JP3156322B2 - Dynamic balance test equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dynamic equilibrium test apparatus for correcting a detected unbalance of a rotating workpiece by, for example, machining with a cutting tool or the like. , It can be corrected with high accuracy even when it is nonlinear.

[0002]

2. Description of the Related Art Conventionally, dynamic fishing that detects an unbalance amount of a rotating work, feeds a cutting tool by an amount corresponding to the detected unbalance amount, cuts a part of the work, and corrects the unbalance. Testing devices are known. In this type of conventional dynamic balance test apparatus, a table is provided with a graph in which the unbalance correction amount with respect to the cutting depth of the work is associated in a linear relationship, and the table is looked up based on the detected unbalance amount. Then, the cutting depth is calculated, and the feed amount is calculated from the cutting depth.

[0003]

However, depending on the type of work or tool, there is a case where the cutting depth and the correction amount do not have a linear relationship, and in the conventional apparatus where the cutting depth and the correction amount are not linearly associated. However, if an error occurs between the cutting depth and the correction amount, and the amount of one work correction is too small, the unbalance correction work will not be able to complete the imbalance once, and time will be required for the unbalance correction work. There is a problem in that if the amount of work corrected at one time is too large, the work becomes defective.

An object of the present invention is to improve the efficiency of the unbalance correction work even when the cutting depth and the work correction amount have a non-linear relationship, and to reduce the ratio of defective products by dynamic balancing. To provide a test device.

[0005]

In order to explain the present invention, a rotating means 101 for rotating a work W and an unbalance amount detecting means 102 for detecting an unbalance amount of the rotating work W will be described with reference to FIG. Processing means 104 for cutting the part of the work W by bringing the tool 103 close to the work W in accordance with a predetermined feed amount command value in order to correct the unbalance amount, and correcting the cutting depth and the unbalance of the tool 103 Storage means 105 for storing a graph in which the amounts are associated in a non-linear relationship; and calculating means 106 for calculating the cutting depth of the tool using the graph from the unbalance correction amount corresponding to the detected unbalance amount. And a feed amount command value corresponding to the calculated cutting depth is sent to the processing means 104, thereby achieving the above object. Further, in the dynamic balance testing apparatus according to the second aspect, the correcting step of the unbalance amount is repeated a plurality of times, the first unbalance correction amount is stored, and the second cutting depth by the calculating means 106 is calculated. The calculation is configured to be obtained from the graph using a value obtained by adding the first unbalance correction amount and the second unbalance correction amount.

[0006]

The cutting depth is calculated from the unbalance correction amount corresponding to the detected unbalance amount using a graph in which the cutting depth by the tool 103 and the unbalance correction amount are associated in a nonlinear relationship. . The feed amount command value corresponding to the calculated cutting depth is sent to the processing means 104, and the work W is processed to correct the unbalance amount. In the apparatus according to the second aspect, when the step of correcting the unbalance amount is repeated, for example, twice, the first unbalance correction amount is stored, and the first unbalance correction amount and the second unbalance correction amount are added. The second cutting depth is obtained from the graph using the obtained value.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment will be described with reference to FIGS. FIG. 2 is a diagram showing the entire configuration of the dynamic balance test device.
A work rotating motor 11 is provided in the tester main body 10, and the work holding disk 12 is rotated by the motor 11.
The motor 11 has a built-in sensor for detecting its rotational angle position. The tester main body 10 also includes a processing device 20 for cutting the workpiece W. The processing device 20 includes an end mill cutter 21 and a motor 2 that rotationally drives the cutter 21.
2 and a moving mechanism 23 for moving the cutter 21 toward and away from the workpiece W. The moving mechanism 23 includes a nut 25 provided in a housing 24 that holds the cutter 21,
A screw feed rod 26 threadedly engaged with the nut 25; the screw feed rod 26 is rotated by a tool feed motor 27 so that the cutter 21 is separated from and brought into contact with the work W;
1 is set at a predetermined position with respect to the work W. further,
The cutter 21 is configured to be movable by a mechanism (not shown) in a direction orthogonal to the cutter separating / contacting direction.

The tester main body 10 is provided with a pickup 31 for outputting a signal corresponding to the amount of unbalance of the work W, and a proximity switch 32 for outputting a detection signal when facing the specific position of the work W. These pickups 31
The output signal of the proximity switch 32 is input to the dynamic balance measuring device 33. The dynamic balance measuring device 33 calculates the unbalance amount of the workpiece W based on the input signal from the pickup 31, and detects the unbalance position as the rotation angle based on the signal from the proximity switch 32. When it is necessary to correct the component force of the work W, the respective correction amounts divided into two axes are calculated.

In FIG. 2, reference numeral 40 denotes a sequence control device, which stores a graph 41 associating correction amounts and cutting depths as shown in FIG. 3, and an input imbalance amount as a correction amount. , A computing device 42 for calculating a cutting depth from the graph of FIG. 3, a sequencer CPU 43 for performing a dynamic balance test according to a procedure, and a sequencer CPU 43.
43, the rotation amounts of the work rotation motor 11 and the tool feed motor 27 are controlled by the respective servo amplifiers 44 and 45.
Servo positioning module 46 controlled through
47 is provided.

The graph shown in FIG. 3 is called a correction pattern, and a plurality of types of correction patterns can be stored in the memory 41. In this graph, the horizontal axis represents the correction amount (g), and the vertical axis represents the cutting depth (mm) of the cutter 21. As the correction amount, x ₁ , x ₂ ,..., X ₅ , x ₆ set the six values, y ₁ respectively as cutting depth amounts of correction x ₁ ~x _6,
This is a graph in which y ₂ ,..., y ₅ , y ₆ are associated with each other. _{Here, 0~x 1, x 1 ~x 2} , ......, x 5 ~x called ₆ six a section with steps 1 6 respectively, of their steps 1 6 the following six primary It is approximated by a function. y = a ₁ x + b ₁ y = a ₂ x + b ₂ y = a ₃ x + b ₃ y = a ₄ x + b ₄ y = a ₅ x + b ₅ y = a ₆ x + b ₆ And the cutting depth y is the determined correction amount x Is calculated using any one of the above six functions based on

The graph in the memory 41 is arbitrarily input by an operation from an operation panel 50 shown in detail in FIG. In FIG. 4, an operation panel 50 is operated in advance when inputting a graph in which the correction amount and the cutting depth are associated with each other, and is operated when monitoring the input graph with the setting switch 51 having an illumination lamp. A monitor switch 52 with an illumination lamp, a correction amount switch 53 with an illumination lamp operated together with the monitor switch 52 when monitoring the correction amount, and an illumination operated with the monitor switch 52 when monitoring the cutting depth. And a cutting depth switch 54 with a light. Further, an input display 55 for inputting and displaying a step number indicating a section of the graph of FIG. 3, an input display 56 for inputting and displaying a value of a correction amount or a cutting depth, and a correction pattern of a correction pattern shown in FIG. An input display 57 for inputting and displaying a correction pattern number for setting a plurality of graphs. Each input display 55-
57 is a switch 55a to increment data.
57a and a switch 55b for decrementing the data.
57b and seven-segment display sections 55c to 57c.

FIG. 5 shows an example of a procedure for inputting the correction pattern shown in FIG. 3 using each switch of the operation panel 50. First, in step S1, the setting switch 51
The operation of the setting switch 51 is determined when the operation is performed.
Blinks (step S2). It is determined whether a correction pattern number has been input from the input display 57 (step S3), and if so, the number is displayed on the input display 57 (step S4). At this time, 1 is input to the internal variable i indicating the step number (step S5), and the step number 1 is displayed on the input display 55 (step S6). Next, it is determined whether or not the operation of the correction amount switch 53 has been determined (step S7). When it is determined that the operation has been performed, the correction amount switch 53 is turned on (step S7).
8). In this state, switch 5 of data input display 56
Receiving the signal from 6a or 56b, the correction amount data of step number i is input (step S9). Next, it is determined whether the setting switch 51 is turned on for about one second (step S10).
Is turned on (step S11). The above is the step number
This is the correction amount input procedure for i.

