An optical zoom laser precision machining device for deep holes and deep grooves

Abstract

The present invention relates to the field of laser processing, and specifically to an optical zoom laser precision processing deep hole and deep groove device, comprising a first housing, a laser generator mounting base, a laser generator, a beam expander mounting base, and a beam expander. An air inlet and an air outlet are respectively provided on two opposing side walls of the first housing. A heat dissipation mechanism is mounted on the first housing, and the heat dissipation mechanism includes an induced draft fan and an exhaust fan, which are respectively fixedly connected to two opposing side walls of the first housing. The induced draft fan is connected to the induced draft fan, and the exhaust fan is connected to the exhaust fan. A plurality of equidistantly arranged first heat dissipation fins are fixedly connected to the laser generator mounting base, and the plurality of first heat dissipation fins are located between the induced draft fan and the exhaust fan. The present invention solves the problem of poor heat dissipation in optical instruments.

Description

Technical Field

[0001] The present invention relates to the field of laser processing, in particular to an optical zoom laser precision processing deep hole and deep groove device. Background Art

[0002] Optical zoom laser processing is a method that uses a laser beam combined with optical zoom technology to achieve high-precision material processing. Its core is to dynamically adjust the laser's focal length to keep the laser beam focused on the processing surface, thereby achieving high-precision, high-efficiency, and non-contact processing in complex structures such as deep holes and deep grooves.

[0003] In the related art, an optical zoom laser precision processing deep hole and deep groove device includes a first shell and a second shell, the first shell and the second shell are fixedly connected, the top of the first shell is open, a cover plate is installed on the first shell, a laser generator and a beam expander are arranged in the first shell, a laser generator mounting seat connected to the laser generator is fixedly connected in the first shell, a beam expander mounting seat connected to the beam expander is fixedly connected in the first shell, a galvanometer X, a galvanometer Y, a Z-axis adjustment mechanism and a focusing lens are arranged in the second shell, a fixing seat is fixedly connected in the second shell, both galvanometer X and galvanometer Y are rotatably mounted on the fixing seat, the Z-axis adjustment mechanism is fixedly connected in the second shell, the focusing lens is connected to the Z-axis adjustment mechanism, a field mirror is arranged below the second shell, the field mirror is connected to the interior of the second shell through a field lens socket, a vent is opened on the first shell, a fan is installed in the vent to discharge the hot air in the first shell.

[0004] Regarding the above-mentioned related technologies, the air in the first shell is discharged only through a single-side fan to dissipate heat for the optical instrument in the first shell. The air in the first shell cannot form convection, and the heat exchange efficiency between the air and the optical instrument is low, resulting in poor heat dissipation effect of the optical instrument. Summary of the Invention

[0005] In order to solve the problem of poor heat dissipation effect of optical instruments, the present invention provides an optical zoom laser precision machining deep hole and deep groove device.

[0006] The present invention provides an optical zoom laser precision processing deep hole and deep groove device adopts the following technical solutions:

[0007] An optical zoom laser precision processing deep hole and deep groove device includes a first shell, a laser generator mounting base, a laser generator, a beam expander mounting base and a beam expander. An air duct and an air exhaust port are respectively provided on two opposite side walls of the first shell. A heat dissipation mechanism is installed on the first shell. The heat dissipation mechanism includes an induced draft fan and an exhaust fan. The induced draft fan and the exhaust fan are respectively fixedly connected to two opposite side walls of the first shell. The induced draft fan is connected to the induced draft port, and the exhaust fan is connected to the exhaust port. A plurality of equidistantly arranged first heat dissipation fins are fixedly connected to the laser generator mounting base, and the plurality of first heat dissipation fins are located between the induced draft fan and the exhaust fan.

[0008] Preferably, the top of the first shell is fixedly connected to the third shell, the first shell is provided with an inlet and outlet connected to the third shell, the third shell is provided with a first base, the bottom of the first base is installed with a second base, the bottom of the second base is fixedly connected with a plurality of equally spaced second heat dissipating fins, a liquid cooling circulation mechanism is installed between the first base and the second base, the second heat dissipating fins are staggered with the first heat dissipating fins, the second heat dissipating fins can contact the first heat dissipating fins, and the third shell is installed with a lifting mechanism for driving the first base to move.

[0009] Preferably, the lifting mechanism includes a lifting motor fixedly connected to the top surface of the third shell, a lifting screw is fixedly connected to the output shaft of the lifting motor, a movable plate is slidably installed in the third shell, the lifting screw is passed through the movable plate and is threadedly connected to the movable plate, a scissor-type lifting frame is installed between the third shell and the first base, and the movable plate is rotatably connected to the scissor-type lifting frame.

[0010] Preferably, the liquid cooling circulation mechanism includes a circulating water channel arranged inside the second base, a liquid metal storage tank is fixedly connected to the third shell, a liquid suction pump and a liquid discharge pump are fixedly connected to the liquid metal storage tank, the liquid inlet end of the liquid suction pump is connected to the liquid metal storage tank, the liquid outlet end of the liquid suction pump is connected to the circulating water channel through the liquid inlet pipe, the liquid outlet end of the liquid discharge pump is connected to the liquid metal storage tank, and the liquid inlet end of the liquid discharge pump is connected to the circulating water channel through the liquid outlet pipe.

[0011] Preferably, a first water pipe and a second water pipe are fixedly connected in the liquid metal storage tank, and the first water pipe and the second water pipe are connected through multiple connecting pipes. The first water pipe is connected to the external water pipe through the water inlet pipe, and the second water pipe is connected to the external water pipe through the water outlet pipe.

[0012] Preferably, an air inlet pipe is fixedly connected to the top of the third shell, and the air inlet pipe is communicated with an external inert gas storage box. An exhaust pipe is fixedly connected to the bottom of the first shell, and a one-way valve is provided in the exhaust pipe. A first sealing mechanism for closing the air inlet and the air outlet is installed in the first shell, and a second sealing mechanism for closing the inlet and outlet is installed in the first shell.

[0013] Preferably, the first sealing mechanism includes a first motor fixedly connected to the first shell, a first screw is fixedly connected to the output shaft of the first motor, a first slide is slidably installed in the first shell, the first screw is passed through the first slide and is threadedly connected to the first slide, two first sealing plates are slidably installed in the first shell, the two first sealing plates can be respectively covered on the air inlet and the air outlet, and the first slide and the first sealing plate are fixedly connected by a connecting frame.

[0014] Preferably, the second sealing mechanism includes a second motor fixedly connected to the first shell, a gear is fixedly connected to the output shaft of the second motor, two racks are slidably installed in the first shell, both of which are engaged with the gear, and both of the racks are fixedly connected to a connecting plate, and both of the connecting plates are fixedly connected to a second sealing plate covering the inlet and outlet.

[0015] Preferably, an elastic sheet is fixedly connected to the second heat dissipation fin, and a slot for cooperating with the elastic sheet is provided on the first heat dissipation fin.

[0016] Preferably, a plurality of first heat dissipation fins arranged at equal intervals are also fixedly connected to the beam expander mounting base.

[0017] In summary, the present invention includes at least the following beneficial technical effects:

[0018] 1. When the deep hole and deep groove device is in use, the induced draft fan and the exhaust fan are started. The multiple first heat dissipation fins can conduct heat from the laser generator mounting base, increasing the contact area between the heat source and the air. At the same time, the induced draft fan and the exhaust fan can form convection in the first housing, improving the heat exchange efficiency in the first housing and solving the problem of poor heat dissipation effect of the optical instrument.

[0019] 2. Start the lifting motor, which drives the multiple second heat sinks to be inserted into the first heat sinks and contact the first heat sinks. Heat exchange occurs between the second heat sinks and the first heat sinks. At the same time, heat exchange occurs between the liquid metal and the multiple second heat sinks. The liquid metal circulates in the circulating water channel, continuously dissipating heat from the second heat sinks, further solving the problem of poor heat dissipation of the optical instrument.

[0020] 3. Before the second heat dissipating fin enters the first shell, the second blocking mechanism is activated to release the seal on the inlet and outlet. When the second heat dissipating fin contacts the first heat dissipating fin, the first blocking mechanism is first activated to seal the air inlet and the air outlet. The inert gas is then introduced into the third shell through the air inlet pipe and enters the first shell through the inlet and outlet. At this time, the first shell and the third shell are a closed space, and the inert gas can protect the liquid metal to prevent oxidation of the liquid metal. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the optical zoom laser precision processing deep hole and deep groove device according to an embodiment of the present invention.

[0022] Figure 2 2 is a schematic diagram of the internal structure of the first shell according to an embodiment of the present invention.

[0023] Figure 3 It is a structural schematic diagram of the first blocking mechanism of an embodiment of the present invention.

[0024] Figure 4 It is a structural schematic diagram of the heat dissipation mechanism of an embodiment of the present invention.

[0025] Figure 5 2 is a schematic diagram of the internal structure of the third shell according to an embodiment of the present invention.

[0026] Figure 6 It is a structural schematic diagram of the second blocking mechanism of an embodiment of the present invention.

[0027] Figure 7 2 is a schematic structural diagram of a lifting mechanism according to an embodiment of the present invention.

[0028] Figure 8 It is a structural schematic diagram of the first heat dissipation fin according to an embodiment of the present invention.

[0029] Figure 9 Schematic diagram of the structure of the circulating water channel of an embodiment of the present invention.

[0030] Figure 10 It is a structural schematic diagram of the liquid cooling circulation mechanism of an embodiment of the present invention.

[0031] Explanation of the reference numerals: 1. First shell; 11. Laser generator mounting seat; 12. Laser generator; 13. Beam expander mounting seat; 14. Beam expander; 15. Exhaust pipe; 2. Second shell; 21. Z-axis adjustment mechanism; 22. Focusing lens; 23. Fixing seat; 24. Field lens; 25. Field lens adapter; 3. Third shell; 31. Inlet pipe; 4. Heat dissipation mechanism; 41. Induced draft fan; 42. Exhaust fan; 43. First heat dissipation fin; 44. First base; 45. Second base; 46. Second heat dissipation fin; 461. Elastic sheet; 5. Liquid cooling circulation mechanism; 51. Circulating water channel; 52. Liquid metal Storage box; 53, liquid suction pump; 531, liquid inlet pipe; 54, liquid discharge pump; 541, liquid outlet pipe; 55, first water pipe; 551, water inlet pipe; 56, second water pipe; 561, water outlet pipe; 57, connecting pipe; 6, lifting mechanism; 61, lifting motor; 62, lifting screw; 63, moving plate; 64, scissor-type lifting frame; 7, first blocking mechanism; 71, first motor; 72, first screw; 73, first slide; 74, first blocking plate; 75, connecting frame; 8, second blocking mechanism; 81, second motor; 811, gear; 82, rack; 83, connecting plate; 84, second blocking plate. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1 -Attached Figure 10 The present invention is described in further detail.

[0033] The embodiment of the present invention discloses an optical zoom laser precision processing deep hole and deep groove device. Figure 1 and Figure 2 The optical zoom laser precision processing deep hole and deep groove device includes a first shell 1, a laser generator mounting seat 11, a laser generator 12, a beam expander mounting seat 13, a beam expander 14, a second shell 2, a galvanometer X, a galvanometer Y, a Z-axis adjustment mechanism 21 and a focusing lens 22; the first shell 1 and the second shell 2 are fixedly connected, the laser generator mounting seat 11 and the beam expander mounting seat 13 are fixedly connected in the first shell 1, the laser generator 12 is mounted on the laser generator mounting seat 11, the beam expander 14 is mounted on the beam expander mounting seat 13, a fixed seat 23 is fixedly connected in the second shell 2, the galvanometer X and the galvanometer Y are both rotatably mounted on the fixed seat 23, the Z-axis adjustment mechanism 21 is fixedly connected in the second shell 2, the focusing lens 22 is connected to the Z-axis adjustment mechanism 21, and a field lens 24 is provided at the bottom of the second shell 2, and the field lens 24 is communicated with the interior of the second shell 2 through the field lens socket 25.

