Manual focusing laser beam focusing device

Abstract

The utility model discloses a manual focusing laser beam focusing device which comprises a cylindrical frame and semicircular photographic paper fixed on the upper end face and the lower end face of the frame, and the two pieces of photographic paper are staggered by 90 degrees around the axis of the cylindrical frame. When the radiuses of the light spots on the two pieces of photographic paper are consistent, the symmetry plane between the two pieces of photographic paper is the plane where the focal point of the laser beam is located, and the device can measure the focal point more accurately, and is simple in structure, convenient to operate, low in manufacturing cost and high in adaptability when serving as an auxiliary device.

Description

TECHNICAL FIELD

[0001] The utility model relates to laser equipment technical field especially relates to a laser auxiliary focusing device. BACKGROUND

[0002] In order to obtain higher energy density, laser equipment is used for industrial processing, often will adopt the form of focusing, especially in the demand high energy, high precision production and processing occasion, the existing automatic focusing device, for example visual system, cost is higher, the whole set of equipment space volume is bigger, will increase the difficulty of the design of whole integrated production and processing system, therefore urgently needs a low -cost, small volume, convenient operation's auxiliary focusing device. SUMMARY

[0003] The utility model discloses a manual focusing laser beam focusing device to solve the technical problem in the above background technology.

[0004] To achieve the above object, the utility model provides the following technical scheme: a kind of manual focusing laser beam focusing device, device core part is cylindrical structure frame, there is clamping groove structure on the upper end surface and lower end surface of frame, can embed one half circular photo paper respectively, upper end surface photo paper and lower end surface photo paper are staggered 90 ° around the axis of cylindrical frame in the angle of view, two half circular photo papers are drawn with vertical scale line along straight line, middle positioning ring block is arranged in the upper part of middle part of frame side, the lower surface of middle positioning ring block is the mirror surface symmetry center surface of upper end surface and lower end surface of frame, cylindrical structure frame is supported by linear telescopic prop and base, can move up and down along linear telescopic prop, base is overall fanning, the side of smaller radius is adjacent to workpiece, its radius is less than the cross section radius of cylindrical structure frame, the upper surface of the side of larger radius has annular counterweight frame, for placing counterweight, prevent tilting.

[0005] Further, the cylindrical structure frame can also be a rectangular parallelepiped, prism, circular truncated cone or truncated prism structure frame; the moving platform of the support frame can also be a two-dimensional or three-dimensional moving platform.

[0006] Further, the structure frame can be replaced by a solid transparent glass block, and the photo paper is attached to the upper and lower end surfaces of the glass block.

[0007] Further, the scale line on the half circular photo paper can also be a circular ring scale line.

[0008] Further, the photo paper can also be other materials that can change color under the influence of laser.

[0009] Compared with the prior art, the utility model has the beneficial effects that:

[0010] The cross-sectional area of the laser beam near the focal point changes little, and the commonly used single-phase paper for measuring the focal point has low accuracy, and the double-phase paper focal point measuring device provided by the utility model can measure the focal point position more accurately; the device structure is relatively simple, the manufacturing cost is low, the operation is simple, and the device is convenient to disassemble and assemble; the device has small space volume, and is not easy to block the laser equipment, the workpiece to be processed and the tooling, and is suitable for modularization and customization system. BRIEF DESCRIPTION OF DRAWINGS

[0011] The accompanying drawings are used to provide a further understanding of the utility model, and constitute a part of the specification, and are used to explain the utility model together with embodiments of the utility model, and do not constitute a limitation to the utility model. In the drawings:

[0012] Figure 1 It is a structural schematic diagram of the utility model.

[0013] In the drawing: 1, upper end face; 2, middle positioning annular block; 3, lower end face; 4, telescopic support; 5, base; 6, counterweight frame; 11, upper end face photo paper; 12, lower end face photo paper; 21, laser incidence direction. DETAILED DESCRIPTION

[0014] In order to make the purpose, technical scheme and advantages of the technical scheme of the utility model more clear, the technical scheme of the embodiments of the utility model will be clearly and completely described in the following with reference to the drawings of the embodiments of the utility model. The same reference signs in the drawings represent the same parts. It should be noted that the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the described embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0015] Please refer to Figure 1 The utility model provides a kind of manual focusing laser beam focusing device, and the core part of device is cylindrical structure frame, there is clamping groove structure on the upper end face 1 and lower end face 3 of frame, can be embedded one half-round photo paper respectively, upper end face photo paper 11 and lower end face photo paper 12 are staggered 90 ° around the axis of cylindrical frame in overhead angle, two half-round photo papers are drawn with vertical scale line along straight line, middle positioning annular block 2 is arranged in upper part in the middle part of frame side, the lower surface of middle positioning annular block 2 is the mirror surface symmetry center surface of the upper end face 1 and lower end face 3 of frame, cylindrical structure frame is supported by linear telescopic support 4 and base 5, can be moved up and down along linear telescopic support 4, base 5 is in the form of fan as a whole, the side with small radius is adjacent to workpiece, and its radius is less than the cross-sectional radius of cylindrical structure frame, and the upper surface of the side with large radius has annular counterweight frame 6, for placing counterweight, to prevent tilting.

[0016] The utility model relates to device's operation step is: the work piece and the device are placed on the platform surface, fixed device base 5, through telescopic support 4 upper and lower movement frame, make the lower surface of intermediate positioning ring block 2 and work piece upper surface close, open laser and move the platform up and down, make the laser spot radius on two photos consistent, the work piece upper surface and the horizontal plane where laser focal point coincides at this time.

[0017] The utility model discloses utilize the characteristic that focusing laser beam is along the focal point symmetry, measure and calculate the radius that laser beam forms the spot on two photos, when the radius of spot on two photos is consistent, the symmetry plane between two photos is the plane where laser beam focal point is, the utility model relates to device determination focal point is more accurate, and simple structure, convenient operation, low manufacturing cost, as the auxiliary device adaptability is high.

[0018] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. The skilled person in the art should understand that the utility model is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model can have various changes and improvements, and these changes and improvements fall within the scope of the claimed utility model. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A manually focusing laser beam focusing device, characterized in that: The core part of the device is a cylindrical frame structure. The upper end face (1) and lower end face (3) of the frame have a slot structure, which can be used to embed a semi-circular photographic paper. The upper end face photographic paper (11) and the lower end face photographic paper (12) are offset by 90° around the axis of the cylindrical frame from the top view. Both semi-circular photographic papers have vertical scale lines drawn along a straight line. The middle part of the side of the frame is provided with a middle positioning ring block (2) slightly above. The lower surface of the middle positioning ring block (2) is the mirror symmetry center surface of the upper end face (1) and the lower end face (3) of the frame. The cylindrical frame structure is supported by a linear telescopic support column (4) and a base (5). It can move up and down along the linear telescopic support column (4). The base (5) is fan-shaped. The side with the smaller radius is adjacent to the workpiece. Its radius is smaller than the cross-sectional radius of the cylindrical frame structure. The upper surface of the side with the larger radius has a circular counterweight frame (6) for placing counterweights to prevent tipping.

2. The manual focusing laser beam focusing device according to claim 1, characterized in that: The cylindrical structural frame can also be a cuboid, prism, frustum, or pyramidal structural frame; the moving platform supporting the frame can also be a two-dimensional or three-dimensional moving platform.

3. The manual focusing laser beam focusing device according to claim 2, characterized in that: The structural frame can be replaced by a solid transparent glass block, with photographic paper pasted on the upper and lower surfaces of the glass block.

4. The manual focusing laser beam focusing device according to claim 3, characterized in that: The scale lines on the semi-circular photographic paper can also be circular scale lines.

5. A manual focusing laser beam focusing device according to claim 4, characterized in that: The photographic paper can also be other materials whose color can be changed by laser.

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