Numerical control machine tool clamping device with protection function for shaft machining

Abstract

The invention relates to the technical field of numerical control machine tool clamping, and discloses a shaft machining numerical control machine tool clamping device with a protection function, which comprises a bottom plate, a movable center mechanism is mounted on the upper side of one end of the bottom plate, and a driving center mechanism is mounted on the upper side of the other end of the bottom plate. A shaft machining part is clamped between the movable center mechanism and the driving center mechanism; the live center mechanism comprises a pushing assembly, a live center assembly, a dynamic protection mechanism and an adjusting assembly. According to the invention, through the cooperative action between the dynamic protection mechanism and the adjusting assembly, the air injection angle and the air injection range of the nozzle can be dynamically adjusted according to the size of a shaft machined part, so that the chip blowing angle and the chip blowing range can be dynamically adjusted according to the size of the shaft machined part, the existing single and fixed chip blowing mode is changed, and the chip blowing efficiency is improved. The technical problem that in the prior art, it cannot be guaranteed that metal cuttings can be completely blown is solved, and the protection effect is further improved.

Description

Technical Field

[0001] The invention relates to the technical field of CNC machine tool clamping, in particular to a CNC machine tool clamping device for shaft processing with a protective function. Background Art

[0002] In the field of CNC machining of shaft parts (such as turning, milling, grinding, etc.), the clamping device is the core component to ensure machining accuracy, stability and efficiency. The shaft workpiece clamping devices widely used on CNC machine tools mainly include three-jaw chucks, four-jaw chucks, spring chucks, hydraulic chucks, pneumatic chucks and various special fixtures.

[0003] Currently, most existing shaft parts processing, especially in processes such as turning the outer circle, end face or milling the keyway, produces high-speed flying metal chips. Most existing CNC machine tool clamping devices for shaft processing use a fixed and single pneumatic chip blowing method. A single fixed air nozzle is installed at the movable tip position, blowing air from the movable tip to the driven tip to prevent metal chips from accumulating on the tool. However, this single and fixed chip blowing method cannot adapt to the processing of shafts of different sizes. That is, its chip blowing range and chip blowing angle cannot be dynamically adjusted according to the processing of shafts of the same size. At the same time, its chip blowing capacity is low, which makes it impossible to ensure that the metal chips can be blown away completely. Some chips easily fly and accumulate on the clamping area between the clamping device (especially the chuck jaws, chuck body, drive mechanism, and tool) and the workpiece, positioning reference surfaces, and the device's moving parts (such as the chuck guide rails and clamping screw / piston). Chip accumulation not only contaminates the fixture's precision mating surfaces, resulting in reduced positioning accuracy and increased repeatability errors, but can also embed into the clamping surfaces, scratching the workpiece surface or the fixture itself, and even obstructing the normal movement of the clamping mechanism (such as difficulty opening and closing the jaws). In severe cases, it can cause the fixture to become stuck or fail, requiring frequent downtime for cleaning, significantly impacting process continuity and production efficiency. Summary of the Invention

[0004] The object of the present invention is to provide a CNC machine tool clamping device for shaft processing with a protective function, so as to solve the problems raised in the background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a CNC machine tool clamping device with a protective function for shaft processing, comprising a base plate, a movable centering mechanism mounted on the upper side of one end of the base plate, and a driving centering mechanism mounted on the upper side of the other end of the base plate, wherein a shaft-like workpiece is clamped between the movable centering mechanism and the driving centering mechanism; The movable top mechanism includes a pushing assembly, a movable top assembly, a dynamic protection mechanism, and an adjusting assembly. The upper side of one end of the base plate is fixedly connected to the pushing assembly, the upper side of the pushing assembly is installed with a movable top assembly, the outer side of the movable top assembly is provided with a dynamic protection mechanism, the dynamic protection mechanism includes a movable rod, a moving ring, a connecting block, a fixed ring, and an air jet pipe. The outer side of the movable top assembly is fixedly connected to a fixed ring, the outer side of the movable top assembly is also slidably connected to a moving ring, the inner side of the fixed ring is rotatably connected to an annular evenly distributed air jet pipe, the outer side of the head of the air jet pipe is fixedly connected to a connecting block, and a movable rod is rotatably connected between the connecting block and the moving ring; An adjustment component is installed between the dynamic protection mechanism and the movable top component; The driving top mechanism includes a driving assembly and a driving top assembly. The driving assembly is fixedly mounted on the upper side of the other end of the base plate, and the driving top assembly is mounted on the inner side of the driving assembly. The jet angle of the jet pipe is dynamically adjusted through the cooperation between the adjustment component and the dynamic protection mechanism.

[0006] Furthermore, the pushing assembly includes a mounting plate, a fixed block, a hydraulic rod, and a sliding plate. The upper side of one end of the base plate is fixedly connected to the fixed block, one end of the base plate is fixedly connected to the mounting plate, the upper side of the mounting plate is fixedly connected to the hydraulic rod, and the output end of the hydraulic rod is fixedly connected to the sliding plate, and the sliding plate slides on the inner side of the fixed block.

