JP2006095582A - Peripheral length correcting device, peripheral length measuring device, and surface defect inspecting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To remove foreign matter adhered firmly to the surface of a roller. <P>SOLUTION: A peripheral length correcting device bridges a pair of a rotation driving-side roller and a rotation driven-side roller with a metal ring, gives a predetermined tension to the metal ring by adjusting the separating distance of the pair of rollers, and corrects the peripheral length of the metal ring by strengthening the tension while giving the tension. A peripheral length measuring device measures the separating distance and calculates the peripheral length of the metal ring based on the measured value. A surface defect inspecting device gives a predetermined tension to the metal ring by adjusting the separating distance and inspects existence of a surface defect of the metal ring while giving the tension. The peripheral length correcting device, the peripheral length measuring device, and the surface defect inspecting device are respectively provided with scrapers having a sharp edge brought into contact with the outer peripheral face of each of the paired rollers. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a metal ring circumference correction device, a circumference measurement device, and a surface defect inspection device, which are one of the components constituting a V-belt type continuously variable transmission belt (hereinafter referred to as “CVT belt”).

  2. Description of the Related Art Conventionally, a CVT belt having a structure in which a steel element is continuously fitted and integrated with a large number of thin metal rings having a thickness of about 0.2 mm is known (for example, (Refer nonpatent literature 1.).

  FIG. 5 is an external view of the CVT belt. In this figure, a CVT belt 1 is composed of a plurality of (for example, about 400) steel elements 3a on a double belt laminate 2 in which a large number (for example, about 12) of metal rings 2a are stacked. The element laminate 3 is assembled and assembled.

The CVT belt 1 having such a structure is manufactured by the following procedure.
(1) First, the ends of thin plates of super tough steel such as maraging steel are welded together to form a ring-shaped drum.
(2) Next, the drum is cut into a ring shape by a predetermined width and rolled to form a metal ring 2a having a basic circumference.
(3) Next, after the above-described metal ring 2a is subjected to a solution treatment or the like, a necessary circumference corresponding to the stacking place of the CVT belt 1 is given using a “perimeter correction device”. Here, the “peripheral length” refers to the ring length of the metal ring 2a, that is, the length of one round. The circumferential length of the metal ring 2a is slightly different depending on the position where the CVT belt 1 is laminated, and is slightly longer on the outermost circumferential side and slightly shorter on the innermost circumferential side.
(4) Next, using the “perimeter measuring device”, it is inspected whether an appropriate perimeter is given for each stacking place, and the “surface defect inspection device” is used to check the metal ring 2a. Inspect for surface defects.
(5) Finally, after the metal ring 2a having passed the inspection is subjected to aging treatment, nitriding treatment, etc. to increase the hardness, the metal rings 2a with appropriate perimeter differences are sequentially laminated for each layer, The CVT belt 1 is completed by fitting and integrating the element 3a into the laminate.

  Thus, the manufacture of the CVT belt 1 requires the above three devices (peripheral length correcting device, peripheral length measuring device, and surface defect inspection device). These devices may be a single device, or a device that also serves as part or all of circumference correction, circumference measurement, and surface defect inspection. This is common in that circumference correction, circumference measurement, or surface defect inspection is performed while rotating a roller while applying a necessary tension to the metal belt 2a.

  FIG. 6 is a conceptual diagram of the main parts of the circumference correction device, circumference measurement device, and surface defect inspection device. One of the pair of metallic rollers 4 and 5 arranged on the same plane with a predetermined separation distance L is a driving side rotating in a fixed direction, and the other is a driven side. By slightly increasing the separation distance L between the pair of rollers 4 and 5, a predetermined tension is applied to the metal ring 2a serving as a correction object or a measurement object or an inspection object that is stretched over the pair of rollers 4 and 5. (Tension) is applied.

  In such a configuration, by increasing the tension, the metal ring 2a can be stretched and the circumference thereof can be corrected (longer than the basic circumference). Alternatively, by measuring the separation distance L between the pair of rollers 4 and 5 when a predetermined tension is applied, the circumferential length of the metal ring 2a can be calculated from the measurement result. Furthermore, the presence or absence of surface defects can be inspected while observing the surface of the circulating metal ring 2a with a camera or the like.

