CN210243941U - Installation structure and installation tool for stress-free laser optical system - Google Patents
Installation structure and installation tool for stress-free laser optical system Download PDFInfo
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- CN210243941U CN210243941U CN201921093463.1U CN201921093463U CN210243941U CN 210243941 U CN210243941 U CN 210243941U CN 201921093463 U CN201921093463 U CN 201921093463U CN 210243941 U CN210243941 U CN 210243941U
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Abstract
The utility model discloses a mounting structure and a mounting tool of an unstressed laser optical system, which comprises an optical lens and a lens base, and also comprises a nylon tap screw; the optical lens is arranged in the lens base, a threaded hole is arranged on the lens base, and a nylon head screw penetrates through the threaded hole and is connected with the side wall of the optical lens. The mounting tool comprises a cross rod and two vertical rods with the same structure, wherein one end of each vertical rod is a connecting end, the other end of each vertical rod is a working end, the connecting ends of the vertical rods are provided with lantern rings, the vertical rods are sleeved on the cross rod through lantern ring sleeves and fixed through bolts penetrating through the side walls of the lantern rings, and the two vertical rods are located on the same side of the cross rod. The utility model discloses the mounting structure has greatly reduced stress and the eccentric centre that optical device brought because of the assembly, and the buddhist nun tap screw of initiative adjustment mechanism can compensate the error that the course of working brought; the mounting tool is reasonable in structure, stress caused by torsion when each set of lens is assembled can be well guaranteed to be consistent, the assembling effect is good, and the rate of finished products is greatly improved.
Description
Technical Field
The utility model relates to a stress-free laser optical system mounting structure and mounting tool belongs to laser optical system installation field.
Background
With the continuous development of laser technology, a large number of laser technologies are applied to industrial production and processing. With the rise of laser micromachining in semiconductor, electronic, and precision cutting industries, the precision requirement for various high-end laser lenses is continuously increasing,
at present, the laser processing technology is in an increasingly important position in the modern industrial field, and the processing technology is developed towards high precision, low power consumption and high efficiency. The performance requirements on the laser device are higher and higher, and the performance of the laser device is greatly influenced by the stress and the center deviation brought by the current optical assembly.
In high-end laser lens structure, the lens generally adopts materials such as glass for place the mirror seat of lens, generally adopts metal material, and the material of the two is different, and coefficient of thermal expansion does not match, and the deformation of production is different, forms pressure or torsion between lens and mirror seat faying face promptly, can lead to the lens to produce thermal stress, directly can influence the performance of camera lens. The existing lens assembly mostly adopts manual assembly, when the lens is fixed in the lens base by a tool, because the torque force cannot be controlled, the force used by each person is different, the pressure or torque force formed between the joint surfaces of the lens and the lens base cannot be controlled, and the lens is difficult to keep consistent when in use.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems that the sizes of focusing light spots are not consistent and the light spots are deformed due to the generation of stress and center deviation in the laser lens assembling process, the utility model provides an installation structure of a stress-free laser optical system; in order to solve the problem that the pressure or the torsion between the combining surfaces of the lens and the lens base is uncontrollable, the utility model provides a mounting tool of a stress-free laser optical system.
For solving the technical problem, the utility model discloses the technical scheme who adopts as follows:
a mounting structure of a stress-free laser optical system comprises an optical lens, a lens base and a nylon tap screw; the optical lens is arranged in the lens base, a threaded hole is arranged on the lens base, and a nylon head screw penetrates through the threaded hole and is connected with the side wall of the optical lens.
The mounting structure eliminates the lateral stress and the center deviation of the optical lens by adjusting the nylon tap screw.
In order to further reduce the excircle stress and the center deviation, the periphery of the optical lens is provided with an adjusting ring, an adjusting gap of 0.5 +/-1 mm is reserved between the adjusting ring and the inner side wall of the lens base, and a nylon head screw penetrates through a threaded hole and is connected with the peripheral side wall of the adjusting ring. The center deviation is actively adjusted by using the nylon tap screw, the excircle stress and the center deviation are reduced, and the machining precision of a gold workpiece can be reduced.
In order to further improve the stability of the optical system, the adjusting ring is fixed by a pressing ring.
In order to ensure the size consistency and roundness of the light spot, a buffer ring is arranged between the pressing ring and the optical lens. This eliminates the stress that the metal workpiece puts on the optical member.
In order to ensure the use performance of the optical system, such as use strength, stability and the like, the lens base, the pressing ring and the adjusting ring are all made of 6061 aluminum.
Preferably, Polytetrafluoroethylene (PTFE) is used for the buffer ring.
When the distance between two adjacent optical lenses is less than 5mm, a spacing ring is arranged between the two adjacent optical lenses. The spacer ring is made of H62 oxygen-free copper.
The stress-free laser optical system mounting structure greatly reduces the stress caused by the assembly of the optical device, and the active adjusting mechanism can make up for the error caused by the processing process.
The protection window of the laser optical system is fixed through the pressing ring, and an O-shaped ring is arranged between the protection window and the pressing ring. The stress of the pressing ring on the protection window is eliminated through the O-shaped ring.
The utility model provides a stress-free laser optical system mounting tool, includes horizontal pole and two montants that the structure is the same, and the one end of montant is the link, the other end is the work end, and the link of montant is equipped with the lantern ring, and the montant overlaps through the lantern ring cover and establishes on the horizontal pole and through the bolt fastening who passes the lantern ring lateral wall, and two montants are located same one side of horizontal pole.
The mounting tool is mainly used for mounting the pressing ring used by the laser optical system, the pressing ring is preferably in threaded connection with the inner side wall of the mirror base, two mounting holes which are symmetrically arranged are formed in the end face of the pressing ring, during assembly, the bolts are loosened to adjust the positions of the vertical rods on the cross rod, so that the working ends of the two vertical rods are just inserted into the two mounting holes, and then the pressing ring is assembled in a mode of rotating the cross rod.
In order to realize accurate control of the torsion, the installation tool of the stress-free laser optical system further comprises a torsion presetting assembly, the torsion presetting assembly is connected to the center of the transverse rod in the length direction through a clamp, the two vertical rods are respectively positioned on two sides of the central position of the transverse rod, and the distance from the two vertical rods to the central position of the transverse rod is equal. Can predetermine the subassembly through torsion and predetermine the torsion size when the assembly for assembly torsion can be controlled at reasonable scope, reduces the stress influence that assembly torsion produced to the lens, and can guarantee the camera lens performance uniformity.
In order to perform real-time monitoring on the torsion, the installation tool of the stress-free laser optical system further comprises a torsion meter, and the torsion meter is connected with the torsion presetting assembly. The torsion presetting assembly detects torsion moment through the torsion sensor and converts the torsion moment into an electric signal, and then the digital display tube of the torsion meter displays the torsion, and the torsion meter can monitor the assembly torsion value in real time.
The preset torque force component can set different torque force numerical values according to the specification of the assembly lens, and when the torque force is larger than the preset value during assembly, prompt can be generated.
The torsion meter can display the current assembly torsion in real time, and can give an alarm when the current assembly torsion exceeds the preset torsion.
The torsion assembly is preferably a torsion assembly N20 LTDK; the torsion meter is preferably a torsion meter RSX-30 NLT.
In order to improve the stability of installation, the end part of the working end on the vertical rod is of a straight flat structure. The installation on the terminal surface of clamping ring is also "a" style of calligraphy.
The technology not mentioned in the present invention refers to the prior art.
The stress-free laser optical system mounting structure greatly reduces stress and center deviation caused by assembly of optical devices, and the nylon tap screw of the active adjusting mechanism can compensate errors caused by the processing process; the utility model discloses stress-free laser optical system mounting tool, rational in infrastructure, the stress that every set of camera lens of assurance that can be fine arouses by torsion when the assembly is unanimous, and assembly effect is good, and the yield improves greatly.
Drawings
Fig. 1 is a schematic view of a mounting structure of an unstressed laser optical system in embodiment 1;
FIG. 2 is an interference diagram of a mounting structure of an unstressed laser optical system in example 1;
FIG. 3 is an interference pattern in comparative example 1;
FIG. 4 is a schematic structural diagram of a mounting tool for an unstressed laser optical system;
FIG. 5 is an interference pattern in example 2;
FIG. 6 is the laser marking results of example 2 using a conventional tool set-up;
FIG. 7 shows the result of laser marking using the installation tool of the stress-free laser optical system of the present invention in example 2;
in the figure, 1 is a first lens, 2 is a second lens, 3 is a third lens, 4 is a protection window, 5 is a nylon head screw, 6 is a spacer ring, 7 is a first adjusting ring, 8 is a first buffer ring, 9 is a first pressing ring, 10 is a lens base, 11 is a second pressing ring, 12 is an O-ring, 13 is a third pressing ring, 14 is a second adjusting ring, 15 is a second buffer ring, 16 is a cross bar, 17 is a vertical bar, 18 is a torsion preset component, and 19 is a torsion meter.
Detailed Description
For a better understanding of the present invention, the following examples are provided to further illustrate the present invention, but the present invention is not limited to the following examples.
Example 1
As shown in fig. 1, the optical system mounting structure of three lenses and one protection window includes a first lens, a second lens, a third lens and a protection window sequentially arranged along the incident direction of light; the first lens is specially arranged in the lens base and is abutted against the side wall of the first lens by penetrating through the lens base, and the lateral stress and the center deviation of the first lens are eliminated by adjusting a nylon tap screw; a first adjusting ring is arranged on the periphery of the second lens, an adjusting gap of 0.5mm is reserved between the first adjusting ring and the inner side wall of the lens base, a nylon head screw penetrates through the threaded hole and abuts against the outer peripheral side wall of the first adjusting ring, a spacing ring is arranged between the first lens and the second lens, the first adjusting ring is fixed through a first pressing ring, and a first buffer ring is arranged between the first pressing ring and the second lens; a second adjusting ring is arranged on the periphery of the third lens, an adjusting gap of 0.5mm is reserved between the second adjusting ring and the inner side wall of the lens base, a nylon head screw penetrates through the threaded hole and abuts against the outer peripheral side wall of the second adjusting ring, the second adjusting ring is fixed through a third pressing ring, and a second buffer ring is arranged between the third pressing ring and the third lens; the protection window ring is fixed through the second clamping ring, and an O-shaped ring is arranged between the second clamping ring and the protection window.
The mounting method of the mounting structure comprises the following steps: firstly, the first lens is arranged in the lens base, a nylon screw is designed for the first lens, the lateral stress and the center deviation of the first lens are eliminated by adjusting the nylon screw, and after the first lens is added, the concentricity of the first lens and the lens base can be actively adjusted by a centering instrument detection device, so that the center deviation of the first lens and the lens base is ensured to be less than 1'.
Then pack the space ring into the microscope base, adding the second lens, first regulation circle and nylon head screw have been designed here, through the stress of nylon head screw elimination second lens side, combine first regulation circle again, can carry out the eccentric regulation in center to the second lens, can guarantee like this that preceding two lenses are under the unstressed condition, holistic center partially can reach below 1' by the fine cooperation, pack first buffer ring and first clamping ring into the lens cone again, the effect of first buffer ring just reduces the stress of first clamping ring to the second lens this moment, make first clamping ring not cause the extrusion to the second lens when fixed second lens, also avoid the second lens to produce deformation.
And then, the third lens is arranged in the lens barrel, a nylon head screw is also designed on the side surface of the third lens to eliminate the stress and the center deviation of the side surface of the third lens, a second buffer ring is added behind the third lens, the second buffer ring also has the function of avoiding the stress generated by extrusion of a rear pressing ring on the third lens, so that the overall effect is influenced, a second adjusting ring is also designed on the third lens, the center deviation of the third lens is adjusted through the second adjusting ring, and the overall center deviation of the front three lenses is ensured to be less than 1'.
And finally, adding a protection window, and eliminating the stress of the second pressing ring on the protection window by adopting a mode of adding the second pressing ring on the back of the protection window through the O-shaped ring. The entire system was stress relieved for all lenses.
The lens base, the pressing ring and the adjusting ring are all made of 6061 aluminum; the material of the buffer ring is polytetrafluoroethylene; the material of the space ring is H62 oxygen-free copper.
Comparative example 1
The difference from example 1 is: the first lens, the second lens, the third lens and the protection window are all fixed through the pressing ring, no adjusting ring, no buffer ring and no spacing ring are arranged, and no nylon tap nail is designed on the side surface of each lens.
In the comparative example 1, the pressing ring is directly pressed on the lens, and the nylon pin is not designed on the side surface, so that the lens surface shape can generate stress deformation due to the design, the tested interference is as shown in figure 3, and the interference fringes are seriously deformed and irregular; in contrast, in example 1, the interference pattern is designed by a stress-free structure as shown in fig. 2, and the interference fringes are regular and have no deformation.
Example 2
As shown in fig. 4, an installation tool for stress-free laser optical systems comprises a wrench, wherein the wrench comprises a cross rod and two vertical rods with the same structure, one end of each vertical rod is a connecting end, the other end of each vertical rod is a working end, the end part of each working end is a straight flat structure, the connecting end of each vertical rod is provided with a lantern ring, the vertical rods are sleeved on the cross rod through lantern ring sleeves and fixed through bolts penetrating through the side walls of the lantern rings, and the two vertical rods are located on the same side of the cross rod.
The torsion presetting assembly is connected to the center of the cross rod in the length direction through the clamp, the two vertical rods are respectively located on two sides of the center of the cross rod, and the distance from the two vertical rods to the center of the cross rod is equal. The torsion meter is connected with the torsion presetting assembly and displays the torsion in real time. A torque value is set on the torque force presetting assembly, when the clamping ring is screwed down, when the torque value is larger than the pressure of a spring in the torque force presetting assembly, a disjointing effect can be generated, the wrench can make a tower clamping sound, and the torque force applied to the clamping ring is fixed every time.
The torsion preset component is a torsion component N20LTDK, the torsion setting range is 4-20kgf.cm, and the minimum resolution is 0.1kgf.cm (10kgf.com is approximately equal to 1 N.m); the torsion meter is a torsion meter RSX-30NLT, the torque display range is 1-30N.m, and the resolution is 0.1 N.m.
The mounting tool is mainly used for mounting a pressing ring used by a laser optical system, the pressing ring is in threaded connection with the inner side wall of the mirror base, and two mounting holes which are symmetrically arranged are formed in the end face of the pressing ring. During installation, the optimal torsion of each pressing ring is determined as the preset torsion by repeated debugging and the use of a torsion meter RSX-30NLT, and then batch production is completed.
The pressing ring in the embodiment 1 is installed by the existing conventional tool and method, the stress is eliminated mainly by the arrangement and adjustment of a nylon screw, an adjusting ring, a buffering ring and the like, the structure in the comparative example 1 which is fixed by only the pressing ring is taken as an example in the embodiment, the effect of the installation tool on the stress elimination is illustrated, and fig. 3 shows that the interference of the installation test by the existing conventional tool is interfered, and the interference fringes are seriously deformed and irregular; FIG. 5 is an interference test using the above-described unstressed laser optical system installation tool, and the interference test using the structure of example 1 in combination with the above-described unstressed laser optical system installation tool is identical to that of FIG. 5 and thus is not repeated; FIG. 6 shows the result of laser marking using a conventional tool, with a marking line width test of 0.0329 mm; fig. 7 shows the result of laser marking using the above-described installation tool for the unstressed laser optical system, and the result of the marking line width test is 0.0244 mm.
Claims (10)
1. The utility model provides a non-stress laser optical system mounting structure, includes optical lens and microscope base, its characterized in that: the nylon tap screw is also included; the optical lens is arranged in the lens base, a threaded hole is arranged on the lens base, and a nylon head screw penetrates through the threaded hole and is connected with the side wall of the optical lens.
2. The mounting structure of a stress-free laser optical system according to claim 1, wherein: the periphery of the optical lens is provided with an adjusting ring, an adjusting gap of 0.5 +/-1 mm is reserved between the adjusting ring and the inner side wall of the lens base, and a nylon head screw penetrates through the threaded hole and is connected with the peripheral side wall of the adjusting ring.
3. The mounting structure of a stress-free laser optical system according to claim 2, wherein: the adjusting ring is fixed through the pressing ring.
4. The mounting structure of a stress-free laser optical system according to claim 3, wherein: a buffer ring is arranged between the pressing ring and the optical lens.
5. The mounting structure of a stress-free laser optical system according to claim 4, wherein: the lens base, the pressing ring and the adjusting ring are all made of 6061 aluminum; the material of the buffer ring is polytetrafluoroethylene.
6. The mounting structure for a stress-free laser optical system according to any one of claims 1 to 5, wherein: when the distance between two adjacent optical lenses is less than 5mm, a spacing ring is arranged between the two adjacent optical lenses, and the material of the spacing ring is H62 oxygen-free copper; the protection window of the laser optical system is fixed through the pressing ring, and an O-shaped ring is arranged between the protection window and the pressing ring.
7. An unstressed laser optical system installation tool is characterized in that: including horizontal pole and two montants that the structure is the same, the one end of montant is the link, the other end is the work end, and the link of montant is equipped with the lantern ring, and the montant overlaps through the lantern ring cover and establishes on the horizontal pole, and through the bolt fastening who passes the lantern ring lateral wall, two montants lie in same one side of horizontal pole.
8. The stress-free laser optical system installation tool of claim 7, wherein: the torsion presetting assembly is connected to the center of the transverse rod in the length direction through a clamp, the two vertical rods are respectively located on two sides of the central position of the transverse rod, and the distance from the two vertical rods to the central position of the transverse rod is equal.
9. The stress-free laser optical system installation tool of claim 8, wherein: the torsion meter is connected with the torsion presetting assembly.
10. The stress-free laser optical system installation tool of any one of claims 7 to 9, wherein: the end part of the working end on the vertical rod is of a straight-line-shaped flat structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921093463.1U CN210243941U (en) | 2019-07-12 | 2019-07-12 | Installation structure and installation tool for stress-free laser optical system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921093463.1U CN210243941U (en) | 2019-07-12 | 2019-07-12 | Installation structure and installation tool for stress-free laser optical system |
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| CN210243941U true CN210243941U (en) | 2020-04-03 |
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| CN201921093463.1U Active CN210243941U (en) | 2019-07-12 | 2019-07-12 | Installation structure and installation tool for stress-free laser optical system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111730545A (en) * | 2020-06-23 | 2020-10-02 | 中国科学院西安光学精密机械研究所 | Adjustable pressing ring torque fastening device and method |
| CN114594561A (en) * | 2022-01-11 | 2022-06-07 | 智慧星空(上海)工程技术有限公司 | Lens stress-free adjusting device |
-
2019
- 2019-07-12 CN CN201921093463.1U patent/CN210243941U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111730545A (en) * | 2020-06-23 | 2020-10-02 | 中国科学院西安光学精密机械研究所 | Adjustable pressing ring torque fastening device and method |
| CN111730545B (en) * | 2020-06-23 | 2024-01-05 | 中国科学院西安光学精密机械研究所 | Adjustable clamping ring moment fastening device and method |
| CN114594561A (en) * | 2022-01-11 | 2022-06-07 | 智慧星空(上海)工程技术有限公司 | Lens stress-free adjusting device |
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