High-precision numerical control machine tool capable of preventing cutter collision

Abstract

The utility model provides a high-precision numerical control machine tool capable of preventing a cutter from being collided, and relates to the field of high-precision numerical control machine tools capable of preventing the cutter from being collided, the high-precision numerical control machine tool comprises a machine tool assembly, the machine tool assembly comprises a shell and a numerical control machine tool host, the numerical control machine tool host is installed on the surface of the shell, and a saddle is installed in an inner cavity of the shell. A moving assembly is installed on the front face of the saddle, and a limiting assembly is installed on the surface of the moving assembly. By arranging the moving assembly and the limiting assembly, the effect of limiting the stroke of the machining table is achieved, and therefore it can be guaranteed that the safe distance is kept between the machining table and a cutter, and the situation that the machining table collides with the cutter when moving and consequently a machine tool is damaged is avoided; the first infrared distance measuring sensor, the contact type sensor and the second infrared distance measuring sensor monitor the machining table in real time, signals can be sent to the numerical control machine tool main machine in time when collision occurs, equipment is shut down in time through the numerical control machine tool main machine, and therefore losses are reduced.

Description

Technical Field

[0001] This utility model belongs to the field of high-precision CNC machine tools with anti-collision blades, specifically a high-precision CNC machine tool with anti-collision blades. Background Technology

[0002] High-precision CNC machine tools are CNC machine tools with extremely high machining accuracy, typically used to process high-requirement parts, such as products in aerospace, medical devices, and precision instruments. The machining accuracy of high-precision CNC machine tools can usually reach the micron level or even higher. During machining, the machine tool is prone to tool collision. The reasons for tool collision in CNC machine tools are varied, including improper operation, programming errors, parameter setting errors, improper program interruption handling, manual temporary tool change errors, machine tool failure, workpiece material defects, clamping factors, and misoperation. To avoid tool collision accidents, anti-collision mechanisms are added to the machine tool to limit the phenomenon of tool collision.

[0003] According to Chinese Patent Application No. 202311156554.6, a high-precision CNC machine tool with anti-collision tool is disclosed, including a moving mechanism and a tool holder mounted on the moving mechanism. The tool holder is equipped with a rotary drive motor, a rotary shaft, and an anti-collision mechanism. The anti-collision mechanism includes a fixed shaft, a buffer cylinder, and a first transmission shaft. By moving upward along the axis of the fixed shaft and rotating itself, the buffer cylinder can effectively dissipate the impact force generated by the collision, reduce the damage to the rotary shaft caused by the collision between the tool and the fixture, reduce the impact of the collision on the equipment, extend the service life of the equipment, ensure the machining accuracy of the equipment, and enable the equipment to cope with the force generated by the collision in more situations, thus improving the application scenarios of the device. At the same time, the setting of the first transmission shaft driven by the rotary shaft ensures that the main shaft of the tool holder, i.e., the rotary shaft, will not directly collide with the fixture, reducing the damage to the equipment caused by the damage to the main shaft. The first transmission shaft is easy to replace and has low repair costs.

[0004] Existing technology effectively solves the problem that when the tool moves along the cutting path, the reaction force generated during impact is not in the same direction as the sliding direction of the support plate. This can cause the support plate to jam or become unable to move when dealing with impact forces. It still cannot buffer the collision between the tool and the fixture. It has the advantages of preventing tool collision and reducing damage to the rotary axis. However, when malfunctions such as improper operation, programming errors, incorrect parameter settings, or program interruption occur, the machining table will move along the saddle, causing the tool to collide with the workpiece or the machining table. Moreover, the machine tool cannot stop in time after the collision, which can easily cause damage to the machine tool.

[0005] In summary, this utility model provides a high-precision CNC machine tool with anti-collision blades to solve the above problems. Utility Model Content

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0007] A high-precision CNC machine tool with a collision-resistant blade includes a machine tool assembly. The machine tool assembly includes a housing and a CNC machine tool main unit. The CNC machine tool main unit is mounted on the surface of the housing. A saddle is installed inside the housing. A moving component is mounted on the front of the saddle. A limit component is mounted on the surface of the moving component. The moving component is used to adjust the limiting distance of the limit component. The limit component is used for limiting the machine tool. The moving component includes a fixed plate, a support plate, a lead screw, a slide block, a protective cover, a servo motor, a worm gear, a worm wheel, and a transmission rod. The lead screw and slide block are used to drive the limit component to move. The servo motor, worm gear, worm wheel, and transmission rod are used to drive the lead screw to rotate. The limiting assembly includes a vertical plate, a first infrared ranging sensor, a contact sensor, and a second infrared ranging sensor. The vertical plate is fixed to the top of the slide. The first infrared ranging sensor and the contact sensor are installed on the upper end of one side of the vertical plate, and the second infrared ranging sensor is installed on the lower end of the other side of the vertical plate. The output ends of the first infrared ranging sensor, the contact sensor, and the second infrared ranging sensor are all connected to the input end of the CNC machine tool host. The output end of the CNC machine tool host is connected to the input end of the servo motor.

[0008] Furthermore, in this utility model, the fixing plate and the support plate are respectively fixed to both ends of the front of the saddle, one end of the lead screw is movably connected to the fixing plate through a bearing, and the slide is sleeved on the surface of the lead screw and threadedly connected to the lead screw.

[0009] Furthermore, in this utility model, the worm gear, worm wheel, and transmission rod are all installed in the inner cavity of the protective cover, the protective cover is fixedly connected to the support plate, and the servo motor is fixedly connected to the saddle.

[0010] Furthermore, in this utility model, the output shaft of the servo motor passes through the inner cavity of the protective cover and is connected to the worm gear drive. The worm gear meshes with the worm wheel, and both the worm gear and the worm wheel are movably connected to the inner wall of the protective cover through bearings. One end of the transmission rod is fixedly connected to the worm wheel, and the other end of the transmission rod passes through the support plate and is connected to the lead screw drive.

[0011] Furthermore, in this utility model, the machine tool assembly also includes an audible and visual alarm, a machining table, and a spindle. The machining table is mounted on the top of the saddle, and the spindle is mounted on one side of the inner cavity of the housing.

[0012] Furthermore, in this invention, the audible and visual alarm is fixed to the top of the housing, and the output end of the CNC machine tool host is connected to the input end of the audible and visual alarm.

[0013] Furthermore, in this utility model, the moving component also includes a slide rail and a slider. The slide rail is fixed to the front of the saddle, the slider is located on the surface of the slide rail and is slidably connected to the slide rail, and the slide block is fixedly connected to the slider.

[0014] Beneficial effects: This utility model has the following beneficial effects:

[0015] This invention, by setting up a moving component and a limiting component, effectively restricts the travel of the machining table, thereby ensuring a safe distance between the machining table and the cutting tool and preventing collisions between the machining table and the cutting tool that could damage the machine tool. The first infrared ranging sensor, the contact sensor, and the second infrared ranging sensor monitor the machining table in real time. In the event of a collision, a signal can be sent to the CNC machine tool host in a timely manner, allowing the CNC machine tool host to shut down the equipment promptly and reduce losses. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0017] Figure 2 This is a cross-sectional structural diagram of the outer shell of this utility model;

[0018] Figure 3 This is a schematic diagram of the separated state structure of the moving component and the limiting component of this utility model;

[0019] Figure 4 This is a schematic diagram of the system flow of this utility model.

[0020] In the picture:

[0021] 1. Machine tool components; 101. Housing; 102. CNC machine tool host; 103. Audible and visual alarm; 104. Saddle; 105. Machining table; 106. Spindle; 2. Moving components; 201. Fixed plate; 202. Support plate; 203. Lead screw; 204. Slide; 205. Protective cover; 206. Servo motor; 207. Worm gear; 208. Worm wheel; 209. Transmission rod; 210. Slide rail; 211. Slider; 3. Limiting components; 301. Vertical plate; 302. First infrared ranging sensor; 303. Contact sensor; 304. Second infrared ranging sensor. Detailed Implementation

[0022] To better understand the technical content of this utility model, specific embodiments are described below in conjunction with the accompanying drawings. Various aspects of this utility model are described in this disclosure with reference to the accompanying drawings, which illustrate numerous illustrative embodiments. The embodiments of this disclosure are not necessarily defined to include all aspects of this utility model. It should be understood that the various concepts and embodiments described above, as well as those described in more detail below, can be implemented in any of many ways, because the concepts and embodiments disclosed in this utility model are not limited to any particular implementation. Furthermore, some aspects of this utility model can be used alone or in any suitable combination with other aspects disclosed in this utility model.

