CN1275022C - Linea encoder - Google Patents
Linea encoder Download PDFInfo
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- CN1275022C CN1275022C CN 03154536 CN03154536A CN1275022C CN 1275022 C CN1275022 C CN 1275022C CN 03154536 CN03154536 CN 03154536 CN 03154536 A CN03154536 A CN 03154536A CN 1275022 C CN1275022 C CN 1275022C
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- slide body
- sleeve
- connect mechanism
- sleeve bearing
- compressing
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- 230000007246 mechanism Effects 0.000 claims abstract description 95
- 229910000639 Spring steel Inorganic materials 0.000 claims abstract description 25
- 238000005096 rolling process Methods 0.000 claims abstract description 25
- 230000006835 compression Effects 0.000 claims abstract description 17
- 238000007906 compression Methods 0.000 claims abstract description 17
- 238000006073 displacement reaction Methods 0.000 claims description 11
- 238000005259 measurement Methods 0.000 claims description 8
- 238000002441 X-ray diffraction Methods 0.000 claims description 5
- 239000011324 bead Substances 0.000 abstract 1
- 239000011049 pearl Substances 0.000 description 28
- 230000003287 optical effect Effects 0.000 description 11
- 230000033001 locomotion Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 240000005308 Juniperus chinensis Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000005622 photoelectricity Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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Abstract
The present invention relates to a linear encoder and two compressing connection mechanisms thereof. The linear encoder comprises a main grating rule, a sliding bodies with two sleeve bearing seat initial cuts, a marking grating rule between the two sleeve bearing seat initial cuts, a circuit box and two sets of compressing connection mechanisms. Since two sets of compressing connection mechanisms are adopted, the marking grating ruler can be positioned between the two sleeve bearing seat initial cuts to increase the parallelism and gap stability between the marking grating ruler and the main grating ruler. The compressing connection mechanism comprises a spherical bead, a cylindrical sleeve, a compression spring and a spring steel wire, wherein the contact between the sleeve bearing seat initial cuts and the compressing connection mechanisms is either the contact of a cylinder and a plane or the contact of a sphere and a plane; the two kinds of contact are both rolling friction which can decrease frictional force.
Description
Technical field
The invention relates to a kind of linear encoder and a kind of compressing connect mechanism that is used for linear encoder.
Background technology
Optical encoder mainly comprises a key light grid chi, and one indicates a grating chi and a connect mechanism.Key light grid chi is fixed in a hollow aluminium extruded type, indicate the grating chi and then be fixed in another slide body, and this slide body utilizes this connect mechanism to be connected with another circuit box, and this connect mechanism also forces key light grid chi and indicates parallel orientation and the spacing that maintenance is allowed between the grating chi.This circuit box can move with respect to hollow aluminium extruded type shell, promptly drive the relative motion that indicates grating chi and key light grid chi via connect mechanism, utilize a branch of key light grid chi produces grating with indicating the grating chi diffraction effect of passing simultaneously this moment, via optical detector acquisition light intensity signal and after being converted to electric signal, promptly can be used for high-precision displacement examining system.
Optical encoder is the measuring element that is used to locate, so its bearing accuracy and the repeatable accuracy premiere feature that is optical encoder.For reaching this function, key light grid chi and the depth of parallelism and the gap that indicate between the grating chi must remain on an allowable value, to guarantee that optical detector can receive the photoelectricity signal with stabilized amplitude and phase place, provide subsequent conditioning circuit to handle and obtain relative motion distance accurately.
Because key light grid chi is organized respectively with sign grating chi and stood in the individual components, the depth of parallelism therebetween and gap must be kept by bindiny mechanism.Known connect mechanism is to link slide body 120 and circuit box with a spring steel wire 110 as shown in Figure 1, several rolling bearings 140 on the slide body 120 at this spring steel wire 110 and compressing sign grating chi 130 places make rolling bearing 140 be affixed to the front reference surface 152 and the end face reference surface 151 of key light grid chi 150 at the same time.So when circuit box and 150 relative motions of key light grid chi, just can reach the parallel orientation and the spacing that make key light grid chi 150 and indicate 130 relative motions of grating chi and keep allowing.
