WO2006088023A1 - 通孔を有する金属製部材及びその製造方法 - Google Patents
通孔を有する金属製部材及びその製造方法 Download PDFInfo
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- WO2006088023A1 WO2006088023A1 PCT/JP2006/302543 JP2006302543W WO2006088023A1 WO 2006088023 A1 WO2006088023 A1 WO 2006088023A1 JP 2006302543 W JP2006302543 W JP 2006302543W WO 2006088023 A1 WO2006088023 A1 WO 2006088023A1
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- hole
- thickness
- metal member
- mold
- slide tool
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/24—Perforating, i.e. punching holes
- B21D28/28—Perforating, i.e. punching holes in tubes or other hollow bodies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/033—Deforming tubular bodies
- B21D26/035—Deforming tubular bodies including an additional treatment performed by fluid pressure, e.g. perforating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
- B21D53/88—Making other particular articles other parts for vehicles, e.g. cowlings, mudguards
Definitions
- the present invention provides, for example, a method of forming a bulging portion in the axial direction intermediate portion of a hollow tubular material by a hide mouth foam method and then forming a through hole in a side wall portion of the bulging portion. It can be used as a steering column and its manufacturing method with the part as a column bracket. Or
- It can also be used to form a mounting hole for mounting a door knob, direction indicator, etc. in a part of the metal plate after the metal plate constituting the automobile body is processed by the hide mouth foam method.
- a metal member that is an object of the present invention includes a metal plate member, and a portion in which the through hole is formed is a plate shape (including a flat plate shape and a curved plate shape).
- a metal plate member formed by processing a flat plate-like metal plate includes a metal tube having a through-hole formed in a tube wall portion, such as an electric sewing tube or an extruded tube.
- the steering column 1 is constructed by a nose mouth foam method (made of steel plate or aluminum alloy). ) Applying hydraulic pressure (for example, water pressure) to the inner peripheral surface of the metal tube 3, As shown in FIGS. 15 to 16, bulges outward (plastic deformation) in the radial direction.
- hydraulic pressure for example, water pressure
- FIGS. 15 to 16 bulges outward (plastic deformation) in the radial direction.
- a hollow member 11 metal tube
- a hollow member 11 metal tube
- a mold 6 having an inner surface shape that matches the outer surface shape.
- both ends of the hollow member 11 are closed with shaft pressing tools 19a and 19b, and a high hydraulic pressure of about 196 MPa (2000 kg / cm 2 ) is applied to the hollow member 11, for example.
- a high hydraulic pressure of about 196 MPa 2000 kg / cm 2
- the axially intermediate portion of the hollow member 11 is expanded radially outwardly until it is in close contact with the inner surface of the cavity of the mold 6, and the axially intermediate portion of the hollow member 11 is The bulging part 7 is formed in the part.
- the hollow member 11 is compressed in the axial direction by the double shaft pressing tools 19a and 19b to supply the material to the bulging portion 7. Prompt.
- each through hole 5 needs to be a long hole that is long in the axial direction of the steering column 1.
- Patent Documents 2 to 3 and Non-Patent Document 1 have conventionally been described as techniques for forming a through hole in a portion of a hollow member that has been inflated by a nose mouth foam method. Such Hyde mouth piercing is known. Of these, three examples of conventional techniques described in Non-Patent Document 1 will be described with reference to FIG.
- the shearing or breaking for breaking the side wall of the bulging portion 7 to form the through hole 5a starts from one side of the through hole 5a and gradually proceeds toward the other side.
- the punched piece 10a generated by the processing remains connected to the side wall of the bulging portion 7 even after the completion of the addition of the through hole 5a.
- the through hole 5b is formed by being strongly pushed into the punched hole 12 and shearing or breaking.
- the punched piece 10b generated as a result is collected in the punched hole 12, and is removed by advancing the slide tool 13 before the next processing.
- one end of the through hole 5a (the left end in FIG. 19) is a part of the side wall of the bulge 7 where the base end of the punched piece 10a is connected, and a part of the side wall is bent. Since the deformed state remains, the side wall is bent and deformed by the amount of bending deformation.
- the side wall is strongly pushed inward in the radial direction by the punch 9a. Deforms towards.
- the punched piece 10a since the punched piece 10a remains in a state of projecting radially inward from the inner surface of the bulging portion 7, the punched piece 10a may become an obstacle depending on the use of the hollow member 11.
- the method previously considered for making the steering column 1 integrally provided with the column bracket 2 as shown in FIG. 15 described above will be described with reference to FIGS. .
- a metal tube 3 that is a material and has a plate thickness T is disposed at a predetermined position in the mold 6a.
- the mold 6a is formed by a pair of mold elements 15 butting in the middle.
- the metal tube 3 includes both ends and an intermediate portion.
- a circular hole part 16 in which the half piece in the circumferential direction can be fitted with almost no gap, and a concave part 17 projecting radially outward from an intermediate part of the circular hole part 16 are provided.
- the inner surface shape of the recess 17 matches the outer surface shape of the bulging portion 7 to be formed. Further, in a part of both the mold elements 15, they are shifted from the central axis of the circular hole portion 16 toward the concave portion 17 and radially outward of the circular hole portion 16, and are aligned with each other.
- a hole 12a is provided.
- the slide tool 13a is tightly fitted into each of the holes 12a so that the slide tool 13a can advance and retreat with respect to the recess 17 respectively.
- the circumferential direction of the axially intermediate portion of the metal tube 3 Half-half force Force bulges toward the recess 17 above. That is, by applying a force that compresses the metal tube 3 in the axial direction while applying a strong force directed radially outward to the inner peripheral surface of the metal tube 3, the metal tube 3 can be As shown in FIG. 23, the die 6a is processed into a shape along the shape of the inner surface, that is, a shape having a bulging portion 7a projecting radially outward in a half piece in the circumferential direction of the intermediate portion.
- the metal plate constituting the metal tube 3 is the surface direction at the portion corresponding to the bulged portion 7a. Therefore, the metal tube 3 is compressed in the axial direction to prompt the supply of material to the bulging portion 7a.
- the metal plate is smaller than the original plate thickness 1 (see FIG. 20).
- the extent to which the plate thickness is reduced in this way also makes a difference in the bulging portion 7a. Specifically, since the amount of material supplied decreases as the distance from the base of the bulging portion 7a (lower part of FIGS. 22 to 23) decreases, the tip portion (see FIG. The upper part of 22 to 23), the more the plate thickness becomes smaller. Further, even in this tip portion, the curvature becomes large (the curvature radius force, the roughness), and the left and right corner portions in FIG.
- the thickness of the portion of the side walls 14 where the through holes 5c are to be formed is non-uniform (gradually) in the width direction of these through holes 5c (the vertical direction in Figs. 22 to 25). Change). Specifically, the cross-sectional shape of the portion where both the through holes 5c are to be formed in the both side walls 14 is a wedge shape. Further, the plate thicknesses T and T (see FIG. 24) of the side walls 14 at both edge portions in the width direction of both the through-holes 5c are large and close to the base end of the bulging portion 7a.
- a hydraulic pressure increasing pattern introduced into the metal tube 3 and a pattern (axial pressing pattern) for moving the axial pressing tool 19 forward are appropriately used.
- the bulging portion becomes extremely thin and the possibility of cracking increases.
- the increase in the axial pressing amount precedes the increase in the hydraulic pressure, the material tends to buckle.
- the axial push is preceded in the range where buckling does not occur and the final axial push amount is set larger, the difference between the plate thicknesses T and T at the both end edge portions is reduced, and The difference from the original plate thickness ⁇ ⁇ ⁇ is also small.
- the difference between the plate thicknesses ⁇ and ⁇ at the both end edges is within 5%.
- the power is preferably within 3% from the viewpoint of forming the two through holes 5c.
- the uneven thickness cannot be sufficiently eliminated.
- the bulging portion 7a is formed only on one side of the metal tube 3, as described above, the thickness of the side wall 14 where the through hole 5c is to be formed becomes uneven. In other words, the edges on both ends The difference between the thickness T and ⁇ of the minute exceeds 3% and even 5% when viewed from the side with the larger thickness.
- the tip surface 20 is parallel to the both side walls 14 in spite of the uneven thickness of the side wall 14 where the through hole 5c is to be formed.
- the slide tool 13a having a flat surface it is difficult to stably form the through hole 5c. That is, when the slide tool 13a having the simple end surface 20 as described above is used, the shape of the through-hole is complicated, such as an ellipse or an oval, or a simple circular hole.
- the opening area is large V and the through hole is machined, the partial force that the punched piece should become as a through hole cannot be completely removed, and the punched piece remains partially connected to the material. easy.
- the through-hole is formed in a portion where the plate thickness is not uniform as in the case where the through-hole 5c is formed in the side wall 14, the above-described problem is likely to occur.
- the slide tool 13a When the through-hole 5c is to be formed by the slide tool 13a having the flat tip surface 20 as described above, the slide tool 13a starts to retreat, and at the same time, a part of the side wall 14 forms a hole 12a. The opposing part begins to deform (shear) into the hole 12a. Then, when the slide tool 13a is retracted to some extent, a portion of the side wall 14 facing the punch hole 12a is a portion where the plate thickness T force S is small and the portion where the plate thickness T is also large.
- the phenomenon that a part of the portion to be extracted remains connected to the side wall 14 is that the difference in the thickness of the portion where the through hole is to be formed is larger, and the shape of the through hole is a round hole. As the shape of the hole becomes longer than in the case of, the more complicated the shape is, the more remarkable it becomes.
- the bulging portion 7 has a symmetric (or almost symmetrical) shape with respect to the central axis of the hollow member 11.
- Patent Document 1 Japanese Patent Application Laid-Open No. 8-276852
- Patent Document 2 JP-A-6-292929
- Patent Document 3 Japanese Patent Laid-Open No. 2001-314926
- Non-Patent Document l Frank- Ulrich LEITLOFF / Steffen GEISWEID, “Application of tube-hide forming technology in the automotive industry”, Journal of the JSTP vol.39 no.453 (199 8-10)
- the present invention is a part of a member made of metal and at least part of which is plate-shaped, and there is a difference in the thickness of the plate-shaped portion.
- the present invention was invented to realize a structure and method that can stably and inexpensively perform the operation of forming the through-hole in the uneven thickness portion.
- a metal member having a through hole according to the present invention is a metal part of a member at least part of which is plate-shaped, and the thickness of the plate-shaped part is different.
- a through hole is provided in the non-uniform thickness portion so as to penetrate this portion.
- the through-hole is formed in such a manner that the non-uniform thickness portion is maintained while the hydraulic pressure is held on the other surface of the non-uniform thickness portion with one surface of the non-uniform thickness portion in contact with the mold.
- a part of The part corresponding to the punched hole is formed by piercing through the throat, which is pushed into the punched hole.
- This hide port piercing is performed, for example, by simultaneously terminating the shearing phenomenon over the entire periphery of the through hole to be formed.
- the timing of the shearing processing by the piercing at the mouth opening is adjusted according to the wall thickness distribution at the periphery of the through hole to be formed.
- the timing of occurrence of cracks leading to breakage is adjusted according to the thickness distribution at the periphery of the through hole to be formed.
- the tip surface is in the direction of the inner side of the mold on the side where the thickness is smaller, according to the thickness distribution of the material in charge of the shearing process.
- a sliding tool that protrudes into the wall has a large wall thickness, and is recessed toward the outside of the mold on the side.
- the slide tool is fixed to the non-uniform thickness while holding the hydraulic pressure on the other surface of the non-uniform thickness portion. Partial force Displacement is made in the retracting direction, and a portion of the uneven thickness portion corresponding to the hole is pushed into the hole by the hydraulic pressure.
- the radius of curvature of the cross-sectional shape of the cutting edge part which is the peripheral part of the punch hole of the mold, is small on the thicker side depending on the thickness distribution of the material for which the cutting edge part is responsible for shearing. Use a mold that is formed on the small thickness side.
- a shear stress is generated in a portion corresponding to the entire periphery of the punch hole in the uneven thickness portion, a shear phenomenon is generated in this portion, and the shear phenomenon is simultaneously broken. And the through hole is formed in a portion aligned with the punched hole.
- FIG. 1 This point will be described with reference to FIG.
- metal plate 25 a plate-like part
- FIG. 1 It is sectional drawing which shows the state to do in steps.
- the so-called outer piercing and idling piercing described above is basically a shearing process by the blade edge part which is the peripheral part of the punching hole 12 provided in the mold 6, and this shearing process is seen in more detail. It is as follows. First, as shown in FIG.
- the metal plate 25 is placed in the recess generated by the retraction of the slide tool 13.
- the part enters, and this part is plastically deformed into a convex shape.
- the shearing process by the outer opening piercing is a combination of plastic deformation, shearing process and fracture.
- the shearing process is started.
- the timing according to the wall thickness distribution it is possible to form the through-holes by the above-described outer-opening piercing regardless of the plate thickness distribution.
- the point at which the formation of the shear surface 27 shown in FIG. 1 (B) starts is referred to as “shear start timing”, and the crack shown in FIG.
- the point at which 28 is penetrated in the thickness direction of the metal plate 25 and the fracture is completed and the material is completely separated is defined as the “timing of crack generation leading to fracture” (timing of the end of the shearing phenomenon).
- the portion of the metal plate 25 that forms a through hole in the non-uniform thickness portion has an outer portion as shown at the right end of FIG. If the piercing of the open mouth is performed without any special measures, the shearing phenomenon ends first at the thinnest part of the periphery of the through hole to be formed, and at this part, the crack 28 becomes the above metal. It penetrates in the thickness direction of the plate 25. As described with reference to FIG. 25, the end of the local shearing phenomenon causes the pressure to be released, and the subsequent shearing process does not proceed, resulting in the uncut portion as shown in FIG.
- the part where the wall thickness is large compared to the part where the wall thickness is small for example, the start timing of the shearing process is advanced, and the shearing process ends at the part where the wall thickness is small and the part where the wall thickness is large. Align the timing of the cracks leading to (the last break is generated all around the hole at the same time). In other words, the entire end of the through hole to be formed is aligned at the same timing of the end of the shearing phenomenon, so that complete outer opening piercing without cutting is possible.
- An advantage of implementing the present invention as described above is that it is not always necessary to strictly manage the timing of the start of cutting according to the wall thickness distribution. That is, when the through hole is formed, the last of the shearing phenomenon that occurs in the portion corresponding to the peripheral portion of the through hole is a fracture due to the penetration of the crack, and this fracture occurs at the peripheral portion of the through hole. If the shearing phenomenon has progressed to a certain extent, it will propagate along the periphery. Therefore, the timing of the above-mentioned shearing phenomenon is set so that the remaining amount of shearing is aligned with a certain degree of accuracy (the moment when a crack occurs in a part, the shearing part proceeds to a certain degree or more).
- the timing of the end of the shearing phenomenon will be practically aligned. That is, it is only necessary to adjust the timing of starting the shearing process to such an extent that breakage occurs simultaneously at the peripheral part of the through hole over the entire periphery.
- This timing adjustment can be performed relatively easily, for example, by changing the shape of the tip surface of the slide tool. Therefore, the adjustment of the shearing start timing is performed from the aspect of aligning the crack generation timing. This is a very realistic measure.
- the timing of crack generation leading to fracture is adjusted according to the thickness distribution at the periphery of the through hole to be formed. If a fracture due to a crack occurs earlier in a larger part than in a smaller part, it is possible to terminate the fracture simultaneously over the entire circumference. In other words, by adjusting the timing of crack generation leading to breakage according to the thickness distribution of the metal plate, the timing of the end of the shearing phenomenon can be aligned around the entire periphery of the through hole to be formed, External hide piercing is possible.
- This measure can be taken, for example, by modifying the mold side, specifically, by changing the radius of curvature of the cross-sectional shape of the cutting edge portion, which is the peripheral portion of the punching hole of the mold. That is, a mold is used in which the radius of curvature of the cross-sectional shape of the cutting edge portion is formed to be large on the small thickness side and small on the large thickness side in accordance with the thickness distribution of the material in charge of shearing. ,this Delays the occurrence of breakage due to cracks on the smaller wall thickness side. In this way, it is possible to align the timing of the end of the shearing phenomenon (crack generation) without adjusting the timing of starting the shearing process. It is also possible to align the timing of the end of the shearing phenomenon by combining the shape of the tip of the slide tool with the above-described device for the radius of curvature of the cutting edge.
- the technique for generating the above-described breakage simultaneously all around the former by contriving the tip shape of the former slide tool combines both the adjustment of the timing for starting shearing and the adjustment of the timing for generating cracks. Align the end of the shearing phenomenon.
- the latter technique of generating the rupture at the same time around the entire circumference by devising the radius of curvature of the cutting edge portion aligns the timing of the end of the shearing phenomenon mainly by adjusting the timing of the crack generation leading to the rupture. Therefore, the tool is designed according to the thickness distribution of the material so as to obtain the timing difference necessary to simultaneously terminate the shearing phenomenon over the entire length of the peripheral edge of the through hole to be formed.
- this part where the shear start timing should be delayed at a thin part should be given a compressive stress in the direction perpendicular to the shearing surface, or the edge of the hole ( Increase the radius of curvature of the cutting edge.
- the shear start timing should be accelerated in the thick part, so that the shear start itself is accelerated, or tensile stress is applied to this part in the initial stage of processing.
- a metal member having a through hole which is an object of the present invention, is generally a tubular member having a closed cross section because it is suitable to be combined with a hide mouth foaming method (hide mouth forming).
- the shape of the plate-like member is not particularly limited. In the case of a tubular member, either an electric sewing tube or a seamless tube (including an extruded tube) may be used.
- the portion of the plate-like member where the through hole is to be formed is not limited to the flat portion, but may be a curved portion. For example, Hide mouth forming and Hide mouth piercing can be applied to a flat plate or curved plate of a car body or the like.
- the through hole can be formed as it is, so that the machining process can be simplified.
- a typical metal member having a through hole is, for example, an outer tube for a steering column having an integrated column bracket, and the integrated column bracket is formed by, for example, hide-mouth forming.
- uneven thickness in metal parts with through holes This refers to the part where there is a difference, but only when the thickness changes continuously, it changes in stages, or changes continuously and in steps (changes in steps from the parts that change continuously) (Including parts).
- the difference between the minimum wall thickness and the maximum wall thickness is not particularly limited.
- the present invention relating to the rate of change is effective. However, considering that the larger the rate of change in wall thickness, the more difficult it is to form through-holes depending on the general piercing of the outer opening, the greater the rate of change in wall thickness, the greater the effectiveness of the present invention. Becomes bigger. That is, it is effective to implement the present invention when it is 3% or more, and it is more effective when it is 5% or more.
- the uneven thickness portion is formed by various factors. It also occurs in other plastic processing such as drawing and bending as well as in the formation of the bulge by forming the above-mentioned hide mouth. Furthermore, since it may occur in other than plastic working, the factor causing the uneven thickness portion is not limited when defining the technical scope of the present invention. Similarly, the shape of the non-uniform thickness portion is not particularly limited as described above. For example, when a pipe is bent, the outer peripheral side of the bend is thinned and the inner peripheral side of the bend is thickened, resulting in a thickness difference. Even if a flattened part is formed by applying a hide mouth forming to the bent material, a difference in wall thickness results.
- the present invention is also effective when a through hole is formed on a flat surface or curved surface in which a difference in thickness has occurred due to such a cause.
- the type of metal is not particularly limited. Various other metals and alloys may be used as well as non-ferrous alloys such as iron alloys such as steel, aluminum alloys, and copper alloys.
- the metal member having the through hole of the present invention and the manufacturing method thereof configured as described above, a part of the member made of metal and at least partially formed into a plate shape, The process of forming through-holes in non-uniform thickness parts with different thicknesses can be performed stably and at low cost.
- the plate thickness of a part of the plate-like member is not uniform. Even in this case, the difference in thickness between the side edges of the punched hole can be eliminated or reduced. For this reason As the slide tool is retracted with the uneven thickness partial force, the portion of the uneven thickness portion that faces the punched hole is torn across the entire circumference of the punched hole and The writing hole can be formed reliably.
- FIG. 1 is a partial cross-sectional view showing a state of progress of piercing of a nozzle for explaining the principle of the present invention.
- FIG. 2 is an enlarged cross-sectional view corresponding to part A of FIG. 23, showing Example 1 of the present invention in a state before the through holes are formed.
- FIG. 3 is a view similar to FIG.
- FIG. 4 is a view similar to FIG.
- Fig. 5 is a view similar to Fig. 2 but also showing a state in which through holes are formed.
- FIG. 6 is a view similar to FIG. 2, showing a modification of the first embodiment of the present invention.
- FIG. 7 is an enlarged cross-sectional view corresponding to part A of FIG. 23, showing Example 2 of the present invention in a state before the through holes are formed.
- Fig. 8 is a view similar to Fig. 7 and showing a state in which through holes are formed.
- FIG. 9 is a cross-sectional view showing three examples of a slide tool for forming a through hole as Example 3 of the present invention.
- FIG. 10 is an enlarged cross-sectional view corresponding to part A of FIG. 23, showing Example 4 of the present invention.
- Fig. 11 shows Embodiment 5 of the present invention, (A) is a side view, and (B) and (C) are each shown in a state in which portions where through holes are formed are cut in different directions. It is sectional drawing.
- FIG. 12 is a partial side view for explaining the shape of the through hole.
- FIG. 13 is a view similar to FIG. 11, showing Example 6 of the present invention.
- FIG. 14 is a view similar to FIG. 11, showing Example 7 of the present invention.
- FIG. 15 is a sectional view showing a conventional example of a steering column in which a column bracket is integrally provided.
- FIG. 16 is a partial perspective view of the same.
- FIG. 17 is a view on arrow B of FIG. 18 is a cross-sectional view taken along the line CC in FIG. 17, showing (A) the side wall portion of the column bracket and (B) a state in which the side wall portion is further expanded.
- FIG. 19 is a cross-sectional view showing three examples of a method for forming a through hole in a bulging portion formed by plastic deformation of a metal tube.
- FIG. 20 is a cross-sectional view showing a preparatory step of the method of forming a bulging portion in a metal tube and further forming a through hole in the bulging portion, as previously considered.
- FIG. 21 is a sectional view taken along the line DD of FIG.
- FIG. 22 is a cross-sectional view showing a state in which a bulge is formed in the metal tube.
- FIG. 23 is a cross-sectional view taken along line EE in FIG.
- FIG. 24 is an enlarged cross-sectional view of part A in FIG.
- FIG. 25 is a cross-sectional view similar to FIG. 24, for explaining the reason why the through hole is not formed by the previously considered method.
- the tip surface protrudes inward of the mold on the side with a small thickness, and is recessed toward the outside of the mold on the side with a large thickness.
- the most projecting portion of the front end surface of the slide tool is positioned at a portion coinciding with the inner surface of the mold. Then, this front end surface is brought into contact with one surface of the non-uniform thickness portion on the side of the non-uniform thickness portion where the plate thickness is small, and is opposed to the large side via a gap.
- This state force also forms a through hole by displacing the slide tool in the direction of retracting the non-uniform thickness partial force inside the punch hole.
- a part of the non-uniform thickness portion is a portion facing the gap, that is, a partial force on the side where the plate thickness is large.
- the portion on the side where the plate thickness is large the portion that comes into contact with the one end edge of the opening portion of the punched hole, before the other portion. Shearing is started.
- the plate thickness of this part is slightly reduced, and the difference between the plate thickness of this part and the plate thickness of the above part is small!
- the most protruding portion of the tip surface of the slide tool is protruded by the inner surface force of the mold, and the least protruding portion is positioned on a portion that is coincident with or recessed from the inner surface.
- the shape of both the portions is as described above,
- the portion of the non-uniform thickness portion that is aligned with the hole is pushed into the hole.
- the portion where the plate thickness is relatively large immediately starts to be pushed into the punched hole and shearing is started, whereas the portion where the plate thickness is small is once parallel to the other portions. Until it is deformed, it is pushed into the hole.
- the plate thickness is relatively large! /
- the partial force facing the punched hole in the uneven thickness portion is pushed into the punched hole while simultaneously breaking along the entire periphery of the punched hole. It is formed.
- a portion of the uneven thickness portion of a portion where the plate thickness is gradually changed is a portion of the bulging portion formed by inflating a portion of the material by the hide mouth foam method.
- a part of the hollow tube is inflated radially outward by a nose mouth foam method, and a through hole is formed in the side wall portion of the bulging portion formed by the inflating. Steering column. Then, the through hole is formed following the processing of the bulging portion.
- the present invention is carried out in such a form, the formation of the bulging portion and the formation of the through hole can be performed continuously without changing the material, and the manufacturing process is simplified. Cost can be reduced.
- the thickness of the portion present at such a position is gradually changed. For this reason, it is effective to form a through hole in the side wall portion according to the present invention.
- Example 1 of the present invention shows Example 1 of the present invention.
- the feature of this embodiment is that a part of the metal pipe 3 is plastically deformed radially outward by the hide mouth foam method as shown in FIGS.
- the through-hole 5c can be reliably formed by devising a process for forming the through-hole 5c in the side wall 14 of the bulging part 7a.
- the point is to make it possible. Since the point of forming the bulging portion 7a is as described above, overlapping description will be omitted or simplified, and the following description will focus on the features of the present embodiment.
- a part of the mold element 15 constituting the mold 6a corresponds to the through hole 5c in a portion of the side wall 14 where the through hole 5c is to be formed (substantially).
- Punch holes 12a having a shape (for example, oval shape) that match each other).
- a slide tool 13b for forming the above-described through hole 5c is closely fitted in the punched hole 12a so as to be capable of moving back and forth with respect to the side wall 14.
- the tip surface 20a of the slide tool 13b used in this embodiment is one end (the upper end of FIGS. 2 to 5) in the width direction (vertical direction of FIGS. 2 to 5) of the punch hole 12a (or the through hole 5c).
- Part is a flat surface 21 parallel to the inner surface of the mold element 15, and the intermediate part or the other end (the lower end part of FIGS. 2 to 5) moves away from the side wall 14 as the distance from the flat surface 21 increases.
- the inclined surface 22 is slanted.
- the slide tool 13b is advanced in the punch hole 12a and the flat surface 21 is moved to the mold. It is positioned on the same plane as the inner surface of the element 15. Accordingly, a portion of the tip surface 20a of the slide tool 13b corresponding to the inclined surface 22 is in a state of being recessed from the inner surface of the mold element 15.
- a tensile stress in the direction perpendicular to the shearing surface is applied to the portion that has entered the gap 23 in this manner, and a portion of the side wall 14 strikes the blade edge portion 26 that exists at the peripheral edge of the punch hole 12a. Shear stress is applied to the part.
- the side facing the continuous portion of the flat surface 21 and the inclined surface 22 (upper side in FIG. 2) has a slight shear surface.
- a bending stress is applied in addition to the tensile stress in the vertical direction, and a part of the side wall 14 is bent.
- a shearing stress is applied to the side (the lower side in FIG. 2) facing the cutting edge portion 26 existing at the peripheral edge of the opening 12a by the cutting edge portion 26 and the hydraulic pressure, Shearing starts at this part.
- the shape of the tip surface 20a of the slide tool 13b is devised, and the position of the tip surface 20a is appropriately restricted when the high-mouth forming process is performed. Therefore, the shearing process is started first from the thicker side (lower side in FIG. 2) of the part of the side wall 14 facing the punch hole 12a.
- the difference between the plate thicknesses T 1 and T 2 of the side wall 14 located at both edges in the width direction of the punch hole 12a can be kept small. That is,
- the slide tool 13b starts to retract in the punch hole 12a.
- shearing is started even on the side where the plate thickness is small (upper side in FIG. 3) in the part of the side wall 14 facing the punch hole 12a.
- the slide tool 13b is further retracted as shown in FIG. 4, the entire circumference of the portion (the plate thickness is large! /, Shearing progresses on the side and small! / Side and the part between them.
- FIG. 1 (C) described above almost simultaneously occurred on the entire circumference of the part of the side wall 14 facing the punch hole 12a. appear.
- the portion facing the hole 12a is Punched by the hydraulic pressure present in the inner part to form a punched piece 10c, which is pushed into the punched hole 12a.
- the peripheral edge of the portion facing the punched hole 12a is a force from the shearing process to the breakage. This breakage is caused by the fact that the shearing process starts with the partial force tip having a large plate thickness as described above.
- the punched piece 10c is not pushed out into the punched hole 12a and remains in the metal tube 3 including the bulging portion 7a. Therefore, the process and apparatus for taking out the punched piece 10c from the inside of the metal tube 3 after forming the through hole 5c are unnecessary. For this reason, it is possible to reduce the cost required for manufacturing the product, such as miniaturization (space saving) of the device for manufacturing the product including the bulging portion 7a and the through hole 5c.
- the shearing process is started by appropriately devising the shape of the tip of the slide tool 13b. Shift the timing.
- the relationship between the plate thicknesses T and T at both edges in the width direction is set so that the shearing finish timing can be easily aligned.
- the width dimension of the inclined surface 22 in the width direction is regulated based on experimental data in relation to the hydraulic pressure, the material of the metal tube 3 and the original plate thickness.
- the punched piece 10c pushed into the punched hole 12a forms, for example, a bulging portion 7a, and further a metal tube 3 having a through hole 5c formed in the side wall 14 of the bulging portion 7a.
- the slide tool 13b is advanced and pushed out from the punching hole 12a so that it can be easily taken out from the die 6a.
- the metal tube 3 is made of a magnetic material such as mild steel plate, the metal tube 3 is taken out from the mold 6a, and then the punched piece 10c is adsorbed by a magnet and taken out from the hole 12a. You can also.
- a discharge passage having a size that allows the punched piece 10c to pass from the punched hole 12a to the external space can be provided inside the mold 6a.
- the punched piece 10c pushed into the punched hole 12a by the hydraulic pressure introduced into the metal tube 3 is taken out of the metal tube 3 from the mold 6a, and then the punched hole is separately provided.
- the air is discharged from the hole 12a by air pressure or hydraulic pressure introduced into the 12a.
- the punched piece 10c pushed into the punched hole 12a with the processing of the through hole 5c is discharged from the punched hole 12a prior to the next processing operation.
- the flat surface 21 of the tip surface 20a of the slide tool 13b shown in FIG. 2 is positioned at the same position as the inner surface of the mold element 15 in the initial stage of the through hole forming process. It exists.
- the flat surface 21 may exist at a position slightly recessed from the inner surface.
- a portion having a small plate thickness is slightly pushed into the punched hole 12a. Therefore, the deviation in the start timing of the shearing process is reduced between the portion where the plate thickness is large and the portion where the plate thickness is small.
- Fig. 2 or Fig. 6 is determined by design depending on the difference between the thick and small parts (conditions are set by experiment).
- FIGS. 7 to 8 show Example 2 of the present invention.
- the tip surface 20b of the slide tool 13c used in this example is also the same as the flat surface 21a facing the portion of the side wall 14 where the comparative plate thickness is small, as in the case of Example 1 described above.
- the inclination angle of the inclined surface 22a is made gentler than that of the inclined surface 22 (see FIGS. 2 to 6) of the slide tool 13b used in the first embodiment.
- a hydraulic pressure is introduced into the inside of the metal tube 3 with the tip of the slide tool 13c protruding slightly from the inner surface of the mold element 15.
- Hide port forming is performed in which a part of the metal tube 3 is plastically deformed radially outward to form the bulging portion 7a. That is, the flat surface which is the most protruding portion of the tip surface 20b of the slide tool 13c.
- the carrier surface 21a is projected from the inner surface force of the mold element 15.
- a portion of the inclined surface 22a that is farthest from the flat surface 21a, that is, a portion of the tip surface 20b that is least projected is a portion that coincides with the inner surface of the mold element 15.
- a hydraulic pressure is introduced into the inside of the metal tube 3, and a part of the metal tube 3 is bulged outwardly in the radial direction to form the bulging portion 7a.
- the tip end portion of the slide tool 13c protrudes from a part of the inner surface of the mold element 15, the side wall constituting the bulge portion 7a is formed in the state where the bulge portion 7a is formed.
- a part of 14 bends following the tip of the slide tool 13c. That is, the partial force of the side wall 14 that is in contact with the flat surface 21a is farthest from the inner surface of the mold element 15, and the partial force that is in contact with the inclined surface 22a along the inclined surface 22a. It inclines, and inclines in the direction in which the distance from the inner surface of the mold element 15 increases as the directional force is applied to the flat surface 21a.
- the part on the side with the relatively large plate thickness (the lower side in FIG. 7) is deformed in the direction opposite to the direction of deformation when forming the through hole 5c, but the amount of deformation remains very small.
- the plate thickness is T and
- the part facing the punched hole 12a is punched out by the hydraulic pressure existing in the inner part of the side wall 14 to become a punched piece 10c. Is pushed into.
- cracks are generated almost simultaneously on the entire circumference of the part of the side wall 14 facing the hole 12a in addition to shifting the timing of starting the shearing process. Therefore, it can be considered that the difference in the thickness of each part is also contributed. That is, as shown in FIG. 7, when the slide tool 13c is retracted from the side wall 14 in the punch hole 12a, the partial force of the side wall 14 that matches the punch hole 12a is within the punch hole 12a. Is pushed into. At this time, the portion having the relatively large plate thickness T is
- the portion 6 is once deformed until it is parallel to the other portion, and is then pushed into the punched hole 12a. And the above plate thickness T
- the end portion may be positioned in a portion slightly recessed from the inner surface of the mold element 15.
- the portion of the side wall 14 of the bulging portion 7a that contacts the portion is slightly punched. Since it is pushed into 12a, the shearing process starts earlier in this part, and the thickness of this part tends to be slightly thinner.
- a part of the metal tube 3 is bulged to form a bulging part 7a, and the slide tool 13c is formed on a part of the side wall 14 of the bulging part 7a.
- the difference between the thicknesses T and T of the portion of the side wall portion 14 corresponding to the both edges in the width direction of the punched hole 12a in the state where the front end surface 20b is abutted, Preferably within 30%, more preferred
- the manufacturing method of this example is appropriate when the difference in thickness is larger than that of Example 1 described above.
- the end of the inclined surface 22a which is the most concave among the tip surfaces 20b and which is far from the flat surface 21a may coincide with the inner surface of the mold element 15 as shown in the figure. Alternatively, it may be located in a slightly recessed portion as described above, or may be slightly protruded from the inner surface.
- Fig. 9 shows, as a third embodiment of the present invention, two slide tools 13b and 13c used in the first embodiment and the second embodiment described above, and two slide tools that can be replaced with the slide tools 13b and 13c.
- a total of 3 slide tools are shown, including the example. That is, the shape of the tip of the slide tool used when forming the through hole 5c as in the above two embodiments is an inclined surface having a linear cross-sectional shape as shown in FIG. Not only the slide tool 13b (13c) provided with 22 and 22a, but also provided with curved inclined portions 24 and 24a whose cross-sectional shape is an arc shape as shown in FIGS.
- the cross-sectional shape of the inclined surface may be a composite surface in which straight lines and curves are combined.
- the inclination angle ⁇ of the inclined surface 22 (22a) formed on the tip surface 20a (20b) of the slide tool 13b (13c) is the length direction of the tip surface 20a (20b) (front and back direction in FIG. 9). It can also be changed in the middle part.
- the width W of the flat surface 21 (21a) can be changed or both can be changed instead of the inclination angle ⁇ of the inclined surface 22 (22a). In this way, the thickness distribution of the material
- the shape of the tip face 20a (20b) is changed three-dimensionally as necessary.
- (A) in Fig. 9 is a force indicating the slide tool 13b (13c) used in the first embodiment and the second embodiment.
- the dimensions of such a slide tool 13b (13c) are as follows.
- the regulation is as follows. That is, the width of the slide tool 13b (13c) is W, the width of the flat surface 21 (21a) of the tip surface 20a (20b) of the slide tool 13b (13c) is W, and the same is applied to the inclined surface 22 (22a).
- the width W of the slide tool 13b (13c) is determined according to the width of the through hole 5c to be formed, but the remaining width W and the inclination angle ⁇ are determined by the material of the metal tube 3 and the plate.
- the optimum value is selected by experiment. If the width W of the flat surface 21 (21a) is too large, By projecting the flat surface 21 (21a), the effect of adjusting the timing of starting shearing and the timing of occurrence of cracks leading to fracture can be sufficiently obtained. Conversely, the width W is small.
- the flat surface 21 may be omitted. If the tilt angle ⁇ is too small, the adjustment effect of each timing by retracting the slide tool 13b (13c) can be obtained. On the other hand, when the inclination angle ⁇ is too large, it is difficult to ensure the mechanical strength of the flat surface 21 (21a), and the thick wall side is easily sheared excessively, and the adjustment of each timing described above is difficult. It becomes difficult.
- FIGS. 9B and 9C show a partially cylindrical concave curved surface ⁇ in the case of FIG. 9B ⁇ or a convex curved surface ⁇ Fig. 9
- the force is formed by replacing the inclined portions 24, 24a of the inclined surface 22 (22a) with respect to the slide tools 13d, 13e formed with such inclined portions 24, 24a. Select the dimensions of each part within the following range.
- the value of the radius of curvature R of the cross-sectional shape of the inclined parts 24, 24a can be arbitrarily set. For each value, selecting the optimum value by experiment according to the material and thickness of the metal tube 3 is the same as in the case of the slide tool 13b (13c) shown in Fig. 9 (A). is there.
- the protruding amount S (Fig. 7) or the recessed amount S (Fig. 6) of the tip surfaces 20a, 20b of the slide tools 13b, 13c from the inner surface of the mold element 15 is a through hole in the side wall 14. Based on the wall thickness T (corresponding to T in Fig. 2)
- FIG. 10 shows a fourth embodiment of the present invention.
- the mold 6 side is devised. That is, the curvature radii of the cross-sectional shapes of the blade edge portions 26a and 26b existing at both edges in the width direction of the opening peripheral edge of the punch hole 12b formed in the mold element 15 facing the side wall 14 where the through hole is to be formed are mutually equal. It is different. Specifically, the radius of curvature of the cross-sectional shape of the lower blade edge portion 26a in FIG. 10 where the thicker side of the side wall 14 is to be sheared is made smaller (sharp edge). On the other hand, the radius of curvature of the cross-sectional shape of the upper blade edge portion 26b in FIG. The tip surface 20 of the slide tool 13 inserted into the punched hole 12b is flat over the entire surface.
- the tip surface 20 of the slide tool 13 in addition to changing the radius of curvature of the cross-sectional shape of each of the blade edge portions 26a, 26b, the tip surface 20 of the slide tool 13 as in Embodiments 1 to 3 described above. It is also possible to change the shape of Specifically, it is necessary to reduce the sensitivity to shearing. On the side where the plate thickness is small, the radius of curvature of the cross-sectional shape of the cutting edge is increased, and the tip surface 20 of the slide tool 13 protrudes into the mold element 15. To delay the start of shearing. On the other hand, on the side where the plate thickness is large, the radius of curvature of the cross-sectional shape of the cutting edge portion is reduced, and the tip surface 20 of the slide tool 13 is recessed outward of the mold element 15 to promote shearing.
- FIGs 11 to 12 show Example 5 of the present invention.
- a deformed through-hole 5d is formed in the side wall 14 of the bulging portion 7a formed by plastic deformation of a part of the metal tube 3 radially outward by the no-idroform method. Shows about the case.
- This through hole 5d is formed by superimposing an oval portion having a relatively small width dimension as shown in FIG. 12A and an oval portion having a relatively large width dimension as shown in FIG. And a keyhole shape as shown in (C).
- this keyhole-shaped through hole 5d is processed at once by a slide tool having a cross-sectional shape of a keyhole.
- the shape of the tip surface of the slide tool is formed in accordance with any of the embodiments described above.
- Such a keyhole-shaped through-hole 5d can be processed when the plate thickness is uniform, and of course, if the present invention is applied, even if the plate thickness is non-uniform, it can be made of metal. Regardless of whether the member is in the shape of a ring-shaped force plate, it can be reliably processed by piercing with a groove.
- the shape of the part where the through hole 5d is to be formed in a part of the metal member may be any of a flat surface, a partial arc surface, a curved surface, and the like (the tip surface shape of the slide tool is matched to that). .
- FIG. 13 shows Embodiment 6 of the present invention.
- the aspect ratio is large (slit-like) on the side wall 14 of the bulging portion 7a formed by plastically deforming a part of the metal tube 3 radially outward by the hide mouth foam method. Insert the through-hole 5e and the inclined part 29 of this bulge 7a. It shows the case of forming in a straddling state.
- the shape of the front end surface of the slide tool is matched with any of the embodiments described above, and is formed according to the outer surface shape of the side wall 14 where the through hole 5e is to be formed.
- FIG. 14 shows a seventh embodiment of the present invention.
- a keyhole-shaped through hole 5f is formed on the side wall 14 of the bulging portion 7a formed by plastically deforming a part of the metal tube 3 radially outward by the hide mouth foam method.
- the case where the bulging portion 7a is formed so as to straddle the inclined portion 29 is shown.
- the shape of the tip surface of the slide tool is matched with any of the embodiments described above, and is formed according to the shape of the outer surface of the side wall 14 where the through hole 5f is to be formed. .
- the metal pipe used in the experiment was a carbon steel pipe for machine structure (STKM11A), the outer diameter was 60.5 mm, the wall thickness was 2. Omm, and the total length was 500 mm.
- the mechanical test values of this material are: yield strength S300MPa, tensile strength 400MPa, elongation 0%.
- the length of the oblong hole for forming the through hole was 60mm in the major axis direction and 10mm in the minor axis direction.
- the tube expansion rate at the bulge formed by the Io, Ido mouth forming is about 30%, the plate thickness is It was 1.8 mm on the small side and 2. Omm on the large side.
- the amount of protrusion s of the flat surface at the initial position was variously changed. These values are shown in Table 1 below together with the experimental results.
- the comparative example in Table 1 is a case where a slide tool having a flat tip surface is used.
- the shape of the tip surface of the slide tool should be selected appropriately, and adjusted by adjusting the timing of shearing start and the occurrence of cracks leading to fracture.
- the shearing phenomenon can be terminated at the same time on the entire periphery of the through hole, and the entire periphery can be broken. For this reason, it is possible to perform complete hide-piercing without any uncut portion even on both side walls of the bulging portion having a difference in plate thickness.
- a metal tube processed product in which through holes are formed in both side walls of the bulging portion by the method of the present invention can be used as an outer tube for a steering column.
- the outer tube obtained was of a very high quality with an integrated column bracket without welds and a high drilling quality on both side walls of the bulge. Moreover, since the formation of the bulging part can be efficiently performed through a series of operations in the same mold, the economy has become very high.
- the number of through holes formed in the metal member is not limited. That is, through hole It is possible to implement the present invention by providing the mold with the necessary number of punch holes and slide tools even if the number is one or two or three or more.
- the shape of the through-hole to be formed is not only a simple circle, but also various shapes such as an oval, an ellipse, a substantially square, or a combination of these or a more complicated shape. It can be applied to the formation of through holes.
- the structures of Examples 1 to 7 described above can be combined as appropriate. In this case, for example, it is conceivable that a plurality of through holes having different shapes are formed simultaneously by hide port piercing using a mold having a plurality of punch holes and a slide tool.
- the present invention when the present invention is applied to form a through hole in a bulging portion formed by plastic deformation of a metal tube radially outward, the metal tube is bulged in one direction.
- the present invention can be applied not only to the case but also to the case where the entire circumference bulges. That is, even when the metal tube is swelled over the entire circumference, there is a non-uniform thickness portion with a difference in plate thickness due to a partial change in the degree of bulge, etc. If it is necessary to form a through hole in the portion, the present invention can be applied.
- the present invention is not limited to the case where the through hole is formed in the bulged portion of the hollow member, and the through hole is formed in a non-uniform thickness portion having a difference in plate thickness among various metal members. It can be used in some cases.
- each of the illustrated examples shows a case where a non-uniform thickness portion having a difference in thickness is perforated (hydrophasing).
- the thickness (sheet thickness) is the same, there is a difference in the degree of work hardening. Similar problems can arise. For this reason, the timing for starting shearing in this part where the shearing phenomenon should be terminated at the same time is adjusted according to the degree of work hardening in such a part where work hardening is not uniform. You can).
- a portion where the degree of work hardening is significant is made to correspond to the thickness (thickness) portion in the description of each embodiment described above, and the degree of work hardening is low (or work hardening).
- the part which is not) is made to correspond to the part which is also thin (thin).
- the degree to which the shear start timing is shifted depending on the degree of work hardening is obtained through experiments, as in the case of uneven thickness. Furthermore, it goes without saying that the present invention can be implemented with respect to portions where the thickness is not uniform and the force is different in the degree of work hardening. In this case as well, the degree to which the timing is shifted is regulated according to the thickness and work hardening by experiment.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Punching Or Piercing (AREA)
Abstract
Description
Claims
Priority Applications (3)
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CN2006800015000A CN101090780B (zh) | 2005-02-15 | 2006-02-14 | 具有通孔的金属制构件及其制造方法 |
EP06713684.6A EP1852196B1 (en) | 2005-02-15 | 2006-02-14 | Method of manufacturing a metal member with through hole |
PL06713684T PL1852196T3 (pl) | 2005-02-15 | 2006-02-14 | Sposób wytwarzania metalowego elementu z otworem przelotowym |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
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JP2005-037851 | 2005-02-15 | ||
JP2005037851 | 2005-02-15 | ||
JP2005-040175 | 2005-02-17 | ||
JP2005040175 | 2005-02-17 | ||
JP2006025296A JP4879596B2 (ja) | 2005-02-15 | 2006-02-02 | 通孔を有する金属製部材の製造方法 |
JP2006-025296 | 2006-02-02 |
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WO2006088023A1 true WO2006088023A1 (ja) | 2006-08-24 |
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PCT/JP2006/302543 WO2006088023A1 (ja) | 2005-02-15 | 2006-02-14 | 通孔を有する金属製部材及びその製造方法 |
Country Status (6)
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EP (1) | EP1852196B1 (ja) |
JP (1) | JP4879596B2 (ja) |
KR (1) | KR100948711B1 (ja) |
CN (1) | CN101090780B (ja) |
PL (1) | PL1852196T3 (ja) |
WO (1) | WO2006088023A1 (ja) |
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KR20120052377A (ko) * | 2009-08-05 | 2012-05-23 | 지아이. 디아이. 메카니카 에스.피.에이. | 중공-바디 부재 내에 개구를 형성하기 위한 방법 및 상기 방법으로 구현된 하나 또는 그 이상의 개구를 가진 중공-바디 부재 |
EP2647544B1 (en) | 2011-02-25 | 2015-09-30 | NSK Ltd. | Steering column device |
JP5408176B2 (ja) * | 2011-04-05 | 2014-02-05 | 日本精工株式会社 | ステアリングコラムの製造方法 |
JP5494587B2 (ja) * | 2011-08-01 | 2014-05-14 | 日本精工株式会社 | テレスコピックステアリング装置 |
JPWO2013039102A1 (ja) * | 2011-09-16 | 2015-03-26 | 松陽産業株式会社 | 板状材料の孔開け方法および孔開け装置 |
JP5899913B2 (ja) * | 2011-12-27 | 2016-04-06 | 新日鐵住金株式会社 | 鉄道車両用台車枠及び製造方法、並びにその台車枠を備えた台車 |
JP6003395B2 (ja) * | 2012-08-23 | 2016-10-05 | 日本精工株式会社 | テレスコピックステアリング装置 |
CN104338818B (zh) * | 2013-08-01 | 2016-12-28 | 浙江摩多巴克斯科技股份有限公司 | 一种内高压成形设备 |
NL1040477C2 (en) * | 2013-11-01 | 2015-05-04 | Bosch Gmbh Robert | Method for manufacturing a transverse segment for a pushbelt for a continuously variable transmission and a transverse segment thus obtained. |
CN106694690A (zh) * | 2016-11-16 | 2017-05-24 | 东莞汉旭五金塑料科技有限公司 | 中空管开孔成型的冲压模具 |
JP6810265B2 (ja) * | 2017-06-28 | 2021-01-06 | 貴嗣 飯塚 | 金属板の切断方法,金属成形体の製造方法及び金属成形体 |
JP7115354B2 (ja) * | 2019-02-15 | 2022-08-09 | トヨタ自動車株式会社 | ステアリングサポートの固定方法及び固定装置、インストルメントパネルリインフォースメント本体の変形確認方法 |
CN110107013A (zh) * | 2019-06-06 | 2019-08-09 | 江门格瑞德光电科技有限公司 | 一种具有灯光效果的吊顶天花板 |
CN112692150A (zh) * | 2020-12-11 | 2021-04-23 | 星火智慧(杭州)信息科技有限公司 | 一种分集水器内胀机 |
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- 2006-02-14 PL PL06713684T patent/PL1852196T3/pl unknown
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Also Published As
Publication number | Publication date |
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CN101090780B (zh) | 2010-04-21 |
JP2006255785A (ja) | 2006-09-28 |
CN101090780A (zh) | 2007-12-19 |
KR100948711B1 (ko) | 2010-03-22 |
JP4879596B2 (ja) | 2012-02-22 |
PL1852196T3 (pl) | 2013-10-31 |
KR20070084481A (ko) | 2007-08-24 |
EP1852196A4 (en) | 2010-04-21 |
EP1852196B1 (en) | 2013-04-24 |
EP1852196A1 (en) | 2007-11-07 |
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