JPH06347258A - Shaft alignment method of shaft joint for transmission of rotary driving force - Google Patents

Abstract

PURPOSE:To reduce the number of deviation measuring operations and the number of adjusting operations of a shaft to be adjusted, to eliminate an adjusting error and to shorten the time for a shaft alignment operation by a method wherein the deviation amount in a direction perpendicular to a reference shaft and the deviation amount in the direction of the reference shaft of the shaft are measured, and the deviation of the shaft is corrected on the basis of a relationship with a set amount. CONSTITUTION:A vertical direction of a face perpendicular to the reference axis X is designated as (z), and the horizontal direction is designated as (y). In the xz face or the xy face, projection lines to the xz face or the xy face of a shaft to be adjusted are designated as b1, b2, and intersection lines with the xz face or the xy face of a joint face are designated as a1, a2. When parts to be adjusted of the shaft are designated as l1, l2, correction amounts y1, y2 in the vertical direction and correction amounts z1, z2 in the horizontal direction at the l1, l2 become y1 and z1<<b1l1 as well as y2 and z2<<b1l2 as compared with distances b1l1, b1l2 from a coupling face up to an adjusting position, they are approximated by an angle b1l1x1= an angle b1l2x2, they become nearly 90 deg., and y1, y2, z1, z2 can be found as coordinates of (y) of (z) in l1, l2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shaft adjusting method for industrial and efficient shaft alignment of a shaft coupling (coupling) for transmitting a rotational driving force.

[0002]

2. Description of the Related Art Rotational driving force is generally transmitted from a shaft of a driving device to a driven shaft through a shaft coupling (coupling). At this time, if the shaft centers of the shafts facing each other in the shaft coupling are misaligned, an overload will be applied to the shaft coupling and the drive unit, causing a reduction in power efficiency and damage to the drive unit and / or shaft joint / bearing due to vibration. Becomes Therefore, when the device associated with the joint is replaced, or during periodic inspections, the axis alignment is adjusted.

In this adjustment, the coupling is usually temporarily fixed with a bolt or the like, and the shaft is rotated by 90 °, so that the coupling is displaced in the direction perpendicular to the axis and displaced in the axial direction (= deviation in the distance between the joint surfaces). 4 locations each (vertical up, down, horizontal left,
It is measured and measured in (right). With respect to the reference side axis, the adjustment side axis (usually the replaced equipment side axis) calculates the deviation angle in the vertical direction by approximate calculation, and first, in the vertical plane, parallel to the reference side axis. The axis is adjusted so that the above-mentioned measurement is performed again, the deviation of the axis of the axis in the vertical direction is obtained, and the axis is moved in parallel to correct the deviation of the axis.

Next, the shift in the horizontal direction is corrected. First, the above measurement is performed to calculate the misalignment angle of the axis in the horizontal plane by approximate calculation so that the axis is parallel to the axial direction of the reference axis,
The shaft is rotated by a small angle in the horizontal plane by the adjuster of the fixed leg of the device having the shaft to be adjusted. After that, the measurement is performed again, the amount of parallel deviation of the axis in the horizontal plane from the normal axis is obtained, and the fixed legs are adjusted at 2 to 8 points in the horizontal plane. From the series of measurements to adjustment, the measured values at each point of the coupling are all within a certain amount of deviation (eg ±
Repeat until it is within 0.05mm or within ± 0.10mm. Incidentally, the adjustment order of the deviation may be performed in the order of the horizontal deviation adjustment and the vertical deviation adjustment.
The adjusting shaft may be the shaft of the driving device or the shaft of the driven device.

[0005]

As described above, the axial alignment of the shaft coupling for transmitting the rotational driving force is frequently carried out on a daily basis such as partial replacement of the device and periodic inspection. On the other hand, once the axis is aligned, it is necessary to make multiple adjustments in 0.01 mm units, which is the same as multiple measurements in 0.01 mm units. There is also a drawback that the correction direction is erroneous due to the indefinite relationship, and the work load of measurement and axis adjustment increases.

For this reason, there is a demand for an industrially efficient axial alignment method for a shaft coupling for simultaneously determining the axial deviation correction direction and the correction amount in the vertical direction and the horizontal direction and transmitting the rotational driving force.

