CN1745238B - Method of producing cylinder block and cylinder sleeve by friction stir welding - Google Patents

Method of producing cylinder block and cylinder sleeve by friction stir welding Download PDF

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Publication number
CN1745238B
CN1745238B CN200480002999.8A CN200480002999A CN1745238B CN 1745238 B CN1745238 B CN 1745238B CN 200480002999 A CN200480002999 A CN 200480002999A CN 1745238 B CN1745238 B CN 1745238B
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CN
China
Prior art keywords
friction stir
cylinder
cylinder block
stir welding
cylinder liner
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Expired - Fee Related
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CN200480002999.8A
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Chinese (zh)
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CN1745238A (en
Inventor
砂田俊秀
伊势田泰
小杉雅纪
长尾和心
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Honda Motor Co Ltd
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Honda Motor Co Ltd
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Priority claimed from JP2003019426A external-priority patent/JP2004261813A/en
Priority claimed from JP2003021063A external-priority patent/JP2004261815A/en
Priority claimed from JP2003021059A external-priority patent/JP2004261814A/en
Priority claimed from JP2003021056A external-priority patent/JP4074523B2/en
Priority claimed from JP2003154866A external-priority patent/JP4058382B2/en
Priority claimed from JP2003154817A external-priority patent/JP2004351505A/en
Priority claimed from JP2003154794A external-priority patent/JP4262524B2/en
Priority claimed from JP2003154846A external-priority patent/JP2004351506A/en
Application filed by Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Priority claimed from PCT/JP2004/000745 external-priority patent/WO2004074667A1/en
Publication of CN1745238A publication Critical patent/CN1745238A/en
Publication of CN1745238B publication Critical patent/CN1745238B/en
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Abstract

A reduced-diameter portion (44) with a taper portion (46), a portion whose diameter is reduced in a tapered form, is provided on an inner peripheral wall of a cylinder sleeve (20a, 20b, 20c). On the outer peripheral wall of the top end of the cylinder sleeve (20a, 20b, 20c) is provided a large diameter portion (36a, 36b, 36c) projected outward along the diameter direction. Under the action of a friction stir welding tool (50), the cylinder sleeve (20a, 20b, 20c) inserted in a communication hole (16) of a block body (18) is joined to the block body (18) with the reduced-diameter portion (44) and the large-diameter portion (36a, 36b, 36c) in between. A closed deck-type cylinder block (10) is constructed with the process above. In the cylinder block (10), the gasket face (12) side of a waterjacket (22) is closed by the large-diameter portion (36a, 36b, 36c).

Description

Make the method for cylinder block and cylinder liner by friction stir welding
Technical field
The present invention relates to be applicable to the friction stir welding method that engages the gentle main body cylinder block of cylinder liner.
Background technique
A kind of cylinder block that is used for the internal-combustion engine of automobile etc. is top enclosed (closed-deck) cylinder block 1, as shown in Figure 58 of accompanying drawing.Because top enclosed cylinder body 1 has water jacket 2 in pad surfaces 3 place's closures, so the advantage of top enclosed cylinder body 1 is that it more has rigidity than the open-deck cylinder block that has at the water jacket of pad surfaces place opening.
The 1 common manufacturing as described below of top enclosed cylinder body.At first, provide a die cavity by mold, and will collapse certainly core and highly abrasion-resistant cylinder liner 4 (for example, FC cover, electroplate cover, MMC cover, based on the aluminium cover of high content silicon etc.) be arranged in this die cavity.Then, molten aluminum is cast in this die cavity, thereby it surrounds from collapsing core and cylinder liner 4.
Then, molten aluminum be cooled and be combined into solid-state, to make cylinder block main body (block body) 5.At this moment, cylinder liner 4 is inserted in the cylinder block main body 5.So just formed cylinder block 1, wherein cylinder liner 4 is arranged in the cylinder thorax 6.
Cylinder liner 4 gentle main body cylinder blocks 5 are made from a variety of materials, because if cylinder block main body 5 is cast by the aluminium based on high content silicon, then cylinder thorax 6 is tending towards having defect hole in its surface, and this often makes cylinder block 1 defectiveness.In addition, owing to the aluminium that is difficult to cut based on high content silicon, so cylinder block 1 needs high processing cost.
Afterwards, collapse the core collapse certainly.The space that will form when collapsing the core collapse certainly is as water jacket 2.As can be seen from Figure 58, form water jacket 2 by a part of wall of removing between the cylinder thorax 6 in cylinder block main body 5.
In the top enclosed cylinder body of so making 1, the to-and-fro motion in respective cylinder thorax 6 of piston (not shown).At this moment, remove the frictional heat that produces because of the sliding contact between the inner peripheral surface of the circumferential side wall of piston crown and cylinder liner 4 by introducing freezing mixture in the water jacket 2.
In recent years,, needed to reduce fuel quantity, promptly increased the mileage of automobile etc. in order to prevent global warming.A scheme that is used to address that need is to reduce the weight of internal-combustion engine (and thus as automobiles of final products), as disclosed in Japanese kokai publication sho patent disclosure No.59-3142, Japanese kokai publication sho patent disclosure No.58-74850, Japanese kokai publication sho patent disclosure No.59-79056 and Japanese kokai publication sho patent disclosure No.60-94230.
Can reduce the weight of top enclosed cylinder body 1 by the volume that reduces top enclosed cylinder body 1.Yet, be difficult to reduce the volume of top enclosed cylinder body 1, because need enough greatly between cylinder thorax 6, to hold water jacket 2 at the wall thickness between the cylinder thorax 6.This shortcoming is particularly evident in having the multicylinder engine of a plurality of cylinders.
Having the cylinder block main body 5 that reduces wall thickness can make by Hpdc (HPDC) or accurate die casting.Yet HPDC technology is owing to extremely difficult employing core is difficult to cast top enclosed cylinder body 1.Therefore, the HPDC process only is used to make open-deck cylinder block.
According to accurate die casting technology, if reduce the width of water jacket 2, then need to adopt have high strength and be easy to remove collapse core certainly.Yet this core that collapses certainly is difficult to make.
In this case, after casting cylinder block main body 5, cylinder liner 4 can be inserted in the cylinder thorax 6 in the cylinder block main body 5, and cylinder liner 4 gentle main body cylinder blocks 5 can be welded to one another.Yet strain takes place in the heat that this process produces in the time of can causing cylinder block main body 5 or cylinder liner 4 to be welded to one another because of them.In addition, if cylinder block main body 5 is made by HPDC technology, then be difficult to weld cylinder cover 4.
As mentioned above, when having the top enclosed cylinder body of little volume, manufacturing runs into all difficulties.
Summary of the invention
Overall purpose of the present invention is to provide the method for the top enclosed cylinder body that a kind of manufacturing has little volume.
Main purpose of the present invention is to provide a kind of friction stir welding method, and it is applicable to and connects cylinder block and cylinder liner.
Another object of the present invention is to provide a kind of cylinder liner, its easily friction stir welding be connected on the cylinder block.
According to one embodiment of the invention, a kind of cylinder liner is provided, its insertion is limited in the cylinder thorax of cylinder block main body of the cylinder block that is used for internal-combustion engine, comprising:
Hollow cylindrical body;
The major diameter part, its periphery wall radially outward from this hollow cylindrical body stretches out; And
Stepped part, it is arranged on the periphery wall of this major diameter part;
Wherein, the major diameter part of adjacent cylinder cover is piled up by described stepped part.
Described large-diameter portion branch is arranged in large-diameter portion in the pad surfaces of cylinder block main body of cylinder block and divides and arrange in the zone.
By said structure, gap between cylinder block main body and cylinder liner and the gap of change if desired between cylinder liner are as water jacket.Therefore, needn't in the cylinder block main body, be provided as the water jacket in a space.Therefore, can reduce the wall thickness between the cylinder thorax and the end wall thickness of cylinder block main body, thereby cause the little and lightweight top enclosed cylinder body of volume.
Because described stepped part is resisted against on the inner circle wall of cylinder thorax, so the gentle main body cylinder block of cylinder liner is not easy to be spaced apart from each other when they are stirred friction welding.In addition, prevented that softening material from flowing in the water jacket.
According to a preferred embodiment, this major diameter is partly closed the end of water jacket at the pad surfaces place.
According to another embodiment of the present invention, also provide a kind of cylinder liner, the cylinder thorax that it is used for inserting the cylinder block main body that is limited to the cylinder block that is used for internal-combustion engine comprises:
Hollow cylindrical body; With
The reduced diameter portion branch, the diameter of the inner circle wall by reducing this hollow cylindrical body provides this reduced diameter portion branch.
This reduced diameter portion on the cylinder liner inner circle wall divides the probe that allows friction stir welding tools against this reduced diameter portion branch, thereby make to be easy to carry out the friction stir welding process, so that the inner circle wall of the gentle main body cylinder block of periphery wall of cylinder liner engages each other reliably.So the cylinder block that constitutes has good rigidity.
This cylinder block can be configured to open-deck cylinder block.
According to still another embodiment of the invention, also provide a kind of cylinder liner, the cylinder thorax that it is used for inserting the cylinder block main body that is limited to the cylinder block that is used for internal-combustion engine comprises:
Hollow cylindrical body;
The reduced diameter portion branch, the diameter of the inner circle wall by reducing this hollow cylindrical body provides this reduced diameter portion branch; And
The major diameter part, its periphery wall radially outward from this hollow cylindrical body stretches out.
Divide and the major diameter part because cylinder liner has reduced diameter portion, so advantage that is provided by the reduced diameter portion branch and the advantage that is partly provided by major diameter are provided cylinder liner.
Cylinder liner should preferably have a stepped part, it is arranged on the periphery wall of major diameter part. because this stepped part is being held against the inner circle wall of cylinder thorax, therefore the gentle main body cylinder block of cylinder liner is not easy to be spaced apart from each other when they are stirred friction welding, thereby has prevented that softening material from flowing in the water jacket.
The reduced diameter portion branch should preferably have conical surface, and this surperficial diameter reduces in the taper mode.In this case, if friction stir welding tools tilts, then friction stir welding tools can be easily inserted in the cylinder liner and not interfere with cylinder block main body etc.The friction stir welding tools that is used for general purpose design can be used for making the gentle main body cylinder block of cylinder liner easily to engage each other.
According to still another embodiment of the invention, also provide a kind of friction stir welding method, it makes the inwall that is limited to the patchhole in first element engage with the outer wall that is inserted in this hollow that inserts in the hole second element by friction rabbling welding, comprise step:
On the inwall of second element width is set and reduces part, this part has the conical surface that the open end width away from patchhole reduces gradually;
The probe that makes friction stir welding tools makes friction stir welding tools move along this conical surface against this conical surface afterwards;
By the frictional heat that when rotating probe, produces, softening and stir the material of patchhole inwall in the material of the conical surface of second element and outer wall and first element, thus these materials of friction Stir; And
Remove probe from conical surface, remove width afterwards and reduce part.
According to said method, the probe of friction stir welding tools is held against the conical surface of second element so that the friction stir welding tools inclination.Therefore, friction stir welding tools keeps not interfering with first element.When friction stir welding tools when conical surface moves, it can easily engage the outer wall materials of the inner-wall material and second element of patchhole in first element.
Because having removed width reduces part, therefore the hollow region in second element has consistent width.
Preferably, remove probe from the inwall after separating of patchhole from conical surface, and will reduce part with width and remove because of the hole that removes that removes from conical surface that probe forms at probe.Do not exist owing to remove the hole, so engaging zones has good surface appearance and rigidity.
The preferred embodiment of first element is the cylinder block main body that is used for the cylinder block of internal-combustion engine.In this case, the cylinder thorax is as patchhole.The preferred exemplary of second element is a cylinder liner.
According to still another embodiment of the invention, also provide a kind of friction stir welding method, comprised step:
The friction stir welding tools embedding of rotating is had in the workpiece in zone;
Make in friction stir welding tools and the workpiece at least one motion so that friction stir welding tools move against the zone along this, be used for by the softening material of frictional heat against the zone, and by the material of friction stir welding tools stirring, to engage material against the zone against the zone; And
Engaging after the material in zone, remove friction stir welding tools from workpiece;
Wherein, will be processed as the hole because of the hole that removes that removes friction stir welding tools formation at least.
Owing to remove the processed pore-forming in hole, therefore in product, do not exist to remove the hole, so it have good surface appearance.In addition, do not remove the hole owing in product, do not exist, so this product have excellent mechanical intensity and rigidity.
Do not need packing to fill this and remove the hole.Because needn't the partial cutoff workpiece, so the shape of this workpiece needn't be very big.Therefore, reduced cost.
