CN105650091A - Self-locking nut test fixture and nut fitting head used thereof - Google Patents
Self-locking nut test fixture and nut fitting head used thereof Download PDFInfo
- Publication number
- CN105650091A CN105650091A CN201610122928.6A CN201610122928A CN105650091A CN 105650091 A CN105650091 A CN 105650091A CN 201610122928 A CN201610122928 A CN 201610122928A CN 105650091 A CN105650091 A CN 105650091A
- Authority
- CN
- China
- Prior art keywords
- screw connection
- nut
- connection head
- self
- cock
- 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
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 58
- 230000005540 biological transmission Effects 0.000 claims abstract description 14
- 239000004677 Nylon Substances 0.000 abstract description 5
- 229920001778 nylon Polymers 0.000 abstract description 5
- 230000002093 peripheral effect Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 2
- 210000003371 toe Anatomy 0.000 description 2
- 238000003556 assay Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B37/00—Nuts or like thread-engaging members
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention relates to a self-locking nut test fixture and a nut fitting head used thereof. The self-locking nut test fixture comprises the nut fitting head and a transmission component, wherein the nut fitting head comprises a nut fitting head body; a nut fitting head connection structure used for being in transmission connection with a test machine is arranged on the nut fitting head body; a thread hole with an axis extending along a front-rear direction, and used for screwing a self-locking nut from front to rear for a locking test is arranged in the nut fitting head body; the nut fitting head connection structure is in transmission connection with the test machine; the thread hole in the nut fitting head body is used for screwing the self-locking nut; an internal thread of the thread hole is in threaded fit with an external thread of the self-locking nut, and a self-locking action is carried out through a nylon locking ring; and a torque is transferred to the self-locking nut by the transmission component, thus the locking test for the self-locking nut is carried out. The invention provides a test fixture for carrying out a novel locking test on the novel self-locking nut.
Description
Technical field
The present invention relates to a kind of self-locking nut test tool and nut screw connection head that this self-locking nut test tool uses.
Background technology
A kind of novel self-locking nut is as shown in Figure 1-2: include nut body, nut body offers the through hole that axis extends along the longitudinal direction, nut body includes outer peripheral face and sets threaded thread segment 1 and be integrally formed at the locking section of thread segment 1 rear end, the outer peripheral face of locking section is arranged with nylon lock ring 3, locking section has the flange 2 for axial restraint nylon lock ring 3 radially outward turned down, on the inner peripheral surface of through hole, circumferentially uniform intervals is provided with the force groove 4 extended along the longitudinal direction, the outer peripheral face of thread segment 1 is provided with screw thread, between the outside diameter size of nylon lock ring big footpath and path on thread segment. this type of Self-locking screw nut has certain particularity, is used in some specific occasions, for instance the securing member of the aero-engine being used as in aviation field. but needing its lock ability is tested after self-locking nut completes, this type of Self-locking screw nut is not carried out locking test by corresponding assay device at present.
Summary of the invention
It is an object of the invention to provide a kind of self-locking nut test tool that above-mentioned Self-locking screw nut is carried out locking test; Meanwhile, the present invention also aims to the nut screw connection head providing this self-locking nut test tool a kind of to use.
In the present invention, the technical scheme of a kind of self-locking nut test tool is: a kind of nut screw connection head, including nut screw connection head body, nut screw connection head body is provided with the nut screw connection head attachment structure for being in transmission connection with testing machine, nut screw connection head body is provided with the screwed hole for screwing in carry out locking test from front to back for self-locking nut that axis extends along the longitudinal direction.
Described nut screw connection head body is provided with stopping surface forward in the rear end of screwed hole, screwed hole internal whorl screws in the cock having axis to extend along the longitudinal direction, cock coordinates with stopping surface block, the front end face of cock moves backwards for block self-locking nut and tests datum level as one, and cock length in the longitudinal direction is less than the length of screwed hole.
Have escape on described nut screw connection head body in screwed hole rear end, described cock length in the longitudinal direction is more than the width of escape.
Be provided with pilot hole that is that axis extends along the longitudinal direction and that connect screwed hole on described nut screw connection head body in screwed hole rear end, the rear end of cock is provided with the lead coordinated that leads with pilot hole.
Being provided with for screwing in the force section within screwed hole in described cock, described force section is the interior square hole that the axis being arranged in cock extends along the longitudinal direction.
In the present invention, the technical scheme of a kind of nut screw connection head is: a kind of self-locking nut test tool, including the nut screw connection head for screwing in for self-locking nut with for transmitting the drive disk assembly of moment of torsion to self-locking nut, described nut screw connection head includes nut screw connection head body, nut screw connection head body is provided with the nut screw connection head attachment structure for being in transmission connection with testing machine, nut screw connection head body is provided with the screwed hole for screwing in carry out locking test from front to back for self-locking nut that axis extends along the longitudinal direction.
Described nut screw connection head body is provided with stopping surface forward in the rear end of screwed hole, screwed hole internal whorl screws in the cock having axis to extend along the longitudinal direction, cock coordinates with stopping surface block, the front end face of cock moves backwards for block self-locking nut and tests datum level as one, and cock length in the longitudinal direction is less than the length of screwed hole.
Have escape on described nut screw connection head body in screwed hole rear end, described cock length in the longitudinal direction is more than the width of escape.
Be provided with pilot hole that is that axis extends along the longitudinal direction and that connect screwed hole on described nut screw connection head body in screwed hole rear end, the rear end of cock is provided with the lead coordinated that leads with pilot hole.
Being provided with for screwing in the force section within screwed hole in described cock, described force section is the interior square hole that the axis being arranged in cock extends along the longitudinal direction.
The invention have the benefit that nut screw connection head attachment structure and testing machine are in transmission connection, screwed hole on nut screw connection head body is for screwing in for self-locking nut, the external screw thread threaded engagement of the female thread of screwed hole and self-locking nut, and carry out self-locking action by nylon lock ring, drive disk assembly transmits moment of torsion to self-locking nut, thus carrying out the locking test of self-locking nut, it is provided that a kind of test tool to the test of above-mentioned Self-locking screw nut locking.
Further, in process of the test, the existence of cock, the rear end face of the thread segment of self-locking nut coordinates with the front end face block of cock, and the rear end face of thread segment will not directly coordinate with the step block of the rear end of the screwed hole of nut screw connection head body, if the power screwed in process of the test is bigger, can be bigger to the step impulsive force of nut screw connection head body, along with the increase of test number (TN) can damage nut screw connection head body, and the thread segment that the setting of cock avoids self-locking nut directly directly contacts with the step of the screwed hole rear end of nut screw connection head body, and the increase of test number (TN) has only to when cock damages change cock, provide cost savings.
Further, existence due to the stopping surface on nut screw connection head body, the rear end face place of the screwed hole of nut screw connection head unavoidably also exists escape, without the length of cock or cock less than the width of escape, when experiment it cannot be guaranteed that have complete screw thread test section between self-locking nut and nut screw connection head body, affect the locking result of the test of self-locking nut.
Accompanying drawing explanation
Fig. 1 is the structural representation of self-locking nut in background of invention;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is the structural representation of the nut screw connection head in an embodiment of self-locking nut test tool in the present invention;
Fig. 4 is the Fig. 3 sectional view at A-A place;
Fig. 5 is the structural representation of the drive disk assembly of self-locking nut test tool;
Fig. 6 is the left view of Fig. 5;
Fig. 7 is the structural representation of nut screw connection head body;
Fig. 8 is the Fig. 7 partial enlarged drawing at I place;
Fig. 9 is the structural representation of cock;
Figure 10 is the left view of Fig. 9.
Detailed description of the invention
The embodiment of a kind of self-locking nut test tool is as shown in figs. 3-10, including the nut screw connection head 5 for screwing in for self-locking nut with for transmitting the drive disk assembly of moment of torsion to self-locking nut, nut screw connection head 5 includes nut screw connection head body, the outer surface of nut screw connection head body be for the hexagonal structure being in transmission connection in the sleeve with interior hexagonal hole of testing machine that is installed, nut screw connection head body is provided with the screwed hole 12 for screwing to carry out locking test for self-locking nut that axis extends along the longitudinal direction, nut screw connection head body is provided with stopping surface 16 forward in the rear end of screwed hole 12, on nut screw connection head body, the rear end face place in screwed hole 12 also exists escape 14, nut screw connection head body interior is provided with cock 6, cock 6 is connected with screwed hole 12 threaded engagement, cock 6 has for screwing in the force section within screwed hole 12, cock 6 length in the longitudinal direction less than screwed hole 12 length but more than the width of escape 14, cock 6 coordinates with stopping surface 16 block, the front end face of cock 6 moves backwards for block self-locking nut and tests datum level as one. nut screw connection head body is multidiameter structure, screwed hole 12 is arranged on the bigger diameter end of nut screw connection head body, the miner diameter end 11 of nut screw connection head body is provided with pilot hole 13 that is that axis extends along the longitudinal direction and that connect screwed hole 12, cock 6 is also multidiameter structure, the miner diameter end 15 of cock 6 constitutes the lead coordinated that leads with pilot hole 13, the bigger diameter end of cock 6 is suitable with screwed hole 12, and the force section of cock 6 is the interior square hole structure 7 that cock 6 is run through in front and back.
