Numerical control machine tool with automatic tool changing function

Abstract

The utility model relates to the technical field of numerical control machine tools, in particular to an automatic tool changing numerical control machine tool which comprises a numerical control machine tool shell, and a tool maintaining assembly is arranged at the lower left end in the numerical control machine tool shell and comprises a tool bearing base fixed to the lower left end in the numerical control machine tool shell. A tool changing assembly is arranged in the tool bearing base and above the tool bearing base. Three maintenance sponge barrels are movably installed in the tool rest, and injection pipes corresponding to the maintenance sponge barrels are arranged in the tool bearing base and on the upper end face of the tool bearing base in a penetrating mode. According to the numerical control cutting tool maintenance device, it can be guaranteed that a tool can still keep good cutting performance when used next time by smearing anti-rust oil, and meanwhile the maintenance sponge barrel can absorb and wipe impurities such as cutting fluid, greasy dirt and metal filings attached to the surface of the numerical control tool due to the fact that the tool makes contact with the maintenance sponge barrel in the tool storage process; therefore, the maintenance effect of the numerical control cutter when the numerical control cutter is not used is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of numerical control machine tools, in particular to a numerical control machine tool with automatic tool change. Background Art

[0002] CNC machine tool cutting tools are a crucial component of CNC machining, directly impacting machining accuracy, efficiency, and quality. CNC machine tool cutting tools are diverse and can be categorized into various types based on different machining requirements and material properties, including but not limited to milling cutters, turning tools, drills, boring tools, and composite tools. CNC machine tools require different tool types when machining different workpieces.

[0003] The tool changing process on a CNC machine tool is a precise, multi-step operation, primarily categorized as manual, semi-automatic, or fully automatic. In fully automatic tool changing, the machine first automatically moves to the tool change position, moving the spindle or tool magazine to that position. The CNC system then automatically controls the tool changer, placing the tool into the tool holder. Finally, the machine automatically resets the spindle or tool magazine back to the machining position. Fully automatic tool changing requires no human intervention and is highly efficient, making it suitable for applications requiring high production efficiency and frequent tool changes.

[0004] After searching, the application number is 202323064894.4, which is a CNC machine tool with automatic tool change. By setting a cleaning brush, before changing the tool, the tool holder rotates under the action of the transmission gear, and the waste chip tray and the cleaning brush are fixed, so as to clean the rotating tool. The cleaning brush can sweep the debris on the tool into the waste chip tray, and the tool is automatically cleaned in advance before changing the tool, without the need for manual cleaning, saving time and effort.

[0005] In the existing technical solutions, when replacing the tool, most of the time the tool is placed directly into the tool tray, or the debris on the tool is swept into the waste chip tray by a cleaning brush when the tool is replaced, and the tool is automatically cleaned in advance before the tool is changed. However, these operations cannot properly maintain the tool after use, and impurities such as cutting fluid, oil and metal chips attached to the surface of the tool will affect the cutting performance of the tool. Summary of the Invention

[0006] The purpose of this utility model is to provide a CNC machine tool with automatic tool changing, which can ensure that the tool still maintains good cutting performance when it is used next time by applying anti-rust oil. At the same time, the contact between the tool and the maintenance sponge tube during storage can enable the maintenance sponge tube to absorb and wipe impurities such as cutting fluid, oil stains and metal chips attached to the surface of the CNC tool, thereby improving the maintenance effect of the CNC tool when not in use, so as to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a CNC machine tool with automatic tool changing, comprising a CNC machine tool housing, a machining adjustment component provided inside the CNC machine tool housing, a tool maintenance component provided at the lower left end inside the CNC machine tool housing, the tool maintenance component comprising a tool bearing base fixed at the lower left end inside the CNC machine tool housing, a tool changing component provided inside and above the tool bearing base; the tool changing assembly comprising a tool holder fixedly mounted on the upper end face of the tool bearing base, three maintenance sponge cylinders movably installed inside the tool holder, and injection pipes corresponding to the maintenance sponge cylinders are provided inside and on the upper end face of the tool bearing base.

