CN110579148A - External thread pitch diameter runout measuring joint and measuring device - Google Patents
External thread pitch diameter runout measuring joint and measuring device Download PDFInfo
- Publication number
- CN110579148A CN110579148A CN201910866110.9A CN201910866110A CN110579148A CN 110579148 A CN110579148 A CN 110579148A CN 201910866110 A CN201910866110 A CN 201910866110A CN 110579148 A CN110579148 A CN 110579148A
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- China
- Prior art keywords
- standard
- external thread
- detected
- support shaft
- fixing frame
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
Abstract
The invention relates to an external thread pitch diameter runout measuring joint and a measuring device, wherein the external thread pitch diameter runout measuring joint comprises: the fixing frame is fixedly assembled on the measuring rod of the dial indicator; the supporting shaft is fixedly assembled on the fixing frame; the standard stud is provided with a standard external thread and is in spiral fit with the external thread to be detected; the standard stud is sleeved on the support shaft in an inosculating mode, the standard stud and the support shaft are assembled in a rotating mode in the circumferential direction of the support shaft and assembled in a sliding mode in the axial direction of the support shaft, and the standard stud is driven to rotate and slide by the rotating rod piece to be detected when the standard external thread is matched with the external thread to be detected in a spiral mode. During detection, the standard external thread of the standard stud on the fixing frame is matched with the external thread to be detected on the rod piece to be detected in a spiral mode, and then the dial indicator fixedly assembled with the fixing frame is reset to zero; then, the rod piece to be detected is driven to rotate for a circle, the offset can be directly observed through the dial indicator, the offset is the jumping degree of the pitch diameter of the thread, and the detection is rapid and accurate.
Description
Technical Field
The invention relates to an external thread pitch diameter runout measuring joint and a measuring device.
Background
The threaded connection is a conventional connection mode in the field of machinery, and common threaded connectors are studs, bolts, screws and the like. The thread connecting piece is provided with threads, and the threads on the thread connecting piece can deviate due to the influence of factors such as vibration of a machine tool, internal flaws of blanks, burrs and the like in the machining and manufacturing process.
At present, most of detection on the threads adopts ring gauges and other standard tools which can be matched with the threads to detect, and the detection tool mainly detects whether the threads can be screwed or not and can not detect the jump of the pitch diameter of the threads directly, quickly and accurately.
Disclosure of Invention
the invention aims to provide an external thread pitch diameter runout measuring joint capable of detecting external thread pitch diameter runout; the invention also aims to provide an external thread pitch diameter runout measuring device capable of detecting the external thread pitch diameter runout.
In order to achieve the purpose, the technical scheme of the external thread pitch diameter runout measuring joint is as follows:
External screw thread pitch diameter measurement connects includes: the fixing frame is fixedly assembled on the measuring rod of the dial indicator; the supporting shaft is fixedly assembled on the fixing frame; the standard stud is provided with a standard external thread, and the standard external thread is provided with a standard thread pitch and a standard thread form angle which are used for corresponding to the external thread to be detected on the rod piece to be detected so as to be in spiral fit with the external thread to be detected; the standard stud is sleeved on the support shaft in an inosculating mode, the standard stud and the support shaft are assembled in a rotating mode in the circumferential direction of the support shaft and assembled in a sliding mode in the axial direction of the support shaft, and when the standard external thread is matched with the external thread to be detected in a spiral mode, the standard stud is driven by the rotating rod piece to be detected to rotate in the circumferential direction of the support shaft and slide in the axial direction of the support shaft.
