CN102352889A - 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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- CN102352889A CN102352889A CN201110176008XA CN201110176008A CN102352889A CN 102352889 A CN102352889 A CN 102352889A CN 201110176008X A CN201110176008X A CN 201110176008XA CN 201110176008 A CN201110176008 A CN 201110176008A CN 102352889 A CN102352889 A CN 102352889A
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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
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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
- 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
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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 controlling method that is used to improve turntable bearing angular displacement degree of accuracy.
Background technique
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 end thrust cylindrical roller 3.7; The both ends of the surface symmetry of 3.1 width directions is equipped with two groups of end thrust cylindrical rollers 3.7 in the outer ring, and 3.1 internal diameter end face is equipped with one group of radial roller 3.2 in the outer ring.
Turntable bearing 3 has highi degree of accuracy, high rigidity, high bearing capacity, is applicable on the revolving table of lathe index plate or other precision optical machineries.
Turntable bearing 3 is if be applied on the lathe index plate, because index plate has 360 ° of scales of circumference, therefore requires turntable bearing 3 can realize that certain angle of rotation displacement is to reach the processing accuracy that the needed scale of index plate guarantees workpiece.Generally, with outer ring 3.1 relative fixed, inner ring 3.4 comprises on the endoporus of blowout patche 3.3 being furnished with the turbine and worm device, and the turbine and worm device connects with actuating motor or stepper motor again.Above-mentioned just wherein a kind of concrete transmission process, transmission process also possibly be the mechanical transmission of other form, like belt wheel transmission and gear transmission etc.According to above-mentioned transmission process; When actuating motor or stepper motor energising work; Actuating motor or step motor drive turbine and worm device, turbine and worm device drive blowout patche 3.3 angle of rotation displacements again to realize the needed scale of processing, and this transmission process is customized for open loop control mode.
In the above-mentioned open loop control mode, the degree of accuracy of blowout patche 3.3 angle of rotation displacements in essence:
The one, depend on energising control time of actuating motor or stepper motor;
The 2nd, depend on the mechanical transmission efficient of turbine and worm device.
Open loop control mode is because the mechanical transmission error of the energising departure of actuating motor or stepper motor and turbine and worm device will directly have influence on the degree of accuracy of blowout patche 3.3 angle of rotation displacements.
How under above-mentioned open loop control mode; Through the architecture advances of blowout patche 3.3 and the assist control mode that centers on blowout patche 3.3 architecture advances; Overcome the energising departure of actuating motor or stepper motor and the mechanical transmission error of turbine and worm device; To improve the degree of accuracy of turntable bearing angular displacement, do not see relevant report so far.
Summary of the invention
For addressing the above problem; The invention provides a kind of controlling method that is used to improve turntable bearing angular displacement degree of accuracy; This controlling method is through to the architecture advances of blowout patche and around the assist control mode of blowout patche architecture advances; Can overcome the mechanical transmission error that energising departure that actuating motor or stepper motor produce and turbine and worm device are produced, guarantee that the angle of rotation displacement of blowout patche can reach certain degree of accuracy.
For realizing the foregoing invention purpose, the present invention adopts following technological scheme:
A kind of controlling method that is used to improve turntable bearing angular displacement degree of accuracy, said turntable shaft are contracted and are contained outer ring, radial roller, blowout patche, inner ring, attachment bolt, retainer and end thrust cylindrical roller; The outer ring of said turntable bearing is fixed, and in the endoporus of inner ring and blowout patche, is fitted with the turbine and worm device, and this turbine and worm device connects with actuating motor or stepper motor; When actuating motor or stepper motor energising work; Actuating motor or step motor drive turbine and worm device; The turbine and worm device drives the blowout patche rotation again and produces angular displacement; This transmission process is customized for open loop control mode; This open loop control mode is because actuating motor or the energising departure of stepper motor and the mechanical transmission error of turbine and worm device have reduced the degree of accuracy of blowout patche angle of rotation displacement; Controlling method of the present invention comprises following two-part content:
The architecture advances of I, blowout patche;
II, around the assist control mode of blowout patche architecture advances;
Architecture advances about blowout patche:
1. on the basis that does not change the blowout patche existing structure, one circle adds at the external diameter edge of blowout patche non-contact face earlier
Work out n are equal short distance scale trough, shaft ring shaft ring contact surface is in contact with the inner surface, and the? ?
, and the formula described in i =
, i just take the integer before the decimal point, said D axis circle diameter size mm; in either a short-scale trough basis and this short scale slot extending along the shaft end diameter circle made into a reference length scale trough to trough as the base reference length scale along the outer end face of the shaft ring produced 23 long scale trough, so circle diameter of the shaft end face including the reference length scale trough including a total of 24 long-scale trough formed, and the reference length scale trough around two adjacent grooves relative to the benchmark long scale length scale trough and shaft Circle the midpoint of each angle 15 °, the remaining length scale every two adjacent ring groove and the shaft angle between the midpoint of the same 15 °, or that in a 360 ° circle diameter shaft end face each separated by 15 ° set up a long-scale trough;
2. after processing all short scale grooves and long scale groove on the blowout patche again to the external diameter end face of blowout patche with lack the scale groove and carry out chromium plating;
About centering on the assist control mode of blowout patche architecture advances:
3. the resemblance according to the turntable bearing processes supporting seat; The bottom of supporting seat is provided with the through hole that is used for fixing supporting seat; The external diameter end face of supporting seat radially is provided with three endoporus that are used for sensor installation along it; Said sensor is meant two transmission-type grating sensors and a reflecting light gate sensor; Wherein two said endoporus balanced configurations and its central axis are concordant with blowout patche noncontact face is used for installing respectively two transmission-type grating sensors; External diameter end face and this endoporus that the central axis of another said endoporus points to blowout patche are used to install the reflecting light gate sensor; The said endoporus that two transmission-type grating sensors are installed is on same central axis, and the said endoporus central axis that two transmission-type grating sensors are installed then is parallel to each other with the said endoporus central axis that the reflecting light gate sensor is installed;
4. a conditioning circuit box is set, and this conditioning circuit box contains A/D converter, signal digital processor DSP and D/A converter;
5. when the turntable bearing in the lathe casing during installation in position; On the turntable bearing, put the supporting base that installs two transmission-type grating sensors and reflecting light gate sensor; The said through hole of supporting base passes through bolt with the supporting base fix in position; Notice behind the fix in position whether two transmission-type grating sensors and reflecting light gate sensor and short scale groove of blowout patche and long scale groove are in contact with one another phenomenon, as if having contact phenomena then should adjust the transmission-type grating sensor or the mounting point of reflecting light gate sensor is not till coming in contact phenomenon; The lighting outlet of two transmission-type grating sensors and reflecting light gate sensor is connected on the A/D converter of conditioning circuit box; Two transmission-type grating sensors are used to monitor the short scale groove of blowout patche and play the actual deflection amount of monitoring the blowout patche angular displacement, and the reflecting light gate sensor is used to monitor the long scale groove of blowout patche and play the monitoring criteria effect;
When servomotor or stepper motor work; Inner ring and blowout patche rotate with the turbine and worm device simultaneously and angular displacement take place; This moment, two transmission-type grating sensors and reflecting light gate sensor were summarised in the blowout patche angular displacement signal that monitors on the A/D converter of modulate circuit box; A/D converter feeds back to electronics after-treatment system CNC with said angular displacement signal by signal digital processor DSP and D/A converter again, and electronics after-treatment system CNC is transferred to servomotor or stepper motor and then adjustment again with the analog control signal of revising after by data or improves the degree of accuracy of turntable bearing angular displacement.
Owing to adopt technological scheme as stated, the present invention has following superiority:
1, the blowout patche external diameter end face of turntable bearing adopts the chromium plating mode, makes blowout patche have good wear resistance and heat resistance, especially the transmission-type grating sensor is being set and reflecting light gate sensor lower shaft circle has very strong reflecting power and antirust ability.
2, short scale groove that is provided with on the blowout patche and long scale groove are because chromium plating makes its printing opacity more; The non-contact face that does not have short scale groove place is then light tight; Be convenient to the monitoring of transmission-type grating sensor; Simultaneously the long scale groove that is provided with of blowout patche external diameter end face alternate 15 ° as a fiducial marks, thereby make the reflecting light gate sensor through fiducial marks fast monitored acquisition absolute standard.
3, the short scale groove of two transmission-type grating sensor monitors blowout patches plays the blowout patche angular displacement or the effect of refinement scale of measuring; Reflective gratings sensor monitors 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 loaded down with trivial details systematic error that mechanical structure caused; And have measuring accuracy height, strong, the characteristic of simple structure of antijamming capability, be good selection to the fine measurement of turntable bearing angular displacement.
4, supporting base has good dynamic balancing 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 not having friction and installs, to prolong the working life of transmission-type grating sensor and reflecting light gate sensor.
6, high-accuracyization that short scale groove and long scale groove can be realized the turntable bearing is set on blowout patche, thereby reduces the Costco Wholesale of lathe.
7, easy mounting of the present invention, sensor are convenient to adjustment.
8, the present invention is specially adapted to diagonal displacement has on the revolving table or index plate of numerical control machine tool or other precision optical machinery of high-accuracy requirement.
Description of drawings
Fig. 1 is a controlling method schematic representation of the present invention.
Fig. 2 is the structural representation of turntable bearing.
Fig. 3 is the improvement structural representation of blowout patche.
Among the above-mentioned figure: the 1-supporting base; 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-end thrust cylindrical roller; 4-transmission-type grating sensor; 5-conditioning circuit box.
Embodiment
In conjunction with Fig. 2, the present invention is used to improve the controlling method of turntable bearing angular displacement degree of accuracy, and said 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 end thrust cylindrical roller 3.7.
The outer ring 3.1 of said turntable bearing 3 is fixing, in the endoporus of inner ring 3.4 and blowout patche 3.3, is fitted with the turbine and worm device, and this turbine and worm device connects with actuating motor or stepper motor.When actuating motor or stepper motor energising work; Actuating motor or step motor drive turbine and worm device; The turbine and worm device drives blowout patche 3.3 rotations again and produces angular displacement; This transmission process is customized for open loop control mode; This open loop control mode is because actuating motor or the energising departure of stepper motor and the mechanical transmission error of turbine and worm device; Reduced the degree of accuracy of blowout patche angle of rotation displacement, the reduction of blowout patche angle of rotation displacement accuracy directly influences the degree of accuracy of turntable bearing angular displacement.
Above-mentioned just wherein a kind of concrete transmission joint mode, the transmission joint mode also possibly be the mechanical transmission of other form, like belt wheel transmission and gear transmission etc.No matter which kind of transmission joint mode can both have influence on the degree of accuracy of blowout patche angle of rotation displacement; The present invention studies the architecture advances of blowout patche on the turntable bearing emphatically and around the assist control mode of blowout patche architecture advances, thereby guarantees that to offset or to overcome the mechanical transmission error that above-mentioned transmission joint mode produced the angle of rotation displacement of blowout patche can reach certain degree of accuracy.
Controlling method of the present invention comprises following two-part content:
The architecture advances of I, blowout patche 3.3;
II, around the assist control mode of blowout patche architecture advances;
Architecture advances about blowout patche:
① with Figure 3, without changing the shaft ring 3.3 on the basis of the existing structure, the first non-contact surface of the shaft of the outer ring around the edge of the processing of the n-scale short-pitch grooves 3.3.1 are equal, the contact surface is a ring axis refers to the axis of the inner ring 3.3 and 3.4 contact surface, and the
, and the formula described in i =
, i just take the integer before the decimal point, the axis of the ring outside diameter D mm.If the outer diameter shaft ring D = 560mm, then the total
a short scale slots, each slot adjacent to the short distance between the scale are equal, or that short scale slot between each adjacent ring relative to the shaft midpoint clip angles are equal, short scale grooves may be processed by the laser or other means.
Be benchmark and should lack the scale groove and be made into the long scale groove of benchmark with arbitrary short scale groove along blowout patche external diameter end face prolongation; With the long scale groove of benchmark is that benchmark is made 23 long scale grooves along blowout patche external diameter end face; Comprise that at blowout patche external diameter end face the long scale groove of benchmark forms 24 long scale groove 3.3.2 altogether like this; The angle of adjacent with the long scale groove of the benchmark left and right sides two long scale grooves of long scale groove relative datum and blowout patche mid point respectively is 15 °; The angle of all the other every adjacent two long scale grooves and blowout patche mid point is all 15 °, or saying on 360 ° blowout patche external diameter end face, whenever to be separated by 15 ° is provided with a long scale groove.
Can find out by above-mentioned: short scale groove 3.3.1 is along with total number average that varying in size of blowout patche 3.3 outside dimensions is provided with is different; 24 of the sums that long scale groove 3.3.2 is provided with then are constant; As long as satisfy the long scale groove of benchmark must be to prolong along blowout patche external diameter end face with arbitrary short scale groove to make; 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; The long relatively scale groove of short scale groove 3.3.1 3.3.2 is short, is 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 limited.
2. after processing all short scale groove 3.3.1 and long scale groove 3.3.2 on the blowout patche 3.3 again to the external diameter end face of blowout patche with lack the scale groove and carry out chromium plating, the external diameter end face chromium plating of blowout patche also comprises long scale groove 3.3.2 certainly.Though chromium plating is related domain technological means commonly used; But the objective of the invention is in order to improve the wear resistance and the heat resistance of blowout patche external diameter end face; Especially strengthen the reflecting power and the antirust ability of blowout patche external diameter end face; For implementing said assist control mode reliable preparation is provided, the blowout patche external diameter after the chromium plating should meet the size requirement of design code.
To sum up can find out:
Short scale groove is set on blowout patche can realizes high-accuracyization of turntable bearing, thereby reduce the Costco Wholesale of lathe with long scale groove.
Short scale groove 3.3.1 that is provided with on the blowout patche 3.3 and long scale groove 3.3.2 make its printing opacity more owing to chromium plating; The non-contact face that does not have short scale groove place is then light tight; Be convenient to the monitoring of transmission-type grating sensor 4; Simultaneously the long scale groove that is provided with of blowout patche external diameter end face alternate 15 ° as a reference line mark, thereby make reflecting light gate sensor 2 obtain absolute base fast on schedule through the reference line mark.
The blowout patche external diameter end face of turntable bearing 3 adopts the chromium plating mode, makes blowout patche 3.3 have good wear resistance and heat resistance, especially has very strong reflecting power and antirust ability with 2 times blowout patches 3.3 of reflecting light gate sensor in that transmission-type grating sensor 4 is set.
In conjunction with Fig. 1, about centering on the assist control mode of blowout patche architecture advances:
3. the resemblance according to turntable bearing 3 processes supporting seat; The bottom of supporting seat 1 is provided with the through hole that is used for fixing supporting seat; The external diameter end face of supporting seat 1 radially is provided with three endoporus that are used for sensor installation along it; Said sensor is meant two transmission-type grating sensors 4 and a reflecting light gate sensor 2; Wherein two said endoporus balanced configurations and its central axis are concordant with blowout patche noncontact face is used for installing respectively two transmission-type grating sensors 4; External diameter end face and this endoporus that the central axis of another said endoporus points to blowout patche are used to install reflecting light gate sensor 2; The said endoporus that two transmission-type grating sensors 4 are installed is on same central axis, and the said endoporus central axis that two transmission-type grating sensors 4 are installed then is parallel to each other with the said 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 symmetrical position with the transmission-type grating sensor shown in the solid line; But this does not represent that two transmission-type grating sensors 4 are balanced configurations, and the transmission-type grating sensor shown in Fig. 1 dotted line just shows and exists.Has good dynamic balancing control characteristic after supporting base is fixing.
The short scale groove 3.3.1 of two transmission-type grating sensor 4 monitoring blowout patches 3.3 plays 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 loaded down with trivial details systematic error that mechanical structure caused; And have measuring accuracy height, strong, the characteristic of simple structure of antijamming capability, be good selection to the fine measurement of turntable bearing angular displacement.
4. a conditioning circuit box is set, and this conditioning circuit box contains A/D converter, signal digital processor DSP and D/A converter.
5. when turntable bearing 3 in the lathe casing during 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 said through hole of supporting seat 1 by bolt with the supporting seat fix in position; Notice behind the fix in position whether two transmission-type grating sensors 4 and reflecting light gate sensor 2 are in contact with one another phenomenon with blowout patche 3.3 short scale groove 3.3.1 with long scale groove 3.3.2, as if having contact phenomena then should adjust transmission-type grating sensor 4 or the installation site of reflecting light gate sensor 2 is not till coming in contact phenomenon..
The lighting outlet of two transmission-type grating sensors 4 and reflecting light gate sensor 2 is connected on the A/D converter of conditioning circuit box 5; Two transmission-type grating sensors 4 are used to monitor the short scale groove 3.3.1 of blowout patche 3.3 and play the actual deflection amount of monitoring the blowout patche angular displacement, and reflecting light gate sensor 2 is used to monitor the long scale groove 3.3.2 of blowout patche 3.3 and play the 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 not having friction and installs, to prolong the working life of transmission-type grating sensor 4 and reflecting light gate sensor 2.
When servomotor or stepper motor work; Inner ring 3.4 rotates with the turbine and worm device simultaneously with blowout patche 3.3 and angular displacement takes place; This moment, two transmission-type grating sensors 4 were summarised in blowout patche 3.3 angular displacement signals that monitor on the A/D converter of modulate circuit box 5 with reflecting light gate sensor 2; A/D converter feeds back to electronics after-treatment system CNC with said angular displacement signal by signal digital processor DSP and D/A converter again, and electronics after-treatment system CNC is transferred to servomotor or stepper motor again with the analog control signal of revising after by data and then improves the degree of accuracy of turntable bearing angular displacement.
Self-defining relatively open loop control mode; 1. of the present invention-as 5. just to be equivalent to a self-defined close-loop control mode; Close-loop control mode can solve the drawback of open loop control mode; Reduce the encoder of actuating motor in the open loop control mode; Reduce the machine tooling cost, improve the degree of accuracy of turntable bearing angular displacement.
Easy mounting of the present invention, said sensor are convenient to adjustment, and being specially adapted to diagonal displacement has on the revolving table or index plate of numerical control machine tool or other precision optical machinery of high-accuracy requirement.
Claims (1)
1. controlling method that is used to improve turntable bearing angular displacement degree of accuracy, said 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 end thrust cylindrical roller (3.7); The outer ring (3.1) of said turntable bearing (3) is fixing, in the endoporus of inner ring (3.4) and blowout patche (3.3), is fitted with the turbine and worm device, and this turbine and worm device connects with actuating motor or stepper motor; When actuating motor or stepper motor energising work; Actuating motor or step motor drive turbine and worm device; The turbine and worm device drives blowout patche (3.3) rotation again and produces angular displacement; This transmission process is customized for open loop control mode; This open loop control mode is because actuating motor or the energising departure of stepper motor and the mechanical transmission error of turbine and worm device have reduced the degree of accuracy of blowout patche angle of rotation displacement; It is characterized in that: said controlling method comprises following two-part content:
The architecture advances of I, blowout patche (3.3);
II, around the assist control mode of blowout patche (3.3) architecture advances;
Architecture advances about blowout patche (3.3):
① without changing the shaft ring (3.3) on the basis of the existing structure, the first non-contact surface of the shaft of the outer ring around the edge of the processing of the n-th pitch being equal, short scale groove (3.3.1), a shaft ring contact surface refers to the axis of the inner ring in contact with the surface, and the? ?
, and the formula wherein i =
, i just take the integer before the decimal point, the axis of the D ring (3.3) outside diameter mm; in either a short-scale trough basis and this short scale slot extending along the shaft end diameter circle made into a reference length scale trough to trough as the base reference length scale along the axis circle diameter end production 23 length scale trough, so that the outer diameter of the shaft ring groove face including the reference length scale of the formation of 24, including a long-scale trough (3.3.2), and the reference length scale trough around two adjacent grooves relative to the benchmark long scale length scale trough the angle between the axis of the circle midpoint of 15 °, scale each of the remaining two long grooves adjacent the shaft angle between the midpoint of the same ring
15 °, or saying on 360 ° blowout patche external diameter end face, whenever to be separated by 15 ° is provided with a long scale groove (3.3.2);
2. after processing all short scale grooves (3.3.1) and long scale groove (3.3.2) on the blowout patche (3.3) again to the external diameter end face of blowout patche with lack the scale groove and carry out chromium plating;
About centering on the assist control mode of blowout patche (3.3) architecture advances:
3. the resemblance according to turntable bearing (3) processes supporting seat (1); The bottom of supporting seat (1) is provided with the through hole that is used for fixing supporting seat; The external diameter end face of supporting seat (1) radially is provided with three endoporus that are used for sensor installation along it; Said sensor is meant two transmission-type grating sensors (4) and a reflecting light gate sensor (2); Wherein two said endoporus balanced configurations and its central axis are concordant with blowout patche noncontact face is used for installing respectively two transmission-type grating sensors (4); External diameter end face and this endoporus that the central axis of another said endoporus points to blowout patche are used to install reflecting light gate sensor (2); The said endoporus that two transmission-type grating sensors (4) are installed is on same central axis, and the said endoporus central axis that two transmission-type grating sensors (4) are installed then is parallel to each other with the said endoporus central axis that reflective gratings sensing (2) device is installed;
A conditioning circuit box (5) 4. is set, and this conditioning circuit box contains A/D converter, signal digital processor DSP and D/A converter;
⑤ When the turntable bearing (3) cabinets installed in place of the machine when the turntable bearing (3) has installed two put on a transmissive grating sensors (4) and reflective grating sensor (2) of the support base (a ), support base (1) through the through hole of the bolt in place the support base and fixed in place attention to two transmissive grating sensors (4) and reflective grating sensor (2) and the shaft ring (3.3) Short scale trough (3.3.1) and long-scale trough (3.3.2) if there is contact with each other phenomenon, the phenomenon should be adjusted if the contact transmissive grating sensors (4) or reflective grating sensor (2) is not until the installation location contact occurs until the phenomenon; the two transmissive grating sensors (4) and reflective grating sensor (2) of the lead connected to the conditioning circuit box (5) of the A / D converter, two transmissive grating sensors (4 ) for monitoring shaft ring (3.3) Short Scale Slot (3.3.1) and serves to monitor the actual angular displacement shaft ring deflection, reflective grating sensor (2) for monitoring shaft ring (3.3) of the length scale trough (3.3.2) and play a role in monitoring standards;
When servomotor or stepper motor work; Inner ring (3.4) and blowout patche (3.3) rotate with the turbine and worm device simultaneously and angular displacement take place; This moment, two transmission-type grating sensors (4) and reflecting light gate sensor (2) were summarised in blowout patche (3.3) angular displacement signal that monitors on the A/D converter of modulate circuit box (5); A/D converter feeds back to electronics after-treatment system CNC with said angular displacement signal by signal digital processor DSP and D/A converter again, and electronics after-treatment system CNC is transferred to servomotor or stepper motor and then adjustment again with the analog control signal of revising after by data or improves the degree of 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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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103197687A (en) * | 2013-03-13 | 2013-07-10 | 洛阳轴研科技股份有限公司 | Angular displacement monitoring and controlling method when solid of revolution rotates |
| CN103410873A (en) * | 2013-07-31 | 2013-11-27 | 如皋市非标轴承有限公司 | Built-in engineering machinery slewing bearing structure |
| CN106142137A (en) * | 2015-07-31 | 2016-11-23 | 宁夏巨能机器人系统有限公司 | A kind of articulated robot self-checking device and calibration steps |
| 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 |
| DE19640895A1 (en) * | 1996-10-04 | 1998-04-09 | Schaeffler Waelzlager Ohg | Rolling bearings with an integrated speed measuring device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103197687A (en) * | 2013-03-13 | 2013-07-10 | 洛阳轴研科技股份有限公司 | Angular displacement monitoring and controlling method when solid of revolution rotates |
| CN103197687B (en) * | 2013-03-13 | 2015-11-18 | 洛阳轴研科技股份有限公司 | Angular displacement monitoring and control method when a kind of solid of revolution rotates |
| CN103410873A (en) * | 2013-07-31 | 2013-11-27 | 如皋市非标轴承有限公司 | Built-in engineering machinery slewing bearing structure |
| CN103410873B (en) * | 2013-07-31 | 2015-09-02 | 如皋市非标轴承有限公司 | A kind of built-in engineering machinery pivoting support structure |
| CN106142137A (en) * | 2015-07-31 | 2016-11-23 | 宁夏巨能机器人系统有限公司 | A kind of articulated robot self-checking device and calibration steps |
| 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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|---|---|
| CN102352889B (en) | 2014-08-06 |
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