A new energy automobile damping shaft rod processing thread turning equipment and processing technology

Abstract

The application relates to the technical field of thread turning, and discloses a thread turning equipment and machining process for machining a shock absorber shaft of a new energy vehicle, which comprises a rack and a longitudinal guide rail sliding base assembled at the upper end of the rack, both ends of the longitudinal guide rail sliding base are respectively provided with guide sliding bases and right clamping main shaft boxes, the longitudinal guide rail sliding base is slidably matched with the left clamping main shaft box through the guide sliding bases, and the left clamping main shaft box and the right clamping main shaft box are coaxially arranged opposite to each other to jointly clamp a workpiece of the shock absorber shaft of the new energy vehicle. The thread turning equipment and machining process for machining the shock absorber shaft of the new energy vehicle are characterized in that the whole thread turning tool holder slides longitudinally along the guide rail base of the longitudinal guide rail sliding base, the tool holder is moved to a target machining interval according to the axial position of a thread section to be machined of the shock absorber shaft, the longitudinal displacement is locked after the whole tool holder is moved to the target machining interval, the rotation base can be slightly rotated for fine adjustment, the upper end horizontal feeding sliding table is driven to deflect around the center of the base, and the cutting angle of threads with different thread angle is adapted.

Description

Technical Field

[0001] This invention relates to the field of thread turning technology, specifically to a thread turning equipment and processing technology for processing shock absorber shafts in new energy vehicles. Background Technology

[0002] As a core load-bearing component of the suspension system, the shock absorber axle of new energy vehicles requires high-precision turning of its external thread. Traditional thread lathes have several drawbacks when machining such slender axles:

[0003] Conventional lathes use a single-sided chuck to hold the workpiece. When machining slender, damping shafts, the cutting force can easily cause them to bend and deform, making it difficult to guarantee the accuracy of the thread pitch and the consistency of the outer diameter. Some double-center machines have a fixed clamping structure and cannot be adapted to the production of damping shafts of various lengths.

[0004] Traditional cooling structures mostly use single-channel spray cutting fluid, which only cools the cutting point of the tool head. Metal chips generated during machining accumulate on the tool holder base and guide rail surface. The chips, carrying cutting fluid, accumulate and can easily scratch the longitudinal guide rail sliding pair, shortening the service life of the equipment guide rail. The chips mixed in the cutting fluid cannot be quickly concentrated and guided, and the subsequent waste liquid and waste residue separation and cleaning process is cumbersome.

[0005] Conventional turning tool holders are mostly fixed, and the cooling spray flow rate is fixed. The corresponding coolant volume cannot be matched for different working conditions such as roughing and finishing thread turning. When the cutting heat is high during roughing, insufficient cooling can easily lead to tool tip chipping and workpiece thread annealing. Excessive coolant during finishing results in waste liquid and oil splashing in the machining environment.

[0006] Scattered chips flow freely with the cutting fluid to various parts of the machine tool, the machine tool base accumulates serious scale, and the machine frame is corroded over a long period of time. Manual cleaning of waste is time-consuming and labor-intensive, which restricts the production efficiency of batch continuous turning of the vibration damping shaft. Summary of the Invention

[0007] The purpose of this invention is to provide a thread turning equipment and processing technology for processing shock absorber shafts in new energy vehicles, in order to solve the problems mentioned in the background art, such as the workpiece being clamped by a single-sided chuck on a conventional lathe, the slender shock absorber shafts being prone to bending deformation under cutting force during processing, the difficulty in ensuring the accuracy of thread pitch and the consistency of outer diameter, and the fixed stroke of the clamping structure of some double-center equipment, which cannot be adapted to the processing of shock absorber shafts of various lengths.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a thread turning equipment and processing technology for processing shock absorber shafts of new energy vehicles, comprising: a frame and a longitudinal guide rail slide mounted on the upper end of the frame, wherein guide rail slides and a right clamping spindle box are respectively provided at both ends of the longitudinal guide rail slides, the longitudinal guide rail slides are slidably adapted to the left clamping spindle box through the guide rail slides, and the left clamping spindle box and the right clamping spindle box are arranged coaxially opposite to each other to jointly clamp the shock absorber shaft workpiece of new energy vehicles;

[0009] A thread-cutting tool holder is slidably mounted within the travel range of the longitudinal guide rail slide. The thread-cutting tool holder includes a cooling assembly, a cutting tool assembly, a transverse feed slide, a rotary base, and a chip collection base. The bottom of the rotary base is fixedly connected to the chip collection base, and the transverse feed slide is driven to the upper end of the rotary base. The cooling assembly and the cutting tool assembly are fixedly mounted on the upper side of the transverse feed slide. The thread-cutting tool holder slides longitudinally along the guide rail base of the longitudinal guide rail slide. Based on the axial position of the thread section to be processed on the damping shaft, the tool holder is moved to the target processing range and then the longitudinal displacement is locked. The rotary base can be rotated at a small angle for fine adjustment, causing the upper transverse feed slide to deflect around the center of the base, adapting to the cutting angle of different thread angle profiles.

[0010] Furthermore, the longitudinal guide rail slide includes a guide rail base, a guide rail limiting seat, and a filtrate collection tank disposed inside the guide rail base. The filtrate collection tank is a sunken tank structure with its bottom surface inclined to one end. A waste liquid outlet is provided on the side wall of the filtrate collection tank for centralized storage and discharge of cutting fluid containing waste residue. The base mounting plate of the chip collection base receives all falling chips and cutting waste fluid. Multiple sets of adsorption guide cylinders arranged around the central positioning boss are embedded in the base mounting holes through positioning end rings. The cylinder guide holes arranged in the cylinder array rely on the negative pressure of the cutting fluid flow to adsorb the fine chips and waste fluid accumulated on the surface of the base.

[0011] Furthermore, the right clamping spindle box includes a spindle box body, a spindle rotary seat, and a workpiece chuck jaw disposed at the end of the spindle rotary seat. The guide slide seat and the guide rail limiting seat are in sliding limiting cooperation. The left clamping spindle box moves axially along the guide slide seat. The clamping end of the left clamping spindle box is coaxially cooperated with the workpiece chuck jaw for centering and clamping both ends of the shock-absorbing shaft. After the equipment is powered on, the right clamping spindle box remains in a fixed position. The spindle rotary seat inside it drives the workpiece chuck jaw to be in an open state, sending one end of the new energy vehicle shock-absorbing shaft to be processed into the workpiece chuck jaw. The workpiece chuck jaw tightens to achieve centering and clamping of the right end of the shaft.

[0012] Furthermore, the cooling assembly includes a reservoir, a cutting fluid control valve, and cooling pipes connecting to the reservoir. The outlet of the cooling pipes faces the cutting position of the cutting tool assembly. The cooling pipes are divided into two paths: one path's outlet is aligned with the thread cutting engagement position between the thread cutting tool head and the shock-absorbing shaft workpiece; the other path faces the upper surface of the chip collection base, used to rinse cutting chips and, in conjunction with the chip collection base, to complete the slag flushing and collection. Before machining starts, the reservoir contains pre-mixed cutting fluid. The operator manually adjusts the opening of the cutting fluid control valve according to the roughing and finishing conditions to precisely control the total output flow of the cooling pipes. The cooling system has two outlets: the first outlet is precisely aligned with the cutting engagement point between the thread cutting tool and the workpiece shaft, and the cutting fluid continuously washes the cutting point, quickly removing the cutting heat generated during thread turning and preventing high-temperature wear of the tool and high-temperature annealing deformation of the workpiece thread surface; the second outlet is directed towards the upper surface of the chip collection base, spraying the metal chips that fall onto the base in a directional manner. The cutting fluid's force carries the chips towards the adsorption guide tube on the base, and as the workpiece rotates and the tool holder moves at a uniform speed longitudinally, the thread cutting tool turns the external thread along the outer wall of the shaft. All the metal chips generated during machining fall into the chip collection base area under the flushing of the second cutting fluid.

[0013] Furthermore, the cutting fluid control valve is connected to the cooling pipeline, and the cutting fluid control valve is a flow-adjustable valve used to adjust the flow rate of the cutting fluid sprayed from the cooling pipeline according to the thread cutting machining conditions.

[0014] Furthermore, the turning tool assembly includes a tool body mounting base, a tool plate base, and a thread cutting head. The thread cutting head is fixed to the front end of the tool plate base, and the tool plate base is locked and fixed to the transverse feed slide by the tool body mounting base. The thread cutting head is made of cemented carbide. The transverse feed slide performs radial feed motion, driving the thread cutting head of the turning tool assembly to approach the outer circle of the damping shaft, precisely adjusting the depth of cut. The turning tool assembly is locked to the transverse feed slide by the tool body mounting base, and the cemented carbide thread cutting head can be quickly disassembled and replaced to adapt to the tool changing needs of different pitch thread machining.

[0015] Furthermore, the chip collection base includes a base mounting plate, a central positioning boss, and multiple sets of adsorption guide tubes. The base mounting plate is fixedly connected to the lower end of the rotating base, and the central positioning boss is located at the center of the base mounting plate.

[0016] Furthermore, multiple sets of the adsorption guide tubes are arranged around the central positioning boss, and the bottom end of the adsorption guide tube extends to the top of the filtrate collection tank, which is used to guide cutting debris and slag-laden cutting fluid into the filtrate collection tank.

[0017] Furthermore, the adsorption guide tube includes a positioning end ring, a tube body guide hole, an adsorption inner cavity, and a threaded bottom ring. The positioning end ring is embedded and fixed in the assembly hole of the base mounting plate, and the tube body guide hole is arrayed along the wall of the adsorption inner cavity.

[0018] Furthermore, a processing technology for a shock absorber shaft in a new energy vehicle consists of the following steps:

[0019] S1. Workpiece clamping: The operator feeds the pre-treated and qualified shock-absorbing shaft into the equipment. The right end is engaged with the workpiece chuck jaw of the right clamping spindle box. The left end of the clamping shaft of the left clamping spindle box is moved to complete the double-end centering clamping. The thread turning tool holder slides longitudinally along the guide rail base of the longitudinal guide rail slide. According to the axial position of the thread section to be processed on the shock-absorbing shaft, the tool holder is moved to the target processing area and then the longitudinal displacement is locked. The left clamping spindle box moves axially along the guide rail limit seat of the longitudinal guide rail slide, relying on the guide rail. The clamping end of the left clamping spindle box coaxially presses against the left end face of the shock-absorbing shaft, forming a double-end coaxial centering clamping structure with the right workpiece chuck jaw. The locking mechanism of the left clamping spindle box is locked to complete the clamping and fixing of shock-absorbing shafts of different lengths. The built-in drive unit of the right clamping spindle box drives the spindle rotary seat to rotate at a constant speed. The workpiece chuck jaw drives the shock-absorbing shaft to rotate synchronously with the spindle, providing workpiece rotation power for subsequent thread turning.

[0020] S2. Tool Post Adjustment: The rotary base can be rotated and finely adjusted at a small angle, driving the upper transverse feed slide to deflect around the center of the base, adapting to the cutting angle of different thread angles. The transverse feed slide makes radial feed motion, driving the thread cutting head of the turning tool assembly to approach the outer circle of the shock-absorbing shaft. The turning tool assembly is locked on the transverse feed slide through the tool body mounting seat. The carbide thread cutting head can be quickly disassembled and replaced to meet the tool changing needs of different pitch thread machining.

[0021] S3. Flow control: The reservoir stores the pre-mixed cutting fluid. According to the roughing and finishing conditions, the operator manually adjusts the opening of the cutting fluid control valve to precisely control the total output flow of the cooling pipe. The first outlet is precisely aligned with the cutting engagement point between the thread cutting tool and the workpiece shaft. The cutting fluid continuously flushes the cutting point, quickly removing the cutting heat generated by thread turning and preventing high-temperature wear of the tool and high-temperature annealing deformation of the workpiece thread surface. The second outlet is directed towards the upper surface of the chip collection base, spraying the metal chips that fall onto the base in a directional manner. The cutting fluid's force carries the chips towards the adsorption guide tube on the base.

[0022] S4. Waste Collection: The base mounting plate of the chip collection base receives all falling chips and cutting fluid. Multiple sets of adsorption guide cylinders, arranged around the central positioning boss, are embedded in the mounting holes of the base through positioning end rings. The cylinder body guide holes, arranged in an array, rely on the negative pressure of the cutting fluid flow to adsorb the fine chips and waste fluid accumulated on the surface of the base. The chips and mixed waste fluid are guided downward through the adsorption inner cavity of the adsorption guide cylinders and discharged from the bottom end of the threaded bottom ring, falling directly into the sinking filtrate collection tank of the lower longitudinal guide rail slide. The bottom surface of the filtrate collection tank is unidirectionally inclined. The cutting fluid mixed with the waste slag collects along the inclined bottom of the tank towards the waste fluid discharge outlet. Subsequently, the waste fluid in the tank can be centrally discharged from the outlet, realizing unified recycling of waste slag and cutting fluid, and avoiding the scattering of waste fluid and chips to contaminate the guide rails and frame.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0024] (i) The thread turning equipment and processing technology for processing the shock absorber shaft of the new energy vehicle, wherein the thread turning tool holder slides longitudinally along the guide rail base of the longitudinal guide rail slide. According to the axial position of the thread section to be processed of the shock absorber shaft, the tool holder is moved to the target processing area and then the longitudinal displacement is locked. The rotary base can be rotated and finely adjusted at a small angle, which drives the upper transverse feed slide to deflect around the center of the base to adapt to the cutting angle of different tooth angle threads.

[0025] (ii) The thread turning equipment and processing technology for the new energy vehicle shock absorber shaft processing: the bottom surface of the filtrate collection tank is unidirectionally inclined, and the cutting fluid mixed with waste residue gathers along the bottom of the inclined tank to the waste liquid discharge outlet. Subsequently, the waste liquid in the tank can be centrally discharged from the discharge outlet, realizing the unified recycling of waste residue and cutting fluid, and avoiding the scattering of waste liquid and debris to contaminate the guide rail and frame.

[0026] (III) The thread turning equipment and processing technology for the new energy vehicle shock absorber shaft processing: the first liquid outlet is precisely aligned with the cutting engagement point between the thread cutting tool and the shaft workpiece. The cutting fluid continuously flushes the cutting point, quickly removing the cutting heat generated by thread turning, and avoiding high-temperature wear of the tool and high-temperature annealing deformation of the workpiece thread surface.

[0027] (iv) The thread turning equipment and processing technology for the new energy vehicle shock absorber shaft: the second flow of liquid is directed toward the upper surface of the chip collection base, and the metal chips falling onto the base are sprayed in a directional manner. The cutting fluid force carries the chips toward the adsorption guide tube position of the base. As the workpiece rotates and the tool holder moves at a uniform speed in the longitudinal direction, the thread cutting head turns the external thread along the outer wall of the shaft. All the metal chips generated during processing fall toward the chip collection base area under the flushing of the second flow of cutting fluid.

[0028] (v) The thread turning equipment and processing technology for the new energy vehicle shock absorber shaft machining: the transverse feed slide performs radial feed motion, driving the thread cutting head of the tool assembly to approach the outer circle of the shock absorber shaft, and precisely adjusting the depth of cut. The tool assembly is locked to the transverse feed slide by the tool body mounting seat. The carbide thread cutting head can be quickly disassembled and replaced to meet the tool changing needs of different pitch thread machining. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 This is another schematic diagram of the overall structure of the present invention;

[0031] Figure 3 This is a schematic diagram of the right-hand clamping spindle box structure of the present invention;

[0032] Figure 4 This is a schematic diagram of the thread turning tool holder and longitudinal guide rail slide structure of the present invention;

[0033] Figure 5 This is a schematic diagram of the thread turning tool holder structure of the present invention;

[0034] Figure 6 This is a schematic diagram of the cooling component structure of the present invention;

[0035] Figure 7 This is an enlarged schematic diagram of structure A of the present invention;

[0036] Figure 8 This is a schematic diagram of the chip collection base and longitudinal guide rail slide structure of the present invention;

[0037] Figure 9 This is a schematic diagram of the chip collection base structure of the present invention;

[0038] Figure 10 This is an enlarged schematic diagram of structure B of the present invention;

[0039] Figure 11 This is a schematic diagram of the processing technology for a shock absorber shaft in a new energy vehicle.

[0040] In the diagram: 1. Frame; 2. Left clamping spindle box; 3. Guide slide; 4. Thread cutting tool holder; 41. Cooling assembly; 411. Coolant reservoir; 412. Cutting fluid control valve; 413. Cooling pipes; 42. Tool assembly; 421. Tool body mounting base; 422. Tool plate base; 423. Thread cutting head; 43. Transverse feed slide; 44. Rotary base; 45. Chip collection base; 451 452. Base mounting plate; 453. Center positioning boss; 454. Adsorption guide tube; 455. Positioning end ring; 456. Threaded bottom ring; 457. Cylinder body guide hole; 458. Adsorption inner cavity; 51. Right clamping spindle box; 52. Spindle box body; 53. Spindle rotary seat; 64. Workpiece chuck jaw; 658. Longitudinal guide rail slide; 61. Guide rail limit seat; 62. Filtrate collection tank; 63. Guide rail base. Detailed Implementation

[0041] Example 1, as Figures 1 to 4 As shown, the present invention provides a technical solution: a thread turning equipment and processing technology for processing shock absorber shafts of new energy vehicles, comprising: a frame 1 and a longitudinal guide rail slide 6 mounted on the upper end of the frame 1, wherein guide rail slide 3 and a right clamping spindle box 5 are respectively provided at both ends of the longitudinal guide rail slide 6, the longitudinal guide rail slide 6 is slidably adapted to the left clamping spindle box 2 through the guide rail slide 3, and the left clamping spindle box 2 and the right clamping spindle box 5 are arranged coaxially opposite to each other to jointly clamp the shock absorber shaft workpiece of new energy vehicles;

[0042] A thread turning tool holder 4 is slidably mounted within the travel range of the longitudinal guide rail slide 6. The thread turning tool holder 4 includes a cooling component 41, a cutting tool component 42, a transverse feed slide 43, a rotary base 44, and a chip collection base 45. The bottom of the rotary base 44 is fixedly connected to the chip collection base 45, and the transverse feed slide 43 is drivenly mounted on the upper end of the rotary base 44. The cooling component 41 and the cutting tool component 42 are fixedly mounted on the upper side of the transverse feed slide 43. The thread turning tool holder 4 slides longitudinally along the guide rail base 63 of the longitudinal guide rail slide 6. After the tool holder is moved to the target machining range according to the axial position of the thread section to be machined on the damping shaft, the longitudinal displacement is locked. The rotary base 44 can be rotated and finely adjusted at a small angle, causing the upper transverse feed slide 43 to deflect around the center of the base, adapting to the cutting angle of different thread angles.

[0043] Furthermore, the longitudinal guide rail slide 6 includes a guide rail base 63, a guide rail limiting seat 61, and a filtrate collection tank 62 disposed inside the guide rail base 63. The filtrate collection tank 62 is a sunken tank structure with its bottom surface inclined to one end. A waste liquid outlet is provided on the side wall of the filtrate collection tank 62 for centralized storage and discharge of cutting fluid containing waste residue. The base mounting plate 451 of the chip collection base 45 receives all falling chips and cutting waste fluid. Multiple sets of adsorption guide cylinders 453 arranged around the central positioning boss 452 are embedded in the base mounting holes through positioning end rings 454. The cylinder guide holes 456 arranged in the cylinder body rely on the negative pressure of the cutting fluid flow to adsorb the fine chips and waste fluid accumulated on the surface of the base.

[0044] Furthermore, the right clamping spindle box 5 includes a spindle box body 51, a spindle rotary seat 52, and a workpiece chuck jaw 53 disposed at the end of the spindle rotary seat 52. The guide slide 3 is slidably limited in cooperation with the guide rail limiting seat 61. The left clamping spindle box 2 moves axially along the guide slide 3. The clamping end of the left clamping spindle box 2 is coaxially engaged with the workpiece chuck jaw 53 for centering and clamping both ends of the shock-absorbing shaft. After the equipment is powered on, the right clamping spindle box 5 remains in a fixed position. The spindle rotary seat 52 inside it drives the workpiece chuck jaw 53 to be in an open state, sending one end of the new energy vehicle shock-absorbing shaft to be processed into the workpiece chuck jaw 53. The workpiece chuck jaw 53 tightens to achieve centering and clamping of the right end of the shaft.

[0045] Example 2, based on Example 1, such as Figures 5 to 10As shown, the cooling assembly 41 further includes a liquid storage tank 411, a cutting fluid control valve 412, and a cooling pipe 413 connecting the liquid storage tank 411. The outlet of the cooling pipe 413 is arranged towards the cutting position of the cutting tool assembly 42. The cooling pipe 413 is divided into two branches: one branch outlet is aligned with the thread cutting head 423 and the thread cutting engagement position of the shock-absorbing shaft workpiece; the other branch is directed towards the upper surface of the chip collection base 45, used to rinse cutting chips and cooperate with the chip collection base 45 to complete the slag flushing and collection. Before machining starts, the liquid storage tank 411 stores the prepared cutting fluid. The operator manually adjusts the opening of the cutting fluid control valve 412 according to the roughing and finishing conditions to precisely control the total output flow of the cooling pipe 413. The cooling pipe 413 has two outlets: the first outlet is precisely aligned with the cutting engagement point between the thread cutting head 423 and the shaft workpiece, and the cutting fluid continuously washes the cutting point, quickly removing the cutting heat generated by thread turning and avoiding high-temperature wear of the cutting head and high-temperature annealing deformation of the workpiece thread surface; the second outlet is directed towards the upper surface of the chip collection base 45, spraying the metal chips that fall onto the base in a directional manner. The cutting fluid uses its force to carry the chips towards the adsorption guide tube 453 on the base, and as the workpiece rotates and the tool holder moves at a uniform speed in the longitudinal direction, the thread cutting head 423 turns the external thread along the outer wall of the shaft. All the metal chips generated during machining fall into the chip collection base 45 area under the flushing of the second cutting fluid.

[0046] Furthermore, the cutting fluid control valve 412 is connected to the cooling pipe 413. The cutting fluid control valve 412 is a flow-adjustable valve, used to adjust the flow rate of the cutting fluid sprayed from the cooling pipe 413 according to the thread cutting machining conditions.

[0047] Furthermore, the turning tool assembly 42 includes a tool body mounting base 421, a tool plate base 422, and a thread cutting head 423. The thread cutting head 423 is fixed to the front end of the tool plate base 422, and the tool plate base 422 is locked and fixed to the transverse feed slide 43 by the tool body mounting base 421. The thread cutting head 423 is made of cemented carbide. The transverse feed slide 43 performs radial feed motion, driving the thread cutting head 423 of the turning tool assembly 42 to approach the outer circle of the damping shaft, precisely adjusting the depth of cut. The turning tool assembly 42 is locked onto the transverse feed slide 43 by the tool body mounting base 421. The cemented carbide thread cutting head 423 can be quickly disassembled and replaced to adapt to the tool changing needs of different pitch thread machining.

[0048] Furthermore, the chip collection base 45 includes a base mounting plate 451, a central positioning boss 452, and multiple sets of adsorption guide tubes 453. The base mounting plate 451 is fixedly connected to the lower end of the rotary base 44, and the central positioning boss 452 is located at the center of the base mounting plate 451.

[0049] Furthermore, multiple sets of the adsorption guide tubes 453 are arranged around the central positioning boss 452, and the bottom end of the adsorption guide tubes 453 extends above the filtrate collection tank 62 to guide cutting debris and slag-laden cutting fluid into the filtrate collection tank 62.

[0050] Furthermore, the adsorption guide tube 453 includes a positioning end ring 454, a tube body guide hole 456, an adsorption inner cavity 457, and a threaded bottom ring 455. The positioning end ring 454 is embedded and fixed in the assembly hole of the base mounting plate 451, and the tube body guide hole 456 is arrayed along the tube wall of the adsorption inner cavity 457.

[0051] Example 3, based on Example 1, such as Figures 1 to 11 As shown, a processing technology for a shock absorber shaft in a new energy vehicle consists of the following steps:

[0052] S1. Workpiece clamping: The operator feeds the pre-treated and qualified shock-absorbing shaft into the equipment. The right end is engaged with the workpiece chuck jaw 53 of the right spindle box 5. The left end of the shaft is moved to the left side of the left-hand clamping spindle box 2 to complete the double-end centering clamping. The thread turning tool holder 4 slides longitudinally along the guide rail base 63 of the longitudinal guide rail slide 6. According to the axial position of the thread section to be processed on the shock-absorbing shaft, the tool holder is moved to the target processing area and then the longitudinal displacement is locked. The left-hand clamping spindle box 2, relying on the guide rail slide 3, slides along the longitudinal guide rail slide. The guide rail limit seat 61 of 6 performs axial translational feed, and the left clamping head of the spindle box 2 coaxially presses the left end face of the shock-absorbing shaft, forming a double-end coaxial centering clamping structure with the workpiece chuck jaw 53 on the right side. The locking mechanism of the left clamping spindle box 2 is locked to complete the clamping and fixing of shock-absorbing shafts of different lengths. The drive unit built into the right clamping spindle box 5 drives the spindle rotary seat 52 to rotate at a uniform speed. The workpiece chuck jaw 53 drives the shock-absorbing shaft to rotate synchronously with the spindle, providing workpiece rotation power for subsequent thread turning.

[0053] S2. Tool Post Adjustment: The rotary base 44 can be rotated and finely adjusted at a small angle, driving the upper transverse feed slide 43 to deflect around the center of the base, adapting to the cutting angle of different thread angles. The transverse feed slide 43 performs radial feed motion, driving the thread cutting head 423 of the turning tool assembly 42 to approach the outer circle of the damping shaft. The turning tool assembly 42 is locked on the transverse feed slide 43 through the tool body mounting seat 421. The thread cutting head 423 made of carbide can be quickly disassembled and replaced to adapt to the tool changing needs of different pitch thread processing.

[0054] S3. Flow control: The liquid tank 411 stores the pre-mixed cutting fluid. According to the roughing and finishing conditions, the operator manually adjusts the opening of the cutting fluid control valve 412 to precisely control the total output flow of the cooling pipe 413. The first outlet is precisely aligned with the cutting engagement point between the thread cutting tool 423 and the shaft workpiece. The cutting fluid continuously flushes the cutting point, quickly removing the cutting heat generated by thread turning and preventing high-temperature wear of the tool and high-temperature annealing deformation of the workpiece thread surface. The second outlet is directed towards the upper surface of the chip collection base 45, spraying the metal chips falling onto the base in a directional manner. The cutting fluid force carries the chips towards the adsorption guide tube 453 on the base.

[0055] S4. Waste Collection: The base mounting plate 451 of the chip collection base 45 receives all falling chips and cutting fluid. Multiple sets of adsorption guide cylinders 453 arranged around the central positioning boss 452 are embedded in the base mounting holes through positioning end rings 454. The cylinder body guide holes 456 arranged in an array rely on the negative pressure of the cutting fluid flow to adsorb the fine chips and waste fluid accumulated on the surface of the base. The chips and mixed waste fluid are guided downward through the adsorption cavity 457 of the adsorption guide cylinder 453 and discharged from the bottom end of the threaded bottom ring 455, falling directly into the sinking filtrate collection tank 62 of the lower longitudinal guide rail slide 6. The bottom of the filtrate collection tank 62 is unidirectionally inclined. The cutting fluid mixed with the waste residue gathers along the inclined bottom of the tank towards the waste liquid discharge outlet. Subsequently, the waste liquid in the tank can be centrally discharged from the discharge outlet, realizing the unified recycling of waste residue and cutting fluid, and avoiding the scattering of waste liquid and debris to contaminate the guide rail and frame 1.

Claims

1. A thread turning machine for machining shock absorber shafts in new energy vehicles, characterized in that, include: The frame (1) and the longitudinal guide rail slide (6) mounted on the upper end of the frame (1) are provided with guide rail slide (3) and right clamping spindle box (5) at both ends of the longitudinal guide rail slide (6). The longitudinal guide rail slide (6) is slidably adapted to the left clamping spindle box (2) through the guide rail slide (3). The left clamping spindle box (2) and the right clamping spindle box (5) are arranged coaxially and opposite to each other to jointly clamp the new energy vehicle shock absorber shaft workpiece. The thread turning tool holder (4) is slidably installed within the travel range of the longitudinal guide rail slide (6). The thread turning tool holder (4) includes a cooling component (41), a cutting tool component (42), a transverse feed slide (43), a rotary base (44), and a chip collection base (45). The bottom of the rotary base (44) is fixedly connected to the chip collection base (45). The transverse feed slide (43) is drivenly installed on the upper end of the rotary base (44). The cooling component (41) and the cutting tool component (42) are fixedly installed on the upper side of the transverse feed slide (43).

2. The thread turning equipment for processing shock absorber shafts of new energy vehicles according to claim 1, characterized in that: The longitudinal guide rail slide (6) includes a guide rail base (63), a guide rail limiting seat (61), and a filtrate collection tank (62) disposed inside the guide rail base (63). The filtrate collection tank (62) is a sunken tank structure with the bottom surface of the tank inclined to one end. The side wall of the filtrate collection tank (62) has a waste liquid outlet for centralized storage and discharge of cutting fluid with waste residue.

3. The thread turning equipment for processing shock absorber shafts of new energy vehicles according to claim 1, characterized in that: The right clamping spindle box (5) includes a spindle box body (51), a spindle rotary seat (52), and a workpiece chuck claw (53) located at the end of the spindle rotary seat (52). The guide slide (3) is slidably limited by the guide rail limit seat (61). The left clamping spindle box (2) moves axially along the guide slide (3). The clamping end of the left clamping spindle box (2) is coaxially engaged with the workpiece chuck claw (53) for centering and clamping the two ends of the shock-absorbing shaft.

4. The thread turning equipment for processing shock absorber shafts of new energy vehicles according to claim 1, characterized in that: The cooling assembly (41) includes a liquid storage tank (411), a cutting fluid control valve (412), and a cooling pipe (413) connecting the liquid storage tank (411). The outlet of the cooling pipe (413) is arranged towards the cutting position of the cutting tool assembly (42). The cooling pipe (413) is arranged in two paths. One path is aligned with the thread cutting head (423) and the thread cutting engagement position of the shock-absorbing shaft workpiece. The other path is arranged towards the upper surface of the chip collection base (45) for rinsing cutting chips and cooperating with the chip collection base (45) to complete the slag flushing and collection.

5. The thread turning equipment for processing shock absorber shafts of new energy vehicles according to claim 4, characterized in that: The cutting fluid control valve (412) is connected to the cooling pipe (413). The cutting fluid control valve (412) is a flow-adjustable valve used to adjust the flow rate of the cutting fluid sprayed from the cooling pipe (413) according to the thread cutting machining conditions.

6. The thread turning equipment for processing shock absorber shafts of new energy vehicles according to claim 1, characterized in that: The lathe tool assembly (42) includes a tool body mounting base (421), a tool plate base (422), and a thread cutting head (423). The thread cutting head (423) is fixed to the front end of the tool plate base (422). The tool plate base (422) is locked and fixed to the transverse feed slide (43) by the tool body mounting base (421). The thread cutting head (423) is made of cemented carbide.

7. The thread turning equipment for processing shock absorber shafts of new energy vehicles according to claim 1, characterized in that: The chip collection base (45) includes a base mounting plate (451), a central positioning boss (452), and multiple sets of adsorption guide tubes (453). The base mounting plate (451) is fixedly connected to the lower end of the rotating base (44), and the central positioning boss (452) is located at the center of the base mounting plate (451).

8. The thread turning equipment for processing shock absorber shafts of new energy vehicles according to claim 7, characterized in that: Multiple sets of the adsorption guide tubes (453) are arranged around the central positioning boss (452). The bottom end of the adsorption guide tube (453) extends to the top of the filtrate collection tank (62) to guide the cutting debris and slag-laden cutting fluid into the filtrate collection tank (62).

9. The thread turning equipment for processing shock absorber shafts of new energy vehicles according to claim 8, characterized in that: The adsorption guide tube (453) includes a positioning end ring (454), a tube body guide hole (456), an adsorption inner cavity (457), and a threaded bottom ring (455). The positioning end ring (454) is embedded and fixed in the assembly hole of the base mounting plate (451), and the tube body guide hole (456) is arrayed along the tube wall of the adsorption inner cavity (457).

10. A thread turning device for machining shock absorber shafts of new energy vehicles according to any one of claims 1-9, now a machining process for shock absorber shafts of new energy vehicles is proposed, characterized in that, It consists of the following steps: S1. Workpiece clamping: The worker sends the pre-treated and qualified shock-absorbing shaft into the equipment. The right end is clamped into the workpiece chuck jaw (53) of the right clamping spindle box (5). The left end of the shaft is moved to tighten the spindle box (2) to complete the double-end centering clamping. The thread turning tool holder (4) slides longitudinally along the guide rail base (63) of the longitudinal guide rail slide (6). According to the axial position of the thread section to be processed of the shock-absorbing shaft, the tool holder is moved to the target processing area and the longitudinal displacement is locked. S2. Tool Post Adjustment: The rotary base (44) can be rotated and finely adjusted at a small angle, driving the upper transverse feed slide (43) to deflect around the center of the base, adapting to the cutting angle of different tooth angle threads. The transverse feed slide (43) makes radial feed motion, driving the thread cutting head (423) of the turning tool assembly (42) to approach the outer circle of the damping shaft. The turning tool assembly (42) is locked on the transverse feed slide (43) through the tool body mounting seat (421). The thread cutting head (423) made of carbide material can be quickly disassembled and replaced to adapt to the tool changing needs of different pitch thread processing. S3. Flow control: The liquid tank (411) stores the prepared cutting fluid. According to the roughing and finishing conditions, the operator manually adjusts the opening of the cutting fluid control valve (412) to accurately control the total output flow of the cooling pipe (413). The first outlet is precisely aligned with the cutting engagement point between the thread cutting tool (423) and the shaft workpiece. The cutting fluid continuously flushes the cutting point, quickly removing the cutting heat generated by thread turning, avoiding high-temperature wear of the tool and high-temperature annealing deformation of the workpiece thread surface. The second outlet is directed towards the upper surface of the chip collection base (45), spraying the metal chips that fall onto the base in a directional manner. The cutting fluid force carries the chips to the position of the adsorption guide tube (453) on the base. S4. Waste collection: The base mounting plate (451) of the chip collection base (45) receives all the chips and cutting fluid. Multiple sets of adsorption guide cylinders (453) arranged around the central positioning boss (452) are embedded in the base assembly hole through the positioning end ring (454). The cylinder guide holes (456) arranged in the cylinder body rely on the negative pressure of the cutting fluid flow to adsorb the fine chips and waste liquid accumulated on the surface of the base. The chips and mixed waste liquid are guided downward through the adsorption cavity (457) of the adsorption guide cylinder (453) and discharged from the bottom end of the threaded bottom ring (455), falling directly into the sinking filtrate collection tank (62) of the lower longitudinal guide rail slide (6).

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