Annular nozzle device, machine tool and machining control method

Abstract

The invention relates to the technical field of machining, and provides an annular nozzle device, a machine tool and a machining control method.The device comprises an annular spraying body which comprises an annular main body part and a plurality of nozzles connected to the main body part and arranged around the axis of the main body part; outlets of the nozzles are bent towards the inner side of the ring of the main body part, so that extension lines of the outlets of the multiple nozzles intersect to form a cooling point; and the driving mechanism is connected with the annular spraying body and used for driving the annular spraying body to move in the axis direction. According to the arrangement, the driving mechanism can drive the annular spraying body to move along the axis, so that the spraying position of the nozzle is adjusted in real time according to tools with different lengths in the continuous machining process, it is guaranteed that the machining position has a good cooling state and a good cleaning environment in the whole machining period, the service life of the tools is prolonged, and the workpiece quality is improved.

Description

Technical Field

[0001] This invention relates to the field of machining technology, and in particular to an annular nozzle device, a machine tool, and a machining control method. Background Technology

[0002] In the field of CNC machine tool machining, the proper spraying of cutting fluid is a key process to ensure machining quality and extend tool life. By cooling the machining area at the tool tip and removing the chips generated during the cutting process, cutting fluid can effectively reduce cutting temperature, reduce friction and wear between the tool, workpiece, and chips, and avoid the adverse effects of chip accumulation on machining accuracy, thereby ensuring the stability of workpiece surface quality.

[0003] Currently, machine tools generally have a ring nozzle device fixedly installed at the bottom of the machine head to provide cutting fluid to the machining position. This device can manually adjust the direction of the nozzle to the machining area of ​​the tool tip for a certain length of tool. For tools of different lengths, the nozzle needs to be adjusted to different directions.

[0004] However, in modern machining, in order to improve production efficiency, the production mode of processing multiple processes in one continuous operation has been widely used. In such machining conditions, each process often requires the use of tools of different lengths. Since the adjustment of the nozzle direction depends on manual operation and the adjustment process must be completed when the machine tool is stopped, it is impossible to adjust the nozzle spray direction in real time and automatically according to the change of tool length during continuous machining. This results in the tool tip not being effectively cooled and cleaned by cutting fluid in subsequent processes, which in turn causes problems such as reduced tool life and reduced workpiece quality, seriously restricting the improvement of machining efficiency and machining quality of CNC machine tools in multi-process continuous machining scenarios.

[0005] In view of the above problems, how to ensure good cooling and a clean environment throughout the entire processing cycle in multi-process continuous processing scenarios has become an important technical challenge that urgently needs to be solved. Summary of the Invention

[0006] This invention provides an annular nozzle device, machine tool, and machining control method to address the shortcomings of existing annular nozzle devices that are not suitable for multi-process continuous machining scenarios. It can adjust the nozzle spray position in real time for tools of different lengths during continuous machining, thereby ensuring that the machining position has a good cooling state and clean environment throughout the entire machining cycle, which is beneficial to extending tool life and improving workpiece quality.

[0007] This invention provides an annular nozzle device, comprising: The ring spray body includes an annular main body and a plurality of nozzles connected to the main body and arranged around the axis of the main body; the outlet of the nozzles bends toward the inner side of the ring of the main body, so that the intersection of the extension lines of the outlets of the plurality of nozzles forms a cooling point; A drive mechanism, connected to the annular spray body, is used to drive the annular spray body to move along the axial direction of the main body.

[0008] According to the present invention, a plurality of nozzles are uniformly arranged around the axis of the main body; and / or, The nozzle is hinged to the main body, allowing the nozzle outlet to swing closer to or further away from the axis of the main body.

[0009] According to the present invention, an annular nozzle device is provided in the main body, wherein an annular water distribution chamber is provided; The ring spray body also includes a water inlet pipe, which is fixedly connected to the main body and communicates with the water distribution chamber. All of the nozzles are also communicated with the water distribution chamber.

[0010] According to the present invention, an annular nozzle device is provided, wherein the driving mechanism comprises: Base; A lead screw is rotatably mounted on the base and arranged along the axis of the main body, and a lead screw nut is threaded onto the lead screw. The motor is fixedly connected to the base, and its output shaft is connected to the lead screw drive. A sliding assembly is slidably connected to the base and constrained along the axial direction of the main body; the sliding assembly is fixedly connected to the lead screw nut, and the main body is fixedly connected to the sliding assembly.

[0011] According to an annular nozzle device provided by the present invention, the sliding assembly includes: The sliding plate is fixedly connected to the lead screw nut; The slider has a slide rail extending along the axial direction of the main body on the base, the slider is slidably fitted into the slide rail, and the slide plate is fixedly connected to the slider; The main body is fixedly connected to the slide plate and / or the slider.

[0012] According to an annular nozzle device provided by the present invention, the driving mechanism further includes a limiting structure for limiting the sliding range of the sliding component.

[0013] According to the present invention, an annular nozzle device is provided, wherein the limiting structure includes: Limit switches are connected to the base and two are provided; the two limit switches are arranged at intervals along the axial direction of the main body. A limit stop block is connected to the sliding assembly and located between the two limit switches. The contacts of the limit switches are located on the movement path of the limit stop block. When the limit stop block triggers the limit switch, the limit switch feeds back a stop signal, and the motor stops running based on the stop signal.

[0014] The present invention also provides a machine tool including the annular nozzle device described in any one of the above claims.

[0015] The present invention also provides a machining control method, based on the above-described machine tool, comprising the following steps: Calibration: Before the machining program starts, obtain the length, tool number, and the preset cooling point position corresponding to each tool number; After verification and calibration, each tool number is retrieved and the actual position of the corresponding cooling point is checked to ensure that the actual position of the cooling point corresponds one-to-one with the preset cooling point position. When the machining program starts, the tool number of the current tool is obtained, the drive mechanism is controlled to adjust the cooling point to the preset position, and the machining program is executed. Change the tool, update the tool number, and repeat the machining steps until the machining program ends.

[0016] According to a processing control method provided by the present invention, the calibration step includes: Select a tool as the reference tool, measure and record the length of the reference tool and the location of the corresponding cooling point of the annular nozzle device; Measure the length of each of the other non-special shaped tools, compare them with the reference tool, calculate the position of the cooling point of the annular nozzle device, and record it. Measure and record the location of the cooling point of the annular nozzle device corresponding to the specially shaped cutting tool; According to a machining control method provided by the present invention, the tool changing step includes: When the tool change process is started, the control drive mechanism drives the ring spray body to a preset safe position; After tool change, update the tool number, control the drive mechanism to adjust the cooling point to the preset cooling point position, and then execute the machining program. Repeat this cycle until the machining program ends.

[0017] The annular nozzle device, machine tool, and machining control method provided by this invention apply the aforementioned annular nozzle device to a machine tool. Multiple nozzles arranged around the axis of the main body bend towards the inner side of the ring of the main body, allowing the cutting fluid sprayed from the multiple nozzles to converge on the inner side of the ring to form a cooling point. During continuous machining, the position of the cooling point coincides with the tool tip position (i.e., the machining position), thereby achieving cooling of the machining position and removal of machining debris. Throughout the entire machining cycle, before each automatic tool change program is executed, the driving mechanism drives the annular nozzle body to move up and down to adjust the position of the cooling point, so that the position of the cooling point coincides with the tool tip position in the next process. In this way, even if a tool of different length is changed, the position of the cooling point can still be guaranteed to coincide with the tool tip machining area, allowing the cutting fluid to be directly sprayed onto the machining position to ensure its cooling and cleaning effect.

[0018] Compared to related technologies, the drive mechanism can drive the ring spray body to move along the axis, thereby adjusting the spray position of the nozzle in real time for tools of different lengths during continuous processing. This ensures that the processing position has a good cooling state and clean environment throughout the entire processing cycle, which is beneficial to extending tool life and improving workpiece quality. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in this 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 some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is one of the structural schematic diagrams of the annular nozzle device provided in the embodiments of the present invention.

[0021] Figure 2 This is the second schematic diagram of the annular nozzle device provided in the embodiment of the present invention.

[0022] Figure 3 This is a flowchart illustrating the processing control method provided in an embodiment of the present invention.

[0023] Figure 4 This is a control logic diagram of the processing control method provided in the embodiments of the present invention.

[0024] Figure label: 10. Ring spray body; 11. Main body; 12. Nozzle; 13. Cooling point; 14. Water inlet pipe; 15. Connector; 20. Drive mechanism; 21. Base; 22. Lead screw; 23. Motor; 24. Sliding assembly; 241. Slide plate; 242. Slider; 25. Coupling; 26. Slide rail; 27. Limiting structure; 271. Limit switch; 272. Limiting block. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0026] To better understand the annular nozzle device, machine tool, and machining control method provided in the embodiments of the present invention, its application background is first introduced. During CNC machine tool machining, the direction of the cutting fluid spray should be aimed at the tool tip as much as possible, so as to maintain a good cooling state and a clean machining environment at the machining position.

[0027] Currently, machine tools generally have a ring nozzle device fixedly installed at the bottom of the machine head to provide cutting fluid to the machining position. This device has an adjustable nozzle ring, and the direction of the nozzle can be manually adjusted to the machining position of the tool tip for a certain length of tool. For tools of different lengths, the nozzle needs to be adjusted to different directions.

[0028] However, when faced with a situation where multiple processes are processed in a single operation and different lengths of cutting tools are used in each process, the nozzle direction cannot be manually adjusted to the position of each cutting tool tip during the processing, which seriously affects its cooling and cleaning functions, and thus causes problems such as reduced tool life and reduced workpiece quality.

[0029] In view of the above problems, embodiments of the present invention provide an annular nozzle device, machine tool and machining control method, which can adjust the spray position of the nozzle in real time for tools of different lengths during continuous machining, thereby ensuring that the machining position has a good cooling state and clean environment throughout the entire machining cycle, which is beneficial to extending tool life and improving workpiece quality.

[0030] The following is combined Figures 1 to 4 The annular nozzle device, machine tool, and machining control method of the present invention are described.

[0031] Reference Figure 1 and Figure 2 An annular nozzle device includes an annular nozzle body 10 and a drive mechanism 20. The annular nozzle body 10 includes an annular main body 11 and a plurality of nozzles 12 connected to the main body 11 and arranged around the axis of the main body 11. The outlet of the nozzles 12 bends toward the inner side of the annular body 11, so that the extension lines of the outlets of the plurality of nozzles 12 converge to form a cooling point 13. The drive mechanism 20 is connected to the annular nozzle body 10 and is used to drive the annular nozzle body 10 to move along the axial direction.

[0032] In detail, when the above-mentioned annular nozzle device is applied to a machine tool, multiple nozzles 12 arranged around the axis of the main body 11 bend towards the inner side of the ring of the main body 11, so that the cutting fluid sprayed by the multiple nozzles 12 can converge on the inner side of the ring to form a cooling point 13. During continuous machining, the position of the cooling point 13 coincides with the position of the tool tip (i.e., the machining position), thereby achieving cooling of the machining position and removal of machining waste. During the entire machining cycle, before each automatic tool change program is executed, the drive mechanism 20 drives the annular nozzle body 10 to move up and down to adjust the position of the cooling point 13, so that the position of the cooling point 13 coincides with the position of the tool tip in the next process. In this way, even if a tool of different length is changed, the position of the cooling point 13 can still be guaranteed to coincide with the machining part of the tool tip, so that the cutting fluid can be directly sprayed onto the machining position to ensure its cooling and cleaning effect.

[0033] Compared to related technologies, the drive mechanism 20 can drive the ring spray body 10 to move along the axis, thereby adjusting the spray position of the nozzle 12 in real time for tools of different lengths during continuous processing. This ensures that the processing position has a good cooling state and clean environment throughout the entire processing cycle, which is beneficial to extending tool life and improving workpiece quality.

[0034] It is understandable that the main body 11, which serves as the connecting base for multiple nozzles 12, can be configured as a circular ring structure or a polygonal ring structure. The specific configuration needs to be selected and designed according to actual requirements, such as the spatial adaptability to the machine tool.

[0035] In one example of the present invention, the main body 11 is configured as a circular structure, and a plurality of nozzles 12 are evenly arranged around the axis of the main body 11, so that the cooling effect of the cooling point 13 remains uniform in all directions, thereby improving the surface quality of the machined parts.

[0036] Furthermore, the cooling point 13 formed by the convergence of multiple nozzles 12 is located on the axis of the main body 11, and the nozzles 12 are hinged to the main body 11, so that the outlet of the nozzles 12 can swing close to or away from the axis of the main body 11.

[0037] This configuration allows for adjustment of the nozzle 12's outlet orientation according to different processing requirements, thereby adjusting the position of the cooling point 13. For example, when the angle between the extended outlet line of the nozzle 12 and the axis of the main body 11 increases, the cooling point 13 formed by the convergence of multiple nozzles 12 moves upward (i.e., moves closer to the main body 11). Conversely, when the angle between the extended outlet line of the nozzle 12 and the axis of the main body 11 decreases, the cooling point 13 formed by the convergence of multiple nozzles 12 moves downward (i.e., moves away from the main body 11), thus flexibly adapting to the requirements of different processing scenarios. Furthermore, the nozzle 12 is ball-jointed to the main body 11. Specifically, a ball head seat with a cavity can be connected to the main body 11, and a ball head can be fixedly connected to the end of the nozzle 12 away from the outlet. The ball head seat provides support and constraint for the ball head, allowing the ball head to rotate flexibly, thereby realizing the ball joint between the nozzle 12 and the main body 11. The ball head at the end of the nozzle 12 can be connected to the liquid supply outlet via a hose.

[0038] This configuration further enhances the flexibility of nozzle 12 adjustment. In addition to making the adjustment of the position of cooling point 13 simpler and more convenient, it also allows the cooling point 13 to be located on the axis of the main body 11 or misaligned with the axis of the main body 11 by adjusting the orientation of the nozzle 12 outlet, thereby further improving the adaptability to processing scenarios.

[0039] To simplify the structure, in one example of the present invention, the main body 11 is provided with an annular water distribution cavity; the annular spray body 10 also includes a water inlet pipe 14, which is fixedly connected to the main body 11 and communicates with the water distribution cavity, and multiple nozzles 12 are all communicated with the water distribution cavity.

[0040] With this configuration, the cutting fluid enters the water distribution chamber through the inlet pipe 14 and is distributed to multiple nozzles 12. It is then sprayed out through the multiple nozzles 12 and finally converges at the cooling point 13. The design of the water distribution chamber not only greatly simplifies the pipeline layout and facilitates integration, but also ensures that the flow is balanced and that the cooling effect in all directions is uniform.

[0041] The specific structural form of the drive mechanism 20 will be described below with reference to the accompanying drawings.

[0042] Understandably, in some feasible examples, the drive mechanism 20 may employ any form of linear drive element, including cylinders, hydraulic cylinders, and servo electric cylinders.

[0043] To ensure driving precision and thus achieve accurate adjustment of the cooling point 13 position, in one example of the present invention, the driving mechanism 20 includes a base 21, a lead screw 22, a motor 23, and a sliding assembly 24; wherein, the lead screw 22 is rotatably mounted on the base 21 and arranged along the axial direction of the main body 11, and a lead screw nut is threaded onto the lead screw 22; the motor 23 is fixedly connected to the base 21, and the output shaft of the motor 23 is drively connected to the lead screw 22; the sliding assembly 24 is slidably connected to the base 21 and constrained in the axial direction of the main body 11, the sliding assembly 24 is fixedly connected to the lead screw nut, and the main body 11 is fixedly connected to the sliding assembly 24.

[0044] With this configuration, when the position of the cooling point 13 needs to be adjusted according to the tool length, the motor 23 is started, the motor 23 drives the lead screw 22 to rotate, the lead screw 22 drives the lead screw nut to move, the lead screw nut drives the sliding component 24 to slide along the axis of the main body 11, and the sliding component 24 drives the ring spray body 10 to move, thereby realizing the adjustment of the position of the cooling point 13. Compared with other driving methods, the lead screw 22 drive has the advantages of high adjustment accuracy, smooth operation and reliable structure.

[0045] In detail, the base 21 is used to be mounted on the head of the machine tool and serves as a fixed support base for the entire annular nozzle device. It is configured as a long plate-shaped structure arranged along the axial direction of the main body 11. The motor 23 is fixedly connected to the top of the main body 11 by screws. The top of the lead screw 22 is fixedly connected to the output shaft of the motor 23 by a coupling 25, and the bottom end is rotatably connected to the base 21 by a bearing.

[0046] The sliding assembly 24 includes a sliding plate 241 and a slider 242; the sliding plate 241 is fixedly connected to a lead screw nut; a slide rail 26 extending along the axis of the main body 11 is arranged on the base 21, and the slider 242 is slidably fitted into the slide rail 26 and fixedly connected to the sliding plate 241, thus making the sliding assembly 24 as a whole slidably constrained in the axial direction of the main body 11. When the motor 23 drives the lead screw 22 to rotate, the lead screw nut can drive the sliding plate 241 to move up and down, thereby causing the sliding assembly 24 as a whole to move up and down. The main body 11 is fixedly connected to the sliding plate 241 and / or the slider 242, so that the sliding assembly 24 can drive the ring spray body 10 to move up and down.

[0047] For example, the cross-section of the slide rail 26 can be configured as T-shaped or dovetail-shaped, and the slider 242 can be provided with a matching T-shaped groove or dovetail groove, thus achieving a proper fit between the two. Alternatively, the slide rail 26 can be configured as a long rod structure (e.g., a round rod or a polygonal rod), and the slider 242 can be provided with a through hole for the slide rail 26 to pass through, thus still achieving a proper fit. Of course, there are many other feasible sliding connection methods between the slide rail 26 and the slider 242, which will not be listed one by one in this embodiment of the invention.

[0048] It is understandable that the main body 11 can be fixedly connected to the slide plate 241, or to the slider 242, or to both the slide plate 241 and the slider 242.

[0049] In one example of the present invention, reference is made to Figure 1 The slide rail 26 is arranged on the plate surface of the base 21 facing the ring spray body, and the slider 242 is fixedly connected to the bottom of the slide plate 241; the main body 11 is fixedly connected to the slide plate 241 through the connector 15.

[0050] In detail, the connector 15 is rod-shaped, with one end fixedly connected to the main body 11 and the other end fixedly connected to the slide plate 241. Furthermore, the specific connection methods between the connector 15 and the main body 11 and the slide plate 241 include, but are not limited to, welding or the use of bolts or other connecting components.

[0051] In another example of the present invention, the main body 11 is fixedly connected to the slider 242 via the connector 15. Thus, the main body 11 can still be moved up and down by the sliding assembly 24.

[0052] It is understood that the sliding component 24 can have other connection methods with the base 21 and the main body 11, as long as they can drive the main body 11 to move up and down. These will not be listed one by one in the embodiments of the present invention.

[0053] In one example of the present invention, the drive mechanism 20 further includes a limiting structure 27 for limiting the sliding range of the sliding component 24. This configuration allows the limiting structure 27 to restrict the sliding range of the sliding component 24, thereby limiting the stroke range of the ring-jet body 10, preventing interference with other components on the machine tool, and ensuring machining safety.

[0054] In detail, the limiting structure 27 includes a limit switch 271 and a limit block 272; wherein, the limit switch 271 is connected to the base 21 and there are two of them, and the two limit switches 271 are arranged at intervals in the axial direction of the main body 11; the limit block 272 is connected to the sliding component 24 and is located between the two limit switches 271, and the contact of the limit switch 271 is located on the movement path of the limit block 272, so that when the limit block 272 triggers the limit switch 271, the limit switch 271 feeds back a stop signal, and the motor 23 stops running based on the stop signal.

[0055] With this configuration, the two limit switches 271 define two travel endpoints. When the travel of the sliding component 24 reaches the travel endpoint, the limit block 272 will contact the contact of the limit switch 271, thereby triggering the limit switch 271. The limit switch 271 feeds back a stop signal to the control system. The control system controls the motor 23 to stop running according to the stop signal, thereby ensuring that the sliding component 24 always moves within the allowable safe range, thus limiting the travel range of the ring spray body 10, avoiding interference with other components on the machine tool, and ensuring safety.

[0056] The machine tool provided by the present invention is described below. The machine tool described below can be referred to in correspondence with the annular nozzle device described above.

[0057] A machine tool comprising the annular nozzle device provided in any of the above examples.

[0058] In detail, the annular nozzle device is fixedly connected to the head of the machine tool via the base 21.

[0059] The machining control method provided by the present invention is described below. The machining control method described below can be referred to in correspondence with the annular nozzle device or machine tool described above.

[0060] Reference Figure 1 and Figure 2 A processing control method includes the following steps: Step S1, Calibration: Before starting the machining program, obtain the length, tool number, and the preset cooling point 13 position corresponding to each tool number.

[0061] In detail, before the machining program starts, the position of the cooling point 13 of the annular nozzle device corresponding to all tools needs to be manually calibrated. First, select one tool as the reference tool, measure and record the length of the reference tool and the position of the corresponding cooling point 13 of the annular nozzle device. Then, measure the length of the other tools, compare it with the reference tool, calculate the position of the cooling point 13 of the annular nozzle device and record it. Finally, for tools with special shapes, such as large disc cutters, it is necessary to measure and record the position of the corresponding cooling point 13 of the annular nozzle device separately.

[0062] Step S2, Verification: After calibration, retrieve the tool number one by one and check the actual position of the corresponding cooling point 13 to ensure that the actual position of the cooling point 13 corresponds one-to-one with the preset cooling point 13 position.

[0063] In detail, after calibration, a verification is required to check whether the actual position of cooling point 13 corresponds to the preset position of cooling point 13. If they do not correspond, they need to be corrected one by one. The actual position of cooling point 13 is manually adjusted to the preset position until the actual position of cooling point 13 corresponding to all tool numbers matches the preset position of cooling point 13. Then, it is re-recorded in the CNC system.

[0064] Step S3: Machining. Obtain the tool number of the current tool, control the drive mechanism 20 to adjust the cooling point 13 to the preset position, and execute the machining program.

[0065] In detail, during the machining process, the tool number of the current tool is obtained, and according to the database, the drive mechanism 20 is controlled to drive the ring spray body 10 to move, so that the cooling point 13 is precisely adjusted to the preset cooling point 13 position corresponding to the current tool. Then, the machining is carried out, and the cutting fluid is collected at the cooling point 13 for cooling and to remove the cutting chips.

[0066] Step S4: Change the tool, update the tool number, and repeat step S3 until the machining is finished.

[0067] To elaborate further, the tool changing process includes: Step S40: When the tool changing process is started, the control drive mechanism 20 drives the ring spray body 10 to a preset safe position, thus preventing the tool changing process from interfering with the ring nozzle device.

[0068] Step S41: After the tool change is completed, update the tool number, control the drive mechanism 20 to adjust the cooling point 13 to the preset cooling point 13 position, and then execute the machining program. Repeat this process until the machining is completed.

[0069] It is understood that, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of the different embodiments or examples.

[0070] The annular nozzle device, machine tool, and machining control method provided in this invention allow multiple nozzles 12 arranged around the axis of the main body 11 to bend towards the inner side of the main body 11, so that the cutting fluid sprayed by the multiple nozzles 12 can converge on the inner side of the ring to form a cooling point 13. During continuous machining, the position of the cooling point 13 coincides with the position of the tool tip (i.e., the machining position), thereby achieving cooling of the machining position and removal of machining debris. Throughout the machining cycle, before each automatic tool change program is executed, the drive mechanism 20 drives the annular nozzle body 10 to move up and down to adjust the position of the cooling point 13, so that the position of the cooling point 13 coincides with the position of the tool tip in the next process. In this way, even if a tool of different length is changed, the position of the cooling point 13 can still be guaranteed to coincide with the tool tip machining area, so that the cutting fluid can be directly sprayed onto the machining position to ensure its cooling and cleaning effect.

[0071] Compared to related technologies, the drive mechanism 20 can drive the ring spray body 10 to move along the axis, thereby adjusting the spray position of the nozzle 12 in real time for tools of different lengths during continuous processing. This ensures that the processing position has a good cooling state and clean environment throughout the entire processing cycle, which is beneficial to extending tool life and improving workpiece quality.

[0072] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An annular nozzle device, characterized in that, include: The ring spray body (10) includes an annular main body (11) and a plurality of nozzles (12) connected to the main body (11) and arranged around the axis of the main body (11); the outlet of the nozzles (12) bends toward the inner side of the ring of the main body (11), so that the intersection of the extension lines of the outlets of the plurality of nozzles (12) forms a cooling point (13). A drive mechanism (20) is connected to the ring spray body (10) and is used to drive the ring spray body (10) to move along the axial direction of the main body (11).

2. The annular nozzle device according to claim 1, characterized in that, The plurality of nozzles (12) are evenly arranged around the axis of the main body (11); and / or, The nozzle (12) is hinged to the main body (11), allowing the outlet of the nozzle (12) to swing close to or away from the axis of the main body (11).

3. The annular nozzle device according to claim 2, characterized in that, The main body (11) is provided with an annular water distribution cavity; The ring spray body (10) also includes a water inlet pipe (14), which is fixedly connected to the main body (11) and communicates with the water distribution chamber. The plurality of nozzles (12) are all communicated with the water distribution chamber.

4. The annular nozzle device according to any one of claims 1 to 3, characterized in that, The drive mechanism (20) includes: Base (21); A lead screw (22) is rotatably mounted on the base (21) and arranged along the axis of the main body (11). A lead screw nut is threaded onto the lead screw (22). The motor (23) is fixedly connected to the base (21), and its output shaft is connected to the lead screw (22) for transmission. The sliding component (24) is slidably connected to the base (21) and constrained in the axial direction of the main body (11); the sliding component (24) is fixedly connected to the lead screw nut, and the main body (11) is fixedly connected to the sliding component (24).

5. The annular nozzle device according to claim 4, characterized in that, The sliding component (24) includes: The slide plate (241) is fixedly connected to the lead screw nut; The slider (242) is provided on the base (21) with a slide rail (26) extending along the axis of the main body (11), the slider (242) is slidably fitted into the slide rail (26), and the slide plate (241) is fixedly connected to the slider (242). The main body (11) is fixedly connected to the slide plate (241) and / or the slider (242).

6. The annular nozzle device according to claim 4, characterized in that, The drive mechanism (20) further includes a limiting structure (27) for limiting the sliding range of the sliding component (24).

7. The annular nozzle device according to claim 6, characterized in that, The limiting structure (27) includes: Limit switches (271) are connected to the base (21) and two of them are provided; the two limit switches (271) are arranged at intervals in the axial direction of the main body (11); A limit stop block (272) is connected to the sliding assembly (24) and located between the two limit switches (271). The contacts of the limit switches (271) are located on the movement path of the limit stop block (272). When the limit stop block (272) triggers the limit switch (271), the limit switch (271) feeds back a stop signal, and the motor (23) stops running based on the stop signal.

8. A machine tool, characterized in that, Includes the annular nozzle device as described in any one of claims 1 to 7.

9. A processing control method, characterized in that, Based on the machine tool implementation of claim 8 Includes the following steps: Before the machining program starts, the length, tool number, and the position of the preset cooling point (13) corresponding to each tool are obtained; After verification and calibration, the tool number is retrieved one by one and the actual position of the corresponding cooling point (13) is detected to confirm that the actual position of the cooling point (13) corresponds one-to-one with the preset cooling point (13) position. When the machining program starts, the tool number of the current tool is obtained, the drive mechanism (20) is controlled to adjust the cooling point (13) to the preset position, and the machining program is executed. Change the tool, update the tool number, and repeat the machining steps until the machining program ends.

10. The processing control method according to claim 9, characterized in that, The calibration steps include: Select a tool as the reference tool, measure and record the length of the reference tool and the position of the corresponding annular nozzle device cooling point (13); Measure the length of each of the other non-special shaped tools, compare them with the reference tool, calculate the position of the cooling point (13) of the annular nozzle device, and record it; Measure and record the position of the cooling point (13) of the annular nozzle device corresponding to the special-shaped tool; And / or, The tool changing step includes: When the tool change process is started, the control drive mechanism (20) drives the ring spray body (10) to run to the preset safe position; After the tool change is completed, the tool number is updated, the drive mechanism (20) is controlled to adjust the cooling point (13) to the preset cooling point (13) position, and then the machining program is executed. This cycle continues until the machining program ends.

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