SU1070424A1 - Method of checking gear-grinding machines - Google Patents

Abstract

SPEECH CONTROL OF TEETH WHEELS ON THE TOOTH-GRINDING MACHINES, consisting in that they orient the controlled wheel on both side surfaces of its teeth relative to the measuring tool and measure the deviation of the allowance on both side surfaces of the teeth with its simultaneous recording, about 100 mm. and in order to increase the information content of the control and ensure the orientation of the cutting tool relative to the wheel, before measurements, the wheel is centered, after registering the allowance, the controlled the wheel is measured halfway through the maximum deviations of the allowances of the right and left side surfaces of its teeth; the deviation of the allowance is re-measured and the allowance deviation is recorded; different names of the surface teeth with the same | deviations of allowances and on them orient the cutting tool with respect to the controlled wheel.

Description

The invention relates to mechanical engineering, namely to means and methods for controlling gear wheels. A method of controlling gear wheels is known, which consists in measuring the tangential displacement of one of the side surfaces of all the teeth of the wheel being monitored and constructing the cumulative error of the wheel step Cl5. The disadvantage of this method is that it is impossible to analyze the deviation of one surface of the wheel teeth. the relative position of the errors on the right and left side surfaces of the teeth. The closest to the proposed technical essence is a method of controlling gears on gear grinding machines, which consists in orienting a controlled gear on both side surfaces of its teeth with a cooling measuring tool and measuring the deviation of the allowance on both side surfaces of teeth with his simultaneous recording of C23 "The disadvantages of this method are laboriousness and lack of accuracy when focusing on the gear grinding machine gears relative to the cutting tool The purpose of the invention is to increase the information content of the control and ensure orientation of the cutting tool relative to the wheel. This goal is achieved in that according to the method of controlling gear wheels on grinding machines, the principle is to orient the controlled wheel on both side surfaces of its teeth relative to the measuring tool and measure the deviation of the allowance on both side surfaces of the teeth with its simultaneous record, before measurements, the wheel is centered, after registration of the allowance, the value of the half-difference of the maximum deviations of allowances of the right and left sides over the awns its teeth pavtorno measured and recorded The discrepancy between the allowance, it is determined raznoime nye surface of teeth with the same allowances and deviations thereon orient the cutting tool with respect to the controlled wheel. FIG. 1 shows a schematic diagram of a device on which the method of FIG. 2 can be carried out. 2 shows section A-A in FIG. one; in fig. 3 shows section B in FIG. one; in fig. 4 - combined diagrams of the distribution of the allowance on both side surfaces of the teeth before and after turning the wheel relative to the dividing disk, where 0-0 is the zero line of the allowance; 1.5, ..., 33, 37 is the serial number of the gear wheel cavities; 1 and II 1 are the deviation curves of the allowance after the initial installation of the wheel relative to the dividing disk, respectively, along the left and right sides of the surfaces of the teeth; K and M are the troughs with the maximum allowance for the right and left side surfaces of the teeth, respectively; Р is the difference between the maximum allowances; W and 1U - curves of deviation of allowance for teeth, opifovanie after turning gear; V is the angular distance between the teeth covered by the side surfaces of grinding wheels located in different wheel cavities; A, C, D, B - Depression depressions for the orientation of the gear on the teeth of the grinding machine with respect to the grinding wheels located in different cavities of the wheel; B and D - adjustment valleys for the orientation of the gear on the gear grinding machine relative to the grinding wheels, located: in one cavity of the wheel; S - the difference between the maximum allowance and the allowance in the adjustment depressions; p - - the minimum allowance for teeth orfishing. The device for controlling gears contains a separating mechanism consisting of a separating disc 1, a retainer 2 and a drive 3. On the plate 4 a device 5 is fixed for turning, fixing and counting the magnitude of the rotation of the face plate 4, interacting with the stop installed on the separating disk 1 shown). The controlled gear wheel b is based on the faceplate 4. Device 7 with the indicator of the alignment of the beats of the base surface of the wheel b is fixed on the fixed hub, which is the axis of rotation of the separating disk 1, against the carriage 8 mounted on the frame 9 of the device and which is measured during measurement by the carriage drive 10 8 in the radial direction to the axis of the gear. The carriage 8 is equipped with measuring blocks 11 and 12, containing measuring tips 13 and a clamp 14 for radial movement and orientation of the gear wheel 6. Measuring tips 13 are mounted on the body of the carriage 8 so that, when measured, they are in the plane perpendicular;

wheels b, in one or different of its depressions, symmetrical to the axis of the trough or zuva wheel b.

The measuring units 11 and 12 determine the allowances on the left and right side surfaces of the teeth, converting the mechanical movements of the measuring tips 13. The outputs of the measuring units 11 and 12 are connected via a switch (not shown) to the recording device 15, which converts the electrical signals into mechanical peremaceni the pen is proportional to the size of the allowance, since the amount is taken from the lower limit of the cavity (tooth thickness). The latch 14 is intended for orientation of the gear wheel 6 flax measuring tip 13 and to bias it in alignment runout bazrvoy its surface.

The cycle control device 16 consists of a command unit, a control unit (not shown) and a system of limit switches. A command block (not shown) sends commands to KOMMjjTaTOp, to registering device 15 to move its tape to a predetermined step and to a control unit. After measuring all the teeth, the command block commands the end of the working cycle.

The control unit on the command of the command unit performs the division by the required number of angular steps and the approach (retraction) of the carriage 8 with the measuring blocks 11 and 12.