the beneficial effects are that: during detection, the measuring joint is fixedly assembled on a measuring rod of the dial indicator, then the standard external thread of the standard stud on the fixing frame is in spiral fit with the external thread to be detected on the rod piece to be detected until the standard external thread is completely contacted with the external thread to be detected, and then the dial indicator fixedly assembled with the fixing frame is reset to zero; then, the rod piece to be detected is driven to rotate for a circle, the standard stud can drive the measuring rod to float under the action of the external thread to be detected, so that the pointer of the dial indicator rotates, the offset is directly observed through the dial indicator, the offset is the runout degree of the thread pitch diameter, and the detection is rapid and accurate. Moreover, the external thread of the standard stud has a plurality of thread pitches, so that the standard stud can measure a plurality of groups of thread pitch diameters at one time to obtain average runout, and the accuracy is higher; in addition, the standard stud is rotatably assembled on the supporting shaft, so that friction between the standard external thread and the external thread to be detected is reduced, and the detection precision and the service life of the measuring joint are further improved.
Furthermore, the support shaft is a fastening pin fixedly assembled on the fixed frame, the standard stud is sleeved on the fastening pin in an inosculating manner, and the axial length of the fastening pin is at least twice of the standard thread pitch larger than that of the standard stud, so that the standard stud can slide along the axial direction of the fastening pin.
The beneficial effects are that: the supporting shaft is designed to be the fastening pin, the fastening pin is in interference fit with the pin hole in the fixing frame, the fastening pin is convenient to fixedly assemble on the fixing frame, meanwhile, the fastening pin is of a long shaft structure, the contact area of the standard stud and the fastening pin is increased, and the stability of the standard stud in the rotating and sliding processes is guaranteed.
Further, the mount is door font structure, including horizontal pole and two montants, the fastening pin fixed assembly is in the middle of two montants.
The beneficial effects are that: the door-shaped structure is simpler, and the fixing assembly of the fastening pin is convenient.
Furthermore, the fixing frame is provided with a threaded connecting rod for connecting the fixing frame to the dial indicator in a threaded manner.
The beneficial effects are that: the mount passes through threaded connection pole threaded connection on the percentage table, and the dismouting of the mount of being convenient for is favorable to the change and the maintenance of mount and standard double-screw bolt.
Furthermore, the threaded connecting rod is spirally assembled with a locking nut to tightly push the dial indicator so as to lock the threaded connecting rod on the dial indicator.
The beneficial effects are that: the threaded connecting rod is locked on the dial indicator through the locking nut, and the stability that the external thread pitch diameter runout measuring connector is fixed on the dial indicator is guaranteed.
In order to achieve the purpose, the technical scheme of the external thread pitch diameter runout measuring device is as follows:
External screw thread pitch diameter measuring device that beats includes: the clamping seat is used for clamping the rod piece to be detected and driving the rod piece to be detected to rotate; the supporting frame is arranged on the clamping seat or arranged beside the clamping seat; the dial indicator is fixed on the support frame and is provided with a measuring rod; the measuring adapter comprises: the fixing frame is fixedly assembled on the dial indicator; the supporting shaft is fixedly assembled on the fixing frame; the standard stud is provided with a standard external thread, and the standard external thread is provided with a standard thread pitch and a standard thread form angle which are used for corresponding to the external thread to be detected on the rod piece to be detected so as to be in spiral fit with the external thread to be detected; the standard stud is sleeved on the support shaft in an inosculating mode, the standard stud and the support shaft are assembled in a rotating mode in the circumferential direction of the support shaft and assembled in a sliding mode in the axial direction of the support shaft, and when the standard external thread is matched with the external thread to be detected in a spiral mode, the standard stud is driven by the rotating rod piece to be detected to rotate in the circumferential direction of the support shaft and slide in the axial direction of the support shaft.
the beneficial effects are that: during detection, the standard external thread of the standard stud on the fixing frame is matched with the external thread to be detected on the rod piece to be detected in a spiral mode until the standard external thread is completely contacted with the external thread to be detected, and then the dial indicator fixedly assembled with the fixing frame is reset to zero; then, the rod piece to be detected is driven to rotate for a circle, the standard stud can drive the measuring rod to float under the action of the external thread to be detected, so that the pointer of the dial indicator rotates, the offset is directly observed through the dial indicator, the offset is the runout degree of the thread pitch diameter, and the detection is rapid and accurate. Moreover, the external thread of the standard stud has a plurality of thread pitches, so that the standard stud can measure a plurality of groups of thread pitch diameters at one time to obtain average runout, and the accuracy is higher; in addition, the standard stud is rotatably assembled on the supporting shaft, so that friction between the standard external thread and the external thread to be detected is reduced, and the detection precision and the service life of the measuring joint are further improved.
furthermore, the support shaft is a fastening pin fixedly assembled on the fixed frame, the standard stud is sleeved on the fastening pin in an inosculating manner, and the axial length of the fastening pin is at least twice of the standard thread pitch larger than that of the standard stud, so that the standard stud can slide along the axial direction of the fastening pin.
The beneficial effects are that: the supporting shaft is designed to be the fastening pin, the fastening pin is in interference fit with the pin hole in the fixing frame, the fastening pin is convenient to fixedly assemble on the fixing frame, meanwhile, the fastening pin is of a long shaft structure, the contact area of the standard stud and the fastening pin is increased, and the stability of the standard stud in the rotating and sliding processes is guaranteed.
Further, the mount is door font structure, including horizontal pole and two montants, the fastening pin fixed assembly is in the middle of two montants.
The beneficial effects are that: the door-shaped structure is simpler, and the fixing assembly of the fastening pin is convenient.
furthermore, the fixing frame is provided with a threaded connecting rod for connecting the fixing frame to the dial indicator in a threaded manner.
the beneficial effects are that: the mount passes through threaded connection pole threaded connection on the percentage table, and the dismouting of the mount of being convenient for is favorable to the change and the maintenance of mount and standard double-screw bolt.
Furthermore, a locking nut is spirally assembled on the threaded connecting rod to tightly push the measuring rod of the dial indicator so as to lock the threaded connecting rod on the dial indicator.
the beneficial effects are that: the threaded connecting rod is locked on the dial indicator through the locking nut, and the stability that the external thread pitch diameter runout measuring connector is fixed on the dial indicator is guaranteed.
drawings
FIG. 1 is a schematic structural diagram of an external thread pitch diameter runout measuring device according to the present invention;
FIG. 2 is a schematic view of the instrumented sub of FIG. 1;
In the figure: 1-a sliding seat; 2-a handle; 3-driving the clamping roller; 4-a rod to be detected; 5-adjustable clamping roller; 6-dial indicator; 7-a support frame; 8-a clamping seat; 9-a slide rail; 10-locking a nut; 11-a fixing frame; 12-a fastening pin; 13-standard stud; 14-threaded connecting rod.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings.
The invention relates to a device for measuring the pitch diameter runout of an external thread, which comprises the following specific embodiments:
as shown in fig. 1, the external thread pitch diameter runout measuring device includes a clamping seat 8 and a supporting frame 7, the supporting frame 7 is placed beside the clamping seat 8, of course, in other embodiments, if the bottom plate of the clamping seat is larger, the supporting frame 7 can also be placed on the clamping seat 8.
In this embodiment, the support frame 7 is fixedly provided with the dial indicator 6, the dial indicator 6 is provided with a measuring rod, and the measuring rod is fixedly provided with a measuring joint. Specifically, as shown in fig. 2, the measuring joint includes a fixing frame 11, a threaded connecting rod 14 is arranged on the upper portion of the fixing frame 11, and the measuring joint is in threaded connection with the measuring rod through the threaded connecting rod 14 so as to realize that the measuring joint is fixedly assembled on the measuring rod, so that the fixing frame 11 can be conveniently disassembled and assembled, and the fixing frame 11 and the standard stud 13 can be conveniently replaced and maintained. In other embodiments, the fixing frame is provided with a fixing rod at the upper part thereof, and the fixing rod is fixed on the measuring rod through a hoop so as to facilitate the disassembly and assembly of the fixing frame.
Wherein, the screw thread is equipped with lock nut 10 on the threaded connection pole 14, and lock nut 10 is tight on the measuring stick of percentage table 6 in order to lock threaded connection pole 14 on percentage table 6 after threaded connection pole 14 assembles to target in place to guarantee the fixed stability of measuring joint on percentage table 6. In other embodiments, the lock nut may not be disposed on the threaded connection rod under the condition that the threaded connection rod is relatively fastened to the measuring rod.
In this embodiment, mount 11 is door font structure, including horizontal pole and two montants, and threaded connection pole 14 sets firmly on the horizontal pole, is equipped with the back shaft between two montants, and door font structure is comparatively simple, the fixed assembly of the back shaft of also being convenient for moreover. In other embodiments, the structure of the mount may be adapted as desired.
Specifically, all be equipped with the pinhole on two montants, the back shaft is for wearing the dress and be in two pinholes in order to connect the fastening pin 12 of two montants, it is equipped with standard double-screw bolt 13 to coincide the cover on fastening pin 12, standard double-screw bolt 13 and fastening pin 12 can rotate the assembly in fastening pin 12 circumference, at fastening pin 12 axially sliding fit, design the back shaft as fastening pin 12, fastening pin 12 through with the pinhole interference fit on mount 11, be convenient for with fastening pin 12 fixed mounting on mount 11, fastening pin 12 is a major axis structure simultaneously, the area of contact of standard double-screw bolt 13 with fastening pin 12 has been increased, guarantee standard double-screw bolt 13 and rotate, stability among the slip process, wherein, the axial length of fastening pin 12 is greater than the axial length of standard double-screw bolt 13, in order to guarantee that standard double-screw bolt 13 can follow fastening pin 12 axial slip. In other embodiments, can be with the back shaft design for two coaxial and equal footpath's support shaft section, two support shaft sections set firmly respectively on the montant of corresponding mount, and at this moment, two support shaft sections set up along back shaft axial interval, because two support shaft sections are overhanging structure, consequently can take place slight deformation when the atress, and the influence is measured the accurate measurement of joint to waiting to detect the member.
it should be noted that the standard external thread of the standard stud 13 has a standard thread pitch and a standard thread form angle corresponding to the external thread to be detected on the rod member 4 to be detected, so as to be screw-fitted with the external thread to be detected. Standard studs are made of alloy tool steel or carbon tool steel.
In this embodiment, be equipped with slide rail 9 on the grip slipper 8, the last sliding fit of slide rail 9 has sliding seat 1, rotates on the sliding seat 1 to be equipped with drive pinch roll 3 and adjustable pinch roll 5, and drive pinch roll 3 is equipped with two to the member 4 is detected in cooperation adjustable pinch roll 5 centre gripping. Wherein, the driving clamping roller 3 and the adjustable clamping roller 5 can clamp the rod pieces 4 to be detected with different diameters because the adjustable clamping roller 5 can be adjusted in the up-down direction. It should be noted that the driving pinch roller 3 is a driving roller and the adjustable pinch roller 5 is a driven roller.
Wherein, the left end of two drive grip rollers 3 all is equipped with driven gear, and driven gear transmission is connected with the driving gear, and the driving gear is rotated by the drive of handle 2. In other embodiments, the drive gear may be rotated by a motor to reduce labor intensity.
During detection, a rod piece 4 to be detected is placed on the two driving clamping rollers 3 and then pressed on the large-diameter section of the rod piece 4 to be detected through the adjustable clamping roller 5, so that the rod piece 4 to be detected is clamped between the driving clamping rollers 3 and the adjustable clamping rollers 5; then, the height of the support frame 7 is adjusted, so that a standard stud 13 of a measuring joint below the dial indicator 6 is in spiral fit with the external thread to be detected on the rod piece 4 to be detected and is in complete contact with the external thread to be detected, and then the dial indicator is zeroed; and finally, the handle 2 is shaken to drive the two driving clamping rollers 3 to drive the rod piece 4 to be detected to rotate until the rod piece 4 to be detected rotates for a circle, and the offset is read out through a dial indicator, namely the runout degree of the pitch diameter of the thread, so that the detection is rapid and accurate. Moreover, the external thread of the standard stud 13 has a plurality of thread pitches, so that the standard stud 13 can measure a plurality of groups of thread pitch diameters at one time to obtain the average runout degree, and the accuracy is higher; in addition, the standard stud 13 is rotatably assembled on the fastening pin 12, so that friction between the standard external thread and the external thread to be detected is reduced, and the detection precision and the service life of the measuring joint are further improved.
it should be noted that the threaded section of the rod 4 to be detected in this embodiment is short, and the runout of the thread pitch diameter at only one position can be detected. In other embodiments, if the threaded section of the rod piece to be detected is long, several positions need to be detected more, and at this time, after the position of the measuring joint is adjusted to be high by the support frame, the sliding seat is directly slid to adjust the position of the rod piece to be detected, so that the measuring joint can correspond to the next measuring position of the rod piece to be detected; or the position of the sliding seat is not adjusted, and the position of the support frame is adjusted after the position of the measuring joint is increased by the support frame, so that the measuring joint can correspond to the next measuring position of the rod piece to be detected.
in the specific embodiment of the external thread pitch diameter runout measuring joint according to the present invention, the structure of the external thread pitch diameter runout measuring joint in this embodiment is the same as that of the measuring joint in the specific embodiment of the external thread pitch diameter runout measuring apparatus described above, and details thereof are not repeated herein.
Claims (10)
1. External screw thread pitch diameter measurement connects, its characterized in that includes:
The fixing frame is fixedly assembled on the measuring rod of the dial indicator;
The supporting shaft is fixedly assembled on the fixing frame;
The standard stud is provided with a standard external thread, and the standard external thread is provided with a standard thread pitch and a standard thread form angle which are used for corresponding to the external thread to be detected on the rod piece to be detected so as to be in spiral fit with the external thread to be detected;
The standard stud is sleeved on the support shaft in an inosculating mode, the standard stud and the support shaft are assembled in a rotating mode in the circumferential direction of the support shaft and assembled in a sliding mode in the axial direction of the support shaft, and when the standard external thread is matched with the external thread to be detected in a spiral mode, the standard stud is driven by the rotating rod piece to be detected to rotate in the circumferential direction of the support shaft and slide in the axial direction of the support shaft.
2. the externally threaded pitch diameter runout measuring joint of claim 1, wherein the support shaft is a fastening pin fixedly assembled on the fixing frame, the standard stud is fitted on the fastening pin, and the axial length of the fastening pin is at least twice as large as the axial length of the standard stud by a standard pitch so that the standard stud can slide axially along the fastening pin.
3. The external thread pitch diameter runout measuring joint of claim 2, wherein the fixing frame is of a door-shaped structure and comprises a cross rod and two vertical rods, and the fastening pin is fixedly assembled between the two vertical rods.
4. The external thread pitch diameter runout measuring joint according to claim 1, 2 or 3, wherein the fixing frame is provided with a threaded connecting rod for connecting the fixing frame to the dial indicator in a threaded manner.
5. the external thread pitch diameter runout measuring joint according to claim 4, wherein the threaded connecting rod is spirally provided with a locking nut so as to tightly push against the dial indicator to lock the threaded connecting rod on the dial indicator.
6. External screw thread pitch diameter measuring device that beats, its characterized in that includes:
The clamping seat is used for clamping the rod piece to be detected and driving the rod piece to be detected to rotate;
The supporting frame is arranged on the clamping seat or arranged beside the clamping seat;
The dial indicator is fixed on the support frame and is provided with a measuring rod;
the measuring joint comprises a fixed frame, a supporting shaft and a standard stud;
The fixed frame is fixedly assembled on the measuring rod;
The supporting shaft is fixedly assembled on the fixing frame;
The standard stud is provided with a standard external thread, and the standard external thread is provided with a standard thread pitch and a standard thread form angle which are used for corresponding to the external thread to be detected on the rod piece to be detected so as to be in spiral fit with the external thread to be detected;
The standard stud is sleeved on the support shaft in an inosculating mode, the standard stud and the support shaft are assembled in a rotating mode in the circumferential direction of the support shaft and assembled in a sliding mode in the axial direction of the support shaft, and when the standard external thread is matched with the external thread to be detected in a spiral mode, the standard stud is driven by the rotating rod piece to be detected to rotate in the circumferential direction of the support shaft and slide in the axial direction of the support shaft.
7. The external thread pitch diameter runout measuring device of claim 6, wherein the supporting shaft is a fastening pin fixedly assembled on the fixing frame, the standard stud is fittingly sleeved on the fastening pin, and the axial length of the fastening pin is at least twice as large as the standard thread pitch than that of the standard stud, so that the standard stud can slide axially along the fastening pin.
8. The external thread pitch diameter runout measuring device of claim 7, wherein the fixing frame is of a door-shaped structure and comprises a cross rod and two vertical rods, and the fastening pin is fixedly assembled between the two vertical rods.
9. The external thread pitch diameter runout measuring device of claim 6, 7 or 8, wherein the fixing frame is provided with a threaded connecting rod, and the fixing frame is in threaded connection with a dial indicator.
10. The external thread pitch diameter runout measuring device of claim 9, wherein the threaded connecting rod is screwed with a lock nut to tightly push against the measuring rod of the dial indicator so as to lock the threaded connecting rod on the dial indicator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910866110.9A CN110579148B (en) | 2019-09-12 | 2019-09-12 | External thread pitch diameter runout measuring joint and measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910866110.9A CN110579148B (en) | 2019-09-12 | 2019-09-12 | External thread pitch diameter runout measuring joint and measuring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110579148A true CN110579148A (en) | 2019-12-17 |
| CN110579148B CN110579148B (en) | 2021-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910866110.9A Active CN110579148B (en) | 2019-09-12 | 2019-09-12 | External thread pitch diameter runout measuring joint and measuring device |
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| Country | Link |
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| CN (1) | CN110579148B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3433710B2 (en) * | 1999-11-18 | 2003-08-04 | 株式会社ミツトヨ | V-groove shape measuring method and apparatus |
| CN101813449A (en) * | 2010-04-05 | 2010-08-25 | 浙江新杰克缝纫机股份有限公司 | Bevel gear testing tool |
| CN203083480U (en) * | 2013-03-18 | 2013-07-24 | 唐山通力齿轮有限公司 | Gear radial run-out detection tool |
| CN206959720U (en) * | 2017-03-06 | 2018-02-02 | 沈阳工业大学 | Screw thread bounce dial gauge |
| CN208805129U (en) * | 2018-11-09 | 2019-04-30 | 荆州市锦钿航空配件股份有限公司 | Pitch diameter of thread bounce gauge |
-
2019
- 2019-09-12 CN CN201910866110.9A patent/CN110579148B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3433710B2 (en) * | 1999-11-18 | 2003-08-04 | 株式会社ミツトヨ | V-groove shape measuring method and apparatus |
| CN101813449A (en) * | 2010-04-05 | 2010-08-25 | 浙江新杰克缝纫机股份有限公司 | Bevel gear testing tool |
| CN203083480U (en) * | 2013-03-18 | 2013-07-24 | 唐山通力齿轮有限公司 | Gear radial run-out detection tool |
| CN206959720U (en) * | 2017-03-06 | 2018-02-02 | 沈阳工业大学 | Screw thread bounce dial gauge |
| CN208805129U (en) * | 2018-11-09 | 2019-04-30 | 荆州市锦钿航空配件股份有限公司 | Pitch diameter of thread bounce gauge |
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| Publication number | Publication date |
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| CN110579148B (en) | 2021-08-06 |
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