CN209197644U - It is a kind of for measuring the measuring device of size screw thread central diameter - Google Patents
It is a kind of for measuring the measuring device of size screw thread central diameter Download PDFInfo
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- CN209197644U CN209197644U CN201822136111.1U CN201822136111U CN209197644U CN 209197644 U CN209197644 U CN 209197644U CN 201822136111 U CN201822136111 U CN 201822136111U CN 209197644 U CN209197644 U CN 209197644U
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Abstract
The utility model provides a kind of for measuring the measuring device of size screw thread central diameter, including screw thread calibrating plate and measuring tool component, measuring tool component includes quantitative bar, main scale, auxiliary scale, measurement arm, measurement screw rod, measurement wheel, standard thread is provided on screw thread calibrating plate, quantitative bar and main scale are separately connected measurement screw rod after connecting into retractable structure, measurement wheel is connected on measurement screw rod, measurement wheel outer surface is provided with the adjustment screw thread being meshed with standard thread.Using the technical solution of the utility model, when using the measuring device, the pitch diameter of thread to be measured is estimated first, corresponding screw thread calibrating plate and measuring tool component, correction measuring tool component is selected to obtain correction average value, is measured using measuring tool component and is obtained measured value, calculates and obtain actual measured value；Measuring device application method is close with ordinary micrometer, easy to promote and utilize, and measurement method improves measurement accuracy, obtain true and reliable actual measured value by calibrating with screw thread calibrating plate.
Description
Technical field
The utility model relates to measuring device technical fields, refer in particular to a kind of for measuring the survey of size screw thread central diameter
Measure device.
Background technique
In aviation machine processing, the central diameter of Large-scale thread, since such part pitch diameter of thread position is unobvious, size is big
It is not easy to measure, the central diameter size of such major thread generallys use traditional detection method: first is that measuring using screw gauge, screw thread
Drift passes through, and screw thread no-go gage cannot by can the qualification of indirect judgement thread size lead to but since the thread size is big
The weight weight of no-go gage, the quality of go-no go gauge designed and manufactured directly affect the measurement of screw thread.And have when drift manufacture certain
Form and position error, will lead to the size of the central diameter size limit on the upper side of measurement, cause measurement inaccuracy.In addition, since screw thread is set
Meter requires not only go-no go gauge measurement qualified, but also requires to measure the central diameter size actual value of screw thread, and use screw gauge
Measurement can not measure actual value.Second is that using the indirect methods of measurement such as three-needle measuring method or the rigid pearl calculating of plug, according to formula meter
The pitch diameter of thread is calculated, not only measurement accuracy is low for this method, but also cumbersome, and requirement is unable to satisfy in mass detection.
Third is that measuring the pitch diameter of thread using mechanical pick-up device formula central diameter ruler, this method not only measures inconvenience, cumbersome, and
Measuring tool price.
Utility model content
In order to solve the above technical problems, the utility model provides a kind of measurement dress for measuring size screw thread central diameter
It sets.
The utility model is achieved by the following technical programs.
The utility model provides a kind of for measuring the measuring device of size screw thread central diameter, including is separated from each other placement
Screw thread calibrating plate and measuring tool component, the measuring tool component includes quantitative bar, main scale, auxiliary scale and at least two measurement arm, measurement spiral shell
Bar, measurement are taken turns, and standard thread is provided on the screw thread calibrating plate, and one end of the quantitative bar and one end of main scale pass through connection
Cylinder links together, and makes the relative distance between the quantitative bar and the main scale can be described along the quantitative bar Axial changes
Main scale mark distributed along its axial direction is provided on main scale outer peripheral surface, the auxiliary scale is sleeved on the main scale outer peripheral surface, described
Be provided with the subscale mark along its periphery EDS maps on auxiliary scale outer peripheral surface, the other end of the quantitative bar and the main scale it is another
End is connect by screw thread pair with the measurement arm respectively, and one end of the measurement screw rod is fixedly connected with measurement arm, and described
For measurement screw rod axially with the measurement arm axle to intersecting vertically, the other end of the measurement screw rod is bolted with measurement wheel, the survey
Amount wheel outer surface is provided with the adjustment screw thread being meshed with the standard thread.
Screw thread calibration pan bottom is provided at least three support legs.
The material of the screw thread calibrating plate is cast iron.
The screw thread calibration panel surface is additionally provided at least 2 pairs and is symmetrically arranged in the standard thread central axis opposite to each other
The tag line of line two sides.
The end of the measurement screw rod is also bolted with screwed retaining ring, and the measurement wheel is made to be located at the measurement arm and prevent
Between de- nut.
The measuring tool component further includes locking spring, and locking spring is sleeved on the measurement screw rod and is located at the survey
It measures between arm and measurement wheel or between measurement wheel and screwed retaining ring.
The measuring tool component further includes lock-screw, and lock-screw is bolted on the connecting cylinder, described for locking
Relative distance between quantitative bar and the main scale.
The utility model has the beneficial effects that: the technical solution of the utility model is used, in use, need to only survey two
Amount wheel is meshed with screw thread to be measured respectively, can measure to the pitch diameter of thread to be measured, application method and ordinary micrometer
Application method is identical, since two measurement wheels with the standard thread on screw thread calibrating plate by calibrating, and makes quantitative bar central axis
Line coincides with the tag line in screw thread calibration panel surface, substantially increases measurement accuracy and reliability, in addition, survey crew reads
The method of access value is identical as ordinary micrometer, receives convenient for enterprise technology personnel and uses, the measuring device of the utility model
It is simple with structure, manufacturing cost is cheap, easy to operate advantage is answered convenient for being widely popularized in all kinds of mechanic factory workers
With, in addition, when being used to measure the measuring device of size screw thread central diameter using this, using repeatedly correcting the method being averaged,
Obtain accurately correction average value, and by being corrected measuring tool component with screw thread calibrating plate, make actual measured value and to
The true value for surveying screw thread is closer, and actual measured value is reliable, substantially increases measurement accuracy.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model screw thread calibrating plate；
Fig. 2 is the structural schematic diagram of the utility model measuring tool component；
Fig. 3 is the utility model screw thread calibrating plate and measuring tool component mating connection schematic diagram；
Fig. 4 is the utility model part to be measured and measuring tool component mating connection schematic diagram；
In figure: 1- screw thread calibrating plate, 2- measuring tool component, 3- quantify bar, 4- main scale, 5- auxiliary scale, 6- measurement arm, 7- measurement spiral shell
Bar, 8- measurement wheel, 9- connecting cylinder, 10- screwed retaining ring, 11- locking spring, 12- lock-screw, 13- part to be measured, 101- standard
Screw thread, 102- support leg, 103- tag line, 401- main scale mark, 501- subscale mark.
Specific embodiment
Be described further below the technical solution of the utility model, but claimed range be not limited to it is described.
As shown in Figure 1 and Figure 2, the utility model provides a kind of for measuring the measuring device of size screw thread central diameter, wraps
Include the screw thread calibrating plate 1 and measuring tool component 2 for being separated from each other placement, measuring tool component 2 includes quantitative bar 3, main scale 4, auxiliary scale 5 and at least
2 measurement arms 6, measurement screw rod 7, measurement take turns 8, are provided with standard thread 101 on screw thread calibrating plate 1, one end of quantitative bar 3 and master
One end of ruler 4 is linked together by connecting cylinder 9, makes the relative distance between quantitative bar 3 and main scale 4 can be axial along quantitative bar 3
Change, be provided with main scale mark 401 distributed along its axial direction on 4 outer peripheral surface of main scale, auxiliary scale 5 is sleeved on 4 outer peripheral surface of main scale, secondary
The subscale mark 501 along its periphery EDS maps is provided on 5 outer peripheral surface of ruler, the other end of quantitative bar 3 and the other end point of main scale 4
Not Tong Guo screw thread pair connect with measurement arm 6, the one end for measuring screw rod 7 is fixedly connected with arm 6 is measured, and measures the axial direction of screw rod 7
With the measurement axially vertical intersection of arm 6, the other end of measurement screw rod 7 is bolted with measurement wheel 8, and 8 outer surfaces of measurement wheel are provided with and mark
The adjustment screw thread that quasi- screw thread 101 is meshed.
The technical solution of the utility model is used, in use, two measurement wheels need to be only meshed with screw thread to be measured respectively,
The pitch diameter of thread to be measured can be measured, application method is identical as the application method of ordinary micrometer, due to two measurements
Wheel makes the mark on quantitative bar central axis and screw thread calibration panel surface by calibrating with the standard thread on screw thread calibrating plate
Line coincides, and substantially increases measurement accuracy and reliability, in addition, the method for survey crew's reading numerical values and ordinary micrometer phase
Together, receiving and use convenient for enterprise technology personnel, the measuring device of the utility model is simple with structure, manufacturing cost is cheap,
Easy to operate advantage, convenient for the wide popularization and application in all kinds of mechanic factory workers, in addition, being used to measure large scale using this
When the measuring device of the pitch diameter of thread, using the method being averaged repeatedly is corrected, accurately correction average value is obtained, and pass through
It is corrected measuring tool component with screw thread calibrating plate, keeps actual measured value and the true value of screw thread to be measured closer, actual measurement
Value is reliable, substantially increases measurement accuracy.
Further, 1 bottom of screw thread calibrating plate is provided at least three support legs 102.Using the technology of the utility model
Scheme makes screw thread calibrating plate 1 convenient for horizontal positioned by support leg 102, lays a good foundation to improve measurement accuracy.
Further, the material of screw thread calibrating plate 1 is cast iron.Using the technical solution, be conducive to make screw thread calibrating plate 1 just
In carrying out long-term preservation, it is conducive to extend the service life of the utility model measuring device.
Further, 1 surface of screw thread calibrating plate is additionally provided at least 2 pairs and is symmetrically arranged in standard thread 101 opposite to each other
The tag line 103 of central axis two sides.It is mutually perpendicular to intersect at least 2 pairs in preferred identity line 103.2 measurement screw rods 7 are axial
It is parallel with respect to each other..The adjusting that relative distance between screw rod 7 is measured by this 2, can both measure external screw thread, can also be right
Internal screw thread measures.
Further, measure screw rod 7 end be also bolted with screwed retaining ring 10, and make measurement wheel 8 be located at measurement arm 6 with
Between screwed retaining ring 10.Screwed retaining ring 10 can prevent measurement wheel 8 from falling in use, be conducive to extend making for measuring device
Use the service life.
Further, measuring tool component 2 further includes locking spring 11, and locking spring 11 is sleeved on measurement screw rod 7 and position
Between measurement arm 6 and measurement wheel 8 or between measurement wheel 8 and screwed retaining ring 10.Measurement wheel 8 can be made to be measured by locking spring 11
The engagement of screw thread is closer, is conducive to reduce measurement error.
Further, measuring tool component 2 further includes lock-screw 12, and lock-screw 12 is bolted on connecting cylinder 9, for locking
The quantitatively relative distance between bar 3 and main scale 4.By lock-screw 12, rear is completed in measurement work convenient for survey crew
Just measurement numerical value is read, operating method is identical as the operating method of ordinary micrometer.
In addition, the indexing of main scale mark 401 is 1mm, the quantity of subscale mark 501 is 50.According to ordinary micrometer
Working principle, this shows that the precision of measuring device provided by the utility model can achieve 0.01mm.
In addition, as shown in Figure 3, Figure 4, when being used to measure the measuring device of size screw thread central diameter using this, including it is following
Step:
Step 1: providing part 13 to be measured, be provided with screw thread to be measured on part 13 to be measured, pre- according to existing measuring system
The central diameter for first estimating screw thread to be measured is D0；
Step 2: being D according to the central diameter of screw thread to be measured in step 10, choose nominal diameter D0Screw thread calibrating plate 1, and select
Take corresponding measuring tool component 2；
Step 3: measuring tool component 2 and screw thread calibrating plate 1 are cooperatively connected, and make standard thread 101 on screw thread calibrating plate 1
Be meshed with the adjustment screw thread of 8 outer surfaces of measurement wheel, by screw lock-screw 12 make it is opposite between quantitative bar 3 and main scale 4
Distance locking is read by main scale mark 401 and subscale mark 501 and obtains corrected value D1；Further, carry out step 3 it
Before, screw thread calibrating plate 1 is placed on horizontal table.Further, standard thread on screw thread calibrating plate 1 is made in step 3
101 with the adjustment screw thread of 8 outer surfaces of measurement wheel while be meshed, make 6 central axis of measurement arm at quantitative 3 both ends of bar respectively with
1 surface of screw thread calibrating plate at least 1 pair of tag line 103 is aligned respectively.
Step 4: horizontally rotating measurement component, makes the adjustment screw thread of 8 outer surfaces of measurement wheel and the subscript of screw thread calibrating plate 1
The different parts of quasi- screw thread 101 are meshed, and repeat step 3 i times, wherein i is natural number, passes through main scale mark 401 and secondary quarter
It spends line 501 and reads acquisition measured value Di；Further, the number for repeating step 3 in step 4 is 1 table of screw thread calibrating plate
The half of 103 line number amount of face tag line.
Step 5: it is calculated by following relationship and obtains correction average value DX:
Step 6: measuring tool component 2 and part 13 to be measured are cooperatively connected, and make screw thread to be measured and measurement on part 13 to be measured
The adjustment screw thread for taking turns 8 outer surfaces is meshed, and locks the relative distance between quantitative bar 3 and main scale 4 by screwing lock-screw 12
It is fixed, it is read by main scale mark 401 and subscale mark 501 and obtains measured value Dn；
Step 7: it is calculated by following relationship and obtains the pitch diameter of thread actual measured value D to be measured:
D=D0+(Dn-DX)。
Accurate correction is obtained using the method being averaged repeatedly is corrected using the technical solution of the utility model
Average value, and by being corrected measuring tool component with screw thread calibrating plate, make the true value of actual measured value and screw thread to be measured more
Close, actual measured value is reliable, substantially increases measurement accuracy.
Claims (7)
1. a kind of for measuring the measuring device of size screw thread central diameter, it is characterised in that: the screw thread including being separated from each other placement
Calibrating plate (1) and measuring tool component (2), the measuring tool component (2) include quantitative bar (3), main scale (4), auxiliary scale (5) and at least two
Arm (6), measurement screw rod (7), measurement wheel (8) are measured, is provided with standard thread (101) on the screw thread calibrating plate (1), it is described fixed
One end of gauge rod (3) and one end of main scale (4) are linked together by connecting cylinder (9), make quantitative bar (3) and the main scale
(4) relative distance between can be provided on described quantitative bar (3) Axial changes, main scale (4) outer peripheral surface along its axial direction
The main scale mark (401) of distribution, the auxiliary scale (5) are sleeved on the main scale (4) outer peripheral surface, on auxiliary scale (5) outer peripheral surface
Be provided with the subscale mark (501) along its periphery EDS maps, the other end of quantitative bar (3) and the main scale (4) it is another
End is connect by screw thread pair with the measurement arm (6) respectively, and one end of measurement screw rod (7) is fixedly connected with measurement arm (6),
And measurement screw rod (7) axial direction and the axially vertical intersection of the measurement arm (6), the other end spiral shell of measurement screw rod (7)
It is connected to measurement wheel (8), the measurement wheel (8) outer surface is provided with the adjustment screw thread being meshed with the standard thread (101).
2. according to claim 1 for measuring the measuring device of size screw thread central diameter, it is characterised in that: the screw thread
Calibrating plate (1) bottom is provided at least three support legs (102).
3. according to claim 1 for measuring the measuring device of size screw thread central diameter, it is characterised in that: the screw thread
The material of calibrating plate (1) is cast iron.
4. according to claim 1 for measuring the measuring device of size screw thread central diameter, it is characterised in that: the screw thread
Calibrating plate (1) surface is additionally provided at least 2 pairs and is symmetrically arranged in the standard thread (101) central axis two sides opposite to each other
Tag line (103).
5. according to claim 1 for measuring the measuring device of size screw thread central diameter, it is characterised in that: the measurement
The end of screw rod (7) is also bolted with screwed retaining ring (10), and the measurement wheel (8) is made to be located at the measurement arm (6) and anticreep
Between nut (10).
6. according to claim 5 for measuring the measuring device of size screw thread central diameter, it is characterised in that: the measuring tool
Component (2) further includes locking spring (11), and locking spring (11) is sleeved on the measurement screw rod (7) and is located at the measurement
Between arm (6) and measurement wheel (8) or between measurement wheel (8) and screwed retaining ring (10).
7. according to claim 1 for measuring the measuring device of size screw thread central diameter, it is characterised in that: the measuring tool
Component (2) further includes lock-screw (12), and lock-screw (12) is bolted on the connecting cylinder (9), described fixed for locking
Relative distance between gauge rod (3) and the main scale (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822136111.1U CN209197644U (en) | 2018-12-19 | 2018-12-19 | It is a kind of for measuring the measuring device of size screw thread central diameter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822136111.1U CN209197644U (en) | 2018-12-19 | 2018-12-19 | It is a kind of for measuring the measuring device of size screw thread central diameter |
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| CN209197644U true CN209197644U (en) | 2019-08-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109443162A (en) * | 2018-12-19 | 2019-03-08 | 贵州黎阳国际制造有限公司 | Calipers and major thread central diameter measurement method in a kind of major thread |
-
2018
- 2018-12-19 CN CN201822136111.1U patent/CN209197644U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109443162A (en) * | 2018-12-19 | 2019-03-08 | 贵州黎阳国际制造有限公司 | Calipers and major thread central diameter measurement method in a kind of major thread |
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