CN208887548U - Supporting structure and roundness measuring device - Google Patents

Abstract

The utility model relates to roundness measurement technical fields, more particularly, to a kind of supporting structure and roundness measuring device；Above-mentioned supporting structure includes supporting member and at least two first rotating members that are rotatably arranged on supporting member；The first rotating member on supporting member is directly contacted with the circumferential surface of workpiece for measurement, and the first rotating member can be rotated with workpiece for measurement.A kind of roundness measuring device, including supporting structure further include measurement table；Above-mentioned supporting structure is when support positions workpiece for measurement, it is ensured that the rotation of workpiece for measurement is more stable, just smaller compared to traditional technology circular runout, it is ensured that roundness measuring device has higher measurement accuracy.When workpiece for measurement rotates one week, measurement table maxima and minima is read, difference is exactly the circularities of the workpiece for measurement, and easy to operate in this way, and efficiency is higher, and cost is relatively low.

Description

Supporting structure and roundness measuring device

Technical field

The utility model relates to Roundness Measuring Technique fields, more particularly, to a kind of supporting structure and roundness measuring device.

Background technique

Circularity is to indicate that the element true form of circle and its center keep equidistant situation, i.e., usually said circle on part Whole degree.

In existing roundness measurement tool, requires supporting device and support is formed to workpiece for measurement (i.e. shaft-like workpiece), To facilitate shaft-like workpiece to complete roundness measurement on supporting device；But traditional supporting device is mostly groove-like supporting device (such as: v-depression), stronger rubbing action will be formed to the rotation of shaft-like workpiece by directly supporting position, so as to cause The rotation of shaft-like workpiece is not stable enough, and radial beat eccentricity is big when shaft-like workpiece rotates when in turn resulting in measurement, so that circularity be made to survey Measure the measurement accuracy decline of device.

Utility model content

The purpose of this utility model is to provide a kind of supporting structure and roundness measuring devices, to solve existing measurement dress It sets the workpiece in measurement and rotates jiggly technical problem.

The utility model provides a kind of supporting structure, including supporting member and be rotatably assorted on the bearer at least two First rotating member；The circumferential surface of at least two first rotating members and the circumferential surface of workpiece for measurement are tangent to be contacted and is collectively formed To the clamping position of workpiece for measurement, and the first rotating member can be rotated with workpiece for measurement.

Further, supporting member is equipped with the limiting groove for accommodating the first rotating member, the part protrusion of the first rotating member On the groove edge of limiting groove, another part of the first rotating member is hidden under the groove edge of limiting groove.

Further, at least two first rotating members are symmetrical arranged relative to the middle line of limiting groove.

Further, limiting groove is arc-shaped or V-arrangement.

Further, supporting member is equipped with the first mounting groove, and at least two first rotating members are located in the first mounting groove.

Further, supporting structure further includes pressing plate, and pressing plate is flexibly connected with supporting member, pressing plate and at least two first turns Moving part is matched to clamp workpiece for measurement.

Further, one end of pressing plate and supporting member are hinged.

Further, at least one second rotating member is installed, at least one second rotating member and at least two on pressing plate First rotating member rotationally clamps workpiece for measurement jointly.

Further, the first rotating member and/or the second rotating member are idler wheel.

Correspondingly, the utility model additionally provides a kind of roundness measuring device, including at least one supporting structure and is suitable for The measurement table and bottom plate that the workpiece for measurement being located on supporting structure is measured；Supporting structure and measurement table are arranged at On bottom plate.

Further, at least one support structure location is adjustably arranged on bottom plate.

Further, roundness measuring device further includes gauge stand, and measurement table is installed on gauge stand, and gauge stand position is adjustably arranged On bottom plate.

Further, roundness measuring device further includes end locating part, and end locating part is used for the axial direction to workpiece for measurement It is limited.

Further, measurement table and end locating part are located at the side of same supporting structure.

On the one hand, the utility model relates to a kind of supporting structure (i.e. a kind of for measuring the supporting structure of circularity), packets The first rotating member for including supporting member and being rotatably arranged on supporting member；First rotating member at least two；First on supporting member Rotating member is directly contacted with the circumferential surface of workpiece for measurement, and the first rotating member can be rotated with workpiece for measurement.

The supporting structure, has the advantage that

(1), when measuring, driving workpiece for measurement is rotated one week, while the first rotating member can be with workpiece for measurement common rotation；? During this, the way of contact between the first rotating member and workpiece for measurement is to be in rolling contact, and hinders the friction of workpiece for measurement rotation Resistance is smaller, so, the workpiece for measurement can on supporting structure smooth rotation；Using above-mentioned supporting structure can guarantee to The rotation for surveying workpiece is more stable, just smaller compared to traditional technology circular runout, it is ensured that roundness measuring device has higher survey Accuracy of measurement.

(2), traditional supporting mechanism is mostly groove support, and the rotation of shaft-like workpiece will be formed by directly supporting position The rotational freedom decline of shaft-like workpiece is led in stronger constraint effect.And support construction provided by the present application, the first rotating member is only Be able to rotate it is immovable, therefore can to workpiece for measurement implement radial positioning effect, moreover it is possible to rotated with workpiece for measurement, in other words, It can also make workpiece for measurement flexible rotating, easy to operate (i.e. guarantee workpiece for measurement rotation while guaranteeing radial positioning effect Freedom degree, even manually rotation workpiece for measurement it is also very convenient).

(3), traditional supporting mechanism is mostly groove support, will be will cause when fixation surface positions piece-holder to be measured Biggish fretting wear；However supporting structure provided by the utility model, the surface abrasion of workpiece for measurement will be reduced and (rolled Dynamic friction is smaller with respect to conventional slip fretting wear), so that measurement operation be preferably minimized the wear of work to be measured influence.

On the other hand, the utility model has further related to a kind of roundness measuring device；Including at least one supporting structure and fit In the measurement table measured to the workpiece for measurement being located on supporting structure.In the specific use process, first by workpiece for measurement It is placed on supporting structure, the measurement end for measuring table is connected to the top of the circumferential surface of workpiece for measurement, then rotate work to be measured Part, since the wheel face of the first rotating member is in contact with the circumferential surface of workpiece for measurement, the first rotating member also can workpiece for measurement therewith Smooth rotation together；When workpiece for measurement rotates one week, measurement table maxima and minima is read, difference is exactly the work to be measured The circularities of part.

The roundness measuring device, has the advantage that

(1), the workpiece for measurement can on the supporting structure of roundness measuring device smooth rotation；Using with supporting structure Roundness measuring device can guarantee that the rotation of workpiece for measurement is more stable, and circular runout is smaller, and measurement accuracy is higher.

(2), the roundness measuring device when specific operation, is being also easier to rotation workpiece for measurement, just ensure that workpiece for measurement The freedom degree of rotation.

(3), the roundness measuring device support position workpiece for measurement when, to will to workpiece for measurement circumferential surface wear more It is small.

Detailed description of the invention

It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art Under the premise of labour, it is also possible to obtain other drawings based on these drawings.

Fig. 1 is a kind of schematic perspective view of the embodiment for the supporting structure that the utility model embodiment one provides；

Fig. 2 is the schematic view of the front view for the supporting structure that Fig. 1 the utility model embodiment one provides；

Fig. 3 is the structural schematic diagram of the another embodiment for the supporting structure that the utility model embodiment one provides；

Fig. 4 is the structural schematic diagram of workpiece for measurement；

Fig. 5 is the structural schematic diagram for the supporting structure that the utility model embodiment two provides；

Fig. 6 is the schematic diagram that the roundness measuring device that the utility model embodiment three provides is in a state；

Fig. 7 is the schematic diagram that the roundness measuring device that the utility model embodiment three provides is in another state.

Appended drawing reference: supporting structure 100；Supporting member 101；First rotating member 102；Limiting groove 103；Pressing plate 104；Second Rotating member 105；Pin shaft 106；Handle portion 107；Mounting groove 108；Installation axle 109；Measure table 200；Measuring staff 201；Bottom plate 300；End Portion's locating part 400；Gauge stand 500；Vertical portion 501；Horizontal part 502；Workpiece for measurement A.

Specific embodiment

The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described Embodiment is the utility model a part of the embodiment, instead of all the embodiments.It should be noted simultaneously that following more In a embodiment, identical appended drawing reference used in different attached drawings corresponding to each embodiment indicates same component part, But the specific structure of the component part may be there are many different forms.

Embodiment one

As shown in Figure 1, the utility model provides a kind of supporting structure 100, including supporting member 101 and it is rotatably arranged on branch Two the first rotating members 102 in bearing member 101 (first rotating member can be mounted in the bearing on supporting member)；Supporting member The circumferential surface of two the first rotating members 102 on 101 is directly formed the circumferential surface of workpiece for measurement A (referring specifically to Fig. 4) The tangent contact of periphery, and the clamp standoff movement to workpiece for measurement A is collectively formed, while above-mentioned first rotating member 102 can It is rotated together with workpiece for measurement A；Above-mentioned supporting structure contains support and carries the meaning of two aspects of the workpiece for measurement.It needs Illustrate, the supporting structure 100 that the utility model embodiment one provides relates to be mounted on about two the first rotating members 102 Structure type on supporting member 101.But in other embodiments, above-mentioned first rotating member 102 can be two, three or Other quantity, no longer repeats this one by one.

Supporting structure provided by the utility model, has the advantage that

(1), when measuring, driving workpiece for measurement is rotated one week, while the first rotating member can be with workpiece for measurement common rotation；? During this, the way of contact between the first rotating member and workpiece for measurement is to be in rolling contact, and hinders the friction of workpiece for measurement rotation Resistance is smaller, so, the workpiece for measurement can on supporting structure smooth rotation；Using above-mentioned supporting structure can guarantee to The rotation for surveying workpiece is more stable, just smaller compared to traditional technology circular runout, it is ensured that roundness measuring device has higher survey Accuracy of measurement.

(2), traditional supporting mechanism is mostly groove support, and the rotation of shaft-like workpiece will be formed by directly supporting position The rotational freedom decline of shaft-like workpiece is led in stronger constraint effect.And support construction provided by the present application, the first rotating member is only Be able to rotate it is immovable, therefore can to workpiece for measurement implement radial positioning effect, moreover it is possible to rotated with workpiece for measurement, in other words, It can also make workpiece for measurement flexible rotating, easy to operate (i.e. guarantee workpiece for measurement rotation while guaranteeing radial positioning effect Freedom degree, even manually rotation workpiece for measurement it is also very convenient).

(3), traditional supporting mechanism is mostly groove support, will be will cause when fixation surface positions piece-holder to be measured Biggish fretting wear；However supporting structure provided by the utility model, the surface abrasion of workpiece for measurement will be reduced and (rolled Dynamic friction is smaller with respect to conventional slip fretting wear), so that measurement operation be preferably minimized the wear of work to be measured influence.

In the optional scheme of the present embodiment one, the quantity of first rotating member 102 is at least two, that is, include two or It is more than two situations；Two or more than two first rotating member 102 can be to the peripheries preferably to workpiece for measurement A Multiple positions realize support, to enhance its supporting role, form more solid and reliable support limit effect.

In the optional scheme of the present embodiment one, the top surface of supporting member 101 offers a limiting groove 103；First rotation Part 102 is arranged along at the groove edge of limiting groove 103.It should be noted that the first rotating member 102 in above-mentioned limiting groove Main function be to workpiece for measurement implement support upwards limit movement；The effect of the limiting groove 103 simultaneously is to accommodate to be somebody's turn to do Workpiece for measurement A and the first rotating member, workpiece for measurement A are not contacted directly with limiting groove 103, are directly contacted with workpiece for measurement A Be the first rotating member 102.And first the part of rotating member 102 protrude from the groove edge of limiting groove 103, the first rotation Another part of part 102 is hidden under the groove edge of limiting groove 103.

In the optional scheme of the present embodiment one, limiting groove 103 can arc-shaped or V-arrangement shape.As shown in Figure 1, excellent Selection of land, limiting groove can be arc-shaped, can be adapted with the outer profile of workpiece for measurement, avoid workpiece for measurement and branch in rotation Unnecessary friction is generated between support member；In addition, the limiting groove inner space of arc is very big, can accommodate well a variety of straight The workpiece for measurement of diameter size.

It is highly preferred that limiting groove 103 is arc-shaped.Above-mentioned arc-shaped limiting groove 103 can be more convenient to process.

Even more preferably, the edges at two ends of the limiting groove 103 of above-mentioned circle-arc profile can also be processed into fillet, When installing the first rotating member, the first rotating member can be easy to project, in this way when rotating workpiece for measurement, workpiece for measurement It will not tap and touch with the fillet part, avoid having an impact rotation.

In the optional scheme of the present embodiment one, at least two first rotating members are symmetrically set relative to the middle line of limiting groove It sets.I.e. above-mentioned first rotating member can be divided into two kinds of situations of even number and odd number.

The first situation, the first rotating member are even number, are illustrated for two, specifically such as Fig. 1 and Fig. 2 institute Show, 102 quantity of the first rotating member installed in limiting groove 103 is two, and two the first rotating members 102 are in limiting groove 103 middle line B is symmetrical arranged, i.e. each first rotating member 102 in left and right；Above-mentioned limiting groove 103 is symmetrical in middle line B in itself , middle line B is with vertical and through the reference line of 103 slot bottom of limiting groove.Two first can preferably be rotated simultaneously Part is arranged on same level height and position；After workpiece for measurement A is placed in limiting groove 103 in this way, the circumferential surface of workpiece for measurement A is by two The wheel face of the first rotating member 102 in a same level side's height is supported, and support effect is more preferable at this time, it is ensured that workpiece for measurement A rotation is more steady.It is four, six etc. that above-mentioned the first rotating member of even number 102, which can choose, for other even numbers Above-mentioned technical effect equally may be implemented in first rotation, no longer repeats one by one this utility model embodiment.

Second situation, the first rotating member are odd number, are illustrated for three, specific as shown in figure 3, limit is recessed 102 quantity of the first rotating member installed in slot is three, and above-mentioned first rotating member 102 can also be relative to the middle line of limiting groove B is symmetrical arranged；I.e. the first rotating member of two of them along limiting groove middle line bilateral symmetry, it is remaining one first rotation between It is arranged on middle line extension line.It can guarantee to realize workpiece for measurement all directions realize radial positioning effect in this way.Above-mentioned three A first rotating member 102 can realize " three-point fix " that three-point fix can guarantee that support is more stable to workpiece for measurement.

In one embodiment, more than two first rotating members 102 are specifically located at the groove edge of limiting groove It using the axis of workpiece for measurement as on the equal radiuses circular path of axis, and is evenly spaced on, positions along equal radiuses circular path Supporting way is more steady reliable.

In the optional scheme of the present embodiment one, more than three the first rotating members 102 can realize that " multiple spot is fixed to workpiece for measurement Position "；Multiple first rotating members 102 can realize multi-point support positioning to workpiece for measurement, and such support positioning method is more steady Reliably, the circular runout that can reduce workpiece for measurement A guarantees the measurement accuracy of roundness measuring device.

In addition, it is necessary to illustrate, above-mentioned supporting member is provided with installation axle 109, in order to facilitate the installation of the first rotating member 102；First rotating member 102 can be fixedly connected with installation axle 109 by key, pin, can also be interference fitted connection.

Embodiment two

As shown in figure 5, the utility model two provides a kind of supporting structure 100, have with the identical knot of embodiment one Structure, such as: supporting member 101 and at least two first rotating members 102 and limiting groove that are rotatably arranged on supporting member 101 103 etc.；Different to be, the utility model two provides a kind of supporting structure 100 and the knot such as pressing plate and mounting groove has also been devised Structure；

In the optional scheme of the present embodiment two, supporting structure 100 further includes pressing plate 104, pressing plate 104 and supporting member 101 It is flexibly connected.At least one second rotating member 105 is equipped on the pressing plate 104, and (second rotating member 105 can be mounted in branch Bearing in bearing member)；Second rotating member 105 equally can also be rotated with workpiece for measurement A；The second rotating member 105 on pressing plate 104 It is provided commonly for carrying out workpiece for measurement A radial clamping position movement with the first rotating member 102 in limiting groove 103.

It should be noted that the main function of the second rotating member on pressing plate is the limit for implementing to be compacted downwards to workpiece for measurement Position movement.It has illustrated in the above-described techniques simultaneously, the main function of the first rotating member 102 in the limiting groove is to be measured Workpiece implements the limit supported upwards movement；Comprehensive analysis is it is found that the second rotating member 105 and limiting groove on the pressing plate 104 The first cooperation jointly of rotating member 102 in 103, then can be combined position-limiting action to workpiece for measurement A；Second rotating member 105 to Lower compacting limit, the upward support limit of the first rotating member 102, and then effectively realize the radial clamping position to workpiece for measurement A Movement.

In the optional scheme of embodiment two, the first rotating member 102 on limiting groove 103 can be two, pressing plate 104 On second rotating member 105 is installed；Second rotating member 105 on the pressing plate 104 and two in limiting groove 103 First rotating member 102 matches, and realizes " three-point fix ", and then effectively can carry out radial positioning to workpiece for measurement A, and guarantee Workpiece for measurement A freely smoothly implements rotation.Meanwhile two the first rotating members 102 and the second rotating member 105 cooperation are realized The mode of three-point fix, structure is simple, and the location technology effect of realization is also very good.

In the optional scheme of the present embodiment two, it is hinged between pressing plate 104 and supporting member 101；One end of pressing plate 104 is logical It crosses pin shaft 106 and supporting member 101 is articulated and connected, the other end of pressing plate 104 is then provided with the handle portion 107 for facilitating manual operation.

It should be noted that as shown in figure 5, the length direction of pressing plate 104 is consistent with the length direction of supporting member；Pressing plate In the mounting groove 108 of 104 one end insertion supporting member 101, and realize that hingedly, the other end of pressing plate 104 is then by pin shaft 106 Handle portion, handle portion have the function of facilitating control pressing plate folding；Meanwhile race is offered in the middle part of the lower surface of pressing plate 104, Second rotating member 105 is installed in the race on pressing plate 104, and the second rotating member 105 can also design installation axle 109, i.e., In race clamped by two plate faces of the installation axle of second rotating member 105 through pressing plate 104；Second turn on pressing plate 104 The installation axle of moving part 105 can be fixedly connected with pressing plate 104 by key, pin, can also be interference fitted connection；Second on pressing plate The wheel face of rotating member 105 stretches out the lower surface of pressing plate 104.

In the optional scheme of the present embodiment two, the top surface of supporting member 101 is also provided with mounting groove 108；Limiting groove 103 It falls in and is opened up with the length direction of supporting member 101, and the length direction along supporting member 101 of mounting groove 108 opens up；Mounting groove The groove depth that 108 groove depth is greater than limiting groove 103 is used to adapt to the first rotating member 102 of installation different-diameter.

It should be noted that as shown in figure 5, the side being also provided with along the top surface of supporting member 101 is opened in the top surface of supporting member 101 The mounting groove 108 that edge extends, i.e. the length extending direction of mounting groove are parallel with the length direction of supporting member；Meanwhile limit is recessed Slot 103 extends vertically through two opposite plate faces of supporting member 101, and limiting groove 103 is located at the middle part of the top surface of supporting member；Peace The groove depth of tankage is greater than the groove depth of limiting groove, to be suitable for the first rotating member 102 of different-diameter.Two on supporting member The installation axle of one rotating member 102 runs through two opposite plate faces of supporting member 101, and a part of the first rotating member 102 is located at limit In the groove 103 of position, another part of the first rotating member 102 is located in mounting groove 108.

In the optional scheme of the present embodiment two, the first rotating member 102 and/or the second rotating member 105 are idler wheel (including axis Hold or the rotatable rotor of other structures form).