  By the way, when the metal ring 2a is stretched over the pair of rollers 4 and 5 and is rotated while applying tension, the inner peripheral surface (contact surface with the rollers 4 and 5) of the metal ring 2a is damaged. There was a thing. One of the causes is due to foreign matters adhering to the surfaces of the rollers 4 and 5. Such foreign matters are, for example, processing residuals (metal powder or the like) of the metal ring 2 a, suspended matters in the air, or the metal ring 2 a. Trash on a belt conveyor for transporting. In order to prevent this, whether or not foreign matter has adhered to the surfaces of the rollers 4 and 5 has been confirmed by visual observation, but a great deal of labor has been required.

Tomohiro Miyaji “Extracting the Performance of the Ideal Transmission CVT”, [online], [Search August 25, 2002], Internet <URL: http://www.idemitsu.co.jp/lube /cvt/cvtbody2.html> (Figure 5)

  Furthermore, in order to remove the foreign matter adhering to the surfaces of the rollers 4 and 5, for example, a brush is brought into contact with the surfaces of the rollers 4 and 5, or the suction nozzle is brought close to the surfaces of the rollers 4 and 5 to suck up the foreign matters. Such a method is conceivable. However, although these methods can remove foreign matters that are lightly attached to the surfaces of the rollers 4 and 5, it is difficult to remove the foreign matters that are firmly attached, and the rollers 4 and 5 themselves must be replaced with new ones. I had to.

  Accordingly, the present invention provides a peripheral length correction device that enables removal of foreign matters firmly adhered to the surface of the roller, thereby avoiding damage to the inner peripheral surface (contact surface with the roller) of the metal ring, The object is to provide a circumference measuring device and a surface defect inspection device.

The circumferential length correction device according to the present invention is configured such that a metal ring is stretched between a pair of rollers on the rotational drive side and a driven side, and a distance between the pair of rollers is adjusted to give a predetermined tension to the metal ring. In the circumferential length correcting device for correcting the circumferential length of the metal ring by increasing the tension, a scraper having a cutting edge that contacts each outer circumferential surface of the pair of rollers is provided.
In a preferred embodiment, the scraper blade edge has an angle of 90 degrees or less with respect to a tangent to the outer peripheral surface of the roller.
Or the blade edge | tip of the said scraper has an angle of 90 degrees or less equally divided with respect to the perpendicular line of the outer peripheral surface of the said roller.
Or the blade edge | tip of the said scraper has an angle of 90 degree | times or 90 degree | times or more equally divided with respect to the perpendicular line of the outer peripheral surface of the said roller.
The circumferential length measuring device according to the present invention is configured such that a metal ring is stretched between a pair of rollers on the rotational drive side and a driven side, and a distance between the pair of rollers is adjusted to give a predetermined tension to the metal ring. In the circumference measuring apparatus for measuring a separation distance and calculating the circumference of the metal ring from the measured value, the scraper has a scraper having a blade edge that contacts each outer circumferential surface of the pair of rollers. .
In a preferred embodiment, the scraper blade edge has an angle of 90 degrees or less with respect to a tangent to the outer peripheral surface of the roller.
Or the blade edge | tip of the said scraper has an angle of 90 degrees or less equally divided with respect to the perpendicular line of the outer peripheral surface of the said roller.
Or the blade edge | tip of the said scraper has an angle of 90 degree | times or 90 degree | times or more equally divided with respect to the perpendicular line of the outer peripheral surface of the said roller.
In the surface defect inspection apparatus according to the present invention, a metal ring is stretched between a pair of rollers on the rotational drive side and a driven side, and a predetermined tension is applied to the metal ring by adjusting a separation distance between the pair of rollers. In the surface defect inspection apparatus for inspecting the presence or absence of a surface defect of the metal ring, a scraper having a blade edge that contacts each outer peripheral surface of the pair of rollers is provided.
In a preferred embodiment, the scraper blade edge has an angle of 90 degrees or less with respect to a tangent to the outer peripheral surface of the roller.
Or the blade edge | tip of the said scraper has an angle of 90 degrees or less equally divided with respect to the perpendicular line of the outer peripheral surface of the said roller.
Or the blade edge | tip of the said scraper has an angle of 90 degree | times or 90 degree | times or more equally divided with respect to the perpendicular line of the outer peripheral surface of the said roller.

