CN104390737B - Screwdriver slot torque test method of fastener and test device for implementing the method - Google Patents

Screwdriver slot torque test method of fastener and test device for implementing the method Download PDF

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Publication number
CN104390737B
CN104390737B CN201410687006.0A CN201410687006A CN104390737B CN 104390737 B CN104390737 B CN 104390737B CN 201410687006 A CN201410687006 A CN 201410687006A CN 104390737 B CN104390737 B CN 104390737B
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China
Prior art keywords
driver
securing member
measured
torsion
torque
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CN104390737A (en
Inventor
高学敏
李文生
刘海涛
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Henan Aerospace Precision Machining Co Ltd
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Henan Aerospace Precision Machining Co Ltd
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Abstract

The invention discloses a screwdriver slot torque test method of fastener and a test device for implementing the method. The butt joint of a to-be-tested fastener and a screwdriver is proceeded in a horizontal direction; and loading of an axial load is implemented by the relative compression between the to-be-tested fastener and a base where the screwdriver is installed; loading of a torque load is implemented under the condition that one of the fastener and the screwdriver is kept in standstill locking, whereas the other one applies the torque load upwards; therefore the screwdriver or the to-be-tested fastener cannot move relative to the base during the process of loading the axial load, that is to say, fit clearance cannot occur among the screwdriver, the to-be-tested fastener and the base, thereby preventing the rotated screwdriver and/or the to-be-tested fastener from deflection during the process of loading the torque load, and increasing the coaxiality between the screwdriver and the to-be-tested fastener during the whole torque test process.

