CN105716843B - One kind is bolted with reference to face Rigidity Experiment device - Google Patents

One kind is bolted with reference to face Rigidity Experiment device Download PDF

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Publication number
CN105716843B
CN105716843B CN201610056078.4A CN201610056078A CN105716843B CN 105716843 B CN105716843 B CN 105716843B CN 201610056078 A CN201610056078 A CN 201610056078A CN 105716843 B CN105716843 B CN 105716843B
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China
Prior art keywords
crossbeam
strength bolt
nut
washer
pressure sensor
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CN201610056078.4A
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Chinese (zh)
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CN105716843A (en
Inventor
张琳琳
李晓阳
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Beijing University of Technology
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Beijing University of Technology
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M13/00Testing of machine parts

Abstract

One kind is bolted to be made of with reference to face Rigidity Experiment device left crossbeam, right crossbeam, high-strength bolt, washer, nut, pressure sensor, fulcrum cylinder.High-strength bolt screws on nut and the lower part of left crossbeam and right crossbeam links together across the hole of left crossbeam and right crossbeam, washer, pressure sensor, the top of left crossbeam and right crossbeam is machined with semi-cylindrical groove, fulcrum cylinder is installed to play when experimental provision middle is by power vertically downward in slot, it is used as fulcrum, makes under tension at the lower section high strength exploitation of experimental provision.Such experimental result closer to heavy duty machine tools crossbeam work when actual conditions, the result simulated in this way is more nearly with actual conditions, with more reference value.

Description

One kind is bolted with reference to face Rigidity Experiment device
Technical field
The present invention relates to a kind of heavy duty machine tools transom bolt connection jointing parameters to test the research of crossbeam rigidity effects Device belongs to heavy duty machine tools experimental applications technical field.
Background technology
For heavy duty machine tools commonly using the larger crossbeam of length, crossbeam is usually segmental machining manufacture, is connected in the bolt of crossbeam Faying face is connect generally using multiple high strength exploitations, and pre-tighten.The nethermost connection bolt in crossbeam junction is by pulling force Maximum, the pressure that upper beam connection faying face is subject to are maximum.Increase faying face area may be used in top faying face, improves knot The methods of closing surface hardness can reduce the deformation of faying face well, but crossbeam faying face lower part high strength exploitation, For bolt by pulling force, to improve rigidity of this part can only lean on bolt, and lower bolt junction is exactly crossbeam junction or even whole A rigid key point of crossbeam, that is, crossbeam junction lower bolt coupling part rigidity to the rigidity shadow of entire crossbeam It rings just bigger.The factor being had an impact to crossbeam engaging portion rigidity is more, general using in use for laboratory high intensity spiral shell at present Bolt connects two circular steel plates, measures real-time pressure using pressure sensor, the deformation of bolt is measured using foil gauge Amount, by measuring the deflection of bolt when different contacts area, different surface roughness, different pressures, contact surface, then It is emulated by computer software, deformation of the simulated machine tool in different stress, to find the side for improving transverse beam rigidity Method.Stress is identical around this measuring method bolt has larger gap with actual conditions, can only also be summarized by experiment not the same The deflection of faying face under the conditions of carrying, the deflection of crossbeam are also wanted computer simulation, are simulated in this way by virtual emulation The deflection of crossbeam, which increases workload, can also bring a certain amount of error.
Invention content
The present invention provides one kind for the drawbacks described above of the prior art and is bolted with reference to face Rigidity Experiment device.The dress It puts and true long beam structure is simulated using a short beam structure is bolted.The beam structure is by two sections Composition, two sections, by a high strength exploitation, are bolted to the lower end of crossbeam, are bolted two crossbeam end faces at place Upper each there are one boss, the size of boss can change according to requirement of experiment.Two sections of the upper end crossbeam end face processing of crossbeam junction There is semi-cylindrical notch, place a cylinder in notch, cylindrical radius is consistent with semi-cylindrical root radius, as balance pivot It uses, when being bolted above composition surface by power vertically downward, what bolt was subject to is simple tension.Pressure is set on shank of bolt Active force of the force snesor on bolt during measurement experiment, will in experiment using the function of the pressure of cupping machine Connecting cross beam traverse both ends are paved with high rigidity cushion block, and the surface being bolted with reference to face applies pressure vertically downward, pressure The size and crossbeam of power are measured in the deflection of vertical direction by testing machine.It is measured by experiment and existed being bolted composition surface In the case of different area and different roughness, the deflection of crossbeam when composition surface top applies different pressures.Then pass through mathematics Analysis, the relationship of analysis transverse beam rigidity and composition surface area, transverse beam rigidity and the relationship of composition surface surface roughness, transverse beam rigidity Stressed relationship is applied with composition surface top.On this basis, to go out bolt joint surface roughness by analysis and summary firm to crossbeam The rule having an impact is spent, the design for lathe provides foundation.
Its technical problem is solved to adopt the technical scheme that:
One kind be bolted with reference to face Rigidity Experiment device be by left crossbeam, right crossbeam, high-strength bolt, washer, nut, Pressure sensor, fulcrum cylinder composition.High-strength bolt is screwed on across the hole of left crossbeam and right crossbeam, washer, pressure sensor Nut links together the lower part of left crossbeam and right crossbeam, and the top of left crossbeam and right crossbeam is machined with semi-cylindrical groove, slot In fulcrum cylinder be installed play when experimental provision middle is by power vertically downward, used as fulcrum, fill experiment Under tension at the lower section high strength exploitation put.Such experimental result closer to heavy duty machine tools crossbeam work when reality Situation, the result simulated in this way is more nearly with actual conditions, with more reference value.
Description of the drawings
Fig. 1 is main sectional view of the present invention;
Fig. 2 is the bottom view of Fig. 1;
Fig. 3 is the main sectional view of left and right crossbeam (structure of left and right crossbeam is identical);
Fig. 4 is the left view of Fig. 3;
Fig. 5 is the right view of Fig. 3.
In figure:1st, left crossbeam, 2, fulcrum cylinder, 3, right crossbeam, 4, high-strength bolt, 5, washer, 6, pressure sensor, 7, Nut.
Specific embodiment
As shown in Fig. 1~5, one kind is bolted with reference to face Rigidity Experiment device, the device by left crossbeam 1, right crossbeam 3, High-strength bolt 4, washer 5, nut 7, pressure sensor 6, fulcrum cylinder 2 form;Left crossbeam 1,3 symmetrical arrangement of right crossbeam, Left crossbeam 1, right crossbeam 3 bottom be respectively equipped with corresponding hole, high-strength bolt 4 passes through left crossbeam 1, right crossbeam 2 corresponding Hole after the two is connected, washer 5 is equipped at the cooperation of the end of high-strength bolt 4 and left crossbeam 1;Nut 7 and high intensity spiral shell It is matched at the bottom thread of bolt 4, pressure sensor 6 is arranged between nut 7 and right crossbeam 3;Nut 7 and pressure sensor 6 Between also be provided with washer 5.
The top of left crossbeam 1 and right crossbeam 3 is machined with semi-cylindrical groove, and fulcrum cylinder 2 is equipped in slot and is played when experiment When device middle is by power vertically downward, used as fulcrum, make 4 junction of lower section high-strength bolt of experimental provision by To pulling force.Such experimental result closer to heavy duty machine tools crossbeam work when actual conditions, the result and reality simulated in this way Situation is more nearly.

Claims (1)

1. one kind is bolted with reference to face Rigidity Experiment device, it is characterised in that:The device by left crossbeam (1), right crossbeam (3), High-strength bolt (4), washer (5), nut (7), pressure sensor (6), fulcrum cylinder (2) composition;Left crossbeam (1), right crossbeam (3) symmetrical arrangement, left crossbeam (1), right crossbeam (3) bottom be respectively equipped with corresponding hole, high-strength bolt (4) is across a left side The two is connected behind crossbeam (1), right crossbeam (3) corresponding hole, the end of high-strength bolt (4) and the cooperation of left crossbeam (1) Place is equipped with washer (5);It is matched at nut (7) and the bottom thread of high-strength bolt (4), pressure sensor (6) is arranged on spiral shell Between female (7) and right crossbeam (3);Washer (5) also is provided between nut (7) and pressure sensor (6);
The top of left crossbeam (1) and right crossbeam (3) is machined with semi-cylindrical groove, and fulcrum cylinder (2) is equipped in slot;
Fulcrum cylinder (2) is played when experimental provision middle is by power vertically downward, is used as fulcrum, is made experimental provision Lower section high-strength bolt (4) junction under tension;Such experimental result closer to heavy duty machine tools crossbeam work when reality Border situation, the result simulated in this way are more nearly with actual conditions.
CN201610056078.4A 2016-01-27 2016-01-27 One kind is bolted with reference to face Rigidity Experiment device Active CN105716843B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610056078.4A CN105716843B (en) 2016-01-27 2016-01-27 One kind is bolted with reference to face Rigidity Experiment device

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Application Number Priority Date Filing Date Title
CN201610056078.4A CN105716843B (en) 2016-01-27 2016-01-27 One kind is bolted with reference to face Rigidity Experiment device

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CN105716843A CN105716843A (en) 2016-06-29
CN105716843B true CN105716843B (en) 2018-06-19

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101886961A (en) * 2010-07-26 2010-11-17 西安理工大学 Full-load static characteristic test device and test method of bolt joint surface unit
CN102323033A (en) * 2011-05-30 2012-01-18 北京工业大学 Device for testing normal dynamic characteristics of junction surface
CN102589865A (en) * 2012-02-17 2012-07-18 北京工业大学 Normal stiffness and hysteresis characteristic test experimental device for double-bolt joint surface
CN103335825A (en) * 2013-05-14 2013-10-02 国家电网公司 Bolt tightening force coefficient measuring method

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20130011227A (en) * 2011-07-21 2013-01-30 한전케이피에스 주식회사 Measurement gauge for expansion of bolt

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101886961A (en) * 2010-07-26 2010-11-17 西安理工大学 Full-load static characteristic test device and test method of bolt joint surface unit
CN102323033A (en) * 2011-05-30 2012-01-18 北京工业大学 Device for testing normal dynamic characteristics of junction surface
CN102589865A (en) * 2012-02-17 2012-07-18 北京工业大学 Normal stiffness and hysteresis characteristic test experimental device for double-bolt joint surface
CN103335825A (en) * 2013-05-14 2013-10-02 国家电网公司 Bolt tightening force coefficient measuring method

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