JP2002134307A - Automatic adjusting method for variable resistor and device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a variable resistor automatic adjusting method and a device, where a screw driver can be inserted surely. SOLUTION: The tip of a screw driver 2 is made to face to a variable resistor having a screw-driver groove 10, and when the screw driver 2 is moved as it is held by a movable holder 3, an optical sensor, that detects the position of the movable holder 3 when the tip of the screw driver is located in the groove of the driver groove 10, is provided on the traveling route of the movable holder 3; and it is determined that the tip of the screw driver has been inserted correctly into the driver groove 10, when the optical sensor is actuated. If the tip of the screw driver 2 goes out of the screw driver groove 10, since the optical sensor will not be actuated, the screw driver can be inserted surely.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for automatically adjusting a variable resistance using an automatic machine such as a robot.
The present invention relates to a method and an apparatus for automatically adjusting a variable resistor for ensuring insertion of a driver.

[0002]

2. Description of the Related Art A variable resistor is an electric component having a variable resistance value. The rotary variable resistor includes a rotor, and the resistance value can be changed according to the rotation angle.
In order to rotate the rotor, for example, a driver groove is formed on the rotation surface of the rotor. By inserting a driver into the driver groove and rotating the driver, the rotor can be rotated.

When an electronic device or the like is equipped with a variable resistor and the variable resistor is automatically adjusted using an automatic machine such as a robot, conventionally, as shown in FIG. A driver 2 for rotating the child 1, a movable holder 3 for holding the driver 2, and a movable holder 3
Guide 5 which guides the driver reciprocally in the traveling direction of the driver 2
And to use. Then, as shown in FIG. 5, the monitor camera 51 captures an image of the driver 2 accessing the variable resistor, and processes the captured image so that the tip of the driver 2 is correctly positioned in the driver groove. Confirm that it has been inserted.

[0004]

When a variable resistor is provided inside an assembly, a through hole or a recess (hereinafter, collectively referred to as a hole) for driver access is provided on an outer shell of the assembly. The driver 2 is inserted into this hole, and the driver is inserted into the driver groove 10 of the variable resistor.

When the variable resistor is disposed in such a deep place, even if an automatic machine is used to automatically adjust the variable resistor, as shown in FIG. 6, the variable resistor is provided on the outer shell 61 of the assembly. Since the driver 2 is inserted into the hole 62, the monitor camera 51 cannot capture an image of the driver 2 accessing the variable resistor. For this reason, it cannot be confirmed that the tip of the driver 2 has been correctly inserted into the driver groove 10.

If the driver 2 is rotated while the tip of the driver 2 is not inserted into the driver groove 10, the variable resistor may be damaged, which is a problem.

It is an object of the present invention to solve the above-mentioned problems and to provide a variable resistance automatic adjustment method and a device therefor which ensure the driver insertion.

[0008]

In order to achieve the above object, a method of the present invention is to provide a method in which the tip of a driver is made to face a variable resistor having a driver groove, the driver is held by a movable holder, and the variable resistor is held. When moving the movable holder toward the container, an optical sensor for detecting the position of the movable holder when the tip of the driver is located in the driver groove is provided on the movement path of the movable holder, When the sensor is activated, it is determined that the tip of the driver has been correctly inserted into the driver groove.

Further, the apparatus of the present invention comprises a driver for rotating a rotor of a variable resistor, a movable holder for holding the driver, and a guide for guiding the movable holder reciprocally in the traveling direction of the driver. In the automatic variable resistance adjusting device provided with a tool, a light emitting device and a light receiving device are provided so that an optical axis passes through the movable holding tool and the guide tool when a tip of the driver is located in a driver groove of the rotor. The optical sensor is configured by installing either one of them, and when this optical sensor is operated, it is determined that the tip of the driver is correctly inserted into the driver groove.

[0010]

An embodiment of the present invention will be described below in detail with reference to the accompanying drawings.

As shown in FIG. 1, an automatic variable resistance adjusting device according to the present invention comprises a driver 2 for rotating a rotor 1 of a variable resistor, a movable holder 3 for holding the driver 2, Slide member 4 integrated with holder 3
A linear slide rail (guide tool) 5 for sliding the slide member 4 to reciprocate in the traveling direction of the driver 2; and mounting the linear slide rail 5 to move and change the posture of a plurality of axes. Robot (body not shown)
A hand unit 6, a laser emitter 7 attached to one side of the linear slide rail 5, a through-hole 8 that passes through the linear slide rail 5 and passes the laser light to the opposite side of the laser emitter 7, A laser receiver 9 is attached to the rear end of the holder 3 (the end opposite to the end holding the driver 2) with the light receiving surface facing the linear slide rail 5.

The driver 2 is driven and rotated by a motor (not shown). The attitude of the rotation axis of the driver 2 is made to coincide with the traveling direction of the driver 2.

The rear end of the movable holder 3 and the rear end of the slide member 4 are on the same plane, and the light receiving surface of the laser receiver 9 is arranged slightly above the plane.

The robot is equipped with control software for recognizing the position and orientation of the hand unit 6 with respect to the rotor 1 of the variable resistor and controlling the movement of the hand unit 6. The control software includes a driver 2 when the optical sensor composed of the laser emitter 7 and the laser receiver 9 operates.
It is assumed that the processing includes a process of judging that the tip of is properly inserted into the driver groove 10.

The operation of the automatic variable resistance adjusting device shown in FIG. 1 will be described.

