GB2457893A - Removing foreign matter from the water jacket of a cylinder head after casting - Google Patents
Removing foreign matter from the water jacket of a cylinder head after casting Download PDFInfo
- Publication number
- GB2457893A GB2457893A GB0803507A GB0803507A GB2457893A GB 2457893 A GB2457893 A GB 2457893A GB 0803507 A GB0803507 A GB 0803507A GB 0803507 A GB0803507 A GB 0803507A GB 2457893 A GB2457893 A GB 2457893A
- Authority
- GB
- United Kingdom
- Prior art keywords
- water
- foreign matter
- vicinity
- water holes
- cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title abstract description 135
- 238000005266 casting Methods 0.000 title abstract description 5
- 238000002347 injection Methods 0.000 abstract description 72
- 239000007924 injection Substances 0.000 abstract description 72
- 238000000034 method Methods 0.000 abstract description 8
- 239000004576 sand Substances 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 2
- 241000005139 Lycium andersonii Species 0.000 abstract 1
- 238000013019 agitation Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D31/00—Cutting-off surplus material, e.g. gates; Cleaning and working on castings
- B22D31/002—Cleaning, working on castings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/0009—Cylinders, pistons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D29/00—Removing castings from moulds, not restricted to casting processes covered by a single main group; Removing cores; Handling ingots
- B22D29/001—Removing cores
- B22D29/006—Removing cores by abrasive, water or air blasting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/0042—Devices for removing chips
- B23Q11/005—Devices for removing chips by blowing
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Cleaning By Liquid Or Steam (AREA)
Abstract
A method and apparatus are provided for removing foreign matter 70. eg core sand and chips, from a waterjacket 52 after casting, even in a cylinder head 50 of complicated construction. With the cylinder head 50 supported, eg on a pallet 11, so that the in-line cylinder chambers 51 A-D are vertically aligned, water then air is injected into the water holes 53A, 538 in the vicinity of the uppermost cylinder chamber 51A; then, a similar injection operation is carried out into the water holes 53B to 53D in the vicinities of the middle cylinder chambers 51B, 51C, followed by an injection operation on the waterholes 53D, 53E in the vicinity of the lowermost cylinder chamber 51D and finally an injection operation on the water holes 53A, 53B in the vicinity of the uppermost cylinder chamber 51A.
Description
1 2457893
METHOD AND APPARATUS FOR REMOVING FOREIGN MATTER
BACKGROUND OF THE INVENTION
Field of the Invention
The present invention relates to a method and apparatus for removing foreign matter.
Related Art A cylinder head has conventionally been used for a vehicle engine. The cylinder head produced by casting is formed with a water jacket using core sand when casting.
Consequently, since foreign matter such as core sand and chips remains in the water jacket, a method for removing foreign matter by injecting water into the water jacket is provided (for example, refer to Japanese Patent No. 2747142).
SUMMARY OF THE INVENTION
Generally, the water jacket for a gasoline and diesel engine is a complicated structure and is referred to as a closed type. Accordingly, with regard to the water jacket foreign matter can be removed with the method described in Patent Document 1.
In view of the aforementioned problems, an object of the present invention is to provide a method and apparatus for reliably removing foreign matter in a water jacket even with a cylinder head of a complicated construction.
A method for removing foreign matter according to the present invention, the foreign matter in a water jacket, which is formed surrounding a plurality of cylinder chambers formed in a straight line and disposed in a cylinder head having the cylinder chambers and the water jacket, and formed with the water holes communicating with the water jacket in the vicinity of each of the cylinder chambers, being exteriorly removed by a method including steps of: disposing the cylinder head so that the plurality of cylinder chambers vertically align; performing an injection operation for injecting air after water injection into the water holes in the vicinity of the cylinder chamber at the uppermost position; performing the injection operation on the water holes proximal to the cylinder chambers, other than those at the uppermost and lowermost positions; performing the injection operation on the water holes in the vicinity of the cylinder chamber at the lowermost position; and finally performing the injection operation on the water holes in the vicinity of the cylinder chamber at the uppermost position.
According to the present invention, the cylinder head is disposed so that a plurality of cylinder chambers vertically align. After the injection operations are performed in the order of the water holes in the vicinity of the cylinder chamber at the uppermost position, on the water holes proximal to the cylinder chambers, other than those at the uppermost and lowermost positions, and on the water holes in the vicinity of the cylinder chamber at the lowermost position, the injection operation is performed on the water holes in the vicinity of the cylinder chamber at the uppermost position.
