JPH0750013B2 - Dynamic imbalance correction device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a dynamic imbalance correction device, and more particularly to a technique for displaying a work status when a plurality of holes are punched in the balance correction.

B. Prior art In the balance correction work of the dynamic unbalance correction device, when the ratio of the unbalance amount to the total weight of the work is large,
Disperse the holes for correcting the balance in multiple places.

In particular, when correcting the balance of a thin work piece, it is difficult to make a hole having a large diameter, and therefore a plurality of holes are often made.

When performing multiple drilling operations, accurately calculate the total number of modified holes to be drilled, the number of holes actually drilled by the drill of the drilling machine (drilling machine) (hereinafter referred to as the number of processed holes), and the remaining number of holes. You need to know.

Conventionally, in such a balance correction work, an unbalance amount (weight) A ₀ obtained by a dynamic balance tester is divided by a unit correction amount (weight) c ₀ that can be corrected by one drilling work. If, as a result, N ₀ = A ₀ / c ₀ has a number below the decimal point, it is artificially operated to find the total number of modified holes (integer) N (by using head calculation, handwriting or a desktop calculator). Calculation used).

The total number N of corrected holes is remembered by the head, the number of processed holes K is grasped by visually observing holes already drilled in the subsequent drilling work, and the number of processed holes is calculated from the total number N of corrected holes in the head. The number of remaining holes Z is calculated by subtracting K, and the remaining number of holes Z is remembered by the head before the next drilling work.

Then, the drilling work was carried out in the above procedure, and the work was completed when it was considered that the number of remaining holes Z became zero.

Furthermore, since no mistakes must be made, it was confirmed whether or not the total number N of corrected holes remembered and the number K of processed holes at the time of completion match.

In addition, when deciding whether or not the actual cutting depth has reached the reference cutting depth when cutting one hole with a hole punching machine, visually check the moving amount of the pointer that moves in conjunction with the lowering of the drill from the scale. When it was judged that the read value coincided with the reference cutting depth, the drill was restored and the cutting was stopped.

C. Problems to be Solved by the Invention However, in such work, artificial calculation and storage of the total number N of corrected holes, visual confirmation and storage of the number K of processed holes, and artificial calculation of the number Z of remaining holes However, there is a problem that the mental burden on the worker for the final visual confirmation is very heavy, the work efficiency is lowered due to fatigue, and the work error is induced.

In addition, when reading the moving amount of the pointer from the scale, it is easy to make a reading error, or if the height of the eyes is a little off, an error may occur in the read moving amount. As described above, it is difficult to perform cutting according to the standard cutting depth, and the accuracy of balance correction is low in the end.

The present invention has been made in view of such circumstances, and an object thereof is to reduce the burden on the worker and to improve the work efficiency and workability.

D. Means for Solving Problems The present invention has the following configuration in order to achieve such an object. An example of the configuration is shown in FIG. 1 and described.

That is, the dynamic unbalance correction device of the present invention is the input means 1 for the unit correction amount c ₀ by one drilling operation, the unbalance amount A ₀ measured by the dynamic balance tester 2 and the unit correction amount.
First calculation means 3 for calculating the total number N of corrected holes based on c ₀
And a second calculation means 4 for calculating the reference cutting depth d based on the unbalance amount A ₀ and the unit correction amount c ₀ .

Further, the cutting depth detecting means 5 for detecting the actual cutting depth D (t) by the drilling machine and the actual cutting depth D (t) are compared with the reference cutting depth d to determine whether they match. Judgment means 6
And a cutting completion indicator 7 that operates according to the coincidence signal S _{1 from the} determination means 6.

Moreover, a drilling operation completion detecting means 8 which operates every completion of one drilling operation, one of the modified bore total number N for each drilling operation completion signal S ₂ from the drilling operation completion detecting section 8 Third to calculate the current remaining hole number Z (t) by subtraction
The calculation means 9, the storage means 10 for storing the remaining number of holes Z (t), and the remaining number of holes display means 11 for displaying the remaining number of holes Z (t) are provided.

E. Operation The operation of the configuration of this invention is as follows.

The first calculation means 3 calculates the total number N of corrected holes based on the unit correction amount c ₀ input by the input means 1 and the unbalance amount A ₀ input from the dynamic balance tester 2. The third computing means 9 sends a drilling operation completion signal S ₂ from the drilling operation completion detecting means 8.
Each time, the present number of remaining holes Z (t) is calculated by subtracting 1 from the total number N of corrected holes. The storage means 10 has this remaining number of holes Z
(T) is stored, and the remaining hole number display means 11 displays the remaining hole number Z (t).

Therefore, the operator only needs to look at the remaining hole number display means 11 to confirm the number of remaining holes Z (t), and the artificial calculation, storage, and processing of the total number of corrected holes, which is conventionally required. Eliminates the need for visual confirmation of the number of holes completed, storage, artificial calculation of the number of remaining holes, and final visual confirmation.

The second computing means 4 calculates the reference cutting depth d based on the unbalance amount A ₀ and the unit correction amount c _0, and the cutting depth detecting means 5 calculates the actual cutting depth D (t by the drilling machine. ) Is detected. When the actual cutting depth D (t) matches the reference cutting depth d, the judging means 6 outputs the coincidence signal S ₁ and operates the cutting completion indicator 7.

Therefore, in order to know the time when the actual cutting depth D (t) becomes the reference cutting depth d, it is only necessary to wait for the cutting completion indicator 7 to operate. It means that the cutting is just performed at the reference cutting depth d.

As a result, it becomes unnecessary to read the moving amount of the pointer from the scale and to visually judge whether the read value matches the reference cutting depth as in the conventional case.

F. Embodiment Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 2 is a block circuit diagram of the dynamic imbalance correction device.

In FIG. 2, reference numeral 21 is a CP in a microcomputer.
U and 22 are ROM, and 23 is RAM. RAM23 is the storage means of FIG.
Corresponds to 10.

24 is the specific gravity σ of the workpiece W, the punching machine (drilling machine) 51 (4th
The radius r of the drill 58 which is a cutting tool (see the figure), the unit correction amount c ₀ given to the work by one drilling work by the drill 58, and other various data are input to the CPU 21, which is a keyboard. It corresponds to the input means 1.

A dynamic balance tester 25 outputs the measured imbalance amount A ₀ and the measured imbalance angle θ ₀ to the CPU 21.

26 is an analog type displacement detector such as a differential transformer, and the actual cutting depth D by the drill 58 for the work W
(T) is detected and corresponds to the cutting depth detecting means 5 in FIG. The displacement detector 26 is connected to the CPU 21 via the A / D converter 27.

28 is a limit switch for detecting that the drill 58 is at the upper limit position. When this switch is turned on, it means that one drilling operation has been completed, and the CPU 21 is given a drilling operation completion signal S
Output ₂ The limit switch 28 corresponds to the punching operation completion detecting means 8 in FIG.

The structures of the drill 58, the displacement detector 26 and the limit switch 28 will be described later (Fig. 4).

A D / A converter 29 converts a digital signal representing the absolute value of the remaining cutting depth ΔD (t) calculated by the CPU 21 into an analog voltage signal.

Reference numeral 30 is a V / F converter that converts a pulse signal having a frequency proportional to the analog voltage, and 31 is an up-down counter that counts up and down the pulse signal.

The remaining cutting depth ΔD (t) is the difference between the reference cutting depth D and the actual cutting depth D (t), and ΔD (t) = DD (t). The reference cutting depth D includes a standard reference cutting depth D ₀ and a corrected reference cutting depth D ′, which will be described later.

The signal line 32 connected from the CPU 21 to the up / down counter 31 outputs a positive / negative signal of the remaining cutting depth ΔD (t). When the remaining cutting depth ΔD (t) is positive, the up / down counter 31 is in the up-counting state. When the remaining cutting depth ΔD (t) is negative, the down-counting state is set.

33 is a multiplexer, 34 is a remaining cutting depth indicator (level meter) in which a plurality of LEDs 34 ₁ to 34 _K are linearly arranged.
Is.

The remaining cutting depth indicator 34 displays the remaining cutting depth ΔD (t).
The speed of the sequential lighting of LEDs 34 ₁ to 34 _K is increased in proportion to the magnitude of the absolute value of, and the direction of the sequential lighting of LEDs 34 _{1 to} 34 _K remains, and when the cutting depth ΔD (t) is positive, Direction, and when the remaining cutting depth ΔD (t) is negative, the direction is left.

Reference numeral 35 is a first driver for driving the unbalance amount display 36, 37 is a second driver for driving the correction hole total number display 38, and 39 is a third driver for driving the remaining hole number display 40. Also 41
Is a fourth driver that drives the unbalanced angle display 42, 43 is a fifth driver that drives a drilling operation command display 44 that indicates that a drilling operation is in progress, and 45 is a sixth driver that drives a cutting completion display 46 Is.

The number-of-remaining-holes indicator 40 corresponds to the number-of-remaining-holes display means 11 of FIG. 1, and the cutting completion indicator 46 corresponds to the cutting completion indicator 7 of FIG. 47 is a main switch of the punching machine 51.

As shown in FIG. 3, on the display panel 48 of this dynamic imbalance correction device, the remaining cutting depth indicator 34, the unbalance amount indicator 36, the total number of corrected holes indicator 38, the number of remaining holes indicator is shown. 40, an unbalance angle display 42, a drilling operation command display 44, and a cutting completion display 46 are arranged.

The unbalance amount display 36, the total number of corrected holes display 38, the number of remaining holes display 40, and the unbalance angle display 42 are each configured with a segment display, and the drilling operation command display 44 and the cutting completion display 46 are It is configured with an arrow indicator.

FIG. 4 shows the structure of the punching machine 51.

In FIG. 4, 52 is a base on which the work W is placed, 53 is a stopper raised from the base 52, 54 is a main body, 55 is a vertical moving frame body attached to the main body 54 so as to be vertically movable,
56 is rotatably supported by the vertical moving frame 55,
A drill shaft that moves up and down together, 57 is a drill chuck, and 58 is a drill.

Reference numeral 59 is an operation lever for moving up and down the vertical moving frame 55, the drill shaft 56, the drill chuck 57 and the drill 58.

Reference numeral 60 is an upper horizontal plate fixed to the vertical moving frame 55, 61 is a lower horizontal plate, and 62 is a bolt connecting the upper horizontal plate 60 and the lower horizontal plate 61. The bolt 62 is screwed into the lower horizontal plate 61 and slidably penetrates through the upper horizontal plate 60. Drill 58
Penetrates the lower horizontal plate 61.

The upper horizontal plate 60 and the lower horizontal plate when fitted onto the bolts 62
A compression spring 63 is interposed between the compression spring 63 and 61. The lower horizontal plate 61 is configured to be received by the stopper 53.

A coil cylinder 26a of a differential transformer, which is a displacement detector 26, is fixed to the upper horizontal plate 60 in a vertical posture, and a magnetic rod is attached to the coil cylinder 26a.
26b is slidably inserted. A support plate 64 supporting the lower end of the magnetic rod 26b is provided with a screw 65 and a lock nut on the lower horizontal plate 61.
It is attached in a state where the height position can be changed by 66 and.

The chuck position of the drill 58 with respect to the drill chuck 57 is adjusted so that the tip of the drill 58 contacts the work W when the lower horizontal plate 61 is received by the stopper 53, and at this time, the output of the displacement detector 26 is zero. The height position of the support plate 64 is adjusted so that it becomes a point.

A limit switch 28 is attached to the main body 54 and is turned on by being pressed by the upper horizontal plate 60 when the drill 58 returns to its upper limit position.

The first calculation means 3 for calculating the modified bore total number N based on the unbalance amount A ₀ and unit correction amount c _0, a reference cutting depth D based on the unbalance amount A ₀ and unit correction amount c ₀ The second calculation means 4 for calculating the actual cutting depth D (t), the judging means 6 for comparing the actual cutting depth D (t) with the reference cutting depth D to determine whether they match, and the total number N of corrected holes for each drilling operation completion signal S _2. The third calculation means 9 for calculating the current remaining hole number Z (t) by subtracting 1 from 1 is realized by software by a microcomputer (CPU21, ROM22, RAM23).

Fig. 5 shows the unbalance amount measured by the dynamic balance tester 25.
A vector of A ₀ and a plurality of vectors A _{1 to} A _N obtained by decomposing this vector are shown. θ ₀ is an unbalanced angle with respect to the reference direction.

Sixth modification hole H ₁ to H _K to drill for illustration in the direction of the decomposed vectors A ₁ to A _N balance in the work W modification
Indicates the position of.

Next, the operation of this embodiment will be described based on the flowchart of FIG.

In step S1, the radius r of the work W input from the keyboard 24 is read and stored in the RAM 23. The specific gravity σ of the work W input from the keyboard 24 is read in step S2 and RAM2 is read.
Store in 3. In step S3, the unit correction amount c ₀ input from the keyboard 24 is read and stored in the RAM 23.

In step S4, the unbalance amount A ₀ is read from the dynamic balance tester 25 and stored in the RAM 23. In step S5, the unbalance angle θ ₀ is read from the dynamic balance tester 25 and stored in the RAM 23.

In step S6, an integer N that satisfies the inequality N−1 <A ₀ / c ₀ ≦ N is calculated. This N is the total number of correction holes.

The total number N of correction holes needs to be an integer. But A ₀ / c ₀
Is not necessarily an integer. Therefore, it is to an integer N to advance the decimal values of A ₀ / c _0.

In step S7, the total number N of corrected holes is stored in the total number register R ₁ . In step S8, set the reference cutting depth D ₀ corresponding to the unit correction amount c ₀ , Calculate by Here, V (r) is the cutting volume including the conical cutting part by the tip of the drill 58.

Now, when all _N correction holes H _{1 to} H _N are drilled with the unit correction amount c ₀ , the total balance correction amount is c ₀ × N, and c ₀
× becomes a N ≒ A _0, an error occurs in correction of the desired unbalance amount A _0.

Therefore, to correct the plurality of modified holes H ₁ to H 2 one modification holes H _1, H _N unit correction amount c of the ends of the _N '. That is, Then, the total balance correction amount is c ₀ × (N−2) + c ′ × 2 = A ₀ , which is equal to the unbalance amount A ₀ . The calculation of this equation is performed in step S9.

The reference cutting depth D'corresponding to the unit correction amount c'corrected in step S10 is Calculate by

In step S11, the total number of corrected holes N is set in the register R ₂ for the number of remaining holes.
To store. In other words, the number of remaining holes Z (t) = the total number N of corrected holes in the initial state where no drilling work is performed.

In step S12, it is determined whether the content of the register R ₂ for the number of remaining holes, that is, the number of remaining holes Z (t) matches the content of the register R ₁ for the total number, that is, the total number N of corrected holes.

In the case of conflict proceeds to step S13 the contents of the register R ₂ for the remaining number of holes to determine whether "1", the unit fixed in the register R ₃ for cutting depth reference proceeds to step S15 if NO The reference cutting depth D ₀ corresponding to the quantity c ₀ is stored.

If the determination in step S13 is YES, the process proceeds to step S14.
Even if the determination in step S12 is YES, the process proceeds to step S14. Step S14 In a corrected reference cutting depth D 'be stored in the register R ₃ for cutting depth reference.

That is, when the number of remaining holes Z (t) is N and the cutting operation has not been performed once, and when the number of remaining holes Z (t) is "1" and the last cutting operation is about to be performed, the register R is used. _The corrected reference cutting depth D'is stored in _3, and the reference cutting depth D ₀ is stored in the register R ₃ when the number of times of cutting is 2 to (N-1).

Now, when trying to cut the _first correction hole H ₁ , R ₂
← Because N is stored, after storing the corrected reference cutting depth D 'in the register R ₃ for willing cutting depth reference to step S14 determines YES in step S12, step
Go to S16.

In step S16, the first driver 35 is driven to display the unbalance amount A ₀ on the unbalance amount display 36. Fourth in step S17
The driver 41 is driven to display the unbalance angle θ ₀ on the unbalance angle display 42.

In step S18, the second driver 37 is driven to display the contents of the total number register R ₁ , that is, the total number N of corrected holes on the corrected hole total number display 38. The display of the total number N of correction holes continues until the balance correction work is finally completed, and the displayed numerical value N does not change.

Drives the third driver 39 in step S19 to display the contents that is, the number of remaining hole in the register R ₂ for the remaining number of holes Z (t) to the remaining number of holes indicator 40. It goes without saying that the remaining number of holes Z (t) decreases as the drilling work progresses.

In step S20, the fifth driver 43 is driven, and the rightward arrow () is lit and displayed on the drilling operation command display 44. Upon seeing the lighting of the right-pointing arrow (), the operator moves the operation lever 59 of the punching machine 51 downward to start the punching operation.

When the operating lever 59 is moved down, the upper horizontal plate 60 and the displacement detector 26
The coil tube 26a and the drill 58 are lowered and the operating piece of the limit switch 28 is separated from the upper horizontal plate 60, whereby the limit switch 28 is turned off.

Since the magnetic rod 26b of the displacement detector 26 is supported by the support plate 64 and is not displaced, the coil tube 26a is relatively displaced with respect to the magnetic rod 26b, and the displacement amount is taken as the actual cutting depth D (t). CP
Input to U21.

In the next step S21, it is determined whether or not the flag F ₁ indicating that the limit switch 28 has been turned off is set to "1". First, it is determined to be NO and the process proceeds to step S22 to determine whether or not the limit switch 28 is turned off.

If the operation lever 59 has not been moved down and the limit switch 28 is not turned off, the process returns to step S16,
Steps S16 → S17 → S until limit switch 28 turns off
The routine of 18 → S19 → S20 → S21 → S22 → S16 is repeatedly executed.

Eventually, the limit switch 28 moves due to the downward movement of the operating lever 59.
Becomes YES determination in step S22 since the OFF, after the limit switch 28 proceeds to step S23 exit the foregoing routine is set to "1" to the flag F ₁ indicating that the OFF, the process proceeds to step S24.

In step S24, the actual cutting depth D (t) is calculated from the displacement detector 26 to A.
The remaining cutting depth obtained by subtracting the actual cutting depth D (t) from the contents of the cutting depth reference register R ₃ in step S25, that is, the corrected reference cutting depth D ′, is read via the / D converter 27. Calculate ΔD (t) = R ₃ −D (t).

At the time of the first cutting and the Nth cutting, the content of the register R ₃ is the corrected reference cutting depth D ′, and ΔD (t) =
D'-D (t).

Further, during the second to (N-1) th cutting, the content of the register R ₃ is the reference cutting depth D ₀ , and ΔD (t) = D ₀ −
It is D (t).

Since the actual cutting depth D (t) changes momentarily with the progress of cutting, the remaining cutting depth ΔD (t) also changes momentarily.

In step S26, the plurality of LEDs 34 ₁ to 34 _K of the remaining cutting depth indicator 34 are sequentially turned on at the frequency and direction depending on the absolute value of the remaining cutting depth ΔD (t) and the sign of the sign.

At the beginning, since the remaining cutting depth ΔD (t) is large, the frequency of sequential lighting is very high, and it seems that all the LEDs 34 _{1 to} 34 _K are continuously lighting due to the afterimage. Thereby, the worker recognizes that the cutting is in the initial stage.

In step S27, it is determined whether the limit switch 28 is ON. Since it is off at the beginning, step S
Proceed to 28.

In step S28, the remaining cutting depth ΔD (t) = D'-D
(T) or ΔD (t) = D ₀ −D (t) is determined to be negative. It is determined whether the cutting depth is D ′ or D ₀ or more. It's a decision.

If D (t) <0, the process advances to step S29 to turn off the display of the right-pointing arrow () on the drilling operation command indicator 44 to inform the operator that cutting is performed more than necessary.

In step S30, it is determined whether or not the remaining cutting depth ΔD (t) has become “0”, in other words, whether or not cutting has been performed up to a predetermined cutting depth D ′ or D ₀ .

If NO is determined whether the flag F ₂ indicates that the cutting of a predetermined depth is completed the routine proceeds to step S31 has been set to "1". In this case, since F ₂ = 0, it is determined to be NO, and the process returns to step S16 without executing step S33 (lighting of the left arrow ()).

And steps S16 → S17 → S18 → S19 → S20 → S21 → S24
→ S25 → S26 → S27 → S28 → S30 → S31 → S16 The routine is repeatedly executed.

Steps S22 and S23 are omitted because the flag F ₁ has already been set to “1” when the drill 58 is first lowered by the operating lever 59.
This is because it is set to.

As the cutting progresses, the actual cutting depth D (t) increases and the remaining cutting depth ΔD (t) decreases. Therefore, in the operation of step S26, the LEDs 34 _{1 to} 34 of the remaining cutting depth indicator 34 are operated. The cycle of the sequential lighting of _K becomes longer. This allows the operator to know the degree of cutting progress.

During the repeated execution of the above-described routine, the limit switch 28 may be turned on even though the cutting with the predetermined cutting depth D ′ or D ₀ is not completed. That is, the case where the drill 58 is returned to the origin position due to an operation error or some other reason.

In this case, the determination in step S27 is YES and step S3
In step 4, the flag F ₁ indicating that the limit switch 28 is turned off is reset, and in step S35 it is determined whether or not the flag F ₂ indicating that the cutting to the predetermined depth is completed is set to “1”.

However, since F ₂ = 0 remains, the number of remaining holes Z (t) is not counted down by -1 (R ₂ ← R ₂ -1 in step S37), and the process returns to step S12. , Repeat the drilling work from the beginning.

Since the remaining cutting depth ΔD (t) eventually becomes “0” by repeatedly executing the above-described routine, the determination at step S30 becomes YES, and the routine proceeds to step S32, where a predetermined cutting depth D ′ is obtained.
Or set the flag F ₂ indicating that the cutting of D ₀ is completed to “1”.

Sixth driver 45 drives the by cutting completion indicator 46 to the left arrow () lights displayed at step S33, indicating that the cutting of a predetermined cutting depth D 'or D ₀ has been completed the operator.

The operator who confirms the lighting display of the leftward arrow () moves the operation lever 59 of the punching machine 51 upward. This allows the drill
58 starts to come out of the correction hole, and the upper horizontal plate 60 tries to approach the operating piece of the limit switch 28.

After step S33, steps S16 → S17 → S18 → S19 → S20 → S21 → S24 → S25 until the limit switch 28 is turned on.
→ S26 → S27 → S28 → S30 → S31 → S33 → S16 The routine is repeated.

The reason why step S32 is omitted is that the flag F ₂ has already been set to “1”.

In this routine, the determination of step S30 becomes NO because the drill 58 is raised and the remaining cutting depth ΔD (t).
Is not "0". And step S31
Then, since the flag F ₂ indicating that the cutting to the predetermined depth is completed is set to "1", it is determined to be YES and the step S
Proceed to 33, and the left-pointing arrow () on the cutting completion indicator 46
Keep the lit display of.

If the drill 58 is not raised due to an operator's mistake during the repeated execution of the above-mentioned routine and the remaining cutting depth ΔD (t) remains in the state of "0", step S3
The operation of 0 → S32 → S33 is performed, but the display status does not change.

If the drill 58 is lowered further by mistake, step S2
The determination result in 8 is YES, the process proceeds to step S29, and the display of the right-pointing arrow () on the drilling operation command indicator 44 is turned off.

Further, in the operation in step S26, the direction of the sequential lighting of the LEDs 34 ₁ to 34 _K of the remaining cutting depth indicator 34 is reversed. As a result, the operator is notified of the error and the lifting operation of the drill 58 is prompted.

When the above routine is repeatedly executed, the remaining cutting depth Δ
Since D (t) is gradually increased, the plurality of LEDs 34 _{1 to} 34 of the remaining cutting depth indicator 34 are set in the operation in step S26.
The cycle of the sequential lighting of _K is gradually shortened to notify the operator that the drill 58 is being lifted.

Eventually, the upper horizontal plate 60 turns on the limit switch 28. Therefore, the determination in step S27 is YES and step S3
After 4, proceed to step S35.

Since the flag F ₂ indicating that the cutting to the predetermined depth has been completed is already set to “1” in step S32, the determination in step S35 becomes YES and the process proceeds to step S36.

In step S36, the display of the leftward arrow () on the cutting completion indicator 46 is turned off.

Then, the register contents of R ₂ for the remaining number of holes to minus one at step _{S37 (R 2 ← R 2 -1} ). This is register R ₂
In addition, the number of remaining holes (Z (t) −1) that is one smaller than the previous number of remaining holes Z (t) is stored.

Then, reset the flag F ₂ indicating that the cutting of a predetermined depth is completed in step S38, the register for the remaining number of holes R ₂
Judge whether the contents of "0" have become "0". That is,
To determine whether cutting of all modifications hole H ₁ to H _N has been completed.

If NO, the process returns to step S12, and first step S
Based on the number of remaining holes Z (t) newly stored at 37, the same operation as described above is repeated.

In cutting the _second correction hole H ₂ , steps S12, S13
Any of the determination process proceeds to step S15 becomes NO, and stores the reference cutting depth D ₀ corresponding to the unit correction amount c ₀ in the register R ₃ for cutting depth reference. In this case, the calculation in step S25 is ΔD (t) ← D ₀ −D (t).

From the third correction hole H ₂ to the (N-1) th correction hole H _N-1
Is also the same.

In cutting the last Nth corrected hole H _N , the number of remaining holes Z (t) is “1”, so the determination in step S13 is YES, the process proceeds to step S14, and the cutting depth reference register R is used.
_The corrected reference cutting depth D'is stored in 3. In this case, the calculation in step S25 is ΔD (t) ← D'-D
(T).

The cutting of the last Nth correction hole H _N is completed, the limit switch 28 is turned on, and the steps S27 to S34 → S35 → S are performed.
When the process goes to step S37 via 36, the result of the operation of (R ₂ ← R ₂ −1) of the register R ₂ for the number of remaining holes is R ₂ = 0, so the process proceeds from step S 39 to step S 40 and the hole is drilled Turn off the main switch 47 of the machine 51 to stop the rotation of the drill 58,
A series of step operations is completed.

As is clear from the above description of the operation, the total number N of corrected holes is calculated and stored, the number Z (t) of remaining holes is calculated, the memory is updated, and the reference cutting depth D ₀ and the corrected reference cutting depth D ′ are stored. Calculation,
Since the memory etc. are automatically stored, the work efficiency is greatly improved.

In addition, the progress of cutting is displayed by the change in the cycle of the sequence lighting of the plurality of LEDs 34 ₁ to 34 _K on the remaining cutting depth indicator 34, and the completion of cutting of a predetermined cutting depth D ′ or D ₀ is cut. Since the display is made by lighting the leftward arrow () on the completion indicator 46, the accuracy of the cutting depth is significantly improved.

A proximity switch may be used as the punching operation completion detecting means 8 instead of the limit switch 28. Also,
A pulse encoder may be used instead of the displacement detector 26 as the cutting depth detecting means 5.

As the remaining cutting depth indicator 34, a pointer rotating type meter may be used in place of the level meter formed by arranging a plurality of LEDs 34 ₁ to 34 _K in a row.

In the present invention, the remaining cutting depth indicator 34 is not always necessary and may be omitted. The point is that the remaining hole number indicator 40 and the cutting completion indicator 46 may be provided.

G. Effects of the Invention According to this invention, the following effects are exhibited.

Since the updated number of remaining holes is automatically displayed, the operator only needs to look at the remaining number of holes display means to confirm the number of remaining holes.

Therefore, it is not necessary to perform artificial calculation and storage of the total number of corrected holes, visual confirmation and storage of the number of processed holes, artificial calculation of the number of remaining holes, and final visual confirmation, which are conventionally required. Can be converted.

Also, since the fact that the actual cutting depth has reached the reference cutting depth is automatically notified, the operator only has to wait for the cutting completion informing device to operate. It is possible to eliminate the need to read from the scale and to visually judge whether the read value matches the reference cutting depth.

Moreover, when the cutting completion indicator operates, the cutting is performed exactly according to the reference cutting depth, and the cutting depth accuracy can be improved.

From the above, it is possible to significantly reduce the mental burden on the worker, improve the work efficiency, and perform the balance correction work with high accuracy.

[Brief description of drawings]

FIG. 1 is a block diagram showing an example of the configuration of the present invention. 2 to 7 relate to an embodiment of the present invention, FIG. 2 is a block circuit diagram of a dynamic imbalance correcting device, FIG. 3 is a front view showing a display panel, and FIG. 4 is a structure of a perforator. Fig. 5 is a front view of a partial fracture showing Fig. 5, Fig. 5 is a diagram showing the vector of the unbalance amount measured by the dynamic balance tester, and its decomposition vector. FIG. 7 is a diagram showing the positions of the holes, and FIG. 7 is a flowchart for explaining the operation. 1 ... Input means 2 ... Dynamic balance tester 3 ... First calculation means 4 ... Second calculation means 5 ... Cutting depth detection means 6 ... Judgment means 7 ... Cutting completion indicator 8 ... Drilling operation completion detecting means 9 ... Third calculating means 10 ... Storage means 11 ... Remaining number of holes display means 21 ... CPU 22 ... ROM 23 ... RAM (storage means) 24 ... Keyboard (input means) 25 …… Dynamic balance tester 26 …… Displacement detector (cutting depth detection means) 28 …… Limit switch (drilling operation completion detection means) 34 …… Remaining cutting depth indicator 36 …… Unbalance amount display Instrument 38 …… Total number of corrected holes indicator 40 …… Remaining number of holes indicator (remaining number of holes indicator) 46 …… Cutting completion indicator (cutting completion indicator)

Claims (1)

[Claims] 1. A first calculation for calculating the total number of corrected holes based on the unit correction amount input means for one drilling operation, the unbalance amount measured by a dynamic balance tester, and the unit correction amount. Means, second calculating means for calculating a reference cutting depth based on the unbalance amount and unit correction amount, cutting depth detecting means for detecting an actual cutting depth by a hole punching machine, and the actual cutting depth And a cutting completion indicator that operates according to a coincidence signal from the determining means, and a drilling operation completion that is performed each time one drilling operation is completed. The detecting means, a third computing means for calculating the current number of remaining holes by subtracting one from the total number of corrected holes for each of the drilling operation completion signals from the drilling operation completion detecting means, and the remaining number of holes are stored. Display the storage means and the number of remaining holes Ri dynamic imbalance correction device and a hole number of display means.