CN1954155A

CN1954155A - Position measuring system

Info

Publication number: CN1954155A
Application number: CN 200580015859
Authority: CN
Inventors: A·哈格尔; K·费德勒; J·陶伯尔
Original assignee: Dr Johannes Heidenhain GmbH
Current assignee: Dr Johannes Heidenhain GmbH
Priority date: 2004-05-18
Filing date: 2005-04-06
Publication date: 2007-04-25
Anticipated expiration: 2025-04-06
Also published as: CN100460694C

Abstract

The invention relates to a position measuring device for determining the position of two structural units that are mobile in relation to each other. Said position measuring device comprises a first support for receiving a material measure of the position measuring device, which is adapted and intended for attachment to one of the structural units; a second support (F) for receiving a scanning unit of the position measuring device, which is adapted and intended for attachment to the other of the two structural units; and connecting means (S, M) for attachment of the two supports (F) including the respective structural unit associated therewith. At least one of the connecting means comprises a nut (M) with which a screw (S) can be engaged. Said nut (M) is disposed in a recess (100) of the two supports (F) and the recess (100) is elongated in such a manner that the nut (M), with one of its components, can be displaced perpendicular to the axial direction (-R) of the screw (S) associated therewith. According to the invention, the recess (100) is covered by a blocking element (8) which prevents a displacement of the nut (M) from the recess (100) in the axial direction (-R).

Description

Position-measurement device

It is described that invention relates to a kind of preorder by claim 1, is used to measure the position-measurement device of two module positions that can move mutually.

Such position-measurement device includes the non-indicative measurer that first bearing is used for the riding position measuring device, its design also is given on the assembly that is fixed in two assemblies that can move mutually, measuring device also includes the sweep unit that second bearing is used for the riding position measuring device, this bearing setting also is given on another assembly that is fixed in two groups that can move mutually, is used to make two bearings to be fixed on each self-corresponding assembly but also include connection set.Have at least a described connection set to include a bolt and a nut of attaching troops to a unit, wherein the latter is arranged in the vacancy corresponding to the bearing of connection set.

The longitudinal tensile strain ground of vacancy more advantageously designs like this, nut can be moved be used for the tolerance that compensates perpendicular to the axial direction of the bolt of correspondence in vacancy.

This position measuring system especially can be meant a kind of so-called length measuring system, and wherein non-indicative measurer has (being arranged on the scanning car) scanning sensor of a scanning scale by a linear staff and sweep unit.First bearing of position measuring system generally is meant a long shell in the case, linear staff is then vertical removable being placed in the shell of scanning car regularly, and second bearing refers to that one is connected with scanning car, that is to say with scanning car installation foot movably in the length direction of shell.By the one side shell, and on the other hand installation foot respectively with machine, especially two of a lathe mutually an assembly in the moving assembly be connected, just can detect two mutual relative fortune of assembly with length measuring system and advise, what be equivalent to this is that installation foot is swept head with respect to the relative movement of linear staff and critically definite its size with respect to the relative movement of shell mutually with scanning sensor.

In the time of in such position measuring system (especially length measuring system) lathe of packing into, just with two bearings (for example on one side for long shell, another side is an installation foot) but be fixed on to be everlasting often on the machine tool assembly (for example a lathe bed and a tool fitting) of relative movement mutually and only provide a little position to be used for carrying out installation exercise between each machine part.Thereby catch nut with a kind of instrument usually can not make a kind of nut-bolt and connect the time and prevent that it from sliding out in the vacancy of correspondence or drop out, be screwed in the internal thread of nut up to the bolt of attaching troops to a unit till.Even for catching nut also often not have enough positions with finger.

Thereby the task of invention provides a kind of position-measurement device that starts described pattern, simplifies to pack into one in this device and is equipped with in the machine of measuring device.

This problem solves by proposing a kind of position-measurement device with feature of claim 1 according to the present invention.

Provide a blocking element according to solution of the present invention with economic favourable means, the nut that it has prevented to pack in the vacancy of attaching troops to a unit drops out (with respect to the length direction of the bolt that is screwed into nut) in the axial direction.

Blocking element for example is a clip.So-called clip should be meant a kind of inserting member, it can be inserted on the vacancy or be inserted in the vacancy, nut just is placed in the vacancy, and sets up a kind of connection, make clip in other words inserting member be fixed on the vacancy and cover vacancy and be used to make nut shaft to fixing.That is to say that clip is meant a kind of (arbitrarily) inserting member, it can be arranged on the vacancy of laying nut, makes it cover nut on the one hand and is fixed on the vacancy on the other hand.

