CN108362416A - A kind of tool for detecting connecting rob bushing torsional moment - Google Patents
A kind of tool for detecting connecting rob bushing torsional moment Download PDFInfo
- Publication number
- CN108362416A CN108362416A CN201810106448.XA CN201810106448A CN108362416A CN 108362416 A CN108362416 A CN 108362416A CN 201810106448 A CN201810106448 A CN 201810106448A CN 108362416 A CN108362416 A CN 108362416A
- Authority
- CN
- China
- Prior art keywords
- mandrel
- tool
- torsional moment
- bushing
- torquemeter
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0028—Force sensors associated with force applying means
- G01L5/0042—Force sensors associated with force applying means applying a torque
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/24—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for determining value of torque or twisting moment for tightening a nut or other member which is similarly stressed
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/02—Details or accessories of testing apparatus
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The present invention relates to a kind of tools for detecting connecting rob bushing torsional moment, belong to connecting rob bushing torsional moment cubing technical field.It is a kind of for detecting the tool of connecting rob bushing torsional moment, include from can with and the built-up mandrel that is formed of the mandrel one and mandrel two that dismount and torquemeter and preset arm bar；Built-up mandrel one end connect the other end with torquemeter and is connect with preset arm bar；Built-up mandrel, which passes through, to be arranged the bushing in interlinking lever end and is connect with bushing.The detection instrument of the present invention passes through a preset torque on tool, solve the problems, such as that torquemeter detection range is insufficient, the connection with preset arm bar and torquemeter can be conveniently realized by using split type built-up mandrel, performance requirement of the detection experiment to tool may be implemented, moreover it is possible to facilitate the handling of detection instrument.The configuration of the present invention is simple, easy disassembly are easy to carry out operation measurement, can expand the range of torquemeter by applying preset torque, have good performance.
Description
Technical field
The present invention relates to a kind of tools for detecting connecting rob bushing torsional moment, belong to connecting rob bushing torsional moment cubing
Technical field.
Background technology
Within the engine there are many various irregular part, these parts are also required to carry out a series of detection up to standard
After could use.The case where being rotated at work there are lining of connecting rod small end in certain type reseach of engine stage, in order to analyze
The reason of problem occurs simultaneously provides data support for scientific research, needs to carry out twisting resistance experiment to lining of connecting rod small end.However, should
The torsional moment of type lining of connecting rod small end of engine has had exceeded the maximum detection range of general torquemeter, and there are currently no
With the detection instrument of Mr. Yu's type lining of connecting rod small end of engine torsional moment.
Invention content
The object of the present invention is to provide a kind of works simple in structure, easy to use for detecting connecting rob bushing torsional moment
Tool.
To achieve the goals above, the technical solution adopted by the present invention is：
It is a kind of for detecting the tool of connecting rob bushing torsional moment, include from can with and the mandrel one and mandrel dimorphism that dismount
At built-up mandrel and torquemeter and preset arm bar；Built-up mandrel one end connect the other end and preset arm bar with torquemeter
Connection；Built-up mandrel, which passes through, to be arranged the bushing in interlinking lever end and is connect with bushing.
Technical solution of the present invention further improvement lies in that：Mandrel one and mandrel two are located by connecting and are made using joinery and its construction
With connection bolt fastening.
Technical solution of the present invention further improvement lies in that：The four directions connected for same torquemeter is arranged in one end of mandrel one
Tongue-and-groove is arranged in the end face of the head other end；One end setting of mandrel two is with the end face setting of the tenon other end of tongue and groove fit for same
The threaded hole of preset arm bar connection；Through-hole is arranged along axis in the center of mandrel two, and the center of the end face of tongue-and-groove is arranged in mandrel one
It is threaded blind hole.
Technical solution of the present invention further improvement lies in that：The four directions connected for same torquemeter is arranged in one end of mandrel one
Tenon is arranged in the end face of the head other end；One end setting of mandrel two is with the end face setting of the tongue-and-groove other end of tongue and groove fit for same
The threaded hole of preset arm bar connection；Through-hole is arranged along axis in the center of mandrel two, and the center of the end face of tongue-and-groove is arranged in mandrel one
It is threaded blind hole.
Technical solution of the present invention further improvement lies in that：Groove, the side of mandrel one and mandrel two is arranged in the end face of bushing
Several pin holes for across bayonet lock are arranged in face；The bayonet lock passes through pin hole and is caught in groove.
Technical solution of the present invention further improvement lies in that：Preset arm bar is plate.
Technical solution of the present invention further improvement lies in that：Preset arm bar is rectangle steel plate.
Technical solution of the present invention further improvement lies in that：It is equally distributed that several annulars are arranged in one end of preset arm bar
Through-hole.
Technical solution of the present invention further improvement lies in that：It is equally distributed that several annulars are arranged in one end of preset arm bar
Through-hole, several triangular grooves for hanging weight of setting of the other end.
Technical solution of the present invention further improvement lies in that：Built-up mandrel is clearance fit with bushing.
By adopting the above-described technical solution, the technique effect that the present invention obtains has：
The detection instrument of the present invention solves torquemeter detection range is insufficient and ask by a preset torque on tool
Topic.Present invention employs split type built-up mandrel, the connection with preset arm bar and torquemeter can be conveniently realized, to
It realizes performance requirement of the detection experiment to detection instrument, while the handling of detection instrument can also be facilitated.
Built-up mandrel in the present invention has been divided into mandrel one and mandrel two, sets mandrel one and mandrel two to joinery and its construction
It is combined connection positioning, this is simple in structure easy to implement, and accurate positioning is connected firmly.
Bushing is fixedly connected with built-up mandrel by the way that bayonet lock realization is interim in the present invention, operation when being convenient for measuring.
The configuration of the present invention is simple, easy disassembly are easy to carry out operation measurement, can expand torque by applying preset torque
The range of instrument has good performance.
Description of the drawings
Fig. 1 is stereoscopic schematic diagram of the present invention；
Fig. 2 is the stereoscopic schematic diagram at another visual angle of the invention；
Fig. 3 is a kind of situation schematic diagram under built-up mandrel decomposing state of the present invention；
Fig. 4 is another situation schematic diagram under built-up mandrel decomposing state of the present invention；
Fig. 5 is bushing schematic diagram of the present invention；
Wherein, 1, built-up mandrel, 1-1, mandrel one, 1-2, mandrel two, 2, torquemeter, 3, preset arm bar, 3-1, triangle are recessed
Slot, 4, bushing, 4-1, groove, 5, square head, 6, tongue-and-groove, 7, tenon, 8, connection bolt, 9, pin hole, 10, bayonet lock, 11, even
Bar, 12, handle.
Specific implementation mode
Below in conjunction with the accompanying drawings and specific embodiment is described in further details the present invention：
The invention discloses a kind of tools for detecting connecting rob bushing torsional moment, which is in order to engine connecting rod
What the torsional moment of the bushing of end measured, torsional moment of the bushing when just rotating specifically is measured, into
And the reason of rotating to bushing, is analyzed.Here is specific embodiment：
As shown in Fig. 1, Fig. 5, the end set engine link 11 of bushing 4.There is circle in the end set of connecting rod 11 first
The connector of shape, connector are provided centrally with circular hole, and bushing 4 is just arranged in circular hole.Need to measure is that bushing occurs to turn
Torque when dynamic.The present invention design principle be：A torque is pre-set for survey tool using preset arm bar 3, so
After reuse torquemeter 2 and continue to torque to part to be measured and rotate, read after the data of torquemeter 2 with pre-set power
Square is added as peak torque.
The tool of the present invention for measuring torsional moment, as shown in Figure 1 and Figure 2, including built-up mandrel 1 and is connected to
The preset arm bar 3 and torquemeter 2 at 1 both ends of built-up mandrel.Built-up mandrel 1 therein is used for being attached with bushing 4, combines the heart
Axis 1 drives bushing 4 to rotate.The survey tool is connect with bushing 4 for convenience, built-up mandrel 1 is set as removable two
Part, i.e. two 1-2 of one 1-1 of mandrel and mandrel.In use, one 1-1 of mandrel and two 1-2 of mandrel are inserted from the both ends of bushing 4 respectively
Assembling forms built-up mandrel 1 after entering.Common, built-up mandrel 1 is set as clearance fit with bushing 4, while needing that the heart will be combined
Axis 1 is connect with bushing 4.
In specific implementation process, one 1-1 of mandrel and two 1-2 of mandrel are located by connecting using joinery and its construction, and
It is fastened using connection bolt 8.Specifically two ways may be used in setting to one 1-1 of mandrel and two 1-2 of mandrel.One is, such as Fig. 3
Shown in structure, the other end of the square head 5 that setting is connected for same torquemeter 2 in one end of one 1-1 of mandrel in one 1-1 of mandrel
End face be arranged tongue-and-groove 6.Meanwhile the tenon 7 coordinated with tongue-and-groove 6 is set in the another of two 1-2 of mandrel in one end of two 1-2 of mandrel
The threaded hole for being connected with preset arm bar 3 is arranged in the end face at end.It also needs to logical along axis setting at the center of two 1-2 of mandrel
Hole, while in the centrally disposed tapped blind hole of the end face of mandrel one 1-1 setting tongue-and-grooves 6.When assembling, coordinate in tongue-and-groove 6 and tenon 7
Bolt will be connected after good to be inserted into from the end face that tenon 7 is not arranged of two 1-2 of mandrel and be threadedly coupled with tapped blind hole, will combine the heart
Axis 1 is connected and fixed.Another set-up mode is structure as shown in Figure 4, and in one end of one 1-1 of mandrel, setting is for same
Tenon 7 is arranged in the end face of the other end of one 1-1 of mandrel in the square head 5 that torquemeter 2 connects.Meanwhile in one end of two 1-2 of mandrel
It is arranged and the threaded hole for being connect with preset arm bar 3 is set in the end face of the other end of two 1-2 of mandrel with tongue-and-groove 6.It also needs to
Through-hole is set along axis at the center of two 1-2 of mandrel, while in the centrally disposed screw thread of the end face of mandrel one 1-1 setting tongue-and-grooves 6
Blind hole.When assembling, after tongue-and-groove 6 is worked good with tenon 7 will connect bolt inserts from the end face that tongue-and-groove 6 is not arranged of two 1-2 of mandrel
Enter and be threadedly coupled with tapped blind hole, built-up mandrel 1 is connected and fixed.The combination of above two structure can realize group
Close the assembling of mandrel, the preferential selection setting of the first.Mandrel one and mandrel two are carried out group by the present invention using joinery and its construction
Built-up mandrel is formed after closing connection positioning, this is simple in structure easy to implement, and accurate positioning is connected firmly.
In order to which built-up mandrel 1 can easily be connect with bushing 4 in the present invention, it is provided in the end face of bushing 4 several
Groove 4-1, while the side of two 1-2 of one 1-1 of mandrel and mandrel be arranged it is several for across bayonet lock 10 pin holes 9.Institute
The through-hole that pin hole 9 is the axis perpendicular to built-up mandrel 1 is stated, the groove 4-1 is circular groove.Bayonet lock 10 is passed through into card
Pin hole 9 and it is caught in the connection that bushing 4 and built-up mandrel 1 can be realized in groove 4-1.It is specific as shown in Figure 1.The structure can
Realize that bushing is fixedly connected with the interim of built-up mandrel, operation when being convenient for measuring can improve measurement efficiency.
Preset arm bar 3 in the present invention is plate, and common is rectangle steel plate, and the length of preset arm bar 3 is 1.2
~1.8m.As shown in Figure 1 and Figure 2, several equally distributed through-holes of annular, preset arm bar are set in one end of preset arm bar 3
Through-hole on 3 is bolted for the use of same built-up mandrel 1.In use, by 3 one end of preset arm bar and built-up mandrel 1
Using being bolted, the other end hangs weight to apply preset torque.Specific in use, the suspension of weight for convenience,
Several triangular groove 3-1 for hanging weight can be set on preset arm bar 3.It, will using rope when hanging weight
It is placed in triangular groove 3-1 after weight binding.The setting can ensure the stabilization of weight, pre- in measurement process to ensure
The stabilization for setting torque is accurate.
The present invention use process is as follows, first by one 1-1 of mandrel and two 1-2 of mandrel respectively from the both ends of bushing 4 be inserted into,
And tenon 7 and tongue-and-groove 6 is made to match.The pin card that will stumble is in the groove 4-1 at 4 both ends of bushing to make bushing 4 connect with built-up mandrel 1
It is connected together, is used in combination connection bolt 8 to connect one 1-1 of mandrel with two 1-2 of mandrel and tightens.Then, connecting rod 11 is vertically fixed, it will
Preset arm bar 3 is fixed on the end face of mandrel two and is fastened using three bolts, keeps preset arm bar holding horizontal, preset
Triangular groove 3-1 is interior fortunately after arm bar 3 fixes hangs the preset torque of known weight.It will be in the another of one 1-1 of mandrel
Torquemeter is installed in one end by square head 5, the shank of torquemeter is entangled with box spanner, and slowly apply turning moment, works as lining
The moment rotated is covered, torquemeter record is maximum to measure torque, and detection torque is added as to the torsion of bushing with preset torque
Torque.
It is insufficient to solve torquemeter detection range by a preset torque on tool for the detection instrument of the present invention
Problem may be implemented performance requirement of the detection experiment to tool by using split type built-up mandrel, and can facilitate detection instrument
Handling.
The present invention is suitable for the measurement of the torsional moment of the bushing of engine link end, between after application preset torque
What is connect expands the range of torquemeter, can realize the accurate measurement to bushing torsional moment.
The configuration of the present invention is simple, easy disassembly are easy to carry out operation measurement, have good performance.
Claims (10)
1. a kind of tool for detecting connecting rob bushing torsional moment, it is characterised in that：Include from can with and the heart that dismounts
Axis one（1-1）With mandrel two（1-2）The built-up mandrel of formation（1）And torquemeter（2）With preset arm bar（3）；Built-up mandrel
（1）One end and torquemeter（2）Connect the other end and preset arm bar（3）Connection；Built-up mandrel（1）Across setting in connecting rod（11）
The bushing of end（4）And and bushing（4）Connection.
2. a kind of tool for detecting connecting rob bushing torsional moment according to claim 1, it is characterised in that：Mandrel one
（1-1）With mandrel two（1-2）It is located by connecting using joinery and its construction and uses connection bolt（8）Fastening.
3. a kind of tool for detecting connecting rob bushing torsional moment according to claim 2, it is characterised in that：Mandrel one
（1-1）One end setting be used for same torquemeter（2）The square head of connection（5）Tongue-and-groove is arranged in the end face of the other end（6）；Mandrel two
（1-2）One end setting and tongue-and-groove（6）The tenon of cooperation（7）The end face of the other end is arranged for preset arm bar（3）Connection
Threaded hole；Mandrel two（1-2）Center along axis be arranged through-hole, mandrel one（1-1）Tongue-and-groove is set（6）The center of end face set
Set tapped blind hole.
4. a kind of tool for detecting connecting rob bushing torsional moment according to claim 2, it is characterised in that：Mandrel one
（1-1）One end setting be used for same torquemeter（2）The square head of connection（5）Tenon is arranged in the end face of the other end（7）；Mandrel two
（1-2）One end setting and tongue-and-groove（6）The end face of the other end is arranged for preset arm bar（3）The threaded hole of connection；Mandrel
Two（1-2）Center along axis be arranged through-hole, mandrel one（1-1）Tongue-and-groove is set（6）End face centrally disposed tapped blind hole.
5. according to a kind of tool for detecting connecting rob bushing torsional moment of claim 2~4 any one of them, feature exists
In：Bushing（4）End face be arranged groove（4-1）, mandrel one（1-1）With mandrel two（1-2）Side setting it is several for across
Bayonet lock（10）Pin hole（9）；The bayonet lock（10）Across pin hole（9）And it is caught in groove（4-1）It is interior.
6. a kind of tool for detecting connecting rob bushing torsional moment according to claim 1, it is characterised in that：Preset force
Armed lever（3）For plate.
7. a kind of tool for detecting connecting rob bushing torsional moment according to claim 6, it is characterised in that：Preset force
Armed lever（3）For rectangle steel plate.
8. a kind of tool for detecting connecting rob bushing torsional moment of according to claim 6 or 7 any one of them, feature exist
In：Preset arm bar（3）One end several equally distributed through-holes of annular are set.
9. a kind of tool for detecting connecting rob bushing torsional moment according to claim 8, it is characterised in that：Preset force
Armed lever（3）One end several equally distributed through-holes of annular, several triangles for being used to hang weight of setting of the other end are set
Groove（3-1）.
10. a kind of tool for detecting connecting rob bushing torsional moment according to claim 1, it is characterised in that：Combination
Mandrel（1）With bushing（4）For clearance fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810106448.XA CN108362416A (en) | 2018-02-02 | 2018-02-02 | A kind of tool for detecting connecting rob bushing torsional moment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810106448.XA CN108362416A (en) | 2018-02-02 | 2018-02-02 | A kind of tool for detecting connecting rob bushing torsional moment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108362416A true CN108362416A (en) | 2018-08-03 |
Family
ID=63004151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810106448.XA Pending CN108362416A (en) | 2018-02-02 | 2018-02-02 | A kind of tool for detecting connecting rob bushing torsional moment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108362416A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109211450A (en) * | 2018-08-31 | 2019-01-15 | 西北工业大学 | A kind of torsional spring plate torque-measuring apparatus and torque measuring method |
| CN109341914A (en) * | 2018-11-27 | 2019-02-15 | 东南大学 | A kind of turning moment test device |
| CN111397790A (en) * | 2020-04-08 | 2020-07-10 | 承德石油高等专科学校 | Connecting rod small end bush limit torque detection device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201177556Y (en) * | 2008-04-08 | 2009-01-07 | 株洲时代新材料科技股份有限公司 | Lining torsion test clamping device |
| CN101482447A (en) * | 2008-12-31 | 2009-07-15 | 奇瑞汽车股份有限公司 | Rubber bushing torsion test apparatus |
| CN201425532Y (en) * | 2009-05-19 | 2010-03-17 | 天津市天发重型水电设备制造有限公司 | Device for detecting torque values of mechanical transmission |
| CN201464099U (en) * | 2009-09-04 | 2010-05-12 | 重庆长安汽车股份有限公司 | Measurement device for engine timing loosening torque |
| CN202420833U (en) * | 2011-12-15 | 2012-09-05 | 浙江吉利汽车研究院有限公司 | Novel testing device for torsional rigidity in X direction and Y direction of lining |
| CN204807405U (en) * | 2015-07-03 | 2015-11-25 | 建新赵氏集团有限公司 | Bush class torsion test frock |
| CN107179191A (en) * | 2017-05-16 | 2017-09-19 | 江苏明珠试验机械有限公司 | Bushing reverse torsion machine |
-
2018
- 2018-02-02 CN CN201810106448.XA patent/CN108362416A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201177556Y (en) * | 2008-04-08 | 2009-01-07 | 株洲时代新材料科技股份有限公司 | Lining torsion test clamping device |
| CN101482447A (en) * | 2008-12-31 | 2009-07-15 | 奇瑞汽车股份有限公司 | Rubber bushing torsion test apparatus |
| CN201425532Y (en) * | 2009-05-19 | 2010-03-17 | 天津市天发重型水电设备制造有限公司 | Device for detecting torque values of mechanical transmission |
| CN201464099U (en) * | 2009-09-04 | 2010-05-12 | 重庆长安汽车股份有限公司 | Measurement device for engine timing loosening torque |
| CN202420833U (en) * | 2011-12-15 | 2012-09-05 | 浙江吉利汽车研究院有限公司 | Novel testing device for torsional rigidity in X direction and Y direction of lining |
| CN204807405U (en) * | 2015-07-03 | 2015-11-25 | 建新赵氏集团有限公司 | Bush class torsion test frock |
| CN107179191A (en) * | 2017-05-16 | 2017-09-19 | 江苏明珠试验机械有限公司 | Bushing reverse torsion machine |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109211450A (en) * | 2018-08-31 | 2019-01-15 | 西北工业大学 | A kind of torsional spring plate torque-measuring apparatus and torque measuring method |
| CN109341914A (en) * | 2018-11-27 | 2019-02-15 | 东南大学 | A kind of turning moment test device |
| CN111397790A (en) * | 2020-04-08 | 2020-07-10 | 承德石油高等专科学校 | Connecting rod small end bush limit torque detection device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108362416A (en) | A kind of tool for detecting connecting rob bushing torsional moment | |
| CN108709793A (en) | Loading device and its method for Bending-Twist Vibrations fatigue test | |
| CN208872502U (en) | Loosening test device is bolted under a kind of vibration environment | |
| CN208155713U (en) | Loading device for Bending-Twist Vibrations fatigue test | |
| CN106501075B (en) | A kind of electric armour clamp wear test fixture and electric armour clamp abrasion tester | |
| CN103174708A (en) | Fast locking and connecting device | |
| CN202735158U (en) | Tensile strength detecting clamp of double thread screw | |
| CN201960522U (en) | Pulling tool for internal-thread taper pin | |
| CN208310258U (en) | A kind of construction accurate wrap attachment of building a wall | |
| CN215114956U (en) | Motor power testing device | |
| CN109612866A (en) | The experimental provision and its experimental method of force on PDC cutter measurement | |
| CN206488992U (en) | A kind of self-drilling type anchor system nut tension test frock | |
| CN207570908U (en) | A kind of double anchor tensile testing systems | |
| CN104390737B (en) | Screwdriver slot torque test method of fastener and test device for implementing the method | |
| CN103234817A (en) | Detachable and reusable clamping apparatus for tensile test of fiber-reinforced resin based composite mandril | |
| CN204784106U (en) | Lock washer of moment is screwed up in restriction | |
| CN207212856U (en) | Angle adjustable four-way | |
| CN207318235U (en) | One kind is glued aluminium honeycomb sandwich construction front built-in fitting pull-off test fixture | |
| CN210442014U (en) | High-strength bolt axial force and torque composite testing machine | |
| CN202212793U (en) | Special stationary fixture for crankcase of compressor | |
| CN205380295U (en) | Rod positioning jig | |
| CN104009416A (en) | Large-span telescopic universal tower head fixture | |
| CN102029590A (en) | Pull-up tool for taper pin with internal threads | |
| CN210046107U (en) | Drill bit connecting structure for tapping drilling machine | |
| CN209166997U (en) | A kind of welding detection fixture of band logical hole workpiece |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180803 |