JPH09323262A - Blast treatment method and its equipment - Google Patents

Abstract

(57) 【Abstract】 PROBLEM TO BE SOLVED: To use a centrifugal abrasive cleaning material projecting device for projecting abrasive material by rotating an impeller, in a method of blasting abrasive materials of various particle sizes without replacing the abrasive material. The grain size of the abrasive material and the center position of the projection area are changed to desired ones so that the blast treatment can be performed. SOLUTION: The reference particle size of the abrasive material and the center position of the projection area of the abrasive material are obtained in advance, and then the particle diameter of the abrasive material is adjusted according to the processing conditions of the article to be processed. Then, the center position of the abrasive cleaning material projection region is determined based on the correlation between the reference particle size of the abrasive cleaning material and the center position of the projection region of the abrasive cleaning material.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for blasting an object to be treated with abrasive particles of various particle sizes by using a centrifugal abrasive particle projection device for projecting abrasive particles by rotating an impeller, and equipment therefor. Regarding

[0002]

2. Description of the Related Art In order to improve the so-called peening effect and blasting effect on an object to be processed, the abrasive material has a particle size, a projection speed and a projection area which are different depending on the processing conditions. It is desirable to set and project each. Therefore, conventionally, as disclosed in Japanese Patent Laid-Open No. 5-285447, the particle size of the abrasive was changed to 2
It is also practiced to project the blasting material onto the article to be treated for blasting over a plurality of stages.

[0003]

However, in such a conventional blast treatment facility, when the particle size of the abrasive material is to be changed, the abrasive material must be replaced with another particle size. was there. In addition, if it is necessary to change the rotational speed of the impeller or the center position of the projection area of the abrasive cleaning material due to the change of the particle size of the abrasive cleaning material, determine the center position of the projection area of the abrasive cleaning material. Although the center position of the projection area is changed by changing the position of the abrasive cleaning material discharge port of the control cage, in order to determine the position of the abrasive cleaning material discharge port of the control cage, Therefore, many tests must be performed for changes in the projection area due to changes in the abrasive particle size or the projection speed, and after the position of the abrasive outlet of the control cage has been determined, The device had to be disassembled to change the position of the abrasive cleaning material discharge port of the control cage, and then reassembled, which required a lot of time and labor, and caused new problems such as poor productivity. The present invention has been made in view of the above circumstances, and an object thereof is to easily set a desired particle size, a projection speed, and a center position of a projection region of a polishing / cleaning material without replacing the polishing / cleaning material. It is to provide a method that can be changed and blasted, and its equipment.

[0004]

In order to achieve the above object, the blast treatment method in the first invention uses a centrifugal abrasive cleaning material projecting device for projecting abrasive cleaning material by rotation of an impeller, and has various particle sizes. A method of blasting with the abrasive cleaning material, wherein the correlation between the reference particle size of the abrasive cleaning material and the center position of the projection area of the abrasive cleaning material is obtained in advance, and then the processing conditions of the article to be processed Corresponding to, specify the particle size of the abrasive material,
Thus, the center position of the abrasive cleaning material projection area is determined based on the correlation between the reference particle size of the abrasive cleaning material and the center position of the projection area of the abrasive cleaning material.

In order to achieve the above object, the blasting equipment in the second aspect of the invention uses a classifying mechanism for classifying the collected polishing and cleaning material into several particle sizes and the polishing and cleaning material classified by this classification mechanism is almost the same. A plurality of abrasive cleaning material storage tanks for temporarily storing each abrasive particle diameter, and a memory for storing data relating to the correlation between the reference particle diameter of the abrasive cleaning material and the center position of the projection area of the abrasive cleaning material, which is obtained in advance. Means, a control cage operating mechanism for operating a control cage for changing the center position of the abrasive cleaning material projection area in the centrifugal abrasive cleaning material projecting device, the centrifugal abrasive cleaning material projecting device, and the centrifugal abrasive cleaning material projecting device A plurality of opening / closing mechanisms that respectively connect the polishing / cleaning material supply port and the plurality of polishing / cleaning material storage tanks, and each of the plurality of opening / closing mechanisms corresponding to the processing conditions of the article to be processed based on the data of the storage means. Open and close A command signal related to each of these is output to each of them, and the position of the abrasive cleaning material discharge port of the control cage is calculated in accordance with the processing condition of the article to be processed based on the data of the storage means, and the abrasive cleaning of the control cage is performed. Arithmetic means for outputting a command signal relating to the operation rotation amount of the control cage corresponding to the material discharge port position to the control cage operating mechanism.

[0006]

According to the blasting method of the first aspect of the present invention, when the grain size of the abrasive material is selected, first, the abrasive material having the required particle size is applied to the object to be treated at the required projection speed. It is projected while maintaining the center position of the area, and after a lapse of a predetermined time, the abrasive is changed to another particle size and projected while maintaining the center position of the required abrasive projection area on the object to be processed. The Rukoto. According to the blast treatment facility of the second invention, the abrasive cleaning agents stored in the plurality of abrasive cleaning agent storage tanks having mutually different particle sizes are removed from the abrasive cleaning agent projecting device by sequentially opening and closing the plurality of opening / closing mechanisms. As a result, the abrasive material is projected onto the object to be processed while the particle size is successively changed and the center position of the required abrasive material projection area is maintained.

[0007]

Embodiments of the present invention will be described in detail with reference to FIGS. As shown in FIG. 1, on the upper surface of the ceiling of a cabinet 1 that constitutes a polishing / cleaning chamber, a centrifugal polishing / cleaning material projecting device 2, a control cage operating mechanism 3 for operating a control cage, and a rotation speed varying mechanism are provided. And a drive mechanism 4 for rotating the impeller, each of which is installed. The polishing / cleaning material supply port of the polishing / cleaning material projection device 2 has a plurality of discharge ports of the polishing / cleaning material storage tanks 5 for opening / closing a plurality of openings / closings. The communication is connected through the mechanism 6 and the guide tube 7 with a chute. The plurality of abrasive cleaning material storage tanks 5 are mounted in communication with a classifying mechanism 8 disposed above the tanks 5 for classifying the recovered abrasive cleaning agent into several particle sizes, and the classifying mechanism 8 is The polishing / cleaning material recovery device 9 communicating with the lower end of the cabinet 1 is mounted in communication with the upper end thereof.

Further, in the above-mentioned abrasive cleaning material projecting device 2,
As shown in FIGS. 2 and 3, an auxiliary cover 24 having a hole 23 in the center is attached to the outer surface of the right side wall of the cover body 22 surrounding the impeller 21, and the roller bearing 25 is fitted into the hole 23. I am doing it. A short cylindrical body 26 is fitted inside the roller bearing 25, and the cylindrical body 26 is rotatable in a vertical plane. In addition, the right end of the control cage 27 that penetrates the cylindrical body 26 and is inserted into the impeller 21 is fitted and inserted into the cylindrical body 26, and the flange portion 27a of the control cage 27 is hooked on the cylindrical body 26 so as to be detachable. The control cage 27 has a polishing / cleaning material discharge port 27b, and the right end of the control cage 27 is in contact with the left end of the introduction tube 29 via an annular elastic member 28 made of rubber. Control cage 27 and clamping mechanism 3
It is clamped detachably with 0. Then, as shown in FIG. 3, the holding mechanism 30 includes the auxiliary cover 24 via the holding member 31 attached to the right end of the cylindrical body 26.
The support member 32 is attached to the support member 32 and extends in the left-right direction, and the holding bolt 33 is screwed to the support member 32 (see FIG. 2).

Further, as shown in FIG. 3, an annular filling member 34 is attached to the left side of the rolling element 25a in the roller bearing 25, and the filling member 34 is manufactured by solidifying felt or metal fiber. It has a structure and has a certain degree of elasticity, and is supported by being pressed by a liner 35 attached to the left surface of the auxiliary cover 24.

In the figure, 37 is an electric cylinder as the control cage operating mechanism 3 for rotating the cylindrical body 26,
38 is a motor with a reduction gear as a drive mechanism for rotating the impeller 21, and 39 is a cover liner. The control cage 27 is rotated forward and backward through the cylindrical body 26 by the expansion and contraction of the electric cylinder 37.

