Eccentric hole position correction device and correction method

Abstract

The present invention provides an eccentric hole position correction device and correction method, the eccentric hole position correction device comprises a positioning flange, having an eccentric hole eccentric to the center of the positioning flange; a self-centering component, arranged at the center of the positioning flange; a rotating rod, one end of which is rotatably installed in the eccentric hole; and a measuring piece, which is fixedly connected to the end of the rotating rod away from the positioning flange. The present invention can detect and correct the positions of the hole to be measured and the reference hole, and the device can achieve self-positioning when the diameter of the reference hole changes greatly.

Description

Technical Field

[0001] The invention relates to the technical field of eccentricity measurement, and in particular to an eccentric hole position correction device and correction method. Background Art

[0002] In mechanical assembly, a hole on a workpiece (hole to be measured) is eccentric to a hole on another workpiece (reference hole), and there are certain requirements for the eccentricity and orientation. At this time, it is necessary to detect and calibrate the position of the hole, usually using the reference hole as a positioning and detecting the eccentricity. The existing eccentricity detection device is generally only applicable to situations where the diameter of the reference hole changes slightly. Summary of the invention

[0003] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide an eccentric hole position correction device and correction method for solving the technical problem that when the diameter of the reference hole in the prior art eccentricity detection device changes greatly, it will cause positioning difficulties.

[0004] In order to achieve the above-mentioned object and other related objects, the present invention provides an eccentric hole position correction device, which comprises:

[0005] A positioning flange having an eccentric hole eccentric to the center of the positioning flange, wherein the eccentricity of the eccentric hole is consistent with that of the workpiece to be measured;

[0006] A self-centering component, arranged at the center of the positioning flange;

[0007] A rotating rod, one end of which is rotatably mounted in the eccentric hole;

[0008] A measuring piece is fixedly connected to an end of the rotating rod away from the positioning flange, and the eccentricity of the eccentric hole is consistent with that of the workpiece to be measured.

[0009] In one embodiment, the eccentric hole position correction device further includes a measuring piece connecting piece, and the measuring piece is connected and fixed to an end of the rotating rod away from the positioning flange through the measuring piece connecting piece.

[0010] In one embodiment, the eccentric hole position correction device further includes a display device, and the display device is connected to the measuring member.

[0011] In one embodiment, the measuring element includes a displacement sensor, a dial indicator or a micrometer.

[0012] In one embodiment, the eccentric hole position correction device further comprises a handle, and the handle is mounted and fixed to an end of the rotating rod away from the measuring member.

[0013] In one embodiment, the eccentric hole position correction device further includes a bearing assembly, and one end of the rotating rod is mounted and fixed in the eccentric hole through the bearing assembly.

[0014] In one embodiment, the bearing assembly includes a bearing and a bearing seat.

[0015] In one embodiment, the bearing comprises a pair of angular contact ball bearings.

[0016] In one embodiment, a handle is provided on a surface of the positioning flange on a side away from the measuring member.

[0017] In one embodiment, the positioning flange includes a main body and an annular boss portion protruding from a middle portion of the main body toward one end of the measuring member.

[0018] In one embodiment, the body of the positioning flange has a hollow structure.

[0019] In one embodiment, the main body of the positioning flange is provided with a plurality of fixing holes along the circumferential direction.

[0020] In one embodiment, the annular side wall of the boss portion is provided with a plurality of through light holes distributed along the radial direction of the positioning flange, and the center of the body is provided with a central screw hole;

[0021] The self-centering assembly comprises:

[0022] A plurality of top rods are slidably sleeved in the through light hole, and one end of the top rod can extend out of the outer edge of the through light hole;

[0023] A compression spring assembly is sleeved on one end of the push rod close to the center of the positioning flange, one end of the compression spring assembly abuts against the inner edge of the light hole, and the other end abuts against one end of the push rod close to the center of the positioning flange;

[0024] A conical head screw, the screw portion of which is threadedly connected to the central screw hole, and the conical head of which is against an end of the push rod close to the center of the positioning flange.

[0025] In one embodiment, one end of the push rod close to the center of the positioning flange is conical, and the semi-cone angle of the cone is complementary to the semi-cone angle of the conical head of the conical head screw.

[0026] In one embodiment, one end of the push rod extending out from the outer edge of the through light hole is processed into a spherical shape.

[0027] In one embodiment, a plurality of through light holes are evenly arranged on the annular side wall of the boss portion and are distributed along the radial direction of the positioning flange.

[0028] In one embodiment, the tail of the conical head screw is processed into a polygonal shape.

[0029] In one embodiment, the compression spring assembly includes a compression spring and a shaft retaining ring, and the shaft retaining ring is placed near one end of the push rod close to the center of the positioning flange.

[0030] In order to achieve the above-mentioned object and other related objects, the present invention also provides a method for correcting the position of an eccentric hole, the method comprising:

[0031] Provide the above-mentioned eccentric hole position correction device, including a positioning flange, a self-centering component, a rotating rod and a measuring piece;

[0032] Using the self-centering assembly to position the positioning flange at the end edge of the reference hole;

[0033] Debugging the measuring piece so that the head of the measuring piece points to the inner circle of the hole to be measured;

[0034] The rotating rod is rotated to measure the eccentricity between the hole to be measured and the reference hole through the measuring member.

[0035] The present invention provides a novel eccentric hole position correction device capable of detecting and correcting the positions of a hole to be measured and a reference hole, and the device can achieve positioning when the diameter of the reference hole changes greatly;

[0036] The eccentric hole position correction device of the present invention can be adapted to the situation when the hole to be measured is located inside the workpiece, can be operated externally, and can display the measurement result of the measuring piece through a display device arranged externally. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 Schematic diagram showing the structure of two workpieces with eccentric holes.

[0038] Figure 2 Shown is a top view of the eccentric hole position correction device of the present invention.

[0039] Figure 3 Display as Figure 2 Cross-sectional view along AA.

[0040] Figure 4 Display as Figure 3 Magnified image of the area indicated in F.

[0041] Figure 5 Shown is a schematic structural diagram of the positioning flange of the present invention.

[0042] Figure 6 Display as Figure 5 Cross-sectional view of the horizontal centerline position. DETAILED DESCRIPTION

[0043] The following describes the embodiments of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0044] See also Figure 1-6 It should be noted that the illustrations provided in this embodiment are only used to illustrate the basic concept of the present invention in a schematic manner, and the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0045] See also Figure 1 In mechanical assembly, a hole (hole to be measured 21) on a workpiece 2 is eccentric relative to a hole (reference hole 11) on another workpiece 1, and there are certain requirements for the eccentricity and orientation. At this time, it is necessary to detect and correct the position of the hole. For this purpose, the present invention provides a new eccentric hole position correction device.

[0046] Figure 2 A top view of the eccentric hole position correction device of the present invention is shown, Figure 3 Shown along Figure 2 For a cross-sectional view of the AA position in Figure 2 and Figure 3 The eccentric hole position correction device includes: To achieve the above-mentioned purpose and other related purposes, the present invention provides an eccentric hole position correction device, which includes: a positioning flange 100, an eccentric hole 106 (see Figure 5 ), the eccentricity of the eccentric hole 106 is consistent with the eccentricity of the workpiece to be measured (that is, consistent with the standard eccentricity of the hole to be measured 21 and the reference hole 11 mentioned above); a self-centering component, which is arranged at the center position of the positioning flange 100; a rotating rod 900, one end of which is rotatably installed in the eccentric hole 106; a measuring piece 203, which is fixedly connected to one end 901 of the rotating rod 900 away from the positioning flange 100. The eccentric hole position correction device of this embodiment can achieve positioning when the diameter of the reference hole changes greatly.

[0047] See also Figure 2-6In this embodiment, the positioning flange 100 includes a disc-shaped body 102 and an annular boss portion 101 protruding from the middle of the body toward 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 be inserted into the reference hole 11 and then positioned using the self-centering assembly. Figure 2-6 , a plurality of through light holes 104 distributed radially along the positioning flange 100 are arranged on the annular side wall of the boss portion 101, and the through light holes 104 are used to install the ejector rod 300 of the self-centering component to be introduced later, and the diameter of the through light hole 104 is slightly larger than the diameter of the ejector rod 300, which is convenient for the insertion of the ejector rod 300 and can also play a role in stabilizing the ejector rod 300; a central screw hole 105 is arranged at the center of the body 102 for the threaded portion 401 of the conical head screw 400 of the self-centering component to be introduced later to pass through; the body of the positioning flange 100 is circumferentially provided with a plurality of fixing holes 108 corresponding to the screw holes (not shown) on the circumferential side of the end of the reference hole 11 on the workpiece 1, which are used to fix the body 102 of the positioning flange 100 to the workpiece 1 by bolts or the like after the boss portion 101 of the positioning flange 100 extends into the reference hole 11 and the positioning is completed. As an example, in order to ensure uniform force and more accurate positioning, a number of through light holes 104 distributed radially along the positioning flange 100 are evenly arranged on the annular side wall of the boss portion 101; in a specific example, the number of the through light holes 104 can be, for example, 3, and the angle between two adjacent through light holes 104 is 120°.

[0048] See also Figure 2-6 In order to appropriately reduce the weight of the entire device, the present invention has made two improvements. The first aspect is that the boss portion 101 of the positioning flange 100 is set to an annular structure, and only extends inward at the corresponding position where the through light hole 104 is set to form a plurality of extensions (not marked), which not only reduces the weight of the entire device, but also stabilizes the push rod 300 of the self-centering component to be introduced later by increasing the length of the through light hole 104; the second aspect is that the main body 102 inside the annular boss portion 101 is hollowed out to form a hollow structure 107, except for the central area reserved in the middle of the main body 102 for setting the above-mentioned central screw hole 105 and the eccentric hole 106 and the extension area of ​​the annular boss portion 101, and the hollow structure 107 can also be used as an observation or operation hole.

[0049] See also Figure 3In this embodiment, the eccentric hole position correction device also includes a measuring piece connecting piece 201, and the measuring piece 203 is connected and fixed to the end 901 of the rotating rod 900 away from the positioning flange 100 through the measuring piece connecting piece 201. The measuring piece connecting piece 201 can be, for example, a clamping piece, which is clamped and fixed to the end of the rotating rod 900 away from the positioning flange 100, and the vertical distance between the measuring piece 203 and the positioning flange 100 can be adjusted through the measuring piece connecting piece 201 to adapt to situations with different reference hole depths. That is, the measuring piece 203 can change the height of the measuring piece 203 through the measuring piece connecting piece 201.

[0050] It should be noted that, in this embodiment, the measuring member 203 uses a displacement sensor, but it is understandable that, in other embodiments, the measuring member 203 may also use a dial gauge or a micrometer. It should be noted that, in order to ensure the accuracy of the measurement, the measuring end of the measuring member 203 should be perpendicular to the axis of the hole 2 to be measured, or in other words, the measuring end of the measuring member 203 should be perpendicular to the rotating rod 900.

[0051] like Figure 3 As shown, when the hole to be measured is located inside the workpiece, since the measuring piece 203 also extends into the hole to be measured, it is not convenient to observe the data. Therefore, an external display device 202 can be provided, and the display device 202 can be connected to the output end of the measuring piece 203 by wire or wireless means to display the measurement result of the measuring piece 203.

[0052] See also Figure 2 and Figure 3 In order to facilitate external operation, the eccentric hole position correction device also includes a handle 903, which is installed and fixed on the end of the rotating rod 900 away from the measuring piece 203. The rotating rod 900 can be externally manipulated to rotate through the handle 903, thereby driving the measuring piece 203 thereon to rotate and realize the measurement of the eccentricity.

[0053] See also Figure 2 and Figure 3In this embodiment, the eccentric hole position correction 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 necessary to ensure that the rotating rod 900 is perpendicular to the body 102 of the positioning flange 100. Specifically, the bearing assembly includes a bearing seat 700 and a bearing 800. The bearing seat 700 is positioned and installed with the eccentric hole 106 on the positioning flange 100 through its own outer cylindrical surface or outer conical surface. The bearing seat 700 is provided with a bearing hole for installing the bearing 800, and the bearing hole is concentric with the outer cylindrical surface or outer conical surface of the bearing seat 700; the end 902 of the rotating rod 900 away from the measuring member 203 is installed and supported in the bearing hole of the bearing seat 700 through the bearing 800. As an example, the bearing 800 can be, for example, a pair of angular contact ball bearings 800. In other examples, other forms of bearings 800 can also be used as long as the accuracy requirements can be guaranteed.

[0054] See also Figure 2 and Figure 3 In order to facilitate the taking of the eccentric hole position correction device, a handle 103 is provided on a side surface of the positioning flange 100 away from the measuring member 203. As an example, the handle 103 may be a pair of handles 103, symmetrically provided on a side surface of the body 102 of the positioning flange 100 away from the measuring member 203. As an example, a rubber sleeve (not shown) may be provided on the handle 103 for easy holding.

[0055] See also Figure 2-4 In the present embodiment, the self-centering component comprises: a plurality of push rods 300, which are slidably mounted in the through light hole 104, and one end of the push rod 300 can extend out of the outer edge of the through light hole 104; a compression spring component, which is sleeved on one end of the push rod 300 close to the center of the positioning flange 100, one end of the compression spring component abuts against the inner edge of the light hole, and the other end abuts against one end of the push rod 300 close to the center of the positioning flange 100; a conical head screw 400, the screw portion of the conical head screw 400 is threadedly connected to the central screw hole 105, and the conical head 402 of the conical head screw 400 abuts against one end of the push rod 300 close to the center of the positioning flange 100.

[0056] See also Figure 2-4In this embodiment, the push rod 300 can be, for example, a cylinder, and one end (inner end) of the push rod 300 near the center of the positioning flange 100 is conical, and the semi-cone angle of the cone is complementary to the semi-cone angle of the conical head 402 of the conical head screw 400, and the other end (outer end) of the push rod 300 is processed into a spherical shape or other shapes that are compatible with the hole wall of the reference hole 11, so that it can be more fully in contact with the reference hole 11 to achieve centering and fixation. It should be noted that in other embodiments, self-centering components of other structures can also be used to achieve the self-centering function.

[0057] See also Figure 2-4 The tail portion 403 of the conical head screw 400 is processed into a polygon (for example, a square, a pentagon, a hexagon, etc.) to facilitate rotation with a wrench, thereby changing the height position of the conical head 402 of the conical head screw 400, so that the conical head 402 interacts with the cone shape of the inner end of the push rod 300, thereby pushing the outer end of the push rod 300 to extend out of the outer end edge of the through light hole 104 to abut against the side wall of the reference hole 11, thereby realizing a self-centering function, or under the action of the above-mentioned compression spring assembly, the outer end of the push rod 300 retreats into the through light hole 104 to disengage from the side wall of the reference hole, making it easy to take out the eccentric hole position correction device.

[0058] See also Figure 2-4 In this embodiment, the compression spring assembly includes a compression spring 600 and a shaft retaining ring 500 , and the shaft retaining ring 500 is sleeved near one end of the push rod 300 close to the center of the positioning flange 100 .

[0059] The method of using the eccentric hole position correction device of this embodiment is as follows:

[0060] Step 1: insert the boss portion 101 of the positioning flange 100 into the reference hole, so that the flange end of the positioning flange 100 contacts the end surface of the reference hole;

[0061] Step 2: Adjust the position of the measuring member 203 so that the head (or measuring end) of the measuring member 203 points to the inner circle of the hole to be measured;

[0062] Step 3, rotating the conical head screw 400 to cause axial displacement of the conical head screw 400, and the conical head portion thereof drives the plurality of the push rods 300 to synchronously move along the radial direction of the flange through the conical surface of the push rod 300 to abut against the side wall of the reference hole, thereby achieving self-positioning;

[0063] Step 4: fine-tune the positioning flange 100, and fix the positioning flange 100 and the workpiece 1 by means of bolts or the like, or directly rely on the tightening force of the ejector rod 300 to achieve fixation;

[0064] Step five, rotate the handle 903, and display the observation readings through the display device 202, specifically, observe the maximum value a and the minimum value b of the readings, the deviation between the actual eccentricity and the theoretical value = (ab) / 2, and the direction of the deviation can be known from the a value and the b value.

[0065] In summary, the present invention provides a novel eccentric hole position correction device capable of detecting and correcting the positions of a hole to be measured and a reference hole, and the device can achieve positioning when the diameter of the reference hole changes greatly; the eccentric hole position correction device of the present invention can adapt to the situation when the hole to be measured is located inside the workpiece, can be operated externally, and the measurement results of the measuring part 203 can be displayed through a display device 202 arranged externally.

[0066] In the description herein, many specific details, such as examples of components and / or methods, are provided to provide a complete understanding of embodiments of the present invention. However, those skilled in the art will recognize that embodiments of the present invention may be practiced without one or more of the specific details or with other devices, systems, components, methods, components, materials, parts, etc. In other cases, well-known structures, materials, or operations are not specifically shown or described in detail to avoid obscuring aspects of embodiments of the present invention.

[0067] References throughout the specification to "one embodiment," "an embodiment," or "a specific embodiment" mean that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the invention, and not necessarily in all embodiments. Thus, various appearances of the phrases "in one embodiment," "in an embodiment," or "in a specific embodiment" in different places throughout the specification do not necessarily refer to the same embodiment. In addition, the particular features, structures, or characteristics of any specific embodiment of the invention may be combined with one or more other embodiments in any suitable manner. It should be understood that other variations and modifications of the embodiments of the invention described and illustrated herein may be possible in light of the teachings herein and are to be considered part of the spirit and scope of the invention.

[0068] It should also be understood that one or more of the elements shown in the figures may also be implemented in a more separate or more integrated manner, or even removed because they are inoperable in certain circumstances or provided because they may be useful depending on the application.

[0069] In addition, unless otherwise explicitly indicated, any marking arrows in the drawings should be regarded as exemplary only and not limiting. In addition, unless otherwise indicated, the term "or" used herein is generally intended to mean "and / or". In the case where the term is not clear because it is anticipated that the ability to separate or combine is provided, the combination of components or steps will also be regarded as indicated.

[0070] As used in the description herein and throughout the claims that follow, “a,” “an,” and “the” include plural references unless otherwise indicated. Likewise, as used in the description herein and throughout the claims that follow, the meaning of “in” includes “in” and “on,” unless otherwise indicated.

[0071] The above description of the illustrated embodiments of the present invention (including the contents described in the Abstract) is not intended to be an exhaustive list or to limit the present invention to the precise form disclosed herein. Although specific embodiments of the present invention and examples of the present invention are described herein for illustrative purposes only, various equivalent modifications are possible within the spirit and scope of the present invention as will be recognized and appreciated by those skilled in the art. As noted, these modifications may be made to the present invention in accordance with the above description of the embodiments described in the present invention, and these modifications will be within the spirit and scope of the present invention.

[0072] Systems and methods have been generally described herein as details that aid in understanding the present invention. In addition, various specific details have been given to provide an overall understanding of embodiments of the present invention. However, those skilled in the relevant art will recognize that embodiments of the present invention may be practiced without one or more of the specific details, or may be practiced using other devices, systems, accessories, methods, components, materials, parts, etc. In other cases, well-known structures, materials, and / or operations are not specifically shown or described in detail to avoid confusion with various aspects of embodiments of the present invention.

[0073] Thus, although the invention has been described herein with reference to specific embodiments thereof, freedom of modification, various changes and substitutions are intended within the foregoing disclosure, and it should be understood that in some cases, some features of the invention will be employed without the corresponding use of other features without departing from the scope and spirit of the proposed invention. Thus, many modifications may be made to adapt a particular environment or material to the essential scope and spirit of the invention. The invention is not intended to be limited to the specific terms used in the claims below and / or the specific embodiments disclosed as the best mode contemplated for carrying out the invention, but the invention will include any and all embodiments and equivalents falling within the scope of the appended claims. Thus, the scope of the invention will be determined solely by the appended claims.

Claims

1. An eccentric hole position correction device, characterized in that: The device includes: A positioning flange having an eccentric hole eccentric to the center of the positioning flange, wherein the eccentricity of the eccentric hole is consistent with that of the workpiece to be measured; A self-centering component, arranged at the center of the positioning flange; A rotating rod, one end of which is rotatably mounted in the eccentric hole; A measuring member, the measuring member being fixedly connected to an end of the rotating rod away from the positioning flange; The positioning flange includes a body and an annular boss portion protruding from the middle of the body toward one end of the measuring member; The annular side wall of the boss portion is provided with a plurality of through light holes distributed along the radial direction of the positioning flange, and the center of the body is provided with a central screw hole; The self-centering assembly comprises: A plurality of top rods are slidably sleeved in the through light hole, and one end of the top rod can extend out of the outer edge of the through light hole; A compression spring assembly is sleeved on one end of the push rod close to the center of the positioning flange, one end of the compression spring assembly abuts against the inner edge of the light hole, and the other end abuts against one end of the push rod close to the center of the positioning flange; A conical head screw, the screw portion of which is threadedly connected to the central screw hole, and the conical head of which is against an end of the push rod close to the center of the positioning flange.

2. The eccentric hole position correction device according to claim 1, characterized in that: The eccentric hole position correction device also includes a measuring piece connecting piece, and the measuring piece is connected and fixed to an 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, characterized in that: The eccentric hole position correction device also includes a display device, and the display device is connected to the measuring member.

4. The eccentric hole position correction device according to claim 1, characterized in that: The measuring part includes a displacement sensor, a dial indicator or a micrometer.

5. The eccentric hole position correction device according to claim 1, characterized in that: The eccentric hole position correction device also includes a handle, which is fixedly mounted on an end of the rotating rod away from the measuring member.

6. The eccentric hole position correction device according to claim 1, characterized in that: The eccentric hole position correction device also includes a bearing assembly, and one end of the rotating rod is installed and fixed in the eccentric hole through the bearing assembly.

7. The eccentric hole position correction device according to claim 1, characterized in that: A handle is provided on a surface of the positioning flange on one side away from the measuring member.

8. The eccentric hole position correction device according to any one of claims 1 to 7, characterized in that: One end of the push rod close to the center of the positioning flange is conical, and the semi-cone angle of the cone is complementary to the semi-cone angle of the conical head of the conical head screw.

9. The eccentric hole position correction device according to any one of claims 1 to 7, characterized in that: The tail of the conical screw is processed into a polygon.

10. The eccentric hole position correction device according to any one of claims 1 to 7, characterized in that: The compression spring assembly comprises a compression spring and a shaft retaining ring, and the shaft retaining ring is sleeved near one end of the push rod close to the center of the positioning flange.

11. A method for correcting the position of an eccentric hole, characterized in that: The method comprises: Provided is an eccentric hole position correction device as claimed in claim 1, comprising a positioning flange, a self-centering component, a rotating rod and a measuring member; Using the self-centering assembly to position the positioning flange at the end edge of the reference hole; Debugging the measuring piece so that the head of the measuring piece points to the inner circle of the hole to be measured; The rotating rod is rotated to measure the eccentricity between the hole to be measured and the reference hole through the measuring member.

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