[0034] Reference Figure 2 and Figure 3, an air inlet and an air exhaust port are respectively provided on the two opposite side walls of the first shell 1, and two air inlets and two air exhaust ports are respectively provided, and the two air inlets and the air exhaust ports are respectively provided corresponding to the laser generator 12 and the beam expander 14. A heat dissipation mechanism 4 is installed on the first shell 1, and the heat dissipation mechanism 4 includes two induced draft fans 41 and two exhaust fans 42. The induced draft fans 41 and the exhaust fans 42 are respectively fixedly connected to the two opposite side walls of the first shell 1, and the induced draft fans 41 are connected to the air inlet, and the exhaust fans 42 are connected to the exhaust port. The laser generator mounting seat 11 is connected to the beam expander 1 4 are fixedly connected to a plurality of first heat dissipation fins 43 arranged at equal intervals, and the plurality of first heat dissipation fins 43 are located between the induced draft fan 41 and the exhaust fan 42; when the deep hole and deep groove device is in use, the induced draft fan 41 and the exhaust fan 42 are started, and the plurality of first heat dissipation fins 43 can conduct heat on the laser generator mounting base 11, thereby increasing the contact area between the heat source and the air. At the same time, the induced draft fan 41 and the exhaust fan 42 can form convection in the first housing 1, thereby improving the heat exchange efficiency in the first housing 1 and solving the problem of poor heat dissipation effect of the optical instrument.

[0035] Reference Figures 2 to 7 The top of the first shell 1 is fixedly connected to the third shell 3. The first shell 1 is provided with an inlet and outlet communicating with the third shell 3. A first base 44 is provided in the third shell 3. A second base 45 is installed at the bottom of the first base 44. A plurality of second heat dissipating fins 46 arranged at equal distances are fixedly connected to the bottom of the second base 45. A liquid cooling circulation mechanism 5 is installed between the first base 44 and the second base 45. The second heat dissipating fins 46 are staggered with the first heat dissipating fins 43. The second heat dissipating fins 46 can contact the first heat dissipating fins 43. A mechanism for driving the heat dissipating fins 46 is installed in the third shell 3. The lifting mechanism 6 moves the first base 44; the lifting mechanism 6 is started, and the lifting mechanism 6 drives the first base 44 to move, the first base 44 drives the second base 45 to move, and the second base 45 drives the multiple second heat dissipation fins 46 to move, so that the multiple second heat dissipation fins 46 are inserted into the first heat dissipation fins 43 and contact with the first heat dissipation fins 43, and heat exchange is performed between the second heat dissipation fins 46 and the first heat dissipation fins 43. At the same time, the liquid cooling circulation mechanism 5 cools the second heat dissipation fins 46, further solving the problem of poor heat dissipation effect of the optical instrument.

[0036] Reference Figure 7The lifting mechanism 6 includes a lifting motor 61 fixedly connected to the top surface of the third shell 3, and a lifting screw 62 is fixedly connected to the output shaft of the lifting motor 61. A movable plate 63 is slidably installed in the third shell 3. The lifting screw 62 is passed through the movable plate 63 and is threadedly connected to the movable plate 63. A scissor-type lifting frame 64 is installed between the third shell 3 and the first base 44, and the movable plate 63 is rotatably connected to the scissor-type lifting frame 64; start the lifting motor 61, the lifting motor 61 drives the lifting screw 62 to rotate, the lifting screw 62 drives the movable plate 63 to move, and the movable plate 63 drives the first base 44 to move through the scissor-type lifting frame 64.

