CN204924129U - Interior pitch diameter measuring tool - Google Patents
Interior pitch diameter measuring tool Download PDFInfo
- Publication number
- CN204924129U CN204924129U CN201520565821.XU CN201520565821U CN204924129U CN 204924129 U CN204924129 U CN 204924129U CN 201520565821 U CN201520565821 U CN 201520565821U CN 204924129 U CN204924129 U CN 204924129U
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- micrometer
- female thread
- internal thread
- thread
- joint
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The utility model belongs to a machinery relates to an interior pitch diameter measuring tool who detects multiple screw threads such as metric thread, trapezoidal thread, the graceful screw thread of buddhist nun, including spherical contact, internal thread micrometer joint, internal thread micrometer, internal thread thousand / connect with internal thread micrometer size cooperatees, the both ends of internal thread micrometer are installed the internal thread micrometer respectively and are connected, the mounting dimension of internal thread micrometer joint department is rather than the spherical contact of matched with. The utility model discloses an it provides one kind and calculates the pitch diameter value according to the measured value and guarantee the simple structure of the requirement of 0.40 tolerance of user control fit -up gap, simple to operate and measure accurate interior pitch diameter measuring tool to overcome not enough among the above -mentioned prior art.
Description
Technical field
The utility model belongs to mechanical field, relates to a kind of thread pitch diameter measurer detecting the multiple screw threads such as metric thread, acme thread, Niemann screw thread.
Background technology
In nut process, female thread pitch diameter Survey control is most important, affects follow-up assembly quality.Whether qualifiedly detect internal thread, normally first processing and fabricating screw thread sample post, by being then qualified before, internal thread size is represented with tightness, cannot determine the actual value of screw thread, the tolerance of also just cannot ensure that user controls 0.40, cannot meet the requirement of fit-up gap 0.40-0.80.We have purchased female thread micrometer afterwards, but be only applicable to check metric thread, because domestic general maximum detection specification is M300, P≤7, for specification at more than M300, other screw threads such as the metric thread of P>7 and Niemann screw thread, acme thread cannot use existing measurer to measure, Given this, we have designed and produced female thread micrometer joint, and buy the ball of prototype gear, coordinate female thread micrometer to make thread pitch diameter measurer, coordinate outside micrometer to use, measure nut central diameter value.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned deficiency of the prior art and provides that a kind of to calculate that central diameter value ensures that user controls the structure of the requirement of fit-up gap 0.40 tolerance according to measured value simple, easy for installation and measure thread pitch diameter measurer accurately.
The technical solution of the utility model is achieved in that a kind of thread pitch diameter measurer, comprise ball and female thread micrometer, in this, diameter measuring tool also comprises female thread micrometer joint, described female thread micrometer joint and described female thread micrometer matching size close, female thread micrometer joint is installed, the ball that described female thread micrometer joint installation dimension matches with it in one end of described female thread micrometer.
Described female thread micrometer joint one end and female thread micrometer are threaded connection, the other end screw on female thread micrometer gauge head cover after coordinate with ball.
The good effect that the technical solution of the utility model produces is as follows: use female thread micrometer joint, can range extension.As when measuring metric thread, domestic female thread micrometer maximum range is M300, and larger screw thread then cannot be measured.Use female thread micrometer joint just can measure, according to tested pitch diameter of thread value, make and select suitable milscale joint, be arranged on female thread micrometer, two ends add upper contact head and just can measure.In addition, use ball, add the kind measuring screw thread.As when measuring Niemann screw thread, measurement in the past uses sample post to detect, and can not accurately draw central diameter value, cannot extrapolate fit-up gap.Because the tooth form of Niemann screw thread is different from STRTHD, common gauge head cannot be used.According to pitch, select suitable ball, ensure contact can not with tooth at the bottom of have interference, and points of tangency is near central diameter place, derives formula, represents the relation of central diameter value and measured value, calculates measured value.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model female thread micrometer.
Fig. 2 is the structural representation of the utility model female thread micrometer joint.
Fig. 3 is the structural representation of the utility model ball.
Fig. 4 is the structural representation of the utility model thread pitch diameter measurer.
Be labeled as in figure: 1, female thread micrometer; 2, female thread micrometer joint; 3, ball; 4, gauge head cover.
Embodiment
A kind of thread pitch diameter measurer, as shown in Figure 1,2,3, 4, for detecting the measurement of the multiple thread, internal thread central diameter values such as metric thread, acme thread, Niemann screw thread, comprise ball 3, female thread micrometer 1 and female thread micrometer joint 2, described female thread micrometer joint and described female thread micrometer matching size close, female thread micrometer joint is installed, the ball that described female thread micrometer joint installation dimension matches with it in one end of described female thread micrometer.
Described female thread micrometer joint one end and female thread micrometer are threaded connection, the other end screw on female thread micrometer gauge head cover 4 after coordinate with ball.
Be the screw thread of M330*6 for specification, domestic female thread micrometer maximum specification is 275-300, select length be 50 milscale joint, range expands as 325-350; Be the screw thread of M315*6 for specification, select milscale specification to be 275-300, select length be 25 milscale joint, range expands as 300-325; Just can measure.
According to measured internal thread kind, select corresponding ball, ensure that contact can not have interference with Bottom of Thread, and points of tangency is near central diameter place.Such as internal thread specification Nie220*16, select Φ 6 contact, tangent position and middle line close, do not contact at the bottom of tooth, can use; Metric thread then can select diameter to be that the contact of 0.5P is measured, and as M325*10 screw thread, can select Φ 5 contact, tangent position and middle line close, do not contact at the bottom of tooth.
During installation, with spanner, former specification female thread micrometer gauge head cover is unclamped, the self-control joint of appropriate length is selected to be connected to screw-thread micrometer according to tested dimension of inner screw thread, the contact of gauge head cover, the selection appropriate size of screwing on, selects contact, can not with tooth at the bottom of have interference, and points of tangency is near central diameter place, then install ball, fixed.The scope of computation and measurement value, CAXA maps, and trigonometric function calculates and derives formula, represent the relation of central diameter value and measured value, according to the requirement of user's central diameter value, calculate the scope of measured value, when measuring metric thread, select the contact of 0.5* pitch, drawing, it is known to calculate: (central diameter value+0.366P)
+ (0.5P)
=detected value, in formula, P is pitch, actually adds man-hour, and central diameter value scope user required substitutes into formula, can draw detected value scope.With the use of corresponding external thread mike, determine the turn scope of diameter measuring tool microdrum in nut.Measure respectively at nut entrance, interlude, outlet section during measurement, ensure measurement accuracy.
Claims (2)
1. a thread pitch diameter measurer, comprise ball and female thread micrometer, it is characterized in that: in this, diameter measuring tool also comprises female thread micrometer joint, described female thread micrometer joint and described female thread micrometer matching size close, female thread micrometer joint is installed, the ball that described female thread micrometer joint installation dimension matches with it in one end of described female thread micrometer.
2. a kind of thread pitch diameter measurer according to claim 1, is characterized in that: described female thread micrometer joint one end and female thread micrometer are threaded connection, the other end screw on female thread micrometer gauge head cover after coordinate with ball.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520565821.XU CN204924129U (en) | 2015-07-31 | 2015-07-31 | Interior pitch diameter measuring tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520565821.XU CN204924129U (en) | 2015-07-31 | 2015-07-31 | Interior pitch diameter measuring tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204924129U true CN204924129U (en) | 2015-12-30 |
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ID=54973246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520565821.XU Active CN204924129U (en) | 2015-07-31 | 2015-07-31 | Interior pitch diameter measuring tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204924129U (en) |
Cited By (2)
| 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 |
| CN114459318A (en) * | 2022-01-12 | 2022-05-10 | 中信重工机械股份有限公司 | Major-diameter internal thread pitch diameter measuring device and method |
-
2015
- 2015-07-31 CN CN201520565821.XU patent/CN204924129U/en active Active
Cited By (3)
| 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 |
| CN114459318A (en) * | 2022-01-12 | 2022-05-10 | 中信重工机械股份有限公司 | Major-diameter internal thread pitch diameter measuring device and method |
| CN114459318B (en) * | 2022-01-12 | 2024-04-26 | 中信重工机械股份有限公司 | Device and method for measuring pitch diameter of large-diameter internal thread |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180803 Address after: 459000 531 Industrial Park of tiger ridge industrial cluster, Jiyuan, Henan Patentee after: Henan Zhongyuan special steel equipment manufacturing Co., Ltd. Address before: 459000 Xiao Zhai, Jiyuan Town, Jiyuan City, Henan Patentee before: Zhongyuan Special Steel Co., Ltd. |