JP3700136B2 - Non-contact type meandering meter - Google Patents

Description

  The present invention relates to a non-contact type meandering amount measuring device for materials (objects to be measured) such as connector contacts. As used herein, meandering means that the material is curved into a substantially arcuate shape or the like.

  A conventional meandering amount measurement and measuring device will be described with reference to FIGS.

  First, the direction of meandering of the connector contact will be described with reference to FIG. The multiple contacts 11A and the carrier 11B are integrally pressed from a metal plate. At this time, it is convenient for the carrier 11B to be curved in the plus direction if it is curved in the direction of FIG. 6A, and in the minus direction if it is curved in the direction of FIG. 6B. I will say.

Next, the measurement of the meandering amount of the connector contact without the meandering amount measuring device will be described with reference to FIG. The first scale 12 is arranged in the horizontal direction, and the second scale 13 is arranged in the direction perpendicular to the first scale 12. The plurality of contacts 11A and the carrier 11B which are integrally formed into contact with the first scale 12 on measures a length L ₁ and the maximum meandering amount L ₂ of from one end to the other end of the carrier 11B.

  Next, a simple meandering amount measuring device will be described with reference to FIG. The scale 14 is provided with pins 15 at intervals L near both ends of the center line 14A in the length direction, and a scale 14B is engraved on one side. Further, a scale 14C is carved at a right angle from the center position between the pair of pins 15 with respect to the scale 14B. When the object to be measured is brought into contact with the pair of pins 15, regardless of whether the object to be measured is curved in the plus direction or the minus direction, the maximum meandering amount per length L of the object to be measured is a reference of the scale 14C. It can be measured by the distance from the position (0 point).

  The technique for measuring the meandering amount of the connector contact without the meandering amount measuring device has the following drawbacks. That is, since a step is generated between the thickness of the first scale 12 (about 2 mm) and the thickness of the carrier 11B (0.2 to 0.6 mm), the measured value is difficult to read. Further, since the second scale 13 is measured perpendicularly to the first scale 12, measurement errors are likely to occur. Furthermore, measurement is possible when the carrier 11B is curved in the plus direction, but measurement is impossible when the carrier 11B is curved in the minus direction because the center portion of the carrier 11B is in contact with the first scale 12. is there.

  The aforementioned simple meandering amount measuring device has the following drawbacks. That is, since the scale 14C is read with the naked eye of the measurer (individual error is about 0.5 mm), high-precision measurement cannot be performed in the field of recent narrow pitch and multi-core connectors. As a result, a connector that does not pass the standard is manufactured, causing problems in production, and loss resulting in having to discard defective products.

  Therefore, the present invention improves the above-described conventional measuring method of meandering amount and the disadvantages of the measuring device, can perform highly accurate measurement easily in a short time, has no personal error of the operator, and is subject to measurement. An object of the present invention is to provide a meandering amount measuring device capable of measuring regardless of the bending direction of an object.

  The present invention employs the following means in order to solve the above problems.

  1. A base part, a support part fixed to the base part and supporting the vicinity of both ends of the object to be measured, and a measuring part held by the base part and measuring the meandering amount of the object to be measured The non-contact inspection unit includes a non-contact inspection unit that can move from a reference position until the object to be measured is detected, and a display unit that displays a movement amount of the non-contact inspection unit. Type meandering amount measuring device.

  2. The guide frame that guides the non-contact inspection unit may be fixed to the base unit at an arbitrary position so that the position of the guide frame can be changed in a direction orthogonal to the direction of the meandering amount of the object to be measured. 2. The non-contact meandering amount measuring device according to the above 1, which is configured to be able to perform.

  As is clear from the above description, the present invention has the following effects.

  1. The meandering amount of the object to be measured can be easily measured in a short time with high accuracy (for example, on the order of 10 μm).

  2. Since there is no individual error of the measurer, accurate measurement can be performed.

  3. This is convenient because the object to be measured can be measured regardless of whether it is curved in the plus direction or minus direction.

  A non-contact type meandering amount measuring device according to an embodiment of the present invention will be described. Prior to this, a contact type meandering amount measuring device as a reference technique necessary for understanding the present invention will be described with reference to FIGS. 1 and 2. To explain.

  A spline micrometer (operation unit) 2 and a contact inspection unit 3 are disposed in the center of the contact-type meandering amount measuring instrument near one side of the substantially rectangular base unit 1. A pair of support pins (support portions) 4 are erected in the vicinity of the two sides, and a touch limit sensor (detection portion) that is electrically connected to the contact inspection portion 3 near one corner of the base portion 1. 5 is disposed. The “0” reference of the spline micrometer 2 is a straight line connecting the pair of support pins 4. As shown in FIG. 1A, the lower side of the DUT 6 indicated by a two-dot chain line abuts on the pair of support pins 4.

