CN103512443B - Improvement micrometer inside caliper - Google Patents
Improvement micrometer inside caliper Download PDFInfo
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- CN103512443B CN103512443B CN201310371382.4A CN201310371382A CN103512443B CN 103512443 B CN103512443 B CN 103512443B CN 201310371382 A CN201310371382 A CN 201310371382A CN 103512443 B CN103512443 B CN 103512443B
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- gauge head
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Abstract
The present invention relates to a kind of improvement micrometer inside caliper, sliding inner sleeve is arranged in the inner chamber of overcoat, one end of sliding inner sleeve contacts with gauge head in the differential of milscale body through after the through hole of the first back up pad, the other end of sliding inner sleeve is through the through hole in the second back up pad, first spring housing is on sliding inner sleeve, one end of first spring is spacing by the second back up pad, the other end of the first spring is spacing by sliding inner sleeve, interior gauge head one end is positioned at the outside of sliding inner sleeve and to stretch out the inner chamber body of overcoat outside, the side face of overcoat is provided with the first bar hole, the side face of sliding inner sleeve is provided with the second bar hole, one end of sliding triggering block is fixedly connected with interior gauge head through after the first bar shaped and the second bar shaped, one end of support is positioned at the mounting hole place of overcoat and is connected with sliding inner sleeve, scale is fixed on support, the measuring staff of scale contacts with the other end of sliding triggering block.Measuring accuracy of the present invention is high, this invention removes gauger simultaneously and relies on feel to the judgement of measured workpiece size.
Description
Technical field
The present invention relates to groove or hole inner diameter measurement technical field, be specifically related to the improvement micrometer inside caliper of a kind of measuring flume or hole internal diameter.
Background technology
Improvement micrometer inside caliper utilizes screw pair principle to the distance separated between the spherical measuring surface in main body two ends, carries out the general inside dimension survey instrument of reading.Although milscale itself has the high characteristic of measuring accuracy, but due to when when measuring, the adjustment end of microdrum contacts with the internal face of workpiece, the degree of tightness dynamics that improvement micrometer inside caliper contacts with workpiece inner wall face comments gauger's feel experience to control (such as entirely, the error measuring workpiece after first user adjusts microdrum with self sensation is 0.135mm, the error measuring workpiece after second user adjusts microdrum with self sensation is 0.165mm, and in fact the real error of workpiece is 0.15mm), it is inaccurate that the difference of the ergometry that gauger uses result in measurement result, and there is deviation between different gaugers.
Summary of the invention
For the deficiencies in the prior art, the present invention relates to the improvement micrometer inside caliper that a kind of measuring accuracy is higher, this invention removes gauger simultaneously and rely on the physical size of feel to measured workpiece to judge.
The technical scheme solved the problems of the technologies described above is as follows:
Improvement micrometer inside caliper, comprise milscale body, also comprise overcoat, sliding inner sleeve, interior gauge head, first spring, second spring, sliding triggering block, support and scale, after milscale body is fixedly connected with one end of overcoat, in differential on this milscale body, gauge head extend in the inner chamber of overcoat, the internal face of described overcoat is provided with the first back up pad and the second back up pad, first back up pad and the second back up pad are equipped with through hole, described sliding inner sleeve is arranged in the inner chamber of overcoat, one end of sliding inner sleeve contacts with gauge head in the differential of milscale body through after the through hole of the first back up pad, the other end of sliding inner sleeve is through the through hole in the second back up pad, first spring housing is on sliding inner sleeve, one end of first spring is spacing by the second back up pad, the other end of the first spring is spacing by sliding inner sleeve, one end of interior gauge head is slidably fitted in after in the endoporus of sliding inner sleeve, described second spring is pressed between this end and sliding inner sleeve of interior gauge head, the other end of interior gauge head is positioned at the outside of sliding inner sleeve and to stretch out the inner chamber body of overcoat outside, the side face of overcoat is provided with the first bar hole, the side face of sliding inner sleeve is provided with the second bar hole, one end of described sliding triggering block is fixedly connected with interior gauge head through after the first bar shaped and the second bar shaped successively, the periphery of described overcoat is provided with mounting hole, one end of described support is positioned at the mounting hole place of overcoat and is fixedly connected with sliding inner sleeve, scale is fixed on support, the measuring staff of scale contacts with the other end of sliding triggering block.
Have employed such scheme, described sliding inner sleeve is arranged in the inner chamber of overcoat, one end of sliding inner sleeve contacts with gauge head in the differential of milscale body through after the through hole of the first back up pad, the other end of sliding inner sleeve is through the through hole in the second back up pad, first spring housing is on sliding inner sleeve, one end of first spring is spacing by the second back up pad, the other end of the first spring is spacing by sliding inner sleeve, due to two supports of sliding inner sleeve in overcoat can slide, and made gauge head in the differential of sliding inner sleeve and milscale body keep close contact by the tension force of the first spring, therefore, not only ensure that the joining accuracy of gauge head in sliding inner sleeve and differential, and sliding inner sleeve is equivalent to the extension of gauge head in differential.One end of interior gauge head is slidably fitted in after in the endoporus of sliding inner sleeve, described second spring is pressed between this end and sliding inner sleeve of interior gauge head, the other end of interior gauge head is positioned at the outside of sliding inner sleeve and to stretch out the inner chamber body of overcoat outside, after such assembling, not only make interior gauge head can moving axially along sliding inner sleeve, and under the effect of the second spring, interior gauge head also has retractility.The side face of overcoat is provided with the first bar hole, the side face of sliding inner sleeve is provided with the second bar hole, one end of described sliding triggering block is fixedly connected with interior gauge head through after the first bar shaped and the second bar shaped successively, the periphery of described overcoat is provided with mounting hole, one end of described support is positioned at the mounting hole place of overcoat and is fixedly connected with sliding inner sleeve, scale is fixed on support, and the measuring staff of scale contacts with the other end of sliding triggering block.When one end that interior gauge head is positioned at sliding inner sleeve outside is stressed, interior gauge head moving axially along sliding inner sleeve, drive sliding triggering block fixed thereon to move simultaneously, in addition, power is passed to sliding inner sleeve by the second spring by interior gauge head, and this sliding inner sleeve drives support-moving, and support drives dial gauge to move, namely in, gauge head is stressed, then sliding inner sleeve, support and dial gauge can integrally move.Because the elasticity coefficient of the spring in dial gauge and the second spring is inconsistent, therefore dial gauge and sliding triggering block define relative motion, and like this, dial gauge has new reading.When needs are measured workpiece, according to the size of measured workpiece, the milscale body close with measured workpiece length is selected to be connected to outer putting, improvement micrometer inside caliper of the present invention is integrally placed in calibrated bolck (calibrated bolck of such as 250mm) and proofreads, by scale zero setting position when having proofreaded.The present invention proofreaded is put into hole or the groove of measured workpiece, if the internal diameter of measured hole or groove is greater than the present invention proofreaded, then adjust microdrum, the end of microdrum is contacted with the internal face of workpiece, instruction simultaneously on scale is still in zero-bit, at this moment, the reading on microdrum is the error of workpiece diameter.If the internal diameter of measured hole or groove is less than the present invention proofreaded, time then in access aperture of the present invention or groove, interior gauge head is compressed, the force of compression be subject to is passed to sliding inner sleeve by interior gauge head, sliding inner sleeve drives dial gauge displacement by support, like this, the instruction on scale is not just in zero-bit, and the reading on scale is the error of hole or groove.Therefore, in use, by the instruction of scale, the error that original improvement micrometer inside caliper is caused by the mode of artificial ergometry is eliminated.
Improvement micrometer inside caliper, comprise milscale body, also comprise overcoat, sliding inner sleeve, first spring, scale, second spring, interior gauge head, after milscale body is fixedly connected with one end of overcoat, in differential on this milscale body, gauge head extend in the inner chamber of overcoat, the internal face of described overcoat is provided with the first back up pad and the second back up pad, first back up pad and the second back up pad are equipped with through hole, described sliding inner sleeve is arranged in the inner chamber of overcoat, one end of sliding inner sleeve contacts with gauge head in the differential of milscale body through after the through hole of the first back up pad, the other end of sliding inner sleeve is through the through hole in the second back up pad, first spring housing is on sliding inner sleeve, one end of first spring is spacing by the first back up pad, the other end of the first spring is spacing by the end of gauge head in the contact differential of sliding inner sleeve, the middle part of sliding inner sleeve is provided with container cavity, the side face of overcoat is provided with hole, scale is embedded in this container cavity, the indication surface of scale reaches overcoat outside by the hole on overcoat side face, the measuring staff of scale is snug fit in the axial hole of sliding inner sleeve, one end of the measuring staff of scale extends to the outside of sliding inner sleeve and the end thereof contacts of described interior gauge head, the through hole that the other end of interior gauge head is arranged through the overcoat other end reaches overcoat outside, described second spring housing is on interior gauge head, second spring is between interior gauge head and the second back up pad.
Have employed such scheme, described sliding inner sleeve is arranged in the inner chamber of overcoat, one end of sliding inner sleeve contacts with gauge head in the differential of milscale body through after the through hole of the first back up pad, the other end of sliding inner sleeve is through the through hole in the second back up pad, first spring housing is on sliding inner sleeve, one end of first spring is spacing by the first back up pad, the other end of the first spring is spacing by the end of gauge head in the contact differential of sliding inner sleeve, due to two supports of sliding inner sleeve in overcoat can slide, and made gauge head in the differential of sliding inner sleeve and milscale body keep close contact by the tension force of the first spring, therefore, not only ensure that the joining accuracy of gauge head in sliding inner sleeve and differential, and sliding inner sleeve is equivalent to the extension of gauge head in differential.The measuring staff of scale is snug fit in the axial hole of sliding inner sleeve, one end of the measuring staff of scale extends to the outside of sliding inner sleeve and the end thereof contacts of described interior gauge head, the through hole that the other end of interior gauge head is arranged through the overcoat other end reaches overcoat outside, described second spring housing is on interior gauge head, and the second spring is between interior gauge head and the second back up pad.Not only make interior gauge head move axially, and under the effect of the second spring, interior gauge head also have retractility.When needs are measured workpiece, according to the size of measured workpiece, the milscale body close with measured workpiece length is selected to be connected to outer putting, improvement micrometer inside caliper of the present invention is integrally placed in calibrated bolck (calibrated bolck of such as 250mm) and proofreads, by scale zero setting position when having proofreaded.The present invention proofreaded is put into hole or the groove of measured workpiece, if the internal diameter of measured hole or groove is greater than the present invention proofreaded, then adjust microdrum, the end of microdrum is contacted with the internal face of workpiece, instruction simultaneously on scale is still in zero-bit, at this moment, the reading on microdrum is the error of workpiece diameter.If microdrum adjustment is excessive, namely the diameter improveing micrometer inside caliper adjusts be greater than the physical size of workpiece, at this moment the instruction of scale is not in zero-bit, reads the reading on scale, and is the actual error value of workpiece with the reading that the reading on microdrum deducts on dial gauge.If the internal diameter of measured hole or groove is less than the present invention proofreaded, then, time in access aperture of the present invention or groove, interior gauge head is compressed, the force of compression be subject to is passed to the measuring staff of scale by interior gauge head, like this, the instruction on scale is not just in zero-bit, and the reading on scale is the error of hole or groove.Therefore, in use, by the instruction of scale, the error that original improvement micrometer inside caliper is caused by the mode of artificial ergometry is eliminated.
In sum, improvement micrometer inside caliper of the present invention can be connected with the extension bar of 150-2000 millimeter specification, the acting force work done that the dynamics of measurement produces with part first spring, can require the specification of required Option stage first spring according to dynamometry.Improvement micrometer inside caliper of the present invention, that the micrometer inside caliper of 150-2000 millimeter specification and dial gauge connect as one by utilization one combination unit, to the measurer that workpiece is measured, the present invention is a very practical invention for measuring within the scope of 200-2000 mm size.The present invention has possessed the characteristic of milscale and dial gauge simultaneously, and after two kinds of characteristics being combined, measuring accuracy not only becomes higher, and due to the connection of connected mode employing high precision tubulose pitman shaft, so measure convenience much larger than common micrometer inside caliper.
Accompanying drawing explanation
In figure 1 be of the present invention the first improvement micrometer inside caliper cross-sectional view;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is the left view of Fig. 2;
Fig. 4 is the cross-sectional view of the second of the present invention improvement micrometer inside caliper;
Fig. 5 is the vertical view of Fig. 4;
Fig. 6 is the left view of Fig. 5;
Fig. 7 is the check and correction schematic diagram of improvement micrometer inside caliper on 250mm calibrated bolck of Fig. 1;
Fig. 8 is the check and correction schematic diagram of improvement micrometer inside caliper on 250mm calibrated bolck of Fig. 4;
Fig. 9 is the schematic diagram of the high precision tubulose pitman shaft of various length dimension;
Figure 10 is the distance schematic diagram that the present invention proofreads when proofreading zero-bit;
In accompanying drawing, 1 is milscale body, and 2 is gauge head in differential, and 3 is overcoat, 3a is the first back up pad, and 3b is the second back up pad, and 4 is sliding inner sleeve, and 5 is the second spring, 6 is the first spring, and 7 is end cap, and 8 is nut cap, and 9 is interior gauge head, 9a is connecting link, and 9b is measuring staff, and 9c is outrigger shaft, and 10 is sliding triggering block, 11 is support, and 11a is main frame, and 11b is the first support arm, 11c is the second support arm, and 12 is lock-screw, and 13 is scale;
20 is milscale body, and 20a is gauge head in differential, and 21a is coat body, 21b is end cap, and 21c is the first back up pad, and 21d is the second back up pad, 22 is sliding inner sleeve, and 22a is container cavity, and 23 is the first spring, 24 is scale, and 24a is measuring staff, and 25 is the second spring, 26 is interior gauge head, 27 for protecting bridge, and 28 is sheath, and 29 is nut cap.
30 is calibrated bolck.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described.
Embodiment one:
Referring to figs. 1 through Fig. 3, the first improvement micrometer inside caliper of the present invention, comprises milscale body 1, overcoat 3, sliding inner sleeve 4, interior gauge head 9, first spring 6, second spring 5, sliding triggering block 10, support 11, scale 13, end cap 7.Milscale body 1 shown in Fig. 1 and Fig. 2 merely illustrates one section, can carry out lengthening pitman shaft group (size of every section of pitman shaft is standard) according to the needs measured, and every section is equipped with screw thread, during lengthening, two sections or multistage is passed through being threaded.Milscale body connects, and after being fixedly connected with one end of overcoat 3 by the milscale body 1 of non-rear, in the differential on this milscale body, gauge head 2 extend in the inner chamber of overcoat 3.In Fig. 1 milscale body 1 inside differential in gauge head 2 microdrum and microdrum accurate thread bar be threaded by M7.5 × 0.5, form the basic connector (when microdrum rotation groove is all zero) of minimum 120 millimeters long, this connector can drive accurate thread bar to rotate by rotating microdrum, has 25 millimeters to adjust and measures stroke (50-600 specification micrometer inside caliper is that stroke is measured in 13 millimeters of adjustment).
Described overcoat 3 is the cylindrical body that two ends have opening, and the internal face of overcoat 3 is provided with the first back up pad 3a and the second back up pad 3b, and the first back up pad 3a and the second back up pad 3b is equipped with through hole.The side face at described overcoat two ends is equipped with annular knurl.Described sliding inner sleeve 4 is arranged in the inner chamber of overcoat 3, one end of sliding inner sleeve 4 contacts with gauge head 2 in the differential of milscale body 1 through after the through hole of the first back up pad 3a, the other end of sliding inner sleeve 4 is through the through hole in the second back up pad, and the through hole in sliding inner sleeve 4 and the first back up pad and the second back up pad is slip cooperating relationship.The endoporus of sliding inner sleeve 4 is a stepped hole, and carry out spacing by the step surface of stepped hole to one end of the second spring, the other end of the second spring is undertaken spacing by interior gauge head, and like this, the acting force that the second spring produces makes interior gauge head have retractility.The outer circumference surface of sliding inner sleeve 4 is provided with a limited step, and this limited step is shaped to shaft shoulder shape through turnery processing on sliding inner sleeve excircle.First spring 6 is enclosed within sliding inner sleeve, and one end of the first spring is spacing by the second back up pad, and the other end of the first spring 6 is spacing by sliding inner sleeve, and namely the other end of the first spring 6 is undertaken spacing by the limited step on sliding inner sleeve.Undertaken spacing by limited step one end to the first spring 6, because the other end of the first spring 6 is undertaken spacing by the second back up pad 3b, therefore, under this structure, the acting force that the first spring produces makes sliding inner sleeve keep close contact with gauge head in the differential of milscale body all the time.Described end cap 7 is connected with the end winding support of overcoat 3, and end cap 7 is provided with through hole, and the cross section of this end cap is convex shape.Described sliding inner sleeve 4 extend in the through hole of end cap 7 through the end of the second back up pad 3b, and natch, interior gauge head 9 will pass the outside of end cap 7.By end cap, shunk the end of milscale of the present invention, from the appearance milscale of the present invention, seemed more attractive in appearance, and serve supporting role to sliding inner sleeve, the outside that internal gauge head extends to overcoat serves connecting effect.A nut cap 8 is provided with between sliding inner sleeve 4 and end cap 7, described interior gauge head 9 is positioned at the through hole that the end of sliding inner sleeve outside and nut cap are arranged and is slidably matched and passes the through hole on nut cap, the excircle of nut cap is fixedly connected with the inner peripheral surface of sliding inner sleeve, is connected between nut cap with sliding inner sleeve 4 by screw thread.Filled by the gap of nut cap 8 pairs between end cap and sliding inner sleeve, prevent the impurity such as extraneous dust from entering into the inside of outer thousand points of overcoats and sliding inner sleeve, to the precision of measurement and life-span the providing safeguard property effect of product.
One end of interior gauge head 9 is slidably fitted in after in the endoporus of sliding inner sleeve 4, and described second spring 5 is pressed between this end and sliding inner sleeve of interior gauge head, and the other end of interior gauge head is positioned at the outside of sliding inner sleeve and to reach the inner chamber body of overcoat 3 outside.Described interior gauge head 9 is made up of connecting link 9a and measuring staff 9b, one end of described connecting link 9a is the part that interior gauge head is slidably fitted in sliding inner sleeve endoporus, the other end of connecting link 9a is connected with one end of measuring staff 9b, the other end of measuring staff 9b is the part being positioned at sliding inner sleeve outside of interior gauge head, and the external diameter of measuring staff 9b is less than the external diameter of connecting link.Interior gauge head 9 one end be slidably fitted in sliding inner sleeve endoporus is provided with outrigger shaft 9c, namely outrigger shaft 9c is fixed on connecting link 9a and is arranged on the axial end of sliding inner sleeve endoporus, the external diameter of this outrigger shaft 9c is less than the external diameter of interior gauge head, the external diameter of outrigger shaft 9c is less than the external diameter of connecting link 9a in the present embodiment, like this, a step surface is formed between connecting link 9a and outrigger shaft 9c, described second spring 5 is enclosed within this outrigger shaft 9c, like this, one end of second spring 5 is spacing by the step surface between connecting link 9a and outrigger shaft 9c, the other end is then spacing by the step surface in sliding inner sleeve 4 endoporus.Therefore, be there is by outrigger shaft the feature facilitating installation second spring.
The side face of overcoat 3 is provided with the first bar hole, and the side face of sliding inner sleeve 4 is provided with the second bar hole, and one end of described sliding triggering block 10 is fixedly connected with interior gauge head 9 through after the first bar shaped and the second bar shaped successively.The periphery of described overcoat 3 is provided with mounting hole, and one end of described support 11 is positioned at the mounting hole place of overcoat 3 and is fixedly connected with sliding inner sleeve 4.Described support 11 comprises main frame 11a, and the two ends of this main frame bend respectively and extend to form the support that the first support arm 11b and the second support arm 11c, main frame 11a and the first support arm 11b and the second support arm 11c be formed by connecting is half-surrounded.The support of this structure not only supports scale well, but also occupies assembly space as little as possible, and the domes of two support arms can bear larger pressure, therefore also has the strong and robust feature of load-bearing capacity.Scale 13 is fixed on support 11, and the measuring staff of scale 13 contacts with the other end of sliding triggering block 10.Scale 13 is dial gauge, and scale 13 is fastened on the main frame 11a of support 11 by lock-screw 12, and the axis of the measuring staff of scale 13 and the axis of interior gauge head are parallel to each other.
Embodiment two:
With reference to Fig. 4 to Fig. 6, improvement micrometer inside caliper, comprise milscale body 20, overcoat, sliding inner sleeve 22, first spring 23, scale 24, second spring 25, interior gauge head 26, protect bridge 27, sheath 28, after milscale body is fixedly connected with one end of overcoat, in the differential on this milscale body, gauge head 20a extend in the inner chamber of overcoat.The milscale body of Fig. 4 and Fig. 5 merely illustrates one section, can carry out lengthening pitman shaft group (size of every section of pitman shaft is standard) according to the needs measured, and every section is equipped with screw thread, during lengthening, two sections or multistage is passed through being threaded.
Overcoat is made up of coat body 21a and end cap 21b, and coat body 21 is in cylindrical body and two ends have opening, and end cap 21b is provided with through hole, and the cross section of this end cap 21b is convex shape, and the bigger diameter end of end cap is fixedly connected with coat body.By end cap, shunk the end of milscale of the present invention, from the appearance milscale of the present invention, seemed more attractive in appearance, and serve supporting role to sliding inner sleeve, the outside that internal gauge head extends to overcoat serves connecting effect.Between sliding inner sleeve 22 and end cap 21b, be provided with a nut cap 29, can be prevented by nut cap 29 impurity such as extraneous dust from entering into the inside of outer thousand points of overcoats and sliding inner sleeve, to the precision of measurement and life-span the providing safeguard property effect of product.
The internal face of described overcoat is provided with the first back up pad 21c and the second back up pad 21d, and the first back up pad 21c and the second back up pad 21d is equipped with through hole, and the first back up pad 21c and the second back up pad 21d is all arranged in the inner chamber of coat body.
Sliding inner sleeve 22 is arranged in the inner chamber of overcoat, one end of sliding inner sleeve 22 contacts with gauge head in the differential of milscale body 20 through after the through hole of the first back up pad 21c, the other end of sliding inner sleeve 22 is through the through hole on the second back up pad 21d, first spring 23 is enclosed within sliding inner sleeve, one end of first spring 23 is spacing by the first back up pad 21c, and the other end of the first spring 23 is spacing by the end of gauge head 20a in the contact differential of sliding inner sleeve 22.The middle part of sliding inner sleeve 22 is provided with container cavity 22a, and the side face of overcoat is provided with hole.Scale 24 is embedded in this container cavity, and scale 24 is dial gauge or clock gauge.The indication surface of scale reaches overcoat outside by the hole on overcoat side face.The measuring staff 24a of scale 24 is snug fit in the axial hole of sliding inner sleeve, one end of the measuring staff of scale extends to the outside of sliding inner sleeve and the end thereof contacts of described interior gauge head 26, the through hole that the other end of interior gauge head 26 is arranged through the overcoat other end reaches overcoat outside, and namely, the other end of gauge head 26 passes from the through hole end cap 21b.Second spring 25 is enclosed within interior gauge head 26, and the second spring 25 is between interior gauge head and the second back up pad 21d.
On the outer circumference surface of overcoat, cover has one to protect bridge 27, and this protects bridge location near interior gauge head 26, protects bridge and comprises main body, is provided with the connector of annular, is provided with collar flange in the edge of another axial end of main body in the middle part of the axial end of main body one end.By protecting bridge, when measuring, the flange protected on bridge can contact with the internal face of workpiece, because flange is ring-type, therefore, serves the effect of automatic centering, makes the contact of the present invention and workpiece be in plateau and deflection can not occur.
One end of sheath 28 is closed the other end and is had opening, the side wall surface of sheath 28 is symmetrical arranged a pair through hole, and the two ends of sliding inner sleeve are passed from the through hole sheath respectively, and the middle part with container cavity of sliding inner sleeve is supported in the cavity of sheath.The bottom surface, middle part of sliding inner sleeve 22 and the cavity bottom surface of sheath are close to mutually, in case beat occurs sliding stop inner sleeve 22, thus guarantee the stability of the scale be embedded in sliding inner sleeve 22 container cavity.And from outward appearance, promoted by the aesthetic measure of sheath 28 to whole milscale.
The present invention needs to correct before measuring workpiece.Calibration standard block 30 is shown in Fig. 7 and Fig. 8 (Fig. 7 and Fig. 8 is the calibrated bolck of 250mm), for the measurement of different length, the high precision tubulose pitman shaft of various length as shown in Figure 9 can be adopted to dock.Length distance due to high precision tubulose pitman shaft has very high manufacturing accuracy to ensure, so do not need to correct after docking again.When the present invention measures, milscale microdrum has 25 millimeters to measure stroke, when milscale microdrum definite value is on measurement size, survey size during measurement and directly can read value on scale when 0-0.9 millimeter scope, directly adjust measurement when surveying size and being greater than 0.9-25 millimeter by microdrum, and do not need to change gauge head the internal diameter bore gauge of picture routine and again proofread and measure.When measuring stroke for 25 millimeters that measurement size scope exceedes milscale microdrum, adjust measurement size scope by increasing or changing pitman shaft group.
In addition, when proofreading zero-bit, the distance size of this device check and correction is that L1(is shown in Figure 10).In the middle of increasing and changing during pitman shaft, the built-in middle plug of pitman shaft can being used to carry out size connection, keep the accuracy class of original micrometer inside caliper, need needing to proofread with the standard instruments of corresponding size when increasing and change.And the second spring 25 and protect the setting of bridge 27, strengthens dynamometry and centering ability, thus this measurer in 150-2000 millimeter measurement range when bore gauge equally uses.
Claims (10)
1. improve micrometer inside caliper, comprise milscale body, it is characterized in that: also comprise overcoat, sliding inner sleeve, interior gauge head, first spring, second spring, sliding triggering block, support and scale, after milscale body is fixedly connected with one end of overcoat, in differential on this milscale body, gauge head extend in the inner chamber of overcoat, the internal face of described overcoat is provided with the first back up pad and the second back up pad, first back up pad and the second back up pad are equipped with through hole, described sliding inner sleeve is arranged in the inner chamber of overcoat, one end of sliding inner sleeve contacts with gauge head in the differential of milscale body through after the through hole of the first back up pad, the other end of sliding inner sleeve is through the through hole in the second back up pad, first spring housing is on sliding inner sleeve, one end of first spring is spacing by the second back up pad, the other end of the first spring is spacing by sliding inner sleeve, one end of interior gauge head is slidably fitted in after in the endoporus of sliding inner sleeve, described second spring is pressed between this end and sliding inner sleeve of interior gauge head, the other end of interior gauge head is positioned at the outside of sliding inner sleeve and to stretch out the inner chamber body of overcoat outside, the side face of overcoat is provided with the first bar hole, the side face of sliding inner sleeve is provided with the second bar hole, one end of described sliding triggering block is fixedly connected with interior gauge head through after the first bar shaped and the second bar shaped successively, the periphery of described overcoat is provided with mounting hole, one end of described support is positioned at the mounting hole place of overcoat and is fixedly connected with sliding inner sleeve, scale is fixed on support, the measuring staff of scale contacts with the other end of sliding triggering block.
2. improvement micrometer inside caliper according to claim 1, is characterized in that, also comprises an end cap, this end cap is connected with the end winding support of overcoat, end cap is provided with through hole, and the cross section of this end cap is convex shape, and described sliding inner sleeve extend in the through hole of end cap through the end of the second back up pad.
3. improvement micrometer inside caliper according to claim 2, it is characterized in that, a nut cap is provided with between sliding inner sleeve and end cap, described interior gauge head is positioned at the through hole that the end of sliding inner sleeve outside and nut cap are arranged and is slidably matched and passes the through hole on nut cap, and the excircle of nut cap is fixedly connected with the inner peripheral surface of sliding inner sleeve.
4. improvement micrometer inside caliper according to claim 1, it is characterized in that, described interior gauge head is made up of connecting link and measuring staff, one end of described connecting link is the part that interior gauge head is slidably fitted in sliding inner sleeve endoporus, the other end of connecting link is connected with one end of measuring staff, the other end of measuring staff is the part being positioned at sliding inner sleeve outside of interior gauge head, and the external diameter of measuring staff is less than the external diameter of connecting link.
5. the improvement micrometer inside caliper according to claim 1 or 4, it is characterized in that, one end that described interior gauge head is slidably fitted in sliding inner sleeve endoporus is provided with outrigger shaft, and the external diameter of this outrigger shaft is less than the external diameter of interior gauge head, and described second spring housing is on this outrigger shaft.
6. improvement micrometer inside caliper according to claim 1, it is characterized in that, described support comprises main frame, and the two ends of this main frame bend respectively and extend to form the first support arm and the second support arm, and the support that main frame and the first support arm and the second support arm are formed by connecting is half-surrounded.
7. improve micrometer inside caliper, comprise milscale body, it is characterized in that: also comprise overcoat, sliding inner sleeve, first spring, scale, second spring, interior gauge head, after milscale body is fixedly connected with one end of overcoat, in differential on this milscale body, gauge head extend in the inner chamber of overcoat, the internal face of described overcoat is provided with the first back up pad and the second back up pad, first back up pad and the second back up pad are equipped with through hole, described sliding inner sleeve is arranged in the inner chamber of overcoat, one end of sliding inner sleeve contacts with gauge head in the differential of milscale body through after the through hole of the first back up pad, the other end of sliding inner sleeve is through the through hole in the second back up pad, first spring housing is on sliding inner sleeve, one end of first spring is spacing by the first back up pad, the other end of the first spring is spacing by the end of gauge head in the contact differential of sliding inner sleeve, the middle part of sliding inner sleeve is provided with container cavity, the side face of overcoat is provided with hole, scale is embedded in this container cavity, the indication surface of scale reaches overcoat outside by the hole on overcoat side face, the measuring staff of scale is snug fit in the axial hole of sliding inner sleeve, one end of the measuring staff of scale extends to the outside of sliding inner sleeve and the end thereof contacts of described interior gauge head, the through hole that the other end of interior gauge head is arranged through the overcoat other end reaches overcoat outside, described second spring housing is on interior gauge head, second spring is between interior gauge head and the second back up pad.
8. improvement micrometer inside caliper according to claim 7, it is characterized in that, on the outer circumference surface of described overcoat, cover has one to protect bridge, this protects bridge location near interior gauge head, protect bridge and comprise main body, in the middle part of the axial end of main body one end, be provided with the connector of annular, be provided with collar flange in the edge of another axial end of main body.
9. the improvement micrometer inside caliper according to claim 7 or 8, it is characterized in that, described overcoat is made up of coat body and end cap, coat body is cylindrical body and two ends have opening, end cap is provided with through hole, the cross section of this end cap is convex shape, and the bigger diameter end of end cap is fixedly connected with coat body.
10. improvement micrometer inside caliper according to claim 7, it is characterized in that, also comprise a sheath, one end of this sheath is closed the other end and is had opening, the side wall surface of sheath is symmetrical arranged a pair through hole, the two ends of sliding inner sleeve are passed from the through hole sheath respectively, and the middle part with container cavity of sliding inner sleeve is supported in the cavity of sheath.
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| CN201310371382.4A CN103512443B (en) | 2013-08-22 | 2013-08-22 | Improvement micrometer inside caliper |
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| CN103512443B true CN103512443B (en) | 2016-02-17 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104019722A (en) * | 2014-06-09 | 2014-09-03 | 马鞍山方圆动力科技有限公司 | Inner diameter gauge |
| CN106500569B (en) * | 2016-12-28 | 2024-03-26 | 岳阳大陆激光技术有限公司 | Major diameter hole measuring tool |
| CN112880623B (en) * | 2020-11-30 | 2023-06-20 | 江苏省灌溉总渠管理处 | Concentric measuring device and method for unit |
| CN114543610B (en) * | 2021-12-31 | 2023-07-21 | 西安航天计量测试研究所 | Measuring rod verification device and measuring rod verification method for micrometer calibration |
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| CN2106350U (en) * | 1989-11-03 | 1992-06-03 | 张志明 | Portable multifunctional micrometer |
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| CN103512443A (en) | 2014-01-15 |
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