CN109307463A - A kind of cubing and method for examining special-shaped part length dimension - Google Patents
A kind of cubing and method for examining special-shaped part length dimension Download PDFInfo
- Publication number
- CN109307463A CN109307463A CN201811037387.2A CN201811037387A CN109307463A CN 109307463 A CN109307463 A CN 109307463A CN 201811037387 A CN201811037387 A CN 201811037387A CN 109307463 A CN109307463 A CN 109307463A
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- Prior art keywords
- datum level
- block
- cubing
- calibration block
- positioning
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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
- G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
Abstract
The invention discloses a kind of cubings and method for examining special-shaped part length dimension.The cubing includes bottom plate, locating piece, positioning mold insert, positioning column, side positioning block, detection block, dial indicator holder, dial gauge and calibration block；Locating piece, positioning column, side positioning block and detection block are arranged on bottom plate；It positions there are two mold inserts, is connected respectively with locating piece and detection block；Dial indicator holder is connected with detection block, dial gauge respectively；Calibration block includes beam and two arms being connected respectively with the beam of calibration block.Cubing includes datum level A, datum level B and datum level C.Cubing provided by the invention is suitable for the length dimension that high-volume examines peculiar part, can effectively improve the detection efficiency of part, the requirement to reviewer's ability is reduced, to reduce equipment cost and human cost.
Description
Technical field
The invention belongs to testing fixture design technical fields, and in particular to it is a kind of examine special-shaped part length dimension cubing and side
Method.
Background technique
In aviation foundry industry, the requirement of aviation part is very high, and many aviation parts require layout inspection, so
The time spent in detection needs very much, to increase many production costs and human cost, how to improve checkability and inspection
Precision is tested just into common demands in the industry.
In aviation foundry industry, the method that detection special-shaped part size generally uses is three-dimensional coordinates measurement, this measurement inspection
Precision height is tested, but to equipment, testing staff requires also high, while detecting that speed is slow, is unable to satisfy the detection of high-volume part
Efficiency.
Summary of the invention
It is an object of the invention to propose a kind of cubing that peculiar part length dimension is examined suitable for high-volume.
The present invention provides it is a kind of examine special-shaped part length dimension cubing, the part include beam and respectively with it is described
Two connected arms of the beam of part respectively include point e1, e2 on two arms of the part, and the distance between point e1, e2 are a,
Point e1, e2 to the vertical range between the lower surface of the beam of the part be b, which is characterized in that the cubing includes bottom plate, fixed
Position block, positioning mold insert, positioning column, side positioning block, detection block, dial indicator holder, dial gauge and calibration block；It is the locating piece, described
Positioning column, the side positioning block and the detection block are arranged on the bottom plate；There are two the positioning mold inserts, respectively with it is described
Locating piece is connected with the detection block, the lower surface for positioning mold insert to the vertical range between the upper surface of the positioning column
For b；The dial indicator holder is connected with the detection block, the dial gauge respectively；
The locating piece, the positioning mold insert, the side positioning block are used to fix the arm of the part, and the positioning column is used
In the beam for fixing and supporting the part, the detection block can be moved left and right, and the dial indicator holder is used to fix the dial gauge,
The calibration block is for calibrating the dial gauge；
The calibration block includes beam and two arms being connected respectively with the beam of the calibration block, two arms of the calibration block
On respectively include point f1, f2, the distance between point f1, f2 are a, between the lower surface of the beam of point f1, f2 to the calibration block
Vertical range is b, and the width of the calibration block is equal to the width of the part；
The cubing includes datum level A, datum level B and datum level C, the datum level A are the upper surface of the positioning column,
The datum level B is the right surface of the positioning mold insert, and the datum level C is the front surface of the side positioning block；The benchmark
Face B is mutually perpendicular to the datum level A, and the datum level C and datum level A, the datum level B are mutually perpendicular to.
In some embodiments of the invention, the calibration block includes datum level D, the lower surface of the beam of the calibration block with
The datum level D is mutually perpendicular to, and the inclined-plane of the arm of the calibration block is mutually perpendicular to the datum level D；When by the calibration block
When installation is into the cubing, the datum level D is coplanar with the datum level A.
In some embodiments of the invention, the roughness on the inclined-plane of the arm of the calibration block is 1.6.
In some embodiments of the invention, the positioning column, the side positioning block be high rigidity steel, hardness >=
HRC60。
In some embodiments of the invention, the positioning mold insert is hard alloy steel.
In some embodiments of the invention, the cubing further includes fixing seat and handle, the handle respectively with it is described
Fixing seat, the detection block are connected, and the fixing seat is also connected with the detection block, and the fixing seat is for fixing the hand
Handle.
In some embodiments of the invention, the lower surface of the positioning mold insert is between the upper surface of the positioning column
The tolerance of vertical range is ± 0.005.
In some embodiments of the invention, the datum level B and datum level A is mutually perpendicular to, and tolerance is+0.012；
The left surface of the detection block is mutually perpendicular to the datum level A, and tolerance is+0.012；The left surface of the detection block with it is described
Datum level B is parallel to each other, and tolerance is+0.012.
In some embodiments of the invention, the tolerance of the distance between point f1, f2 is ± 0.005, and point f1, f2 is to described
The tolerance of vertical range between the lower surface of the beam of calibration block is ± 0.005；The lower surface of the beam of the calibration block with it is described
Datum level D is mutually perpendicular to, and tolerance is+0.012；The inclined-plane of the arm of the calibration block is mutually perpendicular to the datum level D, and tolerance is
+0.012。
The present invention also provides a kind of methods for examining special-shaped part length dimension using aforementioned cubing, comprising steps of
The detection block is slided to the right, is put into the calibration block, and the lower surface of the beam of the calibration block is made to be adjacent to the base
Quasi- face A, the arm of the calibration block are adjacent to the datum level B, the datum level C respectively, then make the detection block reset；
The dial gauge zero is adjusted, the calibration block is taken out；
The detection block is slided, the part is put into, the lower surface of the beam of the part is made to be adjacent to the datum level A, institute
The arm for stating part is adjacent to the datum level B, the datum level C respectively, makes the detection block reset；
To the percentage meter reading, the fluctuation of the percentage list index is observed, if exceeding the tolerance of the part, is judged
The a off-dimension of the part, if pointer fluctuation sentences a size qualification of the part off zero in the margin of tolerance.
Cubing provided by the invention is suitable for the length dimension that high-volume examines peculiar part, can effectively improve part
Detection efficiency reduces the requirement to reviewer's ability, to reduce equipment cost and human cost.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of special-shaped part that the present invention to be detected.
Fig. 2 is the structural schematic diagram of one of embodiment of the present invention cubing.
Fig. 3 is the structural schematic diagram of calibration block shown in Fig. 2.
Fig. 4 is schematic diagram of the component assembly shown in FIG. 1 into cubing shown in Fig. 2.
Specific embodiment
Below in conjunction with drawings and examples, a specific embodiment of the invention is described in more details, so as to energy
The advantages of enough more fully understanding the solution of the present invention and its various aspects.However, specific embodiments described below and reality
It applies example to be for illustrative purposes only, rather than limiting the invention.
Fig. 1 show the special-shaped part of the invention to be detected, wherein (1) is main view, (2) are left view, and (3) are to bow
View.The part is made of beam 101 and arm 102, and there are two beams 101, is connected respectively with arm 102.Beam 101 shown in FIG. 1 is
Crossbeam.E1, e2 are the point being located on arm 102 in figure, and the distance between e1, e2 are a, for the length of the invention to be detected
Degree；E1, e2 to the vertical range between 101 lower surface of beam be b, arm 102 width (i.e. the longest of its arm front end to rear end away from
From) it is c.
In the prior art, whether qualified general measure tool can not detect a size, can only be measured, be taken with three coordinates
When it is laborious, cubing provided by the invention can be used to the such part of batch detection a size.
Fig. 2 show currently preferred cubing, wherein (1) is cross-sectional view along its longitudinal axis, (2) are left view, (3)
For top view, (4) are calibration block 211.As shown in Fig. 2, cubing provided by the invention includes: bottom plate 201, locating piece 202, positioning
Mold insert 203, positioning column 204, side positioning block 205, detection block 206, fixing seat 207, handle 208, dial indicator holder 209, dial gauge
210 and calibration block 211.
Wherein, locating piece 202, positioning column 204, side positioning block 205, detection block 206 are arranged on bottom plate 201, positioning edge
There are two parts 203, it is connected with locating piece 202, detection block 206 respectively, detection block 206 also respectively with fixing seat 207, handle
208 are connected with dial indicator holder 209, and fixing seat 207 is also connected with handle 208, and dial gauge 210 is connected with dial indicator holder 209.
Locating piece 202, positioning mold insert 203 and side positioning block 205 are used for the arm 102 of retaining element.Positioning column 204 is for branch
The beam 101 of support and retaining element.Detection block 206 can move left and right.Fixing seat 207 is used for fixed handle 208.208 convenience of handle
Operator moves detection block 206, it should be noted that may not include fixing seat and handle in other embodiments of the invention.
Dial indicator holder 209 is for fixing dial gauge 210.Calibration block 211 is for calibrating dial gauge 210.
As shown, locating piece 202 and positioning column 204 are plugged in bottom plate 201, it should be noted that of the invention
In other embodiments, locating piece 202 and positioning column 204 and bottom plate 201 can have other connection types, as long as can make locating piece
202 and positioning column 204 be fixed on bottom plate 201.There are two positioning columns 204 shown in Fig. 2.As shown in the figure, wherein handle
208 are plugged in detection block 206, are equipped with spring in dial indicator holder 209.
Lower surface to the vertical range between the upper surface of positioning column 204 for positioning mold insert 203 is that b (is equal to part arm 102
Upper e1, e2 are to the vertical range between 101 lower surface of beam), tolerance is ± 0.005.
As shown in Fig. 2, cubing of the invention includes three datum levels: datum level A, datum level B and datum level C.Datum level A
For the upper surface of positioning column 204, datum level B is the right surface for positioning mold insert 203, and datum level C is the preceding table of side positioning block 205
Face.Wherein, datum level B and datum level A is mutually perpendicular to, and tolerance is+0.012；Datum level C respectively with datum level A, datum level B phase
It is mutually vertical.As shown in Fig. 2, the left surface of detection block 206 is mutually perpendicular to datum level A, tolerance is+0.012；Detection block 206
Left surface is also parallel to each other with datum level B, and tolerance is+0.012.
Positioning mold insert 203, positioning column 204, side positioning block 205 play fixed, support, are vulnerable part.Positioning
Column 204, side positioning block 205 preferably use high rigidity steel, and hardness is best >=HRC60.Position the arm 102 of mold insert 203 and part
Sharp angular contact, preferably hard alloy steel, hardness is higher, to guarantee the normal service life of cubing.
Present invention preferably uses high-precision dial gauges as detection instrument, keeps testing result more acurrate.
Fig. 3 is the structural schematic diagram of calibration block 211 shown in Fig. 2 (4), wherein (1) it is main view, (2) are left view,
It (3) is right view.As shown in figure 3, calibration block 211 include beam 2111 and arm 2112, there are two arms 2112, respectively with 2111 phase of beam
Even.The arm 2112 of calibration block 211 is equipped with two o'clock f1, f2, the distance between point f1, f2 equal to point e1, e2 on part arm 102 it
Between distance a, tolerance be ± 0.005；Vertical range between 2111 lower surface point f1, f2 and beam is that b (is equal to part arm 102
Upper e1, e2 are to the vertical range between 101 lower surface of beam), tolerance is ± 0.005.Width (beam 2111, arm of calibration block 211
Vertical range between 2112 a front surface and a rear surface) it is c (equal to the width of part arm 102), tolerance is ± 0.005.
As shown in figure 3, calibration block 211 has a datum level D, it is the rear surface of calibration block 211.When calibration block 211 is pacified
When being filled in cubing, the datum level C of datum level D cubing is coplanar.The lower surface of beam 2111 is mutually perpendicular to datum level D, tolerance be+
0.012；Two inclined-planes (inclined-plane of beam 2111, arm 2112) of calibration block 211 are mutually perpendicular to datum level D, and tolerance is+0.012.
The lower surface of beam 2111, the roughness on two inclined-planes of calibration block 211 are preferably 1.6.It should be noted that Fig. 3
Shown 211 structure of calibration block is simple, facilitates processing, and beam 2111, arm 2112 are integrally formed, therefore beam 2111, arm 2112
Inclined-plane is coplanar, in other embodiments of the invention, when beam 2111, arm 2112 is non-coplanar or only arm 2112 has inclined-plane when, only
The roughness that need to guarantee arm 2112 is 1.6 and the inclined-plane and datum level D of arm 2112 are mutually perpendicular to.
Fig. 4 show part shown in FIG. 1 and installs schematic diagram in cubing shown in Fig. 2, wherein and it (1) is main view,
It (2) is top view.
When in use, firstly, stirring handle 208 to the right, detection block 206 is slided, calibration block 211 is put into, makes calibration block 211
The lower surface of beam 2111 be adjacent to the datum level A of cubing, the inclined-plane of the arm 2112 of calibration block 211 is adjacent to the datum level B of cubing, school
The datum level D of quasi- block 211 is adjacent to the datum level C of cubing, then release handle 208, resets detection block 206.Then, hundred are adjusted
Divide table 210, dial gauge 210 is made to be zeroed, take out calibration block 211, cubing is in detectable state at this time.Then, hand is stirred to the right
Handle 208, sliding detection block 206 are put into part, the lower surface of the beam 101 of part are made to be adjacent to the datum level A of cubing, the arm of part
102 are adjacent to the datum level B and datum level C of cubing respectively, and release handle 208 resets detection block 206.Finally, to dial gauge
210 readings, observation 210 pointer of dial gauge fluctuation judge the part off-dimension, if pointer if exceeding the tolerance of part
Fluctuation then judges the part size qualification in the margin of tolerance.
Cubing provided by the invention is suitable for the length dimension that high-volume examines peculiar part, can effectively improve part
Detection efficiency reduces the requirement to reviewer's ability, to reduce equipment cost and human cost.
It should be noted that cubing of the invention can be applied not only to detect part shown in FIG. 1, as long as similar includes
The part of arm and beam can be applied, and the case where if any multiple arms, the shape of arm is also not necessarily limited to shape shown in FIG. 1.E1, e2 can be with
It is any two points on two arms of part, as long as guaranteeing that it is equal to the vertical range between the lower surface of the beam of part, school
Point f1, f2 on two arms of quasi- block are adjusted according to e1, e2.It can also on the basis of the present invention, according to required
The requirement of the part of detection, is adjusted cubing, such as changes datum level or tolerance.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "top", " highest ", "vertical", "horizontal", "top", "bottom" "inner",
The orientation or positional relationship of the instructions such as "outside", " clockwise ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " is based on attached drawing institute
The orientation or positional relationship shown, is merely for convenience of description of the present invention and simplification of the description, rather than the dress of indication or suggestion meaning
It sets or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to limit of the invention
System.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.In the description of the present invention, the meaning of " plurality " is two or more,
Unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements.It for the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
In the present invention unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with
It is that the first and second features directly contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of
First feature horizontal height is higher than second feature.Fisrt feature can be under the second feature " below ", " below " and " below "
One feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be any
It can be combined in any suitable manner in a or multiple embodiment or examples.In addition, without conflicting with each other, the technology of this field
The feature of different embodiments or examples described in this specification and different embodiments or examples can be combined by personnel
And combination.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (10)
1. a kind of cubing for examining special-shaped part length dimension, the part include beam and are connected respectively with the beam of the part
Two arms, point e1, e2 are respectively included on two arms of the part, and the distance between point e1, e2 are a, point e1, e2 to described zero
Vertical range between the lower surface of the beam of part is b, which is characterized in that the cubing include bottom plate, locating piece, positioning mold insert,
Positioning column, side positioning block, detection block, dial indicator holder, dial gauge and calibration block；The locating piece, the positioning column, the side are fixed
Position block and the detection block are arranged on the bottom plate；There are two the positioning mold inserts, respectively with the locating piece and the inspection
It surveys block to be connected, lower surface to the vertical range between the upper surface of the positioning column of the positioning mold insert is b；The dial gauge
Seat is connected with the detection block, the dial gauge respectively；
The locating piece, the positioning mold insert, the side positioning block are used to fix the arm of the part, and the positioning column is for solid
Beam that is fixed and supporting the part, the detection block can move left and right, and the dial indicator holder is described for fixing the dial gauge
Calibration block is for calibrating the dial gauge；
The calibration block includes beam and two arms being connected respectively with the beam of the calibration block, on two arms of the calibration block point
Not Bao Kuo point f1, f2, the distance between point f1, f2 are a, vertical between the lower surface of the beam of point f1, f2 to the calibration block
Distance is b, and the width of the calibration block is equal to the width of the part；
The cubing includes datum level A, datum level B and datum level C, the datum level A are the upper surface of the positioning column, described
Datum level B is the right surface of the positioning mold insert, and the datum level C is the front surface of the side positioning block；The datum level B with
The datum level A is mutually perpendicular to, and the datum level C and datum level A, the datum level B are mutually perpendicular to.
2. cubing according to claim 1, which is characterized in that the calibration block includes datum level D, the beam of the calibration block
Lower surface be mutually perpendicular to the datum level D, the inclined-plane of the arm of the calibration block is mutually perpendicular to the datum level D；As general
When the calibration block is installed into the cubing, the datum level D is coplanar with the datum level A.
3. cubing according to claim 2, which is characterized in that the roughness on the inclined-plane of the arm of the calibration block is 1.6.
4. cubing according to claim 1, which is characterized in that the positioning column, the side positioning block are high rigidity steel,
Hardness >=HRC60.
5. cubing according to claim 1, which is characterized in that the positioning mold insert is hard alloy steel.
6. cubing according to claim 1, which is characterized in that the cubing further includes fixing seat and handle, the handle
It is connected respectively with the fixing seat, the detection block, the fixing seat is also connected with the detection block, and the fixing seat is for solid
The fixed handle.
7. cubing according to claim 1, which is characterized in that the lower surface of the positioning mold insert is upper to the positioning column
The tolerance of vertical range between surface is ± 0.005.
8. cubing according to claim 1, which is characterized in that the datum level B is mutually perpendicular to the datum level A, public
Difference is+0.012；The left surface of the detection block is mutually perpendicular to the datum level A, and tolerance is+0.012；The detection block
Left surface is parallel to each other with the datum level B, and tolerance is+0.012.
9. cubing according to claim 2, which is characterized in that the tolerance of the distance between point f1, f2 are ± 0.005, point
The tolerance of f1, f2 to the vertical range between the lower surface of the beam of the calibration block is ± 0.005；Under the beam of the calibration block
Surface is mutually perpendicular to the datum level D, and tolerance is+0.012；The inclined-plane of the arm of the calibration block and the datum level D are mutual
Vertically, tolerance is+0.012.
10. a kind of method for examining special-shaped part length dimension using the cubing any in claim 1-9, feature exist
In, comprising steps of
The detection block is slided to the right, is put into the calibration block, and the lower surface of the beam of the calibration block is made to be adjacent to the datum level
A, the arm of the calibration block are adjacent to the datum level B, the datum level C respectively, then make the detection block reset；
The dial gauge zero is adjusted, the calibration block is taken out；
The detection block is slided, the part is put into, the lower surface of the beam of the part is made to be adjacent to the datum level A, described zero
The arm of part is adjacent to the datum level B, the datum level C respectively, makes the detection block reset；
To the percentage meter reading, the fluctuation of the percentage list index is observed, if exceeding the tolerance of the part, described in judgement
The a off-dimension of part, if pointer fluctuation sentences a size qualification of the part off zero in the margin of tolerance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811037387.2A CN109307463A (en) | 2018-09-06 | 2018-09-06 | A kind of cubing and method for examining special-shaped part length dimension |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811037387.2A CN109307463A (en) | 2018-09-06 | 2018-09-06 | A kind of cubing and method for examining special-shaped part length dimension |
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| Publication Number | Publication Date |
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| CN109307463A true CN109307463A (en) | 2019-02-05 |
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ID=65224633
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811037387.2A Pending CN109307463A (en) | 2018-09-06 | 2018-09-06 | A kind of cubing and method for examining special-shaped part length dimension |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108278973A (en) * | 2018-04-28 | 2018-07-13 | 青岛海之晨工业装备有限公司 | A kind of mobile phone shell size detection equipment |
| CN113959307A (en) * | 2021-09-10 | 2022-01-21 | 江苏大学 | Parallelism detection tool based on envelope line and detection method thereof |
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| DE4308283A1 (en) * | 1992-03-17 | 1993-09-23 | Wuttig Praezision Gmbh & Co | Arrangement for measuring lengths or other size criteria of workpieces - contains fixed and movable measurement parts adjustably mounted on base and applied to workpiece by spring force |
| CN201589590U (en) * | 2010-01-05 | 2010-09-22 | 丰兴精密产业（惠州）有限公司 | Length detector for long shaft |
| CN204240906U (en) * | 2014-11-28 | 2015-04-01 | 葛洲坝集团试验检测有限公司 | Basic active piece lengths measurement mechanism |
| CN106705793A (en) * | 2016-12-14 | 2017-05-24 | 江门市力泰科技有限公司 | Length comprehensive measuring tool |
| CN107436120A (en) * | 2017-10-10 | 2017-12-05 | 株洲时代新材料科技股份有限公司 | A kind of flexible checking implement and method for being used to detect gauge apron side end face installation dimension |
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- 2018-09-06 CN CN201811037387.2A patent/CN109307463A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4308283A1 (en) * | 1992-03-17 | 1993-09-23 | Wuttig Praezision Gmbh & Co | Arrangement for measuring lengths or other size criteria of workpieces - contains fixed and movable measurement parts adjustably mounted on base and applied to workpiece by spring force |
| CN201589590U (en) * | 2010-01-05 | 2010-09-22 | 丰兴精密产业（惠州）有限公司 | Length detector for long shaft |
| CN204240906U (en) * | 2014-11-28 | 2015-04-01 | 葛洲坝集团试验检测有限公司 | Basic active piece lengths measurement mechanism |
| CN106705793A (en) * | 2016-12-14 | 2017-05-24 | 江门市力泰科技有限公司 | Length comprehensive measuring tool |
| CN107436120A (en) * | 2017-10-10 | 2017-12-05 | 株洲时代新材料科技股份有限公司 | A kind of flexible checking implement and method for being used to detect gauge apron side end face installation dimension |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108278973A (en) * | 2018-04-28 | 2018-07-13 | 青岛海之晨工业装备有限公司 | A kind of mobile phone shell size detection equipment |
| CN113959307A (en) * | 2021-09-10 | 2022-01-21 | 江苏大学 | Parallelism detection tool based on envelope line and detection method thereof |
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