[0023] Example 1

[0024] like Figure 1-4 As shown, this is the first embodiment of the present invention. This embodiment provides a high-precision CNC machine tool with a collision-resistant blade, including a machine tool assembly 1. The machine tool assembly 1 includes a housing 101 and a CNC machine tool host 102. The CNC machine tool host 102 is mounted on the surface of the housing 101. A saddle 104 is mounted in the inner cavity of the housing 101. A moving assembly 2 is mounted on the front of the saddle 104. A limit assembly 3 is mounted on the surface of the moving assembly 2. The moving assembly 2 is used to adjust the limit distance of the limit assembly 3. The limit assembly 3 is used for limiting the machine tool. The moving assembly 2 includes a fixed plate 201, a support plate 202, a lead screw 203, a slide 204, a protective cover 205, a servo motor 206, a worm gear 207, a worm wheel 208, and a transmission rod 209. The lead screw 203 and the slide 204 are used to drive the limit assembly. The component 3 moves, and the servo motor 206, worm gear 207, worm wheel 208 and transmission rod 209 drive the lead screw 203 to rotate. The limiting component 3 includes a vertical plate 301, a first infrared ranging sensor 302, a contact sensor 303 and a second infrared ranging sensor 304. The vertical plate 301 is fixed to the top of the slide 204. The first infrared ranging sensor 302 and the contact sensor 303 are installed on the upper end of one side of the vertical plate 301, and the second infrared ranging sensor 304 is installed on the lower end of the other side of the vertical plate 301. The output ends of the first infrared ranging sensor 302, the contact sensor 303 and the second infrared ranging sensor 304 are all connected to the input end of the CNC machine tool host 102. The output end of the CNC machine tool host 102 is connected to the input end of the servo motor 206.

[0025] like Figure 1-4As shown, the servo motor 206, worm gear 207, worm wheel 208, and transmission rod 209 work together to drive the lead screw 203 to rotate. When the lead screw 203 rotates, it drives the limit component 3 to move, thereby adjusting the monitoring position of the limit component 3. The position of the limit component 3 can be adjusted according to different processing requirements, effectively improving the flexibility of its use. The first infrared distance sensor 302 is used to monitor the distance between the vertical plate 301 and the fixed plate 201, enabling precise adjustment. The first infrared distance sensor 302 and the contact sensor 303 are used to monitor the movement position of the processing table 105. The CNC machine tool host 102 sets a limit value for the distance between the processing table 105 and the first infrared distance sensor 302 to prevent the processing table 105 from moving. If a collision occurs with the cutting tool, and the first infrared ranging sensor 302 malfunctions and fails to monitor the fault, when the movement position of the machining table 105 approaches the set threshold and the contact point of the contact sensor 303 contacts the machining table 105, the equipment will experience a tool collision. At the same time that the contact sensor 303 contacts the machining table 105, the contact sensor 303 sends a signal to the CNC machine tool host 102. The CNC machine tool host 102 controls the machine tool to stop running, thereby stopping the equipment in time and reducing equipment damage. The CNC machine tool host 102 can adopt the control system of the high-precision CNC machine tool itself. The first infrared ranging sensor 302 and the second infrared ranging sensor 304 can both be KL800 models, and the contact sensor 303 can be JC-TM803 models.

[0026] Example 2

[0027] Reference Figure 1-3 This is the second embodiment of the present invention, which is based on the previous embodiment.

[0028] In this embodiment, the fixing plate 201 and the support plate 202 are respectively fixed to the two ends of the front of the saddle 104. One end of the lead screw 203 is movably connected to the fixing plate 201 through a bearing. The slide 204 is sleeved on the surface of the lead screw 203 and is threadedly connected to the lead screw 203.

[0029] The worm 207, worm wheel 208 and transmission rod 209 are all installed in the inner cavity of the protective cover 205. The protective cover 205 is fixedly connected to the support plate 202, and the servo motor 206 is fixedly connected to the saddle 104.

