CN2190534Y

CN2190534Y - Automatic controller for internal grinder abrasive wheel constant linear speed

Info

Publication number: CN2190534Y
Application number: CN 93239744
Authority: CN
Inventors: 吴加林
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-12-22
Filing date: 1993-12-22
Publication date: 1995-03-01
Anticipated expiration: 2003-12-22

Abstract

The utility model relates to a monitoring and control device for the rotary speed of the grinding wheel of an internal grinder. The monitoring and control device for the rotary speed of the grinding wheel of an internal grinder is composed of an oscillator, a signal transducer, a counter, a frequency multiplier, and a f/v converter, wherein, the output end of the signal transducer is connected with the input end of the counter. The output end of the counter is divided into two paths, one path of the output end of the counter is connected with the input end of the frequency multiplier, and the other path of the output end of the counter and the output end of the frequency multiplier are connected with the input end of the F/V converter in parallel. The signal output end of the oscillator is connected with another input end of the frequency multiplier. The finishing pulse signal of the original internal grinder is transferred to the frequency multiplier. After the finishing pulse signal of the original internal grinder and the basic pulse generated by the oscillator are compared and disposed, the finishing pulse signal of the original internal grinder is converted into a voltage signal to be transported to a motor control circuit to control the rotary speed of a grinding wheel.

Description

Automatic controller for internal grinder abrasive wheel constant linear speed

The utility model relates to a kind of monitor controller of grinding wheel speed of internal grinder.

In bearing is made,, except that requiring the wheel face steady quality, also require it to remain under the constant linear velocity condition and carry out grinding for guaranteeing the crudy of its bearing ring.Along with the carrying out of process, the machined surface of emery wheel is worn and its diameter is diminished gradually, causes its linear velocity to reduce thereupon, thereby makes the crudy of product be difficult to obtain assurance.On the other hand, carry out grinding under low linear velocity situation, also make the working face of emery wheel cause hurt easily, except that crudy that influences product and efficient, the scrappage of emery wheel self is also high.The internal grinder of existing machining bearing lasso is handled its detected corrected impulse signal by truer and PC that grinding machine self is equipped with through PC, the emery wheel working face is repaired.This mode has only been considered the emery wheel working face is repaired, and unresolvedly diminished and this problem of decline of the linear velocity that causes by grinding wheel diameter, so the hurt problem of its crudy and emery wheel self still exists.

The purpose of this utility model is in order to solve the problems referred to above of prior art, for internal grinder provides a kind of internal grinder emery wheel constant linear velocity self-con-tained unit that makes its emery wheel remain on constant linear velocity running.

The purpose of this utility model is that the diameter by the monitoring emery wheel changes the change of line speed cause and follows the tracks of this technical scheme of rotating speed of regulating grinding wheel drive mitor with the linear velocity of this variation and realize.Its formation comprises oscillator, signal transducer, counter, frequency multiplier and F/V converter, wherein, the corrected impulse signal output part of the input of signal transducer and the PC of former internal grinder joins, the input of output and counter joins, the output of counter divides two-way, one the tunnel connects an input of frequency multiplier, the output of another road and frequency multiplier also connects the input of F/V converter, another input of the signal output part of oscillator and frequency multiplier joins, and the output of F/V converter and the circuit for controlling motor of grinding wheel drive mitor join.During work, the pulse signal that oscillator produces is added to frequency multiplier as reference signal, emery wheel corrected signal from former internal grinder is defeated by counter from the corrected impulse interface of its PC by signal transducer, handle the back by rolling counters forward and divide two-way output, one the tunnel is defeated by frequency multiplier, the reference pulse of sending here with oscillator carries out frequency ratio, be defeated by the F/V converter again after the output signal stack of the other end and frequency multiplier and convert frequency signal to voltage signal, utilize the rotating speed of this voltage signal control grinding wheel drive mitor.Increasing of the tailored pulse signal of sending here along with the grinding machine PC, through counter stored count control frequency multiplier, make frequency more and more higher, the also corresponding thereupon increase of rotating speed of motor, thereby realize adjustment, reach the purpose that makes it keep constant linear velocity to turn round grinding wheel speed.