Description

The driver groove torsion-testing method of securing member and the detection means implementing the method
Technical field
The present invention relates to a kind of driver groove torsion-testing method of securing member and the detection means implementing the method.
Background technology
At present, in Investment in fastener industry, the driver groove of securing member(As the outer-hexagonal of bolt head, interior hexagonal, cross recess and Word groove etc.)Torsion-testing when product an important indicator, the high lock spiral shell frequently using especially in field of aerospace Bolt, high locked bolts are a kind of securing members of special construction, and it is connected to the high lock that Closely locking nut is formed guarantees excellent machine On the premise of tool performance and service behaviour, have that lightweight, small volume, anti-loose ability are high, anti-fatigue performance is good, efficiency of assembling is high Feature, and can achieve efficient one side tighten operation.As depicted in figs. 1 and 2, this high locked bolts includes bolt body 100, spiral shell The head of bolt body 100 is provided with discoid cap body 101, the end face of the tail end of bolt body 100 offers and is coaxially disposed The driver groove 102 of interior six modes, high driver groove 102 if the allowable torque not reaching needs requires, in use High locked bolts will appear from loosening situation, causes bolt connection to lose efficacy;If beyond licensed torque demand, used Middle high locked bolts may be twisted off, and bolt connection also can be made to lose efficacy, and this driver groove 102 is likely to be broken, and makes high lock spiral shell Bolt surface unsightly, and produces certain air drag.
Chinese patent literature 201220298438.9 discloses a kind of securing member torque tester, including column, base, Weights, torque tube, scroll chuck, support arm and threaded screw rod, column is fixed on base, and torque tube is fixedly set in vertical On post, support arm is arranged on column top, and threaded screw rod is sleeved on support arm, and the upper end of threaded screw rod is fixed with positioning hand Handle, the bottom thread of the low bar of screw thread connects torque tube fixed seat, and torque tube is flexibly connected with torque tube fixed seat, torque tube upper Portion is provided with moment of torsion conversion head, and the bottom of torque tube is provided with crossover sub, and scroll chuck is arranged on base by base cushion block, Scroll chuck is located at the underface of torque tube, and weights are arranged on the top of torque tube, when using, by detected bolt It is fixed on scroll chuck, crossover sub is equivalent to spanner, apply required axial load by weights, finally lead to Cross torque wrench driving torque conversion head to obtain required torsional load, but in order to ensure that torque tube can be smoothly by counterweight The gravity of counterweight itself is loaded on detected bolt as axial load, and the axis hole between torque tube and torque tube fixed seat is joined Conjunction mode should coordinate for gap, when so applying torsional load by torque tube on detected bolt again, outside torque rod Between the wall surface of the hole of the mating holes on side face and torque rod fixed seat, fit clearance can make torque tube radially wobble, so that moment of torsion Bar, detected axiality between bolt and scroll chuck can not reach requirement, be so applied to detected spiral shell by torque tube Axial load on bolt and torsional load there will be larger deviation, cause the torsion-testing precision of driver groove to reduce.Meanwhile, it is subject to The own wt of torque tube limits, and counterweight will be greater than setting value by the axial load that torque tube is applied on detected bolt; Limited by torque wrench itself precision, be there is also larger between the torsional load detected by torque wrench and actual loaded value Deviation.
Content of the invention
It is an object of the invention to provide a kind of improve rotation by the axiality improving between driver and detected securing member The driver groove torsion-testing method of the securing member of tool groove torsion-testing precision, additionally provides one kind simultaneously and is exclusively used in implementing this fastening The detection means of the driver groove torsion-testing method of part.
In order to realize object above, in the present invention, the technical scheme of the driver groove torsion-testing method of securing member is as follows:
The driver groove torsion-testing method of securing member, comprises the following steps:
Step one, driver and securing member to be measured are coaxial docking in the horizontal direction, the driver groove of securing member to be measured and driver The cooperation of spin-ended sleeve, and securing member to be measured and driver are spacing respectively in axial direction is assemblied in two pedestals that can move axially relatively On, securing member to be measured and driver can be around axially opposing rotations;
Step 2, applies opposite thrust to two pedestals, and described thrust is securing member to be measured and driver compresses in opposite directions Axial load, and measure the size of described thrust;
Step 3, keeps in securing member and driver one by the case of rotation stop, applying torque load to another on, and The size of gauged torque load.
Pedestal residing for securing member to be measured in step one is fixed seat, and the pedestal residing for driver is can be relatively fixed seat axially to move Dynamic sliding seat;In step 2, thrust acts in sliding seat.
In step one, pedestal residing for securing member to be measured is provided with for driving the moment of torsion of fastener rotation to be measured to input dress Put, driver is spin-ended to be assemblied in residing pedestal and exist, and is provided with application torque metering device on pedestal residing for driver;In step 3, lead to Cross moment of torsion input unit to securing member input torque load to be measured, and pass through application torque metering device gauged torque load.
Moment of torsion input unit is the reducer arrangement being in transmission connection with motor.
The technical scheme of the detection means of the present invention is as follows:
Detection means, including support and thereon in the horizontal direction relative to assembling two pedestals, in two pedestals at least one It is assemblied on pedestal along relative direction guiding movement, the opposite side of two pedestals is respectively equipped with for driver and the coaxial phase of securing member to be measured To the driver clamping portion of spacing vertically clamping and securing member clamping portion, driver clamping portion and/or securing member clamping portion set Have for relatively rotating, to driver and securing member to be measured, the moment of torsion loading structure that direction loads torque load.
Detection means according to claim 5 it is characterised in that in two pedestals one be fixed on consolidating on support Reservation, another be the sliding seat being assemblied on support along relative direction guiding movement.
Axial metering device for measuring and transmitting axial loading force is connected with sliding seat.
Axial metering device is tensiometer, and one end of tensiometer is connected in sliding seat, the other end is connected to by drawstring On the vertical counterweight overhanging.
Moment of torsion loading structure is on one in driver clamping portion and securing member clamping portion, and driver clamping portion and securing member fill In folder portion, another is provided with the application torque metering device for detection gauged torque magnitude of load.
Moment of torsion loading structure is the deceleration device of the motor-driven for driving the rotation of residing clamping portion.
In the present invention, the docking of securing member to be measured and driver is carried out in the horizontal direction, and the loading of axial load is by treating Survey being pressed against between the pedestal residing for securing member and driver to carry out, the loading of torque load is then by keeping securing member Applied torque load in the case of rotation stop, on another with one in driver to carry out, so carried out axially loaded mistake Cheng Zhong, driver or securing member to be measured will not relative movement and residing pedestal between, that is, will not be with institute in driver and securing member to be measured Between place's pedestal, fit clearance occurs, avoiding problems during loading torque load, the driver that rotated and/or to be measured Securing member will not the phenomenon of beat on residing pedestal, improves driver and securing member to be measured during whole torsion-testing Between axiality, with ensure the axial load between driver and securing member to be measured and torque load can obtain accurately plus Carry, thus by raising driver and detected securing member between axiality and improve driver groove torsion-testing precision it is ensured that The driver groove torsion-testing of securing member is more accurate.
Brief description
Fig. 1 is the structural representation of high locked bolts in prior art;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is the structural representation of detection means in embodiments of the invention;
Fig. 4 is the structural representation of driver in Fig. 3;
Fig. 5 is the top view of Fig. 4.
Specific embodiment
The embodiment of the driver groove torsion-testing method of securing member in the present invention:The method is a kind of in applying standard Carry out the method for testing of the high locked bolts driver groove moment of torsion of driver groove torque measurement under axial force environment, comprise the following steps:
Step one, driver and securing member to be measured are coaxial docking in the horizontal direction, the driver groove of securing member to be measured and driver The cooperation of spin-ended sleeve, and securing member to be measured vertically spacing clamping in the fixed seat with motor-driven deceleration device, rotation Can with respect to the fixed seat vertically sliding seat with application torque metering device of guiding movement in treating vertically by spacing clamping for tool Survey securing member and driver can be around axially opposing rotation in fixed seat and sliding seat;
Step 2, makes sliding seat move towards fixed seat, described thrust by applying thrust in sliding seat For the axial load of the opposite compression of securing member to be measured and driver, and measure the size of described thrust;
Step 3, keeps driver by the case of rotation stop, applies torque load by deceleration device on securing member to be measured, And the size of gauged torque load.
In the above-described embodiments, securing member to be measured is in fixed seat, and driver is in sliding seat, in other embodiments, treats Survey securing member can also be in sliding seat, and corresponding driver is in fixed seat;Or securing member to be measured and driver are all located In sliding seat, when carrying out axial load loading, carry out axle by mutually opposing thrust is applied on two sliding seat Loading to load.
In the above-described embodiments, in the loading procedure of torque load, securing member to be measured is driving link, in other embodiments, Torque load can also be loaded by driver, or rotate simultaneously driver and securing member to be measured come to carry out torque load plus Carry.
From above-described embodiment, in the present invention, driver groove torsion-testing method can be implemented as follows:
Step one, driver and securing member to be measured are coaxial docking in the horizontal direction, the driver groove of securing member to be measured and driver The cooperation of spin-ended sleeve, and securing member to be measured and driver are spacing respectively in axial direction is assemblied in two pedestals that can move axially relatively On, securing member to be measured and driver can be around axially opposing rotations;
Step 2, applies opposite thrust to two pedestals, and described thrust is securing member to be measured and driver compresses in opposite directions Axial load, and measure the size of described thrust;
Step 3, keeps in securing member and driver one by the case of rotation stop, applying torque load to another on, and The size of gauged torque load.
The embodiment of the detection means of the present invention:As described in Fig. 3 to Fig. 5, this detection means is a kind of for applying mark Fiducial axis carries out the high locked bolts 9 driver groove torsional moment test device of driver groove torque measurement under force environment, mainly by counterweight 1, Right fixed pulley 14, power switch 3, sensor device 4, determine scroll chuck 5, driver 6, digital display type pull and push dynamometer 7, guide rail 8, High locked bolts 9, computer monitor 10, dynamic scroll chuck 11, reducer arrangement 12, decelerator switches 13, left fixed pulley 2, Device Host cabinet 15 is constituted.
Device Host cabinet 15, computer monitor 10 and power switch 3 are each attached on support, and in equipment master on support It is provided with horizontal-extending workbench between rack 15 and computer monitor 10.
Reducer arrangement 12 and decelerator switches 13 are assemblied in fixing fixed seat on the left of workbench, reducer arrangement 12 Be in transmission connection on the motor of torsion tester, and the right side of fixed seat be provided be in transmission connection defeated in reducer arrangement 12 Dynamic main shaft on shaft, dynamic main shaft connects dynamic scroll chuck 11 to overhanging, the projecting end of dynamic main shaft, and dynamic scroll chuck 11 is to pass through The mode being fixedly clamped supplies the securing member clamping portion of the head spacing clamping vertically of high locked bolts 9, corresponding reducer arrangement 12 is to rotate, by driving dynamic scroll chuck 11, the moment of torsion loading structure driving high locked bolts 9 to rotate with respect to driver 6.
Sensor device 4 is assemblied in by guide rail 8 in left-right direction guiding movement assembling sliding seat on the table, It is oppositely arranged about sliding seat and fixed seat, the left end of sliding seat overhangs to the left to be connected to and determines main shaft on sensor device 4, Scroll chuck 5 is determined in the projecting end connection determining main shaft, and determining scroll chuck 5 is the head edge supplying driver 6 by way of being fixedly clamped The driver 6 clamping portion of axial limiting clamping, and it is coaxially relative with dynamic scroll chuck 11, so that filling on both to determine scroll chuck 5 The high locked bolts 9 joined are coaxially relative with driver 6.
The left side of sliding seat connects digital display type pull and push dynamometer 7, and the right side of digital display type pull and push dynamometer 7 is connected to a left side in sliding seat Side, the drawstring that passes on left of digital display type pull and push dynamometer 7 connects counterweight 1, drawstring pile warp successively after digital display type pull and push dynamometer 7 extraction Be fixed on the left fixed pulley 2 on the right side of fixed seat reversely, be fixed on the downward break-in of right fixed pulley 14 on the right side of workbench Connect hanging counterweight 1 afterwards, so that axial load is loaded to sliding seat by counterweight 1.
Driver 6 includes being made up of outer hexagonal cap body section 61 and swing handle section 62, and the circumscribed circle of cap body section 61 is than swing handle section 62 circumscribed circle diameter is big, and the identical complementation of shape of the driver groove of the profile of swing handle section 62 and high locked bolts 9 afterbody.
In the present embodiment, detection means, when using, is implemented in accordance with the following steps:
1) measure the flatness of driver groove circumferential surface of high locked bolts 9 afterbody and flatness is kept a record;
2) high locked bolts 9 are clamped with the dynamic scroll chuck 11 of torsion tester;
3) the swing handle section 62 of driver 6 and the driver groove of high locked bolts 9 match, the swing handle section 62 of driver 6 can be freely accessible to or Exit driver groove, but, swing handle section 62 axis of driver 6 and the theta alignment of high locked bolts 9 axis should be limited in the range of 1 °, Ensured by the axiality of torsion tester;
4) according to the regulation in procurement document or other applicable documentses, apply axial load, the applying of axial load relies on Drawstring, fixed pulley, pull and push dynamometer 7, the afterburner system of counterweight 1 composition, total axial load is locked with high in the swing handle section 62 of driver 6 The driver groove joint of bolt 9 should be effective;
5) driver 6 swing handle section 62 with recess and after applying axial force(But do not apply moment of torsion), so that sensor is filled Put the torque load zero detected by 4;
6) setting test rate and test torque, slowly applies moment of torsion until reaching in assembly direction with the speed of stable and continuous To minimum torque specified in high locked bolts 9 purchase specifications;
7) to the moment of torsion applying and defective pattern(As sometimes)Recorded;
8) unclamp the swing handle section 62 of high locked bolts 9 and driver 6;
9)According to applicable purchase specifications, driver groove is carried out with visual examination and the situation of driver groove recorded, to rotation Surface planarity around tool groove measures and keeps a record;
10)Repeat 1)To 9)Step, applied along removing direction using the swing handle section 62 of identical driver 6 and high locked bolts 9 Plus moment of torsion.
The present embodiment passes through torsion tester, pull and push dynamometer 7, counterweight 1, fixed pulley, wire, the connection of driver 6, by counterweight 1st, pull and push dynamometer 7 provides the axial force of standard, carries out accurate torgue measurement by torsion tester.
The present embodiment provides the device for carrying out twisting moment under specific axial force environment, will wherein left fixed pulley peace It is loaded in the fixed plate of dynamic scroll chuck 11 bottom, right fixed pulley is installed on the right side of workbench, protect with left fixed pulley axis Hold in same horizontal line, when using, dynamic scroll chuck 11 clamps the high locked bolts 9 head face of cylinder, determine scroll chuck 5 and clamp outward Six aspects of the driver 6 cap body section 61 of six sides, outer six sides of the swing handle section 62 of driver 6 insert interior six sides of high locked bolts 9 tail end Driver groove in, one end of drawstring is fixed in the fixed plate determined below scroll chuck 5, then the other end connect pull and push dynamometer 7, Take root drawstring to connect the other end of pull and push dynamometer 7 again, then be combined into an afterburner system with two fixed pulleys and counterweight 1, therefore Counterweight 1 provides axial force in this embodiment, and torsion machine provides standard torque, not only meet produce, the requirement of detection and standard, And be the twisting experimental rig of a kind of efficiency high, low cost, convenient use.
In the above-described embodiments, driver load is loaded by torsion machine, and in other embodiments, the torsion of driver loads Can be loaded by the instruments such as torque spanner or device and be measured.
In the above-described embodiments, axial loading device is connected in sliding seat all the time, in other embodiments, axially loaded Device can also be arranged in sliding seat after driver and securing member docking again, or even the mode manually inputting carries out axle Loading to load.

