CN104390737A - 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 PDFInfo
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- CN104390737A CN104390737A CN201410687006.0A CN201410687006A CN104390737A CN 104390737 A CN104390737 A CN 104390737A CN 201410687006 A CN201410687006 A CN 201410687006A CN 104390737 A CN104390737 A CN 104390737A
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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
Technical field
The present invention relates to a kind of driver groove torsion-testing method of securing member and implement the pick-up unit of the method.
Background technology
At present, in Investment in fastener industry, an important indicator of product during the torsion-testing of the driver groove (as the outer-hexagonal of bolt head, interior hexagonal, cross recess and flat recess etc.) of securing member, especially the frequent high locked bolts used in field of aerospace, high locked bolts is a kind of securing member of special construction, under the height that it and Closely locking nut form locks the prerequisite being connected to and guaranteeing excellent mechanical property and serviceability, there is lightweight, that volume is little, anti-loose ability is high, anti-fatigue performance good, efficiency of assembling is high feature, and efficient one side can be realized tighten operation.As depicted in figs. 1 and 2, this high locked bolts comprises bolt body 100, 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 the driver groove 102 of coaxial interior six modes arranged, if high driver groove 102 does not reach the allowable torque requirement of needs, in use high locked bolts will occur situation about loosening causing bolt Joint failure; If exceed permitted torque demand, in use high locked bolts may be twisted off, and also can make bolt Joint failure, and this driver groove 102 may be destroyed, and makes high locked bolts surface unsightly, and produces certain air resistance.
Chinese patent literature 201220298438.9 discloses a kind of securing member torque tester, comprise column, base, weights, torque tube, scroll chuck, sway brace and threaded screw rod, column is fixed on base, torque tube is fixedly set on column, sway brace is arranged on column top, threaded screw rod is sleeved on sway brace, the upper end of threaded screw rod is fixed with position fixing handle, the bottom thread of the low bar of screw thread connects torque tube holder, torque tube is flexibly connected with torque tube holder, the top of torque tube is provided with moment of torsion conversion head, the bottom of torque tube is provided with X-over, scroll chuck is arranged on base by base cushion block, scroll chuck is positioned at immediately below torque tube, and weights is arranged on the top of torque tube, in use, be bolted on scroll chuck by detected, X-over is just equivalent to spanner, required axial load is applied by weights, required torsional load is obtained finally by dial torque wrench driving torque conversion head, but in order to ensure that the gravity of weights self can be loaded on detected bolt as axial load by torque tube smoothly, shaft hole matching mode between torque tube and torque tube holder should be clearance fit, when applying torsional load by torque tube on detected bolt so again, between the wall surface of the hole of the mating holes on the outer peripheral face of torque rod and torque rod holder, tolerance clearance can make torque tube radially wobble, so that torque tube, detected right alignment between bolt and scroll chuck can not reach requirement, axial load on detected bolt is applied to like this and torsional load will exist larger deviation by torque tube, the torsion-testing precision of driver groove is caused to reduce.Meanwhile, the own wt by torque tube limits, and the axial load that counterweight is applied on detected bolt by torque tube will be greater than setting value; By dial torque wrench self accuracy limitations, the torsional load detected by dial torque wrench and also there is larger deviation between actual loaded value.
Summary of the invention
The object of this invention is to provide a kind of driver groove torsion-testing method being improved the securing member of driver groove torsion-testing precision by the right alignment between raising driver and detected securing member, additionally provide a kind of pick-up unit being exclusively used in the driver groove torsion-testing method implementing this securing member simultaneously.
In order to realize above object, 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 coordinates with the spin-ended sleeve of driver, and securing member to be measured and driver are spacing vertically is respectively assemblied on two pedestals that can move axially relatively, securing member to be measured and driver can around axially relatively rotate;
Step 2, to two pedestals applyings snap-in force in opposite directions, described snap-in force is the axial load that securing member to be measured and driver compress in opposite directions, and measures the size of described snap-in force;
Step 3, to keep in securing member and driver one by spline when, on another, apply torque load, and the size of gauged torque load.
In step one, residing for securing member to be measured, pedestal is holder, and the pedestal residing for driver is can the sliding seat that moves axially of holder relatively; In step 2, snap-in force acts in sliding seat.
In step one, pedestal residing for securing member to be measured is provided with the moment of torsion input media for driving fastener rotation to be measured, and driver is spin-ended to be assemblied in residing pedestal and to exist, and is provided with application torque metering device on pedestal residing for driver; In step 3, by moment of torsion input media to securing member input torque load to be measured, and by application torque metering device gauged torque load.
Moment of torsion input media is the reducer arrangement be in transmission connection with drive motor.
The technical scheme of pick-up unit of the present invention is as follows:
Pick-up unit, comprise support and on two pedestals of relatively assembling in the horizontal direction, in two pedestals, at least one is assemblied on pedestal along relative direction guiding movement, the opposite side of two pedestals is respectively equipped with driver clamping portion and the securing member clamping portion of the spacing vertically clamping supplying driver coaxially relative with securing member to be measured, and driver clamping portion and/or securing member clamping portion are provided with the moment of torsion loading structure loading torque load for relatively rotating direction to driver and securing member to be measured.
Pick-up unit according to claim 5, is characterized in that, in two pedestals one for being fixed on holder on support, another is the sliding seat be assemblied in along relative direction guiding movement on support.
Sliding seat is connected with for measure and transmitter shaft to the axial measuring apparatus of loading force.
Axial measuring apparatus is tautness meter, and one end of tautness meter is connected in sliding seat, the other end is connected on the vertical counterweight overhang by stay cord.
Moment of torsion loading structure is in driver clamping portion and securing member clamping portion on one, and in driver clamping portion and securing member clamping portion, another is provided with for detecting and the application torque metering device of gauged torque magnitude of load.
Moment of torsion loading structure is the reduction gear for the motor-driven driving residing clamping portion to rotate.
In the present invention, the horizontal direction that is docked at of securing member to be measured and driver is carried out, and the loading of axial load be by the pedestal residing for securing member to be measured and driver between relative compression carry out, the loading of torque load be then by when to keep in securing member and driver one by spline, on another, apply torque load carry out, carrying out in the process axially loaded like this, driver or securing member to be measured can not and residing pedestal between relative movement, namely driver and securing member to be measured can not and residing pedestal between there is tolerance clearance, avoiding problems in the process loading torque load, the phenomenon of beat can not be there is on residing pedestal by the driver that rotates and/or securing member to be measured, improve the right alignment between driver and securing member to be measured in whole torsion-testing process, to ensure that axial load between driver and securing member to be measured and torque load can be loaded accurately, thus improve driver groove torsion-testing precision by the right alignment improved between driver and detected securing member, ensure that the driver groove torsion-testing of securing member is more accurate.
Accompanying drawing explanation
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 pick-up unit in embodiments of the invention;
Fig. 4 is the structural representation of driver in Fig. 3;
Fig. 5 is the vertical view of Fig. 4.
Embodiment
The embodiment of the driver groove torsion-testing method of securing member in the present invention: the method is a kind of method of testing for carrying out the high locked bolts driver groove moment of torsion of driver groove torque measurement under force environment at applying standard axle, 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 coordinates with the spin-ended sleeve of driver, and securing member to be measured vertically spacing clamping on the holder with motor-driven reduction gear, driver vertically spacing clamping can relative to holder vertically guiding movement with in the sliding seat of application torque metering device, securing member to be measured and driver can around axially relatively rotate on holder and sliding seat;
Step 2, makes sliding seat move towards holder by applying snap-in force in sliding seat, described snap-in force is the axial load that securing member to be measured and driver compress in opposite directions, and measures the size of described snap-in force;
Step 3, when keeping driver by spline, applies torque load by reduction gear 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 holder, and driver is in sliding seat, and in other embodiments, securing member to be measured also can be in sliding seat, and the driver of correspondence is on holder; Or securing member to be measured and driver are all in sliding seat, when carrying out axial load and loading, by applying the loading that mutually reverse snap-in force carries out axial load in two sliding seat.
In the above-described embodiments, in the loading procedure of torque load, securing member to be measured is driving link, and in other embodiments, torque load also can be loaded by driver, or rotation driver and securing member to be measured carry out the loading of torque load simultaneously.
From above-described embodiment, in the present invention, driver groove torsion-testing method is implemented by 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 coordinates with the spin-ended sleeve of driver, and securing member to be measured and driver are spacing vertically is respectively assemblied on two pedestals that can move axially relatively, securing member to be measured and driver can around axially relatively rotate;
Step 2, to two pedestals applyings snap-in force in opposite directions, described snap-in force is the axial load that securing member to be measured and driver compress in opposite directions, and measures the size of described snap-in force;
Step 3, to keep in securing member and driver one by spline when, on another, apply torque load, and the size of gauged torque load.
The embodiment of pick-up unit of the present invention: as described in Fig. 3 to Fig. 5, this pick-up unit is a kind of for carrying out the high locked bolts 9 driver groove torsional moment test device of driver groove torque measurement applying standard axle under force environment, primarily of 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, move scroll chuck 11, reducer arrangement 12, decelerator switches 13, left fixed pulley 2, device Host cabinet 15 form.
Device Host cabinet 15, computer monitor 10 and power switch 3 are all fixed on support, and between device Host cabinet 15 and computer monitor 10, are provided with the worktable of horizontal-extending on support.