[0008] Preferably, the processing adjustment assembly includes an X-axial drive component installed on the bottom end surface of the inner shell of the CNC machine tool, the upper part of the X-axial drive component is connected to the Y-axial drive component, and the inner side of the Y-axial drive component is connected to the Z-axial drive component.

[0009] Preferably, the power output end of the Z-axis driving member is fixedly mounted with a bearing seat, the upper end surface of the bearing seat is fixedly mounted with a servo motor, and the power output end of the servo motor passes through the bearing seat and is fixedly connected with a CNC machining axis.

[0010] Preferably, the tool maintenance assembly further comprises an anti-rust oil tank provided on the upper end surface of the tool bearing base, a cylinder body is fixedly installed inside the tool bearing base, and a one-way oil inlet valve pipe is connected between the cylinder body and the anti-rust oil tank.

[0011] Preferably, a plug body is slidably fitted inside the cylinder body, a one-way valve hole is opened inside the plug body, a compression rod is fixedly connected to the upper end surface of the plug body, and the interior of the cylinder body is communicated with the injection pipe.

[0012] Preferably, an assembly seat is fixedly installed on the bottom end surface of the maintenance sponge cylinder, an oil groove is provided at the connection between the upper end surface of the assembly seat and the maintenance sponge cylinder, and an assembly slide groove is provided at the corresponding position of the tool bearing base and the assembly seat, and the assembly slide groove is slidably connected to the assembly seat.

[0013] Preferably, clamping rods are rotatably installed on both sides of the assembly seat, a clamping block is fixedly installed on the top of the clamping rod, a driving shaft is rotatably installed inside the assembly seat, and the driving shaft is located below the shaft wall inside the assembly seat and abuts against a rigid spring.

[0014] Preferably, a connecting rod is fixedly installed on the end of the driving shaft away from the assembly seat, and a control shaft is fixedly connected to the end of the connecting rod away from the driving shaft. A positioning top block corresponding to the control shaft is fixedly installed on the side wall of the assembly slide, and a limiting base fixed on the side wall of the assembly slide is provided below the positioning top block.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. The utility model enables anti-rust oil to be applied to the CNC tool through the contact between the tool and the maintenance sponge tube during storage. The anti-rust oil forms a protective film on the tool surface, effectively isolating the tool from contact with air, moisture and corrosive substances, thereby preventing the tool from rusting and corrosion. The application of anti-rust oil can ensure that the tool still maintains good cutting performance when it is used next time, avoiding the decline in cutting quality caused by rust or corrosion of the tool. At the same time, the contact between the tool and the maintenance sponge tube during storage can enable the maintenance sponge tube to absorb and wipe impurities such as cutting fluid, oil stains and metal chips attached to the surface of the CNC tool, thereby improving the maintenance effect of the CNC tool when it is not in use.

[0017] 2. The utility model can complete the replacement of cutting tools in a short time through automatic tool changing, thereby reducing the downtime of machine tools and improving production efficiency. Through automatic tool changing, the machine tool can continuously perform processing without manual intervention, thereby achieving continuity and high efficiency of production; automatic tool changing can accurately locate and replace cutting tools, reducing errors caused by manual operation, thereby improving processing accuracy. Automatic tool changing reduces the need for manual intervention and reduces dependence on operating workers, thereby saving labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is the overall structural view of the utility model;

[0020] Figure 2 This is a schematic diagram of the internal cross-sectional structure of the CNC machine tool housing of the present invention;

[0021] Figure 3 This is a schematic diagram of the internal structure of the CNC machine tool shell of the utility model;

[0022] Figure 4 This is a schematic diagram of the internal structure of the tool holder of the utility model;

[0023] Figure 5 This is a schematic diagram of the internal structure of the tool bearing base of the utility model;

[0024] Figure 6 This is a schematic diagram of the internal structure of the assembly slide of the utility model

[0025] Figure 7 This is a schematic diagram of the internal connection structure of the cylinder body of the utility model.