[0037] Reference Figures 4 to 9 The liquid cooling circulation mechanism 5 includes a circulating water channel 51 arranged inside the second base 45, a liquid metal storage tank 52 is fixedly connected to the third shell 3, a liquid pump 53 and a liquid discharge pump 54 are fixedly connected to the liquid metal storage tank 52, the liquid inlet end of the liquid pump 53 is connected to the liquid metal storage tank 52, the liquid outlet end of the liquid pump 53 is connected to the circulating water channel 51 through the liquid inlet pipe 531, the liquid outlet end of the liquid discharge pump 54 is connected to the liquid metal storage tank 52, and the liquid inlet end of the liquid discharge pump 54 is connected to the liquid metal storage tank 52 through the liquid outlet pipe 531. The pipe 541 is connected to the circulating water channel 51; the liquid extraction pump 53 and the liquid discharge pump 54 are started, the liquid extraction pump 53 extracts the liquid metal in the liquid metal storage tank 52 and transports it to the circulating water channel 51 through the liquid inlet pipe 531, and heat exchange is performed between the liquid metal and the multiple second heat dissipation fins 46. The liquid discharge pump 54 extracts the liquid metal in the circulating water channel 51 through the liquid outlet pipe 541 and transports it back to the liquid metal storage tank 52, so that the liquid metal continues to dissipate heat to the second heat dissipation fins 46.

[0038] Reference Figure 5 and Figure 10 A first water pipe 55 and a second water pipe 56 are fixedly connected in the liquid metal storage tank 52. The first water pipe 55 and the second water pipe 56 are connected by multiple connecting pipes 57. The first water pipe 55 is connected to the external water pipe through the water inlet pipe 551, and the second water pipe 56 is connected to the external water pipe through the water outlet pipe 561; external cold water enters the first water pipe 55 through the water inlet pipe 551, and flows to the connecting pipe 57 and the second water pipe 56, and is finally discharged through the water outlet pipe 561, thereby cooling the liquid metal in the liquid metal storage tank 52 and improving the heat dissipation effect of the liquid metal on the second heat dissipation fins 46.

[0039] Reference Figures 3 to 5The top of the third shell 3 is fixedly connected with an air inlet pipe 31, which is connected to an external inert gas storage box. The bottom of the first shell 1 is fixedly connected with an exhaust pipe 15, and a one-way valve is provided in the exhaust pipe 15. The first shell 1 is provided with a first blocking mechanism 7 for closing the air inlet and the air outlet, and the first shell 1 is provided with a second blocking mechanism 8 for closing the inlet and the outlet; before the second heat dissipating fin 46 enters the first shell 1, the second blocking mechanism 8 is started, and the second blocking mechanism 8 releases the blockage of the inlet and the outlet. When the second heat dissipating fin 46 contacts the first heat dissipating fin 43, the first blocking mechanism 7 is first started, and the first blocking mechanism 7 closes the air inlet and the air outlet, and then the inert gas is introduced into the third shell 3 through the air inlet pipe 31, and enters the first shell 1 through the inlet and the outlet. At this time, the first shell 1 and the third shell 3 are a closed space, and the inert gas can protect the liquid metal to prevent the liquid metal from being oxidized.

[0040] Reference Figure 3 The first blocking mechanism 7 includes a first motor 71 fixedly connected to the first shell 1, and a first screw 72 is fixedly connected to the output shaft of the first motor 71. A first slide plate 73 is slidably installed in the first shell 1, and the first screw 72 is passed through the first slide plate 73 and is threadedly connected to the first slide plate 73. Two first blocking plates 74 are slidably installed in the first shell 1. The two first blocking plates 74 can be respectively covered on the air inlet and the air outlet, and the first slide plate 73 is fixedly connected to the first blocking plate 74 by a connecting frame 75; start the first motor 71, the first motor 71 drives the first screw 72 to rotate, the first screw 72 drives the first slide plate 73 to move, the first slide plate 73 drives the connecting frame 75 to move, and the connecting frame 75 drives the two first blocking plates 74 to move, so that the air inlet and the air outlet can be closed.

