JP2517899Y2 - Mounting and positioning device for eccentric shaft parts - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for mounting and positioning eccentric shaft parts.

[0002]

2. Description of the Related Art When incorporating an eccentric shaft component, for example, a component having a circular or cylindrical shape whose axis is eccentric, positioning is performed so that the eccentric direction (the eccentric eccentric portion) is in the proper direction. May be installed. In such a case, a mark or the like is ordinarily preliminarily determined in advance of the eccentric shaft component before assembling, and a mark or the like is attached in advance when actually mounting the eccentric shaft component.

Further, there is also adopted a method of easily finding the eccentric direction by rotating an eccentric shaft component and observing its rotational shake.

[0004]

According to the conventional means as described above, when the amount of eccentricity is large, the direction of eccentricity can be easily determined, but when the amount of eccentricity becomes small, it becomes inaccurate visually. If it becomes as small as 1 mm, it will no longer be possible by visual inspection.

According to the above-mentioned marking method, the mounting accuracy is deteriorated due to variations in the alignment of the marks when actually mounting.

The present invention has been made in order to solve such a conventional problem, and can accurately determine the eccentric direction even if the eccentric amount of the eccentric shaft part is minute, and immediately without marking. Moreover, it is an object of the present invention to provide an eccentric shaft component mounting / positioning device that can be assembled with high precision.

[0007]

As a means for technically solving this problem, the present invention provides a motor with a brake for coaxially rotating a rotation detecting disk and an eccentric shaft part, and the rotation detecting disk. In addition to providing a rotation detection sensor in close proximity to the eccentric shaft object parts, the eccentricity detection sensor is provided in close proximity, and a first amplifier connected to these sensors to store the peak value of the eccentricity detection in the first rotation, A control device comprising a combination of a sequencer and a second amplifier for stopping the motor with the brake when a predetermined value is obtained by performing a comparative calculation of the peak value and the eccentricity measurement value on the second rotation Is the gist.

[0008]

[Operation] The rotation detection disk and the eccentric shaft part are coaxially rotated at a slow speed by the motor with brake, and the eccentricity peak value (eccentricity direction) is detected by the eccentricity detection sensor at the first rotation, and the rotation position at that time is detected. When the rotation detection sensor detects them and stores them in the first amplifier, and when the second rotation is performed, the second amplifier compares and calculates the peak value and the eccentricity measurement value, and a predetermined value (zero) appears. Thus, the eccentric direction can be detected by stopping the motor with brake.

[0009]

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In FIG. 1, reference numeral 1 is a base, on which a pillar 2 is erected, and a motor 3 with a brake is installed as shown in FIG.

Reference numeral 4 denotes a rotary shaft horizontally supported by the support column 2, and a transmission gear 5 and a rotation detecting disc 6 are fixed to the end of the rotation shaft so as to rotate coaxially with each other. A timing belt 7 is wound around the motor 3 with a brake so that the rotation of the motor is transmitted to the rotating shaft 4 or the rotation thereof is stopped.

Reference numeral 8 is a tailstock provided on the base 1, and a shaft rod 9 is rotatably supported on an upper part thereof so that the shaft rod 9 and the axis of the rotary shaft 4 coincide with each other. The lower part is formed so as to be slidable along the guide rail 10.

A stay 11 is provided at the rear end of the guide rail 10.
Is vertically fixed, and the adjusting screw 12 is screwed into the stay 11, and the engaging piece 13 attached to the rear end of the tailstock 8 is slidably screwed to the tip of the adjusting screw 12. And the coil spring 14 between the engaging piece 13 and the stay 11.
Is provided. Therefore, the tailstock 8 is biased forward by the coil spring 14.

Reference numeral 15 denotes a stopper pin attached to the tip of the screw 12 so as to prevent the engagement piece 13 from coming off. Reference numeral 16 is a stopper piece attached to the front end portion of the guide rail 10 via a stay 17 for preventing the tailstock 8 from coming off the guide rail 10.

Reference numeral 18 is a rotation detecting sensor, and a mounting bracket 19
It is fixed to the upper end portion of the column 2 via the, and is arranged in proximity so as to face the outer circumference of the rotation detection disk 6.

Reference numeral 20 denotes an eccentricity detection sensor, which is a mounting bracket 21.
Is fixed to the upper end portion of the column 2 via the rotary shaft 4
And an eccentric shaft component 22 supported between the tailstock 8 and the shaft rod 9 of the tailstock 8.
Are arranged close to each other so as to face the outer peripheral surface of the.

The rotation detecting sensor 18 and the brake motor 3 are connected to a sequencer 24, and the eccentricity detecting sensor 20 is connected to a first amplifier 23a and a second amplifier 23b of an amplifier 23, respectively, as shown in FIG. Second amplifier
23b is connected to the sequencer 24.

The eccentric shaft component mounting / positioning device according to the present invention is constructed as described above, and the eccentric cylindrical portion 22a of the eccentric shaft component 22 is attached to the rotary shaft 4 on the support column 2 side and the shaft rod 9 on the tailstock 8 side. The eccentric direction of the eccentric shaft component 22 can be detected by rotating coaxially while being supported by and.

That is, first, the brake motor 3 is driven to rotate the transmission gear 5 once at a low speed. At this time, the rotation detection disk 6 also makes one rotation, and the rotation detection sensor 18 detects this and inputs the signal to the sequencer 24, and the sequencer 24 outputs a stop signal to the braked motor 3 to stop.

In this first rotation, the eccentric shaft part 22 also makes one coaxial rotation, the eccentricity detection sensor 20 detects the eccentric direction of the eccentric shaft part 22 as a peak value (A), and the detection signal thereof is amplified by the amplifier 23. It is input to the first amplifier 23a and stored.

Next, the second rotation is started, and with this rotation, the detection signal from the eccentricity detection sensor 20 is input to the second amplifier 23b of the amplifier 23 in real time, and the detection value is detected by the second amplifier 23b. The difference AB between (B) and the peak value (A) is calculated, and the difference is 0 (zero).
Then, from the second amplifier 23b to the sequencer 24
The sequencer 24 outputs a stop signal to the motor 3 with a brake to stop.

In this way, it is found that the location of the calculated value AB = 0 is the eccentric direction of the eccentric shaft part 22. Therefore, even if the eccentric amount of the eccentric shaft component 22 is as small as 1 mm or less, the eccentric direction can be accurately detected.

In this case, since the eccentric direction of the eccentric shaft component 22 is always aligned at a fixed position, if that position is held and taken out, and if it is sent to an assembling machine (not shown) for immediate mounting, an assembly error will occur. This eliminates the need for marking in the eccentric direction of the eccentric shaft component 22 unlike the conventional case.

[0023]

As described above, according to the present invention,
Even if the amount of eccentricity of the eccentric shaft part is minute, the eccentric direction can be accurately detected, and the eccentric direction can be aligned at a fixed location. It has an excellent effect that it can be incorporated in precision.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention.

FIG. 2 is a side view of the same.

FIG. 3 is a plan view of the same.

FIG. 4 is a block diagram of the main part.

[Explanation of symbols]

1 ... base, 2 ... support, 3 ... motor with brake,
4 ... Rotary shaft, 5 ... Conduction gear, 6 ... Rotation detection disc, 7 ... Timing belt, 8 ... Tailstock, 9 ... Axis rod, 10 ... Guide rail, 11 ... Stay, 12 ... Adjusting screw, 13 ... Engaging piece, 14 ... Coil spring, 15 ... Stopper pin, 16 ... Stopper piece, 17 ... Stay, 18 ... Rotation detecting sensor, 19 ... Mounting bracket, 20 ... Eccentricity detecting sensor, 21 ... Mounting bracket, 22 ... Eccentric shaft article, 22a ... eccentric cylinder part, 23 ... amplifier, 23a ... first amplifier, 23
b ... second amplifier, 24 ... sequencer, 25 ... control device

Claims (1)

(57) [Scope of utility model registration request] 1. A motor with a brake for coaxially rotating a rotation detecting disk and an eccentric shaft component is provided, and a rotation detecting sensor is provided close to the rotation detecting disk.
An eccentricity detection sensor is provided close to the eccentric shaft part, and a first amplifier connected to these sensors to store the peak value of the eccentricity detection in the first rotation, and the peak value and the eccentricity measurement value in the second rotation. A positioning device for mounting an eccentric shaft part, characterized in that a control device comprising a combination of a second amplifier for stopping the motor with a brake when a predetermined value is obtained and a sequencer is calculated. .