CN115555912A - Numerical control machine tool with safety protection device - Google Patents

Abstract

The invention discloses a numerical control machine tool with a safety protection device, relates to the technical field of numerical control machine tools, and comprises a numerical control machine tool main body with the safety protection device, wherein the numerical control machine tool main body with the safety protection device comprises a numerical control machine tool, and machining equipment is fixedly arranged on the upper surface of the numerical control machine tool. According to the invention, the safety protection mechanism is installed, the motor I works to drive the double-end threaded rod to rotate, the safety protection cover enables the safety protection cover to relatively move under the matching of the limiting rod and the double-end threaded rod, the safety protection covers are mutually close and combined to form a complete protection cover, the safety protection is carried out on scraps splashed by a processing workpiece of processing equipment, the stable supporting mechanism carries out auxiliary supporting action on the safety protection cover, the supporting clamping plate is clamped with the safety protection cover, the elastic winding rod is matched with the inner sliding rod to enable the telescopic sleeve rod to extend by utilizing elasticity to support the supporting clamping plate, and meanwhile, the safety protection cover shrinks when moving backwards, so that the stable operation of the safety protection cover is ensured.

Description

A CNC machine tool with a safety guard

technical field

The invention relates to the technical field of numerical control machine tools, in particular to a numerical control machine tool with a safety protection device.

Background technique

CNC machine tool is the abbreviation of numerical control machine tool, which is an automatic machine tool equipped with a program control system. The control system can logically process programs with control codes or other symbolic instructions, decode them, express them in coded numbers, and input them into the numerical control device through the information carrier. After calculation and processing, various control signals are sent by the numerical control device to control the movement of the machine tool, and the parts are automatically processed according to the shape and size required by the drawing. When the machine tool is processing the workpiece, debris often splashes, which is easy to cause damage to the workers. Cause accidental injury, so the present invention proposes a kind of numerical control machine tool with safety protection device.

In the prior art, a Chinese utility model patent document with a publication number of CN214519139U and a publication date of October 29, 2021 was proposed to solve the above technical problems. The technical solution disclosed in this patent document is as follows: a The CNC machine tool comprises a CNC machine tool body, both sides of the top of the CNC machine tool body are fixedly equipped with support plates, and the CNC machine tool body is installed with threaded rods through bearings installed on both sides of the top, and the two threaded rods A second bevel gear is fixedly installed at the top of each, and a motor is fixedly installed above one side of the support plate. This kind of CNC machine tool with safety protection device, the utility model is equipped with a CNC machine tool body, a slide rail, a slider, a baffle plate, a threaded rod, a support plate, a glass, a motor, a first bevel gear, a second bevel gear, a horizontal The joint use of the shaft and the first limit block can not only avoid the splashing of debris during processing through the baffle, but also protect the workers from injury. The baffle can move up and down, which is convenient for maintenance and cleaning of the CNC machine tool body. The protection device is disassembled, and the structure is simple and the operation is convenient.

In the actual use of the above technical solution, the following problems will occur: the protective device cannot handle the debris splashed inside, and the protective cover needs to be disassembled for manual cleaning afterward, which increases the workload of workers and is not practical. High; debris splashing will cause damage to the glass, and frequent replacement of glass will cause waste of resources.

Contents of the invention

The present invention provides a numerically controlled machine tool with a safety protection device to solve the problems raised in the above-mentioned background technology.

In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is:

A numerical control machine tool with a safety protection device, comprising a main body of the numerical control machine tool of the safety protection device, the main body of the numerical control machine tool of the safety protection device includes a numerical control machine tool, processing equipment is fixedly installed on the upper surface of the numerical control machine tool, and the outside of the processing equipment A safety protection mechanism is provided, and one side of the safety protection mechanism is provided with an observation window mechanism, and the safety protection mechanism includes a safety protection cover, a motor one, a stable support mechanism and an internal cleaning mechanism, and the lower surface of the safety protection cover In contact with the upper surface of the CNC machine tool, the observation window mechanism includes an outer glass installation frame and a protective net, and one side surface of the outer glass installation frame is fixedly connected with the side surface of the safety shield.

The further improvement of the technical solution of the present invention lies in that: the lower surface of the motor one is fixedly connected with the upper surface of the CNC machine tool, the output shaft of the motor one is fixedly equipped with a double-ended threaded rod, and one end of the double-ended threaded rod is connected to the CNC machine tool. The surface of the machine tool is rotationally connected, one side of the double-ended threaded rod is provided with a limit rod, and the two ends of the limit rod are respectively fixedly connected with the surface of the CNC machine tool, and the motor drives the double-ended threaded rod to rotate, and the safety shield Under the cooperation of the limit rod and the double-ended threaded rod, the safety protection cover is relatively moved.

The further improvement of the technical solution of the present invention lies in that: the inner wall of the safety shield is threadedly connected with the outer surface of the double-ended threaded rod, the inner wall of the safety shield is slidably connected with the outer surface of the limit rod, and the stable support mechanism It includes a support clamping plate, the side surface of the support clamping plate is clamped with the outer surface of the safety shield, and the safety shields are close to each other to form a complete shield to protect the debris splashed by the workpiece processed by the processing equipment.

The further improvement of the technical solution of the present invention lies in: the outer side of the support clamp is fixedly equipped with a telescopic sleeve rod, one end of the telescopic sleeve rod is fixedly connected with the surface of the CNC machine tool, and the inside of the telescopic sleeve rod is fixedly installed with an inner slide Rod, the outer surface of the inner sliding rod is slidingly connected with the inner surface of the telescopic sleeve rod, the stable support mechanism provides auxiliary support for the safety shield, the support clamp is clamped with the safety shield, and the elastic winding rod and the inner sliding The rods cooperate to use the elasticity to make the telescopic sleeve rods stretch to support the supporting clamps, and at the same time shrink when the safety shield moves backward, so as to ensure the stable operation of the safety shield.

The further improvement of the technical solution of the present invention is that: the outer surface of the telescopic sleeve rod is sleeved with an elastic winding rod, one end of the elastic winding rod is in contact with one end of the sliding rod of the telescopic sleeve rod, and the outer surface of the elastic winding rod In contact with the inner surface of the telescopic sleeve rod, the motor two works to rotate the threaded rod, and the limit installation sleeve plays the role of installing the threaded rod and limiting the installation of the horizontal plate.

The further improvement of the technical solution of the present invention lies in that: the internal cleaning mechanism includes a limit installation sleeve, the side surface of the limit installation sleeve is fixedly connected with the side surface of the safety shield, and the lower surface of the limit installation sleeve is fixedly installed There is a second motor, the output shaft of the second motor is fixedly installed with a threaded rod, the upper end of the threaded rod is rotatably connected to the top of the inner surface of the limit installation sleeve, and the mounting horizontal plate moves down under the action of the threaded rod to clean the debris The brush and the debris magnetic strip cooperate with each other, and the debris cleaning brush cleans the debris on the surface of the CNC machine tool.

The further improvement of the technical solution of the present invention is that: the inner side of the safety shield is provided with a mounting horizontal plate, one side of the mounting horizontal plate is fixedly installed with a sliding block, and the side walls of the safety shield and the limit installation sleeve are opened. There is a limit chute adapted to the installation horizontal plate, the inner wall of the slider of the installation horizontal plate is threadedly connected with the outer surface of the threaded rod, and the debris magnetic strip uses the principle of magnetic attraction to absorb the debris to prevent the debris from dispersing , the cleaning brush mounting column can be removed from the mounting sleeve by pressing the telescopic elastic snap pin.

The further improvement of the technical solution of the present invention lies in that: a debris cleaning brush is provided under the installation horizontal plate, and a cleaning brush installation column is fixedly installed on the upper surface of the debris cleaning brush, and the interior of the cleaning brush installation column is movable. There are telescopic elastic locking pins, the lower surface of the installation horizontal plate is fixedly installed with an installation sleeve, the inner surface of the installation sleeve is engaged with the outer surface of the cleaning brush installation column, and the inside of the installation sleeve is fixedly installed with an elastic folding plate, the lower end of the elastic flap is in contact with the upper end of the telescopic elastic clip pin, the elastic flap and the installation sleeve use elasticity to limit the cleaning brush installation column and the telescopic elastic clip pin, and the elastic support telescopic rod utilizes The elastic force supports the inside of the rotating snap-in rod. By pinching and rotating the snap-in rod to make it rotate, the debris magnetic strip can be removed from the mounting horizontal plate for cleaning.

The further improvement of the technical solution of the present invention is that: one side of the debris cleaning brush is provided with a debris magnetic strip, the upper end of the debris magnetic strip is hinged with a rotating clamping rod, and the upper end of the rotating clamping rod It is clamped with the inner surface of the installation horizontal plate, and the inner side of the rotating clamping rod is fixedly installed with an elastic support telescopic rod. The glass installation frame plays the role of installing and observing the transparent glass. Observing the transparent glass is convenient for observing the working conditions of the processing equipment, and at the same time Reserve space for the installation of the protective net.

