JPS5968638A - Automatic correcting device of balance - Google Patents

Abstract

PURPOSE:To automatize processes from measurement of an unbalance position and quantity to correction of them, by constituting a device with a mechanism rotating an object to be worked, a balancing device which detects the unbalance position and quantity, a rolling mechanism, a grinding mechanism and a controller. CONSTITUTION:An object 11 to be worked is rotated by a rotating mechanism 12, and the unbalance position and quantity are measured by a balancing device 13 and are inputted to a controller 17. A grinder 32 is allowed to coincide with the unbalance position of the object 11 and is shaked and rotated by a rolling mechanism 14, and a shaking table 24 is so positioned that the grinder 32 is placed in a prescribed position in a carrying direction. An air grinder 30 is moved in the cutting direction X, and the shaking at the time when the grinder 32 is brought into contact with the object 11 is detected by a sensor 34 to stop carrying of the grinder 32, and the grinder 32 is returned about 2mm. immediately. The grinder 32 is rotated, and the table 24 is carried 2mm. in the X direction, and the object is cut for the purpose of correcting the unbalance; and this process is repeated till the end of correction, and correction is confirmed by remeasurement.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device that automates the unbalance correction of a rotating body.

The rotor shafts and shafts of turbochargers, turbines, etc. need to be dynamically balanced to suppress vibrations during high-speed rotation and ensure smooth rotation.

The conventional method of correcting unbalance is to use a balancing machine lf: workpiece 2, as shown in Fig.
is mounted on a mounting stand 3 and rotated by a rotation mechanism (not shown) to measure the unbalance angle and unbalance weight, and after the measurement, the workpiece 2 is removed from the balancing machine and transferred to the workbench. This is done by manually grinding with a manual grinder based on the measurement results with a balancing machine.

The current situation is that the amount of correction is determined by the intuition and experience of the operator, and it takes several times of loading between the balancing machine and the workbench to complete the correction. Replacement work is required, which requires a large amount of man-hours, and there are also problems such as worker fatigue.

In addition, it is difficult to accurately correct the unbalanced position based on the measurement results of the balancing machine, and the dispersion in quality becomes severe. There is high hope for the development of a device that can automate the process.

The present invention has been made in view of such a need, and an object of the present invention is to provide an automatic balance correction device that can be fully automated from measurement of unbalance position and amount to correction 1. The configuration of the present invention that achieves this object 'f' includes: a balancing device fff that is equipped with a rotation mechanism that drives the workpiece in full rotation and is capable of detecting the unbalanced position and amount of unbalance of the workpiece; a rolling mechanism attached to the mechanism and capable of swinging and rotating the workpiece at a predetermined angle in forward and reverse directions;
A grinding mechanism that is attached to a sliding table movable in the axial direction of the workpiece and a direction perpendicular thereto and that finely defines the workpiece, and an unbalance position and unbalance detected by the balancing device. A control signal is output to the rolling mechanism based on the input signal to determine the unbalance position 1? The % characteristic is that it consists of a control device that causes rolling around the center of tk and outputs all control signals to the grinding mechanism to grind by a predetermined amount.

An embodiment of the present invention is shown below in Figure II! Based on 1, I will explain 1 wholesale 1.

The automatic balance correction device of the present invention has an external appearance of its main parts.
As shown in FIG. 2 representing the phase c and FIG. 3 representing the phase 'u@ configuration, a rotation mechanism 12' that rotationally drives the workpiece 11 is used.
The balancing device 13 is equipped with an fc device that can detect the unbalanced position and unbalanced time of the workpiece 11, and its configuration is exactly the same as that of the existing balancing machine, so the explanation will be omitted. A rolling mechanism 14 is installed in this balancing device #13 to swing and rotate the workpiece zzH by a certain angle in the forward and reverse directions. This rolling gear, It structure I4 is the rotating mechanism 1
The rolling motor 16 is connected to the shaft end of the second motor 15 via a clutch or the like, and the unbalanced position (usually expressed as an angle from a reference point) can be detected by controlling the rolling motor 16 with the control device fft17. It performs rocking rotation (rolling) by alternating forward and reverse rotations at a predetermined angle around the center. An angle setting device 18 is provided in the control device 17 to set the angle of oscillating rotation between the
In addition, a speed setting device 19 is also provided to set the speed of the oscillating rotation. On the other hand, an angle detector 21 is installed on a support base 20 that supports the center of the tip of the workpiece 11 in order to detect the swinging and rotating angle, and a detection signal is sent to the control device 17.
will be given feedback.

