CN114136184B - Bearing ring inner diameter oil guide groove taper and size measurement method and equipment based on three-coordinate measurement - Google Patents
Bearing ring inner diameter oil guide groove taper and size measurement method and equipment based on three-coordinate measurement Download PDFInfo
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- CN114136184B CN114136184B CN202111433869.1A CN202111433869A CN114136184B CN 114136184 B CN114136184 B CN 114136184B CN 202111433869 A CN202111433869 A CN 202111433869A CN 114136184 B CN114136184 B CN 114136184B
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- 238000005259 measurement Methods 0.000 title claims abstract description 51
- 238000000691 measurement method Methods 0.000 title claims description 7
- 238000000034 method Methods 0.000 claims abstract description 24
- 239000000523 sample Substances 0.000 claims description 26
- 238000004513 sizing Methods 0.000 claims 1
- 238000001514 detection method Methods 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 57
- 238000010586 diagram Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 102100024359 Exosome complex exonuclease RRP44 Human genes 0.000 description 1
- 101000627103 Homo sapiens Exosome complex exonuclease RRP44 Proteins 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/08—Measuring arrangements characterised by the use of mechanical techniques for measuring diameters
- G01B5/12—Measuring arrangements characterised by the use of mechanical techniques for measuring diameters internal diameters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/0002—Arrangements for supporting, fixing or guiding the measuring instrument or the object to be measured
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/004—Measuring arrangements characterised by the use of mechanical techniques for measuring coordinates of points
- G01B5/008—Measuring arrangements characterised by the use of mechanical techniques for measuring coordinates of points using coordinate measuring machines
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- Length Measuring Devices With Unspecified Measuring Means (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
A method and equipment for measuring taper and size of an inner diameter oil guide groove of a bearing ring based on three-coordinate measurement belong to the technical field of measurement. The method aims to solve the problems of low measurement efficiency and low measurement precision of the existing method of measuring two persons of primary detection and secondary detection on the same instrument respectively and manually calculating the two persons and the measuring method of the horizontal measuring instrument. Firstly, determining a Z axis and an X axis of a workpiece coordinate system by using the end face of a ferrule, establishing the workpiece coordinate system, and generating a cone under the workpiece coordinate system, wherein the cone angle of the cone is the cone angle of the cone which is required to be reversely pushed out according to the cone angle on a drawing; then calling a cone and plane intersection command to enable the end face of the ferrule to be intersected with the oil guiding groove cone, so as to obtain the inner diameter oil guiding groove size; and respectively measuring two section circles corresponding to the height difference in the inner diameter groove cone, and then calculating to obtain the inner diameter oil guide groove taper. The measuring device is mainly used for measuring the inner diameter oil guide groove of the bearing ring.
Description
Technical Field
The invention relates to a method and equipment for measuring taper and size of an inner diameter oil guide groove of a bearing ring, and belongs to the technical field of measurement.
Background
The bearing inner diameter is provided with a taper groove, so that the contact surface between the bearing inner ring and the shaft can be reduced, the centrifugal force lubricating oil can conveniently form pressure, the oil supply is facilitated, and in addition, the inner diameter of the bearing cannot be fused and worn due to the action of an oblique angle oil wedge. A schematic view of the inner diameter of the bearing inner race with tapered grooves is shown in fig. 1.
The traditional method for measuring the workpiece with the taper groove needs to finish the measurement of two persons on the same instrument respectively by main inspection and rechecking, and manually calculates the measured results, checks whether the measured results are consistent after the measurement is finished, and re-measures if the measured results are inconsistent, so that the measurement efficiency is low. In order to improve the measurement efficiency and the measurement accuracy, development of the technical research on the taper and the size detection of the inner diameter oil guide groove of the bearing ring is imperative.
The three-coordinate measuring machine is a novel high-efficiency precise measuring device, is widely applied to the manufacturing fields of machinery, electronics, aviation, aerospace and the like at present, is not only used for measuring the shape and the size, the hole site, the center diameter and the outline of various mechanical parts, dies and the like, but also is particularly suitable for measuring workpieces with complex structures and high precision. However, the existing three-coordinate measuring method based on the three-coordinate measuring machine cannot measure the taper angle and the taper angle (does not have a measuring command of the taper angle and the taper angle), so that the taper angle and the taper angle cannot be measured by utilizing the three-coordinate measuring method at present. Meanwhile, three-coordinate measurement is only a system for measurement, the actual measurement process needs to be manually arranged according to the structure of the component, and even for the same component, if the measurement processes are inconsistent, different measurement results can be obtained.
Disclosure of Invention
The invention aims to solve the problems of low measurement efficiency and low measurement precision of the traditional method of measuring and manually calculating by two persons on the same instrument respectively and the traditional horizontal measuring instrument measuring method.
The measuring method of the taper and the size of the inner diameter oil guide groove of the bearing ring based on three-coordinate measurement is based on a three-coordinate measuring machine, and the specific measurement comprises the following steps:
s1, selecting and calibrating a probe;
Further, the probe rod is 20mm long and 3mm in diameter, and the probe is vertically downward;
S2, clamping the ferrule by using a clamp; the ferrule is a bearing ferrule;
s3, establishing a manual workpiece coordinate system:
under a machine coordinate system, respectively manually measuring the end face A of the ferrule by using a probe to determine the Z-axis direction of the workpiece coordinate system, manually measuring the inner diameter circular surface of the ferrule to determine the original point position of the workpiece coordinate system, measuring a point in any one oil guide groove of the ferrule, forming the X-axis direction of the workpiece coordinate system by the circle center of the inner diameter circular surface of the ferrule and the connecting line direction of the measuring point in the oil guide groove, and completing the establishment of the manual workpiece coordinate system of the ferrule;
s4, establishing an automatic workpiece coordinate system:
automatically generating a ferrule end face according to the drawing size under a manual workpiece coordinate system, automatically generating a ferrule inner diameter circular surface, and measuring by using a probe to determine the Z-axis direction and the original point position of the automatic workpiece coordinate system; then forming an X-axis of an automatic workpiece coordinate system by connecting the oil guide groove points measured under the machine coordinate system with the circle center of the inner diameter of the automatically measured ferrule, and completing the establishment of the automatic workpiece coordinate system of the ferrule;
s5, measuring the taper size of the oil guide groove of the inner diameter of the ferrule:
Under an automatic workpiece coordinate system, measuring two cross-sectional circles of the inner diameter oil guide groove of the ferrule by using a probe to form a cone: each ferrule inner diameter oil guide groove corresponds to a point, a circle is determined based on the inner points of all ferrule inner diameter oil guide grooves, then the cone angle alpha of the cone corresponding to the circle is reversely pushed out according to the cone angle of 1:beta on a drawing, a cone body is determined according to the circle and the cone angle alpha determined by the inner points of all ferrule inner diameter oil guide grooves, and the cone body is actually formed by two section circles of the ferrule inner diameter oil guide grooves;
further, the cone angle α=2×tan -1 (1/2 β);
Then, the end face of the ferrule is intersected with the cone of the inner diameter oil guiding groove of the ferrule by utilizing an intersection command of three-coordinate software to form a cross-section circle of the inner diameter oil guiding groove of the ferrule, namely the size of the inner diameter oil guiding groove to be measured;
And respectively measuring two cross-sectional circles with the height of the cone body of the inner diameter oil guide groove of the ferrule as H, respectively measuring two cross-sectional circles with the height difference as H, and then calculating to obtain the taper of the inner diameter oil guide groove.
The device is a storage medium, and at least one instruction is stored in the storage medium, and is loaded and executed by a processor to realize a three-coordinate measurement-based bearing ring inner diameter oil guide groove taper and size measurement method.
An apparatus comprising a processor and a memory having stored therein at least one instruction loaded and executed by the processor to implement a bearing ring inside diameter oil guide groove taper and dimension measurement method based on three-coordinate measurement.
The beneficial effects are that:
The measuring efficiency and the measuring precision are greatly improved by measuring the taper size and the taper of the inner diameter groove of the bearing through three coordinates, the traditional method takes about 1 hour to measure a workpiece with the taper groove, and only 10 minutes are needed by utilizing the three coordinates to measure, and the three coordinates are integrally used for measuring the taper of the inner diameter groove. The three-coordinate measuring method for measuring the taper of the inner diameter groove has been popularized to the measurement of products of multiple models, and the measuring efficiency and the measuring precision are obviously improved.
Drawings
FIG. 1 is a schematic view of a bearing product with a tapered inner diameter groove of a certain type;
Fig. 2 (a) is a view from direction a of fig. 1, fig. 2 (B) is a view from direction B of fig. 1, and fig. 2 (C) is a view from direction C of fig. 1;
FIG. 3 is a schematic diagram of a clamp;
FIG. 4 is a schematic diagram of a bearing with a taper of an inner diameter groove of a certain type;
fig. 5 is a schematic diagram of the principle of taper measurement.
