JPH0448518Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an unbalance correction device for correcting the unbalance of a test specimen measured by a dynamic balance test.

[Prior Art] The amount of unbalance of a test specimen measured by a dynamic balance test is corrected using a drilling machine or the like. A normal dynamic balance tester that is not configured as a fully automatic system simply displays the measured unbalance amount, and the operator uses many years of experience to
The operator calculates the feed length of a drilling machine, that is, the depth of cut, from the displayed amount of unbalance and performs correction work. In addition, even if the feed length is displayed by a measuring device, the operator memorizes the scale of the cutting start point and subtracts the feed length from there to calculate the feed stop point while making corrections. is being carried out.

[Problems to be solved by the invention] However, the above-mentioned conventional correction method relies exclusively on the skilled operation of the operator, who stares at a fixed scale dial installed on a drilling machine, etc., and calculates the feed length (cutting depth). It was a laborious and complicated task that involved calculating the quantity.

This invention was devised to eliminate such labor for workers, and does not require the construction of complex and expensive equipment such as a fully automatic correction system.
In a correction device using a normal drilling machine etc.
It is an object of the present invention to provide an unbalance amount correction device that allows necessary corrections to be easily made without imposing the above-described complicated work on an operator.

[Means for Solving the Problems] In order to solve the above problems, the present invention employs the following configuration.

That is, a cutting means such as a drilling machine for correcting unbalance, a scale plate that moves along the cutting direction of the cutting means, a motor that moves the scale plate back and forth, a control means that drives the motor, and the scale plate. and a pointer indicating the depth of cut of the cutting means on the board, and the control means is a calculation means for converting the amount of unbalance of the test piece measured by a dynamic balance tester or the like into the depth of cut of the cutting means. and motor drive control means for applying a drive control signal to the motor to move the scale plate by a predetermined amount based on the calculation result by the calculation means.

[Operation] First, after setting the part of the specimen to be corrected on the cutting means, align the reference line of the scale plate with the pointer, and then drive the motor based on the calculation result of the calculation means, and move the scale plate to the cutting means. Move by an amount corresponding to the required displacement amount (depth of cut). After making preparations in this way, start cutting with the cutting means, and correct the necessary amount of unbalance by continuing the work until the pointer, which moves according to the feed of the cutting means, matches the reference line of the scale plate. I can do it.

[Embodiment] FIG. 1 is a diagram schematically showing the configuration of an embodiment of the present invention, in which an unbalance amount correcting device 1 is configured with a drilling machine 2 as a cutting means. The amount of unbalance is measured by a dynamic balance test, and the test specimen 7 placed on the base 20 is attached to the drill 6 attached to the tip of the rotating shaft 4, which moves back and forth by rotating the handle 3 of the drilling machine 2. It is twisted and cut. A pointer 8 is connected to the drilling machine 2 via a support member 5, and moves by the same amount in conjunction with the movement of the rotating shaft 4 that moves back and forth.

Further, the unbalance amount correction device 1 includes a support frame 11 fixed to a support column 10 erected on a base 20, and the support frame includes a motor 19, a rotation shaft 14 rotated by the motor 19, A scale plate 15 is provided which moves in parallel along the rotation axis 4 of the drilling machine 2 by the rotation of the motor 19. The scale drawn on the scale board 15 is indicated by a pointer 8 provided on the drilling machine 2 side.

FIG. 2 is a block diagram showing the electrical configuration of the drive system of the motor 19 that moves the scale plate 15 of the display device. A signal W indicating the amount of unbalance of the test body 7 measured by a dynamic balance tester (not shown) is input to the calculator 16. The calculator 16 calculates and converts the unbalance amount of the test piece 7 into the feed displacement amount (cutting depth) of the drilling machine 2, which is the cutting means, and outputs a signal L indicating the cutting length by the drilling machine. The signal L is input to a motor drive control circuit 17 which outputs a drive signal necessary for the motor 19 to move the scale plate 15 by a distance equal to the required cutting length of the drilling machine 2. For example, if the motor 19 is a stepping motor, the signal X required to move the scale plate 15 by L (mm) is
Output as = L×N pulse train. Here L
is the moving distance of the scale plate, and N is the number of pulses required for the stepping motor to move the scale plate 15 by a unit length. In a two-phase stepping motor,
If the motor shaft moves M (mm) per rotation of a motor with a speed of 1.8 degrees/pulse, then N can be calculated as N=(360/1.8)×(1/m).
The output signal of this x number of pulse trains is
is amplified and supplied to the motor 19, and the scale plate is set to L.
(mm) to move.

To correct the unbalance of the test specimen 7 using the unbalance correction device configured as described above, first align the pointer 8 with the reference line of the scale plate 15, as shown in FIG. 3a. . Fine adjustment at this time can be achieved by making a cut for engagement with a screwdriver at the tip of the feed shaft 14 to which the scale plate 15 is attached, and rotating it with a screwdriver or the like to move the scale plate 15 back and forth. Next, the motor 19 is driven to move the scale plate 15 by a distance corresponding to the required cutting length on the drilling machine 2 (FIG. 2(b)). After making preparations for correction in this way, the handle 3 of the drilling machine 2 is rotated to start cutting work. Since the pointer 8 moves in conjunction with the feed of the drilling machine, the cutting operation is completed when the pointer 8 indicates the reference line of the scale plate 15 (FIG. 3(c)).

In this way, according to the present invention, the scale plate 1 is moved by a distance equal to the cutting feed length required for correction on the drilling machine.
To make the necessary corrections, simply move the pointer 5 and feed the drill press until the pointer 8, which coincided with the reference line of the scale plate 15 at the cutting start point, again coincides with the reference line of the scale plate 15. I can do it. Therefore, since the feed rate of the drill press can be displayed in the form of a bar graph, it is no longer necessary for the operator to perform the conventional unbalance correction work by calculating the feed rate of the drill press himself. .

In the above embodiment, the pointer 8 is linked to the movement of the rotating shaft of the drilling machine 2 in a 1:1 ratio, but when the amount of movement of the drilling machine is small due to fine adjustments etc. You may also use the effect of
In this way, the amount of movement of the drilling machine can be expanded and read on the scale plate 15 by the arm ratio L2/L1. In this case, scale plate 1
The moving direction of 5 is opposite to the feeding direction of the drilling machine. Further, the amount of movement of the pointer may be increased by combining a string and a pulley.

Furthermore, by moving the scale plate, the index body may appear in the form of a bar graph according to the amount of movement.
The key is to make the pointer easily visible. Furthermore, by configuring a mechanical stopper for the drilling machine to operate at a position corresponding to the reference line of the scale plate moved by the motor 19, excessive cutting can be avoided and correction work can be performed more accurately and easily. can.

[Effects of the invention] As is clear from the above explanation, the unbalance amount correcting device according to the invention allows the use of ordinary cutting means such as a drilling machine without configuring a complicated and expensive fully automatic feeding system. It became possible to easily and accurately correct the unbalanced amount.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing the configuration of an embodiment of the present invention,
Figure 2 is a block diagram showing the electrical configuration of the drive system that moves the scale plate, Figures 3a, b, and c are diagrams explaining the correction procedure in the embodiment, and Figure 4 is a diagram explaining a modified embodiment. It is. 2... Drilling machine, 4... Rotating shaft, 7... Test object, 8... Pointer, 14... Feed shaft, 15... Scale board, 16... Arithmetic unit, 17... Motor drive control circuit, 18... ...Driver, 19...Motor.

Claims (1)

[Scope of utility model registration request] A cutting means such as a drilling machine for correcting unbalance;
a scale plate that moves along the cutting direction of the blade of the cutting means; a motor that moves the scale plate back and forth;
The control means is equipped with a control means for driving the motor, and a pointer indicating the depth of cut of the cutting means on the dial, and the control means is configured to measure the amount of unbalance of the test piece measured by a dynamic balance tester or the like. The method further includes a calculation means for converting the cutting depth into the depth of cut of the cutting means, and a motor drive control means for applying a drive control signal to the motor to move the scale plate by a predetermined amount based on the calculation result by the calculation means. Features an unbalance amount correction device.