CN102620872B - Sensor for measuring rotary machining torque and axial force - Google Patents
Sensor for measuring rotary machining torque and axial force Download PDFInfo
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- CN102620872B CN102620872B CN 201210068894 CN201210068894A CN102620872B CN 102620872 B CN102620872 B CN 102620872B CN 201210068894 CN201210068894 CN 201210068894 CN 201210068894 A CN201210068894 A CN 201210068894A CN 102620872 B CN102620872 B CN 102620872B
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Abstract
The invention discloses a sensor for measuring rotary machining torque and axial force. A strain measuring principle is adopted, and the sensor is mainly used for measuring the torque and the axial force in a rotary machining process. The sensor consists of an elastic element (3), a bottom plate (1), a workpiece clamping device, a shell (4), a rubber protecting cover (5), positioning pins, screws and a plug (10), and is characterized in that: the elastic element is an integrally machined workpiece with a four-beam and four-post structure and respectively comprises an upper circular ring (a), four posts (b), a transition round disc (c), four beams (d) and a lower circular ring (e), wherein the four posts are respectively connected with the upper circular ring and the transition round disc to form the four beams of which the two ends are fixed mechanically, and are used for measuring the torque; and the four beams are respectively connected with the lower circular ring and the transition round disc to also form the four beams of which the two ends are fixed mechanically, and are used for measuring the axial force. The structure has high sensitivity and high eccentric load resistance, and can meet the requirements of different measurement ranges, different sensitivities and inherent frequency.
Description
Technical field
Patent of the present invention belongs to surveying instrument, is specifically related to a kind of sensor that turns round in-process gaging moment of torsion and axial force.
Background technology
In research boring, tapping, in vibrating drill, the vibrating and tapping, need to measure moment of torsion and the axial force of processing, at present, the method for axial force of measuring axial force, tapping torque and the tapping of drilling moment and drilling has strain-type and piezoelectric type.The piezoelectric type survey sensor has good rigidity, sluggish little, natural frequency advantages of higher, is fit to the measurement of various dynamic force and moments.But in the situation that measurement static state or the lower measuring accuracy of frequency are not high.Strain gauge transducer is a kind of device that is widely used for ergometry and moment of torsion, and the difference of pressing flexible member has column type, drum type brake, radial, stud formula various ways.Column type and drum type brake are common flexible member forms, but when measuring little moment, exist the diameter wall thickness very little or cylinder of cylinder very thin, and natural frequency is low, is not suitable for moment of torsion and axial force that measuring vibrations adds man-hour; Because the restriction of shape can't address these problems by changing design parameter.The radial flexible member generally pastes foil gauge at spoke, measures axial force by shear stress.Stud formula flexible member is used for measuring moment of torsion, and some stud formula has substituted cylinder in order to solve the too thin problem of drum type brake barrel by several columns, measures the measurement of the shear stress realization moment on several columns with foil gauge; 4 studs of employing are also arranged, measure moment of torsion by measuring bending stress.If measure simultaneously moment of torsion and axial force, just the ability of unbalance loading is born in existence, a measured parameter sensitivity is low, the problems such as two measured parameter phases mutual interference.
Summary of the invention
In aperture boring, tapping and vibrating drill, vibrating and tapping, measure a measured parameter poor sensitivity of moment of torsion and axial force existence in order to solve traditional column type, thin-walled cartridge type sensor, the not enough problems such as carrying unbalance loading ability have been invented a kind of compound transducer that can directly measure moment of torsion and axial force.This sensor is based on the principle of strain measurement, and its flexible member adopts four beams, four post one-piece constructions.
The technical scheme that patent of the present invention adopts is: this sensor is comprised of flexible member, base plate, work holder, housing, preventing rubber cover, register pin, screw, plug.Flexible member is the whole workpiece of four beams, four rod structures; Four beams, four posts are the two ends fixed connection structure; Four posts are evenly distributed on the circle; The cross section of four posts is identical rectangle, and the long edge distribution circle of four column sections radially; One end of four posts is upper annulus, and the long limit of four column sections equates with the radial thickness of upper annulus, and four posts are being fixedly connected with of time processing with upper annulus; The other end of four posts is transition disks, and an end of transition disk is big disk, and the other end is concentric small column; Four posts also are being fixedly connected with of time processing with big disk in the transition disk; Small column on the transition disk also is being fixedly connected with of time processing with four beams, and four beams are evenly distributed on a plane vertical with the small column axle center, and the length direction of four beams along small column radially; The cross section of four beams also is rectangle, and the long limit of rectangle is vertical with the axis of small column; The other end of four beams is lower annulus, and lower annulus also is being fixedly connected with of time processing with four beams.Lower annulus and the base plate of flexible member are located by seam, connect by pin, screw.Work holder is comprised of piece-holder dish and clamping screw, and the piece-holder dish is the plectane with four convex edges, can be the plectane of cyclic convex edge also, and threaded hole is arranged on the convex edge, and four clamping screws are in threaded hole; The upper annulus of flexible member and piece-holder dish also are by the seam location, connect by pin, screw.Housing is a torus, and an end connects by the lower annulus of screw and flexible member, at housing plug is installed.For prevent workpiece add man-hour axial force and moment be delivered to base plate by housing, affect sensor accuracy, be a preventing rubber cover between housing and the Workpiece clamping device.End at four posts posts 4 strainometers or 8 strainometers, is connected into full-bridge and is used for measuring moment of torsion; Four beams post 4 strainometers or 8 strainometers near lower annulus one end, are used for measuring axial force.Two strain bridge circuit and plug connection are sent into information in the secondary instrument and to be processed.
