CN2210379Y - Adjustable device for measuring dimension of inner screw thread - Google Patents
Adjustable device for measuring dimension of inner screw thread Download PDFInfo
- Publication number
- CN2210379Y CN2210379Y CN 94218383 CN94218383U CN2210379Y CN 2210379 Y CN2210379 Y CN 2210379Y CN 94218383 CN94218383 CN 94218383 CN 94218383 U CN94218383 U CN 94218383U CN 2210379 Y CN2210379 Y CN 2210379Y
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- CN
- China
- Prior art keywords
- gauge head
- footpath
- seat
- tooth
- moving
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- Expired - Fee Related
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- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
The utility model relates to an adjustable device for measuring the dimension of an inner screw thread, adopting a bar type inside micrometer structure. The utility model is formed that a fixing measuring seat and a movable measuring seat are respectively installed at the right and left ends of the bar type inside micrometer structure, and a measuring head is installed in the groove of the measuring seats (the specification and the shape of the measuring head is different and can be replaced). The utility model is put in a measured inner screw thread hole, the tooth form of the measuring head contacts the tooth form of the inner screw thread at maximum diameter, and the five elements dimensions of the inner screw thread can be measured.
Description
The utility model belongs to the length measurement technique field, is specifically related to the measurement mechanism of an adjustable internal thread size.
At known internal thread detection device, be mostly footpath milscale in plug thread gauge, Ah times's formula horizontal metroscope and the internal thread.Whether detect the internal thread size with plug thread gauge qualified, it also is a kind of detection of composition error, it also can not detect the physical size of internal thread workpiece and the garden degree on the middle footpath, check to the major thread workpiece, feeler gauge is also very big accordingly, in actual production process, just execute incompatible checking with workman's practical experience with by repetitious, especially to the measurement of super-huge workpiece, a workman is difficult to operation, so use the feeler gauge check, cumbersome big with working strength of workers, operation easier is big, the quality of fit of workpiece is poor.Also having other several shortcomings, is because plug thread gauge can not be measured footpath size and other error in the reality of internal thread workpiece, comprehensively analyses scientifically so be difficult to the problem that internal whorl work piece quality exists.As everyone knows, the kind specification of screw thread is a lot, and the respective threads feeler gauge is also a lot, some special thread feeler gauge utilization factor is really very low, and the material that is used for making feeler gauge all is a high alloy tool steel generally, and Precision Machining forms after bakingout process, the cycle of making is long, and cost is expensive.For footpath milscale in Ah times's formula horizontal metroscope and the internal thread, they can only measure the middle footpath size of internal thread, but internally externally threadedly screw requirement, middle footpath only is on the one hand, it exists the composition error of aspects such as thread form half-angle, pitch, big footpath, path simultaneously, instrument can not on-the-spot use, and to large-scale with special (as sawtooth pattern) even middle footpath size also be difficult to measure.
The purpose of this utility model, be for avoiding these shortcomings and difficulty, middle footpath under the big footpath of the internal thread workpiece of above various thread forms of a kind of 130mm of measuring and specification, middle footpath, path, the pitch error is provided, on the footpath size, draw the error amount of angle of thread on middle footpath by simple computation, the error amount of pitch on middle footpath is easy to carry again and adapts to and produce and measure the device that uses.
The technical solution of the utility model is to realize like this, by micrometer inside caliper, the location survey seat, adapter sleeve, moving survey seat and gauge head are formed, its design feature is that location survey seat (7) is fixed on the sleeve pipe (8) of micrometer inside caliper, the moving seat (7) of surveying is by locating sleeve (15) and connecting screw (14) and relative connection of adapter sleeve (13), between the ladder plane of the moving housing bottom surface of surveying seat (17) and adapter sleeve (13), the ball (16) that can make survey (17) relative adapter sleeve (13) garden revolution is housed, the endoporus of adapter sleeve (13) installs lining (12), be fixed in by jackscrew (11) on the face bar (10) of micrometer inside caliper, be equipped with in moving groove two cinclides of surveying seat (17) and location survey seat (7) and bump pearl (6), that will bump that ball (6) locatees has spring (5) and a screw plug (4).The groove bottom land of location survey seat (7) is that two inclined-planes intersect protuberance at a middle straight line, the moving bottom land of surveying seat (17) groove is the plane, being equipped with in the groove of location survey seat (6) and moving survey seat (16) can be with the gauge head (1) of screw thread kind specification replacing, gauge head is rectangular parallelepiped, be divided into tooth portion and shank, in tooth portion rectangular through hole and hole, garden are arranged, its kind specification is respectively big footpath gauge head, middle footpath gauge head, directly gauge head and footpath gauge head in the pitch error, wherein big footpath gauge head is multiple tooth type, flute profile is less than half of thread angle, its shank is identical with the big footpath of flute profile side, middle footpath gauge head is a monodentate brachymemma tooth form, and the footpath gauge head is multiple tooth brachymemma tooth form in the pitch error, and its shank equates with footpath value in the pitch error, the footpath gauge head is multiple tooth full tooth form on, and shank is with the footpath is measure-alike on.
The utility model has been compared following advantage with known measurement mechanism:
1, can accurately measure middle footpath under the big footpath of the internal thread of above various thread forms of 130mm and specification, middle footpath, path, the pitch error, footpath size on improve the precision that screws of screw thread, and the double thread of sampling is made comprehensive analysis of science.
2, volume is little, and the cycle easy to manufacture is short, cost is low, especially the major thread more than the 500mm is more showed its value.
3, can in the production scene, one man operation use, reduce working strength of workers, can enhance productivity and workpiece accuracy.
Description of drawings:
Fig. 1 is the synoptic diagram of this device when measuring in screw thread
Fig. 2 is the topology view of this device
Fig. 3 is the specification shape figure of gauge head
Among the figure:
1, screw thread wire ring 2, gauge head
3, micrometer inside caliper 4, screw plug
5, spring 6, bump pearl
7, location survey seat 8, sleeve pipe
9, movable vernier cover 10, face bar
11, jackscrew 12, lining
13, adapter sleeve 14, connecting screw
15, locating sleeve 16, ball
17, the moving seat of surveying
Embodiment of the present utility model is further described in conjunction with the accompanying drawings.
As scheming: at the two ends of micrometer inside caliper, fixing the location survey seat respectively, the moving seat of surveying, the screw mandrel of location survey seat right-hand member is spun on the sleeve pipe of micrometer inside caliper, the moving seat of surveying is connected by locating sleeve and connecting screw are relative with adapter sleeve, between the moving housing bottom surface of surveying seat and adapter sleeve ladder plane, the ball that can make a survey relative adapter sleeve garden revolution is housed, the endoporus of adapter sleeve installs lining, and be fixed in by jackscrew on the face bar of micrometer inside caliper, be equipped with in location survey seat and moving survey seat groove two cinclides and bump pearl, with spring and screw plug ball is located, at the bottom of the moving survey seat groove is the plane, at the bottom of the location survey seat groove two inclined-planes of median rise, make side amount device two gauge heads become point-to-area state, can allow gauge head contact fully with workpiece, according to the size of measuring, gauge head is made big footpath gauge head respectively, middle footpath gauge head, directly gauge head and footpath gauge head in the pitch error, its big footpath gauge head is multiple tooth type, flute profile is less than half of thread angle, its shank is identical with the big footpath of flute profile side, middle footpath gauge head is a monodentate brachymemma tooth form, the footpath gauge head is multiple tooth brachymemma tooth form in the pitch error, its shank equates with footpath value in the pitch error, the footpath gauge head is multiple tooth full tooth form on, shank is with the footpath is measure-alike on, pack in location survey seat and the moving groove of surveying seat according to footpath or the desired corresponding gauge head of other size in the survey internal thread workpiece, by groove two cinclides bump pearl location or relative moving, the moving seat of surveying can arbitrarily rotate or move under the rotation of bumping pearl with lead angle.Gauge head for the monodentate type is a positioning action, and to can moving in groove of multiple tooth type, can extend canonical measure bar and the movable vernier cover of rotation on the milscale of length measured solves.Actual measuring process is: this device is put into tested internal thread workpiece hole, the movable vernier cover of rotation micrometer inside caliper, make flute profile correct the contacting on maximum gauge mutually of gauge head flute profile and internal thread workpiece, then measure the gauge head shank with outside micrometer and proofread and correct wherein footpath size and other error size, the measurement constant (A) that measured value (m) equals gauge head adds two sizes of surveying between the seat bottom land (L).
Be m=A+L, the constant of gauge head equals footpath height in two gauge heads, and big footpath gauge head is a big footpath height, and other gauge head is analogized, error amount { the δ P(D of pitch on middle footpath
2) equal with footpath size { D in the footpath pitch error surveyed of gauge head in the pitch error
2(δ P) }, deduct the middle footpath size { d that the footpath gauge head is surveyed in using
2,
Be δ P(d
2)=d
2(δ p)-d
2
Error amount { δ α/the 2(d of half of thread angle on middle footpath
2), equal to use the measured size { d of footpath on of footpath gauge head on
2Z } deduct footpath size, i.e. δ α/2(d in the pitch error that the middle footpath gauge head under the pitch error surveyed
2)=d
2Z-d
2(δ p)
In the footpath gauge head be to be used for measuring footpath in the reality of internal thread, footpath gauge head in the pitch error, the gauge head shank is consistent with path position in the flute profile, the middle footpath of surveying with it is the middle footpath under the pitch error.
Footpath gauge head on, consistent size directly in gauge head shank and the flute profile, the middle footpath of surveying with shank is of a size of the middle footpath size under the composition error.
Big footpath gauge head, the tooth top of gauge head is following less than the basic-profile angle, and the shank size equates that with big footpath size measured result is the big footpath of an internal thread size.
The path gauge head contacts big footpath gauge head shank inwards with workpiece, survey and be of a size of the path size.
The kind specification of screw thread gauge head is a lot, divide V-thread (60 degree, 55 degree), acme thread, saw-tooth thread, the various pitch of pitch 1.5mm～48mm, the utility model is not subjected to the restriction of above-mentioned example, and the scope of measurement also can be bigger, can do precision measurement, also can select for use corresponding gauge head can replace the external pitch diameter of thread size of ring thread gage to measure location survey seat and moving the survey on the seat and axostylus axostyle that are installed in outside micrometer respectively.
Claims (5)
1, a kind of measurement mechanism of adjustable internal thread size, by micrometer inside caliper, the location survey seat, adapter sleeve, moving survey seat and gauge head are formed, it is characterized in that location survey seat (7) is fixed on the sleeve pipe (8) of micrometer inside caliper, the moving seat (17) of surveying is by locating sleeve (15) and connecting screw (14) and relative connection of adapter sleeve (13), between the ladder plane of the moving housing bottom surface of surveying seat (17) and adapter sleeve (13), the spin (16) that can make survey (17) relative adapter sleeve (14) garden revolution is housed, the endoporus of adapter sleeve (13) installs lining (12), be fixed in by jackscrew (11) on the face bar (10) of micrometer inside caliper, be equipped with in moving groove two cinclides of surveying seat (17) and location survey seat (7) and bump pearl (6), that will bump that pearl (6) locatees has spring (5) and a screw plug (4).
2, the measurement mechanism of adjustable internal thread size according to claim 1, the groove bottom land that it is characterized in that location survey seat (7) are that two inclined-planes intersect protuberance at a middle straight line, and the moving bottom land of surveying seat (17) groove is the plane.
3, the measurement mechanism of adjustable internal thread size according to claim 1 is characterized in that location survey seat (7) and moves in the groove of surveying seat (17) gauge head (2) is housed.
4, the measurement mechanism of adjustable internal thread size according to claim 1 is characterized in that gauge head (2) is rectangular parallelepiped, is divided into tooth portion and shank, in tooth portion rectangular through hole is arranged.
5, according to the measurement mechanism of claim 1 or 4 described adjustable internal thread sizes, it is characterized in that gauge head (2) has directly gauge head and footpath gauge head in big footpath gauge head, middle footpath gauge head, the pitch error, its big footpath gauge head is multiple tooth shape, profile of tooth is less than half of thread angle, and its shank is identical with the big footpath of flute profile side; Middle footpath gauge head is a monodentate brachymemma tooth form; The footpath gauge head is multiple tooth brachymemma tooth form in the pitch error, and its shank equates with footpath value in the pitch error; The footpath gauge head is multiple tooth full tooth form on, and shank is with the footpath is measure-alike on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94218383 CN2210379Y (en) | 1994-08-15 | 1994-08-15 | Adjustable device for measuring dimension of inner screw thread |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94218383 CN2210379Y (en) | 1994-08-15 | 1994-08-15 | Adjustable device for measuring dimension of inner screw thread |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2210379Y true CN2210379Y (en) | 1995-10-18 |
Family
ID=33833563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94218383 Expired - Fee Related CN2210379Y (en) | 1994-08-15 | 1994-08-15 | Adjustable device for measuring dimension of inner screw thread |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2210379Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102230774A (en) * | 2011-06-25 | 2011-11-02 | 无锡西姆莱斯石油专用管制造有限公司 | Adjustable calibrating device for measuring intermediate diameter of internal thread of oil casing |
| CN104897030A (en) * | 2015-06-05 | 2015-09-09 | 南车戚墅堰机车车辆工艺研究所有限公司 | Inner gear over-ball distance measuring device and inner gear over-ball distance measuring method |
| CN111637810A (en) * | 2020-04-30 | 2020-09-08 | 四川航天川南火工技术有限公司 | Quick change device for thread connection and disconnection detection equipment |
-
1994
- 1994-08-15 CN CN 94218383 patent/CN2210379Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102230774A (en) * | 2011-06-25 | 2011-11-02 | 无锡西姆莱斯石油专用管制造有限公司 | Adjustable calibrating device for measuring intermediate diameter of internal thread of oil casing |
| CN104897030A (en) * | 2015-06-05 | 2015-09-09 | 南车戚墅堰机车车辆工艺研究所有限公司 | Inner gear over-ball distance measuring device and inner gear over-ball distance measuring method |
| CN104897030B (en) * | 2015-06-05 | 2018-08-31 | 中车戚墅堰机车车辆工艺研究所有限公司 | Internal tooth sphere distance measuring device and measuring method |
| CN111637810A (en) * | 2020-04-30 | 2020-09-08 | 四川航天川南火工技术有限公司 | Quick change device for thread connection and disconnection detection equipment |
| CN111637810B (en) * | 2020-04-30 | 2021-11-16 | 四川航天川南火工技术有限公司 | Quick change device for thread connection and disconnection detection equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |