CN114166084A - Device for measuring runout of pitch diameter of conical surface opposite thread - Google Patents
Device for measuring runout of pitch diameter of conical surface opposite thread Download PDFInfo
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- CN114166084A CN114166084A CN202110729596.9A CN202110729596A CN114166084A CN 114166084 A CN114166084 A CN 114166084A CN 202110729596 A CN202110729596 A CN 202110729596A CN 114166084 A CN114166084 A CN 114166084A
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- 238000005259 measurement Methods 0.000 claims abstract description 15
- 238000012856 packing Methods 0.000 claims abstract description 5
- 230000009191 jumping Effects 0.000 claims description 4
- 230000003044 adaptive effect Effects 0.000 claims description 3
- 230000002452 interceptive effect Effects 0.000 claims description 3
- 238000010009 beating Methods 0.000 abstract 2
- 238000001514 detection method Methods 0.000 description 8
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
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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
- G01B5/003—Measuring of motor parts
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- General Physics & Mathematics (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The utility model provides a device for conical surface is to measuring of beating of screw pitch diameter, the on-line screen storage device comprises a base, a housing, the positioning core axle, the screw ring, and a support, the tight screw in top, packing ring and percentage table, during the use, will take the measuring part to install in the screw hole of screw ring, afterbody and the packing ring complex threaded connection through the positioning core axle make the head of positioning core axle push up in taking the measuring part's hole, rotatory screw ring a week afterwards, the biggest swing value of the percentage table of top in screw ring lateral wall is read out, the internal cone of this part is to the value of beating of screw pitch diameter. According to the invention, the pitch diameter of the thread of the small part is converted into the easily-detected outer circular surface through the thread ring, and then the run-out value is measured by using the dial indicator, so that the problem that the pitch diameter data of the thread is difficult to acquire to establish the pitch diameter reference of the thread during three-coordinate measurement is solved, the efficiency of detecting the run-out of the pitch diameter of the thread by the conical surface is improved, the labor intensity of workers for detecting the part is reduced, and the production efficiency of the part is improved.
Description
Technical Field
The invention belongs to the technical field of aviation part detection, and particularly relates to a device for measuring the run-out of a conical surface on a thread pitch diameter.
Background
At present, the jumping requirement of a conical surface on the pitch diameter of a thread is often required to be detected in parts such as a pipe joint, a three-way joint and a bent pipe joint of an aero-engine. The part to be detected is shown in figures 12-13, and the runout value of the inner conical surface relative to the thread center reference needs to be detected. The conventional method adopts three-coordinate measurement, the data of the threads are difficult to acquire to establish the pitch diameter reference of the threads, the measurement needs to design a thread ring to be matched with the three-coordinate detection, and the detection is troublesome, so that a special measuring device needs to be designed to carry out the detection quickly and conveniently.
Disclosure of Invention
In order to solve the technical problem, the invention provides a device for measuring the run-out of the pitch diameter of the thread by the conical surface.
The invention is realized by the following technical scheme.
The invention provides a device for measuring the run-out of a conical surface to a thread pitch diameter, which comprises a base, a shell, a positioning mandrel, a thread ring, a support, a jacking screw, a gasket and a dial indicator, wherein the base is in a circular truncated cone shape, and a step through hole is formed from the lower end to the upper end of the base; the shell is arranged on the base, and the middle part of the shell is provided with a through hole which is adaptive to the outer diameter of the positioning mandrel; the threaded ring is arranged on the shell and is disc-shaped, and the middle part of the threaded ring is provided with an internal threaded hole corresponding to the external thread of the part to be detected; the head part of the positioning mandrel is conical, and the tail part of the positioning mandrel is provided with an external thread; the gasket is fixedly arranged in a step through hole of the base, and a threaded hole matched with an external thread arranged at the tail part of the positioning mandrel is formed in the middle of the gasket; the support is L-shaped, the lower end of the support is fixed on the outer side surface of the shell, and the upper end of the support extends upwards to the threaded ring; the dial indicator penetrates through the other end of the bracket and abuts against the side wall of the threaded ring; the tail part of the positioning mandrel is matched with the external thread of the gasket, the head part of the positioning mandrel passes through the step through hole of the base, enters the shell and penetrates out of the upper end surface of the shell, so that the head part of the positioning mandrel enters the threaded inner hole of the threaded ring; when the device is used, a part to be measured is arranged in a threaded hole of a threaded ring, the tail of the positioning mandrel is in threaded connection with the washer, the position of the positioning mandrel is adjusted, the head of the positioning mandrel is enabled to be propped against an inner hole of the part to be measured, then the threaded ring is rotated for a circle, and the maximum swing value of the dial indicator propped against the side wall of the threaded ring is read, namely the value of the inner conical surface of the part jumping against the middle diameter of the thread.
Furthermore, the positioning device also comprises a nut which is arranged at the tail part of the positioning core shaft, and the positioning core shaft can be driven to rotate by rotating the nut, so that the positioning core shaft can move up and down in the shell.
Furthermore, the device also comprises a jacking screw, wherein the side wall of the shell is provided with a threaded hole matched with the jacking screw, and the jacking screw can enter the shell from the side wall of the shell and tightly jacks on the positioning core shaft.
Further, two bracket screws 14 are included, and the two bracket screws 14 fasten the bracket to the outer side wall of the housing from the bottom of the bracket.
The dial indicator is characterized by further comprising a clamping screw, a transverse through hole is formed in the upper end of the support, the dial indicator penetrates through the transverse through hole formed in the upper end of the support and then abuts against the threaded ring, the clamping screw is arranged at the intersection of the support and the dial indicator, and the dial indicator is tightly fixed in the transverse through hole formed in the upper end of the support.
Furthermore, still include a stop screw, the position department that the positioning core axle got into the casing is provided with the keyway along positioning core axle axis direction, the casing lateral wall is provided with the internal thread hole that suits with stop screw, stop screw can follow the outside keyway that gets into the positioning core axle of casing lateral wall in.
Further, still include the spring, positioning core axle middle part is provided with the shaft shoulder, the spring passes positioning core axle and sets up between shaft shoulder and packing ring.
Furthermore, the base screw penetrates through the gasket and then is screwed in the step hole in the base.
Furthermore, the connecting device also comprises a connecting screw, wherein the connecting screw penetrates into the shell from the step hole of the base and connects the base and the shell into a whole.
Furthermore, the thread bottom of the internal thread of the threaded ring is grooved, and the top of the internal thread of the threaded ring is flattened, so that the internal thread of the threaded ring is prevented from interfering with the external thread of the part to be measured, and the joint of the pitch diameter of the thread of the part and the pitch diameter of the threaded ring is ensured.
Furthermore, the outer convex conical surface of the positioning mandrel can be changed into an inner concave conical surface to realize the detection of the run-out of the outer convex conical surface part on the pitch diameter of the thread; meanwhile, the adjustment can be carried out according to the conical surface angles of different parts.
The invention has the beneficial effects that: by implementing the invention, the pitch diameter of the thread of the small part is converted into the easily-detected outer circular surface through the thread ring, the size of the pitch diameter jump of the inner conical surface of the small part is amplified through the installation of the thread ring, and the jump value is measured by using the dial indicator, so that the problem that the pitch diameter datum of the thread is difficult to acquire during three-coordinate measurement to establish is solved, the efficiency of detecting the pitch diameter jump of the thread by the conical surface is improved, the labor intensity of workers for detecting the part is reduced, the production efficiency of the part is improved, the production cost of the part is reduced, and the benefit of enterprises is improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic top view of the present invention;
FIG. 3 is a view from B-B of FIG. 2 in accordance with the present invention;
FIG. 4 is a schematic view of the housing construction of the present invention;
FIG. 5 is a bottom view of the housing of the present invention;
FIG. 6 is a view of the invention from the C-C direction of FIG. 5;
FIG. 7 is a left side view of FIG. 5 of the present invention;
FIG. 8 is a schematic structural view of a positioning mandrel of the present invention;
FIG. 9 is a view from direction D-D of FIG. 8 in accordance with the present invention;
FIG. 10 is a top view of the threaded collar of the present invention;
FIG. 11 is a view from E-E of FIG. 10 in accordance with the present invention;
FIG. 12 is a top view of the part to be inspected of the present invention;
FIG. 13 is a view from the direction A-A of FIG. 12 in accordance with the present invention;
in the figure: 1-base, 2-shell, 3-positioning mandrel, 31-key slot, 4-thread ring, 41-watch ring belt, 42-knurling, 5-support, 6-limiting screw, 7-tightening screw, 8-connecting screw, 9-spring, 10-gasket, 11-nut, 12-base screw, 13-dial indicator, 14-support screw, 14-clamping screw, 15-clamping screw.
Detailed Description
The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.
As shown in fig. 1-11, a device for measuring runout of a conical surface to a thread pitch diameter comprises a base 1, a shell 2, a positioning mandrel 3, a thread ring 4, a bracket 5, a jacking screw 7, a gasket 10 and a dial indicator 13, wherein the base 1 is in a circular truncated cone shape, and a step through hole is formed from the lower end to the upper end of the base 1; the shell 2 is arranged on the base 1, and the middle part of the shell is provided with a through hole which is adaptive to the outer diameter of the positioning mandrel 3; the threaded ring 4 is arranged on the shell 2 and is disc-shaped, and the middle part of the threaded ring is provided with an internal threaded hole corresponding to the external thread of the part to be detected; the head of the positioning mandrel 3 is conical, and the tail of the positioning mandrel is provided with external threads; the gasket 10 is fixedly arranged in a step through hole of the base 1, and a threaded hole matched with an external thread arranged at the tail part of the positioning mandrel 3 is formed in the middle of the gasket; the bracket 5 is L-shaped, the lower end of the bracket is fixed on the outer side surface of the shell 2, and the upper end of the bracket extends upwards to the limb thread ring 4; the dial indicator 13 penetrates through the other end of the bracket 5 and is propped against the side wall of the threaded ring 4; the tail part of the positioning mandrel 3 is matched and installed with the external thread of the gasket 10, the head part of the positioning mandrel 3 passes through the step through hole of the base 1 and then enters the shell 2, and penetrates out of the upper end surface of the shell 2, so that the head part of the positioning mandrel 3 enters the threaded inner hole of the threaded ring 4; when the device is used, a part to be measured is arranged in a threaded hole of the threaded ring 4, the tail of the positioning mandrel 3 is in threaded connection with the gasket 10, the position of the positioning mandrel 3 is adjusted, the head of the positioning mandrel 3 is enabled to be propped against an inner hole of the part to be measured, then the threaded ring 4 is rotated for a circle, and the maximum swing value of the dial indicator 13 propped against the side wall of the threaded ring 4 is read, namely the value of the inner conical surface of the part jumping against the middle diameter of the thread.
Still include a nut 11 and install in the afterbody of positioning core axle 3, can drive positioning core axle 3 through rotatory nut 11 and rotate, realize the up-and-down motion of positioning core axle 3 in casing 2.
The clamping device further comprises a jacking screw 7, a threaded hole matched with the jacking screw 7 is formed in the side wall of the shell 2, and the jacking screw 7 can enter the shell 2 from the side wall of the shell 2 and tightly jacks the positioning core shaft 3.
Two bracket screws 14 are also included, the two bracket screws 14 fastening the bracket 5 to the outer side wall of the housing 2 from the bottom of the bracket 5.
The dial indicator is characterized by further comprising a clamping screw 15, a transverse through hole is formed in the upper end of the support 5, the dial indicator 13 penetrates through the transverse through hole formed in the upper end of the support 5 and then abuts against the threaded ring 4, the clamping screw 15 is arranged at the intersection of the support 5 and the dial indicator 13, and the dial indicator 13 is tightly fixed in the transverse through hole formed in the upper end of the support 5.
Still include a stop screw 6, the position department that positioning core axle 3 got into casing 2 is provided with along 3 axis direction's of positioning core axle keyway 31, and casing 2 lateral wall is provided with the internal thread hole that suits with stop screw 6, and stop screw 6 can follow casing 2 lateral wall outside and get into in the keyway 31 of positioning core axle 3.
Still include spring 9, positioning core shaft 3 middle part is provided with the shaft shoulder, and spring 9 passes positioning core shaft 3 and sets up between shaft shoulder and packing ring 10.
A base screw 12 is further included, and the base screw 12 is screwed into the stepped hole in the base 1 after passing through the washer 10.
Still include connecting screw 8, connecting screw 8 gets into casing 2 after passing from the step hole of base 1, is as an organic whole with base 1 and casing 2 connection.
The internal thread root of the threaded ring 4 is grooved, and the top of the internal thread of the threaded ring 4 is flattened, so that the internal thread of the threaded ring 4 is prevented from interfering with the external thread of a part to be measured, and the joint of the pitch diameter of the thread of the part and the pitch diameter of the threaded ring 4 is ensured. Knurling 42 is arranged on the upper end side and the lower end side of the threaded ring 4, rotation is facilitated, a dial ring belt 41 is arranged in the middle of the side wall of the threaded ring 4, and the dial indicator 13 is abutted to the dial ring belt 41 during measurement.
In order to ensure the detection accuracy, the thread ring 4 needs to be subdivided into certain groups by tolerance grouping processing, the thread ring 4 meeting the matching requirement can be selected during detection, meanwhile, the verticality of the outer surface of the control shell 2 to the pitch diameter of the thread is not more than 0.012mm, and the jump of the marking ring belt 41 to the pitch diameter of the thread is not more than 0.01 mm.
During measurement, the positioning core shaft 3 is adjusted to be positioned at a proper height by rotating the screw cap 11, so that the spring 9 keeps proper elasticity; the method comprises the steps of selecting and matching a proper thread ring 4, screwing a measuring part into the thread ring 4 and placing the measuring part on the upper plane of a shell 2, ensuring that the conical surface of a positioning core shaft 3 is tightly attached to the conical surface of the measuring part, screwing a tightening screw 7 after adjustment, fixing the position of the positioning core shaft 3, pushing a dial indicator 13 on a support 5 forward to a meter-making ring belt 41 of the thread ring 4, screwing a clamping screw 15 to fix the position of the dial indicator 13, adjusting the pointer of the dial indicator 13 to be '0', uniformly rotating the thread ring 4 for one circle by hand, and enabling the maximum scale range of the swing of the dial indicator 13 to be the diameter runout value of the conical surface to the thread.
In addition, in specific application, the outer convex conical surface of the positioning mandrel 3 can be changed into an inner concave conical surface to realize the detection of the run-out of the outer convex conical surface part on the pitch diameter of the thread; meanwhile, the adjustment can be carried out according to the conical surface angles of different parts.
Claims (10)
1. The utility model provides a device that is used for conical surface to screw thread pitch diameter to beat and measures which characterized in that: the base is in a round table shape, and a step through hole is formed from the lower end to the upper end of the base; the shell is arranged on the base, and the middle part of the shell is provided with a through hole which is adaptive to the outer diameter of the positioning mandrel; the threaded ring is arranged on the shell and is disc-shaped, and the middle part of the threaded ring is provided with an internal threaded hole corresponding to the external thread of the part to be detected; the head part of the positioning mandrel is conical, and the tail part of the positioning mandrel is provided with an external thread; the gasket is fixedly arranged in a step through hole of the base, and a threaded hole matched with an external thread arranged at the tail part of the positioning mandrel is formed in the middle of the gasket; the support is L-shaped, the lower end of the support is fixed on the outer side surface of the shell, and the upper end of the support extends upwards to the threaded ring; the dial indicator penetrates through the other end of the bracket and abuts against the side wall of the threaded ring; the tail part of the positioning mandrel is matched with the external thread of the gasket, the head part of the positioning mandrel passes through the step through hole of the base, enters the shell and penetrates out of the upper end surface of the shell, so that the head part of the positioning mandrel enters the threaded inner hole of the threaded ring;
when the device is used, a part to be measured is arranged in a threaded hole of a threaded ring, the tail of the positioning mandrel is in threaded connection with the washer, the position of the positioning mandrel is adjusted, the head of the positioning mandrel is enabled to be propped against an inner hole of the part to be measured, then the threaded ring is rotated for a circle, and the maximum swing value of the dial indicator propped against the side wall of the threaded ring is read, namely the value of the inner conical surface of the part jumping against the middle diameter of the thread.
2. The apparatus for taper-on-thread pitch measurement according to claim 1, wherein: the positioning core shaft is arranged on the shell, and the positioning core shaft is arranged on the shell.
3. The apparatus for taper-on-thread pitch measurement according to claim 1, wherein: the shell is characterized by further comprising a jacking screw, wherein the side wall of the shell is provided with a threaded hole matched with the jacking screw, and the jacking screw can enter the shell from the side wall of the shell and tightly jacks on the positioning mandrel.
4. The apparatus for taper-on-thread pitch measurement according to claim 1, wherein: two bracket screws 14 are also included, the two bracket screws 14 securing the bracket to the housing outer side wall from the bracket bottom.
5. The apparatus for taper-on-thread pitch measurement according to claim 1, wherein: the dial indicator is characterized by further comprising a clamping screw, a transverse through hole is formed in the upper end of the support, the dial indicator penetrates through the transverse through hole formed in the upper end of the support and then abuts against the threaded ring, the clamping screw is arranged at the intersection of the support and the dial indicator, and the dial indicator is tightly fixed in the transverse through hole formed in the upper end of the support.
6. The apparatus for taper-on-thread pitch measurement according to claim 1, wherein: still include a stop screw, the position department that the positioning core axle got into the casing is provided with the keyway along positioning core axle axis direction, the casing lateral wall is provided with the internal thread hole that suits with stop screw, stop screw can follow the outside keyway that gets into the positioning core axle of casing lateral wall in.
7. The apparatus for taper-on-thread pitch measurement according to claim 1, wherein: still include the spring, positioning core axle middle part is provided with the shaft shoulder, the spring passes positioning core axle and sets up between shaft shoulder and packing ring.
8. The apparatus for taper-on-thread pitch measurement according to claim 1, wherein: the base screw penetrates through the gasket and then is screwed in the step hole in the base.
9. The apparatus for taper-on-thread pitch measurement according to claim 1, wherein: the connecting screw penetrates through the step hole of the base and then enters the shell, and the base and the shell are connected into a whole.
10. The apparatus for taper-on-thread pitch measurement according to claim 1, wherein: the internal thread root of the threaded ring is grooved, and the top of the internal thread of the threaded ring is flattened, so that the internal thread of the threaded ring is prevented from interfering with the external thread of the part to be measured, and the pitch diameter of the thread of the part is ensured to be attached to the pitch diameter of the threaded ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110729596.9A CN114166084B (en) | 2021-06-29 | 2021-06-29 | Device for measuring pitch diameter runout of taper pair threads |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110729596.9A CN114166084B (en) | 2021-06-29 | 2021-06-29 | Device for measuring pitch diameter runout of taper pair threads |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114166084A true CN114166084A (en) | 2022-03-11 |
| CN114166084B CN114166084B (en) | 2024-02-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110729596.9A Active CN114166084B (en) | 2021-06-29 | 2021-06-29 | Device for measuring pitch diameter runout of taper pair threads |
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| CN (1) | CN114166084B (en) |
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| CN109839048A (en) * | 2019-03-26 | 2019-06-04 | 青岛华瑞汽车零部件股份有限公司 | A kind of cubing of detection brake fuel feed hole gas vent conical surface bounce |
| CN111043930A (en) * | 2019-12-18 | 2020-04-21 | 贵州华烽电器有限公司 | Measuring device for pitch diameter radial run-out of external thread of threaded sleeve |
| CN210664301U (en) * | 2019-12-11 | 2020-06-02 | 湘电风能有限公司 | Portable long stud coaxiality measuring tool |
| CN211291234U (en) * | 2019-09-25 | 2020-08-18 | 江苏帝蒙德轴承有限公司 | Bearing radial run-out detection device |
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2021
- 2021-06-29 CN CN202110729596.9A patent/CN114166084B/en active Active
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| CN201569411U (en) * | 2009-09-28 | 2010-09-01 | 哈尔滨飞机工业集团有限责任公司 | Conversion component for measurement of center coordinate of small-sized bore |
| CN201757635U (en) * | 2010-05-18 | 2011-03-09 | 沈阳飞机工业（集团）有限公司 | Device for detecting runout of relative thread axis of coaxial surface |
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|---|---|
| CN114166084B (en) | 2024-02-27 |
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