JP3875686B2 - Plate thickness measuring device for continuously variable transmission belt element - Google Patents

Description

  The present invention relates to a measuring apparatus for measuring the plate thickness of an element of a continuously variable transmission belt.

  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 that constitutes 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.

  By the way, the element punched from the metal plate material may have variations in the plate thickness of each part. Such elements having variations in plate thickness 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 belt for continuously variable transmission. 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.

  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. However, manual element measurement requires the skill of an operator in order to obtain high measurement accuracy, and there is an inconvenience that measurement values vary from worker to worker. Further, in the measurement of the plate thickness of the element by the operator's manual work, the plate thickness must be measured one by one for a plurality of locations of the body and head of the element. is there.

  Therefore, a measuring apparatus capable of measuring the plate thickness at a plurality of measurement locations of the element at the same time is known (for example, see Patent Document 1). In this type of measuring device, the element is positioned so that both surfaces thereof can be raised and lowered in the vertical direction, and then a plurality of measurement elements preset on the body and head of the positioned element are placed on the lower surface of a plurality of measurement points. The measuring elements of the first displacement sensor are brought into contact with each other. Subsequently, the measuring elements of the plurality of second displacement sensors facing above the measuring elements of the first displacement sensors are brought into contact with the body of the positioned element and the upper surface of the head. And the plate | board thickness of each measurement location is measured based on the displacement amount obtained from the measuring element of each displacement sensor. As a result, a plurality of plate thicknesses can be measured at a time, so that the plate thickness measurement can be performed more efficiently than when the operator measures the plate thickness of each measurement location one by one using a micrometer. .

  By the way, this kind of element may bend slightly when it is punched from a metal plate. This bending is very rare in the direction along the center line from the center of the head to the center of the body through the neck, but in particular the direction of the ear extension on both sides of the head and the left and right direction of the body (both center line In a direction orthogonal to the above). Moreover, the bending of the body in the left-right direction and the bending of the head in both ear directions are not constant.

  Furthermore, this type of element is partially punched by being punched from a metal plate material (thinned recess formed by being pulled from the peripheral edge during punching). Sometimes. When such a shrinkage occurs, if a displacement sensor equipped with a probe having a hemispherical or conical tip is used, the tip of the probe enters and contacts the inside of the retract In this case, the measurement is thinner than the actual measurement, and an accurate measurement result cannot be obtained. For this reason, in recent years, a displacement sensor including a probe having a flat tip is employed to prevent the tip of the probe from entering the interior of the retract.

However, when a probe with a flat tip is brought into contact with each measurement point at the same time, as described above, the tip of the probe is not evenly contacted with the element at the measurement point inclined by bending. The distance between the two measuring elements is measured to be larger than the actual plate thickness in accordance with the inclination angle of the location, and there is a disadvantage that the measurement accuracy is lower than the manual measurement by a skilled worker.
JP 2001-304847 A

  By eliminating such inconvenience, the present invention can measure the plate thickness with high accuracy without being affected by the depression due to bending or shrinkage of the element, and can efficiently measure the plate thickness of the element. An object of the present invention is to provide a plate thickness measuring device for an element of a continuously variable transmission belt.

  In order to achieve the above object, the present invention provides an element including a body having V-sides that are in contact with pulleys of a continuously variable transmission formed on left and right side edges, and a head connected to the body via a neck. A device for measuring a plate thickness of an element of a continuously variable transmission belt for measuring a plate thickness of a plurality of measurement points set in advance, wherein each measurement point of the element is exposed, and the head is located above A holding means for holding the element in an upright posture with the body facing downward, and the elements held by the holding means are positioned on the front side and the rear side of the element so as to be opposed to each other and to be able to move forward and backward to contact and separate A pair of measuring elements with a flat tip on the side that contacts the element, and the thickness of the element from the distance between the measuring elements by contacting both measuring elements to the front and rear surfaces of the element. The thickness measuring means for measuring the method and the holding means or both measuring elements are moved in the vertical and horizontal directions perpendicular to the advancing / retreating direction of the measuring element, and each measuring point of the element is sequentially positioned between the measuring elements. The holding means has an interval that can maintain the standing state of the element and that allows an attitude of the element that is moved by contact of the two measuring elements to the element during measurement. And a pair of support members opposed to each other, and the element is supported between the two support members.

  When measuring the plate thickness of each measurement location of the element with the plate thickness measuring device of the present invention, first, the element is held by the holding means. In the holding means, the element is housed between a pair of support members and is held in an upright posture with the head up and the body down.

