A modular multi-attitude tool shank cleaning device and method for spindle nose

Abstract

The application discloses a spindle end face modular multi-pose tool holder cleaning device and method, and belongs to the technical field of machine tool accessories. The device comprises a ring spray box, a ring spray cover, a plurality of straight spray straight pipe nozzles and a gas path connecting assembly. The ring spray box is detachably fixed to the front end face of the spindle flange through a connecting piece, and forms a closed ring-shaped air cavity together with the ring spray cover. A plurality of installation positions are uniformly arranged on the ring spray cover, and each installation position is provided with a straight spray straight pipe nozzle. The nozzle supports multi-angle adjustment of the spraying direction. The gas path connecting assembly comprises an air inlet hole, a polyurethane hose and an electromagnetic valve. The electromagnetic valve is provided with an interface connected to the air source of the machine tool and an electrical control interface connected to the numerical control system of the machine tool. The method responds to the tool changing stage signal sent by the numerical control system, executes the corresponding working mode, and outputs the controllable air flow to clean the tool holder. The application solves the problems of insufficient coverage and unstable effect of the traditional cleaning, and the device can be reused across the same type of equipment, thereby improving the machining precision and the economic efficiency of the equipment.

Description

Technical Field

[0001] This invention belongs to the field of machine tool accessories technology, specifically relating to a modular multi-position tool holder cleaning device and method for spindle end face. Background Technology

[0002] In existing technologies, chip removal from the spindle end face and tool holder of CNC machine tools typically relies on methods such as air blowing from the center of the taper hole and external cooling air blowing from the spindle. By incorporating air passages inside the spindle or injecting airflow from the outside, these methods attempt to remove chips, metal shavings, and other impurities adhering to the spindle end face and tool holder during automatic tool change (ATC) to meet the cleanliness requirements of machining centers and avoid problems such as decreased machining quality, increased scrap rate, and accelerated wear of the spindle and tool due to foreign matter on the mating surfaces. However, existing chip removal methods have some significant shortcomings in terms of cleaning coverage and reliability control.

[0003] In practical applications, the machining environment is complex. Despite protective measures, it is still difficult to completely avoid chip contamination of the spindle end face and tool holder during tool changes. Center-blowing in tapered bores is limited by the small orifice diameter and limited coverage, making it prone to clogging, leading to frequent and difficult cleaning and maintenance. It also requires the spindle to be designed as a hollow structure with complex sealing air passages, increasing manufacturing costs and structural complexity. On the other hand, while external cooling air blowing on the spindle has a simple structure, its airflow is easily affected by environmental interference in open spaces, making it difficult to precisely control the airflow direction and pressure. This results in unstable and unreliable tool holder cleaning during tool changes. Especially in high-cycle applications such as finishing, high-speed machining, and automated production lines, relying solely on these two methods or their combinations often fails to completely remove chips, leading to workpiece accuracy defects, part scrap, increased production costs, and reduced production efficiency.

[0004] Therefore, it is evident that existing technologies for cleaning CNC machine tool spindles and tool holders suffer from insufficient cleaning coverage and unreliable cleaning results. This is a deficiency of the existing technology.

[0005] In view of this, it is very necessary to provide a modular multi-position tool holder cleaning device and method for the spindle end face to solve the above-mentioned defects in the prior art. Summary of the Invention

[0006] The purpose of this invention is to address the shortcomings of the prior art in cleaning CNC machine tool spindles and tool holders, namely insufficient cleaning coverage and unreliable cleaning effect, by providing a modular multi-position tool holder cleaning device for the spindle end face to solve the above-mentioned technical problems.

[0007] To achieve the above objectives, the present invention provides the following technical solution: In a first aspect, the present invention provides a modular multi-posture tool holder cleaning device for spindle end face, including a ring spray box, a ring spray cover, multiple direct spray nozzles and an air circuit connection assembly. The ring spray box is detachably fixed to the front end face of the spindle flange via a connector. The ring spray box has an annular structure, with its outer diameter matching the outer diameter of the spindle flange and its inner diameter matching the nose of the spindle. The annular spray cover and the annular spray box are sealed and fixedly connected, and the two together form a closed annular air cavity. Multiple mounting positions are evenly opened on the annular spray cover along the circumference. Each installation position is equipped with a direct injection straight pipe nozzle, the air inlet end of which is connected to the annular air chamber, supporting multi-angle adjustment of the injection direction; The air circuit connection assembly includes an air inlet, a polyurethane hose, and a solenoid valve, which are disposed on the annular spray cover and communicate with the annular air chamber. The air inlet is connected to the solenoid valve through the polyurethane hose. The solenoid valve is connected to the machine tool air source and is provided with an electrical control interface for connecting to the machine tool CNC system.

