JP2003083397A - Method of determining assembling order of elements of endless metallic belt - Google Patents

Abstract

PROBLEM TO BE SOLVED: To manufacture an endless metallic belt with high durability while allowing some degree of dispersion in the accuracy of every single element. SOLUTION: By means of the method of determining assembling order of elements, the assembling order of hundreds of elements for the endless metallic belt is determined. The smaller the difference in widths of adjacent elements, the higher the durability of the belt is obtained. The method includes a step of measuring widths of each element (S102); a step of defining a minimum value of the measured widths as a reference width (S104); a step of calculating the accuracy difference with respect to the reference width (S106); a step of calculating a function representing an isosceles triangle with a height of a maximum value of the accuracy difference (S108); and a step of extracting an element having the accuracy difference closest to a function value relative to assembling numbers and determining the assembling order in the extracting order of the elements (S124).

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an endless metal structure in which a large number of plate-shaped elements are arranged facing each other in an annular shape and each element is annularly bound through a hoop which is a metal band. TECHNICAL FIELD The present invention relates to a belt mounting technique, and more particularly, to a method for determining a mounting sequence of elements in an endless metal belt.

[0002]

2. Description of the Related Art An endless metal belt according to the present invention is used in a belt type continuously variable transmission for automobiles. This belt type continuously variable transmission will be described with reference to FIG. Belt type continuously variable transmission (CVT)
In the ansmission), the endless metal belt 3 includes the input pulley 22 and the output shaft 30 attached to the input shaft 20.
It is used by being wound around the output side pulley 32 attached to the. The input side pulley 22 and the output side pulley 32 are
A pair of sheaves 4 capable of continuously changing the groove width are provided, and by changing the groove width, the winding radius of the endless metal belt 3 around the input side pulley 22 and the output side pulley 32 is changed, whereby the input shaft 20 The rotational speed ratio between the output shaft 30 and the output shaft 30, that is, the gear ratio can be continuously and continuously changed.

Referring to FIG. 13, the endless metal belt 3 is
A large number of elements 1 are arranged side by side in an annular shape in the plate thickness direction, and the elements 1 are bound to the left and right saddle parts through hoops 2 which are annular metal bands, and as a whole, as shown in FIG. The metal belt 3 is constructed.

An example of the shape of the element 1 is shown in FIG. Both side surfaces of the element 1 in the width direction are anti-sheave friction surfaces 6 that come into contact with the tapered sheave surface 5 of the sheave 4, and are tapered surfaces that coincide with the sheave surface 5. A neck portion 8 extending upward in FIG. 15 is formed at the center of the base portion 7 having the anti-sheave friction surface 6 in the width direction, and the neck portion 8 is connected to the top portion 9 that spreads to the left and right. . A slit is formed between the top portion 9 that spreads to the left and right and the base portion 7, and the hoop 2 is passed through the two left and right slit portions. The surface of the base portion 7 with which the hoop 2 contacts is the saddle surface 10.

The height of the saddle surface 10 is represented by the dimension from the pitch line P that traverses the base portion 7. The width of the element 1 is represented by the dimension on the pitch line P. In addition, a dimple hole 11 that is convex on one surface side and concave on the other surface side is formed at an extension position of the neck portion 8 of the top portion 9, and the adjacent element 1
The dimple holes 11 are fitted into each other.

The endless metal belt 3 is used by being sandwiched between a pair of sheaves 4. In this case, since the sheave surface 5 and the anti-sheave friction surface 6 are tapered surfaces, a load is applied to each element in the radial direction by the sandwiching force of the sheave 4, but each element 1 is acted on by the hoop 2. Since they are bound, the outward movement in the radial direction is restricted by the tension of the hoop 2. As a result, a frictional force is generated between the sheave surface 5 and the anti-sheave friction surface 6, or a shearing force of the oil film is generated, and torque is transmitted between the sheave 4 and the endless metal belt 3.

