JPH0311417B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a motor vibration measuring device that can easily measure vibrations of a motor without attenuating them.

Conventionally, as shown in FIG. 1, when a motor M flows on a conveyor 1, the chuck 2 of the vertical mechanism grabs the motor M and moves it a certain distance in the vibration measurement process. And at the stopping point, a vibration sensor (a method that detects vibration displacement of the motor case without contact)
It was configured to measure the vibration of the motor M. This means that if it remains on conveyor 1, motor M
This is because the vibrations of the motor M are greatly attenuated when the motor M comes into contact with the conveyor 1, and therefore a mechanism is required to grasp the motor M and move it away from the conveyor 1 during measurement. Furthermore, there is a problem in that the vibrations of the motor M are greatly attenuated just by gripping the motor M.

As described above, in the conventional example, the chuck mechanism of the motor has two operations, ``grabbing'' and ``raising'', making it complicated and increasing the equipment cost.

The vibration of the motor is greatly attenuated by the motor's chuck force.

There was a drawback.

The present invention was proposed in view of the above points, and by supporting the motor with rubber, it is possible to eliminate the vertical mechanism and weaken the chuck force to accurately measure motor vibration without damping the motor vibration. The object of the present invention is to provide a motor vibration measuring device.

The present invention will be described below with reference to the drawings.

FIG. 2 shows an embodiment of the invention. In the figure, 11 is a first base, and this base 11 has a first cylinder 1.
2 is provided. 13 is a second base provided on the first base 11, and the first cylinder 1
A hole 13a is provided for guiding two vertically movable piston rods 12a. Note that although the first and second bases 11 and 13 are separate bodies, it goes without saying that they may be constructed as one piece.

Reference numeral 14 denotes a fixed base fixed to one end of the second base 13 via a fixing device 15 such as a screw, and a second cylinder 16 is provided on the outside of the fixed base 14. The piston rod 16a of the second cylinder 16 is slidably inserted into a hole 14a formed through the fixing base 14, and the tip of the piston rod 16a has a stepped portion 14b that slightly protrudes toward the outside of the inner wall surface of the fixing base 14. It can be protruded from the outside. Reference numeral 17 denotes a movable base that is disposed opposite to the inner wall surface of the fixed base 14 and is capable of sliding on the second base 13. 17a is a hole formed inside the movable table 17, and 18 is a chuck spring compressed in the hole 17a, one end of which abuts against the bottom of the hole 17a, and the other end of which abuts against a spring retainer 19. . The spring holder 19 is provided with a chuck force adjustment screw 20 that protrudes outward from the outer surface of the movable base 17, and the threaded portion 20a of the chuck adjustment screw 20 is fixed to the outer surface of the second base 13. positioning member 21
The spring retainer 19 is screwed into a corresponding threaded portion provided on the inner peripheral surface of the hole 21a, and by rotating the chuck force adjusting screw 20 by pinching the outer end thereof, the spring retainer 19 moves back and forth within the hole 17a. However, this allows the spring force of the chuck spring 18 to press against the movable base 17 to be adjusted.

22 is a first motor receiving rubber provided in a recess formed in the upper inner end of the fixed base 14;
is a second motor receiving rubber provided in a recess formed in the upper inner end of the movable table 17 corresponding to the recess of the fixed table 14, and is a second motor receiving rubber provided in a recess formed in the upper inner end of the movable table 17, and is similar to the first and second motor receiving rubber 22, 23. Flat metal foils 24 and 25 are provided at the upper inner end portions, respectively. In addition, these metal foils 24, 25, motor receiving rubber 22, 2
The upper surfaces of the fixed base 14 and the movable base 17 having the movable base 17 are flush with each other.

26 and 27 are fixed base 14 and movable base 17, respectively.
First and second holders are integrally connected to the fixed base 14 and the movable base 17 on the upper surface, and first and second chuck rubbers 28 and 29 are provided at the inner ends, respectively.
are provided, and metal foils 24, 2 on these chuck rubbers 28, 29 and motor receiving rubbers 22, 23 are provided.
The motor M is clamped and fixed via 5 or the like. Note that, for example, the second chuck rubber 29
A vibration measurement sensor 30 consisting of an eddy current displacement sensor or the like is elastically held in the housing, and when the motor M is turned on, the vibration measurement sensor 30 moves away from and faces the motor case, and detects the vibration of the motor M. It is configured as follows. Further, 31 is a pair of current-carrying terminals protruding from the motor M, and 32 is a pair of electrodes that can come into contact with and separate from the terminal 31, and are movable up and down.

FIG. 3 is a perspective view showing the motor vibration measuring device of the present invention set on a line through which manufactured motors M are sent out. That is, the conveyor 33 is mounted on a stand 34 in a floating state via, for example, an L-shaped fitting 25, and this conveyor 3
A part of 3 is cut out, and a stand 34 is placed in the cutout.
A motor vibration measuring device mounted above is disposed.

Next, the operation of the present invention will be explained.

When the motor M flows onto the conveyor 33, the second cylinder 16, which is normally ON and presses the movable base 17 against the spring force of the chuck spring 18, is turned OFF in the vibration measurement process. Movable stand 17
is moved toward the fixed base 14 by the force of the chuck spring 18. Therefore, the motor M mounted on the device is chucked by the first and second chuck rubbers 28 and 29. In this case, the first and second motor support rubbers 22 and 23 have metal foils 24 and 25 affixed to their surfaces to reduce damping of vibrations of the motor M and to improve wear resistance. There is. However,
When the motor M is turned on, the first cylinder 12 is turned on to fix the movable base 17, and pushes up the pin 12b provided above.
2b comes into contact with the bottom of the movable table 17,
The movable base 17 is fixed. Next, the electrode 32 descends and contacts the energizing terminal 31 of the motor M.
rotates. In this case, since the chuck rubber 29 holding the motor M is provided with a vibration measuring sensor 30, the vibration of the motor M is measured by the vibration measuring sensor 30.

When the measurement is completed, the first cylinder 12 is turned OFF.
Then, the movable base 17 is unfixed, and the second cylinder 16 is turned on to press the movable base 17. Therefore, the holder 27 and the chuck rubber 29 also move following the movable base 17, and the chuck of the motor M is released.

As described above, according to the present invention, a fixed base is fixed on one side, a movable base is provided on the other side, and the first cylinder fixes the movable base at a predetermined position. a base provided on the base; a second cylinder provided on the fixed base and capable of pressing the movable base; and a chuck spring provided on the movable base and urging the movable base toward the fixed base. Check the motor support rubber provided on the upper surface of the fixed base and the movable base, each having metal foil on the surface, and the motor attached to the holder provided above the fixed base and the movable base. first and second chuck rubber for
(a) Since there is no vertical mechanism and the structure is simple, the equipment cost is low.

(b) Since the chuck force can be reduced by the motor support rubber, damping of motor vibration can be reduced.

(c) If the motor support rubber is used alone, the wear life will be a problem for mass-produced machines, but since metal foil is attached to the motor support rubber, wear resistance can be increased without damping motor vibrations.

There are advantages such as

[Brief explanation of the drawing]

FIG. 1 is a conventional example, FIG. 2 is an embodiment of the present invention, and FIG. 3 is an explanatory diagram of the usage state of the same. DESCRIPTION OF SYMBOLS 11...First base, 12...First cylinder, 13...Second base, 16...Second cylinder, 18...Chuck spring, 22, 23...First, first 2 motor receiving rubber, 24, 25...metal foil, 28, 29...first and second chuck rubber,
30... Vibration measurement sensor, M... Motor.

Claims (1)

[Claims] 1. A base having a fixed base fixed on one side and a movable movable base on the other side, and a first cylinder for fixing the movable base in a predetermined position; a second cylinder provided on the fixed base and capable of pressing the movable base; a chuck spring provided on the movable base for biasing the movable base toward the fixed base; and the fixed base and the movable base. A motor receiving rubber provided on the upper surface and having a metal foil on the surface, and a first and second rubber motor for checking the motor attached to the holder provided above the fixed base and the movable base. A motor vibration measuring device comprising a chuck rubber and a vibration measuring sensor elastically held by the second chuck rubber.