Nozzle shell machining tool, method and system

Abstract

The invention discloses a nozzle shell machining machine tool, method and system, and belongs to the technical field of nozzle shell machining. The invention discloses a nozzle shell machining tool which comprises a three-jaw rotary table, a turning spindle, a three-jaw rotary table cooling device and a machining cooling device. The three-jaw rotary table is arranged at the front end of the lower tool turret, one end of the three-jaw rotary table cooling device is connected with cooling liquid, and the other end of the three-jaw rotary table cooling device is arranged on the periphery of the three-jaw rotary table. One end of the machining cooling device is connected with cooling liquid, and the other end is arranged on the periphery of the lathe spindle. A nozzle shell long rod is clamped in the three-jaw rotary table, and the technical problem that according to an existing method, manual operation is needed, and secondary clamping is needed, so that the product percent of pass is poor is solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of nozzle housing processing, and particularly relates to a nozzle housing processing machine tool, method and system. Background Art

[0002] As a core functional component of an aero-engine fuel system, the manufacturing quality of the nozzle housing directly determines the fuel injection performance of the engine, the working efficiency of the combustion chamber, and the service reliability of the whole machine. In the field of aero-engine manufacturing, the precision machining of the long axis of the nozzle housing is listed as a key process characteristic (KPC) by international aviation quality standards such as AS9100. Its machining accuracy needs to meet strict aviation-grade technical requirements: the outer diameter size tolerance is required to be controlled within ±0.002 mm, the cylindricity error of the key mating surface does not exceed 0.003 mm, and in particular, the geometric tolerances (including coaxiality, roundness, and straightness) related to the fuel injection channel must be strictly controlled within a tolerance band of 0.005 mm (5 μm). To achieve this accuracy level, an online detection system with nanometer-level resolution is required during the machining process, and statistical process control (SPC) is implemented to ensure that the process capability index Cpk ≥ 1.67. At the same time, the surface roughness Ra value of the fuel channel needs to be controlled below 0.2 μm to ensure that the fuel flow characteristics and atomization effect meet the design requirements. These accuracy indicators are directly related to the fuel consumption rate of the engine (which can affect the fuel economy by 2 - 3%) and emission performance, and are one of the core technical difficulties in aero-engine manufacturing. The machining process of this component needs to follow the AS9100 aerospace quality management system standard, and statistical process control (SPC) is implemented to ensure that the process capability index Cpk ≥ 1.33; in terms of the process flow, modern manufacturing adopts the "datum unified" principle (Datum network), and the composite machining of long-axis parts is completed through a five-axis CNC machine tool. The key processes include: 1) Deep hole drilling (Gun drilling) for machining the fuel channel, using an internal coolant carbide drill bit, and the cutting parameters need to be optimized through cutting dynamics simulation; 2) Precision grinding using a CBN grinding wheel, with a surface roughness requirement of Ra below 0.2 μm; 3) Electrochemical machining (ECM) for processing complex internal cavity structures; 4) Laser marking for permanent part traceability; for the assembly fit problem of multi-nozzle components, modern processes adopt model-based definition (MBD) technology, directly integrating 3D product and manufacturing information (3D PMI) into the CAD model. A coordinate measuring machine (CMM) is used for full-size inspection, and the selective assembly process is adopted for the key mating surfaces. The clearance fit is controlled within the range of 0.002 - 0.005 mm through group matching; in recent years, by introducing digital twin technology, the assembly process is simulated in a virtual environment to identify potential interference problems in advance. At the same time, an adaptive machining system is adopted, and the machining parameters are corrected in real-time through online measurement feedback.

[0003] In the actual production and processing of the long-axis parts of the nozzle housing of an aero-engine, although the existing processes have been optimized and improved many times, there are still several technical problems that need to be solved urgently, which are mainly reflected in the following two key aspects: Process limitations in the double-end machining of slender shaft parts: In terms of processing technology, since the part belongs to a typical slender shaft structure (length-diameter ratio L / D > 15), traditional processes require two clamping operations for machining. The first clamping is used to complete the machining of one end face and the outer diameter, and the second clamping is used to machine the other end face on a different machine. This process arrangement has obvious technical defects, such as difficult to ensure the repeat positioning accuracy and prominent clamping damage problems. In terms of the complex influencing factors of machining quality, there are serious problems of built-up edge, uneven cooling, and poor surface integrity. The second clamping of the part is time-consuming and difficult to ensure the qualification rate. Second, affected by the above problems, when machining this process, the operator must constantly monitor the running state of the program. When problems occur, the machining program can only be interrupted manually, which affects the machining efficiency and the machining quality of the parts. Summary of the Invention

[0004] The purpose of the present invention is to provide a nozzle housing processing machine tool, method, and system to solve the technical problem that the existing method requires manual operation and two clamping operations, resulting in poor product qualification rate.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions: The present invention discloses a nozzle housing processing machine tool, including a three-jaw turntable, a lathe spindle, a three-jaw turntable cooling device, and a machining cooling device; the three-jaw turntable is arranged at the front end of the lower turret, one end of the three-jaw turntable cooling device is connected to the coolant, and the other end is arranged on the outer circumference of the three-jaw turntable; one end of the machining cooling device is connected to the coolant, and the other end is arranged on the outer circumference of the lathe spindle; the nozzle housing long rod is clamped in the three-jaw turntable.

[0006] Further, the perpendicular bisector of the three-jaw turntable is arranged parallel to the lathe spindle.

[0007] Further, the three-jaw turntable cooling device includes a first outer cooling pipe and a second outer cooling pipe; one ends of the first outer cooling pipe and the second outer cooling pipe are respectively connected to the coolant, and the other ends are symmetrically arranged on the outer circumference of the three-jaw turntable.

[0008] Further, the materials of the first outer cooling pipe and the second outer cooling pipe are both copper pipes.

[0009] Further, the machining cooling device is a universal pipe; one end of the universal pipe is connected to the coolant, and the other end is arranged on the outer circumference of the lathe spindle.

[0010] Further, the universal pipe is a universal corrugated pipe.

[0011] The present invention also discloses a processing method for the above nozzle housing processing machine tool, including the following steps: After the nozzle housing is processed through the main spindle of the lathe for the original process, the program is called to control the three-jaw turntable to flip, and one end of the long rod of the nozzle housing is clamped on the three-jaw turntable. After positioning, the nozzle housing is continuously processed subsequently; during the processing, the cooling device of the three-jaw turntable and the processing cooling device are turned on to wash the chip accumulation on the rollers on the three-jaw turntable, the iron chips on the nozzle housing and the long rod respectively.

[0012] Further, the program for controlling the flipping of the three-jaw turntable is a sub-program of the turntable.

[0013] Further, the control program steps for calling the program to control the flipping of the three-jaw turntable, clamping one end of the long rod of the nozzle housing on the three-jaw turntable, and then continuously processing the nozzle housing after positioning are as follows: Clamp the long rod of the nozzle housing through the three-jaw turntable, and then call the center rest control instruction to activate the center rest support; Adjust the clamping pressure of the center rest and start the pre-tightening of the center rest; then switch to the finish machining coordinate system, quickly position to the machining starting point; zero the axial coordinate of the tool, set the spindle speed and start the forward rotation to start the cutting process.

[0014] The present invention also discloses a processing system for a nozzle housing processing machine tool for implementing the above processing method, including: Three-jaw turntable control module: used to call the program to control the flipping of the three-jaw turntable and clamp one end of the long rod of the nozzle housing on the three-jaw turntable; Subsequent processing module: used to continuously process the nozzle housing subsequently after positioning; Cooling and flushing module: used to turn on the cooling device of the three-jaw turntable and the processing cooling device during the processing to wash the chip accumulation on the rollers on the three-jaw turntable, the iron chips on the nozzle housing and the long rod respectively.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention discloses a nozzle housing processing machine tool. By setting a three-jaw turntable, a cooling device for the three-jaw turntable and a processing cooling device, a three-jaw turntable is added in terms of hardware. After the original process is completed, the program is called to control the three-jaw turntable to flip and clamp the long rod of the nozzle housing, which can achieve one-time clamping and one-time forming, solve the problem of secondary clamping error of parts, and multiple clamping will cause a decrease in artificial accuracy, and is time-consuming and laborious; at the same time, the added cooling device can directly cool and wash the nozzle housing during the processing, and after completing the last process of the old process, the nozzle housing is flushed again at regular intervals to ensure that there is no residual chip accumulation on the long rod. Adjust the original cooling position and pressure on the milling spindle side, and at the same time, it can avoid the disqualification of parts caused by clamping damage to the long rod of the nozzle housing.

[0016] Furthermore, the setting of the three-jaw turntable cooling device can balance the temperature difference and the flow rate on the nozzle housing. While better removing the built-up edge, it can prevent the part from being ablated.

[0017] Furthermore, this processing setting can reduce the workload in the execution of the original process and achieve the effect of unattended operation. Brief Description of the Drawings

[0018] Figure 1 is the front view of the machine tool for processing the nozzle housing of the present invention; Figure 2 is the side view of the machine tool for processing the nozzle housing of the present invention; Figure 3 is the side view of the main spindle of the machine tool for processing the nozzle housing of the present invention; Wherein: 1 - three-jaw turntable; 2 - main spindle of the machine tool; 3 - universal pipe; 4 - first external cooling pipe; 5 - second external cooling pipe. Detailed Embodiments

[0019] 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 with reference to 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.

[0020] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily need to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present invention described herein can be implemented in an order different from those illustrated or described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0021] The present invention discloses a machine tool for processing a nozzle housing. By setting the machine tool accessory three-jaw turntable 1, the problems of rod length, rod hardness, and errors caused by secondary clamping are solved. An embedded program is written. After the previous process is completed, the three-jaw turntable 1 flips to grasp the long rod of the nozzle housing for positioning and then processes again. At the same time, a three-jaw turntable cooling device and a processing cooling device are added to adjust the clamping force to solve the problem of surface clamping damage of the part. Now this function has been maturely used, and the scrap rate has been reduced to zero. At the same time, the workload in the execution of the original process is reduced.

[0022] Using the nozzle housing processing machine tool disclosed by the present invention for processing, one-time clamping and integral forming are realized, which saves time and effort, causes no clamping damage to the long rod part, improves the processing efficiency, reduces the labor intensity, and significantly improves the product quality, having positive significance for industry promotion.

[0023] The following further describes the present invention in detail with reference to the drawings: Refer to Figures 1 to 3 , a nozzle housing processing machine tool disclosed by the present invention includes a three-jaw turntable 1, a lathe spindle 2, a three-jaw turntable cooling device and a processing cooling device; wherein, the three-jaw turntable 1 is added to the front end of the lower turret; a three-jaw turntable cooling device is arranged on the three-jaw turntable 1; a processing cooling device is arranged on the lathe spindle 2.

[0024] Preferably, the three-jaw turntable cooling device is a first external cooling pipe 4 and a second external cooling pipe 5, and the cooling path is the rollers on both sides of the three-jaw turntable 1 for flushing the chips accumulated on the three-jaw turntable 1.

[0025] Preferably, the processing cooling device is a universal pipe 3, which is arranged on the side of the lathe spindle 2 to directly cool and flush the nozzle housing during the processing. After completing the last process of the old process, the nozzle housing is flushed again at regular intervals to ensure that there is no residual chip on the long rod, and the original cooling position and pressure are adjusted on the milling spindle side.

[0026] Preferably, the universal pipe 3 is a universal corrugated pipe.

[0027] Preferably, the materials of the first external cooling pipe 4 and the second external cooling pipe 5 are both copper pipes.

[0028] The present invention also discloses a processing method of the above-mentioned nozzle housing processing machine tool, including the following steps: Step 1: Add a three-jaw turntable 1 to the front end of the lower turret, complete the precision debugging, complete the program writing, and optimize the process; Step 2: Add a universal corrugated pipe to the side of the lathe spindle 2 to directly cool and flush the nozzle housing during the processing. After completing the last process of the old process, the nozzle housing is flushed again at regular intervals to ensure that there is no residual chip on the long rod, and the original cooling position and pressure are adjusted on the milling spindle side; Step 3: Add a first external cooling copper pipe and a second external cooling copper pipe to the three-jaw turntable 1, and the cooling path is the rollers on both sides of the three-jaw turntable 1 for flushing the chips accumulated on the three-jaw turntable 1; Step 4: After the nozzle housing is processed through the main spindle 2 in the original process, call the turntable subroutine to control the three-jaw turntable 1 to flip, clamp one end of the long rod of the nozzle housing on the three-jaw turntable 1, and then perform subsequent continuous processing on the nozzle housing after positioning; during the processing, turn on the cooling device of the three-jaw turntable and the processing cooling device to wash the chip accumulation on the rollers of the three-jaw turntable 1, the iron chips on the nozzle housing and the long rod respectively.

[0029] Preferably, the core part of the process programming of the three-jaw turntable 1 in the present invention is as follows: a) Clamp the workpiece through the three-jaw turntable and call the steady rest control command T = "STEADY_REST"; D01; activate the steady rest support; b) Dynamically adjust the clamping pressure of the steady rest using the R parameter, and execute the command M1 = R71; where R71 is the pressure coefficient calculated in real time according to the length-diameter ratio of the workpiece; c) Start the pre-tightening of the steady rest through the M27 command, and cooperate with the G4F1 delay to ensure stable clamping; d) Call TSP1 to switch to the finish machining coordinate system, and execute G0 G90 Z18 to quickly position to the machining starting point; e) In the G09 precise positioning mode, zero the axial coordinate of the tool (X0), and synchronously trigger the M28 command to lock the axial position of the steady rest; f) Set the spindle speed to S400 and start the forward rotation (M04) to start the cutting process.

[0030] The specific program is as follows: STEADYREST T = "STEADY_REST"; D01; M1 = R71; M27; G4F1; TSP1; G0 G90 Z18; G09 X0; M1 = R71; M28; G4F2; S400M04; Preferably, the value of R71 satisfies: R71 = K×(L / D)+C; Where K is the material coefficient, L / D is the length-diameter ratio of the workpiece, and C is the machine tool rigidity compensation constant.

[0031] Preferably, the triggering timing of the M28 command is related to the spindle speed, and the axial locking is executed when the actual spindle speed reaches 90% of the set value (S400).

[0032] Preferably, the steady rest is of the hydraulic active damping type, and its pressure feedback signal is used to adjust the parameter value of M1 = R71 in real time through the PLC.

[0033] Embodiment 1 A nozzle housing processing machine tool includes a three-jaw turntable 1, a main spindle 2, a three-jaw turntable cooling device, and a processing cooling device; the three-jaw turntable 1 is arranged at the front end of the lower turret, one end of the three-jaw turntable cooling device is connected to the coolant, and the other end is arranged on the outer periphery of the three-jaw turntable 1 for flushing the roller chip accumulation on the three-jaw turntable; one end of the processing cooling device is connected to the coolant, and the other end is arranged on the outer periphery of the main spindle 2; a nozzle housing long rod is clamped in the three-jaw turntable 1 for flushing the iron chips on the nozzle housing and the long rod.

[0034] Embodiment 2 A nozzle housing processing machine tool includes a three-jaw turntable 1, a main spindle 2, a three-jaw turntable cooling device, and a processing cooling device; the three-jaw turntable 1 is arranged at the front end of the lower turret, one end of the three-jaw turntable cooling device is connected to the coolant, and the other end is arranged on the outer periphery of the three-jaw turntable 1; one end of the processing cooling device is connected to the coolant, and the other end is arranged on the outer periphery of the main spindle 2; a nozzle housing long rod is clamped in the three-jaw turntable 1; the perpendicular bisector of the three-jaw turntable 1 is arranged parallel to the main spindle 2; ensuring that the coaxiality of the long rod workpiece during processing is ≤ 0.01 mm, avoiding bending deformation caused by eccentric force, and the double fixation of the two can reduce the processing vibration (compared with the traditional single-end clamping).

[0035] Embodiment 3 A nozzle housing processing machine tool includes a three-jaw turntable 1, a main spindle 2, a three-jaw turntable cooling device, and a processing cooling device; the three-jaw turntable 1 is arranged at the front end of the lower turret, one end of the three-jaw turntable cooling device is connected to the coolant, and the other end is arranged on the outer periphery of the three-jaw turntable 1; one end of the processing cooling device is connected to the coolant, and the other end is arranged on the outer periphery of the main spindle 2; a nozzle housing long rod is clamped in the three-jaw turntable 1; the perpendicular bisector of the three-jaw turntable 1 is arranged parallel to the main spindle 2; the turntable cooling device includes a first outer cooling pipe 4 and a second outer cooling pipe 5; one ends of the first outer cooling pipe 4 and the second outer cooling pipe 5 are respectively connected to the coolant, and the other ends are symmetrically arranged on the outer periphery of the three-jaw turntable 1; the cooling device is a universal pipe 3; one end of the universal pipe 3 is connected to the coolant, and the other end is arranged on the outer periphery of the main spindle 2.

[0036] Embodiment 4 A nozzle housing processing machine tool, comprising a three-jaw turntable 1, a main spindle 2 of the lathe, a cooling device for the three-jaw turntable and a processing cooling device; the three-jaw turntable 1 is arranged at the front end of the lower turret, one end of the cooling device for the three-jaw turntable is connected to the coolant, and the other end is arranged on the outer periphery of the three-jaw turntable 1; one end of the processing cooling device is connected to the coolant, and the other end is arranged on the outer periphery of the main spindle 2 of the lathe; a nozzle housing long rod is clamped in the three-jaw turntable 1; the perpendicular bisector of the three-jaw turntable 1 is arranged parallel to the main spindle 2 of the lathe; the turntable cooling device includes a first outer cooling pipe 4 and a second outer cooling pipe 5; one ends of the first outer cooling pipe 4 and the second outer cooling pipe 5 are respectively connected to the coolant, and the other ends are symmetrically arranged on the outer periphery of the three-jaw turntable 1; the cooling device is a universal pipe 3; one end of the universal pipe 3 is connected to the coolant, and the other end is arranged on the outer periphery of the main spindle 2 of the lathe; the materials of the first outer cooling pipe 4 and the second outer cooling pipe 5 are both copper pipes.

[0037] Embodiment 5 A nozzle housing processing machine tool, comprising a three-jaw turntable 1, a main spindle 2 of the lathe, a cooling device for the three-jaw turntable and a processing cooling device; the three-jaw turntable 1 is arranged at the front end of the lower turret, one end of the cooling device for the three-jaw turntable is connected to the coolant, and the other end is arranged on the outer periphery of the three-jaw turntable 1; one end of the processing cooling device is connected to the coolant, and the other end is arranged on the outer periphery of the main spindle 2 of the lathe; a nozzle housing long rod is clamped in the three-jaw turntable 1; the perpendicular bisector of the three-jaw turntable 1 is arranged parallel to the main spindle 2 of the lathe; the turntable cooling device includes a first outer cooling pipe 4 and a second outer cooling pipe 5; one ends of the first outer cooling pipe 4 and the second outer cooling pipe 5 are respectively connected to the coolant, and the other ends are symmetrically arranged on the outer periphery of the three-jaw turntable 1; the cooling device is a universal pipe 3; one end of the universal pipe 3 is connected to the coolant, and the other end is arranged on the outer periphery of the main spindle 2 of the lathe; the materials of the first outer cooling pipe 4 and the second outer cooling pipe 5 are both copper pipes; the universal pipe 3 is a universal corrugated pipe.

[0038] The working principle of the present invention is: During use, the nozzle housing long rod is clamped by the three-jaw turntable 1, the long rod is flushed through the universal corrugated pipe on the side of the main spindle 2 of the lathe, the accumulated chips of the three-jaw rollers are flushed through the first outer cooling copper pipe and the second outer cooling copper pipe added behind the three-jaw turntable 1, the common cooling of the universal corrugated pipe, the first outer cooling copper pipe and the second outer cooling copper pipe during processing prevents the workpiece from being ablated, and through the mutual cooperation of the three-jaw turntable 1, the main spindle 2 of the lathe, the universal corrugated pipe, the first outer cooling copper pipe and the second outer cooling copper pipe, one-time forming of a single machine is achieved, saving time and effort, there is no extrusion damage to the long rod part, multiple clamping is avoided, the processing efficiency and processing accuracy have been qualitatively improved, and finally the effect of unattended processing with high precision and high efficiency can be achieved, which has positive significance for industry promotion.

[0039] The nozzle housing processing machine tool disclosed by the present invention, through the combined cooperation of the three-jaw turntable 1 and the lathe spindle 2, ensures that the coaxiality of long rod-shaped workpieces during processing is ≤0.01 mm, avoids bending deformation caused by eccentric force, and the dual fixation of the two can reduce the processing vibration (compared with traditional single-end clamping). In addition, the setting of the three-jaw turntable cooling device and the processing cooling device can quickly remove the cutting heat in the roller area of the three-jaw turntable 1, prevent the clamping accuracy from decreasing due to thermal expansion, the double-tube symmetric flushing can improve the chip removal efficiency of the rollers, and the setting of the universal corrugated pipe cooling can flexibly adjust the coolant injection angle, accurately cover the processing area of the lathe spindle, reduce the cutting temperature, and extend the tool life.

[0040] During processing, due to the need for multiple disassembly and assembly of workpieces in the traditional process, the cumulative error reaches 0.05 mm. The present invention directly switches the working position by flipping the three-jaw turntable 1, reducing the repeated positioning error; using the standardized flipping action of the turntable subroutine to reduce the manual intervention time and improve the consistency of the processing rhythm.

[0041] The above content is only to illustrate the technical idea of the present invention, and the protection scope of the present invention cannot be limited thereby. Any changes made on the basis of the technical solution according to the technical idea proposed by the present invention shall fall within the protection scope of the claims of the present invention.

Claims

1. A nozzle housing processing machine tool, characterized in that, It includes a three-jaw turntable (1), a main spindle of the lathe (2), a cooling device for the three-jaw turntable, and a machining cooling device; The three-jaw turntable (1) is arranged at the front end of the lower turret. One end of the cooling device for the three-jaw turntable is connected to the coolant, and the other end is arranged on the outer periphery of the three-jaw turntable (1); one end of the machining cooling device is connected to the coolant, and the other end is arranged on the outer periphery of the main spindle of the lathe (2); a nozzle housing long rod is clamped in the three-jaw turntable (1).

2. The nozzle housing processing machine tool according to claim 1, characterized in that, The perpendicular bisector of the three-jaw turntable (1) is arranged parallel to the main spindle of the lathe (2).

3. The nozzle housing processing machine tool according to claim 1, characterized in that, The cooling device for the three-jaw turntable includes a first outer cooling pipe (4) and a second outer cooling pipe (5); one ends of the first outer cooling pipe (4) and the second outer cooling pipe (5) are respectively connected to the coolant, and the other ends are symmetrically arranged on the outer periphery of the three-jaw turntable (1).

4. The nozzle housing processing machine tool according to claim 3, characterized in that, The materials of the first outer cooling pipe (4) and the second outer cooling pipe (5) are both copper pipes.

5. A nozzle housing processing machine tool according to claim 1, characterized in that, The machining cooling device is a universal pipe (3); one end of the universal pipe (3) is connected to the coolant, and the other end is arranged on the outer periphery of the main spindle of the lathe (2).

6. The nozzle housing processing machine tool according to claim 5, characterized in that, The universal pipe (3) is a universal corrugated pipe.

7. The processing method of a nozzle housing processing machine tool according to any one of claims 1 to 6, characterized in that, It includes the following steps: After the nozzle housing is processed by the main spindle of the lathe (2) in the original process, the program is called to control the three-jaw turntable (1) to flip, clamp one end of the nozzle housing long rod on the three-jaw turntable (1), and then perform subsequent continuous machining on the nozzle housing after positioning; during the machining process, the cooling device for the three-jaw turntable and the machining cooling device are turned on to flush the chip accumulation on the rollers on the three-jaw turntable (1), the iron chips on the nozzle housing and the long rod respectively.

8. The processing method of a nozzle housing processing machine tool according to claim 7, characterized in that, The program for controlling the three-jaw turntable (1) to flip is a sub-program of the turntable.

9. The processing method of a nozzle housing processing machine tool according to claim 7, characterized in that, The control program steps for calling the program to control the three-jaw turntable (1) to flip, clamp one end of the nozzle housing long rod on the three-jaw turntable (1), and then perform subsequent continuous machining on the nozzle housing after positioning are as follows: Clamp the nozzle housing long rod through the three-jaw turntable (1), and then call the center rest control instruction to activate the center rest support; Adjust the clamping pressure of the center rest and start the center rest pre-tightening; then switch to the finish machining coordinate system, quickly position to the machining starting point; zero the axial coordinate of the tool, set the spindle speed and start the forward rotation, and start the cutting machining.

10. A processing system for a nozzle housing processing machine tool, characterized in that, For implementing the machining method described in any one of claims 7 to 9, it includes: A three-jaw turntable control module: used to call the program to control the three-jaw turntable (1) to flip and clamp one end of the nozzle housing long rod on the three-jaw turntable (1); A subsequent machining module: used to perform subsequent continuous machining on the nozzle housing after positioning; A cooling and flushing module: used to turn on the cooling device for the three-jaw turntable and the machining cooling device during the machining process to flush the chip accumulation on the rollers on the three-jaw turntable (1), the iron chips on the nozzle housing and the long rod respectively.

Images