[0026] Description of reference numerals:

[0027] 1. CNC machine tool housing; 2. Machining adjustment assembly; 201. X-axis drive; 202. Y-axis drive; 203. Z-axis drive; 204. Bearing seat; 205. Servo motor; 206. CNC machining axis; 3. Tool maintenance assembly; 301. Tool bearing base; 302. Anti-rust oil tank; 303. Cylinder body; 304. Compression rod; 305. Injection pipe; 306. One-way oil inlet valve pipe; 307. Plug body; 308. One-way valve hole; 4. Tool changing assembly; 401. Tool holder; 402. Maintenance sponge tube; 403. Assembly seat; 404. Oil tank; 405. Clamping rod; 406. Clamping block; 407. Connecting rod; 408. Drive shaft; 409. Control shaft; 410. Rigidity spring; 411. Positioning top block; 412. Limit base; 413. Assembly slide. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] The utility model provides a technical solution:

[0030] See also Figure 1 、 Figure 2 、 Figure 4 、 Figure 6 and Figure 7A CNC machine tool with automatic tool change includes a CNC machine tool housing 1, a processing adjustment component 2 is provided inside the CNC machine tool housing 1, a tool maintenance component 3 is provided at the lower left end of the CNC machine tool housing 1, the tool maintenance component 3 includes a tool carrying base 301 fixed to the lower left end of the CNC machine tool housing 1, and a tool changing component 4 is provided inside and above the tool carrying base 301; the tool changing component 4 includes a tool holder 401 fixedly mounted on the upper end surface of the tool carrying base 301, three maintenance sponge cylinders 402 are movably installed inside the tool holder 401, and injection pipes 305 corresponding to the maintenance sponge cylinders 402 are penetrated inside and on the upper end surface of the tool carrying base 301, and an assembly seat 403 is fixedly installed on the bottom end surface of the maintenance sponge cylinder 402. An oil groove 404 is provided at the connection between the upper end surface of the assembly seat 403 and the maintenance sponge tube 402, and an assembly slide 413 is provided at the corresponding position of the tool bearing base 301 and the assembly seat 403, and the assembly slide 413 is slidably connected to the assembly seat 403. The tool maintenance assembly 3 also includes an anti-rust oil groove 302 provided on the upper end surface of the tool bearing base 301, and a cylinder body 303 is fixedly installed inside the tool bearing base 301, and a one-way oil inlet valve pipe 306 is connected between the cylinder body 303 and the anti-rust oil groove 302. A plug body 307 is slidably fitted inside the cylinder body 303, and a one-way valve hole 308 is provided inside the plug body 307. The upper end surface of the plug body 307 is fixedly connected to the compression rod 304, and the interior of the cylinder body 303 and the injection pipe 305 are communicated with each other.

[0031] By adopting the above technical solution, when in use, the used tool is placed in the maintenance sponge cylinder 402, and the extrusion when the tool is placed can compress the assembly seat 403, and the assembly seat 403 can squeeze the compression rod 304 by sliding downward in the assembly slide groove 413. The compression rod 304 is fixedly connected to the bottom end of the assembly seat 403, thereby realizing the driving of the compression rod 304. Through the downward movement and compression of the compression rod 304, the anti-rust oil at the bottom end of the cylinder body 303 can be squeezed through the plug body 307, so that the anti-rust oil flows into the upper end of the cylinder body 303 through the one-way valve hole 308. At the same time, the increase of the oil at the upper end of the interior can make the oil injected into the injection pipe 305, and the injection pipe 305 can spray the oil to the corresponding maintenance sponge cylinder 402 On the other hand, the maintenance sponge tube 402 can absorb the anti-rust oil sprayed during storage, and the anti-rust oil can be applied to the CNC tool through the contact between the tool and the maintenance sponge tube 402 during storage. The anti-rust oil can form a protective film on the surface of the tool, effectively isolating the tool from contact with air, moisture and corrosive substances, thereby preventing the tool from rusting and corrosion; and applying anti-rust oil can ensure that the tool still maintains good cutting performance when used next time, avoiding the reduction in cutting quality due to rust or corrosion of the tool. At the same time, the contact between the tool and the maintenance sponge tube 402 during storage can enable the maintenance sponge tube 402 to absorb and wipe impurities such as cutting fluid, oil stains and metal chips attached to the surface of the CNC tool, thereby improving the maintenance effect of the CNC tool when not in use.