For the tolerance that compensates perpendicular to the axial direction of the bolt of attaching troops to a unit makes nut preferably reach by the following method moving in the vacancy: nut is arranged in the vacancy with certain axial clearance (it can be at random little).What is called has the layout of axial clearance to refer generally to the every kind layout of nut in vacancy, this vacancy allows nut to move perpendicular to axis because nut is arranged in basically loosely in the vacancy, although itself should not have tangible motion at (because minimum axial clearance) in the axial direction.It advantageously makes nut (not pass through axial force) not so in other words according to this and seamlessly is clamped in (between the bottom surface and clip of vacancy) in the vacancy, to such an extent as to can not move along the bearing of trend of vacancy.

Reach an axial clearance in the time of between the stop surface of bottom surface of nut being established the vacancy in the vacancy and blocking element as follows: the spacing between the stop surface of the bottom surface of vacancy and blocking element is more than or equal to along axial nut thickness, and nut can be bearing on above-mentioned bottom surface and the stop surface in the axial direction.

Having a clip to be arranged in substantially within the vacancy and especially also according to a kind of preferred implementing form of the present invention is being fixed on the vacancy within the vacancy.The fixing of clip advantageously carries out on around inwall of vacancy, this inwall protrude in vacancy the bottom surface and its leave bottom surface one side define to be covered by clip or want blind bore.The said inwall of vacancy needn't be fully around, and it also can have one or more interruptions in a circumferential direction.The inwall that meaningfully makes vacancy local envelopment is at least lived the outward edge of clip.

Clip is fixed on the realization of can advantageously as getting off on the inwall of vacancy: clip is pressed towards the inwall of vacancy with the outward edge (under the pretension effect) of sharp edge, thus prevent it in the axial direction slippage come out.In order to add sufficient pretension, clip is designed to elastically deformable at least one section.

Have at least two portion's sections that bend from the stop surface that is used for nut according to a kind of form of implementation clip of the present invention, they preferably be basically parallel to vacancy (around) respective segments of inwall and stretching, wherein each the portion's section that bends by clip has molded at least one connecting plate, and it acts on the inwall of vacancy with an arris.The sharp-pointed arris of connecting plate in the effect on the inwall of vacancy in contrast to a kind of direction that can make clip move out in the vacancy, thereby clip is fixed on the inwall in the axial direction.

According to another kind of form of implementation of the present invention, the matrix perpendicular to the clip of arranging around inwall of vacancy that constitutes stop surface that nut uses can flexibly be out of shape, to such an extent as to it preferably uses its (around) outer peripheral a plurality of edges abutting on the inwall of vacancy under the pretightening force effect with at least one arris.

Herein the matrix of clip can make on the one hand flexible so that arching takes place in inserting vacancy the time in it, then in that sharp-pointed arris is abutting on the inwall of vacancy under the pretension effect with at least one under the arching state.Alternatively can in the matrix of clip, be provided with and weaken the position, especially the form of through hole, extend in the plane at it when therefore matrix is in inserting vacancy, that is to say be basically perpendicular to vacancy around inwall, can be out of shape, and abut on the inwall of vacancy with at least one arris with the pretension of outside effect then.

According to another form of implementation clip of the present invention is that form fit connects ground, especially is fixed on the inwall of vacancy according to a kind of pattern of braking connection.For example can on clip, be provided with (forming) arrester hook, in the respective side in the arrester hook embedding vacancy inwall is recessed for this reason.Can on clip, be provided with one or more hitching posts on the other hand, in their engaging-in corresponding apertures in the vacancy inwall.

According to a kind of favourable improvement project of the present invention, clip has a slotted hole in it is used as the matrix of the stop surface that is used for nut, and the bolt of the nut of attaching troops to a unit can enter in this slotted hole with its free end of stretching in the nut.Therefore guaranteed: bolts and nuts together can direction perpendicular to axial direction move and are used for compensation and make and build-up tolerance.

For making bolt be more prone to be screwed in the nut of attaching troops to a unit, preferably be provided with a rotation inhibiting fixing device, it stops nut rotatablely moving in vacancy.This anti-rotation fixing device can be integrated in the vacancy itself on the one hand, especially make vacancy with its (for example polygon) interior profile (around inwall) be matched with the external frame of nut, thereby it does not just allow nut to rotatablely move in vacancy.

