CN117740042A - Encoder fluted disc mounting structure and deviation correcting mounting method thereof - Google Patents
Encoder fluted disc mounting structure and deviation correcting mounting method thereof Download PDFInfo
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Abstract
The utility model relates to an encoder fluted disc mounting structure and installation method of rectifying thereof, it includes the tight spare that pushes up, a plurality of slant screw holes have been seted up to the fluted disc terminal surface slant, and a plurality of slant screw holes encircle the axis interval setting of fluted disc and each the axis of slant screw hole with the axis of fluted disc is 40 ~50 contained angle setting, the tight spare that pushes up is used for from outside to interior pass slant screw hole just the head of tight spare is used for pushing up with the outer fringe of main shaft under the effect of settlement torsion. The installation in the little space on adaptation main shaft has to be convenient for detect and adjust the installation accuracy of fluted disc, improve the effect of the detection accuracy of encoder.
Description
Technical Field
The application relates to the field of encoder fluted discs, in particular to an encoder fluted disc mounting structure and a deviation rectifying and mounting method thereof.
Background
The fluted disc of the encoder is a key component for detecting the rotating speed and the angle position of the main shaft in the magnetic encoder, and the installation accuracy of the fluted disc can influence the detection value. Referring to fig. 1 and 2, a toothed disc 1 is typically mounted with a toothed disc seat 01. The fluted disc 1 and the fluted disc seat 01 are provided with fixed threaded holes 03 parallel to the axis, when in installation, the fluted disc 1 is sleeved on the fluted disc seat 01 and is penetrated and fixed together through bolts 04, and the outer circle of the fluted disc seat 01 and the inner hole of the fluted disc 1 are generally designed to be excessively matched; then, the inner circle of the fluted disc seat 01 is sleeved on the main shaft 02, and the locking nut 4 is screwed from the outside to fix the fluted disc seat and limit the axial movement of the fluted disc 1 and the fluted disc seat 01.
The installation form not only occupies the originally compact internal space of the main shaft, but also is inconvenient to install when the space of the main shaft is smaller. And the installation accuracy of the fluted disc is indirectly influenced by the processing accuracy of the fluted disc seat, and when the processing or the installation accuracy of the fluted disc seat is problematic, the installation and the use accuracy of the fluted disc can be directly influenced.
Disclosure of Invention
In order to adapt to the installation of a small space on a main shaft, and facilitate the detection and adjustment of the installation precision of the fluted disc, the detection precision of the encoder is improved, and the encoder fluted disc installation structure and the deviation rectifying installation method are provided.
In a first aspect, the present application provides an encoder fluted disc mounting structure that adopts following technical scheme:
the utility model provides an encoder fluted disc mounting structure, includes the tight piece that pushes up, a plurality of slant screw holes have been seted up to the slant on the fluted disc terminal surface, a plurality of slant screw holes encircle the axis interval setting of fluted disc and each the axis of slant screw hole with the axis of fluted disc is 40 ~50 contained angle setting, the tight piece that pushes up is used for from outer to interior passing slant screw hole just the head of tight piece is used for pushing up with the outer fringe of main shaft under the effect of settlement torsion.
By adopting the technical scheme, a plurality of inclined threaded holes are formed in the circumferential direction of the fluted disc directly in an inclined way, then the propping piece penetrates through the inclined threaded holes and is propped against the outer edge of the main shaft by using the set torsion, the inclined threaded holes formed in the inclined way cannot damage teeth of the fluted disc, the set torsion is used for installing the propping piece so as to ensure that the outer edge of the main shaft cannot be worn, the fluted disc is fixed on the main shaft, the fluted disc is stressed axially and radially, the axial movement of the fluted disc on the main shaft can be limited, and therefore, a locking nut can be canceled on the basis of canceling a fluted disc seat, the occupation of space on the main shaft is further reduced, and the device is suitable for being installed on a small-space main shaft; the fluted disc is directly arranged on the main shaft, so that the outer circle runout of the fluted disc can be directly detected through the dial indicator, the mechanical precision of the fluted disc can be directly detected, and the detection precision of the fluted disc can be improved.
Preferably, the fluted disc and the main shaft have a diameter gap of 0.01-0.02mm, and the circumferential diameter gap is eliminated after the installation of each propping piece is completed.
Through adopting above-mentioned technical scheme, adopt little clearance fit's form with fluted disc and main shaft, the installation of fluted disc of being convenient for more to utilize the detection adjustment process that the fluted disc excircle beats to push up tight piece tight with the top, with the installation accuracy of guarantee fluted disc within the error scope of permission.
Preferably, the jacking piece is a hexagonal internal jackscrew made of copper.
Through adopting above-mentioned technical scheme, the jackscrew of copper material has certain extension force, and main shaft rotation in-process can produce certain vibrations, utilizes the extension force that copper material jackscrew self had, can stretch or shrink along with the vibrations of main shaft, ensures fluted disc and main shaft closely laminating, realizes the firm fixed of fluted disc, is favorable to improving the installation accuracy of fluted disc, thereby also can effectively reduce the jackscrew simultaneously along with main shaft rigid contact causes the probability of main shaft outer fringe wearing and tearing when vibrations of main shaft.
Preferably, an included angle between the axis of the inclined threaded hole and the axis of the fluted disc is set to be 45 degrees.
Through adopting above-mentioned technical scheme, set up the axis of slant screw hole and the contained angle of fluted disc axis to 45, not only be convenient for the processing of slant screw hole, also be favorable to balanced jackscrew and main shaft outer fringe between the atress simultaneously, eliminate the diameter clearance between fluted disc interior circle and the main shaft under the prerequisite that avoids causing wearing and tearing to the main shaft, guarantee the firm fixed of fluted disc.
Preferably, a lock nut is installed on the outer side of the fluted disc, and the lock nut is used for being abutted with the outer end face of the fluted disc.
Through adopting above-mentioned technical scheme, can still further install lock nut in the outside of fluted disc, improve the fixed effect of fluted disc.
In a second aspect, the present application provides a method for installing a gear disc of an encoder in a deviation rectifying manner, which adopts the following technical scheme:
a deviation rectifying and installing method of an encoder fluted disc installing structure comprises the following steps:
sleeving the fluted disc on the main shaft;
installing a propping piece into the inclined threaded hole, and ensuring that the propping piece contacts with the main shaft but does not prop up tightly with the main shaft;
rotating the main shaft at a constant speed, and determining the deviation correcting rotating speed of the main shaft by using a dial indicator;
rotating the main shaft at a constant speed according to the deviation correcting rotating speed, detecting by using a laser interferometer, and comparing the actual gear disc installation position mechanical angle according to the position deviation angle fed back by the positioning accuracy curve graph to determine the deviation angle position of the gear disc;
detecting the excircle runout of the fluted disc at the deviation angle position by using a dial indicator to obtain the actual runout deviation value of the fluted disc at the deviation angle position;
the tightness of a propping piece near the deviation angle position is regulated, and the main shaft is rotated at the deviation correcting rotating speed in the regulating process, and meanwhile, the numerical change of the dial indicator at the deviation angle position is observed;
the adjusted angle deviation is fed back by using a laser interferometer until the angle deviation value is adjusted to be within a qualified range;
and the rest of the propping piece is screwed up according to the set torsion, so that the diameter gap between the outer circle of the main shaft and the inner hole of the fluted disc is eliminated.
By adopting the technical scheme, after the fluted disc is mounted on the main shaft, the jackscrews are firstly mounted in the inclined threaded holes and lightly fixed, namely, the jackscrews are ensured to be in contact with the outer edge of the main shaft but not tightly propped against the main shaft, then the deviation angle position where deviation appears on the fluted disc is determined through a positioning precision curve fed back by the laser interferometer, the actual jumping deviation value at the deviation angle position is detected by using the dial indicator, so that the value of the outer circle jumping of the fluted disc is determined, then the jackscrews near the deviation angle are found, the tightness of the jackscrews is regulated, after the regulation is finished, the outer circle jumping value of the dial indicator displayed at the deviation angle position is observed in a rotating way, whether the regulation is finished or not is verified, the regulation is excessive or not finished, namely, the fluted disc and the main shaft are coaxial, then the regulation result is verified again by using the laser interferometer until the angle deviation value is regulated to be within a qualified range, then the rest jackscrews are fixed according to the set torsion tightly propping, and the probability of the fluted disc caused by the deflection in subsequent use is reduced; the jacking piece not only plays a role in fixing the fluted disc and the main shaft, but also has the function of adjusting the installation precision error of the fluted disc when the installation error of the fluted disc exists, namely, the application can eliminate the diameter gap between the inner hole of the fluted disc and the outer diameter of the main shaft while adjusting the runout of the outer circle so as to ensure that the fluted disc is fixed on the main shaft without error, thereby being beneficial to improving the installation precision of the fluted disc and the feedback precision of the encoder on the rotating speed and the angle position of the main shaft; and this application is direct to be fixed the fluted disc on the main shaft, has cancelled the fluted disc seat, has practiced thrift the originally compact space on the main shaft, the installation of fluted disc of being convenient for to the direct use amesdial of being convenient for detects the excircle of fluted disc and beats, can directly obtain the excircle of fluted disc and beat, and need not reuse the excircle of fluted disc seat to beat and indirectly reflect the excircle of fluted disc and beat, and the detection precision to the fluted disc is higher.
Preferably, the spindle is rotated at a constant speed, and the deviation correcting rotating speed of the spindle is determined by using a dial indicator, and the method comprises the following steps:
the probe ball head of the dial indicator is abutted on the tooth top circle of any tooth of the fluted disc;
and rotating the main shaft to enable the probe ball head of the dial indicator to immediately fall back down when leaving the outer circle surface of the first tooth and just fall on the outer circle surface of the second tooth adjacent to the fluted disc and the first tooth, so as to determine the deviation correcting rotating speed of the main shaft.
Through adopting above-mentioned technical scheme, adjust repeatedly and make the probe bulb of amesdial fall to the excircle surface of second tooth from leaving the surface of first tooth when just, can carry out the deviation correcting rotational speed of follow-up detection after the rotational speed determination at this moment.
Preferably, after determining the deviation correcting rotation speed of the main shaft, the fluted disc is rotated for one circle according to the deviation correcting rotation speed, and the outer circle runout of each tooth of the fluted disc is detected by using a dial indicator.
Through adopting above-mentioned technical scheme to the rotation fluted disc of rectifying with having confirmed is rotated a round, can confirm the excircle of each tooth of fluted disc and beat, detects conveniently, and can directly detect the excircle of fluted disc and beat, need not utilize the excircle of fluted disc seat to beat and carry out indirect measurement to the excircle of fluted disc and beat, be favorable to improving the detection precision to the excircle of fluted disc and beat, further can improve the installation accuracy of fluted disc.
Preferably, all the propping pieces are simultaneously screwed by using a torque wrench with the preset torque force, and then a lock nut is arranged on the main shaft, so that the inner end surface of the lock nut is propped against the outer end surface of the fluted disc.
Through adopting above-mentioned technical scheme, all jack-up pieces screw up simultaneously, can the diameter clearance of each position just even elimination simultaneously, reduce the eccentric probability of fluted disc emergence once more of the in-process of tightening jack-up piece, screw up jack-up piece with the torsion of setting for and avoid jack-up piece torsion too long the damage that causes the main shaft of extension when too big.
In summary, the present application includes at least one of the following beneficial technical effects:
1. according to the method, the inclined threaded holes are obliquely formed in the end face of the fluted disc at the inclined angle of 40-50 degrees, the jacking pieces matched with the inclined threaded holes are arranged, the jacking pieces are installed in the inclined threaded holes and the main shaft is jacked by set torsion, the fluted disc seat is not required to be used for fixing the fluted disc on the main shaft, the installation is more convenient, meanwhile, the originally compact space on the main shaft is saved, meanwhile, the jacking pieces jacked in the inclined mode have radial limiting effect and axial limiting effect, the fixing effect on the fluted disc is better, the tightness of the jacking pieces at corresponding positions is convenient to adjust, when the fluted disc is eccentrically installed, the installation position of the fluted disc is convenient to be adjusted and rectified, and the detection precision of the encoder is improved;
2. according to the method, after the fluted disc is sleeved on the main shaft, the installation accuracy (eccentric condition) of the fluted disc is detected before the tightening piece is screwed, namely, the deviation angle position is found through the laser interferometer, the tightness of the tightening piece near the deviation angle position is regulated, the outer circle jumping condition of the fluted disc at the regulated deviation angle position is detected through the dial indicator, when the main shaft is rotated at the deviation correcting rotating speed and the outer circle of the fluted disc uniformly jumps up and down, the regulation condition is checked again through the laser interferometer, and when the regulation angle deviation value is regulated to be in a qualified range, the deviation correcting and the regulating of the installation accuracy of the fluted disc can be synchronously realized in the installation process, and the positioning accuracy of the fluted disc is improved;
3. the fluted disc is directly arranged on the main shaft, the outer circle runout of the fluted disc can be directly detected by using the dial indicator, and the detection precision is higher.
Drawings
FIG. 1 is a schematic diagram of a toothed disc in the background art.
Fig. 2 is an assembled schematic view of a toothed disc in the background art.
FIG. 3 is a schematic diagram of the structure of a toothed disc in the encoder toothed disc mounting structure of the present application.
FIG. 4 is a schematic diagram of the assembly of a toothed disc in the encoder toothed disc mounting structure of the present application.
Fig. 5 is a partial enlarged view at a in fig. 4.
FIG. 6 is a flow chart of a method of installing a correction of an encoder tooth disc installation structure of the present application.
FIG. 7 is a schematic diagram of detecting runout of the outer circle of the fluted disc using a dial gauge.
Reference numerals illustrate: 01. a fluted disc seat; 02. a main shaft; 03. fixing the threaded holes; 04. a bolt; 1. fluted disc; 12. a first tooth; 12. a second tooth; 2. oblique threaded holes; 3. a tightening member; 4. a lock nut; 5. a dial gauge; 51. probe ball head.
Detailed Description
The present application is described in further detail below in conjunction with figures 3-7.
The embodiment of the application discloses an encoder fluted disc mounting structure. Referring to fig. 3, 4 and 5, the encoder toothed disc mounting structure includes a toothed disc 1 and a puller 3. The end face of the fluted disc 1 is obliquely provided with a plurality of oblique threaded holes 2 into which the jacking pieces 3 extend. The slant screw hole 2 is 3-M5 screw hole, and a plurality of slant screw holes 2 encircle the axis interval setting of fluted disc 1, and slant screw hole 2 is provided with at least three, and this application is given the slant screw hole 2 to be provided with 3 and is exemplified. The axes of the inclined threaded holes 2 and the axes of the fluted disc 1 are arranged at an included angle of 40-50 degrees, and the angles of the inclined threaded holes 2 are consistent. During installation, the fluted disc 1 is sleeved on the main shaft 02, the trend from the outer end face of the fluted disc 1 to the inner end face of the fluted disc 1 is ensured to be descending, then the tightening piece 3 passes through the inclined threaded hole 2 from outside to inside, and the tightening piece 3 is screwed with set torque by using a torque wrench, so that the head of the tightening piece 3 is tightly tightened with the outer edge of the main shaft 02 with set pressure.
The oblique threaded hole 2 which is obliquely arranged can not damage the teeth of the fluted disc 1, the outer edge of the main shaft 02 can be prevented from being worn by using the set torsion installation propping piece 3, the fluted disc 1 can be fixed on the main shaft 02 on the basis of not using the fluted disc seat 01, the space on the main shaft 02 is reduced, and the installation of the fluted disc 1 is facilitated. Meanwhile, the obliquely arranged propping piece 3 can generate a horizontal component and a vertical component, so that the axial fixing of the fluted disc 1 and the radial fixing of the fluted disc 1 can be realized, the radial runout and the axial movement of the fluted disc 1 can be limited, the probability of the occurrence of deflection of the fluted disc 1 under the influence of various factors is reduced, and the installation precision of the fluted disc 1 is improved. Due to the axial component force generated by the jacking piece 3, the lock nut 4 can be omitted on the basis of canceling the fluted disc seat 01, so that the occupation of the space on the main shaft 02 is further reduced, and the installation on the small-space main shaft 02 is suitable. Under the condition that the space of the main shaft 02 is enough, the lock nut 4 can be installed, so that the inner end surface of the lock nut 4 is abutted with the outer end surface of the fluted disc 1, the installation of the lock nut 4 can further limit the axial movement of the fluted disc 1, and the probability of axial deflection of the fluted disc 1 is reduced.