The present invention has following characteristics:
1. the elastic body that will measure moment of torsion separates with the elastic body of measuring axial force, can reduce influencing each other, and two measured can reach suitable sensitivity;
2. adopt four rod structures, because the distribution circle diameter of four posts is larger, increased the bendind rigidity of sensor, when measuring little moment of torsion, bear the unbalance loading ability and strengthen;
3. adopt the method for optimal design to change height, sectional dimension and the distribution circle diameter of four posts, change the length, sectional dimension of four beams etc., sensor just can satisfy different measurement ranges, different sensitivity and the requirement of natural frequency.
Description of drawings
Fig. 1 is the structure longitudinal sectional drawing of patent working example of the present invention in the accompanying drawing.
Fig. 2 is that the A-A of Fig. 1 is to sectional view.
Fig. 3 is that the B-B of Fig. 1 is to cut-open view.
Among the figure: 1. base plate 2. bottom plate screws 3. flexible members 4. housings 5. preventing rubber covers 6. piece-holder dishes 7. clamping screws 8 clamping disk screws 9. clamping disk pins 10. plugs 11. bottom plate pins 12. housing gib screws
Embodiment
Be described in further detail below in conjunction with structure and the principle of work of accompanying drawing to patent of the present invention.
Embodiment, the structure of the present embodiment is seen accompanying drawing.Structure comprises flexible member 3, base plate 1, piece-holder dish 6, housing 4, preventing rubber cover 5, plug 10,4 bottom plate screws 2 and two bottom plate pins 11,4 clamping disk screws 8 and two clamping disk pins 9,4 housing gib screws 12.Flexible member is a whole workpiece; Be comprised of four post b, four beam d, upper annulus a, transition disk c, lower annulus e respectively, owing to being that integral body processes, four post b are formed by the line cutting processing by an annulus, and the internal diameter of annulus, external diameter are identical with upper annulus; Because be whole processing, four posts are fixedly connected with upper annulus, transition disk, formed the fixing beam in two ends in 4 mechanics; Equally, four beams that are connected with transition disk small column also form a fixed connection with transition disk, lower annulus, also form beam with both ends built-in in 4 mechanics.Flexible member is connected with base plate 1, and flexible member and base plate rotational-torsional when preventing from reversing with bottom plate pin 11 axially connect with bottom plate screw 2.Flexible member and piece-holder dish 6 connect by clamping disk screw 8 by clamping disk pin 9 transmitting torques.Housing 4 is connected with flexible member by housing gib screw 12 in order to protect and install plug 10.End at four posts posts 8 strainometers, is connected into full-bridge and is used for measuring moment of torsion; Four beams post 8 strainometers near lower annulus one end, are used for measuring axial force.Two strain bridge circuit and plug connection are sent into information in the secondary instrument and to be processed.
During measurement, test specimen is placed on the piece-holder dish, regulates 4 clamping screws 7 test specimen is clamped.Four post b in the flexible member are used for measuring moment of torsion, when the tool sharpening test specimens such as screw tap, drill bit, apply a moment to test specimen, and this moment is delivered on the flexible member by clamping device; Because four post distortion in the flexible member, the upper annulus of flexible member produces angular displacement with respect to transition circle coiling center, four post two ends in the flexible member all are fixedly connected with, the structural symmetry of each post, distortion after stressed also is symmetrical, carry out force analysis from middle incision of post, half of post is exactly the stress model of a semi-girder.The stiff end of semi-girder is the position of stress maximum, and strainometer reserves the position of a processing radius of corner with regard to the end that is attached to beam.With semi-girder slightly different be to also have a very little plane torsion distortion on each post, the results show is should distortion very little on the sensor accuracy impact.Apply an axial force to test specimen equally when the tool sharpenings such as screw tap, drill bit, this axial force is delivered on the flexible member by clamping device, is delivered on four beam d by the upper annulus a of flexible member, four post b, transition disk c; Four beams also are that two ends are fixed, the beam of structural symmetry, cut from the centre of each beam that to carry out force analysis also be a semi-girder open, and the cross section of stress maximum is at stiff end; Because the restriction in paster space, 8 foil gauges are attached on the lower annulus e one end of four beams.Four posts also produce strain when transmitting axial force, under responsive to axial force, should change direction on four posts is identical, cancels out each other in strain bridge, and axial force is very little on the torque measurement impact.In order to prevent that extraneous dust, smear metal etc., need to be partially enclosed with gauge circuit on the impact of gauge circuit, enclosure portion of the present invention has adopted unitized construction; For plug 10 is installed, and at carrying, convenient operation when installing, housing 4 has adopted metal material; The impact of guard section has been adopted the TR thin rubber ring seal between housing 4 and the piece-holder dish 6 when transmitting in sensor in order to reduce moment of torsion and axial force.
Claims (1)
1. measure the sensor that moment of torsion and axial force are processed in revolution for one kind, comprise that flexible member (3), base plate (1), work holder, housing (4), preventing rubber cover (5), register pin, screw, plug (10) form, it is characterized in that: flexible member is the whole workpiece of four beams, four rod structures; Four posts (b) are evenly distributed on the circle; The cross section of four posts is identical rectangle, and the long edge distribution circle of four column sections radially; One end of four posts is upper annulus, and the long limit of four column sections equates with the radial thickness of upper annulus; The other end of four posts is transition disk (c), and an end of transition disk is big disk, and the other end is concentric small column; Four beams are evenly distributed on a plane vertical with the small column axle center, and the length direction of four beams along small column radially; The cross section of four beams also is rectangle, and the long limit of rectangle is vertical with the axis of small column; The other end of four beams is lower annulus (e); The lower annulus (e) of flexible member is located by seam with base plate, connects by pin, screw; Work holder is comprised of piece-holder dish (6) and clamping screw (7), and the piece-holder dish is the plectane with four convex edges, can be the plectane of cyclic convex edge also, and threaded hole is arranged on the convex edge, and four clamping screws are in threaded hole; The upper annulus (a) of flexible member also is by the seam location with the piece-holder dish, connects by pin, screw; Housing is a torus, and an end connects by the lower annulus of screw and flexible member, at housing plug is installed; It is a preventing rubber cover between housing and the Workpiece clamping device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210068894 CN102620872B (en) | 2012-03-08 | 2012-03-08 | Sensor for measuring rotary machining torque and axial force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210068894 CN102620872B (en) | 2012-03-08 | 2012-03-08 | Sensor for measuring rotary machining torque and axial force |
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| Publication Number | Publication Date |
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| CN102620872A CN102620872A (en) | 2012-08-01 |
| CN102620872B true CN102620872B (en) | 2013-10-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201210068894 Expired - Fee Related CN102620872B (en) | 2012-03-08 | 2012-03-08 | Sensor for measuring rotary machining torque and axial force |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103743502B (en) * | 2013-12-11 | 2016-04-13 | 西安交通大学 | A kind of pressure resistance type rotates two component Milling Force sensors |
| CN104132042B (en) * | 2014-07-28 | 2017-02-15 | 南车株洲电力机车有限公司 | Suspension sensor positioning structure |
| CN106197786B (en) * | 2016-03-14 | 2018-12-07 | 山东大学 | A kind of test device and method of extract real-time drilling torque signal |
| CN111649853A (en) * | 2020-06-22 | 2020-09-11 | 天津大学 | Micro-torque measuring device based on torque sensor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0553031A1 (en) * | 1992-01-24 | 1993-07-28 | Regie Nationale Des Usines Renault S.A. | Procedure for misfire detection in an internal combustion engine |
| EP0887135A1 (en) * | 1997-06-19 | 1998-12-30 | Emuge-Werk Richard Glimpel Fabrik für Präzisionswerkzeuge (vormals Moschkau & Glimpel) | Chuck for rigid tapping |
| CN101221093A (en) * | 2007-12-28 | 2008-07-16 | 天津百利二通机械有限公司 | Self-loading test mechanism of multi-slewing valve electrical device |
| CN201926527U (en) * | 2010-11-18 | 2011-08-10 | 东南大学 | Six-dimensional force sensor |
-
2012
- 2012-03-08 CN CN 201210068894 patent/CN102620872B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0553031A1 (en) * | 1992-01-24 | 1993-07-28 | Regie Nationale Des Usines Renault S.A. | Procedure for misfire detection in an internal combustion engine |
| EP0887135A1 (en) * | 1997-06-19 | 1998-12-30 | Emuge-Werk Richard Glimpel Fabrik für Präzisionswerkzeuge (vormals Moschkau & Glimpel) | Chuck for rigid tapping |
| CN101221093A (en) * | 2007-12-28 | 2008-07-16 | 天津百利二通机械有限公司 | Self-loading test mechanism of multi-slewing valve electrical device |
| CN201926527U (en) * | 2010-11-18 | 2011-08-10 | 东南大学 | Six-dimensional force sensor |
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Granted publication date: 20131023 Termination date: 20140308 |