JPH0650753Y2 - Balancing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial field of application The present invention is a fishing for correcting an unbalance of a flat DUT having an uncorrectable and an angular region (hereinafter referred to as an impossible region) that cannot be corrected. Regarding the repair machine.

Conventional technology When correcting the unbalance of the rotating body that is the DUT,
The position supported by the correction angle signal will be corrected by the amount indicated by the correction amount signal.However, some DUTs have terminals or terminals on the surface, such as head parts used for VCRs. A rotating body to which other components are attached is also included, and such a rotating body often causes inconvenience when correction is performed. In other words, the position specified by the correction angle signal may be the mounting position, although the position where the surface component is mounted cannot be corrected.

Conventionally, in such a case, the required correction amount is distributed to two positions where the parts and the like are attached and which can be corrected to correct the imbalance.

Problems to be solved by the invention The correction work by the above allocation was carried out while the worker was deciding based on the experience and intuition from the value indicated by the unbalance angle meter or the value indicated by the unbalance amount meter. Depending on the work efficiency, if the skill level is low, the correction may be incomplete.

The present invention was created to solve the above problems,
It is an object of the present invention to provide a balance correction machine that can perform accurate correction without using experience or intuition even when the correction angle is in an uncorrectable area.

Means for Solving the Problems In order to achieve the above-mentioned object, the present invention provides an unbalance correction of a flat DUT having an uncorrectable angle region in which the correction cannot be carried out. In the balance correction machine to be performed, the uncorrectable area setting means for inputting the uncorrectable angle area and the correction angle of the correction vector indicating the correction angle and the correction amount are within the uncorrectable angle area set by the uncorrectable area setting means. Comparing means for determining whether or not the output is an area determination output; and, when the area determination output indicates the inside of the area, a predetermined outside neighborhood of both boundaries of the uncorrectable angle area and the outer correctable area A computing means for computing and outputting two auxiliary correction vectors, which are distributed to each other and whose composition is the correction vector, and the auxiliary correction vector calculated by this computing means. And a display unit for displaying.

Action The disabled area is input by the disabled area setting means according to the state of the surface of the DUT. If the correction vector output from the equilibrium tester is in the impossible area, the comparison means informs that fact by the area determination output. Upon receiving this notification, the calculation means calculates and outputs an auxiliary correction vector indicating the correction angle and the correction amount of the correctable areas near both sides of the impossible area. At this time, the auxiliary correction vector is two vectors, one on each side of the impossible area, and the vector obtained by combining the two is calculated to be equal to the correction vector. The display section displays the auxiliary correction vector.

Embodiment An embodiment of the present invention will be described below.

FIG. 2 is a plan view showing the outline of a head component used for a VCR. The terminals 62 are attached to the upper surface of the head body 61 at three positions near the outer periphery 64 at substantially equal intervals. The correction of the imbalance of the head component 65 is performed by using a concentric circle slightly smaller than the diameter of the outer circumference 64 from the relationship between the depth of the correction hole and the unbalance amount to be corrected, or the thickness of the upper portion of the head body 61. This is done by making a correction hole at one point on the circumference 63. However, on the circumference 63, the terminal 62
Therefore, there is an area where correction holes cannot be made, that is, an impossible area.

FIG. 3 is an explanatory diagram showing details of one of the three disabled areas. The disabled area 81, which is slightly wider than the width of the terminal 62, is set by the two radii 82 and 83 with the terminal 62 of FIG.
The angles of the radii 82 and 83 from the reference are defined as θ1 and θ2. If the correction vector 71 is in the impossible area 81, it is equivalent to the correction vector 71 by making two correction holes, one at each of the two intersections 91 and 92 of the circumference 63 and the radius 82 and the radius 83. Make corrections. That is, as shown in Fig. 4, two auxiliary correction vectors in the directions of radii 82 and 83
Correction holes corresponding to 82a and 83a are made at intersections 91 and 92 shown in FIG. Assuming that the angle between the radius 83 and the radius 82 is α and the angles at which the correction vector 71 and the radii 82 and 83 intersect are β and γ, respectively, 1 = OA × sinβ 1 = OB × sinα from FIG. To get In the same way Becomes

Here, the length OA of the correction vector 71 and the angle θ from the reference are given as outputs from the balance tester, and θ1, θ
2 is known As, the auxiliary correction vectors 82a and 83a can be obtained.

FIG. 1 is a block diagram showing the construction of the balance correcting machine of the present invention. In the figure, a correction angle signal 31 indicating the angle θ of the correction vector 71 is a comparison means for determining whether or not the correction vector 71 is in an impossible area, and is guided to a comparison circuit 11 including three sets of window comparators. ing. The impossible area setting means is composed of, for example, a potentiometer,
It comprises a disabled area setting circuit 13a for inputting respective angles θ1 and θ2 of the radii 82 and 83 shown in FIG. 3 and two sets of disabled area setting circuits 13 for setting other disabled areas. , Their outputs are connected to the comparison circuit 11.
The area determination output 35, which is output from the comparison circuit 11 and indicates whether or not the correction vector 71 is in the impossible area, is connected to the display unit 23 that notifies the operator of that fact. In addition, the comparison circuit 11
From which a selection output 36 for notifying which of the three disabled areas is located is sent, and a selection circuit for selecting and outputting one of the set outputs from the three sets of disabled area connection circuits 13. Guided by 12. The calculation means 14 includes a selection circuit 12
The subtraction circuit 15 to which the output from and the correction angle signal 31 are input.
And the output of the subtraction circuit 15, for example A / D converted and given to the function generation ROM, the output is D / A converted sine function value generation circuit 16, and this output and the correction amount signal 32 It is composed of two sets of multiplication circuits 17 for multiplying. The output is led to another set of switch parts 19b of the vector changeover switch 19 in which one set 19a switches the output indicating the angle of the two auxiliary correction vectors from the selection circuit 12. The correction angle signal 31 and the correction amount signal 32 are input to the output of the vector changeover switch 19, and the area determination signal from the comparison circuit 11 is input.
A correction angle display 21 and a correction amount display 22 are displayed via a switching circuit 20 including an analog switch that operates in accordance with 35.
Is connected to the display unit 24.