[0008] By adopting the above technical solution, a modularly installable ring spray box and ring spray cover structure is designed and equipped with a multi-angle adjustable direct spray nozzle, enabling the cleaning device to flexibly adapt to tool holders of different shapes and postures. By forming an annular air chamber between the ring spray box and the ring spray cover, and using a CNC system to control the on / off state of the solenoid valve, automated, multi-posture, and all-round cleaning of the tool holder and spindle mating surface is achieved throughout the tool changing process. This effectively solves the problems of insufficient coverage, unstable effect, and difficulty in accurately coordinating with the automatic tool changing cycle of traditional cleaning methods.

[0009] Specifically, through the annular structure design of the spray box, the outer diameter of the spray box is consistent with the outer diameter of the spindle flange, and the inner diameter of the spray box is adapted to the spindle nose. This allows the device to be installed tightly against the front end of the spindle without changing the original structural layout of the machine tool, ensuring a compact overall structure and not affecting the dynamic balance of the spindle. The annular spray cover and the spray box together form a closed annular air chamber, providing a stable and uniform air pressure source for multiple direct-injection nozzles, ensuring consistent air output from each nozzle. By evenly setting multiple mounting positions along the circumference on the spray cover and configuring multi-angle adjustable direct-injection nozzles, comprehensive coverage of multiple parts such as the tool holder end face, conical surface, and joint seam is achieved, overcoming the blind spots in cleaning that exist with fixed direct-injection nozzles. By using polyurethane hoses for connection and coordinating with solenoid valves and CNC systems, automated start-stop and programmed control of the cleaning process are achieved, allowing the cleaning operation to be seamlessly integrated into the automatic tool change process, improving cleaning efficiency and intelligence.

[0010] Preferably, the connector is a hexagon socket head cap screw, and the ring spray box is locked and fixed to the front end face of the main shaft flange by the hexagon socket head cap screw.

[0011] By adopting the above technical solution and using hexagonal head screws as connectors, a reliable rigid connection between the ring spray box and the front end face of the spindle flange is achieved, which has the characteristics of high connection strength and convenient assembly and disassembly. At the same time, the hexagonal structure can save radial space, avoid interference around the spindle, meet the installation requirements in the narrow working environment of the machine tool, and ensure the connection stability of the device under high-speed rotation.

[0012] Preferably, the annular spray box has an annular disc-shaped structure.

[0013] By adopting the above technical solution, the ring spray box is designed as a ring-shaped disc structure, which not only facilitates processing and manufacturing, but also effectively reduces the overall weight and the load on the spindle. The disc structure is conducive to forming a ring-shaped air chamber with sufficient volume in a limited axial space. At the same time, its flat shape makes it easy to fit and install from the front end of the spindle, which improves the practicality and installation convenience of the device.

[0014] Preferably, the ring spray cover and the ring spray box are sealed together, and a sealing gasket or sealant is provided at the connection.

[0015] By adopting the above technical solution, a sealing gasket or sealant is applied at the connection between the ring spray cover and the ring spray box to ensure the airtightness of the annular air chamber and prevent pressure loss caused by compressed gas leakage. This ensures that the direct spray nozzle has sufficient spray pressure and cleaning power, and improves the stability of the cleaning effect.

[0016] Preferably, the direct injection straight pipe nozzle has a ball joint type universal adjustable structure, and the lower end of the direct injection straight pipe nozzle is provided with a ball joint. The mounting position is a ball socket hole. The ball joint is embedded in the ball socket hole and can rotate around the center of the ball and lock in position.

[0017] By adopting the above technical solution and utilizing the ball joint universal adjustable structure, the direct injection straight nozzle can be rotated and adjusted in multiple degrees of freedom within the ball socket through the ball joint, thereby accurately aligning with the specific contaminated area of ​​the handle. After adjustment, it can be fixed by the locking mechanism to ensure that the posture of the direct injection straight nozzle does not shift during use, achieving precise control and long-term stability of the cleaning posture, and solving the problem that traditional fixed direct injection straight nozzles cannot adapt to complex handle geometry.