Drive disk assembly includes drive disk assembly body, the rear end of drive disk assembly body be provided with for the drive disk assembly attachment structure being in transmission connection on corresponding testing machine, drive disk assembly attachment structure include extending along the longitudinal direction for the outer square toes 9 by the chuck clamping on testing machine, the rear end of drive disk assembly body be provided with extend along the longitudinal direction for self-locking nut force groove 4 spline coordinate to transmit the driving key 10 of moment of torsion, in the present embodiment, the force groove of self-locking nut has 4, driving key 10 be 4 and along actuating device body outer peripheral face circumferential uniform intervals distribution, drive disk assembly body is multidiameter structure, driving key 10 is arranged on the bigger diameter end 8 of drive disk assembly body, bigger diameter end 8 is column structure, the miner diameter end of drive disk assembly body is outer square head structure 9.
In use, cock 6 is screwed in nut screw connection head body, one end of testing machine is installed and has the sleeve of interior hexagonal hole, the outer hexagonal structure in sleeve and nut screw connection head body peripheral face is in transmission connection, the sub-fraction of thread segment 1 front end of self-locking nut is screwed in the female thread 12 of threaded engagement head, the outer square toes 9 of the chuck clamping drive disk assembly of the other end of testing machine, driving key 10 on drive disk assembly coordinates with force groove 4 spline of self-locking nut to transmit moment of torsion to self-locking nut, thus carrying out the locking test of self-locking nut.
In other embodiments of the invention, the miner diameter end of nut screw connection head body can be foreign side's structure, for being in transmission connection with sleeve, is formed for realizing the nut screw connection head attachment structure that nut screw connection head and testing machine are in transmission connection; Nut screw connection head is originally internal can also be not provided with cock; Cock may not be multidiameter structure, it is possible to only includes and the threaded portion of screwed hole threaded engagement; Nut screw connection head attachment structure may not be outer square head structure, such as nut screw connection head attachment structure is the column structure for chuck clamping; Drive disk assembly attachment structure may not be outer square head structure, such as drive disk assembly attachment structure is the column structure for chuck clamping; The force section of cock may not be interior square hole, it is also possible to time be arranged at the projection with outer square structure on cock front end face or rear end face; Drive disk assembly may not be multidiameter shape, it is possible to for cylindrical structure; The quantity of driving key can be adjusted according to the quantity of the actual force groove of self-locking nut.
The embodiment of a kind of nut screw connection head is identical with the embodiment of the nut screw connection head in each embodiment of above-mentioned a kind of self-locking nut test tool, repeats no more herein.
Claims (10)
1. a nut screw connection head, it is characterized in that: include nut screw connection head body, nut screw connection head body is provided with the nut screw connection head attachment structure for being in transmission connection with testing machine, nut screw connection head body is provided with the screwed hole for screwing in carry out locking test from front to back for self-locking nut that axis extends along the longitudinal direction.
2. a kind of nut screw connection head according to claim 1, it is characterized in that: described nut screw connection head body is provided with stopping surface forward in the rear end of screwed hole, screwed hole internal whorl screws in the cock having axis to extend along the longitudinal direction, cock coordinates with stopping surface block, the front end face of cock moves backwards for block self-locking nut and tests datum level as one, and cock length in the longitudinal direction is less than the length of screwed hole.
3. a kind of nut screw connection head according to claim 2, it is characterised in that: have escape on described nut screw connection head body in screwed hole rear end, described cock length in the longitudinal direction is more than the width of escape.
4. a kind of nut screw connection head according to claim 2, it is characterized in that: be provided with pilot hole that is that axis extends along the longitudinal direction and that connect screwed hole on described nut screw connection head body in screwed hole rear end, the rear end of cock is provided with the lead coordinated that leads with pilot hole.
5. a kind of nut screw connection head according to any one of claim 2-4, it is characterised in that: being provided with for screwing in the force section within screwed hole in described cock, described force section is the interior square hole that the axis being arranged in cock extends along the longitudinal direction.
6. a self-locking nut test tool, it is characterized in that: include the nut screw connection head for screwing in for self-locking nut and for transmitting the drive disk assembly of moment of torsion to self-locking nut, described nut screw connection head includes nut screw connection head body, nut screw connection head body is provided with the nut screw connection head attachment structure for being in transmission connection with testing machine, nut screw connection head body is provided with the screwed hole for screwing in carry out locking test from front to back for self-locking nut that axis extends along the longitudinal direction.
