Machine tool and tool cleaning control method applied to machine tool

Abstract

The invention relates to the field of cutter machine tool control, in particular to a machine tool and a cutter cleaning control method applied to the machine tool. The machine tool comprises a machine tool body, a spindle box, a spindle, a tool magazine assembly, a first ventilation system, a second ventilation system and a control system; the first ventilation system and the second ventilation system are connected with the control system, the first ventilation system is communicated with a cutter installing opening in the main shaft, and the control system controls the first ventilation system to be started between the cutter installing position and the middle position of the main shaft so as to conduct air blowing work. And the second ventilation system is controlled to be started between the position of the main shaft from the middle position to the position of the tool taking position so as to blow air. The first ventilation system and the second ventilation system are responsible for tool blowing in a specific stage, so that the tool is cleaned as much as possible.

Description

Technical Field

[0001] The present invention relates to the field of machine tool control, and more particularly, to a machine tool and a tool cleaning control method applied to the machine tool. Background Art

[0002] For the existing drill tapping machine, the chip treatment on the taper shank of the tool generally integrates blowing air inside the spindle or blowing air by an external fixed nozzle. The above chip cleaning methods for the taper shank have defects. The chip removal effect of integrating inside the spindle is limited. For example, when the spindle is separated from the tool, the gap between the spindle and the tool becomes larger, and the air pressure becomes smaller, thus affecting the cleaning effect. The external nozzle type blowing cleaning is limited by the relatively high cost of the spindle structure, and there will also be problems of structural interference, resulting in the external nozzle being unable to completely blow to the tool. For example, when the spindle holds the tool, the overlapping part between the spindle and the tool cannot be blown by the external nozzle; in addition, in some cases, the components inside the spindle box interfere with the installation of the nozzle or block the blowing of the nozzle, so the single nozzle cleaning is also inconvenient.

[0003] Therefore, how to improve the chip treatment effect on the taper shank and improve the reliability and stability of tool installation is a technical problem that needs to be solved urgently by those skilled in the art. Summary of the Invention

[0004] To solve the above problems, the purpose of the present invention is to provide a machine tool and a tool cleaning control method applied to the machine tool to solve the respective defects of the existing blowing air inside the spindle and blowing air by the external nozzle.

[0005] The purpose of the present invention is achieved by the following technical solutions:

[0006] A machine tool provided by the present invention includes:

[0007] A bed body, including a base and a column provided on the base;

[0008] A spindle box, movably mounted on the column;

[0009] A spindle, provided on the spindle box, with a tool mounting opening provided on the spindle, and the spindle has a tool mounting position, an intermediate position, and a tool taking position;

[0010] A tool magazine assembly, including a tool magazine support provided at the top of the column and a tool magazine provided on the tool magazine support, with a plurality of tools rotatably provided on the tool magazine, the tool magazine having a tool taking opening, and each tool can be rotated to the tool taking opening, and the spindle clamps the tool through the tool mounting opening at the tool taking opening;

[0011] A first ventilation system, provided on the spindle and communicating with the tool mounting opening, for ventilating into the tool mounting opening;

[0012] The second ventilation system is arranged on the tool magazine. The second ventilation system includes a ventilation component, and the air outlet of the ventilation component faces the tool at the tool taking port.

[0013] The control system is connected to the first ventilation system and the second ventilation system. The control system is used to control the first ventilation system to start when the main shaft moves from the tool loading position to the intermediate position; the control system is also used to control the second ventilation system to start when the main shaft moves from the intermediate position to the tool taking position.

[0014] Further, an installation groove is provided on the back of the tool magazine. The ventilation component includes a ventilation pipe; the second ventilation system further includes a first control valve arranged on the ventilation pipe. The ventilation pipe is arranged along the tool magazine bracket into the installation groove, and the air outlet of the ventilation pipe faces the installation conical surface of the tool; the first control valve is connected to the control system and is used to control the on-off of the ventilation pipe.

[0015] Further, the ventilation pipe includes a flow dividing valve, a first air injection pipe and a second air injection pipe. The first air injection pipe and the second air injection pipe are both connected to the flow dividing valve, and the air outlets of the first air injection pipe and the second air injection pipe face different azimuth points of the installation conical surface.

[0016] Further, the ventilation component further includes a trachea support frame, and the trachea support frame includes:

[0017] A support plate, fastened to the installation groove, and the flow dividing valve is arranged on the support plate;

[0018] A first support structure, arranged on the support plate, extending towards the main shaft direction, and a first support hole is provided on the first support structure. The first air injection pipe passes through the first support hole;

[0019] A second support structure, arranged on the support plate, spaced from the first support structure and extending towards the main shaft direction, and a second support hole is provided on the second support structure. The second air injection pipe passes through the second support hole.

[0020] Further, the air outlet of the ventilation component faces between one-fifth and two-thirds of the distance from the apex to the bottom of the installation conical surface of the tool; the intermediate position is between one-fifth and two-thirds of the distance from the apex to the bottom of the installation conical surface of the tool.

[0021] Further, the first ventilation system includes:

[0022] A ventilation nozzle, arranged on the main shaft, and an air inlet valve port and an air outlet valve port are provided on the ventilation nozzle;

[0023] An air passing part, arranged on the spindle box coaxially with the main shaft, and an air passing inlet and an air passing outlet are provided on the air passing part. The air passing inlet is communicated with the air outlet valve port; the air passing outlet is communicated with the tool loading port of the main shaft;

[0024] A second control valve is provided on the intake passage communicating with the intake valve port. The second control valve is connected to a control system, and the control system is used to control the on / off of the second control valve.

[0025] The machine tool further includes a tool clamping arm. One end of the tool clamping arm is connected to the column, and the other end is connected to the air passage part. In a state where the spindle is between the tool loading position and the intermediate position, the air intake port is communicated with the air outlet valve port.

[0026] In a second aspect of the embodiments of the present invention, a tool cleaning control method is provided, which is applied to the machine tool of any one of the above. The method includes the following steps:

[0027] S100: Based on the tool change command, the spindle located at the working position moves to the tool loading position, places the tool on the spindle onto the tool taking opening of the tool magazine, and moves through the intermediate position to the tool taking position.

[0028] Among them, when the spindle moves from the tool loading position to the intermediate position, the control system controls the first ventilation system to start to supply air into the tool loading opening; when the spindle moves from the intermediate position to the tool taking position, the control system controls the second ventilation system to start to blow air to the tool.

[0029] Further, after step S100, it further includes:

[0030] S200: After the spindle moves to the tool taking position, the tool magazine rotates to make the tool to be installed located at the tool taking opening.

[0031] Among them, after the tool to be installed is located at the tool taking opening, the control system controls the second ventilation system to supply air.

[0032] Further, after step S200, it further includes:

[0033] S300: Based on the tool taking command, the spindle moves to the tool taking position and moves through the intermediate position to the tool loading position to install the tool on the tool magazine onto the spindle.

[0034] Among them, when the spindle moves from the tool taking position to the intermediate position, the control system controls the second ventilation system to start to blow air to the tool; when the spindle moves from the intermediate position to the tool loading position, the control system controls the first ventilation system to start to supply air into the tool loading opening.

[0035] Further, the tool cleaning control method further includes:

[0036] In step S100, the control system controls the second ventilation system to start before the spindle moves to the intermediate position to blow air to the tool;

[0037] In step S300, the control system controls the first ventilation system to start before the spindle moves to the intermediate position to supply air into the tool loading opening;

[0038] Among them, the middle position is between one-third and two-thirds of the distance from the apex to the bottom of the mounting conical surface of the tool.

[0039] The beneficial effects of the present invention are as follows: A first ventilation system and a second ventilation system are provided on the machine tool. The control system controls the first ventilation system to start blowing air between the position of the spindle from the tool loading position to the middle position; the control system controls the second ventilation system to start blowing air between the position of the spindle from the middle position to the tool picking position. By having the first ventilation system and the second ventilation system each responsible for blowing air on the tools in specific parts, the tools can be cleaned to the greatest extent possible. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The drawings described herein are used to provide a further understanding of the present invention and form a part of this application. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0041] Figure 1 is a schematic structural diagram of the machine tool of the present invention;

[0042] Figure 2 is a schematic structural diagram of another perspective of the machine tool of the present invention;

[0043] Figure 3 is a schematic partial structural diagram of the machine tool of the present invention;

[0044] Figure 4 is an enlarged schematic diagram of the first ventilation system of the present invention;

[0045] Figure 5 is a schematic structural diagram of the tool disc of the present invention;

[0046] Figure 6 is a schematic structural diagram of the ventilation component of the present invention;

[0047] Figure 7 is a schematic diagram of the tool changing process of the present invention;

[0048] Figure 8 is a schematic diagram of the principle of the control system controlling the ventilation system of the present invention;

[0049] Figure 9 is a flowchart of a tool cleaning control method of the present invention.

[0050] Among them, the reference numerals are:

[0051] 1 - machine tool body, 11 - base, 12 - column, 13 - workbench,

[0052] 2 - spindle box;

[0053] 3 - spindle, 31 - tool loading opening;

[0054] 4 - Tool magazine assembly, 41 - Tool magazine support, 42 - Tool magazine, 421 - Installation slot, 43 - Tool;

[0055] 5 - First ventilation system, 51 - Ventilation nozzle, 511 - Intake valve port, 512 - Exhaust valve port, 52 - Air passage part, 521 - Air passage inlet, 522 - Air passage outlet, 53 - Second control valve;

[0056] 6 - Second ventilation system, 61 - Ventilation component, 611 - Diverting valve, 612 - Support plate, 613 - First spray pipe, 614 - Second spray pipe, 615 - First support structure, 616 - Second support structure, 62 - First control valve;

[0057] 7 - Control system;

[0058] 8 - Tool clamping arm;

[0059] 100 - Tool loading position, 200 - Intermediate position, 300 - Tool picking position, 400 - Tool picking opening, 500 - Blowing preset position. Detailed implementation mode

[0060] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0061] In the first aspect of the embodiments of the present invention, a machine tool is provided. Referring to Figure 1 , Figure 2 , Figure 3 and Figure 7 , it includes a bed body 1, a spindle box 2, a spindle 3, a tool magazine assembly 4, a first ventilation system 5, a second ventilation system 6 and a control system 7. The bed body 1 includes various components of the machine tool. For example, a base 11, a column 12 and a workbench 13. The workbench 13 is movably arranged on the base 11, the column 12 is arranged on the base 11, and the spindle box 2 is movably arranged up and down on the column 12. The spindle 3 is arranged on the spindle box 2, and a tool loading opening 31 is arranged on the spindle 3, and the tool loading opening 31 is used for clamping a tool 43. The tool magazine assembly 4 includes a tool magazine support 41 arranged at the top of the column 12 and a tool magazine 42 arranged on the tool magazine support 41. A plurality of tools 43 are rotatably arranged on the tool magazine 42. The tool magazine 42 has a tool picking opening 400, and each tool 43 can be rotated to the tool picking opening 400, and the spindle 3 clamps the tool 43 through the tool loading opening 31 at the tool picking opening 400.

[0062] The first ventilation system 5 is arranged on the main shaft 3 and communicates with the tool loading port 31 for ventilating into the tool loading port 31; the second ventilation system 6 is arranged on the tool magazine 42. The second ventilation system 6 includes a ventilation component 61, and the air outlet of the ventilation component 61 faces the tool 43 on the tool taking port 400.

[0063] The main shaft 3 has a tool loading position 100, an intermediate position 200 and a tool taking position 300. Specifically, during the process of tool change or tool installation of the main shaft 3, it will be in different positions. For example, during the operation, if the tool 43 on the main shaft 3 needs to be changed, at this time, the main shaft 3 needs to move from the working position to the tool taking position 300 for tool change. Refer to Figure 7 , first, the tool magazine 42 rotates the position for storing the tool 43 to be coaxial with the tool loading position 100. The main shaft 3 moves from the working position to the tool loading position 100, and the main shaft 3 moves upward, so that the tool 43 on the main shaft 3 is placed on the tool taking port 400 of the tool magazine 42. Then, the main shaft 3 continues to move upward until it moves to the tool taking position 300. When the main shaft 3 is at the tool taking position 300, the tool 43 on the tool magazine 42 rotates, so that the tool 43 to be installed is located coaxial with the main shaft 3. An intermediate position 200 is arranged between the tool loading position 100 and the tool taking position 300, and the position of this intermediate position 200 can be set according to specific situations or requirements. After the tool 43 to be installed rotates into place, the main shaft 3 moves downward, moves from the tool taking position 300 to the intermediate position 200, and then moves from the intermediate position 200 to the tool loading position 100.

[0064] Among them, whether the main shaft 3 moves from bottom to top or from top to bottom, during the displacement of the main shaft 3 from the tool loading position 100 to the intermediate position 200, the control system 7 controls the first ventilation system 5 to start blowing; during the displacement of the main shaft 3 from the intermediate position 200 to the tool taking position 300, the control system 7 controls the second ventilation system 6 to start blowing. That is to say, the intermediate position 200 is the conversion point of the ventilation system. When reaching the intermediate position 200, another ventilation system is switched to blow; and, the first ventilation system 5 and the second ventilation system 6 do not work simultaneously in most stages. When one system starts, the other system shuts down to save resources.

[0065] In this application, the first ventilation system 5 and the second ventilation system 6 are arranged on the machine tool. The control system 7 controls the first ventilation system 5 to start blowing between the position of the main shaft 3 from the tool loading position 100 to the intermediate position 200; the control system 7 controls the second ventilation system 6 to start blowing between the position of the main shaft 3 from the intermediate position 200 to the tool taking position 300. By having the first ventilation system 5 and the second ventilation system 6 each be responsible for blowing the tool 43 at specific parts, the tool 43 can be cleaned to the greatest extent possible.