[0007] Furthermore, the movable top assembly includes a supporting plate, a connecting frame, a motor 1, a connecting joint, a connecting sleeve, a shell, and a movable top. The upper side of the sliding plate is fixedly connected to the supporting plate, the side of the supporting plate away from the driving top mechanism is fixedly connected to the connecting frame, the side of the connecting frame away from the supporting plate is fixedly connected to motor 1, the output end of motor 1 is fixedly connected to the connecting joint, the end of the connecting joint away from motor 1 is fixedly connected to the connecting sleeve, the inner side of the head of the connecting sleeve is fixedly connected to the movable top, the outer side of the connecting sleeve is rotatably connected to the shell, the shell is fixedly connected to the supporting plate, and a through hole corresponding to the connecting sleeve is provided on the supporting plate.

[0008] Furthermore, the jet pipe includes a nozzle and a nozzle. The inner side of the connecting block is fixedly connected to the nozzle. The nozzle is fixedly mounted with evenly distributed nozzles. The nozzle is rotatably connected to the fixed ring. The fixed ring is fixedly connected to the outer shell. The moving ring slides on the outer shell.

[0009] Gas is introduced into the nozzle and then ejected outward from the nozzle to remove the metal chips generated during the machining process; Furthermore, the adjustment component includes motor 2, a screw rod, and a guide rod. Motor 2 is fixedly connected to the upper side of the supporting plate, and the output end of motor 2 is fixedly connected to the screw rod. Two sets of guide rods are fixedly connected to the supporting plate. The moving ring slides on the guide rod, and the other end of the screw rod is rotatably connected to the fixed ring. The screw rod and the moving ring are threadedly connected.

[0010] Motor 2 drives the screw to rotate, and the screw drives the moving ring to slide along the guide rod while rotating. The moving ring drives the nozzle to rotate through the movable rod and the connecting block while sliding, thereby adjusting the nozzle's jet angle and jet range; Furthermore, the driving assembly includes a third motor, a first pulley, a belt, a second pulley, a casing, a fixed seat, a transmission sleeve, a bearing, a cylinder, and a chuck. The other end of the upper side of the base plate is fixedly connected to the fixed seat, the upper side of the fixed seat is fixedly connected to the casing, the inner side of the casing is rotatably connected to the second pulley and the first pulley, the first pulley and the second pulley are connected through a belt transmission, the outer side of the casing is fixedly connected to the third motor, the output end of the third motor is fixedly connected to the first pulley, the inner side of the second pulley is fixedly connected to the transmission sleeve, a cylinder is provided on the outer side of the transmission sleeve, a bearing is installed between the transmission sleeve and the cylinder, a chuck is fixedly installed on the head of the transmission sleeve, and the cylinder is fixedly connected to the fixed seat; The driving top assembly passes through the transmission shaft sleeve, the second pulley and the casing.

[0011] Furthermore, the driving tip assembly includes a circular shell, a rear cover, a driving claw, an adjusting assembly, an energized assembly, and a driving tip. The inner side of the chuck clamps the circular shell. The chuck is a hydraulic chuck, which drives the internal piston or cylinder to move by hydraulic oil, and converts the axial thrust into the radial clamping force of the claw through a wedge structure or a lever mechanism, thereby realizing fast and precise clamping and release of the workpiece. The rear end of the circular shell is fixedly connected to the rear cover, and the inner side of the circular shell is provided with an annularly evenly distributed driving claw. The rear end of the driving claw is fixedly connected to the adjusting assembly, and the rear end of the adjusting assembly is fixedly installed with an energized assembly, and the driving tip is fixedly installed at the inner center of the circular shell.

[0012] Furthermore, the driving claw member includes a driving claw, a sector-shaped slider, a first sliding block, and a second sliding block. The inner side of the circular shell is slidably connected to a circular sector-shaped slider that is evenly distributed. The head of the sector-shaped slider is fixedly connected to the driving claw. The driving claw passes through the circular shell and extends to the outside of the circular shell. The outer side of the sector-shaped slider is fixedly connected to the first sliding block and the second sliding block. Adjacent sector-shaped sliders are provided with a sliding groove corresponding to the first sliding block. The regulating component includes a spring, a moving rod, a magnetic block, a moving shell, a coil, a protective shell, and an electric wire. The rear end of the fan-shaped slider is fixedly connected to the moving rod, the end of the moving rod away from the fan-shaped slider is fixedly connected to the magnetic block, the outer side of the magnetic block is slidably connected to the moving shell, the inner side of the moving shell is fixedly connected to the coil, the outer side of the moving rod is sleeved with a spring, the end of the moving shell away from the fan-shaped slider is fixedly connected to the protective shell, the end of the coil away from the fan-shaped slider is connected to the electric wire, and the electric wire is located on the inner side of the protective shell.

[0013] When current is passed through the coil, it generates a magnetic field force that repels the magnetic block, thereby pushing the moving rod, the fan-shaped slider, and the driving claw; Furthermore, the power-on component includes a square block, a rotating body, a terminal 1, a power-on wire, a metal ring, a power-connecting ring, a terminal 2, and a fixed column. The inner side of the back cover is fixedly connected to the rotating body, the rotating body and the protective shell are fixedly connected to the square block, the outer side of the rotating body is fixedly connected to the evenly distributed metal ring and the terminal 1, and the corresponding terminal 1 and the metal ring are connected via a power-on wire. A through hole corresponding to the power-on wire is opened on the inner side of the rotating body, an power-connecting ring is provided on the outer side of the metal ring, the upper side of the power-connecting ring is fixedly connected to the terminal 2, the inner side of the power-connecting ring is fixedly connected to the fixed column, and the metal ring rotates inside the power-connecting ring; The electric wires are connected to corresponding terminal posts, a support plate is fixedly connected to the outer side of the housing, and the fixing posts are fixedly connected to the support plate.

[0014] Motor 3 drives pulley 1, and pulley 1 drives pulley 2 through a belt to rotate synchronously, and pulley 2 drives the transmission sleeve to rotate, and the transmission sleeve drives the chuck to rotate synchronously. Since the inner side of the chuck holds the driving top assembly and the circular shell, the circular shell is driven to rotate synchronously, and the rest of the components of the driving top assembly except the electric coil, the second terminal and the fixed column are driven to rotate synchronously; Furthermore, the driving top includes a middle shaft, a driving top body, and a tail shaft. The tail shaft is fixedly connected to the inner side of the rotating body, the end of the tail shaft close to the movable top mechanism is fixedly connected to the middle shaft, and the end of the middle shaft close to the movable top mechanism is fixedly connected to the driving top body. The driving top body passes through the circular shell and extends to the outside of the circular shell. The shaft workpiece to be processed is placed between the driving claw and the movable center using an external clamping mechanism so that the movable center, the driving center body and the axis of the shaft workpiece to be processed coincide with each other; The middle shaft body is provided with a sliding groove corresponding to the sliding block 2, the sliding block 2 slides in the sliding groove, and the tail shaft body is rotatably connected to the support plate.

[0015] The hydraulic rod pushes the sliding plate to slide in the fixed block, and then pushes the movable top, so that the movable top pushes the shaft workpiece to be processed to move toward the driving top mechanism. The shaft workpiece to be processed pushes the driving claw, and the driving claw drives the fan-shaped slider to slide under the guidance of sliding block 1 and sliding block 2. The fan-shaped slider compresses the spring, and the moving rod drives the magnetic block to slide in the moving shell until the shaft workpiece to be processed contacts the driving top body, thereby increasing the clamping force of the shaft workpiece to be processed and maintaining the stability of the shaft workpiece to be processed.

[0016] Compared with the prior art, the present invention provides a CNC machine tool clamping device for shaft processing with a protective function, which has the following beneficial effects: 1. The CNC machine tool clamping device for shaft processing with protective function can dynamically adjust the jet angle and jet range of the nozzle according to the size of the shaft workpiece through the cooperation between the dynamic protection mechanism and the adjustment component, thereby realizing the dynamic adjustment of the chip blowing angle and range according to the size of the shaft workpiece, so that when the shaft workpiece is larger, the chip blowing angle and range are larger, and when the shaft workpiece is smaller, the chip blowing angle and range are smaller, which changes the existing single and fixed chip blowing method, solves the technical pain point that the existing metal chips cannot be blown away completely, and further improves the protective effect.

[0017] 2. The CNC machine tool clamping device for shaft processing with a protective function can dynamically adjust the size of the additional clamping force according to the processing depth of the shaft workpiece by driving the setting of the center mechanism, thereby ensuring the stability of the processing and improving the processing accuracy. At the same time, when the end face of the shaft workpiece is tilted, the sliding of the fan-shaped slider can ensure that the shaft workpiece and the external tool are still in a horizontal state. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 A schematic diagram of the three-dimensional structure of the present invention from another angle; Figure 3 It is a schematic diagram of the three-dimensional structure of the movable top mechanism of the present invention; Figure 4 This is a schematic diagram of the three-dimensional structure of the movable top mechanism from another angle of the present invention; Figure 5 Schematic diagram of the three-dimensional structure of the adjustment component of the present invention; Figure 6 Schematic diagram of the three-dimensional structure of the dynamic protection mechanism of the present invention; Figure 7 Schematic diagram of the exploded three-dimensional structure of the movable top assembly of the present invention; Figure 8This is a schematic diagram of the exploded three-dimensional structure of the movable top assembly from another angle of the present invention; Figure 9 This is a schematic diagram of the three-dimensional structure of the driving top mechanism of the present invention; Figure 10 This is a schematic diagram of the three-dimensional structure of the driving top mechanism from another angle of the present invention; Figure 11 Schematic diagram of the exploded three-dimensional structure of the drive assembly of the present invention; Figure 12 This is a schematic diagram of the three-dimensional structure of the driving top assembly of the present invention; Figure 13 This is a schematic diagram of the three-dimensional structure of the circular shell after cutting; Figure 14 This is a schematic diagram of the three-dimensional structure of the circular shell after being cut off from another angle of the present invention; Figure 15 This is a schematic diagram of the three-dimensional structure of the driving tip of the present invention; Figure 16 For the present invention Figure 15 A magnified schematic diagram of point A in the middle; Figure 17 This is a schematic diagram of the three-dimensional structure of the tail shaft of the present invention; Figure 18 This is a schematic diagram of the exploded three-dimensional structure of the power supply component of the present invention; Figure 19 This is a schematic diagram of the exploded three-dimensional structure of the power supply component from another angle of the present invention.