A group of ‑ limit switches gives a signal to the command unit to finish the approach (retract) of the carriage 8 to the measurement zone and to turn the separating disc 1 by one angular step.

The method of controlling gears using the device is carried out as follows.

The gear wheel 6 is mounted on the face plate 4 and with the help of the device 7 for alignment of the beat with the base of the surface of the wheel being monitored with the indicator swash the beating of the base surface of the wheel 6 is twice the eccentricity; the sector with the maximum runout is marked on the gear wheel 6, then the tooth (depression) located in the sector with the maximum beat of the base surface is fed into the area of the latch 14 of the carriage for the radial movement and orientation of the gear wheel; the angular position of the dividing disk 1 is fixed by the latch 2 of the dividing disk and using the lock 14, the axis of the gear 6 is shifted by the amount of eccentricity.

The readout of the movement of the wheel b is made on the readout indicator. After that, the gear wheel b is fixed on the face plate 4 and the measurement cycle begins.

On command from the cycle control device 16, the carriage 8 with the measuring units 11 and 12 is supplied as far as it will go in the direction of the axis of the wheel b. After the carriage is supplied by a signal from the carriage end switch switch 8, the linear displacement sensors of the measuring units 11 and 12 are alternately connected to the recording device 15. During the connection of the sensors to the recording device 15, the tape is transferred. As a result, after the measurement, two horizontal lines will be alternately drawn on the tape, characterizing the tangential smearing of the measured lateral surfaces of the teeth, the length of which is proportional to the sensor connection time and the speed of the tape, and the offset from the zero line to the amount of allowance on the measured lateral surface of the tooth. After removing the psjas from both measuring units, by a command from the cycle control device 16, the carriage 8 will be secured from the wheel axis 6 until it stops and the signal from the end switch of the carriage 8 retracts the latch 2 of the dividing disk out of the slot of the dividing disk 1, the latter is rotated by a specified number of angular steps and is fixed by latch 2 According to a signal from the limit switch of latch 2 of the dividing disk, the carriage 8 is brought into the measurement zone and the measurement cycle is repeated. After measuring all the teeth on command from the cycle control device 16, the measurement cycle ends.

As a result of measurement, a combined distribution pattern of the allowance over both side surfaces of the teeth of the wheel 6 will be drawn on the chart tape of the recording device 15.

Assume that before gearshipping wheel b must be installed with respect to grinding wheels in. is the angular position, so that the difference P between the maximum allowances for. both side surfaces of the teeth were zero, which would ensure a minimum allowance for gear grinding.

The difference P of the maximum allowances for the left and right side surfaces of the teeth of the wheel is determined from the liatram of the allowance. B. The plate 4 using the device 5 for turning, fixing and counting the magnitude of rotation of the faceplate is deployed relative to the dividing disk 1 in the direction of the side surface with the largest allowance (left) at an angle. proportional to the half-difference P / 2 of the maximum allowances, fixing the end of the turn according to the indicator of the device 5, and after the turn is fixed. Then, the measurement cycle is repeated with the new angular position of the gear wheel b relative to the dividing disk 1. As a result, new measurements are repeated to draw the combined distribution diagram of the allowance on both side surfaces of the teeth (curves W and PG in Fig. 3). According to this diagram, the lateral surfaces of the teeth of the adjusting troughs are determined, with the orientation of which the gear wheel 6 on the machine relative to the grinding wheels will achieve the same relative position of the side teeth of the wheel 6 as after turning the faceplate 4 relative to the measuring tips 13. With gear grinding by circles located in different cavities of the wheel 6 (the left circle processes the left side surface of the tooth, and the right one - the right one), these can be cavities A and B or cavities D and E, located from each other on angle spacing x /. When gear grinding with circles located in the same trough of the wheel, it can be depressions B or D. The entry depressions are marked on the cogwheel 6. After determining the set-up depressions, the difference Sme) is entered into the maximal allowance (depressions K and M) and the set-up of the setpoint depressions. After orientation of the gear wheel on the machine with respect to grinding wheels on the side surfaces of the teeth of the adjusting troughs, the wheels are moved away from them for a distance equal to or proportional to S. The optimum mutual position of the left and right side surfaces of the wheel teeth on the machine relative to grinding wheels reduces the gear grinding allowance. The likelihood of occurrence of a draft, undercuts and protrusions on the transitional surface at the foot of the tooth. The removal of the grinding wheels after the orientation of the gear on the machine along the side surfaces of the teeth of the adjusting troughs by an amount of 3 prevents an increase in the depth of cut on the first pass in the sectors of the gear ring of the wheel with the largest allowance. The use of the invention will ensure the radial distribution of the allowance on both side surfaces of the wheel teeth on the gear grinding machines and the optimal positioning of the grinding wheels before grinding, which will increase productivity. and the quality of machining gears of a high degree of accuracy.

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Claims (1)

METHOD FOR CONTROLLING GEAR WHEELS ON GRINDING MACHINES, which consists in the following: · orient the controlled wheel along both side surfaces of its teeth relative to the measuring tool and measure the deviation of the allowance on both side surfaces of the teeth with its simultaneous recording, characterized in that, in order to increase the information content of the control and the orientation of the cutting tool relative to the wheel, the wheel is centered before measurements, after registering the allowance, the controlled wheel is turned by elichinu half-maximal deviation margins of the right and left side surfaces of its teeth, repeatedly measures and records the deviation allowance is determined raenoimen- § nye surface of teeth with the same allowances and deviations · thereon ori- I / F entiruyut cutting instrumentaotnosi-] Tel'nykh controlled wheel. | G '1070424