A tool holder for a numerical control machine tool

Abstract

The present application relates to machine tool equipment technical field, specifically, a kind of tool rest for numerical control machine tool, comprising: positioning tool changing part, the positioning tool changing part is arranged on machine tool apron, always positioning single tool and cutting, and the positioning tool changing part can automatically complete the switching of tool, clean tool part, the clean tool part is arranged on the positioning tool changing part and the machine tool apron, the clean tool part can rely on the positioning tool changing part and the surface of tool under change is cleaned to remove dirt, so that tool is immediately accepted comprehensive maintenance after cutting, effectively avoid the influence of continuous cutting force on the positioning state of tool, ensure that every tool is fastened when cutting, guarantee machining accuracy, eliminate security risks, and positioning tool changing part will other temporarily unused tools be all protected, other temporarily unused tools will not be exposed in cutting environment, thereby effectively insulate the attachment of chip, cutting fluid etc. produced in machining process.

Description

Technical Field

[0001] This invention relates to the field of machine tool equipment technology, and more specifically, to a tool holder for a CNC machine tool. Background Technology

[0002] The tool post is a very important component on a CNC machine tool, serving multiple functions including tool mounting, positioning, and tool changing. Generally, a corresponding number of tools are mounted on the tool post according to the functions of the CNC lathe and the machining requirements. A commonly used type is the four-way tool post, which can simultaneously mount four tools with different functions. The tool post is rotated by a motor driving a lead screw and worm gear, thereby rotating the next tool to be used to the predetermined machining position, thus realizing tool changing.

[0003] However, the tool holder not only needs to hold the cutting tools, but also directly participates in the cutting process and bears extremely large cutting forces. Under the continuous cutting force, the positioning of other tools on the tool holder can easily be affected, causing the tools to loosen, affecting machining accuracy, and posing a huge safety hazard. In addition, the tools are positioned on the tool holder in an overhanging state. During cutting, the distance from the cutting force end of the tool to the fixed end of the tool holder is relatively long, which easily generates vibration. This reduces the rigidity of the tool and limits the overall machining performance of the machine tool. Moreover, even unused tools on the tool holder will always be near the machining point along with the tool holder. Therefore, a large amount of chips and cutting fluid generated during the machining process will splash and adhere to the tools, which may affect machining accuracy and bring a burden of later maintenance. Summary of the Invention

[0004] The purpose of this invention is to provide a tool holder for CNC machine tools to solve the above-mentioned problems.

[0005] To achieve the above objectives, the present invention provides a tool post for a CNC machine tool, comprising: The positioning tool changing unit is mounted on the machine tool slide. The positioning tool changing unit will install and position the tool separately and store the spare tool separately. It will always position a single tool for cutting and can automatically switch tools. The tool cleaning section is provided on the positioning tool changing section and the machine tool slide. The tool cleaning section can repeatedly clean the surface of the replaced tool by relying on the positioning tool changing section, so that the tool can receive comprehensive maintenance immediately after cutting. When the positioning and tool changing unit positions the tool, the positioning range can be expanded toward the cutting force end of the tool to effectively increase the fixed force area on the tool.

[0006] Furthermore, the positioning and tool changing unit includes: The turret is mounted on the edge of the machine tool slide and has a right-angle notch so that the two perpendicular faces of the tool can fit tightly against the turret. Upper pressure cap, one side of which is vertically slidably mounted on the turret; An outer protective box is disposed on the machine tool slide and close to the side of the turret; A driver, the driver being disposed within the outer casing; A force transmission component is installed on the other side of the upper pressure cover and connected to the output end of the driver; A side extrusion strip is slidably disposed on the turret. An extrusion plate is installed at the bottom of the upper pressure cap and is in contact with the side of the side extrusion strip. The thickness of the extrusion plate increases from the part above the part in contact with the side extrusion strip. A recessed groove is opened on the turret at the position below the extrusion plate. A spring is mounted on the turret and connected to both ends of the side extrusion bar, and the spring and the extrusion plate are on the same side; A linear module is mounted on the machine tool slide, and the turret is located on the movement path of the linear module. A base pier is mounted on the linear module, and a motor is installed inside the base pier. A top seat is rotatably mounted on top of the base pier, and the output shaft of a motor inside the base pier is connected to the top seat in the upward direction; An elbow, which is linearly and movably mounted on the top seat; An electric actuator is mounted on the side of the top seat, and its output shaft is connected to the elbow. A gripper head is mounted on the bend head. The gripper head is groove-shaped, and an electromagnetic chuck is installed on the inner bottom surface of the gripper head. The gripper head is aligned with the corner of the turret notch. A support platform is disposed on the machine tool slide and located on the side of the linear module; A storage chamber is provided on the support platform.

[0007] Furthermore, the positioning and tool changing unit also includes: An arm body that is movably inserted from the front side of the upper pressure cover; A clamping frame claw is installed at the end of the arm body, and the clamping frame claw is flush with the upper pressure cap; A hand-tightening bolt is screwed onto the upper pressure cap and its end is rotatably mounted on the arm.

[0008] Furthermore, the cleaning blade section includes: A frame air chamber is installed on the edge of the front side of the gripper head; A continuous air nozzle, wherein the continuous air nozzle is connected to each side of the air cavity of the frame, and a plurality of the continuous air nozzles are inwardly folded; The first spring tube has one end connected to the air chamber of the frame from the back and the other end connected to the high-pressure air source on the CNC machine tool.

[0009] Furthermore, the cleaning blade section also includes: A single-chamber assembly is mounted on the support platform and aligned with the backup chamber. A plurality of the petal-shaped sponge strips are disposed in the single-strip chamber, and the plurality of the petal-shaped sponge strips are spliced ​​together to maintain a fluffy appearance; A cleaning agent container is disposed on the machine tool slide; An outer protective tube is inserted into the cleaning agent container. After being fixed to the storage chamber, the outer protective tube is inserted into the single-strip chamber. A water-absorbing cotton strip is wrapped inside the outer protective tube, and the water-absorbing cotton strip is in contact with the flap-shaped sponge strip.

[0010] Furthermore, the cleaning blade section also includes: An inner-bladder airbag is installed on the inner wall at the tail of the single-slot chamber, and the inner-bladder airbag is in contact with at least three of the flap-shaped sponge strips. The second spring tube has one end passing through the single chamber and connecting to the inner bladder airbag, and the other end connecting to the high-pressure air source on the CNC machine tool.

[0011] Furthermore, the bottom surface of the upper pressure cap and the side surface of the side extrusion strip are both engraved with a grid pattern.

[0012] Furthermore, the force transmission component has at least three protruding parts that contact the upper pressure cap.

[0013] Furthermore, a drain pipe is installed at the tail end of the single chamber at an angle downwards; The inner bottom surface of the single chamber is a sloping surface with a lower tail end.

[0014] Furthermore, partitions are evenly spaced within the storage chamber; The partition divides the internal space of the storage chamber into multiple sections.

[0015] Compared with the prior art, the present invention has the following beneficial effects: This invention utilizes a positioning tool changer to automatically complete the installation and changing of tools. While ensuring smooth execution of the cutting task, the positioning tool changer only maintains the positioning of the tool to be used in the next cut, while storing other tools that are not currently in use separately. This separates the tools, rather than fixing all the necessary tools at once, effectively preventing the continuous cutting force from affecting the tool's positioning. It ensures that each tool is securely fixed during cutting, guaranteeing machining accuracy, eliminating safety hazards, and protecting all temporarily unused tools from exposure. In the exposed cutting environment, it effectively isolates the adhesion of chips, cutting fluid, and other contaminants generated during machining. In addition, the positioning tool changer can bring the positioning force as close as possible to the cutting end of the tool, so that the tool has a larger fixed area and the length from the cutting end to the fixed end is shortened as much as possible. This effectively reduces the overhang of the tool, thereby effectively suppressing tool vibration, indirectly enhancing its rigidity, and improving the overall machining performance of the machine tool. Through the cleaning section and the positioning tool changer, after each tool is replaced, the surface of the tool can be thoroughly cleaned in stages, ensuring that the tool is cleaned thoroughly and evenly, without the need for additional tool maintenance. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 A perspective view of the present invention is shown; Figure 2 A second perspective view of the present invention is shown; Figure 3 A third perspective view of the present invention is shown; Figure 4 A fourth perspective view of the present invention is shown; Figure 5 A fifth perspective view of the present invention is shown; Figure 6 The present invention is shown. Figure 1 Enlarged view of point A; Figure 7 The present invention is shown. Figure 2 Enlarged view of point B; Figure 8 The present invention is shown. Figure 3 Enlarged view of point C; Figure 9 The present invention is shown. Figure 4 Enlarged view of point D; Figure 10 The present invention is shown. Figure 5 Enlarged view of point E.

[0018] In the figure, the same reference numerals represent the same structural element, wherein: 1. Positioning and tool changing unit; 11. Turret; 12. Upper pressure cover; 13. Outer protective box; 14. Driver; 15. Force transmission component; 16. Side extrusion bar; 17. Extrusion plate; 18. Spring; 19. Linear module; 191. Bottom block; 192. Top seat; 193. Elbow; 1931. Electric push rod; 194. Grip head; 195. Support platform; 196. Storage chamber; 197. Arm body; 198. Pressure frame claw; 199. Hand-tightening bolt; 2. Machine tool slide; 3. Tool cleaning unit; 31. Enclosure air chamber; 32. Extended air nozzle; 33. First spring tube; 34. Single-strip chamber; 35. Pebble-type sponge strip; 36. Detergent tank; 37. Outer protective tube; 38. Inner liner type airbag; 39. Second spring tube; 4. Drain pipe; 5. Partition. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0020] like Figure 1-10 As shown, a tool post for a CNC machine tool includes: The positioning tool changer 1 is set on the machine tool slide 2. The positioning tool changer 1 will install and position the tool separately and store the spare tool separately. It will always position a single tool for cutting and can automatically switch tools. The machine tool slide 2 is an important existing moving part on the CNC machine tool. It is responsible for supporting the tool holder and the tool and realizing precise linear motion to ensure stability and accuracy in the machining process. The tool cleaning section 3 is installed on the positioning tool changing section 1 and the machine tool slide 2. The tool cleaning section 3 can rely on the positioning tool changing section 1 to clean the surface of the replaced tool multiple times, so that the tool can receive comprehensive maintenance immediately after cutting. When the positioning tool changer 1 positions the tool, the positioning range can be expanded towards the cutting force-bearing end of the tool to effectively increase the fixed force area on the tool. This invention, through the positioning tool changer 1, can automatically complete the actions of installing and positioning the tool and changing the tool. While ensuring smooth execution of the cutting task, the positioning tool changer 1 always maintains the positioning of only the tool to be used in the next cut, while storing other temporarily unused tools separately. This separates the tools, rather than fixing all the necessary tools at once, effectively avoiding the impact of continuous cutting force on the tool's positioning state. This ensures that each tool is securely fixed during cutting, guarantees machining accuracy, eliminates safety hazards, and further, the positioning tool changer 1 stores other temporarily unused tools separately. All unused tools are protected, preventing other temporarily unused tools from being exposed to the cutting environment. This effectively isolates them from the adhesion of chips, cutting fluid, and other contaminants generated during machining. Furthermore, the positioning tool changer 1 can position the positioning force as close as possible to the cutting end of the tool, increasing the area of ​​the tool that is fixed and minimizing the length from the cutting end to the fixed end. This effectively reduces the overhang of the tool, thereby suppressing tool vibration, indirectly enhancing its rigidity, and improving the overall machining performance of the machine tool. Through the cleaning section 3 and the positioning tool changer 1, each tool can be thoroughly and evenly cleaned after being replaced, ensuring that the tool is cleaned completely without the need for additional tool maintenance.

[0021] Optionally, the positioning tool changer 1 includes: Turret 11 is installed on the edge of the machine tool slide 2. Turret 11 has a right-angle notch, and the two perpendicular surfaces of the tool can fit tightly against turret 11. Upper pressure cap 12 is vertically slidably mounted on the turret 11 on one side; The outer protective box 13 is mounted on the machine tool slide 2 and is close to the side of the turret 11; The actuator 14 is located inside the outer protective box 13. The actuator 14 can be a small hydraulic cylinder or the like, as long as it has enough force to pull down the upper pressure cover 12. Force transmission component 15 is installed on the other side of the upper pressure cover 12 and connected to the output end of the driver 14. Side extrusion strip 16, which is slidably disposed on turret 11; The extrusion plate 17 is installed at the bottom of the upper pressure cover 12 and is in contact with the side of the side extrusion strip 16. The thickness of the extrusion plate 17 increases from the part above the part in contact with the side extrusion strip 16. A recessed groove is opened on the turret 11 at the position below the extrusion plate 17. Spring 18 is mounted on the turret 11 and connected to both ends of the side extrusion bar 16, and spring 18 is on the same side as the extrusion plate 17. Linear module 19 is mounted on the machine tool slide 2. The turret 11 is located on the movement path of the linear module 19. The linear module 19 can be a linear motor, a slide rail slider mechanism, etc., as long as it can perform linear reciprocating motion. The base pier 191 is set on the linear module 19, and a motor is installed inside the base pier 191. Top seat 192 is rotatably mounted on top of bottom block 191, and the output shaft of the motor inside bottom block 191 is connected to top seat 192 in the upward direction; Elbow 193 is linearly and movably mounted on top seat 192; Electric actuator 1931 is mounted on the side of top seat 192, and its output shaft is connected to elbow 193. The grab head 194 is mounted on the elbow 193. The grab head 194 is groove-shaped and has an electromagnetic chuck installed on its inner bottom surface. The grab head 194 is aligned with the corner of the notch at the turret 11. The support platform 195 is mounted on the machine tool slide 2 and located on the side of the linear module 19. The backup chamber 196 is located on the support platform 195. At the start of machining, all cutting tools are placed in the backup chamber 196 with the cutting edges facing inwards and the tool handles facing outwards. First, the straight module 19 moves the elbow 193 and the gripper 194 to the position corresponding to the first required cutting tool. Then, the motor in the base 191 is activated, rotating the top seat 192 and twisting the gripper 194 until it aligns with the tool handle. Next, the electric push rod 1931 is activated to push the elbow 193 and gripper 194 towards the tool handle until the gripper 194 catches the tool handle. Then, the electromagnetic chuck inside the gripper 194 is activated to firmly hold the tool. Finally, the electric push rod 1931 is activated again, carrying... The cutting tool is retracted and slowly removed from the storage chamber 196. After the tool is completely removed, the motor in the base 191 is started to rotate the tool so that its cutting edge faces the turret 11. The tool is then transported by the linear module 19 and placed against the corner of the notch in the turret 11. The driver 14 is then started, and the upper pressure plate 12 is pulled down along the turret 11 through the force transmission component 15 until the upper pressure plate 12 firmly presses down on the tool. As the upper pressure plate 12 moves down, the extrusion plate 17 also moves down synchronously. As the extrusion plate 17 moves, its inclined surface presses against the side extrusion strip 16, causing the side extrusion strip 16 to move. When the upper pressure plate 12 presses down on the tool, the side extrusion strip 16 also squeezes the tool tightly from the side, ensuring that the tool is firmly pressed down. The tool is fixed in place to ensure smooth cutting. Under normal conditions, spring 18 is in its original state. As the side extrusion retaining bar 16 tightens the tool, spring 18 is gradually pulled open. When the upper pressure cover 12 moves upward and begins to reset, as the extrusion plate 17 moves away, the side extrusion retaining bar 16 loses its restriction and is pulled back to its original position by the spring 18. When the next tool is needed, the driver 14 pushes the upper pressure cover 12 upward to release the tool fixation. Then, the gripper 194 re-encloses the tool handle and removes the tool from the turret 11, sending it back to the storage chamber 196. The required tool is then retrieved from the storage chamber 196 and re-fixed onto the turret 11. This process automatically completes the installation, positioning, and tool changing of tools. To ensure the smooth execution of cutting tasks, only one tool is always kept in position. Other tools not currently in use are temporarily placed in the storage chamber 196, thus separating the tools instead of fixing all the necessary tools at once. This effectively avoids the continuous cutting force affecting the tool positioning, ensuring that each tool is just secured and firmly fixed during cutting, guaranteeing machining accuracy, eliminating safety hazards, and protecting other tools not currently in use from the cutting environment within the storage chamber 196. This effectively isolates the tools from the adhesion of chips, cutting fluid, etc. generated during machining, ensuring that each tool is clean before use and guaranteeing machining accuracy.

[0022] Optionally, the positioning tool changer 1 also includes: Arm 197 is inserted movably from the front side of the upper pressure cover 12; The clamping claw 198 is installed at the end of the arm body 197 and is flush with the upper pressure cover 12. Hand-tightening bolt 199 is screwed onto the upper pressure cap 12, and its end is rotatably mounted on the arm body 197. When the upper pressure cap 12 presses down on the tool, the clamping claw 198 also tightly fits onto the tool. This extends and expands the fixing range of the tool based on the upper pressure cap 12, allowing the positioning force to be as close as possible to the cutting end of the tool, increasing the area of ​​the tool that is fixed, and minimizing the length from the cutting end to the fixed end. This effectively reduces the overhang of the tool, thereby effectively suppressing tool vibration and indirectly enhancing its rigidity. Improve the overall machining performance of the machine tool; by turning the hand-tightening bolt 199, the part of the arm body 197 inside the upper pressure cover 12 can be pulled out or more of it can be pushed into the upper pressure cover 12, thereby adjusting the position of the clamping frame claw 198. According to the actual cutting conditions and the length of the tool, the clamping frame claw 198 can be flexibly adjusted to fix the tool at the optimal reinforcement point, so as to further ensure the effect of shortening the length from the cutting force end to the fixed end of the tool, while improving the fault tolerance rate, so as to prevent the clamping frame claw 198 from colliding with the workpiece under certain cutting conditions and affecting the machining.

[0023] Optionally, the cleaning section 3 includes: The frame air chamber 31 is installed on the edge of the front side of the grab head 194; Extended air nozzles 32 are connected to each side of the surrounding air chamber 31, and several extended air nozzles 32 are inwardly folded. The first spring tube 33 has one end connected to the frame air chamber 31 from the back and the other end connected to the high-pressure air source on the CNC machine tool. When changing tools, the tool currently in use is removed from the tool turret 11, and the high-pressure air source on the CNC machine tool is activated. The high-pressure gas instantly passes through the first spring tube 33 and enters the frame air chamber 31, and finally bursts out from the extended air nozzles 32. The four oblique extended air nozzles 32 guide the high-pressure airflow to the four sides of the tool, so that each side of the tool is subjected to the action of the high-pressure airflow, thereby blowing away as much of the large-volume chips and cutting fluid attached to the tool as possible, completing the first cleaning process of the tool, and removing the dirtiest contaminants on the tool.

[0024] Optionally, the cleaning section 3 also includes: A single chamber 34 is installed on the support platform 195 and aligned with the storage chamber 196. A number of petal-shaped sponge strips 35 are arranged in a single-strip chamber 34, and the petal-shaped sponge strips 35 are spliced ​​together to maintain a fluffy appearance. Cleaning agent tank 36 is installed on the machine tool slide 2, and the cleaning agent tank 36 is filled with a suitable cleaning agent for cleaning cutting tools; The outer protective tube 37 is inserted into the cleaning agent tank 36. After being fixed to the storage chamber 196, the outer protective tube 37 is inserted into the single-strip chamber 34. A water-absorbing cotton strip is wrapped inside the outer protective tube 37, which contacts several sponge strips 35. Under the continuous water absorption of the cotton strip inside the outer protective tube 37, the sponge strips 35 become wet. After the chips and cutting fluid on the tool are pneumatically cleaned using high-pressure airflow, the tool is inserted into the single-strip chamber 34 via the motor and electric push rod 1931 in the linear module 19 and the bottom block 191. During the tool's entry, the sponge strips 35 are pushed apart for the third time. The sponge strip 35 also wraps around the tool, making full contact with it. After the tool is fully inserted, the tool is pulled back and forth by the electric push rod 1931. The friction between the sponge strips 35 and the tool, as well as the cleaning action of the cleaning agent, clean the tool again, achieving a fine cleaning and ensuring that contaminants on the tool surface are completely removed. Then the tool is put back into the storage chamber 196. After each tool is replaced, its surface is immediately subjected to deep cleaning to ensure that the tool is clean before storage. No additional tool maintenance is required, which reduces the burden on the machining personnel and greatly improves the functional integration of the tool holder.

[0025] Optionally, the cleaning section 3 also includes: An inner-bladder airbag 38 is installed on the inner wall at the tail of a single-slot chamber 34, and the inner-bladder airbag 38 is in contact with at least three flap-shaped sponge strips 35. The second spring tube 39 has one end passing through the single-strip chamber 34 and connecting to the inner-bladder airbag 38, and the other end connecting to the high-pressure air source on the CNC machine tool. After the cutting tool is fully inserted into the single-strip chamber 34, its cutting edge is located at the inner-bladder airbag 38. The cutting edge has a large and small shape variation. When cleaning the cutting tool, the high-pressure air source on the CNC machine tool is turned on to inflate the inner-bladder airbag 38, causing it to expand and bulge, thereby pressing the petal-shaped sponge strip 35 inward, causing it to deform. The petal-shaped sponge strip 35 will then adhere to the cutting edge of the cutting tool and come into contact with it, thereby ensuring that the cutting edge with a large and small shape variation can be cleaned in a focused manner, preventing the cutting edge from being missed, ensuring thorough cleaning, and avoiding the presence of contaminants on the cutting edge.

[0026] Optionally, the bottom surface of the upper pressure cap 12 and the side surface of the side extrusion strip 16 are engraved with a grid pattern to increase the friction with the contact surface of the tool, thereby improving the fixing effect of the tool and fixing the tool more securely.

[0027] Optionally, the force transmission component 15 has at least three protruding parts that contact the upper pressure cap 12 to ensure that the upper pressure cap 12 is subjected to uniform force and acts on the tool, further ensuring that the tool is stably fixed.

[0028] Optionally, a drain pipe 4 is installed at the tail end of the single-strip chamber 34 at an angle downwards to discharge the cleaning agent flowing down from the sponge strips 35 when they are squeezed by the knife and the inner bladder airbag 38, so as to prevent it from accumulating in the single-strip chamber 34. The inner bottom surface of the single chamber 34 is a sloping surface with a lower tail end, which allows the cleaning agent to flow smoothly to the drain pipe 4 and be discharged, further preventing the cleaning agent from accumulating.

[0029] Optionally, partitions 5 are provided at equal intervals within the storage chamber 196; The partition 5 divides the internal space of the storage chamber 196 into multiple sections. Under the action of the partition 5, there is a gap between the handles of each knife, so that they are not all touching. This makes it easier for the gripper 194 to grab the handle of the knife and remove it for knife replacement, thus preventing the gripper 194 from causing structural damage or requiring manual intervention.

[0030] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A tool post for a CNC machine tool, characterized in that, include: The positioning tool changing unit (1) is set on the machine tool slide (2). The positioning tool changing unit (1) will install and position the tool separately and store the spare tool separately. It will always position a single tool and perform cutting. The positioning tool changing unit (1) can automatically complete the tool switching. The tool cleaning section (3) is provided on the positioning tool changing section (1) and the machine tool slide (2). The tool cleaning section (3) can rely on the positioning tool changing section (1) to clean the surface of the replaced tool multiple times so that the tool can be fully maintained immediately after cutting. When the positioning and tool changing unit (1) positions the tool, the positioning range can be expanded toward the cutting force end of the tool to effectively increase the fixed force area on the tool.

2. The tool post for a CNC machine tool as described in claim 1, characterized in that, The positioning and tool changing unit (1) includes: The turret (11) is installed at the edge of the machine tool slide (2). The turret (11) has a right-angle notch, and the two perpendicular surfaces of the tool can be closely pressed against the turret (11). Upper pressure cap (12), one side of which is vertically slidably mounted on the turret (11); The outer protective box (13) is disposed on the machine tool slide (2) and close to the side of the turret (11); A driver (14) is disposed within the outer casing (13); Force transmission component (15), which is installed on the other side of the upper pressure cover (12) and connected to the output end of the driver (14); Side extrusion strip (16), the side extrusion strip (16) is slidably disposed on the turret (11); The extrusion plate (17) is installed at the bottom of the upper pressure cap (12) and is in contact with the side of the side extrusion strip (16). The thickness of the extrusion plate (17) increases from the part above the part in contact with the side extrusion strip (16). A recessed groove is opened on the turret (11) at the position below the extrusion plate (17). A spring (18) is mounted on the turret (11) and connected to both ends of the side extrusion bar (16), and the spring (18) is on the same side as the extrusion plate (17); Linear module (19), the linear module (19) is mounted on the machine tool slide (2), and the turret (11) is located on the movement path of the linear module (19); A base (191) is provided on the linear module (19), and a motor is provided inside the base (191); Top seat (192), which is rotatably mounted on the top of the base (191), and the output shaft of the motor in the base (191) is connected to the top seat (192) in the upper direction; Elbow (193), which is linearly and movably mounted on top seat (192); An electric actuator (1931) is mounted on the side of the top seat (192), and its output shaft is connected to the elbow (193). The gripper (194) is mounted on the elbow (193). The gripper (194) is groove-shaped. An electromagnetic chuck is mounted on the inner bottom surface of the gripper (194). The gripper (194) is aligned with the corner of the notch of the turret (11). A support platform (195) is provided on the machine tool slide (2) and located on the side of the linear module (19); A storage chamber (196) is provided on the support platform (195).

3. A tool post for a CNC machine tool as described in claim 2, characterized in that, The positioning and tool changing unit (1) also includes: Arm body (197), which is movably inserted from the front side of the upper pressure cover (12); A clamping claw (198) is installed at the end of the arm body (197) and is flush with the upper pressure cap (12); A hand-tightening bolt (199) is screwed onto the upper pressure cap (12) and its end is rotatably mounted on the arm body (197).

4. A tool post for a CNC machine tool as described in claim 3, characterized in that, The cleaning blade section (3) includes: A frame air chamber (31) is installed on the edge of the front side of the gripper (194); A continuous air nozzle (32) is connected to each side of the surrounding air cavity (31), and several of the continuous air nozzles (32) are inwardly folded; The first spring tube (33) has one end connected to the frame air chamber (31) from the back and the other end connected to the high-pressure air source on the CNC machine tool.

5. A tool post for a CNC machine tool as described in claim 4, characterized in that, The cleaning blade section (3) also includes: A single-strip chamber (34) is mounted on the support platform (195) and aligned with the storage chamber (196); A plurality of the petal-shaped sponge strips (35) are disposed in the single-strip chamber (34), and the plurality of the petal-shaped sponge strips (35) are spliced ​​together to maintain a fluffy appearance; A cleaning agent container (36) is disposed on the machine tool slide (2); The outer protective tube (37) is inserted into the cleaning agent container (36). The outer protective tube (37) is fixed on the storage chamber (196) and then inserted into the single-strip chamber (34). The outer protective tube (37) is wrapped with a water-absorbing cotton strip, which is in contact with the flap-shaped sponge strip (35).

6. A tool post for a CNC machine tool as described in claim 5, characterized in that, The cleaning blade section (3) also includes: An inner-bladder airbag (38) is installed on the inner wall at the tail of the single-strip chamber (34), and the inner-bladder airbag (38) is in contact with at least three of the flap-shaped sponge strips (35). The second spring tube (39) has one end passing through the single chamber (34) and connected to the inner bladder airbag (38), and the other end connected to the high-pressure air source on the CNC machine tool.

7. A tool post for a CNC machine tool as described in claim 6, characterized in that, The bottom surface of the upper pressure cap (12) and the side surface of the side extrusion strip (16) are both engraved with a grid pattern.

8. A tool post for a CNC machine tool as described in claim 7, characterized in that, The force transmission component (15) has at least three protruding parts that contact the upper pressure cap (12).

9. A tool post for a CNC machine tool as described in claim 8, characterized in that, The tail end of the single chamber (34) is obliquely downward installed with a drain pipe (4). The inner bottom surface of the single chamber (34) is a sloping surface with a lower tail end.

10. A tool post for a CNC machine tool as described in claim 9, characterized in that, The storage chamber (196) is provided with partitions (5) at equal intervals; The partition (5) divides the internal space of the storage chamber (196) into multiple sections.

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