JPH07122887A - Automatic trimmer adjuster - Google Patents

Abstract

PURPOSE:To perform the measurement by moving a contact probe to a measuring point with a robot hand when it is necessary to adjust a trimmer automatically by observing the characteristics in contact with a measuring terminal in a circuit. CONSTITUTION:When an adjusting trimmer 11 of a circuit board 10 is turned and adjusted with the signal at the measuring point of the board being observed, a measuring probe is brought into contact with the measuring point beforehand. The measuring probe holds a knob 3 with a robot hand 1 and moves the knob 3 to the position of the measuring point in the directions of X, Y and Z. Then, a pump 5 operates to suck a sucking plate 8 of the probe. Thus, a needle 7 continues contacting the measuring point even if the knob 3 is separated, and the measurement can be performed with a measuring device 4. After the finish of the movement of the measuring probe, a driver 2 is held with the robot hand 1, and the driver moves to the position of the trimmer 11. The trimmer is turned, and the measuring probe and the driver move to the other positions. All the operations are performed in predetermined specified sequence with a control part 13.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for automatically adjusting a trimmer for adjusting circuit characteristics on an electronic wiring board.

[0002]

2. Description of the Related Art A "printed circuit board automatic inspection and adjustment station" manufactured by Matsushita Electric Industrial Co., Ltd. is known as a conventionally known example.

A conventional trimmer automatic adjusting apparatus will be described with reference to the printed circuit board automatic inspection and adjusting station with reference to the drawings.

FIG. 3 is a block diagram of a conventional trimmer automatic adjusting apparatus.

In the conventional trimmer automatic adjusting apparatus, probe needles 15 are embedded at positions corresponding to the measurement points on the wiring board in a one-to-one correspondence, and either the jig 14 or the probe needles 15 pressed against the substrate to be used is used. Switch 16 for selection and driver 2 for rotating trimmer for adjusting circuit characteristics on wiring board
A robot hand 1 for moving the probe needle 15 and the driver 2 to predetermined positions, a measuring device 5 for measuring the characteristics of the circuit, a signal generator 6 for supplying a signal to the circuit, a robot hand 1, a measuring device. 5, a signal generator 6, and a control unit 13 that controls the switcher 16.

Next, the operation of the conventional trimmer automatic adjusting apparatus will be described with reference to FIG.

As an example, a process of measuring the signal of the wiring 12 and rotating the trimmer 11 so that the measurement result satisfies a certain standard will be described.

First, the jig 14 is pressed against the wiring board to bring all the probe needles into contact with the measurement points. Next switch 1
6, the probe needle contacting the wiring 12 and the measuring instrument 5 are connected. Next, the driver 2 is moved to the position of the trimmer 11 by the robot hand 1, the trimmer is rotated, and the signal of the wiring 12 is measured. The rotation is repeated until the measurement result satisfies the standard.

Next, when another trimmer is adjusted, the connection of the measuring device is switched to the probe needle that contacts the corresponding measuring point, the driver is moved, and the same operation is performed again.

All of these series of operations are stored in the control unit 13 in advance as programs.

[0011]

The above-mentioned conventional automatic trimmer adjusting device requires a jig in which the probe needle is embedded for measuring the signal for adjustment. This jig is different for each type of wiring board, so it is necessary to prepare a new wiring board every time a new wiring board is made, and it takes time to replace the jig when adjusting multiple types of wiring boards. There is a drawback that.

[0012]

SUMMARY OF THE INVENTION An automatic trimmer adjusting device of the present invention includes a signal measuring probe fixed on a predetermined wiring on an electronic wiring board by a suction cup, and a trimmer for adjusting circuit characteristics on the wiring board. A rotating driver, a signal measuring probe and a robot hand that moves the driver to a predetermined position, a measuring device that measures the characteristics of the circuit by a signal from the signal measuring probe, and a signal generator that supplies a signal to the circuit. , A robot hand, a measuring device, and a control unit for controlling the signal generator.

[0013]

Embodiments of the present invention will now be described with reference to the drawings.

FIG. 1 is a block diagram of an embodiment of the automatic trimmer adjusting device according to the present invention, and FIG. 2 is an enlarged view of the probe section of FIG.

Referring to FIG. 1, the automatic trimmer adjusting device of this embodiment has a spring probe 7 fixed to a predetermined wiring 12 on a wiring board 10 by a suction cup 2 and a wiring board 10.
Driver 2 that rotates the trimmer for adjusting the circuit characteristics above,
A robot hand 1 for moving the spring probe 7 and the driver 2 to predetermined positions, a measuring device 4 for measuring the characteristics of the circuit on the wiring 12 by a signal from the spring probe 7, and a signal generator 6 for supplying a signal to the circuit. And a control unit 13 that controls the robot hand 1, the measuring device 4, and the signal generator 6.

Here, in the robot hand 1, the driver 2 for rotating the trimmer is attached to the trimmer on the wiring board 10, for example, 11
Move to the position of and rotate. The signal generator 6 supplies a signal necessary for trimmer adjustment to the wiring board. The measuring device 4 measures the output of the measuring point on the wiring board. Next, the probe that contacts the wiring 12 on the wiring board is configured as follows.
The spring probe 7 is embedded in the center of the suction cup 8.

The pump 5 for sucking the inside of the suction cup is connected to the inside of the suction cup by a tube 9. The spring probe 7 is connected to the measuring device 4. Depending on the kind of signal to be measured, an attenuator or a matching circuit may be required, but this is included in the wiring portion of the spring probe 7 and the measuring device 4 (not shown).

The wiring and the tube 9 are made of a sufficiently soft material so as not to exert an excessive external force on the suction cup 8. The robot hand 1 moves the probe to a predetermined position by grasping the knob 3.

Next, the operation of the automatic trimmer adjusting device of this embodiment will be described.

As an example, the signal on the wiring 12 is measured,
A process of rotating the trimmer 11 so that the measurement result satisfies a certain standard will be described.

In FIGS. 1 and 2, first, the knob 3 is grasped by the robot hand 1 and moved onto the wiring 12. Next, the pump 5 is started to suck the inside of the suction cup 8 and, at the same time, the robot hand is released. Since the probe is fixed by the suction cup 8, the robot hand next goes to pick up the driver 2 stored at a predetermined position. Next, the driver 2 is moved to the position of the trimmer 11, the trimmer is rotated, and the wiring 12
Measure the signal. The rotation is repeated until the measurement result satisfies the standard.

Next, when adjusting another trimmer, first return the driver 2 to the storing position, then grasp the knob 3 and
The pump 5 is stopped. Next, the probe is moved to the corresponding measurement point, and the same operation is performed again.

All of these series of operations are stored as a program in the control unit 13 in advance.

[0024]

As described above, the automatic trimmer adjusting device of the present invention does not require a jig for signal measurement by fixing the contact probe to the measuring terminal in the circuit with the suction cup, and thus a new wiring is provided. Even if the board comes, the cost for preparing the jig is unnecessary, and the jig can be replaced even when adjusting a plurality of types of wiring boards, and the time for replacement can be saved.

[Brief description of drawings]

FIG. 1 is a configuration diagram of an embodiment of an automatic trimmer adjustment device according to the present invention.

FIG. 2 is an enlarged view of the probe unit shown in FIG.

FIG. 3 is a configuration diagram of a conventional trimmer automatic adjusting device.

[Explanation of symbols]

 1 Robot hand 2 Driver 3 Knob 4 Measuring instrument 5 Pump 6 Signal generator 7 Spring probe 8 Sucker 9 Tube 10 Wiring board 11 Trimmer 12 Wiring 14 Jig 15 Probe needle 16 Switcher

Claims (2)

[Claims] 1. A signal measuring probe for measuring a signal on a predetermined wiring on an electronic wiring board, a driver for rotating a trimmer for adjusting circuit characteristics on the wiring board, and the signal measuring probe and driver. A robot hand that moves to a predetermined position, a measuring instrument that measures the characteristics of the circuit by a signal from the signal measuring probe, a signal generator that supplies a signal to the circuit, the robot hand, a measuring instrument,
An automatic trimmer adjustment device, comprising: a control unit that controls a signal generator. 2. A signal measuring probe includes a probe with a spring for measuring a signal on a predetermined wiring on the electronic wiring board, and a suction cup for fixing the probe with the spring on the predetermined wiring. Characteristic automatic trimmer adjustment device.