  The contact inspection part 3 includes a contact part 3A that contacts the object to be measured 6, a sliding part 3B that holds the contact part 3A and can slide relative to the base part 1, and a sliding part 3B. The connecting portion 3C protrudes and is fixed to the spindle 2A of the spline micrometer 2. 3 A of contact parts are gold-plated for corrosion resistance and contact reliability.

  Depending on whether the DUT 6 is curved in the positive direction or the negative direction, when the knob 2B of the spline micrometer 2 is rotated leftward or rightward as indicated by an arrow in FIG. The spindle 2A moves forward or backward in the direction of the arrow. When the contact part 3A of the contact inspection part 3 comes into contact with the device under test 6 (for example, a connector contact carrier), the touch limit sensor 5 detects. In the touch limit sensor 5, the buzzer 5A sounds and the lamp 5B is lit. At this time, the amount of movement of the spindle 2A of the spline micrometer 2 from the “0” reference is read with the scale of the spline micrometer 2 and converted by a conversion formula to calculate the meandering amount of the object 6 to be measured.

Maximum meandering amount L ₂ of the object 6 is not necessarily a present in the intermediate position of the pair of support pins 4 in FIG. 2 (a), the longitudinal splines micrometers 2 and contact inspection unit 3 through the DUT 6 It is configured so that the position can be changed in the direction (direction orthogonal to the direction of the meandering amount) and can be fixed to the base portion 1 at an arbitrary position.

  A total of four pedestals 1A are provided in the vicinity of both sides of the bottom surface of the base portion 1 in the longitudinal direction.

  Next, the non-contact type meandering amount measuring device according to the first embodiment of the present invention will be described with reference to FIG. However, the description of the same points as the contact meandering amount measuring device is omitted, and only the differences are described.

  A U-shaped guide frame 1 </ b> B is fixed to the center of the base portion 1. The laser sensor 8 is attached to the guide frame 1B so that it can slide in the direction of the arrow in FIG. The laser sensor 8 is substituted for the contact portion 3A of the first embodiment. The laser sensor 8 may be either a reflective sensor that receives light reflected by the emitted light that hits the object to be measured, or a transmissive sensor that receives the emitted light behind the object to be measured.

In FIG. 3B, the laser sensor 8 is moved up or down in the direction of the arrow depending on whether the DUT 6 is bent in the plus direction or the minus direction. Then, a straight line connecting the fixed support pins 4, that is, the movement amount L ₂ from the “0” reference of the laser sensor 8 to the lower side of the object 6 to be measured is displayed on the display unit 9 (in this example, −0.018 mm). And the meandering amount of the DUT 6 is calculated. The laser sensor 8 is connected to the display unit 9 by a cable 10.

Maximum meandering amount L ₂ of the object 6, since not always present in the intermediate position of the pair of support pins 4 in FIG. 3 (a), the direction of the longitudinal (meandering amount of the measurement object 6 a guide frame 1B The design can be changed so that the position can be changed in a direction orthogonal to the base portion 1 and can be fixed to the base portion 1 at an arbitrary position.

BRIEF DESCRIPTION OF THE DRAWINGS It is various figures of the contact-type meandering amount measuring device used as a reference technique required in order to understand this invention, (a) is a top view, (b) is sectional drawing, (c) shows a front view, respectively. It is a schematic diagram of the principal part of the measuring device, (a) is a plan view, (b) shows a side view. It is a schematic diagram of the principal part of the non-contact type meandering amount measuring device of Example 1 of this invention, (a) shows a top view, (b) shows a side view, respectively. It is a front view of the measurement technique of the meandering amount of the connector contact when there is no meandering amount measuring device. It is a front view of the conventional simple meandering amount measuring device. It is a figure for demonstrating the direction of the meandering of the contact for connectors, (a) shows the state curved in the plus direction, (b) shows the state curved in the minus direction, respectively.

Explanation of symbols

1 Base part 1A Base 1B Guide frame 2 Spline micrometer (operation part)
2A Spindle 2B Knob 3 Contact inspection part 3A Contact part 3B Sliding part 3C Connection part 4 Support pin (support part)
5 Touch limit sensor (detection unit)
5A Buzzer 5B Lamp 6 Object to be measured 8 Laser sensor 9 Display unit 10 Cable 11A Contact 11B Carrier

Claims (2)

A base part, a support part fixed to the base part and supporting the vicinity of both ends of the object to be measured, and a measuring part held by the base part and measuring the meandering amount of the object to be measured And
The measurement unit includes a non-contact inspection unit that can move from a reference position until the object to be measured is detected, and a display unit that displays a movement amount of the non-contact inspection unit. Non-contact type meandering amount measuring device. The guide frame that guides the non-contact inspection unit may be fixed to the base unit at an arbitrary position so that the position of the guide frame can be changed in a direction orthogonal to the direction of the meandering amount of the object to be measured. The non-contact type meandering amount measuring device according to claim 1, wherein the non-contact type meandering amount measuring device is configured.

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