The further improvement of the technical solution of the present invention lies in that: the outer side wall of the outer glass installation frame is fixedly equipped with observation transparent glass, the upper end of the protective net is provided with a snap-in strip, and the inner wall of the snap-in strip is connected to the inner wall of the frame of the protective net. A spring rod is fixedly installed between them, the outer surface of the clamping strip is clamped with the inner side wall of the outer glass installation frame, and the inner side wall of the outer glass installation frame is provided with an installation card slot that is compatible with the clamping strip. The protective net is clamped with the outer glass installation frame through the clamping strips and spring rods, which protects the protective net, prevents the observation transparent glass from being damaged, and prolongs the service life of the observation transparent glass.

Owing to adopting above-mentioned technical scheme, relative to the prior art, the technical progress of the present invention is:

1. The present invention provides a CNC machine tool with a safety protection device. By installing a safety protection mechanism, the motor drives the double-ended threaded rod to rotate, and the safety protection cover makes the safety protection cover work under the cooperation of the limit rod and the double-ended threaded rod. Relatively moving, the safety shields are close to each other and form a complete shield, which can protect the debris splashed by the workpiece of the processing equipment, and the stable support mechanism provides auxiliary support for the safety shield, supporting the clamping plate and the safety shield Carry out clamping, the elastic winding rod cooperates with the inner sliding rod to use the elasticity to make the telescopic sleeve rod elongate to support the supporting clamp, and at the same time shrink when the safety shield moves backward to ensure the stable operation of the safety shield.

2. The present invention provides a CNC machine tool with a safety protection device. By installing the safety protection mechanism, the motor two works to rotate the threaded rod, and the limit installation sleeve plays the role of installing the threaded rod and limiting the installation of the horizontal plate. The horizontal plate moves down under the action of the threaded rod so that the debris cleaning brush and the debris magnetic strip cooperate with each other. The debris cleaning brush cleans the debris on the surface of the CNC machine tool, and the debris magnetic strip uses the principle of magnetic attraction to remove the debris. Adsorption is carried out to prevent debris from being dispersed. The cleaning brush installation column can be removed from the installation sleeve by pressing the telescopic elastic snap-in pin. The elastic folding plate and the installation sleeve use elasticity to limit the cleaning brush installation post and the telescopic elastic snap-in pin. The role of the elastic support telescopic rod is to use the elastic force to support the inside of the rotating clamping rod. By pinching and rotating the clamping rod to make it rotate, the debris magnetic strip can be removed from the mounting horizontal plate for cleaning.

3. The present invention provides a CNC machine tool with a safety protection device. By installing the observation window mechanism, the outer glass installation frame plays the role of installing and observing the transparent glass. Observing the transparent glass is convenient for observing the working conditions of the processing equipment, and at the same time it is used for the protective net. The installation space is reserved, and the protective net is connected with the outer glass installation frame through the clamping strip and the spring rod, which protects the protective net, prevents the observation transparent glass from being damaged, and prolongs the service life of the observation transparent glass.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a schematic back view of the structure of the present invention;

Fig. 3 is the open schematic view of structure of the present invention;

Fig. 4 is a schematic diagram of a structural safety protection mechanism of the present invention;

Fig. 5 is a schematic cross-sectional view of the structural observation window mechanism of the present invention;

Fig. 6 is a schematic cross-sectional view of the structural safety shield of the present invention.

In the figure: 1. Main body of CNC machine tool for safety protection device; 11. CNC machine tool; 12. Processing equipment; 2. Safety protection mechanism; 21. Safety protection cover; 22. Motor one; 221. Double-ended threaded rod; Rod; 23, stable support mechanism; 231, support clamping plate; 232, telescopic sleeve rod; 233, inner sliding rod; 234, elastic winding rod; 24, internal cleaning mechanism; 241, limit installation sleeve; 242, motor two; 2421, threaded rod; 243, installation horizontal plate; 244, debris cleaning brush; 2441, cleaning brush installation column; Bar; 2451, rotating clamping rod; 2452, elastic support telescopic rod; 3, observation window mechanism; 31, outer glass installation frame; 311, observing transparent glass; 32, protective net; 321, clamping strip; 322, spring rod .

detailed description

Below in conjunction with embodiment the present invention is described in further detail:

Example 1

As shown in Figure 1-6, the present invention provides a kind of numerical control machine tool with safety protection device, comprises safety protection device numerical control machine tool main body 1, safety protection device numerical control machine tool main body 1 comprises numerical control machine tool 11, the upper surface of numerical control machine tool 11 The processing equipment 12 is fixedly installed, and the outside of the processing equipment 12 is provided with a safety protection mechanism 2, and one side of the safety protection mechanism 2 is provided with an observation window mechanism 3, and the safety protection mechanism 2 includes a safety protection cover 21, a motor 22, a stable support Mechanism 23 and internal cleaning mechanism 24, the lower surface of safety shield 21 is in contact with the upper surface of numerical control machine tool 11, observation window mechanism 3 includes outer glass installation frame 31 and protective net 32, one side surface of outer glass installation frame 31 It is fixedly connected with the side surface of the safety shield 21, the lower surface of the motor one 22 is fixedly connected with the upper surface of the CNC machine tool 11, the output shaft of the motor one 22 is fixedly equipped with a double-ended threaded rod 221, and one end of the double-ended threaded rod 221 is connected to the The surface of the numerically controlled machine tool 11 is rotationally connected, and one side of the double-ended threaded rod 221 is provided with a limiting rod 222. The outer surface of 221 is threaded, the inner wall of the safety shield 21 is slidingly connected with the outer surface of the limit rod 222, and the stable support mechanism 23 includes a support clamp 231, and the side surface of the support clamp 231 is connected to the outside of the safety shield 21. The surfaces are clamped, the motor 1 22 works to drive the double-ended threaded rod 221 to rotate, and the safety shield 21 moves relative to the safety shield 21 under the cooperation of the limit rod 222 and the double-ended threaded rod 221, and the safety shields 21 are close to each other and merged. A complete protective cover is formed to protect the debris splashed by the workpiece processed by the processing equipment 12. The stable support mechanism 23 provides auxiliary support for the safety protective cover 21. Cooperating with the inner sliding rod 233, the winding rod 234 and the elastic sleeve rod 232 are stretched to support the support clamp 231, and at the same time shrink when the safety shield 21 moves backward, so as to ensure the stable operation of the safety shield 21.

Example 2

As shown in Figures 1-6, on the basis of Embodiment 1, the present invention provides a technical solution: a telescopic sleeve rod 232 is fixedly installed on the outside of the support clamp 231, and one end of the telescopic sleeve rod 232 is connected to the surface of the CNC machine tool 11 Fixedly connected, the inside of the telescopic sleeve rod 232 is fixedly installed with an inner sliding rod 233, the outer surface of the inner sliding rod 233 is slidingly connected with the inner surface of the telescopic sleeve rod 232, and the outer surface of the telescopic sleeve rod 232 is sleeved with an elastic winding rod 234, One end of the elastic winding rod 234 is in contact with one end of the sliding rod of the telescopic sleeve rod 232, the outer surface of the elastic winding rod 234 is in contact with the inner surface of the telescopic sleeve rod 232, the motor two 242 works to make the threaded rod 2421 rotate, and the limit installation sleeve 241 plays the role of installing the threaded rod 2421 and limiting the installation horizontal plate 243. The installation horizontal plate 243 moves down under the action of the threaded rod 2421 so that the debris cleaning brush 244 cooperates with the debris magnetic suction strip 245, and the debris The cleaning brush 244 cleans the debris on the surface of the CNC machine tool 11 , and the debris magnetic strip 245 absorbs the debris by using the magnetic principle to prevent the debris from being dispersed.

Example 3

As shown in Figures 1-6, on the basis of Embodiment 1, the present invention provides a technical solution: the internal cleaning mechanism 24 includes a limited installation sleeve 241, the side surface of the limited installation sleeve 241 and the side surface of the safety shield 21 The surface is fixedly connected, the lower surface of the limit mounting sleeve 241 is fixedly installed with a motor two 242, the output shaft of the motor two 242 is fixedly installed with a threaded rod 2421, and the upper end of the threaded rod 2421 is rotationally connected with the top of the inner surface of the limit mounting sleeve 241, The inboard of safety protection cover 21 is provided with and installs horizontal plate 243, and a side of installation horizontal plate 243 is fixedly installed with slide block, and the side wall of safety protection cover 21, limit installation sleeve 241 is provided with the restriction that fits with installation horizontal plate 243. Position chute, the inner wall of the slide block of the installation horizontal plate 243 is threadedly connected with the outer surface of the threaded rod 2421, and the cleaning brush installation post 2441 can be removed from the installation sleeve 2443 by pressing the telescopic elastic snap-in pin 2442, and the elastic folding plate 2444 and The installation sleeve 2443 uses elasticity to limit the position of the cleaning brush installation column 2441 and the telescopic elastic clamping pin 2442. The elastic support telescopic rod 2452 uses elastic force to support the inside of the rotating clamping rod 2451. By pinching and rotating the clamping rod 2451 Making it rotate can remove the debris magnetic strip 245 from the mounting horizontal plate 243 for cleaning.

Example 4

As shown in Figures 1-6, on the basis of Embodiment 1, the present invention provides a technical solution: a debris cleaning brush 244 is provided under the installation horizontal plate 243, and a cleaning brush 244 is fixedly installed on the upper surface of the debris cleaning brush 244. Brush installation post 2441, the inner activity of cleaning brush installation post 2441 is equipped with telescopic elastic snap-in pin 2442, the lower surface of installation horizontal plate 243 is fixedly installed with installation sleeve 2443, the inner side surface of installation sleeve 2443 and the outer surface of cleaning brush installation post 2441 The surface is clamped, and the inside of the installation sleeve 2443 is fixed with an elastic flap 2444. The lower end of the elastic flap 2444 is in contact with the upper end of the telescopic elastic snap pin 2442. One side of the debris cleaning brush 244 is provided with a debris magnetic strip 245, the upper end of the debris magnetic suction bar 245 is hinged with a rotating clamping rod 2451, the upper end of the rotating clamping rod 2451 is clamped with the inner surface of the installation horizontal plate 243, and the inner side of the rotating clamping rod 2451 is fixedly installed with an elastic support telescopic rod 2452, the outer wall of the outer glass installation frame 31 is fixedly equipped with an observation transparent glass 311, the upper end of the protective net 32 is provided with a snap-in strip 321, and a spring rod is fixedly installed between the inner wall of the snap-in strip 321 and the frame inner wall of the protective net 32 322, the outer surface of the clamping strip 321 is clamped with the inner side wall of the outer glass installation frame 31, and the inner side wall of the outer glass installation frame 31 is provided with an installation slot matching the snapping strip 321, and the outer glass installation frame 31 To install and observe the function of the transparent glass 311, the observation of the transparent glass 311 is convenient for observing the working conditions of the processing equipment 12, and at the same time, a space for installation is reserved for the protective net 32. The frame 31 is clamped to protect the protective net 32, prevent the observation transparent glass 311 from being damaged, and prolong the service life of the observation transparent glass 311.

Let's talk about the working principle of the CNC machine tool with safety protection device in detail.

As shown in Figure 1-6, at first, the motor 1 22 works to drive the double-ended threaded rod 221 to rotate, and the safety shield 21 makes the safety shield 21 move relative to each other under the cooperation of the limit rod 222 and the double-ended threaded rod 221. The protective covers 21 are close to each other and combined to form a complete protective cover, which can safely protect the debris splashed by the workpiece processed by the processing equipment 12. Then, the protective net 32 is clamped with the outer glass installation frame 31 through the clamping strip 321 and the spring rod 322 , to protect the protective net 32, and finally, the installation horizontal plate 243 moves down under the action of the threaded rod 2421 so that the debris cleaning brush 244 cooperates with the debris magnetic suction strip 245, and the debris cleaning brush 244 is on the CNC machine tool. The debris on the surface of 11 is cleaned, and the debris magnetic strip 245 utilizes the principle of magnetic attraction to absorb the debris.

The above has generally described the present invention in detail, but some modifications or improvements can be made on the basis of the present invention, which are obvious to those skilled in the art. Therefore, modifications or improvements without departing from the spirit of the present invention are within the protection scope of the present invention.

Claims (10)

1. The utility model provides a digit control machine tool with safety device, includes safety device digit control machine tool main part (1), safety device digit control machine tool main part (1) is including digit control machine tool (11), the last fixed surface of digit control machine tool (11) installs processing equipment (12), its characterized in that: the outside of processing equipment (12) is provided with safety protection mechanism (2), one side of safety protection mechanism (2) is provided with observation window mechanism (3), safety protection mechanism (2) cleans mechanism (24) including safety protection casing (21), motor (22), stabilizing support mechanism (23) and inside, the lower surface of safety protection casing (21) contacts with the upper surface of digit control machine tool (11), observation window mechanism (3) is including outer glass installing frame (31) and protection network (32), a side surface of outer glass installing frame (31) and the side surface fixed connection of safety protection casing (21).

2. The numerical control machine tool with the safety protection device according to claim 1, characterized in that: the lower surface of a motor (22) is connected with the last fixed surface of digit control machine tool (11), the output shaft fixed mounting of a motor (22) has double-threaded rod (221), the one end of double-threaded rod (221) is connected with the surperficial rotation of digit control machine tool (11), one side of double-threaded rod (221) is provided with gag lever post (222), the both ends of gag lever post (222) are connected with the fixed surface of digit control machine tool (11) respectively.

3. The numerical control machine tool with the safety protection device according to claim 1, characterized in that: the outer surface threaded connection of the inner wall of safety protection cover (21) and double threaded rod (221), the inner wall of safety protection cover (21) and the surface sliding connection of gag lever post (222), stabilize supporting mechanism (23) including supporting cardboard (231), the outside surface joint of the side surface of supporting cardboard (231) and safety protection cover (21).

4. The numerical control machine tool with the safety protection device according to claim 3, characterized in that: the outside fixed mounting who supports cardboard (231) has flexible loop bar (232), the one end of flexible loop bar (232) is connected with the fixed surface of digit control machine tool (11), the inside fixed mounting of flexible loop bar (232) has interior slide bar (233), the surface of interior slide bar (233) and the internal surface sliding connection of flexible loop bar (232).

5. The numerical control machine tool with the safety protection device according to claim 4, characterized in that: the surface of flexible loop bar (232) cup joints elasticity around pole (234), the one end of elasticity around pole (234) contacts with the slide bar one end of flexible loop bar (232), the surface of elasticity around pole (234) contacts with the internal surface of flexible loop bar (232).

6. The numerical control machine tool with the safety protection device according to claim 1, characterized in that: the internal cleaning mechanism (24) comprises a limiting mounting sleeve (241), the side surface of the limiting mounting sleeve (241) is fixedly connected with the side surface of the safety protection cover (21), a second motor (242) is fixedly mounted on the lower surface of the limiting mounting sleeve (241), a threaded rod (2421) is fixedly mounted on an output shaft of the second motor (242), and the upper end of the threaded rod (2421) is rotatably connected with the top of the inner surface of the limiting mounting sleeve (241).

7. The numerical control machine tool with the safety protection device according to claim 1, characterized in that: the safety protection cover is characterized in that an installation transverse plate (243) is arranged on the inner side of the safety protection cover (21), a sliding block is fixedly installed on one side of the installation transverse plate (243), a limiting sliding groove matched with the installation transverse plate (243) is formed in the side walls of the safety protection cover (21) and the limiting installation sleeve (241), and the inner wall of the sliding block of the installation transverse plate (243) is in threaded connection with the outer surface of the threaded rod (2421).

8. The numerical control machine tool with the safety protection device according to claim 7, characterized in that: the utility model discloses a cleaning brush, including installation horizontal plate (243), upper surface fixed mounting of debris cleaning brush (244) has cleaning brush erection column (2441), the inside movable mounting of cleaning brush erection column (2441) has flexible elasticity joint round pin (2442), the lower fixed surface of installation horizontal plate (243) installs installation cover (2443), the interior surface of installation cover (2443) and the surface joint of cleaning brush erection column (2441), the inside fixed mounting of installation cover (2443) has elasticity folded plate (2444), the lower extreme of elasticity folded plate (2444) contacts with the upper end of flexible elasticity joint round pin (2442).

9. The numerical control machine tool with the safety protection device according to claim 8, characterized in that: one side of the debris cleaning brush (244) is provided with a debris magnetic attraction strip (245), the upper end of the debris magnetic attraction strip (245) is hinged with a rotating clamping rod (2451), the upper end of the rotating clamping rod (2451) is clamped with the inner surface of an installation transverse plate (243), and an elastic support telescopic rod (2452) is fixedly installed on the inner side of the rotating clamping rod (2451).

10. The numerical control machine tool with the safety protection device according to claim 1, characterized in that: outer glass installing frame's (31) lateral wall fixed mounting has observation clear glass (311), the upper end of protection network (32) is provided with joint strip (321), fixed mounting has spring beam (322) between the inner wall of joint strip (321) and the frame inner wall of protection network (32), the surface of joint strip (321) and the inside wall joint of outer glass installing frame (31), the inside wall of outer glass installing frame (31) is provided with the installation slot with joint strip (321) looks adaptation.

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