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1. 发明专利

JPS58110137A SPINNING METHOD 失效
公开(公告)号：JPS58110137A
公开(公告)日：1983-06-30
申请号：JP21535181
申请日：1981-12-24
申请人： TOKYO SHIBAURA ELECTRIC CO
发明人： ARAKI JINICHIROU
IPC分类号： B21D22/16
摘要： PURPOSE:To prevent torsion of a blank tube and to obtain a highly accurate cylindrical body by chucking the blank tube fitted to a mandrel and spinning the mandrel and the blank tube while rotating them at different speeds. CONSTITUTION:The blank tube 12 which is an object to be worked is fitted to the leading end part of the mandrel 11 and one end part of the blank tube 12 is chucked by a blank tube chuck 13 concentrically rotating the mandrel 11. The mandrel 11 and the chuck 11 are rotated by a driving means or differential means which are prepared independently each other. Plural rollers 14 are arranged on the external periphery of the mandrel 11 at equal intervals in the peripheral direction and these rollers rotate in the reverse direction against the mandrel 11 and also move in the axial direction of the mandrel 11 to iron the mandrel 11. Since the blank tube 12 rotates at a higher speed than the mandrel 11, the torsion of the blank tube 12 is compensated.

2. 发明专利

JPS58107224A METHOD FOR SPINNING THIN NOZZLE 失效
公开(公告)号：JPS58107224A
公开(公告)日：1983-06-25
申请号：JP20667481
申请日：1981-12-21
申请人： TOKYO SHIBAURA ELECTRIC CO
发明人： ARAKI JINICHIROU
IPC分类号： B21D22/16 , B41J2/135
摘要： PURPOSE:To form a nozzle that becomes thinner toward the tip easily and at high accuracy by forming a stepped part that becomes thinner successively toward the tip on a blank pipe and smoothing the stepped part continuously in axial direction. CONSTITUTION:Ironing is made by pressing rollers 8 against the blank pipe 4 while rotating the pipe 4 and a mandrel 6. Spinning is performed up to a point (a) to thin the pipe. Then, the pipe is further thinned from (a) to (b). Similarly, spinning is performed to thin up to (c) and then up to (d) successively, and a stepped part 9 is formed. Then, the stepped part 9 of the pipe 4 is pressed by rolls 8 changing the drubt continuously in axial direction. The drubt is increased gradually toward the tip, and the stepped part 9 is finished smoothly to form a thin nozzle 10.

3. 发明专利

JPS5835025A FORMING METHOD BY SPINNING 失效
公开(公告)号：JPS5835025A
公开(公告)日：1983-03-01
申请号：JP13215181
申请日：1981-08-25
申请人： TOKYO SHIBAURA ELECTRIC CO
发明人： ARAKI JINICHIROU
IPC分类号： B21D22/16
摘要： PURPOSE:To manufacture a high-precision thin tube body with uniform thickness in a spinning forming method, by detecting the deviated thickness pattern of a tube body to be worked from a working force applied to a working roller, and thus controlling the torque of a roller driving motor. CONSTITUTION:A thick cylindrical workpiece 2 is rotated by being fitted to a mandrel 1, and while a motor 5 is rotated,it is allowed to abut on the work piece 2 from one end to start spinning formation. At this time, the pattern output of a load cell 13 which detects a working force applied to the roller 4 due to variation in the thickness of the workpiece 2 is supplied to an arithmetic device 14 and processed according to a preset arithmetic program to supply the output to a torque controller 15. On the basis of this input, the torque of the motor 5 is controlled to regulate the draft of the roller 4, thus obtaining a thin tube body 7 which is free of deviated thickness and has uniform thickness.

4. 发明专利

JPS5677118A MOLDING OF CYLINDER 失效
公开(公告)号：JPS5677118A
公开(公告)日：1981-06-25
申请号：JP15361579
申请日：1979-11-29
申请人： TOKYO SHIBAURA ELECTRIC CO
发明人： ARAKI JINICHIROU
IPC分类号： B29C65/00 , B29C53/00 , B29D23/00
摘要： PURPOSE:To minimize deviation in thickness of a cylindrical body due to a mandrel by shifting a relative position between the cylindrical body and the mandrel carrying thereof in the circumferential direction through repeated movement of a press roll. CONSTITUTION:A cylindrical body (work W) is mounted on a mandrel 1 and then, rotated together. A roll 5 is moved along the axis of the mandrel 1 pressing against the circumference of the body. This movement is repeated several times. A mandrel mount part 2 is given a scale mark on the outer surface thereof in such a manner that relative position between the cylindrical body and the mandrel can be shifted in the circumferential direction with repeated movement of the roll 5 several times. Locking of the work W is done with a chuck after setting.

5. 发明专利

JPS561219A FORMING METHOD FOR BELLOWS 失效
公开(公告)号：JPS561219A
公开(公告)日：1981-01-08
申请号：JP7714579
申请日：1979-06-19
申请人： TOKYO SHIBAURA ELECTRIC CO
发明人： ARAKI JINICHIROU
IPC分类号： B21D15/10
摘要： PURPOSE:To improve the yield of the blank, and to manufacture the high quality bellows with uniform wall thickness, by detecting the elongative strain generated in the pipe blank's ?outer circumferential surface, at impressing the internal pressure by the hydraulic medium on the pipe blank arranged in the main body of the segmental die, and by increasing the axial force of the die's main body after this elongative strain reaches at the desired value. CONSTITUTION:The die segments 3... are parallelly arranged between the end plates 2, 2, placing a constant interval from each other; in thus constituted die's main body 1, the pipe blank 8 is held and its both end openings are attached to the inner faces of the end plates 2, 2. Under this condition, the axial forces 11, 11, are gradually increased by the transfer mechanism; during this pressure increasing period, the hydraulic medium is supplied from the fluid feed port 9; hereby, the internal pressure is impressed on the inner circumferential surface of the pipe blank 8, and the parts of the pipe blank 8 opposing to the valley 6 of the die segments 3... expand outward, and an elongative strain is generated in the inner circumferential direction. On the other hand, the distance between the marks (a), (b), previously marked in the outer surface of the pipe blank 8, is detected by the noncontact type displacement meter 10, so that if above elongative strain value reaches the desired value, this signal is sent to the transfer mechanism to increase the axial force. Hereby, the outer surface of the pipe blank is pressed tight against the inner circumferential surface of the mountain 5 and the valley 6 of the through hole 4, and the bellows 12 possessing corrugations 12a is formed.

6. 发明专利

JPS55150329A METAL MOLD FOR FORMING BELLOWS 失效
公开(公告)号：JPS55150329A
公开(公告)日：1980-11-22
申请号：JP5900879
申请日：1979-05-14
申请人： TOKYO SHIBAURA ELECTRIC CO
发明人： ARAKI JINICHIROU
IPC分类号： B29C65/00 , B29C49/00 , B29C53/00 , B29C53/30 , B29D23/18
摘要： PURPOSE:To provide bellows improved in the strength against the external pressure by providing a female mold forming a flat part at a part of a corrugated part, thinning a split mold in the vicinity of the female mold and making the waveform pitch in the periphery of the flat part small. CONSTITUTION:Split molds 3a-3i parallelly provided between end plates 2 and 2 are mutually separated, and each of split molds is divided into two parts to open the upper part of the main body 1 of the metal mold. Then, a tube 11 is accommodated in the metal mold mainbody 1, and both ends of the tube are bonded to the inner surfaces of the end plates 2 and 2, and thereafter the split molds 3a-3i are blocked. In this state, air is supplied in the tube 11 through an air supply port 12, and the end plates 2 and 2 are pressed in the arrow direction. The interval of the split molds 3a-3i is narrowed and bonded together. A female mold 7 is accommodated in the escaping parts 8 and 8 of the split molds 3d and 3f. As a result, bellows 13 having a flat part 13b at a part of the corrugated part 13a are formed, and a narrow corrugated part 13c is molded.

7. 发明专利

JPS5548429A HYDRAULIC PRESSURE BULGE MOLD 失效
公开(公告)号：JPS5548429A
公开(公告)日：1980-04-07
申请号：JP12119378
申请日：1978-10-03
申请人： TOKYO SHIBAURA ELECTRIC CO
发明人： ARAKI JINICHIROU
IPC分类号： B21D26/033 , B21D26/039 , B21D26/043 , B21D26/047
摘要： PURPOSE:The captioned mold which is able to mold the overhangs at several places at the same time to the substance to be worked, by mounting separately several female dies corresponding to several molding parts so that they can be moved freely, and locating the mandrels which can be freely slided in liquid-tightness between the female dies in the internal part of the substance to be worked. CONSTITUTION:One end part 4 is inserted into the fitting part 26, by reversing the first axial force body 13 to the right with the force piston, taking off the lids 42... of female dies 15a-15c, inserting the other end part 5 of the tubular substance to be worked into the fitting part 33 of the second axial force body 14, and subsequently sliding the axial force body 13 to the left. After each lid 42 has been set and fixed, as soon as the working liquid 29 is fed by pressure into the axial force body 13, regular pressure of the force piston moves the axial force body 13 by a regular quantity. The mandrel moving mechanism 17 of the pantagraph mechanism moves the mandrels 16a, 16b, being linked with movement of the axial force body 13, and the mold moving mechanism 18 moves the female dies 15a-15c in the same way. And the faces corresponding to the mandrels 16a, 16b are not deformed but desired overhang parts are molded on the faces corresponding to the female dies 15a-15c.

