CN209557478U - A kind of compound mandrel of projection type for elastic flexural pivot - Google Patents
A kind of compound mandrel of projection type for elastic flexural pivot Download PDFInfo
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- CN209557478U CN209557478U CN201821827719.2U CN201821827719U CN209557478U CN 209557478 U CN209557478 U CN 209557478U CN 201821827719 U CN201821827719 U CN 201821827719U CN 209557478 U CN209557478 U CN 209557478U
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Abstract
A kind of compound mandrel of projection type for elastic flexural pivot is projection core barrel, and entire mandrel is rod-like structure, and position is equipped with adjustment projection among mandrel；Mandrel is allocated as two parts, a part is the basic mandrel of mandrel stress bar part, and another part is the mandrel projection for adjusting flexural pivot rigidity property, and mandrel projection is wrapped among basic mandrel on the outer surface at position, forms the adjustment projection of mandrel；Mandrel is the compound mandrel of projection type combined to form by mandrel projection and basic mandrel two parts.It is this that the elastic compound mandrel of flexural pivot projection type produced is combined by two parts, not only it is able to achieve the characteristic of original projection core barrel, and it is fabricated separately since mandrel projection is used with basic mandrel, many characteristics of projection core barrel can effectively be changed, so that projection core barrel in flexural pivot system can buffered hf impact, play the role of flexible connection；The weight that flexural pivot can also be reduced simultaneously, is greatly reduced mandrel cost of manufacture.
Description
Technical field
The utility model relates to the mandrels to a kind of elastic flexural pivot, refer in particular to a kind of core of elastic flexural pivot with projection
Axis is mainly used for improving the comprehensive performance of the elastic ball hinge pin aixs cylinder block portion point with projection, prevents mandrel projection part from occurring
Stress is excessively concentrated, and is reduced the processing and fabricating cost of projection shape mandrel, is lowered the own wt of mandrel；Belong to elastic damping structural portion
Part manufacture technology field.
Background technique:
The flexible connector that elastic flexural pivot is generally combined by rubber or polyurethane and metalwork, it has flexible connected
Effect with buffering vibratory impulse plays the role of vibration and noise reducing so being widely used in flexible connected position, is widely used
In flexible connected position, play vibration and noise reducing, as present track vehicular traffic and automobile much connect in all adopt
It is hinged with elastic ball.
Currently, in elastic flexural pivot practical application, in order to provide lower deflection stiffness to elastic flexural pivot and improve deflection
Fatigue behaviour can be made into centre with the knobs similar to " hump " shape in the middle part of the mandrel of elastic flexural pivot, and this
Contribution amount very little of the Part-spherical projection material to flexural pivot intensity, that is to say, that as long as guaranteeing that the outer profile of this part-structure is special
Sign, so that it may meet the requirements；The flexural pivot mandrel of this spherical protrusions with " hump " shape is all using metal material one now
Bodyization production, metal bar is machined again after forging and is made, and it is at high cost to make side in this way, needs to first pass through
Blank is forged, then is come out made by machining, manufacturing process is pretty troublesome, and machining allowance is big, causes in mandrel cost of manufacture
It rises；On the other hand, the projection part of mandrel all uses metal to be integrally formed with basic arbor portions, though it is simple to seem structure,
But certain adverse effect can be brought to the performance of entire flexural pivot, the rigidity of mainly projection part is too big, be easy to damage and its
The rubber layer sulfided generates the phenomenon that stress is excessively concentrated.
In addition, light-weight design has become the demand and developing direction of industrial products manufacture, the light weight of auto parts and components
Change design requirement is stronger, and elastic flexural pivot is also required to light-weight technologg as the biggish connector of dosage in chassis system.
And by analysis, since existing flexural pivot mandrel all uses metal to make, so that entire mandrel weight seems very heavy, especially
The projection part of flexural pivot can carry out light-weight technologg to the contribution amount very little of flexural pivot intensity completely, therefore it is necessary to carry out
It improves.In order to solve the problems, such as that flexural pivot mandrel is light-weighted, some proposes the method for using hollow core shaft, but to do will make in this way
The intensity of mandrel is by large effect, and the manufacture difficulty of hollow core shaft is bigger, can undoubtedly further increase production cost,
So being difficult to promote on the other hand, it is therefore necessary to this it is further proposed that improving.
The patent literature report for not finding there is with the utility model same technique by patent retrieval, has with the utility model
The patent of certain relationship mainly has following:
1, Patent No. CN201410239414.X, a kind of entitled " vehicle core shaft ", applicant are as follows: the high-incidence automobile in Ningbo
The patent of invention of control system limited liability company, which disclose a kind of vehicle core shafts.The vehicle core shaft, including by multiple
Hose made of condensation material and at least one steel core are equipped with concentric setting and spiral flat filament in hose, described
Flat filament hard-pressed bale be rolled on steel core outer wall and flat filament outer wall is tightly attached on hose inner wall；The composite material is by following parts by weight
At being grouped as: long-chain nylon: 80 parts, polyamide elastomer: 5-20 parts, PP:5-10 parts of modified by maleic acid anhydride graft, montmorillonite:
5-10 parts, plasticizer: 5-20 parts, antioxidant: 0.5-2 parts, inorganic filler: 5-10 parts, lubricant: 0.5-2 parts.
2, Patent No. CN201210100292.7, entitled " resin welding mandrel, composite component and its manufacturer
Method ", applicant are as follows: the patent of invention of Neturen Co., Ltd., which disclose a kind of resin welding mandrels, compound
Component and its manufacturing method provide a kind of resin welding core that can be easy to improve the bond strength of resin periphery material and mandrel
Axis and the composite component and its manufacturing method for using the mandrel.Mandrel (20) is set to be embedded in the embedded hole of resin periphery material (30)
(31) and induction heating is carried out, when resin periphery material to be fused on the circumferential surface (21) of the mandrel, by resin periphery material
Embedded hole in planar inner wall face (32) are set, be arranged on the circumferential surface of mandrel and formed along crosscutting circumferential direction and circumferentially simultaneously
The multiple rib shape protrusions (26) for arranging configuration and configuration are in the flat part (25) of two end sides of multiple rib shape protrusions, by making outside resin
The embedded hole of all materials is nested in the circumferential surface of mandrel, so that the top of multiple rib shape protrusions is in contact with planar inner wall face, and make flat
Portion is opposite with planar inner wall face, makes the material welding of resin periphery in bump (24) and flat part using induction heating later.
3, Patent No. CN201520805387.8, a kind of entitled " bridge plug high temperature resistance and high strength composite core
Axis ", applicant are as follows: the utility model patent of Beijing glass steel institute compound Materials Co., Ltd, which disclose a kind of bridge plug use
High temperature resistance and high strength composite material mandrel, it is characterised in that: the mandrel both ends are respectively big end and small end, are set on the side of big end
It is equipped with boss, there are two rows of pin holes on boss, and two rows of pin holes mutually stagger angle along boss radial direction interlaced arrangement
It is 15 °~30 °, the composite material pin of corresponding size is inlayed in pin hole, is provided on one end of big end along big end excircle
Uniformly distributed drawing aperture, the material of the mandrel are polymer matrix composites, and resin matrix is high temperature resistant, high-toughness epoxy resin, are increased
Strong material is high-modulus, high intensity E glass fibre or S glass fibre, and wherein heatproof reaches >=150 DEG C；High tenacity shows as breaking
It splits elongation and wants >=4%, which has the characteristics that light-weight, easy brill milling, high temperature resistant, intensity are high, which is actually using
The pulling force effect of powerful (>=100KN) can both have been met in the process while can also meet the external pressure effect of powerful (>=70MPa).
By carefully analyzing to these above-mentioned patents, although these patents are directed to the structure of the mandrel of composite material,
It also proposed some improved technology schemes, but by carefully analyzing, those patents are not the mandrels of elastic flexural pivot, and this is
The structure or method of composite material mandrel is impossible to be applied on elastic flexural pivot, elastic ball hinge pin axis mentioned-above in this way
Problem still remains, and still needs further to be subject to Improvement.