Claims (10)

1. the driver groove torsion-testing method of securing member is it is characterised in that comprise the following steps:
Step one, driver and securing member to be measured are coaxial docking in the horizontal direction, and the driver groove of securing member to be measured is spin-ended with driver Sleeve coordinates, and securing member to be measured and driver are spacing respectively in axial direction is assemblied on two pedestals that can move axially relatively, Securing member to be measured and driver can be around axially opposing rotations;
Step 2, applies opposite thrust to two pedestals, and described thrust is securing member to be measured and the axle of the opposite compression of driver To load, and measure the size of described thrust;
Step 3, keeps in securing member and driver one by the case of rotation stop, applying torque load to another on, and measures The size of torque load.
2. the driver groove torsion-testing method of securing member according to claim 1 is it is characterised in that to be measured tight in step one Pedestal residing for firmware is fixed seat, and the pedestal residing for driver is the sliding seat that can be relatively fixed seat axial movement;In step 2, Thrust acts in sliding seat.
3. the driver groove torsion-testing method of securing member according to claim 1 and 2 is it is characterised in that in step one, treat Survey pedestal residing for securing member and be provided with moment of torsion input unit for driving fastener rotation to be measured, driver is spin-ended be assemblied in residing On pedestal, and application torque metering device is provided with pedestal residing for driver;In step 3, by moment of torsion input unit to be measured tight Firmware input torque load, and pass through application torque metering device gauged torque load.
4. the driver groove torsion-testing method of securing member according to claim 3 is it is characterised in that moment of torsion input unit is The reducer arrangement being in transmission connection with motor.
5. it is exclusively used in implementing the detection means of the method for claim 1 it is characterised in that including support and thereon along water Square to relatively assembling two pedestals, in two pedestals, at least one is assemblied on support along relative direction guiding movement, two The opposite side of body be respectively equipped with for driver and securing member to be measured coaxially relative to the driver clamping portion of spacing vertically clamping and tight Firmware clamping portion, driver clamping portion and/or securing member clamping portion are provided with for driver and the securing member side of relatively rotating to be measured To the moment of torsion loading structure loading torque load.
6. detection means according to claim 5 it is characterised in that in two pedestals one be to be fixed on fixation on support Seat, another be the sliding seat being assemblied on support along relative direction guiding movement.
7. detection means according to claim 6 is it is characterised in that be connected with sliding seat for measuring and transmitting axial direction The axial metering device of loading force.
8. detection means according to claim 7 is it is characterised in that axial metering device is tensiometer, the one of tensiometer End is connected in sliding seat, the other end is connected on the counterweight of vertical overhanging by drawstring.
9. the detection means according to any one of claim 5 to 8 is it is characterised in that moment of torsion loading structure is in driver On one in clamping portion and securing member clamping portion, in driver clamping portion and securing member clamping portion, another is provided with for detection simultaneously The application torque metering device of gauged torque magnitude of load.
10. the detection means according to any one of claim 5 to 8 is it is characterised in that moment of torsion loading structure is for carrying The deceleration device of the motor-driven that dynamic residing clamping portion rotates.
CN201410687006.0A 2014-11-26 2014-11-26 Screwdriver slot torque test method of fastener and test device for implementing the method Active CN104390737B (en)

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105222944B (en) * 2015-09-18 2018-01-02 河南航天精工制造有限公司 The test method and high-temperature test device of locking torque test
CN106404263A (en) * 2016-08-31 2017-02-15 河南航天精工制造有限公司 Tooth wheel groove screw bolt pulling and twisting characteristic detection method and special-purpose wrench

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JP2001165791A (en) * 1999-02-08 2001-06-22 Ricoh Co Ltd Device, method, and tool for measuring axial force of screwed body and evaluation system of screwed body
CN2597974Y (en) * 2003-02-13 2004-01-07 李君实 High-strength bolt torque coefficient tester
CN101776500A (en) * 2009-10-19 2010-07-14 浙江电力职业技术学院 Fastener axial force-torsion combine testing machine
CN102095546A (en) * 2010-12-09 2011-06-15 浙江华电器材检测研究所 Shaft force and torque combined testing machine for fastening piece
CN102589784A (en) * 2012-01-04 2012-07-18 中国航天标准化研究所 Testing device for relationship between pre-tightening force and torque for threaded fastening connection
CN202720084U (en) * 2012-06-25 2013-02-06 国家标准件产品质量监督检验中心 Fastener torsion detection device
CN203191201U (en) * 2013-04-02 2013-09-11 河南航天精工制造有限公司 Bolt connection adaptability testing device and clamp thereof
CN103411721A (en) * 2013-07-26 2013-11-27 太仓中博铁路紧固件有限公司 Bolt torque detection device

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001165791A (en) * 1999-02-08 2001-06-22 Ricoh Co Ltd Device, method, and tool for measuring axial force of screwed body and evaluation system of screwed body
CN2597974Y (en) * 2003-02-13 2004-01-07 李君实 High-strength bolt torque coefficient tester
CN101776500A (en) * 2009-10-19 2010-07-14 浙江电力职业技术学院 Fastener axial force-torsion combine testing machine
CN102095546A (en) * 2010-12-09 2011-06-15 浙江华电器材检测研究所 Shaft force and torque combined testing machine for fastening piece
CN102589784A (en) * 2012-01-04 2012-07-18 中国航天标准化研究所 Testing device for relationship between pre-tightening force and torque for threaded fastening connection
CN202720084U (en) * 2012-06-25 2013-02-06 国家标准件产品质量监督检验中心 Fastener torsion detection device
CN203191201U (en) * 2013-04-02 2013-09-11 河南航天精工制造有限公司 Bolt connection adaptability testing device and clamp thereof
CN103411721A (en) * 2013-07-26 2013-11-27 太仓中博铁路紧固件有限公司 Bolt torque detection device

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