jetted high-pressure air is provided in the jet pipe. A float having a pressure receiving umbrella is slidably fitted, and the float is always held in a stationary position so that when the pressure receiving umbrella receives a predetermined amount or more of blown back air, it slides to a detection position. A device for inspecting clogging between ribs of a disk rotor, which is mounted on the detection position, and in which a detection device for float movement is arranged, and an alarm device for inputting a detection signal from the detection device is arranged. 2. A disc rotor, in which outer and inner sliding surface discs are connected by a plurality of ribs radially arranged at intervals, is mounted and rotated about an axis. A rotary table and a jet pipe for high pressure air, which are arranged close to each other in the normal direction on the outer peripheral surface of the rib of the disk rotor on the rotary table, are provided around the jet pipe to surround the jet pipe.
A reverse jet absorption pipe with a larger diameter than the
The opening of is opposed to the peripheral surface of the disk rotor,
A float having a pressure receiving umbrella for blown back air of the ejected high pressure air is slidably fitted to the jet pipe of the reverse jet in the reverse jet absorption pipe , and the float is always held at a stationary position, The pressure receiving umbrella is assembled so as to slide to the detection position when receiving a predetermined amount or more of blown back air, and a detection device of the float movement is arranged at the detection position, and the detection signal of the detection device is An inspection device for clogging between ribs of a disk rotor in which an alarm device to be input is arranged.