JP2005181081A - Test equipment and inspection method of element for metal belt - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an art capable of synthetic inspection of an element for metal belt, with an easy test equipment. <P>SOLUTION: The test equipment 10 of an element for metal belt is provided with a needle-shaped probe 11 which contacts an object to be examined and detects the three-dimensional position of a contact part, and a supporting structure 20 holding an element 103 for metal belt as an object to be examined. And the test equipment, which can inspect the outline shape of the element 103, the width and angle of an abutting edge, the height of a projecting part, the depth of a recess, a diameter and a center gap, comprises the needle-shaped probe 11, a standing-up wall 22 arranged oppositely against the needle-shaped probe, an inspection hole 26 opened in the standing-up wall 22, and an element fitting plate 24 which is nearly covering the inspection hole 26 along with the standing-up wall 22 and holding down the element 103. Since the equipment structure is simple, the test equipment cost can be reduced. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an inspection technique for a metal belt element.

  A belt-type transmission that combines a V-belt and a variable width pulley is known. In recent years, a metal belt type transmission having improved transmission capability by replacing the V belt with a metal belt has attracted attention.

  FIG. 10 is a schematic diagram of a metal belt. A metal belt 100 includes elements 103... (... a plurality of elements) between left and right steel belts (exactly belts in which thin metal bands are laminated) 101 and 102. The same shall apply hereinafter, so that it can be moved back and forth slightly.

  FIG. 11 is a diagram showing the relationship between the variable width pulley and the metal belt. The metal belt 100 is fitted between the fixed pulley 104 and the movable pulley 105 constituting the variable width pulley, and the movable pulley 105 is moved to the left in the figure. Then, the metal belt 100 rises. The element 103 includes contact sides 106 and 107 that are in close contact with the pulleys 104 and 105. These contact sides 106 and 107 are V-shaped.

  It is important that the contact sides 106, 107 have an accurate V shape. As shown in FIG. 10, since a large number of elements 103 are stacked, there is a dimensional difference between the elements 103..., Especially when the contact sides 106 and 107 have variations in angles and dimensions. There is an element 103 that does not come into contact with 104 and 105, and a predetermined transmission capability cannot be obtained. Therefore, it is necessary to strictly inspect the dimensional accuracy of the element 103.

Conventionally, inspection devices for metal belt elements have been proposed. (For example, refer to Patent Document 1).
JP-A-60-55203 (FIG. 10)

Patent document 1 is demonstrated based on the following figure.
FIG. 12 is a diagram for explaining the basic principle of the prior art. The inspection apparatus 110 includes a receiving block 112 having a Mt. Fuji recessed portion 111, a moving block 113 disposed opposite to the receiving block 112, and the moving block 113. A dial gauge 114 for detecting the amount of movement, left and right contacts 115, 116, and left and right dial gauges 117, 118 for detecting the displacement amount of these contacts 115, 116.

Then, the reference element 103A as a reference is set as shown in the figure, and the numerical values in the reference element 103A are detected by the dial gauges 114, 117, and 118.
Next, the reference element 103A is replaced with an inspection object (element 103), and the dial gauges 114, 117, and 118 detect numerical values in the element 103.
The numerical value of the element 103 to be inspected is compared with the numerical value of the reference element 103A to evaluate the dimensional accuracy of the element 103 to be inspected.

  FIG. 13 is a front view of a typical metal belt element. The element 103 includes a trapezoidal trunk portion 120 having contact sides 106 and 107 on the left and right sides, and a neck portion 121 extending upward from the trunk portion 120. , A thin metal plate having a triangular head 122 connected by the neck 121.

The contact sides 106 and 107 are formed as a sawtooth portion 125 in which a top portion 123 and a trough portion 124 are continuous in order to improve contact performance.
If the tops 123 are not uniform, the predetermined contact performance cannot be obtained. Therefore, the dimensional inspection of the top parts 123 is also important.

FIG. 14 is a cross-sectional view of a typical element for a metal belt, which includes a convex portion 127 that protrudes in a nose shape on one surface of the head 122, and a hole-like shape on the other surface of the head 122. A recess 128 is provided. Adjacent elements 103 can be connected by always loosely fitting the convex portion 127 to the concave portion 128.
One surface of the head 122 is referred to as a nose surface 131, and the other surface is referred to as a hole surface 132.

  When the convex portion 127 is fitted into the concave portion 128, if the fitting is too loose, the adjacent elements 103 and 103 are relatively laterally displaced, and if the fitting is too tight, the adjacent elements 103 and 103 are smooth. Connection is lost. Therefore, the dimension inspection of the concave portion 128 and the convex portion 127 is also important.

However, with the technique of Patent Document 1 described in FIG. 12, the dimensional inspection of the sawtooth portion 125, the convex portion 127, and the concave portion 128 cannot be performed.
Therefore, a comprehensive inspection technique including inspection of the sawtooth portion 125, the convex portion 127, and the concave portion 128 is required for the inspection of the contact sides 106 and 107.

  Moreover, the technique of Patent Document 1 requires a large inspection apparatus, and simplification of the inspection apparatus is required.

  An object of the present invention is to provide a technique capable of performing a comprehensive inspection of metal belt elements with a simple inspection device.

  An inspection apparatus according to claim 1 is a needle-like probe that detects a three-dimensional position of a contact portion by contacting a metal belt element having one surface being a nose surface and the other surface being a hole surface. An upright wall disposed opposite the deep contact element, an inspection hole opened in the upright wall, and an element restraining plate that holds the element along the upright wall so as to cover the inspection hole. The probe is configured to contact through the inspection hole.

According to a second aspect of the present invention, there is provided a needle-like probe for detecting a three-dimensional position of a contact portion using a metal belt element having one surface as a nose surface and the other surface as a hole surface as an inspection object. An inspection method to be performed using
By locating the probe on the element, the xyz axis as a measurement reference is determined, and the probe is moved around the element to measure the outline of the element, and the probe is placed on the contact side of the element. Measure the width and angle of the contact side by touching, measure the height, diameter, and center deviation of the convex part by applying the probe to the convex part of the element, and apply the probe to the concave part of the element By measuring the depth, diameter, and center deviation of the recess, and comparing the acceptance criteria stored in advance with various measured values, the pass / fail of the contour shape, the width of the contact side, the pass / fail of the angle, the height of the convex portion It is characterized in that the pass / fail of the center deviation, the depth, the diameter, and the center deviation of the recess are checked.

  In the inspection method according to claim 3, the contact side includes a sawtooth portion in which a top portion and a trough portion are continuous, and the contact side is measured by applying a probe at a right angle to the top portion. .

  In the invention according to claim 1, an inspection device capable of inspecting the contour shape of the element, the width and angle of the contact side, the height of the convex part, the diameter and the center deviation, the depth of the concave part, the diameter and the center deviation, Needle-shaped probe, standing wall facing this deep sensor, inspection hole opened in this standing wall, and element restraining plate that suppresses elements along the standing wall so as to cover this inspection hole And composed. Since the apparatus configuration is simple, the inspection apparatus cost can be reduced.

  In the invention according to claim 2, by adopting the probe, the contour shape of the element, the width and angle of the contact side, the height of the convex part, the diameter and the center deviation, the depth of the concave part, the diameter and the center deviation are obtained. Can be inspected. Therefore, according to the present invention, it is possible to comprehensively inspect the metal belt element.

  In the invention according to claim 3, when the contact side is a sawtooth portion, the probe is applied at a right angle to the top portion. By applying the probe to the top at a right angle, the probe can be prevented from slipping from the top, and a decrease in measurement accuracy can be prevented.

The best mode for carrying out the present invention will be described below with reference to the accompanying drawings. The drawings are viewed in the direction of the reference numerals.
FIG. 1 is a cross-sectional view of a metal belt element inspection apparatus according to the present invention. A metal belt element inspection apparatus 10 contacts a test object and detects a three-dimensional position of a contact portion. It comprises a probe 11 and an element holding device 20 for holding a metal belt element 103 as an inspection object. The detailed shape of the metal belt element 103 is as described with reference to FIGS. 13 and 14, and the reference numerals in FIG.

  The element holding device 20 defines a horizontal base 21, a standing wall 22 raised from the base 21, an element restraining plate 24 fixed to the standing wall 22 with bolts 23, and a position of the element restraining plate 24. For this purpose, the positioning pin 25 extends from the upright wall 22.

  FIG. 2 is an exploded view of the metal belt element inspection apparatus according to the present invention, in which an upper part of the standing wall 22 is provided with a large-diameter daruma-shaped inspection hole 26 and left and right round inspection holes 27, 27. Left and right positioning pins 25 and 25 are erected at the center of the standing wall 22, and a screw hole 28 is provided at the lower part of the standing wall 22. The screw hole 28 is a hole having a female screw portion corresponding to the bolt 23.

  The element holding plate 24 includes a V-shaped recess 29 for accommodating the element 103 in the upper part, pin holes 31 and 31 in the center, and a bolt hole 32 in the lower part. The pin hole 31 is a hole opened with a slight clearance in the outer diameter of the pin 25 and is generally finished with a reamer. On the other hand, the bolt hole 32 is a hole obtained by adding a large clearance (1 to 2 mm) to the nominal diameter of the bolt 23. Positioning is performed with pins 25 and fixing is performed with bolts 23.

First, the element holding plate 24 is applied to the upright wall 22 while fitting the pin holes 31, 31 to the positioning pins 25, 25, and the bolt 23 is lightly screwed into the screw hole 28 via the bolt hole 32.
Next, the element 103 is inserted between the upright wall 22 and the element holding plate 24 in the manner of inserting the element 103 into the V-shaped recess 29. Subsequently, the bolt 23 is finally tightened. This completes FIG.
Thereafter, if the bolt 23 is loosened, the element 103 is replaced, and the bolt 23 is tightened, a large number of elements 103 can be sequentially inspected.

  An element inspection method performed using the inspection apparatus having the above configuration will be described. In the following drawings, the probe 11 is indicated by a black circle, a double circle, and a medium black double circle, but all of them are the same, and there is no particular meaning to the difference in symbols.

FIG. 3 is an explanatory diagram of the reference determination step.
The element 103 is only fitted in the V-shaped concave portion 29 of the element holding plate 24 and may slightly rotate with respect to the V-shaped concave portion 29, so that the positional accuracy cannot be expected. For this purpose, the following procedures will be implemented.

  In (a), the x and y coordinates of the points P1 and P2 are read by applying the probe 11 to the left and right of the neck portion 121 of the element 103. Further, the x and y coordinates of the points P3 and P4 are read by applying the probe 11 to the left and right shoulders 122a and 122b of the body portion 120 of the element 103.

For example, a line passing through the points P3 and P4 is regarded as a line parallel to the x-axis, and a line perpendicular to the line parallel to the x-axis and a line passing through the midpoint between the points P1 and P2 is defined as the y-axis. Is considered.
Thus, the xy axis of the element 103 to be inspected can be determined.

  In (c), the probe 11 is brought into contact with the nose surface 131. The contact locations are three points P5, P6, and P7 that surround the convex portion 127 as shown in FIG. A plane passing through these three points is defined as a z plane, and an axis passing through the z plane and passing through the intersection of the xy axes is regarded as z.

  From the above (a) to (c), the xyz axis of the element 103 to be inspected can be determined. Thereby, it can be said that the reference | standard of the measured value calculated | required after that was decided. Therefore, it can be said that FIG. 3 is an explanatory diagram of the reference determination step.

  FIG. 4 is an explanatory diagram of the contour inspection process, and the contour of the element 103 is measured by moving the probe 11 along. By comparing this measured value with the reference data, the quality of the contour can be examined. Since the left and right contact sides 106 and 107 are important in the outline, the inspection is performed as follows.

FIG. 5 is an explanatory diagram of the contact side inspection step.
In (a), when the xy coordinate of the third top portion 123 from the upper left is measured, it is assumed that the height from the line 33 parallel to the x axis is y1. Next, when measuring the xy coordinate of the third top portion 123 from the upper right, the probe 11 is placed at a height position y1 from the line 33 parallel to the x axis, and measurement is started. That is, the left and right tops 123 having the same number measure the x coordinate with the same y coordinate. The same applies to the tops of the first, second, and fourth from the top.

  As shown in (b), the probe 11 is pressed against the top 123 along a line 34 perpendicular to the top 123. This is because if the probe 11 is pressed parallel to the x-axis, the probe 11 slips along the top portion 123, and the measurement accuracy may be lowered.

FIG. 6 is an explanatory diagram of the convex portion inspection process.
In (a), the probe 11 is brought into contact with the tip surface of the convex portion 127. Thus, the height h1 of the convex portion 127 from the nose surface 131 can be obtained.
Next, in (b), the probe 11 is circulated around the outer periphery of the convex portion 127. Thus, the diameter D1 of the convex portion 127 and the center C1 of the convex portion 127 can be obtained. Then, it is calculated that the center C1 of the convex portion is deviated by δx and δy along the xy axis with respect to the reference center C2, and it is checked whether or not these deviations δx and δy are within an allowable value.

  Up to now, the probe 11 has been on the nose surface 131 side of the element 103, but next, the probe 11 is moved to the hole surface 132 side.

FIG. 7 is an explanatory diagram of the recess inspection process.
At (a), the probe 11 is brought into contact with the general surface of the hole surface 132 through the inspection hole 27. The inspection hole 27 is a round hole (see FIG. 2) and faces the right part or the left part of the head 122 of the element 103 shown in FIG. The finishing accuracy of the right part or the left part of the head part 122 of the element 103 is better than other parts. For this purpose, the general surface is measured through the inspection hole 27.

  Next, the probe 11 is brought into contact with the bottom of the recess 128 through the inspection hole 26. By obtaining the difference from the general surface, the depth h2 of the recess 128 can be obtained.

  Next, in (b), the probe 11 is circulated around the inner periphery of the recess 128. Thus, the diameter D2 of the recess 128 and the center C3 of the recess 128 can be obtained. Then, it is calculated that the center C3 of the recess is displaced by Δx and Δy along the xy axis with respect to the reference center C4, and it is checked whether or not these deviations Δx and Δy are within an allowable value.

The inspection methods described above are summarized in the flow chart below.
FIG. 8 is an inspection flow diagram of an element according to the present invention. STxx indicates a step number.
ST01: An element is set in the inspection apparatus (see FIG. 1).
ST02: The xyz axis is determined by applying a probe to the element.
ST03: The contour of the element is measured by circulating a probe around the element.

ST04: The width and angle of the contact side are measured by applying a probe to the contact side of the element.
ST05: The height, diameter, and center deviation of the convex portion are measured by applying a probe to the convex portion of the element.
ST06: A probe is applied to the concave portion of the element to measure the depth, diameter, and center deviation of the concave portion.

ST07: The acceptance criteria stored in advance and various measured values are compared, the outline shape is accepted, the width of the contact side, the angle is accepted, the height of the convex part, the diameter, the center deviation is accepted, the depth of the concave part, The pass / fail of the diameter and the center deviation is checked, and if all pass, it is determined as “pass”, and if one fails, it is determined as “fail”.

  The inspection flow described above is a preferred example, and the order of the steps may be changed.

FIG. 9 is a front view of an element holding device capable of inspecting a large number of elements. The element holding device 20B has six element holding plates 24... Arranged on one horizontal standing wall 22 at a time. This is an apparatus that can set six elements 103.
Since the probe can be moved at a high speed, the attachment / detachment of the elements 103. If six elements 103... Can be set at a time, the inspection work can be made more efficient.

