CN112392858B - Assembling and adjusting method for inhibiting inclination angle rotation error of two-end support shafting structure - Google Patents
Assembling and adjusting method for inhibiting inclination angle rotation error of two-end support shafting structure Download PDFInfo
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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
- F16C25/00—Bearings for exclusively rotary movement adjustable for wear or play
- F16C25/06—Ball or roller bearings
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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
- F16C23/00—Bearings for exclusively rotary movement adjustable for aligning or positioning
- F16C23/06—Ball or roller bearings
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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
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
- F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
- F16C35/061—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing mounting a plurality of bearings side by side
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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
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
- F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
- F16C35/067—Fixing them in a housing
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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
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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
- G01B5/14—Measuring arrangements characterised by the use of mechanical techniques for measuring distance or clearance between spaced objects or spaced apertures
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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
- G01B5/24—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes
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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
- F16C2240/00—Specified values or numerical ranges of parameters; Relations between them
- F16C2240/30—Angles, e.g. inclinations
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention relates to an assembly and adjustment method for inhibiting inclination angle rotation errors of two-end support shafting structures, and belongs to the technical field of assembly and adjustment of precision shafting structures. The method has the advantages that the steps are clear, the dependence on the assembly and adjustment experience of operators is reduced, the method has the completeness characteristic, the assembly and processing errors can be effectively inhibited according to the method, and further the inclination angle rotation errors of the two-end supporting shaft system structures are effectively inhibited.
Description
Technical Field
The invention belongs to the technical field of installation and adjustment of a precision shafting structure, and particularly relates to an installation and adjustment method for inhibiting inclination angle rotation errors of two-end support shafting structures.
Background
At present, the installation and debugging of the structure of the precision shaft system is a core technology which is mastered by only a few domestic units, belongs to secret industry, and is mostly mastered by an experienced technology, and the correlation between the quality of the installation and the debugging and an empirical value is very high. The patent of the adjustment method for suppressing the inclination angle rotation error of the two-end supporting shaft system structure is not searched. For example, patent CN 106352846 a provides a method for testing the inclination rotation error with a limited rotation range, patent CN 109520446 a provides a method for measuring the dynamic inclination error of a high-speed rotating shafting, and a method for adjusting the shafting structure itself is not mentioned. Patent CN 106624776 a discloses a method for assembling a shaft system supported by a bidirectional single bearing with a certain span, which can improve the rotation precision of the shaft system by reasonably adjusting the pre-tightening amount of the bearing, and can adjust the rotation precision to be within 10 ″, but if the coaxial precision of the bearing holes at the two ends of the frame with a certain span is not enough, it is difficult to further improve the rotation precision by using the method. Patent CN 105387829A discloses a method for adjusting concentricity of a left half shaft and a right half shaft of a rotary table, the test index of adjustment does not relate to the rotation error of the inclination angle of a shaft system, the adjustment method is to assemble a bearing on the right half shaft, fix the bearing seat, measure the radial jump of the left half shaft and then adjust the left half shaft to an allowable range, and the adjustment method is not complete enough for the shaft system with high requirement on the rotation error of the inclination angle.
Disclosure of Invention
Technical problem to be solved
The technical problem to be solved by the invention is as follows: how to design an installation and adjustment method for inhibiting the inclination angle rotation error of a two-end support shafting structure.
(II) technical scheme
In order to solve the technical problem, the invention provides a structure for restraining a two-end support shafting, which comprises a left-end bearing pair assembly 01, a right-end bearing pair assembly 02, an outer frame 09 and an inner frame 10;
the left end bearing pair component 01 consists of a left bearing seat 18, a left shaft 19 and a backrest bearing pair; the right end bearing pair component 02 consists of a right bearing seat 21, a right shaft 20 and a back-to-back bearing pair; the outer frame 09 is assembled with the left bearing seat 18 at the left end, and an outer frame left positioning plane 07 and an outer frame left positioning cylindrical surface 03 are arranged on the mounting reference of the outer frame 09; the inner frame 10 and the left shaft 19 are assembled at the left end, and an inner frame left positioning plane 08 and an inner frame left positioning cylindrical surface 04 are arranged on the assembly reference of the inner frame 10; the outer frame 09 is assembled with the right bearing seat 21 at the right end, and the assembly reference of the outer frame 09 is an outer frame right positioning plane 12 and an outer frame right positioning cylindrical surface 06; the inner frame 10 and the right shaft 20 are assembled at the right end, and the assembling reference of the inner frame 10 is an inner frame right positioning plane 11 and an inner frame right positioning cylindrical surface 05.
