CN110779468B - Bending rebound measuring device for metal pipe fitting - Google Patents
Bending rebound measuring device for metal pipe fitting Download PDFInfo
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- CN110779468B CN110779468B CN201910987535.5A CN201910987535A CN110779468B CN 110779468 B CN110779468 B CN 110779468B CN 201910987535 A CN201910987535 A CN 201910987535A CN 110779468 B CN110779468 B CN 110779468B
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- 238000005452 bending Methods 0.000 title claims abstract description 36
- 239000002184 metal Substances 0.000 title claims abstract description 24
- 230000007246 mechanism Effects 0.000 claims abstract description 69
- 238000009423 ventilation Methods 0.000 claims description 4
- 230000001681 protective effect Effects 0.000 claims description 2
- 238000005259 measurement Methods 0.000 abstract description 17
- 238000009434 installation Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
- G01B11/255—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures for measuring radius of curvature
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
The invention discloses a metal pipe bending rebound measuring device, which comprises a positioning module and a processing center which are arranged on a workbench, and a measuring mechanism which is arranged opposite to the positioning module; the positioning module comprises a lifting mechanism and a supporting mechanism arranged on the lifting mechanism; the processing center is in signal connection with the measuring mechanism; the invention has the advantages of modularized design, simple and flexible operation, high measurement precision and strong universality.
Description
Technical Field
The invention relates to a bending precision measuring device for a metal bent pipe, in particular to a bending rebound measuring mechanism for a metal pipe fitting.
Background
The metal pipe fitting is bent and formed by determining reasonable supporting points and stress points and applying certain bending moment or bending force. In the bending forming process of the pipe fitting, the outer side of the bending deformation area is subjected to tangential tensile stress, and the pipe wall is thinned and even cracked; the inner side is subjected to tangential compressive stress, the pipe wall is thickened, and even the pipe wall is unstably wrinkled; the resultant force of the two produces compressive stress inwards in radial direction, so that the cross section is flattened and distorted, and even collapses. After unloading, the rebound phenomenon is generated due to residual stress in the bent pipe and elastic deformation recovery. Therefore, the problems of stretch cracking, wrinkling, section distortion, rebound and the like easily occur in the pipe bending and forming process, and the pipe bending and forming process is a complex forming process with multiple forming defects.
When the metal bent pipe is applied to different fields, the forming performance indexes such as wall thickness reduction rate, wall thickness thickening rate, fold degree, ellipticity, rebound accuracy and the like of the metal bent pipe have corresponding standards or requirements. After each metal pipe is bent and formed, the related forming performance index is measured. The contour forming rebound accuracy can be measured by means of special equipment such as a 3D global coordinate measuring instrument, but the cost is high, and a special fixture is required to be designed. Manual positioning measurement can be adopted, but the precision is not high and the efficiency is low.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the metal pipe bending rebound measuring device which is simple to operate, high in modularization degree and high in operation efficiency.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the device comprises a positioning module and a processing center which are arranged on a workbench, and a measuring mechanism which is arranged opposite to the positioning module; the positioning module comprises a lifting mechanism and a supporting mechanism arranged on the lifting mechanism; the processing center is in signal connection with the measuring mechanism;
The measuring mechanism comprises a cross beam, a guide rail, a sliding block, an infrared range finder, a cylinder body upper cover, a cylinder body lower cover and a cylinder piston; wherein, two ends of the beam are respectively connected with the upper cover of the cylinder body; the bottom of the cylinder body upper cover is provided with a cylinder body, and the bottom of the cylinder body is provided with a cylinder body lower cover; the cylinder piston penetrates through the bottom of the cylinder body lower cover and then is arranged in the cylinder body of the cylinder; the bottom of the cylinder piston is fixedly connected with the operating platform; the bottom of the cross beam is provided with a guide rail, the bottom of the guide rail is movably provided with a slide block, and the slide block is provided with an infrared range finder.
The supporting mechanism comprises an L-shaped base, a clamping plate, a bracket guide rail and a tray; wherein, a bracket guide rail is arranged on the tray, and an L-shaped base is arranged on the bracket guide rail; the clamping plate is arranged on the L-shaped base, and a torsion spring is arranged in the joint of the L-shaped base and the clamping plate;
The lifting mechanism comprises a workbench and a screw rod, the workbench is arranged on the operating platform, a shell is arranged on the workbench, 2 bearings, 1 worm wheel and 1 worm are arranged in the shell, and the worm wheel is arranged between the 2 bearings; the worm wheel is in threaded connection with the worm; an upper cover is arranged on the shell, and a screw nut is arranged below the workbench; the screw rod sequentially passes through the upper cover, the bearing in the shell, the worm wheel, the workbench and the screw rod nut from top to bottom; and the screw rod is sleeved with a screw rod protecting sleeve; the worm wheel is in threaded connection with the screw rod; the worm is fixedly connected with the handle through an inner hexagon nut; the handle is provided with a locking device which is arranged on the outer side wall surface of the shell.
The bottom of the beam in the measuring mechanism is provided with a first dovetail groove for installing a guide rail, the middle of the upper surface of the sliding block is provided with a second dovetail groove, and the upper end and the lower end of the guide rail are respectively provided with a dovetail; the second dovetail groove of the sliding block is connected with the lower dovetail of the guide rail in a matched manner; the upper end dovetail of the guide rail is matched and connected with the first dovetail groove of the cross beam.
The cylinder body is characterized in that one side of the upper part of the cylinder body upper cover is provided with a threaded hole, threads are machined at two ends of the cross beam, and the threads on the cross beam are in threaded connection with the threaded hole on the cylinder body upper cover.
The bottom of the cylinder body upper cover is provided with an upper cover mounting platform, and more than 1 upper cover screw mounting holes are uniformly distributed on the upper cover mounting platform; the upper part of the cylinder body lower cover is provided with a lower cover mounting platform, and more than 1 lower cover screw mounting holes are uniformly distributed on the lower cover mounting platform; the upper end of the cylinder body is arranged in an upper cover mounting platform of the upper cover of the cylinder body and is screwed and connected with an upper cover screw mounting hole through a screw, and the lower end of the cylinder body is arranged in a lower cover mounting platform of the lower cover of the cylinder body and is screwed and connected with a lower cover screw mounting hole through a screw.
A cylinder piston mounting hole is formed in the middle of the bottom of the cylinder body lower cover; the upper end of the cylinder piston passes through the cylinder piston mounting hole and then is mounted in the cylinder body, and the bottom of the cylinder piston is fixedly connected with the operating platform.
A cylindrical infrared range finder mounting table is arranged in the middle of the lower bottom surface of the sliding block, and 2 infrared range finder threaded mounting holes are formed in the mounting table; the infrared range finder is fixedly connected with an infrared range finder thread mounting hole of a cylindrical infrared range finder mounting table on the sliding block through a screw.
The guide rail is formed by splicing and combining more than 1 guide rail sections with the same size.
The guide rail is of a hollow structure.
Two ventilation holes are formed in the cylinder body.
The inner end of a support guide rail in the supporting mechanism is provided with a fourth through hole, and the outer end of the support guide rail is provided with a rectangular groove for installing an L-shaped base;
more than 1 mounting columns are arranged on the upper surface of the tray, and threads are processed at the upper ends of the mounting columns; the center of the lower surface of the tray is provided with a threaded hole for connecting with a thread on a screw rod on the lifting mechanism; the periphery of the tray is provided with a datum line for adjusting levelness; the mounting column passes through the fourth through hole of the support guide rail and then is screwed with the internal thread of the locking nut;
The upper surface of the L-shaped base is provided with a mounting platform and a fourth mounting hole of the clamping plate, a base mounting column is mounted in the middle of the bottom of the L-shaped base, and threads are processed at the outer end of the base mounting column; the clamping plate is hinged with a fourth mounting hole on the L-shaped base mounting platform through a pin; the base mounting column passes through the rectangular groove of the support guide rail and then is connected with the internal thread of the locking nut in a threaded manner.
More than 1 groove is formed in the end face of the locking device in the lifting mechanism, a clamping block is arranged in the groove, and more than 1 first mounting holes for fixedly connecting with the shell are formed in the periphery of the locking device; the middle of the locking device is provided with a first through hole for the handle to pass through.
The shell comprises a mounting platform, a mounting cavity for mounting a bearing and a worm gear is arranged on the mounting platform, and a second through hole for mounting a screw rod is formed in the middle of the mounting cavity of the shell; the side of installation cavity set up the second mounting hole that installation worm was used, the mounting platform on set up the third through-hole that links firmly with the workstation and use, the mounting platform utilize and link firmly through the screw between third through-hole and the workstation.
The periphery of the upper cover is provided with more than 1 third mounting holes, and the upper cover is fixedly connected with the shell through screws by utilizing the third through holes.
The upper end of the screw rod is provided with threads matched with the supporting mechanism.
The processing center is connected with the infrared range finder through wireless signals, the processing center is a computer processing system, measured data are received and displayed in a wireless mode, the difference between the measured data and the data actually required is calculated through the computer processing system, and rebound accuracy is calculated.
The beneficial effects of the invention are as follows:
(1) The guide rail is the combination formula, can increase or reduce the number of guide rail according to infrared range finder measurement required motion stroke, and the length of crossbeam also can change length as required, makes the resilience precision measurement that is fit for different bending radius and bending angle, easy operation flexibility, the commonality is strong.
(2) The mounting angle of the bracket guide rail and the tray can be adjusted at will, so that the method is suitable for rebound accuracy measurement of the bent pipe with any bending angle; as the rectangular groove is processed at the outer end, the mounting position of the L-shaped base on the support guide rail can be adjusted, so that the method is suitable for measuring rebound precision of bent pipes with different bending radiuses.
(3) The guide rail is designed into a hollow structure, the tray is designed into a frame type hollow structure, so that the dead weight is reduced, and the stability of the mechanism can be improved; meanwhile, the deformation of the guide rail and the tray can be reduced due to light weight, and the measurement accuracy of the device is improved.
(4) The handle is rocked to drive the worm, the worm wheel is driven to the worm wheel and then to the screw rod, and after the height of the screw rod is adjusted to meet the requirements, the clamping block is clamped into one of the grooves of the locking device, so that the screw rod is kept at a certain height, and the measurement accuracy is improved. The handle is fixedly connected with the worm, the worm is in threaded transmission with the worm wheel, and the worm wheel is in threaded transmission with the screw rod, so that the structure is stable. Bearings are arranged on the upper side and the lower side of the worm wheel, so that the running stability of the mechanism can be improved, and meanwhile, the abrasion is reduced.
(5) The cylinder body can move up and down by controlling the two air vent holes of the cylinder body, so that the up and down position of the rebound accuracy measuring mechanism can be adjusted. The sliding block slides at the bottom of the guide rail to drive the infrared distance meter to move on the guide rail, so that the horizontal position of the measuring mechanism can be adjusted. (6) The torsional spring provides clamping force, so that the clamping plate clamps the bent pipe to be measured, the bent pipe is prevented from sliding, and the measurement accuracy is improved. The upper cover is arranged above the shell and fixedly connected with the shell through screws so as to prevent sundries such as dust and the like from entering the installation cavity of the worm wheel, and the service life of the mechanism can be prolonged.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is an enlarged schematic view of the measuring mechanism of FIG. 1
FIG. 3 is an enlarged schematic view of the support mechanism of FIG. 1
Fig. 4 is an enlarged schematic view of the lifting mechanism in fig. 1
FIG. 5 is an enlarged view of a portion of the turbine, lead screw, worm gear of FIG. 4;
FIG. 6 is an enlarged schematic view of the cross beam of FIG. 2;
FIG. 7 is an enlarged schematic view of the guide rail of FIG. 2;
FIG. 8 is an enlarged cross-sectional view of the slider of FIG. 2;
FIG. 9 is an enlarged cross-sectional view of the cylinder head of FIG. 2;
FIG. 10 is an enlarged cross-sectional view of the cylinder lower cover of FIG. 2;
FIG. 11 is an enlarged cross-sectional view of the tray of FIG. 3;
FIG. 12 is an enlarged cross-sectional view of the L-shaped base of FIG. 3;
FIG. 13 is a schematic view of the locking device of FIG. 4;
FIG. 14 is a schematic view of the housing of FIG. 4;
fig. 15 is a schematic view of the structure of the screw of fig. 4.
Detailed Description
The objects and effects of the present invention will become more apparent from the following detailed description of the preferred embodiments and the accompanying drawings, in which the present invention is further described in detail. It should be understood that the particular embodiments described herein are illustrative only and are not intended to limit the invention.
The device for measuring the bending rebound of the metal pipe fitting of the embodiment comprises a positioning module and a processing center 4 which are arranged on a workbench 302, and a measuring mechanism 1 which is arranged opposite to the positioning module, as shown in fig. 1-15; the positioning module comprises a lifting mechanism 3 and a supporting mechanism 2 arranged on the lifting mechanism 3; the processing center 4 is in signal connection with the measuring mechanism;
The measuring mechanism 1 comprises a cross beam 11, a guide rail 12, a sliding block 13, an infrared range finder 14, a cylinder body 15, a cylinder body upper cover 16, a cylinder body lower cover 17 and a cylinder piston 18; wherein, two ends of the beam 11 are respectively connected with the upper cover 16 of the cylinder body; the bottom of the cylinder body upper cover 16 is provided with a cylinder body 15, and the bottom of the cylinder body 15 is provided with a cylinder body lower cover 17; the cylinder piston 18 passes through the bottom of the cylinder lower cover 17 and is arranged in the cylinder body 15; the bottom of the cylinder piston 18 is fixedly connected with an operation table; the bottom of the cross beam 11 is provided with a guide rail 12, the bottom of the guide rail 12 is movably provided with a sliding block 13, and the sliding block 13 is provided with an infrared range finder 14.
The supporting mechanism 2 comprises an L-shaped base 21, a clamping plate 22, a bracket guide rail 23 and a tray 24; wherein, the tray 24 is provided with a bracket guide rail 23, and the bracket guide rail 23 is provided with an L-shaped base 21; the clamping plate 22 is arranged on the L-shaped base 21, and a torsion spring is arranged in the joint of the L-shaped base 21 and the clamping plate 22 to provide clamping force;
The lifting mechanism 3 comprises a workbench 302 and a screw rod 31, wherein the workbench 302 is arranged on the workbench, a shell 38 is arranged on the workbench 302, 2 bearings 34, 1 worm wheel 32 and 1 worm 33 are arranged in the shell 38, and the worm wheel 32 is arranged between the 2 bearings 34; the worm wheel 32 is in threaded connection with the worm 33; an upper cover 39 is arranged on the shell 38, and a screw nut 35 is arranged below the workbench 302; the screw 31 sequentially passes through the upper cover 39, the bearing 34 and the worm wheel 32 in the shell 38, the workbench 302 and the screw nut 35 from top to bottom; and the screw rod 31 is sleeved with a screw rod protective sleeve 303; the worm wheel 32 is in threaded connection with the screw rod 31; the worm 33 is fixedly connected with the handle 36 through an inner hexagon nut; the handle 36 is provided with a locking device 37, and the locking device 37 is arranged on the outer side wall surface of the shell 38.
The bottom of the cross beam 11 in the measuring mechanism 1 is provided with a first dovetail groove 111 for installing the guide rail 12, the middle of the upper surface of the sliding block 13 is provided with a second dovetail groove 131, and the upper end and the lower end of the guide rail 12 are respectively provided with a dovetail 121; the second dovetail groove 131 of the sliding block 13 is matched and connected with the lower dovetail 121 of the guide rail 12; the upper end dovetail 121 of the guide rail 12 is matched and connected with the first dovetail groove 111 of the cross beam 11.
Screw holes 161 are formed in one side of the upper portion of the cylinder upper cover 16, threads 112 are formed in two ends of the cross beam 11, and the threads 112 on the cross beam 11 are in threaded connection with the screw holes 161 in the cylinder upper cover 16.
An upper cover mounting platform 162 is mounted at the bottom of the cylinder upper cover 16, and 2 upper cover screw mounting holes 163 are uniformly distributed on the upper cover mounting platform 162; the upper part of the cylinder body lower cover 17 is provided with a lower cover mounting platform 172, and 4 lower cover screw mounting holes 173 are uniformly distributed on the lower cover mounting platform 172; the upper end of the cylinder body 15 is arranged in the upper cover mounting platform 162 of the cylinder body upper cover 16 and is screwed and connected with the upper cover screw mounting hole 163 through a screw, and the lower end of the cylinder body 15 is arranged in the lower cover mounting platform 172 of the cylinder body lower cover 17 and is screwed and connected with the lower cover screw mounting hole 173 through a screw.
A cylinder piston mounting hole 171 is formed in the middle of the bottom of the cylinder lower cover 17; the upper end of the cylinder piston 18 passes through the cylinder piston mounting hole 171 and then is mounted in the cylinder body 15, and the bottom of the cylinder piston 18 is fixedly connected with the operating platform.
A cylindrical infrared range finder mounting table 132 is arranged in the middle of the lower bottom surface of the sliding block 13, and 2 infrared range finder threaded mounting holes 133 are formed in the mounting table 132; the infrared range finder 14 is fixedly connected with an infrared range finder thread mounting hole 133 of a cylindrical infrared range finder mounting table 132 on the sliding block 13 through a screw.
The guide rail 12 is formed by splicing and combining more than 1 guide rail sections with the same size.
The guide rail 12 is of a hollow structure.
The cylinder body 15 is provided with two ventilation holes 151.
The inner end of the support guide rail 23 in the support mechanism 2 is provided with a fourth through hole 231, and the outer end is provided with a rectangular groove 232 for installing the L-shaped base 21;
The upper surface of the tray 24 is provided with 3 mounting columns 241, and the upper ends of the mounting columns 241 are provided with threads; a threaded hole 242 for connecting with the screw thread of the screw rod 31 on the lifting mechanism 3 is arranged in the center of the lower surface of the tray 24; the outer circumference of the tray 24 is provided with a datum line 243 for adjusting levelness; the mounting post 241 is screwed and connected with the internal thread of the locking nut 25 after passing through the fourth through hole 231 of the bracket guide rail 23;
The upper surface of the L-shaped base 21 is provided with a mounting platform 211 and a fourth mounting hole 212 of the clamping plate 22, a base mounting column 213 is mounted in the middle of the bottom of the L-shaped base 21, and threads are machined at the outer end of the base mounting column 213; the clamping plate 22 is hinged with a fourth mounting hole 212 on a mounting platform 211 of the L-shaped base 21 through a pin; the base mounting post 213 passes through the rectangular groove 232 of the bracket guide rail 23, and then the screw thread thereon is in threaded connection with the internal screw thread of the lock nut 25.
The end face of the locking device 37 in the lifting mechanism 3 is provided with 3 grooves 371, a clamping block 301 is arranged in each groove 371, the clamping block 301 is clamped into one groove 271 of the locking device 37, and the position of the handle 36 is fixed, so that the screw 31 is kept at a certain height; 4 first mounting holes 372 for being fixedly connected with the shell 38 are formed in the periphery of the locking device 37; the middle of the locking device 37 is provided with a first through hole 373 for the handle 36 to pass through.
The housing 38 comprises a mounting platform 384, a mounting bearing 34 and a mounting cavity 381 of the worm wheel 32 are mounted on the mounting platform 384, and a second through hole 382 for mounting the screw 31 is formed in the middle of the mounting cavity 381 of the housing 38; the side of the installation cavity 381 is provided with a second installation hole 383 for installing the worm 33, the installation platform 384 is provided with a third through hole 385 fixedly connected with the workbench 302, and the installation platform 384 is fixedly connected with the workbench 302 by a screw through the third through hole 385.
The periphery of the upper cover 39 is provided with 4 third mounting holes 391, and the upper cover 39 is fixedly connected with the housing 38 by using screws through the third mounting holes 391.
The upper end of the screw rod 31 is provided with a thread 311 matched with the supporting mechanism.
The processing center 4 is connected with the infrared range finder 14 through wireless signals, the processing center 4 is a computer processing system, measured data are received and displayed through wireless, the difference between the measured data and the data actually required is calculated through the computer processing system, and rebound accuracy is calculated.
During installation and debugging, the debugging supporting mechanism 2 is installed first. Firstly, uniformly arranging 3 support guide rails 23 on the tray 24, and then adjusting the positions of the support guide rails 23 on the tray 24 according to the bending angle of the metal bent pipe 5 to be supported and positioned, and pre-tightening; secondly, installing the L-shaped base 21 on the support guide rail 23, installing the clamping plates 22 on the L-shaped bases 21 on two sides, and preliminarily adjusting the position of the L-shaped base 21 on the support guide rail 23 and pre-tightening according to the bending radius of the metal bent pipe 5 required to be supported and positioned; then the metal bent pipe 5 to be measured is placed on the L-shaped base 21, the installation angle of the bracket guide rail 23 and the installation position of the L-shaped base 21 are adjusted, so that the bent section of the metal bent pipe 5 to be measured is placed on the middle L-shaped base 21, and the two straight line sections are respectively positioned on the L-shaped bases 21 of the other two clamping plates 22, so that the clamping plates 22 clamp the metal bent pipe 5; after the adjustment, the screw threads on the base mounting post 213 of the L-shaped base 21 are tightened with the lock nut 25.
The lifting mechanism 3 is then commissioned. The supporting mechanism 2 is matched and connected with the screw thread 311 of the screw rod 31 of the lifting mechanism 3 through the screw hole 242 in the center of the lower surface of the tray 24. The handle 36 is rocked, the handle 36 is connected with the worm 33, the worm 33 and the worm wheel 32 are in threaded transmission, and the worm wheel 32 and the lead screw 31 are in threaded transmission, so that the height of the supporting mechanism 2 connected with the lead screw and the direction of the bending central angle of the bent pipe are adjusted; when the supporting mechanism 2 reaches a certain height and the bending center angle position to be measured of the bent pipe 5 is opposite to the measuring mechanism 1, the clamping block 301 is clamped into one groove 371 of the locking device 37, so that the supporting mechanism 2 is kept at a certain height, and the measuring precision is improved.
The measuring mechanism 1 is readjusted. Firstly, respectively adjusting the heights of cylinder bodies 15 at two sides, and simultaneously sliding a sliding block 13 to enable an infrared range finder 14 to be aligned with a datum line 243 of a tray 24, so that a cross beam 11 and a guide rail 12 are in a horizontal state; then simultaneously adjusting the cylinder bodies 15 at the two sides to ensure that the height of the infrared range finder 14 is consistent with the height of the central line of the metal bent pipe 5 to be measured. The length of the rail 12 is then adjusted so that the length of the rail 12 meets the travel of the infrared rangefinder 14.
And after the debugging is finished, starting measurement. The sliding block 13 slides from one side of the metal bent pipe 5 to be measured to the other side, and meanwhile, the infrared distance meter 14 scans the distance on the center line of the inner side of the bending of the metal bent pipe 5, so that the bending radius and the bending angle of the metal bent pipe 5 can be measured, data are transmitted to the processing center 4, and the bending radius rebound value and the bending angle rebound value of the bent pipe 5, namely the bending rebound precision, can be obtained by comparing the data with the bending radius and the bending angle of the bent pipe 5 which are actually required.
The bending rebound measurement device for the metal pipe fitting, which is disclosed by the embodiment, is characterized in that the guide rails are combined, the number of the guide rails can be increased or reduced according to the movement stroke required by measurement of the infrared range finder, the length of the cross beam can be changed according to the requirement, so that the rebound accuracy measurement device is suitable for rebound accuracy measurement of different bending radiuses and bending angles, and the device is simple and flexible to operate and high in universality. The installation angle of the second support guide rail and the tray can be adjusted at will, so that the method is suitable for rebound accuracy measurement of the bent pipe with any bending angle; as the rectangular groove is processed at the outer end, the mounting position of the L-shaped base on the support guide rail can be adjusted, so that the method is suitable for measuring rebound precision of bent pipes with different bending radiuses. The third guide rail is designed into a hollow structure, and the tray is designed into a frame type hollow structure, so that the dead weight is reduced, and the stability of the mechanism can be improved; meanwhile, the deformation of the guide rail and the tray can be reduced due to light weight, and the measurement accuracy of the device is improved. And fourthly, the handle is rocked to drive the worm, the worm is driven to the worm wheel and then is driven to the screw, and after the height of the screw is adjusted to meet the requirements, the clamping block is clamped into one of the grooves of the locking device, so that the screw is kept at a certain height, and the measurement accuracy is improved. The handle is fixedly connected with the worm, the worm is in threaded transmission with the worm wheel, and the worm wheel is in threaded transmission with the screw rod, so that the structure is stable. Bearings are arranged on the upper side and the lower side of the worm wheel, so that the running stability of the mechanism can be improved, and meanwhile, the abrasion is reduced. And fifthly, the cylinder body can move up and down by controlling the two ventilation holes of the cylinder body, so that the up-and-down position of the rebound accuracy measuring mechanism can be adjusted. The sliding block slides at the bottom of the guide rail to drive the infrared distance meter to move on the guide rail, so that the horizontal position of the measuring mechanism can be adjusted. The sixth torsion spring provides clamping force, so that the clamping plate clamps the bent pipe to be measured, the bent pipe is prevented from sliding, and the measurement accuracy is improved. The upper cover is arranged above the shell and fixedly connected with the shell through screws so as to prevent sundries such as dust and the like from entering the installation cavity of the worm wheel, and the service life of the mechanism can be prolonged.
Claims (3)
1. The device for measuring the bending rebound of the metal pipe fitting is characterized by comprising a positioning module and a processing center (4) which are arranged on a workbench (302), and a measuring mechanism (1) which is arranged opposite to the positioning module; the positioning module comprises a lifting mechanism (3) and a supporting mechanism (2) arranged on the lifting mechanism (3); the processing center (4) is in signal connection with the measuring mechanism (1);
The measuring mechanism (1) comprises a cross beam (11), a guide rail (12), a sliding block (13), an infrared range finder (14), a cylinder body (15), a cylinder body upper cover (16), a cylinder body lower cover (17) and a cylinder piston (18); wherein, two ends of the beam (11) are respectively connected with the upper cover (16) of the cylinder body; the bottom of the cylinder body upper cover (16) is provided with a cylinder body (15), and the bottom of the cylinder body (15) is provided with a cylinder body lower cover (17); the cylinder piston (18) passes through the bottom of the cylinder body lower cover (17) and is then arranged in the cylinder body (15); the bottom of the cylinder piston (18) is fixedly connected with the operating platform; the bottom of the cross beam (11) is provided with a guide rail (12), the bottom of the guide rail (12) is movably provided with a sliding block (13), and the sliding block (13) is provided with an infrared range finder (14);
The supporting mechanism (2) comprises an L-shaped base (21), a clamping plate (22), a bracket guide rail (23) and a tray (24); wherein, a bracket guide rail (23) is arranged on the tray (24), and an L-shaped base (21) is arranged on the bracket guide rail (23); the clamping plate (22) is arranged on the L-shaped base (21), and a torsion spring is arranged in the joint of the L-shaped base (21) and the clamping plate (22);
The lifting mechanism (3) comprises a workbench (302) and a screw rod (31), and the workbench (302) is arranged on the operating platform; the workbench (302) is provided with a shell (38), 2 bearings (34), 1 worm wheel (32) and 1 worm (33) are arranged in the shell (38), and the worm wheel (32) is arranged between the 2 bearings (34); the worm wheel (32) is in threaded connection with the worm (33); an upper cover (39) is arranged on the shell (38), and a screw nut (35) is arranged below the workbench (302); the screw rod (31) sequentially passes through the upper cover (39), the bearing (34) and the worm wheel (32) in the shell (38), the workbench (302) and the screw rod nut (35) from top to bottom; and the screw rod (31) is sleeved with a screw rod protective sleeve (303); the worm wheel (32) is in threaded connection with the screw rod (31); the worm (33) is fixedly connected with the handle (36) through an inner hexagon nut; the handle (36) is provided with a locking device (37), and the locking device (37) is arranged on the outer side wall surface of the shell (38);
the measuring mechanism is characterized in that a first dovetail groove (111) for installing a guide rail (12) is formed in the bottom of a cross beam (11) in the measuring mechanism (1), a second dovetail groove (131) is formed in the middle of the upper surface of a sliding block (13), and dovetails (121) are respectively formed at the upper end and the lower end of the guide rail (12); the second dovetail groove (131) of the sliding block (13) is matched and connected with the lower dovetail (121) of the guide rail (12); the upper end dovetail (121) of the guide rail (12) is matched and connected with the first dovetail groove (111) of the cross beam (11);
A threaded hole (161) is formed in one side of the upper part of the cylinder body upper cover (16), threads (112) are formed at two ends of the cross beam (11), and the threads (112) on the cross beam (11) are in threaded connection with the threaded hole (161) on the cylinder body upper cover (16);
An upper cover mounting platform (162) is mounted at the bottom of the cylinder upper cover (16), and more than 1 upper cover screw mounting holes (163) are uniformly distributed on the upper cover mounting platform (162); the upper part of the cylinder body lower cover (17) is provided with a lower cover mounting platform (172), and more than 1 lower cover screw mounting holes (173) are uniformly distributed on the lower cover mounting platform (172); the upper end of the cylinder body (15) is arranged in an upper cover mounting platform (162) of a cylinder body upper cover (16) and is screwed and connected with an upper cover screw mounting hole (163) through a screw, and the lower end of the cylinder body (15) is arranged in a lower cover mounting platform (172) of a cylinder body lower cover (17) and is screwed and connected with a lower cover screw mounting hole (173) through a screw;
A cylinder piston mounting hole (171) is formed in the middle of the bottom of the cylinder body lower cover (17); the upper end of the cylinder piston (18) passes through the cylinder piston mounting hole (171) and then is mounted in the cylinder body (15), and the bottom of the cylinder piston (18) is fixedly connected with the operating platform;
a cylindrical infrared range finder mounting table (132) is mounted in the middle of the lower bottom surface of the sliding block (13), and 2 infrared range finder threaded mounting holes (133) are formed in the mounting table (132); the infrared range finder (14) is fixedly connected with an infrared range finder thread mounting hole (133) of a cylindrical infrared range finder mounting table (132) on the sliding block (13) through a screw;
the guide rail (12) is formed by splicing and combining more than 1 guide rail sections with the same size;
The guide rail (12) is of a hollow structure;
two ventilation holes (151) are formed in the cylinder body (15);
A fourth through hole (231) is formed in the inner end of the support guide rail (23) in the support mechanism (2), and a rectangular groove (232) for installing the L-shaped base (21) is formed in the outer end of the support mechanism;
More than 1 mounting columns (241) are arranged on the upper surface of the tray (24), and threads are machined at the upper ends of the mounting columns (241); a threaded hole (242) for threaded connection with a screw rod (31) on the lifting mechanism (3) is formed in the center of the lower surface of the tray (24); the periphery of the tray (24) is provided with a datum line (243) for adjusting levelness; the mounting column (241) passes through the fourth through hole (231) of the bracket guide rail (23) and then is in threaded connection with the internal thread of the lock nut (25);
The upper surface of the L-shaped base (21) is provided with a mounting platform (211) and a fourth mounting hole (212) of a clamping plate (22), a base mounting column (213) is mounted in the middle of the bottom of the L-shaped base (21), and threads are machined at the outer end of the base mounting column (213); the clamping plate (22) is hinged with a fourth mounting hole (212) on a mounting platform (211) of the L-shaped base (21) through a pin; the base mounting column (213) passes through the rectangular groove (232) of the bracket guide rail (23) and then is connected with the internal thread of the lock nut (25) in a threaded manner.
2. The device for measuring the bending rebound of the metal pipe fitting according to claim 1, wherein more than 1 groove (371) is formed on the end face of a locking device (37) in the lifting mechanism (3), a clamping block (301) is arranged in the groove (371), and more than 1 first mounting holes (372) for being fixedly connected with a shell (38) are formed around the locking device (37); a first through hole (373) for passing a handle (36) is formed in the middle of the locking device (37);
The shell (38) comprises a mounting platform (384), a mounting bearing (34) and a mounting cavity (381) of the worm wheel (32) are mounted on the mounting platform (384), and a second through hole (382) for mounting the screw rod (31) is formed in the middle of the mounting cavity (381) of the shell (38); a second mounting hole (383) for mounting the worm (33) is formed in the side edge of the mounting cavity (381), a third through hole (385) fixedly connected with the workbench (302) is formed in the mounting platform (384), and the mounting platform (384) is fixedly connected with the workbench (302) through screws by the aid of the third through hole (385);
More than 1 third mounting holes (391) are formed in the periphery of the upper cover (39), and the upper cover (39) is fixedly connected with the shell (38) through screws by the aid of the third mounting holes (391);
The upper end of the screw rod (31) is provided with a thread (311) matched with the supporting mechanism.
3. A metal pipe bending resilience measuring device according to claim 1, characterized in that the processing center (4) is connected with the infrared distance measuring instrument (14) by wireless signals.
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| CN201910987535.5A CN110779468B (en) | 2019-10-17 | 2019-10-17 | Bending rebound measuring device for metal pipe fitting |
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| CN201910987535.5A CN110779468B (en) | 2019-10-17 | 2019-10-17 | Bending rebound measuring device for metal pipe fitting |
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| CN110779468B true CN110779468B (en) | 2024-05-07 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111272108B (en) * | 2020-02-25 | 2024-05-17 | 浙江工业大学之江学院 | Bending angle and rebound precision measuring device for plane bent pipe |
| CN111272107B (en) * | 2020-02-25 | 2024-06-14 | 浙江工业大学之江学院 | Measuring mechanism for measuring bending angle and rebound precision of bent pipe |
| CN111272109B (en) * | 2020-02-25 | 2024-05-24 | 浙江工业大学之江学院 | Bending angle and rebound precision measuring device for space continuous bent pipe with straight line segments |
| CN111272064B (en) * | 2020-02-25 | 2024-05-28 | 浙江工业大学 | Quick detection device of resilience precision of space return bend with straightway |
| CN111272106B (en) * | 2020-02-25 | 2024-05-17 | 浙江工业大学之江学院 | Space measuring device for bending angle and rebound precision of bent pipe |
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