  Further, by setting the elements 103... In the inspection apparatus 20B in advance outside the inspection line, preparing a large number of such element holding apparatuses 20B and sequentially facing the probe 11, the efficiency of further inspection work is increased. Can be achieved.

  In addition, although the standing wall of Claim 1 is arrange | positioned perpendicularly in principle, it can arrange | position diagonally or horizontally. That is, the posture and orientation can be freely set as long as the standing wall can be disposed opposite the probe.

  In addition, in the method of claim 2, the element as the object to be inspected is not only along the standing wall as in the embodiment, but also one end is fixed and the other end is extended to a space like a cantilever, or both ends are gripped. Thus, it is possible to secure an inspection area between the gripping points. That is, if the contact part, outline, convex part, concave part, and sawtooth part of the element can be measured, the gripping and holding method can be freely selected.

  The present invention is suitable for a metal belt element inspection apparatus and method.

It is sectional drawing of the inspection apparatus of the element for metal belts which concerns on this invention. It is an exploded view of the inspection apparatus of the element for metal belts concerning this invention. It is explanatory drawing of a reference | standard determination process. It is explanatory drawing of an outline inspection process. It is explanatory drawing of a contact side test process. It is explanatory drawing of a convex part test | inspection process. It is explanatory drawing of a recessed part test process. It is an inspection flow figure of an element concerning the present invention. It is a front view of the element holding | maintenance apparatus which can test | inspect many elements. It is a schematic diagram of a metal belt. It is a figure which shows the relationship between a variable width pulley and a metal belt. It is a figure explaining the basic principle of the prior art. It is a front view of the element for typical metal belts. It is sectional drawing of the element for typical metal belts.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Inspection apparatus of metal belt elements, 11 ... Probe, 20, 20B ... Element holding device, 22 ... Standing wall, 24 ... Element holding plate, 15 ... Positioning pin, 26 ... Daruma-shaped inspection hole, 34 ... Contact A line perpendicular to the side, 103 ... element (element for metal belt), 106, 107 ... contact side of the element, 123 ... top part at the contact side, 124 ... valley part at the contact side, 125 ... sawtooth part at the contact side, 127 ... Element convex portion, 128... Element concave portion, 131. Element nose surface, 132. Element hole surface.

Claims (3)

  A needle-like probe that detects the three-dimensional position of the contact portion by contacting a metal belt element, one of which is a nose surface and the other surface is a hole surface, and an upright wall disposed opposite to this deep touch element And an inspection hole opened in the standing wall and an element restraining plate that holds the element along the standing wall so as to cover the inspection hole, and the hole surface contacts the probe through the inspection hole. An apparatus for inspecting an element for a metal belt, wherein An inspection method is carried out using a needle-like probe for detecting a three-dimensional position of a contact part, using a metal belt element whose one surface is a nose surface and the other surface is a hole surface as an inspection object. ,
By locating the probe on the element, the xyz axis as a measurement reference is determined, and the probe is moved around the element to measure the outline of the element, and the probe is placed on the contact side of the element. Measure the width and angle of the contact side by touching, measure the height, diameter, and center deviation of the convex part by applying the probe to the convex part of the element, and apply the probe to the concave part of the element By measuring the depth, diameter, and center deviation of the recess, and comparing the acceptance criteria stored in advance with various measured values, the pass / fail of the contour shape, the width of the contact side, the pass / fail of the angle, the height of the convex portion A method for inspecting a metal belt element, comprising: checking the pass / fail of the height, the diameter, the center deviation, the depth, the diameter, and the pass / fail of the center deviation. 3. The metal belt according to claim 2, wherein the contact side includes a sawtooth portion in which a top portion and a trough portion are continuous, and the contact side is measured by applying a probe at a right angle to the top portion. Element inspection method.

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