The utility model is handled by the tracking of the change of line speed signal that the change at grinding process medium plain emery wheel diameter to emery wheel causes, the rotating speed of emery wheel is improved along with reducing of its diameter, thereby make emery wheel maintain the optimum working state of constant linear velocity running, to guarantee the crudy of bearing ring, the scrappage that reduction reduces to cause because of grinding speed also makes be prolonged the service life of emery wheel self simultaneously.

Provide embodiment below in conjunction with accompanying drawing.

Fig. 1 is the theory diagram of present embodiment

Fig. 2 is the circuit diagram of present embodiment

Shown in Fig. 1～2, the crushing pulse signal output end of its input and former internal grinder PC joins.Signal transducer is served as by a photoelectrical coupler IC0, and IC0 can select the CH3020 integrated package for use; Oscillator is made up of IC1 and crystal oscillator JZ and peripheral resistance R 4, R2, R3, and its IC1 can select for use CD4060 to be equal to the class integrated package; Counter is made up of IC2, IC3 and peripheral cell C4, D2, R5 etc., and IC2 can select the CD4040 integrated package for use, and IC3 can select the CD40103 integrated package for use, also can select various similar integrated package for use or is made of discrete circuit; Frequency multiplier is made up of IC4 and peripheral cell C5, R6, R8, R9, C6 etc.; IC4 can select the CD4046 integrated package for use or adopt other similar integrated package or discrete component constitutes, and the F/V converter is made of IC5 and peripheral cell C7, D3, R10, D4, C8, R12 etc., and IC5 can select the LM324 integrated package for use.Connecting relation between above-mentioned each element as shown in Figure 2.10 of IC1,11 pin are accepted the frequency signal that crystal oscillator JZ produces during work, export a reference frequency from 14 pin behind the frequency division, insert 14 pin of frequency multiplier IC4.The tailored pulse signal that former grinding machine PC is sent is through photoelectrical coupler IC0 coupling output, after handling from the input of 10 pin of counter IC2 again from corresponding respectively 7,6,10,5,4,12,11,13 pin that are added to IC3 of 2,3,4,5,6,12,13,14 pin, (be that drawing is clear, above-mentioned 8 groups of lines do not draw among the figure).Export by 14,15 pin of IC3 again, be added to 3 pin of frequency multiplier IC4, behind frequency multiplier IC4 raising frequency, export by 4 pin, input to 3 pin of F/V converter IC 5 after simultaneously 1 pin of the IC3 frequency signal of also exporting the 4 pin output of a frequency signal and IC4 superposes, through F/V converter IC 5 frequency signal is converted to voltage signal, be defeated by circuit for controlling motor by its signal output part 4 pin, the control motor speed is realized automatic speed regulation.

Between input 10 pin of coupler signal output part and counter IC2, a gating switch K is set, and the fixed contact A that makes this gating switch connects input 10 pin of counter, normally closed contact B connects the output of coupler, normal opened contact B ' connects simulation corrected impulse signal output part 1 pin of oscillator IC1, press the output that K switch disconnects coupler, 10 pin of 1 pin of IC1 and IC2 are connect, be that the tailored pulse signal changes the simulation generation by oscillator IC1 institute, offer counter IC2 from the output of 1 pin, can finish the above-mentioned course of work in the same old way, make the utility model increase the manual regulatory function of regulating of tool.Gating switch K can select push-button switch for use.

Output at the F/V converter is connected in series a potentiometer W, can regulate its compensation rate.

Claims

1, a kind of internal grinder emery wheel constant linear velocity self-con-tained unit, it is characterized in that described self-con-tained unit comprises oscillator, signal transducer, counter, frequency multiplier and F/V converter, wherein, the tailored pulse signal output part of the input of signal transducer and the PC of former internal grinder joins, the input of output and counter joins, the output of counter divides two-way, one the tunnel connects an input of frequency multiplier, the output of another road and frequency multiplier also connects the input of F/V converter, and the reference pulse signal output of oscillator and another input of frequency multiplier join.

2, internal grinder emery wheel constant linear velocity self-con-tained unit as claimed in claim 1, it is characterized in that being provided with a gating switch between the input of described signal transducer output and counter, the fixed contact of this gating switch connects the input of counter, normally closed selection contact connects the output of signal transducer, and Chang Kaixuan selects the simulation tailored pulse signal output part that contact connects oscillator.

3, internal grinder emery wheel constant linear velocity self-con-tained unit as claimed in claim 1 or 2 is characterized in that described F/V converter output end also is serially connected with a potentiometer.