Alternatively also can be in clip an integrated corresponding anti-rotation fixing device, its method is that clip shape surrounds nut with being connected, for example by means of the supporting leg that is located on the clip.Clip is fixed on the vacancy on anti-rotation ground (form fit connects ground) again.

Other details of the present invention and advantage visible following according to accompanying drawing to explanation that embodiment did.Be depicted as:

Fig. 1: a kind of schematic cross-sectional view of position measuring system of length measuring system form;

Fig. 2 a: a partial perspective view of position measuring system shown in Figure 1, a vacancy is arranged, be used for position measuring system is fixed on nut on the machine part being equipped with one in the vacancy;

Fig. 2 b: the rear view of vacancy shown in Fig. 2 a;

Fig. 3 a: be used for three-dimensional view in first embodiment of the blocking element of a kind of clip-type of fixing nut by vacancy shown in Fig. 2 a;

Fig. 3 b: the top perspective view of the clip of pressing Fig. 3 a after in inserting the vacancy of pressing Fig. 2 a;

Fig. 3 c: the stereogram of the partly cut-away of Fig. 3 a shown device;

Fig. 4 a: one can be used for nut is axially fixed in second embodiment by the clip in the vacancy of Fig. 2 a;

Fig. 4 b: the clip shown in the curved state figure below 4a of arch;

Fig. 4 c: the three-dimensional view of clip shown in Fig. 4 a after in packing into by the vacancy of Fig. 2 a;

Fig. 4 d: the stereogram of the partly cut-away of Fig. 4 c shown device;

Fig. 5 a: can be used for nut is axially fixed in the 3rd embodiment by a clip in the vacancy of Fig. 2 a;

Fig. 5 b: stereogram by the clip of Fig. 5 a is housed by the vacancy of Fig. 2 a;

Fig. 5 c: the stereogram of the partly cut-away of Fig. 5 b shown device;

Fig. 6 a: can be used for nut is axially fixed in the 4th embodiment by a clip in the vacancy of Fig. 2 a;

Fig. 6 b: the stereogram of the partly cut-away when clip shown in Fig. 6 a is contained in the vacancy of Fig. 2 a;

Fig. 7 a: can be used for nut is axially fixed in the 5th embodiment by a clip in the vacancy of Fig. 7 a;

Fig. 7 b: the stereogram of the partly cut-away of the clip shown in Fig. 7 a after in inserting the vacancy press Fig. 2 a;

Fig. 8: an embodiment, wherein blocking element is an O type circle in the nut of packing into;

Fig. 9: an embodiment, wherein blocking element is an elasticity coating layer of nut;

Figure 10: an embodiment, wherein blocking element is an O type circle in the vacancy of packing into;

Figure 11: by A-A sectional view embodiment illustrated in fig. 10.

Fig. 1 has represented a kind of transverse section of position-measurement device of length measuring system form, and this length measuring system is used to measure the assembly B1 of two lathes that can move mutually along a longitudinal direction, B2, for example relative position of lathe bed and tool unit.

Length measuring system comprises a linear staff L, it is arranged in the cavity H who is stretched in the shell G on the scale L longitudinal direction E, and comprises that a sweep unit that is made of a scanning sensor K who is arranged on the scanning car W is used to scan the measurement scale of being located on the scale L.Measure in scale is movably disposed within shell G along its bearing of trend E with respect to linear staff L the cavity H and and be connected with an installation foot F.Installation foot F is that shell G is an another side on one side, and they are the connection set M by being fit to respectively, and S or V connect with the corresponding assembly B1 or the B2 of lathe.

This is located on the installation foot F and is used for its connection set that is connected with an assembly B1 of lathe and includes a bolt S, it passes a through hole on one side respectively and enters in the installation foot F, another side passes the through hole of the corresponding assembly B1 of lathe, and including a nut M, bolt S enters in the internal thread of nut with its outside thread A engagement and nut is arranged on 100 li of the vacancies of installation foot F.

Amplify in Fig. 2 a and 2b and represented that this 100, one of vacancy that are used to place the installation foot F of nut M be a front isometric view, another be a stereo rearview, that is to say shown in Fig. 2 a and nut M inside being contained in and the bolt S that attaches troops to a unit.

Can see, the cross-sectional design of the interior profile 111 of vacancy 100 is polygonal, just hexagonal and form one around inwall 116, its imports 115 li of the bottom surfaces of vacancy 100.In its side vacancy 100 that deviates from bottom surface 115 are perforates, and nut M can pass pack into 100 li of vacancies of this perforate.

