JP2004271437A - Measuring device and measuring method for element for endless metal belts - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To measure the shape of an element constituting an endless metal belt. <P>SOLUTION: The element measuring device 1000 comprises an X-direction datum plane 1300 for holding the element 102 at a datum position; a Y-direction datum plane 1400; a Z-direction datum plane 1500; and a detector for detecting three-dimensional data of each of dimple side probe 1100 position and hole side probe 1200 position, by making the dimple side probe 1100 movable in X, Y directions and moving in Z-direction so as to couple the dimple side probe 1100 having a recess part in a dimple of the element 102 held at the datum position, and making the hole side probe 1200 movable in X, Y directions and moving in Z-direction so as to couple the hole side probe 1200 having a projection part in a hole of the element 102. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an endless metal belt formed by arranging a large number of plate-like elements facing each other in an annular shape and tying each element annularly through a hoop as a metal band to the elements, and particularly to an endless metal belt. An apparatus and method for efficiently and accurately measuring the dimensions of elements in a belt.
[0002]
[Prior art]
In some vehicles, a belt-type continuously variable transmission (CVT: Continuously Variable Transmission) that adjusts the transmission gear ratio steplessly according to the traveling state of the vehicle is mounted. This CVT can efficiently extract the engine output, and is excellent in improving fuel efficiency and running performance. As one of the CVTs put into practical use, there is a CVT that uses a metal belt and a pair of pulleys to continuously change the speed continuously by changing the effective diameter of the pulley by hydraulic pressure. An endless metal belt is used by being wound around an input pulley attached to an input shaft and an output pulley attached to an output shaft. The input pulley and the output pulley each include a pair of sheaves whose groove width can be changed steplessly. By changing the groove width, the winding radius of the endless metal belt around the input pulley and the output pulley changes, As a result, the rotational speed ratio between the input shaft and the output shaft, that is, the gear ratio can be continuously and continuously changed.
[0003]
This endless metal belt is manufactured by preparing a large number (about 400) of thin plate-shaped elements and combining these numerous elements. Such an endless metal belt element is manufactured by stamping a thin metal plate, but if the dimensions of the element include an unacceptable error, slippage between the endless metal belt and the pulley. In some cases, the continuously variable transmission does not operate normally due to the occurrence of a malfunction such as the occurrence of such a problem. For this reason, it is important to accurately manage the dimensions of the elements.
[0004]
Japanese Patent Application Laid-Open No. 2001-304847 (Patent Document 1) discloses a measurement method capable of efficiently and accurately measuring the flatness and plate thickness of an element. This measuring method is based on a belt for a continuously variable transmission including a body having a pair of edges forming a V surface in contact with a pulley of the continuously variable transmission on both sides, and a head connected to the body via a neck. This is a method for measuring an element. This measuring method comprises the steps of positioning an element so that both sides thereof can move up and down in a vertical direction, and a plurality of first displacements on a lower surface of a plurality of measurement points preset on a body of the positioned element and a head. Contacting the sensors in correspondence with each other, contacting the plurality of second displacement sensors facing above each first displacement sensor with the body of the positioned element and the top surface of the head, A step of measuring the thickness of each measurement point based on the obtained displacement amount; and, when measuring the thickness of each measurement point, a reference line based on a straight line passing through two predetermined points among the measurement points. Measuring the flatness of the element based on the vertical displacement difference obtained from each displacement sensor at each measurement point with respect to.
[0005]
According to this measuring method, the element is sandwiched from above and below by the plurality of first displacement sensors and the plurality of second displacement sensors while being positioned. Each of the first displacement sensors and each of the second displacement sensors are vertically opposed to each other via respective measurement points set on the body and the head of the element and are brought into contact with the element. This makes it possible to obtain the amount of displacement at the forward position between the first displacement sensor and the second displacement sensor at each measurement point of the element. Then, by obtaining the first displacement sensor and the second displacement sensor at each measurement point of the element and the displacement amount at the forward position, it is possible to accurately measure the thickness of each measurement point of the element. As a result, compared to a case where an operator measures the thickness of each measurement point using a micrometer, the thickness of a plurality of locations can be measured at once, and a high accuracy can be obtained based on the displacement amount obtained from each displacement sensor. Plate thickness measurement can be performed quickly. Further, at this time, a vertical displacement difference obtained from a forward position of each displacement sensor at each measurement point with respect to the reference line is determined based on a straight line passing through two predetermined points among the measurement points. If the element is deformed such as bending or twisting, the displacement difference between the measurement points with respect to this reference line varies. Then, the flatness of the element can be easily measured from the variation of the displacement difference at each measurement point obtained at this time, and the flatness can be accurately and efficiently measured as compared with the conventional case of visual inspection by an operator. be able to.
[0006]
[Patent Document 1]
JP 2001-304847 A
[0007]
[Problems to be solved by the invention]
By the way, an element for a continuously variable transmission is formed by laminating a number of elements in the front and back directions. In the front and back direction of the element, a convex portion (dimple) and a concave portion (hole) that fit together between the elements are formed by press working. If the position accuracy of the dimples and holes includes an error outside the allowable range, the relative positions of a large number of elements are shifted, and slippage occurs between the pulley and the endless metal belt formed by laminating a large number of elements. Trouble occurs.
[0008]
However, the measuring method disclosed in Patent Document 1 cannot accurately measure the positions of such dimples and holes.
[0009]
Conventionally, such dimple and hole positions are measured by first placing one of the elements face up on a reference surface and measuring several points with a three-dimensional measuring device having, for example, a contact type probe. After that, the element was turned over, placed on the reference surface with the back side facing up, and several points were measured with a three-dimensional measuring device. For this reason, it took two to three minutes to measure several points on each side. Furthermore, since the number of elements required for one endless metal belt is large, it takes time to measure one element. Therefore, it is necessary to measure the positions of dimples and holes of one endless metal belt. It was almost impossible.
[0010]
The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a measuring apparatus and a measuring apparatus for efficiently and accurately measuring the shape and size of dimples and holes of elements constituting an endless metal belt. Is to provide a way.
[0011]
[Means for Solving the Problems]
The measuring device according to the first invention is characterized in that a plurality of elements are laminated by fitting a convex portion and a concave portion provided on the front and back of the element, and passed through an annular hoop. Measure the shape of the element used. The measuring device includes a holding unit for holding the element at a reference position, and a first probe having a concave portion fitted to a convex portion of the element held at the reference position. First moving means for three-dimensionally moving the second tracing element so that a second tracing element having a convex part is fitted into the concave part of the element held at the reference position. And a detecting means for detecting three-dimensional data for each of the position of the first trajectory and the position of the second trajectory.
[0012]
According to the first aspect, the first probe having a concave portion on the convex portion (dimple) provided on the surface of the element, and the second probe having the convex portion on the concave portion (hole) provided on the back surface of the element. Are moved three-dimensionally. Since the dimples and holes have tapered surfaces, these probes fit into the dimples and holes so as to be guided by the taper. At this time, these probes come close to each other while being moved on, for example, a two-dimensional plane other than the direction approaching the element, so that they are guided by the taper and move to the positions of the dimple and the hole, respectively, and fit. Since the position of the first probe and the position of the second probe in the fitted state are each three-dimensionally measured, the positions of the dimple and the hole can be simultaneously and accurately measured. As a result, it is possible to measure the front and back sides in one measurement without having to turn the front and back sides upside down, and to measure the dimples and holes of the elements constituting the endless metal belt efficiently. Can be provided.
[0013]
In the measuring device according to the second invention, in addition to the configuration of the first invention, the first moving means can move the first tracing stylus on the two-dimensional plane, and move the first trajectory perpendicular to the two-dimensional plane. Means for moving in the direction. The second moving means includes means for moving the second probe in a direction perpendicular to the two-dimensional plane while allowing the second probe to move on the two-dimensional plane.
[0014]
According to the second invention, the first probe and the second probe move in the direction perpendicular to the two-dimensional plane while being movable on the two-dimensional plane, and fit into the dimple and the hole, respectively. I do. Since they move close to each other while moving in the two-dimensional plane, the respective tracings are guided by the taper and fitted at the positions of the dimples and the holes, respectively.
[0015]
In the measuring device according to the third invention, in addition to the structure of the first or second invention, the holding means is provided at a position facing the contact means for contacting the reference surface of the element and the holding means. Pressing means for pressing the reference surface of the element against the contact means.
[0016]
According to the third aspect of the present invention, the reference surface of the element and the abutment unit abut on the pressing unit, so that the reference surface can be accurately pressed against the abutment unit.
[0017]
The measuring device according to a fourth aspect of the present invention further includes a measuring unit for measuring a displacement amount of the pressing unit in addition to the configuration of any one of the first to third aspects of the present invention. The detecting means corrects the detected positions of the first and second tracing elements based on the measured amount of displacement, and detects means for detecting the positions of the first and second tracing elements. Including.
[0018]
According to the fourth aspect, when the reference surface of the element is brought into contact with the contacting means by the pressing means, the measuring means measures the displacement of the pressing means. By comparing the measured displacement with the reference surface of the non-defective element in contact with the contact means, an error in the outer dimension of the element itself can be calculated. In consideration of this error, the positions of the detected first and second trajectories can be corrected, and the positions of the first and second trajectories can be accurately detected.
[0019]
According to a fifth aspect of the present invention, in addition to the configuration according to any one of the first to fourth aspects, the measuring device according to any one of the first to fourth aspects, further includes a storage unit for storing reference data serving as a reference in advance, and a first probe And determining means for determining the quality of the element based on the position of the second probe and the stored reference data.
[0020]
According to the fifth aspect, the reference data of the non-defective element is stored in the storage means, and the data of the positions of the first and second tracings detected by the detecting means are determined by the tolerance data from the reference data. If it is within the range, it can be determined as a good product.
[0021]
A measuring device according to a sixth aspect of the present invention is the measuring device according to any one of the first to fifth aspects, in which the first measuring element is moved by the first moving means and the second measuring means is moved by the second moving means. Control means for controlling the first moving means and the second moving means so that the movement of the child and the moving of the child are overlapped in time is further included.
[0022]
According to the sixth aspect of the present invention, the measuring time can be further shortened by moving the tracing stylus temporally.
[0023]
A measuring method according to a seventh aspect of the present invention relates to a method for measuring an endless metal belt formed by stacking a plurality of elements by fitting a convex part and a concave part provided on each of the front and back of the element and passing the laminated elements through an annular hoop. Measure the shape of the element used. This measuring method includes a holding step of holding the element at a reference position, and a tertiary tracing of the first tracing stylus such that a first tracing stylus having a concave portion is fitted to a projection of the element held at the reference position. A first moving step of moving the second tracing element three-dimensionally so as to fit a second tracing element having a convex part into the concave part of the element held at the reference position. A moving step; and a detecting step of detecting three-dimensional data for each of the position of the first trajectory and the position of the second trajectory.
[0024]
According to the seventh aspect, the dimple provided on the front surface of the element has the first probe having a concave portion, and the hole provided on the back surface of the element has the second probe having a convex portion provided with a tertiary element. Former move. Since the dimples and holes have tapered surfaces, these probes fit into the dimples and holes so as to be guided by the taper. At this time, these probes come close to each other while being moved on, for example, a two-dimensional plane other than the direction approaching the element, so that they are guided by the taper and move to the positions of the dimple and the hole, respectively, and fit. Since the position of the first probe and the position of the second probe in the fitted state are each three-dimensionally measured, the positions of the dimple and the hole can be simultaneously and accurately measured. As a result, it is possible to perform one measurement on the front and back sides without having to turn over the front and back sides and perform two measurements. Therefore, a measurement method for efficiently measuring the shape and size of the dimples and holes of the elements constituting the endless metal belt is described. Can be provided.
[0025]
In the measuring method according to the eighth invention, in addition to the configuration of the seventh invention, the first moving step includes moving the first tracing stylus on a two-dimensional plane, while moving the first trajectory perpendicular to the two-dimensional plane. Moving in the direction. The second moving step includes a step of moving the second probe in a direction perpendicular to the two-dimensional plane while allowing the second probe to move on the two-dimensional plane.
[0026]
According to the eighth aspect, the first probe and the second probe move in a direction perpendicular to the two-dimensional plane while being movable on the two-dimensional plane, and fit into the dimples and the holes, respectively. I do. Since they move close to each other while moving in the two-dimensional plane, the respective tracings are guided by the taper and fitted at the positions of the dimples and the holes, respectively.
[0027]
In the measuring method according to the ninth aspect, in addition to the configuration of the seventh or eighth aspect, the holding step includes a step of contacting the reference surface of the element with the contact surface, and a step of providing the element at a position facing the contact surface. Pressing the reference surface of the element against the contact surface.
[0028]
According to the ninth aspect, the reference step and the contact surface of the element come into contact with each other in the pressing step, so that the reference surface can be accurately pressed against the contact surface.
[0029]
The measuring method according to a tenth aspect of the present invention further includes, in addition to the configuration of any of the seventh to ninth aspects, a measuring step of measuring a displacement amount when pressed against the contact surface. The detecting step includes a step of correcting the detected positions of the first and second tracing elements based on the measured displacement to detect the positions of the first and second tracing elements.
[0030]
According to the tenth aspect, when the reference surface and the contact surface of the element are in contact with each other, the measuring step measures the displacement amount. By comparing the amount of displacement when the reference surface and the contact surface of a non-defective element abut against the measured amount of displacement, it is possible to calculate the error in the outer dimensions of the element itself. In consideration of this error, the positions of the detected first and second trajectories can be corrected, and the positions of the first and second trajectories can be accurately detected.
[0031]
A measuring method according to an eleventh aspect of the present invention is the measuring method according to any one of the seventh to tenth aspects, further comprising the steps of: detecting positions of the detected first and second tracings; and reference data prepared in advance. And determining the quality of the element.
[0032]
According to the eleventh aspect, reference data of non-defective elements are prepared in advance, and the data of the positions of the first and second tracings detected in the detecting step are set in the allowable range from the reference data. If it is within, it can be determined that it is a good product.
[0033]
A measuring method according to a twelfth aspect of the present invention is the measuring method according to any one of the seventh to eleventh aspects, further comprising: moving the first probe in the first moving step; The method further includes a control step of controlling the first movement step and the second movement step so that the movement of the child is overlapped with time.
[0034]
According to the twelfth aspect, the measuring time can be further shortened by moving the tracing stylus temporally.
[0035]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the same components are denoted by the same reference numerals. Their names and functions are the same. Therefore, detailed description thereof will not be repeated.
[0036]
In the following description, a number of elements are arranged side by side in the plate thickness direction in a ring shape, and an endless metal belt configured by binding each element through a hoop to the left and right saddle portions and a belt type using the endless metal belt The continuously variable transmission will be described.
[0037]
Referring to FIG. 1, a belt-type continuously variable transmission 100 using an endless metal belt according to an embodiment of the present invention will be described. In the belt-type continuously variable transmission 100, the endless metal belt 106 is used by being wound around an input pulley 220 attached to the input shaft 200 and an output pulley 320 attached to the output shaft 300.
[0038]
The input-side pulley 220 and the output-side pulley 320 each include a pair of sheaves 108 capable of changing the groove width steplessly, and by changing the groove width by a hydraulic circuit controlled according to the traveling state of the vehicle, the endless metal is formed. The winding radius of the belt 106 around the input side pulley 220 and the output side pulley 320 is changed, so that the rotation speed ratio between the input shaft 200 and the output shaft 300, that is, the gear ratio can be continuously and continuously changed. it can.
[0039]
Referring to FIG. 2, endless metal belt 106 includes a number of elements 102 arranged side by side in the thickness direction in a ring shape, and the right and left saddle portions of each element 102 are bound through hoop 104 which is a ring-shaped metal band. Thus, as shown in FIG. 3, an endless metal belt 106 is configured as a whole.
[0040]
An example of the shape of the element 102 is shown in FIGS. The side surfaces on both sides in the width direction of the element 102 are the sheave friction surfaces 112 that come into contact with the tapered sheave surface 110 of the sheave 108 and are tapered surfaces that match the sheave surface 110. At the center in the width direction of the base portion 114 provided with the anti-sheave friction surface 112, an upwardly extending neck portion 116 in FIG. 4 is formed, and the neck portion 116 is connected to a top portion 118 extending to the left and right. . A slit is formed between the top 118 extending to the left and right and the base portion 114, and the hoop 104 is passed through the two slits on the left and right. The surface of the base portion 114 that contacts the hoop 104 is a saddle surface 120.
[0041]
The height of the saddle surface 120 is represented by a dimension from the pitch line P crossing the base portion 114. The width of the element 102 is represented by a dimension on the pitch line P. In addition, a dimple 122 having a convex shape on one surface side and a hole 123 having a concave shape on the other surface side are formed at an extension position of the neck portion 116 of the top portion 118, and the elements 102 adjacent to each other are formed. The dimple 122 and the hole 123 are fitted to each other. The surface having the dimples 122 is the front surface of the element, and the surface having the holes 123 is the rear surface of the element. Such dimples 122 and holes 123 are formed by press working and have tapered surfaces.
[0042]
As shown in FIG. 4, the saddle surface 120 has an upwardly convex curved surface shape. The hoop 104 abuts along this curved shape.
[0043]
The endless metal belt 106 is used by being sandwiched between a pair of sheaves 108. In this case, since the sheave surface 110 and the friction surface against sheave 112 are tapered surfaces, a load acts on each element 102 in the radial direction due to the clamping force of the sheave 108, but each element 102 The movement of the hoop 104 in the radial direction is restricted by the tension of the hoop 104. As a result, a frictional force is generated between the sheave surface 110 and the sheave friction surface 112, or a shear force of an oil film is generated, so that torque is transmitted between the sheave 108 and the endless metal belt 106.
[0044]
The hoop 104 is formed by laminating 9 to 12 layers of rings as shown in FIGS. 2 and 4 (however, in FIGS. 2 and 4, the rings are represented as 3 layers instead of 9 to 12 layers). In this case, the lower layer ring has a shorter circumference, and the upper layer ring has a longer circumference.
