阅读说明：本技术 偏心孔位置校正装置及校正方法 (Eccentric hole position correction device and correction method ) 是由 赵文兵 王嘉斌 费东东 原金疆 于 2020-05-15 设计创作，主要内容包括：本发明提供一种偏心孔位置校正装置及校正方法,所述偏心孔位置校正装置包括定位法兰,具有与所述定位法兰的中心偏心的偏心孔；自定心组件,设置于所述定位法兰的中心位置；转动杆,所述转动杆的一端转动安装于所述偏心孔中；测量件,所述测量件固定连接于所述转动杆的远离所述定位法兰的一端。利用本发明能够对待测孔和基准孔的位置进行检测校正,并且该装置能够在基准孔直径变化较大时实现自定位。(The invention provides an eccentric hole position correcting device and a correcting method, wherein the eccentric hole position correcting device comprises a positioning flange and a correcting device, wherein the positioning flange is provided with an eccentric hole eccentric to the center of the positioning flange; the self-centering assembly is arranged at the center of the positioning flange; one end of the rotating rod is rotatably arranged in the eccentric hole; and the measuring part is fixedly connected with one end of the rotating rod, which is far away from the positioning flange. The invention can detect and correct the positions of the hole to be detected and the reference hole, and the device can realize self-positioning when the diameter of the reference hole changes greatly.)

1. An eccentric hole position correcting device, characterized by comprising:

the positioning flange is provided with an eccentric hole eccentric to the center of the positioning flange, and the eccentric distance of the eccentric hole is consistent with that of a workpiece to be measured;

the self-centering assembly is arranged at the center of the positioning flange;

one end of the rotating rod is rotatably arranged in the eccentric hole;

and the measuring part is fixedly connected with one end of the rotating rod, which is far away from the positioning flange.

2. The eccentric hole position correction device according to claim 1, wherein the eccentric hole position correction device further comprises a measuring piece connecting piece, and the measuring piece is fixedly connected to one end of the rotating rod away from the positioning flange through the measuring piece connecting piece.

3. The eccentric hole position correction device according to claim 1, further comprising a display device connected to the measuring member.

4. The eccentric hole position correcting device according to claim 1, wherein the measuring member comprises a displacement sensor, a dial indicator or a dial indicator.

5. The eccentric hole position correction device according to claim 1, further comprising a handle which is fixedly installed at an end of the rotating lever away from the measuring member.

6. The eccentric hole position correcting device according to claim 1, further comprising a bearing assembly through which one end of the rotating rod is fixedly installed in the eccentric hole.

7. An eccentric hole position correction device according to claim 1, characterized in that a side surface of the positioning flange away from the measuring piece is provided with a handle.

8. An eccentric hole position correcting apparatus according to any one of claims 1 to 7, wherein the positioning flange includes a body and an annular boss portion formed to project from a middle portion of the body toward one end of the measuring piece.

9. The eccentric hole position correcting device of claim 8, wherein the annular side wall of the boss part is provided with a plurality of through light holes distributed along the radial direction of the positioning flange, and the center of the main body part is provided with a central screw hole;

the self-centering assembly comprises:

the ejector rods are sleeved in the through unthreaded holes in a sliding mode, and one ends of the ejector rods can extend out of the outer end edges of the through unthreaded holes;

the compression spring assembly is sleeved at one end, close to the center of the positioning flange, of the ejector rod, one end of the compression spring assembly abuts against the inner end edge of the unthreaded hole, and the other end of the compression spring assembly abuts against one end, close to the center of the positioning flange, of the ejector rod;

the screw rod part of the conical head screw rod is in threaded connection with the central screw hole, and the conical head part of the conical head screw rod abuts against one end, close to the center of the positioning flange, of the ejector rod.

10. The eccentric hole position correcting device according to claim 9, wherein an end of the carrier rod near the center of the positioning flange is conical, and a half cone angle of the conical is complementary to a half cone angle of the conical head of the conical-head screw.

11. The eccentric hole position correcting device of claim 9, wherein the tail of the conical head screw is processed into a polygon.

12. The eccentric hole position correcting apparatus according to claim 9, wherein the compression spring assembly includes a compression spring and a shaft retainer, the shaft retainer being fitted around an end of the carrier rod near a center of the retainer flange.

13. A method of correcting a position of an eccentric hole, the method comprising:

providing the eccentric hole position correcting device of claim 1, comprising a positioning flange, a self-centering assembly, a rotating rod and a measuring piece;

positioning the positioning flange at the end edge of a datum hole by using the self-centering assembly;

debugging the measuring piece to enable the head of the measuring piece to point to the inner circle of the hole to be measured;

and rotating the rotating rod, and measuring the eccentricity between the hole to be measured and the reference hole by the measuring part.

Technical Field

The invention relates to the technical field of eccentricity measurement, in particular to an eccentric hole position correction device and method.

Background

In mechanical assembly, a hole (hole to be measured) on one workpiece is eccentric relative to a hole (reference hole) on the other workpiece, and certain requirements are imposed on eccentricity and orientation. In this case, the position of the hole needs to be detected and corrected, and the eccentricity is detected by using the reference hole as a positioning.

Disclosure of Invention

In view of the above-mentioned disadvantages of the prior art, an object of the present invention is to provide an eccentric hole position correcting device and a correcting method, which are used to solve the technical problem of the prior art that when the diameter of the reference hole changes greatly, the positioning is difficult.

To achieve the above and other related objects, the present invention provides an eccentric hole position correcting device, including:

the positioning flange is provided with an eccentric hole eccentric to the center of the positioning flange, and the eccentric distance of the eccentric hole is consistent with that of a workpiece to be measured;

the self-centering assembly is arranged at the center of the positioning flange;

one end of the rotating rod is rotatably arranged in the eccentric hole;

the measuring part is fixedly connected with the rotating rod, the rotating rod is far away from one end of the positioning flange, and the eccentricity of the eccentric hole is consistent with a workpiece to be measured.

In an embodiment, the eccentric hole position correction device further comprises a measuring part connecting part, and the measuring part is connected and fixed at one end, far away from the positioning flange, of the rotating rod through the measuring part connecting part.

In an embodiment, the eccentric hole position correcting device further comprises a display device, and the display device is connected with the measuring piece.

In one embodiment, the measuring member comprises a displacement sensor, a dial indicator or a dial indicator.

In an embodiment, the eccentric hole position correcting device further comprises a handle, and the handle is fixedly installed at one end, far away from the measuring part, of the rotating rod.

In an embodiment, the eccentric hole position correcting device further comprises a bearing assembly, and one end of the rotating rod is fixedly installed in the eccentric hole through the bearing assembly.

In one embodiment, the bearing assembly includes a bearing and a bearing seat.

In one embodiment, the bearing comprises a pair of angular contact ball bearings.

In one embodiment, a side surface of the positioning flange, which is away from the measuring piece, is provided with a handle.

In one embodiment, the positioning flange includes a body and an annular boss portion formed to protrude from a middle portion of the body toward one end of the measuring member.

In one embodiment, the body of the positioning flange has a hollow structure.

In one embodiment, the body of the positioning flange is provided with a plurality of fixing holes along the circumferential direction.

In one embodiment, the annular side wall of the boss part is provided with a plurality of through unthreaded holes distributed along the radial direction of the positioning flange, and the center of the main body part is provided with a central screw hole;

the self-centering assembly comprises:

the ejector rods are sleeved in the through unthreaded holes in a sliding mode, and one ends of the ejector rods can extend out of the outer end edges of the through unthreaded holes;

the compression spring assembly is sleeved at one end, close to the center of the positioning flange, of the ejector rod, one end of the compression spring assembly abuts against the inner end edge of the unthreaded hole, and the other end of the compression spring assembly abuts against one end, close to the center of the positioning flange, of the ejector rod;

the screw rod part of the conical head screw rod is in threaded connection with the central screw hole, and the conical head part of the conical head screw rod abuts against one end, close to the center of the positioning flange, of the ejector rod.

In one embodiment, one end of the ejector rod close to the center of the positioning flange is conical, and the half cone angle of the conical shape and the half cone angle of the conical head screw rod are complementary angles.

In one embodiment, one end of the ejector rod, which extends out of the outer end edge of the through unthreaded hole, is processed into a spherical shape.

In an embodiment, a plurality of through light holes distributed along the radial direction of the positioning flange are uniformly formed in the annular side wall of the boss portion.

In one embodiment, the tail of the conical-head screw is machined into a polygon shape.

In one embodiment, the compression spring assembly comprises a compression spring and a shaft retainer ring, and the shaft retainer ring is sleeved near one end of the ejector rod close to the center of the positioning flange.

To achieve the above and other related objects, the present invention also provides an eccentric hole position correcting method, including:

providing the eccentric hole position correcting device, wherein the eccentric hole position correcting device comprises a positioning flange, a self-centering assembly, a rotating rod and a measuring piece;

positioning the positioning flange at the end edge of a datum hole by using the self-centering assembly;

debugging the measuring piece to enable the head of the measuring piece to point to the inner circle of the hole to be measured;

and rotating the rotating rod, and measuring the eccentricity between the hole to be measured and the reference hole by the measuring part.

The invention provides a novel eccentric hole position correcting device capable of detecting and correcting the positions of a hole to be detected and a reference hole, which can realize positioning when the diameter of the reference hole changes greatly;

the eccentric hole position correcting device can be suitable for the situation that the hole to be measured is positioned in the workpiece, can be operated outside, and displays the measuring result of the measuring piece through the display device arranged outside.

Drawings

Fig. 1 shows a schematic view of the eccentric configuration of the holes of two workpieces.

Fig. 2 is a plan view showing an eccentric hole position correcting apparatus according to the present invention.

Fig. 3 is a cross-sectional view taken along a-a of fig. 2.

Fig. 4 shows an enlarged view of the region F in fig. 3.

Fig. 5 is a schematic structural view of the positioning flange of the present invention.

Fig. 6 is a cross-sectional view of the horizontal centerline position of fig. 5.

Detailed Description

The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.

Please refer to fig. 1-6. It should be noted that the drawings provided in the present embodiment are only for illustrating the basic idea of the present invention, and the components related to the present invention are only shown in the drawings rather than drawn according to the number, shape and size of the components in actual implementation, and the type, quantity and proportion of the components in actual implementation may be changed freely, and the layout of the components may be more complicated.

Referring to fig. 1, in mechanical assembly, a hole (hole to be measured 21) on one workpiece 2 is eccentric with respect to a hole (reference hole 11) on another workpiece 1, and there are certain requirements on eccentricity and orientation. At this time, the position of the hole needs to be detected and corrected, and therefore the invention provides a novel eccentric hole position correcting device.

Fig. 2 is a plan view showing an eccentric hole position correcting apparatus of the present invention, and fig. 3 is a sectional view taken along a-a of fig. 2, referring to fig. 2 and 3, the eccentric hole position correcting apparatus including, in order to achieve the above object and other related objects, the present invention provides an eccentric hole position correcting apparatus, including: a positioning flange 100 having an eccentric hole 106 (see fig. 5) eccentric to the center of the positioning flange 100, wherein the eccentricity of the eccentric hole 106 is consistent with the eccentricity of the workpiece to be measured (i.e. consistent with the standard eccentricity of the hole to be measured 21 and the reference hole 11 described above); a self-centering assembly disposed at a central position of the positioning flange 100; a rotating rod 900, wherein one end of the rotating rod 900 is rotatably installed in the eccentric hole 106; the measuring part 203 is fixedly connected to one end 901 of the rotating rod 900 far away from the positioning flange 100. With the eccentric hole position correcting device of the present embodiment, positioning can be achieved when the variation in the diameter of the reference hole is large.

Referring to fig. 2-6, in the present embodiment, the positioning flange 100 includes a disk-shaped body portion 102 and an annular boss portion 101 formed by protruding from the middle of the body portion to one end of the measuring member 203; the outer diameter of the boss portion 101 is slightly smaller than the diameter of the reference hole 11, so that the boss portion 101 can conveniently extend into the reference hole 11 and then be positioned by a self-centering assembly. Referring to fig. 2 to 6, a plurality of through holes 104 distributed along the radial direction of the positioning flange 100 are formed in the annular side wall of the boss portion 101, the through holes 104 are used for installing a post rod 300 of the self-centering assembly to be described later, and the diameter of the through holes 104 is slightly larger than that of the post rod 300, so that the post rod 300 can conveniently pass through and can also play a role in stabilizing the post rod 300; the center of the main body part 102 is provided with a central screw hole 105 for the threaded part 401 of a conical head screw 400 of the self-centering assembly to be described later to pass through; the main body of the positioning flange 100 is provided with a plurality of fixing holes 108 corresponding to screw holes (not shown) on the peripheral side of the end of the reference hole 11 of the workpiece 1 along the circumferential direction, and the fixing holes are used for fixing the main body 102 of the positioning flange 100 to the workpiece 1 by means of bolts or the like when the boss portion 101 of the positioning flange 100 is inserted into the reference hole 11 and positioning is completed. As an example, in order to be stressed uniformly and positioned more accurately, a plurality of through light holes 104 distributed along the radial direction of the positioning flange 100 are uniformly arranged on the annular side wall of the boss part 101; in a specific example, the number of the through light holes 104 may be 3, for example, and an included angle between two adjacent through light holes 104 is 120 °.

Referring to fig. 2-6, in order to reduce the weight of the whole device properly, the present invention is modified in two aspects, the first aspect is to arrange the boss portion 101 of the positioning flange 100 in a ring structure, and extend inward only at the corresponding position where the through light hole 104 is arranged, so as to form a plurality of extending portions (not shown), which not only reduces the weight of the whole device, but also stabilizes the post rod 300 of the self-centering assembly, which will be described later, by increasing the length of the through light hole 104; in a second aspect, the main body 102 inside the annular boss portion 101 is hollowed out to form a hollowed-out structure 107, except for a central area reserved in the middle of the main body 102 for providing the central screw hole 105 and the eccentric hole 106 and an extension area of the annular boss portion 101, and the hollowed-out structure 107 can also be used as an observation or operation hole.

Referring to fig. 3, in this embodiment, the eccentric hole position correcting device further includes a measuring part connecting part 201, the measuring part 203 is connected and fixed to an end 901 of the rotating rod 900 far from the positioning flange 100 through the measuring part connecting part 201, the measuring part connecting part 201 may be, for example, a clamping part, which clamps and fixes an end of the rotating rod 900 far from the positioning flange 100, and a vertical distance between the measuring part 203 and the positioning flange 100 may be adjusted through the measuring part connecting part 201, so as to be suitable for situations with different reference hole depths, that is, the measuring part 203 may change a height of the measuring part 203 through the measuring part connecting part 201.

It should be noted that, in this embodiment, the measuring part 203 employs a displacement sensor, but it is understood that, in other embodiments, the measuring part 203 may also employ a dial indicator or a dial indicator, for example. It should be noted that, in order to ensure the accuracy of the measurement, the measuring end of the measuring part 203 needs to be perpendicular to the axis of the hole 2 to be measured, or the measuring end of the measuring part 203 needs to be perpendicular to the rotating rod 900.

As shown in fig. 3, when the hole to be measured is located inside the workpiece, since the measuring part 203 also extends into the hole to be measured, which is not convenient for data observation, an external display device 202 is provided, and the display device 202 is connected to the output end of the measuring part 203 in a wired or wireless manner, so as to display the measurement result of the measuring part 203.

Referring to fig. 2 and 3, in order to facilitate external operation, the eccentric hole position correcting device further includes a handle 903, the handle 903 is installed and fixed at one end of the rotating rod 900, which is far away from the measuring part 203, and the rotating rod 900 can be externally operated to rotate through the handle 903, so that the measuring part 203 thereon is driven to rotate, and the measurement of the eccentric distance is realized.

Referring to fig. 2 and 3, in this embodiment, the eccentric hole position correcting device further includes a bearing assembly, and one end 902 of the rotating rod 900 is fixed in the eccentric hole 106 through the bearing assembly, and it is required to ensure that the rotating rod 900 is perpendicular to the main body portion 102 of the positioning flange 100. Specifically, the bearing assembly comprises a bearing seat 700 and a bearing 800, the bearing seat 700 is positioned and mounted with an eccentric hole 106 on a positioning flange 100 through an outer cylindrical surface or an outer conical surface of the bearing seat 700, a bearing hole for mounting the bearing 800 is arranged on the bearing seat 700, and the bearing hole is concentric with the outer cylindrical surface or the outer conical surface of the bearing seat 700; one end 902 of the rotating rod 900, which is far away from the measuring part 203, is mounted and supported in a bearing hole of the bearing seat 700 through the bearing 800. As an example, the bearing 800 may be a pair of angular contact ball bearings 800, and in other examples, other types of bearings 800 may be used as long as the precision requirement can be ensured.

Referring to fig. 2 and 3, in order to facilitate the access to the eccentric hole position correcting device, a handle 103 is disposed on a side surface of the positioning flange 100 away from the measuring member 203. As an example, the handle 103 may be, for example, a pair of handles 103 symmetrically disposed on a side surface of the main body portion 102 of the positioning flange 100 away from the measuring piece 203. For example, a rubber sleeve (not shown) may be provided on the handle 103 to facilitate gripping.

Referring to fig. 2-4, in the present embodiment, the self-centering assembly includes: the push rods 300 are slid in the through unthreaded holes 104 in a sliding manner, and one ends of the push rods 300 can extend out of the outer end edges of the through unthreaded holes 104; the compression spring assembly is sleeved at one end, close to the center of the positioning flange 100, of the ejector rod 300, one end of the compression spring assembly abuts against the inner end edge of the unthreaded hole, and the other end of the compression spring assembly abuts against one end, close to the center of the positioning flange 100, of the ejector rod 300; the screw part of the conical head screw 400 is in threaded connection with the central screw hole 105, and the conical head 402 of the conical head screw 400 abuts against one end of the top rod 300 close to the center of the positioning flange 100.

Referring to fig. 2 to 4, in this embodiment, the ejector rod 300 may be, for example, a cylinder, one end (inner end) of the cylinder close to the center of the positioning flange 100 is conical, a half cone angle of the conical shape and a half cone angle of the conical head 402 of the conical head screw 400 are complementary angles, and the other end (outer end) of the ejector rod 300 is processed into a spherical shape or other shape adapted to the hole wall of the reference hole 11, so as to be more fully contacted with the reference hole 11, and thus, centering and fixing are achieved. It should be noted that in other embodiments, other structures of the self-centering assembly may be used to achieve the self-centering function.

Referring to fig. 2 to 4, the tail 403 of the conical head screw 400 is processed into a polygon (e.g., a square, a pentagon, a hexagon, etc.), which facilitates rotation of a wrench, so as to change the height position of the conical head 402 of the conical head screw 400, and thus, through the conical interaction between the conical head 402 and the inner end of the push rod 300, the outer end of the push rod 300 is pushed to extend out of the outer end edge of the through unthreaded hole 104 to abut against the sidewall of the reference hole 11, thereby achieving a self-centering function, or under the action of the compression spring assembly, the outer end of the push rod 300 is retracted into the through unthreaded hole 104 to be separated from the sidewall of the reference hole, so as to take out the eccentric hole position correcting device.

Referring to fig. 2-4, in the present embodiment, the compression spring assembly includes a compression spring 600 and a shaft retainer 500, and the shaft retainer 500 is disposed near an end of the carrier rod 300 near the center of the positioning flange 100.

The use method of the eccentric hole position correction device of the embodiment is as follows:

firstly, a boss part 101 of a positioning flange 100 extends into a reference hole, and the flange end part of the positioning flange 100 is contacted with the end surface of the reference hole;

step two, adjusting the position of the measuring piece 203 to make the head (or measuring end) of the measuring piece 203 point to the inner circle of the hole to be measured;

rotating the conical head screw rod 400 to enable the conical head screw rod 400 to axially displace, wherein the conical head part drives a plurality of ejector rods 300 to synchronously move along the radial direction of the flange through the conical surfaces of the ejector rods 300 so as to abut against the side wall of the reference hole, so that self-positioning is realized;

fine-adjusting the positioning flange 100, fixing the positioning flange 100 and the workpiece 1 in a bolt mode or the like, and certainly, fixing can be realized by directly depending on the supporting force of the ejector rod 300;

and step five, rotating the handle 903, displaying observation readings through the display device 202, specifically, displaying the maximum value a and the minimum value b of the observation readings, wherein the deviation of the actual eccentricity from the theoretical value is (a-b)/2, and the direction of the deviation can be known from the orientations of the value a and the value b.

In summary, the invention provides a novel eccentric hole position correction device capable of detecting and correcting the positions of a hole to be detected and a reference hole, and the device can realize positioning when the diameter of the reference hole changes greatly; the eccentric hole position correcting device can be suitable for the situation that the hole to be measured is positioned in the workpiece, can be operated outside, and displays the measuring result of the measuring piece 203 through the display device 202 arranged outside.

In the description herein, numerous specific details are provided, such as examples of components and/or methods, to provide a thorough understanding of embodiments of the invention. One skilled in the relevant art will recognize, however, that an embodiment of the invention can be practiced without one or more of the specific details, or with other apparatus, systems, assemblies, methods, components, materials, parts, and/or the like. In other instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring aspects of embodiments of the invention.

Reference throughout this specification to "one embodiment", "an embodiment", or "a specific embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment, and not necessarily all embodiments, of the present invention. Thus, respective appearances of the phrases "in one embodiment", "in an embodiment", or "in a specific embodiment" in various places throughout this specification are not necessarily referring to the same embodiment. Furthermore, the particular features, structures, or characteristics of any specific embodiment of the present invention may be combined in any suitable manner with one or more other embodiments. It is to be understood that other variations and modifications of the embodiments of the invention described and illustrated herein are possible in light of the teachings herein and are to be considered as part of the spirit and scope of the present invention.

It will also be appreciated that one or more of the elements shown in the figures can also be implemented in a more separated or integrated manner, or even removed for inoperability in some circumstances or provided for usefulness in accordance with a particular application.

Additionally, any reference arrows in the drawings/figures should be considered only as exemplary, and not limiting, unless otherwise expressly specified. Further, as used herein, the term "or" is generally intended to mean "and/or" unless otherwise indicated. Combinations of components or steps will also be considered as being noted where terminology is foreseen as rendering the ability to separate or combine is unclear.

As used in the description herein and throughout the claims that follow, "a", "an", and "the" include plural references unless otherwise indicated. Also, as used in the description herein and throughout the claims that follow, unless otherwise indicated, the meaning of "in …" includes "in …" and "on … (on)".

The above description of illustrated embodiments of the invention, including what is described in the abstract of the specification, is not intended to be exhaustive or to limit the invention to the precise forms disclosed herein. While specific embodiments of, and examples for, the invention are described herein for illustrative purposes only, various equivalent modifications are possible within the spirit and scope of the present invention, as those skilled in the relevant art will recognize and appreciate. As indicated, these modifications may be made to the present invention in light of the foregoing description of illustrated embodiments of the present invention and are to be included within the spirit and scope of the present invention.

The systems and methods have been described herein in general terms as the details aid in understanding the invention. Furthermore, various specific details have been given to provide a general understanding of the embodiments of the invention. One skilled in the relevant art will recognize, however, that an embodiment of the invention can be practiced without one or more of the specific details, or with other apparatus, systems, assemblies, methods, components, materials, parts, and/or the like. In other instances, well-known structures, materials, and/or operations are not specifically shown or described in detail to avoid obscuring aspects of embodiments of the invention.

Thus, although the present invention has been described herein with reference to particular embodiments thereof, a latitude of modification, various changes and substitutions are intended in the foregoing disclosures, and it will be appreciated that in some instances some features of the invention will be employed without a corresponding use of other features without departing from the scope and spirit of the invention as set forth. Thus, many modifications may be made to adapt a particular situation or material to the essential scope and spirit of the present invention. It is intended that the invention not be limited to the particular terms used in following claims and/or to the particular embodiment disclosed as the best mode contemplated for carrying out this invention, but that the invention will include any and all embodiments and equivalents falling within the scope of the appended claims. Accordingly, the scope of the invention is to be determined solely by the appended claims.