7. a kind of self-locking nut test tool according to claim 6, it is characterized in that: described nut screw connection head body is provided with stopping surface forward in the rear end of screwed hole, screwed hole internal whorl screws in the cock having axis to extend along the longitudinal direction, cock coordinates with stopping surface block, the front end face of cock moves backwards for block self-locking nut and tests datum level as one, and cock length in the longitudinal direction is less than the length of screwed hole.
8. a kind of self-locking nut test tool according to claim 7, it is characterised in that: have escape on described nut screw connection head body in screwed hole rear end, described cock length in the longitudinal direction is more than the width of escape.
9. a kind of self-locking nut test tool according to claim 7, it is characterized in that: be provided with pilot hole that is that axis extends along the longitudinal direction and that connect screwed hole on described nut screw connection head body in screwed hole rear end, the rear end of cock is provided with the lead coordinated that leads with pilot hole.
10. a kind of self-locking nut test tool according to any one of claim 7-9, it is characterized in that: being provided with for screwing in the force section within screwed hole in described cock, described force section is the interior square hole that the axis being arranged in cock extends along the longitudinal direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610122928.6A CN105650091B (en) | 2016-03-04 | 2016-03-04 | A kind of self-locking nut test tool and its used nut cooperating head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610122928.6A CN105650091B (en) | 2016-03-04 | 2016-03-04 | A kind of self-locking nut test tool and its used nut cooperating head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105650091A true CN105650091A (en) | 2016-06-08 |
| CN105650091B CN105650091B (en) | 2017-11-10 |
Family
ID=56492071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610122928.6A Active CN105650091B (en) | 2016-03-04 | 2016-03-04 | A kind of self-locking nut test tool and its used nut cooperating head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105650091B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020023504A1 (en) * | 2000-07-21 | 2002-02-28 | John Austin | Torque indication device |
| TWI353441B (en) * | 2007-11-09 | 2011-12-01 | Nat Univ Chin Yi Technology | Torque test machine for an accurate nut |
| CN102735377A (en) * | 2012-07-11 | 2012-10-17 | 哈尔滨工程大学 | Dynamic pre-tightened piezoelectric type force sensor for projects |
| CN103149023A (en) * | 2013-03-18 | 2013-06-12 | 深圳市瑞格尔仪器有限公司 | Nut performance testing device and nut performance testing machine |
| CN203069308U (en) * | 2012-12-31 | 2013-07-17 | 浙江吉利汽车有限公司 | Sleeve for detecting strength of projection welding nut |
| CN104406726A (en) * | 2014-10-31 | 2015-03-11 | 北京宇航系统工程研究所 | Calibration apparatus for relation between pretightening force and pretightening moment, and calibration method thereof |
| CN104405751A (en) * | 2014-11-26 | 2015-03-11 | 河南航天精工制造有限公司 | External-threaded self-locking nut vibration test tool |
| CN204640023U (en) * | 2015-05-21 | 2015-09-16 | 河南航天精工制造有限公司 | A kind of nut experimental rig and use the testing machine of this nut experimental rig |
-
2016
- 2016-03-04 CN CN201610122928.6A patent/CN105650091B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020023504A1 (en) * | 2000-07-21 | 2002-02-28 | John Austin | Torque indication device |
| TWI353441B (en) * | 2007-11-09 | 2011-12-01 | Nat Univ Chin Yi Technology | Torque test machine for an accurate nut |
| CN102735377A (en) * | 2012-07-11 | 2012-10-17 | 哈尔滨工程大学 | Dynamic pre-tightened piezoelectric type force sensor for projects |
| CN203069308U (en) * | 2012-12-31 | 2013-07-17 | 浙江吉利汽车有限公司 | Sleeve for detecting strength of projection welding nut |
| CN103149023A (en) * | 2013-03-18 | 2013-06-12 | 深圳市瑞格尔仪器有限公司 | Nut performance testing device and nut performance testing machine |
| CN104406726A (en) * | 2014-10-31 | 2015-03-11 | 北京宇航系统工程研究所 | Calibration apparatus for relation between pretightening force and pretightening moment, and calibration method thereof |
| CN104405751A (en) * | 2014-11-26 | 2015-03-11 | 河南航天精工制造有限公司 | External-threaded self-locking nut vibration test tool |
| CN204640023U (en) * | 2015-05-21 | 2015-09-16 | 河南航天精工制造有限公司 | A kind of nut experimental rig and use the testing machine of this nut experimental rig |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105650091B (en) | 2017-11-10 |
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