Yet, in the linear encoder mechanism, indicate the right side that grating chi 130, light source, lens and optical detector all place Fig. 1 slide body 120, therefore the mass centre of combination shown in M point among Fig. 1, and the acting force of spring steel wire 110 (downward F
CYAnd inside F
CZ) act on C point among the figure.When therefore this linear encoder being placed board, because acting force, the vibration of board ... etc. factor, make slide body 120 because of inertial force (F upwards
BYAnd outside F
BZ) and the trend that breaks away from key light grid chi 150 is arranged, and this inertial force can be considered and acts on above-mentioned mass centre.The rolling bearing in the lower left corner is a fulcrum in Fig. 1, considers the moment around Y-axis, then inertial force F
BYArm of force X
B1Permanent in the compression spring directed force F
CYArm of force X
C1, this factor makes linear encoder be unfavorable for resisting the influence of external environment, the scope of dwindling its use, and reduce bearing accuracy.
Moreover slide body 120 is close to 150 two end faces of outstanding key light grid chi via the compressing power of spring steel wire 110 by several rolling bearings 140, for the compressing power that makes spring steel wire 110 obtains best effects, the friction force that spring steel wire 110 links the slide body places need reduce, but and friction force reduce after also the buffer circuit box be subjected to the influence of external force.Contact with 118 with slide body both ends of the surface 116 at spring steel wire 110 front ends with a column type sleeve 114 and a compression spring 112 among Fig. 2, column type sleeve 114 contacts for cylinder rolls with slide body end face 116, friction force is less therebetween, but column type jacket casing 114 is the cylinder sliding contact with 118 of slide body end faces, friction force is bigger therebetween, is unfavorable for that slide body 120 and the orientation and the spacing of key light grid chi 150 keep.
When circuit box drives slide body 120 motions via spring steel wire 110, spring steel wire 110 can be subjected to frictional resistance and slide body 120 inertial force, the trend that therefore distortion is arranged, and this distortion can be unfavorable for that slide body 120 and the orientation and the spacing of key light grid chi 150 keep, and cause the influence of bearing accuracy.
Summary of the invention
Fundamental purpose of the present invention is to provide a kind of linear encoder, can reduce the stability influence of the inertial force of slide body to parallel orientation and spacing between key light grid chi and sign grating chi, increases the bearing accuracy of optical encoder.And the gap that produces in the time of can reducing linear encoder mechanism and seesaw is improved and is repeated measurement accuracy.
Another object of the present invention is to provide a kind of compressing connect mechanism of linear encoder,, to measuring the influence that is caused, increase the bearing accuracy of optical encoder when the buffer circuit box is subjected to external force can reduce spring steel wire to the friction force that slide body was produced.
For achieving the above object, linear encoder provided by the invention comprises:
One has the key light grid chi of a front reference surface and an end face reference surface;
One slide body has two sleeve bearing groovings and a plurality of rolling bearing, and this rolling bearing is affixed on this this front reference surface of key light grid chi or this end face reference surface, to move this slide body;
One indicates the grating chi, and the position cooperates this key light grid chi to produce an x-ray diffraction, with the Displacement Measurement distance between two sleeve bearing groovings of this slide body;
One circuit box has the protruded arm of two branch tool one grooves, and wherein this protruded arm is positioned at the bottom of this circuit box, so that this circuit box is fixed on this slide body; And
At least one compressing connect mechanism, it extends to the groove of this protruded arm of this circuit box by this sleeve bearing grooving of this slide body, makes this circuit box drive this slide body via this compressing connect mechanism and moves, and this slide body is affixed on this key light grid chi.
It is identical with two sleeve bearings of this slide body grooving distance wherein should to indicate the grating chi, makes this sleeve bearing grooving be symmetrical in this sign grating chi mutually.
Wherein the sleeve bearing grooving of this slide body also comprises a cover plate outward, comes off to prevent this compressing connect mechanism.
Wherein this compressing connect mechanism is two groups, and part is placed in two sleeve bearing groovings of this slide body respectively.
Wherein this compressing connect mechanism has a ball-type pearl, and the position is in this sleeve bearing grooving; One column type sleeve is coated on this ball-type pearl periphery; And a spring steel wire, the one end links to each other with the protruded arm of this circuit box, and the other end and this column type sleeve join.
Its meta has an inclined-plane at the bottom portion of groove of this protruded arm of this circuit box, the most approaching position, this inclined-plane has the darkest degree of depth at this compressing connect mechanism position of this sleeve bearing grooving, makes this compressing connect mechanism have a compressing power vertical with the front reference surface of this key light grid chi.
Wherein this groove of this circuit box is a tilting groove, and the normal direction that the vergence direction of this tilting groove is projected to the end face reference surface of this key light grid chi is towards this key light grid chi inside.
Wherein this compressing connect mechanism also comprises a compression spring, be positioned at this sleeve bearing grooving, and make this column type sleeve between this compression spring and this ball-type pearl, to oppress this column type sleeve, make this ball-type pearl in this column type sleeve withstand sleeve bearing grooving in this slide body.
Wherein be somebody's turn to do the degree of depth of the external diameter of the column type sleeve of oppressing connect mechanism less than the sleeve bearing grooving of this slide body.
Compressing connect mechanism provided by the invention cooperates a linear encoder, and wherein this linear encoder comprises that one has the key light grid chi of a front reference surface and an end face reference surface; One slide body has at least one sleeve bearing grooving and a plurality of rolling bearing, and this rolling bearing is affixed on this front reference surface or this end face reference surface of this key light grid chi, to move this slide body; One indicates the grating chi, and the position cooperates this key light grid chi to produce an x-ray diffraction, with the Displacement Measurement distance on this slide body; And a circuit box, its bottom has at least one protruded arm with groove, so that this circuit box is fixed on this slide body; This compressing connect mechanism comprises:
One ball-type pearl, the position is in this sleeve bearing grooving;
One column type sleeve is coated on this ball-type pearl periphery; And
One spring steel wire, between this column type sleeve and this protruded arm, the one end links to each other with the groove of the protruded arm of this circuit box, and the other end and this column type sleeve join, and this circuit box and this slide body are joined;
Wherein the two sides of the sleeve bearing grooving of this slide body contacts with this compressing connect mechanism, one side is that the sleeve bearing grooving of this slide body contacts with this column type sleeve, one side is that the sleeve bearing grooving of this slide body contacts with this ball-type pearl, and the friction force between this compressing connect mechanism and this slide body is reduced.
It also comprises a compression spring, be positioned at this sleeve bearing grooving, and make this column type sleeve between this compression spring and this ball-type pearl, to oppress this column type sleeve, make this ball-type pearl in this column type sleeve withstand sleeve bearing grooving in this slide body.
Wherein the external diameter of this column type sleeve is less than the degree of depth of the sleeve bearing grooving of this slide body.
This sleeve bearing grooving of wherein ccontaining this ball-type pearl and this column type sleeve is a rectangular recess.
Description of drawings
Fig. 1 is the stereographic map of known linear encoder and its connect mechanism;
Fig. 2 is the schematic perspective view of known linear encoder and its connect mechanism;
Fig. 3 is the synoptic diagram of linear encoder of the present invention and one preferred embodiment of its connect mechanism;
Fig. 4 is the schematic perspective view of linear encoder of the present invention and two preferred embodiments of its connect mechanism;
Fig. 5 is the moment distribution synoptic diagram of a preferred embodiment of linear encoder of the present invention;
Fig. 6 is the synoptic diagram of linear encoder of the present invention and its another preferred embodiment of connect mechanism;
Fig. 7 is the synoptic diagram of linear encoder of the present invention and its another preferred embodiment of connect mechanism.
Embodiment
Linear encoder of the present invention, comprise a key light grid chi, a slide body, one indicate grating chi, a circuit box, with at least one compressing connect mechanism, wherein this sign grating chi is preferably the central authorities between two sleeve bearing groovings of slide body, be more preferred from and use two groups of compressing connect mechanisms, it is with respect to the central symmetry of slide body, compressing strength with symmetry forces slide body to be affixed to key light grid chi, reduces the influence that inertial force causes.The sleeve bearing grooving of slide body of the present invention is preferably outward and comprises a cover plate, to prevent that oppressing connect mechanism comes off.The bottom portion of groove of circuit box of the present invention is preferably has an inclined-plane, and this inclined-plane is the darkest near the position degree of depth of sleeve bearing grooving, makes the compressing connect mechanism have a compressing power vertical with the front reference surface of key light grid chi.This groove also or be a valley makes groove the most nearest apart from the bottom of key light grid chi near the position of slide body, to produce a compressing power vertical with the end face reference surface of key light grid chi.The groove of this protruded arm is more preferred from and has above two characteristics concurrently, has the downward and inside compressing power with respect to key light grid chi to make the compressing connect mechanism simultaneously.
