CN109340248A - A kind of elastic flexural pivot with compound projection mandrel - Google Patents
A kind of elastic flexural pivot with compound projection mandrel Download PDFInfo
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- CN109340248A CN109340248A CN201811318923.6A CN201811318923A CN109340248A CN 109340248 A CN109340248 A CN 109340248A CN 201811318923 A CN201811318923 A CN 201811318923A CN 109340248 A CN109340248 A CN 109340248A
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- mandrel
- projection
- basic
- flexural pivot
- compound
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C11/00—Pivots; Pivotal connections
- F16C11/04—Pivotal connections
- F16C11/06—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints
- F16C11/08—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints with resilient bearings
- F16C11/083—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints with resilient bearings by means of parts of rubber or like materials
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C11/00—Pivots; Pivotal connections
- F16C11/04—Pivotal connections
- F16C11/06—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints
- F16C11/0604—Construction of the male part
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C11/00—Pivots; Pivotal connections
- F16C11/04—Pivotal connections
- F16C11/06—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints
- F16C11/0614—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints the female part of the joint being open on two sides
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C11/00—Pivots; Pivotal connections
- F16C11/04—Pivotal connections
- F16C11/06—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints
- F16C11/0695—Mounting of ball-joints, e.g. fixing them to a connecting rod
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2204/00—Metallic materials; Alloys
- F16C2204/10—Alloys based on copper
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2204/00—Metallic materials; Alloys
- F16C2204/20—Alloys based on aluminium
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2204/00—Metallic materials; Alloys
- F16C2204/26—Alloys based on magnesium
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2208/00—Plastics; Synthetic resins, e.g. rubbers
- F16C2208/02—Plastics; Synthetic resins, e.g. rubbers comprising fillers, fibres
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Laminated Bodies (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
A kind of elastic flexural pivot with compound projection mandrel, including mandrel and elastomer, elastomer are rubber material or polyurethane material, and elastomer is wrapped in mandrel in appearance；The mandrel is the compound mandrel that two parts combination is constituted, wherein, the central part of mandrel is basic mandrel, it is mandrel projection in the part of the middle section protrusion of basic mandrel, mandrel projection and basic the mandrel part that be respectively two different, and mandrel projection is fixed is wrapped in position among basic mandrel in appearance, immovable fitting is connected as one, combination forms compound mandrel.This elastic flexural pivot made by compound projection mandrel, not only it is able to maintain the flexural pivot characteristic of original projection core barrel, and since mandrel projection part and basic mandrel are two parts composite structure, it can effectively adjust and change mandrel characteristic, so that flexural pivot in systems can buffered hf impact, play the role of flexible connection；The weight of flexural pivot can be also reduced simultaneously, realize flexural pivot lightweight, mandrel cost of manufacture can be greatly reduced.
Description
Technical field
The present invention relates to a kind of mandrel and preparation method thereof of elastic rubber flexural pivot, refer in particular to a kind of with projection
The mandrel and preparation method thereof of elastic rubber flexural pivot is mainly used for improving the elastic rubber flexural pivot mandrel projection part for having projection
Comprehensive performance, prevent mandrel projection part from stress occur and excessively concentrate, reduce projection shape mandrel processing and fabricating cost, lower
The own wt of mandrel；Belong to elastic damping structure member manufacture technology field.
Background technique:
The flexible connector that elastic flexural pivot is generally combined by rubber or polyurethane and metalwork, it is gentle with flexible connected
The effect of vibratory impulse is rushed, so being widely used in flexible connected position, plays the role of vibration and noise reducing, is widely used in soft
Property coupled position, play vibration and noise reducing, as present track vehicular traffic and automobile much connect in all use bullet
Property flexural pivot connection.
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.
By patent retrieval do not find have with the patent literature report of same technique of the present invention, have certain relationship with the present invention
Patent mainly have it is following:
1, Patent No. CN201410239414.X, a kind of entitled " vehicle core shaft ", applicant are as follows: the high-incidence automobile control in Ningbo
The patent of invention of system limited liability company, which disclose a kind of vehicle core shafts.The vehicle core shaft, including by composite wood
Hose made of expecting and at least one steel core are equipped with concentric setting and spiral flat filament in hose, and described is flat
Silk hard-pressed bale is 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 ingredient
Composition: long-chain nylon: 80 parts, polyamide elastomer: 5-20 parts, PP:5-10 parts of modified by maleic acid anhydride graft, montmorillonite: 5-10
Part, 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.
Summary of the invention
It is an object of the invention to be directed to the deficiency of existing elastic ball hinge pin axis, a kind of further improvement mandrel projection is proposed
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 can be with
The weight for effectively mitigating mandrel, improves the performance of mandrel projection part, reduces the production cost of mandrel.
In order to reach this purpose, the present invention provides a kind of elastic flexural pivots with compound projection mandrel, including mandrel
And elastomer, elastomer are rubber or polyurethane material, elastomer is wrapped on the outer surface of mandrel；The mandrel is two parts
Combine the compound mandrel constituted, wherein the central part of mandrel is basic mandrel, in the portion of the middle section protrusion of basic mandrel
It is divided into mandrel projection, mandrel projection and basic the mandrel part that be respectively two different, and mandrel projection is fixed is wrapped in basis
Position in appearance, is closely connected as one among mandrel, and combination forms compound projection mandrel.
Further, the mandrel projection is respectively the two parts made of different materials, core from basic mandrel
Aixs cylinder block is fixed to be wrapped in basic mandrel centre position in appearance, is closely connected as one, combination forms compound projection mandrel.
Further, the basic mandrel is made of metal material, and mandrel projection is used than basic mandrel metal material
Hardness or the lower material production of density are expected, so that mandrel projection and basic mandrel form rigidity gradient；Mandrel projection material simultaneously
Expect that hardness or density are higher than elastomeric material, by adjusting the composite material of mandrel projection mandrel projection characteristic is changed
Become, meets the needs of various flexural pivots.
Further, the mandrel projection is using high molecular material or 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 are by being molded, being molded by mandrel projection, die casting, squeeze
It forms out, or melting is combined with each other, forms elastic flexural pivot composite core axis.
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 fitted close on the Arbitrary Shape Cross Section outer surface in conjunction with straight line, forms the compound mandrel of one.
Further, the mandrel projection and basic mandrel are the cooperation of dentation inside and outside circle structure；It is right on basic mandrel
Title is provided with uniformly distributed tooth socket, is symmetrically provided with uniformly distributed tooth, the uniformly distributed tooth set of mandrel projection on the inner hole that mandrel projection matches
On the uniformly distributed tooth socket of basic mandrel, forming tight fit or the mandrel projection and basic mandrel is inside and outside flat flute profile
Circle structure cooperation；It is symmetrically opened on basic mandrel there are two flat, symmetrically opens that there are two flat on the inner hole that mandrel projection matches
Slot, two flat slots of mandrel projection cover in two flats of basic mandrel, are formed and are fitted close.
The present invention has the advantages that
Flexural pivot mandrel is divided into two parts in projection part and basic mandrel by the present invention, and different material production is respectively adopted,
Combination forms 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 requirement
While, the processing technology of present elastic ball hinge pin axis can be greatly simplified；It directlys adopt profile and makes basic mandrel, then upper
Face composite core aixs cylinder block eliminates the forging manufacturing procedure of conventional projection core barrel now；
2, it after mandrel separates projection, is in addition fabricated separately, mandrel projection part can be made to be more easier to be changed,
To be more effectively carried out the structural adjustment of projection, 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 ball
The integral, flexible structure of hinge more optimizes, from basic mandrel to three layers of three kinds of material of mandrel projection and elastic component, by it is hard, in it is hard,
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, directly
Mandrel projection is made by moulding process such as injection molding, molding, extrusion or die casting, cost is more compared to unitary piece of metal cost of manufacture
Low, 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 one embodiment of the invention；
Fig. 3 is the elastic flexural pivot composite core axle construction schematic diagram of one embodiment of the invention；
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 next in the following with reference to the drawings and specific embodiments that the present invention is further explained.