First, the driver 2 is positioned in the direction perpendicular to the rotation surface of the rotor 1 of the variable resistor (upward in the illustrated example) by controlling the movement and posture of the hand unit 6, and the tip of the driver 2 is inserted into the driver groove 10. Face. At this time, the laser receiver 9
Are located below the optical axis of the laser emitter 7. From this state, the driver 2 is moved forward (downward in the illustrated example) by moving the hand unit 6. The target position for moving the hand portion 6 is a position where the tip of the driver 2 in the state of FIG. 1 comes to a position deeper than the driver groove 10. Therefore, the hand unit 6 moves even after the tip of the driver 2 is in contact with the rotor 1 of the variable resistor. Here, driver 2
Is correctly inserted into the driver groove 10, and the front end of the driver 2 is in contact with the bottom surface of the driver groove 10.

The tip of the driver 2 is a rotor 1 of a variable resistor.
When the hand unit 6 is moved even after the contact with the slider, the tip of the driver 2 is pressed against the rotor 1 of the variable resistor, and the slide member 4 slides on the linear slide rail 5 due to the reaction force thereof. (In the example shown). Thereby, the movable holder 3 is relatively raised. When the hand portion 6 is stopped at the target position, the plane formed by the rear end of the movable holder 3 and the rear end of the slide member 4 comes to a position slightly below the through hole 8 as shown in FIG. . At this time, the laser light receiver 9 crosses the optical axis of the laser light emitter 7, and the optical sensor operates. Therefore, the control software determines that the tip of the driver 2 has been correctly inserted into the driver groove 10.

When the tip of the driver 2 is displaced from the driver groove 10, or when the rotation angle of the tip of the driver 2 is different from the rotation angle of the driver groove 10, the tip of the driver 2 may be in the driver groove 10. , And comes into contact with the upper surface of the rotor 1. In this case as well, when the hand portion 6 is further moved, the slide member 4 and the movable holder 3 relatively rise due to the reaction force that the tip of the driver 2 is pressed against the upper surface of the rotor 1 of the variable resistor. However, in this case, the hand portion 6 is further raised by the difference between the upper surface of the rotor 1 and the bottom surface of the driver groove 10, so that when the hand portion 6 is stopped at the target position, as shown in FIG. The plane formed by the rear end of the movable holder 3 and the rear end of the slide member 4 comes to a position where it covers the through hole 8. At this time,
The movable holder 3 and the slide member 4 cross the optical axis that should reach the laser receiver 9 from the laser emitter 7, and the optical sensor is deactivated. As described above, when the optical sensor is not operated after the hand unit 6 reaches the target position, the control software determines that the tip of the driver 2 is not inserted into the driver groove 10. Therefore, in this state, the driver 2 is prohibited from rotating, and the variable resistor is prevented from being damaged.

In the example shown in FIGS. 1 to 3, the variable resistor is not disposed in the hole, but the variable resistor automatic adjusting method and apparatus of the present invention employs the variable resistor disposed in the hole. Of course, it is particularly effective in such a case.

The variable resistance automatic adjustment method and apparatus according to the present invention adjust the variable resistance of a variable resistor incorporated in a housing of an optical transceiver, for example, in an optical output waveform adjustment step in manufacturing an optical transceiver. Good to use at times.

[0021]

The present invention exhibits the following excellent effects.

(1) In the monitor camera, the driver can be reliably inserted even when the variable resistor is arranged in a place where it is not possible to take an image of how the driver is accessing the variable resistor.

[Brief description of the drawings]

FIG. 1 is a side view of a variable resistance automatic adjusting device according to an embodiment of the present invention.

FIG. 2 is a side view of the variable resistance automatic adjusting device of FIG. 1 in a state where a tip of a driver is correctly inserted into a driver groove.

FIG. 3 is a side view of the automatic variable resistance adjusting device of FIG. 1 in a state where a tip of a driver is not inserted into a driver groove.

FIG. 4 is a side view of a conventional variable resistance automatic adjusting device.

5 is a side view of the variable resistance automatic adjusting device of FIG. 4 in a state where the tip of a driver is correctly inserted into a driver groove.

6 is a side view of a state in which a driver of the automatic variable resistor adjusting device in FIG. 4 tries to access a variable resistor in a hole.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rotor of variable resistor 2 Driver 3 Movable holder 4 Slide member (guide tool) 5 Linear slide rail 6 Robot hand part 7 Laser emitter 8 Through hole 9 Laser receiver 10 Driver groove

Claims (2)

[Claims] 1. A front end of a driver is made to face a variable resistor having a driver groove, and when the driver is held by a movable holder and moved toward the variable resistor, the driver is placed on a moving path of the movable holder. An optical sensor for detecting the position of the movable holder when the tip of the driver is located in the driver groove is installed, and when the optical sensor is activated, the tip of the driver is correctly inserted into the driver groove. A variable resistance automatic adjustment method characterized in that it is determined that the adjustment has been performed. 2. A variable device comprising: a driver for rotating a rotor of a variable resistor; a movable holder for holding the driver; and a guide for guiding the movable holder to reciprocate in the traveling direction of the driver. In the automatic resistance adjuster, one of a light-emitting device and a light-receiving device is installed on the movable holder and the guide so that the optical axis passes when the tip of the driver is located in the driver groove of the rotor. An automatic sensor for adjusting a variable resistance, wherein when the optical sensor is activated, it is determined that the tip of the driver is correctly inserted into the driver groove.