CN121361159B

CN121361159B - Numerical control plane milling machine for processing optical crystal

Info

Publication number: CN121361159B
Application number: CN202511940386.9A
Authority: CN
Inventors: 陈从贺; 陈从龙
Original assignee: Hg Optoelectronic Inc
Current assignee: Hg Optoelectronic Inc
Priority date: 2025-12-22
Filing date: 2025-12-22
Publication date: 2026-03-06
Anticipated expiration: 2045-12-22
Also published as: CN121361159A

Abstract

The invention relates to the field of plane milling machines, in particular to a numerical control plane milling machine for processing an optical crystal, which comprises a base, wherein an organism is arranged at the rear side of the top of the base, a top bin is arranged at the top of the organism, a speed reducing motor is arranged in the top bin, a driving bin is arranged at the front driving end of the speed reducing motor, a display screen is arranged at the front part of the driving bin, a servo motor is arranged at the top of the driving bin, a working shaft is fixedly connected with the driving end at the bottom of the servo motor, a fixed head is arranged at the bottom of the working shaft, a locking rotating head is rotatably connected at the lower part of the fixed head, telescopic pipes which are uniformly distributed are fixedly connected at the periphery of the fixed head, and infrared monitoring probes are fixedly connected at the telescopic ends at the bottom of the telescopic pipes.

Description

Numerical control plane milling machine for processing optical crystal

Technical Field

The invention relates to the field of plane milling machines, in particular to a numerical control plane milling machine for processing optical crystals.

Background

In the field of optical crystal machining, a numerical control plane milling machine is core equipment for realizing precise cutting of a crystal plane, but the machining precision of the numerical control plane milling machine is extremely easily influenced by factors such as cutter stability, edge cutting control, monitoring reliability and the like. The traditional numerical control plane milling machine has the obvious defects that the milling machine is only clamped and fixed at the tail part after being installed, when the extension length of the milling machine is adjusted to adapt to the processing of a special-shaped crystal or an inclined plane, the clamping fixed point is relatively back, so that the milling cutter rod part lacks effective support, vibration is easy to generate when the milling machine rotates at a high speed, the edge collapse and the collapse of an optical crystal are caused, the processing qualification rate is seriously influenced, meanwhile, the real-time monitoring of the distance between the milling machine and the edge of the crystal is lacking in the processing process, the processing parameters cannot be timely adjusted when the edge cutting stress suddenly changes, the defect is further aggravated, in addition, the residual cooling liquid and froth on the surface of the crystal can interfere the detection precision, the problems of clamping deflection, position dislocation and the like are difficult to find in real time, invalid processing is easy to cause, the precision and the efficiency of optical crystal processing are restricted, and the production requirement of high-precision optical crystal processing cannot be met.

Disclosure of Invention

The invention aims to solve the defects in the background art, and provides a numerical control plane milling machine for processing an optical crystal.

In order to achieve the above object, the technical scheme adopted by the invention is that the numerical control plane milling machine for processing optical crystals comprises a base, a machine body is arranged at the rear side of the top of the base, a top bin is arranged at the top of the machine body, a speed reducing motor is arranged in the top bin, a driving bin is arranged at the front driving end of the speed reducing motor, a display screen is arranged at the front part of the driving bin, a servo motor is arranged at the top of the driving bin, a driving shaft is fixedly connected with the bottom driving end of the servo motor, a fixed head is arranged at the bottom of the driving shaft, a locking rotary head is rotatably connected to the lower part of the fixed head, telescopic pipes uniformly distributed on the periphery of the fixed head are fixedly connected, infrared monitoring probes are fixedly connected to the telescopic pipe bottom telescopic ends, limiting pipes are fixedly connected to the inner bottom of the driving shaft, one side of the telescopic pipe is fixedly connected with a fixed rod, one end of the fixed rod, which is far away from the telescopic pipe, is fixedly connected to the lower peripheral part of the limiting pipe, a limit groove is formed in the inner side of the limiting pipe, a middle part of the limiting pipe is fixedly connected with a middle part of the driving ring, the middle part of the driving ring is fixedly connected with the inner side of the driving ring, the inner side of the driving ring is rotatably connected with the inner side of the rotary ring, the inner side of the driving ring is fixedly connected with one end of the inner side of the rotary ring, the rotary ring is fixedly connected with the inner side of the rotary ring, and the inner side of the rotary ring is fixedly connected with one end of the rotary ring, and the end of the end is fixedly connected with one end of the rotary ring, and fixed end of the rotary ring and fixed end. The threaded rod is kept away from driven bevel gear's equal threaded connection of one end has the clamp splice, the equal sliding connection of clamp splice is inboard at the spacing groove, the equal sliding connection in clamp splice upper portion is had the stopper, stopper top all with fixed head bottom fixed connection, the dwang top all rotates to be connected in the stopper bottom, driven gear, drive bevel gear, clamp splice and stopper all set up in locking spiral head inboard.

Preferably, the cavity is opened at organism front portion, the intracavity sideslip is connected with the lifting seat, a plurality of straight tubes are all installed to lifting seat middle part upside down side, the straight tube middle part all sets up to the ripple section.

Preferably, the industrial camera is installed in the middle of the front side of the lifting seat, the industrial camera is electrically connected with the display screen, the upper and lower parts of the front side of the lifting seat are provided with air outlets, and the air outlets are communicated with the inside of the straight pipe.

Preferably, the middle parts of two sides of the lifting seat are all penetrated and are in threaded connection with lead screws, the lead screws are all installed on the inner side of the cavity, and one end of the straight pipe, which is far away from the lifting seat, is fixedly connected with the upper part and the lower part in the cavity.

Preferably, the electric workbench is mounted on the front side of the top of the base, uniformly distributed mounting holes and mounting grooves are formed in the top of the electric workbench, and the electric workbench is used for mounting the optical crystal machining clamp.

Preferably, a control display panel is installed on one side of the machine body, and the control display panel is used for controlling the rest driving equipment and displaying the working state.

Compared with the prior art, the invention has the following beneficial effects:

1. The invention realizes the precise adjustment of the mounting and fastening of the milling cutter and the extending length through the locking rotary head, the toothed ring, the bevel gear transmission and the clamp block structure, can flexibly adapt to the processing requirements of the special-shaped optical crystal and the inclined surface, and simultaneously cooperates with the linkage design of the pump body, the liquid storage bin and the telescopic pipe in the fixed head, after the milling cutter extends and is adjusted, the telescopic pipe can synchronously drive the limiting pipe to slide through the fixed rod, thereby realizing the full-stroke package support of the milling cutter rod part, solving the problem of unstable rotation caused by the back clamping fixed point after the milling cutter of the traditional milling machine extends, obviously improving the stability of the milling process, and radically reducing the edge breakage risk caused by the vibration of the cutter.

2. According to the invention, the infrared monitoring probes are arranged at the bottoms of the telescopic pipes uniformly distributed on the periphery of the fixed head, so that the distance between the milling cutter and the optical crystal and the position of the crystal edge can be monitored in real time, when the milling cutter is detected to be close to the crystal edge, the system automatically controls the servo motor to reduce the rotating speed and lifts the knife edge through the hydraulic rod, so that the dynamic adaptation of edge processing parameters is realized, the edge breakage caused by the edge cutting stress mutation in the traditional processing is effectively avoided, the processing qualification rate is greatly improved, and the edge processing defect is accurately avoided.

3. The invention drives the lifting seat to drive the industrial camera to move up and down through the lead screw, can visually monitor the clamping state before the optical crystal processing and the milling process in the processing in the whole course, and feeds back in real time through the display screen, is convenient for operators to find problems of clamping deflection, position dislocation and the like in the first time, avoids invalid processing, simultaneously stretches or compresses the straight pipe with the corrugated section synchronously when the lifting seat moves, realizes the circulation action of air suction and ejection by utilizing the air outlet, efficiently eliminates cooling liquid and foam on the surface of the crystal, avoids interference with the interval detection precision of the infrared monitoring probe, ensures the accuracy of edge identification and parameter adjustment, further ensures the edge collapse resistance effect, and ensures the processing precision and the monitoring reliability.

Drawings

FIG. 1 is a schematic diagram showing a front perspective view of a numerical control plane milling machine for processing an optical crystal according to the present invention;

FIG. 2 is a schematic view showing a partial structure of a numerical control plane milling machine for processing an optical crystal according to the present invention;

FIG. 3 is a schematic view of the internal structure of a cavity of a numerical control plane milling machine for processing optical crystals;

FIG. 4 is a schematic view showing a partial structure of a milling cutter of a numerical control plane milling machine for processing an optical crystal according to the present invention;

FIG. 5 is a schematic view showing a partial structure in a locking rotary head of a numerical control plane milling machine for processing an optical crystal;

fig. 6 is a schematic view showing a partial structure of a clamp block of a numerical control plane milling machine for processing an optical crystal according to the present invention.

101. The device comprises a base, 102, an electric workbench, 103, a control display panel, 104, a machine body, 105, a top bin, 106, a display screen, 107, a working shaft, 108, a telescopic tube, 109, an infrared monitoring probe, 110, a milling cutter, 111, a cavity, 112, a screw rod, 113, an industrial camera, 114, a lifting seat, 115, a straight tube, 116, an air outlet, 117, a fixed head, 118, a clamping block, 119, a limiting groove, 120, a fixed rod, 121, a limiting tube, 122, a locking rotary head, 123, a toothed ring, 124, a limiting block, 125, a driven gear, 126, a threaded rod, 127, a driven bevel gear, 128, a rotary rod, 129, a driving bevel gear, 130 and a driving bin.

Detailed Description

The following description is presented to enable one of ordinary skill in the art to make and use the invention. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art.

1-6, A numerical control plane milling machine for processing optical crystals comprises a base 101, an organism 104 is arranged at the rear side of the top of the base 101, a top bin 105 is arranged at the top of the organism 104, a gear motor is arranged in the top bin 105, a driving bin 130 is arranged at the front driving end of the gear motor, a servo motor is arranged at the top of the driving bin 130, a working shaft 107 is fixedly connected with the bottom driving end of the servo motor, a fixed head 117 is arranged at the bottom of the working shaft 107, a locking rotary head 122 is rotatably connected at the lower part of the fixed head 117, a toothed ring 123 is fixedly connected at the middle lower part of the inner side of the locking rotary head 122, driven gears 125 are connected at two sides in the toothed ring 123 in a meshed manner, a rotating rod 128 is fixedly connected at the middle part of the driven gears 125, the lower part of the periphery of the rotating rod 128 is fixedly connected with a driving bevel gear 129, one side of the lower part of the driving bevel gear 129 is in meshed connection with a driven bevel gear 127, the middle part of the driven bevel gear 127 is fixedly connected with a threaded rod 126, one end of the periphery of the threaded rod 126 is arranged on the inner side of a locking rotary head 122 through a rotating seat, one end of the threaded rod 126, far away from the driven bevel gear 127, is in threaded connection with a clamping block 118, the clamping block 118 is in sliding connection with the inner side of a limiting groove 119, the inner side of the upper part of the clamping block 118 is in sliding connection with a limiting block 124, the top of the limiting block 124 is fixedly connected with the bottom of a fixed head 117, and the top of the rotating rod 128 is in rotating connection with the bottom of the limiting block 124;

Further, when concrete implementation, people can select suitable milling cutter 110 according to the processing demand, and insert the inside spacing pipe 121 with milling cutter 110's pole portion, rotate locking revolve head 122 after adjusting to suitable position, can utilize the ring gear 123 to drive the driven gear 125 who meshes with it to rotate, can drive rather than coaxial initiative bevel gear 129 through driven gear 125, can drive rather than the driven bevel gear 127 of meshing and rotate in step through initiative bevel gear 129, can drive fixed threaded rod 126 through driven bevel gear 127 and rotate in step, can drive clamp splice 118 through threaded rod 126 and remove, can realize the centre gripping fastening to milling cutter 110 pole portion through the clamp splice 118 of both sides, accomplish the installation to milling cutter 110, during concrete work, can drive the mill 110 of bottom installation through the servo motor on the drive bin 130 and rotate, can realize the abundant milling cutter face of optical crystal through high-speed pivoted milling cutter 110, when the processing milling face of optical crystal that can drive rather than meshing through initiative bevel gear 129, can drive the fixed threaded rod 126 through the drive 110 and can drive the side milling cutter 110 and can further realize that the inside can not stretch out the inside of the realization milling cutter 110 through the adjustable top of a pair of side mill 110, can further realize the inside through the realization of the adjustable top mill 110, can realize the inside the end mill 110 through the side of the adjustable height of the side mill 110, the inside is realized through the adjustable top of the end mill 110, the inside is realized, the end mill 110 is convenient to realize the inside is realized.

The front side of the top of the base 101 is provided with an electric workbench 102, the top of the electric workbench 102 is provided with uniformly distributed mounting holes and mounting grooves, the electric workbench 102 is used for mounting an optical crystal machining clamp, the electric workbench can be particularly an electric vacuum chuck, one side of a machine body 104 is provided with a control display panel 103, and the control display panel 103 is used for controlling other driving equipment and displaying working states;

Further, when the face milling machine is specifically implemented, people can realize face milling work of an optical crystal through the face milling machine, when the face milling machine is specifically used, people can install an electric vacuum chuck on the electric workbench 102 through a fixing bolt, the adsorption fixation of the optical crystal can be realized through the work of the electric vacuum chuck, and when the face milling is implemented, the sliding translation of the electric workbench 102 can be realized through an electric sliding table at the bottom of the electric workbench 102, the movement of the optical crystal is realized, and the subsequent face milling work is conveniently performed.

The outer periphery of the fixing head 117 is fixedly connected with evenly-distributed telescopic pipes 108, telescopic ends at the bottom of the telescopic pipes 108 are fixedly connected with infrared monitoring probes 109, the inner bottom of the working shaft 107 is slidably connected with limiting pipes 121, one sides of the lower parts of the telescopic pipes 108 are fixedly connected with fixing rods 120, one ends of the fixing rods 120, which are far away from the telescopic pipes 108, are fixedly connected with the lower parts of the outer periphery of the limiting pipes 121, milling cutters 110 are arranged on the inner sides of the limiting pipes 121, limiting grooves 119 are formed in the middle parts of the two sides of the outer periphery of the limiting pipes 121, the limiting pipes 121 are slidably connected with the milling cutters 110, a pump body and a liquid storage bin are arranged in the fixing head 117, the input end of the pump body is communicated with the liquid storage bin, and the output end of the pump body is communicated with the top of the telescopic pipes 108;

Further, in the concrete implementation, people can draw liquid in the liquid storage bin through the pump body and pump the liquid into the telescopic tube 108 through the pump body in the fixed head 117, so that synchronous extension of the telescopic tube 108 can be realized, the telescopic tube 108 can utilize the fixed rod 120 to drive the limiting tube 121 to slide, so that the limiting tube 121 can fully wrap the rod part of the milling cutter 110, the milling cutter 110 can still be effectively supported and limited after extension, the phenomenon that the milling cutter 110 rotates stably is avoided after the clamping fixed point is back after extension occurs, the monitoring of the optical crystal at the bottom can be realized through the infrared monitoring probe 109 at the bottom of the telescopic tube 108 in the concrete milling face working process, the relative position between the milling cutter 110 and the edge of the optical crystal can be determined through the infrared monitoring probe 109 in the concrete milling face, in the actual use process, the servo motor and the hydraulic rod can start to work when the infrared monitoring probe 109 detects the edge of the optical crystal through interval monitoring, the rotation speed can be reduced and the situation that the edge of the optical crystal is close to the edge of the optical crystal can be lifted, the actual milling cutter face can be avoided, and the edge of the optical crystal is broken can be prevented from being broken.

The front part of the machine body 104 is provided with a cavity 111, the inner side of the cavity 111 is connected with a lifting seat 114 in a sliding manner, the upper side and the lower side of the middle part of the lifting seat 114 are respectively provided with a plurality of straight pipes 115, the middle part of each straight pipe 115 is provided with a corrugated section, the middle part of the front side of the lifting seat 114 is provided with an industrial camera 113, the upper and the lower parts of the front side of the lifting seat 114 are respectively provided with an air outlet 116, the air outlets 116 are respectively communicated with the inside of the straight pipes 115, the middle parts of the two sides of the lifting seat 114 are respectively penetrated and are in threaded connection with a lead screw 112, the lead screws 112 are respectively arranged at the inner side of the cavity 111, one end, far away from the lifting seat 114, of each straight pipe 115 is fixedly connected with the upper part and the lower part in the cavity 111, and the front part of a driving bin 130 is provided with a display screen 106;

Further, when the operation through lead screw 112 can drive elevating seat 114 and remove in cavity 111 inside, can realize the control to the fixed optical crystal of front side through the industry camera 113 in elevating seat 114 front portion, and can show the optical crystal through display screen 106, can help people before processing with the state of observing the optical crystal during processing through display screen 106, avoid optical crystal to have the skew when adsorbing fixedly, lead to follow-up processing to go wrong, avoid people to need to bow down to examine, can help people to observe the milling surface processing condition of optical crystal in the first time during processing, make people can first time discovery when milling cutter 110 appears the position dislocation with the optical crystal, avoid finding misoperation, can first time discovery when the appearance of collapsing mouth condition, avoid follow-up processing waste time, be favorable to actual processing work, in the concrete use, people can drive elevating seat 114 and remove in the control scope, elevating seat 114 can compress or stretch the state of upper and lower part when moving, make the outside air can get into straight tube 116 through gas outlet 116, then can compress and be had the influence on the cooling liquid to the straight tube through the air inlet 116 again when processing, the air outlet is realized to the cooling down and is compressed, the air inlet is realized to the air inlet is blown out by the monitoring device is more than the air inlet and is cooled down to the air inlet 109 is favorable to the fact that the cooling down is blown out to the air inlet is done.

Working principle:

During practical use, people can realize the face milling work of an optical crystal through a plane milling machine, in specific use, people can install an electric vacuum chuck on the electric workbench 102 through a fixing bolt, can realize the adsorption and fixation of the optical crystal through the work of the electric vacuum chuck, can realize the sliding translation of the electric workbench 102 through an electric sliding table at the bottom of the electric workbench 102 during face milling, realize the movement of the optical crystal, facilitate the subsequent face milling work, select a proper milling cutter 110 according to the processing requirement, insert the rod part of the milling cutter 110 into the limiting tube 121, rotate the locking rotary head 122 after being adjusted to a proper position, drive a driven gear 125 meshed with the locking rotary head 122 through a toothed ring 123 to rotate, drive a driving bevel gear 129 coaxial with the driven gear 125 to rotate, the driving bevel gear 129 can drive the driven bevel gear 127 meshed with the driving bevel gear 129 to synchronously rotate, the driven bevel gear 127 can drive the threaded rod 126 which is fixed mutually to synchronously rotate, the clamping blocks 118 can be driven to move through the threaded rod 126, clamping and fastening of the rod parts of the milling cutter 110 can be realized through the clamping blocks 118 on two sides, the milling cutter 110 is installed, the servo motor on the driving bin 130 can drive the working shaft 107 to rotate during specific work, the milling cutter 110 installed at the bottom can be driven to rotate through the working shaft 107, the full milling surface of an optical crystal can be realized through the milling cutter 110 which rotates at a high speed, when the milling surface of the special-shaped optical crystal is processed, people can loosen the milling cutter 110 through the locking rotary head 122, then the milling cutter 110 is downwards extended out for one section, the extension length adjustment work of the milling cutter 110 can be realized, the device is convenient for specific use, further, the driving bin 130 can be driven to deflect through the speed reducing motor in the top bin 105, the processing work of the inclined plane is realized, further, the height adjustment of the top bin 105 can be realized through the hydraulic rod arranged in the machine body 104, further auxiliary milling work can be realized, optical crystals with different processing requirements can be conveniently handled, in actual use, people can pump liquid in the liquid storage bin through the pump body in the fixed head 117 and pump the liquid into the telescopic tube 108, the telescopic tube 108 can realize synchronous extension, the limiting tube 121 can be driven to slide through the telescopic tube 108 by utilizing the fixing rod 120, the limiting tube 121 can realize full package on the rod part of the milling cutter 110, the milling cutter 110 can still be effectively supported and limited after extension, the situation that a clamping fixing point is close after extension is avoided, the phenomenon that the rotation stability of the milling cutter 110 is affected can occur, during specific face milling operation, the infrared monitoring probe 109 at the bottom of the telescopic tube 108 can monitor the optical crystal at the bottom, the control of the distance between the optical crystals is realized, the infrared monitoring probe 109 can help to determine the relative position of the milling cutter 110 and the edge of the optical crystal during specific face milling, during actual use, when the infrared monitoring probe 109 detects the edge of the optical crystal through interval monitoring, the servo motor and the hydraulic rod start to operate, so that the rotation speed of the milling cutter 110 can be reduced and the edge of the knife can be raised when the edge of the optical crystal is close to, the situation that the optical crystal breaks edges and breaks edges can be avoided, the actual face milling operation is facilitated, during specific operation, the lifting seat 114 can be driven to move in the cavity 111 through the operation of the screw 112, the industrial camera 113 in front of the lifting seat 114 can monitor the optical crystal with the fixed front side, and can display the optical crystal through the display screen 106, people can observe the state of the optical crystal before and during processing through the display screen 106, the situation that the optical crystal is inclined during adsorption and fixation is avoided, subsequent processing is problematic, people need to bend down and examine down during processing is avoided, meanwhile, people can observe the milling surface processing condition of the optical crystal at the first time during processing, people can find the first time when the milling cutter 110 and the optical crystal are in dislocation, operation errors are avoided, the first time when the collapse condition occurs can be found, follow-up invalid processing is avoided, actual processing work is facilitated, people can drive the lifting seat 114 to move in a monitoring range, the lifting seat 114 can compress or stretch the upper and lower straight pipe 115 during moving, external air can enter the straight pipe 115 through the air outlet 116 during stretching, and then air in the straight pipe 115 can be sprayed out through the air outlet 116 again during compression, the effect on the cooling liquid and the infrared foam of the front optical crystal is avoided, and the monitoring of the gap is facilitated, and the practical monitoring probe 109 is avoided.

The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made therein without departing from the spirit and scope of the invention, which is defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A CNC planar milling machine for processing optical crystals, comprising a base (101), characterized in that: a body (104) is mounted on the rear top of the base (101), a top chamber (105) is mounted on the top of the body (104), a geared motor is installed inside the top chamber (105), a drive chamber (130) is mounted on the front drive end of the geared motor, a display screen (106) is mounted on the front of the drive chamber (130), a servo motor is mounted on the top of the drive chamber (130), a working shaft (107) is fixedly connected to the bottom drive end of the servo motor, a fixing head (117) is mounted on the bottom of the working shaft (107), and a locking screw head (12) is rotatably connected to the lower part of the fixing head (117). 2) The fixed head (117) is fixedly connected to a uniformly distributed telescopic tube (108) on its outer periphery. An infrared monitoring probe (109) is fixedly connected to the telescopic end of the bottom of the telescopic tube (108). A limit tube (121) is slidably connected to the bottom of the working shaft (107). A fixed rod (120) is fixedly connected to one side of the lower part of the telescopic tube (108). The end of the fixed rod (120) away from the telescopic tube (108) is fixedly connected to the lower part of the outer periphery of the limit tube (121). A milling cutter (110) is provided inside the limit tube (121). Limit grooves (119) are opened in the middle of both sides of the outer periphery of the limit tube (121). The limit tube (121) is slidably connected to the milling cutter (110). The fixed head (117) is equipped with a pump body and a liquid storage tank. The pump body input end is connected to the liquid storage tank, and the pump body output end is connected to the top of the telescopic pipe (108). A gear ring (123) is fixedly connected to the lower part of the inner side of the locking head (122). Driven gears (125) are meshed on both sides of the gear ring (123). A rotating rod (128) is fixedly connected to the middle of each driven gear (125). A driving bevel gear (129) is fixedly connected to the lower part of the outer periphery of each rotating rod (128). A driven bevel gear (127) is meshed on one side of the lower part of each driving bevel gear (129). A threaded rod (126) is fixedly connected to the middle of each driven bevel gear (127). One end of the outer circumference of the threaded rod (126) is mounted on the inner side of the locking head (122) via a rotating seat. The end of the threaded rod (126) away from the driven bevel gear (127) is threadedly connected to a clamping block (118). The clamping blocks (118) are slidably connected to the inner side of the limiting groove (119). The upper inner side of the clamping block (118) is slidably connected to a limiting block (124). The top of the limiting block (124) is fixedly connected to the bottom of the fixed head (117). The top of the rotating rod (128) is rotatably connected to the bottom of the limiting block (124). The driven gear (125), the driving bevel gear (129), the clamping block (118) and the limiting block (124) are all located inside the locking head (122).

2. A CNC planar milling machine for processing optical crystals according to claim 1, characterized in that: a cavity (111) is provided at the front of the machine body (104), a lifting seat (114) is slidably connected to the inner side of the cavity (111), and a plurality of straight tubes (115) are installed on the upper and lower sides of the middle part of the lifting seat (114), and the middle part of the straight tubes (115) is set as a corrugated section.

3. A CNC planar milling machine for processing optical crystals according to claim 2, characterized in that: an industrial camera (113) is installed in the middle of the front side of the lifting seat (114), the industrial camera (113) is electrically connected to the display screen (106), and an air outlet (116) is provided in the upper and lower parts of the front side of the lifting seat (114), the air outlet (116) is connected to the inside of the straight pipe (115).

4. A CNC planar milling machine for processing optical crystals according to claim 3, characterized in that: both sides of the lifting seat (114) are threaded with lead screws (112), the lead screws (112) are installed inside the cavity (111), and the end of the straight tube (115) away from the lifting seat (114) is fixedly connected to the upper and lower parts inside the cavity (111).

5. A CNC planar milling machine for processing optical crystals according to claim 1, characterized in that: an electric worktable (102) is installed on the front side of the top of the base (101), the top of the electric worktable (102) is provided with uniformly distributed mounting holes and mounting slots, and the electric worktable (102) is used to install optical crystal processing fixtures.

6. A CNC planar milling machine for processing optical crystals according to claim 1, characterized in that: a control display panel (103) is installed on one side of the machine body (104), and the control display panel (103) is used to control the other driving devices and display the working status.