  Next, any one of the measurement points of the element held by the holding member by the moving unit is positioned between the two measuring elements. Then, both measuring elements are brought into contact with the measurement location, and the thickness of one measurement location of the element is measured from the distance between the two measuring features by the thickness measuring means. At this time, since the tip of the both contact elements contacting the element is a flat surface, the tip of the measurement element may enter the inside of the recess even if there is a dent due to shrinkage in a part of the measurement location. Therefore, it is possible to measure the thickness with high accuracy by preventing the influence of shrinkage.

  Further, the interval between the two support members is an interval that allows the posture of the element to be generated by the movement of the two contact elements against the element during measurement. As a result, the element between the support members of the holding means is allowed to move when both measuring elements abut. That is, when the element is slightly bent, when both measuring elements come into contact with the element, the element moves so that the posture follows the flat surface at the tip of both measuring elements. In this state, both measuring elements are in contact with any one of the measurement points. Therefore, even if the element is bent, the flat tip of both measuring elements is in contact with the element. Then, it is absorbed in the part where both measuring elements are not in contact, and the flat tips of both measuring elements can be reliably in contact with the element. As a result, even if the element is bent, its influence can be prevented and the plate thickness can be measured with high accuracy.

  Subsequently, the two measuring elements are separated from the element, and the other one of the measuring positions of the element held by the holding member by the moving means is positioned between the two measuring elements. Next, both measuring elements are brought into contact with the measurement location, and the plate thickness is measured by the plate thickness measuring means. Thereafter, the measurement is performed for each measurement location in the same manner. As a result, it is possible to measure all measurement points set in the element, and it is possible to improve work efficiency compared to manual work. In addition, as described above, the measurement accuracy can be improved without being affected by the bending of the element, as compared with the case where each measuring element is brought into contact with a plurality of measuring points at a time by measuring each of the measuring points. Can be improved.

  An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an explanatory side view showing the measuring apparatus of the present embodiment, FIG. 2 is an explanatory front view showing the measuring apparatus of the present embodiment, FIG. 3 is an explanatory side view showing the main part of the holding means, and FIG. FIG. 5 is an explanatory view showing the plate thickness measuring means. FIG.

  A measuring apparatus 1 according to this embodiment shown in FIG. 1 measures the plate thickness of an element 2. Although not shown, the elements 2 are stacked and arranged in a ring shape, and are integrally bound by a stacked ring formed by stacking a plurality of metal plate-like rings to form a continuously variable transmission belt. The element 2 is formed by punching a metal plate, and includes a body 3 and a head 5 connected to the body 3 via a neck 4 as described with reference to FIG. Both end edges of the body 3 form a V surface that contacts a pulley of a continuously variable transmission (not shown). The head 5 includes a pair of ears 6 and 7 extending along the body 3 and is formed in a substantially triangular shape. A dimple 8 protruding in one direction is formed at the center of the head 5, and a concave hole corresponding to the dimple 8 is formed on the back side of the dimple 8. In addition, in the element 2, five measurement locations where the plate thickness is measured by the measuring apparatus 1 of the present embodiment are set. That is, each measurement point is a boundary position center measurement part a between the body 3 and the neck 4, a pair of ear measurement parts b and c, and a pair of body measurement parts d and e.

  Next, the configuration of the measuring apparatus 1 of the present embodiment will be described. 1 and 2, 9 is a holding means for holding the element 2, 10 is a moving means for moving the holding means 9, and 11 is a plate thickness measuring means for measuring the plate thickness of the element 2 held by the holding means 9. It is.

  The holding means 9 includes a plate member 12 connected to a moving means 10 to be described later, and a pair of element holding portions 13 provided on the plate member 12. As shown in FIG. 2, the element holding part 13 holds the large element 2L and the small element 2S, respectively. In the vicinity of the element holding portion 13 that holds the large element 2L, a gauge 14a having a reference plate thickness for the large element 2L is provided. A gauge 14b having a reference plate thickness for the small element 2S is provided in the vicinity of the element holding portion 13 that holds the small element 2S. As shown in FIG. 3, each element holding portion 13 includes a pair of support members 15 and 16 that face each other in the plate thickness direction of the element 2. Both the support members 15 and 16 are provided at an interval at which the standing state of the element 2 can be maintained, and further, this interval is provided at an interval allowing movement of the element 2 at the time of measurement as will be described later. Further, as shown in FIG. 4, at the upper edges of the support members 15 and 16, each measurement location of the element 2, that is, the central measurement portion a of the boundary position between the body 3 and the neck 4 and a pair of ear measurement portions b. , C, and a pair of body measuring portions d, e are formed, and a protruding portion 17 is formed to maintain the element 2 in an upright state. A pair of mounting members 18 and 19 for mounting the element 2 are provided between the support members 15 and 16. The mounting members 18 and 19 engage with the recesses 20 and 21 of the body 3 to restrict the lateral movement of the element 2.

  As shown in FIGS. 1 and 2, the moving means 10 is provided on a support wall 23 erected on the seat plate 22 and reciprocally movable in the horizontal direction, and is provided on the horizontal slide base 24. And a vertical slide base 25 that can reciprocate in the vertical direction. On one side of the support wall 23, a motor 26 that drives the reciprocation of the lateral slide base 24 in the lateral direction is provided. Although not shown, the motor 26 moves the horizontal slide base 24 by rotating a ball screw threadedly engaged with the horizontal slide base 24 and extending in the horizontal direction. A motor 27 that drives the vertical slide base 25 to reciprocate in the vertical direction is provided above the horizontal slide base 24. Although not shown, the motor 27 moves the vertical slide base 25 by rotating a ball screw threadedly engaged with the vertical slide base 25 and extending in the vertical direction. As shown in FIG. 1, the holding means 9 is connected to the vertical slide base 25 via a connecting member 28 extending forward.

  As shown in FIG. 1, the plate thickness measuring means 11 is provided on an upper portion of a support 29 erected on the seat plate 22, and as shown in FIG. 5, a long plate-like frame connected to the support 29. 30, a rail 31 extending horizontally in the longitudinal direction of the frame 30, a first sliding member 32 guided by the rail 31 and sliding in the horizontal direction, and a first sliding member guided by the rail 31 And a second sliding member 33 that slides in a direction approaching / separating from 32.

  The first sliding member 32 is provided with an interval distance sensor 34 for measuring the plate thickness and a first measuring element 35 having a flat tip. Further, the first probe 35 is provided with a cylinder 37 for extending and contracting the piston rod 36 in the horizontal direction. A stopper 38 is provided at a position above the cylinder 37 in the frame 30. The first sliding member 32 is coupled to the stopper 38 while being biased in a direction away from the second sliding member 33 by a spring 38a.

  In the second sliding member 33, a second measuring element 39 having a flat tip facing the first measuring element 35 and a piston rod 36 of the cylinder 37 penetrate, and the piston rod is interposed via a spring 40. A connection plate 41 connected to 36 and a measurement reference seat 42 that is provided on the connection plate 41 and presses the sensor 34 corresponding to the distance between the measuring elements 35 and 39 are provided. The second sliding member 33 is provided with an abutting member 41 a that abuts against the stopper 38.

  The plate thickness measuring means 11 configured as described above will be described with reference to FIG. 5. When the cylinder 37 shortens the piston rod 36, first, the second sliding member 33 becomes the first sliding member 32. The contact member 41a contacts the stopper 38. At this time, the second measuring element 39 comes into contact with the element 2 to be the measurement reference position of the element 2. When the piston rod 36 is further shortened, the thrust of the cylinder 37 is larger than the urging force of the spring 38 a, so that the spring 38 a is compressed and the first sliding member 32 moves toward the second sliding member 33. Accordingly, the tip of the sensor 34 comes into contact with the measurement reference seat 42.

  When the piston rod 36 is further shortened, the first measuring element 35 comes into contact with the element 2 and the element 2 is sandwiched together with the second measuring element 39. At this position, the element 2 is positioned and the gap with the support members 15 and 16 is properly maintained. When the piston rod 36 is further shortened, the piston rod 36 stops at the rearmost end of the cylinder 37 while compressing the spring 40. At this time, the difference between the urging force of the spring 38a (weak at a fixed load) and the urging force of the spring 40 (adjustable and strong) becomes the measurement pressure. As a result, the optimum measurement pressure can be selected by adjusting the biasing force of the spring 40 without depending on the measurement pressure of the sensor 34. The sensor 35 reads the stroke from when the tip of the sensor 35 comes into contact with the measurement reference seat 42 until the first measurement piece 35 comes into contact with the element 2 and stops. Then, the plate thickness of the element 2 is calculated from the relative value of the stroke of the sensor 35 read at this time and the thickness dimension serving as a reference of the gauges 14a and 14b measured in advance by the sensor 35.

  In this way, the measurement operation of the plate thickness measuring means 11 is completed. Thereafter, the second sliding member 33 comes into contact with the regulating member 30a and stops, and the first sliding member 32 comes into contact with the regulating member (not shown). By extending the piston rod 36 until it stops, both the measuring elements 35 and 39 can be immediately separated from the element 2. In this state, the element 2 can be moved by the moving means 10.

  Next, measurement of the plate thickness of the element 2 by the measuring apparatus 1 of the present embodiment will be described. First, referring to FIG. 1, the vertical slide base 25 of the moving means 10 is lowered, the holding means 9 is separated from the plate thickness measuring means 11, and the element holding portion 13 is opened. Then, the element 2 is placed in a standing state between the support members 15 and 16 of the holding means 9. At this time, as shown in FIG. 4, in the element 2, the concave portions 20 and 21 of the body 3 are engaged with the mounting members 18 and 19 between the support members 15 and 16, and lateral movement is restricted.

  Next, as shown in FIG. 1, the vertical slide base 25 of the moving means 10 is raised, and the element 2 is positioned between the first measuring element 35 and the second measuring element 39 of the plate thickness measuring means 11. Next, referring to FIGS. 4 and 5, the first measuring element 35 and the second measuring element 39 are sequentially brought into contact with the measurement points a to e, and the plate thickness dimensions of the measurement points a to e are measured. The The interval between the support members 15 and 16 is an interval that allows the posture of the element that is moved by the contact of the two measuring elements 35 and 39 to the element 2 at the time of measurement. The element 2 is supported between the support members 15 and 16 having such an interval, and the first measuring element 35 and the second measuring element 39 are sandwiched one by one at each measuring position a to e. Therefore, when the flat tips of the two measuring elements 35 and 39 come into contact with the element 2, the element 2 moves between the support members 15 and 16, and the two measuring elements 35 and 39 are flat. The posture follows the tip, and the bent portion of the element 2 is absorbed in the portion where the measuring elements 35 and 39 are not in contact. As a result, even when the element 2 is bent, the flat tips of both the measuring elements 35 and 39 are surely brought into contact with the element 2, and all the measurements are not affected by the bending of the element 2. The plate thickness of the locations a to e can be measured. In addition, since the tips of the measuring elements 35 and 39 are formed flat, even if a dent due to shrinkage occurs in a part of the measurement points a to e, the tips of the measuring elements 35 and 39 are inside the depression. The plate thickness can be measured without entering.

  In addition, in this embodiment, although the thing provided with the element holding | maintenance part 13 holding each of the large sized element 2L and the small sized element 2S was shown, it is not restricted to this, Although not illustrated, either one is shown. Only a holding portion for holding the element 2 may be provided.

BRIEF DESCRIPTION OF THE DRAWINGS Explanatory side view which shows the measuring apparatus of one Embodiment of this invention. An explanatory front view showing a measuring device of this embodiment. Explanatory side view showing the main part of the holding means. Explanatory front view which shows a partially broken main part of the holding means. Explanatory drawing which shows a plate | board thickness measuring means.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Plate thickness measuring apparatus, 2 ... Element, 3 ... Body, 4 ... Neck, 5 ... Head, 9 ... Holding means, a, b, c, d, e ... Measurement location, 10 ... Moving means, 11 ... Plate thickness Measuring means, 15, 16 ... support members, 35, 39 ... measuring elements.

Claims (1)

Thicknesses of a plurality of measurement points set in advance in an element including a body in which a V surface contacting a pulley of a continuously variable transmission is formed on left and right side edges and a head connected to the body via a neck. A device for measuring the thickness of an element of a continuously variable transmission belt for measuring
Holding means for exposing each measurement point of the element and holding the element in an upright posture with the head up and the body down;
Positioned on the front side and the rear side of the element held by the holding means so as to face each other and to be able to advance and retreat to contact and separate from the element, the tip on the side contacting the element is a flat surface A pair of gauge heads,
A thickness measuring means for measuring the thickness dimension of the element from the distance between the two measuring elements by bringing both measuring elements into contact with the front and rear surfaces of the element;
Moving the holding means or both measuring elements in the vertical and horizontal directions perpendicular to the advancing and retreating direction of the measuring element, and sequentially moving each measuring point of the element between the measuring elements,
The holding means is a pair of opposing elements that can maintain an upright state of the element and have an interval that allows the posture of the element to be generated by the contact of the two measuring elements against the element during measurement. A plate thickness measuring device for an element of a belt for a continuously variable transmission, comprising a support member and supporting the element between both support members.

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