CN117053877B - Pretightening force loading and adjusting device and loading and adjusting method for axial load shafting end cover - Google Patents
Pretightening force loading and adjusting device and loading and adjusting method for axial load shafting end cover Download PDFInfo
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- CN117053877B CN117053877B CN202311321702.5A CN202311321702A CN117053877B CN 117053877 B CN117053877 B CN 117053877B CN 202311321702 A CN202311321702 A CN 202311321702A CN 117053877 B CN117053877 B CN 117053877B
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 27
- 239000010959 steel Substances 0.000 claims abstract description 27
- 238000012544 monitoring process Methods 0.000 claims abstract 2
- 238000001514 detection method Methods 0.000 claims description 11
- 230000036316 preload Effects 0.000 claims description 11
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 239000004579 marble Substances 0.000 claims description 3
- 238000012360 testing method Methods 0.000 claims description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011895 specific detection Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/04—Bearings
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The invention relates to a pre-tightening force loading and adjusting device and a loading and adjusting method for an axial load shafting end cover, and belongs to the technical field of bearing auxiliary assembly. The technical problem that the thickness of the end cover can not be known by empirical repair and grinding is solved. The device comprises the following components in sequence from bottom to top: the device comprises a bearing inner ring supporting tool, a shafting, an end cover pre-tightening bearing inner ring tool, a pressure sensor, a steel ball V-shaped seat, a steel ball and a screw rod sliding block assembly. The invention aims at utilizing the height of the shaft end cover to finish the fixed-pressure pre-tightening of the selected angular contact bearing shaft system, ensures that the shaft system is used under the condition of 500N pre-tightening force, can fully rotate the shaft system while realizing the real-time monitoring of the axial pre-tightening force, and can finish the assembly of the shaft end cover intuitively, accurately and quickly by properly fine-adjusting the pre-tightening force in real time according to the smooth rotation of the shaft system. The axial load bearing device can be used for carrying out experimental exploration on the rotation condition of the shafting under different pretightening forces and detecting the actual axial load born by the shafting.
Description
Technical Field
The invention relates to the technical field of bearing auxiliary assembly, in particular to a pre-tightening force loading and adjusting device and a loading and adjusting method of an axial load shafting end cover.
Background
The bearing end cover with the axial load is the last step of the assembly of the whole shafting, and is one of the most important steps in guaranteeing the assembly precision of the shafting. For the bearing with larger axial load such as the angular contact bearing, the pretightening force of the shaft end cover plays a vital role on the motion precision of the bearing and the whole shaft system, and when the pretightening force is insufficient and the axial load is larger, the play between the bearing or the space ring cannot be eliminated, so that the shaft system shakes, the service life of the bearing is shortened, and the motion precision of the whole shaft system cannot meet the requirement; the bearing generates large heat during working due to the fact that the pretightening force is large, so that the service life of the bearing is reduced, a clamping point exists in the rotation process, and the rotation precision of a shaft system is reduced; and if the pretightening force is too large, the bearing is blocked, and the shafting cannot rotate.
In order to have enough pretightening force when the bearing end cover is installed, the traditional mode is to repair and grind the thickness of the end cover according to past experience by having enough assembly experience master, so as to achieve the aim of compacting the bearing. The most similar scheme (chinese patent document 201810028141.2) is: and installing the back surface of the angular contact bearing on a specific detection boss upwards, wherein the width of the inner ring is equal to the step width of the detection boss, then applying uniform axial pressure on the back surface of the angular contact bearing, finally releasing the pressure, measuring the height difference between the outer ring and the inner ring according to the self weight of the outer ring, and filling the pretightening force of the bearing by using an adjusting pad during assembly. In the prior art, the mode of repairing and grinding the thickness of the end cover by experience cannot know the magnitude of the pre-tightening force actually applied.
At present, the work of controlling the paired assembly clearance of the angular contact bearing is suitable for providing axial clearance parameters in factory detection, and in actual assembly, the shaft system pre-tightening work is completed by repairing and grinding the height difference of the shaft end cover, and no scheme for assembling and adjusting the height of the shaft end cover in actual assembly exists in the prior art.
Disclosure of Invention
The invention aims to solve the technical problems in the prior art and provides a pre-tightening force loading and adjusting device and a loading and adjusting method for an axial load shafting end cover.
In order to solve the technical problems, the technical scheme of the invention is as follows:
the device is transferred in loading of pretightning force of axial load shafting end cover, from bottom to top includes in proper order: the device comprises a bearing inner ring supporting tool, a shafting, an end cover pre-tightening bearing inner ring tool, a pressure sensor, a steel ball V-shaped seat, a steel ball and a screw rod sliding block assembly;
the screw rod sliding block assembly is fixed on the pre-tightening force bracket; the upper end face of the steel ball is contacted with the end face of the screw rod sliding block assembly; the lower end face of the steel ball is tangent to the V-shaped seat of the steel ball; the base surface of the steel ball V-shaped seat is in contact with the sensing end surface of the pressure sensor, and the steel ball V-shaped seat is in clearance fit with the inner shaft of the pressure sensor; the pressure sensor is matched and connected with the end cover pre-tightening bearing inner ring tooling; the end cover pre-tightening bearing inner ring tooling is pressed on the upper end face of the bearing inner ring of the shafting; the bearing inner ring supporting tool is supported on the lower end face of the angular contact bearing inner ring in the shafting;
the bearing inner ring in the shafting is pressed down by the end cover pre-tightening bearing inner ring tool and the bearing inner ring supporting tool, so that the inner ring of the shafting is fixed, the outer ring rotates, and whether the shafting has a clamping point problem in the pre-tightening force loading process can be judged through rotating the shafting outer ring.
In the technical scheme, the pretightening force bracket is fixed on the plane of the marble table.
In the technical scheme, after the enough pre-tightening force is loaded, the measuring instrument can measure the height difference from the end face of the angular contact bearing inner ring to the mounting face of the bearing end cover through the detection port reserved by the end cover pre-tightening bearing inner ring tool.
In the above technical scheme, the measuring instrument is: dial gauge, height difference gauge or coordinate measuring machine.
According to the technical scheme, the pre-tightening force is loaded on the end face of the pressure sensor in the vertical direction, the pre-tightening force loading value is measured and displayed in real time through the pressure sensor, and the pressure is uniformly conducted to the end face of the angular contact bearing.
The loading adjustment method of the pretightening force loading adjustment device of the axial load shafting end cover comprises the following steps:
after a certain axial force is applied to the end cover pre-tightening bearing inner ring tooling and the bearing inner ring supporting tooling, the axial force is removed, and the height difference h from the bearing inner ring to the shaft end cover mounting end face is accurately measured through a detection port reserved by the end cover pre-tightening bearing inner ring tooling 1 The method comprises the steps of carrying out a first treatment on the surface of the The rotating shaft system measures the height difference of a plurality of points;
the screw rod is rotated to apply axial force and the screw rod is openedThe pressure sensor monitors the magnitude of the axial force; when the applied axial force reaches 500N, rotating the shafting, and testing whether the shafting has a stuck point problem in the rotating process; if the shaft system rotates smoothly, the height difference h from the bearing inner ring to the shaft end cover mounting end face is accurately measured through a detection port reserved by the end cover pre-tightening bearing inner ring tool 2 The method comprises the steps of carrying out a first treatment on the surface of the The rotating shaft system measures the height difference of a plurality of points;
h 2 and h 1 The maximum value in a plurality of groups of measured values is selected, and h is calculated 2 -h 1 =Δh, where Δh is the axial displacement generated by angular contact under the pre-tightening force, and the magnitude of the pre-tightening force is determined by the bearing play;
according to h 2 The height difference of the shaft end cover is repaired and ground to meet the requirement of the pretightening force of the end cover.
In the above technical scheme, when the rotation axis is measured, the height difference of 4 points is measured in total.
In the technical scheme, the height difference h from the bearing inner ring to the shaft end cover mounting end face is accurately measured 1 And/or accurately measuring the height difference h from the bearing inner ring to the shaft end cover mounting end face 2 The measuring instrument used was: dial gauge, height difference gauge or coordinate measuring machine.
The invention has the following beneficial effects:
according to the preload loading and adjusting device and the loading and adjusting method for the axial load shafting end cover, the fixed pressure preloading is implemented on the selected angular contact bearing shafting by utilizing the height of the shaft end cover, the shafting is ensured to be used under the condition of 500N preload, the axial preload can be monitored in real time, meanwhile, the shafting can be fully rotated, the preload can be properly finely adjusted in real time according to the smoothness of rotation of the shafting, and the assembly of the shaft end cover is more intuitively, accurately and quickly completed. The axial load bearing device can also be used for carrying out experimental exploration on the rotation condition of the shafting under different pretightening forces and detecting the actual axial load born by the shafting.
Drawings
The invention is described in further detail below with reference to the drawings and the detailed description.
Fig. 1 is a schematic cross-sectional view of a 500N pre-tightening tool of a pre-tightening force loading adjusting device of an axial load shafting end cover.
Fig. 2 is an overall schematic diagram of a 500N pre-tightening tool of the pre-tightening force loading adjustment device of the axial load shafting end cover shown in fig. 1.
Reference numerals in the drawings denote:
1-a lead screw slider assembly; 2-steel balls; 3-a steel ball V-shaped seat; 4-a pressure sensor;
5-pre-tightening a bearing inner ring tool by an end cover; 6-measuring instrument; 7-a bearing inner ring supporting tool;
8-shafting; 9-pretightening force bracket.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
The pre-tightening force loading adjustment device of the axial load shafting end cover of the invention, as shown in figures 1 and 2, comprises: the device comprises a screw rod sliding block assembly 1, a steel ball 2, a steel ball V-shaped seat 3, a pressure sensor 4, an end cover pre-tightening bearing inner ring tool 5, a measuring instrument 6, a bearing inner ring supporting tool 7, a shafting 8 and a pre-tightening force bracket 9.
The pre-tightening force support 9 is fixed on a marble table plane, the screw rod sliding block assembly 1 is fixed on the pre-tightening force support 9, the upper end face of the steel ball 2 is in contact with the screw rod end face of the screw rod sliding block assembly 1, quenching treatment is needed on the screw rod end face, the lower end face of the steel ball 2 is tangent to the steel ball V-shaped seat 3, the base face of the steel ball V-shaped seat 3 is in contact with the sensing end face of the pressure sensor 4, the steel ball V-shaped seat 3 is in inner shaft clearance fit with the pressure sensor 4, the pressure sensor 4 is in clearance fit with the end cover pre-tightening bearing inner ring tooling 5, the end cover pre-tightening bearing inner ring tooling 5 is pressed on the inner bearing ring end face of the shafting 8, and the bearing inner ring supporting tooling 7 is supported on the lower end face of the angular contact bearing inner ring in the shafting 8. The contact end surfaces of all parts of the tool are precisely ground, so that the measurement accuracy is ensured.
In the pre-tightening force loading and adjusting device of the axial load shafting end cover, the lead screw sliding block assembly 1, the steel ball 2 and the steel ball V-shaped seat 3 are respectively contacted in the form of points, lines and planes, the assembly and the assembly are simple and convenient, the partial structural design can ensure that the loading force is loaded on the end surface of the pressure sensor 4 in the vertical direction, and the measuring precision is not influenced if a certain amount of radial play is generated in the subsequent adjustment process; the load preload value is measured and displayed in real time by the pressure sensor 4. After loading enough pre-tightening force, measuring the height difference from the end face of the inner ring of the angular contact bearing to the mounting face of the end cover of the bearing by using a measuring instrument 6 (a dial indicator, a height difference indicator or a coordinate measuring machine (three coordinates)) through a detection port reserved by the end cover pre-tightening bearing inner ring tool 5. The bearing inner ring in the shafting 8 is pressed by the tools 5 and 7, so that the inner ring of the shafting 8 is fixed, the outer ring rotates, and whether the shafting 8 has a clamping point problem in the pretightening force loading process can be judged by rotating the shafting outer ring.
The invention relates to a loading and adjusting method of an axial load shafting end cover pretightening force loading and adjusting device, which belongs to the principle of constant pressure pretightening implemented by a diagonal contact bearing, and comprises the following actual operation steps:
after the assembly is completed, after a certain axial force is applied to the tool, the axial force is removed, the height difference h from the bearing inner ring to the shaft end cover mounting end face is accurately measured by using a measuring instrument 6 through a detection port reserved in the end cover pre-tightening bearing inner ring tool 5 1 The rotating shaft system 8 measures the height difference of 4 points; the operation ensures that the angular contact bearings abut against each other between the bearing-spacer-bearing-mounting end surfaces after the back-to-back paired assembly, and the height difference can be regarded as a height difference generated by the angular contact bearings under the dead weight.
The axial force is applied to the rotating screw rod, the magnitude of the axial force is monitored through the pressure sensor 4, when the applied axial force reaches 500N, the shafting 8 is rotated, whether the problem of stuck points exists in the rotation process of the shafting 8 is tested, and the magnitude of the pretightening force is regulated according to the actual rotation condition. If the shaft system 8 rotates smoothly, the height difference h from the bearing inner ring to the shaft end cover mounting end face is accurately measured by using the measuring instrument 6 through the detection port reserved by the end cover pre-tightening bearing inner ring tool 5 2 The rotating shaft system 8 measures the height difference of 4 points, and the height difference is the height difference after the bearing generates axial displacement under 500N pretightening force.
h 2 And h 1 The maximum value in 4 groups of measured values is selected, and h is calculated 2 -h 1 =Δh, Δh is the pre-setThe axial displacement generated by angular contact under the tightening force can determine whether the pre-tightening force is too large or too small through the bearing clearance provided by the bearing factory parameters. According to h 2max Value (h) 2 The maximum value of (2) the height difference of the shaft end cover is repaired and ground, and the requirement of the pretightening force of the end cover can be met.
According to the preload loading and adjusting device and the loading and adjusting method for the axial load shafting end cover, the fixed pressure preloading is implemented on the selected angular contact bearing shafting by utilizing the height of the shaft end cover, the shafting is ensured to be used under the condition of 500N preload, the axial preload can be monitored in real time, meanwhile, the shafting can be fully rotated, the preload can be properly finely adjusted in real time according to the smoothness of rotation of the shafting, and the assembly of the shaft end cover is more intuitively, accurately and quickly completed. The axial load bearing device can also be used for carrying out experimental exploration on the rotation condition of the shafting under different pretightening forces and detecting the actual axial load born by the shafting.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.
Claims (3)
1. The utility model provides a device is transferred in pretightning force loading of axial load shafting end cover which characterized in that includes from bottom to top in proper order: the device comprises a bearing inner ring supporting tool (7), a shafting (8), an end cover pre-tightening bearing inner ring tool (5), a pressure sensor (4), a steel ball V-shaped seat (3), a steel ball (2) and a screw rod sliding block assembly (1);
the screw rod sliding block assembly (1) is fixed on the pre-tightening force bracket (9); the upper end face of the steel ball (2) is in contact with the end face of the screw rod sliding block assembly (1); the lower end surface of the steel ball (2) is tangent to the steel ball V-shaped seat (3); the base surface of the steel ball V-shaped seat (3) is in contact with the sensing end surface of the pressure sensor (4), and the steel ball V-shaped seat (3) is in clearance fit with the inner shaft of the pressure sensor (4); the pressure sensor (4) is connected with the end cover pre-tightening bearing inner ring tool (5) in a matched mode; the end cover pre-tightening bearing inner ring tool (5) is pressed on the upper end face of the bearing inner ring of the shafting (8); the bearing inner ring supporting tool (7) is supported on the lower end face of the angular contact bearing inner ring in the shafting (8);
the bearing inner ring in the shafting (8) is extruded by the end cover pre-tightening bearing inner ring tool (5) and the bearing inner ring supporting tool (7), so that the inner ring of the shafting (8) is fixed, the outer ring rotates, and whether the shafting (8) has a clamping point problem in the pre-tightening force loading process is judged through rotating the outer ring of the shafting (8);
the pretightening force bracket (9) is fixed on the marble table plane;
after loading enough pre-tightening force, a measuring instrument (6) can measure the height difference from the end face of the angular contact bearing inner ring to the mounting face of the bearing end cover through a detection port reserved by the end cover pre-tightening bearing inner ring tool (5);
the pre-tightening force is loaded on the end face of the pressure sensor (4) in the vertical direction, the pre-tightening force value is measured and displayed in real time through the pressure sensor (4), and the pressure is uniformly conducted to the end face of the angular contact bearing.
2. The preload adjustment device for axial load shafting end caps of claim 1, wherein the measuring instrument (6) is: dial gauge, height difference gauge or coordinate measuring machine.
3. A load setting method of a preload setting device for an axial load shafting end cap according to claim 1 or 2, comprising the steps of:
after a certain axial force is applied to the end cover pre-tightening bearing inner ring tool (5) and the bearing inner ring supporting tool (7), the axial force is removed, and the height difference h from the bearing inner ring to the shaft end cover mounting end face is accurately measured through a detection port reserved by the end cover pre-tightening bearing inner ring tool (5) 1 The method comprises the steps of carrying out a first treatment on the surface of the The rotating shaft system (8) measures the height difference of a plurality of points;
the axial force is applied by rotating the screw rod, which is transmitted by a pressure sensor (4) Monitoring the magnitude of the axial force; when the applied axial force reaches 500N, rotating the shafting (8), and testing whether the shafting (8) has a stuck point problem in the rotating process; if the shaft system (8) rotates smoothly, the height difference h from the bearing inner ring to the shaft end cover mounting end face is accurately measured through a detection port reserved by the end cover pre-tightening bearing inner ring tool (5) 2 The method comprises the steps of carrying out a first treatment on the surface of the The rotating shaft system (8) measures the height difference of a plurality of points;
h 2 and h 1 The maximum value in a plurality of groups of measured values is selected, and h is calculated 2 -h 1 =Δh, where Δh is the axial displacement generated by angular contact under the pre-tightening force, and the magnitude of the pre-tightening force is determined by the bearing play;
according to h 2 The height difference of the shaft end cover is repaired and ground to meet the requirement of the pretightening force of the end cover;
when the rotating shaft system (8) is used for measuring, the height difference of 4 points is measured in total;
accurately measuring the height difference h from the bearing inner ring to the shaft end cover mounting end face 1 And/or accurately measuring the height difference h from the bearing inner ring to the shaft end cover mounting end face 2 The measuring instrument (6) used is: dial gauge, height difference gauge or coordinate measuring machine.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311321702.5A CN117053877B (en) | 2023-10-13 | 2023-10-13 | Pretightening force loading and adjusting device and loading and adjusting method for axial load shafting end cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311321702.5A CN117053877B (en) | 2023-10-13 | 2023-10-13 | Pretightening force loading and adjusting device and loading and adjusting method for axial load shafting end cover |
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| Publication Number | Publication Date |
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| CN117053877A CN117053877A (en) | 2023-11-14 |
| CN117053877B true CN117053877B (en) | 2024-01-30 |
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| CN116379981A (en) * | 2023-03-12 | 2023-07-04 | 中国船舶集团有限公司第七〇七研究所 | Angular contact ball bearing protrusion measuring device and measuring method |
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2023
- 2023-10-13 CN CN202311321702.5A patent/CN117053877B/en active Active
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| CN101339000A (en) * | 2008-07-10 | 2009-01-07 | 浙江迪邦达轴承有限公司 | Bearing contact angle and bump volume integrated detector |
| CN201297915Y (en) * | 2008-07-10 | 2009-08-26 | 浙江迪邦达轴承有限公司 | Bearing contact angle and convex amount comprehensive measuring instrument |
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| CN117053877A (en) | 2023-11-14 |
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