CN105043208A - Groove width measuring device - Google Patents
Groove width measuring device Download PDFInfo
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- CN105043208A CN105043208A CN201510457687.6A CN201510457687A CN105043208A CN 105043208 A CN105043208 A CN 105043208A CN 201510457687 A CN201510457687 A CN 201510457687A CN 105043208 A CN105043208 A CN 105043208A
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- handle
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- measurement
- claw
- groove width
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Abstract
The invention discloses a groove width measuring device. The groove width measuring device comprises a measuring handle and a measuring core shaft in guiding movable arrangement in the measuring handle. An elastic component is arranged between the measuring handle and the measuring core shaft. The measuring core shaft is connected with a movable claw extending along the radial direction thereof. The measuring handle is provided with a fixed claw. The fixed claw comprises a connection portion connected with the measuring handle and a measuring portion used cooperatively with the movable claw and extending along the radial direction of the measuring handle. The opposite sides of the measuring portion of the fixed claw and the movable claw are respectively provided with a matching surface in close fit with the corresponding groove wall during measuring. Measurement reference of the measuring device is two groove wall surfaces of an inner ring groove, and the two groove wall surfaces are refined reference surfaces and provide reference to each other. Compared with the prior art, the measuring error is small, and the precision of the measured groove width value is higher.
Description
Technical field
The present invention relates to survey instrument field, be specifically related to a kind of groove width measurement mechanism.
Background technology
In field of machining, some parts are had to need to process inner groove, and higher to the width requirement precision of inner groove.As shown in Figure 1, be existing a kind of structural representation being processed with the part of inner groove, the inner groove 101 of this part 100 is arranged in hole 102.If the hole depth of part is comparatively large, vernier caliper is adopted to be not easy to measure the width of inner groove, or even cannot measure it.
The groove width existed for above-mentioned deep hole inner groove measures difficult problem, Chinese patent CN203349732U (day for announcing is 2013.12.18) discloses deep hole inner groove axial location and groove width survey instrument, this survey instrument stretches into the measurement handle in deep hole when being included in measurement, one end of measurement handle is provided with the mount pad for installing and measuring table.Measure in handle and be provided with the through hole coaxial with it, being slidably matched with it in through hole is set with air plug gauge, and air plug gauge is provided with the shaft shoulder, is provided with the spring be sleeved on air plug gauge between the shaft shoulder and mount pad.Mount pad is provided with meter, and the measuring head of meter is resisted against on the end face on air plug gauge.The periphery wall measuring handle is provided with the groove of sidewall and its axis being parallel, the notch of groove is positioned at measures handle away from the end face of mount pad, measurement handle is divided into by groove measures handle body and measuring claw, and the end of measuring claw is provided with and extends radially outwardly and flange for coordinating with inner groove when measuring.
The measuring process of above-mentioned survey instrument is as follows: pinch measuring claw with hand during measurement, so that measuring claw can enter in deep hole of workpiece, when measuring claw arrives workpiece inner groove, unclamps measuring claw, allows measuring claw be stuck in inner groove.Now air plug gauge under the action of the spring, and its one end away from meter props up at the bottom of the hole of deep hole.Move axially measurement handle, and then drive meter to move relative to air plug gauge, the upper and lower end face of measuring claw contacts with the upper and lower end face of the inner groove of part and obtains two readings, and the difference of these two readings is as the measured value of inner ring groove of part width.In measuring process, no matter be that the upper surface of measuring claw contacts with the upper surface of inner groove or the lower surface of measuring claw contacts with the lower surface of inner groove, the reading obtained all records as benchmark at the bottom of deep hole, and at the bottom of deep hole, be a roughing standard, therefore, it is all values that precision is not high that twice measurement obtains reading, then through the difference of two readings that calculating due to deviation accumulation makes error can be larger, the width value precision of the groove width measured is not high.And this survey instrument is limited to its measuring principle, cause it not measure being in the inner groove width in through hole, through hole can not provide stopping surface for one end away from meter of air plug gauge.
Summary of the invention
The object of the present invention is to provide a kind of groove width measurement mechanism, to solve the large technical matters of existing groove width survey instrument measuring error.
To achieve these goals, groove width measurement mechanism of the present invention adopts following technical scheme: this groove width measurement mechanism comprises to be measured handle and guiding movement and be assemblied in air plug gauge on described measurement handle, elastic component is provided with between described measurement handle and described air plug gauge, described air plug gauge is connected with the movable claw radially extended, described measurement handle is provided with fixed claw, described fixed claw comprise the connecting portion that is connected with described measurement handle and with described movable claw with the use of, along the measurement section measuring the extension of handle radial direction, the measurement section of described fixed claw all has the mating surface of cell wall snug fit when measuring and corresponding to the opposing side of described movable claw.
Described measurement handle has along its axially through mounting hole, described air plug gauge is positioned at mounting hole, described measurement handle lateral wall is provided with spacing hole, one end away from air plug gauge of described movable claw stretches out described spacing hole and movable claw can move along measuring handle axial direction in spacing hole, and described movable claw is resisted against one end of described spacing hole under the effect of elastic component.
Described movable claw and described air plug gauge are by securing member releasable connection, and described measurement handle is provided with the fabrication hole that the corresponding described securing member of confession passes through.
One end away from described air plug gauge of described movable claw and/or measurement section is provided with to be convenient to movable claw and/or measurement section and to extend into guide frame in groove to be measured when measuring.
Described guide frame is formed by the inclined-plane of the end of movable claw and/or measurement section.
The connecting portion of described fixed claw is sleeve-shaped, and described fixed claw is movably set on described measurement handle, and described fixed claw also has the lock part be fixed on by described connecting portion on described measurement handle.
The connecting portion of described fixed claw is provided with the resigning hole of stepping down when moving along described measurement handle axial direction to described movable claw.
Described measurement handle periphery is provided with for the spline locating surface to described fixed claw spline.
Described measurement handle has the mounting hole extended along its axial direction, and described air plug gauge guiding movement is assemblied in the mounting hole of described measurement handle.
Described elastic component is spring, described spring be positioned at described measurement handle away from it for installing and measuring one end mounting hole of table, press fit is pushed up in one end of described spring and one end of described air plug gauge.
Beneficial effect of the present invention: in use, by being provided with fixed claw, one end of measurement handle of movable claw puts in the hole of workpiece groove width measurement mechanism of the present invention, and fixed claw measurement section and movable claw are all extend in the inner groove of workpiece.The side with mating surface of movable claw holds out against on a sidewall of inner groove under the acting force of elastic component, and the side with mating surface of fixed claw holds out against on another sidewall of inner groove.Adopt elastic component can ensure that the corresponding mating surface of fixed claw measurement section and movable claw can hold out against on two sidewalls of inner groove, avoid and use manpower to control the distance relative to fixed claw of movable claw and the error that causes.The measuring basis of this measurement mechanism is two trough wall surfaces of inner groove, and two trough wall surfaces are all smart reference fields, acted as reference mutual, and relative to prior art, the error of measurement is less, measures the groove width size value precision obtained higher.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation being processed with the part of inner groove;
Fig. 2 is the structural representation of the embodiment of groove width measurement mechanism of the present invention;
Fig. 3 is the enlarged drawing at the A place in Fig. 2;
Fig. 4 is the front view of the air plug gauge in Fig. 2;
Fig. 5 is the vertical view of Fig. 4;
Fig. 6 is the structural representation of the measurement handle in Fig. 2;
Fig. 7 is the cut-open view of Fig. 6;
Fig. 8 is the front view of the fixed claw in Fig. 2;
Fig. 9 is the upward view of Fig. 8;
Figure 10 is the B-B cut-open view of Fig. 8;
Figure 11 is the structural representation of the movable claw in Fig. 2.
Embodiment
The embodiment of a kind of groove width measurement mechanism of the present invention, as shown in figs. 2-11: this measurement mechanism comprises the measurement handle 1 that extends in left-right direction and guiding movement is assemblied in the air plug gauge 8 measured in handle 1 mounting hole 17, the mounting hole 17 measuring handle 1 is through hole through in left-right direction.Measure the right-hand member of handle 1 and be provided with installation portion 11 for installing dial gauge, installation portion 11 is provided with the mounting groove 16 being communicated with mounting hole, and the sidewall of installation portion is provided with screw hole, and dial gauge 10 to be inserted in mounting groove and to be fixed by trip bolt 12.The measuring head 13 of dial gauge 10 is resisted against on the right side of air plug gauge 8.Measure on handle 1 and be set with handle 9 in the left of dial gauge 10.
That measures handle 1 is provided with spacing hole 14 away from it for the end lateral wall installing dial gauge 10, and spacing hole 14 is the elongated hole that the length of left and right directions is greater than that the length of handle 1 peripheral direction is measured on its edge.Air plug gauge 8 is connected with movable claw 7, described spacing hole 14 is stretched out and movable claw 7 can move left and right in spacing hole 14 along the radial direction of air plug gauge 8 in one end away from air plug gauge 8 of movable claw 7.Air plug gauge 8 is provided with perforation 81, and one end of movable claw 7 is inserted in perforation 81, and the other end stretches out spacing hole 14.Air plug gauge 8 sidewall is also provided with the mandrel pin-and-hole 82 of communication bores, the one end in the insertion perforation of movable claw 7 is provided with the movable claw pin-and-hole 72 corresponding with mandrel pin-and-hole.Movable claw 7 and air plug gauge 8, by pin 6 releasable connection, are measured handle 1 and are provided with the corresponding fabrication hole 15 passed through for pin.Also be provided with for pushing up pressure air plug gauge and making movable claw be resisted against the spring 5 of the right-hand member of spacing hole in the mounting hole 17 of measurement handle 1, spring 5 is in the left of air plug gauge 8.Measure handle 1 left end envelope and be provided with spiral pin 4, spring 5 is enclosed within spiral pin 4, and the left end of spring 5 is resisted against on the step surface of spiral pin, the other end of spring 5 and the left end top press fit of air plug gauge 8.The left end of air plug gauge 8 is provided with dodges hole 83, and dodging hole is blind hole, to avoid when air plug gauge is moved to the left and spiral pin 4 is interfered.
Measure on handle 1 and be provided with fixed claw 2 in spacing hole 14 place, fixed claw 2 comprises the fixed claw body 23 of sleeve-shaped, and fixed claw body 23 is as the connecting portion be connected with measurement handle 1.Fixed claw 2 have extend along described measurement handle radial direction, with described movable claw with the use of measurement section 22, fixed claw also has the lock part 21 be fixed on described measurement handle.The boss of lock part 21 for extending radially outward, lock part is provided with the through screw hole 25 to measuring handle outer peripheral face, fixed claw 2 is movably set in be measured on handle 1 periphery, and measure on handle 1 periphery and be provided with a plane 18 in screw hole place, fixed claw 2 is fixed on by holding screw 3 and measures on handle.Holding screw 3 holds out against in the plane measuring handle periphery, can prevent fixed claw 2 from rotating.Measurement section 22 is the U-type groove structure of opening towards a left side, and fixed claw body 23 is provided with the resigning hole 24 of stepping down when moving in left-right direction to movable claw, and resigning hole 24 extends to the groove bottom wall of the U-type groove of measurement section left.
The measurement section 22 of fixed claw 2 leaves the gap of setting with the relative side of movable claw 7 when measuring, the measurement section of fixed claw all has the mating surface of cell wall snug fit when measuring with corresponding with the side of the opposing of movable claw.The end away from described air plug gauge of movable claw and fixed claw be equipped be convenient to movable claw when measuring, fixed claw extend into guide frame 71 in groove to be measured.Guide frame 71 is formed by the inclined-plane of the movable claw of correspondence, the end of fixed claw.
The groove width measurement mechanism of the present embodiment in use, first loosen holding screw 3, adjustment fixed claw 2, in measurement handle 1 position axially, makes the distance between fixed claw measurement section and the opposing both sides of movable claw slightly larger than groove width size to be measured, then lock holding screw 3, fixed claw is fixed.Extend between the two side of check gauge by fixed claw 2 measurement section 22 and movable claw 7, rotation measuring handle 1, fixed claw, movable claw are followed measurement handle and are rotated together.Be applied to the acting force of movable claw at check gauge sidewall under, movable claw 7 relative to fixed claw 2 in the axial direction spacing can change, movable claw 7 drives air plug gauge 8 to move around in the lateral direction, the pointer of dial gauge 10 also can swing back and forth, by dial gauge 10 pointer at minimum position place to zero.After zero, by being provided with fixed claw, one end of movable claw puts in the hole of workpiece, until when movable claw 7 moves to the inner groove place of workpiece, apply the acting force of radial direction a little, due to fixed claw, movable claw being equipped with guide frame 71, the measurement section of fixed claw and movable claw ratio are easier to put in inner groove.The side with mating surface of movable claw holds out against on a sidewall of inner groove under the acting force of spring 5, and the side with mating surface of fixed claw 2 holds out against on another sidewall of inner groove.In normal state, movable claw 7 and air plug gauge 8 always keep the trend moved right, and movable claw holds out against the right-hand member at spacing hole.Rotation measuring handle, the measurement section of movable claw and fixed claw is rotated in inner groove, and movable claw 7 is when being subject to cell wall acting force left, and movable claw 7 can drive air plug gauge 8 to be moved to the left together.Movable claw 7 is mobile in the spacing hole 14 of slot-type.When losing acting force left, under the effect of spring 5, air plug gauge 8 moves right, and movable claw 7 is followed air plug gauge 8 and moved right.In the process that air plug gauge moves around, dial gauge is under the effect of air plug gauge, and pointer can swing back and forth, and reaches the object of measurement.The least count of the pointer of dial gauge is exactly the groove width physical size of the inner groove of this workpiece.The measuring basis of this measurement mechanism is two trough wall surfaces of inner groove, and two trough wall surfaces are all smart reference fields, acted as reference mutual, and relative to prior art, the error of measurement is less, measures the groove width size value precision obtained higher.And measurement mechanism of the present invention does not limit to and measures the groove width of the inner groove in blind hole, can also measure the groove width of the inner groove in through hole, range of application is wider.
In the present embodiment, the mounting hole measuring handle is set as through hole, the spiral pin of shutoff through hole is set at the left end measuring handle, is convenient to dismounting air plug gauge; In other embodiments, also mounting hole can be set as the blind hole that left end is closed, spring be placed on the left end in mounting hole.
In other embodiments, also spring can be arranged in the right of movable claw on air plug gauge, air plug gauge arranges the shaft shoulder, and spring is positioned at the right of the shaft shoulder, on air plug gauge in the right of spring a sheathed axle sleeve, the measuring head of dial gauge is resisted against on air plug gauge end face through axle sleeve.Spring is between the shaft shoulder and axle sleeve in normal condition, and spring is in compressive state, and under the action of the spring, movable claw holds out against the left end at spacing hole, and now, the measuring point of fixed claw is in the right side of movable claw.
In other embodiments, the connection of movable claw and air plug gauge, also by gluing, also can change pin into screw.
In the present embodiment, elastic component adopts volute spring, and in other embodiments, elastic component can rubber spring, the elastic body that elastic component also can adopt macromolecular material to make; Because the free gap between movable claw and the measurement section of fixed claw is less, also elastomeric pad can be adopted in other embodiments; Or employing torsion spring.
In the present embodiment, the fixed claw body of fixed claw adopts the structure of sleeve-shaped, fixed claw to be sleeved on and measures on handle, is convenient to fixed claw in the adjustment of measuring axial location on handle, is also convenient to be fixed its position by screw; Fixed claw body makes sleeve-like configuration form, the resigning hole that fixed claw body is arranged need be made U-shaped, namely the right-hand member of resigning hole is through with the right side of fixed claw body, to ensure that movable claw can enter into the resigning hole of fixed claw when axially installing fixed claw.In other embodiments, the fixed claw body of fixed claw can be done camber, the radius size of fixed claw body is with to measure handle adaptive; If fixed claw can be arranged on along measurement handle radial direction and measure on handle, so the right-hand member of resigning hole can not be through with the right side of fixed claw body, but resigning hole is elongated hole, moves around can meet the axial direction that movable claw is measuring handle.
In the present embodiment, being made movably by fixed claw, is the inner groove in order to make measurement mechanism of the present invention can be suitable for different groove width, according to the difference of groove width, adjusts the position relative to movable claw of fixed claw in advance; In other embodiments, if the measurement of the inner groove for a kind of groove width, fixed claw can be made fixed, measurement handle periphery arranges corresponding screw hole, by screw, fixed claw is fixed on measurement handle, make its position non-adjustable, not be used on measurement handle periphery and arrange plane, fixed claw can not rotate; Also fixed claw can be weldingly fixed on and measure on handle, to fix its position; Or adopt pin to be connected to by fixed claw to measure on handle, lock part is offered corresponding pin-and-hole, the through hole corresponding with pin-and-hole is set on measurement handle periphery simultaneously.
In the present embodiment, by arranging a plane as spline locating surface on measurement handle periphery, prevent fixed claw from rotating relative to measurement handle; In other embodiments, this plane also can arrange two; In other embodiments, in order to prevent fixed claw from rotating, also can adopt the mode that key connects, fixed claw and measure handle and to be connected by key and to realize spline.
In other embodiments, only can arrange guide frame in the measurement section of movable claw or fixed claw, guide frame is also not limited to inclined-plane, and guide frame also can be formed by circular conical surface.
In other embodiments, for the inner groove that accuracy requirement is higher, clock gauge can be adopted as meter to replace dial gauge.
In the present embodiment, air plug gauge is assemblied in the mounting hole measured in handle, makes the volume of whole measurement mechanism little, be convenient to insert in the little workpiece in aperture; In other embodiments, measurement handle also can not arrange through mounting hole, and the outer wall of measurement handle arranges guide frame, and air plug gauge guiding is assemblied on the guide frame on measurement handle, and air plug gauge be arranged in parallel with measurement handle.
Claims (10)
1. groove width measurement mechanism, comprise and measure handle and guiding movement and be assemblied in air plug gauge on described measurement handle, it is characterized in that: between described measurement handle and described air plug gauge, be provided with elastic component, described air plug gauge is connected with the movable claw radially extended, described measurement handle is provided with fixed claw, described fixed claw comprise the connecting portion that is connected with described measurement handle and with described movable claw with the use of, along the measurement section measuring the extension of handle radial direction, the measurement section of described fixed claw all has the mating surface of cell wall snug fit when measuring and corresponding to the opposing side of described movable claw.
2. groove width measurement mechanism according to claim 1, it is characterized in that: described measurement handle has along its axially through mounting hole, described air plug gauge is positioned at mounting hole, described measurement handle lateral wall is provided with spacing hole, one end away from air plug gauge of described movable claw stretches out described spacing hole and movable claw can move along measuring handle axial direction in spacing hole, and described movable claw is resisted against one end of described spacing hole under the effect of elastic component.
3. groove width measurement mechanism according to claim 1, is characterized in that: described movable claw and described air plug gauge are by securing member releasable connection, and described measurement handle is provided with the fabrication hole that the corresponding described securing member of confession passes through.
4. groove width measurement mechanism according to claim 1, is characterized in that: one end away from described air plug gauge of described movable claw and/or measurement section is provided with to be convenient to movable claw and/or measurement section and to extend into guide frame in groove to be measured when measuring.
5. groove width measurement mechanism according to claim 4, is characterized in that: described guide frame is formed by the inclined-plane of the end of movable claw and/or measurement section.
6. groove width measurement mechanism according to claim 1, it is characterized in that: the connecting portion of described fixed claw is sleeve-shaped, described fixed claw is movably set on described measurement handle, and described fixed claw also has the lock part be fixed on by described connecting portion on described measurement handle.
7. groove width measurement mechanism according to claim 6, is characterized in that: the connecting portion of described fixed claw is provided with the resigning hole of stepping down when moving along described measurement handle axial direction to described movable claw.
8. groove width measurement mechanism according to claim 6, is characterized in that: described measurement handle periphery is provided with for the spline locating surface to described fixed claw spline.
9. groove width measurement mechanism according to claim 1, is characterized in that: described measurement handle has the mounting hole extended along its axial direction, and described air plug gauge guiding movement is assemblied in the mounting hole of described measurement handle.
10. groove width measurement mechanism according to claim 9, it is characterized in that: described elastic component is spring, described spring be positioned at described measurement handle away from it for installing and measuring one end mounting hole of table, press fit is pushed up in one end of described spring and one end of described air plug gauge.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510457687.6A CN105043208A (en) | 2015-07-30 | 2015-07-30 | Groove width measuring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510457687.6A CN105043208A (en) | 2015-07-30 | 2015-07-30 | Groove width measuring device |
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| CN105043208A true CN105043208A (en) | 2015-11-11 |
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| CN201510457687.6A Pending CN105043208A (en) | 2015-07-30 | 2015-07-30 | Groove width measuring device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105352402A (en) * | 2015-12-10 | 2016-02-24 | 湖南南方宇航工业有限公司 | Measuring tool for measuring width of inclined plane inner ring groove |
| CN106767285A (en) * | 2017-03-17 | 2017-05-31 | 江苏太平洋精锻科技股份有限公司 | Machine components hole outer annular recess width dimensions quantitatively measuring device |
| CN111174741A (en) * | 2020-01-21 | 2020-05-19 | 江苏理工学院 | Measuring device for cylindrical part with inner hole |
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| CN101726228A (en) * | 2008-10-31 | 2010-06-09 | 江苏飞船股份有限公司 | Tool for checking M value of internal spline |
| CN202141411U (en) * | 2011-06-27 | 2012-02-08 | 平高集团有限公司 | Groove width testing device of tapered groove |
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| CN204924106U (en) * | 2015-07-30 | 2015-12-30 | 河南平高电气股份有限公司 | Groove width measuring device |
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| DE2124831A1 (en) * | 1971-05-19 | 1972-12-14 | Weber H | Measuring device for comparison measurements |
| CN101726228A (en) * | 2008-10-31 | 2010-06-09 | 江苏飞船股份有限公司 | Tool for checking M value of internal spline |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105352402A (en) * | 2015-12-10 | 2016-02-24 | 湖南南方宇航工业有限公司 | Measuring tool for measuring width of inclined plane inner ring groove |
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| CN106767285A (en) * | 2017-03-17 | 2017-05-31 | 江苏太平洋精锻科技股份有限公司 | Machine components hole outer annular recess width dimensions quantitatively measuring device |
| CN111174741A (en) * | 2020-01-21 | 2020-05-19 | 江苏理工学院 | Measuring device for cylindrical part with inner hole |
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