JP3576434B2 - Method and apparatus for measuring circumference of metal band-shaped ring material - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a measuring method and an apparatus for measuring a difference in peripheral length between both peripheral edges of a metal band-shaped ring material.
[0002]
[Prior art]
For example, in a power transmission belt used in a continuously variable transmission, in order to bind together a plurality of elements arranged in an annularly stacked arrangement, a plurality of metal band-shaped ring members are stacked. A ring is used. The strip-shaped ring material constituting this type of laminated ring is subjected to a rolling step of expanding the ring diameter so as to have a predetermined circumferential length, and thereafter, is laminated in a predetermined number through aging and nitriding treatment.
[0003]
However, the strip-shaped ring material may be formed in a tapered shape due to a difference in circumferential length between a peripheral edge on one side and a peripheral edge on the other side when the rolling step is performed. That is, in the rolling step, the diameter of the band-shaped ring material is expanded while a certain tension is applied to the band-shaped ring material by applying the band-shaped ring material over a pair of rollers. At this time, for example, since each roller is supported only at one end of each shaft (so-called cantilever), each shaft receives the stress of the band-shaped ring material, and the other ends of the shafts approach each other. May lean in the direction you want. The strip-shaped ring material supported by the roller whose axis is inclined at the time of rolling is formed in a tapered shape as described above.
[0004]
When the lamination ring is formed, it is difficult to accurately laminate the strip-shaped ring members formed in such a tapered shape due to the difference in the peripheral length of both peripheral edges of each of the strip-shaped ring members. There is a disadvantage that the belt cannot be used for a transmission belt. In addition, the metal material of this type of band-shaped ring material is relatively expensive, and if a band-shaped ring material that cannot be used for a belt for a continuously variable transmission occurs as described above, the cost increases. There is.
[0005]
Therefore, when rolling the band-shaped ring material, it is conceivable to reduce the difference in the circumferential length between the peripheral edges of both sides of the band-shaped ring material by adjusting the inclination of the axis of each roller supporting the band-shaped ring material. Can be However, in order to accurately adjust the inclination of the axis of each roller, it is necessary to accurately determine the difference in the peripheral length between the two peripheral edges of the strip-shaped ring material after rolling. There has been a demand for a method and an apparatus that can easily and accurately measure the difference in peripheral length of the peripheral edge.
[0006]
[Problems to be solved by the invention]
By solving such a disadvantage, the present invention can easily perform a high-accuracy measurement of the circumferential length difference between both peripheral edges of the metal band-shaped ring member, and can improve the band-shaped ring member after the measurement. It is an object of the present invention to provide a method of measuring the circumference of a metal band-shaped ring material and a device therefor, which can be reduced to a practical shape and can be produced at a reduced production cost.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a measuring method for measuring a circumferential length difference between both peripheral edges of a metal band-shaped ring material, wherein the ring material is supported by supporting an inner peripheral surface side of the ring material. The load applied to one peripheral edge of the ring material and the load applied to the other peripheral edge are each measured while applying a tensile load in the direction of expansion, and the load difference applied to the peripheral edges on both sides is measured. The method is characterized in that a difference in peripheral length between both peripheral edges is detected based on the detected peripheral length.
[0008]
According to the present invention, first, while applying a tensile load in the expanding direction of the ring material, a load applied to one peripheral edge of the ring material and a load applied to the other peripheral edge are measured. At this time, if there is no difference in the circumferential length between the peripheral edges on both sides of the ring material, there is no load difference applied to the peripheral edges at the time when the ring material starts to be deformed in the direction of expansion by the tensile load. Therefore, if there is no load difference, there is no difference in the circumferential length between the peripheral edges on both sides, and it can be determined that the ring material is non-defective.
[0009]
On the other hand, if there is a difference in the peripheral length between the peripheral edges on both sides of the ring material, the peripheral edge on the smaller peripheral length begins to deform (stretch) before the peripheral edge on the larger peripheral length. A load difference occurs. The load difference between the peripheral edges on both sides becomes the maximum when the peripheral edges on the side with the smaller peripheral length are elongated and the peripheral lengths on the both peripheral edges become equal. Since the load difference at this time is obtained from the circumferential length difference, by converting this to the circumferential length, the circumferential length difference between the both circumferential edges can be easily and accurately detected.
[0010]
As described above, according to the method of the present invention, it is possible to accurately measure the circumferential length difference between both side peripheral edges of the ring material. Is reflected, the molding accuracy of the ring material can be improved.
[0011]
Further, in the method of the present invention, after detecting a difference in peripheral length between both peripheral edges of the ring material, the ring material is applied to the ring material until the load applied to one peripheral edge becomes equal to the load applied to the other peripheral edge. By applying a tensile load, the shape of the ring material is corrected so that the peripheral lengths of both peripheral edges of the ring material are the same.
[0012]
In the present invention, a tensile load is applied to the ring material in order to measure a load difference between both peripheral edges of the ring material, and the ring material is easily deformed in the expansion direction by applying the tensile load. Can be. Therefore, if there is a circumferential difference between the peripheral edges on both sides of the ring material, the tensile load is further increased while the peripheral lengths of the both peripheral edges are equal when the peripheral length difference between the both peripheral edges of the ring material is detected. Applied to ring material. At the time when the difference in the peripheral lengths of both peripheral edges is detected, there is a load difference even if the peripheral lengths of both peripheral edges are equal. Therefore, if the tensile load is released here, the peripheral lengths of both peripheral edges will not be equal due to springback.
[0013]
Further, by applying a tensile load to the ring material, the entire circumference of the ring material is elongated in a state in which the circumferential lengths of both peripheral edges are equal. At this time, the difference in load applied to the both peripheral edges becomes smaller as the peripheral lengths of the both peripheral edges are elongated. If the load difference is equal, even if the tensile load is released, the state in which the circumferential lengths of both peripheral edges are the same is maintained, and the ring material is corrected to a non-defective product.
[0014]
As described above, according to the present invention, when there is a difference in peripheral length between the peripheral edges on both sides of the ring material, after measuring the peripheral length difference, the ring material is corrected so as to eliminate the peripheral length difference between the both peripheral edges. Therefore, the cost can be reduced by eliminating the waste of the ring material due to the expensive metal material.
[0015]
Further, the present invention is a measuring device for measuring a circumferential length difference between both peripheral edges of a metal band-shaped ring material, wherein a pair of supporting means for supporting the ring material over the same, and a distance between the two supporting means. A load applying means for applying a tensile load to the ring material by expanding the ring material, and a second means provided on one of the support means for measuring the load applied to the peripheral edge of the ring material by contacting the inner peripheral surface of one side peripheral edge of the ring material. 1 load measuring means, second load measuring means arranged in parallel with the first load measuring means, measuring the load applied to the inner peripheral surface of the other side edge of the ring material, and measuring the load applied to the peripheral edge; Peripheral length difference detecting means for detecting a peripheral length difference between both peripheral edges based on the load difference when the difference between the load measured by the load measuring means and the load measured by the second load measuring means is maximum. It is characterized by.
[0016]
According to the present invention, the ring member is supported over the pair of support means, and a tensile load is applied to the ring material by the load applying means. At this time, since the first load measuring means and the second load measuring means are provided on one of the supporting means, the ring member is placed in a state where a tensile load is applied to the ring material by the load applying means. The respective loads applied to both peripheral edges of the material can be measured easily and accurately.
[0017]
Then, when the load difference between the peripheral edges on both sides becomes maximum, the peripheral length difference detecting means detects the peripheral length difference between the peripheral edges on both sides based on the load difference. Thereby, the difference in peripheral length between the peripheral edges on both sides can be quickly measured.
[0018]
Further, in the device of the present invention, the first load measuring means provided on the one supporting means includes a first contact member which contacts an inner peripheral surface of one side peripheral edge of the ring material, and The second load measuring means includes a second abutting member abutting on the inner peripheral surface of the other peripheral edge of the ring material, wherein the first abutting member and the second abutting member are located between both peripheral edges of the ring material. And the other support means is located on the opposite side of the inner peripheral surface of one side edge of the ring material contacting the first contact member. A second contact member which is in contact with the inner peripheral surface of the one peripheral edge, and which is located on the opposite side to the inner peripheral surface of the other peripheral edge of the ring material which is in contact with the second contact member; It is provided with another 2nd contact member which contacts the inner peripheral surface of a side peripheral edge, and the other 1st contact member and another 2nd contact member are both of the said ring material. Characterized in that the inner peripheral surface between the peripheral edge with a gap of non-contact are arranged in the other of the support means.
[0019]
That is, the ring member supported by the pair of support means has one side edge thereof in contact with the first contact member and the other first contact member, and the other side edge thereof in the second contact member. And another second contact member. Further, at this time, between the first contact member and the second contact member and between the other first contact member and the other second contact member, a ring material is formed by the gap. The inner peripheral surface between the both peripheral edges of is not contacted.
[0020]
By doing so, the measured load on one side periphery by the first load measuring means and the measured load on the other side periphery by the second load measuring means are affected by the load applied between the one side periphery and the other side periphery. It is possible to measure the load with extremely high accuracy without receiving the load.
[0021]
Further, in the apparatus of the present invention, a tensile load is applied to the ring material until the measured load by the first load measuring means and the measured load by the second load measuring means become equal, It is characterized by comprising a correcting means for correcting the shape of the ring material so that the circumference is the same.
[0022]
By providing the straightening means, it is possible to extremely easily straighten a ring material having different peripheral lengths on both sides and a defective product in the past, to a non-defective product having the same peripheral length on both sides. . In addition, since the above-described correction can be performed continuously from the measurement of the difference in the peripheral length between the both peripheral edges, the work required for the correction can be eliminated and high work efficiency can be obtained.
[0023]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described with reference to the drawings. 1 is an explanatory view showing a schematic configuration of the present embodiment, FIG. 2 is an explanatory sectional view showing an operation of a part of the present embodiment, and FIG. 3 is an explanatory side view showing a shape of a ring material.
[0024]
As shown in FIG. 1, a first support device 4 and a second support device 5 that support a main body base 2, and a metal band-shaped ring member 3 over the base 2, as shown in FIG. And is constituted by. The first support means 4 includes a slider 8 connected via a screwing member 7 to a ball screw 6 extending along the direction in which the ring member 3 extends. The slider 8 is provided with a first load measuring unit 9 described later and a second load measuring unit 10 arranged in parallel below the first load measuring unit 9.
[0025]
The base 2 is provided with a driving motor 11 for driving the ball screw 6 to rotate. The slider 8 moves the ball screw 6 relative to the second support means 5 in accordance with the driving of the ball screw 6 by the driving motor 11. Move in the direction of approaching / separating. The ball screw 6 and the drive motor 11 are separated from the first support means 4 and the second support means 5 via the slider 8 so as to be stretched over the first support means 4 and the second support means 5. This constitutes a load applying means for applying a tensile load in the direction in which the ring material 3 extends. The ball screw 6 and the drive motor 11 also have a function as a correcting means of the present invention, which will be described later in detail.
[0026]
The first load measuring means 9 includes a first contact block 13 (first contact member) slidable via a rail 12 provided on the slider 8, and the first contact block 13 And a first load cell 14 for measuring a load received from the first load cell 14. As shown in FIG. 2 (a) and FIG. 2 (b), a part of the inner surface of the upper peripheral edge 3a of the ring member 3 is brought into contact with the first contact block 13, as shown in a partially enlarged view. A non-contact gap forming portion 16 is formed between the edge 15 and both peripheral edges 3a, 3b of the ring material 3.
[0027]
As shown in FIG. 1, the second load measuring means 10 is provided below the first contact block 13 and is slidable via a rail 17. 2 contact member) and a second load cell 19 for measuring the load received by the second contact block 18 from the ring member 3. As shown in a partially enlarged view in FIGS. 2A and 2B, the inner surface of the lower peripheral edge 3b of the ring member 3 is brought into contact with the second contact block 18. A non-contacting air gap forming portion 21 between the contact edge 20, both peripheral edges 3 a, 3 b of the ring material 3, and a mounting portion that protrudes from the lower end of the contact edge 20 in the outer peripheral direction and mounts the link material 3. 22 are formed.
[0028]
As shown in FIG. 1, the second support means 5 includes a support shaft 24 erected on a pedestal portion 23 of the base 2 and a first contact roller 25 rotatably supported by the support shaft 24 ( Another first contact member), and a second contact roller 26 (another second contact member) rotatably supported by the support shaft 24 adjacent below the first contact roller 25. It is constituted by.
[0029]
Further, the first contact roller 25 has a non-contact gap between the contact edge 27 contacting the inner surface of the upper peripheral edge 3a of the ring member 3 and both peripheral edges 3a, 3b of the ring member 3. A forming part 28 is formed. Similarly, the second contact roller 26 has a non-contact between a contact edge 29 contacting the inner surface of the lower peripheral edge 3b of the ring member 3 and both peripheral edges 3a, 3b of the ring member 3. A contact gap forming portion 30 is formed.
[0030]
The drive motor 11 for driving the ball screw 6 is controlled by control means (not shown). The control means is connected to the first load cell 14 and the second load cell 19, and can control the drive motor 11 according to the load measured by both load cells 14, 19. Further, the control means detects a circumferential length difference between both side edges 3a and 3b of the ring material 3 based on a difference between a load measured by the first load cell 14 and a load measured by the second load cell 19. It has detection means.
[0031]
Next, a method for measuring the circumference of a ring material using the present embodiment 1 will be described. Although not shown, the ring member 3 is used to integrally bind a plurality of elements in a belt for a continuously variable transmission, and the ring diameter is adjusted so as to have a predetermined circumference in a production line for the ring member 3. An expanding rolling process is performed. As shown in FIG. 3, the ring material 3 formed in the rolling step has a circumferential length difference (a dimensional difference in the circumferential direction) between the upper peripheral edge 3a and the lower peripheral edge 3b, so that the outer shape is tapered. May be done. In FIG. 3, the tapered shape of the ring member 3 is exaggerated more than the actual one for convenience of explanation.
[0032]
The present embodiment apparatus 1 measures the difference in the circumferential length between both side edges 3a and 3b of the tapered ring material 3 and reflects the difference in the rolling process, thereby improving the forming accuracy in the rolling process and measuring. The correction is performed to eliminate the difference in the peripheral length between the both peripheral edges 3a and 3b of the used ring material 3.
[0033]
First, as shown in FIG. 1, the ring material 3 is put over both contact blocks 13 and 18 of the first support means 4 and both contact rollers 25 and 26 of the second support means 5. Then, the ball screw 6 is rotated by the drive of the drive motor 11, and the slider 8 is moved in a direction away from the second support means 5, thereby applying a tensile load in the direction in which the ring member 3 expands. At this time, since the ring member 3 is formed in a tapered shape as described above, the upper peripheral edge 3a having a small peripheral length abuts on the first contact block 13 as shown in FIG. The upper peripheral edge 3a is expanded. Accordingly, a load is applied to the first contact block 13, and the load is measured by the first load cell 14. As shown in FIG. 1, the upper peripheral edge 3 a of the ring member 3 is in contact only with the contact edge 15 of the first contact block 13 and the contact edge 27 of the first contact roller 25. ), The load applied to the upper peripheral edge 3a can be measured very accurately.
[0034]
On the other hand, as shown in FIG. 2A, the lower peripheral edge 3b of the ring member 3 has a larger peripheral length than the upper peripheral edge 3a, and thus has not yet contacted the second contact block 18. The load at this time is measured by the second load cell 19 via the second contact block 18.
[0035]
Thereafter, when the amount of expansion of the upper peripheral edge 3a of the ring member 3 increases due to the movement of the slider 8 shown in FIG. 1, as shown in FIG. 2B, the lower peripheral edge 3b of the ring member 3 becomes the second peripheral member 3b. It contacts the contact block 18. As shown in FIG. 1, the lower peripheral edge 3 b of the ring member 3 is in contact only with the contact edge 20 of the second contact block 18 and the contact edge 29 of the second contact roller 26 (over the bridge). Therefore, the load applied to the lower peripheral edge 3b can be measured with extremely high precision in the same manner as the load applied to the upper peripheral edge 3a.
[0036]
At this time, the difference between the load measured by the first load cell 14 shown in FIG. 1 and the load measured by the second load cell 19 becomes the maximum, and the circumference difference detecting means detects the load at this time. Based on the difference, the circumferential length difference between both side edges 3a, 3b of the ring material 3 is detected. The difference in the perimeter of both sides 3a, 3b of the ring material 3 detected at this time is used for, for example, adjustment of a rolling mill (not shown) in the rolling process, and the ring having no difference in the perimeters on both sides 3a, 3b. This is reflected in the formation of the material 3.
[0037]
At this time, since there is still a load difference between the peripheral edges 3a and 3b on both sides, when the slider 8 is approached and released, the upper peripheral edge 3a having a high load is elastically restored and the peripheral length is reduced and the taper length is reduced. The shape of the shape is not improved. Then, the ball screw 6 is rotated by the drive motor 11 to further separate the slider 8 to apply a tensile load. That is, the ball screw 6 and the drive motor 11 function as the correcting means. Thereby, as shown in FIG. 2B, the ring member 3 is expanded in a state where the both peripheral edges 3a, 3b of the ring member 3 are in contact with both the contact blocks 13, 18. Also at this time, the loads applied to both peripheral edges 3a and 3b are measured by the first load cell 14 and the second load cell 19.
[0038]
Then, as the slider 8 shown in FIG. 1 is separated, the load difference between both side edges 3a and 3b of the ring member 3 gradually becomes smaller. When the slider 8 is further separated, the load applied to both side edges 3a and 3b of the ring member 3 is reduced. Are equal. In this state, since there is no load difference between the both peripheral edges 3a and 3b, when the slider 8 is approached and released, the tapered outer shape is improved, and the peripheral lengths of the both peripheral edges 3a and 3b are the same on the ring material 3. Be corrected.
[0039]
In the present embodiment, the structure in which the first support means 4 is separated from the second support means 5 by the slider 8 to apply a tensile load to the ring member 3 has been described. The supporting member 5 may be configured to be movable and separated from the first supporting member 4 to apply a tensile load to the ring member 3.
[0040]
Further, in the present embodiment, the ball screw 6 and the drive motor 11 are employed as the means for moving the slider 8 as the load applying means and the correcting means. The slider 8 may be moved.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram showing a schematic configuration of an embodiment of the present invention.
FIG. 2 is an explanatory cross-sectional view showing an operation of a part of the present embodiment.
FIG. 3 is an explanatory perspective view showing an outer shape of a ring member.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Perimeter measuring device, 3 ... Ring material, 3a ... Upper periphery (one side periphery), 3b ... Lower periphery (other side periphery), 4 ... 1st support means (one support means), 5 ... 2nd Supporting means (other supporting means), 6: ball screw (load applying means, correcting means) 11: drive motor (load applying means, correcting means), 13: first contact block (first contact member), 14 ... First load cell (first load measuring means), 18 ... second contact block (second contact member), 19 ... second load cell (second load measuring means), 25 ... first contact roller (other First contact member), 26... Second contact roller (another second contact member).

Claims (5)

A measuring method for measuring a difference in peripheral length between both peripheral edges of the metal band-shaped ring material,
While supporting the inner peripheral surface side of the ring material and applying a tensile load in the direction of expansion of the ring material, the load applied to one peripheral edge of the ring material and the load applied to the other peripheral edge are each measured,
A circumferential length measuring method for a metal band-shaped ring material, comprising detecting a circumferential length difference between both side circumferential edges based on the load difference when the load difference applied to both circumferential edges becomes maximum. After detecting the peripheral length difference between both peripheral edges of the ring material, by applying a tensile load to the ring material until the load applied to one peripheral edge of the ring material becomes equal to the load applied to the other peripheral edge, 2. The method according to claim 1, wherein the shape of the ring material is corrected so that the circumferential lengths of both peripheral edges of the ring material are the same. A measuring device for measuring a difference in peripheral length between both peripheral edges of the metal band-shaped ring material,
A pair of support means for supporting the ring material over,
Load applying means for applying a tensile load to the ring material by increasing the distance between the two supporting means,
A first load measuring means provided on one of the supporting means and abutting against an inner peripheral surface of one peripheral edge of the ring material to measure a load applied to the peripheral edge;
A second load measuring unit that is arranged in parallel with the first load measuring unit and abuts against an inner peripheral surface of the other peripheral edge of the ring material to measure a load applied to the peripheral edge;
A circumferential length difference detecting means for detecting a circumferential length difference between both peripheral edges based on the load difference when the difference between the load measured by the first load measuring means and the load measured by the second load measuring means is maximum; An apparatus for measuring the circumference of a metal band-shaped ring material, comprising: The first load measuring means provided on the one support means includes a first contact member that contacts an inner peripheral surface of one side edge of the ring material, and the second load measuring means includes the ring member. A second contact member that contacts an inner peripheral surface of the other peripheral edge of the material;
The first contact member and the second contact member are juxtaposed on an inner peripheral surface between both peripheral edges of the ring material via a non-contact gap,
The other supporting means is provided in contact with the first abutting member, and the other first abutment abutting on the inner peripheral surface of the one peripheral edge located on the opposite side to the inner peripheral surface of the one peripheral edge of the ring material. Another second contact member that includes a member and contacts the inner peripheral surface of the other peripheral edge located on the opposite side to the inner peripheral surface of the other peripheral edge of the ring material that comes into contact with the second contact member. With
The other first abutment member and the other second abutment member are arranged side by side with the other support means via a non-contact gap on an inner peripheral surface between both peripheral edges of the ring material. The apparatus for measuring the circumference of a metal band-shaped ring material according to claim 3, characterized in that: A tensile load is applied to the ring material until the load measured by the first load measuring means and the load measured by the second load measuring means become equal, and the ring members are so urged that the peripheral lengths of both peripheral edges are the same. The apparatus for measuring the circumference of a metal band-shaped ring material according to claim 3 or 4, further comprising a correcting means for correcting the shape of the ring material.

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