CN113532240A - Internal thread depth detection tool - Google Patents
Internal thread depth detection tool Download PDFInfo
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- CN113532240A CN113532240A CN202110620499.6A CN202110620499A CN113532240A CN 113532240 A CN113532240 A CN 113532240A CN 202110620499 A CN202110620499 A CN 202110620499A CN 113532240 A CN113532240 A CN 113532240A
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- 238000001514 detection method Methods 0.000 title claims abstract description 114
- 230000005540 biological transmission Effects 0.000 claims abstract description 5
- 230000001681 protective effect Effects 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 6
- 230000007547 defect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 12
- 238000007689 inspection Methods 0.000 description 6
- 230000003044 adaptive effect Effects 0.000 description 2
- 239000011111 cardboard Substances 0.000 description 2
- 210000005069 ears Anatomy 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012966 insertion method Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction 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
- G01B5/18—Measuring arrangements characterised by the use of mechanical techniques for measuring depth
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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
- G01B5/0002—Arrangements for supporting, fixing or guiding the measuring instrument or the object to be measured
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention discloses an internal thread depth detection tool, aiming at solving the defect of inconvenient thread depth detection of a threaded hole. The thread detection device comprises a transverse shell, a longitudinal shell and a detection rod, wherein the transverse shell is connected with the longitudinal shell, a driving shaft is arranged in the longitudinal shell, a driven shaft is arranged in the transverse shell, the driving shaft is in transmission connection with the driven shaft, the detection rod is detachably connected with the driving shaft, and a thread detection head is arranged at the lower end of the detection rod; a sliding block is arranged in the transverse shell, the detection rod rotates to drive the driven shaft to rotate, and the driven shaft rotates to drive the sliding block to move in the transverse shell. The internal thread depth detection tool greatly facilitates the depth detection of the internal thread of the threaded hole, is simple to operate, and is accurate and reliable in detection.
Description
Technical Field
The invention relates to a detection tool, in particular to an internal thread depth detection tool.
Background
The conventional depth inspection method for internal threads generally adopts three inspection methods: firstly, a thread gauge is directly screwed into a threaded hole; the other is a straight rod method with equivalent substitution; and thirdly, a method for checking the inserted thread of the depth gauge. The direct screw in screw hole method of screw thread rule, because the length of screw thread rule is suitable the inspection of the conventional screw thread degree of depth, but to the inspection of darker screw hole, screw thread rule length is not enough, and this kind of inspection scheme is limited, and screw hole position space is narrow in many times moreover, and the screw thread rule is difficult to be arranged in screw hole top and is rotated downwards, and it is inconvenient to detect the operation. The equivalent straight-bar method of replacing is to insert the threaded hole with long measuring rod, and the length that the gauge block exposes the threaded hole is got respectively to two special cardboards of reuse, and this kind of mode is because the easy slope of cardboard needs adjustment back and forth, and this kind of method efficiency is lower. The depth gauge insertion method is a depth check which is estimated completely by the personal senses when the depth gauge is inserted into the screw thread to the bottom, because the depth gauge is observed only by the naked eye when the depth gauge is inserted into the screw thread, and the detection reliability is poor. The three methods described above are very inaccurate and the inspection of the depth of the tapered threaded hole is very limited.
Disclosure of Invention
The invention overcomes the defect that the thread depth of the threaded hole is inconvenient to detect, and provides the internal thread depth detection tool which is greatly convenient for detecting the depth of the internal thread of the threaded hole, simple to operate and accurate and reliable in detection.
In order to solve the technical problems, the invention adopts the following technical scheme: an internal thread depth detection tool comprises a transverse shell, a longitudinal shell and a detection rod, wherein the transverse shell is connected with the longitudinal shell, a driving shaft is installed in the longitudinal shell, a driven shaft is installed in the transverse shell, the driving shaft is in transmission connection with the driven shaft, the detection rod is detachably connected with the driving shaft, and a thread detection head is arranged at the lower end of the detection rod; a sliding block is arranged in the transverse shell, the detection rod rotates to drive the driven shaft to rotate, and the driven shaft rotates to drive the sliding block to move in the transverse shell.
