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21. 发明专利

JP2001227465A MANUFACTURING METHOD FOR HOLLOW PISTON FOR COMPRESSOR 失效
公开(公告)号：JP2001227465A
公开(公告)日：2001-08-24
申请号：JP2000041659
申请日：2000-02-18
申请人： TOYODA AUTOMATIC LOOM WORKS
发明人： KATO TAKAYUKI , TAKAMATSU MASATO , HOSHIDA TAKAHIRO , ENOSHIMA FUMINOBU
IPC分类号： F04B39/00 , B23K15/04 , B23K26/28 , B23K33/00 , F04B27/08 , F04B27/12
摘要： PROBLEM TO BE SOLVED: To avoid lowering of jointing strength at the joint of a hollow cylindrical member and a blocking member. SOLUTION: A piston material for manufacturing a hollow piston is equipped with a piston body member 162 integrally provided with a bottomed cylindrical part 170 having a bottom wall and a hollow cylindrical part 174 and the engagement part, and a cap 164 to block up the opening of the bottomed cylindrical part 170. The cap 164 forms a bottomed cylindrical shape provided with a bottom wall 192, a cylindrical large diameter part 194 axially extending from the peripheral part of the bottom wall 192, and a cylindrical small diameter part 198 axially extending from the inner peripheral part of the end surface 196 of the large diameter part 194. A ring-shaped clearance groove 220 is formed in an area adjacent to the end surface 196 of the peripheral surface 204 of the small diameter part 198. The peripheral surface 204 of the small diameter part 198 of the cap 164 is made to engage with the inner peripheral surface 178 of the hollow cylindrical part 174 of the bottomed cylindrical part 170 up to the depth where the end surface 230 on the opening side abuts on the end surface 196, and thereby, the end surfaces 196, 230 are mutually welded as welding surfaces. The end surface 196 can be welded to the end surface 230 without producing a gap between them thanks to this clearance groove 220.

22. 发明专利

JP2001099056A PISTON FOR SWASH PLATE COMPRESSOR 失效
公开(公告)号：JP2001099056A
公开(公告)日：2001-04-10
申请号：JP27570699
申请日：1999-09-29
申请人： TOYODA AUTOMATIC LOOM WORKS
发明人： KATO TAKAYUKI , TAKAMATSU MASATO
IPC分类号： F04B25/04 , F04B27/08
摘要： PROBLEM TO BE SOLVED: To provide a piston excellent in durability, lightweight, and manufacturable at low cost. SOLUTION: This piston 14 comprises an engagement part 70 to be engaged with a swash plate through a pair of shoes and a head part 72 to be fitted to a cylinder bore. The engagement part 70 slidably retains the shoes in a pair of recessed parts 114. The head part 72 comprises a head body part 120 and a cover member 122 as a blocking member for blocking the opening of the head body part 120. The engagement part 70 and the head body part 120 are made of an aluminum alloy having a silicon content of 5-13 wt.% and integrally formed by casting. The cover member 122 is formed of a thermosetting synthetic resin containing glass fiber as reinforcing material. The cover member 122 is fixed to the head body part 120 by adhesion and caulking. The engagement part 70 requiring wear resistance is formed of a material excellent in wear resistance, and the top side of the head part 72 requiring no wear resistance (cover member 212) is formed of a lightweight and inexpensive material.

23. 发明专利

JP2000158083A FORGING APPARATUS AND FORGING METHOD 失效
公开(公告)号：JP2000158083A
公开(公告)日：2000-06-13
申请号：JP33909798
申请日：1998-11-30
申请人： TOYODA AUTOMATIC LOOM WORKS , TOKYU CO LTD
发明人： KATO TAKAYUKI , TAKAMATSU MASATO , IWAMORI HIDEKAZU , IKUTA SATORU
IPC分类号： B21J5/06 , B21J5/12 , F04B27/08 , F04B39/00
摘要： PROBLEM TO BE SOLVED: To provide a forging apparatus which can form a recessed part on the outer periphery of a forged product without arranging a large movable die and miniaturize by simplifying a die structure and easily deal with forging without executing a drastic change of the arrangement. SOLUTION: A metallic blank 27 is intensely pressed in the forging die 21 to form the forged product 46 following to the die surface shape of the forging die 21. In order to form the recessed part 49 on the outer periphery of the forged product 46, the movable die 26 having more slender width than the length of the recessed part 49 in the forging die 21, is disposed so as to be shiftable in the rectangular direction to the intensely pressing direction to the metallic blank 27. When the metallic blank 27 is intensely pressed, the movable die 26 is projected toward the metallic blank 27 side from the die surface of the forging die 21 to form the recessed part 49 on the outer periphery of the forged product 46.

24. 发明专利

JPH11303747A COMPRESSOR PISTON 失效
公开(公告)号：JPH11303747A
公开(公告)日：1999-11-02
申请号：JP10927898
申请日：1998-04-20
申请人： TOYODA AUTOMATIC LOOM WORKS
发明人： KATO TAKAYUKI , TAKAMATSU MASATO , TAKENAKA KENJI
IPC分类号： F04B39/00 , F04B27/08
摘要： PROBLEM TO BE SOLVED: To provide a compressor piston to bond a cylindrical part and a lid part together without heating. SOLUTION: This piston 22 joins a head part 40 disposed in a cylinder bore 12a to a neck part 42 connecting to a slanting plate 20. The head part 40 comprises a cylindrical part 41 forming a shape of a cylinder with a lid, and a lid part 43 that is a different body therefrom so as to seal an inside space 41a therein. The lid part 43 is integrated with the neck part 42. The cylindrical part 41 and the neck part 42 are bonded together by caulking with an adhesive.

25. 发明专利

JPH1026081A PISTON OF COMPRESSOR AND COATING METHOD THEREFOR 失效
公开(公告)号：JPH1026081A
公开(公告)日：1998-01-27
申请号：JP17789696
申请日：1996-07-08
申请人： TOYODA AUTOMATIC LOOM WORKS
发明人： KATO TAKAYUKI , SUGIOKA TAKAHIRO , FUKUSHIMA SHIGEO , TAKAMATSU MASATO
IPC分类号： F04B39/00 , F04B27/08
摘要： PROBLEM TO BE SOLVED: To facilitate the masking action by forming a coating layer through a process of transferring and applying a coating material to a sliding part to a housing through a transfer pattern formed on a screen. SOLUTION: A workpiece holder 46 enables a piston workpiece 22W to be rotated, a screen 47 provided with a meshed transfer pattern 47a is linearly moved, and a driving function 48 to be rotated around the axis of the workpiece holder 46, and a squeegee 49 to be brought in contact with the upper surface of the screen 47 are provided. The piston workpiece 22W and the screen 47 are rotated and moved in the direction of an arrow, and the screen 47 is pinched between the squeegee 49 and the piston workpiece 22W. A coating material C is pressed to the screen 47 by the squeegee 49, passes only the transfer pattern 47a, and transferred and applied by coinciding with the shapes of both head part outer peripheral surfaces 39a, 40a of the piston workpiece 22W, annular parts 39b, 40b, non-annular parts 39c, 40c separated by a recessed part 41, continually formed annular facing parts 47b, and discontinuously formed non-annular facing parts.

26. 发明专利

JP2001289160A PISTON IN COMPRESSOR AND METHOD OF MANUFACTURING THE SAME 失效
公开(公告)号：JP2001289160A
公开(公告)日：2001-10-19
申请号：JP2000101020
申请日：2000-04-03
申请人： TOYODA AUTOMATIC LOOM WORKS
发明人： HOSHIDA TAKAHIRO , ENOSHIMA FUMINOBU , KATO TAKAYUKI , TAKAMATSU MASATO , KATAYAMA SEIJI , FUKUSHIMA SHIGEO
IPC分类号： F04B39/00 , B22C9/06 , B22C9/22 , B22D17/00 , B22D17/22 , B22D27/09 , F04B27/08
摘要： PROBLEM TO BE SOLVED: To lighten a tip wall of a piston to lighten the piston. SOLUTION: The inside of a piston 17 is provided with a hollow part 171. The piston 17 is formed by connecting a first piston piece 31 including the tip wall 30 and a second piston piece 32 kept into contact with a shoe. An inner end face 37 of the tip wall 30 is composed of an annular recess 371 continued to a peripheral wall 35, and an annular projection 372 mounted inside of the annular recess 371. The shape of a cross section obtained by cutting an arbitrary place of the annular recess 371 on a plane S passing a central axis L is a circular arc 373. The annular recess 371 and the annular projection 372 surround the central axis L.

27. 发明专利

JP2001271746A MANUFACTURING METHOD FOR COMPRESSOR PISTON 失效
公开(公告)号：JP2001271746A
公开(公告)日：2001-10-05
申请号：JP2000083543
申请日：2000-03-24
申请人： TOYODA AUTOMATIC LOOM WORKS
发明人： KATO TAKAYUKI , ISHIKAWA TATSUHITO , TAKAMATSU MASATO , ENOSHIMA FUMINOBU , SUGIURA MANABU
IPC分类号： F04B39/00 , F04B27/08
摘要： PROBLEM TO BE SOLVED: To reduce local unevenness of the thickness of a coating layer in a piston. SOLUTION: A raw material 160 for manufacturing an one head piston is provided with a piston main body member 162 integratedly formed in a condition in which engaging parts 166 of members wherein a bottomed cylindrical part 170 for composing a head part and the engaging part 166 are integrated with each other are connected to each other, and a cap 164 for closing an opening of the bottomed cylindrical part 170. After the cap 164 is fixed to the opening part of the bottomed cylindrical part 170, a center hole 216 is formed on a holding part 212 of the cap 164 in pre-mechanical work process, and outer peripheral surfaces of the bottomed cylindrical part 170 and the cap 164 are cut-worked. In a plastic deformation applying process, a half finished product 220 after pre-mechanical work is plastically deformed in the plastic deformation applying process. After the outer peripheral surface of the half finished product 220 is coated, a backing process is executed by means of heating. Warping generated at the time of backing is eliminated by reverse warping applied in the plastic deformation applying process. After that, centerless cut and the like are performed on the outer peripheral surface of the half finished product 220 in a post mechanical work process, and the half finished product 220 is separated into two parts so as to provide two pistons.

28. 发明专利

JP2001263240A METHOD OF MANUFACTURING HOLLOW PISTON FOR COMPRESSOR 失效
公开(公告)号：JP2001263240A
公开(公告)日：2001-09-26
申请号：JP2000071674
申请日：2000-03-15
申请人： TOYODA AUTOMATIC LOOM WORKS
发明人： KATO TAKAYUKI , KATAYAMA SEIJI , TAKAMATSU MASATO , FUKUSHIMA SHIGEO , HOSHIDA TAKAHIRO , ENOSHIMA FUMINOBU
IPC分类号： F04B39/00 , B22D17/00 , F04B27/08
摘要： PROBLEM TO BE SOLVED: To avoid reduction in joining strength of a bottomed cylindrical member and a blocking-up member. SOLUTION: A metal mold device for molding a body member 162 has an opening-closing mold 270 and slide cores 280 and 282. The slide cores 280 and 282 are arranged so as to be capable of advancing and retreating in the opening- closing mold 270 in the direction parallel to the center line of the bottomed cylindrical part 170 and in the direction orthogonal to the opening-closing direction of the opening-closing mold 270. The opening-closing mold 270 is closed, and in a state of being moved to an advance end position where a shoulder surface 344 of the slide cores 280 and 282 abuts to a shoulder surface 368, a molten metal is injected into a cavity 286 to mold the body member 162. An inner peripheral surface 178 of the bottomed cylindrical part 170 is molded by an outer peripheral surface 346 of a tip part 342 of the slide cores 280 and 282, and an opening side end surface 176 is molded by the shoulder surface 344. A cap is fitted without applying machine work to the inner peripheral surface 178 of the bottomed cylindrical part 170 and the opening side end surface 176 to mutually join mutual close contact end surfaces.

29. 发明专利

JP2001221154A PISTON IN COMPRESSOR AND METHOD OF MAKING PISTON 失效
公开(公告)号：JP2001221154A
公开(公告)日：2001-08-17
申请号：JP2000028201
申请日：2000-02-04
申请人： TOYODA AUTOMATIC LOOM WORKS
发明人： KATO TAKAYUKI , TAKAMATSU MASATO , KAYUKAWA HIROAKI
IPC分类号： F04B39/00 , B22C9/06 , B22C9/10 , B22C9/24 , B22D29/00 , F04B27/08 , F16J1/00
摘要： PROBLEM TO BE SOLVED: To attain both reduction of cost and lightening of weight in a piston. SOLUTION: This piston is manufactured by letting an aluminum-made molten metal flow in a mold assembling a first mold 33 and a second mold 34. A fluorine rubber-made core 31 is mounted incapable of detaching in the first mold 33. After the molten metal is solidified, when the molds 33, 34 are opened, the core 31 can be taken out while performing elastic deformation from in a semi-piston 32 formed by solidifying the molten metal. The piston is formed by cut forming a hold recessed part 171 for holding a shoe in the semi-piston 32 taken out from in the molds 33, 34.

30. 发明专利

JP2001107853A METHOD OF MAKING FOR PISTION FOR SWASH PLATE TYPE COMPRESSOR 失效
公开(公告)号：JP2001107853A
公开(公告)日：2001-04-17
申请号：JP29118899
申请日：1999-10-13
申请人： TOYODA AUTOMATIC LOOM WORKS , ARUTETSUKUSU KK
发明人： TAKAMATSU MASATO , KATO TAKAYUKI , KATAYAMA SEIJI , FUKUSHIMA SHIGEO
IPC分类号： B22D17/00 , F04B27/08 , F04B39/00
摘要： PROBLEM TO BE SOLVED: To provide a piston of which the main body is a thin wall and has a high intensity. SOLUTION: A one head piston manufacturing raw material 160 is molded by a pore-free die-cast method so as to produce two of the one head pistons. A cavity 212 formed inside a pair of dies is made with such a configuration that a cavity 227 for forming a main body member 162 of the raw material 160 and a cavity 228 for forming a cover member 164 are communicated with each other at a part where an engagement part 165 of the main body member 162 is formed. The inside of the cavity 212 is charged with oxygen under such a condition that the cavity 212 is formed by disposing slide cores 222, 223 in cavity surfaces 224, 226, thereafter, molten metal of an aluminum alloy is blown into the cavity 212 to thereby react the oxygen with the molten metal so as to made a high degree vacuum condition in the cavity 212 so as to prevent entraining of air. A piston is formed, of which a head main body 168 with thin wall and has a high intensity.

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