Roundss News
- Changchun Rongde Optics
- Co.,Ltd.
- Add：No.1666 Yaan Road,
- North Lake Development District,
- Changchun 130102,China
- Tel：86-431-81881745
- Fax：86-0431-85256892
- E-mail：rongdecui@roundss.net
- Skype：adacui_roundss
Company News
Current position ：Home > News > Photoelectric Sense
Spindle encoder principle！
Changchun Rongde Optics Co.,Ltd. Release time：2016/8/27 Browse：706Spindle encoder principle
As shown, the drain disc, engraved with twice the circumferential stripes, the outer circumferential aliquot line, for example: 1024, used as a transmission pulse, only an inner ring. On the light bar is engraved with the translucent stripes A, the distance between the B, C, A and B should ensure that when the drain stripe A stripe disc took a coincidence, striped B should coincide with the leak of another disc stripes dislocation 1/4 cycle. Stripe behind each light bar were placed in a phototransistor constituting one output channel.
Schematic spindle encoder
→ After a light source into a parallel light condenser condenser drain → → rotating disc and spindle synchronization stripe stripes and light bar on the drain on the disc coincide and dislocation → photosensitive receiver signal is present and by counting means counting → reflect spindle speed.
Scattered light source emits after condenser condensing into parallel light, when the drain disc spindle synchronized rotation, due stripe stripes and light bar drain on the disk appeared on the overlap and dislocation, the photosensitive tube by bright light, dark changes causing internal photodiode current size changes, changes in the signal amplification circuit output current is rectified rectangular pulse. A drain due stripe stripes disc coincides with another fringe dislocation stripes B 1/4 cycle, so A, B two-channel output waveform phase also shifted by 1/4 cycle.
Spindle encoder pulse when coincidence output C fringe on a score line of the inner disc and light leakage field synchronization (start, also known as zero) pulse. Using a synchronization pulse, CNC lathe machining control can be achieved, but also as a signal to stop the spindle quasi quasi-stop device. When CNC lathe threading, use the sync pulse as a turning point into a control signal and retract knife point, to ensure that the threading will not mess buckle.
As shown, the drain disc, engraved with twice the circumferential stripes, the outer circumferential aliquot line, for example: 1024, used as a transmission pulse, only an inner ring. On the light bar is engraved with the translucent stripes A, the distance between the B, C, A and B should ensure that when the drain stripe A stripe disc took a coincidence, striped B should coincide with the leak of another disc stripes dislocation 1/4 cycle. Stripe behind each light bar were placed in a phototransistor constituting one output channel.
Schematic spindle encoder
→ After a light source into a parallel light condenser condenser drain → → rotating disc and spindle synchronization stripe stripes and light bar on the drain on the disc coincide and dislocation → photosensitive receiver signal is present and by counting means counting → reflect spindle speed.
Scattered light source emits after condenser condensing into parallel light, when the drain disc spindle synchronized rotation, due stripe stripes and light bar drain on the disk appeared on the overlap and dislocation, the photosensitive tube by bright light, dark changes causing internal photodiode current size changes, changes in the signal amplification circuit output current is rectified rectangular pulse. A drain due stripe stripes disc coincides with another fringe dislocation stripes B 1/4 cycle, so A, B two-channel output waveform phase also shifted by 1/4 cycle.
Spindle encoder pulse when coincidence output C fringe on a score line of the inner disc and light leakage field synchronization (start, also known as zero) pulse. Using a synchronization pulse, CNC lathe machining control can be achieved, but also as a signal to stop the spindle quasi quasi-stop device. When CNC lathe threading, use the sync pulse as a turning point into a control signal and retract knife point, to ensure that the threading will not mess buckle.
Previous：Encoder coupling Next：Spindle encoder
Products