The preferred exemplary in described hole is a tapped hole.If workpiece is the cylinder block that is used for internal-combustion engine, then tapped hole can be the stud bolt hole.
If workpiece is the cylinder block that is used for internal-combustion engine, then this hole can be oilhole, positioning pin hole or dowel hole.
According to another embodiment of the present invention, a kind of friction stir welding method also is provided, its by the cylinder liner in the friction stir welding tools friction Stir cylinder block main body of rotating and the cylinder thorax that inserts the cylinder block main body against the zone, thereby make cylinder block, the method comprising the steps of:
Friction stir welding tools is embedded at least one of cylinder block main body and cylinder liner;
Along mobile friction stir welding tools against the zone, be used for by the softening material of frictional heat against the zone, and by the material of friction stir welding tools stirring against the zone, to engage against the zone; And
Engaging after the zone, from against the zone or cylinder liner remove friction stir welding tools;
Wherein, remove friction stir welding tools from the zone of water channel to be formed wherein, this water channel is communicated with water jacket between cylinder block main body and cylinder liner.
Because removing the hole is used as water channel, therefore in product, do not exist to remove the hole.Therefore, can be made into cylinder block with good appearance.Owing in cylinder block, do not exist to remove the hole, so cylinder block has excellent mechanical intensity and rigidity.
Do not need packing to fill this and remove the hole.Because needn't partial cutoff cylinder block main body, so the shape of this cylinder block main body needn't be very big.Therefore, reduced cost.
Preferably, described cylinder liner has hollow cylindrical part and major diameter part, this large-diameter portion branch is arranged in the layout area in the cylinder block main body, allowing to be formed on gap between hollow cylindrical part and the cylinder thorax as water jacket, and the pad surfaces of the described cylinder block main body of friction Stir and major diameter part are to be arranged on water channel at least in the major diameter part.In the major diameter part that water channel is arranged on cylinder liner, water jacket and water channel can easily keep communicating with each other.
According to still another embodiment of the invention, also provide a kind of and had the cylinder block main body of cylinder thorax and the method that the cylinder liner in this cylinder thorax of insertion is made cylinder block by friction Stir, the method comprising the steps of:
From the inner circle wall of cylinder liner the friction stir welding tools that rotates is embedded this cylinder liner, arrive the inner circle wall of cylinder thorax up to friction stir welding tools;
Mobile friction stir welding tools with the material of the gentle main body cylinder block of material by the softening cylinder liner of frictional heat, and stirs these materials by friction stir welding tools, thereby the gentle main body cylinder block of cylinder liner is engaged with each other; And
After the gentle main body cylinder block of cylinder liner is engaged with each other, remove friction stir welding tools;
Wherein, the position below the lower dead center of the piston ring on being assemblied in the circumferential side wall that inserts the piston in the cylinder thorax removes friction stir welding tools from cylinder liner.
Introduce the also position of the below of the chamber of fire fuel gasoline mixture therein, remove friction stir welding tools.Therefore, when operation of internal combustion engine, prevented from that this mixture from entering to remove in the hole.Therefore, kept proportions of ingredients, thereby internal-combustion engine can its pre-determined characteristics operation.
Preferably, the position below the lower dead center of piston skirt removes friction stir welding tools from cylinder liner.Preventing more easily that mixture from entering removes in the hole.
Preferably, this method also comprises a step, that is, the pad surfaces of friction Stir cylinder block main body and cylinder liner are at the end face at this pad surfaces place.Owing to increased the intensity that cylinder block main body and cylinder liner are engaged with each other, therefore further increased the rigidity of cylinder block.
According to still another embodiment of the invention, also provide a kind of and had the cylinder block main body of cylinder thorax and the method that the cylinder liner in this cylinder thorax of insertion is made cylinder block by friction Stir, this cylinder thorax has radially recessed stepped part and removes element with the friction stir welding tools that is installed on the pad surfaces, and the method comprising the steps of:
From the inner circle wall of cylinder liner the friction stir welding tools that rotates is embedded this cylinder liner, arrive the inner circle wall of cylinder thorax up to friction stir welding tools;
Mobile friction stir welding tools with the material of the gentle main body cylinder block of material by the softening cylinder liner of frictional heat, and stirs these materials by friction stir welding tools, thereby the gentle main body cylinder block of cylinder liner is engaged with each other; And
After the gentle main body cylinder block of cylinder liner is engaged with each other, remove friction stir welding tools;
Wherein, move to from the inner circle wall of cylinder liner after friction stir welding tools removes element, remove element from friction stir welding tools and remove friction stir welding tools at friction stir welding tools.
Removed friction stir welding tools because remove element, do not removed the hole so in as the cylinder block of final products, do not exist from friction stir welding tools.Therefore, cylinder block has good surface appearance.Owing in cylinder block, do not exist to remove the hole, so cylinder block has excellent mechanical intensity and rigidity.
In addition, do not remove the hole, therefore reduced cost owing to do not need packing to fill.
When cylinder liner was inserted in the cylinder thorax, an end of cylinder liner can be stretched out from the cylinder thorax.The periphery wall of this external part can be held against the inwall that friction stir welding tools removes element.
After the gentle main body cylinder block of cylinder liner is engaged with each other, friction stir welding tools is moved to external part, and remove element by this end from friction stir welding tools and remove.Then, align in the position with the upper-end surface of cylinder liner by pad surfaces from its end that has removed friction stir welding tools.Therefore, cylinder block does not have the hole of removing, and has good surface appearance, mechanical strength and rigidity.
Preferably, this method also comprises the pad surfaces of friction Stir cylinder block main body and the cylinder liner end face at this pad surfaces place.Owing to increased the intensity that cylinder block main body and cylinder liner are engaged with each other, therefore further increased the rigidity of cylinder block.
According to still another embodiment of the invention, also provide a kind of manufacturing to be used for the method for the cylinder liner of top enclosed cylinder body, the closing element that this cylinder liner has the hollow cylindrical element and engages with the periphery wall of this hollow cylindrical element, wherein, when cylinder liner is inserted in the cylinder thorax that is defined in the cylinder block main body, this closing element is closed in the opening of the water jacket at pad surfaces place in the cylinder block main body, and the method comprising the steps of:
Use anchor clamps, these anchor clamps have the hollow cylindrical element can be inserted into wherein first insert unit and closing element can insert wherein second insert the unit, the hollow cylindrical element is inserted in this first insertion unit, and closing element is inserted in this second insertion unit; And
Engage hollow cylindrical element and closing element by friction Stir.
Can be by the simple procedure that utilizes friction Stir that hollow cylindrical element and closing element are engaged with each other, and easily make the cylinder liner that is used for top enclosed cylinder body.
Preferably, the hollow cylindrical element has support level portion on its periphery wall, this support level portion exposes in the time of in the hollow cylindrical element being inserted into the first insertion unit of anchor clamps, closing element is arranged in this support level portion, and friction Stir hollow cylindrical element and closing element.Therefore, when friction Stir hollow cylindrical element and closing element, closing element is supported rigidly by support level portion, engages reliably to allow hollow cylindrical element and closing element.
According to another embodiment of the present invention, a kind of method of making top enclosed cylinder body also is provided, the closing element of end that this cylinder block has the cylinder block main body, be inserted into hollow cylindrical element in the cylinder thorax that is defined in this cylinder block main body, be arranged on the water jacket between cylinder block main body and the hollow cylindrical element and be closed in the pad surfaces place water jacket of cylinder block main body, the method comprising the steps of:
By friction stir welding hollow cylindrical element and closing element are engaged with each other; With
By friction stir welding cylinder block main body and closing element are engaged with each other.
In this embodiment, cylinder block main body and hollow cylindrical element are engaged with each other by closing element.Therefore, the opening at the pad surfaces place that is arranged on the water jacket between cylinder block main body and the hollow cylindrical element is closed by this closing element, and cylinder block main body and closing element and hollow cylindrical element and closing element can easily engage by friction stir welding.
Can reduce the wall thickness between the cylinder thorax, and can adopt HPDC technology to make cylinder block with little wall thickness.Therefore, but manufacturing dimension is little and lightweight top enclosed cylinder body.
Can have the hollow cylindrical element by use and can insert first inserting unit and closing element and can insert wherein second anchor clamps that insert the unit, friction Stir hollow cylindrical element and closing element wherein.
Particularly, the hollow cylindrical element is inserted in this first insertion unit, closing element is inserted in this second insertion unit, and the upper end of the periphery wall of the inner periphery of closing element and hollow cylindrical element engages by friction stir welding afterwards.After the hollow cylindrical element that closing element is engaged is inserted in the cylinder thorax of cylinder block main body, friction Stir cylinder block main body and closing element.
Preferably, the hollow cylindrical element has support level portion on its periphery wall, and this support level portion exposes in the time of in the hollow cylindrical element being inserted into the first insertion unit of anchor clamps.When closing element being arranged in this support level portion, and when friction Stir hollow cylindrical element and closing element, because closing element supports securely by support level portion, so hollow cylindrical element and closing element engage reliably.
Perhaps, at least one had support level portion in the periphery wall of cylinder block main body and hollow cylindrical element, closing element can be arranged in this support level portion, but friction Stir hollow cylindrical element and closing element, but and friction Stir cylinder block main body and closing element.
At first friction Stir hollow cylindrical element and closing element, perhaps at first friction Stir cylinder block main body and closing element.
According to still another embodiment of the invention, also provide a kind of manufacturing to be used for the method for the cylinder liner of top enclosed cylinder body, the closing element that this cylinder liner has the hollow cylindrical element and engages with the periphery wall of this hollow cylindrical element, wherein when cylinder liner being inserted in the cylinder thorax that is defined in the cylinder block main body, water jacket in the closing element shifter cylinder phosphor bodies is at the opening at pad surfaces place, and the method comprising the steps of:
Use has first and inserts the anchor clamps that unit, second inserts unit and the 3rd insertion unit, the hollow cylindrical element is inserted in this first insertion unit, closing element is inserted in this second insertion unit, friction stir welding tools is removed element be inserted in the 3rd insertion unit, by friction stir welding hollow cylindrical element and closing element are engaged afterwards; And
After friction stir welding is finished, remove element from friction stir welding tools and remove friction stir welding tools.
In this embodiment, can be by the simple procedure that utilizes friction stir welding that closing element and hollow cylindrical element are engaged with each other, and easily make the cylinder liner that is used for top enclosed cylinder body.
Because having the 3rd, described anchor clamps insert the unit, and after friction Stir hollow cylindrical element and closing element, friction stir welding tools from be inserted in the 3rd insertion unit removes element and removes friction stir welding tools, therefore can be made into the cylinder liner that is used for top enclosed cylinder body that does not remove hole (can form this and remove the hole when removing friction stir welding tools).The cylinder liner that is used for top enclosed cylinder body that does not remove the hole shows favorable rigidity.
The hollow cylindrical element has support level portion on its periphery wall, this support level portion exposes in the time of in the hollow cylindrical element being inserted into the first insertion unit of anchor clamps, closing element can be arranged in this support level portion, and friction Stir hollow cylindrical element and closing element. when friction Stir hollow cylindrical element and closing element, because closing element supports securely by this support level portion, so cylinder liner and closing element engage reliably.
If make the cylinder liner that is used for multi-cylinder top enclosed cylinder body, then can engage a plurality of hollow cylindrical elements in advance.
According to still another embodiment of the invention, also provide a kind of method of making top enclosed cylinder body, wherein formed water jacket in the gap between cylinder block main body and cylinder liner, and closed the end of this water jacket at the pad surfaces place, the method comprising the steps of:
Make the cylinder block main body with cylinder thorax, this cylinder thorax has radially recessed stepped part and is used for arranging the layout area of the end face of cylinder liner thereon;
Cylinder liner is inserted in the cylinder thorax, the end face of cylinder liner is arranged on the described layout area, and between the periphery wall of cylinder liner and stepped part, form water jacket; And
The inner circle wall of friction Stir cylinder liner and cylinder thorax is to make cylinder block.
Particularly, the cylinder thorax that cylinder liner is inserted wherein has this stepped part, and the diameter of this stepped part increases with one heart, and the gap between this stepped part and cylinder liner is as water jacket.Owing to the space needn't be set with as water jacket in the cylinder block main body as traditional cylinder block, so the cylinder block main body do not need such zone, that is, cylinder liner can be inserted in this zone when casting cylinder block main body.
Reduced the excision amount of the gentle main body cylinder block of cylinder liner widely.As a result, therefore the cost of material that has reduced top enclosed cylinder body has also reduced its manufacture cost.
In addition, according to the present invention, needn't in the cylinder block main body, be provided with space as water jacket.Therefore, can be made into and have little wall thickness and lightweight top enclosed cylinder body.
In addition, because cylinder block main body and cylinder liner engage by friction stir welding, so they engage each other securely, also are like this even they are made from a variety of materials.As a result, made top enclosed cylinder body has excellent mechanical intensity and rigidity.
Preferably, the cylinder liner of inserting in the cylinder thorax should preferably be carried out friction stir welding in end face and this pad surfaces at the pad surfaces place of cylinder block main body.Owing to increased the intensity that cylinder block main body and cylinder liner are engaged with each other, therefore further increased the rigidity of top enclosed cylinder body.
If top enclosed cylinder body is the cylinder block of multi-cylinder, then cylinder liner preferably has the plane on its outer circumferential face, and adjacent cylinder liner preferably remains by this plane and abuts against each other in the cylinder thorax.Owing to reduced the distance between adjacent cylinder cover, therefore can be made into and have littler wall thickness and the lighter top enclosed cylinder body of weight.
Can in this plane, form the recess that radially is recessed into and is used as water jacket from cylinder liner.By this structure, the cooling effectiveness of top enclosed cylinder body can be increased, and the distance between the adjacent cylinder cover needn't be increased in, promptly needn't increase wall thickness.
Description of drawings
Fig. 1 is the vertical sectional view according to the cylinder block with cylinder liner of first embodiment of the invention;
The planimetric map that Fig. 2 is the cylinder block shown in Fig. 1 when its pad surfaces is seen;
Fig. 3 is the vertical sectional view of the cylinder block main body of the cylinder block shown in Fig. 1;
The planimetric map that Fig. 4 is the cylinder block main body shown in Fig. 3 when its pad surfaces is seen;
Fig. 5 is the stereogram according to this first embodiment's cylinder liner;
Fig. 6 is that the line VI-VI along Fig. 5 cuts open the sectional view of getting;
Fig. 7 is a partial vertical sectional view, represents that the periphery wall friction stir welding of the cylinder liner shown in Fig. 5 wherein is connected on the mode on the inner circle wall of cylinder thorax;
Fig. 8 is a partial vertical sectional view, represents that the probe of friction stir welding tools wherein moves apart the mode of the inner circle wall of intercommunicating pore;
Fig. 9 is the planimetric map of the cylinder block main body when pad surfaces is seen, represents the direction that friction stir welding tools wherein moves, to engage the gentle main body cylinder block of major diameter part;
Figure 10 is the local vertical sectional view of amplifying, and represents wherein the gentle main body cylinder block of the major diameter part mode of friction Stir each other;
Figure 11 is the planimetric map of the cylinder block main body when pad surfaces is seen, represents the direction that friction stir welding tools wherein moves, so that major diameter partly is engaged with each other;
Figure 12 is the vertical sectional view with cylinder liner of another shape;
Figure 13 is the vertical sectional view with cylinder block of cylinder liner shown in Figure 12;
Figure 14 is the local vertical sectional view of amplifying, and expression is the gentle main body cylinder block of the major diameter part mode of friction Stir each other in cylinder block shown in Figure 13 wherein;
Figure 15 is a partial vertical sectional view, and expression does not wherein have the periphery wall friction stir welding of the cylinder liner that reduced diameter portion divides to be connected on mode on the inner circle wall of cylinder thorax;
Figure 16 is the stereogram that dissects of part, is illustrated in to remove hole and the relation of the position between the piston skirt of lower dead center in the cylinder liner, and the probe of friction stir welding tools removes the hole from this and removes;
Figure 17 is the stereogram that dissects of part, is illustrated in to remove hole and the relation of the position between the piston ring of lower dead center in the cylinder liner, and the probe of friction stir welding tools removes the hole from this and removes;
Figure 18 is the vertical sectional view with cylinder liner of another shape;
Figure 19 is the vertical sectional view with cylinder liner of another shape;
Figure 20 is the planimetric map of the cylinder block main body when pad surfaces is seen, represents the direction that friction stir welding tools wherein moves, so that the major diameter part engages with the cylinder block main body;
Figure 21 is that the line XXI-XXI along Figure 20 cuts open the sectional view of getting;
Figure 22 is the planimetric map of the cylinder block main body when pad surfaces is seen, makes this cylinder block when friction Stir cylinder block main body and cylinder liner;
Figure 23 is that vertical sectional view is amplified in the part of cylinder block shown in Figure 22;
Figure 24 is the local vertical sectional view of amplifying, and expression wherein removes the mode of friction stir welding tools from the junction point between major diameter part and the pad surfaces;
Figure 25 is the local vertical sectional view of amplifying, and expression is by the water channel that removes the bending that the hole forms shown in Figure 24;
Figure 26 is the view sub-anatomy by the cylinder block of making according to the manufacture method of second embodiment of the invention;
Figure 27 is a vertical sectional view, represents wherein cylinder liner to be inserted in the intercommunicating pore in the cylinder block main body and the mode that embeds the probe of friction stir welding tools;
Figure 28 is the local vertical sectional view of amplifying, and expression wherein after carrying out the friction stir welding process, moves to the mode that friction stir welding tools removes element with friction stir welding tools;
Figure 29 is the local vertical sectional view of amplifying, and represents the pad surfaces of friction Stir cylinder block main body wherein and near the mode of the end of the cylinder liner of this pad surfaces;
Figure 30 is the local vertical sectional view of amplifying, and expression wherein after carrying out the friction stir welding process, moves to friction stir welding tools the mode of stretching out and removed by friction stir welding tools the end of element encompasses from a hole;
Figure 31 is the local vertical sectional view of amplifying, and expression is wherein removing from friction stir welding tools by described end after element removes friction stir welding tools, excises the mode of this end;
Figure 32 is to the stereogram of its execution according to the cylinder liner of the friction stir welding method of second embodiment of the invention;
Figure 33 is to the stereogram of its execution according to the closing element of the friction stir welding method of second embodiment of the invention;
Figure 34 is the stereogram that is used for the anchor clamps of friction Stir cylinder liner and closing element;
Figure 35 is a vertical sectional view, and expression wherein uses anchor clamps shown in Figure 34 to engage the mode of cylinder liner and closing element by friction Stir;
Figure 36 is the stereogram of the clutch collar assembly made when cylinder liner and closing element are bonded together;
Figure 37 is the stereogram of expression with the mode in the intercommunicating pore of the insertion of the clutch collar assembly shown in Figure 36 cylinder block main body;
Figure 38 is the planimetric map of the cylinder block main body when pad surfaces is seen, represents that wherein friction stir welding tools moves so that the direction that the outward edge of closing element engages with the cylinder block main body;
Figure 39 is the local vertical sectional view of amplifying, the mode of the gentle main body cylinder block of expression friction Stir closing element;
Figure 40 is a vertical sectional view, and expression wherein uses the anchor clamps shown in Fig. 5 to come friction Stir cylinder liner and closing element to have the mode of the cylinder block of another shape with manufacturing;
Figure 41 is to the stereogram of its execution according to the cylinder liner of the friction stir welding method of second embodiment of the invention;
Figure 42 is the local vertical sectional view of amplifying, and expression wherein uses anchor clamps shown in Figure 34 to fetch the mode that engages cylinder liner and closing element by friction stir welding;
Figure 43 has the stereogram that friction stir welding tools removes the anchor clamps of element;
Figure 44 is a vertical sectional view, and expression wherein uses anchor clamps shown in Figure 43 to fetch the mode that engages cylinder liner and closing element by friction stir welding;
Figure 45 has the stereogram that a plurality of friction stir welding tools remove the anchor clamps of element;
Figure 46 is the local vertical sectional view of amplifying, the mode of expression friction Stir cylinder liner and closing element;
Figure 47 is the local vertical sectional view of amplifying, the mode of expression friction Stir cylinder liner and closing element;
Figure 48 is the local vertical sectional view of amplifying, the mode of expression friction Stir cylinder liner and closing element;
Figure 49 is the stereogram that comprises the closing element of three ring-type elements;
Figure 50 is the stereogram of the linear conjugative component of three cylinder liner;
Figure 51 is the stereogram of the cylinder block main body of top enclosed cylinder body;
Figure 52 is the stereogram of the cylinder liner of top enclosed cylinder body;
Figure 53 is the vertical sectional view of the cylinder liner in the hole that is inserted in the cylinder block main body;
Figure 54 is a vertical sectional view, and the probe of expression friction stir welding tool embeds the mode in the cylinder liner;
Figure 55 is the local vertical sectional view of amplifying, the mode of the end of the pad surfaces of expression friction Stir cylinder block main body and the cylinder liner of close this pad surfaces;
Figure 56 is the planimetric map of the cylinder block main body when pad surfaces is seen, represents that friction stir welding tools wherein moves so that the direction that engages with cylinder block main body (pad surfaces) near the end face of the cylinder liner of pad surfaces;
Figure 57 is the planimetric map of the cylinder block main body when pad surfaces is seen, represents that friction stir welding tools wherein moves so that the direction that is engaged with each other near the end face of the cylinder liner of pad surfaces; And
Figure 58 is the vertical sectional view of general multi-cylinder top enclosed cylinder body.
Embodiment
The top enclosed cylinder body of making when joining the cylinder block main body to when cylinder liner and be used for cylinder liner is bonded on friction stir welding method on the cylinder block main body describes the preferred embodiment according to cylinder liner of the present invention in detail below with reference to accompanying drawings.
At first, below first embodiment will be described.
Fig. 1 is the vertical sectional view according to this first embodiment's cylinder block 10, and Fig. 2 is the planimetric map of cylinder block 10 when seeing as the pad surfaces 12 of its upper-end surface.Cylinder block 10 comprises: made of aluminum and have the cylinder block main body 18 of intercommunicating pore (cylinder thorax) 16, this intercommunicating pore 16 comprises first annular notch 13 and second annular notch 14; Cylinder liner 20a to 20c, they are inserted in the intercommunicating pore 16 and are bonded on the cylinder block main body 18; And water jacket 22, be used for the freezing mixture of cooling air cylinder sleeve 20a to 20c to its supply.In Fig. 2, reference character 24a to 24h represents to be used for the stud bolt hole that bolt (it is used to cylinder block 10 is combined with other parts to constitute internal-combustion engine) therefrom passes through.
As shown in Figure 1, be bonded on the inner circle wall of intercommunicating pore 16 towards wall 26a, the 26b that pad surfaces 12 is stretched out.The inner circle wall of intercommunicating pore 16 and wall 26a, 26b have the 28a to 28c of ring-shaped step portion, and cylinder liner 20a to 20c has the corresponding lower end that is arranged on the 28a to 28c of this ring-shaped step portion.Cylinder liner 20a to 20c is arranged in by them that the 28a to 28c of ring-shaped step portion goes up corresponding lower end and in position supported.
At the recess 30 that the opening of the intercommunicating pore 16 at pad surfaces 12 places of cylinder block main body 18 has three ring-shaped step portion shapes, these three stepped part connect continuously at their place, peripheral edge.
Cylinder liner 20a to 20c is made by the aluminium based on high content silicon, and has corresponding hollow cylindrical part 34a to 34c respectively and be arranged on corresponding major diameter part 36a to 36c on the upper end of hollow cylindrical part 34a to 34c.Cylinder liner 20a to 20c has the corresponding lower end that is arranged on the 28a to 28c of ring-shaped step portion.As described later, hollow cylindrical part 34a to 34c is bonded on the inner circle wall of first annular notch 13.
As shown in Figure 1, major diameter part 36a to 36c is arranged in the recess 30, thereby is closed in the end of pad surfaces 12 place's water jackets 22 by major diameter part 36a to 36c.Therefore, cylinder block 10 is a top enclosed cylinder body.
The circumferential side wall of the major diameter part 36a to 36c of cylinder liner 20a to 20c is partly removed in their bottom, so that corresponding annular stepped part 38a to 38c to be provided.The corresponding circumferential side wall of the 38a to 38c of ring-shaped step portion is being held against the inner circle wall of second annular notch 14 of intercommunicating pore 16.
The major diameter part 36b of cylinder liner 20b is partly removed linearly, to expose the ring-shaped step 38b of portion.On the 38b of ring-shaped step portion that the major diameter part 36a of cylinder liner 20a, 20c, 36c are arranged in exposure.Simultaneously, the 38a of ring-shaped step portion, 38c are also removed by part linearly, interfere between the 38a of ring-shaped step portion, 38c and the 38b of ring-shaped step portion avoiding.
The corresponding periphery wall of the hollow cylindrical part 34a to 34c of cylinder liner 20a to 20c is bonded on the inner circle wall and wall 26a, 26b of first annular notch 13.The major diameter part 36a to 36c that is arranged in the cylinder liner 20a to 20c in the recess 30 has the outward edge on the pad surfaces 12 that is bonded on cylinder block main body 18.The major diameter part 36b of cylinder liner 20b joins on major diameter part 36a, the 36c of cylinder liner 20a, 20c on the 38b of ring-shaped step portion that is arranged in major diameter part 36b.Above-mentioned wall and major diameter partly engage by friction Stir, as described later.
In Fig. 1 and Fig. 2, yet the major diameter part 36a to 36c of cylinder block main body 18 and cylinder liner 20a to 20c is shown as with the separatrix and clearly separates. in fact, these elements 18,36a to 36c are by the friction Stir seamless combination. therefore, element 18,36a to 36c one engage, and do not have visible separatrix between them. and this all is suitable in this specification.
Cylinder block 10 can as described belowly be made.
At first, cast the cylinder block main body 18 shown in Fig. 3 and Fig. 4 by casting process.Cylinder block main body 18 has intercommunicating pore 16 and the water jacket 22 that maintenance communicates with each other, and intercommunicating pore 16 has first annular notch 13 and second annular notch 14, and wall 26a, 26b stretch in the intercommunicating pore 16.The inner circle wall of intercommunicating pore 16 and wall 26a, 26b have the 28a to 28c of ring-shaped step portion, and have recess 30 at the opening of pad surfaces 12 place's intercommunicating pores 16.
As can be seen from Figure 4, after just casting cylinder block main body 18, stud bolt hole 24a to 24h is not set in cylinder block main body 18.
As shown in Fig. 5 and Fig. 6, make cylinder liner 20a to 20c.Cylinder liner 20a to 20c has hollow cylindrical part 34a to 34c, the reduced diameter portion that each hollow cylindrical part all has the inner circle wall that reduced by near the tapered diameter the lower end to be provided divides 44, and the major diameter part 36a to 36c on the end of hollow cylindrical part 34a to 34c.Reduced diameter portion divides 44 to have conical surface 46, and the diameter of this conical surface reduces on the direction away from major diameter part 36a to 36c gradually along the inner circle wall of cylinder liner 20a to 20c.
Can pass through already known processes (for example, extrusion die casting technology, casting technique etc.) and make the cylinder liner 20a to 20c of such shaping.
By the bottom of machining process, so that the 38a to 38c of ring-shaped step portion to be set below major diameter part 36a to 36c along the circumferential side wall that circumferentially excises major diameter part 36a to 36c.Afterwards, remove to partial linear major diameter part 36b, to expose the ring-shaped step 38b of portion.Remove to same partial linear the 38a of ring-shaped step portion, 38c.
Then, with in the intercommunicating pore 16 in cylinder liner 20a to the 20c insertion cylinder block main body 18.The cylinder liner 20a to 20c that inserts is arranged in their corresponding lower end on the 28a to 28c of ring-shaped step portion, and their major diameter part 36a to 36c is arranged in the recess 30, and major diameter part 36b is arranged on the 38b of ring-shaped step portion.Because part has been removed the 38a of ring-shaped step portion, 38c, so the 38a of ring-shaped step portion, 38c can not interfere with the 38b of ring-shaped step portion.The circumferential side wall of the 38a to 38c of ring-shaped step portion is being held against the inner circle wall of second annular notch 14.
Because cylinder liner 20a to 20c inserts in the intercommunicating pore 16, therefore between the inner circle wall of second annular notch 14 and cylinder liner 20a to 20c, form the gap.This gap is communicated with the gap that is limited to the gap between cylinder liner 20a, the 20b and be limited between cylinder liner 20b, the 20c, thereby water jacket 22 is provided.
Therefore according to this first embodiment, when being inserted into cylinder liner 20a to 20c in the intercommunicating pore 16, formed water jacket 22.Therefore, needn't in cylinder block main body 18, water jacket be set discretely with intercommunicating pore 16.
Therefore, collapse the die cavity that core needn't be arranged in the mold that is used for casting cylinder block main body 18 certainly.According to this embodiment, removed to make certainly and collapsed any time-consuming process of core, and save the manufacture cost that collapses core certainly.Therefore reduced the manufacture cost of cylinder block 10.
Then, the periphery wall of the inner circle wall of intercommunicating pore 16 and wall 26a, 26b and cylinder liner 20a to 20c is engaged with each other by friction Stir.
As shown in Figure 7, friction stir welding tools 50 comprises cylindrical rotating component 52 and probe 54, and the diameter of this probe is less than the diameter of rotating component 52 and have conical tip.Friction stir welding tools 50 inserts among the cylinder liner 20a obliquely with respect to the longitudinal axis of cylinder liner 20a, up to probe 54 against conical surface 46.
Then, rotating component 52 is rotated so that probe 54 slides against conical surface 46, thereby produce the zone that by probe 54 contacted of frictional heat with softening conical surface 46. the result, the tip of probe 54 arrives such zone, wherein cylinder liner 20a abuts against the inner circle wall of intercommunicating pore 16. and in this zone, the inner circle wall of the periphery wall of cylinder liner 20a and intercommunicating pore 16 is softened by frictional heat.
When friction stir welding tools 50 when conical surface 46 rotates, softening material is stirred and plastic flow by probe 54.Then, Ruan Hua material when it removes probe 54, be combined into solid-state.When friction stir welding tools 50 rotates, repeat above-mentioned phenomenon continuously, up to the inner circle wall of the periphery wall of cylinder liner 20a and first annular notch 13 or wall 26a each other one engage.
Afterwards, as shown in Figure 8, probe 54 moves apart the inner circle wall of first annular notch 13, divides 44 to remove friction stir welding tools 50 from reduced diameter portion then.When dividing 44 to remove friction stir welding tools 50 from reduced diameter portion, it divides to leave in 44 in reduced diameter portion and removes the hole.
On remaining cylinder liner 20b, 20c, carry out identical as mentioned above process.
The reduced diameter portion that is arranged on the inner circle wall of each cylinder liner 20a to 20c divides 44 to allow the probe 54 of friction stir welding tools 50 to divide 44 conical surface 46 against reduced diameter portion.Therefore, can easily carry out the friction stir welding process.
Then, the pad surfaces 12 of the major diameter part 36a to 36c of cylinder liner 20a to 20c and cylinder block main body 18 also is engaged with each other by friction Stir.Particularly, the rotating component 52 of friction stir welding tools 50 is rotated, so that probe 54 keeps sliding contact with major diameter part 36a to 36c and pad surfaces 12, thus the material of the gentle main body cylinder block 18 of material of friction Stir major diameter part 36a to 36c.At this moment, friction stir welding tools 50 is along being moved by the direction shown in the arrow A among Fig. 9, so that major diameter part 36a to 36c is engaged with each other with pad surfaces 12 (cylinder block main body 18).
As among Figure 10 with shown in the ratio of amplifying, major diameter part 36a to 36c is supported rigidly by being arranged in the recess 30.Because the circumferential side wall of the 38a to 38c of ring-shaped step portion is held against the inner circle wall of intercommunicating pore 16, so major diameter part 36a to 36c is not easy to remove from cylinder block main body 18 owing to the wedging action of the 38a to 38c of ring-shaped step portion.Therefore, under the situation that need not to be used to prevent the anchor clamps that cylinder block main body 18 and major diameter part 36a to 36c are separated from one another, can easily carry out the friction stir welding process.
Owing to do not have the softening major diameter part 36a to 36c that closes water jacket 22, therefore do not have softener material to flow in the water jacket 22.
Then, with major diameter part 36a, 36b friction Stir each other, and with major diameter part 36b, 36c friction Stir each other.At this moment, friction stir welding tools 50 is along being moved by the arrow B among Figure 11, the direction shown in the C.Owing on the major diameter part 36a of cylinder liner 20a, 20c, the 38b of ring-shaped step portion that 36b is arranged in cylinder liner 20b, therefore also can easily carry out the friction stir welding process.
By aforesaid operations, the gentle main body cylinder block 18 of cylinder liner 20a to 20c one each other engages, and cylinder liner 20a to 20c also each other one engage.
Then, the reduced diameter portion of removing cylinder liner 20a to 20c divides 44.Particularly, the interior perimeter surface of cylinder liner 20a to 20c is by grindings such as drill bits, thereby makes equal diameters.Piston can to-and-fro motion in cylinder liner 20a to 20c like this.
When removing reduced diameter portion when dividing 44, also to remove reduced diameter portion and divided 44 the zone that removes the hole that comprises, probe 54 removes the hole from this and removes.Therefore, in the inner circle wall of hollow cylindrical part 34a to 34c, do not exist and remove the hole.
When the gentle main body cylinder block of cylinder liner 20a to 20c 18 by friction Stir and cylinder liner 20a to 20c each other during also by friction Stir each other, element 18,20a to 20c one each other engage.The cylinder block 10 of Gou Chenging has favorable rigidity like this.
The friction stir welding process allows element relatively easily to be engaged with each other, and also is like this even these elements are made by the material that is difficult to weld.For example, even cylinder block main body 18 is made by HPDC, cylinder liner 20a to 20c also can easily be bonded on the cylinder block main body 18.Therefore, can construct cylinder block 10 with less wall thickness.
Among the 24a to 24h of stud bolt hole any can be processed in the hole that removes that forms when removing probe 54.For example, can will be processed into stud bolt hole 24e (see figure 2) in the hole Y1 (see figure 9) that removes that the gentle main body cylinder block 18 of major diameter part 36a to 36c is made after the friction Stir each other.Can will be processed into stud bolt hole 24f (see figure 2), and can will be processed into stud bolt hole 24g (see figure 2) at the hole Y3 (seeing Figure 11) that removes that major diameter part 36b, 36c are made after the friction Stir each other at the hole Y2 (seeing Figure 11) that removes that major diameter part 36a, 36b are made after the friction Stir each other.By this way, can prevent to exist in and remove the hole that removes of making after the probe 54.
Can be formed for the hole in other application, rather than the stud bolt hole.For example, this hole can be oilhole, be used to make the positioning pin hole that positioning fixture (it is used for positioning cylinder body 10 when processing cylinder block 10) therefrom passes through or be used to dowel hole that pin (it is used to make cylinder block 10 locate with cylinder head and aligns) is therefrom passed through.Certainly, can form not only as the stud bolt hole but also as the hole of dowel hole.
For cylinder block 10,, be used as water jacket 22 in the gap between annular notch 28 and the cylinder liner 20a to 20c and in the gap that adjacent cylinder is overlapped between the 20a to 20c as can be seen from Figure 1.Therefore, the flow through freezing mixture of water jacket 22 keeps directly contacting with cylinder liner 20a to 20c.
In other words, needn't in the cylinder block main body 5 in the general top enclosed cylinder body 1 (seeing Figure 58), be set to the water jacket 2 in a space.Owing to reduced the wall thickness of cylinder block main body 18, therefore can reduce the volume of cylinder block 10.Therefore, can reduce the size and the volume of cylinder block 10.
The freezing mixture of water jacket 22 keeps directly contacting with cylinder liner 20a to 20c owing to flow through, so cooling air cylinder sleeve 20a to 20c effectively.When comprising the operation of internal combustion engine of cylinder block 10, prevented the heat that the temperature reason internal-combustion engine of cylinder liner 20a to 20c produces and excessively raise.
Because cylinder liner 20a to 20c is made by the aluminium based on high content silicon of highly abrasion-resistant, cylinder block 10 is durable.Because cylinder block main body 18 is made by cheap aluminium, therefore can not increase the manufacture cost of cylinder block 10.
In the present embodiment, cylinder liner 20a to 20c has the 38a to 38c of ring-shaped step portion, and the 38b of ring-shaped step portion of cylinder liner 20b partly exposes.Yet as shown in figure 12, cylinder liner 20a to 20c can only have major diameter part 36a to 36c and reduced diameter portion divides 44.In this case, as shown in figure 13, the circumferential side wall of major diameter part 36a to 36c can keep abutting against each other.In Figure 13, the reduced diameter portion of cylinder liner 20a to 20c divides 44 to be removed.As among Figure 14 with shown in the ratio of amplifying because major diameter part 36a to 36c is arranged and is supported in the recess 30 in the cylinder block main body 18, therefore can easily carry out the friction stir welding process.
As shown in figure 15, cylinder liner 20a to 20c can only have major diameter part 36a to 36c and the 38a to 38c of ring-shaped step portion.In this case, can use friction stir welding tools 66, it comprises first rotating component 60, be installed on the circumferential side wall of this first rotating component 60 and can be independent of second rotating component 62 that this first rotating component 60 rotates and the far-end that is installed in this second rotating component 62 on probe 64.When first rotating component 60 and second rotating component 62 rotated simultaneously, the inner circle wall of the periphery wall of cylinder liner 20a to 20c and intercommunicating pore 16 was engaged with each other.Cylinder liner 20a to 20c can be configured to not have the 38a to 38c of ring-shaped step portion.
In this case, probe 64 be held against the cylinder liner inner circle wall, the location below the lower dead center in the skirt section 82 of piston 80, as shown in figure 16, first rotating component 60 (seeing Figure 15) is rotated so that the inner circle wall of the periphery wall of cylinder liner 20a to 20c and intercommunicating pore 16 is engaged with each other.
After the friction stir welding process, remove probe 64 from the inner circle wall of cylinder liner, remove hole Z1 (seeing Figure 16) thereby in this inner circle wall, leave.
With the cylinder block and particular element (for example, the piston 80 shown in Figure 16) combination of making like this, so that the internal-combustion engine (not shown) to be provided.Each piston 80 that inserts respectively among the cylinder liner 20a to 20c all has skirt section 82 in its lower end, and this skirt section 82 is compared long slightly with its other parts.Piston 80 also has the pin-and-hole 84 that is limited in its circumferential side wall, and is assemblied in three piston ring 86a to 86c on the part of pin-and-hole 84 tops of piston 80.In Figure 16, demonstrate piston 80 and be positioned at lower dead center.
When this operation of internal combustion engine, air-fuel mixture to be introduced in the chamber 88, this chamber is formed between the interior perimeter surface of the upper-end surface of the piston 80 at lower dead center place and each cylinder liner 20a to 20c.Piston 80 rises with the pressurized air fuel mixture, lights this air-fuel mixture afterwards.This air-fuel mixture expands, to reduce piston 80.Therefore, piston 80 to-and-fro motion vertically in corresponding cylinder liner 20a to 20c, and the inner circle wall of the skirt section 82 of piston 80 and cylinder liner 20a to 20c keeps sliding contact.
As shown in figure 16, even when being positioned at the lower dead center place, remove the below that hole Z1 also is positioned at this lower dead center in the skirt section 82 of piston 80.Prevented that by the piston ring 86a to 86c on the peripheral wall that is assemblied in piston 80 air-fuel mixture from leaking from chamber 88.Therefore, air-fuel mixture can't enter and remove among the Z1 of hole.
Owing to below the lower dead center in the skirt section 82 of piston 80, remove the probe 64 of friction stir welding tools 66, remove hole Z1 although therefore leave, prevented from also that air-fuel mixture from entering to remove among the Z1 of hole.Because the air fuel ratio in the chamber 88 is maintained in the suitable scope, so internal-combustion engine can be with its predetermined capability operation.
As long as probe 64 is in the below of the lower dead center of foot piston ring 86a, just can it be removed from the position above the lower dead center in skirt section 82.In this case, as shown in figure 17, skirt section 82 can keep sliding contact with the part that does not remove hole Z2 of cylinder liner.In order to prevent that space and water jacket 22 on the inner circle wall of cylinder liner 20a to 20c from communicating with each other, the periphery wall of friction Stir cylinder liner 20a to 20c and first annular notch 13.Remove probe 54 by first annular notch 13 and cylinder liner 20a to 20c.
Major diameter part 36a to 36c must not be arranged on the far-end of cylinder liner 20a to 20c.As shown in figure 18, for example, major diameter part 36a to 36c can divide 44 to move towards reduced diameter portion from described far-end a little.In this case, reduced diameter portion needn't be set and divide 44.
As shown in figure 19, cylinder liner 20a to 20c can only have reduced diameter portion and divides 44.In this case, can make open-deck cylinder block, wherein not be closed in the end of pad surfaces 12 place's water jackets 22.After cylinder liner 20a to 20c friction stir welding is received cylinder block main body 18, remove reduced diameter portion and divide 44.
Probe 54 can be used as the water channel that links to each other with water jacket 22 from the hole that removes that it removes.
Particularly, as mentioned above, after in the intercommunicating pore 16 that cylinder liner 20a to 20c is inserted in the cylinder block main body 18, the periphery wall of the hollow cylindrical part 34a to 34c of cylinder liner 20a to 20c divides (see figure 7) on the inner circle wall that 44 one are bonded on intercommunicating pore 16 by reduced diameter portion.
Then, the major diameter part 36a to 36c that makes cylinder liner 20a to 20c and the pad surfaces 12 of cylinder block main body 18 be friction Stir each other. at this moment, the probe 54 of friction stir welding tools 50 is along zone that major diameter part 36a and pad surfaces 12 abut against each other, major diameter part 36a, the zone that 36b abuts against each other, the zone that major diameter part 36b and pad surfaces 12 abut against each other, major diameter part 36b, the zone that 36c abuts against each other, the zone that major diameter part 36c and pad surfaces 12 abut against each other, major diameter part 36c, the zone that 36b abuts against each other, the zone that major diameter part 36b and pad surfaces 12 abut against each other, major diameter part 36b, the zone that 36a abuts against each other, and the zone that abuts against each other of major diameter part 36a and pad surfaces 12, on by the direction shown in the arrow A among Figure 20, move. because traveling probe 54 like this, therefore the material of the pad surfaces 12 of the material of major diameter part 36a to 36c and cylinder block main body 18 is softened by frictional heat, and by probe 54 stirrings. the result, these materials are combined into solid-state, make the gentle main body cylinder block 18 of cylinder liner 20a to 20c each other one engage and make simultaneously cylinder liner 20a to 20c each other one engage.
Afterwards,, remove probe 54, remove hole Y1 in cylinder block main body 18, to leave from the zone of the wherein water channel to be formed of major diameter part 36a as Figure 20 and shown in Figure 21.
Afterwards, remove hole Y1 and be expanded and be processed into as shown in figure 22 water channel 90a by course of working.Removing hole Y1 does not stay in the cylinder block 10 by original state.Then, in major diameter part 36a to 36c, form water channel 90b to 90f.As can be seen from Figure 23, water channel 90a to 90f is communicated with water jacket 22.
Because the hole Y1 that removes that is formed among the major diameter part 36a is processed to water channel 90a, therefore provide cylinder block 10 with good appearance.Because removing hole Y1 not stays in the cylinder block 10 by original state, so cylinder block 10 has excellent mechanical intensity and rigidity.
Do not need to use packing, need not to excise partly cylinder block main body 18 and major diameter part 36a to 36c, and cylinder block main body 18 and major diameter part 36a to 36c needn't have large-size in advance.Therefore, reduced the cost of cylinder block 10.
After forming stud bolt hole 24a to 24h and water channel 90a to 90j, remove the reduced diameter portion of cylinder liner 20a to 20c as mentioned above and divide 44.The equal diameters (see figure 1) of the inner peripheral surface of cylinder liner 20a to 20c is to allow piston to-and-fro motion in cylinder liner 20a to 20c (seeing Figure 16 or Figure 17).When removing reduced diameter portion when dividing 44, also remove reduced diameter portion and divide 44 the zone that removes hole (removing probe 54) that comprises from it.Therefore, in the inner circle wall of hollow cylindrical part 34a to 34c, do not leave and remove the hole.
When cylinder block 10, cylinder head (not shown) etc. was combined into internal-combustion engine, water channel 90a to 90j was communicated with coolant channel in the cylinder head.Therefore, the flow through freezing mixture of coolant channel is introduced in the water jacket 22 by water channel 90a to 90j.
As shown in figure 24, can remove probe 54 with the zone that pad surfaces 12 is engaged with each other from one of them major diameter part 36a to 36c.In this case, as shown in figure 25, can provide from removing the crooked water channel 90 that hole Y2 begins.
Various details second embodiment, the cylinder liner friction stir welding that is used for having hollow cylindrical shape is connected on the cylinder block main body.
Figure 26 is the view sub-anatomy of cylinder block 100.Cylinder block 100 comprises cylinder block main body 102 and cylinder liner 104.
As can be seen from Figure 26, cylinder block main body 102 has the intercommunicating pore 106 that is used for therefrom inserting cylinder liner 104, and the ring-shaped step portion 108 that is arranged in intercommunicating pore 106 belows.Intercommunicating pore 106 has radially recessed ring-shaped step portion 110.Intercommunicating pore 106 and stepped part 110 are arranged to concentrically with respect to one another.In Figure 26, reference character 112,114 is represented pad surfaces and axle journal respectively.
Cylinder block main body 102 can for example be made by the HPDC that uses molten aluminum.Needn't in casting mould, provide from collapsing core.
Cylinder liner 104 comprises hollow cylindrical body, and it is made by the aluminum workpiece based on high content silicon by already known processes (for example, extrusion die casting technology, casting technique etc.).
Friction Stir cylinder block main body 102 and cylinder liner 104 as follows.
As shown in figure 26, cylinder liner 104 being inserted in the intercommunicating pore 106 of cylinder block main body 102. the cylinder liner of being inserted 104 has the lower end that is arranged in the ring-shaped step portion 108. and cylinder liner 104 is just supported securely from the below like this. and the opposite end of the cylinder liner of being inserted 104 has the corresponding periphery wall that the inner circle wall with intercommunicating pore 106 is held against. and cylinder liner 104 has intermediate portion, the periphery wall of this intermediate portion and stepped part 110 are spaced apart, thereby provide a gap as water jacket 116. betwixt
Therefore, according to this second embodiment, when being inserted into cylinder liner 114 in the intercommunicating pore 106, just formed water jacket 116.
Then, as shown in figure 27, friction stir welding tools is removed on the end face and pad surfaces 112 of cylinder liner 104 that element 130 is arranged in pad surfaces 112 places, the curved surface that this element had is with the mode bending identical with the inner circle wall of cylinder liner 104.It is made of aluminum that friction stir welding tools removes element 130.Friction stir welding tools removes element 130 and is rigidly secured in suitable position by the anchor clamps (not shown).
Then, the outer circumferential face of the inner circle wall of intercommunicating pore 106 and cylinder liner 104 engages by the friction Stir one.
As mentioned above, friction stir welding tools 50 comprises cylindrical rotating component 52 and probe 54, and the diameter of this probe is less than the diameter of rotating component 52 and have conical tip.In the present embodiment, will keep substantially the friction stir welding tools 50 of level insert in the intercommunicating pores 106, up to probe 54 near the lower end of cylinder liner 104.
Then, rotating component 52 is rotated, thereby produce frictional heat with softening zone cylinder liner 104, that contact with probe 54 so that probe 54 slides against cylinder liner 104.The tip of probe 54 is embedded in the softening zone.
The probe 54 that embeds is through cylinder liner 104 and the final inner circle wall that arrives intercommunicating pore 106, so the inner circle wall of the periphery wall of cylinder liner 104 and intercommunicating pore 106 is softened by frictional heat.
Then, friction stir welding tools 50 rotates along the circumferencial direction of cylinder liner 104.The material that is softened is stirred and plastic flow by probe 54.Then, the material that is softened is combined into solid-state when it removes at probe 54.When friction stir welding tools 50 rotates, repeat above-mentioned phenomenon continuously, up to the inner circle wall of the periphery wall of cylinder liner 104 and intercommunicating pore 106 each other one engage.
As shown in figure 27, cylinder liner 104 is by being disposed in the ring-shaped step portion 108 and supported rigidly.Therefore, can easily carry out the friction stir welding process.
After friction stir welding tools 50 rotates, temporarily remove probe 54 from cylinder liner 104.
At this moment, formation removes the hole in the inner circle wall of cylinder liner 104.The same with first embodiment, this removes the lower dead center below that the hole is positioned at piston 80, or under the lower dead center of piston ring 86a and the lower dead center in skirt section 82 top, and is not keeping in the zone of sliding contact with skirt section 82.Therefore, air and gasoline mixture do not enter and remove in the hole, thereby can seriously not influence the output power of internal-combustion engine.
Afterwards, the probe 54 that rotates is embedded in the zone that the periphery wall of the last inner circle wall of intercommunicating pore 106 wherein and cylinder liner 104 abuts against each other, and friction stir welding tools 50 rotates once more along the circumferencial direction of cylinder liner 104.When friction stir welding tools 50 rotated, the inner circle wall of the periphery wall of cylinder liner 104 and intercommunicating pore 106 was softened by probe 54 and stirs, and plastically mobile up to they one joints each other at last.So just made the cylinder block 100 that constitutes by cylinder block main body 102 and cylinder liner 104 (they are combination integratedly each other).
As can be seen from Figure 27, cylinder block 100 is so-called top enclosed cylinder bodies, wherein closes in the end of pad surfaces 112 place's water jackets 116.Between cylinder block main body 102 that has been engaged with each other and cylinder liner 104, there is not visual separatrix.
After finishing the friction stir welding process, friction stir welding tools 50 moves upward. as among Figure 28 with shown in the ratio of amplifying, probe 54 is removed from cylinder liner 104 gentle main body cylinder blocks 102, and embeds friction stir welding tools and remove in the element 130.
Afterwards, probe 54 is removed element 130 from friction stir welding tools remove, leave and remove the hole thereby remove in the element 130 (rather than in cylinder liner 104 or cylinder block main body 102) at friction stir welding tools.
Be arranged in the opening of intercommunicating pore 106 and remove element 130 and remove probe 54 by like this friction stir welding tools being removed element 130, just made the cylinder block 100 that does not remove the hole from friction stir welding tools.Therefore cylinder block 100 has good surface appearance.
Owing in cylinder block 100, does not leave and remove the hole, so cylinder block 100 has excellent mechanical intensity and rigidity.
According to second embodiment, need not to use packing, and needn't excise cylinder block main body 102 and cylinder liner 104 partly.Therefore, reduced the cost of cylinder block 100.
The cylinder block main body 102 of cylinder block 100 is cast by HPDC because of it and is had small wall thickness.The same with first embodiment, be used as water jacket 116 in the stepped part 110 and the gap between the cylinder liner 104 of cylinder block main body 102.Therefore, needn't in the cylinder block main body 5 of general top enclosed cylinder body 1, provide water jacket 2 (seeing Figure 58) as a space.
Based on this, can reduce the wall thickness of cylinder block main body 102, can reduce the volume of cylinder block 100.Therefore, can reduce the size and the volume of cylinder block 100.
Smooth for the pad surfaces 112 that makes cylinder block 100, discharge friction stir welding tools from anchor clamps and remove element 130 and it is removed.Afterwards, as shown in figure 29, can the end of cylinder liner 104 at pad surfaces 112 places be engaged with pad surfaces 112 one by friction Stir.Therefore can further increase the rigidity of cylinder block 100.
As shown in figure 30, cylinder liner 104 can have from the end 104a that intercommunicating pore 106 stretches out.In this case, can use friction stir welding tools to remove element 132, stretch out the outer circumferential face of end 104a with support.
After carrying out the friction stir welding process, friction stir welding tools 50 is moved on to end 104a.As shown in figure 30, probe 54 is removed from cylinder block main body 102, and embed end 104a and friction stir welding tools removes in the element 132.
Afterwards, probe 54 is removed element 132 by end 104a from friction stir welding tools remove, remove the hole to remove at friction stir welding tools to leave among element 132 and the end 104a (rather than in cylinder block main body 102).
To and remove element 132 from end 104a that intercommunicating pore 106 stretches out excision and remove, and as shown in figure 31, thereby make the upper end of cylinder liner 104 concordant each other with pad surfaces 112 with friction stir welding tools.When removing when stretching out end 104a and friction stir welding tools and removing element 132, what remove end 104a simultaneously wherein forms the zone that removes the hole.Therefore, in made cylinder block 100, do not leave and remove the hole.
End 104a by making cylinder liner 104 like this stretches out and removes element 132 from the friction stir welding tools of the periphery wall that surrounds end 104a from intercommunicating pore 106 and removes probe 54, can be made into the cylinder block 100 that does not remove the hole.
Friction stir welding tools removes part and is not limited to the element 130,132 that separates with cylinder block main body 102, and can be the element that stretches out from pad surfaces 112 one of cylinder block main body 102.In this case, can after the friction stir welding process, remove friction stir welding tools and remove element.
Friction stir welding tools removes part and is not limited to have along the plate shape of the curved surface of the circumference bending of cylinder liner 104, and can be in the annular shape of pad surfaces 112 place's coating gas cylinder sleeve 104 end faces or surround the annular shape from the end 104a that intercommunicating pore 106 stretches out of cylinder liner 104.
Friction stir welding tools remove element 130,132 be not limited to made of aluminum, and can by allow probe 54 therein easily the material of motion make.
According to second embodiment, can be as follows the cylinder liner of hollow cylindrical body form be bonded on the cylinder block main body.
Use molten aluminum to make cylinder block main body 140 (seeing Figure 37) in the same manner as described above by HPDC.Make the cylinder liner 105a to 105c shown in Figure 32, they have the form by the hollow cylindrical body of making based on the aluminium of high content silicon, and the upper end of the periphery wall of cylinder liner 105a to 105c engages linearly by the closing element 142 shown in Figure 33.As can be seen from Figure 33, closing element 142 is the form of the linear modules of three ring-type elements.
To describe an embodiment below, and wherein use the anchor clamps 150 shown in Figure 34 that cylinder liner 105a to 105c and closing element 142 are engaged with each other, and the cylinder liner 105a to 105c by closing element 142 linear joints are joined on the cylinder block main body 140.
Anchor clamps 150 are the cuboid form, what it had that material by the cylindrical form of removing de-chucking 150 forms first inserts unit 152a to 152c and second and inserts unit 154, and this second inserts unit and be arranged to become to surround with first opening that inserts unit 152a to 152c concern.Shown in Figure 34 and 35, cylinder liner 105a to 105c inserts first respectively and inserts among the unit 152a to 152c, and closing element 142 inserts in the second insertion unit 154.Friction stir welding tools 50 is operated then so that cylinder liner 105a to 105c is engaged with each other with closing element 142.
Particularly, the probe 54 of friction stir welding tools 50 against cylinder liner 105a to 105c wherein and closing element 142 mutually against the zone in the position of any desired, rotating component 52 is rotated.When rotating component 52 rotates, against the material plastic flow in zone, should be in the zone to allow probe 54 to embed.Then, friction stir welding tools 50 moves against the zone along this, then the material of the gentle main body cylinder block 140 of the material of friction Stir closing element 142, thus engage the upper end of the periphery wall of the inner periphery of closing element 142 and cylinder liner 105a to 105c.As shown in figure 36, so just made the grip assembly 158 of the joint that overlaps as the top enclosed cylinder.
Then as shown in figure 37, the grip assembly 158 that engages is inserted in the intercommunicating pore 106 in the cylinder block main body 140.The lower end of the cylinder liner 105a to 105c that inserted is arranged on the 108a to 108c of ring-shaped step portion, and closing element 142 is arranged in the recess 118 of the pad surfaces 112 that is defined in cylinder block main body 140.
Owing to the grip assembly 158 that engages is inserted in the intercommunicating pore 106, therefore between the inner circle wall of second annular notch 120 and cylinder liner 105a to 105c, forms the gap.This gap with in the gap that forms between cylinder liner 105a, the 105b and the gap that between cylinder liner 105b, 105c, forms be communicated with, thereby water jacket 116 is provided.
Then, the pad surfaces 112 of closing element 142 gentle main body cylinder blocks 140 is carried out friction Stir.Particularly, the rotating component 52 (seeing Figure 39) of friction stir welding tools 50 is rotated, and with in any desired position on the probe 54 embedding cylinder block main bodys 140 of rotating.
Then, probe 54 moving along closing element 142 gentle main body cylinder blocks 140 on the direction shown in the arrow A in by Figure 38 against the zone.When probe 54 was mobile like this, the material of the pad surfaces 112 of the gentle main body cylinder block 140 of the material of the peripheral edge of closing element 142 was softened by frictional heat, and was stirred by probe 54.As a result, these materials are combined into solid-state.
At this moment, as among Figure 39 with shown in the ratio of amplifying because closing element 142 supported rigidly by being arranged in the recess 118, so closing element 142 can easily not separate from cylinder block main body 140.The same with first embodiment, can under the situation that need not to be used to prevent the clamping device that cylinder block main body 140 and closing element 142 are separated from one another, easily carry out the friction stir welding process.In addition, because closing element 142 is closed water jacket 116, prevented that therefore softening material from flowing in the water jacket 116.
Utilize aforesaid operations, cylinder liner 105a to 105c is gentle, and main body cylinder block 140 is engaged with each other by closing element 142.
At last, the diameter that removes the hole that forms in pad surfaces 112 when removing probe 54 is increased, then is trimmed to stud bolt hole with preliminary dimension precision.
So just made top enclosed cylinder body, wherein the end at pad surfaces 112 places of water jacket 116 is closed by the closing element 142 that is arranged in the recess 118.
As mentioned above, after use anchor clamps 150 are bonded on closing element 142 on the cylinder liner 105a to 105c, in the intercommunicating pore 106 in cylinder liner 105a to the 105c insertion cylinder block main body 140, and closing element 142 is bonded on the cylinder block main body 140, thereby closes the water jacket 116 that is arranged between cylinder block main body 140 and the cylinder liner 105a to 105c.
Particularly, even water jacket 116 is located between cylinder block main body 140 and the cylinder liner 105a to 105c, cylinder block main body 140 and cylinder liner 105a to 105c also can utilize friction Stir to engage by closing element 142.Therefore, can be made into and have less wall thickness and lightweight top enclosed cylinder body.
Needn't be provided at gap and the gap between cylinder liner 105b, 105c between cylinder liner 105a, the 105b.As shown in figure 40, for example, first of anchor clamps 150 insert unit 152a to 152c and keep communicating with each other, the presumptive area of the periphery wall of cylinder liner 105a to 105c can be excised and be bonded together linearly, and cylinder liner 105a to 105c first inserting among the unit 152a to 152c of can inserting that the maintenance of anchor clamps 150 communicates with each other.Afterwards, closing element 142 and cylinder liner 105a to 105c can engage by friction Stir, and then the pad surfaces 112 of the gentle main body cylinder block 140 in the peripheral edge of closing element 142 can engage in the above described manner by friction Stir.In this case, water jacket 116 only is formed between the grip assembly 158 gentle main body cylinder blocks 140 of joint.
Perhaps, as shown in figure 41, the upper end of the periphery wall of cylinder liner 105a to 105c can be excised along circumference, to provide support stepped part 160.As shown in figure 42, the support level portion 160 and second that closing element 142 can be arranged in the cylinder liner 105a to 105c among the first insertion unit 152a to 152c that inserts anchor clamps 150 inserts on the unit 154, and can friction Stir cylinder liner 105a to 105c and closing element 142.In this case, because closing element 142 supported stepped part 160 support rigidly, so cylinder liner 105a to 105c and closing element 142 can be engaged with each other reliably.
If use anchor clamps 150, then anchor clamps 150 can have the 3rd insertion unit 156 as shown in figure 43.The 3rd inserts unit 156 stretches out from second peripheral edge of inserting unit 154, and the friction stir welding tools that will be used for removing the probe 54 of friction stir welding tools 50 removes element 134 and inserts the 3rd and insert unit 156.
Friction stir welding tools removes element 134 and inserts in advance in the 3rd insertion unit 156.Then, shown in Figure 43 and 44, cylinder liner 105a to 105c is inserted first respectively insert among the unit 152a to 152c, afterwards closing element 142 is inserted second and insert in the unit 154.Then, cylinder liner 105a to 105c and closing element 142 (seeing Figure 33) engage by friction stir welding tools 50 in the same manner as described above.
After closing element 142 and cylinder liner 105a to 105c have engaged, friction stir welding tools 50 is moved, shown in the dotted line among Figure 44 from removing element 134 against the zone towards friction stir welding tools.After removing probe 54, remove friction stir welding tools and remove element 134, thereby to make the grip assembly 158 of joint as the cylinder liner that is used for top enclosed cylinder body with mode identical shown in Figure 36.The grip assembly 158 that engages does not have probe 54 to remove the hole from what it removed.Therefore, the grip assembly 158 of joint has favorable rigidity.
Then, carry out operation same as described above.Like this, make top enclosed cylinder body, wherein water jacket 116 is closed (seeing Figure 37) at the closing element 142 that the end at pad surfaces 112 places is disposed in the recess 118.
As shown in figure 45, anchor clamps 150 can have a plurality of the 3rd and insert unit 156, and friction stir welding tools removes element 134 and can insert the 3rd respectively and insert in the unit 156.Because probe 54 can remove from more position, therefore carry out the friction stir welding process easily.As from Figure 43 and Figure 45 as can be seen, friction stir welding tools removes element 134 and is not limited to any particular location.
To describe an embodiment below, and wherein under the situation of not using anchor clamps 150, cylinder block main body 140 and cylinder liner 105a to 105c will be engaged with each other by closing element 142.
In this case, support level portion 160 is arranged on the upper end of periphery wall of cylinder liner 105a to 105c (seeing Figure 41).Then, thus cylinder liner 105a to 105c be inserted into expose support level portion 160 in the intercommunicating pore 160 of cylinder block main body 140.
Then, as among Figure 46 with shown in the magnification ratio, closing element 142 is arranged in the recess 118 of cylinder block main body 140 and in the support level portion 160.
When the pad surfaces 112 of the gentle main body cylinder block 140 in peripheral edge of the upper-end surface of the inner periphery of closing element 142 and cylinder liner 105a to 105c and closing element 142 engages by friction stir welding tools 50, just made top enclosed cylinder body.Owing to needn't use anchor clamps 150, therefore can make top enclosed cylinder body easily.
In recess 118 and the support level portion 160 at least one can be set.For example, as shown in figure 47, when carrying out the friction stir welding process, support level portion 160 can not be arranged on the upper end of cylinder liner 105a to 105c, and closing element 142 can only be arranged in the recess 118.Perhaps, as described in Figure 48, when carrying out the friction stir welding process, recess 118 can not be arranged in the cylinder block main body 140, and closing element 142 can only be arranged in the support level portion 160 of the upper end that is arranged at cylinder liner 105a to 105c.
The upper-end surface of the inner periphery of friction Stir closing element 142 and cylinder liner 105a to 105c at first, the perhaps pad surfaces 112 of the gentle main body cylinder block 140 in the peripheral edge of friction Stir closing element 142 at first.
As shown in Figure 49, can be by being individually formed three ring-type element 72a to 72c, excise the part end of ring-type element 72a to 72c afterwards, ring-type element 72a to 72c is arranged in second to be inserted in unit 154 and the recess 118 or in the support level portion 160, pass through friction Stir and the end of engagement annular element 72a to 72c then, thereby make closing element 142.Certainly, in advance the excision end of engagement annular element 72a to 72c to make closing element 142.
As shown in figure 50, can engage cylinder liner 105a to 105c linearly.In this case, the closing element 142 that can adopt the closing element 142 shown in Figure 33 or constitute by the ring-type element 144a to 144c of as shown in figure 49 joint.
Can as follows the cylinder liner with hollow cylindrical be bonded on the cylinder block main body.
Use molten aluminum to make the cylinder block main body 161 shown in local excision's stereogram of Figure 51 by HPDC.
As can be seen from Figure 51, cylinder block main body 161 has the cylinder liner 162a to 162c that is used to make shown in Figure 52 and inserts wherein intercommunicating pore 106, is provided with the ring-shaped step portion 164 of joint in the bottom of intercommunicating pore 106.This intercommunicating pore 106 has radially recessed stepped part 166.Intercommunicating pore 106 and stepped part 166 can be arranged concentrically with respect to one another.In Figure 51, reference character 112,114 is represented pad surfaces and axle journal respectively.
Stepped part 166 can be made simultaneously by HPDC process and intercommunicating pore 106.Perhaps, after making intercommunicating pore 106, can make stepped part 166 by the part of inner circle wall of excision intercommunicating pore 106 by the HPDC process.
Make the cylinder liner 162a to 162d shown in Figure 52.By known procedure (for example, extrusion die casting process, casting process etc.) by make hollow cylindrical body based on the aluminium workpiece of high content silicon, the a part of circumferential side wall that excises hollow cylindrical body then to be forming plane 168a, 168d, thereby can be made into each cylinder liner 162a to 162d.
Then, in plane 168a, 168d, form radially recessed recess 170a, 170d from cylinder liner 162a, 162d.
Make remaining cylinders cover 162b, 162c. as follows and on hollow cylindrical body, forms after plane 168b, the 168c identical, in plane 168b, 168c, 172b, 172c, also forming recess 170b, 170c, 174b, 174c. with position formation plane 172b, the 172c. at plane 168b, 168c interval 180. on the hollow cylindrical body with plane 168a, the 168d of cylinder liner 162a, 162d
Then, shown in Figure 53, cylinder liner 162a to 162d is inserted in the intercommunicating pore 106 of cylinder block main body 161.The lower end of the cylinder liner 162a to 162d that inserts is arranged in the ring-shaped step portion 164 of joint.So just support cylinder liner 162a to 162d securely from the below.
The periphery wall that inserts the longitudinal end of the cylinder liner 162a to 162d in the intercommunicating pore 106 is held against the inner circle wall of intercommunicating pore 106.The plane 172b of cylinder liner 162b is held against the plane 168a of cylinder liner 162a.Equally, the plane 172c of cylinder liner 162c is held against the plane 168b of cylinder liner 162b, and the plane 168d of cylinder liner 162d is held against the plane 168c of cylinder liner 162c.
Cylinder liner 162a, 162d have intermediate portion, the periphery wall of these intermediate portions and stepped part 166 are spaced apart, and recess 170a and 174b, 170b and 174c, 170c and 174d are spaced apart between adjacent cylinder liner 162a and 162b, 162b and 162c, 162c and 162d, thereby provide the gap that communicates with each other as water jacket 116.
Therefore, according to present embodiment, when inserting cylinder liner 162a to 162d in the intercommunicating pore 106, form water jacket 116.
Then, the cylinder liner 162a to 162d in friction Stir cylinder block main body 161 and the insertion intercommunicating pore 106, thus one engages these elements 161,162a to 162d.Particularly, with the periphery wall of the inner circle wall of intercommunicating pore 106 and cylinder liner 162a to 162d friction Stir each other.
At this moment, shown in Figure 54, use friction stir welding tools 66, it comprises first rotating component 60, be installed on the circumferential side wall of this first rotating component 60 and can be independent of second rotating component 62 that this first rotating component 60 rotates and diameter less than second rotating component 62 and probe 64 with conical tip.Friction stir welding tools 66 is inserted among the cylinder liner 162a, up to the inner circle wall of probe 64 against cylinder liner 162a.At this moment, probe 64 is positioned at the below of water jacket 116.
Then, rotate second rotating component 62, thereby in the same manner as described above the tip of probe 64 is embedded among the cylinder liner 162a.
The probe 64 that embeds passes through cylinder liner 162a, and finally arrives the inner circle wall of intercommunicating pore 106, so the inner circle wall of the periphery wall of cylinder liner 162a and intercommunicating pore 106 is softened by frictional heat.
Then, first rotating component 60 is rotated, so that embedded probe 64 moves along the circumferencial direction of cylinder liner 162a.When probe 64 was mobile like this, the material that is softened was stirred by probe 64 and plastically flows.Afterwards, the material that is softened when it removes probe 64, be combined into solid-state.Repeat above-mentioned phenomenon continuously, up to the inner circle wall of the periphery wall of cylinder liner 162a and intercommunicating pore 106 each other one engage.Simultaneously, the plane 172b of the plane 168a of cylinder liner 162a and cylinder liner 162b each other one engage.
At this moment, shown in Figure 53, cylinder liner 162a, 162b are by in the ring-shaped step portion 164 that is disposed in joint and supported rigidly.Therefore, can easily carry out the friction stir welding process.
Remaining cylinder liner 162b to 162d works in the same way to make four cylinder top enclosed cylinder bodies 180 (seeing Figure 53), wherein adjacent cylinder liner 162a and 162b, 162b and 162c, 162c and 162d are engaged with each other, and the periphery wall of the inner circle wall of the intercommunicating pore in cylinder block main body 161 106 and cylinder liner 162a to 162d is engaged with each other.As can be seen from Figure 53, top enclosed cylinder body 180 makes water jacket 116 close in the end at pad surfaces 112 places.
Cylinder liner 162a to 162d can pass through friction Stir and the one joint in the end face and the pad surfaces 112 at pad surfaces 112 places. at this moment, shown in Figure 55, use has the friction stir welding tools 50 of rotating component 52 and probe 54, and probe 54 moves along a zone in by the direction shown in the arrow A of Figure 56, cylinder liner 162a to 162d abuts against each other in the peripheral edge and the cylinder block main body 161 of the end face at pad surfaces 112 places in this zone. and the material of the pad surfaces 112 of the gentle main body cylinder block 161 of the material of these peripheral edges softens by frictional heat, and being stirred by probe 54. the result, these materials are combined into solid-state.
Then, adjacent cylinder liner 162a and 162b, 162b and 162c, 162c and 162d are in the end face at pad surfaces 112 places friction Stir each other.At this moment, probe 54 can be along being moved by arrow B among Figure 57 to the direction shown in the D.
As mentioned above, because the material one of the material of the material of cylinder block main body 161 and cylinder liner 162a to 162d and adjacent cylinder cover engages, therefore further increased the rigidity of top enclosed cylinder body 180.
Only excise a part of periphery wall of cylinder liner 162a to 162d, and cylinder block main body 161 and cylinder liner 162a to 162d needn't mass excisions.Therefore, the waste material amount is very little.
Water jacket 116 does not need to be arranged between the adjacent cylinder liner 162a to 162d, and can only be arranged between cylinder block main body 161 and each the cylinder liner 162a to 162d.
Cylinder liner 162a to 162d can wait and engage in advance by welding, to make the cylinder liner assembly of joint, then the cylinder liner assembly that engages can be inserted in the intercommunicating pore 106.
In a second embodiment, the same with first embodiment, the hole that removes that is formed in the pad surfaces 112 can be processed as two bolts hole, water channel etc. when removing the probe 54 of friction stir welding tools 50.
In first embodiment or second embodiment, cylinder liner 20a to 20c is not limited to be made by the aluminium based on high content silicon, and can be made by other aluminum alloy or aluminium.Other preferred exemplary comprises cylinder liner that cylinder liner made by magnesium or magnesium alloy, MMC cover etc.

Claims (23)

1. make the method for cylinder block (10) by friction stir welding for one kind, comprise step:
Friction stir welding tools (50) embedding of rotating is had in the cylinder block against the zone (10) of cylinder liner (20a, 20b, 20c);
Make at least one motion in described friction stir welding tools (50) and the described cylinder block (10), so that described friction stir welding tools (50) moves against the zone along described, be used for by the softening described material of frictional heat against the zone, and by the described material of described friction stir welding tools (50) stirring, to engage described described material against the zone against the zone; And
Engaging describedly after the described material in zone, removing described friction stir welding tools (50) from the pad surfaces (12) of described cylinder block (10);
It is characterized in that, will (Y1, Y2 Y3) be processed as stud bolt hole (24a, 24b, 24c, 24d, 24e, 24f, 24g, 24h) because of removing the hole that removes that described at least friction stir welding tools (50) forms.
2. make the method for cylinder block (10) by friction stir welding for one kind, comprise step:
Friction stir welding tools (50) embedding of rotating is had in the cylinder block against the zone (10) of cylinder liner (20a, 20b, 20c);
Make at least one motion in described friction stir welding tools (50) and the described cylinder block (10), so that described friction stir welding tools (50) moves against the zone along described, be used for by the softening described material of frictional heat against the zone, and by the described material of described friction stir welding tools (50) stirring, to engage described described material against the zone against the zone; And
Engaging describedly after the described material in zone, removing described friction stir welding tools (50) from the pad surfaces (12) of described cylinder block (10);
It is characterized in that, will (Y1, Y2 Y3) be processed as oilhole, positioning pin hole or dowel hole because of removing the hole that removes that described at least friction stir welding tools (50) forms.
3. method of making cylinder block (10), its by the cylinder liner (20a, 20b, 20c) in friction stir welding tools (50) friction Stir cylinder block main body (18) of rotating and the cylinder thorax (16) that inserts described cylinder block main body (18) against the zone, thereby make cylinder block (10), it is characterized in that following steps:
Described friction stir welding tools (50) is embedded at least one of described cylinder block main body (18) and described cylinder liner (20a, 20b, 20c);
Along the described described friction stir welding tools (50) that moves against the zone, be used for by the softening described material of frictional heat, and stir described described material against the zone by described friction stir welding tools (50) against the zone, described to engage against the zone; And
Described after the zone at joint, remove described friction stir welding tools (50) from described against zone or described cylinder liner (20a, 20b, 20c);
Wherein, remove described friction stir welding tools (50) from the zone that wherein will form water channel (90a, 90b, 90c, 90d, 90e, 90f, 90g, 90h, 90i, 90j), described water channel is communicated with water jacket (22) between described cylinder block main body (18) and described cylinder liner (20a, 20b, 20c).
4. method according to claim 3, it is characterized in that, described cylinder liner (20a, 20b, 20c) has hollow cylindrical part (34a, 34b, 34c) with major diameter part (36a, 36b, 36c), described major diameter part (36a, 36b, 36c) be arranged on the layout area (30) in the described cylinder block main body (18), to allow to be formed on described hollow cylindrical part (34a, 34b, 34c) and the gap between the described cylinder thorax (16) as water jacket (22), and the pad surfaces (12) of the described cylinder block main body of friction Stir (18) and described major diameter part (36a, 36b, 36c), with described water channel (90a, 90b, 90c, 90d, 90e, 90f, 90g, 90h, 90i, 90j) be arranged on described at least major diameter part (36a, 36b, 36c).
5. a cylinder liner (20a, 20b, 20c) that has the cylinder block main body (18) of cylinder thorax (16) by friction Stir and insert in the described cylinder thorax (16) is made the method for cylinder block (10), it is characterized in that following steps:
From the inner circle wall of described cylinder liner (20a, 20b, 20c) friction stir welding tools (50) that rotates is embedded the described cylinder liner, arrive the inner circle wall of described cylinder thorax (16) up to described friction stir welding tools (50);
Move described friction stir welding tools (50), to soften the material of described cylinder liner (20a, 20b, 20c) and the material of described cylinder block main body (18) by frictional heat, and stir these materials, thereby described cylinder liner (20a, 20b, 20c) and described cylinder block main body (18) are engaged with each other by described friction stir welding tools (50); And
After described cylinder liner (20a, 20b, 20c) and described cylinder block main body (18) are engaged with each other, remove described friction stir welding tools (50);
Wherein, the position of the lower dead center of the piston ring (86a) on being assemblied in the circumferential side wall that inserts the piston (80) in the described cylinder thorax (16) below, (20a, 20b, 20c) removes described friction stir welding tools (50) from described cylinder liner.
6. method according to claim 5 is characterized in that, the position below the lower dead center in described piston (80) skirt section (82), and (20a, 20b, 20c) removes described friction stir welding tools (50) from described cylinder liner.
7. according to claim 5 or 6 described methods, it is characterized in that, also comprise a step, that is, and the end face that the pad surfaces (12) of the described cylinder block main body of friction Stir (18) and described cylinder liner (20a, 20b, 20c) are located in described pad surfaces (12).
8. a cylinder liner (104) that has the cylinder block main body (102) of cylinder thorax (106) by friction Stir and insert in the described cylinder thorax (106) is made the method for cylinder block (100), described cylinder thorax (106) has radially recessed stepped part (110) and the friction stir welding tools that is installed on the pad surfaces (112) removes element (130), it is characterized in that following steps:
From the inner circle wall of described cylinder liner (104) friction stir welding tools (50) that rotates is embedded the described cylinder liner (104), arrive the inner circle wall of described cylinder thorax (106) up to described friction stir welding tools (50);
Move described friction stir welding tools (50), to soften the material of described cylinder liner (104) and the material of described cylinder block main body (102) by frictional heat, and stir described material, thereby described cylinder liner (104) and described cylinder block main body (102) are engaged with each other by described friction stir welding tools (50); And
After described cylinder liner (104) and described cylinder block main body (102) are engaged with each other, remove described friction stir welding tools (50);
Wherein, move to described friction stir welding tools at described friction stir welding tools (50) from the described inner circle wall of described cylinder liner (104) and remove element (130) afterwards, remove element (130) from described friction stir welding tools and remove described friction stir welding tools (50).
9. method according to claim 8 is characterized in that, also comprises step:
When described cylinder liner (104) is inserted in the described cylinder thorax (106), stretch out from described cylinder thorax (106) one end (104a) of described cylinder liner (104), and make the described end (104a) of described cylinder liner (104) remove element (132) against described friction stir welding tools;
After described cylinder liner (104) and described cylinder block main body (102) are engaged with each other, described friction stir welding tools (50) is moved to described external part (104a), and remove element (132) by described end (104a) from described friction stir welding tools and remove described friction stir welding tools (50);
Remove the described end (104a) that described friction stir welding tools removes element (132), so that described pad surfaces (112) is alignd on the position with the upper-end surface of described cylinder liner (104).
10. according to Claim 8 or 9 described methods, it is characterized in that, also comprise step: the end face that the described pad surfaces (112) of the described cylinder block main body of friction Stir (102) and described cylinder liner (104) are located in described pad surfaces (112).
11. a manufacturing is used for the method for the cylinder liner of top enclosed cylinder body, the closing element (142) that described cylinder liner has hollow cylindrical element (105a, 105b, 105c) and engages with the periphery wall of described hollow cylindrical element (105a, 105b, 105c), wherein, when described cylinder liner is inserted in the cylinder thorax (106) that is defined in cylinder block main body (140), described closing element (142) is closed in the opening that the water jacket (116) in the described cylinder block main body (140) is located in pad surfaces (112), it is characterized in that following steps:
Use anchor clamps (150), these anchor clamps have described hollow cylindrical element (105a, 105b, 105c) can insert first inserting unit (152a, 152b, 152c) and described closing element (142) and can insert wherein the second insertion unit (154) wherein, described hollow cylindrical element (105a, 105b, 105c) is inserted described first insert in the unit (152a, 152b, 152c), described closing element (142) inserts described second and inserts in the unit (154); And
Fetch joint described hollow cylindrical element (105a, 105b, 105c) and described closing element (142) by friction stir welding.
12. method according to claim 11, it is characterized in that, described hollow cylindrical element (105a, 105b, 105c) on its periphery wall, has support level portion (160), with described hollow cylindrical element (105a, 105b, 105c) be inserted into described first of described anchor clamps (150) and insert unit (152a, 152b, described support level portion (160) exposes in the time of 152c), described closing element (142) is arranged in the described support level portion (160), and the described hollow cylindrical element of friction Stir (105a, 105b, 105c) with described closing element (142).
13. method of making top enclosed cylinder body, this cylinder block has cylinder block main body (140), insert hollow cylindrical element (105a, 105b, 105c) in the cylinder thorax (106) be defined in described cylinder block main body (140), be arranged on the water jacket (116) between described cylinder block main body (140) and the described hollow cylindrical element (105a, 105b, 105c) and locate to close the closing element (142) of the end of described water jacket (116) in the pad surfaces (112) of described cylinder block main body (140), it is characterized in that following steps:
By friction Stir, described hollow cylindrical element (105a, 105b, 105c) and described closing element (142) are engaged with each other; With
By friction Stir described cylinder block main body and described closing element (142) are engaged with each other.
14. method according to claim 13, it is characterized in that, by using the described hollow cylindrical element of anchor clamps (150) friction Stir (105a, 105b, 105c) with described closing element (142), these anchor clamps (150) have described hollow cylindrical element (105a, 105b, 105c) can insert wherein first insert unit (152a, 152b, 152c) and described closing element (142) can insert wherein second insert unit (154), with described hollow cylindrical element (105a, 105b, 105c) insert described first and insert unit (152a, 152b, 152c), described closing element (142) is inserted described second to be inserted in the unit (154), the described hollow cylindrical element (105a that described closing element (142) is engaged afterwards, 105b, 105c) insert in the cylinder thorax (106) of described cylinder block main body (140), and described cylinder block main body of friction Stir (140) and described closing element (142).
15. method according to claim 14, it is characterized in that, described hollow cylindrical element (105a, 105b, 105c) on its periphery wall, has support level portion (160), at described hollow cylindrical element (105a, 105b, 105c) be inserted into first of described anchor clamps (150) and insert unit (152a, 152b, described support level portion (160) exposes in the time of 152c), described closing element (142) is arranged in the described support level portion (160), and the described hollow cylindrical element of friction Stir (105a, 105b, 105c) with described closing element (142).
16. method according to claim 14, it is characterized in that, in the periphery wall of described cylinder block main body (140) and described hollow cylindrical element (105a, 105b, 105c) at least one has support level portion (160), described closing element (142) is arranged in the described support level portion (160), described hollow cylindrical element of friction Stir (105a, 105b, 105c) and described closing element (142), and described cylinder block main body of friction Stir and described closing element (142).
17. a manufacturing is used for the method for the cylinder liner of top enclosed cylinder body, the closing element (142) that described cylinder liner has hollow cylindrical element (105a, 105b, 105c) and engages with the periphery wall of described hollow cylindrical element (105a, 105b, 105c), wherein when described cylinder liner being inserted in the cylinder thorax (106) that is defined in cylinder block main body (140), described closing element (142) is closed the opening that the water jacket (116) in the described cylinder block main body (140) is located in pad surfaces (112), it is characterized in that following steps:
Use has first and inserts single (152a, 152b, 152c), second inserts the anchor clamps (150) that unit (154) and the 3rd inserts unit (156), with described hollow cylindrical element (105a, 105b, 105c) insert described first and insert unit (152a, 152b, 152c), described closing element (142) is inserted described second to be inserted in the unit (154), friction stir welding tools is removed element (134) insert in described the 3rd insertion unit (156), make described hollow cylindrical element (105a by friction Stir afterwards, 105b, 105c) engage with described closing element (142); And
After described friction Stir is finished, remove element (132) from described friction stir welding tools and remove friction stir welding tools (50).
18. method according to claim 17, it is characterized in that, described hollow cylindrical element (105a, 105b, 105c) on its periphery wall, has support level portion (160), with described hollow cylindrical element (105a, 105b, 105c) be inserted into first of described anchor clamps (150) and insert unit (152a, 152b, described support level portion (160) exposes in the time of 152c), described closing element (142) is arranged in the described support level portion (160), and the described hollow cylindrical element of friction Stir (105a, 105b, 105c) with described closing element (142).
19. according to claim 17 or 18 described methods, it is characterized in that, can engage a plurality of described hollow cylindrical elements (105a, 105b, 105c) in advance.
20. method of making top enclosed cylinder body, wherein form water jacket (116) in the gap between cylinder block main body (161) and cylinder liner (162a, 162b, 162c, 162d), and close described water jacket (116) in the end that pad surfaces (112) is located, it is characterized in that following steps:
Make the cylinder block main body (161) with cylinder thorax (106), this cylinder thorax has radially recessed stepped part (166) and is used for arranging the layout area (164) of the end face of described cylinder liner (162a, 162b, 162c, 162d) thereon;
Described cylinder liner (162a, 162b, 162c, 162d) is inserted in the described cylinder thorax (106), the described end face of described cylinder liner (162a, 162b, 162c, 162d) is arranged on the described layout area (164), and between the periphery wall of described cylinder liner (162a, 162b, 162c, 162d) and described stepped part (166), forms described water jacket (116); And
The inner circle wall of described cylinder liner of friction Stir (162a, 162b, 162c, 162d) and described cylinder thorax (106) is to make cylinder block.
21. method according to claim 20, it is characterized in that, also comprise a step, that is the described pad surfaces (112) of the described cylinder block main body of friction Stir (161) and insert the end face that the described cylinder liner (162a, 162b, 162c, 162d) in the described cylinder thorax (106) is located in described pad surfaces (112).
22. according to claim 20 or 21 described methods, it is characterized in that, described cylinder liner (162a, 162b, 162c, 162d) has plane (168a, 168b, 168c, 168d) on its described periphery wall, and adjacent described cylinder liner (162a, 162b, 162c, 162d) remains by described plane (168a, 168b, 168c, 168d) and abuts against each other in described cylinder thorax (106).
23. method according to claim 22, it is characterized in that, in described plane (168a, 168b, 168c, 168d), form the recess (170a, 170b, 170c, 170d, 174b, 174c) that radially is recessed into and is used as described water jacket (116) from described cylinder liner (162a, 162b, 162c, 162d).
CN200480002999.8A 2003-01-28 2004-01-28 Method of producing cylinder block and cylinder sleeve by friction stir welding Expired - Fee Related CN1745238B (en)

Applications Claiming Priority (19)

Application Number Priority Date Filing Date Title
JP019426/2003 2003-01-28
JP2003019426A JP2004261813A (en) 2003-01-28 2003-01-28 Friction stir joining method
JP019189/2003 2003-01-28
JP2003019189A JP4113437B2 (en) 2003-01-28 2003-01-28 Cylinder sleeve
JP021059/2003 2003-01-29
JP2003021056A JP4074523B2 (en) 2003-01-29 2003-01-29 Cylinder sleeve for closed deck type cylinder block and manufacturing method of closed deck type cylinder block
JP2003021059A JP2004261814A (en) 2003-01-29 2003-01-29 Friction stir joining method
JP2003021063A JP2004261815A (en) 2003-01-29 2003-01-29 Friction stir joining method
JP021056/2003 2003-01-29
JP021063/2003 2003-01-29
JP2003154817A JP2004351505A (en) 2003-05-30 2003-05-30 Manufacturing method of cylinder block
JP154817/2003 2003-05-30
JP2003154866A JP4058382B2 (en) 2003-05-30 2003-05-30 Manufacturing method of closed deck cylinder block
JP2003154794A JP4262524B2 (en) 2003-05-30 2003-05-30 Method of manufacturing cylinder sleeve for closed deck type cylinder block
JP154866/2003 2003-05-30
JP154846/2003 2003-05-30
JP2003154846A JP2004351506A (en) 2003-05-30 2003-05-30 Manufacturing method of cylinder block
JP154794/2003 2003-05-30
PCT/JP2004/000745 WO2004074667A1 (en) 2003-01-28 2004-01-28 Cylinder block and cylinder sleeve, method of producing cylinder block and cylinder sleeve by friction stir welding, and friction stir welding method

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