CN103954199A - Test tool for measuring height from center of gearbox synchronizer to shell junction surface - Google Patents

Test tool for measuring height from center of gearbox synchronizer to shell junction surface Download PDF

Info

Publication number
CN103954199A
CN103954199A CN201410200880.7A CN201410200880A CN103954199A CN 103954199 A CN103954199 A CN 103954199A CN 201410200880 A CN201410200880 A CN 201410200880A CN 103954199 A CN103954199 A CN 103954199A
Authority
CN
China
Prior art keywords
check
out console
mandrel
overcoat
cubing
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.)
Granted
Application number
CN201410200880.7A
Other languages
Chinese (zh)
Other versions
CN103954199B (en
Inventor
谢飞
黄浩
朱奇林
张青锋
张明
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.)
Anhui Jianghuai Automobile Group Corp
Original Assignee
Anhui Jianghuai Automobile Group Corp
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 Anhui Jianghuai Automobile Group Corp filed Critical Anhui Jianghuai Automobile Group Corp
Priority to CN201410200880.7A priority Critical patent/CN103954199B/en
Publication of CN103954199A publication Critical patent/CN103954199A/en
Application granted granted Critical
Publication of CN103954199B publication Critical patent/CN103954199B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • A Measuring Device Byusing Mechanical Method (AREA)

Abstract

The invention discloses a test tool for measuring the height from the center of a gearbox synchronizer to a shell junction surface. The test tool comprises a base, wherein the bottom surface of the base is attached to the shell junction surface. A central spindle is installed on the base. A test board is installed on the central spindle in a sliding mode in the axial direction. A test gage is installed on the test board. The test end of the test gage penetrates through the test board and abuts and presses against the upper surface of the central spindle. The test tool can be used for measuring the height from the center of the gearbox synchronizer to the shell junction surface simply and quickly, so that efficiency and reliability of height measurement are improved.

Description

A kind of cubing of Synchromous device of gearbox center to casing joint surface height of measuring
Technical field
The present invention relates to Components field, relate in particular to a kind of cubing of Synchromous device of gearbox center to casing joint surface height of measuring.
Background technology
The manufacturing accuracy of Synchromous device of gearbox and installation accuracy will directly can have influence on the stationarity of gearbox shifting, if the manufacturing accuracy of wheel box and installation accuracy are not high, in the time of gearshift, may form impact, the problem that even there will be certain gear to hang up, therefore, in wheel box assembling process, need to measure the height of Synchromous device of gearbox center to casing joint surface.
At present adopt traditional cubing to measure this height, for example vernier caliper is combined with height gauge or the mode of three-dimensional coordinates measurement more.Particularly, as shown in Figure 1, use height gauge to measure the lower plane of synchronizer to the distance L of casing joint surface, then use the width B of vernier caliper measurement synchronizer, use the value of L+B/2 as the measured value of height; Visible, use the mode that vernier caliper is combined with height gauge to measure above-mentioned height, measuring process is comparatively loaded down with trivial details, and simultaneous altitude chi volume is larger, cannot adapt to on-line measurement working condition requirement, may interfere with the parts of wheel box assembling; And the mode of use three-dimensional coordinates measurement need to be delivered to transmission assembly three-dimensional coordinates measurement chamber to detect, flow process is loaded down with trivial details, and labour intensity is larger, measures efficiency lower.
Therefore, develop a kind of cubing of Synchromous device of gearbox center to casing joint surface height of measuring, to measure quickly and easily the height of Synchromous device of gearbox center to casing joint surface, improve efficiency and reliability that this height is measured, need the problem of solution badly with regard to becoming those skilled in the art.
Summary of the invention
The object of this invention is to provide a kind of cubing of Synchromous device of gearbox center to casing joint surface height of measuring, it can measure the height of Synchromous device of gearbox center to casing joint surface quickly and easily, thereby has improved efficiency and reliability that this height is measured.
To achieve these goals, the invention provides a kind of cubing of Synchromous device of gearbox center to casing joint surface height of measuring, comprise the base fitting with its bottom surface and casing joint surface, on described base, mandrel is installed, on described mandrel, slide axially check-out console is installed, detection table is installed on described check-out console, and described check-out console is passed in the test side of described detection table, and presses on the upper surface of described mandrel.
Preferably, also comprise the overcoat that is installed on described check-out console lower surface, described overcoat is sheathed on described mandrel, and can slide axially along described mandrel.
Preferably, between described overcoat and described mandrel, be provided with limiting component, described limiting component limits described overcoat along described mandrel sliding scale in the axial direction.
Preferably, described limiting component comprises the bar hole that is opened in described mandrel, and is arranged at described overcoat, and the banking pin sliding in described bar hole.
Preferably, between described overcoat and described base, be provided with spring, described spring housing is located at described mandrel, and its upper end is fixed on described overcoat, and described base is fixed in described lower end.
Preferably, described overcoat is connected by trip bolt with described check-out console.
Preferably, between the test side of described detection table and the mounting hole of described check-out console, be provided with resilient sleeve, described resilient sleeve and described test side clearance fit, and with described mounting hole clearance fit.
Preferably, the sidewall of described resilient sleeve offers opening.
Preferably, a side of described check-out console is provided with hold-down bolt, and the nut of described hold-down bolt is positioned at described check-out console outside, and its screw rod is through described check-out console, and side direction compresses described resilient sleeve.
Preferably, described detection table is dial gauge.
Measurement Synchromous device of gearbox provided by the invention center is to the cubing of casing joint surface height, comprise the base fitting with its bottom surface and casing joint surface, on described base, mandrel is installed, on described mandrel, slide axially check-out console is installed, detection table is installed on described check-out console, described check-out console is passed in the test side of described detection table, and presses on the upper surface of described mandrel.
Measure Synchromous device of gearbox center in the process of casing joint surface height, the bottom surface of base is positioned over to casing joint surface, along the height of the axial adjustment check-out console of mandrel, in the time that the upper plane of check-out console fits in the upper surface of synchronous tank, record detects the first reading of table, then continue to adjust the axial location of check-out console on mandrel, in the time that the lower plane of check-out console fits in the lower surface of synchronous tank, record detects the second reading of table, the synchronizer center that is actual measurement is the half of the first reading and the second reading sum to casing joint surface height, thereby can judge that according to actual preliminary dimension this is highly whether qualified.Like this, this cubing can be measured the height of Synchromous device of gearbox center to casing joint surface quickly and easily, thereby has improved efficiency and reliability that this height is measured.
