CN207163382U - Multi-functional screw thread checking device - Google Patents

Multi-functional screw thread checking device Download PDF

Info

Publication number
CN207163382U
CN207163382U CN201721035833.7U CN201721035833U CN207163382U CN 207163382 U CN207163382 U CN 207163382U CN 201721035833 U CN201721035833 U CN 201721035833U CN 207163382 U CN207163382 U CN 207163382U
Authority
CN
China
Prior art keywords
thread
depth
chamfering
sleeve
feeler gauge
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201721035833.7U
Other languages
Chinese (zh)
Inventor
谢运开
杨泉
邹麟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qingling Motors Group Co Ltd
Original Assignee
Qingling Motors Group Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Qingling Motors Group Co Ltd filed Critical Qingling Motors Group Co Ltd
Priority to CN201721035833.7U priority Critical patent/CN207163382U/en
Application granted granted Critical
Publication of CN207163382U publication Critical patent/CN207163382U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Length-Measuring Instruments Using Mechanical Means (AREA)

Abstract

The utility model provides a kind of multi-functional screw thread checking device, feeler gauge not-go-end and feeler gauge go side including feeler gauge main body and positioned at feeler gauge main body both ends, depth of thread measuring mechanism is provided with the feeler gauge main body, the depth of thread measuring mechanism includes the depth of thread sleeve being arranged in feeler gauge main body and the depth of thread chi being arranged in depth of thread sleeve, scale is provided with the depth of thread sleeve and depth of thread chi, and forms depth of thread survey measurements area.The utility model adds depth of thread measuring mechanism on the basis of traditional accuracy of thread detection.The depth of thread measures, and after plug thread gauge go side screws in screw in place, after slide downward depth of thread chi lower end to threaded bores end face is bonded, can directly read the depth that plug thread gauge screws in screw by the number reading method of slide measure in depth of thread survey measurements area;Measurement efficiency is also improved while measurement accuracy is improved and reduces the dependence to other measurers.

Description

Multi-functional screw thread checking device
Technical field
The utility model belongs to cubing technical field, more particularly to a kind of multi-functional screw thread checking device.
Background technology
The conventional technical requirements of one screwed hole of processing have:Accuracy of thread, thread Pilot hole depth, thread Pilot hole size, spiral shell Line depth, chamfering angle size etc., and present screw thread checking device can only check accuracy of thread, several above be checked, except Also to be used cooperatively outside screw thread checking device with the exterior measuring slide measure with depth survey function to be carried out.The depth of thread is such as measured, The plug thread gauge other end is measured to the height of screw thread hole end surface after plug thread gauge being first screwed into screw bosom and writes down number According to then screwing out its overall length of plug thread gage measurement and record length data, finally being subtracted each other with the two data can just obtain surveying Screw thread hole depth;Threaded bores chamfering is and for example measured, the precision custom requirements of chamfering angle size are ± 0.5, but means suitable is high Be ± 0.2, the intersection for going to align chamfering and workpiece planarization by human eye with the exterior measuring pin of slide measure does not reach requirement.
The content of the invention
The deficiencies in the prior art in view of the above, the purpose of this utility model are to provide a kind of multi-functional screw thread inspection Tool, is easy to screwed hole depth survey.
In order to achieve the above objects and other related objects, technical solutions of the utility model are as follows:
A kind of multi-functional screw thread checking device, including feeler gauge main body and feeler gauge not-go-end positioned at feeler gauge main body both ends and feeler gauge lead to Hold, depth of thread measuring mechanism is provided with the feeler gauge main body, the depth of thread measuring mechanism includes being arranged on feeler gauge main body On depth of thread sleeve and the depth of thread chi that is arranged in depth of thread sleeve, the depth of thread sleeve and the depth of thread It is provided with chi, and forms depth of thread survey measurements area.
Using said structure, on the basis of traditional accuracy of thread detection, depth of thread measuring mechanism is added.Screw thread is deep Degree measurement, after plug thread gauge go side screws in screw in place, after slide downward depth of thread chi lower end to threaded bores end face is bonded, The depth that plug thread gauge screws in screw can be directly read by the number reading method of slide measure in depth of thread survey measurements area;Knot Structure is simple, is easy to the depth of thread to measure, easy to operate.Measurement efficiency is also improved while measurement accuracy is improved and is reduced Dependence to other measurers.
Further, the depth of thread sleeve is fixedly mounted in feeler gauge main body, and deep close to feeler gauge go side, the screw thread Handle is provided with degree chi;Two symmetric sides of the depth of thread sleeve are provided with scale and first window, the depth of thread Two symmetric sides of chi are provided with scale.
Further, thread Pilot hole depth survey mechanism and chamfering angle size measuring mechanism are additionally provided with the feeler gauge main body, The thread Pilot hole depth survey mechanism includes the thread Pilot hole deep sleeve that can be slided relative to feeler gauge main body and is arranged on spiral shell Thread Pilot hole depth survey scale in line bottom outlet deep sleeve, the chamfering angle size measuring mechanism includes can be relative to feeler gauge master Chamfering sleeve, the chamfering measuring staff being arranged in chamfering sleeve and the chamfering measurement edge of a knife being connected with chamfering measuring staff that body slides;Institute State thread Pilot hole deep sleeve, thread Pilot hole depth survey scale, chamfering sleeve, be provided with scale on chamfering measuring staff.
Further, the feeler gauge go side is fixedly mounted on feeler gauge main body lower end or is removably mounted under feeler gauge main body End, the feeler gauge main body axially offer mounting hole, and the thread Pilot hole deep sleeve is arranged in the mounting hole, the screw thread Bottom outlet depth survey scale upper end is through feeler gauge go side and stretches into the thread Pilot hole deep sleeve, and the feeler gauge main body offers Window for thread Pilot hole depth reading.
Further, the window is along the bar-shaped trough for running through feeler gauge body side, the thread Pilot hole deep sleeve and bar Guide frame is provided between shape groove.
Further, in addition to for support the fixed support of chamfering sleeve and for connection screw thread bottom outlet deep sleeve and The connecting bracket of chamfering sleeve, the fixed support are arranged in feeler gauge main body, and the chamfering sleeve can slide up and down to setting In fixed support, the feeler gauge body side offers guide groove, and the connecting bracket passes through guide groove, both ends respectively with spiral shell Line bottom outlet deep sleeve and chamfering sleeve connection.Chamfering sleeve is connected with thread Pilot hole deep sleeve by connecting bracket, along plug Rule main body synchronously slides up and down, the operation being easy in measurement process.
Further, the connecting bracket and fixed support are respectively two groups up and down, fixed support structure in a ring.
Further, the chamfering cartridges sides offer the groove for chamfering measuring staff reading.Make the quarter on chamfering measuring staff Degree exposes, and is easy to reading.
Further, the chamfering sleeve top is provided with gland, and the chamfering measuring staff extends upwardly into chamfering lower cartridge, institute State the chamfering measurement edge of a knife and be arranged on chamfering measuring staff lower end, be provided with spring between the chamfering measuring staff upper end and gland, it is described The angular measurement edge of a knife has inclined measuring surface.Measuring chamfering by spring, the edge of a knife is kept and the compression of fillet surface, guarantee measure As a result accurate.
Further, the thread Pilot hole depth survey scale lower end is connected with survey mass.Pass through survey mass and thread Pilot hole Coordinate, it is ensured that the accuracy of depth survey.
As described above, the beneficial effects of the utility model are:On the basis of traditional accuracy of thread detection, screw thread is added Three sets of depth, thread Pilot hole depth, chamfering angle size measuring mechanisms.While accuracy of thread is measured, other inspection measurers are not borrowed It can complete to the depth of thread, thread Pilot hole depth, the accurate measurement of threaded bores chamfer dimesion, improve the same of measurement accuracy When also improve measurement efficiency and reduce the dependence to other measurers.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model embodiment 1;
Fig. 2 is the structural representation of the utility model embodiment 2;
Fig. 3 is A direction views in Fig. 2;
Fig. 4 is the connection diagram of thread Pilot hole deep sleeve and chamfering angle size measuring mechanism in embodiment 2.
Piece mark explanation
1- feeler gauge main bodys
11- feeler gauges go side
12- feeler gauge not-go-end
13- windows
14- guide grooves
21- depth of thread sleeves
22- depth of thread chis
23- depth of thread survey measurements area
24- handles
31- thread Pilot hole deep sleeves
32- thread Pilot hole depth survey scales
33- survey mass
34- thread Pilot hole depth survey readings area
35- guide pads
41- chamfering sleeves
42- chamfering measuring staffs
43- chamferings measure the edge of a knife
44- chamfering angle size survey measurements area
45- glands
46- springs
47- grooves
51- fixed supports
52- connecting brackets
6- tested parts
Embodiment
Embodiment of the present utility model is illustrated by particular specific embodiment below, those skilled in the art can be by this Content disclosed by specification understands other advantages and effect of the present utility model easily.
Embodiment 1
The schematic diagram on tested part 6 is arranged on for the utility model as shown in Figure 1, wherein, more work(of the present utility model Energy screw thread checking device includes feeler gauge main body 1 and the feeler gauge not-go-end 12 positioned at the both ends of feeler gauge main body 1 and feeler gauge go side 11, feeler gauge main body Depth of thread measuring mechanism is provided with 1, the depth of thread measuring mechanism includes the depth of thread set being arranged in feeler gauge main body 1 Cylinder 21 and the depth of thread chi 22 that is arranged in depth of thread sleeve 21, it is all provided with depth of thread sleeve 21 and depth of thread chi 22 It is equipped with scale, the scale on depth of thread sleeve 21 and depth of thread chi 22 forms depth of thread survey measurements area 23.
For ease of reading, scale and first window are provided with two relative sides of depth of thread sleeve 21, in spiral shell Line depth gauge rule 22 is provided with scale on two relative sides, so that operating personnel can reading in front and back.
The utility model adds depth of thread measuring mechanism on the basis of traditional accuracy of thread detection.The depth of thread Measurement, after plug thread gauge go side 11 screws in screw in place, the lower end of slide downward depth of thread chi 22 to threaded bores end face is bonded Afterwards, the depth that plug thread gauge screws in screw can be directly read by the number reading method of slide measure in depth of thread survey measurements area 23 Degree;It is simple in construction, it is easy to the depth of thread to measure, it is easy to operate.Measurement efficiency is also improved while measurement accuracy is improved simultaneously Reduce the dependence to other measurers.
Further, depth of thread sleeve 21 can be fixed in feeler gauge main body 1 by way of bolt or welding, and close to plug Go side 11 is advised, handle 24 is provided with the depth of thread chi 22, is easy to down operation depth of thread chi 22.
Embodiment 2
Further as shown in Figures 2 to 4, on the basis of embodiment 1, thread Pilot hole is additionally provided with feeler gauge main body 1 Depth survey mechanism and chamfering angle size measuring mechanism.
Wherein, thread Pilot hole depth survey mechanism includes the thread Pilot hole deep sleeve that can be slided relative to feeler gauge main body 1 31 and the thread Pilot hole depth survey scale 32 that is arranged in thread Pilot hole deep sleeve 31, chamfering angle size measuring mechanism includes can The chamfering sleeve 41 slided relative to feeler gauge main body 1, the chamfering measuring staff 42 that is arranged in chamfering sleeve 41 and with chamfering measuring staff 42 The chamfering measurement edge of a knife 43 of connection;Scale is provided with thread Pilot hole deep sleeve 31 and thread Pilot hole depth survey scale 32, So as to form thread Pilot hole depth survey reading area 34;Scale is provided with chamfering sleeve 41 and on chamfering measuring staff 42, so as to shape Into chamfering angle size survey measurements area 44.
Specifically, feeler gauge main body 1 is central axial offers mounting hole, and mounting hole runs through the lower end of feeler gauge main body 1, feeler gauge go side 11 are removably mounted on the lower end of feeler gauge main body 1 (as being threadedly coupled), or feeler gauge go side 11 connects with feeler gauge main body 1 to be fixed Connect, thread Pilot hole deep sleeve 31 is arranged in the mounting hole, and can be slided up and down along mounting hole;Thread Pilot hole depth survey mark The upper end of chi 32 passes through the centre bore of feeler gauge go side 11, and stretches into thread Pilot hole deep sleeve 31, and the side of feeler gauge main body 1 offers Window 14 for thread Pilot hole depth reading.
Wherein, the window 14 is the bar-shaped trough through the two sides of feeler gauge main body 1, and bar-shaped trough is set along the vertical direction, spiral shell Guide frame is additionally provided between line bottom outlet deep sleeve 31 and bar-shaped trough, the guide frame is to be arranged on thread Pilot hole depth set Guide pad 35 on cylinder 31, prevents thread Pilot hole deep sleeve 31 from rotating, and it is vertically slided.Thread Pilot hole depth survey The lower end of scale 32 is connected with the survey mass 33 being adapted with screwed hole bottom.Coordinated by survey mass 33 and thread Pilot hole, realization is arrived Stop behind position, it is ensured that the accuracy of depth survey, survey mass 33 is circle in this example.
Further, the support for ease of chamfering sleeve 41 and the synchronization of chamfering sleeve 41 and thread Pilot hole deep sleeve 31 It is mobile, it is additionally provided with the fixed support 51 for supporting chamfering sleeve 41 and for connection screw thread bottom outlet deep sleeve 31 and falls The connecting bracket 52 of angle sleeve 41, connecting bracket 52 and fixed support 51 are respectively two groups up and down, and the one end of fixed support 51 passes through It is bolted in the side wall of feeler gauge main body 1, other end structure in a ring, the support after loading so as to chamfering sleeve 41, chamfering sleeve Cylinder 41, which can slide up and down to, to be arranged in fixed support 51.
Circumferential movement is oriented to and limited during for ease of sliding up and down, and two bar shapeds up and down are offered in the side of feeler gauge main body 1 Guide groove 14, upper and lower two groups of connecting brackets 52 pass through guide groove 14, the both ends of connecting bracket 52 respectively with thread Pilot hole depth set Cylinder 31 and chamfering sleeve 41 connect.Chamfering sleeve 41 and thread Pilot hole deep sleeve 31 are connected by connecting bracket 52, along feeler gauge Main body 1 synchronously slides up and down, the simultaneously operating being easy in measurement process.
Further, described 41 liang of symmetric sides of chamfering sleeve offer the groove 47 for the reading of chamfering measuring staff 42.Make Scale on chamfering measuring staff 42 exposes, and is easy to reading.
The top of chamfering sleeve 41 is provided with gland 45, and chamfering measuring staff 42 extends upwardly into the bottom of chamfering sleeve 41, chamfering measurement The edge of a knife 43 is arranged on the lower end of chamfering measuring staff 42, and spring 46, chamfering measurement knife are provided between the upper end of chamfering measuring staff 42 and gland 45 Mouth 43 has inclined measuring surface.Chamfering is measured inclined-plane holding and the compression of fillet surface of the edge of a knife 43 by spring 46, ensure Measurement result it is accurate.
Chamfering sleeve 41, chamfering measuring staff 42, thread Pilot hole deep sleeve 31 and thread Pilot hole depth survey scale 32 are just Anti- two sides all set scale, and open up reading window in the positive and negative two sides of sleeve, so as to the reading of both direction.
Utility model works principle is as follows:
The depth of thread is measured, and after plug thread gauge screws in screw in place, slide downward depth of thread surveyors' staff lower end is arrived After the fitting of threaded bores end face, spiral shell can be directly read by the number reading method of slide measure at depth of thread survey measurements area 23 Screw plug ga screws in the depth of screw;Threaded bores chamfer dimesion measures, after plug thread gauge screws in screw, slide downward chamfering sleeve Cylinder 41, chamfering measuring staff 42 and the chamfering measurement edge of a knife 43, make the lower surface of chamfering sleeve 41 be attached on threaded bores end face, chamfering measurement When the edge of a knife 43 is attached at threaded bores chamfering, it can be read in chamfering angle size survey measurements area 44 by the number reading method of slide measure The size of threaded bores chamfering;The measurement of thread Pilot hole depth, after plug thread gauge screws in screw, thread Pilot hole deep sleeve 31 It is servo-actuated with chamfering sleeve 41, after being attached in the lower surface of chamfering sleeve 41 on threaded bores end face, slide downward thread Pilot hole depth Surveyors' staff 32, to the lower end of survey mass 33 to thread Pilot hole bottom after, can be by vernier calliper in chamfering angle size survey measurements area 44 The number reading method of chi can directly read the depth of thread Pilot hole.
The feeler gauge structure, while accuracy of thread is measured, not borrowing other inspection measurers can complete to the depth of thread, spiral shell Line bottom outlet depth, the accurate measurement of threaded bores chamfer dimesion, measurement efficiency is also improved simultaneously while measurement accuracy is improved Reduce the dependence to other measurers.
Any person skilled in the art all can be without prejudice under spirit and scope of the present utility model, to above-described embodiment Carry out modifications and changes.Therefore, such as those of ordinary skill in the art without departing from disclosed in the utility model Spirit and all equivalent modifications for being completed under technological thought or change, should be contained by claim of the present utility model Lid.

Claims (10)

1. a kind of multi-functional screw thread checking device, including feeler gauge main body and feeler gauge not-go-end positioned at feeler gauge main body both ends and feeler gauge lead to End, it is characterised in that:Depth of thread measuring mechanism is provided with the feeler gauge main body, the depth of thread measuring mechanism includes setting Depth of thread sleeve and the depth of thread chi being arranged in depth of thread sleeve, the depth of thread sleeve in feeler gauge main body With scale is provided with depth of thread chi, and form depth of thread survey measurements area, first offered on depth of thread sleeve Window.
2. multi-functional screw thread checking device according to claim 1, it is characterised in that:The depth of thread sleeve is fixedly mounted on In feeler gauge main body, and handle is provided with feeler gauge go side, the depth of thread chi, the two of the depth of thread sleeve are symmetrical Side is provided with scale and first window, and two symmetric sides of depth of thread chi are provided with scale.
3. multi-functional screw thread checking device according to claim 1, it is characterised in that:Screw thread is additionally provided with the feeler gauge main body Bottom outlet depth survey mechanism and chamfering angle size measuring mechanism, the thread Pilot hole depth survey mechanism includes can be relative to feeler gauge master The thread Pilot hole deep sleeve that body slides and the thread Pilot hole depth survey scale being arranged in thread Pilot hole deep sleeve, it is described Chamfering angle size measuring mechanism includes the chamfering sleeve that can be slided relative to feeler gauge main body, the chamfering measuring staff being arranged in chamfering sleeve The chamfering measurement edge of a knife being connected with chamfering measuring staff;The thread Pilot hole deep sleeve, thread Pilot hole depth survey scale, chamfering Scale is provided with sleeve, chamfering measuring staff.
4. multi-functional screw thread checking device according to claim 3, it is characterised in that:The feeler gauge go side is fixedly or removably Installed in feeler gauge main body lower end, the feeler gauge main body axially offers mounting hole, and the thread Pilot hole deep sleeve is arranged on this In mounting hole, the thread Pilot hole depth survey scale upper end is through feeler gauge go side and stretches into the thread Pilot hole deep sleeve, The feeler gauge body side offers the window for thread Pilot hole depth reading.
5. multi-functional screw thread checking device according to claim 4, it is characterised in that:The window is right through feeler gauge main body two Claim the bar-shaped trough of side, guide frame is provided between the thread Pilot hole deep sleeve and bar-shaped trough.
6. the multi-functional screw thread checking device according to claim 3 or 4, it is characterised in that:Also include being used to support chamfering sleeve Fixed support and connecting bracket for connection screw thread bottom outlet deep sleeve and chamfering sleeve, the fixed support be arranged on In feeler gauge main body, the chamfering sleeve, which can slide up and down to, to be arranged in fixed support, and the feeler gauge body side, which offers, leads To groove, the connecting bracket passes through guide groove, both ends respectively with thread Pilot hole deep sleeve and chamfering sleeve connection.
7. multi-functional screw thread checking device according to claim 6, it is characterised in that:The connecting bracket and fixed support difference For upper and lower two groups, fixed support structure in a ring.
8. the multi-functional screw thread checking device according to claim 3 or 4, it is characterised in that:The symmetric side of chamfering sleeve two Offer the groove for chamfering measuring staff reading.
9. the multi-functional screw thread checking device according to claim 3 or 4, it is characterised in that:The chamfering sleeve top is provided with Gland, the chamfering measuring staff extend upwardly into chamfering lower cartridge, and the chamfering measurement edge of a knife is arranged on chamfering measuring staff lower end, described Spring is provided between chamfering measuring staff upper end and gland, the chamfering measurement edge of a knife has inclined measuring surface.
10. the multi-functional screw thread checking device according to claim 3 or 4, it is characterised in that:The thread Pilot hole depth survey mark Chi lower end is connected with survey mass.
CN201721035833.7U 2017-08-17 2017-08-17 Multi-functional screw thread checking device Active CN207163382U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201721035833.7U CN207163382U (en) 2017-08-17 2017-08-17 Multi-functional screw thread checking device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201721035833.7U CN207163382U (en) 2017-08-17 2017-08-17 Multi-functional screw thread checking device

Publications (1)

Publication Number Publication Date
CN207163382U true CN207163382U (en) 2018-03-30

Family

ID=61716894

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201721035833.7U Active CN207163382U (en) 2017-08-17 2017-08-17 Multi-functional screw thread checking device

Country Status (1)

Country Link
CN (1) CN207163382U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109084667A (en) * 2018-07-03 2018-12-25 无锡吉兴汽车声学部件科技有限公司 Riding vehicle device thread measurement mechanism
CN110207573A (en) * 2019-05-29 2019-09-06 安徽天航机电有限公司 A kind of more specification rapid survey geometric depath devices of multipurpose
CN113532240A (en) * 2021-06-03 2021-10-22 杭州大和热磁电子有限公司 Internal thread depth detection tool

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109084667A (en) * 2018-07-03 2018-12-25 无锡吉兴汽车声学部件科技有限公司 Riding vehicle device thread measurement mechanism
CN110207573A (en) * 2019-05-29 2019-09-06 安徽天航机电有限公司 A kind of more specification rapid survey geometric depath devices of multipurpose
CN113532240A (en) * 2021-06-03 2021-10-22 杭州大和热磁电子有限公司 Internal thread depth detection tool

Similar Documents

Publication Publication Date Title
CN207163382U (en) Multi-functional screw thread checking device
CN110220439B (en) Crack measuring device for high-speed railway base inspection
CN105157522A (en) Measuring device for measuring height of conical surface of countersunk screw
CN102384709B (en) A kind of chamfer diameter measurement method for oil drilling tool connector
CN201059944Y (en) Hand-hold multi-items bearings measuring apparatus
CN103234424B (en) Valve seating external diameter measurer
CN108036696A (en) A kind of measuring device and measuring method of inner bore of part dovetail groove position dimension
CN201397109Y (en) Cylinder body bearing seat lateral face position inspection device
CN208476151U (en) A kind of threaded hole detection gauge
CN103134453B (en) Measuring head calibration method of thread combined function dimensional measurement instrument
CN103162649A (en) Thread combined action size measurement assessment method based on non-limit boundary
CN203148360U (en) Non-perpendicularity measuring tool used for holes
CN205718776U (en) Major diameter inside and outside circle double-purpose test measuring device
CN206269788U (en) Plumb line coordinator calibration tool
CN205300473U (en) Mar measuring apparatu
CN203881237U (en) Pitch diameter measuring device for large-size thread ring gage
CN210089528U (en) Steel construction installation engineering detection device
CN207180510U (en) A kind of Multifunction vernier calliper
CN207050595U (en) A kind of depth of thread rule of replaceable gauge head
CN202403673U (en) Laser measuring head and bearing internal diameter measuring machine using same
CN205537648U (en) A horizontal measuring instrument for industrial design
CN205957844U (en) Measure bridge plate of position accuracy between prism guide rail and dovetail guide rail
CN205561712U (en) High verifying attachment of supporting rack
CN208059721U (en) A kind of Novel vernier caliper
CN204085432U (en) Steam turbine connects cylinder smoothing measurement mechanism

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant