JPS61253415A - Gear tooth measurement data processing apparatus - Google Patents

Abstract

PURPOSE:To realize automated data processing of measured values, by operating, with a CPU, measured values of tooth form and tooth trace measured by a gear tester. CONSTITUTION:A displacement distance in the X-axis direction of a pen 2 of a pen-recorder 1 linked with a gear tester is introduced into a CPU 7 after conversion into digital signals through absolute amplifier 5, A/D convertor 8 and I/O circuit 9, and at the same time, a displacement distance in the Y-axis direction of a sheet of recording paper set onto a rotating drum 4 is introduced into the CPU 7 after conversion into digital signals through absolute encoder 6 and I/O circuit 9. The CPU 7 provides firstly gear form measurement curve data from data in X- and Y-axis directions and memory data of a memory 10. Next, upon concluding data processing at the time of measurement of tooth form error, measurement of the gear tooth from error is conducted and further, gear trace measurement curve and amount of inclination of the gear trace are obtained. By repetition of these kinds of measuring actions, measurement data of many gears is available.

Description

[Detailed description of the invention] Industrial prosperity and public! The present invention relates to a peak measurement data processing device for measuring the tooth profile and tooth trace of a gear and automatically processing the data based on the measurement results.

The gears used in the transmission of automobiles are inspected at random when they are assembled into the transmission, and the gears (a) are inspected as shown in Figure 3.
Measure tooth profile (α) and tooth trace (β). By analyzing this measurement data, we are able to correlate machining errors of the gear (A) with gear noise.

As mentioned above, when measuring the tooth profile and tooth trace of a large number of gears and analyzing the data, a gear testing machine (b) as shown in FIG. 4 is used. This gear testing machine (b) is
A lever (E) supported by a support arm (C) via a pivot bearing (D) and a pivot pin (E), a probe (G) fixed to the tip of the lever (E), and a lever (E). It consists of a detector (ch) that detects the movement of the sensor and converts the movement into an electrical signal. Then, move the probe (G) of the gear testing machine (B) to the tooth surface (
In this state, the gear (A) is rotated by a predetermined angle, and the movement of the probe (G) at this time is detected by the detector (H) via the lever (H). In addition, by applying relative movement in the axial direction of the gear to be measured (A) and detecting the movement of the probe at this time with the detector (H) via the lever (H), the direction of the tooth trace can be measured. Measuring the error. The data measured in this way is recorded on recording paper by a pen recorder linked to the gear testing machine (b).

Figures 5 and 6 show examples of recording on recording paper. Figure 5 shows an example of recording measurement data when measuring a tooth profile, and Figure 6 shows an example of recording measurement data when measuring a tooth trace. It is.

In Figure 5, (A) shows the pressure angle error on the top of the tooth, and (B
) indicates the pressure angle error of the lower white part, (D) indicates the amount of tooth profile bulge, and (C) indicates the standard value predetermined for each gear to be measured. Point P becomes the engagement point. Further, in FIG. 6, (E) shows the amount of inclination of the tooth trace, and (F) shows the amount of crowning. In addition, for both the image recording data, 10% of both ends of the measurement curve in the feeding direction from the measurement start point to the end point are cut off, and the remaining portion is used as the effective measurement range.

As described above, measurement data is recorded for each gear, and when a predetermined amount of recorded results have been accumulated, the operator reads the data recorded on the recording paper one by one and tallies this data. By taking the data, we are analyzing the gear measurement data.

8 < ° ° W31 As described above (record the measurement data for each gear on recording paper with a pen recorder linked to the gear testing machine (b),
When a predetermined amount of this data has been accumulated, if an operator reads the data recorded on the recording paper sheet by sheet and analyzes the gear measurement data, it will take a lot of time to analyze.
There was a problem in that errors were likely to occur due to individual differences among workers.

A gear measurement data processing device that processes the gear measurement data, a gear testing machine that measures the tooth profile and tooth trace of the gear, and a gear testing machine that converts the measurement values measured by the gear testing machine into digital signals. A data converter is used to calculate the pressure angle error on the tooth profile,
In addition to calculating the tooth lower pressure angle error and the amount of tooth profile bulge,
Calculate the tooth trace inclination and crowning amount, and
A central processing unit for performing data processing such as comparison and judgment of calculated values with standard values, a storage device for storing data calculated by the central processing unit, and a display of the calculated data. It consists of a display unit for performing calculations, and a printer for printing calculated data.

After converting the measurement values measured by the disc gear testing machine into digital signals, the central processing unit inputs the measured values, and the central processing unit performs various data processing. It automates data processing based on muscle measurements.

FIG. 1 is a block diagram showing the configuration of the tooth measurement data processing device according to the present invention, and (1) in the figure is a pen recorder linked to the gear testing machine (B) shown in FIG. be. This pen recorder (1) consists of a pen (2) for recording measured values on recording paper, a head section (3) for swinging the pen (2) in the X-axis direction, and a It consists of a rotating drum (4) for moving the recording paper in the Y-axis direction, and (5) is proportional to the current value flowing through the head (3) for swinging the pen (2) in the X-axis direction. An absolute amplifier for detecting voltage and converting the movement of the pen (2) in the X-axis direction into an electrical signal, (6) is a rotating drum (4
) is an absolute encoder that converts movement in the Y-axis direction on the recording paper into an electrical signal by detecting the rotation angle of the recording paper. (7) is the X-axis direction data sent from the absolute amplifier (5) via the A/D converter (8) and the 110 circuit (9), and the data sent from the absolute encoder (6) via the 110 circuit. This is a central processing unit W (hereinafter referred to as CPU) for performing data processing based on the data in the Y-axis direction sent from the CPU. (10) is CP
LJ (7) is the memory that stores the data necessary for data processing, (11) is the CPU (7)
The data necessary for data processing is transferred to the CPU (
This is a keyboard for inputting data to 7). (
12) is a floppy disk for storing the data processed by the CPU (7), (13) is a CRT for displaying the processed data, and (14) is a printer for printing the processed data.

In the above configuration, the probe (G) of the gear testing machine (B) is brought into contact with the tooth surface (A) of the gear to be measured (A), and in this state, the gear (A) is rotated by a predetermined angle. When the tooth profile error is measured by ) and 11
It is converted into a digital signal via the 0 circuit (9) and sent to the CPU (
At the same time, the movement vJf of the recording paper set on the rotating drum (4) in the Y-axis direction is converted into a digital signal via the absolute encoder (6) and the 110 circuit (9), and is then input to cpU (7). Enter. Then, the CPU
In step (7), data of the tooth profile measurement curve shown in the graph of FIG. 5 is first obtained from this data and the data stored in the memory (10). Next, cut 10% of each end of the tooth profile measurement curve from the measurement start point to the tooth tip in the feed direction, and calculate the cut points, points a and b. By finding the point P at a position separated by the standard value (C) corresponding to the gear to be measured (A), which is pre-centred in (10), the meshing point on the tooth profile measurement curve of the gear to be measured (A) is determined. By determining the distance (A) in the horizontal axis direction between the 0th order point a and the P point, the pressure angle error on the top of the tooth is determined.The axial distance between the 0th order point b and the P point. By determining (B), the pressure angle error on the top of the tooth is determined. Next, the amount of tooth profile bulge (D) is determined from a straight line connecting points a and b. Once the data processing during tooth profile error measurement is completed in this way, the probe (G) of the gear tester (B) is brought into contact with the tooth surface (A°) of the gear to be measured (A). By applying relative motion in the axial direction of the gear to be measured (A), the tooth trace error is measured.

Then, as described above, the amount of movement of the pen (2) of the pen recorder (1) linked to the gear testing machine (b) in the X-axis direction is
) and 110 circuit (9) and is input to the CPU (7). At the same time, the amount of movement in the Y-axis direction of the recording paper placed on the rotating drum (4) is input to the absolute encoder (6) and The signal is converted into a digital signal via the 110 circuit (9) and input to the CPU (7). Then, C
In PU (7), this data and memory (10),
First, the data of the tooth trace measurement curve shown in the graph of FIG. 6 is obtained from the data stored in the internal memory. Next, 10% of each end of the tooth trace measurement curve from the measurement start point to the end point in the feed direction is captured to determine the force, the toshi point, the P point, and the Q point. Next, fill the distance in the horizontal axis direction between point P and point Q.
By determining (E), the amount of tooth trace inclination is determined. Next, the amount of crowning (F) is determined from the straight line connecting point P and point Q.

In this way, the data processing during tooth trace measurement is completed, and when the measurement for one gear (A) is completed, the data regarding the tooth profile and tooth trace of this gear (A) are set on the floppy disk (10). recorded on the diskette.

In addition, during actual measurement, for one gear (A), in the case of a tooth profile, two locations are measured on the left and right tooth flanks, and in the case of tooth traces, measurements are taken at two locations on the left and right tooth flanks. Measure at 4 locations each. When the measurement and data processing of one gear (A) is completed, this data is recorded on the diskette as described above, and at the same time, it is stored on the CRT (1) as shown in Figure 2.
3) is displayed on the screen. The display contents include a graph display of the effective measurement range of the tooth profile measurement curve and tooth trace measurement curve, graph deviation and feed magnification, pressure angle @ difference (A) on the top of the tooth,
These include the display of the pressure angle error on the upper part of the tooth (B), the amount of tooth profile bulge (D), the amount of inclination of the tooth trace (E), the amount of crowning (F), and the average value for each display content. Father above calculated value (A) (
If B) (D) (E) (F) exceeds a predefined standard range, for example, only that part is displayed in red to distinguish it from the others. As described above, the measurement of one gear (A) is completed, and the measurement data at that time is displayed on the CRT.
When the screen (13) is displayed, the measurer decides whether the gear (A) that was just measured passes or fails based on the data displayed on this screen, and inputs the result using the keyboard (11). The data processing for one gear (a) is completed by inputting the measurement results to the CPU (7) using the data and, if necessary, printing the measurement results on a predetermined paper using the printer (14).

Finally, by repeating the above measurement operation, a large number of gears (
The measurement data of (a) is accumulated in the diskette, and when a predetermined amount of measurement data is accumulated, various calculations are performed in the CPU (7) based on this data, for example, the average value of past measurement values is calculated. calculate the amount of variation, etc., and perform data analysis. If necessary, the average value and amount of variation of the measured values can be visually viewed by superimposing the measured curve data stored in the diskette on the screen of the CRT (13).

In the above embodiment, an example was described in which the movement of the pen (2) of the pen recorder (1) in the X-axis direction in conjunction with the gear test i (b) was detected using the absolute amplifier (5). , If the pen recorder (1) is mechanical, the movement of the pen (2) of the pen recorder (1) in the X-axis direction is electrically detected by an image sensor camera, and this data is sent to a video control unit, Micro sequencer and 1
It may also be input to CPtJ (7) via 10 circuits.

As mentioned above, the present invention converts the measurement values measured by a gear testing machine into digital signals, inputs them into the CPU, and converts them into digital signals.
By performing various data processing using the PU, we have automated the data processing based on the measured values of the tooth profile and tooth trace of the gear measured by the gear testing machine.
By having the operator read the data recorded on the recording paper sheet by sheet and tabulating this data, there is no need to analyze gear measurement data, and the time required to analyze gear measurement data can be significantly shortened. . Furthermore, by automating the reading of measurement data, errors due to individual differences among workers are reduced and analysis accuracy is improved.

[Brief explanation of drawings]

Fig. 1 is a block diagram showing the configuration of the gear measurement data processing device, Fig. 2 is a drawing showing an example of display on a CRT, Fig. 3 is an explanatory diagram showing measurement points on a gear, and Fig. 4 is a diagram of a gear testing machine. It is a perspective view showing an example. FIG. 5 is a graph showing a tooth profile measurement curve during tooth profile measurement, and FIG. 6 is a graph showing a tooth profile measurement curve during tooth profile measurement. (a) --- Gear, (b) -- Gear testing machine, (1) ---
Pen recorder, (5) - Absolute amplifier, (6
) - Absolute encoder, (7) - Central processing unit (CPU), (8) - A/D converter, (
9)--110 circuits, (1o)--memory, (12)
・-・Floppy disk, (13) −・CRT,
(14) --- Printer. Figure 8J Figure 5Figure 6

Claims (1)

[Claims] (1) A gear testing machine that measures the tooth profile and tooth trace of a gear, a data converter that converts the measured values measured by the gear testing machine into digital signals, and the measured values that are converted into digital signals by the data converter. From this, the upper tooth pressure angle error, lower tooth pressure angle error, and tooth profile bulge amount of the tooth profile are calculated, as well as the tooth trace inclination and crowning amount of the tooth profile.
Also, a central processing unit for performing data processing such as comparison and judgment of calculated values with standard values, a storage device for storing data calculated by the central processing unit, and a storage device for storing the calculated data. A tooth measurement data processing device comprising a display unit that displays information and a printer that prints calculated data.