CN111623696B - A examine utensil for turning part plane degree detects - Google Patents
A examine utensil for turning part plane degree detects Download PDFInfo
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- CN111623696B CN111623696B CN201910149453.3A CN201910149453A CN111623696B CN 111623696 B CN111623696 B CN 111623696B CN 201910149453 A CN201910149453 A CN 201910149453A CN 111623696 B CN111623696 B CN 111623696B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/28—Measuring arrangements characterised by the use of mechanical techniques for measuring roughness or irregularity of surfaces
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Abstract
The invention relates to a checking fixture for detecting the flatness of a corner part, which comprises a body, wherein the corner part comprises a detected plane and a side wall surface, the front end of the body is provided with a detecting head, the detecting head is provided with a smooth detecting surface, the detecting surface is abutted against the side wall surface during detection, the bottom surface of the body is provided with a detecting step which is recessed backwards and is low in front and high in back, and the length of the detecting step along the front and back directions of the body is greater than that of the detected plane along the direction. The invention can avoid scratching the surface of the part when the detection head moves along the side wall surface, the arrangement of the detection step can realize the detection of the flatness of the detected plane, the height of the detection step is determined by the flatness requirement and the thickness of the part, during the detection, the detection surface of the detection head moves along the side wall surface, when the detection step has no contact point with the detected plane, the flatness of the detected plane meets the requirement, and when the detection step has a contact point with the detected plane, the flatness of the detected plane exceeds the requirement.
Description
Technical Field
The invention relates to the field of flatness detection, in particular to a detection tool for detecting the flatness of a corner part.
Background
For detecting the flatness of a part with a corner, the following two detection methods are commonly used at present: (1) attaching a measured plane of the sheet metal part to a horizontal platform, and measuring a gap between the sheet metal part and the platform by using a feeler gauge so as to reflect the flatness by the gap; (2) a measured plane of the sheet metal part is attached to the horizontal platform, and the height fluctuation of the upper surface of the sheet metal part is measured by the aid of a dial indicator matched with a cantilever so as to reflect the flatness by means of height variation.
The two detection methods have the following problems: (1) inaccurate detection: the clearance gauge has a width, the gap between the measured metal plate and the plane is arched, and the measured value is smaller than the actual value; (2) the measurement efficiency is low: the feeler gauge and the dial gauge belong to single-point measurement, and have poor measurement operability and low efficiency for longer parts; (3) for common sheet metal bending, the flatness requirements of the bending R angle and the bevel angle are met, and the measurement difficulty is high (the height of the R angle or the height of the uneven angle cannot be distinguished). From the foregoing, it can be seen that there is still a need for an improved inspection tool for inspecting the flatness of corner parts.
Disclosure of Invention
The invention aims to solve the first technical problem of providing a gauge for detecting the flatness of a corner part, which is used for accurately detecting the flatness of the corner part.
The second technical problem to be solved by the invention is to provide a checking fixture for detecting the flatness of the corner part, which is convenient to use and high in detection efficiency aiming at the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows: a detection tool for detecting the flatness of a corner part comprises a body, wherein the corner part comprises a detected plane and a side wall surface, and is characterized in that a detection head is arranged at the front end of the body and provided with a smooth detection surface, the detection surface is in contact with the side wall surface during detection, a detection step which is recessed backwards and is low in front and high in back is arranged on the bottom surface of the body, and the length of the detection step along the front-back direction of the body is greater than that of the detected plane in the front-back direction.
For avoiding the R angle of the part better, a horizontal gap is formed between the detection surface and the lower front end surface of the body, so that the interference of the R angle to the flatness detection can be avoided.
The horizontal gap between the detection surface and the lower front end surface of the body can be realized in various specific ways, and preferably, the detection surface protrudes out of the body or the lower front end surface of the body is recessed backwards.
In order to stabilize the internal structure of the checking fixture, preferably, the detecting head and the body are integrated.
Further, preferably, the body has a block shape, the detection head has a block shape, the thickness of the detection head is smaller than that of the body, and grip grooves into which fingers are inserted are formed on both side surfaces of the body. Through setting up as above make examine utensil simple structure to make things convenient for operating personnel's operation.
In order to improve the detection efficiency, preferably, the detection head is a roller rotatably disposed on the body, the roller rotates around a central axis perpendicular to the plane to be detected, the roller has a smooth wheel surface, and the wheel surface when the roller contacts with the side wall surface is the detection surface. The rolling along the side wall face of gyro wheel can make the utensil of examining move along the measured plane fast like this to realize the short-term test to the plane degree of the measured plane.
In order to further improve the moving stability of the checking fixture along the detected plane, at least two detecting heads are arranged in parallel along the left and right direction of the body.
In order to make the checking fixture simple in integral structure and enable the detection head to smoothly rotate, the body is in a block shape, the front end of the body is provided with a through groove with a forward opening, the detection head is arranged at the opening end of the through groove through an upper rotating shaft and a lower rotating shaft, and a gap is reserved between the detection head and the rear groove wall of the through groove.
The rotation of the detection head in the body can be realized in various specific ways, preferably, most of the detection head is located in the through groove, or at most half of the detection head is located in the through groove, the front edges of the upper groove wall and the lower groove wall of the through groove respectively extend outwards and horizontally to form semicircular protective convex edges with the corresponding rotating shaft as the center of a circle, and the front ends of the protective convex edges are respectively formed with straight sections.
For the operation of operating personnel, be formed with the groove of holding that supplies the finger embedding on the both sides side of the rear end of body respectively.
Compared with the prior art, the invention has the advantages that: the detection tool is provided with the detection head, the detection head is provided with the smooth detection surface, so that the surface of a part can be prevented from being scratched when the detection head moves along the side wall surface, the detection of the flatness of the detected plane can be realized and the detection accuracy is improved through the arrangement of the detection step, the height of the detection step is determined by the flatness requirement and the thickness of the part, during detection, the detection surface of the detection head moves along the side wall surface, when the detection step has no contact point with the detected plane, the flatness of the detected plane meets the requirement, and when the detection step has a contact point with the detected plane, the flatness of the detected plane exceeds the requirement.
Drawings
FIG. 1 is a schematic structural diagram of a gauge in embodiment 1 of the present invention;
FIG. 2 is a schematic view of the structure of FIG. 1 in another direction;
FIG. 3 is a schematic view of the structure of FIG. 1 in still another direction;
FIG. 4 is a schematic view of a use state of the gauge in embodiment 1 of the present invention;
FIG. 5 is a schematic view of the structure of FIG. 4 in another direction;
FIG. 6 is a cross-sectional view taken along A-A of FIG. 5;
FIG. 7 is a schematic structural diagram of a gauge in embodiment 2 of the present invention;
fig. 8 is a schematic structural diagram of a detection tool in embodiment 3 of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
Example 1:
as shown in fig. 1 to 6, the corner part 3 includes a measured plane 31 and a side wall surface 32, in this embodiment, the measured plane 31 and the side wall surface 32 are perpendicular to each other, and it is needless to say that the measured plane 31 and the side wall surface 32 form an acute angle or an obtuse angle within the protection scope of the present application.
The checking tool comprises a body 1 and a detecting head 2 arranged at the front end of the body 1, wherein the detecting head 2 is provided with a smooth detecting surface 21, the detecting surface 21 is contacted with the side wall surface 32 during detection, the bottom surface of the body 1 is provided with a detecting step 14 which is concave backwards, and the length of the detecting step 14 along the front-back direction of the body 1 is larger than that of a detected plane 31 in the direction. It can be seen that the smooth detection surface 21 can avoid scratching the surface of the part 3 when the detection head 2 moves along the side wall surface 32, the arrangement of the detection step 14 can realize the detection of the flatness of the detected plane 31, the height of the detection step 14 is determined by the flatness requirement and the thickness of the part 3, during the detection, the detection surface 21 of the detection head 2 moves along the side wall surface 32, when the detection step 14 has no contact point with the detected plane 31, the flatness of the detected plane 31 meets the requirement, and when the detection step 14 has a contact point with the detected plane 31, the flatness of the detected plane 31 exceeds the requirement.
Further, in the present embodiment, the detection head 2 is a roller rotatably mounted on the main body 1, the roller rotates around a central axis perpendicular to the plane 31 to be detected, and the roller has a smooth wheel surface, and the wheel surface when the roller contacts the side wall surface 32 is the detection surface 21. Therefore, the checking fixture can rapidly move along the measured plane 31 by rolling the roller along the side wall surface 32, and the flatness of the measured plane 31 can be rapidly detected. Specifically, in the present embodiment, the body 1 is in a block shape, the front end of the body 1 has a through slot 12 that is open forward, the detection head 2 is mounted at the open end of the through slot 12 through an upper rotating shaft and a lower rotating shaft (not shown), and a gap is left between the detection head 2 and the rear slot wall of the through slot 12. And, half of the detection head 2 locates in the through groove 12, and the front edge of the upper, lower slot wall of the through groove 12 extends the semicircular protective convex edge 15 outside and taking the corresponding spindle as the centre of a circle horizontally separately, each protective convex edge 15 front end forms the straight section separately, the section of the protective convex edge 15 locating under the detection head 2 is the front end surface 11 of inferior part of the above-mentioned body 1. In order to save the manufacturing cost of the checking fixture, the top surface of the front end of the body 1 is recessed downwards, and in addition, in order to facilitate the operation of an operator, holding grooves 13 for fingers to be embedded are respectively formed on the side surfaces of two sides of the rear end of the body 1.
Still further, in order to better avoid the R angle of the part 3, a horizontal gap D is formed between the detection surface 21 and the lower front end surface 11 of the body 1, so that interference of the R angle on flatness detection can be avoided. In this embodiment, since half of the detection head 2 protrudes from the through groove 12, the horizontal gap D is formed between the detection surface 21 and the lower front end surface 11 of the body 1.
During detection, a part 3 to be detected is placed on the platform 4, the part 3 where the detected plane 31 is located is enabled to be tightly attached to the table top of the platform 4, the detection tool is placed on the part 3, the detection surface 21 of the detection head 2 is enabled to be in contact with the side wall surface 32, the detection step 14 is opposite to the detected plane 31, an operator holds and moves the detection tool, the detection head 2 rolls along the side wall surface 32, when the detection step 14 does not have a contact point with the detected plane 31, the flatness of the detected plane 31 meets requirements, and when the detection step 14 has a contact point with the detected plane 31, the flatness of the detected plane 31 exceeds the requirements. The height H of the detection step 14 is determined according to the flatness requirement and the thickness of the part 3, namely when the flatness requirement is high and the thickness of the part 3 is small, the height H of the detection step 14 is low, and when the flatness requirement is low and the thickness of the part 3 is large, the height H of the detection step 14 is high.
Example 2:
as shown in fig. 7, different from embodiment 1, the two detection heads 2 are arranged in parallel along the left-right direction of the body 1, so that the smoothness of the movement of the detection tool along the measured plane 31 can be further improved. Specifically, the two detection heads 2 are juxtaposed in the through groove 12, and most of each detection head 2 is located in the through groove 12. Further, the lower front end face 11 of the body 1 is recessed rearward so that the above-described horizontal gap D is formed between the detection face 21 and the lower front end face 11 of the body 1.
Example 3:
as shown in fig. 8, unlike embodiment 1, in this embodiment, the detection head 2 and the main body 1 are formed as a single piece, and the detection head 2 is also block-shaped and has a thickness smaller than that of the main body 1. Further, the upper portion of the front end face 11 of the detection head 2 forms the detection surface 21, and the lower portion of the front end face 11 is recessed rearward, so that the horizontal gap D is formed between the detection surface 21 and the front end face 11 of the lower portion of the body 1.
Claims (7)
1. A detection tool for detecting the flatness of a corner part comprises a body (1), wherein the corner part (3) comprises a detected plane (31) and a side wall surface (32), and is characterized in that a detection head (2) is arranged at the front end of the body (1), the detection head (2) is provided with a smooth detection surface (21), the detection surface (21) is in contact with the side wall surface (32) during detection, a detection step (14) which is concave backwards is arranged on the bottom surface of the body (1), the length of the detection step (14) along the front-back direction of the body (1) is larger than that of the detected plane (31) in the direction, the detection head (2) is a roller which is rotatably arranged on the body (1), the roller rotates around a central axis vertical to the detected plane (31), the roller is provided with a smooth wheel surface, and the wheel surface when the roller is in contact with the side wall surface (32) is the detection surface (21), a horizontal gap is arranged between the detection surface (21) and the lower front end surface (11) of the body (1),
the appearance of body (1) is blocky, and the front end of this body (1) has logical groove (12) of opening forward, and above-mentioned detection head (2) are installed at the open end of this logical groove (12) through upper and lower pivot, and should detect and leave the clearance between the back cell wall that head (2) and logical groove (12).
2. The testing fixture according to claim 1, characterized in that the testing surface (21) protrudes out of the body (1) or the lower front end surface (11) of the body (1) is recessed backwards.
3. A tool according to claim 1 or 2, wherein the head (2) is integral with the body (1).
4. The testing fixture according to claim 3, wherein the body (1) is block-shaped, the testing head (2) is also block-shaped and has a thickness smaller than that of the body (1), and grip grooves (13) for fingers to be inserted are formed on both side surfaces of the body (1).
5. The testing fixture according to claim 1, characterized in that the number of the test heads (2) is at least two and is arranged side by side along the left-right direction of the body (1).
6. The testing fixture according to claim 1, wherein most of the testing heads (2) are located in the through groove (12), or at most half of the testing heads (2) are located in the through groove (12), the front edges of the upper and lower groove walls of the through groove (12) respectively extend horizontally and outwards to form semicircular protective convex edges (15) with the corresponding rotating shaft as the center, the front ends of the protective convex edges (15) are respectively formed with straight sections, and the sections on the protective convex edges (15) on the lower side of the testing heads (2) are the front end faces (11).
7. The testing fixture according to claim 1, characterized in that the body (1) is formed with holding grooves (13) for fingers to insert into on both side surfaces of the rear end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910149453.3A CN111623696B (en) | 2019-02-28 | 2019-02-28 | A examine utensil for turning part plane degree detects |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910149453.3A CN111623696B (en) | 2019-02-28 | 2019-02-28 | A examine utensil for turning part plane degree detects |
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| Publication Number | Publication Date |
|---|---|
| CN111623696A CN111623696A (en) | 2020-09-04 |
| CN111623696B true CN111623696B (en) | 2022-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910149453.3A Active CN111623696B (en) | 2019-02-28 | 2019-02-28 | A examine utensil for turning part plane degree detects |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009139311A (en) * | 2007-12-10 | 2009-06-25 | Nippon Steel & Sumikin Metal Products Co Ltd | Flatness gage |
| CN201897458U (en) * | 2010-12-03 | 2011-07-13 | 奇瑞汽车股份有限公司 | Gap flatness measuring auxiliary tool |
| CN202216627U (en) * | 2011-07-14 | 2012-05-09 | 深圳奔迅汽车玻璃有限公司 | Dimension measuring device used for pre-processing of automobile glass |
| CN202452917U (en) * | 2011-12-27 | 2012-09-26 | 济南吉利汽车有限公司 | Checking fixture of automobile sheet metal part |
| CN204228091U (en) * | 2014-10-27 | 2015-03-25 | 宁波梦之星针织机械科技有限公司 | Instrument for Straightness |
| CN104567748A (en) * | 2013-10-14 | 2015-04-29 | 上海金艺检测技术有限公司 | Auxiliary device and measurement method for measuring linearity and planeness of narrow gap |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208059781U (en) * | 2018-04-28 | 2018-11-06 | 安徽江淮汽车集团股份有限公司 | A kind of inner concave testing agency |
| CN109282736A (en) * | 2018-09-12 | 2019-01-29 | 深圳市中创镁工程技术有限公司 | A kind of flatness checking device, system and method |
-
2019
- 2019-02-28 CN CN201910149453.3A patent/CN111623696B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009139311A (en) * | 2007-12-10 | 2009-06-25 | Nippon Steel & Sumikin Metal Products Co Ltd | Flatness gage |
| CN201897458U (en) * | 2010-12-03 | 2011-07-13 | 奇瑞汽车股份有限公司 | Gap flatness measuring auxiliary tool |
| CN202216627U (en) * | 2011-07-14 | 2012-05-09 | 深圳奔迅汽车玻璃有限公司 | Dimension measuring device used for pre-processing of automobile glass |
| CN202452917U (en) * | 2011-12-27 | 2012-09-26 | 济南吉利汽车有限公司 | Checking fixture of automobile sheet metal part |
| CN104567748A (en) * | 2013-10-14 | 2015-04-29 | 上海金艺检测技术有限公司 | Auxiliary device and measurement method for measuring linearity and planeness of narrow gap |
| CN204228091U (en) * | 2014-10-27 | 2015-03-25 | 宁波梦之星针织机械科技有限公司 | Instrument for Straightness |
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| CN111623696A (en) | 2020-09-04 |
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