[0032] Specifically, such as Figures 1 to 6 As shown, the processing adjustment component 2 includes an X-axial driving member 201 installed on the bottom end surface of the inner part of the CNC machine tool housing 1, and the Y-axial driving member 202 is connected to the top of the X-axial driving member 201, and the inner side of the Y-axial driving member 202 is connected to the Z-axial driving member 203; the power output end of the Z-axial driving member 203 is fixedly installed with a bearing seat 204, and the upper end surface of the bearing seat 204 is fixedly installed with a servo motor 205, and the power output end of the servo motor 205 passes through the bearing seat 204 and is fixedly connected to a CNC processing axis 206. The left and right sides of the assembly seat 403 are both rotatably installed with clamping rods 405, and the top of the clamping rod 405 is fixedly installed with a clamping block 406. The inside of the assembly seat 403 is rotatably installed with a driving shaft 408, and the driving shaft 408 is located below the shaft wall inside the assembly seat 403 and is abutted against a rigid spring 410. The end of the driving shaft 408 away from the assembly seat 403 is fixedly installed with a connecting rod 407, and the end of the connecting rod 407 away from the driving shaft 408 is fixedly connected to the control shaft 409. A positioning top block 411 corresponding to the control shaft 409 is fixedly installed on the side wall of the assembly slot 413, and a limiting base 412 fixed on the side wall of the assembly slot 413 is provided below the positioning top block 411.

[0033] By adopting the above technical solution, when using a CNC machine tool to replace a tool, it is necessary to replace the tool through the mutual cooperation of the X-axial drive member 201, the Y-axial drive member 202 and the Z-axial drive member 203. The X-axial drive member 201 is composed of an X-axial slide frame, a first speed-regulating motor, a first ball screw and a first guide rod. The Y-axial drive member 202 is composed of a Y-axial slide frame, a second speed-regulating motor, a second ball screw and a second guide rod. The Z-axial drive member 203 is composed of a Z-axial slide frame, a third speed-regulating motor, a third ball screw and a third guide rod. When the tool needs to be replaced, the first speed-regulating motor is started, and the first speed-regulating motor drives the first ball screw to move the Y-axial slide frame in the X-axial direction. The tool is arranged on the Y-axis When the cam 206 is moved to the top of the maintenance sponge cylinder 402, the tool clamped on the cam 206 is inserted into the maintenance sponge cylinder 402. By continuously inserting the tool, the bottom assembly seat 403 can be pushed to move, and the assembly seat 403 slides downward inside the assembly slot 413. The seat 403 slides downward to compress the rigid spring 410, and at the same time drives the driving shaft 408, the connecting rod 407 and the control shaft 409 to move downward. When the control shaft 409 moves downward, it can slide between the positioning top block 411 and the limit base 412 under the action of the positioning top block 411. The control shaft 409 between the sliding positioning top block 411 and the limit base 412 can be locked by the positioning top block 411, so that the assembly seat 403 can be fixed in the appropriate position of the assembly slide groove 413. At this time, the clamping rod 405 can be pressed against the assembly slide groove 413 to rotate the clamping rod 405, and the rotation of the symmetrical clamping rod 405 can enable the clamping block 406 to clamp and fix the tool inserted in the maintenance sponge tube 402, cooperating with the movement of the CNC machining axis 206. The kinetic energy causes the tool stuck in the CNC machining axis 206 to be pulled out. When replacing other tools, the CNC machining axis 206 is moved to the top of the corresponding tool. The CNC machining axis 206 moves down to engage with the tool. When the CNC machining axis 206 continues to move down, it presses the assembly seat 403. When the assembly seat 403 moves down, it should be emphasized that at this time, the rigid spring 410 and the vertical center line of the abutting cylindrical drive shaft 408 are not on the same vertical center line. The assembly seat 403 moves down a short distance, which will drive the control shaft 409 stuck in the groove on the lower end surface of the positioning top block 411 to rotate and disengage. At this time, the CNC machining axis 206 moves up, and the rigid spring 410 will push the assembly seat 403 to move up, so that the assembly slide 413 will no longer press the clamping rod 405 tightly.The clamping rod 405 will release the clamped tool, thereby completing the automatic tool change. The automatic tool change can complete the tool change in a short time, thereby reducing the downtime of the machine tool and improving production efficiency. Through automatic tool change, the machine tool can continuously process without human intervention, thus achieving continuous and efficient production. The automatic tool change can accurately position and change the tool, reducing the error caused by human operation, thereby improving processing accuracy. The automatic tool change reduces the need for human intervention and reduces the dependence on operators, thereby saving labor costs.

