CN108007319B - A kind of threaded hole effective depth measuring device - Google Patents
A kind of threaded hole effective depth measuring device Download PDFInfo
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- CN108007319B CN108007319B CN201711310384.7A CN201711310384A CN108007319B CN 108007319 B CN108007319 B CN 108007319B CN 201711310384 A CN201711310384 A CN 201711310384A CN 108007319 B CN108007319 B CN 108007319B
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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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- General Physics & Mathematics (AREA)
- Length-Measuring Instruments Using Mechanical Means (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The present invention relates to a kind of threaded hole effective depth measuring devices, including measuring piece, the measuring piece includes the first measuring staff and the second measuring staff of cross-articulation, the lower end of first measuring staff is equipped with the first stylus being directed toward to the left, the lower end of second measuring staff is equipped with the second stylus being directed toward to the right, first stylus and second stylus are used to be meshed with the internal screw thread of threaded hole to be measured, the upper end of first measuring staff is equipped with pointer, it is the qualified measuring staff that left and right directions extends that the upper end of second measuring staff, which is equipped with length, it is described qualification measuring staff be equipped with for show threaded hole internal diameter to be measured whether He Ge qualified scale, the main scale scale that graduation mark is distributed along the vertical direction is additionally provided on second measuring staff.The problem that the time that above structure is able to solve the effective depth for measuring threaded hole in the prior art is long, tired degree is big.
Description
Technical field
The invention belongs to threaded hole detection technique fields, and in particular to a kind of threaded hole effective depth measuring device.
Background technique
It for the quality for guaranteeing workpiece, needs to detect the threaded hole on workpiece, the content of detection includes measurement screw thread
The effective depth in hole.Standard screw thread gauge is mostly used greatly at present to measure the effective depth of threaded hole, when measurement needs one to enclose
Ground is screwed into, and when taking-up also needs to screw out round and round.Although the effective of threaded hole can be accurately measured using standard screw thread gauge
Depth, but measurement process takes time and effort, under measurement efficiency is very low.Particularly with the work that threaded hole is more or threaded hole is deeper
Part, measurement difficulty are more protruded.
Summary of the invention
The present invention proposes a kind of threaded hole effective depth measuring device, with the effective depth of rapid survey threaded hole.
A kind of threaded hole effective depth measuring device of the present invention, including measuring piece, the measuring piece include intersecting
Hinged the first measuring staff and the second measuring staff, the lower end of first measuring staff are equipped with the first stylus being directed toward to the left, and described second surveys
The lower end of bar is equipped with the second stylus being directed toward to the right, and first stylus and second stylus are used to threaded hole to be measured
Internal screw thread is meshed, and the upper end of first measuring staff is equipped with pointer, and it is left and right directions that the upper end of second measuring staff, which is equipped with length,
The qualified measuring staff of extension, it is described qualification measuring staff be equipped with for show threaded hole internal diameter to be measured whether He Ge qualified scale, institute
It states and is additionally provided with the main scale scale that graduation mark is distributed along the vertical direction on the second measuring staff.
It further, further include a fixing piece, the fixing piece further includes the reading for being used to indicate the main scale scale
Portion, by being read on the reading main scale scale with graduation mark corresponding to the reading portion.
Further, the fixing piece includes the first position limiting structure moved forward and backward for limiting the measuring piece.
Further, first position limiting structure includes two word holes for passing through for the measuring piece, two institutes
Stating a word hole, upper and lower setting, the length in two word holes extend in left-right direction respectively, the preceding hole in two word holes
Wall is upper and lower concordant with rear hole wall.
Further, the fixing piece include length vertically extend tube-like piece, be located at the upper end of the tube-like piece
Upper cover and be located at the tube-like piece lower end lower cover, two word holes are respectively arranged on the upper cover and the lower cover
On, second measuring staff is equipped with support rod of the length along left and right to extension, is additionally provided with described in support upwards in the tube-like piece
The interior pressure spring of support rod.
Further, the fixing piece further includes the second position limiting structure to tilt for limiting the main scale scale.
Further, the fixing piece is equipped with for cooperating the vernier read, the trip with the main scale scale
Put on the vernier graduation for being equipped with and matching with the main scale scale.
Further, the right part of first stylus is hinged on first measuring staff, the left part hinge of second stylus
It connects on second measuring staff, first measuring staff is equipped with the first limit of the rotation angle for limiting first stylus
Portion, second measuring staff are equipped with the second limiting section for limiting the rotation angle of second stylus.
Further, power-assisted pressure spring is equipped between first measuring staff and second measuring staff.
Further, the finger-hole for protruding into for finger is equipped on first measuring staff and second measuring staff.
The beneficial effects of the present invention are, the effective depth of threaded hole is measured by above structure, the measurement used time is shorter,
It is suitably applied a large amount of threaded hole depth measurement work, efficiency is higher, and alleviating needs when traditionally measuring screw thread hole depth
Thread plug screws in threaded hole one by one and measures and bring working strength, and during confirming the validity depth, this dress
It sets and first passes through the diameter for confirming its threaded hole whether within acceptability limit, therefore the present apparatus can also measure spiral shell to be measured simultaneously
The diameter of pit.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of embodiment one；
Fig. 2 is the enlarged drawing in the portion A in Fig. 1；
Fig. 3 is the structural schematic diagram of the first measuring staff in embodiment one, pointer, the first stylus and finger-hole；
Fig. 4 is the structural schematic diagram of the second measuring staff in embodiment one, qualified measuring staff, the second stylus and finger-hole；
Fig. 5 is the AA sectional view of Fig. 4；
Fig. 6 is the structural schematic diagram of the fixing piece in embodiment one；
Fig. 7 is the structural schematic diagram of the tube-like piece in embodiment one；
Fig. 8 is the top view of Fig. 6；
Fig. 9 is the structural schematic diagram of the fixing piece in embodiment two；
Figure 10 is the enlarged drawing in the portion B in Fig. 9；
Figure 11 is the operation chart of embodiment one；
Figure 12 is the operation chart of embodiment two.
In figure: the 1-the first measuring staff, the 2-the second measuring staff, the 3-the first stylus, the 4-the second stylus, 5-pointers, 6-is qualified
Measuring staff, 7-qualified scales；8-main scale scales, 9-one word hole, 10-tube-like pieces, 11-upper covers, 12-support rods, 13-is interior
Pressure spring, 14-verniers, 15-power-assisted pressure springs, 16-finger-holes, 17-peepholes, 18-kidney slots, 19-limiting slots, 20-tubulars
Portion, 21-annular convex platform, 22-elastic pieces, 23-rebate, 24-strip protrusions, 25-tested threaded holes.
Specific embodiment
The invention will be further described with two specific embodiments with reference to the accompanying drawing.
Embodiment one:
A kind of threaded hole effective depth measuring device as shown in Figure 1, including measuring piece, measuring piece include cross-articulation
First measuring staff 1 and the second measuring staff 2, as shown in Fig. 2, the lower end of the first measuring staff 1 is equipped with the first stylus 3 being directed toward to the left, second is surveyed
The lower end of bar 2 is equipped with the second stylus 4 being directed toward to the right, and the first stylus 3 and the second stylus 4 are used to the interior spiral shell with threaded hole to be measured
Line is meshed, as shown in figure 3, the upper end of the first measuring staff 1 is equipped with pointer 5, as shown in figure 4, the upper end of the second measuring staff 2 is equipped with length
For left and right directions extend qualified measuring staff 6, qualified measuring staff 6 be equipped with for show threaded hole to be measured internal diameter whether He Ge conjunction
Lattice scale 7 is additionally provided with the main scale scale 8 that graduation mark is distributed along the vertical direction on second measuring staff 2.It should be noted that qualified survey
Bar 6 be equipped with for show threaded hole internal diameter to be measured whether He Ge qualified scale 7, i.e., when the internal diameter of threaded hole being measured is
When maximum allowable internal diameter, the pointer 5 of this measuring device should be directed toward the rightmost side graduation mark of qualified scale 7, and when measured
When the internal diameter of threaded hole is minimum allowable internal diameter, the pointer 5 of this measuring device should be directed toward the leftmost side scale of qualified scale 7
Line, and the qualification within Regional Representative's margin of tolerance between the rightmost side graduation mark and leftmost side graduation mark of qualified scale 7
Internal diameter.When measurement, the first stylus 3 and the second stylus 4 are protruded into threaded hole to be measured, make the first stylus 3 and the second stylus 4
It is engaged with threaded hole to be measured, certainly, this process includes one and finds accurately the stage, i.e. the first stylus 3 and the second stylus 4 are from spiral shell to be measured
After the first order screw thread alveolus engagement of the bottom hole of pit, see whether pointer 5 is located in the range of qualified scale 7, if it is not, then
First stylus 3 and the second stylus 4 are mentioned into supreme step of threads alveolus and are meshed, and so on, until pointer 5 is directed toward for the first time
Within the region of qualified scale 7, at this point, the distance in this grade of screw thread alveolus to the aperture of threaded hole to be measured is threaded hole to be measured
Effective depth.Reading when, for reduce error, should keep as far as possible the direction of main scale scale 8 extended up and down with it is to be measured
The axis of threaded hole is consistent, when reading, selects the position in the aperture of threaded hole to be measured as datum readings, i.e. the spiral shell to be measured
The scale of main scale scale 8 corresponding to the aperture of pit is the effective depth of threaded hole to be measured.In addition, preferably, first
The distance of the upward and downward of stylus 3 and the second stylus 4 is preferably the distance of 0.5 times of screw pitch, in order to the screw thread alveolus phase of internal screw thread
Engagement.
Preferably, further including a fixing piece, fixing piece further includes the reading portion for being used to indicate main scale scale 8, is led to
It crosses to read and be read on main scale scale 8 with graduation mark corresponding to reading portion.Because in the aperture for passing through threaded hole to be measured
When compared with main scale scale 8 to corresponding reading is carried out, human eye is difficult to flush with the aperture of threaded hole to be measured, so reading
Number often generates certain error, and by that will read standard, i.e. reading portion is located on the fixing piece other than measuring piece ontology, just
In observed reading.
Preferably, the fixing piece includes the first position limiting structure moved forward and backward for limiting the measuring piece.It is logical
The first position limiting structure of design is crossed for limiting moving in the front-back direction for measuring piece, reduces main scale scale 8 because in the front-back direction
Inclination causes certain error.
Preferably, the first position limiting structure includes two word holes 9 for passing through for measuring piece, two word holes 9
Upper and lower setting, the length in two word holes 9 extend in left-right direction respectively, and the preceding hole wall and rear hole wall in two word holes 9 are equal
It is upper and lower concordant.By designing a word hole 9, the first measuring staff 1 and the second measuring staff 2 are respectively positioned within a word hole 9, the front and back in a word hole 9
Width is equal with the overall thickness of the first measuring staff 1 and the second measuring staff 2, just defines the inclination in the front-back direction of main scale scale 8 in this way.
Preferably, as shown in Figure 6 and Figure 8, fixing piece include length vertically extend tube-like piece 10, be located at tubulose
The upper cover 11 of the upper end of part 10 and be located at tube-like piece 10 lower end lower cover, two word holes 9 be respectively arranged on upper cover 11 and under
It covers, the lower cover is for tube-like piece 10 to be supported on other than threaded hole to be measured.As shown in figure 4, the second measuring staff 2 is equipped with length edge
The support rod 12 to extension is controlled, the interior pressure spring 13 of support support rod 12 upwards is additionally provided in tube-like piece 10.It is supported by design
Bar 12 and interior pressure spring 13 can offset the self weight that a part thinks the operating force applied or measuring piece itself when measurement
Etc. external force, thus make measurement it is more accurate.
Preferably, fixing piece further includes the second position limiting structure to tilt for limiting main scale scale 8.Because
In measurement process, the inclination of left and right directions may occur for main scale scale 8 to influence measurement accuracy, pass through the second limit of design
Mechanism limits the inclination of 8 left and right directions of main scale scale, to reduce measurement error.Preferably, as shown in Figure 4 and Figure 5, the
It is in the strip protrusion 24 that up and down direction extends that two measuring staffs 2, which are additionally provided with a root long degree, and the strip protrusion 24 is from the second measuring staff 2
Surface outwardly protrudes, and the direction protruded deviates from the first measuring staff 1, and the second position limiting structure includes the strip protrusion 24, such as Fig. 8 institute
Show, the second position limiting structure further includes the avoid holes for being located at 9 side of word hole being equipped on upper cover 11 and lower lid.By this
Design, avoids the inclination of main scale scale 8 to the left or to the right, avoids measurement error.
Preferably, as shown in fig. 6, fixing piece, which is equipped with, cooperates the vernier 14 that is read for same main scale scale 8,
Vernier 14 is equipped with the vernier graduation to match with main scale scale 8.It is read, is obtained by setting vernier 14 and main scale scale 8
The reading arrived is more accurate.In the present embodiment, which is located on tube-like piece 10, and a peephole is provided on tube-like piece 10
17, the groove part of vernier 14 is corresponding with main scale scale 8 by peephole 17.Due in the process for manufacturing this measuring device
In, the upper and lower position of main scale scale 8 may generate certain downward shift, and cause systematic error, therefore in the present embodiment,
As shown in fig. 7, tube-like piece 10 is equipped with kidney slot 18, the length of kidney slot 18 is vertically extended, and vernier 14 is through bolt, spiral shell
Cap with kidney slot 18 cooperation and be fixed on tube-like piece 10.It when needing to adjust the height of vernier 14, loosers a bolt, by vernier 14
It is moved to fixed position, then tightens bolt, adjusts and completes.
Preferably, the right part of the first stylus 3 is hinged on the first measuring staff 1, the left part of the second stylus 4 is hinged on second
On measuring staff 2, the first measuring staff 1 is equipped with the first limiting section of the rotation angle for limiting the first stylus 3, sets on the second measuring staff 2
There is the second limiting section of the rotation angle for limiting the second stylus 4.In the present embodiment, first limiting section and the second limiting section
It is the limiting slot 19 that length extends in left-right direction, the lower part of the lower part of the first measuring staff 1 and the second measuring staff 2 is respectively equipped with one
The left part of a limiting slot 19, the right part of the first stylus 3 and the second stylus 4 is hinged in limiting slot 19.Because of threaded hole phase to be measured
There are certain legitimate skew, i.e. tolerance for the internal diameter of standard threaded aperture, if so the first stylus 3 and the second stylus 4 are fixed
On the first measuring staff 1 and the second measuring staff 2, the position of engagement of the first stylus 3 and the second stylus 4 and threaded hole to be measured will occur one
Fixed deviation, therefore, the first stylus 3 and the second stylus 4 can preferably carry out the rotation of certain angle.
Preferably, being equipped with power-assisted pressure spring 15 between the first measuring staff 1 and the second measuring staff 2.By the way that power-assisted pressure spring 15 is arranged,
After the first stylus 3 and the second stylus 4 are engaged with the internal screw thread of threaded hole to be measured, power assistant spring 15 steps up mesh degree more
It is close, so that reading is more accurate, measures more accurate.