[0019] In the figure: 1. bottom plate; 2. movable top mechanism; 21. pushing assembly; 211. mounting plate; 212. fixing block; 213. hydraulic rod; 214. sliding plate; 22. movable top assembly; 221. bearing plate; 222. connecting frame; 223. motor 1; 224. connecting joint; 225. connecting sleeve; 226. housing; 227. movable top; 23. dynamic protection mechanism; 231. movable rod; 232. moving ring; 233. connecting block; 234. fixing ring; 235. nozzle; 236. nozzle; 24. adjusting assembly; 241. motor 2; 242. screw; 243. guide rod; 3. driving top mechanism; 31. driving assembly; 311. motor 3; 312. pulley 1; 313. belt; 314. pulley 2; 315. housing; 316. fixing seat; 317. transmission sleeve; 31 8. Bearing; 319. Cylinder; 310. Chuck; 32. Drive tip assembly; 321. Circular housing; 322. Back cover; 323. Drive claw; 3231. Drive claw; 3232. Sector slider; 3233. Sliding block 1; 3234. Sliding block 2; 324. Control assembly; 3241. Spring; 3242. Motion rod; 3243. Magnetic block; 3244. Motion housing; 3245. Coil; 3246, protective shell; 3247, electric wire; 325, power-carrying component; 3251, connecting block; 3252, rotating body; 3253, terminal one; 3254, power-carrying wire; 3255, metal ring; 3256, connecting ring; 3257, terminal two; 3258, fixing column; 326, driving top; 3261, middle shaft; 3262, driving top body; 3263, tail shaft. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example

[0021] See also Figures 1-19 A CNC machine tool clamping device with a protective function for shaft processing includes a base plate 1, a movable center mechanism 2 is installed on the upper side of one end of the base plate 1, and a driving center mechanism 3 is installed on the upper side of the other end of the base plate 1. A shaft-like workpiece is clamped between the movable center mechanism 2 and the driving center mechanism 3; The movable top mechanism 2 includes a pushing component 21, a movable top component 22, a dynamic protection mechanism 23, and an adjusting component 24. The pushing component 21 is fixedly connected to the upper side of one end of the base plate 1, and the movable top component 22 is installed on the upper side of the pushing component 21. The outer side of the movable top component 22 is provided with a dynamic protection mechanism 23. The dynamic protection mechanism 23 includes a movable rod 231, a moving ring 232, a connecting block 233, a fixing ring 234, and an air jet. The outer side of the movable top component 22 is fixedly connected to the fixing ring 234, and the outer side of the movable top component 22 is also slidably connected to the moving ring 232. The inner side of the fixing ring 234 is rotatably connected to the air jet tubes evenly distributed in an annular shape. The outer side of the head of the air jet tube is fixedly connected to the connecting block 233, and the movable rod 231 is rotatably connected between the connecting block 233 and the moving ring 232. An adjustment assembly 24 is installed between the dynamic protection mechanism 23 and the movable top assembly 22; The driving top mechanism 3 includes a driving assembly 31 and a driving top assembly 32. The driving assembly 31 is fixedly mounted on the upper side of the other end of the base plate 1, and the driving top assembly 32 is mounted on the inner side of the driving assembly 31. The jet angle of the jet pipe is dynamically adjusted through the cooperation between the adjustment component 24 and the dynamic protection mechanism 23.

[0022] Furthermore, the pushing assembly 21 includes a mounting plate 211, a fixed block 212, a hydraulic rod 213, and a sliding plate 214. The fixed block 212 is fixedly connected to the upper side of one end of the base plate 1, and the mounting plate 211 is fixedly connected to one end of the base plate 1. The upper side of the mounting plate 211 is fixedly connected to the hydraulic rod 213, and the output end of the hydraulic rod 213 is fixedly connected to the sliding plate 214. The sliding plate 214 slides on the inner side of the fixed block 212.

[0023] Furthermore, the movable top assembly 22 includes a supporting plate 221, a connecting frame 222, a motor 1 223, a connecting joint 224, a connecting sleeve 225, a shell 226, and a movable top 227. The upper side of the sliding plate 214 is fixedly connected to the supporting plate 221, the side of the supporting plate 221 away from the driving top mechanism 3 is fixedly connected to the connecting frame 222, the side of the connecting frame 222 away from the supporting plate 221 is fixedly connected to the motor 1 223, the output end of the motor 1 223 is fixedly connected to the connecting joint 224, the end of the connecting joint 224 away from the motor 1 223 is fixedly connected to the connecting sleeve 225, the inner side of the head of the connecting sleeve 225 is fixedly connected to the movable top 227, the outer side of the connecting sleeve 225 is rotatably connected to the shell 226, the shell 226 is fixedly connected to the supporting plate 221, and the supporting plate 221 is provided with a through hole corresponding to the connecting sleeve 225.

[0024] Furthermore, the jet pipe includes a nozzle 235 and a nozzle 236. The nozzle 236 is fixedly connected to the inner side of the connecting block 233. The nozzles 235 are fixedly installed on the nozzle 236. The nozzle 236 is rotatably connected to the fixed ring 234. The fixed ring 234 is fixedly connected to the outer shell 226. The moving ring 232 slides on the outer shell 226.

[0025] Gas is introduced into the nozzle 236 and then ejected outward from the nozzle 235 to remove the metal chips generated during the machining process; Furthermore, the adjustment component 24 includes a second motor 241, a screw rod 242, and a guide rod 243. The upper side of the supporting plate 221 is fixedly connected to the second motor 241, the output end of the second motor 241 is fixedly connected to the screw rod 242, and two groups of guide rods 243 are fixedly connected to the supporting plate 221. The moving ring 232 slides on the guide rod 243, and the other end of the screw rod 242 is rotatably connected to the fixed ring 234. The screw rod 242 and the moving ring 232 are threadedly connected.

[0026] The second motor 241 drives the screw rod 242 to rotate. The screw rod 242 drives the movement ring 232 to slide along the guide rod 243. The movement ring 232 drives the nozzle 236 to rotate through the movable rod 231 and the connecting block 233, thereby adjusting the jet angle and jet range of the nozzle 235. Furthermore, the driving assembly 31 includes a motor 311, a pulley 1 312, a belt 313, a pulley 2 314, a housing 315, a fixed seat 316, a transmission sleeve 317, a bearing 318, a cylinder 319, and a chuck 310. The other end of the upper side of the base plate 1 is fixedly connected to the fixed seat 316, the upper side of the fixed seat 316 is fixedly connected to the housing 315, and the inner side of the housing 315 is rotatably connected to the pulley 2 314, the pulley 1 312, the pulley 1 312, and the pulley 2 314 is connected via a belt 313, a motor 311 is fixedly connected to the outside of the housing 315, the output end of the motor 311 is fixedly connected to the pulley 1 312, a transmission sleeve 317 is fixedly connected to the inside of the pulley 2 314, a cylinder 319 is provided on the outside of the transmission sleeve 317, a bearing 318 is installed between the transmission sleeve 317 and the cylinder 319, a chuck 310 is fixedly installed on the head of the transmission sleeve 317, and the cylinder 319 is fixedly connected to the fixed seat 316; The driving top assembly 32 passes through the transmission shaft sleeve 317 , the second pulley 314 , and the housing 315 .

[0027] Furthermore, the driving tip assembly 32 includes a circular shell 321, a rear cover 322, a driving claw 323, an adjusting assembly 324, an energizing assembly 325, and a driving tip 326. The inner side of the chuck 310 clamps the circular shell 321, the rear end of the circular shell 321 is fixedly connected to the rear cover 322, the inner side of the circular shell 321 is provided with an annularly evenly distributed driving claw 323, the rear end of the driving claw 323 is fixedly connected to the adjusting assembly 324, the rear end of the adjusting assembly 324 is fixedly installed with the energizing assembly 325, and the driving tip 326 is fixedly installed at the inner center of the circular shell 321.

[0028] Furthermore, the driving claw member 323 includes a driving claw 3231, a sector-shaped slider 3232, a first sliding block 3233, and a second sliding block 3234. The inner side of the circular housing 321 is slidably connected to the circular housing 321 with the sector-shaped sliders 3232 evenly distributed in an annular shape. The heads of the sector-shaped sliders 3232 are fixedly connected to the driving claw 3231. The driving claw 3231 passes through the circular housing 321 and extends to the outside of the circular housing 321. The outer sides of the sector-shaped sliders 3232 are fixedly connected to the first sliding block 3233 and the second sliding block 3234. Adjacent sector-shaped sliders 3232 are provided with sliding grooves corresponding to the first sliding blocks 3233. The regulating component 324 includes a spring 3241, a moving rod 3242, a magnetic block 3243, a moving shell 3244, a coil 3245, a protective shell 3246, and a wire 3247. The rear end of the fan-shaped slider 3232 is fixedly connected to the moving rod 3242, the end of the moving rod 3242 away from the fan-shaped slider 3232 is fixedly connected to the magnetic block 3243, the outer side of the magnetic block 3243 is slidably connected to the moving shell 3244, the inner side of the moving shell 3244 is fixedly connected to the coil 3245, the outer side of the moving rod 3242 is sleeved with a spring 3241, the end of the moving shell 3244 away from the fan-shaped slider 3232 is fixedly connected to the protective shell 3246, the end of the coil 3245 away from the fan-shaped slider 3232 is connected to the wire 3247, and the wire 3247 is located on the inner side of the protective shell 3246.

[0029] When current is applied to the coil 3245 , it generates a magnetic field force that repels the magnetic block 3243 , thereby pushing the motion rod 3242 , the fan-shaped slider 3232 , and the driving claw 3231 ; Furthermore, the power supply component 325 includes a square block 3251, a rotating body 3252, a terminal 1 3253, a power line 3254, a metal ring 3255, a power ring 3256, a terminal 2 3257, and a fixed column 3258. The inner side of the back cover 322 is fixedly connected to the rotating body 3252, the square block 3251 is fixedly connected between the rotating body 3252 and the protective shell 3246, and the outer side of the rotating body 3252 is fixedly connected to the metal rings 3255, Terminal 1 3253 is connected to the corresponding metal ring 3255 via a conducting wire 3254. A through hole corresponding to the conducting wire 3254 is provided on the inner side of the rotating body 3252. A connecting ring 3256 is provided on the outer side of the metal ring 3255. Terminal 2 3257 is fixedly connected to the upper side of the connecting ring 3256. A fixing post 3258 is fixedly connected to the inner side of the connecting ring 3256. The metal ring 3255 rotates inside the connecting ring 3256. The wire 3247 is connected to the corresponding terminal 1 3253. A support plate is fixedly connected to the outer side of the housing 315, and the fixing column 3258 is fixedly connected to the support plate.

