CN207197418U - A kind of hole centre to end measurement apparatus of workpiece - Google Patents
A kind of hole centre to end measurement apparatus of workpiece Download PDFInfo
- Publication number
- CN207197418U CN207197418U CN201721143096.2U CN201721143096U CN207197418U CN 207197418 U CN207197418 U CN 207197418U CN 201721143096 U CN201721143096 U CN 201721143096U CN 207197418 U CN207197418 U CN 207197418U
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- measurement
- hole
- movable block
- workpiece
- ball
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Abstract
The utility model discloses a kind of hole centre to end measurement apparatus of workpiece, is related to mechanical measurement technique field.The device includes workbench and measurement assembly, and wherein workbench includes bottom plate, fixed block and dial framework, and bottom plate is used to place measured workpiece, and fixed block is fixed on bottom plate, and dial framework is fixed on fixed block, and amesdial is provided with dial framework；Measurement assembly includes movable block, flexure strip, measurement ball and amesdial, flexure strip one end is arranged on fixed block, the other end is arranged on movable block, the chaining pin of amesdial is positioned over the upper surface of movable block, measurement ball is fixed on the side of movable block, the diameter for measuring ball is more than or equal to the tested bore dia of measured workpiece, and movable block can in the vertical direction movement under the drive of measured workpiece.Which solves existing survey tool measure poor universality, measurement accuracy is low, and measuring speed is slow, it is high to operation experience degree of dependence the problem of, it is possible to achieve industrial mass detection needs.
Description
Technical field
It the utility model is related to mechanical measurement technique field, more particularly to a kind of hole centre to end measurement of workpiece
Device.
Background technology
The measurement between hole and horizontally or vertically basal plane, it is relative position measurement in mechanical workpieces processing and assembling process
An important parameter, assembling, processing for workpiece and using most important, though the error of very little also result in workpiece into
For waste product.Therefore whether the distance of detection workpiece hole center to end meets design requirement, is the day in workpiece process
Often work, while be also an important process.Moreover, in actual measurement process, it usually needs large quantities of parts are examined
Survey, therefore it is required that measurement operation is quick, simple, avoid the influence of human factor.
In the prior art, the distance of the hole center to end of parts of the measurement with circular hole feature mainly has following two
Method：First, using the method for indirect measurement distance, using slide measure as survey tool, survey tool, which is stuck in, to be needed to survey
On the parts of amount, the inwall in hole is obtained to the distance L of end face1, aperture D is then measured, then hole centre to end x=L1+
D/2.Although this measuring method can detect concrete numerical value, measurement accuracy is low, and measuring speed is slow, poor universality, and nothing
Method adapts to the needs of industrial mass detection.2nd, using the precision instrument in measuring room, the very strong three-dimensional coordinates measurement such as versatility
Machine, it can also complete to detect, but three coordinate measuring machine is cumbersome and complicated, it is high to operation experience degree of dependence, during detection
Between it is long, efficiency is low, nor a kind of reasonable and efficient method.
The content of the invention
A kind of hole centre to end measurement apparatus of workpiece provided by the utility model, can be solved in the prior art
Hole type parts measure poor universality, measurement accuracy is low, and measuring speed is slow, it is high to operation experience degree of dependence the problem of.
The utility model uses following technical scheme：A kind of instrument of the hole centre to end of workpiece, including：
Workbench, including bottom plate, fixed block and dial framework, bottom plate are used to place measured workpiece, and fixed block is fixed on bottom plate,
Dial framework is fixed on fixed block, and amesdial is provided with dial framework；
Measurement assembly, including movable block, flexure strip, measurement ball and amesdial, flexure strip one end are arranged on fixed block, separately
One end is arranged on movable block, and the chaining pin of amesdial is positioned over the upper surface of movable block, and measurement ball is fixed on the side of movable block,
The diameter for measuring ball is more than or equal to the tested bore dia of measured workpiece, and movable block can be in vertical direction under the drive of measured workpiece
Upper movement.
Preferably, being provided with positioning spiro pit on bottom plate, bolt coordinates with positioning spiro pit, in the vertical direction
Bottom plate is passed through from bottom to top, and bolt upper end overhead is on movable block lower surface, for adjusting movable block in the vertical direction
Position.The setting of said structure so that the initial position of movable block is adjustable, increases the measurement range of device, improves dress
The versatility put.
Preferably, being provided with amesdial mounting hole on dial framework, the axle sleeve of amesdial is arranged in amesdial mounting hole, is surveyed
Pin overhead is on the upper surface of movable block.The setting of said structure so that the numeral that amesdial is shown is movable block in vertical side
Upward displacement variable.
Preferably, being provided with measurement ball installation screwed hole on movable block, measurement ball is provided with mounting hole, and mounting hole is with surveying
Measure ball installation screwed hole to coordinate, be fastened by bolts, measurement ball is fixed on movable block.The setting of said structure so that survey
The axis for measuring the measurement ball installation screwed hole that the axis of ball and movable block are set overlaps, therefore in measurement process, measured workpiece
The axis of upper measured hole overlaps with measurement ball, can ensure that the measurement ball that the tested axially bored line of measured workpiece and movable block are set is pacified
The axis for filling screwed hole overlaps, and ensure that the accuracy of measurement.
Preferably, measurement flat board is fixed on bottom plate, the tested end face of measured workpiece is placed on measurement flat board, is used for
Adjust the position of measured workpiece in the vertical direction.The setting of said structure so that the higher measurement flat board of precision being capable of conduct
Reference plane, improve measurement accuracy, it is necessary to measurement distance be measured workpiece measured hole to measure flat board distance, simultaneously
Different measurement flat boards can be selected according to the actual height of workpiece, the position of measured workpiece in the vertical direction can be adjusted,
Improve the versatility of device.
Preferably, the measured hole of measured workpiece is circular hole or mounting hole, the diameter of ball and the diameter of circular hole or waist are measured
The distance of the parallel lines of shape hole two is adapted.The setting of said structure so that the structure type of measured workpiece is more various, the survey of device
The versatility of amount is stronger.
Preferably, the diameter of measurement ball is bigger 0.1mm~0.3mm than the diameter of circular hole on measured workpiece, or measurement ball
Diameter is bigger 0.1mm~0.3mm than the distance of two parallel lines of mounting hole on measured workpiece.The setting of said structure so that measurement
The selection of gauge ball lattice is determined by the diameter of measured hole on measured workpiece, in actual measurement process, according to different hole and end face
Design size, select the measurement ball of different size to be installed with movable block, not only increase the accuracy of measurement, increase simultaneously
The big scope of measurement.
Preferably, flexure strip is arranged with two panels in parallel in the horizontal direction.The setting of said structure so that movable block can
On a relatively small displacement, vertically move, the structure type that flexure strip vertically be arranged in parallel, relatively
In using structure types such as slide rail and guide rails, more stable, more economical practicality is implemented, reliability is higher.
Preferably, the upper surface and lower surface of movable block all be arranged in parallel with bottom plate, the upper surface of movable block and thousand points
The chaining pin of table is vertically arranged.The setting of said structure so that the in the vertical direction motion of measurement ball is driven by measured workpiece, and then
The motion of movable block in the vertical direction is driven, while the motion of movable block in the vertical direction can accurately pass to amesdial table
Head, the finger clockwise on amesdial dial plate rotate, the vertically moving displacement of display measurement ball.
Preferably, the bottom of bottom plate is additionally provided with four footing, for support baseboard, so that the work of the measurement apparatus
Make more steady reliable.
A kind of hole centre to end measurement apparatus of workpiece provided by the utility model, can solve to realize to large quantities of
Measure quick, the accurate measurement of workpiece, and measurement accuracy is low, can according to the original state of the design size adjusting means of workpiece,
It is simple to operate to meet the requirement of versatility, it is low to operation experience degree of dependence.
Brief description of the drawings
Fig. 1 is the shaft side figure of the hole centre to end measurement apparatus of workpiece provided by the utility model.
Fig. 2 is the partial sectional view of the hole centre to end measurement apparatus of workpiece provided by the utility model.
Fig. 3 is the first measured workpiece schematic diagram provided by the utility model.
Fig. 4 is second of measured workpiece schematic diagram provided by the utility model.
In figure：1st, workbench；11st, footing；12nd, bottom plate；121st, positioning spiro pit；13rd, fixed block；14th, dial framework；141、
Amesdial mounting hole；15th, flat board is measured；
2nd, measurement assembly；21st, bolt；22nd, movable block；221st, ball installation screwed hole is measured；222nd, upper surface；223、
Lower surface；23rd, flexure strip；24th, ball is measured；241st, end face；242nd, mounting hole；25th, amesdial；251st, dial plate；252nd, axle sleeve；
253rd, chaining pin；
3rd, measured workpiece；31st, it is tested end face；32nd, measured hole.
Embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples.It is understood that herein
Described specific embodiment is used only for explaining the utility model, rather than to restriction of the present utility model.Further need exist for
It is bright, for the ease of description, the part related to the utility model rather than entire infrastructure are illustrate only in accompanying drawing.
Further illustrate the technical solution of the utility model below in conjunction with the accompanying drawings and by embodiment.
If Fig. 3 is the schematic diagram that measured hole 32 on measured workpiece 3 is circular hole, Fig. 4 is the measured hole 32 on measured workpiece 3
For the schematic diagram of mounting hole, the distance that the utility model patent needs to measure arrives for the center line of measured hole 32 on measured workpiece 3
The distance x of the distance of tested end face 31, i.e. circular hole or mounting hole to tested end face 31.The tested end face 31 of measured workpiece 3 is put
Put measurement flat board 15 on, the distance to be tested be the measured hole 32 of measured workpiece 3 center line to measure flat board 15 away from
From.
Measurement apparatus of the present utility model is mainly made up of three parts, respectively workbench 1, measurement assembly 2, and by
Workpiece 3 is surveyed, its shaft side figure is as shown in figure 1, partial sectional view is as shown in Figure 2.Wherein, the vertical direction described in full text be perpendicular to
The direction of bottom plate 12, the horizontal direction described in full text are the direction parallel to bottom plate 12.
Workbench 1 is made up of footing 11, bottom plate 12, fixed block 13, dial framework 14 and measurement flat board 15, and wherein footing 11 is excellent
Elect 4 as, for support baseboard 12, fixed block 13 and dial framework 14 are fixed by screws on bottom plate 12, and measurement flat board 15 passes through
Screw is fixed on bottom plate 12, and to ensure that the top surface for measuring flat board 15 is parallel with bottom plate all the time.
Measurement assembly is made up of bolt 21, movable block 22, flexure strip 23, measurement ball 24 and amesdial 25.Its
In, flexure strip 23 is arranged with two panels in parallel in the horizontal direction, and one end of flexure strip 23 is fixed on fixed block 13, and the other end is fixed
On movable block 22, the flexure strip 23 be arrangeding in parallel can ensure parallel shifting of the movable block 22 on a relatively small displacement
It is dynamic, more stable, more economical practicality is implemented relative to using structure type, flexure strips 23 such as slide rail and guide rails, reliability is more
It is high.
Amesdial mounting hole 141 is provided with dial framework 14, the axle sleeve 252 of amesdial is arranged in amesdial mounting hole 141,
The overhead of chaining pin 253 is on the upper surface 222 of movable block 22.When the in the vertical direction of movable block 22 moves, what amesdial was shown
Numeral is the displacement variable of the in the vertical direction of movable block 22.
Positioning spiro pit 121 is provided with bottom plate 12, bolt 21 coordinates with positioning spiro pit 121, in vertical direction
On pass through bottom plate 12 from bottom to top, the upper end overhead of bolt 21 on the lower surface of movable block 22, regulation bolt 21 stretch
Go out the length of bottom plate 12, with regard to the initial position on vertical position of movable block 22 can be adjusted so that the initial position of movable block 22 can
Adjust, increase the measurement range of device, improve the versatility of device.
Measurement ball installation screwed hole 221 is provided with movable block 22, measures and is provided with mounting hole 242, mounting hole on ball 24
242 coordinate with measurement ball installation screwed hole 221, are fastened by bolts, just measurement ball 24 can be fixed on movable block 22.Now
The measurement ball installation axis of screwed hole 221 that the axis of ball 24 and movable block 22 are set is measured to overlap, in measurement process, due to
The axis of measured hole 32 of measured workpiece 3 overlaps with measuring the axis of ball 24, therefore can ensure the measured hole of measured workpiece 3
The axis for the measurement ball installation screwed hole 221 that 32 axis are set with movable block 22 overlaps.Simultaneously as the upper surface of movable block 22
222 and lower surface 223 all be arranged in parallel with bottom plate 12, the upper surface 222 of movable block 22 and the chaining pin 253 of amesdial are vertically set
Put, i.e., can ensure the displacement of the measurement in the vertical direction of ball 24 caused by measured workpiece 3, be existed exactly by movable block 22
Movement on vertical direction passes to amesdial 25, and the displacement of measurement ball 24 is shown by amesdial dial plate 251, ensure that measurement
Accuracy.
It is that can carry out selection according to the design size of different holes and end face to measure ball 24, and the selection of specification is by being tested
The diameter of measured hole 32 determines on workpiece, and the diameter of measurement ball 24 is bigger 0.1mm~0.3mm than the diameter of circular hole on measured workpiece 3,
Or the diameter of measurement ball 24 is bigger 0.1mm~0.3mm than the distance of two parallel lines of mounting hole on measured workpiece 3.In actual measurement
During, according to the design size in different holes and end face, the measurement ball 24 of different size is selected, is pacified with movable block 22
Dress, not only increases the accuracy of measurement, while increase the scope of measurement.
The parts of industrial mass manufacture, sorted out according to measured hole 32 to the design size value of tested end face 31, this
A kind of hole centre to end measurement apparatus for workpiece that utility model patent provides can have same design chi to a collection of
Very little parts are quick and precisely measured, and specific work process is as follows：
Step 1: the preparation before measurement
The design load of tested end face 31 is arrived according to the measured hole 32 of measured workpiece 3, to a kind of work provided by the utility model
The hole centre to end measurement apparatus of part enters the adjustment of line home position, mainly includes：
1st, the selection of ball 24 is measured
The diameter that the diameter of measurement ball 24 is equal to measured hole 32 on measured workpiece adds 0.1mm~0.3mm, according to tested work
The design load of the diameter of measured hole 32 on part, choose the suitable measurement specification of ball 24.Mounting hole 242 is provided with measurement ball 24, will
Mounting hole 242 coordinates with the measurement ball installation screwed hole 221 on movable block 22, is fastened by screw, completes measurement ball 24 in work
Installation on motion block 22.
2nd, the selection of flat board 15 is measured
Measurement flat board 15 is fixed by screws on bottom plate, the design chi of the measurement center line of ball 24 to the upper surface of measurement plate 15
Very little is to calculate the center line of measured hole 32 to the important parameter for the distance for being tested end face 31.In actual mechanical process, it is ensured that
The center line of ball 24 is measured to the design size of the upper surface of measurement plate 15, less than or equal to the center line of measured hole 32 on measured workpiece 3
To the distance of tested end face 31.When the measurement center line of ball 24 is more than or equal to measured workpiece to the design size of the upper surface of measurement plate 15
On 3 the center line of measured hole 32 to tested end face 31 apart from when, the tested work can not be measured by illustrating the measurement apparatus of this specification
Part 3.The measurement flat board 15 of different height can be now changed, with the adjustment measurement center line of ball 24 to measurement flat board 15 upper surface
Design size, it may be necessary to measurement flat board 15 need not be set, directly measured workpiece 3 is placed on bottom plate 12.
3rd, the regulation of the initial position of movable block 22
Have a collection of measured workpiece 3 need measurement when, choose a workpiece, polished and accurately measured, make its into
For it is standard-sized can be as the workpiece of canonical measure.The initial position on vertical position of movable block 22 is adjusted, using this
The workpiece of standard, place it on measurement flat board 15, regulation bolt 21 stretches out the length of bottom plate 12, adjusts movable block
22 on vertical position initial position, and then to amesdial 25 show digital zero setting.
Step 2: measurement process
The measured hole 32 for the measured workpiece 3 being placed in measurement plate 15 is held out against on the end face 241 of measurement ball 24, by
In measurement ball 24 diameter be more than or equal to measured workpiece 3 on measured hole 32 diameter, now, measure ball 24 end face 241 with
Measured hole 32 on measured workpiece 3 is interference fitted the center line of measured hole 32 and measurement ball that together, ensure that on measured workpiece 3
24 center line overlaps.Because the measurement center line of ball 24 is less than or equal to measured workpiece 3 to the design size of the upper surface of measurement plate 15
The center line of upper measured hole 32 is to the distance of tested end face 31, and measured hole 32 is by interference fit by measurement ball 24 in vertical direction
On lift, and then the displacement on vertical direction is passed into movable block 22, the overhead of chaining pin 253 of amesdial is in movable block 22
On upper surface 222, therefore the numerical value of displacement can be shown by the dial plate 251 of amesdial.
Step 3: the reading and calculating of measurement result
If on standard workpiece the center line in hole to the design size of end face be x', the number that amesdial dial plate 251 is shown
Value size is △ x, and the numerical value of center line to the distance of tested end face 31 of measured hole 32 is x, therefore the numerical relation between three
For：X=x'+ △ x.
When the center line of measured hole 32 meets measured workpiece 3 to the numerical value x of distance and the difference of design load of tested end face 31
During design tolerance requirement, the workpiece size meets design requirement；Conversely, when measured hole 32 center line to tested end face 31 away from
From numerical value x and the difference of design load be unsatisfactory for 3 design tolerance requirement of measured workpiece when, the workpiece size is substandard products, does not meet and sets
Meter requires.
In a kind of actual application of the hole centre to end measurement apparatus of workpiece provided by the utility model,
The time of measuring of average each workpiece was at five seconds or so, and measurement accuracy is very high, solved in the prior art that measurement accuracy is low,
Measuring speed is slow, it is high to operation experience degree of dependence the problem of, it is possible to achieve industrial mass detection needs.
Especially, in the measurement process to same batch measured workpiece 3, it is possible that the numerical value that amesdial 25 is shown
It is larger, close to the situation of the measurement range maximum of amesdial.When measuring every time, the indicators turn on amesdial dial plate 251
Angle will be close to 360 °, and such case all has a significant impact to the life-span of amesdial 25 and measurement accuracy.In this case,
The method that the utility model uses is regulation bolt 21 stretches out the length of bottom plate 12, and then heightens movable block 22 vertical
Initial position on position so that the initial number that amesdial 25 is shown is some numerical value, rather than thousand described in step 1
The initial number for dividing table 25 to show is zero.Now because the initial position of movable block 22 is raised, measurement ball 24 and measured hole 32
Interference fit causes the displacement variable of movable block 22 accordingly to reduce, therefore when measuring every time, the finger on amesdial dial plate 251
Pin rotational angle accordingly reduces, and then improves life-span and the measurement accuracy of amesdial 25, while does not influence the meter of measurement result
Calculate, i.e. the measured value x of the center line of measured hole 32 to the distance of tested end face 31, still equal to the center in hole on standard workpiece
The numerical values recited that line is shown to design size x' and the amesdial dial plate 251 of end face is △ x sums.Adjust bolt
21 adjustment effect to whole measurement apparatus with measuring flat board 15, substantially increase the versatility of measurement apparatus.
Pay attention to, above are only preferred embodiment of the present utility model and institute's application technology principle.Those skilled in the art's meeting
Understand, the utility model is not limited to specific embodiment described here, can carried out for a person skilled in the art various bright
Aobvious change, readjust and substitute without departing from the scope of protection of the utility model.Therefore, although passing through above example
The utility model is described in further detail, but the utility model is not limited only to above example, is not departing from
In the case that the utility model is conceived, other more equivalent embodiments can also be included, and the scope of the utility model is by appended
Right determine.
Claims (10)
- A kind of 1. hole centre to end measurement apparatus of workpiece, it is characterised in that including：Workbench (1), including bottom plate (12), fixed block (13) and dial framework (14), the bottom plate (12) are used to place measured workpiece (3), the fixed block (13) is fixed on the bottom plate (12), and the dial framework (14) is fixed on the fixed block (13), institute State and amesdial (25) is installed on dial framework (14)；Measurement assembly (2), including movable block (22), flexure strip (23), measurement ball (24) and the amesdial (25), the elasticity Piece (23) one end is arranged on the fixed block (13), and the other end is arranged on the movable block (22), the amesdial (25) Chaining pin (253) be positioned over the upper surfaces (222) of the movable block (22), the measurement ball (24) is fixed on the movable block (22) side, the diameter of the measurement ball (24) are more than or equal to measured hole (32) diameter of the measured workpiece (3), the work Motion block (22) can be moved vertically under the drive of measured workpiece (3).
- 2. the hole centre to end measurement apparatus of workpiece according to claim 1, it is characterised in that the bottom plate (12) positioning spiro pit (121) is provided with, bolt (21), the positioning are installed in the positioning spiro pit (121) Bolt (21) upper end overhead is on the movable block (22) lower surface (223), for adjusting the movable block (22) in vertical side Upward position.
- 3. the hole centre to end measurement apparatus of workpiece according to claim 1, it is characterised in that the dial framework (14) amesdial mounting hole (141) is provided with, the axle sleeve (252) of the amesdial (25) is arranged on amesdial mounting hole (141) in.
- 4. the hole centre to end measurement apparatus of workpiece according to claim 1, it is characterised in that the movable block (22) measurement ball installation screwed hole (221) is provided with, is provided with mounting hole (242) in measurement ball (24), mounting hole (242) with Measure ball installation screwed hole (221) to coordinate, be fastened by bolts, the measurement ball (24) is fixed on the movable block (22) On.
- 5. the hole centre to end measurement apparatus of workpiece according to claim 1, it is characterised in that also include measurement Flat board (15), the measurement flat board (15) are fixed on the bottom plate (12), and the tested end face (31) of the measured workpiece (3) is put Put on measurement flat board (15), for adjusting the position of measured workpiece (3) in the vertical direction.
- 6. the hole centre to end measurement apparatus of the workpiece according to claim any one of 1-5, it is characterised in that institute The measured hole (32) for stating measured workpiece (3) is circular hole or mounting hole, and the diameter of the measurement ball (24) is more than or equal to the circular hole Diameter or the parallel lines of the mounting hole two distance.
- 7. centre to end measurement apparatus in hole according to claim 6, it is characterised in that the measurement ball (24) Diameter is bigger 0.1mm~0.3mm than the diameter of circular hole on measured workpiece (3), or the diameter of the measurement ball (24) compares measured workpiece (3) the big 0.1mm~0.3mm of distance of two parallel lines of mounting hole on.
- 8. the hole centre to end measurement apparatus of workpiece according to claim 7, it is characterised in that the flexure strip (23) it is arranged with two panels in parallel in the horizontal direction.
- 9. the hole centre to end measurement apparatus of workpiece according to claim 8, it is characterised in that the movable block (22) upper surface (222) and lower surface (223) all be arranged in parallel with the bottom plate (12), the upper surface of the movable block (22) (222) it is vertically arranged with the chaining pin (253) of the amesdial (25).
- 10. the hole centre to end measurement apparatus of workpiece according to claim 9, it is characterised in that the bottom plate (12) bottom is additionally provided with four footing (11), for supporting the bottom plate (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721143096.2U CN207197418U (en) | 2017-09-07 | 2017-09-07 | A kind of hole centre to end measurement apparatus of workpiece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721143096.2U CN207197418U (en) | 2017-09-07 | 2017-09-07 | A kind of hole centre to end measurement apparatus of workpiece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207197418U true CN207197418U (en) | 2018-04-06 |
Family
ID=61791433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721143096.2U Expired - Fee Related CN207197418U (en) | 2017-09-07 | 2017-09-07 | A kind of hole centre to end measurement apparatus of workpiece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207197418U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108731580A (en) * | 2018-05-29 | 2018-11-02 | 成都爱乐达航空制造股份有限公司 | Circular diameter method for fast measuring in the multilayer of aero-engine casing part |
| CN114136170A (en) * | 2021-11-01 | 2022-03-04 | 中国船舶重工集团公司第七0七研究所 | Tool and method for detecting shaft hole in support beam of gyroscope frame |
-
2017
- 2017-09-07 CN CN201721143096.2U patent/CN207197418U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108731580A (en) * | 2018-05-29 | 2018-11-02 | 成都爱乐达航空制造股份有限公司 | Circular diameter method for fast measuring in the multilayer of aero-engine casing part |
| CN114136170A (en) * | 2021-11-01 | 2022-03-04 | 中国船舶重工集团公司第七0七研究所 | Tool and method for detecting shaft hole in support beam of gyroscope frame |
| CN114136170B (en) * | 2021-11-01 | 2023-04-28 | 中国船舶重工集团公司第七0七研究所 | Axle hole detection tool and method for gyroscope frame support beam |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180406 Termination date: 20200907 |
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| CF01 | Termination of patent right due to non-payment of annual fee |