Rotary adjustable diaphragm device

Abstract

The utility model provides a rotary adjustable diaphragm device comprising a diaphragm disc, a diaphragm support and a positioning pin assembly, the diaphragm disc is rotatably installed on the diaphragm support, the diaphragm disc is provided with a plurality of diaphragms arranged in a ring shape and a plurality of positioning holes arranged in a ring shape, the apertures of the diaphragms are different, and the positioning pin assembly is arranged on the diaphragm support. The positioning holes are in one-to-one correspondence with the diaphragms. The positioning pin assembly comprises a positioning pin and a positioning ball head which is matched with one end of the positioning pin in a telescopic mode, the positioning pin is fixedly connected with the diaphragm support, and the positioning ball head can be matched with the positioning holes in a positioning mode. According to the rotary adjustable diaphragm device provided by the utility model, the aperture size of the diaphragm for testing can be changed by rotating the diaphragm disc, the mode of changing the aperture size of the diaphragm is optimized under the condition that an optical path is not adjusted, the working time is saved, and the measurement efficiency of a light beam divergence angle is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of optical instruments, in particular to a rotary adjustable diaphragm device. Background Art

[0002] In recent years, the laser manufacturing industry has flourished, and various laser products have continuously entered the market. In order to meet the needs of various industries, lasers with different parameters have emerged. The stability of laser parameters determines the application and update of laser products. It is particularly important to measure laser parameters before laser products are put into use.

[0003] For laser equipment, the size of the laser beam divergence angle affects the quality of the beam. The beam divergence angle is an important technical indicator of the laser beam. Before the laser product is put into use, the measurement of the beam divergence angle is crucial. When measuring the laser divergence angle, the existing technology needs to measure the beam diameter at a specified distance and further calculate the beam divergence angle. During the measurement process, the aperture size of the traditional fixed aperture element is determined, and it is necessary to replace the apertures of different apertures at the same position. The operation process is complicated, which increases the workload and reduces the measurement efficiency of the beam divergence angle. Utility Model Content

[0004] The utility model aims to provide a rotatable adjustable diaphragm device, which can solve the problems of complex operation of adjusting the diaphragm aperture and low measurement efficiency in the prior art when measuring the light beam divergence angle.

[0005] The utility model provides a rotatable adjustable aperture device, comprising an aperture disk, an aperture bracket and a positioning pin assembly, wherein the aperture disk can be rotatably mounted on the aperture bracket, and a plurality of apertures arranged in a ring shape and a plurality of positioning holes arranged in a ring shape are provided on the aperture disk, the apertures of the apertures are different, and the positioning holes correspond to the apertures one by one respectively; the positioning pin assembly comprises a positioning pin and a positioning ball head which can be telescopically matched with one end of the positioning pin, the positioning pin is connected and fixed to the aperture bracket, and the positioning ball head can be respectively positioned and matched with the positioning holes.

[0006] According to a rotatable adjustable aperture device provided by the utility model, each aperture is respectively arranged on the periphery of each positioning hole; a central through hole is provided at the center of the aperture disk, and an extension line of a center line between the aperture and the corresponding positioning hole passes through the center of the central through hole.

[0007] According to a rotatable adjustable aperture device provided by the utility model, a mounting through hole is provided on the aperture bracket, and the aperture disk is rotatably mounted on the mounting through hole through a mounting assembly; the mounting assembly includes a copper sleeve and a first connecting bolt, the aperture disk is rotatably sleeved on the copper sleeve through the center through hole, and the copper sleeve is connected and fixed to the mounting through hole by the first connecting bolt.

[0008] According to a rotating adjustable aperture device provided by the utility model, it also includes an indicator mark installed on the copper sleeve, the indicator mark includes a fixed ring and a pointer fixed on the fixed ring, the copper sleeve is provided with an indicator mark groove, the fixed ring is installed in the indicator mark groove, and the copper sleeve is provided with a pointer positioning notch for positioning the pointer.

[0009] According to the rotary adjustable diaphragm device provided by the utility model, a copper pad is also sleeved on the copper sleeve, and the copper pad is located between the diaphragm disc and the diaphragm bracket.

[0010] According to a rotary adjustable diaphragm device provided by the utility model, the positioning pin is provided with a hollow chamber, a compression spring is provided in the hollow chamber, and one end of the compression spring is connected to the positioning ball head.

[0011] According to a rotatable adjustable iris device provided by the utility model, a bolt hole is provided on the iris bracket, an external thread matched with the bolt hole is provided on the positioning pin, and the positioning pin is threadedly connected with the bolt hole.

[0012] According to the rotatable adjustable diaphragm device provided by the utility model, a fastening nut for fastening the diaphragm bracket is also threadedly connected to the positioning pin.

[0013] According to a rotatable adjustable diaphragm device provided by the utility model, each diaphragm is a perfect circular hole with different diameters, and a 60° chamfer is provided at the edge of each perfect circular hole.

[0014] According to a rotary adjustable diaphragm device provided by the utility model, anti-slip grooves are arranged on the outer ring of the diaphragm disc.

[0015] According to a rotatable adjustable iris device provided by the utility model, a mounting plate is provided at the bottom of the iris bracket, and the mounting plate is connected and fixed to the operating table through a second connecting bolt.

[0016] The utility model provides a rotatable adjustable iris device, which is achieved by rotatably mounting an iris disk on an iris bracket, and arranging a plurality of irises arranged in a ring shape and a plurality of positioning holes arranged in a ring shape on the iris disk, wherein the aperture of each iris is different, and each positioning hole corresponds to each iris one by one; by mounting a positioning pin on the iris bracket, and arranging a telescopic positioning ball head at one end of the positioning pin, so that the positioning ball head can be positioned and matched with each positioning hole respectively; when in use, the aperture size of the test iris can be changed by rotating the iris disk, and the method of changing the aperture size of the iris is optimized without adjusting the optical path, thereby saving working time and improving the measurement efficiency of the light beam divergence angle. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 This is a schematic diagram of the assembly structure of the rotary adjustable diaphragm device of the utility model;

[0019] Figure 2 This is a schematic diagram of the split structure of the rotary adjustable diaphragm device of the utility model;

[0020] Figure 3 It is a schematic diagram of the back structure of the aperture disc in the rotary adjustable aperture device of the utility model;

[0021] Figure 4 It is a structural schematic diagram of the aperture bracket in the rotary adjustable aperture device of the utility model;

[0022] Figure 5 This is a schematic diagram of the cooperation between the copper sleeve and the indicator mark in the rotary adjustable aperture device of the utility model;

[0023] Figure 6 This is a front view of the rotary adjustable diaphragm device of the utility model;

[0024] Figure 7 for Figure 6 AA section view.

[0025] Description of reference numerals:

[0026] 1. Aperture disc; 101. Center through hole; 102. Anti-slip groove; 2. Aperture bracket; 201. Mounting through hole; 202. Bolt hole; 203. Mounting plate; 3. Aperture; 4. Positioning hole; 5. Positioning pin; 6. Positioning ball head; 7. Copper sleeve; 701. Indicator mark groove; 702. Pointer positioning notch; 8. First connecting bolt; 9. Indicator mark; 901. Fixing ring; 902. Pointer; 10. Copper washer; 11. Fastening nut. DETAILED DESCRIPTION

[0027] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0029] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be 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 it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0030] like Figures 1 to 7As shown, the rotatable adjustable aperture device of the embodiment of the utility model comprises an aperture disc 1, an aperture bracket 2 and a positioning pin assembly, the aperture disc 1 is rotatably mounted on the aperture bracket 2, a plurality of apertures 3 arranged in an annular shape and a plurality of positioning holes 4 arranged in an annular shape are provided on the aperture disc 1, the apertures of the apertures 3 are different, and the positioning holes 4 correspond to the apertures 3 one by one. That is, the apertures 3 of different apertures required for measurement can be adjusted by rotating the aperture disc 1.

[0031] Among them, the positioning pin assembly includes a positioning pin 5 and a positioning ball head 6 that can be telescopically matched with one end of the positioning pin 5. The positioning pin 5 is connected and fixed to the aperture bracket 2, and the positioning ball head 6 can be positioned and matched with each positioning hole 4 respectively. That is, when in use, when an aperture 3 of a certain aperture is needed, it is only necessary to position and match the positioning hole 4 corresponding to the aperture 3 with the positioning ball head 6 on the positioning pin 5, so that the positioning ball head 6 can be slid into the positioning hole 4. Since the positioning ball head 6 is telescopically installed on the positioning pin 5, when it is necessary to replace the aperture 3 of a different aperture for measurement, it is only necessary to rotate the aperture disk 1, and the positioning ball head 6 can slide out of the previous positioning hole 4 until the positioning ball head 6 slides into the next positioning hole 4 for positioning. At this time, the aperture 3 corresponding to the positioning hole 4 is the next test aperture 3.

[0032] Therefore, the rotatable adjustable diaphragm device of the embodiment of the utility model can change the aperture size of the test diaphragm 3 by rotating the diaphragm disk 1, and optimizes the way of changing the aperture size of the diaphragm 3 without adjusting the optical path. Compared with the existing fixed diaphragm, there is no need to disassemble and replace the diaphragm many times during testing, which saves working time and improves the efficiency of measuring the beam divergence angle. At the same time, due to the positioning matching mode between the positioning ball head 6 and the positioning hole 4, and the one-to-one corresponding matching relationship between each positioning hole 4 and each diaphragm 3, when in use, the positioning matching between the positioning ball head 6 and different positioning holes 4 can realize accurate positioning of diaphragms 3 with different apertures, thereby improving the measurement accuracy of the optical path diameter.

[0033] Specifically, a plurality of apertures 3 are evenly arranged in a ring shape on the aperture disc 1, a plurality of positioning holes 4 are evenly arranged in a ring shape on the aperture disc 1, and each aperture 3 is respectively arranged on the periphery of each positioning hole 4. A central through hole 101 is provided at the center of the aperture disc 1, and the extension line of the center line between the aperture 3 and the corresponding positioning hole 4 passes through the center of the central through hole 101. That is, the center of the central through hole 101 is the center of the aperture 3. For each corresponding two apertures 3 and positioning holes 4, the center of the aperture 3, the center of the positioning hole 4 and the center through hole 101 are all on the same straight line. The center of the outer circle enclosed by the center of each aperture 3 is the center of the aperture disc 1, and the center of the inner circle enclosed by the center of each positioning hole 4 is the center of the aperture disc 1, thereby ensuring that the working aperture always passes through the same optical path.

[0034] Among them, the positioning hole 4 is a circular slot hole set on the back of the aperture disk 1. The size of the positioning hole 4 can meet the positioning fit after the positioning ball head 6 slides in, and at the same time can meet the positioning ball head 6 can smoothly slide out of the positioning hole 4 when force is applied to rotate the aperture disk 1.

[0035] Each aperture 3 is a perfect circular hole with different diameters, and a 60° chamfer is set at the edge of the perfect circular hole to prevent light from being reflected along the original light path. In addition, aperture scales are marked on the front of the aperture disc 1 at the position corresponding to each aperture 3, which is convenient for reading the aperture of the aperture 3, thereby further confirming the beam diameter.

[0036] Further, the aperture bracket 2 is provided with a mounting through hole 201, and the aperture disc 1 is rotatably mounted at the mounting through hole 201 through a mounting assembly. The mounting assembly includes a copper sleeve 7 and a first connecting bolt 8, and the aperture disc 1 is rotatably mounted on the copper sleeve 7 through a central through hole 101, and the copper sleeve 7 and the mounting through hole 201 are connected and fixed by the first connecting bolt 8. The first connecting bolt 8 includes a bolt rod and a connecting nut, and the bolt rod passes through the copper sleeve 7 and the mounting through hole 201 respectively and is threadedly connected with the connecting nut, thereby achieving the installation and fixation of the copper sleeve 7 on the aperture bracket 2. Since the aperture disc 1 is rotatably mounted on the copper sleeve 7, it is convenient to rotate the aperture disc 1 to select and use apertures 3 of different apertures.

[0037] Further, the rotatable adjustable aperture device further comprises an indicator mark 9 mounted on the copper sleeve 7, the indicator mark 9 comprises a fixed circular ring 901 and a pointer 902 fixed on the fixed circular ring 901, the copper sleeve 7 is provided with an indicator mark groove 701, the fixed circular ring 901 is installed in the indicator mark groove 701, and the copper sleeve 7 is further provided with a pointer positioning notch 702 for positioning the pointer 902. That is, the bolt rod of the first connecting bolt 8 can pass through the fixed circular ring 901, so that the indicator mark 9 is fixedly mounted on the copper sleeve 7. By setting the indicator mark 9, the working aperture is determined.

[0038] During installation, the pointer 902 of the indicator 9 can be pointed to the horizontal direction, and then the indicator 9 and the copper sleeve 7 can be fixed. Then, during use, the aperture disc 1 is rotated to make the positioning ball head 6 slide on the back of the aperture disc 1. When the positioning ball head 6 slides into the corresponding positioning hole 4, the direction of the pointer 902 of the indicator 9 and the line between the center of the positioning hole 4 and the center of the central through hole 101 are in the same horizontal plane and in the same direction. At this time, the aperture 3 corresponding to the positioning hole 4 pointed to by the pointer 902 of the indicator 9 is the working aperture. At this time, stop applying external force to make the positioning ball head 6 slide into the positioning hole 4 to position the aperture disc 1. After that, the aperture disc 1 can continue to be rotated to make the positioning ball head 6 slide out of the positioning hole 4 until it slides into the next positioning hole 4. Through this process, the working aperture is changed.

[0039] A copper pad 10 is also mounted on the copper sleeve 7, and the copper pad 10 is located between the aperture disc 1 and the aperture bracket 2. By providing the copper pad 10, the aperture disc 1 and the aperture bracket 2 can be separated, so that the aperture disc 1 can rotate freely.

[0040] Specifically, the positioning pin 5 is provided with a hollow chamber, in which a compression spring (not shown) is provided, and one end of the compression spring is connected to the positioning ball head 6. That is, under the action of the compression spring, the positioning ball head 6 can always be pressed against the back of the aperture plate 1, so that after the positioning ball head 6 slides into the corresponding positioning hole 4, the positioning effect can be achieved.

[0041] Specifically, a bolt hole 202 is provided on the aperture bracket 2 , and an external thread matched with the bolt hole 202 is provided on the positioning pin 5 , so that the positioning pin 5 can be threadedly connected with the bolt hole 202 .

[0042] A fastening nut 11 for fastening the aperture bracket 2 is also threadedly connected to the positioning pin 5. The fastening nut 11 is arranged between the aperture bracket 2 and the aperture disc 1, so as to realize the fixed installation of the positioning pin 5 on the aperture bracket 2, so as to ensure that the positioning ball head 6 can only perform telescopic action without changing its position.

[0043] Specifically, an anti-slip pattern 102 is provided on the outer ring of the aperture disc 1 to facilitate the rotation of the aperture disc 1 .

[0044] Specifically, a mounting plate 203 is provided at the bottom of the aperture bracket 2, and a mounting hole is provided on the mounting plate 203 for connecting and fixing with the operating table through the second connecting bolts.

[0045] The use process of the rotary adjustable aperture device of the utility model embodiment is as follows:

[0046] Before use, the light path is pre-modulated to point to the center of the aperture through the indicator mark 9, and the aperture bracket 2 is installed and fixed on the operating table. During use, there is no need to move the aperture bracket 2, and the apertures 3 of different apertures can be selected by rotating the aperture disc 1. When the indicator mark 9 is rotated to point to the desired aperture 3, the positioning ball head 6 automatically slides into the corresponding positioning hole 4, so that the aperture disc 1 can be fixed. Rotating the aperture disc 1 again can make the positioning ball head 6 slide out of the positioning hole 4 and slide along the back of the aperture disc 1 until it slides into the next positioning hole 4. At this time, the indicator mark 9 will point to the aperture 3 of the next desired aperture.

[0047] In this embodiment, the aperture no longer restricts the passage of the light beam. Instead, the power value received by the laser power meter is used to determine whether the light beam is blocked at the aperture. The aperture of the aperture 3 is changed by rotating the aperture disk 1 so that the aperture of the aperture 3 is exactly equal to the beam diameter. The beam diameter is then calculated by reading the aperture of the aperture 3.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A rotatable adjustable diaphragm device, characterized in that: It includes an aperture disk, an aperture bracket and a positioning pin assembly, the aperture disk is rotatably mounted on the aperture bracket, a plurality of apertures arranged in a ring shape and a plurality of positioning holes arranged in a ring shape are provided on the aperture disk, the apertures of the apertures are different, and the positioning holes correspond to the apertures one by one respectively; the positioning pin assembly includes a positioning pin and a positioning ball head which can telescopically cooperate with one end of the positioning pin, the positioning pin is connected and fixed to the aperture bracket, and the positioning ball head can be positioned and cooperated with the positioning holes respectively.

2. The rotatable adjustable diaphragm device according to claim 1, characterized in that: Each of the apertures is arranged at the periphery of each of the positioning holes respectively; a central through hole is provided at the center of the aperture disc, and an extension line of a central line between the aperture and the corresponding positioning hole passes through the center of the central through hole.

3. The rotatable adjustable diaphragm device according to claim 2, characterized in that: A mounting through hole is provided on the aperture bracket, and the aperture disk is rotatably mounted on the mounting through hole through a mounting assembly; the mounting assembly includes a copper sleeve and a first connecting bolt, and the aperture disk is rotatably mounted on the copper sleeve through the central through hole, and the copper sleeve is connected and fixed to the mounting through hole by the first connecting bolt.

4. The rotatable adjustable diaphragm device according to claim 3, characterized in that: It also includes an indicator mark installed on the copper sleeve, the indicator mark includes a fixed ring and a pointer fixed on the fixed ring, the copper sleeve is provided with an indicator mark groove, the fixed ring is installed in the indicator mark groove, and the copper sleeve is provided with a pointer positioning notch for positioning the pointer.

5. The rotatable adjustable diaphragm device according to claim 3, characterized in that: A copper pad is also mounted on the copper sleeve and is located between the aperture disc and the aperture bracket.

6. The rotatable adjustable diaphragm device according to claim 1, characterized in that: The positioning pin is provided with a hollow chamber, a compression spring is provided in the hollow chamber, and one end of the compression spring is connected to the positioning ball head.

7. The rotatable adjustable diaphragm device according to claim 1, characterized in that: The aperture bracket is provided with a bolt hole, the positioning pin is provided with an external thread matched with the bolt hole, and the positioning pin is threadedly connected to the bolt hole; the positioning pin is also threadedly connected with a fastening nut for fastening the aperture bracket.

8. The rotatable adjustable diaphragm device according to claim 1, characterized in that: Each of the apertures is a perfect circular hole with different diameters, and a 60° chamfer is provided at the edge of each of the perfect circular holes.

9. The rotatable adjustable diaphragm device according to claim 1, characterized in that: Anti-slip grooves are arranged on the outer ring of the aperture disc.

10. The rotatable adjustable diaphragm device according to claim 1, characterized in that: A mounting plate is provided at the bottom of the aperture bracket, and the mounting plate is connected and fixed to the operating table via a second connecting bolt.

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