The supporting structure that the utility model embodiment two provides, the first rotating member 102 and the second rotating member 105 are preferably Using bearing, bearing is widely used, and facilitates materials；Bearing is assembled into supporting structure, also facilitates processing, and axis It is less expensive to hold cost.When the first rotating member 102 and the second rotating member 105 select bearing, the inner ring of bearing is socketed in peace It fills on axis 109, for contacting with workpiece for measurement, outer ring is rotated under the drive of workpiece for measurement relative to inner ring for the outer ring of bearing. Using bearing, as the first rotating member and the second rotating member, the steady and smooth rotation of rotating member may be implemented, simultaneously in the present embodiment Durability is good, and the service life is long, and rotating function is reliable and stable.

Embodiment three

Such as Fig. 6, shown in Fig. 7, correspondingly, the utility model embodiment three additionally provides a kind of roundness measuring device, including At least one supporting structure 100 as described in above-described embodiment, further includes measurement table 200 and bottom plate 300；Above-mentioned supporting structure 100 and measurement table 200 be arranged on backplate surface that (above-mentioned bottom plate can also fix end locating part 400 and gauge stand 500 etc. Structure)；Wherein, supporting structure 100 is for being supported positioning to workpiece for measurement A；The measuring staff 201 of measurement table 200 is for abutting In the circumferential surface of workpiece for measurement.That is circumferential surface of the end abutment of the measuring staff 201 of measurement table 200 in the detected part of workpiece for measurement A.To The rotation of workpiece A is surveyed, i.e. workpiece for measurement A is rotated around the axis of itself.After being clamped by supporting structure to workpiece for measurement A, It realizes radial positioning, in the case where ensureing the lesser situation of workpiece for measurement circumference surface wear, and reduces it to the full extent and rotating Circular runout in the process (i.e. workpiece for measurement A rotation process is freely and very steady).Above-mentioned measurement table preferably selects hundred Divide any one in table, amesdial or ten thousandth micrometer, the specific structure about above-mentioned measuring instrumentss repeats no more.

Further, (such as: sliding setting) is adjustably arranged on bottom plate 300 in supporting structure 100；The number of supporting structure Amount is multiple, and multiple supporting structure remains limiting groove corresponding to supporting structure on any sliding position on bottom plate In same rectilinear direction.It should be noted that above-mentioned roundness measuring device, by changing multiple supporting structure in bottom plate The clamping position for adapting to the workpiece for measurement of different length can be realized in sliding position on 300.Specifically, can pacify on bottom plate 300 Equipped with guide rail, supporting structure is installed on the sliding block matched with guide rail, and position of the sliding block on guide rail can pass through locking screw Nail is to adjust fixation；In addition, gauge stand and end locating part can also slide with bottom plate 300 and be arranged；Pass through the cunning of above-mentioned gauge stand 500 Movement is used, it might even be possible to be slided on the position between two supporting structures 100 gauge stand 500, then be operated on gauge stand 500 Table 200 is measured, realizes and cylindricity measurement is carried out to the periphery in the middle position workpiece for measurement A.

Further, roundness measuring device further includes end locating part 400, and end locating part is used for workpiece for measurement A's Implement axial limiting movement in end.As shown in Fig. 6 and Fig. 7, roundness measuring device further includes end locating part 400, end limit Position part 400 is for making the end abutment of workpiece for measurement A in the plate face of end locating part.In this way when workpiece for measurement A is rotated, survey Scale 200 measure always is same circumference on workpiece for measurement A.

Specifically, end locating part can be the various suitable structures such as limit plate, limited block, as long as can be in work to be measured It is limited on the length direction of part, prevents workpiece for measurement from the displacement of length direction occurring during rotation, guarantee to survey It is accurate and reliable to measure result.

Further, roundness measuring device further includes gauge stand 500, and measurement table is installed on gauge stand 500, and gauge stand and end Locating part is located at the side of same supporting structure, can save the space of roundness measuring device in this way；Most importantly, gauge stand 500 measurement position is closer at the locating part of end, and the rotation of such workpiece for measurement A is more stable, and circular runout is smaller, measurement knot Fruit precision is higher.Horizontal part 502 such as Fig. 6 and Fig. 7 gauge stand 500 with vertical portion 501 and with 501 integrally connected of vertical portion, Thousand tables point are installed on horizontal part 502, wherein the watchcase and horizontal part 502 of measurement table 200 by clip or can tighten screw It is fixedly connected, can guarantee the up and down motion of the measuring staff 201 of measurement table 200 in this way, measure the measuring staff state in a vertical shape of table；To After survey workpiece A is installed on supporting structure, the end of the measuring staff 201 of measurement table 200 is placed exactly in the outer peripheral surface of workpiece for measurement A Top.

The working principle and usage mode of three kinds of the utility model embodiment of roundness measuring device carry out brief below Illustrate:

Pressing plate 104 in step 1, opening supporting structure 100, the limit that a workpiece for measurement A is put into supporting member 101 are recessed In slot 103, realizes the first rotating member 102 in limiting groove 103 and the support limit of workpiece for measurement A is acted on；

Step 2 operates on the end top to end locating part 400 of workpiece for measurement A, to guarantee that end locating part 400 is real Axial limiting effect now is realized to one end of workpiece for measurement A.

Pressing plate 104 in step 3, rotation supporting structure 100 pushes down the second rotating member 105 on its pressing plate 104 to be measured Compacting position-limiting action is realized in the top of workpiece A.

Top (or the arc-shaped plate 202) for the measuring staff 201 that step 4, adjustment measure table 200 makes its contact measured workpiece A Front end outer circle make 200 needle of measurement table read.It should be noted that can be being adjusted in current location to measurement table 200 Zero.

As soon as step 5 can be manually rotated and read within workpiece for measurement A weeks the maxima and minima that measurement table 200 is shown, difference It is the circularities of workpiece for measurement A.

Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited System；Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should Understand: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of Technical characteristic is equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new The range of each embodiment technical solution of type.

Claims (14)

1. a kind of supporting structure for roundness measurement, which is characterized in that the supporting structure includes supporting member and is rotatably assorted At least two first rotating members on the supporting member；The circumferential surface and workpiece for measurement of at least two first rotating members The tangent contact of circumferential surface and clamping position to the workpiece for measurement is collectively formed, and first rotating member can be with institute State workpiece for measurement rotation.

2. supporting structure according to claim 1, which is characterized in that the supporting member is equipped with for accommodating the first rotating member Limiting groove；And the part of first rotating member protrudes from the groove edge of the limiting groove, first rotation Another part of part is hidden under the groove edge of the limiting groove.

3. supporting structure according to claim 2, which is characterized in that at least two first rotating members are relative to described The middle line of limiting groove is symmetrical arranged.

4. supporting structure according to claim 3, which is characterized in that the limiting groove is arc-shaped or V-arrangement.

5. supporting structure described in any one of -4 according to claim 1, which is characterized in that the supporting member is equipped with the first installation Slot, at least two first rotating members are located in first mounting groove.

6. supporting structure described in any one of -4 according to claim 1, which is characterized in that further include pressing plate, the pressing plate with The supporting member is flexibly connected, and the pressing plate is matched at least two first rotating members to clamp workpiece for measurement.

7. supporting structure according to claim 6, which is characterized in that one end of the pressing plate and the supporting member are hinged.

8. supporting structure according to claim 6, which is characterized in that be equipped at least one second rotation on the pressing plate Part, at least one described second rotating member and at least two first rotating members rotationally clamp workpiece for measurement jointly.

9. supporting structure according to claim 8, which is characterized in that first rotating member and/or second rotation Part is idler wheel.

10. a kind of roundness measuring device, which is characterized in that including at least one such as the described in any item bearings of claim 1-9 Structure and measurement table and bottom plate suitable for being measured to the workpiece for measurement being located on the supporting structure；The supporting structure And the measurement table is arranged on bottom plate.

11. roundness measuring device according to claim 10, which is characterized in that at least one described support structure location can Ground is adjusted to be arranged on the bottom plate.

12. roundness measuring device according to claim 11, which is characterized in that it further include gauge stand, the measurement table installation In on the gauge stand, the gauge stand position is adjustably arranged on the bottom plate.

13. roundness measuring device according to claim 12, which is characterized in that further include end locating part, the end Locating part is for limiting the axial direction of workpiece for measurement.

14. roundness measuring device according to claim 13, which is characterized in that the measurement table and the end locating part Positioned at the side of same supporting structure.