[0018] Preferably, the annular spray cover has multiple mounting positions and corresponding direct injection nozzles evenly arranged circumferentially.

[0019] By adopting the above technical solution, multiple mounting positions and direct-injection nozzles are evenly arranged circumferentially on the ring spray cover, allowing airflow to spray onto the blade handle simultaneously from multiple directions, forming an enclosed cleaning field, which improves cleaning coverage and efficiency. The evenly distributed design helps to balance the airflow distribution in the air chamber, reduce local pressure differences, and further improve the consistency of cleaning effect.

[0020] Preferably, both the ring spray box and the ring spray cover are made of lightweight aluminum.

[0021] By adopting the above technical solution and using lightweight aluminum materials to manufacture the ring spray box and ring spray cover, the overall weight of the device is reduced to the maximum extent while ensuring structural strength. This effectively avoids the problem of machine tool spindle dynamic imbalance caused by excessive weight of additional devices, protects the spindle bearings, extends the service life of the equipment, and facilitates manual disassembly and assembly by operators.

[0022] Preferably, the air connection assembly further includes a quick-connect fitting, which is installed at the air inlet and connected to the solenoid valve via a polyurethane hose.

[0023] By adopting the above technical solution, quick-connect fittings are installed at the air inlet, enabling quick insertion and removal of the air circuit connection components, which greatly shortens the installation and maintenance time of the device. The quick-connect fittings, together with polyurethane hoses, not only ensure the sealing reliability of the air circuit connection, but also provide flexibility in pipeline layout, making it easy to adapt and install on different models.

[0024] Preferably, the air passage connection assembly further includes a variable diameter block, which is connected in series in the gas passage of the machine tool swivel head housing to increase the air flow rate.

[0025] By adopting the above technical solution, by connecting a variable diameter block in series in the gas channel of the machine tool swivel head box, the air flow rate is effectively increased and the airflow resistance is reduced by utilizing the diameter change characteristics of the variable diameter block. This ensures that sufficient air pressure and flow rate can still be maintained when multiple direct injection straight pipe nozzles are working at the same time, meeting the air supply requirements of high-intensity continuous cleaning operations and preventing the cleaning effect from decreasing due to insufficient air volume.

[0026] Secondly, this application also provides a method for cleaning a modular multi-pose tool holder on the spindle end face, comprising the following steps: In response to the tool change stage signal issued by the machine tool CNC system, a conduction control signal is output to the solenoid valve through the electrical control interface; The solenoid valve is controlled to open, so that the compressed gas output from the machine tool air source enters the annular air chamber through the polyurethane hose and is sprayed out through multiple multi-angle adjustable direct injection nozzles. Based on different tool change stage signals, the corresponding working mode is executed to clean the tool holder.

[0027] Preferably, the tool changing stage signals include a spindle retraction movement stage signal, a spindle tool release and lifting stage signal, and a spindle clamping new tool stage signal.

[0028] Preferably, the working modes include a pre-blowing working mode, an enhanced cleaning working mode, and a joint surface flushing working mode; The pre-blowing working mode controls the nozzle to continuously spray air towards a predetermined position on the spindle travel path based on the spindle retraction movement stage signal; The enhanced cleaning working mode controls the nozzle to continuously spray air onto the released tool holder and the spindle taper hole area based on the spindle tool release and lifting stage signal. The aforementioned interface flushing working mode controls the nozzle to continuously spray air throughout the entire process from when the spindle approaches the tool holder to when it falls above the tool holder, based on the spindle clamping new tool stage signal.

[0029] By adopting the above technical solution, the corresponding working mode is triggered by signals from different tool changing stages issued by the CNC system, achieving millisecond-level precise synchronization between cleaning actions and tool changing cycle time. The pre-blowing working mode can perform pre-judgment cleaning before the tool holder arrives, the enhanced cleaning working mode performs key flushing and combined with taper hole air blowing at the moment the tool holder leaves, and the combined surface flushing working mode provides protection throughout the new tool loading process. Thus, a continuous cleaning barrier is formed throughout the entire tool changing life cycle, eliminating the precision deviation problem caused by chip clamping, and improving the cycle time stability and product qualification rate of automated machining.