Utility model content
The purpose of this utility model is that being directed to the deficiency of existing elastic ball hinge pin axis, a kind of further improvement mandrel is proposed
Projection partial properties mitigate mandrel weight, reduce the novel elastic flexural pivot mandrel of mandrel cost of manufacture, this kind of elastic ball hinge pin axis
The weight of mandrel can effectively be mitigated, improve the performance of mandrel projection part, reduce the production cost of mandrel.
In order to reach this purpose, the utility model provides a kind of compound mandrel of projection type for elastic flexural pivot, is
Projection core barrel, entire mandrel are rod-like structure, and position is equipped with adjustment projection among mandrel；It is characterized by: by mandrel point
Make two parts, a part is the basic mandrel of mandrel stress bar part, and another part is that the mandrel of adjustment flexural pivot rigidity property is prominent
Block, and mandrel projection is wrapped among basic mandrel on the outer surface at position, forms the adjustment projection of mandrel；Mandrel is by mandrel
Projection and basic mandrel two parts combine to form the compound mandrel of projection type.
Further, the mandrel projection and basic mandrel are made by two kinds of different materials respectively, by two kinds of different materials
The mandrel projection of material production is combined with each other to form the elastic compound mandrel of flexural pivot projection type with basic mandrel
Further, the basic mandrel is made of metal material, and mandrel projection is not using than basic mandrel material
It is made with the material of hardness or density, to guarantee that basic mandrel, mandrel projection form the difference of hardness or density between the two.
Further, the mandrel projection uses high molecular material, polymer composite or lightweight metal material system
Make, by the way that high molecular material, polymer composite or lightweight metal material to be compounded on the outer surface of basic mandrel, is formed
Elastic flexural pivot composite core axis.
Further, the high molecular material is plastic material or fabric material, by plastic material or fiber system
Product material is combined with each other with basic mandrel, forms elastic flexural pivot composite core axis.
Further, the plastic material is fibre reinforced resin material.
Further, the lightweight metal material is the metal material that density is lower than basic mandrel, including aluminium, copper, magnesium
And its alloy.
Further, the mandrel projection and basic mandrel take round, ellipse, polygonized structure or circular arc and straight
The other shapes that knot is closed combine, and the radial section of basic mandrel and mandrel projection is circle, ellipse, polygonized structure or circle
Arbitrary Shape Cross Section of the arc in conjunction with straight line, mandrel projection are wrapped in circle, ellipse, polygonized structure or the circle of basic mandrel
Arc is on the Arbitrary Shape Cross Section outer surface in conjunction with straight line.
Further, the axial cross section in the middle part of the basic mandrel is linear structure, concave or convex structure.
Further, be provided in the middle part of the basic mandrel structure feature that can be improved plastics package power annular knurl,
Groove or boss.
Utility model has the advantages that
Flexural pivot mandrel is divided into two parts in projection part and basic mandrel by the utility model, and different materials is respectively adopted
Material production, combination form a kind of compound mandrel, there is the following advantage:
1, using the compound mandrel of composite structure, entire mandrel is allocated as two parts production, is guaranteeing structural strength performance
It is required that while, the processing technology of present elastic ball hinge pin axis can be greatly simplified；It directlys adopt profile and makes basic mandrel, then
In composite core aixs cylinder block above, the forging manufacturing procedure of conventional projection core barrel now is eliminated；
2, it after mandrel separates projection, is in addition fabricated separately, mandrel projection part can be made to be more easier to carry out
Change, so that the structural adjustment of projection is more effectively carried out, to meet the needs of various elastic flexural pivots
3, it takes different materials to make basic mandrel and mandrel projection, can effectively carry out the adjusting performance of projection, realize
The integral, flexible structure of flexural pivot more optimizes, from basic mandrel to three layers of three kinds of material of mandrel projection and elastic component, by it is hard, in
Firmly, soft gradually transition, is more advantageous to reduction stress concentration phenomenon.