[0041] Reference Figure 5 and Figure 6 The second blocking mechanism 8 includes a second motor 81 fixedly connected to the first shell 1, and a gear 811 is fixedly connected to the output shaft of the second motor 81. Two racks 82 are slidably installed in the first shell 1, and both are meshed with the gear 811. The two racks 82 are fixedly connected to a connecting plate 83, and the two connecting plates 83 are fixedly connected to a second blocking plate 84 covering the inlet and outlet; start the second motor 81, the second motor 81 drives the gear 811 to rotate, the gear 811 drives the two racks 82 away from each other, the two racks 82 respectively drive the connecting plate 83 to move, and the connecting plate 83 drives the second blocking plate 84 to move, so that the inlet and outlet are opened.

[0042] Reference Figure 8 and Figure 9An elastic piece 461 is fixedly connected to the second heat dissipation fin 46, and a card slot for cooperating with the elastic piece 461 is opened on the first heat dissipation fin 43; when the second heat dissipation fin 46 contacts the first heat dissipation fin 43, the elastic piece 461 is inserted into the card slot, so that the second heat dissipation fin 46 and the first heat dissipation fin 43 are tightly fitted, thereby improving the heat exchange efficiency between the second heat dissipation fin 46 and the first heat dissipation fin 43.

[0043] The implementation principle of an optical zoom laser precision machining deep hole and deep groove device according to an embodiment of the present invention is as follows: during the use of the deep hole and deep groove device, the induced draft fan 41 and the exhaust fan 42 are started, and the multiple first heat dissipation fins 43 can conduct the heat on the laser generator mounting seat 11, thereby increasing the contact area between the heat source and the air. At the same time, the induced draft fan 41 and the exhaust fan 42 can form convection in the first shell 1, thereby improving the heat exchange efficiency in the first shell 1; when strong heat dissipation of the optical instrument is required, the second motor 81 is first started, and the second motor 81 drives the two second blocking plates 84 to move away from each other, so that the inlet and outlet are opened, and then the lifting motor 61 is started, and the lifting motor 61 drives the first base 44 to move The first base 44 drives the second base 45 to move, and the second base 45 drives the multiple second heat dissipation fins 46 to be inserted into the first heat dissipation fins 43 and contact the first heat dissipation fins 43. Heat exchange is performed between the second heat dissipation fins 46 and the first heat dissipation fins 43, and heat exchange is performed between the liquid metal and the multiple second heat dissipation fins 46. Then the first motor 71 is started, and the first motor 71 drives the first sealing plate 74 to move to close the air inlet and the air outlet. Then the inert gas is introduced into the third shell 3 through the air inlet pipe 31, and enters the first shell 1 through the inlet and outlet. At this time, the first shell 1 and the third shell 3 are a closed space, and the inert gas can protect the liquid metal.

[0044] The above are all preferred embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. An optical zoom laser precision machining deep hole and deep groove device, comprising a first housing (1), a laser generator mounting seat (11), a laser generator (12), a beam expander mounting seat (13) and a beam expander (14), characterized in that: An air inlet and an air outlet are respectively provided on two opposite side walls of the first shell (1); a heat dissipation mechanism (4) is installed on the first shell (1); the heat dissipation mechanism (4) comprises an induced draft fan (41) and an exhaust fan (42); the induced draft fan (41) and the exhaust fan (42) are respectively fixedly connected to two opposite side walls of the first shell (1); the induced draft fan (41) is in communication with the air inlet, and the exhaust fan (42) is in communication with the exhaust fan; a plurality of first heat dissipation fins (43) arranged at equal distances are fixedly connected to the laser generator mounting seat (11); the plurality of first heat dissipation fins (43) are located between the induced draft fan (41) and the exhaust fan (42); The top of the first shell (1) is fixedly connected to the third shell (3), the first shell (1) is provided with an inlet and outlet communicating with the third shell (3), the third shell (3) is provided with a first base (44), the bottom of the first base (44) is installed with a second base (45), the bottom of the second base (45) is fixedly connected with a plurality of second heat dissipation fins (46) arranged at equal intervals, a liquid cooling circulation mechanism (5) is installed between the first base (44) and the second base (45), the second heat dissipation fins (46) and the first heat dissipation fins (43) are staggered, and the second heat dissipation fins (46) can contact the first heat dissipation fins (43), and the third shell (3) is provided with a lifting mechanism (6) for driving the first base (44) to move; The lifting mechanism (6) includes a lifting motor (61) fixedly connected to the top surface of the third shell (3), a lifting screw (62) fixedly connected to the output shaft of the lifting motor (61), a movable plate (63) slidably installed in the third shell (3), the lifting screw (62) passing through the movable plate (63) and being threadedly connected to the movable plate (63), a scissor-type lifting frame (64) is installed between the third shell (3) and the first base (44), and the movable plate (63) is rotatably connected to the scissor-type lifting frame (64).

