CN202885726U - Large-sized inner thread pitch diameter comparative measurement instrument - Google Patents
Large-sized inner thread pitch diameter comparative measurement instrument Download PDFInfo
- Publication number
- CN202885726U CN202885726U CN 201220572137 CN201220572137U CN202885726U CN 202885726 U CN202885726 U CN 202885726U CN 201220572137 CN201220572137 CN 201220572137 CN 201220572137 U CN201220572137 U CN 201220572137U CN 202885726 U CN202885726 U CN 202885726U
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- measuring
- movable
- ball
- pitch diameter
- thread pitch
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The utility model relates to a large-sized inner thread pitch diameter comparative measurement instrument comprising a fixed measuring ball, a fixing measuring rod, a measuring frame, a digital display dial indicator, a spring, a movable spring, a movable measuring rod and a movable measuring ball, wherein one digital display dial indicator is fixed inside a middle hole of the measuring frame; one end of the measuring frame is provided with the fixed measuring rod; the outer end of the movable measuring rod is provided with the fixed measuring ball and the other end of the measuring frame is provided with the movable sleeve; one end of the movable sleeve is contacted with a measuring head of the digital display dial indicator and the other end of the movable sleeve and the movable measuring rod are fixed; the outer end of the movable measuring rod is provided with the movable measuring ball; and the movable sleeve is internally provided with the spring. According to the large-sized inner thread pitch diameter comparative measurement instrument, a traditional measurement idea is changed, a digital display length measuring machine is used as a standard and a comparative measurement method is used for measuring a thread pitch diameter actual value; and a measurement range can be adjusted randomly and the large-sized inner thread pitch diameter comparative measurement instrument has higher positioning precision and lower repeated measurement errors, and has the advantages that the comparative measurement of a large-sized inner thread pitch diameter is realized, operation is simple, convenient and rapid, and precision measurement is high.
Description
Technical field
The utility model relates to a kind of large scale thread pitch diameter comparing measuring apparatus, specifically mainly is for convenient, fast, high-acruracy survey to the large scale thread pitch diameter.
Background technology
In prior art, have following instrument can measure thread pitch diameter:
1, pitch diameter comparator: existing comparator can only detect the central diameter than minor thread, and the central diameter that can't solve size screw thread is measured;
2, horizontal metroscope: measure thread pitch diameter at horizontal metroscope, the general measure scope only has 0-300mm, because the problem of measured piece weight and measuring method, operates extremely inconveniently, and efficient is low, damages easily gauge head;
3, three coordinate measuring machine: measure with scanning feeler and special measurement program, expensive, inefficiency is not suitable for manufacturer and uses; Measure with common contact measuring head, the gauge head of the different-diameter that is not complementary with screw thread, and to seek alveolus position, inefficiency with the method for approaching one by one.
Summary of the invention
The utility model purpose is to overcome above-mentioned weak point, thereby provide a kind of large scale thread pitch diameter comparing measuring apparatus that can generally be applicable to manufacturing enterprise, reach convenient, fast, high-acruracy survey to the large scale thread pitch diameter, this measuring instrument manufacturing cost is lower, simple to operate, measuring accuracy is high.
According to the technical scheme that the utility model provides, large scale thread pitch diameter comparing measuring apparatus comprises fixing ball, fixation measuring bar, measurement bay, digital display dial gauge, spring, movable sleeve, movement measuring staff and the movable ball of surveying surveyed; Fix a digital display dial gauge in the described measurement bay interstitial hole, described measurement bay one end is equipped with the fixation measuring bar, described fixation measuring bar outer end is equipped with the fixing described measurement bay other end of ball of surveying movable sleeve is housed, movable sleeve one end contacts with the gauge head of digital display dial gauge, the other end and movement measuring staff are fixed, and the movable ball of surveying is equipped with in described movement measuring staff outer end; Inner is equipped with spring at movable sleeve.
As further improvement of the utility model, the impulse stroke of described digital display dial gauge is 25.4mm, and minimum division value is 0.001mm.
As further improvement of the utility model, described fixation measuring bar can stretch arbitrarily in the measurement bay hole, is fixed on the measurement bay with lock-screw.