[0045]
As shown in FIGS. 2 and 3, the endless metal belt 106 is manufactured by combining a hoop 104 with a large number of elements 102. The dimples 122 and the holes 123 are fitted between a predetermined number (for example, 400) of elements combined with the hoop 104.
[0046]
If the positions of the dimples 122 and the holes 123 of the element 102 are not accurate, the relative positions of a large number of elements are incorrect, and the endless metal belt 106 tends to meander. When the endless metal belt 106 runs while being wound around the input side pulley 220 and the output side pulley 320, slippage between the input side pulley 220 and the output side pulley 320 and the element 102 occurs, energy loss occurs, and transmission efficiency increases. Decreases.
[0047]
With reference to FIG. 6, a schematic configuration of the element measuring device according to the present embodiment will be described. FIG. 6 is a perspective view showing the relationship between element measuring apparatus 1000 and element 102 according to the present embodiment so as to be clear.
[0048]
As illustrated in FIG. 6, the element measuring apparatus 1000 includes a Z-direction reference surface 1500 also serving as a mounting table on which the element 102 is mounted, an X-direction reference surface 1300, a Y-direction reference surface 1400, and a side surface of the element 102. It includes a side surface pressing jig 1310 for pressing in the X direction and a side surface pressing actuator 1320 for driving the side surface pressing jig 1310. Further, a dimple-side probe 1100 provided with a concave portion so as to fit into the dimple 122 of the element 102, and a hole-side probe 1200 provided with a convex portion so as to fit into the hole 123 of the element 102, With the element 102 placed at the reference position interposed therebetween, the displacement amounts of the dimple-side probe 1100 and the hole-side probe 1200 in the X, Y, and Z directions shown in FIG. 6 are measured.
[0049]
As shown in FIG. 5, the dimple 122 and the hole 123 have a tapered surface. On the other hand, as shown in FIG. 6, the dimple-side probe 1100 has a concave portion having a vertical surface. Further, the hole side gauge 1200 has a convex portion having a vertical surface. Since the dimple 122 and the hole 123 each have a tapered surface, and the dimple-side probe 1100 and the hole-side probe 1200 have vertical surfaces, the respective probes (the dimple-side probe 1100 and the hole-side probe 1200) are The position of the dimple 122 in the element 102 that advances in the Z direction along the tapered surface of the dimple 122 and the hole 123 and is placed at the reference position by the X-direction reference surface 1300, the Y-direction reference surface 1500, and the Z-direction reference surface 1500, respectively. And the position of the hole 123 can be measured.
[0050]
In this case, it is necessary to accurately measure the dimensional error of the element 102 in the X direction. This is because if the dimension of the element 102 in the X direction includes an error, the positions of the dimples 122 and the holes 123 are not correctly measured even if the positions of the dimples 122 and the holes 123 are accurate.
[0051]
For this reason, the element 102 mounted on the Z-direction reference surface 1500 which is an element mounting table is pressed in the X direction using the side surface pressing jig 1310 and the side surface pressing actuator 1320, and the element 102 is moved to the reference position. Then, the amount of movement of the side surface pressing jig 1310 from the reference position is measured. A correction value for correcting the measured position of the dimple 122 and the position of the hole 123 is calculated based on the measured movement amount of the side surface pressing jig 1310.
[0052]
FIG. 7 shows a side view of the element measuring device 1000 as viewed from the direction of arrow A in FIG.
[0053]
As shown in FIG. 7, in addition to the configuration described with reference to FIG. 6, the element measuring device 1000 includes an element 1200 and a hole 1200 that move in the X direction and the Y direction. It has a structure that can be approached. In the dimple-side probe 1100, a head having a concave portion that fits into the dimple 122 of the element 102 is held by a dimple-side thrust bearing 1120. By the dimple-side thrust bearing 1120, the dimple-side probe 1100 is held so as to be movable in the X and Y directions in the drawing. In the hole side gauge 1200, a head having a protrusion fitted into the hole 123 of the element 102 is held by a hole side thrust bearing 1220. The hole side gauge 1200 is held by the hole side thrust bearing 1220 so as to be movable in the X and Y directions in the drawing.
[0054]
In the element measuring device 1000, the displacement amount of the dimple side probe 1100 in the X direction is measured by the dimple side X direction displacement amount measuring unit 1110, and the Z direction displacement amount is measured by the dimple side Z direction displacement amount measuring unit 1130. . In FIG. 7, since the Y direction is a direction perpendicular to the paper surface, the dimple-side Y-direction displacement measuring section is not shown.
[0055]
In the element measuring device 1000, the displacement amount of the hole side gauge 1200 in the X direction is measured by the hole side X direction displacement amount measuring unit 1210, and the displacement amount in the Z direction is measured by the hole side Z direction displacement amount measuring unit 1230. . Also on the hole side, similarly to the dimple side described above, since the Y direction is a direction perpendicular to the paper surface of FIG. 7, the hole side Y direction displacement amount measurement unit is not shown.
[0056]
The measurement sensor that measures the amount of displacement in each of the dimple side and the hole side in the X direction, the Y direction, and the Z direction is not particularly limited, and may be, for example, a differential pressure transducer. These sensors are connected to a control unit, and the control unit executes processing of the measurement data. Note that this control unit may be a general computer. The control unit will be described as controlling not only the processing of the measurement data but also the entire operation of the element measurement apparatus 1000.
[0057]
As shown in FIGS. 6 and 7, the element 102 is configured such that the X-direction reference surface 1300 and the side surface abut, and the Y-direction reference surface 1400 and the saddle surface 120 abut, thereby forming the Z-direction reference surface 1500. 4 or 3 of the base portion 114 of the element 102 abuts on the reference position.
[0058]
Referring to FIG. 8, a flowchart of a process executed in element measuring apparatus 1000 according to the present embodiment will be described.
[0059]
In step (hereinafter, step is abbreviated as S) 100, the control unit of element measuring apparatus 1000 reads master data from the storage unit. The master data stores values obtained by precisely measuring the shape of an element 102 that is a master that has been accurately manufactured in advance and that is precisely measured by another three-dimensional measuring device. Before executing the process of S100, in addition to the preparation of the master data, the element 102 serving as a master is set in the element measuring apparatus 1000, and the amount of movement of the dimple-side tracing 1100 and the hole-side tracing 1200 is calculated. Based on this, master matching for correcting a deviation of the movement amount from master data is performed.
[0060]
In S110, the control unit determines whether an element set signal has been detected. This element set signal is input, for example, by an operator operating this element measuring apparatus 1000. The element set signal is based on information input by the operator after the operator places the element 102 at a predetermined position, that is, at a predetermined position of the element mounting table that is the Z-direction reference plane 1500. Based signal. If the input of the element set signal is detected (YES in S110), the process proceeds to S120. If not (NO in S110), the process returns to S110, and waits until an element set signal is detected.
[0061]
In S120, the control unit instructs movement of side surface pressing actuator 1320. In S130, the control unit detects the amount of movement of side surface pressing actuator 1320. In S140, the control unit calculates an X-direction correction value based on the movement amount of side surface pressing actuator 1320.
[0062]
In S150, the control unit instructs movement of dimple side tracing stylus 1100 and hole side tracing 1200. According to this instruction, the dimple-side probe 1100 and the hole-side probe 1210 move in the Z direction while moving in the X-direction and the Y-direction. Are fitted into the holes 123, respectively. When the movement of dimple side gauge 1100 and hole side gauge 1200 is completed (YES in S160), the process proceeds to S170. If not (NO in S160), the process returns to S160, and waits until the movement of dimple-side tracing stylus 1100 and hole-side tracing 1200 is completed. The completion of the movement of the dimple-side tracing stylus 1100 and the hole-side tracing 1200 is determined by, for example, time.
[0063]
In S170, the control unit detects the amount of movement (X (1), Y (1), and Z (1)) of dimple-side probe 1100. The amount of movement of the dimple-side probe 1100 is detected by data input to the control unit from the dimple-side X-direction displacement measurement unit 1110, the dimple-side Y-direction displacement measurement unit 1130, and the dimple-side Z-direction displacement measurement unit 1130. Is done.
[0064]
In S180, the control unit detects the amount of movement (X (2), Y (2), and Z (2)) of hole side gauge 1200. The movement amount of the hole side gauge 1200 is also controlled by the hole side X direction displacement amount measurement unit 1210, the hole side Y direction displacement amount measurement unit, and the hole side Z direction displacement amount measurement unit 1230, similarly to the processing in S170 described above. It is detected by data input to the unit.
[0065]
In S190, the control unit corrects movement amounts X (1) and X (2). At this time, for example, the movement amount of the side surface pressing actuator 1320 detected in S130 is 40 microns from the reference position, and the movement amounts of the movement amounts X (1) and X (2) from the reference position are 20 microns. If the width of the element 102 is 40 microns larger, even if the positions of the dimple 122 and the hole 123 are correct depending on the width, the measured position of the dimple 122 and the position of the hole 123 are: It will be shifted by 20 microns. Therefore, the movement amounts X (1) and X (2) are corrected in consideration of the 20 microns. In such a case, if the movement amount of the side surface pressing actuator 1320 is 40 microns and the movement amounts X (1) and X (2) are 20 microns, the actual positions of the dimples 122 and the positions of the holes 123 are determined. The deviation is zero.
[0066]
In S200, the control unit calculates dimple depth H (1) based on movement amount Z (1) and hole depth H (2) based on movement amount Z (2). In S210, the control unit compares the master data with the measurement data. In S220, the control unit determines whether all the measurement data is within the allowable range. If all the measured data are within the allowable range (YES in S220), the process proceeds to S230. Otherwise (NO at S220), the process proceeds to S240.
[0067]
In S230, the control unit performs a non-defective product determination process. At S240, the control unit performs a defective product determination process. In this defective product determination process, for example, measurement data of an element determined as a defective product may be stored, and the tendency of the measurement data of the defective product may be analyzed.
[0068]
The operation of element measuring apparatus 1000 according to the present embodiment based on the above structure and flowchart will be described.
[0069]
The element 102 is mounted on a predetermined position of the element mounting table, which is the Z-direction reference plane 1500 of the element measuring apparatus 1000, and the operator presses an element set button, so that the control unit detects an element set signal (S110). YES). Movement of the side surface pressing actuator 1320 is instructed (S120), and the side surface of the element 102 opposite to the X direction reference surface 1300 is pressed by the side surface pressing jig 1310, and the element 102 is pressed against the X direction reference surface 1300. .
[0070]
The control unit detects the amount of movement of the side surface pressing actuator 1320 (S130), and calculates the X direction correction value based on the amount of movement of the side surface pressing actuator 1320 (S140). In this way, after the element 102 is placed at the predetermined position of the element measuring device 1000, the dimple-side tracing stylus 1100 and the hole-side tracing 1200 move with time in the Z direction.
[0071]
When the movement of dimple side gauge 1100 and hole side gauge 1200 is completed (YES in S160), the movement amounts (X (1), Y (1) and Z (1)) of dimple side gauge 1100 are detected. (S170), the movement amounts (X (2), Y (2) and Z (2)) of the hole side gauge 1200 are detected (S180).
[0072]
The control unit corrects the movement amounts X (1) and X (2) in consideration of an error in the size of the element 102 in the X direction calculated based on the movement amount of the side surface pressing actuator 1320 ( S190). The control unit calculates the dimple height H (1) based on the movement amount Z (1) and the hole depth H (2) based on the movement amount Z (2) (S200).
[0073]
In this way, the measured measurement data is compared with the read master data (S210), and if all the measurement data are within the allowable range (YES in S220), the non-defective product determination process is executed ( S230).
[0074]
As described above, according to the element measuring device according to the present embodiment, the dimple-side and hole-side probes fitted to the dimples and holes of the element, respectively, are overlapped in time (may be simultaneous). The elements are brought close to each other from the front and back, and fitted together. A three-dimensional measurement is performed at the fitted position to measure the position of the dimple and the hole and the height of the dimple or the depth of the hole. Conventionally, a plurality of representative points were measured separately for the element in the front direction and the back direction, however, according to the element measuring apparatus according to the present embodiment, the dimples are dramatically increased at high speed and accurately. In addition, the position of the hole, the height of the dimple, and the depth of the hole can be measured at one time.
[0075]
The embodiments disclosed this time are to be considered in all respects as illustrative and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.
[Brief description of the drawings]
FIG. 1 is a sectional view of a belt-type continuously variable transmission using an endless metal belt according to an embodiment of the present invention.
FIG. 2 is a partial perspective view illustrating an endless metal belt.
FIG. 3 is a perspective view illustrating an entire configuration of an endless metal belt.
FIG. 4 is a front view of the element.
FIG. 5 is a side view of the element.
FIG. 6 is a schematic configuration diagram of an element measuring device.
FIG. 7 is a configuration diagram of an element measuring device.
FIG. 8 is a flowchart showing a control structure of a program executed by the element measuring device.
[Explanation of symbols]
100 continuously variable transmission, 102 elements, 104 hoop, 106 endless metal belt, 108 sheave, 110 sheave surface, 112 friction against sheave surface, 114 base part, 116 neck, 118 top, 120 saddle surface, 122 dimple, 123 hole, 124 Inclined surface, 200 input shaft, 220 input pulley, 300 output shaft, 320 output pulley, 1000 element measuring device, 1100 dimple side gauge, 1110 dimple side X-direction displacement measuring unit, 1120 dimple side thrust bearing, 1130 Dimple side Z direction displacement measurement section, 1200 hole side gauge, 1210 hole side X direction displacement measurement section, 1220 hole side thrust bearing, 1230 hole side Z direction displacement measurement section, 1300 X direction reference plane, 1310 side surface Pressing cure , 1320 side surface pressing actuators, 1400 Y direction reference plane, 1500 Z direction reference surface (element mounting table).

Claims (12)

A device for measuring a shape of an element used for an endless metal belt configured by stacking a plurality of elements by fitting a convex portion and a concave portion provided on each of the front and back sides of the element and passing them through an annular hoop. And
Holding means for holding the element at a reference position,
First moving means for three-dimensionally moving the first tracing stylus so as to fit a first tracing stylus having a recess to the projection of the element held at the reference position;
Second moving means for three-dimensionally moving the second tracing stylus such that a second tracing stylus having a projection is fitted into the recess of the element held at the reference position;
An endless metal belt element measuring device, comprising: detecting means for detecting three-dimensional data for each of the position of the first probe and the position of the second probe. The first moving means includes means for moving the first probe in a direction perpendicular to the two-dimensional plane while allowing the first probe to move on the two-dimensional plane,
2. The endless metal according to claim 1, wherein the second moving unit includes a unit that moves the second probe in a direction perpendicular to the two-dimensional plane while allowing the second probe to move on the two-dimensional plane. 3. Measuring device for belt elements. The holding means is a contact means for contacting a reference surface of the element, and a pressing means provided at a position facing the contact means, for pressing the reference surface of the element against the contact means. The device for measuring an element for an endless metal belt according to claim 1 or 2, comprising: The measuring apparatus further includes a measuring unit for measuring a displacement amount of the pressing unit,
The detecting means corrects the detected positions of the first and second tracing elements based on the measured amount of displacement, and adjusts the positions of the first and second tracing elements. The device for measuring an element for an endless metal belt according to any one of claims 1 to 3, further comprising a unit for detecting the endless metal belt. The measuring device comprises:
Storage means for previously storing reference data serving as a reference,
The apparatus further includes: a determination unit configured to determine the acceptability of the element based on the positions of the first and second tracings detected by the detection unit and the stored reference data. Item 5. An endless metal belt element measuring device according to any one of Items 1 to 4. The measurement device is configured to perform the first movement of the first tracing element by the first movement means and the movement of the second tracing element by the second movement means in a temporally overlapped manner. The device for measuring an element for an endless metal belt according to any one of claims 1 to 5, further comprising a control means for controlling the moving means and the second moving means. A method for measuring a shape of an element used for an endless metal belt configured by stacking a plurality of elements by fitting a convex portion and a concave portion provided on each of the front and back surfaces of the element and passing them through an annular hoop. And
A holding step of holding the element at a reference position,
A first moving step of three-dimensionally moving the first tracing stylus so as to fit a first tracing stylus having a recess to the projection of the element held at the reference position;
A second movement step of three-dimensionally moving the second tracing stylus such that a second tracing stylus having a projection is fitted into the recess of the element held at the reference position;
A step of detecting three-dimensional data for each of the position of the first tracing stylus and the position of the second tracing stylus. The first moving step includes a step of moving the first probe in a direction perpendicular to the two-dimensional plane while allowing the first probe to move on the two-dimensional plane,
The endless metal belt according to claim 7, wherein the second moving step includes a step of moving the second probe in a direction perpendicular to the two-dimensional plane while allowing the second gauge to move on the two-dimensional plane. Element measurement method. The holding step includes a step of contacting a reference surface of the element with a contact surface, and a step of pressing the reference surface of the element against the contact surface, which is provided at a position facing the contact surface. The method for measuring an element for an endless metal belt according to claim 7. The measuring method further includes a measuring step of measuring a displacement amount when pressed against the contact surface,
The detecting step corrects the detected positions of the first and second tracing elements based on the measured displacement amount, and adjusts the positions of the first and second tracing elements. The method for measuring an element for an endless metal belt according to any one of claims 7 to 9, further comprising the step of detecting The measuring method includes:
11. The method according to claim 7, further comprising: determining a quality of the element based on the detected positions of the first and second tracing elements and reference data prepared in advance. The method for measuring an endless metal belt element according to any one of the above. The measurement method may be configured such that the movement of the first tracing stylus in the first movement step and the movement of the second trajectory in the second movement step are temporally superimposed and executed. The method for measuring an element for an endless metal belt according to any one of claims 7 to 11, further comprising a control step of controlling the moving step and the second moving step.

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