8. 发明专利

JPS58168436A CURVED FACE FORMING DEVICE 失效
公开(公告)号：JPS58168436A
公开(公告)日：1983-10-04
申请号：JP5200882
申请日：1982-03-30
申请人： TOKYO SHIBAURA ELECTRIC CO
发明人： ARAKI JINICHIROU
IPC分类号： B21D5/01 , B21D22/22
摘要： PURPOSE:To always form a good curved face, by providing a curved face forming die split into plural ring-shaped dies, and a forming driving system for moving forward each split die of this curved face forming die, in a crest shape successively from the split die of the outside. CONSTITUTION:A blank plate 1 fixed by clamp members 2, 2 is placed on the upper step of a curved face forming part 5 of a metallic die 3. A pressure medium feeding part 9 is driven and a piston 8 is driven by a command of a control part 10, and when a split die 4a of the outside is moved forward, the split die 4a is brought into contact with the blank plate 1, and the outside of the face to be curved of the blank plate 1 is bulged by pressure of the split die 4a. Subsequently, by a command of the control part 10, the second split die 4a from the outside is moved forward by a larger feed quantity than a feed quantity of the previous split die 4a, and subsequently, the blank plate 1 is bulged. This operation is repeated, and a curved face 13 is formed on the face to be curved.

9. 发明专利

JPS57178815A APPARATUS FOR MOLDING BELLOWS 失效
公开(公告)号：JPS57178815A
公开(公告)日：1982-11-04
申请号：JP6594381
申请日：1981-04-30
申请人： TOKYO SHIBAURA ELECTRIC CO
发明人： ARAKI JINICHIROU
IPC分类号： B29C45/00 , B29C53/10 , B29C57/00 , B29C57/04
摘要： PURPOSE:To mold at a low cost bellows with a large diameter, by arranging a set of molding pieces on the inner and outer surfaces of a raw pipe, and moving the molding pieces circumferentially. CONSTITUTION:A part of the raw pipe 9 where molding will be done is conducted and set between the molding roller 4 and the die piece 12. A connecting part 17 is connected to a port 16a, and after a prescribed pressure is applied on the side of the die piece 12, the connecting part 17 is removed. At the same time, when a prescribed pressure is applied on the side of the molding roller 4 via an oil passage 2 and branch oil passages 7, 7, the circumferential part of the wall of the raw pipe 9 is formed into an arcuate bulged part 23 projected outwardly by mating with the die 12 and the molding roller 4. In this state, when a molding piece moving mechanism 19 is operated, the die piece 12 and the molding roller 4 are rotated one turn, so that the bulged part 23 is extended circumferentially to form a turn of bellows having a prescribed height.

10. 发明专利

JPS57154328A METHOD FOR BENDING WORK 失效
公开(公告)号：JPS57154328A
公开(公告)日：1982-09-24
申请号：JP4009381
申请日：1981-03-19
申请人： TOKYO SHIBAURA ELECTRIC CO
发明人： ARAKI JINICHIROU
IPC分类号： B21D7/06
摘要： PURPOSE:To bend a material to be worked without buckling both sides, by applying different tensions to both ends of this material where the channel- shaped section is changed continuously along the longitudinal direction. CONSTITUTION:The approximate center in the longitudinal direction of a material 1 to be worked which has a channel-shaped section and bas the form of this section changed continuously is held between a bending jig 4 and press material 5. The jig 4 is formed to a shape like a flat roller, and the thickness in the direction of the diameter is tapered in accordance with the variance of breadthwise dimensions of the material 1. A constant tensile stress per a unit sectional area is applied to both end parts of the material 1 through chucks 7 and 8 which hold both ends of the material 1 between themselves. Simultaneously, chucks 7 and 8 are driven in directions of arrows (a) and (b) by respective driving sources 9 and 10 to apply a bending stress to the material 1. Thus, since the material 1 held between holding faces 4a and 5a of the jig 4 and the press material 5 is not slipped, the mateial 1 is bent well without creases due to buckling in both sides 3 and 3.

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