When the input of the correction amount of the step number i is completed,
When the operation of the cutting depth switch 54 is determined in step S12, the setting switch 51 blinks again, and the cutting depth switch 54 lights up (step S13). In this state,
Upon receiving a signal from the switch 56a or 56b of the data input display 56, the cutting depth data of the step number i is input (step S14). Next, it is determined whether the setting switch 51 is turned on for about one second (step S1).
5) If affirmative, the setting switch 51 is turned on (step S16), and the internal variable i is incremented in step S17. Further, in step S18, it is determined whether the variable i is 6 or less.
The same operation is repeated till the above, and when it is determined that the number is 7 or more, the process proceeds to step S19, and all the displays are turned off assuming that all the settings are completed.

FIG. 6 shows a procedure for monitoring the already input correction amount and cutting depth. It is determined in step S21 whether the monitor switch 52 has been operated, and if it has been operated, it is determined in step S22 whether the correction amount switch 53 or the cutting depth switch 54 has been operated. Step S23
Then, one of the operated switches 53 and 54 is turned on, and the process proceeds to step S24. In step S24, the correction amount or the cutting depth according to the input correction amount pattern number and the step number is displayed on the input display 56.

FIG. 7 shows a work W to be measured in this embodiment.
And three arms W radially about the rotation center Ax.
a, Wb, and Wc are provided, and the end of each arm can be cut by the end mill cutter 21. 7, the movement locus of the end mill cutter 21 is indicated by an arrow. Here, in the present embodiment, for example, when there is an unbalance amount in the direction between the arms Wa and Wb, the unbalance amount is divided into the axis of the arm Wa and the axis of the arm Wb, and the tip of each arm is divided. To make an unbalance correction. In the following, an axis number for identifying each arm is assigned to each arm to which the divided correction amount is assigned. In the present embodiment,
The cutting depth that can be cut at one time with the end mill cutter 21 is 1
mm and the total cutting depth is 3 mm. Therefore, when a cutting depth of 3 mm is required to cancel the unbalance amount, the end mill cutter 21 is fed three times by 1 mm. Therefore, the order of the first to third correction operations is referred to as a correction order.

FIGS. 8 to 10 are flowcharts showing an example of the procedure of the operation for correcting the unbalance amount. In step S31 of FIG. 8, the unbalance amount and the unbalance position, which are the measurement results, are fetched from the dynamic balance measurement device 33, and step S31 is performed.
At 32, the modified order is fetched from the sequencer CPU 43. In step S33, the correction order is determined. If it is 1, the flow proceeds to step S34, and if it is 2, the flow proceeds to step S35. In step S34, memories E and G and memories F ₀ , F ₁ and F
₂ , F ₃ , H ₀ , H ₁ , H ₂ , and H ₃ are initialized. Also, the memories K and L are initialized. The memories E and G store axis numbers for identifying the two axes into which the unbalance correction amount is divided, and the memories F ₀ , F ₁ , F ₂ , F ₃ , H ₀ , H ₁ , H ₂ ,
H ₃ stores the cutting depth of each axis. Hereinafter, F _{0 to} F
_3, H _{0 ~H 3} conveniently referred to as a cutting depth. The memory K stores the sum of the correction amounts for the first axis, and the memory L stores the sum of the correction amounts for the second axis.

Here, F _{0 to} F ₃ and H _{0 to} H ₃ are cutting depths calculated for each correction order, F ₀ is the first cutting depth for the first axis, F ₁ Is the second on the first axis
Times th cutting depth, F ₂ is the third depth of cut for the first axis, F ₃ is the first time to third time until the total depth of cut of the first shaft, i.e. the amount of cutting in each modification orders Is the sum of H ₀ is the first cut depth for the second axis, H ₁ is the second cut depth for the second axis, H ₂ is the third cut depth for the second axis, H ₃ Is the total cutting depth of the second axis from the first time to the third time.