Detailed Description
The first embodiment is as follows:
The embodiment is a method for measuring the taper and the size of an inner diameter oil guide groove of a bearing ring based on three-coordinate measurement.
The specific measurement requirements of the measurement of the taper and the size of the bearing inner diameter oil guide groove are as follows: and measuring the taper and the cross section size of the intersection of the oil guide groove and the end face of the ferrule.
Selection of measurement probes: according to the requirements of the product drawing (figure 1), the embodiment selects a 3mm vertical probe as a reference probe for measurement (in practice, a 2mm probe can also be selected). The 3mm vertical probe was used to measure bearing inner race reference: an end face, an inner diameter and an oil guiding groove.
Clamping a workpiece: in order to facilitate batch measurement, the bearing rings are clamped and fixed by adopting a clamp, as shown in fig. 3.
When the fixture is used for carrying out batch measurement on the bearing rings, after the first bearing ring is subjected to manual measurement on the end face A of the ring and the inner diameter circle B of the ring and a workpiece coordinate system is manually established, the end face A of the ring and the inner diameter circle B of the ring are not required to be manually measured on the bearing ring and the workpiece coordinate system is manually established, and the workpiece coordinate system is directly and automatically established and measured based on a program.
Measurement principle:
according to the drawing (figure 1) of the taper product of the oil guide groove of the inner diameter of the bearing, a three-coordinate detection scheme is determined, the end face A of the ferrule is used for determining the Z-axis direction of a workpiece coordinate system, the inner diameter round face B of the ferrule is used for determining the circle center of the workpiece coordinate system, any one oil guide groove and the inner diameter circle center are used for determining the X-axis direction of the workpiece coordinate system, and the workpiece coordinate system is established, as shown in figure 4.
Generating a cone under a workpiece coordinate system, wherein the cone angle of the cone formed by each point (6 equal parts) of 6 oil guide grooves is required to reversely push out the cone angle alpha=2 tan -1 (1/200) of the corresponding cone according to the cone angle of 1:100 on a drawing, and the cone angle alpha is required to be used when the cone is measured by three coordinates; and then calling a cone and plane intersection command to enable the end face A of the ferrule to be intersected with the oil guiding groove cone, so as to obtain a cross-sectional circle of the inner diameter oil guiding groove, namely the inner diameter oil guiding groove size to be measured.
Measurement of ferrule taper, measuring two cross-sectional circles with a height difference of 10mm in the inner diameter groove cone, respectively, according to the definition of taper: the taper is the ratio of the diameter difference of the upper bottom circle and the lower bottom circle to the height of the frustum (figure 5), two section circles with the height difference H of the inner diameter oil guiding groove cone are respectively measured through three-coordinate programming, and then the inner diameter oil guiding groove taper is obtained through programming calculation and is output.
In this embodiment, three coordinates are adopted to measure according to the measurement requirement of the bearing inner diameter oil guiding groove, the taper and the size of the bearing inner diameter oil guiding groove are actually measured through programming in the process, and the specific measurement flow is as follows:
S1, selecting and calibrating a probe.
In the embodiment, PRB_2031_20 is selected and is positioned at a No.2 library position of a probe knife rest, the length of the probe rod is 20mm, the diameter of the probe rod is 3mm, and the probe is vertically downward;
s2, clamping the ferrule by using a clamp:
The end face of the ferrule, the taper of which is to be measured, is placed upwards on a workbench, and the ferrule is fixed on the workbench by a clamp.
The ferrule is a bearing ferrule;
S3, establishing a manual workpiece coordinate system (corresponding to a programmed rough coordinate system):
Under the machine coordinate system, the 3mm vertical probe PRB_2031_20 is used for respectively and manually measuring the end face A of the ferrule to determine the Z-axis direction of the workpiece coordinate system, the inner diameter circular surface of the ferrule is manually measured to determine the original point position of the workpiece coordinate system, one point (which is not manually determined but is a point determined in the oil guide groove based on a three-coordinate system) is measured in any oil guide groove of the ferrule, the connecting line direction of the circle center of the inner diameter circular surface of the ferrule and the measuring point in the oil guide groove forms the X-axis direction of the workpiece coordinate system, and the establishment of the manual workpiece coordinate system of the ferrule is completed.
The process is to mark the position of the workpiece in the machine coordinate system, and when the Z axis and the X axis are defined, the Y axis is defined, and the establishment of the workpiece coordinate system is completed.
S4, establishing an automatic workpiece coordinate system (a corresponding programmed refined coordinate system):
Automatically generating a ferrule end face according to the drawing size under a manual workpiece coordinate system, automatically generating a ferrule inner diameter circular face, measuring by using a 3mm vertical probe PRB_2031_20, and determining the Z-axis direction and the original point position of the automatic workpiece coordinate system; and then, connecting the oil guide groove points measured under the machine coordinate system with the circle center of the inner diameter of the automatically measured ferrule to form the X-axis of the automatic workpiece coordinate system, so as to complete the establishment of the automatic workpiece coordinate system of the ferrule.
The process is to measure the relevant dimensions and angles of the workpiece according to the drawing.
S5, measuring the taper size of the oil guide groove of the inner diameter of the ferrule:
In an automatic workpiece coordinate system, two cross-sectional circles of the ferrule inner diameter oil guide groove are measured with a 3mm vertical probe PRB_2031_20 to form a cone: each ferrule inner diameter oil guide groove corresponds to one point, a circle is determined based on all inner points of the ferrule inner diameter oil guide grooves (equal division points, in the embodiment, 6 ferrule inner diameter oil guide grooves correspond to 6 equal division points), then the cone angle alpha=2 tan -1 (1/2 beta) of the cone corresponding to the cone is reversely pushed out according to the cone angle alpha=2:100 (1:100 in the view of the drawing), and a cone is determined according to the circles and the cone angle alpha determined by all inner points of the ferrule inner diameter oil guide grooves, wherein the cone is actually formed by two cross-section circles of the ferrule inner diameter oil guide grooves;
the invention is determined based on the equal dividing points, so that the accuracy of the measurement result is better, and the stability of the measurement result is also better.
Then, the end face of the ferrule is intersected with the cone of the ferrule inner diameter oil guiding groove by utilizing an intersection command of three-coordinate software to form a cross-section circle of the ferrule inner diameter oil guiding groove (a circle formed by the outer sides of all ferrule inner diameter oil guiding grooves), namely the inner diameter oil guiding groove size to be measured;
And in addition, two cross-sectional circles with the height of the cone body of the inner diameter oil guiding groove of the ferrule being H=10mm are respectively measured through a three-coordinate software command, two cross-sectional circles with the height difference being H are respectively measured, and then the taper of the inner diameter oil guiding groove is obtained through calculation and output.
S6, saving the program and printing the report.
The measurement procedure for the programmed implementation is as follows:
! ! ! Needle checking
QualifyTool(NAM＝PRB_2031_20,DIA＝3.0,NRF＝Y,REF＝SPH,SCN＝Y,MGZ＝2,AZI＝0,ELV＝-90,SNT＝PMM,DEL＝Y,GEO＝SPH,UAD＝Y)
! ! ! Coarse-built coordinate system (the purpose of the coarse-built coordinate system is to tell the position of a three-coordinate measured part in a machine)
USEPRB use a reference probe (nam=prb_2031_20)
MEPLA hand measurement of ferrule end face reference
MECIR hand measuring ferrule inner diameter circular surface benchmark
MEPNT manually measure a point on any one of the inner diameter oil guide grooves
MCDPTPT A straight line is constructed by measuring a point on the inner diameter circle center and the inner diameter oil guide groove as an X axis of a workpiece coordinate system
BLDCSY set up a workpiece coordinate System
! ! ! Precision construction of a coordinate system (precision construction of a workpiece coordinate system for measuring relative dimensions and angles of a workpiece according to a drawing sheet)
GENCIR(NAM＝PLA_CNC,XCO＝0,YCO＝0,ZCO＝0,DIA＝144,NPT＝6,PLA＝XY,INO＝P,PDI＝3,CSY＝CSY_MAN,ZVL＝50,DEL＝Y,RTP＝0)
MEPLA(NAM＝PLA_CNC,CSY＝CSY_MAN,MOD＝NOE,ITY＝GSS,DEL＝N)
GENCIR(NAM＝CIR_NJ_CNC,XCO＝0,YCO＝0,ZCO＝-5,DIA＝CIR_MAN.$DM,NPT＝6,PLA＝XY,INO＝I,PDI＝3,CSY＝CSY_MAN,ZVL＝50,DEL＝Y,RTP＝0)
MECIR(NAM＝CIR_NJ_CNC,CSY＝CSY_MAN,PRO＝PLA_CNC,INO＝I,DEL＝N)
TRAELE(NAM＝POI(2),TRA＝CSY_MAN,OLD＝POI(1))
MCDPTPT(NAM＝AXI_CNC,TYP＝DIS,CSY＝CSY_MAN,CP＝DEF$DIS3,EL1＝CIR_NJ_CNC,TY1＝POI,ST1＝POI,EL2＝PNT(2),TY2＝POI,ST2＝POI,CNN＝DIS)
BLDCSY(NAM＝CSY_CNC,TYP＝CAR,SPA＝PLA_CNC,SDR＝+Z,PLA＝AXI_CNC,PDR＝+X,XZE＝CIR_CNC,YZE＝CIR_CNC,ZZE＝PLA_CNC)
! ! ! Measuring program of taper and size of inner diameter groove of ferrule (taking the taper and size measurement of inner diameter of bearing of a certain model as an example)
! Automatic generating cone CON (1)
! According to the definition of taper (fig. 5), the taper angle α, α=2 tan -1 (1/200) of the cone corresponding to the taper angle α, α=100 back-push on the drawing
＝0.572953
GENCON(NAM＝CON(1),XCO＝0,YCO＝0,ZCO＝-13,DIA＝136.43,NPT＝12,DIR＝Z,INO＝I,PDI＝3,CSY＝CSY_CNC,LEN＝11,NPL＝2,ANG＝α,ZVL＝50,DEL＝Y,RTP＝0)
! Cone CON (1) generated by measurement
MECON(NAM＝CON(1),CSY＝CSY_CNC,ITY-EXT,INO＝I,MOD＝EVA)
! The intersection command of the cone and the plane gives the cross-sectional circular diameter CIR (1)
CutConePla(NAM＝CIR(1),CON＝CON(1),CSY＝CSY_CNC,HGT＝0,INO＝I,MOD＝EVA)
! Automatic generation of a cross-sectional circle CIR_1 of an inner diameter groove
GENCIR(NAM＝CIR_1，XCO＝0，YCO＝0，ZCO＝-3，DIA＝136.43，NPT＝6，PLA＝XY,INO＝I,PDI＝3，CSY＝CSY_CNC,ZVL＝80，RTP＝0)
! Measuring a cross-sectional circle CIR_1 of the resulting inner diameter groove
MECIR(NAM＝CIR_1,CSY＝CSY_CNC,INO＝I,ITY＝GSS,DEL＝N)
! Automatic generation of another cross-sectional circle of inner diameter groove, CIR_2 and CIR_1, with a height difference of 10mm
GENCIR(NAM＝CIR_2，XCO＝0，YCO＝0，ZCO＝-13，DIA＝136.54，NPT＝6，PLA＝XY,INO＝I,PDI＝3，CSY＝CSY_CNC,ZVL＝80，RTP＝0)
! Measuring a further cross-sectional circle CIR_2 of the resulting inner diameter groove
MECIR(NAM＝CIR_2,CSY＝CSY_CNC,INO＝I,ITY＝GSS,DEL＝N)
! Radius compensation is performed on two cross-section circles CIR_1 and CIR_2 of the cone respectively
RCOR2D(SRC＝CIR_1，DST＝CIR_11，A_O＝XY)
RCOR2D(SRC＝CIR_2，DST＝CIR_22，A_O＝XY)
! Assigning values to two cross-section circles CIR_1 and CIR_2 of the compensated cone respectively
GETVALS(OBJ＝CIR_1，TYP＝ELE,RDS＝A,REA＝D_MIN)
GETVALS(OBJ＝CIR_2，TYP＝ELE,RDS＝A,REA＝D_MAX)
! Defining variable H and assigning 10
H＝10
! Defining variables TAPER and calculating taper
TAPER＝H/FABS(D_MAX-D_MIN)
! Defining variables TAPER as character strings TAPER
CVREACHS(NAM＝～TAPER,VAL＝TAPER,INT＝NSPZ＝N,RLS＝Y,TRZ＝Y)
! Concatenated string 1: and TAPER is a character string named Result
CONCAT(NAM＝～Result,STR＝((`TAPER＝1:`,～TAPER))
! Outputting the measuring Result of taper to Result
TEXT(STR＝～Result,DEV＝LP)
! Outputting the CIR (1) of the measurement result of the taper size of the inner diameter groove
ADDEVA(NAM＝CIR(1))
The second embodiment is as follows:
The embodiment is an apparatus, which is a storage medium, in which at least one instruction is stored, where the at least one instruction is loaded and executed by a processor to implement a method for measuring taper and size of an oil guide groove of an inner diameter of a bearing ring based on three-coordinate measurement.
And a third specific embodiment:
The embodiment is an apparatus comprising a processor and a memory, wherein at least one instruction is stored in the memory, and the at least one instruction is loaded and executed by the processor to implement a bearing ring inner diameter oil guide groove taper and size measurement method based on three-coordinate measurement.
The present invention is capable of other and further embodiments and its several details are capable of modification and variation in light of the present invention, as will be apparent to those skilled in the art, without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (5)
1. The method for measuring the taper and the size of the inner diameter oil guide groove of the bearing ring based on three-coordinate measurement is based on a three-coordinate measuring machine and is characterized by comprising the following steps of:
s1, selecting and calibrating a probe;
S2, clamping the ferrule by using a clamp; the ferrule is a bearing ferrule;
s3, establishing a manual workpiece coordinate system:
under a machine coordinate system, respectively manually measuring the end face A of the ferrule by using a probe to determine the Z-axis direction of the workpiece coordinate system, manually measuring the inner diameter circular surface of the ferrule to determine the original point position of the workpiece coordinate system, measuring a point in any one oil guide groove of the ferrule, forming the X-axis direction of the workpiece coordinate system by the circle center of the inner diameter circular surface of the ferrule and the connecting line direction of the measuring point in the oil guide groove, and completing the establishment of the manual workpiece coordinate system of the ferrule;
s4, establishing an automatic workpiece coordinate system:
automatically generating a ferrule end face according to the drawing size under a manual workpiece coordinate system, automatically generating a ferrule inner diameter circular surface, and measuring by using a probe to determine the Z-axis direction and the original point position of the automatic workpiece coordinate system; then forming an X-axis of an automatic workpiece coordinate system by connecting the oil guide groove points measured under the machine coordinate system with the circle center of the inner diameter of the automatically measured ferrule, and completing the establishment of the automatic workpiece coordinate system of the ferrule;
s5, measuring the taper size of the oil guide groove of the inner diameter of the ferrule:
Under an automatic workpiece coordinate system, measuring two cross-sectional circles of the inner diameter oil guide groove of the ferrule by using a probe to form a cone: each ferrule inner diameter oil guide groove corresponds to a point, a circle is determined based on the inner points of all ferrule inner diameter oil guide grooves, then the cone angle alpha of the cone corresponding to the circle is reversely pushed out according to the cone angle of 1:beta on a drawing, a cone body is determined according to the circle and the cone angle alpha determined by the inner points of all ferrule inner diameter oil guide grooves, and the cone body is actually formed by two section circles of the ferrule inner diameter oil guide grooves;
Then, the end face of the ferrule is intersected with the cone of the inner diameter oil guiding groove of the ferrule by utilizing an intersection command of three-coordinate software to form a cross-section circle of the inner diameter oil guiding groove of the ferrule, namely the size of the inner diameter oil guiding groove to be measured;
And respectively measuring two cross-sectional circles with the height of the cone body of the inner diameter oil guide groove of the ferrule as H, respectively measuring two cross-sectional circles with the height difference as H, and then calculating to obtain the taper of the inner diameter oil guide groove.
2. The three-coordinate measurement-based taper and dimension measurement method for the inner diameter oil guide groove of the bearing ring, which is disclosed in claim 1, is characterized in that the probe rod is 20mm long and 3mm in diameter in S1, and the probe is vertically downward.
3. The method for measuring the taper and the dimension of the inner diameter oil guiding groove of the bearing ring based on three-dimensional measurement according to claim 1 or 2, wherein the taper angle α=2×tan -1 (1/2 β).
4. An apparatus, characterized in that it is a storage medium in which at least one instruction is stored, said at least one instruction being loaded and executed by a processor to implement the three-coordinate measurement based bearing ring inner diameter oil guide groove taper and size measurement method according to one of claims 1 to 3.
5. An apparatus comprising a processor and a memory having stored therein at least one instruction loaded and executed by the processor to implement the three-coordinate measurement based bearing ring inner diameter oil guide groove taper and sizing method of one of claims 1 to 3.
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| JP2021120652A (en) * | 2020-01-30 | 2021-08-19 | 日本精工株式会社 | Groove diameter dimension measuring method for bearing ring for bearing, method of manufacturing roller bearing, machine, and method of manufacturing vehicle |
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