Accordingly, the first injection operation performed on the water holes in the vicinity of the cylinder chamber at the uppermost position removes most of foreign matter in the water jacket exteriorly from the water holes proximal to the cylinder chambers, other than that at the uppermost position.
The second injection operation to the water holes proximal to the cylinder chambers, other than those at the uppermost and lowermost positions, agitates the foreign matter remaining in the water jacket. As described above, the agitation of foreign matter remaining in the water jacket during removal of foreign matter in the water jacket to the exterior can prevent the foreign matter from accumulating in a corner of the water jacket, or the like. The final injection operation performed on the water holes in the vicinity of the cylinder chamber at the uppermost position removes foreign matter remaining in the water jacket exteriorly from the water holes proximal to the cylinder chambers, other than that at the uppermost position.
As described above, the agitation of foreign matter remaining in the water jacket during removal, of foreign matter in the water jacket to the exterior can prevent the foreign matter from being accumulating in a corner of the water jacket or the like. Accordingly, the injection operation is'performed on the water holes in the vicinity of the cylinder chamber at the lowermost position and then on the water holes in the vicinity of the cylinder chamber at the uppermost position (I 4 after agitation can reliably remove the foreign matter remaining in the water jacket to the exterior.
An apparatus for removing foreign matter from a casting according to the present invention, the foreign matter in a water jacket, which is formed surrounding a plurality of cylinder chambers formed in a straight line and disposed in a cylinder head having the cylinder chambers and the water jacket, and formed with the water holes communicating with the water jacket in the vicinity of each of the cylinder chambers, being removed exteriorly means of: a product support means for supporting the cylinder head so that the plurality of cylinder chambers vertically align; an injection section provided facing the product support means, and injecting water or air into the water holes; and a control section for controlling the product support means and the injection section, in which the control section performs the injection operation for injecting air into the water holes in the vicinity of the cylinder chamber at the uppermost position after water injection; followed by, the water holes proximal to cylinder chambers, other than those at the uppermost and lowermost positions; then, and finally, the water holes in the vicinity of the cylinder chamber at the lowermost position, and the water holes in the vicinity of the cylinder chamber at the uppermost position.
The present invention provides effect(s) which are similar to those mentioned above.
According to the present invention, the cylinder head is / 5 disposed so that the plurality of cylinder chambers vertically align. After the injection operation is performed in the order of the water holes in the vicinity of the cylinder chamber at the uppermost position, the water holes proximal to the cylinder chambers, other than those at the uppermost and lowermost positions, and the water holes in the vicinity of the cylinder chamber at the lowermost position, the injection operations are performed on the water holes in the vicinity of the cylinder chamber at the uppermost position.
Accordingly, the first injection operation performed on the water holes in the vicinity of the cylinder chamber at the uppermost position removes most of the foreign matter in the water jacket to the exterior from the water holes in the vicinities of the cylinder chambers, other than that at the uppermost position. The second injection operation performed on the water holes in proximal to the cylinder chambers, other than those at the uppermost and lowermost positions, agitates the foreign matter remaining in the water jacket. The subsequent injection operation performed on the water holes in the vicinity of the cylinder chamber at the lowermost position removes foreign matter remaining in the water jacket to the exterior, from the water holes in the vicinity of the cylinder chamber at the lowermost position. The final injection operation performed on the water holes in the vicinity of the cylinder chamber at the uppermost position removes foreign matter remaining in the water jacket to the exterior, from the water holes in the vicinities of the cylinder chambers except 1 6 that at the uppermost position.
As described above, agitation of the foreign matter remaining in the water jacket during removal of foreign matter in the water jacket to the exterior can prevent the foreign matter from accumulating in a corner of the water jacket, or the like. Accordingly, the injection operation performed on the water holes in the vicinity of the cylinder chamber at the lowermost position and then to the water holes in the vicinity of the cylinder chamber at the uppermost position after the agitation can reliably remove foreign matter remaining in the water jacket to the exterior.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a schematic configuration diagram of an apparatus for removing foreign matter according to an embodiment of the present invention.
FIG. 2 is a block diagram describing an operation of the apparatus for removing foreign matter.
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described in greater detail with reference to the accompanying drawing(s).
FIG. 1 is a diagram showing a schematic configuration of an apparatus 10 for removing foreign matter according to one embodiment of the present invention.
The apparatus 10 for removing foreign matter removes 1 7 foreign matter 70 in a water jacket 52 formed in a cylinder head 50 to the exterior. The apparatus 10 for removing foreign matter is composed of a carrier pallet 11 as a product support means for supporting the cylinder head 50, an injection system 12 as an injection section provided facing the carrier pallet 11, and a control section (not illustrated) for controlling the carrier pallet 11 and the injection system 12.
The cylinder head 50 has four cylinder chambers 51A, 51B, SiC, and 51D formed in a straight line and a water jacket 52 formed surrounding the four cylinder chambers 51A to SOD.
Water holes 53A, 53B, 53C, 53D, and 53E communicating with the water jacket 52 are formed in the vicinity of each of the cylinder chambers 51A to 51D. The water jacket 52 unavoidably has foreign matter 70, such as core sand and chips.
The carrier pallet 11 supports the cylinder head 50 so that the cylinder chambers 51A to S1D vertically align.
The injection system 12 includes a tank 121 for accommodating cleaning fluid, a pump 122 for feeding compressed air, a switching valve 123, eight injection nozzles 131A, 131B, 132A, 132B, 133A, 133B, 134A, and 134B.
The tank 121 and the pump 122 are connected with each other through a first pipe 141 and, on the way to the first pipe 141, a switching valve G is installed.
The pump 122 and the switching valve 123 are connected with each other via a second pipe 142.
The switching valve 123 is fitted with a third pipe 143 extending to the inside of the tank 121. / 8
The switching valve 123 is fitted with a third pipe 143 extending to the inside of the tank 121.
A fourth pipe 144 consists of a main pipe 144E extending from the switching valve 123 and four sub-pipes 144A, ].44B, 144C, and 144D branched from the main pipe 144E.
Enroute to the main pipe 144E, a pressure relief valve E for communicating the main pipe 144E with the exterior is provided.
Enroute to the sub-pipe 144A to 144D, switching valves A, B, C, and D are respectively provided.
The sub pipe 144A is branched into two portions, the ends of which are fitted with injection nozzles 131A, and 131B, respectively. Similarly, the sub-pipe 144B is branched into two portions, the ends of which are fitted with injection nozzles 132A, and 132B, respectively. The sub-pipe 144C is branched into two portions, the ends of which are fitted with injection nozzles 133A, and 133B, respectively. The sub-pipe 144D is branched to two portions, the ends of which are fitted with injection nozzles 134A, and 134B. respectively.
The injection nozzles 131A to 134A, and 131B to 134B are fixed by a fixing section 13, and the injection nozzles 131A, and 131B face water holes 131A. and 131B in the vicinity of the cylinder chamber 51A, while the injection nozzles 132A, and 132B face water holes 53B, and 53C in the vicinity of the cylinder chamber SiB. The injection nozzles 133A, and 133B face the water holes 53C, and 53D in the vicinity of the cylinder chamber 51C, while the injection nozzles 134A, and / 9 134B face the water holes 53D, and 53E in the vicinity of the cylinder chamber 51D.
Hereinafter, the operation of the apparatus 10 for removing foreign matter will be explained.
First, operation for injecting water will be described.
When injecting water from the injection nozzles 131A, and 131B, the pump 122 is always driven to open the switching valves A, and G, and to close the switching valves B to D and the pressure relief valve E. At the same time, the switching valve 123 is operated to connect the second pipe 142 with the main pipe 144E. As a result, water in the tank 121 is injected from the injection nozzles 131A, and 131B, passing through the second pipe 142, the main pipe 144E and the sub-pipe 144A.
The water injection from the injection nozzles 132A, and 132B is the same as water injection from the injection nozzles 131A, and 131B, however, the switching valves B, and G are opened, and the switching valves A, C, and D and the pressure relief valve E are closed. When injecting water from the injection nozzles 133A, and 133B, the switching valves C, and G are opened, and the switching valves A, B, and D and the pressure relief valve E are closed. When injecting water from the injection nozzles 134A, and 134B, the switching valves D, and G are opened, and the switching valves A to C and the pressure relief valve E are closed.
Next, the operation for injecting air will be described.
Specifically, when injecting air from the injection nozzles 131A, and 131B, the pump 122 is always driven to open / 10 the switching valves A and the pressure relief valve E, and to close the switching valves B to D, and G. At the same time, the switching valve 123 is operated to connect the second pipe 142 with the main pipe 144E. As a result, air flows from the pressure relief valve E and is injected from the injection nozzles 131A, 131B, passing through the main pipe 144E and the sub pipe 144A.
Air injection from the injection nozzles 132A, and 132B is the same as air injection from the injection nozzles 131A, and 131B, however, the switching valves B and the pressure relief valve E are opened, and the switching valves A, C, D, and G are closed. In injecting air from the injection nozzles 133A, and 133B, the switching valve C and the pressure relief valve E are opened, and the switching valves A, B, D, and G are closed. When injecting air from the injection nozzles 134A, and 134B, the switching valve D and the pressure relief valve E are opened, and the switching valves A to C. and G are closed.
Subsequently, the operation for injecting water or air will be described.
In this case, the switching valve 123 is operated to connect the second pipe 142 with the third pipe 143. The pump 122 is always driven, so that water in the tank 121 is returned into the tank 121 for circulation, passing through the second pipe and the third pipe 143.
With reference to FIG. 2, the operation of the apparatus for removing foreign matter will be described below. / 11
In Step Si, first, after the cylinder head 50 is supported by the carrier pallet ii so that the cylinder chambers 51A to 51D vertically align, the injection nozzles 131A to 134A, and 131B to 134B are brought near the water holes 53A to 53E. As a result, the injection nozzles 131A, and 131B face the water holes 53A, and 53B in the vicinity of the cylinder chamber 51A at the uppermost position, while the injection nozzles 134A, and 134B face the water holes 53D, and 53E in the vicinity of the cylinder chamber 51D at the lowermost position. Furthermore, of the water holes 53B to 53D proximal to the cylinder chambers SiB, 51C other than those at the uppermost and lowermost positions, the injection nozzle 132A faces the water hole 53B, the injection nozzles 132B, and 133A face the water hole 53C, and the injection nozzle 133B faces the water hole 53D.
Next, in Step S2, after water is injected into the water holes 53A, and 53B in the vicinity of the cylinder chamber 51A at the uppermost position from the injection nozzles 131A, and 131B, air is injected. This removes most of the foreign matter in the water jacket 52 to the exterior from the water holes 53C to 53E.
Next, in Step S3, after water is injected into the water holes 53B to 53D proximal to the cylinder chambers 51B, and SiC, other than those at the uppermost and lowermost positions from the injection nozzles 132A, 132B, 133A, and 133B, air is injected. This agitates the foreign matter 70 remaining in the water jacket 52.
Next, in Step S4, after water is injected into the water holes 53D, and 53E in the vicinity of the cylinder chamber 51D at the lowermost position from the injection nozzles 134A, and 134B, air is injected. This removes the foreign matter 70 remaining in the water jacket 52 to the exterior from the water holes 53A to 53C.
Next, in Step S5, after water is injected into the water holes 53A, and 53B in the vicinity of the cylinder chamber 51A at the uppermost position from the injection nozzles 131A, and 131B, air is injected. This removes the foreign matter 70 remaining in the water jacket 52 to the exterior from the water holes 53C to 53E.
The present embodiment provides the following effect(s): (l)The cylinder head 50 is disposed so that the cylinder chambers 51A to 51D vertically align. After the injection operation is performed in the order of the water holes 53A, and 53B in the vicinity of the cylinder chamber 51A at the uppermost position, the water holes 53B to 53D in the vicinities of the cylinder chambers SiB, and SiC, other than those at the uppermost and lowermost positions and the water holes 53D, and 53E in the vicinity of the cylinder chamber 51D at the lowermost position, the injection operation is performed on the water holes 53A, and 53B in the vicinity of the cylinder chamber 51A at the uppermost position.
Accordingly, the first injection operation performed on the water holes 53A, and 53B in the vicinity of the cylinder chamber 51A at the uppermost position removes most of the / 13 foreign matter in the water jacket to the exterior from the water holes 53C to 53E proximal to the cylinder chambers 51B to 51D, other than that at the uppermost position. The second injection operation performed on the water holes 53B to 53D in the vicinities of the cylinder chambers 518, and 51C, other than those at the uppermost and lowermost positions agitates the foreign matter 70 remaining in the water jacket 52. The subsequent injection operation performed on the water holes 53D, and 53E in the vicinity of the cylinder chamber 51D at the lowermost position removes the foreign matter 70 remaining in the water jacket 52 to the exterior from the water holes 53A to 53C in the vicinities of the cylinder chambers 51A to 51C, other than that at the lowermost position. The final injection operation performed on the water holes 53A, and 53B in the vicinity of the cylinder chamber 51A at the uppermost position removes the foreign matter 70 remaining in the water jacket 52 to the exterior from the water holes 53C to 53E proximal to the cylinder chambers 51B to 51D except that at the uppermost position.
As described above, the agitation of the foreign matter remaining in the water jacket during removal foreign matter in the water jacket 52 to the exterior can prevent the foreign matter 70 from being accumulated in a corner of the water jacket 52 or the like. Accordingly, the injection operation performed on the water holes 53D, and 538 in the vicinity of the cylinder chamber 51D at the lowermost position and then to the water holes 53A, and 53B in the vicinity of the cylinder chambers 51A at the uppermost position after the agitation can reliably remove the foreign matter 70 remaining in the water jacket 52 to the exterior.
While preferred embodiments of the present invention have been described and illustrated above, it is to be understood that they are exemplary of the invention and are not to be considered to be limiting. Additions, omissions, substitutions, and other modifications can be made thereto without departing from the spirit or scope of the present invention.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0803507A GB2457893B (en) | 2008-02-26 | 2008-02-26 | Method and apparatus for removing foreign matter |
| JP2009006770A JP5336863B2 (en) | 2008-02-26 | 2009-01-15 | Foreign matter discharge method and foreign matter discharge device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0803507A GB2457893B (en) | 2008-02-26 | 2008-02-26 | Method and apparatus for removing foreign matter |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB0803507D0 GB0803507D0 (en) | 2008-04-02 |
| GB2457893A true GB2457893A (en) | 2009-09-02 |
| GB2457893B GB2457893B (en) | 2010-02-03 |
Family
ID=39284599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB0803507A Expired - Fee Related GB2457893B (en) | 2008-02-26 | 2008-02-26 | Method and apparatus for removing foreign matter |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5336863B2 (en) |
| GB (1) | GB2457893B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011137211A1 (en) * | 2010-04-29 | 2011-11-03 | Parker-Hannifin Corporation | System and method for flushing castings |
| CN104259930A (en) * | 2014-10-16 | 2015-01-07 | 清华大学 | Protection system for numerically-controlled machine tool |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113264371A (en) * | 2021-07-07 | 2021-08-17 | 江西理工大学 | Magnetic suspension grabbing type hospital medicine transportation equipment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07308751A (en) * | 1994-05-20 | 1995-11-28 | Aisin Takaoka Ltd | Method for removing residual foreign matter in inner part of hollow casting |
| JPH10211567A (en) * | 1997-01-24 | 1998-08-11 | Mitsubishi Motors Corp | Method for removing molding sand |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01205865A (en) * | 1988-02-12 | 1989-08-18 | Mazda Motor Corp | Method for removing core sand in casting |
| JPH02175046A (en) * | 1988-12-26 | 1990-07-06 | Nissan Motor Co Ltd | Apparatus for discharging core sand in casting product |
| JP2747142B2 (en) * | 1991-09-27 | 1998-05-06 | 日立金属株式会社 | Method and apparatus for removing core sand from castings |
| JP3968239B2 (en) * | 2001-12-26 | 2007-08-29 | 本田技研工業株式会社 | Removal of core sand |
-
2008
- 2008-02-26 GB GB0803507A patent/GB2457893B/en not_active Expired - Fee Related
-
2009
- 2009-01-15 JP JP2009006770A patent/JP5336863B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07308751A (en) * | 1994-05-20 | 1995-11-28 | Aisin Takaoka Ltd | Method for removing residual foreign matter in inner part of hollow casting |
| JPH10211567A (en) * | 1997-01-24 | 1998-08-11 | Mitsubishi Motors Corp | Method for removing molding sand |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011137211A1 (en) * | 2010-04-29 | 2011-11-03 | Parker-Hannifin Corporation | System and method for flushing castings |
| US8608863B2 (en) | 2010-04-29 | 2013-12-17 | Parker-Hannifin Corporation | System and method for flushing castings |
| CN104259930A (en) * | 2014-10-16 | 2015-01-07 | 清华大学 | Protection system for numerically-controlled machine tool |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2457893B (en) | 2010-02-03 |
| JP5336863B2 (en) | 2013-11-06 |
| GB0803507D0 (en) | 2008-04-02 |
| JP2009202232A (en) | 2009-09-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20170226 |