JPS58161802A - Method for testing intermeshing of gears - Google Patents

Abstract

PURPOSE:To simplify the testing while keeping the accuracy by intermeshing the gear to be measured with a rotating master gear so that a central distance can be changed, blowing the air to the part of the gear to be measured, which is located before the intermesh, thereby removing attached substances. CONSTITUTION:The master gear 6 is mounted to a shaft 5 on the moving side which is provided uprightly on a fixing table 4 of a machine table 3 in a measuring part. The gear to be measured 10 can be mounted on the shaft on the following side which is provided on a movable table 8 on the machine table 3. Since the central distance of said master gear is changed by the change in the thickness of the gear, the maximum value and the minimum value of the central distance owing to backlash are considered when the gear is provided. The air is blown to the part in front of the intermesh of the rotating gear to be measured and the attached material is removed. In this constitution, the testing method can be simplified while keeping the accuracy.

Description

[Detailed description of the invention] The present invention relates to a gear meshing test method.

With the rapid development of the mechanical industry, especially the automobile industry, the number of companies using gears is increasing, and quality control of large quantities of gears has therefore become an important issue. Unlike the measurement method for each individual error, gear meshing tests can determine the quality of all teeth in a short time under conditions close to actual usage conditions, so it is widely used in mass production sites such as automotive gears. ing. The mesh test Wkvc is
Although there is also a one-tooth meshing test with a fixed center distance, the present invention relates to a two-tooth meshing test with a fixed center distance.

The two-tooth mesh test is a method in which the parent gear and the measuring gear are pushed together and rotated without backlash, and the amount by which the center distance changes due to the error is measured. Tooth thickness error etc.'l! It is said that there are 11. However, measuring machines using conventional testing methods are expensive, take a long time to measure, have poor productivity, are difficult to install on a production line, and require a separate inspection process.
There was a problem with the vines, which required a separate inspector from the operator.

The present invention relates to a gear meshing test method, and is an object of the present invention to solve the above-mentioned problems of the conventional methods. In other words, the purpose is to simplify the testing method while maintaining accuracy, to be able to accurately identify gears with sufficient accuracy in large quantities, to significantly reduce the cost of the testing machine, and to shorten the measurement time. It is an object of the present invention to provide a gear meshing test method which is designed to shorten the time by -1 and which is installed on a production line so that workers can easily and quickly test the gears themselves.

The invention will be explained below by means of illustrated embodiments.

(5) is a testing machine, which consists of a measuring section +1+ and a display section (2).

The measuring part +11 has a main gear, 6) mounted on a drive side shaft (5) that is set upright on a fixed base (4) on the machine base (3), and the gear (5) is attached to the machine base (3). It is driven by an internal motor (7), and a tooth to be measured *11111 can be attached to a driven shaft (9) that is erected on a movable base (8) on the machine base (3). Since the center distance of the main gear 181K changes depending on changes in tooth thickness, the center distance should be set in consideration of the maximum and minimum values of the center distance due to permissible pack brushing. motor()
) has a variable speed so that it can be changed depending on the size of the gear, etc., and is set so that VC rotates one and a half revolutions for every measurement of the gear. The movable table (8) has a roller 1 at the bottom.
At the same time, an air cylinder (1:1) is connected via a spring (1) in the machine base (3), and a fixed base (4) is connected during measurement.
), and then retreat after taking measurements. (1
4) is a sensor that uses a linear gauge and has a measuring head +
, fix the stand (4) so that +51 faces the 0T Sendai (8) side.
The movable base (8) approaches the gear +611.
When 1 o 1 is engaged, a contact piece (which can come into contact with the country) provided on the movable table (8) is electrically connected to the display part (2) described later. (17) is a limit switch for starting sensor operation. When the gear 161 uol is engaged, the welding piece (kuni) and the contact (1) installed on the movable base (8)
9) comes into contact and turns on, but a separately installed timer is set so that the output (number g) is output after the gear surface to be measured has rotated 1/2. (201 is an air blower [], C just before meshing of gear 16111Lll, which is rotating sharply
It is fixed on the machine base (3) so that the device is facing.

The display section (2) consists of a comparator t21+ and an indicator light i2.

The comparator 21) is electrically connected to the sensor (14), and displays the 0 scale when receiving the output signal from the timer, and displays the subsequent change in the center distance of both gears +61'1101, and also displays the predetermined The system is designed so that when a tolerance is set and the tolerance is exceeded, an indicator light (2) lights up.This tolerance setting allows for errors due to dimensional variations due to tooth thickness or eccentricity to be detected. If it is within the allowable range, it can be used satisfactorily, so a corrected reference point is established for each gear, and the allowable error is set from there based on the standard error.

In the above configuration, the gear unit (8) is set so that the gear surface to be measured is retracted by the air cylinder (13) after a preliminary half rotation and one subsequent rotation.
If the variation in center distance exceeds the allowable error and the indicator light lights up, the setting is such that the robot moves forward again and undergoes the same meshing test as above. This was done in consideration of the possibility that a foreign object might be bitten by the dragon, and if it lights up even after the second bite, it will be rejected and removed. In the figure (
23) shows the flexible F rail of the movable platform (8). .

Next, the state-of-use effects of the present invention will be explained using the above-mentioned embodiments.

Attach the gear to be measured 11111K corresponding I to the fixed stand (4) on the measuring part Ill of the testing machine (A) to the prefectural side shaft (5) set up upright, and attach the parent gear 16) selected in the gear to be measured 11111 , from the movable table (8) to the vertically installed slave #1) illI axis (9)? tL
Attach the 111 constant gear (10). Other display section (2)
In the comparator (21), a numerical value of the permissible error is set based on the standard error, taking into consideration the permissible range of errors due to eccentricity as described above.

In this state, when the motor 17) is rotated and the air cylinder (13) is driven, the movable base (8) pushed by the air cylinder (13) advances toward the fixed base (4), and the spring t
The gear to be measured 1101 is connected to the main gear (6) through the force of 121.
Press to engage. At this time, the gear is still 161 tl.
The engagement of the OL is sufficient and strong, and the spring t12)K
The vibration caused by the gear has not subsided, and the gear to be measured (10)
There is a possibility that the mesh may be engaged with dirt still attached to the parts, so the zero point, which is the reference point, should not be set at this point. Therefore, in the present invention, a limit switch (1
7) Contact with moving platform (8) moving forward: F-(19)
It hits the contact piece (18) of the fixed base (4) and turns on, but the output signal is not output due to the timer. Thereafter, the rotating measured gear 110) makes a half turn while being blown with air just before the meshing position, during which time the meshing state of the gear 6 (lfll) becomes sufficient, and the spring t121 According to (7), the drjr has subsided and the dust attached to the measuring gear (lO) has also been removed at the meshing position at that point.At this point (7), the Ntr timer is automatically canceled, so the sensor The output signal of 114) is sent to the display unit +2)K, but this: both gears of the festival,
61 The center distance of LIUI is displayed as 0 as the reference value after correction. That is, in the present invention, the center distance is not uniformly set to 1 in advance and then displayed as 0 as a reference value. In consideration of the fact that the center distance changes due to the eccentricity of the gear [111, etc., the dust and dirt attached to each tooth Vcf- at the beginning of meshing are removed by blowing air as described above, and The center distance of the meshed state at the time when the gear to be measured (10) has made one-half rotation is displayed as 0 as a reference value after correction, and subsequent fluctuations in the center distance are measured using that fl as a reference. Thereafter, while the gear to be measured, 10) rotates once due to the rotation of the master drawing wheel (6), the center distance changes in advance. If the fF tolerance range is not exceeded, the gear is tllll Vifr Rakujing, and the movable base (8)
The test ends with il retreated by air cylinder 3). While the gear to be measured -1O) rotates VC1 in the same way as above, the center distance f#J is 1, and if it exceeds Hongreng in the IF- or negative direction, it will be indicated by the output signal from the comparator t21+. When the two lights are turned on, the movable base 8), which had once retreated, automatically moves forward and performs the above-described meshing test again. There is a possibility that the tooth to be measured Φ1lLIlπ may still have dust attached to it at the moment of the first meshing test, so it is necessary to carry out the test again for confirmation. 22) will also be removed as acceptable products. If the case 1- is shown as an error measurement record diagram, for example, the gear to be measured + 1Ll
If the engagement position when l is rotated by 1/2 turn I- is a position where the center distance is set due to eccentricity, etc., as at point P in Fig. 3, the center distance at that point is Base 7% after correction (
It becomes 0 as f4, and the method change -1 of one rotation after that becomes as shown in FIG. 4, for example, in the direction of IE '27. On this occasion,
If a part of the change l1ilI@ exceeds the allowable error, a +4G degree - test is performed as described in @. On the other hand, even if the meshing position when the gear to be measured makes one rotation every two minutes is the maximum distance from the middle due to center a, etc., as shown at point Q in Figure 3, the The center distance becomes 00 as the reference value, and the subsequent dimensional fluctuations are 1111<π in Fig. 5 in the negative direction.
Become. Also, the meshing position is marked F2 as shown by the two points in Figure 3.
If it is between the two cases, the dimension f movement will be as shown in FIG. In both of these figures, the corrected base #
, is within the allowable error difference from the value O, and is a passed product.

The main image [as mentioned above, between the gears to be measured] is the main picture * +6
1 and after a certain period of time after the start of meshing, the center distance at that time is set as 0 as a corrected reference value, and then method 1
1, which determines whether m+ is within the allowable error range, and therefore has the following effects.

■You will be able to take accurate measurements in a short time. That is, immediately after the start of meshing, the meshing was not done correctly (ffi), vibrations caused by the springs remained, and the center distance, which served as a reference point, was inaccurate because there was dirt attached.

However, in the present invention, there is a certain period of time after the meshing starts, and air is blown just before the meshing position to remove dust, so the meshing state after that time is accurate, and the vibration caused by the spring has subsided. There is no more dust attached. Therefore, the dimensions can be accurately measured after the certain period of time has elapsed.

(b) It is possible to identify gears with sufficient accuracy based on the snoring time of the heart chamber. In other words, if the standardized VC inkstone is based on a fixed difference of 1 h, if there is eccentricity, the error will go far beyond the allowable error, and even if there are no tooth dents and can be used in reality, the product will be rejected. I treat it as a product.

In the January release from Shikashiki, as mentioned above, after a certain period of time has elapsed after the start of meshing, the center distance at α is corrected to the base #=value, and from there, the allowable error is set based on the standard error. Therefore, in the present invention, if there is a hit A error and the error can be corrected, it can be determined that it is a disease even if there is no Imperial daughter due to eccentricity, and conversely, if there is an error due to eccentricity etc. - If it is within the tolerance range, it can be used without any scratches, and it can be determined as a passing product, which is a very rational meshing test method. be.

t, j)L The equipment that can carry out this test method is shown in Figure J.
], the groove side is relatively simple and the price is low, and it is sufficient to rotate the gear to be measured 1 or 2 times during the measurement, so it is efficient in short measurement times, and it is also mechanically efficient. Since there are no restrictions, it can be incorporated into the production line and can be easily inspected and identified by workers themselves.

[Brief explanation of the drawing]

The figures show one embodiment of the present invention, where Figure 1 is a schematic plan view of the device used to carry out this method, Figure 2 is a side view thereof, and Figure 3 is a plan view of an eccentric gear to be measured. , FIGS. 4 to 6 are error measurement records. Drawing code (6)... View #a ton, +101... Gear to be measured, (
20) Air outlet, (0) Standard value Applicant Asano Gear Tamasakusho Co., Ltd. Figure 1 Figure 4 Figure 6

Claims (1)

[Claims] (D) The gear to be measured is meshed with the rotating master gear so that the center distance can be varied, and air is blown to the part of the rotating gear to be measured before meshing to remove deposits, and the meshing after a certain rotation is Gear meshing characterized in that a tolerance is set using the center distance in the current state as a reference value, and pass/fail is determined based on whether the fluctuation of the center distance due to subsequent rotation is within the tolerance. Test method.