JPH11344331A - Measuring device of gear turbulence and its correction method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To quickly measure gear turbulence of a work by obtaining the correction value of turbulence of mother gear easily and in a short time. SOLUTION: A measuring means 15 is provided which obtains the gear turbulence of a work 3 based on the detection signal from a displacement sensor 14 measuring the distance between the rotational axes 4 and 5 of a parent gear 7 and the work 3 and position detectors 13 and 21 detecting the gear position of the parent gear 7 and the work 3. Added to the measuring means 15 is a correction value operating function to obtain a correction value for correcting turbulence of each gear tooth of the gear 7 by subtracting from each other an inter-axes distance for the number of teeth of the parent gear 7 detected by rotating the mother gear 7 and the work 3 from the gear positions of the parent gear 7 and the work 3 detected by the position detectors 13 and 21 and an inter-axes distance for the number of teeth of the mother gear 7 detected by rotating the parent gear 7 and the work 3 from the state which is the gear position at detection initiation of the inter-axes distance of the work 3 and the gear position where the parent gear is shifted for 180 degrees.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gear runout measuring apparatus for measuring the runout of a gear used for an engine or a transmission of an automobile, and a method of correcting the same.

[0002]

2. Description of the Related Art In general, items for judging the quality of gears used for an engine or a transmission of an automobile include an OBD, a dent value, a tooth runout, and the like. The determination of tooth run-out among these determination items is performed by a meshing test between gears, and a tooth run-out measuring device used for this determination is shown in FIG. 5 and FIG.

[0005] As shown in FIGS. 5 and 6, a pedestal 2 of the measuring apparatus 1 is provided with a rotating shaft 4, and the rotating shaft 4 has a measured object attached for measuring tooth runout. A work 3 which is a gear is attached. A moving table 6 having a rotating shaft 5 is provided on the pedestal 2, and a parent gear 7 serving as a reference for measuring tooth runout is attached to the rotating shaft 5 of the moving table 6.

[0004] A movable table 6 on which the parent gear 7 is mounted on the rotary shaft 5 can move in a direction in which the parent gear 7 approaches and separates from the workpiece 3 mounted on the rotary shaft 4. The master gear 7 is urged against the work 3 and meshed with the work 3 by a spring 8 provided therebetween. The spring 8 is provided on the pedestal 2 via a cylinder 9, and the urging force of the spring 8 on the moving table 6 is adjusted by the cylinder 9.

The movable base 6 is provided with a proximity switch 11 on the side of the parent gear 7 attached to the rotating shaft 5, and detects the teeth of the parent gear 7 and outputs a timing signal 11a as a signal thereof. It is supposed to. Further, a motor 12 is provided on the rotating shaft 5 provided on the movable base 6, and a rotating force is applied to the rotating shaft 5 by the motor 12, whereby the parent gear 7 is rotated. I have. The rotation shaft 5 is provided with a position detector 13, which detects the rotation angle of the rotation shaft 5 and outputs a position detection signal 13a.

A displacement sensor for detecting the amount of displacement of the movable base 6 with respect to the pedestal 2, that is, the distance between the rotating shaft 4 of the pedestal 2 and the rotating shaft 5 of the movable base 6, and outputting a displacement signal 14a. 14 are provided. The proximity switch 11, the position detector 13 and the displacement sensor 14 are connected to the measuring means 15, and the timing signal 11a, the position detection signal 13a and the displacement signal 14a from the proximity switch 11, the position detector 13 and the displacement sensor 14 are provided. Are input to the measuring means 15.

In the tooth runout measuring device 1, the timing signal 11a and the position detection signal 13a from the proximity switch 11, the position detector 13 and the displacement sensor 14 are provided.
The measuring means 15 calculates the runout of the workpiece 3 based on the displacement signal 14a and the displacement signal 14a.

When measuring the run-out of the work 3 by the run-out measuring device 1, the run-out value of the parent gear 7 is determined in advance so as not to be affected by the accuracy of the master gear 7, and the tooth run-out of the work 3 is determined. When calculating the run-out, it is necessary to correct this tooth run-out value. For this reason, in the above-described conventional apparatus, the sum of the tooth runout of the work 3 and the tooth runout of the parent gear 7 is obtained as a set of the number of teeth of the work 3 × the number of teeth of the parent gear 7, and the value for each tooth of the parent gear 7 is obtained from the value. The correction value was calculated.

[0009]

However, in this case, as described above, the distance between the rotating shaft 5 of the parent gear 7 and the rotating shaft 4 of the work 3 is determined by dividing the number of teeth of the parent gear 7 by the number of teeth of the work It had to be measured and calculated for several sets of 3 teeth. In other words, in the above-described conventional apparatus, a large number of measurements must be performed to determine the correction value of the tooth runout of the parent gear 7, and there has been a problem that a great deal of labor and time are required. Therefore, it takes time to obtain the correction value of the tooth runout of the parent gear 7 as a reference, and the measurement of the runout of the work 3 cannot be started quickly.

The present invention has been made in view of the above circumstances, and easily and quickly obtains a correction value of a parent gear.
It is an object of the present invention to provide a gear runout measuring device capable of quickly measuring a work runout and a correction method thereof.

[0011]

According to a first aspect of the present invention, there is provided a gear runout measuring apparatus, wherein a work to be measured is engaged with a reference parent gear and rotated. A gear runout measuring device that measures the runout of the work with respect to a parent gear, wherein the displacement sensor measures a distance between a rotation axis of the master gear and the work, and a rotational position of the master gear is detected. A work for detecting a rotational position of the work, comprising: a main gear position detector; and measuring means for determining a runout of the work based on the detection signals from the displacement sensor and the main gear position detector. A position detector is provided, and the measuring means rotates the work together with the master gear from the tooth positions of the master gear and the work detected by the master gear position detector and the work position detector. And a fraction between first shaft distance teeth of the parent gear detected by the displacement sensor whereby,
From the state where the workpiece is at the tooth position at the start of the first inter-axis distance detection and the parent gear is at the tooth position shifted by 180 ° with respect to the tooth position at the start of the first inter-axis distance detection, A correction value for correcting the tooth runout of each tooth of the parent gear by subtracting the second inter-axis distance corresponding to the number of teeth of the parent gear detected by the displacement sensor by rotating the workpiece together with the gear. Is provided with a correction value calculation function for calculating

As described above, since the correction value calculation function is provided in the measuring means, the measuring means can determine the reference correction value of the runout of the parent gear very quickly. At the time of measuring the run-out, the run-out data of the work can be corrected with a correction value obtained in advance to measure the run-out of the work with high accuracy. Accordingly, the correction value of the tooth runout of the parent gear can be calculated extremely easily in a very short time, and the work for measuring the runout of the workpiece can be started quickly.

According to a second aspect of the present invention, there is provided a method for correcting a runout of a gear, wherein a work as a measured gear is meshed with a reference parent gear and rotated to measure the runout of the work relative to the main gear. A correction method for a gear runout measuring device, wherein the work is rotated together with the master gear, thereby detecting a first inter-axis distance for the number of teeth of the master gear, and moving the work between the first shafts. By rotating the work together with the parent gear from a state where the tooth position at the start of the distance detection and the parent gear is a tooth position shifted by 180 ° from the tooth position at the start of the first inter-axis distance detection, A correction for detecting a second inter-axis distance corresponding to the number of teeth of the parent gear and subtracting the first inter-axis distance and the second inter-axis distance from each other to correct tooth runout for each tooth of the parent gear. It is characterized by obtaining a value.

This makes it possible to calculate the correction value of the tooth runout of the master gear in a very short time and easily, and to quickly start the work of measuring the runout of the workpiece.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A gear runout measuring apparatus and a correction method therefor according to an embodiment of the present invention will be described below with reference to the drawings. The same components as those of the conventional device are denoted by the same reference numerals, and the description is omitted. As shown in FIGS. 1 and 2, the tooth runout measuring device 10 includes a work 3 provided on a base 2.
A position detector (work position detector) 21 is provided on the rotary shaft 4 to which the is attached.

The position detector 21 detects the rotation angle of the rotating shaft 4 and outputs a position detection signal 21a. The position detection signal 21a output from the position detector 21
Are sent to the measuring means 15.

Also, in the case of the tooth runout measuring device 10, the work 3 which is the gear to be measured attached to the rotating shaft 4 and the reference parent gear 7 attached to the rotating shaft 5 are meshed with each other. By rotating the rotating shaft 5 by the motor 12, based on the timing signal 11a, the position detection signal 13a and the displacement signal 14a from the proximity switch 11, the position detector (parent gear position detector) 13 and the displacement sensor 14, The run-out of the workpiece 3 is determined by the measuring means 15. Further, the measuring means 15 of the tooth runout measuring device 10 of the present embodiment includes
Is provided with a correction value calculating function for obtaining a correction value of the tooth runout.

Next, a case where the correction value of the tooth runout of the parent gear 7 is obtained by the correction value calculating function of the measuring means 15 of the tooth runout measuring device 10 will be described with reference to the flowchart shown in FIG.

In this flowchart, step S1
Steps S7 to S7 are measurement steps for determining the inter-axis distance (first inter-axis distance) Li between the parent gear 7 and the work 3 for the number of teeth of the parent gear 7, and steps S10 to S14 are steps in which the parent gear 7 This is a measurement step of determining an inter-axis distance (second inter-axis distance) Lj from the workpiece 3 from the state shifted by 180 ° for the number of teeth of the master gear 7.

Step S1 Based on the timing signal 11a from the proximity switch 11, it is determined whether or not the teeth of the parent gear 7 have been detected by the proximity switch 11.

Step S2 If it is confirmed that the proximity switch 11 has detected the teeth of the master gear 7, the rotation angle of the rotary shaft 4 on which the workpiece 3 is mounted is determined based on the position detection signal 21a from the position detector 21. Is stored in the storage section of the measuring means 15 as the tooth position W of the work 3.

Step S3: Based on the position detection signal 13a from the position detector 13,
The rotation angle of the rotation shaft 5 to which the parent gear 7 is attached is
The tooth position M of the parent gear 7 is stored in the storage unit of the measuring means 15.

Step S4: The distance between the rotary shaft 4 on which the workpiece 3 is mounted and the rotary shaft 5 on which the parent gear 7 is mounted is measured by the displacement sensor 14.

Step S5 The displacement signal 14a output from the displacement sensor 14 is stored in the storage section of the measuring means 15 as the inter-axis distance Li.

Step S6 It is determined whether or not the data of the distance Li between the shafts 4 and 5 has been detected by the number of teeth of the master gear 7. If the data of the inter-axis distance Li has not been detected for the number of teeth of the parent gear 7, the process proceeds to step S7, and the data of the inter-axis distance Li for the number of teeth of the parent gear 7 has been detected. Is the step S8
Move to.

Step S7 Based on the timing signal 11a from the proximity switch 11, it is determined whether or not the teeth of the parent gear 7 are detected by the proximity switch 11, and the teeth of the parent gear 7 are detected by the proximity switch 11. In such a case, the processing after step S3 is performed again. That is, until the data of the inter-axis distance Li is detected for the number of teeth of the parent gear 7, the processing after step S3 is repeatedly performed. In step S3, only the first detected tooth position is stored as M in the storage unit of the measuring means 15.

Step S8: Based on the timing signal 11a from the proximity switch 11, it is determined whether or not the teeth of the parent gear 7 have been detected by the proximity switch 11, and the teeth of the parent gear 7 have been detected by the proximity switch 11. In this case, the process proceeds to step S9.

Step S9 In a state where the tooth position of the work 3 is the tooth position W stored in the storage section of the measuring means 15, the tooth position of the parent gear 7 is stored in the tooth position M stored in the storage section of the measuring means 15. It is determined whether there is a 180 ° shift. In other words, the determination is repeated until the tooth position of the parent gear 7 is shifted by 180 ° from M, and if it is determined that the tooth position of the parent gear 7 is shifted by 180 ° from M, the process from step S10 is performed. The measurement process of the axis distance Lj is started.

Step S10 Based on the timing signal 11a from the proximity switch 11, it is determined whether or not the teeth of the parent gear 7 have been detected by the proximity switch 11.

Step S11 Based on the position detection signal 13a from the position detector 13,
The rotation angle of the rotation shaft 5 to which the parent gear 7 is attached is
This is detected as the tooth position of the parent gear 7.

Step S12 The distance between the axis of the rotary shaft 4 on which the workpiece 3 is mounted and the rotary shaft 5 on which the parent gear 7 is mounted is measured by the displacement sensor 14.

Step S13 The displacement signal 14a output from the displacement sensor 14 is stored in the storage section of the measuring means 15 as the distance Lj between the axes.

Step S14: It is determined whether or not the data of the distance Lj between the shafts 4 and 5 has been detected by the number of teeth of the master gear 7. Here, if the data of the inter-axis distance Lj has not been detected for the number of teeth of the parent gear 7, the process proceeds to step S10, and the data of the inter-axis distance Lj for the number of teeth of the parent gear 7 has been detected. Is the step S
Move to 15. That is, until the data of the distance Lj between the shafts is detected by the number of teeth of the parent gear 7, the processing after step S10 is repeatedly performed.

Step S15 A correction value of the tooth runout of each tooth of the master gear 7 is obtained from the difference between the shaft distances Li and Lj obtained in the above-described process. That is, when the data Li and Lj of the inter-axis distances in which the parent gear 7 is shifted by 180 ° and the tooth runout is in the opposite phase to each other are subtracted from each other, the tooth runout value of the work 3 having the same phase of the data Li and Lj becomes The value of the runout of the parent gear 7 (2
Only the double tooth runout remains, and the correction value of the parent gear 7 is obtained based on the value of the tooth runout of the parent gear 7.

The tooth runout measuring device 10 corrects the measured value by the correction value of the parent gear 7 obtained in the above steps S1 to S15 when performing the tooth runout test of the work 3 thereafter, and Accurate measurement results can be obtained.

As described above, the tooth runout measuring device 1 having the above-described structure is used.
According to 0, the position detector 21 for detecting the rotational position of the work 3 is provided, and the work 3 together with the master gear 7 is detected from the tooth positions of the master gear 7 and the work 3 detected by the position detector 13 and the position detector 21. By rotating, the data of the inter-axis distance Li for the number of teeth of the parent gear 7 detected by the displacement sensor 14 and the tooth position of the workpiece 3 at the start of the detection of the data of the inter-axis distance Li are set, and the parent gear 7 is From the state where the tooth position is shifted by 180 ° with respect to the tooth position at the start of the detection of the data of the axis distance Li, the work 3 together with the parent gear 7
, The data of the center distance Lj corresponding to the number of teeth of the parent gear 7 detected by the displacement sensor 14 are subtracted from each other to obtain a correction value for correcting the tooth runout of each tooth of the parent gear 7. Since the value calculation function is provided in the measuring means 15,
The measuring means 15 can determine the correction value of the run-out of the parent gear 7 as a reference very quickly. After that, the measuring means 15 determines the run-out of the work 3
The tooth runout data of the work 3 can be measured with high accuracy by correcting the data of the runout of the workpiece 3 with a correction value obtained in advance.

Thus, the distance between the axes of the parent gear 7 and the workpiece 3 is calculated by measuring a set of the number of teeth of the parent gear 7 × the number of teeth of the workpiece 3 and calculating the correction value of the tooth runout of the parent gear 7. Compared with the conventional device which had to be determined, the correction value can be calculated in a very short time and easily, and the work for measuring the runout of the workpiece 3 can be started quickly.

[0038]

EXAMPLE Next, as a specific example, when the number of teeth of the parent gear 7 is 10 and the number of teeth of the workpiece 3 is 9,
The case where the correction value of the tooth runout is obtained will be described with reference to FIG. The tooth runout of the parent gear 7 is shown in FIG.
The tooth runout of the parent gear 7 when the tooth position of the parent gear is shifted by 180 ° is (e) in FIG. The runout of the workpiece 3 is shown in FIG.

First, the master gear 7 and the work 3 are engaged with each other, and a correction value of the tooth runout of the master gear 7 is obtained by the above-described process. That is, the teeth of the parent gear 7 are detected by the proximity switch 11, the tooth positions of the parent gear 7 and the work 3 are detected and stored by the position detector 13 and the position detector 21, and then the first detected tooth is set to 1 The distance between the axes Li for the number of teeth of the parent gear 7 is set as the first to tenth displacement sensors 1
4 to detect. The data of the axis distance Li is shown in FIG.

Next, from the state where the work 3 is set to the tooth position stored as described above and the tooth position is shifted by 180 ° from the tooth position stored in the parent gear 7, the inter-axis distance for the number of teeth of the parent gear 7 is changed. Lj is detected. That is, from the state where the workpiece 3 is at the first tooth position and the parent gear 7 is at the sixth tooth position, the inter-axis distance Lj corresponding to the number of teeth of the parent gear 7 is detected by the displacement sensor 14. The data of the inter-axis distance Lj is shown in FIG.

By subtracting the inter-axis distances Li and Lj from each other, the value (c) of the runout of the work 3 is eliminated, and the value (f) in FIG. Is obtained.

[0042]

As described above, according to the gear runout measuring device and the method of correcting the same according to the present invention, the following effects can be obtained. According to the gear runout measuring device of claim 1, a work position detector for detecting a rotational position of the work is provided, and a parent gear position detector and teeth of the parent gear and the work detected by the work position detector. By rotating the work together with the parent gear from the position, the first inter-axis distance data for the number of teeth of the parent gear detected by the displacement sensor and the tooth position at the start of the first inter-axis distance data detection for the work are determined. By rotating the work together with the parent gear from a state where the gear is shifted from the tooth position at the start of detection of the first inter-axis distance data by 180 ° to the number of teeth of the parent gear detected by the displacement sensor, Second
The correction means for calculating the correction value for correcting the runout of each tooth of the parent gear by subtracting the inter-axis distance data from each other is provided in the measuring means. Can be determined very quickly.
After that, the measuring means corrects the data of the runout of the work with the correction value obtained in advance when measuring the runout of the work, and can measure the runout of the work with high accuracy. As a result, the distance between the axes of the parent gear and the workpiece must be measured and calculated for the number of teeth of the parent gear x the number of teeth of the workpiece, and the correction value for the tooth runout of the parent gear must be calculated. Compared with the device, the correction value can be calculated in a very short time and easily, and the work for measuring the runout of the workpiece can be started quickly.

According to the correction method of the tooth runout measuring device of the second aspect, by rotating the work together with the parent gear, the first inter-axis distance corresponding to the number of teeth of the parent gear is detected, and the work is moved to the first position. By rotating the work together with the parent gear from a state in which the tooth position at the start of the detection of the distance between the single axes and the parent gear are shifted from the tooth position at the start of the detection of the distance between the first axes by 180 °, the parent gear is rotated. Since the second inter-axis distance corresponding to the number of gear teeth is detected and the first inter-axis distance and the second inter-axis distance are subtracted from each other, a correction value for correcting tooth runout for each tooth of the parent gear is obtained. Compared with the conventional case where the distance between the axes of the parent gear and the workpiece is measured and calculated by the number of teeth of the parent gear x the number of teeth of the workpiece to calculate the tooth runout correction value of the parent gear, The correction value can be calculated in a very short time and easily. Can be started quickly.

[Brief description of the drawings]

FIG. 1 is a schematic plan view of a tooth runout measuring device illustrating a configuration and a structure of a gear tooth runout measuring device according to an embodiment of the present invention.

FIG. 2 is a schematic front view of the gear runout measuring device illustrating the configuration and structure of the gear runout measuring device according to the embodiment of the present invention.

FIG. 3 is a flowchart illustrating a procedure for explaining a correction method in the gear runout measuring device according to the embodiment of the present invention.

FIG. 4 is a diagram illustrating signals, tooth runout, and correction values according to the embodiment of the present invention.

FIG. 5 is a schematic plan view of a tooth runout measuring device illustrating a configuration and a structure of a conventional gear tooth runout measuring device.

FIG. 6 is a schematic front view of a tooth runout measuring device illustrating a configuration and a structure of a conventional gear tooth runout measuring device.

[Explanation of symbols]

 Reference Signs List 3 work 7 parent gear 10 tooth runout measuring device 13 position detector (parent gear position detector) 14 displacement sensor 15 measuring means 21 position detector (work position detector) Li distance between axes (first distance between axes) Lj axis Distance (2nd axis distance)

Claims (2)

[Claims] 1. A tooth runout measuring device for measuring a runout of the work relative to the parent gear by rotating a work which is a gear to be measured by meshing the work with a parent gear serving as a reference. A displacement sensor that measures a distance between a rotation axis of the work and the main gear, a main gear position detector that detects a rotational position of the main gear, and a detection signal from the displacement sensor and the main gear position detector. A work position detector for detecting a rotational position of the work, wherein the measurement means is provided by the main gear position detector and the work position detector. By rotating the work together with the master gear from the detected tooth positions of the master gear and the work, a first inter-axle distance corresponding to the number of teeth of the master gear detected by the displacement sensor. When the workpiece is first
The workpiece is rotated together with the parent gear from a state where the tooth position at the start of the detection of the inter-axis distance and the tooth position of the parent gear are shifted by 180 ° from the tooth position at the start of the detection of the first inter-axis distance. A correction value calculation function for obtaining a correction value for correcting tooth runout for each tooth of the parent gear by subtracting the second inter-axis distance for the number of teeth of the parent gear detected by the displacement sensor from each other. A gear runout measuring device, comprising: 2. A correction method for a tooth runout measuring device that meshes and rotates a work as a measured gear with a parent gear serving as a reference, and measures the runout of the work relative to the parent gear, By rotating the work together with the parent gear, the first inter-axis distance for the number of teeth of the parent gear is detected, the work is set as the tooth position at the start of the first inter-axis distance detection, and the parent gear is set as the main gear. By rotating the work together with the parent gear from a state where the tooth position is shifted by 180 ° from the tooth position at the start of the first inter-axis distance detection, the second inter-axis distance for the number of teeth of the main gear is reduced. And detecting a correction value for correcting a runout of each tooth of the parent gear by subtracting the first inter-axis distance and the second inter-axis distance from each other. Correction method.