When the screw hole carries out internal thread degree of depth and detects, aim at the screw hole with the screw thread detection head of detection pole, try earlier and twist several rings, adjust the screw thread detection head to accurate position, guarantee that the screw thread detection head lower extreme just well is in the internal thread upper end position of screw hole, the position of record slider. The detection rod is rotated, the thread detection head is screwed into the threaded hole downwards, the driving shaft rotates along with the detection rod at the moment, the driven shaft is driven to rotate, and the driven shaft rotates to drive the sliding block to move in the transverse shell. When the detection rod rotates to the locking position and cannot rotate any more, the lower end of the thread detection head reaches the lower end of the internal thread in the threaded hole, the position of the sliding block is recorded again, the moving distance of the sliding block is calculated, and the depth of the internal thread in the threaded hole is deduced. And finally, reversely rotating the thread detection head to move out the whole tool. For traditional thread gauge, under the same range condition, the length that the check rod adds vertical shell is far less than thread gauge's whole length, when using in some narrow and small spaces, can arrange the screw hole outside in with horizontal shell, avoids appearing the phenomenon of interfering. Especially in narrow and small space, traditional screw rule can only lay with the screw hole is coaxial, and on the one hand the space requirement above the screw hole is higher, and on the other hand needs one hand to hold when the screw rule is twisted, and the other hand is twisted, and two hands function together, and narrow and small space is limited, and the operation degree of difficulty is big. While the detection rod is screwed by one hand, the detection rod can be positioned by the other hand only by holding the transverse shell, so that the operation is convenient. The internal thread depth detection tool greatly facilitates the depth detection of the internal thread of the threaded hole, is simple to operate, and is accurate and reliable in detection.
Preferably, a screw is installed in the transverse shell, the screw is connected with the driven shaft, a screw hole is formed in the sliding block, and the screw hole is connected with the screw in an adaptive mode.
The driven shaft rotates to drive the screw rod to rotate, the sliding block moves through the matching of the screw hole and the screw rod, and the sliding block moves accurately and reliably.
Preferably, a rotatable positioning seat is installed in the transverse shell, and the driven shaft and the screw rod are respectively connected to two ends of the positioning seat. The screw rod is connected with the driven shaft through the positioning seat, and the connection is convenient and reliable.
Preferably, the screw extends outwardly and the end of the screw is connected to a rotating handle. When the threaded hole position space of waiting to detect is less, can't twist through the finger and move the measuring pole, can rotate the twist grip through rotating the twist grip this moment, screw rod and twist grip together, and the driven shaft rotates and drives the driving shaft and rotate to make the measuring pole rotate along with the driving shaft, the screw thread detects the head screw in threaded hole. The structure arrangement improves the practicability of the whole tool and is convenient for the tool to be used in a narrow space.
Preferably, the end of the transverse shell is connected with a mounting cylinder, and the sliding block is mounted in the mounting cylinder. The installation of slider is convenient for through the arrangement of the installation cylinder.
Preferably, a grating ruler is installed in the installation cylinder, the grating ruler comprises a reading head and a sliding base, and the sliding block is connected with the reading head. The moving distance is measured through the grating ruler, and the measurement is accurate and reliable.
Preferably, the slider is connected with a pointer, the mounting cylinder is provided with an axially arranged long groove, the pointer penetrates through the long groove, and the edge of the long groove on the mounting cylinder is provided with scale marks. The moving distance of the sliding block is determined by aligning the pointer on the sliding block with the scale marks, the structure is simple, and the cost is low.
Preferably, the outer wall of the detection rod is in a polygonal structure. The polygonal detection rod is convenient to screw.
Preferably, the transverse shell and the longitudinal shell are hinged together, a telescopic protective sleeve is connected between the transverse shell and the longitudinal shell, and a universal joint is connected between the driving shaft and the driven shaft.
Horizontal shell and vertical shell are connected through articulated mode, can rotation each other between the two to adjust the contained angle between the two, be convenient for adjust the use in the space of difference.
Preferably, be equipped with the mounting hole in the measuring pole, install the buffer beam in the mounting hole, connect buffer spring between buffer beam upper end and the measuring pole, the thread detection head is extended to the buffer beam lower extreme, be equipped with on the measuring pole outer wall with the spout of mounting hole intercommunication, be equipped with the location head on the buffer beam, the location head supports at the spout lower extreme, the spout edge is equipped with the scale mark on the measuring pole outer wall, be equipped with the ratchet on the buffer beam, articulated pawl on the measuring pole, pawl one end card is in the tooth's socket of ratchet and the pawl other end connects the press head.
The in-process of screw thread hole is twisted downwards to the screw thread detection head, and behind the screw hole bottom, along with the further screw in downwards of screw thread detection head, the buffer beam is jack-up upwards, and the pawl on the detection pole is constantly slided to the ratchet on the buffer beam, and the head that fixes a position simultaneously slides in the spout. When the thread detection head is screwed in place, the buffer rod stops moving, after the thread depth of the threaded hole is read, the thread detection head reversely rotates to be separated from the threaded hole, and the pawl is clamped in a tooth groove of the ratchet bar in the process, so that the buffer rod and the detection rod cannot move relatively between the axial directions. After the tool moves out of the threaded hole, the distance of the positioning head moving is read through the scale marks on the detection rod, the distance of the buffer rod moving axially relative to the detection rod can be calculated, and therefore the depth of the threaded hole is deduced. The pressing head is pressed to enable the pawl to be separated from the tooth groove of the ratchet bar, and the buffer rod is returned. Through the structure, the detection of the depth of the threaded hole is realized while the depth of the thread in the threaded hole is detected, and the operation is convenient.
Compared with the prior art, the invention has the beneficial effects that: (1) the internal thread depth detection tool greatly facilitates the depth detection of the internal thread in the threaded hole, and is simple to operate and accurate and reliable in detection; (2) the detection of the depth of the threaded hole is realized while the depth of the thread in the threaded hole is detected, and the operation is convenient.
Drawings
FIG. 1 is a schematic structural view of embodiment 1 of the present invention;
FIG. 2 is a schematic structural view of embodiment 2 of the present invention;
FIG. 3 is a schematic structural view of embodiment 3 of the present invention;
FIG. 4 is an enlarged partial schematic view of FIG. 3 of the present invention;
FIG. 5 is a schematic structural view of embodiment 4 of the present invention;
in the figure: 1. the device comprises a transverse shell, 2, a longitudinal shell, 3, a detection rod, 4, a driving shaft, 5, a driven shaft, 6, a thread detection head, 7, a sliding block, 8, an adjusting hole, 9, an extending part, 10, a longitudinal bearing, 11, a transverse bearing, 12, a screw rod, 13, a positioning seat, 14, a mounting barrel, 15, a bevel gear, 16, a protective sleeve, 17, a hinge lug, 18, a rotating handle, 19, a mounting hole, 20, a buffer rod, 21, a buffer spring, 22, a sliding groove, 23, a positioning head, 24, a ratchet rack, 25, a pawl, 26, a pressing head, 27, a positioning spring, 28, a pressing sliding column, 29, a sliding cavity, 30 and an avoiding groove.
Detailed Description
The technical scheme of the invention is further described in detail by the following specific embodiments in combination with the attached drawings:
example 1: an internal thread depth detection tool (see attached figure 1) comprises a transverse shell 1, a longitudinal shell 2 and a detection rod 3, wherein the transverse shell and the longitudinal shell are connected together to form an L-shaped structure, a driving shaft 4 is installed in the longitudinal shell, a driven shaft 5 is installed in the transverse shell, the driving shaft is in transmission connection with the driven shaft, the detection rod is detachably connected with the driving shaft, and a thread detection head 6 is arranged at the lower end of the detection rod; a sliding block 7 is installed in the transverse shell, the detection rod rotates to drive the driven shaft to rotate, and the driven shaft rotates to drive the sliding block to move in the transverse shell. The outer wall of the detection rod is of a polygonal structure. The detection rod is internally provided with an adjusting hole 8, the lower end of the driving shaft is provided with an extending part 9 which extends downwards to form a longitudinal shell, the extending part is inserted into the adjusting hole, the adjusting hole and the extending part are both in a polygonal structure, and the extending part can axially move in the adjusting hole. The structure can improve the detection depth of the whole tool to the threaded hole, shorten the length of the whole tool in the longitudinal direction and facilitate operation in a narrow space.
A screw 12 is arranged in the transverse shell and connected with a driven shaft, a screw hole is formed in the sliding block and is in adaptive connection with the screw. A rotatable positioning seat 13 is arranged in the transverse shell, and the driven shaft and the screw rod are respectively connected to two ends of the positioning seat. The end of the transverse shell is connected with a mounting cylinder 14, and the sliding block is mounted in the mounting cylinder. According to the first scheme, a grating ruler is installed in an installation cylinder and comprises a reading head and a sliding base, and a sliding block is connected with the reading head. Or, in the second scheme, the sliding block is connected with a pointer, the mounting cylinder is provided with an axially arranged long groove, the pointer penetrates through the long groove, and the edge of the long groove on the mounting cylinder is provided with scale marks. Both the first and second schemes are also possible. The driving shaft and the driven shaft are in meshing transmission through two bevel gears 15, one bevel gear is tightly mounted on the driving shaft, and the other bevel gear is tightly mounted on the driven shaft. The outer diameter of the thread detection head is larger than that of the detection rod.
When the screw hole carries out internal thread degree of depth and detects, aim at the screw hole with the screw thread detection head of detection pole, try earlier and twist several rings, adjust the screw thread detection head to accurate position, guarantee that the screw thread detection head lower extreme just well is in the internal thread upper end position of screw hole, the position of record slider. The detection rod is rotated, the thread detection head is screwed into the threaded hole downwards, the driving shaft rotates along with the detection rod at the moment, the driven shaft is driven to rotate, and the driven shaft rotates to drive the sliding block to move in the transverse shell. When the detection rod rotates to the locking position and cannot rotate any more, the lower end of the thread detection head reaches the lower end of the internal thread in the threaded hole, the position of the sliding block is recorded again, the moving distance of the sliding block is calculated, and the depth of the internal thread in the threaded hole is deduced. And finally, reversely rotating the thread detection head to move out the whole tool. For traditional thread gauge, under the same range condition, the length that the check rod adds vertical shell is far less than thread gauge's whole length, when using in some narrow and small spaces, can arrange the screw hole outside in with horizontal shell, avoids appearing the phenomenon of interfering. Especially in narrow and small space, traditional screw rule can only lay with the screw hole is coaxial, and on the one hand the space requirement above the screw hole is higher, and on the other hand needs one hand to hold when the screw rule is twisted, and the other hand is twisted, and two hands function together, and narrow and small space is limited, and the operation degree of difficulty is big. While the detection rod is screwed by one hand, the detection rod can be positioned by the other hand only by holding the transverse shell, so that the operation is convenient. The internal thread depth detection tool greatly facilitates the depth detection of the internal thread of the threaded hole, is simple to operate, and is accurate and reliable in detection.
Example 2: the structure of the internal thread depth detection tool (see the attached figure 2) is similar to that of the tool in embodiment 1, and the main difference is that in the embodiment, a transverse shell and a longitudinal shell are hinged together, a telescopic protective sleeve 16 is connected between the transverse shell and the longitudinal shell, and a universal joint is connected between a driving shaft and a driven shaft. All be equipped with articulated ear 17 on horizontal shell and the vertical shell, hand-over through the articulated shaft between two articulated ears. The protective sleeve can adopt a corrugated pipe, and a spiral metal wire is arranged in the corrugated pipe for increasing the strength. The other structure is the same as embodiment 1. Horizontal shell and vertical shell are connected through articulated mode, can rotation each other between the two to adjust the contained angle between the two, be convenient for adjust the use in the space of difference.
Example 3: a tool for detecting the depth of an internal thread (see attached figures 3 and 4) is similar to that of embodiment 1 in structure, and mainly differs from the embodiment in that a screw extends outwards, and the end of the screw is connected with a rotating handle 18. Be equipped with mounting hole 19 in the measuring pole, installation buffer beam 20 in the mounting hole, connect buffer spring 21 between buffer beam upper end and the measuring pole, the thread detection head is extended to the buffer beam lower extreme, be equipped with on the measuring pole outer wall with the spout 22 of mounting hole intercommunication, be equipped with location head 23 on the buffer beam, location head supports at the spout lower extreme, the spout edge is equipped with the scale mark on the measuring pole outer wall, be equipped with ratchet bar 24 on the buffer beam, articulated pawl 25 on the measuring pole, pawl one end card is in the tooth's socket of ratchet bar the pawl other end connection press head 26. A positioning spring 27 is connected between the pawl and the detection rod, a T-shaped pressing sliding column 28 is connected to the detection rod, the end part of the pressing sliding column extends outwards to form the detection rod, and a pressing head abuts against the pressing sliding column. The detection rod is provided with a sliding cavity 29 corresponding to the pressing sliding column, one end of the pressing sliding column is slidably arranged in the sliding cavity, the detection rod is provided with an avoiding groove 30 corresponding to the pawl, and the pawl and the positioning spring are arranged in the avoiding groove. The other structure is the same as embodiment 1.
When the threaded hole position space of waiting to detect is less, can't twist through the finger and move the measuring pole, can rotate the twist grip through rotating the twist grip this moment, screw rod and twist grip together, and the driven shaft rotates and drives the driving shaft and rotate to make the measuring pole rotate along with the driving shaft, the screw thread detects the head screw in threaded hole. The structure arrangement improves the practicability of the whole tool and is convenient for the tool to be used in a narrow space.
The in-process of screw thread hole is twisted downwards to the screw thread detection head, and behind the screw hole bottom, along with the further screw in downwards of screw thread detection head, the buffer beam is jack-up upwards, and the pawl on the detection pole is constantly slided to the ratchet on the buffer beam, and the head that fixes a position simultaneously slides in the spout. When the thread detection head is screwed in place, the buffer rod stops moving, after the thread depth of the threaded hole is read, the thread detection head reversely rotates to be separated from the threaded hole, and the pawl is clamped in a tooth groove of the ratchet bar in the process, so that the buffer rod and the detection rod cannot move relatively between the axial directions. After the tool moves out of the threaded hole, the distance of the positioning head moving is read through the scale marks on the detection rod, the distance of the buffer rod moving axially relative to the detection rod can be calculated, and therefore the depth of the threaded hole is deduced. And the pressing sliding column is pressed to push the pressing head to move so that the pawl is separated from the tooth groove of the ratchet bar, and the buffer rod is returned. Through the structure, the detection of the depth of the threaded hole is realized while the depth of the thread in the threaded hole is detected, and the operation is convenient.
In order to detect the screw hole in narrow and small space for the convenience, the frock earlier upwards promotes earlier the messenger buffer beam and hides in the mounting hole with the buffer beam before work to reduce the fore-and-aft whole length of whole frock, be convenient for arrange the frock in narrow and small space, treat that the screw thread detection head aims at the screw hole after, press the strut of pressing, press the strut and promote the press head and remove the tooth's socket that makes the pawl break away from the ratchet, realize that the screw thread detection head is stretched out in the downward return of buffer beam.
Example 4: a tool for detecting the depth of an internal thread (see an attached figure 5) is similar to that of embodiment 3, and mainly differs from the tool in the embodiment in that a transverse shell and a longitudinal shell are hinged together, a telescopic protective sleeve is connected between the transverse shell and the longitudinal shell, and a universal joint is connected between a driving shaft and a driven shaft. All be equipped with the hinge ear on horizontal shell and the vertical shell, hand-over through the articulated shaft between two hinge ears. The protective sleeve can adopt a corrugated pipe, and a spiral metal wire is arranged in the corrugated pipe for increasing the strength. The other structure is the same as embodiment 3. Horizontal shell and vertical shell are connected through articulated mode, can rotation each other between the two to adjust the contained angle between the two, be convenient for adjust the use in the space of difference.
The above-described embodiments are merely preferred embodiments of the present invention, which is not intended to be limiting in any way, and other variations and modifications are possible without departing from the scope of the invention as set forth in the appended claims.
Claims (10)
1. An internal thread depth detection tool is characterized by comprising a transverse shell, a longitudinal shell and a detection rod, wherein the transverse shell is connected with the longitudinal shell, a driving shaft is installed in the longitudinal shell, a driven shaft is installed in the transverse shell, the driving shaft is in transmission connection with the driven shaft, the detection rod is detachably connected with the driving shaft, and a thread detection head is arranged at the lower end of the detection rod; a sliding block is arranged in the transverse shell, the detection rod rotates to drive the driven shaft to rotate, and the driven shaft rotates to drive the sliding block to move in the transverse shell.
2. The tool for detecting the depth of the internal thread as claimed in claim 1, wherein a screw is mounted in the transverse housing, the screw is connected with the driven shaft, a screw hole is formed in the sliding block, and the screw hole is connected with the screw in a matched mode.
3. The tool for detecting the depth of the internal thread as claimed in claim 2, wherein a rotatable positioning seat is installed in the transverse housing, and the driven shaft and the screw rod are respectively connected to two ends of the positioning seat.
4. The tool for detecting the depth of the internal thread as claimed in claim 2, wherein the screw rod extends outwards, and the end part of the screw rod is connected with a rotating handle.
5. The tool for detecting the depth of the internal thread as claimed in claim 1, wherein the end of the transverse shell is connected with a mounting cylinder, and the sliding block is mounted in the mounting cylinder.
6. The tool for detecting the depth of the internal thread as claimed in claim 5, wherein a grating ruler is installed in the installation barrel, the grating ruler comprises a reading head and a sliding base, and the sliding block is connected with the reading head.
7. The tool for detecting the depth of the internal thread as claimed in claim 5, wherein the sliding block is connected with a pointer, the mounting cylinder is provided with an axially arranged long groove, the pointer penetrates through the long groove, and the edge of the long groove on the mounting cylinder is provided with scale marks.
8. The tool for detecting the depth of the internal thread as claimed in any one of claims 1 to 7, wherein the outer wall of the detection rod is of a polygonal structure.
9. The tool for detecting the depth of the internal thread as claimed in any one of claims 1 to 7, wherein the transverse shell and the longitudinal shell are hinged together, a telescopic protective sleeve is connected between the transverse shell and the longitudinal shell, and a universal joint is connected between the driving shaft and the driven shaft.
10. The tool for detecting the depth of the internal thread according to any one of claims 1 to 7, wherein a mounting hole is formed in the detection rod, a buffer rod is mounted in the mounting hole, a buffer spring is connected between the upper end of the buffer rod and the detection rod, a thread detection head extends out of the lower end of the buffer rod, a chute communicated with the mounting hole is formed in the outer wall of the detection rod, a positioning head is arranged on the buffer rod and supported at the lower end of the chute, scale marks are arranged on the edge of the chute on the outer wall of the detection rod, a ratchet bar is arranged on the buffer rod, a pawl is hinged to the detection rod, one end of the pawl is clamped in a tooth groove of the ratchet bar, and the other end of the pawl is connected with a pressing head.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110620499.6A CN113532240B (en) | 2021-06-03 | 2021-06-03 | Internal thread depth detection tool |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110620499.6A CN113532240B (en) | 2021-06-03 | 2021-06-03 | Internal thread depth detection tool |
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| CN113532240A true CN113532240A (en) | 2021-10-22 |
| CN113532240B CN113532240B (en) | 2023-01-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2638767A (en) * | 2024-03-01 | 2025-09-03 | Jaguar Land Rover Ltd | A thread depth gauge |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2638767A (en) * | 2024-03-01 | 2025-09-03 | Jaguar Land Rover Ltd | A thread depth gauge |
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| CN113532240B (en) | 2023-01-10 |
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