Reducer arrangement 12 and decelerator switches 13 are assemblied on holder fixing on the left of worktable, reducer arrangement 12 is in transmission connection on the drive motor of torsion tester, and the dynamic main shaft be in transmission connection on reducer arrangement 12 output shaft is provided with on the right side of holder, dynamic main shaft is to overhanging, the projecting end of dynamic main shaft connects dynamic scroll chuck 11, dynamic scroll chuck 11 be the securing member clamping portion of the head spacing clamping vertically of mode confession high locked bolts 9 by being fixedly clamped, corresponding reducer arrangement 12 is for driving by driving dynamic scroll chuck 11 to rotate the moment of torsion loading structure that high locked bolts 9 rotates relative 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, be oppositely arranged about sliding seat and holder, the left end of sliding seat overhangs left to be connected to and sensor device 4 determines main shaft, the projecting end determining main shaft connects determines scroll chuck 5, to determine scroll chuck 5 be mode by being fixedly clamped for the driver 6 clamping portion of the head spacing clamping vertically of driver 6, and it is coaxial relative with dynamic scroll chuck 11 to determine scroll chuck 5, to make the high locked bolts 9 of assembling on both and driver 6 coaxial relative.
The explicit pull and push dynamometer 7 of left side linking number of sliding seat, the right side of digital display type pull and push dynamometer 7 is connected to sliding seat upper left side, the stay cord that passes on left of digital display type pull and push dynamometer 7 connects counterweight 1, stay cord after drawing from digital display type pull and push dynamometer 7 successively pile warp be fixed on left fixed pulley 2 on the right side of holder oppositely, be fixed on the right side of worktable right fixed pulley 14 break-in downwards after connect unsettled counterweight 1, to load axial load by counterweight 1 to sliding seat.
Driver 6 comprises and 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 larger than the circumscribed circle diameter of swing handle section 62, and the shape of the driver groove of the profile of swing handle section 62 and high locked bolts 9 afterbody is coincide complementary.
In the present embodiment, pick-up unit is in use, implements in accordance with the following steps:
1) measure the flatness of the driver groove circumferential surface of high locked bolts 9 afterbody and flatness is kept a record;
2) the dynamic scroll chuck 11 of high locked bolts 9 with torsion tester is clamped;
3) the swing handle section 62 of driver 6 matches with the driver groove of high locked bolts 9, the swing handle section 62 of driver 6 can freely enter 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 within the scope of 1 °, are ensured by the right alignment 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 the afterburner system of stay cord, fixed pulley, pull and push dynamometer 7, counterweight 1 composition, and total axial load should be effective in the swing handle section 62 of driver 6 and the driver groove joint of high locked bolts 9;
5) after applying axial force (but not applying moment of torsion), the torque load detected by sensor device 4 is made zero with recess in the swing handle section 62 of driver 6;
6) test rate and test torque are set, slowly apply moment of torsion with the speed of stable and continuous till reaching the minimum torque specified in high locked bolts 9 purchase specifications along installation direction;
7) record is carried out to the moment of torsion applied and defective pattern (as sometimes);
8) the swing handle section 62 of high locked bolts 9 and driver 6 is unclamped;
9) according to the purchase specifications be suitable for visual examination carried out to driver groove and record is carried out to the situation of driver groove, the surface planarity around driver groove measured and keeps a record;
10) repeat 1) to 9) step, use the swing handle section 62 of identical driver 6 and high locked bolts 9 to apply moment of torsion along dismounting direction.
The present embodiment, by the connection of torsion tester, pull and push dynamometer 7, counterweight 1, fixed pulley, wire, driver 6, is provided the axial force of standard, carries out accurate torgue measurement by torsion tester by counterweight 1, pull and push dynamometer 7.
The present embodiment is provided for the device carrying out twisting moment in specific axis under force environment, wherein left fixed pulley is installed on the fixed head of dynamic scroll chuck 11 bottom, right fixed pulley is installed on the right side of worktable, same level line is remained on left fixed pulley axis, in use, dynamic scroll chuck 11 clamps the high locked bolts 9 head face of cylinder, determine six aspects that scroll chuck 5 clamps the driver 6 cap body section 61 of outer six sides, outer six sides of the swing handle section 62 of driver 6 insert in the driver groove of interior six sides of high locked bolts 9 tail end, one end of stay cord is fixed on the fixed head determined below scroll chuck 5, then the other end connects pull and push dynamometer 7, get the other end that root stay cord connects pull and push dynamometer 7 again, an afterburner system is combined into again with two fixed pulleys and counterweight 1, therefore in this enforcement, counterweight 1 provides axial force, torsion machine provides standard torque, not only satisfied production, the requirement of detection and standard, and be that a kind of efficiency is high, cost is low, twisting test unit easy to use.