According to the present invention, the metal ring is stretched between the pair of rollers on the rotation drive side and the driven side, and the tension is strengthened while adjusting a separation distance between the pair of rollers to give a predetermined tension to the metal ring. The circumference of the metal ring can be corrected by the above, or the metal ring is stretched between a pair of rollers on the rotational drive side and the driven side, and the separation distance between the pair of rollers is adjusted to give a predetermined amount to the metal ring. While applying tension, the separation distance can be measured, and the circumference of the metal ring can be calculated from the measured value, or the metal ring is passed over a pair of rollers on the rotational drive side and the driven side, In addition to being able to inspect for the presence or absence of surface defects of the metal ring while adjusting the separation distance of a pair of rollers and applying a predetermined tension to the metal ring,
Furthermore, because it has a scraper having a cutting edge that contacts the outer peripheral surface of each of the pair of rollers,
Even if foreign matters such as metal ring processing residuals (metal powder, etc.), airborne floating materials, or dust on a belt conveyor for transporting the metal ring are attached to the surface of the roller As the roller rotates, this foreign matter can be “scraped off” with the scraper blade edge. Therefore, the inner peripheral surface (contact surface with the roller) of the metal ring is not damaged.
Also, when the scraper blade edge has an angle of 90 degrees or less, the effect of removing foreign matter can be enhanced, while when the scraper has an angle of 90 degrees or 90 degrees or more, The wear of the cutting edge can be suppressed.
In addition, when the scraper blade edge has an angle equally divided with respect to the vertical line of the outer peripheral surface of the roller, a foreign matter removing effect can be obtained in either the forward or reverse direction of the roller. Can do.

  Embodiments of the present invention will be described below with reference to the drawings, taking a surface defect inspection apparatus as an example. It should be noted that the specific details or examples in the following description and the illustrations of numerical values, character strings, and other symbols are only for reference in order to clarify the idea of the present invention, and the present invention may be used in whole or in part. Obviously, the idea of the invention is not limited. In addition, a well-known technique, a well-known procedure, a well-known architecture, a well-known circuit configuration, and the like (hereinafter, “well-known matter”) are not described in detail, but this is also to simplify the description. Not all or part of the matter is intentionally excluded. Such well-known matters are known to those skilled in the art at the time of filing of the present invention, and are naturally included in the following description.

  FIG. 1 is a conceptual configuration diagram of a circumference correction apparatus, circumference measurement apparatus, or surface defect inspection apparatus (hereinafter referred to as “this apparatus”) in the embodiment. The apparatus 10 includes a fixed-position driving-side roller 12 that is rotationally driven by a motor 11, a position-variable driven-side roller 13 spaced apart on the same rotational plane as the roller 12, and a predetermined mass (for example, 80 kg), the load body 14 is configured to be included, but in addition to these, when the apparatus 10 is used as a circumference correction apparatus, the circumference correction unit 15 is included, and the apparatus 10 is used for circumference measurement. When used as an apparatus, it includes a circumference measuring unit 16, and when the apparatus 10 is used as a surface defect inspection apparatus, a defect inspection unit 17 is included.

  In such a configuration, first, the driven roller 13 is set to the initial position (the position indicated by the alternate long and short dash line a), the metal ring 2a is stretched between the rollers 12, 13, and then the load member 14 is applied to the driven roller 13. Is attached, and the roller 13 is moved downward in the drawing to give a required tension to the metal ring 2a. In this state, the metal ring 2a is rotated around the metal ring 2a in a certain direction (arrow B direction), and the metal ring 2a is rotated using the circumference correction unit 15, the circumference measurement unit 16, or the defect inspection unit 17. 2a circumference correction, circumference measurement or defect inspection is performed.

  Here, the circumferential length correcting unit 15 is for correcting the circumferential length of the metal ring 2a, that is, capable of increasing / decreasing the tension applied to the metal ring 2a. The function (peripheral length correction) is realized by variably controlling the amount. The circumference measuring unit 16 is for estimating and measuring the current circumference of the metal ring 2a from the amount of movement of the driven roller 13, and includes a linear sensor for measuring the amount of movement of the roller 13, for example. The function (peripheral length measurement) is realized. Further, the defect inspection unit 17 inspects the presence or absence of defects on the surface of the object (metal ring 2a) by an optical method such as image processing or laser light reflection processing or a magnetic method such as eddy current.

In the illustrated example, scrapers 18 and 19 are disposed on the rollers 12 and 13 as characteristic components of the present embodiment.
FIG. 2 is a diagram showing the relationship between the rollers 12 and 13 and the scrapers 18 and 19. In this figure, the cutting edges 18a and 19a of the scrapers 18 and 19 are in contact with the outer peripheral surface so as to cross the axial direction of the respective rollers 12 and 13, and as the respective rollers 12 and 13 rotate. The rollers 12 and 13 are relatively moved in the circumferential direction on the outer peripheral surfaces.

  FIG. 3 is a preferred shape of the cutting edges 18a, 19a of the scrapers 18, 19. In the case of the illustrated example, the cutting edges 18a and 19a of the scrapers 18 and 19 have an angle α1 of 90 degrees or less with respect to the tangent line 20 of the outer peripheral surfaces of the rollers 12 and 13. Then, the blade edges 18a, 19a of this angle α1 move relative to the circumferential direction along the outer circumferential surface of the rollers 12, 13 as the rollers 12, 13 rotate in the direction of the arrow 21, thereby The foreign matter 22 adhering to the surface is “sawed off”.

  Therefore, according to this embodiment, on the surface of the rollers 12 and 13, for example, on the belt conveyor for conveying the processing residue (metal powder or the like) of the metal ring 2 a, suspended matter in the air, or the metal ring 2 a. Even when foreign matter 22 such as dust is attached, the foreign matter 22 can be “sawed off” by the blade edges 18a and 19a of the scrapers 18 and 19 as the rollers 12 and 13 rotate. The inner peripheral surface of the ring 2a (the contact surface with the rollers 12 and 13) is not damaged.

  Here, as described above, the scrapers 18 and 19 are (A) provided for “scraping off” the foreign matter 22 adhered to the surfaces of the rollers 12 and 13 with the blade edges 18a and 19a. (B) It is also required that the surfaces of the rollers 12 and 13 are not damaged by the contact of the blade edges 18a and 19a.

  In order to satisfy the condition (A), the blade edges 18a and 19a have a sufficient angle α (in principle, they are not rounded), and the strength (hardness) of the blade edges 18a and 19a is strong. However, in order to satisfy the condition (B), the hardness of the blade edges 18a and 19a is on the surfaces of the rollers 12 and 13, respectively. It is necessary that it cannot be damaged.

  Note that the cutting edges 18a and 19a of the scrapers 18 and 19 in the above embodiment have a shape of an angle α1 with respect to the tangent line 20 of the outer peripheral surface of the rollers 12 and 13 (see FIG. 3), but this is not limitative. Not. What is necessary is just to select a suitable thing from various angles according to the material of the rollers 12 and 13, the kind of the foreign material 22 adhering to the rollers 12 and 13, or the method of adhesion.

  FIG. 4 is another preferred shape of the cutting edges 18a and 19a of the scrapers 18 and 19. FIG. The figure (a) is an example which has the blade edge | tips 18a and 19a of the angle (alpha) 2 of 90 degrees or less equally divided with respect to the perpendicular line 23 of the outer peripheral surface of the rollers 12 and 13, and the figure (a). Similarly, in this example, the blade edges 18a and 19a having an angle α3 of 90 degrees or 90 degrees or more equally divided with respect to the vertical line 23 of the outer peripheral surfaces of the rollers 12 and 13 are shown.

  The difference between the two is the angle (α2, α3) of the blade edges 18a, 19a. The magnitude relationship between these angles is “α2 <α3”, but the small angle α2 has the advantage that the removal effect of the foreign matter 22 is high, but has the demerit that the cutting edges 18a and 19a are easily worn, On the contrary, the angle α3 has a merit that the cutting edges 18a and 19a are not easily worn, but has a demerit that the effect of removing the foreign matter 22 is low. In practice, considering the type of foreign matter 22 to be removed, the materials of the rollers 12 and 13 and the scrapers 18 and 19, which merits should be prioritized, an appropriate angle may be selected.

  Further, in the illustrated example, since the blades 18a and 19a have an angle "equally divided" with respect to the vertical line 23 on the outer peripheral surface of the rollers 12 and 13, the removal effect of the foreign matter 22 is effectively reduced. The direction of rotation is not affected. For this reason, it is suitable to apply when the rollers 12 and 13 are rotated forward and backward.

It is a notional block diagram of the circumference correction device, circumference measurement device, or surface defect inspection device in an embodiment. FIG. 4 is a relationship diagram between rollers 12 and 13 and scrapers 18 and 19. It is a preferable shape figure of the blade edges 18a and 19a of the scrapers 18 and 19. It is another preferable shape figure of the blade edges 18a and 19a of the scrapers 18 and 19. It is an external view of a CVT belt. It is a principal part conceptual diagram of a circumference correction | amendment apparatus, a circumference measurement apparatus, and a surface defect inspection apparatus.

Explanation of symbols

2a Metal ring 10 This device (perimeter correction device, perimeter measurement device, surface defect inspection device)
12 Roller 13 Roller 18 Scraper 18a Cutting edge 19 Scraper 19a Cutting edge 20 Tangent 23 Vertical line

Claims (12)

A metal ring is stretched between a pair of rollers on the rotational drive side and a driven side, and a predetermined tension is applied to the metal ring by adjusting a separation distance between the pair of rollers. A circumferential length correcting device for correcting a length, comprising: a scraper having a cutting edge which contacts each outer circumferential surface of the pair of rollers. A metal ring is stretched between a pair of rollers on the rotational drive side and a driven side, the separation distance of the pair of rollers is adjusted to give a predetermined tension to the metal ring, the separation distance is measured, and the measured value In the circumference measuring apparatus for calculating the circumference of the metal ring, a circumference measuring apparatus comprising a scraper having a cutting edge that contacts each outer circumferential surface of the pair of rollers. The metal ring is stretched between a pair of rollers on the rotational drive side and the driven side, and the presence or absence of surface defects of the metal ring is inspected while adjusting a separation distance between the pair of rollers to give a predetermined tension to the metal ring. In the surface defect inspection apparatus, a surface defect inspection apparatus comprising a scraper having a cutting edge in contact with each outer peripheral surface of the pair of rollers. The peripheral length correcting device according to claim 1, wherein the scraper blade edge has an angle of 90 degrees or less with respect to a tangent to the outer peripheral surface of the roller. The peripheral length measuring apparatus according to claim 2, wherein the scraper blade edge has an angle of 90 degrees or less with respect to a tangent to the outer peripheral surface of the roller. The surface defect inspection apparatus according to claim 3, wherein the scraper blade edge has an angle of 90 degrees or less with respect to a tangent to the outer peripheral surface of the roller. The peripheral length correcting device according to claim 1, wherein the scraper blade edge has an angle of 90 degrees or less equally divided with respect to a vertical line of the outer peripheral surface of the roller. The peripheral length measuring device according to claim 2, wherein the scraper blade edge has an angle of 90 degrees or less equally divided with respect to a vertical line of the outer peripheral surface of the roller. The surface defect inspection apparatus according to claim 3, wherein the scraper blade edge has an angle of 90 degrees or less equally divided with respect to a vertical line of the outer peripheral surface of the roller. The peripheral length correcting device according to claim 1, wherein the scraper blade edge has an angle of 90 degrees or 90 degrees or more equally divided with respect to a vertical line of the outer peripheral surface of the roller. The peripheral length measuring device according to claim 2, wherein the scraper blade edge has an angle of 90 degrees or 90 degrees or more equally divided with respect to a vertical line of the outer peripheral surface of the roller. 4. The surface defect inspection apparatus according to claim 3, wherein the scraper blade edge has an angle of 90 degrees or 90 degrees or more equally divided with respect to a vertical line of the outer peripheral surface of the roller.

Images