CN207487561U - A kind of device for measuring inner cavity flat thread pitch of holes - Google Patents
A kind of device for measuring inner cavity flat thread pitch of holes Download PDFInfo
- Publication number
- CN207487561U CN207487561U CN201721551364.4U CN201721551364U CN207487561U CN 207487561 U CN207487561 U CN 207487561U CN 201721551364 U CN201721551364 U CN 201721551364U CN 207487561 U CN207487561 U CN 207487561U
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- Prior art keywords
- copper post
- end copper
- thread
- inner cavity
- tail end
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- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
A kind of device for measuring inner cavity flat thread pitch of holes, for measuring the distance between same cavity plane upper screwed hole, including front end copper post (1), tail end copper post (2), the device overcomes the problem of detection spiral marking connection spacing can not be measured accurately, the method for reducing error is tightened by external screw-thread (2) and tested threaded hole internal thread, design the end face circular hole (21) that can be connect with measurement with center distance caliper tapered sleeve gauge head simultaneously, the spacing in same cavity flat thread hole can accurately be measured, precision is high, simple in structure.
Description
Technical field
The utility model is related to a kind of device for measuring inner cavity flat thread pitch of holes, for measuring in same inner cavity plane
The spacing of threaded hole.
Background technology
Spiral marking connection is one of most common mechanical connecting mode in machine-building, because its connection is reliable, simple in structure, system
It is convenient and widely used to make.Regular screw threads standard GB/T T197-2003 internal threads define two kinds of basic deviations of G, H and 3
~9 grades of grades of tolerance select according to requirements for designer.In practical application, some crucial and important components are coupled,
Not only internal threads precision has strict demand (such as 6G, 7H), but also to the distance between threaded hole and threaded hole to its blind screwhole
Also there is tolerance.For example, it is structural member root in structural member inner cavity approximately the same plane upper screwed hole to distance between threaded hole
According to structural member feature, a kind of inscribed threaded form designed is that structural member connect indispensable composition with inner part
Partly (being the unique fastening means being connected with internal structure).To the inspection during manufacture of these blind screwholes, not only need to examine spiral shell
Whether pit precision is qualified, it is also necessary to and whether detect the distance between the internal thread hole and same plane upper screwed hole qualified, but
The distance between threaded hole can not be detected accurately.
Although in certain production scenes using the distance between some direct methods measurement threaded hole and threaded hole, in
When the heart is away from calliper, since two measuring jaw of slide calliper rule is made of the tapered sleeve gauge heads of two standards, will with there are two tapered sleeve gauge head with
Screw hole aperture is in direct contact, and the data of acquisition can only reflect the relatively low distance in two threaded hole apertures, can not accurately measure pitch-row
True value.There are no can directly detect inspection of the inner cavity same plane upper screwed hole to distance between threaded hole in the field of inspection
Survey means.Structural member inner cavity design comparison is compact, and the position of circuit board threaded hole is designed in the case of spaces compact, thus may be used
See, accurately, easily to measure the effective dimensions between blind threaded hole and threaded hole, not general measuring method can solve
's.
Utility model content
The utility model solve the technical issues of be：Different screw threads in same inner cavity plane can not be measured for the prior art
The problem of pitch of holes, devises a kind of device for measuring inner cavity flat thread pitch of holes.
The utility model solves above-mentioned technical problem and is achieved by following technical solution：
It is a kind of measure inner cavity flat thread pitch of holes device, including front end copper post, tail end copper post, the front end copper post with
Tail end copper post is connected, and front end copper post outer surface is provided with external screw-thread, front end copper post and tail end copper post axial direction junction end face portion
Divide and pushed against with external screw-thread, tail end copper post bottom surface end face setting end face circular hole.
The tail end copper post maximum gauge is more than front end copper post maximum gauge.
The front end copper post length is less than tested threaded hole useful thread.
Preferably, the tail end copper post is blunt type seamed edge.
Further, the front end copper post external screw-thread thread form angle is 60 degree.
The utility model compared with prior art the advantages of be：
(1) the utility model is in the prior art directly with center distance caliper measurement screw thread pitch of holes asking there are error
Topic, devises the mode for being bonded and tightening with internal whorl by external screw-thread, reduces in a manner that internal and external screw thread is combined with each other
Existing error during measurement can ensure the accuracy measured.
(2) by designing end face circular hole in tail end copper post end face, ensure that can close in measurement process the utility model
Reason measures screw thread pitch of holes using center distance caliper, and solving the slide calliper rule caused by tested device intracavity space is narrow can not
Normal the problem of measuring, by the connection of the tapered sleeve connector and end face circular hole of slide calliper rule, it is determined that the position of central axis, measurement
Precision higher, while also ensure the convenience for measuring screw thread pitch of holes.
Description of the drawings
Fig. 1 is schematic diagram of device provided by the utility model；
Specific embodiment
As shown in Figure 1, a kind of device for measuring inner cavity flat thread pitch of holes provided by the utility model includes front end copper
Column 1, tail end copper post 2, wherein, front end copper post 1 is connected with tail end copper post 2, and front end copper post sets external screw-thread on 1 outer surface, institute
The form of thread angle for stating external screw-thread is 60 degree, the junction end face part axial with tail end copper post 2 of front end copper post 1 and external screw-thread
It pushes against, the maximum gauge of tail end copper post 2 is more than front end copper post 1, and 2 length of tail end copper post is grown compared with leading portion copper post 1, and seamed edge use is blunt
Seamed edge, tail end face setting end face circular hole 21, cone of the end face circular hole 21 when measuring with measurement digital display center distance caliper
Set gauge head, which is connected, to be measured.
The workflow of the utility model is as follows：Before detection, according to the required precision of tested screw hole internal thread, by this practicality
Novel external screw-thread is tightened with internal thread hole on the same plane of structural member inner cavity, and wherein 1 length of front end copper post should be less than interior spiral shell
The present apparatus is screwed to the axial junction end face part of front end copper post 1 and tail end copper post 2 and tested threaded hole hole by pit length
Mouthful end face completely attaches to, and internal and external screw thread hole is bonded completely at this time, then with two tapered sleeve gauge heads of digital display center distance caliper and end face
Circular hole 21 is connected, and the numerical value measured is exactly to be tested inner cavity flat thread hole to the effective distance between another threaded hole, if should
Pitch-row virtual value is then qualified in the margin of tolerance, is otherwise unqualified.
The content not being described in detail in the utility model specification belongs to the known technology of those skilled in the art.
Claims (5)
1. a kind of device for measuring inner cavity flat thread pitch of holes, it is characterised in that：Including front end copper post (1), tail end copper post
(2), the front end copper post (1) is connected with tail end copper post (2), and front end copper post (1) outer surface is provided with external screw-thread, front end copper post
(1) it is pushed against with the axial junction end face part of tail end copper post (2) with external screw-thread, tail end copper post (2) bottom surface end face setting end face
Circular hole (21).
2. a kind of device for measuring inner cavity flat thread pitch of holes according to claim 1, it is characterised in that：The tail end
Copper post (2) maximum gauge is more than front end copper post (1) maximum gauge.
3. a kind of device for measuring inner cavity flat thread pitch of holes according to claim 1 or 2, it is characterised in that：It is described
Front end copper post (1) length is less than tested threaded hole useful thread.
4. a kind of device for measuring inner cavity flat thread pitch of holes according to claim 1 or 2, it is characterised in that：It is described
Tail end copper post (2) is blunt type seamed edge.
5. a kind of device for measuring inner cavity flat thread pitch of holes according to claim 1 or 2, it is characterised in that：It is described
Front end copper post (1) external screw-thread thread form angle is 60 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721551364.4U CN207487561U (en) | 2017-11-20 | 2017-11-20 | A kind of device for measuring inner cavity flat thread pitch of holes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721551364.4U CN207487561U (en) | 2017-11-20 | 2017-11-20 | A kind of device for measuring inner cavity flat thread pitch of holes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207487561U true CN207487561U (en) | 2018-06-12 |
Family
ID=62474270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721551364.4U Active CN207487561U (en) | 2017-11-20 | 2017-11-20 | A kind of device for measuring inner cavity flat thread pitch of holes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207487561U (en) |
-
2017
- 2017-11-20 CN CN201721551364.4U patent/CN207487561U/en active Active
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