Further, as shown in FIG. 1, the plurality of opening / closing mechanisms 6, the electric cylinder 37, and the motor 38 with a speed reducer.
A microcomputer 10 is electrically connected to the microcomputer 10. The microcomputer 10 uses a standard particle size of the abrasive cleaning material, a reference rotational speed of the impeller 21, and a center position of a projection area of the abrasive cleaning material, which are obtained in advance. By the function as a storage means for storing data relating to the correlation with, and by specifying the particle size of the abrasive material and the rotation speed of the impeller 21 (projection speed of the abrasive material) according to the processing conditions of the object to be processed. Based on the data of the storage means, a command signal relating to the time for opening and closing each of the plurality of opening / closing mechanisms 6 is issued to the opening / closing mechanism 6 in accordance with the processing conditions of the article to be processed, and the article to be processed based on the data of the storage means. The position of the polishing / cleaning material discharge port 27b of the control cage 27 is calculated in accordance with the processing conditions of the control cage 27, and the control cable corresponding to the position of the polishing / cleaning material discharge port of the control cage 27 is calculated. A command signal according to the operation amount of rotation of 27 and a, a function as a calculating means for issuing the control cage actuating mechanism 3.

Next, using the equipment configured as described above, the processing is carried out under the processing conditions relating to the required particle size of the abrasive cleaning material, the number of revolutions of the impeller 21 (projecting speed of the abrasive cleaning material) and the central position of the abrasive cleaning material projecting area. The procedure for scouring the product will be explained. First, the particle size of the abrasive material to be used, the rotation speed of the impeller 21, and the center position of the projection area of the abrasive material are specified and input to the computer 10. Then, the article to be processed is set in the cabinet 1. Next, when the computer 10 is operated, first, the opening / closing mechanism 6 of the polishing / cleaning material storage tank 5 containing the polishing / cleaning material having a required particle size is opened to project the polishing / cleaning material through the guide tube 7. It is supplied to the device 2, and at the same time, the motor 38 with a speed reducer is driven to rotate the impeller 21 at a required rotation speed.

Further, the computer 10 calculates the position of the abrasive cleaning material discharge port 27b of the control cage 27 so as to obtain the center position of the projection area of the abrasive cleaning material corresponding to the object to be processed. For example, when the rotation amount of the control cage 27 for obtaining the position of the abrasive cleaning material discharge port 27b is an angle γ, the angle γ is the center position of the projection area from the reference state to the target state with respect to the reference particle diameter of the abrasive cleaning material. The rotation angle α of the control cage 27 for obtaining the above is added to the rotation angle β of the control cage 27 for obtaining the center position of the projection basin in the target state from the reference state for the specific projection speed of the abrasive. Obtainable. Based on this calculation result, the electric cylinder 37 is driven to rotate in the normal direction or to rotate in the reverse direction, and the abrasive cleaning material discharge port 27b of the control cage 27 is driven.
The position of will be changed to the desired one.

Thus, the abrasive material having the required particle size is
After projection is performed at a required speed and while maintaining the center position of the projection area for a required predetermined time, the opening / closing mechanism 6 that has been opened is closed, and another abrasive having a different particle size is contained. The opening / closing mechanism 6 of the abrasive cleaning material storage tank is opened, the abrasive cleaning material is supplied to the abrasive cleaning material projecting device 2 through the guide tube 7, and the once processed abrasive is processed with a different particle size. The blasting material is projected and blasted in the same manner as described above. And, if necessary, the opening / closing mechanism 6 is also used for the other polishing agent storage tanks 5.
Is opened and closed, and abrasives having other particle sizes are projected. The projected abrasive cleaning material is recovered by the recovery device 9 and then classified into three particle sizes by the classifier 8 and stored in the three abrasive cleaning material storage tanks 5, respectively.

In the above embodiment, the rotation speed of the impeller 21 is changed to change the projection speed of the polishing / cleaning material. However, if it is not necessary to change the projection speed of the polishing / cleaning material, the first Even if the number of revolutions of the impeller 21 for the second time and the number of revolutions of the impeller 21 for the second time are set to be the same, or even if the number-of-rotations variable mechanism (not shown) of the drive mechanism 4 for rotating the impeller is omitted. Good.

[0016]

As is apparent from the above description, according to the present invention, the correlation between the reference particle diameter of the abrasive and cleaning material and the center position of the projection area of the abrasive and cleaning material is obtained in advance, and thereafter, The particle size of the abrasive cleaning material is specified in accordance with the processing conditions, and thereby the abrasive cleaning material projection is performed based on the correlation between the reference particle size of the abrasive cleaning material and the center position of the projection area of the abrasive cleaning material. Since the center position of the area is determined, it is possible to easily change the grain size of the abrasive material and the center position of the projection area to a desired one without projecting the abrasive material and project the abrasive material. Excellent effect such as possible.

[Brief description of drawings]

FIG. 1 is a schematic front view of an embodiment of the present invention.

FIG. 2 is an enlarged detail view of a portion A in FIG. 1;

3 is a sectional view taken along line BB of FIG.

[Explanation of symbols]

 2 Centrifugal abrasive cleaning material projection device 3 Control cage actuation mechanism 4 Drive mechanism 5 Abrasive cleaning material storage tank 6 Opening / closing mechanism 8 Classification mechanism 10 Computer 21 Impeller

Claims (4)

[Claims] 1. A method of blasting with a polishing agent having various particle diameters by using a centrifugal polishing agent projecting device for projecting the abrasive agent by rotating an impeller. And the center position of the projection area of the abrasive cleaning material are obtained in advance, and then the particle diameter of the abrasive cleaning material is specified in accordance with the processing conditions of the object to be processed. Based on the correlation between the reference particle size of the material and the center position of the projection area of the abrasive cleaning material, the center position of the abrasive cleaning material projection area is determined Blast processing method. 2. A method of blasting abrasives having various particle sizes by using a centrifugal abrasive cleaning material projecting device for projecting abrasives by rotating an impeller. And the reference number of revolutions of the impeller and the correlation between the center position of the projection area of the abrasive cleaning material are obtained in advance, and thereafter, the particle diameter of the abrasive cleaning material and the impeller of the impeller corresponding to the processing conditions of the object to be processed. The number of revolutions is specified, whereby, based on the correlation between the reference particle size of the abrasive cleaning material, the reference number of revolutions of the impeller, and the center position of the projection area of the abrasive cleaning material, the center position of the abrasive cleaning material projection area is determined. A method for blasting with a centrifugal abrasive cleaning material projecting device, characterized in that: 3. A blasting equipment for projecting abrasives having various particle diameters by using a centrifugal abrasive cleaning material projection device for projecting abrasives by rotating an impeller. A classifying mechanism for classifying the material into several particle sizes, a plurality of abrasive cleaning material storage tanks for temporarily storing the abrasive materials classified by this classifying agent at almost the same particle size, and the previously determined abrasive cleaning material Storage means for storing data relating to the correlation between the reference particle size of the polishing agent and the central position of the projection area of the abrasive, and a control for changing the central position of the abrasive projection area in the centrifugal abrasive projection device. A control cage operating mechanism for operating the cage, a centrifugal abrasive cleaning material projecting device, and a plurality of opening / closing devices for respectively connecting the abrasive cleaning material supply port of the centrifugal abrasive cleaning material projecting device and the plurality of abrasive cleaning material storage tanks. Based on the mechanism and the data in the storage means. A command signal relating to the time for opening and closing each of the plurality of opening / closing mechanisms is issued to each of them according to the processing condition of the processed product, and the processing condition of the processed product is processed according to the data of the storage means. Calculating means for calculating the position of the abrasive cleaning agent discharge port of the control cage and outputting a command signal relating to the operation rotation amount of the control cage corresponding to the position of the abrasive cleaning material discharge port of the control cage to the control cage operating mechanism, Blast treatment equipment characterized by being equipped. 4. A blasting device for projecting abrasives having various particle diameters by using a centrifugal abrasive cleaner projection device for projecting abrasives by rotating an impeller. A classifying mechanism for classifying the material into several particle sizes, a plurality of abrasive cleaning material storage tanks for temporarily storing the abrasive materials classified by this classifying agent at almost the same particle size, and the previously determined abrasive cleaning material Storage means for storing data relating to the reference particle diameter, the reference rotation speed of the impeller, and the center position of the projection area of the abrasive cleaning material, and the abrasive cleaning material projection area in the centrifugal abrasive cleaning material projection device. The control cage actuating mechanism that operates the control cage that changes the center position of the machine, the centrifugal polishing agent projection device equipped with the drive mechanism for the impeller rotation drive with the variable rotation speed mechanism, and the Cleaning material supply port and the above-mentioned multiple cleaning A plurality of opening / closing mechanisms that respectively connect the material storage tanks, and a command signal related to the time for opening / closing each of the plurality of opening / closing mechanisms corresponding to the processing conditions of the processed product based on the data of the storage means And, based on the data of the storage means, the position of the abrasive cleaning material discharge port of the control cage is calculated in accordance with the processing condition of the article to be processed, and the control cage of the control cage corresponding to the position of the abrasive cleaning material discharge port of the control cage is calculated. A blast treatment facility, comprising: a calculation unit that outputs a command signal related to an operation rotation amount to the control cage operation mechanism.