It equally also is polygonal (hexagonal) nut external frame that the interior profile 111 of the polygonal of vacancy 100 is matched with, nut can only be rotated with limitation 100 li of vacancies, so nut M when being screwed into nut M internal thread, the bolt S that will attach troops to a unit can remain on to rotation inhibiting 100 li of the vacancies of installation foot F substantially.

Vacancy 100 is at measuring device, that is to say on the bearing of trend E of especially linear staff L and shell G (referring to Fig. 1) to have the elongation bigger or more identical than nut M, so nut M can also move along direction E when mounted for tolerance balancing.Because vacancy 100 has a slotted hole 115a who stretches along that direction E in by the bottom surface 115 shown in Fig. 2 b at it, it is passed by the bolt S shown in Fig. 2 a, so bolt S can move along the direction of extension E (see figure 1) of position measuring system with nut M for tolerance balancing.

Although nut M has prevented the rotation 100 li of vacancies, this is screwed in the internal thread of nut M bolt S and is more prone to, but also have following problem: fixing preventing from 100 li of vacancies by coming out with bottom surface 115 opposed perforate slippages if it does not add, nut M (with respect to longitudinal direction of the thread section of the bolt S that is provided with outside thread A) on axial direction R may drop out for 100 li from vacancy.

Fig. 3 a has represented first embodiment of a blocking element of clip 1 form of 100 li of a kind of vacancies that can be inserted in installation foot F, just can prevent to come out with this clip 1 nut M by 100 li axial slips of vacancy of installation foot F, nut M direction perpendicular to axial direction wherein that is to say along the movable property of the direction of extension E of position measuring system side by side not to be affected.

The clip 1 that can be preferably designed to a kind of stamping part of being made by latch plate has a matrix 10, matrix has the external frame 11 of an interior profile 111 that is matched with vacancy 100 and is provided with a slotted hole 15, this slotted hole along the direction of extension E layout of position measuring system, is seen Fig. 3 b and 3c after clip 1 being inserted 100 li of vacancies.

Portion's section 16 of four resilient legs shapes is from matrix 10 bending of clip 1, portion's section under clip 1 insertion state basically opposed the section separately along vacancy 100 inwalls 116 arrange.On each supporting leg 16, be provided with a connecting plate 17 by cutting, this plate the pretension effect under from supporting leg 16 separately roughly outwards (under the state of packing on the direction of vacancy 100 inwalls 116, see Fig. 3 c) outstanding, and the end on the corresponding portion section that abuts in inwall 116 separately in the above is designed to sharp edge shape (a sharp edge shape portion section 18 is arranged).

When clip 1 when the direction of insertion R shown in Fig. 3 c inserts 100 li of vacancies to the connecting plate of the bending supporting leg 16 of outer process just along the corresponding separately portion section slip of the inwall 116 of vacancy 100, wherein give inwards to supporting leg 16 and connecting plate 17 springing.Therefore clip 1 can just be encased in the vacancy with little power and (be pressed into/clamp-on).

Clip 1 is arranged in after 100 li of the vacancies, and as shown in Fig. 3 b and the 3c, the sharp edge portion section 18 of connecting plate 17 is on corresponding opposed the section that is pressed towards vacancy 100 inwalls 116 under the pretension effect; And they nip and go in the section of portion separately of inwall 116, if clip 1 is coupled with axial force words that are in reverse to direction of engagement R, for example because nut M is pressed to the matrix 10 of clip 1 when assembling.This effect of 18 pairs of vacancies of sharp edge portion section, 100 inwalls 116 by connecting plate 17 makes clip 1 be fixed on 100 li of vacancies in the axial direction reliably.This means simultaneously: even nut M can not come out from 100 li slippages of vacancy in the axial direction, because the matrix 10 of clip 1 plays the effect of axial stop face, stop surface has limited nut M motion in the axial direction and this makes it to remain on 100 li of vacancies.

By Fig. 3 c as seen, the thickness d of nut M less than the matrix 10 as the clip 1 of stop surface leave vacancy 100 bottom surfaces 115 apart from a.Therefore nut M (at least before bolt S tightens) axial clearance is arranged is arranged at 100 li of vacancies, so it can be used for tolerance compensation mode along the bearing of trend E (extending axially perpendicular to bolt S just) of position measuring system and moves.A kind of such moving movement can be realized by bolt S without difficulty, because bolt passes a slotted hole 115a who extends 115 li of vacancy 100 bottom surfaces, this slotted hole stretches along that direction of extension E to be arranged.