4, it is in addition made of mandrel projection, light-weight technologg can be carried out, realized the lightweight of mandrel/flexural pivot, subtract
Weight amplitude can achieve 30%-40%；
5, mandrel projection part is made using high molecular material, the processing technology of present flexural pivot mandrel can be greatly simplified,
Mandrel projection directly is made by moulding process such as injection molding, molding, extrusion or die casting, cost is fabricated to compared to unitary piece of metal
This is lower, and synthesis reduces cost of goods manufactured.
Detailed description of the invention
Fig. 1 is existing elastic spherical hinge structure schematic diagram；
Fig. 2 is the elastic spherical hinge structure schematic diagram of the utility model one embodiment；
Fig. 3 is the elastic flexural pivot composite core axle construction schematic diagram of the utility model one embodiment；
Fig. 4 is the basic core shaft structure schematic diagram of the elastic flexural pivot composite core axis of one embodiment；
Fig. 5 is the basic core shaft structure schematic diagram of the elastic flexural pivot composite core axis of another embodiment；
Fig. 6 is the basic core shaft structure schematic diagram of the elastic flexural pivot composite core axis of another embodiment.
Specific embodiment
It is further described the utility model in the following with reference to the drawings and specific embodiments.
Fig. 1 is a kind of conventional elastic spherical hinge structure schematic diagram, as can be seen from the figure general elastic flexural pivot be all by
Metal core axle 01, rubber 02 and 03 three parts of housing combine to be formed, wherein at the intermediate position of metal core axle 01 in order to improve elasticity
The performance of flexural pivot is equipped with an intermediate convex block 04, forms a kind of metal core axle to intermediate convex block.
Embodiment one
It can be seen that by attached drawing 2-3 the utility model relates to a kind of compound mandrel of projection type for elastic flexural pivot,
It is to be combined and formed by metal core axle 1, rubber 2 and 3 three parts of housing, and metal core axle 1 is also the compound mandrel of projection type, in metal
There is adjustment projection at the intermediate position of mandrel 1；Entire mandrel is rod-like structure, including a columned basic mandrel 5, in mandrel rod
5 intermediate position is adjustment flexural pivot newly usable mandrel projection 4；The mandrel is allocated as two parts production, and a part is mandrel
The basic mandrel 5(of stress bar part is as shown in Fig. 2), another part is the mandrel projection 4 for changing the variable rigidity property of flexural pivot
(as shown in Fig. 3), and mandrel 1 be combined by mandrel projection 4 and basic 5 two parts of mandrel shape at projection type composite core
Axis, mandrel projection 4 are wrapped on the outer surface at the intermediate position of basic mandrel 5, form the adjustment projection of mandrel.
The basic mandrel 5 is made of quality carbon steel metal material, such as uses 45#High-quality steel profile production, passes through
Machining is fabricated to required garden rod shape, and both ends mill out flat 6, and are drilled with mounting hole 7；
It is compounded with mandrel projection 4 at the intermediate position of basic mandrel 5, mandrel projection 4 uses high molecular material or macromolecule
Composite material production, with guarantee basic mandrel and mandrel projection formed therebetween with one it is hard, in hard rigidity gradient；It is logical
It crosses on the outer surface that high molecular material or polymer composite are compounded in basic mandrel, forms elastic flexural pivot composite core axis.
The high molecular material is plastic material production, recommends PA66+LGF60, PA66+LGF50, and can be in plastics material
Reinforcing fiber resin material is added in material, is taken injection molding that plastic material and basic mandrel are combined with each other, is formed
Elastic flexural pivot composite core axis.
The mandrel projection 4 and basic mandrel 5 take the form of sleeve or ring to match together, basic mandrel and mandrel
The matching faying face of projection takes round, ellipse or polygonized structure to combine, and the radial section of basic mandrel is multilateral shape,
Mandrel projection is wrapped on basic mandrel polygonal exterior surface.
The basic mandrel 5 middle part can be cylindrical structure or prism structure or dumbbell-shaped structure or be relatively large in diameter
The axial cross section of spherical structure, basic 5 middle part of mandrel is linear, concave or convex shape, but smallest cross-sectional size is not less than
The thickness of mandrel end flat structure.
The annular knurl that can be improved the structure feature of plastics package power, groove or convex are provided in the middle part of the basic mandrel
Platform.
Embodiment two
The principle of embodiment two and embodiment are first is that the same, and only slightly different in structure, one kind is for elastic
The compound mandrel of projection type of flexural pivot, entire mandrel are rod-like structure, and position is equipped with variation rigidity adjustment projection among mandrel；It will
Mandrel is allocated as two parts, and a part is the basic mandrel of mandrel stress bar part, and another part is the variation rigidity for changing flexural pivot
Can mandrel projection, and the mandrel projection of mandrel and basic mandrel be combined by two parts shape at projection type composite core
Axis, mandrel projection are wrapped among basic mandrel on the outer surface at position, form the adjustment projection of mandrel.
The mandrel projection and basic mandrel are also made by two kinds of different materials respectively, are made by two kinds of different materials
Mandrel projection is combined with each other to form the elastic compound mandrel of flexural pivot projection type with basic mandrel
Only the basic mandrel is made of metal material, and mandrel projection is using lower than basic mandrel material hardness
Other light metal materials, if copper, aluminium, magnesium and its alloy material make, with guarantee basic mandrel, mandrel projection formed therebetween with
One it is hard, in hard rigidity gradient or density difference.
The mandrel projection is combined with each other by way of die casting or molding with basis mandrel, and it is multiple to form elastic flexural pivot
Close mandrel.
Contour structures in the middle part of the basic mandrel are provided with the annular knurl that can be improved the structure feature of package power, groove
Or the cylindrical structure of boss, mandrel projection but smallest cross-sectional size are not less than the thickness of mandrel end flat structure.
The mandrel projection is envelope revolving structure, is similar to sleeve or ring, outer profile and virgin metal mandrel spherical structure
Outer profile is identical, or according to performance requirement, and contour structure does a small amount of change, and change scheme includes change arc radius, change circle
Cylindrical length.
Embodiment three
The principle of embodiment three and embodiment are first is that the same, and only slightly different in structure, one kind is for elastic
The compound mandrel of projection type of flexural pivot, entire mandrel are rod-like structure, and position is equipped with variation rigidity adjustment projection among mandrel；It will
Mandrel is allocated as two parts, and a part is the basic mandrel of mandrel stress bar part, and another part is the variation rigidity for changing flexural pivot
Can mandrel projection, and the mandrel projection of mandrel and basic mandrel be combined by two parts shape at projection type composite core
Axis, mandrel projection are wrapped among basic mandrel on the outer surface at position, form the adjustment projection of mandrel.
The mandrel projection is made by different materials respectively respectively with basic mandrel, produces mandrel projection and base respectively
After plinth mandrel, then it is combined with each other and forms the elastic compound mandrel of flexural pivot projection type.
The basic mandrel and mandrel projection is made of metal material, and mandrel projection is using harder than basic mandrel material
Low polyurethane material production is spent, to guarantee that basic mandrel, mandrel projection form therebetween the difference of hardness or density.
The mandrel projection is using injection molding or squeezes out or is compounded on the outer surface of basic mandrel by the way of being molded, and is formed
Elastic flexural pivot composite core axis.
The polyurethane material is the polyurethane material of reinforcing fiber or carbon fibre material.
The mandrel projection and basic mandrel are the cooperation of flat structure inside and outside circle structure；It is prominent in basic mandrel 24 and mandrel
It is symmetrically opened on block binding site 28 there are two flat 29, symmetrically opens that there are two flat slot, mandrels on the inner hole that mandrel projection matches
Two flat slots of projection cover in two flats of basic mandrel, are formed and are fitted close.
Example IV
The principle of example IV and embodiment are first is that the same, and only slightly different in structure, one kind is for elastic
The compound mandrel of projection type of flexural pivot, entire mandrel are rod-like structure, and position is equipped with variation rigidity adjustment projection among mandrel；It will
Mandrel is allocated as two parts, and a part is the basic mandrel of mandrel stress bar part, and another part is the variation rigidity for changing flexural pivot
Can mandrel projection, and the mandrel projection of mandrel and basic mandrel be combined by two parts shape at projection type composite core
Axis, mandrel projection are wrapped among basic mandrel on the outer surface at position, form the adjustment projection of mandrel.
The mandrel projection is made by different materials respectively respectively with basic mandrel, produces mandrel projection and base respectively
After plinth mandrel, then it is combined with each other and forms the elastic compound mandrel of flexural pivot projection type.Wherein, basic mandrel uses carbon steel material system
Make, mandrel projection is made of nylon material, and the mandrel projection of nylon material production is compound by injection molding or compression molding
On basic mandrel.
Only the mandrel projection inner hole is circular arc and binds directly and be formed by envelope polymorphic structure, and mandrel projection is logical
It crosses likeness in form sleeve or ring mode covers on basic mandrel, formed and be fitted close；Mandrel projection outer profile and virgin metal mandrel are spherical
Structure outer profile is identical, or according to performance requirement, and contour structure does a small amount of change, and change scheme includes change arc radius, more
Change cylinder segment length.
Embodiment five
The principle of embodiment five and embodiment are first is that the same, and only slightly different in structure, one kind is for elastic
The compound mandrel of projection type of flexural pivot, entire mandrel are rod-like structure, and position is equipped with variation rigidity adjustment projection among mandrel；It will
Mandrel is allocated as two parts, and a part is the basic mandrel of mandrel stress bar part, and another part is the variation rigidity for changing flexural pivot
Can mandrel projection, and the mandrel projection of mandrel and basic mandrel be combined by two parts shape at projection type composite core
Axis, mandrel projection are wrapped among basic mandrel on the outer surface at position, form the adjustment projection of mandrel.
The mandrel projection is made by same material respectively respectively with basic mandrel, produces mandrel projection and base respectively
After plinth mandrel, then it is combined with each other and forms the elastic compound mandrel of flexural pivot projection type.
The mandrel projection is envelope revolving structure, and polygon tooth or spline form is taken to be sleeved on basic mandrel,
Basic mandrel 34 is equipped with tooth corresponding with mandrel projection or spline 38, immovable fitting, likeness in form with the faying face of mandrel projection
Sleeve or ring cooperation, only projection shape is adjusted according to flexural pivot needs.
Above-mentioned listed embodiment, only carries out clear, complete description to the technical solution of the utility model in conjunction with attached drawing；
Obviously, described embodiment is only a part of the embodiment of the utility model, instead of all the embodiments.Based on this reality
It is obtained by those of ordinary skill in the art without making creative efforts all other with the embodiment in novel
Embodiment is fallen within the protection scope of the utility model.
Utility model has the advantages that
Flexural pivot mandrel is divided into two parts in projection part and basic mandrel by the utility model, and different materials is respectively adopted
Material production, combination form a kind of compound mandrel, there is the following advantage:
Flexural pivot mandrel is divided into two parts in projection part and basic mandrel by the utility model, and different materials is respectively adopted
Material production, combination form a kind of compound mandrel, there is the following advantage:
1, using the compound mandrel of composite structure, entire mandrel is allocated as two parts production, is guaranteeing structural strength performance
It is required that while, the processing technology of present elastic ball hinge pin axis can be greatly simplified；It directlys adopt profile and makes basic mandrel, then
In composite core aixs cylinder block above, the forging manufacturing procedure of conventional projection core barrel now is eliminated；
2, it after mandrel separates projection, is in addition fabricated separately, mandrel projection part can be made to be more easier to carry out
Change, so that the structural adjustment of projection is more effectively carried out, to meet the needs of various elastic flexural pivots
3, it takes different materials to make basic mandrel and mandrel projection, can effectively carry out the adjusting performance of projection, realize
The integral, flexible structure of flexural pivot more optimizes, from basic mandrel to three layers of three kinds of material of mandrel projection and elastic component, by it is hard, in
Firmly, soft gradually transition, is more advantageous to reduction stress concentration phenomenon.
4, it is in addition made of mandrel projection, light-weight technologg can be carried out, realized the lightweight of mandrel/flexural pivot, subtract
Weight amplitude can achieve 30%-40%；
5, mandrel projection part is made using high molecular material, the processing technology of present flexural pivot mandrel can be greatly simplified,
Mandrel projection directly is made by moulding process such as injection molding, molding, extrusion or die casting, cost is fabricated to compared to unitary piece of metal
This is lower, and synthesis reduces cost of goods manufactured.
Claims (10)
1. a kind of compound mandrel of projection type for elastic flexural pivot is projection core barrel, entire mandrel is rod-like structure, in mandrel
Intermediate position is equipped with adjustment projection；It is characterized by: mandrel is allocated as two parts, a part is the basis of mandrel stress bar part
Mandrel, another part is the mandrel projection for adjusting flexural pivot rigidity property, and mandrel projection is wrapped in position among basic mandrel
On outer surface, the adjustment projection of mandrel is formed；Mandrel is dashed forward by what mandrel projection and basic mandrel two parts combined to form
The compound mandrel of block type.
2. the projection type compound mandrel as described in claim 1 for elastic flexural pivot, it is characterised in that: the mandrel projection
Made respectively by two kinds of different materials with basic mandrel, by the production of two kinds of different materials mandrel projection and basis mandrel it is compound
The elastic flexural pivot compound mandrel of projection type is formed together.
3. the projection type compound mandrel as described in claim 1 for elastic flexural pivot, it is characterised in that: the basic mandrel
It is made of metal material, mandrel projection is used to be made than basic mandrel material different hardness or the material of density, to guarantee base
Plinth mandrel, mandrel projection form the difference of hardness or density between the two.
4. the projection type compound mandrel as described in claim 1 for elastic flexural pivot, it is characterised in that: the mandrel projection
It is made of high molecular material, polymer composite or lightweight metal material, by by high molecular material, macromolecule composite wood
Material or lightweight metal material are compounded on the outer surface of basic mandrel, form elastic flexural pivot composite core axis.
5. the projection type compound mandrel as claimed in claim 4 for elastic flexural pivot, it is characterised in that: the macromolecule material
Material is plastic material or fabric material, and plastic material or fabric material are combined with each other with basic mandrel, formed
Elastic flexural pivot composite core axis.
6. the projection type compound mandrel as claimed in claim 5 for elastic flexural pivot, it is characterised in that: the plastic material
For fibre reinforced resin material.
7. the projection type compound mandrel as claimed in claim 4 for elastic flexural pivot, it is characterised in that: the light-weight metal
Material is the metal material that density is lower than basic mandrel, including aluminium, copper, magnesium and its alloy.
8. the projection type compound mandrel as described in claim 1 for elastic flexural pivot, it is characterised in that: the mandrel projection
Take round, ellipse, polygonized structure or circular arc in conjunction with the other shapes with straight line in conjunction with basic mandrel, basic mandrel and
The radial section of mandrel projection is round, ellipse, the Arbitrary Shape Cross Section of polygonized structure or circular arc in conjunction with straight line, mandrel
Projection is wrapped in the Arbitrary Shape Cross Section appearance of circle, ellipse, polygonized structure or the circular arc of basic mandrel in conjunction with straight line
On face.
9. the projection type compound mandrel as described in claim 1 for elastic flexural pivot, it is characterised in that: the basic mandrel
The axial cross section at middle part is linear structure, concave or convex structure.
10. the projection type compound mandrel as described in claim 1 for elastic flexural pivot, it is characterised in that: the basic core
The annular knurl, groove or boss of the structure feature that can be improved plastics package power are provided in the middle part of axis.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109340247A (en) * | 2018-11-07 | 2019-02-15 | 博戈橡胶塑料（株洲）有限公司 | A kind of elasticity flexural pivot compound mandrel of projection type |
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2018
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109340247A (en) * | 2018-11-07 | 2019-02-15 | 博戈橡胶塑料（株洲）有限公司 | A kind of elasticity flexural pivot compound mandrel of projection type |
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