[0066] In a specific embodiment, Figure 5 、Figure 6 and Figure 8 , an installation groove is provided on the back of the tool magazine 42, and threaded holes are provided at the bottom of the groove body for the installation of the ventilation assembly 61. The ventilation assembly 61 includes a ventilation pipe. The second ventilation system 6 further includes a first control valve 62 provided on the ventilation pipe. The ventilation pipe can be selected as a flexible hose and is routed along the truss structure of the tool magazine bracket 41 into the installation groove 421. The air outlet of the ventilation assembly 61 faces the installation taper of the tool 43, and the air outlet adopts a replaceable nozzle design. The first control valve 62 is connected to the control system 7 for controlling the on / off of the ventilation pipe. The air outlet of the ventilation pipe is arranged in the installation groove to reduce the interference or occlusion of other components, facilitating blowing air on the tool 43 on the tool magazine 42 or the spindle 3.

[0067] Of course, an adjustment module can also be added to the control system 7 to automatically adjust the jet pressure according to the temperature of the tool 43. After detecting the temperature of the tool 43, it is compared with the standard temperature, and temperature compensation is set based on the standard temperature, that is, for every 1°C increase in temperature, the air pressure is increased according to the setting. For example, the standard temperature is 21°C, and for every 1°C increase in the temperature of the tool 43, the blowing air pressure is increased by 0.1 MPa.

[0068] In a specific embodiment, referring to Figure 5 and Figure 6 , the ventilation pipe includes a flow dividing valve 611, a first air injection pipe 613 and a second air injection pipe 614. The flow dividing valve 611 adopts a Y-shaped flow dividing joint. The first air injection pipe 613 and the second air injection pipe 614 are both connected to the flow dividing valve 611. The air outlets of the first air injection pipe 613 and the second air injection pipe 614 face different azimuth points of the installation taper, and can blow air on the tool 43 simultaneously to improve the cleaning effect on the tool 43.

[0069] Furthermore, a pulse control module is added to the control system 7 to make the blowing air intermittent and enhance the chip peeling effect. For example, after the second ventilation system 6 is started, control the first air injection pipe 613 and the second air injection pipe 614 to conduct and blow air intermittently and alternately to improve the cleaning effect of blowing air on the tool 43. In order to increase the cleaning area of the tool 43 as much as possible, the air outlet of the ventilation assembly 61 faces between one-fifth and two-thirds from the apex to the bottom of the installation taper of the tool 43, and the middle position 200 is between one-fifth and two-thirds from the apex to the bottom of the installation taper of the tool 43. For example, the air outlets of the air injection pipes (including the first air injection pipe 613 and the second air injection pipe 614) face the approximate middle position of the taper of the tool 43, so that the air flow covers up and down along the taper to increase the cleaning area.

[0070] In a specific embodiment, referring to Figure 5 and Figure 6, the ventilation component 61 further includes a tracheal support frame, which includes a support plate 612, a first support structure 615, and a second support structure 616. The support plate 612 is fixed to the bottom of the installation groove by bolts, and the shunt valve 611 is arranged on the support plate 612. The first support structure 615 and the second support structure 616 are arranged at intervals on both sides of the support plate 612, and both the first support structure 615 extend towards the main shaft 3. A first support hole is arranged on the first support structure 615, and the first jet pipe 613 passes through the first support hole; a second support hole is arranged on the second support structure 616, and the second jet pipe 614 passes through the second support hole. The support holes (including the first support hole and the second support hole) play a supporting role for the jet pipes.

[0071] Further, the support structures (including the first support structure 615 and the second support structure 616) are rotatably arranged on the support plate 612, and the outlet angle of the jet pipe is adjusted by rotation. Preferably, the support structure rotates around an axis perpendicular to the main shaft 3.

[0072] Further, the first support hole and the second support hole are rectangular holes and extend along the direction of the main shaft 3. The rectangular holes facilitate the adjustment of the position of the jet pipe. In this embodiment, through the design of the tracheal support frame, the stable support and flexible adjustment of the double jet pipes are realized.

[0073] In a specific embodiment, referring to Figure 3 , Figure 4 and Figure 8 , the first ventilation system 5 includes a ventilation nozzle 51, a gas passing part 52, and a second electromagnetic valve 53. The ventilation nozzle 51 is arranged on the main shaft 3, and an air inlet valve port 511 and an air outlet valve port 512 are arranged on the ventilation nozzle 51. Preferably, the air outlet valve port 512 is a cylindrical pipe, an elastic hole is arranged on the ventilation nozzle 51, an elastic structure is arranged in the elastic hole, and the cylindrical pipe is arranged in the elastic hole and connected with the elastic structure. The gas passing part 52 is coaxially arranged on the main shaft box 2 with the main shaft 3, and a gas passing inlet 521 and a gas passing outlet 522 are arranged on the gas passing part 52.

[0074] The second control valve 53 is arranged on the air inlet passage communicating with the air inlet valve port 511. The second control valve 53 is connected with the control system 7, and the control system 7 is used to control the on-off of the second control valve 53. The air inlet valve port 511 is communicated with the second electromagnetic valve 53, the air outlet valve port 512 is cooperatively communicated with the gas passing inlet 521, and the gas passing outlet 522 is communicated with the tool loading port 31 of the main shaft 3. The machine tool further includes a tool clamping arm 8. One end of the tool clamping arm 8 is connected to the column 12, and the other end is connected to the gas passing part 52. In the state where the main shaft 3 is between the tool loading position 100 and the middle position 200, the gas passing inlet 521 is communicated with the air outlet valve port 512;

[0075] Specifically, when the main shaft 3 is in a state between the tool loading position 100 and the intermediate position 200, the air inlet 521 is in close contact with the air outlet valve port 512. When the main shaft 3 moves upward, the tool clamping arm 8 will exert a certain pressure on the air passing part 52 to block the upward movement of the passing part 52, so that the displacement of the main shaft 3 moving upward is greater than the displacement of the passing part 52 moving upward, thereby making the air outlet valve port 512 in close contact with the air inlet 521. Due to the setting of the elastic structure, when the air outlet valve port 512 pushes against the air inlet 521, the air outlet valve port 512 has a certain elastic space, reducing the strong collision between the air outlet valve port 512 and the air inlet 521.

[0076] The second aspect of the embodiment of the present invention provides a tool cleaning control method, referring to Figure 3 、 Figure 7 and Figure 9 , this method is applied to the above-mentioned machine tool, and the method includes the following steps:

[0077] S100: Based on the tool change command, the main shaft 3 located at the working position moves upward to the tool loading position 100, places the tool 43 on the main shaft 3 on the tool taking port 400 of the tool magazine 42, and moves to the tool taking position 300 through the intermediate position 200;

[0078] Among them, when the main shaft 3 moves from the tool loading position 100 to the intermediate position 200, the control system 7 controls the first ventilation system 5 to start supplying air into the tool loading port 31; when the main shaft 3 moves from the intermediate position 200 to the tool taking position 300, the control system 7 controls the second ventilation system 6 to start blowing air to the tool 43.

[0079] Specifically, during the working process of the main shaft 3, when a tool change command is received, it will move upward from the working position to the tool loading position 100, and the main shaft 3 places the tool 43 on the tool taking port 400 of the tool magazine 42 at the tool loading position 100. When the main shaft 3 is at the tool loading position 100, it will trigger the first start command, so that the control system 7 controls the first ventilation system 5 to start the blowing work. At this time, the main shaft 3 and the tool 43 are still in an approximately sealed state. When the main shaft 3 moves upward, there will be a gap between the main shaft 3 and the tool 43, and this gap will gradually increase. The air flow of the first ventilation system 5 sprays out from the tool loading port 31 through the gap between the main shaft 3 and the tool 43, and the air flow of the first ventilation system 5 plays a role in cleaning the tool 43. When the main shaft 3 moves from the tool loading position 100 to the intermediate position 200, the second start command and the first air stop command are triggered. According to the second start command, the control system 7 controls the second ventilation system 6 to start blowing air, and the control system 7 controls the first ventilation system 5 to stop supplying air according to the first air stop command.

[0080] When the main shaft 3 moves from the tool loading position 100 to the intermediate position 200, the second ventilation system 6 needs to be activated for blowing. The specific advantages include: First, when the main shaft 3 is at the intermediate position 200, the gap between the main shaft 3 and the tool 43 is already large enough, so that the impact force of the air pressure ejected by the first ventilation system 5 on the tool 43 is reduced. To maintain a good cleaning effect, the second ventilation system 6 needs to be activated at this time. Second, before the main shaft 3 reaches the intermediate position 200, the tool loading port 31 of the main shaft 3 covers most of the conical surface area of the tool 43, making it impossible for the second ventilation system 6 to effectively blow the tool 43. At this time, only the first ventilation system 5 is used; when the main shaft 3 reaches the intermediate position 200, most of the conical surface area of the tool 43 is exposed at this time, and the second ventilation system 6 can effectively clean the tool 43 from the outside of the main shaft 3. At this time, the cleaning effect of the first ventilation system 5 is weakened. Therefore, the second ventilation system 6 is activated to blow the tool 43 to ensure a better cleaning effect.

[0081] In one embodiment, referring to Figure 3 、 Figure 7 and Figure 9 , after step S100, it further includes:

[0082] S200: After the main shaft 3 moves to the tool picking position 300, the tool magazine 42 rotates to make the tool 43 to be installed located at the tool picking port 400;

[0083] Wherein, after the tool 43 to be installed is located at the tool picking port 400, the control system 7 controls the second ventilation system 6 to supply air.

[0084] After the main shaft moves to the tool picking position 300, at this time, the position of the main shaft 3 no longer interferes with the rotation of the tool magazine 42, and the tool magazine 42 can rotate, so that the tool 43 to be installed is in place, and the second ventilation system 6 is used to blow and clean the tool 43 to be installed.

[0085] Specifically, the main shaft 3 continues to move upward from the intermediate position 200. When the main shaft 3 reaches the tool picking position 300, a rotation command for the tool magazine 42 can be activated, so that the tool 43 to be installed is located at a position coaxial with the main shaft 3, waiting to be clamped by the main shaft 3. During this process, the second ventilation system 6 blows and cleans the tool 43 to be installed. After the tool 43 to be installed is in place, the main shaft 3 moves downward from the tool picking position 300 to the intermediate position 200. At this time, a third start command and a second air stop command will be triggered. According to the third start command, the control system 7 controls the first ventilation system 5 to start. According to the second stop command, the control system 7 controls the second ventilation system 6 to stop supplying air.

[0086] The principle is that when the main shaft 3 moves from the tool-taking position 300 to the intermediate position 200, the main shaft 3 already contains most of the tapered surface of the tool 43. The gap between the main shaft 3 and the tool 43 is small enough. At this time, the air supply to the tool mounting opening 31 of the main shaft 3 is sufficient to clean the tool 43. In addition, since the main shaft 3 already contains most of the tapered surface of the tool 43, the second air supply system 6 cannot blow onto the tapered surface of the tool 43 over a large area.

[0087] In this application, a first air supply system 5 and a second air supply system 6 are provided on the machine tool. The control system 7 controls the first air supply system 5 to start blowing air when the main shaft 3 moves between the tool mounting position 100 and the intermediate position 200. The control system 7 controls the second air supply system 6 to start blowing air when the main shaft 3 moves between the intermediate position 200 and the tool-taking position 300. By having the first air supply system 5 and the second air supply system 6 each responsible for blowing air on the tool 43 at specific positions, the tool 43 can be cleaned to the greatest extent possible.

[0088] In the above embodiments, the steps executed based on the tool change command have been described. These steps are the process of the main shaft 3 changing the tool 43 during the machining process. In addition, there are also steps before the tool change, that is, when the machine tool is just started and there is no tool 43 on the main shaft 3, and it is necessary to clamp the tool 43 from the tool magazine 42.

[0089] In one embodiment, referring to Figure 3 、 Figure 7 and Figure 9 , after step 200, it further includes:

[0090] S300: Based on the tool-taking command, the main shaft 3 moves to the tool-taking position 300 and passes through the intermediate position 200 to move to the tool mounting position 100 to install the tool 43 on the tool magazine 42 onto the main shaft 3; this state is the preparation for installing the tool 43 after the machine tool is started.

[0091] Wherein, when the main shaft 3 moves from the tool-taking position 300 to the intermediate position 200, the control system 7 controls the second air supply system 6 to start blowing air onto the tool 43; when the main shaft 3 moves from the intermediate position 200 to the tool mounting position 100, the control system 7 controls the first air supply system 5 to start supplying air into the tool mounting opening 31.

[0092] After the machine tool is started, based on the tool fetching command, the spindle 3 moves to the tool fetching position 300. The tool magazine 42 rotates to position the tool 43 to be installed, which needs to be used, at a position coaxial with the spindle 3. At this time, after the tool magazine 42 rotates, a fourth start command will be triggered. According to the fourth start command, the control system 7 will control the second ventilation system 6 to start blowing air to clean the tool 43, so as to prepare for the spindle 3 to grasp the tool 43. When the spindle 3 moves from the tool fetching position 300 to the intermediate position 200, a fifth start command and a third air stop command will be triggered. According to the fifth start command, the control system controls the first ventilation system 5 to start, and according to the third air stop command, the control system 7 will control the second ventilation system 6 to stop supplying air until the spindle 3 moves to the tool loading position 100 to grasp the tool 43. For the specific blowing process and principle, refer to the above tool change process and will not be elaborated here.

[0093] After the tool mounting port 31 of the spindle 3 grasps the tool 43, the next step is to move to the working position for machining. Therefore, after the spindle 3 grasps the tool 43, the control system 7 controls both the first ventilation system 5 and the second ventilation system 6 to stop supplying air.

[0094] In one embodiment, referring to Figure 3 、 Figure 7 and Figure 9 , the tool cleaning control method further includes:

[0095] In step S100, the control system 7 controls the second ventilation system 6 to start before the spindle 3 moves to the intermediate position 200 to blow air to the tool 43;

[0096] Specifically, when the spindle 3 moves from the tool loading position 100 to the intermediate position 200, it is the first ventilation system 5 that starts to blow air to clean the tool 43. When the spindle 43 reaches the intermediate position 200, the second ventilation system 6 will be switched to start blowing air, and the first ventilation system 5 will stop supplying air. To ensure the cleaning effect, in this embodiment, before the spindle 3 reaches the intermediate position 200 at a first preset position (the first preset position is located between the tool loading position 100 and the intermediate position 200), the second ventilation system 6 starts to blow air, so that during the period or displacement from the first preset position to the intermediate position 200, both the first ventilation system 5 and the second ventilation system 6 start to blow air to the tool 43. When the spindle 3 reaches the intermediate position 200, the control system 7 controls the first ventilation system 5 to stop supplying air, and at this time the second ventilation system 6 keeps blowing air.

[0097] In step S300, the control system 7 controls the first ventilation system 5 to start before the spindle 3 moves to the intermediate position 200 to supply air into the tool mounting port 31.

[0098] Specifically, in this embodiment, it is the tool-taking action after the machine tool is started. After the machine tool is started, the spindle 3 needs to clamp the tool 43 from the tool magazine 42. Therefore, the spindle 3 needs to move from the tool-taking position 300 to the tool-loading position 100. During the displacement of the spindle 3 from the tool-taking position 300 to the intermediate position 200, the control system 7 controls the second ventilation system 6 to start blowing air; when the spindle 3 reaches the intermediate position 200, a switch will be made, the control system 7 controls the first ventilation system 5 to start, and the control system 7 controls the second ventilation system 6 to stop blowing air.

[0099] To improve the cleaning effect, in this embodiment, the first ventilation system 5 is started when the spindle 3 reaches a second preset position (the second preset position is located between the tool-taking position 300 and the intermediate position 200) before reaching the intermediate position 200. That is, during the period or displacement of the spindle 3 from the second preset position to the intermediate position 200, the first ventilation system 5 and the second ventilation system 6 are started simultaneously to blow air on the tool 43. After the spindle 3 reaches the intermediate position 200, the control system 7 controls the second ventilation system 6 to stop ventilating, and at this time, the first ventilation system 5 keeps blowing air.

[0100] Further, the intermediate position 200 is located between one-third and two-thirds of the cone top to the cone bottom of the installation cone surface of the tool 43, so as to blow to the cone surface of the tool 43 to a great extent.

[0101] The above is only the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A machine tool, characterized in that: include: The bed body (1) comprises a base (11) and a column (12) arranged on the base; A spindle box (2) is mounted on the column (12) so as to be movable up and down; A spindle (3) is arranged on the spindle box (2); a tool mounting opening (31) is arranged on the spindle (3); and the spindle (3) has a tool mounting position (100), an intermediate position (200) and a tool removal position (300); A tool magazine assembly (4) comprises a tool magazine support (41) arranged at the top of the column (12) and a tool magazine (42) arranged on the tool magazine support (41); a plurality of tools (43) are rotatably arranged on the tool magazine (42); the tool magazine (42) has a tool taking opening (400); each tool (43) can be rotated to the tool taking opening (400); and the spindle (3) clamps the tool (43) at the tool taking opening through the tool loading opening (31); A first ventilation system (5), arranged on the main shaft (3) and connected to the knife-mounting port, for ventilating the knife-mounting port (31); A second ventilation system (6) is arranged on the tool magazine (42), the second ventilation system (6) comprising a ventilation component (61), the air outlet of the ventilation component (61) facing the tool (43) at the cutting edge; A control system (7) is connected to the first ventilation system (5) and the second ventilation system (6), wherein the control system (7) is used to control the first ventilation system (5) to start when the spindle (3) moves from the tool loading position (100) to the intermediate position (200); and the control system (7) is also used to control the second ventilation system (6) to start when the spindle moves from the intermediate position (200) to the tool removal position (300).

2. The machine tool according to claim 1, characterized in that: The back of the tool magazine (42) is provided with a mounting groove (421), and the ventilation assembly (61) includes a ventilation duct; the second ventilation system (6) also includes a first control valve (62) arranged on the ventilation duct, and the ventilation duct is arranged along the tool magazine support (41) into the mounting groove, and the air outlet of the ventilation duct faces the mounting cone surface of the tool (43); the first control valve (62) is connected to the control system (7) and is used to control the opening and closing of the ventilation duct.

3. The machine tool according to claim 2, characterized in that: The ventilation pipeline comprises a diverter valve (611), a first jet pipe (613) and a second jet pipe (614); the first jet pipe (613) and the second jet pipe (614) are both connected to the diverter valve (611); and the air outlets of the first jet pipe (613) and the second jet pipe (614) face different azimuth points of the mounting cone surface.

4. The machine tool according to claim 3, characterized in that: The ventilation assembly (61) further comprises an air pipe frame, wherein the air pipe frame comprises: A support plate (612) is fastened to the mounting groove, and the diverter valve (611) is arranged on the support plate (612); A first supporting structure (615) is arranged on the supporting plate (612), the first supporting structure (615) extends in the direction of the main axis (3), a first supporting hole is arranged on the first supporting structure (615), and the first air injection pipe (613) passes through the first supporting hole; A second supporting structure (616) is arranged on the supporting plate (612); the second supporting structure (616) is spaced apart from the first supporting structure (615) and extends toward the main axis (3); a second supporting hole is arranged on the second supporting structure (616); and the second jet pipe (614) passes through the second supporting hole.

5. The machine tool according to any one of claims 2 to 4, characterized in that: The air outlet of the ventilation assembly (61) faces between one fifth and two thirds of the distance from the top of the cone to the bottom of the cone on the installation cone surface of the tool (43); the middle position (200) is located between one fifth and two thirds of the distance from the top of the cone to the bottom of the cone on the installation cone surface of the tool (43).

6. The machine tool according to any one of claims 1 to 4, characterized in that: The first ventilation system (5) comprises: A vent nozzle (51) is arranged on the main shaft (3), and an air inlet valve port (511) and an air outlet valve port (512) are arranged on the vent nozzle (51); An air passage portion (52) is coaxially arranged on the spindle box (2) with the spindle (3), and an air passage inlet (521) and an air passage outlet (522) are arranged on the air passage portion (52), wherein the air passage inlet (521) is communicated with the air outlet valve port (512); and the air passage outlet (522) is communicated with the knife mounting port (31) of the spindle (3); A second control valve (53) is arranged on an intake passage connected to the intake valve port (511), the second control valve (53) is connected to the control system (7), and the control system (7) is used to control the on and off of the second control valve (53); The machine tool also includes a tool-beating arm (8), one end of which is connected to the column (11), and the other end of which is connected to the air passage portion (52); when the spindle (3) is located between the tool-loading position (100) and the intermediate position (200), the air passage inlet (521) is connected to the air outlet valve port (512).

7. A tool cleaning control method, characterized in that: Applied to the machine tool according to claims 1 to 6, the method comprises the following steps: S100: Based on a tool change command, the spindle (3) located at the working position moves to the tool loading position (100), places the tool (43) on the spindle (3) on the tool taking opening (400) of the tool magazine (42), and moves to the tool taking position (300) through the intermediate position (200); When the spindle (3) moves from the tool loading position (100) to the intermediate position (200), the control system (7) controls the first ventilation system (5) to start supplying air into the tool loading port (31); and when the spindle (3) moves from the intermediate position (200) to the tool removal position (300), the control system (7) controls the second ventilation system (6) to start blowing air toward the tool (43).

8. The tool cleaning control method according to claim 7, characterized in that: After step S100, the method further includes: S200: After the spindle (3) moves to the tool taking position (300), the tool magazine (42) rotates so that the tool (43) to be installed is located at the tool taking opening (400); The tool (43) to be installed is located behind the tool removal opening (400), and the control system (7) controls the second ventilation system (6) to supply air.

9. The tool cleaning control method according to claim 8, characterized in that: After step S200, the method further includes: S300: Based on the tool picking command, the spindle (3) moves to the tool picking position (300), and moves to the tool loading position (100) via the intermediate position (200) to install the tool (43) on the tool magazine (42) onto the spindle (3); When the spindle (3) moves from the tool removal position (300) to the intermediate position (200), the control system (7) controls the second ventilation system (6) to start blowing air toward the tool (43); and when the spindle (3) moves from the intermediate position (200) to the tool loading position (100), the control system (7) controls the first ventilation system (5) to start supplying air into the tool loading port (31).

10. The tool cleaning control method according to claim 9, characterized in that: In step S100, the control system (7) controls the second ventilation system (6) to start before the spindle (3) moves to the intermediate position (200) so as to blow air toward the tool (43); In step S300, the control system (7) controls the first ventilation system (5) to start before the spindle (3) moves to the intermediate position (200) so as to supply air into the knife-mounting port (31); The middle position (200) is located between one third and two thirds of the distance from the top to the bottom of the installation cone of the tool (43).

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