[0030] The beneficial effects of this invention are as follows: By using a modularly designed annular spray box and annular spray cover to form an annular air chamber, combined with a direct-injection straight-tube nozzle that supports multi-angle adjustment of the spray direction, it achieves all-round, dead-angle-free cleaning of the tool holder end face, tapered hole, and complex groove areas, overcoming the shortcomings of traditional fixed direct-injection straight-tube nozzles in terms of insufficient coverage and blind spots. The invention utilizes a CNC system to control the solenoid valve, strictly synchronizing the cleaning process with the automatic tool change process. Based on different tool change stage signals, it executes corresponding working modes, especially initiating pre-blowing during tool retraction and continuous airflow during tool release and clamping stages. This effectively utilizes non-cutting time and prevents particles from embedding into the mating surfaces, improving cleaning efficiency and automation. Simultaneously, the use of lightweight aluminum material and the use of hexagonal head screws for fixation reduces the weight of the device while ensuring structural strength, avoiding impact on the spindle's dynamic balance. Furthermore, the device is detachable and reusable to the same model of equipment, combining ease of installation and economy, ensuring the connection accuracy between the spindle and the tool holder and extending the equipment's service life.

[0031] Furthermore, the design principle of this invention is reliable, the structure is simple, and it has a very wide range of application prospects.

[0032] Therefore, it is evident that the present invention has substantial features and progress compared with the prior art, and the beneficial effects of its implementation are also obvious. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0034] Figure 1 A front view of a modular multi-pose tool holder cleaning device for spindle end face provided by the present invention; Figure 2 A bottom view of a modular multi-pose tool holder cleaning device for the spindle end face provided by the present invention; Figure 3 This is a schematic diagram of the installation of a modular multi-pose tool holder cleaning device for the spindle end face at the front end of the spindle, as provided by the present invention.

[0035] Among them, 1-ring spray box, 2-ring spray cover, 3-direct spray nozzle, 4-sealing gasket, 5-quick connector, 6-polyurethane hose, 7-reducing block, 8-solenoid valve, 9-internal hexagonal head screw. Detailed Implementation

[0036] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. The following embodiments are explanations of the present invention, but the present invention is not limited to the following implementation methods.

[0037] Example 1: This embodiment provides a modular multi-pose tool holder cleaning device for the spindle end face, such as... Figure 1 , Figure 2 , Figure 3 As shown, it includes a ring spray box 1, a ring spray cover 2, a direct spray nozzle 3, a sealing gasket 4, a quick connector 5, a polyurethane hose 6, a reducing block 7, a solenoid valve 8, and an internal hexagonal head screw 9. The main body of the device consists of a ring spray box 1 and a ring spray cover 2, which are detachably fixed to the front end face of the spindle flange by multiple sets of internal hexagonal head screws 9. The ring spray box 1 has an annular disc structure, and the outer diameter of the ring spray box is the same as the outer diameter of the spindle flange. The inner diameter of the ring spray box is adapted to the nose of the spindle, making it easy to fit into the spindle from the front end. Both the ring spray box 1 and the ring spray cover 2 are preferably made of lightweight aluminum, which makes the whole device lightweight and compact, reducing the impact on the dynamic balance and weight of the front end of the spindle. At the same time, the appearance is neat and does not interfere with surrounding components after installation.

[0038] After the annular spray box 1 and the annular spray cover 2 are connected, they form a closed annular ventilation cavity. The annular spray cover 2 has 6 mounting holes evenly distributed around its circumference. Each mounting hole is a ball socket hole, and a direct injection straight pipe nozzle 3 is installed inside. The direct injection straight pipe nozzle 3 adopts a ball hinge type universal adjustable structure. Its lower end is provided with a ball joint. The ball joint is embedded in the ball socket hole to form a universal hinge pair, which can rotate around the center of the ball at any angle. After the angle of the direct injection straight pipe nozzle is adjusted, the position is fixed by threaded clamping or set screw locking to ensure that the angle remains unchanged and the spray is stable during operation. A sealing gasket 4 is embedded at the contact surface between the direct injection straight pipe nozzle 3 and the mounting seat of the annular spray cover 2 to ensure the air circuit sealing performance and prevent air leakage that could lead to pressure loss. The adjustable structure can flexibly adjust the spray direction to achieve a wide coverage of the front end area of ​​the spindle. By adjusting the angle of the direct spray nozzle, multiple direct spray nozzles can be concentrated to impact the end face of the tool holder or the taper hole, or they can spray radially at multiple angles. The spray angle can also be preset along the spindle travel path to pre-blow the tool holder during spindle movement, greatly improving the cleaning reliability during tool changes.

[0039] The gas delivery system uses standard universal parts. A quick-connect connector 5 is installed at the air inlet of the ring spray cover 2, which is connected to the reducer block 7 through a polyurethane hose 6. The reducer block 7 is connected in series in the existing gas channel of the swing head box, which can effectively increase the air flow and improve the blowing force by utilizing the internal channel of the box. The other end of the polyurethane hose 6 is connected in series to the solenoid valve 8 through the quick-connect connector 5. The solenoid valve 8 is connected to the external air source of the machine tool and is electrically linked with the CNC system of the machine tool. The start and stop timing can be set by the CNC program to realize the autonomous and controllable start and stop of the cleaning device without manual intervention, which meets the requirements of automated production cycle.

[0040] This device adopts a modular design, with a simple overall structure and convenient assembly and disassembly. It can be quickly installed without modifying the spindle body structure. When multiple machine tools of the same model share the same needs, the device can be disassembled and reused across equipment, which is highly versatile and effectively reduces equipment procurement and maintenance costs.

[0041] During the assembly process, align the ring spray box 1 with the front face of the main shaft flange and tighten it evenly using multiple sets of internal hexagonal head screws 9 to ensure that the ring spray box 1 is firmly attached to the end face of the main shaft flange, guaranteeing coaxiality and installation flatness. Cover the ring spray cover 2 onto the ring spray box 1 and apply sealant evenly to the circumferential gap between the two. After the sealant has initially cured, tighten the connecting screws to form a reliably sealed annular venting cavity with the ring spray box 1 and the ring spray cover 2.

[0042] Align the ball joint at the lower end of the direct injection nozzle 3 with the ball socket of the ring spray cover 2, insert it into place, and screw it into the direct injection nozzle body. Install a sealing gasket 4 between the installation contact surface of the direct injection nozzle 3 and the ring spray cover 2, and tighten it with threads to achieve a seal and ensure that there is no air leakage at the air connection. After completing the installation of all 6 direct injection nozzles 3, manually adjust the spray angle of each direct injection nozzle 3 according to the actual cleaning needs, so that it is aligned with the predetermined cleaning area and locked in place.

[0043] During air circuit connection, install a quick-connect fitting 5 at the reserved air inlet of the ring spray cover 2. Insert one end of the polyurethane hose 6 into the quick-connect fitting 5, and connect the other end to the reducer 7 connected in series in the existing gas channel of the spindle housing. The reducer 7 is fitted and installed at the interface of the spindle housing. Utilizing the existing gas channel inside the spindle housing, connect another quick-connect fitting to the other end of the channel. Then, connect the solenoid valve 8 in series with the polyurethane hose 6 to the external air source of the machine tool to complete the air circuit connection of the entire cleaning device. After assembly, turn on the air source and power on the solenoid valve 8 to test. Check that there are no air leaks at each connection and that the direct spray nozzle is spraying normally before putting it into use.

[0044] After installation and debugging, connect the machine tool air supply and energize the solenoid valve 8; perform an air tightness test: check the connection nodes of the ring spray box 1, ring spray cover 2, direct spray nozzle 3, quick connector 5 and polyurethane hose 6 to ensure there is no gas leakage; then manually adjust the spray angle of each direct spray nozzle 3 to align it with the preset cleaning area and lock it in place to ensure spray stability.

[0045] The working process of this device is fully automatically controlled by the machine tool CNC system through the electrical control interface. According to the different stages of the automatic tool changing process, it is divided into pre-blowing working mode, enhanced cleaning working mode and mating surface flushing working mode. The pre-blowing working mode is as follows: when the machine tool CNC system finishes executing the machining command and detects the signal that the spindle is ready to retract the tool, the machine tool CNC system outputs a conduction signal to the solenoid valve 8; at this time, the direct injection straight pipe nozzle 3 continuously sprays air during the process of the spindle moving to the tool magazine, and uses the airflow to pre-clean the chips thrown out by the spindle rotation before they fall to the ground, and prevents the waste chips from adhering to the surface of the tool holder to be released.

[0046] The enhanced cleaning working mode is as follows: when the machine tool CNC system detects that the spindle has completed positioning and entered the tool release and lifting stage, the solenoid valve 8 is kept in the conducting state or confirmed again; the direct injection straight pipe nozzle 3 performs secondary enhanced flushing on the tool holder that has detached from the spindle taper hole, and at the same time, it cooperates with the original taper hole center blowing function of the machine tool to form double cleaning inside and outside, preventing waste chips from falling into the spindle taper hole.

[0047] The specific working mode of the mating surface flushing is as follows: when the machine tool CNC system controls the robot arm to grab the new tool and drive the spindle to move down for clamping, a signal is detected that the spindle has entered the stage of clamping the new tool, and the solenoid valve 8 is continuously turned on; the direct injection straight pipe nozzle 3 continuously sprays air throughout the entire process before the new tool holder enters the spindle tapered hole, flushing the outer circle and end face of the tool holder to ensure that foreign objects do not remain on the mating surface and to eliminate positioning errors caused by chip clamping.

[0048] When the machine tool CNC system detects that the tool change action is completed and the spindle starts to accelerate and rotate for machining, the machine tool CNC system outputs a shut-off signal to the solenoid valve 8 to cut off the air supply; the device remains in a static standby state during non-tool change machining stages to reduce energy consumption and noise.

[0049] Example 2: This embodiment provides a modular multi-position tool holder cleaning method for spindle end face, applicable to chip cleaning of CNC machine tool spindle end face and tool holder during automatic tool changing, implemented based on the cleaning device described in Embodiment 1, including: The ring spray box 1 is detachably fixed to the front end face of the spindle flange using multiple sets of internal hexagonal head screws 9, ensuring that the outer diameter of the ring spray box is consistent with the outer diameter of the spindle flange and the inner diameter of the ring spray box is adapted to the spindle nose. The ring spray cover 2 is placed on the ring spray box 1, and sealant is evenly applied to the circumferential gaps and the screws are tightened to form a closed annular ventilation cavity. Six direct injection straight pipe nozzles 3 are installed in sequence. The direct injection straight pipe nozzles 3 adopt a ball joint universal adjustable structure, and the air passage is sealed by the sealing gasket 4. Then, they are connected to the solenoid valve 8 and the machine tool air source through quick connector 5, polyurethane hose 6, and reducer block 7 to complete the overall assembly of the device.

[0050] Connect the machine tool air supply and energize the solenoid valve 8. Check all connections of the ring spray box 1, ring spray cover 2, direct spray nozzle 3, quick connector 5, and polyurethane hose 6 to ensure there is no gas leakage. Manually adjust the spray direction of each direct spray nozzle 3 and fix it to a preset posture. The preset postures include: concentrated impact posture, where multiple direct spray nozzles are concentrated and aligned with the tool holder end face or tapered hole; pre-blowing posture, where multiple direct spray nozzles are set along the spindle travel path; and radial coverage posture, where multiple direct spray nozzles are set radially at multiple angles to ensure clean coverage throughout the tool change process.

[0051] When the spindle finishes machining and is ready to retract the tool, the machine tool CNC system sends a spindle retraction movement stage signal. In response to this signal, the solenoid valve 8 is energized to start the cleaning device. During the process of the spindle moving above the tool magazine, the direct injection nozzle continuously sprays air to pre-blow the tool holder and block the waste chips falling from the spindle rotation, so as to prevent the waste chips from adhering to the surface of the tool holder to be released.

[0052] When the machine tool's CNC system sends a signal indicating the spindle is unclogged and lifted, the cleaning device continuously sprays air to perform a secondary cleaning of the tool holder that has detached from the spindle. At the same time, it works in conjunction with the machine tool's original taper hole blowing function, providing double protection to prevent waste chips from entering the spindle taper hole.

[0053] The machine tool CNC system sends a signal to the spindle to hold the new tool. From the moment the tool holder approaches the tool holder until it is fully in place, the cleaning device keeps spraying air to continuously flush the outer circle and end face of the tool holder, ensuring that there are no chips or impurities left on the mating surface, and avoiding chip jamming that could cause inaccurate positioning.

[0054] After the tool change is completed, the machine tool CNC system sends a tool change completion signal, controls the solenoid valve 8 to de-energize, and shuts down the cleaning device. During machining intervals or in the preparation stage for the next tool change, the device can be started and stopped at any time through the CNC program according to the tool tip cleaning requirements, and the tool tip and surrounding debris can be cleaned in real time to ensure the precision of finishing.