This has the following advantages according to the clip 1 shown in Fig. 3 a to 3c: it can be used as 100 li of the vacancies of passing through that self-sustaining inserting member is inserted in installation foot F, and the wall portion that needn't ad hoc design the vacancy 100 that is made of bottom surface 115 and inwall 116 fixes clip 1.Clip 1 just reaches by the structure that makes clip 1 have corresponding sharp edge portion section 118 at the fixing of 100 li of vacancies, and these sharp edge portion sections can be nipped vacancy 100 around 116 li of inwalls.Since the supporting leg 116 of bending and the structure of the spring of connecting plate 117 therefore so also can the big one side clip 1 of compensate for slower the tolerance of outside dimension, the tolerance of the inside dimension of vacancy 100 on the other hand.This outer nut M is used for the mobility of tolerance balancing and compares in fact also unaffected with the device that does not have clip.

Fig. 4 a represents a kind of second embodiment of the clip 2 that preferably is made of latch plate, and it is made of a matrix 20 that has the external frame 21 of polygonal (Hexagon), and matrix has a slotted hole 25 on the one hand, along external frame 21 sharp edge portion section 28 is arranged on the other hand.Because its flexible structure, clip 2 can the arching by bending without difficulty when the corresponding bending force of effect, sees Fig. 4 b.

The structural design of clip 2 should make it along a direction, preferentially has the bigger stretching, extension of ratio gap 100 along the bearing of trend E of position measuring system, sees Fig. 4 c and 4d.Therefore insert (being pressed into) power of edge side when 100 li of the vacancies of installation foot F are gone at clip 2 and just act on the external frame 21 of matrix 20, these mechanical resistances hinder clip 2 to be inserted in the vacancy to go.Owing to be pressed into/on direction of engagement R, acting on simultaneously when inserting the power of clip 2, matrix 20 archings of clip by bending, as shown in Fig. 4 c and the 4d, wherein the effective length of the matrix 20 of clip 2 slightly reduces along bearing of trend E, thereby clip 2 can continue to be pressed into 1 li of vacancy.Consequently 1 in clip abuts on the inwall 116 of vacancy 100 in the sharp edge portion section 28 with its external frame 21 under the arching state, thereby it is lived at 100 li axial restraints of vacancy.

As in the above-described embodiments, here between the bottom surface 115 of the matrix 20 of clip 2 and vacancy 100 apart from a also greater than the thickness of nut M, therefore nut M is arranged between the matrix 20 of the bottom surface 115 of vacancy 100 and clip 2, so that permission realizes tolerance compensating along a direction E perpendicular to axis with sufficient axial clearance.

Compare its feature by the described clip 2 of Fig. 4 a to 4b with clip shown in Fig. 3 a to 3c and be that especially structure is simpler.It must that is to say external frame 21 in shape certainly aspect its boundary dimension, be matched with the interior profile 111 of vacancy 100 more accurately, has not all had because cause the measure than high tolerance of the above-mentioned size of compensation along with the springing supporting leg of using bending.

The another kind of clip of forming by latch plate 3 of expression in Fig. 5 a to 5c, it as this at the clip 2 shown in Fig. 4 a to 4d, basically be arranged in the plane with a matrix 30 and have the elongation more bigger than the vacancy 100 of installation foot F along the bearing of trend E of direction, especially a position measuring system.

Clip 3 weakens position 32 what 30 li of its matrixes also had four long through-hole forms except the slotted hole 35 that will be passed by bolt 3, and they are arranged along the sharp edge portion section 38 of the external frame 31 of matrix 30 respectively.This can make matrix 30 realize distortion in its extension plane when being pressed into 100 li of vacancies, and wherein sharp edge portion section 38 slightly is pressed into inwards and weakens 32 li at position, thereby makes clip 3 can be pressed into 100 li of vacancies when the resiliently deformable of its matrix 30.The inwall 116 of vacancy 100 is outwards pressed at its sharp edge position 38 after clip 3 inserts 100 li of vacancies, thereby makes clip 3 be fixed on 100 li of vacancies.

In addition, according to the embodiment shown in Fig. 5 a to 5c, especially with regard to the function of clip 3, corresponding to according to shown in Fig. 3 a to 3c and the 4a to 4d therefore can be referring to relevant with it narration for other details.

Corresponding to shown in Fig. 4 a to 4d,, it should be noted that wherein the external frame 31 of clip 1 is matched with the interior profile 111 of vacancy 100 with regard to clip shown in advantage Fig. 5 a to 5c of its feature because equally also be meant the flat plate that simply to make economically.

