CN203824461U - Tool for detecting precision and effective length of internal thread of blind screw hole - Google Patents
Tool for detecting precision and effective length of internal thread of blind screw hole Download PDFInfo
- Publication number
- CN203824461U CN203824461U CN201420213770.XU CN201420213770U CN203824461U CN 203824461 U CN203824461 U CN 203824461U CN 201420213770 U CN201420213770 U CN 201420213770U CN 203824461 U CN203824461 U CN 203824461U
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- internal thread
- sleeve
- hole
- effective length
- thread
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- Expired - Lifetime
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- 238000001514 detection method Methods 0.000 claims abstract description 8
- 238000012360 testing method Methods 0.000 claims description 16
- 230000000694 effects Effects 0.000 claims description 9
- 238000009413 insulation Methods 0.000 claims description 5
- 238000009826 distribution Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 description 9
- 238000007689 inspection Methods 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000002950 deficient Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000003068 static effect Effects 0.000 description 2
- 238000010923 batch production Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
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- Length-Measuring Instruments Using Mechanical Means (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The utility model discloses a tool for detecting the precision and the effective length of an internal thread of a blind screw hole, which comprises a hand holder, a sleeve, a measuring rod, a microdrum, a thread go gauge and a thread no-go gauge, wherein the hand holder is provided with a guide through hole, the inner wall of the guide through hole is provided with an internal thread, and the front of the hand holder is provided with a reference plane; one of the sleeve is connected with the hand holder, an inner hole of the sleeve is concentric with the guide through hole, and the outer cylindrical surface of the sleeve is provided with a first graduation line distributed along the axial direction; the middle part of the measuring rod is screwed in the guide through hole, and the rear part is sleeved in the sleeve; the microdrum sleeves the outer cylindrical surface of the sleeve and is fixed with the measuring rod, and the outer cylindrical surface of the microdrum is provided with a second graduation line distributed along the circumferential direction; the thread go gauge is detachably fixed with the front end of the measuring rod and used for detecting the virtual pitch diameter and the major diameter of the internal thread of the blind screw hole; the thread no-go gauge is detachably fixed with the rear end of the measuring rod and used for detecting the single pitch diameter of the internal thread of the blind screw hole; and the reference plane and an central axis of the measuring rod are vertical with each other in space. The tool disclosed by the utility model is simple in structure, convenient to use at the field, and reliable in detection data.
Description
Technical field
The utility model technology relates to a kind of precision and effective length pick-up unit of blind screwhole internal thread, is specifically related to a kind of testing tool of precision and effective length of blind screwhole internal thread.
Background technology
Spiral marking connection is one of mechanical connecting mode the most frequently used in machine-building, extensively adopts because its connection is reliable, simple in structure, easily manufactured.STRTHD Guo JiabiaozhunGB T197-2003 has determined G, two kinds of basic deviations of H and 3～9 grades of grades of tolerance to internal thread gauge, according to requirements selects for deviser.In practical application, some crucial and important parts are connect, its blind screwhole not only internal accuracy of thread has strict demand (as 6G, 7H etc.), and the effective length of internal thread is also had to tolerance.For example, on wind driven generator principal shaft, M24, M20 wherein, M16 blind screwhole, it is 40 that reach requires respectively
+ 5 0, 35
+ 3 0, 25
+ 5 0.To the inspection during manufacture of these blind screwholes, not only need to check accuracy of thread whether qualified, whether qualifiedly also need to detect this internal thread effective length.STRTHD feeler gauge internally screw-tjread system manufacturing accuracy carries out comprehensive test, judge that whether screw thread is qualified, but double thread effective length cannot detect.Although some production scene adopts some indirect methods to measure blind screwhole internal thread effective length, all can not obtain quickly accurate result.For example, while adopting normal length chi to measure, the data of acquisition can only reflect the length of internal thread bottom outlet, cannot reflect the effective length of internal thread; While adopting thread tap to screw in the interior subsidiary of blind screwhole, because screw tap head is with one section of guide cone, the length recording is generally dark than physical length, also cannot obtain accurate data.As can be seen here, measure accurately, fast, easily the effective length of blind screwhole internal thread, not general measuring method can solve.
Summary of the invention
The technical problems to be solved in the utility model is: the testing tool that a kind of precision and effective length of blind screwhole internal thread are provided.
For solving the problems of the technologies described above, the utility model adopts following technical scheme:
The precision of blind screwhole internal thread and a testing tool for effective length, is characterized in that, comprises
Hand-held of –, has guide through hole on it, on the inwall of this guide through hole, have internal thread, and this front of hand-held has reference field;
– one end and described hand-held the sleeve being connected, its endoporus is concentric with described guide through hole, has the first scale mark along its axial distribution on its outer cylinder;
– middle part movable screw is connected in described guide through hole and rear sleeve is contained in the sounding rod in described sleeve;
– be sleeved on described sleeve outer cylinder and with the fixing microdrum of described sounding rod, on its outer cylinder, there is the second scale mark circumferentially distributing along it, this second scale mark is corresponding with described the first scale mark;
The front end of – and described sounding rod detachably fixing, for detection of the effect central diameter of internal thread and the screw thread drift in large footpath of described blind screwhole; And
The rear end of – and described sounding rod detachably fixing, for detection of the screw thread no-go gage of the single central diameter of the internal thread of described blind screwhole;
Wherein, described reference field is spatially mutually vertical with the axis of described sounding rod.
Described hand-held the locking member being provided with for locking described test rod.
The portion of the handle of described hand-held is provided with thermal insulation board.
The cylinder of described sleeve is provided with adjustment tank.
Useful technique effect of the present utility model is:
The utility model is taking STRTHD feeler gauge as basic structure, by thering is forwardly hand-held of the reference field upper activity sounding rod that is spirally connected, the sleeve set with the first scale mark at the rear portion of this sounding rod and its front end and hand-held fixing, the microdrum with the second scale mark is sleeved on sleeve outer cylinder and with sounding rod to be fixed, at the front end retaining thread drift of sounding rod retaining thread no-go gage in its back-end, when measurement, by the accuracy test mode of existing plug thread gauge to blind screwhole internal thread, with drift of the present utility model and no-go gage qualified to the accuracy test of tested blind screwhole internal thread after, then the reference field of hand-held is resisted against tested blind screwhole peristoma place surface of the work and maintain static, turn microdrum can make screw thread drift screw in tested blind screwhole, after putting in place, press the number reading method of micrometer caliper, reading out data from the first scale mark and the second scale mark, can obtain the effective length of tested blind screwhole internal thread.Therefore the utility model can be checked precision and the effective length thereof of blind screwhole internal thread.The utility model is simple in structure, scene is easy to use, it is reliable to detect data, is not only applicable to the process quality final inspection of blind screwhole, is also applicable to precision and size Control in process, is specially adapted to the manufacturing inspection of batch production.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is cut-away section structural drawing of the present utility model;
Structural representation when Fig. 3 is the utility model zeroing;
Fig. 4 is the utility model reading partial enlarged drawing.
Embodiment
For describing technical characterictic of the present utility model and effect in detail, and can realize according to the content of this instructions, below in conjunction with accompanying drawing, embodiment of the present utility model be further illustrated.
Referring to Fig. 1 and Fig. 2, be the testing tool of precision and the effective length of a kind of blind screwhole internal thread of the present utility model, comprise screw thread drift 1, sounding rod 2, hand-held 3, sleeve 6, microdrum 7 and screw thread no-go gage 8; On hand-held 3, there is guide through hole, on the inwall of this guide through hole, there is internal thread, this internal thread is the accurate screw thread that detects, its helical pitch is 0.5 millimeter, this front of hand-held 3 has reference field 3-1, be provided with the locking member 4 for locking test rod 2 for hand-held 3, this locking member 4 is lock-screw; Mounting hole on one end of sleeve 6 and hand-held 3 is fixed by interference fit, and the endoporus of this sleeve 6 is concentric with the guide through hole of hand-held 3, on the outer cylinder of this sleeve 6, there is the first scale mark 6-1 along its axial distribution, the cylinder of sleeve 6 is provided with adjustment tank 5, by the little cutter insertion adjustment tank 5 that changes, the i.e. circumferential and axial position of rotatable or moving sleeve 6, convenient operation person observes and records reading; The middle part of sounding rod 2 has the external thread suitable with holding internal thread on the guide through hole inwall of frame 3, sounding rod 2 is connected with the internal thread on the guide through hole inwall of hand-held 3 by this external thread, thereby movable screw is connected in the guide through hole of hand-held 3, and the axis of this sounding rod 2 is spatially mutually vertical with the reference field on hand-held 3, and the rear sleeve of sounding rod 2 is contained in sleeve 6; Microdrum 7 is sleeved on sleeve 6 outer cylinders and is fixing with sounding rod 2, in the present embodiment, microdrum 7 is made into integration with sounding rod 2, rotation microdrum 7 can overcome friction force between the internal thread of tested blind screwhole and plug thread gauge 1, on the outer cylinder of microdrum 7, have the second scale mark 7-1 circumferentially distributing along it, this second scale mark 7-1 is corresponding with the first scale mark 6-1; The afterbody of screw thread drift 1 has been fixed the drift cylindrical cone 10 of connection effect, the front end of sounding rod 2 has the drift inner circle taper hole suitable with drift cylindrical cone 10, on the hole wall of this drift inner circle taper hole, have bleeder vent 2-1, the vertex of a cone of drift cylindrical cone 10 stretches in this drift inner circle taper hole and is tightly fixed, thereby screw thread drift 1 is removably fixed on to the front end of sounding rod 2, this screw thread drift 1 is for detection of internal thread effect central diameter and the large footpath of blind screwhole; The front end of screw thread no-go gage 8 has been fixed the no-go gage cylindrical cone 11 of connection effect, the rear end face of sounding rod 2 has the no-go gage inner circle taper hole suitable with no-go gage cylindrical cone 11, no-go gage cylindrical cone 11 vertex of a cones stretch in this no-go gage inner circle taper hole and are tightly fixed, thereby screw thread no-go gage 8 is removably fixed on to the rear end of sounding rod 2, this screw thread no-go gage 8 is for detection of the single central diameter of the internal thread of blind screwhole; Wherein, the ruling span of the first scale mark 6-1 is 0.5 millimeter, and numerical value increases to hand-held 3 directions from microdrum 7, and the second scale mark 7-1 has 50 grooves of circumference uniform distribution, and numerical value increases down from upper.When measurement, carry out reading of measurement data according to the counting principle of micrometer caliper.
The portion of the handle of hand-held 3 is provided with thermal insulation board 9, the impact that this thermal insulation board 9 avoids staff to generate heat on measurement result when measuring.
Using method of the present utility model:
Before detection, according to the accuracy requirement of detected blind screwhole internal thread, choose screw thread drift 1 and screw thread no-go gage 8, corresponding front-end and back-end of inserting sounding rod 2, and guarantee respectively connect reliable, and relative position is fixed.
Zeroing before measurement: rotation microdrum 7, utilize table plane or other planes, make the front end face 1-1 of screw thread drift 1 and the reference field 3-1 in hand-held 3 fronts alignment, then changing cutter with a word in same plane inserts in adjustment tank 5, circumferentially rotate and move axially sleeve 6, the peristoma of microdrum 7 front end ports is aimed at zero groove of the first scale mark 6-1 on sleeve 6, datum line (i.e. the upper axially extended horizontal line of the second scale mark 7-1) in the zero groove alignment sleeve 6 of the second scale mark 7-1 on microdrum 7, state after the utility model zeroing as shown in Figure 3.
While adopting the utility model to check existing accuracy of thread requirement to have again the blind screwhole of reach requirement, first operator screws in tested blind screwhole by screw thread no-go gage 8, in the time that screw-in amount is no more than two pitch, show that the actual pitch diameter of tested blind screwhole internal thread is not more than the dimension limit of minimum material tooth form, be that not-go-end is up to the standards, otherwise not-go-end disqualified upon inspection.Follow hand-held thermal insulation board 9, rotation microdrum 7, screw thread drift 1 is screwed in to tested blind screwhole, in the time passing through with tested blind screwhole screw-in, dimension limit and the core diameter of thread that the effect central diameter that shows tested screw thread is not less than maximum solid tooth form are not less than dimension limit, be that go side is up to the standards, otherwise go side disqualified upon inspection.If it is all qualified that screw thread no-go gage 8 and screw thread drift 1 are checked, can judge that the precision of this internal thread is as qualified, otherwise be defective.Meanwhile, because the effective length of tested blind screwhole internal thread is taking the front end face 1-1 of screw thread drift 1 as measuring starting point, when zeroing, make the front end face 1-1 of screw thread drift 1 of the effective length of measuring internal thread and the reference field 3-1 of zeroing align in same plane.In testing process, the reference field 3-1 of this measurer zeroing is close to tested blind screwhole mouth end surface of the work all the time, maintain static, be that sleeve 6 does not move, screw thread drift 1 screws in the length of detected blind screwhole, it is exactly the effective length of tested blind screwhole internal thread, press the number reading method of micrometer caliper, read from the first scale mark 6-1 and the second scale mark 7-1 the effective length that is detected blind screwhole internal thread, for example, as shown in Figure 4, read 25.0 millimeters of 0.5 integral multiples from the first scale mark 6-1 of sleeve 6, its reading is to read from right to left; The second scale mark 7-1 from microdrum 7 reads the decimal 29.5*0.01 millimeter that is less than 0.5 millimeter, and its reading is to read down from upper; Two parts addition=25+0.295=25.295 millimeter, is exactly the effective length value of tested blind screwhole internal thread, if this effective length value is qualified in margin tolerance, otherwise is defective.Obviously, only have and be up to the standards when precision and the effective length of internal thread simultaneously, can judge that threaded hole is as qualified, otherwise be judged to be defective.
Above with reference to embodiment, the utility model being have been described in detail, is illustrative and not restrictive, in the variation and the amendment that do not depart under the utility model general plotting, all within protection domain of the present utility model.
Claims (4)
1. the precision of blind screwhole internal thread and a testing tool for effective length, is characterized in that, comprises
Hand-held of –, has guide through hole on it, on the inwall of this guide through hole, have internal thread, and this front of hand-held has reference field;
– one end and described hand-held the sleeve being connected, its endoporus is concentric with described guide through hole, has the first scale mark along its axial distribution on its outer cylinder;
– middle part movable screw is connected in described guide through hole and rear sleeve is contained in the sounding rod in described sleeve;
– be sleeved on described sleeve outer cylinder and with the fixing microdrum of described sounding rod, on its outer cylinder, there is the second scale mark circumferentially distributing along it, this second scale mark is corresponding with described the first scale mark;
The front end of – and described sounding rod detachably fixing, for detection of the effect central diameter of internal thread and the screw thread drift in large footpath of described blind screwhole; And
The rear end of – and described sounding rod detachably fixing, for detection of the screw thread no-go gage of the single central diameter of the internal thread of described blind screwhole;
Wherein, described reference field is spatially mutually vertical with the axis of described sounding rod.
2. the precision of blind screwhole internal thread according to claim 1 and the testing tool of effective length, is characterized in that, described hand-held the locking member being provided with for locking described test rod.
3. the precision of blind screwhole internal thread according to claim 1 and 2 and the testing tool of effective length, is characterized in that, the portion of the handle of described hand-held is provided with thermal insulation board.
4. the precision of blind screwhole internal thread according to claim 1 and 2 and the testing tool of effective length, is characterized in that, the cylinder of described sleeve is provided with adjustment tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420213770.XU CN203824461U (en) | 2014-04-29 | 2014-04-29 | Tool for detecting precision and effective length of internal thread of blind screw hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420213770.XU CN203824461U (en) | 2014-04-29 | 2014-04-29 | Tool for detecting precision and effective length of internal thread of blind screw hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203824461U true CN203824461U (en) | 2014-09-10 |
Family
ID=51479946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420213770.XU Expired - Lifetime CN203824461U (en) | 2014-04-29 | 2014-04-29 | Tool for detecting precision and effective length of internal thread of blind screw hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203824461U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105115398A (en) * | 2015-09-14 | 2015-12-02 | 苏州东方模具科技股份有限公司 | Measurement tool for measuring distances between origin reference location holes of glass mold and land areas |
| CN105783628A (en) * | 2016-05-17 | 2016-07-20 | 中车唐山机车车辆有限公司 | Screwed hole detection gauge and detection device |
| CN113874162A (en) * | 2019-06-24 | 2021-12-31 | 西铁城时计株式会社 | Cooling liquid supply device and machine tool |
-
2014
- 2014-04-29 CN CN201420213770.XU patent/CN203824461U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105115398A (en) * | 2015-09-14 | 2015-12-02 | 苏州东方模具科技股份有限公司 | Measurement tool for measuring distances between origin reference location holes of glass mold and land areas |
| CN105783628A (en) * | 2016-05-17 | 2016-07-20 | 中车唐山机车车辆有限公司 | Screwed hole detection gauge and detection device |
| CN105783628B (en) * | 2016-05-17 | 2019-01-22 | 中车唐山机车车辆有限公司 | Threaded hole detects gauge and detection device |
| CN113874162A (en) * | 2019-06-24 | 2021-12-31 | 西铁城时计株式会社 | Cooling liquid supply device and machine tool |
| CN113874162B (en) * | 2019-06-24 | 2024-03-05 | 西铁城时计株式会社 | Cooling liquid supply device and machine tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140910 |