JPH08309925A - Fiber reinforced resin cylindrical body covering metal cylindrical body and production thereof - Google Patents

Abstract

PURPOSE: To provide a fiber reinforced resin cylindrical body covering a metal cylindrical body capable of covering a metal without requiring highly accurate pre-processing even in a long dimension and a large caliber and capable of suppressing the deterioration of accuracy even if subjected to heat treatment processing after covering. CONSTITUTION: In a fiber reinforced resin cylindrical body covering a metal cylindrical body 4 of which the longitudinal modulus of elasticity is 7.0×10<3> -7.5×10<3> kgf/mm<2> , the relation between the diameter dϕ of a fitting surface and a clamping flange δ is 3.12d<2> ×10<-6> +1.53d×10<-3> -6.88×10<-3> <=δ<=8.47d<2> ×10<-6> +1.95d×10<-3> -9.45×10<-3> . The fiber reinforced resin cylindrical body covering the metal cylindrical body is produced by a method wherein the fiber reinforced resin cylindrical body 1 is inserted in the metal cylindrical body 4 having the predetermined longitudinal modulus of elasticity after a clamping flange is prescribed and, after the metal cylindrical body 4 is heated so as to obtain the prescribed clamping flange, a squeeze processing method is used to perform covering.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to various types of metal-coated fiber-reinforced resin cylinders used as pillars, beams, reinforcements, etc. in the field of civil engineering and construction, synthetic resin film manufacturing equipment, printing equipment, etc. The present invention relates to a metal-coated fiber-reinforced resin roll used as an industrial roll and a method for producing the same.

[0002]

2. Description of the Related Art For example, a synthetic resin film manufacturing apparatus,
Most of the rolls used for industrial applications such as printing devices were made of metal, but the demand for rolls that can take advantage of the lightweight and high rigidity of fiber reinforced resin is growing. Particularly in the case of a long roll or a large-diameter metal roll, the maintainability and the change in roll rotation speed control due to the increase in weight have been problems.

However, the metal roll is easy to be surface-treated, such as smoothing the surface or applying a plating treatment,
There is an advantage that grooves can be formed on the roll surface.

The above-mentioned disadvantages of the metal roll are solved,
As a method of utilizing the advantage, Japanese Patent Publication No. 59-45843, Japanese Utility Model Publication No. 63-69812, Japanese Utility Model Publication No. 63-101324, and Japanese Patent Laid-Open No.
Japanese Patent No. 286847 describes a composite roll in which a fiber-reinforced resin cylinder is covered with a metal cylinder. For example,
Japanese Patent Laid-Open No. 3-1937 describes that a heated thin metal short tube is arranged on the outer peripheral surface of a fiber-reinforced composite resin rod-shaped molded product. According to the above method, after the thin metal short tube is cooled to room temperature, an interference fit effect is produced. However, in the above-mentioned manufacturing method, it is necessary to process the thin-walled metal short tube in advance with high precision in accordance with the outer circumference of the fiber-reinforced composite resin rod-shaped molded body. Further, since the metal to be coated is a short tube, there is a problem that the number of steps is increased when coating a long rod-shaped body.

Not only in Japanese Unexamined Patent Publication No. 3-1937, but in shrink fitting and press fitting, which are generally used in the prior art to coat a metal cylinder on a fiber reinforced resin cylinder, both It is necessary to process the bending and roundness of the cylindrical body in advance with high accuracy, which leads to an increase in cost. In addition, since the temperature of the metal cylinder decreases during the insertion of the fiber-reinforced resin cylinder into the metal cylinder, and the thermal expansion dimension decreases, there is a disadvantage that it cannot be applied to a long roll or a large-diameter roll. . It is not preferable to raise the heating temperature of the metal cylindrical body so that the material of the metal cylindrical body or the fiber-reinforced resin cylindrical body as the inner cylinder may change.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to cover with a single metal cylindrical body that is long and has an interference. In order to provide a metal-coated fiber-reinforced resin cylinder. In addition, it is not necessary to perform high-precision processing before coating, and even if it is long and has a large diameter, the metal cylindrical body can be easily coated on the fiber-reinforced resin cylindrical body, and the coating processing can be performed. It is to provide a fiber-reinforced resin cylinder covered with a metal cylinder and a method for producing the same, which later gives heat resistance of about 80 ° C. Furthermore, it is another object of the present invention to provide a method for producing a metal-coated fiber-reinforced resin cylindrical body that prevents infiltration of water such as a plating solution into a fitting portion of a composite pipe by an easy means.

