A magnetic laser interferometer reflector

Abstract

A magnetic laser interferometer reflector includes: a cylindrical shell, a corner cube prism, a nylon sheath, a neodymium magnet sheet, and a metal back cover; the inner side wall of the front end of the cylindrical shell is provided with an annular stopper, inside which the corner cube prism, the nylon sheath, and the neodymium magnet sheet are sequentially installed, and the tail end of the cylindrical shell is fixedly connected to the metal back cover. The corner cube prism is an isosceles right-angle triangular prism made of glass blocks; the nylon sheath has an inner conical surface that fits the right-angle end of the tail of the corner cube prism, and the center of the nylon sheath has a countersunk hole. The utility model installs a strong neodymium magnet inside the reflector and forms an integral body with the shell, so that the reflector has magnetic attraction. When in use, it can be directly adsorbed and fixed on the ferromagnetic metal surface of the moving part to be measured without the need for other tooling. The reflector has the characteristics of small size and light weight, and is very suitable for use in some places with low load-bearing capacity or narrow space.

Description

Technical Field

[0001] The utility model belongs to the technical field of precision testing instruments, and specifically refers to a magnetic absorption type laser interferometer reflecting mirror. Background Art

[0002] Laser interferometers can achieve very precise length dimension measurements with sub-micron or even nanometer measurement accuracy. They are usually used for precision calibration of CNC machine tools, coordinate measuring machines, and grating guides. When using laser interferometers for dimension measurement, it is usually necessary to firmly mount the reflector on the moving part to be measured, and then use the interferometer to complete the dimension measurement. Since the reflector is just a corner cube prism and its shell, it needs to be fixed on the moving part with the help of other fixtures, such as magnetic table bases, metal mounting rods, etc. These fixtures have a certain weight and volume. In some places with low load-bearing capacity or small space, the reflector is often difficult to fix and install. Sometimes it can only be fixed with glue or double-sided tape, but there are problems such as loose or too firm adhesion causing difficulty in disassembly or damage to the surface of the workpiece, making the detection process difficult.

[0003] Existing laser interferometer reflectors are usually composed of a corner cube prism and its housing. When in use, a magnetic table base, a metal mounting rod and some necessary supporting tooling are required to fix the reflector on the moving part to be measured. The installation is relatively complicated and the overall size and weight are large, which is not suitable for use in places with low load-bearing capacity or small space. Summary of the invention

[0004] The technical problem to be solved by the utility model is to provide a conveniently fixed magnetic laser interferometer reflector.

[0005] The utility model is achieved in this way:

[0006] A magnetic laser interferometer reflector, comprising: a cylindrical housing, a corner cube prism, a nylon sheath, a neodymium magnet sheet, and a metal back cover;

[0007] The inner side wall of the front end of the cylindrical shell is provided with an annular stopper, inside which the corner cube prism, the nylon sheath and the neodymium magnet sheet are sequentially installed, and the rear end of the cylindrical shell is fixedly connected to the metal back cover.

[0008] Furthermore, the corner cube prism is an isosceles right-angled prism made of glass blocks; the nylon sheath has an inner conical surface that fits the right-angled end of the corner cube prism, and the center of the nylon sheath has a countersunk hole.

[0009] Furthermore, the middle portion of the metal back cover has a circular groove.

[0010] Furthermore, the metal rear cover is connected to the rear end of the cylindrical shell via threads.

[0011] Furthermore, the metal back cover is made of magnetic conductive metal material.

[0012] The advantages of the utility model are: the utility model installs a strong neodymium magnet inside the reflector and forms an integral part with the outer shell, so that the reflector has magnetic attraction. When in use, it can be directly adsorbed and fixed on the ferromagnetic metal surface of the moving part to be measured without the need for other tooling. The reflector has the characteristics of small size and light weight, and is very suitable for use in some places with low load-bearing capacity or narrow space. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention will be further described below in conjunction with the embodiments with reference to the accompanying drawings.

[0014] Figure 1 It is an exploded view of the utility model.

[0015] Figure 2 It is a schematic diagram of the overall appearance of the utility model.

[0016] Figure 3 It is a rear view of the utility model.

[0017] Figure 4 yes Figure 3 AA section view.

[0018] Reference numerals:

[0019] 1-cylindrical housing, 11-annular stopper, 2-corner pyramid, 3-nylon sheath, 31-counterbore, 4-neodymium magnet sheet, 5-metal back cover. DETAILED DESCRIPTION

[0020] like Figures 1 to 4 As shown, a magnetic laser interferometer reflector includes: a cylindrical shell 1, a corner cube prism 2, a nylon sheath 3, a neodymium magnet sheet 4, and a metal back cover 5.

[0021] An annular stopper 11 is provided on the inner side wall of the front end of the cylindrical housing 1, and a corner cube prism 2, a nylon sheath 3, and a neodymium magnet sheet 4 are installed in sequence inside the annular stopper 11. The rear end of the cylindrical housing 1 is fixedly connected to a metal rear cover 5.

[0022] The corner cube prism 2 is an isosceles right-angled prism made of glass blocks; the nylon sheath 3 has an inner conical surface that fits the right-angled end of the corner cube prism 2, and the center of the nylon sheath 3 has a countersunk hole 31.

[0023] The metal back cover 5 is made of magnetic conductive metal material and has a circular groove in the middle.

[0024] The metal rear cover 5 is connected to the rear end of the cylindrical housing 1 through threads.

[0025] The cylindrical shell 1 is used as the main body for the installation and protection of various components, and the end is processed with internal threads; the corner cube prism 2 is an isosceles right-angled prism made of glass blocks, which can realize parallel reflection of lasers; the nylon sheath 3 fits the right-angle end of the tail of the corner cube prism 2 with an inner conical surface, and a countersunk hole 31 is set in the center to fix and protect the corner cube prism 2; the neodymium magnet sheet 4 provides magnetism for the reflector; the metal back cover 5 is made of magnetic conductive metal material, and there is a circular groove in the middle of the bottom surface to reduce the bottom surface area and ensure that the bottom surface has a high flatness. The inner side surface is threaded, and the installation and fastening are achieved through two small countersunk holes on the bottom surface. When in use, the reflector can be directly fixed on the ferromagnetic metal surface of the moving part to be measured by magnetic attraction.

[0026] Compared with the existing laser interferometer reflector, the utility model is more convenient to install, does not require other auxiliary tools such as magnetic table bases and metal mounting rods, and can significantly improve work efficiency. At the same time, the reflector of the invention is small in size and light in weight, and is very suitable for use in places with low load bearing or narrow space.

[0027] The above embodiments and drawings do not limit the product form and style of the present utility model. Any appropriate changes or modifications made by ordinary technicians in the relevant technical field should be deemed to be within the patent scope of the present utility model.

Claims

1. A magnetic laser interferometer reflector, characterized in that: include: Cylindrical housing, corner cube prism, nylon sheath, neodymium magnet sheet, metal back cover; The inner side wall of the front end of the cylindrical shell is provided with an annular stopper, inside which the corner cube prism, the nylon sheath and the neodymium magnet sheet are sequentially installed, and the rear end of the cylindrical shell is fixedly connected to the metal back cover.

2. A magnetic laser interferometer reflector as claimed in claim 1, characterized in that: The corner cube prism is an isosceles right-angled prism made of glass blocks; the nylon sheath has an inner conical surface that fits the right-angle end of the rear of the corner cube prism, and the center of the nylon sheath has a countersunk hole.

3. The magnetic laser interferometer reflector according to claim 1, characterized in that: The middle part of the metal back cover is provided with a circular groove.

4. The magnetic laser interferometer reflector according to claim 1, characterized in that: The metal rear cover is connected to the rear end of the cylindrical shell via threads.

5. The magnetic laser interferometer reflector according to claim 1, characterized in that: The metal back cover is made of magnetic conductive metal material.

Images