Preferably, being equipped with the finger-hole 16 for protruding into for finger on the first measuring staff 1 and the second measuring staff 2.By setting
Finger-hole 16 is counted, manual operation is convenient for.
The embodiment of the present embodiment one is, as shown in figure 11, firstly, it is necessary to by the measuring device in embodiment one into
Row zeroing, is returned to zero by the comparison with standard component threaded hole, for example, the effective depth of standard component threaded hole is L, then,
It needs first to protrude into the first stylus 3 and the second stylus 4 in standard component threaded hole, it is made to be meshed with the screw thread alveolus of bottom hole, this
When obtained reading should be L, see whether the zero graduation line of vernier 14 aligns with the L graduation mark of main scale scale 8, if not
It is, by unclamping bolt, to adjust the high and low position of vernier 14, make the zero graduation line of vernier 14 and preside over the L groove pair of scale 8
Together, then can start to measure.Measuring process is, hand is protruded into finger-hole 16, internal pressure the first measuring staff 1 and the second measuring staff 2, by
One stylus 3 and the second stylus 4 protrude into the bottom hole of tested threaded hole 25, then unclamp finger-hole 16, make the first stylus 3 and the second stylus
4 are meshed with screw thread alveolus, within the scope of seeing whether pointer 5 is qualified scale 7, if not if, by the first stylus 3 and
Two styluses 4 are moved to outside the hole of standard threaded aperture, so that the first stylus 3 and the second stylus 4 is same as above step of threads alveolus and are meshed, because
For during threaded hole, the distance for allowing knife there are one, so the actual depth of threaded hole is greater than effective depth,
And the diameter of the bottom of the threaded hole after tapping is gradually increased from inside to outside, therefore, by the first stylus 3 and the second stylus 4
During gradually being engaged from inside to outside with screw thread alveolus at different levels, when pointer 5 is directed toward for the first time in the range of qualified scale 7,
Distance in screw thread alveolus to aperture is the effective distance of threaded hole at this, at this point, reading the quarter of main scale scale 8 and vernier 14
The reading of degree, the number reading method are identical with vernier caliper.
Embodiment two:
The present invention also provides embodiment two, the measuring piece of embodiment two is identical as the structure of embodiment one, and fixing piece
It is roughly the same, the difference is that the structure of fixing piece is different.As shown in Figure 9 and Figure 10, the reading portion of embodiment two is upper cover
11, and the vernier 14 in embodiment two only as read vernier reading component, i.e. the design of the graduation mark of main scale scale 8 should
It is adapted with upper cover 11.The reading of main scale scale 8 is gradually increased upwards by zero-bit, and preferably zero-bit graduation mark below is set
Set identical as the setting of graduation mark more than zero-bit, linear distance and groove length are identical at once.Reading and master when upper cover 11
When holding the zero graduation line of scale 8 and aligning, vernier 14 should be opposite with the zero-bit of main scale scale 8 arbitrary scale line below
Together, certainly, it preferably aligns with integer graduation mark, the principle designed in this way is, zero groove of script vernier 14 is regarded as
The reference line of main scale reading and vernier reading is read, but upper cover 11 is as the benchmark for reading main scale reading now, if in master
Scale 8 is held in the case where zero, the corresponding integer scale of zero groove of vernier 14, then being the equal of carving originally with main scale
The zero graduation line of the vernier 14 of 8 pair zero of degree translates downwards integer unit, without will cause deviation or error on reading.
In the present embodiment two, since main scale scale 8 can generate certain error in the fabrication process, not only vernier 14 is answered
Work as zeroing, and upper cover 11 should also be as that up and down adjustment can be carried out, to realize that zero-bit adjusts, the tune for the mode and embodiment one of returning to zero
Zero mode is roughly the same.Therefore, the tube-like piece 10 of embodiment two is equipped with the moving machine for moving up and down upper cover 11
Structure.A kind of embodiment realizing upper cover 11 and moving up and down is given in the present embodiment, as shown in figure 9, the embodiment be
A cylindrical part 20 is provided between upper cover 11 and tube-like piece 10, the outside on the top of tube-like piece 10 is equipped with accurate fine thread,
The inside of cylindrical part 20 is equipped with the internal screw thread matched with accurate fine thread, and upper cover 11 is located on cylindrical part 20, is needing
When upper cover 11 moves up and down, cylindrical part 20 can be rotated to realize, but the first measuring staff 1 should be kept during calibration
Static with the second measuring staff 2, because upper cover 11 is equipped with a word hole 9, therefore upper cover 11 should also be as remaining stationary, to solve this
Problem, in the present embodiment, the inside on the top of tube-like piece 10 is equipped with an annular convex platform 21, is equipped with below upper cover 11 along upper cover
The equally distributed several elastic pieces 22 of 11 circumferential direction, the elastic piece 22 at least two, elastic piece 22 extend from top to bottom and by
Axis gradually far from upper cover 11, until the elastic piece 22 extends under annular convex platform 21, elastic piece 22 and the annular convex platform 21
Interference fit, in order to facilitate the assembly of upper cover 11, the lower end of elastic piece 22 is additionally provided with one and extends and move closer to from top to bottom
The rebate 23 of the axis of upper cover 11.
The embodiment of the present embodiment two is roughly the same with the embodiment of embodiment one, but reading mode is not identical, such as
Shown in Figure 12, because the reading portion of the present embodiment two is upper cover 11, main scale scale 8 and the substantially aligned graduation mark of upper cover 11
It is read for main scale, and the vernier reading of vernier 14 is identical as the number reading method of vernier caliper.Main scale is read plus vernier reading
For the effective depth of the tested threaded hole 25 acquired.
In addition, no matter embodiments of the present invention are embodiment one or embodiment two, can acquire according to the present invention
The actual diameter for the screw thread alveolus of threaded hole to be measured being located at effective depth.Principle is, because the rightmost side of qualified scale 7 is carved
The region spent between line and leftmost side graduation mark is qualified region, can be according to practical tolerance value in the region of qualified scale 7
Shared proportionate relationship acquires the actual diameter of threaded hole to be measured, and formula is [A/B × N]+Dmin=D, and wherein A is pointer 5
Number of division from left to right, B are the maximum scale number of qualified scale 7, and N is the tolerance of threaded hole, and Dmin is in threaded hole minimum
Diameter.
The beneficial effects of the present invention are, the effective depth of threaded hole is measured by above structure, the measurement used time is shorter,
It is suitably applied a large amount of threaded hole depth measurement work, efficiency is higher, and alleviating needs when traditionally measuring screw thread hole depth
Thread plug is screwed in threaded hole one by one to measure and bring working strength, and during confirming the validity depth, this
Device first pass through confirm its threaded hole diameter whether within acceptability limit, therefore the present apparatus can also measure simultaneously it is to be measured
The diameter of threaded hole.
Finally, it is stated that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although referring to compared with
Invention is explained in detail for good embodiment, those skilled in the art should understand that, it can be to of the invention
Technical solution is modified or replaced equivalently, and without departing from the objective and range of technical solution of the present invention, should all be covered
In scope of the presently claimed invention.
Claims (5)
1. a kind of threaded hole effective depth measuring device, which is characterized in that including measuring piece, the measuring piece includes cross-articulation
The first measuring staff (1) and the second measuring staff (2), the lower end of first measuring staff (1) is equipped with the first stylus (3) being directed toward to the left, institute
The lower end for stating the second measuring staff (2) is equipped with the second stylus (4) being directed toward to the right, first stylus (3) and second stylus (4)
It is used to be meshed with the internal screw thread of threaded hole to be measured, the upper end of first measuring staff (1) is equipped with pointer (5), and described second surveys
It is the qualified measuring staff (6) that left and right directions extends that the upper end of bar (2), which is equipped with length, and the qualification measuring staff (6) is equipped with for showing
Threaded hole internal diameter to be measured whether He Ge qualified scale (7), be additionally provided with graduation mark on second measuring staff (2) and divide along the vertical direction
The main scale scale (8) of cloth；It further include a fixing piece, the fixing piece further includes the reading for being used to indicate the main scale scale (8)
Several portions, by being read on the reading main scale scale (8) with graduation mark corresponding to the reading portion；The fixing piece
It is equipped with for cooperating the vernier (14) read with the main scale scale (8), the vernier (14) is equipped with and the master
The vernier graduation that ruler scale (8) matches；The fixing piece includes the first limit moved forward and backward for limiting the measuring piece
Structure；First position limiting structure includes two word holes (9) for passing through for the measuring piece, two word holes
(9) upper and lower setting respectively, the length of two word holes (9) extends in left-right direction, before two word holes (9)
Hole wall is upper and lower concordant with rear hole wall；The fixing piece include length vertically extend tube-like piece (10), be located at the tubulose
The upper cover (11) of the upper end of part (10) and be located at the tube-like piece (10) lower end lower cover, two word holes (9) point
She Yu not be on the upper cover (11) and the lower lid, second measuring staff (2) is equipped with support rod of the length along left and right to extension
(12), the interior pressure spring (13) for supporting the support rod (12) upwards is additionally provided in the tube-like piece (10).
2. threaded hole effective depth measuring device according to claim 1, which is characterized in that the fixing piece further includes
The second position limiting structure to tilt for limiting the main scale scale (8).
3. threaded hole effective depth measuring device according to claim 1, which is characterized in that first stylus (3)
Right part be hinged on first measuring staff (1), the left part of second stylus (4) is hinged on second measuring staff (2), institute
The first measuring staff (1) is stated equipped with the first limiting section for limiting the rotation angle of first stylus (3), second measuring staff
(2) it is equipped with the second limiting section for limiting the rotation angle of second stylus (4).
4. threaded hole effective depth measuring device according to claim 1, which is characterized in that first measuring staff (1)
Power-assisted pressure spring (15) are equipped between second measuring staff (2).
5. threaded hole effective depth measuring device according to claim 1, which is characterized in that first measuring staff (1)
With the finger-hole (16) for protruding into for finger is equipped on second measuring staff (2).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711310384.7A CN108007319B (en) | 2017-12-11 | 2017-12-11 | A kind of threaded hole effective depth measuring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711310384.7A CN108007319B (en) | 2017-12-11 | 2017-12-11 | A kind of threaded hole effective depth measuring device |
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| CN108007319A CN108007319A (en) | 2018-05-08 |
| CN108007319B true CN108007319B (en) | 2019-11-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU226422U1 (en) * | 2023-12-26 | 2024-06-04 | Общество с ограниченной ответственностью "Челябинский тракторный завод - УРАЛТРАК" | PANEL TEMPLATE |
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| CN203224202U (en) * | 2013-05-13 | 2013-10-02 | 任国庆 | Visible direct-reading type caliper |
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| CN105571443A (en) * | 2016-03-07 | 2016-05-11 | 南京市宏伟屠宰机械制造有限公司 | Multifunctional caliper capable of realizing direct reading |
| CN107401962A (en) * | 2017-08-17 | 2017-11-28 | 沈阳富创精密设备有限公司 | A kind of depth of thread rule of replaceable gauge head and application method |
| CN207991429U (en) * | 2017-10-30 | 2018-10-19 | 江苏追日汽车同步器有限公司 | A kind of screw hole depth measuring device of convenient disassembly |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU226422U1 (en) * | 2023-12-26 | 2024-06-04 | Общество с ограниченной ответственностью "Челябинский тракторный завод - УРАЛТРАК" | PANEL TEMPLATE |
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