In order to balance the horizontal component force and the vertical component force generated by the propping piece 3 and balance the stress between the head of the propping piece 3 and the main shaft 02, the included angle between the axis of the inclined threaded hole 2 and the axis of the fluted disc 1 is set to be 45 degrees, so that the inclined threaded hole 2 is convenient to process and the propping piece 3 is convenient to install.
In order to facilitate the assembly of the fluted disc 1 and the main shaft 02, a diameter gap of 0.01-0.02mm exists between the inner diameter of the fluted disc 1 and the outer diameter of the main shaft 02. I.e. the toothed disc 1 and the spindle 02 are mounted with a small clearance fit. After the plurality of propping pieces 3 are installed, the diameter gap can be eliminated, namely the deflection of the fluted disc 1 in the radial direction is limited, and the probability that the detection precision of the encoder is affected due to the deflection of the fluted disc 1 is reduced.
In order to reduce the probability of abrasion of the main shaft 02 caused by hard contact between the propping piece 3 and the main shaft 02 due to vibration of the main shaft 02, the propping piece 3 of the present application uses a hexagonal internal jackscrew made of copper. The copper material has better extension characteristic, so that extension force of the copper jackscrew can be utilized when the main shaft 02 vibrates, the jackscrew stretches or contracts along with the vibration of the main shaft 02, and the probability of abrasion of the outer edge of the main shaft 02 caused by hard contact between the jackscrew and the main shaft 02 along with the vibration of the main shaft 02 can be effectively reduced. Meanwhile, the jackscrew can also ensure that the fluted disc 1 is tightly attached to the main shaft 02, so that the fluted disc 1 is firmly fixed, and the probability of deflection of the subsequent fluted disc 1 is reduced.
The implementation principle of the encoder fluted disc mounting structure in the embodiment of the application is as follows: during installation, the fluted disc 1 is sleeved on the main shaft 02, then jackscrews are installed in all inclined threaded holes 2 by using a torque wrench, the head of each jackscrew is tightly propped against the outer edge of the main shaft 02 with set pressure, and then the locking nut 4 is screwed on the main shaft 02, so that the inner end face of the locking nut 4 is abutted against the outer end face of the fluted disc 1, the fluted disc 1 can be installed without the help of the fluted disc seat 01, the occupation of the originally compact space on the main shaft 02 is reduced, and the installation on the small-space main shaft 02 is suitable. By directly mounting the fluted disc 1 on the main shaft 02, the outer circle runout of the fluted disc 1 can be directly detected through the dial indicator 5 to directly detect the mechanical precision of the fluted disc 1, thereby being beneficial to improving the detection precision of the fluted disc 1.
The embodiment of the application also discloses a deviation rectifying and installing method of the encoder fluted disc installing structure. Referring to fig. 6 and 7, the deviation rectifying and installing method of the encoder fluted disc installing structure comprises the following steps:
s1: mounting a fluted disc 1: the fluted disc 1 is sleeved on the main shaft 02.
S2: mounting a jacking piece 3: the propping piece 3 is installed in the inclined threaded hole 2, and the propping piece 3 is ensured to be contacted with the main shaft 02 but not propped against the main shaft 02, so that a later adjustment space is reserved.
S3: and rotating the main shaft 02 at a constant speed, and determining the deviation correcting rotating speed of the main shaft 02 by using the dial indicator 5. Specifically, the speed of rotating two adjacent teeth of the fluted disc 1 is required to be adjusted to be the same as the rebound frequency of the lever dial indicator 5, and the method comprises the following steps:
s31: the probe ball 51 of the dial indicator 5 is abutted on the tip circle of any one tooth (named as a first tooth 12) of the fluted disc 1.
S32: the spindle 02 is rotated so that the probe ball head 51 of the dial indicator 5 immediately falls back down when leaving the outer circumferential surface of the first tooth 12 and falls on the outer circumferential surface of the second tooth 12 adjacent to the first tooth 12 just as the fluted disc 1, and the rotational speed of the spindle 02 at this time is determined to be the correction rotational speed.
S33: and rotating the main shaft 02 at a constant speed according to the deviation correcting rotating speed, and detecting the jumping values of all angles of the outer circle surface of the fluted disc 1 by using the dial indicator 5.
S4: and rotating the main shaft 02 at a constant speed according to the deviation correcting rotating speed, detecting by using a laser interferometer, and comparing the position deviation angle fed back by the positioning accuracy curve graph with the mechanical angle of the installation position of the actual fluted disc 1 to determine the deviation angle position of the fluted disc 1. The laser interferometer is a precise instrument for angle detection by utilizing an optical component (comprising an angle reflecting mirror and an angle interference mirror, the laser interferometer, the angle reflecting mirror and the angle interference mirror are collectively called a laser system), when the angle reflecting mirror rotates relative to the angle interference mirror, the optical path difference between two measurements is changed, an optical path difference signal is fed back to a computer, and the angle measurement value or the angle error is converted by software. That is, when the mounting of the fluted disc 1 is deviated, the optical path difference of the deviated angle position will change, and the deviation angle can be seen by using the positioning accuracy curve fed back by the computer, so as to determine the deviated angle position on the fluted disc 1. The method comprises the following steps:
s41: mounting and calibrating a laser system: the angle reflecting mirror is arranged on the main shaft 02, then the laser interferometer, the angle interference mirror and the angle reflecting mirror are arranged in a line, the axes of the laser interferometer, the angle interference mirror and the linear reflecting mirror are coincided with the axis of the main shaft 02, and the laser interferometer is repeatedly regulated so that the light emitted by the angle interference mirror and the angle reflecting mirror is always coincided on a lens of the laser interferometer.
S42: the encoder zeroes, and the laser system zeroes.
S43: running a numerical control program, and rotating the main shaft 02 according to the deviation correcting rotating speed: and the computer collects data, when the main shaft 02 reaches the initial target position, laser reading is recorded, the main shaft 02 rotates to drive the fluted disc 1, and the encoder detects the rotating speed and the rotating angle of the main shaft 02 and feeds the data back to the computer.
S44: the spindle 02 is moved to the second target at a set step distance (e.g., 5 deg.), and the angle mirror is rotated in the opposite direction at the set step distance.
S45: the system combines the readings of the laser interferometer and the angle mirror to record the position error of the spindle 02 at that angle.
S46: and continuing to rotate the main shaft 02 according to the deviation correcting angle, and measuring and drawing a positioning accuracy chart of the main shaft 02.
S47: and determining the angle of the installation error on the fluted disc 1 according to the positioning accuracy graph and the numerical value fed back by the encoder, namely determining the position of the fluted disc 1 at the angle as a deviation angle position.
S5: and detecting the excircle runout of the fluted disc 1 at the deviation angle position by using a dial gauge 5 to obtain the actual runout deviation value of the fluted disc 1 at the deviation angle position. The specific detection mode is the same as S3.
And S6, adjusting the tightness of the propping piece 3 near the deviation angle position according to the jumping deviation value. On the premise of unknown machining precision (including machining precision of tooth top circle, reference circle, tooth root circle and the like) of the fluted disc 1, the machining precision of the fluted disc 1 is firstly assumed to be qualified, namely, each tooth top circle, reference circle and tooth root circle on the fluted disc 1 are coaxial with an inner hole of the fluted disc 1. When the tightness of the jacking piece 3 is adjusted, the position of the fluted disc 1 is adjusted by utilizing the numerical value displayed by the dial indicator 5, so that the axis of the inner hole of the fluted disc 1 is overlapped with the axis of the main shaft 02. Specifically, the inspector judges whether the propping piece 3 is too loose or too tight according to the jumping deviation value, and adjusts the tightness of the propping piece 3 by using a wrench, in the adjusting process, the main shaft 02 is rotated at the correcting rotating speed, meanwhile, the numerical change of the dial indicator 5 at the deviation angle position is observed, so that the outer circle jumping of the adjusted fluted disc 1 is displayed, the adjustment of the propping piece 3 is illustrated until the outer circle of the fluted disc 1 uniformly jumps, at this time, the fluted disc 1 and the main shaft 02 can be regarded as coaxial, and the installation accuracy of the fluted disc 1 can be regarded as qualified.
S7: and feeding back the adjusted angle deviation by using a laser interferometer until the angle deviation value is adjusted to be within a qualified range. After once adjusting in place, detecting again by using a laser interferometer, checking the reading precision of the encoder at the moment through a positioning precision graph displayed for the second time, and proving the mounting precision of the fluted disc 1 through the reading precision fed back by the encoder. If the detection result of the laser interferometer is not qualified or an error exists at a certain angle, the machining precision of the reverse-pushing fluted disc 1 does not meet the requirement, and the continuous adjustment to enable the fluted disc and the main shaft to be coaxial is useless. At this time, the deviation angle position of the fluted disc 1 needs to be adjusted to enable the fluted disc 1 and the main shaft 02 to have a certain degree of eccentricity, and the machining error of the fluted disc 1 is compensated by adjusting the installation position of the fluted disc 1, so that the final detection result of the encoder is the actual rotation condition of the most attached main shaft, and the detection precision is the highest. And (5) continuously repeating the steps (S5-S6) when the mounting precision of the fluted disc is regulated until the laser interferometer detects that the detection precision of the encoder is within a qualified range.
S8: and the residual propping piece 3 is screwed up according to the set torque, so that the diameter gap between the outer circle of the main shaft 02 and the inner hole of the fluted disc 1 is eliminated. Specifically, the remaining tightening members 3 are simultaneously tightened using a torque wrench.
The implementation principle of the deviation rectifying and installing method of the encoder fluted disc installing structure in the embodiment of the application is as follows: when the fluted disc 1 is installed on the main shaft 02, jackscrews are installed in the inclined threaded holes 2 and are lightly fixed, namely, the jackscrews are ensured to contact with the outer edge of the main shaft 02 but not to be jacked with the main shaft 02. And then the probe ball head 51 of the dial indicator 5 is abutted on the tooth top circle of any one tooth, the spindle 02 is rotated at a constant speed until the probe ball head 51 just falls on the tooth top circle of the adjacent tooth after bouncing up from the tooth top circle, and the rotating speed of the spindle 02 at the moment is determined to be the deviation correcting rotating speed. And then rotating the main shaft 02 at a correction rotating speed, comparing the rotating speed and the rotating angle of the main shaft 02 fed back by the encoder with the outer circle positioning precision curve of the fluted disc 1, which is generated by detection of the laser interferometer, determining the angle of installation error (eccentricity) on the fluted disc 1, determining the position of the deviation angle, detecting the actual jumping deviation value at the position of the deviation angle by using the dial indicator 5, thereby determining the value of the outer circle jumping of the fluted disc 1, finding out the tightening piece 3 near the deviation angle, adjusting the tightness of the tightening piece 3, then observing the outer circle jumping value at the position of the deviation angle by rotation displayed by the dial indicator 5 after the adjustment is finished, verifying whether the adjustment is finished, and excessively adjusting or not, continuously pressing the adjusting tightening piece until the adjustment is finished, namely, the fluted disc 1 and the main shaft 02 are coaxial, then verifying the adjustment result by using the laser interferometer again until the angle deviation value is adjusted to be within a qualified range, and then using the torque wrench to synchronously tighten the rest tightening pieces 3 according to the set torque force, thereby realizing the low error installation positioning of the fluted disc 1, and facilitating the improvement of the whole detection precision of the encoder.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (9)
1. An encoder fluted disc mounting structure, its characterized in that: including top tight piece (3), a plurality of slant screw holes (2) have been seted up to fluted disc (1) terminal surface slant, and a plurality of slant screw holes (2) encircle the axis interval setting of fluted disc (1) and each the axis of slant screw hole (2) with the axis of fluted disc (1) is 40 ~50 contained angle setting, top tight piece (3) are used for from outer to interior passing slant screw hole (2) just the head of top tight piece (3) is used for pushing up tightly with the outer fringe of main shaft (02) under the effect of settlement torsion.
2. The encoder disc mounting structure of claim 1, wherein: the fluted disc (1) and the main shaft (02) have a diameter gap of 0.01-0.02mm, and the circumferential diameter gap is eliminated after the installation of each propping piece (3) is completed.
3. The encoder disc mounting structure of claim 1, wherein: the jacking piece (3) is made of copper inner hexagonal jackscrews.
4. The encoder disc mounting structure of claim 1, wherein: an included angle between the axis of the inclined threaded hole (2) and the axis of the fluted disc (1) is set to be 45 degrees.
5. The encoder disc mounting structure of claim 1, wherein: the outer side of the fluted disc (1) is also provided with a locking nut (4), and the locking nut (4) is used for being abutted with the outer end face of the fluted disc (1).
6. A deviation rectifying and installing method of an encoder fluted disc installing structure is characterized in that: the method comprises the following steps:
sleeving the fluted disc (1) on the main shaft (02);
installing a jacking piece (3) into the inclined threaded hole (2) and ensuring that the jacking piece (3) is in contact with the main shaft (02) but not jacked with the main shaft (02);
rotating the main shaft (02) at a constant speed, and determining the deviation correcting rotating speed of the main shaft (02) by using a dial indicator (5);
rotating the main shaft (02) at a constant speed according to the deviation correcting rotating speed, detecting by using a laser interferometer, and comparing the position deviation angle fed back by the positioning accuracy curve graph with the mechanical angle of the mounting position of the actual fluted disc (1) to determine the deviation angle position of the fluted disc (1);
detecting the excircle runout of the fluted disc (1) at the deviation angle position by using a dial gauge (5) to obtain the actual runout deviation value of the fluted disc (1) at the deviation angle position;
the tightness of the propping piece (3) near the deviation angle position is regulated, the main shaft (02) is rotated at the deviation correcting rotating speed in the regulating process, and the numerical change of the dial indicator (5) at the deviation angle position is observed at the same time;
the adjusted angle deviation is fed back by using a laser interferometer until the angle deviation value is adjusted to be within a qualified range;
and (3) the rest of the jacking piece is screwed up according to the set torque force, so that the diameter gap between the outer circle of the main shaft (02) and the inner hole of the fluted disc (1) is eliminated.
7. The method for rectifying and installing the encoder fluted disc installing structure according to claim 6, wherein: the main shaft (02) rotates at a constant speed, and the deviation correcting rotating speed of the main shaft (02) is determined by using the dial indicator (5), and the method comprises the following steps:
the probe ball head (51) of the dial indicator (5) is abutted on the tooth top circle of any tooth of the fluted disc (1);
and rotating the main shaft (02) to enable the probe ball head (51) of the dial indicator (5) to immediately fall back down when leaving the outer circle surface of the first tooth (12) and fall on the outer circle surface of the second tooth (12) adjacent to the first tooth (12) of the fluted disc (1) exactly, so as to determine the deviation correcting rotating speed of the main shaft (02).
8. The method for rectifying and installing the encoder fluted disc installing structure according to claim 7, wherein: after the deviation correcting rotating speed of the main shaft (02) is determined, the fluted disc (1) is rotated for a circle according to the deviation correcting rotating speed, and the outer circle runout of each tooth of the fluted disc (1) is detected by using a dial indicator (5).
9. The method for rectifying and installing the encoder fluted disc installing structure according to claim 6, wherein: and (3) all the jacking pieces (3) are screwed simultaneously by using a torque wrench with preset torque force, and then a lock nut (4) is arranged on the main shaft (02) so that the inner end face of the lock nut (4) is tightly jacked with the outer end face of the fluted disc (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311754779.1A CN117740042A (en) | 2023-12-19 | 2023-12-19 | Encoder fluted disc mounting structure and deviation correcting mounting method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311754779.1A CN117740042A (en) | 2023-12-19 | 2023-12-19 | Encoder fluted disc mounting structure and deviation correcting mounting method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117740042A true CN117740042A (en) | 2024-03-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311754779.1A Pending CN117740042A (en) | 2023-12-19 | 2023-12-19 | Encoder fluted disc mounting structure and deviation correcting mounting method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117740042A (en) |
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2023
- 2023-12-19 CN CN202311754779.1A patent/CN117740042A/en active Pending
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