JP2899674B2 - Rotating body balance display - Google Patents

Description

The present invention relates to a rotating body balance display device.

[Prior Art] Conventionally, as this type of apparatus, for example, JP-A-62-2188.
As shown in Japanese Patent No. 35, for the unbalance vector of the rotating body detected by the acceleration pickup,
There is a method of numerically displaying a mounting position of each balance piece such that a combined vector of a plurality of balance pieces mounted on the rotating body is balanced by an angle from a preset reference position.

[Problems to be Solved by the Invention] However, when performing a correction operation using the above-described device, an operator needs to measure an angle from the reference position with a protractor or the like in order to specify the attachment position of the balance piece. For this reason, there is a problem that the correction work takes time.

It is an object of the present invention to provide a rotating body balance display device that can easily perform a balance correcting operation.

[Means for Solving the Problems] That is, the rotating body balance display device of the present invention detects the unbalance amount of the rotating body and the position where the unbalance amount occurs based on the vibration of the rotating body, and detects the unbalanced amount of the rotating body. In a balance detection display device for specifying an unbalance vector, an annular position display unit regarded as a rotating body is provided, and the position display unit displays an arithmetically mounted position of a balance piece balanced with the unbalance vector. It is provided with a display and a display for displaying a position where the balance piece is actually attached.

[Operation] Since the position display section specifically displays the position where the balance piece should be attached, the operator can easily grasp the position.

With each display, it is possible to simultaneously display the calculated mounting position of the balance piece that balances with the unbalance vector and the position where the balance piece is actually mounted. In addition, due to the displacement between the display bodies, it is possible to easily understand which side in the circumferential direction and how much the balance piece actually attached to the rotating body should be moved and perform the position correction.

Hereinafter, a first embodiment will be described with reference to FIGS.

As shown in FIG. 1, a vibration detection sensor 4 for detecting the vibration of a grindstone 3 as a rotating body is attached to a grindstone head 2 of a surface grinder 1. An origin detection sensor 7 is installed on the table 5 via a stand 6, and detects a light reflecting plate 8 rotating together with the grindstone 3 and outputs an origin position signal of the grindstone 3.

On the other hand, the display device 9 connected to the vibration detection sensor 4 and the origin detection sensor 7 is provided with a display body 10 made of an LED at intervals of 10 ° so as to form an annular shape. I have. At the center of the position display unit 11, a numerical value display unit 12 is provided in two upper and lower stages, and an origin display body 13 is provided so as to correspond to the origin position. A vector key 14 and an instruction key 15 are provided below the position display section 11.

As shown in FIG. 2, a central processing unit (hereinafter, referred to as a CPU) 1 as a control means built in the display device 9.
Reference numeral 6 denotes each of the display units 11 and 12, keys 14 and 15, and RAM 17 and ROM 18.
Are connected to execute the following arithmetic processing and display processing.

Next, the work of correcting the balance of the grindstone 3 by the balance display device will be described with reference to FIG.

Grinding stone 3 without worker attaching balance piece
When the CPU 16 confirms the operation of the vector key 14 in step 1, the CPU 16 compares the pulse interval of the origin detection pulse output from the origin detection sensor 7 in step 2, and the rotation speed of the grindstone 3 is stabilized. Make sure that
Then, in step 3, the CPU 16 specifies and stores the unbalance vector X of the grindstone 3, and in step 4, as shown in FIG. 6, displays the maximum amount of unbalance on the numerical display section 12 in the upper stage. The occurrence position is displayed on the lower numerical display section 12, and the display 10 of the position display section 11 corresponding to the occurrence position is turned on.

When the unbalance vector X of the grindstone 3 is specified and displayed in this way, the operator re-drives the grindstone 3 after attaching one balance piece having a predetermined weight to the origin position of the grindstone 3. Subsequently, in step 5, when the CPU 16 confirms the operation of the vector key 14, in step 6, similar to the above,
After confirming that the rotation speed of the grindstone 3 has become stable, in the next step 7, the unbalance vector B of the grindstone 3 in this state is specified and stored, and in step 8, the amount of the unbalance vector B and the occurrence position Are displayed in the same manner as in step 4. This unbalance vector B is
As shown in FIG. 4, an unbalance vector X of only the grinding wheel 3 and a vector A of the balance piece are synthesized.

When the operation of the instruction key 15 is confirmed in step 9, the CPU 16 executes the calculation routine I in step 10. As shown in FIG. 5, this operation routine I specifies a pair of equal vectors that combine a balance vector C that balances the unbalance vector X, that is, a pair of vectors A1 and A2 generated by two balance pieces. The CPU 16 determines the unbalance amount x, the combined unbalance amount b, and the angle θ between the wheels 3 only based on the data of the unbalance amount x of the grindstone 3 specified in steps 3 and 7 above. To obtain the unbalance amount a of the balance piece itself. Then, based on the calculation result, the CPU 16
Is To calculate the angle γ between the balance vectors A1 and A2. Subsequently, based on the calculated angle γ and the angle α from the unbalance vector X to the origin position, the CPU calculates δ1 = α + γ-180 ゜ δ2 = α-γ-180 ° , The angles δ1 and δ2 from the origin are obtained.

As shown in FIG. 7, when the calculation routine I is completed, the CPU 16 displays the angles δ1 and δ2 on the numerical value display unit 12 in step 11 and the position display corresponding to the mounting angles δ1 and δ2. The display 10 of the unit 11 is turned on.

Then, based on these indications, the operator moves and adjusts the balance piece attached at the origin position to the position of δ1 degrees, and attaches another balance piece having the same weight as this to the position of δ2 degrees. Thereby, the whetstone 3
A balance vector C that balances the unbalance vector X is generated, and the unbalance of the grindstone 3 can be corrected.

As described above, in the balance display device of the present embodiment, the position where the balance piece is attached is specifically displayed by the position display unit 11, so that the position can be easily grasped.

Although the display 10 of the balance display device of the present embodiment merely plays a role of emitting light, for example, the display 10 is configured by an LED that selectively emits red and green, and one of the LEDs 10 emits light. The position at which the pair of balance weights are attached may be displayed in color, and the location where the unbalance amount is the largest may be displayed in the other color.

Next, a second embodiment will be described with reference to FIGS. Since the vibration detection sensor 4 and the like attached to the grinding machine have the same configuration as in the first embodiment, only the display device 21 will be described.

As shown in FIG. 8, a circular liquid crystal display 22 is provided on a display device 21 connected to the vibration detection sensor 4 and the origin detection sensor 7, and the display 22 has a position display unit 23 from the first position. The third display members 24, 25, and 26 are provided so as to form a triple ring, and each of the display members 24, 25, and 26 is formed of a segment in increments of 1 °. A numerical display 27 is provided at the center of the liquid crystal display 22, and an origin display 28 is provided by a segment corresponding to the origin position. Further, below the liquid crystal display 22, a vector key 29, an instruction key 30, and a display key are provided.
31 are provided.

As shown in FIG. 9, the CPU 32 as control means built in the display device 21 includes the display members 24-26, 28, the numerical value display unit 27, the keys 29, 30, 31 and the RAM 33 and the ROM 34. It is connected to execute arithmetic processing and display processing as described below.

Next, the work of correcting the balance of the grindstone 3 by the balance display device will be described with reference to FIG.

Steps 1 to 10 in the balance display device of this embodiment are the same as those of the above-described balance display device of the first embodiment. That is, as shown in FIG.
Indicates the maximum amount of unbalance in the grinding wheel 3 in a state where the balance piece is not attached in step 4 in the numerical display section.
27, the first display body 24 corresponding to the position of occurrence is actuated, and the maximum unbalance amount of the whetstone 3 with the balance piece attached to the origin position in step 8 is also displayed in the numerical display section. 27, the first display 24 corresponding to the position of occurrence is operated, and the arithmetic routine I is executed in step 10.

Then, as shown in FIG. 8, when the mounting position of the pair of balance pieces that balances with the unbalance vector is specified by the calculation routine I, the CPU 32 in step 11 corresponds to the mounting position of the pair of balance pieces. The second display 25 is actuated by a number corresponding to the circumferential length of the balance piece. That is, the second display 25
Are displayed in almost the same shape as the actual balance piece, making it easy to compare this display with the actual mounting position of the balance piece.

The operator shifts the position of the balance piece attached to the origin position to one of the attachment positions according to the two attachment positions displayed on the second display body 25, and removes another balance piece having the same weight as this. Attach to the other attachment position.

The operator restarts the grindstone 3, and in step 12, the CP
When U32 confirms the operation of the vector key 29, step 13
After confirming that the rotation of the grindstone 3 has become stable, the unbalance vector D after the balance correction is specified and stored in the next step 14 as shown in FIG. 11, and the unbalance amount d is determined in step 15. The first display body, which is displayed on the numerical value display unit 27 and corresponds to the occurrence position thereof
Activate 24. The operator determines whether or not the correction work is necessary again based on the unbalance amount d. If not, the series of correction work is ended. On the other hand, if the correction work is required, the display key 31 is used. Operate.

When confirming the operation of the display key 31 in step 16, the CPU 32 executes the calculation routine II in step 17. The calculation routine II specifies the positions of a pair of balance pieces actually attached to the grindstone 3 based on the unbalance vector D.

In this calculation routine II, the CPU 32 determines the amount of unbalance x, d and the data of the angle ε between the two, Is calculated to calculate the combined unbalance vector amount c 'of the pair of balance pieces. Based on this calculated value,
CPU32 Is calculated, and the error angle λ at the time of the previous balance correction is obtained. Subsequently, the CPU 32 Calculate the actual grinding wheel balance vector A
An angle γ ′ between 1 ′ and A2 ′ is calculated. Continue CPU32
Calculates δ1 ′ = α + γ ′ + λ−180 ゜ δ2 ′ = α−γ ′ + λ−180 ° based on the calculated angles λ and γ ′ and the angle α from the unbalance vector X to the origin position. And the actual mounting position of the balance piece, that is, the angles δ1 ′ and δ2 ′ from the origin, respectively.

Then, as shown in FIG. 8, in step 18, the CPU 32 moves the third display body 26 corresponding to the position of the balance piece specified by the calculation routine II to the balance piece in the same manner as the second display body 25. It operates by the number corresponding to the circumferential length of. Therefore, the position of the balance piece can be regarded as the position of the actually mounted balance piece, and how much deviation from the position of the balance piece that balances with the unbalance vector displayed on the second display 25. Will be shown.

The operator reads how much the balance piece of the third display body 26 is displaced from the balance piece of the second display body 25, and changes the position of the actual balance piece attached to the grindstone 3 accordingly. I do.

Thereafter, the program returns to step 12, and repeats the subsequent steps. As described above, the operator determines whether or not to perform a further correction operation based on the unbalance amount displayed on the numerical value display unit 27, and performs a series of balance correction operations when there is no need to perform re-correction. Terminate.

As described above, according to the balance display device 21 of the present embodiment, due to the displacement of the second and third display bodies 25 and 26, the position of the balance piece balanced with the unbalance vector and the actual mounting position of the balance piece are determined. Are relatively displayed, so that it is possible to easily know which side and how much the balance piece attached to the grindstone 3 should be moved and correct the position. In this case, there is no need to measure the mounting angle of the balance piece using a protractor or the like.

Further, a position display section of the balance display device 21 of the present embodiment.
Since the 23 segments are provided at intervals of 1 °, it is possible to easily and accurately grasp how many times the second and third display bodies 25 and 26 are misaligned.

Although the balance display devices of the first and second embodiments display the maximum unbalance amount on the numerical value display sections 12, 27, the balance piece is indicated by the display bodies 10, 25 of the position display sections 11, 23. It is only necessary to be able to display the position where the device should be attached.
Therefore, the numerical value display sections 12, 27 need not be provided.

Further, the position display units 11 and 23 of the balance display devices of the first and second embodiments are each configured by the LED and the liquid crystal display 22, but may be configured by a CRT, for example.

[Effects of the Invention] As described above in detail, according to the rotating body balance display device of the present invention, there is an excellent effect that the balance correction operation can be easily performed.

[Brief description of the drawings]

1 to 7 show a first embodiment of the present invention. FIG. 1 is a front view of a balance display device in use, FIG. 2 is a block diagram showing an electric configuration of the device, and FIG. Fig. 4 is a flowchart showing the progress of the grinding wheel balance correction work. Figs. 4 and 5 are vector diagrams corresponding to the arithmetic processing of the CPU. Fig. 6 is a front view showing a display unit displaying an unbalance vector. FIGS. 8 to 12 show a second embodiment of the present invention, in which a front view of a display unit displaying a mounting position of a balance piece is shown. FIG. 8 is a front view of a balance display device.
FIG. 9 is a block diagram showing the electrical configuration of the apparatus, FIG. 10 is a flowchart showing the progress of the grinding wheel balance correction operation, and FIGS. 11 and 12 are vector diagrams corresponding to the arithmetic processing of the CPU. 3 is a grinding wheel as a rotating body, 11 and 23 are position display sections, 12 is a numerical display section, 24 is a first display body, 25 is a second display body, 26 is a third display body, and X is unbalanced. vector.

────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takeshi Itatsu 1333-1, Atobe, Mugegawa-cho, Bugi-gun, Gifu Prefecture Inside Nagase Iron Works Co., Ltd. Field (Int.Cl. ⁶ , DB name) B24B 45/00

Claims (1)

(57) [Claims] 1. A balance display for detecting an unbalance amount of a rotating body (3) and a position where the unbalance amount occurs based on vibration of the rotating body (3) to specify an unbalance vector (X) of the rotating body. In the apparatus, an annular position display section (11, 23) regarded as a rotating body (3) is provided, and the position display section (11, 23) calculates a balance piece balanced with the unbalance vector (X). A balance display device comprising: a display (25) for displaying an upper mounting position; and a display (26) for displaying a position where a balance piece is actually mounted.