CN102352889B - Control method for improving angular-displacement accuracy of rotary-table bearing - Google Patents
Control method for improving angular-displacement accuracy of rotary-table bearing Download PDFInfo
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- CN102352889B CN102352889B CN201110176008.XA CN201110176008A CN102352889B CN 102352889 B CN102352889 B CN 102352889B CN 201110176008 A CN201110176008 A CN 201110176008A CN 102352889 B CN102352889 B CN 102352889B
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- blowout patche
- scale groove
- transmission
- type grating
- face
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/58—Raceways; Race rings
- F16C33/581—Raceways; Race rings integral with other parts, e.g. with housings or machine elements such as shafts or gear wheels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C41/00—Other accessories, e.g. devices integrated in the bearing not relating to the bearing function as such
- F16C41/007—Encoders, e.g. parts with a plurality of alternating magnetic poles
Abstract
The invention relates to a control method for improving the angular-displacement accuracy of a rotary-table bearing, wherein the rotary-table bearing (3) comprises an outer ring (3.1), a radial roller (3.2), a shaft ring (3.3), an inner ring (3.4), a connecting bolt (3.5), a holding frame (3.6) and an axial-thrust cylindrical roller (3.7). The shaft ring is provided with a short graduated slot (3.3.1) and a long graduated slot (3.3.2) and is plated with chromium. A supporting seat (1) is processed according to the shape characteristic of the rotary-table bearing (3), two transmission-type grating sensors (4) and a reflection-type grating sensor (2) are installed on the supporting seat, a leading-out wire of each sensor is connected with a conditioning-circuit box (5), the transmission-type grating sensors are used for monitoring the short graduated slot of the shaft ring and performs the action of monitoring the actual deflection quantity of the angular displacement of the shaft ring, and the reflection-type grating sensor is used for monitoring the long graduated slot of the shaft ring and performs the action of a monitoring criteria. The control method is applicable to a rotary table or an index disk for a numerically-controlled machine tool having high requirements for the angular displacement.
Description
Technical field
The invention belongs to technical field of bearings, especially a kind of for improving the control method of turntable bearing angular displacement accuracy.
Background technology
The basic structure of turntable bearing 3 is referring to Fig. 2..
Turntable bearing 3 is made up of outer ring 3.1, radial roller 3.2, blowout patche 3.3, inner ring 3.4, attachment bolt 3.5, retainer 3.6 and axial thrust cylindrical roller 3.7, be equipped with two groups of axial thrust cylindrical rollers 3.7 in the both ends of the surface symmetry of outer ring 3.1 Widths, be equipped with one group of radial roller 3.2 at the internal diameter end face of outer ring 3.1.
Turntable bearing 3 has high precision, high rigidity, high bearing capacity, is applicable on the rotary table of lathe index plate or other precision optical machineries.
If turntable bearing 3 is applied on lathe index plate, because index plate has 360 ° of scales of circumference, therefore require turntable bearing 3 can realize certain rotation angle displacement to ensure to reach the needed scale of index plate the processing accuracy of workpiece.Under normal circumstances, outer ring 3.1 is relatively fixing, and inner ring 3.4 comprises on the endoporus of blowout patche 3.3 being furnished with turbine and worm device, and turbine and worm device connects with servomotor or stepper motor again.Above-mentioned just a kind of concrete transmission process wherein, transmission process may be also the mechanical drive of other form, as belt wheel transmission and gear drive etc.According to above-mentioned transmission process, in the time of servomotor or stepper motor energising work, servomotor or stepper motor drive turbine and worm device, and turbine and worm device drives blowout patche 3.3 rotation angle displacements to realize the needed scale of processing again, and this transmission process is customized for to open loop control mode.
In above-mentioned open loop control mode, the accuracy of blowout patche 3.3 rotation angle displacements in essence:
The one, depend on energising control time of servomotor or stepper motor;
The 2nd, depend on the mechanical transfer efficiency of turbine and worm device.
Open loop control mode is because the energising departure of servomotor or stepper motor and the mechanical transfer error of turbine and worm device will directly have influence on the accuracy of blowout patche 3.3 rotation angle displacements.
How under above-mentioned open loop control mode, by the architecture advances of blowout patche 3.3 and around the auxiliary control mode of blowout patche 3.3 architecture advances, overcome the energising departure of servomotor or stepper motor and the mechanical transfer error of turbine and worm device, to improve the accuracy of turntable bearing angular displacement, relevant report that so far there are no.
Summary of the invention
For addressing the above problem, the invention provides a kind of for improving the control method of turntable bearing angular displacement accuracy, the architecture advances of this control method by blowout patche and around the auxiliary control mode of blowout patche architecture advances, can overcome the mechanical transfer error that energising departure that servomotor or stepper motor produce and turbine and worm device produce, ensure that the rotation angle displacement of blowout patche can reach certain accuracy.
For achieving the above object, the present invention adopts following technical scheme:
For improving a control method for turntable bearing angular displacement accuracy, described turntable shaft is contracted and is contained outer ring, radial roller, blowout patche, inner ring, attachment bolt, retainer and axial thrust cylindrical roller; The outer ring of described turntable bearing is fixed, and is fitted with turbine and worm device in the endoporus of inner ring and blowout patche, and this turbine and worm device connects with servomotor or stepper motor; In the time of servomotor or stepper motor energising work, servomotor or stepper motor drive turbine and worm device, turbine and worm device drives blowout patche to rotate again and produces angular displacement, this transmission process is customized for open loop control mode, this open loop control mode, due to the energising departure of servomotor or stepper motor and the mechanical transfer error of turbine and worm device, has reduced the accuracy of blowout patche rotation angle displacement; Control method of the present invention comprises following two parts content:
The architecture advances of I, blowout patche;
II, around the auxiliary control mode of blowout patche architecture advances;
Architecture advances about blowout patche:
1. do not changing on the basis of blowout patche existing structure, first adding at the external diameter edge of blowout patche noncontact face one circle
Work goes out the short scale groove that n spacing all equates, blowout patche surface of contact refers to the face that blowout patche contacts with inner ring, described in
, and i=described in this formula
, described i only gets the integer before radix point, the outside dimension mm that described D is blowout patche, extend and be made into the long scale groove of benchmark along blowout patche external diameter end face taking arbitrary short scale groove as benchmark and by this short scale groove, make 23 long scale grooves taking the long scale groove of benchmark as benchmark along blowout patche external diameter end face, including the long scale groove of benchmark, form altogether like this 24 long scale grooves at blowout patche external diameter end face, the angle of adjacent with the long scale groove of benchmark left and right two long scale grooves of long scale groove relative datum and blowout patche mid point is respectively 15 °, the angle of all the other every adjacent two long scale grooves and blowout patche mid point is all 15 °, or saying to be often separated by 15 ° on the blowout patche external diameter end face of 360 ° arranges a long scale groove,
2. on blowout patche, process after all short scale grooves and long scale groove again the external diameter end face to blowout patche and short scale groove and carry out chromium plating;
Auxiliary control mode about around blowout patche architecture advances:
3. process supporting seat according to the resemblance of turntable bearing, the bottom of supporting seat is provided with the through hole for fixed supporting seat, the external diameter end face of supporting seat is radially provided with three endoporus for sensor installation along it, described sensor refers to two transmission-type grating sensors and a reflecting light gate sensor, wherein two described endoporus balanced configurations and its central axis are concordant with blowout patche noncontact face for two transmission-type grating sensors are installed respectively, described in another, external diameter end face and this endoporus of the central axis of endoporus sensing blowout patche are used for installing reflecting light gate sensor, the described endoporus of two transmission-type grating sensors is installed on same central axis, the described endoporus central axis that two transmission-type grating sensors are installed is parallel to each other with the described endoporus central axis that reflecting light gate sensor is installed,
4. a modulate circuit box is set, and this modulate circuit box contains A/D converter, signal digital processor DSP and D/A converter;
5. when turntable bearing is in lathe casing when installation in position, on turntable bearing, put the supporting seat that installs two transmission-type grating sensors and reflecting light gate sensor, the described through hole of supporting seat is in position by supporting seat by bolt, whether two transmission-type grating sensors of rear attention in position and reflecting light gate sensor and the short scale groove of blowout patche and long scale groove are in contact with one another phenomenon, if having contact phenomena should adjust transmission-type grating sensor or the installation site of reflecting light gate sensor is not until come in contact phenomenon; The extension line of two transmission-type grating sensors and reflecting light gate sensor is connected on the A/D converter of modulate circuit box, two transmission-type grating sensors are for monitoring the short scale groove of blowout patche and playing the actual deflection amount of monitoring blowout patche angular displacement, and reflecting light gate sensor is for monitoring the long scale groove of blowout patche and playing monitoring criteria effect;
In the time of servomotor or stepper motor work, inner ring and blowout patche rotate with turbine and worm device simultaneously and angular displacement occur, now two transmission-type grating sensors and reflecting light gate sensor are summarised in the blowout patche angular displacement signal monitoring on the A/D converter of modulate circuit box, A/D converter feeds back to electronics after-treatment system CNC by described angular displacement signal by signal digital processor DSP and D/A converter again, electronics after-treatment system CNC is transferred to servomotor or stepper motor and then adjustment by the analog control signal of correction after by data processing again or improves the accuracy of turntable bearing angular displacement.
Owing to adopting technical scheme described above, the present invention has following superiority:
1, the blowout patche external diameter end face of turntable bearing adopts chromium plating mode, makes blowout patche have good wearing quality and thermotolerance, especially transmission-type grating sensor is being set and reflecting light gate sensor lower shaft circle has very strong reflecting power and antirust ability.
2, the short scale groove arranging on blowout patche and long scale groove are because chromium plating makes its printing opacity more, noncontact face without short scale groove place is light tight, be convenient to the monitoring of transmission-type grating sensor, long scale groove that simultaneously blowout patche external diameter end face arranges alternate 15 ° as a reference mark, thereby make reflecting light gate sensor by reference mark fast monitored acquisition absolute reference.
3, the short scale groove of two transmission-type grating Sensor monitoring blowout patches, plays blowout patche angular displacement or the effect of refinement scale of measuring; Reflective gratings Sensor monitoring benchmark also plays the effect of finding benchmark accurately; Effective application of transmission-type grating sensor and reflecting light gate sensor has not only changed the systematic error that loaded down with trivial details physical construction causes, and have the advantages that measuring accuracy is high, antijamming capability is strong, simple in structure, be the good selection to the fine measurement of turntable bearing angular displacement.
4, supporting seat has good transient equilibrium control characteristic after fixing.
5, the gauge head of transmission-type grating sensor and reflecting light gate sensor can not have any contact phenomena with blowout patche, realizes without friction and installing, to extend the serviceable life of transmission-type grating sensor and reflecting light gate sensor.
6, short scale groove and long scale groove are set on blowout patche can realize the high-precision densification of turntable bearing, thereby reduce the Costco Wholesale of lathe.
7, the present invention easily installs, and sensor is convenient to adjust.
8, the present invention is specially adapted to diagonal displacement has on the numerically-controlled machine of high-accuracy requirement or the rotary table of other precision optical machinery or index plate.
Brief description of the drawings
Fig. 1 is control method schematic diagram of the present invention.
Fig. 2 is the structural representation of turntable bearing.
Fig. 3 is the improvement structural representation of blowout patche.
In above-mentioned figure: 1-supporting seat; 2-reflecting light gate sensor; 3-turntable bearing; 3.1-outer ring; 3.2-radial roller; 3.3-blowout patche; 3.3.1-short scale groove; 3.3.2-long scale groove; 3.4-inner ring; 3.5-attachment bolt; 3.6-retainer; 3.7-axial thrust cylindrical roller; 4-transmission-type grating sensor; 5-modulate circuit box.
Embodiment
In conjunction with Fig. 2, the present invention is for improving the control method of turntable bearing angular displacement accuracy, and described turntable bearing 3 includes outer ring 3.1, radial roller 3.2, blowout patche 3.3, inner ring 3.4, attachment bolt 3.5, retainer 3.6 and axial thrust cylindrical roller 3.7.
The outer ring 3.1 of described turntable bearing 3 is fixing, in the endoporus of inner ring 3.4 and blowout patche 3.3, is fitted with turbine and worm device, and this turbine and worm device connects with servomotor or stepper motor.In the time of servomotor or stepper motor energising work, servomotor or stepper motor drive turbine and worm device, turbine and worm device drives blowout patche 3.3 to rotate again and produces angular displacement, this transmission process is customized for open loop control mode, this open loop control mode is due to the energising departure of servomotor or stepper motor and the mechanical transfer error of turbine and worm device, reduced the accuracy of blowout patche rotation angle displacement, the reduction of blowout patche rotation angle displacement accuracy directly affects the accuracy of turntable bearing angular displacement.
Above-mentioned just a kind of concrete driving coupling mode wherein, driving coupling mode may be also the mechanical drive of other form, as belt wheel transmission and gear drive etc.No matter which kind of driving coupling mode can have influence on the accuracy of blowout patche rotation angle displacement, the present invention studies emphatically the architecture advances of blowout patche on turntable bearing and the auxiliary control mode around blowout patche architecture advances, thereby ensures that to offset or to overcome the mechanical transfer error that above-mentioned driving coupling mode produced the rotation angle displacement of blowout patche can reach certain accuracy.
Control method of the present invention comprises following two parts content:
The architecture advances of I, blowout patche 3.3;
II, around the auxiliary control mode of blowout patche architecture advances;
Architecture advances about blowout patche:
1. in conjunction with Fig. 3, do not changing on the basis of blowout patche 3.3 existing structures, first processing n spacing at the external diameter edge of blowout patche noncontact face one circle and all equate short scale groove 3.3.1, blowout patche surface of contact refers to the face that blowout patche 3.3 contacts with inner ring 3.4, described in
, and i=described in this formula
, described i only gets the integer before radix point, the outside dimension mm that described D is blowout patche.If the outside dimension D=560mm of blowout patche is total
individual short scale groove, often the spacing between adjacent short scale groove equates, or says that the angle of relative blowout patche mid point between every adjacent short scale groove equates, short scale groove can process by laser or alternate manner.
Extend and be made into the long scale groove of benchmark along blowout patche external diameter end face taking arbitrary short scale groove as benchmark and by this short scale groove, make 23 long scale grooves taking the long scale groove of benchmark as benchmark along blowout patche external diameter end face, including the long scale groove of benchmark, form altogether like this 24 long scale groove 3.3.2 at blowout patche external diameter end face, the angle of adjacent with the long scale groove of benchmark left and right two long scale grooves of long scale groove relative datum and blowout patche mid point is respectively 15 °, the angle of all the other every adjacent two long scale grooves and blowout patche mid point is all 15 °, or saying to be often separated by 15 ° on the blowout patche external diameter end face of 360 ° arranges a long scale groove.
Can find out by above-mentioned: short scale groove 3.3.1 is along with the sum that varying in size of blowout patche 3.3 outside dimensions arranges is all different, 24 of the sums that long scale groove 3.3.2 arranges are constant, must be to extend and make along blowout patche external diameter end face with arbitrary short scale groove as long as meet the long scale groove of benchmark, long scale groove 3.3.2 also can process by laser or alternate manner, the length of long scale groove 3.3.2 or equal the width of blowout patche external diameter end face, or equal 2/3 of blowout patche external diameter end face width, 3.3.2 is shorter for the relatively long scale groove of short scale groove 3.3.1, be similar to the minute hand length scale of clock and watch.The width of short scale groove 3.3.1 and long scale groove 3.3.2 equates, the width of short scale groove 3.3.1 and long scale groove 3.3.2 is not restricted.
2. on blowout patche 3.3, process after all short scale groove 3.3.1 and long scale groove 3.3.2 the external diameter end face to blowout patche and short scale groove again and carry out chromium plating, the external diameter end face chromium plating of blowout patche also comprises long scale groove 3.3.2 certainly.Although the chromium plating conventional technological means that is this area, but the object of the invention is wearing quality and thermotolerance in order to improve blowout patche external diameter end face, especially strengthen reflecting power and the antirust ability of blowout patche external diameter end face, provide reliable preparation for implementing described auxiliary control mode, the blowout patche external diameter after chromium plating should meet the dimensional requirement of design code.
In summary it can be seen:
Short scale groove and long scale groove are set on blowout patche and can realize the high-precision densification of turntable bearing, thereby reduce the Costco Wholesale of lathe.
The short scale groove 3.3.1 arranging on blowout patche 3.3 and long scale groove 3.3.2 are because chromium plating makes its printing opacity more, noncontact face without short scale groove place is light tight, be convenient to the monitoring of transmission-type grating sensor 4, long scale groove that simultaneously blowout patche external diameter end face arranges alternate 15 ° as a datum line mark, thereby make reflecting light gate sensor 2 obtain fast absolute base on schedule by datum line mark.
The blowout patche external diameter end face of turntable bearing 3 adopts chromium plating mode, makes blowout patche 3.3 have good wearing quality and thermotolerance, especially has very strong reflecting power and antirust ability 2 times blowout patches 3.3 of transmission-type grating sensor 4 and reflecting light gate sensor are set.
In conjunction with Fig. 1, the auxiliary control mode about around blowout patche architecture advances:
3. process supporting seat according to the resemblance of turntable bearing 3, the bottom of supporting seat 1 is provided with the through hole for fixed supporting seat, the external diameter end face of supporting seat 1 is radially provided with three endoporus for sensor installation along it, described sensor refers to two transmission-type grating sensors 4 and a reflecting light gate sensor 2, wherein two described endoporus balanced configurations and its central axis are concordant with blowout patche noncontact face for two transmission-type grating sensors 4 are installed respectively, described in another, external diameter end face and this endoporus of the central axis of endoporus sensing blowout patche are used for installing reflecting light gate sensor 2, the described endoporus of two transmission-type grating sensors 4 is installed on same central axis, the described endoporus central axis that two transmission-type grating sensors 4 are installed is parallel to each other with the described endoporus central axis that reflecting light gate sensor 2 is installed.Notice that the transmission-type grating sensor shown in Fig. 1 dotted line is also for being in symmetric position with the transmission-type grating sensor shown in solid line, but this does not represent that two transmission-type grating sensors 4 are balanced configurations, the transmission-type grating sensor shown in Fig. 1 dotted line just shows and exists.After supporting seat is fixing, there is good transient equilibrium control characteristic.
Two transmission-type grating sensors 4 are monitored the short scale groove 3.3.1 of blowout patche 3.3, play blowout patche 3.3 angular displacements or the effect of refinement scale of measuring.Reflecting light gate sensor 2 monitoring criteria lines, work to find accurately reference point.. effective application of transmission-type grating sensor 4 and reflecting light gate sensor 4 has not only changed the systematic error that loaded down with trivial details physical construction causes, and have the advantages that measuring accuracy is high, antijamming capability is strong, simple in structure, be the good selection to the fine measurement of turntable bearing angular displacement.
4. a modulate circuit box is set, and this modulate circuit box contains A/D converter, signal digital processor DSP and D/A converter.
5. when turntable bearing 3 is in lathe casing when installation in position, on turntable bearing 3, put the supporting seat 1 that installs two transmission-type grating sensors 4 and reflecting light gate sensor 2, the described through hole of supporting seat 1 is in position by supporting seat by bolt, whether two transmission-type grating sensors 4 of rear attention in position and reflecting light gate sensor 2 are in contact with one another phenomenon with the short scale groove of blowout patche 3.3 3.3.1 and long scale groove 3.3.2, if have contact phenomena should adjust transmission-type grating sensor 4 or the installation site of reflecting light gate sensor 2 is not until come in contact phenomenon..
The extension line of two transmission-type grating sensors 4 and reflecting light gate sensor 2 is connected on the A/D converter of modulate circuit box 5, two transmission-type grating sensors 4 are for monitoring the short scale groove 3.3.1 of blowout patche 3.3 and playing the actual deflection amount of monitoring blowout patche angular displacement, and reflecting light gate sensor 2 is for monitoring the long scale groove 3.3.2 of blowout patche 3.3 and playing monitoring criteria effect.The gauge head of noting transmission-type grating sensor 4 and reflecting light gate sensor 2 can not have any contact phenomena with blowout patche 3.3, realizes without friction and installing, to extend the serviceable life of transmission-type grating sensor 4 and reflecting light gate sensor 2.
In the time of servomotor or stepper motor work, inner ring 3.4 and blowout patche 3.3 rotates with turbine and worm device simultaneously and angular displacement occurs, now two transmission-type grating sensors 4 and reflecting light gate sensor 2 are summarised in the blowout patche monitoring 3.3 angular displacement signals on the A/D converter of modulate circuit box 5, A/D converter feeds back to electronics after-treatment system CNC by described angular displacement signal by signal digital processor DSP and D/A converter again, electronics after-treatment system CNC is transferred to servomotor or stepper motor by the analog control signal of correction after by data processing again and then improves the accuracy of turntable bearing angular displacement.
Relatively self-defining open loop control mode, 1. of the present invention-to be 5. just equivalent to a self-defined close-loop control mode, close-loop control mode can solve the drawback of open loop control mode, reduce the scrambler of servomotor in open loop control mode, reduce machine tooling cost, improve the accuracy of turntable bearing angular displacement.
The present invention easily installs, and described sensor is convenient to adjust, and being specially adapted to diagonal displacement has on the numerically-controlled machine of high-accuracy requirement or the rotary table of other precision optical machinery or index plate.
Claims (1)
1. for improving a control method for turntable bearing angular displacement accuracy, described turntable bearing (3) includes outer ring (3.1), radial roller (3.2), blowout patche (3.3), inner ring (3.4), attachment bolt (3.5), retainer (3.6) and axial thrust cylindrical roller (3.7); The outer ring (3.1) of described turntable bearing (3) is fixing, in the endoporus of inner ring (3.4) and blowout patche (3.3), is fitted with turbine and worm device, and this turbine and worm device connects with servomotor or stepper motor; In the time of servomotor or stepper motor energising work, servomotor or stepper motor drive turbine and worm device, turbine and worm device drives blowout patche (3.3) to rotate again and produces angular displacement, this transmission process is customized for open loop control mode, this open loop control mode, due to the energising departure of servomotor or stepper motor and the mechanical transfer error of turbine and worm device, has reduced the accuracy of blowout patche rotation angle displacement; It is characterized in that: described control method comprises following two parts content:
The architecture advances of I, blowout patche (3.3);
II, around the auxiliary control mode of blowout patche (3.3) architecture advances;
Architecture advances about blowout patche (3.3):
1. do not changing on the basis of blowout patche (3.3) existing structure, first processing at the external diameter edge of blowout patche noncontact face one circle the short scale groove (3.3.1) that n spacing all equates, blowout patche surface of contact refers to the face that blowout patche contacts with inner ring, described in
, and i=described in this formula
, described i only gets the integer before radix point, and described D is the outside dimension mm of blowout patche (3.3); Extend and be made into the long scale groove of benchmark along blowout patche external diameter end face taking arbitrary short scale groove as benchmark and by this short scale groove, make 23 long scale grooves taking the long scale groove of benchmark as benchmark along blowout patche external diameter end face, including the long scale groove of benchmark, form altogether 24 long scale grooves (3.3.2) at blowout patche external diameter end face like this, the angle of adjacent with the long scale groove of benchmark left and right two long scale grooves of long scale groove relative datum and blowout patche mid point is respectively 15 °, and the angle of all the other every adjacent two long scale grooves and blowout patche mid point is all
15 °, or say on the blowout patche external diameter end face of 360 ° and be often separated by 15 ° a long scale groove (3.3.2) is set;
2. on blowout patche (3.3), process after all short scale grooves (3.3.1) and long scale groove (3.3.2) again the external diameter end face to blowout patche and short scale groove and carry out chromium plating;
Auxiliary control mode about around blowout patche (3.3) architecture advances:
3. process supporting seat (1) according to the resemblance of turntable bearing (3), the bottom of supporting seat (1) is provided with the through hole for fixed supporting seat, the external diameter end face of supporting seat (1) is radially provided with three endoporus for sensor installation along it, described sensor refers to two transmission-type grating sensors (4) and a reflecting light gate sensor (2), wherein two described endoporus balanced configurations and its central axis are concordant with blowout patche noncontact face for two transmission-type grating sensors (4) are installed respectively, described in another, external diameter end face and this endoporus of the central axis of endoporus sensing blowout patche are used for installing reflecting light gate sensor (2), the described endoporus of two transmission-type grating sensors (4) is installed on same central axis, the described endoporus central axis that two transmission-type grating sensors (4) are installed is parallel to each other with the described endoporus central axis that reflective gratings sensing (2) device is installed,
A modulate circuit box (5) is 4. set, and this modulate circuit box contains A/D converter, signal digital processor DSP and D/A converter;
5. when turntable bearing (3) is in lathe casing when installation in position, on turntable bearing (3), put the supporting seat (1) that installs two transmission-type grating sensors (4) and reflecting light gate sensor (2), the described through hole of supporting seat (1) is in position by supporting seat by bolt, whether two transmission-type grating sensors of rear attention in position (4) and reflecting light gate sensor (2) are in contact with one another phenomenon with the short scale groove of blowout patche (3.3) (3.3.1) and long scale groove (3.3.2), if have contact phenomena should adjust transmission-type grating sensor (4) or the installation site of reflecting light gate sensor (2) is not until come in contact phenomenon, the extension line of two transmission-type grating sensors (4) and reflecting light gate sensor (2) is connected on the A/D converter of modulate circuit box (5), two transmission-type grating sensors (4) are for monitoring the short scale groove (3.3.1) of blowout patche (3.3) and playing the actual deflection amount of monitoring blowout patche angular displacement, and reflecting light gate sensor (2) is for monitoring the long scale groove (3.3.2) of blowout patche (3.3) and playing monitoring criteria effect,
In the time of servomotor or stepper motor work, inner ring (3.4) and blowout patche (3.3) rotate with turbine and worm device simultaneously and angular displacement occur, now two transmission-type grating sensors (4) and reflecting light gate sensor (2) are summarised in the blowout patche monitoring (3.3) angular displacement signal on the A/D converter of modulate circuit box (5), A/D converter feeds back to electronics after-treatment system CNC by described angular displacement signal by signal digital processor DSP and D/A converter again, electronics after-treatment system CNC is transferred to servomotor or stepper motor and then adjustment by the analog control signal of correction after by data processing again or improves the accuracy of turntable bearing (3) angular displacement.
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| CN201110176008.XA CN102352889B (en) | 2011-06-28 | 2011-06-28 | Control method for improving angular-displacement accuracy of rotary-table bearing |
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| CN201110176008.XA CN102352889B (en) | 2011-06-28 | 2011-06-28 | Control method for improving angular-displacement accuracy of rotary-table bearing |
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| CN106142137B (en) * | 2015-07-31 | 2018-06-22 | 宁夏巨能机器人系统有限公司 | A kind of articulated robot self-checking device and calibration method |
| CN108917684A (en) * | 2018-03-13 | 2018-11-30 | 浙江迪邦达轴承有限公司 | A kind of cross-section thin-wall bearing measuring device and measuring method |
| CN110332290A (en) * | 2019-07-17 | 2019-10-15 | 陕西天鼎无线技术股份有限公司 | A kind of mute turntable of high speed continuously adjustable |
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| CN102338165A (en) * | 2011-06-28 | 2012-02-01 | 洛阳轴研科技股份有限公司 | Reflection type control method for monitoring angular displacement of turnable bearing |
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| DE4103151A1 (en) * | 1991-02-02 | 1992-08-13 | Hoesch Ag | Open-centred large roller bearing, e.g. for offshore platform crane - has ring measurement test head mounted in roller body space with cables fed between rings |
| JPH0942994A (en) * | 1995-07-28 | 1997-02-14 | Ntn Corp | Revolution bearing with revolution angle detector |
| DE19640895B4 (en) * | 1996-10-04 | 2007-07-12 | Schaeffler Kg | Rolling bearing with an integrated speed measuring device |
| DE102008013377A1 (en) * | 2008-03-10 | 2009-09-17 | Dr. Johannes Heidenhain Gmbh | Angle measuring system and method for producing an angle measuring system |
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| CN102338165A (en) * | 2011-06-28 | 2012-02-01 | 洛阳轴研科技股份有限公司 | Reflection type control method for monitoring angular displacement of turnable bearing |
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