In the above-described embodiments, driver load is loaded by torsion machine, and in other embodiments, the torsion of driver loads and also can be undertaken loading and measuring by the instruments such as torque spanner or device.
In the above-described embodiments, axial loading device is connected in sliding seat all the time, in other embodiments, axial loading device also can be arranged in sliding seat after driver and securing member docking again, and even the mode manually inputted carries out the loading of axial load.
Claims (10)
1. the driver groove torsion-testing method of securing member, is characterized in that, 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 coordinates with the spin-ended sleeve of driver, and securing member to be measured and driver are spacing vertically is respectively assemblied on two pedestals that can move axially relatively, securing member to be measured and driver can around axially relatively rotate;
Step 2, to two pedestals applyings snap-in force in opposite directions, described snap-in force is the axial load that securing member to be measured and driver compress in opposite directions, and measures the size of described snap-in force;
Step 3, to keep in securing member and driver one by spline when, on another, apply torque load, and the size of gauged torque load.
2. the driver groove torsion-testing method of securing member according to claim 1, it is characterized in that, in step one, residing for securing member to be measured, pedestal is holder, and the pedestal residing for driver is can the sliding seat that moves axially of holder relatively; In step 2, snap-in force acts in sliding seat.
3. the driver groove torsion-testing method of securing member according to claim 1 and 2, it is characterized in that, in step, pedestal residing for securing member to be measured is provided with the moment of torsion input media for driving fastener rotation to be measured, driver is spin-ended to be assemblied in residing pedestal and to exist, and is provided with application torque metering device on pedestal residing for driver; In step 3, by moment of torsion input media to securing member input torque load to be measured, and by application torque metering device gauged torque load.
4. the driver groove torsion-testing method of securing member according to claim 3, is characterized in that, moment of torsion input media is the reducer arrangement be in transmission connection with drive motor.
5. be exclusively used in the pick-up unit implementing the method for claim 1, it is characterized in that, comprise support and on two pedestals of relatively assembling in the horizontal direction, in two pedestals, at least one is assemblied on pedestal along relative direction guiding movement, the opposite side of two pedestals is respectively equipped with driver clamping portion and the securing member clamping portion of the spacing vertically clamping supplying driver coaxially relative with securing member to be measured, and driver clamping portion and/or securing member clamping portion are provided with the moment of torsion loading structure loading torque load for relatively rotating direction to driver and securing member to be measured.
6. pick-up unit according to claim 5, is characterized in that, in two pedestals one for being fixed on holder on support, another is the sliding seat be assemblied in along relative direction guiding movement on support.
7. pick-up unit according to claim 6, is characterized in that, sliding seat is connected with for measure and transmitter shaft to the axial measuring apparatus of loading force.
8. pick-up unit according to claim 7, is characterized in that, axial measuring apparatus is tautness meter, and one end of tautness meter is connected in sliding seat, the other end is connected on the vertical counterweight overhang by stay cord.
9. the pick-up unit according to any one of claim 5 to 8, it is characterized in that, moment of torsion loading structure is in driver clamping portion and securing member clamping portion on one, and in driver clamping portion and securing member clamping portion, another is provided with for detecting and the application torque metering device of gauged torque magnitude of load.
10. the pick-up unit according to any one of claim 5 to 8, is characterized in that, moment of torsion loading structure is the reduction gear for the motor-driven driving residing clamping portion to rotate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410687006.0A CN104390737B (en) | 2014-11-26 | 2014-11-26 | Screwdriver slot torque test method of fastener and test device for implementing the method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410687006.0A CN104390737B (en) | 2014-11-26 | 2014-11-26 | Screwdriver slot torque test method of fastener and test device for implementing the method |
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| CN104390737A true CN104390737A (en) | 2015-03-04 |
| CN104390737B CN104390737B (en) | 2017-02-22 |
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| CN201410687006.0A Active CN104390737B (en) | 2014-11-26 | 2014-11-26 | Screwdriver slot torque test method of fastener and test device for implementing the method |
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Cited By (3)
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| CN105222944A (en) * | 2015-09-18 | 2016-01-06 | 河南航天精工制造有限公司 | The test method of locking torque test and high-temperature test device |
| 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 |
| CN109490101A (en) * | 2018-12-20 | 2019-03-19 | 中国航空综合技术研究所 | Bolt driver slot twisting performance test apparatus and its test method |
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| CN109490101A (en) * | 2018-12-20 | 2019-03-19 | 中国航空综合技术研究所 | Bolt driver slot twisting performance test apparatus and its test method |
| CN109490101B (en) * | 2018-12-20 | 2023-09-08 | 中国航空综合技术研究所 | Bolt screwing tool groove turning and screwing performance test device and test method thereof |
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| CN104390737B (en) | 2017-02-22 |
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