An embodiment who has represented a clip 4 in Fig. 6 a and 6b, it has a matrix with a slotted hole 45 40 that is surrounded by polygonal (Hexagon) profile 41, is extruded with four arrester hooks 46 (vertical substantially) that are provided with detent projection 49 from matrix.Cooperate arrester hook 46 detent projection 49 be recessed 119 in the respective side around 116 li of inwalls of vacancy 100 at installation foot, so clip 4 can connect by braking and be fixed in the wall portion 115,116 of vacancy 100, especially within it on the wall 116.Folder 34 can be by arrester hook 46 the design of spring introduce 100 li of vacancies, arrester hook 46 can clip 4 pack into 100 li of vacancies when going fall home leave, the side that snaps in inwall 116 with its retaining segment 49 is recessed 119 li then.

Clip shown in Fig. 6 a and the 6b also can advantageously be designed to working of plastics, is not connected because external frame 41 does not need sharp edge portion section to set up with the braking of vacancy 100 inwalls 116, and this connection realizes by the detent projection 49 fast moving sides recessed 119 that enter correspondence.Therefore clip 4 can save money by pressure injection manufacturing (making pressed article), wherein because the structure of the spring of the arrester hook 46 big tolerance of compensate for slower side by side, the boundary dimension tolerance that refers to clip 4 on the one hand refers to the tolerance of the inside dimension of vacancy 100 on the other hand.

Using a kind of clip 4 that is provided with arrester hook 46 requires certainly: be processed with corresponding recessed 119 forms of brake hole, especially side 100 li of the vacancies of installation foot.This especially realizes when installation foot is made by milling easily, wherein can easily process corresponding brake hole.

Arrester hook 46 desired positions may cause certain dwindling of tolerance compensating scope, this compensation can realize by moving of nut M along the bearing of trend E of position measuring system, and then tolerance compensating is not influenced in the

flat clip

2,3 shown in Fig. 4 a to 4d and the 5a to 5c.

The latter also is suitable for the clip 5 shown in Fig. 7 a and the 7b, and this clip can be a kind of economical pressed article that is made of plastics.This pressed article includes the matrix with a slotted hole 55 50 on a plane of being limit by the external frame 51 of polygonal (Hexagon), vertically is extruded with two hitching posts 53 that are provided with rib 54 from matrix.What cooperate this hitching post 53 is the corresponding aperture 113 of the boring shape around vacancy 100, and hitching post 53 can insert in these holes, and wherein rib 54 is pressed to the outer wall in hole 113 and therefore entered the 113 li secure fixation that guarantee clip 5 in hole of being joined by hitching post 53 engagements.

With according to shown in Fig. 6 a and the 6b, the clip 4 that equally also can be made into pressed article is compared, and the characteristics that a socket connection can be fixed on the clip on the vacancy 100 of passing through shown in this Fig. 7 a and the 7b at first are: the size of tolerance compensating is not subjected to nut M in 100 li influences of moving along a bearing of trend E of position measuring system of vacancy.Certainly the processing that need add material around vacancy 100 here, its method are to process suitable hole 113 at there to be used to accept hitching post 53.

In addition, this is according to Fig. 6 a and 6b and Fig. 7 a and the described clip 4,5 of 7b, especially about its function aspects, and according to Fig. 3 a to 3c, and the described

clip

1,2,3rd of 4a to 4d and 5a to 5c, consistent, therefore can be referring to relevant therewith explanation for other details.

Fig. 8 and 9 has represented two embodiments, and wherein nut M has prevented from axially to drop out for 100 li from vacancy by 100 li of the vacancies that are clamped in by periphery.Form if blocking

element

6,7 is arranged between the inwall 116 of nut M and vacancy 100 and by the flexible materials such as plastics of giving, that is with regard to advantageous particularly.

Be provided with a groove 121 in Fig. 8 in nut M on periphery, the O type circle 6 of packing in this groove is as blocking element.According to Fig. 9 blocking element is an elasticity that is applied on the nut M periphery coating 7 of giving.This coating for example can generate by sulfuration.

The advantage of the resilient middle layer 6 between the inwall 116 of nut M and vacancy 100 is: the manufacturing tolerances of nut M and vacancy 100 has obtained compensation, and however nut M radially is clamped in 100 li of vacancies reliably.In addition pack into easily 100 li of vacancies and therefrom taking out again of nut M have been guaranteed.Another advantage is: in 100 li positions that can be matched with bolt S of vacancy, its method is that nut M can be perpendicular to the axial direction motion of the bolt S that attaches troops to a unit to nut M when being screwed into bolt S.Possible movement travel is depended on the thickness of coating 7 or O type circle 6 and elasticity and is selected corresponding to requiring.

Elastic coating 7 also can alternatively be arranged on the inwall 116 of vacancy 100.Same O type circle also can alternatively be contained in the groove of inwall 116 of vacancy 100.

Figure 10 and 11 has represented a particularly advantageous embodiment.115 1 of bottom surfaces leaving vacancy 100 are provided with a blocking element apart from a, and the blocking element form is at least at (perpendicular to the direction of R) extendible element 8 in the radial direction.This element is an O type circle 8 of giving in the elasticity of 121 li of grooves of vacancy 100 in the example shown.Between the bottom surface 115 of vacancy 100 and O type circle 8 apart from a in the axial direction greater than or equal the thickness of nut M at least.Its advantage in: nut M can be under the state of 100 li of vacancies of packing on direction E the vacancy at longitudinal direction move for 100 li.

O type circle therefore around limit lived vacancy 100 near the hole, so it when pressed-in nut M on nut resistance that can overcome of effect.The power that is pressed into of nut M O type circle 8 is radially opened and make vacancy 100 near the hole nut M is opened release.If nut M has been pressed into 100 li of vacancies fully, O type circle 8 release and nut is discharged on every side again nut M after so.Release by O type circle 8 makes near opening closes and forms the locking that a nut M moves on axial direction R.

The advantage of the example shown in Fig. 8 to 11 is: blocking

element

6,7,8 configured and disposed it just can be installed on the vacancy 100 or on the nut M when nut M packs vacancy 100 into.Therefore the manufacturer of position-measurement device can provide a kind of device that has installed, and does not need the user that additional operation is arranged when mounted.

Claims

1. be used to measure two mutually the motion assembly (B1, the B2) position-measurement device of position has:

-the first bearing (G) is used for the non-indicative measurer (L) of riding position measuring device, the first bearing setting and being given on (B2) that is fixed in two assemblies,

-the second bearing (F) is used for the sweep unit (K) of mounting point measuring device, the second bearing setting and be given on another assembly (B1) that is fixed in two assemblies and

-be used to make two bearings (G, F) with each self-corresponding assembly (B1, B2) be fixedly coupled device (S, M), wherein

-at least one connection set includes nut (M), and nut can mesh with bolt (S),

-nut (M) can be encased in two bearings (G, F) vacancy (100) lining of the bearing in,

It is characterized in that blocking element (1,2,3,4,5,6,7,8); It and nut (M) acting in conjunction under the state of packing into are so that stop nut (M) (R) go up and move out from vacancy (100) lining, thereby bolt can be encased in nut (M) lining at axial direction.

2. by the described position-measurement device of claim 1, it is characterized in that blocking element is clip (1,2,3,4,5), it covers vacancy (100); And nut (M) is arranged between the stop surface (10,20,30,40,50) of the bottom surface (115) of vacancy (100) and clip (1,2,3,4,5) in vacancy (100) lining.

3. by the described position-measurement device of claim 2, it is characterized in that bottom surface (115) and clip (1,2 in vacancy (100), 3,4,5) stop surface (10,20,30,40,50) distance between (a) is in the axial direction greater than the thickness (d) of nut (M).

4. by aforesaid right requirement 2 or 3 described position-measurement devices, it is characterized in that vacancy (100) lining is arranged and be fixed on to clip (1,2,3,4,5).

5. by the described position-measurement device of claim 4, it is characterized in that clip (1,2,3,4,5) is fixed on the wall (115,116) of vacancy (100), especially at one at least on the inwall of local linking (116).

6. by the described position-measurement device of claim 5, it is characterized in that clip (1,2,3) is pressed to the inwall (116) of vacancy (100) with at least one arris (18,28,38), thereby it is fixed on vacancy (100) lining.

7. by the described position-measurement device of claim 6, it is characterized in that clip (1,2,3) can resiliently deformable at least one subrange, thereby makes it press to the inwall (116) of vacancy (100) with corresponding arris (18,28,38) under the pretension effect.

8. by claim 6 or 7 described position-measurement devices, it is characterized in that, clip (1) has portion's section (16) of two bendings at least, they are arranged along the inwall (116) of vacancy (100), and on portion's section (16) of bending separately, being provided with a connecting plate (17) at least, connecting plate acts on the inwall (116) of vacancy (100) with arris (18).

9. by the described position-measurement device of claim 6, it is characterized in that clip (2,3) have and substantially be the matrix on plane (20,30), it can resiliently deformable, thereby it is abutting under the pretension effect on the inwall (116) of vacancy (100) with at least one outer edge (28,38).

10. by the described position-measurement device of claim 4, it is characterized in that clip (4,5) can be fixed on to form fit on the vacancy (100).

11., it is characterized in that clip (4,5) connects (49,119) by braking and/or can be fixed on the vacancy (100) by socket connection (53,113) by the described position-measurement device of claim 10.

12. by the described position-measurement device of claim 11, it is characterized in that, the braking connection includes at least one arrester hook (46), it uses retaining segment (49) advancing side recessed (119) lining, to clip (4), be provided with an arrester hook (46) at least altogether, open on the inwall (116) of vacancy (100) and be provided with brake hole (119).

13. by the described position-measurement device of claim 10, it is characterized in that for clip (5) is fixed on the vacancy (100), at least one hitching post (53) inserts corresponding lining, hole (113), wherein hitching post (53) is located on the clip (5), hole (113) be located at vacancy (100) around.

14. by described position-measurement device one of in the aforesaid right requirement 2 to 13, it is characterized in that clip (1,2,3,4,5) has slotted hole (15,25,35,45,53) on matrix (10,20,30,40,50), bolt (S) can stretch in this hole.

15., it is characterized in that the structural design of clip (1,2,3,4,5) makes it play the effect that overcomes the anti-rotation fixing device that nut (M) rotates in vacancy (100) lining by described position-measurement device one of in the aforesaid right requirement 2 to 14.

16., it is characterized in that clip (1,2,3,4,5) has and is used for form fit and encloses the structure of blocking nut (M) with connecting by the described position-measurement device of claim 15.

17. by the described position-measurement device of claim 1, it is characterized in that, nut (M) can be clamped in vacancy (100) lining by means of blocking element (6,7).

18. by the described position-measurement device of claim 1, it is characterized in that, blocking element (6,7,8) structural design and layout have just worked it when nut (M) is packed vacancy (100) into, its method is: blocking element (6,7,8) just has been arranged on the vacancy (100) or on nut (M) when nut (M) is packed vacancy (100) lining into.

19. by claim 17 or 18 described position-measurement devices, it is characterized in that blocking element is the member (6,7) that elasticity can be given, it is arranged between the outer periphery of the inwall (116) of vacancy (100) and nut (M), and nut (M) can be clamped in the vacancy by it.

20., it is characterized in that the member that elasticity can be given is an O-shape circle by the described position-measurement device of claim 19.

21., it is characterized in that O shape circle (6) remains on groove (120) lining of vacancy (100) lining or in groove (121) lining of nut (M) by the described position-measurement device of claim 20.

22., it is characterized in that the elasticity member of can giving is the elasticity coating layer (7) of nut (M) or vacancy (100) by the described position-measurement device of claim 19.

23. by the described position-measurement device of claim 1, it is characterized in that, blocking element is the element (8) that elasticity can be given, it restriction on the periphery pack into nut (M) usefulness vacancy (100) go up the surmountable resistance of effect near opening and when the nut of packing into (M) at nut (M), but after nut was packed vacancy (100) into, nut (M) discharged at periphery.

24., it is characterized in that the elasticity element of giving is an O shape circle (8) by the described position-measurement device of claim 23.

25., it is characterized in that O shape circle (8) remains on groove (121) lining of vacancy (100) lining by the described position-measurement device of claim 24.

26., it is characterized in that (R) is at the bottom surface (115) of vacancy (100) and the distance (a) between the blocking element (8) thickness (d) more than or equal to nut (M) in the axial direction by described position-measurement device one of in the claim 23 to 25.

27., it is characterized in that the geometrical shape of vacancy (100) has formed the anti-rotation fixing device by the described position-measurement device of one of aforesaid right requirement, it stops nut (M) to rotate in vacancy (100) lining.

28., it is characterized in that it is designed to have the length-measuring appliance of the non-indicative measurer of straight line (L) by the described position-measurement device of one of aforesaid right requirement.

29. by the described position-measurement device of claim 28, it is characterized in that first bearing is made of the shell (G) of the non-indicative measurer of straight line (L), and second bearing is made of installation foot (F), (K, W) installation foot links to each other the sweep unit that non-indicative measurer (L) is scanned therewith.

30., it is characterized in that vacancy will make nut (M) wherein removable with the component perpendicular to the axial direction of the bolt of attaching troops to a unit in the design of longitudinal extension ground by the described position-measurement device of one of aforesaid right requirement.