JPS5914467A - Method of working surface of multiple layer endless metal belt - Google Patents

Abstract

PURPOSE:To form irregularities only on the surface of an endless metal belt for transmitting high power for improving durability of same by forming fine oil storing irregularities on the surface of the belt hoop with shot blast working. CONSTITUTION:A cylindrical metal blank 1 subjected to preform machining is fitted on a mandrel 2 and reciprocated while being squeezed by a rotating punch 3 to form a thin wall cylinde 1' which is attachably extended between a work roller 4 and a tension roller 6 and subjected to ring mill working by back-up rollers 5a-5c to provide respectively the thickness and peripheral length of belt hoops. Then, it is subjected to solution heat treatment and shot blast with glass beads of 60-80mu grain size to form oil storing irregularities of 1-3mumRZ surface roughness on the surfaces of the respective belt hoops. Ten belt hoops are overlapped on each other to produce a multiple layer endless belt by ring roll working. Thus, the coefficient of friction in the belt it-self is reduced to provide durability while fatigue strength of belt itself is improved by spinning working.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a surface processing method for a metal rope end belt, and in particular, a gap for forming a lubricating oil film between each belt hoop is Js1.
The present invention relates to a method of forming four minute irregularities.

#lt made of gold 1^ as a highly durable power transmission belt
An end belt has been developed. If it costs money (sea bream! li!
In the case of end belts, a metal digital multilayer endless belt is practical, which is made of thinner opposite ends of the belt and interlocked in multiple layers in order to reduce bending stress while maintaining high tensile strength.

However, the inner and outer surfaces of the belt hoops are seriously damaged due to the line types of the metal multi-layer 111 (the end belts are connected to each other between the belt hoops during use), and to prevent such damage, gaps for storing lubricating oil are required. is preferably formed between adjacent belt hoops.

The present invention relates to an improved method for forming a convex oil storage convex to be formed on the belt hoop IF1m, and the area where the convexity is to be deafened is used in a layered manner*1 ＾Multi-layer Ii (In the method of forming rough oil storage unevenness on the surface of each belt hoop of the end belt, shot blasting is applied to one or both sides of the upper belt hoop to create a fine surface roughness. The present invention provides a method for surface processing a metal multilayer end belt in which unevenness of 1 to 3 zzmRz is formed.

Since the present invention forms unevenness for oil storage on the surface of adjacent belt hoops combined in a multilayer structure as described above, the adjacent belt hoops are combined in a multilayer configuration. It is desirable that the interlayer gap t is substantially zero, that is, adjacent belt hoops are formed in close contact with each other.

Therefore, below, we will first explain with reference to the drawings an example of the right to manufacture such a metal multilayer end belt in which the interlayer gap between adjacent belt hoops is substantially zero, and describe such a metal manufacturing end belt. Covers surface processing methods.

Here, Fig. 1 is a process diagram of the above fI3 Taizo process, Fig. 21 (In) is a side sectional view of the raw material supplied to the same process, and Fig. 2 1al is a tube spinning f/JO process used in the same process. lcl is a schematic side view showing the state of ring mill processing of each small belt, ldl is a side cross-sectional view showing the ridge shape P4 in which the core metal material is inserted into the multiple belts. It is.

Metal W jll? The end belt material il+ is first machined into a cylindrical shape as shown in FIG. 2 la by preform machining. Next, this material (1) is pressed by a punch (3I) that reciprocates in the axial direction of the mandrel (21) and rotates at the same time while being fitted onto the mandrel (2), and is formed into a thin cylinder (1'). After cutting unnecessary ends of the obtained thin-walled cylinder (1'), a core metal material is inserted into the center, and then the thin-walled cylinder (1') is made into a thin-walled cylinder (1') as shown in FIG.
) between the work roller (4) and the tension roller (6), and the backup roller (5m), +5b
) and (5C) and rotate it (ring milling) to roughly finish the thickness and circumference of the belt, and then cut it to the width required for the belt.

By this ring milling, a circumferential length Ln corresponding to the n-th layer of the multi-layered sheet is sequentially formed. The metal belt hoops (
1-3), (1-2), . . . (-1-n) into multiple rings (
6) After assembling the metal base M, a heat-resistant core metal material (7) having a coefficient of thermal expansion larger than that of the metal base M is inserted as shown in Fig. 2 1dl, and the whole is heated. The multiple rings are plastically deformed between each layer and straightened to follow the dimensions of the core metal material, and then the whole is cooled and the core metal material is extracted to obtain a multi-layered, closely-adhered Sui-end belt made of Taichi Kin-X. It is. Here, ltl is the thickness of the belt hoop obtained.

In the method described above, the belt hoop is rough-processed by ring milling, and straightening is performed using a core metal material to easily and easily.
g The interlayer gap between adjacent PET hoops is essentially 0.
This is an excellent method in that it is simple to manage and allows extremely high precision control to be carried out, since belt alignment is automatically corrected. However, the method for manufacturing the multilayer belt used in the practice of the present invention is not limited to the above method.

In the present invention, in order to hold lubricant between the belt layers on the surface of each belt hoop of the metal endless belt manufactured by making the interlayer gap between adjacent pellet hoops O in wt terms, the lubricant is retained between the belt layers. The present invention relates to a method for applying unevenness.

A roll transfer method has conventionally been proposed as such a method, but when a thin belt hoop is processed using such a roll transfer method, the effects of the processing may appear on the opposite side of the machined surface, or plastic deformation may occur. However, in the surface processing method according to the present invention, unevenness for oil storage is formed on the surface of the belt hoop by shot blasting. Therefore, the effect of machining appears only on the machined surface, and it does not cause plastic deformation in the direction of the length or give the belt significant bending stress that changes the flatness of the belt. This makes it possible to form fine irregularities suitable for oil storage.

That is, in the present invention, a lubricant belt is produced by applying a shot blasting process in which blasting particles such as sand, glass, hard balls, etc. are sprayed onto either the inner or outer surface of the belt, or both surfaces to give it a matte finish. Promote storage between layers,
#Jm effect is increased, and since this kind of short blasting involves surface compressive stress, the belt life length becomes = J function, and the belt surface becomes satin-like, so the belt surface comrades The coefficient of friction is lowered, and this also has the effect of reducing wear between the belts.

Next, one embodiment of the present invention will be explained. In this example, an endless belt with 10 threads was produced by spinning a beam and then ring-rolling it. The thickness of the endless belt is 0.2m/m, medium 111
m 7m, length 1. On (set to 1m/m).

The thus obtained layered gold+A fM! After the original belt was subjected to solution treatment, it was subjected to the shot blasting process described below. However, aging treatment may be performed instead of solution treatment.

In this example, glass beads were used for shot blasting, and the particle size of the beads in this case was 60 to 80μ.
m, the speed discharge pressure was set in three stages of 2.4.6 kf/cm, and the bead spraying time was changed to 5 to 3 ns. The surface roughness (llmRz) due to the shot blasting process performed in this manner is determined by the bead F? for each bead discharge pressure. If cooking is shown in relation to time, it is 3.
It is a diagram. Here, the white circles are the actual Ill 4i* when the blasting is performed after the solution treatment, and the black circles are the actual Ill 4i* when the blasting is performed after the aging treatment. As is clear from Figure 1, in bead spraying, the surface roughness increases rapidly until the time reaches about 10 seconds, and after that, the surface roughness gradually increases as the time increases. go. It can also be seen that the surface roughness increases significantly as the bead discharge pressure increases.

Figure 4 shows the relationship between the friction coefficient and the roughness of the satin-like surface obtained in this way, and the surface roughness is 2 μmλ! It is recognized that the friction coefficient increases after the lowest state (O2 in the IMP friction coefficient). When the surface roughness is in the range of 1 to 3 μmRz, the friction coefficient is 0.15 or less, and the friction coefficient in this range is satisfactory in terms of wear resistance.

Furthermore, in shot blasting, surface pressure residual stress is imparted by plastic working near the surface, and the relationship between the residual stress in the surface pressure at this time and the fatigue strength of the belt is shown in Section 5114. This is the graph shown in . It is understood that when compressive residual stress exists, the tensile stress under repeated loading is relaxed and reduced, so that the fatigue strength gradually increases as the compressive residual stress increases, as shown in the figure. For example 10
Fatigue 1d break strength in 6 cycles is 100/
It can be seen that the residual stress increases by about 201 ψ/mm under a residual stress of mm.

As described above, the present invention provides a method for forming a fine oil storage unevenness on the surface of each belt hoop of a metal ψν multilayer wire end belt used in a layered manner. This is a surface processing method for a multi-layer endless belt made by Kingen, which is characterized by performing a blasting process to form irregularities with a surface roughness of 1 to 3 μm, so that only the surface of the belt hoop has fine irregularities for oil storage. It is possible to form J1 SO and improves the durability of Peptide.
If the effect of machining appears on the opposite side of the machined part, v13
．． In addition, the friction coefficient between the belt surfaces is reduced due to the fact that the belt surface is satin-finished in the cylinder, and the belt surface is satin-finished. This has improved the durability of the belt, and the fatigue strength of the belt itself has also improved due to the influence of surface residual stress. It is possible.

[Brief explanation of the drawing]

Figure 1 shows that the interlayer gap between adjacent belt hoops is actually 0.
A culm diagram showing an example of a molding culm for a metal carp purchasing end belt, 1.
1sfbl is a side sectional view of the material showing the process of tube spinning used in the same method, lcl is a schematic side view showing the state of ring milling of each intermediate belt, and Idl is a side view showing the state of ring milling of each intermediate belt, and Idl is a side view showing the state of ring milling of each intermediate belt, and Idl is a side view of the material in which the core metal material is inserted into the belt that has been contradicted. Figure 3 is a graph showing the relationship between surface roughness and time for bead blowing in one embodiment of the present invention, and the graph showing the relationship between surface roughness for each discharge pressure in an example of bead blowing. FIG. 5 is a graph showing the relationship between roughness and friction coefficient, and FIG. 5 is a graph showing the relationship between compressive stress and fatigue strength. Applicant: Kobe Seisaku Co., Ltd. Agent, Patent Attorney Takeshi Honjo

Claims (1)

[Scope of Claims] 1. Is it convenient to combine them in the form of 71111? eIl
In the method of forming fine reservoir unevenness on the surface of each belt hoop of a multilayer endless belt manufactured by II, the belt hoop is subjected to shot blasting on one or both sides to form unevenness with a surface roughness of 1 to 3 μmRz. Surface treatment method 02 of a multilayer endless belt made of gold wire, characterized by approximately 2π [ (
1 is the thickness of the belt hoop) A set of metal belt hoops manufactured in such a manner that the circumferential length difference is the same as that of the belt hoop is combined into a multiple ring shape, and a core metal material is inserted into the ring and heated and cooled to form a core metal. According to claim 1, the belt hoops of the belt end belt made of gold 14 are formed so that the adjacent belt hoops are brought into close contact with each other by straightening the belt hoops, and the surface of the belt is polished by shot blasting. Surface treatment method. 3. Metal belt hoops with fine irregularities formed on the surface by shot blasting are put together and the core metal is straightened to make the metal multi-# at end belt 1iLl.
The surface processing method described in claim 1 for manufacturing.