CN206756116U - A kind of deep hole linear degree robot measurement based on PSD - Google Patents
A kind of deep hole linear degree robot measurement based on PSD Download PDFInfo
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- CN206756116U CN206756116U CN201720626098.0U CN201720626098U CN206756116U CN 206756116 U CN206756116 U CN 206756116U CN 201720626098 U CN201720626098 U CN 201720626098U CN 206756116 U CN206756116 U CN 206756116U
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Abstract
The utility model provides a kind of deep hole linear degree robot measurement based on PSD, including walking mechanism, deep hole make concentric mechanism, laser measuring head, photoelectric processing system and PSD position adjusting mechanisms by oneself；Deep hole, which makes concentric mechanism by oneself, includes sleeve, end cap, six roots of sensation support measurement bar, two conical round table, stage clip and centration axis；Walking mechanism is advanced for promoting deep hole to make concentric mechanism by oneself along deep hole；On the other end of laser measuring head installation centration axis；Photoelectric processing system is used for the laser signal for gathering laser measuring head, and PSD position adjusting mechanisms are used for the light receiving position for adjusting photoelectric processing system.The deep hole linear degree robot measurement realizes the Wedge shaped elastic supporting mechanism of a bi-directional symmetrical, realize the sliding support of support measurement boom end, and when supporting measurement bar radially play conical round table can be promoted to be slided along centration axis, adapt to the change in aperture, and the center line in hole and the centerline collineation of centration axis are remained, so as to adaptive capacity deep hole, the straight line degree measurement of blind hole.
Description
Technical field
It the utility model is related to automatic detection device, especially a kind of deep hole linear degree robot measurement based on PSD.
Background technology
All there is the deep hole that diameter differs in car, aircraft, steamer, oil equipment and large medical apparatus.This some holes class
The processing of part, detection technique directly affect part deep-hole parameters precision.And straight line degree measurement is in the geometry metrology of aperture
Elementary item, it is aperture circularity, the basis of coaxality measurement, is highly valued in production.
Deep hole linear degree error refers to bias of the actual axis in aperture to ideal axis.At present, traditional aperture straight line
Degree measuring method mainly has linearity feeler gauge, a calliper, armed lever method, and the methods of induction type foil gauge, this kind of amount method belongs to contact
Formula measures, and it operates inconvenience, and precision is difficult to ensure that artifical influence factor is very big.Moreover, for hole depth and diameter than more than 5
Deep hole or superdeep holes part, test are more inconvenient.And the scanning measurement method based on photovoltaic principals, the reversion survey using ultrasonic wave
Amount method, the aperture method of testing based on capacitance principle belong to the non-contact type measuring method in modern times, can automatically control, but can not survey
Measure deep hole, the linearity parameter of blind hole.
The content of the invention
The technical problems to be solved in the utility model be existing non-contact type measuring method can not measure deep hole, blind hole it is straight
Dimension parameter.
In order to solve the above-mentioned technical problem, the utility model provides a kind of deep hole linear degree measurement machine based on PSD
People, including walking mechanism, deep hole make concentric mechanism, laser measuring head, photoelectric processing system and PSD position adjusting mechanisms by oneself；It is deep
Concentric mechanism is made in hole, which by oneself, includes sleeve, end cap, six roots of sensation support measurement bar, two conical round table, stage clip and centration axis；End cap covers
At the port of sleeve；Centration axis axially penetrates through sleeve and end cap along sleeve；Two conical round table pass through the installation at center
Borehole jack is located in centration axis, and centering ball is provided with mounting hole；The cone bottom of two conical round table is relative, and stage clip is set in fixed
In mandrel and it is supported between the cone bottom of two conical round table；Three slide rails are equipped with the conical surface of two conical round table；Six
One end of root support measurement bar is slidably mounted on six slide rails respectively, and the other end is extended radially out outside sleeve along sleeve；
Spacing flange collar is equipped with centration axis and at sleeve inner bottom part and rubbing surface of end cover；One end pair of walking mechanism and centration axis
Connect, advanced for promoting deep hole to make concentric mechanism by oneself along deep hole；On the other end of laser measuring head installation centration axis；Photoelectric processing system
System is arranged on PSD position adjusting mechanisms, and photoelectric processing system is used for the laser signal for gathering laser measuring head, and PSD positions are adjusted
Section mechanism is used for the light receiving position for adjusting photoelectric processing system.
Demolition and maintenance can be facilitated using the setting of end cap and sleeve；Using two conical round table, stage clip and centration axis
The Wedge shaped elastic supporting mechanism for being designed to realize a bi-directional symmetrical, realize support measurement boom end sliding support, and
When supporting measurement bar radially play conical round table can be promoted to be slided along centration axis, adapt to the change in aperture, and protect all the time
Hold the center line in hole and the centerline collineation of centration axis；It can ensure that support measurement boom end is supported in hole all the time using stage clip
On wall, it is ensured that while stability, can also prevent bias；Deep hole can be controlled to make scheming by oneself using the rotating of stepper motor
The advance and retreat of structure, so as to adaptive capacity deep hole, the straight line degree measurement of blind hole.
As further limits scheme of the present utility model, support measurement bar is by supporting termination, fixed connecting rod, gusseted
Block and sliding block composition；Sliding block is buckled on slide rail, and can be slidably reciprocated along slide rail；Fixed connecting rod is fixedly installed on gusseted block
On, gusseted block is fixedly installed on sliding block；The threaded one end of termination is supported to be arranged on the end of fixed connecting rod, the other end
Provided with traveling ball.Using support termination and the detachable installation of fixed connecting rod, disclosure satisfy that the measurement of different pore size is changed needs
Ask, strengthen pervasive performance；The domatic conversion with fixed connecting rod radial direction of conical round table is realized using gusseted block.
As further limits scheme of the present utility model, walking mechanism includes swivel head and driving body；Swivel head is by revolving
Rotating cylinder and the hoofing part roller being arranged on rotating cylinder excircle for the screwdriven on inner walls of deep holes form；Driving body
It is used for by shell, stepper motor, motor drive module, power supply and being arranged on shell excircle along deep hole axial direction straight line moving
Directive wheel；Stepper motor, motor drive module and power supply may be contained within shell；The output shaft of stepper motor stretches out shell
It is outer to be arranged at the axle center of rotating cylinder；Power supply is respectively stepper motor and motor drive module power supply；Motor drive module drives
Dynamic stepper motor rotates.Motive force along rotating cylinder axial direction can be realized when rotating cylinder rotates using hoofing part roller；Adopt
It can ensure that shell will not follow rotation when rotating cylinder is walked vertically with directive wheel, and be easy to edge to walking, it is ensured that shell
Maintain at center.
As further limits scheme of the present utility model, three slide rails on the conical round table conical surface divide in 120 degree of intervals
Cloth.Ensure to accept on the conical round table conical surface uniformly using being spaced apart in 120 degree.
As further limits scheme of the present utility model, laser measuring head includes installation column cap and generating laser；Peace
One end of dress column cap is screwed in centration axis, and the other end is provided with installation jack；Generating laser is inserted on installation jack.Using
The inserting of generating laser and the screw thread replacing easy for installation for installing column cap.
As further limits scheme of the present utility model, PSD position adjusting mechanisms include bottom plate, translation plates, L shaped plate,
Backboard, X are to regulating bolt, Y-direction regulating bolt and Z-direction regulating bolt；X is provided with the bottom of translation plates to chute；In bottom plate
It is provided with and is embedded in Xs of the X into chute to fixed block；X is screwed in translation plates to regulating bolt along X to chute, and end rotates
Formula is arranged on X on fixed block；Y-direction chute is provided with the level board bottom of L shaped plate, is provided with translation plates and is embedded in Y-direction chute
Interior Y-direction fixed block；Y-direction regulating bolt is screwed on the level board of L shaped plate along Y-direction chute, and end is pivotally mounted at Y-direction
On fixed block；Z-direction chute is provided with the back side of backboard；The Z-direction being provided with the vertical plate of L shaped plate in Z-direction chute is fixed
Block；Z-direction regulating bolt is screwed on backboard along Z-direction chute, and end is pivotally mounted on Z-direction fixed block；Backboard is used to pacify
Fill the four-quadrant photo detector of photoelectric processing system.Using X to regulating bolt, Y-direction regulating bolt and Z-direction regulating bolt energy
Enough realize the position adjustments in three directions.
As further limits scheme of the present utility model, photoelectric processing system includes four-quadrant photo detector, data
Collector and computer；Data acquisition unit is connected between four-quadrant photo detector and computer, and four-quadrant photoelectricity is visited
The photoelectric signal collection for surveying device is transmitted to computer；Four-quadrant photo detector is arranged on PSD position adjusting mechanisms.
The beneficial effects of the utility model are：Demolition and maintenance can be facilitated using the setting of end cap and sleeve；Using two
The Wedge shaped elastic supporting mechanism for being designed to realize a bi-directional symmetrical of individual conical round table, stage clip and centration axis, realize branch
The sliding support of support measurement boom end, and when supporting measurement bar radially play conical round table can be promoted to be slided along centration axis
It is dynamic, the change in aperture is adapted to, and remain the center line in hole and the centerline collineation of centration axis；Can be true all the time using stage clip
Protect support measurement boom end to be supported on the inwall of hole, it is ensured that while stability, can also prevent bias；Using stepper motor
Rotating can control deep hole to make the advance and retreat of concentric mechanism by oneself, so as to adaptive capacity deep hole, the straight line degree measurement of blind hole.
Brief description of the drawings
Fig. 1 is mechanism structure schematic diagram in hole of the present utility model；
Fig. 2 is the outer mechanism structure schematic diagram of sky of the present utility model；
Fig. 3 is walking mechanism structural representation of the present utility model；
Fig. 4 is the self-centering mechanism structure schematic diagram of deep hole of the present utility model；
Fig. 5 is laser measuring head structural representation of the present utility model；
Fig. 6 is PSD position adjusting mechanisms structural representation of the present utility model；
Fig. 7 is photoelectric processing system structure diagram of the present utility model.
In figure:1st, walking mechanism, 2, deep hole make concentric mechanism by oneself, 3, laser measuring head, 4, photoelectric processing system, 5, PSD positions
Put governor motion, 6, hoofing part roller, 7, rotating cylinder, 8, stepper motor, 9, directive wheel, 10, power supply, 11, control line, 12,
Motor drive module, 13, sleeve, 14, end cap, 15, support termination, 16, gusseted block, 17, sliding block, 18, conical round table,
19th, slide rail, 20, fixed connecting rod, 21, centration axis, 22, stage clip, 23, centering ball, 24, installation column cap, 25, screwed hole, 26, swash
Optical transmitting set, 27, translation plates, 28, L shaped plate, 29, backboard, 30, Y-direction regulating bolt, 31, X to regulating bolt, 32, Z-direction regulation
Bolt, 33, four-quadrant photo detector, 34, data acquisition unit, 35, computer, 36, bottom plate.
Embodiment
As shown in figs. 1-7, the utility model discloses a kind of deep hole linear degree robot measurement based on PSD to include：OK
Enter mechanism 1, deep hole makes concentric mechanism 2 by oneself, laser measuring head 3, photoelectric processing system 4 and PSD position adjusting mechanisms 5.
Wherein, deep hole make by oneself concentric mechanism 2 include sleeve 13, end cap 14, the six roots of sensation support measurement bar, two conical round table 18,
Stage clip 22 and centration axis 21；End cap 14 is sealed at the port of sleeve 13；Centration axis 21 axially penetrates through sleeve along sleeve 13
13 and end cap 14；Two conical round table 18 are set in centration axis 21 by the mounting hole at center, and are provided with mounting hole
Centering ball 23；The cone bottom of two conical round table 18 is relative, and stage clip 22 is set in centration axis 21 and is supported in two taper circles
Between the cone bottom of platform 18；Three slide rails 19 are equipped with the conical surface of two conical round table 18；Three on the conical surface of conical round table 18
Bar slide rail 19 is spaced apart in 120 degree；One end of six roots of sensation support measurement bar is slidably mounted on six slide rails 19 respectively, another
Hold extending radially out outside sleeve 13 along sleeve 13；It is in centration axis 21 and equal at the inner bottom part of sleeve 13 and the medial surface of end cap 14
Provided with spacing flange collar；Walking mechanism 1 docks with one end of centration axis 21, is advanced for promoting deep hole to make concentric mechanism 2 by oneself along deep hole；
Laser measuring head 3 is installed on the other end of centration axis 21；Photoelectric processing system 4 is arranged on PSD position adjusting mechanisms 5, photoelectricity
Processing system 4 is used for the laser signal for gathering laser measuring head 3, and PSD position adjusting mechanisms 5 are used to adjust photoelectric processing system 4
Light receiving position.
As shown in figure 4, support measurement bar is by supporting termination 15, fixed 17 groups of connecting rod 20, gusseted block 16 and sliding block
Into；Sliding block 17 is buckled on slide rail 19, and can be slidably reciprocated along slide rail 19；Fixed connecting rod 20 is fixedly installed on gusseted block 16
On, gusseted block 16 is fixedly installed on sliding block 17；Fixed connecting rod 20 runs through sleeve 13, and is altered all the time along the radial direction of sleeve 13
It is dynamic；The threaded one end of termination 15 is supported to be arranged on the end of fixed connecting rod 20, the other end is provided with traveling ball.
As shown in figure 3, walking mechanism 1 includes swivel head and driving body；Swivel head is by rotating cylinder 7 and is arranged on rotating cylinder
It is used to the hoofing part roller 6 of screwdriven on inner walls of deep holes on 7 excircles form；Hoofing part roller 6 shares three,
Every being arranged on the excircle of rotating cylinder 7；The wheel shaft of hoofing part roller 6 is to the axial line with rotating cylinder 7 into 75 degree ~ 85 degree
Angle so that rotating cylinder 7 when rotated, the screwdriven on inner walls of deep holes of hoofing part roller 6, so as to which reaction is to rotating cylinder
7 form the thrust along the axial line of rotating cylinder 7；Driving body is by shell, stepper motor 8, motor drive module 12, power supply 10 and sets
Put the directive wheel 9 being used on shell excircle along deep hole axial direction straight line moving；Directive wheel 9 shares three, is arranged at intervals outside
On the excircle of shell；The wheel shaft of directive wheel 9 is to perpendicular with the axial line of shell, the axial line of shell and the axle center of rotating cylinder 7
Line is conllinear；Hoofing part roller 6 and directive wheel 9 are dismountable screw thread installation, and wheel face is respectively provided with certain elastic force；Step
Stepper motor 8, motor drive module 12 and power supply 10 may be contained within shell；The output shaft of stepper motor 8, which is stretched out outside shell, pacifies
At the axle center of rotating cylinder 7；Power supply 10 is respectively that stepper motor 8 and motor drive module 12 are powered；Motor drive module
12 are rotated by the Driving Stepping Motor 8 of control line 11.
As shown in figure 5, laser measuring head 3 includes installation column cap 24 and generating laser 26；One end of installation column cap 24 leads to
Cross screwed hole 25 to screw in centration axis 21, the other end is provided with installation jack；Generating laser 26 is inserted on installation jack；
As shown in fig. 6, PSD position adjusting mechanisms 5 include bottom plate 36, translation plates 27, L shaped plate 28, backboard 29, X to regulation
Bolt 31, Y-direction regulating bolt 30 and Z-direction regulating bolt 32；X is provided with the bottom of translation plates 27 to chute；On bottom plate 36
Provided with embedded in Xs of the X into chute to fixed block；X is screwed in translation plates 27 to regulating bolt 31 along X to chute, and end turns
Dynamic formula is arranged on X on fixed block；Y-direction chute is provided with the level board bottom of L shaped plate 28, is provided with translation plates 27 and is embedded in Y
Y-direction fixed block into chute；Y-direction regulating bolt 30 is screwed on the level board of L shaped plate 28 along Y-direction chute, and end rotates
Formula is arranged on Y-direction fixed block；Z-direction chute is provided with the back side of backboard 29；It is provided with the vertical plate of L shaped plate 28 and is embedded in Z-direction
Z-direction fixed block in chute；Z-direction regulating bolt 32 is screwed on backboard 29 along Z-direction chute, and end is pivotally mounted at Z-direction
On fixed block；The front of backboard 29 is used for the four-quadrant photo detector 33 for installing photoelectric processing system 4.
As shown in fig. 7, photoelectric processing system 4 includes four-quadrant photo detector 33, data acquisition unit 34 and computer
35；Data acquisition unit 34 is connected between four-quadrant photo detector 33 and computer 35, by four-quadrant photo detector 33
Photoelectric signal collection is transmitted to computer 35；Four-quadrant photo detector 33 is arranged on PSD position adjusting mechanisms 5, passes through meter
The photooptical data that the upper computer software installed on calculation machine 35 gathers to data acquisition unit 34 carries out data processing, so as to obtain luminous point
Real-time coordinates position, and carry out storage supply post analysis.
Deep hole linear degree robot measurement of the present utility model based on PSD when in use, first according to the aperture of deep hole
Suitable hoofing part roller 6, directive wheel 9, support termination 15 and generating laser 26 is rotated to be installed；Start to measure
When, the corresponding control of rotating is carried out by the Driving Stepping Motor 8 of motor drive module 12, such as needs to invert control for blind hole, makes
Generating laser 26 projects laser along aperture, be such as through hole, then rotate forward control or reversion control can be with；In varying aperture
When, promote two conical round table 18 to ensure bullet all the time in the presence of stage clip 22 to central compressed stage clip 22 from support measurement bar
Property support, and the axial line of deep hole is conllinear with the axial line of rotating cylinder 7；Adjust X to regulating bolt 31, Y-direction regulating bolt 30 with
And Z-direction regulating bolt 32 makes the luminous point of laser at the center of four-quadrant photo detector 33, due to deep hole in measurement process
The change of the linearity causes luminous point to move, and the optical signal of reception is passed through data acquisition unit 34 by four-quadrant photo detector 33 in real time
It is acquired, then the photooptical data that the upper computer software by being installed on computer 35 gathers to data acquisition unit 34 carries out data
Reason, so as to obtain the real-time coordinates position of luminous point, and carry out storage and supply post analysis.
Claims (7)
- A kind of 1. deep hole linear degree robot measurement based on PSD, it is characterised in that：Including walking mechanism（1）, deep hole it is self-centering Mechanism（2）, laser measuring head（3）, photoelectric processing system（4）And PSD position adjusting mechanisms（5）；Deep hole makes concentric mechanism by oneself（2） Including sleeve（13）, end cap（14）, the six roots of sensation support measurement bar, two conical round table（18）, stage clip（22）And centration axis（21）； End cap（14）It is sealed on sleeve（13）Port at；Centration axis（21）Along sleeve（13）Axially penetrate through sleeve（13）And end cap （14）；Two conical round table（18）Centration axis is set in by the mounting hole at center（21）On, and be provided with and determine in mounting hole Heart ball（23）；Two conical round table（18）Cone bottom it is relative, stage clip（22）It is set in centration axis（21）It is upper and be supported in two Conical round table（18）Cone bottom between；In two conical round table（18）The conical surface on be equipped with three slide rails（19）；The six roots of sensation supports One end of measurement bar is slidably mounted at six slide rails respectively（19）On, the other end is along sleeve（13）Extend radially out sleeve（13） Outside；In centration axis（21）Go up and be located at sleeve（13）Inner bottom part and end cap（14）Spacing flange collar is equipped with medial surface；Traveling machine Structure（1）With centration axis（21）One end docking, for promoting deep hole to make concentric mechanism by oneself（2）Advanced along deep hole；Laser measuring head（3） Centration axis is installed（21）The other end on；Photoelectric processing system（4）Installed in PSD position adjusting mechanisms（5）On, photoelectric processing system System（4）For gathering laser measuring head（3）Laser signal, PSD position adjusting mechanisms（5）For adjusting photoelectric processing system （4）Light receiving position.
- 2. the deep hole linear degree robot measurement according to claim 1 based on PSD, it is characterised in that：Support measurement bar By supporting termination（15）, fixed connecting rod（20）, gusseted block（16）And sliding block（17）Composition；Sliding block（17）It is buckled in slide rail （19）On, and can be along slide rail（19）Slidably reciprocate；Fixed connecting rod（20）It is fixedly installed on gusseted block（16）On, gusseted Block（16）It is fixedly installed on sliding block（17）On；Support termination（15）Threaded one end be arranged on fixed connecting rod（20）End on, The other end is provided with traveling ball.
- 3. the deep hole linear degree robot measurement according to claim 1 based on PSD, it is characterised in that：Walking mechanism（1） Including swivel head and driving body；Swivel head is by rotating cylinder（7）And it is arranged on rotating cylinder（7）It is used on excircle in inner walls of deep holes The hoofing part roller of upper screwdriven（6）Composition；Driving body is by shell, stepper motor（8）, motor drive module（12）, electricity Source（10）And it is arranged on the directive wheel being used on shell excircle along deep hole axial direction straight line moving（9）；Stepper motor（8）, electricity Machine drive module（12）And power supply（10）It may be contained within shell；Stepper motor（8）Output shaft stretch out shell outside be arranged on Rotating cylinder（7）Axle center at；Power supply（10）Respectively stepper motor（8）And motor drive module（12）Power supply；Motor drives Module（12）Driving Stepping Motor（8）Rotate.
- 4. the deep hole linear degree robot measurement according to claim 1 based on PSD, it is characterised in that：Conical round table （18）Three slide rails on the conical surface（19）It is spaced apart in 120 degree.
- 5. the deep hole linear degree robot measurement according to claim 1 based on PSD, it is characterised in that：Laser measuring head （3）Including installing column cap（24）And generating laser（26）；Column cap is installed（24）One end screw in centration axis（21）On, it is another End is provided with installation jack；Generating laser（26）It is inserted on installation jack.
- 6. the deep hole linear degree robot measurement according to claim 1 based on PSD, it is characterised in that：PSD position adjustments Mechanism（5）Including bottom plate（36）, translation plates（27）, L shaped plate（28）, backboard（29）, X is to regulating bolt（31）, Y-direction regulating bolt （30）And Z-direction regulating bolt（32）；In translation plates（27）Bottom be provided with X to chute；In bottom plate（36）Be provided with embedded in X to X in chute is to fixed block；X is to regulating bolt（31）Screwed along X to chute in translation plates（27）On, and end rotary type is installed In X on fixed block；In L shaped plate（28）Level board bottom be provided with Y-direction chute, in translation plates（27）It is provided with and is slided embedded in Y-direction Y-direction fixed block in groove；Y-direction regulating bolt（30）Screwed along Y-direction chute in L shaped plate（28）Level board on, and end rotate Formula is arranged on Y-direction fixed block；In backboard（29）The back side be provided with Z-direction chute；In L shaped plate（28）Vertical plate be provided be embedded in Z-direction fixed block in Z-direction chute；Z-direction regulating bolt（32）Screwed along Z-direction chute in backboard（29）On, and end rotary type is pacified On Z-direction fixed block；Backboard（29）For installing photoelectric processing system（4）Four-quadrant photo detector（33）.
- 7. the deep hole linear degree robot measurement according to claim 1 based on PSD, it is characterised in that：Photoelectric processing system System（4）Including four-quadrant photo detector（33）, data acquisition unit（34）And computer（35）；Data acquisition unit（34）Connection In four-quadrant photo detector（33）With computer（35）Between, by four-quadrant photo detector（33）Photoelectric signal collection pass Transport to computer（35）；Four-quadrant photo detector（33）Installed in PSD position adjusting mechanisms（5）On.
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| CN201720626098.0U CN206756116U (en) | 2017-06-01 | 2017-06-01 | A kind of deep hole linear degree robot measurement based on PSD |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106949856A (en) * | 2017-06-01 | 2017-07-14 | 南京信息职业技术学院 | A kind of deep hole linear degree robot measurement based on PSD |
| CN109269455A (en) * | 2018-09-19 | 2019-01-25 | 大连理工大学 | A kind of self-centering in-pipe robot of deep hole |
| CN109297437A (en) * | 2018-10-25 | 2019-02-01 | 南京工程学院 | One kind is based on the self-centering deep blind hole linearity measurer of PSD |
| CN113447004A (en) * | 2021-06-25 | 2021-09-28 | 中国人民解放军63653部队 | Pipeline measuring device |
-
2017
- 2017-06-01 CN CN201720626098.0U patent/CN206756116U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106949856A (en) * | 2017-06-01 | 2017-07-14 | 南京信息职业技术学院 | A kind of deep hole linear degree robot measurement based on PSD |
| CN109269455A (en) * | 2018-09-19 | 2019-01-25 | 大连理工大学 | A kind of self-centering in-pipe robot of deep hole |
| CN109297437A (en) * | 2018-10-25 | 2019-02-01 | 南京工程学院 | One kind is based on the self-centering deep blind hole linearity measurer of PSD |
| CN109297437B (en) * | 2018-10-25 | 2023-10-03 | 南京工程学院 | Deep blind hole straightness measuring device based on PSD self-centering |
| CN113447004A (en) * | 2021-06-25 | 2021-09-28 | 中国人民解放军63653部队 | Pipeline measuring device |
| CN113447004B (en) * | 2021-06-25 | 2023-03-14 | 中国人民解放军63653部队 | Pipeline measuring device |
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