[0030] The output shaft of the servo motor 206 passes through the inner cavity of the protective cover 205 and is connected to the worm gear 207 for transmission. The worm gear 207 meshes with the worm wheel 208. Both the worm gear 207 and the worm wheel 208 are movably connected to the inner wall of the protective cover 205 through bearings. One end of the transmission rod 209 is fixedly connected to the worm wheel 208, and the other end of the transmission rod 209 passes through the support plate 202 and is connected to the lead screw 203 for transmission.

[0031] The moving component 2 also includes a slide rail 210 and a slider 211. The slide rail 210 is fixed to the front of the saddle 104, and the slider 211 is located on the surface of the slide rail 210 and is slidably connected to the slide rail 210. The slide block 204 is fixedly connected to the slider 211.

[0032] like Figure 1-3 As shown, the output shaft of the servo motor 206 rotates, causing the worm gear 207 to rotate. When the worm gear 207 rotates, it drives the worm wheel 208 to rotate. When the worm wheel 208 rotates, it drives the lead screw 203 to rotate via the transmission rod 209. When the lead screw 203 rotates, it drives the slide 204 to move. When the slide 204 moves, it drives the slider 211 to move along the surface of the slide rail 210. The slide rail 210 and the slider 211 cooperate to limit the movement trajectory of the slide 204. While the slide 204 moves, it drives the limiting component 3 to move. When the output shaft of the servo motor 206 rotates forward, it drives the slide 204 to move to one side. When the output shaft of the servo motor 206 rotates in reverse, it drives the slide 204 to move to the other side, thereby adjusting the limited position of the limiting component 3.

[0033] Example 3

[0034] Reference Figure 1 and 2 This is the third embodiment of the present invention, which is based on the first two embodiments.

[0035] In this embodiment, the machine tool assembly 1 also includes an audible and visual alarm 103, a processing table 105, and a spindle 106. The processing table 105 is mounted on the top of the saddle 104, and the spindle 106 is mounted on one side of the inner cavity of the housing 101.

[0036] The audible and visual alarm 103 is fixed to the top of the housing 101, and the output end of the CNC machine tool host 102 is connected to the input end of the audible and visual alarm 103.

[0037] like Figure 1 and 2 As shown, the audible and visual alarm 103 is used to issue an alarm in time when a collision occurs, so as to remind the staff to deal with it in time. The spindle 106 is used to install the cutting tool. The machining table 105 is used to provide a machining platform for the workpiece. A fixture can be installed on the top of the machining table 105 to fix the workpiece. The movement of the machining table 105 can be powered by mechanical transmission.

[0038] In use, the output shaft of the servo motor 206 rotates, driving the worm gear 207 to rotate. The worm gear 207 rotates, driving the worm wheel 208 to rotate. The worm wheel 208 rotates, driving the lead screw 203 to rotate via the transmission rod 209. The lead screw 203 rotates, driving the slide 204 to move. The slide 204 moves, causing the slider 211 to move along the surface of the slide rail 210. Simultaneously, the slide 204 moves, causing the limiting component 3 to move. A clockwise rotation of the servo motor 206 moves the slide 204 to one side, while a counter-clockwise rotation moves the slide 204 to the other side. This allows adjustment of the limiting position of the limiting component 3. The distance between the machining table 105 and the first infrared ranging sensor 302 is limited by the CNC machine tool host 102. The value allows for limiting the movement position of the machining table 105. The first infrared ranging sensor 302 is used to monitor the distance between the vertical plate 301 and the fixed plate 201, thereby enabling precise adjustment. The first infrared ranging sensor 302 and the contact sensor 303 are used to monitor the movement position of the machining table 105. If the first infrared ranging sensor 302 malfunctions and fails to monitor, when the movement position of the machining table 105 approaches the set threshold, and the contact point of the contact sensor 303 contacts the machining table 105, the equipment will collide. At the same time as the contact sensor 303 contacts the machining table 105, the contact sensor 303 sends a signal to the CNC machine tool host 102, and the CNC machine tool host 102 controls the machine tool to stop running, thereby stopping the equipment in time and reducing equipment damage.

[0039] All standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The control method is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art and is common knowledge in the field. Since this application is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail in this application.

[0040] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Those skilled in the art to which this invention pertains can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of this invention shall be determined by the claims.

Claims

1. A high-precision numerical control machine for anti-collision knives, comprising a machine assembly (1), characterized in that: The machine tool assembly (1) comprises a housing (101) and a numerical control machine tool main machine (102), the numerical control machine tool main machine (102) is installed on the surface of the housing (101), the inner cavity of the housing (101) is provided with a saddle (104), the front surface of the saddle (104) is provided with a moving assembly (2), the surface of the moving assembly (2) is provided with a limiting assembly (3), the moving assembly (2) is used for adjusting the limiting distance of the limiting assembly (3), and the limiting assembly (3) is used for machine tool limiting, the moving assembly (2) comprises a fixed plate (201), a supporting plate (202), a lead screw (203), a sliding seat (204), a protective cover (205), a servo motor (206), a worm (207), a worm gear (208) and a transmission rod (209), the lead screw (203) and the sliding seat (204) are used for driving the limiting assembly (3) to move, the servo motor (206), the worm (207), the worm gear (208) and the transmission rod (209) are used for driving the lead screw (203) to rotate, the limiting assembly (3) comprises a vertical plate (301), a first infrared distance sensor (302), a contact sensor (303) and a second infrared distance sensor (304), the vertical plate (301) is fixed to the top of the sliding seat (204), the first infrared distance sensor (302) and the contact sensor (303) are installed on the upper end of one side of the vertical plate (301), the second infrared distance sensor (304) is installed on the lower end of the other side of the vertical plate (301), and the output ends of the first infrared distance sensor (302), the contact sensor (303) and the second infrared distance sensor (304) are connected with the input end of the numerical control machine tool main machine (102), and the output end of the numerical control machine tool main machine (102) is connected with the input end of the servo motor (206).

2. The high precision CNC machine for anti-collision knife as claimed in claim 1, wherein: The fixed plate (201) and the supporting plate (202) are respectively fixed to the two ends of the front surface of the saddle (104), one end of the lead screw (203) is movably connected with the fixed plate (201) through a bearing, and the sliding seat (204) is sleeved on the surface of the lead screw (203) and is in threaded connection with the lead screw (203).

3. The high precision CNC machine tool for preventing collision of the cutting tool according to claim 1, wherein: The worm (207), the worm gear (208) and the transmission rod (209) are all installed in the inner cavity of the protective cover (205), the protective cover (205) is fixedly connected with the supporting plate (202), and the servo motor (206) is fixedly connected with the saddle (104).

4. The high precision CNC machine tool for preventing collision of the cutting tool according to claim 1, wherein: The output shaft of the servo motor (206) penetrates into the inner cavity of the protective cover (205) and is in transmission connection with the worm (207), the worm (207) is in engagement with the worm gear (208), the worm (207) and the worm gear (208) are movably connected with the inner wall of the protective cover (205) through bearings, one end of the transmission rod (209) is fixedly connected with the worm gear (208), and the other end of the transmission rod (209) penetrates through the supporting plate (202) and is in transmission connection with the lead screw (203).

5. The high precision CNC machine tool for anti-collision knife as claimed in claim 1, wherein: The machine tool assembly (1) further comprises an acousto-optic alarm (103), a machining table (105) and a main shaft (106), wherein the machining table (105) is installed on the top of the saddle (104), and the main shaft (106) is installed on one side of the inner cavity of the shell (101).

6. The high precision NC machine tool for preventing collision of a tool according to claim 5, wherein: The acousto-optic alarm (103) is fixed on the top of the shell (101), and the output end of the numerical control machine tool main machine (102) is connected with the input end of the acousto-optic alarm (103).

7. The high precision CNC machine tool for anti-collision knife as claimed in claim 1, wherein: The moving assembly (2) further comprises a sliding rail (210) and a sliding block (211), wherein the sliding rail (210) is fixed on the front face of the saddle (104), the sliding block (211) is located on the surface of the sliding rail (210) and is in sliding connection with the sliding rail (210), and the sliding seat (204) is fixedly connected with the sliding block (211).

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