CN209416236U - A kind of gas formula inner diameter gauge for the detection of equal diameter deep hole - Google Patents
A kind of gas formula inner diameter gauge for the detection of equal diameter deep hole Download PDFInfo
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- CN209416236U CN209416236U CN201821688941.9U CN201821688941U CN209416236U CN 209416236 U CN209416236 U CN 209416236U CN 201821688941 U CN201821688941 U CN 201821688941U CN 209416236 U CN209416236 U CN 209416236U
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Abstract
The utility model discloses a kind of gas formula inner diameter gauges for the detection of equal diameter deep hole, including parallel connection type positioning and clamp system, adaptive measuring and indication mechanism, measurement position regulating and controlling mechanism and system controller.By system controller control parallel connection type positioning and clamp system, the automatic positioning and clamping between Full-automatic inside diameter measurer and measured workpiece are realized；In parallel connection type positioning under clamp system support, system controller controls measurement position regulating and controlling mechanism, drives adaptive measuring and indication mechanism row to the position to be measured of measured workpiece equal diameter deep hole internal diameter；Finally by adaptive measuring and indication mechanism complete that the internal diameter of measured workpiece equal diameter deep hole position to be measured is measured and shown.The Full-automatic inside diameter measurer of the utility model fast implements positioning and clamping using parallel institution, easy to operate with the Qi Shi adaptive measuring mechanism of high sensitivity, simple and easy, can significantly improve the efficiency and precision of the detection of equal diameter deep hole internal diameter.
Description
Technical field
The utility model discloses a kind of gas formula inner diameter gauge, in particular to a kind of gas formula for the detection of equal diameter deep hole
Inner diameter gauge belongs to deep hole detection instrument technical field.
Background technique
The products such as modern aircraft, steamer, large-scale precision instrument are used for as large-scale, super spare parts are more and more extensive, this
It is also higher and higher greater than the requirement of 5 deep hole or the automation measurer of superdeep holes part to hole depth and aperture ratio.Based on slide calliper rule, card
Traditional bore diameter measuring method artifical influence factor of rule is big, such as detection positioning, thus for deep hole/superdeep holes inner diameter measurement
There are some dedicated measuring tools, but existing deep hole internal diameter measurer is prevalent in and measured workpiece is not easy positioning asks
Topic, and the sensitivity of detection unit needs to be further increased.
Summary of the invention
Technical problem to be solved in the utility model is existing longhole survey tool mentioned in the background art
The problems such as that there are measurement process is cumbersome, the degree of automation is low and the sensitivity of detection unit is not high and provide it is a kind of for etc.
The gas formula inner diameter gauge of diameter deep hole detection.
To solve the above problems, technical solution adopted in the utility model is:
A kind of gas formula inner diameter gauge for the detection of equal diameter deep hole, it is characterised in that: the measurer includes parallel connection type positioning
With clamp system, adaptive measuring and indication mechanism, measurement position regulating and controlling mechanism and system controller.
The parallel connection type positioning and clamp system include fixed platform, moving platform, connecting rod one, connecting rod two, radial slider, gas
Cylinder；One end that the fixed platform is contacted with measured workpiece is equipped with tapered positioning surface, and fixed platform center is provided with through-hole one, through-hole one
Surrounding is evenly distributed with two guide holes one；The moving platform is located remotely from the other end of the tapered positioning surface of fixed platform, fixed platform and dynamic
Cylinder is set between platform, and cylinder shell is fixed on fixed platform end face, and cylinder piston rod is connected with moving platform, moving platform and fixed
Circumferentially it is provided with the radial groove of trisection on the adjacent end face of platform, moving platform center is provided with through-hole two, around through-hole two
Two guide holes two of cloth；Three groups of linkage rod slide block mechanisms, every group of linkage rod slide block mechanism are equipped between the fixed platform and moving platform
Including connecting rod one, connecting rod two and radial slider；Described one one end of connecting rod is fixed in the outer circle of fixed platform trisection；Described
Connecting rod two is in asymmetrical V-type, and two one end of connecting rod is connected with the radial slider in moving platform radial groove with cylindrical hinge, connecting rod
Two middle parts are also connected with connecting rod one with cylindrical hinge.
The adaptive measuring and indication mechanism includes cylinder barrel, tapered piston, left cylinder lid, right cylinder lid, pressure spring, hollow work
Stopper rod, T-type sleeve, measuring head base, gauge head, dial bore gage, mounting bracket；The cylinder barrel is provided with tapered piston, cylinder barrel
Attaching left cylinder lid and right cylinder lid are distinguished in left and right end face, radially open up the radial direction of one group of trisection in the middle part of cylinder barrel on a certain cross section
Through-hole；The tapered of the tapered piston faces the right side, is provided with the cunning of trisection on the tapered face of tapered piston along its bus method
Slot, each sliding slot are provided with a measuring head base, and measuring head base passes through radial through-hole on sleeve, connects a gauge head；The pressure spring
It is mounted between tapered piston and right cylinder lid；The hollow piston rod left end coaxially passes through tapered piston, and hollow piston rod is right
End is equipped with a sealing cantilever, seals and offers air inlet on cantilever；T-type sleeve is sleeved on hollow piston rod, and T-type sleeve is left
End is connected with right cylinder lid；Sliding bearing one, hollow piston rod right end are respectively arranged between hollow piston rod and right cylinder lid and T-type sleeve
Stretch out T-type sleeve outside, T-type sleeve right end connect annular support plate, the sealing cantilever of annular support plate and hollow piston rod it
Between by mounting bracket install dial bore gage, dial bore gage gauge head with seal cantilever be connected.
The measurement position regulating and controlling mechanism includes driving motor, electric machine support, gear, rack gear, sleeve, annular brace
Disk, guide rod, sliding bearing two；Driving motor is mounted on fixed platform on the end face of moving platform by electric machine support；Gear peace
In driving motor output shaft；Sleeve is sleeved on T-type sleeve by the sliding bearing two at both ends, and rack gear is mounted on sleeve
On, and be meshed with gear；The one end of sleeve far from fixed platform is connect through sliding bearing three with annular support plate；Annular support plate
It is evenly distributed two guide rods；Guide rod is slidably disposed through moving platform and fixed platform；
The T-type sleeve of adaptive measuring and indication mechanism is sheathed in the sleeve of measurement position regulating and controlling mechanism, and internal diameter hundred
Table, mounting bracket and annular support plate is divided to stretch out outside sleeve, parallel connection type positioning passes through the through-hole one of fixed platform with clamp system, moves
The through-hole two of platform is sheathed on the sleeve of measurement position regulating and controlling mechanism；
The system controller is electrical connected with driving motor, cylinder.
As a preferred embodiment, the quantity of the cylinder is 3, and every cylinder is located at some circle on fixed platform end face
Trisection at.
The cone angle of the fixed platform taper positioning surface is designed according to 2 orifice chamfer of measured workpiece.
The hollow piston rod left end is coaxially connected with tapered piston；It is equipped with and slides between the tapered piston and cylinder barrel
Dynamic seal ring (not shown).
Sliding bearing one is respectively arranged between the hollow piston rod and right cylinder lid and T-type sleeve.
The measuring head base and the close one end of tapered piston is equipped with a rotatable straight pin, and straight pin can be along cone
The sliding of shape piston sliding slot；The gauge head is used with measuring head base and is threadedly coupled, and adjustable distance is 1~3mm between the two.
The pressure spring is in compressive state when measurer does not work, and pressure spring elastic force moves to left tapered piston, drives and surveys
Headstock and gauge head are in retracted mode.
Sliding bearing three is equipped between the annular support plate and elongate sleeve.
The beneficial effects of the utility model are:
1, the gas formula inner diameter gauge for being used for the detection of equal diameter deep hole realizes positioning and folder using parallel connection type mechanism simultaneously
Tightly, both it had been conducive to auxiliary internal diameter measurement, and had also simplified the composed structure of measurer.
2, the gas formula inner diameter gauge for being used for the detection of equal diameter deep hole is made full use of using the automatic measurement mechanism of gas formula
The mutability of pressed gas volume and the sensitivity of reaction, advantageously ensure that the detection accuracy of deep hole internal diameter, are also conducive to avoid drawing
Hurt workpiece surface.
3, gas formula inner diameter gauge for being used for the detection of equal diameter deep hole, using automatic clamping positioning mechanism in parallel and measurement
Position adjusting mechanism simplifies measurer operation, improves measurement efficiency.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the utility model；
Fig. 2 is the parallel connection type positioning and clamp system illustraton of model of the utility model；
Fig. 3 is the adaptive measuring and indication mechanism cross-sectional view of the utility model；
Fig. 4 is the measurement position regulating and controlling mechanism schematic diagram of the utility model；
Fig. 5 is the case study on implementation schematic diagram of the utility model.
Specific embodiment
To keep the content of the utility model more obvious and easy to understand, specific embodiment is done further below in conjunction with attached drawing
Description.
As shown in Figure 1, it is a kind of for equal diameter deep hole detection gas formula inner diameter gauge, the measurer include parallel connection type positioning with
Clamp system 1000, adaptive measuring and indication mechanism 2000, measurement position regulating and controlling mechanism 3000 and system controller.
As shown in Fig. 2, parallel connection type positioning includes fixed platform 1001, moving platform 1002, connecting rod one with clamp system 1000
1003, connecting rod 2 1004, radial slider 1005, cylinder 1006；One end that fixed platform 1001 is contacted with measured workpiece 2 is equipped with tapered
The cone angle of positioning surface, tapered positioning surface is designed according to 2 orifice chamfer of measured workpiece, and 1001 center of fixed platform is provided with through-hole one,
Guide hole one there are two axially being opened up on fixed platform end face around through-hole one；Moving platform 1002 is located remotely from the cone of fixed platform 1001
The other end of shape positioning surface, the radial direction that trisection is circumferentially provided on the end face adjacent with fixed platform 1001 of moving platform 1002 are sliding
Slot, 1002 center of moving platform are provided with through-hole two, are axially opened up on the moving platform end face around through-hole two there are two guide hole two；It is fixed
Between platform 1001 and moving platform 1002 be equipped with three groups of linkage rod slide block mechanisms, every group of linkage rod slide block mechanism include connecting rod 1,
Connecting rod 2 1004 and radial slider 1005；One 1003 one end of connecting rod is fixed in the outer circle of 1001 trisection of fixed platform；Connecting rod two
1004 be in asymmetrical V-type, and 2 1004 one end of connecting rod is cut with scissors with the radial slider 1005 in 1002 radial groove of moving platform with cylinder
Chain is connected, and 2 1004 middle part of connecting rod is also connected with connecting rod 1 with cylindrical hinge；1006 shell of cylinder is fixed on fixed platform
On 1001 end faces, 1006 piston rod of cylinder is connected with moving platform 1002, and the quantity of cylinder 1006 is 3, every 1006, cylinder
At the trisection that some is justified on 1001 end face of fixed platform.
As shown in figure 3, adaptive measuring and indication mechanism 2000 include cylinder barrel 2001, tapered piston 2002, left cylinder lid
2003, right cylinder lid 2004, pressure spring 2007, hollow piston rod 2008, T-type sleeve 2009, measuring head base 2005, gauge head 2006, internal diameter
Dial gauge 2010, mounting bracket 2011；Cylinder barrel 2001 is provided with tapered piston 2002, and attaching is distinguished in the left and right end face of cylinder barrel 2001
Left cylinder lid 2003 and right cylinder lid 2004, the radial direction that one group of trisection is radially opened up on a certain cross section in the middle part of cylinder barrel 2001 are logical
Hole；Tapered piston 2002 between cylinder barrel 2001 equipped with sliding ring (not shown) tapered faces the right side, tapered piston 2002
The sliding slot of trisection is provided on tapered face along its bus method, each sliding slot is provided with a measuring head base 2005, with tapered piston
2002 close 2005 one end of measuring head base are equipped with a rotatable straight pin, and straight pin can be sliding along 2002 sliding slot of tapered piston
Dynamic, 2005 other end of measuring head base passes through radial through-hole on sleeve, using being threadedly coupled a gauge head 2006, and gauge head 2006 with
Adjustable distance is 1~3mm between measuring head base 2005；Pressure spring 2007 is mounted between tapered piston and right cylinder lid 2004,
Pressure spring is in compressive state when measurer does not work, and measuring head base 2005 and gauge head 2006 are in retracted mode, and the bullet of pressure spring 2007
Power moves to left tapered piston 2002, and measuring head base 2005 and gauge head 2006 is driven to stretch out the radial through-hole on sleeve；With tapered piston
2002 2008 left ends of hollow piston rod being coaxially connected coaxially pass through tapered piston 2002, and 2008 right end of hollow piston rod is equipped with one
A sealing cantilever seals and offers air inlet on cantilever；T-type sleeve 2009 is sleeved on hollow piston rod 2008, T jacket cylinder
2009 left ends and right cylinder lid 2004 are connected；Cunning is respectively arranged between hollow piston rod 2008 and right cylinder lid 2004 and T-type sleeve 2009
Dynamic bearing 1,2008 right end of hollow piston rod stretch out outside T-type sleeve, and T-type sleeve right end connects annular support plate 3006,
Dial bore gage 2010, internal diameter are installed by mounting bracket 2011 between annular support plate and the sealing cantilever of hollow piston rod
2010 gauge head of dial gauge is connected with sealing cantilever.
As shown in figure 4, measurement position regulating and controlling mechanism 3000 include driving motor 3001, electric machine support 3002, gear 3003,
Rack gear 3004, sleeve 3005, annular support plate 3006, guide rod 3007, sliding bearing 2 3008；Driving motor 3001 passes through motor
Bracket 3002 is mounted on fixed platform 1001 on the end face of moving platform；Gear 3003 is mounted on 3001 output shaft of driving motor
On；Sleeve 3005 is sleeved on T-type sleeve by the sliding bearing 2 3008 at both ends, and rack gear 3004 is mounted on sleeve 3005,
And it is meshed with gear 3003；The one end of sleeve 3005 far from fixed platform 1001 connects through sliding bearing three and annular support plate 3006
It connects；Annular support plate 3006 is evenly distributed two guide rods 3007；Guide rod 3007 is slidably disposed through moving platform 1002 and allocates
Platform 1001.
System controller is taken and is electrical connected with driving motor 3001,1006 reversing control valve of cylinder.
A kind of course of work of the gas formula inner diameter gauge for the detection of equal diameter deep hole is as follows:
1) prepare before measurement, suitable gauge head 2006 selected according to the size of measured workpiece equal diameter deep hole internal diameter first,
It is connected with measuring head base 2005；By the air inlet of 2008 right end of hollow piston rod, mentioned to 2002 left end type chamber of tapered piston
For pressure；By internal diameter ring standard gauge and pressure spring 2007, the staking-out work of the measurer is completed, records calibration value, adjusts internal diameter hundred
Divide 2010 zero-bit of table.
2) when measuring, as shown in figure 5, realizing gas formula by system controller control parallel connection type positioning and clamp system 1000
Automatic positioning and clamping between inner diameter gauge 1 and measured workpiece 2；In the case where parallel connection type positioning is supported with clamp system 1000, it is
Controller of uniting controls measurement position regulating and controlling mechanism 3000, drives adaptive measuring and 2000 row of indication mechanism to measured workpiece 2 etc.
The position to be measured of diameter deep hole internal diameter；It is finally completed by adaptive measuring and indication mechanism 2000 deep to 2 equal diameter of measured workpiece
The internal diameter of hole position to be measured measures and display, specific implementation step are as follows:
A) parallel connection type positioning and the fixed platform 1001 of clamp system 1000 are placed on 2 deep hole hole end surface of measured workpiece, together
Tri- cylinders 1006 of Shi Qidong drive three connecting rods 1 by moving platform 1002, radial slider 1005 and connecting rod 2 1004
The outer surface for clamping measured workpiece 2, completes the positioning and clamping of the gas formula inner diameter gauge 1 and measured workpiece 2；
B) under the support of parallel connection type positioning and clamping mechanism 1000, start driving motor 3001, pass through pinion gear 3003, tooth
Item 3004, elongate sleeve 3005, shape support plate 3006, guide rod 3007 and sliding bearing 2 3008 drive adaptive measuring and show
Show the operation of mechanism 2000 to the position to be measured of 2 deep hole internal diameter of measured workpiece；
C) 2002 left end type cavity gas pressure of tapered piston and pressure spring 2007 elastic force and three gauge heads 2006 by hole
Under the active force of wall, tapered piston 2002 can be generated in cylinder barrel 2001 and be horizontally slipped accordingly, since tapered piston 2002 is bored
The cone angle in shape face is 45 °, and tapered piston 2002 is the variable quantity of the unilateral radius in aperture to be measured along axial displacement, in
Empty piston rod 2008, by tapered piston 2002 in axial displacement reflection to dial bore gage 2010, readout value, in conjunction with
Calibration value calculates current location internal diameter.
If the hole internal diameter on same section at different location d) need to be measured, it is only necessary to which 2009 right end of turning T-type sleeve makes three
Gauge head 2006 generates rotation in the case where tapered piston 2002 and measuring head base 2005 are constrained in current cross-section；If different interfaces need to be measured
On deep hole internal diameter, driving motor 3001 need to be started, by pinion gear 3003, rack gear 3004, elongate sleeve 3005, driven adaptive
It should measure and the operation of indication mechanism 2000 to the locating section of corresponding internal diameter to be measured.
The foregoing is merely the utility model relates to one of gas formula inner diameter gauge for the detection of equal diameter deep hole compared with
Good case study on implementation, but the scope of the utility model is not limited thereto example.
Claims (7)
1. it is a kind of for equal diameter deep hole detection gas formula inner diameter gauge, it is characterised in that: the measurer include parallel connection type positioning with
Clamp system, adaptive measuring and indication mechanism, measurement position regulating and controlling mechanism and system controller；
The parallel connection type positioning and clamp system include fixed platform, moving platform, connecting rod one, connecting rod two, radial slider, cylinder；
One end that the fixed platform is contacted with measured workpiece is equipped with tapered positioning surface, and fixed platform center is provided with through-hole one, and through-hole one week
Enclose uniformly distributed two guide holes one；The moving platform is located remotely from the other end of the tapered positioning surface of fixed platform, and fixed platform is put down with dynamic
Cylinder is set between platform, cylinder shell is fixed on fixed platform end face, and cylinder piston rod is connected with moving platform, moving platform with allocate
The radial groove of trisection is circumferentially provided on the adjacent end face of platform, moving platform center is provided with through-hole two, is evenly distributed with around through-hole two
Two guide holes two；Three groups of linkage rod slide block mechanisms, every group of linkage rod slide block mechanism packet are equipped between the fixed platform and moving platform
Include connecting rod one, connecting rod two and radial slider；Described one one end of connecting rod is fixed in the outer circle of fixed platform trisection；The company
Bar two is in asymmetrical V-type, and two one end of connecting rod is connected with the radial slider in moving platform radial groove with cylindrical hinge, connecting rod two
Middle part is also connected with connecting rod one with cylindrical hinge；
The adaptive measuring and indication mechanism includes cylinder barrel, tapered piston, left cylinder lid, right cylinder lid, pressure spring, hollow piston
Bar, T-type sleeve, measuring head base, gauge head, dial bore gage, mounting bracket；The cylinder barrel is provided with tapered piston, a left side for cylinder barrel
Attaching left cylinder lid and right cylinder lid are distinguished in right side, and the radial direction for radially opening up one group of trisection in the middle part of cylinder barrel on a certain cross section is logical
Hole；The tapered of the tapered piston faces the right side, is provided with the sliding slot of trisection on the tapered face of tapered piston along its bus method,
Each sliding slot is provided with a measuring head base, and measuring head base passes through radial through-hole on sleeve, connects a gauge head；The pressure spring installation
Between tapered piston and right cylinder lid；The hollow piston rod left end coaxially passes through tapered piston, and hollow piston rod right end is set
There is a sealing cantilever, seals and offer air inlet on cantilever；T-type sleeve is sleeved on hollow piston rod, T-type sleeve left end with
Right cylinder lid is connected；Sliding bearing one is respectively arranged between hollow piston rod and right cylinder lid and T-type sleeve, hollow piston rod right end stretches out
Outside T-type sleeve, T-type sleeve right end connects annular support plate, leads between annular support plate and the sealing cantilever of hollow piston rod
Mounting bracket installation dial bore gage is crossed, dial bore gage gauge head is connected with sealing cantilever；
The measurement position regulating and controlling mechanism includes driving motor, electric machine support, gear, rack gear, sleeve, annular support plate, leads
Bar, sliding bearing two；Driving motor is mounted on fixed platform on the end face of moving platform by electric machine support；Gear is mounted on drive
On dynamic motor output shaft；Sleeve is sleeved on T-type sleeve by the sliding bearing two at both ends, and rack gear is mounted on sleeve, and with
Gear is meshed；The one end of sleeve far from fixed platform is connect through sliding bearing three with annular support plate；Annular support plate is circumferentially
Uniformly distributed two guide rods；Guide rod is slidably disposed through moving platform and fixed platform；
The T-type sleeve of adaptive measuring and indication mechanism is sheathed in the sleeve of measurement position regulating and controlling mechanism, and dial bore gage,
Mounting bracket and annular support plate are stretched out outside sleeve, and parallel connection type positioning passes through through-hole one, the moving platform of fixed platform with clamp system
Through-hole two be sheathed on the sleeve of measurement position regulating and controlling mechanism；
The system controller is electrical connected with driving motor, cylinder.
2. the gas formula inner diameter gauge according to claim 1 for the detection of equal diameter deep hole, it is characterised in that: the gas
The quantity of cylinder is 3.
3. the gas formula inner diameter gauge according to claim 1 for the detection of equal diameter deep hole, it is characterised in that: described determines
The cone angle of the tapered positioning surface of platform is designed according to measured workpiece orifice chamfer.
4. the gas formula inner diameter gauge according to claim 1 for the detection of equal diameter deep hole, it is characterised in that: in described
Empty piston rod left end is coaxially connected with tapered piston；Sliding ring is equipped between the tapered piston and cylinder barrel.
5. the gas formula inner diameter gauge according to claim 1 for the detection of equal diameter deep hole, it is characterised in that: in described
Sliding bearing one is respectively arranged between empty piston rod and right cylinder lid and T-type sleeve.
6. the gas formula inner diameter gauge according to claim 1 for the detection of equal diameter deep hole, it is characterised in that: the survey
Headstock and the close one end of tapered piston are equipped with a rotatable straight pin, and straight pin can be slided along tapered piston sliding slot；
The gauge head is used with measuring head base and is threadedly coupled, and adjustable distance is 1~3mm between the two.
7. the gas formula inner diameter gauge according to claim 1 for the detection of equal diameter deep hole, it is characterised in that: the ring
Sliding bearing three is equipped between shape support plate and elongate sleeve.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821688941.9U CN209416236U (en) | 2018-10-18 | 2018-10-18 | A kind of gas formula inner diameter gauge for the detection of equal diameter deep hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821688941.9U CN209416236U (en) | 2018-10-18 | 2018-10-18 | A kind of gas formula inner diameter gauge for the detection of equal diameter deep hole |
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| CN209416236U true CN209416236U (en) | 2019-09-20 |
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| CN201821688941.9U Active CN209416236U (en) | 2018-10-18 | 2018-10-18 | A kind of gas formula inner diameter gauge for the detection of equal diameter deep hole |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109282727A (en) * | 2018-10-18 | 2019-01-29 | 南京信息职业技术学院 | A kind of gas formula inner diameter gauge for the detection of equal diameter deep hole |
| CN115388837A (en) * | 2022-08-16 | 2022-11-25 | 西北核技术研究所 | Deep hole morphology measuring device for different apertures |
| CN115585725A (en) * | 2022-12-12 | 2023-01-10 | 华兴智慧(北京)科技有限公司 | Aperture detection device that metal insert used |
-
2018
- 2018-10-18 CN CN201821688941.9U patent/CN209416236U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109282727A (en) * | 2018-10-18 | 2019-01-29 | 南京信息职业技术学院 | A kind of gas formula inner diameter gauge for the detection of equal diameter deep hole |
| CN109282727B (en) * | 2018-10-18 | 2023-08-29 | 南京信息职业技术学院 | Gas type inner diameter measuring tool for detecting equal-diameter deep holes |
| CN115388837A (en) * | 2022-08-16 | 2022-11-25 | 西北核技术研究所 | Deep hole morphology measuring device for different apertures |
| CN115585725A (en) * | 2022-12-12 | 2023-01-10 | 华兴智慧(北京)科技有限公司 | Aperture detection device that metal insert used |
| CN115585725B (en) * | 2022-12-12 | 2023-03-03 | 华兴智慧(北京)科技有限公司 | Aperture detection device that metal insert used |
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