CN203824453U - Bidirectional detection micrometer - Google Patents
Bidirectional detection micrometer Download PDFInfo
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- CN203824453U CN203824453U CN201320841548.XU CN201320841548U CN203824453U CN 203824453 U CN203824453 U CN 203824453U CN 201320841548 U CN201320841548 U CN 201320841548U CN 203824453 U CN203824453 U CN 203824453U
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Abstract
The utility model relates to a bidirectional detection micrometer. The bidirectional detection micrometer is characterized in that three measuring rods and three measuring heads are arranged on a micrometer body and can be combined to measure the inner diameter and the outer diameter of a workpiece. Bidirectional scale values capable of displaying the inner diameter size and the outer diameter size are arranged on the left moving measuring rod and the right moving measuring rod. The functions of detecting inner diameters, outer diameters, square grooves, arc grooves, pipe walls, limit tolerance and other sizes are achieved while the inner diameter and the outer diameter of the workpiece are measured to the maximum. According to the utility model, a brand-new multifunctional detection gauge is provided for the field of mechanical manufacturing and machining.
Description
Technical field
The utility model relates to a kind of milscale of machine-building fields of measurement, has the two-way detection milscale that detects internal diameter and external diameter two direction size functions especially simultaneously.
Background technology
In machine-building processing, diversity and singularity due to all kinds of workpieces, the survey instrument that dissimilar workpiece adopts and measuring method are not identical yet, such as the routine measurement measurer at present internal diameter and external diameter being adopted has vernier caliper, milscale, dial bore gage etc., and really pretty troublesome with going again to check with outside micrometer after dial bore gage measurement endoporus, also exist simultaneously and repeatedly shift the error of proofreading.At present according to the shape difference of workpiece, groove vernier caliper, screw-thread micrometer, gear common normal milscale, wall thickness micrometer gauge and all kinds of digimatic micrometers etc. have been there are, all milscale measurers are when detecting workpiece size, can only meet the measuring ability that detects internal diameter size or a direction of outside dimension, can not possess the measuring ability of the size that detects internal diameter and external diameter both direction simultaneously.Although common calliper has the measuring ability of measuring internal diameter and external diameter two directions simultaneously, especially two-sided slide caliper, but the measuring accuracy of these ordinary measring tools is not ideal enough, larger to measuring the error that actual result produces, especially as the detection of product quality to the requirement of the precision measuringtoll particular importance that just seems.People are when detection limit tolerance dimension at present, what generally use is a kind of limit micrometer of two measuring staffs combinations side by side up and down, also be just exclusively used in the check of the excircle dimension of axial workpiece, internally hole dimension is measured or is checked, and generally to the detection of workpiece diameter, still relies on special-purpose micrometer inside caliper or dial bore gage or internal diameter plug gauge to detect.Also do not have in the market a kind of milscale to there is the function that detects internal diameter size and outside dimension simultaneously." a kind of inner diameter measurement milscale " that the utility model people is 2011103228533 at the application number of 2011.11.12 and Weifang technical college cooperation application, although be also to realize the detection to workpiece diameter dimension limit by two milscales arranged side by side, but also there is in the use the limitation that is subject to the restriction of workpiece shape size, in the respective outer side edges of its driving parts, close and fasten precision not, the driving error producing and all desirable not enough above measurement function scope, especially cannot carry out especially to the detection of outside dimension; The various special measuring tools that other one directions are measured are in the market also too dull in sensing range, comprehensive not, economical not in practicality, especially convenient, fast not, accurate when detecting workpiece dimension limit tolerance, use in function and have some limitations, the transmission principle of milscale, structure, material and measuring ability performance are not applied to optimum efficiency.
Summary of the invention
In order to solve the problem of above-mentioned milscale application of principle, material application and Function deficiency, the utility model provides a kind of brand-new two-way detection milscale that can simultaneously realize detection internal diameter and external diameter two direction size functions.
The two-way detection milscale of the utility model addresses the above problem adopted technical scheme and is: the measuring staff and the gauge head that on blade, are provided with 3 inside and outside footpath orientation measurements, in the middle of it, fixedly measuring staff is positioned at the centre that blade is measured axis, fixedly measuring staff the right and left has 2 with the mobile measuring staff of inside and outside footpath double scale value, the measurement axis of the mobile measuring staff of the right and left is consistent with the measurement axis of middle fixedly measuring staff, and fixedly to two edge direction straight-line displacements, carrys out display measurement value in measuring staff center by centre; Fixedly the gauge head of measuring staff and mobile measuring staff is brachycephalic, also comprises bulb-shaped or oval head dummy; Fixedly contacting between the gauge head of measuring staff and the gauge head of mobile measuring staff comprises that sphere contacts with line with 55 ° of concave surfaces, line with 60 ° of concave surfaces, 55 ° of convex surfaces with plane, 60 ° of convex surfaces with line, plane with the conical surface, plane with plane, the conical surface with sphere, sphere; The shape that the right and left moves measuring staff comprises curved head type or straight rod type; The curved head type shape that the right and left moves measuring staff also comprises the U-shaped elbow shape that can detect endoporus internal channel; The move mode that the right and left moves measuring staff comprises straight-line displacement or swing offset; Fixedly the fixed form of measuring staff comprises integral type or detachable; Fitting plane when fixedly measuring staff is detachable and the right and left straight rod type move the axis plane parallel of measuring staff and vertical with gauge head plane; Measured value display mode comprises that mechanical drive scale shows or electronic digital display numeral shows; The multiple measurement that measuring staff gauge head is internal, external diameter orientation measurement mode comprises the measurement of internal diameter limit tolerance, the measurement of external diameter limit tolerance, internal diameter and outside dimension, larger aperture measurement, larger outside diameter measuring, groove are measured, arc groove is measured, wall thickness measuring, and sensing range comprises limit tolerance size and stock size.
The beneficial effect that the utility model reaches is: for machine-building in-process measurement detects, provide a kind of brand-new new multi-purpose precision measuringtoll, solved a difficult problem of utilizing a milscale just can synchronously detect internal diameter, outside dimension, especially more flexible, convenient, fast when detecting workpiece dimension limit tolerance, accurately, make transmission principle, structure, material and the measuring ability of milscale obtain splendid performance, and realized the multiplex function of a chi.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, architectural feature of the present utility model and accompanying drawing title are further illustrated, to do in conjunction with specific embodiments, clearly describe.
Fig. 1 is two-way detection milscale agent structure schematic diagram;
Fig. 2 is two-way detection milscale main body partial schematic sectional view;
Fig. 3 is the cut-open view of two-way detection milscale adjusting knob A-A;
Fig. 4 is the cut-open view of two-way detection milscale B-B;
Fig. 5 is that two-way detection milscale is transmission shaft schematic diagram;
Fig. 6 is two-way detection milscale stop sleeve structural representation;
Fig. 7 is two-way detection milscale round head screw schematic diagram;
Fig. 8 is two-way detection milscale microdrum front view;
Fig. 9 is two-way detection milscale microdrum cut-open view;
Figure 10 is two-way detection milscale adjusting knob cross-sectional schematic;
Figure 11 is that two-way detection milscale internal diameter dimension limit lower deviation detects schematic diagram;
Figure 12 is that the two-way detection milscale internal diameter dimension limit upper deviation detects schematic diagram;
Figure 13 is that two-way detection milscale external diameter dimension limit lower deviation detects schematic diagram;
Figure 14 is that the two-way detection milscale external diameter dimension limit upper deviation detects schematic diagram;
Figure 15 is that two-way detection milscale detects internal diameter large-size schematic diagram;
Figure 16 is that two-way detection milscale detects external diameter large-size schematic diagram;
Figure 17, Figure 18 are that two-way detection milscale detects schematic diagram to the dimension of inner and outer diameters of same workpiece;
Figure 19 is that two-way detection milscale detects tube wall size schematic diagram;
Figure 20 is that two-way detection milscale detects square trench, arc groove, endoporus, outside dimension schematic diagram;
Figure 21 is that the digital display of two-way detection milscale detects milscale schematic appearance.
In Fig. 1-Figure 21: blade 1, fixedly measuring staff 11, and fixedly measuring staff gauge head 12, thermal insulation board 13, fastening screw for heat shield 14, digimatic micrometer is adjusted reset key 15, digimatic micrometer digital display screen 16, tie down screw handle 17; The measuring staff 2 that moves right, the measuring staff gauge head 21 that moves right, measuring staff internal diameter scale value 22 moves right, measuring staff external diameter scale value 23 moves right, move left measuring staff 24, move left measuring staff gauge head 25, move left measuring staff internal diameter scale value 26, move left measuring staff external diameter scale value 27, chock 28, fabrication hole 29, mobile measuring staff internal thread 210, the straight wall 211 of arc groove, arc groove sphere 212; Stop sleeve 3, bulb dog screw screw 31, stop sleeve coordinates periphery 32, stop sleeve groove 33 with blade; Microdrum 4, calibration adjustments hole 41, right differential cylinder scale value 42, microdrum scale value datum line 43, left differential cylinder scale value 44, left differential cylinder 45, microdrum set screw hole 46, microdrum scale mark 47; Adjusting knob 5, handle ratchet wheel 51, adjusting knob threaded hole 52, adjusting knob and round head screw matching thread 53, ratchet rod 54, spring 55; Round head screw 6; Transmission shaft 7, screw rod 71, ratchet rod mounting hole 72, transmission shaft adjusting knob positioning groove 73, oil storage tank 74; Bulb dog screw 8, bulb dog screw periphery 81, bulb dog screw sphere 82.
Below in conjunction with above-mentioned accompanying drawing title and technical scheme, the method that specifically practices of the present utility model is elaborated.
Embodiment
Referring to Fig. 1-Figure 21, structure annexation and the transmission principle of the two-way detection milscale of the utility model are as follows: the centre position on blade 1 is provided with fixedly measuring staff 11, fixedly measuring staff 11 is provided with the fixedly measuring staff gauge head 12 with round end foremost, thermal insulation board 13 on blade 1, to eliminate the temperature difference of measuring process; Fastening screw for heat shield 14 is fixed its thermal insulation board; Digimatic micrometer is adjusted reset key 15 and is used in combination with digimatic micrometer digital display screen 16, is exclusively used in this and invents two-way digital display detection milscale, and its digital display structural principle belongs to known technology, in this instructions and accompanying drawing, repeats no more; It is used or testing process after, pin that to be detected numerical value used that tie down screw handle 17 pins scale when determining dimension limit numerical value; The measuring staff gauge head 21 that moves right moving right on measuring staff 2 is used in conjunction with the fixedly measuring staff gauge head 12 on middle fixedly measuring staff 11, or is used in conjunction with the measuring staff gauge head 25 that moves left moving left on measuring staff 24; In like manner, move right measuring staff internal diameter scale value 22 and the measuring staff external diameter scale value 23 of moving right for the measuring staff gauge head 21 that moves right is with middle fixedly measuring staff gauge head 12 or move left the numerical value that measuring staff gauge head 25 is used in conjunction with measurement; Move left measuring staff internal diameter scale value 26 and move left measuring staff external diameter scale value 27 and be also in like manner used in conjunction with the numerical value of measurement with the fixedly measuring staff gauge head 12 of centre or the measuring staff gauge head 21 that moves right on the right; Chock 28 on mobile measuring staff 2 and fabrication hole 29 are mainly the processing technology of mobile measuring staff internal thread 210 machining preparations; Bulb dog screw periphery 81 on the straight wall 211 of arc groove on mobile measuring staff 2 and arc groove sphere 212 and bulb dog screw 8 and bulb dog screw sphere 82 match and incompatible mobile measuring staff 2 are controlled in the error of axial displacement and radial displacement; Stop sleeve 3 is provided with bulb dog screw screw 31, is used for connecting ball head dog screw 8; Blade on stop sleeve 3 coordinates periphery 32 to be mainly used to control the annexation of stop sleeve 3 and blade 1; Stop sleeve groove 33 for and microdrum 4 between be located by connecting; When this is invented two-way detection milscale and starts to proofread 0 scale, if there is micro-deviation to regulate by calibration adjustments hole 41, and to take right differential cylinder scale value 42 and microdrum scale value datum line 43 be reference data; Left differential cylinder scale value 44 and left differential cylinder 45 use with detect and debug in identical with right differential cylinder scale value 42 and microdrum 4 using method, and be used in conjunction with right differential cylinder scale value 42 and microdrum 4 in certain measuring method; Microdrum set screw hole 46 is used for positioning ball, spring and screw are installed; Microdrum scale mark 47 is used in conjunction with and proofreads with microdrum scale value datum line 43; Handle ratchet wheel 51 and the dynamics that is arranged on ratchet rod 54 on transmission shaft 7 and is used in conjunction with the workpiece institute knob that 5 pairs of regulating and controlling knobs will detect on adjusting knob 5; Adjusting knob threaded hole 52 is also used for positioning ball, spring and screw are installed; Adjusting knob and round head screw matching thread 53 are for installing round head screw 6; On the handle ratchet wheel 51 of the elastic force that ratchet rod 54 acts on by spring 55 on adjusting knob 5, play a role, with the elastic force of this spring, carry out the dynamometry of 5 pairs of workpiece of regulating and controlling knob; Screw rod 71 on transmission shaft 7 is used for to the connection of mobile measuring staff 2 and transmission, and ratchet rod mounting hole 72 and transmission shaft adjusting knob positioning groove 73 and oil storage tank 74 are mainly used in the lubricated and regulating action to the handle ratchet wheel 51 on adjusting knob 5.
Main architectural feature and the drive connection of the two-way detection milscale of the utility model is: blade both sides are respectively provided with a set of novel transmission mechanism (referring to accompanying drawing 2-10), be with the difference of traditional milscale maximum, although the measuring staff of the right and left is also by the transmission that is rotatably connected of traditional screw rod, but the transmission being reflected on measuring staff is to make measuring staff straight-line displacement rather than swing offset, thereby make the gauge head of the right and left can make the curved endoporus to workpiece to detect; Because singularity and the gauge head of its straight-line displacement designs cleverly, so this invention possessed the function to internal diameter and the two-way detection of external diameter, thereby has been born a kind of novel measurer and characterization processes method.
The two-way detection milscale detection kind of the utility model and method are as follows:
The detection of two-way detection milscale to internal diameter dimension limit;
With reference to Figure 11, Figure 12, if the endoporus dimension limit of survey workpiece is 34
mm, first the both sides of the fixedly measuring staff gauge head 12 in the middle of this two-way detection milscale are carried out to verification with the gauge head 25 of the right and left and 21 round end outside to conventional milscale or special-purpose internal diameter verification rule respectively, and by the size calibration on both sides to 25mm position, during calibration reference size, the mobile measuring staff on both sides is calibrated to both sides displacement by centre, to eliminate the gap error of transmission shaft screw thread.Then the detection of two groups of gauge heads of the right and left is sized to workpiece two dimension limits to be detected, if the right is 34.00mm, the left side is 34.05mm, then by 17 lockings of tie down screw handle.When needs detect internal diameter dimension limit minimum value Dmin(34.00mm) time, the fixing left side of measuring staff gauge head 12 is contacted workpiece inwall with the right of the measuring staff gauge head 21 that moves right, to detect the internal diameter dimension limit minimum value Dmin(34.00mm of workpiece) (as Figure 11), as two gauge heads, put in detected endoporus, just illustrated that endoporus physical size has met the minimum value Dmin(34.00mm of dimension limit); But do not represent the dimension limit maximal value Dmax(34.05mm of interior hole dimension now) meet the requirements; Now must be by the dimension limit maximal value Dmax(34.05mm on one group, the left side just now setting) this endoporus is detected, during detection, fixing the right of measuring staff gauge head 12 is contacted to (as Figure 12) with the left side that moves left measuring staff gauge head 25 to workpiece inwall, if two gauge heads have also been put in detected endoporus, just illustrate that endoporus physical size has exceeded dimension limit maximal value Dmax(34.05mm); If two gauge heads cannot be put in detected endoporus, illustrate that the internal diameter dimension limit of this detected workpiece has met tolerance.
The detection of two-way detection milscale to external diameter dimension limit;
Referring to Figure 13 and Figure 14, if the external diameter dimension limit of survey workpiece is 9
mm, in like manner, the external diameter dimension limit detection method of workpiece is identical with internal diameter dimension limit detection method, different is opposite direction, such as, first external diameter dimension limit carry out verification with the gauge head 25 of the right and left and 21 round end inner side to conventional milscale standard lining bar or other gauge blocks respectively by the both sides of the fixedly measuring staff gauge head 12 in the middle of this two-way detection milscale before detecting, and after detecting three gauge heads simultaneously and contacting the external diameter scale value on the mobile measuring staff of the right and left in 0mm position, during calibration reference size by the mobile measuring staff on both sides by capable calibration of export-oriented interposition shift-in, to eliminate the gap error of transmission shaft screw thread.Whether external diameter dimension limit meets the requirements, the dimension limit minimum value Dmin(9.00mm of its two groups of gauge heads) and dimension limit maximal value Dmax(9.05mm) detecting judgement opposite direction with comparing in direction with internal diameter dimension limit of measured workpiece, that is: as dimension limit minimum value Dmin(9.00mm) one group of gauge head while having streaked the cylindrical maximized surface of measured workpiece, the cylindrical physical size of this measured workpiece is less than dimension limit minimum value Dmin(9.00mm), be overproof workpiece, as dimension limit minimum value Dmin(9.00mm) one group of gauge head sliding only during the cylindrical maximized surface of measured workpiece, the cylindrical physical size of this measured workpiece has met dimension limit minimum value Dmin(9.00mm) requirement, but now do not represent the dimension limit maximal value Dmax(9.05mm of this measured workpiece) also meet the requirements, therefore another must be organized to dimension limit maximal value Dmax(9.05mm) gauge head detects excircle of workpiece, if now two gauge heads are also during the cylindrical maximized surface of sliding only measured workpiece, the physical size that this workpiece is described has been greater than dimension limit maximal value Dmax(9.05mm).Only have as dimension limit minimum value Dmin(9.00mm) one group of gauge head sliding only the cylindrical maximized surface of measured workpiece, when one group of gauge head and dimension limit maximal value Dmax(9.05mm) has slipped over the cylindrical maximized surface of measured workpiece, just illustrate that the physical size of workpiece, in the limit tolerance range of size of regulation, is certified products.
Two-way detection milscale is to compared with the measurement of large diameter or outside dimension;
Referring to Figure 15 and Figure 16, when needs are measured compared with large diameter workpiece, can adopt the combined measuring method of the right and left gauge head, with the left side that moves left measuring staff gauge head 25 and the right of the measuring staff gauge head 21 that moves right, remove to contact the endoporus inwall of workpiece, before measuring, measuring staff is fixed in certain position on one side, with another side measuring staff, complete verification, surveying work, method of calibration is equal to above inner diameter measurement method of calibration, and measured numerical value calculates in conjunction with middle measuring head diameter with the displacement on both sides.
The measurement of two-way detection milscale to the internal diameter of same workpiece and outside dimension;
Referring to Figure 17 and Figure 18, when the internal diameter of workpiece and the physical size of external diameter are in the measurement range of the right and left measuring staff of this two-way detection milscale, can measured workpiece be measured fast or be checked by the method for scale.
The measurement of two-way detection milscale to tube wall thickness size;
Referring to Figure 19, if the wall thickness dimension of survey workpiece is pipe thickness that 5mm works as pipe part need to measure or check time, can combine to detect with the measuring staff gauge head on both sides with the fixedly measuring staff gauge head of centre equally.This function can directly replace existing micrometer for pipe wall.In certain scope, can also and highly measure and check the length of non-cylindrical work piece, width simultaneously.
The measurement of two-way detection milscale to narrow type groove and arc groove and inside and outside footpath;
Referring to Figure 20, singularity due to the gauge head of this two-way detection milscale, therefore when running into narrow type groove d1, arc groove d3 that existing universal outer diameter milscale cannot measure and endoporus D1, this two-way detection milscale can detect the measured surface of above-mentioned workpiece at axis basal plane orientation D2 and the radial circumference direction d2 of workpiece, really realize the function of internal diameter, the two-way detection of external diameter, and reached the multiplex effect of a chi.
Referring to Figure 21, this two-way detection milscale comprises " the two-way digital display detection milscale " with digital display function, its sensor construction and displaying principle, method belong to digimatic micrometer field known technology, can the various digital display modes of dual-purpose under the prerequisite that does not affect the utility model mechanical transmission structure or principle, comprise that swing offset induction shows or straight-line displacement induction display mode.Its any known digital display mode application on the two-way detection milscale of the utility model all belongs to range of application of the present utility model, also belongs to the scope that the utility model application is protected.
Special instruction, this invents the significant improvement that the novel measurer of two-way detection milscale and detection technique have been done with reference to multinomial Patents before the utility model people, therefore, aspect the description of its part-structure title with reference to and quoted the expression method before part, its objective is and be convenient to auxiliary expression and present core of the present utility model variation part completely.The similar improvement of having done according to the utility model transmission principle, architectural feature and characterization processes method all belongs to the scope of the utility model rights protection.
The two-way detection milscale of the utility model is by designing cleverly, make milscale possess the function that detects internal diameter, external diameter, square groove, arc groove, tube wall, limit tolerance equidimension, in the situation that the measurement function that meets polymorphic type workpiece provides a kind of brand-new measurer for machine-building manufacture field simultaneously.This two-way detection milscale will play facilitation to machine-building processing industry and the manufacturing development of measurer.
Claims (9)
1. two-way detection milscale, is characterized by: the measuring staff and the gauge head that on blade, are provided with 3 inside and outside footpath orientation measurements; Middle fixedly measuring staff is positioned at the centre that blade is measured axis, and each measurement axis with the mobile measuring staff of inside and outside footpath double scale value of 2 of left and right and centre fixedly the measurement axis of measuring staff are consistent, and with centre fixedly measuring staff center to two edge direction straight-line displacements.
2. two-way detection milscale according to claim 1, is characterized by: fixedly the gauge head of measuring staff and mobile measuring staff comprises bulb-shaped or oval head dummy.
3. two-way detection milscale according to claim 1, is characterized by: fixedly contacting between the gauge head of measuring staff and the gauge head of mobile measuring staff comprises that sphere contacts with line with 55 ° of concave surfaces, line with 60 ° of concave surfaces, 55 ° of convex surfaces with plane, 60 ° of convex surfaces with line, plane with the conical surface, plane with plane, the conical surface with sphere, sphere.
4. two-way detection milscale according to claim 1, is characterized by: the shape that the right and left moves measuring staff comprises curved head type or straight rod type; The curved head type shape that the right and left moves measuring staff comprises the U-shaped elbow shape that can detect endoporus internal channel.
5. two-way detection milscale according to claim 1, is characterized by: the move mode that the right and left moves measuring staff comprises straight-line displacement or swing offset.
6. two-way detection milscale according to claim 1, is characterized by: fixedly the fixed form of measuring staff comprises integral type or detachable.
7. according to the two-way detection milscale described in claim 1 or 4 or 6, it is characterized by: fixedly the fitting plane of measuring staff and the right and left straight rod type move the axis plane parallel of measuring staff and vertical with gauge head plane.
8. two-way detection milscale according to claim 1, is characterized by: the display mode of straight-line displacement amount comprises that mechanical drive scale shows or electronic digital display numeral shows.
9. two-way detection milscale according to claim 1, it is characterized by: the multiple measurement that measuring staff gauge head is internal, external diameter orientation measurement mode comprises the measurement of internal diameter limit tolerance, the measurement of external diameter limit tolerance, internal diameter and outside dimension, larger aperture measurement, larger outside diameter measuring, groove are measured, arc groove is measured, wall thickness measuring, and sensing range comprises limit tolerance size or stock size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320841548.XU CN203824453U (en) | 2013-12-20 | 2013-12-20 | Bidirectional detection micrometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320841548.XU CN203824453U (en) | 2013-12-20 | 2013-12-20 | Bidirectional detection micrometer |
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| CN203824453U true CN203824453U (en) | 2014-09-10 |
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| CN201320841548.XU Expired - Fee Related CN203824453U (en) | 2013-12-20 | 2013-12-20 | Bidirectional detection micrometer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103673805A (en) * | 2013-12-20 | 2014-03-26 | 苏州蓝王机床工具科技有限公司 | Bidirectional detection micrometer |
| CN111174741A (en) * | 2020-01-21 | 2020-05-19 | 江苏理工学院 | Measuring device for cylindrical part with inner hole |
-
2013
- 2013-12-20 CN CN201320841548.XU patent/CN203824453U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103673805A (en) * | 2013-12-20 | 2014-03-26 | 苏州蓝王机床工具科技有限公司 | Bidirectional detection micrometer |
| CN103673805B (en) * | 2013-12-20 | 2016-06-08 | 苏州蓝王机床工具科技有限公司 | Two-way detection micrometer |
| 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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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140910 Termination date: 20141220 |
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| EXPY | Termination of patent right or utility model |