In step S35, the number of the divided first axis and the correction amount of the first axis are extracted based on the data sent from the dynamic balance measuring device 33, and the first
Stores the axis number. Then, the previously stored correction amount K
_The correction amount K _NEW detected this time is added to _OLD and stored as the correction amount K. In step S36, the table of the graph shown in FIG. 3 is looked up based on the correction amount K of the first axis stored in this manner, and the cutting depth with respect to the workpiece, that is, the origin position of the end mill cutter 21 (primary position) The feed amount from the position where cutting is started by the end mill cutter 21 in the correction) is read out and stored in the memory Z. Next, in step S37, if the correction order is 1, zero is substituted for the variable Y in step S147. here,
The variable Y indicates the total cutting depth used in the previous correction order. Fixed order proceed to the 2 If step S38, the determination whether the value stored in the memory E matches the number of the first axis at the time of primary modification, a total depth of cut F ₃ to the variable Y if it is affirmative substitute. In step S36, the total correction amount up to the previous time is stored as K _OLD , but the total correction amount may be obtained from the above-described total cutting depth F3 in the graph of FIG. 3 and used as K _OLD. .

If step S38 is denied, step S
Proceeds to 145, it is determined whether the value stored in the memory E matches the number of the second axis when the primary modification, substituted with H ₃ into variable Y at step S146 when it is affirmed. Step S3
9. In a step S40 following the step S146, it is determined whether or not the variable Y is zero. If it is not zero, it is determined whether or not the variable Y + Z is 3 or less in a step S41. If it is 3 or less, the process proceeds to a step S42 (FIG. 9). If it exceeds 3, the process proceeds to step S52.

In step S42, it is determined whether or not the cutting depth Z is 1 or less.
First cutting depth F of end mill cutter 21 with respect to shaft
Z + Y is substituted for _0, and _zero is substituted for the second cutting depth F ₁ and the third cutting depth F ₂ , respectively. Moreover, to store the Z + Y in the total cutting depth F _3. Z is 1 in step S42
If it is determined that it exceeds 2, it is determined whether it is 2 or less in step S47, and if it is 2 or less, the process proceeds to step S48 and the first
First cutting depth F of end mill cutter 21 with respect to shaft
₀ substitutes 1 + Y, substitutes Z + Y in the second milling depth F _1, if the values are zero to the third milling depth F _2. Moreover, to store the Z + Y in the memory F _3.

If it is determined in step S47 that Z exceeds 2, it is determined in step S49 whether it is 3 or less, and if it is 3 or less, the flow proceeds to step S50, and the first cutting of the end mill cutter 21 with respect to the first axis. 1 + Y is substituted for the depth F ₀ , 2 + Y is substituted for the second cutting depth F ₁ , and Z + Y is substituted for the third cutting depth F ₂ . Moreover, to store the Z + Y in the total cutting depth F _3. Z in step S49
Is determined to exceed 3 in step S51.
1 + Y is substituted for the first cutting depth F ₀ of the end mill cutter 21 with respect to the first axis, and 2 + Y is substituted for the second cutting depth F _1.
And 3 is substituted for the third cutting depth F ₂ . Furthermore, 3 stores the total milling depth F _3. Subsequent to these steps S43, S48, S50, S51, the process proceeds to step S44, and zero is substituted for Z (cleared).

If it is determined in step S41 that Y + Z exceeds 3, it is determined in step S52 whether Z is 1 or less. If Z is 1 or less, the end mill cutter 21 for the first axis is determined in step S53. Is substituted for 3 in the first cutting depth F ₀ , and _zero is substituted for the second cutting depth F ₁ and the third cutting depth F ₂ . If it is determined in step S52 that it exceeds 1, it is determined in step S54 whether Z is 2 or less. If Z is 2 or less, the end mill cutter 2 for the first axis is determined in step S55.
Y + 1 is substituted for the first cutting depth F ₀ of ₁ , 3 is substituted for the second cutting depth F ₁ , and zero is substituted for the third cutting depth F ₂ . When Z is determined to be beyond 2 in step S54, in step S56, the first depth of cut F ₀ of the end mill cutter 21 with respect to the first axis Y +
1 by substituting, into the second milling depth F ₁ by substituting Y + 2,
Third cutting depth F ₂ to 3 is substituted, respectively. Then, after clearing Z in step S44, step S4
Go to 5.

In step S45, the number of the divided second axis and the amount of correction of the second axis are extracted based on the data sent from the dynamic balance measuring device 33, and the second
Stores the axis number. Then, the previously stored correction amount L
_The correction amount L _NEW detected this time is added to _OLD (may be obtained from H ₃ similarly to the correction amount K _OLD ) and stored as the correction amount L. In step S46, the table of the graph shown in FIG. 3 is looked up based on the correction amount L of the second axis stored as described above, and the cutting depth with respect to the workpiece, that is, the feed of the end mill cutter 21 from the origin position is determined. The amount is read and stored in the memory Z. Next, step S57
If the correction order is 1, zero is substituted for the variable Y in step S64. Fixed order proceed to the 2 If step S58, the determination whether the value stored in the memory G matches the number of the second axis at 1 Amendment, the total depth of cut F ₃ to the variable Y if it is affirmative substitute.

If step S58 is denied, step S
Proceeds to 62 and determines whether the value stored in the memory G matches the number of the second axis when the primary modification, substituted with H ₃ into variable Y at step S63 if it is affirmative. In step S60 following step S59 and step S63, the variable Y
Is determined to be zero. If it is not zero, it is determined in step S61 whether the variable Y + Z is 3 or less. If it is 3 or less, the process proceeds to step S65, and if it exceeds 3, the process proceeds to step S77.

In step S65, it is determined whether the cutting depth Z is 1 or less. If so, in step S68, the second
First cutting depth H of end mill cutter 21 with respect to shaft
Z + Y is substituted for _0, and _zero is substituted for the second cutting depth H ₁ and the third cutting depth H ₂ , respectively. Moreover, to store the Z + Y in the total cutting depth H _3. Z is 1 in step S65
If it is determined that it exceeds 2, it is determined in step S66 whether it is 2 or less, and if it is 2 or less, the process proceeds to step S69 and the second
First cutting depth H of end mill cutter 21 with respect to shaft
₀ substitutes 1 + Y, substitutes Z + Y in the second milling depth H _1, if the values are zero to the third milling depth H _2. Moreover, to store the Z + Y in the memory H ₃ of the total depth of cut.

If it is determined in step S66 that Z exceeds 2, it is determined in step S67 whether it is 3 or less. If it is 3 or less, the flow proceeds to step S70, and the first cutting of the end mill cutter 21 with respect to the second axis. substituting 1 + Y depth H _0, to a second depth of cut H ₁ substituting 2 + Y, if the values are the Z + Y in the third cutting depth H _2. Moreover, to store the Z + Y in the total cutting depth H _3. In step S67, Z
Is determined to have exceeded 3, in step S71,
Substituting 1 + Y in the first depth of cut H ₀ of the end mill cutter 21 with respect to the second axis, the second cutting depth H ₁ to 2 + Y
Substituting, if the values are the third cutting depth H ₂ to 3. Furthermore, 3 stores the total milling depth H _3.

If it is determined in step S61 that Y + Z exceeds 3, it is determined in step S77 whether Z is 1 or less. If Z is 1 or less, the end mill cutter 21 for the second axis is determined in step S78. Is substituted for 3 in the first cutting depth H ₀ , and _zero is substituted for the second cutting depth H ₁ and the third cutting depth H ₂ . If it is determined in step S77 that it exceeds 1, it is determined in step S79 whether Z is 2 or less. If Z is 2 or less, the end mill cutter 2 for the second axis is determined in step S80.
Substitutes Y + 1 to the first depth of cut H ₀ of 1, a second depth of cut H ₁ to 3, the values are zero for the third time of the cutting depth H _2. When Z is determined to be beyond 2 in step S79, in step S81, the first depth of cut H ₀ of the end mill cutter 21 with respect to the second axis Y +
1 by substituting, into the second milling depth H ₁ by substituting Y + 2,
Third cutting depth H ₂ to 3 is substituted, respectively. Thereafter, the process proceeds to step S72.

