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1. 发明专利

JPH11333382A CLASSIFYING METHOD FOR GRANULAR BODY 失效
公开(公告)号：JPH11333382A
公开(公告)日：1999-12-07
申请号：JP14451098
申请日：1998-05-26
申请人： SINTOKOGIO LTD
发明人： KATO HITOSHI , OTA KUNIO , ROKUTANDA HITOSHI , SUZUKI HIROAKI
IPC分类号： B07B13/11 , B07B13/14
摘要： PROBLEM TO BE SOLVED: To improve classifying performance by classifying about the particle diameter of a granular body and the spherical degree of the granular body using the difference of the coefficient of friction between the granular body and a slope in the case of classifying the metallic or non-metallic granular body by rotating a disk having a conical slope in a horizontal plain. SOLUTION: In the case of classifying the granular body by rotating the disk having conical slope in the horizontal plain, the friction force by the friction coefficient of the granular body sliding on the slope is generated in the direction reverse to the sliding direction and then, the change of the falling position of the granular body is selected large by setting the angle of the slope, the diameter of the disk, rotation speed of the disk or the like. When the particle diameter of the granular body is =200 μm, the angle of the slope is setted to 10-30 deg. and the number of revolution of the disk is setted to 15-120 rpm. The change of the falling position of the granular body to be classified is increased by this way.

2. 发明专利

JPH11138442A MIXING DEVICE OF GAS AND LIQUID 失效
公开(公告)号：JPH11138442A
公开(公告)日：1999-05-25
申请号：JP31626697
申请日：1997-10-31
申请人： SINTOKOGIO LTD
发明人： ROKUTANDA HITOSHI , MORIMOTO HIDEKI , SUZUKI HIROAKI
IPC分类号： B08B7/04 , B01F3/04 , B01F5/04 , B24C5/02
摘要： PROBLEM TO BE SOLVED: To provide a device capable of efficiently mixing compressed air and pressurized liquid and injecting them from a nozzle without generating pulsation of the mixture. SOLUTION: A mixing device 3 for gas and liquid is provided with an outer cylindrical member 16 formed into a cylindrical shape, provided with a taper part 12 formed on the downstream side as seen from the flow direction of mixture, and provided with a supplying port 13 to be communicated with a processing liquid storage tank on the upstream side from the taper part 12, and an inner cylindrical member 17 formed into a cylindrical shape, to be approximately concentrically inserted in the outer cylindrical member 16, provided with the tip capable of being adjusted in advancing and retreating in relation to the inner surface of the taper part 12 of the outer cylindrical member 16, provided with a cylindrical, hollow chamber to be communicated with the supplying port 13, capable of being sectioned by the outer cylindrical member 16, and provided with the base end to be communicated with a compressed air source.

3. 发明专利

JPH11630A WASHING METHOD AND APPARATUS THEREFOR 失效
公开(公告)号：JPH11630A
公开(公告)日：1999-01-06
申请号：JP17320097
申请日：1997-06-13
申请人： SINTOKOGIO LTD
发明人： ROKUTANDA HITOSHI , MORIMOTO HIDEKI
IPC分类号： B08B5/02
摘要： PROBLEM TO BE SOLVED: To provide a washing method and an apparatus for the method by which the motive force for spraying a washing liquid is saved and the collision force of the sprayed washing liquid is stabilized and kept near the maximum peak at the time when the washing liquid is sprayed out of a nozzle and carried by air flow of compressed air. SOLUTION: In this washing method, the pressure of compressed air and the pressure of a washing liquid to be pressurized are controlled to be 0.03-1.0 MPa, respectively, and the mixing ratio of the compressed air and the washing liquid to be pressurized by volume is controlled to be 30-100 of air amount calculated from conversion of the compressed air to air in non-compressed state to 1 of the washing liquid amount and further, the collision force of the mixture sprayed out of a nozzle is kept near the maximum value by detecting the pressure of the mixture in the nozzle.

4. 发明专利

JPH10118932A OPERATION CONTROL METHOD OF ROTARY MECHANISM IN SHOT BLAST EQUIPMENT AND DEVICE THEREFOR 失效
公开(公告)号：JPH10118932A
公开(公告)日：1998-05-12
申请号：JP29744696
申请日：1996-10-18
申请人： SINTOKOGIO LTD
发明人： ROKUTANDA HITOSHI , SUZUKI HIROAKI
IPC分类号： B24C3/00
摘要： PROBLEM TO BE SOLVED: To detect abnormality of shot blast equipment without performing a periodic inspection by comparing it with a prescribed value by observing a condition of a rotary mechanism, and judging that the rotary mechanism is abnormal when a measured value is larger than the prescribed value. SOLUTION: A centrifugal projector 2 of an abrasive grain is composed of an impeller rotatably arranged in a cover 3, a rotary mechanism 4 having a rotary shaft to support the impeller and a motor 5. A vibration indicator and a thermometer to observe a condition are installed in the rotary mechanism 4. A microcomputer is built in a cathode ray tube 8, and a preobtained prescribed value is stored. This prescribed value is when excitation force by vibration of the rotary mechanism 4 is not less than about 1.25 G or a temperature is not less than a room temperature of (+) about 50 deg.C or both conditions are satisfied. The fact that a measured value increases to the prescribed value or more can be judged by being observed by the cathode-ray tube 8 or by an alarm from an alarm nunit 10. Afterwards, driving of the motor 5 is stopped by a condition.

5. 发明专利

JPH10118930A SHOT PEENING METHOD OF SPRING AND SPRING PRODUCT 失效
公开(公告)号：JPH10118930A
公开(公告)日：1998-05-12
申请号：JP29758996
申请日：1996-10-19
申请人： SINTOKOGIO LTD , TOGO SEISAKUSHO KK
发明人： ROKUTANDA HITOSHI , NAGASHIMA ETSUICHI , TAKEDA HITOSHI , ISHIKAWA YUJI , IZAWA YOSHINOBU
IPC分类号： B24C1/10 , B24C11/00 , F16F1/02
摘要： PROBLEM TO BE SOLVED: To provide a suitable method to enhance fatigue strength and the service life of a spring by constituting the method of a process to perform peening on a surface of a steel spring by a steel shot on which a grain size diameter of a projection material is a specific value and a process to perform peening by a shot on which specific gravity, a grain diameter and hardness of the projection material are respectively a specific value. SOLUTION: In a projection material of a first stage among shot peening of two stages, a grain size diameter is set to 0.5 to 1.0mm from a demand for the fatigue service life, After this peening process, a projection material of a second stage generates residual compressive stress on the outermost surface of a spring, and a grain diameter is set to 0.05 to 0.2mm from a demand for the fatigue service life. In order to impart sufficient projection energy to a metallic surface, specific gravity is set to 12 to 16. Hardness of the projection material is also set to 1200 to 1600 HV. A surface is quickly fined by shot peening of this two-stage method, and the peak of maximum compressive stress is generated on the outermost surface, and it becomes a suitable method to enhance fatigue strength and the service life.

6. 发明专利

JPH09323262A BLAST TREATMENT METHOD AND ITS FACILITY 失效
公开(公告)号：JPH09323262A
公开(公告)日：1997-12-16
申请号：JP16064896
申请日：1996-05-31
申请人： SINTOKOGIO LTD
发明人： ROKUTANDA HITOSHI , SUZUKI HIROAKI
IPC分类号： B24C3/04
摘要： PROBLEM TO BE SOLVED: To change a particle diameter of a blast cleaning material and a central position of a projection region to desired particle diameter and position easily without changing the blast cleaning material to project the blast cleaning material by determining the central position of the blast cleaning material projection region based on the relative relation of a reference particle diameter of the blast cleaning material and the central position of the projection region. SOLUTION: The relative relation of a reference particle diameter of a blast cleaning material and a central position of a projection region is determined in advance. First, a particle diameter of a blast cleaning material to be used and a central position of a projection region are specified and input in a computer 10, and a product to be treated is set in a cabinet 1. Next, the computer 10 changes discharge port position of the blast cleaning material to a desired position based on the result s of calculation of the projection region of the blast cleaning material which corresponds to the product to be treated to project the blast cleaning material having required particle diameter for required time by maintaining the central position of the projection region at required speed. After that, an open and close mechanism 6 is closed, an open and close mechanism 6 of another storage tank in which blast cleaning material having another required particle diameter is put is opened to supply the material to a blast cleaning material projection device 2, and the material is projected in the same way for blast cleaning.

7. 发明专利

JPH09150369A ABRASIVE GRAIN CENTRIFUGALLY PROJECTING DEVICE 失效
公开(公告)号：JPH09150369A
公开(公告)日：1997-06-10
申请号：JP32959095
申请日：1995-11-24
申请人： SINTOKOGIO LTD
发明人： ROKUTANDA HITOSHI , SUZUKI HIROAKI
IPC分类号： B24C5/06
摘要： PROBLEM TO BE SOLVED: To reduce energy consumption so as to improve projecting efficiency by specifying a value for a clearance between the inside face of a control gauge and the outside face of a distributor. SOLUTION: A rotary shaft extending in the lateral direction is arranged via a bearing unit freely rotationally, while a rotor is fitted on the left side of the rotary shaft. An impeller is fitted on the left side surface of the rotary shaft. A distributor 7 is installed in the inside of a space 12 in the rotor substantially concentrically with the impeller 4, and a cover surrounding the impeller 4 is fixed on the left side of a rotary shaft unit. Between the inside base end part of a blade 6 and the distributor 7, a control gauge 9 installed in the cover is arranged, while a clearance between the inside face of the control gauge 9 and the outside face of the distributor 7 is set to 7-14mm. In this way, energy consumption is reduced and projection efficiency can be improved.

8. 发明专利

JPH09141554A DESCALING METHOD 失效
公开(公告)号：JPH09141554A
公开(公告)日：1997-06-03
申请号：JP32364995
申请日：1995-11-17
申请人： SINTOKOGIO LTD , TOSHIBA TUNGALOY CO LTD
发明人： ROKUTANDA HITOSHI , TAKEDA HITOSHI , OKUBO MASAKAZU , SADAHIRO TAKESHI
IPC分类号： B24C1/00 , B24C11/00
摘要： PROBLEM TO BE SOLVED: To reduce the amount of wear of those consumable parts such as injection material and the liners and impeller blades inside the injection chamber of an injection device by accelerating the injection material of a specific gravity to a prescribed speed and removing oxidized scales adhered to the surface of a part to be treated. SOLUTION: The specific gravity of injection material is 11 to 20. When it is less than 11, a sufficient descaling effect cannot be obtained, and when it exceeds 20, it will be difficult to obtain a material with a strength suitable for injection material. The injection speed of the injection material should be desirably 10 to 40m/sec. However it is more desirable to be 15 to 35m/sec. If the injection speed is less than 10m/sec., a sufficient descaling cannot be performed, and if it exceeds 40m/sec., the surface roughness of a part to be treated will become too large and the service life of the injection material will be shortened.

9. 发明专利

JPH09136262A SHOT BLASTING METHOD AND EQUIPMENT THEREOF 失效
公开(公告)号：JPH09136262A
公开(公告)日：1997-05-27
申请号：JP31715395
申请日：1995-11-10
申请人： SINTOKOGIO LTD
发明人： ROKUTANDA HITOSHI , SHIBATA MASANORI , MIYASHITA TETSUYA
IPC分类号： B24C3/18 , B22D29/00
摘要： PROBLEM TO BE SOLVED: To quickly remove cores of a casting by stopping the rotation of the casting temporarily when thrown shots convergently strike the cores. SOLUTION: When a door 2a is closed to drive a shot-throwing device 1 to throw shots toward a casting, a motor of clamping device 5 is driven for necessary time by a command for driving from a controller 26 based on the discriminated results of a bar code discriminating sensor 4 under the management of a rotary encoder, and thus a casting W is rotated by a required angle through a connecting member, a body of rotation. Then, when the thrown shots convergently strike cores, the rotational driving of the motor is temporarily stopped for necessary time to stop the rotation of the casting W held by a holding member for necessary time, and thus the thrown shots efficiently strike the cores in the casting W.

10. 发明专利

JPH0947967A METHOD FOR DECIDING OPTIMUM INJECTION STRENGTH OF AIR BLAST AND METHOD FOR CONTROLLING INJECTION OF AIR BLAST 失效
公开(公告)号：JPH0947967A
公开(公告)日：1997-02-18
申请号：JP21950795
申请日：1995-08-04
申请人： SINTOKOGIO LTD
发明人： ROKUTANDA HITOSHI , AMANO HIRONOBU
IPC分类号： B24C5/02 , B24C7/00
摘要： PROBLEM TO BE SOLVED: To facilitate decision of the optimum injection strength of air blast by a method wherein an injection strength measuring process and a memory process are effected a plurality of times in such a way that a mixture ratio between a projection material and compressed air is changed by the valve opening/closing driving means of a mixing valve. SOLUTION: Actual injection is effected for seconds by a given compressed air pressure and an injection strength is measured by an injection strength measuring means 9. The position of a valve opening/closing driving means 5 and an injection strength corresponding thereto are stored at a memory device M. A compressed air pressure is then kept at a constant value, the valve opening closing driving means 5 is moved, and by changing a mixture ratio between an injection material and compressed air, the mixture is injected for seconds and an injection strength is measured and stored. A process wherein the valve opening/closing driving means 5 is moved as described above is performed at least three times, and the position, where an optimum injection strength strength corresponding to a compressd air pressure is outputted, of the valve opening closing driving means 5 is decided.

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