[0055] When multiple devices of the same model require cleaning functions at different times, the cleaning device can be disassembled from the current spindle and installed on the spindle end face of another device of the same model, achieving modular sharing and reducing equipment investment and maintenance costs.

[0056] The above-disclosed embodiments are merely preferred embodiments of the present invention, but the present invention is not limited thereto. Any non-creative variations that can be conceived by those skilled in the art, as well as any improvements and modifications made without departing from the principles of the present invention, should fall within the protection scope of the present invention.

Claims

1. A method for cleaning a modular multi-pose tool holder on the spindle end face, characterized in that, The spindle end face modular multi-posture tool holder cleaning method is applied to the spindle end face modular multi-posture tool holder cleaning device, which includes a ring spray box, a ring spray cover, multiple direct spray straight pipe nozzles and air circuit connection components. The ring spray box is detachably fixed to the front end face of the spindle flange via a connector. The ring spray box has an annular structure, with its outer diameter matching the outer diameter of the spindle flange and its inner diameter matching the spindle nose. The annular spray cover and the annular spray box are sealed and fixedly connected, and the two together form a closed annular air cavity. Multiple mounting positions are evenly opened on the annular spray cover along the circumference. Each installation position is equipped with a direct injection straight pipe nozzle, and the air inlet end of the direct injection straight pipe nozzle is connected to the annular air chamber; The air circuit connection assembly includes an air inlet, a polyurethane hose, and a solenoid valve, which are disposed on the annular spray cover and communicate with the annular air chamber. The air inlet is connected to a solenoid valve via a polyurethane hose. The solenoid valve is connected to the machine tool's air source and is equipped with an electrical control interface for connecting to the machine tool's CNC system. The method includes the following steps: In response to the tool change stage signal issued by the CNC system of the machine tool, the solenoid valve is output to the solenoid valve through the electrical control interface to control the solenoid valve to open, so that the compressed gas output from the machine tool air source enters the annular air chamber through the polyurethane hose and is ejected through multiple multi-angle adjustable direct injection nozzles. Based on different tool change stage signals, the corresponding working mode is executed to clean the tool holder; The tool changing stage signals include the spindle retraction movement stage signal, the spindle tool release and lifting stage signal, and the spindle clamping new tool stage signal. The working modes include pre-blowing working mode, enhanced cleaning working mode, and joint surface flushing working mode; The pre-blowing working mode controls the nozzle to continuously spray air towards a predetermined position on the spindle travel path based on the spindle retraction movement stage signal; The enhanced cleaning working mode controls the nozzle to continuously spray air onto the released tool holder and the spindle taper hole area based on the spindle tool release and lifting stage signal. The aforementioned interface flushing working mode controls the nozzle to continuously spray air throughout the entire process from when the spindle approaches the tool holder to when it falls above the tool holder, based on the spindle clamping the new tool stage signal. Manually adjust the spray direction of each direct-injection straight nozzle and fix it to a preset posture. The preset postures include: concentrated impact posture, in which multiple direct-injection straight nozzles are concentrated and aligned with the end face of the tool holder or the tapered hole; pre-blowing posture, in which multiple direct-injection straight nozzles are set along the spindle travel path; and radial coverage posture, in which multiple direct-injection straight nozzles are set radially at multiple angles; used for full-coverage cleaning during tool changing.

2. The method according to claim 1, characterized in that, The connector is an internal hexagonal head screw; The ring spray box is fixed to the front end face of the main shaft flange by internal hexagonal head screws.

3. The method according to claim 1, characterized in that, The ring spray box has a ring-shaped disc structure.

4. The method according to claim 1, characterized in that, The direct injection straight pipe nozzle has a ball joint type universal adjustable structure. The lower end of the direct injection straight pipe nozzle is provided with a ball joint. The mounting position is a ball socket hole. The ball joint can be inserted into the ball socket hole and rotate around the center of the ball.

5. The method according to claim 1, characterized in that, The ring spray cover and the ring spray box are sealed together, and a sealing gasket or sealant is provided at the connection.

6. The method according to claim 1, characterized in that, The air circuit connection assembly also includes a quick-connect fitting, which is installed at the air inlet and connected to the solenoid valve via a polyurethane hose.

7. The method according to claim 1, characterized in that, The air passage connection assembly also includes a variable diameter block, which is connected in series in the gas passage of the machine tool swivel head housing to increase the air flow rate.

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