CN112902806A - Incomplete arc section radius measuring device - Google Patents
Incomplete arc section radius measuring device Download PDFInfo
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- CN112902806A CN112902806A CN202110382774.5A CN202110382774A CN112902806A CN 112902806 A CN112902806 A CN 112902806A CN 202110382774 A CN202110382774 A CN 202110382774A CN 112902806 A CN112902806 A CN 112902806A
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- scale
- main scale
- auxiliary
- main
- ruler
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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
- G01B5/20—Measuring arrangements characterised by the use of mechanical techniques for measuring contours or curvatures
- G01B5/213—Measuring arrangements characterised by the use of mechanical techniques for measuring contours or curvatures for measuring radius of curvature
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- General Physics & Mathematics (AREA)
- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
The invention provides a device for measuring the radius of an incomplete arc section, which comprises a main scale and an auxiliary scale, wherein the auxiliary scale is sleeved on the main scale, main scale marks are printed on the main scale at equal intervals, auxiliary scale marks are printed on the auxiliary scale at equal intervals, the lower surface of the main scale is used as a reference surface, a main scale arm is fixed on the main scale, an auxiliary scale arm is fixed on the auxiliary scale, two surfaces of the main scale arm and the auxiliary scale arm which are oppositely arranged are respectively used as a positioning surface and a clamping surface, and when the positioning surface, the clamping surface and the reference surface are intersected with the main scale mark corresponding to the main scale mark with zero, the main scale mark corresponding to the main scale mark with zero and the auxiliary scale mark corresponding to the auxiliary scale mark with zero are collinear. By adopting the technical scheme of the invention, the incomplete arc section radius can be obtained by utilizing the matching of the main ruler and the auxiliary ruler for direct measurement and reading, the complex operation process is omitted, the operation is similar to a vernier caliper, the operation is easy to master by technicians, the measurement process is simplified, the measurement precision is improved, and the reliability of the measurement result is higher.
Description
Technical Field
The invention belongs to the technical field of measuring devices, and particularly relates to a device for measuring the radius of an incomplete arc section.
Background
In the manufacturing industry field, in order to ensure the manufacturing quality of parts, each shape element characteristic of the parts needs to be measured, however, in actual work, some parts with complex shapes are frequently encountered, the radius of the incomplete arc section characteristic on the parts needs to be measured, no special measuring apparatus exists at present for the size element, the prior art mainly has two measuring methods, the first measuring method firstly measures the chord length between two points of the incomplete arc section and the chord height corresponding to the chord length, and then obtains the corresponding arc section radius through complex calculation, and by adopting the method, on one hand, the measurement error of the chord length and the chord height is larger, and after the complex calculation, the error is further enlarged, so that the error is easy to occur, the measuring work consumes too long time, and the accuracy and the reliability of the measurement result are lower; the second measurement method is to measure the coordinates of each point of the incomplete arc section by using a three-coordinate measuring instrument, and the measurement method is long in time consumption, the price of the three-coordinate measuring instrument is not good, and the three-coordinate measuring instrument is difficult to bear for small and medium-sized enterprises and high in hardware investment cost.
Disclosure of Invention
In order to solve the technical problem, the invention provides a device for measuring the radius of an incomplete arc section.
The invention is realized by the following technical scheme.
The invention provides a non-complete arc section radius measuring device, which mainly comprises a main scale and an auxiliary scale, wherein the auxiliary scale is sleeved on the main scale and can relatively slide along the length direction of the main scale, m main scale marks are printed on the main scale at equal intervals, main scale marks which are in one-to-one correspondence with the m main scale marks are further printed on the main scale from zero according to the ascending sequence of natural numbers, n auxiliary scale marks are printed on the auxiliary scale at equal intervals, auxiliary scale marks which are in one-to-one correspondence with the n auxiliary scale marks are further printed on the auxiliary scale from zero according to the ascending sequence of natural numbers, m and n are positive integers, m is larger than or equal to n, the total length of the n auxiliary scale marks on the auxiliary scale is equal to the total length of n-1 scale marks on the main scale, the lower surface of the main scale is used as a reference surface, and a main scale arm is further fixedly connected on the main scale, and when the positioning surface, the clamping surface, the reference surface and the main scale mark corresponding to the main scale mark of zero are intersected at one point, the main scale mark corresponding to the main scale mark of zero is collinear with the auxiliary scale mark corresponding to the auxiliary scale mark of zero.
The inclination angle between the positioning surface and the reference surface or the inclination angle between the clamping surface and the reference surface are both 120 degrees.
The auxiliary scale is provided with 50 auxiliary scale marks, and the distance between every two adjacent main scale marks is 1 mm.
When the positioning surface, the clamping surface, the reference surface and the main scale mark corresponding to the main scale mark with zero are intersected at one point, the main scale mark corresponding to the main scale mark with zero is coplanar with the clamping surface.
And the auxiliary ruler is also in threaded connection with a locking screw A which is used for limiting the position of the auxiliary ruler relative to the length direction of the main ruler.
The incomplete arc section radius measuring device further comprises a fine tuning ruler, the fine tuning ruler is sleeved on the main ruler and can relatively slide along the length direction of the main ruler, an ejector rod capable of relatively sliding along the length direction of the main ruler is sleeved on the fine tuning ruler, a fine tuning nut is screwed on the ejector rod, and the fine tuning nut is used for limiting the position of the ejector rod relative to the length direction of the main ruler.
And a locking screw B is also screwed on the fine tuning ruler and is used for limiting the position of the fine tuning ruler relative to the length direction of the main ruler.
The auxiliary ruler and the auxiliary ruler arm are integrally manufactured and formed.
The main ruler arm is fixedly connected with the main ruler through screws.
The main scale is also marked with a measuring range, and the measuring range corresponds to the total length of the m main scale marks on the main scale.
The invention has the beneficial effects that: by adopting the technical scheme of the invention, when the radius of the incomplete arc section on the part is measured, the incomplete arc section to be measured is clamped by the main ruler arm and the auxiliary ruler arm, and the incomplete arc section to be measured is attached to the reference surface, the positioning surface and the clamping surface, so that the radius of the incomplete arc section can be read and obtained from the matching between the main ruler and the auxiliary ruler.
Drawings
Fig. 1 is a schematic structural view of the present invention.
In the figure: 1-main ruler, 2-auxiliary ruler, 3-main scale mark, 4-auxiliary scale mark, 13-main ruler arm, 14-auxiliary ruler arm, 6-positioning surface, 7-clamping surface, 5-reference surface, 8-locking screw A, 9-fine adjusting ruler, 10-ejector rod, 11-fine adjusting nut and 12-locking screw B.
Detailed Description
The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.
As shown in figure 1, the invention provides a non-complete arc radius measuring device, comprising a main scale 1 and a sub scale 2, wherein the sub scale 2 is sleeved on the main scale 1 and can relatively slide along the length direction of the main scale 1, m main scale marks 3 are marked on the main scale 1 at equal intervals, main scale marks corresponding to the m main scale marks 3 one by one are further marked on the main scale 1 according to the ascending sequence of natural numbers from zero, n sub scale marks 4 are marked on the sub scale at equal intervals, sub scale marks corresponding to the n sub scale marks 4 one by one are further marked on the sub scale 2 according to the ascending sequence of natural numbers from zero, m and n are positive integers, m is not less than n, the total length of the n sub scale marks 4 on the sub scale 2 is equal to the total length of the n-1 main scale marks 3 on the main scale 1, the lower surface of the main scale 1 is used as a reference surface 5, and a main scale arm 13 is fixedly connected on the main scale 1, the auxiliary scale 2 is also fixedly connected with an auxiliary scale arm 14, two surfaces of the main scale arm 13 and the auxiliary scale arm 14 which are oppositely arranged are respectively used as a positioning surface 6 and a clamping surface 7, the inclination angle between the positioning surface 6 and the reference surface 5 is equal to the inclination angle between the clamping surface 7 and the reference surface 5, and when the positioning surface 6, the clamping surface 7, the reference surface 5 and the main scale mark 3 corresponding to the main scale mark zero are intersected at one point, the main scale mark 3 corresponding to the main scale mark zero is collinear with the auxiliary scale mark 4 corresponding to the auxiliary scale mark zero.
Further, it is preferable that the inclination angle between the positioning surface 6 and the reference surface 5 or the inclination angle between the clamping surface 7 and the reference surface 5 are both 120 °. The auxiliary scale 2 is provided with 50 auxiliary scale marks 4, and the distance between two adjacent main scale marks 3 is 1 mm.
When the positioning surface 6, the clamping surface 7, and the reference surface 5 intersect the main scale 3 corresponding to the main scale zero at a point, the main scale 3 corresponding to the main scale zero is flush with the clamping surface 7. The secondary ruler 2 is also screwed with a locking screw A8, and the locking screw A8 is used for limiting the position of the secondary ruler 2 relative to the length direction of the main ruler 1.
In addition, the incomplete arc radius measuring device further comprises a fine tuning ruler 9, the fine tuning ruler 9 is sleeved on the main ruler 1 and can relatively slide along the length direction of the main ruler 1, a top rod 10 capable of relatively sliding along the length direction of the main ruler 1 is sleeved on the fine tuning ruler 9, a fine tuning nut 11 is screwed on the top rod 10, and the fine tuning nut 11 is used for limiting the position of the top rod 10 relative to the length direction of the main ruler 1. A locking screw B12 is also screwed on the vernier 9, and a locking screw B12 is used for limiting the position of the vernier 9 in the longitudinal direction of the main scale 1.
Further, the sub-scale 2 and the sub-scale arm 14 are integrally manufactured and molded. The main scale arm 13 is fixedly connected to the main scale 1 by using a screw. The main scale 1 is also marked with a measuring range, and the measuring range corresponds to the total length of the m main scale marks 3 on the main scale 1. The measuring range is 0-150mm, 5-300mm or 5-500 mm.
In addition, when the incomplete arc segment radius measuring device is used, the method comprises the following steps: using the above-mentioned incomplete arc radius measuring device, clamping the incomplete arc to be measured by the main scale arm 13 and the auxiliary scale arm 14, and fitting the incomplete arc to be measured with the reference surface 5, the positioning surface 6 and the clamping surface 7, reading to obtain the main scale number X corresponding to the auxiliary scale number zero, reading to obtain the auxiliary scale number Y corresponding to the auxiliary scale line 4 aligned with any one of the main scale lines 3 on the auxiliary scale 2, wherein the inclination angle between the positioning surface 6 and the reference surface 5 or the inclination angle between the clamping surface 7 and the reference surface 5 is β, and then obtaining the incomplete arc radius R by the following formula:
by adopting the technical scheme of the invention, when the radius of the incomplete arc section on the part is measured, the incomplete arc section to be measured is clamped by the main ruler arm and the auxiliary ruler arm, and the incomplete arc section to be measured is attached to the reference surface, the positioning surface and the clamping surface, so that the radius of the incomplete arc section can be read from the matching between the main ruler and the auxiliary ruler.
Claims (10)
1. The utility model provides a incomplete arc section radius measuring device which characterized in that: the scale comprises a main scale (1) and an auxiliary scale (2), wherein the auxiliary scale (2) is sleeved on the main scale (1) and can relatively slide along the length direction of the main scale (1), m main scale marks (3) are marked on the main scale (1) at equal intervals, main scale marks corresponding to the m main scale marks (3) one by one are further marked on the main scale (1) from zero according to the ascending sequence of natural numbers, n auxiliary scale marks (4) are marked on the auxiliary scale at equal intervals, auxiliary scale marks corresponding to the n auxiliary scale marks (4) one by one are further marked on the auxiliary scale (2) from zero according to the ascending sequence of natural numbers, m and n are positive integers, m is not less than n, the total length of the n auxiliary scale marks (4) on the auxiliary scale (2) is equal to the total length of the n-1 main scale marks (3) on the main scale (1), the lower surface of the main scale (1) is used as a reference surface (5), a main scale arm (13) is fixedly connected to the main scale (1), an auxiliary scale arm (14) is fixedly connected to the auxiliary scale (2), two surfaces of the main scale arm (13) and the auxiliary scale arm (14) which are oppositely arranged are respectively used as a positioning surface (6) and a clamping surface (7), an inclination angle between the positioning surface (6) and the reference surface (5) is equal to an inclination angle between the clamping surface (7) and the reference surface (5), and when the positioning surface (6), the clamping surface (7), the reference surface (5) and a main scale mark (3) corresponding to the main scale mark zero are intersected at one point, the main scale mark (3) corresponding to the main scale mark zero and an auxiliary scale mark (4) corresponding to the auxiliary scale mark zero are collinear.
2. The incomplete arc radius measuring device of claim 1, wherein: the inclination angle between the positioning surface (6) and the reference surface (5) or the inclination angle between the clamping surface (7) and the reference surface (5) are both 120 degrees.
3. The incomplete arc radius measuring device of claim 1, wherein: the auxiliary scale (2) is provided with 50 auxiliary scale marks (4), and the distance between two adjacent main scale marks (3) is 1 mm.
4. The incomplete arc radius measuring device of claim 1, wherein: when the positioning surface (6), the clamping surface (7), the reference surface (5) and the main scale mark (3) corresponding to the main scale mark with zero are intersected at one point, the main scale mark (3) corresponding to the main scale mark with zero is coplanar with the clamping surface (7).
5. The incomplete arc radius measuring device of claim 1, wherein: and the auxiliary ruler (2) is also in threaded connection with a locking screw A (8), and the locking screw A (8) is used for limiting the position of the auxiliary ruler (2) relative to the main ruler (1) in the length direction.
6. The incomplete arc radius measuring device of claim 1, wherein: incomplete arc section radius measuring device still includes fine setting chi (9), fine setting chi (9) registrate in on main scale (1) and can follow main scale (1) length direction relative slip, the cover is equipped with on fine setting chi (9) can follow ejector pin (10) of main scale (1) length direction relative slip, and the spiro union has fine setting nut (11) on ejector pin (10), and fine setting nut (11) are used for injecing ejector pin (10) for the ascending position of main scale (1) length direction.
7. The incomplete arc radius measuring device of claim 6, wherein: and a locking screw B (12) is also screwed on the fine tuning ruler (9), and the locking screw B (12) is used for limiting the position of the fine tuning ruler (9) relative to the main ruler (1) in the length direction.
8. The incomplete arc radius measuring device of claim 1, wherein: the auxiliary ruler (2) and the auxiliary ruler arm (14) are integrally manufactured and molded.
9. The incomplete arc radius measuring device of claim 1, wherein: the main ruler arm (13) is fixedly connected with the main ruler (1) through screws.
10. The incomplete arc radius measuring device of claim 1, wherein: the main scale (1) is also marked with a measuring range, and the measuring range corresponds to the total length of the m main scale marks (3) on the main scale (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110382774.5A CN112902806A (en) | 2021-04-09 | 2021-04-09 | Incomplete arc section radius measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110382774.5A CN112902806A (en) | 2021-04-09 | 2021-04-09 | Incomplete arc section radius measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112902806A true CN112902806A (en) | 2021-06-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110382774.5A Pending CN112902806A (en) | 2021-04-09 | 2021-04-09 | Incomplete arc section radius measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112902806A (en) |
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2021
- 2021-04-09 CN CN202110382774.5A patent/CN112902806A/en active Pending
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