The operation will be described below.

The impossible area determination circuit 13 inputs the range (for example, .theta.1 and .theta.2) of the impossible area in which the head component 65 which is the DUT cannot be corrected.

When the correction angle signal 31 from the balance testing machine (not shown) is in the correctable range, the output of the switching circuit 20 is contact b.
Appears, the correction angle signal 31 and the correction amount signal 32 indicating the normal correction vector 71 are sent to the display unit 24 and displayed, and the operator corrects the head part 65 according to the display.

If the correction vector 71 is in the impossible area 81, the comparison circuit
This is notified by the area determination output 35 from 11
The display unit 23 makes that display. The comparison circuit 11 informs the selection circuit 12 of which of the three disabled areas the correction vector 71 is located by the selection output 36.
Sends one of the three set outputs to the subtraction circuit 15 in accordance with the instruction. From the angle θ of the correction vector 71 indicated by the correction angle signal 31 and the angles θ1 and θ2 indicated by the setting output from the selection circuit 12, the arithmetic circuit 15 calculates 2
The three angles β and γ are calculated (see FIG. 3) and sent to the sine function value generation circuit 16. The two angles β and γ are sin β and s, respectively.
After being converted to a sine function value of inγ, it is guided to the post-multiplication circuit 17,
The multiplication circuit 17 calculates sinβ × OA sinγ × OA for the value OA of the correction amount signal 32. The angle α is set by the impossible area setting circuit 13 so as to always have a constant value, and sin α is a constant. Is done.
Since the switching circuit 20 outputs the input of the contact point a by the area determination output 35 from the comparison circuit 11, the signal from the selection circuit 12 indicating the angles of the auxiliary correction vectors 82a and 83a and the length thereof. The output of the multiplication circuit 17 indicating is indicated on the display unit 24. At this time, the operator connects the vector changeover switch 19 to the contact b side, and the auxiliary correction vector 83 shown in FIG.
A correction hole corresponding to a is made at the intersection 92 shown in FIG.
Make the corresponding corrections to.

The present invention is not limited to the above-described embodiment, and when there is only one disabled area, the selection circuit 12 can be omitted, and the disabled area setting circuit 13 can be used for the disabled area of the DUT 65. By providing the same number as the number, it is possible to apply even when performing the correction of the DUT having two or four or more disabled areas.

Further, the case where the correction vector 71 is given as an analog signal has been described, but also when the correction vector 71 is given by a digital signal such as BUD, a digital switch is used for the impossible area setting circuit 13 and the multiplication circuit 17 is digitally multiplied. It is needless to say that the present invention can be applied by adopting a configuration using a circuit or the like, and can also be software processing provided with a CPU.

Effect of the Invention In the balance correction machine of the present invention, when the correction angle is in the impossible area, one is distributed to both the outer sides of both boundaries of the non-correctable area and the outer modifiable area. Since two auxiliary correction vectors that are equal to are calculated by calculation and these auxiliary correction vectors are displayed, even if the correction angle is in the uncorrectable area, the correct correction can be made without using experience or intuition. It is possible to provide a balance correction machine that can perform various corrections.
Also, if the correction vector is in the uncorrectable angle region,
Since the correction vectors are distributed so that they have respective angles in the vicinity of both outer sides of the uncorrectable angle region and their combination is the correction vector, the angle range to be distributed on the plane can be suppressed to the minimum necessary. Since it is possible to effectively prevent the distributed auxiliary correction vector from overlapping with another uncorrectable angle area on the same plane, as a result, it is also effective for a planar object under test having many uncorrectable areas. It is possible to provide a balance correction machine capable of correcting imbalance.

[Brief description of drawings]

FIG. 1 is a block diagram showing the construction of a balance correcting machine of the present invention, FIG. 2 is a plan view showing the outline of a head component used in a VCR, and FIG. 3 is one of three disabled areas. FIG. 4 is an explanatory view showing the details of one, and FIG. 4 is an explanatory view showing the relationship between the correction vector and the auxiliary correction vector. 1 ... Comparison means, 13 ... impossible area setting means, 14 ... computing means, 24 ... display section

Claims (1)

[Scope of utility model registration request] 1. A balance correction machine for correcting an unbalance of a flat test object having an uncorrectable angle region where the correction cannot be performed, when inputting the uncorrectable angle region. An impossible area setting means, and a comparing means for judging whether the correction angle and the correction angle of the correction vector indicating the correction amount are within the uncorrectable angle area set by the impossible area setting means, and outputting an area judgment output. When the area determination output indicates the inside of the area, two areas are distributed in the vicinity of a predetermined outer side of both boundaries of the uncorrectable angle area and the outer correctable area, and the combination thereof is the correction vector. A balance correction comprising a calculation means for calculating and outputting an auxiliary correction vector, and a display section for displaying the auxiliary correction vector calculated by the calculation means. Machine.