Light beam emitting end adjusting mechanism and assembling method and application thereof

Abstract

The invention relates to a light beam transmitting end adjusting mechanism and an assembling method and application thereof. The mechanism comprises a fast beam head 1, a double-eccentric sleeve pressing ring 2, an eccentric sleeve I 3, an eccentric sleeve II 4, an eccentric sleeve III 5, a gland 6, a clip 7, a plastic sleeve 8, a shell 9, a collimating mirror bracket 10, a collimating mirror 11, a fast reflecting mirror bracket 12, a fast reflecting mirror 13 and the like. During assembly, firstly, the fast beam head 1 is fixed on the eccentric bushing I3, then the eccentric bushing I3 and the eccentric bushing II4 are installed on the eccentric bushing III 5 in a clearance fit mode, the eccentric bushing I3 and the eccentric bushing II4 are rotated, and the relative position of the collimating mirror 11 is moved to adjust the beam until the parallelism of the beam and the system performance reach design indexes. And finally, the eccentric bushing I3 and the eccentric bushing II4 are tightly pressed by using the double-eccentric bushing pressing ring 2. The device has the advantages of being simple in structure, convenient to operate and the like, it can be ensured that the adjusting range of the fast beam head is not limited through the double-eccentric design, and the system performance is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of optical and mechanical technology, in particular to a light beam emitting end adjusting mechanism and its assembling method and application. BACKGROUND

[0002] The adjustment mode of the existing high-power laser beam system is generally as follows: first, optical devices are fixed at respective positions, and then a collimating mirror is adjusted for optimization. However, this adjustment mode cannot correct the production and assembly errors of structural parts, which may have a negative impact on the performance of the high-power beam system, and it is difficult to meet the system design index requirements by adjusting the collimating mirror only, or although the design index requirements can be met, more or higher laser energy is required, that is, there are problems of low beam quality and low utilization rate.

[0003] In summary, there is an urgent need to develop a convenient adjusting mechanism to neutralize the production and assembly errors in the system and improve the performance of the system beam. SUMMARY

[0004] The main purpose of the present application is to solve the above-mentioned problems existing in the prior art, and to provide a light beam emitting end adjusting mechanism. The adjusting mechanism comprises a light beam emitting end, an eccentric sleeve I 3, an eccentric sleeve II 4, and an eccentric sleeve III 5. The light beam emitting end is coaxially fixed on the eccentric sleeve I 3, the eccentric sleeve II 4 is sleeved on the eccentric sleeve I 3 in a clearance fit manner, and the eccentric sleeve III 5 is sleeved on the eccentric sleeve II 4 in a clearance fit manner. Rotating the eccentric sleeve I 3 and the eccentric sleeve II 4 can drive the light beam emitting end to move at any position in the plane.

[0005] In the above-mentioned scheme, the light beam emitting end comprises a fast beam head 1 and a light source. The light source can output light beams such as laser beams, polarized light beams, natural light beams, or infrared light beams, etc. after being connected with the fast beam head 1.

[0006] In the above-mentioned scheme, the eccentric sleeve I 3 comprises a circular ring-shaped base with a larger diameter and a circular tube with a smaller diameter. The circular ring-shaped base and the circular tube have concentric internal through holes, and the outer wall of the circular ring-shaped base is eccentric to the outer wall of the circular tube.

[0007] In the above-mentioned scheme, a clamping groove 14 is symmetrically arranged on the end face of the circular ring-shaped base of the eccentric sleeve I 3 along the circumference, and a screw hole 15 is symmetrically arranged on the end face of the circular tube along the circumference. The light beam emitting end (fast beam head 1) is fixedly connected with the eccentric sleeve I 3 through bolts and the screw hole 15.

[0008] In the above-mentioned scheme, the eccentric sleeve II 4 comprises a circular ring and a baffle with a circular hole on one side end face of the circular ring. The outer wall of the circular ring is concentric with the circular hole on the baffle, and the inner wall of the circular ring is eccentric. The eccentric sleeve II 4 is sleeved on the circular ring-shaped base of the eccentric sleeve II 4 in a clearance fit manner.

[0009] In the above scheme, the baffle of eccentric sleeve II 4 is provided with a matched clamping groove in a circumferential symmetry, and the distribution and number of clamping grooves on eccentric sleeve I 3 and eccentric sleeve II 4 are the same. By clamping the matched clamping forceps into the corresponding clamping groove, eccentric sleeve I 3 and eccentric sleeve II 4 can be rotated respectively, and then the position of the fast light beam head 1 can be adjusted.

[0010] In the above scheme, the eccentric sleeve III 5 includes a frame, an end face ring and a matched double eccentric sleeve pressing ring 2. A through hole is arranged on the frame, and the end face ring is fixed on the frame and faces the through hole. A threaded hole with a larger diameter is arranged on the outer side of the inner surface of the end face ring, and a through hole with a smaller diameter is arranged on the inner side of the inner surface of the end face ring. A matched thread is arranged on the outer surface of the double eccentric sleeve pressing ring 2. Eccentric sleeve I 3, eccentric sleeve II 4 and eccentric sleeve III 5 are assembled together in a clearance fit, and eccentric sleeve II 4 is located in the through hole on the inner side of the inner surface of the end face ring. After adjustment, the double eccentric sleeve pressing ring 2 is used to press eccentric sleeve I 3 and eccentric sleeve II 4 tightly in the end face ring of eccentric sleeve III 5, and the double eccentric sleeve pressing ring 2 and the end face ring of eccentric sleeve III 5 are fixed and locked by the thread therebetween.

[0011] In the above scheme, the mechanism further includes a collimating mirror group and a fast mirror group. The collimating mirror group and the fast mirror group are fixed in the frame of eccentric sleeve III 5, and the light beam emitting end, the collimating mirror group and the fast mirror group are coaxially arranged in sequence.

[0012] In the above scheme, the mechanism further includes a housing 9 and a sealing and fixing assembly. A through hole is formed on the end surface of the housing 9, the housing 9 is fixedly connected with the eccentric sleeve III 5, the light beam emitting end passes through the through hole on the housing 9, and the sealing and fixing assembly is sleeved on the light beam emitting end (fast light beam head 1) and fixedly connected with the housing 9.

[0013] In the above scheme, the sealing and fixing assembly includes a gland 6, a clamp 7 and a hollow I-shaped sleeve. The hollow I-shaped sleeve is sleeved on the light beam emitting end (fast light beam head 1), bolts pass through the connecting holes on the gland 6 and the screw holes on the housing 9 in sequence to fix them together, and finally the clamp 7 is clamped to the hollow I-shaped sleeve.

[0014] The second object of the present application is to provide a use method of the above light beam emitting end adjusting mechanism, which comprises the following steps: assembling the light beam emitting end, eccentric sleeve I 3, eccentric sleeve II 4 and eccentric sleeve III 5 together, rotating eccentric sleeve I 3 and eccentric sleeve II 4 to drive the light beam emitting end to move eccentrically in a plane, and fixing and locking eccentric sleeve I 3 and eccentric sleeve II 4 when the light beam emitting end moves to a target position.

[0015] In the above scheme, the collimating mirror group needs to be adjusted in the process of rotating the eccentric sleeve I 3 and the eccentric sleeve II 4, and the operations of rotating the eccentric sleeve I 3 and the eccentric sleeve II 4 and adjusting the collimating mirror group are repeatedly performed until the light beam parallelism and the system performance reach the standard, and finally the shell 9 and the sealing fixing assembly are installed.

[0016] The third object of the present application is to provide the application of the above light beam emitting end adjusting mechanism in the adjustment of various light beams such as laser beams and infrared light beams.

[0017] Compared with the prior art, the progress of the present application mainly lies in the following aspects: (1) the whole adjusting mechanism has a simple structure, high reliability and strong adjusting capacity; (2) when the production and assembly errors of the structural parts are large, the adjusting mechanism of the present application can be quickly adjusted to the right position, and the problem that the light beam does not meet the system index requirements caused by adjusting only the collimating mirror is overcome; (3) the double eccentric adjusting mode can make the adjustment range of the QBH unlimited, and ensure the light beam parallelism, laser energy and the performance of the system. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a perspective view of the light beam emitting end adjusting mechanism of the present application.

[0019] Figure 2 It is an exploded view of the light beam emitting end adjusting mechanism of the present application. Figure 1

[0020] Figure 3 It is a structure schematic view of the eccentric sleeve I.

[0021] Figure 4 It is a structure schematic view of the eccentric sleeve II.

[0022] Figure 5 It is a side sectional view of the eccentric sleeve III.

[0023] Figure 6 It is a perspective view of the shell.

[0024] Figure 7 It is a sectional view of the light beam emitting end after magnification.

[0025] Figure 8 It is a principle view of the eccentric adjustment of the present application.

[0026] The reference signs: 1-fast light beam head, 2-double eccentric sleeve pressing ring, 3-eccentric sleeve I, 4-eccentric sleeve II, 5-eccentric sleeve III, 6-pressing cover, 7-clamp, 8-plastic sleeve, 9-shell, 10-collimating mirror support, 11-collimating mirror, 12-fast mirror support, 13-fast mirror, 14-clamp slot, 15-screw hole. DETAILED DESCRIPTION

[0027] ​For those skilled in the art to fully understand the technical solutions and beneficial effects of the present application, the following will be described in detail in combination with specific embodiments and drawings. It is emphasized that the following embodiments are only a part of the numerous embodiments of the present application, in addition to this, the present application can have many other embodiments, and any simple improvement based on these embodiments will fall within the protection scope of the present application.

[0028] The light beam emitting end adjusting mechanism provided by the present application is mainly used for adjusting various light beams such as laser beams, and can neutralize the adverse effects caused by production and assembly errors of structural parts through eccentric principle, so as to ensure that the light beam meets the system requirements.

[0029] The structure of the light beam emitting end adjusting mechanism is shown in Figures 1-2 The light beam emitting end adjusting mechanism mainly comprises a quick beam head 1, a double eccentric sleeve pressing ring 2, an eccentric sleeve I 3, an eccentric sleeve II 4, an eccentric sleeve III 5, a gland 6, a clamp 7, a plastic sleeve 8, a shell 9, a collimator holder 10, a collimator 11, a fast mirror holder 12, a fast mirror 13, and the like. The collimator 11 is fixed on the collimator holder 10 to form a collimator group. The fast mirror 13 is fixed on the fast mirror holder 12 to form a fast mirror group. The gland 6, the clamp 7, and the plastic sleeve 8 form a sealing assembly. The quick beam head 1 is installed at the left end of the adjusting mechanism and is fixed and sealed by the sealing assembly. The collimator group is installed in the middle of the adjusting mechanism. The fast mirror group is installed at the right end of the adjusting mechanism. The three are arranged along the optical axis. The laser beam emitted by the quick beam head 1 passes through the collimator group and the fast mirror group in turn and is emitted outward.

[0030] In some other embodiments of the present application, the collimator group and the fast mirror group can be replaced by other at least one optical element in whole or in part, such as a filter group, a lens group, an imaging module, a laser range finder, and the like, so as to expand the application range and application scenarios of the adjusting mechanism.

[0031] The quick beam head 1 (QBH, Quick Beam Head) is mainly used for emitting a laser beam. After the laser beam passes through the collimator group, it is reflected by the fast mirror group to realize imaging, ranging, and the like. The quick beam head 1 is in the shape of a cylinder, and a circular ring is protruded on the surface thereof. Screw holes and grooves are arranged on the circular ring.

[0032] The double eccentric sleeve pressing ring 2 is in the shape of a circular ring and has no eccentricity in the inner and outer diameters (i.e., coaxial). It is mainly used for pressing the eccentric sleeve I 3 and the eccentric sleeve II 4 in the stepped mounting hole of the left end surface of the eccentric sleeve III 5. Specifically, the double eccentric sleeve pressing ring 2 is fixedly connected with the inner threads in the stepped mounting hole of the eccentric sleeve III 5 through the outer threads.

[0033] The structure of the eccentric sleeve I 3 is shown in Figure 3As shown in the drawings, the upper left drawing is a front view, the upper right drawing is a side view, and the lower drawing is a perspective view. The eccentric sleeve I 3 is a hollow tube with a boss structure, including a circular ring-shaped base with a larger diameter and a circular tube with a smaller diameter. The outer surface of the circular ring-shaped base is assembled with the eccentric sleeve II 4 in a clearance fit (i.e., the eccentric sleeve II 4 is assembled on the circular ring-shaped base of the eccentric sleeve I 3). Two (or 3-6) clamping grooves 14 are symmetrically arranged on the left end surface of the circular ring-shaped base. Two (or 3-6) screw holes 15 for fixing the fast light beam head 1 are symmetrically arranged on the left end surface of the circular tube.

[0034] As shown in the drawings, Figure 3 The diameter of the internal through hole of the eccentric sleeve I 3 (i.e., D3), the diameter of the circle where the screw hole 15 is located (D4), and the outer diameter of the circular tube (D5) are concentric, and the outer diameter of the circular ring-shaped base (i.e., D1) is eccentric, with an eccentric distance of X1. That is, the circular ring-shaped base and the circular tube on the eccentric sleeve I 3 have concentric internal through holes, but their outer walls are eccentric (i.e., eccentric).

[0035] The structure of the eccentric sleeve II 4 is shown in the drawings, Figure 4 The upper left drawing is a front view, the upper right drawing is a side view, and the lower drawing is a perspective view. The main body of the eccentric sleeve II 4 is a circular ring, and the inner and outer surfaces of the circular ring are smooth. It is assembled with the eccentric sleeve I 3 and the eccentric sleeve III 5 in a clearance fit. One side (left side) of the circular ring extends to the middle to form a baffle with a circular hole, and a plurality of clamping grooves are symmetrically arranged on the edge of the baffle. The outer diameter of the eccentric sleeve II 4 (D2) is concentric with the diameter of the circular hole on the baffle (i.e., D6), and the inner diameter of the eccentric sleeve II 4 (also D1) is eccentric, with an eccentric distance of X2.

[0036] As shown in the drawings, Figure 5 The main body of the eccentric sleeve III 5 is a right-angled trapezoidal frame, and a front circular ring is protruded on the left side (i.e., the right-angled waist) of the frame. A matching through hole is provided on the right-angled trapezoidal frame. The front circular ring has a stepped hole structure, and the inner surface near the inner side (i.e., the right side) is a small-diameter light hole D2, which is assembled with the eccentric sleeve II 4 in a clearance fit; the inner surface of the front circular ring near the outer side (left side) is a large-diameter threaded hole M-d1, which can be connected with the outer thread of the double eccentric sleeve compression ring 2, so as to compress the eccentric sleeve I 3 and the eccentric sleeve II 4 on the eccentric sleeve III 5 by using the double eccentric sleeve compression ring 2.

[0037] Screw holes are provided on the bottom plate of the right-angled trapezoidal frame of the eccentric sleeve III 5, and the collimator group and the fast mirror group are fixed on the bottom plate by bolts.

[0038] In the light beam emitting end adjusting mechanism, D1 is a light surface, D1-6g is on eccentric sleeve I 3, and D1-7H is on eccentric sleeve II 4, that is, the two are sleeved together in hole shaft gap fit. D2 is a light surface, D2-6g is on eccentric sleeve II 4, and D2-7H is on eccentric sleeve III 5, that is, the two are also sleeved together in hole shaft gap fit. D3 is adjusted according to specific light, and is better larger under the premise of meeting the requirements as a whole. The threaded hole with diameter D4 is mainly used for fixing the quick light beam head 1, that is, the position size of the through hole on the quick light beam head is D4. D5 is smaller than D6, and D6 is smaller than D1 (from the assembly Figure 7 It can be seen.