Next, a "grinding mechanism 22v" provided in the balancing device 13 to grind the workpiece 11 oscillated and rotated around the unbalanced position by a predetermined amount,
It has a sliding table 24 that can slide on the balancing table 23 of No. 13 in the axial direction of the workpiece 11, that is, in the cutting direction X, and in the direction perpendicular thereto, that is, in the feeding direction Y. The feed drive is performed by a cutting feed shaft 25 and a low speed/low inertia motor 26 that is directly connected to this and controlled by a control device 17, and the sliding table 24 is
An inductosin scale 27 for position detection is installed on the end face of the inductor, and its detected value is input to the control device 17. This feeding drive in the cutting direction X is configured so that positioning is not performed and the minimum movement amount I'L is 1 μ by a signal from a cutting amount setting device 28 provided in the control device 17. Also, regarding the feed direction Y, the feed screw 2
9. By manually rotating it, it can be adjusted to match the diameter of the workpiece. And the sliding table 24 with
An air grinder 30 is attached to the upper surface of the rotor through a bracket 31, and is connected to an air supply device (not shown) through a 7E solenoid valve so that the rotation stop can be controlled by a control device 17. At the tip of the air grinder 30, a leaf spring is installed to amplify vibrations in order to detect the machined surface from the vibrations generated when the grindstone 32 comes into contact with the workpiece 11.
A detector fixture 33 in the form of an IJ song is provided, and a vibration sensor 34 is attached to this detector fixture 33 so that a detection signal is input to the control device 17.

Next, the correction work performed by the automatic balance correction device and the functions of the control device will be explained.

First, the workpiece 1 is added to the balancing device 13,
It is rotated by the rotating mechanism 12 to measure the unbalance position and unbalance amount and input them to the feeding control device I7. Thereafter, the workpiece 11 is rotated and stopped by the rotation mechanism 12 until the unbalance position matches the position of the grindstone 32, and the rolling motor J
6, the master workpiece 11 is rotated in full swing by rotating forward and reverse by a predetermined angle around the unbalanced position. At the same time, the slide table 24 is moved and positioned by the feed screw 29 so that the position of the grindstone 32 in the feed direction Y is set to a predetermined position [7]. Then, the air grinder 30 is connected to the motor 17, and the moving base 24 is connected to the low speed/low inertia motor 26.
The grinding wheel 32 is moved in the cutting direction . In this way, with the grinding wheel 32 completely in a non-contact state, air is supplied to the air grinder 30 via the solenoid valve, the grinding wheel 32 is fully rotated, and the sliding table 24 is moved 2-2 in the cutting direction X.
For example, for sending and rolling once more,
Grinding is performed to correct the unbalance while applying a depth of cut of about 5μ, and the depth of cut is repeated until the depth of cut for the unbalance M-, which is programmed in advance, is reached. Note that this cut is performed only when cutting the lower part. In this way, after the unbalance correction by grinding is completed, the sliding f=f
24 k Send in the direction opposite to the cutting direction and retreat to stop the air grinder 3° and stop rolling.

After this, unbalance measurement was performed again and the value was 7IX.
All work is completed after confirming that the value is below the predetermined value v. Of these series of manufacturing steps, all of the steps except for mounting and removing the workpiece 11 and positioning the grindstone 32 in the feeding direction y are controlled by the control device 7 to correct the imbalance. ni) Now.

In the above HQ embodiment, an air grinder is used as the grinding mechanism, but other types may be used.

Since the imbalance can be corrected in this way, automation can be achieved and the man-hours can be significantly reduced. 1. Unbalance measurement and correction can be carried out just by setting the workpiece once, which reduces setup time and significantly improves work efficiency, and eliminates the need for transfer, reducing worker fatigue. You can free yourself from working in harsh environments. 1
However, because it is mechanized without depending on the intuition or experience of the operator, there is less variation in quality and accuracy is improved.

In addition, girder construction is simple and equipment costs are low.

[Brief explanation of drawings]

FIG. 1 is a perspective view of the main parts of a conventional balancing machine, and FIGS. 2 and 3 are perspective views and schematic diagrams of the main parts of an embodiment of the automatic balance correction device of the present invention. It is. In the first aspect, 110 workpiece, 12 rotation mechanism, 13 balancing device, 14 rolling mechanism, 16 rolling motor, 17 control device, 22 grinding mechanism, 24 i'i' borrowing table, 30 is an air grinder. Patent applicant: Mitsubishi Heavy Industries Tate Co., Ltd. Representative Patent Attorney Shibe Mitsuishi (1 person) Figure 1 1 Figure 43

Claims (1)

[Claims] It comprises a rotating mechanism for rotationally driving the workpiece (a balancing device capable of detecting the unbalanced position and unbalance amount of the workpiece using a lever, and the rotating machine ff'f K
A rolling mechanism is installed to swing and rotate the workpiece at a predetermined angle in forward and reverse directions, and a sliding table is attached to a sliding table movable in the axial direction of the workpiece and in a direction perpendicular thereto. 71. detected by the grinding mechanism that performs grinding and the balancing device; The unbalanced position and the unbalanced claw are input, and based on the input signals, a control signal is output to the rolling mechanism to roll the unbalanced position to the middle r9, and a full control signal is output to the grinding mechanism to grind a predetermined amount. The balance automatic correction device is entirely characterized by consisting of a control device.