CN219347630U - Gauge for detecting coaxiality and end surface parallelism of large-aperture serial holes - Google Patents
Gauge for detecting coaxiality and end surface parallelism of large-aperture serial holes Download PDFInfo
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- CN219347630U CN219347630U CN202320764914.XU CN202320764914U CN219347630U CN 219347630 U CN219347630 U CN 219347630U CN 202320764914 U CN202320764914 U CN 202320764914U CN 219347630 U CN219347630 U CN 219347630U
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- 238000001514 detection method Methods 0.000 abstract description 34
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The utility model relates to the technical field of coaxiality and parallelism detection, and particularly discloses a detection tool for detecting coaxiality and end surface parallelism of a large-aperture serial hole. The scheme is used for solving the problems that the detection difficulty is high and the detection cost cannot be considered when coaxiality of the workpiece with the large aperture and the serial hole in the middle is detected at present.
Description
Technical Field
The utility model relates to the technical field of coaxiality and parallelism detection, in particular to a detection tool for detecting coaxiality and end surface parallelism of a large-aperture serial hole.
Background
At present, under the condition that a workpiece is small or the aperture of a detected workpiece is small, the detected workpiece is arranged on a rotatable object in a coaxiality detection and parallelism detection mode, after the center and the rotation center of the workpiece are guaranteed, the workpiece is rotated, in the rotation process, the reading of a dial indicator contacted with the workpiece is jumped, the coaxiality condition is obtained according to the value of the jumpiness, but the problems of large rotation difficulty and inaccurate detection exist in the conventional mode for detecting the conditions of large aperture and serial holes in the middle part of the large aperture. For example, for a box-type workpiece containing a serial hole, the structural cross section of the workpiece is shown in the attached figure 1, and the cross section comprises end holes on the upper end face and the lower end face of the workpiece and the serial hole positioned in the workpiece, wherein the minimum aperture of the workpiece is about 450mm in diameter, the aperture of the workpiece is large, the wall thickness is large, the workpiece is large in size and weight, the workpiece is difficult to rotate, and the problem of inaccurate measurement coaxiality exists due to the large alignment difficulty of the center of the workpiece.
For the workpieces, three-coordinate detection can be adopted, is a precise measurement method for detecting the workpieces, and is widely applied to modern industries such as machinery manufacturing industry, automobile industry and the like. Its advantages are accurate result, wide application range and high detection accuracy. However, the method has the defects of extremely large investment, professional training required by operators, strict use environment requirements, and high maintenance cost, and the due supporting guarantee facilities must be ensured.
Disclosure of Invention
The utility model aims to provide a detection tool for detecting coaxiality and end surface parallelism of a large-aperture serial hole, so as to solve the problems that the detection difficulty is high and the detection cost cannot be simultaneously achieved when coaxiality of a workpiece with a large aperture and serial holes in the middle is detected at present.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a large aperture cluster hole axiality and terminal surface parallelism detect with examining utensil, includes the supporting seat, and the supporting seat bottom is equipped with two reference columns and two at least support columns, and the height of reference column is higher than the support column, installs the mounting bracket on the supporting seat, and the percentage table is installed to the one end that the supporting seat was kept away from to the mounting bracket, and two reference columns are about mounting bracket symmetric distribution.
The principle and the advantages of the scheme are as follows: when the device is actually applied, when coaxiality of a workpiece with a serial hole is required to be detected, two positioning columns of the supporting seat are simultaneously clung to the hole wall of the end hole of the workpiece, a probe of the dial indicator is clung to the hole wall of the serial hole, a detector pulls the supporting seat by hand to move, the positioning columns of the supporting seat are enabled to be tightly buckled on the inner wall of the end hole of the workpiece and simultaneously rotate along the end hole, the rotating number of turns can be 2, 3 turns are counted, the maximum value of jumping of each turn of dial indicator is obtained, and then the average value is calculated, so that the measured coaxiality of the end hole and the serial hole is obtained. Then changing the action position of the dial indicator probe to enable the dial indicator probe to act on the end face of the serial hole, driving the positioning column of the supporting seat to rotate for more than one circle by the same inspector to be attached to the inner wall of the end hole, recording the maximum jumping value of the dial indicator in each circle, and taking the average value of the maximum jumping values of all circles to obtain the parallelism condition of the end face of the end hole and the end face of the serial hole.
Compared with the prior art, the scheme does not need to adopt three-coordinate detection, reduces the cost of test equipment and the maintenance cost of the test equipment, and compared with the conventional detection method which needs to align the center of the workpiece to be tested and drive the workpiece to rotate, the scheme does not need to align the center of the workpiece and rotate the workpiece with large size, only needs to hold a supporting seat by a detector, drives the supporting seat to rotate around the center of the end hole by being adhered to the wall of the end hole, can realize the coaxiality and parallelism test of the end hole and the serial hole, has simple test mode and low test cost, and greatly ensures the accuracy of detection because the problem that the center of the workpiece cannot be aligned does not exist.
Preferably, as a modification, the number of the support columns is three, and the connecting lines of the three support columns form a triangle.
Preferably, as a modification, one of the three support columns is equidistant from the two positioning columns, and the remaining two support columns are symmetrically disposed about the support column.
Preferably, as an improvement, the surface of the positioning column is provided with a quenching layer.
Preferably, as an improvement, the end faces of the supporting seats far away from the positioning columns and the supporting columns are provided with handles.
Preferably, as an improvement, the mounting frame comprises a first connecting rod, a second connecting rod and clamping assemblies, wherein the first connecting rod is fixedly arranged on the supporting seat, the number of the clamping assemblies is two, one clamping assembly is used for realizing connection between the second connecting rod and the first connecting rod, and the other clamping assembly is used for connecting the second connecting rod and the dial indicator.
Preferably, as an improvement, the clamping assembly comprises a containing seat, a locking piece, a U-shaped clamping plate and a sleeve, wherein a stud is arranged on the containing seat, and the locking piece is connected with the stud in a threaded manner; a section of the accommodating seat far away from the stud is provided with a through hole perpendicular to the axial direction of the stud; two clamping pieces of the U-shaped clamping plate slide between the through hole and the stud, a clamping opening is formed between the two clamping pieces of the U-shaped clamping plate, and the clamping opening is positioned at the outer side of the accommodating seat; the sleeve is sleeved on one section of the holding seat with the through hole, a strip-shaped hole opposite to the through hole is formed in the sleeve, the sleeve can axially move along the holding seat, one of the two connected parts is placed on the clamping opening, and the other part is placed on the through hole.
The beneficial effects are that: according to the scheme, when the locking piece is screwed up, the locking piece abuts against one clamping piece of the U-shaped clamping plate, so that the clamping opening clamps the part, meanwhile, the containing seat drives the part in the through hole to be close to the locking piece, the sleeve is pushed by the U-shaped clamping plate to be away from the locking piece, so that the part in the through hole is abutted against, namely, only one locking piece is required to be screwed up and locked, two connected parts can be clamped, one of the two parts can rotate and lift relative to the clamping opening when the locking is not performed, and the other part can rotate and lift relative to the through hole, so that the included angle between the two connected parts is convenient to adjust.
Preferably, as a modification, the outer surface of the accommodating seat is a cylindrical surface. The surface that this scheme will hold the seat sets up to the face of cylinder for U type splint can rotate round holding the seat before not supported tightly by retaining member and sleeve, has further increased one of them part and has locked the degree of freedom before, has increased the relative position accommodation between two parts that are connected, and the convenience has both realized the arrangement of percentage table in different positions on same mounting bracket, satisfies the axiality and the parallelism detection requirement of the measured work piece of different degree of depth, different apertures, improves the suitability of this utensil of examining.
Drawings
Fig. 1 is a front cross-sectional view of a box-like workpiece according to the present utility model.
Fig. 2 is a schematic front view of a workpiece according to an embodiment of the utility model.
Fig. 3 is a schematic front view of a workpiece in parallelism detection according to an embodiment of the utility model.
Fig. 4 is a bottom view of a first embodiment of the present utility model.
Fig. 5 is a schematic three-dimensional structure of a gauge according to a second embodiment of the utility model.
Fig. 6 is a schematic three-dimensional structure of fig. 5 at another view angle.
Fig. 7 is a schematic three-dimensional structure of a middle clamping assembly according to a second embodiment of the present utility model.
Fig. 8 is an exploded view of the clamping assembly of fig. 7.
Detailed Description
The following is a further detailed description of the embodiments:
reference numerals in the drawings of the specification include: support base 10, reference column 11, support column 12, handle 13, mounting bracket 20, percentage table 30, connecting rod 1, connecting rod 2, clamping assembly 3, holding seat 31, retaining member 32, U-shaped splint 33, sleeve 34, bar hole 341, stud 311, through hole 312, clamping port 331, serial port 100.
Example 1
Referring to fig. 2 and 4, a gauge for detecting coaxiality and end surface parallelism of a large-aperture serial hole comprises a supporting seat 10, wherein two positioning columns 11 and at least two supporting columns 12 are fixed at the bottom of the supporting seat 10, the height of each positioning column 11 is higher than that of each supporting column 12, a mounting frame 20 is mounted on the supporting seat 10, a dial indicator 30 is mounted at one end, far away from the supporting seat 10, of each mounting frame 20, and the two positioning columns 11 are symmetrically distributed with respect to the mounting frame 20.
Specifically, the number of support columns 12 is three, and the connection lines of the three support columns 12 form a triangle. Of the three support columns 12, one support column 12 is equidistant from the two positioning columns 11, and the remaining two support columns 12 are symmetrically disposed with respect to the support column 12.
The surface of the positioning column 11 is provided with a quenching layer to improve the hardness and wear resistance of the positioning column 11.
In addition, a handle 13 is installed on the end surface of the support base 10 away from the positioning column 11 and the support column 12.
The method for detecting coaxiality and parallelism of the box-type workpiece containing the serial holes 100 in fig. 1 comprises the following steps:
1. coaxiality detection
Let two reference columns 11 of supporting seat 10 hug closely simultaneously on the pore wall of work piece end hole, support column 12 is placed on the terminal surface of upper end hole, let the probe of percentage table 30 paste on the pore wall of cluster hole 100, the pull handle 13 of supporting seat 10 is pulled by the hand to the inspector for the reference column 11 of supporting seat 10 is rotatory along the end hole when tightly detaining work piece end hole inner wall, and rotatory round number can be 2 circles or 3 circles, gets the maximum value that each circle percentage table 30 beats, then takes the mean value of the biggest value of all circles, is the condition of the axiality of end hole and cluster hole 100 that is measured.
2. Parallelism detection
Let two reference columns 11 of supporting seat 10 hug closely simultaneously on the pore wall in work piece end hole, support column 12 is placed on the terminal surface in upper end hole, let the probe of percentage table 30 paste on the up end in cluster hole 100, the pull handle 13 of supporting seat 10 is pulled by the hand to the inspector for the reference column 11 of supporting seat 10 is rotatory along the end hole when tightly detaining work piece end hole inner wall, and rotatory round number can be 2 circles or 3 circles, gets the maximum value that each circle percentage table 30 beats, then takes the average value of the biggest value of all circles, is the parallelism condition of the part outer terminal surface of measuring and cluster hole 100 terminal surface.
After the coaxiality and parallelism of one of the end holes and the serial hole 100 are detected, the box-type workpiece is turned in direction so that the lower end face faces upwards, and coaxiality and parallelism are detected according to the same method.
When coaxiality detection is performed on workpieces with middle serial holes 100 in boxes, coaxiality detection and parallelism detection are required for the upper end face and the lower end face and the serial holes 100, the middle serial holes 100 are used as references, namely the hole wall of the middle serial holes 100 is used as a reference during coaxiality detection, and the two end faces of the serial holes 100 are used as reference surfaces during parallelism detection. In order to ensure the reliability of parallelism detection, before coaxiality and parallelism detection are performed, a micrometer is adopted to detect the dimension tolerance and the form tolerance of the hole wall and the two end faces of the serial hole 100, and coaxiality and parallelism detection is performed only after the dimension tolerance and the form tolerance of the serial hole 100 are qualified.
In this embodiment, the middle serial hole 100 is used as a reference, so that the situation that the measurement accuracy is affected due to the floating of the cantilever end dial indicator 30 caused by the overlong mounting frame 20 can be avoided.
Compared with the prior art, the method has the advantages that three-coordinate detection is not needed, the cost of testing equipment and the maintenance cost of the testing equipment are reduced, compared with the conventional detection method which needs to align the center of a workpiece to be tested and drive the workpiece to rotate, the method does not need to align the center of the workpiece and rotate the workpiece with large size, only the supporting seat 10 is needed to be held by a detector, the supporting seat 10 is driven to rotate around the center of the end hole by being attached to the wall of the end hole, the coaxiality and parallelism test of the end hole and the serial hole 100 can be realized, the testing mode is simple, the testing cost is low, and the accuracy of the detection is greatly ensured because the problem that the center of the workpiece cannot be aligned does not exist.
Example two
With reference to fig. 5 to 8, the second embodiment is a further improvement of the mounting frame 20 based on the first embodiment, and the improvement of the mounting frame 20 is as follows:
the mounting frame 20 comprises a first connecting rod 1, a second connecting rod 2 and clamping assemblies 3, wherein the first connecting rod 1 is fixedly arranged on the supporting seat 10, the number of the clamping assemblies 3 is two, one clamping assembly 3 is used for realizing connection between the second connecting rod 2 and the first connecting rod 1, and the other clamping assembly 3 is used for connecting the second connecting rod 2 and the dial indicator 30.
Each clamping assembly 3 comprises a containing seat 31, a locking piece 32, a U-shaped clamping plate 33 and a sleeve 34, wherein a stud 311 is processed on the containing seat 31, and the locking piece 32 is connected with the stud 311 in a threaded manner; a through hole 312 perpendicular to the axial direction of the stud 311 is formed in a section of the accommodating seat 31 away from the stud 311; two clamping pieces of the U-shaped clamping plate 33 slide on a section of the middle part of the accommodating seat 31 between the through hole 312 and the stud 311, a clamping opening 331 is formed between the two clamping pieces of the U-shaped clamping plate 33, and the clamping opening 331 is positioned at the outer side of the accommodating seat 31; the sleeve 34 is sleeved on a section of the containing seat 31 with the through hole 312, a strip-shaped hole 341 opposite to the through hole 312 is formed in the sleeve 34, the outer surface of the containing seat 31, which is matched with the U-shaped clamping plate 33 and the sleeve 34, is a cylindrical surface, the sleeve 34 can axially move along the containing seat 31, and two connected parts are placed on the clamping opening 331, and one part is placed on the through hole 312.
Taking the connection of the first connecting rod 1 and the second connecting rod 2 as an example, the first connecting rod 1 is placed on the clamping opening 331, the second connecting rod 2 is placed on the through hole 312 of the accommodating seat 31, after the relative positions of the first connecting rod 1 and the second connecting rod 2 are adjusted, the locking piece 32 is screwed so that the locking piece 32 abuts against one clamping piece of the U-shaped clamping plate 33, the other clamping piece of the U-shaped clamping plate 33 abuts against the sleeve 34, the sleeve 34 abuts against the second connecting rod 2, and in the process, the U-shaped clamping plate 33 is extruded to enable the clamping opening 331 to clamp the first connecting rod 1; meanwhile, the accommodating seat 31 drives the second connecting rod 2 in the through hole 312 to be close to the locking piece 32, and the sleeve 34 is pushed by the U-shaped clamping plate 33 to be far away from the locking piece 32, so that the second connecting rod 2 is pressed by the abutting sleeve 34 and the through hole 312 of the accommodating seat 31, namely, only one screwing and locking action of the locking piece 32 is needed, and the connected first connecting rod 1 and the second connecting rod 2 can be clamped, so that the operation is very simple.
And when retaining member 32 does not lock, one of them can rotate and go up and down relative centre gripping mouth 331 in two parts that are pressed from both sides, and one can rotate and go up and down relative through-hole 312, holds seat 31 simultaneously and can also rotate around U type splint 33 for the contained angle between two parts that are connected is adjusted conveniently, guarantees to install on the position that the axiality of parallelism detection box detected that dial indicator 30 on clamping assembly 3 can be adjusted, can also ensure to adopt same mounting bracket 20 to realize the axiality and the parallelism detection requirement of the measured work piece of different degree of depth, different apertures, improves the suitability of this gauge.
The foregoing is merely exemplary of the present utility model, and specific technical solutions and/or features that are well known in the art have not been described in detail herein. It should be noted that, for those skilled in the art, several variations and modifications can be made without departing from the technical solution of the present utility model, and these should also be regarded as the protection scope of the present utility model, which does not affect the effect of the implementation of the present utility model and the practical applicability of the patent. The protection scope of the present application shall be subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.
Claims (8)
1. The utility model provides a large aperture cluster hole axiality and terminal surface parallelism detect with examining utensil, includes supporting seat, its characterized in that: the supporting seat bottom is equipped with two reference columns and two at least support columns, and the height of reference column is higher than the support column, installs the mounting bracket on the supporting seat, and the percentage table is installed to the one end that the supporting seat was kept away from to the mounting bracket, and two reference columns are about mounting bracket symmetric distribution.
2. The gauge for detecting coaxiality and end-face parallelism of a large-aperture tandem hole according to claim 1, wherein: the number of the support columns is three, and the connecting lines of the three support columns form a triangle.
3. The gauge for detecting coaxiality and end-face parallelism of a large-aperture tandem hole according to claim 2, wherein: among the three support columns, one support column is equal to the distance between the two positioning columns, and the remaining two support columns are symmetrically arranged relative to the support column.
4. The gauge for detecting coaxiality and end-face parallelism of a large-aperture tandem hole according to claim 1, wherein: and a quenching layer is arranged on the surface of the positioning column.
5. The gauge for detecting coaxiality and end-face parallelism of a large-aperture tandem hole according to claim 1, wherein: and the end surfaces of the supporting seats far away from the positioning columns and the supporting columns are provided with handles.
6. The gauge for detecting coaxiality and end-face parallelism of a large-aperture tandem hole according to claim 1, wherein: the mounting frame comprises a first connecting rod, a second connecting rod and clamping assemblies, wherein the first connecting rod is fixedly arranged on the supporting seat, the number of the clamping assemblies is two, one clamping assembly is used for realizing connection between the second connecting rod and the first connecting rod, and the other clamping assembly is used for connecting the second connecting rod and the dial indicator.
7. The gauge for detecting coaxiality and end-face parallelism of a large-aperture tandem hole as set forth in claim 6, wherein: the clamping assembly comprises a containing seat, a locking piece, a U-shaped clamping plate and a sleeve, wherein a stud is arranged on the containing seat, and the locking piece is connected with the stud through threads; a section of the accommodating seat far away from the stud is provided with a through hole perpendicular to the axial direction of the stud; two clamping pieces of the U-shaped clamping plate slide between the through hole and the stud, a clamping opening is formed between the two clamping pieces of the U-shaped clamping plate, and the clamping opening is positioned at the outer side of the accommodating seat; the sleeve is sleeved on one section of the holding seat with the through hole, a strip-shaped hole opposite to the through hole is formed in the sleeve, the sleeve can axially move along the holding seat, one of the two connected parts is placed on the clamping opening, and the other part is placed on the through hole.
8. The gauge for detecting coaxiality and end-face parallelism of a large-aperture tandem hole as set forth in claim 7, wherein: the outer surface of the containing seat is a cylindrical surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320764914.XU CN219347630U (en) | 2023-04-07 | 2023-04-07 | Gauge for detecting coaxiality and end surface parallelism of large-aperture serial holes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320764914.XU CN219347630U (en) | 2023-04-07 | 2023-04-07 | Gauge for detecting coaxiality and end surface parallelism of large-aperture serial holes |
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| CN219347630U true CN219347630U (en) | 2023-07-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116379891A (en) * | 2023-04-07 | 2023-07-04 | 重庆机床(集团)有限责任公司 | A detection method for coaxiality and end-face parallelism of large-aperture serial holes |
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2023
- 2023-04-07 CN CN202320764914.XU patent/CN219347630U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116379891A (en) * | 2023-04-07 | 2023-07-04 | 重庆机床(集团)有限责任公司 | A detection method for coaxiality and end-face parallelism of large-aperture serial holes |
| CN116379891B (en) * | 2023-04-07 | 2025-12-02 | 重庆机床(集团)有限责任公司 | A method for detecting the coaxiality and end face parallelism of large-diameter perforated holes |
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