CN112097614B - Flexible detection tool for coaxiality of shaft box spring - Google Patents
Flexible detection tool for coaxiality of shaft box spring Download PDFInfo
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- CN112097614B CN112097614B CN202010922022.9A CN202010922022A CN112097614B CN 112097614 B CN112097614 B CN 112097614B CN 202010922022 A CN202010922022 A CN 202010922022A CN 112097614 B CN112097614 B CN 112097614B
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- measuring rod
- box spring
- axle box
- positioning ring
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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
- G01B5/25—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes
- G01B5/252—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes for measuring eccentricity, i.e. lateral shift between two parallel axes
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Abstract
The invention discloses a flexible checking fixture for coaxiality of a shaft box spring, which comprises a base, a rolling bearing, a positioning support, an elastic positioning ring, a magnetic gauge stand, a measuring rod and a dial indicator, wherein the base is provided with a bearing seat; the rolling bearing is stacked on the base, the positioning support is arranged on the rolling bearing, and the elastic positioning ring is sleeved at the bottom of the axle box spring and is embedded on the positioning support together with the axle box spring; the magnetic gauge stand and the base are arranged on the same plane, the dial indicator is arranged on the magnetic gauge stand through a measuring rod, and the dial indicator is abutted against the outer surface of the axle box spring; the detection tool has the advantages that the structure is flexible and adjustable, and the characteristics of the magnetic gauge stand measuring rod such as universality and adjustable length are utilized, so that the detection tool can be flexibly suitable for detecting mandrels with different heights and different outer diameters; the metal block and the rubber belt in the elastic positioning ring are matched to adapt to detection of different specifications; the detection tool is high in detection precision, simple to operate and convenient to use, and the detection efficiency is improved.
Description
Technical Field
The invention belongs to the technical field of detection, and particularly relates to a flexible detection tool for coaxiality of a shaft box spring.
Background
As shown in fig. 6, the journal box spring is a damping element formed by compounding rubber with metal such as an outer sleeve, a partition plate, a mandrel and the like, plays a role in bearing and damping vibration vertically in the running process of a train, and transmits traction load, braking load and transverse guide load. The axle box spring is arranged on a bogie of the railway vehicle, and the cylindrical boss of the mandrel is matched with the axle box body; whether the coaxiality of the bottom and the cylindrical boss of the mandrel meets the assembly requirement or not directly influences whether the axle box spring can be assembled smoothly or not.
In the prior art, a special checking fixture for coaxiality of an axle box spring outer sleeve mandrel, particularly a flexible checking fixture does not exist, and a three-coordinate detection method is required to detect the coaxiality of the axle box spring outer sleeve mandrel, however, the three-coordinate detection method is complex in operation, high in labor intensity, long in time for a measurement process, high in detection cost and not suitable for detection of products produced continuously in batches.
Disclosure of Invention
The invention provides a flexible checking fixture for coaxiality of a shaft box spring, which utilizes the characteristics of the permanence and the length adjustability of a measuring rod of a magnetic gauge stand and is flexibly suitable for detecting mandrels with different heights and different outer diameters; the metal block and the rubber belt in the elastic positioning ring are matched to adapt to the detection of the coaxiality of the axle box springs with different specifications, so that the problems of complexity in the coaxiality detection operation process and long time for the measurement process in the prior art are solved.
The technical scheme adopted by the invention for solving the problems in the prior art is as follows:
the flexible detection tool for the coaxiality of the shaft box spring comprises a base, a rolling bearing, a positioning support, an elastic positioning ring, a magnetic gauge stand, a measuring rod and a dial indicator; the rolling bearing is stacked on the base, the positioning support is arranged on the rolling bearing, and the elastic positioning ring is sleeved at the bottom of the axle box spring and is embedded on the positioning support together with the axle box spring; the magnetic gauge stand and the base are arranged on the same plane, the dial indicator is arranged on the magnetic gauge stand through a measuring rod, and the dial indicator is abutted against the outer surface of the axle box spring; the bottom of the axle box spring comprises a boss used for being sleeved with an elastic positioning ring, and the height of the dial indicator is adjusted according to the actual measurement position of the axle box spring.
Further, detect and can make the axlebox spring more stable set up on the location supports for the axiality of the axlebox spring that adapts to different specifications, the elastic positioning ring is connected in turn by rubber tape and wedge and forms the closed loop, the elastic positioning ring is conical, and the conical elastic positioning ring that is formed by the wedge can be better with the location support accurate positioning.
Furthermore, in order to increase the toughness of the elastic positioning ring and better adapt to journal box springs of different specifications to complete the detection work of the coaxiality of the journal box springs, the rubber belt comprises a first rubber layer, a second rubber layer and a rubber interlayer, the rubber interlayer is used as a key part for providing elastic deformation, and is in arc transition connection with the first rubber layer and the second rubber layer, so that the risk of rubber cracking in the stretching process is reduced; the rubber belt adopts a clearance design, more proper deformation is provided, the clearance space can be flexibly designed according to the actually required deformation, and the deformation is determined by the size range of the product; the rubber belt is located between two wedge blocks, first rubber layer with the second rubber layer closely bonds with two wedge blocks respectively through vulcanization shaping, and rubber is through vulcanizing, and fine and close and stable structure can provide more suitable deflection, agrees with the axiality detection of different specification axle box springs.
Furthermore, the wedge block is made of metal materials, the metal materials are matched with the rubber materials, the wedge block has proper rigidity and proper flexibility, the metal part can provide better positioning and fixing effects, positioning between the axle box spring and the positioning support is more accurate, errors are not generated due to position movement in the axle box spring coaxiality detection process, and accurate positioning of axle box spring outer sleeve sizes of different specifications can be achieved.
Furthermore, the positioning support comprises an upper part and a lower part, the upper part comprises a first groove with an inverted trapezoidal cross section, the lower part is a circular groove, the inner surface of the circular groove of the positioning support is connected with the rolling bearing in a matching way, and the elastic positioning ring is embedded in the first groove; circular recess adaptation antifriction bearing that can be better, and then drive the rotation of location support through antifriction bearing, the trapezoidal first recess of falling can with the effective adaptation of conical elastic positioning ring, make the connection between location support, elastic positioning ring and axle box spring more stable.
Further, for the detection of being applicable to different height, different external diameter dabber axiality in a flexible way, very big improvement examine utensil's application scope, utilize magnetism gauge stand measuring bar ten-thoughtlessly to be directional and length-adjustable's characteristic, the measuring bar includes first measuring bar and second measuring bar, all customizes according to the product size, first measuring bar one end with magnetism gauge stand is connected, first measuring bar with the second measuring bar passes through the adjusting collar and connects, second measuring bar tip pass through the fixed plate with the percentage table is connected.
The working principle of the invention is as follows: at first with the base, antifriction bearing and location support assemble on testing platform in proper order, location support can rotate along with the roll of antifriction bearing ball this moment, locate the axle box spring bottom boss with the elastic locating ring cover, and the axle box spring that will overlap and be equipped with the elastic locating ring sets up stably in location support's first recess, with the magnetism gauge stand, measuring staff and percentage table equipment set up on testing platform, make percentage table syringe needle and axle box spring butt or contact connection, syringe needle axis perpendicular to butt point or contact point place dabber cylinder face tangent plane, the rotation axle box spring, can accomplish the axiality and detect.
The beneficial effects are as follows:
1. the detection tool has the advantages that the structure is flexible and adjustable, and the characteristics of the magnetic gauge stand measuring rod such as universality and adjustable length are utilized, so that the detection tool can be flexibly suitable for detecting mandrels with different heights and different outer diameters;
2. the metal block in the elastic positioning ring is matched with the rubber belt to realize accurate positioning of the jacket sizes of products with different specifications;
3. the characteristics of high rotation precision of the rolling bearing are utilized, the rotation axis is accurately positioned, and the positioning precision is effectively improved. Meanwhile, the sliding friction of the rotation of the product is converted into the rolling friction of the rolling bearing balls, so that the checking fixture has the advantages of good starting performance, reliable work, convenient use and maintenance, effectively reduced labor intensity and improved working efficiency.
Drawings
FIG. 1 is a schematic view of the journal box spring coaxiality detection state in the embodiment 1;
FIG. 2 is a schematic structural view of the flexible testing fixture of the present embodiment;
FIG. 3 is a schematic view of a positioning support structure of the present embodiment;
FIG. 4 is a schematic view of the structure of the elastic positioning ring of the present embodiment;
FIG. 5 is a schematic view of a conical shape of the elastic positioning ring of the present embodiment;
fig. 6 is a schematic view of the axle box spring structure according to the present embodiment.
Detailed Description
The present invention will be further described with reference to the following embodiments.
Example 1
As shown in fig. 1 to 6, the embodiment provides a flexible checking fixture for coaxiality of a shaft box spring, which comprises a base 1, a rolling bearing 2, a positioning support 3, an elastic positioning ring 4, a magnetic gauge stand 5, a measuring rod 6 and a dial indicator 7; the rolling bearing 2 is stacked on the base 1, the positioning support 3 is arranged on the rolling bearing 2, and the elastic positioning ring 4 is sleeved at the bottom of the axle box spring 8 and is embedded on the positioning support 3 together with the axle box spring 8; the magnetic gauge stand 5 and the base 1 are arranged on the same plane, the dial indicator 7 is arranged on the magnetic gauge stand 5 through the measuring rod 6, and the dial indicator 7 is abutted to the outer surface of the axle box spring 8.
As shown in fig. 6, in the present embodiment, the bottom of the axle box spring 8 includes a boss 80 for receiving the elastic positioning ring 4, and the height of the dial indicator 7 is adjusted according to the actual measurement position of the axle box spring 8.
As shown in fig. 1, in this embodiment, the measuring rod 6 includes a first measuring rod 61 and a second measuring rod 62, one end of the first measuring rod 61 is connected with the magnetic gauge stand 5, the first measuring rod 61 is connected with the second measuring rod 62 through an adjusting sleeve 60, and an end of the second measuring rod 62 is connected with the dial indicator 7 through a fixing plate 9.
As shown in fig. 4 and 5, in the present embodiment, the elastic positioning ring 4 is formed by alternately connecting a rubber band 41 and a wedge-shaped block 42 to form a closed loop, and the elastic positioning ring 4 is conical; the rubber belt 41 adopts a clearance design, the rubber belt 41 comprises a first rubber layer 411, a second rubber layer 412 and a rubber interlayer 410, the rubber interlayer 410 is used as a key part for providing elastic deformation and is in arc transition connection with the first rubber layer 411 and the second rubber layer 412, the rubber belt 41 is positioned between the two wedge-shaped blocks 42, and the first rubber layer 411 and the second rubber layer 412 are respectively and tightly bonded with the two wedge-shaped blocks 42 through vulcanization molding; in this embodiment, the wedge 42 is made of a metal material. In this embodiment, conical elastic positioning ring 4 that is formed by wedge 42 can be better with location support 3 pinpoint, rubber is through vulcanizing, compact and stable structure can provide more suitable deflection, agree with different specification axle box spring 8's axiality and detect, and make axle box spring 8 set up more stably on location support 3, adopt metal material and rubber materials's cooperation, can provide better fixed action, make the axle box spring 8 inseparabler with the combination between the location support 3, guarantee not because of position shift and produce the error at the in-process that axle box spring 8 axiality detected.
As shown in fig. 3, in the present embodiment, the positioning support 3 includes an upper portion 31 and a lower portion 32, the upper portion 31 includes a first groove 310 with an inverted trapezoidal cross section, the lower portion 32 is a circular groove 320, the inner surface of the circular groove 320 of the positioning support 3 is in fit connection with the rolling bearing 2, and the elastic positioning ring 4 is embedded in the first groove 310; in this embodiment, circular recess 320 can be better adaptation antifriction bearing 2, and then drives the rotation of location support 3 through antifriction bearing 2, and trapezoidal first recess 310 can with the effective adaptation of conical elastic positioning ring 4, make the connection between location support 3, elastic positioning ring 4 and axle box spring 8 more stable.
The coaxiality detection method of the axle box spring in the embodiment comprises the following steps: firstly with base 1, antifriction bearing 2 and location support 3 assemble on testing platform in proper order, location support 3 can rotate along with the roll of antifriction bearing 2 ball this moment, locate axle box spring 8 bottom boss 80 with the cover of elastic positioning ring 4, and the axle box spring 8 that the cover was equipped with elastic positioning ring 4 stably sets up in the first recess 310 of location support 3, with magnetism gauge stand 5, measuring staff 6 and 7 equipment settings of percentage table are on testing platform, make 7 syringe needles of percentage table and 8 butt of axle box spring, syringe needle axis perpendicular to butt point place dabber cylinder face tangent plane, pivot axle box spring 8, can accomplish axle box spring 8's axiality and detect.
In the embodiment, the detection tool has the advantages that the structure is flexible and adjustable, and the characteristics of the magnetic gauge stand measuring rod such as universality and adjustable length are utilized, so that the detection tool can be flexibly suitable for detecting mandrels with different heights and different outer diameters; the metal block and the rubber belt in the elastic positioning ring are matched to adapt to detection of different specifications; the rolling bearing is utilized to convert the sliding friction of the rotation of the product into the rolling friction of the rolling bearing balls, so that the checking fixture has the advantages of good starting performance, high rotation precision, reliable work, convenient use and maintenance, effectively reduced labor intensity and improved working efficiency.
It should be understood that the above examples are only for clearly illustrating the technical solutions of the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection of the claims of the present invention.
Claims (4)
1. The flexible detection tool for the coaxiality of the shaft box spring is characterized by comprising a base (1), a rolling bearing (2), a positioning support (3), an elastic positioning ring (4), a magnetic gauge stand (5), a measuring rod (6) and a dial indicator (7); the rolling bearing (2) is stacked on the base (1), the positioning support (3) is arranged on the rolling bearing (2), the elastic positioning ring (4) is sleeved at the bottom of the axle box spring (8) and is embedded on the positioning support (3) together with the axle box spring (8); the magnetic gauge stand (5) and the base (1) are arranged on the same plane, the dial indicator (7) is arranged on the magnetic gauge stand (5) through a measuring rod (6), and the dial indicator (7) is abutted to the outer surface of the axle box spring (8); the elastic positioning ring (4) is formed by alternately connecting a rubber belt (41) and a wedge-shaped block (42) to form a closed loop, and the elastic positioning ring (4) is conical; rubber belt (41) adopt and keep away empty design, rubber belt (41) include first rubber layer (411), second rubber layer (412) and rubber interlayer (410), rubber interlayer (410) with adopt circular arc transitional coupling between first rubber layer (411) and second rubber layer (412), rubber belt (41) are located between two wedge blocks (42), first rubber layer (411) with second rubber layer (412) closely bond with two wedge blocks (42) respectively through vulcanizing into the type.
2. The journal spring coaxiality flexibility check tool according to claim 1, wherein the wedge block (42) is a metal material.
3. The journal spring coaxiality flexibility testing fixture according to claim 1, wherein the positioning support (3) comprises an upper portion (31) and a lower portion (32), the upper portion (31) comprises a first groove (310) with an inverted trapezoidal cross section, the lower portion (32) is a circular groove (320), the inner surface of the circular groove (320) of the positioning support (3) is in fit connection with the rolling bearing (2), and the elastic positioning ring (4) is embedded in the first groove (310).
4. The journal spring coaxiality flexibility testing fixture according to claim 1, wherein the measuring rod (6) comprises a first measuring rod (61) and a second measuring rod (62), one end of the first measuring rod (61) is connected with the magnetic gauge stand (5), the first measuring rod (61) is connected with the second measuring rod (62) through an adjusting sleeve (60), and the end of the second measuring rod (62) is connected with the dial indicator (7) through a fixing plate (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010922022.9A CN112097614B (en) | 2020-09-04 | 2020-09-04 | Flexible detection tool for coaxiality of shaft box spring |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010922022.9A CN112097614B (en) | 2020-09-04 | 2020-09-04 | Flexible detection tool for coaxiality of shaft box spring |
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| CN112097614A CN112097614A (en) | 2020-12-18 |
| CN112097614B true CN112097614B (en) | 2022-10-28 |
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| FR2169991B1 (en) * | 1972-02-02 | 1976-05-14 | Beissbarth Osmond | |
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Patent Citations (4)
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|---|---|---|---|---|
| CN102777524A (en) * | 2012-08-06 | 2012-11-14 | 株洲时代新材料科技股份有限公司 | Coupler wedge-shaped rubber block used for railway vehicle |
| CN207577458U (en) * | 2017-12-15 | 2018-07-06 | 黄冈师范学院 | A kind of lathe process thin walled cylinder body special fixture |
| CN108942343A (en) * | 2018-09-30 | 2018-12-07 | 山西华翔集团股份有限公司 | A kind of air-conditioner compressor crankshaft eccentric shaft outer circle novel clamp |
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| CN112097614A (en) | 2020-12-18 |
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