In the compressing connect mechanism of the present invention, comprise a ball-type pearl, a spring steel wire, with a column type sleeve, wherein this compressing connect mechanism is preferably and comprises a compression spring again, be positioned at sleeve bearing grooving, and make the column type sleeve between compression spring and ball-type pearl, to oppress this column type sleeve, make the interior ball-type pearl of column type sleeve withstand the sleeve bearing grooving of slide body.The external diameter of this column type sleeve is preferably the degree of depth less than the sleeve bearing grooving of slide body.And, can reduce the distortion that is caused because of the determinand vibrations because of spring steel wire is an interlinked mechanism, increase displacement and measure degree of accuracy.
Indicate the central authorities that grating chi, light source, lens and optical detector place slide body in the linear encoder, and when using two groups of compression mechanisms in slide body central authorities symmetry, compressing strength with symmetry forces slide body to be affixed to key light grid chi, reduce the inertia force influence that external shock causes, enlarge the scope of its use, and increase bearing accuracy.And use the ball-type pearl in the column type jacket casing above-mentioned sliding friction to be become rolling friction with the power of reducing friction, the orientation and the spacing that are beneficial to slide body and key light grid chi keep.And drive slide body with two groups of spring steel wires, can increase the rigidity of interlinked mechanism, reduce the influence of distortion, thereby increase bearing accuracy precision.
For more understanding technology contents of the present invention, be described as follows especially exemplified by three preferred embodiment.
Embodiment 1
Linear encoder of the present invention wraps the key light grid chi 2 that Chinese juniper one has a front reference surface 22 and an end face reference surface 21 as shown in Figure 3 in the present embodiment; One has the main casing 1 of a slotted eye 102, and wherein this slotted eye 102 is arranged at the bottom of main casing 1, and puts key light grid chi 2 on this slotted eye 102, makes the front reference surface 22 of key light grid chi 2 all non-towards main casing with end face reference surface 21; One slide body 8, have two sleeve bearing groovings 81, two cover plates 10, three rolling bearings 92 that contact with front reference surface 22, with two rolling bearings 91 that contact with end face reference surface 21, those rolling bearings 91,92 are affixed on the key light grid chi 2, make slide body 8 along key light grid chi 2 parallel moving; One indicates grating chi 11, and the position is symmetrical in sleeve bearing grooving 81 mutually and indicates grating chi 11 in the centre of two sleeve bearing groovings 81 of slide body 8, indicates grating chi 11 and cooperates key light grid chi 2 to produce diffraction effect, with the Displacement Measurement distance; One circuit box 3, its bottom has two protruded arms 31, so that circuit box 3 is fixed on the slide body 8; And two groups of compressing connect mechanisms 500, the one end device and utilizes cover plate 10 to prevent to oppress connect mechanism 500 to come off in the sleeve bearing grooving 81 of slide body 8, and the other end then is connected with the protruded arm 31 of circuit box 3.
In the present embodiment, the protruded arm 31 of circuit box 3 has a groove 311, divides compressing connect mechanism 500 with holding part; This groove 311 has a bottom surface that tilts, and the darkest near sleeve bearing grooving 81 partial depths of slide body 8, so that compressing connect mechanism 500 has a compressing power vertical with the front reference surface 2 ' 2 of key light grid chi 2; In addition, this groove 311 is near more near more its slotted eye 102 from main casing 1 of part of slide body 8 so that compressing connect mechanism 500 have one with the heavy straight compressing power of end face reference surface 21 of key light grid chi 2.
Two groups of compressing connect mechanisms 500 in the present embodiment comprise a ball-type pearl 7 in sleeve bearing grooving 81 respectively as shown in Figure 4, and it can freely rotate; One spring steel wire 4, the one end links to each other with the protruded arm of circuit box, and the other end contacts with column type sleeve 6, so that circuit box and slide body 8 are joined; One is coated on the column type sleeve 6 of ball-type pearl 7 peripheries, and can freely rotate; And the compression spring 5 of a compressing column type sleeve 6, make ball-type pearls 7 in the column type sleeve 6 withstand sleeve bearing grooving 81 in slide body 8.Two groove faces 821 of the sleeve bearing grooving 81 of the slide body 8 of present embodiment contact with compressing connect mechanism 500 with 811, one side 811 is that the sleeve bearing grooving 81 of slide body 8 contacts with column type sleeve 6, one side 821 is that the sleeve bearing grooving 81 of slide body 8 contacts with ball-type pearl 7, and the friction force of 8 of compressing connect mechanism 500 and slide body is reduced.In addition, the external diameter of the column type sleeve 6 of compressing connect mechanism 500 is less than the degree of depth of the sleeve bearing grooving 81 of slide body 8, and because the spring steel wire 4 of compressing connect mechanism 500 is an interlinked mechanism, can reduce the distortion that is caused because of the determinand vibrations, increase displacement and measure degree of accuracy.
Owing to use two compressing connect mechanisms 500,, increased by one group of moment that makes slide body 8 be affixed to key light grid chi, F as shown in Figure 5 in the present embodiment so same rolling bearing 92 with the lower left corner is a fulcrum
C2YX
C2With F
C2zX
C2, therefore can reduce the influence that inertial force causes, enlarge the scope of its use, and increase bearing accuracy.And because the contacting of 81 of sleeve bearing groovings on compressing connect mechanism 500 and the slide body 8, because sleeve bearing grooving 81 is a rectangular recess, so one is cylinder and plane contact, one is ball-type pearl and plane contact, both are rolling friction, and the friction force of 8 of compressing connect mechanism 500 and slide body is reduced, and are more free to rotate, to measuring the influence that is caused, increase the bearing accuracy of optical encoder when avoiding circuit box to be subjected to external force.
Linear encoder of the present invention is roughly identical with embodiment 1 in the present embodiment, and unique difference from Example 1 is compressing connect mechanism 500, as shown in Figure 6.
Two groups of compressing connect mechanisms 501 and 502 in the present embodiment, wherein one group 501 comprises a ball-type pearl (not being shown among the figure) in sleeve bearing grooving 81, it can freely rotate; One is coated on the column type sleeve 6 of ball-type pearl 7 peripheries, and can freely rotate; One spring steel wire 4, the one end links to each other with the protruded arm of circuit box (not being shown among the figure), and the other end links to each other with column type sleeve 6, so that circuit box and slide body 8 are joined; And the compression spring 5 of a compressing column type sleeve 6, make ball-type pearls 7 in the column type sleeve 6 withstand sleeve bearing grooving 81 in slide body 8; And another group 502 only comprises a ball-type pearl, a spring steel wire 4 and a column type sleeve 6, and its each interelement relative position is identical with compressing connect mechanism 501 with function.The two sides of the sleeve bearing grooving 81 of the slide body 8 of present embodiment contacts with 502 with compressing connect mechanism 501, one side is that the sleeve bearing grooving 81 of slide body 8 contacts with column type sleeve 6, one side be that the sleeve bearing grooving 81 of slide body 8 contacts with ball-type pearl 7, can make to oppress connect mechanism 501 and 502 and the friction force minimizing of 8 of slide body.In addition, the external diameter of compressing connect mechanism 501 and 502 column type sleeve 6 is less than the degree of depth of the sleeve bearing grooving 81 of slide body 8, and because the spring steel wire 4 of this compressing connect mechanism 501 and 502 is an interlinked mechanism, can reduce the distortion that is caused because of the determinand vibrations, increase displacement and measure degree of accuracy.
In the present embodiment owing to use two compressing connect mechanisms 500, so the rolling bearing 92 with the lower left corner is a fulcrum equally, the present invention increases by one group of moment that makes slide body 8 be affixed to key light grid chi 2, therefore can reduce the influence that inertial force causes, enlarge the scope of its use, and increase bearing accuracy.And compressing connect mechanism 501 with 502 with slide body 8 on the contacting of 81 of sleeve bearing groovings, because sleeve bearing grooving 81 is a rectangular recess, so one is cylinder and plane contact, be spheroid and plane contact, both are rolling friction, make compressing connect mechanism 501 and 502 and the friction force minimizing of 8 of slide body, and are more free to rotate, to measuring the influence that is caused, increase the bearing accuracy of optical encoder when avoiding circuit box to be subjected to external force.
Linear encoder of the present invention comprises that in the present embodiment one has the key light grid chi 2 of a front reference surface 22 and an end face reference surface 21 as shown in Figure 7; One has the main casing 1 of a slotted eye 102, and wherein this slotted eye 102 is arranged at the bottom of main casing 1, and puts key light grid chi 2 on this slotted eye 102, makes the front reference surface 22 of key light grid chi 2 all non-towards main casing with end face reference surface 21; One slide body 8, have a sleeve bearing grooving 81, three rolling bearings 92 that contact with front reference surface 22, with two rolling bearings 91 that contact with end face reference surface 21, those rolling bearings 91,92 make slide body 8 along key light grid chi 2 parallel moving; One indicates grating chi 11, and the position is in a side of slide body 8, and this sign grating chi 11 cooperates key light grid chi 2 to produce an x-ray diffraction, with the Displacement Measurement distance; One circuit box, its bottom has a protruded arm, circuit box is fixed on the slide body 8; And one group of compressing connect mechanism 500, the one end device is in the sleeve bearing grooving 81 of slide body 8, and the other end then is connected with the protruded arm of circuit box.
Because contacting of 81 of sleeve bearing groovings on compressing connect mechanism 500 and the slide body 8, one is cylinder and plane contact, one is spheroid and plane contact, both are rolling friction, the friction force of 8 of compressing connect mechanism 500 and slide body is reduced, the influence that measurement is caused when avoiding circuit box to be subjected to external force.
The foregoing description only is to give an example for convenience of description, and the interest field that the present invention advocated should be as the criterion so that claim is described certainly, but not only limits to the foregoing description.
Claims (13)
1, a kind of linear encoder is characterized in that, comprising:
One has the key light grid chi of a front reference surface and an end face reference surface;
One slide body has two sleeve bearing groovings and a plurality of rolling bearing, and this rolling bearing is affixed on this this front reference surface of key light grid chi or this end face reference surface, to move this slide body;
One indicates the grating chi, and the position cooperates this key light grid chi to produce an x-ray diffraction, with the Displacement Measurement distance between two sleeve bearing groovings of this slide body;
One circuit box has the protruded arm of two branch tool one grooves, and wherein this protruded arm is positioned at the bottom of this circuit box, so that this circuit box is fixed on this slide body; And
At least one compressing connect mechanism, it extends to the groove of this protruded arm of this circuit box by this sleeve bearing grooving of this slide body, makes this circuit box drive this slide body via this compressing connect mechanism and moves, and this slide body is affixed on this key light grid chi.
2, linear encoder as claimed in claim 1 is characterized in that, wherein this sign grating chi is identical with two sleeve bearings of this slide body grooving distance, makes this sleeve bearing grooving be symmetrical in this sign grating chi mutually.
3, linear encoder as claimed in claim 1 is characterized in that, wherein the sleeve bearing grooving of this slide body also comprises a cover plate outward, comes off to prevent this compressing connect mechanism.
4, linear encoder as claimed in claim 1 is characterized in that, wherein this compressing connect mechanism is two groups, and part is placed in two sleeve bearing groovings of this slide body respectively.
5, linear encoder as claimed in claim 1 is characterized in that, wherein this compressing connect mechanism has a ball-type pearl, and the position is in this sleeve bearing grooving; One column type sleeve is coated on this ball-type pearl periphery; And a spring steel wire, the one end links to each other with the protruded arm of this circuit box, and the other end and this column type sleeve join.
6, linear encoder as claimed in claim 1, it is characterized in that, its meta has an inclined-plane at the bottom portion of groove of this protruded arm of this circuit box, the most approaching position, this inclined-plane has the darkest degree of depth at this compressing connect mechanism position of this sleeve bearing grooving, makes this compressing connect mechanism have a compressing power vertical with the front reference surface of this key light grid chi.
7, linear encoder as claimed in claim 1 is characterized in that, wherein this groove of this circuit box is a tilting groove, and the normal direction that the vergence direction of this tilting groove is projected to the end face reference surface of this key light grid chi is towards this key light grid chi inside.
8, linear encoder as claimed in claim 5, it is characterized in that, wherein this compressing connect mechanism also comprises a compression spring, be positioned at this sleeve bearing grooving, and make this column type sleeve between this compression spring and this ball-type pearl, to oppress this column type sleeve, make this ball-type pearl in this column type sleeve withstand sleeve bearing grooving in this slide body.
9, linear encoder as claimed in claim 5 is characterized in that, wherein is somebody's turn to do the degree of depth of the external diameter of the column type sleeve of oppressing connect mechanism less than the sleeve bearing grooving of this slide body.
10, a kind of compressing connect mechanism cooperates a linear encoder, it is characterized in that, wherein this linear encoder comprises that one has the key light grid chi of a front reference surface and an end face reference surface; One slide body has at least one sleeve bearing grooving and a plurality of rolling bearing, and this rolling bearing is affixed on this front reference surface or this end face reference surface of this key light grid chi, to move this slide body; One indicates the grating chi, and the position cooperates this key light grid chi to produce an x-ray diffraction, with the Displacement Measurement distance on this slide body; And a circuit box, its bottom has at least one protruded arm with groove, so that this circuit box is fixed on this slide body; This compressing connect mechanism comprises:
One ball-type pearl, the position is in this sleeve bearing grooving;
One column type sleeve is coated on this ball-type pearl periphery; And
One spring steel wire, between this column type sleeve and this protruded arm, the one end links to each other with the groove of the protruded arm of this circuit box, and the other end and this column type sleeve join, and this circuit box and this slide body are joined;
Wherein the two sides of the sleeve bearing grooving of this slide body contacts with this compressing connect mechanism, one side is that the sleeve bearing grooving of this slide body contacts with this column type sleeve, one side is that the sleeve bearing grooving of this slide body contacts with this ball-type pearl, and the friction force between this compressing connect mechanism and this slide body is reduced.
11, compressing connect mechanism as claimed in claim 10, it is characterized in that, it also comprises a compression spring, be positioned at this sleeve bearing grooving, and make this column type sleeve between this compression spring and this ball-type pearl, to oppress this column type sleeve, make this ball-type pearl in this column type sleeve withstand sleeve bearing grooving in this slide body.
12, compressing connect mechanism as claimed in claim 10 is characterized in that, wherein the external diameter of this column type sleeve is less than the degree of depth of the sleeve bearing grooving of this slide body.
13, compressing connect mechanism as claimed in claim 10 is characterized in that, this sleeve bearing grooving of wherein ccontaining this ball-type pearl and this column type sleeve is a rectangular recess.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03154536 CN1275022C (en) | 2003-08-18 | 2003-08-18 | Linea encoder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03154536 CN1275022C (en) | 2003-08-18 | 2003-08-18 | Linea encoder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1584506A CN1584506A (en) | 2005-02-23 |
| CN1275022C true CN1275022C (en) | 2006-09-13 |
Family
ID=34597974
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03154536 Expired - Fee Related CN1275022C (en) | 2003-08-18 | 2003-08-18 | Linea encoder |
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| Country | Link |
|---|---|
| CN (1) | CN1275022C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007033574A1 (en) * | 2007-07-19 | 2009-01-22 | Dr. Johannes Heidenhain Gmbh | Length measuring device |
| CN103411541B (en) * | 2013-07-26 | 2015-12-02 | 广东工业大学 | A kind of coaster stationary installation of absolute grating ruler |
| JP6355349B2 (en) * | 2014-02-04 | 2018-07-11 | 株式会社ミツトヨ | Linear encoder |
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2003
- 2003-08-18 CN CN 03154536 patent/CN1275022C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1584506A (en) | 2005-02-23 |
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