JP3749082B2 - Method and apparatus for measuring belt element for continuously variable transmission - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a measuring method and apparatus for measuring the plate thickness and flatness of an element of a continuously variable transmission belt.
[0002]
[Prior art]
The continuously variable transmission belt is configured such that a plurality of elements punched from a metal plate are stacked in an annular shape, and are assembled to an endless ring so that the elements do not come apart from each other. An element constituting a belt for a continuously variable transmission of this type includes a body having both end edges that form a V surface that contacts a pulley of the continuously variable transmission, and a head that is connected to the body via a neck. ing.
[0003]
By the way, the element punched out from the metal plate material has a variation in the plate thickness of each part of the element or a flatness is lowered due to deformation such as bending or twisting. Such elements having defects in plate thickness and flatness do not come into close contact with each other when they are laminated in an annular shape, making it difficult to assemble them into the ring in the assembly process of the continuously variable transmission belt. Further, even if assembled to the ring, there is a possibility that the quality may be deteriorated such that the spacing between the elements varies and the driving force transmission efficiency between the pulleys by the continuously variable transmission belt decreases.
[0004]
Therefore, conventionally, prior to assembling the continuously variable transmission belt, an operator manually measures the plate thickness of each part of the element using a micrometer, and visually inspects the flatness of each element by the operator. Thus, the quality of each element is determined.
[0005]
However, in measuring the thickness of the element manually by the operator, the thickness of the element must be measured one by one for a plurality of locations of the body and head of the element. There is a risk that a certain measurement accuracy cannot be obtained. In addition, in the inspection of the flatness of the element by the operator's visual observation, there is a possibility that the deformed element is sometimes overlooked. Therefore, there is an inconvenience that it is difficult to maintain the quality of the continuously variable transmission belt in a good or bad judgment of each element by visual inspection or manual work of the operator.
[0006]
[Problems to be solved by the invention]
The present invention eliminates such inconvenience, and the present invention can efficiently and accurately measure the plate thickness and flatness of the element, and can maintain the quality of the belt for continuously variable transmission favorably. And an apparatus for the same.
[0007]
[Means for Solving the Problems]
In order to achieve this object, in the method of the present invention, first, the elements of the continuously variable transmission belt are positioned so as to be movable up and down so that both surfaces thereof are directed in the vertical direction. Next, a plurality of first displacement sensors are brought into contact with the lower surfaces of a plurality of measurement locations preset on the body and head of the positioned element. Subsequently, a plurality of second displacement sensors facing above the first displacement sensors are brought into contact with the body of the positioned element and the upper surface of the head.
[0008]
And based on the displacement amount obtained from each displacement sensor, the plate | board thickness of each measurement location is measured. Further, when measuring the plate thickness of each measurement location, each measurement location of the element is provided in the vicinity of both ends forming the V surface of the body of the element, in the center between both ends, and at both ends of the head. The center point of the pair of upper and lower first and second displacement sensors at the measurement point near the one side edge of the body and the pair of upper and lower first and second points at the measurement point near the other side edge of the body. The flatness of the element is measured based on a vertical displacement difference obtained from each displacement sensor at each measurement location with respect to the reference line, using a straight line passing through two locations with the center point of the two-displacement sensor as a reference.
[0009]
According to the method of the present invention, the element is sandwiched from above and below by the plurality of first displacement sensors and the plurality of second displacement sensors in a positioned state. Each of the first displacement sensors and each of the second displacement sensors are in contact with the element while facing each other in the vertical direction through the measurement points set on the body and the head of the element. Thereby, the displacement amount in the advance position of the 1st displacement sensor and the 2nd displacement sensor in each measurement location of an element can be obtained. And the board | substrate thickness of each measurement location of an element can be correctly measured by obtaining the displacement amount in the 1st displacement sensor and 2nd displacement sensor in each measurement location of an element, and an advance position. As a result, compared to the case where an operator measures the thickness of each measurement location using a micrometer, the thickness of a plurality of locations can be measured at once, and the accuracy is high based on the amount of displacement obtained from each displacement sensor. The plate thickness can be measured quickly.
[0010]
Further, in the present invention, among the measurement points, a pair of upper and lower pairs at the measurement point near the one side edge of the body and at the measurement point near the other side edge of the body and the center point of the pair of upper and lower first and second displacement sensors. Since the vertical displacement difference obtained from the advance position of each displacement sensor at each measurement location relative to the reference line is obtained with reference to a straight line passing through two locations with the center point of the first and second displacement sensors, the element Even if there is deformation such as bending or twisting, the flatness of the element can be easily measured from the variation in the displacement difference of each measurement point obtained at this time. Compared with this, the flatness can be measured accurately and efficiently.
[0012]
Further, the element may be curved in an arc shape on both sides of the element or bend on one side of the body or the head. Further, since the neck is twisted, the head and the body may be inclined in a direction intersecting with each other. In any of these cases, a pair of upper and lower first and second first and second displacement sensors at the central point of the pair of upper and lower first and second displacement sensors at the measurement point near the one side edge of the body and at the measurement point near the other side edge of the body. By using a straight line passing through two locations with the center point of the second displacement sensor as a reference line, a displacement difference between each measurement location with respect to the reference line is clearly generated. Thereby, the flatness of an element can be reliably measured from the variation of the displacement difference of each measurement location.
[0013]
Further, in the apparatus of the present invention includes a positioning portion for vertically movably positioning said element in position in which the both surfaces are directed in the vertical direction, a plurality of preset measurement body and the head of the element that is positioned on the positioning unit A plurality of first displacement sensors that are disposed below the positioning portion corresponding to the location and are in contact with the lower surface of the element to support the element ; and each first displacement sensor provided in the positioning portion. A pair of restricting walls for restricting lateral movement of the element in contact with substantially lower half portions in the plate thickness direction of both end edges forming the V surface of the body of the element placed thereon, and each first displacement sensor The element is positioned so as to be movable up and down in opposition to the body and the upper surface of the head positioned at the positioning portion in the lowered position, and the element is sandwiched between each first displacement sensor. A plurality of second displacement sensor for the state, and a lifting means for lifting integrally each second displacement sensor.
[0014]
Furthermore, the device of the present invention is obtained from each displacement sensor when the element is held between each second displacement sensor and each first displacement sensor by lowering each second displacement sensor by the elevating means. and the plate thickness measuring means for measuring the thickness of the respective measuring points of the element based on the amount of displacement is, the predetermined two positions of the respective measuring points to calculate the reference line as a reference, for each measurement point relative to the reference line Flatness measuring means for measuring the flatness of the element based on a vertical displacement difference obtained from each displacement sensor .
[0015]
According to the apparatus of the present invention, first, an element is placed on the plurality of first displacement sensors of the positioning unit. As a result, the element is positioned by the positioning portion, and each first displacement sensor is accurately brought into contact with a plurality of measurement points preset on the body and head of the element from below. Next, each of the second displacement sensors is lowered by the elevating means and is brought into contact with the element supported on the first displacement sensor from above. At this time, since the element is positioned by the positioning portion, each second displacement sensor abuts accurately on a plurality of measurement locations preset on the body and head of the element. Thereby, an element is clamped between each 2nd displacement sensor and each 1st displacement sensor.
[0016]
Since the plate thickness measuring means can measure the plate thickness at each measurement location of the element at a time from the displacement obtained from each first displacement sensor and each second displacement sensor, manual operation using a micrometer is possible. Compared to, it is possible to quickly measure the plate thickness at a plurality of locations.
[0017]
Further, the flatness measurement means calculates a reference line based on two predetermined positions among the measurement points, and based on a vertical displacement difference obtained from each displacement sensor at each measurement point with respect to the reference line. The flatness of the element is measured.
[0018]
As described above, since the element can be accurately clamped between each first displacement sensor and each second displacement sensor simply by positioning the element on the positioning portion, not only the plate thickness but also the flatness can be easily obtained. It is possible to measure, and the quality of the element can be determined with high accuracy and efficiency as compared with the visual observation of the operator.
[0020]
In addition, since the positioning portion includes the restriction wall, the element of the positioning portion is reliably positioned by both restriction walls and positioned with a small contact portion with both restriction walls. The influence of the quantity on the measurement is extremely small, and a highly accurate measurement value can be obtained from each displacement sensor. Furthermore, since both the regulating walls are in contact with substantially lower half portions in the plate thickness direction of both end edges forming the V surface of the body of the element placed on each first displacement sensor, the second displacement sensor When the element is lowered and the element is pushed down, interference between the second displacement sensor and the restriction wall can be prevented, and high-precision flatness and plate thickness can be measured.
[0021]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described with reference to the drawings. 1 and 2 are explanatory side views showing a part of the measuring apparatus according to the present embodiment in a longitudinal sectional view, FIG. 3 is an explanatory plan view of a positioning portion, and FIG. 4 is an operation explanatory view showing an enlarged main portion. 5 is an explanatory view schematically showing the displacement of each displacement sensor with respect to each deformation state of the element, FIG. 6 is an explanatory perspective view showing a part of a continuously variable transmission belt, and FIG. 7 shows the shape of the element. It is explanatory drawing.
[0022]
The measuring device 1 of this embodiment shown in FIGS. 1 and 2 measures the flatness and thickness of the element 2. As shown in part in FIG. 6, the element 2 is laminated in a plurality of layers and arranged in an annular shape, and is integrally bound by a laminated ring 3 formed by laminating a plurality of metal plate-like rings. The belt 4 is formed. As shown in FIG. 7, the element 2 is formed by punching a metal plate material, and includes a body 5 and a head 7 connected to the body 5 through a neck 6. Both end edges 8 and 9 of the body 5 form a V surface that contacts a pulley of a continuously variable transmission (not shown). Further, a dimple 10 protruding to one side and a concave hole 11 corresponding to the dimple 10 are formed at the center of the head 7.
[0023]
Next, the configuration of the measuring apparatus 1 of the present embodiment will be described. As shown in FIG. 1, the apparatus 1 includes a base 13 having an inclined portion 12 on one side wall, a fixed portion 14 fixed to the inclined portion 12 of the base 13, and an inclined portion 12 of the base 13. And a movable portion 15 which is moved up and down along.
[0024]
The fixing portion 14 is provided with a positioning portion 16 that positions the element 2 in a posture in which both surfaces thereof are directed in the vertical direction. Five first displacement sensors 17a to 17e (first displacement sensors 17c and 17e are shown in FIGS. 1 and 2) are supported by support members 18 and 19 below the positioning portion 16. .
[0025]
As shown in FIG. 3, the positioning portion 16 includes a pair of restriction blocks 20 and 21 for restricting the element 2 from both sides. On both side surfaces of the restricting blocks 20 and 21 facing each other, restricting walls 22 and 23 that are inclined in directions approaching each other along both side edges 8 and 9 of the body 5 of the element 2 are formed. As a result, when the element 2 is inserted into the positioning portion 16, the element 2 is stopped at a predetermined position simply by sliding the side edges 8 and 9 of the body 5 of the element 2 against the regulating walls 22 and 23. Positioning can be performed easily. Further, as shown in FIG. 4A, the restriction walls 22 and 23 of the restriction blocks 20 and 21 come into contact with substantially lower half portions of both side edges 8 and 9 of the body 5 of the element 2. ing. Accordingly, in the positioning portion 16, the substantially upper half of the element 2 protrudes above the restriction blocks 20 and 21. In addition, the element 2 is positioned by the restricting blocks 20 and 21 in the positioning portion 16 so as to be movable in the vertical direction.
[0026]
The element 2 positioned between the restriction walls 22 and 23 is supported on the first displacement sensors 17a to 17e. Each of the first displacement sensors 17a to 17e is provided corresponding to five measurement points a, b, c, d, and e set in advance in the positioned element 2. Specifically, the first displacement sensors 17a, 17b, and 17c are provided corresponding to the three measurement locations a, b, and c of the body 5 of the element 2, and the first displacement sensors 17d, 17e are the head 7 of the element 2. Are provided corresponding to the two measurement points d and e.
[0027]
Further, as shown in FIGS. 1 and 2, each of the first displacement sensors 17a to 17e includes a contact 24 that can be freely projected and retracted, and the contact 24 is urged by an unillustrated spring or the like on the sensor body 25. It is urged in the projecting direction by, so that it can be displaced freely. Each of the first displacement sensors 17a to 17e outputs a signal corresponding to the displacement of the contactor 24 in the backward direction when the contactor 24 comes into contact with the element 2 at the advanced position.
[0028]
As shown in FIGS. 1 and 2, the movable portion 15 includes a sliding member 27 that is slidable along a rail 26 that extends vertically on the inclined portion 12 of the base 13. Five second displacement sensors 28 a to 28 e (second displacement sensors 28 c and 28 e are shown in FIGS. 1 and 2) are supported by the sliding member 27 by support members 29 and 30. Each of the second displacement sensors 28a to 28e includes a contact 29 configured similarly to the first displacement sensors 17a to 17e, and is disposed corresponding to each of the first displacement sensors 17a to 17e.
[0029]
The sliding member 27 is slid along the rail 26 by lifting means (not shown), and as shown in FIG. 2, the second displacement sensors 28a to 28e are lowered to contact the first displacement sensors 17a to 17e. Insert element 2 between them.
[0030]
Further, the lower end wall 31 of the sliding member 27 abuts against a stopper 32 projecting from the fixed portion 14 at a position where the contact 29 of each of the second displacement sensors 28a to 28e presses against the element 2. Lowering of the sliding member 27 is restricted. As the lifting means, although not shown, a cylinder by hydraulic pressure or air pressure, a ball screw driven by a rotary motor, or the like can be adopted.
[0031]
Each of the first displacement sensors 17a to 17e and each of the second displacement sensors 28a to 28e is connected to plate thickness measuring means and flatness measuring means (not shown) via lead wires 33 and 34 extending from the base end portions. Has been. The plate thickness measuring means measures the plate thickness of each measurement location a, b, c, d, e based on the displacement amount obtained from each of the first displacement sensors 17a-17e and each of the second displacement sensors 28a-28e. . The flatness measuring means measures the flatness of the element 2 based on the displacement amounts obtained from the first displacement sensors 17a to 17e and the second displacement sensors 28a to 28e. In the present embodiment, a computer (not shown) is employed as the plate thickness measuring unit and the flatness measuring unit, and the measurement of the plate thickness and the flatness is simultaneously processed.
[0032]
Next, measurement of the plate thickness and flatness of the element 2 by the measuring apparatus 1 of the present embodiment will be described. First, as shown in FIG. 1, the sliding member 27 is raised, and the second displacement sensors 28a to 28e are separated from the first displacement sensors 17a to 17e, as shown in FIG. The element 2 is introduced into the positioning portion 16 from the body 5 side. At this time, since the fixed portion 14 is provided so as to be inclined by the inclined portion 12 of the base 13 (see FIG. 1), the element 2 moves in the insertion direction along the restriction walls 22 and 23 of the restriction blocks 20 and 21. It is guided smoothly and is positioned when both regulating walls 22 and 23 are brought into close contact with both end edges 8 and 9 of the body 5 of the element 2. At this time, as shown in FIG. 3 and FIG. 4A, the regulating walls 22 and 23 are brought into contact with the substantially lower half of the element 2 in the plate thickness direction, and the element 2 is connected to the first displacement sensors 17a to 17a. 17e is supported.
[0033]
Next, the sliding member 27 is lowered by an elevating means (not shown), and as shown in FIG. 2, the second displacement sensors 28a to 28e are mounted on the element 2 supported by the first displacement sensors 17a to 17e in the positioning portion 16. Is abutted. The lower end wall 31 of the sliding member 27 is in contact with the stopper 32, and the first displacement sensors 17 a to 17 e and the second displacement sensors 28 a to 28 e sandwich the element 2 in this state. At this time, as shown in FIG. 4B, the element 2 is pushed downward by the contact 29 of each of the second displacement sensors 28a to 28e. The restriction blocks 20 and 21 have such thickness that the restriction walls 22 and 23 are in contact with the substantially lower half of the element 2 in the plate thickness direction, thereby preventing interference with the contact 29 of each of the second displacement sensors 28a to 28e. Is done. The contacts 24 of the first displacement sensors 17a to 17e are displaced downward, and the contacts 29 of the second displacement sensors 28a to 28e are displaced upward.
[0034]
Then, the thickness and flatness of the element 2 are measured based on signals output from the first displacement sensors 17a to 17e and the second displacement sensors 28a to 28e. In the plate thickness measuring means, the displacement amount at the advance position of the first displacement sensors 17a to 17e and the displacement at the advance position of the second displacement sensors 28a to 28e for each measurement location a, b, c, d, e. If the amount is added and converted into dimensions, the plate thickness for each measurement point a, b, c, d, e can be easily calculated, and the quality of the plate thickness of the element 2 can be reliably determined. it can.
[0035]
Here, the case where the flatness of the element 2 is measured by the flatness measuring means will be described with reference to FIGS. 5 (a) to 5 (e). 5 (a) to 5 (e), for convenience of explanation, the element 2 is placed in the horizontal direction from the body 5 side, and the first displacement sensors 17a to 17e and the second displacement sensors 28a. ˜28e is schematically represented by arrows, and each part of the measuring apparatus 1 is omitted.
[0036]
The flatness measuring means uses a pair of upper and lower first and second first and second displacement sensors 17a, 17c and second displacement sensors 28a, 28c at measurement positions a, c near the side edges 8, 9 of the body 5. A reference line (indicated by a one-dot chain line) x that is a straight line passing through the center point of the two displacement sensors 17a and 28a and the center point of the first and second displacement sensors 17c and 28c is calculated. And the displacement difference in the advance position of the 1st displacement sensor 17a, 17c and the 2nd displacement sensor 28a, 28c of the measurement position a, c with respect to this reference line x, and each 1st of other measurement position b, d, e. The displacement differences at the forward positions of the displacement sensors 17b, 17d, 17e and the second displacement sensors 28b, 28d, 28e are compared, and the quality of the flatness is determined from the variation.
[0037]
In the element 2a shown in FIG. 5A, the displacement difference between each of the first displacement sensors 17b, 17d, and 17e and each of the second displacement sensors 28b, 28d, and 28e is constant with respect to the reference line x. The flatness is good.
[0038]
In the element 2b shown in FIG. 5B, the displacement difference between the first displacement sensor 17b and the second displacement sensor 28b at the center of the body 5 with respect to the reference line x is larger than the other portions. Accordingly, it can be confirmed that the body 5 is bent, and the element 2b is considered to be defective because of its low flatness.
[0039]
In the element 2c shown in FIG. 5C, the displacement difference between the first displacement sensors 17b, 17d, 17e and the second displacement sensors 28b, 28d, 28e at the measurement positions b, d, e with respect to the reference line x is This is different from the displacement difference between the first displacement sensors 17a and 17c and the second displacement sensors 28a and 28c at the measurement positions a and c with respect to the reference line x. As a result, it can be seen that a bend occurs at any position, and the element 2c is regarded as defective because of its low flatness.
[0040]
In the element 2d shown in FIG. 5D, the displacement difference between the first displacement sensor 17b and the second displacement sensor 28b in the center of the body 5 with respect to the reference line x is good, but the first displacement sensor 17d, 17e and the second displacement sensors 28d and 28e have different displacement differences with respect to the reference line x. As a result, it can be seen that a twist is generated between the body 5 and the head 7 of the element 2d, and the element 2d has a low flatness and thus is considered defective.
[0041]
For example, at the time of measurement shown in FIG. 2, the element 2 sandwiched between the first displacement sensors 17a to 17e and the second displacement sensors 28a to 28e is inclined to one side as shown in FIG. 5 (e). It is conceivable that measurement is performed in a different posture. In this case, the displacement amounts obtained from the first displacement sensors 17a to 17e and the second displacement sensors 28a to 28e are all different values. However, in the flatness measuring means, each measurement position a with respect to the reference line x is determined. , B, c, d, e, the flatness of the element 2 is measured by the displacement difference between the first displacement sensor 17b, 17d, 17e and the second displacement sensor 28b, 28d, 28e with respect to the reference line x. Is constant, the element 2 is not deformed and the flatness is good, so that it is possible to prevent an erroneous determination of the flatness simply due to a difference in displacement.
[Brief description of the drawings]
FIG. 1 is an explanatory side view showing a measuring apparatus according to an embodiment of the present invention, partially in vertical section.
FIG. 2 is an explanatory view showing a measurement state of an element in the apparatus of FIG.
FIG. 3 is an explanatory plan view of a positioning unit of the apparatus according to the embodiment.
FIG. 4 is an operation explanatory view showing an enlarged main part of the apparatus according to the present embodiment.
FIG. 5 is an explanatory diagram schematically showing displacement of each displacement sensor with respect to each deformation state of the element.
FIG. 6 is an explanatory perspective view showing a part of a continuously variable transmission belt.
FIG. 7 is an explanatory diagram showing the shape of an element.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Measuring apparatus 2, 2a, 2b, 2c, 2d ... Element, 5 ... Body, 6 ... Neck, 7 ... Head, 8, 9 ... End edge, 16 ... Positioning part, 17a, 17b, 17c, 17d, 17e ... 1st displacement sensor, 22, 23 ... Restriction wall, 28a, 28b, 28c, 28d, 28e ... 2nd displacement sensor, a, b, c, d, e ... Measurement position.

Claims (2)

Method for measuring element of continuously variable transmission belt comprising body having a pair of end edges forming both sides forming a V surface in contact with a pulley of continuously variable transmission, and a head connected to the body via a neck Because
The element is positioned so that it can be raised and lowered in a posture in which both surfaces thereof are directed in the vertical direction,
A plurality of first displacement sensors corresponding to a lower surface of a plurality of measurement points set in advance on the body and head of the positioned element,
A plurality of second displacement sensors facing above each first displacement sensor are brought into contact with the body of the positioned element and the upper surface of the head,
Based on the amount of displacement obtained from each displacement sensor, measure the thickness of each measurement location,
When measuring the plate thickness of each measurement location, each measurement location of the element is provided in the vicinity of both end edges forming the V surface of the body of the element, the central portion between both end edges, and both end portions of the head, The center point of the pair of upper and lower first and second displacement sensors at the measurement point near the one side edge of the body and the pair of upper and lower first and second displacements at the measurement point near the other side edge of the body. The flatness of the element is measured on the basis of a vertical displacement difference obtained from each displacement sensor at each measurement location with respect to the reference line with reference to a straight line passing through two locations with the center point of the sensor. A method for measuring the elements of continuously variable transmission belts. A device for measuring an element of a belt for a continuously variable transmission, comprising: a body having a pair of end edges forming a V surface in contact with a pulley of the continuously variable transmission; and a head connected to the body via a neck. Because
A positioning part for positioning the element so as to be movable up and down in a posture in which both surfaces thereof are directed in the vertical direction;
The element positioned at the positioning portion is disposed below the positioning portion corresponding to a plurality of measurement points set in advance on the body and the head, and is in contact with the lower surface of the element so that the element is supported. A plurality of first displacement sensors;
The lateral movement of the element is regulated by abutting against the lower half part in the thickness direction of both end edges forming the V surface of the body of the element provided on the first displacement sensor, which is provided on the positioning part. A pair of regulating walls
The element is provided so as to be movable up and down facing each first displacement sensor, and in contact with the upper surface of the body and the head of the element positioned at the positioning portion in the lowered position, the element is sandwiched between each first displacement sensor and A plurality of second displacement sensors that,
Elevating means for raising and lowering each second displacement sensor integrally;
When the elements are held between the second displacement sensors and the first displacement sensors by the lowering of the second displacement sensors by the elevating means, based on the displacement amount obtained from the respective displacement sensors, A plate thickness measuring means for measuring the plate thickness of each measurement location;
A flat line for calculating the flatness of the element based on a vertical displacement difference obtained from each displacement sensor at each measurement point with respect to the reference line by calculating a reference line based on two predetermined points among the measurement points. A measuring device for an element of a belt for continuously variable transmission, comprising: a degree measuring means.

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