In step S72, the cutting depths F ₀ , F ₁ ,
The stored values of F ₂ , F ₃ and the cutting depths H ₀ , H ₁ , H ₂ , H ₃ are represented by the number of pulses (feed drive motor 2 of end mill cutter 21).
7 is used as the number of pulses to be sent to the memory E, G in step S73.
(Evolved decimal number) and write it to the common buffer. In yet step S74, the the cutting depth F ₀ to F _3, written in the common buffer the number of pulses cutting depth H ₀ to H ₃ is converted to BCD (2 coded decimal). Then, step S7
The calculation is completed in step 5, and the calculation result is output. Step S82
Use to clear Z. In step S76, it is determined whether or not all the operations have been completed.
Then, the same processing is continued, and if all the operations are completed, the processing is completed.

In the procedure described above, the cutting depths F ₀ to F related to the correction of the first axis are based on the unbalance amount and the unbalance position sent from the work unbalance measuring device 33 at the time of the primary correction. ₃ and calculates a cutting depth H ₀ to H ₃ Revision of the second axis. Then, after the first axis of the work is indexed at a position facing the cutter 21, a pulse train representing the cutting depth F ₀ is sent to the cutter feed motor 27, and the feed amount of the cutter 21 is controlled. The first cutting process is performed on the first axis of the work by driving along the movement locus shown. If the cutting depths F ₁ and F ₂ are also calculated, the correction work is performed in the same manner. Next, the second axis of the work is determined, and similarly, if necessary, the correction work is performed by the cutter divided into the first to third times. The total cutting depths F ₃ and H ₃ at the time of the primary correction are stored.

After the primary correction, an unbalance test of the work is performed again to measure the unbalance amount and the unbalance position. If the unbalance amount is equal to or less than the reference value, the correction work is completed. When the unbalance amount is equal to or more than the reference value, the cutting depths F _{0 to} F ₃ and the _third depths related to the correction of the first axis are determined based on the unbalance amount and the unbalance position sent from the unbalance measurement device 33. depth of cut of Revised biaxial H ₀ to H ₃ calculates a. In calculating these correction amounts, the correction amount K _OLD for the first axis and the correction amount L _OLD for the second axis at the time of the primary correction are calculated for each axis for the correction amount K _OLD detected this time.
_OLD and L _OLD are respectively added. Therefore, the cutting depth obtained from the non-linear correction pattern shown in FIG. 3 at the time of the secondary correction is obtained as the total cutting depth including the primary correction. Therefore, if the cutter cutting depth at the time of the secondary correction is controlled based on the cutter origin position at the time of the primary correction, nonlinear correction becomes possible.

Specifically, the first axis of the work is
Then, a pulse train having a cutting depth F ₀ is sent to the cutter feed motor 27 to control the feed amount of the cutter 21, and then driven along the movement locus indicated by the arrow in FIG. The first cutting is performed on the first axis. If the cutting depths F ₁ and F ₂ are also calculated, the correction work is performed in the same manner. Next, the second axis of the work is determined, and similarly, if necessary, the correction work is performed by the cutter divided into the first to third times. After the secondary correction, the unbalance test of the work is performed again to measure the unbalance amount and the unbalance position. If the unbalance amount is equal to or less than the reference value, the correction work is completed.

As described above, according to this embodiment, when the correction order is second or higher, the correction amount up to the previous time is stored, and the cutter 21 has a value obtained by adding the previous correction amount to the current correction amount. And the feed amount of the cutter at the time of the secondary correction is controlled based on the origin of the cutter position at the time of the primary correction, so that the cutting depth and the unbalance correction amount as shown in FIG. Even if it is associated with
Accurate correction is possible even in the following correction work,
Work efficiency is improved and the frequency of defective products is reduced.

FIG. 11 is applied to a case where the work has a relatively simple disk shape, for example. Step S10
In step 1, dynamic balance measurement is performed, and it is determined in step S102 whether the unbalance amount is within an allowable value. If the value is within the allowable value, the operation ends. If it is not an allowable value, step S10
The process proceeds to step S3, where the correction order is determined.
Proceed to 104. In step S104, the cutting depth is looked up with an unbalance amount using the correction pattern as shown in FIG. In step S105, the correction amount is stored, and in step S106, it is determined whether the cutting depth is equal to or less than a predetermined maximum value. If it is not less than the maximum value, the process proceeds to step S107, and the cutting depth is
Send to U43. If the cutting depth is not less than the maximum value, the cutting depth is limited to the maximum value, and the process proceeds to step S107.
In step S108, the cutter is driven based on the cutting depth to perform correction.

If it is determined in step S103 that the correction order is second or higher, in step S110, the current correction amount is added to the previous correction amount to obtain a new correction amount. Then, in step S104, the table of FIG. 3 is looked up from this correction amount to newly obtain a cutting depth, and this cutting depth is sent to the sequencer CPU. Therefore, even in the dynamic balance test apparatus having a non-linear correction pattern as shown in FIG.
The cutting depth at that time is calculated as a value from the origin at the time of primary correction, and the same operation and effect as in the first embodiment can be obtained.

It should be noted that the shape of the work, the processing tool, the processing device, and the like are not limited to the embodiment, and various forms can be used. In the configuration of the above embodiment,
The motor 11 controls the rotating means 101, the dynamic balance measuring device 33 to which signals from the pickup 31 and the proximity switch 32 are input, the imbalance amount detecting means 102, the end mill cutter 21 controls the tool 103, and the processing device 20 controls the processing means. 104
The memory 41 constitutes the storage means 105, and the arithmetic unit 42 constitutes the arithmetic means 106.

[0036]

As described above in detail, according to the present invention, a graph in which the cutting depth and the unbalance correction amount are associated in a non-linear relationship is stored, and the detected unbalance amount is corrected. Since the cutting depth is calculated from the quantity by using the above-mentioned non-linear graph, the unbalance correction is efficiently and accurately performed on a workpiece having a shape in which the cutting depth and the unbalance correction amount are nonlinear. According to the invention of claim 2, when a plurality of correction operations are performed, the previous correction amount is stored, and the current correction amount is added to the correction amount to obtain the cutting depth. Even when the cutting depth and the unbalance correction amount are associated in a non-linear relationship, accurate unbalance correction can be performed by a plurality of correction operations.

[Brief description of the drawings]

[Fig. 1] Claim correspondence diagram

FIG. 2 is a diagram showing the overall configuration of an unbalance tester according to the present invention.

FIG. 3 is a graph showing a relationship between a correction amount and a cutting depth.

FIG. 4 is a front view of the operation panel.

FIG. 5 is a diagram showing a procedure for inputting a correction pattern.

FIG. 6 is a diagram showing a procedure for monitoring input data.

FIG. 7 is a diagram showing a workpiece shape and a cutter according to the present embodiment.

FIG. 8 is a flowchart illustrating an example of a procedure of a correction operation;

FIG. 9 is a flowchart following FIG. 8;

FIG. 10 is a flowchart following FIG. 9;

FIG. 11 is a flowchart showing a second example of the procedure of the correction work;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 21 End mill cutter 22 Cutter rotation drive motor 27 Cutter feed motor 31 Unbalance detection pickup 32 Proximity switch 33 Dynamic balance measuring device 40 Sequence control device 41 Memory 42 Arithmetic device 50 Operation panel 101 Rotating means 102 Unbalance detecting means 103 Tool 104 Processing Means 105 Storage means 106 Calculation means W Work

──────────────────────────────────────────────────続 き Continuation of the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) G01M 1/30-1/38 B23Q 15/00-15/28 JICST file (JOIS)

Claims (2)

(57) [Claims] 1. A rotating means for rotating a work, an unbalanced amount detecting means for detecting an unbalanced amount of the rotating work, and a tool for correcting the unbalanced amount by adjusting a tool in accordance with a predetermined feed amount command value. Processing means for cutting off a part of the work by approaching the tool; storage means for storing a graph in which the cutting depth of the tool and the unbalance correction amount are associated in a non-linear relationship; and the detected unbalance. Calculating means for calculating the cutting depth of the tool using the graph from the unbalance correction amount corresponding to the amount, and sending a feed amount command value signal corresponding to the calculated cutting depth to the processing means. A dynamic equilibrium test device characterized in that: 2. The apparatus according to claim 1, wherein the step of correcting the unbalance amount is repeated a plurality of times, the first unbalance correction amount is stored, and the second cutting depth by the calculating means is stored. Is obtained from the graph using a value obtained by adding the first unbalance correction amount and the second unbalance correction amount.