SU134965A1 - Gear grinding machine, working by the method of rolling with a worm abrasive tool - Google Patents

Description

A known Reyshauer gear grinding machine with synchronous coupling in the rolling chain. The setting of the machine for grinding different numbers of teeth is carried out; interchangeable cogwheel guitar delles. In addition, the gear-driven machine is known: the Fellow 72A machine in which the mechanical kinematic chains are replaced by electrical synchronous links .;

A distinctive feature of the proposed machine is the use of hydraulic torque amplifiers at the output of a stepper electric motor and its correcting, its devices, which are averaged by non-uniformity of motion; The rotor of a stepper motor, as well as through the implementation of a correction determined by the instantaneous mismatch of the kinematic elements from the rotor of the stepper motor to the machine table, increases the accuracy of machining of the product ..

The drawing shows a diagram of the circuit and the chain of the vertical feed of the machine.

The grinding wheel spindle receives rotation from an asynchronous AC motor. A pulse sensor is installed on this spindle. The pulses taken from the sensor go to the electronic guitar divider tuning and are converted to a three-phase voltage in an electronic switch that is; Controls by stepper motor. The engine rotates the spool of the hydraulic booster moment, and the latter - the drive shaft caliper product.

 The electric guitar of the tuner is a three-bit pulse divider with a division register and a bearer.

The number of pulses on the channel revers sv5: z1; determined by the number of closed contacts of the register A. The number of pulses at the output

No. 134965-2 Kaiia,; iy register B is divided by closing the toggle switches of this register. The combination of switching contacts registers A and B makes it possible to get any gear ratios. The number of pulses per output channel of register C is set by closing the toggle switches of this register.

The combination of the inclusion of the contacts of registers B and C allows any transfer ratios to be obtained.

The system of electrical tuning has a certain irregularity of the output signals, conditioned by the sequence of switched on divider bits. To average this irregularity of the input of control pulses from the sensor, as well as the nt table motion uniformity at a low frequency associated with the stepping (oscillatory) movement of the rotor of the stepping motor, a torque amplifier is made at the output of the motor, made as an independent electric or hydraulic tracking system with stiff negative feedback. In this accumulator, the dependence of the angle of rotation of the stepping electric motor and the torque amplifier shaft is nonlinear.

The system used makes it possible to correct the error caused by the inaccuracy of manufacturing the gears of the transmission from the hydraulic motor to the product. For this, sensors are mounted on the table and the output shaft of the hydraulic engine. The signals from the sensors are sent to a comparison counter, issuing signals determined by the instantaneous misalignment of the axes. The signals from the counter control the stepper servo motor SD-2, which turns the stator of the stepper motor SD-1 through a gearbox to the angle corresponding to the required value of co-response.

II redeme and 3 obreteki ki

Gear grinding machine working by rolling with a worm abrasive tool with electric synchronous connection between the grinding wheel spindle, product spindle and feed drive carried out by a pulse sensor and a stepper motor with machine changeover using electronic functional transducers and with a system for correcting mechanical inaccuracies gear, equipped with an electronic counter, characterized in that, in order to improve the accuracy of machining the product, hydraulic Moments of output momentum of a stepper motor, having a non-linear gain, leading to averaging the uneven motion of the rotor of a stepping motor, and a device for adjusting the servo motor with a servo that rotates the stator of the stepping motor the sensors installed on the product port and the output shaft of the hydraulic engine.