One preferred embodiment in, measurement Synchromous device of gearbox provided by the present invention center also comprises to the cubing of casing joint surface height the overcoat that is installed on described check-out console lower surface, described overcoat is sheathed on described mandrel, and can slide axially along described mandrel; Because overcoat, check-out console and detection table are the entirety of a connection, the lower plane of overcoat is leaned against and detected in the upper plane of base, the school zero that detection table is carried out zero clearing and can realize cubing; Like this, this cubing can realize self-correcting zero, and does not need other calibrating device can complete school zero, has simplified the use procedure of cubing.
In another preferred embodiment, measurement Synchromous device of gearbox provided by the present invention center is to the cubing of casing joint surface height, described in it, a side of check-out console is provided with hold-down bolt, the nut of this hold-down bolt is positioned at described check-out console outside, and its screw rod is through described check-out console, and side direction compresses described resilient sleeve; Lock-screw is screwed into check-out console, thereby extruding resilient sleeve produces elastic deformation, makes resilient sleeve hold the test side of detection table tightly, thereby has realized the locking of detection table, avoid detection table to be moved in the process of measuring and affected detection, thereby further having improved accuracy of detection.
Brief description of the drawings
In order to be illustrated more clearly in the embodiment of the present application or technical scheme of the prior art, to the accompanying drawing of required use in embodiment be briefly described below, apparently, the accompanying drawing the following describes is only some embodiment that record in the present invention, for those of ordinary skill in the art, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is a kind of schematic diagram of traditional measurement method;
Fig. 2 is the front view of a kind of embodiment of cubing provided by the present invention;
Fig. 3 is the vertical view of cubing shown in Fig. 2;
Fig. 4 is the left view of cubing shown in Fig. 3;
Fig. 5 is the cut-open view of A-A direction in Fig. 3;
Fig. 6 is the structural drawing of the cover of cubing Elastic shown in Fig. 2;
Fig. 7 is the vertical view of resilient sleeve shown in Fig. 6
Description of reference numerals:
1-base 2-overcoat 3-check-out console 4-dial gauge 5-hold-down bolt 6-resilient sleeve
61-opening 7-mandrel 8-spring 9-bar hole 10-trip bolt 11-banking pin
Embodiment
Core of the present invention is to provide a kind of cubing of Synchromous device of gearbox center to casing joint surface height of measuring, and it can measure the height of Synchromous device of gearbox center to casing joint surface quickly and easily, thereby has improved efficiency and reliability that this height is measured.
In order to make those skilled in the art understand better technical scheme of the present invention, below in conjunction with accompanying drawing, the present invention is further detailed.
Please refer to Fig. 2 to Fig. 7, in a kind of embodiment, measurement Synchromous device of gearbox provided by the invention center is to the cubing of casing joint surface height, comprise the base 1 fitting with its bottom surface and casing joint surface, on described base 1, mandrel 7 is installed, on described mandrel 7, slides axially check-out console 3 is installed, on described check-out console 3, detection table is installed, described check-out console 3 is passed in the test side of described detection table, and presses on the upper surface of described mandrel 7.
Measure Synchromous device of gearbox center in the process of casing joint surface height, the bottom surface of base 1 is placed and casing joint surface, along the height of the axial adjustment check-out console 3 of mandrel 7, in the time that the upper plane of check-out console 3 fits in the upper surface of synchronous tank, record detects the first reading of table, then continue to adjust the axial location of check-out console 3 on mandrel 7, in the time that the lower plane of check-out console 3 fits in the lower surface of synchronous tank, record detects the second reading of table, the synchronizer center that is actual measurement is the half of the first reading and the second reading sum to casing joint surface height, thereby can judge that according to actual preliminary dimension this is highly whether qualified.Like this, this cubing can be measured the height of Synchromous device of gearbox center to casing joint surface quickly and easily, thereby has improved efficiency and reliability that this height is measured.
Above-mentioned detection table is preferably dial gauge 4, to ensure the measuring accuracy of cubing; Apparently, detect table also can for other can display measurement value element, such as electronic watch etc., and due to electronics watchband overlaying function, its final reading of use electronic watch is the deviation of measured value.
As mentioned above, in height detection process, the bottom surface of base 1 need to fit with casing joint surface, the upper surface of base 1 need to fit with the bottom surface of mandrel 7, therefore the bottom surface of base 1 and the flatness of upper surface are had relatively high expectations, getting in the present embodiment flatness is 0.01mm, and the depth of parallelism of two planes is 0.01mm; Apparently, require as long as two surfaces of base 1 can meet flatness, be also not limited to above-mentioned concrete numerical value.
In order to ensure the connection reliability of base 1 and mandrel 7, and realize both detachable, base 1 can be fixedly connected with mandrel 7 by attachment screw; Apparently, it is fastening that base 1 and mandrel 7 are not limited to the mode being connected by screw, and also can adopt the conventional mode using in this area to realize both being fixedly connected with, such as bearing pin connection or clamping etc.
Can also be further improved to the cubing of casing joint surface height measurement Synchromous device of gearbox provided by the present invention center.
In above-mentioned embodiment, cubing provided by the present invention also comprises the overcoat 2 that is installed on described check-out console 3 lower surfaces, and described overcoat 2 is sheathed on described mandrel 7, and can slide axially along described mandrel 7; Because overcoat 2, check-out console 3 and detection table are the entirety of a connection, the lower plane of overcoat 2 is leaned against and detected in the upper plane of base 1, the school zero that detection table is carried out zero clearing and can realize cubing; Like this, this cubing can realize self-correcting zero, and does not need other calibrating device can complete school zero, has simplified the use procedure of cubing.
Above-mentioned overcoat 2 is connected by trip bolt 10 with check-out console 3, and overcoat 2 and check-out console 3 can be free to slide along the outer wall of mandrel 7 as a whole, and overcoat 2 adopts clearance fit with mandrel 7, and suggestion adopts H7/g6.Apparently, overcoat 2 is also not limited to screw with the mode that is fixedly connected with of check-out console 3 and is connected, also can adopt this area conventional use other be fixedly connected with mode, such as clamping or bearing pin connection etc.
Further, in order to improve accuracy of detection, it is high that the flatness of the upper plane of overcoat 2 is wanted, and getting in the present embodiment flatness is 0.01mm.
In order to limit described overcoat 2 along described mandrel 7 sliding scale in the axial direction, avoid overcoat 2 to slide and excessively depart from mandrel 7, between overcoat 2 and mandrel 7, be provided with limiting component.
Particularly, described limiting component comprises the bar hole 9 that is opened in described mandrel 7, and is arranged at described overcoat 2 banking pin 11 in described bar hole 9 interior slips, limits the sliding scale of banking pin 11 by the hole wall of bar hole 9, can play position-limiting action.Apparently, the length of offering of bar hole 9 should be definite according to actual service condition, to ensure measurement range and to avoid overcoat 2 slippages to be as the criterion.
Above-mentioned limiting component is also not limited to the mode that above-mentioned bar hole 9 coordinates with banking pin 11, and for example, this limiting component can also be for being opened in overcoat 2 and the mandrel 7 spacing slide rail on both etc.
Between overcoat 2 and base 1, be provided with spring 8, described spring 8 is sheathed on described mandrel 7, and its upper end is fixed on described overcoat 2, and described base 1 is fixed in described lower end, to eliminate the deadweight of overcoat 2 and check-out console 3, handled easily personnel's operation.
Particularly, can offer mounting hole in overcoat 2 bottoms, spring 8 is arranged in this mounting hole, and is fixed on the end difference of overcoat 2 with its upper end.
In above-mentioned embodiment; between the test side of detection table and the mounting hole of check-out console 3, be provided with resilient sleeve 6; described resilient sleeve 6 and described test side clearance fit; and with described mounting hole clearance fit; so that protection detects table in measuring process; avoid the damage of detection table, improved the serviceable life of detection table.
The sidewall of this resilient sleeve 6 offers opening 61, to be arranged on test side by opening 61, simplifies the installation process of resilient sleeve 6.
One side of above-mentioned check-out console 3 is provided with hold-down bolt 5, and the nut of this hold-down bolt 5 is positioned at described check-out console 3 outsides, and its screw rod is through described check-out console 3, and side direction compresses described resilient sleeve 6; Lock-screw is screwed into check-out console 3, thereby extruding resilient sleeve 6 produces elastic deformation, makes resilient sleeve 6 hold the test side of detection table tightly, thereby has realized the locking of detection table, avoid detection table to be moved in the process of measuring and affected detection, thereby further having improved accuracy of detection.
Taking above-mentioned embodiment as example, sketch the testing process of cubing provided by the present invention below.
Taking following wheel box as example, the synchronizer width of this wheel box is 12.05 ± 0.02mm, and synchronizer center to the height dimension requirement of casing joint surface is
First the lower plane of overcoat 2 is leaned against in the upper plane that detects base 1, dial gauge 4 is carried out to zero clearing, to realize school zero;
If the height of base 1 is a, the height of overcoat 2 is b, the thickness of check-out console 3 is c, in the time that the bottom surface of check-out console 3 leans against the lower plane of synchronous tank, dial gauge 4 readings are y1, and in the time that the upper surface of check-out console 3 leans against the upper plane of synchronous tank, dial gauge 4 readings are y2, the synchronizer center of actual measurement equals to detect to casing joint surface distance measures synchronous tank lower plane apart from adding the half of measuring upper plan range sum,
a + b + y 1 + a + b + c + y 2 2 = 94.625 - 0.46 + 0.425 , Can calculate y 1 + y 2 = 2 * 94.625 - 0.46 + 0.425 - 2 a - 2 b - c ; Need only the data that detect in this scope, highly qualified.
Further, in order to reduce detection error, a of cubing, b, the actual (real) thickness that c value all can detect base 1, overcoat 2, check-out console 3 by measurement draws, detection does not just have foozle and the calibration error of cubing like this.
Only by the mode of explanation, some example embodiment of the present invention is described above, undoubtedly, for those of ordinary skill in the art, without departing from the spirit and scope of the present invention in the situation that, can revise described embodiment by various mode.Therefore, above-mentioned accompanying drawing is illustrative with being described in essence, should not be construed as the restriction to the claims in the present invention protection domain.

Claims (10)

1. measure the cubing of Synchromous device of gearbox center to casing joint surface height for one kind, it is characterized in that, comprise the base (1) fitting with its bottom surface and casing joint surface, mandrel (7) is installed on described base (1), on described mandrel (7), slide axially check-out console (3) is installed, described check-out console is provided with detection table on (3), described check-out console (3) is passed in the test side of described detection table, and presses on the upper surface of described mandrel (7).
2. cubing according to claim 1, it is characterized in that, also comprise the overcoat (2) that is installed on described check-out console (3) lower surface, described overcoat (2) is sheathed on described mandrel (7), and can slide axially along described mandrel (7).
3. cubing according to claim 2, it is characterized in that, between described overcoat (2) and described mandrel (7), be provided with limiting component, described limiting component limits described overcoat (2) along described mandrel (7) sliding scale in the axial direction.
4. cubing according to claim 3, it is characterized in that, described limiting component comprises the bar hole (9) that is opened in described mandrel (7), with be arranged at described overcoat (2), and in described bar hole (9) slide banking pin (11).
5. cubing according to claim 2, it is characterized in that, between described overcoat (2) and described base (1), be provided with spring (8), described spring (8) is sheathed on described mandrel (7), and described overcoat (2) is fixed in its upper end, described base (1) is fixed in described lower end.
6. cubing according to claim 2, is characterized in that, described overcoat (2) is connected by trip bolt (10) with described check-out console (3).
7. according to the cubing described in claim 1 to 6 any one, it is characterized in that, between the mounting hole of the test side of described detection table and described check-out console (3), be provided with resilient sleeve (6), described resilient sleeve (6) and described test side clearance fit, and with described mounting hole clearance fit.
8. cubing according to claim 7, is characterized in that, the sidewall of described resilient sleeve (6) offers opening (61).
9. cubing according to claim 8, it is characterized in that, one side of described check-out console (3) is provided with hold-down bolt (5), the nut of described hold-down bolt (5) is positioned at described check-out console (3) outside, and its screw rod is through described check-out console (3), and side direction compresses described resilient sleeve (6).
10. according to the cubing described in claim 1 to 6 any one, it is characterized in that, described detection table is dial gauge (4).
CN201410200880.7A 2014-05-13 2014-05-13 A kind of measure the Synchromous device of gearbox center cubing to casing joint surface height Active CN103954199B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410200880.7A CN103954199B (en) 2014-05-13 2014-05-13 A kind of measure the Synchromous device of gearbox center cubing to casing joint surface height

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410200880.7A CN103954199B (en) 2014-05-13 2014-05-13 A kind of measure the Synchromous device of gearbox center cubing to casing joint surface height

Publications (2)

Publication Number Publication Date
CN103954199A true CN103954199A (en) 2014-07-30
CN103954199B CN103954199B (en) 2016-09-07

Family

ID=51331509

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410200880.7A Active CN103954199B (en) 2014-05-13 2014-05-13 A kind of measure the Synchromous device of gearbox center cubing to casing joint surface height

Country Status (1)

Country Link
CN (1) CN103954199B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105486263A (en) * 2015-12-17 2016-04-13 芜湖市甬微制冷配件制造有限公司 Crankshaft flange testing fixture
CN105627962A (en) * 2015-12-17 2016-06-01 芜湖市甬微制冷配件制造有限公司 Crankshaft flange height gauge
CN117652551A (en) * 2024-02-02 2024-03-08 烟台福晟机械设备有限公司 Scallop processing production line

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4577412A (en) * 1984-10-18 1986-03-25 The Goodyear Tire & Rubber Company Rheometer rotor height gauge
JPH0861903A (en) * 1994-08-22 1996-03-08 Aisan Ind Co Ltd Multiple-point screw hight simultaneous measuring instrument
CN101915533A (en) * 2010-07-23 2010-12-15 浙江金刚汽车有限公司 Gasket measuring and matching check tool
CN202032980U (en) * 2011-01-13 2011-11-09 常州华德机械有限公司 Measuring tool for measuring surface height of lug of motor-car bogey axle box lower body
CN203298707U (en) * 2013-04-25 2013-11-20 自贡市川力实业有限公司 Symmetry detector for shafts
CN203824492U (en) * 2014-05-13 2014-09-10 安徽江淮汽车股份有限公司 Tester used for measuring height from gearbox synchronizer center to casing joint surface

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4577412A (en) * 1984-10-18 1986-03-25 The Goodyear Tire & Rubber Company Rheometer rotor height gauge
JPH0861903A (en) * 1994-08-22 1996-03-08 Aisan Ind Co Ltd Multiple-point screw hight simultaneous measuring instrument
CN101915533A (en) * 2010-07-23 2010-12-15 浙江金刚汽车有限公司 Gasket measuring and matching check tool
CN202032980U (en) * 2011-01-13 2011-11-09 常州华德机械有限公司 Measuring tool for measuring surface height of lug of motor-car bogey axle box lower body
CN203298707U (en) * 2013-04-25 2013-11-20 自贡市川力实业有限公司 Symmetry detector for shafts
CN203824492U (en) * 2014-05-13 2014-09-10 安徽江淮汽车股份有限公司 Tester used for measuring height from gearbox synchronizer center to casing joint surface

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105486263A (en) * 2015-12-17 2016-04-13 芜湖市甬微制冷配件制造有限公司 Crankshaft flange testing fixture
CN105627962A (en) * 2015-12-17 2016-06-01 芜湖市甬微制冷配件制造有限公司 Crankshaft flange height gauge
CN117652551A (en) * 2024-02-02 2024-03-08 烟台福晟机械设备有限公司 Scallop processing production line
CN117652551B (en) * 2024-02-02 2024-04-09 烟台福晟机械设备有限公司 Scallop processing production line

Also Published As

Publication number Publication date
CN103954199B (en) 2016-09-07

Similar Documents

Publication Publication Date Title
CN206300583U (en) Metal plate detection device
CN103940326B (en) A kind of Synchromous device of gearbox center that measures is to the cubing of casing joint surface height
CN201955042U (en) External circle diameter measuring caliper gauge
CN101319864A (en) Plug gauge head pore diameter measurement mechanism
CN103954199A (en) Test tool for measuring height from center of gearbox synchronizer to shell junction surface
CN103868441A (en) Test tool for detecting planeness of workpiece
CN201909601U (en) Camshaft signal measuring device
CN105865316B (en) For detecting the measuring scale of surface of concrete structure flatness
CN203824494U (en) Measuring device for countersink depth
CN202747979U (en) Part center hole size testing tool
CN203824492U (en) Tester used for measuring height from gearbox synchronizer center to casing joint surface
CN103344167A (en) Crankshaft semicircular key groove depth detection tool
CN103245279A (en) Inspection tester for symmetry degrees of axial parts
CN102506653A (en) Width measurement mechanism
CN105043216A (en) In-box spacing measuring device and method
CN104567785A (en) Profile detection tool
CN201397109Y (en) Cylinder body bearing seat lateral face position inspection device
CN203837641U (en) Measuring tool of X-axial symmetry degree of valve seat hole in valve body
CN107478136B (en) Device and method for measuring opening of oblique side surfaces at two ends of concave part in diesel engine frame
CN202329479U (en) Width measuring mechanism
CN207180580U (en) Advise in survey face
CN203824478U (en) Tester used for measuring height from gearbox synchronizer center to casing joint surface
CN108036747A (en) A kind of oil film thickness static demarcating equipment
CN211783223U (en) Micrometer for measuring pitch of holes
CN203464882U (en) Flat bottom hole and narrow groove depth measuring instrument

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
CP01 Change in the name or title of a patent holder
CP01 Change in the name or title of a patent holder

Address after: 230601 Anhui Province, Hefei City Industrial Park, the Peach Blossom Road No. 669

Patentee after: Anhui Jianghuai Automobile Group Limited by Share Ltd

Address before: 230601 Anhui Province, Hefei City Industrial Park, the Peach Blossom Road No. 669

Patentee before: Anhui Jianghuai Automotive Co., Ltd.