Preferably, the left positioning plane 07 and the right positioning plane 12 of the outer frame 09 have a certain distance; and the left positioning plane 08 of the inner frame has a certain distance with the right positioning plane 11.
Preferably, the left bearing seat 18, the left shaft 19, the right bearing seat 21 and the right shaft 20 are prepared and formed on a machine tool in a one-time clamping manner.
Preferably, the left bearing pair assembly 01 and the right bearing pair assembly 02 are back-to-back bearing pair assemblies.
Preferably, the axial lengths of the four cylindrical surfaces of the outer frame left positioning cylindrical surface 03, the inner frame left positioning cylindrical surface 04, the inner frame right positioning cylindrical surface 05 and the outer frame right positioning cylindrical surface 06 are smaller than a preset threshold value relative to the diameters of the four positioning planes of the outer frame left positioning plane 07, the inner frame left positioning plane 08, the inner frame right positioning plane 11 and the outer frame right positioning plane 12; the cylindricity of the four cylindrical surfaces and the flatness of the four locating planes are higher than a preset threshold value.
The invention also provides an assembly and adjustment method for inhibiting the shafting structure, wherein the positioning characteristics of the left end of the outer frame 09 are a cylindrical positioning surface 03 and an outer frame left positioning plane 07, and the positioning characteristics of the right end of the outer frame 09 are a cylindrical positioning surface 06 and an outer frame right positioning plane 12; making a perpendicular line perpendicular to the outer frame left positioning plane 07 through the center OA of the cylindrical positioning surface 03, and crossing the outer frame right positioning plane 12 to a point PA; similarly, a perpendicular line perpendicular to the outer frame right positioning plane 12 is made through a circle center OD of the cylindrical positioning surface 06, the outer frame left positioning plane 07 is crossed at a PD point, the straight line OAPA is a revolution axis generated by a left end positioning feature, the straight line ODPD is a revolution axis generated by a right end positioning feature, and the straight line OAPA, the straight line ODPD and the straight line OAOD are not superposed in a normal situation, so that the straight line OAPA and the straight line ODPD alternately generate force when the shafting rotates for one circle, and a high-order inclination error of the shafting is further caused, and the inclination error is an inclination revolution error;
the adjustment process for inhibiting the inclination angle rotation error is to make three lines of the straight line OAPA, the straight line ODPD and the straight line OAOD coincide; the debugging method comprises the following steps: firstly, adjusting the angle of the outer frame left positioning plane 07 to further change the angle of a straight line OAPA, so that a point PA is coincided with a point OD; second step) adjusting the angle of the outer frame right positioning plane 12, and further changing the angle of the straight line ODPD so that the point PD coincides with the point OA; thirdly, adjusting the left positioning plane 08 of the inner frame, and adjusting the inner frame 10 in the same way as the first step; fourthly, adjusting the right positioning plane 11 of the inner frame, and adjusting the inner frame 10 in the same way as the second step;
preferably, the change range of the indication value of the dial indicator 15 is read four times in total in the four steps, when the change range of the indication value of the dial indicator 15 is smaller than 0.1mm, the corresponding positioning plane is not adjusted, when the adjustment of the second step is performed, the change range of the indication value of the dial indicator 15 is 0.15mm, the distance between the point OA and the point OD is d (OA, OD), the included angle between the straight line OAOD and the straight line PDOD is recorded as θ, θ is the value of the angle to be adjusted, and the angle to be adjusted of the outer frame right positioning plane 12 is recorded as
The variation range of the indication value of the dial indicator 15 is less than 0.1mm when the measurement in the first step, the third step and the fourth step is carried out.
Preferably, the angle θ of the outer frame right positioning plane 12 is adjusted, so that the point PD coincides with the point OA, and the specific adjustment methods are two methods: 1) the upper end of the pad positioning plane 12 is rotated by an angle theta around the point F at the lower end to a new position 14; 2) and grinding the lower end of the positioning plane 12 to enable the positioning plane to rotate around the upper end E by an angle theta to a new position 13.
Preferably, the distance d (OA, PD) between the point OA and the point PD is measured by the dial indicator 15 by firstly mounting the right end bearing pair assembly 02 on the positioning plane 12 of the outer frame 09, fixing the right shaft 20 to the fixing block 16, so that the outer frame 09 can rotate around the right shaft 20, and measuring the radial run of the cylindrical positioning surface 03 by the dial indicator 15, wherein the variation range of the indication value of the dial indicator 15 is 2d (OA, PD).
Preferably, the fifth step is further included, the axial gaps of the four parts of the left end bearing pair assembly 01, the right end bearing pair assembly 02, the outer frame 09 and the inner frame 10 of the shafting structure are adjusted.
(III) advantageous effects
The method has the advantages that the steps are clear, the dependence on the assembly and adjustment experience of operators is reduced, the method has the completeness characteristic, the assembly and processing errors can be effectively inhibited according to the method, and further the inclination angle rotation errors of the two-end supporting shaft system structures are effectively inhibited.
Drawings
FIG. 1 is a model of a two-end support shafting structure according to the present invention;
FIG. 2 is a schematic diagram of the error factor of the outer frame of the present invention;
FIG. 3 is a schematic view of adjusting the angle of the right positioning plane of the outer frame according to the present invention;
FIG. 4 is a schematic diagram of a method for measuring the distance between the point OA and the point PD in the present invention.
01, a left end bearing pair component; 02. a right end bearing pair assembly; 03. a left positioning cylindrical surface of the outer frame; 04. a left positioning cylindrical surface of the inner frame; 05. a right positioning cylindrical surface of the inner frame; 06. a right positioning cylindrical surface of the outer frame; 07. a left positioning plane of the outer frame; 08. a left inner frame positioning plane; 09. an outer frame; 10. an inner frame; 11. a right inner frame positioning plane; 12. a right positioning plane of the outer frame; 18. a left bearing seat; 19. a left shaft; 20. a right shaft; 21. a right bearing seat; 15. a dial indicator; 16. and (5) fixing blocks.
Detailed Description
In order to make the objects, contents, and advantages of the present invention clearer, the following detailed description of the embodiments of the present invention will be made in conjunction with the accompanying drawings and examples.
The concept and the test method of the inclination angle gyration error are shown in GJB 1801 & lt inertia technology test equipment main performance test method & gt.
The model of the two-end supporting shafting structure designed by the invention is shown in figure 1, and the shafting structure consists of four necessary parts, namely a left-end bearing pair component 01, a right-end bearing pair component 02, an outer frame 09 and an inner frame 10.
The left end bearing pair component 01 consists of a left bearing seat 18, a left shaft 19 and a backrest bearing pair; the right end bearing pair component 02 consists of a right bearing seat 21, a right shaft 20 and a back-to-back bearing pair; the outer frame 09 is assembled with the left bearing seat 18 at the left end, and an outer frame left positioning plane 07 and an outer frame left positioning cylindrical surface 03 are arranged on the mounting reference of the outer frame 09; the inner frame 10 and the left shaft 19 are assembled at the left end, and an inner frame left positioning plane 08 and an inner frame left positioning cylindrical surface 04 are arranged on the assembly reference of the inner frame 10; the outer frame 09 is assembled with the right bearing seat 21 at the right end, and the assembly reference of the outer frame 09 is an outer frame right positioning plane 12 and an outer frame right positioning cylindrical surface 06; the inner frame 10 and the right shaft 20 are assembled at the right end, and the assembling reference of the inner frame 10 is an inner frame right positioning plane 11 and an inner frame right positioning cylindrical surface 05.
The two-end supporting shafting structure model has the following six characteristics: 1) the supporting shaft systems at the two ends have certain span, namely, a left positioning plane 07 and a right positioning plane 12 of the outer frame 09 have certain distance; and the left positioning plane 08 of the inner frame 10 is spaced from the right positioning plane 11. 2) The left bearing seat 18, the left shaft 19, the right bearing seat 21 and the right shaft 20 are made by one-time clamping on a machine tool, the form and position tolerance is very high, and the repair is not needed during the assembly and adjustment. 3) The left bearing pair assembly 01 and the right bearing pair assembly 02 are back-to-back bearing pair assemblies and are slightly or moderately pre-tightened, so that bearing gaps are eliminated. 4) The axial lengths of the four cylindrical surfaces, namely the outer frame left positioning cylindrical surface 03, the inner frame left positioning cylindrical surface 04, the inner frame right positioning cylindrical surface 05 and the outer frame right positioning cylindrical surface 06, are short enough relative to the diameters of the four positioning planes, namely the outer frame left positioning plane 07, the inner frame left positioning plane 08, the inner frame right positioning plane 11 and the outer frame right positioning plane 12, so that the four cylindrical surfaces only limit the positions of four circle centers in the positioning function of the two-end support shafting structure, and the limiting effect of the cylindrical surfaces to the axial direction can be ignored. 5) The cylindricity of the four cylindrical surfaces and the flatness of the four locating planes are sufficiently high. 6) The bearings are sufficiently precise. In view of six characteristics of the two-end supporting shafting structure model, the adjustment work for inhibiting the inclination angle rotation error of the two-end supporting shafting structure is carried out on the positioning characteristics of the outer frame 09 and the inner frame 10.
The positioning features of the outer frame 09 and the inner frame 10 are the same, so only the outer frame 09 is taken as an example for explanation, see fig. 2. The positioning feature of the left end of the outer frame 09 is a cylindrical positioning surface 03 and a positioning plane 07. The positioning features at the right end of the outer frame 09 are a cylindrical positioning surface 06 and a positioning plane 12. Making a perpendicular line perpendicular to the positioning plane 07 through the center OA of the cylindrical positioning surface 03, and intersecting the positioning plane 12 at a point PA; similarly, a perpendicular line perpendicular to the positioning plane 12 is made through the center OD of the cylindrical positioning surface 06, and intersects the positioning plane 07 at the PD point. The straight line OAPA is a revolution axis generated by the left end positioning feature, the straight line ODPD is a revolution axis generated by the right end positioning feature, and the straight line OAPA, the straight line ODPD and the straight line OAOD do not coincide in three lines under normal conditions, so that the straight line OAPA and the straight line ODPD alternately generate force when the shafting rotates for one circle, and further high-order inclination angle errors of the shafting are caused, and the inclination angle errors are the inclination angle revolution errors. The adjustment process for inhibiting the inclination angle rotation error is to enable the three lines of the straight line OAPA, the straight line ODPD and the straight line OAOD to coincide. Wherein, the point OA is the intersection point of the axis of the outer frame left positioning cylindrical surface 03 and the outer frame left positioning plane 07; the point PA is the intersection point of a straight line passing through the point OA and perpendicular to the outer frame left positioning plane 07 and the outer frame right positioning plane 12; the point OD is the intersection point of the axis of the outer frame right positioning cylindrical surface 06 and the outer frame right positioning plane 12; the point PD is the intersection point of a straight line passing through the point OD and perpendicular to the outer frame right positioning plane 12 and the outer frame left positioning plane 07;
in this embodiment, the distance between the outer frame left positioning plane 07 and the outer frame right positioning plane 12 is 257.5 mm; the distance between the inner frame left positioning plane 08 and the inner frame right positioning plane 11 is 210 mm. The left end bearing pair assembly 01 and the right end bearing pair assembly 02 are angular contact ball bearings used in pairs, and the bearings are subjected to selected moderate pre-tightening when leaving a factory. The left bearing seat 18, the left shaft 19, the right bearing seat 21 and the right shaft 20 are matched with the bearing, and the clearance is controlled between 0.005mm and 0.008 mm. The axial lengths of the outer frame left positioning cylindrical surface 03, the inner frame left positioning cylindrical surface 04, the inner frame right positioning cylindrical surface 05 and the outer frame right positioning cylindrical surface 06 are respectively 3mm, 4mm and 7 mm; the diameters of the outer frame left positioning plane 07, the inner frame left positioning plane 08, the inner frame right positioning plane 11 and the outer frame right positioning plane 12 are 146mm, 50mm and 166mm respectively; the axial length of the outer frame left positioning cylindrical surface 03, the inner frame left positioning cylindrical surface 04, the inner frame right positioning cylindrical surface 05 and the outer frame right positioning cylindrical surface 06 is sufficiently short relative to the diameter of the outer frame left positioning plane 07, the inner frame left positioning plane 08, the inner frame right positioning plane 11 and the outer frame right positioning plane 12.
As shown in fig. 2, the adjusting method for suppressing the inclination angle gyration error of the two-end support shafting structure model provided by the invention comprises the following five steps: first step) adjusting the angle of the outer frame left positioning plane 07, and further changing the angle of the straight line OAPA so that the point PA coincides with the point OD; second step) adjusting the angle of the outer frame right positioning plane 12, and further changing the angle of the straight line ODPD so that the point PD coincides with the point OA; third step) adjusting the inner frame left positioning plane 08, and performing the same adjustment as in the first step) on the inner frame 10; the fourth step) adjusting the inner frame right positioning plane 11, and performing the same adjustment on the inner frame 10 as in the second step); taking the second step as an example, the distance d (OA, PD) between the point OA and the point PD can be measured by a dial gauge, as shown in fig. 4. The four-step adjustment described above requires four times of reading the change range of the indication value of the dial indicator 15 in total, and in the present embodiment, when the change range of the indication value of the dial indicator 15 is less than 0.1mm, no adjustment is made for the corresponding positioning plane. When the second step of adjustment is performed, the indication value change range of the dial indicator 15 is 0.15mm, the distance between the point OA and the point OD is d (OA, OD) ═ 0.075mm, the included angle between the straight line OAOD and the straight line PDOD is recorded as θ, θ is the angle value to be adjusted, and the angle to be adjusted of the outer frame right positioning plane 12 is recorded as
The amount of padding needed as shown in fig. 3 at point E is 166 × 0.000291 ═ 0.048 mm.
The change range of the indication value of the dial indicator 15 is less than 0.1mm when the measurement of the first step, the third step and the fourth step is carried out, so that the corresponding positioning plane is not adjusted.
The first four steps of the adjustment method are completely identical, and the second step is taken as an example for illustration, see fig. 3, i.e. the angle of the positioning plane 12 of the outer frame 09 is adjusted, and the angle of the straight line ODPD is changed, so that the point PD coincides with the point OA.
Adjusting the angle of the outer frame 09 positioning plane 12 to be theta, and then coinciding the point PD with the point OA, wherein the specific adjusting methods are two, 1) the upper end of the positioning plane 12 is cushioned to rotate the theta angle around the point F at the lower end to a new position 14, and the target position of the positioning plane 12 is positioned when the cushioning adjusting mode is adopted for 14; 2) and grinding the lower end of the positioning plane 12 to enable the positioning plane to rotate around the upper end E by an angle theta to a new position 13. 13, positioning the target position of the plane 12 when a grinding adjustment mode is adopted;
the distance d (OA, OD) between the point OA and the point OD is a design value and is not required to be measured, and the distance d (OA, PD) between the point OA and the point PD can be measured by a dial indicator, and the method is shown in fig. 4. Firstly, the right end bearing pair assembly 02 is installed on the positioning plane 12 of the outer frame 09, the right shaft 20 is fixed on the fixed block 16, the outer frame 09 can rotate around the right shaft 20, the radial run of the cylindrical positioning surface 03 is measured by the dial indicator 15, and the change range of the indication value of the dial indicator 15 is 2d (OA, PD).
And fifthly, adjusting the axial clearance of four necessary parts of the left end bearing pair component 01, the right end bearing pair component 02, the outer frame 09 and the inner frame 10 of the shafting structure. The left locating plane 08 of the inner frame 10 was measured to be padded up to 0.2 mm. After the first four steps are completed, the outer frame 09, the right end bearing pair assembly 02 and the inner frame 10 are assembled, the distance between the left positioning plane 07 of the outer frame 09 and the left positioning plane 08 of the inner frame 10 is measured, the distance between the positioning planes of the left end bearing assembly 01 corresponding to the two positioning planes is measured, and then the left positioning plane 07 of the outer frame 09 or the left positioning plane 08 of the inner frame 10 is repaired, so that the distance values measured in the two times are equal.
Therefore, the adjustment of the inclination angle rotation error of the two-end supporting shafting structure is suppressed, the final inclination angle rotation error measurement shows that the shafting inclination angle rotation error is 4' in the embodiment, and the precision shafting adjustment index expectation in the embodiment is achieved.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (5)
1. A method for restraining the installation and adjustment of a two-end supporting shaft system structure comprises a left-end bearing pair assembly (01), a right-end bearing pair assembly (02), an outer frame (09) and an inner frame (10);
the left end bearing pair assembly (01) is composed of a left bearing seat (18), a left shaft (19) and a backrest bearing pair; the right end bearing pair component (02) is composed of a right bearing seat (21), a right shaft (20) and a backrest bearing pair; the outer frame (09) and the left bearing seat (18) are assembled at the left end, and an outer frame left positioning plane (07) and an outer frame left positioning cylindrical surface (03) are arranged on the mounting reference of the outer frame (09); the inner frame (10) and the left shaft (19) are assembled at the left end, and an inner frame left positioning plane (08) and an inner frame left positioning cylindrical surface (04) are arranged on the assembly reference of the inner frame (10); the outer frame (09) and the right bearing seat (21) are assembled at the right end, and the assembly reference of the outer frame (09) is provided with an outer frame right positioning plane (12) and an outer frame right positioning cylindrical surface (06); the inner frame (10) and the right shaft (20) are assembled at the right end, and the assembling reference of the inner frame (10) is provided with an inner frame right positioning plane (11) and an inner frame right positioning cylindrical surface (05);
the positioning characteristics of the left end of the outer frame (09) are a cylindrical positioning surface (03) and an outer frame left positioning plane (07), and the positioning characteristics of the right end of the outer frame (09) are a cylindrical positioning surface (06) and an outer frame right positioning plane (12); making a perpendicular line perpendicular to the outer frame left positioning plane (07) through the center OA of the cylindrical positioning surface (03), and crossing the outer frame right positioning plane (12) to a point PA; similarly, a perpendicular line perpendicular to the outer frame right positioning plane (12) is made through a circle center OD of the cylindrical positioning surface (06), the outer frame left positioning plane (07) is crossed to a PD point, the straight line OAPA is a revolution axis generated by the left end positioning feature, the straight line ODPD is a revolution axis generated by the right end positioning feature, and the straight line OAPA, the straight line ODPD and the straight line OAOD do not coincide in a three-line mode under normal conditions, so that the straight line OAPA and the straight line ODPD alternately generate force when the shafting rotates for one circle, and high-order inclination angle errors of the shafting are further caused, and the inclination angle errors are inclination angle revolution errors;
the adjustment process for inhibiting the inclination angle rotation error is to make three lines of the straight line OAPA, the straight line ODPD and the straight line OAOD coincide; the debugging method comprises the following steps: firstly, adjusting the angle of a left positioning plane (07) of the outer frame, and further changing the angle of a straight line OAPA to enable a point PA to coincide with a point OD; secondly, adjusting the angle of the outer frame right positioning plane (12), and further changing the angle of the straight line ODPD to enable the point PD to coincide with the point OA; thirdly, adjusting the left positioning plane (08) of the inner frame, and adjusting the inner frame (10) in the same way as the first step; and fourthly, adjusting the right positioning plane (11) of the inner frame, and adjusting the inner frame (10) in the same way as the second step.
2. The fitting method according to claim 1, wherein the four steps require four times of reading the variation range of the indication value of the dial indicator (15) in total, the variation range of the indication value of the dial indicator (15) is not adjusted for the corresponding positioning plane when the variation range of the indication value of the dial indicator (15) is less than 0.1mm, the variation range of the indication value of the dial indicator (15) is 0.15mm when the second step of adjustment is performed, the distance between the point OA and the point OD is d (OA, OD), the included angle between the straight line OAOD and the straight line PDOD is recorded as θ, θ is the angle value to be adjusted, and the angle to be adjusted of the outer frame right positioning plane (12) is recorded as
3. The adjustment method according to claim 1, wherein the angle θ of the right positioning plane (12) of the outer frame is adjusted so that the point PD coincides with the point OA, and the adjustment method includes two methods: 1) positioning the upper end of the plane (12) to rotate the plane to a new position (14) by an angle theta around a point F at the lower end; 2) and grinding the lower end of the positioning plane (12) to enable the positioning plane to rotate around the upper end E point by an angle theta to a new position (13).
4. The fitting method according to claim 1, wherein the distance d (OA, PD) between the point OA and the point PD is measured by a dial gauge (15) by first mounting the right end bearing pair assembly (02) on the positioning plane (12) of the outer frame (09), fixing the right shaft (20) to the fixing block (16) so that the outer frame (09) can rotate around the right shaft (20), and measuring the radial run of the cylindrical positioning surface (03) by the dial gauge (15), wherein the variation range of the representation value of the dial gauge (15) is 2d (OA, PD).
5. The assembly and adjustment method according to claim 1, further comprising a fifth step of adjusting axial clearances of four parts of the left bearing pair assembly (01), the right bearing pair assembly (02), the outer frame (09) and the inner frame (10) of the shafting structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| EP0824907A1 (en) * | 1996-08-21 | 1998-02-25 | Meyra Wilhelm Meyer Gmbh & Co. Kg | Device for adjusting the camber of wheelchairs |
| CN100507493C (en) * | 2006-01-13 | 2009-07-01 | 浙江大学 | Three-dimensional simulation turntable for miniature unmanned helicopter flight attitude |
| CN202547589U (en) * | 2012-03-23 | 2012-11-21 | 合肥工业大学 | Precise ball hinge gap measuring instrument |
| CN203349773U (en) * | 2013-07-09 | 2013-12-18 | 中国工程物理研究院总体工程研究所 | Testing device for radial revolution error and inclination angle revolution error of main shaft of precise centrifuge |
| WO2015090880A1 (en) * | 2013-12-18 | 2015-06-25 | Magna Powertrain Bad Homburg GmbH | Refrigerant compressor |
| CN105889335A (en) * | 2016-06-27 | 2016-08-24 | 九江精密测试技术研究所 | Power conversion device on basis of electromagnetic clutches |
| CN106352846B (en) * | 2016-08-22 | 2018-08-28 | 中国科学院西安光学精密机械研究所 | Method for testing inclination angle rotation error |
| CN107356222B (en) * | 2017-07-27 | 2019-06-14 | 合肥工业大学 | Five-point cylindricity error separation measurement method |
| CN111076746B (en) * | 2019-12-06 | 2024-06-04 | 九江冠成仿真技术有限公司 | Triaxial manual non-magnetic rotary table |
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