JP2002096034A - Air blow device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air blow device which is capable of efficiently supplying supercharged air into a through-hole or blind hole without the diffusion of the supercharged air when expelling chips from a workpiece having the hole described above by air blow. SOLUTION: This air blow device has a stroke nozzle 23 for the blind hole which strokes in the ejection direction of the supercharged air supplied from an air source and supplies the supercharged air to the blind hole 7, an air ejection part 33c which is disposed at the pointed end of the stroke nozzle 23 for the blind hole and a cylinder 22 which houses the stroke nozzle 23 for the blind hole and comes into sliding contact therewith in a stroking direction. The pipe diameter of the stroke nozzle 23 for the blind hole is made smaller than at least the hole diameter of the blind hole 7. The air ejection part 23c of the stroke nozzle 23 for the blind hole is inserted to the side inner than the end face of the aperture of the blind hole 7 by stroking of the stroke nozzle 23 for the blind hole and a spacing 7a to expel the chips, etc., is formed between the stroke nozzle 23 for the blind hole and the diametral direction of the blind hole 7.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air blow device for removing chips and the like from a workpiece, and more particularly to a structure of an air nozzle for jetting supercharged air.

[0002]

2. Description of the Related Art Conventionally, chips and the like are removed from a workpiece by blowing supercharged air. In particular, in an oil pump cover configured in an automatic transmission, a circuit for supplying oil from inside a control valve of the automatic transmission to a shaft oil passage through a plurality of oil passages configured in the oil pump cover. And a part of a circuit for supplying the oil pressure generated by the oil pump to the control valve. The oil passage of the oil pump cover has a plurality of bottomed holes and through holes. Therefore, in the step of manufacturing the oil pump cover, after forming the oil passages, which are the bottomed holes and the through holes, cutting air and the like are eliminated by blowing supercharged air to the openings of the respective oil passages. FIGS. 5 and 6 show a conventional air nozzle, and are schematic views showing swarf removal by blowing supercharged air from an opening of an oil passage.

[0003]

However, in the above-mentioned prior art, as shown in FIGS. 5 and 6, the supercharged air is injected from the outside of the opening of the oil passage, so Part of the supply air flows to the outer peripheral side of the opening, and it has been difficult to efficiently supply the supercharged air into the oil passage.
Further, an air curtain is formed by the supercharged air flowing to the outer periphery of the opening. Therefore, even if chips or the like are discharged to the outside from the opening, there is a problem that the air curtain hinders the discharge of chips and the chips cannot be removed efficiently. In the case of a through-hole, the supercharged air introduced from the opening is discharged from the opposite opening through the through-hole. There was a problem that can not be secured.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems. When removing chips or the like from a workpiece having a through hole or a bottomed hole by air blow, the supercharged air is diffused. It is an object of the present invention to provide an air blow device capable of efficiently supplying supercharged air into a hole without using it.

[0005]

According to the first aspect of the present invention, there is provided an air source for supplying supercharging air, a workpiece having a screw-shaped or bag-shaped bottomed hole, and a supply from the air source. And a stroke nozzle for a bottomed hole that supplies a supercharged air to the bottomed screw hole or the bottomed hole while providing a stroke in the ejection direction of the supercharged air. In an air blow device including an air ejection portion and a cylinder that accommodates the bottomed hole stroke nozzle and slides in the stroke direction, the pipe diameter of the bottomed hole stroke nozzle is at least the diameter of the bottomed hole. When the stroke of the bottomed hole stroke nozzle makes a stroke, the air ejection portion is inserted inside the opening end face of the bottomed screw hole or the bottomed hole, and Wherein a hole for stroke nozzle between the bottomed screw hole or a bottomed perforated in the radial direction, and characterized by forming a clearance to eliminate swarf and the like.

According to the second aspect of the present invention, an air source for supplying supercharging air, a workpiece having a through-hole formed therein, and a stroke in a direction in which the supercharging air supplied from the air source is ejected, and A through-hole stroke nozzle for supplying air to the through-hole, an air ejection section provided at the tip of the through-hole stroke nozzle, and a cylinder that accommodates the through-hole stroke nozzle and slides in the stroke direction. And the pipe diameter of the through-hole stroke nozzle is made larger than at least the hole diameter of the through-hole, and the outer periphery of the tip end of the through-hole stroke nozzle is provided to the air ejection portion. The diameter of the through-hole is tapered so that the diameter of the through-hole becomes smaller than the diameter of the through-hole. The ejection unit is inserted inside the opening end face of the through hole, characterized by fitting the opening of the through hole and the tapered portion.

According to a third aspect of the present invention, in the air blow device according to the first or second aspect, the air inlet of the stroke nozzle for the bottomed hole or the through hole is provided with:
The pressure member of the supercharged air is formed, and at the same time, an introduction port taper portion serving as a stroke stopper is formed, and an elastic member for biasing the bottomed hole or through hole stroke nozzle to an initial position is provided in the cylinder. Features.

According to a fourth aspect of the present invention, in the air blow device according to any one of the first to third aspects, the workpiece is formed by:
An oil pump cover having the bottomed hole or the through hole formed in the automatic transmission, a rotatable installation table for installing the oil pump cover, and a bottomed hole and a through hole formed in the oil pump cover. A stopper for determining the position of the bottomed hole and the installation table, wherein the installation base is rotated with the oil pump cover installed, and the bottomed hole stroke nozzle is located at the position of the bottomed hole and the through hole determined by the stopper. And a stroke nozzle for the through hole is provided.

[0009]

According to the first aspect of the present invention, the stroke nozzle strokes into the bottomed hole, and the air ejection portion of the stroke nozzle is inserted inside the end face of the opening of the bottomed hole. Thus, the supercharged air can be reliably supplied into the bottomed hole without part of the jetted supercharged air flowing to the outer peripheral side of the opening. Also, when the stroke nozzle is inserted into the bottomed hole, a gap is formed between the stroke nozzle and the bottomed hole in the radial direction. Can be well excluded.

[0010] In the air blow device according to the second aspect, the outer periphery of the distal end portion of the stroke nozzle is tapered toward the air ejection portion so as to have a diameter smaller than at least the diameter of the through hole. When the stroke nozzle strokes, the air ejection portion is inserted inside the end surface of the opening of the through hole, so that part of the ejected supercharged air does not flow to the outer periphery of the opening. The supercharged air can be supplied into the through hole. In addition, by fitting the tapered portion and the opening of the through hole, it becomes possible to reliably flow the supercharged air to the opening on the opposite side of the through hole,
Chips and the like can be reliably removed from the opening on the opposite side.

In the air blow device according to the third aspect of the invention, the pressure of the supercharging air is obtained in the stroke nozzle and the introduction port tapered portion serving as a stroke stopper is formed, so that the stroke is automatically increased when the supercharging air is introduced. The nozzle can stroke. In addition, the elastic member that urges the stroke nozzle to the initial position is provided, so that after the stroke nozzle strokes into the bottomed hole or through-hole, the introduction of supercharged air is automatically stopped by the elastic force of the elastic member. Then, the stroke nozzle is housed in the cylinder. Therefore, when installing or removing a workpiece with respect to the air blow device of the present invention, since the stroke nozzle is not inserted into the bottomed hole or the through hole, it can be easily installed or removed.

In the air blow device according to the fourth aspect, the workpiece is an oil pump cover having a bottomed hole or a through hole formed in the automatic transmission. A rotatable installation base for installing the oil pump cover, and a stopper for determining a position where the bottomed hole and the through hole are formed in the oil pump cover, wherein the installation base is provided with the oil pump cover The bottomed hole stroke nozzle and the through hole stroke nozzle are arranged at the positions of the bottomed hole and the through hole determined by the stopper. That is, since the oil pump cover has a plurality of bottomed holes and through holes to function as a part of the hydraulic circuit of the automatic transmission, it is necessary to eliminate chips and the like by air blow for each hole. Must be done,
As described above, air blow can be performed on each hole at the same time, and the manufacturing process can be simplified. Further, in the bottomed hole stroke nozzle of the present invention, it is necessary to be inserted into the bottomed hole and to secure a gap. Further, in the through-hole stroke nozzle of the present invention, since it is necessary to be inserted into the through-hole and fitted to the opening, the relationship between the stroke nozzle and the hole position is very important. The table is pivotable,
Since the hole can be easily positioned by the stopper, the oil pump cover can be easily installed on the installation base.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram illustrating a cross section of the air blow device according to the embodiment. Reference numeral 10 denotes an oil pump cover. Above the oil pump cover 10, the oil pump cover 10 is rotatably supported around an axis, and an end of a bearing 4 through which an engine output shaft and a transmission input shaft penetrate. There is provided a first blowing device 70 for blowing press-in chips, cutting chips, and the like around the bush 1 fitted in the bush 1. Below the oil pump cover 10, the oil pump cover 10 is rotatably supported around an axis, and a press-fitting swarf, a swarf, and the like around the bush 2 fitted to the lower end of the bearing 4 are blown. A two-blow device 80 is provided.

A lower surface rotatably supported by a bearing 63 on the outer periphery of the second blow device 80 and rotating and blowing with respect to the oil pump component 3 corresponding to the lower surface of the oil pump cover 10 in the figure. A blowing device 60 is provided. The lower surface blowing device 60 includes an air introduction port 64 for introducing supercharged air, an air ejection portion 61 provided in a plurality of circumferences and ejecting supercharged air to the oil pump component 3, and an air ejection portion 61. A windmill 62 is provided for converting the air injection output of 61 into a rotational driving force.

FIG. 2 is a top view when the oil pump cover is installed in the air blow device of the embodiment. A radially outer periphery of the oil pump cover 10 is provided with a bottomed hole blowing device 20 for blowing the bottomed hole 7 and a through hole blowing device 30 for blowing the through hole 6.
A first stopper 40 and a second stopper 5 for positioning the bottomed hole 7 and the through hole 6 of the oil pump cover 10 are provided.
0 is arranged. The first stopper 40 includes a piston 42 that is stroked by the supercharged air,
2 and a cap 41 which is in contact with the contact part 5 of the oil pump cover 10.

FIG. 3 is a schematic view showing a bottomed hole blowing device. The bottomed hole blow device 20 includes a joint bracket 21 for introducing supercharged air from an air source, a nozzle cylinder 22 for accommodating a bottomed hole stroke nozzle 23, and a bottomed hole stroke nozzle 23 in an initial position. It is constituted by a return spring 24 that is biased. In addition, the bottomed-hole stroke nozzle 23 has an inlet taper portion 23a that obtains the pressing force of the supercharging air and serves as a stroke stopper.
Are formed. Stroke nozzle 23 for bottomed hole by supercharged air introduced from joint bracket 21
Strokes and is inserted into the bottomed hole 7. At this time,
Gap 7 between bottomed hole 7 and bottomed hole stroke nozzle 23
Since a is secured, chips and the like blown by the supercharging air are removed from the gap 7a.

FIG. 4 is a schematic view showing a through-hole blowing device. Since the through-hole blow device 30 has basically the same configuration as the bottomed-hole blow device 20, only different points will be described. Tapered section 3 for through-hole stroke nozzle 33
3b is formed. The tapered portion 33b is formed such that the portion of the air ejection portion 33c is smaller than the diameter of the through hole 6, and when the stroke nozzle 33 for the through hole is stroked by the supercharged air introduced from the joint bracket 31, the stroke nozzle for the through hole is formed. The air ejection portion 33c of the tapered portion 33b formed at the distal end of the through hole 33 is inserted into the through hole 6, and the tapered surface of the tapered portion 33b is inserted into the through hole 6.
Into the opening. As a result, chips are removed from the opening of the through hole 6 opposite to the opening where the supercharged air is introduced. At this time, since the tapered surface and the opening are fitted, the supercharged air can be introduced into the through hole 6 without diffusing.

Next, the operation will be described. When the oil pump cover 10 is installed in the air blow device, the first contact portion 5 of the oil pump cover 10 is pushed by the cap 41 by the stroke of the piston 42 of the first stopper 40 due to the introduction of the supercharged air. The pump cover 10 is rotated. And when it rotates to a predetermined position, the position is determined by the second stopper 50 and the second contact part 8 of the oil pump cover 10 contacting.

Next, the stroke nozzles 23 and 33 of the bottomed hole blow device 20 and the through hole blow device 30 are stroked to blow the inside of the hole, and at the same time, the first blow device 70 is blown.
Accordingly, the fitting portion between the bush 1 and the bearing 4 is blown, and the fitting portion between the bush 2 and the bearing 4 is blown by the second blowing device 80.

The lower surface blowing device 60 blows the oil pump component 3 while rotating. At this time, the above-described bottomed hole blow device 20, through-hole blow device 30, lower surface blow device 60, first blow device 70, second blow device 8
Chips and the like removed by blowing 0 are sucked from the vacuum port 81.

As described above, in the air blow device of the present embodiment, the stroke nozzle 23 for the bottomed hole is used.
Strokes into the bottomed hole 7, and the air ejection portion is inserted inside the end face of the opening of the bottomed hole 7, so that a part of the ejected supercharged air is opened as shown in FIG. The supercharged air can be reliably supplied into the bottomed hole without flowing to the outer peripheral side of the portion. In addition, stroke nozzle 23 for bottomed hole
Is inserted into the bottomed hole 7, and a gap 7a is formed between the bottomed hole stroke nozzle 23 and the bottomed hole 7 in the radial direction. Can be efficiently removed from the gap 7a.

Further, the outer periphery of the tip end of the through-hole stroke nozzle 33 is tapered so as to have a diameter smaller than at least the diameter of the through-hole 6 toward the air ejection portion 33c. The stroke of the through-hole stroke nozzle 33 causes the air ejection portion 33c to be inserted inside the end face of the opening of the through-hole 6, thereby causing a part of the supercharged air to be ejected as shown in FIG. The supercharged air can be reliably supplied into the through hole 6 without flowing to the outer peripheral side of the opening. Further, by fitting the tapered portion 33b and the opening of the through hole 6, the supercharged air can be further reliably flowed to the opening on the opposite side of the through hole 6, and chips and the like can be removed from the opening on the opposite side. Can be reliably excluded from the part.

Further, the pressure nozzles 23 and 33 for the bottomed holes and the through holes are provided with the pressure of the supercharging air and the tapered inlet ports 23a and 33a serving as the stroke stoppers are formed. At the time of introduction, the stroke nozzles 23 and 33 can automatically stroke. Further, the return springs 24 and 34 for urging the stroke nozzles 23 and 33 to the initial position are provided, so that the supercharged air is introduced after the stroke nozzles 23 and 33 stroke into the bottomed hole 7 or the through hole 6. When stopped, the stroke nozzles 23 and 33 are automatically housed in the nozzle cylinder 22 by the elastic force of the return springs 24 and 34. Therefore, when installing or removing the oil pump cover 10 with respect to the air blow device, since the stroke nozzles 23 and 33 are not inserted into the bottomed holes 7 or the through holes 6, the installation and removal can be easily performed.

The oil pump cover 10 has a plurality of bottomed holes and through holes in order to function as a part of a hydraulic circuit of the automatic transmission. However, as described above, it is possible to perform air blowing on each of the holes at the same time, thereby simplifying the manufacturing process. In addition, since the installation table is rotatable and the holes can be easily positioned by the first stopper 40 and the second stopper 50, the oil pump cover 10 can be easily installed on the installation table.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of an air blow device according to an embodiment.

FIG. 2 is a top view of the air blow device according to the embodiment.

FIG. 3 is a cross-sectional view of the bottomed hole blowing device according to the embodiment.

FIG. 4 is a cross-sectional view of the through-hole blowing device according to the embodiment.

FIG. 5 is a cross-sectional view of a through-hole blowing device according to the related art.

FIG. 6 is a cross-sectional view of a bottomed-hole blower according to the related art.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bush 2 Bush 3 Oil pump constituent part 4 Bearing 5 Contact part 6 Through-hole 7 Bottom hole 7a Gap 8 Second contact part 10 Oil pump cover 20 Bottom hole blow device 21 Joint bracket 22 Nozzle cylinder 22 Bottom hole Stroke nozzle 23 for bottomed hole stroke nozzle 23a inlet taper portion 23c air ejection portion 24 return spring 30 through-hole blow device 31 joint bracket 33 through-hole stroke nozzle 33b taper portion 33c air ejection portion 40 first stopper 41 cap 42 Piston 50 Second stopper 60 Bottom blow device 61 Air ejection part 62 Windmill 63 Bearing 64 Air inlet 70 Blow device 80 Blow device 81 Vacuum port

Claims (4)

[Claims] An air source for supplying supercharged air, a workpiece having a screw-shaped or bag-shaped bottomed hole, a stroke in a direction in which the supercharged air supplied from the air source is ejected, A bottomed-hole stroke nozzle for supplying supercharged air to the bottomed screw hole or the bottomed hole, an air ejection portion provided at the tip of the bottomed-hole stroke nozzle, and the bottomed-hole stroke nozzle. An air blow device comprising: a cylinder that is accommodated and slides in a stroke direction; and wherein a pipe diameter of the bottomed hole stroke nozzle is smaller than at least a hole diameter of the bottomed hole, By inserting a stroke, the air ejection portion is inserted inside the end face of the opening with the bottomed screw hole or the bottomed hole, and the stroke nozzle for the bottomed hole and the bottomed screw hole are inserted. An air blow device characterized in that a gap for removing chips and the like is formed in the radial direction of the bottomed hole. 2. An air source for supplying supercharging air, a workpiece having a through hole, and a stroke in a direction in which the supercharging air supplied from the air source is ejected, and the supercharging air is supplied to the through hole. An air blower comprising: a stroke nozzle for a through-hole to be supplied to a nozzle; an air ejection portion provided at the tip of the stroke nozzle for a through-hole; and a cylinder that accommodates the stroke nozzle for the through-hole and slides in the stroke direction. In the apparatus, the pipe diameter of the through-hole stroke nozzle is made larger than at least the hole diameter of the through-hole, and the outer periphery of the tip of the through-hole stroke nozzle is at least the through-hole facing the air ejection portion. The diameter of the hole is smaller than the diameter of the hole, and the stroke nozzle for the through-hole is stroked, so that the air ejection portion is An air blow device, wherein the air blow device is inserted inside the end face of the opening and the tapered portion and the opening of the through hole are fitted. 3. The air blow device according to claim 1, wherein a pressure of supercharged air is obtained and a stroke stopper is provided at an air introduction port of the stroke nozzle for the bottomed hole or the through hole. An air blow device having a tapered mouth portion and an elastic member provided in the cylinder to urge the bottomed hole or through hole stroke nozzle to an initial position. 4. The air blow device according to claim 1, wherein the workpiece is an oil pump cover configured in an automatic transmission and having the bottomed hole or the through hole, and the oil pump cover is installed. A rotatable mounting table, a stopper for determining a position where the bottomed hole and the through hole of the oil pump cover are formed, and the mounting table is rotated with the oil pump cover installed, and the stopper The stroke nozzle for bottomed holes and the stroke nozzle for through holes are arranged at the positions of the bottomed holes and the through holes determined by the following formula.