CN106248015B - The three-coordinates measuring machine measurement axis and production method of carbon fiber invar composite structure - Google Patents
The three-coordinates measuring machine measurement axis and production method of carbon fiber invar composite structure Download PDFInfo
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- CN106248015B CN106248015B CN201610738028.4A CN201610738028A CN106248015B CN 106248015 B CN106248015 B CN 106248015B CN 201610738028 A CN201610738028 A CN 201610738028A CN 106248015 B CN106248015 B CN 106248015B
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- carbon fiber
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- internal layer
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
- G01B21/04—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness by measuring coordinates of points
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- Moulding By Coating Moulds (AREA)
- Inorganic Fibers (AREA)
Abstract
The three-coordinates measuring machine measurement axis and production method of carbon fiber invar composite structure.The invention discloses a kind of three-coordinates measuring machines of carbon fiber invar composite structure to measure axis, including shell and internal layer, the shell is made of invar, shell wraps internal layer, internal layer is made of carbon fiber, and internal carbon fibers are formed by high temperature and pressure and shell invar co-curing, is equipped with several connectors extruded on internal layer, connector is mainly the external interface needs due to three-dimensional coordinates measurement axis, while can reinforce the bonding strength of shell Yu internal layer through-thickness.The three-coordinates measuring machine of carbon fiber invar composite structure of the invention measures axis, in the case where not changing size, increases intensity and alleviates weight, reduces caused by measurement axis measuring basis as caused by thermal expansion is impaired and inertia force and measures shaft distortion.
Description
Technical field
The present invention relates to the three-coordinates measuring machine of carbon fiber invar composite structure measurement axis and production methods, belong to three coordinates
The production field of measuring instrument.
Background technique
Three-coordinates measuring machine is one of common measuring instrument, it can quickly and easily measure some common measurements
The part size parameter that instrument can not measure.The measurement axis of existing three-coordinates measuring machine is mostly made of aluminum alloy materials,
Since aluminum alloy materials thermal expansion coefficient is big, general measure axis measures the measuring basis of axis after using several years --- grating
Ruler will be damaged, and precision changes.Therefore, how to overcome the problems, such as that the precision for measuring axis is impaired becomes currently urgently to be resolved ask
Topic.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the present invention provides a kind of carbon fiber invar combination knot
The three-coordinates measuring machine measurement axis and production method of structure increase the intensity of axis and alleviate in the case where not changing size
The weight of axis reduces caused by measurement axis measuring basis as caused by thermal expansion is impaired and inertia force and measures shaft distortion.
Technical solution: in order to solve the above technical problems, a kind of three coordinates of carbon fiber invar composite structure of the invention are surveyed
It measures instrument and measures axis, including shell and internal layer, the shell are made of invar, shell wraps internal layer, and internal layer is made of carbon fiber,
Internal carbon fibers are formed by high temperature and pressure and shell invar co-curing, are equipped with several connectors, connector extruded on internal layer
Mainly since the external interface of three-dimensional coordinates measurement axis needs, while the connection that can reinforce shell and internal layer through-thickness is strong
Degree.
Preferably, the shell with a thickness of 2-5mm, internal layer with a thickness of 3-6mm, in the certain situation of overall thickness
Under, internal layer thickness is greater than outer casing thickness.
Preferably, the chemical component of the invar is nickel 36%, iron 63.8%, carbon 0.2%.
Preferably, the carbon fiber is polyacrylonitrile-based carbon fibre, material trademark selects M40J or more, laying direction
Using 0 °, ± 30 °, 0 °, ± 45 ° of alternation methods, every thickness degree 0.1mm.
A kind of production method of the three-coordinates measuring machine measurement axis of above-mentioned carbon fiber invar composite structure, including following step
It is rapid:
(1) shell invar mold is processed, and is carried out half smart Milling Process and finishing first, is then carried out modifier treatment, tightly
Then shape is refined, until meeting subject to design requirement；
(2) carbon fiber is preforming, and carbon fiber is alternately laid in internal model according to 0 °, ± 30 °, 0 °, ± 45 ° of angle,
Uniform release agent is smeared on internal model outer surface before laying, and it is thin to wrap up on the outer surface of internal model a strata tetrafluoroethene
Film is formed in laid course using setting agent between carbon fiber layer every 500mm distance, at the same control environment temperature 25 DEG C ±
2 DEG C, it is ensured that laid course carbon cloth surface has glues feel slightly, after the completion of laying, smears uniform J133 in carbon fiber surface
Adhesive is hung 3~5 minutes, and size, can be smaller can just be advisable into shell invar mold after laying, but cannot be big
In external mold internal diameter in order to avoid fiber fold or angle change occur when preform is filled in external mold influences performance；
(3) internal model is taken out before solidification, pays attention to pattern draft direction, it is ensured that extracted out from microcephaly；
(4) entire carbon fiber is placed in shell invar mold, shell invar both mold ends cover end cap, whole into hot pressing
Tank, and pressure-air inlet duct is installed on an end cap for wherein staying air inlet；
(5) it checks leakproofness, carries out elevated cure according to the corresponding carbon fiber trade mark and resin system, it is general first small 2
When it is interior be heated to 120 DEG C, holding mould inner pressure is 2Kg, and 165 DEG C are then heated in 2 hours, keeps pressure in 5kg, protects
Warm pressure maintaining 6 hours, is then shut off autoclave power supply and air pressure switch, it is to be cooled to room temperature when take out；
(6) axis surface is refined, and stays 0.2mm machining allowance；
(7) according to the installation diagram of axis with connecting hole is beaten, guarantee that hole and surface verticality are less than 0.01mm；
(8) J133 adhesive is smeared on the processed connector surface of surface anodization, is buried after then using locating template
It is kept for 120 DEG C of temperature into curing oven on axis, and integrally, the duration 4 hours or more, is no more than 8 hours；
(9) final smoothing integrally meets design requirement, it is ensured that the accuracy of form and position is better than 0.005mm/1000mm.
The utility model has the advantages that the three-coordinates measuring machine of carbon fiber invar composite structure of the invention measures axis, do not changing size
In the case where, it increases intensity and alleviates weight, it is impaired and used to reduce measurement axis measuring basis as caused by thermal expansion
Shaft distortion is measured caused by property power.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is the laying schematic diagram of carbon fiber in Fig. 1.
Specific embodiment
As depicted in figs. 1 and 2, a kind of three-coordinates measuring machine of carbon fiber invar composite structure of the invention measures axis, packet
Shell 2 and internal layer 1 are included, the shell 2 is made of invar, and shell 2 wraps internal layer 1, and internal layer 1 is made of carbon fiber, internal carbon
Fiber is formed by high temperature and pressure and shell invar co-curing, several connectors 3 are equipped on internal layer 1, and connector 3 is main
It is the external interface needs due to three-dimensional coordinates measurement axis, while shell 2 can be reinforced and the connection of 1 through-thickness of internal layer is strong
Degree.
In the present invention, the shell 2 with a thickness of 2-5mm, internal layer 1 with a thickness of 3-6mm, in the certain feelings of overall thickness
Under condition, 1 thickness of internal layer is greater than 2 thickness of shell.The chemical component of the invar is nickel 36%, iron 63.8%, carbon 0.2%, utilization
The small feature of the invar coefficient of expansion greatly strengthens the intensity of measurement axis.
In the present invention, carbon fiber is polyacrylonitrile-based carbon fibre, and material trademark selects M40J, laying direction using 0 °,
± 30 °, 0 °, ± 45 ° of alternation methods, i.e., 0 °, 30 °, -30 °, 0 °, 45 °, -45 ° of alternation methods, guarantee the bending stiffness of axis, make
Maximum rigidity is obtained along principal direction of stress；The directional angle of laying design so that born in the axis course of work groundwork load with
And the direction of movement dynamic loading has rigidity as big as possible, and other directions are not due to almost stressing, thus can be with when designing
Isotropic metal material is thus compared in less consideration, the efficiency of material can more be played in the direction and position of needs,
To which product has higher specific strength, specific stiffness, very light in weight.Every thickness degree 0.1mm is by the way of paved in multi-layers
The maximum high-performance using carbon fiber in the axial direction, according to measurement axis Impact direction, i.e. gravity and axial pulling force,
Selected carbon fiber laying angle is 0 °.Every layer, with a thickness of 0.1mm, totally 40 layers, is selected the polyacrylonitrile-based carbon fibre of M40J to have
High-intensitive and high tensile modulus greatly improves the intensity of measurement axis, while polyacrylonitrile-based carbon fibre material is with lower
Density alleviates the weight of measurement axis.
In the present invention, the external dimensions of design three-coordinates measuring machine measurement axis is 140mm*140mm, the thickness of shell 2
For 2mm, internal layer 1 with a thickness of 4mm, the accuracy of form and position is better than 0.005mm/1000mm.
A kind of production method of the three-coordinates measuring machine measurement axis of above-mentioned carbon fiber invar composite structure, including following step
It is rapid:
(1) shell invar mold is processed, and is carried out half smart Milling Process and finishing first, is then carried out modifier treatment, tightly
Then refine shape, until shell invar mold external dimensions be 140mm*140mm, then select suitable internal model, internal model
Exterior surface dimension be 128mm*128mm；
(2) carbon fiber is preforming, as shown in Fig. 2, carbon fiber is replaced laying according to 0 °, ± 30 °, 0 °, ± 45 ° of angle
In internal model, uniform release agent is smeared on internal model outer surface before laying, and a strata four is wrapped up on the outer surface of internal model
Fluoroethylene film is formed in laid course using setting agent between carbon fiber layer every 500mm distance, while controlling environment temperature
At 25 DEG C ± 2 DEG C, it is ensured that laid course carbon cloth surface has glues feel slightly, after the completion of laying, smears in carbon fiber surface
Uniform J133 adhesive, hangs 3~5 minutes, and size, can be smaller can just be advisable into shell invar mold after laying, but
It is that cannot be greater than external mold internal diameter in order to avoid fiber fold or angle change influence performance occur when preform is filled in external mold；
(3) internal model is taken out before solidification, pays attention to pattern draft direction, it is ensured that extracted out from microcephaly；
(4) entire carbon fiber is placed in shell invar mold, shell invar both mold ends cover end cap, whole into hot pressing
Tank, and one end of air inlet is wherein being stayed to install pressure-air inlet duct；
(5) it checks leakproofness, carries out elevated cure according to the corresponding carbon fiber trade mark and resin system, it is general first small 2
When it is interior be heated to 120 DEG C, holding mould inner pressure is 2Kg, and 165 DEG C are then heated in 2 hours, keeps pressure in 5kg, protects
Warm pressure maintaining 6 hours, is then shut off autoclave power supply and air pressure switch, it is to be cooled to room temperature when take out；
(6) size and flatness of detection axis；
(7) axis surface is refined, and stays 0.2mm machining allowance；
(8) according to the installation diagram of axis with connecting hole is beaten, guarantee that hole and surface verticality are less than 0.01mm；
(9) J133 adhesive is smeared on the processed connector surface of surface anodization, is buried after then using locating template
It is kept for 120 DEG C of temperature into curing oven on axis, and integrally, the duration 4 hours or more, is no more than 8 hours；
(10) final smoothing integrally meets design requirement, it is ensured that the accuracy of form and position is better than 0.005mm/1000mm.
In the present invention, the mold of shell 2 is actually a part of product, on the one hand can guarantee the de- of product in this way
Mould is fairly simple, and will not be because of the quality for influencing product during de- external mold；It on the other hand is the surface matter of product itself
Amount require it is very high, it is so to guarantee product surface precision, the surface accuracy of conventional method carbon fiber be it is relatively low, be not inconsistent
Close the requirement of the present apparatus.
Because product be diameter 140mm, 3 meters of length how long square tube, herein face paving carbon fiber it is difficult.So we
It is first preforming in internal model by prefabricated carbon fiber in internal model, then entirely fill in, then internal model is taken out, then two
End, which separately closes, to be come, and then pressure-air is filled in the inside, and last entire inlet box guarantees product quality.
Molds and products will be made into one piece, and on the one hand play the high machinability of metal material；On the other hand it sends out
High specific strength, the characteristic of low-density for waving carbon fibre material reach existing external beautiful high-precision, and have the high-strength of inherence
The advantages of degree and lightweight.
The above is only a preferred embodiment of the present invention, it should be pointed out that: for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (3)
1. a kind of carbon fiber invar composite structure three-coordinates measuring machine measurement axis production method, the measurement axis include shell and
Internal layer, the shell are made of invar, and shell wraps internal layer, and internal layer is made of carbon fiber, are equipped with several extruded on internal layer
Connector, the chemical component of the invar are nickel 36%, iron 63.8%, carbon 0.2%, which comprises the following steps:
(1) shell invar mold is processed, and is carried out half smart Milling Process and finishing first, is then carried out modifier treatment, and then
Shape is refined, until meeting subject to design requirement；
(2) carbon fiber is preforming, carbon fiber is alternately laid in internal model according to 0 °, ± 30 °, 0 °, ± 45 ° of angle, laying
Uniform release agent is smeared on internal model outer surface before, and wraps up one layer of polytetrafluoroethylene film on the outer surface of internal model, paving
It is formed between carbon fiber layer using setting agent during putting every 500mm distance, while controlling environment temperature at 25 DEG C ± 2 DEG C,
After the completion of laying, uniform J133 adhesive is smeared in carbon fiber surface, is hung 3 ~ 5 minutes；
(3) internal model is taken out before solidification, pays attention to pattern draft direction, it is ensured that extracted out from microcephaly；
(4) entire carbon fiber to be placed in shell invar mold, shell invar both mold ends cover end cap, and it is whole into autoclave,
And pressure-air inlet duct is installed on an end cap for wherein staying air inlet；
(5) it checks leakproofness, 120 DEG C is first heated in 2 hours, holding mould inner pressure is 2kg, is then added in 2 hours
Heat keeps pressure in 5kg, heat-insulation pressure keeping 6 hours, is then shut off autoclave power supply and air pressure switch to 165 DEG C, to be cooled
It is taken out when to room temperature；
(6) axis surface is refined, and stays 0.2mm machining allowance；
(7) according to the installation diagram of axis with connecting hole is beaten, guarantee that hole and surface verticality are less than 0.01mm；
(8) J133 adhesive is smeared on the processed connector surface of surface anodization, is then embedded on axis, and whole entering to dry case
Solidification is kept for 120 DEG C of temperature, the duration 4 hours or more, is no more than 8 hours；
(9) final smoothing integrally meets design requirement.
2. the production method of the three-coordinates measuring machine measurement axis of carbon fiber invar composite structure according to claim 1,
Be characterized in that: the shell with a thickness of 2-5mm, internal layer with a thickness of 3-6mm, in the case where overall thickness is certain, inner-layer thick
Degree is greater than outer casing thickness.
3. the production method of the three-coordinates measuring machine measurement axis of carbon fiber invar composite structure according to claim 1,
Be characterized in that: the carbon fiber be polyacrylonitrile-based carbon fibre, material trademark select M40J or more, laying direction using 0 °,
± 30 °, 0 °, ± 45 ° of alternation methods, every thickness degree 0.1mm.
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