[0039] The gland 6 in the sealing assembly is a circular ring, the clamp 7 is composed of two semicircular clamps, and the plastic sleeve 8 is a circular ring similar to an I-shaped section.

[0040] As shown in Figure 6 The shell 9 is formed in a "N" shape by three plates, a circular hole is arranged on the middle plate, screw holes are arranged around the circular hole, and the sealing assembly is fixed on the shell 9 through the screw holes.

[0041] The mounting / assembly process of the above light beam emitting end adjusting mechanism provided by the application is as follows: (1) Fix the collimating mirror 11 on the collimating mirror support 10 to obtain a collimating mirror assembly. Fix the fast mirror 13 on the fast mirror support 12 to obtain a fast mirror assembly. The collimating mirror assembly and the fast mirror assembly are respectively mounted to the right-angle trapezoidal frame bottom plate of the eccentric sleeve III 5 by using bolts.

[0042] (2) Insert the tail fiber of the high-power laser equipment into the socket of the quick light beam head 1, then horizontally pass two bolts through the holes on the external circular ring of the quick light beam head 1 and insert the bolts into the screw holes 15 on the eccentric sleeve I 3, and tighten the bolts to tightly connect the quick light beam head 1 and the eccentric sleeve I 3 together.

[0043] (3) The eccentric sleeve II 4 is sleeved on the circular ring base of the eccentric sleeve I 3 in a hole shaft gap fit mode, and the whole is assembled into the light hole D2 of the end surface circular ring of the eccentric sleeve III 5 in the same mode, so that the eccentric sleeve I 3 and the eccentric sleeve II 4 and the eccentric sleeve II 4 and the eccentric sleeve III 5 are connected in a gap fit mode.

[0044] (4) Insert the clamp into the clamping groove 14 of the eccentric sleeve I 3 or the eccentric sleeve II 4, and rotate the clamp to drive the eccentric sleeve I 3 and the eccentric sleeve II 4 to rotate, so as to adjust the position and light beam of the quick light beam head 1.

[0045] (5) Assemble the eccentric sleeve III 5 and the shell 9, and the quick light beam head 1 passes out of the circular hole of the shell 9 and remains outside.

[0046] (6) Adjust the position of the collimating mirror 11 to adjust the light beam.

[0047] (6) Repeat steps (4) and (6) until the parallelism of the light beam and the system performance reaches the design index, then use the double eccentric sleeve compression ring 2 to compress the eccentric sleeve I 3 and the eccentric sleeve II 4 on the eccentric sleeve III 5, and tighten the threads between the double eccentric sleeve compression ring 2 and the eccentric sleeve III 5, thereby realizing the assembly between the eccentric sleeve III 5 and the quick light beam head-eccentric sleeve I 3-eccentric sleeve II 4 combination. Fix and lock the collimating mirror 11 to ensure that its position does not change.

[0048] (8) As shown in Figure 6 , the plastic sleeve 8 is sleeved on the quick light beam head combination, and the plastic sleeve 8 is fixed to the shell 9 by using bolts and a gland 6 (provided with screw holes or through holes).

[0049] (9) The quick light beam head 1 is wrapped with a dustproof and waterproof pipe, then the clip 7 is sleeved and tightened to realize the sealing and fixing of the quick light beam head 1, and the environmental adaptability of the equipment is improved.

[0050] The principle of the present application is shown in Figure 8 . X1 is the eccentric distance of the eccentric sleeve I 3, X2 is the eccentric distance of the eccentric sleeve II 4. O represents the center of the circle D3, D4 and D5 in the eccentric sleeve I 3, O1 represents the center of the circle D1 in the eccentric sleeve I 3 and the eccentric sleeve II 4, and O2 represents the center of the circle D2 and D6 in the eccentric sleeve II 4. O1 is eccentric to O, and O2 is eccentric to O1, so O2 can stay at any position in the plane (two-dimensional) relative to O.

[0051] In the present application, when the calliper is used to rotate the eccentric sleeve I 3 and the eccentric sleeve II 4, the movement of the quick light beam head 1 is composed of the rotational movement of the two eccentric sleeves, so that the quick light beam head 1 can move to any position in the plane. After adjustment, the eccentric sleeve I 3 and the eccentric sleeve II 4 are compressed on the eccentric sleeve III 5 by the double eccentric sleeve compression ring 2.

[0052] The above design couples two eccentric movements, which can fix the quick light beam head at any position in a two-dimensional space and eliminate the production and assembly errors of structural parts. The device is not only suitable for position adjustment of QBH, but also suitable for position adjustment of all laser emitting ends.

[0053] It is worth noting that the above compression method (the double eccentric sleeve compression ring 2 is connected with the eccentric sleeve III 5 through threads to compress the eccentric sleeve I 3 and the eccentric sleeve II 4) is not limited to mechanical thread fixing method, but also includes elastic flat fixing method or adhesive fixing method, etc.

Claims

1. A beam emitting end adjustment mechanism, characterized in that: The beam emitting end adjustment mechanism includes a beam emitting end, eccentric sleeve I, eccentric sleeve II, and eccentric sleeve III. The beam emitting end is fixed on eccentric sleeve I, eccentric sleeve II is fitted on eccentric sleeve I, and eccentric sleeve III is fitted on eccentric sleeve II. Rotating eccentric sleeve I and eccentric sleeve II can drive the beam emitting end to move eccentrically in the plane.

2. The beam emitting end adjustment mechanism as described in claim 1, characterized in that: The methods for fixing and clamping eccentric sleeves I, II, and III include mechanical thread fixing, elastic flattening fixing, and adhesive fixing.

3. The beam emitting end adjustment mechanism as described in claim 1, characterized in that: The beam emitting end includes a fast beam head and a light source, the light source being connected to the fast beam head for outputting a beam to the outside.

4. The beam emitting end adjustment mechanism as described in claim 1, characterized in that: The eccentric sleeve I includes a large-diameter annular base and a small-diameter circular tube. The annular base and the circular tube have concentric internal through holes, and the outer wall of the annular base is not concentric with the outer wall of the circular tube. The beam emitting end is fixed to the end face of the circular tube, and the eccentric sleeve II is fitted onto the annular base of the eccentric sleeve I with a clearance fit.

5. The beam emitting end adjustment mechanism as described in claim 1, characterized in that: The eccentric sleeve II includes a ring and a baffle with a circular hole on one end face of the ring. The outer wall of the ring is concentric with the circular hole on the baffle and eccentric with the inner wall of the ring.

6. The beam emitting end adjustment mechanism as described in claim 1, characterized in that: The eccentric sleeve III includes a frame and an end face ring. A through hole is provided on the frame. The end face ring is fixed on the frame and faces the through hole. The end face ring is fitted onto the eccentric sleeve II with a clearance fit.

7. The beam emitting end adjustment mechanism as described in claim 1, characterized in that: The mechanism also includes a collimating lens group and a fast-reflecting mirror group, both of which are fixed on the eccentric sleeve III, and the beam emitting end, the collimating lens group, and the fast-reflecting mirror group are arranged coaxially in sequence.

8. The method of using the beam emitting end adjustment mechanism according to any one of claims 1-7, characterized in that... The method includes: assembling the beam emitting end, eccentric sleeve I, eccentric sleeve II, and eccentric sleeve III together; rotating eccentric sleeve I and eccentric sleeve II to drive the beam emitting end to make eccentric motion in the plane; and fixing and locking eccentric sleeve I and eccentric sleeve II after the beam emitting end moves to the target position.

9. The solution as described in claim 8, characterized in that: During the rotation of eccentric sleeve I and eccentric sleeve II, the position of the collimating lens group also needs to be adjusted simultaneously. Repeat the operation of rotating eccentric sleeve I and eccentric sleeve II and adjusting the collimating lens group until the beam parallelism meets the standard.

10. The application of the beam emitting end adjustment mechanism according to any one of claims 1-7 in the adjustment of various beams such as laser beams, infrared beams, and visible beams.

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