CN209763955U - Device for measuring arc diameter - Google Patents
Device for measuring arc diameter Download PDFInfo
- Publication number
- CN209763955U CN209763955U CN201920350491.0U CN201920350491U CN209763955U CN 209763955 U CN209763955 U CN 209763955U CN 201920350491 U CN201920350491 U CN 201920350491U CN 209763955 U CN209763955 U CN 209763955U
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- ruler
- fixed
- measuring
- scale
- diameter
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Abstract
The utility model relates to a measure device of circular arc diameter, including the angle scale, remove chi and fixed ruler, the fixed ruler with it is in to remove the chi and rotate the setting through the pivot the angle scale below, be fixed with vice chi frame in the pivot, it is equipped with the dipperstick to slide on the vice chi frame. The device of the utility model is simple in structure, the processing cost is low, and the testing process is simple, and detection efficiency is high, and the detection part can be big or small, can adopt different precision, and the detection principle is clear, and is simply understandable. The diameter of the complete circle or the incomplete circle can be detected, and the thickness of the circular ring can be detected.
Description
Technical Field
The utility model relates to a measuring instrument specifically is the instrument of measuring a circular arc.
Background
With the rapid development of science and technology and the progress of manufacturing industry, more and more complex parts are provided, in order to meet the functional requirements of parts, the characteristics of full circle and non-full circle (such as brake shoes of automobiles) are often presented in the parts, the diameter of the full circle can be detected by using a traditional measuring tool such as a vernier caliper, but if the diameter of the non-full circle is detected, the conventional measuring tool is not easy to measure, so the invention is designed to solve the problems.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve the problem of non-whole circle diameter measurement, the utility model provides a measure circular arc diameter's device, including angle scale, removal chi and fixed ruler, the fixed ruler with it is in to remove the chi and rotate the setting through the pivot the angle scale below, be fixed with vice chi frame in the pivot, it is equipped with the dipperstick to slide on the vice chi frame, the fixed ruler remove the chi with vice chi frame can rotate relatively, the notch has been seted up on the fixed ruler, the fixed ruler passes the notch with remove the crisscross setting of chi.
Preferably, the rotating shaft is located at the intersection of the fixed ruler and the movable ruler, and notches are formed in the fixed ruler and the movable ruler. The edge of the notch and the axis of the rotating shaft are on the same horizontal line, and when the fixed ruler and the movable ruler clamp a workpiece, reading is facilitated.
furthermore, in order to measure the included angle of the workpiece clamped by the fixed ruler and the movable ruler, scales are arranged on the angle scale, and a pointer corresponding to the scales is arranged at one end, close to the angle scale, of the movable ruler.
Preferably, a sliding groove is formed in the angle scale, and a locking bolt corresponding to the sliding groove is arranged on the auxiliary ruler frame. After the workpiece is clamped, the locking bolt is locked, the auxiliary ruler frame is fixed, and subsequent measurement is facilitated.
Furthermore, the fixed ruler and the movable ruler are provided with fixed holes matched with the sliding grooves, and the fixed ruler and the movable ruler are fixed through the fixed holes and the sliding grooves by the aid of set screws. The set screw fixes the fixed ruler and the movable ruler to prevent rotation during measurement.
Preferably, the rotating shaft is divided into three sections, an installation groove is formed in the end face of the upper section of the rotating shaft, the auxiliary ruler frame is fixed in the installation groove through screws, the middle section of the rotating shaft is installed in a matched mode with the angle scale, and the lower section of the rotating shaft is installed in a matched mode with the fixed ruler and the movable ruler. The auxiliary ruler frame can rotate along with the rotating shaft, so that the auxiliary ruler frame is placed on a bisector of a moving ruler and a fixed ruler included angle, and the fixed ruler, the moving ruler and the auxiliary ruler frame can rotate relatively.
Furthermore, a positioning groove is formed in the auxiliary ruler frame, and the measuring ruler is arranged in the positioning groove in a sliding mode. The dipperstick can remove in the constant head tank to satisfy the measurement requirement.
Preferably, the measuring scale is provided with scale marks, and one end of the measuring scale, which is close to the workpiece, is also provided with a probe. The probe is attached to the workpiece tightly, and the diameters of the inner circle and the outer circle of the workpiece can be measured.
Has the advantages that: the device simple structure, the processing cost is low, and the testing process is simple, and detection efficiency is high, and the detection part can be big or small, can adopt different precision, and the detection principle is clear, and is simple understandable. The diameter of the complete circle or the incomplete circle can be detected, and the thickness of the circular ring can be detected.
drawings
1. A workpiece; 2. an angle scale; 3. fixing a ruler; 4. moving the ruler; 5. a rotating shaft; 6. a screw;
7. A pointer; 8. an auxiliary scale frame; 9. locking the bolt; 10. measuring a scale; 11. a probe;
12. A notch; 13. mounting grooves; 14. positioning a groove; 15. a chute; 16. tightening the screw;
17. a notch; 18. and (7) fixing holes.
