Measuring tool for measuring angle of outer conical surface of cone

Abstract

The utility model discloses a measuring tool for measuring the angle of the outer conical surface of a cone, which comprises a base, a measuring assembly, a conversion assembly and a reading assembly, and measured data of the measuring assembly is displayed in the reading assembly through the conversion assembly. The base is provided with a measuring assembly mounting position, a conversion assembly mounting position and a reading assembly mounting position and is used for mounting the measuring assembly, the conversion assembly and the reading assembly, the measuring assembly comprises a measuring tool body and a core rod arranged in the measuring tool body in a sliding manner, a pressure spring is arranged between the core rod and the measuring tool body, the measuring tool body is provided with a first conical surface, and the first conical surface is provided with a second conical surface. The core rod is provided with a first conical surface, three inserts are uniformly distributed on the first conical surface, three conical surfaces on the three inserts form a second conical surface, the core rod is provided with a third conical surface, and the second conical surface and the third conical surface are centrally coaxial and are positioning surfaces in contact with the conical surface of the calibration cone. The problem that large-batch and high-precision product detection cannot be realized by the existing conical surface angle detection equipment is solved.

Description

Technical Field

[0001] The utility model belongs to the field of cone surface angle measuring equipment, in particular to a measuring tool for measuring the angle of the outer cone surface of a cone. Background Art

[0002] In the existing technology, the angle of the external cone surface is generally measured by conventional measuring tools such as universal angle rulers, or by three-dimensional coordinate measuring machines. However, these measurement methods cannot meet the technical requirements and detection efficiency for high-precision and large-scale measurement objects, and the detection cost is high. Utility Model Content

[0003] The purpose of the utility model is to provide a measuring tool for measuring the angle of the outer conical surface of a cone, so as to solve the problem that the existing conical surface angle detection equipment cannot realize large-scale and high-precision product detection.

[0004] In order to solve the above problems, the utility model discloses a measuring tool for the angle of the conical surface outside a cone, comprising a base, a measuring component, a conversion component and a reading component, wherein the measurement data of the measuring component is displayed in the reading component through the conversion component; a measuring component mounting position, a conversion component mounting position and a reading component mounting position are provided on the base for installing the measuring component, the conversion component and the reading component, the measuring component comprises a measuring body and a core rod slidably arranged in the measuring body, a compression spring is provided between the core rod and the measuring body, a first conical surface is provided on the measuring body, three inserts are evenly distributed on the first conical surface, the three conical surfaces on the three inserts constitute a second conical surface, a third conical surface is provided on the core rod, the second conical surface and the third conical surface maintain center coaxiality, the second conical surface and the third conical surface are positioning surfaces in contact with the conical surface of the proofreading cone.

[0005] As a further improvement of the above technical solution:

[0006] The reading component comprises a dial base, a clamp spring is mounted on the dial base, and a dial indicator is mounted in the clamp spring.

[0007] A threaded hole is provided on one side of the table base, a knurled flat head screw is provided in the threaded hole, and the knurled flat head screw is in contact with the clamping spring.

[0008] The conversion assembly includes a lever seat, on which a lever is rotatably connected via a pin, the core rod contacts one side of the lever, and the dial indicator contacts the other side of the lever, and the movement of the core rod is transmitted to the dial indicator through the lever to obtain a reading.

[0009] The device is specifically provided with an air hole, which can prevent the core rod from being unable to operate normally due to poor internal airflow.

[0010] The first conical surface, the second conical surface and the third conical surface have the same cone angle.

[0011] A handle is provided inside the calibration cone, which makes it easy to carry the calibration cone.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] The utility model is a measuring tool for measuring the angle of the outer conical surface of a cone. It uses a lever structure and a helical spring structure that bears pressure to reflect the change of the angle of the outer conical surface to be measured on the dial indicator. It solves the problem that conventional measuring tools such as universal angle rulers cannot perform high-precision and large-scale measurements.

[0014] The utility model has a novel structure and is easy to operate. Products can be loaded and unloaded only by holding the workpiece; the angle of the outer cone surface can be measured by pressing the workpiece by hand. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the internal structure of the measuring tool for measuring the angle of the outer conical surface of a cone in the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the base in top view and cross-section;

[0017] Figure 3 Schematic diagram of the structure of the utility model in plan view and cross section;

[0018] Figure 4 This is a schematic diagram of the core rod structure of the utility model.

[0019] Figure numerals: 1. Base; 2. Lever; 3. Dial base; 4. Knurled flat head screw; 5. Clip spring; 6. Pin; 7. Lever base; 8. Hexagonal nut; 10. Compression spring; 11. Hexagon socket head screw; 12. Core rod; 13. Measuring tool; 14. Correction cone; 15. Slotted pan head screw; 16. Insert; 17. Handle; 18. Correction conical surface; 19. Second conical surface; 20. First conical surface; 21. Third conical surface; 22. Upper right plane of lever; 23. Upper left plane of lever; 24. Dial indicator; 131. Air hole. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0021] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," "the other end," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc. should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] This embodiment discloses a measuring tool for measuring the angle of a conical surface outside a cone, including a base 1, on which a measuring component, a conversion component and a reading component are installed, which correspond to a measuring body 13, a lever seat 7 and a dial seat 3 respectively. The measuring body 13 is provided with a first conical surface 20, and three inserts 16 are evenly distributed on the first conical surface 20. The three conical surfaces on the three inserts 16 constitute a second conical surface 19. The core rod 12 is provided with a third conical surface 21. The second conical surface 19 and the first conical surface 20 maintain coaxial centers and are positioning surfaces that contact the calibration cone surface 18 of the calibration cone 14 respectively. A clamping spring 5 is installed on the dial seat 3, and a dial indicator 24 is installed in the clamping spring 5. The lever 2 is installed on the lever seat 7 through a pin 6. The core rod 12 slides up and down along the inner hole of the measuring body 13. When pressed down, the probe of the core rod 12 touches the upper right plane 22 of the lever, and the lever 2 rotates around the pin 6. When the lever is lifted, the upper left plane 23 touches the probe of the dial indicator 24, and the dial indicator 24 displays the angle reading.

[0025] The first conical surface 20, the second conical surface 19 and the third conical surface 21 have the same cone angle. The cone angle of the first conical surface 20 is 55°30', the cone angle of the second conical surface 19 is 55°30', and the cone angle of the third conical surface 21 is 55°30'.

[0026] The cone angle of the calibration cone 14 is 55°30′±30″, and its roundness is not greater than 0.005 mm.

[0027] The coaxiality of the inner and outer circles of the core rod 12 is not greater than 0.008 mm.

[0028] The coaxiality between the inner cone of the insert 16 and the inner hole of the measuring body 13 is not greater than 0.008 mm.

[0029] The base 1 is provided with a waist-shaped and circular stepped combination hole, and the lever seat 7 is installed in the circular hole of the base 1, and is oriented in the waist-shaped groove of the base 1 through the two side planes on the lever seat 7. The lever seat 7 should be lower than the plane of the base 1.

[0030] The base 1 is provided with three M8 screw holes, and the measuring body 13 is installed in the holes of the base 1 and is locked by three hexagon socket head screws 11.

[0031] The dial base 3 is provided with an external thread and an M6 screw hole is provided on the outer circumference. The clamp spring 5 is installed in the hole of the dial base 3, and the dial indicator 24 is installed in the clamp spring 5 and fixed by a knurled flat head screw 4.

[0032] The base 1 is provided with a screw hole with a countersunk platform, the table seat 3 is connected to the base 1 with an internal thread, and the end surface of the step hole is fitted.

[0033] The measuring body 13 is provided with three equal grooves, and three inserts 16 are installed on the measuring body 13 through slotted pan head screws 15. The conical surface on the insert 16 should be coaxial with the inner hole of the clamp body 13. A φ6 circular hole is provided on the outer circumference of the measuring body 13 as an air hole 131 to play a venting role.

[0034] Core rod 12 is externally threaded, and compression spring 10 is fitted around the smaller outer diameter of core rod 12. Core rod 12 is installed in the center hole of measuring body 13 and secured with hexagonal nut 8, which also adjusts the height of the ball head on core rod 12. External force, acting through compression spring 10, causes core rod 12 to move up and down along the inner wall of measuring body 13. In the absence of external force, the inner conical surface of core rod 12 should be higher than the first conical surface 20 of the measuring body.

[0035] A handle 17 is provided on the proofreading cone 14 to enable the proofreading cone 14 to be extracted and placed.

[0036] This tool is suitable for high-precision, high-volume measurement of the angle of a cone's outer surface. The workpiece being measured is located on an outer cone. The insert 16 supports the upper portion of the outer cone, while the core rod 12 elastically supports the lower portion, limiting a total of five degrees of freedom to achieve positioning.

[0037] This new tool utilizes a lever structure and a pressure-bearing coil spring to address the existing issues of arbitrary rotation and movement of parts. By compressing the spring, the core rod moves downward, pressing the part against the positioning cone, and automatically centering the part, thus enabling workpiece installation and measurement. This new tool automatically centers and positions parts, ensuring precise positioning.

[0038] This embodiment discloses a method for measuring the angle of the outer conical surface of a cone, comprising the following steps:

[0039] S1. Before measurement, place the calibration cone 14 into the measuring body 13. Due to its own gravity, the outer cone surface completely contacts the second conical surface 19 and the third conical surface 21. The compression spring 10 compresses the core rod 12 downward, and the probe of the core rod 12 contacts the upper right flat surface 22 of the lever. The left end of the lever 2 is lifted, and the lever 2 rotates around the pin 6, and the left end is lifted.

[0040] S2. Install the dial indicator 24 into the clamp spring 5 of the dial base 3, make the probe of the dial indicator 24 contact the upper left flat surface 23 of the lever, tighten the knurled flat head screw 4, adjust the dial indicator 24 to zero, and complete the measuring tool calibration work;

[0041] S3, lift and withdraw the calibration cone 14;

[0042] S4. The lower part of the outer conical surface of the workpiece is in contact with the third conical surface on the core rod. The workpiece is pressed vertically downward by hand until the upper part of the workpiece is completely in contact with the second conical surface. The compression spring compresses the core rod downward and the center of the workpiece is automatically centered.

[0043] S5. After the workpiece is completely centered, the probe of core rod 12 contacts the upper right flat surface 22 of lever 2. Lever 2 rotates around pin 6, raising the left end. Dial indicator 24 displays the reading. The reading displayed on dial indicator 24 is the measured value of the external cone angle. A reading within ±0.052mm is considered acceptable. For every 1' change in angle, the position of core rod 12 changes by 0.026mm, and ±2' is ±0.052mm.

[0044] The above is only an embodiment of the present invention, and common knowledge such as the specific structure and characteristics of the scheme are not described in detail here. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claim involved.

Claims

1. A measuring tool for measuring the angle of the outer conical surface of a cone, characterized by: The invention comprises a base (1), a measuring component, a conversion component and a reading component, wherein the measurement data of the measuring component is displayed in the reading component through the conversion component; the base (1) is provided with a measuring component mounting position, a conversion component mounting position and a reading component mounting position for mounting the measuring component, the conversion component and the reading component; the measuring component comprises a measuring body (13) and a core rod (12) slidably arranged in the measuring body (13); a compression spring (10) is provided between the core rod (12) and the measuring body (13) ), a first conical surface (20) is provided on the measuring body (13), three inserts (16) are evenly distributed on the first conical surface (20), and the three conical surfaces on the three inserts (16) form a second conical surface (19), and a third conical surface (21) is provided on the core rod (12), and the second conical surface (19) and the third conical surface (21) maintain center coaxiality, and the second conical surface (19) and the third conical surface (21) are positioning surfaces that contact the conical surface of the calibration cone (14).

2. The measuring tool for measuring the angle of the outer conical surface of a cone according to claim 1, characterized in that: The reading assembly comprises a dial base (3), a clamp spring (5) is mounted on the dial base (3), and a dial indicator (24) is mounted in the clamp spring (5).

3. The measuring tool for measuring the angle of the outer conical surface of a cone according to claim 2, characterized in that: A threaded hole is provided on one side of the table base (3), a knurled flat head screw (4) is provided in the threaded hole, and the knurled flat head screw (4) is in contact with the clamping spring (5).

4. The measuring tool for measuring the angle of the outer conical surface of a cone according to claim 2, characterized in that: The conversion assembly includes a lever seat (7), the lever seat (7) is rotatably connected to a lever (2) via a pin (6), the core rod (12) contacts one side of the lever (2), and the dial indicator (24) contacts the other side of the lever (2), and the movement of the core rod (12) is transmitted to the dial indicator (24) through the lever (2) to obtain a reading.

5. The measuring tool for measuring the angle of the outer conical surface of a cone according to claim 3, characterized in that: The measuring body (13) is provided with an air hole (131).

6. The measuring tool for measuring the angle of the outer conical surface of a cone according to claim 4, characterized in that: The first conical surface (20), the second conical surface (19) and the third conical surface (21) have equal cone angles.

7. The measuring tool for measuring the angle of the outer conical surface of a cone according to claim 5, characterized in that: A handle (17) is provided inside the calibration cone (14).

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