Diameter-adjustable ball diameter gauge

Abstract

The application provides a diameter-adjustable ball diameter instrument, which is characterized by comprising an indicating table, a fixing base and a vertical measuring head, the fixing base is provided with a through hole in the center, the indicating table is fixedly installed in the through hole of the fixing base, at least three sliding grooves are provided around the fixing base with the center of the through hole as the center, the vertical measuring head is provided on the fixing base through the sliding grooves, and the fixing base is composed of three stacked ring plates, which are a first ring plate, a second ring plate and a third ring plate in sequence, the second ring plate is located between the first ring plate and the third ring plate and can rotate relative to the two ring plates, so as to drive the vertical measuring head to move close to and away from the center of the through hole. The ball diameter instrument can measure workpieces of optical spherical mirrors and aspherical mirrors with different diameters without replacing the measuring ring, is convenient to operate, has wider universality, has better centering function, has high detection precision and has wide application prospect.

Description

TECHNICAL FIELD

[0001] The present application belongs to optical detection device, especially relates to a diameter-adjustable sphericity tester. BACKGROUND

[0002] For the measurement of optical spherical mirror and aspherical mirror, the sphericity tester with a measuring ring can directly measure in situ, but a measuring ring can only measure workpieces with the same diameter, and the application range is poor, so multiple measuring rings with different measuring ranges need to be prepared for replacement in the early stage of measurement, but the replacement process of the measuring ring is troublesome, and there is a defect that the center of the circle cannot be accurately determined, resulting in inaccurate measurement results. SUMMARY

[0003] In view of the above, the present application provides a diameter-adjustable sphericity tester which can measure workpieces of different diameter optical spherical mirror and aspherical mirror without replacing the measuring ring, is convenient to operate, has wider universality, better centering function, high detection precision, and wide application prospect.

[0004] The specific technical scheme of the present application is as follows:

[0005] A diameter-adjustable sphericity tester, characterized in that it comprises an indicating table, a fixed seat and a vertical probe, the fixed seat is provided with a through hole in the center, the indicating table is fixedly installed in the through hole of the fixed seat, at least three sliding grooves are provided around the fixed seat with the center of the through hole as the center, the vertical probe is provided on the fixed seat through the sliding grooves, the fixed seat is composed of three stacked ring discs, which are a first ring disc, a second ring disc and a third ring disc in sequence, the second ring disc is located between the first ring disc and the third ring disc and can rotate relative to the two ring discs to drive the vertical probe to move close to and away from the center of the through hole.

[0006] Further, the sliding grooves on the first ring disc and the third ring disc are strip-shaped moving sliding grooves along the diameter direction of the ring disc, and the moving sliding grooves on the first ring disc are marked with scales.

[0007] Further, the sliding grooves on the second ring disc are strip-shaped rotating sliding grooves intersecting with the diameter of the ring disc, and intersect with the moving sliding grooves on the first ring disc and the third ring disc.

[0008] Further, the first ring disc and the third ring disc are connected and fixed by at least three vertical columns located at the edges of the ring discs.

[0009] Further, an arc-shaped rotating track is formed on the second ring disc for the vertical columns to pass through.

[0010] Further, a protruding ring sleeve is fixed on the vertical probe and located between the second ring disc and the third ring disc, which is used for buckling the vertical probe to prevent it from moving up and down.

[0011] Further, at least three screw holes are arranged on the first ring disc, and locking screws are matched with the screw holes, and the locking screws can fix the position of the second ring disc.

[0012] Additional aspects and advantages of the present application will be further understood from the following detailed description, and will be more fully appreciated, upon consideration of the following detailed description, with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the adjustable diameter ball diameter instrument of the present application;

[0014] Figure 2 It is a schematic diagram of the exploded structure of the adjustable diameter ball diameter instrument of the present application, which does not contain an indicator table;

[0015] Figure 3 It is a measurement principle diagram of the adjustable diameter ball diameter instrument of the present application;

[0016] Wherein, 1 - indicator table, 2 - fixed seat, 21 - first ring disc, 22 - second ring disc, 23 - third ring disc;

[0017] 3 - vertical probe, 4 - through hole, 5 - sliding groove, 51 - moving sliding groove, 52 - rotating sliding groove;

[0018] 6 - rotating track, 7 - stand, 8 - fixed port, 9 - screw port, 10 - indicator table probe, 11 - protruding ring sleeve. DETAILED DESCRIPTION

[0019] The embodiments described below with reference to the drawings are exemplary and are only used to explain the present application, and cannot be explained as a limitation of the present application.

[0020] Reference Figure 1 and Figure 2 An embodiment of the adjustable diameter ball diameter instrument of the present application comprises an indicator table 1, a fixed seat 2 and a vertical probe 3, the fixed seat 2 is provided with a through hole 4 in the center, the indicator table 1 is fixedly installed in the through hole 4 of the fixed seat 2, at least three sliding grooves 5 are provided around the fixed seat 2 with the center of the through hole 4 as the center, and the vertical probe 3 is provided on the fixed seat 2 through the sliding grooves 5. Specifically, the fixed seat 2 is composed of three layers of ring discs, which are a first ring disc 21, a second ring disc 22 and a third ring disc 23 in sequence, the second ring disc 22 is located in the middle of the first ring disc 21 and the third ring disc 23 and can rotate relative to the two, thereby driving the vertical probe 3 to move close to and away from the center of the through hole 4.

[0021] Preferably, the grooves 5 on the first annular disk 21 and the third annular disk 23 are strip-shaped moving grooves 51 along the diameter direction of the annular disk. The moving groove 51 of the first annular disk 21 is marked with a scale, allowing direct reading of the radius value measured by the vertical probe 3. The groove 5 on the second annular disk 22 is a strip-shaped rotating groove 52 intersecting the diameter of the annular disk, intersecting with the moving grooves 51 on the first annular disk 21 and the third annular disk 23. When measuring workpieces of different diameters, rotating the second annular disk 22 causes the vertical probe 3 to move closer to and further away from the center of the through hole 4 within the rotating groove 52 and the moving groove 51, thereby achieving diameter adjustment.

[0022] Preferably, the first annular disk 21 and the third annular disk 23 are connected and fixed by at least three columns 7 located at the edges of the disks, ensuring that the first annular disk 21 and the third annular disk 23 remain stationary. The second annular disk 22 is provided with an arc-shaped rotating track 6 for the columns 7 to pass through, so that the second annular disk 22 can rotate smoothly.

[0023] Preferably, a protruding ring 11 is fixed on the vertical probe 3, located between the second ring disk 22 and the third ring disk 23, to lock the vertical probe 3 and prevent it from moving up and down.

[0024] Preferably, the first annular disc 21 is also provided with at least three screw holes 9, which cooperate with locking screws. Tightening the locking screws can fix the position of the second annular disc 22, keeping the second annular disc 22 fixed, that is, locking the position of the three vertical probes 3. Before rotating the second annular disc 22, the locking screws should be loosened to ensure smooth rotation.

[0025] In this embodiment, the indicator 1 is preferably a dial indicator. The probe of the dial indicator is used to measure the dimensions of the lens center and the relative lens edge. The formula for calculating the lens radius of an optical spherical or aspherical lens is: R=X R / 2+r^2 / 2X R Comparison Figure 3 , where X R The value of r is measured by a dial indicator and can be determined by the dimension marked on the first ring disk 21 of the sphere diameter meter. The sphere diameter meter of this embodiment can measure workpieces of different diameter optical spherical and aspherical mirrors without changing the measuring ring. It is easy to operate, has wider versatility, better centering function, and high detection accuracy, and has broad application prospects.

[0026] While the specific embodiments of the application have been described in detail, it will be appreciated that various modifications and embodiments, which will be readily apparent to those skilled in the art, can be made in the application without departing from the spirit and scope of the application. Specifically, it is contemplated that reasonable variations and improvements will occur to the person skilled in the art upon the reading and understanding of the foregoing disclosure, the drawings and the claims. Other than the materials and / or layouts expressly recited in the claims, no single feature is a limiting factor of the application. The scope of the application should be determined by the following claims and their equivalents.

Claims

1. A diameter-adjustable ball diameter meter characterized by comprising: The application relates to a vertical measuring device, which comprises an indicating table, a fixed base and a vertical measuring head, the fixed base is provided with a through hole in the center, the indicating table is fixedly installed in the through hole of the fixed base, at least three sliding grooves are arranged around the fixed base and take the center of the through hole as the center, the vertical measuring head is arranged on the fixed base through the sliding grooves, the fixed base is composed of three ring discs which are stacked in sequence and are a first ring disc, a second ring disc and a third ring disc, the second ring disc is located between the first ring disc and the third ring disc and can rotate relative to the first ring disc and the third ring disc, the sliding grooves on the first ring disc and the third ring disc are strip-shaped moving sliding grooves along the diameter direction of the ring disc, the sliding groove on the second ring disc is a strip-shaped rotating sliding groove intersecting with the diameter of the ring disc and crosses the moving sliding grooves on the first ring disc and the third ring disc, the vertical measuring head is driven to synchronously move radially along the moving sliding grooves by rotating the second ring disc, so as to drive the vertical measuring head to move close to and away from the center of the through hole; a scale is marked on the moving sliding groove of the first ring disc; the first ring disc and the third ring disc are connected and fixed through at least three standing columns located at the edges of the ring discs; an arc-shaped rotating track is arranged on the second ring disc and used for allowing the standing columns to pass through.

2. The diameter-adjustable ball diameter meter according to claim 1, wherein A convex ring sleeve is fixed on the vertical measuring head and located between the second ring disc and the third ring disc, which is used for buckling the vertical measuring head to prevent the vertical measuring head from moving up and down.

3. The diameter-adjustable ball diameter meter according to claim 1, wherein At least three screw holes are further arranged on the first ring disc and matched with locking screws, the position of the second ring disc can be fixed by rotating and locking the locking screws.

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