FIG. 1 is a schematic view of the present invention for measuring the diameter of an outer circle;
FIG. 2 is a schematic view of the present invention for measuring the inner circle diameter;
FIG. 3 is an assembly view of the measuring fixed ruler and the movable ruler of the present invention;
FIG. 4 is a schematic view of the rotating shaft of the present invention;
FIG. 5 is a schematic view of the auxiliary ruler holder of the present invention;
FIG. 6 is an enlarged view taken at A in FIG. 1;
Detailed Description
As shown in fig. 1, a device for measuring circular arc diameter comprises an angle scale 2, a movable scale 4 and a fixed scale 3, wherein the fixed scale 3 and the movable scale 4 are rotatably arranged below the angle scale 2 through a rotating shaft 5, an included angle of a workpiece 1 is clamped by the fixed scale 3 and the movable scale 4 for measuring, scales are arranged on the angle scale 2, and a pointer 7 corresponding to the scales is arranged on the movable scale 4. The angle scale is characterized in that a sliding groove 15 is formed in the angle scale 2, a locking bolt 9 corresponding to the sliding groove 15 is arranged on the auxiliary scale frame 8, after the workpiece 1 is clamped, the locking bolt 9 is screwed down to fix the workpiece 1, meanwhile, the fixed scale 3 and the movable scale 4 are fixed, the auxiliary scale frame 8 is fixed on the rotating shaft 5, and a measuring scale 10 is arranged on the auxiliary scale frame 8 in a sliding mode.
1. Notch 12 has been seted up on the fixed ruler 3, remove chi 4 and pass notch 12 with fixed ruler 3 sets up in the crisscross way, pivot 5 is located fixed ruler 3 with remove chi 4 the junction, fixed ruler 3 with be equipped with breach 17 on the removal chi 4, for the convenience of measurement, the edge of breach 17 with 5 axle centers of pivot are in same water flat line. The movable ruler 4 can rotate around the rotating shaft 5 to clamp workpieces 1 with different sizes. In order to measure the included angle of the workpiece 1 clamped by the fixed ruler 3 and the movable ruler 4, the angle scale 2 is provided with scales, and the movable ruler 4 is provided with a pointer 7 corresponding to the scales. The angle scale 2 is provided with a sliding groove 15, and the auxiliary scale frame 8 is provided with a locking bolt 9 corresponding to the sliding groove 15. When the workpiece 1 is clamped, the locking bolt 9 is locked, and the auxiliary ruler frame 8 is fixed, so that subsequent measurement is facilitated. The fixed ruler 3 and the movable ruler 4 are provided with fixed holes 18 matched with the sliding grooves 15, and the fixed ruler 3 and the movable ruler 4 are fixed through the fixed holes 18 and the sliding grooves 15 by the aid of set screws 16. The rotating shaft 5 is divided into three sections, an installation groove 13 is formed in the end face of the upper section of the rotating shaft 5, the auxiliary ruler frame 8 is fixed in the installation groove 13 through a screw 6, the middle section of the rotating shaft 5 is installed in a matched mode with the angle scale 2, and the lower section of the rotating shaft 5 is installed in a matched mode with the fixed ruler 3 and the movable ruler 4. The auxiliary scale frame 8 can rotate along with the rotating shaft 5, so that the auxiliary scale frame 8 is placed on a bisector of an included angle between the movable scale 4 and the fixed scale 3. The auxiliary ruler frame 8 is provided with a positioning groove 14, and the measuring ruler 10 is arranged in the positioning groove 14 in a sliding mode. The measuring tape 10 can be moved within the positioning slot 14 to meet the measuring requirements. The measuring scale 10 is provided with scale marks, and one end of the measuring scale 10 is also provided with a probe 11. The probe 11 is attached to the workpiece 1, and the diameters of the inner circle and the outer circle of the workpiece 1 can be measured.
the working principle is as follows:
Detection (1): measuring non-full-circle outside diameter (or radius)
1. before measurement, the approximate degree range of the central angle of the non-full circular arc is judged, and the angle between the fixed ruler 3 and the movable ruler 4 is adjusted;
2. After the angle between the fixed ruler 3 and the movable ruler 4 is determined, a set screw 16 connected between the movable ruler 4 and the angle scale 2 is screwed down to fix the angle to 2 a;
3. The auxiliary ruler frame 8 is moved, the locking bolt 9 is screwed down to ensure that the measuring ruler 10 on the auxiliary ruler frame 8 is on the angular bisector of the fixed ruler 3 and the movable ruler 4, the auxiliary ruler frame 8 is fixed, and namely the angle between the measuring ruler 10 and the fixed ruler 3 and the angle between the measuring ruler 10 and the movable ruler 4 are ensured to be a;
4. Placing the part to be measured between the fixed ruler 3 and the movable ruler 4, and ensuring that the excircle of the part to be measured is tangent to the fixed ruler 3 and the movable ruler 4;
5. Moving the measuring scale 10 to enable the shaft-shaped measuring scale 10 at the front end of the measuring scale 10 to be in contact with the part to be measured;
6. Tightening the measuring frame on the rotating frame and the locking bolt 9 of the measuring scale 10 to ensure that the measuring scale 10 does not slide;
7. Reading out a measurement value b through the measurement scale 10 and the scale on the measurement frame;
8. And (3) calculating: radius of part to be measured
when the central angle of the circle to which the arc of the circle to be measured corresponds is greater than 120 degrees, for convenience of calculation, the angle between the fixed ruler 3 and the movable ruler 4 is usually 60 degrees, that is, the radius of the part to be measured is R ═ b, that is, the degree is the radius of the circle to be measured.
When the central angle degree of the arc of the circle to be measured is less than 120 degrees, the data in the step 8 need to be calculated by means of a calculator.
Detection (2): measuring the internal diameter (or radius) of a non-complete ring
after the detection 1 is finished, namely the outer diameter of the circular ring is determined, the fixed ruler 3 and the movable ruler 4 are ensured to be tangent with the outer diameter of the circular ring and not to be changed, the measuring ruler 10 is moved into the circular ring, and the inner diameter is tangent with the measuring ruler 10;
step 6 of completing the detection (1);
Reading out a measurement value c through the measurement scale 10 and the scale on the measurement frame;
And (3) calculating: the inner diameter R of the ring is R + b-c.
Claims (8)
1. A device for measuring the diameter of a circular arc is characterized in that: including angle scale (2), removal chi (4) and fixed ruler (3), fixed ruler (3) with removal chi (4) rotate through pivot (5) and set up angle scale (2) below, be fixed with vice chi frame (8) on pivot (5), it is equipped with dipperstick (10) to slide on vice chi frame (8), fixed ruler (3) remove chi (4) with vice chi frame (8) can rotate relatively, notch (12) have been seted up on fixed ruler (3), fixed ruler (3) pass notch (12) with removal chi (4) crisscross the setting.
2. the apparatus for measuring the diameter of a circular arc according to claim 1, wherein: the rotating shaft (5) is located at the staggered position of the fixed ruler (3) and the movable ruler (4), and a notch (17) is formed in the fixed ruler (3) and the movable ruler (4).
3. the apparatus for measuring the diameter of a circular arc according to claim 1, wherein: scales are arranged on the angle scale (2), and a pointer (7) corresponding to the scales is arranged at one end, close to the angle scale (2), of the movable ruler (4).
4. the apparatus for measuring the diameter of a circular arc according to claim 1, wherein: the angle scale is characterized in that a sliding groove (15) is formed in the angle scale (2), and a locking bolt (9) corresponding to the sliding groove (15) is arranged on the auxiliary scale frame (8).
5. the apparatus for measuring the diameter of a circular arc according to claim 4, wherein: the fixed ruler (3) and the movable ruler (4) are provided with fixed holes (18) matched with the sliding grooves (15), and a set screw (16) penetrates through the fixed holes (18) and the sliding grooves (15) to fix the fixed ruler (3) and the movable ruler (4).
6. The apparatus for measuring the diameter of a circular arc according to claim 1, wherein: the rotary shaft (5) is divided into three sections, a mounting groove (13) is formed in the end face of the upper section of the rotary shaft (5), the auxiliary ruler frame (8) is fixed in the mounting groove (13) through a screw (6), the middle section of the rotary shaft (5) is installed in a matched mode with the angle scale (2), and the lower section of the rotary shaft (5) is installed in a matched mode with the fixed ruler (3) and the movable ruler (4).
7. the apparatus for measuring the diameter of a circular arc according to claim 6, wherein: and a positioning groove (14) is arranged on the auxiliary ruler frame (8), and the measuring ruler (10) is arranged in the positioning groove (14) in a sliding manner.
8. The apparatus for measuring the diameter of a circular arc according to claim 7, wherein: the measuring scale is characterized in that scale marks are arranged on the measuring scale (10), and a probe (11) is further arranged at one end, close to the workpiece (1), of the measuring scale (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920350491.0U CN209763955U (en) | 2019-03-19 | 2019-03-19 | Device for measuring arc diameter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920350491.0U CN209763955U (en) | 2019-03-19 | 2019-03-19 | Device for measuring arc diameter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209763955U true CN209763955U (en) | 2019-12-10 |
Family
ID=68755301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920350491.0U Expired - Fee Related CN209763955U (en) | 2019-03-19 | 2019-03-19 | Device for measuring arc diameter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209763955U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111643232A (en) * | 2020-05-27 | 2020-09-11 | 无锡市中医医院 | Multi-angle measurer for orthopedic surgery |
-
2019
- 2019-03-19 CN CN201920350491.0U patent/CN209763955U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111643232A (en) * | 2020-05-27 | 2020-09-11 | 无锡市中医医院 | Multi-angle measurer for orthopedic surgery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191210 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |