CN103363059A - Central spindle for welding resin, composite component and manufacturing method of central spindle - Google Patents
Central spindle for welding resin, composite component and manufacturing method of central spindle Download PDFInfo
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- CN103363059A CN103363059A CN2012101002927A CN201210100292A CN103363059A CN 103363059 A CN103363059 A CN 103363059A CN 2012101002927 A CN2012101002927 A CN 2012101002927A CN 201210100292 A CN201210100292 A CN 201210100292A CN 103363059 A CN103363059 A CN 103363059A
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Abstract
The invention provides a central spindle for welding resin, a composite component using the central spindle and a manufacturing method of the central spindle, wherein the central spindle can improve the joint strength between a resin peripheral material and a central spindle body easily. The central spindle body (20) is embedded into an embedding hole (31) of the resin peripheral material (30) and induction heating is carried out. When the resin peripheral material is welded to the circumferential face (21) of the central spindle body, a flat inner wall face (32) is arranged in the embedding hole of the resin peripheral material, and the circumferential face of the central spindle body is provided with a plurality of rib-like protruding parts (26) and flat parts (25), wherein the rib-like protruding parts (26) are formed in the crosscutting circumferential direction and arranged in parallel in the circumferential direction, and the flat parts (25) arranged on the two end sides of the rib-like protruding parts (26). The tops of the rib-like protruding parts make contact with the flat inner wall face and the flat parts are opposite to the flat inner wall face by embedding the embedding hole of the resin peripheral material into the circumferential face of the central spindle body, and then induction heating is utilized for enabling the resin peripheral material to be welded to concave-convex parts (24) and the flat parts.
Description
Technical field
The present invention relates to by mandrel is embedded in the embedding hole of resin periphery material and to the integral body of mandrel carry out induction heating make the welding of resin periphery material the resin welding on the side face of mandrel with mandrel and the resin welding with mandrel (below, sometimes also with it referred to as mandrel) side face on welding resin periphery material and the composite component that is shaped and the method for making this composite component.
Background technique
In the past, the composite component that welding resin periphery material formed on the side face of mandrel is used in various members, device.This composite component being applied in the situation of the worm gear of driven steering device for example, in order to ensure the reliability of steering wheel operation, the durability of device etc., require to engage reliably between mandrel and the resin periphery material.
In the past, motion had several by making mandrel be embedded in the embedding hole of resin periphery material and carrying out the technology of induction heating welding resin periphery material on the side face of mandrel.For example, in following patent documentation 1, disclose the method for fixing metal wheel hub on resin forming article.In the method, at first, to the resin surface of contact of metal forming body, be that the side face of mandrel is implemented concavo-convex processing.Form the through hole of the diameter slightly less than the external diameter of metal forming body at resin forming article.Concavo-convex working surface at the metal forming body is coated with binding material, resin forming article is heated and makes the diameter expansion of through hole, and the metal forming body is pressed in the through hole.Afterwards, by high-frequency induction heating, the Metal Contact of resin forming article partly is in more than the melt temperature, and resin forming article is fused on the metal forming body.Adopt the method for patent documentation 1, can make expeditiously the such formed article of flat gear, wheel that is consisted of by resin and metal.
In following patent documentation 2, record the manufacture method of worm gear.In the method, at first, form periphery jog along circumferential array in the periphery of metal mandrel, form interior all jogs along circumferential array in the corresponding shape of periphery jog of the interior Zhou Yiyu mandrel of resinous ring gear.Sandwiched binder between ring gear and mandrel and periphery jog and interior all jogs are fastened afterwards, utilizes radiowelding that metal mandrel is combined with resinous ring gear.In the method for patent documentation 2, can guarantee the Adhesion force between metal core axle and resin ring generating gear, and can improve the degrees of freedom of design.
Make mandrel be embedded in the embedding hole of resin periphery material and carrying out in the technology in the past of induction heating, the disclosed content of arbitrary document such as patent documentation 1 and 2, side face at mandrel forms concaveconvex shape, has improved the bond strength that is produced by the welding between resin periphery material and the mandrel.For example, in patent documentation 1, in order to improve bond strength, implement the annular knurl processing of 1mm～3mm etc.In patent documentation 2, in order to improve Adhesion force, sawtooth outside the periphery of metal mandrel forms.
Patent documentation 1: TOHKEMY 2003-118006 communique
Patent documentation 2: TOHKEMY 2001-141033 communique
In method in the past, by forming significantly the concaveconvex shape of mandrel, improved the bond strength of resin periphery material with respect to mandrel.
But, in the situation of the concaveconvex shape that forms significantly mandrel, utilizing annular knurl processing when mandrel forms concaveconvex shape, add the larger plus-pressure of needs in man-hour or need machining.And, forming in the situation of larger concaveconvex shape along height (or degree of depth) direction on the mandrel, as as described in the documents 2, can carry out chimeric by on the inner peripheral surface of resin periphery material, with the shape corresponding with the concaveconvex shape of mandrel concaveconvex shape being set also.Therefore, for improving the bond strength of resin periphery material with respect to mandrel, need the cost time.
Summary of the invention
Therefore, the present invention take provide can easily improve and resin periphery material between the resin welding mandrel of bond strength as the 1st purpose, use this mandrel to improve the composite component of bond strength as the 2nd purpose to provide.In addition, take manufacture method that the composite component that can easily improve the bond strength between mandrel and resin periphery material is provided as the 3rd purpose.
Even mandrel is embedded in the embedding hole of resin periphery material and carries out induction heating, if the resin of resin periphery material does not enter the concavo-convex working surface of mandrel fully, then also can between concavo-convex working surface and resin periphery material, produce the not weld in trickle gap.When producing not weld, the bond strength between mandrel and the resin periphery material can correspondingly reduce, and resin periphery material reduces with respect to the circumferential bond strength of mandrel, the bond strength of central axial direction.
In order to increase the bond strength between mandrel and the resin periphery material, in the situation that the concaveconvex shape with the concavo-convex working surface of mandrel increases along height (or degree of depth) direction, what mandrel contacted with resin periphery material under the chimeric status before welding is spaced apart or the area of contact minimizing.When under this state, carrying out induction heating, can not be used to make from the heat of mandrel the equably melting of inner peripheral surface of resin periphery material, produce not puddle increase or local superheating and produce the part of the inhomogeneous deformation of resin.Even the inner peripheral surface at resin periphery material arranges concaveconvex shape, also can produce not puddle, superheat section at the concaveconvex shape of mandrel and the inconsistent part of concaveconvex shape of resin periphery material.
The following opinion of as a result new discovery: at the superheat section that prevents resin and when utilizing induction heating to make the welding of resin periphery material on mandrel, resin can not enter into all sites of the jog of mandrel, generate not weld on the surface of jog, can not improve fully bond strength.
Based on this opinion, realize the resin welding mandrel of the present invention of the 1st purpose, by making this mandrel be embedded in the embedding hole of resin periphery material and carrying out induction heating, and make the welding of resin periphery material on side face, this mandrel has a plurality of rib shape teats and is provided in respectively the par of the both end sides of rib shape teat at side face, these a plurality of rib shape teats form and circumferentially side by side configuration of edge along the circumferential direction of crosscut, when this mandrel is embedded in the embedding hole of resin periphery material, between adjacent rib shape teat, be formed with the gap, the distance from the central axis of mandrel to the par on complete cycle less than the distance at the top from central axis to rib shape teat.
Adopt resin welding mandrel of the present invention, can utilize a plurality of rib shape teats with the whole mating face melting of resin periphery material, resin can enter into gap between a plurality of rib shape teats of mandrel and all sites of par fully.Therefore, can easily improve bond strength between mandrel and the resin periphery material.
Be particularly preferably, the height of a plurality of rib shape teats is below the 1mm, and the gap between the adjacent rib shape teat is below the 2mm.
A plurality of rib shape teats are fit to be set to than the par height below the outstanding 1mm laterally.The width along central axis of the par of mandrel is particularly suitable for being made as 0.5 times～1 times of largest interval in the gap between the adjacent rib shape teat.
Realize the composite component of the present invention of the 2nd purpose, have above-mentioned resin welding mandrel and the resin periphery material of welding on the side face of this mandrel.
Adopt this composite component, owing to using the mandrel of above-mentioned structure, therefore can improve the bond strength between mandrel and the resinous member.
The present invention who realizes the 3rd purpose is by making mandrel be embedded in the embedding hole of resin periphery material and carrying out the manufacture method that induction heating makes the composite component of resin periphery material welding on the side face of mandrel, preparation is provided with along the circumferential direction of crosscut at side face and forms and a plurality of rib shape teats of the circumferential side by side configuration in edge and the mandrel of the par of the both end sides that is configured in rib shape teat, preparation is provided with the resin periphery material of smooth internal face in embedding hole, be nested on the side face of mandrel by the embedding hole that makes resin periphery material, and the top that makes a plurality of ribs contacts with smooth internal face, and make the par relative with smooth internal face, carry out afterwards induction heating, make the welding of resin periphery material at a plurality of rib shape teats of mandrel, on between a plurality of rib shape teats and the par.
Make if so composite component, owing to the planar inner wall face is set in the embedding hole of resin periphery material and this planar inner wall face is contacted with a plurality of rib shape teats, therefore, the position that contacts with rib shape teat of reliably melting planar inner wall face.And, if make it enter into all sites and welding between rib shape teat by melting fully and resin welding with relative planar inner wall face between a plurality of rib shape teats of mandrel and a plurality of rib shape teat, then the planar inner wall face of the par of mandrel and resin periphery material can both welding, and the smooth wall of resin periphery material is engaged with the side face of mandrel with enough intensity.And, only by the side face at mandrel a plurality of rib shape teats and par are set, arrange and the contacted planar inner wall face of a plurality of rib shape teats at resin periphery material, just can easily improve the bond strength of composite component.Thereby, need to not be provided for chimeric concaveconvex shape at resin periphery material.
In the manufacture method of this composite component, preferably be nested on the side face of mandrel by the embedding hole that makes resin periphery material, make the par relative separately with the internal face of resin periphery material.
Be particularly preferably, the height of a plurality of rib shape teats is below the 1mm, and the gap between the adjacent rib shape teat is below the 2mm.
A plurality of rib shape teats are fit to be set to than the par height below the outstanding 1mm laterally.The width along central axis of the par of mandrel is particularly suitable for being made as 0.5 times～1 times of largest interval in the gap between the adjacent rib shape teat.
In the manufacture method of this composite component, after resin periphery material was fused on the mandrel, by the cutting end face, the par of removing mandrel and resin periphery material be the part of complete welding not.
Adopt resin welding mandrel of the present invention, owing to having a plurality of rib shape teats and the par that forms along the circumferential direction of crosscut at side face, therefore, can provide a kind of and can improve the side face of mandrel and the mandrel of the bond strength between the resin periphery material.
Adopt composite component of the present invention, owing to using the mandrel of said structure, therefore, can provide a kind of composite component that can improve the bond strength between mandrel and the resinous member.
Adopt the manufacture method of composite component of the present invention, because the side face at mandrel arranges a plurality of rib shape teats and the par that forms along the circumferential direction of crosscut, the planar inner wall face is set in the embedding hole of resin periphery material, make the embedding hole tabling of the side face of mandrel and resin periphery material and carry out induction heating, therefore, can provide a kind of manufacture method that can improve the composite component of the bond strength between mandrel and the resin periphery material.
Description of drawings
(a) of Fig. 1 is the composite component of expression embodiments of the present invention, represents local plan view with section, (b) is the side view that represents the part of composite component with section.
(a) of Fig. 2 is the plan view that mandrel is used in the resin welding of embodiments of the present invention, (b) is to represent the resin welding side view of the part of mandrel with section.
Fig. 3 is the local expanded view that the rib of mandrel is used in the resin welding of expression embodiments of the present invention.
(a) of Fig. 4 is the sectional view of the resin welding of the expression embodiments of the present invention state before with welding between the rib of mandrel and the resin periphery material, (b) is the sectional view that the state after the welding between the rib of mandrel and the resin periphery material is used in the welding of expression resin.
(a)～(e) of Fig. 5 is the figure of manufacturing process of the composite component of explanation embodiments of the present invention.
Embodiment
Below, referring to figs. 1 through Fig. 5 embodiments of the present invention are described.
Shown in Fig. 1 (a), (b), the composite component 10 of this mode of execution is the roughly circular plate shape centered by axis L, has the resin welding with mandrel 20 and the resin periphery material 30 of welding on the side face 21 of this mandrel 20.This composite component is the example that driven steering device is used the worm gear blank.The worm gear blank is the intermediate that can make the worm gear of driven steering device by formative gear groove on outer surface.
Such as Fig. 2 (a), (b) and shown in Figure 3, the mandrel 20 of composite component 10 is the roughly circular plate shape that has specific length in the axis L direction, is provided with the penetration hole 22 that forms the constant cross-section shape along axis L at the center.One end face of mandrel 20 forms smooth, is formed with the hollow part 23 of annular groove shape in the other end.Side face 21 forms abreast along axis L, and has in circumferential total length and be set to the jog 24 of ring-type and form respectively the par 25 of cross section circle at the two ends along the direction of axis L of jog 24.
The shape of each rib shape teat 26 is preferably: when induction heating described later, under the contacted state of internal surface of each rib shape teat 26 and the embedding hole 31 of resin periphery material 30, be easy to make the shape of resin melting, and preferably in the shape of the side face and the bond strength between the resin component element that are easy to guarantee mandrel after the welding.Therefore, preferably make the shape of most rib shape teats 26 identical, preferably make the shape of whole rib shape teats 26 identical.
In this embodiment, whole rib shape teats 26 all forms identical shaped.As shown in Figure 3, each rib shape teat 26 is in circumferential sectional shape top 26a narrower and chevron or general triangular shape that bottom 26b is wider.Bi-side can form plane or curved surface etc. any.If such shape, then when induction heating described later, melting resin is easy to enter in the gap 27 between the adjacent rib shape teat.
Top 26a can be curved surface or plane, also can form pointed shape.The shape of bottom 26b between the adjacent rib shape teat 26 is preferably plane or curve form.If such bottom 26b then when induction heating, can make melting resin be filled into fully in the 26b of bottom.
The bi-side of each rib shape teat 26 can symmetry with respect to top 26a also can be for asymmetric.The gradient of bi-side does not distinguishingly limit, but each side for example is 30 degree～60 degree with respect to the maximum angle θ of the normal of the side face 21 of mandrel 20, preferably 40 degree～50 degree.If maximum angle θ is too small, then the gap 27 between the adjacent rib shape teat 26 is darker, and therefore, when induction heating described later, melting resin is difficult to enter in the gap 27.On the other hand, if maximum angle θ is excessive, then the gap 27 between the adjacent rib shape teat 26 is more shallow, therefore, is difficult to obtain the mechanical fastening power that makes progress in week of 30 of rib shape teat 26 and resin periphery materials.
Both can be parallel with respect to axis L along each rib shape teat 26 that the circumferential direction of crosscut forms, also can tilt with respect to central axis.If each rib shape teat 26 is shapes parallel with respect to axis L, then can utilizes to forge and make mandrel 20.In addition, the shape along the direction of axis L of each rib shape teat 26 also can change in the longitudinal direction to some extent, if but be constant cross-section shape or convex form in total length, then easily utilize to forge and make mandrel 20.
The height H of each rib shape teat 26 is preferably below the 1mm.The height H of this rib shape teat 26 is the poor of the distance of the top 26a from axis L to each rib shape teat 26 and the distance from axis L to the bottom 26b the adjacent rib shape teat 26.If the height H of each rib shape teat 26 is too high, then the degree of depth in the gap 27 between the adjacent rib shape teat 26 is excessively dark, and melting resin is difficult to enter fully.On the other hand, the height H of each rib shape teat 26 is preferably more than the 0.5mm, is particularly preferably more than the 0.7mm.If the height H of each rib shape teat 26 is excessively low, be difficult to then to guarantee that the edge between the mandrel 20 and resin periphery material after the welding circumferentially reaches the mechanical fastening power of the direction of axis L.
On this jog 24, the gap between the adjacent rib shape teat 26 is preferably below the 2mm, that is, the largest interval D in gap 27 is preferably below the 2mm.The largest interval D in the gap 27 between the adjacent rib shape teat 26 is the circumferential distances in edge between the top 26a of adjacent rib shape teat 26.For example, in the situation of pointed shape at the top 26a of each rib shape teat 26, largest interval D can be approximated to be the crow flight distance between the top 26a of rib shape teat 26, be provided with plane or curved surface and in the situation that both sides are provided with the bight at the top 26a of each rib shape teat 26, largest interval D can be approximated to be the crow flight distance between the adjacent corners between the rib shape teat 26.In addition, be in curve form and the situation that is not provided with the bight at the top 26a of each rib shape teat 26, largest interval D can be approximated to be the crow flight distance between the resin periphery material described later 30 actual positions that contact.
If the gap 27 between the adjacent rib shape teat 26 is wide, then when induction heating described later, 30 heat of supplying with can not be transmitted fully from each rib shape teat 26 to resin periphery material.Therefore, be present in the fully melting of resin of the resin periphery material 30 in the gap 27 between the adjacent rib shape teat 26, easily produce not weld.On the other hand, if the gap 27 between the adjacent rib shape teat 26 is narrow, then because the degree of depth that can not deepen each rib shape teat 26, so overhang reduces, at the enough bond strengths that are difficult to after the welding to guarantee between mandrel and the resin periphery material 30.The maximal clearance D in the gap 27 between the adjacent rib shape teat 26 is preferably more than the 1mm.
The par 25 of mandrel 20 is located at along position adjacent with jog 24 on the direction of axis L, namely is located at the position adjacent with the both end sides of a plurality of rib shape teats 26.This par 25 is made of the face parallel with not having irregular axis L, preferably is made of the round-shaped curved surface in cross section.Par 25 forms apart from the distance of axis L less apart from the distance of axis L than the top 26a of the rib shape teat 26 of jog 24.By with this distance par 25 being set, the height at the top of a plurality of rib shape teats 26 is for exceeding laterally the height below the 1mm than par 25.This highly is preferably more than the 0.5mm, is particularly preferably more than the 0.7mm.Therefore, if the planar inner wall face described later 32 of resin periphery material 30 is relatively heated with par 25, then can utilize the heat of supplying with from a plurality of rib shape teats 26 to make 30 weldings of resin periphery material on par 25.
This par 25 apart from the distance of axis L be with adjacent rib shape teat 26 between bottom 26b identical with the distance between the axis L or less than the bottom 26b between the adjacent rib shape teat 26 and the distance between the axis L, but be particularly preferably identical distance.After the welding,, on par 25, can between the two ends of each rib shape teat 26 and resin periphery material 30, obtain to improve bond strength along the mechanical fastening power of the direction of axis L by 30 weldings of resin periphery material.
The width W along the direction of axis L of above-mentioned par 25 is preferably formed more than 0.5 times of largest interval D into the gap 27 between the adjacent rib shape teat 26.By forming par 25 with such width, when the position adjacent with the end of each rib shape teat 26 is softened in induction heating described later or during melting, two end part side at a plurality of rib shape teats 26, resin periphery material 30 also can be fused to enough width par 25,, can guarantee that the resin welding is with the mechanical fastening power along the direction of axis L between mandrel 20 and the resin periphery material 30.
The width W of this par 25 for example can be below the largest interval D for gap 27.If the width W of par 25 is wide, then have the fully situation of the part of welding that between par 25 and resin periphery material 30, is formed with not.
The hollow part 23 of mandrel 20 and penetration hole 22 form as required, and its shape, size are for arbitrarily.In this embodiment, the groove shape of the side's that hollow part 23 forms at mandrel 20 end face upper shed, and form the degree of depth of the inboard of the bottom 26b that arrives jog 24.Therefore, the thickness attenuation between the bottom 26b of hollow part 23 and jog 24.If the thickness attenuation at this position then can reduce thermal capacity, therefore when heating, can be easy to heat up.
If adopt to forge, can not remove material and penetration hole 22 and hollow part 23 etc. are set, therefore can reduce the waste of material.In addition, then different from annular knurl processing if adopt to forge, can freely set the largest interval D, position, size in shape, height H, the gap 27 of a plurality of rib shape teats 26 etc., by adjusting these, can guarantee the suitable bond strength of resin periphery material 30.And, if form a plurality of rib shape teats 26 by forging, then do not need as annular knurl processing, to form jog 24 from the outside to the side face pressurization, even the thickness between the bottom 26b of hollow part 23 and jog 24 is thinner as present embodiment, for example below the 5mm, also can on side face 21, easily form rib shape teat 26.
In this embodiment, in order can guaranteeing as the desired intensity of worm gear, and to be easy to guarantee heat resistance etc., to use 6, the polyamide such as 6-nylon, 6-nylon, 4,6-nylon.Particularly, for being easy to guarantee the reasons such as intensity, 6-nylon is more suitable, and particularly the M C Na イ mouth Application of mechanical strength, thermal property, chemical property excellence (Japanese Port リ ペ Application Co., Ltd. system, TM trade mark) is more suitable.In addition, in order to ensure sliding, also can use polyether-ether-ketone (PEEK), polyphenylene sulfide (PPS), polyoxymethylene (POM) etc.
The resin periphery material 30 of this mode of execution in the form of a ring.The inner peripheral surface of resin periphery material 30 is close to also welding on the side face 21 of mandrel 20.Namely, shown in Fig. 4 (b), a plurality of rib shape teats 26 that the resin periphery material 30 of welding will be located on the side face 21 of mandrel 20 are fully buried underground, resin periphery material 30 enters into the gap 27 interior and fully fillings between each rib shape teat 26, be bonded in securely on each rib shape teat 26, and also fully welding on par 25.
Like this, in 30 weldings of resin periphery material under the state on the mandrel 20, a plurality of rib shape teats 26 are fully buried underground, therefore, the boundary line that the mandrel 20 of observing from the both ends of the surface side of composite component 10 and resin periphery material are 30 forms round-shaped that end by par 25 consists of as shown in Figure 1.In addition, the peripheral shape of resin periphery material 30 and thickness form the size of the machining allowance of tooth of comprising worm gear etc.
Then, the method for making composite component 10 is described.
When making composite component 10, via following operation: the preparatory process of preparing resin periphery material 30 and mandrel 20; The chimeric operation that makes the embedding hole 31 of resin periphery material 30 be nested in the side face 21 of mandrel 20 and make compostle member 40; , mandrel 20 will be nested in the welding operation of resin periphery material 30 weldings on the side face of mandrel 20 by being carried out induction heating; Realization is as the preprocessing operation of the precision of composite component 10.
At first, in preparatory process, shown in Fig. 5 (a), (b), form respectively mandrel 20 and resin periphery material 30.
Shown in Fig. 5 (b), the resin welding arranges along circumferentially disposing side by side along the jog 24 and the par 25 that is formed on the both end sides of a plurality of rib shape teats 26 of a plurality of rib shape teats 26 of the circumferential direction formation of crosscut by the side face 21 that forges at mandrel 20 with mandrel 20.The width W along axis L of par 25 forms greater than 0.5 times of the largest interval D in the gap 27 between the adjacent rib shape teat 26.
After the forging, also can implement as required machining etc.In machining, both ends of the surface and axis L are formed the squareness of regulation or form each several part with specified accuracy.
Shown in Fig. 5 (a), resin periphery material 30 forms ring-type by thermoplastic resin.In this embodiment, resin periphery material 30 has with the outer circumferential face 33 of the parallel cross section circle of axis L, has and the embedding hole 31 of the corresponding internal face of the side face 21 of mandrel 20 and the both ends of the surface that are made of the plane.The length along the direction of axis L of the jog 24 on the thickness between the both ends of the surface and the side face 21 of being located at mandrel 20 and the par 25 of both sides thereof is corresponding.
Embedding hole 31 has the planar inner wall face 32 of the cross section circle that concaveconvex shape is not set, forms abreast with axis L.As long as at least greater than the length of the central axial direction of the jog of mandrel, then this embedding hole 31 can be that penetration hole also can be non-through hole to this embedding hole 31 along the length of the direction of axis L.In this embodiment, this embedding hole 31 forms penetration hole.
Embedding hole 31 is made as the shape at the top of contact rib shape teat as much as possible, preferably contacts the shape at the top of whole rib shape teats.The internal diameter of the planar inner wall face 32 of embedding hole 31 be suitably for can be chimeric with the jog 24 of mandrel 20 size.Specifically, the internal diameter of planar inner wall face 32 is set to such an extent that be slightly smaller than the maximum diameter that is made of top 26a of jog 24, for example sets littlely by 0.4%～3%.If the internal diameter of planar inner wall face 32 is excessive with respect to the maximum diameter of jog 24, then when induction heating described later, can not utilize the heat of a plurality of rib shape teats 26 to heat fully smooth internal face 32, melting resin is difficult to enter in the gap 27 between the adjacent rib shape teat 26 sometimes.On the other hand, if the internal diameter of planar inner wall face 32 is too small with respect to the maximum diameter of jog 24, then resin periphery material 30 itself can deform.
Then, in chimeric operation, be nested in the side face 21 of mandrel 20 by the embedding hole 31 that shown in Fig. 5 (c), makes resin periphery material 30, and shown in Fig. 4 (a), make the top contact planar inner wall face 32 of a plurality of rib shape teats 26 and make par 25 relative with planar inner wall face 32.By mandrel 20 is embedded in the embedding hole 31 of resin periphery material 30, and between adjacent rib shape teat 26, be formed with the gap.
For chimeric mandrel 20, for example can make resin periphery material 30 add thermal expansion and be nested on the side face 21 of mandrel 20.For example, by in oven etc., resin periphery material 30 being heated, make the diameter expansion of embedding hole 31 be the diameter corresponding with the external diameter of mandrel 20, thereby can easily mandrel 20 be inserted in the embedding hole 31.
Heating-up temperature can be according to settings such as the kind of the contrast of the external diameter of the internal diameter of embedding hole 31 and mandrel 20, thermoplastic resin, softening point, expansivitys.For example, in the situation that polyamide, heating-up temperature preferably is made as about 130 ℃～150 ℃.In addition, if heating-up temperature is too high, then the accuracy to shape of resin periphery material 30 reduces sometimes, if heating-up temperature is excessively low, then the insertion of resin periphery material 30 need to spend the time.
The side face 21 of mandrel 20 and the embedding hole 31 of resin periphery material 30 chimeric such as can be by using the keeping parallelism degree such as anchor clamps on one side, feeling relieved and utilize press machine etc. to pressurize and in the embedding hole 31 with the side face 21 insertion resin periphery materials 30 of mandrel 20 along axial direction.Be made in this wise the compostle member 40 that mandrel 20 and resin periphery material 30 are combined.
In addition, before this chimeric operation, in order to improve the bond strength between mandrel 20 and the resin periphery material 30, one or both that also can be in the embedding hole 31 of the side face 21 of mandrel 20 and resin periphery material 30 arranges the cohesive force improving agent layer of various adhesive materials etc.
Then, in the welding operation, shown in Fig. 5 (d), utilize induction heating that resin periphery material 30 is fused on the jog 24 and par 25 of mandrel 20.This welding operation in this embodiment, is used high-frequency induction heating apparatus with the device that mandrel heats up can being carried out.In this device, be provided with the heating coil 50 for generation of alternating magnetic field, by the power supply of control to heating coil 50, the side face of mandrel 20 can be adjusted to desired temperature.In addition, when heating, can make compostle member 40 and heating coil 50 relative rotation centered by axis L.
In when heating, by making the high frequency current that flows in the heating coil 50, and mandrel 20 is carried out induction heating, the surface temperature of mandrel 20 is maintained in the temperature range more than the melt temperature of the resin that consists of resin periphery material 30.For example, be in 200 ℃～240 ℃ the situation of resin using melt temperature, with the surface temperature of mandrel 20 maintain than melt temperature high 20 ℃～60 ℃ temperature.
Thus, rib shape teat 26 contacted parts and near the part thereof with side face 21 mandrel 20 in the resin periphery material 30 heats up under the effect of the heat of mandrel 20 and softening or melting.So the resin melting between the adjacent rib shape teat 26 enters in the gap 27 between each rib shape teat 26, melting resin is close on the jog 24.In addition, near adjacent with a plurality of rib shape teat 26 in resin periphery material 30 position resin softening or melting be close to mandrel 20 par 25 around.
In addition, in this welding operation, also a plurality of compostle members 40 can be bearing on the axle shape anchor clamps and together to a plurality of induction heating that carry out.As axle shape anchor clamps, such as using in the penetration hole 22 that runs through each mandrel 20 and anchor clamps fixing, that under this state, can relatively move with heating coil 50 etc.
After the welding operation, by for example heat radiation or utilize cooling liquid to cool off in air, be close at melting resin under the state of side face of mandrel 20 and solidify.
In this embodiment, implement afterwards the preprocessing operation.In the preprocessing operation, the end face of resin periphery material 30 and the end face of mandrel 20 are carried out machining, for example form plane shape.At this, shown in Fig. 5 (e), by the cutting end face, and the width W along axis L of par 25 is narrowed down.The amount of cutting end face can suitably be adjusted, and for example is below the largest interval D in the gap 27 between the adjacent rib shape teat 26.Thus, the par 25 of removing mandrel 20 and resin periphery material 30 be the complete part of welding not, can make par 25 and resin periphery material 30 on complete cycle until the complete state of welding in two end part.Also can make the width W of par 25 by processing is 0.5 times～1 times of largest interval D in gap 27.If the width W of par 25 is narrow, the situation that then exists the fastening power along the direction of axis L of mandrel 20 and resin periphery material 30 to reduce.
In this preprocessing operation, preferably will be machined in the scope of regulation such as the outer circumferential face of the precision of penetration hole 22, resin periphery material 30 precision with respect to the each several parts such as squareness of the parallelism of axis L, both ends of the surface.
Thus, finish the manufacturing of composite component 10 as shown in Figure 1.
For the composite component 10 of acquisition like this, if through hole 22 form keyway and on the periphery of resin periphery material 30 the tooth section of machining expectation etc. accurately, then can make the worm gear as final products.
If make as described above composite component 10, then can make and each rib shape teat 26 contacted resin periphery materials 30 melting that has been heated, melting resin can enter all sites of the inside in the gap 27 between each rib shape teat 26 reliably.Therefore, can prevent not weld, can make resin periphery material 30 reliably welding on the side face 21 of mandrel 20.
And, if make the embedding hole 31 of resin periphery material 30 be nested in the side face 21 of this mandrel 20 and carry out induction heating, then can utilize each the rib shape teat 26 that has been heated to make resin periphery material 30 meltings of the position of the resin periphery material 30 of the position adjacent with jog 24 and the both end sides adjacent with jog 24.Thereby, melting resin enters into the inside in the gap 27 between the rib shape teat 26, each rib shape teat 26 and 30 weldings of resin periphery material, and in the adjacent position of the both end sides of each rib shape teat 26, melting resin arrives par 25, par 25 and 30 weldings of resin periphery material.Thus, jog 24 integral body are embedded in the inside of resin periphery material 30 and by bonding securely.
After 30 weldings of resin periphery material, can not see jog 24 from the both ends of the surface of mandrel 20, can obtain excellent outward appearance.In addition, by with 26 weldings of a plurality of rib shape teat on resin periphery material 30, can improve the bond strength that welding produces, in the side of a plurality of rib shape teats 26 and enter between the resin of 26 of each rib shape teats and can obtain circumferential mechanical fastening power.And, between the two end part of a plurality of rib shape teats 26 and the resin on the par 25, can obtain along the mechanical fastening power of the direction of axis L.Therefore, can make resin periphery material 30 with enough intensity weldings on mandrel 20.
And on this mandrel 20, the width W of par 25 forms more than 0.5 times of largest interval D in the gap 27 between the adjacent rib shape teat 26.During welding, be configured in resin periphery material 30 between the adjacent rib shape teat 26 can be heated to fully melting under the effect of the heat of each rib shape teat 26 degree, then with near also can being melted at the rib shape teat 26 contacted positions of resin periphery material 30.Thereby, can make engaging with the par 25 of mandrel 20 reliably with rib shape teat 26 resins adjacent and that be melted fully of resin periphery material 30, thus, can guarantee the enough bond strengths between mandrel 20 and the resin periphery material 30.
Particularly, form the width W along axis L of par 25 greater than 0.5 times of the largest interval D in the gap 27 between the adjacent rib shape teat 26, be fused on the side face 21 of mandrel 20 at resin periphery material 30 after, the cutting end face is so that the narrowed width of the par 25 of mandrel 20.
Thereby, when welding, the both end sides that can make resin periphery material 30 in the par 25 of wider width fully melting and reliably welding on par 25.In addition since after welding the end face of cutting mandrel 20, therefore can obtain resin periphery material 30 with mandrel 20 until end composite component 10 of fully welding all.
Thereby, in such manufacture process, do not need to form significantly the concaveconvex shape of the jog 24 of mandrel 20, need to concaveconvex shape be set at the internal surface of resin periphery material 30 yet.Therefore, can easily improve bond strength between mandrel 20 and the resin periphery material 30.
Below, embodiment and comparative example are described.
Embodiment
Make resin welding shown in Figure 2 with mandrel 20, corresponding annular resin periphery material 30 is nested on the side face of mandrel 20, carry out welding by utilizing high-frequency induction heating, make embodiment's composite component.
The resin welding is made of carbon steel with mandrel 20, and maximum diameter is 60mm, and thickness is 16mm, is provided with the par 25 of 2mm in the both end sides of side face 21, between this par along circumferentially disposing side by side a plurality of rib shape teats 26 that form along the circumferential direction of crosscut.The circumferential sectional shape of each rib shape teat 26 is the general triangular shape, and the angle of top 26a is with respect to the normal bilateral symmetry of drawing from axis L, is 90 degree roughly.The height of each rib shape teat 26 is 0.9mm, and the largest interval D in the gap between the adjacent rib shape teat 26 is 1.9mm.On the other hand, resin periphery material 30 is formed bodies of M C Na イ ロ Application (Japanese Port リ ペ Application コ Co., Ltd. system, TM trade mark) system, and external diameter is 85mm, and the internal diameter of embedding hole 31 is 60mm, and thickness is 19mm.
Induction heating carries out to the power supply of coil by control, so that the surface temperature of mandrel 20 is the roughly melt temperature of the resin of formation resin periphery material 30.
The composite component 10 that obtains is cut off along central axial direction, observe the cross section of the bottom 26b between the adjacent rib shape teat 26, can confirm that resin can both welding at two end part, on the total length of par 25.In addition, in an embodiment, the resin of resin periphery material 30 is present in all positions of this bottom 26b fully, and can confirm can be with fully welding of bottom 26b.
Then, make in the same manner as described above 6 composite components 10, to mandrel 20 and resin periphery material 30 along axis L imposed load and measure yield strength round about.Its result, maximum value are 85.9kN, and minimum value is 62.3kN, and mean value is 75.2kN.
Comparative example 1
Be greater than 1mm with the height design of each rib shape teat of mandrel, the largest interval D in the gap 27 between the adjacent rib shape teat 26 is designed to greater than 2mm.In addition, all make in the same manner composite component with embodiment.
The composite component 10 that obtains is cut off along central axial direction, observe the cross section of the position of the bottom 26b between the adjacent rib shape teat 26, in comparative example 1, between adjacent rib shape teat 26, particularly in bottom 26b side, have trickle not welding position, many places.
In addition, make 6 composite components 10, to mandrel 20 and resin periphery material 30 along axis L imposed load and measure yield strength round about.Its result, maximum value are 40.3kN, and minimum value is 30.0kN, and mean value is 34.2kN.Can confirm with embodiment and compare, the yield strength variation.
Description of reference numerals
10, composite component; 20, resin welding mandrel; 21, the side face of mandrel; 22, penetration hole; 23, hollow part; 24, jog; 25, par; 26, rib shape teat; 26a, top; 26b, bottom; 27, gap; 30, resin periphery material; 31, embedding hole; 32, planar inner wall face; 33, outer circumferential face; 40, compostle member; 50, heating coil; L, central axis; H, highly; W, width.
Claims (11)
1. mandrel by making this mandrel be embedded in the embedding hole of resin periphery material and carry out induction heating, and makes the welding of above-mentioned resin periphery material on the side face of this mandrel,
This mandrel has rib shape teat and is equipped on respectively the par of the both end sides of above-mentioned rib shape teat at above-mentioned side face, and this rib shape teat is a plurality of, form and along this circumferentially side by side configuration along the circumferential direction of crosscut,
When above-mentioned mandrel is embedded in the embedding hole of above-mentioned resin periphery material, between adjacent above-mentioned rib shape teat, be formed with the gap,
Distance from the central axis of above-mentioned mandrel to above-mentioned par on complete cycle less than the distance at the top from above-mentioned central axis to above-mentioned rib shape teat.
2. mandrel according to claim 1, wherein,
The height of above-mentioned a plurality of rib shape teats is below the 1mm, and the gap between the adjacent above-mentioned rib shape teat is below the 2mm.
3. mandrel according to claim 1, wherein,
Above-mentioned a plurality of rib shape teat is set to than the above-mentioned par height below the outstanding 1mm laterally.
4. mandrel according to claim 1, wherein,
The width along above-mentioned central axis of the par of above-mentioned mandrel is made as 0.5 times～1 times of largest interval in the gap between the adjacent above-mentioned rib shape teat.
5. composite component, this composite component has each described mandrel and the resin periphery material of welding on the side face of this mandrel in the claim 1～4.
6. the manufacture method of a composite component, this manufacture method be by making mandrel be embedded in the embedding hole of resin periphery material and carry out induction heating, and above-mentioned resin periphery material is fused on the side face of above-mentioned mandrel,
Preparation is provided with the above-mentioned mandrel of a plurality of rib shape teats and the par of the both end sides that is configured in this rib shape teat at above-mentioned side face, these a plurality of rib shape teats form and circumferentially configure side by side along this along the circumferential direction of crosscut,
Preparation is provided with the above-mentioned resin periphery material of smooth internal face in above-mentioned embedding hole,
Be nested on the side face of above-mentioned mandrel by the embedding hole that makes above-mentioned resin periphery material, and the top of above-mentioned a plurality of rib shape teats contacted with above-mentioned smooth internal face, and make above-mentioned par relative with above-mentioned smooth internal face,
Carry out afterwards induction heating, make above-mentioned resin periphery material be fused to a plurality of rib shape teats and the above-mentioned par of above-mentioned mandrel.
7. the manufacture method of composite component according to claim 6, wherein,
Be nested on the side face of above-mentioned mandrel by the embedding hole that makes above-mentioned resin periphery material, and make above-mentioned par relative separately with the internal face of above-mentioned resin periphery material.
8. the manufacture method of composite component according to claim 6, wherein,
The height of above-mentioned a plurality of rib shape teats is below the 1mm, and the gap between the adjacent above-mentioned rib shape teat is below the 2mm.
9. the manufacture method of composite component according to claim 6, wherein,
Above-mentioned a plurality of rib shape teat is set to than the above-mentioned par height below the outstanding 1mm laterally.
10. the manufacture method of composite component according to claim 6, wherein,
The width along above-mentioned central axis of the par of above-mentioned mandrel is made as 0.5 times～1 times of largest interval in the gap between the adjacent above-mentioned rib shape teat.
11. the manufacture method of composite component according to claim 6, wherein,
After above-mentioned resin periphery material was fused on the above-mentioned mandrel, by the cutting end face, the par of removing above-mentioned mandrel and above-mentioned resin periphery material be the part of complete welding not.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210100292.7A CN103363059B (en) | 2012-04-05 | 2012-04-05 | Resin welding mandrel, composite component and manufacture method thereof |
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| CN201210100292.7A CN103363059B (en) | 2012-04-05 | 2012-04-05 | Resin welding mandrel, composite component and manufacture method thereof |
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| CN103363059B CN103363059B (en) | 2016-08-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108469662A (en) * | 2017-02-23 | 2018-08-31 | 玉晶光电(厦门)有限公司 | Optical lens, its assemble method and lens barrel |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001141033A (en) * | 1999-11-12 | 2001-05-25 | Nsk Ltd | Worm wheel and its manufacturing method |
| JP2006194296A (en) * | 2005-01-12 | 2006-07-27 | Jtekt Corp | Composite gear and its manufacturing method and electric-powered power steering including composite gear |
| JP2007309512A (en) * | 2006-04-17 | 2007-11-29 | Nsk Ltd | Worm wheel, worm type speed-reducing mechanism, electric power steering device, and manufacturing method for worm wheel |
| WO2012029525A1 (en) * | 2010-09-03 | 2012-03-08 | 日本ガスケット株式会社 | Resin gear, and method and apparatus for producing same |
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2012
- 2012-04-05 CN CN201210100292.7A patent/CN103363059B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001141033A (en) * | 1999-11-12 | 2001-05-25 | Nsk Ltd | Worm wheel and its manufacturing method |
| JP2006194296A (en) * | 2005-01-12 | 2006-07-27 | Jtekt Corp | Composite gear and its manufacturing method and electric-powered power steering including composite gear |
| JP2007309512A (en) * | 2006-04-17 | 2007-11-29 | Nsk Ltd | Worm wheel, worm type speed-reducing mechanism, electric power steering device, and manufacturing method for worm wheel |
| WO2012029525A1 (en) * | 2010-09-03 | 2012-03-08 | 日本ガスケット株式会社 | Resin gear, and method and apparatus for producing same |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108469662A (en) * | 2017-02-23 | 2018-08-31 | 玉晶光电(厦门)有限公司 | Optical lens, its assemble method and lens barrel |
| CN108469662B (en) * | 2017-02-23 | 2020-10-27 | 玉晶光电(厦门)有限公司 | Optical lens, assembling method thereof and lens barrel |
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| CN103363059B (en) | 2016-08-24 |
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