[0007]

In order to achieve the above object, the present invention has the following constitution.

The fiber-reinforced resin cylindrical body coated with the metallic cylinder of the present invention has a longitudinal elastic modulus of 7.0 × 10 ³ kgf / mm ² to 7.5.
In a fiber-reinforced resin cylinder coated with a metal cylinder of × 10 ³ kgf / mm ² , the relationship between the fitting surface diameter dφ and the tightening margin δ is 3.12d ² × 10 ^-6 + 1.53d × 10 ^-3 −6.88 × 10 ⁻³ ≦ δ ≦
The feature is 8.47d ² × 10 ^-6 + 1.95d × 10 ^-3 −9.45 × 10 ^-3 .

Here, the relationship between the fitting surface diameter dφ and the tightening margin δ is 3.12d ² × 10 ^-6 + 1.53d × 10 ^-3 -6.88 × 10 ^-3 ≤δ≤8.
47d ² × 10 ^-6 ＋ 1.95d × 10 ^-3 −9.45 × 10 ^-3 , the desired heat resistance is obtained when the longitudinal elastic modulus is not in the range of 7.0 to 7.5 × 10 ³ kgf / mm ^2. However, when heat is applied, the dimensional accuracy deteriorates. Alternatively, there is a possibility that the fiber-reinforced resin cylindrical body that is the inner cylinder is compressed too much due to excessive tightening.
Since the above-mentioned metal cylindrical body is for imparting a metallic property to the surface of the fiber reinforced resin cylindrical body, mechanical strength is not required, and the wall thickness may be finished to 0.1 to 3 mm. The metal cylinder according to the present invention is premised on satisfying the above properties.

As a metal satisfying the above range of longitudinal elastic modulus, there is, for example, an aluminum alloy.

Regarding the fiber-reinforced resin cylindrical body, carbon fiber, glass fiber, polyaramid fiber and the like are used as the reinforcing fiber. As the matrix resin, thermosetting resins such as epoxy, phenol and unsaturated polyester are generally used. The orientation of the reinforcing fibers also depends on the usage after the metal coating. However, in general, in order for the fiber-reinforced resin cylinder to withstand the tightening of the metal tube, an orientation of 0 ° to 15 ° with respect to the longitudinal direction and an angle of 80 ° to 90 ° with respect to the longitudinal direction, That is, coexistence with orientation in the circumferential direction is desired. The volume ratio of longitudinal fibers to circumferential fibers is
It is about 3: 1 to 6: 1, but the arrangement is arbitrary. Volume content of reinforcing fiber in fiber reinforced resin cylinder is 45% to 65%
Is. The wall thickness of the fiber-reinforced resin cylindrical body varies depending on the outer diameter of the cylindrical body and the conditions of use, but a thickness of 2 mm to 20 mm is formed by the filament winding method or prepreg lamination.

The fiber-reinforced resin cylinder covered with another metal cylinder according to the present invention has a longitudinal elastic modulus of 1.8 × 10 ⁴ kgf / mm.
^In a fiber-reinforced resin cylinder coated with a metal cylinder of ² to 2.3 × 10 ⁴ kgf / mm ² , the relationship between the fitting surface diameter dφ and the tightening margin δ is 9.24d ² × 10 ⁻⁷ + 8.86d × 10 ^-4 −7.11 × 10
^{It is characterized in that -3} ≤ δ ≤ 2.58d ² × 10 ^-6 + 1.34d × 10 ^-3 -1.73 × 10 ^-2 .

Here, the relationship between the fitting surface diameter dφ and the tightening margin δ is 9.24d ² × 10 ⁻⁷ + 8.86d × 10 ⁻⁴ −7.11 × 10 ⁻³ ≦ δ ≦ 2.
58d ² × 10 ^-6 ＋ 1.34d × 10 ^-3 −1.73 × 10 ^-2 Even if the longitudinal elastic modulus is not in the range of 1.8 to 2.3 × 10 ⁴ kgf / mm ² , the desired heat resistance is obtained. However, when heat is applied, the dimensional accuracy deteriorates.

Examples of the metal satisfying the above range of longitudinal elastic modulus include stainless steel.

In the fiber-reinforced resin cylinder covered with the metal cylinder according to the present invention, the ratio of the length of the fiber-reinforced resin cylinder to the diameter of the fiber-reinforced resin cylinder covered with the metal cylinder exceeds 5. It is preferably applied to those that are.

The fiber-reinforced resin cylinder covered with the metal cylinder of the present invention can be a fiber-reinforced resin roll covered with a metal cylinder having a header.

The roll comprises a header. In the embodiment of FIG. 2, a shaft portion 2b is attached to a header 2a at both ends of the fiber reinforced resin cylinder.

The header is usually fixed with an adhesive such as an epoxy resin. The header is carbon steel, stainless steel,
A metal such as an aluminum alloy is used. The header may be assembled after the boss and the shaft are separately processed, or may be integrated. Furthermore,
The boss may be a housing for a bearing or the like. That is, the header plays a role of engaging the fiber-reinforced resin roll coated with the metal cylinder with the external equipment.

In the present invention, a sealing mechanism is provided in the contact surface between the metal cylindrical body and the header to prevent moisture from entering the contact surface.

A gasket or an O-ring may be used as the sealing mechanism. Further, V packing, asbestos cloth, asbestos joint sheet, etc. can also be used. When using a gasket, it is possible to seal more effectively by applying a material having viscosity and sealing property such as silicon at the same time. The sealing mechanism may add a groove to the outer peripheral surface of the fiber-reinforced resin cylindrical body to be embedded in the groove, or may add a groove to the outer peripheral surface of the metal cylindrical body to embed in the groove.

The method for producing a fiber-reinforced resin cylinder coated with a metal cylinder according to the present invention is a method of reducing the diameter of the metal cylinder while the metal cylinder to be coated is preheated and thermally expanded. Then, the metal-made cylindrical body is tightly fitted and joined to the fiber-reinforced resin cylindrical body by allowing the metal-made cylindrical body to cool to room temperature after being brought into close contact with the fiber-reinforced resin cylindrical body.

As a means for reducing the diameter, there is, for example, a method of drawing by a die or a method of magnetic forming as disclosed in Japanese Patent Laid-Open No. 1-320137.

The inner peripheral surface of the metal cylindrical body is brought into close contact with the outer peripheral surface of the fiber reinforced resin cylindrical body by a diameter-reducing process.
At this time, the heating temperature of the metal cylindrical body needs to be higher than the intended use environment temperature after the diameter reduction drawing or the heating temperature for the plating treatment or the like. The reason is that the metal cylindrical body holds the fiber-reinforced resin cylindrical body in a tightened state even during the heat treatment after the magnetic forming process. However, at the same time, it is desired that the temperature is lower than the recrystallization temperature of the metal cylinder. Furthermore, when heating the metal cylinder, it is preferable to adjust the heating temperature so that the matrix resin of the fiber-reinforced resin cylinder, which is the inner cylinder, does not crystallize, or to cool the fiber-reinforced resin cylinder. The cooling method promotes heat dissipation by circulating a fluid such as compressed air or water inside the fiber-reinforced resin cylinder.

According to a method of applying a magnetic forming process as another means of reducing the diameter, the magnetic forming process of the metal cylindrical body is performed while the metal cylindrical body to be coated is preheated and thermally expanded. The diameter of the metal reinforced resin is reduced, and the fiber reinforced resin cylindrical body is brought into close contact with the fiber reinforced resin cylindrical body.

The "magnetic forming method" used in the present invention means that an electromagnetic coil is provided so as to surround a workpiece, and a strong magnetic field is created by instantaneously passing an electric current through the electromagnetic coil. The object to be processed is deformed by utilizing the repulsive magnetic field due to the eddy current induced in the object.
That is, in the present invention, after heating the metal cylindrical body by the heating unit, a current is passed through the electromagnetic coil to reduce the diameter of the metal cylindrical body by the magnetic forming process.

Another preferred method for producing a fiber-reinforced resin cylinder coated with a metal cylinder of the present invention is a method of coating the metal cylinder on the outer periphery of the fiber-reinforced resin cylinder by heating the metal cylinder. In the heating device, the fiber reinforced resin cylinder is inserted into the inner circumference of the metal cylinder while maintaining the thermal expansion of the metal cylinder, and then cooled to cool the metal cylinder. The body is tightly fitted and joined to the fiber-reinforced resin cylindrical body.

In general, when shrink fitting is performed, a work expanded by heating is once taken out from a heating device such as an oven and engaged with another work. However, when the heat capacity of the work to be heated and expanded is small, the expanded state is easily lost when the work is taken out to room temperature. Therefore, the work to be expanded, that is, in the present invention, the metal cylinder is installed in the heating device to secure a desired expansion margin, and the fiber-reinforced resin cylinder is quickly inserted therein. Examples of the heating device include a heating wire and an induction heating device. As a shape, it is preferable to have a shape of a furnace in which the whole metal cylindrical body is inserted.

The method for producing a fiber-reinforced resin cylindrical body coated with the metal cylindrical body according to the present invention can be applied to a method for producing a roll.

[0029]

When the fiber reinforced resin cylinder is coated with the metal cylinder, a metal cylinder made of a metal having a predetermined longitudinal elastic modulus is prepared, and the tightening margin after the coating is regulated. A fiber-reinforced resin cylindrical body coated with a metal-made cylindrical body with less accuracy deterioration such as shake when the cylindrical body is heated, as compared with the metal-coated fiber-reinforced resin cylindrical body. In addition, the metal cylinder is heated before being subjected to diameter reduction processing to be thermally expanded in the outer diameter direction, and the metal cylinder that has been thermally expanded is reduced in diameter to be made of metal on the outer peripheral surface of the fiber-reinforced resin cylinder. Adhere the inner surface of the cylinder. Then, it is cooled to room temperature and the fiber-reinforced resin cylinder and the metal cylinder are tightly fitted together.

[0030]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, one embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a partial cross-sectional view of a fiber-reinforced resin cylindrical body coated with a metal cylindrical body showing an embodiment of the present invention.

FIG. 2 is an axial sectional view of a fiber-reinforced resin cylindrical roll before coating a metal cylindrical body showing an embodiment of the present invention.

FIG. 3 is a partial cross-sectional view of a fiber reinforced resin cylindrical roll coated with a metal cylinder according to an embodiment of the present invention.

FIG. 4 is a perspective view showing a step of reducing the diameter of a fiber-reinforced resin roll coated with a metal cylinder according to an embodiment of the present invention by a magnetic forming method after heating.

In FIG. 2, the fiber-reinforced resin cylindrical body 1 is
Epoxy resin was used as the matrix resin, and carbon fiber was used as the reinforcing fiber. Headers 2a having shafts 2b are fitted in advance to both ends of this fiber-reinforced resin cylinder. The header 2a was fixed with an epoxy resin adhesive. Further, when the header 2a having the shaft portion 2b and the sealing mechanism 3 is fitted to both ends of the fiber reinforced resin cylinder 1 and the fiber reinforced resin cylinder 1 is covered with the metal cylinder 4, the metal cylinder 4 and the header 2a are in close contact with each other, and at the same time, a hermetic seal is established, so that a liquid such as a plating liquid can be prevented from entering.
After that, the sealing mechanism 3 remains in the roll. In this embodiment, as the sealing mechanism 3, a groove is preliminarily formed on the outer circumference of the header 2a, and an O-ring made of silicon rubber is embedded in the groove.

Next, the fiber-reinforced resin cylinder 1 fitted with the header 2 is covered with the metal cylinder 4. This state is shown in FIG. The metal cylinder 4 is JIS H408.
A pipe made of an aluminum alloy having a symbol A5052 shown in 0 was used. The clearance when the fiber-reinforced resin cylinder 1 is covered with the metal cylinder 4 depends on the diameter and the thickness of the metal cylinder 4. The metal cylinder in this example has an outer diameter of 1
04mm, inner diameter 100mm, cylinder surface length 1100mm, fiber reinforced resin cylinder 1 outer diameter 99mm (= mating surface diameter dφ), inner diameter 92
mm, and the surface length of the cylindrical body was 1040 mm. That is, the gap per diameter was 1 mm. In this case, the ratio of the length of the fiber-reinforced resin cylinder to the diameter of the fiber-reinforced resin cylinder covering the metal cylinder is 1040: 99 = 10.51.

The "magnetic forming method" used in the present invention is, as described above, provided with an electromagnetic coil so as to surround a workpiece, and a strong magnetic field is created by instantaneously passing an electric current through the electromagnetic coil. At that time, the repulsive magnetic field due to the eddy current induced in the work is used to deform the work. That is, in the present invention, as shown in FIG. 4, after heating the metal cylindrical body 4 by the heating unit 6, a current is passed through the electromagnetic coil 5 to magnetically form the metal cylindrical body 4. At this time, the heating temperature of the metal cylindrical body 4 needs to be higher than the heating temperature of the plating process or the like scheduled after the magnetic forming process. The reason is that the metal cylindrical body 4 holds the fiber-reinforced resin cylindrical body 1 in a tightened state even during the heat treatment after the magnetic forming process. However, at the same time, it is desired that the temperature is lower than the recrystallization temperature of the metal cylinder 4. Furthermore, when heating the metal cylinder 4, the heating temperature should be adjusted so that the matrix resin of the fiber-reinforced resin cylinder 1 which is the inner cylinder does not crystallize, or the fiber-reinforced resin cylinder 1 should be cooled. Is preferred. The cooling method promotes heat dissipation by circulating a fluid such as compressed air or water inside the fiber-reinforced resin cylindrical body 1. In this embodiment, the heat of the fiber-reinforced resin cylindrical body 1 is promoted by normal temperature air, and at the same time, the heating temperature of the metal cylinder 4 in the diameter-reduced portion is set to 119 ° C.

The metal cylindrical body 4 which is magnetically molded after heating and adhered to the outer peripheral surface of the fiber reinforced resin cylindrical body 1 is adhered by the magnetic molding method and then further cooled to cool the fiber reinforced resin cylindrical body 1. Since it contracts so as to be tightened in the inner diameter direction, the effect of interference fitting can be obtained at room temperature. The tightening margin at this time is set at the above processing temperature. However, if the inner diameter of the metal cylinder 4 is 100 mm, the tightening margin
When the thickness is less than 0.17 mm, the metal cylinder body 4 weakens the force for tightening the fiber-reinforced resin cylinder body 1 which is the inner cylinder when exposed to the plating treatment described later, and the inner cylinder and the outer cylinder are axially displaced from each other. Occurred. On the other hand, if the tightening margin exceeds 0.28 mm, the mutual tightening stress acting on the metal cylindrical body 4 exceeds the yield stress of the material, and the metal cylindrical body 4 may be plastically deformed, thereby damaging the expected metal structure. In this embodiment, the tightening margin is
It was 0.2 mm.

The fiber-reinforced resin roll coated with the metal cylindrical body 4 which has been cooled to room temperature after being coated as described above has a structure in which the metal cylindrical body 4 is heated even after being subjected to plating treatment after cooling at room temperature. Since the effect of tightening the cylindrical body 1 in the inner diameter direction remains, it is possible to prevent or reduce the deterioration of accuracy. The metal-coated fiber-reinforced resin cylinder produced according to this example has a temperature of 80 ° C. in the subsequent plating treatment.
The axial slippage between the metal cylinder and the fiber-reinforced resin cylinder after plating for 2 hours was 0.06 mm, which is equivalent to the quality of the metal-coated fiber-reinforced resin cylinder product after plating. There was no effect. When the tightening margin with the metal cylinder was set to 0.05 mm in the same manner, the slippage was 1.04 mm,
When the tightening margin was 0.1 mm, it was 0.81 mm.

FIGS. 2 to 4 show examples of rolls. In these examples, the header 2a and the shaft portion 2b are removed, and as shown in FIG. It can be a product such as a reinforcing material.

FIG. 5 is a cross-sectional view of a fiber reinforced resin roll before coating another preferable metal cylinder according to the present invention.

The fiber reinforced resin roll before coating the metal cylinder in FIG. 5 is a fiber reinforced resin roll composed of the fiber reinforced resin cylinder 1 and the metal header 2a.
A position where the metal header 2a has a groove 7 for filling an adhesive on a surface to be fitted with the fiber reinforced resin cylinder 1, and the fiber reinforced resin cylinder 1 is fitted with the metal header groove 7 Is characterized by having at least one pair of through holes 8 and 9 facing each other. When an adhesive is used as a means for engaging the metal header 2a with the fiber-reinforced resin cylinder 1, it is necessary to avoid the generation of air holes (voids) in the adhesive layer.
In the present invention, at least 1 is previously provided at a position where the fiber-reinforced resin cylindrical body 1 and the metal header groove portion 7 are fitted to each other.
A pair of opposing through-holes 8 and 9 are left open, positioned so that the through-holes 8 and 9 are perpendicular to the surface of the earth, and after the metal header is fitted, the lower through-hole 8 is bonded. Inject the agent. According to this method, the occurrence of voids can be prevented or reduced as compared with the method in which the adhesive is applied to the metal header groove portion 7.

After the metal header 2a shown in FIG. 5 is engaged with the fiber reinforced resin cylindrical body 1 using an adhesive, the metal cylindrical body 4 is provided around the fiber reinforced resin cylindrical body 1 and the metal header 2a. Cover closely.

FIG. 6 is a cross-sectional view of a fiber reinforced resin roll coated with yet another metal cylinder according to the present invention.

The fiber reinforced resin roll covering the metal cylinder in FIG. 6 has a header 2a joined to the end of the fiber reinforced resin cylinder 1, and the outer periphery of the fiber reinforced resin cylinder 1 and the header 2a. The metal cylindrical body 4 covered on a part of the outer periphery is closely attached along the shoulder portion of the header 2a,
Further, a pressing plate 12 having sealing mechanisms 10 and 11 is provided outside the metal cylindrical body 4.

The sealing mechanisms 10 and 11 are gaskets and O.
It is realized with a ring. A gasket or an O-ring is added to the pressing plate 12, and the sealing mechanism 1 in the pressing plate 12 is added.
The exposed surfaces of 0 and 11 are engaged with the surfaces of the metal header 2a and the metal cylindrical body 4. The metal header 2 a and the metal cylindrical body 4 are hermetically sealed by the sealing mechanisms 10 and 11 provided on the pressing plate 12. As the engaging means for the metal header, an instrument having a screw tightening or pressing function is used.

Next, the temperature of the metal cylinder of the present invention is raised in a heating device, and while the thermal expansion of the metal cylinder is maintained, fiber reinforced inside the metal cylinder inside the heating device. An example of an apparatus in which a resin cylinder is inserted and then cooled and the metal cylinder is interference-fitted and joined to the fiber-reinforced resin cylinder will be described.

FIG. 7 is a schematic view of a heating device for tightly fitting and joining the metal cylinder of the present invention to the fiber reinforced resin cylinder.

In FIG. 7, the metal cylinder 4 is connected to the heating wire 1
3 is a metal cylindrical body fixing base 15 of the heating device 14 in which is embedded.
The desired expansion allowance is secured while it is still installed, and the fiber-reinforced resin cylinder 1 is quickly inserted into the metal cylinder 4 from above. At this time, air is allowed to escape from the air vent hole 16 provided in the metal cylindrical fixing base 15.

After inserting the fiber reinforced resin cylinder 1 into the inner circumference of the metal cylinder 4, the inside of the heating device is cooled, or the fiber reinforced resin roll covered with the metal cylinder is taken out from the heating device and cooled. do it.

[0051]

According to the present invention, the longitudinal elastic modulus is 7.0 × 10 ³ kgf /
mm ² to 7.5 × 10 ³ kgf / mm ² Fiber reinforced resin cylinder coated with a metal cylinder, the relationship between the fitting surface diameter dφ and the tightening margin δ is 3.12d ² × 10 ^-6 ＋ 1.53d × 10 ^-3 −6.88 ×
10 ^-3 ≤ δ ≤ 8.47d ² × 10 ^-6 + 1.95d × 10 ^-3 -9.45 × 10 ^-3 , so the accuracy during manufacturing does not deteriorate even when used under high temperature conditions of about 80 ° C. Moreover, the yield stress of the metal cylindrical body to be coated is not exceeded.

The longitudinal elastic modulus is 1.8 × 10 ⁴ kgf / mm ² 〜
For a fiber-reinforced resin cylinder coated with a metal cylinder of 2.3 × 10 ⁴ kgf / mm ² , the mating surface diameter dφ and the tightening margin δ
Is 9.24d ² × 10 ^-7 ＋ 8.86d × 10 ^-4 −7.11 × 10 ^-3 ≦
δ ≦ 2.58d ² × 10 ^-6 + 1.34d × 10 ^-3 −1.73 × 10 ^-2 , so even if it is used under high temperature conditions of about 80 ° C, it does not impair the accuracy during manufacturing and the coating The yield stress of the metal cylindrical body is not exceeded.

In the fiber-reinforced resin cylinder covered with the metal cylinder according to the present invention, the ratio of the length of the fiber-reinforced resin cylinder to the diameter of the fiber-reinforced resin cylinder covered with the metal cylinder exceeds 5. Therefore, even with a long cylindrical body, the number of steps can be reduced as compared with the related art.

In the present invention, by providing a sealing mechanism in the contact surface between the fiber-reinforced resin cylinder and the metal cylinder, it is possible to prevent water from entering the contact surface.
Prevents electrolytic corrosion due to water.

The fiber-reinforced resin cylinder covered with the metal cylinder of the present invention can be a fiber-reinforced resin roll covered with a header or a metal cylinder provided with a header and a shaft portion. Also in the case, the effects of the present invention described above can be obtained. In a fiber reinforced resin cylinder comprising a metal cylinder covered with a fiber reinforced resin cylinder and a metal header, a groove for adhesive filling is formed on a surface of the metal header fitted with the fiber reinforced resin cylinder. Since the fiber-reinforced resin cylindrical body has at least one pair of through holes facing each other at the position where the fiber-reinforced resin cylindrical body is fitted with the above-mentioned metal header groove, a void is generated when the adhesive is injected from the lower through hole. Can be adhesively fitted without

A fiber reinforced resin cylinder, a header joined to the end of the fiber reinforced resin cylinder, a metal cylinder covered with the outer circumference of the fiber reinforced resin cylinder and a part of the outer circumference of the header. In a fiber reinforced resin roll coated with a metal cylinder, the metal cylinder is closely adhered along the header shoulder portion, and further, a pressing plate having a sealing mechanism is provided outside the metal cylinder, so during plating. It is possible to prevent a liquid such as a plating liquid from flowing into the metal-coated fiber-reinforced resin cylindrical body from the outside of the pressing plate during the finishing treatment such as.

In the method of coating the metal cylinder on the outer periphery of the fiber-reinforced resin cylinder, the metal cylinder is heated in advance and thermally expanded to reduce the diameter of the metal cylinder. Since the metal cylinder is brought into close contact with the reinforced resin cylinder, the metal cylinder becomes an interference fit after cooling at room temperature, and even if a heat treatment such as a plating treatment is performed, the deterioration of the shape such as the roundness and runout can be prevented or reduced.

In the method of coating the outer circumference of the fiber-reinforced resin cylindrical body with the metal cylindrical body, since the magnetic forming method is used as the drawing method of the metal cylindrical body, the fiber-reinforced resin cylindrical body and the metal are previously prepared. It is not necessary to process and adjust the fitting dimensions of the cylindrical body with high precision. Furthermore, since the metal cylindrical body is heated before being reduced in diameter by the magnetic forming method, it is possible to obtain an interference fit after cooling at room temperature.

In the method of coating the outer periphery of the fiber-reinforced resin cylinder with a metal, the temperature of the metal cylinder is raised in a heating device,
Since the fiber reinforced resin cylindrical body is inserted into the inner circumference of the metal cylindrical body in the heating device, the metal cylindrical body does not cause inner diameter contraction due to cooling, and the fiber reinforced resin cylindrical body can be used. Can be inserted smoothly.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional view of a fiber-reinforced resin cylindrical body coated with a metal cylindrical body showing an embodiment of the present invention.

FIG. 2 is an axial sectional view of a fiber-reinforced resin cylindrical roll before coating a metal cylindrical body showing an embodiment of the present invention.

FIG. 3 is a partial cross-sectional view of a fiber reinforced resin roll coated with a metal cylinder according to an embodiment of the present invention.

FIG. 4 is a perspective view showing a step of reducing the diameter of a fiber-reinforced resin roll coated with a metal cylindrical body according to an embodiment of the present invention after heating by a magnetic forming method.

FIG. 5 is a cross-sectional view of a fiber-reinforced resin roll before coating another preferable metal cylindrical body according to the present invention.

FIG. 6 is a cross-sectional view of a fiber-reinforced resin roll coated with yet another metallic cylinder according to the present invention.

FIG. 7 is a schematic view of a heating device for tightly fitting and joining the metal cylinder of the present invention to the fiber reinforced resin cylinder.

[Explanation of symbols]

 1 Fiber Reinforced Resin Cylindrical Body 2a Header 2b Shaft Section 3 Sealing Mechanism 4 Metal Cylindrical Body 5 Electromagnetic Coil 6 Heating Section 7 Header Groove Section 8, 9 Through Holes 10, 11 Sealing Mechanism 12 Holding Plate 14 Heating Device

Claims (13)

[Claims] 1. A longitudinal elastic modulus of 7.0 × 10 ³ kgf / mm ² to 7.5 ×
In a fiber-reinforced resin cylinder coated with a metal cylinder of 10 ³ kgf / mm ² , the relationship between the fitting surface diameter dφ and the tightening margin δ is 3.12d ² × 10 ^-6 ＋ 1.53d × 10 ^-3 − 6.88 × 10 ^-3 ≦ δ ≦ 8.
47d ² × 10 ^-6 + 1.95d × 10 ^-3 -9.45 × 10 ^-3 A fiber-reinforced resin cylinder covered with a metal cylinder. 2. A longitudinal elastic modulus of 1.8 × 10 ⁴ kgf / mm ² to 2.3 ×
In a fiber reinforced resin cylinder coated with a metal cylinder of 10 ⁴ kgf / mm ² , the relationship between the fitting surface diameter dφ and the tightening margin δ is 9.24d ² × 10 ^-7 ＋ 8.86d × 10 ^-4 − 7.11 × 10 ^-3 ≦ δ ≦ 2.
58d ² × 10 ^-6 + 1.34d × 10 ^-3 -1.73 × 10 ^-2 A fiber reinforced resin cylinder covered with a metal cylinder. 3. The metal according to claim 1, wherein the ratio of the length of the fiber-reinforced resin cylinder to the diameter of the fiber-reinforced resin cylinder covering the metal cylinder exceeds 5. A fiber-reinforced resin cylinder that covers the cylinder. 4. A fiber-reinforced resin cylindrical body coated with the metal cylindrical body according to any one of claims 1 to 3, which is provided with a header. Resin roll. 5. The fiber reinforced resin roll coated with a metal cylinder according to claim 4, wherein a sealing mechanism is provided in the contact surface between the metal cylinder and the header. 6. A fiber reinforced resin roll comprising a fiber reinforced resin cylinder covered with a metal cylinder and a metal header, wherein an adhesive is applied to a surface of the metal header fitted with the fiber reinforced resin cylinder. 6. The metal according to claim 5, which has a groove for filling and has at least one pair of through holes at positions where the fiber-reinforced resin cylindrical body is fitted with the metal header groove. A fiber reinforced resin roll that covers a cylinder. 7. A fiber-reinforced resin cylindrical body, a header joined to an end of the fiber-reinforced resin cylindrical body, a metal-cylindrical body coated on the outer periphery of the fiber-reinforced resin cylindrical body and a part of the outer periphery of the header. In a fiber-reinforced resin roll coated with a metal cylinder made of, the metal cylinder is closely attached along the header shoulder, and a pressing plate having a sealing mechanism is provided outside the metal cylinder. A fiber reinforced resin roll coated with a characteristic metal cylinder. 8. A method for coating a metal cylinder on the outer periphery of a fiber reinforced resin cylinder, wherein the metal cylinder is heated in advance and thermally expanded to reduce the diameter of the metal cylinder. Of the fiber-reinforced resin cylindrical body coated with the metal-made cylindrical body characterized in that the metal-made cylindrical body is tightly fitted and joined to the fiber-reinforced resin cylindrical body by cooling after being brought into close contact with the fiber-reinforced resin cylindrical body. Production method. 9. The method for producing a fiber-reinforced resin cylinder body coated with a metal cylinder body according to claim 8, wherein the diameter-reduction drawing process is a magnetic forming process. 10. A method for coating a metal on the outer circumference of a fiber reinforced resin cylinder, wherein the temperature of the metal cylinder is raised in a heating device, and the fiber reinforced resin cylinder is placed inside the metal cylinder in the heating device. A method for producing a fiber-reinforced resin cylindrical body coated with a metal cylindrical body, comprising inserting the body and then cooling the metal cylindrical body into an interference fit with the fiber-reinforced resin cylindrical body. 11. A fiber-reinforced resin cylinder covered with a metal cylinder has a ratio of the length of the fiber-reinforced resin cylinder to the diameter of the fiber-reinforced resin cylinder covered with the metal cylinder of more than 5. A method for producing a fiber-reinforced resin cylindrical body coated with the metal cylindrical body according to any one of claims 8 to 10. 12. A method for producing a fiber-reinforced resin cylindrical body coated with a metal cylindrical body according to claim 8, wherein the fiber-reinforced resin cylindrical body coated with the metal cylindrical body to be produced is A method for producing a fiber-reinforced resin roll coated with a metal cylinder, characterized by comprising a header. 13. A fiber reinforced resin cylindrical body, a header joined to an end of the fiber reinforced resin cylindrical body, an outer circumference of the fiber reinforced resin cylindrical body, and a metal cylinder covered with a part of the outer circumference of the header. The metal cylinder is characterized in that it is brought into close contact with the metal cylinder along the header shoulder portion, and that the metal cylinder is finished with a pressing plate having a sealing mechanism provided outside the metal cylinder. A method for producing a fiber-reinforced resin roll coated with.