CN214407418U - Measuring instrument for measuring R angle - Google Patents
Measuring instrument for measuring R angle Download PDFInfo
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- CN214407418U CN214407418U CN202022895025.6U CN202022895025U CN214407418U CN 214407418 U CN214407418 U CN 214407418U CN 202022895025 U CN202022895025 U CN 202022895025U CN 214407418 U CN214407418 U CN 214407418U
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Abstract
The utility model relates to the field of automobile quality inspection tools, in particular to a measuring instrument for measuring an R angle, which comprises a level ruler, a measuring meter which is arranged at the midpoint of the level ruler and is vertical to the level ruler, a first positioning rod which can be arranged at different positions of the level ruler and a second positioning rod which can be arranged at different positions of the level ruler; the probe of the measuring meter penetrates through the level bar and is connected with a measuring rod, and the first positioning rod and the second positioning rod are positioned on two sides of the measuring rod; the first positioning rod and the second positioning rod have the same structure. The R angle is measured through the measuring rods, the operation is simple, the positions of the two positioning rods only need to be adjusted, the radius of the R angle can be calculated by reading two readings, and the R angle measuring efficiency is improved.
Description
Technical Field
The utility model relates to an automobile quality inspection instrument field, more specifically relates to a measuring apparatu for R angle measurement.
Background
In the whole vehicle research and development production process, in order to check the matching degree of a product and a design, the R angle (arc angle) of a mold/fixture, namely the radius of a transition arc at the intersection of two straight lines, is grasped in real time, the appearance of the product is ensured, and measurement and judgment are required to be performed on each R angle of a part and the mold/fixture. Currently, R-angle measurements for automotive outer covers (hood outer panels, tail cover outer panels, roof panels, front and rear door outer panels, etc.) rely primarily on R-gauges and 3D scanning. The R gauge is composed of a series of circular arc pieces with continuous sizes, the R gauges with different sizes are used for fitting the measured R angle when in use, and when the R gauge is completely fitted with the measured R angle, the size of the R gauge is the size of the measured R angle. However, in actual design production, the use of the R gauge has many error problems and the measurement efficiency is low. The 3D scanning device is scanned by a scanner and then imaged in a computer, and then 3D data is measured in software, although the obtained data is accurate, the 3D scanning device is expensive, many companies do not have the 3D scanning device, and the 3D scanning device is not convenient and fast to use in actual mold/fixture debugging.
The chinese patent that publication number is "CN 102818501A", publication date is 2012 and 12 months 12 days discloses an arc radius measuring device, includes main scale and left and right vice chi, and each vice chi all includes horizontal pole and montant that sets firmly together, and the front end tip of main scale is equipped with and is used for the main scale measuring part with the arc surface contact complex that awaits measuring, its characterized in that: the adjacent ends of the cross rods of the two auxiliary rulers are hinged with the front end of the main ruler through a main ruler shaft axially extending along the up-down direction, one end of each cross rod far away from the main ruler is provided with an alignment mechanism, the centering mechanism comprises an auxiliary scale shaft extending along the vertical direction in the axial direction and a dial indicator seat rotationally matched with the corresponding auxiliary scale shaft, a dial indicator with a dial indicator measuring rod is arranged on the dial indicator seat, one end part of the dial indicator measuring rod far away from the corresponding dial indicator is provided with an auxiliary scale measuring part in contact fit with the arc surface to be measured, and a centering chord block is also arranged on the dial indicator seat, the centering string blocks are provided with string block centering parts which are distributed on two radial sides of the corresponding auxiliary ruler shaft and are in contact fit with the corresponding arc surface to be measured, the central line of the measuring rod of the dial indicator vertically bisects the connecting line of the centering parts of the two string blocks, and the central line of each vertical rod respectively vertically bisects the connecting line of the main ruler shaft and the central line of the corresponding auxiliary ruler shaft.
In the technical scheme, the arc radius is measured through a plurality of measuring scales and measuring meters, and the plurality of positions are required to be debugged during measurement, so that the measurement efficiency is low.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an overcome the problem that R angle measurement is inefficient among the above-mentioned prior art, provide a measuring apparatu for R angle measurement, simple structure, convenient operation improves the measurement of efficiency at R angle.
In order to solve the technical problem, the utility model discloses a technical scheme is: a measuring instrument for R angle measurement comprises a level ruler, a measuring meter which is arranged at the midpoint of the level ruler and is vertical to the level ruler, a first positioning rod which can be arranged at different positions of the level ruler, and a second positioning rod which can be arranged at different positions of the level ruler; the probe of the measuring gauge penetrates through the level ruler and is connected with a measuring rod, and the first positioning rod and the second positioning rod are positioned on two sides of the measuring rod; the first positioning rod and the second positioning rod are consistent in structure.
In the technical scheme, when the R angle is measured, the measuring meter is enabled to return to zero, the first locating rod and the second locating rod are respectively located on two sides of the measuring meter, the lower ends of the first locating rod and the second locating rod are flush, and the first locating rod and the second locating rod are basically in a flush state due to the fact that mechanisms of the first locating rod and the second locating rod are identical, and debugging actions are reduced. The positions of the first positioning rod and the second positioning rod are adjusted, the distance between the first positioning rod and the middle point of the level bar is equal to that between the second positioning rod and the middle point of the level bar, the first positioning rod and the second positioning rod are made to respectively contact with the contacts at the edges of two sides of the measured circular arc, the level bar is made to coincide with the circumference of the circular arc, and the measuring rod moves up and down to generate displacement change according to the size of the type (the outward R angle or the inward R angle) of the measured circular arc to reach the contact at the middle position of the circular arc. Because the distance from the first positioning rod and the second positioning rod to the midpoint is known, the radius of the R angle is calculated according to the data of the measuring meter, and the specific radius of the R angle can be obtained.
Preferably, the level bar is provided with scales, the scales are gradually increased towards two sides by taking the middle point of the level bar as a zero scale point, and the distance from the first positioning rod or the second positioning rod to the middle point is more conveniently read.
Preferably, the surfaces of the first positioning rod and the second positioning rod are provided with central axis scratches. The axis scratch can be as a reading benchmark to the position that the axis scratch is located the scale is read, thereby guarantees that the reading is more accurate.
Preferably, the first positioning rod and the second positioning rod are provided with inverted cone parts at ends far away from the level ruler. The bottom contact surface of the inverted cone part is smaller, so that the first positioning rod and the second positioning rod can be in contact with the edge contact of the circular arc more accurately, and the measuring accuracy is improved.
Preferably, the level bar is provided with a plurality of mounting holes along a straight line, and the first positioning rod and the second positioning rod are both mounted in the mounting holes. First locating lever and second locating lever can be as required the different circular arc radiuses of measuring, install both on the mounting hole of difference respectively, realize that the quick installation of first locating lever and second locating lever is fixed to according to the position difference of mounting hole, there is fixed reading, can be used to measure the R angle that only has several kinds of specifications, it is more convenient to use the measurement.
Preferably, the first positioning rod and the second positioning rod are both in sliding connection with the level ruler, and the first positioning rod and the second positioning rod can be moved to different positions, so that the measuring instrument can measure R angles of various specifications, and the application range is wider.
Preferably, the first positioning rod and the second positioning rod are both provided with extending parts extending out of the level ruler, and the extending parts are provided with locking parts in threaded connection with the extending parts; the level bar is provided with a first sliding groove for the first positioning rod and the second positioning rod to slide and a second sliding groove for the extension part to slide. After first locating lever and second locating lever removed corresponding position, through screwing up the locking portion on the extension, made first locating lever and second locating lever fixed, avoided in the measurement process, both emergence slip, lead to measuring inaccurate.
Preferably, the second sliding groove penetrates through the top surface of the level bar, and the locking portion abuts against the top surface of the level bar. The extension runs through to the top surface of level bar, through screwing up locking portion, makes locking portion and the inseparable butt of level bar, realizes the fixed of first locating lever and second locating lever.
Preferably, the second chute penetrates through the side surface of the level bar, and the first positioning rod and the second positioning rod are both provided with a T-shaped part abutted against the inner bottom surface of the first chute; the locking part is abutted against the side face of the level. The T-shaped parts of the first positioning rod and the second positioning rod slide in the first sliding groove, the first sliding groove is prevented from being disengaged from the first positioning rod and the second positioning rod, the extending part runs through the side face of the horizontal ruler, and the locking part is screwed up to enable the locking part to be tightly abutted against the horizontal ruler, so that the first positioning rod and the second positioning rod are fixed.
Preferably, the measuring gauge is a dial gauge.
Compared with the prior art, the beneficial effects are: the R angle is measured through the measuring rods, the operation is simple, the positions of the two positioning rods only need to be adjusted, the radius of the R angle can be calculated by reading two readings, and the R angle measuring efficiency is improved.
Drawings
Fig. 1 is a schematic structural diagram of a measuring instrument for R-angle measurement according to the present invention;
fig. 2 is a schematic diagram of radius calculation of a measuring instrument for R-angle measurement according to the present invention;
FIG. 3 is a bottom view of the level of the present invention;
FIG. 4 is a schematic view of the sliding connection structure between the first positioning rod and the level;
fig. 5 is a schematic view of a sliding connection structure of the first positioning rod and another embodiment of the level.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are the terms "upper", "lower", "left", "right", "long", "short", etc. indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore the terms describing the positional relationship in the drawings are only for illustrative purposes and are not to be construed as limiting the present patent, and those skilled in the art will understand the specific meaning of the terms according to their specific circumstances.
The technical solution of the present invention is further described in detail by the following specific embodiments in combination with the accompanying drawings:
example 1
Fig. 1 shows an embodiment of a measuring instrument for R-angle measurement, which includes a level 1, a measuring gauge 2 installed at the midpoint of the level 1 and perpendicular to the level 1, a first positioning rod 3 installed at different positions of the level 1, and a second positioning rod 4 installed at different positions of the level 1; the probe of the measuring instrument 2 penetrates through the level bar 1 and is connected with a measuring rod 5, and a first positioning rod 3 and a second positioning rod 4 are positioned on two sides of the measuring rod 5; the first positioning rod 3 and the second positioning rod 4 have the same structure. In the present embodiment, the measurement gauge 2 is a dial gauge.
Specifically, level bar 1 is provided with the scale, and the scale uses the mid point of level bar 1 to increase progressively to both sides for zero scale point, reads the distance of first locating lever 3 or second locating lever 4 to mid point more conveniently. The surfaces of the first positioning rod 3 and the second positioning rod 4 are provided with axle line scratches. The axis scratch can be as a reading benchmark to the position that the axis scratch is located the scale is read, thereby guarantees that the reading is more accurate.
Wherein, the end of the first locating lever 3 and the second locating lever 4 far away from the level bar 1 is provided with an inverted cone part 6. The bottom contact surface of the inverted cone part 6 is smaller, so that the first positioning rod 3 and the second positioning rod 4 can be more accurately contacted with the edge contact of the circular arc, and the measuring accuracy is improved.
The working principle or working process of the embodiment is as follows: when R angle measurement is carried out, the measuring meter 2 is enabled to be zero, the first locating rod 3 and the second locating rod 4 are respectively located on two sides of the measuring meter 2, the lower ends of the first locating rod 3 and the second locating rod 4 are parallel and level, and the first locating rod 3 and the second locating rod 4 are basically in parallel and level states due to the fact that mechanisms of the first locating rod 3 and the second locating rod 4 are consistent. Adjust the position of first locating lever 3 and second locating lever 4, the distance of first locating lever 3 and second locating lever 4 and 1 mid point of level bar equals, make first locating lever 3 and second locating lever 4 contact the contact of circular arc both sides edge of surveying respectively, make the circumference coincidence of level bar 1 and circular arc simultaneously, measuring stick 5 is by the size according to the kind of circular arc of surveying (the R angle of evagination or the R angle of indent), the up-and-down motion produces the displacement change, reach the contact of the intermediate position of circular arc. As shown in fig. 2, since the distances from the first positioning rod 3 and the second positioning rod 4 to the midpoint are known, that is, AC is BC and is known, the data of the measurement table 2 is used to obtain the CD reading, and the radius of the R angle is R, that is, OC is R-CD, R2＝OC2+AC2Converted to obtain R ═ CD2+AC2) And/2 CD, calculating the radius of the R angle, and obtaining the specific radius of the R angle.
The beneficial effects of this embodiment: the R angle is measured through the measuring rod 5, the operation is simple, the positions of the two positioning rods only need to be adjusted, the radius of the R angle can be calculated by reading two readings, and the R angle measuring efficiency is improved.
Example 2
As shown in fig. 1 and 3, another embodiment of the measuring instrument for R-angle measurement is provided, and on the basis of embodiment 1, in this embodiment, the structure of the level 1 is further defined. Level bar 1 has a plurality of mounting holes 101 along the straight line distribution, and first locating lever 3 and second locating lever 4 are all installed in mounting hole 101. First locating lever 3 and second locating lever 4 can be as required the different circular arc radiuses of measuring, install both respectively on different mounting holes 101, realize that the quick installation of first locating lever 3 and second locating lever 4 is fixed to according to the position difference of mounting hole 101, there is fixed reading, can be used to measure the R angle that only has several kinds of specifications, it is more convenient to use the measurement.
The remaining features and operating principle of this implementation are consistent with embodiment 1.
Example 3
Referring to fig. 1 and 4, another embodiment of a measuring instrument for measuring R-angle is shown, in embodiment 1, the structure of the level 1 is further limited, in this embodiment, the first positioning rod 3 and the second positioning rod 4 are both connected with the level 1 in a sliding manner, and the first positioning rod 3 and the second positioning rod 4 can be moved to different positions, so that the measuring instrument can measure R-angles of various specifications, and the application range is wider.
Specifically, the first positioning rod 3 and the second positioning rod 4 are both provided with an extension part 7 extending out of the level bar 1, and the extension part 7 is provided with a locking part 8 in threaded connection with the extension part 7; the level 1 is provided with a first slide groove 101 for the first positioning rod 3 and the second positioning rod 4 to slide and a second slide groove 102 for the extension portion 7 to slide. After first locating lever 3 and second locating lever 4 removed corresponding position, through screwing up locking part 8 on the extension 7, make first locating lever 3 and second locating lever 4 fixed, avoid in the measurement process, both emergence slip, lead to measuring inaccurate.
The second sliding groove 102 penetrates the top surface of the level 1, and the locking portion 8 abuts against the top surface of the level 1. Extension 7 runs through to the top surface of level bar 1, through screwing up locking portion 8, makes locking portion 8 and level bar 1 inseparable butt, realizes the fixed of first locating lever 3 and second locating lever 4.
The remaining features and operating principle of this implementation are consistent with embodiment 1.
Example 4
Referring to fig. 1 and 5, another embodiment of a measuring instrument for measuring R-angle is shown, in embodiment 1, the structure of the level 1 is further limited, in this embodiment, the first positioning rod 3 and the second positioning rod 4 are both connected with the level 1 in a sliding manner, and the first positioning rod 3 and the second positioning rod 4 can be moved to different positions, so that the measuring instrument can measure R-angles of various specifications, and the application range is wider.
Specifically, the first positioning rod 3 and the second positioning rod 4 are both provided with an extension part 7 extending out of the level bar 1, and the extension part 7 is provided with a locking part 8 in threaded connection with the extension part 7; the level 1 is provided with a first slide groove 101 for the first positioning rod 3 and the second positioning rod 4 to slide and a second slide groove 102 for the extension portion 7 to slide. After first locating lever 3 and second locating lever 4 removed corresponding position, through screwing up locking part 8 on the extension 7, make first locating lever 3 and second locating lever 4 fixed, avoid in the measurement process, both emergence slip, lead to measuring inaccurate.
The second chute 102 penetrates through the side surface of the level bar 1, and the first positioning rod 3 and the second positioning rod 4 are both provided with a T-shaped part 9 which is abutted against the inner bottom surface of the first chute 101; the locking portion 8 abuts against the side surface of the level 1. The T-shaped part 9 of the first positioning rod 3 and the second positioning rod 4 slides in the first sliding groove 101, so that the first positioning rod 3 and the second positioning rod 4 are prevented from being separated from the first sliding groove 101, the extension part 7 penetrates through the side face of the horizontal ruler 1, the locking part 8 is tightly abutted against the horizontal ruler 1 through screwing the locking part 8, and the first positioning rod 3 and the second positioning rod 4 are fixed.
The remaining features and operating principle of this implementation are consistent with embodiment 1.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A measuring instrument for R-angle measurement, characterized by comprising a level (1), a measuring gauge (2) installed at the midpoint of the level (1) and perpendicular to the level (1), a first positioning rod (3) mountable at different positions of the level (1), and a second positioning rod (4) mountable at different positions of the level (1); the probe of the measuring meter (2) penetrates through the level ruler (1) and is connected with a measuring rod (5), and the first positioning rod (3) and the second positioning rod (4) are positioned on two sides of the measuring rod (5); the first positioning rod (3) and the second positioning rod (4) are consistent in structure.
2. A measuring instrument for R angle measurement according to claim 1, characterized in that the level (1) is provided with a scale which increases to both sides with the midpoint of the level (1) being zero.
3. A measuring instrument for R angle measurement according to claim 2, characterized in that the surfaces of the first positioning rod (3) and the second positioning rod (4) are provided with central axis scratches.
4. A measuring instrument for R angle measurement according to claim 2, characterized in that the ends of the first positioning rod (3) and the second positioning rod (4) remote from the level (1) are each provided with an inverted cone portion (6).
5. A measuring instrument for R angle measurement according to claim 1, characterized in that the level (1) is distributed with a plurality of mounting holes (101) along a straight line, and the first positioning rod (3) and the second positioning rod (4) are both mounted in the mounting holes (101).
6. A measuring instrument for R angle measurement according to claim 1, characterized in that the first positioning rod (3) and the second positioning rod (4) are both slidingly connected to the level (1).
7. A measuring instrument for R angle measurement according to claim 6, characterized in that the first positioning rod (3) and the second positioning rod (4) are each provided with an extension (7) extending out of the level (1), the extensions (7) being fitted with locking portions (8) in threaded connection with the extensions (7); the level bar (1) is provided with a first sliding groove (102) for the first positioning rod (3) and the second positioning rod (4) to slide and a second sliding groove (103) for the extension part (7) to slide.
8. A measuring instrument for R angle measurement according to claim 7, characterized in that the second runner (103) penetrates to the top surface of the level (1), and the locking portion (8) abuts against the top surface of the level (1).
9. A measuring instrument for R angle measurement according to claim 7, characterized in that the second runner (103) penetrates to the side of the level (1), the first positioning rod (3) and the second positioning rod (4) are each provided with a T-shaped portion (9) abutting against the inner bottom surface of the first runner (102); the locking part (8) is abutted against the side surface of the level ruler (1).
10. A measuring instrument for R-angle measurement according to any one of claims 1-9, characterized in that the measuring gauge (2) is a dial gauge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022895025.6U CN214407418U (en) | 2020-12-04 | 2020-12-04 | Measuring instrument for measuring R angle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022895025.6U CN214407418U (en) | 2020-12-04 | 2020-12-04 | Measuring instrument for measuring R angle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214407418U true CN214407418U (en) | 2021-10-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022895025.6U Active CN214407418U (en) | 2020-12-04 | 2020-12-04 | Measuring instrument for measuring R angle |
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| Country | Link |
|---|---|
| CN (1) | CN214407418U (en) |
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2020
- 2020-12-04 CN CN202022895025.6U patent/CN214407418U/en active Active
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