[0034] Working principle: When using a CNC machine tool to replace a tool, the position of the support seat 204 can be adjusted through the mutual cooperation of the X-axis drive member 201, the Y-axis drive member 202 and the Z-axis drive member 203, thereby driving the servo motor 205 and the CNC machining axis 206 to move. When the CNC machining axis 206 moves to the top of the corresponding maintenance sponge cylinder 402, the tool clamped on the CNC machining axis 206 is inserted into the maintenance sponge cylinder 402. By continuously inserting, the assembly seat 403 at the bottom can be pushed to move, and the assembly seat 403 slides downward inside the assembly slide groove 413. The downward sliding of the assembly seat 403 can compress the rigid spring 410, and at the same time drive the drive shaft 408, the connecting rod 407 and the control When the control shaft 409 moves downward, the control shaft 409 can slide between the positioning top block 411 and the limiting base 412 under the action of the positioning top block 411. The control shaft 409 between the sliding positioning top block 411 and the limiting base 412 can be locked by the positioning top block 411, so that the assembly seat 403 can be fixed in the appropriate position of the assembly slide 413. At this time, the clamping rod 405 can be pressed against the assembly slide 413 to rotate the clamping rod 405, and the rotation of the symmetrical clamping rod 405 can enable the clamping block 406 to clamp and fix the tool inserted into the maintenance sponge tube 402, and the movement of the CNC machining axis 206 can make the tool stuck in the CNC machining axis 206 be pulled out. When replacing other tools, The CNC machining axis 206 is moved to the top of the corresponding tool. The CNC machining axis 206 moves down to engage with the tool. When the CNC machining axis 206 continues to move down, the assembly seat 403 is pressed. When the assembly seat 403 moves down, it should be emphasized that at this time the rigid spring 410 and the vertical center line of the abutting cylindrical drive shaft 408 are not on the same vertical center line. The assembly seat 403 moves down a short distance, which will drive the control shaft 409 stuck in the groove on the lower end surface of the positioning top block 411 to rotate and disengage. At this time, the CNC machining axis 206 moves up, and the rigid spring 410 will push the assembly seat 403 to move up, so that the assembly slide 413 will no longer be pressed against the clamping rod 405, and the clamping rod 405 will release the clamped tool, thereby completing the work. Automatic replacement of paired tools. When the tool is placed and replaced, the compression assembly seat 403 can be squeezed. The assembly seat 403 can squeeze the compression rod 304 by sliding downward in the assembly slide 413. The compression rod 304 is fixedly connected to the bottom end of the assembly seat 403, thereby realizing the driving of the compression rod 304. Through the downward compression of the compression rod 304, the anti-rust oil at the bottom end of the cylinder body 303 can be squeezed through the plug body 307, so that the anti-rust oil flows into the upper end of the cylinder body 303 through the one-way valve hole 308. At the same time, the increase of the oil at the upper end of the interior can make the oil injected into the injection pipe 305, and the injection pipe 305 can spray the oil onto the corresponding maintenance sponge tube 402, thereby realizing the maintenance of the tool.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A CNC machine tool with automatic tool change, comprising a CNC machine tool housing (1), characterized in that: A machining adjustment component (2) is provided inside the CNC machine tool housing (1); a tool maintenance component (3) is provided at the lower left end inside the CNC machine tool housing (1); the tool maintenance component (3) comprises a tool bearing base (301) fixed at the lower left end inside the CNC machine tool housing (1); a tool changing component (4) is provided inside and above the tool bearing base (301); the tool changing component (4) comprises a tool holder (401) fixedly mounted on the upper end surface of the tool bearing base (301); three maintenance sponge cylinders (402) are movably installed inside the tool holder (401); and injection pipes (305) corresponding to the maintenance sponge cylinders (402) are penetrated inside and on the upper end surface of the tool bearing base (301).

2. The CNC machine tool with automatic tool change according to claim 1, characterized in that: The machining adjustment assembly (2) comprises an X-axial drive member (201) mounted on the bottom end surface of the inner portion of the CNC machine tool housing (1); a Y-axial drive member (202) is connected above the X-axial drive member (201); and a Z-axial drive member (203) is connected inside the Y-axial drive member (202).

3. The CNC machine tool with automatic tool change according to claim 2, characterized in that: A bearing seat (204) is fixedly mounted on the power output end of the Z-axis driving member (203), a servo motor (205) is fixedly mounted on the upper end surface of the bearing seat (204), and a CNC machining shaft (206) is fixedly connected to the power output end of the servo motor (205) through the bearing seat (204).

4. The CNC machine tool with automatic tool change according to claim 1, characterized in that: The tool maintenance assembly (3) further comprises an anti-rust oil groove (302) provided on the upper end surface of the tool bearing base (301); a cylinder body (303) is fixedly mounted inside the tool bearing base (301); and a one-way oil inlet valve pipe (306) is connected between the cylinder body (303) and the anti-rust oil groove (302).

5. The CNC machine tool with automatic tool change according to claim 4, characterized in that: A plug body (307) is slidably fitted inside the cylinder body (303), a one-way valve hole (308) is provided inside the plug body (307), a compression rod (304) is fixedly connected to the upper end surface of the plug body (307), and the interior of the cylinder body (303) and the injection pipe (305) are communicated with each other.

6. The CNC machine tool with automatic tool change according to claim 1, characterized in that: The bottom end surface of the maintenance sponge cylinder (402) is fixedly mounted with an assembly seat (403); an oil groove (404) is provided at the connection between the upper end surface of the assembly seat (403) and the maintenance sponge cylinder (402); an assembly slide groove (413) is provided at the corresponding position between the tool bearing base (301) and the assembly seat (403); and the assembly slide groove (413) is slidably connected to the assembly seat (403).

7. The CNC machine tool with automatic tool change according to claim 6, characterized in that: The left and right sides of the assembly seat (403) are both rotatably mounted with clamping rods (405), the top of the clamping rods (405) is fixedly mounted with a clamping block (406), the interior of the assembly seat (403) is rotatably mounted with a driving shaft (408), and the driving shaft (408) is located below the shaft wall inside the assembly seat (403) and is in contact with a rigid spring (410).

8. The CNC machine tool with automatic tool change according to claim 7, characterized in that: A connecting rod (407) is fixedly installed on one end of the driving shaft (408) away from the assembly seat (403), and a control shaft (409) is fixedly connected to one end of the connecting rod (407) away from the driving shaft (408). A positioning top block (411) corresponding to the control shaft (409) is fixedly installed on the side wall of the assembly slide (413), and a limiting base (412) fixed on the side wall of the assembly slide (413) is provided below the positioning top block (411).

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