As further improvement of the utility model, be fixed with pull bar on the described measurement bay and survey ball, pull bar survey ball can make to be actively set in the hole and move axially.
As further improvement of the utility model, described movable sleeve is fixed with lock-screw and movement measuring staff.
The utility model compared with prior art has the following advantages:
The utility model is simple in structure, compact, reasonable; Change traditional measurement theory, made standard according to the digital display gauging machine, measured pitch diameter of thread actual value with the method that compares and measures; Can arbitrarily adjust measurement range, and higher bearing accuracy and lower duplicate measurements error are arranged, can make the comparing and measuring of size screw thread central diameter, simple, convenient, quick, high-acruracy survey; Also can measure smooth inner bore and trench diameter.
Description of drawings
Fig. 1 is this bright large scale thread pitch diameter comparing measuring apparatus structural front view.
Embodiment
Following the utility model is further described in connection with the embodiment in the accompanying drawing:
As shown in Figure 1, comprise fixing ball 1, fixation measuring bar 2, lock-screw 3, measurement bay 4, digital display dial gauge 5, spring 6, pull bar survey ball 7, movable sleeve 8, lock-screw 9, movement measuring staff 10 and the movable ball 11 of surveying surveyed.
Measurement range: 200mm～1000mm; Measuring accuracy: 0.003mm.
The utility model can be installed fixing, the movable ball of surveying of different size on fixing, movement measuring staff, to satisfy the best requirement of surveying ball of internal thread.Measurement standard can comparatively make things convenient for by horizontal metroscope, gauge block or smooth ring gauge etc. and provides, and ergometry is provided by spring, and measured value obtains at the higher digital display dial gauge of precision.
Principle of work of the present utility model and the course of work:
Principle of work:
The utility model adopts and compares and measures principle, central diameter comparator two ends is surveyed the outer end of ball with the digital display gauging machine apart from the M value that is adjusted into tested screw thread name central diameter, records the measured value M of the tested pitch diameter of thread with the central diameter comparator
', tested pitch diameter of thread error then
Δd
2＝M
′－?M
The course of work:
Select the best fixing ball 1 of surveying to survey ball and the movable ball 11 of surveying according to the pitch of tested screw thread, and calculate the M value of the pitch diameter of thread, select suitable fixation measuring bar 2 and movement measuring staff 10 according to the tested pitch diameter of thread again, guarantee in movement measuring staff effective travel scope, the fixing ball 1 survey ball of surveying can touch the central diameter of screw thread with the movable ball 11 of surveying, and has certain dynamometry.Fixing survey ball 1 survey ball and the movable ball 11 survey balls of surveying are separately fixed on fixation measuring bar 2 and the movement measuring staff 10, fixation measuring bar 2 is fixed on the measurement bay with movement measuring staff 10, and make fixing survey ball 1 survey ball and the movable outer end size of surveying ball 11 greater than M value 5mm about.Distance between digital display gauging machine two planes survey cap is predisposed to the M value of tested screw thread name central diameter, the central diameter comparator clamping of adjusting on gauging machine, adjust the gauging machine worktable, the center line that makes central diameter comparator two ends survey ball overlaps with the gauging machine slotted line, and this moment is the digital display dial gauge numerical value " zero setting " of central diameter comparator.Hand-held central diameter comparator, the fixedly gauge head of central diameter comparator is embedded in the thread groove of tested screw thread, and inwardly pushing drawing rod handball activity compression sounding rod enters in the threaded hole central diameter comparator, at the fixing ball diameter direction finding same helix of surveying, the slow release movement measuring staff makes the activity survey ball on the movement measuring staff enter measured zone, until the pull bar handball loosens fully, keep fixing survey stone-dead, the movement measuring staff that swings reads the digital display dial gauge indicating value, gets maximal value A
MaxBe measurement result. tested pitch diameter of thread error
Δd
2＝A
Max
Points for attention of the present utility model:
1 because this central diameter comparator is to be assembled by metal parts, and temperature contrast can cause that Center Length changes, so should not grip the central diameter comparator with the pushing phase, should the wooden heat-insulating circle be installed at certain cylindrical place.
2 because the central diameter comparator has constant weight, in order to guarantee to survey ball both sides and thread groove in test
The side is closely connected, so in use make the central diameter comparator in vertical state as far as possible.
3 fixing, the movable deviation from circular froms of surveying ball can directly affect measurement result.Should note in the use fixing, movable wearing and tearing of surveying ball, or often change fixing, the movable ball of surveying.
Claims (5)
1. a large scale thread pitch diameter comparing measuring apparatus is characterized in that: comprise fixing ball (1), fixation measuring bar (2), measurement bay (4), digital display dial gauge (5), spring (6), movable sleeve (8), movement measuring staff (10) and the movable ball (11) of surveying surveyed; In described measurement bay (4) interstitial hole digital display dial gauge (5) is housed, described measurement bay (4) one ends are equipped with fixation measuring bar (2), the fixing ball (1) of surveying is equipped with in described fixation measuring bar (2) outer end, described measurement bay (4) other end is equipped with movable sleeve (8), movable sleeve (8) one ends contact with the gauge head of digital display dial gauge (5), the other end and movement measuring staff (10) are fixing, and the movable ball (11) of surveying is equipped with in described movement measuring staff (10) outer end; Inner is equipped with spring (6) at movable sleeve (8).
2. large scale thread pitch diameter comparing measuring apparatus as claimed in claim 1 is characterized in that: described
The impulse stroke of digital display dial gauge (5) is 25.4mm, and minimum division value is 0.001mm.
3. large scale thread pitch diameter comparing measuring apparatus as claimed in claim 1 is characterized in that: described
Fixation measuring bar (2) can stretch arbitrarily in the measurement bay hole, is fixed on the measurement bay (4) with lock-screw (3).
4. large scale thread pitch diameter comparing measuring apparatus as claimed in claim 1 is characterized in that: described
Be fixed with pull bar on the measurement bay (4) and survey ball (7), pull bar is surveyed ball (7) can make movable sleeve (8) move axially in the measurement bay hole.
5. large scale thread pitch diameter comparing measuring apparatus as claimed in claim 1 is characterized in that: described movable sleeve (8) is fixing with lock-screw (9) and movement measuring staff (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220572137 CN202885726U (en) | 2012-10-31 | 2012-10-31 | Large-sized inner thread pitch diameter comparative measurement instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220572137 CN202885726U (en) | 2012-10-31 | 2012-10-31 | Large-sized inner thread pitch diameter comparative measurement instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202885726U true CN202885726U (en) | 2013-04-17 |
Family
ID=48077147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220572137 Expired - Fee Related CN202885726U (en) | 2012-10-31 | 2012-10-31 | Large-sized inner thread pitch diameter comparative measurement instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202885726U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102937403A (en) * | 2012-10-31 | 2013-02-20 | 无锡市计量测试中心 | Comparator for large-size internal thread pitch diameters |
| CN110657751A (en) * | 2019-10-17 | 2020-01-07 | 成都飞机工业（集团）有限责任公司 | Self-positioning high-precision aperture measuring device |
-
2012
- 2012-10-31 CN CN 201220572137 patent/CN202885726U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102937403A (en) * | 2012-10-31 | 2013-02-20 | 无锡市计量测试中心 | Comparator for large-size internal thread pitch diameters |
| CN102937403B (en) * | 2012-10-31 | 2015-07-29 | 无锡市计量测试中心 | Large scale thread pitch diameter comparing measuring apparatus |
| CN110657751A (en) * | 2019-10-17 | 2020-01-07 | 成都飞机工业（集团）有限责任公司 | Self-positioning high-precision aperture measuring device |
| CN110657751B (en) * | 2019-10-17 | 2021-08-03 | 成都飞机工业（集团）有限责任公司 | Self-positioning high-precision aperture measuring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wang Daoyuan Inventor after: Wang Guomin Inventor before: Wang Guomin |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: WANG GUOMIN TO: WANG DAOYUAN WANG GUOMIN |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130417 Termination date: 20201031 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |