Method and system for controlling spraying device

Abstract

The invention discloses a method and system for controlling a spraying device, and belongs to the technical field of numerical control tool cooling, and the method comprises the steps: obtaining the number information of a tool in use in real time, and obtaining the corresponding tool length according to the number information of the tool; the angle of the nozzle is automatically corrected according to the length of the tool, and cooling liquid can be accurately sprayed to the tool nose. According to the method, the deviation angle can be automatically converted according to the wirelessly received cutter length, and the spraying cooling liquid is controlled to achieve the function of automatically following a cutter nozzle to conduct spraying cooling.

Description

Technical Field

[0001] The present invention relates to the technical field of numerical control tool cooling, and particularly relates to a method and a system for controlling a spraying device. Background Art

[0002] As the "teeth of industry", numerical control tools have accelerated the development and progress of numerical control machining technology with their characteristics of high precision, high efficiency, and high reliability. A good tool has good flexural strength, fracture toughness, and hardness. Only by doing a good job in maintenance during use can the machining efficiency be improved and the service life of the tool be extended.

[0003] The cutting heat generated by tool cutting will significantly reduce the tool life. Wet cutting is a relatively effective treatment method at present. The traditional method relies on the operator to manually adjust the coolant nozzle to align with the tool tip. This method has low efficiency and is difficult to achieve precise cooling. Especially during the automatic tool change process of the tool, there are safety hazards. Summary of the Invention

[0004] The main purpose of the present invention is to provide a control method and a system to achieve automatic tracking and precise spraying of a (coolant) nozzle on a tool (tool tip), and improve the cooling efficiency and machining quality.

[0005] To achieve the above purpose, the present invention provides a method for controlling a spraying device, including the following steps:

[0006] Obtain the number information of the tool in use in real time, and obtain the corresponding tool length according to the number information of the tool;

[0007] Automatically correct the angle of the nozzle according to the tool length to ensure that the coolant can be accurately sprayed to the tool tip position.

[0008] The present invention also proposes a system for controlling a spraying device, including:

[0009] A data acquisition unit: Obtain the number information of the tool in use in real time, and obtain the corresponding tool length according to the number information of the tool;

[0010] A controller unit: Automatically correct the angle of the nozzle according to the tool length to ensure that the coolant can be accurately sprayed to the tool tip position.

[0011] Wherein the spraying device includes:

[0012] A stepping motor, a rotating sleeve connected to the stepping motor, and a housing cover assembled with the rotating sleeve. The housing cover seals the stepping motor in the housing;

[0013] The rotating sleeve is of a cylindrical structure, including sealing grooves opened at both ends on the outer side of the rotating sleeve body, non-connecting central holes opened on both axial sides of the rotating sleeve body, and a central shaft hole for connecting the output shaft of the stepping motor. An outlet hole communicating with the central hole is vertically opened on the side wall of the rotating sleeve body, and the outlet hole is connected to a nozzle for spraying coolant.

[0014] The housing cover includes a front cover end and an integrally formed interface end. The front cover end and the interface end have a space for accommodating the nozzle. A rotating sleeve hole for assembling the rotating sleeve is opened on the front cover end corresponding to the output shaft of the stepping motor. A blind hole for connecting coolant is opened on the interface end. The rotating sleeve hole extends to the interface end and communicates with the blind hole, and the central hole communicates with the blind hole.

[0015] The present invention provides a method and system for controlling a spraying device, which can obtain the number information of the tool in use in real time, and obtain the corresponding tool length according to the number information of the tool; automatically correct the angle of the nozzle according to the tool length to ensure that the coolant can be accurately sprayed to the tip position of the tool. The invention has the following beneficial effects:

[0016] Enhance system flexibility: Adapt to multi-tool automatic tool change processing, and can realize continuous and efficient cooling operations without manual intervention.

[0017] Improve machining quality and efficiency: The CNC cooling system can significantly reduce the temperature in the cutting area, reduce thermal deformation and tool wear, thereby improving machining accuracy and surface finish. At the same time, the lubricating effect of the coolant can also reduce the cutting resistance and increase the cutting speed, thereby improving the machining efficiency.

[0018] Prolong the service life of the machine tool and the tool: Through effective cooling and lubricating effects, the CNC cooling system can reduce the wear of the machine tool and the tool and prolong their service life. This can not only reduce the maintenance and replacement costs of enterprises, but also improve the stability and reliability of the production line.

[0019] Energy conservation and emission reduction: The efficient cooling system can reduce energy consumption and greenhouse gas emissions. By optimizing the recycling and purification treatment of the coolant, the waste and pollution of the cutting fluid can be reduced, and green production and sustainable development can be realized. Brief Description of the Drawings

[0020] Figure 1 is a three-dimensional view of a CNC machine tool tool related to the embodiment scheme of the present invention.

[0021] Figure 2 is a three-dimensional view of the spraying device related to the embodiment scheme of the present invention.

[0022] Figure 3 is an exploded view of the spraying device related to the embodiment scheme of the present invention.

[0023] Figure 4 It is a perspective view of the rotating sleeve related to the solution of the embodiment of the present invention.

[0024] Figure 5 It is an axial sectional view of the rotating sleeve related to the solution of the embodiment of the present invention.

[0025] Figure 6 It is a perspective view of the housing cover related to the solution of the embodiment of the present invention.

[0026] Figure 7 It is a sectional view of the housing cover related to the solution of the embodiment of the present invention.

[0027] Figure 8 It is a flowchart of the method for controlling the spray device related to the solution of the embodiment of the present invention.

[0028] Figure 9 It is a structural diagram of the control spray device system related to the solution of the embodiment of the present invention.

[0029] Reference numerals and names in the attached drawings:

[0030] 11. Headstock; 12. Spindle; 13. Tool; 14. Spray device; 15. Fixing plate I; 16. Fixing plate II; 17. Connecting plate;

[0031] 141. Housing; 142. Waterproof rubber ring I; 143. Stepper motor; 144. Waterproof rubber ring II; 145. Rotating sleeve waterproof rubber ring; 146. Rotating sleeve; 147. Housing cover; 148. Nozzle; 149. Coolant connector;

[0032] 1461. Rotating sleeve body; 1462. Sealing groove; 1463. Flange; 1464. Central hole; 1465. Outlet hole; 1466. Central shaft hole; 1467. Pin hole;

[0033] 1471. Housing cover body;

[0034] 1472. Front cover end; 14721. Rotating sleeve hole;

[0035] 1473. Interface end; 14731. Blind hole;

[0036] 1474. Space.

[0037] The realization, functional features and advantages of the object of the present invention will be further described in conjunction with the embodiments with reference to the accompanying drawings. Detailed implementation manners

[0038] To make the objectives, technical solutions, and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present disclosure. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present disclosure without creative efforts shall fall within the scope of protection of the present disclosure.

[0039] This application proposes a spraying device for a numerical control tool, aiming to solve the technical problems that when switching tools of different models, it is necessary to manually adjust the angle of the nozzle, which poses a safety hazard and affects production efficiency.

[0040] The spindle of the numerical control machine tool tool, as the core component of the numerical control machine tool, is used to support transmission parts and transmit motion and torque. Please refer to Figure 1 , a spindle 12 connecting a tool 13 extends below the spindle box 11, and the spindle 12 realizes actions such as machining cutting, tool switching, and displacement movement through a control system. A spraying device 14 for cooling the tool and extending its service life is provided at a position on the spindle box 11 close to the spindle 12.

[0041] Please refer to Figure 1 and Figure 2 , the spraying device 14 is fixed to the spindle box 11 through a fixing plate I 15. Specifically, the spraying device 14 is fixed to one end of a fixing plate II 16, and the other end of the fixing plate II 16 is connected to the fixing plate I 15 through a connecting disk 17. The fixing plate II 16 can rotate relative to the fixing plate I 15 with the connecting disk 17 as the center to achieve angle adjustment.

[0042] Please continue to refer to Figure 2 , there is an angle between the planes where the two ends of the fixing plate II 16 are located. Preferably, the angle range of this angle is an obtuse angle between 90° and 180°, such as 160°, 150°, 120°, etc. This angle is an obtuse angle, which is convenient for fixing the spraying device 14 and avoiding friction or collision with the spraying device 14 when adjusting the fixing plate II 16. This angle is a fixed angle, and during the machining process, it ensures that the angle between the spraying device 14 and the tool 13 is relatively fixed and does not vibrate or tilt.

[0043] Figure 3An exploded view of the spray device 14 is exemplarily shown. The spray device 14 includes a housing 141, a waterproof rubber ring I 142, a stepper motor 143, a waterproof rubber ring II 144, a rotating sleeve waterproof rubber ring 145, a rotating sleeve 146, a housing cover 147, a nozzle 148, and a coolant connector 149. Specifically, the stepper motor 143 is accommodated in the housing 141. The output shaft of the stepper motor 143 is connected to the rotating sleeve 146. A waterproof rubber ring II 144 is provided at the connection between the stepper motor 143 and the rotating sleeve 146, which serves to seal and prevent water ingress. The rotating sleeve 146 is in rolling connection with the housing cover 147. A rotating sleeve waterproof rubber ring 145 is provided on the outer side of the rotating sleeve 146, which serves to seal and prevent coolant leakage. The housing cover 147 seals the stepper motor 143 inside the housing 141. A waterproof rubber ring I 142 is provided between the housing cover 147 and the housing 141, which also serves to seal. The coolant connector 149 is connected to the housing cover 147 and is used to introduce the coolant 149 into the rotating sleeve 146 and spray it out through the nozzle 148 connected to the rotating sleeve 146 to cool and lower the temperature of the tool.

[0044] Please refer to Figure 4 and Figure 5 , the rotating sleeve 146 has a cylindrical structure. Specifically, sealing grooves 1462 are opened at both ends on the outer side of the rotating sleeve body 1461 and cooperate with the rotating sleeve waterproof rubber ring 145 to achieve sealing and waterproofing. A flange 1463 is provided at the connection between one axial end of the rotating sleeve body 1461 and the output shaft of the stepper motor 143, which cooperates with the waterproof rubber ring II 144 to achieve the sealing of the output shaft of the stepper motor 143.

[0045] Please continue to refer to Figure 4 and Figure 5 , a central hole 1464 is opened on one axial side of the rotating sleeve body 1461 and extends axially along the rotating sleeve body 1461 for a certain distance. An outlet hole 1465 communicating with the central hole 1464 is vertically opened on the side wall of the rotating sleeve body 1461. The outlet hole 1465 is connected to the nozzle 148. The coolant flows in through the central hole 1464, passes through the outlet hole 1465, flows into the nozzle 148, and sprays out onto the tool.

[0046] A central shaft hole 1466 for connecting the output shaft of the stepper motor 143 is opened on the other axial side of the rotating sleeve body 1461. The central shaft hole 1466 extends axially along the rotating sleeve body 1461 for a certain distance. The central hole 1464 and the central shaft hole 1466 are coaxial and not connected. A pin hole 1467 communicating with the central shaft hole 1466 is vertically opened on the side wall of the rotating sleeve body 1461 to achieve the fixed connection between the output shaft of the stepper motor 143 and the rotating sleeve body 1461.

[0047] In the above structure, when a pulse signal is input to the stepper motor 143, the rotor rotates by an angle or advances one step. The output angular displacement or linear displacement is proportional to the number of input pulses. By controlling the current direction, the angle adjustment of the stepper motor 143 can be achieved. The stepper motor 143 drives the rotating sleeve body 1461 to perform rotational motion or reciprocating oscillation. The spray head 148 connected to the rotating sleeve body 1461 performs synchronous motion. The installation angle of the spraying device is set so that the spray head 148 performs a fan-shaped swing in the vertical direction. When switching different types of cutting tools 13, the angle of the spray head 148 can be adjusted by controlling the stepper motor 143, so that the coolant spraying position matches the cutting tool 13, eliminating the need for manual rotation operation.

[0048] The rotating sleeve 146 is assembled to the housing cover 147. The housing cover 147 is an integrally formed structure. Specifically, please refer to Figure 6 and Figure 7 . The housing cover body 1471 includes a front cover end 1472 and an interface end 1473. The front cover end 1472 is used to cover the housing 141, sealing the stepper motor 143 inside the housing 141. A rotating sleeve hole 14721 for assembling the rotating sleeve 146 is provided on the front cover end 1472 corresponding to the output shaft of the stepper motor 143. The rotating sleeve hole 14721 extends to the interface end 1473. As Figure 7 shown, a blind hole 14731 is provided in the vertical direction of the interface end 1473. One end of the blind hole 14731 is connected to the coolant connector 149, and the other end is connected to a plug. The rotating sleeve hole 14721 extends to the interface end 1473 and communicates with the blind hole 14731. The rotating sleeve 146 is assembled into the rotating sleeve hole 14721. As Figure 7 shown by the dotted arrow, the coolant can enter the blind hole 14731 from the coolant connector 149, then flow into the central hole 1464 of the rotating sleeve 146, and finally be sprayed out through the spray head 148 connected to the outlet hole 1465.

[0049] There is a space 1474 for accommodating the spray head 148 between the front cover end 1472 and the interface end 1473. The stepper motor 143 controls the rotation of the rotating sleeve 146, driving the spray head 148 to swing in the space 1474. As Figure 1 shown, the installation position of the spraying device 14 is set so that the spray head 148 can swing in the vertical direction. By controlling the rotation angle of the stepper motor 143 through the control system, the angle adjustment of the spray head 148 is achieved, ensuring that the coolant sprayed from the nozzle of the spray head 148 always matches the cutting tool 13.

[0050] The present application also proposes a method for controlling the spraying device. Based on the above spraying device for a numerical control cutting tool, this method is used to achieve automatic tracking and precise spraying of the (coolant) spray head on the cutting tool (tool tip), improving the cooling efficiency and machining quality (please refer to Figure 8 ).

[0051] S101. Obtain the number information of the tool in use in real time, and obtain the corresponding tool length according to the number information of the tool.

[0052] During the working process of the CNC tool, the number information of the currently used tool can be obtained in real time through the communication interface of the CNC machine tool, so that the spraying device is matched with the tool.

[0053] CNC tools include milling cutters, drill bits, boring cutters, reaming cutters, turning tools and some special tools, etc. Each type of tool has a set of numbering rules, mainly including material codes, tool models and tool specifications. Select the corresponding tool according to the workpiece material. Different tools have different lengths. Therefore, after changing the tool, the spraying device for cooling needs to make an angle adjustment to ensure the cooling effect and extend the service life of the tool. Further, the tip angle has different angles. For example, a large tip angle is used for high feed rates, and a small tip angle is used for finish machining and other situations. For different tools, the spraying amount of the coolant can be adjusted accordingly.

[0054] The tool library records the number information of the tools. When changing the tool, immediately obtain the length data of the replaced tool as the basis for adjusting the angle of the nozzle.

[0055] S102. Automatically correct the angle of the nozzle according to the tool length to ensure that the coolant can be accurately sprayed to the tip position.

[0056] Establish a space coordinate system in combination with the tool position and the positional relationship with the CNC machine tool, determine the optimal spraying angle through calculation or the operation of the operator, and adjust the angle of the nozzle to ensure that the coolant can be accurately sprayed to the tip position to achieve the best cooling effect.

[0057] This application also proposes a system for controlling the spraying device. Based on the above spraying device for CNC tools, configure the system to achieve automatic tracking and precise spraying of the (coolant) nozzle on the tool (tip), improving the cooling efficiency and machining quality.

[0058] Specifically include (see Figure 9 ):

[0059] A group of CNC machine tools, composed of multiple CNC machine tools, and each CNC machine tool is configured with a control system for completing machining operations.

[0060] Data acquisition unit: Obtain the number information of the tool in use in real time, and obtain the corresponding tool length according to the number information of the tool.

[0061] The data acquisition unit can also collect various index parameters of the CNC machine tool group, such as: the current operating state, the current program, and the tool information.

[0062] Controller unit: Automatically corrects the angle of the nozzle according to the tool length to ensure that the coolant can be accurately sprayed onto the tip of the tool.

[0063] The controller unit receives signals from the data acquisition unit and analyzes the signals. Specifically, it analyzes the tool number information in the signals, finds out information such as the material code, tool model, and tool specifications of the tool, obtains the tool length, and calculates the angle between the nozzle and the tip of the tool by establishing a plane model. For example, taking the plane where the spraying device, nozzle, and tool are located as a plane, a plane rectangular coordinate system is established to ensure that the coolant sprayed by the nozzle can effectively reach the tip of the tool. Based on the current angle and the optimal angle, the angle to be corrected is calculated, and according to this angle, the deflection angle of the stepping motor is calculated, and the stepping motor is controlled to complete the deflection, deflecting the nozzle to the preset angle to complete the correction.

[0064] The controller unit can also analyze through logical algorithms. For example, it obtains the tool information in the machining program sheet of a certain part in the ERP system order, obtains the length of the tool, generates the corresponding correction instruction, and transmits the correction instruction to the stepping motor wirelessly or wiredly to achieve automatic correction.

[0065] The system can automatically convert the deviation angle based on the tool length received wirelessly, and control the spraying of the coolant to achieve the automatic following nozzle spraying cooling function.

Claims

1. A method for controlling a spray device, characterized in that: The following steps are involved: Obtain the number information of the tool in use in real time, and obtain the corresponding tool length according to the tool number information; The nozzle angle is automatically adjusted according to the tool length to ensure that the coolant can be accurately sprayed to the tool tip.

2. The method according to claim 1, characterized in that The spraying device comprises: A stepper motor (143), a rotating sleeve (146) connected to the stepper motor (143), and a housing cover (147) assembled with the rotating sleeve (146), wherein the housing cover (147) seals the stepper motor (143) in a housing (141); The rotating sleeve (146) is a cylindrical structure, comprising sealing grooves (1462) opened at both ends of the outer side of the rotating sleeve body (1461), a non-connected central hole (1464) opened on both axial sides of the rotating sleeve body (1461), and a central axis hole (1466) for connecting the output shaft of the stepper motor (143), and an outlet hole (1465) connected to the central hole (1464) is vertically opened on the side wall of the rotating sleeve body (1461), and the outlet hole (1465) is connected to a nozzle (148) for spraying coolant; The shell cover (147) includes a front cover end (1472) and an integrally formed interface end (1473), the front cover end (1472) and the interface end (1473) having a space (1474) for accommodating the nozzle (148), a rotating sleeve hole (14721) for assembling the rotating sleeve (146) is provided on the front cover end (1472) corresponding to the output shaft of the stepper motor (143), the interface end (1473) begins with a blind hole (14731) for connecting a coolant, the rotating sleeve hole (14721) extends to the interface end (1473) and is connected to the blind hole (14731), and the center hole (1464) is connected to the blind hole (14731).

3. A system for controlling a spray device, characterized in that: include: Data acquisition unit: obtain the number information of the tool in use in real time, and obtain the corresponding tool length according to the tool number information; Controller unit: Automatically adjusts the nozzle angle according to the tool length to ensure that the coolant can be accurately sprayed to the tool tip.

4. The system according to claim 3, characterized in that The spraying device comprises: A stepper motor (143), a rotating sleeve (146) connected to the stepper motor (143), and a housing cover (147) assembled with the rotating sleeve (146), wherein the housing cover (147) seals the stepper motor (143) in a housing (141); The rotating sleeve (146) is a cylindrical structure, comprising sealing grooves (1462) opened at both ends of the outer side of the rotating sleeve body (1461), a non-connected central hole (1464) opened on both axial sides of the rotating sleeve body (1461), and a central axis hole (1466) for connecting the output shaft of the stepper motor (143), and an outlet hole (1465) connected to the central hole (1464) is vertically opened on the side wall of the rotating sleeve body (1461), and the outlet hole (1465) is connected to a nozzle (148) for spraying coolant; The shell cover (147) includes a front cover end (1472) and an integrally formed interface end (1473), the front cover end (1472) and the interface end (1473) having a space (1474) for accommodating the nozzle (148), a rotating sleeve hole (14721) for assembling the rotating sleeve (146) is provided on the front cover end (1472) corresponding to the output shaft of the stepper motor (143), the interface end (1473) begins with a blind hole (14731) for connecting a coolant, the rotating sleeve hole (14721) extends to the interface end (1473) and is connected to the blind hole (14731), and the center hole (1464) is connected to the blind hole (14731).

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