CN103217086A - Form and position tolerance detecting instrument for shaft and sleeve - Google Patents
Form and position tolerance detecting instrument for shaft and sleeve Download PDFInfo
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- CN103217086A CN103217086A CN2013101126708A CN201310112670A CN103217086A CN 103217086 A CN103217086 A CN 103217086A CN 2013101126708 A CN2013101126708 A CN 2013101126708A CN 201310112670 A CN201310112670 A CN 201310112670A CN 103217086 A CN103217086 A CN 103217086A
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Abstract
The invention discloses a form and position tolerance detecting instrument for a part, such as a shaft and a sleeve. The detecting instrument comprises a base and a core shaft which is rotationally arranged in the base through a bearing, wherein a fixing structure used for fixing a reference section of the part to be measured and making the reference section coaxially matched with the core shaft is fixedly arranged on the core shaft; an inner hole of the base is provided with a limit step surface which is leftward and is matched with the bearing in a limit way; the left end of the core shaft extends out of the base, a bearing gland which is matched with the outer ring of the bearing in a compressing way is sleeved on the clearance of the extending part of the core shaft, and adjusting bolts which are peripherally and uniformly distributed along the core shaft are connected between the bearing gland and the base; and an adjusting detection part which is used for detecting the beating degree of the core shaft during a core shaft rotating process through a dial indicator and adjusting the beating degree of the core shaft according to the tightness degree of each adjusting bolt is also arranged on the peripheral surface of the core shaft. While the beating degree of the detected section of the part to be detected in the manner of being relative to the reference section can be detected through the rotation of the core shaft, the influence of the error of the self assembly of the detecting instrument can also be reduced through slight adjustment. The accuracy of detection is improved.
Description
Technical field
The present invention relates to a kind of pick-up unit that is used to detect a class, cover parts form and position tolerance, be specifically related to a kind of form and position tolerance detector.
Background technology
For some axial workpieces, bolt as shown in Figure 1, generally require between its thread segment 71 and the polished rod section 72 or the requirement that has some form and position tolerance between thread segment 71 and the end face, as right alignment, verticality, beating degree etc., and thread segment 71 is as the benchmark section of bolt, and polished rod section 72 is as the detection segment of bolt.Traditional form and position tolerance detection method adopts the mode of projector projection, part is placed under the projector behind the draw outline line, the comparison outline line draws right alignment under two dimension, but this detection only can draw the big footpath of thread segment or the right alignment of path and polished rod section, testing result is more single, and a product needed repeatedly rotates and gets the right alignment maximal value after adopting a little, no matter be on the accuracy that detects or bigger defective is all arranged on the simplicity.
Chinese patent CN201177496Y discloses a kind of rim for automobile wheel right alignment appliance special for detecting, this cubing comprises a pedestal, be rotatably equipped with mandrel by bearing in the pedestal, the periphery of mandrel is arranged with along the circumferential uniform mould lobe of mandrel, each mould lobe surrounds and forms endoporus is frustum, but radial dilatation or flexible tensioner cover, the effect of tensioner cover is sheathed wheel rim tensioner thereon, and the expansion of tensioner cover or the flexible cone table that is set on the mandrel by the gap are realized, one end of cone table is installed with the thread segment nut engaged with mandrel, driving cone table by the rotation nut moves axially and extend in the tensioner cover endoporus along mandrel, rely on cone match just can make tensioner cover spreading with the tensioner wheel rim, wheel rim after the tensioner can rotate with mandrel, radially be fitted in the contact of dial gauge on the wheel rim outer peripheral face this moment, and the beating degree of measuring wheel rim by dial gauge can draw the right alignment of wheel rim.This cubing adopts the mode of tensioner cover tensioner that workpiece is fixed, only be applicable to the detection of the tubular class workpiece that structure is bigger, but axle class or cover parts for minor structure are obviously improper, especially with such part wherein one section detect form and position tolerances such as right alignment between another section and this benchmark section as the benchmark section, this cubing obviously can't satisfy the matching requirements of workpiece; The more important thing is that owing to there is bigger error in the cubing assembling process, influenced by the coaxiality error between workpiece and the mandrel, this error can not be adjusted by cubing self again and dwindle, and directly influences the accuracy that form and position tolerance detects.
Summary of the invention
The purpose of this invention is to provide an a kind of class, cover parts form and position tolerance of being applicable to and detect and detect the little form and position tolerance detector of error.
The present invention adopts following technical scheme: a kind of form and position tolerance detector that is used for a class, cover parts, comprise pedestal and by bearing rotate be assemblied in the pedestal, axis is along the mandrel that left and right directions extends, and is installed with the fixed sturcture that is used for to be measured benchmark section is fixed and made this benchmark section and mandrel coaxial cooperation on the described mandrel; Described pedestal endoporus have towards a left side with the spacing limiting stand terrace that cooperates of described bearing, the left end of mandrel stretches out pedestal and extension gap and is arranged with bearing gland with the bearing outer ring compression fit, be connected with between bearing gland and the pedestal along mandrel circumferentially uniform, in order to the adjusting bolt of bearing press mounting on the limiting stand terrace; Also have on the outer peripheral face of described mandrel and be used for the adjustment test section that detects the mandrel beating degree and come by the tightness that each regulates bolt the mandrel beating degree is adjusted at the mandrel rotary course for dial gauge.
Described fixed sturcture comprise be arranged in the mandrel, be used for the axial through hole that axially inserts for to be measured, axially be provided with in the through hole and be used for locking mechanism that to be measured benchmark section is locked.
Described locking mechanism is the coaxial removable lock sleeve that is installed in the axial through hole, has the internal thread that is used for to be measured benchmark section threaded engagement on the internal face of lock sleeve.
Described locking mechanism is the coaxial removable lock sleeve that is installed in the axial through hole, and the internal face of lock sleeve is provided with along its circumferentially uniform tensioner pawl that is used for to be measured benchmark section clamping engagement.
The right section of described axial through hole is the taper hole section of enlarging towards the right side, and described lock sleeve is the adaptive tapered sleeve that is inserted in the taper hole section, and screw fit has the tightening cover that cooperates with the right-hand member roof pressure of lock sleeve on the right part of mandrel.
Be installed with rotating handles on the left side of described mandrel.
Adopt the form and position tolerance detector of said structure and since mandrel by its fixed sturcture can with the benchmark section of axle class or cover parts directly with the coaxial assembling of mandrel, in the process that mandrel self rotates, realize to be measured synchronous rotation again; The more important thing is, because the left end of pedestal is pressed with the bearing gland that cooperates with the bearing outer ring roof pressure, and bearing gland is by being connected along circumferential uniform set screw and the pedestal of mandrel, the tightness of each set screw directly influences the compress degree of bearing gland to bearing, promptly influence the depth of parallelism of the axis and the reference field of bearing, concrete, bottom surface with pedestal is a reference field, do not consider the error of perpendicularity influence of coaxiality error and the dial gauge contact and the reference field of to be measured benchmark section and mandrel, by regulating the depth of parallelism between to be measured benchmark section and the reference field, can guarantee the verticality between dial gauge contact and to be measured the benchmark section axis.Whole detector can also reduce the error effect of detector self assembling by fine setting when the rotation that relies on mandrel just can be measured the beating degree of to be measured detection segment relative datum section, improved the accuracy that detects.
Description of drawings
Fig. 1 is to be measured a structural representation;
Fig. 2 is the structural representation of a kind of embodiment of the present invention;
Fig. 3 is the inner structure synoptic diagram of pedestal;
Fig. 4 is the left view of Fig. 3.
Embodiment
The embodiment of form and position tolerance detector of the present invention: shown in Fig. 2-4, comprise a pedestal 3, pedestal 3 has the endoporus that axis extends along left and right directions, concentric gap is fitted with mandrel 9 in the pedestal endoporus, be equipped with bearing 8 between mandrel 9 and the pedestal 3, mandrel 9 just can rotate around self axis pedestal 3 in by bearing 8 like this.The pedestal endoporus has the limiting stand terrace towards a left side, bearing 8 is positioned at the macropore section of limited step left side of face, left end at pedestal 3 is pressed with the bearing gland 2 that cooperates with the outer ring roof pressure of bearing 8, be connected with four between bearing gland 2 and the pedestal 3 along the circumferential uniform set screw 1 of pedestal endoporus, so just bearing 8 can be fitted between bearing gland 2 and the limiting stand terrace.The left end projecting shaft pressure cap 2 of mandrel 9 and extension and bearing gland 2 clearance fit; also be provided with the fixed sturcture that to be measured 7 is fixed on the mandrel 9 simultaneously; in the present embodiment; to be measured 7 thread segment is that benchmark section, polished rod section are detection segment, and fixed sturcture fixes and guarantee the right alignment of benchmark section and mandrel 9 to be measured 7 benchmark section.The right alignment of to be measured 7 detection segment relative datum section detects by dial gauge 6 and realizes, state as shown in Figure 2, the contact of dial gauge 6 vertically is pressed on the outer peripheral face of to be measured polished rod section down, mandrel 9 drives to be measured 7 and rotates together, can measure the right alignment of the relative thread segment of polished rod section by the reading of dial gauge 6.
Use in the process of this detector to be measured 7 detection, for the accuracy that guarantees to detect, should detect as benchmark with footpath in to be measured the thread segment, promptly need to guarantee the verticality between dial gauge contact and to be measured the thread segment axis, and the measure that present embodiment is taked is, bottom surface with pedestal 3 is a reference field, do not consider the error of perpendicularity influence of coaxiality error and the dial gauge contact and the reference field of to be measured thread segment and mandrel 9, regulate the depth of parallelism between to be measured thread segment and the reference field by fine setting, can guarantee the verticality between dial gauge contact and to be measured the thread segment axis.Concrete trim process is: earlier with an outer peripheral face part of the left part correspondence of mandrel 9 projecting shaft pressure caps 2 as the adjustment test section, as shown in Figure 2, the contact of dial gauge 6 is vertically withstood on the adjustment test section up, reading by dial gauge 6 is observed the beating degree of mandrel 9 in rotary course, adjust the tightness of four set screw then, beating degree is transferred in 0.005.In the trim process, the tightness of four set screw 1 directly influences the degree that compresses of 2 pairs of bearings 8 of bearing gland, promptly influence the depth of parallelism of the axis and the reference field of bearing 8, and to be measured thread segment and mandrel 9 coaxial assemblings, mandrel 9 again with bearing 8 coaxial assemblings, promptly be adjustment to the adjustment of bearing 8 to be measured thread segment.
Described fixed sturcture comprise be opened on the mandrel 9, along its axially extended axial through hole, axially through hole is used for axially inserting for to be measured 7, and axially through hole is a shoulder hole left large and right small, wherein the right section of aperture section is the frustum hole section of enlarging towards the right side, be provided with locking mechanism in the section of frustum hole, locking mechanism is the adaptive lock sleeve 4 that is inserted into the frustum in the section of frustum hole, and the endoporus of lock sleeve 4 is the threaded hole with to be measured 7 thread segment threaded engagement; Screw fit has the tightening cover 5 that cooperates with the right-hand member roof pressure of lock sleeve 4 on the right part of mandrel 9, can realize lock sleeve 4 and to be measured 7 locking positioning in mandrel 9 like this, and tightening cover 5 also has the through hole that stretches out for to be measured 7 polished rod section simultaneously.
As further optimization, on the left side of mandrel 9, be installed with rotating handles 10, so that the rotary manipulation of mandrel 9.
When the foregoing description is specifically used, before detecting, contact with dial gauge 6 vertically is pressed on the adjustment test section of mandrel 9 up earlier, by 9 rotations of rotating handles 10 operation mandrels, and measure the beating degree of mandrel 9 by dial gauge 6, regulate the tightness of four set screw 1 and observe dial gauge 6, guarantee that beating degree is in 0.005; After adjustment finishes, dial gauge 6 moved to its contact is pressed on to be measured 7 the polished rod section straight down,, directly detect the beating degree of to be measured the relative thread segment of polished rod section with dial gauge 6 by the rotation together that drives to be measured 7 of rotating handles 10 operation mandrels 9.
In other embodiments, also different at the difference of to be measured benchmark segment structure to the fixed sturcture that the benchmark section is fixing, if the benchmark section is the thread bush structure, fixed sturcture then for Tongzhou be installed in the mandrel right-hand member, with the threaded rod of thread bush threaded engagement.
Certainly, in other embodiments, also can lay on the internal face of lock sleeve along its circumferential uniform tensioner pawl, rely on the clamping engagement of tensioner pawl and benchmark section, not only can realize the locking positioning of thread segment, can also realize the locking positioning of polished rod section, can the detection reference section be to be measured form and position tolerance of polished rod section also therefore, improves the usable range of detector.
Certainly, in other embodiments, also can be arranged to threaded hole, and the coaxial assembling that also can realize lock sleeve and mandrel with the external thread of threaded hole threaded engagement is set on the outer peripheral face of lock sleeve in the shoulder hole aperture section, so just do not need to be arranged to the frustum hole, tightening cover can be set yet.
Claims (6)
1. form and position tolerance detector that is used for a class, cover parts, comprise pedestal and by bearing rotate be assemblied in the pedestal, axis is along the mandrel that left and right directions extends, it is characterized in that: be installed with the fixed sturcture that is used for to be measured benchmark section is fixed and made this benchmark section and mandrel coaxial cooperation on the described mandrel; Described pedestal endoporus have towards a left side with the spacing limiting stand terrace that cooperates of described bearing, the left end of mandrel stretches out pedestal and extension gap and is arranged with bearing gland with the bearing outer ring compression fit, be connected with between bearing gland and the pedestal along mandrel circumferentially uniform, in order to the adjusting bolt of bearing press mounting on the limiting stand terrace; Also have on the outer peripheral face of described mandrel and be used for the adjustment test section that detects the mandrel beating degree and come by the tightness that each regulates bolt the mandrel beating degree is adjusted at the mandrel rotary course for dial gauge.
2. the form and position tolerance detector that is used for a class, cover parts according to claim 1, it is characterized in that: described fixed sturcture comprise be arranged in the mandrel, be used for the axial through hole that axially inserts for to be measured, axially be provided with in the through hole and be used for locking mechanism that to be measured benchmark section is locked.
3. the form and position tolerance detector that is used for a class, cover parts according to claim 2, it is characterized in that: described locking mechanism is the coaxial removable lock sleeve that is installed in the axial through hole, has the internal thread that is used for to be measured benchmark section threaded engagement on the internal face of lock sleeve.
4. the form and position tolerance detector that is used for a class, cover parts according to claim 2, it is characterized in that: described locking mechanism is the coaxial removable lock sleeve that is installed in the axial through hole, and the internal face of lock sleeve is provided with along its circumferentially uniform tensioner pawl that is used for to be measured benchmark section clamping engagement.
5. according to claim 3 or the 4 described form and position tolerance detectors that are used for a class, cover parts, it is characterized in that: the right section of described axial through hole is the taper hole section of enlarging towards the right side, described lock sleeve is the adaptive tapered sleeve that is inserted in the taper hole section, and screw fit has the tightening cover that cooperates with the right-hand member roof pressure of lock sleeve on the right part of mandrel.
6. the form and position tolerance detector that is used for a class, cover parts according to claim 1 is characterized in that: be installed with rotating handles on the left side of described mandrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310112670.8A CN103217086B (en) | 2013-04-02 | 2013-04-02 | Form and position tolerance detecting instrument for shaft and sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310112670.8A CN103217086B (en) | 2013-04-02 | 2013-04-02 | Form and position tolerance detecting instrument for shaft and sleeve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103217086A true CN103217086A (en) | 2013-07-24 |
| CN103217086B CN103217086B (en) | 2015-07-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310112670.8A Active CN103217086B (en) | 2013-04-02 | 2013-04-02 | Form and position tolerance detecting instrument for shaft and sleeve |
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| CN (1) | CN103217086B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106903539A (en) * | 2017-04-12 | 2017-06-30 | 沈机集团昆明机床股份有限公司 | For the air plug gauge of engine cylinder-body crankshaft hole positioning |
| CN107144199A (en) * | 2017-06-28 | 2017-09-08 | 中国航发南方工业有限公司 | Screw thread pulsation measuring tool and screw thread axis misalignment measuring method |
| CN107598590A (en) * | 2017-11-02 | 2018-01-19 | 中国航天科技集团公司烽火机械厂 | A kind of accurate frock for processing valve pocket hole and a kind of valve pocket process equipment |
| CN109341486A (en) * | 2018-11-12 | 2019-02-15 | 安徽华旦机械制造有限公司 | A kind of systematization channel bearing Internal and external cycle measuring device and its measurement method |
| CN110657725A (en) * | 2019-08-30 | 2020-01-07 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Circumferential runout measuring device |
| CN112729078A (en) * | 2020-12-18 | 2021-04-30 | 贵州华烽电器有限公司 | Open sleeve internal thread concentricity detection device |
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| CN102914231A (en) * | 2012-09-29 | 2013-02-06 | 无锡市中达电机有限公司 | Form and location tolerance detecting tool for spigot of motor base |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106903539A (en) * | 2017-04-12 | 2017-06-30 | 沈机集团昆明机床股份有限公司 | For the air plug gauge of engine cylinder-body crankshaft hole positioning |
| CN107144199A (en) * | 2017-06-28 | 2017-09-08 | 中国航发南方工业有限公司 | Screw thread pulsation measuring tool and screw thread axis misalignment measuring method |
| CN107598590A (en) * | 2017-11-02 | 2018-01-19 | 中国航天科技集团公司烽火机械厂 | A kind of accurate frock for processing valve pocket hole and a kind of valve pocket process equipment |
| CN107598590B (en) * | 2017-11-02 | 2023-08-25 | 四川航天烽火伺服控制技术有限公司 | Precise tool for machining valve sleeve hole and valve sleeve machining equipment |
| CN109341486A (en) * | 2018-11-12 | 2019-02-15 | 安徽华旦机械制造有限公司 | A kind of systematization channel bearing Internal and external cycle measuring device and its measurement method |
| CN110657725A (en) * | 2019-08-30 | 2020-01-07 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Circumferential runout measuring device |
| CN112729078A (en) * | 2020-12-18 | 2021-04-30 | 贵州华烽电器有限公司 | Open sleeve internal thread concentricity detection device |
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| Publication number | Publication date |
|---|---|
| CN103217086B (en) | 2015-07-15 |
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