2. The optical zoom laser precision machining deep hole and deep groove device according to claim 1, characterized in that: The liquid cooling circulation mechanism (5) includes a circulating water channel (51) arranged inside the second base (45); a liquid metal storage tank (52) is fixedly connected to the third shell (3); a liquid pump (53) and a liquid discharge pump (54) are fixedly connected to the liquid metal storage tank (52); a liquid inlet end of the liquid pump (53) is connected to the liquid metal storage tank (52); a liquid outlet end of the liquid pump (53) is connected to the circulating water channel (51) through a liquid inlet pipe (531); a liquid outlet end of the liquid discharge pump (54) is connected to the liquid metal storage tank (52); and a liquid inlet end of the liquid discharge pump (54) is connected to the circulating water channel (51) through a liquid outlet pipe (541).

3. The optical zoom laser precision machining deep hole and deep groove device according to claim 2, characterized in that: A first water pipe (55) and a second water pipe (56) are fixedly connected in the liquid metal storage tank (52); the first water pipe (55) and the second water pipe (56) are communicated with each other via a plurality of connecting pipes (57); the first water pipe (55) is connected to an external water pipe via a water inlet pipe (551); and the second water pipe (56) is connected to an external water pipe via a water outlet pipe (561).

4. The optical zoom laser precision machining deep hole and deep groove device according to claim 2, characterized in that: The top of the third shell (3) is fixedly connected to an air inlet pipe (31), and the air inlet pipe (31) is communicated with an external inert gas storage box. The bottom of the first shell (1) is fixedly connected to an exhaust pipe (15), and a one-way valve is provided in the exhaust pipe (15). The first shell (1) is equipped with a first blocking mechanism (7) for blocking the air inlet and the air outlet, and the first shell (1) is equipped with a second blocking mechanism (8) for blocking the inlet and outlet.

5. The optical zoom laser precision machining deep hole and deep groove device according to claim 4, characterized in that: The first blocking mechanism (7) comprises a first motor (71) fixedly connected to the first housing (1); a first screw (72) is fixedly connected to the output shaft of the first motor (71); a first slide plate (73) is slidably mounted in the first housing (1); the first screw (72) is passed through the first slide plate (73) and is threadedly connected to the first slide plate (73); two first blocking plates (74) are slidably mounted in the first housing (1); the two first blocking plates (74) can be respectively covered on the air inlet and the air outlet; the first slide plate (73) and the first blocking plate (74) are fixedly connected via a connecting frame (75).

6. The optical zoom laser precision machining deep hole and deep groove device according to claim 4, characterized in that: The second blocking mechanism (8) comprises a second motor (81) fixedly connected to the first housing (1); a gear (811) is fixedly connected to the output shaft of the second motor (81); two racks (82) meshing with the gears (811) are slidably mounted in the first housing (1); a connecting plate (83) is fixedly connected to the two racks (82); and a second blocking plate (84) covering the inlet and outlet is fixedly connected to the two connecting plates (83).

7. The optical zoom laser precision machining deep hole and deep groove device according to claim 1, characterized in that: An elastic sheet (461) is fixedly connected to the second heat dissipation fin (46), and a slot for use with the elastic sheet (461) is provided on the first heat dissipation fin (43).

8. The optical zoom laser precision machining deep hole and deep groove device according to claim 1, characterized in that: A plurality of first heat dissipation fins (43) arranged at equal intervals are also fixedly connected to the beam expander mounting base (13).

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