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
Can be seen that the present invention relates to a kind of elastic flexural pivots with projection mandrel by attached drawing 2-3, and by metal core axle 1,
Rubber 2 and 3 three parts of housing combine to be formed, and metal core axle 1 is also the compound mandrel of projection type, at the intermediate position of metal core axle 1
There is adjustment projection；Entire mandrel is rod-like structure, including a columned basic mandrel 5, is at the intermediate position of mandrel rod 5
Adjust flexural pivot newly usable mandrel projection 4；The mandrel is allocated as two parts production, and a part is the base of mandrel stress bar part
Plinth mandrel 5(is as shown in Fig. 2), another part is that the mandrel projection 4(of the variable rigidity property of change flexural pivot is as shown in Fig. 3),
And mandrel 1 be combined by mandrel projection 4 and basic 5 two parts of mandrel shape at the compound mandrel of projection type, mandrel projection 4 is wrapped
It is rolled on the outer surface at the intermediate position of basic mandrel 5, forms 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 is compound using high molecular material or macromolecule
Material production, with guarantee basic mandrel and mandrel projection formed therebetween with one it is hard, in hard rigidity gradient；Passing through will
High molecular material or polymer composite are compounded on the outer surface of basic mandrel, form 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 only slightly different in structure first is that the same, a kind of with compound projection
The elastic flexural pivot of mandrel, including mandrel and elastomer, elastomer are rubber or polyurethane material, and elastomer is wrapped in the outer of mandrel
On surface；The mandrel is the compound mandrel that two parts combination is constituted, wherein the central part of mandrel is basic mandrel, in base
The part of the middle section protrusion of plinth mandrel is mandrel projection, mandrel projection and the basis mandrel part that be respectively two different,
And mandrel projection is fixed is wrapped in position among basic mandrel and in appearance, is closely connected as one, combination forms compound projection
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 uses lower than basic mandrel material hardness other
Light metal material, if copper, aluminium, magnesium and its alloy material make, to guarantee that basic mandrel, mandrel projection are formed therebetween with one
Firmly, the difference of hard rigidity gradient or density in.
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 only slightly different in structure first is that the same, a kind of with compound projection
The elastic flexural pivot of mandrel, including mandrel and elastomer, elastomer are rubber or polyurethane material, and elastomer is wrapped in the outer of mandrel
On surface；The mandrel is the compound mandrel that two parts combination is constituted, wherein the central part of mandrel is basic mandrel, in base
The part of the middle section protrusion of plinth mandrel is mandrel projection, mandrel projection and the basis mandrel part that be respectively two different,
And mandrel projection is fixed is wrapped in position among basic mandrel and in appearance, is closely connected as one, combination forms compound projection
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 only slightly different in structure first is that the same, a kind of with compound projection
The elastic flexural pivot of mandrel, including mandrel and elastomer, elastomer are rubber or polyurethane material, and elastomer is wrapped in the outer of mandrel
On surface；The mandrel is the compound mandrel that two parts combination is constituted, wherein the central part of mandrel is basic mandrel, in base
The part of the middle section protrusion of plinth mandrel is mandrel projection, mandrel projection and the basis mandrel part that be respectively two different,
And mandrel projection is fixed is wrapped in position among basic mandrel and in appearance, is closely connected as one, combination forms compound projection
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 only slightly different in structure first is that the same, a kind of with compound projection
The elastic flexural pivot of mandrel, including mandrel and elastomer, elastomer are rubber or polyurethane material, and elastomer is wrapped in the outer of mandrel
On surface；The mandrel is the compound mandrel that two parts combination is constituted, wherein the central part of mandrel is basic mandrel, in base
The part of the middle section protrusion of plinth mandrel is mandrel projection, mandrel projection and the basis mandrel part that be respectively two different,
And mandrel projection is fixed is wrapped in position among basic mandrel and in appearance, is closely connected as one, combination forms compound projection
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 technical solution of the present invention in conjunction with attached drawing；It is aobvious
So, described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.Based in the present invention
Embodiment, all other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the scope of protection of the invention.
The present invention has the advantages that
Flexural pivot mandrel is divided into two parts in projection part and basic mandrel by the present invention, and different material production is respectively adopted,
Combination forms 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 requirement
While, the processing technology of present elastic ball hinge pin axis can be greatly simplified；It directlys adopt profile and makes basic mandrel, then upper
Face composite core aixs cylinder block eliminates the forging manufacturing procedure of conventional projection core barrel now；
2, it after mandrel separates projection, is in addition fabricated separately, mandrel projection part can be made to be more easier to be changed,
To be more effectively carried out the structural adjustment of projection, 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 ball
The integral, flexible structure of hinge more optimizes, from basic mandrel to three layers of three kinds of material of mandrel projection and elastic component, by it is hard, in it is hard,
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, directly
Mandrel projection is made by moulding process such as injection molding, molding, extrusion or die casting, cost is more compared to unitary piece of metal cost of manufacture
Low, synthesis reduces cost of goods manufactured.
Claims (10)
1. a kind of elastic flexural pivot with compound projection mandrel, including mandrel and elastomer, elastomer is rubber material or poly- ammonia
Ester material, elastomer are wrapped in mandrel in appearance；It is characterized by: the mandrel is the composite core that two parts combination is constituted
Axis, wherein the central part of mandrel is basic mandrel, is mandrel projection, core in the part of the middle section protrusion of basic mandrel
Aixs cylinder block and basic the mandrel part that be respectively two different, and mandrel projection is fixed is wrapped in the outer of position among basic mandrel
On table, immovable fitting is connected as one, and combination forms compound mandrel.
2. as described in claim 1 with the elastic flexural pivot of compound projection mandrel, it is characterised in that: the mandrel projection with
Basic mandrel is respectively the two parts made of different materials, and mandrel projection is fixed to be wrapped in position among basic mandrel
In appearance, it is closely connected as one, combination forms compound projection mandrel.
3. as claimed in claim 2 with the elastic flexural pivot of compound projection mandrel, it is characterised in that: the basic mandrel is adopted
It is made of metal material, mandrel projection is made of material more lower than basic mandrel metal material hardness or density, so that core
Aixs cylinder block and basic mandrel form rigidity gradient；Mandrel projection material hardness or density are higher than elastomeric material simultaneously, pass through tune
The composite material of whole mandrel projection makes mandrel projection characteristic change, and meets the needs of various flexural pivots.
4. as claimed in claim 3 with the elastic flexural pivot of compound projection mandrel, it is characterised in that: the mandrel projection is adopted
It is made of high molecular material or 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. as claimed in claim 4 with the elastic flexural pivot of compound projection mandrel, it is characterised in that: the high molecular material
For plastic material or fabric material, plastic material or fabric material are combined with each other with basic mandrel, form bullet
The property compound mandrel of flexural pivot.
6. as claimed in claim 5 with the elastic flexural pivot of compound projection mandrel, it is characterised in that: the plastic material is
Fibre reinforced resin material.
7. as claimed in claim 4 with the elastic flexural pivot of compound projection mandrel, it is characterised in that: the light-weight metal material
Material is the metal material that density is lower than basic mandrel, including aluminium, copper, magnesium and its alloy.
8. as described in claim 1 with the elastic flexural pivot of compound projection mandrel, it is characterised in that: the mandrel projection with
Basic mandrel be by the way that mandrel projection is molded, is molded, die casting, extrusion molding, or melting be combined with each other, formed elastic ball
Cut with scissors compound mandrel.
9. as described in claim 1 with the elastic flexural pivot of compound projection mandrel, it is characterised in that: the mandrel projection with
Basic mandrel takes round, ellipse, polygonized structure or circular arc in conjunction with the other shapes in conjunction with straight line, basic mandrel and core
The radial section of aixs cylinder block is round, ellipse, the Arbitrary Shape Cross Section of polygonized structure or circular arc in conjunction with straight line, and mandrel is prominent
Block is wrapped in the Arbitrary Shape Cross Section outer surface of circle, ellipse, polygonized structure or the circular arc of basic mandrel in conjunction with straight line
On, it is fitted close, forms the compound mandrel of one.
10. as described in claim 1 with the elastic flexural pivot of compound projection mandrel, it is characterised in that: the mandrel projection
It is the cooperation of dentation inside and outside circle structure with basic mandrel；It is symmetrically provided with uniformly distributed tooth socket on basic mandrel, matches in mandrel projection
Inner hole on be symmetrically provided with uniformly distributed tooth, the uniformly distributed tooth of mandrel projection covers on the uniformly distributed tooth socket of basic mandrel, is formed tight
Close fit or the mandrel projection and basic mandrel are the cooperation of flat flute profile inside and outside circle structure；It is symmetrically provided on basic mandrel
Two flats are symmetrically opened on the inner hole that mandrel projection matches there are two flat slot, and two flat slots of mandrel projection are covered in basic core
In two flats of axis, is formed and be fitted close.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811318923.6A CN109340248A (en) | 2018-11-07 | 2018-11-07 | A kind of elastic flexural pivot with compound projection mandrel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811318923.6A CN109340248A (en) | 2018-11-07 | 2018-11-07 | A kind of elastic flexural pivot with compound projection mandrel |
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| CN109340248A true CN109340248A (en) | 2019-02-15 |
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| CN201811318923.6A Pending CN109340248A (en) | 2018-11-07 | 2018-11-07 | A kind of elastic flexural pivot with compound projection mandrel |
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| CN110566569A (en) * | 2019-09-25 | 2019-12-13 | 博戈橡胶塑料（株洲）有限公司 | Manufacturing method of lightweight joint with rubber metal spherical hinge |
| CN110576293A (en) * | 2019-09-25 | 2019-12-17 | 博戈橡胶塑料（株洲）有限公司 | Method for manufacturing segmented combined thrust rod spherical hinge mandrel and thrust rod spherical hinge mandrel |
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