[0030] Motor three 311 drives pulley one 312, which drives pulley two 314 via belt 313 for synchronous rotation. Pulley two 314 drives drive sleeve 317 for rotation, and drive sleeve 317 drives chuck 310 for synchronous rotation. Since the inner side of chuck 310 holds driving top assembly 32 and circular housing 321, circular housing 321 is driven to rotate synchronously, which in turn drives the remaining components of driving top assembly 32 except for contact coil 3256, terminal two 3257, and fixed post 3258 to rotate synchronously. Furthermore, the driving tip 326 includes a middle shaft 3261, a driving tip body 3262, and a tail shaft 3263. The tail shaft 3263 is fixedly connected to the inner side of the rotating body 3252. The end of the tail shaft 3263 close to the movable tip mechanism 2 is fixedly connected to the middle shaft 3261. The end of the middle shaft 3261 close to the movable tip mechanism 2 is fixedly connected to the driving tip body 3262. The driving tip body 3262 passes through the circular shell 321 and extends to the outside of the circular shell 321. The shaft workpiece to be processed is placed between the driving claw 3231 and the movable center 227 using an external clamping mechanism so that the movable center 227, the driving center body 3262 and the axis of the shaft workpiece to be processed coincide with each other; A sliding groove corresponding to the second sliding block 3234 is opened on the middle shaft body 3261. The second sliding block 3234 slides in the sliding groove, and the tail shaft body 3263 is rotatably connected to the support plate.

[0031] The hydraulic rod 213 pushes the sliding plate 214 to slide in the fixed block 212, and then pushes the movable top 227, so that the movable top 227 pushes the shaft workpiece to be processed to move toward the driving top mechanism 3, and the shaft workpiece to be processed pushes the driving claw 3231, and the driving claw 3231 drives the fan-shaped slider 3232 to slide under the guidance of sliding block 1 3233 and sliding block 2 3234. The fan-shaped slider 3232 compresses the spring 3241, and the moving rod 3242 drives the magnetic block 3243 to slide in the moving shell 3244 until the shaft workpiece to be processed contacts with the driving top body 3262, thereby increasing the clamping force on the shaft workpiece to be processed and maintaining the stability of the shaft workpiece to be processed.

[0032] The specific usage and function of this embodiment are as follows: When in use, first place the shaft workpiece to be processed between the driving claw 3231 and the movable center 227 (using an external clamping mechanism), so that the movable center 227, the driving center body 3262 and the axis of the shaft workpiece to be processed coincide with each other; The external controller controls the start-up hydraulic rod 213, and the hydraulic rod 213 pushes the sliding plate 214 to slide in the fixed block 212, thereby pushing the movable top 227, so that the movable top 227 pushes the shaft workpiece to be processed to move toward the driving top mechanism 3, and the shaft workpiece to be processed pushes the driving claw 3231, and the driving claw 3231 drives the fan-shaped slider 3232 to slide under the guidance of the sliding block 1 3233 and the sliding block 2 3234, and the fan-shaped slider 3232 compresses the spring 3241, and the moving rod 3242 drives the magnetic block 3243 to slide in the moving housing 3244 until the shaft workpiece to be processed contacts with the driving top body 3262, thereby increasing the clamping force on the shaft workpiece to be processed and maintaining the stability of the shaft workpiece to be processed; The external controller starts motor three 311, which drives pulley one 312. Pulley one 312 drives pulley two 314 via belt 313 for synchronous rotation. Pulley two 314 drives drive sleeve 317 for rotation. Drive sleeve 317 drives chuck 310 for synchronous rotation. Since the inner side of chuck 310 holds driving top assembly 32 and circular housing 321, circular housing 321 is driven to rotate synchronously. This in turn drives all other components of driving top assembly 32 except for contact coil 3256, terminal two 3257, and fixed post 3258 to rotate synchronously. Then the shaft workpiece to be processed is driven to rotate, and the movable center 227 rotates synchronously therewith; While the external machining tool is machining the shaft workpiece, the nozzle 236 is connected to the external air supply device, which is then activated to allow air to flow into the nozzle 236 and then ejected from the nozzle 235 to remove the metal chips generated during the machining process. Since the nozzles 235 and nozzles 236 are evenly distributed in a ring around the movable top 227, a plurality of airflow sets are generated that diffuse outward in the axial direction, thereby making the chip blowing force strong; At the same time, according to the size of the shaft workpiece, the second motor 241 is started, and the second motor 241 drives the screw rod 242 to rotate. The screw rod 242 drives the moving ring 232 to slide along the guide rod 243 while rotating. The moving ring 232 drives the nozzle 236 to rotate through the movable rod 231 and the connecting block 233 while sliding, thereby adjusting the jet angle and jet range of the nozzle 235. Dynamically adjust the chip blowing angle and range according to the size of the shaft workpiece, so that when the shaft workpiece is large, the chip blowing angle and range are large, and when the shaft workpiece is small, the chip blowing angle and range are small; When machining a shaft-like workpiece, the force exerted by the external tool on it corresponds to the depth of machining on the shaft-like workpiece. The external controller applies current to terminal 2 3257. Since the contact ring 3256 is in contact with the metal ring 3255, the metal ring 3255 is connected to terminal 1 3253 via the conducting wire 3254. Terminal 1 3253 is connected to coil 3245 via the wire 3247, thereby applying current to the interior of coil 3245. When current is applied to the coil 3245 , it generates a magnetic field force that repels the magnetic block 3243 , thereby pushing the motion rod 3242 , the fan-shaped slider 3232 , and the driving claw 3231 ; The deeper the processing depth, the greater the current applied, and the greater the clamping force of the driving claw 3231 on the shaft workpiece. This allows the additional clamping force to be dynamically adjusted according to the processing depth of the shaft workpiece, thereby ensuring processing stability. At the same time, since each group of fan-shaped sliders 3232 slides with each other, when the end face of the shaft-type workpiece is tilted, the sliding of the fan-shaped sliders 3232 can ensure that the shaft-type workpiece and the external tool are still in a horizontal state.

[0033] At the same time, the motor 1 223 can be controlled to start, so that the rotation speed of the motor 1 223 and the motor 3 311 are kept consistent, thereby realizing dual-power drive for shaft-type processing parts.

[0034] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A CNC machine tool clamping device for shaft processing with a protective function, comprising a base plate (1), characterized in that: A movable top mechanism (2) is installed on the upper side of one end of the base plate (1), and a driving top mechanism (3) is installed on the upper side of the other end of the base plate (1), and a shaft-type workpiece is clamped between the movable top mechanism (2) and the driving top mechanism (3); The movable top mechanism (2) includes a pushing component (21), a movable top component (22), a dynamic protection mechanism (23), and an adjusting component (24). The upper side of one end of the base plate (1) is fixedly connected to the pushing component (21). The upper side of the pushing component (21) is installed with the movable top component (22). The outer side of the movable top component (22) is provided with a dynamic protection mechanism (23). The dynamic protection mechanism (23) includes a movable rod (231), a moving ring (232), a connecting block (233), a fixed ring (234), and an air jet. The outer side of the movable top component (22) is fixedly connected to the fixing ring (234). The outer side of the movable top component (22) is also slidably connected to the moving ring (232). The inner side of the fixing ring (234) is rotatably connected to the air jets uniformly distributed in an annular shape. The outer side of the head of the air jet is fixedly connected to the connecting block (233). The movable rod (231) is rotatably connected between the connecting block (233) and the moving ring (232). An adjustment component (24) is installed between the dynamic protection mechanism (23) and the movable top component (22); The driving top mechanism (3) comprises a driving assembly (31) and a driving top assembly (32); the driving assembly (31) is fixedly mounted on the upper side of the other end of the base plate (1); and the driving top assembly (32) is mounted on the inner side of the driving assembly (31); The jet angle of the jet pipe is dynamically adjusted through the cooperation between the adjustment component (24) and the dynamic protection mechanism (23).

2. The CNC machine tool clamping device with a protective function for shaft processing according to claim 1, characterized in that: The pushing assembly (21) comprises a mounting plate (211), a fixed block (212), a hydraulic rod (213), and a sliding plate (214); the upper side of one end of the base plate (1) is fixedly connected to the fixed block (212); one end of the base plate (1) is fixedly connected to the mounting plate (211); the upper side of the mounting plate (211) is fixedly connected to the hydraulic rod (213); the output end of the hydraulic rod (213) is fixedly connected to the sliding plate (214); and the sliding plate (214) slides inside the fixed block (212).

3. The CNC machine tool clamping device with a protective function for shaft processing according to claim 2, characterized in that: The movable top assembly (22) includes a bearing plate (221), a connecting frame (222), a motor (223), a connecting joint (224), a connecting sleeve (225), a housing (226), and a movable top (227). The upper side of the sliding plate (214) is fixedly connected to the bearing plate (221), the side of the bearing plate (221) away from the driving top mechanism (3) is fixedly connected to the connecting frame (222), and the side of the connecting frame (222) away from the bearing plate (221) is fixedly connected to the motor (223). The output end of the motor 1 (223) is fixedly connected to a connecting joint (224), an end of the connecting joint (224) away from the motor 1 (223) is fixedly connected to a connecting sleeve (225), the inner side of the head of the connecting sleeve (225) is fixedly connected to a movable top (227), the outer side of the connecting sleeve (225) is rotatably connected to a housing (226), the housing (226) is fixedly connected to the supporting plate (221), and a through hole corresponding to the connecting sleeve (225) is opened on the supporting plate (221).

4. The CNC machine tool clamping device with a protective function for shaft processing according to claim 3, characterized in that: The jet pipe comprises a nozzle (235) and a nozzle (236). The nozzle (236) is fixedly connected to the inner side of the connecting block (233). The nozzles (235) are fixedly mounted on the nozzle (236) and are evenly distributed. The nozzle (236) is rotatably connected to the fixing ring (234). The fixing ring (234) is fixedly connected to the outer shell (226). The moving ring (232) slides on the outer shell (226).

5. The CNC machine tool clamping device with a protective function for shaft processing according to claim 4, characterized in that: The adjustment assembly (24) includes a second motor (241), a screw rod (242), and a guide rod (243). The upper side of the support plate (221) is fixedly connected to the second motor (241). The output end of the second motor (241) is fixedly connected to the screw rod (242). Two groups of guide rods (243) are fixedly connected to the support plate (221). The moving ring (232) slides on the guide rods (243). The other end of the screw rod (242) is rotatably connected to the fixed ring (234). The screw rod (242) and the moving ring (232) are threadedly connected.

6. The CNC machine tool clamping device with a protective function for shaft processing according to claim 1, characterized in that: The driving assembly (31) includes a motor three (311), a pulley one (312), a belt (313), a pulley two (314), a housing (315), a fixed seat (316), a transmission shaft sleeve (317), a bearing (318), a cylinder (319), and a chuck (310). The other end of the upper side of the bottom plate (1) is fixedly connected to the fixed seat (316). The upper side of the fixed seat (316) is fixedly connected to the housing (315). The inner side of the housing (315) is rotatably connected to the pulley two (314) and the pulley one (312). The pulley one (312), the pulley two (314) and the pulley two (312) are fixedly connected to the housing (315). 14) is connected by a belt (313), the outer side of the housing (315) is fixedly connected to the motor three (311), the output end of the motor three (311) is fixedly connected to the pulley one (312), the inner side of the pulley two (314) is fixedly connected to the transmission sleeve (317), the outer side of the transmission sleeve (317) is provided with a cylinder (319), a bearing (318) is installed between the transmission sleeve (317) and the cylinder (319), the head of the transmission sleeve (317) is fixedly installed with a chuck (310), and the cylinder (319) is fixedly connected to the fixed seat (316); The driving top assembly (32) passes through the transmission shaft sleeve (317), the second pulley (314), and the housing (315).

7. The CNC machine tool clamping device with a protective function for shaft processing according to claim 6, characterized in that: The driving tip assembly (32) includes a circular shell (321), a rear cover (322), a driving claw (323), a regulating assembly (324), an energizing assembly (325), and a driving tip (326). The circular shell (321) is clamped on the inner side of the chuck (310). The rear end of the circular shell (321) is fixedly connected to the rear cover (322). The inner side of the circular shell (321) is provided with driving claws (323) distributed evenly in an annular shape. The rear end of the driving claw (323) is fixedly connected to the regulating assembly (324). The rear end of the regulating assembly (324) is fixedly installed with the energizing assembly (325). The driving tip (326) is fixedly installed at the inner center of the circular shell (321).

8. The CNC machine tool clamping device with a protective function for shaft processing according to claim 7, characterized in that: The driving claw member (323) includes a driving claw (3231), a fan-shaped slider (3232), a sliding block 1 (3233), and a sliding block 2 (3234). The inner side of the circular shell (321) is slidably connected to the fan-shaped slider (3232) which is evenly distributed in an annular shape. The head of the fan-shaped slider (3232) is fixedly connected to the driving claw (3231). The driving claw (3231) passes through the circular shell (321) and extends to the outside of the circular shell (321). The outer side of the fan-shaped slider (3232) is fixedly connected to the sliding block 1 (3233) and the sliding block 2 (3234). The adjacent fan-shaped slider (3232) is provided with a sliding groove corresponding to the sliding block 1 (3233). The regulating assembly (324) includes a spring (3241), a motion rod (3242), a magnetic block (3243), a motion housing (3244), a coil (3245), a protective shell (3246), and an electric wire (3247). The rear end of the fan-shaped slider (3232) is fixedly connected to the motion rod (3242). The end of the motion rod (3242) away from the fan-shaped slider (3232) is fixedly connected to the magnetic block (3243). The outer side of the magnetic block (3243) is slidably connected to the magnetic block (3243). A moving shell (3244) is provided, the inner side of the moving shell (3244) is fixedly connected to a coil (3245), the outer side of the moving rod (3242) is sleeved with a spring (3241), the end of the moving shell (3244) away from the fan-shaped slider (3232) is fixedly connected to a protective shell (3246), the end of the coil (3245) away from the fan-shaped slider (3232) is connected to an electric wire (3247), and the electric wire (3247) is located on the inner side of the protective shell (3246).

9. The CNC machine tool clamping device with a protective function for shaft processing according to claim 8, characterized in that: The power supply component (325) includes a square block (3251), a rotating body (3252), a terminal 1 (3253), a power supply line (3254), a metal ring (3255), a power connection ring (3256), a terminal 2 (3257), and a fixed column (3258). The inner side of the back cover (322) is fixedly connected to the rotating body (3252). The square block (3251) is fixedly connected between the rotating body (3252) and the protective shell (3246). The outer side of the rotating body (3252) is fixedly connected to the metal ring (3255) and the terminal 2. One (3253), the corresponding terminal one (3253) and the metal ring (3255) are connected via a conducting wire (3254), a through hole corresponding to the conducting wire (3254) is provided on the inner side of the rotating body (3252), a connecting ring (3256) is provided on the outer side of the metal ring (3255), a terminal two (3257) is fixedly connected to the upper side of the connecting ring (3256), a fixing column (3258) is fixedly connected to the inner side of the connecting ring (3256), and the metal ring (3255) rotates on the inner side of the connecting ring (3256); The electric wire (3247) is connected to the corresponding terminal 1 (3253), a support plate is fixedly connected to the outside of the housing (315), and the fixing column (3258) is fixedly connected to the support plate.

10. The CNC machine tool clamping device with a protective function for shaft processing according to claim 9, characterized in that: The driving top (326) includes a middle shaft (3261), a driving top body (3262), and a tail shaft (3263). The tail shaft (3263) is fixedly connected to the inner side of the rotating body (3252). The end of the tail shaft (3263) close to the movable top mechanism (2) is fixedly connected to the middle shaft (3261). The end of the middle shaft (3261) close to the movable top mechanism (2) is fixedly connected to the driving top body (3262). The driving top body (3262) passes through the circular shell (321) and extends to the outside of the circular shell (321). The middle shaft body (3261) is provided with a sliding groove corresponding to the second sliding block (3234), the second sliding block (3234) slides in the sliding groove, and the tail shaft body (3263) is rotatably connected to the support plate.

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