Hemispherical radius measuring device

Abstract

The utility model discloses a semi-spherical radius measuring device, which relates to the technical field of semi-spherical measurement, and comprises a connecting plate and three mounting arms distributed on the periphery of the connecting plate at equal intervals, the connecting plate and the three mounting arms are positioned on the same plane, and a displacement sensor mounting hole is formed in the center of the connecting plate. Measuring probe mounting holes are formed in one end, far away from the connecting plate, of the mounting arm, the shaft distances between the displacement sensor mounting hole and the three measuring probe mounting holes are equal, the measuring ends of the three measuring probes are located in the same plane, and the plane is parallel to the plane where the connecting plate is located. According to the utility model, the measuring probe and the displacement sensor are arranged on the fixing piece, and the data processing module is integrated on the displacement sensor, so that the semi-spherical radius can be measured, and the semi-spherical radius measuring device is detachable in design and convenient to carry.

Description

Technical Field

[0001] The utility model relates to the technical field of hemispherical surface measurement, in particular to a hemispherical surface radius measuring device. Background Art

[0002] When calibrating various non-standard testing equipment, many non-standard testing equipment require hemispherical radius size calibration. Currently, when calibrating the size of the hemispherical surface, large-scale three-coordinate measuring instruments are used for measurement. In actual use, the object to be measured needs to be carried back and forth, which is inconvenient to use.

[0003] Based on this, a hemispherical radius measuring device is now provided, which can effectively improve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a hemispherical radius measuring device to solve the problems in the background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A hemispherical radius measuring device includes a fixing member, the fixing member including a connecting plate and three mounting arms equidistantly distributed around the connecting plate, the connecting plate and the three mounting arms being in the same plane, a displacement sensor mounting hole being provided at the center of the connecting plate, a displacement sensor being plugged into the displacement sensor mounting hole, a data processing module being integrated and mounted on the displacement sensor, a measuring probe mounting hole being provided at one end of the mounting arm away from the connecting plate, the wheelbase between the displacement sensor mounting hole and the three measuring probe mounting holes being equal, a measuring probe being clamped into the measuring probe mounting hole, and the measuring ends of the three measuring probes being in the same plane, and the plane being parallel to the plane of the connecting plate.

[0007] On the basis of the above technical solutions, the present invention also provides the following optional technical solutions:

[0008] In an optional solution: the displacement sensor is slidably arranged in the displacement sensor mounting hole, a boss is provided on the outside of the displacement sensor, the lower surface of the boss is in contact with the upper surface of the connecting plate, the outside of the displacement sensor is threadedly connected to the bottom of the connecting plate with a hand nut, and the outer diameter of the displacement sensor matches the diameter of the displacement sensor mounting hole.

[0009] In an optional solution: the measuring probe includes a fixed column that slides through the measuring probe mounting hole, a measuring ball is provided at the lower end of the fixed column, the center of the measuring ball is on the axis of the fixed column, and the fixed column is connected to the mounting arm through a clamping structure.

[0010] In an optional solution: the clamping structure includes two fixing seats arranged on the mounting arm, the fixing seats are L-shaped, and the two fixing seats are symmetrically arranged on both sides of the measuring probe mounting hole. The fixing seats are located on the upper surface of the mounting arm, and a clamping block matching the fixing seat is provided on the outside of the fixing column. The mounting arm is provided with a limiting component for limiting the relative movement between the clamping block and the fixing seat.

[0011] In an optional solution: the limiting assembly includes a telescopic cavity arranged on the mounting arm, the position of the telescopic cavity corresponds to the position of the fixed seat, a telescopic block is slidingly provided in the telescopic cavity, the upper end of the telescopic block extends out of the upper surface of the mounting arm, the telescopic block is connected to one end of the spring, and the other end of the spring is connected to a sealing plate, and the sealing plate is arranged at the opening of the telescopic cavity on the lower surface of the mounting arm.

[0012] In an optional solution: a fourth inclined surface is provided on the rightmost side of the upper end surface of the telescopic block, a third inclined surface is provided on the left side of the fourth inclined surface on the upper end surface of the telescopic block, a supporting surface is provided on the left side of the third inclined surface on the upper end surface of the telescopic block, a first inclined surface matching the fourth inclined surface is provided on the left side of the clamping block, a second inclined surface matching the third inclined surface is provided on the right side of the clamping block, and the supporting surface is in contact with the lower surface of the clamping block.

[0013] In an optional solution: the fixing column is provided with anti-slip grooves.

[0014] In an optional solution: the measuring end of the displacement sensor is hemispherical.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] The utility model realizes the measurement of the hemispherical radius by arranging the measuring probe and the displacement sensor on the fixing part, and the data processing module is integrated and installed on the displacement sensor. The detachable design makes it easy to carry. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the utility model.

[0018] Figure 2 For this utility model Figure 1 A partial enlarged view of middle A.

[0019] Figure 3 This is a partial disassembly diagram of the utility model.

[0020] Figure 4 This is a schematic structural diagram of the limit assembly of the utility model.

[0021] Figure 5 This is a schematic diagram of the locking structure of the utility model in the unlocked state.

[0022] Notes on the figure markings: 101, connecting plate; 102, mounting arm; 103, displacement sensor mounting hole; 104, measuring probe mounting hole; 201, fixing column; 202, measuring ball; 203, fixing seat; 204, snap-in block; 205, telescopic cavity; 206, telescopic block; 207, spring; 208, sealing plate; 301, first inclined plane; 302, second inclined plane; 303, third inclined plane; 304, fourth inclined plane; 305, supporting surface; 401, displacement sensor; 402, boss; 403, hand-tightening nut; 404, data processing module. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0024] In one embodiment, Figure 1-Figure 5 As shown, a hemispherical radius measuring device includes a fixing part, which includes a connecting plate 101 and three mounting arms 102 equidistantly distributed around the connecting plate 101, the connecting plate 101 and the three mounting arms 102 are in the same plane, a displacement sensor mounting hole 103 is provided at the center of the connecting plate 101, a displacement sensor 401 is inserted into the displacement sensor mounting hole 103, a data processing module 404 is integrated and installed on the displacement sensor 401, a measuring probe mounting hole 104 is provided on the end of the mounting arm 102 away from the connecting plate 101, the wheelbase between the displacement sensor mounting hole 103 and the three measuring probe mounting holes 104 is equal, a measuring probe is clamped in the measuring probe mounting hole 104, and the measuring ends of the three measuring probes are in the same plane, and the plane is parallel to the plane where the connecting plate 101 is located.

[0025] In this embodiment, the measuring device is first placed on a plane so that the measuring ends of the three measuring probes are in the same plane as the measuring end of the displacement sensor 401. At this time, the data processing module 404 is reset to zero, and then the three measuring probes are simultaneously brought into contact with the hemispherical surface. At this time, the measuring end of the displacement sensor 401 is brought into contact with the hemispherical surface. The displacement difference collected by the displacement sensor 401 is transmitted to the data processing module 404. The wheelbase data between the displacement sensor mounting hole 103 and the measuring probe mounting hole 104 are pre-entered into the data processing module 404, and a program for performing calculations using the measured data and known data is burned in. The radius calculation result is finally displayed in the display area of ​​the data processing module 404.

[0026] In one embodiment, Figure 1 and Figure 3As shown, the displacement sensor 401 is slidably arranged in the displacement sensor mounting hole 103, and a boss 402 is provided on the outside of the displacement sensor 401. The lower surface of the boss 402 contacts the upper surface of the connecting plate 101. A hand nut 403 is threadedly connected to the outside of the displacement sensor 401 and the bottom of the connecting plate 101. The outer diameter of the displacement sensor 401 matches the diameter of the displacement sensor mounting hole 103. By tightening the hand nut 403, the boss 402 is tightly attached to the upper surface of the connecting plate 101, so that the displacement sensor 401 is firmly connected to the connecting plate 101. The measuring end of the displacement sensor 401 is hemispherical, and the measurement accuracy is higher.

[0027] In one embodiment, Figure 1 、 Figure 2 、 Figure 4 and Figure 5 As shown, the measuring probe includes a fixed column 201 that slides through the measuring probe mounting hole 104. A measuring ball 202 is provided at the lower end of the fixed column 201. The center of the measuring ball 202 is on the axis of the fixed column 201. The fixed column 201 is connected to the mounting arm 102 through a clamping structure. During measurement, the measuring ball 202 is in direct contact with the hemispherical surface, and the contact point is unique, which is conducive to improving measurement accuracy.

[0028] In one embodiment, Figure 2 、 Figure 4 and Figure 5 As shown, the clamping structure includes two fixing seats 203 arranged on the mounting arm 102, and the fixing seats 203 are L-shaped. The two fixing seats 203 are symmetrically arranged on both sides of the measuring probe mounting hole 104, and the fixing seats 203 are located on the upper surface of the mounting arm 102. A clamping block 204 matching the fixing seat 203 is provided on the outer side of the fixing column 201, and a limiting component for limiting the relative movement between the clamping block 204 and the fixing seat 203 is provided on the mounting arm 102. During installation, the fixing column 201 is first inserted into the measuring probe mounting hole 104 from above the mounting arm 102. After the clamping block 204 contacts the upper surface of the mounting arm 102, the fixing column 201 is rotated to make the clamping block 204 clamped in the fixing seat 203. At the same time, the limiting component limits the relative movement between the clamping block 204 and the fixing seat 203 and keeps the clamping block 204 and the fixing seat 203 in close contact.

[0029] In one embodiment, Figure 4 and Figure 5As shown, the limiting assembly includes a telescopic cavity 205 provided on the mounting arm 102, the position of the telescopic cavity 205 corresponds to the position of the fixing seat 203, a telescopic block 206 is slidably provided in the telescopic cavity 205, the upper end of the telescopic block 206 extends out of the upper surface of the mounting arm 102, the telescopic block 206 is connected to one end of a spring 207, the other end of the spring 207 is connected to a sealing plate 208, and the sealing plate 208 is provided at the opening of the telescopic cavity 205 on the lower surface of the mounting arm 102, a fourth inclined surface 304 is provided on the far right side of the upper end surface of the telescopic block 206, a third inclined surface 303 is provided on the upper end surface of the telescopic block 206 on the left side of the fourth inclined surface 304, a supporting surface 305 is provided on the upper end surface of the telescopic block 206 on the left side of the third inclined surface 303, a first inclined surface 301 matching the fourth inclined surface 304 is provided on the left side of the clamping block 204, A second inclined surface 302 that cooperates with the third inclined surface 303 is provided on the right side of the connecting block 204, and the supporting surface 305 contacts the lower surface of the clamping block 204. When clamping, the first inclined surface 301 on the clamping block 204 squeezes the fourth inclined surface 304 on the telescopic block 206, causing the telescopic block 206 to retract. After the clamping block 204 is clamped in place, the telescopic block 206 pops out, and the supporting surface 305 squeezes the lower surface of the clamping block 204 so that the clamping block 204 is close to the fixing seat 203. The third inclined surface 303 squeezes the second inclined surface 302 to prevent the clamping block 204 from accidentally detaching from the fixing seat 203. When the measuring probe needs to be disassembled for storage, the fixing column 201 is rotated to make the second inclined surface 302 squeeze the third inclined surface 303, causing the telescopic block 206 to retract. After that, the clamping block 204 is detached from the fixing seat 203, and the measuring probe can be removed.

[0030] In one embodiment, Figure 2 As shown, the fixing column 201 is provided with anti-skid patterns to prevent the fixing column 201 from slipping when being twisted.

[0031] The above embodiment discloses a hemispherical radius measuring device, which is assembled before use. First, the fixing column 201 is inserted into the measuring probe mounting hole 104 from above the mounting arm 102. After the clamping block 204 contacts the upper surface of the mounting arm 102, the fixing column 201 is rotated to make the clamping block 204 clamped into the fixing seat 203. The supporting surface 305 presses the lower surface of the clamping block 204 so that the clamping block 204 is close to the fixing seat 203. The third inclined surface 303 presses the second inclined surface 302 to prevent the clamping block from 204 accidentally detaches from the fixing seat 203, then insert the displacement sensor 401 into the displacement sensor mounting hole 103, tighten the hand nut 403, make the boss 402 close to the upper surface of the connecting plate 101, and achieve a stable connection between the displacement sensor 401 and the connecting plate 101. Then place the measuring device on a plane so that the measuring ends of the three measuring probes are in the same plane as the measuring end of the displacement sensor 401. At this time, return the data processing module 404 to zero, and then make the three measuring probes At the same time, the measuring end of the displacement sensor 401 is in contact with the hemispherical surface. The displacement difference collected by the displacement sensor 401 is transmitted to the data processing module 404. The wheelbase data between the displacement sensor mounting hole 103 and the measuring probe mounting hole 104 is pre-entered into the data processing module 404, and a program for performing calculations using the measured data and known data is burned into the data processing module 404. The radius calculation result is finally displayed in the display area of ​​the data processing module 404. In order to improve the applicability of the measuring device, different specifications of fixing parts and matching measuring probes can be prepared to accommodate hemispherical surfaces of different sizes. At the same time, the known data such as the wheelbase between the displacement sensor mounting hole 103 and the measuring probe mounting hole 104 of the fixing parts of different specifications are all input into the data processing module 404. The displacement sensor 401 is removed and installed on the new fixing part. The selection button on the data processing module 404 is used to switch to using the known data of the new fixing part, and then subsequent zeroing, measurement and calculation are performed.

[0032] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A hemispherical radius measuring device, comprising a fixing member, characterized in that: The fixing member comprises a connecting plate (101) and three mounting arms (102) equidistantly arranged around the connecting plate (101); the connecting plate (101) and the three mounting arms (102) are located on the same plane; a displacement sensor mounting hole (103) is provided at the center of the connecting plate (101); a displacement sensor (401) is inserted into the displacement sensor mounting hole (103); a data processing module (404) is integrated and mounted on the displacement sensor (401); a measuring probe mounting hole (104) is provided at one end of the mounting arm (102) away from the connecting plate (101); the wheelbase between the displacement sensor mounting hole (103) and the three measuring probe mounting holes (104) is equal; a measuring probe is clamped in the measuring probe mounting hole (104); the measuring ends of the three measuring probes are located in the same plane, and the plane is parallel to the plane where the connecting plate (101) is located.

2. A hemispherical radius measuring device according to claim 1, characterized in that: The displacement sensor (401) is slidably arranged in the displacement sensor mounting hole (103); a boss (402) is provided on the outside of the displacement sensor (401); the lower surface of the boss (402) contacts the upper surface of the connecting plate (101); a hand-tightening nut (403) is threadedly connected to the outside of the displacement sensor (401) and the bottom of the connecting plate (101); the outer diameter of the displacement sensor (401) matches the diameter of the displacement sensor mounting hole (103).

3. The hemispherical radius measuring device according to claim 1, characterized in that: The measuring probe comprises a fixing post (201) that slides through a measuring probe mounting hole (104); a measuring ball (202) is provided at the lower end of the fixing post (201); the center of the measuring ball (202) is on the axis of the fixing post (201); and the fixing post (201) is connected to the mounting arm (102) via a clamping structure.

4. A hemispherical radius measuring device according to claim 3, characterized in that: The clamping structure comprises two fixing seats (203) arranged on the mounting arm (102), the fixing seats (203) being L-shaped, the two fixing seats (203) being symmetrically arranged on both sides of the measuring probe mounting hole (104), the fixing seats (203) being located on the upper surface of the mounting arm (102), a clamping block (204) matching the fixing seat (203) being provided on the outer side of the fixing column (201), and a limiting assembly for limiting relative movement between the clamping block (204) and the fixing seat (203) being provided on the mounting arm (102).

5. The hemispherical radius measuring device according to claim 4, characterized in that: The limiting assembly includes a telescopic cavity (205) arranged on the mounting arm (102), the position of the telescopic cavity (205) corresponds to the position of the fixing seat (203), a telescopic block (206) is slidably provided in the telescopic cavity (205), the upper end of the telescopic block (206) extends out of the upper surface of the mounting arm (102), the telescopic block (206) is connected to one end of a spring (207), the other end of the spring (207) is connected to a sealing plate (208), and the sealing plate (208) is arranged at an opening of the telescopic cavity (205) located on the lower surface of the mounting arm (102).

6. The hemispherical radius measuring device according to claim 5, characterized in that: The rightmost side of the upper end surface of the telescopic block (206) is provided with a fourth inclined surface (304); the upper end surface of the telescopic block (206) is provided with a third inclined surface (303) on the left side of the fourth inclined surface (304); the upper end surface of the telescopic block (206) is provided with a supporting surface (305) on the left side of the third inclined surface (303); the left side of the clamping block (204) is provided with a first inclined surface (301) that matches the fourth inclined surface (304); the right side of the clamping block (204) is provided with a second inclined surface (302) that matches the third inclined surface (303); and the supporting surface (305) contacts the lower surface of the clamping block (204).

7. The hemispherical radius measuring device according to claim 3, characterized in that: The fixing column (201) is provided with anti-slip lines.

8. The hemispherical radius measuring device according to claim 2, characterized in that: The measuring end of the displacement sensor (401) is hemispherical.

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