CN88202473U

CN88202473U - Combined linear induction synchronizer with absolute zero position

Info

Publication number: CN88202473U
Application number: CN 88202473
Authority: CN
Inventors: 刘一鸣
Original assignee: SHANGHAI LEVEL METER FACTORY
Current assignee: SHANGHAI LEVEL METER FACTORY
Priority date: 1988-03-28
Filing date: 1988-03-28
Publication date: 1988-12-07

Abstract

The utility model relates to a linear induction synchronizer with absolute zero position, which comprises a fixed ruler base with a slipway, a plurality of normal fixed rulers fixed on the fixed ruler base, a slide ruler base, a slide ruler fixed on the slide ruler base, a slide block confined in the slipway and a zero position device which can send forth zero position signal and comprises a Hall switch. A sealed protective cover is added out of the fixed ruler. The utility model is made into an integral body, which makes users omit most of work such as mounting, lengthening, adjusting, etc.; the linear induction synchronizer with absolute zero position can also carry out error correction by matching with a microcomputer data display meter for obtaining more accurate displacement measuring values.

Description

Combined linear induction synchronizer with absolute zero position

The utility model relates to a kind of linear inductosyn, relates in particular to a kind of assembly type linear inductosyn with absolute zero position.

Figure 1 shows that a kind of present widely used linear inductosyn, it comprise by scale seat 1 and be fixed on scale assembly 3 that the scale 2 on the scale seat 1 forms, by slide rule seat 4 be fixed in the slide rule assembly 6 that the slide rule 5 on the slide rule seat 4 is formed.Scale winding 7 is arranged on the scale 2, on the relative face of slide rule 5 and scale winding 7 slide rule winding (not shown) is arranged.One of two windings, for example the slide rule winding passes to field voltage, then on another winding, for example just obtains induced potential on the scale winding.Slide rule one moves, and the induced potential on the scale winding just changes, and this induced potential is amplified inductosyn digital display meter (not shown) of back input, through handling the displacement that just can obtain slide rule.The effect of protective cover 8 is to prevent that greasy dirt, dust etc. from falling on the scale.

Usually, the installation of each member and spreading are all finished by user oneself in the inductosyn.Because inductosyn is the quite high surveying instrument of a kind of precision, thereby the requirement of its installation and spreading is very high, has not proper and convenient meeting to have a strong impact on the precision of instrument in the installation slightly.So the installation of instrument and spreading are to more difficult work of user Lai Shuoshi.Much more very the protective cover of instrument also must be manufactured and designed and installed by user oneself, inconvenience.

In order further to improve the accuracy of measuring, can adopt the microcomputer digital display meter measured value to be carried out error correction according to graph of errors.Like this, just must determine the start position of error correction, promptly on scale, determine a fixing actual zero point position.

The purpose of this utility model is to provide a kind of linear inductosyn that has null-setting device.

The purpose of this utility model also is to provide a kind of modular linear inductosyn.

The purpose of this utility model also is to provide a kind of assembly type linear inductosyn that has null-setting device.

The method that realizes above-mentioned purpose is that a null-setting device that can send zero signal is set on the linear inductosyn that comprises scale assembly and slide rule assembly, this null-setting device comprises a field source element that can produce magnetic field on the assembly that is fixed in fixed, the slide rule assembly, thereby and correspondingly be fixed on and survey the detector that this magnetic field produces a zero signal on another assembly, both present positions should guarantee when scale and slide rule are in a certain relative position, detector can be experienced the field that described field source element produces, thereby produces zero signal.A microcomputer digital display meter is delivered in the output of described detector, and as trigger pip, the microcomputer digital display meter begins to do error correction after receiving this signal.Described null-setting device can be contained on any one linear inductosyn.

Decide described comprising, the linear inductosyn of slide rule assembly can be made following structure: described scale assembly comprise a scale seat that has a longitudinally extending slideway and many end to end each other with the slideway parallel in line and be fixed on the scale seat, the scale that has the scale winding on face, the slide rule winding comprises the slide rule that has the slide rule winding on slide rule seat and the face, the slide rule seat comprises interior attachment portion, outer attachment portion and the coupling part that is connected two attachment portions, slide rule is fixed on the interior attachment portion of slide rule seat, parallel with scale, and a face that has winding on the face that has winding on the slide rule and the scale parallel over against, at a distance of nearer, also fix a slide block on the interior attachment portion of slide rule seat, this slide block is limited in vertically sliding in the slideway.Fix a protective cover that comprises two cover bodies of working in coordination on the scale seat again, the seam parallel with scale that the slide rule seat passes two cover body cooperation places formation moves laterally.

Adopt said apparatus to bring very big facility to the user, because fixed, slide rule assembly has been made an integral body, the user need only be separately fixed at scale seat and slide rule seat on fixed part and the movable member and can measure, and has saved the preparation of the required in the past scale spreading of doing, various adjustment work and protective cover and installment work or the like.Particularly importantly, after being provided with null-setting device, available microcomputer digital display meter carries out error correction to measured value, thereby obtains displacement measurement more accurately.

Specifically describe a most preferred embodiment of the present utility model hereinafter with reference to accompanying drawing, therefrom also can find out some other purpose of the utility model and advantage, wherein:

Fig. 1 is the general assembly drawing of existing linear inductosyn.

Fig. 2 A is the transverse sectional view of linear inductosyn of the present utility model.

Fig. 2 B be among Fig. 2 A A-A ' to cut-open view.

Fig. 3 is the vertical view that linear inductosyn of the present utility model is partly analysed and observe.

At first referring to Fig. 2 A, this is a linear inductosyn cut-open view of the present utility model.Wherein, the scale assembly scale seat 2 that comprises the slideway 1 that has vertical paper be fixed on scale seat 2 on the scale 3 parallel with slideway; The slide rule assembly comprises slide rule seat 4, have a face parallel with a face of scale 3 over against slide rule 5 and be in strip slide block 6 in the slideway 1.Slide rule seat 4 comprises interior attachment portion 7, coupling part 8 and outer attachment portion 9, has fixed slide rule 5 on interior attachment portion 7 tops, and slide block 6 has been fixed in the bottom.Have a plurality of sulculuses 10 and aperture 11 on the slide block 6, a kind of elastic body 12 is housed in the sulculus 10, sheet spring for example, withstand the extension of scale 3, elastic body 13 is housed, for example spring in the aperture 11, and small ball 14, it is roughly isometric and be fixed on strip press strip 15 on the scale seat 2 with slideway 1 to withstand the right, and slide block 6 posts the lower strip material of friction factor on two faces of slideway 1, for example teflon.The extension of scale 3 and press strip 15 compress sheet spring 12 and the little spring 13 in the sulculus respectively, thereby slide block 6 tightly is pressed on the slideway 1, make its can not about, move up and down.The outer attachment portion 9 of slide rule seat 4 comprises first 16 and second portion 17, and the both sides of sheet spring 18 are fixed with screw and two parts 16 and 17, thereby have realized both " soft connection ".Second portion 17 is to be used for fixing at need to measure on the moving-member of its displacement, the not parallel and measuring error of generation of the mobile alignment that moving-member has been eliminated in " the soft connection " that forms with sheet spring 18 to a certain extent and slideway 1.

On scale 3, be provided with a magnet 19 as the field source element near starting point, its magnetic pole is over against the Hall element 20 as detector, this sensor 20 can adopt the Hall integrated circuit of multiple model, UGN3040u for example, Hall element 20 is welded on the bar printing wiring board 21 that is fixed on the slide block 6.

Also fixed protective cover 22A and 22B on the scale seat 2, two cover bodies form a slit that is parallel to slideway at 8 places, coupling part of slide rule seat 4, hold slide rule 4 and do laterally to slide.On the cover body of seam crossing both sides, post sealing strip 23A and 23B, the slit beyond the coupling part 8 is sealed, further improved sealing, but slide block 4 is not produced great resistance.

The interior attachment portion 7 of slide rule seat 4, coupling part 8 and outside leave a plurality of coherent aperture (not shown)s in the first 16 in the attachment portion 9, the lead that connects Hall switch 20 enters in the hollow component 24 that is fixed in the first 16 by aperture.

Referring to Fig. 2 B, this be among Fig. 2 A A-A ' to cut-open view, shown a kind of shape of sheet spring 12 and sulculus 10 among the figure.Sheet spring 12 two ends withstand in the sulculus 10, and median rise is to withstand the extension of scale 3 among Fig. 2 A.A plurality of such sulculuses and sheet spring can be set on the slide block 6.

Referring now to Fig. 3,, this is the vertical view that linear inductosyn of the present utility model is partly analysed and observe at slide rule.The opening part of the hollow component 24 in Fig. 2 has been fixed a socket 25, and the lead that connects Hall switch inserts socket 25.The lead 26 that connects slide rule winding (not shown) on the slide rule 5 is also linked socket 25 by the aperture in the slide rule seat 4.At the protective cover two ends two end cap 28A, 28B that are fixed on the scale seat are arranged, connect the aperture that the lead (not shown) of the scale 3 upper fixed ruler windings 27 that many conventional scales serial connections form passes among the end cap 28A and insert the socket 29 that is fixed on the end cap.Described field source element can be fixed on suitable local (not shown) on the linear induction actuator left end scale.

The part of analysing and observe on 5 jiaos of the slide rules has shown that slide rule seat 4 sees Fig. 2 with slide rule 5 and slide block 6() method of attachment.Screw 30 is fixed on slide block 6 on the

slide rule seat

4, and 31 of screws are used for the fixing of slide rule 5.Also be like this on another angle of slide rule seat 4.

The coupling part 8 both sides of the edge 32A and the 32B of slide rule seat 4 are wedge, to reduce the resistance of sealing strip, are convenient to slide rule seat 4 and laterally slide.

When using the utility model, scale seat 2 and slide rule seat 4 need only be separately fixed at not on the dynamic component and movable member, and in two

sockets

25,29, insert plug, finish being electrically connected.Drive slide rule seat 4 when movable member moves and go up fixing slide rule 5, slide block 6, if on the slide rule winding, add a field voltage, just can on scale winding 27, obtain the induced potential that the displacement with slide rule 5 changes, amplify microcomputer digital display meter of back input, in case be contained in the opposite of the magnet 19 of Hall switch 20 by being contained in scale 3 one ends on the slide block 6, promptly send a pulse signal, after the microcomputer digital display meter is received this signal, promptly begin the induced potential on the scale winding of being received 27 is handled, carry out error correction simultaneously, demonstrate shift value then.

More than described a preferred embodiment of the present utility model, purpose is to illustrate the utility model, and the utility model is not constituted any difficult system.Obviously, after understanding spirit of the present utility model, technician general in this area can make many modifications to present embodiment, but these scopes of the present utility model that do not exceed claims and limited.

Claims

1, a kind of inductosyn, it comprises scale assembly and slide rule assembly, it is characterized in that, it also comprises a null-setting device that can send zero signal, surveys the detector that magnetic field that described field source element sends produces a zero-bit electric signal thereby this null-setting device comprises a field source element that can produce magnetic field and one.

2, a kind of inductosyn as claimed in claim 1, it is characterized in that, described field source element is fixed on the assembly in scale assembly and the slide rule assembly, described detector correspondingly is fixed on another assembly, both present positions guarantee when scale and slide rule are in a certain relative position, detector can be experienced the magnetic field that described field source element sends, thereby produces the zero-bit electric signal.

3, a kind of inductosyn as claimed in claim 2 is characterized in that, described field source element is a kind of magnetic bodies, and described detector is a kind of Hall switch, and the external terminal of detector is linked a socket by lead.

4, a kind of inductosyn, it comprises scale assembly and slide rule assembly, it is characterized in that, described scale assembly comprise a scale seat that has a longitudinally extending slideway and many end to end each other with the slideway parallel in line and be fixed on the scale seat, the scale that has the scale winding on face, the slide rule assembly comprises the slide rule that has the slide rule winding on slide rule seat and the face, the slide rule seat comprises interior attachment portion, outer attachment portion and the coupling part that is connected two attachment portions, slide rule is fixed on the interior attachment portion of slide rule seat, parallel with scale, and a face that has winding on the face that has winding on the slide rule and the scale parallel over against, at a distance of nearer, also fixed a slide block on the interior attachment portion of slide rule seat, this slide block is limited in vertically sliding in the slideway.

5, a kind of inductosyn as claimed in claim 4, it is characterized in that, described slideway is on the angle of described scale seat, the part of described scale exceeds the sidewall of slideway, offside at this sidewall has a press strip that is fixed on the scale seat, and the extension of this press strip and scale is limited in slide block in the slideway.

6, a kind of inductosyn as claimed in claim 5, it is characterized in that, it is very low and do the material of thin slice into strips to post friction factor on the face of the relative slideway of described slide block, on the face of scale extension, have a plurality of sulculuses at slide block, elastic body is housed in the groove, withstand the extension of scale, have a plurality of apertures on the face of the relative press strip of slide block, elastic body and steel ball are housed in the hole, elastic body withstands on steel ball on the press strip, and the face that the bounce that scale extension and press strip produce slide block by the elastic body in the groove and the elastic body in the hole and small ball forces slide block to post the strip thin slice is close to slideway.

7, a kind of inductosyn as claimed in claim 4, it is characterized in that, described outer attachment portion comprises a first and the second portion that can be fixed on other objects, connect with an elastic reed between first and the second portion, the both sides of sheet spring are separately fixed on first and the second portion.

8, a kind of inductosyn as claimed in claim 4, it is characterized in that, it also comprises a protective cover roughly isometric with the scale seat, protective cover comprise be separately fixed on the scale seat work in coordination on, following two cover bodies, the slit of two cover body cooperation place formation is parallel to scale, slit is passed in the coupling part of slide rule seat, about slit, post the soft sealing strip roughly isometric on the cover body edge of both sides with slit, slit is sealed, the both sides of coupling part of passing the slide rule seat of slit are wedge, an end cap with the protective cover close fit is fixed at scale seat two ends respectively, two terminals of scale winding are linked a socket that is fixed on the end cap by lead, and two terminals of slide rule winding are also linked the socket that is fixed on the outer attachment portion by lead.

9, a kind of inductosyn, it comprises scale assembly and slide rule assembly, it is characterized in that, described scale assembly comprises that a scale seat that has a longitudinally extending slideway and many end to end each other and described slideway parallel are in line and be fixed on the scale seat, the scale that has the scale winding on face, the slide rule assembly comprises the slide rule that has the slide rule winding on slide rule seat and the face, the slide rule seat comprises interior attachment portion, outer attachment portion and the coupling part that is connected two attachment portions, slide rule is fixed on the interior attachment portion of slide rule seat, parallel with scale, and a face that has winding on the face that has winding on the slide rule and the scale parallel over against, at a distance of nearer, also fixed a slide block on the interior attachment portion of slide rule seat, this slide block is limited in vertically sliding on the slideway, described inductosyn also comprises a null-setting device, this null-setting device comprises a field source element that can produce magnetic field that is fixed on one of scale assembly and slide rule assembly, thereby correspondingly be fixed on and survey the detector that described magnetic field produces a zero signal on another assembly, the residing position of field source element and detector should guarantee when scale and slide rule are in a certain relative position, detector can be experienced described, thereby produces zero signal.

10, a kind of inductosyn as claimed in claim 9 is characterized in that, described field source element is a kind of magnetic bodies, and described detector is a kind of Hall switch, and this field source element is contained in the place of close starting point on the scale, and detector is contained on the slide block.

11, a kind of inductosyn as claimed in claim 9, it is characterized in that, described slideway is on the angle of described scale seat, the part of described scale exceeds the sidewall of slideway, offside at this sidewall has a press strip that is fixed on the scale seat, and the extension of this press strip and scale is limited in slide block in the slideway.

12, a kind of inductosyn as claimed in claim 11, it is characterized in that, it is very low and do the material of thin slice into strips to post friction factor on two faces of the relative slideway of described slide block, on the face of scale extension, have a plurality of sulculuses at slide block, elastic body is housed in the groove, withstand the extension of scale, have a plurality of apertures on the face of the relative press strip of slide block, elastic body and steel ball are housed in the hole, elastic body withstands on steel ball on the press strip, and the face that the bounce that scale extension and press strip produce slide block by the elastic body in the groove and the elastic body in the hole and small ball forces slide block to post the strip thin slice is close to slideway.

13, a kind of inductosyn as claimed in claim 9, it is characterized in that, described outer attachment portion comprises a first and the second portion that can be fixed on other objects, connect with an elastic reed between first and the second portion, the both sides of sheet spring are separately fixed on first and the second portion.

14, a kind of inductosyn as claimed in claim 9, it is characterized in that, it also comprises a protective cover roughly isometric with the scale seat, protective cover comprise be separately fixed on the scale seat work in coordination on, following two cover bodies, the slit of two cover body cooperation place formation is parallel to scale, slit is passed in the coupling part of slide rule seat, about slit, post the soft sealing strip roughly isometric on the cover body edge of both sides with slit, slit is sealed, the both sides of coupling part of passing the slide rule seat of slit are wedge, an end cap with the protective cover close fit is fixed at scale seat two ends respectively, two terminals of scale winding are linked a socket that is fixed on the end cap by lead, and two terminals of slide rule winding and the external terminal of detector are also linked the socket that is fixed on the outer attachment portion by lead.