As described above, since the load that presses the element 1 outward in the radial direction is generated by the endless metal belt 3 being sandwiched by the sheave 4, the height of the saddle surface 10, that is, the width direction of the element 1 If there is an error, the outward load in the radial direction will differ greatly, and the radial position will also vary. On the other hand, each element 1 is bound by the hoop 2 and at the same time,
Since the adjacent elements 1 are connected by the dimple holes 11 described above, the error in the width dimension acts as a compressive force or a tensile force directed in the radial direction.

For example, as shown in FIG. 16, when the central element 1 among the three arranged elements 1 is depressed inward in the radial direction due to the deviation of the width dimension, the neck 8 of the central element 1 is formed. Is applied with a tensile force as indicated by an arrow, while a compressive force is applied to the neck portions 8 of the left and right elements 1 as indicated by an arrow.
Alternatively, as shown in FIG. 17, when the central element 1 among the three arranged elements 1 is projected outward in the radial direction due to the deviation of the width dimension, the neck portion 8 of the central element 1 is , A compressive force acts as indicated by the arrow, whereas a tensile force acts on the neck portions 8 of the left and right elements 1 as indicated by the arrow.

As described above, a compression force or a pulling force acts on each element 1 due to an error or deviation of the dimension of each element 1, and the tension of the hoop 2 fluctuates accordingly. Then, when the endless metal belt 3 is run, such a complicated load is repeatedly generated, which causes abnormality such as deformation of the element 1 and the hoop 2, and the durability thereof may be reduced.

Therefore, in order to control the quality of the endless metal belt 3, it is necessary to judge whether the quality characteristics relating to durability are good or bad. Generally, this is done by extracting a sample for each production lot of the endless metal belt and conducting a quality inspection. It was done by doing. That is, the extracted belt is disassembled, and all elements are subjected to three-dimensional measurement of shape accuracy listed as inspection items or measurement with a dedicated gauge, and based on the measurement results, the production lot of the belt is checked. The quality of the population was judged.

Further, Japanese Patent Laid-Open No. 2001-146943 discloses a method for manufacturing an endless metal belt for a continuously variable transmission. The manufacturing method disclosed in this publication is a method of manufacturing an endless metal belt in a good assembled state by eliminating defects of elements and hoops in advance. This manufacturing method consists of an element inspection step that inspects the molding state of the element at the end of the element manufacturing line, a step of sending only the elements judged to be non-defective in the element inspection step to the belt assembly line, and the end of the hoop assembly line. , A hoop inspection step for inspecting the stacking state of the hoops, a step for sending only hoops judged to be non-defective products to the belt assembly line in the hoop inspection step, and an endless metal belt for assembling a plurality of elements and hoops on the belt assembly line And manufacturing.

According to the manufacturing method disclosed in this publication,
In the element inspection step, only the elements whose molding state is judged to be good are sent to the belt assembly line. For example, in this element inspection step, by controlling the accuracy of the element in the width direction, it is possible to manufacture the endless metal belt using only the element having a good single-piece accuracy.

[0013]

The element in the above-mentioned endless metal belt is generally used after being punched by a fine blanking die and then heat-treated, and therefore, the accuracy of the shape or dimension produced in the manufacturing process thereof is used. It has a variation of. Also,
Hundreds of elements are used for one endless metal belt, and these elements are not the same fine blanking type or the same heat treatment step, but a mixture of different steps. Further, according to the findings of the inventors of the present invention, in the endurance of the endless metal belt, not only the dimensional accuracy of each element as described above, but also the dimensional deviation with adjacent elements, especially the deviation of the width dimension It has a great influence.

Under such circumstances, even if the manufacturing method disclosed in the above-mentioned publication is applied, if the single-piece accuracy distribution in the width direction of the element is wide, the single-piece accuracy is poor and the element cannot be used. Occurs and the yield is deteriorated. Further, depending on the manufacturing method disclosed in the above-mentioned publication, it is not possible to consider that the mixing method or the arranging method of the elements different in the manufacturing process is reflected and the durability thereof is affected.

The present invention has been made to solve the above-mentioned problems, and an object thereof is to obtain an endless metal belt having good durability while allowing a certain degree of variation in accuracy of individual elements. Is to provide a method for determining the assembly order of elements.

[0016]

According to a first aspect of the present invention, there is provided an element assembling order determining method, wherein a plurality of elements having both widthwise side surfaces contacting a sheave surface are arranged in the plate thickness direction and passed through an annular hoop. This is a method of determining the assembly order of the elements in the endless metal belt constituted by the above. The element assembling order determination method includes a measuring step of measuring the dimensions of a plurality of elements, a storing step of storing the dimension of the element measured in the measuring step, and a dimension of the element stored in the storing step. With the smallest dimension as the reference dimension, the calculation step of calculating the accuracy difference from the reference dimension for each element, and the accuracy difference with respect to the assembly number indicating the order of assembling the elements follow the predetermined function. And a determining step of determining an assembling order.

According to the first aspect of the present invention, the dimensions of the elements are measured and stored for several hundred elements constituting the endless metal belt. The smallest dimension among those elements is used as the reference dimension, and the accuracy difference from the reference dimension is calculated for each element. A function that inputs an assembling number indicating the order of assembling the elements and outputs the difference in precision with respect to the order is determined in advance. This function is, for example, a sine function having a start point of 0 (rad) and an end point of π (rad). The order of assembling the elements is determined so as to follow this sine function. As a result, the assembling order of elements is determined according to the sine function. The sine function has the same value at the start point (0 (rad)) and the end point (π (rad)), increases gradually up to π / 2 (rad), and gradually increases from π / 2 (rad). It is a decreasing function. By determining the assembly order of the elements so as to follow such a function, the accuracy difference in the element dimensions gradually increases until the half of the assembly order has passed, and after the half has passed, It is arranged in the direction of gradual decrease. As a result, the difference in size between adjacent elements can be made extremely small. As described above, in the endless metal belt, the dimensional difference such as the width difference between the adjacent elements affects the durability. Therefore, in order to improve the durability, it is conceivable to measure the width of the element or the height of the saddle surface and send only the measured dimension that meets the standard to the belt assembly line. However, if the accuracy distribution of a single element is wide, some elements cannot be used and the yield is deteriorated. On the other hand, if the endless metal belt is manufactured by determining the assembly order of the elements as described above, it is possible to make the difference between the dimensions of the adjacent elements extremely small even if the accuracy variations of the individual elements are allowed to some extent. Thus, an endless metal belt having good durability can be obtained.

In the element assembling order determining method according to the second aspect of the present invention, the function is a function in which an independent variable is an assembly number and a dependent variable is an accuracy difference from a reference dimension.
Further, this function is a function in which the value of the start point and the value of the end point match. The differential value of this function is less than or equal to a predetermined value.

According to the second aspect of the invention, the function is a function (for example, a periodic function) in which the values of the start point and the end point coincide with each other by repeating a gradual rise and a gradual fall. By determining the assembling order of the elements according to such a function, the accuracy difference between the adjacent elements can be made extremely small.

In the element assembling order determining method according to the third aspect of the present invention, the function is such that the starting point value and the ending point value match, the derivative value of the function is less than or equal to a predetermined value, and the inflection point. Is a function.

According to the third aspect of the present invention, the value of the starting point and the ending point are the same, the differential value of the function is less than or equal to a predetermined value, and there is one inflection point (for example, 0 (rad). According to the sine function from .pi. To .pi.

In the element assembling order determining method according to the fourth aspect of the present invention, the function is a function determined so that the difference in size between adjacent elements is small.

According to the fourth aspect of the invention, by determining the assembling order of the elements according to such a function, it is possible to make the dimensional difference between the elements adjacent to each other extremely small.

In the element assembling order determining method according to the fifth aspect of the present invention, the function determines the maximum value of the precision difference as its height,
This is a function that represents an isosceles triangle whose base is the number of impositions.

According to the fifth aspect of the invention, the endless metal belt has an endless metal belt, so that the precision difference uniformly increases toward the apex of the isosceles triangle until half of the hundreds of elements constituting the endless metal belt have passed. After half of the hundreds of elements that make up the metal belt have passed, the assembly order of the elements is determined so that the difference in accuracy is uniformly reduced from the vertices of the isosceles triangle. As a result, the difference in size between adjacent elements can be made extremely small.

In the element assembling order determining method according to the sixth aspect of the present invention, the function determines the maximum value of the accuracy difference as its amplitude,
This is a function that represents a sine waveform in which the number of installations is ½ of the cycle.

According to the sixth aspect of the invention, the sine function gradually increases in accordance with the function value of 0 (rad) to π / 2 (rad) until the number of half of several hundred elements constituting the endless metal belt passes. Thus, when half of several hundreds of elements have passed, from sine function π / 2 (rad) to π
As it decreases gradually according to the function value of (rad),
The assembly order of the elements is determined. As a result, the difference in size between adjacent elements can be made extremely small.

According to a seventh aspect of the present invention, there is provided an element assembling order determining method, wherein elements are rearranged in descending or ascending order based on the dimension measured in the measuring step and the dimension measured in the measuring step. , A rearrangement step of giving an identification number for identifying the elements according to the rearranged order, an element group with an even identification number and an element group with an odd identification number according to the identification numbers arranged in the rearrangement step And a determination step of determining one of the element groups in ascending order of dimensions and the other in descending order of dimensions to determine the assembly order of the elements.

According to the seventh invention, the dimensions of hundreds of elements constituting the endless metal belt are measured. Based on the measured dimensions, the elements are sorted in ascending order of dimension, and in the sorted order (ie, the smallest dimension first).
Is given an identification number for identifying the element. The element group is divided into two depending on whether the identification number is an even number or an odd number. For example, the assembling order of the elements is determined in ascending order of the size of the even group and in descending order of the size of the odd group. As a result, when the elements are assembled according to the determined assembly order, the elements are arranged in ascending order of the dimension from the first of the assembly order to half the hundreds of elements constituting the endless metal belt. After half the number of hundreds of elements, the elements are arranged and assembled in descending order of the element size. As a result, the difference in size between adjacent elements can be made extremely small.

[0030]

BEST MODE FOR CARRYING OUT THE INVENTION The present embodiment will be described below with reference to the drawings. In the following description, the same parts are designated by the same reference numerals. Their names and functions are also the same. Therefore, detailed description thereof will not be repeated.

<First Embodiment> FIG. 1 shows the external appearance of a computer system which is an example of an apparatus for executing a process for determining the assembly order of the elements 1 of an endless metal belt 3.
Referring to FIG. 1, the computer system 100 includes
FD (Flexible Disk) drive device 106 and CD-R
OM (Compact Disc-Read Only Memory) drive device 10
8 includes a computer 102, a monitor 104, a keyboard 110, and a mouse 112.

FIG. 2 shows the computer system 100.
The configuration is shown in block diagram form. As shown in FIG. 2, the computer 102 includes a CPU (Central Processing Unit) 120 connected to each other via a bus in addition to the FD drive device 106 and the CD-ROM drive device 108 described above.
A memory 122 and a fixed disk 124. F
The FD 116 is set in the D drive device 106. CD
A CD-ROM 118 is set in the ROM drive device 108.

The element assembling order determination process according to the present invention is realized by computer hardware and software executed by the CPU 120. Generally, such software is FD116, CD-ROM1.
It is stored in a recording medium such as 18 and distributed, and is read from the recording medium by the FD driving device 106 or the CD-ROM driving device 108 and is temporarily stored in the fixed disk 124. Further, it is read from the fixed disk 124 to the memory 122 and executed by the CPU 120. The hardware itself of the computer shown in FIGS. 1 and 2 is general. Therefore, the characteristic part of the present invention is
FD 116, CD-ROM 118, fixed disk 124
Is an assembling order determination process realized by software stored in the recording medium.

Since the operation of the computer itself shown in FIGS. 1 and 2 is well known, its detailed description will not be repeated here.

Referring to FIG. 3, the assembling order determination process of the elements 1 of the endless metal belt 3 has the following control structure.

Step (hereinafter, step is abbreviated as S)
At 100, the CPU 120 detects that the element 1 used for one endless metal belt 3 is selected.
In this detection, the user selects N elements 1 and
This is performed by inputting the number N of elements using the keyboard 110 or the mouse 112. In S102, CPU 120 stores the width measured for each element 1 in association with the element ID (Identification). At this time, in measuring the element width itself, the width of the element 1 may be measured by a measuring system different from the computer system 100 and input by the user using the keyboard 110.
00 and the element width measuring device may be connected online, and the width of each element 1 may be continued by the measuring device according to an instruction from the CPU 120.

At S104, CPU 120 calculates the minimum value of the measured widths as the reference width. In S106,
The CPU 120 calculates and stores a difference from the reference width for each element ID.

At S108, CPU 120 calculates a function representing an isosceles triangle whose height is the maximum precision difference. The length of the base of the isosceles triangle at this time corresponds to the number of assembling. In S110, CPU 120 divides the function representing the isosceles triangle by the number of elements N.

At S112, CPU 120 initializes variable M (M = 1). In S114, the CPU 120
A function value (= accuracy difference (M)) corresponding to the divided element (M) is calculated. A function representing the isosceles triangle calculated at this time is used. In S116, the CPU 120
Extracts the element having the accuracy difference closest to the function value (= accuracy difference (M)) from the candidate list. When M is an initial value (M = 1), N elements are registered in the candidate list.

At S118, CPU 120 deletes the element ID of the extracted element from the candidate list.
In S120, CPU 120 adds 1 to variable M. In S122, CPU 120 determines whether variable M is larger than the number N of elements. If the variable M is larger than the number N of elements (YE at S122)
S), the process proceeds to S124. If not (NO in S122), the process is returned to S114, and the extraction of elements is repeated by the number of elements 1 used for the endless metal belt 3 according to the function representing the isosceles triangle.

At S124, CPU 120 determines the order of the elements 1 arranged according to the function as the assembling order. The contents determined in the assembling order are the monitor 10
4 is output. At this time, the adjacent element 1
The width difference is displayed.

An element assembling order determining operation based on the above structure and flowchart will be described.

Element 1 used for endless metal belt 3
Is selected (S100), the width of each element is measured, and the measured width is stored in association with the element ID (S102). The minimum value of the measured width is calculated as the reference width (S104), and the accuracy difference from the reference width is calculated and stored for each element (S106). A function representing an isosceles triangle whose height is the maximum precision difference is calculated (S108), and the function representing an isosceles triangle is divided by the number N of elements (S110).

The function value is calculated for each of the divided elements 1 (S114), and the element 1 having the closest difference to the function value is extracted from the candidate list (S116). The element ID of the extracted element 1 is deleted from the candidate list (S118). Such an operation is repeated from the first element to the Nth element. When such an operation is performed up to the Nth element, the order of the elements arranged according to the function is determined as the assembling order (S124).

After the element assembling order determining operation is performed in this manner, the monitor 104 displays the element assembling example shown in FIGS. 4 and 5 and the difference in width between adjacent elements 1. As shown in FIG. 4, as the assembly number increases until 1/2 of the element number N passes, the assembly number increases when 1/2 of the element number N increases so that the accuracy difference of the elements increases. Are arranged so that the precision difference of the elements becomes smaller as becomes larger. As a result, as shown in FIG. 5, the difference in width between adjacent elements is extremely small. The vertical axes shown in FIGS. 4 and 5 represent the dimension difference of the element width accuracy.

For comparison, FIGS. 6 and 7 show an example of element assembly and a difference in width of the element 1 when the same N elements are randomly assembled. Figure 6
And, as shown in FIG. 7, when the same N elements are randomly assembled, an extremely large difference in width occurs between the adjacent elements 1.

As described above, according to the element assembling order determination method for the endless metal belt according to the present embodiment, the arrangement order of the elements is devised while allowing a certain degree of variation in the width accuracy of the elements. Due to
The difference in width between adjacent elements can be reduced. By reducing the difference in width between adjacent elements, it is possible to improve the durability of the endless metal belt composed of a large number of elements.

<Modification of First Embodiment> As shown in FIG. 8, the assembly order determining method according to this modification has a control structure different from that of the flowchart shown in FIG. Other hardware configurations and the like are the same as those of the first embodiment described above, and therefore detailed description thereof will not be repeated here.

Referring to FIG. 8, in S150, CPU1
20 detects that N elements 1 to be used for one endless metal belt 3 are selected. In S152, CPU 120 measures the width of each element 1 and stores it in association with the element ID.

At S154, CPU 120 rearranges the element IDs in the ascending order of the measured widths. In S156, the CPU 120 sets the rearranged element IDs in order.
Assign an element identification number. In S158, CPU
The element 120 divides the element ID into an element group having an even element identification number and an element group having an odd element identification number.

At S160, CPU 120 arranges the element IDs in ascending width order for the element groups having even element identification numbers. In S162, CPU 120 arranges the element IDs in descending order of width for the element group having an odd element identification number. The odd-numbered element groups may be arranged in the ascending order of the width, and the even-numbered element groups may be arranged in the descending order of the width. In S164, CPU 120 determines the order of arranged elements 1 as the assembling order. At this time, the order is determined such that the width of the last element 1 of the element group having an even element identification number and the width of the first element 1 of the element group having an odd element identification number are continuous.

According to this modification, all the elements constituting the endless metal belt 3 are arranged in the ascending order of the measured width. Element identification numbers are assigned to the arranged elements 1 (S156), and element IDs having even element identification numbers are arranged in ascending order of width, and element groups having odd element identification numbers are arranged in descending order of width (( S160, S162). The order of the arranged elements 1 is determined as the assembling order (S164).

As a result, as shown in FIG. 4 shown in the first embodiment, the difference in the element width accuracy increases uniformly until the half of the elements forming the endless metal belt has passed. Thus, after half the time, the elements are arranged such that the difference in precision of the element widths is uniformly reduced.

<Second Embodiment> In the element assembling order determination processing according to the second embodiment of the present invention, the function in the first embodiment described above becomes a sine function. Other hardware configurations are the same as those in the first
Is the same as the embodiment. Therefore, detailed description thereof will not be repeated here. Further, in the processing in FIG. 9 shown below, the same processing as the processing in FIG. 3 described above is given the same step numbers. The processing is the same. Therefore, detailed description thereof will not be repeated here.

Referring to FIG. 9, the accuracy difference from the reference width is calculated and stored for each element ID, and then in S200, C
PU120 calculates the function showing the sine waveform which makes amplitude the maximum value of a precision difference. The cycle of the sine waveform at this time corresponds to half the number of installations. In S202, C
PU 120 divides the function representing the sine waveform by the number of elements N.

Thereafter, the function value corresponding to the divided elements is calculated until the number of elements N used for one endless metal belt 3 is satisfied, and the element 1 having the closest accuracy difference to the function value is extracted. To be done.

When the extraction for all the elements 1 is completed, in S124, the CPU 120 determines the order of the elements 1 arranged according to the function as the assembling order. At this time, as shown in FIG. 10 and FIG.
The element assembly example and the difference in width between adjacent elements 1 are displayed on the monitor 104.

As shown in FIGS. 10 and 11, the assembly order determining method according to the present embodiment also allows a certain accuracy difference in the width of the elements, while making the difference in the width of the adjacent elements extremely small. can do. As a result, the endurance of the endless metal belt composed of many elements can be improved.

The embodiments disclosed this time are to be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above description but by the claims, and is intended to include meanings equivalent to the claims and all modifications within the scope.

[Brief description of drawings]

FIG. 1 is an external view of a computer system that executes element assembly order determination processing according to an embodiment of the present invention.

FIG. 2 is a control block diagram of the computer system shown in FIG.

FIG. 3 is a flowchart showing a control procedure of an element assembling order determination process according to the first embodiment of the present invention.

FIG. 4 is a diagram showing an example of element assembling by an element assembling order determination process according to the first embodiment of the present invention.

FIG. 5 is a diagram showing a difference in width between adjacent elements in an element assembling example by the element assembling order determination processing according to the first embodiment of the present invention.

FIG. 6 is a diagram illustrating a comparative example of element assembly.

FIG. 7 is a diagram showing a difference in width between adjacent elements in a comparative example of element assembly.

FIG. 8 is a flowchart showing a control procedure of element assembly order determination processing according to a modification of the first exemplary embodiment of the present invention.

FIG. 9 is a flowchart showing a control procedure of element assembly order determination processing according to the second embodiment of the present invention.

FIG. 10 is a diagram showing an example of element assembling by an element assembling order determination process according to the second embodiment of the present invention.

FIG. 11 is a diagram showing a difference in width between adjacent elements in an element assembling example by the element assembling order determination processing according to the second embodiment of the present invention.

FIG. 12 is a sectional view of a belt type continuously variable transmission in which an endless metal belt is used.

FIG. 13 is a partial perspective view illustrating an endless metal belt.

FIG. 14 is a perspective view showing the overall structure of an endless metal belt.

FIG. 15 is a front view of the element.

FIG. 16 is a diagram (No. 1) showing a state where a load is generated when the adjacent difference in element width exceeds the standard.

FIG. 17 is a diagram (No. 2) showing a load generation state when the adjacent difference in element width exceeds the standard.

[Explanation of symbols]

1 element, 2 hoops, 3 endless metal belts, 4
Sheave, 5 sheave surface, 6-to-sieve friction surface, 10
Saddle surface, 20 input shaft, 22 input side pulley, 30
Output shaft, 32 Output side pulley, 100 Computer system, 102 Computer, 104 Monitor, 106
FD drive device, 108 CD-ROM drive device, 11
0 keyboard, 112 mouse.

Claims (7)

[Claims] 1. A method for determining the order of assembling elements in an endless metal belt constituted by arranging a plurality of elements whose widthwise side surfaces are in contact with a sheave surface side by side in a plate thickness direction and passing through an annular hoop. A measurement step of measuring the dimensions of a plurality of the elements, a storage step of storing the dimensions of the element measured in the measurement step, and a minimum of the dimensions of the elements stored in the storage step. As a reference dimension, a calculation step of calculating an accuracy difference with the reference dimension for each of the elements, and an accuracy difference with respect to an assembly number representing the order of assembling the elements, according to a predetermined function, A step of determining the order of assembling the elements, and a method of determining the order of assembling the elements of the endless metal belt. 2. The function is a function in which an independent variable is an assembly number and a dependent variable is an accuracy difference from a reference dimension, and a start point value and an end point value are the same, and a differential value of the function. The method for determining the order of assembling elements of an endless metal belt according to claim 1, wherein is a function that is equal to or less than a predetermined value. 3. The function is a function in which an independent variable is an assembly number and a dependent variable is an accuracy difference from a reference dimension, and a start point value and an end point value match each other, and a differential value of the function. Is less than or equal to a predetermined value, and is a function having one inflection point. 4. The function is a function in which an independent variable is an assembly number and a dependent variable is an accuracy difference from a reference dimension, and is defined so that a difference in dimension between the elements adjacent to each other is small. The method for determining an element assembly sequence of an endless metal belt according to claim 1, which is a function. 5. The function is a function in which an independent variable is an assembly number and a dependent variable is an accuracy difference from a reference dimension, and the maximum value of the accuracy difference is its height, and the number of installations is its base. The method for determining the order of assembling an element of an endless metal belt according to claim 1, which is a function representing an isosceles triangle. 6. The function is a function in which an independent variable is an assembly number, and a dependent variable is an accuracy difference from a reference dimension, and the maximum value of the accuracy difference is its amplitude and the number of installations is its cycle. The method for determining an element assembling order of an endless metal belt according to claim 1, which is a function representing a sine waveform that is halved. 7. A method for deciding an assembling order of elements in an endless metal belt constituted by arranging a plurality of elements, whose both side surfaces in the width direction are in contact with a sheave surface, in the plate thickness direction and passing through an annular hoop. In the measurement step of measuring the dimensions of the element, based on the dimensions measured in the measuring step, the elements are rearranged in descending or ascending order of the dimensions,
A rearrangement step of giving an identification number for identifying the elements according to the rearranged order, according to the identification numbers arranged in the rearrangement step, the identification number is an even number element group, and the identification number is an odd number element group And a determination step of determining one of the element groups in an ascending order of dimensions and the other in a descending order of dimensions, the order of assembling the elements, a method for determining an element assembly order of an endless metal belt. .