CN211651567U

CN211651567U - Measuring device for measuring fillet radius

Info

Publication number: CN211651567U
Application number: CN202020194375.7U
Authority: CN
Inventors: 叶瑞夺; 王超; 张云江
Original assignee: Research Institute of Physical and Chemical Engineering of Nuclear Industry
Current assignee: Research Institute of Physical and Chemical Engineering of Nuclear Industry
Priority date: 2020-02-21
Filing date: 2020-02-21
Publication date: 2020-10-09
Anticipated expiration: 2030-02-21

Abstract

The utility model discloses a measuring device for measure fillet radius, this measuring device combine Y to adjust platform and angularly adjustable clamping device in order to realize that the centre gripping is fixed the piece that awaits measuring and adjust its and the angle on the XZ plane and in Y axle direction position on the basis of roughness profile appearance. The roughness contourgraph is introduced into a method for measuring the fillet radius at the intersection of the cylindrical surface and other curved surfaces or planes, so that the fillet radius can be quantitatively measured, and the measurement precision and the measurement efficiency are effectively improved.

Description

Measuring device for measuring fillet radius

Technical Field

The utility model relates to a machining technology field especially relates to a measuring device for measure fillet radius.

Background

The method for measuring the fillet at the intersection of the cylindrical surface and other curved surfaces or planes generally comprises two methods, namely contact measurement and non-contact measurement, wherein the most common method for contact measurement is a radius template (R gauge) detection method, and the most common detection method for non-contact measurement is to measure the fillet by using a universal tool microscope.

The R rule is a standard part, the specification is limited, usually, only qualitative judgment can be made whether the measured fillet is matched with the R rule in size, and the accurate radius value of the fillet which is not in the R rule in size cannot be measured, so that the R rule has great limitation. The universal tool microscope is used for measuring the fillet, the fillet is compared with a measured piece through a radius reticle set in a lens, the universal tool microscope is the same as the R gauge in measurement principle, and whether the fillet with fixed specification meets the requirement can only be judged, and an accurate measurement value cannot be obtained.

In addition, the fillet radius at the intersection of the cylindrical surface and other curved surfaces or planes, as shown in fig. 1 or fig. 2, is not a quantitative measure of such fillet radius because it is difficult to ensure that the measurement plane passes through the cylindrical axis.

Disclosure of Invention

The utility model aims at solving the problem that the fillet radius measuring method can not obtain accurate measurement value in the prior art, and is difficult to guarantee that the measuring plane passes through the defect of cylinder axis, and provide a measuring device for measuring the intersection fillet radius of cylinder face and other curved surfaces or plane, this measuring device combines Y to adjust platform and angularly adjustable clamping device in order to realize that the centre gripping is fixed on roughness profile appearance's basis the piece that awaits measuring and adjust its and XY planar angle and in Y axle direction position.

For realizing the utility model discloses a technical scheme that the purpose adopted is:

a measuring device for measuring the radius of a fillet comprises a roughness profiler and an angle-adjustable clamping device, wherein the angle-adjustable clamping device is arranged on a base station of the roughness profiler through a Y-direction adjusting platform;

the angle-adjustable clamping device comprises a base, a clamping device main body used for fixing a piece to be measured and an angle adjusting assembly used for adjusting an included angle between the clamping device main body and an XY plane; one end of the clamping device main body is hinged with one end of the base, and the other end of the clamping device main body is installed at the other end of the base through an angle adjusting assembly;

the Y-direction adjusting platform comprises a bottom plate adjustably fixed on the base platform, a sliding plate which is slidably mounted on the bottom plate and can slide along the Y-axis direction, and a micrometer screw head for adjusting the Y-axis direction position of the sliding plate.

The measuring method of the measuring device comprises the following steps:

step 1: clamping and fixing a piece to be detected, and ensuring that the axis of a cylindrical surface in the piece to be detected is parallel to an XZ plane;

step 2: adjusting the included angle between the axis of the cylindrical surface in the piece to be measured and the XY plane to ensure that a measuring pin in the roughness contourgraph can smoothly contact the fillet contour of the piece to be measured;

and step 3: adjusting the positions of a measuring needle in the roughness contourgraph in the X-axis direction and the Z-axis direction to enable the measuring needle to be in contact with the cylindrical surface of the piece to be measured, adjusting the position of the piece to be measured in the Y-axis direction to enable the measuring needle to form an arc line parallel to an XY plane when the measuring needle passes through the cylindrical surface of the piece to be measured, finding the highest point of the arc line through the roughness contourgraph, wherein the XZ plane where the highest point is located is a measuring plane, fixing the piece to be measured, and enabling the measuring needle to be aligned with the highest point;

and 4, step 4: and picking and measuring the fillet profile of the part to be measured at the intersection of the cylindrical surface and other curved surfaces or planes on the measuring plane by using a roughness profiler, and calculating the radius of the fillet according to the fillet profile.

In the technical scheme, the clamping device main part includes the main part board, fixes slide rail on the main part board, fix the slide rail bottom is used for the bearing the fixed block of a one end of awaiting measuring, follow the slide rail slides and is used for compressing tightly the tight slider of the relative other end of piece of awaiting measuring and is used for the drive the gliding drive assembly of tight slider, main part board one end with the one end of base is articulated, and the other end pass through angle adjusting part install in the other end of base.

In the above technical scheme, the driving assembly includes a limit nut fixed on the plane of the slide rail and a rotary screw rod penetrating the limit nut and in threaded fit with the limit nut, and an end of the rotary screw rod is rotatably connected with the clamping slider through a bearing to drive the clamping slider to slide along the slide rail.

In the above technical scheme, a handle is arranged at the top end of the rotary screw rod.

In the above technical scheme, the angle adjusting assembly comprises an arc-shaped guide rail with one end fixed on the base, a threaded hole formed in the side face of the main body plate, and an angle adjusting nut which is arranged in the arc-shaped guide rail in a sliding mode and in threaded connection with the threaded hole to lock the angle.

In the above technical scheme, the angle adjusting nut is a butterfly nut.

In the technical scheme, the effective clamping stroke of the arc-shaped guide rail is 0-80mm, and the adjustable angle range is 0-60 degrees.

In the above technical solution, the roughness profiler includes a base, a Z-axis guide rail fixed on the base, a Z-axis guide module sliding along the Z-axis guide rail, an X-axis measuring arm mounted on the Z-axis guide module and capable of moving along an X-axis, and a measuring pin mounted on an end of the X-axis measuring arm through a rotation driving mechanism.

In the technical scheme, the base station is provided with a T-shaped groove along the X direction, two sides of the bottom plate are respectively provided with a connecting piece, and the connecting pieces are fixedly connected to the base station through T-shaped bolts and nuts in a matched mode.

In the technical scheme, the Y-direction adjusting range of the sliding plate is 0-25 mm.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model provides a measuring device for be used for measuring face of cylinder and other curved surfaces or planar crossing department fillet radius combines Y to adjust platform and angularly adjustable clamping device in order to realize the centre gripping fixed on roughness profile appearance's basis await measuring and adjust its and XY planar angle and in Y axle direction position. The problem of be difficult to find the measuring plane through the cylinder axis when cylinder and curved surface or plane intersection fillet radius are measured is solved.

2. The utility model provides a measuring method for be used for measuring face of cylinder and other curved surfaces or planar crossing department fillet radius's measuring device, after the Y axle direction position through the piece that awaits measuring of adjustment combines roughness profile appearance's measuring pin to confirm to measure the plane, uses roughness profile appearance to pick up and measure the fillet radius of the piece that awaits measuring. The roughness contourgraph can directly measure the measured surface, intuitively reflects the information of the measured surface, is widely applied to the measurement of the surface roughness and the profile of the measured piece, and has wide application range, high measurement precision and high measurement efficiency. The roughness contourgraph is introduced into the method for measuring the fillet radius at the intersection of the cylindrical surface and other curved surfaces or planes, the measurement precision is high, the accuracy is high, and the measurement uncertainty can reach 1.3 mu m.

Drawings

Fig. 1 is a schematic structural diagram of a to-be-measured piece in which a cylindrical surface and a plane intersect in the background art;

FIG. 2 is a schematic structural diagram of a to-be-measured object in which a cylindrical surface intersects with other curved surfaces in the background art;

FIG. 3 is a schematic structural view of a measuring apparatus according to embodiment 2;

FIG. 4 is a schematic structural view of a Y-direction adjustment platform;

FIG. 5 is a schematic view of an angularly adjustable clamping device;

fig. 6 is a schematic structural diagram of the roughness profiler.

In the figure: the device comprises a cylindrical surface A, a plane B, other curved surfaces C, a rounded corner R, a roughness contourgraph 1, a 2-Y-direction adjusting platform, an angle-adjustable clamping device 3, a part to be measured 4, a base station 5, a Z-axis guide rail 6, a Z-axis guide module 7, an X-axis measuring arm 8, a measuring needle 9, a spiral micrometer head 10, a bottom plate 11, a sliding plate 12, a base 13, an angle adjusting nut 14, a rotating screw rod 15, a clamping slide block 16, a clamping device body 17, an arc-shaped guide rail 18, a threaded hole 19, a main body plate 20, a sliding rail 21, a fixed block 22, a limiting nut 23, a handle 24, a T-shaped groove 25 and a connecting piece 26.

Detailed Description

The present invention will be described in further detail with reference to specific examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Example 1

A method for measuring the fillet radius of the intersection of a cylindrical surface and other curved surfaces or planes comprises the following steps:

step 1: clamping and fixing the piece to be detected 4, and ensuring that the axis of the cylindrical surface in the piece to be detected 4 is parallel to the XZ plane;

step 2: adjusting the angle of the piece to be measured 4 to ensure that a measuring pin 9 in the roughness contourgraph 1 can smoothly and freely measure the fillet contour of the piece to be measured 4;

and step 3: adjusting the positions of a measuring needle 9 in the roughness contourgraph 1 in the X-axis direction and the Z-axis direction to enable the measuring needle to be in contact with the cylindrical surface of the to-be-measured piece 4, adjusting the position of the to-be-measured piece 4 in the Y-axis direction to enable the measuring needle 9 to pass through the cylindrical surface of the to-be-measured piece 4 to form an arc line parallel to an XY plane, finding the highest point (namely the point closest to the horizontal distance of the measuring needle 9) of the arc line through the roughness contourgraph 1, fixing the to-be-measured piece 4 at the position of the highest point corresponding to the Y-axis direction, wherein the XZ plane where the highest point is;

and 4, step 4: and (3) picking and measuring the fillet profile of the part 4 to be measured at the intersection of the cylindrical surface and other curved surfaces or planes on the measuring plane by using the roughness profiler 1, and calculating the radius of the fillet according to the fillet profile.

In the measuring method, the axis of the cylindrical surface is adjusted to be parallel to the XZ plane in the step 1, and an arc line parallel to the XY plane is carved on the cylindrical surface in the step 3 to find the plane where the axis of the cylindrical surface is located, namely the measuring plane, so that the problem that the measuring plane passing through the axis of the cylinder is difficult to find when the fillet radius at the intersection of the cylindrical surface and the curved surface or the plane is measured is solved. Meanwhile, the high-precision and quantitative measurement of the radius of the fillet at the intersection of the cylinder and the curved surface or the plane is realized by combining a roughness contourgraph with wide application range and high measurement precision.

Example 2

A measuring device for measuring the fillet radius of the intersection of a cylindrical surface and other curved surfaces or planes is shown in figure 3 and comprises a roughness profiler 1, a Y-direction adjusting platform 2 for adjusting the position of a piece to be measured 4 in the Y-axis direction, and an angle-adjustable clamping device 3 for clamping the piece to be measured 4 and adjusting the included angle between the angle and the XY plane;

the Y-direction adjusting platform 2 is a Mahr CT200 type adjusting platform, and as shown in fig. 4, includes a bottom plate 11 adjustably fixed on the base 5 of the roughness profiler 1, a sliding plate 12 slidably mounted on the bottom plate 11 and capable of sliding along the Y-axis direction, and a micrometer screw head 10 for adjusting the Y-axis direction position of the sliding plate 12;

the clamping device 3 with the adjustable angle, as shown in fig. 5, includes a base 13 fixed on the sliding plate 12, a clamping device body 17 for clamping the to-be-measured piece 4, and an angle adjusting component for adjusting an included angle between the clamping device body 17 and the XY plane, wherein one end of the clamping device body 17 is hinged to one end of the base 13, and the other end is installed at the other end of the base 13 through the angle adjusting component for angle adjustment.

The measuring method of the measuring device comprises the following steps:

step 1: fixing a bottom plate 11 in the Y-direction adjusting platform 2 on the base platform 5, clamping and fixing the piece to be measured 4 on a clamping device main body 17, fixing the angle-adjustable clamping device 3 on a sliding plate 12, and ensuring that the axis of a cylindrical surface in the piece to be measured 4 is parallel to an XZ plane;

step 2: the angle between the clamping device main body 17 and the XY plane is adjusted through the angle adjusting assembly so as to ensure that the measuring needle 9 in the roughness profile instrument 1 can measure the fillet profile of the piece to be measured 4 without obstacles;

and step 3: adjusting the positions of a measuring needle 9 in the roughness contourgraph 1 in the X-axis direction and the Z-axis direction to enable the measuring needle to be in contact with a cylindrical surface in a piece to be measured 4, adjusting the position of the piece to be measured 4 in the Y-axis direction to enable the measuring needle 9 to pass through the cylindrical surface of the piece to be measured 4 to form an arc line parallel to an XY plane, finding the highest point (namely the point closest to the horizontal distance of the measuring needle 9) of the arc line through the roughness contourgraph 1, wherein the XZ plane where the highest point is located is a measuring plane, and fixing the Y-direction adjusting platform 2 to enable the measuring needle 9 to be aligned with the highest point;

and 4, step 4: and picking and measuring the fillet profile of the part 4 to be measured at the intersection of the cylindrical surface and other curved surfaces or planes on the measuring plane by using the roughness profiler 1, and calculating to obtain the fillet radius according to the fillet profile.

Example 3

This embodiment is a detailed structure of the angle-adjustable clamping device described in embodiment 2.

The angle-adjustable clamping device (3) comprises a base (13), a clamping device main body (17) for fixing the piece to be measured (4) and an angle adjusting component for adjusting an included angle between the clamping device main body (17) and an XY plane, as shown in FIG. 5; one end of the clamping device main body (17) is hinged with one end of the base (13), and the other end of the clamping device main body is installed at the other end of the base (13) through an angle adjusting assembly;

clamping device main part 17, as shown in fig. 5, include main part board 20, fix slide rail 21 on the main part board 20, fix slide rail 21 bottom is used for the bearing the fixed block 22 of 4 one end that awaits measuring, edge slide rail 21 slides and is used for compressing tightly the tight slider 16 of the relative other end of 4 that awaits measuring and is used for the drive press from both sides the gliding drive assembly of tight slider 16, main part board 20 one end with the one end of base 13 is articulated, and the other end pass through angle adjusting part install in the other end of base 13.

The driving assembly comprises a limiting nut 23 fixed on the plane of the sliding rail 21 and a rotary screw 15 penetrating through the limiting nut 23 and in threaded fit with the limiting nut 23, the end of the rotary screw 15 is rotatably connected with the clamping slide block 16 through a bearing to drive the clamping slide block 16 to slide along the sliding rail 21, and the clamping slide block 16 and the rotary screw 15 do not move relatively in the axial direction of the rotary screw 15.

When the device is used, the to-be-tested part 4 is placed on the fixed block 22, and then the rotating screw 15 is rotated to drive the clamping slide block 16 to slide downwards along the slide rail 21, so that the to-be-tested part 4 is pressed tightly.

Preferably, a handle 24 is disposed at the top end of the rotary screw 15 for controlling the rotary screw 15.

The angle adjusting assembly comprises an arc-shaped guide rail 18 with one end fixed on the base 13, a threaded hole 19 formed in the side face of the main body plate 20, and an angle adjusting nut 14 which slides in the arc-shaped guide rail 18 and is in threaded connection with the threaded hole 19 to lock an angle, wherein the angle adjusting nut 14 is a butterfly nut.

Preferably, the effective clamping stroke of the arc-shaped guide rail 18 is 0-80mm, the adjustable angle range is 0-60 degrees, and the angle of the workpiece to be measured can be effectively adjusted within the range, so that the round corner profiles of the workpieces to be measured with various specifications and sizes can be measured without obstacles by the measuring needle 9 in the roughness profiler 1.

Example 4

This embodiment is a detailed structure of the roughness profiler based on embodiment 2.

Most of the roughness profilometers on the market can be applied to the measuring device, and the model used in the embodiment is Mahr Surf UD 120.

As shown in fig. 6, the roughness profiler 1 includes a base 5, a Z-axis guide rail 6 fixed on the base 5, a Z-axis guide module 7 sliding along the Z-axis guide rail 6, and an X-axis measuring arm 8 mounted on the Z-axis guide module 7 and used for adjusting the position of a measuring needle 9 in the X-axis direction, wherein the measuring needle 9 is mounted at an end of the X-axis measuring arm 8 and rotates around the Y-axis within a certain angle.

The base station 5 is provided with a T-shaped groove 25 along the X direction, two sides of the bottom plate 11 are respectively provided with a connecting piece 26, and the connecting pieces 26 are fixedly connected to the base station 5 through T-shaped bolts and nuts in a matched mode.

The T-shaped nut of the T-shaped bolt enters the T-shaped groove 25 from the end part, and the screw rod penetrates through the through hole in the connecting piece 26 and then is matched and fixed with the nut. After the nut is screwed, the bottom plate 11 is fixedly connected with the base station 5, and after the nut is unscrewed, the bottom plate 11 slides on the base station 5 along the T-shaped groove 25 so as to adjust the position of the bottom plate 11.

The number of the T-shaped grooves 25 is 3, and the appropriate T-shaped grooves 25 can be selected for mounting the bottom plate 11 according to the specific shape of the piece to be tested.

The Y-direction adjusting range of the sliding plate 12 is 0-25mm, and the detection requirements of most of pieces to be detected can be met.

Spatially relative terms, such as "upper," "lower," "left," "right," and the like, may be used in the embodiments for ease of description to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatial terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "lower" can encompass both an upper and a lower orientation. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Moreover, relational terms such as "first" and "second," and the like, may be used solely to distinguish one element from another element having the same name, without necessarily requiring or implying any actual such relationship or order between such elements.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The measuring device for measuring the radius of the fillet is characterized by comprising a roughness profiler (1) and an angle-adjustable clamping device (3) which is arranged on a base station (5) of the roughness profiler (1) through a Y-direction adjusting platform (2);

the angle-adjustable clamping device (3) comprises a base (13), a clamping device main body (17) used for fixing the piece to be measured (4) and an angle adjusting assembly used for adjusting an included angle between the clamping device main body (17) and an XY plane; one end of the clamping device main body (17) is hinged with one end of the base (13), and the other end of the clamping device main body is installed at the other end of the base (13) through an angle adjusting assembly;

the Y-direction adjusting platform (2) comprises a bottom plate (11) adjustably fixed on the base platform (5), a sliding plate (12) which is slidably installed on the bottom plate (11) and can slide along the Y-axis direction, and a micrometer screw head (10) used for adjusting the Y-axis direction position of the sliding plate (12).

2. The measuring device according to claim 1, wherein the clamping device body (17) comprises a body plate (20), a slide rail (21) fixed on the body plate (20), a fixing block (22) fixed at the bottom end of the slide rail (21) for supporting one end of the to-be-measured piece (4), a clamping slider (16) sliding along the slide rail (21) for pressing the opposite end of the to-be-measured piece (4), and a driving component for driving the clamping slider (16) to slide, one end of the body plate (20) is hinged to one end of the base (13), and the other end is mounted at the other end of the base (13) through an angle adjusting component.

3. The measuring device according to claim 2, characterized in that the driving assembly comprises a limit nut (23) fixed on the plane of the slide rail (21) and a rotary screw (15) passing through the limit nut (23) and in threaded engagement therewith, wherein an end of the rotary screw (15) is rotatably connected with the clamping slider (16) to drive the clamping slider (16) to slide along the slide rail (21).

4. A measuring device as claimed in claim 3, characterised in that said rotating screw (15) is provided at its top end with a handle (24).

5. The measuring device according to claim 2, characterized in that the angle adjustment assembly comprises an arc-shaped guide rail (18) having one end fixed to the base (13), a threaded hole (19) opened in a side surface of the main body plate (20), and an angle adjustment nut (14) sliding in the arc-shaped guide rail (18) and threadedly coupled with the threaded hole (19) to lock an angle.

6. A measuring device as claimed in claim 5, characterized in that the angle-adjusting nut (14) is a wing nut.

7. A measuring device as claimed in claim 5, characterized in that the arc-shaped guide (18) has an effective clamping travel of 0-80mm and an adjustable angle range of 0-60 °.

8. The measuring device according to claim 1, wherein the roughness profiler (1) comprises a base (5), a Z-axis guide rail (6) fixed on the base (5), a Z-axis guide module (7) sliding along the Z-axis guide rail (6), and an X-axis measuring arm (8) mounted on the Z-axis guide module (7) for adjusting the position of a measuring needle (9) in the X-axis direction, the measuring needle (9) being mounted on the end of the X-axis measuring arm (8) by a rotary drive mechanism.

9. The measuring device according to claim 8, wherein the base (5) is provided with a T-shaped groove (25) along the X-axis direction, two sides of the bottom plate (11) are respectively provided with a connecting piece (26), and the connecting pieces (26) are fixedly connected to the base (5) through T-shaped bolt and nut matching.

10. A measuring device as claimed in claim 1, characterized in that the Y-adjustment range of the slide plate (12) is 0-25 mm.