[0007]

SUMMARY OF THE INVENTION The present invention relates to a method of aligning a shaft coupling for transmitting a rotational driving force, wherein when one shaft is used as a reference shaft and the other shaft is adjusted, a reference shaft of the shaft to be adjusted is provided. Characterized by measuring the vertical deviation amount and the deviation amount in the reference axis direction, and correcting the axis deviation adjusted based on the relationship between the deviation amount and the correction direction and the correction amount set in advance. This is a method of aligning a shaft coupling for rotating drive force transmission.

[0008]

The device for generating the rotational driving force includes a motor, a speed increaser, a speed reducer, etc., and any device may be used as long as the shaft rotates to supply the driving force. It is preferable that the reference shaft is a shaft facing the shaft for replacing the device in the shaft coupling, or a shaft of a device (for example, a device on the weight body side) that is difficult to adjust in the periodic inspection.

The vertical shift amount of the reference axis is preferably a displacement in the adjustment direction of the axis of the device, but since the axis adjustment of the device is usually possible in the vertical direction and the horizontal direction, It is preferable to use the vertical shift amount and the horizontal shift amount in the vertical plane.

The deviation amount is measured by 0.05 mm or 0.01
A measuring instrument capable of measuring with a unit of mm or less can be used, and a dial gauge, a skimming gauge, a displacement difference meter or the like can be used. The main point of the present invention is to preset the relationship between the deviation amount, the correction direction, and the correction amount.

A mode example of this setting will be described below. Figure 1
The relationship between the deviation amount, the correction direction, and the correction amount is schematically shown in FIG. When the reference axis is x and the vertical direction is z or the horizontal direction is y in the plane perpendicular to the x axis, the projection line of the axis to be adjusted on the xz plane or the xy plane is b _{1 in} the xz plane or the xy plane.
b ₂ , the intersection of the joint surface with the xz plane or the xy plane is a ₁ a
₂ (a ₁ a ₂ is the diameter of the coupling).

Assuming that the adjustment points of the shaft are l ₁ and l ₂ , l ₁
correction amount y _1, y ₂ and horizontal correction amount z _1, z ₂ in the vertical direction at l _2, compared to the distance _{b 1 l 1, b 1 l} 2 from the coupling surface to the adjustment position y ₁ and z ₁ << b ₁
l ₁ , y ₂ and z ₂ << b ₁ l ₂ , so approximately, at angle b ₁ l ₁ x ₁ = angle b ₁ l ₂ x ₂ , these are approximately 90 °, and y ₁ , y ₂ and z ₁ and z ₂ can be obtained as y or z coordinates at l ₁ and l ₂ in FIG.

Therefore, the relationship between the shift amount, the correction direction, and the correction amount becomes apparent from FIG. If the adjuster is attached to the fixed base of the device, the above-mentioned correction amount y can be corrected.
_It suffices to correct ₁ , y ₂ or z ₁ , z ₂ in the predetermined direction by the adjuster.

[0014]

EXAMPLES Table 1 shows examples and comparative examples. In each of the examples, FIG. 3 and FIG. 3 (illustrated on the transparent plate) were superposed on the basis of the relationship of FIG. 1 to obtain the correction direction and the correction amount. On the other hand, in the comparative example, the shaft misalignment angle to be adjusted was calculated as described in the prior art, and the parallel misalignment amount of the shaft was subsequently measured to perform the shaft adjustment.

[0015]

[Table 1]

[0016]

[Table 2]

[0017]

As described above, according to the present invention, the number of times of measuring the shaft deviation and the number of times of adjusting the shaft can be reduced to about half of the conventional values in the axial alignment of the rotary drive force transmitting shaft coupling, and the adjustment can be performed. Since mistakes are less likely to occur, the axis alignment time can be shortened from 1/2 to 1/3 of the conventional time, and its industrial advantage is great.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing a relationship between a shaft coupling and a shaft shift.

FIG. 2 is a diagram showing an example of a relationship between a coupling diameter and a distance from a coupling surface to an adjustment position.

FIG. 3 is a diagram showing an example of a relationship between a distance between shaft coupling surfaces and a correction amount.

Claims (1)

[Claims] 1. A method of aligning a shaft coupling for transmitting a rotational driving force, wherein when one shaft is used as a reference shaft and the other shaft is adjusted, a deviation amount of a shaft to be adjusted in a direction perpendicular to the reference shaft is set. For transmitting a rotational driving force, characterized by measuring a deviation amount in a reference axis direction and correcting an axis deviation adjusted based on a relationship between the deviation amount and a correction direction and a correction amount set in advance. Shaft alignment method.